WO2026007770A1 - Procédé de fabrication d'une soupape d'arrêt en alliage d'aluminium et soupape d'arrêt en alliage d'aluminium - Google Patents

Procédé de fabrication d'une soupape d'arrêt en alliage d'aluminium et soupape d'arrêt en alliage d'aluminium

Info

Publication number
WO2026007770A1
WO2026007770A1 PCT/CN2025/103420 CN2025103420W WO2026007770A1 WO 2026007770 A1 WO2026007770 A1 WO 2026007770A1 CN 2025103420 W CN2025103420 W CN 2025103420W WO 2026007770 A1 WO2026007770 A1 WO 2026007770A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
aluminum alloy
forming part
valve body
flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2025/103420
Other languages
English (en)
Chinese (zh)
Inventor
范熠明
骆斌
华立钢
单宇宽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Dunan Artificial Environment Co Ltd
Original Assignee
Zhejiang Dunan Artificial Environment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202421545152.5U external-priority patent/CN222669079U/zh
Priority claimed from CN202411389529.7A external-priority patent/CN119282607B/zh
Application filed by Zhejiang Dunan Artificial Environment Co Ltd filed Critical Zhejiang Dunan Artificial Environment Co Ltd
Publication of WO2026007770A1 publication Critical patent/WO2026007770A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor

Definitions

  • This application belongs to the field of gate valve technology, specifically relating to a manufacturing method of an aluminum alloy gate valve and the aluminum alloy gate valve itself.
  • a method for manufacturing an aluminum alloy gate valve and an aluminum alloy gate valve are provided.
  • a method for manufacturing an aluminum alloy gate valve specifically includes the following steps:
  • step (3) Homogenization treatment of aluminum alloy rods: The aluminum alloy rods obtained by cooling in step (2) are placed in a homogenizing furnace for homogenization treatment;
  • Shaped extrusion molding Cut the aluminum alloy rod after homogenization treatment in (3) into short rods, heat the short rods to 450-550°C, and use a 2000T or higher positive extrusion press to extrude the material.
  • the temperature of the extrusion die is controlled at 400-500°C.
  • Heat treatment strengthening The extruded profile is cooled to room temperature by water for a certain period of time, then heated to a certain temperature and held for several hours for a certain period of time, then heated to a certain temperature and held for several hours for a certain period of time, and finally air-cooled after being taken out of the furnace to obtain a long section valve seat aluminum alloy profile blank with a cross-shaped longitudinal section.
  • the height of the long section valve seat aluminum alloy profile blank in the vertical direction is not less than the maximum height of the gate valve in the vertical direction, and the width of the long section valve seat aluminum alloy profile blank is not less than the width of the gate valve.
  • the height is the height of the longitudinal section of the long section valve seat aluminum alloy profile blank, and the width is the width of the longitudinal section of the long section valve seat aluminum alloy profile blank.
  • the aluminum alloy stop valve is machined on a lathe.
  • Figure 1 is a schematic diagram of the aluminum alloy gate valve profile blank structure according to an embodiment of this application.
  • Figure 2 is a structural dimension diagram of the aluminum alloy gate valve profile blank according to an embodiment of this application.
  • Figure 3 is a schematic diagram of the structure of an aluminum alloy gate valve according to an embodiment of this application.
  • Figure 4 is a top view of an aluminum alloy shut-off valve according to an embodiment of this application.
  • Figure 5 is a schematic diagram of the aluminum alloy gate valve profile blank structure according to an embodiment of this application.
  • Figure 6 is a structural dimension diagram of the aluminum alloy gate valve profile blank according to an embodiment of this application.
  • Figure 7 is a structural schematic diagram of an aluminum alloy gate valve according to an embodiment of this application.
  • Figure 9 is a cross-sectional view along line A-A in Figure 8 of this application.
  • Figure 10 is a cross-sectional view along line B-B in Figure 8.
  • Figure 12 is a top view of the valve body in an aluminum alloy gate valve according to an embodiment of this application.
  • Figure 14 is a top view of the flange of an aluminum alloy gate valve according to an embodiment of this application.
  • Figure 15 is a longitudinal cross-sectional view of the flange of an aluminum alloy gate valve according to an embodiment of this application.
  • Figure 17 is a structural schematic diagram of the flange in Figure 16.
  • This application provides a method for manufacturing an aluminum alloy gate valve, and an aluminum alloy gate valve manufactured using this method.
  • a method for manufacturing an aluminum alloy gate valve specifically includes the following steps:
  • Shaped extrusion molding Cut the aluminum alloy rod after homogenization treatment in (3) into short rods, heat the short rods to 450-550°C, and use a 2000T or higher positive extrusion press to extrude the material.
  • the temperature of the extrusion die is controlled at 400-500°C.
  • the extrusion molding parameters used in this step are the same.
  • Heat treatment strengthening The extruded profile is cooled to room temperature by water within 20 seconds, then heated to 180°C within 30 minutes within 12 hours and held for 2 hours, then heated to 220°C within 10 minutes and held for 2 hours. After being taken out of the furnace, it is air-cooled to obtain a long section valve seat aluminum alloy profile blank with a cross-shaped longitudinal section.
  • the height h of the long section valve seat aluminum alloy profile blank in the height direction Z is not less than the maximum height of the stop valve in the height direction Z.
  • the width g of the long section valve seat aluminum alloy profile blank is not less than the width of the stop valve.
  • the height h is the height of the longitudinal section of the long section valve seat aluminum alloy profile blank
  • the width g is the width of the longitudinal section of the long section valve seat aluminum alloy profile blank.
  • Cutting and blanking Cut the heat-treated and strengthened long section valve seat aluminum alloy profile blank into multiple aluminum alloy gate valve blanks according to the width value of the gate valve.
  • the width is the width m along the central axis of the gate valve valve nozzle.
  • the width is the width n perpendicular to both the central axis of the valve nozzle and the central axis of the valve core, i.e., the width L4 of the mounting part.
  • the aluminum alloy stop valve is machined on a lathe.
  • the selected aluminum alloy is a heat-treatable aluminum alloy, which can be a 2-series, 6-series, or 7-series aluminum alloy.
  • the temperature and time parameters during melting are determined according to the selected aluminum alloy material type.
  • the casting rod needs to be homogenized and annealed.
  • step (3) different homogenization process conditions are adopted according to the different aluminum alloy types selected. For example, when 6061 aluminum alloy is selected, the aluminum alloy rod is first heated from room temperature to 520°C-540°C within 3 hours and held for 12 hours. Then it is cooled to 300°C with the furnace and then air-cooled to room temperature.
  • this application adopts a pressure forming process, which directly omits the forging step in the relevant methods.
  • This avoids the technical problems of high deformation rate, difficult forming of flange ends, and many defects such as peeling caused by the narrow temperature range, easy sticking to the mold and poor fluidity of aluminum forging, which greatly reduces the scrap rate and realizes a simplified production process.
  • the gate valve manufactured according to the above method is an integrated aluminum alloy gate valve with the valve body and flange integrally formed.
  • the aluminum alloy gate valve includes a valve body 10, which includes a valve tube 11, a reinforcing part 12, a valve tube 13, and a flange 20.
  • the valve tube 11 has a valve cavity 111 and a valve port 112.
  • the valve tube 13 is connected to the valve tube 11.
  • the reinforcing part 12 is disposed on the valve tube 11 and is positioned corresponding to the valve port 112.
  • the reinforcing part 12 extends towards the valve tube 13 and protrudes from the outer wall of the valve tube 11, and is connected to the valve tube 13.
  • the reinforcing part 12 and the portion of the valve tube 11 covered by the reinforcing part 12 are generally rectangular in shape.
  • the valve pipe 13 includes a first connecting pipe 131, a second connecting pipe 132, and a third connecting pipe 133.
  • the first connecting pipe 131 is coaxially arranged with the valve pipe 11.
  • the second connecting pipe 132 and the third connecting pipe 133 are both perpendicular to the valve pipe, and the third connecting pipe 133 is coaxial with the second connecting pipe 132.
  • the second connecting pipe 132 is provided with a connector mounting position 132a. During installation, the connector nut is connected to the connector mounting position 132a.
  • the axis of the valve port is coaxial with the valve pipe 11, and the axis of the second connecting pipe 132 intersects with the axis of the valve port 112.
  • the reinforcing part 12 includes a first body 121 and a second body 122.
  • the first body 121 extends from the valve body 11 towards and connects to the first connecting pipe 131.
  • the second body 122 extends from the valve body 11 towards and connects to the second connecting pipe 132.
  • the first connecting pipe 131 is coaxially arranged with the valve body 11, and the second connecting pipe 132 is perpendicular to the valve body.
  • the cross-section of the first part 121 is rectangular.
  • the cross-section of the first part 121 can also be set to other shapes, which can be selected according to actual needs.
  • cross-section of the second part 122 is rectangular.
  • the cross-section of the first part 121 can also be set to other shapes, which can be selected according to actual needs.
  • the second connecting pipe 132 is provided with a connector mounting position 132a.
  • the connector nut is connected to the connector mounting position 132a.
  • the axis of the valve port 112 is coaxial with the valve body 11, and the axis of the second connecting pipe 132 intersects with the axis of the valve port 112.
  • the valve pipe 11 has a cap mounting position 11a at its top, and the cap is connected to the cap mounting position 11a during installation.
  • the top of the reinforcing part 12 has an extension 124, which extends from the reinforcing part 12 toward the cap mounting position 11a.
  • the extension 124 has a rectangular cross-section.
  • the cross-section of the first part 121 can also be set to other shapes, which can be selected according to actual needs.
  • Flange 20 is located below the lower end face of reinforcing part 12.
  • Flange 20 and valve body 10 are an integral structure.
  • Flange 20 extends along the X-axis in the length direction.
  • the longitudinal section of the aluminum alloy gate valve blank obtained in step (6) is cross-shaped, including a flange forming part 51 and a valve body forming part 40.
  • the flange forming part 51 is the horizontal part of the cross shape
  • the valve body forming part 40 is the vertical part of the cross shape.
  • the relative position of the center point of the flange forming part 51 and the valve body forming part in the height direction depends on the structure of the manufactured aluminum alloy gate valve.
  • the flange forming part 51 is located in the lower middle part of the valve body forming part 40.
  • the valve body forming part 40 includes a first valve body forming part 52 located below the flange forming part 51 and a second valve body forming part 53 located above the flange forming part 51.
  • the first valve body forming part 52 is used for forming the first connecting pipe 131 opposite to the valve pipe
  • the second valve body forming part 53 is used for forming the valve pipe 13, the second connecting pipe 132 and the third connecting pipe 133 located on both sides of the valve pipe 13, and the reinforcing part 12.
  • the first forming part 52 of the valve body is a cuboid.
  • the first forming part 52 of the valve body can also be other shapes, as long as it meets the forming size requirements of the first connecting pipe 131.
  • the outer periphery of the aluminum alloy gate valve blank of this shape is a regular plane or arc surface, which has good machining and positioning capabilities, facilitates the design of machining fixtures, can achieve extremely high machining accuracy, and ensure good sealing performance.
  • the second forming part 53 of the valve body includes a vertical main body 531.
  • two arc-shaped protrusions 532 and two rectangular protrusions 533 are mirror-symmetrically arranged in the height direction Z.
  • the two arc-shaped protrusions 532 are spaced apart from the flange plate, and the center of the arc on the two arc-shaped protrusions 532 is the center point of the valve body forming part in the height direction, and is located on the central axis of the second pipe 132 and the third pipe 133.
  • the diameter of the arc-shaped protrusion 532 is not less than the diameter of the external thread on the second pipe 132.
  • the arc-shaped protrusions 532 are machined to form a second extension 122.
  • the two rectangular protrusions 533 are located on the upper part of the vertical main body 531.
  • the upper end face of the rectangular protrusions 533 is in the same plane as the upper end face of the vertical main body 531.
  • the rectangular protrusions 533 are used for cap thread forming.
  • the aluminum alloy gate valve is designed with an irregular shape.
  • the position of the arc-shaped protrusion 532 is set to facilitate the determination of the machining positions of the second pipe 132 and the third pipe 133 during machining.
  • the rectangular protrusion 533 is set to facilitate the determination of the machining height of the cap mounting position 11a during machining, thereby improving the machining accuracy of the gate valve.
  • the vertical distance between the center point of the valve body forming part 40 in the height direction Z and the bottom end face of the flange forming part 51 is defined as the center height A; the vertical distance between the center point of the valve body forming part 40 in the height direction and its upper end face is defined as the total height B; the width of the vertical main body part 531 is defined as the neck length D; the sum of the widths of the vertical main body part 531 and the two rectangular protrusions 533 is defined as the threaded mating part width C; the radius of the arc-shaped protrusion 532 is defined as the outer diameter of the connector thread E; the vertical distance between the lower end face of the flange forming part 51 and the lower end face of the valve body forming part 40 is defined as the boss height F; and the thickness of the flange forming part 51 is G.
  • the dimensions of the center height A must ensure that the connector nut can be assembled; the overall height B must meet the requirements for valve core installation; the width C of the threaded mating part must meet the dimensional requirements for cap thread machining; the neck length D must meet the dimensional requirements for cap torque strength; the outer diameter E of the connector thread must meet the dimensional requirements for connector thread machining; the boss height F must meet the dimensional requirements for ensuring the strength of the valve body after welding; and the flange thickness G must meet the dimensional requirements for ensuring flange strength. All the above dimensions are determined based on the nominal bore size, and depending on the range of the nominal bore size, each of the above dimensions must meet the size range shown in Table 1.
  • the above-mentioned structural dimensions are designed to minimize subsequent machining while ensuring the machining accuracy and structural strength of the gate valve.
  • the gate valve manufactured according to the above method is a combined aluminum alloy gate valve with a separate valve body and flange.
  • the aluminum alloy gate valve includes a valve body 10, which includes a valve body 11, a reinforcing part 12, and a valve pipe 13.
  • the valve body 11 has a valve cavity 111 and a valve port 112.
  • the valve pipe 13 is connected to the valve body 11.
  • the reinforcing part 12 is disposed on the valve body 11 and is positioned corresponding to the valve port 112.
  • the reinforcing part 12 extends towards the valve pipe 13 and protrudes from the outer wall of the valve body 11, and is connected to the valve pipe 13.
  • valve tube 13 needs to be inserted into the connector nut, and a wrench is used to apply torque to the connector nut to tighten it, so that the valve tube 13 and the connector nut have a hard seal.
  • a cap needs to be connected to the top of the valve body, and a wrench is used to apply torque to the cap and tighten it.
  • the connector nut applies a force to the valve tube 13, which in turn applies a force in the X-axis direction to the reinforcing part 12 and the valve body 11.
  • the cap applies a force in the Y-axis direction to the valve body.
  • the valve body 11 can withstand forces in both directions, thus preventing plastic deformation and avoiding situations where the valve core and valve port 112 do not seal properly or the valve body 11 cracks. This effectively improves the sealing effect and service life of the aluminum alloy gate valve.
  • the reinforcing part 12 covers the outer side of the valve body 11, and the reinforcing part 12 and the valve body 11 it covers are in a rectangular shape as a whole.
  • the aforementioned rectangular shape refers to the fact that the reinforcing part 12 and the portion of the valve body covered by the reinforcing part 12 together present a rectangular shape.
  • the corners and edges of the rectangular shape can also be chamfered to a certain extent, without affecting the expression of a rectangular shape. Since the valve body 10 of the aluminum alloy gate valve is obtained by extruding profiles and then machining, the rectangular shape is easier to process, effectively reducing processing steps, facilitating intensive production, and saving costs.
  • the diameter of the valve body 11 is set to ⁇ 1
  • the diameter of the valve pipe 13 is set to ⁇ 2
  • the width of the reinforcing part 12 is set to D1
  • D1 satisfies the relationship with ⁇ 1 and ⁇ 2 : D1 > ⁇ 1 , D1 > ⁇ 2 . That is, the reinforcing part 12 can completely cover the width of the valve body 11 and the width of the connection between the valve pipe 13 and the valve body 11, ensuring the strength of the connection between the valve pipe 13 and the valve body 11 and reducing the possibility of deformation at this position.
  • the height of the reinforcing part 12 is set to H, and H and ⁇ 2 satisfy the relationship: H > ⁇ 2 . That is, the height and width of the reinforcing part 12 will completely cover the valve pipe 13, ensuring the strength of the connection between the valve pipe 13 and the valve body 11 and reducing the possibility of deformation at this position.
  • the valve body 11, the reinforcing part 12, and the valve pipe 13 are an integral structure, meaning they are machined in one go through machining methods such as turning and cutting.
  • the valve cavity 111 extends through the valve body 11 in the height direction Z.
  • the valve pipe 13 is a hollow structure and communicates with the valve cavity 111.
  • the valve port 112 is located near the connection between the valve pipe 13 and the valve cavity 111, and the valve port 112 is the aforementioned first-line seal.
  • the valve pipe 13 includes a first connecting pipe 131 and a second connecting pipe 132.
  • the reinforcing part 12 includes a first body 121 and a second body 122.
  • the first body 121 extends from the valve body 11 towards the first connecting pipe 131 and is connected to the first connecting pipe 131.
  • the second body 122 extends from the valve body 11 towards the second connecting pipe 132 and is connected to the second connecting pipe 132.
  • the first connecting pipe 131 is coaxially arranged with the valve body 11, and the second connecting pipe 132 is perpendicular to the valve pipe.
  • the cross-section of the first part 121 is rectangular.
  • the cross-section of the first part 121 can also be set to other shapes, which can be selected according to actual needs.
  • cross-section of the second part 122 is rectangular.
  • the cross-section of the first part 121 can also be set to other shapes, which can be selected according to actual needs.
  • the second connecting pipe 132 is provided with a connector mounting position 132a.
  • the connector nut is connected to the connector mounting position 132a.
  • the axis of the valve port 112 is coaxial with the valve body 11, and the axis of the second connecting pipe 132 intersects with the axis of the valve port 112.
  • the valve pipe 13 further includes a third connecting pipe 133, which is coaxially arranged with the second connecting pipe 132, and the first connecting pipe 131 is coaxially arranged with the valve pipe 13.
  • the reinforcing part 12 further includes a third body 123, which extends from the valve body 11 to the third connecting pipe 133 and is connected to the third connecting pipe 133.
  • the cross-section of the third body 123 is rectangular.
  • the cross-section of the first body 121 can also be set to other shapes, which can be selected according to actual needs.
  • valve body 11 has a cap mounting position 11a at its top, and the cap is connected to the cap mounting position 11a during installation.
  • the reinforcing part 12 has an extension 124 that extends from the reinforcing part 12 toward the cap mounting position 11a, and the extension 124 has a rectangular cross-section.
  • the cross-section of the first part 121 can also be set to other shapes, which can be selected according to actual needs.
  • the flange 20 is provided with flange mounting holes 23 that cooperate with the mounting part 14.
  • the torque applied by the wrench to the cap will subject the flange 20 plate of the valve body 10 to shear force.
  • the presence of the flange mounting hole 23 allows the flange 20 to withstand a larger torsional force, making it less prone to cracking.
  • the mounting part 14 can be located on the valve body 11 or on the reinforcing part 12; the specific location can be selected according to actual usage needs. In this embodiment, it is located on the reinforcing part 12, ensuring that the force during flange 20 installation will not cause torsional deformation of the valve body 11, further improving the sealing effect and service life of the valve body 10.
  • the flange 20 is fitted onto the mounting part 14.
  • the mounting part 14 and the reinforcing part 12 are an integral structure, obtained by machining the reinforcing part 12.
  • the flange 20 and the mounting part 14 can be connected by arc welding, gas welding, laser welding, etc. This embodiment uses laser welding, resulting in a strong weld.
  • the welding position and welding length are selected according to actual conditions and are not limited here.
  • the flange 20 is inserted into the mounting portion 14.
  • the mounting portion 14 is a ring groove provided on the reinforcing portion 12.
  • the flange 20 includes a first body 21 and a second body 22.
  • the flange mounting hole 23 includes a first half-hole 231 and a second half-hole 232.
  • the first half-hole 231 is located on the first body 21, and the second half-hole 232 is located on the second body 22.
  • the first body 21 and the second body 22 are inserted into the mounting part 14 and then spliced to form a complete flange 20.
  • the first body 21 and the second body 22 can be fixed together by methods such as arc welding, gas welding, and laser welding.
  • the flange 20 also plays the role of increasing the thickness of the valve body 11, further improving the strength of the valve body 11 and ensuring that the valve body 11 can withstand a large degree of joint torque.
  • transition arcs are provided at the four corners of the flange mounting hole, and the arc angle is greater than 90°.
  • the flange has a symmetrical double-hole structure.
  • the flange can also adopt various mounting hole forms such as single-sided single-hole and single-sided double-hole, which can be selected according to actual needs.
  • the length of the flange mounting hole 23 is set to L1
  • the length of the mounting part 14 is set to L2.
  • L1 and L2 satisfy the relationship: 0.05mm ⁇ L1 - L2 ⁇ 0.4mm.
  • the values of L1 - L2 can be 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.35mm, 0.4mm, etc.
  • the length of the flange mounting hole 23 is set to L1
  • the length of the mounting part 14 is set to L2 .
  • B and b satisfy the relationship: 0.1 ⁇ L1 - L2 ⁇ 0.3 mm. Consequently, there is a certain gap in the width direction between the flange mounting hole 23 and the mounting part 14, ensuring that the flange 20 can be easily installed onto the mounting part 14, while the gap is not too large to ensure sufficient strength of the flange 20 after welding.
  • the values of L1 - L2 can be 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, etc. Of course, the values of L1 - L2 can also be selected according to the actual situation, which will not be elaborated here.
  • the width of the flange mounting hole 23 is set to L3
  • the width of the mounting part 14 is set to L4.
  • L3 and L4 satisfy the relationship: 0.05mm ⁇ L3 - L4 ⁇ 0.4mm.
  • the values of L3 - L4 can be 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.35mm, 0.4mm, etc.
  • the width of the flange mounting hole 23 is set to L3
  • the width of the mounting part 14 is set to L4.
  • L3 and L4 satisfy the relationship: 0.1 ⁇ L3 - L4 ⁇ 0.3 mm. Consequently, there is a certain gap between the flange mounting hole 23 and the mounting part 14 in the length direction, ensuring that the flange 20 can be easily installed onto the mounting part 14, while the gap is not too large to ensure sufficient strength of the flange 20 after welding.
  • the values of L3 - L4 can be 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, etc. Of course, the values of L3 - L4 can also be selected according to the actual situation, which will not be elaborated here.
  • the thickness of flange 20 is set to D3 , where D3 ⁇ 5mm.
  • the value of D3 can be 5mm, 10mm, 15mm, 20mm, etc.
  • the value of D3 can also be selected according to the actual situation, which will not be detailed here.
  • the shape of the flange mounting hole 23 can be set to, but is not limited to, ellipse, rectangle, or square.
  • the flange mounting hole 23 is set to a rectangular shape, and in some embodiments it is a rectangle.
  • the inner angle 20a of the flange mounting hole 23 is set as a chamfered structure.
  • a chamfered structure refers to the inner angle 20a being treated as a chamfer; the chamfer angle can be selected according to actual needs and is not limited here. Since profile extrusion cannot form right angles, the valve body 11, reinforcing part 12, and mounting part 14 will all have a certain degree of roundness. Therefore, the inner angle 20a of the flange mounting hole 23 is set as a chamfer to ensure that the flange 20 can be smoothly assembled with the valve body 10.
  • the upper end 14a of the mounting portion 14 is also chamfered to facilitate the installation of the flange 20.
  • the angle of the chamfer can be selected according to actual needs and is not limited here.
  • the longitudinal section of the aluminum alloy gate valve blank obtained in step (6) is cross-shaped, including a valve body forming part 40.
  • the valve body forming part 40 includes a reinforcing part forming part 41, a valve body forming part 42 and a first connecting pipe forming part 43 located at the upper and lower ends of the reinforcing part forming part 41, and a second connecting pipe forming part 44 and a third connecting pipe forming part 45 located on the left and right sides of the reinforcing part forming part 41.
  • the aluminum alloy gate valve blank only needs to be extruded into a long cross structure, then cut according to the width of the valve body, and then machined into a valve seat structure. A flange plate is then added to the valve seat structure to achieve the desired gate valve effect.
  • this application only maintains the cross-shaped structure in the front view, and the width of the blank is reduced to the actual width of the valve body during cutting, thus significantly saving material usage.
  • a first body 121 is provided on the lower part of the reinforcing part forming part 41, and a mounting part 14 is provided on the lower end surface of the first body 121.
  • the upper end of the mounting part 14 is chamfered at the connection with the first body 121. This design further reduces the amount of machining required and improves production efficiency.
  • the reinforcing part forming part 41 is provided with a third body forming part 46 on the upper part of the valve body forming part 42 near the third connecting pipe 133.
  • the upper end surface of the third body forming part 46 is higher than the upper end surface of the third connecting pipe forming part 45. It can be understood that during irregular shape pressure forming, the upper end of the third body forming part 46 and the upper end surface of the third connecting pipe forming part 45 form a height difference, which facilitates the accurate determination of the processing position of the third connecting pipe 133 during the machining stage, thereby improving the processing accuracy and efficiency of the gate valve.
  • the upper end face of the reinforcing part 41 on the side of the valve body forming part 42 near the third connecting pipe 133 is connected to the third connecting pipe forming part 45 by a downwardly sloping slope.
  • other transition forms can be used between the reinforcing part 41 and the third connecting pipe forming part 45, depending on actual needs.
  • the upper end face of the reinforcing part 41 located on the side of the valve body forming part 42 near the second connecting pipe 132, is in the same plane as the second connecting pipe forming part 44. It is understood that since the second body 122, the third body 123, and the extension 124 are all mirror-symmetrically arranged on both sides of the valve body forming part 42 relative to its central axis, if a precision positioning dividing line is provided on one side, the other side can be omitted. Of course, in other embodiments, a height difference can also be provided between the upper end face of the reinforcing part 41 and the upper end face of the second connecting pipe forming part 44, using an inclined surface or other forms of transition connection, depending on actual needs.
  • the first pipe forming part 43 is located below the mounting part 14.
  • the length of the first pipe forming part 43 is greater than the length of the mounting part 14.
  • the upper part of the side of the first pipe forming part 43 in the width direction is connected to the lower end of the mounting part 14 through an inclined surface that slopes from the outside to the inside. It can be understood that the length difference between the mounting part 14 and the first pipe forming part 43 makes the dividing line between the mounting part 14 and the first pipe forming part 43 more prominent, which facilitates the cutting and positioning of the first pipe forming part 43 during machining. On the other hand, it ensures that the welding position has sufficient wall thickness after machining.
  • an extension forming part 47 is provided on the upper part of the reinforcing forming part 41.
  • the extension forming part 47 is located directly below the valve body forming part 42, and the two are coaxially arranged.
  • the length of the extension forming part 47 is less than the width of the valve body forming part 42.
  • the lower part of the valve body forming part 42 in the width direction is connected to the upper end of the extension forming part 47 through an inwardly inclined surface.
  • the valve body forming part 42 is used for forming the valve pipe 13 and the cap mounting position 11a.
  • the length difference between the extension forming part 47 and the valve body forming part 42 makes the dividing line between the two prominent, which facilitates quick and accurate positioning during machining and improves production efficiency.
  • it meets the dimensional requirements for cap thread machining and cap torque strength.
  • the vertical distance between the center point of the valve body forming part 40 in the height direction and the bottom end face of the third connecting pipe forming part 45 is defined as the center height *a*
  • the vertical distance between the center point of the valve body forming part 40 in the height direction and its upper end face is defined as the total height *b*
  • the length of the extension forming part 47 is defined as the neck length *d*
  • the length of the valve body forming part 40 is defined as the threaded mating part width *c*
  • the width of the third connecting pipe forming part 45 is defined as *e*
  • the height of the first connecting pipe forming part 43 is defined as the boss height *f*.
  • the center height *a* must ensure that the connector nut can be assembled, the total height *b* must meet the requirements for valve core installation, the threaded mating part width *c* must meet the dimensional requirements for cap thread processing, the neck length *d* must meet the dimensional requirements for cap torque strength, the width *e* of the third connecting pipe forming part 45 must meet the dimensional requirements for connector thread processing, and the boss height *f* must meet the dimensional requirements for ensuring the strength of the valve body after welding.
  • the dimensions mentioned above are determined based on the nominal diameter. Depending on the range of the nominal diameter, the dimensions mentioned above must meet the size range shown in Table 2.
  • the above-mentioned structural dimensions are designed to minimize subsequent machining while ensuring the machining accuracy and structural strength of the gate valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Housings (AREA)

Abstract

Procédé de fabrication d'une soupape d'arrêt en alliage d'aluminium, le procédé comprenant les étapes suivantes : (1) sélection et fusion de matériau d'alliage d'aluminium ; (2) coulée, impliquant : la coulée d'une masse fondue d'alliage d'aluminium dans une tige d'alliage d'aluminium ; (3) traitement d'homogénéisation de la tige en alliage d'aluminium, consistant à : placer la tige en alliage d'aluminium obtenue par refroidissement à l'étape (2) dans un four d'homogénéisation pour le traitement d'homogénéisation ; (4) moulage par extrusion de forme spéciale, comprenant : la découpe de la tige en alliage d'aluminium, qui a subi le traitement d'homogénéisation à l'étape (3), en une tige courte, et la soumission de la tige courte à une extrusion de forme spéciale pour former un produit de section présentant une section longitudinale en forme de croix ; (5) renforcement au moyen d'un traitement thermique ; (6) découpe en ébauches, impliquant : la découpe d'une ébauche de profilé en alliage d'aluminium de siège de soupape à section longue, qui a été renforcée au moyen du traitement thermique, en une pluralité d'ébauches de soupape d'arrêt en alliage d'aluminium ; et (7) tournage de celles-ci en soupapes d'arrêt en alliage d'aluminium.
PCT/CN2025/103420 2024-07-02 2025-06-25 Procédé de fabrication d'une soupape d'arrêt en alliage d'aluminium et soupape d'arrêt en alliage d'aluminium Pending WO2026007770A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202421545152.5U CN222669079U (zh) 2024-07-02 2024-07-02 铝合金截止阀
CN202421545152.5 2024-07-02
CN202411389529.7 2024-09-30
CN202411389529.7A CN119282607B (zh) 2024-09-30 2024-09-30 一种铝合金截止阀制造方法及铝合金截止阀

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WO2026007770A1 true WO2026007770A1 (fr) 2026-01-08

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CN113106309A (zh) * 2021-04-19 2021-07-13 深圳市华加日西林实业有限公司 铝合金、铝合金型材的制备方法
CN220102216U (zh) * 2023-05-22 2023-11-28 浙江盾安禾田金属有限公司 截止阀阀座及其截止阀
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KR20240095503A (ko) * 2022-12-18 2024-06-25 주식회사 세림티앤디 수소자동차 연료공급장치용 레귤레이터의 어퍼 바디 제조 방법 및 그 장치
CN119282607A (zh) * 2024-09-30 2025-01-10 浙江盾安人工环境股份有限公司 一种铝合金截止阀制造方法及铝合金截止阀
CN222669079U (zh) * 2024-07-02 2025-03-25 盾安环境技术有限公司 铝合金截止阀

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* Cited by examiner, † Cited by third party
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CN105318071A (zh) * 2014-08-01 2016-02-10 浙江三花汽车零部件有限公司 热力膨胀阀的制造方法及连接方法
CN105014320A (zh) * 2015-07-20 2015-11-04 中山市祥丰瓦斯器材制品有限公司 一种阀体的制造方法
CN113106309A (zh) * 2021-04-19 2021-07-13 深圳市华加日西林实业有限公司 铝合金、铝合金型材的制备方法
KR20240095503A (ko) * 2022-12-18 2024-06-25 주식회사 세림티앤디 수소자동차 연료공급장치용 레귤레이터의 어퍼 바디 제조 방법 및 그 장치
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CN222669079U (zh) * 2024-07-02 2025-03-25 盾安环境技术有限公司 铝合金截止阀
CN119282607A (zh) * 2024-09-30 2025-01-10 浙江盾安人工环境股份有限公司 一种铝合金截止阀制造方法及铝合金截止阀

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