JPH0143871B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a valve assembly, particularly a high-temperature
This invention relates to a valve assembly suitable for use with high pressure fluids.

Generally, high temperature and high pressure, e.g.
For safety, valve assemblies used in conduit systems through which fluids of approximately 105 psi (1600〓) and approximately 1493 kg/cm ² (105 psi) are passed must be strong enough to withstand high internal pressures and have an outer surface of approximately 121℃ (approx.
It must have insulation properties to maintain a relatively low temperature of about 250㎓). Furthermore, the construction of the valve assembly must be such that it can reliably maintain its functionality despite thermal expansion or contraction of the components.

This invention was made in view of this point, and its purpose is to be able to withstand high temperature and high pressure fluids, maintain its function despite the expansion and contraction of structural members due to heat, and to maintain the temperature of the outer surface. An object of the present invention is to provide a valve assembly that can have a temperature lower than that of a fluid passing through the valve assembly.

In order to achieve the above object, the valve assembly of the present invention has an inner shell and an outer shell coaxially arranged with a predetermined distance apart, and a valve actuator support between the opposing ends of the inner shell and the outer shell. is installed. The valve actuator support extends generally perpendicular to the longitudinal axis of the inner shell. The outer surface of the inner shell is substantially entirely covered with a layer of elastic heat insulating material, and the layer of heat insulating material is formed to a thickness that fits within the space between the inner shell and the outer shell. Also, a body of hard refractory material is placed in the remaining space between the inner and outer shells. Valve actuator means is supported within the valve actuator support and projects into the inner shell. A movable valve member is disposed within the inner shell and connected to the valve actuator means for movement between an open position and a closed position to control fluid flow through the inner shell. The movable valve includes an anchoring means that resists axial movement of the inner shell and maintains the inner shell within the range of the movable valve member, yet does not impede radial movement of the inner shell relative to the outer shell and the layer of insulating material. It is attached to the inner shell adjacent to the member. The inner and outer shells are provided with connection means at opposite ends of each for attaching the valve assembly to the conduit.

To explain this invention in more detail, the valve assembly has a ventilate tube-shaped inner shell having a throat portion at the center, and a movable valve member is disposed within the throat portion. The anchoring means includes two sets of pins disposed adjacent to opposite sides of the movable valve member, each set being spaced apart from each other along the circumferential direction of the throat portion and each set being aligned with the longitudinal axis of the inner shell. It has a plurality of pins extending perpendicular to the Also, one end of each pin is attached to the throat part of the inner shell,
Extending radially outwardly from the throat and into a hole formed in the body of refractory material. The two sets of pins prevent longitudinal movement of the throat relative to the outer shell and permit radial movement of the inner and outer shells so that the operational function of the movable valve member is maintained.

Further, the valve actuator support includes a pair of circumferential members arranged to slide telescopically relative to each other in radial movement of the inner and outer shells.

According to the valve assembly of the present invention configured as described above, it is possible to withstand high temperature and high pressure fluid, and to maintain the function of the valve assembly even when each component expands or contracts due to heat. Can be done. Additionally, the outer surface temperature of the valve assembly can be lower than the temperature of the fluid passing through it.

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, a valve assembly 10 according to the present invention includes an inner shell 12 in which a fluid flow passage 14 is defined, and an inner shell 12 coaxially with and separated from the inner shell by a predetermined distance. Arranged outer shell 16
and a valve actuator support 18 extending substantially perpendicular to the longitudinal axis of the inner shell. The valve assembly 10 also includes a valve actuator assembly 20 supported by the valve actuator support 18 and a valve actuator assembly 20 disposed within the inner shell 12 and connected to the valve actuator assembly and connected to the flow path 14. a movable valve member 22 for controlling fluid flow therethrough.

The inner shell 12 has a throat portion 24 located at the center.
, a funnel-shaped intermediate section 26 extending from each end of the throat section, and a generally cylindrical tubular end section 28 connected to the intermediate section. Intermediate portion 26 and end portions 28 are each formed from a relatively thin metal wall, and throat portion 24 is formed from a relatively thick metal wall.

The outer shell 16 has a cylindrical central portion 30 and flanged end portions 32 . The outer shell 16 is disposed coaxially with the inner shell 12 and has an inner diameter that is greater than the outer diameter of the end 28 of the inner shell so that an annular space 34 is defined therebetween. The flange-like end 32 has a plurality of circumferentially spaced through holes 36 that connect the holes 36 with corresponding holes (not shown) in a fluid conducting means or conduit (none of which is shown). A connecting bolt (not shown) is inserted into. The metal wall of the outer shell 16 is formed relatively thick so as to have the strength to withstand the internal pressure of the fluid. This internal pressure is conducted to the outer shell 16 as described below.

The valve actuator support 18 includes a bush 38 acting as an inner cylinder and an outer cylinder 40,
The outer cylinder has a larger diameter than the inner cylinder and is disposed coaxially with the bushing 38 so as to define an annular space 42 therebetween. The outer cylinder 40 has a flange-like end 44 and the other end is connected to the central portion 30 of the outer shell 16.
It is attached by welding within an opening 46 formed in the. Further, one end of the bush 38 is fixed by welding to a disk 48 attached to a flange-like end 44 of the outer cylinder 40 by bolts 50. The central axes of the bush 38 and the outer cylinder 40 are located substantially perpendicular to the longitudinal axis of the inner shell 12. The small diameter portion 39 of the bush 38 is housed within a cup-shaped guide sleeve 52 which forms part of the valve actuator support 18 .
This guide sleeve 52 has a closed end 53, is disposed coaxially with the bush 38, and is fixed by welding within an opening formed in the wall of the throat portion 24 of the inner shell 12. The closed end 53 of the guide sleeve 52 has an opening in communication with the flow passageway 14 through which the shaft 54 of the valve actuator assembly 20 extends. The guide sleeve 52 also has a recess at its closed end for accommodating a washer 56, which supports the disk-shaped movable valve member 22.
The overall length of the bushing 38 is such that its inner end is spaced a predetermined distance S from the closed end 53 of the guide sleeve 52, and the small diameter end 39 is such that its annular shoulder is spaced a predetermined distance from the upper end of the guide sleeve 52. They have lengths such that they are spaced apart by an interval S. This spacing S allows for relative radial movement of guide sleeve 52 and bush 38 when heat causes radial changes in inner shell 12 and outer shell 16. The bush 38 has an axially extending bore therein which is connected to the shaft 54.
is rotatably housed.

The shaft 54, which forms part of the valve actuator assembly 20, includes the bush 38, the closed end 53 of the guide sleeve 52, and the washer 5.
6 into the recess defined by the enlarged portion of the movable valve member 22. Movable valve member 22 is attached to the end of shaft 54 in any suitable manner, such as by tapered pin 58;
As the shaft rotates, it rotates from the illustrated closed position to the open position. Shaft 54 and bush 38
A packing ring 60 is disposed in the upper end hole of the bushing so as to seal the gap between the bushing and the bore surface, and a packing retainer 62 is attached to the outer end of the bushing with a bolt 65. The valve actuator assembly 20 also includes an electric, pneumatic, or hydraulic rotary drive device 65 that causes the shaft 54 to rotate,
As a result, the valve member 22 is rotated.

Valve assembly 10 includes insulation means to maintain the temperature of outer shell 16 below the temperature of the fluid within flow passageway 14 . For example, if the fluid in flow passageway 14 is about 1600 degrees Celsius, the insulation means maintains the outer surface of shell 16 at about 250 degrees Celsius. According to an embodiment, the insulation means comprises a layer 66 of a resilient insulation material, for example a textile ceramic, a blanket, such as an insulation blanket from AP Green Company, USA, and a body 68 of fire-retardant material. .

A layer of insulating material 66 is provided to cover the entire outer surface of each of inner shell 12, bush 38, and guide sleeve 52. Heat insulating material layer 66
is wrapped around the inner shell and the guide sleeve after the guide sleeve 52 is attached to the inner shell 12. However, it is necessary to wrap them before they are installed within the shell 16. This heat insulating material layer 66 is compressed to about half the thickness of the base and wrapped with, for example, a commercially available polyester tape covered with a protective tape. Similarly, the outer surface of bushing 38 is covered with a layer of insulating material 66 down to the shoulder defined by small diameter end 39 . Further, the heat insulating material layer 66 may be wrapped around the outer cylinder 40. The bush 38 is bolted to the outer cylinder 40 via its flange portion 48, and the movable valve member 48 is connected to the throat portion 2 by the shaft 54.
4, the inner shell 12 is placed coaxially into the outer shell 16 and the bush 38 and outer sleeve 40 are positioned. Thereafter, the space 3 between the outer shell 16 and the outer cylinder 40 and the insulating material layer 66
A refractory material is injected into 4,42. The injected refractory material hardens to form a refractory material body 38;
The relatively thick walls of the outer shell 16 work together to provide the valve assembly 10 with strength to withstand high fluid pressures and provide further insulation.

The body of refractory material 68 is maintained within the shell 16 during curing by two sets of circumferentially spaced anchors 70 . As can be clearly seen in FIG.
is welded to the inner surface of the In addition, the refractory material body 6
No. 8 has high compressive strength.

The functionality of the valve assembly 10 is maintained despite differential movement of the inner shell 12 and outer shell 16 by the anchoring means which securely secures the throat portion against such movement. Preferably, the anchoring means comprises two sets of pins. Each set of pins includes a plurality of pins 72 spaced apart from each other along the circumferential direction, and each pin has one end attached to the throat portion 24 and the other end extending radially outward. Further, each set of pins is arranged on a plane perpendicular to the longitudinal axis of the inner shell 12, and this plane is located parallel to the plane on which the other set of pins is arranged. Each group of pins is disposed on either side of the longitudinal axis of shaft 54 and adjacent movable valve member 22 . Each set has five pins 72, which are preferably circumferentially spaced about 60 DEG apart from each other, as best seen in FIG.
Each pin 72 extends into a blind hole 74 formed in the refractory body 68 and having a depth greater than the pin. The throat portion 24 is thus fixed against axial movement of the refractory body 68 and shell 16, but free against radial movement thereof. Moreover, each pin 72 is
In order to avoid the formation of a hot spot on the outer shell 16 due to heat transfer through the pins, it is formed into a cylindrical shape, and the inside thereof is filled with a heat insulating material 76.

As can be clearly seen from FIG. 3, the blind hole 74 is formed by filling the inside of the pin 72 with a heat insulating material and then placing a polyethylene gap 78 over the end of the pin and temporarily securing it with taping 79. be done. A layer of insulating material 66 is provided around the outer surface of inner shell 12 and pin 72 . The refractory material injected into space 34 hardens to envelop each pin 72 and cap 78. At high temperatures, cap 78 melts and evaporates, resulting in a blind hole 74 having a depth greater than pin 72. This blind hole 74 then allows for radial displacement of the pin 72 relative to the refractory body 68.

The valve assembly 10 also includes an annular buffle 80 attached to the throat portion 24 and the guide sleeve 52. Batsuful 80
is disposed in a plane perpendicular to the longitudinal axis of the valve assembly 10 and in which the movable valve portion is located in the closed position. Because the seam between the end 28 of the inner shell 12 and the fluid-conducting element (not shown) is not liquid-tight, the pressure differential when the movable valve member is partially or fully occluded will cause fluid to leak through the seam and create a relatively porous hole. Fluid may seep into the layer of insulating material 66. Buffle 80 acts to prevent fluid flow from attempting to bypass such a movable valve member. Buffle 80 extends into a large diameter annular groove 82 formed in layer 66 of insulating material and body 68 of refractory material. The baffle 80 can therefore be radially displaced relative to the annular groove 82 without interfering with the radial displacement of the throat portion 24 relative to the shell 16 and the refractory material 68. This annular groove 82, like the blind hole 74,
Prior to injecting the refractory material into the spaces 34, 42, a buffle 80 is formed in the refractory body 68 by attaching an annular polyester cap to the circumferential end thereof. A flexible gasket 84 is also inserted between disk 48 and flange end 44 to prevent gas leakage through the insulating material of valve actuator assembly 18.

As described above, the valve assembly having the above structure can maintain the function of the valve assembly even when the valve assembly components expand or contract due to heat, and has high compressive strength. This makes it possible to control high-temperature, high-pressure fluids. Additionally, the valve assembly has sufficient thermal insulation so that its outer surface temperature can be lower than the temperature of the fluid within the valve.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of a valve assembly according to an embodiment of the present invention, and FIG. 2 is a line 2--2 in FIG. 1.
3 is a partially enlarged sectional view showing a part of the anchor means, and FIG. 4 is a partially cutaway partially enlarged view showing the anchor. 10...Valve assembly, 12...Inner shell,
16... Outer shell, 18... Valve actuator support, 20... Valve actuator assembly, 22... Movable valve member, 68... Refractory material body, 66... Insulating material layer.

Claims (1)

Claims: 1. a radially spaced and coaxially disposed inner shell and an outer shell; a valve actuator support connected to the outer shell and the inner shell between opposite ends of each; a layer of elastic insulating material having a thickness that occupies part of the space between the outer shell and the inner shell and covering almost the entire outer surface of the inner shell; a refractory material body disposed in the remaining space; a valve actuator means supported within the valve actuator support and extending into the inner shell; a movable valve member connected to the yuator means and moved between its closed position and its open position by the valve actuator means to control fluid flow through the inner shell; an outer shell and a refractory material body; to maintain the inner shell within the range of the movable valve member against axial displacement of the inner shell relative to the outer shell and the refractory material body without impeding radial displacement of the inner shell relative to the refractory body;
A valve assembly comprising: an anchor means attached to the inner shell adjacent the movable valve member; and connection means disposed at opposite ends of each to connect the outer shell and the inner shell to a fluid conduit. 2. The valve assembly according to claim 1, wherein the valve actuator support has means for allowing relative radial displacement between the inner shell and the outer shell. 3. The valve actuator support has an inner cylinder and an outer cylinder, and the means includes a guide sleeve having one end attached to the inner shell and slidably housing the one end of the inner cylinder. range 2nd
Valve assembly as described in section. 4. The valve actuator support has an inner cylinder and an outer cylinder coaxially arranged so as to be spaced apart from each other in the radial direction, and one end of each of the inner cylinders is attached to the inner shell and the outer shell. It has two parts arranged like a telescope, the space between the inner cylinder and the outer cylinder communicates with the space between the inner shell and the outer shell, and the inner cylinder has a heat insulator wrapped around its outer surface. A valve assembly according to claim 1, comprising a refractory material disposed in a space between the insulating material and the outer sleeve. 5. The movable valve member is a rotatably supported disk having a diameter that conforms to the inner surface of the inner shell to communicate or block fluid flow within the inner shell. Bubbly assembly as described in section. 6. The anchoring means has a plurality of pins each attached to the inner shell and extending radially from the inner shell into the refractory body and circumferentially spaced from each other, the pins being spaced apart from each other along the longitudinal axis of the inner shell. 2. The valve assembly according to claim 1, wherein the valve assembly is arranged in a plane orthogonal to the valve assembly. 7. Each of the pins extends into a blind hole formed in the refractory body, the blind hole having a depth greater than the length of the pin to allow the pin to slide axially within the blind hole. A valve assembly according to claim 6. 8. The anchor means includes two groups of pins, each consisting of a plurality of pins spaced apart from each other along the circumferential direction, each arranged in a plane perpendicular to the longitudinal axis of the inner shell, each pin having one end. attached to the inner shell and extending radially from the inner shell to a hole in the refractory body, the hole extending the length of the pin such that the pin is free to move in its axial direction and allow radial displacement of the inner shell relative to the outer shell. 2. The valve assembly of claim 1, wherein the valve assembly has a depth that is greater than the length of the valve assembly. 9. The valve assembly according to claim 8, wherein each of the pins has a cylindrical shape and an interior thereof is filled with a heat insulating material. 10 the valve actuator support has an axis extending substantially perpendicular to the longitudinal axis of the inner shell;
The anchoring means includes a plurality of pins spaced apart from each other along the circumferential direction, each having two sets of pins arranged in a plane perpendicular to the longitudinal axis of the inner shell, each set of which is connected to a valve actuator. Located on each side of the axis of the assembly, each pin is attached at one end to the inner shell and extends radially from the inner shell into a blind hole in the refractory body, the blind hole being such that the pin is axially movement having a depth greater than the length of the pin to permit radial displacement of the inner shell relative to the outer shell and formed to prevent longitudinal displacement of the inner shell relative to the outer shell; Valve assembly according to scope 1. 11. The valve assembly according to claim 10, wherein each of the pins has a cylindrical shape and an interior thereof is filled with a heat insulating material. 12. The valve assembly according to claim 1, wherein the inner shell is in the shape of a ventilate tube having a throat portion at the center. 13. The valve assembly according to claim 12, wherein the movable valve member is disposed at a throat portion of the inner shell. 14. The valve assembly of claim 12, wherein the throat has a greater wall thickness than the rest of the inner shell, and the anchor means is attached to the throat. 15. The connecting means of the outer shell comprises a flange-like end having a plurality of circumferentially spaced bolt holes, and the connecting means of the inner shell has at each end a plurality of holes for connecting adjacent conduits. The valve assembly of claim 1 having a large diameter end for receiving one end of the shell. 16 The inner shell has a throat portion, and the anchoring means has at least one group of pins each having one end attached to the throat portion and each pin group being circumferentially spaced apart, and the anchoring means has at least one set of pins each having one end attached to the throat portion and each having a plurality of pins spaced apart along the circumferential direction. A valve assembly as claimed in claim 1 which prevents longitudinal expansion and contraction. 17. Claim 1, wherein said inner shell has attachment means for maintaining said layer of insulating material on the inner shell.
Valve assembly as described in section. 18 An inner shell made of metal and regulating the flow of high-temperature, high-pressure fluid; an outer shell made of metal and having a thicker wall thickness than the inner shell, spaced apart from the inner shell and surrounding the inner shell. has an inner cylinder and an outer cylinder that are fluid-tightly attached to the inner shell and the outer shell and are spaced apart from each other and coaxially arranged; a valve actuator support extending perpendicularly to the longitudinal axis;
a valve actuator member disposed within and supported within the inner cylinder of the valve actuator support and extending into the inner shell; disposed within the inner shell and connected to the valve actuator member; a movable valve member that is moved between its closed position and its open position by a valve actuator member to control the flow of liquid through the inner shell; a resilient insulating material layer that occupies part of the space between the shell; the remaining space between the inner shell and the outer shell and the space between the inner cylinder and the outer cylinder of the valve actuator support; with a refractory material body having a compressive strength; mounted approximately centrally between opposite ends of the inner shell such that the refractory material body is maintained in the inner shell and allowing for radial variation of the inner shell relative to the refractory material body; A valve assembly comprising: anchoring means for resisting axial changes; and connecting means located at opposite ends of each of the inner and outer shells to connect the inner and outer shells to a conduit. 19. The valve assembly according to claim 18, wherein the movable valve member comprises a disk that fluid-tightly engages the inner surface of the inner shell and is rotatable integrally with the shaft of the valve actuator member. . 20. said anchoring means having two sets of circumferentially spaced pins, each set being located on a respective side of the axis of the valve actuator assembly; The pin is attached at one end to the inner shell and extends radially from the inner shell into a blind hole in the refractory body, which blind hole allows the pin to move in its axial direction and radially displace the inner shell relative to the outer shell. 19. The valve assembly of claim 18, wherein the valve assembly has a depth greater than the length of the pin and is configured to prevent longitudinal displacement of the inner shell relative to the outer shell. 21. The valve assembly according to claim 20, wherein each of the pins has a cylindrical shape and an interior thereof is filled with a heat insulating material. 22. The valve assembly according to claim 20, wherein the inner shell is in the shape of a ventilate tube having a throat portion, and the respective pin groups are attached to the throat portion in parallel with each other and spaced apart from each other. 23. The valve assembly of claim 22, wherein the throat portion has a thicker wall thickness than other portions of the inner shell.