CN116146830A - An assembled thermal insulation pipe groove and its construction method - Google Patents

Abstract

The invention discloses an assembled heat-insulating pipe groove and a construction method thereof. The drain pipe is not smooth in drainage due to the fact that the pipe orifice is frozen due to insufficient heat insulation performance. The invention comprises two side tube grooves and a plurality of middle tube grooves; the side pipe groove and the middle pipe groove are both composed of a pipe body I and a pipe body II, and the pipe body I and the pipe body II are semicircular; the pipe bodies I and II comprise polypropylene fiber concrete layers and polyurethane heat-insulating layers; semicircular steel connecting sleeves I and II are arranged at the joint of the side pipe groove and the middle pipe groove, and arc-shaped steel sheets are arranged at the joint of the steel connecting sleeves I and II; and a heat tracing cable is arranged at the inner side of the side pipe groove. The invention can prevent the water flow from freezing by active heating; the polypropylene fiber concrete layer plays a role in protecting the heat preservation layer, so that the heat preservation layer is prevented from being damaged due to the fact that frozen soil is melted, and the shrinkage and microcrack conditions of the concrete in the early hardening stage can be reduced by the polypropylene fiber.

Description

An assembled thermal insulation pipe groove and its construction method

technical field

The invention belongs to the technical field of drainage pipe heat preservation, and in particular relates to an assembled heat preservation pipe groove and a construction method thereof.

Background technique

Drainage pipes are mainly responsible for the drainage of rainwater, sewage, farmland irrigation and drainage, and are divided into plastic drainage pipes, concrete pipes and reinforced concrete pipes. However, in the Qinghai-Tibet Plateau area, the drainage pipes often freeze due to insufficient thermal insulation performance, especially the mouth of the pipes, which makes the drainage pipes poor and freezes again, thus causing a vicious circle and various freezing damages. In addition, due to the thawing of permafrost, the settlement of the soil around the drainage pipe is uneven, which will cause the insulation layer to be pulled and destroyed.

Contents of the invention

In order to make up for the deficiencies of the prior art, the present invention provides an assembled thermal insulation pipe groove and its construction method, which can resist freeze-thaw damage, solve the problem of icing at the drain, and can also reduce the impact on the thermal insulation layer caused by the settlement of the soil layer. damage, thus ensuring the insulation effect of the insulation layer.

In order to achieve the above object, the technical solution adopted in the present invention is:

An assembled thermal insulation pipe groove, characterized in that it includes two side pipe grooves and several middle pipe grooves;

Both the side pipe groove and the middle pipe groove are composed of a pipe body I and a pipe body II, and the pipe body I and the pipe body II are semicircular; the pipe body I includes a polypropylene fiber concrete layer I and a polyurethane insulation layer I, so The pipe body II includes a polypropylene fiber concrete layer II and a polyurethane insulation layer II;

The splicing position of the side pipe groove and the middle pipe groove is provided with a semicircular steel connection sleeve I and a steel connection sleeve II, and the steel connection sleeve I and the steel connection sleeve II are respectively connected to the pipe body I and The pipe body II is fixedly connected by thread; the splicing position of the steel connecting sleeve I and the steel connecting sleeve II is provided with an arc-shaped steel sheet, and the arc-shaped steel sheet and the steel connecting sleeve I and the steel connecting sleeve II are threaded. fixed connection.

Further, the connection position between the pipe body I and the pipe body II is in a staggered shape;

Further, the pipe body II of the side pipe groove is provided with a heating cable along the inner side of the polyurethane insulation layer II, the heating cable is arranged in an S-shaped curve, and the pipe body II is provided with a cable outlet;

Further, the inner surface of the pipe body II of the side pipe groove is provided with a temperature sensor, and the temperature sensor is connected to a temperature display;

Further, the polypropylene fiber content of the polypropylene fiber concrete layer I and polypropylene fiber concrete layer II is 0.15%-0.5%;

Further, two layers of steel wire mesh are arranged in the polypropylene fiber concrete layer I and the polypropylene fiber concrete layer II;

Further, threaded sleeves are pre-embedded in the polypropylene fiber concrete layer I and polypropylene fiber concrete layer II at the splicing ends of the side pipe groove and the middle pipe groove;

A construction method for an assembled thermal insulation pipe groove, comprising the following steps:

Step 1: According to the length and position relationship of the assembled thermal insulation pipe grooves of two adjacent sections, first place the steel connecting sleeve II in the dug trench to ensure that when placing the assembled thermal insulation pipe grooves of two adjacent sections, The joint of the two is at the center line of the steel connecting sleeve II;

Step 2: According to the positions of the holes on the threaded sleeve and the steel connecting sleeve II and the centerline position of the steel connecting sleeve II, successively place the respective pipe bodies II of the adjacent pipe grooves, and then place the drain pipe;

Step 3: According to the staggered positional relationship between the pipe body II and the ends of the pipe body I, place the pipe body I of the first section of the assembled thermal insulation pipe groove;

Step 4: According to the position of the threaded sleeve, place the steel connecting sleeve I on the pipe body I of the first pipe groove;

Step 5: Connect and fix the pipe body I and pipe body II of the first assembled thermal insulation pipe groove with the steel connection sleeve I and the steel connection sleeve II respectively with bolts, and the connection between the steel connection sleeve I and the steel connection sleeve II The space is fixed with arc-shaped steel sheets;

Step 6: According to the staggered positional relationship between the pipe body II and the end of the pipe body I, place the pipe body I of the second section of the prefabricated heat preservation pipe groove, and push the pipe body I of the second section of the prefabricated heat preservation pipe groove to make it slide Enter the steel connecting sleeve I and fix it with bolts. The steel connecting sleeve I and the steel connecting sleeve II are fixed with arc-shaped steel sheets. Repeat the above steps until the splicing of all the assembled insulation pipe grooves is completed.

Beneficial effects of the present invention:

1) The drain outlet of the present invention is equipped with a heating cable, which can prevent the water flow from freezing during the extremely cold winter months;

2) The concrete of the present invention adopts polypropylene fiber concrete, and polypropylene fiber can reduce the shrinkage and the micro-crack situation of concrete in the early hardening stage, reduce the drying shrinkage crack and the micro-crack caused by temperature change in the later stage of hardening, and the anti-crack of polypropylene fiber concrete Excellent resistance, suitable for resisting freeze-thaw damage in the environment of the Qinghai-Tibet Plateau;

3) The polypropylene fiber concrete layer of the present invention plays a protective role to the thermal insulation layer, so that it can avoid damage caused by permafrost melting;

4) The polypropylene fiber concrete layer of the present invention is provided with a double-layer steel wire mesh, which can resist temperature stress and increase the tensile capacity of the polypropylene fiber concrete layer, and at the same time, the concrete deformation is restrained by the steel wire mesh to strengthen its rigidity;

5) The temperature sensor and the temperature display at the outlet position of the present invention are convenient for the staff to detect the temperature of the discharged water;

6) The prefabricated prefabricated fiber concrete drainage pipe groove of the present invention is divided into upper and lower pipe bodies, which can flexibly arrange or change pipelines, and the construction is simple and time-saving.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the docking schematic diagram of the present invention;

Fig. 3 is a sectional view of the present invention;

Fig. 4 is a schematic diagram of cable arrangement of the present invention;

In the figure, 1-pipe body I, 2-pipe body II, 3-steel connecting sleeve I, 4-steel connecting sleeve II, 5-arc steel sheet, 6-bolt, 7-polyurethane insulation layer I, 8 -Heating cable, 9-cable outlet, 10-steel mesh, 11-threaded casing, 12-temperature sensor, 13-temperature display, 14-side pipe groove, 15-middle pipe groove, 16-polypropylene fiber concrete Layer I, 17-polypropylene fiber concrete layer II, 18-polyurethane insulation layer II.

Detailed ways

The present invention will be described in detail below in combination with specific embodiments.

The invention can resist freeze-thaw damage, solve the problem of icing at the drain, and at the same time reduce the damage to the insulation layer caused by the settlement of the soil layer, thereby ensuring the insulation effect of the insulation layer, so it has the characteristics of good rigidity and high insulation performance , suitable for use in cold areas, keep drainage smooth, not easy to block, reduce head loss, and prevent water from freezing.

As shown in Figures 1 and 2, the present invention includes two side pipe grooves 14 and several middle pipe grooves 15;

Both the side pipe groove 14 and the middle pipe groove 15 are composed of a pipe body I1 and a pipe body II 2, both of which are in a semicircular shape; the connecting position of the pipe body I1 and the pipe body II 2 is in a staggered shape; Its function is to form a mortise and tenon structure and bite each other.

As shown in Figure 3, the pipe body I1 includes a polypropylene fiber concrete layer I16 and a polyurethane insulation layer I7, and the pipe body II2 includes a polypropylene fiber concrete layer II 17 and a polyurethane insulation layer II 18;

The polypropylene fiber content of polypropylene fiber concrete layer I16 and polypropylene fiber concrete layer II 17 is 0.15%-0.5%; polypropylene fiber is a high-performance fiber specially used for concrete. After adding fiber to concrete, the fiber can easily Rapidly and evenly dispersed in concrete to form a chaotic support system, which disperses the directional stress of concrete, prevents the occurrence and development of primary cracks in concrete, eliminates or reduces the number and size of primary micro-cracks, and can effectively control the plastic shrinkage of concrete, Microcracks caused by factors such as drying shrinkage and temperature changes can prevent and inhibit the formation and development of concrete primary cracks, greatly improve the anti-cracking and impermeability performance of concrete, anti-abrasion performance, increase the toughness of concrete, and thus increase the service life of concrete.

The polypropylene fiber concrete layer can protect the polyurethane insulation layer from damage caused by permafrost melting; at the same time, there are two layers of steel wire mesh 10 inside the polypropylene fiber concrete layer I16 and polypropylene fiber concrete layer II 17 , can resist temperature stress, can increase the tensile capacity of the polypropylene fiber concrete layer, and at the same time, due to the constraint of the steel wire mesh, the concrete deformation can be strengthened, and its rigidity can be strengthened;

A threaded sleeve 11 is pre-embedded in the polypropylene fiber concrete layer I16 and polypropylene fiber concrete layer II17 at the splicing ends of the side pipe groove 14 and the middle pipe groove 15; On both sides of I, a threaded sleeve is pre-embedded at the joint with the pipe body II, and a threaded sleeve is embedded at the joint with the pipe body I on both sides of the pipe body II. A total of 5 threaded sleeves are pre-embedded at the end, which are used in conjunction with bolt 6;

The splicing position of the side pipe groove 14 and the middle pipe groove 15 is provided with a semicircular steel connecting sleeve I 3 and a steel connecting sleeve II 4, and the steel connecting sleeve I 3 and the steel connecting sleeve II 4 are connected to the pipe body respectively. I1 and pipe body II 2 are fixedly connected by threaded sleeve 11 and bolt 6;

An arc-shaped steel sheet 5 is arranged at the splicing position of the steel connecting sleeve I 3 and the steel connecting sleeve II 4, and the arc-shaped steel sheet 5 and the steel connecting sleeve I 3 and the steel connecting sleeve II 4 pass through the threaded sleeve 11 and the bolt 6 fixed connections.

As shown in Figure 4, the pipe body II 2 of the side pipe groove 14 is provided with an S-type heating cable 8 along the inner side of the polyurethane insulation layer II 18, and the pipe body II 2 is provided with a cable outlet 9, which can be used in the extremely cold months of winter. The water flow is prevented from freezing through active heating; a temperature sensor 12 is provided on the inner surface of the pipe body II 2 of the side pipe groove 14, and the temperature sensor 12 is connected with a temperature display 13, which is convenient for the staff to detect the temperature of the discharged water.

A construction method for an assembled thermal insulation pipe groove, comprising the following steps:

Step 1: According to the length and position relationship of the assembled thermal insulation pipe grooves of two adjacent sections, first place the steel connecting sleeve II4 in the dug trench to ensure that when placing the assembled thermal insulation pipe grooves of two adjacent sections, The seam of the two is at the center line of the steel connecting sleeve II 4;

Step 2: according to the positions of the holes on the threaded sleeve 11 and the steel connecting sleeve II 4 and the centerline position of the steel connecting sleeve II 4, successively place the pipe bodies II 2 of the adjacent pipe grooves, and then place the drain pipe;

Step 3: According to the staggered positional relationship between the pipe body II 2 and the end of the pipe body I1, place the pipe body I1 of the first section of the assembled thermal insulation pipe groove;

Step 4: according to the position of the threaded sleeve 11, place the steel connecting sleeve I3 on the pipe body I1 of the first pipe groove;

Step 5: Connect and fix the pipe body I1 and pipe body II 2 of the first assembled thermal insulation pipe groove with the steel connection sleeve I 3 and the steel connection sleeve II 4 with bolts 6, and the steel connection sleeve I 3 and the steel connection sleeve The arc-shaped steel sheet 5 is used to tie and fix between the connecting sleeves II and 4;

Step 6. According to the staggered positional relationship between the pipe body II 2 and the end of the pipe body I1, place the pipe body I1 of the second section of the prefabricated heat preservation pipe groove, and push the pipe body I1 of the second section of the prefabricated heat preservation pipe groove to make it Slide into the steel connecting sleeve I 3 and fix it with bolt 6. The steel connecting sleeve I 3 and the steel connecting sleeve II 4 are fixed with an arc-shaped steel sheet 5. Repeat the above steps until all assembly methods are completed. Splicing of insulation pipe grooves.

In the description of the present invention, unless otherwise clearly stipulated and limited, the terms "setting", "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection, or It is a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The content of the present invention is not limited to the examples listed, and any equivalent transformations to the technical solution of the present invention adopted by persons of ordinary skill in the art by reading the description of the present invention are covered by the claims of the present invention.

Claims (8)

1. An assembled thermal insulation pipe groove is characterized in that: it comprises two side pipe grooves (14) and several middle pipe grooves (15); Described side pipe groove (14) and middle pipe groove (15) are all made up of pipe body I (1) and pipe body II (2), and pipe body I (1) and pipe body II (2) are semicircular; Described pipe body I (1) comprises polypropylene fiber concrete layer I (16) and polyurethane thermal insulation layer I (7), and described pipe body II (2) comprises polypropylene fiber concrete layer II (17) and polyurethane thermal insulation layer II ( 18); The splicing position of the side pipe groove (14) and the middle pipe groove (15) is provided with a semicircular steel connecting sleeve I (3) and a steel connecting sleeve II (4), and the steel connecting sleeve I (3) and the steel connecting sleeve II (4) are respectively fixedly connected with the pipe body I (1) and the pipe body II (2) through threads; the steel connecting sleeve I (3) and the steel connecting sleeve II ( 4) An arc-shaped steel sheet (5) is arranged at the splicing position, and the arc-shaped steel sheet (5) is fixedly connected with the steel connecting sleeve I (3) and the steel connecting sleeve II (4) through threads. 2. An assembled thermal insulation pipe groove according to claim 1, characterized in that: the connecting position of the pipe body I (1) and the pipe body II (2) is in a staggered shape. 3. An assembled thermal insulation pipe groove according to claim 2, characterized in that: the pipe body II (2) of the side pipe groove (14) is provided with a heating cable along the inner side of the polyurethane insulation layer II (18) (8), the heating cable (8) is arranged in an S-shaped curve, and the pipe body II (2) is provided with a cable outlet (9). 4. A kind of assembled heat preservation pipe groove according to claim 3, characterized in that: the inner surface of the pipe body II (2) of the side pipe groove (14) is provided with a temperature sensor (12), and the temperature sensor (12) is connected with temperature indicator (13). 5. A prefabricated thermal insulation pipe groove according to claim 4, characterized in that: the polypropylene fiber content of the polypropylene fiber concrete layer I (16) and polypropylene fiber concrete layer II (17) is 0.15% -0.5%. 6. A kind of prefabricated thermal insulation pipe groove according to claim 5, characterized in that: said polypropylene fiber concrete layer I (16) and polypropylene fiber concrete layer II (17) are provided with two layers of steel mesh 10). 7. A kind of assembled heat preservation pipe groove according to claim 6, characterized in that: the polypropylene fiber concrete layer I (16) and polypropylene fiber concrete layer I (16) at the splicing ends of the side pipe groove (14) and the middle pipe groove (15) A threaded casing (11) is pre-embedded in the fiber concrete layer II (17). 8. A construction method for an assembled thermal insulation pipe groove, characterized in that: comprising the following steps: Step 1: According to the length and position relationship of the assembled thermal insulation pipe grooves of two adjacent sections, first place the steel connecting sleeve II (4) in the dug trench to ensure that the assembled thermal insulation pipes of two adjacent sections are placed When the slot is used, the joint between the two is at the center line of the steel connecting sleeve II(4); Step 2: According to the positions of the holes on the threaded sleeve (11) and the steel connecting sleeve II (4) and the centerline position of the steel connecting sleeve II (4), successively place the pipe bodies II (2) of the adjacent pipe grooves , and then place the drainpipe; Step 3: According to the staggered positional relationship between the pipe body II(2) and the end of the pipe body I(1), place the pipe body I(1) of the first section of the assembled thermal insulation pipe groove; Step 4: According to the position of the threaded sleeve (11), place the steel connection sleeve I (3) on the pipe body I (1) of the first pipe groove; Step 5: Connect the pipe body I (1) and pipe body II (2) of the first section of the assembled thermal insulation pipe groove to the steel connection sleeve I (3) and the steel connection sleeve II (4) respectively with bolts (6) The connection is fixed, and the steel connection sleeve I (3) and the steel connection sleeve II (4) are fixed with an arc-shaped steel sheet (5) by tie; Step 6: According to the staggered positional relationship between the pipe body II (2) and the end of the pipe body I (1), place the pipe body I (1) of the second section of the prefabricated heat preservation pipe groove, and push the second section of the prefabricated heat preservation pipe grooved pipe body I(1), slide it into the steel connecting sleeve I(3) and fix it with bolts(6). Between the steel connecting sleeve I(3) and the steel connecting sleeve II(4) Use arc-shaped steel sheets (5) to tie and fix them in between, and repeat the above steps until the splicing of all assembled heat preservation pipe grooves is completed.

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