An assembled thermal insulation pipe trough and its construction method

Abstract

The present invention discloses an assembled thermal insulation pipe trough and its construction method. Due to insufficient thermal insulation performance of the drain pipe, the pipe orifice freezes, resulting in poor drainage of the drain pipe. The present invention includes two side pipe troughs and several middle pipe troughs; both the side pipe troughs and the middle pipe troughs are composed of pipe body I and pipe body II, and pipe body I and pipe body II are in a semi-circular shape; pipe body I and II include a polypropylene fiber concrete layer and a polyurethane thermal insulation layer; semi-circular steel connection sleeves I and II are provided at the splicing positions of the side pipe troughs and the middle pipe troughs, and an arc-shaped steel sheet is provided at the splicing position of steel connection sleeves I and II; a heating cable is provided inside the side pipe trough. The present invention can prevent the water flow from freezing by active heating; the polypropylene fiber concrete layer plays a protective role for the thermal insulation layer, preventing it from being damaged due to the thawing of frozen soil, and the polypropylene fiber can reduce the shrinkage and micro-cracks of the concrete in the early hardening stage.

Description

Technical Field

[0001] The present invention belongs to the technical field of drainage pipe insulation, and particularly relates to an assembled insulation pipe trough and a construction method thereof. Background Art

[0002] Drainage pipes are mainly responsible for tasks such as draining rainwater, sewage, and farmland irrigation, and are divided into plastic drainage pipes, concrete pipes, and reinforced concrete pipes. However, in the Qinghai-Tibet Plateau region, drainage pipes often freeze due to insufficient insulation performance, especially at the pipe orifices, resulting in poor drainage of the drainage pipes, refreezing, and thus a vicious cycle, inducing various frost damages. In addition, due to the thawing of frozen soil, the uneven settlement of the soil around the drainage pipes will cause the insulation layer to be pulled and damaged. Summary of the Invention

[0003] In order to make up for the deficiencies of the prior art, the present invention provides an assembled insulation pipe trough and a construction method thereof, which can resist freeze-thaw damage, solve the problem of ice formation at the drainage outlet, and at the same time can reduce the damage to the insulation layer caused by soil settlement, thereby ensuring the insulation effect of the insulation layer.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] An assembled insulation pipe trough, characterized in that: it includes two side pipe troughs and several middle pipe troughs;

[0006] Both the side pipe troughs and the middle pipe troughs are composed of pipe body I and pipe body II, and pipe body I and pipe body II are semicircular; pipe body I includes a polypropylene fiber concrete layer I and a polyurethane insulation layer I, and pipe body II includes a polypropylene fiber concrete layer II and a polyurethane insulation layer II;

[0007] At the splicing positions of the side pipe troughs and the middle pipe troughs, semicircular steel connecting sleeves I and II are provided, and the steel connecting sleeves I and II are respectively fixedly connected to pipe body I and pipe body II by a threaded manner; at the splicing position of the steel connecting sleeves I and II, an arc-shaped steel sheet is provided, and the arc-shaped steel sheet and the steel connecting sleeves I and II are fixedly connected by a threaded manner.

[0008] Further, the connection position between pipe body I and pipe body II is in a staggered shape;

[0009] Further, along the inner side of the polyurethane insulation layer II of the pipe body II of the side pipe trough, a heating cable is provided, and the heating cable is arranged in an S-shaped curve, and a cable outlet is provided on the pipe body II;

[0010] Further, a temperature sensor is provided on the inner surface of the pipe body II of the side pipe trough, and the temperature sensor is connected to a temperature display;

[0011] Further, the amount of polypropylene fiber in the polypropylene fiber concrete layer I and the polypropylene fiber concrete layer II is 0.15%-0.5%;

[0012] Furthermore, two layers of steel mesh are provided in the polypropylene fiber concrete layer I and the polypropylene fiber concrete layer II;

[0013] Furthermore, threaded sleeves are pre-buried in the polypropylene fiber concrete layer I and the polypropylene fiber concrete layer II at the splicing ends of the side pipe groove and the middle pipe groove;

[0014] A construction method for an assembled thermal insulation pipe trough comprises the following steps:

[0015] Step 1: According to the length and position relationship of two adjacent sections of assembled insulation pipe grooves, first place the steel connecting sleeve II in the dug groove to ensure that when placing two adjacent sections of assembled insulation pipe grooves, the joint between the two is at the center line of the steel connecting sleeve II;

[0016] 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, the pipe bodies II of the adjacent pipe grooves are placed in sequence, and then the drainage pipe is placed;

[0017] Step 3: According to the staggered positional relationship between the ends of the pipe body II and the pipe body I, place the pipe body I of the first section of the assembled thermal insulation pipe trough;

[0018] 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;

[0019] Step 5: The pipe body I and the pipe body II of the first section of the assembled insulation pipe groove are respectively connected and fixed to the steel connecting sleeve I and the steel connecting sleeve II with bolts, and the steel connecting sleeve I and the steel connecting sleeve II are tied and fixed with an arc steel sheet;

[0020] Step six, according to the staggered positional relationship between the ends of pipe body II and pipe body I, place the pipe body I of the second section of the prefabricated insulated pipe trough, push the pipe body I of the second section of the prefabricated insulated pipe trough to make it slide into the steel connecting sleeve I, and fix it with bolts. The steel connecting sleeve I and the steel connecting sleeve II are tied and fixed with arc-shaped steel sheets. Repeat the above steps until all the prefabricated insulated pipe troughs are spliced.

[0021] Beneficial effects of the present invention:

[0022] 1) A heating cable is provided at the drain outlet of the present invention, which can prevent the water from freezing by actively heating in the extremely cold months of winter;

[0023] 2) The concrete of the present invention uses polypropylene fiber concrete. Polypropylene fibers can reduce shrinkage and microcracks in the early hardening stage of concrete, reduce dry shrinkage cracks in the later hardening stage and microcracks caused by temperature changes. The crack resistance of polypropylene fiber concrete is excellent and is suitable for resisting freeze-thaw damage in the Qinghai-Tibet Plateau environment;

[0024] 3) The polypropylene fiber concrete layer of the present invention plays a protective role for the insulation layer, preventing it from being damaged due to the melting of frozen soil;

[0025] 4) The polypropylene fiber concrete layer of the present invention is provided with a double-layer steel wire mesh, which can resist temperature stress, increase the tensile capacity of the polypropylene fiber concrete layer. At the same time, due to the restraint of the steel wire mesh on the concrete deformation, its stiffness is enhanced;

[0026] 5) The temperature sensor and temperature display at the drainage outlet of the present invention facilitate the staff to detect the temperature of the discharged water;

[0027] 6) The prefabricated precast fiber concrete drain pipe groove of the present invention is divided into upper and lower pipe bodies, which can flexibly arrange or change pipelines, with simple construction and time saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 is a docking schematic diagram of the present invention;

[0030] Figure 3 is a sectional view of the present invention;

[0031] Figure 4 is a schematic diagram of the cable layout of the present invention;

[0032] In the figure, 1 - Pipe body I, 2 - Pipe body II, 3 - Steel connection sleeve I, 4 - Steel connection sleeve II, 5 - Arc steel sheet, 6 - Bolt, 7 - Polyurethane insulation layer I, 8 - Heating cable, 9 - Cable outlet, 10 - Steel wire mesh, 11 - Threaded sleeve, 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 DESCRIPTION OF THE INVENTION

[0033] The present invention will be described in detail below in conjunction with the specific embodiments.

[0034] The present invention can resist freeze-thaw damage, solve the problem of ice formation at the drainage outlet, and also reduce the damage to the insulation layer caused by soil settlement, thereby ensuring the insulation effect of the insulation layer. Therefore, it has the characteristics of good stiffness and high insulation performance, and is suitable for use in cold regions, keeping the drainage smooth, not easily blocked, reducing the head loss, and preventing the water flow from freezing.

[0035] As Figure 1 , 2 shown, the present invention includes two side pipe grooves 14 and several middle pipe grooves 15;

[0036] Both the side pipe groove 14 and the middle pipe groove 15 are composed of a pipe body I 1 and a pipe body II 2, and both the pipe body I 1 and the pipe body II 2 are semi-circular; the connection position between the pipe body I 1 and the pipe body II 2 is in a staggered shape; its function is to form a tenon and mortise structure and bite each other.

[0037] As Figure 3 shown, the pipe body I 1 includes a polypropylene fiber concrete layer I 16 and a polyurethane insulation layer I 7, and the pipe body II 2 includes a polypropylene fiber concrete layer II 17 and a polyurethane insulation layer II 18;

[0038] The polypropylene fiber content in the polypropylene fiber concrete layer I 16 and the polypropylene fiber concrete layer II 17 is 0.15%-0.5%; polypropylene fiber is a high-performance fiber dedicated to concrete. After adding fiber to the concrete, the fiber can easily and quickly disperse evenly in the concrete to form a random support system, dispersing the directional stress of the concrete, preventing the occurrence and development of primary cracks in the concrete, eliminating or reducing the number and scale of primary micro-cracks, effectively controlling the micro-cracks caused by factors such as plastic shrinkage, dry shrinkage, and temperature change of the concrete, preventing and inhibiting the formation and development of primary cracks in the concrete, greatly improving the crack resistance and impermeability performance, abrasion resistance performance of the concrete, increasing the toughness of the concrete, and thus improving the service life of the concrete.

[0039] The polypropylene fiber concrete layer can protect the polyurethane insulation layer from damage caused by the melting of frozen soil; at the same time, two layers of steel wire meshes 10 are provided in the polypropylene fiber concrete layer I 16 and the polypropylene fiber concrete layer II 17, which can resist temperature stress, increase the tensile capacity of the polypropylene fiber concrete layer, and at the same time, due to the restraint of the steel wire mesh on the concrete deformation, the stiffness is strengthened;

[0040] Threaded sleeves 11 are embedded in the polypropylene fiber concrete layer I 16 and the polypropylene fiber concrete layer II 17 at the splicing ends of the side pipe groove 14 and the middle pipe groove 15; one threaded sleeve 11 is embedded at the top of the pipe body I, and one threaded sleeve is embedded on each side of the pipe body I, adjacent to the joint with the pipe body II, and one threaded sleeve is embedded on each side of the pipe body II, adjacent to the joint with the pipe body I. A total of 5 threaded sleeves are embedded at the ends of the assembled insulation pipe groove for use in conjunction with the bolts 6;

[0041] At the splicing position of the side pipe groove 14 and the middle pipe groove 15, semi-circular steel connecting sleeves I 3 and steel connecting sleeves II 4 are provided. The steel connecting sleeves I 3 and the steel connecting sleeves II 4 are fixedly connected to the pipe body I 1 and the pipe body II 2 respectively through the threaded sleeves 11 and the bolts 6;

[0042] An arc-shaped steel sheet 5 is provided at the splicing position of the steel connecting sleeve I 3 and the steel connecting sleeve II 4. The arc-shaped steel sheet 5 and the steel connecting sleeve I 3 and the steel connecting sleeve II 4 are fixedly connected through the threaded sleeves 11 and the bolts 6.

[0043] As Figure 4 shown, along the inner side of the polyurethane insulation layer II 18 of the pipe body II 2 of the side pipe groove 14, an S-shaped tracing cable 8 is provided. A cable outlet 9 is provided on the pipe body II 2. In the extremely cold months of winter, active heating can be used to prevent the water flow from freezing; a temperature sensor 12 is provided on the inner surface of the pipe body II 2 of the side pipe groove 14. The temperature sensor 12 is connected to a temperature display 13, which is convenient for the staff to detect the temperature of the discharged water.

[0044] A construction method for an assembled insulation pipe groove includes the following steps:

[0045] Step 1: According to the length and positional relationship of two adjacent sections of the assembled insulation pipe groove, first place the steel connecting sleeve II 4 in the dug trench, ensuring that when placing two adjacent sections of the assembled insulation pipe groove, the joint between them is at the midline of the steel connecting sleeve II 4;

[0046] Step 2: According to the positions of the holes on the threaded sleeve 11 and the steel connecting sleeve II 4 and the midline position of the steel connecting sleeve II 4, place the pipe body II 2 of each adjacent pipe groove in sequence, and then place the drain pipe;

[0047] Step 3: According to the staggered position relationship between the ends of the pipe body II 2 and the pipe body I 1, place the pipe body I 1 of the first section of the assembled insulation pipe groove;

[0048] Step 4: According to the position of the threaded sleeve 11, place the steel connecting sleeve I 3 on the pipe body I 1 of the first section of the pipe groove;

[0049] Step Five: Connect and fix the pipe body I1 and the pipe body II 2 of the first-section assembled thermal insulation pipe groove to the steel connecting sleeve I 3 and the steel connecting sleeve II 4 respectively with bolts 6, and fix them with an arc-shaped steel sheet 5 between the steel connecting sleeve I 3 and the steel connecting sleeve II 4;

[0050] Step Six: According to the staggered position relationship between the end of the pipe body II 2 and the pipe body I1, place the pipe body I1 of the second-section assembled thermal insulation pipe groove, push the pipe body I1 of the second-section prefabricated thermal insulation pipe groove to make it slide into the steel connecting sleeve I 3, and fix it with bolts 6. Fix them with an arc-shaped steel sheet 5 between the steel connecting sleeve I 3 and the steel connecting sleeve II 4. Repeat the above steps until the splicing of all the assembled thermal insulation pipe grooves is completed.

[0051] In the description of the present invention, unless otherwise clearly specified and defined, the terms "set", "install", "connect", "link", "fix" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The content of the present invention is not limited to the examples listed. Any equivalent transformation of the technical solution of the present invention by those of ordinary skill in the art by reading the specification of the present invention shall be covered by the claims of the present invention.

Claims

1. An assembled thermal insulation pipe trough, characterized in that: It includes two side tube grooves (14) and a plurality of middle tube grooves (15); The side pipe groove (14) and the middle pipe groove (15) are both composed of a pipe body I (1) and a pipe body II (2), and the pipe body I (1) and the pipe body II (2) are semicircular; the pipe body I (1) includes a polypropylene fiber concrete layer I (16) and a polyurethane thermal insulation layer I (7), and the pipe body II (2) includes a polypropylene fiber concrete layer II (17) and a polyurethane thermal insulation layer II (18); A semicircular steel connecting sleeve I (3) and a steel connecting sleeve II (4) are provided at the joint position of the side pipe groove (14) and the middle pipe groove (15), and the steel connecting sleeve I (3) and the steel connecting sleeve II (4) are respectively fixedly connected to the pipe body I (1) and the pipe body II (2) by means of threads; an arc-shaped steel sheet (5) is provided at the joint 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) are fixedly connected by means of threads; The connection position between the tube body I (1) and the tube body II (2) is in a staggered shape; A heating cable (8) is provided along the inner side of the polyurethane insulation layer II (18) of the pipe body II (2) of the side pipe groove (14), the heating cable (8) is arranged in an S-shaped curve, and a cable outlet (9) is provided on the pipe body II (2); A threaded sleeve (11) is pre-buried in the polypropylene fiber concrete layer I (16) and the polypropylene fiber concrete layer II (17) at the splicing ends of the side pipe groove (14) and the middle pipe groove (15).

2. The prefabricated thermal insulation pipe chute according to claim 1, characterized in that: A temperature sensor (12) is provided on the inner surface of the tube body II (2) of the side tube groove (14), and the temperature sensor (12) is connected to a temperature display (13).

3. The prefabricated thermal insulation pipe trough according to claim 2, characterized in that: The amount of polypropylene fiber in the polypropylene fiber concrete layer I (16) and the polypropylene fiber concrete layer II (17) is 0.15%-0.5%.

4. The prefabricated thermal insulation pipe chute according to claim 3, wherein: Two layers of steel wire mesh (10) are provided in the polypropylene fiber concrete layer I (16) and the polypropylene fiber concrete layer II (17).

5. The construction method of the assembled thermal insulation pipe trough according to any one of claims 1-4, characterized in that: The following steps are involved: Step 1: Based on the length and position relationship between two adjacent sections of assembled insulation pipe grooves, first place the steel connecting sleeve II (4) in the excavated groove, ensuring that when placing the two adjacent sections of assembled insulation pipe grooves, 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), the pipe bodies II (2) of the adjacent pipe grooves are placed in sequence, and then the drainage pipe is placed; Step 3: placing the pipe body I (1) of the first section of the assembled thermal insulation pipe trough according to the staggered positional relationship between the ends of the pipe body II (2) and the pipe body I (1); Step 4: According to the position of the threaded sleeve (11), place the steel connecting sleeve I (3) on the pipe body I (1) of the first pipe groove; Step Five: Connect and fix the pipe body I (1) and pipe body II (2) of the first - section assembled thermal - insulation pipe trough to the steel connecting sleeve I (3) and steel connecting sleeve II (4) respectively with bolts (6), and use an arc - shaped steel sheet (5) to connect and fix between the steel connecting sleeve I (3) and the steel connecting sleeve II (4); Step Six: According to the staggered position relationship at the ends of the pipe body II (2) and the pipe body I (1), place the pipe body I (1) of the second - section assembled thermal - insulation pipe trough, push the pipe body I (1) of the second - section prefabricated thermal - insulation pipe trough to make it slide into the steel connecting sleeve I (3), and use bolts (6) for fixation. Use an arc - shaped steel sheet (5) to connect and fix between the steel connecting sleeve I (3) and the steel connecting sleeve II (4). Repeat the above steps until the splicing of all the assembled thermal - insulation pipe troughs is completed.

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