Directly buried polyurethane heat-insulating pipe

Abstract

The application discloses a direct-buried polyurethane heat preservation pipe and relates to the technical field of polyurethane heat preservation pipes.The heat preservation pipe is composed of a steel pipe and a polyurethane heat preservation layer covering the outer wall of the steel pipe.A plurality of bases are arranged below the heat preservation pipe, and a moving support is arranged on the inner side of each base.A positioning unit is fixedly connected to the outer surface of the heat preservation pipe above the moving support.The positioning unit is connected to the heat preservation pipe.When the ports of two heat preservation pipes are connected, the positioning unit and the heat preservation pipe can move synchronously with the moving support.The application can drive the ports of the heat preservation pipes to be quickly connected, reduce the connection deviation, guarantee the stability of the welding opening, reduce the time required for manually pushing the heat preservation pipes, and save human resources.In addition, the gas cylinder can be put in and taken out, which can facilitate the on-site operation of the staff, improve the work efficiency, and save resources in the process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polyurethane thermal insulation pipe, in particular to a direct-buried polyurethane thermal insulation pipe. BACKGROUND

[0002] The polyurethane thermal insulation pipe is made of high-function polyether polyol combination and multiple methyl polyphenyl polyisocyanate as raw materials through chemical reaction foaming, and is used for the thermal insulation and cooling engineering of various pipelines indoors and outdoors, central heating pipelines, central air conditioning pipelines, chemical industry pipelines, pharmaceutical industry pipelines and the like. The main components of the polyurethane thermal insulation pipe include: a protective shell made of high-density polyethylene or glass fiber reinforced plastic; a thermal insulation layer made of rigid polyurethane foam plastic; and a working steel pipe made of a seamed steel pipe, a seamless steel pipe or a double-buried arc spiral welded steel pipe according to the technical requirements of the conveying medium.

[0003] In the process of direct-buried laying of the existing polyurethane thermal insulation pipe, butt joint work needs to be performed on the pipe according to the actual laying requirements, a binding belt needs to be used to tightly bind the hot-melt sleeve on the pipe port, and then the power supply is connected to start welding. The welding time needs to be preset, and the welding is stopped after the power supply is automatically turned off. The quality of the welding opening is detected to ensure that the pipe connection forms a pipe system. However, in the process of butt joint of the pipe port, the pipe is usually moved by manual pushing or hoisting. In this process, the port of the pipe is prone to a certain degree of error in the butt joint process, which can affect the quality of the welding opening. In addition, in the process of welding of multiple pipes in succession, the pipe needs to be repeatedly moved manually, or the hoisting equipment needs to be disassembled and assembled, which affects the work efficiency. SUMMARY

[0004] The present application aims to provide a direct-buried polyurethane thermal insulation pipe.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a direct-buried polyurethane thermal insulation pipe, comprising a thermal insulation pipe, wherein the thermal insulation pipe is composed of a steel pipe with a polyurethane thermal insulation layer on the outer wall of the steel pipe, a plurality of bases are arranged below the thermal insulation pipe, a moving support is arranged on the inner side of the base, a positioning unit is fixedly connected to the outer surface of the thermal insulation pipe above the moving support, and the positioning unit is connected to the thermal insulation pipe. When the ports of two thermal insulation pipes are butted, the positioning unit and the thermal insulation pipe can move synchronously with the moving support.

[0006] The detachable air cylinders are arranged on both sides of the heat preservation pipes, the output rods of the air cylinders are provided with butt blocks, the positioning units are fixedly connected with the butt blocks, and the butt blocks are matched with the butt blocks.

[0007] Further, the positioning units comprise first supporting plates which are attached to the outer walls of the heat preservation pipes, the two ends of the first supporting plates extend above the bases and are fixedly connected with positioning tables, and the butt blocks are fixed to one side of the positioning tables.

[0008] Further, the positioning units further comprise stirrups which are arranged on the outer walls of the heat preservation pipes, the second supporting plates are arranged on the stirrups, the stirrups are arranged on the outer walls of the heat preservation pipes, and the two supporting legs of the stirrups extend downward to form threaded portions which penetrate the positioning tables.

[0009] Further, the bases are detachably connected with sliding seats below the positioning tables, and the bases are detachably connected with extension tables on both sides.

[0010] Both sides of the base are detachably connected with limiting frames, a plurality of guide balls which can roll along the moving direction of the sliding seat are arranged on the limiting frames, and arc-shaped grooves which can accommodate the guide balls to pass through are arranged on the side surface of the sliding seat.

[0011] Further, both sides of the base are detachably connected with supporting seats, the bottom of the stop plate is fixedly connected with a driving rod, the supporting seat is provided with an opening which can accommodate the movement of the driving rod, and the outer side of the air cylinder is detachably connected with a limiting frame.

[0012] The bottom of the supporting seat is provided with a spiral conveying rod, the driving rod is provided with a threaded hole which can accommodate the penetration of the spiral conveying rod, a pair of hangers are arranged on the outer surface of the spiral conveying rod and close to both ends, the supporting legs above the hangers are arranged on the lower surface of the supporting seat, and the end of the spiral conveying rod is fixedly connected with a handle.

[0013] Further, the bottom of the moving support is provided with a plurality of rollers, and a pair of rails which are matched with the types of the rollers are detachably connected to the inner side wall of the base.

[0014] Further, the inner side wall of the base is detachably connected with an intercepting plate, the intercepting plate is located directly above the track, and the bottom of the intercepting plate extends downward to form a pair of anti-disengagement blocks, the anti-disengagement blocks are embedded in the inner side space of the track, when the two end portions of the heat preservation pipe are connected, the heat preservation pipe in a stable state is close to the intercepting plate at one end of the track, and the roller close to the end is abutted against the anti-disengagement block.

[0015] In summary, the technical effects and advantages of the present application are:

[0016] 1、The present application can drive the port of the heat preservation pipe to be quickly connected, reduce the connection deviation, ensure the stability of the welding opening, reduce the time required for manually pushing the heat preservation pipe, and save human resources.

[0017] 2、The present application is provided with a cylinder which can be inserted and taken out, so that the staff can operate on site, and after the operation is completed, the cylinder can be quickly taken out, having the advantage of portable operation, implementing the pipe connection work at the next position, improving the work efficiency, and the cylinder can be repeatedly used in the process, saving resources.

[0018] 3、The present application is provided with an intercepting plate and an anti-disengagement block, in the process of moving and connecting the heat preservation pipe, the heat preservation pipe in a stable state is close to the intercepting plate at one end of the track, and the roller close to the end is abutted against the anti-disengagement block. Limit the stroke of the roller, keep the stability of the end portion of the heat preservation pipe during the connection, avoid the heat preservation pipe in a stable state from being impacted by the heat preservation pipe in a moving state, and generate the phenomenon of excessive slip, improve the connection efficiency, and reduce the operation deviation. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application;

[0021] Figure 2 It is a second perspective view of the present application;

[0022] Figure 3 It is a schematic diagram of the support table and the base connected with the cylinder of the present application;

[0023] Figure 4 It is a schematic diagram of the support table and the base structure of the present application not connected with the cylinder;

[0024] Figure 5 It is the schematic diagram of the positioning structure and the heat preservation pipe connected with the cylinder of the application;

[0025] Figure 6 It is the schematic diagram of the positioning structure and the heat preservation pipe connected with the cylinder of the application;

[0026] Figure 7 It is the schematic diagram of the support table and the second view angle structure of the base connected with the cylinder of the application;

[0027] Figure 8 It is the schematic diagram of the positioning structure and the heat preservation pipe connected with the cylinder of the application; Figure 7 It is the schematic diagram of the positioning structure and the heat preservation pipe connected with the cylinder of the application;

[0028] In the figure: 1, heat preservation pipe; 2, base; 21, extension table; 22, limiting frame; 23, guide ball; 24, track; 25, intercepting plate; 251, anti-dropping block; 3, moving support; 31, sliding seat; 32, first supporting plate; 33, positioning table; 331, alignment sleeve; 34, stirrup; 341, threaded part; 35, second supporting plate; 36, roller; 4, cylinder; 41, butt joint block; 42, limiting frame; 5, stop plate; 51, driving rod; 6, support seat; 7, spiral conveying rod; 8, hanging bracket; 9, handle. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0030] Embodiment 1: refer to a direct-buried polyurethane heat preservation pipe shown in Figure 1 , Figure 2 The lower side of the heat preservation pipe 1 is provided with a plurality of bases 2, the inner side of the base 2 is provided with a moving support 3, the upper side of the moving support 3 is fixedly connected with a positioning unit along the outer surface of the heat preservation pipe 1, the positioning unit is connected with the heat preservation pipe 1, when the ports of two heat preservation pipes 1 are connected, the positioning unit and the heat preservation pipe 1 can move synchronously with the moving support 3, so as to drive the heat preservation pipe 1 to move, at this time, the other heat preservation pipe 1 is in a stable state.

[0031] The detachable air cylinder 4 is arranged on both sides of the heat preservation pipe 1, the output rod of the air cylinder 4 is provided with a butt joint block 41, the positioning unit is fixedly connected with an alignment sleeve 331 which is matched with the butt joint block 41, and in the butt joint process of the heat preservation pipe 1, only one of the heat preservation pipes 1 needs to be controlled to move, and the other heat preservation pipe 1 remains stable. The air cylinder 4 can be arranged on both sides of the heat preservation pipe 1, when the butt joint block 41 is connected with the alignment sleeve 331, one side of the air cylinder 4 is provided with a stop plate 5 which can adjust the relative distance with the air cylinder 4 to accommodate the air cylinder 4 to be put in or taken out.

[0032] The air cylinder 4 drives the alignment sleeve 331, the positioning unit, the moving support 3 and the heat preservation pipe 1 to move, can drive the ports of the heat preservation pipe 1 to be quickly connected, reduce the connection deviation, so that the work binding belt tightly binds the heat melting sleeve on the port of the heat preservation pipe 1, and then the power supply is turned on to start welding, the welding time needs to be preset, and the welding is stopped after the power is automatically turned off, and the binding belt is removed after the connection position of the two heat preservation pipes 1 is completely cooled, so as to ensure the stability of the welding joint and reduce the time required for manually pushing the heat preservation pipe 1 and save manpower resources.

[0033] The air cylinder 4 can be put in or taken out, which can facilitate the on-site operation of the staff, and after the operation is completed, the air cylinder 4 can be quickly taken out, has the advantages of portable operation, implements the pipe butt joint work of the next position, improves the work efficiency, and in the process, the air cylinder 4 can be repeatedly used to save resources, so as to implement the direct-buried operation of the entire pipeline system.

[0034] As shown in Figure 5 , Figure 6 , the positioning unit comprises a first supporting plate 32 which is attached to the outer wall of the heat preservation pipe 1, both ends of the first supporting plate 32 extend above the base 2 and are fixedly connected with a positioning table 33, and the alignment sleeve 331 is fixed on one side of the positioning table 33. When the end butt joint operation of the two heat preservation pipes 1 is implemented, the air cylinder 4 arranged on both sides of one of the heat preservation pipes 1 can drive the butt joint block 41 and the alignment sleeve 331 to move, and the positioning table 33, the first supporting plate 32, the moving support 3 and the heat preservation pipe 1 at the position can move synchronously. Until the heat preservation pipe 1 in the moving process approaches the heat preservation pipe 1 in the stable state, the heated ports of the two heat preservation pipes 1 are connected, and an integrated pipeline structure is formed.

[0035] As shown in Figure 5 , Figure 6As shown, the positioning unit further comprises a hoop 34 located on the outer wall of the heat preservation tube 1, a second supporting plate 35 is sleeved on the center of the hoop 34, the second supporting plate 35 is attached to the outer wall of the heat preservation tube 1, a pair of supporting legs of the hoop 34 are downwardly extended to form a threaded part 341 penetrating through the positioning table 33, a nut is detachably connected on the threaded part 341, and the nut is located below the positioning table 33. During the installation of the heat preservation tube 1, the hoop 34 can be removed, and the heat preservation tube 1 is smoothly placed on the first supporting plate 32. Then, the hoop 34 is connected with the positioning table 33, and the fastening and positioning of the heat preservation tube 1 are completed.

[0036] The hoop 34 can keep the downward pressure of the second supporting plate 35, and the second supporting plate 35 and the first supporting plate 32 tightly clamp the heat preservation tube 1. When the positioning unit moves, the first supporting plate 32 and the second supporting plate 35 inside the positioning unit can synchronously move by clamping the heat preservation tube 1.

[0037] As shown in Figure 3 , Figure 4 , the lower part of the positioning table 33 is detachably connected with the sliding seat 31, the two sides of the base 2 are detachably connected with the extension table 21, and the extension table 21 is provided with a channel for accommodating the movement of the sliding seat 31. The two sides of the base 2 are detachably connected with the limiting frame 22, the limiting frame 22 is provided with a plurality of guide balls 23 which can roll along the movement direction of the sliding seat 31, and the side surface of the sliding seat 31 is provided with an arc-shaped groove for accommodating the guide balls 23 to pass through in sequence.

[0038] When the two heat preservation tubes 1 are operated in end-to-end butt joint, the cylinders 4 located on the two sides of one of the heat preservation tubes 1 can drive the butt joint block 41 and the alignment sleeve 331 to move. At this time, the sliding seat 31 slides inside the channel provided on the extension table 21. In this process, the sliding seat 31 can slide along the arrangement direction of the guide balls 23, and the arc-shaped groove provided on the surface of the sliding seat 31 abuts against the sliding of the guide balls 23. The sliding seat 31, the positioning unit and the heat preservation tube 1 can keep smoothness during movement, reduce friction resistance, and can guarantee the linearity during movement of the sliding seat 31, the positioning unit and the heat preservation tube 1.

[0039] As shown in Figure 3 , Figure 7 and Figure 8 , the two sides of the base 2 are detachably connected with the supporting seat 6, the bottom of the stop plate 5 is fixedly connected with the driving rod 51, the supporting seat 6 is provided with an opening for accommodating the movement of the driving rod 51, and the outer side of the cylinder 4 is detachably connected with the limiting frame 42. During the installation of the cylinder 4, the cylinder 4 can be placed on the supporting seat 6 synchronously with the limiting frame 42 until the butt joint block 41 is placed into the inside of the alignment sleeve 331. At this time, the limiting frame 42 can abut against the upper end surface of the supporting seat 6.

[0040] When the driving rod 51 and the stop plate 5 move to the limit position of the gap, the stop plate 5 abuts against the surface of the limiting frame 42, and the limiting frame 42 and the cylinder 4 mounted on the support base 6 are limited, the cylinder 4 is kept running, the abutting block 41 drives the abutting sleeve 331 and the positioning unit to move, so as to drive the heat preservation pipe 1 to move and abut against another heat preservation pipe 1.

[0041] The lower portion of the support base 6 is provided with a spiral conveying rod 7, the driving rod 51 is provided with a threaded hole for accommodating the spiral conveying rod 7, and a pair of hangers 8 are mounted on the outer surface of the spiral conveying rod 7 and close to both ends, the upper support of the hangers 8 is mounted on the lower surface of the support base 6, and the end of the spiral conveying rod 7 is fixedly connected with a handle 9. The handle 9 can drive the spiral conveying rod 7 to rotate, so as to control the movement of the driving rod 51 and the stop plate 5 until the stop plate 5 is connected with the limiting frame 42. The stability of the cylinder 4 and the limiting frame 42 during the process of being placed and running can be kept, and the cylinder 4 can be further prevented from being deviated and slipped due to the linear motion of the sliding seat 31, the positioning unit and the heat preservation pipe 1.

[0042] As shown in Figure 5 , Figure 7 , a plurality of rollers 36 are mounted on the bottom of the moving support 3, and a pair of tracks 24 matched with the type of the rollers 36 are detachably connected to the inner side wall of the base 2.

[0043] When the two heat preservation pipes 1 are abutted at the ends, the positioning unit located at the position of the moving heat preservation pipe 1 and the moving support 3 can be driven to move by the cylinders 4 mounted on both sides, and further, the rollers 36 located below the heat preservation pipe 1 can move on the tracks 24 below the heat preservation pipe 1, so as to keep the linear motion of the heat preservation pipe 1, the positioning unit and the moving support 3 during the movement and avoid the deviation of the heat preservation pipe 1 during the movement.

[0044] As shown in Figure 6 , Figure 7 , an intercepting plate 25 is detachably connected to the inner side wall of the base 2, the intercepting plate 25 is located directly above the track 24, and the bottom of the intercepting plate 25 extends downward to form a pair of anti-disengagement blocks 251 embedded in the inner side space of the track 24. When the two heat preservation pipes 1 are abutted at the ends, the heat preservation pipe 1 in the stable state is close to the intercepting plate 25 located at one end of the track 24, and the roller 36 close to the end abuts against the anti-disengagement block 251.

[0045] The anti-disengagement block 251 can limit the stroke of the roller 36, avoid the heat preservation pipe 1 in the stable state from being impacted by the heat preservation pipe 1 in the moving state and being deviated too much, keep the stability of the heat preservation pipe 1 during the abutment at the ends, improve the abutment efficiency and reduce the operation deviation.

[0046] It should be pointed out finally that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions described in the foregoing embodiments or make equivalent replacements to some of the technical features, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A direct-buried polyurethane thermal insulation pipe comprising a thermal insulation pipe (1) which is composed of a steel pipe whose outer wall is coated with a polyurethane thermal insulation layer, characterized in that: The lower part of the heat preservation tube (1) is provided with a plurality of bases (2), the inner side of the base (2) is provided with a moving support (3), the upper part of the moving support (3) is fixedly connected with a positioning unit along the outer surface of the heat preservation tube (1), the positioning unit is connected with the heat preservation tube (1), when the ports of two heat preservation tubes (1) are connected, the positioning unit and the heat preservation tube (1) can move synchronously with the moving support (3); Further comprising a detachable air cylinder (4), the air cylinder (4) is distributed on both sides of the heat preservation tube (1), a butt joint block (41) is installed on the output rod of the air cylinder (4), a positioning sleeve (331) which can be matched with the butt joint block (41) is fixedly connected on the positioning unit, when the butt joint block (41) is connected with the positioning sleeve (331), one side of the air cylinder (4) is provided with a stop plate (5), the relative distance between the stop plate (5) and the air cylinder (4) can be adjusted to accommodate the air cylinder (4) to be put in or taken out; The positioning unit comprises a first supporting plate (32) which is attached to the outer wall of the heat preservation tube (1), the two ends of the first supporting plate (32) extend above the base (2) and are fixedly connected with a positioning table (33), the positioning sleeve (331) is fixed on one side of the positioning table (33), when the end connection operation of two heat preservation tubes (1) is carried out, the air cylinder (4) located on both sides of one of the heat preservation tubes (1) can drive the butt joint block (41) and the positioning sleeve (331) to move, the positioning table (33), the first supporting plate (32), the moving support (3) and the heat preservation tube (1) located on the outer side of the heat preservation tube (1) can move synchronously.

2. A direct-buried polyurethane heat-preservation pipe according to claim 1, characterized in that: The positioning unit further comprises a stirrup (34) located on the outer wall of the heat preservation tube (1), a second supporting plate (35) is sleeved on the center of the stirrup (34), the second supporting plate (35) is attached to the outer wall of the heat preservation tube (1), a pair of legs of the stirrup (34) each extend downward to form a threaded portion (341) penetrating through the positioning table (33), a nut is detachably connected on the threaded portion (341), and the nut is located below the positioning table (33).

3. A direct buried polyurethane thermal insulation pipe according to claim 2, characterized in that: A sliding seat (31) is detachably connected below the positioning table (33), extension tables (21) are detachably connected on both sides of the base (2), channels are formed in the extension tables (21) to accommodate the movement of the sliding seat (31); Limiting racks (22) are detachably connected on both sides of the base (2), a plurality of guide balls (23) which can roll along the movement direction of the sliding seat (31) are installed on the limiting rack (22), arc-shaped grooves are formed in the side surface of the sliding seat (31) to accommodate the guide balls (23) to pass through successively.

4. The directly buried polyurethane thermal-insulation pipe according to claim 1, characterized in that: Both sides of the base (2) are detachably connected with support seats (6), the bottom of the stop plate (5) is fixedly connected with a driving rod (51), the support seat (6) is provided with an opening for accommodating the movement of the driving rod (51), the outer side of the cylinder (4) is detachably connected with a limiting frame (42), when the driving rod (51) and the stop plate (5) move to the limit position of the opening, the stop plate (5) abuts against the surface of the limiting frame (42); The lower side of the support seat (6) is provided with a spiral conveying rod (7), the driving rod (51) is provided with a threaded hole for accommodating the penetration of the spiral conveying rod (7), a pair of hangers (8) are installed on the outer surface of the spiral conveying rod (7) and close to both ends, the lower surface of the support seat (6) is installed on the leg of the hanger (8), and the end of the spiral conveying rod (7) is fixedly connected with a handle (9).

5. The directly buried polyurethane thermal-insulation pipe according to claim 1, characterized in that: The bottom of the moving bracket (3) is provided with a plurality of rollers (36), and the inner side wall of the base (2) is detachably connected with a pair of rails (24) matched with the type of the rollers (36).

6. A direct buried polyurethane thermal insulation pipe according to claim 5, characterized in that: The inner side wall of the base (2) is detachably connected with an intercepting plate (25), the intercepting plate (25) is located directly above the rail (24), and the bottom of the intercepting plate (25) extends downward to form a pair of anti-dropping blocks (251), the anti-dropping blocks (251) are embedded in the inner side space of the rail (24), when the two heat preservation pipes (1) are in the end-to-end operation, the heat preservation pipe (1) in a stable state is close to the intercepting plate (25) located at one end of the rail (24), and the roller (36) close to the end abuts against the anti-dropping block (251).

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