A prefabricated direct-buried heat-insulating pipe leak detection alarm device

Abstract

The application discloses a prefabricated direct-buried heat preservation pipe leak detection alarm device in the technical field of prefabricated direct-buried heat preservation pipes, which comprises a first support base and a second support base, and a pre-buried pipe is arranged between the first support base and the second support base. After workers install the pre-buried pipe on the first support base and the second support base, a motor is started, the motor is started to drive the screw rod to rotate, the screw rod and the movable rod are synchronously rotated through a belt, so that the gear on the movable rod rotates to drive the gear ring between the two moving plates to rotate, and the detection probe is fixedly installed on the inner wall of the gear ring. When the detection probe detects a leakage point on the pre-buried pipe, the motor is immediately turned off. The detection probe is located at the leakage point. The gear ring moves with the two moving plates, and the pre-buried pipe is slowly detected from the left end to the right end outside, so that the precise leak detection effect is achieved, and the device has high practicability.

Description

Technical Field

[0001] This invention relates to the field of prefabricated direct-buried insulated pipe technology, and in particular to a leak detection and alarm device for prefabricated direct-buried insulated pipes. Background Technology

[0002] Full name: High-density polyethylene plastic outer sheath polyurethane foam prefabricated direct-buried insulation pipe. Good insulation materials should have low thermal conductivity; not deteriorate when damp; good heat resistance; not corrode metals; be lightweight and porous; possess certain mechanical strength and not be damaged by external forces; be easy to process and inexpensive. Commonly used insulation materials include: expanded perlite and its products, glass wool and its products, rock wool products, microporous calcium silicate, aluminum silicate fiber products, foamed plastics, and foamed asbestos.

[0003] The existing patent publication number CN217806329U discloses a leak detection alarm device for prefabricated direct-buried insulated pipes, including a metal inner pipe and an insulation layer. One end of the metal inner pipe is fitted with an end cap, and one end of the end cap is fixedly connected to several sets of connecting sleeve rods. One end of each connecting sleeve rod has a cavity, and a movable block is movably disposed within the cavity. One end of each connecting sleeve rod is elastically connected to a connecting plate, and one end of the connecting plate has several circular slots with a clearance fit to the maximum diameter of the connecting sleeve rod. One end of the inner wall of each circular slot on the connecting plate is fixedly connected to a spring, and the other end of the spring is fixedly connected to the movable block. This invention has a simple structure, a reasonable design, and is practical. Existing leak detection methods for prefabricated direct-buried insulated pipes before installation are relatively simple. This leads to significant time and labor costs for repairs when damage or breakage occurs after the pipes are buried. Therefore, thorough leak detection should be conducted before burying the insulated pipes to extend their service life. To address this issue, we propose a leak detection alarm device for prefabricated direct-buried insulated pipes. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the invention, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] Therefore, the purpose of this invention is to provide a leak detection and alarm device for prefabricated direct-buried insulated pipes. This device can solve the problem that the existing leak detection methods for prefabricated direct-buried insulated pipes before burial are relatively simple, which leads to a lot of manpower and time being needed to repair the pipes when they are damaged or broken after being buried underground. Therefore, sufficient leak detection should be carried out before the insulated pipes are buried to extend their service life.

[0006] To solve the above-mentioned technical problems, the present invention provides a leak detection and alarm device for prefabricated direct-buried insulated pipes, which adopts the following technical solution: it includes a first support base and a second support base, characterized in that: a pre-buried pipe is provided between the first support base and the second support base, the first support base and the second support base are respectively located on the left and right sides of the pre-buried pipe, the left and right ends of the pre-buried pipe are respectively sleeved inside the first support base and the second support base, a detection mechanism is provided between the first support base and the second support base, the detection mechanism includes two moving plates, a gear ring is movably connected between the two moving plates by a bearing, a detection probe is fixedly installed on the inner wall of the gear ring, and a driving mechanism is provided between the first support base and the second support base.

[0007] Optionally, the driving mechanism includes a motor, which is fixedly installed on the left side of the first support base. A screw is fixedly connected to the output end of the motor. The left and right ends of the screw are respectively rotatably connected to the surfaces of the first and second support bases that are close to each other. Two slide rods are fixedly installed between the first and second support bases. Both slide rods are located in front of the screw and are distributed vertically.

[0008] By adopting the above technical solution, this solution starts the motor, which drives the screw to rotate, and the rotation of the screw drives the detection mechanism on the surface to move.

[0009] Optionally, a movable rod is provided between the first support base and the second support base. The movable rod is located directly below the screw, and two slide bars are fixedly installed at equal angles on the surface of the movable rod. Bushings are fixedly installed on the surfaces of both the screw and the movable rod, and a belt is rotatably sleeved between the two bushings.

[0010] By adopting the above technical solution, this solution has bushings fixedly installed on the surfaces of the screw and the movable rod, and a belt is rotatably sleeved between the two bushings. When the screw rotates, it drives the movable rod to rotate.

[0011] Optionally, the surface of the movable rod is provided with a gear, the inside of which is adapted to the slide bars on both sides of the movable rod. The gear is slidably sleeved on the surface of the movable rod through the slide bars. The gear meshes with the gear ring. The bottom of the front surface of the two movable plates is provided with a circular opening. The movable rod is located inside the circular opening, and the gear is located between the two movable plates.

[0012] By adopting the above technical solution, this solution has a gear on the surface of the movable rod. When the movable plate moves, since the gear is located between the two movable plates and is fixedly installed on the surface of the movable rod by a slide bar, the rotation of the movable rod will drive the gear to rotate. When the two movable plates move, they will carry the gear to move on the movable rod.

[0013] Optionally, the screw passes through the surfaces of the two movable plates and is threadedly connected to the surfaces of the two movable plates. Both slide rods pass through the surfaces of the two movable plates, and the two movable plates are slidably disposed on the surfaces of the two slide rods.

[0014] By adopting the above technical solution, this solution connects two movable plates to the screw rod with threads. When the screw rod rotates, it drives the two movable plates to move. The other two ends of the two movable plates are respectively inserted through and slidably set on the surfaces of two sliding rods, which support the movement of the two movable plates.

[0015] Optionally, a testing machine is fixedly installed on the top of the second support base, a first insertion tube is fixedly installed on the left side surface of the testing machine, and an exhaust pipe is fixedly installed on the top of the testing machine. The first insertion tube is connected to the right end of the pre-embedded pipe.

[0016] By adopting the above technical solution, this solution uses a testing machine fixedly installed on the second support base, and a first insertion tube fixedly installed on the left side of the testing machine. The right end of the pre-embedded tube can be connected to the first insertion tube to detect the exhaust process.

[0017] Optionally, a movable seat is provided on the left side of the first support base, and a second insertion tube is fixedly installed on the right side surface of the movable seat. A sealing shell is fixedly fitted on the outer circumference of both the first insertion tube and the second insertion tube. A movable wheel is fixedly installed at the bottom of the movable seat, and the second insertion tube is inserted into the left end of the pre-embedded pipe.

[0018] By adopting the above technical solution, this solution has a movable seat on the left side of the first support seat. After the pre-embedded pipe is placed on the first support seat and the second support seat, the movable wheel drives the second insertion pipe on the movable seat to be inserted into the left end of the pre-embedded pipe to complete the connection, thereby performing exhaust detection.

[0019] Optionally, a removable circulation tube is fixedly installed between the testing machine and the rear surface of the moving seat.

[0020] By adopting the above technical solution, this solution has a detachable circulation pipe fixedly installed between the rear side of the testing machine and the moving base. When performing exhaust testing, the gas can be continuously circulated through the circulation pipe to test the inside of the pre-embedded pipe.

[0021] Optionally, a buzzer is fixedly installed on the front surface of the testing machine, and the buzzer is electrically connected to the testing probe.

[0022] By adopting the above technical solution, this solution has a sounder fixedly installed on the front side of the detection machine. The sounder is electrically connected to the detection probe. When the detection probe detects a leak point on the pre-buried pipe, it will immediately sound an alarm through the sounder.

[0023] Optionally, the detection probe is electrically connected to the motor.

[0024] By adopting the above technical solution, this solution electrically connects the detection probe to the motor. When the detection probe detects a leak point on the pre-embedded pipe, it will immediately stop the motor, so that the location where the detection probe stops is the location of the leak point on the pre-embedded pipe.

[0025] In summary, the present invention has at least one of the following beneficial effects: 1. After the workers install the pre-embedded pipe on the first and second support seats, they start the motor. The motor drives the screw to rotate, and the screw and the movable rod rotate synchronously through a belt. Therefore, the gear on the movable rod rotates, which in turn drives the gear ring between the two moving plates to rotate. The detection probe is fixedly installed on the inner wall of the gear ring. When the detection probe detects a leak point on the pre-embedded pipe, it immediately shuts off the motor. The position where the detection probe stops at this moment is the location of the leak point. The gear ring moves with the two moving plates, slowly detecting the pre-embedded pipe from the outer left end to the outer right end, achieving a precise leak detection effect and strong practicality.

[0026] 2. By setting up a testing machine and a mobile base, staff can use the exhaust pipe to conduct on-site gas delivery to the inside of the pre-embedded pipe, thereby better simulating the gas delivery test of the pre-embedded pipe. At the same time, a detachable circulation pipe is fixedly installed between the testing machine and the mobile base, allowing gas to be continuously delivered inside the pre-embedded pipe, thus better detecting the gas delivery of the pre-embedded pipe. This realizes the simulation test of the pre-embedded pipe, improves the leak detection effect of the pre-embedded pipe, and greatly improves the inspection work before the pre-embedded pipe leaves the factory for use, making it highly practical. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the detection mechanism structure of the present invention; Figure 2This is a schematic diagram of the drive mechanism structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the present invention; Figure 4 This is a three-dimensional schematic diagram of the present invention; Figure 5 This is a schematic diagram of the testing machine structure of the present invention; Figure 6 This is a schematic diagram of the movable seat structure of the present invention.

[0029] Explanation of reference numerals in the attached drawings: 1. First support base; 2. Second support base; 3. Embedded pipe; 4. Moving plate; 5. Gear ring; 6. Detection probe; 7. Motor; 8. Screw; 9. Slide rod; 10. Movable rod; 11. Slide bar; 12. Bushing; 13. Belt; 14. Gear; 15. Sounder; 16. Round opening; 17. Detection machine; 18. First insertion tube; 19. Exhaust pipe; 20. Moving base; 21. Second insertion tube; 22. Sealing shell; 23. Moving wheel; 24. Circulation pipe. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0031] Example 1, refer to Figure 1-3 In this embodiment, to address the issue that existing leak detection methods for prefabricated direct-buried insulated pipes before burial are relatively simple, leading to significant time and labor costs for repairs when damage occurs after the pipes are buried, this invention discloses a leak detection alarm device for prefabricated direct-buried insulated pipes. This is because such methods are often simplistic and result in lengthy repairs when the pipes break or rupture. Therefore, thorough leak detection should be performed before burying the insulated pipes to extend their service life. The system includes a first support base 1 and a second support base 2. A pre-embedded pipe 3 is provided between the first support base 1 and the second support base 2. The first support base 1 and the second support base 2 are located on the left and right sides of the pre-embedded pipe 3, respectively. The left and right ends of the pre-embedded pipe 3 are respectively fitted inside the first support base 1 and the second support base 2. A detection mechanism is provided between the first support base 1 and the second support base 2. The detection mechanism includes two moving plates 4. A gear ring 5 is movably connected between the two moving plates 4 by a bearing. A detection probe 6 is fixedly installed on the inner wall of the gear ring 5. A drive mechanism is provided between the first support base 1 and the second support base 2.

[0032] The drive mechanism includes a motor 7, which is fixedly installed on the left side of the first support base 1. A screw 8 is fixedly connected to the output end of the motor 7. The left and right ends of the screw 8 are respectively rotatably connected to the side surfaces of the first support base 1 and the second support base 2 that are close to each other. Two slide rods 9 are fixedly installed between the first support base 1 and the second support base 2. Both slide rods 9 are located in front of the screw 8 and are distributed vertically.

[0033] A movable rod 10 is also provided between the first support 1 and the second support 2. The movable rod 10 is located directly below the screw 8, and two slide bars 11 are fixedly installed at equal angles on the surface of the movable rod 10. Bushings 12 are fixedly installed on the surfaces of both the screw 8 and the movable rod 10, and a belt 13 is rotatably sleeved between the two bushings 12.

[0034] The movable rod 10 has a gear 14 on its surface. The gear 14 is adapted to the slide bars 11 on both sides of the movable rod 10. The gear 14 is slidably sleeved on the surface of the movable rod 10 through the slide bars 11. The gear 14 meshes with the gear ring 5. The bottom of the front surface of the two movable plates 4 has a round opening 16. The movable rod 10 is located inside the round opening 16, and the gear 14 is located between the two movable plates 4.

[0035] The screw 8 passes through the surfaces of the two movable plates 4 and is threadedly connected to the surfaces of the two movable plates 4. The two slide rods 9 also pass through the surfaces of the two movable plates 4 and are slidably disposed on the surfaces of the two slide rods 9.

[0036] The specific working principle is as follows: By placing the pre-embedded pipe 3 between the first support 1 and the second support 2, the operator starts the drive mechanism, thereby moving the two movable plates 4. A gear ring 5 is movably connected between the two movable plates 4 via a bearing. The detection probe 6 is fixedly installed inside the gear ring 5. Subsequently, the operator starts the motor 7, which drives the screw 8 to rotate. One end of the two movable plates 4 is threadedly connected to the surface of the screw 8, and the other two ends of the two movable plates 4 are slidably set on the surface of the slide rod 9. Therefore, the rotation of the screw 8 can drive the two movable seats 20 to move. A [missing information - likely a device or mechanism] is fixedly installed on the surface of the screw 8 and the movable rod 10. A bushing 12 is provided, and a belt 13 is rotatably sleeved between the two bushings 12. When the screw 8 rotates, it drives the movable rod 10 to rotate. When the movable plate 4 moves, since the gear 14 is located between the two movable plates 4 and is fixedly installed on the surface of the movable rod 10 through the slide bar 11, the rotation of the movable rod 10 drives the gear 14 to rotate. When the two movable plates 4 move, they will carry the gear 14 to move on the movable rod 10. Therefore, the detection probe 6 on the gear ring 5 will move while rotating under the action of the gear 14 and the screw 8, so that every surface of the pre-embedded pipe 3 can be detected without dead angles.

[0037] Example 2, refer to Figure 3-6 In this embodiment, in order to solve the problem that existing pre-buried pipes 3 do not undergo simulated venting detection during inspection, based on the same concept as in Embodiment 1 above, this prefabricated direct-buried insulation pipe leak detection alarm device further includes: The testing machine 17 is fixedly installed on the top of the second support 2. The first insertion tube 18 is fixedly installed on the left side surface of the testing machine 17. The exhaust pipe 19 is fixedly installed on the top of the testing machine 17. The first insertion tube 18 is connected to the right end of the pre-embedded pipe 3.

[0038] A movable seat 20 is provided on the left side of the first support base 1. A second insertion tube 21 is fixedly installed on the right surface of the movable seat 20. Sealing shells 22 are fixedly fitted on the outer circumference of both the first insertion tube 18 and the second insertion tube 21. A movable wheel 23 is fixedly installed at the bottom of the movable seat 20. The second insertion tube 21 is inserted into the left end of the pre-embedded tube 3. A removable circulation tube 24 is fixedly installed between the rear surface of the testing machine 17 and the moving base 20.

[0039] The specific working principle is as follows: A testing machine 17 is fixedly installed on the second support base 2. A first insertion tube 18 is fixedly installed on the left side of the testing machine 17. The right end of the pre-embedded tube 3 can be inserted into the first insertion tube 18 to detect the exhaust process. A movable seat 20 is provided on the left side of the first support base 1. After the pre-embedded tube 3 is placed on the first support base 1 and the second support base 2, the second insertion tube 21 on the movable seat 20 is driven by the movable wheel 23 to be inserted into the left end of the pre-embedded tube 3 to complete the connection and thus detect the exhaust. A detachable circulation tube 24 is fixedly installed between the testing machine 17 and the rear side of the movable seat 20. During the exhaust detection, the gas can be continuously circulated through the circulation tube 24 to detect the inside of the pre-embedded tube 3, thus completing the detection.

[0040] Example 3, refer to Figure 1 , 3 In this embodiment, in order to solve the problem that the existing method of leak detection for pre-buried pipe 3 cannot accurately locate the leak point, based on the same concept as in Embodiment 1 above, the prefabricated direct-buried insulated pipe leak detection alarm device further includes: A buzzer 15 is fixedly installed on the front surface of the testing machine 17, and the buzzer 15 is electrically connected to the testing probe 6.

[0041] The detection probe 6 is electrically connected to the motor 7.

[0042] The specific working principle is as follows: A buzzer 15 is fixedly installed on the front side of the detection machine 17. The buzzer 15 is electrically connected to the detection probe 6. When the detection probe 6 detects a leak point on the pre-embedded pipe 3, it will immediately sound an alarm through the buzzer 15. By electrically connecting the detection probe 6 to the motor 7, the motor 7 will immediately stop when the detection probe 6 detects a leak point on the pre-embedded pipe 3. Thus, the location where the detection probe 6 stops is the location of the leak point on the pre-embedded pipe 3. Thus, the staff can observe the position pointed by the detection probe 6 and quickly find the leak point on the pre-embedded pipe 3, thus achieving accurate leak detection.

[0043] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A leak detection and alarm device for prefabricated direct-buried insulated pipes, comprising a first support base (1) and a second support base (2), characterized in that: An embedded pipe (3) is provided between the first support base (1) and the second support base (2). The first support base (1) and the second support base (2) are located on the left and right sides of the embedded pipe (3), respectively. The left and right ends of the embedded pipe (3) are respectively fitted inside the first support base (1) and the second support base (2). A detection mechanism is provided between the first support base (1) and the second support base (2). The detection mechanism includes two moving plates (4). A gear ring (5) is movably connected between the two moving plates (4) by a bearing. A detection probe (6) is fixedly installed on the inner circumference of the gear ring (5). A driving mechanism is provided between the first support base (1) and the second support base (2). The driving mechanism includes a motor (7), which is fixedly installed on the left side of the first support base (1). The output end of the motor (7) is fixedly connected to a screw (8). The left and right ends of the screw (8) are respectively rotatably connected to the side surfaces of the first support base (1) and the second support base (2) that are close to each other. Two slide rods (9) are fixedly installed between the first support base (1) and the second support base (2). Both slide rods (9) are located in front of the screw (8) and are distributed vertically. A movable rod (10) is provided between the first support base (1) and the second support base (2). The movable rod (10) is located directly below the screw (8), and two slide bars (11) are fixedly installed at equal angles on the surface of the movable rod (10). Bushings (12) are fixedly installed on the surfaces of the screw (8) and the movable rod (10), and a belt (13) is rotatably sleeved between the two bushings (12). The movable rod (10) has a gear (14) on its surface. The gear (14) is adapted to the slide bars (11) on both sides of the movable rod (10). The gear (14) is slidably sleeved on the surface of the movable rod (10) through the slide bars (11). The gear (14) meshes with the gear ring (5). The bottom of the front surface of the two movable plates (4) is provided with a round opening (16). The movable rod (10) is located inside the round opening (16). The gear (14) is located between the two movable plates (4). The screw (8) passes through the surfaces of the two movable plates (4) and is threadedly connected to the surfaces of the two movable plates (4). The two slide rods (9) pass through the surfaces of the two movable plates (4) and are slidably disposed on the surfaces of the two slide rods (9).

2. The leak detection and alarm device for prefabricated direct-buried insulated pipes according to claim 1, characterized in that: The second support base (2) is fixedly installed with a testing machine (17). The left side surface of the testing machine (17) is fixedly installed with a first insertion tube (18). The top of the testing machine (17) is fixedly installed with an exhaust pipe (19). The first insertion tube (18) is inserted into the right end of the pre-embedded pipe (3).

3. The leak detection and alarm device for prefabricated direct-buried insulated pipes according to claim 2, characterized in that: The first support base (1) has a movable base (20) on its left side. A second insertion tube (21) is fixedly installed on the right side surface of the movable base (20). A sealing shell (22) is fixedly fitted on the outer circumference of both the first insertion tube (18) and the second insertion tube (21). A movable wheel (23) is fixedly installed at the bottom of the movable base (20). The second insertion tube (21) is inserted into the left end of the pre-embedded tube (3).

4. The leak detection and alarm device for prefabricated direct-buried insulated pipes according to claim 3, characterized in that: A removable circulation tube (24) is fixedly installed between the rear surface of the testing machine (17) and the moving base (20).

5. A leak detection and alarm device for prefabricated direct-buried insulated pipes according to claim 1, characterized in that: A buzzer (15) is fixedly installed on the front surface of the testing machine (17), and the buzzer (15) is electrically connected to the testing probe (6).

6. A leak detection and alarm device for prefabricated direct-buried insulated pipes according to claim 1, characterized in that: The detection probe (6) is electrically connected to the motor (7).

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