Leakage detection device for heat transmission pipeline

Abstract

The utility model discloses a leakage detection device for a heat transmission pipeline, which relates to the technical field of leakage detection of heat pipelines, and comprises a switch valve, wherein one side of the switch valve is connected to a heat pipeline body, a fixing ring is installed on the top of the heat pipeline body, a truncated cone-shaped heat-insulating shell is arranged above the fixing ring, a guide groove is provided on the top of the truncated cone-shaped heat-insulating shell, an annular inner groove is connected below the guide groove, a second spring is fixedly connected inside the annular inner groove, an annular pressure plate is fixed on the top of the second spring, a second rubber sealing ring is arranged above the annular pressure plate, a connector is arranged above the truncated cone-shaped heat-insulating shell, a hollow ejector rod is fixed inside the connector, a guide block is fixed on the outer wall of the connector, and a pressure gauge is installed on the top of the connector. The utility model can install the seal inside the truncated cone-shaped heat-insulating shell by setting a sealing installation mechanism, thereby achieving the effect of sealing and leak prevention, thereby further enhancing the sealing effect of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal pipeline leakage detection, in particular to a thermal transmission pipeline leakage detection device. Background Art

[0002] The heat supply network is also called heat supply pipeline, which starts from the boiler room, direct-fired machine room, heating center, etc., and leads from the heat source to the heat supply entrance of the building. Multiple heat supply pipelines form a network. The design pressure of the hot water medium for heating is less than or equal to 2.5MPa, and the design temperature is less than or equal to 200℃; the design pressure of the steam medium for heating is less than or equal to 1.6MPa, and the design temperature is less than or equal to 350℃.

[0003] The thermal network is also called the thermal pipeline. It starts from the boiler room, direct-fired machine room, heating center, etc., and is the heating pipeline from the heat source to the thermal entrance of the building. Due to the requirements of urban planning and aesthetics, it is not allowed to be laid overhead on the ground. It is usually laid underground with trenches. Leakage of thermal pipelines will cause energy waste and affect the heating of users, bringing additional maintenance burden to heating companies. Therefore, thermal pipelines need to be inspected regularly. The heating pipeline is composed of multiple layers, and smaller pipeline leaks are very difficult to detect. In addition, the transmission pipeline is long, and it is laborious to check point by point, and the efficiency is extremely low.

[0004] After searching the existing Chinese patents: a thermal pipeline leakage detection device (Announcement No.: CN219453684U), including a switch valve, the right side of the switch valve is bolted with a connecting pipe, characterized in that an elastic closure assembly is installed on the upper part of the connecting pipe, a pressure gauge is arranged on the upper part of the elastic closure assembly, a threaded connector is integrated at the lower part of the pressure gauge, a hollow push rod is welded at the lower part of the threaded connector, and the elastic closure assembly includes an insulation shell, the lower part of the insulation shell is bolted with a fixed base, and a sealing spring and a sealing valve plate are placed on the inner side of the insulation shell. The beneficial effects of the utility model are: through the arrangement of the insulation shell, the fixed base, the sealing spring and the sealing valve plate, it is conducive to the sealing arrangement of the detection port, and the self-sealing structure of the spring can prevent hot air from spraying out.

[0005] Although the above patent has a disadvantage, it connects the threaded connector to the insulation shell by means of a threaded connection. When the threads of the threaded connector and the insulation shell rotate for a long time, thread wear will occur, resulting in a large gap in the connection between the two, which in turn leads to a deterioration in the sealing effect, thereby affecting the detection of pipeline leakage.

[0006] Therefore, it is necessary to invent a leakage detection device for a heat transfer pipeline to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a leakage detection device for a heat transport pipeline, so as to solve the problem in the background art that the threaded connection between the threaded connector and the heat-insulating shell of the device is easily worn and thus causes poor sealing effect.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leakage detection device for a heat transport pipeline, comprising a switch valve, one side of the switch valve is connected to a heat pipe body, a fixing ring is installed on the top of the heat pipe body, a truncated cone-shaped heat-insulating shell is arranged above the fixing ring, a guide groove is opened on the top of the truncated cone-shaped heat-insulating shell, an annular inner groove is connected to the bottom of the guide groove, a second spring is fixedly connected to the inside of the annular inner groove, an annular pressure plate is fixed to the top of the second spring, a second rubber sealing ring is arranged above the annular pressure plate, a connecting head is arranged above the truncated cone-shaped heat-insulating shell, a hollow push rod is fixed to the inside of the connecting head, a guide block is fixed to the outer wall of the connecting head, and a pressure gauge is installed on the top of the connecting head.

[0009] Preferably, a limiting hole is provided on the side wall of the fixing ring, and a first rubber sealing ring is arranged outside the fixing ring.

[0010] Preferably, a sliding hole is provided inside the truncated cone-shaped heat-insulating outer shell, and a mounting frame is fixed to the groove of the truncated cone-shaped heat-insulating outer shell.

[0011] Preferably, a sliding rod is connected to the interior of the installation frame, and a handle is fixed to one end of the sliding rod.

[0012] Preferably, a movable plate is fixed to the outer wall of the sliding rod, and a limiting sliding block is fixed to one side of the movable plate.

[0013] Preferably, the limiting sliding block is externally connected with a limiting groove, and a first spring is fixed to the side surface of the movable plate.

[0014] Preferably, a sealing spring is fixed inside the truncated cone-shaped heat-insulating outer shell, and a sealing valve plate is fixedly connected to the top of the sealing spring.

[0015] Technical effects and advantages of the utility model:

[0016] 1. By setting a sealing installation mechanism, a connector is fixedly connected to the bottom of the pressure gauge, two groups of guide blocks are fixed to the outer wall of the connector, a truncated cone-shaped heat-insulating shell is arranged below the connector, two groups of guide grooves are opened on the top of the truncated cone-shaped heat-insulating shell, an annular inner groove is arranged inside the guide groove, a second spring is fixed inside the annular inner groove, an annular pressure plate is fixedly connected to the top of the second spring, and a second rubber sealing ring is arranged above the annular pressure plate. When the connector slides into the two groups of guide grooves through the two groups of guide blocks, and then the two groups of guide blocks are pushed into the annular inner groove, the two groups of guide blocks squeeze the second rubber sealing ring, and the second rubber sealing ring squeezes the annular pressure plate. The annular pressure plate squeezes the second spring, so that the two groups of guide blocks are in the annular inner groove, and then rotate a certain angle so that the two groups of guide blocks and the guide groove are not on the same central axis, and then the connector is loosened. Under the action of the second spring deformation reset, the annular pressure plate squeezes the second rubber sealing ring, and the second rubber sealing ring squeezes the two groups of guide blocks at the same time, so as to achieve the effect of sealing the installation connector, solve the problem in the prior art that the threaded connector and the heat-insulating shell are threadedly connected and the thread wear is easy to occur, which leads to the deterioration of the sealing effect, further enhances the sealing effect of the device, and also realizes the function of convenient installation of the device;

[0017] 2. By setting up a disassembly and assembly mechanism, a fixing ring is fixed on the top of the thermal pipeline body, a first rubber sealing ring is arranged on the outside of the fixing ring, a limiting hole is arranged on the side wall of the fixing ring, a sliding hole is arranged on the side wall below the truncated cone-shaped thermal insulation shell, a mounting frame is fixed on the side wall below the truncated cone-shaped thermal insulation shell, a sliding rod is connected to the inside of the mounting frame, a handle is fixed to one end of the sliding rod, a movable plate is fixed to the outer wall of the sliding rod, a first spring is fixedly connected to the side of the movable plate, and the two sets of handles are pulled to make the sliding rod disengage from the limiting hole, so that the truncated cone-shaped thermal insulation shell can be separated from the fixing ring, thereby achieving the disassembly of the truncated cone-shaped thermal insulation shell. The effect of the conical heat-insulating shell is that when the conical heat-insulating shell needs to be installed on the fixed ring, the two sets of pull handles are pulled to make the sliding rod slide into the sliding hole. At this time, the first spring is stretched and deformed, and then the conical heat-insulating shell is inserted into the outside of the fixed ring and fits tightly with the first rubber sealing ring. Then, the two sets of pull handles are loosened, and under the action of the first spring deformation reset, the sliding rod is inserted into the limiting hole, so that the fixing ring is limited, thereby achieving the effect of installing the conical heat-insulating shell, and the first rubber sealing ring is tightly fitted with the conical heat-insulating shell, thereby ensuring the sealing effect during installation;

[0018] 3. By setting a sealing valve plate, a sealing spring, a connector, a hollow push rod and a pressure gauge, as the connector enters into the truncated cone-shaped insulation shell, the lower part of the hollow push rod pushes the sealing valve plate downward. At this time, the gap between the sealing valve plate and the truncated cone-shaped insulation shell gradually increases, and then the hot air enters the inner side of the pressure gauge. A certain value is displayed on the pressure gauge, and then the switch valve is closed. At this time, the value on the pressure gauge will change. Compare whether the two values ​​are within a certain range. When the pressure is lower than the standard value, it means that there is a leak in the pipeline. This is conducive to using pressure to detect the pressure in the thermal pipeline. A decrease in pressure indicates that the pipeline is leaking, which is suitable for detecting long thermal pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a front view structural schematic diagram of a leakage detection device for a heat transport pipeline according to the utility model.

[0021] Figure 2 The utility model is a cross-sectional view of a thermal pipeline body and a truncated cone-shaped heat-insulating shell of a leakage detection device for a thermal transmission pipeline.

[0022] Figure 3 The utility model is a leakage detection device for a heat transmission pipeline Figure 2 Enlarged view of point A in the middle.

[0023] Figure 4 The utility model is a leakage detection device for a heat transmission pipeline Figure 2 Enlarged view of point B in the middle.

[0024] Figure 5 The utility model is a schematic diagram of a top view of a leakage detection device for a heat transport pipeline.

[0025] Figure 6 The utility model is a schematic diagram of the structure of a leakage detection device for a heat transport pipeline viewed from above.

[0026] In the figure: 1. switch valve; 2. thermal pipe body; 3. fixing ring; 4. limiting hole; 5. first rubber sealing ring; 6. truncated cone-shaped insulation shell; 7. sliding hole; 8. mounting frame; 9. sliding rod; 10. pull handle; 11. movable plate; 12. limiting slider; 13. limiting groove; 14. first spring; 15. sealing spring; 16. sealing valve plate; 17. guide groove; 18. annular inner groove; 19. second spring; 20. annular pressure plate; 21. second rubber sealing ring; 22. connector; 23. hollow push rod; 24. guide block; 25. pressure gauge. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] The utility model provides Figure 1-6 The leakage detection device of a heat transport pipeline shown in the figure comprises a switch valve 1, a heat pipe body 2 is connected to one side of the switch valve 1, a fixing ring 3 is installed on the top of the heat pipe body 2, wherein the fixing ring 3 serves to connect a truncated cone-shaped heat-insulating shell 6, a truncated cone-shaped heat-insulating shell 6 is arranged above the fixing ring 3, wherein the truncated cone-shaped heat-insulating shell 6 serves to install a connecting head 22, a guide groove 17 is opened on the top of the truncated cone-shaped heat-insulating shell 6, wherein the guide groove 17 allows a guide block 24 to slide inside it, an annular inner groove 18 is connected below the guide groove 17, wherein the annular inner groove 18 serves to install a second spring 19, a second spring 19 is fixedly connected to the inside of the annular inner groove 18, wherein the second spring 19 serves to drive the annular pressure plate 20 to move, and the second spring 19 is provided on the inner side of the annular inner groove 18. An annular pressure plate 20 is fixed on the top of the second spring 19, wherein the annular pressure plate 20 plays a role in squeezing the second rubber sealing ring 21. A second rubber sealing ring 21 is arranged above the annular pressure plate 20, wherein the second rubber sealing ring 21 plays a role in sealing and preventing air leakage. A connecting head 22 is arranged above the truncated cone-shaped thermal insulation shell 6, wherein the connecting head 22 plays a role in connecting the truncated cone-shaped thermal insulation shell 6 and the pressure gauge 25. A hollow push rod 23 is fixed inside the connecting head 22, wherein the hollow push rod 23 plays a role in pushing the sealing valve plate 16 to move downward. A guide block 24 is fixed to the outer wall of the connecting head 22, wherein the guide block 24 plays a role in guiding the movement of the connecting head 22. A pressure gauge 25 is installed on the top of the connecting head 22, wherein the pressure gauge 25 plays a role in measuring the pipeline pressure.

[0029] A limiting hole 4 is provided on the side wall of the fixing ring 3, and a first rubber sealing ring 5 is arranged outside the fixing ring 3, wherein the limiting hole 4 serves to limit the movement of the sliding rod 9, and the first rubber sealing ring 5 serves to seal and prevent air leakage.

[0030] A sliding hole 7 is provided inside the truncated cone-shaped heat-insulating outer shell 6, and a mounting frame 8 is fixed at the groove of the truncated cone-shaped heat-insulating outer shell 6, wherein the sliding hole 7 allows the sliding rod 9 to slide inside it, and the mounting frame 8 allows the sliding rod 9 to slide within a limited position inside it.

[0031] A sliding rod 9 is connected to the interior of the mounting frame 8 , and a pull handle 10 is fixed to one end of the sliding rod 9 , wherein the sliding rod 9 serves to connect the fixing ring 3 , and the pull handle 10 serves to facilitate pulling the sliding rod 9 .

[0032] A movable plate 11 is fixed to the outer wall of the sliding rod 9, and a limiting slider 12 is fixed to one side of the movable plate 11, wherein the movable plate 11 plays a role in driving the first spring 14 to stretch, and the limiting slider 12 plays a role in guiding the movable plate 11 to move.

[0033] The outside of the limiting slider 12 is connected with a limiting groove 13, and the side of the movable plate 11 is fixed with a first spring 14, wherein the limiting groove 13 allows the limiting slider 12 to slide inside thereof, and the first spring 14 plays a role in deformation restoration.

[0034] A sealing spring 15 is fixed inside the truncated cone-shaped thermal insulation shell 6, and a sealing valve plate 16 is fixedly connected to the top of the sealing spring 15, wherein the sealing spring 15 drives the sealing valve plate 16 to perform telescopic movement, and the sealing valve plate 16 expands or reduces the gap between the sealing valve plate 16 and the truncated cone-shaped thermal insulation shell 6. When the connecting head 22 is separated from the truncated cone-shaped thermal insulation shell 6, it can effectively prevent the loss of hot air in the thermal pipe body 2.

[0035] Working principle: when in use, the connecting head 22 is slid into the two groups of guide grooves 17 through the two groups of guide blocks 24, and then the two groups of guide blocks 24 are pushed into the annular inner groove 18. At this time, the two groups of guide blocks 24 squeeze the second rubber sealing ring 21 in the annular inner groove 18, and the second rubber sealing ring 21 squeezes the annular pressure plate 20 below, and the annular pressure plate 20 squeezes the second spring 19, so that the two groups of guide blocks 24 are in the annular inner groove 18, and then rotate a certain angle so that the two groups of guide blocks 24 and the guide groove 17 are not on the same central axis, and then the connecting head 22 is released. Under the action of the deformation and reset of the second spring 19, the annular pressure plate 20 squeezes the second rubber sealing ring 21, so that the second rubber sealing ring 21 squeezes the two groups of guide blocks 24 at the same time, so as to achieve the effect of sealing and installing the connecting head 22, which solves the problem that the threaded joint and the insulation shell in the prior art are threadedly connected and the thread wear is easy to occur, which leads to the deterioration of the sealing effect, further enhances the sealing effect of the device, and also realizes the function of convenient installation of the device.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A leakage detection device for a heat transport pipeline, comprising a switch valve (1), characterized in that: One side of the switch valve (1) is connected to a thermal pipeline body (2); a fixing ring (3) is installed on the top of the thermal pipeline body (2); a truncated cone-shaped heat-insulating shell (6) is arranged above the fixing ring (3); a guide groove (17) is opened on the top of the truncated cone-shaped heat-insulating shell (6); an annular inner groove (18) is connected below the guide groove (17); a second spring (19) is fixedly connected inside the annular inner groove (18); an annular pressure plate (20) is fixed on the top of the second spring (19); a second rubber sealing ring (21) is arranged above the annular pressure plate (20); a connector (22) is arranged above the truncated cone-shaped heat-insulating shell (6); a hollow push rod (23) is fixed inside the connector (22); a guide block (24) is fixed on the outer wall of the connector (22); and a pressure gauge (25) is installed on the top of the connector (22).

2. A heat transfer pipeline leakage detection device according to claim 1, characterized in that: A limiting hole (4) is provided on the side wall of the fixing ring (3), and a first rubber sealing ring (5) is provided outside the fixing ring (3).

3. A heat transfer pipeline leakage detection device according to claim 1, characterized in that: A sliding hole (7) is provided inside the truncated cone-shaped heat-insulating outer shell (6), and a mounting frame (8) is fixed at the groove of the truncated cone-shaped heat-insulating outer shell (6).

4. A heat transfer pipeline leakage detection device according to claim 3, characterized in that: The interior of the installation frame (8) is connected to a sliding rod (9), and a handle (10) is fixed to one end of the sliding rod (9).

5. A heat transfer pipeline leakage detection device according to claim 4, characterized in that: A movable plate (11) is fixed to the outer wall of the sliding rod (9), and a limiting sliding block (12) is fixed to one side of the movable plate (11).

6. A heat transfer pipeline leakage detection device according to claim 5, characterized in that: The outside of the limiting sliding block (12) is connected to a limiting groove (13), and the side surface of the movable plate (11) is fixed with a first spring (14).

7. A heat transfer pipeline leakage detection device according to claim 1, characterized in that: A sealing spring (15) is fixed inside the truncated cone-shaped heat-insulating outer shell (6), and a sealing valve plate (16) is fixedly connected to the top of the sealing spring (15).

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