Fire-fighting pipe network leakage detection device

Abstract

The utility model discloses a fire-fighting pipe network leakage detection device, which comprises a pipeline, a detection device is arranged on the outer side of the pipeline, the detection device comprises a pipe sleeve, a fixed plate, a fixed pipe, a movable block, a discharge pipe, a movable rod, a sealing plate, a fixed frame, a push spring and a connecting plate, the pipe sleeve is sleeved on the pipeline, the fixed plate is fixedly connected on two opposite sides of the pipe sleeve, and the movable block is arranged on the movable rod. The fixing pipe is fixedly connected to the pipe sleeve, the movable block is connected with the sealing plate through the movable rod, the discharging pipe is connected to one side of the fixing pipe, the sealing plate is connected with the connecting plate through the push spring, the fixing frame and the connecting plate are both fixedly arranged in the fixing pipe, and a quick clamping device is arranged on the outer side of the fixing plate and comprises a clamping sleeve, a clamping rod, a containing groove, a clamping block, a clamping groove and a guide groove. The clamping rod is sleeved with the clamping sleeve, the containing groove is formed in the inner side of the clamping rod, the clamping block is clamped in the clamping groove, the guide groove and the clamping groove are both formed in the clamping sleeve, and a self-locking mechanism is arranged on the outer side of the clamping rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe network leakage detection technical field more specifically, it relates to a fire pipe network leakage detection device. BACKGROUND

[0002] In the field of fire safety, pipe network leakage detection is an important link to ensure the normal operation of the fire system, however, the existing leakage detection device has many technical defects in practical application, mainly embodied in the following aspects:

[0003] Firstly, the existing pipe network leakage detection method has obvious defects, when the fire pipeline leaks, due to the limitation of detection means, it is difficult to find and locate the leakage position in time, the hysteresis of this detection method not only leads to the continuous waste of water resources, but also may affect the normal operation of the entire fire system due to the continuous deterioration of leakage, even in emergency, it cannot play the due fire fighting function, which brings serious hidden danger to fire safety.

[0004] Secondly, although some special pipe leakage detection equipment appears on the market, these equipment still has significant problems in practical application, specifically, the installation and disassembly process of the equipment often needs to use many professional tools such as wrench and screwdriver, the operation steps are complicated, which not only increases the time cost of installation and maintenance, but also puts forward higher requirements for the professional skills of the operator, especially in some space limited or complex pipeline layout environment, the complicated installation process highlights its limitations, which seriously affects the efficiency of detection work.

[0005] More importantly, although some improved detection devices try to simplify the installation process through quick connection structure, these devices still have the problem of poor stability in actual use, due to the vibration caused by water pressure change in the use process of fire pipe network, and the thermal expansion and cold contraction of pipeline system itself, these simple quick connection structures are easy to loosen or even fall off, the insufficient structural stability not only affects the accuracy of detection data, but also may cause damage or falling of detection equipment, which increases the maintenance cost and safety hidden danger. TECHNICAL FIELD

[0006] (I) technical problem solved

[0007] In view of the problems existing in the prior art, the utility model provides a fire pipe network leakage detection device to solve the technical problems mentioned in the background art.

[0008] (II) technical scheme

[0009] In order to achieve the above purpose, the utility model provides the following technical scheme: a fire pipe network leakage detection device.

[0010] A fire pipe network leakage detection device, it is characterized in that: the pipe outside is equipped with detection device, the detection device includes pipe sleeve, fixed plate, fixed pipe, movable block, discharge pipe, movable rod, sealing plate, fixed frame, push spring and connecting plate, the pipe sleeve is sleeved on the pipe, the fixed plate is fixedly connected on the opposite sides of the pipe sleeve, the fixed pipe is fixedly connected on the pipe sleeve, the movable block is connected with the sealing plate through the movable rod, the discharge pipe is connected on one side of the fixed pipe, the sealing plate is connected with the connecting plate through the push spring, the fixed frame and the connecting plate are fixedly arranged in the fixed pipe, the outer side of the fixed plate is provided with quick clamping device, the quick clamping device includes sleeve, clamping rod, storage slot, clamping block, clamping groove and guide groove, the sleeve is sleeved on the clamping rod, the storage slot is arranged on the inner side of the clamping rod, the clamping block is clamped in the clamping groove, the guide groove and the clamping groove are arranged in the sleeve, and the outer side of the clamping rod is provided with self-locking mechanism.

[0011] The utility model further sets up, pipe sleeve inner wall is equipped with a plurality of partition blocks.

[0012] The utility model further sets up, the fixed pipe is fixedly equipped with slide rail, the sealing plate side wall is equipped with sliding slot, and the sliding slot is matched with the slide rail.

[0013] The utility model further sets up, the storage slot is equipped with spring, and one side of the clamping block is connected with the inner wall of the storage slot through the spring.

[0014] The utility model further sets up, the guide groove, the clamping groove and the clamping block all are provided with chamfer structure, the chamfer structure on the clamping block is with the chamfer structure angle of being located at the guide groove and being located at the clamping groove same, and chamfer design makes the operation process more flow, more stable.

[0015] The utility model further sets up, the self-locking mechanism includes sleeve, a plurality of lock rods and a plurality of lock slots, the sleeve is sleeved on the sleeve, a plurality of lock rods are arranged on the side wall of the sleeve, a plurality of lock slots are arranged on the outer side of the clamping rod, the number of lock slots is twice the number of clamping blocks, and the setting of the self-locking mechanism strengthens the structural stability of the quick clamping device.

[0016] The utility model further sets up, the outer side of the sleeve is equipped with connecting spring, and one end of the lock rod is connected with the outer wall of the sleeve through the connecting spring, and the setting of the connecting spring makes the lock rod can be reset stably.

[0017] The utility model further sets up, and the end of the lock rod and the side wall edge of the lock slot are all round angles, and the design of the round angle structure makes the operation more smooth.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the fire pipe network leakage detection device has the following beneficial effects:

[0020] 1. The detection device is arranged outside the pipeline, the overall structure of the pipe sleeve, the fixing plate and the fixed pipe is matched with the flexible connection of the movable block, the movable rod and the sealing plate, and the elastic support of the push spring and the connecting plate, a complete leakage detection system is formed, the closed space is divided through the arrangement of the plurality of partition blocks, when the pipeline leaks, the sealing plate can timely sense the pressure change and drive the movable block to move out of the fixed pipe, at the same time, the gas is discharged through the discharge pipe, so that the staff can directly observe the leakage position, the technical defects that the leakage cannot be timely found and positioned in the traditional detection method are completely overcome, and water resource waste and system operation failure are effectively avoided.

[0021] 2. The quick clamping device is arranged, the clamping sleeve and the clamping rod are matched, the clamping block in the storage groove and the clamping groove are flexibly switched, and the guiding effect of the guide groove is combined, so that the quick installation of the detection device is realized, especially the chamfer design of each contact surface makes the installation and disassembly more smooth, the defects that a plurality of professional tools are needed in the traditional installation mode are completely abandoned, and the operation can be easily completed even in the environment that the space is limited or the pipeline layout is complex, and the installation efficiency is greatly improved.

[0022] 3. The self-locking mechanism is arranged, the linkage design of the lock sleeve, the lock rod and the lock groove is matched with the elastic effect of the connecting spring, a reliable locking system is formed, the round corner treatment of the lock rod end and the lock groove side wall ensures the smoothness of the rotating process, and the limiting effect of the lock sleeve on the lock rod enables the lock rod and the lock groove to be stably matched, the problem that the existing quick connection structure is poor in stability is overcome, the detection device can be kept stable even in the case that the pipeline vibrates or expands and contracts with heat, and the risk that the detection device is loose and falls off is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole structure schematic view of the fire pipe network leakage detection device in the utility model;

[0024] Figure 2 It is a sectional structure schematic view in the utility model;

[0025] Figure 3 It is a sectional structure schematic view of the fixed pipe part in the utility model;

[0026] Figure 4 It is a sectional structure schematic view of the fixed pipe part at the second angle in the utility model;

[0027] Figure 5It is the cross section structure schematic view of fast clamping device and self locking mechanism part of the utility model.

[0028] Figure 6 For Figure 5 It is the local amplification structure schematic view of A place in the middle.

[0029] Figure 7 It is the cross section structure schematic view of fast clamping device and self locking mechanism part second angle of the utility model.

[0030] In the drawing: 1, pipeline;2, pipe sleeve;3, fixed plate;4, fixed pipe;5, movable block;6, discharge pipe;7, movable rod;8, sealing plate;9, fixed frame;10, push spring;11, connecting plate;12, clamping sleeve;13, clamping rod;14, storage groove;15, clamping block;16, clamping groove;17, guide groove;18, spacer;19, slide rail;20, sliding groove;21, spring;22, lock sleeve;23, lock rod;24, lock groove;25, connecting spring. DETAILED DESCRIPTION

[0031] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with embodiments.

[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0033] In the present application, unless otherwise stated, the orientation such as "up, down" is generally for the direction shown in the drawings, or for the vertical, perpendicular or gravity direction. Similarly, for the convenience of understanding and description, "left, right" is generally for the left and right shown in the drawings, and "inner, outer" refers to the inner and outer relative to the contour of each component, but the above orientation words are not used to limit the present application.

[0034] Please refer to Figures 1-7The utility model relates to a fire-fighting pipe network leakage detection device, which comprises a pipeline 1, a detection device arranged outside the pipeline 1, the detection device comprising a pipe sleeve 2, a fixed plate 3, a fixed pipe 4, a movable block 5, a discharge pipe 6, a movable rod 7, a sealing plate 8, a fixing frame 9, a push spring 10 and a connecting plate 11, the pipe sleeve 2 is sleeved outside the pipeline 1, the fixed plate 3 is fixedly connected to the opposite sides of the pipe sleeve 2, the fixed pipe 4 is fixedly connected to the pipe sleeve 2, the movable block 5 is connected through the movable rod 7 and the sealing plate 8, the discharge pipe 6 is connected to one side of the fixed pipe 4, the sealing plate 8 is connected through the push spring 10 and the connecting plate 11, the fixing frame 9 and the connecting plate 11 are both fixedly arranged in the fixed pipe 4, the outer side of the fixed plate 3 is provided with a quick clamping device, the quick clamping device comprises a clamping sleeve 12, a clamping rod 13, a storage groove 14, a clamping block 15, a clamping groove 16 and a guide groove 17, the clamping sleeve 12 is sleeved on the clamping rod 13, the storage groove 14 is formed in the inner side of the clamping rod 13, the clamping block 15 is clamped in the clamping groove 16, the guide groove 17 and the clamping groove 16 are both arranged in the clamping sleeve 12, and the outer side of the clamping rod 13 is provided with a self-locking mechanism.

[0035] The inner wall of the pipe sleeve 2 is fixedly provided with a partition block 18, and the partition block 18 is provided with a plurality of

[0036] The inner wall of the pipe sleeve 2 is fixedly provided with a partition block 18, and the partition block 18 is provided with a plurality of

[0037] In the embodiment, when the pipeline 1 needs to be subjected to leakage detection, two pipelines 1 are arranged outside the pipeline 1, and a closed space is formed between the two partition blocks 18, when leakage occurs between the two partition blocks 18, the air pressure in the closed space formed between the two partition blocks 18 increases, then the gas pushes the corresponding sealing plate 8 to move, then the sealing plate 8 slides along the sliding rail 19 and the sliding groove 20, and the sealing plate 8 is pressed against the push spring 10 in cooperation with the connecting plate 11, then a gap is formed between the sealing plate 8 and the fixing frame 9, then the gas passes through the gap between the fixing frame 9 and the sealing plate 8, the gap formed in the middle of the sealing plate 8 and finally is discharged through the discharge pipe 6, at the same time, the sealing plate 8 drives the movable block 5 to move through the movable rod 7, so that the movable block 5 is completely moved out to the outside of the fixed pipe 4, which is convenient for the staff to observe, so as to confirm which part of the pipeline 1 leaks, then the two pipe sleeves 2 are removed, and the pipeline 1 is repaired or replaced.

[0038] Please refer to Figures 1-7 As a further embodiment of the whole device: a spring 21 is movably arranged in the storage groove 14, and one side of the clamping block 15 is connected to the inner wall of the storage groove 14 through the spring 21.

[0039] The top side wall of the guide groove 17, the inner wall of the clamping groove 16 and one side of the clamping block 15 are all provided with a chamfer structure, and the chamfer on one side of the clamping block 15 has the same angle as the chamfer structures arranged on the top side wall of the guide groove 17 and the inner wall of the clamping groove 16.

[0040] The self-locking mechanism comprises a lock sleeve 22, lock rods 23 and lock grooves 24. The lock sleeve 22 is movably sleeved outside the clamping sleeve 12 through threads. The lock rods 23 are slidably arranged on the side wall of the clamping sleeve 12. The lock grooves 24 are arranged on the outer side of the clamping rod 13. The number of the lock grooves 24 is twice the number of the clamping blocks 15.

[0041] A connecting spring 25 is arranged outside the clamping sleeve 12. One end of the lock rod 23 is connected with the outer wall of the clamping sleeve 12 through the connecting spring 25.

[0042] The end of the lock rod 23 and the edge of the side wall of the lock groove 24 are both rounded.

[0043] More specifically, when the detection device needs to be removed, first rotate the lock sleeve 22, the lock sleeve 22 will move along the thread arranged on the outer wall of the clamping sleeve 12, then the inner wall of the lock sleeve 22 no longer limits the outer end of the lock rod 23, then rotate the clamping rod 13 counterclockwise, the clamping rod 13 will drive the lock slot 24 arranged on the side wall to rotate, then the side wall of the lock slot 24 extrudes one end of the lock rod 23, because of the round corner design at the end of the lock rod 23 and the edge of the side wall of the lock slot 24, then one end of the lock rod 23 will slide out of the lock slot 24, and the other end of the lock rod 23 will drive the connecting spring 25 to stretch, at the same time, the clamping rod 13 will drive the clamping block 15 to rotate, then the side wall of the clamping slot 16 with a chamfer extrudes the side of the clamping block 15 with a chamfer, then the clamping block 15 is extruded from the clamping slot 16 and slides into the storage slot 14, at the same time, the clamping block 15 extrudes the spring 21 arranged in the storage slot 14, when the clamping block 15 rotates to the position corresponding to the guide slot 17, the spring 21 pushes the clamping block 15 to reset, so that the clamping block 15 slides out of the storage slot 14 and enters the guide slot 17, at the same time, the lock rod 23 moves to the position corresponding to the other lock slot 24, then the connecting spring 25 drives the lock rod 23 to reset, so that one end of the lock rod 23 is inserted into the lock slot 24, then pull the clamping sleeve 12 and the clamping rod 13 to both sides respectively, then one end of the lock rod 23 will be extruded by the side wall of the lock slot 24 again and slide out of the lock slot 24, at the same time, the lock rod 23 will drive the connecting spring 25 to stretch again, then the clamping sleeve 12 and the clamping rod 13 can be removed, then the connecting spring 25 drives the lock rod 23 to slide and reset, then remove the other clamping sleeve 12 and clamping rod 13 according to the above steps, and then remove the two pipe sleeves 2, when the detection device needs to be installed, first fit the two pipe sleeves 2 to the outer side of the pipe 1, then make the clamping rod 13 pass through the mounting hole reserved on the fixed plate 3 from one side of the fixed plate 3, then fit the clamping sleeve 12 to the outer side of the clamping rod 13 from the other side of the other fixed plate 3, and make the clamping block 15 slide along the guide slot 17, then the chamfer arranged at the top end of the clamping rod 13 will push the lock rod 23 away, so that the lock rod 23 drives the connecting spring 25 to stretch again, after the clamping sleeve 12 is completely fitted to the outer side of the clamping rod 13, the corresponding lock slot 24 moves to the position corresponding to the lock rod 23, then the connecting spring 25 drives the lock rod 23 to reset, so that one end of the lock rod 23 is inserted into the lock slot 24, then rotate the clamping rod 13 counterclockwise again, then the clamping rod 13 will drive the clamping block 15 to rotate, then the side of the guide slot 17 with a chamfer at the top end inside extrudes the side of the clamping block 15 with a chamfer, so that the clamping block 15 enters the storage slot 14 again and extrudes the spring 21, then the side wall of the lock slot 24 extrudes one end of the lock rod 23 again, so that the other end of the lock rod 23 drives the connecting spring 25 to stretch again, when the clamping block 15 rotates to the position corresponding to the clamping slot 16, the spring 21 pushes the clamping block 15 to be clamped into the clamping slot 16, then the connecting spring 25 drives the lock rod 23 to reset, so that one end of the lock rod 23 is inserted into the other positioning slot, then rotate the lock sleeve 22 in the opposite direction,The lock sleeve 22 is rotated to reset along the thread line, and then the inner wall of the lock sleeve 22 limits the outer end of the lock rod 23, so that the lock rod 23 cannot move, and then the lock rod 23 and the lock groove 24 cooperate to limit the sleeve 12 and the rod 13, so that the sleeve 12 and the rod 13 can only be rotated synchronously, thereby ensuring the stability of the mounting structure, and ensuring the stable use of the detection device.

[0044] In summary, when the pipeline 1 needs to be detected for leakage, the two pipelines 1 are installed outside the pipeline 1, and a closed space is formed between the two partition blocks 18. When leakage occurs between the two partition blocks 18, the air pressure in the closed space formed between the two partition blocks 18 increases, and then the gas pushes the corresponding sealing plate 8 to move, and then the sealing plate 8 slides along the slide rail 19 and the slide groove 20, and the sealing plate 8 cooperates with the connecting plate 11 to press the push spring 10, and then a gap is formed between the sealing plate 8 and the fixed frame 9. Then the gas passes through the gap between the fixed frame 9 and the sealing plate 8, the gap in the sealing plate 8, and finally is discharged through the discharge pipe 6. At the same time, the sealing plate 8 drives the movable block 5 to move through the movable rod 7, so that the movable block 5 is completely moved outside the fixed pipe 4, which is convenient for the staff to observe, so as to confirm which part of the pipeline 1 leaks, and then the two pipe sleeves 2 are removed to repair or replace the pipeline 1.

[0045] When the detection device needs to be disassembled, first rotate the lock sleeve 22, the lock sleeve 22 will move along the thread arranged on the outer wall of the clamping sleeve 12, then the inner wall of the lock sleeve 22 no longer limits the outer end of the lock rod 23, then rotate the clamping rod 13 counterclockwise, the clamping rod 13 will drive the lock slot 24 arranged on the side wall to rotate, then the side wall of the lock slot 24 extrudes one end of the lock rod 23, because of the round corner design at the end of the lock rod 23 and the side wall edge of the lock slot 24, then one end of the lock rod 23 will slide out of the lock slot 24, and the other end of the lock rod 23 will drive the connecting spring 25 to stretch, at the same time, the clamping rod 13 will drive the clamping block 15 to rotate, then the side wall of the clamping slot 16 with a chamfer extrudes the side of the clamping block 15 with a chamfer, then the clamping block 15 is extruded from the clamping slot 16 and slides into the storage slot 14, at the same time, the clamping block 15 extrudes the spring 21 arranged in the storage slot 14, when the clamping block 15 rotates to the position corresponding to the guide slot 17, the spring 21 pushes the clamping block 15 to reset, so that the clamping block 15 slides out of the storage slot 14 and enters the guide slot 17, at the same time, the lock rod 23 moves to the position corresponding to the other lock slot 24, then the connecting spring 25 drives the lock rod 23 to reset, so that one end of the lock rod 23 is inserted into the lock slot 24, then pull the clamping sleeve 12 and the clamping rod 13 to both sides respectively, then one end of the lock rod 23 will be extruded by the side wall of the lock slot 24 again and slide out of the lock slot 24, at the same time, the lock rod 23 will drive the connecting spring 25 to stretch again, then the clamping sleeve 12 and the clamping rod 13 can be disassembled, then the connecting spring 25 drives the lock rod 23 to slide and reset, then disassemble the other clamping sleeve 12 and clamping rod 13 according to the above steps, and then take off the two pipe sleeves 2, when the detection device needs to be installed, first, sleeve the two pipe sleeves 2 to the outside of the pipe 1, then make the clamping rod 13 pass through the mounting hole reserved on the fixed plate 3 from one side of the fixed plate 3, then sleeve the clamping sleeve 12 to the outside of the clamping rod 13 from the other side of the other fixed plate 3, and make the clamping block 15 slide along the guide slot 17, then the chamfer arranged at the top end of the clamping rod 13 will push the lock rod 23 away, so that the lock rod 23 drives the connecting spring 25 to stretch again, after the clamping sleeve 12 is completely sleeved to the outside of the clamping rod 13, the corresponding lock slot 24 moves to the position corresponding to the lock rod 23, then the connecting spring 25 drives the lock rod 23 to reset, so that one end of the lock rod 23 is inserted into the lock slot 24, then rotate the clamping rod 13 counterclockwise again, then the clamping rod 13 will drive the clamping block 15 to rotate, then the side of the guide slot 17 with a chamfer at the top end inside extrudes the side of the clamping block 15 with a chamfer, so that the clamping block 15 enters the storage slot 14 again and extrudes the spring 21, then the side wall of the lock slot 24 extrudes one end of the lock rod 23 again, so that the other end of the lock rod 23 drives the connecting spring 25 to stretch again, when the clamping block 15 rotates to the position corresponding to the clamping slot 16, the spring 21 pushes the clamping block 15 to enter the clamping slot 16, then the connecting spring 25 drives the lock rod 23 to reset, so that one end of the lock rod 23 is inserted into the other positioning slot, then rotate the lock sleeve 22 in the opposite direction, so that the lock sleeve 22 rotates and resets along the thread line,Then the inner wall of the lock sleeve 22 limits the outer end of the lock rod 23, so that the lock rod 23 cannot move, and then the lock rod 23 and the lock groove 24 cooperate to limit the sleeve 12 and the card rod 13, so that the sleeve 12 and the card rod 13 can only rotate synchronously, thereby ensuring the stability of the mounting structure, ensuring the stable use of the detection device.

[0046] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection mode, which will not be described one by one here. In the above, whenever there is a fixed connection, welding is preferred. Although embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fire service pipe network leak detection apparatus comprising a pipe characterised by: The pipeline is externally provided with a detection device, the detection device comprises a pipe sleeve, a fixed plate, a fixed pipe, a movable block, a discharge pipe, a movable rod, a sealing plate, a fixed frame, a push spring and a connecting plate, the pipe sleeve is sleeved on the pipeline, the fixed plate is fixedly connected on the opposite sides of the pipe sleeve, the fixed pipe is fixedly connected on the pipe sleeve, the movable block is connected with the sealing plate through the movable rod, the discharge pipe is connected on one side of the fixed pipe, the sealing plate is connected with the connecting plate through the push spring, the fixed frame and the connecting plate are fixedly arranged in the fixed pipe, the outer side of the fixed plate is provided with a quick clamping device, the quick clamping device comprises a clamping sleeve, a clamping rod, a storage groove, a clamping block, a clamping groove and a guide groove, the clamping sleeve is sleeved on the clamping rod, the storage groove is arranged on the inner side of the clamping rod, the clamping block is clamped in the clamping groove, the guide groove and the clamping groove are arranged in the clamping sleeve, and the outer side of the clamping rod is provided with a self-locking mechanism.

2. A fire service pipe network leak detection apparatus according to claim 1 characterised in that: A plurality of partition blocks are arranged on the inner wall of the pipe sleeve.

3. A fire service pipework leak detection apparatus according to claim 2, characterised in that: A sliding rail is arranged in the fixed pipe, a sliding groove is arranged on the side wall of the sealing plate, and the sliding groove is matched with the sliding rail.

4. The fire service piping network leak detection apparatus of claim 1, wherein: A spring is arranged in the storage groove, and one side of the clamping block is connected with the inner wall of the storage groove through the spring.

5. A fire service pipe network leak detection apparatus according to claim 4, characterised in that: The guide groove, the clamping groove and the clamping block are all provided with chamfered structures, and the chamfered structures on the clamping block and the chamfered structures in the guide groove and the clamping groove have the same angle.

6. A fire service pipework leak detection apparatus according to any one of claims 1 to 5, wherein: The self-locking mechanism comprises a lock sleeve, a plurality of lock rods and a plurality of lock grooves, the lock sleeve is sleeved on the clamping sleeve, the plurality of lock rods are arranged on the side wall of the clamping sleeve, the plurality of lock grooves are arranged on the outer side of the clamping rod, and the number of the lock grooves is twice the number of the clamping blocks.

7. A fire service pipework leak detection apparatus according to claim 6, characterised in that: The outer side of the clamping sleeve is provided with a connecting spring, and one end of the lock rod is connected with the outer wall of the clamping sleeve through the connecting spring.

8. A fire service pipework leak detection apparatus according to claim 7, characterised in that: The end of the lock rod and the side wall edge of the lock groove are both rounded.

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