Water inlet and outlet assembly applied to pipeline leak detection

Abstract

This invention relates to the field of pipeline inspection technology, and particularly to an inlet / outlet water assembly for pipeline leak detection. This assembly needs to be used in conjunction with a pipeline leak detection system. The system includes two three-way valves and one five-way valve, which control water inflow or outflow to detect leaks. The mounting base of this assembly has a horizontally positioned first connecting hole and a vertically positioned first vertical through hole connecting to the first connecting hole. A first sealing threaded sleeve can be screwed into the internal thread of a first stepped groove, so that a first pressure sensor abuts against a first sealing ring. After the pipeline leak detection is completed, by opening both ends of the first connecting hole, because the first vertical through hole is above the first connecting hole, water remaining in the first vertical through hole, as well as at the first pressure sensor and the first sealing ring, can flow into the first connecting hole under its own weight and be discharged from both ends of the first connecting hole, thus avoiding residual water.

Description

Technical Field

[0001] This invention relates to the field of pipeline inspection technology, and in particular to an inlet / outlet water assembly for pipeline leak detection. Background Technology

[0002] Built-in pressure pipes (such as water pipes or underfloor heating pipes) are concealed works, generally installed underground or inside walls. Due to pipe quality or temperature changes, leaks can easily occur in built-in pressure pipes. When a leak occurs, it is necessary to accurately locate the leak point for timely repair. Existing pipe leak detection solutions require using connectors to connect to both ends of the pipe under test (to allow water inlet and outlet), and then installing pressure sensors at the connectors. The leak location is determined by the pressure value detected by the pressure sensors. However, the internal structure of existing connectors is not well designed, making it easy for water to remain after use. In low-temperature freezing environments, this residual water can freeze and expand, damaging the pressure sensors inside the connector. Summary of the Invention

[0003] The main objective of this invention is to provide an inlet / outlet water assembly for pipeline leak detection, which aims to solve the problem that existing connectors used for pipeline leak detection are prone to water residue, and that in low-temperature freezing environments, the residual water will freeze and expand, damaging the pressure sensor inside the connector.

[0004] To achieve the above objectives, the technical solution proposed by this invention is as follows: An inlet / outlet water assembly for detecting leaks in pipelines includes a mounting base, a first sealing ring, a first pressure sensor, and a first sealing threaded sleeve. The mounting base includes a first outer wall and a second outer wall that are parallel and opposite to each other, and a third outer wall located between the first and second outer walls. The first and second outer walls are both vertically arranged; the third outer wall is horizontally arranged. The mounting base has a through-hole; both ends of the through-hole penetrate the first and second outer walls respectively. The mounting base also has a first vertical through-hole; the bottom end of the first vertical through-hole connects to the first connecting hole. The top end penetrates the third outer wall; the inner wall of the first vertical through hole is coaxially provided with a first stepped groove; the inner wall of the first stepped groove is provided with an internal thread; the first pressure sensor is disposed in the first stepped groove and abuts against the first sealing ring; the first sealing threaded sleeve can be screwed into the internal thread of the first stepped groove so that the first pressure sensor abuts against the first sealing ring; the top of the first sealing threaded sleeve is provided with a first central through hole; the cable of the first pressure sensor passes through the first central through hole; the two ends of the first connecting hole are used to seal the inlet end of the three-way valve connected to the outside and the external test pipe, respectively.

[0005] Preferably, the first pressure sensor is a diaphragm pressure sensor; the first pressure sensor includes a support ring and a diaphragm disposed at the center of the support ring; the lower sidewall of the support ring of the first pressure sensor abuts against the first sealing ring; the upper sidewall of the support ring of the first pressure sensor abuts against the bottom end of the first sealing threaded sleeve; the diameters of the first connecting hole and the first vertical through hole are the same.

[0006] Preferably, the device further includes a second sealing ring, a second pressure sensor, and a second sealing threaded sleeve; the mounting base also has a second through hole; the two ends of the second through hole pass through the second outer wall and the second outer wall respectively; the mounting base also has a second vertical through hole; the bottom end of the second vertical through hole is connected to the second through hole, and the top end of the second vertical through hole passes through the third outer wall; the central axis of the second through hole is parallel to the central axis of the first through hole; the central axis of the second vertical through hole is parallel to the central axis of the first vertical through hole; the inner wall of the second vertical through hole has a second stepped groove coaxially formed; the inner wall of the second stepped groove is provided with an internal thread; the second pressure sensor is disposed in the second stepped groove and abuts against the second sealing ring; the second sealing threaded sleeve can be screwed into the internal thread of the second stepped groove so that the second pressure sensor abuts against the second sealing ring; the top of the second sealing threaded sleeve has a second central through hole; the cable of the second pressure sensor passes through the second central through hole; the two ends of the second through hole are used to seal the connection to the external three-way valve and the outlet end of the external test pipe respectively.

[0007] Preferably, it further includes a third sealing ring, a third pressure sensor, and a third sealing threaded sleeve; the mounting base also has a third through hole; both ends of the third through hole pass through the third outer wall and the third outer wall respectively; the mounting base has a third vertical through hole; the bottom end of the third vertical through hole is connected to the third through hole, and the top end of the third vertical through hole passes through the third outer wall; the central axis of the third through hole is parallel to the central axis of the first through hole; the central axis of the third vertical through hole is parallel to the central axis of the first vertical through hole; the inner wall of the third vertical through hole has a third stepped groove coaxially formed; the inner wall of the third stepped groove is provided with an internal thread; the third pressure sensor is placed in the third stepped groove and abuts against the third sealing ring; the third sealing threaded sleeve can be screwed into the internal thread of the stepped groove so that the third pressure sensor abuts against the third sealing ring; the top of the third sealing threaded sleeve has a third central through hole; the cable of the third pressure sensor passes through the third central through hole; the two ends of the third through hole are used to seal connections to an external five-way valve and a safety valve respectively.

[0008] Preferably, the inner diameters of the first connecting hole, the second connecting hole, and the third connecting hole are the same; the inner diameters of the first vertical through hole, the second vertical through hole, and the third vertical through hole are the same; and the inner diameters of the first stepped groove, the second stepped groove, and the third stepped groove are the same.

[0009] Preferably, the mounting base is further provided with a water inlet hole and a drain hole; the two ends of the water inlet hole are respectively through the first outer wall and the second outer wall; the two ends of the drain hole are respectively through the first outer wall and the second outer wall; the central axis of the water inlet hole is parallel to the central axis of the drain hole; the central axis of the water inlet hole is parallel to the central axis of the first connecting hole.

[0010] Preferably, both the water inlet and the drain are located between the second connecting hole and the third connecting hole; the second connecting hole is located between the first connecting hole and the third connecting hole.

[0011] Preferably, it further includes a connecting pipe component; the connecting pipe component includes an adapter, a locking sleeve, and a connecting pipe; an annular baffle is provided on the outer wall of the middle part of the adapter; the adapter has a through hole; the annular baffle is perpendicular to the central axis of the through hole; one end of the outer wall of the adapter is provided with a first external thread; the other end of the outer wall of the adapter is provided with a second external thread; the first external thread and the second external thread are respectively located on both sides of the annular baffle; internal threads are provided at both ends of the first connecting hole, internal threads are also provided at both ends of the second connecting hole, and internal threads are provided at one end of the first connecting hole; the first external thread... The internal thread of the connecting tube can be screwed into the internal thread of the first connecting hole, or the internal thread of the second connecting hole, or the internal thread of the third connecting hole, so that the annular baffle fits against the mounting base; one end of the connecting tube has an outwardly extending annular protrusion; a through hole is opened in the middle of the locking sleeve; the connecting tube slides through the through hole, and the outer diameter of the connecting tube is the same as the inner diameter of the through hole; the annular protrusion is located inside the locking sleeve; the inner sidewall of the locking sleeve is provided with an internal thread, and the locking sleeve can be screwed into the second external thread, so that the inner bottom wall of the locking sleeve and one end of the adapter are respectively pressed against the two sides of the annular protrusion.

[0012] Preferably, the safety valve is located on the side of the third connecting hole that is not provided with internal threads.

[0013] Preferably, the connecting pipe is a flexible tube.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: The inlet / outlet water assembly for pipeline leak detection proposed in this invention solves the problem that water residue easily remains in the joints used for pipeline leak detection. In low-temperature freezing environments, this residual water can freeze and expand, damaging the pressure sensor inside the joint. This inlet / outlet water assembly needs to be used in conjunction with a pipeline leak detection system. Specifically, the pipeline leak detection system includes two three-way valves and one five-way valve, which control the inlet or outlet water flow to achieve pipeline leak detection. The mounting base in this assembly has a horizontally positioned first connecting hole and a vertically positioned first vertical through hole. The bottom end of the first vertical through hole connects to the first connecting hole, and the top end penetrates through a third outer wall. The inner wall of the first vertical through hole has a coaxially formed first stepped groove, and a first sealing threaded sleeve can engage with it. The first pressure sensor is screwed into the internal thread of the first stepped groove so that it abuts against the first sealing ring. The first sealing ring and the first sealing threaded sleeve are screwed together to maintain a seal, and the first pressure sensor can measure the pressure of the water flowing through the first connecting hole. After the pipeline leak detection is completed, the remaining water in the first connecting hole can be discharged from both ends of the first connecting hole by opening both ends of the first connecting hole. The first vertical through hole is located above the first connecting hole. The water remaining in the first vertical through hole, as well as the water at the first pressure sensor and the first sealing ring, can also flow into the first connecting hole under its own weight and be discharged from both ends of the first connecting hole to avoid residual water, thereby preventing the pressure sensor from being damaged by the expansion of residual water due to freezing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a side cross-sectional schematic diagram of an embodiment of the inlet / outlet water assembly for pipeline leak detection proposed in this invention; Figure 2 for Figure 1 Enlarged detail diagram at point A in the middle; Figure 3 This is a schematic diagram of the connecting pipe component of an embodiment of the inlet / outlet water assembly for pipeline leak detection proposed in this invention.

[0017] Explanation of reference numerals in the attached figures: 110. Mounting base; 120. First outer wall; 130. Third outer wall; 140. First connecting hole; 150. Second connecting hole; 160. Third connecting hole; 170. First vertical through hole; 180. Second vertical through hole; 190. Third vertical through hole; 210. First stepped groove; 220. Second stepped groove; 230. Third stepped groove; 240. Water inlet hole; 250. Drain hole; 260. First sealing ring; 270. First pressure sensor; 280. First sealing threaded sleeve; 290. Cable; 310. Support ring body; 320. Diaphragm; 330. Adapter; 340. Annular baffle; 350. Inner through hole; 360. First external thread; 370. Second external thread; 380. Locking sleeve; 390. Connecting pipe; 410. Annular protrusion; 420. Round through hole.

[0018] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0021] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0024] This invention proposes an inlet / outlet water assembly for detecting leaks in pipelines.

[0025] As attached Figure 1 - Appendix Figure 3 As shown, in one embodiment of a water inlet / outlet assembly for pipeline leak detection proposed in this invention, the water inlet / outlet assembly for pipeline leak detection includes a mounting base 110, a first sealing ring 260, a first pressure sensor 270, and a first sealing threaded sleeve 280; the mounting base 110 includes a first outer wall 120 and a second outer wall that are parallel to each other and opposite to each other, and a third outer wall 130 located between the first outer wall 120 and the second outer wall; the first outer wall 120 and the second outer wall are both vertically arranged; the third outer wall 130 is horizontally arranged; the mounting base 110 has a through first connecting hole 140; the two ends of the first connecting hole 140 respectively penetrate the first outer wall 120 and the second outer wall; the mounting base 110 has a first vertical through hole 170; the bottom end of the first vertical through hole 170 is connected to the first connecting hole 140. The top end of the first vertical through hole 170 penetrates the third outer wall 130; the inner wall of the first vertical through hole 170 is coaxially provided with a first stepped groove 210; the inner wall of the first stepped groove 210 is provided with an internal thread; the first pressure sensor 270 is disposed in the first stepped groove 210 and abuts against the first sealing ring 260; the first sealing threaded sleeve 280 can be screwed into the internal thread of the first stepped groove 210 so that the first pressure sensor 270 abuts against the first sealing ring 260; the top of the first sealing threaded sleeve 280 is provided with a first central through hole; the cable 290 of the first pressure sensor 270 passes through the first central through hole; the two ends of the first connecting hole 140 are used to seal the connection to the external three-way valve and the inlet end of the external test pipe respectively, so as to pump water into the test pipe or receive water from the test pipe.

[0026] The inlet / outlet water assembly for pipeline leak detection proposed in this invention solves the problem that water residue easily remains in the joints used for pipeline leak detection. In low-temperature freezing environments, this residual water can freeze and expand, damaging the pressure sensor inside the joint. This inlet / outlet water assembly needs to be used in conjunction with a pipeline leak detection system. Specifically, the pipeline leak detection system includes two three-way valves and one five-way valve, which control the inlet or outlet water flow to achieve pipeline leak detection. The mounting base 110 in this assembly has a horizontally arranged first connecting hole 140 and a vertically arranged first vertical through hole 170. The bottom end of the first vertical through hole 170 connects to the first connecting hole 140, and the top end penetrates the third outer wall 130. The inner wall of the first vertical through hole 170 has a coaxially formed first stepped groove 210, and a first sealing threaded sleeve 280 can be screwed into the inner wall of the first stepped groove 210. The threads allow the first pressure sensor 270 to abut against the first sealing ring 260. The first sealing ring 260 and the first sealing threaded sleeve 280 are screwed together to maintain a seal, and the first pressure sensor 270 can measure the pressure of the water flowing through the first connecting hole 140. After completing the pipe leak detection, opening both ends of the first connecting hole 140 allows the remaining water in the first connecting hole 140 to drain out. Since the first vertical through hole 170 is located above the first connecting hole 140, any residual water in the first vertical through hole 170, as well as at the first pressure sensor 270 and the first sealing ring 260, can also flow into the first connecting hole 140 under its own weight and drain out from both ends of the first connecting hole 140, thus preventing residual water from damaging the pressure sensor due to freezing and expansion.

[0027] Furthermore, the first pressure sensor 270 is a diaphragm pressure sensor; the first pressure sensor 270 includes a support ring 310 and a diaphragm 320 disposed at the center of the support ring 310; the lower sidewall of the support ring 310 of the first pressure sensor 270 abuts against the first sealing ring 260; the upper sidewall of the support ring 310 of the first pressure sensor 270 abuts against the bottom end of the first sealing threaded sleeve 280; the diameters of the first connecting hole 140 and the first vertical through hole 170 are the same.

[0028] Meanwhile, the inlet and outlet water assembly for pipeline leak detection also includes a second sealing ring (not shown), a second pressure sensor (not shown), and a second sealing threaded sleeve (not shown); the mounting base 110 also has a second connecting hole 150; the two ends of the second connecting hole 150 pass through the second outer wall and the second outer wall respectively; the mounting base 110 also has a second vertical through hole 180; the bottom end of the second vertical through hole 180 is connected to the second connecting hole 150, and the top end of the second vertical through hole 180 passes through the third outer wall 130; the central axis of the second connecting hole 150 is parallel to the central axis of the first connecting hole 140; the central axis of the second vertical through hole 180 is parallel to the central axis of the first vertical through hole 170. The inner wall of the second vertical through hole 180 is coaxially provided with a second stepped groove 220; the inner wall of the second stepped groove 220 is provided with an internal thread; the second pressure sensor is disposed in the second stepped groove 220 and abuts against the second sealing ring; the second sealing threaded sleeve can be screwed into the internal thread of the second stepped groove 220 so that the second pressure sensor abuts against the second sealing ring; the top of the second sealing threaded sleeve is provided with a second central through hole; the cable 290 of the second pressure sensor passes through the second central through hole; the two ends of the second connecting hole 150 are used to seal the connection to the external three-way valve and the outlet end of the external test pipe respectively, so as to pump water into the test pipe or receive water from the test pipe.

[0029] Specifically, through the above technical solution, the mounting base 110 is provided with a second connecting hole 150, and the second connecting hole 150 is equipped with a second vertical through hole 180, a second stepped groove 220, a second sealing ring, a second pressure sensor, and a second sealing threaded sleeve. Similarly, after the pipeline leak detection is completed, by opening both ends of the second connecting hole 150, the remaining water in the second connecting hole 150 can be discharged from both ends of the second connecting hole 150. Since the second vertical through hole 180 is located above the second connecting hole 150, the water remaining in the second vertical through hole 180, as well as at the second pressure sensor and the second sealing ring, can also flow into the second connecting hole 150 under its own weight and be discharged from both ends of the second connecting hole 150 to avoid residual water.

[0030] In addition, the inlet and outlet water assembly for pipeline leak detection also includes a third sealing ring (not shown), a third pressure sensor (not shown), and a third sealing threaded sleeve (not shown); the mounting base 110 also has a through-hole 160; the two ends of the third through-hole 160 pass through the third outer wall 130 and the third outer wall 130 respectively; the mounting base 110 has a third vertical through-hole 190; the bottom end of the third vertical through-hole 190 is connected to the third through-hole 160, and the top end of the third vertical through-hole 190 passes through the third outer wall 130; the central axis of the third through-hole 160 is parallel to the central axis of the first through-hole 140; the central axis of the third vertical through-hole 190 is parallel to... A third stepped groove 230 is coaxially formed on the inner wall of the third vertical through hole 190 at the central axis of the first vertical through hole 170; the inner wall of the third stepped groove 230 is provided with an internal thread; the third pressure sensor is placed in the third stepped groove 230 and abuts against the third sealing ring; the third sealing threaded sleeve can be screwed into the internal thread of the stepped groove so that the third pressure sensor abuts against the third sealing ring; a third central through hole is formed at the top of the third sealing threaded sleeve; the cable 290 of the third pressure sensor passes through the third central through hole; the two ends of the third connecting hole 160 are used to seal and connect to the external five-way valve and the safety valve respectively, and the safety valve is used to release pressure in time when the pressure exceeds the standard.

[0031] Specifically, through the above technical solution, the mounting base 110 is provided with a third connecting hole 160, and the third connecting hole 160 is equipped with a third vertical through hole 190, a third stepped groove 230, a third sealing ring, a third pressure sensor, and a third sealing threaded sleeve. Similarly, after the pipeline leak detection is completed, by opening both ends of the third connecting hole 160, the remaining water in the third connecting hole 160 can be discharged from both ends of the third connecting hole 160. Since the third vertical through hole 190 is located above the third connecting hole 160, the water remaining in the third vertical through hole 190, as well as at the third pressure sensor and the third sealing ring, can also flow into the third connecting hole 160 under its own weight and be discharged from both ends of the third connecting hole 160 to avoid residual water.

[0032] Meanwhile, the inner diameters of the first connecting hole 140, the second connecting hole 150, and the third connecting hole 160 are the same; the inner diameters of the first vertical through hole 170, the second vertical through hole 180, and the third vertical through hole 190 are the same; and the inner diameters of the first stepped groove 210, the second stepped groove 220, and the third stepped groove 230 are the same.

[0033] In addition, the mounting base 110 is also provided with a water inlet hole 240 and a drain hole 250; the two ends of the water inlet hole 240 are respectively connected to the first outer wall 120 and the second outer wall; the two ends of the drain hole 250 are respectively connected to the first outer wall 120 and the second outer wall; the central axis of the water inlet hole 240 is parallel to the central axis of the drain hole 250; the central axis of the water inlet hole 240 is parallel to the central axis of the first connecting hole 140. The water inlet hole 240 is used to connect to an external water source, and the drain hole 250 is used to connect to an external water tank / bucket.

[0034] Meanwhile, the water inlet hole 240 and the drain hole 250 are both located between the second connecting hole 150 and the third connecting hole 160; the second connecting hole 150 is located between the first connecting hole 140 and the third connecting hole 160.

[0035] In addition, the inlet and outlet water assembly for pipeline leak detection also includes a connecting pipe 390 component; the connecting pipe 390 component includes an adapter 330, a locking sleeve 380, and the connecting pipe 390; an annular baffle 340 is provided on the outer wall of the middle part of the adapter 330; the adapter 330 has a through hole 350; the annular baffle 340 is perpendicular to the central axis of the through hole 350; one end of the outer wall of the adapter 330 is provided with a first external thread 360; the other end of the outer wall of the adapter 330 is provided with a second external thread 370; the first external thread 360 and the second external thread 370 are respectively located on both sides of the annular baffle 340; the inner ends of the first connecting hole 140 are respectively provided with internal threads, and the inner ends of the second connecting hole 150 are also respectively provided with internal threads, and the inner end of the first connecting hole 140 is respectively provided with internal threads. The device is equipped with an internal thread; the first external thread 360 can be screwed into the internal thread of the first connecting hole 140, or the internal thread of the second connecting hole 150, or the internal thread of the third connecting hole 160, so that the annular baffle 340 fits against the mounting base 110; one end of the connecting pipe 390 forms an outwardly extending annular protrusion 410; the locking sleeve 380 has a through hole 420 in the middle; the connecting pipe 390 slides through the through hole 420, and the outer diameter of the connecting pipe 390 is the same as the inner diameter of the through hole 420; the annular protrusion 410 is located inside the locking sleeve 380; the inner sidewall of the locking sleeve 380 is provided with an internal thread, and the locking sleeve 380 can be screwed into the second external thread 370, so that the inner bottom wall of the locking sleeve 380 and one end of the adapter 330 are respectively pressed against the two sides of the annular protrusion 410. The safety valve is located on the side of the third connecting hole 160 that is not provided with an internal thread. Connecting pipe 390 is a flexible tube.

[0036] Specifically, multiple connecting pipe components 390 are provided; and each connecting pipe component 390 is used to connect to a first connecting pipe 390, a second connecting pipe 390, and a third connecting pipe 390, respectively; as shown in the attached figure. Figure 3As shown, the adapter 330 is screwed into the first connecting hole 140 / second connecting hole 150 / third connecting hole 160 through the first external thread 360; and the inner side wall of the locking sleeve 380 is provided with an internal thread so that the locking sleeve 380 can be screwed into the second external thread 370 so that the inner bottom wall of the locking sleeve 380 and one end of the adapter 330 are respectively pressed against the two sides of the annular protrusion 410, thereby locking the connecting pipe 390; the connecting pipe 390 here is used to connect the inlet end of the three-way valve / five-way valve / the pipe under test / the outlet end of the pipe under test.

[0037] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An inlet / outlet water assembly for detecting leaks in pipelines, characterized in that, The device includes a mounting base, a first sealing ring, a first pressure sensor, and a first sealing threaded sleeve. The mounting base includes a first outer wall and a second outer wall that are parallel and opposite to each other, and a third outer wall located between the first outer wall and the second outer wall. The first outer wall and the second outer wall are both vertically arranged. The third outer wall is horizontally arranged. The mounting base has a first through hole. The two ends of the first through hole pass through the first outer wall and the second outer wall, respectively. The mounting base has a first vertical through hole. The bottom end of the first vertical through hole is connected to the first through hole, and the top end of the first vertical through hole passes through the third outer wall. The inner wall of the first vertical through hole has a first stepped groove coaxially formed. The inner wall of the first stepped groove has an internal thread. The first pressure sensor is disposed in the first stepped groove and abuts against the first sealing ring. The first sealing threaded sleeve can be screwed into the internal thread of the first stepped groove so that the first pressure sensor abuts against the first sealing ring. The top of the first sealing threaded sleeve has a first central through hole. The cable of the first pressure sensor passes through the first central through hole. The two ends of the first through hole are used to seal the inlet end of the external three-way valve and the external test pipe, respectively.

2. The inlet / outlet water assembly for pipeline leak detection according to claim 1, characterized in that, The first pressure sensor is a diaphragm pressure sensor; the first pressure sensor includes a support ring and a diaphragm disposed at the center of the support ring; the lower sidewall of the support ring of the first pressure sensor abuts against the first sealing ring; the upper sidewall of the support ring of the first pressure sensor abuts against the bottom end of the first sealing threaded sleeve; the diameters of the first connecting hole and the first vertical through hole are the same.

3. The inlet / outlet water assembly for pipeline leak detection according to claim 2, characterized in that, It also includes a second sealing ring, a second pressure sensor, and a second sealing threaded sleeve; the mounting base also has a second through hole; the two ends of the second through hole pass through the second outer wall and the second outer wall respectively; the mounting base also has a second vertical through hole; the bottom end of the second vertical through hole is connected to the second through hole, and the top end of the second vertical through hole passes through the third outer wall; the central axis of the second through hole is parallel to the central axis of the first through hole; the central axis of the second vertical through hole is parallel to the central axis of the first vertical through hole; the inner wall of the second vertical through hole has a second stepped groove coaxially formed; the inner wall of the second stepped groove is provided with an internal thread; the second pressure sensor is disposed in the second stepped groove and abuts against the second sealing ring; the second sealing threaded sleeve can be screwed into the internal thread of the second stepped groove so that the second pressure sensor abuts against the second sealing ring; the top of the second sealing threaded sleeve has a second central through hole; the cable of the second pressure sensor passes through the second central through hole; the two ends of the second through hole are used to seal the outlet end of the external three-way valve and the external test pipe respectively.

4. The inlet / outlet water assembly for pipeline leak detection according to claim 3, characterized in that, It also includes a third sealing ring, a third pressure sensor, and a third sealing threaded sleeve; the mounting base also has a third through hole; the two ends of the third through hole pass through the third outer wall and the third outer wall respectively; the mounting base has a third vertical through hole; the bottom end of the third vertical through hole is connected to the third through hole, and the top end of the third vertical through hole passes through the third outer wall; the central axis of the third through hole is parallel to the central axis of the first through hole; the central axis of the third vertical through hole is parallel to the central axis of the first vertical through hole; the inner wall of the third vertical through hole has a third stepped groove coaxially formed; the inner wall of the third stepped groove is provided with an internal thread; the third pressure sensor is placed in the third stepped groove and abuts against the third sealing ring; the third sealing threaded sleeve can be screwed into the internal thread of the stepped groove so that the third pressure sensor abuts against the third sealing ring; the top of the third sealing threaded sleeve has a third central through hole; the cable of the third pressure sensor passes through the third central through hole; the two ends of the third through hole are used to seal connections to an external five-way valve and a safety valve respectively.

5. The inlet / outlet water assembly for pipeline leak detection according to claim 4, characterized in that, The inner diameters of the first connecting hole, the second connecting hole, and the third connecting hole are the same; the inner diameters of the first vertical through hole, the second vertical through hole, and the third vertical through hole are the same; the inner diameters of the first stepped groove, the second stepped groove, and the third stepped groove are the same.

6. The inlet / outlet water assembly for pipeline leak detection according to claim 4, characterized in that, The mounting base is also provided with a water inlet and a drain hole; the two ends of the water inlet are respectively through the first outer wall and the second outer wall; the two ends of the drain hole are respectively through the first outer wall and the second outer wall; the central axis of the water inlet is parallel to the central axis of the drain hole; the central axis of the water inlet is parallel to the central axis of the first connecting hole.

7. The inlet / outlet water assembly for pipeline leak detection according to claim 6, characterized in that, Both the water inlet and the water outlet are located between the second connecting hole and the third connecting hole; the second connecting hole is located between the first connecting hole and the third connecting hole.

8. The inlet / outlet water assembly for pipeline leak detection according to claim 4, characterized in that, It also includes a connecting pipe component; the connecting pipe component includes an adapter, a locking sleeve, and a connecting pipe; an annular baffle is provided on the outer wall of the middle part of the adapter; the adapter has a through hole; the annular baffle is perpendicular to the central axis of the through hole; one end of the outer wall of the adapter is provided with a first external thread; the other end of the outer wall of the adapter is provided with a second external thread; the first external thread and the second external thread are respectively located on both sides of the annular baffle; internal threads are provided at both ends of the first connecting hole, and internal threads are also provided at both ends of the second connecting hole, and internal threads are provided at one end of the first connecting hole; the first external thread can... The annular baffle is screwed into the internal thread of the first connecting hole, or the internal thread of the second connecting hole, or the internal thread of the third connecting hole, so that the annular baffle fits against the mounting base; one end of the connecting tube has an outwardly extending annular protrusion; a through hole is provided in the middle of the locking sleeve; the connecting tube slides through the through hole, and the outer diameter of the connecting tube is the same as the inner diameter of the through hole; the annular protrusion is located inside the locking sleeve; the inner sidewall of the locking sleeve is provided with an internal thread, and the locking sleeve can be screwed into the second external thread so that the inner bottom wall of the locking sleeve and one end of the adapter are respectively pressed against the two sides of the annular protrusion.

9. An inlet / outlet water assembly for pipeline leak detection according to claim 8, characterized in that, The safety valve is located on the side of the third connecting hole that is not threaded.

10. An inlet / outlet water assembly for pipeline leak detection according to claim 8, characterized in that, The connecting pipe is a flexible tube.

Images