A large-diameter water supply pipeline segmented pressure testing device

Abstract

The present invention discloses a large-diameter water supply pipeline segmented pressure test device, including a water pipe body, an exposed pipe is arranged above the water pipe body, a sealing plate is arranged above the exposed pipe, and a hanging plate is connected to one side of the blind plate through a slide groove, a lower connecting plate is arranged on one side below the hanging plate, a winding wheel is arranged at the opening of the upper connecting plate, a rotating drum is movably connected to the side wall of the water pipe body, and a support rod is connected to the outside of the water pipe body. The present invention uses a movable rod and an amplitude plate to detect the large-diameter water pipe body in a segmented pressure test. When the pressure is greater than 0.02Mpa, it is regarded as a water supply pipeline leaking. The device can accurately detect and judge the position of the leaking hole, without manually listening to the pipeline one meter or more on the road surface to judge the leaking position, and without the need to use expensive hydrogen injection for detection, thereby increasing the overall practicality and convenience, and at the same time reducing manual labor and detection costs.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline quality detection, in particular to a segmented pressure testing device for a large-diameter water supply pipeline. Background Art

[0002] To ensure the quality of pipeline construction, water companies require pressure testing every 1km during construction according to actual conditions. The current pressure testing method is to install a blind plate at the pipe interface every 1km, and cover the road surface with 1M of original soil as the pressure test back, then inject water into the pipeline for pressure testing, and then use 0.9Mpa pressure to test the water in the pipeline, and stabilize the pressure for 30 minutes. As long as the water pressure drops less than 0.02Mpa, it is considered qualified, and clean water is released after the pressure test;

[0003] The disadvantage of the above pressure test method is that when the water pressure drops by more than 0.02Mpa, it indicates that there is a water pipe leak. The existing technology generally has two methods for detecting water pipe leaks:

[0004] First, the specific leaking location of the water pipe is determined by listening above the original soil surface of the water pipe. This method requires a lot of manpower, and in a noisy environment, it is difficult to accurately hear the leaking location of the water pipe due to noise interference;

[0005] Second, drain the water inside the water pipe and fill the inside of the water pipe with hydrogen, and then detect whether there is hydrogen leakage on the original soil road surface corresponding to the water pipe, so as to determine the leaking point of the water pipe. Due to the strong diffusion of gas, it is not easy to accurately find the leaking point, which also increases the consumption of a lot of manpower;

[0006] Therefore, it is necessary to provide a large-diameter water supply pipeline segmented pressure testing device to solve the above technical problems. Summary of the invention

[0007] The purpose of the present invention is to provide a large-diameter water supply pipe segmented pressure testing device to solve the problem in the above background technology that it is difficult to accurately detect the leakage position and the size of the leakage hole of the large-diameter water pipe less than one meter from the road surface when conducting pressure testing. The technical solution of the present invention is aimed at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a large-diameter water supply pipeline segmented pressure testing device, comprising a water pipe body, an exposed pipe is arranged above the water pipe body, and a blind plate is installed between the exposed pipe and the water pipe body, a sealing plate is arranged above the exposed pipe, and a hanging plate is connected to one side of the blind plate through a slide groove, a lower connecting plate is arranged on the lower side of the hanging plate, and an upper connecting plate is installed on the upper side of the hanging plate, a winding wheel is arranged at the opening of the upper connecting plate, and damping shafts are connected to both sides of the winding wheel, a rotating drum is movably connected to the side wall of the water pipe body, and a rotating shaft is installed at one end of the rotating drum, a speed sensor is installed on the outer side of the rotating shaft, and a support rod is connected to the outer side of the water pipe body.

[0009] In a further embodiment, an air valve and a water inlet valve are respectively installed above the sealing plate. The air inside the water pipe body can be discharged through the air valve, and the water inlet valve can facilitate water filling and pressure testing inside the water pipe body.

[0010] In a further embodiment, a pulley is movably connected to an opening on one side of the lower connecting plate, and the pulley can facilitate smoother pulling of the pull rope during the traction process.

[0011] In a further embodiment, a pull rope is wound around the outside of the winding wheel, and one end of the pull rope is connected to a slider, and a telescopic sleeve is installed on one side of the slider. When the slider is injected with water pressure of the same flow rate, the slider can be squeezed and moved, and the pull rope can be gradually pulled to one side, thereby driving the winding wheel to rotate.

[0012] In a further embodiment, a movable sleeve is connected to the outer limiting sleeve of the damping shaft, and a reset spring is arranged on the inner side of the movable sleeve. The movable sleeve and the damping shaft are a telescopic structure, which cooperates with the reset spring to facilitate the installation and disassembly of the winding wheel.

[0013] In a further embodiment, the inner side of the rotating drum and the outer side of the movable sleeve are in a limiting sleeve connection. Through the limiting sleeve connection between the rotating drum and the movable sleeve, the rotating drum can be effectively driven to rotate when the movable sleeve rotates.

[0014] In a further embodiment, a turntable is installed on the outside of the rotating shaft, and a mounting plate is provided on the outside of the turntable through a groove body, and a movable rod is movably connected to the opening of the mounting plate. Under the action of the centrifugal force of the turntable, the movable rod can effectively push the amplitude plate and cause it to vibrate.

[0015] In a further embodiment, a connecting block is provided on one side of the support rod, and a movable shaft is movably connected to the opening of the connecting block, torsion springs are provided on the outer sides of both ends of the movable shaft, and an amplitude plate is provided on the outer side of the movable shaft. The amplitude frequency of the amplitude plate is combined with the speed sensor to effectively test the position and size of the leakage hole of the water outlet pipe body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is provided with a movable rod and an amplitude plate. When water leakage occurs inside the water pipe body, the water pressure inside the water pipe body will be reduced immediately because the water pipe body is continuously filled with the same amount of water, thereby slowing down the speed of pushing the slider to the right, and then the speed of pulling the pull rope to the right is synchronously slowed down, so that the rotation speed of the winding wheel, damping shaft, rotating drum, rotating shaft and turntable around which the pull rope is wound is synchronously slowed down, and at this time, the speed of rotation of the mounting plate and the movable rod around the center of the turntable is simultaneously slowed down, so that the movable rod instantly reduces the pushing frequency of the amplitude plate, and then the amplitude frequency of the amplitude plate is also reduced at the same time. When the amplitude plate is tested by the amplitude tester of the connector, the amplitude curve displayed will also change significantly, and when the shaft rotates, its rotation speed can be tested by the rotation speed sensor, and the rotation speed sensor is connected to the amplitude tester, so that the travel of the pull rope and the slider can be detected. Compared with the existing technology, the pull rope and the slider can determine the specific position of the hole according to the rotation speed sensor, and according to the obvious change of the amplitude curve, the size of the leaking hole can be more intuitively and accurately inferred, so that people can accurately infer the leaking position of the water pipe body and the size of the leaking hole on the amplitude tester.

[0018] In summary, when the water pressure drop of the large-diameter water pipe body during the segmented pressure test is greater than 0.02Mpa, the device can accurately detect and judge the location of the leak hole, without the need to manually listen to the leak location step by step on the road surface more than one meter above the pipeline, and without the need to use expensive hydrogen injection for detection, thereby increasing the overall practicality and convenience, and at the same time reducing labor and detection costs;

[0019] 2. The present invention is provided with a telescopic sleeve, a damping shaft, a movable sleeve, a reset spring and a rotating drum. The telescopic sleeve is pulled out and extended to the limit state so that one end of the telescopic sleeve is against the blind plate, and the side connected to the slider is installed on the inner side of the water pipe body, so that the initial position of the slider can be effectively determined, and the damping shaft is nested inside the movable sleeve through the reset spring, and the hanging plate and the blind plate are slidably connected, which facilitates the removal of the winding wheel from the rotating drum and the blind plate. The taken out hanging plate, winding wheel, pull rope and slider can continue to be used when the water pipe body is subsequently embedded, thereby increasing the utilization rate of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a preferred embodiment of a large-diameter water supply pipeline segmented pressure testing device provided by the present invention;

[0021] Figure 2 for Figure 1The schematic diagram of the installation structure of the slider and the telescopic sleeve is shown;

[0022] Figure 3 for Figure 1 AA cross-sectional structural schematic diagram shown;

[0023] Figure 4 for Figure 3 The enlarged structural diagram of point A shown;

[0024] Figure 5 for Figure 3 The enlarged structural schematic diagram of point B is shown.

[0025] In the figure: 1. water pipe body; 101. speed sensor; 2. open pipe; 3. blind plate; 4. sealing plate; 401. air valve; 402. water inlet valve; 5. hanging plate; 6. lower connecting plate; 601. pulley; 7. upper connecting plate; 8. winding wheel; 801. pull rope; 802. slider; 803. telescopic sleeve; 9. damping shaft; 901. movable sleeve; 902. reset spring; 10. rotating drum; 11. rotating shaft; 1101. turntable; 1102. mounting plate; 1103. movable rod; 12. support rod; 1201. connecting block; 1202. movable shaft; 1203. torsion spring; 1204. amplitude plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-5The present invention provides an embodiment: a large-diameter water supply pipeline segmented pressure test device, including a water pipe body 1, a speed sensor 101, an open pipe 2, a blind plate 3, a sealing plate 4, an air valve 401, a water inlet valve 402, a hanging plate 5, a lower connecting plate 6, a pulley 601, an upper connecting plate 7, a winding wheel 8, a pull rope 801, a slider 802, a telescopic sleeve 803, a damping shaft 9, a movable sleeve 901, a reset spring 902, a rotating drum 10, a rotating shaft 11, a rotating disk 1101, a mounting plate 1102, a movable rod 1103, a support rod 12, a connecting block 1201, a movable shaft 1202, and a torsion spring 120 3 and amplitude plate 1204, an exposed pipe 2 is arranged above the water pipe body 1, and a blind plate 3 is installed between the exposed pipe 2 and the water pipe body 1, a sealing plate 4 is arranged above the exposed pipe 2, and a hanging plate 5 is connected to one side of the blind plate 3 through a slide groove, a lower connecting plate 6 is arranged on the lower side of the hanging plate 5, and an upper connecting plate 7 is installed on the upper side of the hanging plate 5, a winding wheel 8 is arranged at the opening of the upper connecting plate 7, and damping shafts 9 are connected to the winding wheel 8 on both sides, a rotating drum 10 is movably connected to the side wall of the water pipe body 1, and a rotating shaft 11 is installed at one end of the rotating drum 10, a speed sensor 101 is installed on the outer side of the rotating shaft 11, and a support rod 12 is connected to the outer side of the water pipe body 1. Example 1

[0028] See also Figure 1-3, an air valve 401 and a water inlet valve 402 are respectively installed above the sealing plate 4, a pulley 601 is movably connected to the opening on one side of the lower connecting plate 6, a pull rope 801 is wound around the outside of the winding wheel 8, and one end of the pull rope 801 is connected to a slider 802, a telescopic sleeve 803 is installed on one side of the slider 802, a movable sleeve 901 is limitedly sleeved on the outside of the damping shaft 9, and a return spring 902 is arranged on the inside of the movable sleeve 901, the inner side of the rotating drum 10 and the outer side of the movable sleeve 901 are limitedly sleeved, when the water pipe body 1 is buried, the blind plate 3 is pre-sealed and welded on the inside of the water pipe body 1 and the exposed pipe 2, and the hanging plate 5 is installed by sliding with the blind plate 3 through a sliding groove, and the pulley 601 and the winding wheel 8 are pre-installed on the hanging plate 5 through the lower connecting plate 6 and the upper connecting plate 7, and the slider 802 and the pull rope 801 are also pre-installed synchronously, especially when determining the sliding When the block 802 is installed in the installation position, the telescopic sleeve 803 can be pulled out and extended to the limit state, so that one end of the telescopic sleeve 803 can support the blind plate 3, and the side connected to the slider 802 is installed on the inner side of the water pipe body 1, so as to determine the effective initial position of the slider 802. The telescopic sleeve 803 can also effectively facilitate the folding and disassembly of the slider 802 in the later stage. After the water pipe body 1 is pressure tested as required, the water inside it is reversely pumped out. At this time, the slider 802 will move in the opposite direction, and then the rotating shaft 11 is manually rotated unidirectionally, so that the winding wheel 8 rotates in the same direction and the pull rope 801 is reeled. After the reeling is completed, the sealing plate 4 is manually cut open with a cutting knife, and the blind plate 3 and the associated detection mechanism are all taken out. The taken out detection mechanism can continue to be used when the water pipe body 1 is pre-buried in the subsequent stage, and finally the sealing plate 4 is fully welded on the exposed pipe 2 again; Example 2

[0029] See also Figure 1-5, which is different from Example 1, is that a rotating disk 1101 is installed on the outside of the rotating shaft 11, and a mounting plate 1102 is arranged on the outside of the rotating disk 1101 through a groove body, a movable rod 1103 is movably connected to the opening of the mounting plate 1102, a connecting block 1201 is arranged on one side of the support rod 12, and a movable shaft 1202 is movably connected to the opening of the connecting block 1201, torsion springs 1203 are arranged on the outside of both ends of the movable shaft 1202, and an amplitude plate 1204 is arranged on the outside of the movable shaft 1202, when the water pipe body 1 is in When water leakage occurs on the side, since the water pipe body 1 continues to be filled with the same amount of water, once the water pipe body 1 leaks, the water pressure will immediately decrease, and the speed of the slider 802 moving to the right will slow down, which makes the speed of the pull rope 801 pulling to the right slow down, so that the rotation speed of the winding wheel 8, the damping shaft 9 and the rotating drum 10 around which the pull rope 801 is wound will slow down at the same time, and the rotation speed of the rotating shaft 11 and the rotating disk 1101 will also slow down. At this time, the mounting plate 1102 and the movable rod At the same time, the speed of 1103 rotating around the center of the turntable 1101 slows down, so that the movable rod 1103 instantly reduces the pushing frequency of the amplitude plate 1204. When the frequency of the movable rod 1103 pushing the amplitude plate 1204 is reduced, the amplitude frequency of the amplitude plate 1204 will also decrease accordingly. At this time, the amplitude curve displayed by the amplitude tester of the connector of the amplitude plate 1204 will also change significantly, and when the rotating shaft 11 rotates, its rotation speed can be tested by the speed sensor 101. The speed sensor 101 here is connected to the amplitude tester, so that the movement stroke of the pull rope 801 and the slider 802 can be detected. For example, when a hole appears inside the water pipe body 1, the pull rope 801 and the slider 802 can determine the specific position of the hole according to the speed sensor 101, and according to the obvious change of the amplitude curve, the size of the leakage hole can be more intuitively and accurately inferred, thereby facilitating people to accurately infer the leakage position of the water pipe body 1 and the size of the leakage hole on the amplitude tester.

[0030] Working principle: Figure 1-3 As shown, when the water pipe body 1 is buried, the blind plate 3 is pre-sealed and welded to the inner side of the water pipe body 1 and the exposed pipe 2, and the hanging plate 5 is installed by sliding connection with the blind plate 3 through the slide groove, and the pulley 601 and the winding wheel 8 are pre-installed on the hanging plate 5 through the lower connecting plate 6 and the upper connecting plate 7, and the slider 802 and the pull rope 801 are also pre-installed synchronously. In particular, when determining the installation position of the slider 802, the telescopic sleeve 803 can be pulled out and extended to the limit state, so that one end of the telescopic sleeve 803 is against the blind plate 3, and the side connected to the slider 802 is installed on the inner side of the water pipe body 1, so as to determine the effective initial position of the slider 802, and the telescopic sleeve 803 can also effectively facilitate the folding and disassembly of the slider 802 in the later stage;

[0031] like Figure 1-5As shown, when a large-diameter water pipe buried below one meter is subjected to a pressure test, water is first injected into the water pipe body 1 through the water inlet valve 402 above the sealing plate 4 at the same flow rate. When the cavity between the blind plate 3 and the slider 802 is filled with water, since the slider 802 is made of polyester, the material not only has good sealing performance, but also has very good wear resistance and very high smoothness. At this time, water is always injected and pushed at the same water pressure to push the slider 802. At this time, the slider 802 will move to one side at a uniform speed under the action of the water pressure thrust. When the slider 802 moves at a uniform speed, it will drive the pull rope 801 to cooperate with the pulley 601 to be evenly released on the outside of the winding wheel 8. Since the winding wheel 8 is connected to the upper connecting plate 7 through the damping shaft 9, when the pull rope 80 When the wire is released continuously at a uniform speed, the winding wheel 8 will be driven to rotate at a uniform speed, thereby driving the damping shaft 9 and the movable sleeve 901 to rotate synchronously. Since the upper end of the movable sleeve 901 and the inner side of the lower part of the rotating drum 10 are square in shape, when the movable sleeve 901 rotates, the rotating drum 10 and the rotating shaft 11 can be driven to rotate synchronously, thereby driving the rotating disk 1101, the mounting plate 1102 and the movable rod 1103 to rotate simultaneously. When the movable rod 1103 rotates around the rotating disk 1101, the amplitude plate 1204 can be pushed intermittently, so that the amplitude plate 1204 cooperates with the torsion spring 1203 and the movable shaft 1202 to vibrate at the same frequency at the opening of the connecting block 1201. In the above state, there is no water leakage inside the water pipe body 1;

[0032] When water leakage occurs inside the water pipe body 1, since the water pipe body 1 is continuously filled with the same amount of water, once water leakage occurs in the water pipe body 1, the water pressure will decrease immediately, and at this time the speed of the slider 802 moving to the right will slow down, which makes the speed of the pull rope 801 pulling to the right slow down, thus causing the rotation speed of the winding wheel 8, the damping shaft 9 and the rotating drum 10 around which the pull rope 801 is wound to slow down at the same time, and also causes the rotation speed of the rotating shaft 11 and the turntable 1101 to slow down, and at this time the speed of the mounting plate 1102 and the movable rod 1103 rotating around the center of the turntable 1101 slows down at the same time, so that the movable rod 1103 instantly reduces the pushing frequency of the amplitude plate 1204. When the frequency of the movable rod 1103 pushing the amplitude plate 1204 is reduced, the amplitude plate 1 The amplitude frequency of 204 will also decrease accordingly. At this time, the amplitude curve displayed by the amplitude plate 1204 through the amplitude tester of the connector will also change significantly. When the rotating shaft 11 rotates, its rotation speed can be tested by the rotation speed sensor 101. The rotation speed sensor 101 is connected to the amplitude tester, so that the travel of the pull rope 801 and the slider 802 can be detected. For example, when a hole appears inside the water pipe body 1, the pull rope 801 and the slider 802 can determine the specific position of the hole according to the rotation speed sensor 101, and according to the obvious change of the amplitude curve, the size of the leaking hole can be more intuitively and accurately inferred, so that people can accurately infer the leaking position and the size of the leaking hole of the water pipe body 1 on the amplitude tester.

[0033] In summary, when the water pressure drop of the large-diameter water pipe body 1 during the segmented pressure test is greater than 0.02Mpa, the device can accurately detect and determine the location of the leak hole, without the need to manually listen to the leak location step by step on the road surface more than one meter above the pipeline, and without the need to use expensive hydrogen injection for detection, thereby increasing the overall practicality and convenience, and at the same time reducing manual labor and detection costs;

[0034] After the water pipe body 1 is pressure tested as required, the water inside is pumped out in reverse. At this time, the slider 802 will move in the opposite direction, and then the rotating shaft 11 is rotated unidirectionally manually, so that the winding wheel 8 rotates in the same direction and the pull rope 801 is reeled in. After the reeling is completed, the sealing plate 4 is manually cut open with a cutting knife, and the blind plate 3 and the associated detection mechanism are all taken out. The taken out detection mechanism can continue to be used when the water pipe body 1 is subsequently embedded. Finally, the sealing plate 4 is fully welded on the top of the exposed pipe 2 again, thereby completing a series of work.

[0035] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A large-diameter water supply pipeline segmented pressure testing device, comprising a water pipe body (1), characterized in that: An exposed pipe (2) is arranged above the water pipe body (1), and a blind plate (3) is installed between the exposed pipe (2) and the water pipe body (1); a sealing plate (4) is arranged above the exposed pipe (2), and one side of the blind plate (3) is connected to a hanging plate (5) through a sliding groove; a lower connecting plate (6) is arranged below the hanging plate (5), and an upper connecting plate (7) is installed above the hanging plate (5); a winding wheel (8) is arranged at the opening of the upper connecting plate (7), and damping shafts (9) are connected to both sides of the winding wheel (8); a rotating drum (10) is movably connected to the side wall of the water pipe body (1), and a rotating shaft (11) is installed at one end of the rotating drum (10); a rotation speed sensor (101) is installed on the outer side of the rotating shaft (11); and a support rod (12) is connected to the outer side of the water pipe body (1); A pull rope (801) is wound around the outside of the winding wheel (8), one end of the pull rope (801) is connected to a slider (802), and a telescopic sleeve (803) is installed on one side of the slider (802); The outer side of the damping shaft (9) is limitedly sleeved with a movable sleeve (901), and the inner side of the movable sleeve (901) is provided with a return spring (902); The inner side of the rotating cylinder (10) and the outer side of the movable sleeve (901) are in a position-limiting sleeve connection; A rotating disk (1101) is installed on the outside of the rotating shaft (11), and a mounting plate (1102) is arranged on the outside of the rotating disk (1101) through a groove body, and a movable rod (1103) is movably connected to the opening of the mounting plate (1102); A connecting block (1201) is provided on one side of the support rod (12), and a movable shaft (1202) is movably connected to the opening of the connecting block (1201), torsion springs (1203) are provided on the outside of both ends of the movable shaft (1202), and an amplitude plate (1204) is provided on the outside of the movable shaft (1202); When the movable rod (1103) rotates around the turntable (1101), it can intermittently push the amplitude plate (1204).

2. A large-diameter water supply pipeline segmented pressure testing device according to claim 1, characterized in that: An air valve (401) and a water inlet valve (402) are respectively installed above the sealing plate (4).

3. A large-diameter water supply pipeline segmented pressure testing device according to claim 1, characterized in that: A pulley (601) is movably connected to an opening on one side of the lower connecting plate (6).

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