Pipeline pressure online detection device for water conservancy irrigation wells

Abstract

The invention discloses an online detection device for pipeline pressure of a water conservancy irrigation well, comprising a high-pressure connecting pipe, one end of the high-pressure connecting pipe is connected with a pressure measuring three-way valve, the second connection end of the pressure measuring three-way valve is connected with a common pressure gauge, the third connection end of the pressure measuring three-way valve is connected with a water conservancy irrigation pipeline through a pipeline, a pipeline stop valve is provided on the pipeline between the pressure measuring three-way valve and the water conservancy irrigation pipeline, the other end of the high-pressure connecting pipe is connected with a manual liquid pressure pump, and the manual liquid pressure pump is connected with a precision pressure gauge. The online detection device for pipeline pressure of a water conservancy irrigation well disclosed by the invention solves the problems of long inspection time and inconvenient disassembly and assembly of pressure measuring instruments of water conservancy irrigation well pipelines.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy irrigation testing equipment, and in particular relates to an online pipeline pressure detection device for a water conservancy irrigation well. Background Art

[0002] Pressure measuring instruments (ordinary pressure gauges or pressure transmitters) play a vital role in water conservancy and irrigation. They can display the water pressure in the pipeline in real time and help operators understand the operating status of the system. By observing the readings of the pressure gauge, the operator can quickly determine whether the system is working within the normal pressure range. If the pressure is too high or too low, the operator can take immediate measures to adjust it. According to the readings of the pressure measuring instrument, the operator can also control the flow of water by adjusting the valve or pump output in the pipeline. For example, when the pressure in a certain section of the pipeline is too high, the output of the pump or the opening of the valve can be reduced to reduce the pressure and ensure the stable operation of the system. By analyzing the readings of the pressure measuring instrument, it is also possible to detect whether the pipeline is blocked and to warn of excessively high pipeline pressure. From this point of view, the accuracy of the numerical output of the pressure measuring instrument directly affects the smooth operation of the water conservancy and irrigation system. In general, ordinary pressure gauges need to be inspected every six months, and pressure transmitters need to be inspected once a year.

[0003] At present, the current problems with pressure gauge inspection are: first, long downtime; pressure gauge inspection and calibration need to be sent to a professional calibration agency, and this process includes disassembly, transportation, inspection, return and reinstallation. Removing the pressure gauge requires shutting down part or all of the irrigation system to ensure the safety of operation. This means that during the disassembly and reinstallation process, the system cannot operate normally, affecting the normal irrigation plan. During this period, the system needs to use a spare pressure gauge or operate without pressure monitoring, increasing the risk of operation. During critical irrigation periods, especially at critical stages of crop growth, downtime can lead to water supply interruptions, affecting crop growth and yield. In addition, after resuming system operation, it may take time to re-establish stable water pressure. Second, the sealing problem; when removing and reinstalling the pressure gauge, the sealing of the pipe joint is a key issue. Old or frequently used seals are prone to aging, wear or damage, which may lead to leakage after installation. This requires replacing the seal and performing a sealing test to ensure the tightness and leakage of the connection. Each replacement of the seal not only increases the material cost, but also requires additional time for sealing performance testing. Third, the demand for human resources is high; disassembly, inspection, calibration and reinstallation of pressure gauges require professional technicians to operate. These personnel need to receive special training and master operating specifications and safety standards. While arranging these tasks, the execution of other daily maintenance tasks may be affected. In an emergency, it may be necessary to hire additional temporary workers or pay overtime, further increasing labor costs. Summary of the invention

[0004] The purpose of the present invention is to provide an online detection device for pipeline pressure of a water conservancy irrigation well, which solves the problems of long inspection time and inconvenient assembly and disassembly of pressure measuring instruments of water conservancy irrigation well pipelines.

[0005] The technical solution adopted by the present invention is an online detection device for pipeline pressure of a water conservancy irrigation well, comprising a high-pressure connecting pipe, one end of the high-pressure connecting pipe is connected to a pressure measuring three-way valve, the second connecting end of the pressure measuring three-way valve is connected to an ordinary pressure gauge, the third connecting end of the pressure measuring three-way valve is connected to a water conservancy irrigation pipeline through a pipeline, a pipeline stop valve is provided on the pipeline between the pressure measuring three-way valve and the water conservancy irrigation pipeline, the other end of the high-pressure connecting pipe is connected to a manual liquid pressure pump, and the manual liquid pressure pump is connected to a precision pressure gauge.

[0006] The present invention is also characterized in that:

[0007] The manual liquid pressure pump includes a booster pump, the inlet end of the booster pump is connected to a pressurized medium storage tank through a pipeline, the outlet end of the booster pump is connected to a pressure regulator through a pipeline, the outlet end of the pressure regulator is connected to a first meter socket and a second meter socket through a pipeline, the pressurized medium storage tank is connected to the pipeline between the pressure regulator and the first meter socket and the second meter socket through a pipeline, the first meter socket is connected to a precision pressure gauge, the second meter socket is connected to a high-pressure connecting pipe, a booster pump stop valve is provided on the pipeline between the booster pump and the pressure regulator, a pressure relief valve is installed on the pipeline connected to the pressurized medium storage tank, and the pressure relief valve is arranged in parallel with the booster pump stop valve.

[0008] The high-pressure connecting pipe includes a high-pressure hose, one end of which is fixedly connected to a high-pressure connecting pipe flat joint, the high-pressure connecting pipe flat joint is connected to a manual liquid pressure pump, one end of the high-pressure hose is fixedly connected to a high-pressure connecting pipe thimble joint, the high-pressure connecting pipe thimble joint is connected to a pressure measuring three-way valve, and an thimble end face groove is provided at the high-pressure connecting pipe thimble end face in the high-pressure connecting pipe thimble joint along the end face diameter direction.

[0009] The pressure measuring three-way valve comprises a stop valve joint end, one end of which is connected to a water conservancy irrigation pipeline through a pipeline, the other end of the stop valve joint end is sleeved with a joint shaft on the outer wall, the joint shaft portion is sleeved with a pressure gauge joint end on the outer wall, the pressure gauge joint end is connected to an ordinary pressure gauge, the middle outer wall of the stop valve joint end and the outer wall of the joint shaft are sleeved with a three-way valve body, the outer wall of the three-way valve body is in contact with the pressure gauge joint end, the inner wall of the three-way end of the three-way valve body is fixedly connected with a detection joint end, the detection joint end is in the shape of a hollow step column, the inner edge of the detection joint end is sequentially provided with a spring, a detection joint valve core, a detection joint sealing body and a detection joint inner end cover in the direction away from the three-way valve body, the outer wall of the detection joint end away from the three-way valve body is sleeved with a detection joint back cap, the inner wall of the detection joint back cap is convex The platform is inserted into the inner end cover of the detection joint and the detection joint sealing body; the stop valve joint end is a hollow step columnar structure, and an axial through hole of the stop valve joint end is axially opened in the inner side of the stop valve joint end, the live connection shaft is a hollow step columnar structure, and an axial hexagonal through hole of the live connection shaft is axially opened in the inner side of the live connection shaft, and the axial through hole of the stop valve joint end corresponds to the axial hexagonal through hole of the live connection shaft, the pressure gauge joint end is a hollow step columnar structure, and the inner diameter of the pressure gauge joint end corresponds to the outer diameter of the live connection shaft, a radial through hole of the stop valve joint end is radially opened in the inner side of the stop valve joint end, a three-way valve body three-way end channel is opened in the three-way valve body, the radial through hole of the stop valve joint end corresponds to the three-way end channel of the three-way valve body, and the through hole in the detection joint end corresponds to the three-way end channel of the three-way valve body.

[0010] An inner groove of the detection joint sealing body is circumferentially provided on the inner wall of one end of the detection joint sealing body close to the inner end cover of the detection joint, and an O-ring on the end face of the detection joint sealing body is provided in the groove of the detection joint sealing body, and the O-ring on the end face of the detection joint sealing body is provided between the detection joint sealing body and the inner wall boss of the detection joint back cap.

[0011] Four parallel three-way valve body grooves are axially opened on the inner wall of the three-way valve body, and valve body straight-through end O-rings are arranged in the four three-way valve body grooves. Two valve body straight-through end O-rings are arranged between the three-way valve body and the stop valve live joint end, and the other two valve body straight-through end O-rings are arranged between the three-way valve body and the live joint connecting shaft.

[0012] An outer wall of the detection joint sealing body close to one end of the detection joint valve core is circumferentially provided with an outer groove of the detection joint sealing body, and an O-ring on the outer end face of the detection joint sealing body is arranged in the outer groove of the detection joint sealing body, and the O-ring on the outer end face of the detection joint sealing body is arranged between the detection joint sealing body and the detection joint end.

[0013] An outer groove of the detection joint end is circumferentially provided on the end face of the detection joint end close to the three-way valve body, and an O-ring of the detection joint end face is arranged in the outer groove of the detection joint end, and the O-ring of the detection joint end face is arranged between the detection joint end and the three-way valve body.

[0014] A first step hole, a second step hole and a third step hole are provided in the detection joint end, the first step hole limits the detection joint sealing body, the second step hole limits the detection joint valve core, and the third step hole limits the spring.

[0015] The beneficial effects of the present invention are:

[0016] The pipeline pressure online detection device for water conservancy irrigation wells provided by the present invention can realize online detection and calibration without disassembling the pressure gauge, greatly improving the maintenance efficiency, reducing the downtime, and ensuring the continuous and efficient operation of the system; the device has a simple structure and is easy to maintain; the one-way valve inside the detection joint of the pressure measuring three-way valve is sealed by an O-ring end face, which is better than the sealing method of winding raw tape around the thread, and there is no need to retest the sealing of the interface after the detection work is completed; the whole set of online detection device is small in size, light in weight, and easy to carry, which is convenient for detection personnel to carry out detection work on site, and one person and one device can carry out detection work, saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an online detection device for pipeline pressure of a water conservancy irrigation well according to the present invention;

[0018] Figure 2 It is a structural schematic diagram of a manual liquid pressure pump of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the high-pressure connecting pipe of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the pressure measuring three-way valve of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the detection connector end of the present invention.

[0022] In the figure, 1. precision pressure gauge, 2. manual liquid pressure pump, 201. first meter socket, 202. booster pump, 203. second meter socket, 204. booster pump stop valve, 205. pressure regulator, 206. pressurized medium storage tank, 207. pressure relief valve, 3. high-pressure connecting pipe, 301. high-pressure connecting pipe flat joint, 302. high-pressure hose, 303. high-pressure connecting pipe thimble joint, 4. ordinary pressure gauge, 5. pressure measuring three-way valve, 500. three-way valve body, 501. pressure gauge joint end, 502. stop valve joint end, 503. detection joint end, 5031. first step hole, 5032. second Step hole, 5033. The third step hole, 504. The back cap of the detection joint, 505. The flexible connection shaft, 506. The inner end O-ring of the detection joint sealing body, 507. The detection joint sealing body, 508. The detection joint valve core, 509. The spring, 510. The straight-through end O-ring of the valve body, 511. The outer end O-ring of the detection joint sealing body, 512. The end O-ring of the detection joint, 513. The inner end cover of the detection joint, 514. The pressure gauge joint O-ring, 515. The axial through hole of the flexible end of the stop valve, 516. The axial hexagonal through hole of the flexible connection shaft, 517. The radial through hole of the flexible end of the stop valve, 6. The pipeline stop valve. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] The present invention provides an online detection device for pipeline pressure of a water conservancy irrigation well, such as Figure 1 As shown, it includes a high-pressure connecting pipe 3, one end of which is connected to a pressure measuring three-way valve 5, the second connection end of which is connected to a common pressure gauge 4, the third connection end of which is connected to a water conservancy irrigation pipe through a pipe, a pipe stop valve 6 is provided on the pipe between the pressure measuring three-way valve 5 and the water conservancy irrigation pipe, the other end of which is connected to a manual liquid pressure pump 2, and the manual liquid pressure pump 2 is connected to a precision pressure gauge 1. Figure 2 As shown, the manual liquid pressure pump 2 includes a booster pump 202, the inlet end of the booster pump 202 is connected to a pressurized medium storage tank 206 through a pipeline, the outlet end of the booster pump 202 is connected to a pressure regulator 205 through a pipeline, the outlet end of the pressure regulator 205 is connected to a first meter connection socket 201 and a second meter connection socket 203 through a pipeline, the pressurized medium storage tank 206 is connected to the pipeline between the pressure regulator 205 and the first meter connection socket 201 and the second meter connection socket 203 through a pipeline, the first meter connection socket 201 is connected to a precision pressure gauge 1, the second meter connection socket 203 is connected to a high-pressure connecting pipe 3, a booster pump stop valve 204 is provided on the pipeline between the booster pump 202 and the pressure regulator 205, a pressure relief valve 207 is installed on the pipeline connected to the pressurized medium storage tank 206, and the pressure relief valve 207 is arranged in parallel with the booster pump stop valve 204. Figure 3As shown, the high-pressure connecting pipe 3 includes a high-pressure hose 302, one end of which is fixedly connected to a high-pressure connecting pipe flat joint 301, which is connected to the manual liquid pressure pump 2, and one end of the high-pressure hose 302 is fixedly connected to a high-pressure connecting pipe thimble joint 303, which is connected to the pressure measuring three-way valve 5, and a thimble end face groove 304 is provided at the high-pressure connecting pipe thimble end face in the high-pressure connecting pipe thimble joint 303 along the end face diameter direction. Figure 4As shown, the pressure measuring three-way valve 5 includes a stop valve joint end 502, one end of the stop valve joint end 502 is connected to the water conservancy irrigation pipeline through a pipeline, the other end of the stop valve joint end 502 is sleeved with a joint shaft 505 on the outer wall, and the joint shaft 505 is partially sleeved with a pressure gauge joint end 501 on the outer wall, and the pressure gauge joint end 501 is connected to the ordinary pressure gauge 4. The middle outer wall of the stop valve joint end 502 and the outer wall of the joint shaft 505 are jointly sleeved with a three-way valve body 500, and the outer wall of the three-way valve body 500 is in contact with the pressure gauge joint end 501. The inner wall of the three-way end of the three-way valve body 500 is fixedly connected with a detection joint end 503, and the detection joint end 503 is in the shape of a hollow step column, and the inner edge of the detection joint end 503 is sequentially provided with Spring 509, detection joint valve core 508, detection joint sealing body 507 and detection joint inner end cover 513, the outer wall of the detection joint end 503 away from the three-way valve body 500 is sleeved with a detection joint back cap 504, the inner wall boss of the detection joint back cap 504 is inserted into the detection joint inner end cover 513 and the detection joint sealing body 507; the stop valve joint end 502 is a hollow stepped columnar structure, and the stop valve joint end 502 is axially provided with a stop valve joint axial through hole 515, the live connection shaft 505 is a hollow stepped columnar structure, and the live connection shaft 505 is axially provided with a live connection shaft axial hexagonal through hole 516, the stop valve joint end axial through hole 515 corresponds to the live connection shaft axial hexagonal through hole 516, the pressure gauge joint The connecting end 501 is a hollow stepped columnar structure, the inner diameter of the pressure gauge joint end 501 corresponds to the outer diameter of the joint connecting shaft 505, a radial through hole 517 of the stop valve joint end is radially opened in the stop valve joint end 502, a three-way valve body three-way end channel 518 is opened in the three-way valve body 500, the radial through hole 517 of the stop valve joint end corresponds to the three-way end channel 518 of the three-way valve body, and the through hole in the detection joint end 503 corresponds to the three-way end channel 518 of the three-way valve body; a detection joint sealing body groove is opened in the inner wall of one end of the detection joint sealing body 507 close to the detection joint inner end cover 513 along the circumferential direction, and the detection joint sealing body end face O-ring 506 is arranged in the groove of the detection joint sealing body, and the detection joint sealing body end face O-ring 506 is arranged in the detection joint sealing body end face O-ring 506 It is arranged between the detection joint sealing body 507 and the inner wall boss of the detection joint back cap 504, and the boss is in close contact with the inner end face O-ring 506 of the detection joint sealing body, so as to play a sealing role; the inner wall of the three-way valve body 500 is provided with four parallel three-way valve body grooves along the axial direction, and the four three-way valve body grooves are all provided with valve body straight-through end O-rings 510, two valve body straight-through end O-rings 510 are arranged between the three-way valve body 500 and the stop valve live joint end 502, and the other two valve body straight-through end O-rings 510 are arranged between the three-way valve body 500 and the live joint shaft 505, the valve body straight-through end O-ring 510 is in close contact with the stop valve live joint end 502, and the valve body straight-through end O-ring 510 is in close contact with the live joint shaft 505, so as to play a sealing role respectively;The outer wall of the detection joint sealing body 507 near one end of the detection joint valve core 508 is provided with a detection joint sealing body groove along the circumferential direction, and the detection joint sealing body groove is provided with an O-ring 511 on the outer end face of the detection joint sealing body. The O-ring 511 on the outer end face of the detection joint sealing body is arranged between the detection joint sealing body 507 and the detection joint end 503. When the spring 509 presses the detection joint valve core 508 tightly, the end face of the detection joint valve core 508 and the O-ring 511 on the outer end face of the detection joint sealing body Tight contact, play a sealing role; the end face of the detection joint end 503 close to the three-way valve body 500 is provided with a detection joint end outer groove along the circumferential direction, and the detection joint end face O-ring 512 is provided in the detection joint end outer groove. The detection joint end face O-ring 512 is provided between the detection joint end 503 and the three-way valve body 500. When the detection joint end 503 is screwed on the three-way end of the three-way valve body 500, the detection joint end face O-ring 512 and the three-way valve body 500 are in close contact, play a sealing role. For example; Figure 5 As shown, a first step hole 5031, a second step hole 5032 and a third step hole 5033 are provided in the detection joint end 503. The first step hole 5031 limits the detection joint sealing body 507, the second step hole 5032 limits the detection joint valve core 508, and the third step hole 5033 limits the spring 509.

[0025] The pipeline pressure online detection device for water conservancy irrigation wells provided by the present invention has the following assembly process: the inner rings of the two straight-through ends of the three-way valve body 500 are provided with four three-way valve body grooves, each of the three-way valve body grooves is equipped with a valve body straight-through end O-ring 510, the stop valve flexible end 502 is inserted into the straight-through end of the three-way valve body 500, the flexible connection shaft 505 passes through the pressure gauge flexible end 501, and is inserted into the other end of the straight-through end of the three-way valve body 500, and the flexible connection shaft 505 and the stop valve flexible end 502 are tightened using an inner hexagonal wrench; the spring 509 is installed into the hole of the detection joint end 503, and then the detection joint valve core 508 is installed, and then the detection joint sealing body 507 with O-rings at both ends is installed, and then the detection joint inner end cover 513 is installed, and finally the installed parts are fixed by machining and spinning the cylindrical surface of the detection joint; finally, the assembled detection joint is screwed into the three-way end of the three-way valve body.

[0026] The present invention provides an online detection device for pipeline pressure of a water conservancy irrigation well, and its working principle is as follows: when the water conservancy irrigation well is working normally, a pipeline stop valve 6, a pressure measuring three-way valve 5, and an ordinary pressure gauge 4 are installed on the pipeline in sequence, the pipeline stop valve 6 is in an open state, and the detection joint end 503 of the pressure measuring three-way valve 5 is equipped with a detection joint back cap 504. At this time, the one-way valve in the detection joint end 503 of the pressure measuring three-way valve 5 is closed to maintain sealing, and the pressure in the pipeline is transmitted to the ordinary pressure gauge 4, and the ordinary pressure gauge 4 normally displays the pipeline pressure. When the common pressure gauge 4 needs to be tested online, close the pipeline stop valve 6, unscrew the detection joint back cap 504 of the pressure measuring three-way valve 5, screw the high-pressure connecting pipe thimble joint 303 of the high-pressure connecting pipe 3 to the detection joint of the pressure measuring three-way valve 5, and the thimble of the high-pressure connecting pipe thimble joint 303 of the high-pressure connecting pipe 3 will push the detection joint valve core 508 open. At this time, the common pressure gauge 4 and the high-pressure connecting pipe 3 are connected, and then the high-pressure connecting pipe plane joint 301 of the high-pressure connecting pipe 3 is installed on one of the meter sockets of the manual liquid pressure pump 2. At this point, the online detection device of the pressure gauge is connected. According to the operation of the "Pressure Gauge Verification Regulations", the pressure gauge is tested by comparing the pressure values ​​of the standard meter and the meter under test. After the detection and calibration is completed, remove the high-pressure connecting pipe 3 from the detection joint end of the pressure measuring three-way valve 5, re-screw the detection joint back cap 504 of the pressure measuring three-way valve, open the pipeline stop valve 6, and the water conservancy irrigation well resumes normal operation.

[0027] Example 1

[0028] The pipeline pressure online detection device for water conservancy irrigation wells proposed in this embodiment is as follows: Figure 1 As shown, it includes a high-pressure connecting pipe 3, one end of the high-pressure connecting pipe 3 is connected to a pressure measuring three-way valve 5, the second connection end of the pressure measuring three-way valve 5 is connected to a common pressure gauge 4, the third connection end of the pressure measuring three-way valve 5 is connected to a water conservancy irrigation pipeline through a pipeline, a pipeline stop valve 6 is provided on the pipeline between the pressure measuring three-way valve 5 and the water conservancy irrigation pipeline, the other end of the high-pressure connecting pipe 3 is connected to a manual liquid pressure pump 2, and the manual liquid pressure pump 2 is connected to a precision pressure gauge 1.

[0029] Example 2

[0030] The pipeline pressure online detection device for water conservancy irrigation wells proposed in this embodiment is as follows: Figure 1 As shown, it includes a high-pressure connecting pipe 3, one end of which is connected to a pressure measuring three-way valve 5, the second connection end of which is connected to a common pressure gauge 4, the third connection end of which is connected to a water conservancy irrigation pipe through a pipe, a pipe stop valve 6 is provided on the pipe between the pressure measuring three-way valve 5 and the water conservancy irrigation pipe, the other end of which is connected to a manual liquid pressure pump 2, and the manual liquid pressure pump 2 is connected to a precision pressure gauge 1. Figure 2As shown, the manual liquid pressure pump 2 includes a booster pump 202, the inlet end of the booster pump 202 is connected to a pressurized medium storage tank 206 through a pipeline, the outlet end of the booster pump 202 is connected to a pressure regulator 205 through a pipeline, the outlet end of the pressure regulator 205 is connected to a first meter connection socket 201 and a second meter connection socket 203 through a pipeline, the pressurized medium storage tank 206 is connected to the pipeline between the pressure regulator 205 and the first meter connection socket 201 and the second meter connection socket 203 through a pipeline, the first meter connection socket 201 is connected to the precision pressure gauge 1, the second meter connection socket 203 is connected to the high-pressure connecting pipe 3, a booster pump stop valve 204 is provided on the pipeline between the booster pump 202 and the pressure regulator 205, a pressure relief valve 207 is installed on the pipeline connected to the pressurized medium storage tank 206, and the pressure relief valve 207 is arranged in parallel with the booster pump stop valve 204.

[0031] Example 3

[0032] The pipeline pressure online detection device for water conservancy irrigation wells proposed in this embodiment is as follows: Figure 1 As shown, it includes a high-pressure connecting pipe 3, one end of which is connected to a pressure measuring three-way valve 5, the second connection end of which is connected to a common pressure gauge 4, the third connection end of which is connected to a water conservancy irrigation pipe through a pipe, a pipe stop valve 6 is provided on the pipe between the pressure measuring three-way valve 5 and the water conservancy irrigation pipe, the other end of which is connected to a manual liquid pressure pump 2, and the manual liquid pressure pump 2 is connected to a precision pressure gauge 1. Figure 2 As shown, the manual liquid pressure pump 2 includes a booster pump 202, the inlet end of the booster pump 202 is connected to a pressurized medium storage tank 206 through a pipeline, the outlet end of the booster pump 202 is connected to a pressure regulator 205 through a pipeline, the outlet end of the pressure regulator 205 is connected to a first meter connection socket 201 and a second meter connection socket 203 through a pipeline, the pressurized medium storage tank 206 is connected to the pipeline between the pressure regulator 205 and the first meter connection socket 201 and the second meter connection socket 203 through a pipeline, the first meter connection socket 201 is connected to a precision pressure gauge 1, the second meter connection socket 203 is connected to a high-pressure connecting pipe 3, a booster pump stop valve 204 is provided on the pipeline between the booster pump 202 and the pressure regulator 205, a pressure relief valve 207 is installed on the pipeline connected to the pressurized medium storage tank 206, and the pressure relief valve 207 is arranged in parallel with the booster pump stop valve 204. Figure 3 As shown, the high-pressure connecting pipe 3 includes a high-pressure hose 302, one end of the high-pressure hose 302 is fixedly connected to a high-pressure connecting pipe plane joint 301, the high-pressure connecting pipe plane joint 301 is connected to the manual liquid pressure pump 2, one end of the high-pressure hose 302 is fixedly connected to a high-pressure connecting pipe ejector joint 303, the high-pressure connecting pipe ejector joint 303 is connected to the pressure measuring three-way valve 5, and an ejector end face groove 304 is provided at the high-pressure connecting pipe ejector end face in the high-pressure connecting pipe ejector joint 303 along the end face diameter direction.

[0033] Example 4

[0034] The pipeline pressure online detection device for water conservancy irrigation wells proposed in this embodiment is as follows: Figure 1 As shown, it includes a high-pressure connecting pipe 3, one end of which is connected to a pressure measuring three-way valve 5, the second connection end of which is connected to a common pressure gauge 4, the third connection end of which is connected to a water conservancy irrigation pipe through a pipe, a pipe stop valve 6 is provided on the pipe between the pressure measuring three-way valve 5 and the water conservancy irrigation pipe, the other end of which is connected to a manual liquid pressure pump 2, and the manual liquid pressure pump 2 is connected to a precision pressure gauge 1. Figure 2 As shown, the manual liquid pressure pump 2 includes a booster pump 202, the inlet end of the booster pump 202 is connected to a pressurized medium storage tank 206 through a pipeline, the outlet end of the booster pump 202 is connected to a pressure regulator 205 through a pipeline, the outlet end of the pressure regulator 205 is connected to a first meter connection socket 201 and a second meter connection socket 203 through a pipeline, the pressurized medium storage tank 206 is connected to the pipeline between the pressure regulator 205 and the first meter connection socket 201 and the second meter connection socket 203 through a pipeline, the first meter connection socket 201 is connected to a precision pressure gauge 1, the second meter connection socket 203 is connected to a high-pressure connecting pipe 3, a booster pump stop valve 204 is provided on the pipeline between the booster pump 202 and the pressure regulator 205, a pressure relief valve 207 is installed on the pipeline connected to the pressurized medium storage tank 206, and the pressure relief valve 207 is arranged in parallel with the booster pump stop valve 204. Figure 3 As shown, the high-pressure connecting pipe 3 includes a high-pressure hose 302, one end of which is fixedly connected to a high-pressure connecting pipe flat joint 301, which is connected to the manual liquid pressure pump 2, and one end of the high-pressure hose 302 is fixedly connected to a high-pressure connecting pipe thimble joint 303, which is connected to the pressure measuring three-way valve 5, and a thimble end face groove 304 is provided at the high-pressure connecting pipe thimble end face in the high-pressure connecting pipe thimble joint 303 along the end face diameter direction. Figure 4As shown, the pressure measuring three-way valve 5 includes a stop valve joint end 502, one end of which is connected to a water conservancy irrigation pipeline through a pipeline, and the outer wall of the other end of the stop valve joint end 502 is sleeved with a joint shaft 505, and a pressure gauge joint end 501 is sleeved on a part of the outer wall of the joint shaft 505, and the pressure gauge joint end 501 is connected to a common pressure gauge 4, and the outer wall of the middle part of the stop valve joint end 502 and the outer wall of the joint shaft 505 are sleeved with a three-way valve body 500, and the three-way valve body 5 The outer wall of the three-way valve body 500 contacts the flexible joint end 501 of the pressure gauge. The inner wall of the three-way end of the three-way valve body 500 is fixedly connected with a detection joint end 503. The detection joint end 503 is in the shape of a hollow stepped column. A spring 509, a detection joint valve core 508, a detection joint sealing body 507 and a detection joint inner end cover 513 are arranged in sequence along the inner edge of the detection joint end 503 away from the three-way valve body 500. The outer wall of the end of the detection joint end 503 away from the three-way valve body 500 is sleeved with a detection joint back cap 504. The inner wall boss of the head back cap 504 is inserted into the inner end cover 513 of the detection joint and the detection joint sealing body 507; the stop valve joint end 502 is a hollow step columnar structure, and an axial through hole 515 of the stop valve joint end is axially opened in the stop valve joint end 502; the joint shaft 505 is a hollow step columnar structure, and an axial hexagonal through hole 516 of the joint shaft is axially opened in the joint shaft 505; the axial through hole 515 of the stop valve joint end is connected to the axial hexagonal through hole 516 of the joint shaft Correspondingly, the pressure gauge union end 501 is a hollow stepped columnar structure, the inner diameter of the pressure gauge union end 501 corresponds to the outer diameter of the union connecting shaft 505, a radial through hole 517 of the shut-off valve union end is radially opened in the shut-off valve union end 502, a three-way valve body three-way end channel 518 is opened in the three-way valve body 500, the radial through hole 517 of the shut-off valve union end corresponds to the three-way end channel 518 of the three-way valve body, and the through hole in the detection joint end 503 corresponds to the three-way end channel 518 of the three-way valve body.

[0035] Example 5

[0036] The pipeline pressure online detection device for water conservancy irrigation wells proposed in this embodiment is as follows: Figure 1 As shown, it includes a high-pressure connecting pipe 3, one end of which is connected to a pressure measuring three-way valve 5, the second connection end of which is connected to a common pressure gauge 4, the third connection end of which is connected to a water conservancy irrigation pipe through a pipe, a pipe stop valve 6 is provided on the pipe between the pressure measuring three-way valve 5 and the water conservancy irrigation pipe, the other end of which is connected to a manual liquid pressure pump 2, and the manual liquid pressure pump 2 is connected to a precision pressure gauge 1. Figure 2As shown, the manual liquid pressure pump 2 includes a booster pump 202, the inlet end of the booster pump 202 is connected to a pressurized medium storage tank 206 through a pipeline, the outlet end of the booster pump 202 is connected to a pressure regulator 205 through a pipeline, the outlet end of the pressure regulator 205 is connected to a first meter connection socket 201 and a second meter connection socket 203 through a pipeline, the pressurized medium storage tank 206 is connected to the pipeline between the pressure regulator 205 and the first meter connection socket 201 and the second meter connection socket 203 through a pipeline, the first meter connection socket 201 is connected to a precision pressure gauge 1, the second meter connection socket 203 is connected to a high-pressure connecting pipe 3, a booster pump stop valve 204 is provided on the pipeline between the booster pump 202 and the pressure regulator 205, a pressure relief valve 207 is installed on the pipeline connected to the pressurized medium storage tank 206, and the pressure relief valve 207 is arranged in parallel with the booster pump stop valve 204. Figure 3 As shown, the high-pressure connecting pipe 3 includes a high-pressure hose 302, one end of which is fixedly connected to a high-pressure connecting pipe flat joint 301, which is connected to the manual liquid pressure pump 2, and one end of the high-pressure hose 302 is fixedly connected to a high-pressure connecting pipe thimble joint 303, which is connected to the pressure measuring three-way valve 5, and a thimble end face groove 304 is provided at the high-pressure connecting pipe thimble end face in the high-pressure connecting pipe thimble joint 303 along the end face diameter direction. Figure 4As shown, the pressure measuring three-way valve 5 includes a stop valve joint end 502, one end of which is connected to a water conservancy irrigation pipeline through a pipeline, and the outer wall of the other end of the stop valve joint end 502 is sleeved with a joint shaft 505, and a part of the outer wall of the joint shaft 505 is sleeved with a pressure gauge joint end 501, and the pressure gauge joint end 501 is connected to a common pressure gauge 4. The middle outer wall of the stop valve joint end 502 and the outer wall of the joint shaft 505 are jointly sleeved with a three-way valve body 500, and the outer wall of the three-way valve body 500 is in contact with the pressure gauge joint end 501. The inner wall of the three-way end of the three-way valve body 500 is fixedly connected with a detection joint end 503, and the detection joint end 503 is in the shape of a hollow step column, and springs 509 are sequentially arranged along the inner edge of the detection joint end 503 in the direction away from the three-way valve body 500. , a detection joint valve core 508, a detection joint sealing body 507 and an inner end cover 513 of the detection joint. The outer wall of the end of the detection joint end 503 away from the three-way valve body 500 is sleeved with a detection joint back cap 504, and the inner wall boss of the detection joint back cap 504 is inserted into the detection joint inner end cover 513 and the detection joint sealing body 507; the stop valve joint end 502 is a hollow stepped columnar structure, and an axial through hole 515 of the stop valve joint end is axially opened in the stop valve joint end 502, and the movable connecting shaft 505 is a hollow stepped columnar structure, and an axial hexagonal through hole 516 of the movable connecting shaft is axially opened in the movable connecting shaft 505, and the axial through hole 515 of the stop valve joint end corresponds to the axial hexagonal through hole 516 of the movable connecting shaft, and the pressure gauge joint end 501 is a hollow stepped columnar structure. The present invention has a structure in which the inner diameter of the pressure gauge joint end 501 corresponds to the outer diameter of the joint connecting shaft 505, a radial through hole 517 of the stop valve joint end is radially provided in the stop valve joint end 502, a three-way valve body three-way end channel 518 is provided in the three-way valve body 500, the radial through hole 517 of the stop valve joint end corresponds to the three-way end channel 518 of the three-way valve body, and the through hole in the detection joint end 503 corresponds to the three-way end channel 518 of the three-way valve body; a detection joint sealing body groove is circumferentially provided in the inner wall of one end of the detection joint sealing body 507 close to the inner end cover 513 of the detection joint, and a detection joint sealing body end surface O-ring 506 is provided in the detection joint sealing body groove, and the detection joint sealing body end surface O-ring 506 is provided between the detection joint sealing body 507 and the detection joint sealing body. The inner wall of the head back cap 504 is provided with four parallel three-way valve body grooves along the axial direction, and the four three-way valve body grooves are provided with valve body straight-through end O-rings 510, two valve body straight-through end O-rings 510 are arranged between the three-way valve body 500 and the stop valve live connection end 502, and the other two valve body straight-through end O-rings 510 are arranged between the three-way valve body 500 and the live connection shaft 505; the outer wall of the detection joint sealing body 507 close to one end of the detection joint valve core 508 is provided with a detection joint sealing body outer groove along the circumferential direction, and the detection joint sealing body outer end face O-ring 511 is arranged in the detection joint sealing body outer groove, and the detection joint sealing body outer end face O-ring 511 is arranged between the detection joint sealing body 507 and the detection joint end 503;An outer groove of the detection joint end is formed along the circumferential direction on one end surface of the detection joint end 503 close to the three-way valve body 500, and an O-ring 512 of the detection joint end surface is arranged in the outer groove of the detection joint end, and the O-ring 512 of the detection joint end surface is arranged between the detection joint end 503 and the three-way valve body 500. ;

[0037] Example 6

[0038] The pipeline pressure online detection device for water conservancy irrigation wells proposed in this embodiment is as follows: Figure 1 As shown, it includes a high-pressure connecting pipe 3, one end of which is connected to a pressure measuring three-way valve 5, the second connection end of which is connected to a common pressure gauge 4, the third connection end of which is connected to a water conservancy irrigation pipe through a pipe, a pipe stop valve 6 is provided on the pipe between the pressure measuring three-way valve 5 and the water conservancy irrigation pipe, the other end of which is connected to a manual liquid pressure pump 2, and the manual liquid pressure pump 2 is connected to a precision pressure gauge 1. Figure 2 As shown, the manual liquid pressure pump 2 includes a booster pump 202, the inlet end of the booster pump 202 is connected to a pressurized medium storage tank 206 through a pipeline, the outlet end of the booster pump 202 is connected to a pressure regulator 205 through a pipeline, the outlet end of the pressure regulator 205 is connected to a first meter connection socket 201 and a second meter connection socket 203 through a pipeline, the pressurized medium storage tank 206 is connected to the pipeline between the pressure regulator 205 and the first meter connection socket 201 and the second meter connection socket 203 through a pipeline, the first meter connection socket 201 is connected to a precision pressure gauge 1, the second meter connection socket 203 is connected to a high-pressure connecting pipe 3, a booster pump stop valve 204 is provided on the pipeline between the booster pump 202 and the pressure regulator 205, a pressure relief valve 207 is installed on the pipeline connected to the pressurized medium storage tank 206, and the pressure relief valve 207 is arranged in parallel with the booster pump stop valve 204. Figure 3 As shown, the high-pressure connecting pipe 3 includes a high-pressure hose 302, one end of which is fixedly connected to a high-pressure connecting pipe flat joint 301, which is connected to the manual liquid pressure pump 2, and one end of the high-pressure hose 302 is fixedly connected to a high-pressure connecting pipe thimble joint 303, which is connected to the pressure measuring three-way valve 5, and a thimble end face groove 304 is provided at the high-pressure connecting pipe thimble end face in the high-pressure connecting pipe thimble joint 303 along the end face diameter direction. Figure 4As shown, the pressure measuring three-way valve 5 includes a stop valve joint end 502, one end of which is connected to a water conservancy irrigation pipeline through a pipeline, and the outer wall of the other end of the stop valve joint end 502 is sleeved with a joint shaft 505, and a part of the outer wall of the joint shaft 505 is sleeved with a pressure gauge joint end 501, and the pressure gauge joint end 501 is connected to a common pressure gauge 4. The middle outer wall of the stop valve joint end 502 and the outer wall of the joint shaft 505 are jointly sleeved with a three-way valve body 500, and the outer wall of the three-way valve body 500 is in contact with the pressure gauge joint end 501. The inner wall of the three-way end of the three-way valve body 500 is fixedly connected with a detection joint end 503, and the detection joint end 503 is in the shape of a hollow step column, and springs 509 are sequentially arranged along the inner edge of the detection joint end 503 in the direction away from the three-way valve body 500. , a detection joint valve core 508, a detection joint sealing body 507 and an inner end cover 513 of the detection joint. The outer wall of the end of the detection joint end 503 away from the three-way valve body 500 is sleeved with a detection joint back cap 504, and the inner wall boss of the detection joint back cap 504 is inserted into the detection joint inner end cover 513 and the detection joint sealing body 507; the stop valve joint end 502 is a hollow stepped columnar structure, and an axial through hole 515 of the stop valve joint end is axially opened in the stop valve joint end 502, and the movable connecting shaft 505 is a hollow stepped columnar structure, and an axial hexagonal through hole 516 of the movable connecting shaft is axially opened in the movable connecting shaft 505, and the axial through hole 515 of the stop valve joint end corresponds to the axial hexagonal through hole 516 of the movable connecting shaft, and the pressure gauge joint end 501 is a hollow stepped columnar structure. The present invention has a structure in which the inner diameter of the pressure gauge joint end 501 corresponds to the outer diameter of the joint connecting shaft 505, a radial through hole 517 of the stop valve joint end is radially provided in the stop valve joint end 502, a three-way valve body three-way end channel 518 is provided in the three-way valve body 500, the radial through hole 517 of the stop valve joint end corresponds to the three-way end channel 518 of the three-way valve body, and the through hole in the detection joint end 503 corresponds to the three-way end channel 518 of the three-way valve body; a detection joint sealing body groove is circumferentially provided in the inner wall of one end of the detection joint sealing body 507 close to the inner end cover 513 of the detection joint, and a detection joint sealing body end surface O-ring 506 is provided in the detection joint sealing body groove, and the detection joint sealing body end surface O-ring 506 is provided between the detection joint sealing body 507 and the detection joint sealing body. The inner wall of the head back cap 504 is provided with four parallel three-way valve body grooves along the axial direction, and the four three-way valve body grooves are provided with valve body straight-through end O-rings 510, two valve body straight-through end O-rings 510 are arranged between the three-way valve body 500 and the stop valve live connection end 502, and the other two valve body straight-through end O-rings 510 are arranged between the three-way valve body 500 and the live connection shaft 505; the outer wall of the detection joint sealing body 507 close to one end of the detection joint valve core 508 is provided with a detection joint sealing body outer groove along the circumferential direction, and the detection joint sealing body outer end face O-ring 511 is arranged in the detection joint sealing body outer groove, and the detection joint sealing body outer end face O-ring 511 is arranged between the detection joint sealing body 507 and the detection joint end 503;An outer groove of the detection joint end 503 is provided along the circumferential direction on one end surface close to the three-way valve body 500, and an O-ring 512 of the detection joint end surface is provided in the outer groove of the detection joint end. The O-ring 512 of the detection joint end surface is provided between the detection joint end 503 and the three-way valve body 500. For example; Figure 5 As shown, a first step hole 5031, a second step hole 5032 and a third step hole 5033 are provided in the detection joint end 503. The first step hole 5031 limits the detection joint sealing body 507, the second step hole 5032 limits the detection joint valve core 508, and the third step hole 5033 limits the spring 509.

Claims

1. An online detection device for pipeline pressure of water conservancy irrigation wells, characterized in that: It comprises a high-pressure connecting pipe (3), one end of the high-pressure connecting pipe (3) is connected to a pressure measuring three-way valve (5), a second connecting end of the pressure measuring three-way valve (5) is connected to a common pressure gauge (4), a third connecting end of the pressure measuring three-way valve (5) is connected to a water conservancy irrigation pipe through a pipe, a pipe stop valve (6) is provided on the pipe between the pressure measuring three-way valve (5) and the water conservancy irrigation pipe, the other end of the high-pressure connecting pipe (3) is connected to a manual liquid pressure pump (2), and a precision pressure gauge (1) is connected to the manual liquid pressure pump (2); The pressure measuring three-way valve (5) comprises a stop valve joint end (502), one end of the stop valve joint end (502) is connected to a water conservancy irrigation pipeline through a pipeline, the other end of the stop valve joint end (502) is sleeved with a joint shaft (505) on its outer wall, a pressure gauge joint end (501) is sleeved on a portion of the outer wall of the joint shaft (505), the pressure gauge joint end (501) is connected to the common pressure gauge (4), the middle outer wall of the stop valve joint end (502) and the outer wall of the joint shaft (505) are sleeved with a three-way valve body (500), the three-way valve body The outer wall of (500) contacts the flexible joint end (501) of the pressure gauge, and the inner wall of the three-way end of the three-way valve body (500) is fixedly connected with a detection joint end (503), and the detection joint end (503) is in the shape of a hollow stepped column. The inner edge of the detection joint end (503) is provided with a spring (509), a detection joint valve core (508), a detection joint sealing body (507) and a detection joint inner end cover (513) in sequence in the direction away from the three-way valve body (500). The outer wall of one end of the detection joint end (503) away from the three-way valve body (500) is provided with a detection joint back cap (504). The inner wall boss of the detection joint back cap (504) is inserted into the detection joint inner end cover (513) and the detection joint sealing body (507); the stop valve joint end (502) is a hollow step columnar structure, and an axial through hole (515) of the stop valve joint end is axially opened in the stop valve joint end (502); the movable connecting shaft (505) is a hollow step columnar structure, and an axial hexagonal through hole (516) of the movable connecting shaft is axially opened in the movable connecting shaft (505); the axial through hole (515) of the stop valve joint end is aligned with the axial hexagonal through hole (516) of the movable connecting shaft. Correspondingly, the pressure gauge joint end (501) is a hollow stepped columnar structure, the inner diameter of the pressure gauge joint end (501) corresponds to the outer diameter of the joint connection shaft (505), a radial through hole (517) of the stop valve joint end is radially opened in the stop valve joint end (502), a three-way valve body three-way end channel (518) is opened in the three-way valve body (500), the radial through hole (517) of the stop valve joint end corresponds to the three-way end channel (518) of the three-way valve body, and the through hole in the detection joint end (503) corresponds to the three-way end channel (518) of the three-way valve body.

2. The pipeline pressure online detection device for water conservancy irrigation wells according to claim 1 is characterized in that: The manual liquid pressure pump (2) comprises a pressure pump (202), the inlet end of the pressure pump (202) is connected to a pressure medium storage tank (206) via a pipeline, the outlet end of the pressure pump (202) is connected to a pressure regulator (205) via a pipeline, the outlet end of the pressure regulator (205) is connected to a first meter connection socket (201) and a second meter connection socket (203) via a pipeline, and the pressure medium storage tank (206) is connected to the pressure regulator (205) and the first meter connection socket (201) via a pipeline. ) and a second gauge connection socket (203), the first gauge connection socket (201) is connected to the precision pressure gauge (1), the second gauge connection socket (203) is connected to the high-pressure connecting pipe (3), a booster pump stop valve (204) is provided on the pipeline between the booster pump (202) and the pressure regulator (205), a pressure relief valve (207) is installed on the pipeline connected to the pressurized medium storage tank (206), and the pressure relief valve (207) is arranged in parallel with the booster pump stop valve (204).

3. The on-line detection device for pipeline pressure of water conservancy irrigation well according to claim 1 is characterized in that: The high-pressure connecting pipe (3) comprises a high-pressure hose (302), one end of which is fixedly connected to a high-pressure connecting pipe plane joint (301), the high-pressure connecting pipe plane joint (301) being connected to the manual liquid pressure pump (2), one end of which is fixedly connected to a high-pressure connecting pipe thimble joint (303), the high-pressure connecting pipe thimble joint (303) being connected to the pressure measuring three-way valve (5), and a thimble end face groove (304) is provided at the high-pressure connecting pipe thimble end face in the high-pressure connecting pipe thimble joint (303) along the end face diameter direction.

4. The pipeline pressure online detection device for water conservancy irrigation wells according to claim 1 is characterized in that: An inner wall of one end of the detection joint sealing body (507) close to the detection joint inner end cover (513) is provided with a detection joint sealing body inner groove along the circumferential direction, and an O-ring (506) on the end face of the detection joint sealing body is provided in the inner groove of the detection joint sealing body. The O-ring (506) on the end face of the detection joint sealing body is provided between the detection joint sealing body (507) and the inner wall boss of the detection joint back cap (504).

5. The on-line detection device for pipeline pressure of water conservancy irrigation well according to claim 1, characterized in that: The inner wall of the three-way valve body (500) is provided with four parallel three-way valve body grooves along the axial direction, and each of the four three-way valve body grooves is provided with a valve body straight-through end O-ring (510), two of the valve body straight-through end O-rings (510) are arranged between the three-way valve body (500) and the stop valve live connection end (502), and the other two of the valve body straight-through end O-rings (510) are arranged between the three-way valve body (500) and the live connection shaft (505).

6. The on-line detection device for pipeline pressure of water conservancy irrigation well according to claim 1, characterized in that: An outer wall of the detection joint sealing body (507) close to one end of the detection joint valve core (508) is provided with a detection joint sealing body outer groove along the circumferential direction, and an O-ring (511) on the outer end face of the detection joint sealing body is provided in the groove of the detection joint sealing body. The O-ring (511) on the outer end face of the detection joint sealing body is provided between the detection joint sealing body (507) and the detection joint end (503).

7. The on-line detection device for pipeline pressure of water conservancy irrigation well according to claim 1, characterized in that: An outer groove of the detection joint end is formed along the circumferential direction on an end surface of the detection joint end (503) close to the three-way valve body (500), and an O-ring (512) on the end surface of the detection joint end is provided in the outer groove of the detection joint end. The O-ring (512) on the end surface of the detection joint end is provided between the detection joint end (503) and the three-way valve body (500).

8. The pipeline pressure online detection device for water conservancy irrigation wells according to claim 1 is characterized in that: A first step hole (5031), a second step hole (5032) and a third step hole (5033) are provided in the detection joint end (503); the first step hole (5031) limits the detection joint sealing body (507); the second step hole (5032) limits the detection joint valve core (508); and the third step hole (5033) limits the spring (509).

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