Water pressure measuring device for water supply pipeline experiment

Abstract

The present application relates to a kind of water pressure measuring devices for water supply pipeline experiment, it includes outer cylinder, inner cylinder, air cylinder, drill driving assembly, sealing fixed component, pressure gauge and installation component, wherein, inner cylinder is pushed to the inside of outer cylinder by air cylinder, drill driving assembly is moved forward and contacts sealing fixed component with inner cylinder, when detecting, sealing fixed component is located in the inside of outer cylinder on water supply pipeline, water supply pipeline is opened, after detection is completed, the opening is plugged and fixed, outer cylinder is fixed on water supply pipeline by installation component, pressure gauge is fixed on outer cylinder.The device of the present application can be conveniently held and installed, can automatically carry out drilling, drainage, pressure measurement and other steps after installation, without manual operation of relevant experimental personnel, greatly reduce the technical requirements of relevant experimental personnel, and after water pressure measurement is completed, can automatically seal the drilling, so that the device can be removed and reused, to obtain multiple experimental measurement data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water supply pipeline detection, and particularly relates to a water pressure measuring device for water supply pipeline experiment. BACKGROUND

[0002] After the installation of the water supply pipeline, the pipeline system should be subjected to pressure experiment according to the design requirements. The experiment can be divided into strength experiment for checking the mechanical properties of the pipeline, tightness experiment for checking the connection quality of the pipeline, vacuum experiment for checking the vacuum maintaining performance of the pipeline system, and leakage experiment based on fire safety consideration, etc. Most of the water supply pipelines only have strength experiment and tightness experiment, and the strength experiment and the tightness experiment of the pipeline system generally adopt water pressure experiment.

[0003] The pressure detection of the water supply pipeline is related to the installation quality of tap water, is an effective means for detecting the installation quality of tap water, and has specific specification requirements. The main specification standards are the related requirements in the current 'Building Water Supply and Drainage and Heating Engineering Construction Quality Acceptance Specification' GB50242-2002 and standards.

[0004] The pressure detection of the existing water supply pipeline is usually to set a pressure sensor in a pressure lead pipe communicated with the water supply pipeline, to detect the water pressure in the pressure lead pipe through the pressure sensor, so as to achieve the purpose of detecting the water supply pressure in the water supply pipeline. For example, the patent with the patent announcement number CN209559394U discloses a pressure detection device for water supply pipeline, which comprises a connecting pipe for communicating with the water supply pipeline, a pressure detection element for detecting the water pressure in the connecting pipe, and a pressure lead joint for installing the pressure detection element in the connecting pipe. One end of the pressure lead joint is supported on the outer side wall of the connecting pipe, the other end of the pressure lead joint is inserted into the through hole of the connecting pipe and extends into the connecting pipe, and the pressure detection element is installed in the pressure lead joint. The utility model sets up the connecting pipe, sets up the pressure lead joint on the connecting pipe, and installs the pressure detection element in the pressure lead joint, so that the pressure detection element can measure the water pressure in the connecting pipe. When in use, the connecting pipe is connected with the water supply pipeline, so that the water in the connecting pipe is in a flowing state, thereby avoiding the water in the connecting pipe from being static and frozen, so that the water pressure in the water supply pipeline can still be accurately measured in the northern cold region or in the cold climate environment in winter.

[0005] However, the installation of the pressure lead pipe needs multiple steps such as opening, welding, assembling detection instrument, leading flow, which has high technical requirements for the related experiment personnel, and is time-consuming and laborious to operate, and cannot quickly perform multiple experiments to obtain multiple comparison data to accurately calculate the experimental data; and in the actual detection process, the connecting pipe needs to be connected with the water supply pipeline first, which is only suitable for the water supply pipeline with a matching connecting pipe, and cannot be applied to any pipe diameter pipeline, and the flow switch needs to be disconnected, opened and disconnected before, during and after detection, which is complex and time-consuming.

[0006] Therefore, in view of the above technical problems, the present application provides a water pressure measuring device for water supply pipeline experiment. SUMMARY

[0007] (1) Technical problems to be solved

[0008] In view of the above shortcomings and deficiencies of the prior art, the present application provides a water pressure measuring device for water supply pipeline experiment, which solves the technical problems of high technical requirements for related experiment personnel and time-consuming and laborious operation in water pressure measurement.

[0009] (2) Technical solutions

[0010] In order to achieve the above purpose, the main technical solutions adopted by the present application include:

[0011] A water pressure measuring device for water supply pipeline experiment includes an outer cylinder, an inner cylinder, an air cylinder, a drill driving assembly, a sealing and fixing assembly, a pressure gauge and a mounting assembly, wherein one end of the outer cylinder is open, the open end is mounted and fixed on the water supply pipeline to be tested through the mounting assembly, and the mounting assembly is fixed on the outer cylinder; the other end of the outer cylinder is sleeved with the inner cylinder, the air cylinder is arranged between the outer cylinder and the inner cylinder, and the inner cylinder is pushed into the inner cylinder of the outer cylinder through the air cylinder; the drill driving assembly is fixed on the outer end of the inner cylinder, and the drill driving assembly is used to drive the sealing and fixing assembly with the advancement of the inner cylinder; the sealing and fixing assembly is a replaceable assembly arranged in the outer cylinder, and the sealing and fixing assembly is used to open the water supply pipeline to be tested, and the opening of the water supply pipeline to be tested is sealed and fixed after detection; the pressure gauge is fixed on the outer cylinder, and the pressure gauge is connected and used to detect the water pressure in the sealed cavity formed by the outer cylinder, the inner cylinder and the water supply pipeline to be tested.

[0012] The water pressure measuring device for water supply pipeline experiment as described above, preferably, the sealing fixing assembly comprises a sealing plate, a drilling shaft, a positioning column and a rubber pad, wherein the drilling shaft is fixedly connected with the sealing plate in a "T" structure, the front end and the periphery of the drilling shaft are provided with helical threads for hole opening, the front end of the drilling shaft is provided with a flow guide hole, the front end opening of the flow guide hole is arranged at the front end of the drilling shaft, and the tail end opening of the flow guide hole is arranged at the side wall of the drilling shaft; the rubber pad is equal in size to the sealing plate and can be tightly attached to the sealing plate, the other side of the rubber pad is arc-shaped and is adapted to the pipeline to be measured and can be tightly attached to the surface of the pipeline to be measured, the rubber pad is provided with a positioning hole adapted to the positioning column, the top end of the positioning column is fixedly provided with a welding block, the depth of the positioning hole is higher than the height of the positioning column and the welding block, the rubber pad can be deformed under the extrusion of the sealing plate, the sealing plate is in contact with the welding block, the welding block is melted and fixedly welded to the sealing plate after being electrified, and the distance from the "T" shaped opening of the flow guide hole to the sealing plate is greater than the sum of the thickness of the pipeline to be measured and the thickness of the rubber pad, and the axial length of the flow guide hole along the drilling shaft is greater than the sum of the thickness of the pipeline to be measured and the thickness of the rubber pad.

[0013] The water pressure measuring device for water supply pipeline experiment as described above, preferably, the rubber pad is provided with four or more groups of positioning holes and is symmetrically arranged at the center of the drilling shaft on the sealing plate; the flow guide hole is arranged in an inverted "T" shape; and the welding block is further fixedly connected with a conductive sheet, so that the welding block can be tightly combined with the sealing plate after being electrified.

[0014] The water pressure measuring device for water supply pipeline experiment as described above, preferably, the drilling driving assembly comprises a driving motor, a positioning plug and a rotating shaft, the driving motor is fixedly connected to the outer end of the inner cylinder body, the central axis of the driving motor is coincident with the central axis of the inner cylinder body, a ball bearing is fixedly arranged on one side of the inner cylinder body, one end of the rotating shaft penetrates through the ball bearing and is fixedly connected with the output shaft of the driving motor, the other end of the rotating shaft is fixedly connected with the positioning plug, and the positioning plug is adapted to be clamped with the positioning slot arranged on the sealing plate.

[0015] The water pressure measuring device for water supply pipeline experiment as described above, preferably, the positioning plug is a metal plate with magnetism, and the driving motor is a 110 / 130 three-phase stepping motor.

[0016] The water pressure measuring device for water supply pipeline experiment as described above, preferably, the mounting assembly comprises a fixing seat, a threaded rod, a nut and a clamping plate, the fixing seat is fixedly arranged on the outer cylinder body, the threaded rod is connected with the fixing seat, the clamping plate is composed of two vertical metal plates and an arc-shaped metal plate, wherein the arc-shaped part is adapted to the surface of the pipeline to be measured, the two vertical metal plates are provided with through holes matched with the threaded rod for tensioning, and the nut is used for fastening the clamping plate and the threaded rod.

[0017] The water pressure measuring device used in the water supply pipeline experiment as described above is preferably provided with a fixing seat on the outer cylinder, the cylinder is fixedly connected to the fixing seat, a connecting plate is fixedly provided on the inner cylinder, the telescopic end of the cylinder is fixedly connected to the connecting plate, two groups of cylinders are provided, and two groups of corresponding fixing seats and connecting plates are also provided, and the two groups of fixing seats are symmetrically arranged about the horizontal center line of the outer cylinder.

[0018] In the water pressure measuring device for water supply pipeline testing as described above, preferably, the open end of the outer cylinder is provided with a sealing gasket that is compatible with the water supply pipeline to be tested.

[0019] The water pressure measuring device used in the water supply pipeline experiment as described above is preferably provided between the outer cylinder and the inner cylinder. The sealing component is annular, and the inner annular surface of the sealing component is in close contact with the outer wall of the inner cylinder. The outer annular surface of the sealing component is in close contact with the inner wall of the outer cylinder, which can ensure the sealing of the inner cylinder when it telescopes inside the outer cylinder.

[0020] In the water pressure measuring device for water supply pipeline testing as described above, preferably, the material of the sealing component or the sealing gasket is nitrile rubber, blue polyurethane or fluororubber.

[0021] (3) Beneficial effects

[0022] The beneficial effects of the present invention are:

[0023] The water pressure measuring device for water supply pipeline experiments of the present invention adopts a convenient clamping installation. After installation, it can automatically perform steps such as drilling, drainage, and pressure measurement without the need for manual operation by relevant experimenters, which greatly reduces the technical requirements for relevant experimenters. After the water pressure measurement is completed, the drill hole can be automatically sealed. Only the sealing fixing component needs to be replaced, so that the device can be disassembled and reused to obtain multiple sets of experimental measurement data. The device is applicable to water supply pipelines of various diameters and has a wide spectrum of practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a preferred structure of a water pressure measuring device for water supply pipeline experiments according to the present invention;

[0025] Figure 2 for Figure 1 Exploded diagram of the water pressure measuring device used in the water supply pipeline experiment;

[0026] Figure 3 This is a state diagram of the tapping shaft when measuring with a water pressure measuring device in a water supply pipeline experiment according to the present invention;

[0027] Figure 4 The water pressure measuring device for water supply pipeline experiment of the present invention Figure 3 Enlarged view of point A in the middle

[0028] Figure 5 The state diagram after the water pressure measuring device for water supply pipeline experiment is detected and the sealing pipeline after the drilling shaft is attacked;

[0029] Figure 6 The front view cross-sectional schematic diagram of the feeding mechanism of the water pressure measuring device for water supply pipeline experiment is preferably fed;

[0030] Figure 7 The explosion diagram of the water pressure measuring device for water supply pipeline experiment is provided.

[0031]

Explanation of reference numerals

[0032] 1: outer cylinder;

[0033] 2: inner cylinder;

[0034] 3: air cylinder;

[0035] 4: drilling driving assembly;

[0036] 41: driving motor;

[0037] 42: positioning plug;

[0038] 5: water supply pipeline to be measured;

[0039] 6: fixed seat;

[0040] 7: threaded rod;

[0041] 8: nut;

[0042] 9: holding plate;

[0043] 10: pressure gauge;

[0044] 11: sealing plate;

[0045] 12: positioning column;

[0046] 13: rubber pad;

[0047] 14: drilling shaft;

[0048] 15: flow guide hole;

[0049] 16: positioning slot;

[0050] 17, rotating shaft;

[0051] 18: positioning hole;

[0052] 19: welding block;

[0053] 20: connecting plate;

[0054] 21: sealing assembly;

[0055] 22: through hole;

[0056] 23: gasket. DETAILED DESCRIPTION

[0057] For better explaining the present application, in order to be understood, the present application is described in detail by specific embodiments, combined with the drawings. Wherein, the term "comprising" or its variants such as "containing" or "including" and the like will be understood to include the stated element or component without excluding other elements or components.

[0058] The device provided by the present application comprises an outer cylinder, an inner cylinder, an air cylinder, a drill driving assembly, a sealing fixing assembly, a pressure gauge and a mounting assembly. The inner cylinder is pushed into the outer cylinder through the air cylinder. The drill driving assembly is arranged at the end of the inner cylinder. The drill driving assembly moves forward with the inner cylinder to contact the sealing fixing assembly. When detecting, the sealing fixing assembly is first fixed on the water supply pipeline. The inner part of the outer cylinder is opened to the water supply pipeline. After the detection is completed, the opening is plugged and fixed. The outer cylinder is fixed on the water supply pipeline through the mounting assembly. The pressure gauge is fixed on the outer cylinder to measure the pressure inside the outer cylinder. It adopts a convenient holding installation. By designing the sealing fixing assembly, the device can automatically perform drilling, drainage and pressure measurement after installation, without the need for manual operation of related experimental personnel, greatly reducing the technical requirements for related experimental personnel. After the water pressure measurement is completed, the drill hole can be automatically plugged and sealed, so that the device can be removed and reused to obtain multiple sets of experimental measurement data. Through the device, drilling, drainage and pressure measurement can be automatically performed, which well replaces the manual operation of related personnel in the prior art.

[0059] In order to better understand the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a clearer, more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0060] Example 1

[0061] A water pressure measuring device for water supply pipeline experiment, as shown in Figure 1 and Figure 2As shown, it includes an outer cylinder 1, an inner cylinder 2, a cylinder 3, a tapping drive assembly 4, a sealing and fixing assembly, a pressure gauge and a mounting assembly. The main body of the device is the outer cylinder 1 and the inner cylinder 2 for being sleeved inside it. One end of the outer cylinder 1 is set to be open, and the cross-section of the opening matches the surface of the water supply pipe 5 to be measured, and can be snapped onto the surface of the pipe to be measured; the other end of the outer cylinder 1 is sleeved with the inner cylinder 2, and a mounting assembly is provided on one side of the open end of the outer cylinder 1. The mounting assembly includes a fixing seat 6, a threaded rod 7, a nut 8 and a clamping plate 9. The open end of the outer cylinder 1 is fixed to the On the water supply pipe to be tested, the cylinder 3 is arranged between the outer cylinder 1 and the inner cylinder 2. The inner cylinder 2 is pushed into the inner part of the outer cylinder 1 by the action of the cylinder 3. The tapping drive assembly is fixedly arranged at the outer end of the inner cylinder 2. The tapping drive assembly is used to drive the sealing and fixing assembly. The sealing and fixing assembly is a replaceable assembly and is arranged in the outer cylinder. The sealing and fixing assembly is used to open a hole in the water supply pipe 5 to be tested. After the test is completed, the water supply pipe to be tested is sealed and fixed; the pressure gauge 10 is fixedly arranged on the outer cylinder. The pressure gauge 10 is connected and used to detect the pressure in the sealed cavity formed by the inner cylinder, the outer cylinder, and the water supply pipe 5 to be tested.

[0062] Specifically, such as Figure 3 As shown, the sealing and fixing assembly includes a sealing plate 11, a positioning column 12, a rubber pad 13, and a tapping shaft 14. The tapping shaft 14 is fixedly connected to the sealing plate 11 in a "T" structure. The end of the tapping shaft 14 is fixed to one side of the sealing plate 11. The outer periphery of the tapping shaft 14 is provided with a self-tapping spiral pattern. The front end of the tapping shaft is provided with an inverted "T"-shaped diversion hole 15. The distance between the T-shaped opening of the diversion hole 15 and the sealing plate is greater than the sum of the thickness of the pipeline to be tested and the thickness of the rubber pad 13. The axial length of the diversion hole 15 along the tapping shaft 14 is greater than the sum of the thickness of the pipeline to be tested and the thickness of the rubber pad 13. The tapping shaft 14 is provided with a self-tapping thread, which can automatically drill holes in the water supply pipeline when rotating at high speed. The interior of the tapping shaft 14 is provided with a diversion hole 15, which is a "T"-shaped channel. When one end of the tapping shaft 14 is tapped into the interior of the water supply pipeline, the diversion hole 15 can drain the water inside the water supply pipeline.

[0063] A positioning slot 16 is formed on the plate surface on the other side of the sealing plate 11 , and the positioning slot 16 is adapted to engage with a positioning insert 42 on the rotating shaft 17 of the tapping drive assembly.

[0064] The sealing plate 11 and the rubber pad 13 have the same horizontal area and can fit tightly with the rubber pad 13. The other side of the rubber pad 13 is arc-shaped and fits tightly with the pipe to be tested. Figure 4As shown, the rubber pad 13 is provided with positioning holes 18 matched with the positioning columns 12, the positioning holes 18 are provided in plurality, the plurality of positioning holes 18 can be arranged symmetrically along the center point of the corresponding sealing plate 11 of the rubber pad 13, the top end of the positioning column 12 is fixedly provided with a welding block 19, the depth of the positioning hole 18 is higher than the height of the positioning column 12 and the welding block 19.

[0065] In the detection, as shown in the figure, Figure 3 The positioning column 12 is first fixedly connected on the water supply pipeline 5 to be detected, the positioning column 12 can be provided in four groups, the four groups of positioning columns 12 are arranged symmetrically along the center of the rubber pad 13, in the process of assembling the rubber pad 13, the four groups of positioning holes 18 on the rubber pad 13 are aligned with the four groups of positioning columns 18, then the rubber pad 13 is pressed, so that the positioning columns 12 are respectively inserted into the positioning holes 18 on the rubber pad 13, and the rubber pad 13 is positioned and supported by the four groups of positioning columns 12. One end of the rubber pad 13 is arc-shaped, and one side of the arc-shaped surface of the rubber pad 13 is tightly attached to the surface of the water supply pipeline. The length of the positioning column 12 is less than the depth of the corresponding positioning hole 22, and in the natural state, the positioning column 12 and the welding block 19 are completely hidden in the inside of the positioning hole 22, but when the drill shaft 14 is completely drilled into the inside of the water supply pipeline, as shown in the figure, Figure 5 One side of the sealing plate 11 is tightly pressed with one side of the rubber pad 13, and the sealing plate 11 can be in contact with the welding block 19.

[0066] The positioning column 12 is fixedly provided with a welding block 19, and a conductive sheet is fixedly arranged on the central axis in the inside of the positioning column 2, the conductive sheet is provided with a pin for connecting an electric wire, and the pin part penetrates to the outside of the positioning column, the conductive sheet can be powered by connecting the electric wire, and the conductive sheet is fixedly connected with the welding block 19, the conductive sheet is used for electrifying the welding block 19, and after electrification, the welding block 19 will melt.

[0067] In the working process, the drill shaft 14 is only partially drilled into the water supply pipeline, and only needs to ensure that one end enters the inside of the water supply pipeline, but needs to control the other two outlets of the “T” channel to be located in the inside of the outer cylinder 1, so that the water in the inside of the water supply pipeline can be smoothly led out to the inside of the outer cylinder 1. After the test is completed, under the cooperation of the feeding mechanism and the drill driving assembly, the drill shaft 14 rotates, so that the sealing plate 11 is tightly attached to the rubber pad 13, until the sealing plate 11 is in contact with the welding block 19 on the positioning column 12, as shown in the figure, Figure 5 The “T” channel on the drill shaft 14 is completely immersed in the pipeline, the conductive sheet connected to the welding block 19 is connected and welded to the positive electrode of the power supply, the sealing plate 11 is connected and welded to the negative electrode of the power supply, after electrification, the welding block 19 will melt, so that the sealing plate 11 is welded and fixed with the positioning column 12, and the opening on the water supply pipeline is plugged.

[0068] As shown in the figure, Figure 6As shown, the outer cylinder 1 is installed on the water supply pipeline 5 to be measured, and the outer cylinder 1 is fixedly provided with a fixed seat 6, and the air cylinder 3 is fixedly connected to the fixed seat 6. The fixed seat 6 is fixedly provided on the outer cylinder 1, and two groups of fixed seats 6 are symmetrically arranged about the horizontal center line of the outer cylinder 1. The inner cylinder 2 is fixedly provided with two groups of connecting plates 20, and the telescopic end of the air cylinder 3 is fixedly connected to the connecting plate 20.

[0069] The inner cylinder 2 is provided with a drilling driving assembly 4, which includes a driving motor 41, a positioning plug 42 and a rotating shaft 17. The driving motor 41 is fixedly installed at the outer end of the inner cylinder 2, and the center axis of the driving motor 41 coincides with the center axis of the inner cylinder 2. The specific model of the driving motor 41 can be 110 / 130 three-phase stepping motor. One side of the inner cylinder 2 is fixedly connected with a ball bearing, and one end of the rotating shaft 17 penetrates through the ball bearing and is fixedly connected with the output shaft of the driving motor 41. The positioning plug 42 is fixedly connected to the other end of the rotating shaft 17 by welding, and the positioning plug 42 is a magnetic metal plate. The positioning plug 42 is adaptively connected with the positioning slot 16 on the sealing plate 11 in the sealing and fixing assembly. The positioning plug 42 can be inserted into the positioning slot 16 and can be pre-adsorbed in the positioning slot 16, thereby achieving the fixing and limiting connection of the drilling shaft 14. During the rotation of the positioning plug 42, the drilling shaft 14 can be driven to rotate, thereby automatically drilling the drilling hole on the water supply pipeline.

[0070] Two groups of air cylinders 5 are installed on the two groups of fixed seats 6, respectively. The two groups of air cylinders 5 can simultaneously push and pull the connecting plates 4 on the inner cylinder 2, thereby driving the inner cylinder 2 to telescope in the outer cylinder 1. When the inner cylinder 2 slides and contracts in the outer cylinder 1, a drilling force is provided to the drilling shaft 14 to drill the water supply pipeline, so that the high-speed rotating drilling shaft 14 can automatically drill into the water supply pipeline, thereby automatically drilling the hole.

[0071] As shown in Figure 6 and Figure 7 The inner side wall of the outer cylinder 1 is fixedly connected with a sealing assembly 21, which is annular. The inner ring surface of the sealing assembly 21 is tightly attached to the outer wall of the inner cylinder 2, and the outer ring surface of the sealing assembly 21 is tightly attached to the inner wall of the outer cylinder 1. During the sliding and telescoping of the inner cylinder 2 in the outer cylinder 1, the sealing assembly 21 can ensure the sealing between the outer cylinder 1 and the inner cylinder 2, thereby forming a sealed space between the outer cylinder 1 and the inner cylinder 2 for water pressure measurement.

[0072] Preferably, the material of the sealing assembly 21 can be one of nitrile rubber, blue polyurethane or fluorine rubber. In this embodiment, the sealing assembly 21 preferably selects the fluorine rubber sealing ring which has good sealing performance, small motion friction resistance and is suitable for various motion modes, thereby ensuring the sealing performance of the inner cylinder 2 during the telescoping motion in the outer cylinder 1.

[0073] As shown in Figure 2 and Figure 7 , the pressure gauge 10 is installed on the outer cylinder 1 for water pressure measurement. When one end of the drill shaft 14 is drilled into the water supply pipeline, the water inside the pipeline will be led out through the flow hole 15 and quickly fill the sealed space inside the outer cylinder 1 and the inner cylinder 2. At this time, the water pressure inside the sealed space of the outer cylinder 1 and the inner cylinder 2 is the same as the water pressure inside the water supply pipeline, and the pressure gauge 10 installed on the outer cylinder 1 can directly detect the internal water pressure and read the water pressure data in real time, thereby realizing the measurement of water pressure.

[0074] Among them, it should be noted that when reading, as water is introduced into the outer cylinder 1 and the inner cylinder 2, the pressure inside the outer cylinder 1 and the inner cylinder 2 gradually increases, and the data read after the water pressure stabilizes is valid data.

[0075] The outer cylinder 1, the inner cylinder 2 and the air cylinder 3 constitute a feeding mechanism for pushing the drill shaft 14 to drill holes on the water supply pipeline to be measured.

[0076] As shown in Figure 2 , the installation assembly includes a fixed seat 6, a threaded rod 7, a nut and a clamping plate 9. The fixed seat is fixed on the outer cylinder 1, the threaded rod 7 is connected to the fixed seat, and the clamping plate 9 is composed of two vertical metal plates and an arc-shaped metal plate. The arc-shaped part is used to clamp the surface of the water supply pipeline, and the two vertical metal plates are used to cooperate with the threaded rod 7 to tighten. The clamping plate 9 can tightly fix the outer cylinder 1 on the water supply pipeline, and the fixed seat 6 is fixedly connected with the threaded rod 7. The clamping plate 9 is provided with two groups of through holes 22, one end of the threaded rod 7 penetrates through the through holes 22, and the threaded rod 7 is screwed with the nut 8. The outer cylinder 1 is fixed with a sealing gasket 15 at one end clamped with the water supply pipeline.

[0077] Make two groups of threaded rods 7 respectively penetrate through two groups of through holes 22 on the clamping plate 9, and then use the nut 8 to push the clamping plate 9, so that the clamping plate 9 is gradually clamped on the water supply pipeline. At this time, the threaded rod 7 will pull the outer cylinder 1, so that the outer cylinder 1 is tightly fixed on the water supply pipeline. In addition, the open end of the outer cylinder 1 is provided with a sealing gasket 23, which can ensure the sealing of the joint between the water supply pipeline and avoid water leakage.

[0078] In this embodiment, after the water pressure detection and measurement is completed, as shown in Figure 5As shown, under the cooperation of the feeding mechanism and the drilling drive assembly, the drilling shaft 14 is fully drilled into the inside of the water supply pipeline, at this time one end of the sealing plate 11 will be closely attached to the rubber pad 13 and a certain compression will be generated on the rubber pad 13, so that the thickness of the rubber pad 13 is reduced, at this time the sealing plate 11 will be in contact with the welding block 19 on the positioning column 12, and the drilling hole can be directly sealed through the rubber pad 13 and the sealing plate 11, and the pre-plugging of the drilling hole is completed.

[0079] In addition, after the outer cylinder body 1 is removed, the positive electrode of the welding power supply is connected to the conductive sheet, the negative electrode of the welding power supply is connected to the sealing plate 11, after power-on, the welding block 19 will melt, so as to realize the welding and fixation between the positioning column 12 and the sealing plate 11, and then the sealing plate 11 is permanently fixed on the water supply pipeline, and the permanent sealing of the opening is completed.

[0080] The method for using the device: in use, four groups of positioning columns 12 are pre-welded and fixed on the water supply pipeline, then four groups of positioning holes 18 on the rubber pad 13 are aligned with the four groups of positioning columns 12, and the rubber pad 13 is pressed to make the rubber pad 13 closely attached to the water supply pipeline, and the assembly of the rubber pad 13 is completed; then the sealing plate 11 on one side of the drilling shaft 14 is inserted and installed on the rotating shaft 17, and the drilling shaft 14 is aligned with the center of the rubber pad 13, and then two groups of threaded rods 7 are respectively penetrated through two groups of through holes 12 on the clamping plate 9, and then the clamping plate 9 is pushed by the nut 8, so that the clamping plate 9 is gradually clamped on the water supply pipeline, at this time the threaded rod 7 pulls the outer cylinder body 1, so that the outer cylinder body 1 is tightly fixed on the water supply pipeline, and the installation of the outer cylinder body 1 and the inner cylinder body 2 is completed.

[0081] Then, the air cylinder 3 is started, the air cylinder 3 pulls the inner cylinder body 2, so that the inner cylinder body 2 shrinks into the inside of the outer cylinder body 1, until the drilling shaft 14 is in contact with the water supply pipeline and is tightly pressed, at this time the driving motor 41 is started, the driving motor 41 drives the drilling shaft 14 to rotate at high speed, the drilling shaft 14 will automatically drill the opening on the water supply pipeline, but after one end of the drilling shaft 14 enters the inside of the water supply pipeline, the driving motor 41 and the air cylinder 3 are stopped, and the water in the inside of the water supply pipeline is introduced into the inside of the outer cylinder body 1 and the inner cylinder body 2 through the flow guide hole 15, after the water pressure in the inside of the outer cylinder body 1 and the inner cylinder body 2 is stable, the water pressure in the inside of the outer cylinder body 1 and the inner cylinder body 2 is equal to the water pressure in the inside of the water supply pipeline at this time, the data on the pressure gauge 10 is read and recorded, and the water pressure in the inside of the water supply pipeline at the measurement position can be measured.

[0082] Finally, the driving motor 41 and the cylinder 3 are started at the same time, so that the tapping shaft 14 is completely tapped into the water supply pipe. At this time, the sealing plate 11 will be in close contact with the rubber pad 13 and compress the rubber pad 13 to produce a certain amount of deformation. The sealing plate 11 will contact the welding block 19 on the positioning column 12. Then the outer cylinder 1 and the inner cylinder 2 are removed, and the positive pole of the welding power supply is connected through the conductive sheet, and the sealing plate 11 is connected to the negative pole of the welding power supply. After power is turned on, the welding block 19 will melt, thereby realizing the welding fixation between the positioning column 12 and the sealing plate 11, and then the sealing plate 11 will be permanently fixed on the water supply pipe, completing the permanent sealing of the opening.

[0083] After power off, unscrew the nut 8, open the clamping plate 9, and the test is complete. When the next test is carried out, a new sealing and fixing assembly is taken out for the next test.

[0084] Example 2

[0085] This embodiment is based on the embodiment 1, and is different in that the installation component includes a fixing seat, a clip, and a clamping plate. The fixing seat is provided with a clip that is clamped with the clamping plate. For example, the fixing seat is provided with a protruding clip, and the clamping plate is provided with a groove that is clamped with the protrusion.

[0086] In the description of the present invention, it should be understood that, in the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0087] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0088] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0089] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an embodiment", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0090] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can modify, modify, replace and modify the above-described embodiments within the scope of the present application.

Claims

1. A water pressure measuring device for water supply pipeline testing, characterized in that: It includes an outer cylinder, an inner cylinder, a cylinder, a tapping drive assembly, a sealing and fixing assembly, a pressure gauge and a mounting assembly, wherein one end of the outer cylinder is set to be open, and the open end is mounted and fixed on the water supply pipe to be tested by the mounting assembly, and the mounting assembly is fixedly arranged on the outer cylinder; the inner cylinder is sleeved on the other end of the outer cylinder, and the cylinder is arranged between the outer cylinder and the inner cylinder, and the inner cylinder is pushed into the interior of the outer cylinder by the cylinder; the tapping drive assembly is fixedly arranged on the outer end portion of the inner cylinder, and the tapping drive assembly is used to drive the sealing and fixing assembly as the inner cylinder is pushed forward; the sealing and fixing assembly is a replaceable assembly, which is arranged in the outer cylinder, and the sealing and fixing assembly is used to open a hole in the water supply pipe to be tested, and after the test is completed, the hole in the water supply pipe to be tested is sealed and fixed, and the pressure gauge is fixedly arranged on the outer cylinder, and the pressure gauge is connected and used to detect the water pressure in the sealed cavity formed by the outer cylinder, the inner cylinder and the pipe to be tested; The sealing and fixing assembly includes a sealing plate, a tapping shaft, a positioning column and a rubber pad, wherein the tapping shaft and the sealing plate are fixedly connected in a "T" structure, the front end and the periphery of the tapping shaft are provided with spiral patterns for opening holes, the front end of the tapping shaft is provided with a guide hole, the front end opening of the guide hole is provided at the front end of the tapping shaft, and the end opening of the guide hole is provided at the side wall of the tapping shaft; the rubber pad is the same size as the sealing plate and can fit tightly with the sealing plate, the other side of the rubber pad is in an arc shape to adapt to the pipeline to be tested, and can fit tightly with the surface of the pipeline to be tested, The positioning post is fixedly connected to the water supply pipe to be tested; a positioning hole adapted to the positioning post is provided on the rubber pad, a welding block is fixedly provided on the top of the positioning post, the depth of the positioning hole is higher than the height of the positioning post and the welding block, the rubber pad can be deformed by being squeezed by the sealing plate, the sealing plate contacts the welding block, the welding block melts and is welded to the sealing plate after being energized, the distance between the position of the upper end opening of the diversion hole and the sealing plate is greater than the sum of the thickness of the pipe to be tested and the thickness of the rubber pad, and the axial length of the diversion hole along the tapping axis is greater than the sum of the thickness of the pipe to be tested and the thickness of the rubber pad.

2. The measuring device according to claim 1, wherein The rubber pad is provided with multiple groups of positioning holes, which are symmetrically arranged around the tapping axis on the corresponding sealing plate; the guide hole is set as an inverted "T" structure; the welding block is also fixedly connected to a conductive sheet. After power is applied, the welding block melts and can be tightly combined with the sealing plate.

3. The measuring device according to claim 1, wherein The tapping drive assembly drives a motor, a positioning plug and a rotating shaft. The driving motor is fixedly connected to the outer end of the inner cylinder. The axis of the central shaft of the driving motor coincides with the central axis of the inner cylinder. A ball bearing is fixedly provided on one side of the inner cylinder. One end of the rotating shaft passes through the ball bearing and is fixedly connected to the output shaft of the driving motor. The other end of the rotating shaft is fixedly connected to the positioning plug. The positioning plug can be adapted and engaged with the positioning slot provided on the sealing plate.

4. The measuring device according to claim 3, wherein The positioning plug is a magnetic metal plate, and the driving motor is a 110 / 130 three-phase stepping motor.

5. The measuring device according to claim 1, wherein The mounting assembly includes a fixing seat, a threaded rod, a nut and a clamping plate. The fixing seat is fixed on the outer cylinder, the threaded rod is connected to the fixing seat, and the clamping plate is composed of two vertical metal plates and an arc-shaped metal plate, wherein the arc-shaped part is used to adapt to the surface of the water supply pipe to be tested. The two vertical metal plates are provided with through holes for tightening with the threaded rod, and the nut is used to tighten the clamping plate and the threaded rod.

6. The measuring device according to claim 1, wherein A fixing seat is provided on the outer cylinder, and the cylinder is fixedly connected to the fixing seat. A connecting plate is fixedly provided on the inner cylinder, and the telescopic end of the cylinder is fixedly connected to the connecting plate. There are two groups of cylinders, and two groups of corresponding fixing seats and connecting plates are also provided. The two groups of fixing seats are symmetrically arranged about the horizontal center line of the outer cylinder.

7. The measuring device according to claim 1, wherein The open end of the outer cylinder is provided with a sealing gasket which is adapted to the water supply pipe to be tested.

8. The measuring device according to claim 1, wherein A sealing assembly is also provided between the outer cylinder and the inner cylinder. The sealing assembly is annular, and the inner annular surface of the sealing assembly is in close contact with the outer wall of the inner cylinder, and the outer annular surface of the sealing assembly is in close contact with the inner wall of the outer cylinder, which can ensure the sealing of the inner cylinder when it telescopes inside the outer cylinder.

9. The measuring device according to claim 8, wherein The material of the sealing component is nitrile rubber, blue polyurethane or fluororubber.

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