CN210690273U - PCCP steel cylinder pressure-bearing test device - Google Patents
PCCP steel cylinder pressure-bearing test device Download PDFInfo
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- CN210690273U CN210690273U CN201921739389.6U CN201921739389U CN210690273U CN 210690273 U CN210690273 U CN 210690273U CN 201921739389 U CN201921739389 U CN 201921739389U CN 210690273 U CN210690273 U CN 210690273U
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Abstract
The utility model relates to a pressure testing instrument technical field especially relates to a PCCP steel cylinder pressure-bearing test device. This PCCP steel cylinder pressure-bearing test device includes: the cylinder component is arranged inside the steel cylinder and can form a sealed test cavity with the steel cylinder; the water outlet of the pressurizing and pumping assembly is communicated with the liquid through port of the test cavity; an inlet of the automatic exhaust valve is communicated with an overflow port of the test cavity through a first pipeline; the inlet of the first valve is communicated with the first pipeline. This PCCP steel cylinder pressure-bearing test device has liquid to flow out when the export of first valve, closes first valve, can enough continue to exhaust through automatic discharge valve, can also avoid liquid to flow out external in automatic exhaust to guarantee the leakproofness of experimental cavity, improve the pressure stability of carrying out the pressurization test in-process to the steel cylinder.
Description
Technical Field
The utility model relates to a pressure testing instrument technical field especially relates to a PCCP steel cylinder pressure-bearing test device.
Background
The Prestressed Concrete Cylinder Pipe (PCCP) is a water pipe which is made by winding circumferential prestressed steel wires on a high-strength concrete pipe core with a steel cylinder and spraying a compact cement mortar protective layer on the prestressed steel wires. The steel cylinder is one of the core components of the PCCP, and each section of the steel cylinder of the PCCP is qualified through the hydraulic test so as to ensure that the PCCP pipe body is free from water seepage and water leakage.
However, the existing hydraulic pressure testing machine adopts a manual control mode, a plurality of manual valves are controlled by manual operation in the testing process, and particularly, the exhaust time before water injection and pressurization is not accurately controlled, so that the air in a water injection cavity is not discharged timely, the unstable water pressure condition is easily caused when the water injection cavity is pressurized, and the accuracy of a pressure testing result of a steel cylinder is influenced.
Therefore, this technical scheme provides a PCCP steel cylinder pressure-bearing test device that can be automatic with the air clean of water injection intracavity discharge.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can be with the clean PCCP steel cylinder pressure-bearing test device of air discharge in the water injection intracavity.
In order to achieve the above object, the present invention provides the following technical solutions;
based on above-mentioned purpose, the utility model provides a PCCP steel cylinder pressure-bearing test device, include:
the cylinder component is arranged inside the steel cylinder to be tested and can form a sealed test cavity with the steel cylinder to be tested;
a water outlet of the pressurizing pumping assembly is communicated with a liquid through port of the test cavity;
an inlet of the automatic exhaust valve is communicated with an overflow port of the test cavity through a first pipeline;
and the inlet of the first valve is communicated with the first pipeline.
In any of the above technical solutions, optionally, the pressurizing pumping assembly includes a pressurizing water pump and a second valve, an outlet of the second valve is communicated with the liquid inlet of the test chamber, and an outlet of the pressurizing water pump is communicated with an inlet of the second valve.
In any of the above technical solutions, optionally, the pressurizing pumping assembly further includes a check valve, an inlet of the check valve is communicated with an outlet of the pressurizing water pump, and an outlet of the check valve is communicated with an inlet of the second valve.
In any of the above technical solutions, optionally, the hydraulic pumping assembly further includes:
and the inlet of the third valve is communicated between the outlet of the second valve and the liquid through port of the test cavity, and the outlet of the third valve is communicated with the outside.
In any of the above technical solutions, optionally, the first valve, the second valve, and the third valve are all electric valves;
the PCCP steel cylinder pressure-bearing test device further comprises a control system and a flow switch, wherein the flow switch is arranged at an outlet of the first valve;
the first valve, the second valve, the third valve and the flow switch are respectively electrically connected with the control system.
In any of the above technical solutions, optionally, the PCCP steel cylinder pressure-bearing test device further includes a pressure sensor and a frequency converter;
the measuring end of the pressure sensor is communicated with the interior of the test cavity; the frequency converter is electrically connected with the pressurized water pump so as to adjust the pumping flow of the pressurized water pump through the frequency converter; the frequency converter and the pressure sensor are respectively electrically connected with the control system so as to adjust the output power and the output frequency of the frequency converter according to the water pressure detected by the pressure sensor.
In any of the above solutions, optionally, the cartridge assembly includes a cartridge body, a base, a first sealing member, and a mounting ring;
the cylinder body and the mounting ring are both arranged on the base, the inner ring of the mounting ring is sleeved on the bottom of the cylinder body, the steel cylinder socket end of the steel cylinder to be tested is sleeved on the outer ring of the mounting ring, and the steel cylinder socket end of the steel cylinder to be tested is sleeved on the top of the cylinder body;
the PCCP steel cylinder pressure-bearing test device also comprises a sealing assembly, wherein the sealing assembly is detachably arranged between the steel cylinder socket end of the steel cylinder to be tested and the cylinder body; the first sealing member is disposed between the steel cylinder female end and the mounting ring; the cylinder body, the mounting ring, the base, the steel cylinder to be tested and the sealing assembly can enclose the test cavity.
In any of the above technical solutions, optionally, the sealing assembly includes a hollow inner tube, a second sealing member, a two-position three-way solenoid valve, and a gas compressor;
the hollow inner tube is arranged at the top of the cylinder body, the second sealing member is sleeved on the outer ring of the hollow inner tube, and the two-position three-way electromagnetic valve is communicated with the gas compressor and the inside of the hollow inner tube;
the one-position passage of the two-position three-way electromagnetic valve can enable compressed gas to enter the hollow inner tube from the gas compressor; and the other position passage of the two-position three-way electromagnetic valve can release compressed gas from the inside of the hollow inner tube to the outside.
In any of the above technical solutions, optionally, the cylinder assembly further includes a cover plate and a support ring, and the PCCP steel cylinder pressure-bearing test apparatus further includes a guide;
the lid is covered and is established the top of barrel body, be provided with on the lid the support ring, the guide sets up the top of support ring, the support ring the lid with the guide forms the opening orientation the mounting groove of steel cylinder socket end, the hollow inner tube of a tyre with the second seal member all sets up in the mounting groove, just the hollow inner tube of a tyre cover is established the outer lane of support ring.
In any of the above technical solutions, optionally, the control system includes a controller, an input device, and a display device;
the first valve, the second valve, the third valve, the flow switch, the input device and the display device are respectively electrically connected with the controller; the input device is used for inputting a control instruction and transmitting the control instruction to the controller.
Adopt above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model provides a PCCP steel cylinder pressure-bearing test device, including barrel subassembly, booster pump subassembly, automatic exhaust valve, first valve and flow indicator. The cylinder component and the steel cylinder can enclose a test cavity, and liquid can be pumped into the test cavity through the pressurizing pump component so as to pressurize the wall surface of the measuring cylinder. The first valve and the automatic exhaust valve can exhaust air together in the initial stage of liquid injection so as to improve the exhaust efficiency in the initial stage of water injection. Reach when the flow that flow indicator instructed and predetermine the flow, through closing first valve, can enough guarantee to continue to exhaust through automatic exhaust valve, but also can avoid liquid outflow external in automatic exhaust to guarantee the leakproofness of experimental cavity, thereby be favorable to improving the pressure stability at the in-process of carrying out the pressurization test to the steel cylinder.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a PCCP steel cylinder pressure-bearing test device provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a PCCP steel cylinder pressure-bearing test device provided by the embodiment of the utility model.
Icon: 1-a base; 2-a first sealing member; 3-a cylinder body; 4-a second sealing member; 5-hollow inner tube; 6-a guide; 7-steel cylinder female end; 8-a steel cylinder to be tested; 9-steel cylinder spigot end; 10-a proximity switch; 11-a third pipeline; 12-a two-position three-way solenoid valve; 13-a second conduit; 14-a check valve; 15-a second valve; 16-a third valve; 17-a first conduit; 18-a first valve; 19-automatic exhaust valve; 20-a pressure sensor; 21-a flow switch; 22-a pressurized water pump; 23-a test chamber; 24-a cover body; 25-a support ring; 26-a mounting ring; 30-a controller; 31-an input device; 32-a display device; 33-network device.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1 and 2, the present embodiment provides a PCCP steel cylinder pressure-bearing test device; fig. 1 is a schematic structural diagram of a PCCP steel cylinder pressure-bearing test device provided in this embodiment, and a partial cross-sectional view of the PCCP steel cylinder pressure-bearing test device is adopted in order to more clearly and intuitively express the structure of the PCCP steel cylinder pressure-bearing test device; fig. 2 is a schematic structural diagram of the PCCP steel cylinder pressure-bearing test device provided in this embodiment.
The PCCP steel cylinder pressure-bearing test device provided by the embodiment is used for testing the pressure-bearing capacity of the PCCP steel cylinder, the two ends of the steel cylinder are respectively a steel cylinder female end and a steel cylinder female end, and the steel cylinder female end of one steel cylinder is butted with the steel cylinder female end of the other steel cylinder in the using process, so that the two steel cylinders are connected to form a continuous PCCP pipeline.
Referring to fig. 1 and 2, the PCCP steel cylinder pressure-bearing test device provided by this embodiment includes a cylinder assembly, a pressurizing and pumping assembly, an automatic exhaust valve 19, and a first valve 18.
The barrel component is used for being arranged inside the steel cylinder to be tested 8 and can form a sealed experiment cavity with the steel cylinder to be tested 8, and the barrel component can play a role in fixedly supporting the steel cylinder to be tested 8.
The delivery port of the pressurizing pumping assembly is communicated with the liquid through port of the test cavity 23, and the pressurizing pumping assembly can inject pressurized liquid into the test cavity 23 through the liquid through port so as to adjust the liquid pressure in the pressure test cavity through the pressurizing pumping assembly, thereby adjusting the pressure applied to the wall surface of the steel cylinder 8 to be tested in the test process. Optionally, the liquid pumped by the pressurized pumping assembly into the test chamber 23 is water.
The inlet of the automatic exhaust valve 19 is communicated with the overflow port of the test cavity 23 through the first pipeline 17, and when the pressurizing pumping assembly pumps liquid into the test cavity 23, air in the test cavity 23 can be exhausted to the outside through the automatic exhaust valve 19. The automatic exhaust valve 19 is an existing automatic exhaust valve 19 which can only exhaust and can not discharge.
The inlet of the first valve 18 is connected to the first pipe 17, and when the first pipe 17 is filled with air in the section corresponding to the section between the inlet of the first valve 18 and the overflow of the test chamber 23, the first valve 18 is opened, so that the air in the test chamber 23 can be discharged to the outside through the first valve 18 and the automatic exhaust valve 19 at the same time.
After the test chamber 23 is filled with liquid, as the pumping assembly continues to pump liquid into the test chamber 23, the liquid flow in the section of the first pipeline 17 corresponding to the space between the inlet of the first valve 18 and the overflow port of the test chamber 23 gradually increases, and the flow in the first valve 18 also increases. When the liquid flows out from the outlet of the first valve 18, the characteristic that the test cavity 23 is filled with the liquid is obtained, and at this time, the first valve 18 can be closed to prevent the liquid in the test cavity 23 from continuously flowing out, so that the sealing performance of the test cavity 23 is ensured. Meanwhile, residual air in the first pipeline 17 is not discharged, and the automatic exhaust valve 19 is communicated with the first pipeline 17, so that the residual air in the first pipeline 17 can be completely exhausted through the automatic exhaust valve 19 along with the liquid pumping of the pressurizing pumping assembly to the test cavity 23.
That is to say, the operating principle of the PCCP steel cylinder pressure-bearing test device provided in this embodiment is: the first valve 18 and the pressurizing pumping assembly are opened, liquid is injected into the test cavity 23 through the pressurizing pumping assembly until the liquid flows out from the outlet in the first valve, which indicates that the test cavity 23 is filled with liquid, and then the first valve 18 can be closed. The pressurized pumping assembly then continues to inject liquid into the test chamber 23 while the automatic exhaust valve 19 continues to exhaust the residual air in the first line 17.
The pressure-bearing test device for the PCCP steel cylinder in the embodiment comprises a cylinder body assembly, a pressurizing pump assembly, an automatic exhaust valve 19 and a first valve 18. The cylinder component can enclose a test cavity 23 with the steel cylinder 8 to be tested, and liquid can be pumped into the test cavity 23 through the pressurizing pump component so as to pressurize the wall surface of the measuring cylinder. The first valve 18 and the automatic exhaust valve 19 can exhaust gas together in the initial stage of filling liquid to improve the exhaust efficiency in the initial stage of filling liquid. After the test cavity 23 is filled with liquid, the first valve 18 is closed, so that continuous exhaust through the automatic exhaust valve 19 can be ensured, liquid can be prevented from flowing out of the outside while automatic exhaust is realized, the tightness of the test cavity 23 is ensured, and the pressure stability in the process of performing a pressurization test on the steel cylinder 8 to be tested is improved.
In the alternative of this embodiment, the pressurizing and pumping assembly includes a pressurizing water pump 22 and a second valve 15, the outlet of the second valve 15 is communicated with the liquid through port of the test chamber 23, the pressure inside the test chamber 23 can be adjusted through the pressurizing water pump 22, and the on-off of the passage between the pressurizing water pump 22 and the inside of the test chamber 23 can be controlled through the second valve 15.
In an alternative of this embodiment, the pressurizing pumping assembly further comprises a check valve 14, an inlet of the check valve 14 being in communication with an outlet of the pressurizing water pump 22, and an outlet of the check valve 14 being in communication with an inlet of the second valve 15. The check valve 14 functions to allow the liquid to flow only from the direction of the pressurized water pump 22 to the direction of the second valve 15, thereby preventing the liquid from flowing backward, which is advantageous for reducing the impact of the liquid on the water pump.
In an alternative of this embodiment, the PCCP steel cylinder pressure-bearing test device further includes a third valve 16, an inlet of the third valve 16 is communicated between an outlet of the second valve 15 and a liquid through port of the test cavity 23, and an outlet of the third valve 16 is communicated with the outside. After the pressure-bearing test of the steel cylinder 8 to be tested is completed by the PCCP steel cylinder pressure-bearing test device, the pressure water pump 22 and the second valve 15 may be sequentially closed to cut off the passage between the test chamber 23 and the pressure water pump 22. The third valve 16 is opened again to communicate the test chamber 23 with the outside, so that the liquid in the test chamber 23 can be discharged to the outside through the third valve 16.
Alternatively, the second valve 15 communicates with the liquid through port through the second line 13, and the inlet of the third valve 16 communicates with the second line 13.
In an alternative of this embodiment, the first valve 18, the second valve 15 and the third valve 16 are all electrically operated valves.
The PCCP steel cylinder pressure-bearing test device further comprises a control system and a flow switch 21, wherein the flow switch 21 is arranged at the outlet of the first valve 18 to measure the liquid flow of the first valve 18. The first valve 18, the second valve 15, the third valve 16 and the flow switch 21 are electrically connected to the control system, respectively.
Specifically, when the PCCP steel cylinder pressure-bearing test device starts to inject liquid into the test cavity 23, the control system controls the first valve 18 and the second valve 15 to be opened, and controls the third valve 16 to be closed. When the flow switch 21 detects that the flow of the liquid in the first valve 18 reaches the preset flow, it indicates that the test chamber 23 is filled with the liquid, the flow switch 21 sends an early warning signal to the control system, and the control system controls the first valve 18 to close after receiving the early warning signal.
Optionally, the first valve 18, the second valve 15 and the third valve 16 are all electrically operated ball valves. The flow switch 21 is an existing flow switch having a function of communicating with a control system.
In an alternative of this embodiment, the PCCP steel cylinder pressure-bearing test device further includes a pressure sensor 20 and a frequency converter.
The measuring end of the pressure sensor 20 communicates with the inside of the test chamber 23 to measure the pressure of the liquid in the test chamber 23 in real time by the pressure sensor 20.
The pressurized water pump 22 is an electric pressurized water pump 22. The frequency converter is electrically connected with the pressurized water pump 22 so as to adjust the pumping flow of the pressurized water pump 22 through the frequency converter; in addition, the purpose of adjusting the pumping flow rate of the liquid can also be achieved by using the existing variable-frequency pressurizing water pump 22.
The frequency converter and the pressure sensor 20 are electrically connected to a control system, respectively, to adjust the output power and output frequency of the frequency converter according to the water pressure detected by the pressure sensor 20. Specifically, when the PCCP steel cylinder pressure-bearing test device starts a pressure-bearing test of the steel cylinder 8 to be tested for a predetermined duration under a predetermined pressure, the pressure sensor 20 can measure the liquid pressure in the test cavity 23 in real time, and send the measured pressure value to the control system. The control system compares the measured pressure value with the preset pressure, and when the measured pressure value is smaller than the preset pressure, the control system controls the frequency converter to improve the output power and the output frequency with corresponding values so as to enable the liquid pressure in the test cavity 23 to reach the preset pressure; when the measured pressure value is larger than the preset pressure, the control system controls the frequency converter to reduce the output power and the output efficiency with corresponding sizes so as to reduce the pressure of the liquid in the test cavity 23 to the preset pressure. Therefore, the effect that the liquid in the test cavity 23 is stabilized in the preset pressure within the preset time can be achieved through the matching of the frequency converter and the pressure sensor 20, so that the accuracy of the pressure-bearing test result of the steel cylinder 8 to be tested is improved.
In an alternative to this embodiment, the cartridge assembly comprises a cartridge body 3, a chassis 1, a mounting ring 26 and a first sealing member 2.
The cylinder body 3 and the mounting ring 26 are both arranged on the base 1, the outer ring of the mounting ring 26 is sleeved outside the bottom of the cylinder body 3, the steel cylinder female end 7 of the steel cylinder 8 to be tested is sleeved outside the outer ring of the mounting ring 26, and the steel cylinder female end 9 of the steel cylinder 8 to be tested is sleeved on the top of the cylinder body 3. So that the steel cylinder female end 7 and the cylinder body 3 can be firmly connected with the base 1 through the mounting ring 26.
The PCCP steel cylinder pressure-bearing test device also comprises a sealing assembly, wherein the sealing assembly is detachably arranged between the steel cylinder spigot end 9 and the cylinder body 3; the first sealing member 2 is disposed between the steel drum female end 7 and the mounting ring 26; the cylinder body 3, the mounting ring 26, the base 1, the steel cylinder 8 to be tested and the sealing assembly can enclose a test cavity 23. When the sealing assembly is sealed between the steel cylinder spigot end 9 and the cylinder body 3, the test cavity 23 is in a sealed state and can be used for injecting liquid and starting a pressure-bearing test on a belt measuring cylinder; when the sealing assembly is disassembled from the steel cylinder socket end 9 and the cylinder body 3, the test cavity 23 is communicated with the outside through a gap between the steel cylinder socket end 9 and the cylinder body 3, so that the discharge efficiency of liquid in the test cavity 23 can be improved under the action of atmospheric pressure.
That is to say, through setting up detachable seal assembly, can enough guarantee the leakproofness of experimental cavity 23 in the pressure-bearing test stage, can also improve the flowing back efficiency after the pressure-bearing test. In addition, by the double sealing of the first sealing member 2 and the second sealing member 4, the sealing performance of the top and the bottom of the test chamber 23 can be ensured simultaneously in the pressure-bearing test stage.
In an alternative of this embodiment, the sealing assembly comprises a hollow inner tube 5, a second sealing member 4, a two-position three-way solenoid valve 12 and a gas compressor.
The hollow inner tube 5 is arranged at the top of the cylinder body 3, the second sealing component 4 is sleeved on the outer ring of the hollow inner tube 5, and the two-position three-way electromagnetic valve 12 is communicated with the inside of the gas compressor and the hollow inner tube 5. Optionally, the second sealing member 4 and the first sealing member 2 are both O-rings. Optionally, the outer ring of the hollow inner tube 5 is fixedly connected with the inner ring of the second sealing member 4.
The one-position passage of the two-position three-way electromagnetic valve 12 enables the compressed gas to enter the interior of the hollow inner tube 5 from the gas compressor, and the one-position passage of the two-position three-way electromagnetic valve 12 is defined as a first-position passage. Specifically, when the gap between the steel cylinder socket end 9 and the cylinder body 3 needs to be sealed, the first passage is opened, the gas compressor inflates gas into the hollow inner tube 5, the hollow inner tube 5 expands radially, and the second sealing member 4 also expands radially under the expansion action of the elasticity of the second sealing member 4 and the expansion action of the hollow inner tube 5, so that the outer ring of the second sealing member 4 is tightly attached to the steel cylinder socket end 9, and the gap between the steel cylinder socket end 9 and the cylinder body 3 can be sealed by the sealing assembly.
The other position passage of the two-position three-way electromagnetic valve 12 can release the compressed gas from the inside of the hollow inner tube 5 to the outside, and the position passage of the two-position three-way electromagnetic valve 12 is defined as a second position passage. Specifically, when the sealing relation between the steel cylinder socket end 9 and the cylinder body 3 needs to be removed, the second position passage is opened, the compressed gas in the hollow inner tube 5 is discharged to the outside through the gas compressor, the hollow inner tube 5 contracts radially, the second sealing member 4 also contracts radially under the action of the elasticity of the second sealing member 4 and the contraction of the hollow inner tube 5, the outer ring of the second sealing member 4 is separated from the steel cylinder socket end 9, and therefore the sealing assembly can be used for removing the sealing between the steel cylinder socket end 9 and the cylinder body 3.
That is, the sealing and unsealing of the second sealing member 4 can be controlled by the two-position three-way electromagnetic valve 12, so that the sealing performance of the test cavity 23 can be ensured in the pressure-bearing test stage together with the first sealing member 2; and the sealing can be released after the test is finished, so that the test cavity 23 is communicated with the outside through a gap between the steel cylinder socket end 9 and the cylinder body 3, and the discharge efficiency of liquid in the test cavity 23 can be improved under the action of atmospheric pressure.
Optionally, the two-position three-way solenoid valve 12 communicates with the hollow inner tube 5 through a third pipeline 11.
Optionally, the liquid through port is arranged at the bottom of the cylinder body 3, and the overflow port is arranged at the top of the cylinder body 3.
In an alternative of this embodiment, the cylinder assembly further comprises a cover body 24 and a support ring 25, and the PCCP steel cylinder pressure-bearing test device further comprises a guide piece 6.
The cover 24 covers the top of the cartridge body 3, and the cover 24 provides a support position for the second sealing member 4, so that the sealing assembly can expand or contract in its own radial direction.
The cover body 24 is provided with a support ring 25, the guide piece 6 is arranged at the top of the support ring 25, and the support ring 25, the cover body 24 and the guide piece 6 form an installation groove with an opening facing the steel cylinder socket end 9. The top surface of the cap body 24 and the bottom surface of the guide 6 together define a stop for the seal assembly in the top-to-bottom direction, thereby enabling the seal assembly to expand or contract in its own radial direction without tilting and shifting during inflation or deflation, thereby improving the reusability of the seal assembly.
The hollow inner tube 5 and the second sealing component 4 are both arranged in the mounting groove, the hollow inner tube 5 is sleeved on the outer ring of the support ring 25, the support ring 25 provides radial support for the inner ring of the hollow inner tube 5, and therefore the centering performance of the hollow inner tube 5 in the expansion and contraction process is favorably kept, and the uniformity of the circumferential fit degree between the second sealing component 4 and the steel cylinder socket end 9 can be provided.
Alternatively, the bottom end of the support ring 25 is welded to the cover 24, and the top end of the support ring 25 is welded to the guide 6; alternatively, the support ring 25, the lid body 24, and the cartridge body 3 are integrally molded.
Optionally, the guide 6 comprises a support plate and a tapered sleeve fixedly arranged on the support plate, and the caliber of the top end of the tapered sleeve is smaller than that of the bottom end of the tapered sleeve. The conical sleeve is favorable for improving the convenience of mounting and dismounting the steel cylinder to be tested 8 and the PCCP steel cylinder pressure-bearing test device.
In an alternative of this embodiment, the control system includes a controller 30, an input device 31 and a display device 32, and the first valve 18, the second valve 15, the third valve 16, the flow switch, the input device 31 and the display device 32 are electrically connected to the controller 30, respectively.
The input device 31 is used for inputting and transmitting control instructions to the controller 30. Alternatively, the control instruction may be an initialization instruction, or the control instruction may be an instruction to control the opening and closing of the first valve 18, the second valve 15, and the third valve 16, respectively.
Optionally, a proximity switch 10 capable of being electrically connected with the control system is arranged on the base 1, the proximity switch 10 is used for sensing the distance between the steel cylinder female end 7 and the base 1, when the steel cylinder 8 to be tested and the PCCP steel cylinder pressure-bearing test device are installed in place, the proximity switch 10 can be triggered, and the proximity switch 10 sends an installation in-place signal to the controller 30.
Optionally, the display device 32 is used for displaying an operation interface, or the display device 32 is used for displaying the opening and closing states of the first valve 18, the second valve 15, the third valve 16 and the flow switch 21, or the display device 32 is used for displaying the liquid flow value measured by the flow sensor.
Alternatively, the input device 31 includes a touch screen, a keyboard, a mouse, or a voice input device, etc.
Optionally, the control system further comprises a network device 33, the network device 33 being adapted to electrically connect the controller 30 with the first valve 18, the second valve 15, the third valve 16, the flow switch 21, the input device 31 and the display device 32, etc.
Optionally, the controller 30 is connected with the frequency converter and the pressure sensor 20 through an RS485 field bus, and communicates through a modbus-RTU communication protocol to read a pressure value, control the frequency converter to output a corresponding frequency, and transmit a test pressure and a voltage stabilization time to the serial gateway, and the serial gateway is connected with a remote control PC through the Internet to realize remote access of the remote PC to the hydrostatic test data.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
Claims (10)
1. The utility model provides a PCCP steel cylinder pressure-bearing test device which characterized in that includes:
the cylinder component is arranged inside the steel cylinder to be tested and can form a sealed test cavity with the steel cylinder to be tested;
a water outlet of the pressurizing pumping assembly is communicated with a liquid through port of the test cavity;
an inlet of the automatic exhaust valve is communicated with an overflow port of the test cavity through a first pipeline;
and the inlet of the first valve is communicated with the first pipeline.
2. The PCCP steel cylinder pressure-bearing test device according to claim 1,
the pressurizing pumping assembly comprises a pressurizing water pump and a second valve, an outlet of the second valve is communicated with a liquid through port of the test cavity, and an outlet of the pressurizing water pump is communicated with an inlet of the second valve.
3. The PCCP steel cylinder pressure-bearing test device according to claim 2,
the pressurizing pumping assembly further comprises a check valve, wherein an inlet of the check valve is communicated with an outlet of the pressurizing water pump, and an outlet of the check valve is communicated with an inlet of the second valve.
4. The PCCP steel cylinder pressure-bearing test device of claim 3, further comprising:
and the inlet of the third valve is communicated between the outlet of the second valve and the liquid through port of the test cavity, and the outlet of the third valve is communicated with the outside.
5. The PCCP steel cylinder pressure-bearing test device according to claim 4,
the first valve, the second valve and the third valve are all electric valves;
the PCCP steel cylinder pressure-bearing test device further comprises a control system and a flow switch, wherein the flow switch is arranged at an outlet of the first valve;
the first valve, the second valve, the third valve and the flow switch are respectively electrically connected with the control system.
6. The PCCP steel cylinder pressure-bearing test device according to claim 5, further comprising a pressure sensor and a frequency converter;
the measuring end of the pressure sensor is communicated with the interior of the test cavity; the frequency converter is electrically connected with the pressurized water pump so as to adjust the pumping flow of the pressurized water pump through the frequency converter; the frequency converter and the pressure sensor are respectively electrically connected with the control system so as to adjust the output power and the output frequency of the frequency converter according to the water pressure detected by the pressure sensor.
7. The PCCP steel cylinder pressure-bearing test device of claim 5, wherein the cylinder assembly comprises a cylinder body, a base, a first sealing member and a mounting ring;
the cylinder body and the mounting ring are both arranged on the base, the inner ring of the mounting ring is sleeved on the bottom of the cylinder body, the steel cylinder socket end of the steel cylinder to be tested is sleeved on the outer ring of the mounting ring, and the steel cylinder socket end of the steel cylinder to be tested is sleeved on the top of the cylinder body;
the PCCP steel cylinder pressure-bearing test device also comprises a sealing assembly, wherein the sealing assembly is detachably arranged between the steel cylinder socket end and the cylinder body; the first sealing member is disposed between the steel cylinder female end and the mounting ring; the cylinder body, the mounting ring, the base, the steel cylinder to be tested and the sealing assembly can enclose the test cavity.
8. The PCCP steel cylinder pressure-bearing test device according to claim 7, wherein the sealing assembly comprises a hollow inner tube, a second sealing member, a two-position three-way solenoid valve and a gas compressor;
the hollow inner tube is arranged at the top of the cylinder body, the second sealing member is sleeved on the outer ring of the hollow inner tube, and the two-position three-way electromagnetic valve is communicated with the gas compressor and the inside of the hollow inner tube;
the one-position passage of the two-position three-way electromagnetic valve can enable compressed gas to enter the hollow inner tube from the gas compressor; and the other position passage of the two-position three-way electromagnetic valve can release compressed gas from the inside of the hollow inner tube to the outside.
9. The PCCP steel cylinder pressure-bearing test device of claim 8, wherein the cylinder assembly further comprises a cover and a support ring, the PCCP steel cylinder pressure-bearing test device further comprises a guide;
the lid is covered and is established the top of barrel body, be provided with on the lid the support ring, the guide sets up the top of support ring, the support ring the lid with the guide forms the opening orientation the mounting groove of steel cylinder socket end, the hollow inner tube of a tyre with the second seal member all sets up in the mounting groove, just the hollow inner tube of a tyre cover is established the outer lane of support ring.
10. The PCCP steel cylinder pressure-bearing test device according to claim 5, wherein the control system comprises a controller, an input device and a display device;
the first valve, the second valve, the third valve, the flow switch, the input device and the display device are respectively electrically connected with the controller; the input device is used for inputting a control instruction and transmitting the control instruction to the controller.
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| CN201921739389.6U CN210690273U (en) | 2019-10-15 | 2019-10-15 | PCCP steel cylinder pressure-bearing test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112763338A (en) * | 2021-02-05 | 2021-05-07 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | High-pressure hydraulic multipurpose test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112763338A (en) * | 2021-02-05 | 2021-05-07 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | High-pressure hydraulic multipurpose test device |
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