CN110514525B - Internal pressure contrast test device - Google Patents
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- CN110514525B CN110514525B CN201910805052.9A CN201910805052A CN110514525B CN 110514525 B CN110514525 B CN 110514525B CN 201910805052 A CN201910805052 A CN 201910805052A CN 110514525 B CN110514525 B CN 110514525B
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G01N3/06—Special adaptations of indicating or recording means
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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Abstract
The invention discloses an internal pressure contrast test device, which comprises an electric control system, a medium transmission system, a test installation system and a monitoring system, wherein the electric control system comprises a controller, a display and a pressure sensor; the test installation system comprises a fixing device and a protection device, and the monitoring system is installed in the protection device to monitor the state of a tested product; the controller receives signals of the pressure sensor and the monitoring system and controls the pressure pump and the flow dividing valve to convey media. The internal pressure contrast test device is high in safety, a user can check the display to observe the test condition in a safe area, and the internal pressure contrast test device can be used for researching a blasting test under the working condition of extreme internal pressure; the pressure test in a plurality of tested products can be tested, and the working efficiency is improved.
Description
Technical Field
The invention relates to the field of tools of power transmission insulating equipment, in particular to an internal pressure comparison test device.
Background
For products such as hollow insulators and the like, internal pressure inspection is an important link of product delivery tests, and at present, many manufacturers have simple internal pressure devices, but the devices can only carry out simple delivery tests on the products basically and cannot be used for testing the internal pressure explosion condition under extreme working conditions. The main reasons are the following aspects: firstly, the equipment has simple functions, basically only single factory test can be carried out, and the safety protection device is few during the test and has no monitoring function, so the equipment cannot be used for the research of the blasting test under the working condition of extreme internal pressure; pressure tests in a plurality of products cannot be carried out simultaneously, and the working efficiency is low.
Disclosure of Invention
In view of the shortcomings of the prior art, it is an object of the present invention to provide an internal pressure comparison test device for comparing the internal pressures of at least two products under test.
In order to achieve the purpose, the technical means adopted by the invention are as follows: an internal pressure comparison test device is used for comparing the internal pressures of at least two tested products and comprises an electric control system, a medium transmission system, a test installation system and a monitoring system, wherein the electric control system comprises a controller, a display and a pressure sensor; the test installation system comprises a fixing device and a protection device, a tested product is arranged on the fixing device, the protection device enables the tested product to be arranged in the closed space, and the monitoring system is arranged in the protection device to monitor the state of the tested product; the controller receives signals of the pressure sensor and the monitoring system and transmits the signals to the display, and the controller controls the pressure pump and the flow dividing valve to convey media according to the signals. The safety of the internal pressure contrast test device is guaranteed, and a user can observe the test condition by checking the display in a safe area through installing the fixed protection device and installing the monitoring system, so that the safety performance of the test is improved, and the device can be used for researching the blasting test under the working condition of extreme internal pressure; the internal pressure tests of a plurality of tested products can be carried out simultaneously, and the working efficiency is obviously improved.
Preferably, the monitoring system comprises a camera device and a transmission device, the transmission device transmits signals of the camera device to the controller, and a transparent protective cover is sleeved outside the camera device. The transparent protective cover is arranged to prevent the camera device from being damaged in the blasting experiment; the transmission device is a connecting medium of the camera device and the electric control system.
Preferably, fixing device includes the shrouding, shrouding and iron stand platform down, and the stabilizer blade of iron stand platform is fixed subaerial, goes up the shrouding and is used for sealed quilt survey product with lower shrouding, and lower shrouding fixed mounting is equipped with the valve on the lower shrouding on the iron stand platform, and product and medium transmission pipeline are surveyed in the valve intercommunication. The iron support is fixed with the ground, so that the stability of a test product can be ensured; the upper and lower sealing plates are used for sealing the upper and lower ends of the product to be tested. The lower sealing plate is internally provided with a valve for injecting a medium in a test, so that a tested product reaches a certain internal pressure, and the working condition of the product in actual operation is simulated.
Preferably, the medium is a liquid. For example, water or oil is used as a medium to carry out related internal pressure tests, so that the control is convenient.
More preferably, a liquid recovery or drainage device is provided within the protection device. The interior of the protection device is kept clean, and resource waste can be avoided.
Preferably, the protection device is movable along a ground rail and fixable to the ground. The protective device can move on a sliding rail which is vertical to the ground and is provided with a roller for adjustment, so that the tested product can be conveniently taken and placed; when the protective device is adjusted to a proper position, the protective device is fixed with the ground through the nut, and the protective device is prevented from being vibrated due to the impact of the internal pressure.
Preferably, the protection device is internally provided with shock absorption cotton. The impact generated by the parts of the tested product, which are thrown away by the internal pressure, on the inside of the protection device is reduced.
Preferably, the protection device is provided with a pressure relief valve. In order to prevent the internal pressure of the device from being too large after the explosion test, a pressure relief valve is arranged above the protection device to control the internal pressure, and when the internal pressure is too large, the pressure relief valve is opened to regulate the pressure.
Preferably, the controller adopts a PLC or a single chip microcomputer, the editability and the automatic feedback and triggering characteristics of the electric control system can be realized, the manual participation and control are reduced, and the test process is more accurate and controllable.
Aiming at the defects of the prior art, the invention also aims to provide a method for testing the internal pressure of a single tested product, which adopts the internal pressure comparison test device. The method widens the application range of the internal pressure comparison test device, and enables the internal pressure comparison test device to have universality.
In order to achieve the purpose, the technical means adopted by the invention are as follows: and a single tested product is arranged on the internal pressure contrast test device for testing.
Drawings
FIG. 1 is a schematic plan view of an internal pressure contrast test apparatus 1000 according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an internal pressure comparison test apparatus 1000 according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a setup testing system 30 according to one embodiment of the present invention;
fig. 4 is a schematic perspective view of an iron stand 3013 according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a partial installation of a test installation system 30 according to one embodiment of the present invention;
fig. 6 is a perspective view of the fixing clip 30134 according to an embodiment of the present invention.
Detailed Description
As required, detailed embodiments of the present invention are disclosed herein. However, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed manner, including employing various features disclosed herein in combination with features that may not be explicitly disclosed herein.
The first embodiment is as follows:
as shown in fig. 1-2, the internal pressure comparison testing apparatus 1000 of this embodiment is used for comparing the internal pressures of at least two products to be tested 50, and includes an electronic control system 10, a medium transmission system 20, a test installation system 30, and a monitoring system 40, where the electronic control system 10 includes a controller 101, a display 102, and a pressure sensor 103, the medium transmission system 20 includes a medium transmission line 201, a medium tank 202, a pressure pump 203, and a diverter valve 204, the medium transmission line 201 is sequentially connected to the medium tank 202, the pressure pump 203, the diverter valve 204, and the products to be tested 50, a medium is stored in the medium tank 202, and the pressure sensor 103 is installed on the medium transmission line 201 between the products to be tested 50 and the diverter valve 204; the test mounting system 30 includes a fixing device 301 and a protection device 302, the tested product 50 is disposed on the fixing device 301, the protection device 302 enables the tested product 50 to be disposed in the enclosed space, and the monitoring system 40 is mounted inside the protection device 302 to monitor the state of the tested product 50.
In this embodiment, the tested product 50 is an insulator 50, and the insulator 50 includes an insulating tube and flanges mounted at two ends of the insulating tube, and at least one end of the flanges at two ends is provided with an opening. In other embodiments, the product to be tested may be a product having a cavity with at least one end provided with an opening; the tested product can also be an insulating tube of an insulator.
It should be noted that in fig. 1, the connections between the respective components of the internal pressure comparison test apparatus 1000 through the medium transmission line 201 are indicated by double solid lines, and the electrical connections through the wires are indicated by single solid lines for easy distinction.
In this embodiment, the controller 101 receives signals from the pressure sensor 103 and the monitoring system 40 and transmits the signals to the display 102, and the display 102 can display time, images and real-time parameters to ensure the synchronization and validity of the records. The controller 101 controls the pressure pump 203 and the diverter valve 204 to deliver media in response to signals from the pressure sensor 103 and the monitoring system 40. . The controller 101 is respectively in wireless signal transmission with the pressure sensor 103 and the flow dividing valve 204, and the controller 101 is electrically connected with the pressure pump 203 by a lead to transmit signals; the diverter valve 204 is used for equivalent or proportional diversion, the controller 101 controls the diverter valve 204 to further control the flow rates of media of different pipelines, and the internal pressures of different tested products 50 connected by the pipelines are adjusted to be equal, so that the limit pressures of different tested products 50 can be compared under the test condition of the same internal pressure. In the schematic diagram of the pressure contrast test apparatus 1000 in fig. 2, the solid line with an arrow indicates that there is a signal feedback mechanism between the two systems connected. Specifically, signal feedback is provided between the electronic control system 10 and the medium transmission system 20, the controller 101 of the electronic control system 10 can control the control pressure pump 203 and the flow dividing valve 204 of the medium transmission system 20 to transmit the medium, and the line pressure of the medium transmission system 20 can be fed back to the pressure sensor 103 of the electronic control system 10 and further transmitted to the controller 101; the signal of the monitoring system 40 can be directly fed back to the controller 101 of the electronic control system 10.
The safety of the internal pressure contrast test device 1000 is guaranteed, and by installing the fixed protection device 302 and the monitoring system 40, a user can observe the test condition in a safe area by looking up the display 102, so that the safety performance of the test is improved, and the device can be used for researching a blasting test under an extreme internal pressure working condition; the internal pressure test of a plurality of tested products 50 can be tested, and the working efficiency is obviously improved.
In the present embodiment, the monitoring system 40 includes an image capturing device 401 and a transmission device, the transmission device transmits the signal of the image capturing device 401 to the controller 101, and the transmission device is a wireless signal transmission device, and in other embodiments, the transmission device may be any signal transmission device as long as the signal of the image capturing device 401 can be transmitted to the controller 101. The transfer device is a connection medium between the image pickup device 401 and the electronic control system 101.
In this embodiment, the transparent protection cover 402 and the transparent protection cover 402 are sleeved outside the image capturing device 401, and the transparent protection cover 402 is a tempered glass cover which can achieve high transparency and has good mechanical properties, and is the best choice for the transparent protection cover 402. In other embodiments, the transparent protective cover 402 is not limited to a tempered glass cover, and any other protective cover that can meet the requirements of protection and transparency can be applied to the device, such as high-strength polymethyl methacrylate (PMMA). The transparent protective cover 402 is provided to prevent damage to the image pickup device 401 in the blasting experiment.
In this embodiment, as shown in fig. 3-5, in combination with fig. 1, the fixing device 301 includes an upper sealing plate 3011, a lower sealing plate 3012 and an iron stand 3013, the iron stand 3013 is provided with a mounting table 30135 and four supporting legs 30131, the supporting legs 30131 are provided with through holes, and bolts pass through the through holes to fix the iron stand 3013 on the ground. In other embodiments, the fixing manner of the iron stand and the ground is not limited to bolt fixing, and may be any other fixing manner, such as clamping and fixing. The installation position on iron stand platform and ground also need not be the stabilizer blade, can have continuous area between the stabilizer blade in order to reach better fixed effect. It can be understood that if only one end of the product to be tested is provided with the through hole, the upper sealing plate can not be used.
In this embodiment, an upper sealing plate 3011 and a lower sealing plate 3012 are used to seal the product 50 to be tested, and the lower sealing plate 3012 is fixedly mounted on an iron stand 3013. As shown in fig. 4, the mounting platform 30135 is further provided with a plurality of criss-cross grooves 30136, the grooves 30136 are provided with a plurality of second mounting holes 30133, and the lower sealing plate 3012 is fixed on the mounting platform 30135 through the second mounting holes 30133. Specifically, the fixing clip 30134 shown in fig. 5 and 6 is in a right-angled Z shape and is composed of a first portion, a second portion, and a third portion, the first portion, the second portion, and the third portion are integrally formed and are made of plate materials with uniform thickness, the first portion and the third portion are parallel to each other, the second portion and the first portion and the third portion are perpendicular to each other to form the right-angled Z shape, the first portion is provided with a through hole matched with the second mounting hole 30133, the width of the first portion is smaller than the width of the groove 30136 on the mounting table 30135, that is, the first portion can be embedded into the groove 30136 on the mounting table 30135. In other embodiments, the widths of the second portion and the third portion may be the same as or different from the width of the first portion, and are not limited herein.
In this embodiment, the product 50 to be tested is fixed on the lower sealing plate 3012, specifically, the flange of the insulator 50 is fixed on the lower sealing plate 3012, the third part of the fixing clamp 30134 is attached to the flange surface close to the flange at one end of the insulating cylinder, the second part is attached to the side surface of the lower sealing plate 3012 and the inner side wall of the groove 30136 on the mounting table 30135, the third part is embedded in the groove 30136 of the mounting table 30135, and the through hole is matched with the second mounting hole 30133 and fixedly connected by bolts. Four fixing clips 30134 can be used for fixing one product 50 to be tested. In other embodiments, the number of the fixing clips 30134 may be adjusted according to the number of the grooves 30136.
In this embodiment, the mounting platform 30135 is provided with a first mounting hole 30132, the lower sealing plate 3012 is provided with a through hole corresponding to the first mounting hole 30132, and the valve 30121 is mounted on the through hole of the lower sealing plate 3012 through the first mounting hole 30132. The valve 30121 is connected to the tested product 50 and the medium transmission pipeline 201, and the tested product 50 is filled with the medium for testing through the valve 30121; and the valve 30121 can make the connection between the product 50 to be tested and the medium transmission pipeline 201 stable and not fail because of the increase of the internal pressure.
In this embodiment, the iron stand 3013 is fixed to the ground, which can ensure the stability of the product 50 to be tested; an upper sealing plate 3011 and a lower sealing plate 3012 are used to seal the upper end and the lower end of the product 50 to be tested, wherein a valve 30121 is installed in the lower sealing plate 3012 and is used to inject the medium in the test, so as to reach a certain internal pressure and simulate the working condition of the product 50 to be tested in actual operation.
In this embodiment, the medium is water. In other embodiments, the medium may be a liquid medium such as oil, and the liquid medium is subjected to a related internal pressure test for easy control; the medium can also be gas, such as air, nitrogen and other cheap, easily available, economic and environment-friendly gas media.
In this embodiment, a liquid discharge device 303 is provided in the protection device 302. The interior of the protective device 302 can be kept clean. In other embodiments, a liquid recycling device is disposed in the protection device 302, so as to avoid resource waste.
In this embodiment, the protection device 302 can move along the ground slide 304 and can be fixed on the ground. The protective device 302 can move on a slide rail 304 which is vertical to the ground and provided with rollers for adjustment, so that the tested product 50 can be conveniently taken and placed; when adjusting suitable position, fix through nut and ground, prevent that protection device from receiving the impact of internal pressure and vibrations, other link up the face and can adopt the mode of drop-down door curtain to seal or seal the mode of fixed additional installation door, prevent to have the object departure among the blast test process, threaten testing personnel's personal safety.
In other embodiments, the protection device may be a fixed enclosed space provided with a door, and the fixing device may be moved inside the protection device and then subjected to a fixing operation. In the test process, the fixing device and the protection device can be fixed, and the protection device enables a tested product to be in a closed space.
In the present embodiment, the protective device 302 is provided with a shock absorbing cotton 3021 inside. The shock absorbing cotton 3021 is installed on the upper top surface of the protection device 302. In other embodiments, the inner side of the protection device 302 may be provided with shock absorbing cotton. The shock absorbing cotton 3021 can reduce the impact between the parts of the product 50 to be tested, which are thrown away due to excessive internal pressure, and the interior of the protection device 302.
In the present embodiment, the protection device 302 is provided with a relief valve 3022. In order to prevent an excessive internal pressure in the apparatus after the burst test, a relief valve 3022 is provided above the protector 302 to control the internal pressure, and when the internal pressure is excessive, the relief valve 3022 is opened to perform pressure regulation.
In this embodiment, the controller 101 is a PLC or a single chip microcomputer, which can implement the editability and the automatic feedback and triggering characteristics of the electronic control system 10, reduce the manual participation and control, and make the testing process more accurate and controllable.
The safety of the internal pressure contrast test device 1000 of the embodiment is guaranteed, and by installing the fixed protection device 302 and the monitoring system 40, a user can observe the test condition in a safe area by looking up the display 102, so that the safety performance of the test is improved, and the device can be used for researching the blasting test under the working condition of extreme internal pressure; the internal pressure test of a plurality of tested products 50 can be tested, and the working efficiency is obviously improved.
Example two:
this embodiment provides a method for testing the pressure in a single product to be tested, using the above-mentioned apparatus 1000 for comparing internal pressure. The method widens the application range of the internal pressure comparison test device, and enables the internal pressure comparison test device to have universality.
In this embodiment, the specific operation method is as follows: a single product 50 under test is mounted on the internal pressure comparison test apparatus 1000.
Before the internal pressure contrast test device 1000 is started, the valve at one end of the diverter valve 204 connected with the product to be tested is opened, and other valves are closed.
In other embodiments, the internal pressure comparison test device can be implemented in all of the first embodiment.
While the invention has been described with reference to the above disclosure and features, it will be understood by those skilled in the art that various changes and modifications in the above constructions and materials can be made, including combinations of features disclosed herein either individually or in any combination, as appropriate, without departing from the spirit of the invention. Such variations and/or combinations are within the skill of the art to which the invention pertains and are within the scope of the following claims.
Claims (9)
1. An internal pressure contrast test device is used for contrasting the internal pressure of at least two tested products, and is characterized in that: comprises an electric control system, a medium transmission system, a test installation system and a monitoring system, wherein the electric control system comprises a controller, a display and a pressure sensor, the medium transmission system comprises a medium transmission pipeline, a medium box, a pressure pump and a shunt valve, the medium transmission pipeline is sequentially connected with the medium box, the pressure pump, the shunt valve and the product to be detected, the medium tank stores medium, the pressure sensor is arranged on the medium transmission pipeline between the product to be tested and the flow dividing valve, the shunt valve is used for shunting in equal quantity or in proportion, the controller controls the shunt valve to further control the flow rate of the medium in different pipelines, the internal pressure of at least two tested products connected with the pipelines is adjusted to be equal, comparing the limit pressures of at least two tested products under the test condition of the same internal pressure; the test installation system comprises a fixing device and a protection device, the tested product is arranged on the fixing device, the fixing device is fixed on the ground, the fixing device comprises an upper sealing plate, a lower sealing plate and an iron stand platform, supporting legs of the iron stand platform are fixed on the ground, the upper sealing plate and the lower sealing plate are used for sealing the tested product, the lower sealing plate is fixedly arranged on the iron stand platform, a valve is arranged on the lower sealing plate and communicated with the tested product and the medium transmission pipeline, the protection device enables the tested product to be arranged in a closed space, and the monitoring system is arranged in the protection device to monitor the state of the tested product; the controller receives signals of the pressure sensor and the monitoring system and transmits the signals to the display, and the controller controls the pressure pump and the flow dividing valve to convey the medium according to the signals; the tested product is an insulator which comprises an insulating pipe and flanges arranged at two ends of the insulating pipe, and at least one end of each flange at two ends is provided with an opening.
2. The internal pressure contrast test apparatus of claim 1, wherein: the monitoring system comprises a camera device and a transmission device, the transmission device transmits signals of the camera device to the controller, and a transparent protective cover is sleeved outside the camera device.
3. The internal pressure contrast test apparatus of claim 1, wherein: the medium is a liquid.
4. The internal pressure contrast test apparatus of claim 3, wherein: and a liquid recovery or discharge device is arranged in the protection device.
5. The internal pressure contrast test apparatus of claim 1, wherein: the protection device can move along the ground sliding rail and can be fixed on the ground.
6. The internal pressure contrast test apparatus of claim 1, wherein: the inside shock attenuation cotton that is provided with of protection device.
7. The internal pressure contrast test apparatus of claim 1, wherein: the protection device is provided with a pressure release valve.
8. The internal pressure contrast test apparatus of claim 1, wherein: the controller adopts a PLC.
9. Use of the internal pressure contrast test device of any one of claims 1 to 8 in a pressure test in a single said product under test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805052.9A CN110514525B (en) | 2019-08-29 | 2019-08-29 | Internal pressure contrast test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805052.9A CN110514525B (en) | 2019-08-29 | 2019-08-29 | Internal pressure contrast test device |
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| CN110514525A CN110514525A (en) | 2019-11-29 |
| CN110514525B true CN110514525B (en) | 2022-04-22 |
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| CN201910805052.9A Active CN110514525B (en) | 2019-08-29 | 2019-08-29 | Internal pressure contrast test device |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5029969A (en) * | 1988-10-14 | 1991-07-09 | Ngk Insulators, Ltd. | Optical fiber composite insulator and method of producing the same |
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