Sealing performance testing device for transformer submersible robot

Abstract

The invention discloses a transformer diving robot sealing performance testing device, which comprises a plurality of oil tanks, which are provided with observation windows, oil injection equipment, pressurization equipment, temperature control equipment and leakage detection equipment, and are used for accommodating a transformer diving robot and transformer oil for testing the sealing performance of the transformer diving robot; the oil injection equipment is used for injecting transformer oil for testing the sealing performance of the transformer submersible robot into the oil tank; the pressurizing equipment is used for dynamically and adjustably applying air pressure to the oil tank through the top of the oil tank; the temperature control equipment is used for controlling the rising amplitude of the oil temperature in the oil tank, and the leakage detection equipment is used for detecting whether leakage of transformer oil to the transformer diving robot occurs or not through an observation window of the oil tank. The invention provides a sealing performance testing device for a transformer submersible robot, which can solve the problem of sealing performance detection of the transformer submersible robot.

Description

Technical Field

[0001] The invention belongs to the field of transformer submersible robots, and in particular relates to a sealing test device for transformer submersible robots. Background Art

[0002] As the core equipment to ensure the normal operation of the power grid, the safe, reliable and economic operation of large oil-immersed transformers is closely related to the social economy and residents' lives. When a large oil-immersed transformer fails, it is necessary to find the cause of the failure in time and confirm the internal state of the equipment. At present, most of this inspection is still carried out by hanging covers or professionals entering the transformer through the manhole reserved on the transformer. Before the inspection, the transformer oil inside the transformer needs to be drained, which not only takes a long time to power outage and consumes a lot of manpower, but also may cause internal pollution of the transformer, bringing secondary hidden dangers to the safe operation of the transformer. Therefore, it is of great significance to seek a method that can systematically carry out internal state inspection of oil-immersed main transformers without or with less oil. There are many advantages of using robots to replace manual labor to carry out transformer internal inspection. Since it can partially replace manual labor, it reduces personnel risks; since the oil discharge operation can be partially avoided, it reduces the risk of moisture on the transformer insulation paper; since it can shorten the operation time and reduce the power outage time, it brings great economic benefits. It is precisely because of these advantages that many well-known transformer manufacturers and scientific research institutions at home and abroad have invested in the research and development of transformer submersible robots.

[0003] Compared with traditional manual internal inspection, the use of robot internal inspection can greatly shorten the time of on-site oil discharge inspection, reduce manual labor intensity, and reduce the risk of accidental insulation damage. The advantages are very obvious and have received widespread attention from power grid companies and transformer manufacturers.

[0004] When the submersible robot is working inside the transformer, it is completely immersed in the insulating oil and needs to withstand the pressure of the oil, which is prone to leakage. Since the transformer oil that has just been taken out of operation may still have a certain temperature rise, the oil temperature may be higher than the ambient temperature. The temperature rise will cause the expansion and contraction of the sealing structure of the submersible robot, causing leakage. On the other hand, the commonly used sealing materials are plastics, rubber and other materials. After being immersed in transformer oil, there are problems such as expansion and dissolution, which are prone to leakage.

[0005] However, the art currently lacks a special sealing detection device for transformer submersible robots. Summary of the invention

[0006] In view of this, the present invention discloses a transformer submersible robot sealing test device, comprising: A fuel tank having a viewing window, Oiling equipment, Pressurized equipment, Temperature control equipment, and Leak detection equipment, in, The oil tank is a sealed oil tank used to contain the transformer submersible robot and the transformer oil for the transformer submersible robot sealing test. Oil filling equipment, used to inject transformer oil into the oil tank for the transformer underwater robot sealing test, Pressurizing equipment, used to dynamically and adjustable apply air pressure to the tank through the top of the tank, Temperature control equipment, used to control the oil temperature rise in the oil tank, The leakage detection device is used to detect whether the transformer oil leaks to the transformer submersible robot through the observation window of the oil tank.

[0007] Preferably, Whether leakage occurs is automatically determined through image processing.

[0008] Preferably, Use artificial intelligence technology based on neural network models to automatically judge images.

[0009] Preferably, Automatic judgment is made based on the comparison of images at previous and subsequent moments and their mathematical formulas.

[0010] Preferably, it also includes: Oil draining equipment is used to drain the transformer oil from the oil tank.

[0011] Preferably, The oil injection device is integrated with the oil discharge device to form the oil injection and discharge device.

[0012] Preferably, The fuel tank is made of lightweight metal material for easy transportation.

[0013] Preferably, There is an oil filling port at the bottom of the oil tank.

[0014] Preferably, The top cover of the fuel tank is provided with an air inlet which also serves as an air extraction port.

[0015] Preferably, The observation window is arranged at the top cover of the oil tank and is a long observation window for observing the oil level and the state of the test product.

[0016] Preferably, The oil filling and discharge equipment includes an oil filter and an oil pump.

[0017] In addition, the present invention also discloses a method for testing the sealing performance of a transformer submersible robot, comprising the following steps: A sealed oil tank is used to contain the transformer submersible robot and the transformer oil for the transformer submersible robot sealing test. Use the oil filling equipment to inject transformer oil for the transformer underwater robot sealing test into the oil tank. Use a pressurized device to dynamically and adjustable apply air pressure to the tank through the top of the tank. Use temperature control equipment to control the oil temperature rise in the oil tank. A leakage detection device is used to detect whether leakage of transformer oil to the transformer submersible robot occurs through the observation window of the oil tank.

[0018] Preferably, Whether leakage occurs is automatically determined through image processing.

[0019] Preferably, Use artificial intelligence technology based on neural network models to automatically judge images.

[0020] Preferably, Automatic judgment is made based on the comparison of images at previous and subsequent moments and their mathematical formulas.

[0021] Preferably, it also includes: Use the oil draining equipment to drain the transformer oil in the tank.

[0022] In addition, the present invention also discloses a computer storage medium, wherein the storage medium includes computer instructions, and when the computer is run on the computer, the computer executes any of the methods described above.

[0023] In addition, the present invention also discloses an electronic device, wherein the electronic device comprises: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, any of the methods described above is implemented.

[0024] Beneficial effects of the present invention: The invention provides a transformer submersible robot sealing test device, which can solve the problem of sealing performance detection of the transformer submersible robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figures 1 to 3 Schematic diagrams of devices, methods, and electronic devices in different embodiments of the present invention. DETAILED DESCRIPTION

[0026] In order to make those skilled in the art understand the technical solution disclosed in the present invention, the following will be combined with the embodiments and related appended Figures 1 to 3, the technical solutions of various embodiments are described, and the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It will be understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] It should be noted that the submersible robot referred to in the present invention is a robot used to submerge in the oil tank of a transformer.

[0028] In one embodiment, a transformer submersible robot sealing test device includes: A fuel tank having a viewing window, Oiling equipment, Pressurized equipment, Temperature control equipment, and Leak detection equipment, in, The oil tank is a sealed oil tank used to contain the transformer submersible robot and the transformer oil for the transformer submersible robot sealing test. Oil filling equipment, used to inject transformer oil into the oil tank for the transformer underwater robot sealing test, Pressurizing equipment, used to dynamically and adjustable apply air pressure to the tank through the top of the tank, Temperature control equipment, used to control the oil temperature rise in the oil tank, The leakage detection device is used to detect whether the transformer oil leaks to the transformer submersible robot through the observation window of the oil tank.

[0029] It should be noted that, whether leakage occurs is determined automatically through image processing. For example, an artificial intelligence technology based on a neural network model can be used to automatically determine the image, or the image can be automatically determined based on a comparison of images at previous and subsequent moments and a mathematical formula thereof.

[0030] In one embodiment, it further includes: Oil draining equipment is used to drain the transformer oil from the oil tank.

[0031] More preferably, in one embodiment, The oil injection device is integrated with the oil discharge device to form an oil injection and discharge device, that is, an oil injection / discharge device.

[0032] For example, see Figure 1 , which discloses a transformer submersible robot sealing test device.

[0033] in, 1. Fuel tank The oil tank is made of lightweight metal material for easy transportation. It has an oil filling port at the bottom, an air inlet (also serving as an air extraction port) on the top cover, and a long observation window for observing the oil level and the status of the test product.

[0034] 2. Oil filling and discharge equipment The oil filling and draining equipment is mainly composed of an oil filter and an oil pump, which can ensure the quality of the oil, and can adopt the bottom oil filling method, and can also play the role of oil drainage.

[0035] 3. Pressurization equipment Pressurization equipment is used to change the internal pressure and can also provide vacuum conditions.

[0036] 4. Temperature control equipment The heater is mainly used for external heating to increase the oil temperature.

[0037] in, The device is also provided with a top cover exhaust valve flange and positive and negative pressure gauge installation ports.

[0038] Exemplarily, the testing method based on the transformer submersible robot sealing testing device includes the following steps: 1. Ensure that there is no positive or negative pressure in the empty oil tank, open the oil tank cover, and place the robot test product (i.e. the transformer submersible robot to be tested) at the bottom of the oil tank with a hook.

[0039] 2. Close the top cover and make sure the fuel tank is sealed.

[0040] 3. Vacuum oil filling Prepare the oil storage equipment. If necessary, use the oil filter to filter the oil. Ensure that the oil filling valve is closed. Close the exhaust valve on the top cover. Connect the vacuum pump oil to the gas line. Pump to a certain vacuum degree. Turn off the vacuum pump. Open the oil filling valve. The oil will automatically enter the oil tank. When the oil level reaches the preset condition, close the oil filling valve.

[0041] 4. Oil temperature adjustment Open the exhaust valve and use the temperature control system to heat the oil temperature to the preset value.

[0042] 5.Pressure preparation Connect the air compressor to the gas line, close the exhaust valve, turn on the air compressor, and when the pressure of the test sample indicated by the pressure gauge reaches the preset value, turn off the air compressor or set it to constant pressure mode. At this time, the pressure at the location of the test sample is Pt=Pa+ .

[0043] 6. Test process During the test, it is necessary to observe whether the changes in oil temperature and pressure are within the control range.

[0044] 7. Oil drainage process After the test, close the air compressor outlet valve and slowly open the top exhaust valve to avoid oil spraying; unhook the oil filling machine, connect the oil pump to the oil filling port, open the oil filling valve, and drain the oil in the tank into the oil storage device.

[0045] It can be found that the present invention has the following characteristics: 1) A method for testing the sealing performance of equipment under oil immersion conditions at different temperatures was proposed, and a related device was invented to solve the current problem of lack of combined temperature and pressure detection equipment under oil immersion conditions.

[0046] 2) The relationship between air pressure Pa and oil depth pressure Po (i.e. ,h o Indicates the depth of oil), combined with the pressurization method, reduces the height of the test equipment and ensures the pressure test adjustment range.

[0047] 3) The introduction of vacuum oil filling and oil filtering equipment can facilitate the process of oil filling, oil draining and oil cleaning.

[0048] See also Figure 2 In another embodiment, the present invention further discloses a method for testing the sealing performance of a transformer submersible robot, comprising the following steps: A sealed oil tank is used to contain the transformer submersible robot and the transformer oil for the transformer submersible robot sealing test. Use the oil filling equipment to inject transformer oil for the transformer underwater robot sealing test into the oil tank. Use a pressurized device to dynamically and adjustable apply air pressure to the tank through the top of the tank. Use temperature control equipment to control the oil temperature rise in the oil tank. A leakage detection device is used to detect whether leakage of transformer oil to the transformer submersible robot occurs through the observation window of the oil tank.

[0049] Preferably, Whether leakage occurs is automatically determined through image processing.

[0050] Preferably, Use artificial intelligence technology based on neural network models to automatically judge images.

[0051] Preferably, Automatic judgment is made based on the comparison of images at previous and subsequent moments and their mathematical formulas.

[0052] Preferably, it also includes: Use the oil draining equipment to drain the transformer oil in the tank.

[0053] In addition, in one embodiment, the present invention also discloses a computer storage medium, wherein the storage medium includes computer instructions, and when the computer is run on the computer, the computer executes any of the methods described above.

[0054] In addition, see Figure 3 In one embodiment, the present invention further discloses an electronic device, wherein the electronic device comprises: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, any of the methods described above is implemented.

[0055] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transformer submersible robot sealing test device, comprising: A fuel tank having an observation window; a fuel filling device; a pressurizing device; temperature control equipment, and, leak detection equipment; wherein, The oil tank is a sealed oil tank used to contain the transformer submersible robot and the transformer oil for the transformer submersible robot sealing test. Oil filling equipment, used to inject transformer oil into the oil tank for the transformer underwater robot sealing test, Pressurizing equipment, used to dynamically and adjustable apply air pressure to the tank through the top of the tank, Temperature control equipment, used to control the oil temperature rise in the oil tank, The leakage detection device is used to detect whether the transformer oil leaks to the transformer submersible robot through the observation window of the oil tank.

2. The device according to claim 1, wherein: Whether leakage occurs is automatically determined through image processing.

3. The device according to claim 2, wherein: Use artificial intelligence technology based on neural network models to automatically judge images.

4. The device according to claim 2, wherein: Automatic judgment is made based on the comparison of images at previous and subsequent moments and their mathematical formulas.

5. The device according to claim 1, wherein: Also includes: Oil draining equipment is used to drain the transformer oil from the oil tank.

6. The device according to claim 5, wherein: The oil injection device is integrated with the oil discharge device to form the oil injection and discharge device.

7. The device according to claim 1, wherein: The fuel tank is made of lightweight metal material for easy transportation.

8. The device according to claim 1, wherein: The top cover of the fuel tank is provided with an air inlet which also serves as an air extraction port.

9. The device according to claim 1, wherein: The observation window is arranged at the top cover of the oil tank and is a long observation window for observing the oil level and the state of the test product.

10. The device according to claim 6, wherein: The oil filling and discharge equipment includes an oil filter and an oil pump.

11. A method for testing the sealing performance of a transformer submersible robot, comprising the following steps: A sealed oil tank is used to contain the transformer submersible robot and the transformer oil for the transformer submersible robot sealing test. Use the oil filling equipment to inject transformer oil for the transformer underwater robot sealing test into the oil tank. Use a pressurized device to dynamically and adjustable apply air pressure to the tank through the top of the tank. Use temperature control equipment to control the oil temperature rise in the oil tank. A leakage detection device is used to detect whether leakage of transformer oil to the transformer submersible robot occurs through the observation window of the oil tank.

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