CN216310208U - Test device for detecting gas relay of nuclear power station - Google Patents
Test device for detecting gas relay of nuclear power station Download PDFInfo
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- CN216310208U CN216310208U CN202122101351.XU CN202122101351U CN216310208U CN 216310208 U CN216310208 U CN 216310208U CN 202122101351 U CN202122101351 U CN 202122101351U CN 216310208 U CN216310208 U CN 216310208U
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Abstract
The utility model belongs to the technical field of nuclear power station detection, and particularly relates to a test device for detecting a gas relay of a nuclear power station. The test device for detecting the gas relay of the nuclear power station comprises an oil transfer pump, an inflation mechanism, a cylinder body for containing the gas relay and a tank body for containing oil, wherein the inflation mechanism is communicated with an air inlet of the tank body; the test device for detecting the nuclear power station gas relay further comprises a first oil pipe used for communicating the tank body with the oil transfer pump, a second oil pipe used for communicating the oil transfer pump with the cylinder body, and a third oil pipe used for communicating the cylinder body with the tank body. According to the utility model, the performance of the gas relay is detected by the test device for detecting the gas relay of the nuclear power station, so that the detection precision and the detection efficiency of the gas relay are improved.
Description
Technical Field
The utility model belongs to the technical field of nuclear power station detection, and particularly relates to a test device for detecting a gas relay of a nuclear power station.
Background
The transformer is used as important electrical equipment of the nuclear power station, and is used for converting the power output by the nuclear power station unit to a proper voltage level and then outputting the power to a power grid system, or regulating the voltage of the power grid system by the transformer and then supplying the power to users for power utilization. The gas relay is used as a main protection device of the transformer, when the relay has slight fault, the gas relay gives out light gas alarm, and when the relay has major fault, the gas relay trips a heavy bearing. However, due to the reliability of the buchholz relay, when the buchholz relay sends out a light buchholz alarm, the transformer does not always have to have a fault inside, so the performance detection of the buchholz relay is particularly important.
In the prior art, the performance of the gas relay is generally judged by observing the appearance of the gas relay and manually pressing a test; however, this method of detecting a buchholz relay has a problem of low detection accuracy.
SUMMERY OF THE UTILITY MODEL
The utility model provides a test device for detecting a gas relay of a nuclear power station, aiming at the technical problem that the detection precision is low in a method for detecting the gas relay in the prior art.
In view of the above technical problems, an embodiment of the present invention provides a test apparatus for detecting a gas relay in a nuclear power station, including an oil transfer pump, an inflation mechanism, a cylinder for accommodating the gas relay, and a tank for accommodating oil, wherein the inflation mechanism is communicated with an air inlet of the tank; the test device for detecting the nuclear power station gas relay further comprises a first oil pipe used for communicating the tank body with the oil transfer pump, a second oil pipe used for communicating the oil transfer pump with the cylinder body, and a third oil pipe used for communicating the cylinder body with the tank body.
Optionally, the test device for detecting the nuclear power plant gas relay further comprises a first flow meter for measuring the flow rate of the oil in the second oil pipe, and a second flow meter for measuring the flow rate of the oil in the third oil pipe; the first flow meter is mounted on the second tubing and the second flow meter is mounted on the third tubing.
Optionally, the test device for detecting the nuclear power plant gas relay further includes a first regulating valve for regulating a flow rate of oil in the second oil pipe, and the first regulating valve is installed in the second oil pipe.
Optionally, the test device for detecting the nuclear power plant gas relay further includes a second regulating valve for regulating a flow rate of oil in the third oil pipe, and the second regulating valve is installed in the third oil pipe.
Optionally, the test device for detecting the nuclear power plant gas relay further comprises an inflation pipeline and an isolation valve installed in the inflation pipeline, and the inflation pipeline is communicated with the inlet of the barrel through the inflation pipeline.
Optionally, the test device for detecting the nuclear power plant buchholz relay further includes a pressure balancer for balancing the pressure in the tank, and the pressure balancer is communicated with the tank.
Optionally, the pressure balancer comprises a balancing pipe and a balancing valve installed in the balancing pipe, and the balancing valve is communicated with the tank body.
Optionally, the test device for detecting the nuclear power plant gas relay further comprises an oil injection pipeline and an oil injection valve installed in the oil injection pipeline, and the oil injection pipeline is communicated with the tank body.
Optionally, the test device for detecting the nuclear power plant gas relay further comprises an oil discharge pipeline and an oil discharge valve installed in the oil discharge pipeline, and the oil discharge pipeline is communicated with the bottom of the tank body.
Optionally, the test device for detecting the nuclear power plant gas relay further comprises a liquid level meter for detecting the height of oil liquid in the tank, and the liquid level meter is communicated with the tank.
In the utility model, whether the liquid flow heavy gas of the gas relay in the cylinder is qualified or not is detected by adjusting the flow rate of the oil liquid input into the cylinder through the oil transfer pump; the gas is filled into the barrel through the gas filling mechanism, whether heavy gas of the gas relay is qualified or not is detected, whether light gas of the gas relay is qualified or not is detected, and the performance of the gas relay is comprehensively judged according to the qualified conditions of the heavy gas of the liquid flow, the heavy gas of the gas flow and the light gas of the gas flow of the gas relay. The performance of the gas relay is detected through the test device for detecting the gas relay of the nuclear power station, and the detection precision and the detection efficiency of the gas relay are improved.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic diagram of a testing apparatus for detecting a nuclear power plant buchholz relay according to an embodiment of the present invention.
The reference numerals in the specification are as follows:
1. an oil transfer pump; 2. an inflation mechanism; 3. a first oil pipe; 4. a second oil pipe; 5. a third oil pipe; 6. A barrel; 7. a tank body; 8. a first flow meter; 9. a second flow meter; 10. a first regulating valve; 11. a second regulating valve; 12. an inflation conduit; 13. an isolation valve; 14. a balance pipeline; 15. a balancing valve.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing and simplifying the present invention, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
As shown in fig. 1, a test device for detecting a buchholz relay of a nuclear power station according to an embodiment of the present invention includes an oil transfer pump 1, an inflation mechanism 2, a cylinder 6 for accommodating the buchholz relay, and a tank 7 for accommodating oil, wherein the inflation mechanism 1 is communicated with an air inlet of the tank 7; the test device for detecting the nuclear power station gas relay further comprises a first oil pipe 3 used for communicating the tank body 7 with the oil transfer pump 1, a second oil pipe 4 used for communicating the oil transfer pump 1 with the cylinder body 6, and a third oil pipe 5 used for communicating the cylinder body 6 with the tank body 7. Specifically, the first end of the first oil pipe 3 is communicated with the outlet of the tank body 7, the other end of the first oil pipe 3 is communicated with the inlet of the oil transfer pump 1, the outlet of the oil transfer pump 1 is communicated with one end of the second oil pipe 4, the other end of the second oil pipe 4 is communicated with the inlet of the cylinder body 6, the outlet of the cylinder body 6 is communicated with one end of the third oil pipe 5, the other end of the third oil pipe 5 is communicated with the inlet of the tank body 7, and the inflating mechanism 2 is communicated with the inlet of the tank body 7.
The test device for detecting the gas relay of the nuclear power station comprises the following working steps: firstly, a gas relay is installed in the cylinder 6, the oil delivery pump 1 pumps oil in the tank 7 through the first oil pipe 3 and inputs the oil into the cylinder 6 through the second oil pipe 4, and the oil in the cylinder 6 flows back into the tank 7 through the third oil pipe 5. Adjusting the flow rate of oil conveyed by the oil conveying pump 1 until the oil flow heavy gas node of the gas relay is switched on, and recording the first flow rate of the oil in the second oil pipe 4 and the second flow rate of the oil in the third oil pipe 5 when the oil flow heavy gas node of the gas relay is switched on, and taking the average value of the first flow rate and the second flow rate as the flow rate of the oil flow heavy gas action of the gas relay. Comparing the average value of the first flow rate and the second flow rate with a standard heavy gas oil flow parameter (oil flow value on a nameplate of a gas relay) of the gas relay, and if the difference of the average value and the standard heavy gas oil flow parameter is within a first preset range, indicating that the oil flow heavy gas alarm of the gas relay is qualified; otherwise, the oil flow heavy gas alarm of the gas relay is unqualified.
Filling gas into the cylinder 6 through the gas filling mechanism 2 until the gas flow light gas node of the gas relay is conducted, and recording the volume of the gas in the cylinder 6, wherein the first volume is recorded as the gas volume of the gas flow light gas node of the gas relay; and continuously filling gas into the cylinder 6 through the gas filling mechanism 2 until the gas flow heavy gas node of the gas relay is conducted, and recording a second volume of the gas in the cylinder 6, wherein the second volume is recorded as the gas volume of the gas flow heavy gas node of the gas relay. Comparing the first volume with a standard gas flow light gas parameter (a gas value on a gas relay nameplate) of the gas relay, and if the difference between the first volume and the standard gas flow light gas parameter is within a second preset range, indicating that the gas light gas alarm of the gas relay is qualified; otherwise, the gas relay has unqualified gas flow light gas alarm work. Comparing the second volume with a standard gas flow heavy gas parameter (a gas value on a gas relay nameplate) of the gas relay, and if the difference between the second volume and the standard gas flow heavy gas parameter is within a third preset range, indicating that the gas flow heavy gas alarm of the gas relay is qualified; otherwise, the gas relay has unqualified air flow heavy gas alarm work
In the utility model, whether the liquid flow heavy gas of the gas relay in the cylinder 6 is qualified or not is detected by adjusting the flow rate of the oil liquid input into the cylinder 6 through the oil transfer pump 1; the gas is filled into the barrel 6 through the gas filling mechanism 2, whether heavy gas of the gas flow of the gas relay is qualified or not is detected, whether light gas of the gas flow of the gas relay is qualified or not is detected, and the performance of the gas relay is comprehensively judged according to the qualified conditions of heavy gas of the liquid flow, heavy gas of the gas flow and light gas of the gas flow of the gas relay. The performance of the gas relay is detected through the test device for detecting the gas relay of the nuclear power station, and the detection precision and the detection efficiency of the gas relay are improved.
In an embodiment, as shown in fig. 1, the testing apparatus for detecting the nuclear power plant gas relay further includes a first flow meter 8 for measuring a flow rate of the oil in the second oil pipe 4, and a second flow meter 9 for measuring a flow rate of the oil in the third oil pipe 5; the first flowmeter 8 is mounted on the second oil pipe 4, and the second flowmeter 9 is mounted on the third oil pipe 5. It will be appreciated that the first flowmeter 8 is in communication with the second fluid line 4 and the second flowmeter 9 is in communication with the third fluid line 5. Specifically, the measurement range of the first flow velocity meter 8 and the second flow velocity meter 9 is 0-5 m/s, and the measurement precision is 0.1. In this embodiment, first velocity of flow meter 8 can real-time detection the velocity of flow of the fluid of the 6 import departments of barrel, second velocity of flow meter 9 can real-time detection the velocity of flow of the fluid of the 6 exits of barrel to improve the convenient degree that buchholz relay detected, improved detection efficiency and detection precision.
In an embodiment, as shown in fig. 1, the testing apparatus for testing a nuclear power plant gas relay further includes a first regulating valve 10 for regulating a flow rate of oil in the second oil pipe 4, and the first regulating valve 10 is installed in the second oil pipe 4. The test device for detecting the nuclear power station gas relay further comprises a second regulating valve 11 for regulating the flow rate of oil in the third oil pipe 5, and the second regulating valve 11 is installed in the third oil pipe 5. It will be appreciated that the first regulating valve 10 is mounted between the two lengths of the second oil line 4 and the second regulating valve 11 is mounted between the two lengths of the third oil line 5. Specifically, when the oil delivery pump 1 is a normal oil pump (i.e. the oil delivery pump 1 does not regulate the flow rate of the oil), the first regulating valve 10 can regulate the flow rate of the oil in the second oil pipe 4, and the second regulating valve 11 can regulate the flow rate of the oil in the third oil pipe 5. In this embodiment, the first regulating valve 10 and the second regulating valve 11 are designed to reduce the manufacturing cost of the test device for detecting the nuclear power station buchholz relay, and improve the convenience of the test device.
In one embodiment, as shown in fig. 1, the testing device for detecting the nuclear power plant gas relay further comprises an inflation pipeline 12 and an isolation valve 13 installed in the inflation pipeline 12, wherein the inflation pipeline 12 is communicated with the inlet of the barrel 6 through the inflation pipeline 12. Preferably, the isolation valve 13 is a one-way check valve. It can be understood that when the oil delivery pump 1 draws oil, the isolation valve 13 is closed, so that the gas in the gas charging mechanism 2 is prevented from influencing the operation of the oil flow gas node of the gas relay. When the inflation mechanism 2 works, the second regulating valve 11 and the isolation valve 13 are opened, the first regulating valve 10 is closed, so that the inflation mechanism 2 sends the gas through the inflation pipeline 12, and the gas and the liquid in the cylinder 6 flow into the tank 7 through the third oil pipe 5. In this embodiment, the isolation valve 13 and the design of the gas charging pipeline 12 improve the convenience of the operation of the test device for detecting the nuclear power station gas relay.
In an embodiment, the testing device for detecting the buchholz relay of the nuclear power plant further comprises a pressure balancer for balancing the pressure in the tank 7, and the pressure balancer is communicated with the tank 7. In the testing process of the gas relay, the pressure in the tank 7 can be increased due to the temperature of the oil and the amount of the gas, and the pressure balancer can ensure that the pressure in the tank 7 is equal to the external atmospheric pressure, so that the safety of the gas relay in the testing process is ensured.
In one embodiment, as shown in fig. 1, the pressure balancer includes a balancing pipe 14 and a balancing valve 15 installed in the balancing pipe 14, and the balancing valve 15 communicates with the tank 7. It can be understood that the opening degree of the balance pipeline 14 is adjusted by adjusting the balance valve 15, so as to ensure that the pressure in the tank 7 is in a proper range, and the safety of the test device for detecting the gas relay of the nuclear power station is ensured.
In an embodiment, the testing device for detecting the nuclear power plant gas relay further comprises an oil injection pipeline (not shown) and an oil injection valve (not shown) installed in the oil injection pipeline, and the oil injection pipeline is communicated with the tank 7. It can be understood that an end of the oil injection pipeline, which is far away from the tank 7, is communicated with an external oil transportation device, and the oil injection pipeline can input oil in the external oil transportation device into the tank 7, so that the tank 7 is ensured to have enough oil.
The test device for detecting the nuclear power station gas relay further comprises an oil discharge pipeline (not shown) and an oil discharge valve (not shown) installed in the oil discharge pipeline, and the oil discharge pipeline is communicated with the bottom of the tank body 7. Understandably, when the test device for detecting the gas relay of the nuclear power station does not perform the test of the gas relay, the oil discharge pipeline can discharge oil in the tank 7 to the greatest extent, so that the cleanliness of the tank 7 is ensured, and the service life of the tank is prolonged.
In an embodiment, the testing apparatus for detecting the buchholz relay of the nuclear power plant further includes a level meter (not shown) for detecting the oil level in the tank 7, and the level meter is communicated with the tank 7. Understandably, nuclear power plant staff can check the height of oil in the pipeline in real time through the liquid level meter, and enough oil is ensured to be in the tank body 7.
The above description is only an example of the testing apparatus for testing the buchholz relay of the nuclear power plant, and is not intended to limit the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A test device for detecting a gas relay of a nuclear power station is characterized by comprising an oil transfer pump, an inflation mechanism, a cylinder body for containing the gas relay and a tank body for containing oil, wherein the inflation mechanism is communicated with an air inlet of the tank body; the test device for detecting the nuclear power station gas relay further comprises a first oil pipe used for communicating the tank body with the oil transfer pump, a second oil pipe used for communicating the oil transfer pump with the cylinder body, and a third oil pipe used for communicating the cylinder body with the tank body.
2. The testing device for detecting the buchholz relay of the nuclear power plant as claimed in claim 1, further comprising a first flow meter for measuring a flow rate of the oil in the second oil pipe, and a second flow meter for measuring a flow rate of the oil in the third oil pipe; the first flow meter is mounted on the second tubing and the second flow meter is mounted on the third tubing.
3. The testing device for testing the buchholz relay of the nuclear power plant according to claim 1, further comprising a first regulating valve for regulating a flow rate of the oil in the second oil pipe, the first regulating valve being installed in the second oil pipe.
4. The testing device for testing the buchholz relay of the nuclear power plant according to claim 1, further comprising a second regulating valve for regulating a flow rate of the oil in the third oil pipe, the second regulating valve being installed in the third oil pipe.
5. The testing device for detecting the buchholz relay of the nuclear power plant as claimed in claim 1, further comprising an inflation pipe and an isolation valve installed in the inflation pipe, wherein the inflation pipe is communicated with the inlet of the barrel through the inflation pipe.
6. The testing device for detecting the buchholz relay of the nuclear power plant as claimed in claim 1, further comprising a pressure balancer for balancing the pressure in the tank, wherein the pressure balancer is communicated with the tank.
7. The testing device for testing the buchholz relay of the nuclear power plant as claimed in claim 6, wherein the pressure balancer includes a balancing pipe and a balancing valve installed in the balancing pipe, the balancing valve communicating with the tank.
8. The testing device for detecting the buchholz relay of the nuclear power plant as claimed in claim 1, further comprising an oil injection pipeline and an oil injection valve installed in the oil injection pipeline, wherein the oil injection pipeline is communicated with the tank body.
9. The testing device for detecting the buchholz relay of the nuclear power plant as claimed in claim 1, further comprising an oil drain pipe and an oil drain valve installed in the oil drain pipe, wherein the oil drain pipe communicates with the bottom of the tank.
10. The testing device for detecting the buchholz relay of the nuclear power plant as claimed in claim 1, further comprising a level meter for detecting the level of oil in the tank, the level meter being communicated with the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122101351.XU CN216310208U (en) | 2021-09-01 | 2021-09-01 | Test device for detecting gas relay of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122101351.XU CN216310208U (en) | 2021-09-01 | 2021-09-01 | Test device for detecting gas relay of nuclear power station |
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| Publication Number | Publication Date |
|---|---|
| CN216310208U true CN216310208U (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122101351.XU Active CN216310208U (en) | 2021-09-01 | 2021-09-01 | Test device for detecting gas relay of nuclear power station |
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2021
- 2021-09-01 CN CN202122101351.XU patent/CN216310208U/en active Active
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