Gas relay contact disconnection capacity detection device and method

Abstract

The invention relates to the technical field of gas relays, in particular to a gas relay contact disconnection capacity detection device and method.The device comprises an oil storage assembly, a heating assembly is arranged at the top of the oil storage assembly, a detection assembly is arranged at the position, close to the top, of the rear side of the oil storage assembly, and a display assembly is arranged above the detection assembly; according to the gas relay contact disconnection capacity detection device, under the cooperation of an oil tank with a liquid level window, the internal oil storage condition is observed in real time, a heating assembly is fixedly installed on the oil tank through a connecting plate, under the cooperation of a temperature display screen, the internal temperature of the oil tank is displayed in real time, and under the cooperation of a heating rod, the oil in the oil tank is subjected to temperature rise cooperation; an oil suction pump in the detection assembly is matched to continuously extract oil in an oil tank, the oil is conveyed into a gas relay through an electromagnetic valve, the speed of the oil quantity passing through the gas relay and a contact resistance value are detected and matched in real time under the matching of a turbine flowmeter and a contact resistance measuring instrument, and the speed and the contact resistance value are displayed in a displayer in real time.

Description

Technical Field

[0001] The invention belongs to the technical field of gas relays, and in particular relates to a gas relay contact disconnection capacity detection device and method. Background Art

[0002] The gas relay is an important safety protection device on the oil-immersed transformer. It is installed on the connecting pipe between the transformer cover and the oil conservator. Under the action of the gas or oil flow generated by the internal fault of the transformer, the signal or trip circuit is connected, so that the relevant device sends out an alarm signal or the transformer is cut off from the power grid to protect the transformer. When a fault occurs inside the transformer, a large amount of gas will be generated or the oil volume will expand. At this time, the oil and gas flow will rush to the oil conservator. The flowing oil and gas flow will cause the gas relay to trip with heavy gas. If there is a slight fault inside the transformer or air enters, the contacts on the gas relay will send out a light gas alarm signal. The invention with announcement number CN114674371B discloses a gas relay detection device, which relates to the technical field of gas relay detection devices, including a lifting column assembly, a sliding column assembly, a vibration-sensing locking structure, an induction circulating oil pump, a U-shaped tube, a simulated oil tank, an induction control assembly, a heater, an oil pressure sensor, an oil temperature sensor, and a three-dimensional scanner. On the basis of multi-faceted positioning and locking of gas relays of different specifications, the scheme automatically simulates the working environment of the gas relay, thereby intelligently detecting and generating the sealing and precision values ​​of the gas relay, making the use of the device simpler and more efficient, and solving the problem that the traditional simulation environment cannot simultaneously detect and automatically generate the sealing and precision values ​​of the gas relay, resulting in cumbersome use; however, the gas relay contact disconnection capacity is not convenient for fast and stable detection and coordination, and is not convenient for real-time recording of the gas relay contact flow rate information, and the overall combination installation of the detection device is not convenient enough. Summary of the invention

[0003] The object of the present invention is to provide a gas relay contact disconnection capacity detection device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: In the first aspect, a gas relay contact disconnection capacity detection device comprises an oil storage assembly, a heating assembly is provided on the top of the oil storage assembly, a detection assembly is provided on the rear side of the oil storage assembly near the top, and a display assembly is provided above the detection assembly; the oil storage assembly comprises an oil tank, and a liquid inlet hopper for adding oil installed on the top of the oil tank; the heating assembly comprises a connecting plate, and a temperature display screen installed on the top of the connecting plate; a temperature sensor is provided on the left side of the upper surface of the connecting plate, and a heating rod is provided on the right side of the upper surface of the connecting plate; the detection assembly comprises a mounting plate, and a fixed plate connected to one side of the mounting plate; an electromagnetic valve and a gas relay are provided on the upper surface of the mounting plate from left to right in sequence, and an oil suction pump is provided on the upper surface of the fixed plate; the display assembly comprises a display, and a single-chip microcomputer installed on the side wall of the display, and the bottom of the display is fixedly connected to the mounting plate.

[0005] Preferably, a liquid level window is provided on the outer wall of the oil tank, and a plurality of support columns are provided near the edge of the lower surface of the oil tank, and the tops of the support columns are bonded and fixed to the bottom of the oil tank.

[0006] In the present invention, the liquid level window is made of tempered glass, which helps outsiders to see the internal oil content through the liquid level window. With the cooperation of the support column, the entire device is supported to increase the overall independent stability.

[0007] Preferably, the bottom of the liquid inlet hopper is welded and fixed to the top of the oil tank, a sealing cover is provided on the top of the liquid inlet hopper, the sealing cover is plugged into and matched with the top of the liquid inlet hopper, and a drain pipe connected to the interior is also provided on the outer wall of the oil tank near the bottom, and a butterfly valve is provided on the drain pipe.

[0008] In the present invention, the provision of the liquid inlet hopper helps to add oil into the oil tank. With the cooperation of the sealing cover, the internal sealing of the liquid inlet hopper is achieved. With the cooperation of the drain pipe, the internal oil discharge and replacement is achieved by controlling the butterfly valve, which also helps the internal cleaning and discharge.

[0009] Preferably, the bottom of the connecting plate is fixedly connected to the top of the fuel tank by screws, the bottom of the temperature display screen is fixedly connected to the connecting plate by screws, the bottom of the temperature sensor passes through the connecting plate and extends into the fuel tank, the top of the temperature sensor is electrically connected to the processing element in the temperature display screen through a wire, the heating rod passes through the connecting plate and extends into the fuel tank, and the heating rod is electrically connected to the processing element in the temperature display screen through a wire.

[0010] In the present invention, the temperature display screen is connected to an external power supply, and the bottom of the temperature sensor extends into the oil tank to detect the internal temperature in real time. When the oil temperature in the oil tank is lower than 20°C, the single chip microcomputer controls the temperature regulating heating rod to adjust the oil temperature to above 20°C.

[0011] Preferably, the mounting plate fits tightly against the outer wall of the oil tank and is welded and fixed, the fixing plate fits tightly against the outer wall of the oil tank and is welded and fixed, the bottom of the oil suction pump is plugged into and matched with the top of the fixing plate and fixedly connected by screws, a protrusion is provided on the top of the oil suction pump, a mounting groove is provided on the top of the protrusion, a frequency converter is provided in the mounting groove, the frequency converter is electrically connected to the processing element on the oil suction pump through a wire, and the oil suction port of the oil suction pump extends to the oil tank through a hose.

[0012] In the present invention, the oil suction pump is connected to the power supply to continuously extract the oil in the oil tank. The single-chip microcomputer controls the frequency converter. With the cooperation of changing the frequency converter, the rotation speed of the oil suction pump can achieve the effect of regulating the oil flow speed in the pipeline. With the cooperation of the protrusion, it is helpful for the frequency converter to be quickly and stably plugged and installed with the oil suction pump.

[0013] Preferably, the bottom of the solenoid valve fits tightly with the top of the mounting plate and is fixedly connected by screws. The oil discharge port of the oil suction pump is connected to the left end of the solenoid valve through a hose. A tray is also provided at the right end of the mounting plate, and the gas relay is installed in the tray.

[0014] In the present invention, the oil discharge from the oil suction pump is controlled in cooperation with the solenoid valve, and the cooperation with the tray helps to hold up gas relays of different sizes.

[0015] Preferably, an electric push rod is provided on the front end surface of the tray, a telescopic arm of the electric push rod passes through the tray and extends to the inside, and a clamping plate is provided at the end of the telescopic arm, and the clamping plate is tightly fitted to one side of the gas relay. In the present invention, an electric push rod is provided and connected to an external power supply, and a user manually controls the extension or shortening of the telescopic arm to adjust the position of the clamping plate, stably clamping and cooperating gas relays of different sizes, thereby increasing the stability of the installation.

[0016] Preferably, the right end of the solenoid valve is connected to the access port of the gas relay through a hose, an indicator light is provided on the top of the gas relay, and a contact resistance meter is also provided on the mounting plate at one side of the gas relay. The contact resistance meter is electrically connected to the processing element on the gas relay through a wire, and the oil drain port of the gas relay is connected to a turbine flowmeter through a pipeline, and the end of the turbine flowmeter is connected to the inside of the oil tank through a hose.

[0017] In the present invention, the solenoid valve is connected to the gas relay, which helps to connect the discharged oil into the gas relay. When the oil flow rate reaches a certain value, the baffle in the tested gas relay is actuated, and the reed contact inside the gas relay is energized. At this time, the indicator light is on, and the single-chip microcomputer records the flow rate value of the instantaneous action. The contact resistance measuring instrument measures the contact resistance of the reed contact, and then the oil suction pump stops to complete the heavy gas flow rate detection. Information such as the flow rate and contact resistance value will be displayed on the display.

[0018] Preferably, the bottom of the display is fixedly connected to the mounting plate by screws, the single-chip microcomputer is fixedly connected to the display by screws, and the single-chip microcomputer is electrically connected to the contact resistance measuring instrument, the turbine flowmeter, the solenoid valve, and the frequency converter respectively through wires.

[0019] In the present invention, the display is installed to display the detected information in real time, and with the cooperation of the single-chip microcomputer, it is helpful to continuously perform corresponding regulation and coordination on the contact resistance measuring instrument, the turbine flow meter, the solenoid valve, and the frequency converter.

[0020] In a second aspect, a working method of a gas relay contact disconnection capacity detection device comprises the following steps: When the contact disconnection capacity test is required, fill the external oil from the liquid inlet hopper into the oil tank, and observe the liquid level window; connect the power supply of the oil suction pump to continuously pump the oil in the oil tank and deliver it to the gas relay; fill the entire circuit and the gas relay being tested with transformer oil; Adjust the speed of the oil suction pump to gradually increase the oil flow rate in the pipeline from 0; when the oil flow rate reaches the set value, the baffle of the test gas relay will act, the reed contact will close, and the single-chip microcomputer will record the flow rate value of the instantaneous action; the oil suction pump will stop working, and the heavy gas flow rate detection will be completed; information such as flow rate and contact resistance value will be displayed on the monitor.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges an oil storage component, and in cooperation with an oil tank with a liquid level window, the internal oil storage status is observed in real time. The heating component is fixedly installed on the oil tank through a connecting plate, and in cooperation with a temperature display screen, the internal temperature of the oil tank is displayed in real time. The temperature sensor detects the internal temperature of the oil tank and transmits the detection data to the temperature display screen. In cooperation with the heating rod, the oil in the oil tank is heated. In cooperation with the oil suction pump in the detection component, the oil in the oil tank is continuously processed and extracted, and then transported to the gas relay through an electromagnetic valve. In cooperation with a turbine flowmeter and a contact resistance measuring instrument, the speed of the oil passing through the gas relay and the contact resistance value are detected in real time and displayed in real time on the display.

[0022] 2. The present invention sets a single-chip microcomputer to perform corresponding control and coordination on the oil suction pump, frequency converter, solenoid valve, contact resistance measuring instrument, turbine flowmeter and frequency converter, so as to realize the corresponding opening of the oil pump outlet solenoid valve, control the frequency converter to adjust the oil pump speed, so that the oil flow rate in the pipeline gradually increases from 0. The single-chip microcomputer collects the instantaneous flow pulse signal of the turbine flowmeter and performs calculation and processing on the collected flow pulse signal. When the oil flow rate reaches a certain value, the baffle of the test gas relay is actuated and the reed contact is energized. At this time, the indicator light is on, and the single-chip microcomputer records the flow rate value of the instantaneous action and measures the contact resistance of the reed contact. Then the oil pump stops to complete the heavy gas flow rate detection.

[0023] 3. The present invention helps to hold up the entire device by setting a support column, and with the cooperation of the liquid inlet bucket, it helps to add oil. The sealing cover seals the liquid inlet bucket to reduce the impact of external environment on internal interference. The drain pipe with a butterfly valve helps to quickly discharge the internal oil. With the cooperation of the mounting plate and the fixed plate, support and cooperation between the components are achieved, increasing the stability of the installation with the oil tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the oil storage assembly of the present invention; Figure 3 It is a schematic diagram of the oil tank structure of the present invention; Figure 4 It is a schematic diagram of the structure of the heating component of the present invention; Figure 5 It is a schematic diagram of the structure of the detection component of the present invention; Figure 6 It is a schematic diagram of the combined structure of the gas relay and the tray of the present invention.

[0025] The meaning of each number in the figure is: 1. Oil storage assembly; 10. Oil tank; 11. Liquid level window; 12. Support column; 13. Drain pipe; 130. Butterfly valve; 14. Liquid inlet hopper; 140. Sealing cover; 2. Heating assembly; 20. Connecting plate; 21. Temperature display screen; 22. Temperature sensor; 23. Heating rod; 3. Detection assembly; 30. Mounting plate; 300. Tray; 301. Electric push rod; 302. Clamp; 31. Fixing plate; 310. Oil suction pump; 311. Bump; 312. Mounting slot; 313. Frequency converter; 32. Solenoid valve; 33. Gas relay; 330. Indicator light; 34. Turbine flowmeter; 35. Contact resistance measuring instrument; 4. Display component; 40. Display; 41. Single chip microcomputer. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0027] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit exemplary embodiments according to the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figure 1-Figure 6 , this embodiment provides a technical solution: A gas relay contact disconnection capacity detection device includes an oil storage component 1, a heating component 2 is provided on the top of the oil storage component 1, a detection component 3 is provided near the top of the rear side of the oil storage component 1, and a display component 4 is provided above the detection component 3. The oil storage component 1 includes an oil tank 10 and a liquid inlet hopper 14 installed on the top of the oil tank 10 for adding oil, a liquid level window 11 is provided on the outer wall of the oil tank 10, and a plurality of support columns 12 are provided near the edge of the lower surface of the oil tank 10, and the top of the support column 12 is bonded and fixed to the bottom of the oil tank 10.

[0031] In the present invention, the liquid level window 11 is made of tempered glass, which helps outsiders to see the internal oil content through the liquid level window 11. With the cooperation of the support column 12, the entire device is supported to increase the overall independent stability.

[0032] Furthermore, the bottom of the liquid inlet hopper 14 is welded and fixed to the top of the oil tank 10, and a sealing cover 140 is provided on the top of the liquid inlet hopper 14. The sealing cover 140 is plugged into the top of the liquid inlet hopper 14. A drain pipe 13 connected to the interior is also provided on the outer wall of the oil tank 10 near the bottom, and a butterfly valve 130 is provided on the drain pipe 13.

[0033] In the present invention, the provision of the liquid inlet hopper 14 helps to add oil into the oil tank 10. With the cooperation of the sealing cover 140, the internal sealing of the liquid inlet hopper 14 is achieved. With the cooperation of the drain pipe 13, the internal oil discharge and replacement is achieved by controlling the butterfly valve 130, which helps the internal cleaning and discharge.

[0034] Specifically, the heating assembly 2 includes a connecting plate 20 and a temperature display screen 21 installed on the top of the connecting plate 20, a temperature sensor 22 is provided on the left side of the upper surface of the connecting plate 20, a heating rod 23 is provided on the right side of the upper surface of the connecting plate 20, the bottom of the connecting plate 20 is fixedly connected to the top of the oil tank 10 by screws, the bottom of the temperature display screen 21 is fixedly connected to the connecting plate 20 by screws, the bottom of the temperature sensor 22 passes through the connecting plate 20 and extends into the interior of the oil tank 10, the top of the temperature sensor 22 is electrically connected to the processing element in the temperature display screen 21 through a wire, the heating rod 23 passes through the connecting plate 20 and extends into the interior of the oil tank 10, and the heating rod 23 is electrically connected to the processing element in the temperature display screen 21 through a wire.

[0035] In the present invention, the temperature display screen 21 is connected to an external power supply, and the bottom of the temperature sensor 22 extends into the oil tank 10 to detect the internal temperature in real time. When the oil temperature in the oil tank 10 is lower than 20°C, the single-chip microcomputer 41 controls the temperature-adjusting heating rod 23 to adjust the oil temperature to above 20°C.

[0036] It should be noted that the detection component 3 includes a mounting plate 30 and a fixing plate 31 connected to one side of the mounting plate 30, and a solenoid valve 32 and a gas relay 33 are provided on the upper surface of the mounting plate 30 from left to right in sequence. The mounting plate 30 is tightly fitted to the outer wall of the oil tank 10 and welded and fixed, and the fixing plate 31 is tightly fitted to the outer wall of the oil tank 10 and welded and fixed. The bottom of the oil suction pump 310 is plugged into the top of the fixing plate 31 and fixed by screws. A protrusion 311 is provided on the top of the oil suction pump 310, and a mounting groove 312 is opened on the top of the protrusion 311. A frequency converter 313 is provided in the mounting groove 312. The frequency converter 313 is electrically connected to the processing element on the oil suction pump 310 through a wire, and the oil suction port of the oil suction pump 310 extends to the oil tank 10 through a hose.

[0037] In the present invention, the oil suction pump 310 is powered on to continuously extract the oil in the oil tank 10, and the single-chip computer 41 controls the frequency converter 313. With the cooperation of changing the frequency converter 313, the rotation speed of the oil suction pump 310 can achieve the effect of regulating the oil flow speed in the pipeline. With the cooperation of the protrusion 311, it is helpful for the frequency converter 313 to be quickly and stably plugged and installed with the oil suction pump 310.

[0038] Secondly, the bottom of the solenoid valve 32 fits tightly with the top of the mounting plate 30 and is fixedly connected by screws. The oil discharge port of the oil suction pump 310 is connected to the left end of the solenoid valve 32 through a hose. A tray 300 is also provided at the right end of the mounting plate 30, and the gas relay 33 is installed in the tray 300.

[0039] In the present invention, the solenoid valve 32 cooperates to control the oil discharge of the oil suction pump 310 , and the tray 300 cooperates to help hold up gas relays 33 of different sizes.

[0040] Specifically, an electric push rod 301 is provided on the front end surface of the tray 300 , and a telescopic arm of the electric push rod 301 passes through the tray 300 and extends to the inside, and a clamping plate 302 is provided at the end of the telescopic arm, and the clamping plate 302 is tightly fitted to one side of the gas relay 33 . In the present invention, the electric push rod 301 is set and connected to an external power supply, and the user manually controls the extension or shortening of the telescopic arm to adjust the position of the clamping plate 302, stably clamping and cooperating with gas relays 33 of different sizes, thereby increasing the stability of the installation.

[0041] Furthermore, the right end of the solenoid valve 32 is connected to the access port of the gas relay 33 through a hose, an indicator light 330 is provided on the top of the gas relay 33, and a contact resistance meter 35 is also provided on the mounting plate 30 at one side of the gas relay 33. The contact resistance meter 35 is electrically connected to the processing element on the gas relay 33 through a wire, and the oil discharge port of the gas relay 33 is connected to a turbine flowmeter 34 through a pipeline, and the end of the turbine flowmeter 34 is connected to the inside of the oil tank 10 through a hose.

[0042] In the present invention, the solenoid valve 32 is connected to the gas relay 33, which helps to connect the discharged oil into the gas relay 33. When the oil flow rate reaches a certain value, the baffle in the tested gas relay 33 is actuated, and the reed contact inside the gas relay 33 is energized. At this time, the indicator light 330 is on, and the single-chip computer 41 records the flow rate value of the instantaneous action. The contact resistance meter 35 measures the contact resistance of the reed contact, and then the oil suction pump 310 stops to complete the heavy gas flow rate detection. Information such as the flow rate and contact resistance value will be displayed on the display 40.

[0043] It is worth adding that an oil suction pump 310 is disposed on the upper surface of the fixing plate 31 , the display assembly 4 includes a display 40 and a single chip computer 41 mounted on the side wall of the display 40 , and the bottom of the display 40 is fixedly connected to the mounting plate 30 .

[0044] Secondly, the bottom of the display 40 is fixedly connected to the mounting plate 30 by screws, the single-chip microcomputer 41 is fixedly connected to the display 40 by screws, and the single-chip microcomputer 41 is electrically connected to the contact resistance measuring instrument 35, the turbine flowmeter 34, the solenoid valve 32, and the inverter 313 through wires.

[0045] In the present invention, the display 40 is installed to display the detected information in real time, and with the cooperation of the single chip computer 41, it helps to continuously adjust and coordinate the contact resistance measuring instrument 35, the turbine flow meter 34, the solenoid valve 32, and the frequency converter 313 accordingly.

[0046] When the gas relay contact disconnection capacity detection device of this embodiment is used, the user first installs the liquid level window 11 on the oil tank 10 with the support column 12, the discharge pipe 13 with the butterfly valve 130 is fixed to the oil tank 10, the liquid inlet hopper 14 with the sealing cover 140 is plugged and matched with the top of the oil tank 10, the connecting plate 20 with the temperature display screen 21 is fixedly connected to the top of the oil tank 10, the temperature sensor 22 is installed on the connecting plate 20, and the bottom of the temperature sensor 22 passes through the connecting plate 20 and extends into the oil tank 10, and the heating rod 23 is installed on the connecting plate 20, and the bottom of the heating rod 23 passes through the connecting plate 20 and extends into the oil tank 10; The mounting plate 30 and the fixing plate 31 are fixed to the oil tank 10 in sequence, and then the oil suction pump 310 with the frequency converter 313 is fixed to the fixing plate 31, the solenoid valve 32 is fixed to the mounting plate 30, the tray 300 with the electric push rod 301 is combined and fixed with the mounting plate 30, and then the gas relay 33 is placed in the tray 300, the telescopic arm of the electric push rod 301 is controlled to extend, and the clamping plate 302 is clamped to the gas relay 33, and then one end of the solenoid valve 32 is connected to the oil discharge port of the oil suction pump 310, and the other end is connected to the oil discharge port of the oil suction pump 310. The gas relay 33 is connected to the connection port, the indicator light 330 is fixed on the gas relay 33, the turbine flowmeter 34 is connected to the exhaust pipe of the gas relay 33, and the contact resistance measuring instrument 35 is electrically connected to the corresponding components on the gas relay 33 through a wire, and the contact resistance measuring instrument 35, the turbine flowmeter 34, the solenoid valve 32, and the inverter 313 are electrically connected to the single-chip computer 41 through a wire at the left rear, and the single-chip computer 41 is electrically connected to the internal components of the display 40 through a wire, and the detected numerical information is displayed in real time through the display 40; A working method of a gas relay contact disconnection capacity detection device comprises the following steps: When it is necessary to detect the contact disconnection capacity, fill the external oil from the liquid inlet hopper 14 into the oil tank 10, and observe the liquid level window 11; the oil suction pump 310 is powered on to continuously pump the oil in the oil tank 10 and deliver it to the gas relay 33; fill the entire circuit and the gas relay 33 under test with transformer oil; adjust the speed of the oil suction pump 310 to gradually increase the oil flow rate in the pipeline from 0; when the oil flow rate reaches the set value, the baffle of the gas relay 33 under test moves, the reed contact is energized, and the single-chip computer 41 records the flow rate value of the instantaneous action; the oil suction pump 310 stops working, and the heavy gas flow rate detection is completed; information such as the flow rate and contact resistance value will be displayed on the display 40.

[0047] Specific: When the contact disconnection capacity test is required, the external oil is filled into the oil tank 10 from the liquid inlet hopper 14. Under the observation of the liquid level window 11, the internal oil content is understood in real time. The oil suction pump 310 is powered on to continuously pump the oil in the oil tank 10 and deliver it to the gas relay 33 through the solenoid valve 32. Before the test, the entire circuit and the gas relay 33 to be tested are filled with transformer oil. The internal air is discharged first, and then the solenoid valve 32 at the outlet of the oil suction pump 310 is opened. The control system adjusts the speed of the oil suction pump 310 through the frequency converter 313 to change the oil flow speed in the pipeline from 0 to 10. Gradually increase, the single chip computer 41 collects the instantaneous flow pulse signal of the turbine flowmeter 34, and performs calculation processing on the collected flow pulse signal. When the oil flow rate reaches a certain value, the baffle of the test gas relay 33 is actuated, and the reed contact is energized. At this time, the indicator light 330 is on, and the single chip computer 41 records the flow rate value of the instantaneous action. The contact resistance measuring instrument 35 measures the contact resistance of the reed contact, and then the oil suction pump 310 stops to complete the heavy gas flow rate detection. The flow rate and contact resistance value and other information will be displayed on the display 40. The overall combination is easy to install and convenient for assembly operations.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A gas relay contact disconnection capacity detection device, characterized in that: The oil storage assembly (1) comprises an oil storage assembly (1), a heating assembly (2) is provided on the top of the oil storage assembly (1), a detection assembly (3) is provided on the rear side of the oil storage assembly (1) near the top, and a display assembly (4) is provided above the detection assembly (3); the oil storage assembly (1) comprises an oil tank (10), and a liquid inlet hopper (14) installed on the top of the oil tank (10) for adding oil; the heating assembly (2) comprises a connecting plate (20), and a temperature display screen (21) installed on the top of the connecting plate (20); a temperature sensor (22) is provided on the left side of the upper surface of the connecting plate (20) A heating rod (23) is provided on the right side of the upper surface of the connecting plate (20); the detection component (3) comprises a mounting plate (30) and a fixing plate (31) connected to one side of the mounting plate (30); a solenoid valve (32) and a gas relay (33) are provided on the upper surface of the mounting plate (30) in sequence from left to right, and an oil suction pump (310) is provided on the upper surface of the fixing plate (31); the display component (4) comprises a display (40) and a single-chip microcomputer (41) mounted on the side wall of the display (40); the bottom of the display (40) is fixedly connected to the mounting plate (30).

2. The gas relay contact disconnection capacity detection device according to claim 1, characterized in that: A liquid level window (11) is provided on the outer wall of the oil tank (10), and a plurality of support columns (12) are provided on the lower surface of the oil tank (10) near the edge, wherein the top of the support column (12) is bonded and fixed to the bottom of the oil tank (10).

3. The gas relay contact disconnection capacity detection device according to claim 1, characterized in that: The bottom of the liquid inlet hopper (14) is welded and fixed to the top of the oil tank (10); a sealing cover (140) is provided on the top of the liquid inlet hopper (14); the sealing cover (140) is plugged into and matched with the top of the liquid inlet hopper (14); a liquid discharge pipe (13) communicating with the interior is also provided on the outer wall of the oil tank (10) near the bottom; a butterfly valve (130) is provided on the liquid discharge pipe (13).

4. The gas relay contact disconnection capacity detection device according to claim 1, characterized in that: The bottom of the connecting plate (20) is fixedly connected to the top of the oil tank (10) by screws, the bottom of the temperature display screen (21) is fixedly connected to the connecting plate (20) by screws, the bottom of the temperature sensor (22) passes through the connecting plate (20) and extends into the interior of the oil tank (10), the top of the temperature sensor (22) is electrically connected to a processing element in the temperature display screen (21) by a wire, the heating rod (23) passes through the connecting plate (20) and extends into the interior of the oil tank (10), and the heating rod (23) is electrically connected to a processing element in the temperature display screen (21) by a wire.

5. The gas relay contact disconnection capacity detection device according to claim 1, characterized in that: The mounting plate (30) is tightly fitted to the outer wall of the oil tank (10) and is fixed by welding. The fixing plate (31) is tightly fitted to the outer wall of the oil tank (10) and is fixed by welding. The bottom of the oil suction pump (310) is plugged into and matched with the top of the fixing plate (31) and is fixedly connected by screws. A convex block (311) is provided on the top of the convex block (311). A mounting groove (312) is provided on the top of the convex block (311). A frequency converter (313) is provided in the mounting groove (312). The frequency converter (313) is electrically connected to a processing element on the oil suction pump (310) via a wire. The oil suction port of the oil suction pump (310) extends into the oil tank (10) via a hose.

6. The gas relay contact breaking capacity detection device according to claim 5, characterized in that: The bottom of the solenoid valve (32) is tightly fitted to the top of the mounting plate (30) and is fixedly connected by screws; the oil discharge port of the oil suction pump (310) is connected to the left end of the solenoid valve (32) via a hose; a tray (300) is also provided at the right end of the mounting plate (30), and the gas relay (33) is installed in the tray (300).

7. The gas relay contact breaking capacity detection device according to claim 6, characterized in that: An electric push rod (301) is provided on the front end surface of the tray (300), a telescopic arm of the electric push rod (301) passes through the tray (300) and extends into the interior, and a clamping plate (302) is provided at the end of the telescopic arm, and the clamping plate (302) is tightly fitted to one side of the gas relay (33).

8. The gas relay contact breaking capacity detection device according to claim 6, characterized in that: The right end of the solenoid valve (32) is connected to the access port of the gas relay (33) through a hose, an indicator light (330) is provided on the top of the gas relay (33), a contact resistance measuring instrument (35) is also provided on the mounting plate (30) at one side of the gas relay (33), the contact resistance measuring instrument (35) is electrically connected to a processing element on the gas relay (33) through a lead, the oil outlet of the gas relay (33) is connected to a turbine flowmeter (34) through a pipeline, and the end of the turbine flowmeter (34) is connected to the inside of the oil tank (10) through a hose.

9. The gas relay contact breaking capacity detection device according to claim 8, characterized in that: The bottom of the display (40) is fixedly connected to the mounting plate (30) via screws, the single-chip computer (41) is fixedly connected to the display (40) via screws, and the single-chip computer (41) is electrically connected to the contact resistance measuring instrument (35), the turbine flowmeter (34), the solenoid valve (32), and the frequency converter (313) via wires.

10. The working method of the gas relay contact disconnection capacity detection device according to any one of claims 1 to 9, characterized in that: The steps include: When the contact disconnection capacity test is required, external oil is filled into the oil tank (10) from the liquid inlet hopper (14), and the liquid level window (11) is observed; the oil suction pump (310) is powered on to continuously pump the oil in the oil tank (10) and deliver it to the gas relay (33); so that the entire circuit and the gas relay (33) to be tested are filled with transformer oil; The rotation speed of the oil suction pump (310) is adjusted so that the oil flow speed in the pipeline gradually increases from 0; when the oil flow speed reaches the set value, the damper of the test gas relay (33) is actuated, the reed contact is energized, and the single chip computer (41) records the flow speed value of the instantaneous action; the oil suction pump (310) stops working, and the heavy gas flow speed detection is completed; information such as the flow speed and contact resistance value is displayed on the display (40).

Images