Automatic sampling device and sampling method for transformer

Abstract

The invention discloses a transformer automatic sampling device which comprises a transformer body, the transformer body is communicated with a gas relay through an oil pipe, the gas relay is communicated with an oil conservator, the top of the gas relay is communicated with a gas collecting box through a pipe, the top of the gas collecting box is connected with a gas taking unit, and the gas taking unit is connected with a gas detector. The bottom of the transformer body is connected with a first oil taking unit, the first oil taking unit is connected with a first oil sample detector, the bottom of the gas collecting box is connected with a second oil taking unit, the second oil taking unit is connected with a second oil sample detector, a first control circuit is arranged in the gas relay, and the gas collecting box is provided with a second control circuit; the invention further comprises an automatic sampling method of the transformer, and the problem that in the prior art, when the transformer operates abnormally, gas needs to be sampled manually, and unsafety is caused is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of transformer equipment, and particularly relates to a transformer automatic sampling device and a transformer automatic sampling method. BACKGROUND

[0002] In the prior art, transformer sampling in operation is mainly achieved by personnel going to the transformer to take oil and gas samples from the detection holes of the transformer. If a large amount of gas appears in the gas relay of the transformer in operation, or even the gas causes light gas action, an alarm signal is sent, and personnel need to go to the scene to take samples, respectively taking oil samples from the detection holes of the transformer body and taking gas samples from the gas collection box, and then performing chemical analysis. When a large amount of gas in the transformer causes light gas action, the internal defect of the transformer is likely to develop into a more serious fault, which may cause the transformer to spray oil or be damaged, and if the detection personnel are taking samples, personnel casualties may occur. SUMMARY

[0003] The present application provides a transformer automatic sampling device, which solves the problem of safety when taking gas samples manually when the transformer is operating abnormally.

[0004] Another object of the present application is to provide a transformer automatic sampling method, which solves the problem of not timely oil and gas sampling when the transformer is sampled in the prior art.

[0005] The technical solution adopted by the present application is a transformer automatic sampling device, comprising a transformer body, the transformer body being communicated with a gas relay through an oil pipe, the gas relay being communicated with an oil storage tank, the top of the gas relay being communicated with a gas collection box through a pipe, the top of the gas collection box being connected with a gas taking unit, the gas taking unit being connected with a gas detector, the bottom of the transformer body being connected with a first oil taking unit, the first oil taking unit being connected with a first oil sample detector, the bottom of the gas collection box being connected with a second oil taking unit, the second oil taking unit being connected with a second oil sample detector, the gas relay being provided with a first control circuit, and the gas collection box being provided with a second control circuit.

[0006] The present application also has the following characteristics: The first control circuit comprises a power supply, the power supply being connected with a first resistor, two first contacts, a normally closed auxiliary switch of a first circuit breaker and a closing coil of the first circuit breaker through wires in sequence, the closing coil of the first circuit breaker being grounded; the gas relay is provided with a first floating ball, the first floating ball being connected with a U-shaped first metal arm through a first insulating rod, the side wall of the first insulating rod being connected with a fixing block, the fixing block being connected with the inner wall of the gas relay, and the two first contacts being in contact with the first metal arm.

[0007] The second floating ball is connected with a second metal arm in the shape of U through a second insulating rod, two opposite insulating pieces are connected to the upper side wall of the second metal arm, a connecting rod is connected to the second insulating rod, and the connecting rod is connected to the inner wall of the gas collecting box.

[0008] The gas taking unit comprises a second electromagnetic valve, the second electromagnetic valve is communicated with the gas collecting box through a gas pipe, the second electromagnetic valve is connected with a second one-way valve through the gas pipe, the second one-way valve is connected with a gas sample detector, the second electromagnetic valve is connected with a second control unit, one end of the second control unit is grounded, the other end of the second control unit is connected with a second light emitting diode, the second light emitting diode is connected with a second circuit breaker, the second circuit breaker is connected with a third resistor, and the third resistor is connected with a power supply.

[0009] The first oil taking unit comprises a third electromagnetic valve, the third electromagnetic valve is connected with the transformer body through an oil pipe, the third electromagnetic valve is connected with a third one-way valve through the oil pipe, the third one-way valve is connected with a second oil sample detector, the third electromagnetic valve is connected with a third control unit, the third control unit is connected with a first light emitting diode, the first light emitting diode is connected with a first circuit breaker, the first circuit breaker comprises a first circuit breaker normally closed auxiliary switch and a first circuit breaker normally open auxiliary switch, the first circuit breaker is connected with a second resistor, and the second resistor is connected with a power supply.

[0010] The second oil taking unit comprises a first electromagnetic valve, the first electromagnetic valve is connected with the gas collecting box through an oil pipe, the first electromagnetic valve is connected with a first one-way valve through the oil pipe, the first one-way valve is connected with a first oil sample detector, the first electromagnetic valve is connected with a first electromagnetic valve control unit, the first electromagnetic valve control unit is connected with a first light emitting diode, the first light emitting diode is connected with a first circuit breaker, the first circuit breaker is connected with a second resistor, and the second resistor is connected with a power supply.

[0011] Another technical solution adopted by the present application is a transformer automatic sampling method, according to a transformer automatic sampling device, comprising the following operation steps: Step 1, open the transformer body and the gas relay; Step 2, observe the color of the first light-emitting diode and the second light-emitting diode, and judge the working state of the transformer body according to the color change; Step 3, when the transformer body is in an abnormal operating state, the oil and gas in the transformer body are sampled by the first oil sampling unit, the second oil sampling unit and the gas sampling unit to obtain the sampling sample.

[0012] The feature of another technical solution of the present application is also: The working state in step 2 includes the normal operating state of the transformer body, the automatic oil sampling state and the automatic gas sampling state; the normal operating state is that the first light-emitting diode and the second light-emitting diode are extinguished; the automatic oil sampling state is that the first light-emitting diode is turned on and emits light and the second light-emitting diode is extinguished; the automatic gas sampling state is that the first light-emitting diode is extinguished and the second light-emitting diode is turned on and emits light.

[0013] The automatic oil sampling state is specifically: First, gas appears in the transformer body, the gas is gathered in the gas relay through the oil pipe, the oil level in the gas relay decreases, the first floating ball decreases synchronously with the oil level of the gas relay, the first metal arm rises until it contacts the first contact, and the first control circuit is turned on; Secondly, there is current in the closing coil of the first circuit breaker, which converts the first circuit breaker from the open state to the closed state, at this time the normally closed auxiliary switch of the first circuit breaker is in the open state, and the first control circuit is disconnected; Then, since the first circuit breaker is in the closed state, the circuit composed of the power supply, the second resistor, the first circuit breaker, the first light-emitting diode and the third control unit is turned on, at this time, the circuit composed of the power supply, the second resistor, the first circuit breaker, the first light-emitting diode and the first control circuit is turned on; the first light-emitting diode is turned on and emits light; the third electromagnetic valve and the third one-way valve control the oil flow of the transformer body to the second oil sample detector; the first electromagnetic valve and the first one-way valve control the oil flow of the gas collection box to the first oil sample detector; Finally, the second circuit breaker is in the open state, the circuit composed of the power supply, the third resistor, the second circuit breaker, the second light-emitting diode and the second control unit is in the open state, and the second light-emitting diode is extinguished; The automatic gas sampling state is specifically: When the oil level in the gas collecting box decreases, the gas in the gas relay enters the gas collecting box along the oil pipe, and under the lever action of the second floating ball and the second metal arm, the second metal arm is in contact with the second contact to conduct; the second circuit breaker is in an open state, and the normally closed auxiliary switch of the second circuit breaker is in a closed state; the closing coil of the second circuit breaker has a current passing through, and under the action of the closing coil of the second circuit breaker, the second circuit breaker is switched from the open state to the closed state; the normally closed auxiliary switch of the second circuit breaker is in an open state; since the first circuit breaker is in the closed state, the normally open auxiliary switch of the first circuit breaker is in the closed state; the opening coil of the first circuit breaker has a current passing through, and under the action of the opening coil of the first circuit breaker, the first circuit breaker is switched from the closed state to the open state; the normally open auxiliary switch of the first circuit breaker is in the open state; the first light emitting diode is extinguished; at this time, the third electromagnetic valve is in a closed state, the oil in the transformer body stops flowing to the second oil sample detector, and the oil in the gas collecting box stops flowing to the first oil sample detector; the second light emitting diode is lighted, and the gas in the gas collecting box flows to the gas sample detector.

[0014] The sampling sample in step 3 is input into the first oil sample detector, the second oil sample detector and the gas detector for detection to obtain detection results, and the defect type when the transformer body is in an abnormal running state is judged according to the detection results.

[0015] The beneficial effects of the present application are: The present application integrates the first oil taking unit, the second oil taking unit and the gas taking unit, and is matched with the gas detector, the oil sample detector and the control circuit to construct an automatic sampling and detection system, without manual close operation. The color change of the light emitting diode can quickly judge the running state of the transformer, and the automatic sampling and detection can greatly improve the fault response efficiency; on the other hand, personnel do not need to approach the dangerous area throughout, which fundamentally eliminates the safety hidden danger, protects the life safety of the operation and maintenance personnel, and can also more timely find and handle the internal defects of the transformer, avoiding further expansion of the fault. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the transformer automatic sampling device of the present application; Figure 2 is a structural schematic view of the first control circuit in the transformer automatic sampling device of the present application; Figure 3 is a structural schematic view in the gas relay in the transformer automatic sampling device of the present application; Figure 4 is a structural schematic view in the gas collecting box in the transformer automatic sampling device of the present application; Figure 5 is a structural schematic view of the second control circuit in the transformer automatic sampling device of the present application; Figure 6is a structural schematic view of a gas taking unit in the transformer automatic sampling device of the present application; Figure 7 is a structural schematic view of a first oil taking unit in the transformer automatic sampling device of the present application; Figure 8 is a structural schematic view of a second oil taking unit in the transformer automatic sampling device of the present application.

[0017] In the figure, 1. transformer body, 2. gas relay, 3. oil storage tank, 4. gas collection box, 5. gas taking unit, 501. second electromagnetic valve, 502. second check valve, 503. gas sample detector, 504. second control unit, 505. second light emitting diode, 506. second circuit breaker, 507. third resistor, 6. gas detector, 7. first oil taking unit, 701. third electromagnetic valve, 702. third check valve, 703. second oil sample detector, 704. third control unit, 705. first light emitting diode, 706. first circuit breaker, 707. second resistor, 8. first oil sample detector, 9. first control circuit, 901. power supply, 902. first resistor, 903. first contact, 904. normally closed auxiliary switch of the first circuit breaker, 905. closing coil of the first circuit breaker, 906. first floating ball, 907. first metal arm, 908. first insulating rod, 909. fixed block, 10. second control circuit, 1001. second floating ball, 1002. second insulating rod, 1003. second metal arm, 1004. insulating piece, 1005. second contact, 1006. third contact, 1007. normally open auxiliary switch of the first circuit breaker, 1008. normally closed auxiliary switch of the second circuit breaker, 1009. opening coil of the first circuit breaker, 1010. closing coil of the second circuit breaker, 1011. normally open auxiliary switch of the second circuit breaker, 1012. opening coil of the second circuit breaker, 1013. connecting rod, 11. second oil taking unit, 1101. first electromagnetic valve, 1102. first check valve, 1103. first electromagnetic valve control unit. DETAILED DESCRIPTION

[0018] The present application will be described in detail below in combination with the drawings and specific embodiments.

[0019] The transformer automatic sampling device of the present application, such as Figure 1As shown, including transformer body 1, transformer body 1 is communicated with gas relay 2 through oil pipe, gas relay 2 is communicated with oil storage tank 3, gas relay 2 top is communicated with gas collection box 4 through pipe, gas collection box 4 top is connected with gas taking unit 5, gas taking unit 5 is connected with gas detector 6, transformer body 1 bottom is connected with first oil taking unit 7, first oil taking unit 7 is connected with first oil sample detector 8, gas collection box 4 bottom is connected with second oil taking unit 11, second oil taking unit 11 is connected with second oil sample detector 703, gas relay 2 is provided with first control circuit 9, gas collection box 4 is provided with second control circuit 10.

[0020] First control circuit 9 includes power supply 901, power supply 901 is connected with first resistor 902, two first contact points 903, first circuit breaker auxiliary switch 904 and first circuit breaker closing coil 905 in turn through wires, first circuit breaker closing coil 905 is grounded, as Figure 2 As shown, first floating ball 906 is arranged in gas relay 2, first floating ball 906 is connected with first metal arm 907 in U shape through first insulating rod 908, first insulating rod 908 side wall is connected with fixed block 909, fixed block 909 is connected with inner wall of gas relay 2, two first contact points 903 are in contact with first metal arm 907, as Figure 3 As shown.

[0021] Second floating ball 1001 is arranged in gas collection box 4, second floating ball 1001 is connected with second metal arm 1003 in U shape through second insulating rod 1002, two insulating parts 1004 are connected with second metal arm 1003 upper side wall, second insulating rod 1002 is connected with connecting rod 1013, connecting rod 1013 is connected with inner wall of gas collection box 4, as Figure 4The second control circuit 10 includes two positionally opposite second contacts 1005 and two positionally opposite third contacts 1006, the third contacts 1006 and the second contacts 1005 are connected with the first resistor 902, the two second contacts 1005 are matched with the side wall of the second metal arm 1003 close to the second floating ball 1001, the two third contacts 1006 are matched with the side wall of the second metal arm 1003 away from the second floating ball 1001, the insulating piece 1004 is located on the second metal arm 1003 between the second contacts 1005 and the third contacts 1006; the second contacts 1005 are arranged at a position higher than the position of the third contacts 1006, the second contacts 1005 are respectively connected with the normally open auxiliary switch 1007 of the first circuit breaker and the normally closed auxiliary switch 1008 of the second circuit breaker through wires, the normally open auxiliary switch 1007 of the first circuit breaker is connected with the tripping coil 1009 of the first circuit breaker, the tripping coil 1009 of the first circuit breaker is grounded, the normally closed auxiliary switch 1008 of the second circuit breaker is connected with the closing coil 1010 of the second circuit breaker, the closing coil 1010 of the second circuit breaker is grounded; the third contacts 1006 are sequentially connected with the normally open auxiliary switch 1011 of the second circuit breaker and the tripping coil 1012 of the second circuit breaker, the tripping coil 1012 of the second circuit breaker is grounded, as shown in Figure 5

[0022] As shown in Figure 6 The gas taking unit 5 includes a second electromagnetic valve 501, the second electromagnetic valve 501 is communicated with the gas collecting box 4 through a gas pipe, the second electromagnetic valve 501 is connected with a second one-way valve 502 through a gas pipe, the second one-way valve 502 is connected with a gas sample detector 503, the second electromagnetic valve 501 is connected with a second control unit 504, one end of the second control unit 504 is grounded, the other end of the second control unit 504 is connected with a second light emitting diode 505, the second light emitting diode 505 is connected with a second circuit breaker 506, the second circuit breaker 506 is connected with a third resistor 507, and the third resistor 507 is connected with a power supply; the second circuit breaker 506 includes the normally open auxiliary switch 1011 of the second circuit breaker and the normally closed auxiliary switch 1008 of the second circuit breaker.

[0023] As shown in Figure 7 The first oil taking unit 7 includes a third electromagnetic valve 701, the third electromagnetic valve 701 is connected with the transformer body 1 through an oil pipe, the third electromagnetic valve 701 is connected with a third one-way valve 702 through an oil pipe, the third one-way valve 702 is connected with a second oil sample detector 703, the third electromagnetic valve 701 is connected with a third control unit 704, the third control unit 704 is connected with a first light emitting diode 705, the first light emitting diode 705 is connected with a first circuit breaker 706, the first circuit breaker 706 includes the normally closed auxiliary switch 904 of the first circuit breaker and the normally open auxiliary switch 1007 of the first circuit breaker, the first circuit breaker 706 is connected with a second resistor 707, and the second resistor 707 is connected with a power supply.​

[0024] As shown in Figure 8 The second oil taking unit 11 includes a first electromagnetic valve 1101 connected with the gas collecting box 4 through an oil pipe, the first electromagnetic valve 1101 is connected with a first one-way valve 1102 through an oil pipe, the first one-way valve 1102 is connected with the first oil sample detector 8, the first electromagnetic valve 1101 is connected with a first electromagnetic valve control unit 1103, the first electromagnetic valve control unit 1103 is connected with a first light emitting diode 705, the first light emitting diode 705 is connected with a first circuit breaker 706, the first circuit breaker 706 is connected with a second resistor 707, and the second resistor 707 is connected with a power supply.

[0025] The transformer automatic sampling method according to the transformer automatic sampling device includes the following operation steps: Step 1, open the transformer body 1 and the gas relay 2; Step 2, observe the color of the first light emitting diode 705 and the second light emitting diode 505, and judge the working state of the transformer body 1 according to the color change; Step 3, when the transformer body 1 is in an abnormal running state, the oil and gas in the transformer body 1 are sampled through the first oil taking unit 7, the second oil taking unit 11 and the gas taking unit 5 to obtain a sampling sample.

[0026] The working state in step 2 includes the normal running state, the automatic oil taking state and the automatic gas taking state of the transformer body 1; the normal running state is that the first light emitting diode 705 and the second light emitting diode 505 are extinguished; the automatic oil taking state is that the first light emitting diode 705 is turned on and emits light and the second light emitting diode 505 is extinguished; and the automatic gas taking state is that the first light emitting diode 705 is extinguished and the second light emitting diode 505 is turned on and emits light.

[0027] The automatic oil taking state specifically includes: First, gas appears in the transformer body 1, the gas is gathered in the gas relay 2 through an oil pipe, the oil level in the gas relay 2 decreases, the first floating ball 906 in the transformer body 1 synchronously decreases with the oil level in the gas relay 2, the first metal arm 907 rises until the first contact 903 is contacted, and the first control circuit 9 is turned on; Secondly, the closing coil 905 of the first circuit breaker is passed through by the current, the first circuit breaker 706 is converted from the opening state to the closing state, at this time, the normally closed auxiliary switch 904 of the first circuit breaker is in the opening state, and the first control circuit 9 is disconnected; Then, since the first circuit breaker 706 is in the closed state, the circuit composed of the power supply 901, the second resistor 707, the first circuit breaker 706, the first light-emitting diode 705 and the third control unit 704 is turned on, at this time, the circuit composed of the power supply 901, the second resistor 707, the first circuit breaker 706, the first light-emitting diode 705 and the first control circuit 9 is turned on; the first light-emitting diode 705 is turned on and emits light; the third electromagnetic valve 701 and the third one-way valve 702 control the oil flow in the transformer body 1 to the second oil sample detector 703; the first electromagnetic valve 1101 and the first one-way valve 1102 control the oil flow in the gas collecting box 4 to the first oil sample detector 8. Finally, the second circuit breaker 506 is in the open state, the circuit composed of the power supply 901, the third resistor 507, the second circuit breaker 506, the second light-emitting diode 505 and the second control unit 504 is turned off, and the second light-emitting diode 505 is turned off; The automatic gas taking state is as follows: When the oil level in the gas collecting box 4 decreases, the gas in the gas relay 2 enters the gas collecting box 4 along the oil pipe, and under the action of the lever composed of the second floating ball 1001 and the second metal arm 1003, the second metal arm 1003 is in contact with the second contact 1005 and is turned on; the second circuit breaker 506 is in the open state, and the normally closed auxiliary switch 1008 of the second circuit breaker is in the closed state; the closing coil 1010 of the second circuit breaker has current passing through it, and under the action of the closing coil 1010 of the second circuit breaker, the second circuit breaker 506 is converted from the open state to the closed state; the normally closed auxiliary switch 1008 of the second circuit breaker is in the open state; since the first circuit breaker 706 is in the closed state, the normally open auxiliary switch 1007 of the first circuit breaker is in the closed state; the opening coil 1009 of the first circuit breaker has current passing through it, and under the action of the opening coil 1009 of the first circuit breaker, the first circuit breaker 706 is converted from the closed state to the open state; the normally open auxiliary switch 1007 of the first circuit breaker is in the open state; the first light-emitting diode 705 is turned off; at this time, the third electromagnetic valve 701 is in the closed state, the oil in the transformer body 1 stops flowing to the second oil sample detector 703, and the oil in the gas collecting box 4 stops flowing to the first oil sample detector 8; the second light-emitting diode 505 is turned on, and the gas in the gas collecting box 4 flows to the gas sample detector 503.

[0028] The sample in step 3 is input into the first oil sample detector 8, the second oil sample detector 703 and the gas detector 6 for detection, and the detection results are obtained; according to the DL / T722-2014 Guide for Analysis and Judgment of Dissolved Gases in Transformer Oil and the detection results, the type of defect when the transformer body 1 is in an abnormal operating state is determined.

[0029] The second metal arm 1003 is divided into two sections by the insulating piece 1004, the two sections of the second metal arm 1003 are insulated, when displacement occurs, the second contact 1005 and the third contact 1006 cooperate, the second floating ball 1001 controls two circuits; the circuit provided in the application can control the oil taking circuit of the transformer body 1 and the oil taking circuit of the gas collecting box 4 to be interrupted, the bottom of the gas collecting box 4 still has insulating oil, and outside air is prevented from entering the gas collecting box; when the gas in the gas collecting box 4 is completely released, the gas collecting box 4 returns to the full oil level, the second floating ball 1001 in the gas collecting box 4 and the connected second metal arm 1003 control the interruption of the gas taking unit 5, and the gas relay 2 and the gas collecting box 4 return to the original operating state.

[0030] The oil sample in the gas collecting box 4 is taken as a reference oil sample, and the test results of the oil sample in the transformer body 1 are compared, so that the defect type is accurately judged.

[0031] The normally closed auxiliary switch and the normally open auxiliary switch of the circuit breaker are provided, the control circuit is cut off after the coil is operated, and the closing and opening coils of the circuit breaker are prevented from being damaged due to long-time current flowing.

[0032] Embodiment 1 The transformer automatic sampling device provided by the application comprises a transformer body 1, a gas relay 2 in communication with the transformer body 1 through an oil pipe, a storage tank 3 in communication with the gas relay 2, a gas collecting box 4 in communication with the top of the gas relay 2 through a pipe, a gas taking unit 5 connected to the top of the gas collecting box 4, a gas detector 6 connected to the gas taking unit 5, a first oil taking unit 7 connected to the bottom of the transformer body 1, a first oil sample detector 8 connected to the first oil taking unit 7, a second oil taking unit 11 connected to the bottom of the gas collecting box 4, and a second oil sample detector 703 connected to the second oil taking unit 11.

[0033] Embodiment 2 The transformer automatic sampling device provided by the application comprises a transformer body 1, a gas relay 2 in communication with the transformer body 1 through an oil pipe, a storage tank 3 in communication with the gas relay 2, a gas collecting box 4 in communication with the top of the gas relay 2 through a pipe, a gas taking unit 5 connected to the top of the gas collecting box 4, a gas detector 6 connected to the gas taking unit 5, a first oil taking unit 7 connected to the bottom of the transformer body 1, a first oil sample detector 8 connected to the first oil taking unit 7, a second oil taking unit 11 connected to the bottom of the gas collecting box 4, and a second oil sample detector 703 connected to the second oil taking unit 11.

[0034] The first control circuit 9 comprises a power supply 901, the power supply 901 is sequentially connected with a first resistor 902, two first contacts 903, a normally closed auxiliary switch 904 of a first circuit breaker and a closing coil 905 of the first circuit breaker through wires, the closing coil 905 of the first circuit breaker is grounded; a first floating ball 906 is arranged in the gas relay 2, the first floating ball 906 is connected with a U-shaped first metal arm 907 through a first insulating rod 908, a fixed block 909 is connected to the side wall of the first insulating rod 908, the fixed block 909 is connected with the inner wall of the gas relay 2, and the two first contacts 903 are in contact with the first metal arm 907.

[0035] Embodiment 3 The transformer automatic sampling device comprises a transformer body 1, a gas relay 2 communicated with the transformer body 1 through an oil pipe, an oil storage tank 3 communicated with the gas relay 2, a gas collecting box 4 communicated with the top of the gas relay 2 through a pipe, a gas taking unit 5 connected to the top of the gas collecting box 4, a gas detector 6 connected to the gas taking unit 5, a first oil taking unit 7 connected to the bottom of the transformer body 1, a first oil sample detector 8 connected to the first oil taking unit 7, a second oil taking unit 11 connected to the bottom of the gas collecting box 4, a second oil sample detector 703 connected to the second oil taking unit 11, a first control circuit 9 arranged in the gas relay 2 and a second control circuit 10 arranged in the gas collecting box 4.

[0036] The first control circuit 9 comprises a power supply 901, the power supply 901 is sequentially connected with a first resistor 902, two first contacts 903, a normally closed auxiliary switch 904 of a first circuit breaker and a closing coil 905 of the first circuit breaker through wires, the closing coil 905 of the first circuit breaker is grounded; a first floating ball 906 is arranged in the gas relay 2, the first floating ball 906 is connected with a U-shaped first metal arm 907 through a first insulating rod 908, a fixed block 909 is connected to the side wall of the first insulating rod 908, the fixed block 909 is connected with the inner wall of the gas relay 2, and the two first contacts 903 are in contact with the first metal arm 907.

[0037] The second floating ball 1001 is arranged in the gas collecting box 4, the second floating ball 1001 is connected with the second metal arm 1003 in the shape of U through the second insulating rod 1002, the two opposite insulating pieces 1004 are arranged on the side wall of the second metal arm 1003, the connecting rod 1013 is connected with the second insulating rod 1002, and the connecting rod 1013 is connected with the inner wall of the gas collecting box 4; the second control circuit 10 comprises two second contacts 1005 and two third contacts 1006, the third contacts 1006 and the second contacts 1005 are connected with the first resistor 902, the two second contacts 1005 are matched with the side wall of the second metal arm 1003 close to the second floating ball 1001, the two third contacts 1006 are matched with the side wall of the second metal arm 1003 away from the second floating ball 1001, and the insulating pieces 1004 are arranged on the second metal arm 1003 between the second contacts 1005 and the third contacts 1006; the second contacts 1005 are arranged to be higher than the third contacts 1006, the second contacts 1005 are connected with the normally open auxiliary switch 1007 of the first circuit breaker and the normally closed auxiliary switch 1008 of the second circuit breaker through wires, the normally open auxiliary switch 1007 of the first circuit breaker is connected with the tripping coil 1009 of the first circuit breaker, the tripping coil 1009 of the first circuit breaker is grounded, the normally closed auxiliary switch 1008 of the second circuit breaker is connected with the closing coil 1010 of the second circuit breaker, and the closing coil 1010 of the second circuit breaker is grounded; the third contacts 1006 are sequentially connected with the normally open auxiliary switch 1011 of the second circuit breaker and the tripping coil 1012 of the second circuit breaker, and the tripping coil 1012 of the second circuit breaker is grounded.

[0038] Embodiment 4 The transformer automatic sampling device comprises a transformer body 1, a gas relay 2 communicated with the transformer body 1 through an oil pipe, an oil storage tank 3 communicated with the gas relay 2, a gas collecting box 4 communicated with the top of the gas relay 2 through a pipe, a gas taking unit 5 connected with the top of the gas collecting box 4, a gas detector 6 connected with the gas taking unit 5, a first oil taking unit 7 connected with the bottom of the transformer body 1, a first oil sample detector 8 connected with the first oil taking unit 7, a second oil taking unit 11 connected with the bottom of the gas collecting box 4, and a second oil sample detector 703 connected with the second oil taking unit 11. The gas relay 2 is provided with a first control circuit 9, and the gas collecting box 4 is provided with a second control circuit 10.

[0039] The first control circuit 9 comprises a power supply 901, the power supply 901 is sequentially connected with a first resistor 902, two first contacts 903, a normally closed auxiliary switch 904 of a first circuit breaker and a closing coil 905 of the first circuit breaker through wires, the closing coil 905 of the first circuit breaker is grounded; a first floating ball 906 is arranged in the gas relay 2, the first floating ball 906 is connected with a U-shaped first metal arm 907 through a first insulating rod 908, a fixed block 909 is connected on the side wall of the first insulating rod 908, the fixed block 909 is connected with the inner wall of the gas relay 2, and the two first contacts 903 are in contact with the first metal arm 907.

[0040] A second floating ball 1001 is arranged in the gas collecting box 4, the second floating ball 1001 is connected with a U-shaped second metal arm 1003 through a second insulating rod 1002, two opposite insulating pieces 1004 are connected on the upper side wall of the second metal arm 1003, a connecting rod 1013 is connected on the second insulating rod 1002, and the connecting rod 1013 is connected with the inner wall of the gas collecting box 4; the second control circuit 10 comprises two opposite second contacts 1005 and two opposite third contacts 1006, the third contacts 1006 and the second contacts 1005 are connected with the first resistor 902, the two second contacts 1005 are matched with the side wall of the second metal arm 1003 close to the second floating ball 1001, the two third contacts 1006 are matched with the side wall of the second metal arm 1003 away from the second floating ball 1001, and the insulating pieces 1004 are arranged on the second metal arm 1003 between the second contacts 1005 and the third contacts 1006; the second contacts 1005 are arranged at a position higher than the third contacts 1006, the second contacts 1005 are respectively connected with a normally open auxiliary switch 1007 of the first circuit breaker and a normally closed auxiliary switch 1008 of a second circuit breaker through wires, the normally open auxiliary switch 1007 of the first circuit breaker is connected with a tripping coil 1009 of the first circuit breaker, the tripping coil 1009 of the first circuit breaker is grounded, the normally closed auxiliary switch 1008 of the second circuit breaker is connected with a closing coil 1010 of the second circuit breaker, and the closing coil 1010 of the second circuit breaker is grounded; the third contacts 1006 are sequentially connected with a normally open auxiliary switch 1011 of the second circuit breaker and a tripping coil 1012 of the second circuit breaker, and the tripping coil 1012 of the second circuit breaker is grounded.

[0041] The gas taking unit 5 comprises a second electromagnetic valve 501, the second electromagnetic valve 501 is communicated with the gas collecting box 4 through a gas pipe, the second electromagnetic valve 501 is connected with a second check valve 502 through a gas pipe, the second check valve 502 is connected with a gas sample detector 503, the second electromagnetic valve 501 is connected with a second control unit 504, one end of the second control unit 504 is grounded, the other end of the second control unit 504 is connected with a second light emitting diode 505, the second light emitting diode 505 is connected with a second breaker 506, the second breaker 506 is connected with a third resistor 507, and the third resistor 507 is connected with a power supply; the second breaker 506 comprises a second breaker normally open auxiliary switch 1011 and a second breaker normally closed auxiliary switch 1008.

[0042] The first oil taking unit 7 comprises a third electromagnetic valve 701, the third electromagnetic valve 701 is connected with the transformer body 1 through an oil pipe, the third electromagnetic valve 701 is connected with a third check valve 702 through an oil pipe, the third check valve 702 is connected with a second oil sample detector 703, the third electromagnetic valve 701 is connected with a third control unit 704, the third control unit 704 is connected with a first light emitting diode 705, the first light emitting diode 705 is connected with a first breaker 706, the first breaker 706 comprises a first breaker normally closed auxiliary switch 904 and a first breaker normally open auxiliary switch 1007, the first breaker 706 is connected with a second resistor 707, and the second resistor 707 is connected with a power supply.

[0043] Embodiment 5 The transformer automatic sampling device comprises a transformer body 1, the transformer body 1 is communicated with a gas relay 2 through an oil pipe, the gas relay 2 is communicated with an oil storage tank 3, the top of the gas relay 2 is communicated with a gas collecting box 4 through a pipe, the gas collecting box 4 is connected with a gas taking unit 5 at the top, the gas taking unit 5 is connected with a gas detector 6, the bottom of the transformer body 1 is connected with a first oil taking unit 7, the first oil taking unit 7 is connected with a first oil sample detector 8, the bottom of the gas collecting box 4 is connected with a second oil taking unit 11, the second oil taking unit 11 is connected with a second oil sample detector 703, a first control circuit 9 is arranged in the gas relay 2, and a second control circuit 10 is arranged in the gas collecting box 4.

[0044] The first control circuit 9 comprises a power supply 901, the power supply 901 is connected with a first resistor 902, two first contacts 903, a first breaker normally closed auxiliary switch 904 and a first breaker closing coil 905 in sequence through wires, and the first breaker closing coil 905 is grounded; a first floating ball 906 is arranged in the gas relay 2, the first floating ball 906 is connected with a first metal arm 907 in a U shape through a first insulating rod 908, a fixed block 909 is connected with the side wall of the first insulating rod 908, the fixed block 909 is connected with the inner wall of the gas relay 2, and the two first contacts 903 are in contact with the first metal arm 907.

[0045] The second floating ball 1001 is arranged in the gas collecting box 4, the second floating ball 1001 is connected with a second metal arm 1003 in the shape of U through a second insulating rod 1002, two insulating parts 1004 opposite in position are arranged on the upper side wall of the second metal arm 1003, a connecting rod 1013 is connected on the second insulating rod 1002, and the connecting rod 1013 is connected with the inner wall of the gas collecting box 4; the second control circuit 10 comprises two second contacts 1005 opposite in position and two third contacts 1006 opposite in position, the third contacts 1006 and the second contacts 1005 are connected with the first resistor 902, the two second contacts 1005 are matched with the side wall of the second metal arm 1003 close to the second floating ball 1001, the two third contacts 1006 are matched with the side wall of the second metal arm 1003 away from the second floating ball 1001, and the insulating parts 1004 are arranged on the second metal arm 1003 between the second contacts 1005 and the third contacts 1006; the second contacts 1005 are arranged at a position higher than the position of the third contacts 1006, the second contacts 1005 are respectively connected with a normally open auxiliary switch 1007 of a first circuit breaker and a normally closed auxiliary switch 1008 of a second circuit breaker through wires, the normally open auxiliary switch 1007 of the first circuit breaker is connected with a tripping coil 1009 of the first circuit breaker, the tripping coil 1009 of the first circuit breaker is grounded, the normally closed auxiliary switch 1008 of the second circuit breaker is connected with a closing coil 1010 of the second circuit breaker, and the closing coil 1010 of the second circuit breaker is grounded; the third contacts 1006 are sequentially connected with a normally open auxiliary switch 1011 of the second circuit breaker and a tripping coil 1012 of the second circuit breaker, and the tripping coil 1012 of the second circuit breaker is grounded.

[0046] The gas taking unit 5 comprises a second electromagnetic valve 501, the second electromagnetic valve 501 is communicated with the gas collecting box 4 through a gas pipe, the second electromagnetic valve 501 is connected with a second one-way valve 502 through a gas pipe, the second one-way valve 502 is connected with a gas sample detector 503, the second electromagnetic valve 501 is connected with a second control unit 504, one end of the second control unit 504 is grounded, the second control unit 504 is connected with a second light emitting diode 505 at the other end, the second light emitting diode 505 is connected with a second circuit breaker 506, the second circuit breaker 506 is connected with a third resistor 507, and the third resistor 507 is connected with a power supply; the second circuit breaker 506 comprises the normally open auxiliary switch 1011 of the second circuit breaker and the normally closed auxiliary switch 1008 of the second circuit breaker.

[0047] The first oil taking unit 7 comprises a third electromagnetic valve 701 connected with the transformer body 1 through an oil pipe, the third electromagnetic valve 701 is connected with a third one-way valve 702 through an oil pipe, the third one-way valve 702 is connected with a second oil sample detector 703, the third electromagnetic valve 701 is connected with a third control unit 704, the third control unit 704 is connected with a first light emitting diode 705, the first light emitting diode 705 is connected with a first breaker 706, the first breaker 706 comprises a first breaker normally closed auxiliary switch 904 and a first breaker normally open auxiliary switch 1007, the first breaker 706 is connected with a second resistor 707, and the second resistor 707 is connected with a power supply.

[0048] The second oil taking unit 11 comprises a first electromagnetic valve 1101 connected with the gas collecting box 4 through an oil pipe, the first electromagnetic valve 1101 is connected with a first one-way valve 1102 through an oil pipe, the first one-way valve 1102 is connected with the first oil sample detector 8, the first electromagnetic valve 1101 is connected with a first electromagnetic valve control unit 1103, the first electromagnetic valve control unit 1103 is connected with the first light emitting diode 705, the first light emitting diode 705 is connected with the first breaker 706, the first breaker 706 is connected with the second resistor 707, and the second resistor 707 is connected with the power supply.

[0049] The transformer automatic sampling method comprises the following operation steps according to the transformer automatic sampling device. Step 1, opening the transformer body 1 and the gas relay 2; Step 2, observing the color of the first light emitting diode 705 and the second light emitting diode 505, and judging the working state of the transformer body 1 according to the color change; Step 3, when the transformer body 1 is in an abnormal running state, sampling the oil and gas in the transformer body 1 through the first oil taking unit 7, the second oil taking unit 11 and the gas taking unit 5 to obtain a sampling sample.

[0050] Embodiment 6 The transformer automatic sampling device comprises a transformer body 1, the transformer body 1 is connected with a gas relay 2 through an oil pipe, the gas relay 2 is connected with an oil storage tank 3, the top of the gas relay 2 is connected with a gas collecting box 4 through a pipe, the top of the gas collecting box 4 is connected with a gas taking unit 5, the gas taking unit 5 is connected with a gas detector 6, the bottom of the transformer body 1 is connected with a first oil taking unit 7, the first oil taking unit 7 is connected with a first oil sample detector 8, the bottom of the gas collecting box 4 is connected with a second oil taking unit 11, the second oil taking unit 11 is connected with a second oil sample detector 703, the gas relay 2 is provided with a first control circuit 9, and the gas collecting box 4 is provided with a second control circuit 10.

[0051] The first control circuit 9 comprises a power supply 901, the power supply 901 is sequentially connected with a first resistor 902, two first contacts 903, a normally closed auxiliary switch 904 of a first circuit breaker and a closing coil 905 of the first circuit breaker through wires, the closing coil 905 of the first circuit breaker is grounded; a first floating ball 906 is arranged in the gas relay 2, the first floating ball 906 is connected with a first metal arm 907 in a U shape through a first insulating rod 908, a fixed block 909 is connected with the side wall of the first insulating rod 908, the fixed block 909 is connected with the inner wall of the gas relay 2, and the two first contacts 903 are in contact with the first metal arm 907.

[0052] A second floating ball 1001 is arranged in the gas collecting box 4, the second floating ball 1001 is connected with a second metal arm 1003 in a U shape through a second insulating rod 1002, two insulating pieces 1004 located opposite to each other are connected with the upper side wall of the second metal arm 1003, a connecting rod 1013 is connected with the second insulating rod 1002, and the connecting rod 1013 is connected with the inner wall of the gas collecting box 4; the second control circuit 10 comprises two second contacts 1005 located opposite to each other and two third contacts 1006 located opposite to each other, the third contacts 1006 and the second contacts 1005 are connected with the first resistor 902, the two second contacts 1005 are matched with the side wall of the second metal arm 1003 close to the second floating ball 1001, the two third contacts 1006 are matched with the side wall of the second metal arm 1003 away from the second floating ball 1001, and the insulating pieces 1004 are located on the second metal arm 1003 between the second contacts 1005 and the third contacts 1006; the second contacts 1005 are arranged to be higher than the third contacts 1006, the second contacts 1005 are respectively connected with a normally open auxiliary switch 1007 of the first circuit breaker and a normally closed auxiliary switch 1008 of a second circuit breaker through wires, the normally open auxiliary switch 1007 of the first circuit breaker is connected with a tripping coil 1009 of the first circuit breaker, the tripping coil 1009 of the first circuit breaker is grounded, the normally closed auxiliary switch 1008 of the second circuit breaker is connected with a closing coil 1010 of the second circuit breaker, and the closing coil 1010 of the second circuit breaker is grounded; the third contacts 1006 are sequentially connected with a normally open auxiliary switch 1011 of the second circuit breaker and a tripping coil 1012 of the second circuit breaker, and the tripping coil 1012 of the second circuit breaker is grounded.

[0053] The gas taking unit 5 comprises a second electromagnetic valve 501, the second electromagnetic valve 501 is communicated with the gas collecting box 4 through a gas pipe, the second electromagnetic valve 501 is connected with a second check valve 502 through a gas pipe, the second check valve 502 is connected with a gas sample detector 503, the second electromagnetic valve 501 is connected with a second control unit 504, one end of the second control unit 504 is grounded, the other end of the second control unit 504 is connected with a second light emitting diode 505, the second light emitting diode 505 is connected with a second breaker 506, the second breaker 506 is connected with a third resistor 507, and the third resistor 507 is connected with a power supply; the second breaker 506 comprises a second breaker normally open auxiliary switch 1011 and a second breaker normally closed auxiliary switch 1008.

[0054] The first oil taking unit 7 comprises a third electromagnetic valve 701, the third electromagnetic valve 701 is connected with the transformer body 1 through an oil pipe, the third electromagnetic valve 701 is connected with a third check valve 702 through an oil pipe, the third check valve 702 is connected with a second oil sample detector 703, the third electromagnetic valve 701 is connected with a third control unit 704, the third control unit 704 is connected with a first light emitting diode 705, the first light emitting diode 705 is connected with a first breaker 706, the first breaker 706 comprises a first breaker normally closed auxiliary switch 904 and a first breaker normally open auxiliary switch 1007, the first breaker 706 is connected with a second resistor 707, and the second resistor 707 is connected with a power supply.

[0055] The second oil taking unit 11 comprises a first electromagnetic valve 1101, the first electromagnetic valve 1101 is connected with the gas collecting box 4 through an oil pipe, the first electromagnetic valve 1101 is connected with a first check valve 1102 through an oil pipe, the first check valve 1102 is connected with a first oil sample detector 8, the first electromagnetic valve 1101 is connected with a first electromagnetic valve control unit 1103, the first electromagnetic valve control unit 1103 is connected with a first light emitting diode 705, the first light emitting diode 705 is connected with a first breaker 706, the first breaker 706 is connected with a second resistor 707, and the second resistor 707 is connected with a power supply.

[0056] The transformer automatic sampling method comprises the following operation steps according to the transformer automatic sampling device. Step 1, open the transformer body 1 and the gas relay 2; Step 2, observe the colors of the first light emitting diode 705 and the second light emitting diode 505, and judge the working state of the transformer body 1 according to the color change; Step 3, when the transformer body 1 is in an abnormal running state, the oil and gas in the transformer body 1 are sampled through the first oil taking unit 7, the second oil taking unit 11 and the gas taking unit 5 to obtain a sampling sample.

[0057] The working states in step 2 include a normal operation state of the transformer body 1, an automatic oil taking state and an automatic gas taking state; the normal operation state is that the first light emitting diode 705 and the second light emitting diode 505 are turned off; the automatic oil taking state is that the first light emitting diode 705 is turned on to emit light and the second light emitting diode 505 is turned off; and the automatic gas taking state is that the first light emitting diode 705 is turned off and the second light emitting diode 505 is turned on to emit light.

[0058] The sampling sample in step 3 is input into the first oil sample detector 8, the second oil sample detector 703 and the gas detector 6 for detection, so as to obtain detection results, and the defect type when the transformer body 1 is in an abnormal operation state is judged according to the detection results.

Claims

1. Transformer automatic sampling device, characterized in that, The utility model relates to a transformer oil gas detection device, including transformer body (1), transformer body (1) are communicated with gas relay (2) through oil pipe, gas relay (2) are communicated with oil storage tank (3), gas relay (2) top are communicated with gas collection box (4) through pipe, gas collection box (4) top are connected with gas taking unit (5), gas taking unit (5) are connected with gas detector (6), transformer body (1) bottom are connected with first oil taking unit (7), first oil taking unit (7) are connected with first oil sample detector (8), gas collection box (4) bottom are connected with second oil taking unit (11), second oil taking unit (11) are connected with second oil sample detector (703), gas relay (2) are equipped with first control circuit (9) in, gas collection box (4) are equipped with second control circuit (10).

2. The transformer automatic sampling device of claim 1, wherein, The first control circuit (9) includes a power supply (901), the power supply (901) is connected with a first resistor (902), two first contacts (903), a first circuit breaker auxiliary switch (904) and a first circuit breaker closing coil (905) in sequence through wires, the first circuit breaker closing coil (905) is grounded; The first gas relay (2) is provided with a first floating ball (906), the first floating ball (906) is connected with a first metal arm (907) in the shape of U through a first insulating rod (908), the first insulating rod (908) side wall is connected with a fixed block (909), the fixed block (909) is connected with the inner wall of the gas relay (2), and the two first contacts (903) are in contact with the first metal arm (907).

3. The transformer automatic sampling apparatus of claim 2, wherein, The gas collecting box (4) is internally provided with a second floating ball (1001), the second floating ball (1001) is connected with a second metal arm (1003) in the shape of U through a second insulating rod (1002), the second metal arm (1003) is connected with two position-opposed insulating pieces (1004) on the upper side wall, the second insulating rod (1002) is connected with a connecting rod (1013), and the connecting rod (1013) is connected with the inner wall of the gas collecting box (4); the second control circuit (10) comprises two position-opposed second contacts (1005) and two position-opposed third contacts (1006), the third contacts (1006) and the second contacts (1005) are connected with a first resistor (902), the two second contacts (1005) are matched with the side wall of the second metal arm (1003) close to the second floating ball (1001), the two third contacts (1006) are matched with the side wall of the second metal arm (1003) away from the second floating ball (1001), and the insulating pieces (1004) are located on the second metal arm (1003) of the second contacts (1005) and the third contacts (1006); the second contacts (1005) are arranged at a position higher than that of the third contacts (1006), the second contacts (1005) are respectively connected with a first circuit breaker's normally open auxiliary switch (1007) and a second circuit breaker's normally closed auxiliary switch (1008) through wires, the first circuit breaker's normally open auxiliary switch (1007) is connected with a first circuit breaker's tripping coil (1009), the first circuit breaker's tripping coil (1009) is grounded, the second circuit breaker's normally closed auxiliary switch (1008) is connected with a second circuit breaker's closing coil (1010), and the second circuit breaker's closing coil (1010) is grounded; the third contacts (1006) are sequentially connected with a second circuit breaker's normally open auxiliary switch (1011) and a second circuit breaker's tripping coil (1012), and the second circuit breaker's tripping coil (1012) is grounded.

4. The transformer automatic sampling apparatus of claim 3, wherein, The gas collecting box (4) is internally provided with a second floating ball (1001), the second floating ball (1001) is connected with a second metal arm (1003) in the shape of U through a second insulating rod (1002), the second metal arm (1003) is connected with two position-opposed insulating pieces (1004) on the upper side wall, the second insulating rod (1002) is connected with a connecting rod (1013), and the connecting rod (1013) is connected with the inner wall of the gas collecting box (4); the second control circuit (10) comprises two position-opposed second contacts (1005) and two position-opposed third contacts (1006), the third contacts (1006) and the second contacts (1005) are connected with a first resistor (902), the two second contacts (1005) are matched with the side wall of the second metal arm (1003) close to the second floating ball (1001), the two third contacts (1006) are matched with the side wall of the second metal arm (1003) away from the second floating ball (1001), and the insulating pieces (1004) are located on the second metal arm (1003) of the second contacts (1005) and the third contacts (1006); the second contacts (1005) are arranged at a position higher than that of the third contacts (1006), the second contacts (1005) are respectively connected with a first circuit breaker's normally open auxiliary switch (1007) and a second circuit breaker's normally closed auxiliary switch (1008) through wires, the first circuit breaker's normally open auxiliary switch (1007) is connected with a first circuit breaker's tripping coil (1009), the first circuit breaker's tripping coil (1009) is grounded, the second circuit breaker's normally closed auxiliary switch (1008) is connected with a second circuit breaker's closing coil (1010), and the second circuit breaker's closing coil (1010) is grounded; the third contacts (1006) are sequentially connected with a second circuit breaker's normally open auxiliary switch (1011) and a second circuit breaker's tripping coil (1012), and the second circuit breaker's tripping coil (1012) is grounded.

5. The transformer automatic sampling apparatus of claim 4, wherein, The first oil taking unit (7) comprises a third electromagnetic valve (701) connected with the transformer body (1) through an oil pipe, the third electromagnetic valve (701) is connected with a third one-way valve (702) through an oil pipe, the third one-way valve (702) is connected with a second oil sample detector (703), the third electromagnetic valve (701) is connected with a third control unit (704), the third control unit (704) is connected with a first light emitting diode (705), the first light emitting diode (705) is connected with a first circuit breaker (706), the first circuit breaker (706) comprises a first circuit breaker normally closed auxiliary switch (904) and a first circuit breaker normally open auxiliary switch (1007), the first circuit breaker (706) is connected with a second resistor (707), and the second resistor (707) is connected with a power supply.

6. The transformer automatic sampling apparatus of claim 5, wherein, The second oil taking unit (11) comprises a first electromagnetic valve (1101) connected with the gas collecting box (4) through an oil pipe, the first electromagnetic valve (1101) is connected with a first one-way valve (1102) through an oil pipe, the first one-way valve (1102) is connected with a first oil sample detector (8), the first electromagnetic valve (1101) is connected with a first electromagnetic valve control unit (1103), the first electromagnetic valve control unit (1103) is connected with a first light emitting diode (705), the first light emitting diode (705) is connected with a first circuit breaker (706), the first circuit breaker (706) is connected with a second resistor (707), and the second resistor (707) is connected with a power supply.

7. A method of automatic sampling of a transformer according to the transformer automatic sampling device of claim 6, characterized by The method comprises the following operation steps: Step 1, turning on the transformer body (1) and the gas relay (2); Step 2, observing the colors of the first light emitting diode (705) and the second light emitting diode (505), and judging the working state of the transformer body (1) according to the color change; Step 3, when the transformer body (1) is in an abnormal running state, sampling the oil and gas in the transformer body (1) through the first oil taking unit (7), the second oil taking unit (11) and the gas taking unit (5) to obtain a sampling sample.

8. The transformer automatic sampling method of claim 7, wherein, The working state in step 2 comprises a normal running state, an automatic oil taking state and an automatic gas taking state of the transformer body (1); the normal running state is that the first light emitting diode (705) and the second light emitting diode (505) are extinguished; the automatic oil taking state is that the first light emitting diode (705) is turned on and emits light and the second light emitting diode (505) is extinguished; and the automatic gas taking state is that the first light emitting diode (705) is extinguished and the second light emitting diode (505) is turned on and emits light.

9. The transformer automatic sampling method of claim 8, wherein, The automatic oil taking state specifically comprises: First, gas appears in the transformer body (1), the gas is gathered in the gas relay (2) through an oil pipe, the oil level in the gas relay (2) is lowered, the first floating ball (906) is lowered synchronously with the oil level of the gas relay (2), the first metal arm (907) is raised until the first metal arm (907) contacts the first contact (903), and the first control circuit (9) is turned on; Secondly, the closing coil (905) of the first circuit breaker has current passing through, and the first circuit breaker (706) is converted from the open state to the closed state, at this time, the normally closed auxiliary switch (904) of the first circuit breaker is in the open state, and the first control circuit (9) is disconnected; Then, since the first circuit breaker (706) is in the closed state, the circuit composed of the power supply (901), the second resistor (707), the first circuit breaker (706), the first light emitting diode (705) and the third control unit (704) is turned on, at this time, the circuit composed of the power supply (901), the second resistor (707), the first circuit breaker (706), the first light emitting diode (705) and the first control circuit (9) is turned on; the first light emitting diode (705) is turned on and emits light; the third electromagnetic valve (701) and the third one-way valve (702) control the oil flow of the transformer body (1) to the second oil sample detector (703); the first electromagnetic valve (1101) and the first one-way valve (1102) control the oil flow of the gas collecting box (4) to the first oil sample detector (8); Finally, the second circuit breaker (506) is in the open state, the circuit composed of the power supply (901), the third resistor (507), the second circuit breaker (506), the second light emitting diode (505) and the second control unit (504) is in the disconnected state, and the second light emitting diode (505) is turned off; The automatic gas taking state is specifically as follows: When the oil level in the gas collecting box (4) decreases, the gas in the gas relay (2) enters the gas collecting box (4) along the oil pipe, under the action of the lever composed of the second floating ball (1001) and the second metal arm (1003), the second metal arm (1003) contacts the second contact (1005) to be turned on; the second circuit breaker (506) is in the open state, and the normally closed auxiliary switch (1008) of the second circuit breaker is in the closed state; the closing coil (1010) of the second circuit breaker has current passing through, and the second circuit breaker (506) is converted from the open state to the closed state under the action of the closing coil (1010) of the second circuit breaker; the normally closed auxiliary switch (1008) of the second circuit breaker is in the open state; since the first circuit breaker (706) is in the closed state, the normally open auxiliary switch (1007) of the first circuit breaker is in the closed state; the opening coil (1009) of the first circuit breaker has current passing through, and the first circuit breaker (706) is converted from the closed state to the open state under the action of the opening coil (1009) of the first circuit breaker; the normally open auxiliary switch (1007) of the first circuit breaker is in the open state; the first light emitting diode (705) is turned off; at this time, the third electromagnetic valve (701) is in the closed state, the oil in the transformer body (1) stops flowing to the second oil sample detector (703), and the oil in the gas collecting box (4) stops flowing to the first oil sample detector (8); the second light emitting diode (505) is turned on, and the gas in the gas collecting box (4) flows to the gas sample detector (503).

10. The transformer automatic sampling method of claim 9, wherein, The sampling sample described in step 3 is input into the first oil sample detector (8), the second oil sample detector (703) and the gas detector (6) for detection, and detection results are obtained; and the type of defect when the transformer body (1) is in an abnormal operating state is determined according to the detection results.

Images