CN115235691A - Oil leakage protection device of gas relay - Google Patents

Abstract

The invention discloses an oil leakage protection device of a gas relay, which comprises a shell and an alarm, wherein the shell comprises two shell components, the two shell components are in buckled connection, a containing cavity is formed between the two shell components and used for containing the gas relay, a liquid level detector is arranged in the containing cavity and electrically connected with the alarm, an observation window is arranged on the shell components, and the observation window is opposite to an observation port of the gas relay. Through making buchholz relay hold the intracavity that holds at the shell, buchholz relay's oil leak can be collected by the shell, and then avoids the oil leak to trickle at will to power equipment on every side and cause equipment pollution. Simultaneously, utilize the liquid level detector to detect the oil that the seepage holds the intracavity, can send the warning through the alarm when the liquid level that holds the oil leak of intracavity reaches the setting value to the operation personnel in time handle, and then guarantee the safe operation of transformer.

Description

Oil leakage protection device of gas relay

Technical Field

The invention relates to the technical field of power equipment, in particular to an oil leakage protection device of a gas relay.

Background

The transformer is an important device in the power system, and plays an important role in transmitting power. The gas relay is installed on a pipeline between an oil storage cabinet and an oil tank of the transformer, and the gas relay decomposes oil to generate gas or cause oil flow to surge by utilizing internal faults of the transformer, so that contacts on the gas relay act and are connected with a control loop, and signal feedback of light gas or heavy gas is realized. The transformer can execute corresponding protection programs according to the signal feedback of the gas relay. In the prior art, the buchholz relay is installed on a pipeline in a flange connection mode, and under the action of vibration or other stress during the working of the transformer, the leakage oil of the contact surface of a flange connected with the buchholz relay is easily caused, and the leakage oil of an air release plug of the buchholz relay and the like affect the safe operation of the transformer. Meanwhile, the leaked oil can flow to other surrounding electric power equipment at will, and equipment pollution is caused.

Disclosure of Invention

The embodiment of the invention aims to: the utility model provides a buchholz relay's oil leak protection device, it can monitor buchholz relay's oil leak condition to and collect the oil leak, avoid causing equipment pollution.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a buchholz relay's oil leak protection device, includes shell and alarm, the shell includes two casing subassemblies, and two casing subassemblies are detained and are connected, form between two casing subassemblies and hold the chamber, it is used for holding buchholz relay to hold the chamber, it is provided with the level detector to hold the intracavity, the level detector with the alarm electricity is connected, the last observation window that is provided with of casing subassembly, the observation window with buchholz relay's viewing aperture is just right.

Further, still be provided with exhaust element and secondary wiring group on the casing subassembly, exhaust element with buchholz's bleeder cock intercommunication, secondary wiring group with buchholz's secondary wiring end is connected.

Further, exhaust element connecting pipe and shutoff piece, the one end of connecting pipe be used for with the air release plug intercommunication, the other end of connecting pipe with the outside intercommunication of shell, the shutoff piece can the selectivity shutoff the connecting pipe deviates from the one end of air release plug.

Further, the exhaust element still includes the base, the base set up in on the casing subassembly, the base is provided with the through-hole, set up on the pore wall of through-hole with the exhaust hole of through-hole intercommunication, the connecting pipe is inserted and is located the through-hole, just the connecting pipe is located the exhaust hole is close to one side of casing subassembly, the shutoff piece with the through-hole deviates from casing subassembly's one end threaded connection, through revolving soon the shutoff piece so that the shutoff piece is close to or keeps away from the connecting pipe.

Further, the casing subassembly includes first casing and second casing, the second casing is two, two the second casing set up in the both ends that first casing is relative, two the second casing is detained to form hold the chamber, lie in with one side two of casing the second casing is detained to form interface channel, interface channel with hold the chamber intercommunication, interface channel be used for wear to establish with the pipeline that buchholz relay connects.

Further, a sealing layer is arranged on the inner wall of the connecting channel.

Furthermore, along the axis direction of the connecting channel, a plurality of annular grooves are arranged on the inner wall of the connecting channel at intervals.

Furthermore, the last connection otic placode that is provided with of housing assembly, the connection otic placode is used for wearing to establish the fastener, two housing assembly passes through the fastener is connected.

Furthermore, a sealing ring is clamped between the two connecting lug plates for penetrating the same fastener.

Furthermore, the signal testing device further comprises a signal testing element, wherein the signal testing element is installed on the shell assembly, and a protective cover covers the signal testing element.

The invention has the beneficial effects that: through setting up shell, alarm and liquid level detector, make buchholz relay hold the intracavity that holds at the shell, buchholz relay's oil leak can be collected by the shell, and then avoids the oil leak to flow to on the power equipment on every side at will and cause equipment pollution. Meanwhile, the liquid level detector is used for detecting the oil leaked into the accommodating cavity, and when the liquid level of the leaked oil in the accommodating cavity reaches a set value, an alarm can be sent out through the alarm, so that the operation personnel can timely handle the oil, and the safe operation of the transformer is further ensured.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1 is a schematic view of an oil leakage protection device of a buchholz relay according to an embodiment of the present invention.

Fig. 2 is a schematic view of a housing assembly of an embodiment of the present invention.

Fig. 3 is a sectional view of an oil leakage protection apparatus for a buchholz relay according to an embodiment of the present invention.

FIG. 4 is a partial schematic view of a venting member according to an embodiment of the invention.

Fig. 5 is a sectional view of a second housing of the embodiment of the present invention.

In the figure:

1. a housing; 10. an accommodating chamber; 11. a first housing; 12. a second housing; 121. an annular groove; 13. an observation window; 14. connecting the ear plates; 15. a sealing layer; 16. an oil drain hole; 17. a connecting channel; 2. an alarm; 3. a liquid level detector; 4. an exhaust element; 41. a connecting pipe; 42. a blocking piece; 421. a screw; 422. a baffle plate; 43. a base; 431. an exhaust hole; 5. a secondary wiring group; 51. a wiring terminal; 52. connecting wires; 6. a signal testing element;

100. a gas relay; 101. a viewing port; 102. a secondary terminal; 103. a gas release plug; 200. a pipeline; 300. and (4) a flange.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the present invention provides an oil leakage protection device for a buchholz relay (hereinafter, referred to as an oil leakage protection device) for covering a buchholz relay 100. Both ends of the buchholz relay 100 are connected to the pipe 200 through flanges 300, respectively, and the pipe 200 is used for oil delivery to the transformer. This oil leak protection device includes shell 1 and alarm 2, and shell 1 includes two casing assembly, and two casing assembly make-up are connected to make to form between two casing assembly and hold chamber 10, buchholz relay 100 and with the flange 300 that is located buchholz relay 100's both ends all hold in holding chamber 10. Hold and be provided with level detector 3 in the chamber 10, level detector 3 is connected with alarm 2 electricity through the controller, and level detector 3 is used for detecting the liquid level of holding the interior oil leak of chamber 10, and the controller handles the detection data of level detector 3 and sends alarm signal to alarm 2. The shell assembly is provided with an observation window 13, the observation window 13 is opposite to an observation port 101 on the gas relay 100, so that an operator can observe the liquid level condition inside the gas relay 100 sequentially through the observation window 13 and the observation port 101 from the outside of the shell 1. The observation window 13 is a through hole formed in the side wall of the shell component, the containing cavity 10 is communicated with the outside through the through hole, and a transparent glass plate is arranged on the upper cover of the through hole. It is understood that the oil leakage protection apparatus is used to monitor the oil leakage of the buchholz relay 100 and collect the oil leakage. When oil leaks from the vent plug 103 or the flange 300 of the buchholz relay 100, the oil can be collected by the accommodating cavity 10, so as to prevent the leaked oil from flowing to surrounding electric power equipment to cause equipment pollution. Meanwhile, the liquid level detector 3 is used for detecting oil leaked into the accommodating cavity 10, and when the liquid level of the leaked oil in the accommodating cavity 10 reaches a set value, an alarm can be sent out through the alarm 2, so that an operator can timely handle the oil, and the safe operation of the transformer is further ensured.

The buchholz relay 100 is connected to the pipe 200 via the flange 300, and the position where oil leakage occurs includes the connection surface of the flange 300 and the bleeder plug 103 on the buchholz relay 100. The oil leakage protection device has the function of wrapping the position where oil leakage can occur inside the oil leakage protection device. Therefore, the description of the buchholz relay 100 in the present embodiment also includes the flanges 300 connected to both ends of the buchholz relay 100.

Alternatively, referring to fig. 1 and 2, the housing assembly includes two first housings 11 and two second housings 12, two second housings 12 are disposed at two opposite ends of the first housings 11, when the two housing assemblies are buckled, the two first housings 11 can be buckled together, and the two second housings 12 on one of the first housings 11 are buckled with the two second housings 12 on the other first housing 11 respectively. An accommodating cavity 10 is formed between the two first shells 11, a connecting channel 17 is formed between the two corresponding second shells 12, the connecting channel 17 is communicated with the accommodating cavity 10, and the connecting channel 17 is used for penetrating through a pipeline 200 connected with the gas relay 100. In order to ensure the sealing performance of the buckling connection of the two shell components, sealing gaskets are arranged on the abutting surfaces of the first shell 11 and the second shell 12. It is understood that the housing 1 is fixedly coupled with the pipes 200 by the second housing 12, so that the buchholz relay 100 and the flange 300 between the two pipes 200 are accommodated in the accommodating chamber 10. The second shell 12 extends along the length direction of the pipeline 200, and the structure is beneficial to increasing the contact surface between the shell 1 and the pipeline 200 and ensuring the connection tightness between the shell 1 and the pipeline 200.

The two housing assemblies are detachably connected. Specifically, be provided with on the casing subassembly and connect otic placode 14, connect otic placode 14 and be used for wearing to establish the fastener, the fastener is standard components such as screw, bolt. Each shell component is provided with a plurality of connecting lug plates 14, and the connecting lug plates 14 on the two shell components are arranged in a one-to-one correspondence manner. When the two housing components are buckled, the corresponding two connecting ear plates 14 are abutted against each other and fixed by using a fastener. In order to prevent the connecting lug plates 14 from being loosened due to vibration, a sealing ring is arranged between the two corresponding connecting lug plates 14.

Optionally, referring to fig. 5, a sealing layer 15 is disposed on an inner wall of the connecting channel 17, the sealing layer 15 is a sealing rubber ring, and the pipe 200 is inserted into the sealing layer 15. That is, the sealing layer 15 is interposed between the second casing 12 and the duct 200, and the sealing property of the connection between the outer casing 1 and the duct 200 can be further ensured. A plurality of annular grooves 121 are provided at intervals on the inner wall of the connecting passage 17 in the axial direction of the connecting passage 17. The annular groove 121 is provided to facilitate the sealing layer 15 to deform into the annular groove 121 when receiving the pressing force between the second housing 12 and the pipeline 200, so as to improve the sealing performance of the connection.

Optionally, referring to fig. 1, 3 and 4, the oil leakage protection device further comprises an air exhaust element 4, a secondary wiring set 5 and a signal testing element 6. The vent element 4, the secondary wiring block 5 and the signal testing element 6 are disposed on one of the housing assemblies. The exhaust element 4 is used to exhaust gas generated inside the buchholz relay 100 to the outside of the housing 1. The exhaust element 4 communicates with a bleed plug 103 on the buchholz relay 100. Specifically, the exhaust element 4 includes a connecting pipe 41, a blocking piece 42 and a base 43, the base 43 is disposed on the first housing 11 of the housing assembly, the base 43 is provided with a through hole, an exhaust hole 431 is disposed on a wall of the through hole, the exhaust hole 431 is communicated with the through hole, the exhaust hole 431 is plural, and the exhaust holes 431 are distributed at intervals along a circumferential direction of the base 43. One end of the connection pipe 41 is communicated with the purge plug 103, the other end of the connection pipe 41 passes through the first housing 11 and is inserted into the through hole, and the end of the connection pipe 41 is located at one side of the exhaust hole 431 close to the first housing 11. The gas in the buchholz relay 100 can be discharged to the outside of the casing 1 through the gas release plug 103, the connection pipe 41, the through hole, and the gas discharge hole 431 in this order. The blocking piece 42 is used for selectively blocking one end of the connecting tube 41 facing away from the bleeder plug 103. The block piece 42 comprises a screw 421 and a baffle 422, and the baffle 422 is disposed at one end of the screw 421 having a thread. The through hole on the side of the air vent 431 facing away from the first housing 11 has a thread therein, and the screw 421 is screwed with an end of the base 43 facing away from the first housing 11. The screw 421 is screwed to drive the baffle 422 to move along the length direction of the through hole, and the baffle 422 can selectively block the connecting pipe 41. When the air is discharged, the screw 421 is screwed and the baffle 422 is driven to move in a direction away from the first housing 11, and when the baffle 422 moves to a side of the air outlet hole 431 away from the first housing 11, the air outlet hole 431 is connected with the connecting pipe 41, so that the air is discharged. Conversely, the screw 421 is screwed and the baffle 422 is driven to move toward the first housing 11, and the baffle 422 is sealed on the connecting pipe 41, so as to close the exhaust element 4.

The secondary wiring block 5 functions to lead out the secondary terminals 102 on the buchholz relay 100 to the housing 1. The secondary wiring group 5 includes a wiring terminal 51 and a connection wire 52, the wiring terminal 51 is disposed outside the first housing 11, and both ends of the connection wire 52 are connected to the wiring terminal 51 and the secondary terminal 102, respectively.

The signal testing element 6 is used for electrical connection with the main console of the transformer. In the operation process of the transformer, when the transformer fails to operate, the gas relay 100 can send a light gas alarm signal and a heavy gas alarm signal to the main console. When the buchholz relay 100 is overhauled, the reliability of the signal sent by the buchholz relay 100 needs to be checked, but the corresponding signal switch cannot be really triggered. Therefore, a signal test element 6 is provided on the housing 1 to simulate a light gas alarm signal and a heavy gas alarm signal for inspection and repair. The signal testing element 6 is a press switch, when in use, a half stroke is pressed to correspondingly send out a light gas alarm signal, and a full stroke is pressed to correspondingly send out a heavy gas alarm signal. In order to avoid the signal testing element 6 from being started by mistake, a protective cover is covered on the signal testing element 6.

Optionally, an oil drain hole 16 is formed at the bottom of the first housing 11, the oil drain hole 16 is communicated with the accommodating chamber 10, and a hole plug is detachably disposed on the oil drain hole 16. Through setting up oil drain hole 16 to handle the oil leak that collects in holding chamber 10.

The beneficial effect of this embodiment does: through setting up shell 1, alarm 2 and liquid level detector 3, make buchholz relay 100 hold in the chamber 10 that holds of shell 1, buchholz relay 100's oil leak can be collected by shell 1, and then avoid the oil leak to flow to the power equipment on every side at will and cause equipment pollution. Meanwhile, the liquid level detector 3 is used for detecting oil leaked into the accommodating cavity 10, and when the liquid level of the leaked oil in the accommodating cavity 10 reaches a set value, an alarm can be sent out through the alarm 2, so that an operator can timely handle the oil, and the safe operation of the transformer is further ensured.

The above description is only a preferred embodiment of the present invention, and it should not be understood that the present invention is limited to the details of the embodiment and the range of applications, which can be changed by those skilled in the art according to the spirit of the present invention.

Claims (10)

1. The utility model provides a buchholz relay's oil leak protection device, a serial communication port, including shell and alarm, the shell includes two casing subassemblies, two casing subassembly is detained and is connected, two form between the casing subassembly and hold the chamber, it is used for holding buchholz relay to hold the chamber, it is provided with level detector to hold the intracavity, level detector with the alarm electricity is connected, be provided with the observation window on the casing subassembly, the observation window with buchholz relay's viewing aperture is just right.

2. The buchholz relay oil leakage protection device according to claim 1, wherein an exhaust element and a secondary wiring set are further provided on the housing assembly, the exhaust element is communicated with an exhaust plug of the buchholz relay, and the secondary wiring set is connected with a secondary terminal of the buchholz relay.

3. The buchholz relay oil leakage protection device according to claim 2, wherein the exhaust element connecting pipe has one end for communicating with the bleed hole, and the other end communicating with the outside of the housing, and a blocking member capable of selectively blocking an end of the connecting pipe facing away from the bleed hole.

4. The device for protecting against oil leakage of a buchholz relay according to claim 3, wherein said exhaust element further comprises a base, said base is disposed on said housing assembly, said base is provided with a through hole, an exhaust hole communicating with said through hole is opened on a wall of said through hole, said connecting pipe is inserted into said through hole, and said connecting pipe is located on a side of said exhaust hole close to said housing assembly, said blocking member is threadedly connected to an end of said through hole away from said housing assembly, and said blocking member is screwed to make said blocking member close to or away from said connecting pipe.

5. The buchholz relay oil leakage protection device according to claim 1, wherein the housing assembly comprises a first housing and two second housings, the two second housings are disposed at two opposite ends of the first housing, the two second housings are buckled with each other to form the accommodating cavity, the two second housings located at the same side of the housings are buckled with each other to form a connecting channel, the connecting channel is communicated with the accommodating cavity, and the connecting channel is used for passing through a pipeline connected with the buchholz relay.

6. An oil leakage protection apparatus for a buchholz relay according to claim 5, wherein a sealing layer is provided on an inner wall of the connection passage.

7. An oil leakage protection device of a gas relay according to claim 6, wherein a plurality of annular grooves are provided at intervals on the inner wall of the connection passage along the axial direction of the connection passage.

8. An oil leakage protection device of a gas relay according to claim 1, wherein the housing assembly is provided with a connection lug plate, the connection lug plate is used for penetrating a fastener, and the two housing assemblies are connected through the fastener.

9. An oil leakage protection device of a buchholz relay according to claim 8, wherein a sealing ring is interposed between the two connecting ear plates for passing through the same fastener.

10. An oil leakage protection device of a buchholz relay according to claim 1, further comprising a signal testing element mounted on said housing assembly, said signal testing element being covered with a protective cover.

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