Gas relay capable of automatically exhausting and use method thereof

Abstract

The invention discloses a gas relay capable of automatically exhausting and a using method thereof, and belongs to the technical field of transformer protection. A mounting plate and a mounting frame are fixedly mounted on the upper side of the shell, and a detection mechanism, a gas concentration detection mechanism and an automatic exhaust mechanism are mounted on the mounting plate and the mounting frame; the detection mechanism comprises a controller, a light gas detection assembly, a heavy gas detection assembly and a variable force balancing weight; the controller, the light gas detection assembly and the heavy gas detection assembly are mounted on the mounting plate and the mounting frame; a variable force balancing weight is mounted on the heavy gas detection assembly; the automatic exhaust mechanism comprises an exhaust assembly, an oil return one-way valve and a control assembly, the exhaust assembly is mounted on the mounting plate, the oil return one-way valve is mounted in the exhaust assembly, and the control assembly is mounted on the oil return one-way valve. In this way, automatic exhaust is achieved through the exhaust assembly, the oil return one-way valve and the control assembly; and the heavy gas intensity is judged through assistance of the gas concentration detection mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of transformer protection, and in particular to a gas relay capable of automatically exhausting gas and a use method thereof. Background Art

[0002] The gas relay is a protective device for the transformer. It uses the gas generated or the oil and gas surge caused by a transformer failure to connect the corresponding electronic control circuit, thereby issuing a warning when light gas occurs and cutting off the transformer circuit when heavy gas occurs, thereby achieving the effect of transformer protection.

[0003] For example, Chinese patent CN 113823522B discloses a gas relay, which is provided with a light gas detection component and a heavy gas detection component. After the heavy gas occurs, the guide plate in the heavy gas detection component is kept in the state at the time of the failure.

[0004] However, the gas generated by the transformer accumulates inside the gas relay, which will trigger a light gas signal and needs to be discharged in time; while direct exhaust is prone to incomplete exhaust or oil leakage;

[0005] At the same time, when no heavy gas occurs during the operation of the transformer, the heavy gas protection of the gas relay may still be triggered; for example, the temperature inside the transformer increases, causing the oil in the transformer to expand, resulting in the oil surging to the oil pillow; or geological vibrations occur, causing the oil in the transformer to surge to the oil pillow; both of which may trigger the heavy gas protection; making it difficult to accurately judge the actual condition of the transformer.

[0006] Based on this, the present invention designs a gas relay capable of automatic exhaust and a method of using the same to solve the above problems. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a gas relay capable of automatic exhaust and a method of using the same.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A gas relay capable of automatically exhausting gas comprises a housing and a mounting plate, and also comprises a detection mechanism, a gas concentration detection mechanism and an automatic exhaust mechanism;

[0010] Two inspection covers are rotatably mounted on the housing; oil passages for communicating with the transformer and the oil conservator are respectively arranged on both sides of the housing; an observation window is arranged on the front side of the housing;

[0011] A mounting plate is fixedly mounted on the upper side of the shell, and a mounting frame is fixedly mounted on the lower side of the mounting plate; a detection mechanism is mounted on the mounting plate and the mounting frame, a gas concentration detection mechanism is mounted on the lower side of the mounting frame, and an automatic exhaust mechanism is mounted on the mounting plate; the detection mechanism includes a controller, a light gas detection component, a heavy gas detection component and a variable force counterweight, the mounting plate is mounted with a controller, the upper side of the mounting frame is mounted with a light gas detection component, and the lower side of the mounting frame is mounted with a heavy gas detection component; a variable force counterweight is mounted on the heavy gas detection component; the light gas detection component and the heavy gas detection component are electrically connected to the controller;

[0012] The automatic exhaust mechanism includes an exhaust component, an oil return one-way valve and a control component. The exhaust component for exhausting the gas in the shell is installed on the mounting plate. The exhaust component is installed with an oil return one-way valve that allows the oil in the exhaust component to flow back into the shell. The oil return one-way valve is installed with a control component for controlling the opening and closing of the oil return one-way valve.

[0013] Furthermore, the gas concentration detection mechanism includes a first spring, a floating block, a third magnetic block and a detection module, one end of the first spring is fixedly installed on the bottom of the mounting frame, and the other end of the first spring is fixedly installed on the lower side of the floating block; the floating block is slidingly connected to the mounting frame; the third magnetic block is fixedly installed on the floating block; and the detection module is installed on the mounting frame.

[0014] Furthermore, the detection module includes a sealed tube, an insulating column, a detection resistor wire, a conductive rod and a connecting spring. The sealed tube is fixedly installed on a mounting frame, an insulating column is fixedly installed inside the sealed tube, and a detection resistor wire is evenly wound around the insulating column; the conductive rod is fixedly installed inside the sealed tube; one ends of a plurality of connecting springs are evenly fixedly installed on the conductive rod at equal intervals; one end of the detection resistor wire is electrically connected to one end of a controller detection circuit, and one end of the conductive rod is electrically connected to the other end of the controller detection circuit.

[0015] Furthermore, the exhaust assembly includes a fixing frame, an airbag, a first solenoid valve, an air duct and a second solenoid valve; a fixing frame for supporting the airbag is fixedly mounted on the mounting plate, and the airbag is fixedly mounted in the fixing frame; a first solenoid valve is fixedly mounted on the bottom of the airbag, and the airbag is connected to the interior of the shell through the first solenoid valve; an air duct is fixedly mounted on the upper side of the first solenoid valve; and a second solenoid valve for exhaust is fixedly mounted on the top of the second solenoid valve.

[0016] Furthermore, the oil return one-way valve includes a conical block, a guide rod and a second spring. An oil return hole connecting the airbag and the inside of the shell is opened at the bottom of the airbag and the fixing frame; a conical groove cooperating with the conical block is arranged on the lower side of the oil return hole; a guide rod is fixedly installed on the upper end of the conical block, and a second spring is arranged on the outer sleeve of the guide rod, one end of the second spring is fixedly connected to the conical block, and the other end of the second spring is fixedly installed on the top of the oil return hole; the guide rod is limitedly slidably connected to the top of the oil return hole.

[0017] Furthermore, the control component includes a mounting block, a rotating block, an extension rod, a connecting rod and a float, the mounting block is fixedly mounted on the top of the guide rod, and the mounting block is rotatably connected to the rotating block; an arcuate edge and a straight edge are provided at the bottom of the rotating block, and the distance between the rotation center of the rotating block and the mounting block and the arcuate edge of the rotating block is smaller than the distance between the rotation center of the rotating block and the mounting block and the straight edge of the rotating block; the lower end of the extension rod is fixedly connected to the rotating block, the upper end of the extension rod is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the float.

[0018] Furthermore, the light gas detection assembly includes a rotating frame, an open cup, a weight, a first reed switch and a first magnetic block. The middle part of the rotating frame is rotatably mounted on the upper side of the mounting frame, one end of the rotating frame is fixedly mounted with an open cup, and the other end of the rotating frame is fixedly mounted with a weight; the first reed switch is fixedly mounted on the mounting frame, and the side of the open cup is fixedly mounted with a first magnetic block that connects the reed sheet in the first reed switch.

[0019] Furthermore, the heavy gas detection assembly includes a rotating baffle, a reset torsion spring, a support frame, a second reed switch, a second magnetic block and a fixed baffle. The upper end of the rotating baffle is hinged to the mounting frame, and a reset torsion spring is sleeved on the hinge axis of the rotating baffle and the mounting frame. The two elastic legs of the reset torsion spring are respectively abutted against the mounting frame and the rotating baffle; the support frame is fixedly mounted on the mounting frame, and the second reed switch is symmetrically fixedly mounted on the support frame; a second magnetic block is fixedly mounted on the lower side of the rotating baffle to close the circuit in the second reed switch; a fixed baffle for limiting the rotating baffle is fixedly mounted on the bottom of the shell.

[0020] Furthermore, the upper side of the rotating baffle is fixedly connected to the middle part of the variable force counterweight block, the two ends of the variable force counterweight block are respectively provided with a first accommodating groove and a second accommodating groove, and the middle part of the variable force counterweight block is provided with a connecting groove for connecting the first accommodating groove and the second accommodating groove; the first accommodating groove is filled with oil.

[0021] In order to better achieve the purpose of the present invention, the present invention also provides a method for using a gas relay capable of automatic exhaust, comprising the following steps:

[0022] Step 1: Install the housing between the transformer and the oil pillow through the oil passages on both sides, start the first solenoid valve and the second solenoid valve to exhaust the air in the housing until the oil in the housing flows into the airbag, and close the first solenoid valve and the second solenoid valve;

[0023] Step 2: When the transformer fails and produces light gas, the light gas gathers in the shell and presses the oil in the shell to drop, so that the open cup moves downward and drives the rotating frame to rotate. The movement of the open cup drives the first magnetic block to move, so that the first magnetic block contacts the first reed switch, and the reed in the first reed switch is connected through the first magnetic block, thereby triggering the light gas alarm; when heavy gas occurs, the oil-gas mixture in the transformer quickly rushes into the shell, and the oil-gas mixture impacts the rotating baffle to rotate the rotating baffle; as the rotating baffle rotates and tilts, the oil-gas mixture in the shell The impact force on the rotating baffle is reduced, and the reset torsion spring is twisted; at this time, the variable force counterweight is tilted, so that the position of the first receiving groove is higher than the second receiving groove, and the oil in the first receiving groove flows into the second receiving groove, so that the variable force counterweight and the gravity of the oil move to the other side of the rotating baffle; the rotating baffle rotates under the impact force of the oil-gas mixture and the gravity of the variable force counterweight and the oil inside it, thereby driving the second magnetic block to move until the second magnetic block contacts the second reed switch, so that the reed in the second reed switch is connected, triggering the heavy gas protection;

[0024] Step 3: There are a large number of bubbles in the oil in the shell, which reduces the buoyancy of the floating block in the shell. The floating block moves vertically downward under the action of gravity and the reset force of the first spring, thereby driving the third magnetic block to move vertically downward, so that the connecting spring sheet close to the third magnetic block contacts the detection resistor wire. At this time, the length of the resistor wire connected to the circuit of the detection resistor wire is shorter; by detecting the current of the corresponding circuit, the length of the detection resistor wire connected to the circuit is determined, the position of the connecting spring sheet connected to the detection resistor wire is determined, and the positions of the third magnetic block and the floating block are determined; thereby determining the bubble content in the oil in the shell, and assisting in determining whether there is heavy gas and the strength of the heavy gas;

[0025] Step 4: Start the first solenoid valve to allow the gas in the shell to flow into the airbag through the air guide pipe, and the airbag expands; until the oil in the gas settles in the airbag, and then open the second solenoid valve to discharge the gas in the airbag; the oil in the airbag continues to accumulate, and as the oil in the airbag rises, the oil drives the float to move upward, and the float drives the connecting rod to rotate, and then the oil continues to rise to cause the connecting rod to drive the rotating block to rotate through the extension rod, so that the straight edge of the bottom of the rotating block far from the rotation center abuts against the airbag, and the rotating block remains stable; in this process, the rotating block drives the mounting block to move upward, and the mounting block drives the guide rod and the tapered block to move vertically upward, so that the tapered block is separated from the tapered groove in the oil return hole, and the second spring is compressed; so that the oil in the airbag flows back to the shell through the oil return hole; the oil in the airbag drops, the float and the connecting rod rotate, and the paper oil completely separates from the float; at this time, under the action of the gravity of the float and the connecting rod, the rotating block is driven to reset through the extension rod; the second spring resets, so that the tapered block resets.

[0026] Compared with the prior art, the present invention has the following beneficial effects: 1. The shell is installed between the transformer and the oil pillow through the oil passages on both sides; the gas in the shell is discharged through the exhaust assembly, and the oil and gas conditions in the shell are observed through the observation window during the process to ensure that the gas in the shell is emptied; when a transformer fails to operate and light gas is generated, the light gas gathers in the shell and causes the oil in the shell to drop, thereby triggering the light gas detection assembly; when heavy gas is generated, the oil-gas mixture in the transformer quickly surges into the shell, thereby triggering the heavy gas detection assembly; when heavy gas is generated, the sensitivity of the heavy gas detection assembly is guaranteed without affecting the triggering strength of the heavy gas through the variable force counterweight block; when exhaust is required, the exhaust assembly is started to allow the gas in the shell to flow into the exhaust assembly and merge with the oil in the exhaust assembly; after the oil in the gas settles, the gas in the exhaust assembly is discharged to avoid pollution caused by direct exhaust;

[0027] 2. When a lot of oil accumulates in the exhaust component, the control component opens the oil return check valve to allow the oil in the exhaust component to flow back into the shell, thereby achieving automatic recovery of the oil;

[0028] 3. At the same time, when the heavy gas is triggered, the gas concentration in the oil-gas mixture in the shell is detected through the gas concentration detection mechanism; after the heavy gas is triggered, the gas concentration detection mechanism can be used to assist in determining the cause of the triggering of the heavy gas, and at the same time determine the intensity of the heavy gas; this makes it easier to understand the actual condition of the transformer, and in special conditions (such as the increase in oil temperature in the transformer causing the oil to expand and cause the oil to flow into the shell, or an earthquake causing the oil in the transformer to vibrate and flow into the shell), it can be more accurately determined whether the transformer is triggered by a fault and the heavy gas is triggered; if it is determined to be non-fault triggered, then when it is not convenient to immediately check the transformer condition, the transformer can be reactivated to ensure power on. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A three-dimensional diagram of a gas relay capable of automatically exhausting gas according to the present invention;

[0031] Figure 2 It is a front view of a gas relay capable of automatically exhausting gas according to the present invention;

[0032] Figure 3 It is a right side view of a gas relay capable of automatically exhausting gas according to the present invention;

[0033] Figure 4 A three-dimensional view of a gas relay capable of automatically exhausting gas after removing the housing and the inspection cover of the gas relay Figure 1 ;

[0034] Figure 5 For along Figure 2 AA direction cross-sectional view;

[0035] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0036] Figure 7 For along Figure 3 BB direction cross-sectional view;

[0037] Figure 8 A three-dimensional view of a gas relay capable of automatically exhausting gas after removing the housing and the inspection cover of the gas relay Figure 2 ;

[0038] Fig. 9 for Figure 7 The enlarged view of point D in the middle;

[0039] Fig.10 for Figure 7 The enlarged image at E in the middle;

[0040] Fig.11 Schematic diagram of the float and its connection structure.

[0041] The numbers in the figure represent:

[0042] 1. Shell; 11. Inspection cover; 12. Oil channel; 13. Observation window; 2. Mounting plate; 21. Mounting frame; 3. Detection mechanism; 31. Controller; 32. Light gas detection assembly; 321. Rotating frame; 322. Open cup; 323. Heavy hammer; 324. First reed switch; 325. First magnetic block; 33. Heavy gas detection assembly; 331. Rotating baffle; 332. Reset torsion spring; 333. Support frame; 334. Second reed switch; 335. Second magnetic block; 336. Fixed baffle; 34. Variable force counterweight block; 341. Connecting groove; 342. First containing groove; 343. Second containing groove; 4. Gas concentration Detection mechanism; 41. first spring; 42. floating block; 43. third magnetic block; 44. sealing tube; 45. insulating column; 46. detection resistance wire; 47. conductive rod; 48. connecting spring; 5. automatic exhaust mechanism; 51. exhaust assembly; 511. fixing frame; 512. air bag; 513. first solenoid valve; 514. air guide pipe; 515. second solenoid valve; 52. return oil one-way valve; 521. return oil hole; 522. conical block; 523. guide rod; 524. second spring; 53. control assembly; 531. mounting block; 532. rotating block; 533. extension rod; 534. connecting rod; 535. float. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0045] Embodiment 1: In some embodiments, please refer to the drawings of the specification Figure 1-Figure 8 , a gas relay capable of automatic exhaust, comprising a housing 1 and a mounting plate 2; further comprising a detection mechanism 3, a gas concentration detection mechanism 4 and an automatic exhaust mechanism 5;

[0046] Two inspection covers 11 are rotatably mounted on the housing 1; oil passages 12 for communicating with the transformer and the oil conservator are respectively arranged on both sides of the housing 1; an observation window 13 is arranged on the front side of the housing 1;

[0047] A mounting plate 2 is fixedly mounted on the upper side of the housing 1, and a mounting frame 21 is fixedly mounted on the lower side of the mounting plate 2; a detection mechanism 3 is mounted on the mounting plate 2 and the mounting frame 21, a gas concentration detection mechanism 4 is mounted on the lower side of the mounting frame 21, and an automatic exhaust mechanism 5 is mounted on the mounting plate 2; the detection mechanism 3 includes a controller 31, a light gas detection component 32, a heavy gas detection component 33 and a variable force counterweight 34, the controller 31 is mounted on the mounting plate 2, the light gas detection component 32 is mounted on the upper side of the mounting frame 21, and the heavy gas detection component 33 is mounted on the lower side of the mounting frame 21; a variable force counterweight 34 is mounted on the heavy gas detection component 33; the light gas detection component 32 and the heavy gas detection component 33 are electrically connected to the controller 31;

[0048] The automatic exhaust mechanism 5 includes an exhaust component 51, an oil return one-way valve 52 and a control component 53. The exhaust component 51 for exhausting the gas in the shell 1 is installed on the mounting plate 2. The exhaust component 51 is installed with an oil return one-way valve 52 for allowing the oil in the exhaust component 51 to flow back into the shell 1. The oil return one-way valve 52 is installed with a control component 53 for controlling the opening and closing of the oil return one-way valve 52.

[0049] In this embodiment, when the gas relay with automatic exhaust is working normally, the housing 1 is installed between the transformer and the oil conservator through the oil passages 12 on both sides; the gas in the housing 1 is exhausted through the exhaust assembly 51, and the gas is discharged through the observation window 1 during the process. 3. Observe the oil and gas conditions in the shell 1 to ensure that the gas in the shell 1 is emptied; when the transformer fails to operate and light gas is generated, the light gas gathers in the shell 1 and causes the oil in the shell 1 to drop, thereby triggering the light gas detection component 32; when heavy gas is generated, the oil-gas mixture in the transformer quickly surges into the shell 1, thereby triggering the heavy gas detection component 33; when heavy gas is generated, the variable force counterweight block 34 is used to ensure the sensitivity of the heavy gas detection component 33 without affecting the triggering strength of the heavy gas; when exhaust is required, start the exhaust component 51 to make the gas in the shell 1 flow into the exhaust component 51 and merge with the oil in the exhaust component 51; after the oil in the gas settles, the gas in the exhaust component 51 is discharged to avoid pollution caused by direct exhaust; when a lot of oil accumulates in the exhaust component 51, the control component 53 opens the oil return check valve 52 to make the oil in the exhaust component 51 flow back into the shell 1; thereby realizing automatic recovery of the oil;

[0050] At the same time, when the heavy gas is triggered, the gas concentration in the oil-gas mixture in the shell 1 is detected through the gas concentration detection mechanism 4; after the heavy gas is triggered, the gas concentration detection mechanism 4 can be used to assist in determining the cause of the triggering of the heavy gas, and at the same time determine the strength of the heavy gas; thereby facilitating understanding of the actual condition of the transformer, and in special conditions such as when the oil temperature in the transformer increases, causing the oil to expand and cause the oil to flow into the shell 1, or when an earthquake occurs, causing the oil in the transformer to vibrate and flow into the shell 1, it can be more accurately determined whether the transformer is triggered by a fault and the heavy gas is triggered; if it is determined to be non-fault triggered, then when it is not convenient to immediately check the transformer condition, the transformer can be reactivated to ensure power on.

[0051] Embodiment 2: In some embodiments, Figure 1 , Figure 3 and Figure 5 As shown, as a preferred embodiment of the present invention, a detection circuit is provided in the controller 31; the detection circuit module includes a power supply and a multimeter connected in series through a wire;

[0052] The gas concentration detection mechanism 4 includes a first spring 41, a floating block 42, a third magnetic block 43 and a detection module, one end of the first spring 41 is fixedly mounted on the bottom of the mounting frame 21, and the other end of the first spring 41 is fixedly mounted on the lower side of the floating block 42; the floating block 42 is limitedly slidably connected to the mounting frame 21; the third magnetic block 43 is fixedly mounted on the floating block 42; the detection module is mounted on the mounting frame 21;

[0053] The detection module includes a sealing tube 44, an insulating column 45, a detection resistor wire 46, a conductive rod 47 and a connecting spring 48. The sealing tube 44 is fixedly mounted on the mounting frame 21, and the insulating column 45 is fixedly mounted in the sealing tube 44. The detection resistor wire 46 is evenly wound on the insulating column 45; the conductive rod 47 is fixedly mounted in the sealing tube 44; one end of a plurality of connecting springs 48 is evenly fixedly mounted on the conductive rod 47 at equal intervals; one end of the detection resistor wire 46 is electrically connected to one end of the detection circuit of the controller 31, and one end of the conductive rod 47 is electrically connected to the other end of the detection circuit of the controller 31;

[0054] The exhaust assembly 51 includes a fixing frame 511, an airbag 512, a first solenoid valve 513, an air guide pipe 514 and a second solenoid valve 515. The fixing frame 511 for supporting the airbag 512 is fixedly installed on the mounting plate 2, and the airbag 512 is fixedly installed in the fixing frame 511; the first solenoid valve 513 is fixedly installed at the bottom of the airbag 512, and the airbag 512 is connected to the inside of the housing 1 through the first solenoid valve 513; the air guide pipe 514 is fixedly installed on the upper side of the first solenoid valve 513; the second solenoid valve 515 for exhaust is fixedly installed on the top of the second solenoid valve 515;

[0055] The oil return one-way valve 52 comprises a conical block 522, a guide rod 523 and a second spring 524. The bottom of the airbag 512 and the fixing frame 511 are provided with an oil return hole 521 connecting the airbag 512 and the inside of the housing 1; the lower side of the oil return hole 521 is provided with a conical groove matching the conical block 522; the upper end of the conical block 522 is fixedly installed with a guide rod 523, and the outer sleeve of the guide rod 523 is provided with a second spring 524, one end of the second spring 524 is fixedly connected to the conical block 522, and the other end of the second spring 524 is fixedly installed on the top of the oil return hole 521; the guide rod 523 is limitedly slidably connected with the top of the oil return hole 521;

[0056] The control assembly 53 includes a mounting block 531, a rotating block 532, an extension rod 533, a connecting rod 534 and a floating ball 535. The mounting block 531 is fixedly mounted on the top of the guide rod 523, and the mounting block 531 is rotatably connected to the rotating block 532. The bottom of the rotating block 532 is provided with an arcuate edge and a straight edge, and the distance between the rotation center of the rotating block 532 and the mounting block 531 and the arcuate edge of the rotating block 532 is smaller than the distance between the rotation center of the rotating block 532 and the mounting block 531 and the straight edge of the rotating block 532. The lower end of the extension rod 533 is fixedly connected to the rotating block 532, the upper end of the extension rod 533 is rotatably connected to one end of the connecting rod 534, and the other end of the connecting rod 534 is fixedly connected to the floating ball 535.

[0057] The light gas detection assembly 32 comprises a rotating frame 321, an open cup 322, a weight 323, a first reed switch 324 and a first magnetic block 325. The middle part of the rotating frame 321 is rotatably mounted on the upper side of the mounting frame 21, the open cup 322 is fixedly mounted on one end of the rotating frame 321, and the weight 323 is fixedly mounted on the other end of the rotating frame 321; the first reed switch 324 is fixedly mounted on the mounting frame 21, and the side of the open cup 322 is fixedly mounted with a first magnetic block 325 that connects the reed sheet in the first reed switch 324;

[0058] The heavy gas detection assembly 33 includes a rotating baffle 331, a reset torsion spring 332, a support frame 333, a second reed switch 334, a second magnetic block 335 and a fixed baffle 336. The upper end of the rotating baffle 331 is hinged to the mounting frame 21. A reset torsion spring 332 is sleeved on the hinge axis of the rotating baffle 331 and the mounting frame 21. Two elastic legs of the reset torsion spring 332 are respectively in contact with the mounting frame 21 and the rotating baffle 331; the support frame 333 is fixedly mounted on the mounting frame 21, and the second reed switch 334 is symmetrically fixedly mounted on the support frame 333; the second magnetic block 335 that closes the circuit in the second reed switch 334 is fixedly mounted on the lower side of the rotating baffle 331; and a fixed baffle 336 for limiting the rotating baffle 331 is fixedly mounted on the bottom of the housing 1;

[0059] The first reed switch 324 and the second reed switch 334 are electrically connected to the controller 31 respectively;

[0060] The upper side of the rotating baffle 331 is fixedly connected to the middle part of the variable force counterweight block 34. The two ends of the variable force counterweight block 34 are respectively provided with a first accommodating groove 342 and a second accommodating groove 343. The middle part of the variable force counterweight block 34 is provided with a connecting groove 341 for connecting the first accommodating groove 342 and the second accommodating groove 343; the first accommodating groove 342 is filled with oil.

[0061] In this embodiment, when the detection mechanism 3, the gas concentration detection mechanism 4 and the automatic exhaust mechanism 5 work normally, in the initial state, the first receiving groove 342 in the variable force counterweight block 34 is lower than the second receiving groove 343, so that the oil in the variable force counterweight block 34 is gathered in the first receiving groove 342; the rotating baffle 331 rotates toward the transformer under the torsion of the reset torsion spring 332 and the gravity of the variable force counterweight block 34, that is, the internal oil, and is blocked by the fixed baffle 336, so that the rotating baffle 331 remains vertical; the floating block 42 sinks in the oil, and the floating block 42 moves upward under the action of buoyancy and drives the first spring 41 to stretch; at this time, the third magnetic block 43 on the floating block 42 is in a higher position; through The third magnetic block 43 causes the connecting spring piece 48 at the corresponding position on the conductive rod 47 in the sealing tube 44 to rotate and contact the detection resistor 46; at this time, the length of the resistor wire connected to the circuit by the detection resistor 46 is relatively long; at the same time, the second spring 524 pushes the conical block 522 downward, so that the conical block 522 is closely attached to the conical groove in the oil return hole 521, thereby closing the oil return hole 521; and the floating ball 535 presses down the rotating block 532 through the connecting rod 534 and the extension rod 533, so that the side of the rotating block 532 that is shorter than the rotation center of the rotating block 532 and the mounting block 531 contacts the airbag 512, so that the conical block 522 is kept in a state of being closely attached to the conical groove in the oil return hole 521 through the mounting block 531 and the guide rod 523;

[0062] Before starting the transformer, the first solenoid valve 513 and the second solenoid valve 515 are activated to exhaust the air in the housing 1 until part of the oil in the housing 1 flows into the airbag 512; thereby ensuring that the gas in the housing 1 is exhausted and preventing the oil from flowing into the outside of the housing 1 and causing pollution; then the first solenoid valve 513 and the second solenoid valve 515 are closed;

[0063] When the transformer fails and produces light gas, the light gas gathers in the shell 1 and presses the oil in the shell 1 to descend, so that the open cup 322 moves downward and drives the rotating frame 321 to rotate. The movement of the open cup 322 drives the first magnetic block 325 to move, so that the first magnetic block 325 contacts the first reed switch 324, and the reed in the first reed switch 324 is connected through the first magnetic block 325, thereby triggering the light gas alarm; when heavy gas occurs, the oil-gas mixture in the transformer quickly rushes into the shell 1, and the oil-gas mixture impacts the rotating baffle 331 to rotate the rotating baffle 331; as the rotating baffle 331 rotates and tilts, the oil-gas mixture in the shell 1 hits the rotating baffle 331. The impact force of the plate 331 is reduced, and the reset torsion spring 332 is twisted; at this time, the variable force counterweight block 34 is tilted, so that the position of the first receiving groove 342 is higher than the second receiving groove 343, and the oil in the first receiving groove 342 flows into the second receiving groove 343, so that the variable force counterweight block 34 and the gravity of the oil move to the other side of the rotating baffle 331; the rotating baffle 331 rotates under the impact force of the oil-gas mixture and the gravity of the variable force counterweight block 34 and the oil inside, thereby driving the second magnetic block 335 to move until the second magnetic block 335 contacts the second reed switch 334, so that the reed in the second reed switch 334 is connected, triggering the heavy gas protection;

[0064] At this time, there are a large number of bubbles in the oil in the housing 1, which reduces the buoyancy of the floating block 42 in the housing 1. The floating block 42 moves vertically downward under the action of gravity and the reset force of the first spring 41, thereby driving the third magnetic block 43 to move vertically downward, so that the connecting spring 48 close to the third magnetic block 43 contacts the detection resistor 46. At this time, the length of the resistance wire connected to the circuit of the detection resistor 46 is shorter; by detecting the current of the corresponding circuit, the length of the detection resistor 46 connected to the circuit is determined, the position of the connecting spring 48 connected to the detection resistor 46 is determined, and the positions of the third magnetic block 43 and the floating block 42 are determined; thereby determining the bubble content in the oil in the housing 1, and assisting in determining whether there is heavy gas and the strength of the heavy gas;

[0065] The first solenoid valve 513 is activated to allow the gas in the housing 1 to flow into the airbag 512 through the air guide pipe 514, and the airbag 512 expands; until the oil in the gas settles in the airbag 512, and then the second solenoid valve 515 is opened to discharge the gas in the airbag 512; the oil in the airbag 512 continues to accumulate, and as the oil in the airbag 512 rises, the oil drives the float 535 to move upward, and the float 535 drives the connecting rod 534 to rotate, and then the oil continues to rise, causing the connecting rod 534 to drive the rotating block 532 to rotate through the extension rod 533, so that the straight edge of the bottom of the rotating block 532 far from the rotation center abuts against the airbag 512, and the rotating block 532 Keep stable; in this process, the rotating block 532 drives the mounting block 531 to move upward, and the mounting block 531 drives the guide rod 523 and the tapered block 522 to move vertically upward, so that the tapered block 522 is separated from the tapered groove in the oil return hole 521, and the second spring 524 is compressed; thereby, the oil in the airbag 512 flows back into the housing 1 through the oil return hole 521; the oil in the airbag 512 descends, the float 535 and the connecting rod 534 rotate, and the paper oil completely separates from the float 535; at this time, under the action of the gravity of the float 535 and the connecting rod 534, the rotating block 532 is driven to reset through the extension rod 533; the second spring 524 is reset, so that the tapered block 522 is reset.

[0066] Embodiment 3: In some embodiments, Figure 1-Figure 11 As shown, as a preferred embodiment of the present invention, a method for using a gas relay capable of automatically exhausting gas comprises the following steps:

[0067] Step 1: Install the housing 1 between the transformer and the oil conservator through the oil passages 12 on both sides, start the first solenoid valve 513 and the second solenoid valve 515 to exhaust the air in the housing 1 until the oil in the housing 1 flows into the airbag 512, and close the first solenoid valve 513 and the second solenoid valve 515;

[0068] Step 2: When the transformer fails and produces light gas, the light gas gathers in the shell 1 and presses the oil in the shell 1 to descend, so that the open cup 322 moves downward and drives the rotating frame 321 to rotate. The movement of the open cup 322 drives the first magnetic block 325 to move, so that the first magnetic block 325 contacts the first reed switch 324, and the reed in the first reed switch 324 is connected through the first magnetic block 325, thereby triggering the light gas alarm; when heavy gas occurs, the oil-gas mixture in the transformer quickly rushes into the shell 1, and the oil-gas mixture impacts the rotating baffle 331 to rotate the rotating baffle 331; as the rotating baffle 331 rotates and tilts, the oil-gas mixture in the shell 1 is against the rotating baffle 331. The impact force of the baffle 331 is reduced, and the reset torsion spring 332 is twisted; at this time, the variable force counterweight block 34 is tilted, so that the position of the first receiving groove 342 is higher than the second receiving groove 343, and the oil in the first receiving groove 342 flows into the second receiving groove 343, so that the variable force counterweight block 34 and the gravity of the oil move to the other side of the rotating baffle 331; the rotating baffle 331 rotates under the impact force of the oil-gas mixture and the gravity of the variable force counterweight block 34 and the oil inside, thereby driving the second magnetic block 335 to move until the second magnetic block 335 contacts the second reed switch 334, so that the reed in the second reed switch 334 is connected, triggering the heavy gas protection;

[0069] Step 3: There are a large number of bubbles in the oil in the housing 1, which reduces the buoyancy of the floating block 42 in the housing 1. The floating block 42 moves vertically downward under the action of gravity and the reset force of the first spring 41, thereby driving the third magnetic block 43 to move vertically downward, so that the connecting spring 48 close to the third magnetic block 43 contacts the detection resistor 46. At this time, the length of the resistance wire connected to the circuit of the detection resistor 46 is shorter; by detecting the current of the corresponding circuit, the length of the detection resistor 46 connected to the circuit is determined, the position of the connecting spring 48 connected to the detection resistor 46 is determined, and the positions of the third magnetic block 43 and the floating block 42 are determined; thereby determining the bubble content in the oil in the housing 1, and assisting in determining whether there is heavy gas and the strength of the heavy gas;

[0070] Step 4: Start the first solenoid valve 513 to allow the gas in the housing 1 to flow into the airbag 512 through the air guide pipe 514, and the airbag 512 expands; until the oil in the gas settles in the airbag 512, then open the second solenoid valve 515 to discharge the gas in the airbag 512; the oil in the airbag 512 continues to accumulate, and as the oil in the airbag 512 rises, the oil drives the float 535 to move upward, and the float 535 drives the connecting rod 534 to rotate, and then the oil continues to rise to cause the connecting rod 534 to drive the rotating block 532 to rotate through the extension rod 533, so that the straight edge of the bottom of the rotating block 532 far from the rotation center abuts against the airbag 512, and the rotating block 5 32 remains stable; during this process, the rotating block 532 drives the mounting block 531 to move upward, and the mounting block 531 drives the guide rod 523 and the tapered block 522 to move vertically upward, so that the tapered block 522 is separated from the tapered groove in the oil return hole 521, and the second spring 524 is compressed; thereby, the oil in the airbag 512 flows back into the housing 1 through the oil return hole 521; the oil in the airbag 512 descends, the float 535 and the connecting rod 534 rotate, and the paper oil completely separates from the float 535; at this time, under the action of the gravity of the float 535 and the connecting rod 534, the rotating block 532 is driven to reset through the extension rod 533; the second spring 524 is reset, so that the tapered block 522 is reset.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas relay capable of automatically exhausting gas, comprising a housing (1) and a mounting plate (2), characterized in that: It also includes a detection mechanism (3), a gas concentration detection mechanism (4) and an automatic exhaust mechanism (5); Two inspection covers (11) are rotatably mounted on the housing (1); oil passages (12) for communicating with the transformer and the oil conservator are respectively arranged on both sides of the housing (1); and an observation window (13) is arranged on the front side of the housing (1); A mounting plate (2) is fixedly mounted on the upper side of the housing (1), and a mounting frame (21) is fixedly mounted on the lower side of the mounting plate (2); a detection mechanism (3) is mounted on the mounting plate (2) and the mounting frame (21), a gas concentration detection mechanism (4) is mounted on the lower side of the mounting frame (21), and an automatic exhaust mechanism (5) is mounted on the mounting plate (2); the detection mechanism (3) comprises a controller (31), a light gas detection component (32), a heavy gas detection component (33) and a variable force counterweight (34); the controller (31) is mounted on the mounting plate (2), the light gas detection component (32) is mounted on the upper side of the mounting frame (21), and the heavy gas detection component (33) is mounted on the lower side of the mounting frame (21); a variable force counterweight (34) is mounted on the heavy gas detection component (33); the light gas detection component (32) and the heavy gas detection component (33) are electrically connected to the controller (31); The automatic exhaust mechanism (5) comprises an exhaust component (51), an oil return check valve (52) and a control component (53); the exhaust component (51) for exhausting gas in the housing (1) is mounted on the mounting plate (2); the exhaust component (51) is mounted with an oil return check valve (52) for allowing oil in the exhaust component (51) to flow back into the housing (1); and the oil return check valve (52) is mounted with a control component (53) for controlling the opening and closing of the oil return check valve (52).

2. The gas relay capable of automatically exhausting gas according to claim 1, characterized in that: The gas concentration detection mechanism (4) comprises a first spring (41), a floating block (42), a third magnetic block (43) and a detection module, wherein one end of the first spring (41) is fixedly mounted on the bottom of the mounting frame (21), and the other end of the first spring (41) is fixedly mounted on the lower side of the floating block (42); the floating block (42) is limitedly slidably connected to the mounting frame (21); the third magnetic block (43) is fixedly mounted on the floating block (42); and the detection module is mounted on the mounting frame (21).

3. The gas relay capable of automatically exhausting gas according to claim 2, characterized in that: The detection module comprises a sealing tube (44), an insulating column (45), a detection resistance wire (46), a conductive rod (47) and a connecting spring sheet (48); the sealing tube (44) is fixedly mounted on a mounting frame (21); an insulating column (45) is fixedly mounted inside the sealing tube (44); a detection resistance wire (46) is evenly wound around the insulating column (45); the conductive rod (47) is fixedly mounted inside the sealing tube (44); one end of a plurality of connecting spring sheets (48) are evenly fixedly mounted on the conductive rod (47) at equal intervals; one end of the detection resistance wire (46) is electrically connected to one end of a detection circuit of a controller (31), and one end of the conductive rod (47) is electrically connected to the other end of the detection circuit of the controller (31).

4. The gas relay capable of automatically exhausting gas according to claim 3, characterized in that: The exhaust assembly (51) comprises a fixing frame (511), an air bag (512), a first solenoid valve (513), an air guide pipe (514) and a second solenoid valve (515); a fixing frame (511) for supporting the air bag (512) is fixedly mounted on the mounting plate (2); the air bag (512) is fixedly mounted in the fixing frame (511); a first solenoid valve (513) is fixedly mounted on the bottom of the air bag (512); the air bag (512) is connected to the interior of the housing (1) through the first solenoid valve (513); an air guide pipe (514) is fixedly mounted on the upper side of the first solenoid valve (513); and a second solenoid valve (515) for exhausting air is fixedly mounted on the top of the second solenoid valve (515).

5. The gas relay capable of automatically exhausting gas according to claim 4, characterized in that: The oil return one-way valve (52) comprises a conical block (522), a guide rod (523) and a second spring (524); an oil return hole (521) communicating the air bag (512) and the interior of the housing (1) is provided at the bottom of the air bag (512) and the fixing frame (511); a conical groove cooperating with the conical block (522) is provided at the lower side of the oil return hole (521); a guide rod (523) is fixedly mounted on the upper end of the conical block (522); a second spring (524) is provided on the outer sleeve of the guide rod (523); one end of the second spring (524) is fixedly connected to the conical block (522), and the other end of the second spring (524) is fixedly mounted on the top of the oil return hole (521); and the guide rod (523) is limitedly slidably connected to the top of the oil return hole (521).

6. The gas relay capable of automatically exhausting gas according to claim 5, characterized in that: The control assembly (53) comprises a mounting block (531), a rotating block (532), an extension rod (533), a connecting rod (534) and a floating ball (535). The mounting block (531) is fixedly mounted on the top of the guide rod (523), and the mounting block (531) is rotatably connected to the rotating block (532). The bottom of the rotating block (532) is provided with an arcuate edge and a straight edge, and the distance between the rotation center of the rotating block (532) and the mounting block (531) and the arcuate edge of the rotating block (532) is smaller than the distance between the rotation center of the rotating block (532) and the mounting block (531) and the straight edge of the rotating block (532). The lower end of the extension rod (533) is fixedly connected to the rotating block (532), the upper end of the extension rod (533) is rotatably connected to one end of the connecting rod (534), and the other end of the connecting rod (534) is fixedly connected to the floating ball (535).

7. The gas relay capable of automatically exhausting gas according to claim 6, characterized in that: The light gas detection assembly (32) comprises a rotating frame (321), an open cup (322), a weight (323), a first reed switch (324) and a first magnetic block (325); the middle part of the rotating frame (321) is rotatably mounted on the upper side of the mounting frame (21); the open cup (322) is fixedly mounted on one end of the rotating frame (321); and the weight (323) is fixedly mounted on the other end of the rotating frame (321); the first reed switch (324) is fixedly mounted on the mounting frame (21); and the side of the open cup (322) is fixedly mounted with a first magnetic block (325) for connecting the reed sheet in the first reed switch (324).

8. The gas relay capable of automatically exhausting gas according to claim 7, characterized in that: The heavy gas detection assembly (33) comprises a rotating baffle (331), a reset torsion spring (332), a support frame (333), a second reed switch (334), a second magnetic block (335) and a fixed baffle (336). The upper end of the rotating baffle (331) is hinged to the mounting frame (21). The hinge axis of the rotating baffle (331) and the mounting frame (21) is sleeved with a reset torsion spring (332). The two elastic legs of the reset torsion spring (332) are respectively connected to the mounting frame (21). The mounting frame (21) and the rotating baffle (331) are in contact with each other; the support frame (333) is fixedly mounted on the mounting frame (21), and a second reed switch (334) is symmetrically fixedly mounted on the support frame (333); a second magnetic block (335) for closing the circuit in the second reed switch (334) is fixedly mounted on the lower side of the rotating baffle (331); and a fixed baffle (336) for limiting the rotating baffle (331) is fixedly mounted on the bottom of the housing (1).

9. The gas relay capable of automatically exhausting gas according to claim 8, characterized in that: The upper side of the rotating baffle (331) is fixedly connected to the middle of the variable force counterweight (34); the two ends of the variable force counterweight (34) are respectively provided with a first receiving groove (342) and a second receiving groove (343); the middle of the variable force counterweight (34) is provided with a connecting groove (341) for connecting the first receiving groove (342) and the second receiving groove (343); the first receiving groove (342) is filled with oil.

10. A method of use, using the gas relay capable of automatic exhaust as claimed in claim 9, characterized in that: The following steps are involved: Step 1: Install the housing (1) between the transformer and the oil pillow through the oil passages (12) on both sides, start the first solenoid valve (513) and the second solenoid valve (515) to exhaust the air in the housing (1) until the oil in the housing (1) flows into the air bag (512), and close the first solenoid valve (513) and the second solenoid valve (515); Step 2: When a transformer fails and produces light gas, the light gas gathers in the housing (1) and presses the oil in the housing (1) to descend, causing the open cup (322) to move downward and drive the rotating frame (321) to rotate. The movement of the open cup (322) drives the first magnetic block (325) to move, causing the first magnetic block (325) to contact the first reed switch (324). The reed in the first reed switch (324) is connected through the first magnetic block (325), thereby triggering a light gas alarm. When heavy gas occurs, the oil-gas mixture in the transformer quickly flows into the housing (1), and the oil-gas mixture impacts the rotating baffle (331), causing the rotating baffle (331) to rotate. As the rotating baffle (331) rotates and tilts, the oil-gas mixture in the housing (1) is pressed against the rotating baffle (331). The impact force of the baffle (331) is reduced, and the reset torsion spring (332) is twisted; at this time, the variable force counterweight (34) is tilted, so that the position of the first receiving groove (342) is higher than the second receiving groove (343), and the oil in the first receiving groove (342) flows into the second receiving groove (343), so that the variable force counterweight (34) and the gravity of the oil move to the other side of the rotating baffle (331); the rotating baffle (331) rotates under the impact force of the oil-gas mixture and the gravity of the variable force counterweight (34) and the oil inside, thereby driving the second magnetic block (335) to move until the second magnetic block (335) contacts the second reed switch (334), so that the reed in the second reed switch (334) is connected, triggering the heavy gas protection; Step 3: A large number of bubbles exist in the oil in the housing (1), so that the buoyancy of the floating block (42) in the housing (1) is reduced, and the floating block (42) moves vertically downward under the action of gravity and the reset force of the first spring (41), thereby driving the third magnetic block (43) to move vertically downward, so that the connecting spring piece (48) close to the third magnetic block (43) contacts the detection resistor (46), and at this time, the length of the resistor (46) connected to the circuit is shorter; by detecting the current of the corresponding circuit, the length of the detection resistor (46) connected to the circuit is determined, the position of the connecting spring piece (48) connected to the detection resistor (46) is determined, and the positions of the third magnetic block (43) and the floating block (42) are determined; thereby determining the bubble content in the oil in the housing (1), and assisting in determining whether heavy gas exists and the strength of the heavy gas; Step 4: Start the first solenoid valve (513) to allow the gas in the housing (1) to flow into the airbag (512) through the air guide tube (514), and the airbag (512) to expand; until the oil in the gas settles in the airbag (512), and then open the second solenoid valve (515) to discharge the gas in the airbag (512); the oil in the airbag (512) continues to accumulate, and as the oil in the airbag (512) rises, the oil drives the float (535) to move upward, and the float (535) drives the connecting rod (534) to rotate, and then the oil continues to rise to cause the connecting rod (534) to drive the rotating block (532) to rotate through the extension rod (533), so that the straight edge of the bottom of the rotating block (532) far from the rotation center abuts against the airbag (512), and the rotating block (532) The rotating block (532) drives the mounting block (531) to move upwards during this process, and the mounting block (531) drives the guide rod (523) and the tapered block (522) to move vertically upwards, so that the tapered block (522) is separated from the tapered groove in the oil return hole (521), and the second spring (524) is compressed; thereby, the oil in the airbag (512) flows back into the housing (1) through the oil return hole (521); the oil in the airbag (512) descends, the float (535) and the connecting rod (534) rotate, and the paper oil completely separates from the float (535); at this time, under the action of the gravity of the float (535) and the connecting rod (534), the rotating block (532) is driven to reset through the extension rod (533); the second spring (524) is reset, so that the tapered block (522) is reset.

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