CN116164141A - Pressure release valve device of on-load tap-changer - Google Patents
Pressure release valve device of on-load tap-changer Download PDFInfo
- Publication number
- CN116164141A CN116164141A CN202310100487.XA CN202310100487A CN116164141A CN 116164141 A CN116164141 A CN 116164141A CN 202310100487 A CN202310100487 A CN 202310100487A CN 116164141 A CN116164141 A CN 116164141A
- Authority
- CN
- China
- Prior art keywords
- pressure
- valve device
- load tap
- pressure relief
- changer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 claims abstract description 51
- 230000000670 limiting effect Effects 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0433—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with vibration preventing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K43/00—Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K2200/00—Details of valves
- F16K2200/20—Common housing having a single inlet, a single outlet and multiple valve members
- F16K2200/203—Common housing having a single inlet, a single outlet and multiple valve members in parallel
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Safety Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a pressure release valve device of an on-load tap-changer, which comprises an exhaust mechanism, a pressure release valve device and a pressure release valve device, wherein the exhaust mechanism comprises a communicating pipe, a baffle cover arranged on the communicating pipe, and a short cylinder arranged between the baffle cover and the communicating pipe; the gear shifting mechanism comprises a rotary table arranged on the side surface of the shielding cover, a plurality of pressure membrane discs circumferentially arranged on the rotary table, a supporting component arranged between the rotary table and the pressure membrane discs, and a driving component arranged on the side surface of the shielding cover and matched with the rotary table; and the pressure limiting mechanism is used for pressing the pressure membrane disc opposite to the communicating pipe. The pressure release valve device of the on-load tap-changer drives the turntable in a rotating way through the driving component, can rotate and renew the damaged pressure membrane disc just opposite to the communicating pipe, can realize quick replacement of the damaged pressure membrane disc on the premise of not disassembling and assembling the device, and can also keep good air tightness of the device.
Description
Technical Field
The invention relates to the technical field of on-load tap changers for high-capacity converter transformers, in particular to a pressure release valve device of an on-load tap changer.
Background
The on-load tapping switch of the converter transformer has the characteristics of large voltage regulating range, frequent action, extremely high current change rate during on-off and the like, and has very severe operation conditions. The pressure relief valve arrangement in an on-load tap changer is an important non-electrical protection, which is used with an oil flow relay or a pressure relay. When the oil chamber of the on-load tap-changer fails, the insulating oil is decomposed and gasified to generate a large amount of gas, the pressure in the oil chamber is rapidly increased, and when the pressure is increased to the opening pressure of the pressure release valve, the pressure release valve is rapidly opened within 2ms, so that the pressure in the oil chamber is rapidly reduced. When the pressure is reduced to the closing pressure value, the pressure release valve is reliably closed, so that the inside of the oil chamber is always kept at positive pressure, and external air, moisture and other impurities are effectively prevented from entering the oil chamber.
The pressure membrane disc in the pressure release valve device can be damaged after being subjected to the over-limited air flow pressure, the pressure membrane disc can be replaced by disassembling the pressure release valve device at present, and then the pressure release valve device is required to be reassembled, so that the pressure release valve device is troublesome to disassemble and assemble, and the problem of poor air tightness of the assembled device is easy to occur.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
In view of the problems that the device is troublesome to disassemble and assemble after the pressure membrane disc is damaged and the air tightness of the device is poor after the device is assembled in the current pressure release valve device, the pressure release valve device of the on-load tap-changer is provided.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides an on-load tap changer pressure relief valve device, includes, exhaust mechanism, including communicating pipe, set up in keep off the cover on communicating pipe, and set up in keep off the short section of thick bamboo between cover and the communicating pipe; the gear shifting mechanism comprises a rotary table arranged on the side surface of the shielding cover, a plurality of pressure membrane discs circumferentially arranged on the rotary table, a supporting component arranged between the rotary table and the pressure membrane discs, and a driving component arranged on the side surface of the shielding cover and matched with the rotary table; and the pressure limiting mechanism is used for compressing the pressure membrane disc opposite to the communicating pipe and comprises a sliding bearing arranged at the top of the shielding cover and a spring assembly arranged in the sliding bearing.
As a preferred embodiment of the pressure relief valve device for an on-load tap changer according to the invention, the pressure relief valve device comprises: the support assembly comprises an embedded ring and a support spring arranged on the embedded ring, and the support spring is connected with the pressure membrane disc.
As a preferred embodiment of the pressure relief valve device for an on-load tap changer according to the invention, the pressure relief valve device comprises: the driving assembly comprises an installation bottom shell arranged on the side face of the communicating pipe, a servo motor arranged in the installation bottom shell, a worm arranged on the output end of the servo motor, a rotating shaft arranged on the installation bottom shell, a worm wheel sleeved outside the rotating shaft, and the worm wheel is meshed with the worm.
As a preferred embodiment of the pressure relief valve device for an on-load tap changer according to the invention, the pressure relief valve device comprises: the spring assembly comprises a sliding rod arranged in the sliding bearing, a compression spring sleeved outside the sliding rod, and a limiting clamping jaw arranged at the lower end of the sliding rod, wherein the compression spring is propped against the limiting clamping jaw.
As a preferred embodiment of the pressure relief valve device for an on-load tap changer according to the invention, the pressure relief valve device comprises: the rotating top mechanism is arranged between the gear shifting mechanism and the pressure limiting mechanism and comprises a linkage rod arranged at the upper end of the sliding rod, a limited sliding piece arranged at the end part of the linkage rod, a righting piece arranged at the top of the blocking cover and matched with the linkage rod, an upper abutment arranged outside the rotating shaft and a lower abutment arranged on the rotating disc; and a limited-sliding narrow gap is formed between the upper abutment and the lower abutment, and the limited-sliding piece is movably arranged in the limited-sliding narrow gap.
As a preferred embodiment of the pressure relief valve device for an on-load tap changer according to the invention, the pressure relief valve device comprises: the limited slip piece comprises a limited short column and two limited slip shifting sheets which are arranged on the limited short column at intervals; and the two sliding limiting shifting sheets are inserted into the limiting short columns in a penetrating way.
As a preferred embodiment of the pressure relief valve device for an on-load tap changer according to the invention, the pressure relief valve device comprises: the centralizing piece comprises a gasket arranged on the baffle cover and a strip-shaped frame arranged on the gasket.
As a preferred embodiment of the pressure relief valve device for an on-load tap changer according to the invention, the pressure relief valve device comprises: the inside of the strip-shaped frame is provided with a damping rubber ring, and the outside of the damping rubber ring is fixedly connected with the inner wall of the strip-shaped frame through an epoxy resin adhesive.
As a preferred embodiment of the pressure relief valve device for an on-load tap changer according to the invention, the pressure relief valve device comprises: the side surface of the short cylinder is provided with a pressure relief opening, and the pressure relief opening is arranged on one side, far away from the driving assembly, of the short cylinder; the surface circumference of carousel seted up with pressure membrane dish assorted a plurality of circle mouths, just inlay the circle set up respectively in corresponding within the circle mouth.
As a preferred embodiment of the pressure relief valve device for an on-load tap changer according to the invention, the pressure relief valve device comprises: the shielding cover is provided with a rotating mounting narrow opening for the movable arrangement of the turntable, and the rotating mounting narrow opening is arranged back to the pressure relief opening.
The invention has the beneficial effects that: the rotary table is driven by the driving component to rotate, so that the damaged pressure membrane disc just opposite to the communicating pipe can be replaced by rotating, and the damaged pressure membrane disc can be replaced quickly on the premise of not disassembling and assembling the device, and the good air tightness of the device can be maintained.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is a schematic diagram showing the overall structure of the pressure relief valve device of the on-load tap-changer of the present invention.
Fig. 2 is a cross-sectional view of the on-load tap-changer pressure relief valve device according to the present invention.
Fig. 3 is a disassembled view of the pressure relief valve device of the on-load tap-changer according to the present invention.
Fig. 4 is a schematic diagram illustrating the cooperation of the pressure limiting mechanism, the driving assembly and the turning mechanism in the pressure release valve device of the on-load tap-changer according to the present invention.
Fig. 5 is a split view of a turntable, a pressure membrane disc and a support assembly in the pressure release valve device of the on-load tap-changer according to the present invention.
Fig. 6 is a split view of a combination of a linkage rod and a limited slip member and an upper abutment and a lower abutment in the pressure release valve device of an on-load tap-changer according to the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present invention in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Example 1
Referring to fig. 1 to 6, the embodiment provides an on-load tap-changer pressure release valve device, which comprises an exhaust mechanism 100 including a communicating pipe 101 for circulating pressure air flow in an oil chamber, a shield 102 provided on the communicating pipe 101, and a short cylinder 103 provided between the shield 102 and the communicating pipe 101, the short cylinder 103 being used for supporting the shield 102 connected to the communicating pipe 101; the gear shifting mechanism 200 comprises a rotary table 201 arranged on the side surface of the shielding cover 102, a plurality of pressure film discs 202 circumferentially arranged on the rotary table 201, a supporting component 203 arranged between the rotary table 201 and the pressure film discs 202, wherein the pressure air flow upwards pushes up the pressure film discs 202 through a communicating pipe 101 to release pressure, the number of the pressure film discs 202 is four, the four pressure film discs 202 are uniformly distributed circumferentially along the axial lead of the rotary table 201, the supporting component 203 is used for assembling the pressure film discs 202 in a round opening 201a in the rotary table 201, and a driving component 204 which is arranged on the side surface of the shielding cover 102 and matched with the rotary table 201 is used for driving the rotary table 201 to rotate, and the rotary table 201 can realize replacement of one pressure film disc 202 every ninety degrees of rotation, so that the control is reliable and convenient; and a pressure limiting mechanism 300 for pressing the pressure membrane disc 202 opposite to the communicating pipe 101, comprising a sliding bearing 301 arranged on the top of the shield 102, wherein the sliding bearing 301 ensures that the spring assembly 302 can axially reciprocate and translate, and the spring assembly 302 is arranged in the sliding bearing 301.
Specifically, the supporting component 203 comprises an insert ring 203a, the insert ring 203a is detachably mounted in the round opening 201a, after the damaged pressure membrane disc 202 is sent out of the baffle cover 102, the insert ring 203a connected with the insert ring can be manually detached, a new pressure membrane disc 202 connected with the supporting component 203 can be replaced, the new insert ring 203a is mounted in the round opening 201a, and a supporting spring 203b is arranged on the insert ring 203a, the supporting spring 203b is connected with the pressure membrane disc 202, the upper end of the supporting spring 203b is fixedly connected with the bottom side of the pressure membrane disc 202, and the lower end of the supporting spring 203b is fixedly connected with the upper end face of the insert ring 203 a; the driving assembly 204 comprises a mounting bottom shell 204a arranged on the side surface of the communicating pipe 101, a servo motor 204b arranged in the mounting bottom shell 204a, a worm 204c arranged on the output end of the servo motor 204b, a rotating shaft 204d arranged on the mounting bottom shell 204a, the rotating shaft 204d is rotatably arranged in the mounting bottom shell 204a through a ball bearing 204a-1 embedded at the bottom of the mounting bottom shell 204a, and a worm wheel 204e sleeved outside the rotating shaft 204d, the rotating shaft 204d is fixedly inserted in the middle of the turntable 201 and fixedly connected with the turntable 201, the mounting bottom shell 204a is fixedly arranged on the side surface of the communicating pipe 101, the worm wheel 204e is meshed and connected with the worm 204c, the servo motor 204b is started to drive the worm 204c to rotate, the rotating worm 204c can drive the worm wheel 204e to rotate, the rotating shaft 204d can be driven by the rotation of the worm wheel 204e, and the turntable 201 outside can be driven to rotate by the rotation of the rotating shaft 204 d.
Further, the spring assembly 302 includes a sliding rod 302a disposed in the sliding bearing 301, a compression spring 302b sleeved outside the sliding rod 302a, an upper end of the compression spring 302b is fixedly connected with a lower end surface of the sliding bearing 301, and a limiting jaw 302c disposed at a lower end of the sliding rod 302a, the compression spring 302b is abutted against the limiting jaw 302c, the limiting jaw 302c is used for avoiding a loose condition of a lower end of the compression spring 302b, the compression mechanism 300 can compress the pressure membrane disc 202 opposite to the communication pipe 101, so that the sliding rod 302a can axially reciprocate along a length direction of the sliding bearing 301, and the compression mechanism is used for compressing the newly replaced pressure membrane disc 202 and releasing the damaged pressure membrane disc 202; the side surface of the short cylinder 103 is provided with a pressure relief opening 103a, the pressure relief opening 103a is arranged on one side of the short cylinder 103 far away from the driving component 204, and pressure air flow can be finally discharged through the pressure relief opening 103a on the side surface of the short cylinder 103 to release the pressure of the pressure air flow; a plurality of circular openings 201a matched with the pressure membrane disc 202 are circumferentially formed in the surface of the turntable 201, and embedded rings 203a are respectively arranged in the corresponding circular openings 201a and are used for being matched with the supporting components 203 to assemble the pressure membrane disc 202 in the circular openings 201a in the turntable 201; the shield 102 is provided with a rotating and mounting narrow opening 102a for the turntable 201 to movably set, so that the turntable 201 can conveniently move in the shield 102, the blocking condition is avoided, and the rotating and mounting narrow opening 102a is arranged back to the pressure relief opening 103 a.
The operation process comprises the following steps: when the pressure membrane disc 202 opposite to the communicating pipe 101 is damaged by the over-limit pressure, the servo motor 204b can be started to drive the worm 204c to rotate, the worm 204c can drive the worm wheel 204e to rotate, the rotating shaft 204d in the worm 204c can be driven to rotate with the rotating disc 201 on the rotating shaft 204d, the servo motor 204b stops after the rotating disc 201 rotates ninety degrees, so that a new and intact pressure membrane disc 202 adjacent to the damaged pressure membrane disc 202 can be displaced to a position opposite to the communicating pipe 101 to continuously exert the sealing effect, the purpose of rotating and replacing the damaged pressure membrane disc 202 opposite to the communicating pipe 101 is achieved, and the quick replacement of the damaged pressure membrane disc 202 can be achieved on the premise that a device is not dismounted, and good air tightness of the device can be maintained.
Example 2
Referring to fig. 3, 4 and 6, this embodiment differs from the first embodiment in that: the pressure release valve device of the on-load tap changer further comprises a rotating top mechanism 400, which is arranged between the gear shifting mechanism 200 and the pressure limiting mechanism 300 and is used for combining rotation of the turntable 201 and lifting and lowering actions of the pressure limiting mechanism 300, and comprises a linkage rod 401 arranged at the upper end of a sliding rod 302a, a limited sliding piece 402 arranged at the end part of the linkage rod 401, a righting piece 403 arranged at the top of a blocking cover 102 and matched with the linkage rod 401, an upper abutting seat 404 arranged outside a rotating shaft 204d, and a lower abutting seat 405 arranged on the turntable 201, wherein the upper abutting seat 404 is fixedly connected with the rotating shaft 204d through a plurality of short rods 404a circumferentially arranged at the end part of the rotating shaft 204d, and the lower abutting seat 405 is fixedly connected with the turntable 201 through a plurality of reinforcing ribs 405a circumferentially arranged at the top of the turntable 201; a sliding-limiting slot 406 is formed between the upper abutment 404 and the lower abutment 405, in which there are concave-convex surfaces that are continuously matched, and each ninety degrees of rotation of the turntable 201, the sliding-limiting piece 402 in the sliding-limiting slot 406 can drive the linkage rod 401 to realize a lifting and lowering action, that is, a lifting and lowering action of the snap assembly 302, so as to release the damaged pressure membrane disc 202 first and then press the newly replaced pressure membrane disc 202, and the sliding-limiting piece 402 is movably disposed in the sliding-limiting slot 406.
Specifically, the sliding limiting piece 402 includes a limiting short column 402a, the limiting short column 402a penetrates through the sliding limiting narrow slit 406, the limiting short column 402a achieves the lifting purpose through the combination formed by the rotating upper abutment 404 and the lower abutment 405, and two sliding limiting pulling pieces 402b are arranged on the limiting short column 402a at intervals, the sliding limiting pulling pieces 402b are respectively arranged on the inner side and the outer side of the combination formed by the upper abutment 404 and the lower abutment 405, so that the limiting short column 402a is ensured not to fall from the combination formed by the upper abutment 404 and the lower abutment 405; and two sliding limiting pulling plates 402b are inserted into the limiting short column 402a in a penetrating way; the centralizing piece 403 comprises a gasket 403a arranged on the shielding cover 102, a strip-shaped frame 403b arranged on the gasket 403a, and a damping rubber ring 403c arranged in the strip-shaped frame 403b, wherein the damping rubber ring 403c is fixedly arranged in the strip-shaped frame 403b through an epoxy resin adhesive, the gasket 403a and the strip-shaped frame 403b are of an integral welding structure, the number of the strip-shaped frames 403b is at least two, and the gasket 403a is fixedly arranged at the top of the shielding cover 102 through screws; when the link 401 is lifted, the link 401 can slide in the buffer rubber ring 403c in the bar frame 403b in a limited manner, so that the stability of the link 401 during lifting is ensured, and the noise can be reduced.
The rest of the structure is the same as in embodiment 1.
The operation process comprises the following steps: when the servo motor 204b is started to drive the turntable 201 to rotate ninety degrees and then stop, wherein, when the turntable 201 rotates ninety degrees, the limited slide piece 402 in the limited slide narrow slit 406 can drive the linkage rod 401 to realize a lifting and withdrawing and descending action, namely a lifting and withdrawing and descending action of the spring assembly 302, so as to be used for firstly releasing the damaged pressure membrane disc 202 and then pressing the newly replaced pressure membrane disc 202, thereby realizing the releasing and re-pressing effects on different pressure membrane discs 202 opposite to the communicating pipe 101 and ensuring that the newly replaced pressure membrane disc 202 can continue to be normally put into the sealing operation of the air flow in the communicating pipe 101.
Example 3
This embodiment differs from the above embodiment in that it provides a pressure relief method employing an on-load tap-changer pressure relief valve device, comprising the steps of:
s1, when the pressure in an oil chamber of an on-load tap-changer is normal, the pressure limiting mechanism 300 can compress the pressure membrane disc 202 which is opposite to the communicating pipe 101;
s2, when the oil chamber of the on-load tap-changer fails, the insulating oil is decomposed and gasified to generate a large amount of gas, the pressure in the oil chamber is rapidly increased, after the pressure in the oil chamber of the on-load tap-changer is rapidly increased, the pressure air flow upwards passes through the communicating pipe 101 and then props up the pressure membrane disc 202 to release the pressure, and finally the pressure air flow is discharged through the pressure relief port 103a on the side surface of the short cylinder 103;
s3, after the pressure in the oil chamber of the on-load tap-changer exceeds the limit, the pressure membrane disc 202 is damaged by the rapid impact of the pressure air flow with excessive pressure, then the servo motor 204b can be started to drive the worm 204c to rotate, the worm 204c can be rotated to drive the worm wheel 204e to rotate, the worm wheel 204e can be rotated to drive the rotating shaft 204d to rotate with the rotating disc 201 and the combination formed by the upper abutment 404 and the lower abutment 405, and then the spring assembly 302 is lifted up, the damaged pressure membrane disc 202 loses the pressure limiting effect, and the damaged pressure membrane disc 202 is convenient to replace;
s4, the rotating disc 201 rotates to replace the pressure membrane disc 202, and after the replacement of the pressure membrane disc 202 is completed, the spring assembly 302 is pressed down again to reset through the combination of the rotating upper abutment 404 and the lower abutment 405 and the cooperation of the limiting piece 402 and the linkage rod 401, so that the new pressure membrane disc 202 is limited again, and the replaced pressure membrane disc 202 is put into operation again conveniently.
Further, when the link 401 is lifted, it can slide in the buffer rubber ring 403c in the bar frame 403b, ensuring the stability of the link 401 when lifted and reducing the noise.
The rest of the structure is the same as in embodiment 2.
It is important to note that the construction and arrangement of the present application as shown in a variety of different exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (10)
1. An on-load tap-changer pressure relief valve device, characterized by: comprising the steps of (a) a step of,
an exhaust mechanism (100) comprising a communication pipe (101), a shield (102) provided on the communication pipe (101), and a short cylinder (103) provided between the shield (102) and the communication pipe (101);
the gear shifting mechanism (200) comprises a rotary table (201) arranged on the side surface of the shielding cover (102), a plurality of pressure membrane discs (202) circumferentially arranged on the rotary table (201), a supporting component (203) arranged between the rotary table (201) and the pressure membrane discs (202), and a driving component (204) arranged on the side surface of the shielding cover (102) and matched with the rotary table (201); the method comprises the steps of,
the pressure limiting mechanism (300) is used for compressing the pressure membrane disc (202) which is opposite to the communicating pipe (101), and comprises a sliding bearing (301) arranged at the top of the shielding cover (102) and a spring assembly (302) arranged in the sliding bearing (301).
2. The on-load tap-changer pressure relief valve device of claim 1 wherein: the support assembly (203) comprises an embedded ring (203 a) and a support spring (203 b) arranged on the embedded ring (203 a), and the support spring (203 b) is connected with the pressure membrane disc (202).
3. The on-load tap-changer pressure relief valve device as claimed in claim 1 or 2, wherein: the driving assembly (204) comprises a mounting bottom shell (204 a) arranged on the side surface of the communicating pipe (101), a servo motor (204 b) arranged in the mounting bottom shell (204 a), a worm (204 c) arranged on the output end of the servo motor (204 b), a rotating shaft (204 d) arranged on the mounting bottom shell (204 a), and a worm wheel (204 e) sleeved outside the rotating shaft (204 d), wherein the worm wheel (204 e) is in meshed connection with the worm (204 c).
4. The on-load tap-changer pressure relief valve device of claim 3 wherein: the spring assembly (302) comprises a sliding rod (302 a) arranged in the sliding bearing (301), a compression spring (302 b) sleeved outside the sliding rod (302 a), and a limiting clamping jaw (302 c) arranged at the lower end of the sliding rod (302 a), wherein the compression spring (302 b) is propped against the limiting clamping jaw (302 c).
5. The on-load tap-changer pressure relief valve device of claim 4 wherein: also included is a method of manufacturing a semiconductor device,
the rotating top mechanism (400) is arranged between the gear shifting mechanism (200) and the pressure limiting mechanism (300) and comprises a linkage rod (401) arranged at the upper end of the sliding rod (302 a), a limited sliding piece (402) arranged at the end part of the linkage rod (401), a righting piece (403) arranged at the top of the shielding cover (102) and matched with the linkage rod (401), an upper abutting seat (404) arranged outside the rotating shaft (204 d) and a lower abutting seat (405) arranged on the rotating disc (201);
a limited-sliding narrow slit (406) is formed between the upper abutment (404) and the lower abutment (405), and the limited-sliding piece (402) is movably arranged in the limited-sliding narrow slit (406).
6. The on-load tap-changer pressure relief valve device of claim 5 wherein: the limited slip piece (402) comprises a limiting short column (402 a) and two limited slip shifting sheets (402 b) which are arranged on the limiting short column (402 a) at intervals;
and the two limited slip shifting sheets (402 b) are inserted into the limiting short columns (402 a) in a penetrating way.
7. The on-load tap-changer pressure relief valve device of claim 5 or 6, wherein: the righting member (403) comprises a gasket (403 a) arranged on the shield (102), and a strip-shaped frame (403 b) arranged on the gasket (403 a).
8. The on-load tap-changer pressure relief valve device of claim 7 wherein: the inside of the strip-shaped frame (403 b) is provided with a damping rubber ring (403 c), and the outside of the damping rubber ring (403 c) is fixedly connected with the inner wall of the strip-shaped frame (403 b) through an epoxy resin adhesive.
9. The on-load tap-changer pressure relief valve device of claim 2 wherein: the side surface of the short cylinder (103) is provided with a pressure relief opening (103 a), and the pressure relief opening (103 a) is arranged on one side, far away from the driving assembly (204), of the short cylinder (103);
a plurality of round openings (201 a) matched with the pressure membrane disc (202) are circumferentially formed in the surface of the rotary disc (201), and the embedded rings (203 a) are respectively arranged in the corresponding round openings (201 a).
10. The on-load tap-changer pressure relief valve device of claim 9 wherein: the shield (102) is provided with a rotating mounting narrow opening (102 a) for the movable arrangement of the rotary disc (201), and the rotating mounting narrow opening (102 a) is arranged back to the pressure relief opening (103 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310100487.XA CN116164141B (en) | 2023-02-12 | 2023-02-12 | Pressure release valve device of on-load tap-changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310100487.XA CN116164141B (en) | 2023-02-12 | 2023-02-12 | Pressure release valve device of on-load tap-changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116164141A true CN116164141A (en) | 2023-05-26 |
| CN116164141B CN116164141B (en) | 2024-04-23 |
Family
ID=86415910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310100487.XA Active CN116164141B (en) | 2023-02-12 | 2023-02-12 | Pressure release valve device of on-load tap-changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116164141B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191086A (en) * | 1921-06-28 | 1922-12-28 | Harry Clayton | Improvements in controlling valves for liquids and gases |
| US20090205721A1 (en) * | 2008-02-15 | 2009-08-20 | Siemens Magnet Technology Ltd. | Burst Disc Replacement Apparatus |
| US20110220829A1 (en) * | 2008-12-03 | 2011-09-15 | Maschinenfabrik Reinhausen Gmbh | Pressure relief valve |
| CN112259389A (en) * | 2020-10-14 | 2021-01-22 | 上海华明电力设备制造有限公司 | Operating mechanism of one-way on-load tap-changer |
| CN114719064A (en) * | 2022-04-12 | 2022-07-08 | 国家电网有限公司 | Oil-immersed transformer release valve capable of preventing oil oxidation |
| CN217683366U (en) * | 2022-06-14 | 2022-10-28 | 沈阳市第四变压器厂(有限公司) | Pressure relief valve structure of transformer |
-
2023
- 2023-02-12 CN CN202310100487.XA patent/CN116164141B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191086A (en) * | 1921-06-28 | 1922-12-28 | Harry Clayton | Improvements in controlling valves for liquids and gases |
| US20090205721A1 (en) * | 2008-02-15 | 2009-08-20 | Siemens Magnet Technology Ltd. | Burst Disc Replacement Apparatus |
| US20110220829A1 (en) * | 2008-12-03 | 2011-09-15 | Maschinenfabrik Reinhausen Gmbh | Pressure relief valve |
| CN112259389A (en) * | 2020-10-14 | 2021-01-22 | 上海华明电力设备制造有限公司 | Operating mechanism of one-way on-load tap-changer |
| CN114719064A (en) * | 2022-04-12 | 2022-07-08 | 国家电网有限公司 | Oil-immersed transformer release valve capable of preventing oil oxidation |
| CN217683366U (en) * | 2022-06-14 | 2022-10-28 | 沈阳市第四变压器厂(有限公司) | Pressure relief valve structure of transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116164141B (en) | 2024-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116164141B (en) | Pressure release valve device of on-load tap-changer | |
| CN111006046B (en) | Gear rack transmission assembly and gas self-closing valve | |
| CN206347125U (en) | The air seal valve separated for heavy caliber light-transmissive conduits | |
| CN115234655B (en) | Heat-resistant rubber ring and punch forming equipment thereof | |
| CN116504578B (en) | Vacuum on-load tap changer and voltage regulating method | |
| CN114719064A (en) | Oil-immersed transformer release valve capable of preventing oil oxidation | |
| CN219054540U (en) | Cutting device is used in rubber seal production | |
| CN214838829U (en) | Sealing structure of self-locking type upper-mounted axial flow valve | |
| CN215173831U (en) | Cam divider with lifting function | |
| CN217130485U (en) | Canned type valve switch with manual switching mechanism | |
| CN220094468U (en) | Copper sheathing detaching mechanism and stop device | |
| CN214075322U (en) | Quick-opening oil filter | |
| CN213684544U (en) | Novel vertical multistage centrifugal pump | |
| CN211135702U (en) | Cutting device is used in aluminum alloy door and window production | |
| CN110436399B (en) | Multifunctional can opener | |
| CN220819315U (en) | Test tool for static balance of chemical pump impeller | |
| CN219734336U (en) | Gas self-closing valve | |
| CN212429940U (en) | Gate valve convenient to use | |
| CN216298884U (en) | Five-axis numerical control polishing machine convenient for replacing grinding head and used for machining frame in mobile phone shell | |
| CN116603291B (en) | Household water purifier capable of guaranteeing water outlet efficiency | |
| CN219447864U (en) | Storage tank | |
| CN220488435U (en) | Valve adjusting self-locking knob device | |
| CN217239339U (en) | Guide sleeve of vacuum arc-extinguishing chamber | |
| KR100341081B1 (en) | Valve packing and manufacturing method the packing | |
| CN214534569U (en) | Multipoint worm drive gate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 200240 No. 800, Dongchuan Road, Shanghai, Minhang District Applicant after: SHANGHAI JIAO TONG University Applicant after: China Southern Power Grid Corporation Ultra High Voltage Transmission Company Electric Power Research Institute Applicant after: SHANGHAI HUAMING POWER EQUIPMENT Co.,Ltd. Address before: 200240 No. 800, Dongchuan Road, Shanghai, Minhang District Applicant before: SHANGHAI JIAO TONG University Applicant before: MAINTENANCE & TEST CENTRE, CSG EHV POWER TRANSMISSION Co. Applicant before: SHANGHAI HUAMING POWER EQUIPMENT Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |