CN221079892U - Single bellows type quick-acting oil pressure relay actuating mechanism - Google Patents
Single bellows type quick-acting oil pressure relay actuating mechanism Download PDFInfo
- Publication number
- CN221079892U CN221079892U CN202322818217.0U CN202322818217U CN221079892U CN 221079892 U CN221079892 U CN 221079892U CN 202322818217 U CN202322818217 U CN 202322818217U CN 221079892 U CN221079892 U CN 221079892U
- Authority
- CN
- China
- Prior art keywords
- base
- hole
- membrane
- cavity
- movable contact
- 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.)
- Active
Links
- 238000003825 pressing Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims description 29
- 229920000642 polymer Polymers 0.000 claims description 19
- 230000007547 defect Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Transformer Cooling (AREA)
Abstract
The utility model provides a single bellows type quick-acting oil pressure relay action mechanism using a movable contact device to replace a small bellows, which is characterized in that: the movable contact device is arranged between the micro switch and the pressing plate and comprises a base and a cover thereof, wherein the base and the cover enclose a film cavity, a film is arranged on a film seat of the film cavity, a movable contact serving as a transmission element of the micro switch is fixed at the center of the film, a movable contact through hole on the cover of the base is provided with a screw hole leading to the film cavity, and a bolt is screwed into the screw hole from the cover of the base and is pressed onto the film; the base leg is installed the base on the clamp plate with the mode of inserting in the clamp plate through-hole, sets up the base through-hole at the base leg, and diaphragm seat chamber, base through-hole, big bellows lumen communicate in proper order.
Description
Technical Field
The utility model relates to a pressure protection device of a non-electric quantity protection component of a transformer, in particular to a quick-acting oil pressure relay and an action mechanism thereof.
Background
The quick-acting oil pressure relay is one of pressure protection devices of a non-electric quantity protection assembly of a transformer, is a device for protecting the rising speed of the pressure in the transformer, and comprises an action mechanism, wherein the action mechanism comprises a micro switch, a small corrugated pipe, a pressing plate and a large corrugated pipe from top to bottom, the pressing plate is simultaneously used as a lower end plate of the small corrugated pipe and an upper end plate of the large corrugated pipe, and a through hole is arranged in the center of the pressing plate to communicate the large corrugated pipe cavity with the small corrugated pipe cavity; the pressing plate is also provided with a needle type balancer for balancing the pressure of the large corrugated pipe cavity. When the pressure in the transformer continuously rises, the large corrugated pipe of the quick-acting oil pressure relay is compressed, compressed gas is generated in the pipe cavity of the large corrugated pipe and enters the pipe cavity of the small corrugated pipe through the through hole, so that the upper end cover of the small corrugated pipe is pushed to move upwards (the small corrugated pipe is pulled upwards), and the micro switch is triggered. Because the quick-acting oil pressure relay actuating mechanism uses a large corrugated pipe and a small corrugated pipe, the upper end cover of the small corrugated pipe is used as an external mechanical force transmission element of the micro switch, and the quick-acting oil pressure relay is called as a double-corrugated pipe type quick-acting oil pressure relay actuating mechanism. Years of application find that the dual bellows type (quick oil pressure relay) actuating mechanism has the following defects: firstly, a small corrugated pipe is very small in specification and needs to be thin-walled (about 0.1 mm), the small corrugated pipe is very difficult to manufacture, deformation and dead wrinkling are easy to occur after the small corrugated pipe stretches back and forth, and the reliability of a quick-acting oil pressure relay is affected; secondly, the needle of the needle type balancer is not only easy to block (the balancer is invalid), but also has the defects of easy bending, easy injury and the like; finally, the adjustment is troublesome, and particularly when the rated value is set, the upper and lower positions of the fixed switch are required to be adjusted to adjust the rated value, and the adjustment time is long.
Disclosure of utility model
The utility model aims to provide a single-bellows type quick-acting oil pressure relay actuating mechanism, which is characterized in that a movable contact device is used for replacing a small bellows, so that the problem of low reliability of the quick-acting oil pressure relay is solved.
The utility model is realized by the following steps: including micro-gap switch, clamp plate and big bellows, there are equalizer and clamp plate through-hole on the clamp plate, characterized by: a movable contact device is arranged between the micro switch and the pressing plate, and the micro switch, the movable contact device, the pressing plate and the large corrugated pipe are arranged from top to bottom;
The movable contact device comprises a base and a base cover, wherein the base and the cover enclose a membrane cavity, a vertical pipe type membrane seat is arranged in the membrane cavity, a high polymer rubber membrane is placed on the membrane seat, a membrane seat cavity is formed between the high polymer rubber membrane and the membrane seat, and a movable contact serving as a micro-switch transmission element is fixed in the center of the high polymer rubber membrane and positioned above the membrane seat cavity; a moving contact through hole is formed in the base cover, the moving contact is arranged in the moving contact through hole, a screw hole leading to the membrane cavity is formed in the base cover, and a bolt matched with the screw hole is screwed into the screw hole from the base cover, so that the bolt is pressed to the eccentric position of the high polymer rubber membrane; the lower part of base is base leg (single leg), and the base leg is installed the base on the clamp plate with the mode of inserting in the clamp plate through-hole, and base leg and clamp plate through-hole are tang cooperation, set up the base through-hole at the base leg, and diaphragm seat chamber, base through-hole, big bellows lumen communicate in proper order.
When the pressure in the transformer continuously rises, the large bellows of the quick-acting oil pressure relay is compressed, compressed gas generated by the pipe cavity of the large bellows sequentially passes through the pressing plate through hole and the base through hole to enter the diaphragm seat cavity, so that the high polymer rubber diaphragm and the moving contact above the diaphragm seat cavity are pushed to move upwards, and the micro switch above is triggered.
Compared with the prior art, the utility model has the expected beneficial effects that the movable contact device is used for replacing the small corrugated pipe to form the single-corrugated pipe type quick-acting oil pressure relay actuating mechanism, so that the defects of low reliability and difficult manufacturing caused by the small corrugated pipe are overcome.
The utility model provides a quick-acting oil pressure relay, which comprises a corrugated pipe, a spring, a pressing plate, a membrane group lower seat, a high polymer rubber membrane, a membrane group upper seat, a micro switch, a moving contact, an adjusting device and a columnar balancer. The pressing plate fixes the actuating mechanism in the housing of the quick-acting hydraulic relay. When the rising speed of the pressure in the transformer continuously increases, the pressure acts on the outside of the corrugated pipe to drive the corrugated pipe to move upwards to compress the air in the corrugated pipe, the pressure acts on the high polymer rubber film arranged between the upper seat of the film group and the lower seat of the film group, and the high polymer rubber film can drive the movable contact to touch the micro switch upwards. The adjusting device is arranged on the upper seat of the membrane group, the position of the high polymer rubber membrane can be adjusted, the effect of controlling the air pressure is achieved, when the action process is finished, the pressure is reduced, and the spring can reset the corrugated pipe to the original position. The column balancer balances the internal and external pressure or the static pressure generated by the transformer oil storage cabinet in the process of micro pressure increase to prevent false operation.
Drawings
The utility model is further described below with reference to the drawings.
Fig. 1 is a schematic diagram of the present utility model.
Detailed Description
The embodiment uses a movable contact device to replace a small corrugated pipe, specifically, a movable contact device B is arranged between a micro switch A and a pressing plate C, the micro switch A, the movable contact device B, the pressing plate C and the large corrugated pipe D are arranged from top to bottom, and the pressing plate comprises a pressing plate through hole;
The movable contact device B comprises a base 10 and a base cover 9, wherein the base and the cover thereof enclose a diaphragm cavity 8, a vertical pipe type diaphragm seat 11 is arranged in the diaphragm cavity, a high polymer rubber diaphragm 4 is placed on the diaphragm seat 11, a diaphragm seat cavity 3 is formed between the high polymer rubber diaphragm and the diaphragm seat, and a movable contact 5 serving as a micro switch transmission element is fixed in the center of the high polymer rubber diaphragm 4 and is positioned above the diaphragm seat cavity 3; a moving contact through hole 7 is formed in the base cover, a moving contact 5 is arranged in the moving contact through hole 7, a screw hole leading to the diaphragm cavity is formed in the base cover, a bolt 6 matched with the screw hole is screwed into the screw hole from the base cover, so that the bolt is pressed to the eccentric position of the high polymer rubber diaphragm 4, the position of the high polymer rubber diaphragm is adjusted, and the pressure is controlled; the lower part of the base 10 is provided with base legs 2, the base legs 2 are used for mounting the base 10 on the pressing plate in a mode of being inserted into the pressing plate through holes, the base legs are matched with the pressing plate through holes in a spigot 13 mode, the base legs are provided with base through holes 12, and the diaphragm seat cavity 3, the base through holes 12 and the large corrugated pipe D pipe cavity are sequentially communicated.
When the pressure in the transformer continuously rises, the large bellows of the quick-acting oil pressure relay is compressed, compressed gas generated by the pipe cavity of the large bellows sequentially passes through the pressing plate through hole and the base through hole to enter the diaphragm seat cavity, so that the high polymer rubber diaphragm and the moving contact above the diaphragm seat cavity are pushed to move upwards, and the micro switch above is triggered.
The balancer on the pressing plate, the present embodiment uses the screw balancer 1 to replace the existing needle balancer, specifically, a screw hole and a screw thereof are provided on the pressing plate, and the screw is screwed into the screw hole in a non-total screwing manner such as half screwing, so that a gap is generated between the screw and the hole thereof. The screw balancer balances the pressure of the large corrugated pipe cavity by utilizing the gap between the screw and the hole. The gap can be adjusted by adjusting the screwing degree of the screw, so that the balance pressure is adjusted.
Claims (2)
1. The utility model provides a single ripple tubular quick-action oil pressure relay actuating mechanism, includes micro-gap switch, clamp plate and big bellows, has balancer and clamp plate through-hole on the clamp plate, characterized by: a movable contact device is arranged between the micro switch and the pressing plate, and the micro switch, the movable contact device, the pressing plate and the large corrugated pipe are arranged from top to bottom;
the movable contact device comprises a base and a base cover, wherein the base and the cover enclose a membrane cavity, a vertical pipe type membrane seat is arranged in the membrane cavity, a high polymer rubber membrane is placed on the membrane seat, a membrane seat cavity is formed between the high polymer rubber membrane and the membrane seat, and a movable contact serving as a micro-switch transmission element is fixed in the center of the high polymer rubber membrane and positioned above the membrane seat cavity; a moving contact through hole is formed in the base cover, the moving contact is arranged in the moving contact through hole, a screw hole leading to the membrane cavity is formed in the base cover, and a bolt matched with the screw hole is screwed into the screw hole from the base cover, so that the bolt is pressed to the eccentric position of the high polymer rubber membrane; the lower part of base is the base leg, and the base leg is installed the base on the clamp plate with the mode of inserting in the clamp plate through-hole, and base leg and clamp plate through-hole are tang cooperation, set up the base through-hole at the base leg, and diaphragm seat chamber, base through-hole, big bellows lumen communicate in proper order.
2. The single bellows type quick oil pressure relay action mechanism according to claim 1, wherein: the balancer is a screw type balancer, and specifically, a screw hole and a screw thereof are arranged on the pressing plate, and the screw is screwed into the screw hole in a non-total screwing mode, so that a gap is generated between the screw and the screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322818217.0U CN221079892U (en) | 2023-10-20 | 2023-10-20 | Single bellows type quick-acting oil pressure relay actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322818217.0U CN221079892U (en) | 2023-10-20 | 2023-10-20 | Single bellows type quick-acting oil pressure relay actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221079892U true CN221079892U (en) | 2024-06-04 |
Family
ID=91272852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322818217.0U Active CN221079892U (en) | 2023-10-20 | 2023-10-20 | Single bellows type quick-acting oil pressure relay actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221079892U (en) |
-
2023
- 2023-10-20 CN CN202322818217.0U patent/CN221079892U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101001194B1 (en) | Normal-open metal diaphragm control valve driven by piezoelectric element | |
| CN201155999Y (en) | Automatic micro-pressure generator | |
| CN221079892U (en) | Single bellows type quick-acting oil pressure relay actuating mechanism | |
| JP2003120832A (en) | Piezoelectric element driving-type metallic diaphragm- type control valve | |
| CN2849944Y (en) | Liquid expansion type temp controller | |
| CN113611571B (en) | Single-contact water pressure switch | |
| CN204230152U (en) | A kind of dish-shaped shell fragment auto-pressure switch | |
| CN219549705U (en) | Balance valve of vulcanizing machine | |
| CN114709114B (en) | Spring operating mechanism and speed characteristic adjusting method before assembly thereof | |
| CN211061906U (en) | Micro-differential pressure controller | |
| CN203629796U (en) | Waveform spring precompression tester | |
| CN220454741U (en) | Force application device for testing magnetic fluid | |
| US2480495A (en) | Pressure actuated switch | |
| CN220398839U (en) | Quick measuring device of controllable time delay nitrogen spring pressure and resilience volume | |
| CN220856449U (en) | Pressure spring structure for relay | |
| CN220341112U (en) | High-precision compact water level switch | |
| CN219370895U (en) | Liquid expansion type temperature controller | |
| CN208026463U (en) | A kind of fatigue tester of nitrogen gas spring | |
| KR102520153B1 (en) | Mechanical differential pressure adjustable pressure switch | |
| CN216288175U (en) | Monostable switch, double-regulation switch device and double-regulation type pressure automatic switch | |
| CN212886087U (en) | Regulation type motorcycle bearing pressure equipment structure | |
| CN115547742B (en) | Temperature switch | |
| CN219370897U (en) | Liquid expansion type temperature controller | |
| CN2721927Y (en) | Pressure adjuster of electric pump | |
| CN217214577U (en) | Double-regulating switch device and double-regulating pressure automatic switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |