CN215578098U - Explosion-proof type expander - Google Patents
Explosion-proof type expander Download PDFInfo
- Publication number
- CN215578098U CN215578098U CN202122129269.8U CN202122129269U CN215578098U CN 215578098 U CN215578098 U CN 215578098U CN 202122129269 U CN202122129269 U CN 202122129269U CN 215578098 U CN215578098 U CN 215578098U
- Authority
- CN
- China
- Prior art keywords
- oil filling
- expander
- valve
- cover plate
- glass cover
- 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
Images
Abstract
The utility model provides an explosion-proof expander, which is characterized in that: an oil filling port glass cover plate is arranged on the upper surface of the expander body, and a mounting hole is formed in the cover plate; the surface of the convex spigot of the oil filling valve is provided with external threads, the convex spigot of the oil filling valve is sequentially inserted into the mounting hole and the oil filling port, the convex spigot of the oil filling valve is in spigot fit with the upper mounting hole, a locking nut matched with the external threads of the convex spigot is screwed on the lower surface of the glass cover plate, and sealing devices are arranged among the oil filling valve, the glass cover plate and the cavity of the expander body to enable the cavity of the expander body to be in a sealed state; set up radial roof beam in the expander outer cover intracavity, radial roof beam is located the top of oiling valve, and the distance between oiling valve and the radial roof beam is defined as, and the messenger expander body lasts upwards inflation when abnormal conditions appear, and the oiling valve strikes on the radial roof beam, leads to the glass apron broken. The transformer is used for being mounted on a transformer.
Description
Technical Field
The utility model relates to an expander for a mutual inductor.
Background
The expander for the mutual inductor comprises an expander body, an expander outer cover and an oil injection valve, wherein an oil injection port is formed in the upper surface of the expander body, the lower part of the oil injection valve is installed on the expander body in a mode that a convex spigot is inserted into an oil injection hole (a concave spigot), the oil injection valve is welded and fixed again, and the oil injection valve is used for injecting oil into the cavity of the expander body through the oil injection port. The expander is an elastic component, is installed on the mutual inductor for compensating the volume change of the insulating oil in the mutual inductor, which is generated due to the temperature change, so that the insulating oil is isolated from the external environment, the insulating oil is prevented from being affected with damp, aged and deteriorated, and the safety of the product operation is ensured.
At present, a dangerous phenomenon exists when the mutual inductor operates: due to the possibility of faults or other abnormal conditions inside the instrument transformer, a large amount of gas is generated inside the instrument transformer, so that the internal pressure is increased continuously (even increased sharply). When the pressure exceeds the bearing capacity of the transformer, the transformer can explode, so that serious potential safety hazards are brought to the normal operation of a power system, and even the personal safety is threatened.
Disclosure of Invention
In order to eliminate the potential safety hazard, the utility model aims to provide an explosion-proof expander.
The purpose of the utility model is realized as follows: it includes expander dustcoat, oiling valve and expander body, has the oiling mouth at expander body upper surface, and the oiling valve lower part is protruding tang, characterized by: an oil filling port glass cover plate is arranged on the upper surface of the expander body, and an oil filling valve mounting hole is formed in the oil filling port glass cover plate; the surface of the convex spigot of the oil filling valve is provided with external threads, the convex spigot of the oil filling valve is sequentially inserted into the oil filling valve mounting hole and the oil filling port, the convex spigot of the oil filling valve is in spigot fit with the mounting hole, a locking nut in threaded fit with the male spigot is screwed on the lower surface of the glass cover plate, and sealing devices are arranged among the oil filling valve, the glass cover plate and the expander body cavity to enable the expander body cavity to be in a sealed state; set up radial roof beam in the expander outer cover intracavity, radial roof beam is located the top of oiling valve, and the distance between oiling valve and the radial roof beam is defined as, and the messenger expander body lasts upwards inflation when abnormal conditions appear, and the oiling valve strikes on the radial roof beam, leads to the glass apron broken. The glass cover plate is broken, so that abnormal high pressure in the expander body is relieved through the pressure relief hole.
Compared with the prior art, the utility model has the following positive effects: when the expander body continuously expands upwards due to abnormal boosting inside the mutual inductor, the oil injection valve is impacted to break the glass cover plate, so that the internal pressure of the mutual inductor is released, the explosion of the mutual inductor is prevented, and potential safety hazards are eliminated.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic of the present invention.
FIG. 2 is an enlarged view of the portion of the fill valve spigot of FIG. 1 inserted into the fill valve mounting hole and the fill port in that order.
Fig. 3 is a top view of fig. 2.
Detailed Description
The expansion device comprises an expander outer cover 5, an oil injection valve 4 and an expander body 1, wherein an oil injection port 8 is formed in the upper surface of the expander body, the lower part of the oil injection valve is a convex spigot 41, and a circular oil injection port glass cover plate 2 is mounted on the upper surface of the expander body in a manner that the glass cover plate 2 is pressed on the upper part of the expander body 1 by a pressing ring 6 and is fastened by a circle of bolts 9; an oil filling valve mounting hole (occupied by a convex spigot 41 in the figure) is formed in the oil filling port glass cover plate, the centers of the upper mounting hole, the lower mounting hole and the oil filling port 8 are positioned on the same straight line, and the diameter of the oil filling port 8 is between the diameter of the circular glass cover plate 2 and the diameter of the mounting hole, so that the oil filling valve 4 and a locking nut 7 thereof can be conveniently mounted; the surface of the convex spigot of the oil filling valve is provided with external threads, the convex spigot of the oil filling valve is sequentially inserted into the oil filling valve mounting hole and the oil filling port, the convex spigot 41 of the oil filling valve is in spigot fit with the oil filling valve mounting hole, a locking nut 7 in spigot-and-socket external thread fit is screwed on the lower surface of the glass cover plate, and sealing devices are arranged among the oil filling valve, the glass cover plate and the expander body cavity to enable the expander body cavity to be in a sealed state; set up radial roof beam 3 in the expander housing intracavity, radial roof beam is located the top of oiling valve, and the distance between oiling valve and the radial roof beam is defined as, and when the abnormal conditions appeared making the expander body continue upwards to expand, the oiling valve impacted on the radial roof beam, resulted in the glass apron to break. The glass cover plate is broken, so that abnormal high pressure in the expander body is relieved through the pressure relief hole.
Claims (2)
1. The utility model provides an explosion-proof formula expander, it includes expander dustcoat, oiling valve and expander body, has the oiling mouth at expander body upper surface, and oiling valve lower part is protruding tang, characterized by: an oil filling port glass cover plate is arranged on the upper surface of the expander body, and an oil filling valve mounting hole is formed in the oil filling port glass cover plate; the surface of the convex spigot of the oil filling valve is provided with external threads, the convex spigot of the oil filling valve is sequentially inserted into the oil filling valve mounting hole and the oil filling port, the convex spigot of the oil filling valve is in spigot fit with the mounting hole, a locking nut in threaded fit with the male spigot is screwed on the lower surface of the glass cover plate, and sealing devices are arranged among the oil filling valve, the glass cover plate and the expander body cavity to enable the expander body cavity to be in a sealed state; set up radial roof beam in the expander outer cover intracavity, radial roof beam is located the top of oiling valve, and the distance between oiling valve and the radial roof beam is defined as, and the messenger expander body lasts upwards inflation when abnormal conditions appear, and the oiling valve strikes on the radial roof beam, leads to the glass apron broken.
2. An explosion proof expander as defined in claim 1, wherein: the mode of installing the circular oil filling opening glass cover plate on the upper surface of the expander body is that the glass cover plate is pressed on the upper part of the expander body by a pressing ring and is fastened by a circle of bolts; the circle centers of the upper and lower mounting holes and the oil filling port are on the same straight line, and the diameter of the oil filling port is between the diameter of the circular glass cover plate and the diameter of the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122129269.8U CN215578098U (en) | 2021-09-06 | 2021-09-06 | Explosion-proof type expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122129269.8U CN215578098U (en) | 2021-09-06 | 2021-09-06 | Explosion-proof type expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215578098U true CN215578098U (en) | 2022-01-18 |
Family
ID=79847345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122129269.8U Active CN215578098U (en) | 2021-09-06 | 2021-09-06 | Explosion-proof type expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215578098U (en) |
-
2021
- 2021-09-06 CN CN202122129269.8U patent/CN215578098U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201004366Y (en) | Explosion resisting internal oil external hung oil container | |
| CN107221412B (en) | Metal corrugated pressure-releasing explosion-proof expander | |
| CN215578098U (en) | Explosion-proof type expander | |
| CN104533879A (en) | Pressure stabilization compensation device and energy accumulator detection system with same | |
| CN212063255U (en) | Sulfur hexafluoride gas-filled cabinet | |
| US5107900A (en) | Expansion-type fuse safety device for accumulator | |
| CN217784316U (en) | Pressure release device for oil-immersed power equipment | |
| CN203589112U (en) | Explosion-proof valve device of battery cell | |
| CN210242911U (en) | Explosion-proof type pressure liquid level changer | |
| CN2910529Y (en) | Structure of water channel gag for cooling mould | |
| CN201516251U (en) | Decompression assembly for fire suppression bottles and fire suppression bottle | |
| CN211527645U (en) | Temperature transmitter sleeve for tapping under pressure and mounting device thereof | |
| CN204422315U (en) | A kind of additional locking devices for valve pressure test | |
| CN210110537U (en) | Explosion-proof capacitor | |
| CN106505166B (en) | A kind of valve gear, battery pack housing and electric car | |
| CN207777144U (en) | A kind of piston compressor safety guard | |
| CN111192990A (en) | Safety valve structure for lithium battery | |
| CN218770881U (en) | GIS gassing specialized tool of totally closed combined electrical apparatus of gas insulation | |
| CN210092199U (en) | Device for avoiding leakage caused by underground battery explosion | |
| CN219714724U (en) | Test tool for testing hydraulic performance of IBC ton barrel | |
| CN220435532U (en) | High-pressure temperature-sensing pressure release valve | |
| CN219954340U (en) | Microwave digestion tank with pressure release valve | |
| CN201893400U (en) | Split anti-explosion valve of battery | |
| CN218822837U (en) | High-temperature high-pressure tungsten-rhenium thermocouple | |
| CN212462432U (en) | Explosion-proof type instrument electric control cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220902 Address after: No. 8, 21st Road, Development, Phase II, Private Industrial City, Shenyang Economic and Technological Development Zone, Shenyang City, Liaoning Province, 110000 Patentee after: Shenyang Kangjian Electric Appliance Co.,Ltd. Address before: 110023 2-2-1, No. 33-1, nanshizhong Road, Tiexi District, Shenyang City, Liaoning Province Patentee before: Dai Dan |
|
| TR01 | Transfer of patent right |