CN211208324U - Explosion-proof device of electric power automation relay - Google Patents
Explosion-proof device of electric power automation relay Download PDFInfo
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- CN211208324U CN211208324U CN201821827591.XU CN201821827591U CN211208324U CN 211208324 U CN211208324 U CN 211208324U CN 201821827591 U CN201821827591 U CN 201821827591U CN 211208324 U CN211208324 U CN 211208324U
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- explosion
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- relay
- power automation
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Abstract
The utility model relates to an electric power automation relay explosion-proof equipment belongs to electric power automation equipment technical field. The explosion-proof device comprises a shell, explosion-proof sheets and a protective cover, wherein the shell is cylindrical, and two groups of explosion-proof sheets are arranged in the cylinder; the explosion-proof piece is circular, the edge of the explosion-proof piece is fixed on the shell, the center of the upper surface of the explosion-proof piece body is inwards sunken to form a concave cavity structure, and explosion groove lines are preset on the explosion-proof piece concave cavity body in a radiation manner at equal intervals by taking a central point as a circle center. Each group of explosion-proof sheets uses the central point as the center of a circle to radiate a preset burst slot line in five equal parts, so that the explosion-proof capacity of the device is improved. The explosion piece can be prevented from being directly irradiated by light, corroded by the environment and entered by foreign matters, and when the explosion piece is exploded and released, the protection device can guide the released medium to a safe area, so that the impact damage of the released medium to personnel, public facilities and other power equipment is avoided. The potential safety hazards such as explosion and the like are avoided, and the structure is simple and the safety performance is good.
Description
Technical Field
The utility model belongs to the technical field of electric power automation equipment, concretely relates to electric power automation relay explosion-proof equipment.
Background
With the progress and development of science and technology, the social development gradually enters an intelligent living state, and more intelligent devices are applied to life and production. Various intelligent devices need power support, so that the demand and safety requirements on power devices are higher and higher. The application of relay protection and automation devices in power systems is a basic measure for ensuring power supply safety.
If faults occur in the operation process of the power system, such as short-circuit faults, overload operation faults and the like, the reliability of the relay protection device needs to be ensured. The fault detection device can send out signals aiming at faults in time and remove fault points. With the gradual improvement of the power system, the probability of failure of the power system in operation is relatively low, and the relay protection device does not work frequently, but the relay protection device also fails in operation, including a failure and a malfunction. The action rejection fault mainly means that when a power system has a fault, the relay protection device cannot timely remove the fault and send a signal, so that the power system is broken down. The malfunction fault mainly means that the relay protection device still generates malfunction in the process of safe operation of the power system under the influence of various factors inside and outside, and then certain economic loss is caused. The application of the relay can ensure the reliability of the relay protection and automation device under special conditions, and promote the safe and stable operation of the power system.
Because of lack of reliable explosion-proof measures for explosive gases, the common relay in the prior art can generate electric sparks due to frequent closing and opening actions during operation, and if explosive gases or combustible dust exist around the relay, potential safety hazards exist, and further external dangers are easily caused. Therefore, the conventional relay cannot be used in a dangerous place where explosive gas exists because it does not have an explosion-proof function. In the explosion-proof relay in the prior art, a sealed shell is mostly adopted, or the frequency and the size of electric sparks are reduced by adjusting electric gaps, creepage distances and the like. For example, chinese patent 201520992482.3 discloses an explosion-proof relay, the electrical gap between two coil pins is greater than 2.0mm, the creepage distance is greater than 2.5mm, and the conductive part between each coil pin and the contact pin and the outside is an explosion-proof sealing structure encapsulated by epoxy resin, so as to effectively reduce the frequency and size of electric spark generation, and realize automatic control in explosive gas and dust dangerous places. This kind of seal structure design can play explosion-proof effect to a certain extent, causes the puncture more easily when the too big spark of creepage distance or circuit load arouses the spark, leads to the explosion of dust or flammable explosive gas, has certain risk.
Disclosure of Invention
In order to overcome the technical defect that the explosion-proof effect is not good that prior art's automation relay exists, the utility model provides an electric power automation relay explosion-proof equipment of safe handling in the hazardous environment of inflammable and explosive gas and dust.
The utility model adopts the technical proposal that: an explosion-proof device of an electric power automation relay comprises a shell, an explosion-proof sheet and a protective cover, wherein the shell is cylindrical, and two groups of explosion-proof sheets are arranged in a cylinder; the explosion-proof piece is circular, the edge of the explosion-proof piece is fixed on the shell, the center of the upper surface of the explosion-proof piece body is inwards sunken to form a concave cavity structure, and explosion groove lines are preset on the explosion-proof piece concave cavity body in a radiation manner at equal intervals by taking a central point as a circle center. The edge of the protective cover is provided with a buckle which is buckled on the shell. Under the protection of the protective cover, the protective cover is in a closed state under the normal working condition and cannot be influenced by any external factors, but when the container overpressure explosion-proof piece explodes, the protective cover is rapidly opened or falls off due to pressure.
Preferably, the two groups of explosion-proof sheet concave cavity structures are arranged in a reverse direction.
Preferably, the slot bursting line radiates at five equal parts or eight equal parts by taking the central point as a center.
Preferably, the edge of the cavity structure of the explosion-proof sheet is provided with a pressure relief vent hole.
Preferably, the four pressure relief vent holes are symmetrically arranged.
Preferably, an annular sealing ring is arranged between the protective cover and the shell.
Preferably, the housing is provided with bolt holes, and the housing is fixed on the relay through bolts.
Preferably, the thickness of the explosion-proof piece is gradually reduced from the edge to the inner part, and the minimum thickness at the center is 0.8 mm.
The utility model discloses an electric power automation relay explosion-proof equipment when the relay takes place the malfunction, when pressure release lateral pressure is less than the rated pressure-bearing of explosion-proof piece design, through the effect of pressure release air vent, the internal and external pressure of balancing unit. When the pressure of the pressure relief side is smaller than the designed rated pressure bearing of the explosion-proof sheet, the explosion-proof sheet cracks the groove line, redundant pressure is discharged, and the protective cover is rapidly opened or falls off due to the pressure.
The utility model has the advantages that:
1. the utility model discloses an explosion-proof equipment for electric power automation relay is equipped with two sets of explosion-proof pieces in the reverse direction, and the groove line that bursts is predetermine to every group explosion-proof piece use the central point as centre of a circle five equal divisions radiation, has increased the explosion-proof ability of device.
2. The utility model discloses an explosion-proof equipment for electric power automation relay can prevent that the rupture disk from suffering light and penetrating directly, the environmental corrosion and the foreign matter gets into, and when the rupture disk blasting was released moreover, protector can avoid the medium of releasing to personnel, communal facility and other power equipment's impact damage with release medium direction safe region.
3. The utility model discloses an explosion-proof equipment for electric power automation relay, so the explosion-proof piece that adopts this structure breaks the stress that needs less, appears under the abnormal conditions when the relay device, can realize breaking disappointing, is unlikely to potential safety hazards such as explosion, and its simple structure, security performance are better.
Drawings
Fig. 1 is a schematic structural view of an explosion-proof device for a power automation relay according to embodiment 1.
Fig. 2 is a schematic structural view of the explosion-proof sheet according to embodiment 1 of the present invention.
Fig. 3 is a schematic structural view of an explosion-proof device for an electric power automatic relay according to embodiment 2.
Fig. 4 is a schematic structural view of a type rupture disk according to embodiment 2 of the present invention.
Fig. 5 is a partial enlarged view of the protective cover of the present invention.
In the figure, 1-shell, 2-explosion-proof sheet, 3-protective cover, 4-bolt hole, 5-pressure relief vent hole, 6-buckle and 7-sealing ring.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art may better understand the invention, but the invention is not limited thereto. In the following embodiments, directional terms such as "up, down, left, and right" are only directions referring to the drawings, and therefore, the directional terms are used for illustration and are not used to limit the present invention.
Example 1:
the utility model provides an electric power automation relay explosion-proof equipment, includes casing 1, still includes explosion-proof piece 2 and protection casing 3, casing 1 is cylindric, is equipped with two sets of explosion-proof pieces 2 in the section of thick bamboo, and two sets of explosion-proof piece cavity structures are reverse to be set up. The casing 1 is provided with bolt holes 4 which are fixed on the relay through bolts. The explosion-proof sheet 2 is circular, the edge of the explosion-proof sheet is fixed on the shell 1, the center of the upper surface of the explosion-proof sheet body is inwards sunken to form a concave cavity structure, and an explosion groove line is preset on the explosion-proof sheet concave cavity body in a five-equal radiation mode by taking a central point as a circle center. The edge of the cavity structure of the explosion-proof sheet is provided with four pressure relief vent holes 5, and the four pressure relief vent holes 5 are symmetrically arranged. The edge of the protective cover 3 is provided with a buckle 6 which is buckled on the shell, and an annular sealing ring 7 is arranged between the protective cover 3 and the shell 1. The protective cover is in a closed state under normal working conditions and cannot be influenced by any external factors, but when the container overpressure explosion-proof piece explodes, the protective cover is rapidly opened or falls off due to pressure.
Example 2:
the utility model provides an electric power automation relay explosion-proof equipment, includes casing 1, still includes explosion-proof piece 2 and protection casing 3, casing 1 is cylindric, is equipped with two sets of explosion-proof pieces 2 in the section of thick bamboo, and two sets of explosion-proof piece cavity structures syntropy set up. The casing 1 is provided with bolt holes 4 which are fixed on the relay through bolts. The explosion-proof sheet 2 is circular, the edge of the explosion-proof sheet is fixed on the shell 1, the center of the upper surface of the explosion-proof sheet body is inwards sunken to form a concave cavity structure, and an explosion groove line is preset on the explosion-proof sheet concave cavity body in an eight-equal radiation mode by taking a central point as a circle center. The edge of the cavity structure of the explosion-proof sheet is provided with four pressure relief vent holes 5, and the four pressure relief vent holes 5 are symmetrically arranged. The edge of the protective cover 3 is provided with a buckle 6 which is buckled on the shell, and an annular sealing ring 7 is arranged between the protective cover 3 and the shell 1. The protective cover is in a closed state under normal working conditions and cannot be influenced by any external factors, but when the container overpressure explosion-proof piece explodes, the protective cover is rapidly opened or falls off due to pressure.
The utility model discloses an electric power automation relay explosion-proof equipment when the relay takes place the malfunction, when pressure release lateral pressure is less than the rated pressure-bearing of explosion-proof piece design, through the effect of pressure release air vent, the internal and external pressure of balancing unit. When the pressure of the pressure relief side is smaller than the designed rated pressure bearing of the explosion-proof sheet, the explosion-proof sheet cracks the groove line, redundant pressure is discharged, and the protective cover is rapidly opened or falls off due to the pressure.
The preferred embodiments of the present invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides an electric power automation relay explosion-proof equipment, includes the casing, its characterized in that: the explosion-proof device is characterized by also comprising explosion-proof sheets and a protective cover, wherein the shell is cylindrical, and two groups of explosion-proof sheets are arranged in the cylinder; the explosion-proof sheet is circular, the edge of the explosion-proof sheet is fixed on the shell, the center of the upper surface of the explosion-proof sheet body is inwards sunken to form a concave cavity structure, and explosion groove lines are preset on the explosion-proof sheet concave cavity body in a radiation manner at equal intervals by taking a central point as a circle center; the edge of the protective cover is provided with a buckle which is buckled on the shell.
2. An explosion-proof device for an electric power automation relay as claimed in claim 1, characterized in that: the two groups of explosion-proof sheet concave cavity structures are arranged in a reverse direction.
3. An explosion-proof device for an electric power automation relay as claimed in claim 1, characterized in that: the burst slot line radiates in five equal parts or eight equal parts by taking the central point as the center of a circle.
4. An explosion-proof device for an electric power automation relay as claimed in claim 1, characterized in that: and the edge of the cavity structure of the explosion-proof sheet is provided with a pressure relief vent hole.
5. An explosion-proof device for an electric power automation relay as claimed in claim 4, characterized in that: the four pressure relief vent holes are symmetrically arranged.
6. An explosion-proof device for an electric power automation relay as claimed in claim 1, characterized in that: an annular sealing ring is arranged between the protective cover and the shell.
7. An explosion-proof device for an electric power automation relay as claimed in claim 1, characterized in that: the shell is provided with bolt holes and is fixed on the relay through bolts.
8. An explosion-proof device for an electric power automation relay as claimed in claim 1, characterized in that: the thickness of the explosion-proof piece is gradually reduced from the edge to the inside, and the minimum thickness of the center is 0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821827591.XU CN211208324U (en) | 2018-11-07 | 2018-11-07 | Explosion-proof device of electric power automation relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821827591.XU CN211208324U (en) | 2018-11-07 | 2018-11-07 | Explosion-proof device of electric power automation relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211208324U true CN211208324U (en) | 2020-08-07 |
Family
ID=71885082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821827591.XU Expired - Fee Related CN211208324U (en) | 2018-11-07 | 2018-11-07 | Explosion-proof device of electric power automation relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211208324U (en) |
-
2018
- 2018-11-07 CN CN201821827591.XU patent/CN211208324U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200807 Termination date: 20211107 |