CN112490878A - High-low voltage switch cabinet with explosion-proof function - Google Patents
High-low voltage switch cabinet with explosion-proof function Download PDFInfo
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- CN112490878A CN112490878A CN202011421027.XA CN202011421027A CN112490878A CN 112490878 A CN112490878 A CN 112490878A CN 202011421027 A CN202011421027 A CN 202011421027A CN 112490878 A CN112490878 A CN 112490878A
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- Prior art keywords
- pressure relief
- cover plate
- explosion
- cavity
- low voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
Abstract
The invention discloses a high-low voltage switch cabinet with an explosion-proof function, which comprises a cabinet body provided with an installation cavity and a first pressure relief opening, wherein the installation cavity is used for installing each electric element, the first pressure relief opening is communicated with the installation cavity, a first fixed cover of a primary pressure relief assembly is connected with the cabinet body and is provided with a first pressure relief cavity and a first air outlet communicated with the first pressure relief cavity, a first pressure relief pipe is connected with the first fixed cover and is communicated with the first air outlet, a first pressure relief cover plate is arranged in the first pressure relief cavity and covers the first pressure relief opening, and a first elastic piece is elastically abutted against the first pressure relief cover plate and the first fixed cover. The high-low voltage switch cabinet with the explosion-proof function has better sealing performance, and meanwhile, the pressure relief process is smoother, so that the safety performance of the high-low voltage switch cabinet is improved to a greater extent.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a high-low voltage switch cabinet with an explosion-proof function.
Background
The busbar bearing current in the switch cabinet can bear loop design current, and the heating of the busbar is within a design allowable range. Short circuit or other insulation fault in the cabinet can produce huge generating heat and even arcing, and quick energy release can produce huge pressure in the cubical switchboard, causes the cubical switchboard to burst, damages adjacent cubical switchboard and causes the loss to enlarge, injures on-the-spot staff even.
In the related art, a pressure relief cover plate capable of being automatically turned over is usually arranged for pressure relief, so that explosion of a switch cabinet is avoided, but the pressure relief cover plate covers an opening of the switch cabinet under the action of gravity, so that the sealing performance of a cabinet is poor, and hot splashes generated by arcing are splashed to the outside in the pressure relief process of the switch cabinet, so that adjacent electric equipment is ignited, and the safety production problem is caused.
Disclosure of Invention
The invention mainly aims to provide a high-low voltage switch cabinet with an explosion-proof function, aiming at improving the safety performance of the high-low voltage switch cabinet while ensuring the explosion-proof performance of the high-low voltage switch cabinet.
In order to achieve the above object, the present invention provides a high-low voltage switch cabinet with explosion-proof function, comprising:
the cabinet body is provided with an installation cavity and a first pressure relief opening communicated with the installation cavity; and
the first-stage pressure relief assembly comprises a first fixed cover, a first pressure relief cover plate, a first elastic piece and a first pressure relief pipe, the first fixed cover is connected to the cabinet body and provided with a first pressure relief cavity and a first air outlet communicated with the first pressure relief cavity, the first pressure relief pipe is connected to the first fixed cover and communicated with the first air outlet, the first pressure relief cover plate is arranged in the first pressure relief cavity and covers the first pressure relief opening, and the first elastic piece is elastically abutted against the first pressure relief cover plate and the first fixed cover;
the first elastic piece provides elastic force to enable the first pressure relief cover plate to cover the first pressure relief opening, and the first pressure relief cover plate overcomes the elastic force to communicate the first pressure relief opening with the first air outlet.
Optionally, the first elastic element includes at least one spring, and the spring is disposed in the first pressure relief cavity and elastically abuts against the cavity bottom wall of the first pressure relief cavity and the first pressure relief cover plate.
Optionally, the first elastic element further includes a guide rod, the guide rod is disposed in the first pressure relief cavity and connected to the first fixing cover, the first pressure relief cover plate is provided with a guide hole penetrating through two opposite plate surfaces of the first pressure relief cover plate, the guide rod penetrates through the guide hole, and the spring is sleeved on the guide rod.
Optionally, the first-stage pressure relief assembly further comprises a first sealing ring, the first sealing ring is arranged on the first pressure relief cover plate, the first pressure relief cover plate covers the first air outlet, and the first sealing ring is elastically abutted against the cabinet body and the first pressure relief cover plate.
Optionally, the first pressure relief cover plate faces the surface of one side of the cabinet body, and a mounting groove is formed in the surface of the first pressure relief cover plate, and the first sealing ring is elastically embedded in the mounting groove.
Optionally, the direction of the elastic movement of the first pressure relief cover plate is the pressure relief direction, and the first pressure relief opening is arranged in a flaring shape along the pressure relief direction.
Optionally, the high-low voltage switch cabinet with the explosion-proof function further comprises a second-stage pressure relief assembly, the second-stage pressure relief assembly comprises a second fixed cover, a second pressure relief cover plate, a second elastic piece and a second pressure relief pipe, the cabinet body is further provided with a second pressure relief opening communicated with the installation cavity, and the second pressure relief opening and the first pressure relief opening are arranged at intervals;
the second fixing cover is connected with the cabinet body, a second pressure relief cavity and a second gas outlet communicated with the second pressure relief cavity are arranged on the second fixing cover, a second pressure relief pipe is connected with the second fixing cover and communicated with the second gas outlet, a second pressure relief cover plate is arranged in the second pressure relief cavity and covers the second pressure relief opening, and the second elastic piece is elastically abutted to the second pressure relief cover plate and the second fixing cover.
Optionally, the elastic force of the second elastic member is greater than the elastic force of the first elastic member.
Optionally, the cabinet body includes shell and safety cover, the shell is equipped with the installation cavity first pressure release mouth with second pressure release mouth, first fixed cover with the fixed cover of second connect in the shell, the safety cover connect in the shell to the cover is located first fixed cover with the outside of the fixed cover of second.
Optionally, the cabinet body still includes the filter screen, the filter screen panel locate first pressure release pipe with the export of second pressure release pipe.
According to the technical scheme, the high-low voltage switch cabinet with the explosion-proof function comprises a cabinet body provided with an installation cavity and a first pressure relief opening, wherein the installation cavity is used for installing each electric element, the first pressure relief opening is communicated with the installation cavity, a first fixed cover of a first-stage pressure relief assembly is connected to the cabinet body and is provided with a first pressure relief cavity and a first air outlet communicated with the first pressure relief cavity, a first pressure relief pipe is connected to the first fixed cover and is communicated with the first air outlet, a first pressure relief cover plate is arranged in the first pressure relief cavity and covers the first pressure relief opening, and a first elastic piece is in elastic abutting connection with the first pressure relief cover plate and the first fixed cover. In the invention, under the action of elasticity provided by the first elastic piece in a natural state, the first pressure relief cover plate is firmly covered on the first pressure relief opening, so that the sealing performance of the installation cavity is ensured, when the pressure in the installation cavity reaches a preset value, the first pressure relief cover plate is acted by the pressure in the installation cavity to overcome the action of the elasticity, the first air outlet is gradually opened, so that the air in the installation cavity flows into the pressure relief cavity from the first pressure relief opening and flows to the first air outlet from the pressure relief cavity, and finally the pressure relief is conducted to the outside through the first pressure relief pipe to complete the pressure relief.
According to the process, the installation cavity has better sealing performance through the arranged first elastic piece, the first pressure relief cover plate overcomes the elastic force to gradually open the first air outlet, the whole pressure relief process is smooth, the situation that high-temperature splashes in the installation cavity largely fly out in a short time is further avoided, the high-temperature splashes in the air are further discharged to the external environment after moving for a certain time through the buffering and guiding effect of the first pressure relief pipe, the temperature of the high-temperature splashes is reduced, the situation that the high-temperature splashes ignite external objects is avoided, and the safety performance of the high-pressure switch cabinet is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a high-low voltage switch cabinet with an explosion-proof function according to the present invention;
fig. 2 is an exploded view of the high-low voltage switch cabinet with explosion-proof function shown in fig. 1;
fig. 3 is a top view of the high-low voltage switch cabinet with the explosion-proof function shown in fig. 1;
fig. 4 is a sectional view along IV-IV of the high-low voltage switchgear with explosion-proof function shown in fig. 3;
FIG. 5 is an enlarged detail view of A in FIG. 4;
FIG. 6 is a schematic view of the primary pressure relief assembly of FIG. 2;
fig. 7 is an exploded view of the primary pressure relief assembly of fig. 6.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 7, the present invention provides a high-low voltage switch cabinet 100 with an explosion-proof function.
In the embodiment of the invention, the high-low voltage switch cabinet 100 with the explosion-proof function comprises a cabinet body 10 and a primary pressure relief assembly 20, wherein the cabinet body 10 comprises a shell 11 and a protective cover 12, the shell 11 and the protective cover 12 are of a shell structure made of metal sheet materials, the whole shell 11 is rectangular, and a mounting cavity 10a and a first pressure relief opening 10b are formed by machining, the mounting cavity 10a is used for mounting each electrical element, and the first pressure relief opening 10b is arranged on one side of the shell 11 and communicated with the mounting cavity 10 a. The protective cover 12 is connected to the first relief port 10b side by welding or screws.
The primary pressure relief assembly 20 includes a first fixing cover 21, a first pressure relief cover plate 22, a first elastic member 23 and a first pressure relief pipe 24, wherein the first fixing cover 21 is connected to one side of the cabinet 10 by screws and covers the first pressure relief opening 10b, the first fixing cover 21 is a casing structure, the casing structure is formed with a first pressure relief cavity 21a and a first air outlet 21b communicated with the first pressure relief cavity 21a, the first pressure relief pipe 24 is connected to the first fixing cover 21 and extends along the height direction of the housing 11, the first pressure relief pipe 24 covers the first air outlet 21b and is communicated with the first air outlet 21b, the first pressure relief cover plate 22 is arranged in the first pressure relief cavity 21a and covers the first opening 10b, and the first elastic member 23 is elastically abutted against the first pressure relief cover plate 22 and the first fixing cover plate 21;
in the invention, under the action of elasticity provided by the first elastic element 23 in a natural state, the first pressure relief cover plate 22 firmly covers the first pressure relief opening 10b, so that the sealing performance of the installation cavity 10a is ensured, and when the pressure in the installation cavity 10a reaches a preset value, the first pressure relief cover plate 22 is acted by the pressure in the installation cavity 10a to overcome the action of elasticity, so as to gradually open the first air outlet 21b, so that the air in the installation cavity 10a flows into the pressure relief cavity from the first pressure relief opening 10b and flows to the first air outlet 21b from the pressure relief cavity, and finally is guided to the outside through the first pressure relief pipe 24 to complete pressure relief. From the above process, it can be seen that the high-low voltage switch cabinet 100 with an explosion-proof function of the present invention has the advantages that the installation cavity 10a has good sealing performance through the first elastic member 23, and meanwhile, the first pressure relief cover plate 22 overcomes the elastic force to gradually open the first air outlet 21b, so that the whole pressure relief process is relatively smooth, thereby avoiding a situation that a large amount of high-temperature splashes in the installation cavity 10a fly out in a short time, and further, the high-temperature splashes in the air are discharged to the external environment after moving for a certain time through the buffering and guiding function of the first pressure relief pipe 24, so as to reduce the temperature of the high-temperature splashes, thereby avoiding a situation that the high-temperature splashes ignite external objects, and greatly improving the safety performance.
Referring to fig. 5 and fig. 7 again, in an embodiment of the present invention, the first elastic element 23 includes at least one spring 231, and the spring 231 is disposed in the first pressure relief cavity 21a and elastically abuts against the cavity bottom wall of the first pressure relief cavity 21a and the first pressure relief cover 22.
Particularly, first elastic component 23 is including locating four springs 231 in first pressure release chamber 21a, four guide arms 232, wherein set up the guide hole that four intervals set up on the first pressure release apron 22, four guide holes run through two relative faces of first pressure release apron 22, the one end fixed connection of guide arm 232 is in the chamber diapire of first pressure release chamber 21a, the guide hole is worn to locate by the other end, the outside of guide arm 232 is located to spring 231 cover, and elasticity butt in the chamber diapire of first pressure release chamber 21a and the face that first pressure release apron deviates from shell 11 one side. In the invention, when the pressure in the installation cavity 10a reaches a preset value, the first pressure relief cover plate 22 is acted by the acting force from the installation cavity 10a to overcome the elastic force of the spring 231, moves towards the side away from the shell 11, and gradually communicates the first air guide hole, the first pressure relief cavity 21a and the first pressure relief opening 10b, so that the smooth pressure relief of the installation cavity 10a is realized. First elastic component 23's simple structure, the effect of pressure release is better, and at whole pressure release in-process, through the guide effect of a plurality of guide arms 232, make first pressure release apron 22 when first pressure release chamber 21a internal motion, the orbit of its motion is comparatively stable, can not die in first pressure release chamber 21a because the effort that the face received is inhomogeneous and the beat card, whole pressure release in-process is mild and one-level pressure release component 20's work is comparatively stable.
In other embodiments of the present invention, a guide rail is disposed on a side wall of the first pressure-releasing cavity 21a, the guide rail extends along the pressure-releasing direction, a sliding groove is formed on a side wall surface of the first pressure-releasing cover 22 by machining, the first pressure-releasing cover 22 is disposed in the first pressure-releasing cavity 21a, and the guide rail is slidably embedded in the sliding groove, so that when the first pressure-releasing cover 22 moves in the first pressure-releasing cavity 21a, the function of gentle pressure-releasing can be achieved by a guiding and limiting function of the guide rail and the sliding groove. The primary pressure relief assembly 20 is thus simpler in construction.
Referring to fig. 6 and 7 again, it can be understood that when the first pressure relief cover 22 covers the first pressure relief opening 10b, the first pressure relief cover 22 is attached to the edge of the first pressure relief opening 10b, so as to avoid that in a natural state, air in the installation cavity 10a flows out from a gap between the first pressure relief cover 22 and the housing 11, and the working performance of the electrical component in the installation cavity 10a is affected. In one embodiment of the present invention, the primary pressure relief assembly 20 further comprises a first sealing ring 25.
Wherein, the first sealing ring 25 is made of elastic material, preferably, made of antistatic silicon rubber material, the first sealing ring 25 extends annularly, the extending track is the same as the shape of the first pressure relief opening 10b, the plate surface of the first pressure relief cover plate 22 facing to one side of the housing 11 is machined to form an annular mounting groove 22b, the cross-sectional area of the mounting groove 22b is slightly smaller than that of the first sealing ring 25, after the first sealing ring 25 is embedded into the mounting groove 22b, the first sealing ring 25 is elastically abutted to the groove side wall of the mounting groove 22b, so that the assembly of the first sealing ring 25 is simpler.
In the invention, when the first pressure relief cover plate 22 abuts against the housing 11 under the action of the elastic force of the spring 231, the first sealing ring 25 abuts against the housing 11 elastically and is positioned outside the first pressure relief opening 10b, so that the space in the installation cavity 10a is prevented from flowing out from the gap between the first pressure relief cover plate 22 and the housing 11 to a greater extent, the sealing performance of the housing 11 is better, and the stability of the working performance of each electric element in the installation cavity 10a is ensured.
Referring to fig. 5 and fig. 7 again, it should be noted that, in the present invention, a direction of the first pressure relief cover 22 moving against the elastic force of the first elastic element 23 is a pressure relief direction, that is, a direction of the first pressure relief cover 22 moving away from the housing 11 is a pressure relief direction. When the first pressure-releasing cover plate 22 moves in the pressure-releasing direction, the first air outlet 21b is gradually opened. It is understood that the further the first pressure relief cover plate 22 moves in the pressure relief direction, the greater the force to which the first pressure relief cover plate 22 is subjected, that is, the greater the pressure in the installation cavity 10 a. Therefore, in order to make the primary pressure relief assembly 20 better relieve the pressure in the installation cavity 10a, in an embodiment of the present invention, the first air outlet 21b is flared along the pressure relief direction. In this embodiment, the first air outlet 21b is opened above the first fixing cover 21, and the whole of the first air outlet is trapezoidal. When the first pressure relief cover plate 22 moves towards the pressure relief direction, the area of the first air outlet 21b communicated with the first pressure relief cavity 21a is increased by geometric multiple, so that more air can be exhausted in unit time, the pressure relief of the installation cavity 10a is completed in a short time, and the explosion of the shell 11 is avoided. As can be seen from the above, in the present invention, when the pressure value in the installation cavity 10a is small, the first-stage pressure relief assembly 20 can relieve the pressure in the installation cavity 10a relatively gently, and when the pressure value in the installation cavity 10a is large, the first-stage pressure relief assembly 20 can also relieve the pressure in the installation cavity 10a rapidly. Thus, the high-low voltage switch cabinet 100 with the explosion-proof function has better explosion-proof performance.
Further, referring to fig. 6 and 7 again, in an embodiment of the present invention, the high-low voltage switch cabinet 100 with an explosion-proof function further includes a second stage pressure relief assembly 30, specifically, the second stage pressure relief assembly 30 includes a second fixing cover 31, a second pressure relief cover plate, a second elastic member and a second pressure relief pipe 32, the cabinet body 10 is further provided with a second pressure relief opening communicated with the installation cavity 10a, the second pressure relief opening and the first pressure relief opening 10b are arranged at an interval, the second fixing cover 31 is connected to the outer shell 11, and the second fixing cover 31 and the first fixing cover 21 are arranged at an interval outside the outer shell 11. The second fixed cover 31 is provided with a second pressure relief cavity and a second air outlet communicated with the second pressure relief cavity, the second pressure relief pipe 32 is connected with the second fixed cover 31 and communicated with the second air outlet, the second pressure relief cover plate is arranged in the second pressure relief cavity and covered on the second pressure relief opening, and the second elastic piece is elastically abutted against the second pressure relief cover plate and the second fixed cover 31. The working principle and structure of the secondary pressure relief assembly 30 can refer to the primary pressure relief assembly 20, and will not be described in detail herein. In the invention, the secondary pressure relief assembly 30 is additionally arranged, so that the pressure relief effect of the installation cavity 10a can be further improved, and the explosion-proof performance of the high-low voltage switch cabinet 100 with the explosion-proof function is further improved.
In order to realize the gradual pressure relief of the pressure in the installation cavity 10a, in an embodiment of the present invention, the elastic force of the second elastic member is greater than the elastic force of the first elastic member 23. Specifically, the elastic force of the second elastic member may be greater than that of the first elastic member 23 by appropriately selecting the type of the spring 231 used for the second elastic member or setting the compression amount of the spring 231 in the second pressure relief cavity. When the pressure in installation cavity 10a reaches the first preset value, one-level pressure relief assembly 20 begins to relieve the pressure in installation cavity 10a, and when the pressure reaches the second preset value, second grade pressure relief assembly 30 begins to relieve the pressure in installation cavity 10a, thereby realizing the echelon pressure relief to the internal pressure of installation cavity 10 a. It will be appreciated that when the pressure in the chamber 10a is low, only the first stage pressure relief assembly 20 is in operation, and the second stage pressure relief assembly 30 is in an inoperative state, so as to avoid damage caused by repeated pressure relief of the second stage pressure relief assembly 30, and when the pressure is high, the first stage pressure relief assembly 20 and the second stage pressure relief assembly 30 are in operation simultaneously, so as to relieve the chamber 10a in a short time. Further, because the working frequency of the first-level pressure relief assembly 20 is adjusted more frequently than that of the second-level pressure relief assembly 30, when the first-level pressure relief assembly 20 fails, the second-level pressure relief assembly 30 can also continue to relieve the pressure of the installation cavity 10a, so that the explosion-proof performance of the high-low voltage switch cabinet 100 with the explosion-proof function is further improved.
Referring to fig. 1 and 2 again, in an embodiment of the present invention, the cabinet 10 further includes a filter screen 13, wherein the filter screen 13 is preferably an anti-static filter screen 13 or a dust-absorbing filter screen 13, and the protective cover 12 is fixed outside the outer shell 11, has an upper opening, is disposed at the upper opening of the outer shell 11, and covers the outlets of the first pressure-relief pipe 24 and the second pressure-relief pipe 32. In the invention, by arranging the filter screen 13, the high-temperature splashed materials flowing out through the first pressure relief pipe 24 and the second pressure relief pipe 32 can be filtered by the filter screen 13, so that the amount of the high-temperature splashed materials splashing to the external environment is further reduced, the high-temperature splashed materials are prevented from igniting external electrical equipment to a greater extent, and the explosion-proof performance and the safety performance of the high-low voltage switch cabinet 100 with the explosion-proof function are improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. High-low voltage switchgear cabinet (100) with explosion-proof function, characterized in that it comprises:
the refrigerator comprises a cabinet body (10), wherein the cabinet body (10) is provided with a mounting cavity (10a) and a first pressure relief opening (10b) communicated with the mounting cavity (10 a); and
the first-stage pressure relief assembly (20) comprises a first fixed cover (21), a first pressure relief cover plate (22), a first elastic piece (23) and a first pressure relief pipe (24), the first fixed cover (21) is connected to the cabinet body (10) and provided with a first pressure relief cavity (21a) and a first air outlet (21b) communicated with the first pressure relief cavity (21a), the first pressure relief pipe (24) is connected to the first fixed cover (21) and communicated with the first air outlet (21b), the first pressure relief cover plate (22) is arranged in the first pressure relief cavity (21a) and covers the first pressure relief opening (10b), and the first elastic piece (23) is elastically abutted against the first pressure relief cover plate (22) and the first fixed cover (21);
the first elastic piece (23) provides elastic force to enable the first pressure relief cover plate (22) to cover the first pressure relief opening (10b), and the first pressure relief cover plate (22) overcomes the elastic force to communicate the first pressure relief opening (10b) with the first air outlet (21 b).
2. The explosion-proof high-low voltage switch cabinet (100) as claimed in claim 1, wherein the first elastic member (23) comprises at least one spring (231), and the spring (231) is disposed in the first pressure relief cavity and elastically abuts against a cavity bottom wall of the first pressure relief cavity and the first pressure relief cover plate (22).
3. The high-low voltage switch cabinet (100) with the explosion-proof function according to claim 2, wherein the first elastic member (23) further comprises a guide rod (232), the guide rod (232) is disposed in the first pressure relief cavity and connected to the first fixing cover (21), the first pressure relief cover plate (22) is provided with a guide hole penetrating through two opposite plate surfaces of the first pressure relief cover plate, the guide rod (232) is disposed through the guide hole, and the spring (231) is sleeved on the guide rod (232).
4. The high-low voltage switch cabinet (100) with an explosion-proof function according to claim 1, wherein the primary pressure relief assembly (20) further includes a first sealing ring (25), the first sealing ring (25) is disposed on the first pressure relief cover plate (22), the first pressure relief cover plate (22) covers the first air outlet (21b), and the first sealing ring (25) elastically abuts against the cabinet body and the first pressure relief cover plate (22).
5. The explosion-proof high-low voltage switch cabinet (100) as claimed in claim 4, wherein the first pressure relief cover plate (22) has a mounting groove (22b) on the surface facing the cabinet body (10), and the first sealing ring (25) is elastically embedded in the mounting groove (22 b).
6. The explosion-proof high-low voltage switch cabinet (100) as claimed in claim 1, wherein the direction of the first pressure relief cover plate (22) moving against the elastic force is a pressure relief direction, and the first pressure relief opening (10b) is arranged in a flaring shape along the pressure relief direction.
7. The explosion-proof high-low voltage switch cabinet (100) according to any one of claims 1 to 6, wherein the explosion-proof high-low voltage switch cabinet (100) further comprises a secondary pressure relief assembly (30), the secondary pressure relief assembly (30) comprises a second fixed cover (31), a second pressure relief cover plate, a second elastic member and a second pressure relief pipe (32), the cabinet body (10) further defines a second pressure relief opening communicating with the installation cavity (10a), and the second pressure relief opening is spaced from the first pressure relief opening (10 b);
the fixed cover of second (31) connect in the cabinet body (10), the fixed cover of second (31) is equipped with second pressure release chamber and intercommunication the second gas outlet in second pressure release chamber, second pressure release pipe (32) connect in the fixed cover of second (31), and with the second gas outlet is linked together, second pressure release apron is located the second pressure release intracavity, and the shroud in second pressure release mouth, second elastic component elasticity butt in second pressure release apron with the fixed cover of second (31).
8. The explosion-proof high-low voltage switchgear (100) according to claim 7, wherein the second elastic member has an elastic force greater than that of the first elastic member (23).
9. The high-low voltage switch cabinet (100) with explosion-proof function of claim 7, wherein the cabinet body (10) comprises an outer shell (11) and a protective cover (12), the outer shell (11) is provided with the installation cavity (10a), the first pressure relief opening (10b) and the second pressure relief opening, the first fixed cover (21) and the second fixed cover (31) are connected to the outer shell (11), and the protective cover (12) is connected to the outer shell (11) and covers the outer sides of the first fixed cover (21) and the second fixed cover (31).
10. The explosion-proof high-low voltage switch cabinet (100) according to claim 9, wherein the cabinet body (10) further comprises a filter screen (13), and the filter screen (13) covers the outlets of the first pressure relief pipe (24) and the second pressure relief pipe (32).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011421027.XA CN112490878B (en) | 2020-12-07 | 2020-12-07 | High-low voltage switch cabinet with explosion-proof function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011421027.XA CN112490878B (en) | 2020-12-07 | 2020-12-07 | High-low voltage switch cabinet with explosion-proof function |
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| CN112490878A true CN112490878A (en) | 2021-03-12 |
| CN112490878B CN112490878B (en) | 2022-09-23 |
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| CN202011421027.XA Active CN112490878B (en) | 2020-12-07 | 2020-12-07 | High-low voltage switch cabinet with explosion-proof function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4796159A (en) * | 1986-09-26 | 1989-01-03 | R. Stahl Schalterate GmbH | Explosion protected modular housing |
| CN204205318U (en) * | 2014-12-08 | 2015-03-11 | 常州信息职业技术学院 | The blast resistance construction of indoor electric gas holder |
| CN205212201U (en) * | 2015-08-10 | 2016-05-04 | 四川贝森电器自动化有限公司 | Pressure relief device for switch cabinet |
| CN208284825U (en) * | 2018-06-11 | 2018-12-25 | 泸州宏兴电气有限公司 | A kind of switchgear explosion-proof relief mechanism |
| CN210007143U (en) * | 2019-06-27 | 2020-01-31 | 山东恩泰电气有限公司 | overvoltage self-adjusting power distribution cabinet |
-
2020
- 2020-12-07 CN CN202011421027.XA patent/CN112490878B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4796159A (en) * | 1986-09-26 | 1989-01-03 | R. Stahl Schalterate GmbH | Explosion protected modular housing |
| CN204205318U (en) * | 2014-12-08 | 2015-03-11 | 常州信息职业技术学院 | The blast resistance construction of indoor electric gas holder |
| CN205212201U (en) * | 2015-08-10 | 2016-05-04 | 四川贝森电器自动化有限公司 | Pressure relief device for switch cabinet |
| CN208284825U (en) * | 2018-06-11 | 2018-12-25 | 泸州宏兴电气有限公司 | A kind of switchgear explosion-proof relief mechanism |
| CN210007143U (en) * | 2019-06-27 | 2020-01-31 | 山东恩泰电气有限公司 | overvoltage self-adjusting power distribution cabinet |
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| CN112490878B (en) | 2022-09-23 |
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