CN212462778U

CN212462778U - Arc extinction overvoltage protection device for transformer substation

Info

Publication number: CN212462778U
Application number: CN202020769025.9U
Authority: CN
Inventors: 宋安超; 张国勇; 卫平春; 李富强
Original assignee: Anhui Huidian Technology Co ltd
Current assignee: Anhui Huidian Technology Co ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-02-02
Anticipated expiration: 2030-05-11

Abstract

The utility model belongs to the technical field of substation equipment, concretely relates to transformer substation arc extinction overvoltage protection device, including the cabinet body of internally mounted arc extinction harmonic elimination voltage limiter and the cabinet door hinged at the front end of the cabinet body, the below of the cabinet body is provided with a supporting seat, the junction of the inner side of the cabinet door and the cabinet body has a sealing strip, the top and the bottom of the front end face of the cabinet body are respectively provided with an elastic limiting component and a rotation limiting component, when the cabinet door is closed, the elastic limiting component and the rotation limiting component respectively compress the top and the bottom of the cabinet door; the spacing subassembly of elasticity mainly includes sets up the mounting groove of seting up vertical direction and the limiting plate that is located cabinet door top front end at cabinet body front end face top both ends, the inside of mounting groove has set firmly the fixed axle of vertical direction, has overcome prior art not enough, compresses tightly the cabinet door through spacing subassembly, makes it keep inseparable closed state, avoids the inside deposition of equipment, prolongs the life of equipment, reduces the cost of overhaul.

Description

Arc extinction overvoltage protection device for transformer substation

Technical Field

The utility model belongs to the technical field of substation equipment, concretely relates to arc extinction overvoltage protection device of transformer substation.

Background

At present, with the development of power networks, the stability and safety of the power networks are deeply concerned, and the main factors of the safety of the critical power networks are arc grounding, resonance and overvoltage, single-phase intermittent arc grounding, and the arc grounding overvoltage and ferromagnetic resonance overvoltage excited by the arc grounding overvoltage are generated simultaneously, wherein the single-phase arc grounding overvoltage is the most serious.

An arc and harmonic elimination line selection and overvoltage protection device with the patent application number of CN201620969129.8 discloses an automatic control system which is formed by a microcomputer control technology, a high-voltage vacuum contactor, a voltage transformer and an overvoltage protector and used for monitoring the system voltage in real time; the device has the functions of arc extinction, harmonic elimination, line selection and overvoltage protection, provides a real-time electric signal for the microcomputer integrated controller through the voltage transformer, and the microcomputer integrated controller rapidly processes the signal, sends out corresponding instructions and signals, controls each part to rapidly extinguish the arc, eliminate the harmonic, select the line and protect the overvoltage, and has the properties of rapidness, high efficiency, accuracy and the like.

However, the door opening design adopted by the equipment often causes the cabinet door of the equipment to be in a semi-closed state due to the looseness of the door lock mechanism, so that the dust deposition in the cabinet door is serious, and the operation of the electric appliance in the equipment is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an arc extinction overvoltage protection device of transformer substation has overcome the not enough of prior art, compresses tightly the cabinet door through spacing subassembly, makes it keep inseparable closed state, avoids the inside deposition of equipment, prolongs the life of equipment, reduces the cost of overhaul.

In order to solve the above problems, the utility model adopts the following technical proposal:

an arc extinction and overvoltage protection device for a transformer substation comprises a cabinet body and a cabinet door, wherein an arc extinction and resonance elimination voltage limiter is installed inside the cabinet body, the cabinet door is hinged to the front end of the cabinet body, a supporting seat is arranged below the cabinet body, a sealing strip is arranged at the joint of the inner side of the cabinet door and the cabinet body, an elastic limiting assembly and a rotation limiting assembly are installed at the top and the bottom of the front end face of the cabinet body respectively, and when the cabinet door is closed, the elastic limiting assembly and the rotation limiting assembly compress the top and the bottom of the cabinet;

the spacing subassembly of elasticity mainly includes sets up the mounting groove of seting up vertical direction and the limiting plate that is located cabinet door top front end at cabinet body front end face top both ends, the inside of mounting groove has set firmly the fixed axle of vertical direction, the outside cover of fixed axle is equipped with the connecting block, and connecting block and fixed axle swing joint, the one end of connecting block extends to the outside of mounting groove, and is close to one side fixed connection of cabinet door with the stopper, the outside cover of fixed axle is equipped with spacing spring, spacing spring's both ends respectively with the up end of movable block and the top fixed connection of mounting groove.

Furthermore, a flexible protection pad is arranged on the surface of one side, close to the cabinet door, of the limiting plate.

Further, the interval between the top of cabinet door and the cabinet body top is greater than the height of limiting plate.

Further, rotate spacing subassembly mainly including set firmly the pivot of keeping away from hinge one end in cabinet body bottom and rotate the turning block of connection in the pivot, the turning block is close to one side surface and the contact of cabinet door, and its surface has skid-proof line.

Further, the fan case is installed to the top of the cabinet body, and the bottom and the cabinet body intercommunication of fan case, the radiator fan is installed to the fan incasement, the thermovent is worn to be equipped with in the bottom both sides of the cabinet body, set firmly the shield that is used for coveing the thermovent on the lateral wall of the cabinet body, the bottom opening of shield, and its opening part is provided with the dust screen.

Further, the spread groove of type structure is seted up to the inside of supporting seat, and its tip is located the up end of supporting seat, the bottom of spread groove has set gradually dampproofing piece and buffer pad from bottom to top, the lower terminal surface of the cabinet body has set firmly the backup pad of type structure, in backup pad top-down pegs graft to the spread groove, and the main aspects of backup pad are located the spread groove, the bottom and the blotter fixed connection of backup pad.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model provides an arc extinction overvoltage protection device of transformer substation, through spacing subassembly compress tightly the cabinet door, make it keep the inseparable closed condition, avoid the inside deposition of equipment, prolong the life of equipment, reduce the maintenance cost; through the design of cooling system and supporting seat, the security of reinforcing equipment prolongs the life of equipment.

Drawings

Fig. 1 is a schematic structural diagram of a transformer substation arc extinction overvoltage protection device.

Fig. 2 is a schematic structural diagram of a limiting plate in the arc extinction overvoltage protection device of the transformer substation.

Fig. 3 is a schematic structural diagram of a support seat in an arc extinction overvoltage protection device of a transformer substation.

In the figure: 1. a cabinet body; 2. a cabinet door; 3. a supporting seat; 4. a fan case; 5. a heat dissipation port; 6. mounting grooves; 7. a limiting plate; 8. rotating the block; 9. a rotating shaft; 10. a protection pad; 11. a fixed shaft; 12. connecting blocks; 13. a limiting spring; 14. a support plate; 15. connecting grooves; 16. a moisture-proof block; 17. a cushion pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-3, the utility model relates to a transformer substation arc extinction overvoltage protection device, including the cabinet body 1 that internally installs the arc extinction harmonic elimination voltage limiter and hinge in cabinet body 1 front end cabinet door 2, cabinet body 1 below is provided with supporting seat 3, cabinet door 2 inside and cabinet body 1 junction have sealing strips, cabinet body 1 front end face top and bottom are respectively installed elasticity spacing subassembly and rotation spacing subassembly, when cabinet door 2 closes, elasticity spacing subassembly and rotation spacing subassembly compress tightly cabinet door 2 top and bottom respectively;

the spacing subassembly of elasticity mainly includes seting up mounting groove 6 and the limiting plate 7 that is located 2 top front ends of cabinet door that sets up vertical direction at cabinet body 1 preceding terminal surface top both ends, the inside of mounting groove 6 has set firmly the fixed axle 11 of vertical direction, the outside cover of fixed axle 11 is equipped with connecting block 12, and connecting

block

12 and 11 swing joint of fixed axle, the one end of connecting block 12 extends to the outside of mounting groove 6, and be close to one side fixed connection of cabinet door 2 with the stopper, the outside cover of fixed axle 11 is equipped with limiting spring 13, limiting spring 13's both ends respectively with the up end of movable block and the top fixed connection of mounting groove 6.

When the cabinet door is used, the limiting plate 7 is pushed upwards, the extrusion connecting block 12 moves upwards along the fixed shaft 11 to extrude the connecting spring, the cabinet door 2 is closed by rotating the cabinet door 2, external force is applied to compress the cabinet door 2, then the limiting plate 7 is loosened, the limiting plate 7 moves downwards under the action of restoring force of the connecting spring and abuts against the outer wall of the cabinet door 2 to compress the cabinet door 2, and then the rotation limiting assembly is rotated to compress the bottom of the cabinet door 2, so that the cabinet door 2 is prevented from loosening, and the dustproof performance of equipment is guaranteed; in addition, when the cabinet door 2 is opened, the limiting plate 7 is abutted to the top of the cabinet door 2 under the elastic action of the connecting spring, so that the rotation of the cabinet door 2 is limited, and the use is convenient.

In order to avoid cabinet door 2 impaired, limiting plate 7 is close to one side surface of cabinet door 2 and is provided with flexible protection pad 10, and when limiting plate 7 restricted cabinet door 2, protection pad 10 contacted with cabinet door 2.

For convenient operation, the interval between the top of cabinet door 2 and the cabinet body 1 top is greater than the height of limiting plate 7, provides cabinet door 2 pivoted position.

The rotation limiting assembly mainly comprises a rotating shaft 9 fixedly arranged at one end of the bottom of the cabinet body 1 far away from the hinge and a rotating block 8 rotatably connected to the rotating shaft 9, the surface of one side, close to the cabinet door 2, of the rotating block 8 is in contact with the cabinet door 2, and anti-skid grains are arranged on the surface of the rotating block; under initial condition, rotating block 8 keeps vertical decurrent state under the action of gravity, and when cabinet door 2 closed, anticlockwise rotation rotating block 890 makes rotating block 8 and cabinet door 2 contact, because there is frictional force between rotating block 8 and the cabinet door 2, makes rotating block 8 keep horizontal state.

In order to enhance dust prevention, a fan box 4 is installed above the cabinet body 1, the bottom of the fan box 4 is communicated with the cabinet body 1, a heat radiation fan is installed in the fan box 4, heat radiation ports 5 are arranged on two sides of the bottom of the cabinet body 1 in a penetrating mode, a dust cover used for covering the heat radiation ports 5 is fixedly arranged on the side wall of the cabinet body 1, the bottom of the dust cover is provided with an opening, and a dust screen is arranged at the opening; accelerating the air flow of the cabinet body 1 and the outside after the cooling fan is started, enhancing the heat dissipation of the equipment, leading the air to enter and exit from the bottom opening of the dust cover by the dust cover at the cooling port 5, and avoiding the dust from falling on the dust screen by the downward opening.

In order to improve the safety of the cabinet body 1, a connecting groove 15 with a convex structure is formed in the supporting seat 3, the small end of the connecting groove is positioned on the upper end surface of the supporting seat 3, a damp-proof block 16 and a buffer cushion 17 are sequentially arranged at the bottom of the connecting groove 15 from bottom to top, a supporting plate 14 with a convex structure is fixedly arranged on the lower end surface of the cabinet body 1, the supporting plate 14 is inserted into the connecting groove 15 from top to bottom, the large end of the supporting plate 14 is positioned in the connecting groove 15, and the bottom end of the supporting plate 14 is fixedly connected with the buffer; the setting of blotter 17 has improved its shock attenuation buffering effect, and effectual shock attenuation prevents that vibrations are excessive.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an arc extinction overvoltage protection device of transformer substation, includes cabinet body (1) of internally mounted arc extinction harmonic elimination voltage limiter and articulates cabinet door (2) at cabinet body (1) front end, the below of the cabinet body (1) is provided with supporting seat (3), its characterized in that: sealing strips are arranged at the connecting positions of the inner side of the cabinet door (2) and the cabinet body (1), an elastic limiting assembly and a rotating limiting assembly are respectively arranged at the top and the bottom of the front end face of the cabinet body (1), and when the cabinet door (2) is closed, the elastic limiting assembly and the rotating limiting assembly respectively press the top and the bottom of the cabinet door (2);

the spacing subassembly of elasticity mainly includes seting up mounting groove (6) of seting up vertical direction and limiting plate (7) that are located cabinet door (2) top front end at terminal surface top both ends before the cabinet body (1), the inside of mounting groove (6) has set firmly fixed axle (11) of vertical direction, the outside cover of fixed axle (11) is equipped with connecting block (12), and connecting block (12) and fixed axle (11) swing joint, the one end of connecting block (12) extends to the outside of mounting groove (6), and is close to one side fixed connection of cabinet door (2) with the stopper, the outside cover of fixed axle (11) is equipped with spacing spring (13), the both ends of spacing spring (13) respectively with the up end of movable block and the top fixed connection of mounting groove (6).

2. A substation arc extinction overvoltage protection device according to claim 1, characterized in that: and a flexible protective pad (10) is arranged on the surface of one side, close to the cabinet door (2), of the limiting plate (7).

3. A substation arc extinction overvoltage protection device according to claim 1 or 2, characterized in that: the distance between the top of the cabinet door (2) and the top of the cabinet body (1) is larger than the height of the limiting plate (7).

4. A substation arc extinction overvoltage protection device according to claim 1, characterized in that: the rotation limiting assembly mainly comprises a rotating shaft (9) fixedly arranged at the bottom of the cabinet body (1) and far away from one end of the hinge and a rotating block (8) rotatably connected to the rotating shaft (9), wherein one side surface of the rotating block (8) close to the cabinet door (2) is in contact with the cabinet door (2), and the surface of the rotating block has skid-proof grains.

5. A substation arc extinction overvoltage protection device according to claim 1, characterized in that: fan case (4) are installed to the top of the cabinet body (1), and the bottom and the cabinet body (1) intercommunication of fan case (4), install radiator fan in fan case (4), thermovent (5) are worn to be equipped with in the bottom both sides of the cabinet body (1), set firmly the shield that is used for coveing thermovent (5) on the lateral wall of the cabinet body (1), the bottom opening of shield, and its opening part is provided with the dust screen.

6. A substation arc extinction overvoltage protection device according to claim 1, characterized in that: connecting groove (15) of type structure are seted up to the inside of supporting seat (3), and its tip is located the up end of supporting seat (3), the bottom of connecting groove (15) has set gradually dampproofing piece (16) and buffer pad (17) from bottom to top, the lower terminal surface of the cabinet body (1) has set firmly backup pad (14) of type structure, backup pad (14) top-down is pegged graft to in connecting groove (15), and the main aspects of backup pad (14) are located connecting groove (15), the bottom and buffer pad (17) fixed connection of backup pad (14).