CN210979156U

CN210979156U - Anti-seismic underframe device for high-voltage lightning arrester

Info

Publication number: CN210979156U
Application number: CN201921776355.4U
Authority: CN
Inventors: 张志姝; 高燕
Original assignee: Shanghai University of Engineering Science
Current assignee: Shanghai University of Engineering Science
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-10
Anticipated expiration: 2029-10-22

Abstract

The utility model relates to a high-pressure lightning arrester is with antidetonation chassis device, including supporting seat, landing leg and the elastic connection mechanism that is used for installing the lightning arrester, the bottom fixed connection of landing leg one end and supporting seat, the other end pass through elastic connection mechanism and set up in subaerial ground built-in fitting swing joint, the landing leg set up four, expand respectively to the supporting seat all around, compare with prior art, the utility model has the advantages of shockproof grade is high, prevent turning on one's side and assemble simply.

Description

Anti-seismic underframe device for high-voltage lightning arrester

Technical Field

The utility model belongs to the technical field of substation equipment technique and specifically relates to a high-voltage lightning arrester is with antidetonation chassis device is related to.

Background

The high-voltage zinc oxide arrester is an important protective electrical appliance in a power transmission and transformation network, and in operation, the high-voltage zinc oxide arrester not only bears the action of wire tension and wind force, but also considers the influence of earthquake force, especially an ultra-high voltage arrester of 330kV or above, and because of high voltage, the whole structure of the high-voltage zinc oxide arrester is mostly in a single-column vertical type, is thin and high, and is easy to be influenced by the earthquake force to generate instability. For example, the height of a 550kV lightning arrester is 8 m after the lower base is added, and the overall gravity center is very high. Through the investigation and the display of the earthquake disasters in China, the earthquake easily causes serious damage to electric facilities such as a lightning arrester, and the like, so that the electric power system is interrupted for a long time, and great loss is brought to national economy, and therefore, the anti-seismic performance of the high-voltage zinc oxide lightning arrester is very important for safe and reliable operation.

The existing high-voltage lightning arrester is rigidly connected with a concrete embedded part through foundation bolts on a bottom frame, and the fortification intensity is mostly 7-8 levels, so that the prior art is difficult to meet the requirements that in practice, the fortification intensity of some regions on electric power facilities reaches 9 levels.

How to design the high-voltage arrester chassis makes the high-voltage arrester can satisfy the requirement of intensity of seting up defences, and the assembly is simple, with low costs simultaneously, is the urgent demand of high-voltage arrester at present.

The existing high-voltage arrester underframe mainly has the following technical defects:

(1) when the high-voltage arrester is installed on the existing underframe, the gravity center is high, the high-voltage arrester has no buffer performance, and the high-voltage arrester is difficult to resist the earthquake impact with the intensity of 9 grades, so that a zinc oxide valve plate in a product is damaged in the earthquake, and the use reliability of the product is further influenced;

(2) when the high-voltage arrester is installed on the existing underframe, the structural support is concentrated, so that the high-voltage arrester is short in transverse length and weak in anti-rollover performance, and is easy to cause overall transverse rollover in an earthquake.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high-pressure lightning arrester that sets up defences intensity is higher and can prevent turning on one's side is with antidetonation chassis device in order to overcome the defect that above-mentioned prior art exists.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a high-pressure lightning arrester is with antidetonation chassis device, is including supporting seat, landing leg and the elastic connection mechanism that is used for installing the lightning arrester, the bottom fixed connection of landing leg one end and supporting seat, the other end pass through elastic connection mechanism and set up in subaerial ground built-in fitting swing joint, the landing leg set up four, expand around to the supporting seat respectively.

Furthermore, the connection part of the supporting leg and the foundation embedded part is correspondingly provided with a connecting part, the connecting part is internally provided with a first through hole and a second through hole which are communicated with each other, the first through hole is arranged above the second through hole, the diameter of the first through hole is smaller than that of the second through hole, the foundation embedded part is provided with a groove, and the elastic connecting mechanism penetrates through the first through hole and the second through hole and is placed in the groove on the foundation embedded part.

Further, elastic connection mechanism include adjusting nut, set up the dish spring bottom plate of centre bore, the dish spring roof of central trompil respectively, set up dish spring and adjusting screw between dish spring bottom plate and dish spring roof, dish spring roof and dish spring set up respectively in the second through-hole, adjusting screw pass first through-hole in proper order, dish spring roof and dish spring after, stretch out the second through-hole and with dish spring bottom plate fixed connection, the bottom of dish spring bottom plate and adjusting screw place in the recess of ground built-in fitting, adjusting screw's top stretch out first through-hole, and be connected with adjusting nut, the elasticity is adjusted to rotatory adjusting nut to adapt to the dish spring of different rigidity.

Furthermore, the disc spring top plate is arranged at the top of the second through hole and is in boundary with the first through hole.

Furthermore, adjusting screw connect gradually integrated into one piece by the different cylinder of three diameter, its upper portion cylinder is equipped with the external screw thread, and passes first through-hole and dish spring roof, and the middle part cylinder passes the dish spring, and lower part cylinder is connected with dish spring bottom plate, the cylindrical diameter in middle part be greater than upper portion cylinder and lower part cylinder diameter respectively, and be less than the diameter of first through-hole, guarantee the stable connection between adjusting screw and the dish spring bottom plate, guarantee simultaneously that adjusting screw can move in first through-hole and second through-hole, play absorbing effect.

Furthermore, elastic connection mechanism still include the dust cover on dust sleeve and set up in the connecting portion upper portion of landing leg, dust sleeve's bottom and dish spring bottom plate fixed connection, during upper portion stretched into the second through-hole, surround adjusting screw and dish spring, play dustproof guard action to elastic connection mechanism.

Furthermore, a gap is formed between the top of the dustproof sleeve and the disc spring top plate, and a gap is formed between the bottom of the dustproof cap and the top end of the adjusting screw rod, so that the dustproof cap and the dustproof sleeve are prevented from being damaged due to collision caused by too large vibration amplitude.

Furthermore, the middle lower part of the side wall of the second through hole is provided with an annular guide groove, and a guide ring is arranged in the annular guide groove, so that the friction between the dustproof sleeve and the inner side wall of the second through hole is reduced.

Compared with the prior art, the utility model has the advantages of it is following:

1) by arranging the disc spring, the vertical vibration caused by an earthquake can be effectively slowed down, the vibration energy is absorbed, and the anti-seismic performance of the lightning arrester is improved;

2) the cross-shaped supporting legs are arranged, so that the transverse length in each direction is increased, the anti-rollover capacity of the lightning arrester is improved, and the lightning arrester is prevented from rollover in vibration;

3) by arranging the adjusting screw rod and the adjusting nut, the adjusting nut can be rotated to adjust the compression amount of the disc spring, so that the anti-seismic device adapts to anti-seismic requirements of different environments and disc springs with different rigidity, and has stronger adaptability;

4) the utility model discloses a device spare part is few and easily processing, and the assembly is simple, and is with low costs, and improve equipment uses the reliability, has fine economic meaning.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of the anti-seismic underframe apparatus of the utility model;

fig. 2 is a schematic structural view of the connecting portion and the spring connecting mechanism of the anti-seismic underframe apparatus of the present invention;

fig. 3 is the three-dimensional structure schematic diagram of the anti-seismic underframe device of the utility model.

Wherein: 1. supporting seat, 2, landing leg, 3, dust cap, 4, adjusting nut, 5, dish spring roof, 6, dish spring, 7, dish spring bottom plate, 8, adjusting screw, 9, guide ring, 10, dust sleeve, 11, ground built-in fitting, 12, arrester.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example (b):

as shown in fig. 1 and 3, the utility model provides a high-pressure lightning arrester is with antidetonation chassis device, including supporting seat 1, landing leg 2 and the elastic connection mechanism that is used for installing lightning arrester 12, the bottom fixed connection of 2 one ends of landing leg and supporting seat 1, the other end pass through elastic connection mechanism with set up in subaerial ground built-in fitting 11 swing joint, in this embodiment, landing leg 2 sets up four, is cross expansion along supporting seat 1, guarantees that 1 focus of supporting seat reduces and has better stability.

As shown in fig. 2, the elastic connection mechanism includes an adjusting nut 4, a disc spring bottom plate 7 with a central hole, a disc spring top plate 5 with a central hole, a disc spring 6 arranged between the disc spring bottom plate 7 and the disc spring top plate 5, and an adjusting screw 8.

Landing leg 2 corresponds with the junction of ground built-in fitting 11 and sets up connecting portion, set up the first through-hole and the second through-hole of mutual intercommunication in the connecting portion respectively, first through-hole sets up in the top of second through-hole, and its diameter is less than the diameter of second through-hole, place dish spring roof 5 and dish spring 6 in the second through-hole, wherein dish spring roof 5 is fixed to be set up in second through-hole top, with first through-hole boundary department, adjusting screw 8 passes first through-hole and dish spring roof 5 and dish spring 6 back in proper order, with dish spring bottom plate 7 fixed connection, set up the recess on the ground built-in fitting 11, adjusting screw 8's bottom is stretched out the second through-hole and is connected the back with dish spring bottom plate 7, place in this recess. The top end of the adjusting screw rod 8 extends out of the first through hole and is connected with the adjusting nut 4, and the disc spring 6 is placed in a pre-compression amount when being arranged between the disc spring top plate 5 and the disc spring bottom plate 7, and the compression amount can be adjusted by the adjusting nut 4 in a rotating mode so as to adapt to the disc springs 6 with different rigidity.

In this embodiment, adjusting screw 8 connects gradually integrated into one piece by the different cylinder of three diameter, and its upper portion cylinder passes first through-hole and dish spring roof 5, and the diameter in the hole of seting up in the middle of dish spring roof 5 equals with the diameter of first through-hole, and the middle part cylinder passes dish spring 6, and lower part cylinder is connected with dish spring bottom plate 7, the cylindrical diameter in middle part be greater than upper portion cylinder and lower part cylinder diameter respectively, and be less than the diameter of first through-hole. Keep certain distance between the inside wall of upper portion cylinder and first through-hole, make elastic connection mechanism can have certain horizontal vibrations and alleviate the ability, the first through-hole just can be passed to the middle part cylinder, guarantees elastic connection mechanism's up-and-down motion and cushions the earthquake, and lower part cylinder diameter is less than middle part cylinder diameter, can guarantee that dish spring bottom plate 7 connects on adjusting screw 8 firmly.

Elastic connection mechanism still includes dust sleeve 10 and sets up in the dust cap 3 on the connecting portion upper portion of landing leg 2, can play effectual dustproof effect, and in this embodiment, dust sleeve 10's cross section is two relative L shapes, its bottom and dish spring bottom plate 7 fixed connection, can be along with dish spring bottom plate 7 at landing leg 2 internal motion, and upper portion stretches into in the second through-hole, surrounds adjusting screw 8 and dish spring 6, and annular guide way is seted up to the well lower part of the lateral wall of second through-hole, annular guide way in be equipped with guide ring 9, reduce dust sleeve 10's kinetic friction.

The top of the dustproof sleeve 10 is a certain distance away from the disc spring top plate 5, so that the dustproof sleeve 10 moving in the use process cannot collide with the disc spring top plate 5 to move and interfere to damage the dustproof sleeve 10, the bottom of the dustproof cap 3 is a certain distance away from the top end of the adjusting screw 8, and the adjusting screw 8 moving in the use process cannot collide with the dustproof cap 3 to move and interfere to damage the dustproof cap 3.

When the earthquake excitation in the vertical direction is transmitted through the foundation embedded part 11, the earthquake excitation is firstly transmitted to the disc spring 6 through the disc spring bottom plate 7, the disc spring 6 absorbs the excitation energy through reciprocating compression deformation to achieve the purpose of shock absorption, the adjusting nut 4, the adjusting screw 8, the disc spring bottom plate 7 and the dustproof sleeve 10 jointly move in the vertical direction in a small range, the supporting leg and the supporting seat 1 are not influenced or are slightly influenced, the anti-seismic effect of the lightning arrester 12 is effectively realized, and therefore the internal elements of the lightning arrester 12 are protected from being damaged due to the earthquake excitation.

When the transverse excitation of the earthquake is transmitted through the embedded part, the lightning arrester 12 is rigidly connected with the supporting leg 2, and the supporting leg 2 is long in transverse length, so that the anti-rollover capacity of the lightning arrester 12 is greatly enhanced.

The utility model discloses the assembly process of device as follows:

firstly, a guide ring 9 is placed in an annular guide groove, a disc spring bottom plate 7, an adjusting screw 8 and a dustproof sleeve 10 are fixedly connected, after a disc spring 6 and a disc spring top plate 5 are sleeved on the adjusting screw 8, the whole body is placed into a second through hole and a first through hole from the bottom, an adjusting nut 4 is fixedly connected with the adjusting screw 8 from the outside of the first through hole, a dustproof cap 3 is installed on the upper surface of a connecting part of a supporting leg 2 after the adjusting nut 4 is properly rotated, the supporting leg 2 is fixedly connected with a supporting seat 1, the assembling process is repeated on the four supporting legs 2, and finally a cross-shaped bottom frame is formed. And then the bottom of the adjusting screw 8 and the disc spring bottom plate 7 are slowly placed into the groove of the foundation embedded part 11 through integral hoisting. And finally, fixedly connecting the lightning arrester 12 with the supporting seat 1.

The utility model discloses the disintegration process of device as follows:

the lightning arrester 12 is slowly disassembled from the device by hoisting, the fixed connection between the supporting seat 1 and the four supporting legs 2 is removed, and the supporting seat 1 is disassembled;

the fixed connection of the dustproof cap 3 is removed, and the dustproof cap 3 is disassembled;

fixing the support legs 2 by adopting a tool, reversely rotating the adjusting nut 4, and disassembling the adjusting nut 4;

taking out the disc spring 6, the disc spring top plate 5, the disc spring bottom plate 7 and the dustproof sleeve 10, removing the fixed connection of the disc spring bottom plate 7, the adjusting screw 8 and the dustproof sleeve 10, and disassembling the disc spring bottom plate 7, the adjusting screw 8 and the dustproof sleeve 10;

and finally, taking out the guide ring 9 to finish the disassembly of the whole underframe device.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a high-voltage arrester is with antidetonation chassis device, its characterized in that, including supporting seat (1), landing leg (2) and the elastic connection mechanism that is used for installing arrester (12), the bottom fixed connection of landing leg (2) one end and supporting seat (1), the other end pass through elastic connection mechanism and set up in subaerial ground built-in fitting (11) swing joint, landing leg (2) set up four, expand around to supporting seat (1) respectively.

2. The anti-seismic underframe device for the high-voltage arrester as claimed in claim 1, wherein a connecting portion is correspondingly arranged at the joint of the supporting leg (2) and the foundation embedded part (11), a first through hole and a second through hole which are communicated with each other are respectively arranged in the connecting portion, the first through hole is arranged above the second through hole, the diameter of the first through hole is smaller than that of the second through hole, a groove is arranged on the foundation embedded part (11), and the elastic connecting mechanism penetrates through the first through hole and the second through hole and is placed in the groove on the foundation embedded part (11).

3. An anti-seismic chassis arrangement for a high voltage lightning arrester according to claim 2, the elastic connecting mechanism comprises an adjusting nut (4), a disc spring bottom plate (7) and a disc spring top plate (5) which are respectively provided with a central hole, a disc spring (6) arranged between the disc spring bottom plate (7) and the disc spring top plate (5) and an adjusting screw rod (8), the disc spring top plate (5) and the disc spring (6) are respectively arranged in the second through hole, the adjusting screw rod (8) sequentially passes through the first through hole, the disc spring top plate (5) and the disc spring (6), extends out of the second through hole and is fixedly connected with the disc spring bottom plate (7), the bottom ends of the disc spring bottom plate (7) and the adjusting screw rod (8) are placed in a groove of the foundation embedded part (11), the top end of the adjusting screw rod (8) extends out of the first through hole and is connected with the adjusting nut (4).

4. An anti-seismic underframe device for a high-voltage lightning arrester according to claim 3, characterized in that the disc spring top plate (5) is arranged on the top of the second through hole at the boundary with the first through hole.

5. An anti-seismic underframe device for a high-voltage lightning arrester according to claim 3, characterized in that the adjusting screw (8) is formed by connecting three cylinders with different diameters in sequence, the upper cylinder is provided with external threads and passes through the first through hole and the disc spring top plate (5), the middle cylinder passes through the disc spring (6), the lower cylinder is connected with the disc spring bottom plate (7), and the diameter of the middle cylinder is respectively larger than the diameter of the upper cylinder and the diameter of the lower cylinder and smaller than the diameter of the first through hole.

6. An anti-seismic underframe device for a high-voltage lightning arrester according to claim 3, characterized in that the elastic connection mechanism further comprises a dust-proof sleeve (10) and a dust-proof cap (3) arranged on the top of the connection part of the supporting leg (2), the bottom of the dust-proof sleeve (10) is fixedly connected with the disc spring bottom plate (7), and the upper part of the dust-proof sleeve extends into the second through hole to surround the adjusting screw rod (8) and the disc spring (6).

7. An anti-seismic underframe device for a high-voltage lightning arrester according to claim 6, characterized in that the middle-lower part of the side wall of the second through hole is provided with an annular guide groove, and a guide ring (9) is arranged in the annular guide groove.

8. An anti-seismic underframe device for a high-voltage lightning arrester according to claim 6, characterized in that a gap is arranged between the top of the dust-proof sleeve (10) and the disc spring top plate (5), and a gap is arranged between the bottom of the dust-proof cap (3) and the top of the adjusting screw rod (8).