CN108799401A - A kind of high voltage electric equipment seismic isolation device - Google Patents

Abstract

The invention discloses a shock-absorbing and isolating device for high-voltage electrical equipment, which comprises a support frame, a shock-absorbing seat, and a shock-absorbing frame. The shock-absorbing frame includes a cover, a base, an outer connecting seat, an elastic element, a connecting plate, a connecting rod, a pre-compressed cover and a friction member arranged on the inner wall of the outer connecting seat. It consists of a connected horizontal section and an inclined section at a certain inclination angle to the horizontal direction, and the horizontal section and the inclined section are fixedly connected. The interaction between the elastic element and the friction element in the shock-absorbing and isolating device of the present invention provides sufficient frictional damping and effectively reduces the seismic response of high-voltage electrical equipment.

Description

Shock-absorbing and isolating device for high-voltage electrical equipment

technical field

The shock absorbing device of the present invention particularly relates to a shock absorbing and isolating device for high-voltage electrical equipment.

Background technique

As an important part of the lifeline project, the power transmission and transformation project is greatly affected by the damage of the earthquake. Statistics show that in the severe earthquake of magnitude 7 and above, the bracket-like high-voltage equipment in the power transmission and transformation project is extremely easy to be damaged.

Supporting equipment includes circuit breakers, disconnectors, current transformers, voltage transformers, post insulators and lightning arresters, etc. In earthquakes, the damage rate of circuit breakers reaches up to 58%, the damage rate of disconnectors reaches up to 30%, and the damage rate of lightning arresters reaches up to 66%.

At present, the shock absorbing products used for electric porcelain brackets in China mainly include rubber pads, lead dampers and centripetal friction damping shock absorbers. Theoretical analysis and experiments have proved that the damping effect of these two products, the rubber pad and the lead alloy damper, is not ideal, especially for the shear wave action of the earthquake. Although the shock absorption effect of the centripetal friction damping shock absorber is better, the manufacture is complicated and the unit price is higher. Moreover, the disaster situation of electrical equipment is often not known.

Contents of the invention

In order to overcome the above defects, the present invention provides a device with good shock absorption effect and simple manufacturing method.

For realizing the purpose of the invention of the present invention, the present invention adopts following technical scheme:

The shock-absorbing and isolating device for high-voltage electrical equipment of the present invention includes a support frame, a shock-absorbing seat, and a shock-absorbing frame, and the shock-absorbing frame includes a cover, a base, an outer connecting seat, an elastic element, a connecting plate, a connecting rod, a preloaded The improvement of the tight cover and the friction member arranged on the inner wall of the outer connecting seat is that the elastic element is composed of a horizontal section perpendicular to the connecting rod and connected with the outer wall of the connecting rod and has a certain angle to the horizontal direction. The horizontal section is fixedly connected with the inclined section.

As a first preferred solution of the present invention, the horizontal section and the inclined section of the elastic element are both hexahedral structures; the elastic elements whose sides of the horizontal section are attached to each other and have the same inclination angle of the inclined section form an elastic unit; the horizontal sections are longitudinally connected and inclined Two groups of elastic units arranged in opposite directions form a friction unit.

As a second preferred solution of the present invention, the connecting plate is perpendicular to the connecting rod and separates each friction unit, and the vibration-absorbing and isolating device includes at least two groups of friction units.

As a third preferred solution of the present invention, the cover is movable in the vertical direction, the upper surface of the cover is higher than the upper surface of the outer connecting seat, and the connecting rod is higher than the upper surface of the cover.

As a fourth preferred solution of the present invention, the outer wall of the outer connecting seat is provided with a displacement sensor and a wind speed sensor.

As a fifth preferred solution of the present invention, the friction element is a steel wire pad.

As the sixth preferred solution of the present invention, the elastic element is made of the following elements by mass percentage: C: 0.50-0.65, Si: 0.18-0.38, Mn: 0.90-1.10, P≤0.035, S≤ 0.03, Cr≤0.24, Ni≤0.30, Cu≤0.30.

As a seventh preferred solution of the present invention, the upper surface of the pre-compression cover is in close contact with the inclined section of the elastic element, and the lower surface of the pre-compression cover is in close contact with the base, and the pre-compression cover is movable in the vertical direction.

As the eighth preferred solution of the present invention, the shock-absorbing seat includes an integrally cast bottom plate, a buffer plate and a corrosion-resistant column, the buffer plate is arranged on the bottom plate, and several strips are arranged on the bottom plate and the buffer plate. The main reinforcement of the transverse bottom plate and the longitudinal bottom plate stirrup; the anti-corrosion column runs through the center of the bottom plate and the buffer plate. Bolts for fixing the equipment are provided; the lower end of the bottom plate is provided with a vertical anchor rod.

Compared with the closest prior art, the technical solution provided by the present invention has the following excellent effects:

(1) The interaction between the elastic element and the friction element in the shock-absorbing and isolating device of the present invention provides sufficient frictional damping and effectively reduces the seismic response of high-voltage electrical equipment.

(2) The shock-absorbing seat and the shock-absorbing frame are used together in the present invention, which greatly improves the stability of high-voltage electrical equipment in earthquakes.

(3) The sensor of the present invention can sense the disaster situation of high-voltage electrical equipment in an earthquake in real time.

(4) The shock-absorbing and isolating device of the present invention has simple structure, reasonable design, good shock-absorbing effect, and can effectively control the vibration amplitude of the superstructure during an earthquake.

(5) The shock-absorbing and isolating device of the present invention is widely applicable to electric porcelain bracket equipment in substations, such as lightning arresters, disconnectors, circuit breakers, post insulators, etc., and can also be applied to shock-isolation and shock-absorbing measures for other industrial equipment.

Description of drawings

Fig. 1 is the schematic diagram of shock-absorbing and isolating device for high-voltage electrical equipment of the present invention

Fig. 2 is the schematic diagram of the use of the high-voltage electrical equipment shock-absorbing and isolating device of the present invention

In the figure: 1-cover; 2-elastic element; 3-connection plate; 4-pre-compressed cover; 5-outer connection seat; 6-base; 7-friction element; Support frame; 11-reinforcement cage; 12-buffer plate; 13-bottom plate; 14-anchor; 15-concrete column; 16-protective shell; 17-connecting rod

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , but not to limit the scope of the present invention.

As shown in Figure 2, the high-voltage electrical equipment vibration isolation device of the present invention includes a support frame 10, a shock absorption seat, and a shock absorption frame, and the shock absorption frame is arranged on the support frame 10, and the support frame 10 is arranged on the shock absorber.

The shock absorber includes an integrally casted base plate 13, a buffer plate 12 and a corrosion-resistant column. The buffer plate 12 is arranged on the base plate 13, and several transverse main ribs of the base plate are arranged on the base plate 13 and the buffer plate 12. and longitudinal floor stirrups; the anti-corrosion column runs through the center of the bottom plate 13 and the buffer plate 12, and the anti-corrosion column includes a concrete column 15, a steel cage 11 and a protective shell 16 arranged in sequence from the inside to the outside, and the anti-corrosion column Bolts for fixing the equipment are arranged on the top of the column; a vertically arranged anchor rod 14 is arranged at the lower end of the bottom plate.

The concrete used in the concrete column 15 is made of the following components by mass percentage: 8% to 11% of cement, 7% to 8% of mineral admixtures, 32% to 36% of medium sand, gravel 42%-55% for water, 7%-9% for water, 0.6%-0.7% for preservatives, and 0.1%-0.2% for naphthalene-based water reducers.

The anti-corrosion mortar includes cement, mineral admixture, ultra-fine sand, fiber, shrinkage reducing agent, naphthalene-based water reducer, and the mass percentage of each component material is: 25% of cement, 18% of mineral admixture, special Fine sand is 45%, water is 10%, fiber is 0.23%, shrinkage reducing agent is 0.7%, and naphthalene-based water reducer is 0.7%.

As shown in Figure 1, the shock-absorbing frame includes a cover 1, a base 6, an outer connecting seat 5, an elastic element 2, a connecting plate 3, a connecting rod 17, a pre-compression cover 4 and an inner wall of the outer connecting seat. The friction member 7, the whole device is a cylindrical structure. The connecting rod 17 is arranged at the axial position of the cover 1, the cover 1 is movable in the vertical direction, the upper surface of the connecting rod 17 is higher than the upper surface of the cover 1, and the upper surface of the cover 1 is higher than The upper surface of the outer connecting seat 5, the side surface of the base 6 is attached to the inner wall of the outer connecting seat 5, the bottom surface of the base 6 and the outer connecting seat 5 are on a straight line, and the connecting plate 3 is perpendicular to the The connecting rod 17 is directly connected with it. The upper surface of the pre-compression cover 4 is closely connected to the inclined section of the elastic element 2, and its lower surface is close to the base. The sides of the pre-compression cover 4 are respectively connected to the connecting rod 17 and the outer connection seat 5. The pre-compression cover 4 is movable in the vertical direction. The pre-tightening force of the elastic element 2 is changed by adjusting the pre-tightening cover 4 .

The elastic element 2 is composed of a horizontal section perpendicular to the connecting rod 17 and connected to the outer wall of the connecting rod 17 and an inclined section having a certain inclination angle with the horizontal direction, and the horizontal section is fixedly connected with the inclined section. Both the horizontal section and the inclined section of the elastic element 2 are of hexahedral structure; the elastic elements 2 whose sides of the horizontal section are attached to each other and have the same inclination angle of the inclined section form an elastic unit; A group of elastic units 2 forms a friction unit, and the connecting plate 3 separates each friction unit, and the vibration-absorbing and isolating device includes at least two groups of friction units.

The outer wall of the outer connection seat 5 is provided with a sensor 8, the sensor 8 is a displacement sensor and a wind speed sensor, and the sensor 8 can sense the disaster situation of the high-voltage electrical equipment in real time.

The friction element 7 is a steel wire pad.

The elastic element 2 is made of the following elements in mass percentage: C: 0.50-0.65, Si: 0.18-0.38, Mn: 0.90-1.10, P≤0.035, S≤0.03, Cr≤0.24, Ni≤ 0.30, Cu≤0.30.

During an earthquake, the elastic elements 2 are compressed and slide relative to each other to generate frictional damping, and the mechanical energy of the earthquake is converted into heat energy and consumed.

Wherein, the thickness t of the elastic element 2 is 1.25-4 mm; the angle a between the inclined section of the elastic element and the horizontal direction is 2-5 degrees; the smoothness of the contact surfaces of the elastic elements is higher than 3.2.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments undergo changes, modifications and equivalent replacements, but these changes, modifications or equivalent replacements are all within the protection scope of the pending claims.

Claims (9)

1. a kind of high voltage electric equipment seismic isolation device, the seismic isolation device includes supporting rack, cushion socket and damping framework, The damping framework includes lid, pedestal, outer connecting seat, elastic element, terminal pad, connecting rod, pre-pressing lid and is set to described outer The friction member of connecting seat inner wall, which is characterized in that the elastic element by perpendicular to the connecting rod and with outside the connecting rod The horizontal segment and formed from the horizontal by the tilting section at certain inclination angle that wall is connected, the horizontal segment is fixed with tilting section to be connected It connects.

2. seismic isolation device as described in claim 1, which is characterized in that the horizontal segment of the elastic element is with tilting section Hexahedron structure；The horizontal segment side mutually fits and the identical elastic element composition Flexible element in tilting section inclination angle；It is horizontal Two groups of longitudinally connected and oppositely arranged tilting section Flexible elements of section form a friction element.

3. seismic isolation device as claimed in claim 2, which is characterized in that the terminal pad is perpendicular to the connecting rod and separation Each friction element, the seismic isolation device include at least two groups friction element.

4. seismic isolation device as described in claim 1, which is characterized in that the lid moves in the vertical direction, the lid Upper surface is higher than the outer connecting seat upper surface, and the connecting rod is higher than the cap upper surface.

5. seismic isolation device as described in claim 1, which is characterized in that the outer connecting seat outer wall be equipped with displacement sensor and Air velocity transducer.

6. seismic isolation device as described in claim 1, which is characterized in that the friction element is wire mattress.

7. seismic isolation device as claimed in claim 2, which is characterized in that the elastic element is by following based on quality percentage Element is made：C：0.50-0.65,Si：0.18~0.38, Mn：0.90~1.10, P≤0.035, S≤0.03, Cr≤0.24, Ni ≤0.30、Cu≤0.30。

8. seismic isolation device as described in claim 1, which is characterized in that the pre-pressing cap upper surface is close to the elasticity member The pedestal is close in the tilting section of part, lower surface, and the pre-pressing lid moves in the vertical direction.

9. seismic isolation device as described in claim 1, which is characterized in that the cushion socket includes the bottom of integrated moulding by casting Plate, buffer board and corrosion resistant column, the buffer board are set on bottom plate, and several cross are both provided on the bottom plate and buffer board To bottom plate main reinforcement and longitudinal base plate stirrup；The corrosion resistant column runs through the center of bottom plate and buffer board, and the corrosion resistant column includes Concrete column, steel reinforcement cage and the protective shell set gradually from the inside to surface, the corrosion resistant column top are provided with fixed equipment Bolt；The bottom plate lower end is equipped with the anchor pole being vertically arranged.