CN201656298U - Radial-inflow frictional damping shock absorber - Google Patents
Radial-inflow frictional damping shock absorber Download PDFInfo
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- CN201656298U CN201656298U CN2010201808709U CN201020180870U CN201656298U CN 201656298 U CN201656298 U CN 201656298U CN 2010201808709 U CN2010201808709 U CN 2010201808709U CN 201020180870 U CN201020180870 U CN 201020180870U CN 201656298 U CN201656298 U CN 201656298U
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- frictional damping
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Abstract
The utility model provides a radial-inflow frictional damping shock absorber, which belongs to the field of power transmission and transformation in electric power engineering, and is mainly applicable to earthquake-resistant protective measures on electric porcelain-type bracket equipment in a transformer substation. The electric porcelain-type bracket equipment in the transformer station, which has specific characteristics of the self material, the structure and the load thereof, is very easy to be damaged in an earthquake, so that great direct losses and indirect losses are caused. The conventional shock insulation and absorption product has nonideal shock insulation and absorption effects due to failure to ensure that parameters such as structure dimensions, damping characteristics, restoring force and the like can meet requirement as required. The radial-inflow frictional damping shock absorber is provided with an internal friction ring and an external friction ring. By using the damage and the friction of the internal and the external friction rings, the utility model provides rigidity and damping required in shock insulation and absorption, thereby changing the natural frequency and the damping ratio of the integral structure, and reducing the earthquake response of upper equipment to achieve the effects of shock insulation and absorption and improve the shock resistance of the upper equipment. The utility model with simple structure and reasonable design is an ideal shock insulation and absorption device for electric porcelain-type bracket equipment.
Description
Technical field
The utility model belongs to power engineering specialty power transmission and transformation field, is mainly used in the earthquake isolation measure of transformer station's electroceramics type support kind equipment.
Background technology
Since 12 days Mays in 2008, reflected 8 grades of violent earthquakes of Longmenshan fracture belt and a series of strong aftershocks subsequently that show is the center with the Wenchuan, Sichuan and caused very rare considerable damage for local national economy and infrastructure.Electric power facility is disaster-stricken heavy as one of lifeline engineering.With the Sichuan Electric Power Network is example, is subjected to the condition of a disaster to influence the Sichuan Electric Power Network load and reduces about 4,000,000 kilowatts, and 500kV transformer station stops transport 1, and 220kV transformer station stops transport 5.Power plant and system splittings such as regional river, west, river oil, Jintang, mound temple, Mao County water power group, Eastern Mountain, Dazhou City.Shaanxi, Gansu are also disaster-stricken serious.Contrast the damage of all previous in the past earthquake to electric power facility, the earthquake of the electric power facility especially earthquake of the interior electroceramics type support kind equipment in transformer station station is stood in the breach often.
Electroceramics type support kind equipment comprises circuit breaker, isolating switch, current transformer, voltage transformer, post insulator, lightning arrester etc.In Tangshan Earthquake, the spoilage of circuit breaker is up to 58%, and the spoilage of isolating switch is up to 30%, and the spoilage of lightning arrester is up to 66%.
The main cause of earthquake is:
1, material factor.The insulated part of electroceramics type support kind equipment is formed by porcelain bushing, pottery is a fragile material, plastic deformation ability is very poor, anti-bending strength is very poor, the root of porcelain bushing bears very big moment of flexure during earthquake, make the porcelain bushing undercapacity and rupture,, be out of shape inharmonious fracture and the damage that has strengthened porcelain bushing especially in the junction of porcelain bushing and other materials.Therefore, its earthquake characteristics are the fracture of porcelain bushing root mostly;
2, planform factor.Because the influence of factors such as electric insulation, electroceramics type support kind equipment are not only not only thin but also long, and the top quality is bigger, being simplified to mechanical model is that one one end is fixed, the long freely beam of an end.Root at beam during earthquake will produce very big moment of flexure, cause the fracture of porcelain bushing root;
3, resonance factor.The natural frequency of this kind equipment is close with the excellent frequency of seismic wave in the 1-10Hz scope; Simultaneously, this kind equipment damping value is less, and its material of main part porcelain knob belongs to fragile material, and energy storage capacity is less, therefore very easily because of class resonance influence equipment is wrecked in earthquake.
The domestic cushioning product that is used for electroceramics type support kind equipment mainly contains rubber blanket and lead damper at present.Theory analysis and evidence, the damping effect of these two kinds of products is not ideal, particularly level to vertical under the earthquake acting in conjunction, vertically almost nil to damping effect.
The utility model content
The utility model provides a kind of Energy Dissipating Restraint according to above-mentioned situation, to solve the unfavorable in actual applications problem of existing product.
The utility model is as shown in Figure 1: the substructure of this device is by lower bottom base 8, down outer guide cylinder 7 and down in guide cylinder 4 form, down outer guide cylinder 7 and following interior guide cylinder 4 are threaded with lower bottom base 8.The core component of this device is interior drag ring 5 and external friction ring 6, the friction that interior drag ring 5 and external friction ring 6 are formed is in the substructure that is placed on this device, and in the substructure of this device, pour into butter or graphite, be lubricated with external friction ring 6 with internal drag ring 5.The superstructure of this device goes up outer guide cylinder 3 and last interior guide cylinder 1 composition by upper bed-plate 2, and upward outer guide cylinder 3 and last interior guide cylinder 1 are threaded with upper bed-plate 2.The superstructure of this device is connected and its pre-compressed state of assembly cost device with following outer guide cylinder 7 by last outer guide cylinder 3 with substructure.Become the connecting portion that finished product can be installed in electroceramics type support kind equipment and support after the precommpression of this device.
The beneficial effects of the utility model are:
Distortion and frictional force that interaction in the utility model utilizes between drag ring and the external friction ring produces, necessary elastic-restoring force of damping and damping force are provided, after being installed between electroceramics type support kind equipment and the support, thereby changed the natural frequency of total, the natural frequency of original structure and the excellent frequency of earthquake are separated, reduce the possibility of resonance, reduced the seismic energy that is delivered on the equipment of top effectively, play the effect of protection top equipment; Simultaneously, the damping force that this device provides can be controlled the displacement of superstructure when earthquake well, prevents that superstructure displacement when earthquake is excessive.
1, damping device of the present utility model can reduce to be delivered to the seismic energy on the equipment of top effectively, and damping efficiency meets or exceeds 50%, and the shock resistance that improves equipment is more than one times; Oscillation Amplitude when simultaneously, this device can effectively be controlled the superstructure earthquake;
2, the utility model damping device is simple in structure, and is reasonable in design, and enough spring restoring force and damping forces can be provided, and device size is less simultaneously, is suitable for using in less space mounting;
3, the utility model damping device adopts the precommpression design, can assemble in factory and finish, and is on-the-spot quick and easy for installation;
4, the utility model damping device is widely used in the electroceramics type support kind equipment in the transformer station, as: lightning arrester, isolating switch, circuit breaker, post insulator etc. also go in the earthquake isolation measure of other industrial equipment.
Description of drawings
Fig. 1 is the structural representation of radial inflow frictional damping damping device of the present utility model, among the figure: guide cylinder in 1-is last; The 2-upper bed-plate; The last outer guide cylinder of 3-; The down interior guide cylinder of 4-; Drag ring in the 5-; 6-external friction ring; 7-is outer guide cylinder down; The 8-lower bottom base;
Fig. 2 and Fig. 3 are the user mode figure of radial inflow frictional damping damping device of the present utility model, are example with the lightning arrester, and other support kind equipment is similar.Among the figure: the 1-lightning arrester; 2-attaching nut; 3-radial inflow frictional damping vibration absorber; The 4-connecting plate; 5-radial inflow frictional damping vibration absorber; The 6-support; The 7-connecting bolt
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
The core component of radial inflow frictional damping damping device of the present utility model is interior drag ring 5 and external friction ring 6.As shown in Figure 1, lower bottom base 8, down outer guide cylinder 7 and down interior guide cylinder 4 have been formed substructure of the present utility model, and the friction that interior drag ring 5 and external friction ring 6 are formed is to being placed on wherein; Upper bed-plate 2, last interior guide cylinder 1 and last outer guide cylinder 3 have been formed superstructure of the present utility model; Superstructure of the present utility model is connected back whole frictional damping damping device by last outer guide cylinder 3 with following outer guide cylinder 7 with substructure and forms whole.
Fig. 2 and Fig. 3 are the user mode figure of radial inflow frictional damping damping device of the present utility model, are example with the lightning arrester, and other support kind equipment is similar.As shown in Figures 2 and 3; core component among the user mode figure is a radial inflow frictional damping vibration absorber 3 of the present utility model; come interim in earthquake; radial inflow frictional damping vibration absorber 3 of the present utility model will utilize buffering and the damping action of oneself; reduce the earthquake response of superstructure lightning arrester 1 effectively, thereby play the effect of protection.Superstructure lightning arrester 1 is connected and fixed by bolt and connecting plate 4; On connecting plate 4, be equipped with radial inflow frictional damping vibration absorber 3 and radial inflow frictional damping vibration absorber 5 with underneath, connecting plate 4, radial inflow frictional damping vibration absorber 3 and radial inflow frictional damping vibration absorber 5 link together with support 6 by bolt 7 and nut 2, and radial inflow frictional damping vibration absorber 3 and radial inflow frictional damping vibration absorber 5 just are in the work user mode.
Claims (7)
1. radial inflow frictional damping vibration absorber, be used in the antiseismic protection of power engineering specialty power transmission and transformation field transformer station electroceramics type support kind equipment, it is characterized in that: the substructure of this device is by lower bottom base (8), outer guide cylinder (7) and following interior guide cylinder () are formed down, and outer guide cylinder (7) and down interior guide cylinder (4) are threaded with lower bottom base (8) down; The core component of this device is interior drag ring (5) and external friction ring (6), the friction that interior drag ring (5) and external friction ring (6) are formed is in the substructure that is placed on this device, and in the substructure of this device, pour into butter or graphite, be lubricated with internal drag ring (5) and external friction ring (6); The superstructure of this device goes up outer guide cylinder (3) and last interior guide cylinder (1) composition by upper bed-plate (2), and upward outer guide cylinder (3) and last interior guide cylinder (1) are threaded with upper bed-plate (2); The superstructure of this device is connected and the assembly cost device with following outer guide cylinder (7) by last outer guide cylinder (3) with substructure.
2. radial inflow frictional damping vibration absorber as claimed in claim 1 is characterized in that: down outer guide cylinder (7), down in guide cylinder (4), go up outer guide cylinder (3), upward interior guide cylinder (1) and be cylindric, an end has connecting thread.
3. radial inflow frictional damping vibration absorber as claimed in claim 1 is characterized in that: lower bottom base (8), upper bed-plate (2) are cylindric, and there is connecting thread the end.
4. radial inflow frictional damping vibration absorber as claimed in claim 1 is characterized in that: interior drag ring (5) is the annulus of constant slope for interior anchor ring.
5. radial inflow frictional damping vibration absorber as claimed in claim 1 is characterized in that: external friction ring (6) is the annulus of constant slope for interior anchor ring.
6. radial inflow frictional damping vibration absorber as claimed in claim 1 is characterized in that: interior drag ring (5) is right with the friction that external friction ring (6) is formed, and is placed in the substructure, middle perfusion butter or graphite.
7. radial inflow frictional damping vibration absorber as claimed in claim 1 is characterized in that: outer guide cylinder (7) lower end has inside bulge loop, goes up outer guide cylinder (3) upper end and has outside bulge loop, by the contact of these two bulge loops whole device assembling is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201808709U CN201656298U (en) | 2010-04-29 | 2010-04-29 | Radial-inflow frictional damping shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201808709U CN201656298U (en) | 2010-04-29 | 2010-04-29 | Radial-inflow frictional damping shock absorber |
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| Publication Number | Publication Date |
|---|---|
| CN201656298U true CN201656298U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201808709U Expired - Lifetime CN201656298U (en) | 2010-04-29 | 2010-04-29 | Radial-inflow frictional damping shock absorber |
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| Country | Link |
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| CN (1) | CN201656298U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221061A (en) * | 2011-06-16 | 2011-10-19 | 中国电力科学研究院 | Rubber spring damping shock absorber |
| CN102221062A (en) * | 2011-06-16 | 2011-10-19 | 中国电力科学研究院 | Metal rubber damping shock absorber |
| CN108799389A (en) * | 2017-04-26 | 2018-11-13 | 全球能源互联网研究院有限公司 | A kind of high voltage electric equipment seismic isolation device |
| CN110350459A (en) * | 2019-07-10 | 2019-10-18 | 国网四川省电力公司电力科学研究院 | A kind of strain tower of transmission line damper and its mounting structure |
-
2010
- 2010-04-29 CN CN2010201808709U patent/CN201656298U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221061A (en) * | 2011-06-16 | 2011-10-19 | 中国电力科学研究院 | Rubber spring damping shock absorber |
| CN102221062A (en) * | 2011-06-16 | 2011-10-19 | 中国电力科学研究院 | Metal rubber damping shock absorber |
| CN108799389A (en) * | 2017-04-26 | 2018-11-13 | 全球能源互联网研究院有限公司 | A kind of high voltage electric equipment seismic isolation device |
| CN110350459A (en) * | 2019-07-10 | 2019-10-18 | 国网四川省电力公司电力科学研究院 | A kind of strain tower of transmission line damper and its mounting structure |
| CN110350459B (en) * | 2019-07-10 | 2021-06-04 | 国网四川省电力公司电力科学研究院 | Transmission line strain insulator tower damping damper and mounting structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
|
| CX01 | Expiry of patent term |