CN112196943A - Suspension insulator connecting device for improving shock resistance of converter valve tower - Google Patents
Suspension insulator connecting device for improving shock resistance of converter valve tower Download PDFInfo
- Publication number
- CN112196943A CN112196943A CN202011108533.3A CN202011108533A CN112196943A CN 112196943 A CN112196943 A CN 112196943A CN 202011108533 A CN202011108533 A CN 202011108533A CN 112196943 A CN112196943 A CN 112196943A
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- sleeve
- spherical hinge
- valve tower
- suspension insulator
- connecting rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a suspension insulator connecting device for improving the shock resistance of a converter valve tower, which is arranged at the joint of the suspension insulator of the converter valve tower and a valve hall roof truss and comprises a spherical hinge screw rod, a ball head, a spherical hinge base, a spherical hinge bottom plate, a sleeve, a connecting rod and an upper spring and a lower spring in the sleeve; the ball hinge is connected with the valve hall steel hanger, the sleeve is fixed on the ball hinge base through the ball hinge bottom plate, the connecting rod penetrates through the sleeve, springs are arranged on the upper side and the lower side of the part, located in the sleeve, of the connecting rod, a joint with a reserved bolt hole is arranged at the bottom of the lower section rod of the connecting rod, and the lower section rod of the connecting rod is connected with the valve tower suspension insulator through a bolt. The device can effectively control the vibration of the converter valve tower under the action of an earthquake, avoids the elastic rebound phenomenon of the converter valve tower, and has the characteristics of simple structure, easy installation, low manufacturing cost, no influence on the normal electrical function of equipment and no occupation of a ground area.
Description
Technical Field
The invention relates to the technical field of converter station equipment, in particular to a suspension insulator connecting device for improving the shock resistance of a converter valve tower
Background
The electric power system is an important component of a large complex lifeline system, and once the electric power system is damaged in an intense earthquake, the whole society can be directly paralyzed. The power equipment suffers from serious damage in the earthquakes over the years, the earthquake-resistant performance of the power equipment is directly related to the safe operation of a power system, and important research is needed. As core equipment in direct current transmission engineering, the anti-seismic performance of valve halls and valve tower structures of a converter station is a key for ensuring safe and reliable operation of a direct current transmission system.
On one hand, the converter valve tower is one of the most important devices of the high-voltage direct-current transmission system, and the anti-seismic performance of the converter valve determines whether the transmission system can run safely and reliably under the action of an earthquake; on the other hand, the converter valve tower is expensive, and generally, the price of the converter valve accounts for about one fourth of the total price of the whole equipment of the substation. The safe operation of the converter valve tower in the earthquake is very critical, and the anti-seismic performance of the converter valve tower needs to be focused.
The installation of converter valve tower generally adopts suspension structure, and the converter valve tower adopts suspension insulator articulated suspension to hang on the steel gallows in steel construction valve room. The structural form can reduce the stress response of the valve tower under the earthquake, but the mass pendulum-like system can cause the valve tower to generate excessive displacement. In addition, the acceleration response of the valve tower during an earthquake is increased as the valve hall has an amplifying effect on the earthquake action. The existing research shows that the vertical response of the valve tower is rapidly increased in a short time, a bounce effect is generated between valve layers, and the suspension insulator may generate pressure in the process, so that the suspension insulator is subjected to pressure instability. In addition, half of the existing suspension insulator hinged connection is a double-U-shaped ring buckle, the rotation freedom degree of the connecting hardware fitting is limited, and the connecting hardware fitting does not belong to the true hinged connection. Due to the randomness of the direction of the earthquake, the double U-shaped ring buckle connection may cause additional stress load to the insulator.
In the current vibration reduction control technical scheme of the converter valve tower, a spring damper is adopted to stretch the converter valve tower and the ground so as to reduce the possibility of the occurrence of the elastic rebound phenomenon and limit the displacement response of the converter valve tower. However, in this scheme, the requirement on the internal space of the valve hall is high, the converter valve and the interior of the valve hall need to be modified, and the cost and the technical difficulty are high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a suspension insulator connecting device for improving the shock resistance of a converter valve tower.
The invention is realized by the following technical scheme: a suspension insulator connecting device for improving the anti-seismic performance of a converter valve tower is arranged at the joint of the suspension insulator of the converter valve tower and a valve hall roof truss and comprises a spherical hinge, a spherical hinge bottom plate, a sleeve, a connecting rod and an upper spring and a lower spring in the sleeve; the ball head is directly connected with a steel hanger on the valve hall roof truss through a spherical hinge screw rod; bolt holes are reserved in the upper edges of the spherical hinge base and the sleeve, and the spherical hinge base and the sleeve are connected into a whole through bolts and the spherical hinge bottom plate; the connecting rod passes through the sleeve, the springs are arranged on the upper side and the lower side of the part, located in the sleeve, of the connecting rod, a joint with a reserved bolt hole is arranged at the bottom of the lower section rod of the connecting rod, and the connecting rod is connected with a valve tower suspension insulator through a bolt.
The ball head and the spherical hinge screw rod are designed integrally, and the spherical hinge screw rod is directly installed on the valve hall steel hanger after the ball head penetrates through the spherical hinge base. Bolt holes are reserved in the lower surface of the spherical hinge base, the hole positions correspond to the bolt holes in the spherical hinge base plate, and the spherical hinge base plate can be fixed on the spherical hinge base through the bolts.
The sleeve is made of integrated cast aluminum, an extension platform is designed at the upper edge of the sleeve, bolt holes are reserved in the extension platform, and the bolt holes correspond to the hole holes in the spherical hinge bottom plate. After the spherical hinge is installed, the spherical hinge can be connected with the sleeve through the bolt.
The connecting rod adopts the rod of non-uniform cross section, and upper segment pole diameter equals the sleeve internal diameter, and lower section pole diameter equals sleeve lower extreme trompil diameter, and the connecting rod can be at sleeve axis direction relative movement. The bottom of the lower section of the connecting rod is connected with a reserved bolt hole, and the connecting rod can be connected with a valve tower suspension insulator through a bolt. Two groups of springs are arranged in the sleeve, and the springs at the upper end are respectively fixedly connected with the spherical hinge bottom plate and the upper surface of the connecting rod and are positioned in an upper end cavity in the sleeve; and the lower end spring is fixedly connected with the lower surface of the upper section connecting rod and the bottom surface inside the sleeve respectively and is positioned in the lower end space inside the sleeve. Under the loading state of the connecting device, the upper end spring is in a stretching state, and the lower end spring is in a compressing state; the spring stiffness and the damping can be adjusted according to the actual use condition. And solid molybdenum disulfide lubricating coatings or mechanical lubricating oil is arranged in the sleeve and on the surface of the connecting rod.
The springs are arranged in the upper cavity and the lower cavity of the sleeve and the connecting rod, so that the displacement of the valve tower in the vertical direction has certain redundancy, the elastic rebound phenomenon of the valve tower caused by severe vertical earthquake action is avoided, and the risk of pressure instability of the suspension insulator is avoided; second, during spring contraction and extension, a portion of the energy generated by the earthquake may be dissipated, thereby reducing the seismic response of the valve tower.
When the suspension insulator is installed, the spherical hinge is connected with the steel suspension bracket of the valve hall, the sleeve is fixed on the base of the spherical hinge through the bottom plate of the spherical hinge, and finally the suspension insulator is connected with the connecting rod through the bolt. The whole structure is easy to manufacture and convenient to install, and can be widely used for suspension type converter valve towers and other suspension type equipment. The sleeve after the installation is accomplished simultaneously is the seal, and its inner structure can not receive environmental factor to influence, prevents to lead to connecting device's inefficacy and ageing because foreign matter such as insect, dust invade.
Compared with the prior art, the invention has the advantages that: the device can effectively control the vibration of the converter valve tower under the action of an earthquake, avoids the elastic rebound phenomenon of the converter valve tower, has simple structure, is easy to install, has low manufacturing cost, does not influence the normal electrical function of equipment, does not occupy the ground area, does not influence the passing of maintenance vehicles below, is particularly suitable for the ultrahigh-voltage converter valve tower in a high earthquake intensity area, and effectively reduces the vertical earthquake response of the converter valve tower.
Drawings
FIG. 1 is an isometric view of a suspension insulator connection apparatus for improving shock resistance of a converter valve tower;
FIG. 2 is a cross-sectional view of a suspension insulator connection device for improving shock resistance of a converter valve tower;
FIG. 3 is a schematic view of the installation of a suspension insulator connection device for improving the shock resistance of a converter valve tower;
FIG. 4 is a top view of a suspension insulator connection apparatus for improving shock resistance of a converter valve tower;
FIG. 5 is a schematic diagram of bolt hole positions of a base plate of the ball hinge;
reference signs mean: 1. a ball hinge screw; 2. a ball head; 3. a spherical hinge base; 4. a spherical hinge base plate; 5. a bolt; 6. a sleeve; 7. a connecting rod; 8. an upper spring; 9. a lower spring; 10. a valve hall roof truss; 11. a steel hanger; 12. a suspension insulator connecting device; 13. a suspension insulator; 14. and (5) valve towers.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Examples
Referring to fig. 1 to 5, the suspension insulator connecting device for improving the shock resistance of the converter valve tower is installed at the joint of a suspension insulator 13 of the converter valve tower and a valve hall roof truss 10, and comprises a spherical hinge screw rod 1, a ball head 2, a spherical hinge base 3, a spherical hinge bottom plate 4, a bolt 5, a sleeve 6, a connecting rod 7, and an upper end spring 8 and a lower end spring 9 in the sleeve; wherein:
the ball head 2 is directly connected with a steel hanger 11 on the valve hall roof truss 10 through a spherical hinge screw rod 1;
bolt holes are reserved in the upper edges of the spherical hinge base 3 and the sleeve 6, and the spherical hinge base 3 and the sleeve 6 are connected into a whole through bolts and the spherical hinge bottom plate 4;
the connecting rod 7 comprises an upper section and a lower section; the upper section is a cylinder, the outer diameter of the upper section is matched with the inner diameter of the sleeve 6, the top of the upper section is connected with the lower end of the spring 8, and the bottom of the upper section is arranged on the spring 9; the lower section is a thin rod, penetrates through the center of the lower spring 9 and extends out of the sleeve 6 through a through hole at the bottom of the sleeve 6, and the bottom of the lower section of the connecting rod 7 is provided with a joint with a reserved bolt hole and is connected with a valve tower suspension insulator 13 through a bolt.
The ball head 2 and the spherical hinge screw rod 1 are designed integrally, and after the ball head 2 penetrates through the spherical hinge base 3, the spherical hinge screw rod 1 is directly installed on the valve hall steel hanging bracket. Bolt holes are reserved in the lower surface of the spherical hinge base 3, the hole positions correspond to the bolt holes in the spherical hinge base plate 4, and the spherical hinge base plate 4 can be fixed on the spherical hinge base 3 through the bolts.
The sleeve 6 is manufactured by adopting an integrated cast aluminum manufacturing process, an extension platform is designed at the upper edge, bolt holes are reserved, and the bolt holes correspond to the hole holes on the spherical hinge bottom plate 4. After the ball joint is installed, the ball joint can be connected to the sleeve 6 by means of bolts.
The connecting rod 7 adopts rods with non-uniform cross sections, the diameter of the upper section rod is equal to the inner diameter of the sleeve, the diameter of the lower section rod is equal to the diameter of the hole at the lower end of the sleeve 6, and the connecting rod 7 can move relatively in the axial direction of the sleeve 6. The lower section of the connecting rod 7 is connected with a reserved bolt hole at the bottom, and the connecting rod 7 can be connected with a valve tower suspension insulator 13 through a bolt. Two groups of springs are arranged in the sleeve 6, and an upper end spring 8 is fixedly connected with the upper surfaces of the spherical hinge bottom plate 4 and the connecting rod 7 respectively and is positioned in an upper end cavity in the sleeve 6; and the lower end spring 9 is respectively fixedly connected with the lower surface of the upper section of the connecting rod 7 and the bottom surface inside the sleeve 6 and is positioned in the lower end space inside the sleeve 6. In the loading state of the connecting device, the upper end spring 8 is in a stretching state, and the lower end spring 9 is in a compressing state; the gravity of the valve tower 14 is transmitted to the connecting rod 7 through the suspension insulator 13, then transmitted to the sleeve 6 through the upper and lower end springs (8 and 9) by the connecting rod 7, the sleeve 6 is fixedly connected with the spherical hinge, and finally transmitted to the rigid hanger 11 on the valve hall roof truss by the spherical hinge. The spring stiffness and the damping are optimized by performing finite element modeling on the converter valve tower 14 in advance. The inside of the sleeve 6 and the surface of the connecting rod 7 are both provided with solid molybdenum disulfide lubricating coatings or used with mechanical lubricating oil.
The springs are arranged in the upper cavity and the lower cavity of the sleeve 6 and the connecting rod 7, so that the displacement of the valve tower 14 in the vertical direction has certain redundancy, the elastic rebound phenomenon of the valve tower caused by severe vertical earthquake action is avoided, and the risk of the suspension insulator 13 being unstable under pressure is avoided; second, during the contraction and extension of springs 8 and 9, a portion of the energy due to the earthquake may be dissipated, thereby reducing the seismic response of valve tower 14.
The specific installation process of this embodiment is as follows:
(1) a ball head 2 penetrates through a spherical hinge base 3 and is arranged on a valve hall hanging bracket by using a spherical hinge screw rod 1;
(2) fixing the spherical hinge base plate 4 on the spherical hinge base 3 through bolts;
(4) fixing a spring 9 and a spring 8 on the connecting rod 7, inserting the connecting rod 7 into the sleeve 6, and fixing the remaining two ends of the upper spring and the lower spring;
(5) the sleeve 6 is connected with the spherical hinge bottom plate 4 through a bolt;
(6) and connecting the valve tower suspension insulator 13 with the lower end connector of the connecting rod 7.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included in the present claims.
Claims (9)
1. The utility model provides an improve suspension insulator connecting device of converter valve tower anti-seismic performance which characterized in that: the connecting device is arranged at the joint of a converter valve tower suspension insulator (13) and a valve hall roof truss (10);
the connecting device comprises a spherical hinge screw rod, a ball head, a spherical hinge base, a spherical hinge bottom plate, a sleeve, a connecting rod and an upper spring and a lower spring in the sleeve; the ball head is directly connected with a steel hanger on the valve hall roof truss through a spherical hinge screw rod; bolt holes are reserved in the upper edges of the spherical hinge base and the sleeve, and the spherical hinge base and the sleeve are connected into a whole through bolts and the spherical hinge bottom plate; the connecting rod (7) comprises an upper section and a lower section; the upper section is a cylinder, the outer diameter of the upper section is matched with the inner diameter of the sleeve (6), the top of the upper section is connected with the lower end of the spring (8), and the bottom of the upper section is arranged on the spring (9); the lower section is a thin rod, penetrates through the center of the lower spring (9) and extends out of the sleeve (6) through a through hole at the bottom of the sleeve (6), and the bottom of the lower section of the connecting rod (7) is provided with a joint with a reserved bolt hole and is connected with a valve tower suspension insulator (13) through a bolt.
2. The suspension insulator connecting device for improving the shock resistance of the converter valve tower according to claim 1, wherein: the ball head and the spherical hinge screw are designed integrally, and the spherical hinge screw is directly installed on the valve hall steel hanger.
3. The suspension insulator connecting device for improving the shock resistance of the converter valve tower according to claim 1, wherein: bolt holes are reserved in the lower surface of the spherical hinge base, and the hole positions correspond to the bolt holes in the spherical hinge base plate.
4. The suspension insulator connecting device for improving the shock resistance of the converter valve tower according to claim 1, wherein: the sleeve is made of integrated cast aluminum, an extension platform is designed at the upper edge of the sleeve, bolt holes are reserved in the extension platform, and the bolt holes correspond to the hole holes in the spherical hinge bottom plate.
5. The suspension insulator connecting device for improving the shock resistance of the converter valve tower according to claim 1, wherein: the connecting rod adopts the rod of non-uniform cross section, and upper segment pole diameter equals the sleeve internal diameter, and lower section pole diameter equals sleeve lower extreme trompil diameter, and the connecting rod can be at sleeve axis direction relative movement.
6. The suspension insulator connecting device for improving the shock resistance of the converter valve tower according to claim 1, wherein: the upper end spring is fixedly connected with the spherical hinge bottom plate and the upper surface of the connecting rod respectively and is positioned in an upper end cavity in the sleeve; and the lower end spring is fixedly connected with the lower surface of the upper section connecting rod and the bottom surface inside the sleeve respectively and is positioned in the lower end space inside the sleeve.
7. The suspension insulator connecting device for improving the shock resistance of the converter valve tower according to claim 6, wherein: under the load state of the connecting device, the upper end spring is in a stretching state, and the lower end spring is in a compressing state; the spring stiffness and the damping can be adjusted according to the actual use condition.
8. The suspension insulator connecting device for improving the shock resistance of the converter valve tower according to claim 1, wherein: the bottom of the lower section of the connecting rod is connected with a reserved bolt hole, and the connecting rod can be connected with a valve tower suspension insulator through a bolt.
9. The suspension insulator connecting device for improving the shock resistance of the converter valve tower according to claim 1, wherein: and solid molybdenum disulfide lubricating coatings or mechanical lubricating oil are arranged in the sleeve and on the surface of the connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011108533.3A CN112196943A (en) | 2020-10-16 | 2020-10-16 | Suspension insulator connecting device for improving shock resistance of converter valve tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011108533.3A CN112196943A (en) | 2020-10-16 | 2020-10-16 | Suspension insulator connecting device for improving shock resistance of converter valve tower |
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| Publication Number | Publication Date |
|---|---|
| CN112196943A true CN112196943A (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011108533.3A Pending CN112196943A (en) | 2020-10-16 | 2020-10-16 | Suspension insulator connecting device for improving shock resistance of converter valve tower |
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| CN (1) | CN112196943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114910371A (en) * | 2022-05-12 | 2022-08-16 | 同济大学 | Pull rod type electric connection structure fatigue loading test device |
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| CN2100521U (en) * | 1990-03-07 | 1992-04-01 | 中国人民解放军第二炮兵工程设计研究所 | Vibration damper |
| CN2665452Y (en) * | 2003-12-10 | 2004-12-22 | 中国船舶重工集团公司第七一九研究所 | Oil damping spring hanger |
| JP2006118288A (en) * | 2004-10-25 | 2006-05-11 | Hashiba Kimio | Base isolation construction method and base isolating member used in base isolation construction method |
| CN201351708Y (en) * | 2008-12-25 | 2009-11-25 | 柳平波 | Shock absorber with ball head structure |
| CN103671695A (en) * | 2013-12-20 | 2014-03-26 | 河北汉光重工有限责任公司 | Shock-resisting damping mechanism for inertial navigation device |
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| CN108916296A (en) * | 2018-05-11 | 2018-11-30 | 许继电气股份有限公司 | A kind of converter valve valve hall |
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2020
- 2020-10-16 CN CN202011108533.3A patent/CN112196943A/en active Pending
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114910371A (en) * | 2022-05-12 | 2022-08-16 | 同济大学 | Pull rod type electric connection structure fatigue loading test device |
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Application publication date: 20210108 |