CN110957689B - Power cable prevents waving device - Google Patents
Power cable prevents waving device Download PDFInfo
- Publication number
- CN110957689B CN110957689B CN201911314723.8A CN201911314723A CN110957689B CN 110957689 B CN110957689 B CN 110957689B CN 201911314723 A CN201911314723 A CN 201911314723A CN 110957689 B CN110957689 B CN 110957689B
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- CN
- China
- Prior art keywords
- hydraulic damper
- pin head
- power cable
- spring
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/54—Arrangements for attachment
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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
- F16F2230/00—Purpose; Design features
- F16F2230/14—Ball joints; Spherical support elements
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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
- F16F2232/00—Nature of movement
- F16F2232/08—Linear
Abstract
The invention discloses a power cable anti-galloping device which comprises a left pin head, a left buffering connecting body, a protective cover, a left buffering connecting cover, a left spring, a hydraulic damper, a right nut, a right spring, a right buffering connecting cover and a right pin head. According to the invention, through an innovative structural design, when the power cable is waved, on one hand, in the power cable galloping prevention device, working oil in the left and right working cavities of the hydraulic damper flows relatively through the damping flow channel to generate damping force, so that the damping effect is achieved; on the other hand, when the power cable is subjected to impact load, the left pin head and the right pin head of the power cable anti-galloping device reduce the peak value of the impact load through stretching or compressing the springs, and the stress condition of the power cable is improved. The invention can greatly improve the buffering and damping performance of the power cable, fully reduce the risk of power accidents, prolong the service life of power equipment and have wide application prospect.
Description
Technical Field
The invention relates to a buffering and damping device, in particular to a power cable anti-galloping device, and belongs to the field of buffering, damping and power facilities.
Background
With the continuous development of the power industry in China, the scale of power transmission through power cables is also continuously enlarged. In power transmission equipment, it is common that a power cable is erected on a power tower by being connected with an insulator. Because the height of the power iron tower is continuously increased, the influence of wind power is more obvious, particularly, the power cable can be waved, the waved power cable can have double effects of impact and vibration on the insulator, the power iron tower and the power cable, the service life of power equipment is shortened, and meanwhile, a huge risk of power accidents exists.
Disclosure of Invention
In order to overcome the defects, the invention provides a power cable galloping prevention device.
The technical scheme of the invention is as follows:
a power cable anti-galloping device comprises a left pin head, a left buffer connecting body, a protective cover, a left buffer connecting cover, a left spring, a hydraulic damper, a right nut, a right spring, a right buffer connecting cover and a right pin head;
the left buffer connecting body is sequentially provided with a left buffer connecting body first step, a left buffer connecting body second step, a left buffer connecting body third step and a left buffer connecting body fourth step from left to right; threads are machined on the periphery of the first step of the left buffering connecting body;
the hydraulic damper comprises a hydraulic damper cylinder barrel, a hydraulic damper left end cover, a hydraulic damper right connecting cylinder, a hydraulic damper piston, a hydraulic damper left piston rod and a hydraulic damper right piston rod; a damping flow channel is formed in the hydraulic damper piston, left piston rod threads are machined on the outer portion of the left end of the left piston rod of the hydraulic damper, a left piston rod spring hole seat is machined in the left end of the left piston rod of the hydraulic damper, a hydraulic damper left working cavity C and a hydraulic damper right working cavity D are formed in the hydraulic damper, and working oil is filled in the hydraulic damper left working cavity C and the hydraulic damper right working cavity D; and a first right pin head step, a second right pin head step and a third right pin head step are sequentially processed from left to right of the right pin head, and the periphery of the first right pin head step is processed.
One end of a power cable anti-galloping device is connected to a power cable, the other end of the power cable anti-galloping device is connected to an iron tower through an insulator, and axial relative movement can be achieved between a left pin head and a right pin head of the power cable anti-galloping device.
The power cable is prevented from swinging and has two states of impact and vibration.
When the power cable anti-galloping device is subjected to impact tensile load, tensile motion is formed between the left pin head and the right pin head, the impact tensile load acts on the right pin head and is transmitted to the hydraulic damper, the hydraulic damper instantly forms large damping force due to high impact speed, and when the damping force of the hydraulic damper is larger than the pre-compression force of the right spring, the right pin head overcomes the pre-compression force of the right spring and further compresses the right spring to form rightward motion relative to the left pin head, so that the acting time of the impact tensile load is prolonged, and the peak value of the impact tensile load is reduced; when the power cable anti-galloping device is subjected to impact compression load, compression motion is formed between the left pin head and the right pin head, the impact compression load acts on the left pin head and is transmitted to the hydraulic damper, the hydraulic damper instantly forms large damping force due to large impact speed, when the damping force of the hydraulic damper is larger than the pre-compression force of the left spring, the left pin head overcomes the pre-compression force of the left spring, the left spring is further compressed, rightward motion relative to the right pin head is formed, the acting time of the impact compression load is prolonged, and the peak value of the impact compression load is reduced; that is to say, when the power cable anti-galloping device is subjected to impact tensile load, the right pin head overcomes the pre-compression force of the right spring, the right spring is further compressed, rightward movement relative to the left pin head is formed, the action time of the impact tensile load is prolonged, and the peak value of the impact tensile load is reduced; when the power cable anti-galloping device is under impact compression load, the left pin head overcomes the pre-compression force of the left spring, the left spring is further compressed, rightward movement relative to the right pin head is formed, the acting time of the impact compression load is prolonged, and the peak value of the impact compression load is reduced.
When a power cable anti-galloping device produces vibration, when vibration load does not reach the precompression power of left spring and right spring, vibration between left pin head and the right pin head can be transmitted for the hydraulic damper, form relative axial motion between hydraulic damper piston and the hydraulic damper cylinder, the working fluid in hydraulic damper left working chamber C and the hydraulic damper right working chamber D realizes relative flow through the damping runner, the working fluid forms the damping in the damping runner, produce the damping force, act on hydraulic damper piston and hydraulic damper cylinder, play the cushioning effect.
A power cable anti-galloping device can buffer and absorb shock of a power cable at the same time.
The invention has the beneficial effects that:
according to the invention, through an innovative structural design, when the power cable is waved, on one hand, in the power cable galloping prevention device, working oil in the left and right working cavities of the hydraulic damper flows relatively through the damping flow channel to generate damping force, so that the damping effect is achieved; on the other hand, when the power cable is subjected to impact load, the left pin head and the right pin head of the power cable anti-galloping device reduce the peak value of the impact load through stretching or compressing the springs, and the stress condition of the power cable is improved. The invention can greatly improve the buffering and shock-absorbing performance of the power cable, fully reduce the risk of power accidents, prolong the service life of power equipment and has wide application prospect.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are given in the accompanying drawings.
A power cable anti-galloping device comprises a left pin head 1, a left buffer connecting body 2, a protective cover 3, a left buffer connecting cover 4, a left spring 5, a hydraulic damper 6, a right nut 7, a right spring 8, a right buffer connecting cover 9 and a right pin head 10;
the left buffer connecting body 2 is sequentially provided with a left buffer connecting body first step 2-1, a left buffer connecting body second step 2-2, a left buffer connecting body third step 2-3 and a left buffer connecting body fourth step 2-4 from left to right; the periphery of the first step 2-1 of the left buffering connecting body is provided with a thread;
the hydraulic damper 6 comprises a hydraulic damper cylinder 6-1, a hydraulic damper left end cover 6-2, a hydraulic damper right end cover 6-3, a hydraulic damper right connecting cylinder 6-4, a hydraulic damper piston 6-5, a hydraulic damper left piston rod 6-7 and a hydraulic damper right piston rod 6-8; a damping flow passage 6-6 is formed in the hydraulic damper piston 6-5, a left piston rod thread 6-9 is machined on the outer portion of the left end of the hydraulic damper left piston rod 6-7, a left piston rod spring hole seat 6-10 is machined in the inner portion of the left end of the hydraulic damper left piston rod 6-7, a hydraulic damper left working cavity C and a hydraulic damper right working cavity D are formed in the hydraulic damper 6, and working oil liquid is filled in the hydraulic damper left working cavity C and the hydraulic damper right working cavity D; the right pin head 10 is sequentially provided with a right pin head first step 10-1, a right pin head second step 10-2 and a right pin head third step 10-3 from left to right, and the periphery of the right pin head first step 10-1 is machined.
One end of a power cable anti-galloping device is connected to a power cable, the other end of the power cable anti-galloping device is connected to an iron tower through an insulator, and axial relative movement can be achieved between a left pin head 1 and a right pin head 10 of the power cable anti-galloping device.
The power cable is prevented from swinging and has two states of impact and vibration.
When the power cable anti-galloping device is subjected to impact tensile load, tensile motion is formed between the left pin head 1 and the right pin head 10, the impact tensile load acts on the right pin head 10 and is transmitted to the hydraulic damper 6, due to the fact that the impact speed is high, the hydraulic damper 6 instantly forms large damping force, when the damping force of the hydraulic damper 6 is larger than the pre-compression force of the right spring 8, the right pin head 10 overcomes the pre-compression force of the right spring 8, the right spring 8 is further compressed, rightward motion relative to the left pin head 1 is formed, the acting time of the impact tensile load is prolonged, and the peak value of the impact tensile load is reduced; when the power cable anti-galloping device is subjected to impact compression load, compression motion is formed between the left pin head 1 and the right pin head 10, the impact compression load acts on the left pin head 1 and is transmitted to the hydraulic damper 6, the hydraulic damper 6 instantly forms large damping force due to large impact speed, and when the damping force of the hydraulic damper 6 is larger than the pre-compression force of the left spring 5, the left pin head 1 overcomes the pre-compression force of the left spring 5, further compresses the left spring 5, forms rightward motion relative to the right pin head 10, prolongs the acting time of the impact compression load, and reduces the peak value of the impact compression load; that is to say, when the power cable anti-galloping device is subjected to impact tensile load, the right pin head 10 overcomes the pre-compression force of the right spring 8, the right spring 8 is further compressed, and rightward movement relative to the left pin head 1 is formed, so that the action time of the impact tensile load is prolonged, and the peak value of the impact tensile load is reduced; when the power cable anti-galloping device is under impact compression load, the left pin head 1 overcomes the pre-compression force of the left spring 5, the left spring 5 is further compressed, rightward movement relative to the right pin head 10 is formed, the acting time of the impact compression load is prolonged, and the peak value of the impact compression load is reduced.
When the anti-galloping device for the power cable vibrates, when vibration load does not reach the precompression force of the left spring 5 and the right spring 8, vibration between the left pin head 1 and the right pin head 10 can be transmitted to the hydraulic damper 6, relative axial motion is formed between the hydraulic damper piston 6-5 and the hydraulic damper cylinder 6-1, working oil in the left working cavity C and the right working cavity D of the hydraulic damper realizes relative flow through the damping flow channel 6-6, the working oil forms damping in the damping flow channel 6-6 to generate damping force, and the damping force acts on the hydraulic damper piston 6-5 and the hydraulic damper cylinder 6-1 to play a role in damping.
A power cable anti-galloping device can buffer and absorb shock of a power cable at the same time.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (4)
1. The utility model provides a power cable prevents waving device which characterized in that: the hydraulic buffer device comprises a left pin head (1), a left buffer connecting body (2), a protective cover (3), a left buffer connecting cover (4), a left spring (5), a hydraulic damper (6), a right nut (7), a right spring (8), a right buffer connecting cover (9) and a right pin head (10);
the left buffer connecting body (2) is sequentially provided with a left buffer connecting body first step (2-1), a left buffer connecting body second step (2-2), a left buffer connecting body third step (2-3) and a left buffer connecting body fourth step (2-4) from left to right; the periphery of the first step (2-1) of the left buffering connecting body is provided with a thread;
the hydraulic damper (6) comprises a hydraulic damper cylinder (6-1), a hydraulic damper left end cover (6-2), a hydraulic damper right end cover (6-3), a hydraulic damper right connecting cylinder (6-4), a hydraulic damper piston (6-5), a hydraulic damper left piston rod (6-7) and a hydraulic damper right piston rod (6-8); a damping flow channel (6-6) is formed in the hydraulic damper piston (6-5), a left piston rod thread (6-9) is machined on the outer portion of the left end of a left piston rod (6-7) of the hydraulic damper, a left piston rod spring hole seat (6-10) is machined in the inner portion of the left end of the left piston rod (6-7) of the hydraulic damper, a left hydraulic damper working cavity C and a right hydraulic damper working cavity D are formed in the hydraulic damper (6), and working oil is filled in the left hydraulic damper working cavity C and the right hydraulic damper working cavity D; the right pin head (10) is sequentially provided with a right pin head first step (10-1), a right pin head second step (10-2) and a right pin head third step (10-3) from left to right, and the periphery of the right pin head first step (10-1) is provided with threads;
the left buffering connecting body (2) is inserted into the left buffering connecting cover (4) from right to left, wherein the left parts of the first step (2-1) and the second step (2-2) of the left buffering connecting body extend out of the left end of the left buffering connecting cover (4), and the left side of the third step (2-3) of the left buffering connecting body tightly abuts against the bottom of the inner side of the left buffering connecting cover (4); the left end of the left spring (5) is sleeved on the fourth step (2-4) of the left buffer connecting body, and the right end of the left spring (5) is inserted into the spring hole seat (6-10) of the left piston rod; the left buffer connecting cover (4) is reliably connected with a left piston rod (6-7) of the hydraulic damper through a left piston rod thread (6-9); the left spring (5) has certain precompression force; the protective cover (3) is sleeved outside the hydraulic damper (6), and the left end of the protective cover (3) is reliably connected with the thread of the first step (2-1) of the left buffering connecting body; the left pin head (1) is reliably connected with the left buffering connecting body (2) through a first step (2-1) of the left buffering connecting body in a threaded manner; the right pin head (10) is inserted into the right buffer connecting cover (9) from right to left, a first right pin head step (10-1) and a second right pin head step (10-2) enter the left inside of the right buffer connecting cover (9), the left side of a third right pin head step (10-3) is tightly propped against the right side of the right buffer connecting cover (9), a right spring (8) is inserted into the left inside of the right buffer connecting cover (9) and sleeved on the second right pin head step (10-2), and the right nut (7) is reliably connected with the right pin head (10) through threads on the periphery of the first right pin head step (10-1); the right spring (8) has a certain precompression force; the left part of the right buffer connecting cover (9) is inserted into the right side of the hydraulic damper right connecting cylinder (6-4), and the right buffer connecting cover (9) and the hydraulic damper right connecting cylinder (6-4) are welded into a whole; the left end of the hydraulic damper right connecting cylinder (6-4) is reliably connected with the hydraulic damper right end cover (6-3).
2. A power cable anti-galloping device according to claim 1, characterized in that: the damping flow channel (6-6) is one of an axial damping flow channel on the piston, an axial spiral damping flow channel on the piston and a damping flow channel in the piston.
3. A power cable anti-galloping device according to claim 1, characterized in that: the left pin head (1), the right pin head (10) and the external pin base are connected in a pin shaft connection mode, a spherical hinge connection mode or a flange connection mode.
4. A power cable anti-galloping device according to claim 1, characterized in that: the left spring (5) and the right spring (8) are one of a cylindrical compression spring, a belleville spring, a rubber elastic body, a nylon elastic body and a polyurethane elastic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314723.8A CN110957689B (en) | 2019-12-19 | 2019-12-19 | Power cable prevents waving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911314723.8A CN110957689B (en) | 2019-12-19 | 2019-12-19 | Power cable prevents waving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110957689A CN110957689A (en) | 2020-04-03 |
| CN110957689B true CN110957689B (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911314723.8A Active CN110957689B (en) | 2019-12-19 | 2019-12-19 | Power cable prevents waving device |
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| Country | Link |
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| CN (1) | CN110957689B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114256796A (en) * | 2020-09-23 | 2022-03-29 | 国网湖北省电力有限公司电力科学研究院 | Hydraulic damping type damping device for preventing wind deflection of phase jumper wire on side of corner tower and using method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2040125A1 (en) * | 1969-08-14 | 1971-03-11 | Burndy Corp | Device for vibration damping of free hanging cables |
| CN107685745A (en) * | 2017-09-12 | 2018-02-13 | 河海大学常州校区 | A kind of vehicle bumper connector |
| CN108953462A (en) * | 2018-07-12 | 2018-12-07 | 河海大学常州校区 | A kind of in-line arrangement hydraulic damper |
| CN108999911A (en) * | 2017-06-06 | 2018-12-14 | 雷科格兰宁有限责任公司 | Fulcrum bar component with combined gas spring and damper |
| CN110416954A (en) * | 2019-08-16 | 2019-11-05 | 国家电网有限公司 | A kind of iron tower of power transmission line waves damping device |
| CN110439956A (en) * | 2019-08-13 | 2019-11-12 | 山东大学 | Energy-consuming device is waved in a kind of inhibition |
-
2019
- 2019-12-19 CN CN201911314723.8A patent/CN110957689B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2040125A1 (en) * | 1969-08-14 | 1971-03-11 | Burndy Corp | Device for vibration damping of free hanging cables |
| CN108999911A (en) * | 2017-06-06 | 2018-12-14 | 雷科格兰宁有限责任公司 | Fulcrum bar component with combined gas spring and damper |
| CN107685745A (en) * | 2017-09-12 | 2018-02-13 | 河海大学常州校区 | A kind of vehicle bumper connector |
| CN108953462A (en) * | 2018-07-12 | 2018-12-07 | 河海大学常州校区 | A kind of in-line arrangement hydraulic damper |
| CN110439956A (en) * | 2019-08-13 | 2019-11-12 | 山东大学 | Energy-consuming device is waved in a kind of inhibition |
| CN110416954A (en) * | 2019-08-16 | 2019-11-05 | 国家电网有限公司 | A kind of iron tower of power transmission line waves damping device |
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| CN110957689A (en) | 2020-04-03 |
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