CN2831397Y - Oil-less anti-shock sulfur hexafluoride gas density relay - Google Patents
Oil-less anti-shock sulfur hexafluoride gas density relay Download PDFInfo
- Publication number
- CN2831397Y CN2831397Y CN 200520030429 CN200520030429U CN2831397Y CN 2831397 Y CN2831397 Y CN 2831397Y CN 200520030429 CN200520030429 CN 200520030429 CN 200520030429 U CN200520030429 U CN 200520030429U CN 2831397 Y CN2831397 Y CN 2831397Y
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- air chamber
- support
- sulfur hexafluoride
- gas density
- oil
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Abstract
The utility model relates to a sulfur hexafluoride gas density relay of an oilless shock resistance type, which can monitor the gas density of sulfur hexafluoride (SF< 6 >) in operation and can ensure the safe operation of gas insulating equipment. The utility model comprises a support, an indicating device arranged on the support, and a driving device which controls the operation of the indicating device, wherein the support is provided with a reference gas chamber and a working gas chamber, and a transmission plate is arranged between the reference gas chamber and the working gas chamber; the transmission plate controls the operation of the indicating device through the driving device, a switching device matched with the transmission plate is arranged on the support and the switching device is led to a junction box through a signal wire. The utility model has the advantages of high precision of temperature compensation, strong contacting force of contacts, high reliability and seepage resistance.
Description
Technical field:
The utility model relates to a kind ofly can monitor operating sulphur hexafluoride (SF
6) gas density, the oil-free vibration-resisting sulfur hexafluoride gas density relay of the safe and reliable operation of assurance air insulating device.
Background technology:
Along with operation of power networks improves constantly sulphur hexafluoride (SF to transformer station with high-voltage electrical equipment job security, reliability, the requirement of non-maintaining property
6) gas is as a kind of insulation, arc-extinguishing medium safely and effectively, be widely used in the high-voltage electrical equipment, and SF
6The insulation of gas and arc extinguishing ability depend on the density of gas, sulphur hexafluoride (SF
6) reduction of gas density, deterioration the insulation property and the arc extinction performance of high-voltage electrical equipment, will bring hidden danger of quality to high-voltage electrical equipment, so must monitoring SF
6The density of gas.In order to monitor operating SF
6Gas density, the safe and reliable operation of assurance air insulating device adopts density monitor to monitor SF usually
6The density of high-voltage electrical equipment, and when gas pressure is low excessively, too high, carry out necessary monitoring, make SF
6Gas density remains in a certain allowed band.According to The Ideal-Gas Equation, the pressure of gas is relevant with its density and temperature, therefore, and SF
6Gas density relay is by detecting SF in the high-voltage electrical equipment sealed air chamber
6The pressure of gas, and give accurate compensation to change the gas pressure change cause by gas temperature, thus make SF
6Gas density relay indicated force value under arbitrary temp is 20 ℃ gas pressure value, and this indicated pressure is only corresponding with gas density, and irrelevant with gas temperature.So, the SF that density monitor is monitored
6The gas density of electric equipment is with SF
6Pressure after gas is temperature compensated represents that the force value during promptly with 20 ℃ is represented.When gas temperature changes, can not cause that the pointer indication changes, can not send warning, block signal, when only leaking (being that gas density changes) at gas, SF
6The pointer indication of gas density relay just can change, and arrives to a certain degree when gas leakage, and move the contact, sends respectively and reports to the police or block signal, thereby realize SF
6The automatic monitoring of gas density.This shows that the accuracy of temperature-compensating will be directly connected to the supervision precision of density monitor, and the reliable switching of contact will directly determine the security reliability of high-voltage electrical equipment operation.
At present, the pointer density monitor that circulates on the market is to utilize the operation principle of bimetallic strip compensation gas to carry out temperature-compensating, realize controlled function by electric contact, utilization charges into the cushioning effect that damping fluid produced of housing and comes damping, to eliminate the impact shock that brings when high-voltage electrical equipment cut-offs, it is small and exquisite to have volume, advantages such as density indicating value intuitive display, but exist the temperature-compensating precision low, the contact contact force is little, and contact capacity is little, the contact short circuit of easily ablating, poor reliability, the damping fluid easy to leak is to the shortcomings such as sealing requirements height of watchcase.
Summary of the invention:
The purpose of this utility model be to overcome the deficiencies in the prior art and provide that a kind of temperature-compensating precision height, contact contact force are big, the oil-free vibration-resisting sulfur hexafluoride gas density relay of good reliability, antiseep.
The purpose of this utility model is achieved like this: comprise support, be arranged on the indicating device on the support, the drive unit of control indicating device work, support is provided with benchmark air chamber and work air chamber, between benchmark air chamber and work air chamber, be provided with driver plate, driver plate is by the work of driving device controls indicating device, the switching device that matches with driver plate is installed on support, and switching device is guided on the terminal box by holding wire.Described drive unit is a gear mechanism, described indicating device comprises the dial plate that is arranged on the support, is arranged on the pointer on the dial plate, driver plate is connected with gear mechanism by push rod, and the pointer on the dial plate is installed on the central shaft of gear mechanism, and gear mechanism drives pointer and rotates.Described benchmark air chamber and work air chamber are a kind of flexible air chambers.Between benchmark air chamber and work air chamber driver plate is set, and the three is installed between the upper and lower of support, the while driver plate is the pull switch device directly.
The utlity model has following advantage:
1, employing is carried out temperature-compensating with the operation principle of gas compensation gas, the compensation precision height, and realized that the gamut of working range compensates;
2, driver plate directly promotes high-quality sensitive switch, realizes the on-off function of control signal, has both increased contact contact force and contact capacity, strong shock resistance, and the electric current shake when having avoided the contact to switch on has again improved useful life and has cut-off reliability;
3, Du Te anti-seismic structure has been exempted the silicone oil damping, can reach 500m/s in impact acceleration
2Down work of installing environmental conditions, and avoided many shortcomings of oil-filled vibration-proof structure on the structure at all;
4, improved the minimum resolution of pointer indication, improved the display precision of instrument, reduced the interference between the contact effectively, the density indicating value is directly perceived;
5, control section and display part are based on the separate of same benchmark, have avoided the phase mutual interference, and assembly technology is simple;
6, adopt the head and the tail stopping means, instrument is had the better protection effect.
Description of drawings:
Fig. 1 is the front view of internal structure of the present utility model.
Fig. 2 be the utility model when normal operating conditions, the left view of internal structure.
Fig. 3 be the utility model report to the police, during blocking, the left view of internal structure.
Embodiment:
As shown in Figure 1, 2, 3, a kind of oil-free vibration-resisting sulfur hexafluoride (SF
6) gas density relay, comprise support 8, be arranged on the indicating device on the support 8, the drive unit of control indicating device work, support 8 is provided with benchmark air chamber 7 and work air chamber 5, between benchmark air chamber 7 and work air chamber 5, be provided with driver plate 6, driver plate 6 is by the work of driving device controls indicating device, the switching device 9 that matches with driver plate 6 is installed on support 8, and switching device 9 is guided on the terminal box by holding wire.
Described drive unit is a gear mechanism 3, described indicating device comprises the dial plate 2 that is arranged on the support 8, is arranged on the pointer on the dial plate 2, driver plate 6 is connected with gear mechanism 3 by push rod 4, pointer 1 on the dial plate 2 is installed on the central shaft of gear mechanism 3, and gear mechanism 3 drives pointer 1 and rotates.
Described benchmark air chamber 7 and work air chamber 5 are a kind of flexible air chambers.Above-mentioned each parts can be packed in the watchcase.
During installation, between benchmark air chamber 7 and work air chamber 5, be provided with driver plate 6, link up with support 8, switching device 9 is installed on the support 8, and push rod 4 is installed on driver plate 6, and driver plate 6 links to each other the driving wheel of gear mechanism 3 with driver plate 6, dial plate 2 is installed on support 8, pointer 1 is installed on the central shaft of gear mechanism 3, and the holding wire of switching device 9 is guided on the terminal box, in the watchcase of packing into after integral installation is intact.
Charge into a certain amount of gas in advance and form counter balance pocket in benchmark air chamber 7, during operation, work air chamber 5 links to each other with the annular seal space of high-voltage electrical equipment, works as SF
6When gas entered work air chamber 5, under the action of pressure of both sides, driver plate 6 moved up and down, and its displacement drives pointer 1 and demonstrates density value at dial plate 2 after push rod 4, gear mechanism 3 transmissions are amplified.When variation of ambient temperature, gas pressure respective change in the work air chamber 5, the trend that makes driver plate 6 have upwards (or downwards) to move, but because respective change also takes place in the gas pressure in the benchmark air chamber 7, make driver plate 6 that (or upwards) mobile trend be arranged downwards, the result of the two comprehensive function remains unchanged driver plate 6, and pointer 1 indication does not change; When since the annular seal space of high-voltage electrical equipment in SF
6Leaking appears in gas, and when promptly density value descended, the force value in the benchmark air chamber 7 was higher than the force value of work air chamber 5, and driver plate 6 moves down, and push rod 4, gear mechanism 3 drive pointer 1, and the density indication diminishes.When reducing to alarm pressure, driver plate 6 pull switch devices 9, contacting, output low pressure alarming signal; When reducing to locking pressure, driver plate 6 pull switch devices 10, contacting, output low-voltage dead lock signal, system's locking, thus realized the safe operation of electric equipment is protected.
Claims (5)
1, a kind of oil-free vibration-resisting sulfur hexafluoride gas density relay, comprise support (8), be arranged on the indicating device on the support (8), the drive unit of control indicating device work, it is characterized in that: support (8) is provided with benchmark air chamber (7) and work air chamber (5), between benchmark air chamber (7) and work air chamber (5), be provided with driver plate (6), driver plate
(6) by the work of driving device controls indicating device, the switching device (9) that matches with driver plate (6) is installed on support (8), switching device (9) is guided on the terminal box by holding wire.
2, a kind of oil-free vibration-resisting sulfur hexafluoride gas density relay according to claim 1, it is characterized in that: described drive unit is gear mechanism (3), described indicating device comprises the dial plate (2) that is arranged on the support (8), is arranged on the pointer on the dial plate (2), driver plate (6) is connected with gear mechanism (3) by push rod (4), pointer (1) on the dial plate (2) is installed on the central shaft of gear mechanism (3), and gear mechanism (3) drives pointer (1) and rotates.
3, a kind of oil-free vibration-resisting sulfur hexafluoride gas density relay according to claim 1 and 2 is characterized in that: described benchmark air chamber (7) and work air chamber (5) are a kind of flexible air chambers.
4, a kind of oil-free vibration-resisting sulfur hexafluoride gas density relay according to claim 3 is characterized in that: above-mentioned pointer (1), dial plate (2), gear mechanism (3), push rod (4), work air chamber (5), driver plate (6) and benchmark air chamber (7) can be packed in the watchcase.
5, a kind of oil-free vibration-resisting sulfur hexafluoride gas density relay according to claim 4, it is characterized in that: benchmark air chamber (7) is to charge into a certain amount of gas in it in advance to form the balance closed chamber, and work air chamber (5) links to each other with the annular seal space of high-voltage electrical equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520030429 CN2831397Y (en) | 2005-04-11 | 2005-04-11 | Oil-less anti-shock sulfur hexafluoride gas density relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520030429 CN2831397Y (en) | 2005-04-11 | 2005-04-11 | Oil-less anti-shock sulfur hexafluoride gas density relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2831397Y true CN2831397Y (en) | 2006-10-25 |
Family
ID=37136325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520030429 Expired - Lifetime CN2831397Y (en) | 2005-04-11 | 2005-04-11 | Oil-less anti-shock sulfur hexafluoride gas density relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2831397Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364024C (en) * | 2005-04-11 | 2008-01-23 | 平高集团有限公司 | Oil-free vibration-resisting sulfur hexafluoride gas density relay |
-
2005
- 2005-04-11 CN CN 200520030429 patent/CN2831397Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364024C (en) * | 2005-04-11 | 2008-01-23 | 平高集团有限公司 | Oil-free vibration-resisting sulfur hexafluoride gas density relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080123 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080123 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Weihai Eagle Electric Appliance Factory Assignor: Pinggao Group Co., Ltd. Contract fulfillment period: 2008.10.2 to 2013.10.1 Contract record no.: 2008370000145 Denomination of utility model: Oil-free vibration-resisting sulfur hexafluoride gas density relay Granted publication date: 20061025 License type: Exclusive license Record date: 20081127 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.2 TO 2013.10.1; CHANGE OF CONTRACT Name of requester: WEIHAI TIANYING ELECTRIC APPLIANCE FACATORY Effective date: 20081127 |