CN1688009A - Oil-free vibration-resisting sulfur hexafluoride gas density relay - Google Patents
Oil-free vibration-resisting sulfur hexafluoride gas density relay Download PDFInfo
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- CN1688009A CN1688009A CN 200510017506 CN200510017506A CN1688009A CN 1688009 A CN1688009 A CN 1688009A CN 200510017506 CN200510017506 CN 200510017506 CN 200510017506 A CN200510017506 A CN 200510017506A CN 1688009 A CN1688009 A CN 1688009A
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Abstract
This invention relates to a no-oil anti-vibration SF6 gas density relay capable of monitoring the gas density of SF6 in operation and ensuring the safely operation of the gas insulation devices including a frame, an indicating devices on the frame, a driving device controlling operation of the instruction device, a primary standard gas chamber and an operation chamber are set on the frame, a drive plate is set between the two chambers controlling the work of the instruction device via the drive device, a switch matched to the drive plate is installed on the frame and led to the terminal box y a signal line, which has the advantages of accurate compensating temperature, great contact force of the contact point, strong reliability and leakage-proof.
Description
Technical field:
The present invention 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 objective of the invention is 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 object of the present invention 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 present invention has the following advantages:
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 invention.
Fig. 2 for the present invention when normal operating conditions, the left view of internal structure.
Fig. 3 for the present invention 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) 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.
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 each parts 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 |
|---|---|---|---|
| CNB2005100175064A CN100364024C (en) | 2005-04-11 | 2005-04-11 | Oil-free vibration-resisting sulfur hexafluoride gas density relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100175064A CN100364024C (en) | 2005-04-11 | 2005-04-11 | Oil-free vibration-resisting sulfur hexafluoride gas density relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1688009A true CN1688009A (en) | 2005-10-26 |
| CN100364024C CN100364024C (en) | 2008-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100175064A Active CN100364024C (en) | 2005-04-11 | 2005-04-11 | Oil-free vibration-resisting sulfur hexafluoride gas density relay |
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|---|---|
| CN (1) | CN100364024C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338672A (en) * | 2010-07-16 | 2012-02-01 | 四川电力试验研究院 | Internal temperature rise test and monitoring method of GIS |
| CN102508074A (en) * | 2011-11-03 | 2012-06-20 | 四川电力科学研究院 | Internal overheat fault monitoring method of metal sealed gas-insulated switchgear |
| CN103456561A (en) * | 2013-09-18 | 2013-12-18 | 上海乐研电气科技有限公司 | High-precision sulfur hexafluoride gas density relay |
| CN105097354A (en) * | 2015-07-09 | 2015-11-25 | 安徽瑞鑫自动化仪表有限公司 | Pressure-type sulfur hexafluoride density controller |
| CN112490002A (en) * | 2020-11-26 | 2021-03-12 | 武汉电联电力电气技术有限公司 | Self-healing capacitor differential pressure damping type protection method and device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2926260A1 (en) * | 1979-06-29 | 1981-01-08 | Bbc Brown Boveri & Cie | Gas density monitor for gas filled HV switchgear - has bourdon tube enclosed in gas to operate indicator |
| CH660630A5 (en) * | 1982-08-16 | 1987-05-15 | Bbc Brown Boveri & Cie | DENSITY GUARD FOR GASES, ESPECIALLY IN HIGH VOLTAGE SWITCHGEAR SYSTEMS INSULATED BY GAS. |
| US6263914B1 (en) * | 1999-04-09 | 2001-07-24 | Abb Power T&D Company Inc. | Gas density monitor assembly |
| CN2519397Y (en) * | 2001-12-30 | 2002-10-30 | 高新榜 | Pointer type SF6 gas density relay |
| CN2831397Y (en) * | 2005-04-11 | 2006-10-25 | 平顶山天鹰集团有限责任公司 | Oil-less anti-shock sulfur hexafluoride gas density relay |
-
2005
- 2005-04-11 CN CNB2005100175064A patent/CN100364024C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338672A (en) * | 2010-07-16 | 2012-02-01 | 四川电力试验研究院 | Internal temperature rise test and monitoring method of GIS |
| CN102338672B (en) * | 2010-07-16 | 2012-12-26 | 四川电力试验研究院 | Internal temperature rise test and monitoring method of GIS |
| CN102508074A (en) * | 2011-11-03 | 2012-06-20 | 四川电力科学研究院 | Internal overheat fault monitoring method of metal sealed gas-insulated switchgear |
| CN102508074B (en) * | 2011-11-03 | 2013-10-16 | 四川电力科学研究院 | Internal overheat fault monitoring method of metal sealed gas-insulated switchgear |
| CN103456561A (en) * | 2013-09-18 | 2013-12-18 | 上海乐研电气科技有限公司 | High-precision sulfur hexafluoride gas density relay |
| CN105097354A (en) * | 2015-07-09 | 2015-11-25 | 安徽瑞鑫自动化仪表有限公司 | Pressure-type sulfur hexafluoride density controller |
| CN112490002A (en) * | 2020-11-26 | 2021-03-12 | 武汉电联电力电气技术有限公司 | Self-healing capacitor differential pressure damping type protection method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100364024C (en) | 2008-01-23 |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 change Contract record no.: 2008370000142 Denomination of invention: Oil-free vibration-resisting sulfur hexafluoride gas density relay Granted publication date: 20080123 License type: Exclusive license Record date: 20081127 |
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| 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 |
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| ASS | Succession or assignment of patent right |
Owner name: PINGGAO ELECTRIC CO., LTD., HENAN Free format text: FORMER OWNER: PINGGAO GROUP CO., LTD. Effective date: 20131217 |
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Effective date of registration: 20131217 Address after: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee after: Pinggao Electric Co., Ltd., Henan Address before: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee before: Pinggao Group Co., Ltd. |