CN202076182U - Gas monitoring device - Google Patents
Gas monitoring device Download PDFInfo
- Publication number
- CN202076182U CN202076182U CN2011201737286U CN201120173728U CN202076182U CN 202076182 U CN202076182 U CN 202076182U CN 2011201737286 U CN2011201737286 U CN 2011201737286U CN 201120173728 U CN201120173728 U CN 201120173728U CN 202076182 U CN202076182 U CN 202076182U
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- gas
- electric contact
- pointer
- warning
- spring pipe
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Abstract
The utility model discloses a gas monitoring device, which is characterized in that an index plate is arranged at the upper part of a meter case; a pointer is arranged in the center of the index plate; the lower part of the pointer is arranged on a clock movement; the clock movement is provided with a warning electric contact point and a latching electric contact point; the index plate is provided with a warning contact and a latching contact respectively corresponding to the warning electric contact point and the latching electric contact point; the warning contact and the latching contact pass through a junction box and then are electrically connected with a control cabinet; a spring pipe is arranged in the meter case; one end of the spring pipe is communicated with a gas inlet pipe; the other end of the spring pipe is connected with one end of a double-layer metal sheet; the other end of the double-layer metal sheet is connected with the clock movement; SF6 (sulfur hexafluoride) gas enters the spring pipe; the spring pipe deforms under the action of the pressure of the gas; the end part of the spring pipe displaces in an upward direction; the pointer is driven to move towards a direction in which a density indicating value or a pressure indicating value is increased through the clock movement,when the indicating value becomes big, the detection of the density of the gas can be completed. The gas monitoring device has the characteristics of overall monitoring, corrosion prevention, waterproofing, good performance of shielding electromagnetic interference, stable and reliable performance and environmental protection.
Description
Technical field
The utility model relates to a kind of supervising device, particularly a kind of gas monitoring apparatus, and being mainly used in all kinds of in the high voltage power transmission and transforming net system is the monitoring and the control of gas density in the high-voltage electrical equipment of dielectric with SF6 gas.
Background technology
It is the monitoring and the control of gas density in the high-voltage electrical equipment of dielectric with SF6 (sulphur hexafluoride) gas that gas monitoring apparatus is mainly used in all kinds of in the high voltage power transmission and transforming net system.SF6 gas in high-voltage electrical equipment leaks, and when density reduces, in time exports tonifying Qi, block signal and alarm, to guarantee the safe and reliable operation of electrical network power transmission and transformation system.Present SF6 density controller (relay) is pot type or the print cartridge formula structure of not being with the bellows structure of density (pressure) indication basically.The SF6 gas density relay and after the High-Voltage Electrical Appliances internal and external temperature reaches balance, just can accurately measure the density value of SF6 gas only when High-Voltage Electrical Appliances are out of service; During the High-Voltage Electrical Appliances operation,,, can make the electrical contacts closed of density monitor because more SF6 gas is leaked in the effect of temperature rise when more out of service than High-Voltage Electrical Appliances if High-Voltage Electrical Appliances leak SF6 gas.This small product size is big, and housing is a cast aluminium, because the employing of inner principle is sensitive switch, though solved the contact reliability of contact, sensitivity is relatively poor, and accuracy class is 2.5 grades.Because no Presentation Function; on-the-spot can not judgment device in the state of SF6 gas; if the SF6 gas pressure descends in the equipment; this product reflection place in time comes, and when only the SF6 gas pressure reached capacity state in equipment, this instrument could be prompted to main control room with signal form; must be during the overhaul of the equipments inflation by the SF6 Pressure gauge of outer tape splicing demonstration; make troubles for on-the-spot inspection and maintenance tonifying Qi work, so when equipment operation, can not realize the safeguard protection desirable to equipment.
The appearance of SF6 gas gauge, though solved the problem that gas pressure shows in the high-voltage electrical equipment equipment, but the Pressure gauge registration is influenced by ambient temperature, indicate imprecise, can not export control signal, must be used with relay, could realize supervision and control the SF6 gas density.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of gas monitoring apparatus, density meter, relay, temperature compensation means are combined, SF6 gas in high-voltage electrical equipment leaks, when density reduces, timely output tonifying Qi, block signal and alarm to guarantee the safe and reliable operation of electrical network power transmission and transformation system, has that monitoring is comprehensive, anticorrosion, waterproof, the shield electromagnetic interference performance is good, stable and reliable for performance and the characteristics of environmental protection.
To achieve these goals, the technical solution adopted in the utility model is: a kind of gas monitoring apparatus, include watchcase 1, watchcase 1 top is provided with dial 2, the center of dial 2 is provided with pointer 3, pointer 3 bottoms are located on the movement 4, movement 4 is provided with warning electric contact 5 and locking electric contact 6, on dial 2, be provided with respectively and warning electric contact 5 and locking electric contact 6 corresponding Alarm contactor 7 and locking contacts 8, Alarm contactor 7 and locking contact 8 are electrically connected with control cubicle by after the terminal box 13 again, the inside of watchcase 1 is provided with bourdon tube 9, one end of bourdon tube 9 seals, the other end is connected with air inlet pipe 10, and the blind end of bourdon tube 9 is connected with an end of bimetallic strip 11, and the other end of bimetallic strip 11 is connected with movement 4.
Described watchcase 1 adopts stainless steel.
Described warning electric contact 5, locking electric contact 6, Alarm contactor 7 and locking contact 8 are coated with Precious Metals-Gold.
The end of described bourdon tube 9 adopts hinge to be connected with bimetal leaf 11.
Described air inlet pipe 10 is connected with joint valve door controller 12.
The beneficial effects of the utility model are:
1), density meter, relay, temperature compensation means are combined, monitoring comprehensively, monitoring accurately, the cost performance height;
2), shell adopts all steel, hermetically sealed, anticorrosion, waterproof, shield electromagnetic interference performance are good, stable and reliable for performance;
3), the contact is gold-plated and the contact magnetic design, makes the relay contact action sensitive more, accurate, reliable;
4), the joint valve door controller 12 that is provided with, reduced and dismantled the damage that equipment is caused back and forth, the dangerous and harm of having avoided the SF6 gas leakage to bring helps environmental protection.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are described in further detail.
Referring to accompanying drawing, a kind of gas monitoring apparatus, include stainless steel watch case 1, watchcase 1 top is provided with dial 2, the center of dial 2 is provided with pointer 3, pointer 3 bottoms are located on the movement 4, pointer 3 is provided with warning electric contact 5 and locking electric contact 6, on dial 2, be provided with respectively and warning electric contact 5 and locking electric contact 6 corresponding Alarm contactor 7 and locking contacts 8, described warning electric contact 5, locking electric contact 6, Alarm contactor 7 and locking contact 8 are coated with Precious Metals-Gold, Alarm contactor 7 and locking contact 8 are electrically connected with control cubicle by terminal box 13 backs again, the inside of watchcase 1 is provided with bourdon tube 9, one end of bourdon tube 9 seals, and the other end is connected with air inlet pipe 10, and air inlet pipe 10 is connected with joint valve door controller 12, joint valve door controller 12 communicates with High-Voltage Electrical Appliances again, the blind end of bourdon tube 9 is connected with an end of bimetallic strip 11,11 temperature compensation functions of bimetallic strip, and the other end of bimetallic strip 11 is connected with movement 4.
When the high-voltage electrical equipment internal gas pressure changed, bourdon tube 9 produced deformation, and this deformation drives pointer 3 by movement 4, and pointer 3 rotations show SF6 gas density value by the reading on the dial plate 2; Warning electric contact 5 that pointer 3 is provided with and locking electric contact 6 are followed pointer 3 and are moved, and realize closed and disconnection between the Alarm contactor 7 of corresponding settings and the locking contact 8 respectively with on the dial plate 2 in the force value of setting, thus realization relay controlled function.The material of bimetallic strip and structure can well compensate the bourdon tube deformation that causes owing to variation of ambient temperature through selecting meticulously and designing, and the deformation of guaranteeing bourdon tube is because the variation of SF6 gas density causes fully.
Adopt gas pointer-type density meter technology,, realize accurate detection the SF6 gas density by it is further improved, improves; By warning electric contact 5 and the locking electric contact 6 that on pointer, is provided with, make device possess the function of SF6 relay, when making device realize that the SF6 gas density monitors, also can realize controlled function; Bourdon tube edge reload temperature compensating element, is a bimetallic strip, can overcome ambient temperature effect, makes instrument always show force value when being adapted to 20 ℃, thereby plays the purpose of monitoring SF6 gas density; Employing exempts to dismantle the joint technology, makes that instrument replacing, maintenance, verification, high-voltage electrical equipment fill, tonifying Qi, little water gaging be convenient.
Carry out simple gas circuit handover operation by the butt joint valve positioner, just can finish instrument replacing, high-voltage electrical equipment inflation, tonifying Qi, instrument detection, verification, operations such as little water gaging greatly facilitate the user.Save manpower, reduce workload, reduced and dismantled the damage that equipment is caused back and forth, for site examining and repairing and SF6 state verification bring great convenience, the dangerous and harm of having avoided the SF6 gas leakage to bring.
Operation principle of the present utility model is:
1. filling to High-Voltage Electrical Appliances in the process of SF6 gas, progressively rising along with gas pressure, SF6 gas enters in the bourdon tube 9 by air inlet pipe 10, the direction that the end of bourdon tube 9 makes progress is subjected to displacement, driving pointer 3 by movement 4 moves to the direction of density or the increase of pressure indicated value, its indicated value becomes big (vice versa), thereby finishes the detection to gas density.
2. after High-Voltage Electrical Appliances charge into SF6 gas, the force value of its indication will be changes with the variation of ambient temperature, the normal pressure value when instrument shows 20 ℃ of SF6 gases all the time.When ambient temperature raises, the temperature of the inner SF6 gas of High-Voltage Electrical Appliances is also along with rising, pressure also increases thereupon, the trend that direction that pointer 3 increases to density or force value moves that drives is arranged, but, because raising with ambient temperature, extends bimetallic strip 11, its direction of motion is just opposite with bourdon tube 9 directions of motion, so, both variable quantities are offset fully, and consequently the indicated value of pointer 3 is constant, that is: density or force value when converting 20 ℃ automatically remain unchanged, otherwise when ambient temperature reduced, the indicated value of pointer also kept original force value constant.
3. work as High-Voltage Electrical Appliances for a certain reason, as gas leakage or get gas etc. when doing experiment, the SF6 gaseous mass is reduced, pressure diminishes, bourdon tube 9 drives pointer and moves to the direction that indicated value reduces, the pressure variation that ambient temperature causes is compensated by bimetallic strip 11, and consequently pointer 3 indicated pressure values diminish.Owing to have warning electric contact 5 and locking electric contact 6 on the pointer 3, signal when reducing and locking High-Voltage Electrical Appliances usefulness for the SF6 gas density, when pointer 3 drops to Alarm contactor, warning electric contact 5, Alarm contactor 7 warning closures are just sent out the tonifying Qi signal to control cubicle, when continuing to drop to locking setting contact as pointer 3, locking electric contact 6 is just sent out block signal to control cubicle with locking contact 8 closures.
Claims (5)
1. gas monitoring apparatus, include watchcase (1), watchcase (1) top is provided with dial (2), the center of dial (2) is provided with pointer (3), pointer (3) bottom is located on the movement (4), it is characterized in that, movement (4) is provided with warning electric contact (5) and locking electric contact (6), on dial (2), be provided with respectively and warning electric contact (5) and corresponding Alarm contactor of locking electric contact (6) (7) and locking contact (8), Alarm contactor (7) and locking contact (8) are electrically connected with control cubicle by after the terminal box (13) again, the inside of watchcase (1) is provided with bourdon tube (9), one end of bourdon tube (9) seals, the other end is connected with air inlet pipe (10), and the blind end of bourdon tube (9) is connected with an end of bimetallic strip (11), and the other end of bimetallic strip (11) is connected with movement (4).
2. a kind of gas monitoring apparatus according to claim 1 is characterized in that, described watchcase (1) adopts stainless steel.
3. a kind of gas monitoring apparatus according to claim 1 is characterized in that, described warning electric contact (5), locking electric contact (6), Alarm contactor (7) and locking contact (8) are coated with Precious Metals-Gold.
4. a kind of gas monitoring apparatus according to claim 1 is characterized in that, the end of described bourdon tube (9) adopts hinge to be connected with bimetal leaf (11).
5. a kind of gas monitoring apparatus according to claim 1 is characterized in that, described air inlet pipe (10) is connected with joint valve door controller (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201737286U CN202076182U (en) | 2011-05-26 | 2011-05-26 | Gas monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201737286U CN202076182U (en) | 2011-05-26 | 2011-05-26 | Gas monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076182U true CN202076182U (en) | 2011-12-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201737286U Expired - Fee Related CN202076182U (en) | 2011-05-26 | 2011-05-26 | Gas monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076182U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115614A (en) * | 2015-08-17 | 2015-12-02 | 安徽电气集团股份有限公司 | A high and low temperature early warning bimetal thermometer |
| CN105374624A (en) * | 2015-11-26 | 2016-03-02 | 上海乐研电气科技有限公司 | Gas density relay equipped with external gas density level indicator |
| CN109959483A (en) * | 2019-04-23 | 2019-07-02 | 安徽天康(集团)股份有限公司 | Distance-transmission pressure gauge |
| CN110211840A (en) * | 2019-07-04 | 2019-09-06 | 上海新远仪表厂有限公司 | Electric contact |
| CN113758653A (en) * | 2021-09-09 | 2021-12-07 | 河南平高电气股份有限公司 | Method for monitoring SF6 density relay in real time and pre-judging air leakage |
-
2011
- 2011-05-26 CN CN2011201737286U patent/CN202076182U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115614A (en) * | 2015-08-17 | 2015-12-02 | 安徽电气集团股份有限公司 | A high and low temperature early warning bimetal thermometer |
| CN105115614B (en) * | 2015-08-17 | 2018-03-13 | 安徽电气集团股份有限公司 | A kind of high-low temperature pre-warning bimetallic thermometer |
| CN105374624A (en) * | 2015-11-26 | 2016-03-02 | 上海乐研电气科技有限公司 | Gas density relay equipped with external gas density level indicator |
| CN105374624B (en) * | 2015-11-26 | 2017-08-08 | 上海乐研电气有限公司 | A kind of gas density relay provided with external gas density level indicator |
| CN109959483A (en) * | 2019-04-23 | 2019-07-02 | 安徽天康(集团)股份有限公司 | Distance-transmission pressure gauge |
| CN110211840A (en) * | 2019-07-04 | 2019-09-06 | 上海新远仪表厂有限公司 | Electric contact |
| CN110211840B (en) * | 2019-07-04 | 2024-02-02 | 上海新远仪表厂有限公司 | Electrical contact |
| CN113758653A (en) * | 2021-09-09 | 2021-12-07 | 河南平高电气股份有限公司 | Method for monitoring SF6 density relay in real time and pre-judging air leakage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140526 |