CN102109480A - Micro water transmitter for high-voltage switch gas insulated switchgear (GIS) distribution room - Google Patents
Micro water transmitter for high-voltage switch gas insulated switchgear (GIS) distribution room Download PDFInfo
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- CN102109480A CN102109480A CN2009102488269A CN200910248826A CN102109480A CN 102109480 A CN102109480 A CN 102109480A CN 2009102488269 A CN2009102488269 A CN 2009102488269A CN 200910248826 A CN200910248826 A CN 200910248826A CN 102109480 A CN102109480 A CN 102109480A
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Abstract
The invention belongs to the field of transmitters, and in particular relates to a micro water transmitter for a high-voltage switch gas insulated switchgear (GIS) distribution room. The transmitter comprises a body (1), and a connecting piece (3), a sensor bracket (5), a sensor seat (6), a dew point sensor, a pressure sensor, a temperature sensor, a pressure voltage/current (V/I) conversion module and a temperature conversion module which are arranged in the body (1), wherein the top of the sensor bracket (5) is fixedly connected with the bottom of the sensor seat (6); the main body of the dew point sensor is packaged in the sensor seat (6), and the probe part of the dew point sensor is arranged in the inner cavity of the body (1); the top of the sensor seat (6) is provided with a pressure sensor assembling groove for assembling the pressure sensor; the side wall of the pressure sensor assembling groove is provided with a through hole; and the output port of the connecting piece (3) is communicated with the inner cavity of the body (1). The transmitter has high sealing property, insulating property, anti-interference property and response speed.
Description
Technical field
The invention belongs to the transmitter field, relate in particular to a kind of high-voltage switch gear GIS switchgear building with little water transmitter.
Background technology
High-voltage switch gear is one of visual plant of power plant, transformer station, in order safely and reliably electric power to be delivered to national grid, must guarantee normal, the reliability services of equipment work such as high-voltage switch gear.In high-voltage switch gear GIS equipment, whether the density of SF6 blanket gas and micro-moisture content all can play crucial effects by reliability service to high-voltage switch gear, mainly show: the switch insulation performance reduction that moisture exceeds standard and brings causes high-voltage breakdown; Produce shelf depreciation because of insulating capacity descends near two end electrodes, the time has been grown and has caused the connectivity flashover; Directly influence the break performance of high-voltage switch gear.Therefore, need the density and the micro-moisture content of SF6 gas in the high-voltage switch gear GIS equipment be detected in real time.
In the measurement of SF6 gas micro-moisture content, traditional method often adopts the portable micro-water measuring instrument, its shortcoming is that the portable micro-water measuring instrument can not carry out the online in real time measurement to SF6 gas micro-moisture content, be merely able to regularly micro-water content be measured, when micro-water content is measured, need in air chamber, emit a part of SF6 gas, generally requiring Measuring Time is 5～10 minutes, gas discharges flow value 5L/min, the gas burst size that each detection brings is very big, and the test process more complicated is not easy to operation, and, can't adopt the method to detect especially for the less SF6 switch of air chamber.Simultaneously, owing to emit the SF6 gas of a part from air chamber, the density of SF6 gas will descend in the air chamber, therefore must carry out tonifying Qi to the SF6 air chamber, can influence micro-water content in the SF6 air chamber so again, bring bigger error to measurement.
At present, also having occurred little water transmitter that some can online detection on the market, mainly is to adopt the humidity sensor principle, and precision is relatively poor, and does not have temperature compensation, can not satisfy the accuracy requirement of electric system GIS high-voltage switch gear micro-moisture content detection; The structure of transmitter only adopts the connected mode of screw thread and cushion rubber, does not adopt special method, and the sealing of transmitter can not guarantee, and for the high-voltage switch gear measuring instrument, it is important that the sealing of transmitter causes the pass again; Pressure transducer and the humidity sensor of forming little water transmitter are welded direct on the housing of little water transmitter, not insulation isolation between the housing of sensor and transmitter, and the use scene of little water transmitter is the environment of 220KV or 500KV UHV (ultra-high voltage), the scene exists various electromagnetic interference (EMI) and static, electromagnetic interference (EMI) in the site environment and static can be by the housings of transmitter, directly affact sensor, thereby sensor is broken.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art part and a kind of good airproof performance is provided, the insulativity height, and strong interference immunity, the fast high-voltage switch gear GIS switchgear building of response speed is with little water transmitter.
For achieving the above object, the present invention is achieved in that
A kind of high-voltage switch gear GIS switchgear building is with little water transmitter, and it comprises: body, web member, sensor bracket, sensor holder, dew point transducer, pressure transducer, temperature sensor, pressure V/I modular converter and temperature transition module; Described sensor bracket, sensor holder, dew point transducer, pressure transducer, temperature sensor, pressure V/I modular converter and temperature transition module place in the body;
The top of described sensor bracket and the bottom of sensor holder are affixed;
Main body at described dew point transducer is packaged in the sensor holder, and its probe segment places the inner chamber of body;
Be provided with the pressure transducer fitting recess of equipped pressure transducer at the top of described sensor holder; Sidewall at described pressure transducer fitting recess is provided with through hole, so that intrinsic gas to be measured imports in the pressure transducer fitting recess;
The output port of described web member communicates with the inner chamber of body;
Dew point signal input part on the output terminal jointing temp modular converter of described dew point transducer; Dew point transducer is converted to voltage signal with the dew point value of gas to be measured in the body, transfers to the signal Processing end again;
The input end of the output termination pressure V/I modular converter of described pressure transducer; Pressure transducer is converted to voltage signal with the pressure of gas to be measured in the body, transfers to the V/I modular converter;
The input end of the output terminal jointing temp modular converter of described temperature sensor; The signal of temperature sensor output transfers to the temperature transition module.
As a kind of preferred version, the present invention's crosswise fixed in described body is provided with can cut down seat; Be provided with the temperature transition module on the top that can cut down seat; Be provided with pressure V/I modular converter in the described bottom of cutting down seat.Can cut down seat and adopt welded structure with housing, housing and body also adopt welded structure, to guarantee the sealing property of entire product.
As another kind of preferred version, the present invention is provided with the module upper jacket on described temperature transition module; On described pressure V/I modular converter, be provided with the module lower jacket.
Further, the present invention is provided with the unidirectional reverse checkvalve of protection type on described body; The unidirectional reverse checkvalve port of described protection type communicates with the inner chamber of body.
Further, the present invention is fixed with shell in the outside of described body with welding manner.
In addition, sensor bracket of the present invention and body are fixedly connected; On described sensor bracket, be provided with gas via-hole.
Secondly, the present invention is fixed with out wire terminal in described upper part of body.
Once more, sensor bracket of the present invention, sensor holder, module upper jacket and module lower jacket all adopt poly-PTFE.
Good airproof performance of the present invention, the insulativity height, strong interference immunity, response speed is fast, and compared with prior art, characteristics of the present invention are in particular in:
1, can cut down the employing of seat, transmitter integral solder structure Design improves the sealing of transmitter widely.
2, the upper and lower sheath of sensor bracket, sensor holder, module that adopts poly-PTFE to make wraps up pressure transducer, dew point transducer, pressure V/I modular converter, temperature transition module, improve the insulativity of transmitter widely, improved the dielectric strength of product.
3, the diffusion time of transmitter gas is accelerated in the employing of unidirectional reverse checkvalve, improves the response speed of transmitter.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.Protection scope of the present invention will not only be confined to the statement of following content.
Fig. 1 is an one-piece construction synoptic diagram of the present invention;
Fig. 2 is the little water transmitter of a present invention pressure V/I modular converter schematic diagram;
Fig. 3 is the little water transmitter temperatures of a present invention modular converter schematic diagram.
Among Fig. 1: 1 is body; 2 is the attaching nut; 3 is web member; 4 is the unidirectional reverse checkvalve of protection type; 5 is sensor bracket; 6 is sensor holder; 7 is shell; 8 for can cut down seat; 9 is the module upper jacket; 10 is the module lower jacket; 11 is loam cake; 12 for going out wire terminal.
Embodiment
As shown in Figure 1, high-voltage switch gear GIS switchgear building is with little water transmitter, and it comprises: body 1, web member 3, sensor bracket 5, sensor holder 6, dew point transducer, pressure transducer, temperature sensor, pressure V/I modular converter and temperature transition module; Described sensor bracket 5, sensor holder 6, dew point transducer, pressure transducer, pressure V/I modular converter place in body 1 and the shell 7;
The bottom of the top of described sensor bracket 5 and sensor holder 6 is affixed;
Main body at described dew point transducer is packaged in the sensor holder 6, and its probe segment 15 places the inner chamber of body 1;
Be provided with the pressure transducer fitting recess of equipped pressure transducer at the top of described sensor holder 6; Sidewall at described pressure transducer fitting recess 13 is provided with through hole 14, so that the gas to be measured in the body 1 imports in the pressure transducer fitting recess 13;
The output port of described web member 3 communicates with the inner chamber of body 1;
Dew point signal input part on the output terminal jointing temp module of described dew point transducer; Dew point transducer is converted to voltage signal with the dew point value of gas to be measured in the body 1, transfers to the signal Processing end again;
The input end of the output termination pressure V/I modular converter of described pressure transducer; Pressure transducer is converted to voltage signal with the pressure of gas to be measured in the body 1, transfers to the V/I modular converter;
The input end of the output terminal jointing temp modular converter of described temperature sensor; The signal of temperature sensor output transfers to the temperature transition module.
Crosswise fixed is provided with and can cuts down seat 8 in described body 1; Be provided with the temperature transition module on the top that can cut down seat 8; Be provided with pressure V/I modular converter in the described bottom of cutting down seat 8.
On described temperature transition module, be provided with module upper jacket 9; On described pressure V/I modular converter, be provided with module lower jacket 10.
On described body 1, be provided with the unidirectional reverse checkvalve 4 of protection type; Unidirectional reverse checkvalve 4 ports of described protection type communicate with the inner chamber of body 1.
External stability at described body 1 is provided with shell 7.
Be fixed with out wire terminal 12 on the top of described body 1.
Described sensor bracket 5, sensor holder 6, module upper jacket 9 and module lower jacket 10 all adopt poly-PTFE.
Referring to Fig. 1, when concrete the making, the present invention includes: the unidirectional reverse checkvalve 4 of protection type, web member 3, attaching nut 2, O-ring seal, body 1, shell 7, can cut down seat 8, sensor bracket 5, sensor holder 6, module upper jacket 9, module lower jacket 10, insulcrete, loam cake 11, go out wire terminal 12, dew point transducer, pressure transducer, temperature sensor, pressure V/I modular converter, temperature transition module;
Little water transmitter body 1 is connected with web member 3, sensor bracket 5, the unidirectional reverse checkvalve 4 of protection type and shell 7, SF6 gas is introduced in the air chamber of body 1 by web member 3, the dew point transducer probe that is fixed on the sensor bracket 5 places in the air chamber of body 1, in order to detect SF6 gas micro-water content, the air chamber of body 1 only communicates with web member, and do not communicate with the unidirectional reverse checkvalve 4 of protection type, SF6 gas enters the cavity of little water transmitter by two air holes on the sensor bracket 5;
Described web member 3 is connected with the on-the-spot unidirectional reverse checkvalve of high-voltage switch gear, is connected with little water transmitter body 1, and SF6 gas in the high-voltage switch gear is introduced in the body;
Described attaching nut 2 is fixed together web member 3 and on-the-spot unidirectional reverse checkvalve, adopts O-ring seal to seal;
Described sensor bracket 5 is connected with body 1 by external thread, be connected with dew point transducer by internal thread, two air holes are arranged on the sensor bracket 5, SF6 gas can be introduced the cavity of little water transmitter, sensor bracket 5 is connected with sensor holder 6 by gluing method;
Described sensor holder 6 and sensor bracket 5 are by gluing method, dew point transducer is sealed in wherein, dew point transducer and housing 7 insulation are isolated, two air holes are arranged on the sensor holder 6, be connected with the blow vent of sensor bracket 5, SF6 gas can be imported in the cavity of little water transmitter, one column type pressure transducer fitting recess 13 is arranged at sensor holder 6 tops, be used for fixing pressure transducer, below pressure transducer fitting recess 13, there is a through hole 14 side of sensor holder 6, in order to SF6 gas is introduced pressure transducer fitting recess 13, pressure transducer is measured the pressure of SF6 gas, one cylindrical hole is arranged at sensor holder 6 tops, and the connection lead of dew point transducer passes by this hole, is connected with pressure V/I modular converter;
Described shell 7 welds together with body 1, forms the transmitter cavity of sealing; Can cut down seat 8 and weld together, play sealing and the effect of passing line with body 1; Shell 7 is connected with loam cake 11 by external thread;
Described to cut down seat 8 be to hole on the patty stainless steel, injects the liquid glass water identical with the stainless steel expansion coefficient in the hole, places tinsel in the middle of bath of glass, is placed on sintering in the special stove, finishes after polishing and can cut down a making of 8.Can cut down seat 8 is welded on the shell 7, shell 7 is welded on the body 1, form little water transmitter cavity of sealing, place dew point transducer, pressure transducer on the sensor holder 6 to be sealed in the cavity of little water transmitter, the line of dew point transducer, pressure transducer is respectively welded to the V/I modular converter; The side welded wire that can cut down seat 8 little water transmitter cavitys is to the V/I modular converter, and opposite side is welded on the temperature transition module.The above and below that can cut down seat 8 bonds together by insulating gel and insulcrete; Can cut down the top of seat 8 is connected with temperature transition module and module upper jacket 9 by screw successively; Can cut down followingly being connected with pressure V/I modular converter and module lower jacket 10 by screw successively of seat 8; Top four one metal wires that can cut down seat 8 are connected with temperature V/I modular converter by welding; Bottom's four one metal wires that can cut down seat 8 are connected with pressure V/I modular converter by welding;
Described module upper jacket parcel temperature transition module plays temperature transition module and transmitter shell 7 and can cut down the effects that seat 8 insulate;
Described module lower jacket parcel pressure V/I modular converter plays pressure V/I modular converter and transmitter shell and can cut down the effect that seat insulate;
The unidirectional reverse checkvalve 4 of described protection type is connected with body 1 by the external thread interference fit, seal by cushion rubber, SF6 gas enters the unidirectional reverse checkvalve 4 of protection type by three air holes on the body, realize the venting function of little water transmitter by pushing the unidirectional reverse checkvalve of protection type, thereby realize the wash away function of SF6 gas transmitter;
Describedly go out wire terminal 12 and connect by being weldingly connected, draw the connection lead with loam cake 11;
Described dew point transducer inserts in the sensor holder 6, be connected with sensor holder 6, sensor holder 6 is connected by gluing connecing with sensor bracket 5, dew point transducer is converted to voltage signal with the dew point value of SF6 gas in the transmitter cavity, be transferred to the temperature transition module, 4～20mA current signal of outputting standard;
Described pressure transducer is pressed in the sensor holder 6 column type grooves, and line is welded on the pressure V/I modular converter, and pressure transducer is converted to voltage signal with the pressure of SF6 gas in the transmitter cavity, is transferred to the V/I modular converter;
The input end of described pressure V/I modular converter is connected with the output terminal of described dew point transducer, is connected with the output terminal of pressure transducer, but is connected with the tinsel of valve seat 8.The voltage signal of sensor output, after the amplification of V/I modular converter, filtering, 4～20mA current signal of outputting standard.
The input end of described temperature transition module is connected with the signal wire of little water transmitter outside, temperature sensor directly is welded on the temperature transition module, the signal of temperature sensor output, after the amplification of process temperature transition module, the filtering, 4～20mA current signal of outputting standard.
Referring to Fig. 2, be the little water transmitter of the present invention pressure V/I modular converter schematic diagram;
Referring to Fig. 3, be the little water transmitter temperatures of the present invention modular converter schematic diagram;
Certainly, the present invention also can adopt other existing V/I conversion or temperature transition treatment circuit according to actual needs.
Be with being appreciated that, more than about specific descriptions of the present invention, only be used to the present invention is described and be not to be subject to the described technical scheme of the embodiment of the invention, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as satisfy, all within protection scope of the present invention.
Claims (8)
1. a high-voltage switch gear GIS switchgear building is with little water transmitter, it is characterized in that, comprising: body (1), web member (3), sensor bracket (5), sensor holder (6), dew point transducer, pressure transducer, temperature sensor, pressure V/I modular converter and temperature transition module; Described sensor bracket (5), sensor holder (6), dew point transducer, pressure transducer, temperature sensor, pressure V/I modular converter and temperature transition module place in the body (1);
The bottom of the top of described sensor bracket (5) and sensor holder (6) is affixed;
Main body at described dew point transducer is packaged in the sensor holder (6), and its probe segment (15) places the inner chamber of body (1);
Be provided with the pressure transducer fitting recess (13) of equipped pressure transducer at the top of described sensor holder (6); Sidewall at described pressure transducer fitting recess is provided with through hole (14), so that the gas to be measured in the body (1) imports in the pressure transducer fitting recess (13);
The output port of described web member (3) communicates with the inner chamber of body (1);
Dew point signal input part on the output terminal jointing temp modular converter of described dew point transducer; Dew point transducer is converted to voltage signal with the dew point value of gas to be measured in the body (1), transfers to the signal Processing end again;
The input end of the output termination pressure V/I modular converter of described pressure transducer; Pressure transducer is converted to voltage signal with the pressure of gas to be measured in the body (1), transfers to the V/I modular converter again;
The input end of the output terminal jointing temp modular converter of described temperature sensor; The signal of temperature sensor output transfers to the temperature transition module.
2. high-voltage switch gear GIS switchgear building according to claim 1 is characterized in that with little water transmitter: crosswise fixed is provided with and can cuts down seat (8) in described body (1); Be provided with the temperature transition module on the top that can cut down seat (8); Be provided with pressure V/I modular converter in the described bottom of cutting down seat (8).
3. high-voltage switch gear GIS switchgear building according to claim 2 is characterized in that: be provided with module upper jacket (9) on described temperature transition module with little water transmitter; On described pressure V/I modular converter, be provided with module lower jacket (10).
According to the arbitrary described high-voltage switch gear GIS switchgear building of claim 1～3 with little water transmitter, it is characterized in that: on described body (1), be provided with the unidirectional reverse checkvalve of protection type (4); The unidirectional reverse checkvalve of described protection type (4) port communicates with the inner chamber of body (1).
5. high-voltage switch gear GIS switchgear building according to claim 4 is with little water transmitter, and it is characterized in that: the outside at described body (1) is fixed with shell (7) with welding manner.
6. high-voltage switch gear GIS switchgear building according to claim 5 is characterized in that with little water transmitter: described sensor bracket (5) is fixedly connected with body (1); On described sensor bracket (5), be provided with gas via-hole.
7. high-voltage switch gear GIS switchgear building according to claim 6 is characterized in that: be fixed with out wire terminal (12) on the top of described body (1) with little water transmitter.
8. high-voltage switch gear GIS switchgear building according to claim 7 is characterized in that with little water transmitter: described sensor bracket (5), sensor holder (6), module upper jacket (9) and module lower jacket (10) all adopt poly-PTFE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102488269A CN102109480A (en) | 2009-12-28 | 2009-12-28 | Micro water transmitter for high-voltage switch gas insulated switchgear (GIS) distribution room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102488269A CN102109480A (en) | 2009-12-28 | 2009-12-28 | Micro water transmitter for high-voltage switch gas insulated switchgear (GIS) distribution room |
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| CN102109480A true CN102109480A (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102488269A Pending CN102109480A (en) | 2009-12-28 | 2009-12-28 | Micro water transmitter for high-voltage switch gas insulated switchgear (GIS) distribution room |
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| CN (1) | CN102109480A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836191A (en) * | 2012-11-27 | 2014-06-04 | 北京航天试验技术研究所 | Method for sealing low-temperature sensor |
| CN104062406A (en) * | 2014-07-04 | 2014-09-24 | 上海伦仕电子科技有限公司 | Moisture and density transmitter |
| CN104460480A (en) * | 2014-11-11 | 2015-03-25 | 国家电网公司 | Sulfur hexafluoride gas density moisture online monitoring system |
| CN104535456A (en) * | 2014-09-30 | 2015-04-22 | 国家电网公司 | Novel sulfur hexafluoride gas density micro-water transmitter |
| CN106932304A (en) * | 2017-05-15 | 2017-07-07 | 上海欧秒电力监测设备有限公司 | A kind of micro- water monitoring apparatus of density |
| CN109932280A (en) * | 2019-04-25 | 2019-06-25 | 常州优达电子科技有限公司 | Micro- water density transmitter and the micro- water density on-line monitoring system of SF6 for applying it |
| CN110567840A (en) * | 2019-09-04 | 2019-12-13 | 上海乐研电气有限公司 | Overvoltage-resistant gas density transmitter and monitoring system |
| CN112284574A (en) * | 2020-09-30 | 2021-01-29 | 深圳信息职业技术学院 | Pressure sensor packaging structure capable of being packaged and formed at one time |
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| CN201247102Y (en) * | 2008-08-25 | 2009-05-27 | 常州爱特科技有限公司 | Built-in temperature sensor air chamber |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836191A (en) * | 2012-11-27 | 2014-06-04 | 北京航天试验技术研究所 | Method for sealing low-temperature sensor |
| CN104062406A (en) * | 2014-07-04 | 2014-09-24 | 上海伦仕电子科技有限公司 | Moisture and density transmitter |
| CN104062406B (en) * | 2014-07-04 | 2016-04-20 | 上海伦仕电子科技有限公司 | A kind of micro-water-mass density transmitter |
| CN104535456A (en) * | 2014-09-30 | 2015-04-22 | 国家电网公司 | Novel sulfur hexafluoride gas density micro-water transmitter |
| CN104460480A (en) * | 2014-11-11 | 2015-03-25 | 国家电网公司 | Sulfur hexafluoride gas density moisture online monitoring system |
| CN104460480B (en) * | 2014-11-11 | 2018-02-09 | 国家电网公司 | The micro- water on-line monitoring system of sulfur hexafluoride gas density |
| CN106932304A (en) * | 2017-05-15 | 2017-07-07 | 上海欧秒电力监测设备有限公司 | A kind of micro- water monitoring apparatus of density |
| CN109932280A (en) * | 2019-04-25 | 2019-06-25 | 常州优达电子科技有限公司 | Micro- water density transmitter and the micro- water density on-line monitoring system of SF6 for applying it |
| CN110567840A (en) * | 2019-09-04 | 2019-12-13 | 上海乐研电气有限公司 | Overvoltage-resistant gas density transmitter and monitoring system |
| CN112284574A (en) * | 2020-09-30 | 2021-01-29 | 深圳信息职业技术学院 | Pressure sensor packaging structure capable of being packaged and formed at one time |
| CN112284574B (en) * | 2020-09-30 | 2022-01-14 | 深圳信息职业技术学院 | Pressure sensor packaging structure capable of being packaged and formed at one time |
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Application publication date: 20110629 |