CN104807682A - Preparation device and method of mineral oil content standard gas in SF6 (sulfur hexafluoride) gas - Google Patents

Preparation device and method of mineral oil content standard gas in SF6 (sulfur hexafluoride) gas Download PDF

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Publication number
CN104807682A
CN104807682A CN201510192483.4A CN201510192483A CN104807682A CN 104807682 A CN104807682 A CN 104807682A CN 201510192483 A CN201510192483 A CN 201510192483A CN 104807682 A CN104807682 A CN 104807682A
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China
Prior art keywords
gas
mineral oil
thermostatic bath
outlet pipe
formulating
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CN201510192483.4A
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CN104807682B (en
Inventor
朱洪斌
张晓琴
王晨
余翔
孙刚
张建国
陈大兵
刘建军
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ELECTRIC POWER RESEARCH INSTITUTE OF JIANGSU ELECTRIC POWER Co
ZHONGHUI INSTRUMENT CO Ltd
State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
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ELECTRIC POWER RESEARCH INSTITUTE OF JIANGSU ELECTRIC POWER Co
ZHONGHUI INSTRUMENT CO Ltd
State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
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Priority to CN201510192483.4A priority Critical patent/CN104807682B/en
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Abstract

The invention discloses a preparation device and preparation method of mineral oil content standard gas in SF6 gas. The device comprises a thermostatic bath and a cover body used for sealing the thermostatic bath, wherein an accommodating groove of the thermostatic bath accommodates and heats machine oil; an air inlet pipeline and an air outlet pipeline both communicated with the thermostatic bath are respectively arranged at the front end and back end of the cover body; pure SF6 air enters the accommodating groove through the air inlet pipeline, blows the oil surface and is exhausted from the air outlet pipeline; the air outlet pipeline is connected with a mineral oil content-detecting device. The device solves the standard magnitude-transmitting problem when using a device for detecting the mineral oil content in SF6 gas to measure the mineral oil content, can directly calibrate the device for detecting the mineral oil content in SF6 gas to enable the mineral oil-in-SF6-gas content-detecting device to be more accurate in measured data, has the characteristics of being short in time consumption, good in effect, convenient to use, and the like, and provides a powerful safeguard for the safe operation of electrical equipment.

Description

A kind of SF 6the device for formulating of gas mineral oil in fluid content standard gas and method
Technical field
The present invention relates to a kind of SF 6the device for formulating of gas mineral oil in fluid content standard gas and method; Belong to electric system applied technical field.
Background technology
Sulfur hexafluoride (SF 6) gas compared with air, there is excellent electric insulation and arc extinction performance, on electrical equipment, thus obtain scale application, can used as the insulating material of high-voltage switch gear, high-power transformer, high-tension cable etc.But, sulfur hexafluoride production technology of the prior art inevitably makes to be mixed with the impurity compositions such as mineral oil particle in gas, have influence on the purity of sulfur hexafluoride gas, Given this, be applied to the security in electric system in order to ensure sulfur hexafluoride gas, must mineral oil content be wherein detected.But, current SF 6the standard method of measurement of gas mineral oil in fluid content cannot directly be calibrated, and causes the accuracy that cannot judge to detect data, brings hidden danger, urgently improve to the Security Construction of electrical network and production.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of SF 6the device for formulating of gas mineral oil in fluid content standard gas and method, directly to calibrate pick-up unit, improve accuracy and the reliability of testing result.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
First the present invention discloses a kind of SF 6the device for formulating of gas mineral oil in fluid content standard gas, comprise: thermostatic bath and the lid for sealed thermostat bath, hold machinery oil in the containing tank of described thermostatic bath and heat, the front-end and back-end of described lid are respectively equipped with the admission line and outlet pipe that are communicated with thermostatic bath, pure SF 6gas passes in containing tank from admission line and purges pasta again from outlet pipe discharge, and described outlet pipe is connected with mineral oil content pick-up unit.
Preferably, aforementioned admission line is installed a flow control valve to regulate SF 6the flow of gas.
Further, device for formulating of the present invention also comprises a flow detector to control pure SF 6the flow velocity of gas.
Particularly, aforementioned mechanical oil is No. 32 machinery oil.
As a kind of concrete structure, containing tank and the lid of aforementioned thermostatic bath are rotary structure.
Further, aforementioned lid is the cylindrical of top seal, and described admission line and outlet pipe lay respectively at the centre position of front end side wall and rear end sidewall.
In addition, the invention also discloses and utilize aforesaid device for formulating to prepare SF 6the method of gas mineral oil in fluid content standard gas, comprises the steps:
S1, in the containing tank of thermostatic bath load No. 32 machinery oil;
S2, front-end and back-end are respectively equipped with the cover cap of admission line and outlet pipe on the containing tank of thermostatic bath, guarantee to seal containing tank;
S3, thermostatic bath carry out heating temperature control in flash temperature to No. 32 machinery oil, and No. 32 machinery oil produce oil vapour under flash temperature;
S4, by pure SF 6gas passes into admission line, makes SF 6gas purges pasta with constant flow velocity, and discharges from outlet pipe, the SF of discharge 6namely gas have the mineral oil content of normal concentration;
The escape hole of S5, outlet pipe directly connects SF 6gas mineral oil in fluid content detection device, carries out calibration test to it.
In this compound method, under the flash temperature (known) of No. 32 machinery oil, change the SF passed through 6gas flow rate, i.e. adjustable SF 6the content of gas Plays mineral oil.
Usefulness of the present invention is: a kind of SF of the present invention 6the device for formulating of gas mineral oil in fluid content standard gas and compound method, solve and use SF 6gas mineral oil in fluid content detection device measures typical magnitude problem of transmission during mineral oil content, can to SF 6gas mineral oil in fluid content detection device is directly calibrated, and makes its measurement data more accurate, and have the feature such as short, effective, easy to use consuming time, the safe operation for power equipment provides sound assurance more.
Accompanying drawing explanation
Fig. 1 is a kind of SF of the present invention 6the structural representation of a preferred embodiment of the device for formulating of gas mineral oil in fluid content standard gas.
The implication of Reference numeral in figure: 1, thermostatic bath, 2, lid, 3, containing tank, 4, admission line, 5, outlet pipe, 6, flow control valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the present invention.
SF of the present invention 6the device for formulating of gas mineral oil in fluid content standard gas can at pure SF 6prepare the mineral oil gas of standard content in gas, thus directly mineral oil content pick-up unit is calibrated.
The structure of this device is see Fig. 1, comprise: thermostatic bath 1 and the lid 2 for sealed thermostat bath 1, in the containing tank 3 of thermostatic bath 1, hold No. 32 machinery oil and heat to produce oil vapour, the front-end and back-end of lid 2 are respectively equipped with the admission line 4 and outlet pipe 5 that are communicated with the containing tank 3 of thermostatic bath 1, pure SF 6gas passes in containing tank 3 from admission line 4, and carry oil vapour after purging pasta and discharge from outlet pipe 5, outlet pipe 5 is connected with mineral oil content pick-up unit, represents the flow direction of gas in Fig. 1 shown in arrow.Conveniently control air inflow, admission line 4 is installed a flow control valve 6 to regulate SF 6the flow of gas, preferably, this device also comprises a flow detector to control pure SF 6the flow velocity of gas.
As a kind of concrete structure, containing tank 3 and the lid 2 of thermostatic bath 1 are rotary structure, and the opening of containing tank 3 seals by lid 2.As shown in Figure 1, lid 2 is the cylindrical of top seal, and admission line 4 and outlet pipe 5 lay respectively at the centre position of front end side wall and rear end sidewall.
In order to understand the present invention better, to utilizing aforesaid device for formulating to prepare SF 6the method of gas mineral oil in fluid content standard gas is introduced, and the method comprises the steps:
S1, in the containing tank 3 of thermostatic bath 1 load No. 32 machinery oil;
S2, the lid 2 front-end and back-end being respectively equipped with admission line 4 and outlet pipe 5 cover on the containing tank 3 of thermostatic bath 1, guarantee to seal containing tank 3;
S3, thermostatic bath 1 carry out heating temperature control in flash temperature to No. 32 machinery oil, and the flash temperature of No. 32 machinery oil is known and constant, and under flash temperature, No. 32 machinery oil just can produce oil vapour;
S4, by pure SF 6gas passes into admission line 4, makes SF 6gas purges pasta with constant flow velocity, and discharges from outlet pipe 5, the SF of discharge 6gas is the mineral oil content with normal concentration; So-called " normal concentration ", refers to that mineral oil content is wherein known, under the flash temperature (known) of No. 32 machinery oil, changes the SF passed through 6gas flow rate, i.e. adjustable SF 6the content of gas Plays mineral oil.Its quantivative approach is: passed into by calibrating gas in carbon tetrachloride solution, carbon tetrachloride solution can absorb the mineral oil in gas completely, absorb the change of quality before and after gas by weighing carbon tetrachloride solution, quantitative gas mineral oil in fluid content, does not repeat in this patent;
The escape hole of S5, outlet pipe 5 directly connects SF 6gas mineral oil in fluid content detection device, carries out calibration test to it.
To sum up, SF of the present invention 6the device for formulating of gas mineral oil in fluid content standard gas and compound method, solve and use SF 6gas mineral oil in fluid content detection device measures typical magnitude problem of transmission during mineral oil content, can realize SF 6gas mineral oil in fluid content detection device is directly calibrated, and makes its measurement data more accurate, and have the feature such as short, effective, easy to use consuming time, the safe operation for power equipment provides sound assurance more.
More than show and describe ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the present invention in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection scope of the present invention.

Claims (7)

1. a SF 6the device for formulating of gas mineral oil in fluid content standard gas, it is characterized in that, comprise: thermostatic bath and the lid for sealed thermostat bath, hold machinery oil in the containing tank of described thermostatic bath and heat, the front-end and back-end of described lid are respectively equipped with the admission line and outlet pipe that are communicated with thermostatic bath, pure SF 6gas passes in containing tank from admission line and purges pasta again from outlet pipe discharge, and described outlet pipe is connected with mineral oil content pick-up unit.
2. a kind of SF according to claim 1 6the device for formulating of gas mineral oil in fluid content standard gas, is characterized in that, described admission line is installed a flow control valve.
3. a kind of SF according to claim 1 6the device for formulating of gas mineral oil in fluid content standard gas, is characterized in that, also comprises a flow detector to control pure SF 6the flow velocity of gas.
4. a kind of SF according to claim 1 6the device for formulating of gas mineral oil in fluid content standard gas, is characterized in that, described machinery oil is No. 32 machinery oil.
5. a kind of SF according to claim 1 6the device for formulating of gas mineral oil in fluid content standard gas, is characterized in that, containing tank and the lid of described thermostatic bath are rotary structure.
6. a kind of SF according to claim 5 6the device for formulating of gas mineral oil in fluid content standard gas, is characterized in that, described lid is the cylindrical of top seal, and described admission line and outlet pipe lay respectively at the centre position of front end side wall and rear end sidewall.
7. utilize the device for formulating as described in any one of claim 1-6 to prepare SF 6the method of gas mineral oil in fluid content standard gas, is characterized in that, comprise the steps:
S1, in the containing tank of thermostatic bath load No. 32 machinery oil;
S2, front-end and back-end are respectively equipped with the cover cap of admission line and outlet pipe on the containing tank of thermostatic bath, guarantee to seal containing tank;
S3, thermostatic bath carry out heating temperature control in flash temperature to No. 32 machinery oil;
S4, by pure SF 6gas passes into admission line, makes SF 6gas purges pasta with constant flow velocity, and discharges from outlet pipe, the SF of discharge 6gas has the mineral oil content of normal concentration;
The escape hole of S5, outlet pipe directly connects SF 6gas mineral oil in fluid content detection device, carries out calibration test to it.
CN201510192483.4A 2015-04-21 2015-04-21 A kind of SF6The preparation method of gas mineral oil in fluid content standard gas Active CN104807682B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008285427A (en) * 2007-05-16 2008-11-27 Mitsubishi Rayon Co Ltd Gas blender and method for producing raw material gas for vapor-phase catalytic oxidation reaction
CN101352660A (en) * 2008-09-02 2009-01-28 浙江大学 Device for formulating low concentration gas and formulating method
CN201965045U (en) * 2010-12-16 2011-09-07 河南省中分仪器有限公司 Preparation device for standard oil sample of dissolved gas in transformer oil
CN203329640U (en) * 2013-06-27 2013-12-11 江苏物联网研究发展中心 Standard gas mixing device for gas testing system
CN103721640A (en) * 2014-01-14 2014-04-16 华北电力大学(保定) Mercury standard gas generator based on saturated vapor pressure method
CN203929721U (en) * 2014-06-27 2014-11-05 国家电网公司 The simple and easy device for formulating of a kind of transformer oil chromatographic test standard gas
CN204613000U (en) * 2015-04-21 2015-09-02 国家电网公司 A kind of SF 6the device for formulating of gas mineral oil in fluid content standard gas

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008285427A (en) * 2007-05-16 2008-11-27 Mitsubishi Rayon Co Ltd Gas blender and method for producing raw material gas for vapor-phase catalytic oxidation reaction
CN101352660A (en) * 2008-09-02 2009-01-28 浙江大学 Device for formulating low concentration gas and formulating method
CN201965045U (en) * 2010-12-16 2011-09-07 河南省中分仪器有限公司 Preparation device for standard oil sample of dissolved gas in transformer oil
CN203329640U (en) * 2013-06-27 2013-12-11 江苏物联网研究发展中心 Standard gas mixing device for gas testing system
CN103721640A (en) * 2014-01-14 2014-04-16 华北电力大学(保定) Mercury standard gas generator based on saturated vapor pressure method
CN203929721U (en) * 2014-06-27 2014-11-05 国家电网公司 The simple and easy device for formulating of a kind of transformer oil chromatographic test standard gas
CN204613000U (en) * 2015-04-21 2015-09-02 国家电网公司 A kind of SF 6the device for formulating of gas mineral oil in fluid content standard gas

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