CN203743828U - Charged intelligent gas supply device of power SF6 transformer - Google Patents

Charged intelligent gas supply device of power SF6 transformer Download PDF

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Publication number
CN203743828U
CN203743828U CN201420054159.7U CN201420054159U CN203743828U CN 203743828 U CN203743828 U CN 203743828U CN 201420054159 U CN201420054159 U CN 201420054159U CN 203743828 U CN203743828 U CN 203743828U
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China
Prior art keywords
tonifying
valve
pressure
mutual inductor
electric power
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Application number
CN201420054159.7U
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Chinese (zh)
Inventor
郑孝章
林晓铭
宋仕江
叶强
林舒妍
康建生
连文杰
顾平良
吕延春
温小丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Nanping Power Supply Co of State Grid Fujian Electric Power Co Ltd
Shaowu Power Supply Co of State Grid Fujian Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Nanping Power Supply Co of State Grid Fujian Electric Power Co Ltd
Shaowu Power Supply Co of State Grid Fujian Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, State Grid Fujian Electric Power Co Ltd, Nanping Power Supply Co of State Grid Fujian Electric Power Co Ltd, Shaowu Power Supply Co of State Grid Fujian Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201420054159.7U priority Critical patent/CN203743828U/en
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Publication of CN203743828U publication Critical patent/CN203743828U/en
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Abstract

The utility model relates to a charged intelligent gas supply device of a power SF6 transformer. The device comprises a high-pressure gas cylinder, a three-way connecting pipe and a gas supply connecting pipe, wherein SF6 gas is stored in the high-pressure gas cylinder; a pressure reducing valve is arranged at an outlet of the high-pressure gas cylinder; a main pipe of the three-way connecting pipe is connected with the pressure reducing valve via a gas supply solenoid valve; a pressure sensor, an electric contact pressure gauge and a safety valve are installed on one branch pipe of the three-way connecting pipe, the branch pipe is connected with the gas supply connecting pipe via a gas supply valve, and an operating power SF6 transformer inflation/deflation valve needing gas supply is connected to the other end of the gas supply connecting pipe; a bypass valve is installed on the other branch pipe of the three-way connecting pipe; the gas supply solenoid valve and the pressure sensor are electrically connected with a control module; the gas supply solenoid valve is also electrically connected with the electric contact pressure gauge; the electric contact pressure gauge is also electrically connected with an alarm. The device avoids the defects of traditional gas supply devices and achieves safe, reliable, efficient, precise, economical and environment-friendly charged gas supply operation.

Description

A kind of electric power SF 6the charged intelligent making-up air device of mutual inductor
Technical field
The utility model relates to the charged intelligent making-up air device of a kind of electric power SF6 mutual inductor.
Background technique
Operating electric power SF 6mutual inductor, as its inner SF 6when gas pressure reduces to a certain extent, can have an accident not due to insulation or in the arc extinguishing ability in the time that discharge fault occurs in mutual inductor inside, even cause the serious consequence of mutual inductor blast, therefore operating electric power SF 6mutual inductor should carry out in time tonifying Qi in the time that its inner SF6 gas pressure is not enough.Electric power SF 6mutual inductor tradition tonifying Qi mode, mostly by artificial aerating valve hand-manipulated, cannot be according to SF 6the SF of mutual inductor inside 6the gas pressure tonifying Qi of steadily releiving, may be because staff neglects in tonifying Qi process, and tonifying Qi pressure is too large, causes SF in charging operation 6gas shock in electric power mutual-inductor, and cause electric power SF 6the accident of mutual inductor, even the danger of blast, has also avoided, as tonifying Qi bleed pressure deficiency, causing and pouring out gas, can cause equally electric power SF in charging operation 6the accident of mutual inductor, the even danger of blast.Owing to being manual control, there is sometimes aerating excessive, then again by unnecessary SF 6the direct emptying atmosphere of gas, causes waste and environmental pollution (electric power SF 6gas price costliness, emptying causes waste, also can damage the ozone layer).
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of charged intelligent making-up air device of electric power SF6 mutual inductor that can realize charged online tonifying Qi is provided.
To achieve these goals, the technical solution of the utility model is: a kind of electric power SF 6the charged intelligent making-up air device of mutual inductor, comprises and has SF 6gas cylinder, three connecting pipes and the tonifying Qi connecting leg of gas, the outlet of described gas cylinder is provided with reduction valve, the supervisor of described three connecting pipes connects reduction valve by tonifying Qi solenoid valve, on one branched pipe of described three connecting pipes, pressure transducer, pressure gauge with electric contact and safety valve are installed, and connecting tonifying Qi connecting leg by aeration valve, the described tonifying Qi connecting leg the other end connects the operating electric power SF that needs tonifying Qi 6mutual inductor Air filling and discharging valves, on another branched pipe of described three connecting pipes, bypass valve is installed, described tonifying Qi solenoid valve and pressure transducer are electrically connected at control module, and described tonifying Qi solenoid valve is also electrically connected at pressure gauge with electric contact, and described pressure gauge with electric contact is also electrically connected with alarm.
In above-mentioned technological scheme, the required tonifying Qi electric power SF of the online detection of described pressure transducer 6real-time gas pressure value in mutual inductor, and be converted into digital signal transfers to control module; The digital signal that described control module is come according to pressure transducer transmission is opened tonifying Qi solenoid valve automatically, and controls the open degree of tonifying Qi solenoid valve.
In above-mentioned technological scheme, described pressure gauge with electric contact is closed tonifying Qi solenoid valve automatically according to its predefined tonifying Qi limiting pressure value.
In above-mentioned technological scheme, described pressure gauge with electric contact is connected alarm automatically according to its predefined tonifying Qi limiting pressure value.
In above-mentioned technological scheme, described safety valve is automatically opened in the time that air compensating system internal pressure exceedes predefined tonifying Qi limiting pressure value, and described safety valve cuts out below air compensating system internal pressure drops to predefined tonifying Qi limiting pressure value time automatically.
In above-mentioned technological scheme, the using method of the charged intelligent making-up air device of this electric power SF6 mutual inductor, carries out: (1) connects the joint of tonifying Qi connecting leg the operating electric power SF that needs tonifying Qi according to the following steps 6the interface of mutual inductor Air filling and discharging valves, now aeration valve is closed; In the time that the two closely connects above, the joint of described tonifying Qi connecting leg backs down electric power SF 6mutual inductor Air filling and discharging valves makes its unlatching; (2) open aeration valve by predetermined compared with minor valve aperture, make electric power SF 6sF in mutual inductor 6gas pours making-up air device, opens bypass valve, washing away by remaining air, moisture in making-up air device; Work as SF 6after gas bleed making-up air device, close bypass valve, prepare to carry out charged tonifying Qi; (3) standard-sized sheet aeration valve, the main valve of unlatching gas cylinder, opens and regulates reduction valve to predetermined force value, opens control module; Detect electric power SF by pressure transducer 6gas pressure in mutual inductor, and detected real-time pressure value is converted to digital signal is sent to control module; Described control module is opened tonifying Qi solenoid valve according to predefined pressure difference, and dynamically regulates its open degree with the steady tonifying Qi of releiving; When tonifying Qi is when the predefined tonifying Qi limiting pressure value, described pressure gauge with electric contact is closed tonifying Qi solenoid valve automatically, connects alarm equipment alarm simultaneously, remind staff tonifying Qi to rated pressure value; Close the main valve of gas cylinder, close reduction valve, close aeration valve, exit tonifying Qi connecting leg and electric power SF 6the joint that mutual inductor Air filling and discharging valves connects, electric power SF6 mutual inductor Air filling and discharging valves is closed automatically, opens after bypass valve pressure release tonifying Qi end-of-job.
Compared with prior art, the utlity model has following beneficial effect: the utility model has been avoided the deficiency of traditional making-up air device, realized the charged tonifying Qi work of safe, reliable, efficient, accurate, saving, environmental protection, no matter from ensureing electric power SF 6mutual inductor carries out aspect the safety reliability of tonifying Qi under charging operation situation, or from saving and all there is huge advantage environmental protection aspect.
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Brief description of the drawings
Fig. 1 is the utility model embodiment's use phase diagram.
Fig. 2 is the utility model embodiment's intelligent automatic control functional-block diagram.
Fig. 3 is the control circuit figure of pressure gauge with electric contact design of pressure.
Fig. 4 is the main line map interlinking of pressure gauge with electric contact control tonifying Qi solenoid valve, alarm.
In figure: 1-gas cylinder, 2-reduction valve, 3-tonifying Qi solenoid valve, 4-tri-connecting pipes, 5-bypass valve, 6-alarm, 7-safety valve, 8-pressure gauge with electric contact, 9-pressure transducer, 10-aeration valve, 11-tonifying Qi connecting leg, 12-electric power SF 6mutual inductor Air filling and discharging valves, 13-electric power SF 6mutual inductor, A-high-voltage connection; DJ1-pressure gauge with electric contact pressure setting pressure limiting relay, K1-switch, C1-tonifying Qi solenoid valve, C2-alarm, N-ground connection, ∽ 220V-Ac 220V.
Embodiment
As shown in Fig. 1 ~ 4, a kind of electric power SF 6the charged intelligent making-up air device of mutual inductor, comprises and has SF 6gas cylinder 1, three connecting pipes 4 and the tonifying Qi connecting leg 11 of gas, the outlet of described gas cylinder 1 is provided with reduction valve 2, the supervisor of described three connecting pipes 4 connects reduction valve 2 by tonifying Qi solenoid valve 3, pressure transducer 9, pressure gauge with electric contact 8 and safety valve 7 are installed on one branched pipe of described three connecting pipes 4, and connecting tonifying Qi connecting leg 11 by aeration valve 10, described tonifying Qi connecting leg 11 the other ends connect the operating electric power SF that needs tonifying Qi 6mutual inductor Air filling and discharging valves 12, on another branched pipe of described three connecting pipes 4, bypass valve 5 is installed, described tonifying Qi solenoid valve 3 and pressure transducer 9 are electrically connected at control module, described tonifying Qi solenoid valve 3 is also electrically connected at pressure gauge with electric contact 8, and described pressure gauge with electric contact 8 is also electrically connected with alarm 6.
In the present embodiment, described control module can be carried out intelligent control tonifying Qi; Described pressure transducer 9 can detect required tonifying Qi electric power SF online 6real-time gas pressure value in mutual inductor 13, and be converted into digital signal transfers to control module; The digital signal that described control module can be come according to pressure transducer 9 transmission be opened tonifying Qi solenoid valve 3 automatically, and controls the open degree of tonifying Qi solenoid valve 3, and when pressure reduction is large, tonifying Qi solenoid valve 3 is opened large, and vice versa, all the time with a little more than electric power SF 6the constant pressure difference of mutual inductor 13 internal system releives, steadily tonifying Qi, avoided traditional making-up air device may be because tonifying Qi pressure is too large in tonifying Qi process, and causes electric power SF in charging operation 6the interior gas shock of mutual inductor 13, and cause electric power SF 6mutual inductor 13 accidents, even the danger of blast, has also avoided, as tonifying Qi bleed pressure deficiency, causing and pouring out gas, and insulating capacity deficiency in mutual inductor, can cause electric power SF in charging operation equally 6the accident of mutual inductor 13, even blast danger, strong guarantee the safe tonifying Qi work of electric power SF6 mutual inductor 13 under charging operation situation.
In the present embodiment, described pressure gauge with electric contact 8 can be closed tonifying Qi solenoid valve 3 automatically according to its predefined tonifying Qi limiting pressure value, and automatically connects alarm 6 and report to the police, and described alarm 6 also can be arranged on a branched pipe of three connecting pipes 4; In the time that making-up air device pressure reaches this setup pressure value, pressure gauge with electric contact 8 moves, and automatically closes tonifying Qi solenoid valve 3 and connects alarm 6 and send buzzing chimes of doom, notify staff tonifying Qi to rated pressure value.
In the present embodiment, in the time that air compensating system internal pressure exceedes predefined tonifying Qi limiting pressure value, and now pressure transducer 9, pressure gauge with electric contact 8 break down, or dead electricity is when uncontrollable, described safety valve 7 can be opened delivery system pressure automatically, pressure release, to ensure the safety of system, is played last pipe protection effect; In the time that air compensating system pressure drop arrives below setting value, described safety valve 7 cuts out automatically.Described bypass valve 5 is taken over the use of rear venting as gas bleed interface, connecting leg and bypass.
In the present embodiment, the using method of the charged intelligent making-up air device of this electric power SF6 mutual inductor, carry out according to the following steps::
(1) joint of tonifying Qi connecting leg 11 is connected to the operating electric power SF that needs tonifying Qi 6the interface of mutual inductor Air filling and discharging valves 12, now the aeration valve 10 on tonifying Qi connecting leg 11 is closed; As joint and the electric power SF of tonifying Qi connecting leg 11 6when the interface of mutual inductor Air filling and discharging valves 12 closely connects above, back down electric power SF 6mutual inductor Air filling and discharging valves 12 makes its unlatching;
(2) by predetermined, compared with minor valve aperture, a little opens the aeration valve 10 on tonifying Qi connecting leg 11, makes electric power SF 6sF in mutual inductor 13 6gas pours making-up air device, opens the bypass valve 5 on three connecting pipes 4, washing away by remaining air, moisture in making-up air device; Work as SF 6after gas bleed making-up air device, close the bypass valve 5 on three connecting pipes 4, prepare to carry out charged tonifying Qi;
(3) aeration valve 10 on standard-sized sheet tonifying Qi connecting leg 11, opens the main valve of gas cylinder 1, opens and regulate reduction valve 2 to 1MPa(or according to electric power SF 6the interior filled rated working pressure of mutual inductor 13 is determined reduction valve 2 pressure), open control module; Detect electric power SF by pressure transducer 9 6gas pressure in mutual inductor 13 systems, and detected real-time pressure value is converted to digital signal is sent to control module; Described control module is opened the tonifying Qi solenoid valve 3 on three connecting pipes 4 according to predefined pressure difference, and dynamically regulates its open degree, with all the time a little more than electric power SF 6the steady tonifying Qi of releiving of the interior gas pressure of mutual inductor 13; When tonifying Qi is when the predefined tonifying Qi limiting pressure value, described pressure gauge with electric contact 8 is closed tonifying Qi solenoid valve 3 automatically, connects alarm 6 simultaneously and reports to the police, remind staff tonifying Qi to rated pressure value; Close the main valve of gas cylinder 1, close reduction valve 2, close aeration valve 10, exit tonifying Qi connecting leg 11 and electric power SF 6the joint that mutual inductor Air filling and discharging valves 12 connects, electric power SF 6mutual inductor Air filling and discharging valves 12 is closed automatically, opens after bypass valve 5 pressure releases tonifying Qi end-of-job.
In the present embodiment, in step (1), this electric power SF 6the charged intelligent making-up air device of mutual inductor can Assembling, when assembling, first the joint of tonifying Qi connecting leg 11 is connected to electric power SF 6the interface of mutual inductor Air filling and discharging valves 12, then by a branched pipe interface of the aeration valve of tonifying Qi connecting leg 11 the other ends 10 interface connecting tee connecting legs 4, finally supervisor's interface of three connecting pipes 4 is connected on reduction valve 2 interfaces of high-pressure cylinder outlet by tonifying Qi solenoid valve 3.
In the present embodiment, in step (3), this electric power SF 6the charged intelligent making-up air device of mutual inductor can field stripping so that collection, at tonifying Qi connecting leg 11 and electric power SF 6mutual inductor Air filling and discharging valves 12 departs from after connection, and tonifying Qi connecting leg 11, three connecting pipes 4, tonifying Qi solenoid valve 3, reduction valve 2 etc. are removed, cased.
The foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.

Claims (5)

1. an electric power SF 6the charged intelligent making-up air device of mutual inductor, is characterized in that: comprise and have SF 6gas cylinder, three connecting pipes and the tonifying Qi connecting leg of gas, the outlet of described gas cylinder is provided with reduction valve, the supervisor of described three connecting pipes connects reduction valve by tonifying Qi solenoid valve, on one branched pipe of described three connecting pipes, pressure transducer, pressure gauge with electric contact and safety valve are installed, and connecting tonifying Qi connecting leg by aeration valve, the described tonifying Qi connecting leg the other end connects the operating electric power SF that needs tonifying Qi 6mutual inductor Air filling and discharging valves, on another branched pipe of described three connecting pipes, bypass valve is installed, described tonifying Qi solenoid valve and pressure transducer are electrically connected at control module, and described tonifying Qi solenoid valve is also electrically connected at pressure gauge with electric contact, and described pressure gauge with electric contact is also electrically connected with alarm.
2. electric power SF according to claim 1 6the charged intelligent making-up air device of mutual inductor, is characterized in that: the required tonifying Qi electric power SF of the online detection of described pressure transducer 6real-time gas pressure value in mutual inductor, and be converted into digital signal transfers to control module; The digital signal that described control module is come according to pressure transducer transmission is opened tonifying Qi solenoid valve automatically, and controls the open degree of tonifying Qi solenoid valve.
3. electric power SF according to claim 1 6the charged intelligent making-up air device of mutual inductor, is characterized in that: described pressure gauge with electric contact is closed tonifying Qi solenoid valve automatically according to its predefined tonifying Qi limiting pressure value.
4. electric power SF according to claim 1 6the charged intelligent making-up air device of mutual inductor, is characterized in that: described pressure gauge with electric contact is connected alarm automatically according to its predefined tonifying Qi limiting pressure value.
5. electric power SF according to claim 1 6the charged intelligent making-up air device of mutual inductor, it is characterized in that: described safety valve is automatically opened in the time that air compensating system internal pressure exceedes predefined tonifying Qi limiting pressure value, described safety valve cuts out below air compensating system internal pressure drops to predefined tonifying Qi limiting pressure value time automatically.
CN201420054159.7U 2014-01-28 2014-01-28 Charged intelligent gas supply device of power SF6 transformer Active CN203743828U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420054159.7U CN203743828U (en) 2014-01-28 2014-01-28 Charged intelligent gas supply device of power SF6 transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420054159.7U CN203743828U (en) 2014-01-28 2014-01-28 Charged intelligent gas supply device of power SF6 transformer

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103742782A (en) * 2014-01-28 2014-04-23 国家电网公司 Device and method for powered intelligent gas supplementing of power SF6 (Sulfur Hexafluoride) transducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103742782A (en) * 2014-01-28 2014-04-23 国家电网公司 Device and method for powered intelligent gas supplementing of power SF6 (Sulfur Hexafluoride) transducer
CN103742782B (en) * 2014-01-28 2015-09-02 国家电网公司 A kind of electric power charged intelligent making-up air device of SF6 mutual inductor and supplementing method for air thereof

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