CN109406994A - A kind of portable gas relay grave gas method of inspection - Google Patents
A kind of portable gas relay grave gas method of inspection Download PDFInfo
- Publication number
- CN109406994A CN109406994A CN201811211177.0A CN201811211177A CN109406994A CN 109406994 A CN109406994 A CN 109406994A CN 201811211177 A CN201811211177 A CN 201811211177A CN 109406994 A CN109406994 A CN 109406994A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
本发明公开了一种便携式气体继电器重瓦斯检验方法，本方法解决了目前现场气体继电器重瓦斯检验慢，校验设备体积大，操作麻烦等问题，本发明包括油箱、气体继电器和控制板，所述油箱内部中部通过管道连接换向阀，所述油箱内部左侧通过管道连接抽液泵，所述抽液泵通过第一油管连接油缸左侧，所述第一油管靠近抽液泵处设置有单向阀，所述第一油管位于单向阀上侧设置有比例阀，所述第一油管位于比例阀上侧设置有溢流阀；且本发明操作简单，能够快速、自动完成重瓦斯的校验，设备体积小，重量轻，减少检验耗费的成本，同时适合普及推广使用，通过显示屏可方便数据显示，通过操作面板方便进行操控调节。
The invention discloses a portable gas relay heavy gas inspection method. The method solves the problems of slow heavy gas inspection of the current on-site gas relay, large size of the verification equipment, and troublesome operation. The invention includes a fuel tank, a gas relay and a control board. The middle part of the inside of the oil tank is connected to the reversing valve through a pipeline, the left side of the inside of the oil tank is connected to a suction pump through a pipeline, and the suction pump is connected to the left side of the oil cylinder through a first oil pipe. One-way valve, the first oil pipe is provided with a proportional valve on the upper side of the one-way valve, and the first oil pipe is provided with a relief valve on the upper side of the proportional valve; and the invention is simple to operate, and can quickly and automatically complete heavy gas For calibration, the equipment is small in size and light in weight, which reduces the cost of inspection and is suitable for popularization and use.
Description
Technical field
The present invention relates to grave gas inspection technology fields, specifically provide a kind of portable gas relay grave gas inspection
Method.
Background technique
Gas relay is also known as Buchholz relay, and the deep fat stream and thermal current generated when being using transformer internal fault pushes
The element of the actuating of relay is the protection element of transformer, it is mounted in the union of transformer box cover and oil conservater, in transformation
Gas or the oil stream effect that device internal fault generates are lower to connect signal or trip(ping) circuit, makes related device signal an alert or makes
Transformer is cut off from power grid, has the function that protect transformer.Since gas relay is used as oil in oil-immersed transformer
The main protection of immersion transformer, plays the role of the safe operation of transformer key, and relevant test stone is put into effect in succession, because
How this accurately examines gas relay, and especially field test has great meaning for improving power supply system working efficiency
Justice.
Currently, existing gas on-site relay grave gas is examined slowly, calibration equipment volume is big, troublesome in poeration, can not be certainly
The dynamic verification for completing grave gas, while inconvenience is transported, each testing cost is high, and it is universal to be unfavorable for market.Therefore, this field
Technical staff provides a kind of portable gas relay grave gas method of inspection, to solve mentioned above in the background art ask
Topic.
Summary of the invention
The purpose of the present invention is to provide a kind of portable gas relay grave gas methods of inspection, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of equipment of the portable gas relay grave gas method of inspection, including fuel tank, gas relay and control panel,
Reversal valve is connected by pipeline in the middle part of the fuel tank internal, passes through pipeline connection drawing liquid pump, the pumping on the left of the fuel tank internal
Liquid pump is connected on the left of oil cylinder by the first oil pipe, and first oil pipe is provided with check valve, first oil at drawing liquid pump
Pipe, which is located on the upside of check valve, is provided with proportioning valve, and first oil pipe, which is located on the upside of proportioning valve, is provided with overflow valve, and described first
Oil pipe, which is located on the upside of overflow valve, is provided with reversal valve, and first oil pipe, which is located on the upside of reversal valve, is provided with pressure sensor, institute
It states reversal valve to connect on the right side of oil cylinder by the second oil pipe, the oil cylinder passes through on the left of mandril connecting spring chamber, in gas relay
Portion is provided with baffle, and the baffle is by the way that on the right side of mandril connecting spring chamber, the control panel is electrically connected gas relay, pressure
Sensor, reversal valve, proportioning valve and drawing liquid pump.
As a further solution of the present invention: the material of the oil cylinder is stainless steel.
As further scheme of the invention: the control panel includes display, mainboard and operation panel.
As further scheme of the invention: the model AT89S52 of the control panel, the type of the pressure sensor
Number be MIK-P300.
A kind of portable gas relay grave gas method of inspection, method includes the following steps:
1) gas relay is placed on station by staff as required first, and the connection of each equipment is installed
At, check it is errorless after carrying out detection test.
2) the operation panel starting pressed first on control panel is examined, and mainboard starts drawing liquid pump, control reversal valve, and oil passes through
Check valve, proportioning valve, overflow valve, reversal valve and the first oil pipe enter oil cylinder pushing oil cylinder and move ahead at this point, mainboard while detecting pressure
Pressure conversion is the thrust being applied on relay baffle by force snesor pressure, and the effect of proportioning valve is control oil pressure, is passed through
Change oil pressure and changes the thrust being applied on relay baffle；Gas relay during the work time, the impact force by oil stream
Displacement is generated, when the movement of gas relay grave gas, big displacement can be generated, after oil cylinder can not provide displacement generation at this time
Continuous thrust can provide continuous thrust by spring cavity after grave gas signalizing activity；Detection gas relay is thought highly of watt simultaneously
This signal while detecting grave gas signalizing activity, takes the thrust of preceding pressure value conversion and is converted to flow velocity as weight
Gas value, and thrust magnitude and heavy gas flow speed value are shown over the display, last master control borad automatic control reversing valve makees oil cylinder
Counter motion is moved to bottom position.
3) then, by observing and recording detection data, while pressure is compareed and flow velocity conversion table calculates result；And according to
Bernoulli equation, it can be deduced that when fluid levels flowing, in the flowing of fluid, pressure is related with flow velocity, flow velocity V big ground
Square pressure p is small, and flow velocity V small local pressure p is big；Therefore it is equal to stream by pushing baffle to apply different active forces to baffle
The change of speed；In the present invention, to avoid additional friction force from having an impact inspection result, all data use look-up table, pass through
Corresponding relationship is converted to flow velocity between actual measurement pressure and flow velocity.
4) it is closed and is detected by operation panel, by all parts dismantling, cleared up and properly collect, entire verification terminates.
Compared with the prior art, the advantages of the present invention are as follows:
1. present method solves current gas on-site relay grave gas to examine slowly, calibration equipment volume is big, troublesome in poeration
The problems such as.
2. operation of the present invention is simple, the verification of grave gas can be fast and automatically completed, equipment volume is small, and it is light-weight, it reduces
The cost expended is examined, while being suitble to promotion and popularization.
3. data can be facilitated to show by display screen, is facilitated by operation panel and carry out manipulation adjusting.
Detailed description of the invention
With reference to the accompanying drawing and embodiment the present invention is described in further detail:
Fig. 1 is detection model structure chart.
Fig. 2 is pressure and flow velocity conversion table.
In figure: 1- fuel tank, 2- drawing liquid pump, 3- check valve, 4- proportioning valve, 5- overflow valve, 6- reversal valve, 7- oil cylinder, 8-
One oil pipe, the second oil pipe of 9-, 10- spring cavity, 11- gas relay, 12- pressure sensor, 13- control panel.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~2, in the embodiment of the present invention, a kind of equipment of the portable gas relay grave gas method of inspection,
Including fuel tank 1, gas relay 11 and control panel 13, the 1 inside middle part of fuel tank connects reversal valve 6, the oil by pipeline
1 inside left of case connects drawing liquid pump 2 by pipeline, and the drawing liquid pump 2 is connected on the left of oil cylinder 7 by the first oil pipe 8, and described first
Oil pipe 8 is provided with check valve 3 at drawing liquid pump 2, and first oil pipe 8, which is located on the upside of check valve 3, is provided with proportioning valve 4, institute
It states the first oil pipe 8 and is located on the upside of proportioning valve 4 and be provided with overflow valve 5, first oil pipe 8, which is located to be provided on the upside of overflow valve 5, to be changed
To valve 6, first oil pipe 8, which is located on the upside of reversal valve 6, is provided with pressure sensor 12, and the reversal valve 6 passes through the second oil pipe 9
7 right side of oil cylinder is connected, the oil cylinder 7 is internally provided with baffle by 10 left side of mandril connecting spring chamber, gas relay 11, institute
Baffle is stated by the right side of mandril connecting spring chamber 10, the control panel 13 be electrically connected gas relay 11, pressure sensor 12,
Reversal valve 6, proportioning valve 4 and drawing liquid pump 2.
The material of the oil cylinder 7 is stainless steel.
The control panel 13 includes display, mainboard and operation panel.
The model AT89S52 of the control panel 13, the model MIK-P300 of the pressure sensor.
A kind of portable gas relay grave gas method of inspection, method includes the following steps:
1) gas relay 11 is placed on station by staff as required first, and each equipment is connected and is installed
It completes, is carrying out detection test after inspection is errorless.
2) the operation panel starting pressed first on control panel 13 is examined, and mainboard starts drawing liquid pump 2, control reversal valve 6, oil
Entering oil cylinder 7 by check valve 3, proportioning valve 4, overflow valve 5, reversal valve 6 and the first oil pipe 8 pushes oil cylinder 7 to move ahead at this point, mainboard
12 pressure of pressure sensor is detected simultaneously, is the thrust being applied on relay baffle by pressure conversion, the effect of proportioning valve 4 is
Oil pressure is controlled, changes the thrust being applied on relay baffle by changing oil pressure；Gas relay 11 during the work time, by
Impact force to oil stream generates displacement, when the movement of 11 grave gas of gas relay, can generate big displacement, at this time 7 nothing of oil cylinder
Method provides the subsequent thrust of displacement generation can provide continuous thrust by spring cavity 10 after grave gas signalizing activity；Together
When 11 grave gas signal of detection gas relays, while detecting grave gas signalizing activity, take preceding pressure value conversion
Thrust is simultaneously converted to flow velocity as grave gas value, and shows thrust magnitude and heavy gas flow speed value over the display, last master control borad
Automatic control reversing valve 6 makes oil cylinder do counter motion, is moved to bottom position.
3) then, by observing and recording detection data, while pressure is compareed and flow velocity conversion table calculates result；And according to
Bernoulli equation, it can be deduced that when fluid levels flowing, in the flowing of fluid, pressure is related with flow velocity, flow velocity V big ground
Square pressure p is small, and flow velocity V small local pressure p is big；Therefore it is equal to stream by pushing baffle to apply different active forces to baffle
The change of speed；In the present invention, to avoid additional friction force from having an impact inspection result, all data use look-up table, pass through
Corresponding relationship is converted to flow velocity between actual measurement pressure and flow velocity.
4) it is closed and is detected by operation panel, by all parts dismantling, cleared up and properly collect, entire verification terminates.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of portable gas relay grave gas method of inspection, which comprises the following steps:
1) gas relay (11) is placed on station by staff as required first, and the connection of each equipment is installed
At, check it is errorless after carrying out detection test；
2) the operation panel starting pressed first on control panel (13) is examined, and mainboard starts drawing liquid pump (2), control reversal valve (6),
Oil enters oil cylinder (7) by check valve (3), proportioning valve (4), overflow valve (5), reversal valve (6) and the first oil pipe (8) and pushes oil cylinder
(7) move ahead at this point, mainboard simultaneously detect pressure sensor (12) pressure, be to be applied to pushing away on relay baffle by pressure conversion
Power, the effect of proportioning valve (4) are control oil pressure, change the thrust being applied on relay baffle by changing oil pressure；Gas after
During the work time, the impact force by oil stream generates displacement to electric appliance (11), when the movement of gas relay (11) grave gas, meeting
Big displacement is generated, oil cylinder (7) can not provide the displacement and generate subsequent thrust at this time, can be in weight by spring cavity (10)
Continuous thrust is provided after Gas Signal movement；Detection gas relay (11) grave gas signal simultaneously, detects grave gas signal
While movement, takes the thrust of preceding pressure value conversion and be converted to flow velocity and shown as grave gas value, and over the display
Thrust magnitude and heavy gas flow speed value, last master control borad automatic control reversing valve (6) make oil cylinder do counter motion, are moved to bottom position；
3) then, by observing and recording detection data, while pressure is compareed and flow velocity conversion table calculates result；And it is exerted according to uncle
Sharp equation, it can be deduced that when fluid levels flowing, in the flowing of fluid, pressure is related with flow velocity, flow velocity V big place pressure
Strong p is small, and flow velocity V small local pressure p is big；Therefore it is equal to flow velocity by pushing baffle to apply different active forces to baffle
Change；In the present invention, to avoid additional friction force from having an impact inspection result, all data use look-up table, pass through reality
Corresponding relationship is converted to flow velocity between measurement pressure and flow velocity；
4) it is closed and is detected by operation panel, by all parts dismantling, cleared up and properly collect, entire verification terminates.
2. a kind of a kind of equipment of the portable gas relay grave gas method of inspection as described in claim 1, including fuel tank
(1), gas relay (11) and control panel (13), which is characterized in that the internal middle part of the fuel tank (1) is connected by pipeline commutates
Valve (6), fuel tank (1) inside left connect drawing liquid pump (2) by pipeline, and the drawing liquid pump (2) is connected by the first oil pipe (8)
It connects on the left of oil cylinder (7), first oil pipe (8) is provided with check valve (3) at drawing liquid pump (2), the first oil pipe (8) position
It is provided with proportioning valve (4) on the upside of check valve (3), first oil pipe (8), which is located on the upside of proportioning valve (4), is provided with overflow valve
(5), first oil pipe (8) is located on the upside of overflow valve (5) and is provided with reversal valve (6), and first oil pipe (8) is located at reversal valve
(6) upside is provided with pressure sensor (12), and the reversal valve (6) is described by the second oil pipe (9) connection oil cylinder (7) right side
Oil cylinder (7) is by the way that on the left of mandril connecting spring chamber (10), gas relay (11) is internally provided with baffle, and the baffle passes through top
On the right side of bar connecting spring chamber (10), the control panel (13) is electrically connected gas relay (11), pressure sensor (12), commutation
Valve (6), proportioning valve (4) and drawing liquid pump (2).
3. a kind of equipment of portable gas relay grave gas method of inspection according to claim 2, which is characterized in that
The material of the oil cylinder (7) is stainless steel.
4. a kind of equipment of portable gas relay grave gas method of inspection according to claim 2, which is characterized in that
The control panel (13) includes display, mainboard and operation panel.
5. a kind of equipment of portable gas relay grave gas method of inspection according to claim 2, which is characterized in that
The model AT89S52 of the control panel (13), the model MIK-P300 of the pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811211177.0A CN109406994B (en) | 2018-10-17 | 2018-10-17 | A portable gas relay heavy gas inspection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811211177.0A CN109406994B (en) | 2018-10-17 | 2018-10-17 | A portable gas relay heavy gas inspection method |
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| CN109406994A true CN109406994A (en) | 2019-03-01 |
| CN109406994B CN109406994B (en) | 2024-12-27 |
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| CN201811211177.0A Active CN109406994B (en) | 2018-10-17 | 2018-10-17 | A portable gas relay heavy gas inspection method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180260A (en) * | 2019-12-27 | 2020-05-19 | 广东电网有限责任公司电力科学研究院 | An intelligent gas relay device and its protection method |
| CN111207878A (en) * | 2020-04-16 | 2020-05-29 | 广东电网有限责任公司佛山供电局 | Air pressure critical value test system and method for heavy gas protection action |
| CN112147500A (en) * | 2020-09-25 | 2020-12-29 | 国网安徽省电力有限公司电力科学研究院 | Gas relay calibration device |
| CN114061980A (en) * | 2021-12-04 | 2022-02-18 | 国网山西省电力公司电力科学研究院 | Test platform and method for simulating gas relay malfunction |
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| CN111180260A (en) * | 2019-12-27 | 2020-05-19 | 广东电网有限责任公司电力科学研究院 | An intelligent gas relay device and its protection method |
| CN111207878A (en) * | 2020-04-16 | 2020-05-29 | 广东电网有限责任公司佛山供电局 | Air pressure critical value test system and method for heavy gas protection action |
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| CN112147500B (en) * | 2020-09-25 | 2023-10-31 | 国网安徽省电力有限公司电力科学研究院 | Gas relay calibration device |
| CN114061980A (en) * | 2021-12-04 | 2022-02-18 | 国网山西省电力公司电力科学研究院 | Test platform and method for simulating gas relay malfunction |
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| CN109406994B (en) | 2024-12-27 |
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