CN208818808U - Online Buchholz relay check system - Google Patents
Online Buchholz relay check system Download PDFInfo
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- CN208818808U CN208818808U CN201821484233.3U CN201821484233U CN208818808U CN 208818808 U CN208818808 U CN 208818808U CN 201821484233 U CN201821484233 U CN 201821484233U CN 208818808 U CN208818808 U CN 208818808U
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Abstract
The utility model relates to a kind of online Buchholz relay check systems, the first detection oil circuit including working oil path, for detecting heavy gas flow speed value, one end of first working tubing is connect with transformer, the other end and gas relay connect, and the first working tubing is equipped with the first valve, the second valve；Second working tubing one end is connect with gas relay, the other end and fuel reserve tank connect；First detection oil circuit includes the first detection oil pipe, the second detection oil pipe, and one end of the first detection oil pipe is connected on the first working tubing, and the other end of the first detection oil pipe is connect with fuel tank；The 5th valve, flowmeter are successively arranged on first detection oil pipe；Second detection oil pipe one end is connected on the second working tubing, and the other end of the second detection oil pipe is connected on fuel tank.The check system can detect the gas relay in work by real-time online as needed, and transformer does not need to power off when test.
Description
Technical field
The utility model relates to the calibration technology fields of Buchholz relay, and in particular to a kind of online Buchholz relay verification
System.
Background technique
Transformer is the electrical equipment for changing alternating voltage size, is occupied in the power system extremely important low
, largely using oil-immersed transformer in electric system.Oil-immersed transformer is widely used, when oil-immersed transformer is sent out
When raw internal fault, one of most important safeguard measure is exactly gas relay protection (also referred to as protection), it can send out in time
It is out of order and alarms and cut off faulty equipment from power grid rapidly, reduce the generation of electric power accident, improve power equipment operation
Security reliability.
When breaking down inside transformer or load ratio bridging switch and so that oil decomposition is generated gas or oil stream is caused to get excited,
The contact of gas relay acts, and issues alarm signal immediately, and connect control loop, cuts off faulty equipment automatically, makes accident
Loss is minimized.The sensitivity of gas relay protection depends on the adjusting of the flow speed value and gas volume of gas relay,
For the safe operation for ensuring power transformer, how gas relay heavy gas flow speed value and light device in Gas are accurately detected and adjusted
Body volumetric values seem most important.Gas relay calibration equipment is detection and adjusting gas relay heavy gas flow speed value and light
The dedicated unit of methane gas volumetric values, the charging floor are typically placed in room, cannot achieve live on-line testing.Such as authorization
A kind of gas-actuated relay calibration stand disclosed in the utility model patent of notification number CN201145734Y.
Utility model content
It is of the existing technology to solve the purpose of the utility model is to provide a kind of online Buchholz relay check system
Can not live on-line testing the technical issues of.
To achieve the above object, the online Buchholz relay check system of the utility model adopts the following technical scheme that online
Buchholz relay check system, the first detection oil circuit including working oil path, for detecting heavy gas flow speed value, working oil path packet
Include the first working tubing, the second working tubing, one end of the first working tubing connect with transformer, the other end and gas relay
Connection, the first working tubing are equipped with the first valve, the second valve, and the first valve, the second valve are by the one of the first working tubing
It holds and is set gradually on the direction of its other end；Second working tubing one end connect with gas relay, the other end and fuel reserve tank
Connection, the second working tubing are equipped with third valve, the 4th valve, and third valve, the 4th valve are by the one of the second working tubing
It holds and is set gradually on the direction of its other end；First detection oil circuit includes the first detection oil pipe, the second detection oil pipe, the first inspection
The one end for surveying oil pipe is connected on the part between the first valve, the second valve of the first working tubing, the first detection oil
The other end of pipe is connect with fuel tank, and fuel tank is connected with oil pump；The 5th valve, flowmeter are successively arranged on first detection oil pipe；The
Two detection oil pipe one end are connected on the part between third valve, the 4th valve of the second working tubing, the second detection
The other end of oil pipe is connected on the fuel tank, and the second detection oil pipe is equipped with the 6th valve, the 7th valve, the 6th valve, the
Seven valves are set gradually from one end of the second detection oil pipe to the direction of its other end.
Further preferably, the online Buchholz relay check system further includes for detecting light gas volumetric values
Second detection oil circuit, second detection oil circuit one end are connect with the fuel tank, and the other end is connected to being located on the second working tubing
On part between the gas relay and third valve, pressure sensor, the 8th valve are successively arranged on the second detection oil circuit
Door, metering pump.
Further preferably, the online Buchholz relay check system further includes into drain line, into drain line one end
It is connected on the part between flowmeter and fuel tank of the first detection oil pipe, the other end into drain line is connected to second
On the part between the 6th valve and the 7th valve for detecting oil pipe, the 9th valve is equipped with into drain line.
Further preferably, the first valve, the second valve, third valve, the 4th valve, the 5th valve, the 6th valve, the 7th
Valve, the 8th valve, the 9th valve are motor-driven valve.
The utility model has the beneficial effects that the online Buchholz relay check system of the utility model, detection oil circuit therein
It is directly installed on transformer use site, the gas relay in work can be detected by real-time online as needed, found in time
Problem avoids the bigger damage of equipment.When test, transformer does not need to power off, and does not influence normal electricity consumption, improves economy
Benefit；Operator does not need to remove gas relay yet, improves work efficiency, and also avoiding can when dismantling gas relay
It can be damaged caused by gas relay.
Detailed description of the invention
Fig. 1 is the schematic illustration of the online Buchholz relay check system of the utility model.
Corresponding title: 1, transformer, the 2, first motor-driven valve, the 3, second motor-driven valve, 4, gas relay are respectively marked in figure
Device, 5, third motor-driven valve, the 6, the 6th motor-driven valve, 7, fuel reserve tank, 8, pressure sensor, the 9, the 8th motor-driven valve, 10, flowmeter, 11,
Fuel tank, 12, metering pump, the 13, the 7th motor-driven valve, 14, oil pump, the 15, the 5th motor-driven valve, the 16, the 4th motor-driven valve, the 17, the 9th is electronic
Valve.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
The embodiment 1 of the online Buchholz relay check system of the utility model: as shown in Figure 1, online Buchholz relay school
Check system, first including working oil path, for detecting heavy gas flow speed value detects oil circuit, for detecting light gas volume
Second detection oil circuit of value.Working oil path includes the first working tubing, the second working tubing, one end of the first working tubing and change
The connection of depressor 1, the other end and gas relay 4 connect, and the first working tubing is equipped with the first motor-driven valve 2, the second motor-driven valve 3,
First motor-driven valve 2, the second motor-driven valve 3 are set gradually from one end of the first working tubing on the direction of its other end.Second work
Make oil pipe one end connect with gas relay 4, the other end and fuel reserve tank 7 connection.Second working tubing is equipped with third motor-driven valve
5, the 4th motor-driven valve 16, third motor-driven valve 5, the 4th motor-driven valve 16 are from one end of the second working tubing on the direction of its other end
It sets gradually.
First detection oil circuit includes the first detection oil pipe, the second detection oil pipe, and one end of the first detection oil pipe is connected to the
On the part between the first motor-driven valve 2, the second motor-driven valve 3 of one working tubing, the other end and oil of the first detection oil pipe
Case connection, fuel tank are connected with oil pump.The 5th motor-driven valve 15, flowmeter 10 are successively arranged on first detection oil pipe.
Second detection oil pipe one end be connected to the second working tubing between third motor-driven valve 5, the 4th motor-driven valve 16
Part on, second detection oil pipe the other end be connected on the fuel tank 11.Second detection oil pipe is equipped with the 6th motor-driven valve
6, the 7th motor-driven valve 13, the 6th motor-driven valve 6, the 7th motor-driven valve 13 from second detection oil pipe one end to the direction of its other end according to
Secondary setting.
Second detection oil circuit one end is connect with the fuel tank 11, and the other end, which is connected on the second working tubing, is located at gas
On part between relay 4 and third motor-driven valve 5, pressure sensor 8, the 8th motor-driven valve are successively arranged on the second detection oil circuit
9, metering pump.
Online Buchholz relay check system further includes being connected to the first detection oil into drain line one end into drain line
On the part between flowmeter 10 and fuel tank 11 of pipe, the position of the second detection oil pipe is connected into the other end of drain line
On part between the 6th motor-driven valve 6 and the 7th motor-driven valve 13.
The check system of the utility model is installed to beside transformer field in use, will test oil circuit, is connected to oil storage
On pipeline before case.The check system can detecte heavy gas flow speed value, light gas volumetric values and detection leakproofness
Energy.Specific work process is as follows:
When detecting heavy gas flow speed value, the 6th motor-driven valve 6,16 and of the 4th motor-driven valve are opened by computer control system
9th motor-driven valve 17, oil dropping apparatus refuel to suitable oil level, close the 4th motor-driven valve 16.Then the second motor-driven valve 3, third electricity are opened
Dynamic valve 5, the 6th motor-driven valve 6, the 7th motor-driven valve 13, the 5th motor-driven valve 15 and flowmeter 10, close other valves, and pass through frequency conversion
The oil stream of device control oil pump 14 exports, and is gradually increased the oil stream speed for flowing through under test gas relay 4 by 0, and acquire in real time
Flow velocity signal, when oil stream speed makes under test gas relay grave gas contact closure, computer control system receives weight watt
This action signal, control oil pump 14 stop, and contact closure moment, collected flow speed value was heavy gas flow speed value.
When detecting light gas volumetric values, makes to detect inside oil circuit and gas relay 4 full of oil, pass through computer control
System processed closes other valves, opens the 8th motor-driven valve 9, starts metering pump 12, and real-time detection simultaneously shows what metering pump 12 was discharged
Liquid volume, when 4 inner cavity pasta of gas relay, which drops to, makes light gas contact closure, computer control system is received gently
Gas action signal, control metering pump 12 stop, and contact closure moment collected liquid bulk product value is that light gas holds
Product value.
When detecting sealing performance, makes to detect inside oil circuit and gas relay 4 full of oil, be opened by computer control system
The 8th motor-driven valve 9 and metering pump 12 are opened, remaining valve is closed, is pressurized to liquid, and passes through 8 real-time detection pipeline of pressure sensor
Pressure and real-time display.When loine pressure reaches preset pressure, the 8th motor-driven valve 9 and metering pump 12, system are closed
Into state of pressure keeping, to be completed in predetermined time pressure maintaining, computer control system automatically records initial pressure value and terminates pressure value,
Whether the sealing performance to judge under test gas relay is qualified.
After being completed, the 6th motor-driven valve 6, the 4th motor-driven valve 16, the 9th motor-driven valve 17 and oil pump 14 are opened, other are closed
Oil in fuel tank is returned fuel reserve tank 7 by valve, is then shut off oil pump 14, the 6th motor-driven valve 6 and the 9th motor-driven valve 17.Transformer
When normal work, the first motor-driven valve 2, the second motor-driven valve 3, third motor-driven valve 5 and the 4th motor-driven valve 16 are opened, remaining valve closes
It closes.
The online Buchholz relay check system of the utility model has feature:
(1) the detection oil circuit of verification is directly installed on transformer use site, being capable of real-time online detection as needed
Gas relay in work finds the problem in time and issues alarm signal, while transferring data on the computer of control room,
Avoid the bigger damage of equipment.(2) when testing, transformer does not need to power off, and does not influence normal electricity consumption, improves economic effect
Benefit；Operator does not need to remove gas relay yet, improves work efficiency, and also avoids possible when disassembly gas relay
It is damaged caused by gas relay.(3) use the oil in transformer oil storage case as test medium, without providing for oneself and replacing
Experiment oil, economizes on resources.
The embodiment 2 of the online Buchholz relay check system of the utility model:
The present embodiment 2 and the difference of above-mentioned preferred embodiment 1 are, in the present embodiment 2, can use and provide experiment for oneself
Oil, at this point, can save in embodiment 1 into drain line, eliminates the 9th motor-driven valve, the 6th motor-driven valve and the 7th motor-driven valve are adopted
With one of them.
Each motor-driven valve in above-described embodiment, can also be solenoid valve.
The utility model is not limited to above-mentioned preferred forms, anyone can obtain under the enlightenment of the utility model
Other various forms of products, however, make any variation in its shape or structure, it is all that there is same as the present application or phase
Approximate technical solution, all falls within the protection scope of the utility model.
Claims (4)
1. online Buchholz relay check system, it is characterised in that: including working oil path, for detecting heavy gas flow speed value
One detection oil circuit, working oil path include the first working tubing, the second working tubing, and one end of the first working tubing and transformer connect
It connects, the connection of the other end and gas relay, the first working tubing is equipped with the first valve, the second valve, the first valve, the second valve
Door is set gradually from one end of the first working tubing on the direction of its other end；Second working tubing one end and gas relay
Connection, the other end and fuel reserve tank connect, and the second working tubing is equipped with third valve, the 4th valve, third valve, the 4th valve
It is set gradually from one end of the second working tubing on the direction of its other end；First detection oil circuit include first detection oil pipe,
Second detection oil pipe, first detection oil pipe one end be connected to the first working tubing between the first valve, the second valve
Part on, first detection oil pipe the other end connect with fuel tank, fuel tank is connected with oil pump；It is successively arranged on first detection oil pipe
5th valve, flowmeter；Second detection oil pipe one end be connected to the second working tubing between third valve, the 4th valve
Part on, second detection oil pipe the other end be connected on the fuel tank, second detection oil pipe be equipped with the 6th valve, the 7th
Valve, the 6th valve, the 7th valve are set gradually from one end of the second detection oil pipe to the direction of its other end.
2. online Buchholz relay check system according to claim 1, it is characterised in that: the online Buchholz relay
Check system further includes the second detection oil circuit for detecting light gas volumetric values, second detection oil circuit one end and the oil
Case connection, the other end are connected on the part between the gas relay and third valve on the second working tubing,
Pressure sensor, the 8th valve, metering pump are successively arranged on second detection oil circuit.
3. online Buchholz relay check system according to claim 1 or 2, it is characterised in that: the online gas after
Electric appliance check system further include into drain line, into drain line one end be connected to the first detection oil pipe be located at flowmeter and oil
On part between case, into drain line the other end be connected to the second detection oil pipe be located at the 6th valve and the 7th valve it
Between part on, into drain line be equipped with the 9th valve.
4. online Buchholz relay check system according to claim 3, it is characterised in that: the first valve, the second valve,
Third valve, the 4th valve, the 5th valve, the 6th valve, the 7th valve, the 8th valve, the 9th valve are motor-driven valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821484233.3U CN208818808U (en) | 2018-09-11 | 2018-09-11 | Online Buchholz relay check system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821484233.3U CN208818808U (en) | 2018-09-11 | 2018-09-11 | Online Buchholz relay check system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208818808U true CN208818808U (en) | 2019-05-03 |
Family
ID=66276750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821484233.3U Active CN208818808U (en) | 2018-09-11 | 2018-09-11 | Online Buchholz relay check system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208818808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957311A (en) * | 2018-09-11 | 2018-12-07 | 郑州赛奥电子股份有限公司 | Online Buchholz relay check system |
-
2018
- 2018-09-11 CN CN201821484233.3U patent/CN208818808U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957311A (en) * | 2018-09-11 | 2018-12-07 | 郑州赛奥电子股份有限公司 | Online Buchholz relay check system |
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