CN208091537U - A kind of non-intervention type transformer oil level detection device - Google Patents
A kind of non-intervention type transformer oil level detection device Download PDFInfo
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- CN208091537U CN208091537U CN201820551830.7U CN201820551830U CN208091537U CN 208091537 U CN208091537 U CN 208091537U CN 201820551830 U CN201820551830 U CN 201820551830U CN 208091537 U CN208091537 U CN 208091537U
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- ultrasonic wave
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- oil level
- transformer oil
- detection device
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Abstract
The utility model discloses a kind of non-intervention type transformer oil level detection devices, including ARM hosts, ultrasonic output circuit, ultrasonic wave transmitting probe, battery, ultrasonic wave receiving transducer and ultrasonic wave receiving circuit；The ARM hosts include A/D conversion circuits and comparator；The battery connects the ARM hosts；The ultrasonic output circuit connects the ARM hosts, and the ultrasonic wave transmitting probe connects the ultrasonic output circuit；The ultrasonic wave receiving transducer connects the ultrasonic wave receiving circuit, and the ultrasonic wave receiving circuit connects the A/D conversion circuits, and the A/D conversion circuits connect the comparator.It has the technical effect that：It can not ascend a height in terrestrial operation, it is safe to use not close to equipment live part, the practical oil level of transformer oil in transformer in operation can be quickly and accurately judged at the scene, improve repairing working efficiency.
Description
Technical field
The utility model is related to a kind of non-intervention type transformer oil level detection devices.
Background technology
Within the scope of the oil level of transformer oil will be maintained at certain in transformer, when oil level is excessively high, it may cause to become
Depressor internal oil pressure increases, while can also cause oil spilling.When oil level is too low, if oil level drops to transformer upper cover hereinafter, oil
The contact surface of transformer oil and air increases, and transformer oil is easy for oxidation deterioration and absorbs the moisture in air, causes transformation
The compressive resistance of device oil reduces, and to destroy the insulation performance of winding, Explosion of Transformer can be caused when serious, causes personnel and wealth
Production loss.
The method of measuring transformer oil oil level is generally the method for insertion type at present, and the method for insertion type needs installation to connect
Communicating pipe connect by siphunculus with insulating bar, and is opened below fuel tap again after communicating pipe and insulating bar are lifted to the height of setting
Hydraulic fluid port valve is taken, is turned off after read-record and takes hydraulic fluid port valve, removes communicating pipe and insulating bar, the process that oil level is measured in work
It is comparatively laborious, but each step is again all essential, needs the cooperation of two people, and take and be up to 40 minutes or more.Other one
Aspect, communicating pipe are usually plastics, and when oil level of measuring transformer oil needs the drain oil for opening Buchholz relay to connect
Communicating pipe the practical oil level of transformer oil is observed by pressure principle, transformer oil has the risk for leaking and making moist, in addition personnel
Communicating pipe is installed in the operation that need to ascend a height, and there are security risks.
The infrared measurement instrument of non-intervention type, it is necessary to on-demand creation measurer R&R research work tables, successively by tabular sequence
Measurer intersection is selected to be analyzed by surveyor and the level height of unit number measuring transformer oil, after input measurement data,
But its repeatability is bigger with reproducibility, wherein repeatability is shown as " equipment is poor ", and reproducibility embodies " people is poor ".
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of non-intervention type transformer oil level spy
Device is surveyed, it is safe and reliable, the measurement to transformer oil oil level in transformer can be rapidly completed.
Realizing a kind of technical solution of above-mentioned purpose is：A kind of non-intervention type transformer oil level detection device, including ARM master
Machine, ultrasonic output circuit, ultrasonic wave transmitting probe, battery, ultrasonic wave receiving transducer and ultrasonic wave receiving circuit；
The ARM hosts include A/D conversion circuits and comparator；
The battery connects the ARM hosts；
The ultrasonic output circuit connects the ARM hosts, the ultrasonic wave transmitting probe connects the ultrasonic wave hair
Raw circuit；
The ultrasonic wave receiving transducer connects the ultrasonic wave receiving circuit, and the ultrasonic wave receiving circuit connects the A/
D conversion circuits, the A/D conversion circuits connect the comparator.
Further, the ultrasonic output circuit includes the LC of MOSFET circuits and the connection MOSFET circuits humorous
Shake circuit, and the MOSFET circuits connect the ARM hosts, and the LC resonance circuit connects the ultrasonic wave transmitting probe.
Further, which further includes booster circuit, the booster circuit position
Between the MOSFET circuits and the battery.
Further, the ARM hosts are equipped with the first clock circuit, described in first clock circuit connection
MOSFET circuits.
Further, the ultrasonic wave receiving circuit includes the signal amplification circuit of the connection ultrasonic reception probe, even
Connect the filter circuit of the signal amplification circuit, and the signal condition of the connection filter circuit and the A/D conversion circuits
Circuit.
Further, the ARM hosts further include second clock circuit and memory, the second clock circuit and described
Memory is all connected with the A/D conversion circuits.
Further, the comparator connects two LED light.
Further, the comparator connection communication equipment.
Further, the ARM hosts, the ultrasonic output circuit, the ultrasonic wave transmitting probe, the battery,
The ultrasonic wave receiving transducer and the ultrasonic wave receiving circuit are respectively positioned in a shell.
Further, the shell is equipped with for adjusting the non-intervention type transformer oil level detection device in transformer
The height adjustment device of upper height and position.
Use a kind of technical solution of non-intervention type transformer oil level detection device of the utility model, including ARM master
Machine, ultrasonic output circuit, ultrasonic wave transmitting probe, battery, ultrasonic wave receiving transducer and ultrasonic wave receiving circuit；The ARM
Host includes A/D conversion circuits and comparator；The battery connects the ARM hosts；The ultrasonic output circuit connects institute
State ARM hosts, the ultrasonic wave transmitting probe connects the ultrasonic output circuit；Described in the ultrasonic wave receiving transducer connection
Ultrasonic wave receiving circuit, the ultrasonic wave receiving circuit connect the A/D conversion circuits, described in the A/D conversion circuits connection
Comparator.It has the technical effect that：It can not ascend a height in terrestrial operation, it is safe to use not close to equipment live part, it can
The practical oil level for quickly and accurately judging transformer oil in transformer in operation at the scene, improves repairing working efficiency.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of non-intervention type transformer oil level detection device of the utility model.
Specific implementation mode
Referring to Fig. 1, the inventor of the utility model is in order to preferably managing the technical solution of the utility model
Solution, is described in detail below by specifically embodiment, and in conjunction with attached drawing：
Electricity occurs for a kind of non-intervention type transformer oil level detection device of the utility model, including ARM hosts 1, ultrasonic wave
Road 2, ultrasonic wave transmitting probe 3, battery 4, booster circuit 5, ultrasonic wave receiving transducer 6, ultrasonic wave receiving circuit 7.
Wherein ARM hosts 1 include the first clock circuit 11, second clock circuit 12, A/D conversion circuits 13, comparator 14
With memory 15.
Wherein the first clock circuit 11 of ARM hosts 1 connects ultrasonic output circuit 2, and ultrasonic output circuit 2 includes connecting
Connect the MOSFET circuits 21 of 11 circuit of the first clock circuit and the LC resonance circuit 22 of connection MOSFET circuits 21.MOSFET electricity
Road 21 is driven by triode.
First clock circuit 11 periodically emits pulse signal, drives MOSFET circuits 21, thus by LC resonance circuit 22,
It is the ultrasonic wave of 2MHz to make ultrasonic wave transmitting probe tranmitting frequency.
Battery 4 is rechargeable lithium battary, and capacity is 1500 milliampere hour, and 3V working powers are provided to ARM master by voltage stabilizing
Machine 1 uses.In addition, being equipped with booster circuit 5 between MOSFET circuits 21 and battery 4, ultrasonic pulse is generated for LC resonance circuit 22
Required relatively high signal power source.By adjusting booster circuit 5, gain amplifier when ultrasonic wave transmitting can be controlled.
ARM hosts 1 are high temperature resistant, technical grade, low-voltage, low-power chip, ensure to meet work on the spot after battery 4 charges
The detection duration needed.
Ultrasonic wave receiving transducer 6 converts the remained shock signal of reflection to reflection electric signal by resonance.Ultrasonic signal is through anti-
It penetrates transmission and generates and will appear decaying in remained shock signal process, the amplitude for the remained shock signal that ultrasonic wave receiving transducer 6 receives is very small,
Therefore ultrasonic wave receiving circuit 7 includes：Signal amplification circuit 71, filter circuit 72 and signal conditioning circuit 73.Wherein signal is put
Big circuit 71 is used to filter the higher hamonic wave in reflection electric signal, signal tune for that will reflect electric signal amplification, filter circuit 72
The triangular signal that reason circuit 73 will be modulated to standard due to that will reflect electric signal.Signal conditioning circuit 73 connects in ARM hosts 1
A/D conversion circuits 13, A/D conversion circuits 13 connect second clock circuit 12, comparator 14 and memory 15.
Second clock circuit 12 controls ARM hosts 1 and acquires reflection electric signal, and controls and carry out transformer oil oil-level measurement work
The sequential of work.A/D conversion circuits 13 are used to the transmitting electric signal being converted to digital signal corresponding with transformer oil oil level,
Complete the acquisition of transformer oil oil level data.Memory 15 is used to store the data of transformer oil oil level.Comparator 14 is for sentencing
Whether the oil level of disconnected current transformer oil is higher than upper threshold or less than bottom threshold.Comparator 14 connects two LED light, is used for
Whether the oil level of the current preceding transformer oil of display is higher than upper threshold or less than bottom threshold.
ARM hosts 1, ultrasonic output circuit 2, ultrasonic wave transmitting probe 3, battery 4, booster circuit 5, ultrasonic wave, which receive, to be visited
First 6, ultrasonic wave receiving circuit 7 is respectively positioned in a shell, and the shell uses heat safe ABS material, can be equipped with insulation and stretch
Contracting bar is used for adjusting the height and position of the non-intervention type transformer oil level detection device on the transformer.
Other adjusting non-intervention type transformer oil level detection devices such as detection motion pulley can be also equipped on the shell
Height and position height adjustment device on the transformer, detection assist the fixing devices such as suction and ultrasonic wave frequency dividing prompt hair
Device is given birth to, and the communication equipment being connect with comparator 14, covers all voltage class, fully meet the reality of O&M work on the spot
Border demand.
The shell is coated with couplant, and staff directly visits a kind of non-intervention type transformer oil level of the utility model
The position for surveying the display oil level that device is attached to the transformer that needs detect nearby moves up and down, and checks, detects the pasta position of display
It whether consistent with reality sets.
A kind of non-intervention type transformer oil level detection device of the utility model is easy to be inhaled by transformer oil using ultrasonic wave
The remained shock signal that the characteristic of receipts, i.e. ultrasonic wave are reflected in the transformer oil being encountered in transformer compared with it is strong, when roomy characteristic
The oil level of measuring transformer oil.I.e. by the intensity of the ultrasonic signal of continuous measuring transformer wall emission, time width changing rule, come
Judge transformer oil liquid level whether in specified oil level.When the oil level of transformer oil is less than ultrasonic wave receiving transducer center,
Remained shock signal of the ultrasonic wave in transformer side wall is strong, and the duration is longer；When encountering transformer oil liquid level position, then phase therewith
Instead.Data processing is carried out after the remained shock signal amplification of reception and uses Dynamic comparison mode, can make the one of the utility model in this way
Kind non-intervention type transformer oil level detection device work does not have to adjust threshold value manually, can better adapt to different types of transformer
Steel plate thickness.
In addition, a kind of non-intervention type transformer oil level detection device of the utility model is using ultrasonic wave transmitting probe and surpasses
Acoustic receiver is popped one's head in form arranged apart, and reception remained shock signal is made more to stablize, and it is relatively reliable to compare output.
A kind of non-intervention type transformer oil level detection device test result rate of accuracy reached of the utility model is surveyed to 100%
The time is tried in 15 minutes, false oil level judging nicety rate 100%.Test result proves that transformer steel plate thickness does not have test result
Have an impact.Directional transmissions ultrasonic signal inside a kind of non-intervention type transformer oil level detection device of the utility model simultaneously,
Do not generate high-intensity magnetic field interference signal, using will not to transformer body and operation bring adverse effect.More importantly this practicality
A kind of use of novel non-intervention type transformer oil level detection device not only gives the false oil level of transformer oil storage to differentiate work
More LnkTools is brought, and connection interface need not be opened again, drained the oil by communicating pipe and check internal level height, is carried
High differentiation working efficiency.
A kind of non-intervention type transformer oil level detection device of the utility model, can not ascend a height in terrestrial operation, not close to
Equipment live part, it is safe to use, transformer oil in transformer can be quickly and accurately judged in operation at the scene
Practical oil level improves repairing working efficiency.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate that this practicality is new
Type, and be not used as the restriction to the utility model, as long as in the spirit of the utility model, to the above
Variation, the modification of embodiment will all be fallen in the Claims scope of the utility model.
Claims (10)
1. a kind of non-intervention type transformer oil level detection device, including ARM hosts, it is characterised in that：It further includes：Ultrasonic wave is sent out
Raw circuit, ultrasonic wave transmitting probe, battery, ultrasonic wave receiving transducer and ultrasonic wave receiving circuit；
The ARM hosts include A/D conversion circuits and comparator；
The battery connects the ARM hosts；
The ultrasonic output circuit connects the ARM hosts, the ultrasonic wave transmitting probe connects the ultrasonic wave and electricity occurs
Road；
The ultrasonic wave receiving transducer connects the ultrasonic wave receiving circuit, and the ultrasonic wave receiving circuit connects the A/D and turns
Circuit is changed, the A/D conversion circuits connect the comparator.
2. a kind of non-intervention type transformer oil level detection device according to claim 1, it is characterised in that：The ultrasonic wave
The LC resonance circuit that circuit includes MOSFET circuits and the connection MOSFET circuits occurs, the MOSFET circuits connect institute
ARM hosts are stated, the LC resonance circuit connects the ultrasonic wave transmitting probe.
3. a kind of non-intervention type transformer oil level detection device according to claim 2, it is characterised in that：The non-intervention type
Transformer oil level detection device further includes booster circuit, the booster circuit be located at the MOSFET circuits and the battery it
Between.
4. a kind of non-intervention type transformer oil level detection device according to claim 2, it is characterised in that：The ARM master
Machine is equipped with the first clock circuit, and first clock circuit connects the MOSFET circuits.
5. a kind of non-intervention type transformer oil level detection device according to claim 1, it is characterised in that：The ultrasonic wave
Receiving circuit includes the signal amplification circuit of the connection ultrasonic reception probe, connects the filtered electrical of the signal amplification circuit
Road, and connect the signal conditioning circuit of the filter circuit and the A/D conversion circuits.
6. a kind of non-intervention type transformer oil level detection device according to claim 1, it is characterised in that：The ARM master
Machine further includes second clock circuit and memory, and the second clock circuit and the memory are all connected with the A/D conversions electricity
Road.
7. a kind of non-intervention type transformer oil level detection device according to claim 1, it is characterised in that：The comparator
Connect two LED light.
8. a kind of non-intervention type transformer oil level detection device according to claim 1, it is characterised in that：The comparator
Connection communication equipment.
9. a kind of non-intervention type transformer oil level detection device according to claim 1, it is characterised in that：The ARM master
Machine, the ultrasonic output circuit, the ultrasonic wave transmitting probe, the battery, the ultrasonic wave receiving transducer and described super
Acoustic receiver circuit is respectively positioned in a shell.
10. a kind of non-intervention type transformer oil level detection device according to claim 9, it is characterised in that：The shell
It is equipped with the height adjustment device for adjusting non-intervention type transformer oil level detection device height and position on the transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820551830.7U CN208091537U (en) | 2018-04-18 | 2018-04-18 | A kind of non-intervention type transformer oil level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820551830.7U CN208091537U (en) | 2018-04-18 | 2018-04-18 | A kind of non-intervention type transformer oil level detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208091537U true CN208091537U (en) | 2018-11-13 |
Family
ID=64056452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820551830.7U Active CN208091537U (en) | 2018-04-18 | 2018-04-18 | A kind of non-intervention type transformer oil level detection device |
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| Country | Link |
|---|---|
| CN (1) | CN208091537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279055A (en) * | 2018-04-18 | 2018-07-13 | 国网上海市电力公司 | A kind of non-intervention type transformer oil level detection device |
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2018
- 2018-04-18 CN CN201820551830.7U patent/CN208091537U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279055A (en) * | 2018-04-18 | 2018-07-13 | 国网上海市电力公司 | A kind of non-intervention type transformer oil level detection device |
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