CN214426796U - Non-contact photoelectric type power transformer conservator oil level monitoring device - Google Patents
Non-contact photoelectric type power transformer conservator oil level monitoring device Download PDFInfo
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- CN214426796U CN214426796U CN202120098438.3U CN202120098438U CN214426796U CN 214426796 U CN214426796 U CN 214426796U CN 202120098438 U CN202120098438 U CN 202120098438U CN 214426796 U CN214426796 U CN 214426796U
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Abstract
The utility model discloses a photoelectric type power transformer conservator oil level monitoring devices of non-contact, it includes photoelectric distance measuring device, photoelectric distance measuring device and the capsule flange cover connection at conservator top. The device has solved the easy trouble of mechanical oil level gauge meter that prior art adopted, can't accurate instruction oil level, and the precision is low, the reading degree of difficulty is great, is unfavorable for real time monitoring's problem, has simple structure, need not to change current transformer conservator structure, measures accurate, the fault rate is low, can export measured data to the intelligent network of power station, the characteristics of the data of being convenient for read.
Description
Technical Field
The utility model belongs to the technical field of power plant transformer oil level detects, concretely relates to photoelectric type power transformer conservator oil level monitoring devices of non-contact.
Background
High-voltage and ultrahigh-voltage power transformers of a power system are generally oil-immersed transformers, and insulating oil of the transformers plays an important role in heat dissipation and insulation. Monitoring the oil level change of an oil conservator connected with a transformer body is an important means for judging whether the oil quantity of the transformer is enough and whether oil leakage exists or not, and is an important content of operation and maintenance management work of the power transformer.
The existing oil level of the transformer is indicated by driving an external mechanical pointer type meter through a floating ball in an oil conservator, and the oil level of the transformer has the following defects: the floating ball is easily wrapped by the oil conservator capsule, so that the floating ball cannot float up and down, and the oil level indication is distorted; the floating ball runs for a long time, the connecting rod is easy to break, the floating ball leaks oil and loses buoyancy, and the gauge cannot normally indicate the oil level; the mechanical oil level gauge can only indicate the oil level on site, depends on visual observation, has no data output, cannot be connected to an intelligent network of a power station, and is not beneficial to the power station to realize real-time monitoring on the oil level of the transformer; the mechanical oil level meter has low precision, cannot accurately reflect the oil level change of the transformer oil conservator, and is not beneficial to realizing the early monitoring of abnormal states of the transformer, such as slow oil leakage, high temperature and the like; the floating ball is mechanically connected with the oil level indicator gauge, and sealing aging and transformer oil leakage are easy to occur after long-term operation; the mechanical oil level meter is required to be installed on an oil conservator higher than a transformer, the distance between the large power transformer and the ground is 5-6 meters, and accurate reading is difficult to read through visual inspection when an operator patrols. Therefore, it is necessary to design a non-contact oil level monitoring device for an oil conservator of a photoelectric power transformer to solve the above problems.
Disclosure of Invention
The utility model aims to solve the technical problem that a non-contact photoelectric type power transformer conservator oil level monitoring devices is provided, the mechanical oil level gauge that the device had solved prior art and adopted breaks down easily, unable accurate instruction oil level, and the precision is low, the reading degree of difficulty is great, be unfavorable for real time monitoring's problem, simple structure has, need not to change current transformer conservator structure, it is accurate to measure, the fault rate is low, can export measured data to the intelligent network of power station, be convenient for read data's characteristics.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a non-contact photoelectric type power transformer conservator oil level monitoring devices, it includes photoelectric distance measuring device, photoelectric distance measuring device and the capsule flange cover connection at conservator top.
Preferably, the photoelectric distance measuring device can be selected from a laser distance measuring sensor.
Preferably, one end of the probe of the photoelectric distance measuring device faces the oil surface at the bottom of the capsule.
Preferably, the photoelectric distance measuring device is accessed to a power station monitoring system; the photoelectric oil conservator oil level monitoring device outputs oil conservator oil level measurement data, converts the oil conservator oil level measurement data into a general industrial network protocol, and then sends the data to the intelligent power station monitoring system through a power station network, so that the oil level of the transformer can be brought into the intelligent power station monitoring system for unified monitoring and analysis.
Preferably, a sealing member is arranged at the joint of the photoelectric distance measuring device and the flange cover plate.
Preferably, the photoelectric monitoring signal is compatible with the conventional record of the reading of the conventional mechanical oil level indicator gauge of the transformer by presetting the temperature-oil level corresponding gauge in the analysis system, and the continuity of the monitoring record of the equipment is maintained.
The utility model provides a non-contact's photoelectric type power transformer conservator oil level monitoring devices's beneficial effect as follows:
the photoelectric distance measuring device transmits a distance signal to an analysis system, so that long-term continuous trend analysis of the oil level of the transformer conservator is realized, the workload of inspection personnel is reduced, and reading errors of a manual remote observation meter are eliminated; comprehensive analysis is carried out by combining with the monitoring signals of the transformer load, the environmental temperature and the transformer temperature, so as to realize the trend analysis of the health state of the transformer; the sensor is not in direct contact with the capsule in the conservator, so that the sensor is not influenced by breathing and pressure change of the capsule, and long-term monitoring data is reliable; the sensor is arranged in the capsule, so that the opening of the mechanical oil level gauge at the bottom of the oil conservator can be eliminated, and the hidden danger of oil leakage of the oil conservator is completely eradicated;
2, the mounting position of the photoelectric distance measuring device is isolated from transformer insulating oil, the structure of the transformer or an oil conservator is not required to be modified, holes do not need to be formed in a transformer shell and an oil conservator shell, insulating oil leakage or air entering into the transformer is avoided, a new transformer or an old transformer can be additionally mounted, the hidden danger of insulating oil leakage or internal air inlet is avoided, the energy of a photoelectric distance measuring system is low, the hidden danger of fire hazard is avoided, and the system is safe and efficient to use;
3, the photoelectric measurement precision of the device is high, the monitoring period can be set at will, the digital and non-contact measurement of the oil level monitoring of the transformer is realized, and the trend analysis of the oil level of the transformer is facilitated;
4, this patent is located the photoelectric distance measuring device in the transformer conservator and does not have movable part such as mechanical transmission, rotation, not difficult receiving of signal is disturbed with insulating oil contact, does not have the risk that floater and metal connecting rod puncture the conservator capsule.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic diagram of the present invention.
The reference numbers in the figures are: the device comprises an oil conservator 1, a capsule 2 and a photoelectric distance measuring device 3.
Detailed Description
As shown in figure 1, the non-contact photoelectric type oil level monitoring device for the oil conservator of the power transformer comprises a photoelectric distance measuring device 3, wherein the photoelectric distance measuring device 3 is connected with a flange cover plate of a capsule 2 on the top of the oil conservator 1.
Preferably, the photoelectric distance measuring device 3 can use a laser distance measuring sensor with model number of LAT 51 of Di-soric.
Preferably, the photoelectric distance measuring device 3 has one end facing the oil surface at the bottom of the capsule 2.
Preferably, the probe of the electro-optical distance measuring device 3 is perpendicular to the oil level at the bottom of the capsule 2.
Preferably, the photoelectric distance measuring device 3 is accessed to a power station monitoring system; the photoelectric oil conservator 1 oil level monitoring device outputs oil conservator 1 oil level measurement data, converts the oil conservator 1 oil level measurement data into a general industrial network protocol, and then sends the data to an intelligent power station monitoring system through a power station network, so that the oil level of a transformer can be brought into the intelligent power station monitoring system for unified monitoring and analysis.
Preferably, a sealing element is arranged at the joint of the photoelectric distance measuring device 3 and the flange cover plate; the sealing element can be sealed by a rubber sealing ring.
Preferably, the photoelectric monitoring signal is compatible with the conventional record of the reading of the conventional mechanical oil level indicator gauge of the transformer by presetting the temperature-oil level corresponding gauge in the analysis system, and the continuity of the monitoring record of the equipment is maintained.
The working principle of the non-contact photoelectric power transformer oil conservator oil level monitoring device is as follows:
the photoelectric distance measuring device 3 arranged on the flange of the capsule 2 of the conservator 1 emits laser pulses to the bottom of the capsule 2, and the laser pulses are reflected by the bottom of the capsule 2 and received by the sensor; the distance from the sensor to the bottom of the capsule 2 can be measured through calculation, the measurement precision of the sensor can reach more than 0.1mm, and the oil level monitoring requirement is met.
The volume of insulating oil in the power transformer is changed due to the influences of the change of the load of the transformer, the change of the environmental temperature and the like or the oil leakage of the transformer, so that the oil level in the oil conservator 1 is changed up and down; the photoelectric distance sensor is fixedly installed on a flange of the oil conservator 1 capsule 2, the distance between the flange and the bottom of the oil conservator 1 is known as D, and the oil level H of the oil conservator 1 can be calculated by measuring the distance X between the flange and the bottom of the oil conservator 1 capsule 2, namely H = D-X.
The oil level H of the oil outlet conservator 1 of the photoelectric oil conservator 1 oil level monitoring device is converted into a general industrial network protocol, and the general industrial network protocol is transmitted to an intelligent power station monitoring system through a power station network, so that the oil level of the transformer can be brought into the intelligent power station monitoring system for unified monitoring and analysis.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (3)
1. The utility model provides a non-contact photoelectric type power transformer conservator oil level monitoring devices which characterized in that: the device comprises a photoelectric distance measuring device (3), wherein the photoelectric distance measuring device (3) is connected with a flange cover plate of a capsule (2) on the top of an oil conservator (1); one end of the probe of the photoelectric distance measuring device (3) faces the oil surface at the bottom of the capsule (2).
2. The non-contact oil conservator oil level monitoring device of photoelectric power transformer of claim 1, wherein: and the photoelectric distance measuring device (3) is accessed to a power station monitoring system.
3. The non-contact oil conservator oil level monitoring device of photoelectric power transformer of claim 1, wherein: and a sealing element is arranged at the joint of the photoelectric distance measuring device (3) and the flange cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120098438.3U CN214426796U (en) | 2021-01-14 | 2021-01-14 | Non-contact photoelectric type power transformer conservator oil level monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120098438.3U CN214426796U (en) | 2021-01-14 | 2021-01-14 | Non-contact photoelectric type power transformer conservator oil level monitoring device |
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| CN214426796U true CN214426796U (en) | 2021-10-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018367A (en) * | 2021-11-04 | 2022-02-08 | 广东电网有限责任公司 | Transformer oil conservator oil level monitoring device |
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2021
- 2021-01-14 CN CN202120098438.3U patent/CN214426796U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018367A (en) * | 2021-11-04 | 2022-02-08 | 广东电网有限责任公司 | Transformer oil conservator oil level monitoring device |
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