CN209910853U - Portable transformer thermometer calibration device - Google Patents
Portable transformer thermometer calibration device Download PDFInfo
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- CN209910853U CN209910853U CN201920854587.0U CN201920854587U CN209910853U CN 209910853 U CN209910853 U CN 209910853U CN 201920854587 U CN201920854587 U CN 201920854587U CN 209910853 U CN209910853 U CN 209910853U
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- 230000017525 heat dissipation Effects 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 238000012795 verification Methods 0.000 claims description 13
- 239000000523 sample Substances 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- 238000003878 thermal aging Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The application provides a concrete structure that has portable transformer thermometer calibration equipment. Through providing the higher transformer thermometer calibration equipment of integrated level among this technical scheme, with oil storage device, oil pump, temperature control device to and the integrated to the device body of calibration measuring device inside, compare in prior art in current calibration equipment, simple structure, portable easily carries, is applicable to very much and uses widely.
Description
Technical Field
The utility model particularly relates to a portable transformer thermometer calibration equipment.
Background
The insulation aging of the power transformer is mainly caused by the combined action of temperature, humidity, oxidation and degraded substances decomposed in oil, but the aging speed is mainly determined by the temperature. According to the research results: when the winding hot spot temperature of the oil-immersed power transformer is within the range of 80-140 ℃, the relative thermal aging rate of the transformer is doubled when the winding temperature is increased by 6 ℃, and the service life of the transformer is correspondingly reduced by half. Therefore, the temperature inside the transformer is accurately monitored in real time, technicians can find potential faults of the transformer in time, the running risk of the transformer is reduced, and the service life of the transformer is prevented from being shortened due to abnormal rise of the temperature inside the transformer. According to the requirements of national grid company standard Q/GDW1168-2013 State overhaul test regulations for power transmission and transformation equipment, thermometers of transformers of 110kV and above should be checked once every three years.
The most prominent thermometer calibration method at present is performed by professionals of the electrical testing team on the professional instruments of the electrical testing room. Due to the fact that the transformer substation is short in pre-test period and long in short path, the thermometer is disassembled on the pre-test site, then the thermometer is sent back to the transformer substation overhaul room for verification, and finally the thermometer is sent back to the site for installation, so that the actual requirements cannot be met. At present, a new thermometer is checked in advance, and then the new thermometer is replaced by a transformer substation on the day of pre-test, so that the operation and maintenance cost of the transformer equipment is greatly increased. Therefore, a portable transformer thermometer calibration device needs to be developed, the thermometer can be accurately calibrated on site, the calibration efficiency of the thermometer is improved, and the operation and maintenance cost of the power transformation equipment can be reduced.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a portable transformer thermometer calibration device which can accurately calibrate a thermometer on site, improve the calibration efficiency of the thermometer, and reduce the operation and maintenance cost of a power transformation device, compared with the prior art.
A portable transformer thermometer calibration device, comprising: the device comprises a device body with an opening at the top and a hollow interior and an operation panel covering one side of the opening of the device body; the device body is also internally provided with an oil storage device, an oil pump connected with one side of the oil storage device through a pipeline and a cooling device matched and connected with the pipeline; the side wall of the oil storage device is provided with two outlets which are respectively connected with the oil pump through pipelines; the top of the oil storage device is provided with a heating rod with the bottom immersed into the oil storage device and two insertion holes which are respectively used for placing a temperature probe and a thermometer to be checked; the operation panel is provided with a temperature control device and a checking and measuring device which are electrically connected with the heating rod, and a temperature probe of the temperature control device enters one of the insertion holes; the verification measurement device includes: indicator lights, ammeters or voltmeters.
According to the technical scheme provided by the embodiment of the application, the cooling device comprises: the heat dissipation pipeline is wrapped on the pipeline, and a heat dissipation fan is arranged in the heat dissipation pipeline; and the side wall of the heat dissipation pipeline is provided with a vent hole.
According to the technical scheme provided by the embodiment of the application, the method further comprises the following steps: can connect in around set on the pipeline establishes the pipeline, set the both ends of establishing the pipeline and all expose heat dissipation pipeline lateral wall opening and its both ends can link to each other with outside cooling device.
According to the technical scheme provided by the embodiment of the application, the other side still is equipped with the strutting arrangement who is used for erectting the thermometer that waits to check up on the device body opening.
According to the technical scheme provided by the embodiment of the application, the supporting device comprises: the device comprises an inverted U-shaped bracket and an accommodating table, wherein the inverted U-shaped bracket is bridged on an opening of the device body; the containing table is surrounded by a limiting plate.
According to the technical scheme provided by the embodiment of the application, one side, relatively close to the operation panel, of the limiting plate is provided with an opening for accommodating the wire to penetrate through.
To sum up, the application provides a concrete structure of portable transformer thermometer calibration equipment. Through providing the higher transformer thermometer calibration equipment of integrated level among this technical scheme, with oil storage device, oil pump, temperature control device to and the integrated to the device body of calibration measuring device inside, compare in prior art in current calibration equipment, simple structure, portable easily carries, is applicable to very much and uses widely.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic overall structure of the present application;
FIG. 2 is a schematic diagram of the structure of an oil storage device in the present application;
FIG. 3 is a schematic diagram of the structure of the oil storage device, the oil pump and the cooling device in the device body in the application;
FIG. 4 is a schematic top view of the overall structure of the present application;
FIG. 5 is a schematic structural diagram of a first embodiment of a cooling apparatus of the present application;
fig. 6 is a schematic structural view of a second embodiment of the cooling device of the present application;
fig. 7 is a schematic structural view of the support device of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, a portable transformer thermometer calibration device includes: the device comprises a device body 1 with an open top and a hollow interior and an operation panel 2 covering one side of the opening of the device body 1.
Wherein:
the device body is opened at the top, is hollow inside and is used for accommodating the oil storage device, the oil pump and related pipelines.
And the operation panel is used for realizing the control of various devices in the device body.
Referring to fig. 2 and 3, an oil storage device 3, an oil pump 4 connected to one side of the oil storage device 3 through a pipeline, and a cooling device 5 connected to the pipeline are further disposed in the device body 1; the side wall of the oil storage device 3 is provided with two outlets which are respectively connected with the oil pump through pipelines; the top of the oil storage device 3 is provided with a heating rod 6 with the bottom immersed into the oil storage device 3 and two insertion holes 7 used for placing a temperature probe and a thermometer to be checked respectively.
This design gives the means of mounting the various components within the body of the device.
And the oil storage device 3 is used for storing the transformer oil and is used for arranging the thermometer to be verified. In order to heat the transformer oil in the oil storage device to a preset temperature, a heating rod 6 with the bottom immersed into the oil storage device 3 is arranged at the top of the oil storage device 3. Wherein: heating a rod: the oil storage device is controlled by the temperature control device and is used for heating the transformer oil in the oil storage device until the transformer oil is heated to a preset temperature.
In order to ensure that the temperature of the transformer oil in the oil storage device is uniform, the side wall of the oil storage device 3 is provided with two outlets which are respectively connected with the oil pump through pipelines. When the oil pump is started, the transformer oil of the oil storage device 3 can be circulated under the action of the oil pump, so that the transformer oil in the oil storage device can be uniformly heated to a preset temperature as soon as possible.
Referring to fig. 4, a temperature control device 8 and a calibration and measurement device 9 electrically connected to the heating rod 6 are disposed on the operation panel 2, and a temperature probe of the temperature control device 8 enters one of the insertion holes 7; the verification measurement device 9 includes: an indicator light 10, an ammeter 11 or a voltmeter 12.
In this embodiment, for can guarantee to heat transformer oil to predetermined temperature, operating panel 2 is last to be equipped with and to be connected temperature control device 8 with heating rod 6 electricity, temperature control device's temperature probe is put into one of them plug-in hole at oil storage device top for the temperature of real-time supervision transformer oil. Preferably, the type of the temperature control device is as follows: HS-650.
In actual use, firstly, the preset temperature of the temperature control device is set, then, the temperature control device is started, the heating rod starts to work, the oil pump is started simultaneously, the transformer oil in the oil storage device starts to be integrally heated, and the temperature control device controls the heating rod to stop heating until the temperature probe monitors that the temperature of the transformer oil reaches the preset temperature.
In addition, a thermometer to be verified needs to be inserted into another insertion hole of the top in advance before actual use.
For the indicator lights in the verification measuring device 9, the number of the indicator lights can be three, and the number of the indicator lights is consistent with that of the nodes to be verified on the thermometer to be verified, namely: the three pilot lamps correspond three different check nodes respectively, and in specific experiment, the thermometer that will wait to check is three in proper order to wait check node and three pilot lamp be connected can.
For the voltmeter or ammeter in the verification and measurement device 9, the node to be verified of some types of thermometers to be verified sometimes outputs voltage or current, and at this time, the node to be verified is electrically connected with the voltmeter or ammeter and can be used as a reference value for verification and measurement.
The specific verification steps are as follows:
the first step is as follows: and putting the transformer oil into an oil storage device. The operation method comprises the following steps: since one insertion hole in the top of the oil reservoir needs to be inserted with the temperature control probe of the temperature control device, the other insertion hole can serve as the oil filling hole.
The second step is that: the temperature probe of the thermometer to be verified is placed in another insertion hole at the top of the oil storage device, and the following needs to be noted: the temperature probe of the thermometer to be checked is totally immersed in the transformer oil.
The third step: and completing the line connection of the thermometer to be verified. The operation method comprises the following steps: connecting a node to be checked on the thermometer to be checked with an indicator lamp in an operation panel by a lead; or, the node to be checked is connected with an ammeter or a voltmeter on the operation panel by a lead.
The fourth step: and setting the preset temperature of the temperature control device. And (4) switching on an external power supply, electrifying the temperature control device, setting the temperature of the temperature control device to be the setting temperature of the node to be checked, and starting to heat the transformer oil by the heating rod. And simultaneously, the oil pump is started, so that the transformer oil can be uniformly heated to a preset temperature.
The fifth step: and (4) judging the standard: when the heating rod heats the transformer oil to the setting temperature, the temperature control device controls the heating rod to stop heating.
If the node to be checked is connected with an indicator lamp in the operation panel by a lead: whether the indicator lamp is lighted or not is checked, if the indicator lamp is not lighted, the set temperature of the thermometer to be verified is not in accordance with the actual temperature, and the thermometer needs to be re-set until the indicator lamp is lighted.
If the node to be verified is connected with an ammeter or a voltmeter on the operation panel by a lead: and (4) checking the specification, determining a current value or a voltage value corresponding to the set temperature, comparing the current value or the voltage value with a current value or a voltage value of a ammeter or a voltmeter on the operation panel, and if the error exceeds a specified value, indicating that the current output module or the voltage output module of the thermometer fails and needs to be replaced.
The specific implementation process is as follows:
the types are as follows: the setting temperature of the thermometer to be verified of BWY-804A (TH) is 55 degrees and 80 degrees. The thermometer to be verified has no voltage current output.
And when the setting temperature of the thermometer to be verified is 55 ℃, verifying by adopting the fourth step and the fifth step in the method. Because only the indicator light is connected, the judgment standard is as follows: if the node to be checked is connected with an indicator lamp in the operation panel by a lead: whether the indicator lamp is lighted or not is checked, if the indicator lamp is not lighted, the set temperature of the thermometer to be verified is not in accordance with the actual temperature, and the thermometer needs to be re-set until the indicator lamp is lighted.
If the verification is qualified, continuously verifying the state that the setting temperature of the thermometer to be verified is 80 degrees, namely, repeating the fourth step: considering that the transformer oil temperature is 55 degrees, the preset temperature of the temperature control device needs to be reset to 80 degrees, and the heating rod starts to heat until the transformer oil reaches 80 degrees. Then, the verification judgment is performed with reference to the fifth step.
When the two set temperature values are verified, another thermometer to be verified needs to be replaced, and the verification process is the process from the second step to the fifth step in the process. But it should be noted that: at the moment, the temperature of the transformer oil is 80 ℃, and the transformer oil needs to be cooled to 55 ℃, and the specific method comprises the following steps: and resetting the preset temperature of the temperature control device to be 55 ℃, starting the cooling device and the oil pump, and controlling the cooling device to stop moving by the temperature control device until the oil temperature of the transformer is reduced to 55 ℃ in the circulating process of the oil pump. And then the verification operation in the fifth step is performed.
If the temperature is qualified, continuously checking the state that the setting temperature of the thermometer to be checked is 80 degrees, namely, repeating the fourth step: considering that the transformer oil temperature is 55 degrees, the preset temperature of the temperature control device needs to be reset to 80 degrees, and the heating rod starts to heat until the transformer oil reaches 80 degrees. Then, the verification is performed with reference to the fifth step described above.
Example two is a specific implementation process:
the types are as follows: BWR-04YJ (TH) is set at 55 and 80 degrees. The thermometer to be verified has a voltage current output.
In contrast to the specific implementation example, only the decision criterion is modified in this process. The rest is the same as the embodiment example.
It should be noted that, the calibration method for the thermometer to be calibrated is a basic working procedure known to those skilled in the art, and details are not described herein, and the present application aims to provide a portable transformer thermometer calibration apparatus that facilitates the above working process.
Referring to fig. 5, the cooling device 5 includes: a heat dissipation pipeline 13 wrapped on the pipeline, and a heat dissipation fan 14 is arranged in the heat dissipation pipeline 13; and a vent hole is formed in the side wall of the heat dissipation pipeline 13.
Specifically, the present embodiment shows a specific structure of the cooling device.
Wherein:
the heat dissipation pipeline is wrapped on the outer wall of the pipeline, and two ends of the heat dissipation pipeline are sealed. The heat sink tubing may be wrapped around some or all of the tubing, taking into account specific cost requirements.
In order to facilitate cooling, a heat dissipation fan 14 is arranged in the heat dissipation pipeline in a matched mode, when the heat dissipation fan is started, the heat dissipation fan takes away the heat of the transformer oil flowing through the pipeline until the temperature of the transformer oil is reduced to a preset temperature, and the side wall of the heat dissipation pipeline is provided with a ventilation hole, so that the heat taken away by the heat dissipation fan can be conveniently dissipated to the outside of the heat dissipation pipeline.
Please refer to fig. 6, further comprising: can connect in the pipeline is established to the dish on the pipeline 15, the dish is established the both ends of pipeline 15 and is all exposed heat dissipation pipeline 13 lateral wall opening and its both ends can link to each other with outside cooling device.
In this embodiment, a design capable of accelerating cooling is provided, that is: the pipeline is coiled on the pipeline.
Both ends of the coiled pipeline are exposed at the side wall opening of the heat dissipation pipeline 13, and both ends of the coiled pipeline can be connected with an external cooling device. And the purpose of rapid cooling can be realized by matching with the function of the heat dissipation fan.
Of course, the coil pipes can be designed and connected according to actual requirements, such as: sometimes, when the external cooling device is not portable, the design of coiling the pipeline is not adopted.
Or, when the external temperature is already in a lower season, the design of the coil pipeline is not adopted.
Referring to fig. 7, a supporting device 16 for mounting a thermometer to be calibrated is further disposed on the other side of the opening of the device body 1.
In this embodiment, in order to facilitate the installation of the thermometer to be verified, a structure of the support device is provided.
Specifically, referring to fig. 6, the supporting device 16 includes: an inverted U-shaped bracket 17 bridged on the opening of the device body 1 and an accommodating table 18 arranged at the top of the bracket 17; a stopper plate 19 is provided around the table 18.
Referring to fig. 6, an opening for accommodating a wire is formed on the position-limiting plate 19 at a side relatively close to the operation panel 2.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (6)
1. The utility model provides a portable transformer thermometer calibration equipment which characterized in that: the method comprises the following steps: the device comprises a device body (1) with an opening at the top and a hollow interior and an operation panel (2) covering one side of the opening of the device body (1);
the device body (1) is also internally provided with an oil storage device (3), an oil pump (4) connected with one side of the oil storage device (3) through a pipeline and a cooling device (5) matched and connected with the pipeline; the side wall of the oil storage device (3) is provided with two outlets which are respectively connected with the oil pump through pipelines; the top of the oil storage device (3) is provided with a heating rod (6) with the bottom immersed into the oil storage device (3) and two insertion holes (7) for respectively placing a temperature probe and a thermometer to be checked;
the operation panel (2) is provided with a temperature control device (8) and a calibration measuring device (9) which are electrically connected with the heating rod (6), and a temperature probe of the temperature control device (8) enters one of the insertion holes (7); the verification measurement device (9) comprises: an indicator light (10), an ammeter (11) or a voltmeter (12).
2. A portable transformer thermometer calibration device as recited in claim 1, further comprising: the cooling device (5) comprises: a heat dissipation pipeline (13) coated on the pipeline, and a heat dissipation fan (14) is arranged in the heat dissipation pipeline (13); and a vent hole is formed in the side wall of the heat dissipation pipeline (13).
3. A portable transformer thermometer calibration device as set forth in claim 2, wherein: further comprising: can connect in around set on the pipeline establishes pipeline (15), the dish is established the both ends of pipeline (15) and all is exposed heat dissipation pipeline (13) lateral wall opening and its both ends and can link to each other with outside cooling device.
4. A portable transformer thermometer calibration device as claimed in any one of claims 1 to 3, wherein: the other side of the opening of the device body (1) is also provided with a supporting device (16) for erecting a thermometer to be checked.
5. The portable transformer thermometer calibration device of claim 4, further comprising: the support device (16) comprises: an inverted U-shaped bracket (17) bridged on the opening of the device body (1) and a containing table (18) arranged at the top of the bracket (17); limiting plates (19) are arranged around the containing table (18).
6. The portable transformer thermometer calibration device of claim 5, further comprising: and one side of the limiting plate (19) relatively close to the operation panel (2) is provided with an opening for accommodating a lead to penetrate through.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920854587.0U CN209910853U (en) | 2019-06-08 | 2019-06-08 | Portable transformer thermometer calibration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920854587.0U CN209910853U (en) | 2019-06-08 | 2019-06-08 | Portable transformer thermometer calibration device |
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| CN209910853U true CN209910853U (en) | 2020-01-07 |
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| CN201920854587.0U Active CN209910853U (en) | 2019-06-08 | 2019-06-08 | Portable transformer thermometer calibration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579129A (en) * | 2020-06-17 | 2020-08-25 | 国网安徽省电力有限公司滁州供电公司 | Debugging device and debugging method for main transformer thermometer |
| RU215382U1 (en) * | 2021-12-16 | 2022-12-12 | Общество с ограниченной ответственностью "Газпром трансгаз Ухта" | PORTABLE DEVICE FOR CHECKING AND ADJUSTING THE TEMPERATURE CONTROLLER TYPE RT AND RTI-012 |
-
2019
- 2019-06-08 CN CN201920854587.0U patent/CN209910853U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579129A (en) * | 2020-06-17 | 2020-08-25 | 国网安徽省电力有限公司滁州供电公司 | Debugging device and debugging method for main transformer thermometer |
| RU215382U1 (en) * | 2021-12-16 | 2022-12-12 | Общество с ограниченной ответственностью "Газпром трансгаз Ухта" | PORTABLE DEVICE FOR CHECKING AND ADJUSTING THE TEMPERATURE CONTROLLER TYPE RT AND RTI-012 |
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