CN211978163U - Transformer temperature measuring device - Google Patents
Transformer temperature measuring device Download PDFInfo
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- CN211978163U CN211978163U CN202020411706.8U CN202020411706U CN211978163U CN 211978163 U CN211978163 U CN 211978163U CN 202020411706 U CN202020411706 U CN 202020411706U CN 211978163 U CN211978163 U CN 211978163U
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Abstract
The utility model discloses a transformer temperature measuring device, which comprises a temperature measuring element, wherein the temperature measuring element is wrapped in a tube body, and two ends of the tube body are respectively provided with a connecting piece and a probe; the temperature measuring element and the tube body are fixed in the transformer through the connecting piece; the transformer oil in the transformer flows into the tube body and is in contact with the temperature measuring element; the probe extends into the winding of the transformer. The transformer temperature measuring device of the utility model is provided with a transformer temperature measuring device in the transformer, and the temperature measuring element of the temperature measuring device is contacted with the transformer oil to directly measure the temperature of the transformer oil; meanwhile, the probe is fixed in a winding of the transformer, and the temperature of the winding of the transformer is directly detected through the probe; through the setting, make the utility model discloses a transformer temperature measuring device can the simultaneous measurement transformer oil level temperature and winding temperature, satisfies transformer temperature monitoring's demand.
Description
Technical Field
The utility model relates to a temperature-detecting device technical field especially relates to a transformer temperature measuring device.
Background
The power transformer is a core device of a substation, the temperature monitoring of the transformer is an important measure for ensuring the normal operation of the transformer, and how to reflect the temperature inside the transformer simply, directly, accurately and in real time is concerned by many users and manufacturers.
The temperature measurement of the transformer mainly measures the temperature of two places, namely the oil surface temperature and the winding temperature. The transformer is stored with transformer oil, which mainly plays the roles of heat dissipation, arc extinction and insulation during operation, and the oil surface temperature is the temperature of the transformer oil. The winding is a group of turns constituting an electrical line corresponding to a certain voltage value noted by the transformer, i.e. the core and the cable of the transformer, are also located inside the transformer. The temperature inside the transformer can be obtained by measuring the oil surface temperature and/or the winding temperature, and the current temperature measuring device has the defects that the shape and the size are not suitable for the transformer, so that the temperature inside the transformer is difficult to measure, the temperature measuring device is not resistant to high temperature (the temperature range from room temperature to 1000 ℃), the temperature measuring device cannot measure the oil surface temperature or the winding temperature inside, and the like, and brings inconvenience for monitoring the temperature of the transformer.
SUMMERY OF THE UTILITY MODEL
The utility model provides a transformer temperature measuring device solves the measuring device that the inside temperature measurement of present power transformer exists and the transformer structure mismatch, can't measure defects such as inside oil level temperature and winding temperature.
In order to solve the technical problem, the utility model discloses a technical scheme be: the transformer temperature measuring device comprises a temperature measuring element, wherein the temperature measuring element is wrapped in a tube body, and two ends of the tube body are respectively provided with a connecting piece and a probe;
the temperature measuring element and the tube body are fixed in the transformer through the connecting piece;
the transformer oil in the transformer flows into the tube body and is in contact with the temperature measuring element;
the probe extends into the winding of the transformer.
Wherein the connecting piece comprises a through device and a through disc;
the through disc is fixed in the transformer;
the through device is detachably connected with the through disc, and the end part of the through device extends out of the transformer.
And an optical fiber connector is arranged in the through device and extends out of the transformer along with the through device.
Wherein the through pad is soldered within the transformer.
The optical fiber connector is made of stainless steel, and the pipe body is made of polytetrafluoroethylene.
Gaps are formed in the outer surface of the tube body at intervals, and the transformer oil flows into the tube body through the gaps and is in contact with the temperature measuring element in the tube body.
The temperature measuring element is a high-temperature fiber grating sensor, and the outside of the temperature measuring element is coated with a polyimide material.
The temperature measuring element comprises a connecting part and a temperature sensing part, the connecting part is arranged in the tube body, and the temperature sensing part is arranged in the probe.
One end of the connecting part extends out of the transformer through the optical fiber joint.
The probe is a ceramic tube and is sleeved outside the temperature sensing part.
Compared with the prior art, the utility model discloses a beneficial effect that transformer temperature measuring device reached does: a transformer temperature measuring device is arranged in the transformer, and a temperature measuring element of the temperature measuring device is in contact with the transformer oil to directly measure the temperature of the transformer oil; meanwhile, the probe is fixed in a winding of the transformer, and the temperature of the winding of the transformer is directly detected through the probe; through the setting, make the utility model discloses a transformer temperature measuring device can the simultaneous measurement transformer oil level temperature and winding temperature, satisfies transformer temperature monitoring's demand.
Drawings
To illustrate the technical solutions in the embodiments of the present invention more clearly, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of the transformer temperature measuring device of the present invention;
fig. 2 is a schematic view of one of the sections of the tubular body of fig. 1 after stretching.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 is a schematic diagram of a transformer temperature measuring device of the present invention, the transformer temperature measuring device includes a temperature measuring element 1, the temperature measuring element 1 is wrapped in a tube 2, and two ends of the tube 2 are respectively provided with a connecting member 3 and a probe 4; the temperature measuring element 1 and the tube body 2 are fixed in the transformer through a connecting piece 3; the transformer oil in the transformer flows into the tube body 2 and contacts with the temperature measuring element 1; the probe 4 extends into the winding of the transformer.
The transformer oil is mineral oil, is a mixture of pure, stable, low-viscosity, good-insulation and good-cooling liquid natural hydrocarbons obtained by acid-base refining treatment of lubricating oil fractions in petroleum, and is mainly used in a transformer to play the roles of insulation, heat dissipation and arc extinction, a winding comprises an iron core, a coil, a rotor and the like of the transformer, and the internal temperature of the transformer can be referred to through the temperature of the transformer oil and/or the winding. The temperature measuring element 1 is used for detecting the temperature inside the transformer, and the detection range at least comprises the oil surface temperature and the winding temperature of the transformer. The connecting piece 3 is used for fixing the temperature measuring element 1 and the tube body 2 in the transformer, so that the temperature measuring element 1 and the tube body 2 are conveniently positioned, and the adverse effect that the tube body 2 is wound into a mass to influence normal use due to the fact that the temperature measuring element 1 and the tube body 2 move in transformer oil in the using process is avoided. The outer part of the temperature measuring element 1 is provided with a tube body 2 which forms a protective layer for the temperature measuring element 1, and meanwhile, the tube body 2 is also used for enabling the transformer oil to flow in, so that the tube body is in contact with the temperature measuring element 1 in the tube body 2, and the temperature measuring element 1 can measure the temperature of the transformer oil. The winding temperature of transformer detects through probe 4, and the transformer temperature measuring device in this application with probe 4 direct mount in the transformer winding, set up between the iron core and the coil of transformer promptly, detect the winding temperature through probe 4. Through the setting, the transformer temperature measuring device can measure the oil surface temperature and the winding temperature of the transformer simultaneously, and the requirement of transformer temperature monitoring is met.
The connecting member 3 in the present embodiment includes a through-receiver 31 and a through-disc 32; the through disc 32 is fixed in the transformer; the penetration device 31 is detachably connected to the penetration plate 32, and an end of the penetration device 31 extends to the outside of the transformer. The penetration plate 32 is provided with a plurality of connection holes, the penetration device 31 extends out of the connection holes, the other side of the penetration device is fixed with the penetration plate 32, and the end part of the penetration device 31 extends out of the penetration plate 32 and then extends out of the transformer. After the penetration device 31 is connected with the penetration plate 32, the transformer oil cannot leak into the penetration plate 32, and the consequence that the transformer oil leaks into the penetration plate 32 to cause light failure is avoided.
The end portion of the feedthrough 31 in this embodiment is provided with an optical fiber connector 33, and the optical fiber connector 33 protrudes with the feedthrough 31 to the outside of the transformer. The optical fiber connector 33 is provided with an optical fiber therein for connection with the outside, thereby transmitting the measurement result of the temperature measuring device to the outside.
The fixed mode that link up dish 32 and transformer in this application has the multiple, can adopt welding, bonding, set up modes such as connecting piece connection, and is preferred, links up dish 32 in this embodiment and welds in the transformer, and welded connected mode is simpler, and connects firmly, avoids appearing receiving high temperature in the transformer influence in the use, leads to linking up dish 32 and transformer inner wall fixed insecure, influences the problem of normal use.
In this embodiment, the optical fiber connector 33 is made of stainless steel, and the tube body 2 is made of teflon. The optical fiber connector 33 extends out of the transformer and is connected with an external device, and stainless steel is selected as the material of the optical fiber connector 33 to avoid rusting. The tube body 2 is made of polytetrafluoroethylene, and the material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance and is almost insoluble in all solvents. Meanwhile, the polytetrafluoroethylene also has the characteristic of high temperature resistance. Because body 2 bears temperature element 1 and uses in the transformer, and operational environment is high temperature environment, and soaks in transformer oil, leads to the unable normal use of temperature measuring device for avoiding body 2 to damage, consequently chooses for use the polytetrafluoroethylene material to make, satisfies foretell service environment requirement.
The outer surface interval of body 2 in this application is equipped with gap 21, and transformer oil flows into in body 2 through gap 21, contacts with temperature element 1 in the body 2. The temperature measuring element 1 can measure the temperature of the oil surface of the transformer in various ways, for example, a guide pipe is arranged outside the pipe body 2 to guide the transformer oil into the pipe body 2 to be contacted with the temperature measuring element 1. The tube 2 of the present embodiment is an unsealed tube, please refer to fig. 2, fig. 2 is a schematic diagram of the tube 2 after one section is stretched, slits 21 are arranged at intervals on the outer surface, and a plurality of slits 21 are uniformly arranged on the tube 2, so that the tube 2 can be communicated with the outside through the slits 21. When the tube body 2 is immersed in the transformer oil, the transformer oil flows into the tube body 2 through the gap 21, the tube body 2 is full of the transformer oil, air in the tube body 2 is extruded out and is in contact with the temperature measuring element 1 arranged in the tube body 2, and the temperature measuring element 1 measures the temperature of the transformer oil, so that the oil surface temperature of the transformer is obtained. Of course, the gap 21 may be replaced by a through hole or a gap with other shapes, and the transformer oil may flow into the pipe body 2 through the through hole, which also belongs to the utility model concept of the present application.
The temperature measuring element 1 in this embodiment is a high-temperature fiber grating sensor, and the outside of the temperature measuring element 1 is further coated with a polyimide material. The high-temperature fiber grating is a wavelength reflection type optical device which is manufactured on an optical fiber by utilizing a phase mask through ultraviolet light, is a basic fiber sensing element, is widely applied to the field of communication sensing, has the advantages of central wavelength, stable performance, high reflectivity and small 3dB bandwidth, can resist high temperature and can be used in a high-temperature environment. Polyimide is one of organic polymer materials with the best comprehensive performance, has high temperature resistance of more than 400 ℃, has high insulating property, can ensure that the temperature measuring element 1 has more excellent high temperature resistance by being coated outside the temperature measuring element 1, can be normally used in a high-temperature environment in a transformer, and can be prevented from being corroded by transformer oil.
The temperature measuring element 1 in this embodiment includes a connecting portion provided in the tube 2 and a temperature sensing portion provided in the probe 4. The connecting part is used for connecting the fiber grating sensor with an external device, and the temperature sensing part is used for measuring the internal temperature of the transformer. The temperature sensing part is arranged in the probe 4 and extends into a winding of the transformer together with the probe 4 to measure the temperature of the winding of the transformer, and meanwhile, transformer oil flows in through the pipe body 2 and contacts with the temperature sensing part, so that the temperature sensing part detects the temperature of the transformer oil and measures the surface temperature of the transformer oil and the temperature of the winding.
One end of the connection portion in this embodiment extends to the outside of the transformer through the optical fiber connector 33. The fiber connector 33 is provided at an end portion of the feedthrough 31, extends from the inside of the transformer, and is connected to the outside, and the fiber grating sensor extends from the fiber connector 33.
The probe 4 in this embodiment is a ceramic tube, and is sleeved outside the temperature sensing unit. The probe 4 is required to bear high temperature in the using process, so that a high-temperature-resistant ceramic tube is adopted as a production material and sleeved outside the temperature sensing part to protect the temperature sensing part, prevent the temperature sensing part from being stressed, distorted and deformed and cannot normally detect the temperature in the transformer. In this embodiment, the probe 4 is further provided with a probe protection shell 5 outside for wrapping the probe 4 before use, so as to protect the probe 4 and prevent the probe 4 from being damaged by extrusion in the transportation process, thereby being incapable of detecting temperature. When the transformer temperature measuring device needs to be used, the probe protective shell 5 is removed.
By using the transformer temperature measuring device of the utility model, the transformer temperature measuring device is arranged in the transformer, and the temperature measuring element of the temperature measuring device is contacted with the transformer oil to directly measure the temperature of the transformer oil; meanwhile, the probe is fixed in a winding of the transformer, and the temperature of the winding of the transformer is directly detected through the probe; through the setting, make the utility model discloses a transformer temperature measuring device can the simultaneous measurement transformer oil level temperature and winding temperature, satisfies transformer temperature monitoring's demand.
The above is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The transformer temperature measuring device is characterized by comprising a temperature measuring element, wherein the temperature measuring element is wrapped in a tube body, and two ends of the tube body are respectively provided with a connecting piece and a probe;
the temperature measuring element and the tube body are fixed in the transformer through the connecting piece;
the transformer oil in the transformer flows into the tube body and is in contact with the temperature measuring element;
the probe extends into the winding of the transformer.
2. The transformer temperature measurement device of claim 1, wherein the connector comprises a penetrator and a penetrator disk;
the through disc is fixed in the transformer;
the through device is detachably connected with the through disc, and the end part of the through device extends out of the transformer.
3. The transformer temperature measuring device of claim 2, wherein an optical fiber connector is disposed in the feedthrough, and the optical fiber connector extends out of the transformer along with the feedthrough.
4. The transformer temperature measurement device of claim 2, wherein the pass-through pad is soldered within the transformer.
5. The transformer temperature measuring device of claim 3, wherein the optical fiber connector is made of stainless steel, and the tube body is made of polytetrafluoroethylene.
6. The apparatus of claim 1, wherein the outer surface of the tube is spaced apart from each other to define a gap, and the transformer oil flows into the tube through the gap and contacts the temperature measuring element.
7. The transformer temperature measurement device of claim 3, wherein the temperature measurement element is a high temperature fiber grating sensor, and the temperature measurement element is further coated with a polyimide material.
8. The transformer temperature measurement device of claim 7, wherein the temperature measurement element comprises a connection portion and a temperature sensing portion, the connection portion is disposed in the tube, and the temperature sensing portion is disposed in the probe.
9. The apparatus according to claim 8, wherein one end of the connecting portion extends out of the transformer through the optical fiber connector.
10. The transformer temperature measuring device of claim 8, wherein the probe is a ceramic tube sleeved outside the temperature sensing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020411706.8U CN211978163U (en) | 2020-03-26 | 2020-03-26 | Transformer temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020411706.8U CN211978163U (en) | 2020-03-26 | 2020-03-26 | Transformer temperature measuring device |
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| Publication Number | Publication Date |
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| CN211978163U true CN211978163U (en) | 2020-11-20 |
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| CN202020411706.8U Active CN211978163U (en) | 2020-03-26 | 2020-03-26 | Transformer temperature measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238683A (en) * | 2020-03-26 | 2020-06-05 | 北京希卓信息技术有限公司 | Transformer temperature measuring device |
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- 2020-03-26 CN CN202020411706.8U patent/CN211978163U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238683A (en) * | 2020-03-26 | 2020-06-05 | 北京希卓信息技术有限公司 | Transformer temperature measuring device |
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