CN203132726U - Temperature detection device for stator winding of submersible motor - Google Patents
Temperature detection device for stator winding of submersible motor Download PDFInfo
- Publication number
- CN203132726U CN203132726U CN 201320147232 CN201320147232U CN203132726U CN 203132726 U CN203132726 U CN 203132726U CN 201320147232 CN201320147232 CN 201320147232 CN 201320147232 U CN201320147232 U CN 201320147232U CN 203132726 U CN203132726 U CN 203132726U
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- Prior art keywords
- conducting element
- described heat
- stator winding
- heat conduction
- heat conducting
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Abstract
The utility model discloses a temperature detection device for stator windings of a submersible motor. The temperature detection device comprises a thermocouple, and heat conductive elements and a heat conductive joint which are insulated with the stator windings, wherein the heat conductive members are embedded in stator core grooves of the submersible motor and are in heat conductive contact with the stator windings, a certain length of each of the heat conductive members extends out of the stator core grooves and the stator core grooves are fixedly connected with one end of the heat conductive joint, and the other end of the heat conductive joint and a measuring head of the thermocouple are fixedly connected with one another and also can be detached from one another. The temperature detection device has simple installation process, can be disassembled, and is simple and convenient to repair and replace. Further, the temperature detection device is suitable for temperature measurement of windings in the submersible motor stator grooves, can be used for the winding of one phase independently, and can be used for three phase windings simultaneously.
Description
Technical field
The utility model relates to a kind of technical field of motors, particularly a kind of submersible electric machine with oil stator winding temperature pick-up unit.
Background technology
Submersible electric motor is the heart of whole submersible electric pump system, and its drives oil-submersible centrifugal pump and extracts underground crude oil.Submersible electric machine with oil is three-phase squirrel-cage asynchronous motor, works in the particular surroundings of thousands of meters down-holes, has characteristics such as high temperature, high pressure and corrosivity.In complex operating environment, in order to ensure the operate as normal of motor, the Temperature Distribution of grasping motor is most important.At present, measure stator winding temperature used all be embedded temperature detector, embedded temperature detector can be resistance-type, also can be thermojunction type, commonplace employing be resistance-type.Motor flush type thermal resistance (abbreviation thermal resistance) is applicable to that motor winding and electric machine iron core thermometric are supporting as temperature sensor and Displaying Meter with platinum resistance thermometer sensor,, the temperature of winding or stator core in the measurement motor, the temperature element of resistance-type thermometry meter generally is embedded in stator winding end, its termination is connected to the measurement mechanism of thermometry meter with two leads, utilize temperature element burying the variation that a little is subjected to Temperature Influence and causes resistance underground, measure that to bury underground a little be the temperature of stator winding.Since embedded temperature detector imbedded position, temperature element itself length, imbed the influence of factors such as technology, the temperature of often measuring and actual temperature difference are very big, the thermal resistance temp measuring system generally by thermal resistance, connect lead and Displaying Meter etc. and form, utilize testee when temperature variation self-resistance also along with the characteristic that changes is measured temperature.The heated portion of thermal resistance (temperature-sensing element) is that double wrap is on the skeleton that insulating material is made equably with metal, and when having thermograde to exist in the measured medium, then measured temperature is the medial temperature in the temperature-sensing element in-scope inner medium layer.(remove, saying is wrong) because the operating procedure restriction, temperature-measuring resistance element is imbedded the position can only be near winding overhang, measuring temperature is the temperature of winding overhang or is exactly the temperature of dynamo oil, can not satisfy accurate winding temperature Testing requirement, more can not detect the maximum temperature of winding, and because embedded temperature detector is imbedded the position, the length of temperature element itself, imbed the influence of factors such as technology, the temperature of often measuring and actual temperature difference are very big, the submersible electric machine with oil stator winding that present most of producer makes is to adopt the dipping lacquer pouring technology, embedded temperature detector can't realize accurately measuring stator winding temperature, and mounting process complexity, hot water radiation wire carefully easily fractures, the inconvenience maintenance.
The utility model content
The utility model is for solving the submersible electric machine with oil stator winding temperature pick-up unit that the technical matters that exists in the known technology provides a kind of easy installation and maintenance and can accurately detect winding temperature in the motor stator slot.
The technical scheme that the utility model is taked for the technical matters that exists in the solution known technology is: a kind of submersible electric machine with oil stator winding temperature pick-up unit, comprise thermopair, also comprise and stator winding between heat conducting element and the heat conduction joint of mutually insulated, described heat conducting element embeds in the stator core slot and with stator winding heat conduction and contacts, described heat conducting element some to stretch out stator core slot outer and affixed with an end of described heat conduction joint, the other end of described heat conduction joint and the gauge head of described thermopair is affixed and can split mutually.
Submersible electric machine with oil stator winding temperature pick-up unit provided by the utility model can also adopt following technical scheme:
The gauge head screw thread of described heat conduction joint and described thermopair is affixed.
Described heat conducting element is the copper heat conducting element of tape insulation layer, and described heat conduction joint is copper heat conduction joint.
Described heat conducting element is cylindricality, and its shape of cross section is identical with the lead of stator winding.
The affixed end of described heat conduction joint and described heat conducting element is provided with blind hole, and described heat conducting element inserts in the described blind hole and with described heat conduction joint and is welded to connect.
Described heat conducting element embeds axial depth to the stator core slot middle part.
Advantage and the good effect that the utlity model has are: adopt the good heat conducting element of heat conductivility, and heat conducting element can be embedded in stator core slot middle part and other positions, can pass through heat conducting element conduction measurement motor winding temperature inside, it is more accurate to measure; Heat conducting element is linked to each other with the thermopair reassembling type by the heat conduction joint after the cast of winding dipping lacquer again, and sensor needn't be with the cast of winding dipping lacquer, and the mounting process of sensor is simple, and dismantled and assembled, and maintain and replace is easy.Owing to adopted the utility model brand-new technology scheme, compared with prior art, can detect the working temperature of motor winding operation truly by thermopair, to realizing the submersible electric machine with oil design optimization, realizing electric pump system reliability service, all significant to improving operation life of electric pump system to passing through to adjust load.The utlity model has simple in structure, easily manufactured, dependable performance, advantage such as result of use is good, can satisfy the requirement of testing the submersible electric machine with oil winding temperature and improving measuring accuracy, a serviceable life can effectively improving the submersible electric pump system after taking appropriate measures by this measurement data.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that heat conducting element of the present utility model and stator winding embed the structural representation in the stator core slot;
Fig. 3 is the structural representation that heat conduction joint of the present utility model is connected with thermopair and heat conducting element respectively.
Among the figure: 1, stator winding; 2, heat conducting element; 3, heat conduction joint; 4, thermopair; 5, glass tape; 6, stator core; 7, stator core slot; 8, the gauge head of thermopair; 9, blind hole; 10, the pad that is welded to connect of heat conducting element and heat conduction joint.
Embodiment
For further understanding utility model content of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1～Fig. 3, a kind of submersible electric machine with oil stator winding temperature pick-up unit, comprise thermopair 4, also comprise and stator winding 1 between heat conducting element 2 and the heat conduction joint 3 of mutually insulated, described heat conducting element 2 embeds in the stator core slot 7 and with stator winding 1 heat conduction and contacts, described heat conducting element 2 some to stretch out stator core slot 7 outer and affixed with an end of described heat conduction joint 3, the other end of described heat conduction joint 3 and the gauge head of described thermopair 8 are affixed and can split mutually.Wherein, described heat conducting element 2 and described heat conduction joint 3 all select for use the good material of thermal conductivity to make, can select for use materials such as copper to make copper heat conducting element and copper heat conduction joint, described heat conducting element 2 can be the copper heat conducting element of tape insulation layer, the heat conducting element of copper can apply the above high-temperature insulating layer of anti-150 degree, as applying insullac etc.; The shape of described heat conducting element 2 can be various ways such as cylindricality or sheet; Described heat conduction joint 3 one ends can be provided with blind hole 9, and the diameter of described blind hole 9 and described heat conducting element 2 are complementary and enable to insert, and described heat conducting element 2 inserts in the described blind hole 9 and can be welded to connect with described heat conduction joint 3; The gauge head 8 of described thermopair can detachably be fixed on the described heat conduction joint 3, and contact with described heat conduction joint 3 heat conduction, the affixed mode that can split mutually is optional to be threaded and clamping etc., as described the other end of heat conduction joint 3 be provided with thermopair gauge head screw thread be complementary threaded hole, affixed with thermopair gauge head 8 screw threads; Or arrange on the other end of described heat conduction joint 3 buckle and with 8 clampings of thermopair gauge head, can also select other detachable connected modes for use.
Further, described heat conducting element 2 optional cylindricalitys, its shape of cross section is identical with the lead of stator winding 1, makes for convenient, can adopt with the lead of stator winding 1 same size and make.
General stator core middle part temperature is the highest, for recording the maximum temperature of stator winding, described heat conducting element can be embedded axial depth to the stator core middle part.
By specific embodiment principle of work of the present utility model is described: see also Fig. 3, the device of being made up of heat conducting element 2, copper heat conduction joint 3, thermopair 4 three parts is realized the measurement of winding temperature in the stator slot.Heat conducting element 2 adopts identical specification with the lead of stator winding 1.The blind hole 9 of copper heat conduction joint 3 one ends for matching with heat conducting element 2 sizes, the threaded hole of the other end for matching with thermopair gauge head 8.One end of copper heat conduction joint 3 and heat conducting element 2 high-temperature soldering are also done insulation and are handled, the pad 10 that is welded to connect referring to heat conducting element and heat conduction joint.The heat conducting element 2 that is welded with the above insulation course of having of heat conduction joint 3 of high temperature resistant 150 degree is embedded in the specific submersible electric machine with oil stator core slot 7, insert depth can be adjusted to the axial middle part of stator core slot 7 on demand, exposes stator core slot 7 outer parts and slightly is longer than stator winding 1 end.Heat conducting element 2 exposes stator core slot 7 outer parts to be fixed with glass tape 5 colligations jointly with the straight line portion of stator winding 1.By temperature conductivity good heat conducting element 2 and the good heat conduction joint 3 of the same temperature conductivity of all-in-one-piece affixed with it, the heat conduction joint 3 of temperature conduction to stator core slot 7 with winding in the stator slot, the gauge head 8 of thermopair 4 is linked to each other with heat conduction joint 3, by detecting the temperature of heat conduction joint 3, record the actual temperature of winding in the stator slot.
Exposing stator core slot 7 outer copper heat conduction joint 3 and screwed thermopair 4 can disassembled and assembled freely, and installation and maintenance are easy, and the lead of assembling back thermopair 4 is transferred to control system with the temperature sensor signal.This method can be used separately at certain phase winding, also can use simultaneously at three phase windings.
Claims (6)
1. submersible electric machine with oil stator winding temperature pick-up unit, comprise thermopair, it is characterized in that, also comprise and stator winding between heat conducting element and the heat conduction joint of mutually insulated, described heat conducting element embeds in the stator core slot and with stator winding heat conduction and contacts, described heat conducting element some to stretch out stator core slot outer and affixed with an end of described heat conduction joint, the other end of described heat conduction joint and the gauge head of described thermopair is affixed and can split mutually.
2. submersible electric machine with oil stator winding temperature pick-up unit according to claim 1 is characterized in that, the gauge head screw thread of described heat conduction joint and described thermopair is affixed.
3. submersible electric machine with oil stator winding temperature pick-up unit according to claim 1 is characterized in that, described heat conducting element is the copper heat conducting element of tape insulation layer, and described heat conduction joint is copper heat conduction joint.
4. submersible electric machine with oil stator winding temperature pick-up unit according to claim 1 is characterized in that, described heat conducting element is cylindricality, and its shape of cross section is identical with the lead of stator winding.
5. submersible electric machine with oil stator winding temperature pick-up unit according to claim 1 is characterized in that, the affixed end of described heat conduction joint and described heat conducting element is provided with blind hole, and described heat conducting element inserts in the described blind hole and with described heat conduction joint and is welded to connect.
6. submersible electric machine with oil stator winding temperature pick-up unit according to claim 1 is characterized in that, described heat conducting element embeds axial depth to the stator core slot middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320147232 CN203132726U (en) | 2013-03-28 | 2013-03-28 | Temperature detection device for stator winding of submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320147232 CN203132726U (en) | 2013-03-28 | 2013-03-28 | Temperature detection device for stator winding of submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203132726U true CN203132726U (en) | 2013-08-14 |
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ID=48940698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320147232 Withdrawn - After Issue CN203132726U (en) | 2013-03-28 | 2013-03-28 | Temperature detection device for stator winding of submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203132726U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162853A (en) * | 2013-03-28 | 2013-06-19 | 天津市百利溢通电泵有限公司 | Device and method for detecting temperature of submersible motor stator winding |
| WO2020216594A1 (en) * | 2019-04-26 | 2020-10-29 | Robert Bosch Gmbh | Stator of an electrical machine having a replaceable temperature sensor |
-
2013
- 2013-03-28 CN CN 201320147232 patent/CN203132726U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162853A (en) * | 2013-03-28 | 2013-06-19 | 天津市百利溢通电泵有限公司 | Device and method for detecting temperature of submersible motor stator winding |
| CN103162853B (en) * | 2013-03-28 | 2015-09-02 | 天津市百利溢通电泵有限公司 | A kind of Submersible Motor Stator winding temperature pick-up unit and detection method |
| WO2020216594A1 (en) * | 2019-04-26 | 2020-10-29 | Robert Bosch Gmbh | Stator of an electrical machine having a replaceable temperature sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130814 Effective date of abandoning: 20150902 |
|
| RGAV | Abandon patent right to avoid regrant |