CN211630028U - Temperature measuring element of hydraulic generator stator - Google Patents
Temperature measuring element of hydraulic generator stator Download PDFInfo
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- CN211630028U CN211630028U CN201922353254.2U CN201922353254U CN211630028U CN 211630028 U CN211630028 U CN 211630028U CN 201922353254 U CN201922353254 U CN 201922353254U CN 211630028 U CN211630028 U CN 211630028U
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- temperature measuring
- stator
- wire
- shielded wire
- temperature
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Abstract
The utility model discloses a temperature element of hydraulic generator stator, platinum resistance, shielded wire, aviation plug, semiconductor filler strip, shielded wire one end and platinum resistance connection, the shielded wire other end and aviation plug connection, the shielded wire is the platykurtic, the shielded wire has platinum resistance's one end and pegs graft with the semiconductor filler strip. The utility model discloses temperature measuring resistor damages in generating set operation process, can be when shutting down, and generating set need not to tear open the machine, change temperature measuring resistor under the condition of dismantling stator coil, both practiced thrift installation cost and time limit for a project, can carry out real-time accuracy, control effectively to the stator temperature in service again, and this has great practical meaning to the safety and stability operation of generating set and whole electric wire netting.
Description
Technical Field
The utility model relates to a hydraulic generator field especially relates to a temperature element of hydraulic generator stator.
Background
The operating temperature of the generator set is the most important non-electrical quantity monitoring parameter of the power plant, and is directly related to the fully stable operation of the generator set and the service life of the generator set. The working environment of the temperature measuring resistor of the stator of the generator is very special, which is different from other industrial fields. These particularities are represented by:
1. the running time of the generator set is long, and as the technical level of equipment manufacturing is improved and the power demand is continuously increased, the maintenance (overhaul) period interval of the generator set is longer and longer, which puts higher requirements on the stable and reliable long-term running of the temperature measuring resistor.
2. When being installed, the temperature measuring resistor of the stator coil of the generator is embedded in narrow or closed space between layers of the stator coil and the bottom of the tank in advance, only the lead wire is connected with the temperature controller, and the temperature measuring resistor cannot be maintained or replaced basically in the operation process. The temperature measuring resistor can be replaced only when the stator is disassembled and overhauled.
3. The strong magnetic field generated by the strong magnetic field of the stator and the magnetic leakage of the rotor greatly interferes with the temperature measuring resistor and the temperature measuring system, and the interference resistance of the thermal resistor and the lead wire thereof is greatly required.
4. The monitoring of the operating temperature of each part of the generator set is the most important non-electrical quantity parameter for operation and maintenance personnel or automation equipment to judge the safe operating condition of the generator set. If the temperature of the running stator cannot be accurately and effectively monitored in real time. The normal, stable and reliable operation of the unit is seriously threatened, even insulation aging is possibly caused by overhigh temperature, the insulation of a stator winding is broken down, and serious accidents such as turn-to-turn short circuit, interphase short circuit and the like occur.
The structure of the temperature measuring pad strip used at present is that the temperature measuring resistor is packaged in the semiconductor pad strip by epoxy resin to be integrated, sometimes, because of the design requirement, the thickness of the temperature measuring pad strip is only 2.5mm, the upper cover plate and the lower cover plate are removed, the actual available installation thickness is 2mm, but the diameter of the three-core shielding wire is larger than the thickness of the temperature measuring pad strip. When the temperature measuring pad strip is manufactured in a factory, in order to ensure the thickness of the temperature measuring pad strip, the three-core shielding wire can be damaged in the pressing process, and the temperature measuring resistor can be damaged due to extrusion when the slot wedge is tightened after the coil is installed.
After the generator set is put into commercial operation for many years, the stator winding and the iron core temperature measuring resistor are damaged successively due to various reasons, and the temperature of the running stator cannot be accurately and effectively monitored in real time. Because the temperature measuring resistor of the stator coil of the generator is embedded in narrow or closed space between the layers of the stator coil and the bottom of the tank in advance during installation, only the lead wire is connected with the temperature controller, the temperature measuring resistor cannot be maintained or replaced in the operation process, and the thermal resistor can be replaced only when the stator is disassembled and overhauled.
Disclosure of Invention
The utility model aims at providing a need not to tear open the machine, change temperature resistance's hydraulic generator stator's temperature element under the condition of dismantling stator coil to the defect of prior art.
In order to realize the above purpose, the utility model adopts the following technical scheme:
the utility model provides a temperature element of hydraulic generator stator, platinum resistance, shielded wire, aviation plug, semiconductor filler strip, shielded wire one end is connected with platinum resistance, and the shielded wire other end is connected with aviation plug, the shielded wire is the platykurtic, the shielded wire has platinum resistance's one end and pegs graft with the semiconductor filler strip.
Further, the platinum thermal resistor is packaged in the protective shell.
Furthermore, the temperature measuring element also comprises a heat shrinkable sleeve, and the heat shrinkable sleeve is sleeved outside the shielding wire. The heat-shrinkable sleeve is used for protecting the shielding wire.
Furthermore, a U-shaped insertion opening is formed in one side of the semiconductor gasket strip, and one end, provided with the platinum thermal resistor, of the shielding wire is inserted into the bottom of the U-shaped insertion opening.
Further, the shielding wire is a flexible shielding wire.
Adopt the technical scheme of the utility model, the beneficial effects of the utility model are that: compared with the prior art, the utility model discloses temperature measurement resistance damages in generating set operation process, can be when shutting down, and generating set need not to tear open the machine, change temperature measurement resistance under the condition of dismantling stator coil, has both practiced thrift installation cost and time limit for a project, can carry out real-time accuracy, monitor effectively to the stator temperature in service again, and this has great practical meaning to the safety and stability operation of generating set and whole electric wire netting.
Drawings
Fig. 1 is a structural diagram of a temperature measuring element of a stator of a hydraulic generator provided by the utility model.
The device comprises a power supply, a power supply.
Detailed Description
The specific embodiments of the present invention will be further explained with reference to the accompanying drawings.
The utility model discloses the structure is suitable for all hydraulic generator, steam turbine, motor etc, and the temperature of coil and iron core is measured to the temperature measurement of stator coil inter-slot and tank bottom.
As shown in the figure, a temperature element of hydraulic generator stator, platinum resistance 1, shielded wire 3, aviation plug 5, semiconductor filler strip 6, 3 one end of shielded wire are connected with platinum resistance 1, and the 3 other end of shielded wire is connected with aviation plug 5, the shielded wire is the platykurtic, shielded wire 3 has platinum resistance 1's one end and pegs graft with semiconductor filler strip 6.
The platinum thermal resistor 1 is packaged in the protective shell 2, so that the whole structure is an insulation structure, and the insulation performance of the platinum thermal resistor 1, a stator coil (wire rod) and a stator iron core body in the platinum thermal resistor can be effectively ensured.
The temperature measuring element further comprises a heat shrinkable sleeve 4, and the heat shrinkable sleeve 4 is sleeved outside the shielding wire 3. The heat-shrinkable sleeve 4 serves to protect the shielded wire 3.
One side of the semiconductor gasket strip 6 is provided with a U-shaped insertion opening, and one end of the shielding wire 3 with the platinum thermal resistor 1 is inserted into the bottom of the U-shaped insertion opening.
The shielded wire 3 is a flexible shielded wire. Preferably, the thickness of the shielding wire 3 and the thickness of the platinum thermistor 1 are both 1.4 mm. The structure of the temperature measuring pad strip in use at present is that the temperature measuring resistor is packaged in the semiconductor pad strip 6 by epoxy resin to be integrated, sometimes, because of the design requirement, the thickness of the temperature measuring pad strip is only 2.5mm, the upper cover plate and the lower cover plate are removed, the actual available installation thickness is 2mm, but the diameter of the three-core shielding wire 3 is larger than the thickness of the temperature measuring pad strip. When the temperature measuring pad strip is manufactured in a factory, in order to ensure the thickness of the temperature measuring pad strip, the three-core shielding wire 3 can be damaged in the pressing process, and the purchased temperature measuring resistor can be damaged due to extrusion when the slot wedge is tightened after the coil is installed.
And the utility model discloses shielded wire 3 makes into the flat and wire structure that has certain toughness, has certain toughness to make smooth the inserting of wire and extract semiconductor filler strip 6, and the afterbody adopts aviation plug 5 to connect, reaches and need not to tear open, dismantles stator coil, also need not to change under the condition of change or welding outside wire temperature measuring resistor. The structure is simple and practical, and the installation cost and the construction period are saved.
The utility model discloses structure and the mounting means of structural change generator stator temperature measuring resistor, temperature measuring resistor damages in generating set operation process, can be when shutting down, generating set need not to tear open the machine, change temperature measuring resistor under the condition of dismantling stator coil, perhaps be the stator of assembly in the factory, discover temperature measuring resistor damage after the equipment is accomplished, also can change temperature measuring resistor under the condition of not dismantling stator coil, both shortened installation period, practice thrift installation cost again. The temperature of the stator in operation is accurately and effectively monitored in real time, and the method has great practical significance for safe and stable operation of the generator set and the whole power grid.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (5)
1. The temperature measuring element of the stator of the hydraulic generator is characterized by comprising a platinum thermal resistor, a shielding wire, an aviation plug and a semiconductor pad strip, wherein one end of the shielding wire is connected with the platinum thermal resistor, the other end of the shielding wire is connected with the aviation plug, the shielding wire is flat, and one end of the shielding wire with the platinum thermal resistor is connected with the semiconductor pad strip in an inserting mode.
2. The temperature measuring element of a stator of a hydro-generator according to claim 1, wherein the platinum thermistor is encapsulated in a protective housing.
3. The temperature measuring element for a stator of a hydro-generator according to claim 1, further comprising a heat shrinkable sleeve sleeved outside the shield wire.
4. The temperature measuring device of a stator of a hydro-generator according to claim 1, wherein a U-shaped insertion opening is formed at one side of the semiconductor backing strip, and one end of the shield wire having the platinum thermistor is inserted into a bottom of the U-shaped insertion opening.
5. The temperature measuring element for a stator of a hydro-generator according to claim 1, wherein the shield wire is a flexible shield wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922353254.2U CN211630028U (en) | 2019-12-25 | 2019-12-25 | Temperature measuring element of hydraulic generator stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922353254.2U CN211630028U (en) | 2019-12-25 | 2019-12-25 | Temperature measuring element of hydraulic generator stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211630028U true CN211630028U (en) | 2020-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922353254.2U Active CN211630028U (en) | 2019-12-25 | 2019-12-25 | Temperature measuring element of hydraulic generator stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211630028U (en) |
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2019
- 2019-12-25 CN CN201922353254.2U patent/CN211630028U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310012 No. 102, Xihu District, Hangzhou, Zhejiang, Xueyuan Road Patentee after: Hangzhou Jianghe Hydropower Technology Co.,Ltd. Address before: 310012 No. 102, Xihu District, Hangzhou, Zhejiang, Xueyuan Road Patentee before: HANGZHOU JIANGHE HYDRO-ELECTRIC SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A temperature measuring element for the stator of a hydroelectric generator Effective date of registration: 20230821 Granted publication date: 20201002 Pledgee: Zhejiang Xiaoshan Rural Commercial Bank Co.,Ltd. Pledgor: Hangzhou Jianghe Hydropower Technology Co.,Ltd. Registration number: Y2023980052896 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |