Generator stator temperature measuring device

Abstract

The utility model discloses a generator stator temperature measuring device. A positioning sleeve is installed on a generator stator shell; a positioning through hole is formed in the center of the positioning sleeve, and a limiting hole is formed in the inner wall of the positioning through hole; the temperature measuring seat penetrates through the positioning through hole; the outer wall of the temperature measuring seat is provided with a flexible buckle, and the flexible buckle is matched with the limiting hole. The compression spring is sleeved on the temperature measuring seat, one end of the compression spring is abutted against the positioning sleeve, and the other end of the compression spring is abutted against the temperature measuring seat; the temperature sensor is fixedly connected with the lower end of the temperature measuring seat; the protection tube is arranged in the generator stator housing, and the temperature sensor passes through the protection tube. According to the utility model, the positioning sleeve is fixedly arranged on the shell, the temperature measuring seat and the positioning sleeve can be quickly disassembled and assembled, the installation and the maintenance are convenient, and the temperature sensor and the temperature measuring seat are fixedly arranged, so that the influence on the temperature sensor caused by vibration is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of mechanical equipment, and in particular to a generator stator temperature measuring device. Background Art

[0002] The stator of a hydro-turbine generator is a stationary part of the hydro-turbine generator, which consists of a base, an iron core, a winding, a copper ring, and a foundation screw. Since the main heating parts of the stator of a hydro-turbine generator are located in various parts of the inner iron core of the stator, when the stator voltage is too high, the iron loss increases; or the load current increases, the copper loss of the stator winding increases; or the power factor decreases, the rotor current increases; or the three-phase load current is unbalanced, etc., all these factors may cause the stator temperature to rise. When the temperature rises too fast or reaches the warning value, if no corresponding measures are taken immediately, the insulation performance of the insulation layer wrapped around the stator core will be reduced or insulation breakdown will be caused, which is very likely to cause problems and lead to serious power outages. Therefore, it is very necessary to monitor the stator temperature of the hydro-turbine generator in real time.

[0003] In order to monitor whether the turbine generator is working properly in real time, it is necessary to monitor the temperature of the turbine generator stator. A temperature measurement temperature sensor is buried in the turbine generator stator.

[0004] In the prior art, due to the long-term influence of vibration during the operation of the generator, it is very easy for the temperature measuring resistor to loosen its connection, resulting in temperature measurement failure, which is troublesome to repair and replace. Utility Model Content

[0005] The present application proposes a generator stator temperature measuring device, which aims to solve the problem that the current generator stator temperature measuring device is troublesome to repair and replace.

[0006] The present application proposes a generator stator temperature measuring device, comprising:

[0007] A positioning sleeve, mounted on the stator housing of the generator;

[0008] A positioning through hole is arranged at the center of the positioning sleeve, and a limiting hole is arranged on the inner wall of the positioning through hole;

[0009] A temperature measuring seat is arranged through the positioning through hole; a flexible buckle is arranged on the outer wall of the temperature measuring seat, and the flexible buckle is adapted to the limiting hole;

[0010] A compression spring is sleeved on the temperature measuring seat, one end of the compression spring abuts against the positioning sleeve, and the other end abuts against the temperature measuring seat;

[0011] A temperature sensor is fixedly connected to the lower end of the temperature measuring seat;

[0012] A protective tube is arranged inside the stator housing of the generator, and the temperature sensor passes through the protective tube.

[0013] In some embodiments, a threaded hole is provided at the lower end of the temperature measuring seat, a thread matching the threaded hole is provided at one end of the temperature sensor, a positioning pin hole is provided at a position of the temperature measuring seat corresponding to the threaded hole, the positioning pin hole is provided perpendicular to the axis of the threaded hole, and the positioning pin is provided in the positioning pin hole.

[0014] In some embodiments, the protective tube is made of epoxy resin.

[0015] In some embodiments, a plurality of temperature sensors are disposed on the stator housing of the generator.

[0016] In some embodiments, the positioning sleeve is fixedly connected to the generator stator housing by screws.

[0017] In some embodiments, the outer wall of the temperature measuring seat is provided with a groove adapted by the flexible buckle, and the flexible buckle can be received in the groove.

[0018] In some embodiments, a rotation button is provided on the top of the temperature measuring seat, and the rotation button is pressed and rotated to a certain angle to realize the rapid disassembly and assembly of the generator stator temperature measuring device.

[0019] The technical effects of the generator stator temperature measuring device in this application are as follows:

[0020] The utility model discloses a generator stator temperature measuring device, comprising a positioning sleeve, a positioning through hole, a temperature measuring seat, a compression spring, a temperature sensor and a protective tube; the positioning sleeve is fixedly installed on a shell, the temperature measuring seat and the positioning sleeve can be quickly disassembled and assembled, and installation and maintenance are convenient; the temperature sensor and the temperature measuring seat are fixedly installed, and the influence of vibration on the temperature sensor is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a generator stator temperature measuring device in one embodiment of the present application;

[0022] Figure 2 for Figure 1 A partial structural diagram of a generator stator temperature measuring device in an embodiment;

[0023] Among them, 1. positioning sleeve; 11. screw; 2. positioning through hole; 3. temperature measuring seat; 4. compression spring; 5. temperature sensor; 51. thread; 6. protective tube; 21. limiting hole; 31. flexible buckle; 32. threaded hole; 33. positioning pin hole; 34. groove; 35. rotating button; 7. generator stator housing. DETAILED DESCRIPTION

[0024] In conjunction with the drawings in the embodiments of the present application, the schemes in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments in the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0026] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0027] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0028] This application proposes a generator stator temperature measurement device, referring to Figure 1 and Figure 2The generator stator temperature measuring device comprises: a positioning sleeve 1, mounted on the generator stator housing 7; a positioning through hole 2, arranged at the center of the positioning sleeve 1, and a limiting hole 21 is arranged on the inner wall of the positioning through hole 2; a temperature measuring seat 3, penetrating the positioning through hole 2; a flexible buckle 31 is arranged on the outer wall of the temperature measuring seat 3, and the flexible buckle 31 is adapted to the limiting hole 21; a compression spring 4, sleeved on the temperature measuring seat 3, one end of the compression spring 4 abuts against the positioning sleeve 1, and the other end abuts against the temperature measuring seat 3; a temperature sensor 5, fixedly connected to the lower end of the temperature measuring seat 3; a protective tube 6, arranged inside the generator stator housing 7, and the temperature sensor 5 passes through the protective tube 6. The protective tube 6 is used to protect the temperature sensor 5. The temperature measuring seat 3 can be quickly disassembled and assembled with the positioning sleeve 1 through the structure of the flexible buckle 31 and the limiting hole 21. The temperature measuring seat 3 is pressed down and rotated by a certain angle to misalign the position of the flexible buckle 31 and the limiting hole 21. The temperature measuring seat 3 can be disassembled and assembled with the positioning sleeve 1 by loosening it.

[0029] In some embodiments, a threaded hole 32 is provided at the lower end of the temperature measuring seat 3, a thread 51 adapted to the threaded hole 32 is provided at one end of the temperature sensor 5, a positioning pin hole 33 is provided at the position of the temperature measuring seat 3 corresponding to the threaded hole 32, the positioning pin hole 33 is perpendicular to the axis of the threaded hole 32, and the positioning pin is arranged in the positioning pin hole 33. The positioning pin passes through the positioning pin hole 33, and one end of the positioning pin abuts against the temperature sensor 5 to realize the positioning of the temperature sensor 5 and prevent the temperature sensor 5 from falling loose when the generator stator housing 7 vibrates during operation.

[0030] In some embodiments, the material of the protective tube 6 is epoxy resin, and the material of the protective tube 6 can also be an insulating material.

[0031] In some embodiments, a plurality of the temperature sensors 5 are disposed on the generator stator housing 7 to achieve accurate temperature measurement of multiple positions of the generator stator.

[0032] In some embodiments, the positioning sleeve 1 is fixedly connected to the generator stator housing 7 by screws 11 .

[0033] In some embodiments, the outer wall of the temperature measuring seat 3 is provided with a groove 34 adapted by the flexible buckle 31 , and the flexible buckle 31 can be received in the groove 34 . When the temperature measuring seat 3 is pressed down, the flexible buckle 31 is received in the groove 34 .

[0034] In some embodiments, a rotation button 35 is provided on the top of the temperature measuring seat 3, and the rotation button 35 can be pressed and rotated to a certain angle to realize the rapid disassembly and assembly of the generator stator temperature measuring device.

[0035] The technical effects of the generator stator temperature measuring device in this application are as follows:

[0036] The utility model discloses a generator stator temperature measuring device with a simple structure, comprising a positioning sleeve 1, a positioning through hole 2, a temperature measuring seat 3, a compression spring 4, a temperature sensor 5 and a protective tube 6; the positioning sleeve 1 is fixedly installed on the shell, the temperature measuring seat 3 and the positioning sleeve 1 can be quickly disassembled and assembled, and are convenient for installation and maintenance; the temperature sensor 5 is fixedly installed with the temperature measuring seat 3, which effectively reduces the influence of vibration on the temperature sensor 5.

[0037] The above are only partial or preferred embodiments of the present application. Neither the text nor the drawings can limit the scope of protection of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the overall concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. A generator stator temperature measuring device, characterized in that: include: A positioning sleeve (1) is mounted on a generator stator housing (7); A positioning through hole (2) is arranged at the center of the positioning sleeve (1), and a limiting hole (21) is arranged on the inner wall of the positioning through hole (2); A temperature measuring seat (3) is arranged to penetrate the positioning through hole (2); a flexible buckle (31) is arranged on the outer wall of the temperature measuring seat (3), and the flexible buckle (31) is adapted to the limiting hole (21); A compression spring (4) is sleeved on the temperature measuring seat (3), one end of the compression spring (4) abuts against the positioning sleeve (1), and the other end abuts against the temperature measuring seat (3); A temperature sensor (5) is fixedly connected to the lower end of the temperature measuring seat (3); A protective tube (6) is arranged inside the generator stator housing (7), and the temperature sensor (5) passes through the protective tube (6).

2. The generator stator temperature measuring device according to claim 1, characterized in that: A threaded hole (32) is provided at the lower end of the temperature measuring seat (3), a thread (51) adapted to the threaded hole (32) is provided at one end of the temperature sensor (5), a positioning pin hole (33) is provided at a position of the temperature measuring seat (3) corresponding to the threaded hole (32), the positioning pin hole (33) is arranged perpendicular to the axis of the threaded hole (32), and the positioning pin is arranged in the positioning pin hole (33).

3. The generator stator temperature measuring device according to claim 1, characterized in that: The material of the protective tube (6) is epoxy resin.

4. The generator stator temperature measuring device according to claim 1, characterized in that: A plurality of temperature sensors (5) are arranged on the generator stator housing (7).

5. The generator stator temperature measuring device according to claim 1, characterized in that: The positioning sleeve (1) is fixedly connected to the generator stator housing (7) via screws (11).

6. The generator stator temperature measuring device according to claim 1, characterized in that: The outer wall of the temperature measuring seat (3) is provided with a groove (34) adapted to the flexible buckle (31), and the flexible buckle (31) can be received in the groove (34).

7. The generator stator temperature measuring device according to claim 1, characterized in that: A rotating button (35) is arranged on the top of the temperature measuring seat (3), and the rotating button (35) can be pressed and rotated to a certain angle to realize the rapid disassembly and assembly of the generator stator temperature measuring device.

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