A fixing device for a transformer winding temperature meter

Abstract

A fixing device for a transformer winding thermometer is disclosed. This utility model relates to the field of transformer technology. A mounting base is fixedly installed on the lower side wall of a base. Mounting positions are provided on both the front and rear side walls of the base. Two connecting seats are respectively located within the mounting positions on the front and rear sides. The connecting seats are screwed to the base via a rotating shaft. A spline sleeve is screwed onto the connecting seat via a bearing. A side support shaft is movably inserted into the spline sleeve, and the side support shaft and spline sleeve are slidably connected via a spline engagement. Two positioning sleeves are symmetrically arranged on the front and rear sides of the mounting base, and the positioning sleeves are fixedly installed on the base. The positioning sleeves are engaged with the side support shaft. This device addresses the need to install the thermometer on the top cover of a transformer housing, providing an openable and locking support structure. This allows the structure to be fixed inside the transformer housing even without a suitable mounting position, thus enabling the installation of the thermometer.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and specifically to a fixing device for a transformer winding thermometer. Background Technology

[0002] Existing transformer winding thermometers measure the temperature of the oil surface inside the transformer using a temperature sensor. After obtaining the corresponding electrical parameters through the sensor, a coefficient conversion is performed to obtain the temperature of the winding coil core. This type of thermometer does not directly contact the high-temperature winding core, allowing the temperature sensor to operate in a relatively low-temperature environment. Therefore, the manufacturing cost of this type of thermometer is relatively low in terms of structure and material selection, and it is currently a relatively common type of thermometer on the market.

[0003] However, due to different transformer models, the size and temperature detection range of the corresponding winding thermometers will vary, which can easily lead to matching and installation problems. Therefore, it is necessary to design a fixing device to adapt various winding thermometer models to different transformer models to solve the problem of matching and installing multiple winding thermometer models. Utility Model Content

[0004] The purpose of this utility model is to address the defects and deficiencies of the existing technology by providing a fixing device for a transformer winding thermometer. It is designed for the purpose of installing the thermometer on the top cover of the transformer housing by setting an openable and clamping support structure, thereby enabling the structure to be fixed in the transformer housing even when there is no suitable installation position, thus realizing the installation of the thermometer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] It includes a base and a mounting bracket, wherein the mounting bracket is fixedly mounted on the lower side wall of the base, and it also includes:

[0007] The base has mounting positions on both its front and rear side walls. There are two connecting seats, one on each side, and they are screwed onto the base via a pivot.

[0008] The spline sleeve is screwed onto the connecting seat via a bearing;

[0009] A side support shaft is movably inserted into a spline sleeve, and the side support shaft and the spline sleeve are slidably configured through a spline engagement.

[0010] The positioning sleeves are two in number and are symmetrically arranged on the front and rear sides of the mounting base. The positioning sleeves are fixedly mounted on the base and are configured to cooperate with the side support shaft.

[0011] Preferably, the inner wall of the positioning sleeve is integrally formed with a male thread, and the side support shaft is integrally formed with a female thread. The side support shaft is screwed to the male thread on the positioning sleeve through the female thread.

[0012] Preferably, a connecting sleeve is fixedly fitted onto the spline sleeve, and one-way locking teeth are integrally formed and distributed at equal angles on the outer wall of the connecting sleeve. A pawl is screwed onto the connecting seat via a self-rebound rotating shaft, and the pawl and the one-way locking teeth on the connecting sleeve are engaged with each other.

[0013] Preferably, a support seat is screwed onto the end of the side support shaft away from the positioning sleeve via a bearing. Two support feet are screwed onto the support seat via a rotating shaft, and the two support feet are arranged symmetrically from left to right. A torsion spring is sleeved on the rotating shaft of the support foot, and one column of the torsion spring is fixedly mounted on the support seat, while the other column of the torsion spring is fixedly mounted on the support foot.

[0014] Preferably, a limiting seat is fixedly provided on the support base, and the support leg is movably abutted against the limiting seat.

[0015] Preferably, the side support shaft is replaced by a connecting bolt, which is movably inserted into the spline sleeve, and the connecting bolt and the spline sleeve are slidably connected by a keyway, with the nut end of the connecting bolt abutting against the end wall of the spline sleeve.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This solution is designed for transformer enclosures in different installation environments. The top cover is equipped with a rotatable connector that can change the installation direction. A spline sleeve is then installed on the connector. By choosing to install a side support shaft inside the spline sleeve or to install connecting bolts, different installation methods can be selected to install the base inside the enclosure cover.

[0018] 2. This solution involves setting a support base on the side support shaft, and then setting a support foot on the support base that is supported by a torsion spring. This allows the side support shaft to extend and support the inner wall of the transformer box cover through the support foot, thereby achieving tension and installing the base inside the box cover. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the house structure of this utility model.

[0020] Figure 2 yes Figure 1 The bottom side view.

[0021] Figure 3 This is a structural schematic diagram of the connecting seat, splined shaft, and connecting sleeve in this utility model.

[0022] Figure 4This is a structural schematic diagram of the side support shaft and support seat in this utility model.

[0023] Figure 5 This is a structural schematic diagram of the connecting seat and connecting bolts in this utility model.

[0024] Figure 6 yes Figure 5 The bottom side view.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Base, 2. Mounting seat, 3. Connecting seat, 4. Mounting position, 5. Spline sleeve, 6. Side support shaft, 7. Positioning sleeve, 8. Male thread, 9. Female thread, 10. Connecting sleeve, 11. One-way locking tooth, 12. Pawl, 13. Support seat, 14. Support foot, 15. Torsion spring, 16. Limiting seat, 17. Connecting bolt. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] like Figure 1-6 As shown, the specific implementation adopts the following technical solution:

[0029] This specific embodiment includes a base 1 and a mounting base 2. The mounting base 2 is fixedly mounted on the lower side wall of the base 1. Mounting positions 4 are provided on both the front and rear sides of the base 1. A connecting seat 3 is provided within each mounting position 4, and the connecting seat 3 is spun to the base 1 via a rotating shaft. A spline sleeve 5 is connected to the connecting seat 3 via a bearing. A side support shaft 6 is movably mounted within the spline sleeve 5. A keyway that mates with the spline sleeve 5 is provided on the side wall of the side support shaft 6, and a female thread 9 is provided on the side wall of the side support shaft 6. Positioning sleeves 7 are provided on both the front and rear sides of the mounting base 2, and the positioning sleeves 7 are fixedly mounted on the base 1. A male thread 8 is integrally formed on the inner wall of the positioning sleeve. The side support shaft 6 is inserted into the positioning sleeve 7, and the female thread 9 of the side support shaft 6 interacts with the male thread 8 in the positioning sleeve 7. The side support shaft 6, away from the positioning sleeve 7, is screwed with a support seat 13 via a bearing. The support seat 13 has two symmetrically arranged support feet 14, which are screwed onto the support seat 13 via a rotating shaft. A torsion spring 15 is sleeved on the rotating shaft of the support foot 14, with one column of the torsion spring 15 fixedly mounted on the support seat 13 and the other column fixedly mounted on the support foot 14. A limit seat 16 is fixedly mounted on the support seat 13, and the support foot 14 is movably mounted within the limit seat 16. A connecting sleeve 10 is fixedly mounted on the spline sleeve 5. Several one-way locking teeth 11 are fixedly arranged at equal angles on the outer wall of the connecting sleeve 10. A pawl 12 is screwed onto the connecting seat 3 via a self-rebound rotating shaft, and the pawl 12 and the one-way locking teeth 11 on the connecting sleeve 10 are mutually engaged.

[0030] As another embodiment, the side support shaft 6 is replaced with a connecting bolt 17. The connecting bolt 17 is inserted into the spline sleeve 5, and a keyway that mates with the spline sleeve 5 is provided on the side wall of the connecting bolt 17. The connecting seat 3 is laid flat, and the nut end of the connecting bolt 17 is located on the lower end wall of the spline sleeve 5.

[0031] When using this device, install the thermometer on the mounting base 2, and place the base 1 inside the upper cover of the transformer housing. If there is no connection position for mounting the base 1 inside the upper cover of the transformer, rotate the connecting base 3 to make the spline sleeve 5 rotate and flatten, and align the spline sleeve 5 and the positioning sleeve 7 coaxially. Then, pass the side support shaft 6 through the spline sleeve 5 and insert it into the positioning sleeve 7. Next, manually turn the pawl 12 to disengage it from the one-way locking tooth 11. Rotate the connecting sleeve 10 and drive the spline sleeve 5 to rotate, thereby causing the spline sleeve 5 to drive the side support shaft 6 to rotate. The female thread 9 on the side support shaft 6 engages with the male thread 8 inside the positioning sleeve 7, so that the side support shaft 6 is screwed into the positioning sleeve 7. Finally, place the base 1 inside the upper cover of the transformer housing, so that the base 1 is placed on the transformer housing. On the inner wall of the upper cover, the pawl 12 is then released and the connecting sleeve 10 is rotated in the opposite direction. At this time, the one-way tooth 11 on the connecting sleeve 10 cooperates with the pawl 12 to realize that the connecting sleeve 10 can only rotate in one direction. The connecting sleeve 10 drives the side support shaft 6 to rotate in the opposite direction, so that the side support shaft 6 rotates out from the positioning sleeve 7 and pushes the support seat 13, and makes the support foot 14 on the support seat 13 abut against the inner wall of the upper cover of the transformer box. The spline sleeve 5 is continuously rotated and the side support shaft 6 is driven to extend, so that the side support shaft 6 abuts against the inner wall of the upper cover of the transformer box through the support foot 14. Thus, the inner wall of the upper cover of the transformer box is supported by the side support shaft 6 and the support foot 14, so that the base 1 is installed in the box cover, that is, the installation of the base 1 and the thermometer on the base 1 is completed.

[0032] When there is a mounting position 4 on the upper inner wall of the transformer box cover, rotate the connecting seat 3 to make the connecting seat 3 flat and align the spline sleeve 5 with the bolt hole of the mounting position 4. Then, insert the connecting bolt 17 into the spline sleeve 5 and rotate the connecting bolt 17 to tighten it into the mounting bolt hole on the box cover.

[0033] Compared with the prior art, the beneficial effects of this utility model are:

[0034] 1. This device is equipped with a rotatable and adjustable connecting seat 3. A side support shaft 6 is installed on the connecting seat 3 through a spline sleeve 5, or a connecting bolt 17 is installed through the spline sleeve 5, thereby realizing two different ways of connecting with the box cover, thus fixing the base 1 inside the upper cover of the transformer box, that is, installing the thermometer on the mounting seat 2 on the base 1.

[0035] 2. In this device, the spline sleeve 5 is screwed onto the connecting seat 3 via a bearing, and a connecting sleeve 10 with a one-way retaining tooth 11 is provided on the spline sleeve 5. A pawl 12 is provided on the connecting seat 3 to cooperate with the one-way retaining tooth 11 on the connecting sleeve 10. The female thread 9 on the side support shaft 6 cooperates with the male thread 8 in the positioning sleeve 7, so that the connecting sleeve 10 drives the spline sleeve 5 and the side support shaft 6 inside to rotate and extend out of the positioning sleeve 7. In this way, the side support shaft 6 pushes the support seat 13 and the support claw on the support seat 13 to support the inner wall of the transformer box cover, thereby fixing the base 1 inside the box cover.

[0036] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixing device for a transformer winding thermometer, comprising a base (1) and a mounting base (2), wherein the mounting base (2) is fixedly disposed on the lower side wall of the base (1); characterized in that, It also includes: The connecting seat (3) and the base (1) are provided with mounting positions (4) on both the front and rear side walls. There are two connecting seats (3) and they are respectively set in the mounting positions (4) on the front and rear sides. The connecting seats (3) are screwed to the base (1) through a rotating shaft. The spline sleeve (5) is screwed onto the connecting seat (3) via a bearing; Side support shaft (6), the side support shaft (6) is movably inserted into the spline sleeve (5), and the side support shaft (6) and the spline sleeve (5) are slidably configured through spline engagement; Positioning sleeve (7): Two positioning sleeves (7) are arranged symmetrically on the front and rear sides of the mounting base (2), and the positioning sleeves (7) are fixedly mounted on the base (1). The positioning sleeves (7) are configured to cooperate with the side support shaft (6).

2. The fixing device for a transformer winding thermometer according to claim 1, characterized in that: The inner wall of the positioning sleeve (7) is integrally formed with a male thread (8), and the side support shaft (6) is integrally formed with a female thread (9). The side support shaft (6) is screwed to the male thread (8) on the positioning sleeve (7) through the female thread (9).

3. The fixing device for a transformer winding thermometer according to claim 2, characterized in that: A connecting sleeve (10) is fixedly fitted onto the spline sleeve (5). One-way locking teeth (11) are integrally formed on the outer side wall of the connecting sleeve (10) at equal angles. A pawl (12) is spun onto the connecting seat (3) via a self-rebound rotating shaft. The pawl (12) and the one-way locking teeth (11) on the connecting sleeve (10) are engaged with each other.

4. The fixing device for a transformer winding thermometer according to claim 3, characterized in that: A support seat (13) is screwed onto one end of the side support shaft (6) away from the positioning sleeve (7) via a bearing. Two support feet (14) are screwed onto the support seat (13) via a rotating shaft, and the two support feet (14) are arranged symmetrically on the left and right. A torsion spring (15) is sleeved on the rotating shaft of the support foot (14), and one column foot of the torsion spring (15) is fixedly mounted on the support seat (13), and the other column foot of the torsion spring (15) is fixedly mounted on the support foot (14).

5. The fixing device for a transformer winding thermometer according to claim 4, characterized in that: A limiting seat (16) is fixedly installed on the support base (13), and the support foot (14) is movably abutted against the limiting seat (16).

6. The fixing device for a transformer winding thermometer according to claim 1, characterized in that: The side support shaft (6) is replaced by a connecting bolt (17). The connecting bolt (17) is movably inserted into the spline sleeve (5), and the connecting bolt (17) and the spline sleeve (5) are slidably connected by a keyway. The nut end of the connecting bolt (17) abuts against the end wall of the spline sleeve (5).

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