CN219590038U

CN219590038U - Transformer insulating gas sampling device

Info

Publication number: CN219590038U
Application number: CN202320417555.0U
Authority: CN
Inventors: 李长春
Original assignee: Qingdao Qingdian Electric Group Co ltd
Current assignee: Qingdao Qingdian Electric Group Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-08-25
Anticipated expiration: 2033-03-07

Abstract

The utility model discloses a transformer insulating gas sampling device which comprises a sampling tube, wherein one end of the sampling tube is fixedly connected with a connecting tube, one end of the connecting tube, which is close to the sampling tube, is provided with a first valve, the bottom of the sampling tube is provided with a vacuum pump, one end of the vacuum pump, which is close to the sampling tube, is provided with a second valve, one end of the sampling tube, which is far away from the connecting tube, is fixedly connected with an additional tube, one end, which is far away from the sampling tube, is fixedly connected with a motor, a motor driving shaft penetrates through the additional tube and is fixedly connected with a threaded rod, and the outer side wall of one end, which is far away from the motor, of the threaded rod is provided with a piston. According to the utility model, the motor, the sampling tube, the additional tube and the piston are mutually matched, the motor drives the threaded rod to rotate, the piston is driven to move in the additional tube of the sampling tube, negative pressure in the sampling tube is assisted to perform air extraction, the air extraction efficiency of the sampling tube is ensured, and the air sampling efficiency is improved.

Description

Transformer insulating gas sampling device

Technical Field

The utility model relates to the technical field of gas sampling equipment, in particular to a transformer insulating gas sampling device.

Background

The gas-insulated transformer uses SF6 gas and liquid-gas two-phase fluoride as insulating medium and cooling medium, and depends on its physical state change to cool the transformer body, and has excellent performance in fire prevention, safety, electricity reliability and other aspects. In the production and use process, in order to detect whether the transformer is qualified or not and how the transformer is in use, detection is often required, and insulating gas in the SF6 gas insulation transformer is an important link in detection, and in the detection process, a certain amount of gas is often required to be extracted from the transformer for detection.

At present, the existing sampling device mostly adopts a vacuum pump to pump the inside of a sampling tube into a negative pressure state, then samples the insulating gas in a transformer, and the negative pressure in the sampling tube is reduced along with the large collection of the gas into the sampling tube, so that the pumping capacity of the sampling tube is reduced, and the collection efficiency of the gas is further influenced, therefore, the transformer insulating gas sampling device is proposed.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

The utility model aims to provide a transformer insulating gas sampling device, which ensures the extraction efficiency of the sampling post section of a sampling tube, thereby improving the overall gas sampling efficiency of the sampling tube.

In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

the transformer insulating gas sampling device comprises a sampling tube, a connecting tube is fixedly connected to one end of the sampling tube, a first valve is arranged at one end of the connecting tube, which is close to the sampling tube, a vacuum pump is arranged at the bottom of the sampling tube, a second valve is arranged at one end, which is close to the sampling tube, of the vacuum pump, an additional tube is fixedly connected to one end, which is far away from the connecting tube, of the sampling tube, a motor is fixedly connected to one end, which is far away from the sampling tube, of the additional tube, a motor driving shaft penetrates through the additional tube and is fixedly connected with a threaded rod, and a piston is arranged on the outer side wall, which is far away from one end, which is far away from the motor, of the threaded rod.

As a preferable scheme of the transformer insulating gas sampling device, the vacuum pump penetrates through the bottom of the sampling tube and is communicated with the inside of the sampling tube, so that the sampling tube is conveniently pumped.

As a preferable scheme of the transformer insulating gas sampling device, the threaded rod penetrates through the center of the piston and is in threaded connection with the piston, and when the threaded rod rotates, the piston is conveniently driven to move.

As a preferable scheme of the transformer insulating gas sampling device, the outer side wall of the piston is fixedly connected with the sliding block, and the inner wall of the sampling tube is provided with the sliding groove corresponding to the sliding block, so that the piston is conveniently limited.

As a preferable scheme of the transformer insulating gas sampling device, the motor is a servo motor, the motor is communicated with an external power supply, and a servo motor driving shaft can be self-locked, so that the position of a piston can be fixed conveniently.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the motor, the sampling tube, the additional tube and the piston are mutually matched, the motor drives the threaded rod to rotate, the piston is driven to move in the additional tube of the sampling tube, negative pressure in the sampling tube is assisted to perform air extraction, the air extraction efficiency of the sampling tube is ensured, and the air sampling efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following detailed description will be given with reference to the accompanying drawings and detailed embodiments, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. Wherein:

FIG. 1 is a schematic diagram of a transformer insulating gas sampling apparatus according to the present utility model;

FIG. 2 is a schematic diagram of an additional tube structure of the insulating gas sampling apparatus of the transformer of the present utility model;

fig. 3 is a schematic diagram of a piston structure of the insulating gas sampling device of the transformer of the present utility model.

Legend description: 1. a sampling tube; 2. a connecting pipe; 3. a first valve; 4. a vacuum pump; 5. a second valve; 6. an additional tube; 7. a motor; 8. a threaded rod; 9. a piston; 10. a slide block; 11. and a sliding groove.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

Next, the present utility model will be described in detail with reference to the drawings, wherein the sectional view of the device structure is not partially enlarged to general scale for the convenience of description, and the drawings are only examples, which should not limit the scope of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1-3, the utility model provides a transformer insulating gas sampling device, which comprises a sampling tube 1, wherein one end of the sampling tube 1 is fixedly connected with a connecting tube 2, one end of the connecting tube 2, which is close to the sampling tube 1, is provided with a first valve 3, the bottom of the sampling tube 1 is provided with a vacuum pump 4, one end, which is close to the sampling tube 1, of an exhaust tube of the vacuum pump 4 is provided with a second valve 5, one end, which is far away from the connecting tube 2, of the sampling tube 1 is fixedly connected with an additional tube 6, one end, which is far away from the sampling tube 1, of the additional tube 6 is fixedly connected with a motor 7, a driving shaft of the motor 7 penetrates through the additional tube 6 and is fixedly connected with a threaded rod 8, and one end outer side wall, which is far away from the motor 7, of the threaded rod 8 is provided with a piston 9.

Referring to fig. 1 again, in order to facilitate the evacuation of the sampling tube 1, specifically, the evacuation tube of the vacuum pump 4 penetrates through the bottom of the sampling tube 1 and is connected to the inside of the sampling tube 1.

Referring again to fig. 2 and 3, in order to facilitate the movement of the piston 9 in the additional tube 6, in particular, a threaded rod 8 extends through the centre of the piston 9 and is screwed thereto.

Referring to fig. 2 and 3 again, in order to facilitate limiting the piston 9, specifically, a sliding block 10 is fixedly connected to an outer side wall of the piston 9, and a sliding groove 11 corresponding to the sliding block 10 is provided on an inner wall of the sampling tube 1.

Referring to fig. 1 again, in order to facilitate fixing the position of the piston 9, specifically, the motor 7 is a servo motor, the motor 7 is connected with an external power supply, and the driving shaft of the servo motor can realize self-locking, so that the stability of the position of the piston 9 is ensured.

When the sampling tube is specifically used, firstly, a worker connects the connecting tube 2 with a transformer to be sampled, closes the first valve 3, opens the second valve 5, pumps air inside the sampling tube 1, closes the second valve 5 to open the first valve 3 after a certain negative pressure is formed in the sampling tube 1, simultaneously starts the motor 7, and drives the threaded rod 8 to rotate by the motor 7, thereby driving the piston 9 to slide along the sliding groove 11, and moves towards one end far away from the connecting tube 2 in the additional tube 6 to assist the sampling tube 1 in pumping air.

Namely, after the negative pressure of the sampling tube 1 is reduced along with the suction, the air extraction efficiency of the sampling tube 1 is ensured through the movement of the piston 9, so that the gas sampling efficiency is improved.

Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a transformer insulating gas sampling device, includes sample section of thick bamboo (1), its characterized in that, sample section of thick bamboo (1) one end fixedly connected with connecting pipe (2), the one end that connecting pipe (2) are close to sample section of thick bamboo (1) is provided with first valve (3), sample section of thick bamboo (1) bottom is provided with vacuum pump (4), the one end that vacuum pump (4) exhaust tube is close to sample section of thick bamboo (1) is provided with second valve (5), the one end fixedly connected with additional pipe (6) of connecting pipe (2) are kept away from to sample section of thick bamboo (1), the one end fixedly connected with motor (7) of additional pipe (6) keep away from sample section of thick bamboo (1), motor (7) drive shaft runs through additional pipe (6) and fixedly connected with threaded rod (8), the one end lateral wall that motor (7) were kept away from to threaded rod (8) is provided with piston (9).

2. The transformer insulating gas sampling device according to claim 1, wherein the vacuum pump (4) exhaust tube penetrates through the bottom of the sampling tube (1) and is communicated with the inside of the sampling tube (1).

3. Transformer insulating gas sampling device according to claim 1, characterized in that the threaded rod (8) extends through the centre of the piston (9) and is screwed thereto.

4. The transformer insulating gas sampling device according to claim 1, wherein a sliding block (10) is fixedly connected to the outer side wall of the piston (9), and a sliding groove (11) corresponding to the sliding block (10) is formed in the inner wall of the sampling tube (1).

5. The transformer insulating gas sampling device according to claim 1, wherein the motor (7) is a servo motor, the motor (7) being connected to an external power source.