Static pressure test device for mining flame-proof transformer

Abstract

The utility model discloses a mining flame-proof transformer static pressure test device, and relates to the hydraulic technical field, the mining flame-proof transformer static pressure test device comprises a transformer box, the transformer box comprises a pressure measuring structure, a detection structure and a protection structure, the protection structure comprises a mounting sleeve and a movable block, the electronic pressure tester comprises a mounting sleeve and a movable block, ventilation grooves distributed at equal intervals are formed in the inner wall of the movable block, the movable block is connected to the inner wall of the mounting sleeve in a sliding mode, and the detection structure comprises a pressure measuring instrument, an electromagnetic valve and an L-shaped pipe. And internal air pressure can impact the movable block, the movable block slides in the mounting sleeve when being impacted, airflow can overflow through the ventilation groove, and after exhausting is conducted for a period of time, the internal air is completely exhausted by opening the manual valve, so that the problem of device explosion caused by air pressure difference is solved, and the safety of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pressure, in particular to a static pressure test device for a mine flameproof transformer. Background Art

[0002] The static pressure test device for explosion-proof transformers for mining usually uses an AC high-voltage generator and a withstand voltage capacitor to test the insulation performance of the transformer. During the test, the transformer winding needs to be connected to the withstand voltage capacitor first, and a high voltage is provided by the AC high-voltage generator.

[0003] However, if the traditional device directly exhausts the air after the pressure measurement is completed, the air pressure in the box will not match the external air pressure. Forced exhaust may cause the device to explode. Therefore, the utility model provides a static pressure test device for flameproof transformers for mining. Utility Model Content

[0004] The utility model aims to provide a static pressure test device for a flameproof transformer used in mines.

[0005] In order to solve the problems raised in the above-mentioned background technology, the utility model provides the following technical solutions: a static pressure test device for a mine-use flameproof transformer, comprising a transformer box, the transformer box comprising a pressure measuring structure, a detection structure and a protection structure, the protection structure comprising a mounting sleeve and a movable block, the inner wall of the movable block is provided with equidistantly distributed air permeable grooves, the movable block is slidably connected to the inner wall of the mounting sleeve, the detection structure comprises a pressure gauge, a solenoid valve and an L-shaped tube, the pressure gauge and the solenoid valve are respectively installed on both sides of the outer surface of the L-shaped tube, and the L-shaped tube is plugged into the inside of the transformer box.

[0006] As a further solution of the utility model: the pressure measuring structure includes a manual valve and a vacuum pump, and the manual valve is installed on the top of the transformer box.

[0007] As a further solution of the utility model: the vacuum pump is installed at the center of the top of the transformer box, and the input end of the vacuum pump is connected with an exhaust pipe.

[0008] As a further solution of the utility model: one end of the exhaust pipe passes through the top wall of the transformer box and is placed above the interior of the transformer box.

[0009] As a further solution of the utility model: the transformer box includes a water outlet pipe, a control valve and an electronic pressure tester, one end of the water outlet pipe is connected to one side of the transformer box, and the control valve is installed on the surface of the water outlet pipe.

[0010] As a further solution of the utility model: the manual valve, the mounting sleeve, the movable block, the vacuum pump, the L-shaped tube and the electronic pressure tester are installed on the top of the transformer box in sequence from left to right.

[0011] By adopting the above technical solution, compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model uses the installation sleeve and the movable block. When exhausting in the subsequent process, the electronic pressure tester will measure the air pressure inside the transformer box, and the internal air pressure will impact the movable block. When the movable block is impacted, it slides inside the installation sleeve, and the air flow will overflow through the air permeable groove. After exhausting for a period of time, the manual valve is opened to exhaust all the internal air, thereby reducing the problem of explosion of the device caused by the pressure difference and increasing the safety of the device;

[0013] 2. The utility model uses a pressure gauge, an L-shaped tube and an electromagnetic valve. When the vacuum pump extracts all the air inside the transformer box, a negative pressure is formed inside the transformer box. The L-shaped tube can draw external water into the transformer box, and the electromagnetic valve can be closed in real time. The pressure gauge can perform real-time measurement, thereby increasing the measurement effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall planing surface in the embodiment of the utility model;

[0015] Figure 2 It is an overall plan view of an embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of an L-shaped tube in an embodiment of the utility model.

[0017] In the figure: 1. Transformer box; 11. Water outlet pipe; 12. Control valve; 2. Pressure measuring structure; 21. Manual valve; 22. Vacuum pump; 23. Air extraction pipe; 3. Detection structure; 32. Pressure gauge; 33. Solenoid valve; 34. L-shaped pipe; 4. Protection structure; 41. Installation sleeve; 42. Movable block. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] Example 1, please refer to the attached Figure 1 -Attached Figure 3The utility model provides a technical solution: a static pressure test device for a flameproof transformer for mining, comprising a transformer box 1, the transformer box 1 comprising a pressure measuring structure 2, a detection structure 3 and a protection structure 4, the protection structure 4 comprising a mounting sleeve 41 and a movable block 42, the inner wall of the movable block 42 is provided with equidistantly distributed air permeable grooves, the movable block 42 is slidably connected to the inner wall of the mounting sleeve 41, the detection structure 3 comprises a pressure gauge 32, a solenoid valve 33 and an L-shaped tube 34, the pressure gauge 32 and the solenoid valve 33 are respectively installed on both sides of the outer surface of the L-shaped tube 34, and the L-shaped tube 34 is plugged into the inside of the transformer box 1.

[0020] Please see attached Figure 1 -Attached Figure 2 The transformer box 1 includes a water outlet pipe 11, a control valve 12 and an electronic pressure tester. One end of the water outlet pipe 11 is connected to one side of the transformer box 1. The control valve 12 is installed on the surface of the water outlet pipe 11. The manual valve 21, the mounting sleeve 41, the movable block 42, the vacuum pump 22, the L-shaped pipe 34 and the electronic pressure tester are installed on the top of the transformer box 1 from left to right in sequence.

[0021] In this embodiment, after the measurement is completed, the control valve 12 is opened, and water flows out through the water outlet pipe 11 .

[0022] When in use, through the installation sleeve and the movable block 42, when exhausting later, the electronic pressure tester will measure the air pressure inside the transformer box 1, and the internal air pressure will impact the movable block 42. The movable block 42 slides inside the installation sleeve when impacted, and the air flow will overflow through the air vent. After exhausting for a period of time, the manual valve 21 is opened to exhaust all the internal air, thereby reducing the problem of explosion of the device due to pressure difference and increasing the safety of the device.

[0023] Example 2, please refer to the attached Figure 1 -Attached Figure 3 The utility model provides a technical solution: a static pressure test device for a flameproof transformer for mining, comprising a transformer box 1, the transformer box 1 comprising a pressure measuring structure 2, a detection structure 3 and a protection structure 4, the protection structure 4 comprising a mounting sleeve 41 and a movable block 42, the inner wall of the movable block 42 is provided with equidistantly distributed air permeable grooves, the movable block 42 is slidably connected to the inner wall of the mounting sleeve 41, the detection structure 3 comprises a pressure gauge 32, a solenoid valve 33 and an L-shaped tube 34, the pressure gauge 32 and the solenoid valve 33 are respectively installed on both sides of the outer surface of the L-shaped tube 34, and the L-shaped tube 34 is plugged into the inside of the transformer box 1.

[0024] Please see attached Figure 3The pressure measuring structure 2 includes a manual valve 21 and a vacuum pump 22. The manual valve 21 is installed on the top of the transformer box 1. The vacuum pump 22 is installed at the center of the top of the transformer box 1. The input end of the vacuum pump 22 is connected with an exhaust pipe 23. One end of the exhaust pipe 23 passes through the top wall of the transformer box 1 and is placed above the inside of the transformer box 1.

[0025] In this embodiment, a sealing gasket is provided in the gap between the exhaust pipe 23 and the transformer box 1, and the sealing gasket is used to increase the sealing performance of the entire device.

[0026] When in use, through the pressure gauge 32, the L-shaped tube 34 and the solenoid valve 33, when the vacuum pump 22 extracts all the air inside the transformer box 1, a negative pressure is formed inside the transformer box 1, the L-shaped tube 34 can draw external water into the transformer box 1, and the solenoid valve 33 can be closed in real time, and the pressure gauge 32 will perform real-time measurement, thereby increasing the measurement effect of the device.

[0027] Working principle:

[0028] The first step is to start the vacuum pump 22 to extract the air inside the transformer box 1 through the exhaust pipe 23, and then the transformer box 1 forms a vacuum state. Then, the solenoid valve 33 is opened to pump water into the transformer box 1 through the L-shaped pipe 34 under the action of negative pressure. At this time, the electronic pressure tester will perform real-time testing and display the results.

[0029] The second step, after the test is completed, the airflow pushes the movable block 42 to slide in the installation sleeve 41, and after a period of time, the manual valve 21 is opened to exhaust the air, and the control valve 12 is opened to discharge the water through the outlet pipe 11, and the whole work process ends here.

[0030] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0032] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0033] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A static pressure test device for a flameproof transformer for use in a mine, comprising a transformer box (1), characterized in that: The transformer box (1) comprises a pressure measuring structure (2), a detection structure (3) and a protection structure (4); the protection structure (4) comprises a mounting sleeve (41) and a movable block (42); the inner wall of the movable block (42) is provided with equidistantly distributed air-permeable grooves; the movable block (42) is slidably connected to the inner wall of the mounting sleeve (41); the detection structure (3) comprises a pressure gauge (32), a solenoid valve (33) and an L-shaped tube (34); the pressure gauge (32) and the solenoid valve (33) are respectively mounted on both sides of the outer surface of the L-shaped tube (34); and the L-shaped tube (34) is plugged into the interior of the transformer box (1).

2. The static pressure test device for a flameproof transformer for mining use according to claim 1 is characterized in that: The pressure measuring structure (2) comprises a manual valve (21) and a vacuum pump (22); the manual valve (21) is installed on the top of the transformer box (1).

3. The static pressure test device for a flameproof transformer for mining use according to claim 2 is characterized in that: The vacuum pump (22) is installed at the center of the top of the transformer box (1), and an input end of the vacuum pump (22) is connected through an exhaust pipe (23).

4. The static pressure test device for a flameproof transformer for mining use according to claim 3 is characterized in that: One end of the exhaust pipe (23) passes through the top wall of the transformer box (1) and is placed above the interior of the transformer box (1).

5. The static pressure test device for a flameproof transformer for mining use according to claim 2 is characterized in that: The transformer box (1) comprises a water outlet pipe (11), a control valve (12) and an electronic pressure tester; one end of the water outlet pipe (11) is connected to one side of the transformer box (1); and the control valve (12) is installed on the surface of the water outlet pipe (11).

6. The static pressure test device for a flameproof transformer for mining use according to claim 5 is characterized in that: The manual valve (21), the mounting sleeve (41), the movable block (42), the vacuum pump (22), the L-shaped tube (34) and the electronic pressure tester are installed on the top of the transformer box (1) in sequence from left to right.

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