Natural ester insulating oil density testing device

Abstract

The utility model relates to a natural ester insulating oil density testing device which comprises a shell, a densimeter is arranged on the lower side in the shell, a liquid inlet is formed in the upper end of the shell, and a defoaming mechanism is arranged on the upper side in the shell; the defoaming mechanism comprises a defoaming tank, the defoaming tank is fixedly installed on the upper side in the shell, the liquid inlet is communicated with the interior of the defoaming tank, a motor is fixedly installed at the upper end of the shell, the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft rotationally penetrates into the defoaming tank, the rotating shaft is fixedly connected with a stirring rod, and an exhaust port is formed in the upper end of the defoaming tank; according to the defoaming device, the defoaming mechanism is arranged, so that oil liquid in the defoaming tank can be stirred, bubbles in the oil liquid can be discharged through stirring, and the defoaming effect is improved; the exhausted gas and the gas in the defoaming tank are exhausted to the outside of the container through the sucking pump and the exhaust pipe, so that the defoaming of the oil liquid is realized, the interference of bubbles on detection is avoided, and the test accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of insulating oil testing, and particularly relates to a density testing device for natural ester insulating oil. Background Art

[0002] Natural ester insulating oil is an insulating and cooling medium used in transformers. The density of natural ester insulating oil is one of the important indicators for evaluating its physical properties, and is of great significance for ensuring the normal operation of electrical equipment such as transformers. The density test of natural ester insulating oil requires the use of special density testing equipment, which usually includes a densitometer, a thermometer, and related auxiliary devices;

[0003] In the current density detection process of insulating oil, the air bubbles in the oil liquid will occupy a certain volume, resulting in a lower measured density value and being unable to accurately reflect the true density of the sample. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a density testing device for natural ester insulating oil to solve the problems existing in the background art.

[0005] To achieve the above technical purpose, the technical solution adopted by the utility model is as follows: A density testing device for natural ester insulating oil, including a housing. A densitometer is provided on the lower side inside the housing. A liquid inlet is opened at the upper end of the housing. An anti-foaming mechanism is provided on the upper side inside the housing;

[0006] The anti-foaming mechanism includes an anti-foaming tank, which is fixedly installed on the upper side inside the housing. The liquid inlet is communicated with the inside of the anti-foaming tank. A motor is fixedly installed at the upper end of the housing. The output end of the motor is fixedly connected with a rotating shaft, and the rotating shaft rotates through to the inside of the anti-foaming tank. The rotating shaft is fixedly connected with a plurality of stirring rods. An exhaust port communicating with the outside of the housing is opened at the upper end of the anti-foaming tank. A exhaust pipe is fixedly installed at the exhaust port. A suction pump connected to the exhaust pipe is fixedly installed at the upper end of the housing. By setting the anti-foaming mechanism, the oil liquid inside the anti-foaming tank can be stirred, and the air bubbles in the oil liquid are discharged by stirring. The discharged gas and the gas inside the anti-foaming tank are discharged to the outside of the container through the suction pump and the exhaust pipe, thereby realizing the defoaming of the oil liquid, avoiding the interference of air bubbles on the detection, and improving the accuracy of the test.

[0007] An injection mechanism is provided at the liquid inlet. The injection mechanism includes a push tube which is slidably installed inside the liquid inlet. A sealing plug is provided at the lower part of the push tube. A spring is fixedly connected between the sealing plug and the upper end of the inner wall of the defoaming tank. A plurality of openings are formed in the lower part of the push tube. By providing the injection mechanism, the device is isolated from the outside when the injector is not inserted, and it will only communicate with the injector when the injector is inserted to a certain extent, so as to minimize the entry of external substances into the defoaming tank during the injection process and avoid affecting the detection.

[0008] Filter meshes are fixedly installed at the plurality of openings, so as to further isolate external substances from entering the defoaming tank.

[0009] A limiting groove is formed in the inner side of the upper part of the liquid inlet. A limiting block matching the limiting groove is fixedly installed on the push tube, so as to limit the vertical movement of the push tube, avoiding both the over - deep push from affecting the assembly between the sealing plug and the defoaming tank and the push tube from popping out of the liquid inlet.

[0010] The lower part of the defoaming tank is communicated with the densitometer through a connecting pipe, and a valve is provided at the connecting pipe, so as to perform density detection on the oil liquid after defoaming.

[0011] The outer layer of the housing is a heat - insulating layer and the inner layer is a heat - preserving layer, so as to provide heat - insulating protection for the interior, reduce the influence of the external temperature on the internal temperature, and improve the detection accuracy.

[0012] The beneficial effects of the present utility model:

[0013] By providing the defoaming mechanism, the oil liquid inside the defoaming tank can be stirred, and the bubbles in the oil liquid are discharged by stirring. The discharged gas and the gas inside the defoaming tank are discharged to the outside of the container through the air - extraction pump and the exhaust pipe, so as to realize defoaming of the oil liquid, avoid the interference of bubbles on the detection, and improve the accuracy of the test. By providing the injection mechanism, the device is isolated from the outside when the injector is not inserted, and it will only communicate with the injector when the injector is inserted to a certain extent, so as to minimize the entry of external substances into the defoaming tank during the injection process and avoid affecting the detection. Description of the Drawings

[0014] The present utility model can be further illustrated by the non - restrictive embodiments given in the drawings.

[0015] Figure 1 It is a schematic structural diagram of the natural ester insulating oil density test device of the present utility model;

[0016] Figure 2 It is a schematic cross - sectional view of the natural ester insulating oil density test device of the present utility model;

[0017] Figure 3 This is the front sectional view of the density testing device for natural ester insulating oil of the present utility model.

[0018] The main component symbols are explained as follows: housing 100, densitometer 101, liquid inlet 102, defoaming tank 103, motor 104, rotating shaft 105, stirring rod 106, exhaust port 107, exhaust pipe 108, air extraction pump 109, pushing pipe 200, sealing plug 201, spring 202, opening 203, filter screen 301, limiting groove 302, limiting block 303, connecting pipe 401, valve 402, heat insulation layer 501, heat preservation layer 502. Specific embodiments

[0019] In order to enable those skilled in the art to better understand the present utility model, the technical solution of the present utility model will be further described below in conjunction with the drawings and embodiments.

[0020] Embodiment 1:

[0021] As Figures 1-3 shown, the density testing device for natural ester insulating oil includes a housing 100. A densitometer 101 is provided on the lower side inside the housing 100. A liquid inlet 102 is opened at the upper end of the housing 100. A defoaming mechanism is provided on the upper side inside the housing 100;

[0022] The defoaming mechanism includes a defoaming tank 103. The defoaming tank 103 is fixedly installed on the upper side inside the housing 100. The liquid inlet 102 is communicated with the inside of the defoaming tank 103. A motor 104 is fixedly installed at the upper end of the housing 100. The output end of the motor 104 is fixedly connected to a rotating shaft 105. The rotating shaft 105 rotates through to the inside of the defoaming tank 103. The rotating shaft 105 is fixedly connected with a plurality of stirring rods 106. An exhaust port 107 communicating with the outside of the housing 100 is opened at the upper end of the defoaming tank 103. An exhaust pipe 108 is fixedly installed at the exhaust port 107. An air extraction pump 109 connected to the exhaust pipe 108 is fixedly installed at the upper end of the housing 100. By providing the defoaming mechanism, the oil liquid inside the defoaming tank 103 can be stirred, the bubbles in the oil liquid can be discharged by stirring, and the discharged gas and the gas inside the defoaming tank 103 are discharged to the outside of the container through the air extraction pump 109 and the exhaust pipe 108, so as to realize defoaming of the oil liquid, avoid the interference of bubbles on the detection, and improve the accuracy of the test.

[0023] An injection mechanism is provided at the liquid inlet 102. The injection mechanism includes a push tube 200 which is slidably installed inside the liquid inlet 102. A sealing plug 201 is provided at the lower part of the push tube 200. A spring 202 is fixedly connected between the upper end of the inner wall of the sealing plug 201 and the defoaming tank 103. A plurality of openings 203 are formed in the lower part of the push tube 200. By providing the injection mechanism, the device is isolated from the outside when the injector is not inserted, and it will only communicate with the injector after the injector is inserted to a certain extent, so as to minimize the entry of external substances into the defoaming tank 103 during the injection process and avoid affecting the detection.

[0024] Filter screens 301 are fixedly installed at the plurality of openings 203, so as to further isolate external substances from entering the defoaming tank 103.

[0025] A limiting groove 302 is formed in the inner side of the upper part of the liquid inlet 102. A limiting block 303 matching the limiting groove 302 is fixedly installed on the push tube 200, so as to limit the vertical movement of the push tube 200, which not only avoids the influence of excessive pushing on the assembly between the sealing plug 201 and the defoaming tank 103, but also avoids the push tube 200 from popping out of the liquid inlet 102.

[0026] The lower part of the defoaming tank 103 is communicated with the densitometer 101 through a connecting pipe 401, and a valve 402 is provided at the connecting pipe 401, so as to perform density detection on the oil liquid after defoaming.

[0027] The outer layer of the housing 100 is a heat insulation layer 501, and the inner layer is a heat preservation layer 502, so as to provide heat insulation protection for the interior, reduce the influence of the external temperature on the internal temperature, and improve the detection accuracy.

[0028] When this embodiment is in use, insert the injector from the liquid inlet 102, push the injector inward to make it contact with the push tube 200 and push it. The push tube 200 drives the sealing plug 201 to move downward, so as to contact and seal the liquid inlet 102, and stretch the spring 202. Start the oil liquid injection. The oil liquid enters the defoaming tank 103 from the openings 203 of the push tube 200. After the injection is completed, take out the injector. The spring 202 contracts, so that the sealing plug 201 and the push tube 200 are reset. Start the motor 104. The motor drives the rotating shaft 105 to rotate, and the rotating shaft 105 drives the stirring rod 106 to rotate to stir the oil liquid in the defoaming tank 103. At the same time, start the air extraction pump 109, so that the gas inside the defoaming tank 103 is discharged from the exhaust pipe 108.

[0029] In this embodiment, by setting up a defoaming mechanism, the oil liquid inside the defoaming tank 103 can be stirred, and the bubbles in the oil liquid are discharged by the stirring. The discharged gas and the gas inside the defoaming tank 103 are discharged to the outside of the container through the air extraction pump 109 and the exhaust pipe 108, so as to achieve defoaming of the oil liquid, avoid the interference of bubbles on the detection, and improve the accuracy of the test. By setting up an injection mechanism, the device is isolated from the outside when the injector is not inserted, and it will only be connected to the injector after the injector is inserted to a certain extent, so as to minimize the entry of external substances during the injection process into the defoaming tank 103 and avoid affecting the detection.

[0030] The above embodiments only exemplarily illustrate the principles and effects of the present invention, rather than being used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A natural ester insulating oil density test device, comprising a housing, a density meter is provided on the lower side of the housing, and a liquid inlet is provided on the upper end of the housing, characterized in that: A defoaming mechanism is provided on the upper side of the interior of the shell; The defoaming mechanism includes a defoaming tank, which is fixedly installed on the upper side of the shell, the liquid inlet is connected to the inside of the defoaming tank, a motor is fixedly installed on the upper end of the shell, a rotating shaft is fixedly connected to the output end of the motor, the rotating shaft rotates and passes through the inside of the defoaming tank, a plurality of stirring rods are fixedly connected to the rotating shaft, an exhaust port connected to the outside of the shell is opened on the upper end of the defoaming tank, an exhaust pipe is fixedly installed at the exhaust port, and an air pump connected to the exhaust pipe is fixedly installed on the upper end of the shell.

2. The natural ester insulating oil density testing device according to claim 1, characterized in that: An injection mechanism is provided at the liquid inlet, and the injection mechanism includes a push tube, which is slidably installed inside the liquid inlet. A sealing block is provided at the lower part of the push tube, and a spring is fixedly connected between the sealing block and the upper end of the inner wall of the defoaming tank. A plurality of openings are opened at the lower part of the push tube.

3. The natural ester insulating oil density testing device according to claim 2, characterized in that: Filter screens are fixedly installed at a plurality of the openings.

4. The natural ester insulating oil density test device according to claim 2, characterized in that: A limiting groove is arranged on the inner side of the upper part of the liquid inlet, and a limiting block matching the limiting groove is fixedly mounted on the push tube.

5. The natural ester insulating oil density test device according to claim 1, characterized in that: The lower part of the defoaming tank is communicated with the density meter through a connecting pipe, and a valve is arranged at the connecting pipe.

6. The natural ester insulating oil density test device according to claim 1, characterized in that: The outer layer of the shell is a heat insulation layer, and the inner layer is a thermal insulation layer.

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