Natural ester insulating oil closed sampling device

Abstract

The utility model belongs to the technical field of closed sampling devices, and particularly relates to a closed sampling device for natural ester insulating oil. Comprising a box body, a sealing tank is arranged in the box body, the sealing tank is communicated with an inlet pipe, the inlet pipe is fixedly provided with an inlet quick connector, the inlet quick connector is fixedly connected with an inlet valve and a pressure gauge, the sealing tank is communicated with an outlet pipe, the outlet pipe penetrates through the box body, the outlet pipe is fixedly connected with an outlet valve, and the outlet valve is fixedly connected with an outlet quick connector. The box body is provided with an object containing basket, a plurality of sampling pipes are arranged in the object containing basket, and an emptying system is arranged between the inlet pipe and the outlet pipe.

Description

Technical Field

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

[0002] Natural ester is a renewable resource with strong biodegradability. In its triglyceride chemical structure, the three hydroxyl groups of glycerol are esterified by different fatty acids. It belongs to class K high flash point transformer insulating oil, with a flash point up to 360 °C, low flammability and a certain self-extinguishing function. In terms of electrical properties, the breakdown voltage strength of natural ester insulating oil after thermal aging is better than that of mineral insulating oil. Natural ester is a natural plant product, does not contain sulfur element, will not react with the metal copper in the transformer to change the electric field strength, thus reducing the equipment failure risk;

[0003] Natural ester has a high content of unsaturated oleic acid, is prone to oxidation or hydrolysis. This essential characteristic in its structure determines its poor oxidation stability, strong water absorption capacity (high acid value), and fast biodegradation. Therefore, we propose a closed sampling device for natural ester insulating oil to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a closed sampling 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:

[0006] A closed sampling device for natural ester insulating oil includes a box body. A sealed tank is arranged inside the box body, and the sealed tank is used for storing the natural ester insulating oil. The upper end of the sealed tank is communicated with an inlet pipe, and the upper end of the inlet pipe penetrates through the top of the box body. An inlet quick connector is fixedly installed at the top end of the inlet pipe. The natural ester insulating oil is stored in the sealed tank by connecting the inlet quick connector. An inlet valve and a pressure gauge are fixedly connected in sequence below the inlet quick connector. The inlet valve can adjust the speed of the natural ester insulating oil entering the sealed tank, and the pressure gauge can observe the pressure in the sealed tank. The lower end of the sealed tank is communicated with an outlet pipe, and the outlet pipe penetrates through the box body. An outlet valve is fixedly connected to the outlet pipe, and an outlet quick connector is fixedly connected to the lower end of the outlet valve. A material basket is arranged at the lower left of the box body, and a plurality of sampling pipes matching the quick connectors are arranged inside the material basket. By docking the sampling pipes with the outlet quick connector, the influence of air on the natural ester can be reduced. An evacuation system is arranged between the inlet pipe and the outlet pipe, and the evacuation system can discharge all the natural ester insulating oil inside the sealed tank.

[0007] The evacuation system includes an evacuation pipe. The upper end of the evacuation pipe is connected to the inlet pipe, and the connection at the upper end of the evacuation pipe is located between the inlet valve and the pressure gauge. The lower end of the evacuation pipe penetrates the box body. An evacuation quick connector is fixedly installed at the end of the evacuation pipe, and an evacuation valve is fixedly installed on the evacuation quick connector. A connecting pipe is connected between the evacuation pipe and the outlet pipe. The connecting pipe is located above the outlet valve and the evacuation valve, and a connecting valve is fixedly installed on the connecting pipe.

[0008] A fixing seat matching the sealed tank is fixedly installed inside the box body, and a pressing block cooperating with the sealed tank is installed at the front end of the fixing seat in a matching manner.

[0009] Gasket pads are fixedly installed inside both the fixing seat and the pressing block, and the gasket pads can increase the friction force with the sealed tank.

[0010] Holes matching the inlet valve and the pressure gauge are provided at the top of the box body, which facilitates opening the inlet valve and observing the value in the pressure gauge.

[0011] A liquid level gauge is provided on the sealed tank, which facilitates observing the amount of natural ester insulating oil inside the sealed tank. Description of the Drawings

[0012] The present utility model can be further illustrated by the non-limiting embodiments given in the drawings.

[0013] Figure 1 is a schematic structural view of a natural ester insulating oil closed sampling device of the present utility model Figure 1 ;

[0014] Figure 2 is a schematic structural view of a natural ester insulating oil closed sampling device of the present utility model Figure 2 ;

[0015] Figure 3 is a schematic structural view of the fixing seat and the pressing block of the present utility model.

[0016] The main element symbols are explained as follows:

[0017] Box body 100, sealed tank 101, inlet pipe 102, inlet quick connector 103, inlet valve 104, pressure gauge 105, outlet pipe 106, outlet valve 107, outlet quick connector 108, sample basket 109, sampling pipe 110, evacuation pipe 200, evacuation quick connector 201, evacuation valve 202, connecting pipe 203, connecting valve 204, fixing seat 300, pressing block 301, gasket pad 302, hole 303, liquid level gauge 304. Detailed Description of the Embodiment

[0018] 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 accompanying drawings and embodiments.

[0019] Embodiment 1:

[0020] As Figures 1 - 3 shown, a closed sampling device for natural ester insulating oil includes a box body 100. Inside the box body 100, there is a sealed tank 101 for storing natural ester insulating oil. The upper end of the sealed tank 101 is connected to an inlet pipe 102. The upper end of the inlet pipe 102 penetrates through the top of the box body 100. At the top end of the inlet pipe 102, an inlet quick connector 103 is fixedly installed. The inlet quick connector 103 facilitates quick docking and shortens the docking time. Below the inlet quick connector 103, an inlet valve 104 and a pressure gauge 105 are fixedly connected in sequence. The inlet valve 104 is used to adjust the inlet flow rate, and the pressure gauge 105 is used to observe the internal pressure of the sealed tank. The lower end of the sealed tank 101 is connected to an outlet pipe 106. The outlet pipe 106 penetrates through the box body 100. An outlet valve 107 is fixedly connected to the outlet pipe 106. At the lower end of the outlet valve 107, an outlet quick connector 108 is fixedly connected. At the lower left of the box body 100, there is a sample basket 109. Inside the sample basket, there are several sampling pipes 110 that match the quick connector 108. By directly docking the sampling pipes 110 with the outlet quick connector 108, it is convenient for sampling and can also reduce the influence of air on the natural ester insulating oil. Between the inlet pipe 102 and the outlet pipe 106, there is an evacuation system that can evacuate all the natural ester insulating oil inside the sealed tank 101.

[0021] The evacuation system includes an evacuation pipe 200. The upper end of the evacuation pipe 200 is connected to the inlet pipe 102, and the connection at the upper end of the evacuation pipe 200 is located between the inlet valve 104 and the pressure gauge 105. The lower end of the evacuation pipe 200 penetrates through the box body 100. At the end of the evacuation pipe 200, an evacuation quick connector 201 is fixedly installed. An evacuation valve 202 is fixedly installed on the evacuation quick connector 201. A connecting pipe 203 is connected between the evacuation pipe 200 and the outlet pipe 106. The connecting pipe 203 is located above the outlet valve 107 and the evacuation valve 202. A connecting valve 204 is fixedly installed on the connecting pipe 203.

[0022] Inside the box body 100, a fixing seat 300 that matches the sealed tank 101 is fixedly installed. At the front end of the fixing seat 300, a pressing block 301 that cooperates with the sealed tank 101 is fitted.

[0023] Inside both the fixing seat 300 and the pressing block 301, rubber pads 302 are fixedly installed. The rubber pads 302 can increase the friction between the fixing seat 300 and the pressing block 301 and the sealed tank 101.

[0024] At the top of the box body 100, there is a hole 303 that matches the inlet valve 104 and the pressure gauge 105, which is convenient for checking the value of the pressure gauge 105 and opening and closing the inlet valve 104.

[0025] On the sealed tank 101, there is a liquid level gauge 304, which is convenient for observing the liquid level of the natural ester insulating oil inside the sealed tank 101.

[0026] In this embodiment, the box body 100 serves as the main body of the entire device. The sealed tank 101 is used to store natural ester insulating oil. The inlet quick interface 103 facilitates quick docking and shortens the docking time. The inlet valve 104 is used to control the flow rate. The pressure gauge 105 is used to monitor the internal pressure of the sealed tank 101. It is directly docked with the outlet quick interface 108 through the sampling pipe 110, which is convenient for sampling and can also reduce the influence of air on the natural ester insulating oil.

[0027] Working principle: First, in the storage state, the external pipeline is directly connected to the inlet quick interface 103. Then, by opening the inlet valve 104, the natural ester insulating oil can be stored inside the sealed tank 101. When observing the height of the liquid level gauge 304 to a certain level, the input of the natural ester insulating oil can be stopped. In the sampling state, take out the sampling pipe 110 and dock it with the outlet quick interface, and then open the outlet valve to achieve the sampling of the natural ester insulating oil. In the emptying state, open the emptying valve 202 and the connecting valve 204 simultaneously to achieve the emptying function.

[0028] 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 closed sampling device for natural ester insulating oil, comprising a box, characterized in that: A sealed tank is provided in the box body, the upper end of the sealed tank is connected to an inlet pipe, the upper end of the inlet pipe passes through the top of the box body, an inlet quick interface is fixedly installed on the top of the inlet pipe, an inlet valve and a pressure gauge are fixedly connected to the bottom of the inlet quick interface in sequence, the lower end of the sealed tank is connected to an outlet pipe, the outlet pipe passes through the box body, the outlet pipe is fixedly connected to an outlet valve, the lower end of the outlet valve is fixedly connected to an outlet quick interface, a presentation basket is provided at the lower left side of the box body, a number of sampling tubes matching the quick interface are provided inside the presentation basket, and an emptying system is provided between the inlet pipe and the outlet pipe.

2. A closed sampling device for natural ester insulating oil according to claim 1, characterized in that: The emptying system includes an emptying pipe, the upper end of the emptying pipe is connected to the inlet pipe, and the upper end connection of the emptying pipe is located between the inlet valve and the pressure gauge, the lower end of the emptying pipe passes through the box, the end of the emptying pipe is fixedly equipped with an emptying quick interface, the emptying quick interface is fixedly equipped with an emptying valve, a connecting pipe is connected between the emptying pipe and the outlet pipe, the connecting pipe is located between the outlet valve and the upper end of the emptying valve, and a connecting valve is fixedly equipped on the connecting pipe.

3. A closed sampling device for natural ester insulating oil according to claim 1, characterized in that: A fixing seat matching the sealing can is fixedly installed inside the box body, and a pressing block matching the sealing can is matched and installed at the front end of the fixing seat.

4. A closed sampling device for natural ester insulating oil according to claim 3, characterized in that: Rubber pads are fixedly installed inside the fixing seat and the pressing block.

5. A closed sampling device for natural ester insulating oil according to claim 1, characterized in that: The top of the box body is provided with a hole matching the inlet valve and the pressure gauge.

6. A closed sampling device for natural ester insulating oil according to claim 1, characterized in that: The sealed tank is provided with a liquid level meter.

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