CN209640304U - A kind of automatic feeding system - Google Patents

Abstract

The utility model relates to technical field of electrical equipment there is technical issues that frequently to replace more particularly, to a kind of automatic feeding system to alleviate power main transformer oil chromatography on-Line Monitor Device.The system includes the gas and oil separating plant being sequentially connected in series along airintake direction, arrangement for catalytic purification, gas storage device and oil chromatography on-line equipment；Gas and oil separating plant is used to remove the oil impurities in ambient atmos；Arrangement for catalytic purification is used to remove the hydrocarbon impurities in ambient atmos；Gas storage device is connected to oil chromatography on-line equipment, and gas storage device is for storing carrier gas and providing carrier gas to oil chromatography on-line equipment.The utility model reduces cost of material, it avoids and cumbersome applies to purchase formality, the process for eliminating frequently replacement carrier gas bottle, it is time saving and energy saving, the hidden danger such as leakage, flow velocity caused by carrier gas be unstable can also be avoided frequently replacing, in addition, the utility model can also realize the continuous on-line monitoring of oil chromatography on-line equipment.

Description

An automatic air supply system

technical field

The utility model relates to the technical field of electrical equipment, in particular to an automatic air supply system.

Background technique

In recent years, local power supply bureaus have invested a large number of online transformer oil chromatographic monitoring devices. Through real-time continuous operation status monitoring data, latent faults of transformers can be detected in time, and major accidents in power systems can be effectively avoided. The existing transformer online oil chromatographic monitoring device uses the principle of gas chromatography, and needs to be detected after separation of different fault components under the action of carrier gas, so as to analyze and quantify. The carrier gas is an important part of the oil chromatography on-line monitoring device, and the bottled gas needs to be replaced from time to time.

Carrier gas is an important part of the online monitoring device for oil chromatography. Currently, the following problems exist in daily maintenance when using bottled gas:

1. The bottled gas consumption is fast, the replacement frequency is high, and the total replacement amount in a year is huge.

2. Each station is widely distributed. Once the device does not replace the carrier gas in time, the oil chromatography system will stop operating and lose the function of continuous online monitoring.

3. The entire carrier gas circuit requires pure carrier gas, good airtightness, stable flow rate and accurate flow rate measurement. Frequent replacement of carrier gas may lead to hidden dangers such as leakage and unstable flow rate caused by improper operation, which will affect the accuracy of data analysis results.

4. Bottled gas is expensive, and the purchase procedures are cumbersome and time-consuming.

Utility model content

The purpose of the utility model is to provide an automatic gas supply system to alleviate the technical problem of frequent replacement of carrier gas cylinders in the prior art.

For realizing the purpose of this utility model, adopt following technical scheme:

In the first aspect, the embodiment of the utility model provides an automatic gas supply system, including an oil-gas separation device, a catalytic purification device, a gas storage device, and an online oil chromatography device connected in series along the air intake direction; the oil-gas separation device is used for remove the oil impurities in the external gas; the catalytic purification device is used to remove the hydrocarbon impurities in the external gas; the gas storage device communicates with the oil chromatography online device, and the gas storage device is used to store the Gas and provide the carrier gas to the oil chromatography on-line device.

In combination with the first aspect, the embodiment of the present utility model provides a first possible implementation manner of the first aspect, wherein a heater is provided inside the catalytic purification device, and the heater is capable of heating the interior of the catalytic purification device. gas so that the gas reaches the temperature required for the catalytic reaction.

In combination with the first aspect and its first possible implementation manner, the embodiment of the present utility model provides a second possible implementation manner of the first aspect, wherein a heat preservation element is further provided inside the catalytic purification device.

In combination with the first aspect and its second possible implementation, the embodiment of the present utility model provides a third possible implementation of the first aspect, wherein, a fan is provided inside the catalytic purification device, and the fan uses To reduce the temperature of the gas after catalytic purification.

In combination with the first aspect, the embodiment of the present utility model provides a fourth possible implementation manner of the first aspect, wherein the automatic gas supply system further includes an adsorption purification device, and the adsorption purification device is arranged on the catalytic purification device. An adsorption layer is provided between the device and the gas storage device and inside, and the adsorption layer can absorb carbon dioxide and water in the gas discharged from the catalytic purification device.

In combination with the first aspect and its fourth possible implementation, the embodiment of the present utility model provides a fifth possible implementation of the first aspect, wherein the adsorption purification device is provided with a vent valve, and the vent valve The connection between the adsorption purification device and the outside world can be controlled.

In combination with the first aspect, the embodiment of the present utility model provides a sixth possible implementation manner of the first aspect, wherein the automatic air supply system further includes a cooling and drying device, and the cooling and drying device is arranged on the oil-gas separation Between the device and the catalytic purification device, it is used to cool and dry the gas discharged from the oil-gas separation device.

In combination with the first aspect, the embodiment of the present utility model provides a seventh possible implementation manner of the first aspect, wherein the automatic air supply system further includes an air compressor communicated with the air inlet of the oil-gas separation device , the air compressor can collect and pressurize the external air, so that a pressure difference is formed between the air compressor, the oil-gas separation device and the catalytic purification device.

In combination with the first aspect and its seventh possible implementation, the embodiment of the present utility model provides an eighth possible implementation of the first aspect, the automatic gas supply system further includes a control device, and the control device includes A pressure sensor and a switch; the pressure sensor is installed in the gas storage device and connected to the switch signal, and the pressure sensor is used to detect the pressure in the gas storage device; the switch is connected to the air pressure Electromechanical connection, the switch can control the opening and closing of the air compressor according to the signal of the pressure sensor.

In combination with the first aspect, the embodiment of the present utility model provides a ninth possible implementation manner of the first aspect. A flow control valve is provided at the outlet of the gas storage device, and the flow control valve is used to adjust the gas storage Carrier gas flow between the device and the oil chromatography on-line device.

In combination with the above technical solutions, the beneficial effects achieved by the utility model are:

An automatic gas supply system includes an oil-gas separation device, a catalytic purification device, a gas storage device and an online oil chromatography device connected in series along the air intake direction; the oil-gas separation device is used to remove oil impurities in the external gas; the catalytic purification device is used to The hydrocarbon impurities in the external gas are removed; the gas storage device communicates with the oil chromatography on-line device, and the gas storage device is used to store the carrier gas and provide the carrier gas to the oil chromatography on-line device.

The oil-gas separation device and the catalytic purification device can respectively remove oil impurities and hydrocarbon impurities in the external gas, and purify the external gas to obtain the carrier gas required by the oil chromatography on-line device, without having to buy bottled carrier gas, which reduces the cost of raw materials , avoiding cumbersome purchase procedures, saving time and human resources. At the same time, the carrier gas purified by the oil-gas separation device and the catalytic purification device can be stored in the gas storage device, and the gas storage device provides the carrier gas for the oil chromatography on-line device, which can save the frequent replacement of the carrier gas bottle, saving time and effort. It can also avoid hidden dangers such as leakage and unstable flow rate caused by frequent replacement of carrier gas. In addition, the utility model can realize continuous on-line monitoring of the oil chromatography on-line device.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is a schematic diagram of the connection of the automatic air supply system provided by the embodiment of the present invention.

Icons: 100-oil-gas separation device; 200-catalytic purification device; 300-gas storage device; 400-adsorption purification device; 500-cooling and drying device; 600-air compressor; 700-control device; 210-heater; 220- Insulation element; 230-fan; 310-flow control valve; 320-second drain valve; 410-vent valve; 510-first drain valve; 710-pressure sensor.

Detailed ways

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The central idea of this utility model is to provide an automatic gas supply system, which can purify the external gas such as fresh air to obtain the required carrier gas, and store the carrier gas in a device connected to the oil chromatography online device, so that it can be used at any time The oil chromatography on-line device provides carrier gas, thereby avoiding the problem of frequent replacement of carrier gas cylinders and realizing continuous operation of the oil chromatography on-line device.

Embodiment 1 will be described in detail below in conjunction with the accompanying drawings.

Example 1

Carrier gas is an important part of the online monitoring device for oil chromatography. Currently, the following problems exist in daily maintenance when using bottled gas:

1. The bottled gas consumption is fast, the replacement frequency is high, and the total replacement amount in a year is huge.

2. Each station is widely distributed. Once the device does not replace the carrier gas in time, the oil chromatography system will stop operating and lose the function of continuous online monitoring.

3. The entire carrier gas circuit requires pure carrier gas, good airtightness, stable flow rate and accurate flow rate measurement. Frequent replacement of carrier gas may lead to hidden dangers such as leakage and unstable flow rate caused by improper operation, which will affect the accuracy of data analysis results.

4. Bottled gas is expensive, and the purchase procedures are cumbersome and time-consuming.

In contrast, this embodiment provides an automatic air supply system, please refer to FIG. 1 together. Fig. 1 is a schematic diagram of the connection of the automatic air supply system provided by the embodiment of the present invention.

The automatic gas supply system includes an oil-gas separation device 100, a catalytic purification device 200, a gas storage device 300 and an online oil chromatography device connected in series along the air intake direction; the oil-gas separation device 100 is used to remove oil impurities in the external gas; the catalytic purification device 200 is used to remove hydrocarbon impurities in the external gas; the gas storage device 300 is in communication with the oil chromatography on-line device, and the gas storage device 300 is used to store carrier gas and provide carrier gas to the oil chromatography on-line device.

The oil-gas separation device 100 and the catalytic purification device 200 can respectively remove oil impurities and hydrocarbon impurities in the external gas, and purify the external gas to obtain the carrier gas required by the oil chromatography online device without having to purchase bottled carrier gas, reducing the The cost of raw materials avoids cumbersome purchase procedures and saves time and human resources. At the same time, the carrier gas purified by the oil-gas separation device 100 and the catalytic purification device 200 can be stored in the gas storage device 300, and the gas storage device 300 provides the carrier gas for the oil chromatography online device, which can save the frequent replacement of the carrier gas bottle. It saves time and labor, and can also avoid hidden dangers such as leakage and unstable flow rate caused by frequent replacement of carrier gas. In addition, this embodiment can realize continuous on-line monitoring of the oil chromatography on-line device.

Wherein, the oil-gas separation device 100 includes a polymer membrane arranged along the direction of gas flow. The polymer membrane can hinder the passage of substances with larger particle sizes in the air, and the oil substances in the air cannot pass through the polymer membrane, so they are separated. The polymer membrane can also filter out water and dust in the air to achieve the purpose of purifying the gas.

The catalytic purification device 200 is provided with a heater 210 inside, and the heater 210 can heat the gas inside the catalytic purification device 200 so that the gas reaches the temperature required for the catalytic reaction. The heater 210 can be heated by electricity, for example, the heater 210 is set as a heating wire, and the heating wire can convert electric energy into heat energy after being energized. This method is convenient to control, can realize instant stop, and is energy-saving and environment-friendly. The heater 210 can also be heated by the flow medium. For example, the heater 210 is set as a heating coil, and the inside of the heating coil has a space for the flow medium to pass through. By heating the flow medium and the flow medium and the gas in the catalytic purification device 200 The heat transfer realizes heating. This method can realize the recycling of the flow medium, save raw materials and reduce the cost. The heater 210 can be arranged at the entrance of the catalytic purification device 200, and can also be arranged at the center of the catalytic purification device 200, so as to heat the gas in the largest range and the fastest.

At the same time, the catalytic purification device 200 is also provided with a thermal insulation element 220 . The heat preservation element 220 is used to maintain the temperature inside the catalytic purification device 200 so as to keep the catalytic reaction going on and improve the purification efficiency. The thermal insulation element 220 can be configured as thermal insulation cotton, and the thermal insulation cotton covers the inner wall of the catalytic purification device 200 or fills the chamber of the catalytic purification device 200 . The heat preservation element 220 can also be set as a vacuum heat insulation layer. Specifically, the catalytic purification device 200 includes an inner shell and an outer shell, and vacuum is drawn between the inner shell and the outer shell to form a vacuum heat insulation layer. There is very little gas in the heat insulation layer, and the gas in the inner casing cannot perform heat exchange with the vacuum heat insulation layer, or the heat exchange speed is extremely slow. The effect of this insulation method is remarkable.

In addition, a fan 230 is provided inside the catalytic purification device 200, and the fan 230 is used to reduce the temperature of the gas after catalytic purification. The preferred arrangement of the fan 230 and the heater 210 is: the heater 210 is arranged at the entrance of the catalytic purification device 200, the fan 230 is arranged at the outlet of the catalytic purification device 200, and the entrance and the outlet of the catalytic purification device 200 are relatively arranged. The fan 230 can reduce the temperature of the catalytically purified gas.

The gas after the oil and gas separation is catalytically reacted in the catalytic purification device 200 to remove hydrocarbon impurities in the gas. After the catalytic reaction of the hydrocarbon impurities in the gas, water and carbon dioxide will be generated. An adsorption purification device 400 is arranged between them, and an adsorption layer is arranged inside the adsorption purification device 400 , and the adsorption layer can adsorb carbon dioxide and water in the gas discharged from the catalytic purification device 200 . A plurality of adsorption layers are arranged in sequence along the direction of gas flow. After the gas enters from the inlet of the adsorption purification device 400 , it can pass through each adsorption layer in turn, flow to the gas outlet of the adsorption purification device 400 , and then flow out of the adsorption purification device 400 . Multiple adsorption layers can be arranged sequentially along the normal direction of the plane where the air outlet is located, and each adsorption layer is parallel to the plane where the air outlet is located to increase the adsorption area and reduce the occupied space of the adsorption layer. The adsorption layer can be made of absorbent cotton, and the surface of the absorbent cotton is mixed with a variety of adsorbent materials to achieve the adsorption of water, carbon dioxide and other impurities in the gas, so as to provide pure carrier gas for the oil chromatography on-line device and ensure the normal operation of the oil chromatography on-line device .

With the increase of substances adsorbed by the adsorption material in the adsorption purification device 400, the adsorption capacity of the adsorption material gradually decreases. In order to realize the repeated use of the adsorption material, it is necessary to purify the adsorption material in time. In this embodiment, a pressure relief hole is provided on the housing of the adsorption purification device 400, and a vent valve 410 is installed at the pressure relief hole. The vent valve 410 can control the connection between the adsorption purification device 400 and the outside world, and the water in the adsorption material Substances such as carbon dioxide and carbon dioxide can be discharged to the outside through the vent valve 410, so as to realize the reuse of the adsorption material.

In the optional solution of this embodiment, more preferably, the automatic gas supply system also includes a cold drying device 500 arranged between the oil-gas separation device 100 and the catalytic purification device 200, and the cold-drying device 500 is used for cooling and drying The gas exhausted by the device 100. Specifically, the cold-drying device 500 has a drying coil inside, and inside the drying coil is a cooling medium, and the gas and the cooling medium conduct heat transfer to reduce its own temperature. The cooling and drying device 500 is also provided with a drainage hole, and a first drainage valve 510 is installed at the drainage hole. The gas discharged from the oil-gas separation device 100 is cooled and dried, and the water is discharged to the outside through the first drainage valve 510 .

In the optional solution of this embodiment, preferably, the automatic air supply system further includes an air compressor 600 communicated with the air inlet of the oil-gas separation device 100, and the air compressor 600 can collect and pressurize the outside air so that the air A pressure difference is formed between the compressor 600, the oil-gas separation device 100 and the catalytic purification device 200, and the gas can flow through the air compressor 600, the oil-gas separation device 100, the cold-drying device 500, and the catalytic purification device 200 in sequence under the action of the pressure difference And the adsorption purification device 400, and finally stored in the gas storage device 300.

In the optional solution of this embodiment, more preferably, in order to improve the degree of automation of the automatic gas supply system, a control device 700 for controlling the automatic opening and closing of each device is provided. The control device 700 includes a pressure sensor 710 and a switch; the pressure sensor 710 is installed in the gas storage device 300 and is connected to the switch signal. The pressure sensor 710 is used to detect the pressure in the gas storage device 300; the switch is electrically connected to the air compressor 600, and the controller can receive the signal of the pressure sensor 710 and control The switch further controls the opening and closing of the air compressor 600 . When the pressure sensor 710 detects that the pressure in the gas storage device 300 is lower than the set value, it transmits a signal to the controller, and the controller opens the control switch after receiving the signal, so that the air compressor 600 and the entire automatic gas supply system start Working provides the gas storage device 300 with a carrier gas.

In an alternative solution of this embodiment, preferably, a flow control valve 310 is provided at the outlet of the gas storage device 300, and the flow control valve 310 is used to adjust the flow rate of the carrier gas between the gas storage device 300 and the online oil chromatography device. The flow control valve 310 can be an electronic flow control valve. The gas storage device 300 is also provided with a second drain valve 320 , and the moisture in the gas storage device 300 is discharged to the outside through the second drain valve 320 . The gas storage device 300 may be configured as a storage tank.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention Scope of technical solutions.

Claims (10)

1. An automatic gas supply system, characterized in that, comprises an oil-gas separation device, a catalytic purification device, a gas storage device and an oil chromatographic on-line device connected in series successively along the air intake direction; The oil-gas separation device is used to remove oil impurities in the external air; The catalytic purification device is used to remove hydrocarbon impurities in the external gas; The gas storage device communicates with the oil chromatography on-line device, and the gas storage device is used to store carrier gas and provide the carrier gas to the oil chromatography on-line device. 2. The automatic gas supply system according to claim 1, wherein a heater is provided inside the catalytic purification device, and the heater can heat the gas inside the catalytic purification device so that the gas reaches The temperature required for the catalytic reaction. 3. The automatic air supply system according to claim 2, characterized in that, a thermal insulation element is also provided inside the catalytic purification device. 4. The automatic gas supply system according to claim 3, wherein a fan is provided inside the catalytic purification device, and the fan is used to reduce the temperature of the gas after catalytic purification. 5. The automatic gas supply system according to claim 1, characterized in that, the automatic gas supply system further comprises an adsorption purification device, and the adsorption purification device is arranged between the catalytic purification device and the gas storage device , and an adsorption layer is arranged inside, and the adsorption layer can absorb carbon dioxide and water in the gas discharged from the catalytic purification device. 6 . The automatic gas supply system according to claim 5 , wherein a vent valve is provided on the adsorption purification device, and the vent valve can control the connection between the adsorption purification device and the outside world. 7 . 7. The automatic air supply system according to claim 1, characterized in that, the automatic air supply system also includes a cold drying device, and the cold drying device is arranged between the oil-gas separation device and the catalytic purification device , used to cool and dry the gas discharged from the oil-gas separation device. 8. The automatic air supply system according to claim 1, characterized in that, the automatic air supply system also includes an air compressor communicated with the air inlet of the oil-gas separation device, the air compressor can collect and The external air is pressurized so that a pressure difference is formed between the air compressor, the oil-gas separation device and the catalytic purification device. 9. The automatic gas supply system according to claim 8, characterized in that, the automatic gas supply system further comprises a control device, and the control device comprises a pressure sensor and a switch; The pressure sensor is installed in the gas storage device and connected to the switch signal, and the pressure sensor is used to detect the pressure in the gas storage device; The switch is electrically connected with the air compressor, and the switch can control the opening and closing of the air compressor according to the signal of the pressure sensor. 10. The automatic gas supply system according to claim 1, wherein a flow control valve is provided at the outlet of the gas storage device, and the flow control valve is used to adjust the gas storage device and the oil chromatography. Carrier gas flow between in-line devices.