Porous injection negative pressure oil-gas separator and oil-gas separation method

Abstract

The invention relates to a porous injection negative pressure oil-gas separator and an oil-gas separator method. The oil-gas separator comprises an oil-gas separation chamber, a vacuum pump, an oil return port and a spray head; the oil-gas separation chamber is a sealed cavity, the vacuum pump is connected with the oil-gas separation chamber and used for extracting gas from the oil-gas separation chamber, and negative pressure is formed in the oil-gas separation chamber; the oil return opening and the spray head are both located in the oil-gas separation chamber, and the oil return opening is communicated with the spray head through a pipeline and used for spraying transformer oil in the oil-gas separation chamber and conducting oil-gas separation on the transformer oil. By adopting the method, the degassing efficiency of the transformer oil can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of oil chromatography detection, and in particular to a multi-hole jet negative pressure oil-gas separator and an oil-gas separation method. Background Art

[0002] Transformers are electric energy conversion devices in power plants, power transmission and transformation networks, substations, and internal power transmission and transformation systems of enterprises. They are important electrical equipment. Their condition directly affects the safe operation of the power grid. Therefore, it is necessary to monitor the operating status of the transformer online, understand the operating status of the transformer in a timely manner, prevent transformer failures, and ensure the safe operation of the power system.

[0003] At present, the main means of monitoring the operating status of transformers is transformer oil chromatography online analysis. Through oil-gas separation, the gas dissolved in the transformer oil during transformer operation is obtained, the content of these gases is analyzed, and the operating status of the transformer is obtained based on the relationship between the gas and the transformer fault. Commonly used oil-gas separation methods include vacuum degassing, ultrasonic degassing, molecular sieve degassing, polymer breathable membrane method, etc. Among them, different vacuum degrees of vacuum degassing will cause inconsistent degassing rates, resulting in inaccurate chromatographic analysis results. Ultrasonic degassing can easily separate substances such as C3 that already exist in transformer oil, interfering with oil chromatography analysis. Molecular sieve degassing takes a long time to separate oil and gas, and molecular sieves are easily infected, affecting the accuracy of chromatographic analysis, and need to be replaced regularly. The polymer breathable membrane method takes a long time to separate oil and gas, and the breathable membrane needs to be replaced regularly.

[0004] Therefore, the current oil-gas separation technology has the problem of low degassing efficiency. Summary of the invention

[0005] Based on this, it is necessary to provide an oil-gas separator, method, device, computer equipment, computer-readable storage medium and computer program product that can improve degassing efficiency in response to the above technical problems.

[0006] In a first aspect, the present application provides an oil-gas separator, comprising: an oil-gas separation chamber, a vacuum pump, an oil return port, and a nozzle;

[0007] The oil-gas separation chamber is a sealed cavity, and the vacuum pump is connected to the oil-gas separation chamber to extract gas from the oil-gas separation chamber to form a negative pressure in the oil-gas separation chamber;

[0008] The oil return port and the spray head are both located inside the oil-gas separation chamber. The oil return port and the spray head are connected by a pipeline and are used to spray transformer oil inside the oil-gas separation chamber to separate the transformer oil from oil.

[0009] In one of the embodiments, the oil-gas separator further includes a nozzle support, an oil inlet and an oil outlet;

[0010] The top of the nozzle support is connected to the nozzle, and the bottom is connected to the oil return port;

[0011] The oil inlet and the oil outlet are both located at the bottom of the oil-gas separation chamber;

[0012] A three-way valve is arranged between the oil return port, the nozzle support, the oil inlet and the oil outlet, a circulation solenoid valve is arranged between the oil return port and the three-way valve, a check solenoid valve is arranged between the nozzle support and the three-way valve, and an oil pump and an oil outlet valve are arranged between the oil outlet and the three-way valve.

[0013] In one embodiment, the oil-gas separator further includes a gas sensor and an air outlet, wherein the gas sensor and the air outlet are both located at the top of the oil-gas separation chamber, and an air outlet solenoid valve is provided between the air outlet and the oil-gas separation chamber.

[0014] In one embodiment, the vacuum pump is located at the top of the oil-gas separation chamber, and is connected to the oil-gas separation chamber via a vacuum solenoid valve, and a filter is provided between the vacuum solenoid valve and the oil-gas separation chamber.

[0015] In one embodiment, the oil-gas separator further includes at least one of a temperature sensor, a liquid level sensor and a pressure sensor.

[0016] In a second aspect, the present application also provides an oil-gas separation method, comprising:

[0017] Turning on the vacuum pump to extract gas from the oil-gas separation chamber;

[0018] injecting transformer oil into the oil-gas separation chamber;

[0019] The oil return port and the spray head are connected so that the transformer oil is transferred from the oil return port to the spray head and sprayed out by the spray head.

[0020] In one embodiment, injecting transformer oil into the oil-gas separation chamber comprises:

[0021] Controlling the three-way valve to connect the first channel between the oil inlet and the oil return port;

[0022] The circulation solenoid valve is opened to allow the transformer oil to enter the oil-gas separation chamber through the first channel.

[0023] In one embodiment, the connecting oil return port and the nozzle include:

[0024] Control the three-way valve to connect the second channel between the oil return port and the nozzle support;

[0025] The check solenoid valve is opened to allow the transformer oil to circulate through the second channel and enter the spray head.

[0026] In one embodiment, the method further comprises:

[0027] If the gas sensor detects that the gas in the oil-gas separation chamber meets the preset conditions, the gas outlet solenoid valve is opened to discharge the gas in the oil-gas separation chamber through the gas outlet.

[0028] In one embodiment, the method further comprises:

[0029] Control the three-way valve to connect the third channel between the oil return port, the nozzle support and the oil outlet;

[0030] The oil outlet valve is opened and the oil pump is started to discharge the transformer oil after oil and gas separation from the third channel.

[0031] In a third aspect, the present application also provides an oil-gas separation device, comprising:

[0032] An opening module is used to open the vacuum pump to extract gas from the oil-gas separation chamber;

[0033] An injection module, used for injecting transformer oil into the oil-gas separation chamber;

[0034] The connecting module is used to connect the oil return port and the nozzle, so that the transformer oil is transmitted from the oil return port to the nozzle and sprayed out by the nozzle.

[0035] In a fourth aspect, the present application further provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0036] Turning on the vacuum pump to extract gas from the oil-gas separation chamber;

[0037] injecting transformer oil into the oil-gas separation chamber;

[0038] The oil return port and the spray head are connected so that the transformer oil is transferred from the oil return port to the spray head and sprayed out by the spray head.

[0039] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0040] Turning on the vacuum pump to extract gas from the oil-gas separation chamber;

[0041] injecting transformer oil into the oil-gas separation chamber;

[0042] The oil return port and the spray head are connected so that the transformer oil is transferred from the oil return port to the spray head and sprayed out by the spray head.

[0043] In a sixth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0044] Turning on the vacuum pump to extract gas from the oil-gas separation chamber;

[0045] injecting transformer oil into the oil-gas separation chamber;

[0046] The oil return port and the spray head are connected so that the transformer oil is transferred from the oil return port to the spray head and sprayed out by the spray head.

[0047] The above-mentioned oil-gas separator, method, device, computer equipment, computer-readable storage medium and computer program product can use a vacuum pump to extract gas from the oil-gas separation chamber to create a negative pressure in the oil-gas separation chamber. Under the negative pressure environment, the transformer oil in the oil-gas separation chamber can be circulated and continuously transported from the oil outlet to the nozzle and sprayed out through the nozzle. Since the transformer oil sprayed from the nozzle is in full contact with the negative pressure environment, the degassing efficiency of the transformer oil can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0049] FIG1 is a schematic diagram of an oil-gas separator in one embodiment;

[0050] FIG2 is a schematic flow diagram of an oil-gas separation method in one embodiment;

[0051] Figure 3 A schematic flow chart of an oil-gas separation method in another embodiment;

[0052] FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment.

[0053] Explanation of the accompanying reference numerals: 101-oil-gas separation chamber; 102-liquid level sensor; 103-temperature sensor; 104-oil outlet valve; 105-oil pump; 106-oil outlet; 107-check solenoid valve; 108-oil return port; 109-nozzle support; 110-vacuum solenoid valve; 111-air outlet solenoid valve; 112-nozzle; 113-oil film sprayed from the nozzle; 114-gas sensor; 115-filter; 116-air outlet; 117-circulation solenoid valve; 118-three-way valve; 119-oil inlet; 120-vacuum pump; 121-pressure sensor. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0055] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does 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 cannot be understood as a limitation on the present application.

[0056] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0058] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0060] In an exemplary embodiment, as shown in FIG1 , an oil-gas separator is provided, comprising an oil-gas separation chamber 101 , a vacuum pump 120 , an oil return port 108 , and a nozzle 112 ;

[0061] The oil-gas separation chamber 101 is a sealed cavity, and the vacuum pump 120 is connected to the oil-gas separation chamber 101 to extract gas from the oil-gas separation chamber 101 and form a negative pressure in the oil-gas separation chamber 101;

[0062] The oil return port 108 and the spray head 112 are both located inside the oil-gas separation chamber 101 . The oil return port 108 and the spray head 112 are connected by a pipeline for spraying transformer oil inside the oil-gas separation chamber 101 to separate the transformer oil from the oil and gas.

[0063] The oil-gas separation chamber may be, but is not limited to, made of hard materials and have a certain degree of heat resistance. The vacuum pump may be, but is not limited to, various gas transmission pumps, gas capture pumps, etc. The nozzle may be a porous structure, including but not limited to a rotary shower structure, a water film fountain structure, a porous atomizing nozzle structure, etc.

[0064] Specifically, the oil-gas separation chamber may be a sealed cavity, and a vacuum pump is connected to the top of the oil-gas separation chamber. When in use, the vacuum pump is started to extract gas from the oil-gas separation chamber until the oil-gas separation chamber is vacuum, and a negative pressure environment is formed in the oil-gas separation chamber, and then transformer oil is injected into the oil-gas separation chamber. An oil return port and a nozzle may be provided inside the oil-gas separation chamber. The oil return port is located at the bottom of the oil-gas separation chamber and is connected to the nozzle through a pipeline. Since the oil-gas separation chamber is in a negative pressure environment, under the action of pressure, gravity, shear force, etc., the transformer oil can be circulated and continuously transmitted from the oil return port to the nozzle, and sprayed out by the nozzle, so that the transformer oil is fully in contact with the negative pressure environment, and the gas is separated from the transformer oil.

[0065] The above-mentioned oil-gas separator can utilize a vacuum pump to extract gas from the oil-gas separation chamber to create negative pressure in the oil-gas separation chamber. Under the negative pressure environment, the transformer oil in the oil-gas separation chamber can be circulated and continuously transported from the oil return port to the nozzle and sprayed out through the nozzle. Since the transformer oil sprayed from the nozzle is in full contact with the negative pressure environment, the degassing efficiency of the transformer oil can be improved.

[0066] In an exemplary embodiment, the oil-gas separator also includes a nozzle support 109, an oil inlet 119 and an oil outlet 106; the top of the nozzle support 109 is connected to the nozzle 112, and the bottom is connected to the oil return port 108; the oil inlet 119 and the oil outlet 106 are both located at the bottom of the oil-gas separation chamber 101; a three-way valve 118 is arranged between the oil return port 108, the nozzle support 109, the oil inlet 119 and the oil outlet 106, a circulation solenoid valve 117 is arranged between the oil return port 108 and the three-way valve 118, a check solenoid valve 107 is arranged between the nozzle support 109 and the three-way valve 118, and an oil pump 105 and an oil outlet valve 104 are arranged between the oil outlet 106 and the three-way valve 118.

[0067] The nozzle support may be, but is not limited to, a tubular structure. The circulation solenoid valve may be a solenoid valve for controlling the flow direction of the liquid. The check solenoid valve may be a solenoid valve for preventing the transformer oil from flowing back from the nozzle support. The oil outlet valve may be a valve for controlling the outflow of the transformer oil. The oil pump may be a pump body for providing power for the outflow of the transformer oil.

[0068] Specifically, a nozzle support can be arranged inside the oil-gas separation chamber. In order to allow the sprayed transformer oil to fully contact the negative pressure environment, the nozzle support can be placed vertically, and a nozzle can be connected to the top of the nozzle support. By spraying the transformer oil through the nozzle, the transformer oil can be sprayed upward, and then fully contact the negative pressure environment in the oil-gas separation chamber. The bottom of the nozzle support can be connected to the oil return port. Under the action of pressure, gravity, shear force, etc., the sprayed transformer oil can return to the nozzle support through the oil return port again, and be sprayed again in the oil-gas separation chamber through the nozzle at the top of the nozzle support. In this way, the transformer oil can be circulated and sprayed continuously in the oil-gas separation chamber, so that the transformer oil is fully degassed.

[0069] The bottom of the oil-gas separation chamber may be funnel-shaped and provided with an oil inlet and an oil outlet. A three-way valve is provided between the oil return port, the nozzle support, the oil inlet and the oil outlet, a circulation solenoid valve is provided between the oil return port and the three-way valve, a non-return solenoid valve is provided between the nozzle support and the three-way valve, and an oil pump and an oil outlet valve are provided between the oil outlet and the three-way valve.

[0070] When transformer oil needs to be injected, the three-way valve is connected to the oil inlet and the oil return port, and the circulation solenoid valve is opened to allow the transformer oil to enter the oil return port through the oil inlet, and then enter the oil-gas separation chamber through the oil return port. After that, the three-way valve is used to close the passage between the oil inlet and the oil return port to complete the injection of transformer oil.

[0071] After the transformer oil is injected, the transformer oil can be degassed, the three-way valve is connected to the oil return port and the nozzle support, and the check solenoid valve and the circulation solenoid valve are opened (if the circulation solenoid valve is not closed after the transformer oil is injected, there is no need to open the circulation solenoid valve). The transformer oil can be circulated continuously from the oil return port through the nozzle support into the nozzle and sprayed out through the nozzle. In this process, the gas dissolved in the transformer oil diffuses to the surroundings and separates from the transformer oil.

[0072] After degassing is completed, the gas in the oil-gas separation chamber can be discharged, and then the degassed transformer oil can be discharged, so that the three-way valve connects the channels between the oil return port, the nozzle support, and the oil outlet, and the oil outlet valve, the check solenoid valve and the circulation solenoid valve are opened (if the check solenoid valve and the circulation solenoid valve are not closed after degassing, there is no need to open the check solenoid valve and the circulation solenoid valve), start the oil pump, so that the transformer oil in the oil-gas separation chamber, the nozzle support and the oil return port pipeline is pumped away, and the discharge of the degassed transformer oil is completed.

[0073] The oil-gas separator can fully degas the transformer oil by circulating and continuously spraying the transformer oil, and also uses a three-way valve to control the degassing process to improve the degassing efficiency.

[0074] In an exemplary embodiment, the oil-gas separator further includes a gas sensor 114 and an air outlet 116 , both of which are located at the top of the oil-gas separation chamber 101 , and an air outlet solenoid valve 111 is provided between the air outlet 116 and the oil-gas separation chamber 101 .

[0075] The gas sensor may be a sensor that senses information such as the composition, concentration, and pressure of the gas. The gas outlet solenoid valve may be a solenoid valve that controls the discharge of gas.

[0076] Specifically, a gas sensor and an air outlet may be arranged on the top of the oil-gas separation chamber, and the air outlet is connected to the oil-gas separation chamber through an air outlet solenoid valve. When in use, the gas sensor may send an opening signal to the air outlet solenoid valve when it detects that the pressure of the gas in the oil-gas separation chamber exceeds a preset pressure, or the pressure does not change, or the component contains a preset component, or the concentration exceeds a preset concentration, or the concentration does not change. The air outlet solenoid valve may open upon receiving the opening signal, so that the gas in the oil-gas separation chamber is discharged from the air outlet.

[0077] The oil-gas separator controls the gas discharge in the oil-gas separation chamber through the gas sensor and the gas outlet solenoid valve, and can separate the separated gas from the remaining transformer oil after the transformer oil is degassed.

[0078] In an exemplary embodiment, the vacuum pump 120 is located at the top of the oil-gas separation chamber 101 , and is connected to the oil-gas separation chamber 101 through the vacuum solenoid valve 110 . A filter 115 is disposed between the vacuum solenoid valve 110 and the oil-gas separation chamber 101 .

[0079] The vacuum solenoid valve may be a solenoid valve for controlling the gas in the oil-gas separation chamber to enter the vacuum pump. The filter may be, but is not limited to, various gas filters.

[0080] Specifically, a vacuum pump can be arranged on the top of the oil-gas separation chamber, and the vacuum pump is connected to the oil-gas separation chamber through a vacuum solenoid valve. In order to filter out impurities in the extracted gas, a filter can also be installed at the front end of the vacuum solenoid valve.

[0081] It is understandable that in practical applications, hydraulic valves, piston pumping devices, etc. can be used instead of vacuum pumps.

[0082] The oil-gas separator can create a negative pressure environment in the oil-gas separation chamber, realize the continuous circulation of transformer oil between the oil outlet and the nozzle, and improve the degassing efficiency.

[0083] In an exemplary embodiment, the oil-gas separator further includes at least one of a temperature sensor 103 , a liquid level sensor 102 , and a pressure sensor 121 .

[0084] The temperature sensor may be a sensor for sensing the temperature of the oil-gas separation chamber. The liquid level sensor may be a sensor for sensing the amount of transformer oil in the oil-gas separation chamber. The pressure sensor may be a sensor for sensing the gas pressure in the oil-gas separation chamber.

[0085] Specifically, a temperature sensor can be installed inside or on the outer wall of the oil-gas separation chamber to monitor the temperature of the oil-gas separation chamber in real time, and adjust the temperature to ensure that the temperature of the oil-gas separation chamber is constant at 65°C. A liquid level sensor can also be installed inside the oil-gas separation chamber, and the height of the liquid level sensor can be adjusted. During the process of injecting transformer oil, the oil volume can be monitored in real time, and when the oil volume reaches the preset oil volume, an instruction is given to close the passage between the oil inlet and the oil outlet. A pressure sensor can also be installed inside the oil-gas separation chamber, and when the vacuum pump extracts the gas in the oil-gas separation chamber, the gas pressure in the oil-gas separation chamber can be monitored in real time, and when the gas pressure is lower than the preset pressure (for example, lower than one standard atmospheric pressure), an instruction is given to close the vacuum solenoid valve or the vacuum pump to ensure that the oil-gas separation chamber is in a negative pressure state.

[0086] The above-mentioned oil-gas separator can ensure that the temperature, oil volume and gas pressure in the oil-gas separation chamber reach preset values, thereby ensuring reliable realization of oil-gas separation.

[0087] In an exemplary embodiment, as shown in FIG2 , a method for separating oil and gas based on the oil and gas separator is provided. This embodiment uses the method applied to a computer device as an example. It is understandable that the computer device may include a terminal or a server, or may be a system including a terminal and a server, and implemented through the interaction between the terminal and the server. The computer device may be connected to the oil and gas separator to control the vacuum pump, three-way valve, solenoid valve, etc. of the oil and gas separator. In this embodiment, the method includes the following steps:

[0088] Step S202, start the vacuum pump to extract gas from the oil-gas separation chamber;

[0089] Step S204, injecting transformer oil into the oil-gas separation chamber;

[0090] Step S206, connecting the oil return port and the nozzle, so that the transformer oil is transferred from the oil return port to the nozzle and sprayed out by the nozzle.

[0091] Specifically, the computer device can control the start of the vacuum pump to extract gas from the oil-gas separation chamber until the gas pressure in the oil-gas separation chamber is lower than a preset pressure (for example, lower than one standard atmospheric pressure), and then turn off the vacuum pump. The computer device can also control the injection of a certain amount of transformer oil into the oil-gas separation chamber, and control the three-way valve and the solenoid valve to connect the oil return port and the nozzle, so that the transformer oil in the oil-gas separation chamber can circulate continuously from the oil return port to the nozzle, and be sprayed out through the nozzle.

[0092] In this embodiment, by turning on the vacuum pump, gas is extracted from the oil-gas separation chamber, transformer oil is injected into the oil-gas separation chamber, and the oil return port and the nozzle are connected so that the transformer oil is transmitted from the oil return port to the nozzle and sprayed out by the nozzle. The vacuum pump can be used to extract gas from the oil-gas separation chamber to create a negative pressure in the oil-gas separation chamber. Under the negative pressure environment, the transformer oil in the oil-gas separation chamber can be circulated and continuously transported from the oil outlet to the nozzle and sprayed out through the nozzle. Since the transformer oil sprayed from the nozzle is in full contact with the negative pressure environment, the degassing efficiency of the transformer oil can be improved.

[0093] In an exemplary embodiment, the above step S204 may specifically include: controlling the three-way valve to connect the first channel between the oil inlet and the oil return port; opening the circulation solenoid valve to allow the transformer oil to enter the oil-gas separation chamber through the first channel.

[0094] The first channel may be a channel between the oil inlet and the oil return port.

[0095] Specifically, the computer device can control the three-way valve to connect the first channel between the oil inlet and the oil return port, and control the circulation solenoid valve between the oil return port and the three-way valve to open, so that the transformer oil enters the oil return port through the oil inlet, and then enters the oil-gas separation chamber through the oil return port.

[0096] In this embodiment, by controlling the three-way valve and the circulation solenoid valve, the transformer oil can be injected into the oil-gas separation chamber, thereby degassing the transformer oil.

[0097] In an exemplary embodiment, the above step S206 may specifically include: controlling the three-way valve to connect the second channel between the oil return port and the nozzle support; opening the check solenoid valve to allow the transformer oil to circulate through the second channel and enter the nozzle.

[0098] Among them, the second channel can be a channel between the oil return port and the nozzle support.

[0099] Specifically, after the transformer oil is injected, the circulation solenoid valve may not be closed. The computer device controls the three-way valve to connect the second channel between the oil return port and the nozzle support, and controls the check solenoid valve to open. Under the influence of the pressure, gravity, shear force, etc. in the oil-gas separation chamber, the transformer oil in the oil-gas separation chamber can be circulated continuously into the nozzle support from the oil return port, and then sprayed out through the nozzle at the top of the nozzle support to form an oil film in the oil-gas separation chamber.

[0100] In this embodiment, by controlling the three-way valve and the check solenoid valve, the transformer oil in the oil-gas separation chamber can be circulated and sprayed out continuously, so that the transformer oil is fully degassed and the efficiency of oil-gas separation is improved.

[0101] In an exemplary embodiment, after the above step S206, the following may be specifically included: if the gas sensor detects that the gas in the oil-gas separation chamber meets a preset condition, the gas outlet solenoid valve is opened to discharge the gas in the oil-gas separation chamber through the gas outlet.

[0102] The preset conditions include but are not limited to any one of the following: the pressure of the gas exceeds the preset pressure, the pressure no longer changes, the components contain preset components, the concentration exceeds the preset concentration, and the concentration no longer changes.

[0103] Specifically, after the transformer oil has been degassed for a period of time, the computer equipment can detect the gas in the oil-gas separation chamber through the gas sensor on the top of the oil-gas separation chamber. If it is detected that the gas in the oil-gas separation chamber meets the preset conditions, the gas outlet solenoid valve is controlled to open, and the gas separated from the transformer oil is discharged from the oil-gas separation chamber through the outlet.

[0104] In this embodiment, by controlling the gas outlet solenoid valve, the gas separated from the transformer can be discharged from the oil-gas separation chamber, thereby improving the efficiency of oil-gas separation.

[0105] In an exemplary embodiment, after the above step S206, it may also specifically include: controlling the three-way valve to connect the third channel between the oil return port, the nozzle support and the oil outlet; opening the oil outlet valve and starting the oil pump to discharge the transformer oil after oil and gas separation from the third channel.

[0106] Among them, the third channel can be a channel connecting the oil return port, the nozzle support and the oil outlet.

[0107] Specifically, during the process of circulating and spraying the transformer oil and discharging the gas separated from the transformer oil from the oil-gas separation chamber, the circulation solenoid valve and the check solenoid valve may not be closed, and the computer device controls the three-way valve to connect the third channel between the oil return port, the nozzle support and the oil outlet, and controls the opening of the oil outlet valve and the start-up of the oil pump to discharge the remaining transformer oil in the oil-gas separation chamber, the nozzle support and the oil return port pipeline through the third channel to the oil outlet, and then discharge the oil-gas separator from the oil outlet.

[0108] In this embodiment, by controlling the three-way valve, the oil outlet valve and the oil pump, the transformer oil remaining after degassing can be discharged from the oil-gas separator, thereby improving the efficiency of oil-gas separation.

[0109] In an exemplary embodiment, Figure 3 As shown, a method for separating oil and gas is provided, which may include the following steps:

[0110] Step S301, start the vacuum pump to extract gas from the oil-gas separation chamber;

[0111] Step S302, controlling the three-way valve to connect the first channel between the oil inlet and the oil return port, and opening the circulation solenoid valve to allow the transformer oil to enter the oil-gas separation chamber through the first channel;

[0112] Step S303, controlling the three-way valve to connect the second channel between the oil return port and the nozzle support, and opening the check solenoid valve to allow the transformer oil to circulate through the second channel and enter the nozzle;

[0113] Step S304, if the gas sensor detects that the gas in the oil-gas separation chamber meets the preset conditions, the gas outlet solenoid valve is opened to discharge the gas in the oil-gas separation chamber through the gas outlet;

[0114] Step S305, control the three-way valve to connect the third channel between the oil return port, the nozzle support and the oil outlet, open the oil outlet valve, and start the oil pump to discharge the transformer oil after oil and gas separation from the third channel.

[0115] Specifically, the computer device can control the vacuum pump to start, extract the gas in the oil-gas separation chamber, and put the oil-gas separation chamber in a negative pressure state. Then, the three-way valve is controlled to connect the first channel between the oil inlet and the oil return port, and the circulation solenoid valve is opened to inject the transformer oil into the oil-gas separation chamber through the first channel. During the degassing process, the computer device can control the three-way valve to connect the second channel between the oil return port and the nozzle support, and open the check solenoid valve to allow the transformer oil to circulate continuously through the second channel into the nozzle and be sprayed out through the nozzle. When the gas sensor detects that the gas in the oil-gas separation chamber meets the preset conditions, the computer device can open the gas outlet solenoid valve to discharge the gas separated from the transformer oil out of the oil-gas separation chamber. Then, the computer device can control the three-way valve to connect the third channel between the oil return port, the nozzle support and the oil outlet, and open the oil outlet valve and start the oil pump to discharge the remaining transformer oil out of the oil-gas separator.

[0116] The above oil-gas separation method can be performed by starting a vacuum pump to extract gas from the oil-gas separation chamber, controlling the three-way valve to connect the first channel between the oil inlet and the oil return port, opening the circulation solenoid valve to allow the transformer oil to enter the oil-gas separation chamber through the first channel, controlling the three-way valve to connect the second channel between the oil return port and the nozzle support, opening the check solenoid valve to allow the transformer oil to circulate through the second channel and enter the nozzle, if the gas sensor detects that the gas in the oil-gas separation chamber meets the preset conditions, then opening the gas outlet solenoid valve to allow the gas in the oil-gas separation chamber to be discharged through the gas outlet, controlling the three-way valve to connect the third channel between the oil return port, the nozzle support and the oil outlet, opening the oil outlet valve, and starting the oil pump to discharge the transformer oil after oil-gas separation from the third channel; a vacuum pump can be used to extract gas from the oil-gas separation chamber to create a negative pressure in the oil-gas separation chamber. Under the negative pressure environment, the transformer oil in the oil-gas separation chamber can be continuously transported from the oil outlet to the nozzle and sprayed out through the nozzle. Since the transformer oil sprayed from the nozzle is in full contact with the negative pressure environment, the degassing efficiency of the transformer oil can be improved.

[0117] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0118] In order to facilitate those skilled in the art to have a deeper understanding of the embodiments of the present application, a specific example will be described below.

[0119] In order to improve the working efficiency of transformer oil-gas separation and improve the accuracy of online monitoring of transformer operating status, while taking into account the economy and safety of transformer oil chromatographic analysis, the present application proposes a multi-porous injection negative pressure oil-gas separation method. When injecting transformer oil into the oil-gas separator, the method uses a multi-porous nozzle similar to a shower to spray the transformer oil. At the same time, the entire oil-gas separator is evacuated to a negative pressure state. Since the transformer oil is sprayed toward the oil-gas separator, it can fully contact the negative pressure environment, which is conducive to the separation of gas.

[0120] Among them, the multi-hole nozzle can be of various styles, including but not limited to:

[0121] Rotating shower structure: a top cover is set on the top, with a wire mesh, wire mesh frame, water dispersion disc, impeller, water jet disc, and water distribution disc built in. A rotating component is set at the bottom, which uses atmospheric pressure and gravity to sprinkle the oil through multiple small holes, and the spilled transformer oil is rotated by the rotating component to increase the influence of gravity and centrifugal force;

[0122] Water film fountain structure: Similar to the nozzle of mushroom head fountain, but with multiple small holes at the water outlet and a rotating assembly under the nozzle, so that the transformer oil sprayed out presents a semicircular water film shape;

[0123] Porous atomizing nozzle structure: A metal sheet is set in the small holes of the nozzle. When the transformer oil is sprayed out of the small holes, the transformer oil is ejected onto the metal sheet and scattered to form oil mist. The spraying effect is similar to that of the sunscreen spray nozzle.

[0124] The use process of the above-mentioned multi-hole jet negative pressure oil-gas separation method includes:

[0125] Step S401, under a constant temperature of 65°C, a vacuum pump extracts gas from the oil-gas separation chamber to form a vacuum negative pressure environment in the oil-gas separation chamber;

[0126] Step S402, introducing transformer oil with a fixed degree of refinement;

[0127] Step S403, using a porous nozzle to spray the transformer oil in the oil-gas separation chamber, so that the transformer oil is fully exposed to the negative pressure environment, and the gas dissolved in the transformer oil diffuses to the surroundings, thereby achieving oil-gas separation;

[0128] Step S404, extracting the degassed gas.

[0129] The present application also provides a multi-porous injection negative pressure oil and gas separation device, including: an oil and gas separation chamber 101, a liquid level sensor 102, a temperature sensor 103, an oil outlet valve 104, an oil pump 105, an oil outlet 106, a check solenoid valve 107, a nozzle support 109, a nozzle 112, an oil return port 108, a circulation solenoid valve 117, a three-way valve 118, an oil inlet 119, an oil film 113 sprayed from the nozzle, a filter 115, a vacuum solenoid valve 110, a vacuum pump 120, a pressure sensor 121, a gas sensor 114, an air outlet solenoid valve 111, and an air outlet 116.

[0130] The oil-gas separation chamber 101 is a sealed cavity for carrying out a degassing reaction.

[0131] The liquid level sensor 102 is located on the inner wall of the oil-gas separation chamber 101 and has an adjustable height. It is used to sense the amount of transformer oil injected, and when the amount of oil reaches a set value, the passage of the oil inlet 119 of the three-way valve 118 is closed.

[0132] The temperature sensor 103 can monitor the temperature of the oil-gas separation chamber 101 in real time to ensure that the temperature of the oil-gas separation chamber 101 is kept constant at 65°C.

[0133] Among them, the filter 115, the vacuum solenoid valve 110, and the vacuum pump 120 are connected in sequence and located above the oil-gas separation chamber 101, and are used to create a vacuum environment in the oil-gas separation chamber 101. Workflow: open the vacuum solenoid valve 110, the vacuum pump 120 starts to work, and the gas in the oil-gas separation chamber 101 is extracted, and the filter 115 filters the impurities in the oil-gas separation chamber. The pressure sensor 121 monitors the pressure in the oil-gas separation chamber 101 in real time to ensure that the oil-gas separation chamber 101 is in a negative pressure state, and solves the problem of unstable vacuum degree.

[0134] Among them, the nozzle 112 is connected to the nozzle support, and the transformer oil in the oil-gas separation chamber 101 is extracted from the oil return port 108 by pressure, and sprayed out from the nozzle 112 through the transportation of the nozzle support 109, so that the transformer oil is fully exposed to the vacuum negative pressure environment, which is conducive to oil and gas separation. At the same time, this method can spray the transformer oil in the oil-gas separation chamber 101 for multiple cycles to fully degas the transformer oil. The style of the nozzle 112 can be diverse. The transformer oil sprayed by the nozzle forms oil mist or even oil film 113 under the action of pressure, gravity, shear force, etc. and falls under the oil-gas separation chamber. The oil film 113 sprayed by the nozzle in Figure 1 is only an example, and the oil sprayed by the nozzle can be in various forms.

[0135] The gas sensor 114 is located above the oil-gas separation chamber 101, and monitors the gas in the oil-gas separation chamber 101 in real time. When degassing is completed and the oil-gas separation chamber 101 is filled with more gas, the gas outlet solenoid valve 111 is opened in time to extract the required gas. When the gas sensor 114 fails to detect the required gas, the gas outlet solenoid valve 111 is closed in time.

[0136] The oil pump 105, the oil outlet valve 104 and the oil outlet 106 are connected in sequence to discharge the degassed transformer oil. The transformer oil discharge process: the transformer oil passes through the oil return port 108 and the circulation solenoid valve 117; the path of the oil return port 108 connecting the oil outlet 106 in the three-way valve is opened; the transformer oil passes through the oil pump 105 and finally opens the oil outlet valve 104 to be discharged from the oil outlet 106.

[0137] The use process of the above-mentioned multi-hole jet negative pressure oil-gas separation device includes the following steps:

[0138] Step S411, create a degassing environment. The temperature sensor 103 measures the temperature in real time to ensure that the oil-gas separation chamber 101 is kept at a constant temperature of 65°C. The vacuum solenoid valve 110 is opened, and the vacuum pump 120 is started to pump out the gas in the oil-gas separation chamber 101 to create a vacuum environment. The pressure sensor 121 detects the pressure in the oil-gas separation chamber 101 to ensure that the vacuum degree reaches the set value.

[0139] Step S412, sampling. Extract transformer oil, open the passage of the three-way valve 118 connecting the oil inlet 119 and the oil return port 108, and open the circulation solenoid valve 117. The transformer oil enters the oil-gas separation chamber 101 from the oil inlet 119 to the oil return port 108. After the sampling is completed, close the passage of the three-way valve 118 connecting the oil inlet 119 and the oil return port 108.

[0140] Step S413, degassing. Open the three-way valve 118 to connect the pipeline between the oil return port 108 and the nozzle support, and open the check solenoid valve 107 and the circulation solenoid valve 117. The transformer oil is continuously transmitted from the oil return port 8 to the nozzle 112. Then the nozzle 112 sprays the transformer oil. In this process, the gas dissolved in the transformer oil diffuses to the surroundings and separates from the oil. This process can be continuously circulated.

[0141] Step S414 , exhausting gas. When the gas sensor 114 detects gas, the gas outlet solenoid valve 111 is opened, and the gas is discharged from the gas outlet 116 .

[0142] Step S415, draining the transformer oil. After degassing is completed, all the remaining transformer oil needs to be drained. Open the three-way valve 118 to connect the channel between the oil return port 108 and the nozzle support 109 and the oil outlet 106, open the circulation solenoid valve 117, and open the oil outlet valve 106. Start the oil pump 105, and the transformer oil in the oil-gas separation chamber 101, the nozzle support 109 and the oil return port pipeline is pumped away. The bottom of the multi-porous injection negative pressure oil-gas separation device is funnel-shaped, which is conducive to the discharge of transformer oil.

[0143] The advantages of the above-mentioned multi-hole jet negative pressure oil-gas separation device are: the design of the nozzle can be diversified, the speed of transformer oil spilling can be designed, and the transformer oil can be made into oil mist, oil film, and oil surface similar to mushroom head fountain in the process of spilling. The process of spraying transformer oil can be repeated, and the sprayed transformer oil can continue to be sprayed, which is conducive to oil-gas separation and improves the degassing rate. The mutual cooperation of the funnel-shaped bottom and the oil pump can make the transformer oil in the oil-gas separation chamber be completely discharged. Through the mutual cooperation of the solenoid valve and the sensor, degassing automation can be realized. The method and device are economical and safe, and have great practical significance.

[0144] Based on the same inventive concept, the embodiment of the present application also provides an oil-gas separation device for implementing the oil-gas separation method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more oil-gas separation device embodiments provided below can refer to the limitations of the oil-gas separation method above, and will not be repeated here.

[0145] In an exemplary embodiment, an oil-gas separation device is provided, comprising: an opening module, an injection module and a communication module, wherein:

[0146] An opening module is used to open the vacuum pump to extract gas from the oil-gas separation chamber;

[0147] An injection module, used for injecting transformer oil into the oil-gas separation chamber;

[0148] The connecting module is used to connect the oil return port and the nozzle, so that the transformer oil is transmitted from the oil return port to the nozzle and sprayed out by the nozzle.

[0149] In an exemplary embodiment, the injection module is also used to control the three-way valve to connect the first channel between the oil inlet and the oil return port; open the circulation solenoid valve to allow the transformer oil to enter the oil-gas separation chamber through the first channel.

[0150] In an exemplary embodiment, the above-mentioned connecting module is also used to control the three-way valve to connect the second channel between the oil return port and the nozzle support; open the check solenoid valve to allow the transformer oil to circulate through the second channel and enter the nozzle.

[0151] In an exemplary embodiment, the oil-gas separation device further includes an exhaust module for opening the exhaust solenoid valve if the gas sensor detects that the gas in the oil-gas separation chamber meets preset conditions, so as to discharge the gas in the oil-gas separation chamber through an exhaust port.

[0152] In an exemplary embodiment, the oil-gas separation device further includes an oil drain module, which is used to control the three-way valve to connect the third channel between the oil return port, the nozzle support and the oil outlet; open the oil outlet valve, and start the oil pump to discharge the transformer oil after oil and gas separation from the third channel.

[0153] Each module in the above oil-gas separation device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0154] In an exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be shown in FIG4. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, the memory, and the input / output interface are connected via a system bus, and the communication interface, the display unit, and the input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner may be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, an oil and gas separation method is implemented. The display unit of the computer device is used to form a visually visible picture, which may be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0155] Those skilled in the art will understand that the structure shown in FIG. 4 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0156] In one embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0157] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0158] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0159] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0160] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0161] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0162] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An oil-gas separator, characterized in that: It includes oil-gas separation chamber, vacuum pump, oil return port and nozzle; The oil-gas separation chamber is a sealed cavity, and the vacuum pump is connected to the oil-gas separation chamber to extract gas from the oil-gas separation chamber to form a negative pressure in the oil-gas separation chamber; The oil return port and the spray head are both located inside the oil-gas separation chamber. The oil return port and the spray head are connected by a pipeline and are used to spray transformer oil inside the oil-gas separation chamber to separate the transformer oil from oil.

2. The oil-gas separator according to claim 1, characterized in that: The oil-gas separator also includes a nozzle support, an oil inlet and an oil outlet; The top of the nozzle support is connected to the nozzle, and the bottom is connected to the oil return port; The oil inlet and the oil outlet are both located at the bottom of the oil-gas separation chamber; A three-way valve is arranged between the oil return port, the nozzle support, the oil inlet and the oil outlet, a circulation solenoid valve is arranged between the oil return port and the three-way valve, a check solenoid valve is arranged between the nozzle support and the three-way valve, and an oil pump and an oil outlet valve are arranged between the oil outlet and the three-way valve.

3. The oil-gas separator according to claim 1, characterized in that: The oil-gas separator further comprises a gas sensor and an air outlet, wherein the gas sensor and the air outlet are both located at the top of the oil-gas separation chamber, and an air outlet solenoid valve is arranged between the air outlet and the oil-gas separation chamber.

4. The oil-gas separator according to claim 1, characterized in that: The vacuum pump is located at the top of the oil-gas separation chamber, and is connected to the oil-gas separation chamber via a vacuum solenoid valve. A filter is provided between the vacuum solenoid valve and the oil-gas separation chamber.

5. The oil-gas separator according to claim 1, characterized in that: The oil-gas separator further includes at least one of a temperature sensor, a liquid level sensor and a pressure sensor.

6. An oil-gas separation method based on the oil-gas separator according to claim 1, characterized in that: The method comprises: Turning on the vacuum pump to extract gas from the oil-gas separation chamber; injecting transformer oil into the oil-gas separation chamber; The oil return port and the spray head are connected so that the transformer oil is transferred from the oil return port to the spray head and sprayed out by the spray head.

7. The method according to claim 6, characterized in that The step of injecting transformer oil into the oil-gas separation chamber comprises: Controlling the three-way valve to connect the first channel between the oil inlet and the oil return port; The circulation solenoid valve is opened to allow the transformer oil to enter the oil-gas separation chamber through the first channel.

8. The method according to claim 7, characterized in that The connecting oil return port and the nozzle include: Control the three-way valve to connect the second channel between the oil return port and the nozzle support; The check solenoid valve is opened to allow the transformer oil to circulate through the second channel and enter the spray head.

9. The method according to claim 8, characterized in that The method further comprises: If the gas sensor detects that the gas in the oil-gas separation chamber meets the preset conditions, the gas outlet solenoid valve is opened to discharge the gas in the oil-gas separation chamber through the gas outlet.

10. The method according to claim 8, characterized in that The method further comprises: Control the three-way valve to connect the third channel between the oil return port, the nozzle support and the oil outlet; The oil outlet valve is opened and the oil pump is started to discharge the transformer oil after oil and gas separation from the third channel.

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