Gas-liquid separation system, liquid discharge method and gas preparation device

Abstract

The invention relates to the technical field of gas-liquid separation, in particular to a gas-liquid separation system, a liquid drainage method and a gas preparation device.The gas-liquid separation system comprises a separator shell, a hollow cavity is formed in the separator shell in the axial direction, and a gas inlet hole and a gas outlet hole which communicate with the hollow cavity are formed in the upper end of the separator shell; a liquid discharge hole communicated with the hollow cavity is formed in the lower end of the separator shell; the liquid level sensor is arranged on the separator shell and is used for detecting the liquid level of the accumulated water in the hollow cavity; and the electric control switch valve is arranged on the separator shell and communicated with the liquid discharging hole, and the electric control switch valve is electrically connected with the liquid level sensor. The gas-liquid separation effect can be guaranteed, gas is prevented from escaping from the liquid drainage hole, gas waste is reduced, the gas production efficiency is improved, and controllable liquid drainage is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas-liquid separation, and in particular to a gas-liquid separation system, a liquid discharge method and a gas preparation device. Background Art

[0002] The gas-liquid separation system is used to separate gas and liquid from a mixture of liquid and gas. It can perform gas-liquid separation on various gases such as compressed air, hydrogen, oxygen, etc.

[0003] In the process of producing hydrogen or oxygen as needed, the gas produced in the gas production system is prone to carry a large amount of water. Therefore, gas-liquid separation is a very critical link. In the process of gas-liquid separation, the gas is easy to escape through the drainage hole, resulting in gas waste and reduced gas production efficiency.

[0004] Moreover, the existing gas-liquid separator is not sufficiently sealed and does not have a controllable liquid discharge function. After working for a long time, the internal liquid increases, affecting the normal operation of the hydrogen production system.

[0005] Therefore, a gas-liquid separation system, a liquid discharge method and a gas preparation device are needed to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a gas-liquid separation system, a drainage method and a gas preparation device, which can ensure the gas-liquid separation effect, avoid gas escaping from the drainage hole, reduce gas waste, improve gas production efficiency, and achieve controllable drainage.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] Gas-liquid separation system, including:

[0009] A separator shell, wherein a hollow cavity is formed along the axial direction of the separator shell, an air inlet hole and an air outlet hole communicating with the hollow cavity are formed at the upper end of the separator shell, and a liquid discharge hole communicating with the hollow cavity is formed at the lower end of the separator shell;

[0010] A liquid level sensor, which is arranged on the separator housing and is used to detect the liquid level of the accumulated water in the hollow cavity;

[0011] An electrically controlled switch valve is arranged on the separator housing and is connected to the drainage hole. The electrically controlled switch valve is electrically connected to the liquid level sensor. When the liquid level of the accumulated water reaches a preset first set height value, the liquid level sensor can control the electrically controlled switch valve to open for drainage, until the liquid level in the hollow cavity drops to a preset second set height value, and the liquid level sensor controls the electrically controlled switch valve to close.

[0012] Furthermore, the separator housing comprises a main body and a drainage cover which are sealed to each other, the main body has the hollow cavity, the air inlet and the air outlet are provided on the main body, and the drainage hole is provided on the drainage cover.

[0013] Furthermore, it also includes a sealing ring, and a mounting ring groove is opened on one side of the main body facing the drain cover, the sealing ring is embedded in the mounting ring groove, and the sealing ring protrudes relative to the mounting ring groove.

[0014] Furthermore, it also includes an air inlet quick-plug connector and an air outlet quick-plug connector, the air inlet quick-plug connector is inserted at the air inlet hole, and the air outlet quick-plug connector is inserted at the air outlet hole.

[0015] Furthermore, it also includes a condenser, which is arranged on the separator shell and communicated with the air inlet.

[0016] Furthermore, the condenser is provided with a connecting ear plate, the connecting ear plate is provided with a first connecting hole, the separator housing is provided with a second connecting hole, and a fastener passes through the first connecting hole to connect with the second connecting hole.

[0017] Furthermore, the liquid level sensor has a first probe and a second probe, the first probe and the second probe are both arranged on the separator housing, and the first probe is located above the second probe.

[0018] Furthermore, it also includes a drainage quick-plug connector, which is connected to the water inlet of the electric control switch valve and the drainage hole.

[0019] The drainage method uses the gas-liquid separation system as described above to drain the water after gas-liquid separation, comprising the following steps:

[0020] S1, close the electronically controlled switch valve;

[0021] S2, the prepared gas enters the hollow cavity from the air inlet of the separator shell, and the separated gas is discharged through the exhaust hole;

[0022] S3, a liquid level sensor monitors the liquid level in the hollow cavity in real time;

[0023] S4. When the liquid level reaches a preset first set height value, the liquid level sensor controls the electric control switch valve to open for drainage, until the liquid level in the hollow cavity drops to a preset second set height value, and the liquid level corresponding to the second set height value is higher than the drainage hole.

[0024] A gas preparation device comprises the gas-liquid separation system as described above.

[0025] Beneficial effects of the present invention:

[0026] The gas-liquid separation system provided by the present invention has a hollow cavity on the separator shell, an air inlet and an air outlet on the upper end of the separator shell, a drainage hole on the lower end of the separator shell, a liquid level sensor on the separation gas shell, and an electric control switch valve at the drainage hole. In the process of gas-liquid separation, the liquid level sensor monitors the liquid level in the hollow cavity in real time. When the liquid level reaches a preset first set height value, the liquid level sensor controls the electric control switch valve to open for drainage. When the water level drops to a preset second set height value, the liquid level sensor controls the electric control switch valve to close, thereby realizing controllable drainage. Moreover, by providing an electric control switch valve, when the electric control switch valve is closed, gas is prevented from escaping from the drainage hole, gas waste is reduced, and gas production efficiency is improved.

[0027] The present invention provides a drainage method that uses the gas-liquid separation system as described above to drain water after gas-liquid separation, which can ensure the gas-liquid separation effect, prevent gas from escaping from the drainage hole, reduce gas waste, improve gas production efficiency, and achieve controllable drainage.

[0028] A gas preparation device provided by the present invention includes the gas-liquid separation system as described above, which can ensure the gas-liquid separation effect, prevent gas from escaping from the drainage hole, reduce gas waste, improve gas production efficiency, and achieve controllable drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0030] Figure 1 is a schematic diagram of a gas-liquid separation system of the present invention;

[0031] Figure 2 is an exploded view of a gas-liquid separation system of the present invention;

[0032] Figure 3 It is a flow chart of a liquid discharge method of the present invention.

[0033] In the figure:

[0034] 1. Separator housing; 11. Main body; 12. Drain cover; 13. Sealing ring; 2. Inlet quick connector; 21. Condenser; 22. Connecting ear plate; 3. Outlet quick connector; 4. Liquid level sensor; 5. Drain quick connector. DETAILED DESCRIPTION

[0035] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0036] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0037] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, a gas-liquid separation system and / or a gas-liquid separation system can represent: the existence of a gas-liquid separation system alone, the existence of a gas-liquid separation system and a gas-liquid separation system at the same time, and the existence of a gas-liquid separation system alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0038] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0039] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0040] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0041] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0042] After the gas is prepared, gas-liquid separation is required. In order to ensure the gas-liquid separation effect, prevent gas from escaping from the drainage hole, reduce gas waste, improve gas production efficiency, and achieve controllable drainage, such as Figure 1-Figure 2As shown, the present invention provides a gas-liquid separation system. The gas-liquid separation system includes a separator housing 1, a hollow cavity is provided along the axial direction of the separator housing 1, an air inlet hole and an air outlet hole connected to the hollow cavity are provided at the upper end of the separator housing 1, and a liquid discharge hole connected to the hollow cavity is provided at the lower end of the separator housing 1; a liquid level sensor 4 is fixedly arranged on the separator housing 1, and is used to detect the liquid level of the accumulated water in the hollow cavity; an electric control switch valve is arranged on the separator housing 1, and is connected to the liquid discharge hole, and the electric control switch valve is electrically connected to the liquid level sensor 4, and when the liquid level of the accumulated water reaches a preset first set height value, the liquid level sensor 4 can control the electric control switch valve to open for drainage, until the liquid level in the hollow cavity drops to a preset second set height value, and the liquid level sensor 4 controls the electric control switch valve to close.

[0043] During the gas-liquid separation process, the liquid level sensor 4 monitors the liquid level in the hollow cavity in real time. When the liquid level is high, the liquid level sensor 4 controls the electric control switch valve to open for drainage. When the water level drops to a lower position, the liquid level sensor 4 controls the electric control switch valve to close, thereby achieving controllable drainage. Moreover, by setting the electric control switch valve, when the water level drops to a lower position and the electric control switch valve is closed, there is still liquid blocking the drainage hole, preventing gas from escaping from the drainage hole, reducing gas waste, and improving gas production efficiency.

[0044] Furthermore, the separator housing 1 includes a main body 11 and a drain cover 12 which are sealed and connected to each other, the main body 11 has a hollow cavity, and the air inlet and the exhaust holes are provided on the main body 11, and the liquid drain hole is provided on the drain cover 12. By designing the separator housing 1 as a split structure of the main body 11 and the drain cover 12, it is convenient to clean and maintain the hollow cavity, and it is also convenient to manufacture.

[0045] Furthermore, the gas-liquid separation system also includes a sealing ring 13. A mounting ring groove is provided on one side of the main body 11 facing the drain cover 12. The sealing ring 13 is embedded in the mounting ring groove, and the sealing ring 13 protrudes relative to the mounting ring groove. The sealing ring 13 is provided to seal the gap between the drain cover 12 and the main body 11, thereby preventing water and gas from being discharged from the gap between the drain cover 12 and the main body 11, and improving the sealing of the connection between the drain cover 12 and the main body 11. The mounting ring groove is provided to facilitate positioning and installation of the sealing ring 13. In other embodiments, the mounting ring groove can be provided on the main body 11, and no excessive restrictions are made here.

[0046] Furthermore, the gas-liquid separation system further includes an alarm, which is electrically connected to the liquid level sensor 4. By setting the alarm, when the liquid level in the cavity exceeds the set maximum liquid level and reaches the warning liquid level, if the electronically controlled switch valve has not been opened, the liquid level sensor 4 controls the alarm to sound an alarm, thereby reminding relevant personnel to intervene and manually drain the water, so as to ensure that the hydrogen production system can operate stably and prevent safety accidents. The alarm can sound an alarm in the form of voice, sound and light.

[0047] Furthermore, the gas-liquid separation system also includes an air inlet quick-plug connector 2 and an air outlet quick-plug connector 3, the air inlet quick-plug connector 2 is inserted at the air inlet hole, and the air outlet quick-plug connector 3 is inserted at the air outlet hole. By setting the air inlet quick-plug connector 2 and the air outlet quick-plug connector 3, it is convenient to connect with the hydrogen production equipment and the hydrogen storage equipment. In other embodiments, the air inlet quick-plug connector 2 and the air outlet quick-plug connector 3 can also be installed in a threaded connection manner, and no excessive restrictions are made here. Furthermore, it is necessary to perform sealing treatment at the position where the air inlet quick-plug connector 2 and the air outlet quick-plug connector 3 are installed to prevent gas escape.

[0048] Furthermore, the gas-liquid separation system further comprises a drainage quick-plug connector 5, which is connected to the water inlet and the drainage hole of the electric control switch valve. By providing the drainage quick-plug connector 5, the electric control switch valve and the drainage hole can be easily connected.

[0049] Furthermore, the gas-liquid separation system further comprises a condenser 21, which is arranged on the separator housing 1 and communicated with the air inlet. The condenser 21 is used to liquefy water in the gas, so that after entering the accommodating chamber, the water can be quickly separated from the gas.

[0050] Furthermore, a connecting ear plate 22 is fixedly provided on the condenser 21, a first connecting hole is provided on the connecting ear plate 22, a second connecting hole is provided on the separator housing 1, and a fastener passes through the first connecting hole and is connected to the second connecting hole. In the above manner, the condenser 21 is conveniently installed and fixed on the separator housing 1, and it is convenient to replace it after a condenser fails.

[0051] Furthermore, the liquid level sensor 4 has a first probe and a second probe, both of which are arranged on the separator housing 1, and the first probe is located above the second probe. Specifically, the first probe corresponds to the high liquid level in the hollow cavity, and the second probe corresponds to the low liquid level in the hollow cavity. In this embodiment, the liquid level sensor 4 is a non-contact liquid level sensor 4, which breaks through the influence of the wall thickness of the separator housing 1 and realizes the true non-contact detection of the liquid level height in the separator housing 1. There is no need to open a hole in the separator housing 1, the installation is simple, and the production is not affected. It can detect the liquid levels of various liquid toxic substances, strong acids, strong alkalis and various liquids in high-pressure sealed containers. The liquid level sensor 4 has no special requirements for the materials of the liquid medium and non-metallic containers and can be widely used.

[0052] The non-contact liquid level sensor uses the capacitance of sensing water to detect whether there is liquid. When there is no liquid approaching the liquid level sensor 4, due to the existence of distributed capacitance on the liquid level sensor 4, there is a certain static capacitance between the liquid level sensor 4 and the ground. When the liquid level slowly rises and approaches the liquid level sensor 4, the parasitic capacitance of the liquid will be coupled to the static capacitance of the liquid level sensor 4, making the capacitance value of the liquid level sensor 4 larger. The changed capacitance signal is used to calculate and judge the degree of this change. When this change exceeds a certain threshold, it is considered that the liquid level has reached the sensing point.

[0053] Furthermore, in some embodiments, timed drainage (periodic drainage) can also be used to discharge the condensed liquid in the gas-liquid separator through a solenoid valve controlled by a timer. In this embodiment, the liquid level sensor 4 is only used to monitor the liquid height in the hollow cavity. When it is close to or exceeds the water level, the liquid level sensor 4 inputs a signal to the controller, and the controller outputs an alarm signal through the alarm to inform the user that the gas-liquid separator has not been drained in time. It is a prior art to use a controller to control the alarm, and the working principle will not be repeated here.

[0054] like Figure 3 As shown, this embodiment also provides a drainage method, which uses the above gas-liquid separation system to drain water after gas-liquid separation, including the following steps:

[0055] S1, close the electronically controlled switch valve;

[0056] S2, the prepared gas enters the hollow cavity from the air inlet of the separator housing 1, and the separated gas is discharged through the exhaust hole;

[0057] S3, the liquid level sensor 4 monitors the liquid level in the hollow cavity in real time;

[0058] S4, when the liquid level reaches the preset first set height value, the liquid level sensor 4 controls the electric control switch valve to open for drainage, until the liquid level in the hollow cavity drops to the preset second set height value, the liquid level sensor 4 controls the electric control switch valve to close, and the liquid level corresponding to the second set height value is higher than the drainage hole. Through the above method, the gas-liquid separation effect can be ensured, the gas can be prevented from escaping from the drainage hole, the waste of gas can be reduced, the gas production efficiency can be improved, and the controllable drainage can be achieved.

[0059] This embodiment also provides a gas preparation device, including the gas-liquid separation system as described above, which can ensure the gas-liquid separation effect, prevent gas from escaping from the drainage hole, reduce gas waste, improve gas production efficiency, and achieve controllable drainage.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Gas-liquid separation system, It is characterized in that include: A separator shell (1), wherein a hollow cavity is provided along the axial direction of the separator shell (1), an air inlet hole and an air outlet hole communicating with the hollow cavity are provided at the upper end of the separator shell (1), and a liquid discharge hole communicating with the hollow cavity is provided at the lower end of the separator shell (1); A liquid level sensor (4), the liquid level sensor (4) being arranged on the separator housing (1) and being used to detect the liquid level of the accumulated water in the hollow cavity; An electrically controlled switch valve is arranged on the separator housing (1) and is in communication with the drainage hole. The electrically controlled switch valve is electrically connected to the liquid level sensor (4); when the liquid level of the accumulated water reaches a preset first set height value, the liquid level sensor (4) can control the electrically controlled switch valve to open for drainage, until the liquid level in the hollow cavity drops to a preset second set height value, at which time the liquid level sensor (4) controls the electrically controlled switch valve to close.

2. The gas-liquid separation system according to claim 1, It is characterized in that The separator housing (1) comprises a main body (11) and a drainage cover (12) which are sealed to each other, the main body (11) having the hollow cavity, the air inlet and the air outlet opening being provided on the main body (11), and the liquid drainage hole being provided on the drainage cover (12).

3. The gas-liquid separation system according to claim 2, It is characterized in that It also comprises a sealing ring (13); a mounting ring groove is provided on one side of the main body (11) facing the drain cover (12); the sealing ring (13) is embedded in the mounting ring groove, and the sealing ring (13) protrudes relative to the mounting ring groove.

4. The gas-liquid separation system according to claim 1, It is characterized in that It also comprises an air inlet quick-connect connector (2) and an air outlet quick-connect connector (3), wherein the air inlet quick-connect connector (2) is inserted at the air inlet hole, and the air outlet quick-connect connector (3) is inserted at the air outlet hole.

5. The gas-liquid separation system according to claim 1, It is characterized in that It also comprises a condenser (21), wherein the condenser (21) is arranged on the separator housing (1) and is in communication with the air inlet hole.

6. The gas-liquid separation system according to claim 5, It is characterized in that The condenser (21) is provided with a connecting ear plate (22), the connecting ear plate (22) is provided with a first connecting hole, the separator housing (1) is provided with a second connecting hole, and a fastener passes through the first connecting hole and is connected to the second connecting hole.

7. The gas-liquid separation system according to claim 1, It is characterized in that The liquid level sensor (4) comprises a first probe and a second probe, wherein the first probe and the second probe are both arranged on the separator housing (1), and the first probe is located above the second probe.

8. The gas-liquid separation system according to claim 1, It is characterized in that It also comprises a drainage quick-connect connector (5), wherein the drainage quick-connect connector (5) is connected to the water inlet of the electric-controlled switch valve and the drainage hole.

9. Drainage method, It is characterized in that Using the gas-liquid separation system according to any one of claims 1 to 8 to carry out drainage after gas-liquid separation comprises the following steps: S1, close the electronically controlled switch valve; S2, the prepared gas enters the hollow cavity from the air inlet of the separator housing (1), and the separated gas is discharged through the exhaust hole; S3, a liquid level sensor (4) monitors the liquid level in the hollow cavity in real time; S4. When the liquid level reaches a preset first set height value, the liquid level sensor (4) controls the electric control switch valve to open for drainage, until the liquid level in the hollow cavity drops to a preset second set height value, and the liquid level corresponding to the second set height value is higher than the drainage hole.

10. Gas preparation equipment, It is characterized in that Comprising a gas-liquid separation system as described in any one of claims 1-8.

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