Mechanical gas-liquid separation and liquid level automatic control device for SPE (Solid Phase Extraction) differential pressure water electrolysis system

Abstract

The invention provides a mechanical gas-liquid separation and liquid level automatic control device for an SPE (Solid Phase Extraction) differential pressure water electrolysis system, which comprises a vertical cylinder body, and the two ends of the cylinder body are fixedly connected with elliptical heads and are respectively connected with an exhaust pipe and a liquid discharge pipe; a gas-liquid inlet pipe communicated with the interior of the barrel is arranged on the side wall of the barrel; a floating plate is arranged in the barrel body, and a blocking piece matched with a pipe opening of the liquid discharging pipe is connected to the lower portion of the floating plate; the floating plate is formed into a structure matched with the interior of the barrel, and the floating plate can drive the blocking piece below to move in the axial direction of the barrel along with the change of the height of the liquid level in the barrel so as to open or close the liquid discharging pipe. In the electrolysis process, the tip cone is driven by the floating plate to do reciprocating motion under the combined action of buoyancy and gravity, and the gas-liquid separation and liquid level automatic control functions are achieved; liquid level control is integrated in the device, and the size is small; the device is purely mechanical, free of electronic control devices, convenient to maintain and high in reliability.

Description

Technical Field

[0001] The invention relates to the technical field of SPE differential pressure electrolysis water, and in particular to a mechanical gas-liquid separation and liquid level automatic control device for an SPE differential pressure electrolysis water system. Background Art

[0002] The mechanical gas-liquid separation and liquid level automatic control device is installed in the SPE differential pressure electrolysis water gas-liquid separation and liquid level control system, which is used to separate the hydrogen (oxygen) gas and electrolyte produced by electrolysis, and control the liquid level in the separation device to prevent hydrogen and oxygen from mixing. In the field of SPE differential pressure electrolysis water, the hydrogen (oxygen) gas produced by electrolysis needs to be separated from the electrolyte. At the same time, since the hydrogen and oxygen sides are controlled by differential pressure, the liquid levels of the two hydrogen and oxygen separation devices need to be strictly controlled to prevent the high-pressure side liquid from being completely pressed into the low-pressure side, thereby causing hydrogen and oxygen to mix, and even causing the container to explode. At present, the two separation devices are generally controlled by adding an electric control valve between the two hydrogen and oxygen separation devices. This method has high requirements on the control accuracy and reliability of the electric control valve. When the electric control valve is ineffective, there is still a risk of hydrogen and oxygen mixing, which cannot meet customer needs. Summary of the invention

[0003] In view of the problems existing in the prior art, the present application proposes a mechanical gas-liquid separation and liquid level automatic control device for an SPE differential pressure electrolysis water system, comprising a cylinder, the cylinder being a vertical cylindrical structure, the upper end of the cylinder being fixedly connected to a first elliptical seal head, the first elliptical seal head being provided with an exhaust pipe communicating with the interior of the cylinder; the lower end of the cylinder being fixedly connected to a second elliptical seal head, the second elliptical seal head being provided with a liquid discharge pipe communicating with the interior of the cylinder; the side wall of the cylinder being provided with a gas-liquid inlet pipe communicating with the interior of the cylinder;

[0004] A floating plate is provided in the cylinder, and a plugging piece that cooperates with the pipe mouth of the drainage pipe is connected below the floating plate; the floating plate is formed into a structure that cooperates with the cylinder, and the floating plate can drive the plugging piece below to move axially along the cylinder as the liquid level in the cylinder changes, thereby opening or closing the drainage pipe.

[0005] Furthermore, the cylinder body is divided into an air cavity and a liquid cavity, and is made of a seamless steel pipe.

[0006] Furthermore, the cylinder is provided with a positioning rod fixing plate, which matches the cross-sectional size of the cylinder and is fixedly connected to the inner wall of the cylinder; the positioning rod fixing plate is fixedly penetrated by a plurality of positioning rods at a position avoiding the center of the circle, and the plurality of positioning rods are arranged parallel to the central axis of the cylinder.

[0007] Furthermore, a ball slider is sleeved on the positioning rod, and the ball slider is connected to the positioning rod by an interference fit; the outside of the ball slider is a floating plate, and the floating plate is connected to the ball slider by an interference fit.

[0008] Furthermore, the position of the gas-liquid inlet pipe is located below the positioning rod fixing plate.

[0009] Furthermore, the positioning rod fixing plate is provided with an air vent, and the floating plate is provided with a water hole.

[0010] Furthermore, a sealing base is provided at the bottom of the second elliptical head, and the sealing base is fixedly connected to the second elliptical head; a sealing filler and a drain pipe are provided inside the sealing base, and the sealing filler and the drain pipe are connected to the sealing base in an over-fitting manner; the lower part of the sealing base is a locking nut, and the locking nut is threadedly connected to the sealing base.

[0011] The mechanical gas-liquid separation and liquid level automatic control device for the SPE differential pressure water electrolysis system provided by the present invention has the following beneficial effects compared with the prior art:

[0012] In the electrolysis process, the present invention drives the top cone to reciprocate under the combined action of buoyancy and gravity through the floating plate, and has the functions of gas-liquid separation and automatic liquid level control; the device integrates the liquid level control inside the device, and has a small size; it is purely mechanical, has no electronic control components, is easy to maintain, and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a working state schematic diagram I of the present invention;

[0014] Figure 2 It is the working state schematic diagram II of the present invention.

[0015] Serial numbers and names of the accompanying drawings: 1. First elliptical head, 2. Floating plate, 3. Ball slider, 4. Cylinder, 5. Positioning rod, 6. Gas and liquid inlet pipe, 7. Positioning plate fixing plate, 8. Second elliptical head, 9. Exhaust pipe, 10. Top cone, 11. Sealing base, 12. Sealing packing, 13. Drain pipe, 14. Locking nut. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Reference Figure 1 and Figure 2The present application proposes a mechanical gas-liquid separation and liquid level automatic control device for an SPE differential pressure water electrolysis system, comprising a cylinder, a first elliptical head on the top of the cylinder, and the first elliptical head is welded to the cylinder; an exhaust pipe is arranged on the top of the first elliptical head, and the exhaust pipe is welded to the first elliptical head; there are two positioning rod fixing plates inside the cylinder, and the positioning rod fixing plates are welded to the cylinder; positioning rods are arranged on both sides of the axis of the positioning rod fixing plate, and the positioning rods are welded to the positioning rod fixing plates; a ball slider is sleeved on the positioning rod, and the ball slider is over-fitted with the positioning rod; the ball slider is outside the The top of the cylinder is a floating plate, which is connected to the ball slider by interference fit; the lower part of the floating plate is a top cone, which is connected to the floating plate by interference fit; a gas-liquid inlet pipe is arranged in the middle of the cylinder, which is welded to the cylinder; the lower part of the cylinder is a second elliptical head, which is welded to the cylinder; a sealing base is arranged at the bottom of the second elliptical head, which is welded to the second elliptical head; a sealing filler and a drain pipe are arranged inside the sealing base, which are connected to the sealing base by excessive fit; a locking nut is arranged at the lower part of the sealing base, which is threadedly connected to the sealing base.

[0018] The cylinder body is a vertical cylindrical structure, divided into an air chamber and a liquid chamber, and is made of seamless steel pipe.

[0019] An exhaust pipe is arranged on the upper part of the cylinder, a gas and liquid inlet pipe is arranged in the middle part, a liquid discharge pipe is arranged at the bottom, and a floating plate, a positioning rod fixing plate, a positioning rod, a ball slider, a top cone, a sealing base and a sealing filler are arranged inside.

[0020] The top cone is connected to the floating plate by interference fit. The floating plate drives the top cone to achieve reciprocating motion under the combined action of buoyancy and gravity. The automatic control of the liquid level in the separation device is achieved through the contact and separation of the top cone and the sealing packing.

[0021] After the float plate drives the top cone to rise, the liquid is discharged from the separation device through the discharge pipe.

[0022] The up and down movement of the floating plate in the gas-liquid mixture will accelerate the separation of gas and liquid in the separator. The gas enters the gas cavity and is discharged from the separation device through the exhaust pipe, thus achieving gas-liquid separation.

[0023] The working process of the present invention is:

[0024] During the operation of the SPE differential pressure electrolysis water system, the internal pressure of the device is higher than the pressure at the rear end of the discharge pipe; the gas-liquid mixture enters the device from the gas-liquid inlet pipe, and under the action of gravity, the gas and liquid are separated, and the gas is discharged from the device through the exhaust pipe at the top of the device; under the combined action of gravity and the pressure in the cavity, the top cone fits tightly with the sealing filler, and the liquid falls into the liquid cavity of the device and is stored at the bottom. As the gas-liquid mixture continues to enter, the liquid in the liquid cavity of the device accumulates more and more. When the buoyancy of the floating plate and the top cone is greater than their own gravity, the floating plate drives the top cone to move upward along the positioning rod, and the top cone is separated from the sealing filler. Under the action of the pressure in the cavity, the liquid is discharged from the device through the discharge pipe. When the buoyancy of the floating plate and the top cone is less than their own gravity, the top cone drives the floating plate and the top cone to move downward along the positioning rod, and the top cone is combined with the sealing filler, and the liquid cannot be discharged from the device, realizing the automatic control of the liquid level by the device; at the same time, with the reciprocating motion of the floating plate and the top cone in the liquid cavity, the speed and efficiency of gas-liquid separation are improved, and the rapid separation of gas and liquid is realized.

[0025] In summary, the above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereto. All equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification are within the scope covered by the patent of the present invention.

Claims

1. A mechanical gas-liquid separation and liquid level automatic control device for a SPE differential pressure water electrolysis system, comprising a cylinder, characterized in that: The cylinder is a vertical cylindrical structure, the upper end of the cylinder is fixedly connected to a first elliptical seal, the first elliptical seal is provided with an exhaust pipe connected to the inside of the cylinder; the lower end of the cylinder is fixedly connected to a second elliptical seal, the second elliptical seal is provided with a liquid discharge pipe connected to the inside of the cylinder; the side wall of the cylinder is provided with a gas and liquid inlet pipe connected to the inside of the cylinder; A floating plate is provided in the cylinder, and a plugging piece that cooperates with the pipe mouth of the drainage pipe is connected below the floating plate; the floating plate is formed into a structure that cooperates with the cylinder, and the floating plate can drive the plugging piece below to move axially along the cylinder as the liquid level in the cylinder changes, thereby opening or closing the drainage pipe.

2. The device according to claim 1, characterized in that: The cylinder body is divided into an air cavity and a liquid cavity and is made of a seamless steel pipe.

3. The device according to claim 1, characterized in that: The cylinder is provided with a positioning rod fixing plate, which matches the cross-sectional size of the cylinder and is fixedly connected to the inner wall of the cylinder; the positioning rod fixing plate is fixedly penetrated by a plurality of positioning rods at a position avoiding the center of a circle, and the plurality of positioning rods are arranged parallel to the central axis of the cylinder.

4. The device according to claim 3, characterized in that: A ball slider is sleeved on the positioning rod, and the ball slider is connected to the positioning rod by an overfitting manner; the outside of the ball slider is a floating plate, and the floating plate is connected to the ball slider by an interference fit.

5. The device according to claim 3, characterized in that: The position of the gas-liquid inlet pipe is located below the positioning rod fixing plate.

6. The device according to claim 3, characterized in that: The positioning rod fixing plate is provided with an air vent, and the floating plate is provided with a water hole.

7. The device according to claim 1, characterized in that: A sealing base is provided at the bottom of the second elliptical head, and the sealing base is fixedly connected to the second elliptical head; a sealing filler and a drain pipe are provided inside the sealing base, and the sealing filler and the drain pipe are connected with the sealing base in an over-fitting manner; the lower part of the sealing base is a locking nut, and the locking nut is threadedly connected to the sealing base.

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