CN112742142A - Continuous automatic drainage device of high-pressure gas-liquid separator - Google Patents
Continuous automatic drainage device of high-pressure gas-liquid separator Download PDFInfo
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- CN112742142A CN112742142A CN202011438259.6A CN202011438259A CN112742142A CN 112742142 A CN112742142 A CN 112742142A CN 202011438259 A CN202011438259 A CN 202011438259A CN 112742142 A CN112742142 A CN 112742142A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
The invention discloses a continuous automatic drainage device of a high-pressure gas-liquid separator, which comprises a first cavity and a second cavity which are communicated up and down, wherein a floating ball is arranged in the first cavity, a drainage valve is arranged in the second cavity, the drainage valve is connected with the floating ball, the top of the drainage valve is provided with a valve core, the valve core is arranged at the joint of the first cavity and the second cavity, the bottom of the drainage valve forms a sealing structure, the sealing structure divides the second cavity into an upper cavity and a lower cavity, and the floating ball floats up and down to drive the drainage valve to move up and down in the upper cavity in a limited manner; the upper cavity is connected with a water outlet; the lower cavity is communicated with the first cavity. The invention has simple structure, and the lower cavity and the first cavity are communicated through the pressure guide pipe, so that the pressures applied to the top and the bottom of the drain valve are approximately equal, the directions are opposite, the forces are mutually offset, the downward pressing force generated by high pressure difference on the valve core is overcome, and the floating resistance of the floating ball is greatly reduced.
Description
Technical Field
The invention relates to the technical field of gas-liquid separation, in particular to a continuous automatic drainage device of a high-pressure gas-liquid separator.
Background
The gas-liquid separator is a device for separating gas and liquid mixture and realizing separate discharge of the gas and the liquid. In the industry of hydrogen and oxygen production by water electrolysis, high-pressure hydrogen or oxygen generated by an electrolytic cell carries a part of moisture, the moisture needs to be conveyed into a gas-liquid separator for water-gas separation, then dry gas is conveyed out, and the separated moisture is discharged out of the separator and is recovered. The whole separation process is in a high-pressure state, and the device for collecting the separated water is in a normal-pressure state, so that how the separator can stably and efficiently discharge the water under the high pressure difference state is very important for the good operation of the whole system.
The continuous automatic drainage technology of the existing gas-liquid separator generally utilizes the buoyancy effect of a hollow and closed floating ball in liquid to float up and down according to the height of the liquid level in the separator, so as to drive a valve core to open and close for drainage. The floating ball is subjected to larger downward pressure due to the high pressure difference, and the buoyancy of the floating ball is difficult to overcome the pressure to drive the valve rod to float.
Disclosure of Invention
The invention aims to provide a continuous automatic drainage device of a high-pressure gas-liquid separator, which solves the problem that floating balls cannot rise due to large pressure difference between the inside and the outside of the separator.
In order to achieve the purpose, the invention provides the following technical scheme:
a continuous automatic drainage device of a high-pressure gas-liquid separator comprises a first cavity and a second cavity which are communicated up and down, wherein a floating ball is arranged in the first cavity, a drainage valve is arranged in the second cavity and connected with the floating ball, a valve core is arranged at the top of the drainage valve and arranged at the joint of the first cavity and the second cavity, a sealing structure is formed at the bottom of the drainage valve and divides the second cavity into an upper cavity and a lower cavity, and the floating ball floats up and down to drive the drainage valve to move up and down in the upper cavity in a limited manner; the upper cavity is connected with a water outlet; the lower cavity is communicated with the first cavity.
As a further scheme of the invention: the drain valve comprises a valve core, a valve rod and a valve rod head which are integrally connected, wherein the valve core is of a circular truncated cone structure with a large upper part and a small lower part, and the maximum outer diameter of the circular truncated cone structure is larger than the inner diameter of the second cavity.
As a further scheme of the invention: the sealing structure comprises a valve rod head and an elastic diaphragm abutting against the bottom of the valve rod head, the elastic diaphragm is arranged along the radial direction of the second cavity, and the periphery of the elastic diaphragm is fixedly connected with the second cavity; the outer diameter of the valve rod head is smaller than the inner diameter of the second cavity.
As a further scheme of the invention: the sealing structure is a valve rod head, and the outer diameter of the valve rod head is equal to the inner diameter of the second cavity.
As a further scheme of the invention: the elastic membrane is made of stainless steel.
As a further scheme of the invention: and a limiting block (8) for limiting the upward displacement of the drain valve is fixedly connected to the inner wall of the upper cavity.
As a further scheme of the invention: the limiting block is of an annular structure, and the periphery of the valve rod is sleeved with the annular structure.
As a further scheme of the invention: the lower cavity is communicated with the first cavity through a pressure guide pipe.
As a further scheme of the invention: and a connecting rod is arranged at the joint of the drain valve and the floating ball.
Compared with the prior art, the invention has the beneficial effects that: the invention has novel structure, the lower cavity and the first cavity are communicated through the pressure guide pipe, so that the pressures applied to the top and the bottom of the drain valve are approximately equal, the directions are opposite, the forces are mutually offset, the downward pressing force generated by high pressure difference on the valve core is overcome, and the floating resistance of the floating ball is greatly reduced; the elastic diaphragm arranged radially inside the second cavity divides the second cavity into an upper cavity and a lower cavity which are not communicated with each other, the periphery of the elastic diaphragm is fixedly connected with the inner wall of the second cavity to play a role in sealing, the middle part of the elastic diaphragm is upwards bulged along with the pressure difference between the upper end surface and the lower end surface of the elastic diaphragm and keeps an abutting state with the valve rod head moving upwards, pressure is well transferred, and the floating resistance of the drain valve is reduced; the outer diameter of the valve rod head and the inner diameter of the second cavity are arranged in the same size, and the formed piston device is simple in structure, low in production cost and easy to operate; the pressure meter and the air pressure regulating valve which are connected with the first cavity can monitor and regulate the air pressure in the first cavity, and when the air pressure in the cavity exceeds the maximum preset value, the air pressure regulating valve is opened to discharge air outwards, so that the arrangement is reliable; the limiting block can limit the vertical displacement distance of the drain valve and can play a role of a guide rail of axial movement on the drain valve.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the drain valve of the present invention;
FIG. 3 is a schematic structural view of example 2 of the present invention;
FIG. 4 is a schematic diagram of the operation of the present invention;
in the figure: 1-a first cavity, 2-a second cavity, 21-an upper cavity, 22-a lower cavity, 3-a floating ball, 31-a connecting rod, 4-a drain valve, 41-a valve core, 42-a valve rod, 43-a valve rod head, 5-a drain port, 6-an elastic membrane, 7-a pressure guide pipe, 8-a limiting block, 9-a liquid inlet, 10-an exhaust port, 11-an air inlet valve, 12-an air pressure regulating valve, 13-a pressure gauge, 14-a liquid level meter, 15-a conduit, 16-a water tank, 17-a water pump, 18-a first connecting pipe, 19-a vent pipe, 20-an electrolytic tank and 21-a second connecting pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, in an embodiment of the present invention, a continuous automatic drainage device for a high-pressure gas-liquid separator includes a first cavity 1 and a second cavity 2 which are communicated with each other from top to bottom, a floating ball 3 is disposed in the first cavity 1, a drainage valve 4 is disposed in the second cavity 2, the drainage valve 4 is connected to the floating ball 3 through a connecting rod 31, the drainage valve 4 includes a valve core 41, a valve rod 42 and a valve rod head 43 which are integrally connected, the valve core 41 is in a circular truncated cone structure with a large top and a small bottom, and a maximum outer diameter of the circular truncated cone structure is larger than an inner diameter of the second cavity 2. The valve core 41 is arranged at the joint of the first cavity 1 and the second cavity 2, and the valve core 41 limits the downward displacement of the drain valve 4; the periphery of the valve rod 42 is sleeved with a limiting block 8, the limiting block 8 is of an annular structure, the inner diameter of the annular structure is smaller than that of the valve rod head 43, the annular structure is fixedly connected with the inner wall of the second cavity 2, and the limiting block 8 limits upward displacement of the drain valve 4; the joint of the first cavity 1 and the second cavity 2 is provided with a sealing ring to enhance the sealing effect when the valve core 41 falls down, and the valve core 41 can also be configured to be made of soft elastic material to be more tightly abutted against the cavity wall when falling down. The bottom of the valve rod head 43 is abutted with an elastic diaphragm 6, the elastic diaphragm 6 is arranged along the radial direction of the second cavity 2, the periphery of the elastic diaphragm 6 is fixedly connected with the inner wall of the second cavity 2 so as to realize sealing, the elastic diaphragm 6 divides the second cavity 2 into an upper cavity 21 and a lower cavity 22 which are not communicated with each other, and the floating ball 3 floats up and down along with the liquid level change so as to drive the drain valve 4 to move up and down in the upper cavity 21 in a limited manner; the lower cavity 22 is communicated with the first cavity 1 through the pressure guide pipe 7, so that the pressure applied to the valve core 41 is approximately equal to the pressure applied to the valve rod head 43, and the pressure applied to the valve core 41 and the pressure applied to the valve rod head 43 are offset, so that the downward pressing force of the high pressure difference on the valve core 41 is overcome, and the resistance required to be overcome when the floating ball 3 floats upwards is also reduced.
Furthermore, the elastic membrane 6 is made of stainless steel, the thickness of the elastic membrane is about 0.1mm, the elastic membrane has certain elasticity, and the stainless steel is corrosion-resistant, high in strength, pressure-resistant, long in service life and suitable for high-pressure working conditions. The periphery of the elastic diaphragm 6 is fixedly connected with the inner wall of the second cavity 2 to realize sealing, the floating ball 3 floats upwards to drive the valve rod 4 to float upwards, and meanwhile, the middle part of the elastic diaphragm 6 protrudes upwards as the pressure on the lower end surface of the elastic diaphragm 6 is greater than that on the upper end surface; when the floating ball 3 descends, the dead weights of the floating ball 3 and the drain valve 4 and the gas pressure acting on the floating ball and the drain valve 4 push the drain valve 4 to move downwards, and the middle part of the elastic membrane 6 is pressed back to the original position. The water pressure is transmitted to the valve rod head 43 through the deformation generated by the elastic diaphragm 6, and no upward resistance is additionally generated on the drain valve 4 in the process.
Further, the outer diameter of the valve rod head 43 is smaller than the inner diameter of the second cavity 2, and the valve rod head 43 does not contact with the inner wall of the second cavity 2 when the drain valve 4 floats, so that the upward movement resistance is reduced.
Further, the upper cavity 21 is connected with a water outlet 5; the drain port 5 is connected to a water tank 16 through a pipe 15, and water discharged from the drain port 5 flows into the water tank 16 and is recycled. The water tank 16 is connected with the electrolytic bath 20 through a first connecting pipe 18, and a water pump 17 is connected in series on the first connecting pipe. A second connecting pipe 21 for guiding and electrolyzing the moisture oxygen is connected between the electrolytic cell 20 and the water tank 16; the top of the water tank 16 is provided with a vent pipe 19 for discharging oxygen.
Further, the first cavity 1 is connected with a pressure gauge 13, and the pressure gauge 13 monitors the air pressure in the first cavity 1 in real time; the top of the first cavity 1 is provided with a gas-liquid inlet 9 and an exhaust port 10, the exhaust port 10 is connected with a gas pressure regulating valve 12, and the signal output end of the pressure gauge 13 is connected with the gas pressure regulating valve 12; when the air pressure in the first cavity 1 is smaller than the preset value, the pressure gauge 13 sends a closing signal to the air pressure regulating valve 12 to stop exhausting, so that the air pressure in the first cavity 1 is kept constant. The gas-liquid inlet 9 is connected with the electrolytic bath 20, and an air inlet valve 11 is arranged in front of the gas-liquid inlet 9 and the electrolytic bath 20.
It should be noted that, when the floating ball 3 floats upwards to drive the drain valve 4 to move upwards, because the lower cavity 22 is communicated with the first cavity 1, the pressure in the lower cavity 22 is approximately equal to the pressure in the first cavity 1, and the first cavity 1 is in a high-pressure environment, the pressure on the lower end surface of the elastic membrane 6 is much greater than the pressure on the upper end surface of the elastic membrane 6, when the drain valve 4 moves upwards, the elastic membrane 6 is driven by a high pressure difference, and the middle part of the elastic membrane 6 protrudes upwards, that is, the middle part of the elastic membrane 6 and the valve rod head 43 are always in an abutting state; when the drain valve 4 falls down, the middle part of the elastic diaphragm 6 is pressed back downwards. When the floating ball 3 rises to a certain position, the valve core 41 opens the water discharging amount which is equal to the water amount entering the first cavity 1, the water inlet and outlet are in a balanced state, and the water discharging valve 4 is in a continuous water discharging state.
Example 2
As shown in fig. 2 to 3, in the embodiment of the present invention, the continuous automatic drainage device for the high-pressure gas-liquid separator includes a first cavity 1 and a second cavity 2 which are communicated with each other from top to bottom, a floating ball 3 is disposed in the first cavity 1, a drainage valve 4 is disposed in the second cavity 2, the drainage valve 4 is connected to the floating ball 3 through a connecting rod 31, the drainage valve 4 includes a valve core 41, a valve rod 42 and a valve rod head 43 which are integrally connected, the valve core 41 is in a circular truncated cone structure with a large top and a small bottom, and a maximum outer diameter of the circular truncated cone structure is smaller than an inner diameter of the second cavity 2. The circular truncated cone structure is arranged at the joint of the first cavity 1 and the second cavity 2, and the valve core 41 limits the downward displacement of the drain valve 4; the periphery of the valve rod 42 is sleeved with a limiting block 8, the limiting block 8 is of an annular structure, the inner diameter of the annular structure is smaller than that of the valve rod head 43, the annular structure is fixedly connected with the inner wall of the second cavity 2, and the limiting block 8 limits upward displacement of the drain valve 4; in this embodiment, the installation height of the limiting block 8 determines that the drain valve 4 can only make a slight vertical displacement; the outer diameter of the valve rod head 43 is equal to the inner diameter of the second chamber 2, i.e. a piston structure is formed between the valve rod head 43 and the second chamber 2. The piston structure can realize the sealing effect, has simple structure and easy operation, and reduces the production cost. The valve rod head 43 divides the second cavity 2 into an upper cavity 21 and a lower cavity 22 which are not communicated with each other, and the floating ball 3 floats up and down along with the liquid level change so as to drive the drain valve 4 to move up and down in the upper cavity 21 in a limited manner; the lower cavity 22 is communicated with the first cavity 1 through the pressure guide pipe 7, so that the pressure applied to the valve core 41 is approximately equal to the pressure applied to the valve rod head 43, the directions of the pressure applied to the valve core 41 and the pressure applied to the valve rod head 43 are opposite and offset, downward pressing force generated by high pressure difference on the valve core 41 is overcome, and resistance required to be overcome when the floating ball 3 floats upwards is also reduced.
Further, the upper cavity 21 is connected with a water outlet 5; the drain port 5 is connected to a water tank 16 through a pipe 15, and water discharged from the drain port 5 flows into the water tank 16 and is recycled. The water tank 16 is connected with the electrolytic bath 20 through a first connecting pipe 18, and a water pump 17 is connected in series on the first connecting pipe. A second connecting pipe 21 for guiding and electrolyzing the moisture oxygen is connected between the electrolytic cell 20 and the water tank 16; the top of the water tank 16 is provided with a vent pipe 19 for discharging oxygen.
Further, the first cavity 1 is connected with a pressure gauge 13, and the pressure gauge 13 monitors the air pressure in the first cavity 1 in real time; the top of the first cavity 1 is provided with a gas-liquid inlet 9 and an exhaust port 10, the exhaust port 10 is connected with a gas pressure regulating valve 12, and the signal output end of the pressure gauge 13 is connected with the gas pressure regulating valve 12; when the air pressure in the first cavity 1 is smaller than the preset value, the pressure gauge 13 sends a closing signal to the air pressure regulating valve 12 to stop exhausting, so that the air pressure in the first cavity 1 is kept constant. The gas-liquid inlet 9 is connected with the electrolytic bath 20, and an air inlet valve 11 is arranged between the gas-liquid inlet 9 and the electrolytic bath 20.
In use of the invention, as shown in figure 4, the water pump 17 feeds water from the water tank 16 via the first connection pipe 18 into the electrolytic cell 20, and part of the water is electrolyzed in the electrolytic cell 20 to produce hydrogen and fed into the first chamber 1 through the inlet valve 11. Oxygen and moisture generated by electrolysis are circulated back to the water tank 16 through the second connection pipe 21, and the oxygen is discharged through the vent pipe 19. The electrolytic cell 20 continuously generates hydrogen and carries a part of moisture to enter the first cavity 1, the moisture sinks to the bottom of the first cavity 1 under the action of gravity, the hydrogen is controlled by the air pressure regulating valve 12 and the pressure gauge 13, the air pressure regulating valve 12 is opened after the pressure reaches a preset value, and the dry hydrogen is discharged from the exhaust port 10. When the liquid level in the first cavity 1 rises to a certain liquid level, the floating ball 3 floats upwards and drives the drain valve 4 to move upwards, and the valve core 41 is opened until the valve rod head 43 is abutted to the limiting block 8; the water in the first chamber 1 is forced into the upper chamber 21 and flows from the drain opening 5 through the conduit 15 to be collected in the water tank 16.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (9)
1. A continuous automatic drainage device of a high-pressure gas-liquid separator comprises a first cavity (1) and a second cavity (2) which are communicated up and down, wherein a floating ball (3) is arranged in the first cavity (1), a drainage valve (4) is arranged in the second cavity (2), and the drainage valve (4) is connected with the floating ball (3), and is characterized in that a valve core (41) is arranged at the top of the drainage valve (4), the valve core (41) is arranged at the joint of the first cavity (1) and the second cavity (2), a sealing structure is formed at the bottom of the drainage valve (4), the sealing structure divides the second cavity (2) into an upper cavity (21) and a lower cavity (22), and the floating ball (3) floats up and down to drive the drainage valve (4) to move up and down in the upper cavity (21) in a limited manner; the upper cavity (21) is connected with a water outlet (5); the lower cavity (22) is communicated with the first cavity (1).
2. The continuous automatic drainage device of the high-pressure gas-liquid separator according to claim 1, wherein the drainage valve (4) comprises a valve core (41), a valve rod (42) and a valve rod head (43) which are integrally connected, the valve core (41) is in a circular truncated cone structure with a large upper part and a small lower part, and the maximum outer diameter of the circular truncated cone structure is larger than the inner diameter of the second cavity (2).
3. The continuous automatic drainage device of the high-pressure gas-liquid separator according to claim 2, wherein the sealing structure comprises a valve rod head (43) and an elastic diaphragm (6) abutting against the bottom of the valve rod head (43), the elastic diaphragm (6) is arranged along the radial direction of the second cavity (2), and the periphery of the elastic diaphragm (6) is fixedly connected with the second cavity (2); the outer diameter of the valve rod head (43) is smaller than the inner diameter of the second cavity (2).
4. The continuous automatic drainage device of the high-pressure gas-liquid separator according to claim 2, wherein the sealing structure is a valve rod head (43), and the outer diameter of the valve rod head (43) is equal to the inner diameter of the second cavity (2).
5. The continuous automatic drainage device of the high-pressure gas-liquid separator as claimed in claim 3, wherein the elastic diaphragm (6) is made of stainless steel.
6. The continuous automatic drainage device of the high-pressure gas-liquid separator according to claim 1, wherein a limiting block (8) for limiting the upward displacement of the drainage valve (4) is fixedly connected to the inner wall of the upper cavity (21).
7. The continuous automatic drainage device of the high-pressure gas-liquid separator as claimed in claim 6, wherein the limiting block (8) is an annular structure, and the annular structure is sleeved on the periphery of the valve rod (42).
8. The continuous automatic drainage device of the high-pressure gas-liquid separator according to claim 1, wherein the lower cavity (22) is communicated with the first cavity (1) through a pressure guide pipe (7).
9. The continuous automatic drainage device of the high-pressure gas-liquid separator according to claim 1, wherein a connecting rod (31) is arranged at the joint of the drainage valve (4) and the floating ball (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438259.6A CN112742142B (en) | 2020-12-10 | 2020-12-10 | Continuous automatic drainage device of high-pressure gas-liquid separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438259.6A CN112742142B (en) | 2020-12-10 | 2020-12-10 | Continuous automatic drainage device of high-pressure gas-liquid separator |
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| Publication Number | Publication Date |
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| CN112742142A true CN112742142A (en) | 2021-05-04 |
| CN112742142B CN112742142B (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011438259.6A Active CN112742142B (en) | 2020-12-10 | 2020-12-10 | Continuous automatic drainage device of high-pressure gas-liquid separator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4323004A1 (en) * | 1993-07-11 | 1994-03-24 | Tepcon Eng Gmbh | Condensation remover for pressure systems - has smaller sized float and larger sized outlet opening allowing removal of condensation containing larger dirt particles. |
| CN202252808U (en) * | 2011-09-21 | 2012-05-30 | 吴培森 | Drain valve for high-pressure natural gas |
| CN203453759U (en) * | 2013-09-12 | 2014-02-26 | 苏州市红日生物设备有限公司 | Automatic vacuum drainage device |
| CN105709524A (en) * | 2016-02-19 | 2016-06-29 | 浙江省机电技师学院 | Automatic water drainage device for gas and water separation |
| CN205842199U (en) * | 2016-06-24 | 2016-12-28 | 湖南省长康实业有限责任公司 | A kind of compressed air floating ball hydrophobic water valve |
-
2020
- 2020-12-10 CN CN202011438259.6A patent/CN112742142B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4323004A1 (en) * | 1993-07-11 | 1994-03-24 | Tepcon Eng Gmbh | Condensation remover for pressure systems - has smaller sized float and larger sized outlet opening allowing removal of condensation containing larger dirt particles. |
| CN202252808U (en) * | 2011-09-21 | 2012-05-30 | 吴培森 | Drain valve for high-pressure natural gas |
| CN203453759U (en) * | 2013-09-12 | 2014-02-26 | 苏州市红日生物设备有限公司 | Automatic vacuum drainage device |
| CN105709524A (en) * | 2016-02-19 | 2016-06-29 | 浙江省机电技师学院 | Automatic water drainage device for gas and water separation |
| CN205842199U (en) * | 2016-06-24 | 2016-12-28 | 湖南省长康实业有限责任公司 | A kind of compressed air floating ball hydrophobic water valve |
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| CN112742142B (en) | 2022-05-13 |
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