CN113440988A

CN113440988A - Gas-water separator

Info

Publication number: CN113440988A
Application number: CN202110831187.XA
Authority: CN
Inventors: 李丰军; 周剑光; 刘松源
Original assignee: China Automotive Innovation Co Ltd
Current assignee: China Automotive Innovation Co Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2021-09-28
Anticipated expiration: 2041-07-22
Also published as: CN113440988B

Abstract

The invention relates to the technical field of gas-water separation, in particular to a gas-water separator which comprises a shell, a gas collecting pipe and a waterproof structure, wherein the shell is provided with a separation cavity, an inlet and a liquid discharge port which are communicated with the separation cavity, the gas collecting pipe is provided with a gas inlet which is positioned in the separation cavity, the gas inlet is vertically arranged upwards, gas is collected by the gas inlet and is conveyed to gas storage equipment through the gas collecting pipe to complete gas-water separation, the waterproof structure is arranged on the wall of the separation cavity, the waterproof structure is provided with a waterproof surface, the waterproof surface comprises a concave vertex and an outer edge, the vertex is positioned above the outer edge, water attached to the surface of the waterproof surface can be guided to the outer edge from the vertex, and the gas inlet is positioned in the range of the outer edge along the vertical direction.

Description

Gas-water separator

Technical Field

The invention relates to the technical field of gas-water separation, in particular to a gas-water separator.

Background

In the hydrogen fuel system, before hydrogen is fed, the hydrogen in the galvanic pile needs to pass through a gas-water separation system to separate water vapor mixed in the hydrogen, and then the separated gas is collected by a gas collecting pipe and is connected with an ejector or a hydrogen circulating pump through a gas outlet pipe. The gas-water separator in the prior art usually adopts a multiple baffle type structure or a vortex type structure to realize gas-water separation.

The gas-water separator of multiple baffle formula structure sets up multiple baffle at the separation intracavity to multiple baffle is located the route of gas-water mixture, relies on the multiple baffle liquefaction of steam striking, and then blocks mixed steam, and gathers into the liquid drop, because multiple baffle has hindered gas flow, can cause very big pressure loss, is unfavorable for gaseous flow, and then can influence the efficiency of water-gas separation.

The gas-water separator with the vortex structure can lead water vapor to be liquefied on the cavity wall to achieve the effect of gas-water separation by spirally moving a gas-water mixture through the cavity wall of the separation cavity.

However, in the gas-water separator with the vortex-type structure in the prior art, the gas inlet of the gas collecting pipe is usually opened along the vertical upward direction, and water is easily accumulated on the wall of the separation cavity, especially water on the top wall of the separation cavity is easily dropped to the gas inlet, which affects the gas-water separation effect.

Disclosure of Invention

The invention aims to provide a gas-water separator, which prevents water on the top wall of a separation cavity from dripping to a gas inlet of a gas collecting pipe by arranging a waterproof structure above the gas inlet.

In order to achieve the purpose, the invention adopts the following technical scheme:

a gas-water separator comprises an inlet, a liquid outlet, a separation cavity and a gas collecting pipe extending into the separation cavity, wherein the gas inlet of the gas collecting pipe is vertically upward;

waterproof construction set up in the air inlet top, waterproof construction's lower surface is the waterproof face of indent, just waterproof construction's outer fringe size is greater than the diameter of air inlet.

Preferably, the waterproof structure includes adapter rod and waterproof head, the top of adapter rod is fixed in the roof of separation chamber, waterproof head sets up the bottom of adapter rod, waterproof face set up in waterproof head.

Preferably, the waterproof head further comprises a guide surface, the top end of the guide surface is connected to the adapter rod, and the bottom end of the guide surface is connected to the waterproof surface.

Preferably, the gas collecting pipe comprises a first section and a second section which are communicated with each other, the gas inlet is located in the first section, the second section extends into the separation cavity, the diameter of the second section is larger than that of the first section, and the first section is located above the second section.

Preferably, the fixed sleeve of the gas collecting pipe is provided with a flow blocking member, the flow blocking member is in a truncated cone shape or a truncated sphere shape, the flow blocking member is provided with a first end and a second end, the first end is located above the second end, the axis of the flow blocking member is arranged along the vertical direction, the diameter of the first end is smaller than that of the second end, and the first end is flush with the gas inlet.

Preferably, the baffle is frusto-conical and the angle of taper of the baffle is between 45 ° and 60 °.

Preferably, the waterproof surface is a spherical surface.

Preferably, a water blocking structure is arranged on the wall of the separation cavity and used for separating water from the gas-water mixture.

Preferably, the water blocking structure is a PVC net.

Preferably, the extending direction of the inlet is perpendicular to the extending direction of the air inlet, and the height of the air inlet is higher than that of the inlet.

The invention has the beneficial effects that: according to the gas-water separator provided by the invention, the waterproof structure is arranged above the air inlet of the gas collecting pipe, the waterproof structure is provided with the waterproof surface which is arranged in a concave manner, water which is liquefied and attached to the surface of the waterproof surface can be guided to the outer edge of the waterproof surface from the top point of the waterproof surface, and the outer edge of the waterproof surface can cover the air inlet along the vertical direction, so that water drops drip from the outer edge and are not easy to enter the air inlet, and the gas-water separator has a better waterproof effect.

Drawings

FIG. 1 is a sectional view showing the entire structure of a gas-water separator according to the present invention;

FIG. 2 is a structural view of a connecting rod and a water-proof head in the gas-water separator according to the present invention;

FIG. 3 is a schematic diagram showing the distance between the waterproof structure and the air inlet in the gas-water separator according to the present invention;

FIG. 4 is a structural view of a baffle member in the gas-water separator according to the present invention;

FIG. 5 is a top view of a baffle in a gas-water separator according to the present invention;

FIG. 6 is a structural view of a bracket in a gas-water separator according to the present invention.

In the figure:

100. a separation chamber;

1. a housing; 11. a water collection part; 111. an inlet; 12. a water discharge section; 121. a liquid discharge port;

2. a gas collecting pipe; 21. a first stage; 211. an air inlet; 22. a second stage;

3. a waterproof structure; 31. a transfer lever; 32. a waterhead; 321. a waterproof surface; 3211. a vertex; 3212. an outer edge; 322. a guide surface;

4. a flow blocking member; 41. a first end; 42. a second end;

5. a support; 51. mounting holes; 52. a support leg; 53. and (7) connecting the sheets.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the prior art, a gas-water separator is used for separating gas from water, and can be used for separating water vapor from any gas such as oxygen, carbon dioxide and the like. For example, in a hydrogen fuel system, before hydrogen is supplied, water in the hydrogen needs to be separated by a gas-water separator, and the separated hydrogen is sent to a gas storage device for storage.

Specifically, as shown in fig. 1 and fig. 2, the embodiment provides a gas-water separator, which includes a housing 1 and a gas collecting pipe 2, the housing 1 has a separation chamber 100, and an inlet 111 and a liquid outlet 121 which are communicated to the separation chamber 100, a gas-water mixture is discharged from the inlet 111 into the separation chamber 100 under high pressure and rotates in the separation chamber 100 at high speed, during the rotation, water vapor is made to adhere to the surfaces of the chamber wall of the separation chamber 100 and the components inside the separation chamber 100 and is liquefied into water droplets, and the water droplets flow out of the liquid outlet 121, and a water valve is disposed at the liquid outlet 121 for controlling the flow rate of the discharged water. The gas collecting pipe 2 penetrates through the shell 1, the gas collecting pipe 2 is provided with a gas inlet 211 located in the separation cavity 100, the gas inlet 211 is vertically arranged upwards, gas is collected by the gas inlet 211 and is transported to gas storage equipment through the gas collecting pipe 2, and a gas valve is arranged at an exhaust port of the gas collecting pipe 2 and used for controlling the exhaust amount. In the prior art, when water accumulated on the top wall of the separation chamber 100 drops, the water is easy to drop into the air inlet 211 below, and the effect of gas-water separation is affected.

To this end, the gas-water separator that this embodiment provided still includes waterproof construction 3, waterproof construction 3 sets up in the chamber wall of separation chamber 100, waterproof construction 3 has waterproof face 321, waterproof face 321 includes apex 3211 and outer fringe 3212 of indent, apex 3211 is located the top of outer fringe 3212, the attached water of waterproof face 321 surface can flow to outer fringe 3212 from apex 3211 under the effect of self gravity, the water droplet that gathers at waterproof face 321 and the water droplet that drips to waterproof construction 3, will only drip from outer fringe 3212, there is not water droplet in the outer fringe 3212 scope. Further, the air inlet 211 is located within the outer edge 3212 in the vertical direction. That is, in the vertical direction, the air inlet 211 is completely covered by the waterproof surface 321, so that the air inlet 211 is shielded below the waterproof surface 321, further ensuring that water does not drip into the air inlet 211.

The waterproof surface 321 can be a spherical surface, a conical surface, or a polygonal pyramid surface. The waterproof surface 321 may also be an arc surface, and it is understood that when the waterproof surface 321 is an arc surface, the waterproof surface 321 has a plurality of vertexes, and the vertexes are closely connected and connected in a line. In this embodiment, the waterproof surface 321 is preferably a spherical surface, the spherical surface has an optimal guiding effect on water, and there is no turning point on the spherical surface, so that water is not easily dropped in the process of flowing on the waterproof surface 321.

Specifically, the extending direction of the inlet 111 is perpendicular to the extending direction of the inlet 211, and the height of the inlet 211 is higher than that of the inlet 111, so that on one hand, the length of the moving path of the gas in the separation chamber 100 can be increased, the gas can be kept in the separation chamber 100 for a longer time, and the separation effect can be ensured. On the other hand, water droplets dripping from the wall of the separation chamber 100 are not easily carried by the airflow directly into the air inlet 211, compared to when the air inlet 211 is at a lower height than the inlet 111.

Specifically, the chamber wall of separation chamber 100 is provided with the structure that blocks water, can effectively increase the area of contact when moving around the chamber wall of separation chamber 100 with the air-water mixture, and the liquefied effect of reinforcing steam, and then promote the effect of gas-water separation. The gas-water separator that this embodiment provided is provided with the structure that blocks water through the chamber wall at separation chamber 100, can effectively reduce the pressure loss that admits air, guarantees the gas-water separation effect. Specifically, the structure that blocks water is the PVC net, and the PVC net has good moisture-proof and corrosion resistance, and is not fragile, and the PVC net has been laid to the chamber wall of separation chamber 100, and water in the air-water mixture will be blocked by the network structure of PVC net, flows to leakage fluid dram 121 along the interior wall of separation chamber 100 afterwards, and further, PVC net accessible glue is pasted on the chamber wall of separation chamber 100, need not additionally to set up the mounting, or uses annular clamp to be fixed in the chamber wall of separation chamber 100 with the PVC net for PVC net is connected more firmly with the chamber wall of separation chamber 100. In other embodiments, the water blocking structure may also be a protrusion structure protruding from the cavity wall of the accommodating cavity.

In particular, the separation chamber 100 has an annular side wall, the centre line of which coincides with the centre line of the inlet 211, the direction of extension of the inlet 111 being tangential to the circumferential direction of the annular side wall. So set up, the gas-water mixture that gets into separation chamber 100 will be around the high-speed rotation of the circumferencial direction of separation chamber 100, avoids gas collecting pipe 2 to obstruct and admits air, can further effectively reduce the pressure loss of admitting air, guarantees the gas-water separation effect.

Specifically, casing 1 of moisture separator includes water collection part 11 and drain 12, and water collection part 11 spiro union is in drain 12, and water collection part 11 and drain 12 enclose and establish the cavity, and water collection part 11 and drain 12 easy dismounting are convenient for maintain the internals. Specifically, water collecting portion 11 is located above water discharging portion 12, inlet 111 is provided in water collecting portion 11, waterproof structure 3 is provided in water collecting portion 11, and liquid discharge port 121 is provided at the lower end of water discharging portion 12. The gas collecting pipe 2 penetrates through the water discharging part 12, and the gas collecting pipe 2 and the water discharging part 12 are provided with O-shaped rings for sealing, so that the air tightness of the separation cavity 100 is improved.

Specifically, the separation chamber 100 has an upper portion and a lower portion, the upper portion is cylindrical, the lower portion is funnel-shaped, the inlet 111 is communicated with the upper portion, and the liquid discharge port 121 is disposed at the bottom of the lower portion, which is beneficial to collecting water.

Optionally, as shown in fig. 2, the waterproof structure 3 includes an adapter rod 31 and a waterproof head 32, the top end of the adapter rod 31 is fixed to the top wall of the separation chamber 100, the waterproof head 32 is disposed at the bottom end of the adapter rod 31, a waterproof surface 321 is disposed in the waterproof head 32, further, in this embodiment, the adapter rod 31 is screwed to the chamber wall of the separation chamber 100, the waterproof head 32 is screwed to the adapter rod 31, and the waterproof head 321 is disposed on the waterproof head 32, and the adapter rod 31 with different lengths and specifications can be selected according to actual conditions, or the waterproof heads 32 with different sizes, and further the distance between the waterproof surface 321 and the air inlet 211 can be adjusted, and different coverage degrees are provided, so that the waterproof structure has a wide application range. In other embodiments, the adapter rod 31 and the top wall of the separation chamber 100 may be connected by using a fixing member such as a bolt as needed, so that the connection is more stable, or a socket is formed in the wall of the separation chamber 100, the adapter rod 31 is plugged into the socket, and no other additional component is needed, and the adapter rod 31 and the waterproof head 32 may also be connected by using a bolt or a socket, which is not limited herein.

Alternatively, as shown in fig. 3, the outer edge 3212 and the air inlet 211 are both circular, the center line of the outer edge 3212 coincides with the center line of the air inlet 211, the difference between the radius of the outer edge 3212 and the radius of the air inlet 211 is L1, the perpendicular distance between the outer edge 3212 and the air inlet 211 is L2, and L1 and L2 should be increased when the flow rate of the air flowing into the air inlet 211 is faster. It can be understood that the gas in the separation chamber 100 will eventually flow to the gas inlet 211, so that the direction of the gas flow at the gas inlet 211 is toward the gas inlet 211, and when water drops from the outer edge 3212, the water will move toward the gas inlet 211 under the blowing of the gas flow, L1 and L2 should be increased, and the water at the outer edge 3212 will not be carried by the gas flow and fall into the gas inlet 211 during the process of freely dropping to the height of the gas inlet 211. In this embodiment L1 is 2.5-3mm, L2 is 5-10mm, specifically L1 is set to 2.5mm, 3mm, 3.5mm, 4mm or 5mm, and L2 is set to 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm or 10 mm.

Optionally, the waterproof head 32 further has a guide surface 322, the guide surface 322 is connected to the adapter rod 31 at the top end and connected to the outer edge 3212 at the bottom end, and the guide surface 322 can guide water condensed on its surface or dripping along the adapter rod 31 to the outer edge 3212, preventing water from accumulating on the adapter rod 31.

Optionally, the outer diameter of the adapter rod 31 is smaller than the outer diameter of the waterproof head 32, so that the area of the peripheral surface of the adapter rod 31 is small, water formed on the surface of the adapter rod 31 is less, the amount of water dripping from the waterproof surface 321 is reduced, the phenomenon that air and water are mixed twice due to overlarge water amount is avoided, the adapter rod is light in weight, the adapter rod is easier to mount and dismount, and manufacturing materials are saved.

As an alternative, the waterproof structure 3 is a groove formed in the wall of the separation chamber 100, the waterproof surface 321 is a groove wall of the groove, and other additional components are not required to be added, and the distance between the air inlet 211 and the waterproof surface 321 is only required to be adjusted to control the flow velocity of the air flow entering the air separator to achieve a good air-water separation effect, so that the air-water separator has a simpler structure.

Specifically, the gas collecting pipe 2 includes a first section 21 and a second section 22 which are communicated with each other, the gas inlet 211 is located at the first section 21, the second section 22 is arranged in the casing 1 in a penetrating manner, the diameter of the second section 22 is larger than that of the first section 21, a step surface is formed at the joint of the first section 21 and the second section 22, the direction of the inflection point of the joint of the second section 22 and the first section 21 is changed when the condensed water on the peripheral surface of the second section 22 moves upwards under the action of the gas flow, the flow direction of the gas flow faces towards the gas inlet 211, the influence on the step surface is reduced, and the water is not easily blown upwards by the gas flow.

Specifically, as shown in fig. 4 and 5, the air inlet 211 is sleeved with the flow blocking member 4, the flow blocking member 4 is screwed to the air inlet 211, the installation and the disassembly are convenient, the flow blocking member 4 extends outwards along the edge of the air inlet 211, the flow blocking member 4 is in a truncated cone shape or a truncated sphere shape, in this embodiment, the flow blocking member 4 is in a truncated sphere shape, the diameter of the first end 41 of the flow blocking member 4 is smaller than that of the second end 42, and the first end 41 of the flow blocking member 4 is flush with the edge of the air inlet 211. It can be understood that, since the gas finally enters the gas inlet 211, under the action of the gas flow entering the gas inlet 211, the water drops condensed on the outer peripheral surface of the gas collecting pipe 2 and on the portion adjacent to the gas inlet 211 easily flow toward the gas inlet 211 while overcoming the gravity under the carrying of the gas flow, and the water condensed on the edge of the gas inlet 211 and on the spherical surface can effectively flow along the spherical surface to the edge to slide down by providing the flow blocking member 4 in the shape of a truncated sphere.

Specifically, as a preferable aspect of the present embodiment, the flow blocking member 4 has a truncated cone shape, which is easy to process, the axis of the flow blocking member 4 is arranged in a vertical direction, even if the water liquefied at the air inlet 211 drops along the tapered surface of the flow blocking member 4, further, the flow blocking member 4 may have a truncated cone shape or a truncated pyramid shape, the angle of the cone of the flow blocking member 4 is between 45 ° and 60 °, the angle of the cone of the flow blocking member 4 is inversely related to the air flow velocity of the air introduced through the air inlet 211, and increasing the angle of the cone is equivalent to decreasing the above L1, in which the water does not move upward along the surface of the flow blocking member 4 with the air flow, and preferably, the angle of the cone is 45 °, 50 °, 55 °, or 60 °, which is excellent in the flow blocking effect.

Specifically, as shown in fig. 6, the gas-water separation device further includes a mounting bracket 5 disposed on a side wall of the separation chamber 100, a mounting hole 51 is formed in the mounting bracket 5, and the gas collecting tube 2 penetrates through the mounting hole 51 to limit a relative position of the gas collecting tube 2 in the separation chamber 100, so as to prevent the gas collecting tube 2 from shaking to change a position under the influence of an air flow, thereby affecting the gas-water separation and gas collection effect. The mounting bracket 5 is provided with a plurality of mounting legs 52, and any two spaced legs 52 and the wall of the separation chamber 100 enclose an opening, so that liquid water in the wall of the separation chamber 100 can flow to the liquid discharge port 121 through the opening. The mounting legs 52 are provided with connecting pieces which are connected to the chamber wall of the separation chamber 100, in this embodiment, positioning holes may be formed in the connecting pieces, and the connecting pieces are fastened to the chamber wall of the separation chamber 100 by fixing members.

It should be understood that the above-described 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. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A gas-water separator comprises an inlet (111), a liquid outlet (121), a separation cavity (100) and a gas collecting pipe (2) extending into the separation cavity (100), wherein a gas inlet (211) of the gas collecting pipe (2) is vertically upward, and the gas-water separator is characterized by further comprising a waterproof structure (3);

waterproof construction (3) set up in air inlet (211) top, the lower surface of waterproof construction (3) is concave waterproof face (321), just outer fringe (3212) size of waterproof construction (3) is greater than the diameter of air inlet (211).

2. The gas-water separator according to claim 1, wherein the waterproof structure (3) comprises an adapter rod (31) and a waterproof head (32), the top end of the adapter rod (31) is fixed on the top wall of the separation cavity (100), the waterproof head (32) is arranged at the bottom end of the adapter rod (31), and the waterproof surface (321) is arranged on the waterproof head (32).

3. Gas-water separator according to claim 2, characterized in that the waterproof head (32) also has a guide surface (322), the top end of the guide surface (322) being connected to the adapter rod (31), the bottom end of the guide surface (322) being connected to the waterproof surface (321).

4. The gas-water separator according to claim 1, wherein the gas collecting pipe (2) comprises a first section (21) and a second section (22) which are communicated with each other, the gas inlet (211) is positioned at the first section (21), the second section (22) extends into the separation cavity (100), the diameter of the second section (22) is larger than that of the first section (21), and the first section (21) is positioned above the second section (22).

5. The gas-water separator according to claim 1, wherein the gas collecting pipe (2) is fixedly sleeved with a flow blocking member (4), the flow blocking member (4) is in a truncated cone shape or a truncated spherical shape, the flow blocking member (4) is provided with a first end (41) and a second end (42), the first end (41) is located above the second end (42), the axis of the flow blocking member (4) is arranged along a vertical direction, the diameter of the first end (41) is smaller than that of the second end (42), and the first end (41) is flush with the gas inlet (211).

6. The gas-water separator according to claim 5, characterized in that the baffle (4) is frusto-conical, and the angle of the cone of the baffle (4) is between 45 ° and 60 °.

7. Gas-water separator according to any of claims 1-6, characterized in that the waterproof surface (321) is spherical.

8. The gas-water separator according to any one of claims 1-6, characterized in that the wall of the separation chamber (100) is provided with a water-blocking structure for separating water from the gas-water mixture.

9. The gas-water separator according to claim 8, wherein said water-blocking structure is a PVC net.

10. Gas-water separator according to any of claims 1-6, characterized in that the extension direction of the inlet (111) is perpendicular to the extension direction of the gas inlet (211), and the height of the gas inlet (211) is higher than the height of the inlet (111).