Gas-liquid separator

Abstract

Cooling liquid is contained in a tank body, the gas-liquid separator comprises the tank body, partition assemblies used for dividing the tank body into multiple layers of cavities are arranged in the tank body, the tank body is provided with a gas inlet pipe extending downwards to the lowermost cavity, the cavity located at the uppermost end is connected with an exhaust port, and the exhaust port is connected with a gas outlet. The exhaust port is higher than the liquid level in the uppermost chamber by a certain height; the adjacent cavities are communicated through a first ventilation structure, the first ventilation structure between the nth layer of cavity and the (n-1) th layer of cavity and the first ventilation structure between the nth layer of cavity and the (n + 1) th layer of cavity are located on the two sides of the air inlet pipe respectively, and n is a natural number and is larger than or equal to 2; and a cooling device for cooling the cooling liquid is arranged outside the tank body. According to the air-liquid separator, air-liquid separation can be achieved, air can be cooled more sufficiently in the tank body with the limited volume, black smoke particles can be purified more sufficiently, and the vehicle exposure risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a gas-liquid separator. Background Art

[0002] Military vehicles are mostly powered by diesel engines to ensure adequate power. Diesel exhaust, however, contains large amounts of carbon black particles and chemical fumes, and has a high exhaust temperature, making it easily detectable by visible and infrared reconnaissance satellites. This makes it particularly vulnerable in sparsely populated mountainous areas, significantly reducing the concealment and survivability of military projects.

[0003] In related technologies, military vehicles spray water in the flue to purify and cool the exhaust gas, such as Figure 1 As shown, the exhaust gas emitted by the vehicle enters the flue 100 from the air inlet 300. After the spray pipe 200 in the flue 100 sprays the exhaust gas, the waste liquid is discharged from the drain hole 400 in the flue 100, and the mixture of exhaust gas and water is discharged from the outlet 500. However, due to the large exhaust gas flow rate and high initial temperature, this method cannot ensure that the water and exhaust gas can be fully mixed, resulting in the temperature of the final exhaust gas still being very high, generally still 60℃-70℃. The specific exhaust gas temperature is determined by the length of the flue 100. When the space of the flue 100 is not restricted and is set longer, the exhaust temperature can be lower. If the temperature discharged from the outlet 500 enters Figure 2 The gas is discharged after gas-liquid separation in the ordinary sedimentation type gas-liquid separation tank shown. Since in the ordinary sedimentation type gas-liquid separation tank, the gas overflows from the bottom of the inlet pipe 3 and enters above the liquid level 15 through the shortest path, and then is discharged from the exhaust port 4. The gas and the liquid in the gas-liquid separation tank cannot be fully mixed. The gas discharged from the exhaust port 4 will also be higher than the ambient temperature, and there is a greater risk of exposure. In addition, the discharged gas will still contain large-size black smoke particles.

[0004] Based on this, how to design a new type of gas-liquid separator to perform gas-liquid separation on the gas-liquid mixture discharged from the gas outlet 500 while further reducing the temperature of the exhaust gas and further purifying the large-particle black smoke particles contained in the gas discharged from the gas outlet 500 is a technical problem that technicians in this field urgently need to solve. Utility Model Content

[0005] In response to the problems in the prior art, the purpose of the present utility model is to provide a gas-liquid separator that can not only achieve gas-liquid separation, but also fully cool the gas, thereby reducing the temperature of the gas discharged from the exhaust port, making the temperature of the exhaust gas close to the outdoor atmospheric temperature, and reducing the exposure risk; at the same time, it can also purify the large-particle black smoke particles contained in the gas entering the gas-liquid separator.

[0006] In order to achieve the above object, the technical solution of the utility model is:

[0007] A gas-liquid separator is designed, comprising a tank body, wherein the tank body contains a coolant, and a partition assembly is provided inside the tank body for separating the tank body into multiple layers of chambers, and the tank body is provided with an air inlet pipe extending downward to the chamber of the lowest layer, and the chamber at the uppermost end is connected to an exhaust port, and the exhaust port is higher than the liquid level in the chamber at the uppermost end by a certain height; and adjacent chambers are connected by a first air permeable structure, and the first air permeable structure between the nth layer chamber and the n-1th layer chamber and the first air permeable structure between the nth layer chamber and the n+1th layer chamber are respectively located on both sides of the air inlet pipe, wherein n is a natural number and n≥2; a cooling device is provided outside the tank body for cooling the coolant.

[0008] Furthermore, the partition assembly includes a plurality of partitions arranged in sequence from the upper end to the lower end of the tank body.

[0009] Furthermore, the first breathable structure includes a plurality of first breathable mesh holes opened on the partition.

[0010] Furthermore, each of the partitions is provided with a plurality of second air-permeable mesh holes at one end away from the first air-permeable mesh holes, and the apertures of the second air-permeable mesh holes are smaller than the apertures of the first air-permeable mesh holes.

[0011] Furthermore, a sewage outlet and a liquid outlet are provided at the lower end of the tank body, and both the sewage outlet and the liquid outlet are equipped with switch valves, and the height of the liquid outlet is higher than that of the sewage outlet.

[0012] Furthermore, the cooling device includes a water pump, a filter and a radiator which are connected in sequence. The inlet of the water pump is connected to the outlet of the drain port, and the outlet of the radiator is connected to the water inlet on the upper part of the tank body.

[0013] Furthermore, heat dissipation fins are provided on the outer wall of the tank body.

[0014] Furthermore, the water inlet and the exhaust port are respectively located on both sides of the air inlet pipe.

[0015] Furthermore, the lower end of the air inlet pipe faces the diverter cone installed in the tank body.

[0016] Furthermore, the bottom of the tank body is configured as a funnel-shaped aggregate trough, the sewage outlet is arranged at the bottom of the aggregate trough, the diverter cone is located directly above the aggregate trough, and an annular mesh plate is connected between the diverter cone and the inner wall of the tank body.

[0017] Compared to existing technologies, the gas-liquid separator structure provided by the present invention is unique. After the gas-liquid mixture enters the bottom chamber from the air inlet pipe, it passes through multiple chambers in sequence from bottom to top along an S-shaped path, and is ultimately discharged from the exhaust port at the upper end of the tank body. Because the gas-liquid mixture sequentially mixes with the coolant in multiple chambers along the S-shaped path, the gas-liquid mixture entering the tank body can increase the flow path in the coolant within the tank body, thereby enabling sufficient mixing and contact between the gas and coolant. This not only achieves gas-liquid separation, but also enables more complete cooling of the gas within the limited volume of the tank body, while also purifying most of the large black smoke particles remaining in the filtered gas.

[0018] Therefore, this device can not only achieve gas-liquid separation, but also more fully cool the gas, thereby reducing the temperature of the gas discharged from the tank to close to the outdoor atmospheric temperature. In addition, the large black smoke particles in the exhaust gas are also purified and recovered. As a result, the exhaust gas emitted by military vehicles is ultimately cooler and produces less black smoke, making it less likely to be detected by thermal infrared detectors. This enhances the concealment and survivability of the vehicle, reducing the risk of exposure. At the same time, the low black smoke particles in motor vehicle exhaust will effectively promote natural climate change and the control of atmospheric pollution emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 these drawings without paying any creative work.

[0020] Attachment Figure 1 It is a structural schematic diagram of an exhaust gas spray device in the related art;

[0021] Attachment Figure 2 It is a structural schematic diagram of a gas-liquid separation tank in the related art.

[0022] Attachment Figure 3 This is one of the cross-sectional structural diagrams of a gas-liquid separator provided in an embodiment of the present utility model;

[0023] Attachment Figure 4 This is a second schematic cross-sectional structural diagram of a gas-liquid separator provided in an embodiment of the present utility model.

[0024] Attachment Figure 5 This is a third schematic cross-sectional structural diagram of a gas-liquid separator provided in an embodiment of the present utility model.

[0025] In the figure: 100. Flue, 200. Spray pipe, 300. Air inlet, 400. Drain hole, 500. Air outlet; 1. Drain outlet, 2. Tank body, 3. Air inlet pipe, 4. Exhaust port, 5. Drain outlet, 6. Chamber, 7. Partition, 8. First air permeable mesh, 9. Second air permeable mesh, 10. Diverter cone, 11. Water pump, 12. Filter, 13. Radiator, 14. Water inlet, 15. Liquid level, 16. Heat dissipation fins, 17. Liquid level sensor, 18. Water tank pump, 19. Sewage collecting tank, 20. Annular mesh plate. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] like Figure 3-5 As shown, a gas-liquid separator as a preferred embodiment of the present invention includes a tank body 2, which contains coolant. The tank body 2 is provided with a partition assembly for dividing it into multiple layers of chambers 6, and the tank body 2 is provided with an air inlet pipe 3 extending downward to the chamber 6 of the lowest layer, and the chamber 6 at the uppermost end is connected to an exhaust port 4, which is higher than the liquid level 15 in the chamber 6 at the uppermost end by a certain height, so as to facilitate gas-liquid separation and prevent the coolant from being pressed into the exhaust port 4; and adjacent chambers 6 are connected by a first air permeable structure, the first air permeable structure between the nth layer chamber 6 and the n-1th layer chamber 6, and the first air permeable structure between the nth layer chamber and the n+1th layer chamber are respectively located on both sides of the air inlet pipe 3, wherein n is a natural number, and n≥2; a cooling device for cooling the coolant is provided on the outside of the tank body 2, so as to circulate and cool the coolant in the tank body 2, so that the temperature of the gas discharged from the tank body 2 from the exhaust port 4 is reduced to close to the outdoor atmospheric temperature.

[0028] The above-mentioned tank body 2 can be set to be square or circular, which is not specifically limited here; and the air inlet pipe 3 at its upper end is fixedly connected to the air outlet 500 of the flue 100 to receive the gas-liquid mixture discharged from the flue 100; obviously, since the inner cavity of the tank body 2 is vertically divided into multiple layers of chambers 6 by the partition component, and the multiple layers of chambers 6 are connected by the first air permeable structure, after the gas-liquid mixture enters the bottom layer of chamber 6, the gas passes through multiple chambers 6 from bottom to top and is discharged from the exhaust port 4 to achieve gas-liquid separation; and the liquid remains in the chamber 6 and mixes with the coolant in the chamber 6; wherein, since the first air permeable structure between the nth layer chamber 6 and the n-1th chamber 6 and the first air permeable structure between the nth layer and the n+1th layer are respectively located on both sides of the air inlet pipe 3, the flow path of the gas in the inner cavity of the tank body 2 is S-shaped, which can extend the flow distance of the gas in the coolant, so that the gas and the coolant are fully mixed to achieve the best cooling and dust purification and separation effects.

[0029] When the gas-liquid separator provided by the present invention is used, after the gas-liquid mixture enters the bottom chamber 6 from the intake pipe 3, the gas-liquid mixture has a certain pressure that can overcome the liquid column pressure in the intake pipe 3. The gas-liquid mixture passes through multiple chambers 6 in sequence from bottom to top along an S-shaped path and is finally discharged from the exhaust port 4 at the upper end of the tank body 2. The gas-liquid mixture entering the tank body 2 flows in the coolant contained in the tank body 2. The coolant in this embodiment can be water. Therefore, after the exhaust gas is mixed with water once in the flue 100, it can achieve a secondary mixing contact with water in the tank body 2, thereby achieving secondary cooling of the exhaust gas; at the same time, it also effectively purifies the particulate matter in the settled black smoke. Of course, if some chemical reagents are added to the coolant, other harmful gases in the exhaust gas can also be neutralized and decomposed at this time.

[0030] Therefore, this device can not only achieve gas-liquid separation, but also cool the gas more fully, thereby reducing the temperature of the gas discharged from the tank, making the temperature of the exhaust gas close to the outdoor atmospheric temperature, and at the same time effectively purifying the particulate matter in the settled black smoke, thereby improving concealment and reducing the risk of exposing the vehicle itself; in addition, in certain cases, it can also purify and decompose various harmful gases in the exhaust gas.

[0031] It should be noted that the basic function of the gas-liquid separator in this embodiment is to reduce the gas temperature and purify large particles of black smoke. Together with the spray cooling, it plays the role of primary purification of the exhaust gas. According to the emission requirements, the gas discharged from the exhaust port 4 can be discharged directly or enter the next level of purification device.

[0032] Based on the above embodiment, the partition assembly includes a plurality of partitions 7 arranged sequentially from the upper end to the lower end of the tank body 2. Specifically, the tank body 2 is configured in a square shape, and the partitions 7 are also configured in a square shape to match the cross-section of the inner cavity of the tank body 2. Separation can then be achieved by welding the perimeter of the partitions 7 to the inner wall of the tank body 2. In this embodiment, three partitions 7 are specifically arranged vertically along the tank body 2, and the spacing between adjacent partitions 7 is equal. In other embodiments, the spacing may be unequal.

[0033] Based on the above embodiment, the first breathable structure includes multiple first breathable mesh holes 8 opened on the partition 7; compared with opening a large-sized mesh hole, the multiple first breathable mesh holes 8 set in the present application can increase the resistance of the liquid entering the next chamber 6, which is conducive to the full mixing of the gas and the coolant.

[0034] On the basis of the above embodiment, a plurality of second air-permeable mesh holes 9 are formed at one end of each partition 7 away from the first air-permeable mesh holes 8 , and the aperture of the second air-permeable mesh holes 9 is smaller than the aperture of the first air-permeable mesh holes 8 .

[0035] Specifically, the provision of the second air mesh 9 can help accelerate exhaust, preventing excessive gas flow from pushing liquid out of the exhaust port 4. Since the first air mesh 8 has a larger pore size than the second air mesh 9, the overall gas flow is primarily through the first air mesh 8, with the second air mesh 9 serving as a supplement. It should be noted that the smaller pore size of the second air mesh 9 results in poorer water and gas permeability.

[0036] In addition to the above-mentioned embodiment, the lower end of the tank body 2 is provided with a sewage outlet 1 and a liquid drain outlet 5. Both outlets are equipped with on / off valves or solenoid valves to facilitate periodic manual and automatic drainage of sewage or liquids. The liquid drain outlet 5 is positioned higher than the sewage outlet 1 to prevent the discharge of large amounts of sewage from the bottom during the cooling cycle. After extended use, filtered sewage accumulates in the lower chamber and can be discharged through the sewage outlet 1.

[0037] On the basis of the above embodiment, preferably, the cooling device includes a water pump 11, a filter 12 and a radiator 13 connected in sequence, the inlet of the water pump 11 is connected to the outlet of the drain port 5, and the outlet of the radiator 13 is connected to the water inlet 14 on the upper part of the tank body 2. Driven by the water pump 11, the coolant in the tank body 2 can circulate into the filter 12 for filtration and enter the radiator 13 for cooling. The cooled coolant re-enters the interior of the tank body 2 through the water inlet 14 on the upper part of the tank body 2, thereby cooling the coolant in the tank body 2. In order to achieve a better heat dissipation effect, the radiator 13 can use a radiator with additional cooling capacity, such as a radiator including a compression evaporation condensation system. Preferably, the filter 12 is an intelligent backwash filter, which can automatically backwash and clean the filter after a period of use, so that the filter 12 maintains a good filtering capacity. In addition, a liquid level sensor 17 is provided on the tank body 2, and the water inlet 14 is also connected to the vehicle-mounted water tank through a water tank pump 18. When the coolant needs to be replaced or when the liquid level sensor 17 detects that the water level in the tank body 2 is below the set water level, the water pump tank 18 is automatically or manually opened to replenish the coolant in the tank body 2.

[0038] Based on the above embodiments, Figure 4 As shown, heat dissipation fins 16 are further provided on the outer wall of the tank body 2, so that the tank body 2 has a certain natural heat dissipation capacity during the operation of the vehicle, reducing the burden on the cooling device.

[0039] Based on the above embodiment, the water inlet 14 and the exhaust port 4 are located on either side of the intake pipe 3, respectively. This allows the coolant to flow in the opposite direction to the cooling direction of the gas, and the convection between the two media further enhances the cooling effect. Of course, in other embodiments, the water inlet 14 can also be located in other locations, such as by providing a tee with its two inlets serving as the water inlet 14 and the inlet of the intake pipe 3, respectively.

[0040] For better technical effects, on the basis of the above embodiment, the lower end of the air intake pipe 3 faces the diverter cone 10 installed in the tank body 2; specifically, the diverter cone 10 is conical, which is small at the top and large at the bottom, and the cone angle of the diverter cone 10 is greater than 120 degrees, so that the airflow can only impact the diverter cone as much as possible to achieve uniform airflow distribution; when installed, the tip of the diverter cone 10 is directed toward the center of the lower end of the air intake pipe 3, so that the gas-liquid mixture flowing in from the air intake pipe 3 can be dispersed, the flow rate can be reduced, and it is beneficial to gas-liquid separation.

[0041] Based on the above embodiment, the bottom of the tank body 2 is provided with a funnel-shaped collection trough 19, the sewage outlet 1 is provided at the bottom of the collection trough 19, the diverter cone 10 is located directly above the collection trough 19, and an annular mesh plate 20 is connected between the diverter cone 10 and the inner wall of the tank body 2. The funnel-shaped collection trough 19 facilitates the collection and discharge of dirt particles, and the annular mesh plate 20 is connected between the diverter cone 10 and the inner wall of the tank body 2 to facilitate the entry of dirt particles from the annular mesh plate 20 into the collection trough 19, while also preventing dirt from being swept up when the airflow impacts the diverter cone 10.

[0042] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0043] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0044] The above description of the disclosed embodiments will enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be construed in the widest possible manner consistent with the principles and novel features disclosed herein.

Claims

1. A gas-liquid separator, characterized in that: The invention comprises a tank body (2), wherein the tank body (2) contains a cooling liquid, wherein a partition assembly for partitioning the tank body (2) into multiple layers of chambers (6) is provided in the tank body (2), and an air inlet pipe (3) extending downward to the chamber (6) of the lowest layer is provided in the tank body (2), and the chamber (6) at the uppermost end is connected to an exhaust port (4), and the exhaust port (4) is higher than a certain height of the liquid level (15) in the chamber (6) at the uppermost end; and adjacent chambers (6) are connected through a first air permeable structure, and the first air permeable structure between the nth layer chamber (6) and the n-1th layer chamber (6) and the first air permeable structure between the nth layer chamber (6) and the n+1th layer chamber (6) are respectively located on both sides of the air inlet pipe (3), wherein n is a natural number and n≥2; and a cooling device for cooling the cooling liquid is provided outside the tank body (2).

2. The gas-liquid separator according to claim 1, characterized in that The partition assembly comprises a plurality of partitions (7) sequentially spaced apart from each other from the upper end to the lower end of the tank body (2).

3. The gas-liquid separator according to claim 2, characterized in that The first breathable structure comprises a plurality of first breathable mesh holes (8) opened on the partition (7).

4. The gas-liquid separator according to claim 3, characterized in that A plurality of second air-permeable mesh holes (9) are provided at one end of each partition (7) away from the first air-permeable mesh hole (8), and the aperture of the second air-permeable mesh hole (9) is smaller than the aperture of the first air-permeable mesh hole (8).

5. The gas-liquid separator according to any one of claims 1 to 4, characterized in that: The lower end of the tank body (2) is provided with a sewage outlet (1) and a liquid outlet (5), and both the sewage outlet (1) and the liquid outlet (5) are equipped with switch valves, and the height of the liquid outlet (5) is higher than that of the sewage outlet (1).

6. The gas-liquid separator according to claim 5, characterized in that The cooling device comprises a water pump (11), a filter (12) and a radiator (13) which are connected in sequence, wherein the inlet of the water pump (11) is connected to the outlet of the drain port (5), and the outlet of the radiator (13) is connected to the water inlet (14) at the upper part of the tank body (2).

7. The gas-liquid separator according to claim 6, characterized in that Heat dissipation fins (16) are also provided on the outer wall of the tank body (2).

8. The gas-liquid separator according to claim 6, characterized in that The water inlet (14) and the exhaust port (4) are respectively located on both sides of the air inlet pipe (3).

9. The gas-liquid separator according to claim 5, characterized in that The lower end of the air inlet pipe (3) faces the diverter cone (10) installed in the tank body (2).

10. The gas-liquid separator according to claim 9, characterized in that: The bottom of the tank body (2) is configured as a funnel-shaped aggregate trough (19), the sewage outlet (1) is configured at the bottom of the aggregate trough (19), the diverter cone (10) is located directly above the aggregate trough (19), and an annular mesh plate (20) is connected between the diverter cone (10) and the inner wall of the tank body (2).

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