Inlet air dehydration device

Abstract

The invention provides an air inlet dehydration device which is connected between an intercooler and an engine cylinder, the air inlet dehydration device comprises a separation bin, an air guide pipe is arranged in the separation bin in a penetrating mode, an annular separation cavity is formed between the air guide pipe and the separation bin, and the separation bin is provided with an air inlet and an air outlet; the air inlet is connected with the intercooler through an air inlet pipe, and the two ends of the air guide pipe communicate with the annular separation cavity and the air outlet correspondingly. The air supply pipeline is connected between the air outlet and the engine, and a pressure relief cavity is formed in the end, connected with the engine, of the air supply pipeline. By means of the inlet gas dehydration device, the effect of dehydrating vaporous water and liquid water contained in low-concentration gas can be achieved, and the problems that an engine generates single-cylinder fire, combustion is unstable, and the exhaust temperature is high are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas engines, and in particular to an intake air dehydration device. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and may not constitute prior art.

[0003] The mining of minerals and oil materials below ground often produces a large amount of low-concentration gas. Besides being used to generate electricity for generators, this low-concentration gas is also commonly used to fuel engines that use gas as fuel. However, with existing fuel technologies, low-concentration gas is flammable and explosive. To ensure the safety of low-concentration gas transportation, water mist technology must be used to suppress explosions. Excessive water vapor content causes the low-concentration gas to contain a large amount of gaseous and liquid water after transportation.

[0004] Existing gas engines are not equipped with dehydration devices, resulting in some gaseous water in the gas not being treated before entering the gas engine. After passing through the supercharger's boosting link and the intercooler's cooling link, the gaseous water will condense to form condensed water. Affected by the existing gas engine's pipeline structure, the condensed water will concentrate in a certain cylinder in the gas engine, causing single-cylinder misfire, unstable combustion, high exhaust temperature and other problems, resulting in reduced unit operating efficiency.

[0005] It should be noted that the above technical background is merely provided to provide a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. Simply because these solutions are described in the technical background section of the present invention, it should not be assumed that the above technical solutions are well known to those skilled in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide an intake air dehydration device, which solves the problem in the field of gas engine technology that gaseous water and liquid water contained in low-concentration gas need to be dehydrated.

[0007] The above-mentioned implementation objectives of the present invention are mainly achieved by the following technical solutions:

[0008] The present invention provides an intake air dehydration device connected between an intercooler and an engine cylinder, the intake air dehydration device comprising:

[0009] A separation chamber, wherein an air guide pipe is provided therein, an annular separation chamber is formed between the air guide pipe and the separation chamber, the separation chamber has an air inlet and an air outlet, the air inlet is connected to the intercooler through the air inlet pipe, and the two ends of the air guide pipe are connected to the annular separation chamber and the air outlet respectively;

[0010] An air supply pipeline is connected between the air outlet and the engine, and a pressure relief chamber is formed at one end of the air supply pipeline connected to the engine.

[0011] In a specific embodiment, the axial direction of the air inlet pipe is perpendicular to the radial direction of the annular separation chamber.

[0012] In a specific embodiment, a spiral guide ring is provided in the annular separation chamber, and the spiral guide ring is spirally wound around the air guide tube.

[0013] In a specific embodiment, the end of the air guide pipe connected to the air outlet is connected to a guide plate, the air inlet is connected to the annular separation chamber, and the air outlet is isolated from the annular separation chamber by the guide plate.

[0014] In a specific embodiment, a liquid collecting trough is provided at the bottom of the separation chamber, the air guide pipe is located above the liquid collecting trough, and a drain valve is provided at the bottom of the liquid collecting trough.

[0015] In a specific embodiment, a liquid level monitoring mechanism is provided in the liquid collecting tank, and the liquid level monitoring mechanism and the drain valve are both electrically connected to an electronic controller.

[0016] In a specific embodiment, the inner diameter of the pressure relief chamber gradually decreases in a direction approaching the engine.

[0017] In a specific embodiment, the flow area of ​​the annular separation chamber is larger than the flow area of ​​the intake pipe.

[0018] In a specific embodiment, the flow area of ​​the air guide pipe is larger than the flow area of ​​the air inlet pipe.

[0019] In a specific embodiment, a gas valve is connected to the gas supply pipeline.

[0020] Compared with the prior art, the air intake dehydration device of the present invention has the following characteristics and advantages:

[0021] 1. In the air intake dehydration device of the present invention, the air intake pipe is tangentially connected to the separation chamber, which can allow low-concentration gas to rotate and flow along the inner wall of the separation chamber after entering the separation chamber; according to the centrifugal force generated by the rotation of the fluid, the fine droplets in the low-concentration gas can be condensed on the inner wall of the separation chamber under the action of centrifugal force, producing a dehydration effect.

[0022] 2. In the air intake dehydration device of the present invention, the air guide pipe is arranged in the separation chamber and does not contact the inner wall of the separation chamber, thereby preventing the liquid film formed by the droplets from climbing up under the influence of the upper vortex and entering the engine along the air supply chamber, causing problems such as misfire and flameout.

[0023] 3. The intake dehydration device of the present invention is designed with a pressure relief chamber with a gradually increasing inner diameter, which further reduces the pressure of low-concentration gas before entering the engine, avoiding the re-condensation of the remaining gaseous water therein, ensuring that there is no condensed water in the mixed gas input into the engine cylinder for combustion, solving the problems of ignition difficulty and misfire caused by condensed water entering the engine cylinder, and improving the stability of the gas engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of the air intake dehydration device of the present invention;

[0025] Figure 2 is a cross-sectional view of an embodiment of an intake air dehydration device of the present invention;

[0026] Figure 3 A top view of an embodiment of an intake air dehydration device of the present invention;

[0027] Figure 4 It is a side view of an embodiment of the intake air dehydration device of the present invention.

[0028] Description of Figure Numbers:

[0029] 1. Separation chamber; 11. Annular separation chamber; 12. Air inlet; 13. Air outlet;

[0030] 2. Airway tube;

[0031] 3. Gas supply pipeline; 31. Pressure relief chamber; 32. Gas valve;

[0032] 4. Intake pipe;

[0033] 5. Guide plate;

[0034] 6. Spiral guide ring;

[0035] 7. Liquid collecting tank; 71. Drain valve; 72. Liquid level monitoring mechanism; 73. Electronic controller;

[0036] F, axial direction of the annular separation chamber;

[0037] H, close to the engine cylinder direction;

[0038] D. Axial direction of the intake pipe;

[0039] P. Radial direction of the annular separation chamber. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0041] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] The overall structure of a gas engine includes a supercharger, an intercooler, and an engine cylinder. The fuel must first be pressurized in the supercharger to form a high-pressure state, and then cooled by the intercooler before being fed into the engine cylinder for combustion. The low-concentration gas after transportation contains a large amount of gaseous and liquid water, which will condense into liquid water due to pressure changes after being pressurized by the supercharger. The cooling of the intercooler will further exacerbate the formation of liquid water, causing the liquid water to enter a certain engine cylinder together with the gas, leading to a series of problems such as single-cylinder misfires, unstable combustion, and excessively high exhaust temperatures. A suitable dehydration device can solve these problems.

[0044] like Figures 1 to 4 As shown, the present invention provides an intake air dehydration device connected between the intercooler and the engine cylinder, the intake air dehydration device comprising:

[0045] The separation chamber 1 has an air duct 2 passing through it, and an annular separation chamber 11 is formed between the air duct 2 and the separation chamber 1. The separation chamber 1 has an air inlet 12 and an air outlet 13. The air inlet 12 is connected to the intercooler through the air inlet pipe 4. The two ends of the air duct 2 are connected to the annular separation chamber 11 and the air outlet 13 respectively.

[0046] The air supply pipe 3 is connected between the air outlet 13 and the engine. A pressure relief chamber 31 is formed at one end of the air supply pipe 3 connected to the engine.

[0047] The annular separation chamber 11 of the present invention can make the low-concentration gas cooled by the intercooler flow along the annular separation chamber 11. During the flow along the annular separation chamber 11, the low-concentration gas will form a rotating airflow. The gaseous water or liquid water in the low-concentration gas will be thrown onto the inner wall of the separation chamber 1 due to the centrifugal force generated by the rotation of the rotating airflow. The liquid water on the inner wall of the separation chamber 1 condenses into condensed water due to aggregation and is separated from the rotating airflow, thereby achieving a dehydration effect. The air guide pipe 2 is arranged in the separation chamber 1 to discharge the gas passing through the annular separation chamber 1. 1 is the low-concentration gas after dehydration. At the same time, the air guide pipe 2 does not contact the inner wall of the separation chamber 1 to prevent the condensed water attached to the inner wall of the separation chamber 1 from moving on the inner wall of the separation chamber 1 due to the influence of the air flow, and thus entering the engine cylinder through the air outlet 13; the pressure relief chamber 31 in the air supply pipe 3 is designed to have a structure in which the inner diameter of the cavity gradually increases in the direction close to the engine cylinder, which can further reduce the pressure of the low-concentration gas, avoid the conversion of gaseous water into liquid water or condensed water in this process, and more fully protect the engine cylinder from the influence of condensed water.

[0048] Specifically, the separation chamber 1 is generally a cylindrical structure, and an air inlet 12 and an air outlet 13 are respectively provided on the inner wall of the separation chamber 1, wherein the air inlet 12 is connected to the intercooler through the air intake pipe 4, and the air outlet 13 is connected to the air supply pipe 3, and the air outlet 13 and the air inlet 12 are both located at the same end along the axial direction F of the annular separation chamber 11.

[0049] The air duct 2 is arranged in the separation chamber 1 along the axial direction F of the annular separation chamber 11, and an annular separation chamber 11 is formed between the outer wall of the air duct 2 and the inner wall of the separation chamber 1. Both ends of the air duct 2 are open, one end of which is connected to the air outlet 13, and the other end of which is connected to the annular separation chamber 11. The end of the air duct 2 connected to the annular separation chamber 11 is the end away from the air inlet 12 along the axial direction F of the annular separation chamber 11. Specifically, the end of the air duct 2 connected to the air outlet 13 is connected to a guide plate 5, which is sealed to the inner wall of the separation chamber 1. The setting of the guide plate 5 can not only fix the air duct 2 in the separation chamber 1, but also isolate the air inlet 12 and the air outlet 13, so that the gas-liquid mixed medium introduced from the air inlet 12 is discharged from the air outlet 13 after passing through the annular separation chamber 11 and the air duct 2.

[0050] In this embodiment, the guide plate 5 is set at an acute angle to the axial direction F of the annular separation chamber 11, so as to guide the low-concentration gas to flow along the guide plate 5 in the annular separation chamber 11, and guide the airflow to flow from the air inlet 12 to the end of the air guide pipe 2 connected to the annular separation chamber 11 in the axial direction F of the annular separation chamber 11; in other embodiments, the guide plate 5 can also be set perpendicular to the axial direction F of the annular separation chamber 11, and there is no limitation to this.

[0051] One end of the air supply line 3 communicates with the air outlet 13, and the other end communicates with the engine cylinder. In this embodiment, the air supply line 3 is generally a V-shaped curved pipe. In other embodiments, the shape of the air supply line 3 can be adjusted based on the positional relationship between the engine cylinder and the intercooler, and this is not a limitation. Specifically, the air supply line 3 includes a gas valve 32 and a pressure relief chamber 31, which are sequentially arranged along the direction H approaching the engine cylinder. The gas valve 32 is a ball valve, although other valve types may also be used. The pressure relief chamber 31 is generally a circular trumpet-shaped structure with a smooth inner wall without obvious protrusions or depressions. The inner diameter of the pressure relief chamber 31 gradually increases along the direction H approaching the engine cylinder.

[0052] like Figures 1 to 4 As shown, according to one embodiment of the present invention, the axial direction D of the air inlet pipe 4 is perpendicular to the radial direction P of the annular separation chamber 11 .

[0053] The axial direction D of the air inlet pipe 4 is the gas flow direction when the low-concentration gas enters the annular separation chamber 11. In order to further improve the dehydration performance of the air inlet dehydration device, it is necessary to increase the centrifugal force of the rotating airflow in the annular separation chamber 11. By setting the axial direction D of the air inlet pipe 4 to be perpendicular to the radial direction P of the annular separation chamber 11, the low-concentration gas entering the annular separation chamber 11 flows along the inner wall of the separation chamber 1. At this time, the gas flow rate loss is small, and the centrifugal force loss of the rotating airflow can be reduced as much as possible.

[0054] Specifically, such as Figure 3 As shown, the axial direction D of the air intake pipe 4 is perpendicular to the radial direction P of the annular separation chamber 11, and preferably, the axial direction D of the air intake pipe 4 is tangent to the inner wall of the separation chamber 1; in other embodiments, the axial direction D of the air intake pipe 4 and the radial direction P of the annular separation chamber 11 can also be any angle, and there is no limitation on this.

[0055] like Figure 2 As shown, according to one embodiment of the present invention, a spiral guide ring 6 is provided in the annular separation chamber 11 , and the spiral guide ring 6 is spirally wound around the air guide pipe 2 .

[0056] The low-concentration gas entering the annular separation chamber 11 along the axial direction D of the air inlet pipe 4 gradually generates a rotating airflow within the annular separation chamber 11 under the structural guidance of the inner wall of the separation chamber 1 and the outer wall of the air guide pipe 2. However, the generated rotating airflow will gradually decrease in velocity due to resistance during the rotation process, causing the low-concentration gas entering the annular separation chamber 11 first and the low-concentration gas entering the annular separation chamber 11 later to collide with each other within the annular separation chamber 11, thereby reducing the velocity of the rotating airflow and the dehydration performance of the air inlet dehydration device. The spiral guide ring 6 is provided within the annular separation chamber 11 to divide the airflow channel of the annular separation chamber 11 and ensure that the velocity of the rotating airflow is not affected by the low-concentration gas entering the annular separation chamber 11 first.

[0057] Specifically, the spiral guide ring 6 is generally a spiral ring-shaped plate structure, the spiral guide ring 6 is coiled on the outer wall of the air guide tube 2, the inner side of the spiral guide ring 6 is sealedly connected to the outer wall of the air guide tube 2, and the outer side of the spiral guide ring 6 is sealedly connected to the inner wall of the separation chamber 1; the spiral guide ring 6, the air guide tube 2 and the separation chamber 1 together form a spiral ring-shaped annular separation chamber 11, one end of the spiral ring-shaped annular separation chamber 11 is connected to the air inlet 12, and the other end of the spiral ring-shaped annular separation chamber 11 is connected to the air outlet 13 through the air guide tube 2.

[0058] In this embodiment, the flow area of ​​the spiral annular separation chamber 11 is larger than the flow area of ​​the air intake pipe 4. The low-concentration gas entering the annular separation chamber 11 can effectively reduce the pressure loss of the low-concentration gas due to the increased flow area; similarly, the flow area of ​​the air duct 2 is larger than the flow area of ​​the air intake pipe 4. The low-concentration gas entering the air duct 2 can effectively reduce the pressure loss of the low-concentration gas due to the increased flow area.

[0059] like Figure 1 and Figure 2 As shown, according to one embodiment of the present invention, a liquid collecting tank 7 is provided at the bottom of the separation bin 1 , the air guide pipe 2 is located above the liquid collecting tank 7 , and a drain valve 71 is provided at the bottom of the liquid collecting tank 7 .

[0060] The condensed water generated by the air intake dehydration device of the present invention can be collected by the liquid collecting tank 7 arranged at the bottom of the separation bin 1, and can also be discharged through the drain valve 71 after the liquid collecting tank 7 is full of condensed water, thereby achieving the dehydration and drainage effect of the entire air intake dehydration device.

[0061] In this embodiment, the liquid collecting tank 7 is generally an inverted conical warehouse body. The wide diameter end of the liquid collecting tank 7, that is, the top of the liquid collecting tank 7, is connected to the bottom of the separation warehouse 1, and the wide diameter end of the liquid collecting tank 7 is connected to the annular separation chamber 11. The air duct 2 is located above the liquid collecting tank 7 to avoid one end of the air duct 2 being submerged by accumulated condensed water, thereby preventing low-concentration gas from being discharged; the narrow diameter end of the liquid collecting tank 7, that is, the bottom of the liquid collecting tank 7, is provided with a drain valve 71.

[0062] Furthermore, a liquid level monitoring mechanism 72 is provided inside the cavity of the liquid collecting tank 7. The liquid level monitoring mechanism 72 and the drain valve 71 are electrically connected to the electronic controller 73 respectively, so as to monitor the collection of condensed water in the liquid collecting tank 7 and automatically drain the water.

[0063] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air intake dehydration device, characterized in that: Connected between the intercooler and the engine cylinder, the intake air dehydration device comprises: A separation chamber, in which an air guide pipe is provided, an annular separation chamber is formed between the air guide pipe and the separation chamber, the separation chamber has an air inlet and an air outlet, the air inlet is connected to the intercooler through the air inlet pipe, and the two ends of the air guide pipe are connected to the annular separation chamber and the air outlet respectively; An air supply pipeline is connected between the air outlet and the engine, and a pressure relief chamber is formed at one end of the air supply pipeline connected to the engine.

2. The air intake dehydration device according to claim 1, characterized in that: The axial direction of the air inlet pipe is perpendicular to the radial direction of the annular separation chamber.

3. The air intake dehydration device according to claim 2, characterized in that: A spiral guide ring is arranged in the annular separation chamber, and the spiral guide ring is arranged spirally around the air guide pipe.

4. The air intake dehydration device according to claim 3, characterized in that: One end of the air guide pipe connected to the air outlet is connected with a guide plate, the air inlet is connected to the annular separation chamber, and the air outlet is isolated from the annular separation chamber by the guide plate.

5. The air intake dehydration device according to claim 1, characterized in that: A liquid collecting trough is provided at the bottom of the separation bin, the air guide pipe is located above the liquid collecting trough, and a drainage valve is provided at the bottom of the liquid collecting trough.

6. The air intake dehydration device according to claim 5, characterized in that: A liquid level monitoring mechanism is provided in the liquid collecting tank, and the liquid level monitoring mechanism and the drain valve are both electrically connected to the electric controller.

7. The air intake dehydration device according to claim 1, characterized in that: The inner diameter of the pressure relief chamber gradually decreases in a direction approaching the engine.

8. The air intake dehydration device according to claim 1, characterized in that: The flow area of ​​the annular separation chamber is larger than the flow area of ​​the intake pipe.

9. The air intake dehydration device according to claim 1, characterized in that: The flow area of ​​the air guide pipe is larger than the flow area of ​​the air intake pipe.

10. The air intake dehydration device according to claim 1, characterized in that: The gas supply pipeline is connected with a gas valve.

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