Wet-type gas diffusing device
By designing a wet gas venting device with an outer shell and inner cylinder structure, the problem of equipment shutdown caused by instantaneous gas venting in traditional devices has been solved, achieving safe gas venting and stable equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional wet gas venting devices remove all water from the equipment when releasing pressure, causing the gas to be vented instantly and unable to retain pressure, which can easily lead to equipment shutdown and failure.
A wet gas venting device comprising an outer shell and an inner cylinder was designed. The inner cylinder is lower than the outer shell, and the top of the outer shell is provided with a discharge port. Water is injected into the inner cylinder, and a preheating chamber is formed between the outer shell and the inner cylinder. A gas delivery pipe introduces gas into the inner cylinder. The preheating chamber between the outer shell and the inner cylinder is provided to achieve gas sealing and venting. The outer shell is higher than the inner cylinder to increase the buffer capacity. Gravity and flow velocity are used to reduce the backflow of water and form a water seal with a low liquid level.
It avoids the instantaneous pressure drop of gas to zero, ensuring normal equipment operation and preventing equipment shutdown failures. It is suitable for overpressure release in gas transportation and utilization, ensuring equipment safety.
Smart Images
Figure CN224093445U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of gas delivery, in particular to a wet gas diffusion device. BACKGROUND
[0002] Coal mine gas is a mixture of gas overflowed with air during the process of mining, such as extraction, ventilation, etc. With the gradual understanding and deepening of coal mine gas, more and more attention is paid to the utilization of coal mine gas.
[0003] There are many methods of gas utilization, such as gas internal combustion engine power generation, heat accumulation oxidation utilization, purification utilization, etc. No matter which utilization method, there is an emergency shutdown condition, and since most of the extracted gas in coal mines is low-concentration gas, there is no buffer space, and it can only be used as it is extracted, so in the case of emergency shutdown, the pressure of the gas should be prevented from exceeding the maximum allowable back pressure of the water ring vacuum pump, so as not to affect the normal operation of the gas extraction pump station under any working condition.
[0004] Therefore, related diffusion devices, such as wet diffusion devices, are set in the design of traditional gas power generation and gas utilization projects. The working principle is that the wet diffusion device does not act within the normal pressure fluctuation range, and when the gas pressure exceeds the allowable value, the gas automatically breaks through the physical water seal of the wet diffusion device and is discharged.
[0005] However, the water in the equipment will be taken away completely when the traditional wet diffusion device releases pressure, so that the inside of the diffusion device becomes a water-free state, and the gas in the pipeline is completely emptied at once, so that a part of the pressure cannot be retained, and the sudden loss of pressure will easily cause the gas utilization equipment to shut down. SUMMARY
[0006] Therefore, the present application provides a wet gas diffusion device.
[0007] According to an aspect of the present application, a wet gas diffusion device is provided, characterized in that it comprises: an outer shell, an inner cylinder, and two gas pipelines.
[0008] The inner cylinder is arranged inside the cavity of the outer shell, and the height of the inner cylinder is lower than the height of the outer shell; the top of the outer shell is provided with a discharge port; the cavity of the inner cylinder is adapted to be injected with water;
[0009] One end of the two gas pipelines is adapted to communicate with the bypass pipeline to access the gas, and the other end of the two gas pipelines penetrates the outer shell and extends into the cavity of the inner cylinder to input the gas into the inner cylinder.
[0010] A preset distance is provided between the outer shell and the inner cylinder to form a preheating chamber. The outer shell has an air inlet and an air outlet suitable for connecting a bypass pipe. Both the air inlet and the air outlet are connected to the preheating chamber so that the gas enters the preheating chamber from the air inlet, heats the water in the inner cylinder, and then flows out from the air outlet.
[0011] In one possible implementation, the gas transmission pipeline includes: a connecting pipe section and an inlet pipe section; one end of the connecting pipe section is connected to a bypass pipe, and the other end of the connecting pipe section is connected to one end of the inlet pipe section, the other end of which is located inside the cavity of the inner cylinder.
[0012] In one possible implementation, a sealing layer is provided between the top of the inner cylinder and the inner wall of the outer shell.
[0013] In one possible implementation, a first drain pipe is provided on the side wall of the outer casing, the first drain pipe is connected to the preheating chamber, and a valve is provided on the first drain pipe.
[0014] In one possible implementation, a second drain pipe is provided on the side wall of the inner cylinder, the second drain pipe is connected to the interior of the inner cylinder cavity, and a valve is provided on the second drain pipe.
[0015] In one possible implementation, an overflow buffer box is provided at the overflow port of the housing, and the overflow buffer box is connected to the interior of the housing cavity.
[0016] In one possible implementation, a third drain pipe is provided on the side wall of the overflow buffer tank, the third drain pipe is connected to the interior of the overflow buffer tank, and a valve is provided on the third drain pipe.
[0017] In one possible implementation, a water inlet pipe is provided on the side wall of the casing.
[0018] In one possible implementation, both the outer shell and the inner cylinder have a cylindrical structure, and the outer shell and the inner cylinder are coaxially arranged.
[0019] In one possible implementation, the ratio of the inner cylinder's diameter to the outer shell's diameter is [value missing].
[0020] Beneficial effects: The outer shell provides installation space for the inner cylinder, and the two gas supply pipes are used to transport gas into the inner cylinder. When the gas pressure in the main gas supply pipe is within the safety threshold, the water in the inner cylinder seals the gas, ensuring that the gas does not overflow. When the gas pressure in the main gas supply pipe exceeds the safety threshold, the gas pressure breaks through the water seal and is discharged from the outlet at the top of the outer shell, thus releasing and reducing the pressure in the main gas supply pipe. Since the height of the inner cylinder is the same as the designed water seal height, but the height of the outer shell is higher than that of the inner cylinder, and the diameter of the space between the outer shell and the inner cylinder is larger than the diameter of the inner cylinder, the buffer capacity of the free space is increased. This ensures that when the gas pressure breaks through the water seal, most of the water can fall back freely due to the reduced flow rate and gravity, forming a water seal with a low liquid level in time, instead of instantly releasing the gas pressure to zero, thus avoiding shutdown failure of the gas utilization equipment due to gas pressure loss.
[0021] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description
[0022] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.
[0023] Figure 1 This diagram shows a structural schematic of a wet gas venting device according to an embodiment of this application.
[0024] Figure 2 A side view of a wet gas venting device according to an embodiment of this application is shown;
[0025] Figure 3 A top view of a wet gas venting device according to an embodiment of this application is shown;
[0026] Figure 4 A schematic diagram of the installation of a wet gas venting device according to an embodiment of this application is shown.
[0027] Outer shell 100, discharge port 111, vent pipe 112, first sewage pipe 140, water supply pipe 150, overflow port 160, inner cylinder 200, second sewage pipe 210, gas transmission pipe 300, connecting pipe section 310, deep pipe section 320, preheating chamber 400, sealing layer 500, overflow buffer box 600, third sewage pipe 610, bypass pipe 700, gas transmission main pipe 800, circulation pipe 900. Detailed Implementation
[0028] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.
[0029] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0031] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.
[0032] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.
[0033] Figure 1 This diagram shows a structural schematic of a wet gas venting device according to an embodiment of this application.
[0034] Figure 2 A side view of a wet gas venting device according to an embodiment of this application is shown; Figure 3 A top view of a wet gas venting device according to an embodiment of this application is shown; Figure 4 This diagram illustrates the installation of a wet gas venting device according to an embodiment of this application. Figure 1As shown, this wet gas venting device includes: an outer shell 100, an inner cylinder 200, and two gas delivery pipes 300; the inner cylinder 200 is disposed inside the cavity of the outer shell 100, and the height of the inner cylinder 200 is lower than the height of the outer shell 100; a discharge port 111 is provided at the top of the outer shell 100; the cavity of the inner cylinder 200 is suitable for being injected with water; one end of each of the two gas delivery pipes 300 is suitable for connecting to a bypass pipe 700 to receive gas; the two gas delivery pipes 300... The other end of each gas cylinder penetrates the outer shell 100 and extends into the cavity of the inner cylinder 200 to input gas into the inner cylinder 200. A preset distance is provided between the outer shell 100 and the inner cylinder 200 to form a preheating chamber 400. The outer shell 100 has an inlet and an outlet suitable for connecting the bypass pipe 700. Both the inlet and outlet are connected to the preheating chamber 400 so that the gas enters the preheating chamber 400 from the inlet, exchanges heat with the water in the inner cylinder 200, and then flows out from the outlet.
[0035] It should be noted here that the outer casing 100 is used to provide installation space for the inner cylinder 200, and the two gas supply pipes 300 are used to transport gas into the inner cylinder 200. When the gas pressure in the gas supply main pipe 800 is within the safety threshold, the water in the inner cylinder 200 seals the gas, ensuring that the gas does not overflow. When the gas pressure in the gas supply main pipe 800 exceeds the safety threshold, the gas pressure breaks through the water seal and is discharged from the outlet 111 at the top of the outer casing 100, thus realizing the gas supply main pipe 800... The gas pressure is released and reduced to zero. Since the height of the inner cylinder 200 is the same as the designed water seal height, but the height of the outer shell 100 is higher than that of the inner cylinder 200, and the diameter of the space between the outer shell 100 and the inner cylinder 200 is larger than the diameter of the inner cylinder 200, this increases the buffer capacity of the free space. This ensures that when the gas pressure breaks through the water seal, most of the water can fall back freely due to reduced flow velocity and gravity, forming a water seal with a lower liquid level in time, preventing the gas pressure from instantly dropping to zero and avoiding shutdown of the gas utilization equipment due to gas pressure loss. The medium flowing in the preheating chamber 400 is gas; approximately 1 / 3 of the total gas volume flows through the preheating chamber 400, utilizing the heat from a small portion of the gas to effectively prevent freezing of the inner cylinder 200. This application has a compact overall structure and is suitable for realizing the overpressure release of gas during transportation and utilization, avoiding safety hazards caused by excessive gas pressure, ensuring the safety of extraction pumping stations and underground coal mines under extreme working conditions, and ensuring normal extraction operations.
[0036] In one possible implementation, the gas transmission pipeline 300 includes: a connecting pipe section 310 and an extension pipe section 320; one end of the connecting pipe section 310 is connected to a bypass pipe 700, and the other end of the connecting pipe section 310 is connected to one end of the extension pipe section 320, the other end of which is located inside the cavity of the inner cylinder 200. Figure 1As shown, the main bodies of the connecting pipe section 310 and the in-line pipe section 320 are both L-shaped tubular structures. The flange at one end of the connecting pipe section 310 is connected to the flange of the bypass pipe 700, and the flange at the other end of the connecting pipe section 310 is connected to the flange of the in-line pipe section 320. The in-line pipe section 320 penetrates the outer shell 100.
[0037] In one possible implementation, the two gas pipelines 300 have their extension sections 320 extending into the inner cylinder 200 to the same depth.
[0038] In another possible implementation, the insertion depths 320 of the two gas transmission pipes 300 into the inner cylinder 200 are different. Setting different insertion depths for the two insertion pipe sections 320 allows for staged gas discharge to prevent overpressure accidents, but the minimum insertion depth must not be lower than the upper limit of the normal pressure required by the corresponding utilization equipment. For example, when the system operating pressure is 10 kPa, the insertion depth of the shallower gas transmission pipe 300 should not be less than the corresponding water seal height of 1000 mm. Furthermore, designed according to normal pressure fluctuations, the difference in height between the insertion pipe sections 320 of the two gas transmission pipes 300 ranges from 100 mm to 200 mm, corresponding to a pressure difference of 1000 to 2000 Pa.
[0039] In one possible implementation, a sealing layer 500 is provided between the top of the inner cylinder 200 and the inner wall of the outer casing 100. For example... Figure 2 As shown, the main body of the sealing layer 500 is an annular sheet structure. Its inner side is fixedly connected to the top edge of the inner cylinder 200 by welding, and its outer side is fixedly connected to the inner wall of the outer shell 100 by welding. The sealing layer 500 is set horizontally. Under the action of the sealing layer 500, a sealed preheating chamber 400 is formed between the inner cylinder 200 and the outer shell 100, preventing water in the inner cylinder 200 from falling into the preheating chamber 400.
[0040] In one possible implementation, a first drain pipe 140 is provided on the side wall of the outer casing 100, and the first drain pipe 140 is connected to the preheating chamber 400. A valve is provided on the first drain pipe 140. It should be noted that, considering that the gas contains a large amount of water, a relatively large amount of liquid water will form in the preheating chamber 400 due to the effects of cooling, flow direction, and gravity. Therefore, the outer casing 100 is provided with a first drain pipe 140, which can periodically or continuously adjust the drainage to ensure unobstructed gas flow and periodically clean and remove dirt and impurities in the preheating chamber 400. The valve on the first drain pipe 140 is used to control the opening and closing of the first drain pipe 140.
[0041] In one possible implementation, a second drain pipe 210 is provided on the side wall of the inner cylinder 200. One end of the second drain pipe 210 communicates with the interior of the inner cylinder 200, and the other end of the second drain pipe 210 penetrates the outer shell 100. A valve is provided on the second drain pipe 210. The second drain pipe 210 is provided to periodically drain and replace the water in the inner cylinder 200, and the valve on the second drain pipe 210 is used to control the opening and closing of the second drain pipe 210.
[0042] In one possible implementation, such as Figure 2 As shown, the outer casing 100 has an overflow port 160, which is located above the sealing layer 500. An overflow buffer tank 600 is provided outside the outer casing 100, and the overflow buffer tank 600 communicates with the interior of the outer casing 100 through the overflow port 160. This application relies on the physical height of the overflow port 160, continuous water addition, and continuous overflow to achieve a natural water seal height, transforming the traditional stagnant water mode into a flowing water mode. This effectively prevents the water inside the inner cylinder 200 from freezing due to prolonged stagnation, thus achieving antifreeze measures in cold northern regions.
[0043] In one possible implementation, a third drain pipe 610 is provided on the side wall of the overflow buffer tank 600. The third drain pipe 610 communicates with the interior of the overflow buffer tank 600, and a valve 611 is provided on the third drain pipe 610. It should be noted that the third drain pipe 610 is provided to periodically drain water from the overflow buffer tank 600, and the valve 611 on the third drain pipe 610 is used to control the opening and closing of the third drain pipe 610.
[0044] Furthermore, the main body of the overflow buffer tank 600 has a cylindrical structure.
[0045] In one possible implementation, such as Figure 2 As shown, a water inlet pipe 150 is provided on the side wall of the outer shell 100. The water inlet pipe 150 penetrates the outer shell 100 and extends into the cavity of the outer shell 100. The length of the water inlet pipe 150 extending into the outer shell 100 is greater than the width of the sealing layer 500, so that the outlet of the water inlet pipe 150 is vertically located above the inner cylinder 200, and the water in the water inlet pipe 150 can fall directly into the inner cylinder 200.
[0046] Furthermore, such as Figure 4 As shown, the third drain pipe 610 of the overflow buffer tank 600 is connected to the water inlet pipe 150 via the circulation pipe 900, so that the water discharged from the overflow buffer tank 600 eventually flows back to the inner cylinder 200 through the water inlet pipe 150. If the circulating water contains a large amount of impurities, a filter should be installed on the circulation pipe 900 to ensure that it does not become clogged or accumulate sediment.
[0047] In one possible implementation, both the main body of the outer shell 100 and the main body of the inner cylinder 200 are cylindrical, and the outer shell 100 and the inner cylinder 200 are coaxially arranged.
[0048] In one possible implementation, the diameter of the inner cylinder 200 is 0.8 to 0.85 times the diameter of the outer shell 100.
[0049] In one possible implementation, the height of the inner cylinder 200 is 0.5-0.6 times the height of the outer shell 100.
[0050] The inner cylinder (200mm) and outer shell (100mm) are made of standard carbon steel.
[0051] In one possible implementation, such as Figure 2 As shown, the inner cylinder 200 is provided with a lower connecting pipe 180 for the level gauge on its side wall, and the outer shell 100 is provided with an upper connecting pipe 170 for the level gauge on its side wall; the lower connecting pipe 180 and the upper connecting pipe 170 for the level gauge are suitable for connecting level gauges respectively; magnetic float level gauges are preferred for the level gauges; the level gauges are suitable for measuring the water level inside the equipment.
[0052] The lower connecting pipe 180 of the level gauge is located at approximately half the total height of the inner cylinder 200; the upper connecting pipe 170 of the level gauge is located 300-500mm above the top of the inner cylinder 200.
[0053] In one possible implementation, the top of the housing 100 is provided with a top plate 110, and the discharge port 111 is opened in the middle of the top plate 110. The nominal diameter of the discharge port 111 is not less than 80% of the diameter of the gas transmission main pipe 800 to ensure the venting capacity requirements.
[0054] In one possible implementation, a support member 120 is provided between the inner wall of the outer shell 100 and the top plate 110. The main body of the support member 120 has a ring-shaped structure. The top of the support member 120 is connected to the top plate 110, and the side wall of the support member 120 is fixedly connected to the inner wall of the outer shell 100. The support member 120 is suitable for effectively supporting the top plate 110.
[0055] In one possible implementation, the top plate 110 of the outer casing 100 is provided with a venting pipe 112, which is opposite to the discharge port 111. The gas discharged from the discharge port 111 flows into the venting pipe 112, and a reinforcing rib 130 is provided between the venting pipe 112 and the top plate 110 of the outer casing 100 to limit and reinforce the venting pipe 112.
[0056] like Figure 4As shown, a bypass pipe 700 is connected to the gas transmission main pipe 800. The gas wet venting device of this application is connected to the bypass pipe 700. Some gas enters the inner cylinder 200 through the two gas transmission pipes 300, and a small amount of gas flows into the preheating chamber 400. When the pressure of the gas transmission main pipe 800 exceeds the safety threshold, the gas breaks through the water seal in the inner cylinder 200 and is discharged from the discharge port 111 to realize the discharge of gas in the gas transmission main pipe 800 to reduce the internal gas pressure of the gas transmission main pipe 800 and ensure the safety index of the equipment.
[0057] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A wet gas venting device, characterized in that, include: Outer shell, inner cylinder, and two gas supply pipes; The inner cylinder is disposed inside the cavity of the outer shell, and the height of the inner cylinder is lower than the height of the outer shell; The top of the outer shell has a discharge port; the interior of the inner cylinder is suitable for being filled with water. One end of each of the two gas supply pipes is adapted to connect with a bypass pipe to receive gas, and the other end of each of the two gas supply pipes penetrates the outer shell and extends into the cavity of the inner cylinder to input the gas into the inner cylinder. A preset distance is provided between the outer shell and the inner cylinder to form a preheating chamber. The outer shell has an air inlet and an air outlet suitable for connecting the bypass pipe, and both the air inlet and the air outlet are connected to the preheating chamber so that the gas enters the preheating chamber from the air inlet, heats the water in the inner cylinder, and then flows out from the air outlet.
2. The wet gas venting device according to claim 1, characterized in that, The gas transmission pipeline includes a connecting pipe section and an inlet pipe section; one end of the connecting pipe section is connected to the bypass pipe, and the other end of the connecting pipe section is connected to one end of the inlet pipe section, the other end of the inlet pipe section being located inside the cavity of the inner cylinder.
3. The wet gas venting device according to claim 1, characterized in that, A sealing layer is provided between the top of the inner cylinder and the inner wall of the outer shell.
4. The wet gas venting device according to claim 1, characterized in that, The outer casing has a first drain pipe on its side wall, which is connected to the preheating chamber, and a valve is provided on the first drain pipe.
5. The wet gas venting device according to claim 4, characterized in that, A second drain pipe is provided on the side wall of the inner cylinder, and the second drain pipe is connected to the cavity of the inner cylinder. A valve is provided on the second drain pipe.
6. The wet gas venting device according to claim 1, characterized in that, The outer casing is provided with an overflow buffer box at the overflow port, and the overflow buffer box is connected to the interior of the cavity of the outer casing through the overflow port.
7. The wet gas venting device according to claim 6, characterized in that, The overflow buffer tank has a third sewage pipe on its side wall, which is connected to the interior of the overflow buffer tank and has a valve.
8. The wet gas venting device according to claim 1, characterized in that, The outer shell is provided with a water inlet pipe, which is suitable for injecting water into the inner cylinder through the water inlet pipe.
9. The wet gas venting device according to claim 1, characterized in that, Both the outer shell and the inner cylinder have a cylindrical structure, and the outer shell and the inner cylinder are coaxially arranged.