Gas mixing pipeline water seal explosion suppression device with liquid level self-adaptive adjustment function

Abstract

The invention discloses a gas mixing pipeline water seal explosion suppression device with a liquid level self-adaptive adjustment function. The gas mixing pipeline water seal explosion suppression device is used for solving the safety problem of coal mine gas conveying and mixing. The device comprises a vertical single cylinder, a packing water body is arranged in the vertical single cylinder to form a water seal area and a hollow area, in the water seal area, equal-diameter cobblestones are stacked on a supporting frame to form a bubble separation layer, large bubbles are separated into small bubbles, and an air inlet pipe and an air outlet pipe are further arranged. The unique liquid level regulator utilizes the principle of two U-shaped communicating vessels, according to the liquid level change of the liquid level regulating cylinder, water is automatically supplemented or drained through a floating valve, a water supplementing and draining valve body, a water supplementing and draining pipe and other components, and the liquid level of a water seal area is kept stable. Compared with the prior art, the device is simple in structure, low in cost and convenient to maintain; liquid level control is accurate, and dependence on a complex water level control system is reduced; the device is simple in structure, good in bubble separation effect, capable of effectively blocking gas flames and improving gas conveying and mixing safety, suitable for complex working conditions of a coal mine and capable of providing powerful guarantee for coal mine gas utilization safety.

Description

Technical Field

[0001] The invention belongs to the field of coal mine gas utilization, and in particular relates to a gas mixing pipeline water seal explosion-proof device with liquid level adaptive regulation. Background Art

[0002] In the process of utilizing coal mine gas, there are great safety hazards in the transportation and mixing of low-concentration gas. Low-concentration gas is flammable and explosive. Sparks generated by friction between metal debris and impurities in the transportation pipeline and the pipe wall, as well as fire sources caused by extraction and pipeline system failures, can easily cause low-concentration gas to burn or even explode. Once local combustion or explosion occurs, it is likely to quickly develop into detonation, leading to serious safety accidents.

[0003] Water-seal fire-proof and explosion-proof devices are widely used as an important measure to ensure the safety of production, storage and transportation of flammable and explosive media. However, most existing water-seal devices have obvious defects. On the one hand, their complex structure increases the manufacturing and maintenance costs of the device; on the other hand, these devices need to maintain a high water surface height during operation, which places high demands on the water level control system. When the water level is too low, the device cannot play the role of explosion-proof and explosion-proof, resulting in failure; if the water level is too high, it will increase the system pressure, which not only affects the normal operation of the system, but also increases the difficulty of maintenance, bringing many challenges to the safety of coal mine gas utilization. Summary of the invention

[0004] In view of the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a gas mixing pipeline water seal explosion-proof device with adaptive liquid level adjustment, so as to solve the safety problems in the transportation and mixing of low and medium concentration gases in coal mine gas, while overcoming the defects of the existing water seal device such as complex structure, high water level control requirements, and difficult maintenance, so as to achieve reliable explosion-proof and explosion-proofing and stable liquid level adjustment, and ensure the safe utilization of coal mine gas.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] The present invention discloses a gas mixing pipeline water seal explosion-proof device with liquid level self-adjustment, comprising: a vertical single cylinder, the interior of which is filled with a sealing water body, so that a water seal area located at the bottom and a hollow area located at the top are formed inside the vertical single cylinder; a support frame capable of being located in the water seal area is arranged inside the vertical single cylinder; a bubble separation layer is formed by stacking a number of pebbles on the support frame in the water seal area, and is used to separate large bubbles generated by the contact between gas entering the water seal area and the sealing water into small bubbles; the water seal area is divided into a water seal area and a hollow area based on the support frame. An upper mixing zone for bubble separation and a lower water seal zone for single water seal; an air inlet pipe, which is connected to the water seal zone of the vertical single cylinder and forms a first U-shaped communicating vessel with the water seal zone; an air outlet pipe, one end of which extends into the interior of the vertical single cylinder and is connected with the hollow zone, and the other end extends out of the vertical single cylinder; also includes a liquid level regulator, which includes a liquid level regulating cylinder and a liquid level adaptive regulating mechanism, wherein the liquid level regulating cylinder and the water seal zone form a second U-shaped communicating vessel, and the liquid level adaptive regulating mechanism adaptively adjusts the liquid level according to the liquid level change of the liquid level regulating cylinder.

[0007] In the present invention, the water seal area can effectively block the gas flame and prevent the explosion accident from spreading outward. The bubble separation layer formed by pebbles stacked on the support frame can quickly separate the large bubbles generated by the contact between gas and the sealing water into small bubbles. This not only reduces the pressure fluctuation caused by bubble rupture and reduces the risk of gas accumulation and explosion, but also avoids the situation of excessive local gas concentration during the gas mixing process, greatly improving the safety of gas transportation and mixing. The first U-shaped connecting vessel formed by the air inlet pipe and the water seal area ensures the stability of gas entry and further enhances the safety performance of the device.

[0008] Secondly, the liquid level regulator cleverly uses the principle of two U-shaped communicating vessels. The liquid level adaptive adjustment mechanism can automatically and accurately perform water replenishment or drainage operations according to the liquid level changes in the liquid level adjustment cylinder. This mechanism maintains the stability of the liquid level in the water seal area, reduces frequent manual intervention, ensures the reliable operation of the device, and reduces dependence on complex water level control systems. At the same time, the support frame inside the vertical single cylinder divides the water seal area into two upper and lower functional areas. The upper mixing area is responsible for bubble separation, and the lower single water seal area focuses on blocking gas flames. This partition design optimizes the water seal effect and significantly improves the overall explosion-proof and explosion-proof performance. The support frame also enhances the stability of the device structure, which is convenient for the stacking and fixation of pebbles.

[0009] Furthermore, the device uses pebbles as the material of the bubble separation layer, which is not only convenient to obtain and low in cost, but also easy to maintain and replace. Compared with the complex metal pipe network structure, using pebbles instead of metal pipe networks to cut large bubbles can reduce the adverse effects on the water seal liquid surface, and has better performance in absorbing the impact of detonation energy, providing reliable technical support for water seal fire isolation and explosion resistance. In addition, the liquid level regulating cylinder and the connecting pipe of the water seal area are reasonably designed, which can adjust the liquid level in time and accurately, so that the device can better adapt to the complex working conditions of coal mine gas transportation and mixing.

[0010] In addition, in the prior art related to gas mixing water seal explosion isolation, most of them adopt double cylinder or multi-cylinder structure, the purpose is to further divert or separate the gas or bubbles passing through the water seal. However, the present invention can achieve water seal explosion isolation and explosion relief with only a single cylinder. This is because the water seal area and the bubble separation layer composed of pebbles are mixed to effectively achieve the explosion isolation and explosion relief effect, so no additional treatment is required, and multiple cylinders are no longer needed.

[0011] According to the water-seal explosion-proof device for a gas mixing pipeline with adaptive liquid level regulation disclosed in the present invention, the vertical single-cylinder body includes a cylindrical shell portion and a conical shell portion connected to the bottom of the cylindrical shell portion, and the water seal area covers the entire conical shell portion and a portion of the cylindrical shell portion; the liquid level regulating cylinder is connected to the water seal area through the conical shell portion of the self-standing single-cylinder body, and from the connecting position with the conical shell portion to the connecting position with the liquid level regulating cylinder, the connecting pipe between the liquid level regulating cylinder and the conical shell portion is an inclined structure from top to bottom.

[0012] In the present invention, the water seal area covers the entire conical shell part and part of the cylindrical shell part, which expands the water seal area, can more effectively block the gas flame, and enhance the explosion-proof capability. The liquid level regulating tube is connected to the conical shell part through a connecting pipe inclined from top to bottom. When the device is running, with the help of gravity, the water flows more smoothly between the two. When the liquid level in the water seal area changes, water can quickly flow to the liquid level regulating tube or be replenished from the liquid level regulating tube to balance the liquid level in time, ensure the stability of the liquid level of the device, and then improve the reliability of the overall operation, ensuring the stable and efficient operation of the gas mixing pipeline water seal explosion-proof device.

[0013] According to the gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment disclosed by the present invention, the support frame is arranged at the connection between the conical shell part and the cylindrical shell part of the vertical single cylinder. Such arrangement provides stable support for the pebbles stacked to form the bubble separation layer, ensuring the stability of the bubble separation layer structure, so that it can continuously and efficiently separate the large bubbles generated by the contact between gas and sealing water into small bubbles, reduce pressure fluctuations, and reduce the risk of gas accumulation and explosion. At the same time, the support frame at this position enhances the stability of the vertical single cylinder structure, ensuring the reliable operation of the device in a complex coal mine environment.

[0014] According to the gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment disclosed by the present invention, the air inlet pipe is connected to the cylindrical shell part of the vertical single cylinder, and the connection position directly corresponds to the lower half of the bubble separation layer. Such a connection design improves the gas processing efficiency. Since the gas can directly act on the key area of ​​the bubble separation layer, the detour and ineffective flow of the gas in the water seal area are reduced, so that more gas can be effectively processed in a short time, thereby improving the operating efficiency of the entire device. Moreover, this precise connection method simplifies the gas entry path, reduces the probability of failure caused by complex air intake structure, improves the reliability and stability of the device, reduces maintenance costs and frequency, and is more suitable for working environments such as coal mines that have extremely high requirements for equipment stability.

[0015] According to the gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment disclosed by the present invention, the pebbles are equal-diameter pebbles. The equal-diameter pebbles have regular shapes and uniform gap distribution when stacked. They can more stably and efficiently cut large bubbles generated by gas into small bubbles during bubble separation, making the gas pass through the water seal area more stable, further reducing the risk of pressure fluctuations and gas accumulation and explosion. Moreover, in terms of explosion-proof performance, compared with irregular pebbles, equal-diameter pebbles perform better in absorbing the impact of detonation energy. When gas explodes, they can more effectively buffer the energy, ensure the stability and safety of the device, and provide more reliable technical support for water seal fire isolation and explosion resistance. In addition, equal-diameter pebbles are easy to screen and obtain, and the uniform specifications are also conducive to neat stacking in the device, which is convenient for installation and maintenance, and reduces the construction and maintenance costs of the device.

[0016] According to the gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment disclosed by the present invention, in the initial state, the bubble separation layer is exposed to the liquid surface of the water seal area. The so-called initial state refers to the state when the gas has not yet entered from the intake pipe or has just started to enter.

[0017] In the present invention, the exposed part can be used as an additional treatment area to further separate large bubbles that have not been completely separated by the underwater bubble separation layer, significantly improving the overall bubble separation efficiency. When encountering special circumstances such as water level fluctuations and abnormal gas pressure, a small amount of gas that flows in the opposite direction or overflows the water surface can be treated secondary to prevent local accumulation of gas and ensure stable and reliable operation of the device. In addition, the operator can intuitively judge the amount of gas entering and the bubble separation effect by observing the size and frequency of bubbles in the exposed part, which is convenient for timely adjusting operating parameters, discovering potential problems, and improving the maintainability and overall operating efficiency of the device.

[0018] According to the gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment disclosed by the present invention, the liquid level adaptive adjustment mechanism includes a float valve, a water supply and drainage valve body and a water supply and drainage pipe. The float valve is placed in a liquid level adjustment cylinder and can rise and fall with the liquid level in the liquid level adjustment cylinder. The water supply and drainage valve body is connected to the float valve so that it can rise and fall with the float valve. The water supply and drainage valve body has: an initial position, when in this position, the water supply and drainage valve body cuts off the connection between the water supply and drainage pipe and the liquid level adjustment cylinder; a drainage position, the water supply and drainage valve body can be switched from the initial position to the drainage position as the float valve rises, so that the water supply and drainage pipe is connected to the liquid level adjustment cylinder for drainage; and a water supply position, the water supply and drainage valve body can be switched from the initial position to the water supply position as the float valve descends, so that the water supply and drainage pipe is connected to the liquid level adjustment cylinder for water supply.

[0019] In the present invention, the float valve rises and falls with the liquid level of the liquid level regulating cylinder, driving the replenishment and drainage valve body to switch positions accurately, thus realizing automatic adjustment of the liquid level. The initial position cuts off the connection, effectively preventing misoperation. When the liquid level rises, the float valve rises to switch the replenishment and drainage valve body to the drainage position, and the replenishment and drainage pipe is connected to the liquid level regulating cylinder for drainage, thus avoiding excessive liquid level that increases system pressure and maintenance difficulty; when the liquid level drops, the float valve drops to drive the replenishment and drainage valve body to switch to the water replenishment position, and water is replenished through the replenishment and drainage pipe, thus preventing the liquid level from being too low and causing the device to fail. This mechanism maintains the stability of the water level in the device, reduces manual intervention, improves the reliability and practicality of the device, and ensures the stable operation of the gas mixing pipeline water seal explosion-proof device.

[0020] According to the gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment disclosed by the present invention, the connection position between the water supply and discharge pipe and the liquid level adjustment cylinder is located below the initial position of the float valve. The so-called initial position of the float valve is the position of the float valve in the liquid level adjustment cylinder after the sealing water body is injected into the vertical single cylinder to form a water seal area.

[0021] In the present invention, the connection position between the water supply and drainage pipe and the liquid level regulating cylinder is located below the initial position of the float valve, which can effectively ensure the accuracy and stability of the liquid level regulation of the device. In the initial state, water can be prevented from flowing into the liquid level regulating cylinder for no reason, the initial liquid level of the water seal area can be maintained stable, and the normal operation of the device can be prevented from being disturbed by abnormal increase in liquid level. When the liquid level in the water seal area decreases, the float valve descends and drives the water supply and drainage valve body to switch to the water supply position. This connection position can enable the water supply and drainage pipe to accurately replenish water, quickly restore the liquid level in the water seal area, and ensure that the explosion-proof and explosion-proof performance of the device is not affected. When the liquid level rises and drainage is required, the water in the water supply and drainage pipe can be prevented from flowing back, ensuring that the drainage process is smooth and unobstructed, thereby maintaining the stable and reliable operation of the entire liquid level regulation system, and ensuring that the device can function stably under various working conditions.

[0022] According to the gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment disclosed by the present invention, a valve cavity is provided on the water supply and drainage pipe, the water supply and drainage valve body is configured to be able to slide along the valve cavity, and a water supply channel and a drainage channel are provided on the water supply and drainage valve body. When in the drainage position, the drainage channel is connected with the water supply and drainage pipe, and when in the water supply position, the water supply channel is connected with the water supply and drainage pipe.

[0023] In the present invention, a valve cavity is arranged on the water supply and drainage pipe, and the water supply and drainage valve body can slide along the valve cavity and is provided with water supply and drainage channels. This design greatly improves the reliability and accuracy of the liquid level adjustment of the device. By sliding the water supply and drainage valve body in the valve cavity, the drainage and water supply functions can be accurately switched. When the liquid level in the device is too high, the water supply and drainage valve body slides to the drainage position, and the drainage channel is connected to the water supply and drainage pipe to discharge excess water in time to prevent the device from being damaged by the high liquid level; when the liquid level is too low, the valve body slides to the water supply position, and the water supply channel is connected to the water supply and drainage pipe for accurate water supply to maintain a stable liquid level. This structure effectively avoids mutual interference between the drainage and water supply processes, significantly improves the accuracy of liquid level adjustment, ensures that the device can operate stably under different liquid level conditions, reduces the occurrence of faults, and ensures the efficient operation of the gas mixing pipeline water seal explosion-proof device.

[0024] According to the gas mixing pipeline water seal explosion-proof device with liquid level adaptive regulation disclosed by the present invention, a manual valve is provided on the water supply and drainage pipe for manually controlling water supply and drainage in maintenance or emergency situations.

[0025] In the present invention, when the device needs regular maintenance, internal structure inspection or impurity cleaning, the manual valve can be used to conveniently control drainage, and the water in the device can be quickly drained, which greatly facilitates maintenance work and improves maintenance efficiency. In the event of an emergency, such as a sudden failure of the automatic liquid level adjustment system causing abnormal liquid level, or a sudden change in the operating environment of the device causing the automatic adjustment to fail to meet the demand, the manual valve enables the operator to manually replenish water or drain water in time and quickly adjust the liquid level. This avoids serious consequences such as device failure and abnormal system pressure caused by liquid level problems, ensures the safe and stable operation of the device, and effectively reduces the risk of accidents.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1) The existing water seal device has a complex structure, which not only makes the manufacturing and maintenance costs high, but also increases the difficulty of use; it mostly adopts a double-cylinder or multi-cylinder structure, the purpose of which is to further divert or separate the gas or bubbles passing through the water seal. The present invention adopts a vertical single-cylinder structure, with a support frame set up inside and pebbles of equal diameter stacked to form a bubble separation layer, and is equipped with a liquid level regulator. The structural design is ingenious and simple, reducing complex parts and connection relationships, reducing equipment costs, facilitating daily maintenance and overhaul, and improving the ease of use of the equipment. In addition, the water seal explosion-proof and explosion-proof function can be achieved by relying only on this single cylinder.

[0028] 2) Traditional water seal devices have extremely high requirements for water level control systems. Too high or too low water levels will affect the performance of the device. The present invention is equipped with a liquid level regulator, which uses the second U-shaped communicating vessel formed by the liquid level regulating cylinder and the water seal area, as well as a liquid level adaptive adjustment mechanism. The float valve drives the replenishment and drainage valve body to switch positions as the liquid level rises and falls, thereby realizing automatic water replenishment and drainage. It ensures that the liquid level in the water seal area is always stable at an appropriate height, effectively reduces the impact of water level fluctuations on system pressure, ensures stable operation of the device, and reduces dependence on complex water level control systems.

[0029] 3) Traditional devices have shortcomings in dealing with gas bubbles. The present invention uses stacked pebbles of equal diameter to form a bubble separation layer, which has a regular shape and uniform gaps, and can more stably and efficiently separate large bubbles generated by gas into small bubbles, allowing the gas to pass through the water seal area more smoothly. It reduces pressure fluctuations caused by bubble rupture, reduces the risk of gas accumulation and explosion, avoids excessive local gas concentration during gas mixing, significantly improves the safety of gas transportation and mixing, and enhances the explosion-proof and explosion-proofing capabilities of the device. Moreover, pebbles of equal diameter perform better in absorbing the impact of detonation energy, further ensuring the stability and safety of the device.

[0030] 4) The present invention divides the water seal area into upper and lower different areas, the upper mixed area is used for bubble separation, and the lower single water seal area effectively blocks the gas flame. This partition structure optimizes the water seal effect and improves the overall explosion-proof and explosion-proof performance. Compared with the traditional single-structure water seal area, it can more effectively deal with dangerous situations such as gas explosions and provide more reliable safety guarantees for the coal mine gas utilization process.

[0031] 5) The air inlet pipe is connected to the cylindrical shell of the vertical single cylinder and corresponds to the lower half of the bubble separation layer, which is conducive to full contact between the gas and the bubble separation layer and improves the bubble separation efficiency; the connecting pipe between the liquid level regulating cylinder and the conical shell is an inclined structure from top to bottom, which is convenient for liquid circulation and ensures the timeliness and accuracy of liquid level regulation; in the initial state, the bubble separation layer is exposed to the liquid surface of the water seal area, which can further separate large bubbles that have not been completely separated by the underwater bubble separation layer, improve the overall bubble separation efficiency, and perform secondary treatment on the overflowed gas when the device is operating abnormally to prevent local accumulation of gas. The connection position of the drainage pipe and the liquid level regulating cylinder, the structural design of the drainage valve body, and the setting of the manual valve all enable the device to better adapt to the complex working conditions during coal mine gas transportation and mixing, ensure the stable and reliable operation of the device, and ensure the safety of the device during maintenance and emergency situations.

[0032] The gas mixing pipeline explosion-proof and venting device with adaptive water level regulation of the present invention is disclosed in detail below in conjunction with the embodiments shown in the accompanying drawings and the accompanying drawing numbers. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The present invention is a schematic structural diagram of a gas mixing pipeline water seal explosion-proof device with adaptive liquid level regulation.

[0034] Figure 2 It is a partial enlarged view of the liquid level adaptive adjustment mechanism of the present invention.

[0035] Reference numerals

[0036] 1 vertical single cylinder; 2 bubble separation layer; 3 air inlet pipe; 4 air outlet pipe; 5 liquid level regulating cylinder; 6 float valve; 7 water supply and drainage valve body; 8 water supply and drainage pipe; 9 water supply channel; 10 drainage channel; 11 cylindrical shell part; 12 conical shell part; 13 support frame; 14 manual valve; 15 water seal area; 16 hollow area; 17 explosion vent bursting disc; 18 vertical single cylinder bracket; 19 liquid level regulating cylinder bracket. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in 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 the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict.

[0038] like Figure 1As shown, the present invention discloses a gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment, comprising a vertical single cylinder 1, a bubble separation layer 2, an air inlet pipe 3, an air outlet pipe 4 and a liquid level regulator. The vertical single cylinder 1 is filled with a sealing water body, so that a water seal area 15 located at the bottom and a hollow area 16 located at the top are formed inside the vertical single cylinder 1; a support frame 13 capable of being located in the water seal area 15 is arranged inside the vertical single cylinder 1; the bubble separation layer 2 is formed by stacking a number of pebbles on the support frame 13 in the water seal area 15, and is used to separate the large bubbles generated by the contact between the gas entering the water seal area 15 and the sealing water into small bubbles; the water seal area 15 is divided into an upper mixing area where the water seal and the bubbles are separated and mixed, and a lower water seal area of ​​a single water seal based on the support frame 13; the air inlet pipe 3 is connected to the water seal area 15 of the vertical single cylinder 1, and forms a first U-shaped communicating vessel with the water seal area 15; one end of the air outlet pipe 4 extends into the interior of the vertical single cylinder 1 and is connected with the hollow area 16, and the other end extends out of the vertical single cylinder 1; the liquid level regulator includes a liquid level regulating cylinder 5 and a liquid level adaptive regulating mechanism, wherein the liquid level regulating cylinder 5 and the water seal area 15 form a second U-shaped communicating vessel, and the liquid level adaptive regulating mechanism adaptively adjusts the liquid level according to the liquid level change of the liquid level regulating cylinder 5.

[0039] The gas mixing pipeline water seal explosion-proof device of the present invention has excellent safety and stability. The water seal area 15 can block the gas flame, and the bubble separation layer 2 is formed by stacking pebbles, which can quickly separate large bubbles into small bubbles, reduce pressure fluctuations and the risk of gas accumulation and explosion, and avoid excessive local gas concentration; the first U-shaped communication vessel formed by the air inlet pipe 3 and the water seal area 15 ensures stable gas entry. The liquid level regulator uses the principle of two U-shaped communication vessels, and the liquid level adaptive adjustment mechanism can automatically and accurately replenish or drain water to maintain the stability of the liquid level in the water seal area 15, reduce manual intervention, and reduce dependence on complex water level control systems. The internal support frame 13 of the vertical single cylinder 1 divides the water seal area 15 into zones, optimizes the water seal effect, and enhances the structural stability, which is convenient for stacking and fixing pebbles. In addition, pebbles are used as the material of the bubble separation layer 2, which is easy to obtain, low in cost, and easy to maintain and replace. Compared with metal pipes, they have less adverse effects on the water seal liquid level and better performance in absorbing the impact of explosion energy. In addition, the design of the connecting pipe between the liquid level regulating cylinder 5 and the water seal area 15 is reasonable, so that the device can better adapt to complex working conditions.

[0040] In the prior art of gas mixed water seal explosion isolation, double cylinder or multi-cylinder structure is mostly used, the purpose is to further divert or separate the gas or bubbles passing through the water seal. However, the present invention can achieve water seal explosion isolation and explosion relief based on only a single cylinder. Because the water seal area 15 and the pebbles are mixed, explosion isolation and explosion relief can be effectively achieved without additional treatment, and no more cylinders are needed.

[0041] like Figure 1 and Figure 2As shown, in a preferred embodiment, the liquid level adaptive adjustment mechanism is composed of a float valve 6, a replenishment and drainage valve body 7 and a replenishment and drainage pipe 8. Among them, the float valve 6 is placed on the water surface in the liquid level adjustment cylinder 5, and it can rise and fall with the change of the liquid level in the liquid level adjustment cylinder 5. When the water level in the liquid level adjustment cylinder 5 rises, the float valve 6 rises due to the buoyancy. Since the replenishment and drainage valve body 7 is connected to the float valve 6, the replenishment and drainage valve body 7 will be driven by the float valve 6 to rise together; conversely, when the water level in the liquid level adjustment cylinder 5 drops, the float valve 6 drops under the action of its own gravity, and the replenishment and drainage valve body 7 will also drop accordingly. In this embodiment, the float valve 6, the replenishment and drainage valve body 7 and the replenishment and drainage pipe 8 of the liquid level adaptive adjustment mechanism cooperate with each other and can automatically respond according to the change of the liquid level in the liquid level adjustment cylinder 5. The float valve 6 drives the replenishment and drainage valve body 7 to move as the liquid level rises and falls, realizing automatic switching of the connection state between the replenishment and drainage pipe 8 and the liquid level regulating cylinder 5, thereby automatically adjusting the liquid level, maintaining the water level in the device stable, avoiding the impact of excessively high or low liquid level on the device performance, reducing manual intervention, and ensuring stable and reliable operation of the device.

[0042] In the present invention, the water supply and drainage valve body 7 has three states: the initial position, the drainage position, and the water supply position. In the initial position, the water supply and drainage valve body 7 cuts off the connection between the water supply and drainage pipe 8 and the liquid level regulating cylinder 5; when the float valve 6 rises, the water supply and drainage valve body 7 switches from the initial position to the drainage position, at which time the water supply and drainage pipe 8 is connected to the liquid level regulating cylinder 5, thereby realizing the drainage function; and when the float valve 6 falls, the water supply and drainage valve body 7 switches from the initial position to the water supply position, so that the water supply and drainage pipe 8 is connected to the liquid level regulating cylinder 5 again, and then the water supply operation is performed.

[0043] The three states of the water supply and drainage valve body 7 and the switching mechanism that moves with the float valve 6 realize automatic and precise adjustment of the liquid level. Cutting off the connection at the initial position can prevent misoperation; when the float valve 6 rises or falls, the water supply and drainage valve body 7 switches to the drainage or water supply position accordingly, allowing the water supply and drainage pipe 8 to be connected with the liquid level regulating cylinder 5, which can timely discharge excess water or replenish missing water, maintain the stability of the liquid level in the water seal area 15, and ensure the stable operation of the device.

[0044] like Figure 1 As shown, in a preferred embodiment, the connection position between the water supply and drainage pipe 8 and the liquid level regulating cylinder 5 is located below the initial position of the float valve 6. Such a design effectively prevents water from accidentally flowing into the liquid level regulating cylinder 5 when there is no demand, ensures the stability of the initial liquid level, and prevents the abnormal increase of the liquid level in the water seal area 15 from affecting the operation of the device. When the liquid level in the vertical single cylinder 1 drops, the float valve 6 drops and drives the water supply and drainage valve body 7 to switch to the water supply position. At this time, the water supply and drainage pipe 8 below can accurately replenish water, so that the liquid level in the water seal area 15 is restored in time, ensuring the explosion-proof and explosion-proof performance. When the liquid level rises to drain, because the connection position is below the initial position of the float valve 6, the water in the water supply and drainage pipe 8 can be prevented from flowing back, ensuring smooth drainage and maintaining the stability and reliability of the liquid level regulation system.

[0045] In the present invention, a valve cavity is provided on the water supply and drainage pipe 8, and the water supply and drainage valve body 7 can slide in the valve cavity. A water supply channel 9 and a drainage channel 10 are provided on the water supply and drainage valve body 7. When the water supply and drainage valve body 7 is in the drainage position, the drainage channel 10 is connected with the water supply and drainage pipe 8; when it is in the water supply position, the water supply channel 9 is connected with the water supply and drainage pipe 8.

[0046] This design enables the water replenishment and drainage valve body 7 to accurately switch between the drainage and water replenishment positions, thereby ensuring that the device functions normally under different liquid level conditions. When the liquid level in the device is too high and needs to be drained, the drainage channel 10 is connected to the water replenishment and drainage pipe 8, and excess water can be discharged in time to avoid the adverse effects of excessive liquid level on the device. When the liquid level is too low and needs to be replenished, the water replenishment channel 9 is connected to the water replenishment and drainage pipe 8 to achieve precise water replenishment and maintain a stable liquid level. Compared with other connection methods, this structure effectively avoids mutual interference between the drainage and water replenishment processes, greatly improves the accuracy and reliability of liquid level regulation, ensures the stable operation of the device, and reduces the probability of failure.

[0047] In the present invention, the size of the float valve 6 is adapted to the inner diameter of the liquid level regulating tube 5, and this adaptation relationship is extremely critical. Because if the float valve 6 shakes left and right during the lifting process, it may interfere with the connection between the drainage pipe 8 and the drainage channel 10 and the water replenishment channel 9. For example, when the swing amplitude of the float valve 6 is too large, it may not be able to accurately dock with the channel when it needs to be connected, resulting in the drainage or water replenishment function not being able to function normally, thereby affecting the water level control accuracy and stability of the liquid level adaptive adjustment mechanism. Ensuring the adaptation of the float valve 6 to the inner diameter of the liquid level regulating tube 5 can ensure the stable and reliable operation of the device.

[0048] In addition, to further ensure the high efficiency and stability of the device operation, the inner diameters of the water replenishment channel 9 and the drainage channel 10 match the diameter of the water replenishment and drainage pipe 8. The core significance of such a design is that when the water replenishment channel 9 or the drainage channel 10 is connected to the water replenishment and drainage pipe 8 respectively, seamless connection can be achieved, effectively avoiding water leakage at the connection point, thereby effectively ensuring the efficient operation of the water replenishment and drainage process.

[0049] like Figure 1As shown, in a preferred embodiment, the vertical single-cylinder body 1 is composed of a cylindrical shell portion 11 and a conical shell portion 12 connected to the bottom of the cylindrical shell portion 11; the water seal area 15 covers the entire conical shell portion 12 and part of the cylindrical shell portion 11; the liquid level regulating cylinder 5 is connected to the conical shell portion 12 of the vertical single-cylinder body 1, and from the connecting position of the conical shell portion 12 and the liquid level regulating cylinder 5, the connecting pipe therebetween presents an inclined structure from top to bottom, and the inclination angle of the connecting pipe is determined according to actual conditions to ensure that during the liquid level adjustment process, the water flow rate can meet the demand for rapid adjustment of the liquid level, and will not cause excessive fluctuations in the liquid level due to excessive flow.

[0050] In the above embodiment, the water seal area 15 covers the conical shell part 12 and part of the cylindrical shell part 11. This design makes full use of the structure of the vertical single cylinder 1, expands the water seal area, can more effectively block gas flames, and improves the explosion-proof capability. At the same time, the connecting pipe inclined from top to bottom between the liquid level regulating cylinder 5 and the conical shell part 12, with the help of gravity, allows water to flow more smoothly between the two. When the liquid level in the water seal area 15 changes, water can quickly flow to the liquid level regulating cylinder 5 or be replenished from the liquid level regulating cylinder 5, timely balance the liquid level, ensure the stability of the liquid level of the device, and thus improve the reliability of the overall operation.

[0051] like Figure 1 As shown, inside the vertical single cylinder 1, a support frame 13 is provided at the connection between the conical shell part 12 and the cylindrical shell part 11. In the water seal area 15, a number of pebbles are stacked on the support frame 13 to form a bubble separation layer 2. This structure divides the water seal area 15 into two parts: the upper part is a mixed area where water seal and bubble separation are mixed, and the lower part is a water seal area with pure water seal.

[0052] This design has many advantages: first, the bubble separation layer 2 can separate large bubbles generated by gas into small bubbles, so that the gas can pass through the water seal area 15 more smoothly, reducing the pressure fluctuation caused by bubble rupture, thereby reducing the risk of gas accumulation and explosion; second, the partition structure optimizes the water seal effect, the water seal area 15 of the single water seal below can more effectively block the gas flame, and the upper mixing area further processes the bubbles, thereby improving the overall explosion-proof and explosion-proof performance; third, the setting of the support frame 13 facilitates the stacking and fixation of pebbles, thereby enhancing the stability and reliability of the device structure.

[0053] like Figure 1As shown, in the embodiment of the present invention, the vertical single cylinder 1 and the liquid level regulating cylinder 5 are fixed by the vertical single cylinder bracket 18 and the liquid level regulating cylinder bracket 19 respectively. This effectively improves the stability and reliability of the device, so that the two can maintain precise position and posture in the complex environment of the coal mine, such as vibration and air flow impact, to avoid component damage and loose connection. Stable installation ensures the normal operation of the water seal area 15 and the liquid level regulating system, prevents water seal leakage and abnormal liquid level regulation, ensures that the gas mixing pipeline water seal explosion-proof device continues to play the role of blocking gas flames and regulating liquid levels, and provides strong support for the safety of coal mine gas transportation and mixing operations.

[0054] like Figure 1 As shown, in a preferred embodiment, a vent rupture disc 17 is provided above the cylindrical shell portion 11 of the vertical mono-cylinder 1. When the pressure inside the vertical mono-cylinder 1 exceeds the safety threshold, the vent rupture disc 17 quickly ruptures to release the pressure inside the cylinder, thereby ensuring the safe operation of the device. The specific value of the safety threshold is determined according to the actual working conditions.

[0055] like Figure 1 As shown, the air inlet pipe 3 is connected to the cylindrical shell part 11 of the vertical single cylinder 1, and the connection position directly corresponds to the lower half of the bubble separation layer 2. After the gas enters from this position, it can directly contact the bubble separation layer 2. This is conducive to the bubble separation layer 2 quickly separating the large bubbles generated by the contact between the gas and the sealing water into small bubbles, allowing the gas to pass through the water seal area 15 more smoothly, reducing the pressure fluctuation caused by the bubble rupture, and reducing the risk of gas accumulation and explosion. In the process of gas mixing, this design can also avoid excessive local gas concentration, effectively improve the safety of gas transportation and mixing, and at the same time better play the explosion-proof and explosion-proof function of the device.

[0056] In the present invention, the pebbles are equal-diameter pebbles with regular shapes. When stacked to form a bubble separation layer, the gaps between them are more evenly distributed, which can more stably and efficiently cut large bubbles generated by gas into small bubbles, making the gas pass through the water seal area 15 more smoothly, further reducing the risk of pressure fluctuations and gas accumulation and explosion. On the other hand, compared with irregular pebbles, equal-diameter pebbles perform better in absorbing the impact of detonation energy. When gas explodes, they can more effectively buffer the energy, ensure the stability and safety of the device, and provide more reliable technical support for water seal fire isolation and explosion resistance.

[0057] like Figure 1As shown, in the initial state, the bubble separation layer 2 is partially exposed to the liquid surface of the water seal area 15. The part exposed to the liquid surface can play an important role as an additional processing area. It can further separate large bubbles that have not been completely separated by the underwater bubble separation layer 2, effectively share the work of the underwater bubble separation layer 2, and thus significantly improve the overall bubble separation efficiency. In special circumstances such as water level fluctuations and abnormal gas pressure, a small amount of gas that flows in the opposite direction or overflows the water surface can also be treated for the second time by this part of the bubble separation layer, thereby preventing local accumulation of gas and ensuring stable and reliable operation of the device. In addition, the operator can also intuitively judge the amount of gas entering and the bubble separation effect by observing the size and frequency of bubbles in the exposed part, so as to adjust the operating parameters in time, find potential problems, and improve the maintainability and overall operating efficiency of the device.

[0058] like Figure 1 As shown, in a preferred embodiment, a manual valve 14 is provided on the water supply and drainage pipe 8. When the device needs regular maintenance, internal structure inspection or impurity cleaning, the drainage can be controlled by the manual valve 14 to facilitate the drainage of the water in the device, providing convenience for maintenance work. In emergency situations, such as when the automatic liquid level adjustment system fails and causes abnormal liquid level, or when the operating environment of the device changes suddenly and the automatic adjustment cannot meet the needs, the manual valve 14 allows the operator to manually replenish water or drain water in time and quickly adjust the liquid level to avoid serious consequences such as device failure and abnormal system pressure caused by liquid level problems, thereby ensuring the safe and stable operation of the device and reducing the risk of accidents.

[0059] The working principle of the present invention is as follows:

[0060] When the gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment is working, the gas enters the water seal area 15 of the vertical single cylinder 1 through the air inlet pipe 3, and the air inlet pipe 3 and the water seal area 15 form a first U-shaped communicating vessel to ensure the smooth entry of the gas. The bubble separation layer 2 formed by the stacking of equal-diameter pebbles in the water seal area 15 separates the large bubbles generated by the contact between the gas and the sealing water into small bubbles, so that the gas passes smoothly through the water seal area 15, reduces the pressure fluctuation and explosion risk, and avoids excessive local gas concentration. The treated gas rises to the hollow area and is discharged through the air outlet pipe 4. The liquid level regulator uses the second U-shaped communicating vessel formed by the liquid level adjustment cylinder 5 and the water seal area 15, as well as the liquid level adaptive adjustment mechanism to realize automatic liquid level adjustment. When the liquid level in the liquid level regulating cylinder 5 changes, the float valve 6 rises and falls accordingly, driving the replenishment and drainage valve body 7 to switch positions, so that the replenishment and drainage pipe 8 is connected to the liquid level regulating cylinder 5 through the drainage channel 10 or the replenishment channel 9, achieving drainage or replenishment, and maintaining the stability of the liquid level in the water seal area 15. In special circumstances, such as maintenance or emergency situations, manual replenishment or drainage operations can be performed through the manual valve 14 on the replenishment and drainage pipe 8 to ensure stable operation of the device.

[0061] The present invention effectively solves the problems of complex structure, harsh water level control and difficult maintenance of existing water seal explosion-proof devices through the coordinated work of various parts, significantly improves the safety and reliability of the gas mixing pipeline, reduces maintenance costs, and ensures the safety of the gas utilization process.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment, characterized in that: include: A vertical monotube (1) is filled with a sealed water body, so that a water seal area (15) located at the bottom and a hollow area (16) located at the top are formed inside the vertical monotube (1); a support frame (13) capable of being located in the water seal area (15) is arranged inside the vertical monotube (1); The bubble separation layer (2) is formed by stacking a plurality of the pebbles on a support frame (13) in the water seal area (15), and is used to separate large bubbles generated by the contact between the gas entering the water seal area (15) and the sealing water into small bubbles; the water seal area (15) is divided into an upper mixed area where the water seal and the bubble separation are mixed and a lower water seal area of ​​a single water seal based on the support frame (13); An air inlet pipe (3) connected to a water seal area (15) of the vertical single cylinder (1) and forming a first U-shaped communicating vessel with the water seal area (15); An air outlet pipe (4), one end of which extends into the interior of the vertical monotube (1) and communicates with the hollow area (16), and the other end of which extends outward from the vertical monotube (1); It also comprises a liquid level regulator, which comprises a liquid level regulating cylinder (5) and a liquid level self-adaptive regulating mechanism, wherein the liquid level regulating cylinder (5) and the water seal area (15) form a second U-shaped communicating vessel, and the liquid level self-adaptive regulating mechanism self-adaptively adjusts the liquid level according to the change of the liquid level of the liquid level regulating cylinder (5).

2. The gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment according to claim 1 is characterized in that: The vertical single cylinder (1) comprises a cylindrical shell portion (11) and a conical shell portion (12) connected to the bottom of the cylindrical shell portion (11), and the water seal area (15) covers the entire conical shell portion (12) and part of the cylindrical shell portion (11); The conical shell portion (12) of the self-standing single cylinder (1) of the liquid level regulating cylinder (5) is connected to the water seal area (15), and from the connection position with the conical shell portion (12) to the connection position with the liquid level regulating cylinder (5), the connecting pipe between the liquid level regulating cylinder (5) and the conical shell portion (12) is an inclined structure from top to bottom.

3. The gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment according to claim 2 is characterized in that: The support frame (13) is arranged at the connection between the conical shell part (12) and the cylindrical shell part (11) of the vertical single cylinder (1).

4. The gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment according to claim 2 is characterized in that: The air inlet pipe (3) is connected to the cylindrical shell portion (11) of the vertical single cylinder (1), and the connection position directly corresponds to the lower half area of ​​the bubble separation layer (2).

5. The gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment according to claim 1 is characterized in that: The pebbles are pebbles of equal diameter.

6. The gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment according to claim 1 is characterized in that: In the initial state, the bubble separation layer (2) is exposed above the liquid surface of the water seal area (15).

7. The gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment according to claim 1 is characterized in that: The liquid level self-adaptive regulating mechanism comprises a float valve (6), a replenishing and draining valve body (7) and a replenishing and draining pipe (8); the float valve (6) is placed in the liquid level regulating cylinder (5) and can rise and fall with the liquid level in the liquid level regulating cylinder (5); the replenishing and draining valve body (7) is connected to the float valve (6) so that it can rise and fall with the float valve (6); the replenishing and draining valve body (7) has: an initial position, in which the water supply and drainage valve body (7) cuts off the connection between the water supply and drainage pipe (8) and the liquid level regulating cylinder (5); Drainage position, the replenishment and drainage valve body (7) can switch from the initial position to the drainage position as the float valve (6) rises, so that the replenishment and drainage pipe (8) is connected to the liquid level regulating cylinder (5) to drain water; The water replenishment position is such that the water replenishment and drainage valve body (7) can be switched from the initial position to the water replenishment position as the float valve (6) descends, so that the water replenishment and drainage pipe (8) is connected to the liquid level regulating cylinder (5) for water replenishment.

8. The gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment according to claim 7 is characterized in that: The communication position between the water supply and discharge pipe (8) and the liquid level regulating cylinder (5) is located below the initial position of the float valve (6).

9. The gas mixing pipeline water seal explosion-proof device with liquid level adaptive adjustment according to claim 8 is characterized in that: The water supply and drainage pipe (8) is provided with a valve cavity, the water supply and drainage valve body (7) is configured to be able to slide along the valve cavity, and the water supply and drainage valve body (7) is provided with a water supply channel (9) and a drainage channel (10); when in the drainage position, the drainage channel (10) is connected to the water supply and drainage pipe (8), and when in the water supply position, the water supply channel (9) is connected to the water supply and drainage pipe (8).

10. The device according to claim 9, characterized in that The water supply and drainage pipe (8) is provided with a manual valve (14) for manually controlling water supply and drainage during maintenance or in an emergency.

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