Gas mixing pipeline water seal flame arrester with liquid level self-adaptive adjustment function

Abstract

The utility model relates to a gas mixing pipeline water seal flame arrester with a liquid level self-adaptive adjustment function, which is designed for solving the safety problem of low-concentration gas conveying and mixing in coal mine gas utilization and overcoming the defects that an existing water seal device is complex in structure, difficult in water level control and the like. A water seal area and a hollow area are formed in the vertical single barrel, a bubble separation layer is composed of stacked cobblestones, an air inlet pipe and an air outlet pipe are communicated with the water seal area and the hollow area respectively, and a liquid level regulator is further arranged. The liquid level adjusting cylinder and the water seal area form a second U-shaped communicating vessel, and the liquid level self-adaptive adjusting mechanism can automatically supplement water or drain water according to liquid level changes. The bubble separation layer composed of the equal-diameter cobblestones can efficiently separate bubbles, and the position of the gas inlet pipe facilitates full contact of gas and the bubble separation layer. The device is simple in structure, accurate in liquid level control and good in bubble separation effect, effectively improves the safety of gas conveying and mixing, adapts to complex working conditions and has good application prospects.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of coal mine gas utilization, concretely relates to a kind of gas mixing pipeline water seal fire barrier of liquid level self-adaptive regulation. BACKGROUND

[0002] In the process of coal mine gas utilization, the transportation and mixing of low-concentration gas face serious safety challenges. Due to the flammable and explosive characteristics of low-concentration gas, sparks generated by the friction between metal debris, other impurities in the transportation pipeline and the pipe wall, as well as the fire sources caused by the failure of the extraction system and the pipeline system, can easily cause the combustion or explosion of low-concentration gas. Once local combustion or explosion occurs, it may quickly develop into a detonation, causing serious safety accidents.

[0003] Water seal fireproof and explosion-proof devices have been widely used as effective measures to ensure the safety of flammable and explosive medium production, storage and transportation. However, most existing water seal devices have obvious defects. On the one hand, their structure is relatively complex, increasing equipment cost and maintenance difficulty; on the other hand, a relatively high water seal surface height needs to be maintained during operation, which is demanding for the water level control system. When the water level is too low, the device cannot effectively play the role of fireproof and explosion-proof, leading to failure; when the water level is too high, it will increase the system pressure, not only affecting the normal operation of the system, but also further increasing the maintenance difficulty, limiting the application effect of water seal fireproof and explosion-proof devices in actual production. SUMMARY

[0004] To overcome the shortcomings of the prior art, the utility model aims to design a gas mixing pipeline water seal fire barrier with simple structure, automatic liquid level adjustment and reduced impact of water level fluctuation on system pressure, to solve the problems of complex structure, high requirement for water level control system and safety and operation problems caused by water level in existing water seal devices, and to ensure the safety of coal mine gas transportation and mixing process.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a kind of gas mixing pipeline water seal fire blocking devices of liquid level self-adaptive regulation, comprising: vertical single cylinder, its inside is filled with water block, so that vertical single cylinder inside forms water seal area located below and hollow area located above;Bubble separation layer, it is formed by several in water seal area stacked pebbles, for the gas bubble separation into small bubble that gas gas in water seal area is contacted with water block produces;Air inlet pipe, it is communicated in the water seal area of vertical single cylinder, and first U-shaped communicating vessel is formed with water seal area;Gas outlet pipe, one end thereof extends into vertical single cylinder and is communicated with hollow area, and the other end extends out of vertical single cylinder;It further includes liquid level regulator, it includes liquid level adjusting cylinder and liquid level self-adaptive regulation mechanism, wherein liquid level adjusting cylinder forms second U-shaped communicating vessel with water seal area, and liquid level self-adaptive regulation mechanism is adaptively adjusted to liquid level according to the liquid level change of liquid level adjusting cylinder.

[0007] The water seal area of the utility model can effectively block gas flame and external environment, to prevent the spread of explosion accident. Bubble separation layer is composed of pebbles, which can separate large bubbles produced by gas gas and water block into small bubbles, so that gas passes through water seal area more smoothly, reduces pressure fluctuation caused by bubble rupture, and reduces the risk of gas accumulation explosion. In the gas mixing process, this stable bubble discharge method can also avoid local gas concentration too high, and improve the safety of gas transportation and mixing.

[0008] Moreover, the liquid level regulator of the utility model utilizes two U-shaped communicating vessel principles, through liquid level adjusting cylinder and liquid level self-adaptive regulation mechanism, can automatically supplement water or drain water according to liquid level change, to maintain the stability of water seal area liquid level. This avoids the influence of device performance due to too high or too low liquid level, reduces frequent manual intervention, and ensures reliable operation of the device. Moreover, pebbles are used to form bubble separation layer, which is convenient to obtain and low in cost, and compared with complex metal pipe network structure, it is easier to maintain and replace. The structural design of vertical single cylinder, combined with the layout of water seal area and hollow area, and the reasonable setting of air inlet pipe and gas outlet pipe, makes the overall structure of the device compact, occupies small space, and is convenient to install and use in limited environment such as coal mine.

[0009] In addition, in the prior art related to gas mixing water seal explosion-proof, double-cylinder or multi-cylinder structure is mostly used, the purpose is to further distribute or separate the gas gas or bubbles passing through the water seal. However, the utility model only relies on a single cylinder, and can realize water seal explosion-proof and explosion relief. This is because the water seal area and the bubble separation layer composed of pebbles are used together, which can effectively achieve the effect of explosion-proof and explosion relief, so there is no need for additional processing, and multiple cylinders are no longer needed.

[0010] The gas mixing pipeline water seal fire barrier with self-adaptive liquid level adjustment disclosed by the utility model has a liquid level self-adaptive adjustment mechanism, which comprises a float valve, a water supplementing and discharging valve body and a water supplementing and discharging pipe.

[0011] In the utility model, the float valve rises and falls with the liquid level of the liquid level adjusting cylinder, and drives the water supplementing and discharging valve body to switch positions, so that the water supplementing and discharging pipe is cut off from the liquid level adjusting cylinder in the initial position to prevent misoperation.

[0012] According to the gas mixing pipeline water seal fire barrier with self-adaptive liquid level adjustment disclosed by the utility model, the communication position of the water supplementing and discharging pipe and the liquid level adjusting cylinder is below the initial position of the float valve.

[0013] The initial position of the float valve is the position of the float valve in the liquid level adjusting cylinder after the sealing water body is injected into the vertical single cylinder to form the water seal area.

[0014] According to the water-sealed flame arrester for gas mixing pipelines with adaptive liquid level regulation disclosed in this utility model, a valve cavity is provided on the water supply and drainage pipes. The water supply and drainage valve body is designed to slide along the valve cavity, and it is equipped with a water supply channel and a drainage channel. When in the drainage position, the drainage channel is connected to the water supply and drainage pipes; when in the water supply position, the water supply channel is connected to the water supply and drainage pipes. This design allows the water supply and drainage valve body to precisely switch between drainage and water supply positions, ensuring the device functions correctly under different liquid level conditions. When drainage is required, the drainage channel is connected to the water supply and drainage pipes to promptly drain excess water and prevent excessively high liquid levels from adversely affecting the device. When water is required, the water supply channel is connected to the water supply and drainage pipes to achieve precise water supply and maintain a stable liquid level. Compared to other connection methods, this structure effectively avoids mutual interference between drainage and water supply processes, greatly improves the accuracy and reliability of liquid level regulation, ensures stable operation of the device, and reduces the occurrence of malfunctions.

[0015] According to the gas mixing pipeline water seal flame arrester with adaptive liquid level regulation disclosed in this utility model, the vertical single-cylinder body includes a cylindrical shell section and a conical shell section connected to the bottom of the cylindrical shell section. The water seal zone covers the entire conical shell section and part of the cylindrical shell section. The liquid level regulating cylinder communicates with the water seal zone from the conical shell section of the vertical single-cylinder body, and the connecting pipe between the liquid level regulating cylinder and the conical shell section is an inclined structure from top to bottom from the position of communication with the conical shell section to the position of communication with the liquid level regulating cylinder. This design allows the water seal zone to make full use of the cylinder structure, enhancing the explosion-proof effect. The liquid level regulating cylinder and the conical shell section are connected by an inclined connecting pipe from top to bottom. During the operation of the device, it is beneficial for water to flow naturally between the two, improving the liquid level regulation efficiency. When the liquid level in the water seal zone changes, water can quickly flow to or from the liquid level regulating cylinder with the help of gravity and the structure of the inclined connecting pipe, timely balancing the liquid level, ensuring the stability of the liquid level of the device, and improving the overall operational reliability.

[0016] According to the gas mixing pipeline water seal flame arrester with adaptive liquid level adjustment disclosed in this utility model, a support frame is provided at the connection between the conical shell part and the cylindrical shell part in the vertical single cylinder body. Several pebbles are stacked on the support frame in the water seal area to form a bubble separation layer, so that the water seal area is divided into an upper mixing area where water seal and bubble separation are mixed and a lower water seal area with single water seal.

[0017] In the utility model, the support frame is arranged at the connecting position of the inner conical and cylindrical shell part of the vertical single cylinder and forms a bubble separation layer, and the water seal area can be divided into different areas in upper and lower parts. On the one hand, the bubble separation layer can separate the large bubbles generated by the gas into small bubbles, so that the gas passes through the water seal area more smoothly, reduces the pressure fluctuation caused by the bubble breaking, and reduces the risk of gas accumulation explosion. On the other hand, the partition structure optimizes the water seal effect, and the lower single water seal area can more effectively block the gas flame, and the upper mixing area further processes the bubbles, thereby improving the overall explosion-proof and pressure relief performance. In addition, the arrangement of the support frame facilitates the stacking and fixing of the cobblestones, thereby enhancing the stability and reliability of the device structure.

[0018] According to the gas mixing pipeline water seal fire barrier with self-adaptive liquid level regulation disclosed by the utility model, the air inlet pipe is communicated with the cylindrical shell part of the vertical single cylinder, and the communication position directly corresponds to the lower half area of the bubble separation layer.

[0019] In the utility model, the gas enters from the position and can directly contact the bubble separation layer, which is beneficial to the bubble separation layer to separate the large bubbles generated by the contact between the gas and the sealing water into small bubbles, so that the gas can pass through the water seal area more smoothly, reduce the pressure fluctuation caused by the bubble breaking, reduce the risk of gas accumulation explosion, avoid the local gas concentration being too high during the gas mixing process, effectively improve the safety of gas transportation and mixing, and better play the explosion-proof and pressure relief function of the device.

[0020] According to the gas mixing pipeline water seal fire barrier with self-adaptive liquid level regulation disclosed by the utility model, the cobblestones are equidiameter cobblestones. On the one hand, the equidiameter cobblestones have regular shapes, and the gaps between them are more uniform when they are stacked to form the bubble separation layer, so that the large bubbles generated by the gas can be more stably and efficiently cut into small bubbles, the gas passes through the water seal area more smoothly, and the risk of pressure fluctuation and gas accumulation explosion is further reduced. On the other hand, compared with irregular cobblestones, the equidiameter cobblestones perform better in absorbing the impact of explosion energy, can more effectively buffer the energy when the gas explodes, guarantee the stability and safety of the device, and provide more reliable technical support for the water seal fireproofing and explosion-proofing.

[0021] According to the gas mixing pipeline water seal fire barrier with self-adaptive liquid level regulation disclosed by the utility model, in the initial state, the bubble separation layer exposes the liquid surface of the water seal area. The so-called initial state refers to the state when the gas has not entered from the air inlet pipe or has just started to enter.

[0022] In the utility model, the bubble separation layer exposed to the liquid surface can be used as an additional treatment area, can further separate the large bubbles that cannot be completely separated by the underwater bubble separation layer, effectively shares the work of the underwater bubble separation layer, and significantly improves the overall bubble separation efficiency. In the event of water level fluctuations, abnormal gas pressure and other special circumstances, a small amount of reverse flow or overflow of the water surface gas can be treated again, preventing local gas accumulation and ensuring stable and reliable operation of the device. In addition, the operator can also observe the bubble size, frequency and other information of the exposed part to intuitively judge the gas inflow and bubble separation effect, adjust the operating parameters in a timely manner, find potential problems, and improve the maintainability and overall operating efficiency of the device.

[0023] According to the gas mixing pipeline water seal fire barrier device with liquid level self-adaptive adjustment disclosed by the utility model, a manual valve is arranged on the water supplementing and discharging pipe, which is used for manually controlling water supplementing and discharging in maintenance or emergency.

[0024] In the utility model, when the device needs to be maintained regularly, the internal structure is checked or impurities are cleaned, the water in the device can be conveniently emptied by controlling the drainage through the manual valve, thereby providing convenience for maintenance work. In an emergency, for example, when the liquid level is abnormal due to a fault of the liquid level automatic adjustment system or when the automatic adjustment cannot meet the demand due to sudden changes in the operating environment of the device, the manual valve can enable the operator to manually supplement or discharge water in a timely manner, rapidly adjust the liquid level, avoid serious consequences such as device failure and abnormal system pressure caused by liquid level problems, ensure safe and stable operation of the device, and reduce the risk of accidents.

[0025] The utility model has the advantages that compared with the prior art, the utility model has the following beneficial effects:

[0026] 1) The existing water seal device has a complex structure, which increases equipment cost and maintenance difficulty. The utility model has a clever structure design, and through the cooperation of key components such as the vertical single cylinder, the liquid level regulator and the bubble separation layer, the water seal explosion-proof and liquid level self-adaptive adjustment functions are realized. The overall structure is relatively simple, the complex parts and connection relationships are reduced, the equipment cost is reduced, daily maintenance and repair are facilitated, and the ease of use of the equipment is improved.

[0027] 2) The traditional water seal device has high requirements for the water level control system, and excessive water level or insufficient water level will affect the performance of the device. The utility model is provided with a liquid level regulator, a liquid level adjustment cylinder and a second U-shaped communicating vessel formed by the water seal area, and a liquid level self-adaptive adjustment mechanism that is adapted to the liquid level change of the liquid level adjustment cylinder. The float valve rises and falls with the liquid level, drives the water supplementing and discharging valve body to switch positions, realizes automatic water supplementing and discharging, ensures that the liquid level of the water seal area is always stable at a proper height, effectively reduces the influence of water level fluctuations on the system pressure, ensures stable operation of the device, and reduces the dependence on the complex water level control system.

[0028] 3) Traditional devices may have shortcomings in handling gas bubbles. This invention employs a bubble separation layer formed by stacked pebbles of equal diameter. The pebbles have regular shapes and uniform gap distribution, enabling more stable and efficient separation of large gas bubbles into smaller bubbles. This allows gas to pass through the water seal zone more smoothly, reducing pressure fluctuations caused by bubble bursts and lowering the risk of gas accumulation and explosion. During gas mixing, it also prevents excessively high local gas concentrations, improving the safety of gas transportation and mixing, and enhancing the explosion-proof and explosion-venting capabilities of the device.

[0029] 4) This utility model divides the water seal area into upper and lower zones. The upper mixing zone performs bubble separation and secondary treatment, while the lower single water seal zone can more effectively block gas flames. This partitioned structure optimizes the water seal effect and improves the overall explosion-proof and explosion-venting performance. Compared with the traditional single-structure water seal area, it can more effectively deal with dangerous situations such as gas explosions, providing a more reliable safety guarantee for the coal mine gas utilization process.

[0030] 5) The air inlet pipe connects to the cylindrical shell section of the vertical single-cylinder unit and corresponds to the lower half of the bubble separation layer, which facilitates full contact between the gas and the bubble separation layer, improving bubble separation efficiency. The connecting pipe between the liquid level regulating cylinder and the conical shell section has a downward-sloping structure, which facilitates liquid flow and ensures timely and accurate liquid level regulation. In the initial state, the bubble separation layer is exposed above the water seal zone, which can further separate large bubbles that have not been completely separated by the underwater bubble separation layer, improving the overall bubble separation efficiency. It can also perform secondary treatment of overflowing gas in case of abnormal operation of the unit, preventing local gas accumulation. These special designs enable the unit to better adapt to the complex working conditions in the coal mine gas transportation and blending process, ensuring stable and reliable operation of the unit.

[0031] The following describes in detail the explosion-proof and venting device for gas mixing pipelines with adaptive water level regulation, in conjunction with the embodiments shown in the accompanying drawings and the reference numerals. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the water seal flame arrestor for gas mixing pipeline with adaptive liquid level regulation according to this utility model.

[0033] Figure 2 This is a partially enlarged view of the liquid level adaptive adjustment mechanism of this utility model.

[0034] Figure Labels

[0035] 1 vertical single cylinder; 2 bubble separation layer; 3 air inlet pipe; 4 air outlet pipe; 5 liquid level adjusting cylinder; 6 float valve; 7 water replenishing and discharging valve body; 8 water replenishing and discharging pipe; 9 water replenishing channel; 10 water discharging channel; 11 cylindrical shell part; 12 conical shell part; 13 support frame; 14 manual valve; 15 water seal area; 16 hollow area; 17 explosion venting disc; 18 vertical single cylinder support; 19 liquid level adjusting cylinder support. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0037] As shown in Figure 1 The utility model discloses a kind of gas mixing pipeline water seal fire barrier of liquid level self-adaptive regulation, including vertical single cylinder 1, bubble separation layer 2, air inlet pipe 3, air outlet pipe 4 and liquid level regulator, vertical single cylinder 1 is filled with water body, so that the water seal area 15 located below and the hollow area 16 located above are formed in vertical single cylinder 1 inside;Bubble separation layer 2 is formed by a plurality of cobblestones stacked in water seal area 15, for separating the large air bubble produced by gas gas and water seal contact into small air bubble entering water seal area 15;Air inlet pipe 3 is communicated with the water seal area 15 of vertical single cylinder 1, and forms first U-shaped communicating vessel with water seal area 15;Air outlet pipe 4 one end extends into vertical single cylinder 1 and is communicated with hollow area 16, and the other end extends out of vertical single cylinder 1 outside;Bracket liquid level regulator includes liquid level adjusting cylinder 5 and liquid level self-adaptive regulation mechanism, wherein liquid level adjusting cylinder 5 forms second U-shaped communicating vessel with water seal area 15, and liquid level self-adaptive regulation mechanism is self-adaptively adjusted according to the liquid level change of liquid level adjusting cylinder 5.

[0038] In the utility model, water seal area 15, bubble separation layer 2 and liquid level regulator play an important role. Water seal area 15 can effectively block gas flame and prevent explosion spreading. Bubble separation layer 2 composed of cobblestones can separate large gas bubbles into small ones, reduce pressure fluctuation and explosion risk, avoid local gas concentration being too high, and improve the safety of gas transportation and mixing. Liquid level regulator automatically adds or drains water through liquid level adjusting cylinder 5 and liquid level self-adaptive adjusting mechanism according to the principle of two U-shaped communicating vessels, maintains the stable liquid level of water seal area 15, reduces manual intervention, and ensures the reliable operation of the device. In addition, cobblestones are used as bubble separation layer 2, which has the advantages of convenient material selection, low cost and easy maintenance and replacement. The compact structure of vertical single cylinder 1 makes the device occupy less space and is convenient to install and use in limited environments such as coal mines.

[0039] In the prior art of gas mixing water seal explosion isolation, double-cylinder or multi-cylinder structure is often used to further separate or separate the gas or bubbles passing through the water seal. However, the utility model can realize water seal explosion isolation and explosion relief based on a single cylinder. Because water seal area and cobblestone are used together, explosion isolation and explosion relief can be effectively realized without additional treatment, so more cylinders are not needed.

[0040] As shown in Figure 1 With Figure 2 In a preferred embodiment, the liquid level self-adaptive adjusting mechanism is composed of float valve 6, water supplementing and draining valve body 7 and water supplementing and draining pipe 8. Float valve 6 is placed on the water surface in liquid level adjusting cylinder 5 and can rise and fall with the change of liquid level in liquid level adjusting cylinder 5. When the water level in liquid level adjusting cylinder 5 rises, float valve 6 rises due to the buoyancy, and water supplementing and draining valve body 7 is driven to rise together with float valve 6 because they are connected. Conversely, when the water level in liquid level adjusting cylinder 5 falls, float valve 6 falls under its own gravity, and water supplementing and draining valve body 7 also falls. In this embodiment, float valve 6, water supplementing and draining valve body 7 and water supplementing and draining pipe 8 of the liquid level self-adaptive adjusting mechanism cooperate with each other and can automatically respond to the change of liquid level in liquid level adjusting cylinder 5. Float valve 6 drives water supplementing and draining valve body 7 to move with the change of liquid level, realizes the automatic switching of the communication state between water supplementing and draining pipe 8 and liquid level adjusting cylinder 5, automatically adjusts the liquid level, maintains the stable water level in the device, avoids the influence of too high or too low liquid level on the performance of the device, reduces manual intervention, and ensures the stable and reliable operation of the device.

[0041] In this invention, the water supply and drainage valve body 7 has three states: initial position, drainage position, and water supply position. In the initial position, the water supply and drainage valve body 7 disconnects 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 point the water supply and drainage pipe 8 is connected to the liquid level regulating cylinder 5, thereby realizing the drainage function. When the float valve 6 descends, 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, thereby performing the water supply operation.

[0042] The three states of the water supply and drainage valve body 7 and the switching mechanism that follows the movement of the float valve 6 enable automatic and precise adjustment of the liquid level. The initial position cuts off the connection to 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, connecting the water supply and drainage pipe 8 to the liquid level regulating cylinder 5. This allows for timely discharge of excess water or replenishment of missing water, maintaining a stable liquid level in the water seal zone 15 and ensuring stable operation of the device.

[0043] like Figure 1 As shown, in a preferred embodiment, the connection point between the water supply / drainage pipe 8 and the level regulating cylinder 5 is located below the initial position of the float valve 6. This design effectively prevents water from accidentally flowing into the level regulating cylinder 5 when there is no demand, ensuring a stable initial liquid level and preventing abnormal increases in the liquid level of the water seal zone 15 from affecting the operation of the device. When the liquid level in the vertical single cylinder 1 drops, the float valve 6 descends, causing the water supply / drainage valve body 7 to switch to the water supply position. At this time, the lower water supply / drainage pipe 8 can accurately supply water, allowing the liquid level in the water seal zone 15 to recover in a timely manner, ensuring the explosion-proof and explosion-venting performance. When the liquid level rises and water is drained, because the connection point is below the initial position of the float valve 6, backflow of water in the water supply / drainage pipe 8 can be prevented, ensuring smooth drainage and maintaining the stability and reliability of the level regulating system.

[0044] In this invention, the water supply and drainage pipe 8 is provided with a valve cavity, and the water supply and drainage valve body 7 can slide within the valve cavity. The water supply and drainage valve body 7 is provided with a water supply channel 9 and a drainage channel 10. When the water supply and drainage valve body 7 is in the drainage position, the drainage channel 10 is connected to the water supply and drainage pipe 8; when it is in the water supply position, the water supply channel 9 is connected to the water supply and drainage pipe 8.

[0045] This design allows the water supply and drainage valve body 7 to precisely switch between drainage and water supply positions, ensuring the device functions correctly under different liquid levels. When the liquid level in the device is too high and drainage is required, the drainage channel 10 connects to the water supply and drainage pipe 8, allowing excess water to be discharged promptly and preventing adverse effects from excessively high liquid levels. Conversely, when the liquid level is too low and water needs to be added, the water supply channel 9 connects to the water supply and drainage pipe 8, enabling precise water replenishment and maintaining a stable liquid level. Compared to other connection methods, this structure effectively avoids mutual interference between drainage and water supply processes, greatly improving the accuracy and reliability of liquid level regulation, ensuring stable operation of the device, and reducing the probability of malfunctions.

[0046] In the utility model, the size of the float valve 6 is matched with the inner diameter of the liquid level adjusting cylinder 5, and this matching relationship is extremely crucial. Because if the float valve 6 shakes left and right during the lifting process, it may interfere with the communication state between the supplement and drainage pipe 8 and the drainage channel 10 and the water supplement channel 9. For example, when the float valve 6 shakes too much, it may not be able to accurately dock the channel in the case of needing to communicate, causing the drainage or water supplement function to be unable to normally play, and further affecting the water level regulation precision and stability of the liquid level self-adaptive adjusting mechanism. Ensuring the matching of the float valve 6 and the inner diameter of the liquid level adjusting cylinder 5 can guarantee the stable and reliable operation of the device.

[0047] In addition, in order to further ensure the efficiency and stability of the operation of the device, the channel inner diameter of the water supplement channel 9 and the drainage channel 10 is matched with the pipe diameter of the supplement and drainage pipe 8. The core significance of such design lies in that when the water supplement channel 9 or the drainage channel 10 is respectively communicated with the supplement and drainage pipe 8, seamless docking can be achieved, effectively avoiding the leakage phenomenon at the communication place, so as to effectively guarantee the efficient operation of the water supplement and drainage process.

[0048] As shown in Figure 1 In a preferred embodiment, the vertical single cylinder 1 is composed of a cylindrical shell part 11 and a conical shell part 12 connected at the bottom of the cylindrical shell part 11; the water seal area 15 covers the entire conical shell part 12 and part of the cylindrical shell part 11; the liquid level adjusting cylinder 5 is communicated with the conical shell part 12 of the vertical single cylinder 1, and from the communication position of the conical shell part 12 and the liquid level adjusting cylinder 5, the communication pipe between the two is in a downward inclined structure, and the inclination angle of the communication pipe is determined according to the actual situation, so as to ensure that the water flow can meet the demand of rapid regulation of liquid level, and will not cause too violent fluctuation of liquid level due to too large flow.

[0049] In the above embodiment, the water seal area 15 covers the conical shell part 12 and part of the cylindrical shell part 11, which fully utilizes the structure of the vertical single cylinder 1, expands the water seal area, and can more effectively block the gas flame and improve the explosion-proof capacity. At the same time, the downward inclined communication pipe between the liquid level adjusting cylinder 5 and the conical shell part 12 makes the water flow more smoothly between the two by the action of gravity, and when the liquid level of the water seal area 15 changes, the water can quickly flow to the liquid level adjusting cylinder 5 or be supplemented from the liquid level adjusting cylinder 5, timely balancing the liquid level, guaranteeing the stability of the liquid level of the device, and further improving the reliability of the overall operation.

[0050] As shown in Figure 1As shown, inside the vertical monotube 1, a support frame 13 is provided at the connection between the conical shell section 12 and the cylindrical shell section 11. Within the water seal zone 15, several pebbles are stacked on the support frame 13, forming a bubble separation layer 2. This structure divides the water seal zone 15 into two parts: the upper part is a mixing zone where water seal and bubble separation are mixed, and the lower part is a water seal zone consisting solely of water.

[0051] This design has several advantages: First, the bubble separation layer 2 can separate large bubbles generated by gas into smaller bubbles, allowing the gas to pass through the water seal zone 15 more smoothly, reducing pressure fluctuations caused by bubble rupture, and thus reducing the risk of gas accumulation and explosion; Second, the partitioned structure optimizes the water seal effect. The lower single-water seal zone 15 can more effectively block gas flames, while the upper mixing zone further processes the bubbles, improving the overall explosion-proof and explosion-venting performance; Third, the support frame 13 facilitates the stacking and fixing of pebbles, enhancing the stability and reliability of the device structure.

[0052] like Figure 1 As shown in this embodiment of the invention, the vertical single-cylinder 1 and the liquid level regulating cylinder 5 are fixed by the vertical single-cylinder support 18 and the liquid level regulating cylinder support 19, respectively. This effectively improves the stability and reliability of the device, enabling both to maintain precise position and orientation in complex coal mine environments, such as vibration and airflow impact, avoiding component damage and loose connections. Stable installation ensures the normal operation of the water seal zone 15 and the liquid level regulating system, preventing water seal leakage and abnormal liquid level regulation, and ensuring that the water seal flame arrester in the gas blending pipeline continues to play its role in blocking gas flames and regulating liquid levels, providing strong support for the safety of coal mine gas transportation and blending operations.

[0053] like Figure 1 As shown, in a preferred embodiment, a rupture disc 17 with a vent is provided above the cylindrical shell portion 11 of the vertical monotube 1. When the pressure inside the vertical monotube 1 exceeds a safety threshold, the rupture disc 17 with the vent rupture rapidly ruptures, releasing the internal pressure of 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.

[0054] like Figure 1 As shown, the air inlet pipe 3 connects to the cylindrical shell portion 11 of the vertical single-cylinder body 1, and the connection point directly corresponds to the lower half of the bubble separation layer 2. After entering through this location, the gas can directly and fully contact the bubble separation layer 2. This facilitates the bubble separation layer 2 in quickly separating large bubbles generated by the gas contacting the sealing water into smaller bubbles, allowing the gas to pass through the water seal zone 15 more smoothly, reducing pressure fluctuations caused by bubble rupture, and lowering the risk of gas accumulation and explosion. During the gas mixing process, this design also avoids excessively high local gas concentrations, effectively improving the safety of gas transportation and mixing, while better utilizing the explosion-proof and explosion-venting functions of the device.

[0055] In the utility model, the cobblestones are equidiameter cobblestones, the equidiameter cobblestones are regular in shape, the gaps between them are more uniform when stacking to form the bubble separation layer, can more stably and efficiently cut the large bubbles generated by the gas into small bubbles, make the gas more stable when passing through the water seal area 15, further reduce the risk of pressure fluctuation and gas accumulation explosion. On the other hand, compared with irregular cobblestones, the equidiameter cobblestones perform better in absorbing the shock of detonation energy, can more effectively buffer the energy when the gas explodes, guarantee the stability and safety of the device, provide more reliable technical support for the water seal fireproof explosion prevention.

[0056] As shown in Figure 1 In the initial state, the bubble separation layer 2 partially exposes the liquid level of the water seal area 15. The exposed part can play an important role as an additional treatment area, which can further separate the large bubbles that the underwater bubble separation layer 2 fails to completely separate, effectively share the work of the underwater bubble separation layer 2, thereby significantly improving the overall bubble separation efficiency. When encountering water level fluctuation, abnormal gas pressure and other special conditions, a small amount of gas flowing in the opposite direction or overflowing the water surface can also be treated by this part of the bubble separation layer, thereby preventing local gas accumulation and ensuring stable and reliable operation of the device. In addition, the operator can also observe the bubble size, frequency and other conditions of the exposed part to intuitively judge the gas inflow and bubble separation effect, so as to timely adjust the operating parameters, find potential problems, and improve the maintainability and overall operating efficiency of the device.

[0057] As shown in Figure 1 In a preferred embodiment, a manual valve 14 is provided on the supplementary drain pipe 8, which can be used to control the drainage when the device needs to be periodically maintained, checked for internal structure or cleaned of impurities, so as to facilitate the emptying of water in the device and provide convenience for maintenance work. In an emergency situation, such as when the liquid level is abnormal due to a failure of the automatic liquid level adjustment system or sudden changes in the operating environment of the device, the automatic adjustment cannot meet the demand, the manual valve 14 can allow the operator to manually supplement or drain water in time, quickly adjust the liquid level, avoid serious consequences such as device failure, system pressure abnormality and other serious consequences caused by liquid level problems, and ensure the safe and stable operation of the device and reduce the risk of accidents.

[0058] The working principle of the utility model is as follows:

[0059] The gas mixing pipeline water seal fire barrier works, and the gas enters the water seal area 15 of the vertical single cylinder 1 through the air inlet pipe 3, the air inlet pipe 3 and the water seal area 15 form a first U-shaped communicating vessel, and the gas is ensured to enter smoothly. The bubble separation layer 2 formed by the equal-diameter cobble stacking 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 through the water seal area 15 stably, reduces the pressure fluctuation and explosion risk, and avoids that the local gas concentration is too high. The treated gas rises to the hollow area and is discharged through the air outlet pipe 4. The liquid level regulator realizes automatic liquid level adjustment by using the second U-shaped communicating vessel formed by the liquid level adjusting cylinder 5 and the water seal area 15 and the liquid level adaptive adjustment mechanism. When the liquid level in the liquid level adjusting cylinder 5 changes, the float valve 6 rises and falls, drives the water supplementing and discharging valve body 7 to switch positions, so that the water supplementing and discharging pipe 8 is connected with the liquid level adjusting cylinder 5 through the water discharging channel 10 or the water supplementing channel 9, water is discharged or supplemented, and the liquid level of the water seal area 15 is maintained stable. In special cases, such as maintenance or emergency, manual water supplementing or discharging operation can be performed through the manual valve 14 on the water supplementing and discharging pipe 8, so that the device can run stably.

[0060] The utility model discloses through the cooperation of each part, effectively solved the existing water seal fire barrier complex structure, water level control harsh and the problem of difficult maintenance, significantly improved the safety and reliability of gas mixing pipeline, reduced the maintenance cost, ensured the safety of gas utilization process.

[0061] Finally, it is pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited, although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, and they should be covered in the claim range of the utility model.

Claims

1. A gas mixing pipeline water seal fire arrester with self-adapting liquid level regulation, characterized in that, The utility model relates to a vertical single-cylinder water seal device for gas drainage, comprising: a vertical single-cylinder (1) filled with water, forming a lower water seal area (15) and an upper hollow area (16) inside the vertical single-cylinder (1); a bubble separation layer (2) formed by a plurality of pebbles stacked in the water seal area (15) for separating large bubbles into small bubbles when gas gas in the water seal area (15) contacts with water; an inlet pipe (3) connected to the 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 outlet pipe (4) extending into the hollow area (16) inside the vertical single-cylinder (1) at one end and extending out of the vertical single-cylinder (1) at the other end; a liquid level regulator comprising a liquid level adjusting cylinder (5) and a liquid level self-adaptive adjusting mechanism, wherein the liquid level adjusting cylinder (5) forms a second U-shaped communicating vessel with the water seal area (15), and the liquid level self-adaptive adjusting mechanism adjusts the liquid level according to the change of the liquid level in the liquid level adjusting cylinder (5).

2. The liquid level self-adapting regulated gas-mixing pipeline water seal flame arrestor according to claim 1, characterized in that, The liquid level self-adaptive adjusting mechanism comprises a float valve (6), a water supplementing and draining valve body (7) and a water supplementing and draining pipe (8), wherein the float valve (6) is arranged in the liquid level adjusting cylinder (5) and can rise and fall with the liquid level in the liquid level adjusting cylinder (5), the water supplementing and draining valve body (7) is connected to the float valve (6) so as to rise and fall with the float valve (6), and the water supplementing and draining valve body (7) has: an initial position, at which the water supplementing and draining valve body (7) cuts off the communication between the water supplementing and draining pipe (8) and the liquid level adjusting cylinder (5); a water draining position, at which the water supplementing and draining valve body (7) switches from the initial position to the water draining position with the rising of the float valve (6) so as to communicate the water supplementing and draining pipe (8) with the liquid level adjusting cylinder (5) to drain water; a water supplementing position, at which the water supplementing and draining valve body (7) switches from the initial position to the water supplementing position with the falling of the float valve (6) so as to communicate the water supplementing and draining pipe (8) with the liquid level adjusting cylinder (5) to supplement water.

3. The liquid level self-adapting regulated gas-mixing pipeline water seal flame arrestor according to claim 2, characterized in that, The communication position between the water supplementing and draining pipe (8) and the liquid level adjusting cylinder (5) is below the initial position of the float valve (6).

4. The liquid level self-adapting regulated gas-mixing pipeline water seal flame arrestor according to claim 3, characterized in that, The water supplementing and draining pipe (8) is provided with a valve cavity, the water supplementing and draining valve body (7) is arranged to slide along the valve cavity, and the water supplementing and draining valve body (7) is provided with a water supplementing passage (9) and a water draining passage (10), the water draining passage (10) communicates with the water supplementing and draining pipe (8) when the water supplementing and draining valve body (7) is in the water draining position, and the water supplementing passage (9) communicates with the water supplementing and draining pipe (8) when the water supplementing and draining valve body (7) is in the water supplementing position.

5. The liquid level self-adapting regulated gas-mixing pipeline water seal flame arrestor according to claim 4, characterized in that, The vertical single-cylinder (1) comprises a cylindrical shell part (11) and a conical shell part (12) connected to the bottom of the cylindrical shell part (11), and the water seal area (15) covers the whole conical shell part (12) and part of the cylindrical shell part (11); The liquid level adjusting cylinder (5) communicates with the water seal area (15) from the conical shell part (12) of the vertical single-cylinder (1), and the communication pipe between the liquid level adjusting cylinder (5) and the conical shell part (12) is an inclined structure from top to bottom.

6. The liquid level self-adapting regulated gas-mixing pipeline water seal flame arrestor according to claim 5, characterized in that, The support frame (13) is arranged at the joint of the conical shell part (12) and the cylindrical shell part (11) in the vertical single-cylinder (1), and the pebbles are stacked on the support frame (13) in the water seal area (15) to form the bubble separation layer (2), so that the water seal area (15) is divided into an upper mixed area of mixed water seal and bubble separation and a lower water seal area of single water seal.

7. The liquid level self-adapting regulated gas-mixing pipeline water seal flame arrestor according to claim 6, characterized in that, The air inlet pipe (3) is communicated with the cylindrical shell part (11) of the vertical single-cylinder (1), and the communication position directly corresponds to the lower half area of the bubble separation layer (2).

8. The liquid level self-adapting regulated gas-mixing pipeline water seal flame arrestor according to claim 7, characterized in that, The pebbles are equidiameter pebbles.

9. The liquid level self-adapting regulated gas-mixing pipeline water seal flame arrestor according to claim 8, characterized in that, In the initial state, the bubble separation layer (2) exposes the liquid surface of the water seal area (15).

10. The liquid level self-adapting regulated gas-mixing pipeline water seal flame arrestor according to claim 9, wherein, A manual valve (14) is arranged on the water supplement and drainage pipe (8) for manually controlling water supplement and drainage in maintenance or emergency.

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