Coal rock gas pressure-stabilizing discharging and mining device and coal rock gas pressure-stabilizing discharging and mining method

Abstract

The invention provides a coal rock gas pressure stabilizing discharging and mining device and method, and belongs to the technical field of oil and gas exploiting.The device comprises a gas conveying pipe, pressure stabilizing tanks, a gas-liquid separation mechanism, a first filtering mechanism and a second filtering mechanism, a plurality of branch pipes are arranged on the gas conveying pipe in parallel, and each branch pipe is provided with the corresponding pressure stabilizing tank; the output end of the gas conveying pipe and the output ends of the branch pipes are all communicated with a gas-liquid separation mechanism, a first filtering mechanism used for filtering gas is arranged above the gas-liquid separation mechanism, and a second filtering mechanism used for filtering waste liquid is arranged below the gas-liquid separation mechanism. The gas-liquid separation mechanism is arranged, the multiple cooling plates are arranged in the gas-liquid separation mechanism in a staggered mode, the water vapor separation efficiency is effectively improved, the scraper mechanisms are arranged on the cooling plates, water condensed on the cooling plates and impurities mixed in the water are scraped off through the scraper mechanisms, then impurities are prevented from remaining on the cooling plates, and the water vapor separation efficiency is improved. And the gas-liquid separation mechanism can be effectively used for a long time.

Description

Technical Field

[0001] This invention belongs to the field of oil and gas extraction technology, specifically relating to a coal and rock gas pressure stabilization and drainage device and method. Background Technology

[0002] Coalbed methane is a new type of natural gas resource that falls between conventional gas and coalbed methane. It is characterized by the coexistence of conventional and unconventional reservoirs, the symbiosis of free gas and adsorbed gas, and the complementary accumulation and orderly distribution of endogenous and exogenous gas. Pressure stabilization devices are required to ensure high production when mining coalbed methane.

[0003] According to CN110987604B, the application titled "Air Pressure Stabilization System and Method for Controlling Pore Water Pressure in Coal and Rock Mass Creep Tests" belongs to the field of coal seam testing technology. The system mainly consists of a gas cylinder, an outlet pressure reducing valve, an automatic regulating solenoid valve, a sensor, a signal processor, a pneumatic valve, an exhaust port, and a reaction vessel. This system utilizes the concept of feedback regulation, transmitting the air pressure signal inside the reaction vessel through the sensor. Simultaneously, the signal processor converts the air pressure signal into control commands to control the opening and closing of the automatic regulating solenoid valve. The automatic regulating solenoid valve, in turn, controls the opening and closing of the pneumatic valve, thereby controlling the pressure inside the reaction vessel. This system is reliable in operation, simple in structure, and convenient to operate, providing stable confining pressure for creep tests of coal and rock masses under water-based media.

[0004] Currently, pressure stabilization devices in the gas extraction process generally use pressure stabilizing tanks to regulate the gas extraction pressure. During drainage, the oil and gas also contain impurities such as water vapor and coal dust. Therefore, it is necessary to remove the water vapor and filter the impurities to obtain relatively clean oil and gas. Existing devices for separating water vapor from oil and gas generally use gas-liquid separators. Their principle is mainly to use a low-temperature environment to cause water vapor in the oil and gas to condense into water, thus separating it from the oil and gas. However, in actual use, because the oil and gas contain impurities such as coal dust, when the water vapor condenses, the water contains impurities such as coal dust, becoming wastewater. This wastewater easily traps impurities inside the gas-liquid separator as it flows along its interior. Long-term use can lead to impurity accumulation, affecting the gas-liquid separation effect and resulting in incomplete separation of water vapor from the oil and gas. This causes problems for subsequent filtration work and further affects the quality of the collected oil and gas.

[0005] Therefore, it is necessary to provide a coal and rock gas pressure stabilization and drainage device to solve the problems mentioned in the background art. Summary of the Invention

[0006] To overcome the problem of incomplete water vapor separation in existing oil and gas systems, which causes difficulties in subsequent filtration and further affects the quality of collected oil and gas, this invention provides a coal and rock gas pressure stabilization and drainage device and method. This invention is equipped with a gas-liquid separation mechanism, in which multiple cooling plates are staggered. This increases the contact area between the oil and gas and the cooling plates after the oil and gas enters the gas-liquid separation mechanism, allowing water vapor in the oil and gas to fully contact the cooling plates and condense into water, effectively improving the water vapor separation efficiency. A scraper mechanism is installed on the cooling plates to scrape away the water condensed on the cooling plates and impurities mixed in with the water, thus preventing impurities from remaining on the cooling plates and enabling the gas-liquid separation mechanism to be used effectively for a long time.

[0007] The technical solution adopted in this invention is as follows: A coal and rock gas pressure stabilization and drainage device includes a gas transmission pipe, a pressure stabilizing tank, a gas-liquid separation mechanism, a first filter mechanism, and a second filter mechanism. Multiple branch pipes are connected in parallel on the gas transmission pipe, and a pressure stabilizing tank is installed on each branch pipe. The output end of the gas transmission pipe and the output ends of the multiple branch pipes are connected to the gas-liquid separation mechanism. A first filter mechanism for filtering gas is installed above the gas-liquid separation mechanism, and a second filter mechanism for filtering waste liquid is installed below the gas-liquid separation mechanism. The gas-liquid separation mechanism includes at least a housing and a cooling plate. Multiple cooling plates are arranged in an alternating and inclined manner in the housing. Cooling pipes are arranged in the cooling plates. The cooling pipes are connected to an external cooling circulation mechanism. A scraper mechanism is also slidably arranged on the housing. The scraper mechanism is driven by a drive mechanism.

[0008] The scraper mechanism includes at least a slide block, a slider, and a scraper. The outer casing is provided with multiple sliding grooves. The slide block slides along the sliding grooves. The upper and lower ends of the slide block are slidably provided with sliders. The scraper is fixedly provided on the sliders.

[0009] The slider is fixedly provided with a retaining plate at the end away from the cooling plate. The retaining plate is slidably provided with support plates at its upper and lower ends by a spring. A slide rail is provided on the outer shell. The left and right ends of the slide rail are provided with slots. The two support plates are respectively inserted into the two slots. The support plates are inserted into the slide rail and slide along the corresponding slide rail.

[0010] The driving mechanism includes at least a driving seat and guide rods. Two guide rods are fixedly mounted on the driving seat. Multiple slide rails are provided on the outer casing. Two straight grooves are provided on the slide block of the scraper mechanism in the gas-liquid separation mechanism. An inclined groove is provided on the slider of the scraper mechanism in the gas-liquid separation mechanism. The guide rods are inserted into the slide rails and slide along the slide rails. The two guide rods pass through the two straight grooves and are inserted into the inclined grooves on the sliders located at both ends of the slide block.

[0011] The drive seats are multiple in number and are fixedly connected by the same drive rod; a lead screw is rotatably mounted on the outer casing, and the drive rod has a thread that mates with the lead screw.

[0012] The outer shell is provided with a water collection channel, the output end of the cooling plate is located in the water collection channel, the output end of the water collection channel is provided with a water collection tank, the bottom of the water collection tank is inclined, the water collection tank is connected to the second filter mechanism through a water supply pipe, the second filter mechanism is connected to an external wastewater purification mechanism, and the wastewater purification mechanism is connected to the cooling circulation mechanism.

[0013] The output end of the cooling plate is rotatably equipped with multiple striking mechanisms; each striking mechanism includes a turntable and a striking block. Multiple limiting grooves are formed along the circumference of the turntable, and a striking block is rotatably arranged in the limiting groove. A spring is provided between the striking block and the turntable. The output end of the striking block is tilted.

[0014] A stop bar is fixedly installed at the output end of the cooling plate. The stop bar blocks the striking block and drives the striking block to rotate.

[0015] A drainage method for a coal gas stabilizing and drainage device, comprising the following specific steps: The oil and gas are stabilized and discharged through a pressure stabilizing tank. The collected oil and gas are then fed into a gas-liquid separation mechanism to remove water vapor. The cooling plates in the gas-liquid separation mechanism are cleaned by a scraper mechanism. The dehydrated oil and gas are then fed into a first filtration mechanism for filtration and collection. The wastewater is fed into a second filtration mechanism for preliminary filtration. The filtered wastewater is then purified by a wastewater purification mechanism and fed into a cooling circulation mechanism for reuse.

[0016] The beneficial effects of this invention are: In this invention, a gas-liquid separation mechanism is provided, in which multiple cooling plates are arranged alternately. This increases the contact area between the oil and gas and the cooling plates after the oil and gas enter the gas-liquid separation mechanism, thereby allowing the water vapor in the oil and gas to fully contact the cooling plates and condense into water, effectively improving the water vapor separation efficiency.

[0017] The present invention provides a scraper mechanism on the cooling plate to scrape away the water condensed on the cooling plate and the impurities mixed in the water, thereby preventing impurities from remaining on the cooling plate and enabling the gas-liquid separation mechanism to be used effectively for a long time.

[0018] The present invention provides a striking mechanism on the cooling plate. The striking mechanism can strike the scraper after the scraper has removed water and impurities from the cooling plate, causing the scraper to vibrate and shake off the impurities attached to the scraper, keeping the scraper clean and further improving the cleaning effect of the scraper on the cooling plate. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the gas-liquid separation mechanism in this invention; Figure 3 for Figure 2 Enlarged schematic diagram of part A; Figure 4 This is a schematic diagram of the scraper mechanism and the drive mechanism in this invention; Figure 5 This is a schematic diagram of the striking mechanism in this invention; In the diagram, the reference numerals are: 1. Gas pipeline; 2. Pressure stabilizing tank; 3. Gas-liquid separation mechanism; 4. Filter mechanism one; 5. Filter mechanism two; 11. Responsible for; 31. Outer casing; 311. Slide groove; 312. Slide rail one; 313. Slot; 314. Slide rail two; 315. Lead screw; 316. Water collection channel; 317. Water collection trough; 318. Water supply pipe; 32. Cooling plate; 321. Baffle bar; 33. Scraper mechanism; 331. Slide block; 332. Slider; 333. Scraper; 334. Clamping plate; 335. Support plate; 336. Straight groove; 337. Inclined groove; 34. Drive mechanism; 341. Drive base; 342. Guide rod; 35. Drive lever; 36. Striking mechanism; 361. Turntable; 362. Striking block; 363. Spring II. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0023] Example 1: To overcome the problem of incomplete water vapor removal from existing oil and gas products, which causes difficulties in subsequent filtration and further affects the quality of the collected oil and gas, this invention provides... Figures 1-5 The invention discloses a coal gas pressure stabilization and drainage device and method. It is equipped with a gas-liquid separation mechanism, in which multiple cooling plates are staggered to increase the contact area between the oil and gas and the cooling plates after entering the mechanism. This allows water vapor in the oil and gas to fully contact the cooling plates and condense into water, effectively improving the water vapor removal efficiency. A scraper mechanism is also provided on the cooling plates to remove the water condensed on them, as well as impurities mixed in with the water, preventing impurities from remaining on the cooling plates and ensuring the long-term effective use of the gas-liquid separation mechanism.

[0024] A coal and rock gas pressure stabilization and drainage device includes a gas transmission pipe 1, a pressure stabilizing tank 2, a gas-liquid separation mechanism 3, a first filter mechanism 4, and a second filter mechanism 5. Multiple branch pipes 11 are connected in parallel on the gas transmission pipe 1, and a pressure stabilizing tank 2 is installed on each branch pipe 11. The output end of the gas transmission pipe 1 and the output ends of the multiple branch pipes 11 are connected to the gas-liquid separation mechanism 3. A first filter mechanism 4 for filtering gas is installed above the gas-liquid separation mechanism 3, and a second filter mechanism 5 for filtering waste liquid is installed below the gas-liquid separation mechanism 3. The gas-liquid separation mechanism 3 includes at least a housing 31 and a cooling plate 32. Multiple cooling plates 32 are arranged in an alternating and inclined manner in the housing 31. Cooling pipes are arranged in the cooling plates 32. The cooling pipes are connected to an external cooling circulation mechanism. A scraper mechanism 33 is also slidably arranged on the housing 31. The scraper mechanism 33 is driven by a drive mechanism 34.

[0025] In this invention, both the first filter mechanism 4 and the second filter mechanism 5 are existing technologies and will not be further described in this invention.

[0026] like Figure 1As shown, in the implementation of this invention, the pressure of the gas pipeline 1 is regulated by the pressure stabilizing tank 2, thereby achieving stable oil and gas extraction. Then, the extracted oil and gas are introduced into the gas-liquid separation mechanism 3. The temperature of the cooling plate 32 is reduced by the cooling circulation mechanism and cooling pipe. Then, the staggered cooling plates 32 block the oil and gas. When the oil and gas come into contact with the cooling plate 32, the internal water vapor condenses on the cooling plate, thereby achieving dehydration of the oil and gas.

[0027] This invention achieves stable pressure extraction of oil and gas through a pressure stabilizing tank 2. The extracted oil and gas are then fed into a gas-liquid separation mechanism 3, where water vapor is removed. A scraper mechanism 33 cleans the cooling plate 32 in the gas-liquid separation mechanism 3 to prevent wastewater and impurities from remaining on the cooling plate 32 and affecting the dehydration efficiency. The dehydrated oil and gas are then fed into a first filtration mechanism 4 for filtration and collection, while the wastewater is fed into a second filtration mechanism 5 for preliminary filtration. The filtered wastewater is then purified by a wastewater purification mechanism and fed into a cooling circulation mechanism for reuse, thereby preventing resource waste.

[0028] Example 2: Based on Embodiment 1, in this embodiment, preferably, the scraper mechanism 33 includes at least a slide block 331, a slider 332, and a scraper 333. The outer shell 31 is provided with a plurality of sliding grooves 311. The slide block 331 slides along the sliding grooves 311. The slider 332 is slidably arranged at the upper and lower ends of the slide block 331. The scraper 333 is fixedly arranged on the slider 332.

[0029] Preferably, a retaining plate 334 is fixedly provided at the end of the slider 332 away from the cooling plate 32, and a support plate 335 is slidably provided at the upper and lower ends of the retaining plate 334 by a spring; a slide rail 312 is provided on the outer shell 31, and a slot 313 is provided at the left and right ends of the slide rail 312. The two support plates 335 are respectively inserted into the two slots 313, and the support plates 335 are inserted into the slide rail 312 and slide along the corresponding slide rail 312.

[0030] Preferably, the drive mechanism 34 includes at least a drive seat 341 and guide rods 342. Two guide rods 342 are fixedly mounted on the drive seat 341. Multiple slide rails 314 are provided on the outer shell 31. Two straight grooves 336 are provided on the slide block 331 of the scraper mechanism 33 in the gas-liquid separation mechanism 3. Inclined grooves 337 are provided on the slider 332 of the scraper mechanism 33 in the gas-liquid separation mechanism 3. The guide rods 342 are inserted into the slide rails 314 and slide along the slide rails 314. The two guide rods 342 pass through the two straight grooves 336 and are inserted into the inclined grooves 337 on the sliders 332 located at both ends of the slide block 331.

[0031] like Figure 3 andFigure 4 As shown, in the initial state of implementation, the support plate 335 is engaged in the slot 313 at the left end of the slide rail 312, that is, the positions of the slide block 331 and the slider 332 are restricted. Then, the drive seat 341 is driven to slide, which in turn drives the guide rod 342 to slide, thereby causing the guide rod 342 to slide along the slide rail 314 and the straight groove 336. At this time, because the positions of the slide block 331 and the slider 332 are restricted, the guide rod 342 will not drive the slide block 331 to slide. Subsequently, the guide rod 342 slides along the inclined groove 337, thereby driving the slider 332 to slide along the slide block 331 and drive the locking plate 334 to slide. When the guide rod 342 slides to the end of the inclined groove 337, The support plate 335 disengages from the slot 313 and drives the scraper 333 to slide and adhere to the cooling plate 32. At this time, the positions of the slide block 331 and the slider 332 are no longer restricted. The drive seat 341 slides, causing the slide block 331 to slide together, so that the scraper 333 slides along the cooling plate 32 and scrapes off the condensed water and impurities mixed in the water. When the slider 332 slides, the support plate 335 located on the side of the slot 334 near the cooling plate 32 is pressed and slides into the slot 334. Then, when the slide block 331 slides to the end of the groove 311, that is, when the scraper 333 disengages from the cooling plate 32, the support plate 335 located on the side of the slot 334 near the cooling plate 32... 5. Under the action of spring one, the slide block 331 is pressed into the slot 313 at the right end of slide rail one 312, thus re-defining the positions of slide block 331 and slider 332. Then, the drive seat 341 is driven to reset and slide, so that the guide rod 342 slides along slide rail two 313 and straight groove 336. At this time, slide block 331 will not slide with the sliding of guide rod 342. Then, guide rod 342 slides along inclined groove 337, thereby driving slider 332 to slide along slide block 331 and drive the locking plate 334 to slide. When the guide rod 342 slides to the end of inclined groove 337, support plate 335 disengages from the locking range of slot 331 and drives slide plate 333 to slide away from cooling plate 32. When the slider 332 slides, the support plate 335 on the side of the clamping plate 334 away from the cooling plate 32 is pressed and slides into the clamping plate 334. Then, the drive seat 341 resets the slide 331. After resetting, the support plate 335 on the side of the clamping plate 334 away from the cooling plate 32 is engaged in the slot 313 at the left end of the slide rail 312 under the action of the spring. That is, the scraper mechanism 33 returns to the initial state. This cycle is repeated so that when the scraper 333 slides down along the cooling plate 32, it can stick to the cooling plate 32 to scrape the cooling plate 32. When it slides up along the cooling plate 32, it can disengage from the cooling plate 32 and thus not scrape the cooling plate 32.

[0032] In other words, when the scraper 333 scrapes the cooling plate 32, the scraping direction is always from top to bottom of the cooling plate 32. This means that the scraped impurities and water can be collected through the water collection channel 316 and the water collection tank 317, thereby ensuring that no impurities remain on the cooling plate 32 and further improving the oil and gas dehydration efficiency of the gas-liquid separation mechanism 3.

[0033] Preferably, there are multiple drive seats 341, and the multiple drive seats 341 are fixedly connected by the same drive rod 35; a lead screw 315 is rotatably provided on the outer shell 31, and the drive rod 35 is provided with a thread that cooperates with the lead screw 315.

[0034] like Figure 2 As shown, in this invention, multiple drive seats 341 are fixedly connected by the same drive rod 35; The lead screw 315 is rotatably connected to the housing 31, and the drive rod 35 is threadedly connected to the lead screw 315. The lead screw 315 is driven by a motor.

[0035] Preferably, the outer shell 31 is provided with a water collection channel 316, the output end of the cooling plate 32 is located in the water collection channel 316, the output end of the water collection channel 316 is provided with a water collection trough 317, the bottom of the water collection trough 317 is inclined, the water collection trough 317 is connected to the filter mechanism 5 through a water supply pipe 318, the filter mechanism 5 is connected to an external wastewater purification mechanism, and the wastewater purification mechanism is connected to the cooling circulation mechanism.

[0036] In this invention, the external wastewater purification mechanism and cooling circulation mechanism are existing technologies and will not be further described in this invention. In this invention, when the scraper 333 scrapes the cooling plate 32, the scraping direction is always from top to bottom of the cooling plate 32. That is, the scraped impurities and water can be collected through the water collection channel 316 and the water collection tank 317, thereby ensuring that no impurities remain on the cooling plate 32, further improving the oil-gas dehydration efficiency of the gas-liquid separation mechanism 3.

[0037] Preferably, the output end of the cooling plate 32 is rotatably provided with a plurality of striking mechanisms 36; each striking mechanism 36 includes a turntable 361 and a striking block 362, the turntable 361 is provided with a plurality of limiting grooves along the circumference, the striking block 362 is rotatably arranged in the limiting grooves, and a spring 363 is provided between the striking block 362 and the turntable 361. Preferably, the output end of the striking block 362 is tilted.

[0038] Preferably, a stop bar 321 is fixedly provided at the output end of the cooling plate 32, the stop bar 321 blocking the striking block 362 and driving the striking block 362 to rotate.

[0039] likeFigure 5 As shown, in the implementation of the present invention, when the scraper mechanism 33 slides to the output end of the cooling plate 32, the scraper 333 contacts the striking block 362 and drives the striking block 362 to slide and drive the turntable 361 to rotate. The rotation of the turntable 361 further drives the remaining striking blocks 362 to rotate. At this time, the striking block 362 located on the back side of the scraper 333 is restricted by the stop rod 321 to rotate along the limiting groove and squeeze the second spring 363. As the turntable 361 rotates, the striking block 362 slides along the stop rod 321 and disengages from the stop rod 321. Subsequently, the striking block 362 is reset under the action of the second spring 363 and strikes the scraper 333, causing the scraper 333 to vibrate, thereby shaking off the water and impurities remaining on the scraper 333 and ensuring that the scraper 333 remains clean.

[0040] This invention provides a drainage method for a coal gas stabilizing and drainage device, the specific steps of which are as follows: The oil and gas are stabilized and discharged through the pressure stabilizing tank 2. The collected oil and gas are then passed into the gas-liquid separation mechanism 3 to remove water vapor. The cooling plate 32 in the gas-liquid separation mechanism 3 is cleaned by the scraper mechanism 33. The dehydrated oil and gas are then passed into the first filtration mechanism 4 for filtration and collection. The wastewater is passed into the second filtration mechanism 5 for preliminary filtration. The filtered wastewater is then purified by the wastewater purification mechanism and passed into the cooling circulation mechanism for reuse.

[0041] like Figure 1 As shown, in the implementation of this invention, the pressure of the gas pipeline 1 is regulated by the pressure stabilizing tank 2 installed on the branch pipe 11, thereby achieving stable oil and gas extraction. Then, the extracted oil and gas is introduced into the gas-liquid separation mechanism 3. The temperature of the cooling plate 32 is reduced by the cooling circulation mechanism and cooling pipe. Then, the staggered cooling plates 32 block the oil and gas. When the oil and gas come into contact with the cooling plate 32, the internal water vapor is condensed on the cooling plate, thereby achieving dehydration of the oil and gas.

[0042] In the dehydration process, the present invention utilizes a drive mechanism 34 to drive a scraper mechanism 33 to slide along the surface of a cooling plate 32, thereby scraping off the water condensed on the surface of the cooling plate 32 and impurities mixed in the water and conveying it to a water collection channel 316. Furthermore, when the scraper mechanism 33 slides to the output end of the cooling plate 32, a striking mechanism 36 provided on the cooling plate 32 strikes the scraper 333, causing it to vibrate and shake off any remaining water stains and impurities, ensuring that the scraper 333 remains clean. Subsequently, the scraper mechanism 33 is reset and the scraping operation is repeated until the oil and gas collection is complete. The scraped wastewater is collected through a water collection tank 317 and conveyed to a second filter mechanism 5 for preliminary filtration. The filtered water is then conveyed to a wastewater purification mechanism for purification before being conveyed to a cooling circulation mechanism, thereby making full use of water resources and preventing resource waste. At the same time, the dehydrated oil and gas are passed into a first filter mechanism 4 for filtration, further improving the cleanliness of the oil and gas. Finally, the filtered clean oil and gas is collected.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0045] The examples above are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention fall within the scope of protection of the present invention. Device structures and method steps not described in detail in this invention are prior art and will not be further described in this invention.

Claims

1. A coal and rock gas pressure stabilization and drainage device, characterized in that: It includes a gas transmission pipe (1), a pressure stabilizing tank (2), a gas-liquid separation mechanism (3), a first filter mechanism (4) and a second filter mechanism (5). Multiple branch pipes (11) are connected in parallel on the gas transmission pipe (1), and a pressure stabilizing tank (2) is provided on each branch pipe (11). The output end of the gas transmission pipe (1) and the output ends of the multiple branch pipes (11) are connected to the gas-liquid separation mechanism (3). A first filter mechanism (4) for filtering gas is provided above the gas-liquid separation mechanism (3), and a second filter mechanism (5) for filtering waste liquid is provided below the gas-liquid separation mechanism (3). The gas-liquid separation mechanism (3) includes at least a housing (31) and a cooling plate (32). Multiple cooling plates (32) are arranged in an alternating and inclined manner in the housing (31). Cooling pipes are arranged in the cooling plates (32). The cooling pipes are connected to an external cooling circulation mechanism. A scraper mechanism (33) is also slidably arranged on the housing (31). The scraper mechanism (33) is driven by a drive mechanism (34).

2. The coal and rock gas pressure stabilization and drainage device according to claim 1, characterized in that: The scraper mechanism (33) includes at least a slide block (331), a slider (332) and a scraper (333). The outer shell (31) is provided with multiple sliding grooves (311). The slide block (331) slides along the sliding grooves (311). The upper and lower ends of the slide block (331) are slidably provided with sliders (332). The sliders (332) are fixedly provided on the sliders (332).

3. The coal and rock gas pressure stabilization and drainage device according to claim 2, characterized in that: The slider (332) is fixedly provided with a card plate (334) at one end away from the cooling plate (32). The card plate (334) is slidably provided with support plates (335) at both ends by springs. The outer shell (31) is provided with a slide rail (312). The slide rail (312) is provided with slots (313) at both ends. The two support plates (335) are respectively inserted into the two slots (313). The support plates (335) are inserted into the slide rail (312) and slide along the corresponding slide rail (312).

4. The coal and rock gas pressure stabilization and drainage device according to claim 1, characterized in that: The drive mechanism (34) includes at least a drive seat (341) and guide rods (342). Two guide rods (342) are fixedly installed on the drive seat (341). Multiple slide rails (314) are provided on the outer shell (31). Two straight grooves (336) are provided on the slide seat (331) of the scraper mechanism (33) in the gas-liquid separation mechanism (3). An inclined groove (337) is provided on the slider (332) of the scraper mechanism (33) in the gas-liquid separation mechanism (3). The guide rods (342) are inserted into the slide rails (314) and slide along the slide rails (314). The two guide rods (342) pass through the two straight grooves (336) respectively and are inserted into the inclined grooves (337) on the sliders (332) located at both ends of the slide seat (331).

5. A coal and rock gas pressure stabilization and drainage device according to claim 4, characterized in that: The drive seat (341) is multiple, and the multiple drive seats (341) are fixedly connected by the same drive rod (35); a lead screw (315) is rotatably provided on the outer shell (31), and the drive rod (35) is provided with a thread that cooperates with the lead screw (315).

6. The coal and rock gas pressure stabilization and drainage device according to claim 1, characterized in that: The outer shell (31) is provided with a water collection channel (316), the output end of the cooling plate (32) is located in the water collection channel (316), the output end of the water collection channel (316) is provided with a water collection tank (317), the bottom of the water collection tank (317) is inclined, the water collection tank (317) is connected to the second filter mechanism (5) through a water supply pipe (318), the second filter mechanism (5) is connected to an external wastewater purification mechanism, and the wastewater purification mechanism is connected to the cooling circulation mechanism.

7. The coal and rock gas pressure stabilization and drainage device according to claim 1, characterized in that: The output end of the cooling plate (32) is rotatably provided with multiple striking mechanisms (36); each striking mechanism (36) includes a turntable (361) and a striking block (362). Multiple limiting grooves are opened along the circumference of the turntable (361), and the striking block (362) is rotatably arranged in the limiting groove. A spring (363) is arranged between the striking block (362) and the turntable (361).

8. A coal and rock gas pressure stabilization and drainage device according to claim 7, characterized in that: The output end of the striking block (362) is tilted.

9. A coal and rock gas pressure stabilization and drainage device according to claim 7, characterized in that: A stop bar (321) is fixedly provided at the output end of the cooling plate (32). The stop bar (321) blocks the striking block (362) and drives the striking block (362) to rotate.

10. The drainage method of any one of the coal and rock gas stabilizing drainage devices according to claims 1-9, characterized in that: The specific steps are as follows: The oil and gas are stabilized and discharged through the pressure stabilizing tank (2). The collected oil and gas are then fed into the gas-liquid separation mechanism (3). The water vapor in the oil and gas is removed by the gas-liquid separation mechanism (3). The cooling plate (32) in the gas-liquid separation mechanism (3) is cleaned by the scraper mechanism (33). The dehydrated oil and gas are then fed into the first filtration mechanism (4) for filtration and collection. The wastewater is fed into the second filtration mechanism (5) for preliminary filtration. The filtered wastewater is then purified by the wastewater purification mechanism and fed into the cooling circulation mechanism for reuse.

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