CN220803350U

CN220803350U - Automatic vacuum degassing device

Info

Publication number: CN220803350U
Application number: CN202322628495.XU
Authority: CN
Inventors: 张朝青
Original assignee: Xinjiang Uygur Autonomous Region Mineral Experimental Research Institute
Current assignee: Xinjiang Uygur Autonomous Region Mineral Experimental Research Institute
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-04-19
Anticipated expiration: 2033-09-26

Abstract

The utility model relates to the technical field of vacuum degassing and discloses an automatic vacuum degassing device, which comprises a super thermostat, a mercury U-shaped pipe and a vacuum pump, wherein the super thermostat is internally provided with a sealing tank, the super thermostat is connected with a water collecting bottle through a pipeline, the mercury U-shaped pipe is respectively connected with a cooling pipe, a water suction pipe, a gas suction bottle, a vacuum bottle, a first large amount pipe, a second large amount pipe and a small pipe through the pipeline, the cooling pipe, the water suction pipe, the gas suction bottle, the vacuum bottle, the first large amount pipe, the second large amount pipe and the small pipe are sequentially distributed from the position close to the mercury U-shaped pipe to the position far away from the mercury U-shaped pipe, and the small pipe is connected with a sixth three-way piston through the pipeline.

Description

Automatic vacuum degassing device

Technical Field

The utility model relates to the technical field of vacuum degassing, in particular to an automatic vacuum degassing device.

Background

Due to the restrictions of coal mining methods, processes and equipment, the recovery rate cannot reach 100% during coal mining, a large amount of float coal remains in the goaf, meanwhile, coal pillars with certain thickness are also present at the boundary of the goaf, and methane desorption of the float coal and the coal pillars causes the accumulation of high-concentration coal bed gas in the goaf, if the coal bed gas remains underground, serious resource waste can be caused, production safety of other adjacent underground working surfaces can be threatened, and moreover, the coal bed can escape from the ground surface through mining cracks, so that the earth climate and ecological environment are seriously influenced.

According to the vacuum degassing device disclosed in the Chinese patent No. CN209630683U, the vacuum degassing device comprises a water inlet, a water outlet, a water storage tank, a heater, a water pump, a vacuum pump, a valve, a tee joint, a pipeline and other components, wherein a water inlet door of the vacuum degassing device is connected with a first interface of the tee joint through a pipeline, a second interface of the tee joint is connected with the water inlet at the top of the water storage tank through a pipeline, the water outlet of the water storage tank is connected with the water pump through a pipeline, and the water pump is connected to the water inlet … of the heater through a pipeline.

However, the above-mentioned degassing device is not provided with a valve interval time opening and closing controller on the connecting valve, and needs to be manually closed and opened, and at present, when the degassing treatment is performed on the coalbed methane, the degassing treatment device is generally required to be manually nursed, so that the degassing treatment efficiency is reduced, and the manual operation cost is high.

Disclosure of utility model

The utility model aims to provide an automatic vacuum degassing device which solves the problems in the background technology.

Technical proposal

The utility model provides the following technical scheme: the utility model provides an automatic vacuum degasser, includes super thermostat, mercury U-shaped pipe and vacuum pump, super thermostat's inside contains the seal pot, super thermostat has the water collecting bottle through the pipe connection, mercury U-shaped pipe is connected with the cooling tube respectively through the pipeline, the water suction pipe, the gas cylinder, the vacuum bottle, first large tube, second large tube and little buret, and the cooling tube, the water suction pipe, the gas cylinder, the vacuum bottle, first large tube, second large tube and little buret distribute in proper order from being close to mercury U-shaped pipe to keeping away from mercury U-shaped pipe, there is the sixth tee bend piston through the pipe connection of little buret, the sixth tee bend piston has the third one-way piston through the pipe connection, the water collecting bottle is connected with the other end of cooling tube through the pipe connection, the one end of third water discharging bottle is connected with the water suction pipe through the pipe connection, the other end pipeline of third water discharging bottle is provided with the second one-way piston, be connected through the pipe between gas suction bottle and the vacuum bottle, be provided with the controller on the vacuum pump, the drying pump has the large tube to be connected with the vacuum bottle through the first large tube through the pipe connection between the vacuum bottle and the first large tube and the vacuum bottle.

Preferably, a first one-way piston is arranged on the pipeline between the super thermostat and the water collecting bottle.

Preferably, a first three-way piston is arranged between the gas suction bottle and the mercury U-shaped pipe, a second three-way piston is arranged between the first large-amount pipe and the mercury U-shaped pipe, a fourth three-way piston is arranged between the second large-amount pipe and the mercury U-shaped pipe, and a fifth three-way piston is arranged between the small-amount pipe and the mercury U-shaped pipe.

Preferably, a separation ball is arranged in a pipeline between the vacuum pump and the drying tower.

Preferably, the suction pipe is connected with the suction bottle through a pipeline, and a third three-way piston is arranged on the pipeline.

Preferably, the suction bottle is connected with the vacuum bottle through a pipeline, and a seventh three-way piston is arranged on the pipeline.

Advantageous effects

Compared with the prior art, the utility model provides an automatic vacuum degassing device, which comprises the following components

The beneficial effects are that:

1. According to the automatic vacuum degassing device, the time controller is arranged in front of the vacuum pump, and the controller can control the whole degassing device to periodically perform degassing and ventilation treatment.

2. According to the automatic vacuum degassing device, the time controller is arranged, so that manual operation is reduced, and the working efficiency is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.

FIG. 1 is a working diagram of the overall structure of the present utility model.

In the figure: 1. a super thermostat; 2. a sealed tank; 3. a water collecting bottle; 4. a cooling tube; 5. mercury U-shaped tube; 6. a water suction pipe; 7. an air suction bottle; 8. vacuum bottle; 9. a drying tower; 10. a separation ball; 11. a vacuum pump; 12. a first plurality of tubes; 13. a second plurality of tubes; 14. a small tube; 15. a first water discharge bottle; 16. a second water discharge bottle; 17. a controller; 18. a third row of water bottles; 19. a first one-way piston; 20. a first three-way piston; 21. a second one-way piston; 22. a second three-way piston; 23. a third three-way piston; 24. a fourth three-way piston; 25. a fifth three-way piston; 26. a third one-way piston; 27. a sixth three-way piston; 28. and a seventh three-way piston.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples:

Referring to fig. 1, an automatic vacuum degassing device comprises a super thermostat 1, a mercury U-shaped pipe 5 and a vacuum pump 11, wherein a sealing tank 2 is arranged in the super thermostat 1, the super thermostat 1 is connected with a water collecting bottle 3 through a pipeline, the mercury U-shaped pipe 5 is respectively connected with a cooling pipe 4, a water suction pipe 6, an air suction bottle 7, a vacuum bottle 8, a first large pipe 12, a second large pipe 13 and a small pipe 14 through pipelines, the cooling pipe 4, the water suction pipe 6, the air suction bottle 7, the vacuum bottle 8, the first large pipe 12, the second large pipe 13 and the small pipe 14 are sequentially distributed from being close to the mercury U-shaped pipe 5 to being far away from the mercury U-shaped pipe 5, the small pipe 14 is connected with a sixth three-way piston 27 through a pipeline, the sixth three-way piston 27 is connected with a third one-way piston 26 through a pipeline, the water collecting bottle 3 is connected with the other end of the cooling pipe 4 through a pipeline, the water collecting bottle 3 is connected with a third water discharge bottle 18 through a pipeline, one end of the third water discharge bottle 18 is connected with the water suction bottle 6 through a pipeline, the other end of the third water discharge bottle 18 is provided with a pipeline 21, the other end of the third water discharge bottle 18 is connected with the vacuum bottle 6 through a pipeline, the vacuum bottle 7 is connected with the vacuum bottle 9 through the vacuum bottle 7, the vacuum bottle 9 is connected with the vacuum bottle 13 through the vacuum bottle 9, and the vacuum bottle is connected with the vacuum bottle 13 through the vacuum bottle 9 through the vacuum bottle, and the vacuum bottle 9 is connected with the vacuum bottle 13 through the vacuum bottle, the vacuum bottle 9 through the pipeline, the vacuum bottle is connected with the vacuum bottle 9 through the vacuum bottle 9.

In this embodiment, a first one-way piston 19 is provided on the conduit between the super thermostat 1 and the water collection bottle 3.

In this embodiment, a first three-way piston 20 is disposed between the gas cylinder 7 and the mercury hairpin tube 5, a second three-way piston 22 is disposed between the first large-size tube 12 and the mercury hairpin tube 5, a fourth three-way piston 24 is disposed between the second large-size tube 13 and the mercury hairpin tube 5, and a fifth three-way piston 25 is disposed between the small-size tube 14 and the mercury hairpin tube 5.

In this embodiment, a separation ball 10 is provided in the pipe between the vacuum pump 11 and the drying tower 9.

In this embodiment, the suction pipe 6 and the suction bottle 7 are connected by a pipe, and a third three-way piston 23 is arranged on the pipe.

In this embodiment, the suction bottle 7 and the vacuum bottle 8 are connected by a pipeline, and a seventh three-way piston 28 is arranged on the pipeline.

The electromagnetic valve is arranged in the vacuum pump 11, and the controller 17 can control the opening time of the electromagnetic valve in the vacuum pump 11, so as to control the opening time of the vacuum pump 11 and achieve the effect of automatic air extraction.

The controller 17 may control the opening of the solenoid valve at time intervals, for example, every five minutes, ten minutes, half an hour, etc., to perform the degassing ventilation treatment on the entire degassing apparatus.

The working principle of the embodiment is as follows: after the vacuum degassing device is assembled, a proper amount of saturated saline is filled into the air suction bottle 7, the vacuum bottle 8, the first large measuring tube 12, the first large measuring tube 13 and the small measuring tube 14 to be used as limiting liquid, a few drops of methyl orange are added into the saturated saline, each connecting point of the vacuum system is sealed by acid sealant after dilute sulfuric acid is added to turn the methyl orange into red, the piston is coated with vacuum grease after being cleaned, air leakage is prevented, and pollution of an organic solvent is prevented when the piston is cleaned.

The first three-way piston 20 is rotated by 90 degrees to enable the third three-way piston to be not communicated (even if the suction bottle 7 of the right system of the piston A is isolated from the left system), the second three-way piston 22 is twisted to enable the left system to be communicated with a vacuum pump, the vacuum pump 11 is started until the mercury liquid level in the mercury U-shaped pipe 5 is not moved, the air extraction is continued for 3min, the second three-way piston 22 is closed (the third three-way piston is not communicated), the mercury liquid level of the mercury U-shaped pipe 5 cannot move by more than 5mm after the second three-way piston is placed for 2h, otherwise, the device leaks air and performs sealing treatment.

1) Preparation of coal sample before degassing: firstly, checking the air tightness of the device, closing the second three-way piston 22 after vacuumizing the vacuum system, and then observing the mercury liquid level of the mercury U-shaped pipe 5, wherein the liquid level is kept unchanged within 10 minutes.

2) Degassing the coal sample at normal temperature: first, the vacuum degassing apparatus is evacuated to a vacuum state. Loosening the compression screw, inserting the degassing needle head into the degassing hole of the sealing tank 2, and screwing the compression screw to prevent air leakage. The spring clamp is then opened slowly to allow the gas in the sealed tank to enter the vacuum degasser until the mercury level of the mercury U-shaped tube 5 is stationary. Holding the first and second water discharge bottles 15, 16, rotating the second, fourth, fifth and sixth three-way pistons 22, 24, 25 and 27 to open the first, second and third large, 13, 14 to atmosphere, moving the first and second water discharge bottles 15, 16 up to completely fill the first, second and third large, 14 with confining liquid, and closing the second, fourth, and fifth three-way pistons 22, 24, 25 to make them three-way. The first and second water discharge bottles 15, 16 are put down, and the first check piston 19 is rotated to communicate the first plurality of tubes 12, 13 with the left system.

The vacuum pump 11 is started, the seventh three-way piston 28 is rotated, the vacuum bottle 8 is communicated with the vacuum pump 11, the vacuum bottle 8 is vacuumized, when the limited liquid level in the air suction bottle 7 is obviously lowered, the seventh three-way piston 28 is rotated, the air suction bottle 7 is communicated with the left system, and at the moment, a part of gas separated from the left system enters the air suction bottle 7. After the vacuum bottle 8 is filled with water, the seventh three-way piston 28 is closed to be three-way. Simultaneously, the first one-way piston 19 and the seventh three-way piston 28 are rotated to enable the suction bottle 7 to be communicated with the first large-amount pipe 12 and the first large-amount pipe 13 and enable the vacuum bottle 8 to be communicated with the atmosphere. At this time, the gas in the gas cylinder 7 enters the first large-volume pipe 12 and the first large-volume pipe 13. When the liquid level just reaches the upper bottle mouth of the gas suction bottle 7, the first one-way piston 19 is quickly closed, so that the first one-way piston 19 is not communicated.

Repeating the above operation steps until the liquid level of the mercury in the U-shaped tube is not moved, standing for 20min, and exhausting once every 20min until the amount of the gas extracted every 20min is less than 10 mL.

3) Heating and degassing a coal sample: after the normal temperature degassing of the coal sample is finished (the gas amount removed in 20min is less than 10 mL), the coal sample is placed in a water bath kettle and heated to 95-100 ℃ and kept at a constant temperature.

4) When excessive water is accumulated in the water collecting bottle 3 in the degassing process, the accumulated water in the water collecting bottle 3 should be discharged in time. When draining, the gas in the vacuum system is prevented from being pumped out.

5) Measuring the volume of the degassing gas: the liquid level of the second water discharge bottle 16 is lifted to be level with the liquid level in the burette, and the volume of the burette is read. At the same time, room temperature, barometer temperature and barometric pressure are required to be recorded.

If the two large-scale pipes cannot collect all the expelled gas, the gas can be fully and uniformly mixed, the gas of the first large-scale pipe 12 and the first large-scale pipe 13 is discharged, the gas in the small-scale pipe 14 is reserved, and the volume of the gas discharged by the first large-scale pipe 12 and the first large-scale pipe 13 is recorded. And after the degassing is finished, mixing the gas samples according to the front-back volume ratio, and then collecting the mixed gas sample for component measurement. The retention time of the coalbed methane sample in the burette should not exceed 2 hours at maximum.

6) Sampling coal bed gas: before taking the gas sample, the second three-way piston 22, the fourth three-way piston 24 and the fifth three-way piston 25 are closed, then the gas collection bag is installed on the pipeline in a sealing mode, and the level bottle is placed at a position higher than the first large-amount pipe 12, the first large-amount pipe 13 and the small-amount pipe 14. The seventh three-way piston 27 and the third one-way piston 26 are opened to discharge the air in the air collection bag and the residual saturated saline solution in the burette. The seventh three-way piston 27 is closed, and then the second three-way piston 22, the fourth three-way piston 24 and the fifth three-way piston 25 are opened, so that the first large number of pipes 12, the first large number of pipes 13, the small number of pipes 14 are connected with the gas collection bag, and the gas in the first large number of pipes 12, the first large number of pipes 13 and the small number of pipes 14 is pressed into the gas collection bag due to the water pressure of the level bottle. According to this method, the air collection bag is cleaned 3 times. After the gas production is completed, the gas production valve on the gas production bag is closed, and the third one-way piston 26 is closed.

Claims

1. An automatic vacuum degassing device comprises a super thermostat (1), a mercury U-shaped pipe (5) and a vacuum pump (11), and is characterized in that: the super thermostat (1) internally comprises a sealing tank (2), the super thermostat (1) is connected with a water collecting bottle (3) through a pipeline, a mercury U-shaped pipe (5) is respectively connected with a cooling pipe (4), a water suction pipe (6), a suction bottle (7), a vacuum bottle (8), a first large amount of pipes (12), a second large amount of pipes (13) and a small pipe (14) through pipelines, the cooling pipe (4), the water suction pipe (6), the suction bottle (7), the vacuum bottle (8), the first large amount of pipes (12), the second large amount of pipes (13) and the small pipe (14) are sequentially distributed from being close to the mercury U-shaped pipe (5) to being far away from the mercury U-shaped pipe (5), a sixth three-way piston (27) is connected with the small tube (14) through a pipeline, a third one-way piston (26) is connected with the sixth three-way piston (27) through a pipeline, the water collecting bottle (3) is connected with the other end of the cooling tube (4) through a pipeline, the water collecting bottle (3) is connected with a third water draining bottle (18) through a pipeline, one end of the third water draining bottle (18) is connected with the water sucking tube (6) through a pipeline, a second one-way piston (21) is arranged at the other end of the third water draining bottle (18) through a pipeline, the air sucking bottle (7) is connected with the vacuum bottle (8) through a pipeline, the vacuum pump (11) is provided with a controller (17), the vacuum pump (11) is connected with a drying tower (9) through a pipeline, the drying tower (9) is communicated with a pipeline between an air suction bottle (7) and a vacuum bottle (8) through a pipeline, a first large amount of pipes (12) are communicated with the bottom ends of a second large amount of pipes (13) through the pipeline, a second water draining bottle (16) is connected with the bottom ends of small amount of pipes (14) through the pipeline, and a first water draining bottle (15) is connected with the bottom ends of the small amount of pipes through the pipeline.

2. An automatic vacuum degassing apparatus according to claim 1, wherein: a first one-way piston (19) is arranged on a pipeline between the super thermostat (1) and the water collecting bottle (3).

3. An automatic vacuum degassing apparatus according to claim 1, wherein: a first three-way piston (20) is arranged between the air suction bottle (7) and the mercury U-shaped pipe (5), a second three-way piston (22) is arranged between the first large-size pipe (12) and the mercury U-shaped pipe (5), a fourth three-way piston (24) is arranged between the second large-size pipe (13) and the mercury U-shaped pipe (5), and a fifth three-way piston (25) is arranged between the small-size pipe (14) and the mercury U-shaped pipe (5).

4. An automatic vacuum degassing apparatus according to claim 1, wherein: a separation ball (10) is arranged in a pipeline between the vacuum pump (11) and the drying tower (9).

5. An automatic vacuum degassing apparatus according to claim 1, wherein: the suction pipe (6) is connected with the suction bottle (7) through a pipeline, and a third three-way piston (23) is arranged on the pipeline.

6. An automatic vacuum degassing apparatus according to claim 1, wherein: the suction bottle (7) is connected with the vacuum bottle (8) through a pipeline, and a seventh three-way piston (28) is arranged on the pipeline.