Leakage-proof device for gas extraction

Abstract

The utility model provides an anti-leakage device for gas extraction. The anti-leakage device for gas extraction comprises a sampling tank and an anti-leakage mechanism, the sampling tank is connected with an air inlet pipe; the anti-leakage mechanism is connected with an air inlet pipe flange, the anti-leakage mechanism comprises a connecting pipe, a partition plate is fixedly connected into the connecting pipe, a plurality of through holes are formed in the partition plate in a penetrating mode, a pulling and releasing mechanism is slidably connected to the partition plate, the pulling and releasing mechanism corresponds to the through holes, and optionally, the pulling and releasing mechanism comprises a sliding rod used for connecting a plugging plate and a limiting plate; according to the anti-leakage device for gas extraction, through arrangement of corresponding mechanisms, sealed sampling of gas can be achieved, leakage of the gas in the sampling process can be reduced, the sampling effect of the gas can be improved, the sampling efficiency of the gas can be improved, and the leakage of the gas in the sampling process can be reduced. And meanwhile, no harm is caused to the bodies of nearby workers.

Description

TECHNICAL FIELD

[0001] The utility model relates to a prevent leaking device technical field, especially a kind of prevent leaking device for gas extraction. BACKGROUND

[0002] Gas extraction refers to the technical measures that drilling is carried out to coal seam and gas gathering area, drill hole is connected to special pipeline, and gas in coal seam and goaf is extracted to ground or discharged into total return air flow using extraction equipment. Through gas extraction, not only gas emission during mining process can be reduced, gas overrun and accumulation can be prevented, gas explosion and coal and gas outburst accident can be prevented, but also gas can be changed from harm to benefit, and exploited and utilized as resource associated with coal.

[0003] Gas concentration monitoring during gas extraction is generally completed by sensor, and some high-precision gas concentration inspection needs to use sampling device, and gas sample is sent to laboratory for detection. However, since sampling device lacks anti-leakage mechanism, gas is prone to leakage during sampling, which not only reduces the sampling effect of gas, but also harms the health of nearby workers.

[0004] Therefore, it is urgent to redesign a new kind of prevent leaking device for gas extraction to solve the above problems. INVENTION CONTENTS

[0005] The utility model provides a kind of prevent leaking device for gas extraction to solve the technical problems raised in the above background.

[0006] The utility model provides a kind of prevent leaking device for gas extraction, and the prevent leaking device for gas extraction includes sampling tank and anti-leakage mechanism;

[0007] Sampling tank is connected with inlet pipe;

[0008] Anti-leakage mechanism is flanged with inlet pipe, and anti-leakage mechanism includes connecting pipe, connecting pipe is fixedly connected with baffle, a plurality of through holes are arranged on baffle, and baffle is slidably connected with pulling release mechanism, and pulling release mechanism corresponds with through hole.

[0009] Optionally, pulling release mechanism includes slide rod, and slide rod is used to connect plugging plate and limiting plate;

[0010] The end of slide rod away from inlet pipe is connected with plugging plate, and plugging plate covers through hole, when plugging plate covers through hole, the plugging of connecting pipe can be realized, that is, gas cannot flow through connecting pipe.

[0011] Optionally, the diameter of the blocking plate is smaller than the diameter of the partition plate, and a plurality of plugs are connected to the blocking plate and engaged in the through hole, so that the blocking effect of the blocking plate on the through hole is improved and the problem of leakage is avoided.

[0012] Optionally, the end of the sliding rod away from the blocking plate is connected to a limiting plate, a spring is arranged between the limiting plate and the partition plate, the spring is arranged outside the sliding rod, and the blocking plate covers the through hole under the cooperation of the limiting plate and the spring, so that the blocking of the connecting pipe is realized.

[0013] Optionally, a protective sleeve is arranged outside the spring, and the protective sleeve is arranged between the limiting plate and the partition plate and used for protecting the spring.

[0014] Optionally, a pull rope is connected to the blocking plate, one end of the pull rope is connected to a screw rod, and the end of the screw rod away from the connecting pipe is connected to a nut.

[0015] The end of the screw rod away from the connecting pipe is threadedly connected to the nut, the nut is used for locking and fixing the pulling position of the screw rod, and the screw rod does not need to be pulled by the worker all the time.

[0016] Optionally, a sealing element is arranged on the connecting pipe, and the screw rod passes through the sealing element, so that the sealing effect is improved and the gas is not easy to leak from the gap between the screw rod and the connecting pipe.

[0017] Optionally, a fixed pulley is rotatably connected in the connecting pipe, and the pull rope passes through the fixed pulley, so that the pull rope is reversed to move the blocking plate in the connecting pipe.

[0018] Optionally, a filter screen is arranged in the connecting pipe, and the filter screen is arranged on the side of the partition plate close to the sampling tank, so that the gas entering the sampling tank is filtered and impurities in the gas are removed.

[0019] A rotating shaft is rotatably connected to the filter screen, and a blade is connected to one end of the rotating shaft, so that the blade is driven to rotate when the gas flows in the connecting pipe.

[0020] Optionally, the other end of the rotating shaft is connected to a mounting plate, and a brush is arranged on the mounting plate, so that the mounting plate is synchronously rotated when the rotating shaft rotates, and the brush on the mounting plate cleans the filter screen, so that the filter screen is not easy to be blocked by impurities.

[0021] The beneficial effects of the utility model are as follows:

[0022] The anti-leakage device for gas extraction can realize sealed sampling of gas, so as to reduce leakage of gas in the sampling process, improve the sampling effect of gas, and does not cause harm to the bodies of workers working nearby. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Figure 1 is a sectional view of the anti-leakage device for gas extraction provided by the present application;

[0025] Figure 2 is Figure 1 is a local enlarged view of the A area in the figure;

[0026] Figure 3 is Figure 1 is a local enlarged view of the B area in the figure;

[0027] Figure 4 is a side view of the anti-leakage device for gas extraction provided by the present application;

[0028] Figure 5 is an installation effect view of the anti-leakage device for gas extraction provided by the present application;

[0029] Figure 6 is Figure 5 is a local enlarged view of the C area in the figure.

[0030] 1, sampling tank; 101, air inlet pipe; 2, anti-leakage mechanism; 201, connecting pipe; 202, partition plate; 203, through hole; 204, sliding rod; 205, plugging plate; 206, plugging block; 207, limiting plate; 208, spring; 209, protective sleeve; 210, pull rope; 211, screw rod; 212, nut; 213, sealing element; 214, fixed pulley; 3, filter screen; 301, rotating shaft; 302, blade; 303, mounting plate; 304, brush. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate description, only part of the structure related to the present application is shown in the drawings. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0032] Reference herein to“an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, nor is it necessarily referring to a particular alternative embodiment. It will be explicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] Please refer to Figures 1 to 6 The anti-leakage device for gas extraction comprises a sampling tank 1 and an anti-leakage mechanism 2.

[0034] Preferably, the sampling tank 1 is a negative pressure tank, that is, a worker pre-uses a vacuum pump or other air extraction equipment to extract the sampling tank 1 into a vacuum state, so that when the sampling tank 1 is connected to a gas extraction pipeline, gas can enter the sampling tank 1 for sampling.

[0035] The sampling tank 1 is connected with an air inlet pipe 101, and the gas enters the sampling tank 1 for storage through the air inlet pipe 101, so that the worker can send the sampled gas in the sampling tank 1 to a laboratory for detection.

[0036] In addition, the air inlet pipe 101 is provided with a control valve for controlling the on-off of the air inlet pipe 101, so that the sampling tank 1 can be in a negative pressure state when the anti-leakage mechanism 2 is not connected to the air inlet pipe 101.

[0037] Of course, the gas extraction pipeline is also provided with a control valve for controlling the on-off of the gas extraction pipeline.

[0038] Please refer to Figures 1 to 6 The anti-leakage mechanism 2 is flange-connected with the air inlet pipe 101, and the anti-leakage mechanism 2 is connected between the gas extraction pipeline and the sampling tank 1 through the flange, so that the gas is not easy to leak during sampling, which not only can improve the sampling effect of the gas, but also will not cause harm to the nearby workers.

[0039] The anti-leakage mechanism 2 comprises a connecting pipe 201, and a partition plate 202 is fixedly connected in the connecting pipe 201 and used for partitioning the connecting pipe 201. A plurality of through holes 203 are formed through the partition plate 202, and the gas in the connecting pipe 201 can flow through the through holes 203.

[0040] In addition, the partition plate 202 is slidably connected with a pulling release mechanism, the pulling release mechanism corresponds to the through holes 203, when the pulling release mechanism covers the through holes 203, the gas cannot flow in the connecting pipe 201, and when the pulling release mechanism does not cover the through holes 203, the gas can flow in the connecting pipe 201.

[0041] Please refer to Figures 1 to 6 The pulling release mechanism comprises a sliding rod 204, the sliding rod 204 is used for connecting a blocking plate 205 and a limiting plate 207. One end of the sliding rod 204, which is away from the air inlet pipe 101, is connected with the blocking plate 205, and the blocking plate 205 covers the through holes 203. When the blocking plate 205 covers the through holes 203, the connecting pipe 201 can be blocked, that is, the gas cannot flow through the connecting pipe 201.

[0042] Preferably, the diameter of the blocking plate 205 is smaller than the diameter of the partition plate 202.

[0043] The blocking plate 205 is connected with a plurality of plugs 206, the plugs 206 are clamped in the through holes 203, and the blocking effect of the blocking plate 205 on the through holes 203 can be improved, and the leakage problem is not prone to occur.

[0044] In addition, the other end of the sliding rod 204, which is away from the blocking plate 205, is connected with the limiting plate 207, a spring 208 is arranged between the partition plate 202 and the limiting plate 207, and the spring 208 is arranged outside the sliding rod 204. The blocking plate 205 covers the through holes 203 under the cooperation of the limiting plate 207 and the spring 208, and then the connecting pipe 201 can be blocked, so that the gas is not prone to flow in the connecting pipe 201.

[0045] Specifically, a protective sleeve 209 is arranged outside the spring 208, the protective sleeve 209 is arranged between the partition plate 202 and the limiting plate 207, and the protective sleeve 209 is used for protecting the spring 208.

[0046] Please refer to Figures 1 to 6 The blocking plate 205 is connected with a pulling rope 210, one end of the pulling rope 210 is connected with a screw rod 211, and one end of the screw rod 211 penetrates through the connecting pipe 201. The screw rod 211 can pull the blocking plate 205 through the pulling rope 210, and then the blocking plate 205 can be separated from covering the through holes 203, so that the gas can flow in the connecting pipe 201.

[0047] The screw rod 211 is threadedly connected with a nut 212 at one end outside the connecting pipe 201, and the nut 212 is used for locking and fixing the pulling position of the screw rod 211, without the need of staff to pull the screw rod 211 all the time.

[0048] In addition, the connecting pipe 201 is provided with a sealing element 213, and the screw rod 211 passes through the sealing element 213, so that the sealing effect is improved, and the gas is not easy to leak from the gap between the screw rod 211 and the connecting pipe 201.

[0049] Specifically, the connecting pipe 201 is rotatably connected with a fixed pulley 214, and the pull rope 210 passes through the fixed pulley 214, which is used for reversing the pull rope 210, so as to pull the blocking plate 205 to move in the connecting pipe 201.

[0050] Please refer to Figures 1 to 6 The connecting pipe 201 is provided with a filter screen 3, which is arranged on the side of the partition plate 202 close to the sampling tank 1, and is used for filtering the gas entering the sampling tank 1, so as to remove the impurities in the gas.

[0051] The filter screen 3 is rotatably connected with a rotating shaft 301, and the rotating shaft 301 is connected with a blade 302 at one end. When the gas flows in the connecting pipe 201, the gas will generate a force on the blade 302, so that the blade 302 drives the rotating shaft 301 to rotate.

[0052] In addition, the other end of the rotating shaft 301 is connected with a mounting plate 303, and the mounting plate 303 is provided with brush hairs 304. When the rotating shaft 301 rotates, the mounting plate 303 can rotate synchronously, so that the brush hairs 304 on the mounting plate 303 clean the filter screen 3, so that the filter screen 3 is not easy to be blocked by impurities.

[0053] Specifically, when the gas needs to be sampled, the connecting pipe 201 is connected to the gas extraction pipeline and the gas inlet pipe 101 through the flange connection.

[0054] The control valves on the gas inlet pipe 101 and the gas extraction pipeline are opened, and the screw rod 211 is pulled, and the pulling position of the screw rod 211 is fixed by the nut 212. The screw rod 211 pulls the blocking plate 205 under the action of the fixed pulley 214 and the pull rope 210, so that the blocking plate 205 moves away from the partition plate 202, and at this time, the blocking plate 205 and the blocking block 206 are separated from the clamping of the through hole 203. Since the sampling tank 1 is in a negative pressure state, the gas will enter the sampling tank 1 through the gas extraction pipeline and the connecting pipe 201.

[0055] When the gas flows in the connecting pipe 201, the gas will be filtered by the filter screen 3 to remove impurities in the gas. At the same time, the gas will generate a force on the blade 302, so that the blade 302 drives the rotating shaft 301 to rotate. The mounting plate 303 can synchronously rotate with the rotating shaft 301, so that the bristles 304 on the mounting plate 303 clean the filter screen 3, so that the filter screen 3 is not easily blocked by impurities.

[0056] When the gas sampling is completed, the control valve on the gas extraction pipeline is closed first, the nut 212 is loosened, the pulling force of the pull rope 210 on the blocking plate 205 is reduced, and the blocking plate 205 and the blocking block 206 are re-sealed to the through hole 203 under the action of the limiting plate 207 and the spring 208. Then the control valve on the air inlet pipe 101 is closed, the sampling tank 1 is taken off from the connecting pipe 201, and the sampled gas in the sampling tank 1 is sent to the laboratory for detection.

[0057] The application can realize sealed sampling of the gas, so as to reduce leakage of the gas in the sampling process, not only can improve the sampling effect of the gas, but also will not cause harm to the nearby workers.

[0058] The above is only the embodiment of the application, and does not limit the patent range of the application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is included in the patent protection range of the application, is included in the patent protection range of the application.

Claims

1. A leakage prevention device for gas extraction, characterized in that: include A sampling tank, wherein the sampling tank is connected to an air inlet pipe; The anti-leakage mechanism is connected to the intake pipe flange, and the anti-leakage mechanism includes a connecting pipe, a partition is fixedly connected to the connecting pipe, a plurality of through holes are passed through the partition, and a pulling and releasing mechanism is slidably connected to the partition, and the pulling and releasing mechanism corresponds to the through holes.

2. The anti-leakage device for gas extraction according to claim 1, characterized in that: The pull-release mechanism includes a sliding rod, and one end of the sliding rod away from the air inlet pipe is connected to a blocking plate, and the blocking plate covers the through hole.

3. The anti-leakage device for gas extraction according to claim 2, characterized in that: The diameter of the blocking plate is smaller than the diameter of the partition plate. A plurality of blocking blocks are connected to the blocking plate, and the blocking blocks are engaged in the through holes.

4. The anti-leakage device for gas extraction according to claim 3, characterized in that: One end of the slide bar away from the blocking plate is connected to the limit plate, a spring is provided between the partition plate and the limit plate, and the spring is provided on the outside of the slide bar.

5. The anti-leakage device for gas extraction according to claim 4, characterized in that: A protective sleeve is provided on the outside of the spring, and the protective sleeve is arranged between the partition plate and the limiting plate.

6. The anti-leakage device for gas extraction according to claim 5, characterized in that: A pull rope is connected to the blocking plate, one end of the pull rope is connected to a screw rod, one end of the screw rod passes through the connecting pipe, and one end of the screw rod located outside the connecting pipe is threadedly connected to a nut.

7. The anti-leakage device for gas extraction according to claim 6, characterized in that: A sealing member is installed on the connecting pipe, and the screw rod passes through the sealing member.

8. The anti-leakage device for gas extraction according to claim 7, characterized in that: A fixed pulley is rotatably connected in the connecting tube, and the pull rope passes around the fixed pulley.

9. The anti-leakage device for gas extraction according to claim 1, characterized in that: A filter is installed in the connecting pipe, and the filter is arranged on a side of the partition close to the sampling tank. A rotating shaft is rotatably connected to the filter, and one end of the rotating shaft is connected to a blade.

10. The anti-leakage device for gas extraction according to claim 9, characterized in that: The other end of the rotating shaft is connected to a mounting plate, on which bristles are mounted, and the bristles correspond to the filter screen.

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