CN219573214U

CN219573214U - Automatic liquid level measuring device for reverse drainage tank of coal seam drainage well

Info

Publication number: CN219573214U
Application number: CN202321281380.1U
Authority: CN
Inventors: 唐勇敢; 荚胜丰; 陈本良
Original assignee: Huainan Mining Group Co Ltd; Ping An Coal Mine Gas Control National Engineering Research Center Co Ltd
Current assignee: Huainan Mining Group Co Ltd; Ping An Coal Mine Gas Control National Engineering Research Center Co Ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-08-22
Anticipated expiration: 2033-05-22

Abstract

The utility model provides an automatic measuring device for the liquid level of a reverse drainage tank of a coal seam drainage well, which comprises a floating ball, a fixed pulley block, a line drop and a liquid level scale; the floating ball passes through the fixed pulley block through a connecting rope to be connected with a line drop; and reading the liquid level height in the reverse tank from a liquid level scale corresponding to the line drop. The pulley type automatic liquid level measuring device is developed, the potential safety hazard existing in the traditional tank-up liquid level measuring process is solved, the labor intensity of drainage and mining personnel is reduced, the measuring error is reduced, and the automatic tank level measuring is realized. Meanwhile, the remote observation can be realized by matching with the monitor of the vision screen, and finally the intelligent drainage and mining can be realized.

Description

Automatic liquid level measuring device for reverse drainage tank of coal seam drainage well

Technical Field

The utility model relates to the technical field of coalbed methane exploitation, in particular to an automatic measuring device for the liquid level of a reverse drainage tank of a coalbed drainage well.

Background

The coal-bed gas well enters a drainage stage, and the wellhead flowback fluid flows into a ground flowback tank through a ground flow manifold. The liquid yield is an important parameter for data recording on a drainage and production site, and can be used for analyzing the working condition of a drainage and production pump, judging the stratum seepage capability and serving as an important reference basis for drainage and production degree adjustment, so that the liquid yield has to be accurately measured. The on-site drainage technicians need to measure the liquid production amount at regular time every day, and encryption measurement is more needed when abnormal conditions are met. The current methods for measuring liquid production amount on the drainage and mining site mainly comprise two methods: the liquid yield is obtained by measuring the change of the liquid level height of the ground flowback tank and calculating by using a volume formula. The other is an automatic water meter, the method has the advantages of automatically measuring the water yield, and the defect that the flowback liquid pulverized coal can be precipitated in the water meter, so that the error of the water meter is larger. The method therefore still requires the technician to verify the flow meter by periodically measuring the tank level to verify the amount of liquid. Both methods require the drainage personnel to calculate the water production by manually measuring the tank level.

In summary, in the automatic metering water meter installation and water pipeline, the water yield can be automatically metered, but the following disadvantages still exist: (1) Impurities such as coal dust and the like in the reverse drainage liquid are precipitated in the water meter, so that the error is larger; (2) The accuracy of the water meter is affected by the manufacturing process, air temperature and the like, and errors exist.

Manual metering is typically calculated by measuring the change in level height using a steel ruler. Disadvantages include: (1) The drainage and mining personnel are required to climb to the upper part of the flowback tank, and potential safety hazards of falling exist; (2) The measurement error is larger due to different observation methods and different measurement positions.

Disclosure of Invention

The utility model aims to solve the technical problems that errors exist in manual measurement and automatic flowmeter measurement in the prior art, and the personnel cost is high.

The utility model solves the technical problems by the following technical means:

an automatic measuring device for the liquid level of a reverse drainage tank of a coal seam drainage well comprises a floating ball, a fixed pulley block, a line drop and a liquid level scale; the floating ball passes through the fixed pulley block through a connecting rope to be connected with a line drop; and reading the liquid level height in the reverse tank from a liquid level scale corresponding to the line drop.

The pulley type automatic liquid level measuring device is developed, the potential safety hazard existing in the traditional tank-up liquid level measuring process is solved, the labor intensity of drainage and mining personnel is reduced, the measuring error is reduced, and the automatic tank level measuring is realized. Meanwhile, the remote observation can be realized by matching with the monitor of the vision screen, and finally the intelligent drainage and mining can be realized.

Further, the device also comprises a fixing sleeve; the fixed sleeve is fixed in the anti-jar that arranges, the floater is located fixed sleeve, the floater can follow the liquid level and float from top to bottom at the sleeve, the liquid level is unanimous in anti-jar that arranges and the fixed sleeve.

Further, the sleeve wall is provided with a liquid inlet.

Further, the fixed pulley block comprises two fixed pulleys, wherein one fixed pulley is positioned right above the floating ball, and the other fixed pulley is positioned above the line drop.

Further, the liquid level scale is gradually increased from top to bottom; when the floating ball is positioned at the bottom of the reverse discharge tank, the line drop is positioned at the highest position of the liquid level scale, and the reading is 0.

Further, the sleeve is a transparent cylinder.

Further, the diameter of the floating ball is smaller than that of the sleeve, and the floating ball can vertically move up and down in the sleeve.

The utility model has the advantages that:

the pulley type automatic liquid level measuring device is developed, the potential safety hazard existing in the traditional method of measuring the liquid level by the upper tank is solved by utilizing the motion of the floating ball and the line drop, the labor intensity of drainage and mining personnel is reduced, the measuring error is reduced, and the automatic measurement of the tank level is realized. Meanwhile, the remote observation can be realized by matching with the monitor of the vision screen, and finally the intelligent drainage and mining can be realized.

Drawings

Fig. 1 is a schematic structural diagram of an automatic measurement device according to an embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are 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.

As shown in fig. 1, the embodiment describes an automatic measuring device for the liquid level of a reverse drainage tank of a coal seam drainage well, which comprises a floating ball 2, a fixed pulley block 4, a line drop 6 and a liquid level scale 5; the floating ball 2 passes through the fixed pulley block 4 through the connecting rope 1 and is connected with the wire pendant 6; and reading the liquid level in the reverse discharge tank 7 from the liquid level scale 5 corresponding to the line drop 6.

In order to further limit the movement path of the floating ball 2 and ensure the vertical movement of the floating ball, a sleeve is fixed in the reverse-discharging tank 7 in the embodiment; the floating ball 2 is positioned in the fixed sleeve, and the diameter of the floating ball 2 is smaller than that of the sleeve, so that the floating ball 2 can vertically move up and down in the sleeve. In this embodiment, the sleeve is a cylinder made of PVC, and the transparent material can facilitate observation of the motion condition of the floating ball 2, and is fixed to the bottom wall of the reverse discharge tank 7 at the bottom of the sleeve, and can be glued or welded, and the side wall of the sleeve is provided with a liquid inlet hole, so that the liquid level in the sleeve is consistent with the liquid level in the reverse discharge tank 7.

In the embodiment, the liquid level scale 5 gradually increases from top to bottom; when the floating ball 2 is positioned at the bottom of the reverse discharge tank 7, the line drop 6 is positioned at the highest position of the liquid level scale 5, and the reading is 0. The fixed pulley block 4 comprises two fixed pulleys, one is positioned right above the floating ball 2, and the other is positioned above the wire pendant 6. The length of the connecting rope 1 is determined according to the positions of the line drop 6 and the floating ball 2, so that when the floating ball 2 is positioned at the bottom of the reverse discharge tank 7, the line drop 6 is positioned at the 0 scale position of the liquid level scale 5.

In this embodiment, the liquid level scale 5 may be provided with a vertical clamping groove, so that the wire plummet 6 moves up and down in the clamping groove, and the wire plummet 6 is prevented from swinging under the action of wind force or other external forces.

In this embodiment, the wire weight 6 is a lead weight, which is corrosion-resistant and has a high density.

The method for installing and using the automatic measuring device in the embodiment comprises the following steps:

(1) Determining the mass of the lead plate drop and the floating ball: the floating ball should float 1/2 out of the water, so the G floating ball-G lead plate drop = 1/2V floating ball ρ water.

(2) And determining the length of the connecting line, and enabling the lead plate pendant to be positioned at the scale mark 0 when the floating ball is positioned at the bottom of the reverse liquid discharge.

(3) The fixing sleeve is made of PVC material and is fixed in the flowback tank; the connecting wire made of PE is tied on the floating ball, the floating ball is placed in the sleeve, two fixed pulleys are fixed through the distance between the floating ball and the scale outside the tank, and the other end of the PE wire is connected to the lead plate pendant through the fixed pulley block. The lead block freely falls in the clamping groove of the external liquid level scale.

(4) When the liquid level in the flowback tank rises or falls, the floating ball moves up and down along with the buoyancy effect, and the pulley drives the lead block in the clamping groove of the external liquid level scale to move up and down. By correctly reading the scale of the scale on which the lead is located, the liquid production can be rapidly calculated using the volumetric formula (volume = bottom area x high).

The pulley type automatic liquid level measuring device is developed, the potential safety hazard existing in the traditional tank-up measuring of the liquid level is solved, the labor intensity of drainage and mining personnel is reduced, the measuring error is reduced, and the automatic tank level measurement is realized. Meanwhile, the remote observation can be realized by matching with the monitor of the vision screen, and finally the intelligent drainage and mining can be realized.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The automatic measuring device for the liquid level of the reverse drainage tank of the coal seam drainage well is characterized by comprising a floating ball (2), a fixed pulley block (4), a line drop (6) and a liquid level scale (5); the floating ball (2) passes through the fixed pulley block (4) through the connecting rope (1) to be connected with the wire pendant (6); and reading the liquid level height in the reverse drainage tank (7) from a liquid level scale (5) corresponding to the line drop (6).

2. The automatic measuring device for the liquid level of the reverse drainage tank of the coal seam drainage well of claim 1, further comprising a fixed sleeve; the fixed sleeve is fixed in the reverse drainage tank (7), the floating ball (2) is positioned in the fixed sleeve, the floating ball (2) can float up and down along with the liquid level in the sleeve, and the liquid level in the reverse drainage tank (7) is consistent with the liquid level in the fixed sleeve.

3. The automatic measuring device for the liquid level of the reverse drainage tank of the coal seam drainage well of claim 2, wherein the sleeve wall is provided with a liquid inlet.

4. A device for automatically measuring the liquid level of a reverse drainage tank of a coal seam drainage well according to any one of claims 1 to 3, wherein the fixed pulley block (4) comprises two fixed pulleys, one is positioned right above the floating ball (2) and the other is positioned above the line drop (6).

5. A device for automatically measuring the liquid level of a reverse drainage tank of a coal seam drainage well according to any one of claims 1 to 3, wherein the liquid level scale (5) gradually increases from top to bottom; when the floating ball (2) is positioned at the bottom of the reverse discharge tank (7) (7), the line drop (6) is positioned at the highest position of the liquid level scale (5), and the reading is 0.

6. A coal seam drainage well reverse drainage tank liquid level automatic measuring device according to claim 2 or 3, wherein the sleeve is a transparent cylinder.

7. The automatic measuring device for the liquid level of the reverse drainage tank of the coal seam drainage well, according to claim 6, wherein the diameter of the floating ball (2) is smaller than that of the sleeve, and the floating ball (2) can vertically move up and down in the sleeve.