CN103867182A - Water flow metering device applied to coalbed methane drainage - Google Patents
Water flow metering device applied to coalbed methane drainage Download PDFInfo
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- CN103867182A CN103867182A CN201210533683.8A CN201210533683A CN103867182A CN 103867182 A CN103867182 A CN 103867182A CN 201210533683 A CN201210533683 A CN 201210533683A CN 103867182 A CN103867182 A CN 103867182A
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- water
- flowmeter
- drainage
- water level
- outfall
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Abstract
The invention discloses a water flow metering device applied to coalbed methane drainage. The water flow metering device applied to coalbed methane drainage is composed of a common water flowmeter and a three-state separating device, wherein the water flowmeter is connected with a drainage outlet of the three-state separating device. The three-state separating device is designed to be a water storage pool; the periphery of the water storage pool is respectively provided with a water inlet, an air vent, a drainage outlet and a slag tap; an upper sealing piece is arranged at the front end of the air vent, and controls on-off of the air vent through an up-floating ball; a lower sealing piece is arranged at the front end of the drainage outlet, and controls on-off of the drainage outlet through a down-floating ball; a slag tapping valve is arranged at the rear end of the slag tap, and controls on-off of the slag tap through the slag tapping valve. The water flowmeter of the water flow metering device applied to coalbed methane drainage is simple in structure and low in requirements, so that the service life of the water flowmeter can be greatly improved; the water flow metering device applied to coalbed methane drainage can interrupt and continue fluid and meter liquid-state fluid including solid, gas and liquid, and is small in metering error and large in measuring range.
Description
Technical field
The present invention relates to one at the mining initial stage, displacement is carried out to the technology of dynamic monitoring accurately, particularly flowmeter in a kind of coal bed gas extraction.
Background technology
In coal bed gas extraction process, mainly control liquid level by the water extracting in coal bed gas well, and then maintain existing desorption pressures, ensure the exploitation that coal bed gas is lasting, permanent.In mining process, at the especially mining initial stage, displacement is a very important parameter, and therefore accurate-metering displacement is also just very important, is the correct important evidence of formulating the row's of adopting measure and selecting equipment.
The displacement of general coal bed gas well and its residing region have that important associated (at the scheduling initial stage, osiery northern territory aquifer yield is generally at 50～200 m
3/ d, in northern region, indivedual straight wells and horizontal well aquifer yield are larger, and displacement reaches 300m
3/ d, in normal mining process, displacement is less than 10 m sometimes
3/ d.), and be not continuous, and often contain a large amount of ickings and a small amount of gas.Measure with common water meter, ickings is assembled gradually in water meter, often make water meter malfunctioning, and in the situation that gas-liquid two-phase is mobile, common water meter is also difficult to fluid liquid wherein to carry out accurate-metering.
Summary of the invention
The object of this invention is to provide a kind of simple in structure, to water flowmeter require low, can greatly improve the application life of water flowmeter, flowmeter in the fluid liquid metering that can carry out intermittent current and contain solid and gas and the coal bed gas extraction that error in dipping is little, measurement category is large.
Technical scheme of the present invention is:
Flowmeter in coal bed gas extraction, is made up of common water flowmeter and tri-state separation unit, it is characterized in that: water flowmeter is connected with the outfall of tri-state separation unit.Tri-state separation unit is for the solid of draining, gas and water are separated, and water flowmeter is for carrying out accurate measurement to discharge.
Described tri-state separation unit is designed to a reservoir, and reservoir surrounding is respectively equipped with water inlet, exhaust opening, outfall and slag tap, and exhaust opening front end is provided with seal, by the switch of upper floating ball control exhaust opening; Outfall front end is provided with lower seal, by the switch of lower ball float control outfall; Slag tap rear end is provided with deslagging valve, controls the switch of slag tap by deslagging valve.
In described reservoir, be provided with upper limit water level and lower limit water level, upper limit water level is between water inlet and exhaust opening, and lower limit water level, between water inlet and outfall, is determined the time of exhaust and draining by water level.
The invention has the beneficial effects as follows:
Common water flowmeter front end is provided with tri-state separation unit, solid, gas and water are separated, and then measure discharge, avoid ickings to assemble gradually in water flowmeter and damage water flowmeter, thereby greatly improve the application life of water flowmeter, saved use cost.Control automatic vent and draining by upper limit water level and lower limit water level, can carry out the fluid liquid metering of intermittent current and error in dipping is little, measurement category is large.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
The present invention will be described in detail by reference to the accompanying drawings:
As shown in Figure 1, the present invention is made up of common water flowmeter 8 and tri-state separation unit, water flowmeter 8 is connected with the outfall 9 of tri-state separation unit, and tri-state separation unit is for separating the solid of draining, gas and water, and water flowmeter 8 is for carrying out accurate measurement to discharge.This tri-state separation unit is designed to a reservoir 13, and reservoir 13 left upper portion are provided with water inlet 1, top and are provided with that exhaust opening 3, lower right side are provided with outfall 9, bottom is provided with slag tap 11; Exhaust opening 3 front ends are provided with seal 4, control the switch of exhaust opening 3 by upper floating ball 5; Outfall 9 front ends are provided with lower seal 7, control the switch of outfall 9 by lower ball float 6; Slag tap 11 rear ends are provided with deslagging valve 10, control the switch of slag tap 11 by deslagging valve 10.In reservoir 13, be provided with upper limit water level 2 and lower limit water level 12, upper limit water level 2 is between water inlet 1 and exhaust opening 3, and lower limit water level 12, between water inlet 1 and outfall 9, is determined the time of exhaust and draining by water level.
The course of work of tri-state separation unit is as follows: the water that is mixed with ickings and gas enters into reservoir 13 by air inlet port 1, ickings is because gravity sinks to the bottom of reservoir 13, gas floats to reservoir 13 tops and is discharged by exhaust opening 3, and solid ickings, gas and water separate.When the water level in reservoir 13 is during lower than lower limit water level 12, lower ball float 6, due to gravity fall, is blocked lower seal 7, and outfall 9 is closed and not draining; When water level is during higher than lower limit water level 12, lower ball float 6 is because buoyancy of water floats, and outfall 9 is opened beginning draining, in the water of at this moment discharging, there is no gas and solid.When the water level in reservoir 13 is during lower than upper limit water level 2, upper floating ball 5, due to gravity fall, is opened seal 4, and exhaust opening 3 is opened, and the gas part in water is drained; In the time of the high-order upper limit water level 2 of water level, upper floating ball 5 is because buoyancy of water is blocked upper seal 4, and exhaust opening 3 is closed, and prevents from leaking.
By regularly opening deslagging valve 10, the solid ickings of the bottom of reservoir 13 etc. is discharged by slag tap 11.
Claims (3)
1. flowmeter in coal bed gas extraction, is made up of common water flowmeter (8) and tri-state separation unit, it is characterized in that: water flowmeter (8) is connected with the outfall (9) of tri-state separation unit.
2. flowmeter in coal bed gas extraction according to claim 1, it is characterized in that: described tri-state separation unit is designed to a reservoir (13), reservoir (13) surrounding is respectively equipped with water inlet (1), exhaust opening (3), outfall (9) and slag tap (11); Exhaust opening (3) front end is provided with seal (4), controls the switch of exhaust opening (3) by upper floating ball (5); Outfall (9) front end is provided with lower seal (7), controls the switch of outfall (9) by lower ball float (6); Slag tap (11) rear end is provided with deslagging valve (10), controls the switch of slag tap (11) by deslagging valve (10)
3. flowmeter in coal bed gas extraction according to claim 2, it is characterized in that: in described reservoir (13), be provided with upper limit water level (2) and lower limit water level (12), upper limit water level (2) is positioned between water inlet (1) and exhaust opening (3), lower limit water level (12) is positioned between water inlet (1) and outfall (9), determines the time of exhaust and draining by water level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210533683.8A CN103867182A (en) | 2012-12-10 | 2012-12-10 | Water flow metering device applied to coalbed methane drainage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210533683.8A CN103867182A (en) | 2012-12-10 | 2012-12-10 | Water flow metering device applied to coalbed methane drainage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103867182A true CN103867182A (en) | 2014-06-18 |
Family
ID=50906146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210533683.8A Pending CN103867182A (en) | 2012-12-10 | 2012-12-10 | Water flow metering device applied to coalbed methane drainage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103867182A (en) |
-
2012
- 2012-12-10 CN CN201210533683.8A patent/CN103867182A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140618 |