CN207847688U - A kind of down-hole mining perturbing area ground coal bed gas well gas drainage under suction device - Google Patents
A kind of down-hole mining perturbing area ground coal bed gas well gas drainage under suction device Download PDFInfo
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- CN207847688U CN207847688U CN201721886647.4U CN201721886647U CN207847688U CN 207847688 U CN207847688 U CN 207847688U CN 201721886647 U CN201721886647 U CN 201721886647U CN 207847688 U CN207847688 U CN 207847688U
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- suction device
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Abstract
The utility model is specifically related to a kind of down-hole mining perturbing area ground coal bed gas well gas drainage under suction device, on down-hole mining perturbing area ground, individual well casing pressure, which is more than when 50kpa is less than system collection defeated pressure, applies the device, and it includes mainly pipe pressurizing machine, well head number vacuum table, oxygen sensor, methane transducer, pneumatic filter, moisture separator, flowmeter to set.Air inlet metal hose one end connects well head outlet line through pneumatic filter connecting pipe supercharger; coal bed gas enters moisture separator by exhaust metal hose after supercharging and carries out aqueous vapor separation; aqueous vapor separation after gas is delivered to the utilization of coal bed gas gathering station after flowmeter measures; oxygen concentration and methane concentration in oxygen sensor and methane transducer monitoring coal bed gas is arranged in pipe pressurizing machine front end; chain control pipe pressurizing machine stoppage protection after concentration over-standard, and the casing pressure that well head number vacuum table monitors allows manually to shut down device when pressure less than equipment.
Description
Technical field
The utility model is related to down-hole mining perturbing area ground gas exhaust technology fields, are related to a kind of ground coal bed gas well
Gas drainage under suction device when casing pressure is less than system collection defeated pressure.
Background technology
It is well known that the manufacturing parameter of ground coal bed gas well can change with digging in down-hole mining perturbing area, it is micro-
Positive pressure, low yield, anhydrous, high osmosis are the main features of perturbing area ground coal bed gas well.These well well head pressures are less than
0.1mpa, some even negative pressure, and coal bed gas gathering station, supervisor's line pressure are generally all greater than 0.1Mpa, due to
Well head pressure is less than conventional gathering line pressure or gathering station header pressure cause coal bed gas can not the defeated utilization of proper set, usually adopt
It is directly will empty or light a fire in coal bed gas well site burn-up or closing well processing to take processing method, and there is only environmental protection and safety
The problem of aspect, and significant wastage coal bed gas resource, cause environmental pollution.
To solve the problems, such as that down-hole mining perturbing area coal bed gas well can not collect defeated utilization because well head pressure is too low, coal is avoided
Layer gas while polluting the present situation of environment in the invalid discharge in well site, is further reduced fire damp and protrudes risk.The utility model
A kind of special gathering and transporting device is provided, which solves defeated utilize of the gas collection of down-hole mining perturbing area ground coal bed gas well to ask
Topic, the wasting of resources and environmental pollution caused by avoiding closing well, invalid discharge, improves individual well recovery ratio and the service time limit.
The utility model provides a kind of underground perturbing area coal bed gas well watt easy to operate, quick for installation, safe and reliable
This extraction gathering and transporting device solves the problems, such as that perturbing area coal bed gas is difficult to collect defeated and utilizes.
Invention content
The utility model is to solve down-hole mining perturbing area ground coal bed gas well not collecting defeated profit because well head pressure is too low
With the technical issues of, and then provide a kind of down-hole mining perturbing area ground coal bed gas well gas drainage under suction device.
The utility model adopts the following technical solution：
A kind of down-hole mining perturbing area ground coal bed gas well gas drainage under suction device, including sequentially connected pipe pressurizing machine,
Moisture separator and gathering station, the outlet line of the inlet end connection coal bed gas well well head of pipe pressurizing machine, pipe pressurizing machine
Be sequentially connected on air inlet pipeline and pneumatic filter, oxygen sensor, methane transducer, check valve be installed, moisture separator and
Connecting line between gathering station is equipped with flowmeter；Digital vacuum table is installed at the coal bed gas well well head.
The air inlet pipeline and gas exhaust piping of the pipe pressurizing machine be all made of flexible, light weight, it is corrosion-resistant, antifatigue,
The operating pressure of the DN50 flange form metal bellows of high-low temperature resistant, metal hose is 0.25~2.5Mpa.
The preset concentration alarming value of the methane transducer is no more than 30%.
The preset concentration alarming value of the methane transducer is no more than 8%.The oxygen sensor and methane transducer connect
Lock control pipe pressurizing machine（7）It shuts down.
The flow is calculated as anti-explosion type gas turbine flowmeter.
The case structure that the pipe pressurizing machine is installed for ease of transport.
It is described number vacuum table be can memory-type, range be -100Kpa arrive 100Kpa.
I.e. air inlet metal hose one end connects individual well outlet line, and the other end is connected to the air entry of pipe pressurizing machine, when
After pipe pressurizing machine starts, the gas in pit shaft is by well head outlet line intake line supercharger, at pipe pressurizing machine supercharging
Enter moisture separator after reason to detach, gathering station utilization is delivered to after being measured by flowmeter.Device passes through list when working normally
It prevents from flowing backwards to valve control gas from well head to gathering station one-way flow.When oxygen, methane concentration are exceeded, related sensor is anti-
Feedback signal is to pipe pressurizing machine, pipe pressurizing machine stoppage protection.Using this pressure of well head vacuum table monitoring pit shaft Neva, be less than-
Exceed equipment Rated throughput when 50kpa, manually shuts down device.
The utility model has the advantages that compared with prior art:
（1）The utility model solve down-hole mining perturbing area coal bed gas well because casing pressure is too low can not collect it is defeated utilize ask
Topic, avoids coal bed gas in the invalid discharge in well site, while polluting the present situation of environment.
（2）By box-type skid supercharger application, the Fast Installation of perturbing area coal bed gas well gas drainage under suction equipment is realized,
Installation timeliness is improved, is improved work efficiency.
（3）By the installation of coal bed gas well well mouth check valve, the one-way flow of air-flow ensure that, gas after avoiding power-off from shutting down
Body reflux causes fire damp to protrude.
（4）By the application of lambda sensor, methane transducer, individual well gas and oxygen concentration, exceeded rear chain control are monitored
Tubing giving sufficient strength supercharger stoppage protection, safe and reliable protection is provided for device.
（5）Gas carries out gas-water separation after the supercharging of pipe pressurizing machine using moisture separator, realizes the condensation of output gas
Blowdown afterwards reduces the hydrops amount into collection transmission pipe network.
Description of the drawings
Fig. 1 is that row's ickings apparatus structure schematic diagram is returned in coal bed gas well cycle water filling.
It is marked in figure as follows：
1- number vacuum tables, 2- pneumatic filters, 3- oxygen sensors, 4- methane transducers, 5- check valves, 6- air inlet gold
Category hose, 7- pipe pressurizing machines, 8- exhaust metal hoses, 9- moisture separators, 10- flowmeters, 11- gathering stations, 12- are adopted underground
Dig perturbing area, the coal seams 13-.
Specific implementation mode
Down-hole mining perturbing area ground coal bed gas well gas drainage under suction device as shown in the figure, air inlet metal hose one end
Well head outlet line is connected through pneumatic filter connecting pipe supercharger, coal bed gas is entered after supercharging by exhaust metal hose
Moisture separator carries out aqueous vapor separation, and coal bed gas gathering station, pipe pressurizing machine are delivered to after flowmeter measures after aqueous vapor separation
Oxygen sensor and methane transducer detection coal bed gas oxygen concentration and methane concentration, exceeded rear chain control pipeline is arranged in front end
Supercharger stoppage protection, check valve controls coal bed gas out of pit shaft to gathering station one-way flow in device operational process, and well head is negative
Gas pressure in table detection pit shaft is pressed, manually shuts down device when less than -50kpa.
The methane transducer concentration alarming value is set as 30%, and 3 concentration alarming value of oxygen sensor is set as 8%, increases with pipeline
Press 7 realizes chain control.
The air inlet metal hose and exhaust metal hose use high pressure resistant pipe, operating pressure：0.25~2.5Mpa.
The flowmeter uses gas turbine meter, range to match with gas production.
Prepare before construction：According to the special moisture trap one of the construction spare QSFL coal bed gas of demand, DN50 flange form gold
Belong to several corrugated flexible hose, coal bed gas pipe special supercharger one and the matched individual event valve of well head outlet line one, well head number
Word vacuum table one, methane, oxygen sensor be one each, coal bed gas pneumatic filter one, the gas-turbine stream for matching range
Gauge one.
Operational procedure：
By pipe pressurizing machine, moisture separator, pneumatic filter, methane transducer, oxygen sensor DN50 flange forms
Metal bellow carries out chain control by diagram requirement connection, methane transducer and oxygen sensor with pipe pressurizing machine, will
Well head number vacuum table is mounted on the left of well head on outlet line, and flowmeter is mounted on by diagram on gas manifold line, completes peace
Dress.
The utility model opens pipeline supercharger in normal work, and gas is laggard through pneumatic filter filtering in pit shaft
Row supercharging is delivered to gathering station utilization by further gas-water separation, and methane transducer and oxygen sensor connect in the process
Whether continuous monitoring methane, oxygen concentration exceeded, once two indexs have one it is exceeded will make pipe pressurizing machine interlocking action into
Row stoppage protection.
The device or element of without specific instruction are the prior art in the utility model, what those skilled in the art used
It is its conventional func and principle.
Claims (5)
1. a kind of down-hole mining perturbing area ground coal bed gas well gas drainage under suction device, it is characterised in that：Including sequentially connected pipe
Road supercharger（7）, moisture separator（9）And gathering station（11）, pipe pressurizing machine（7）Inlet end connection coal bed gas well well head
Outlet line, pipe pressurizing machine（7）Air inlet pipeline on be sequentially connected pneumatic filter be installed（2）, oxygen sensor（3）、
Methane transducer（4）, check valve（5）, moisture separator（9）And gathering station（11）Between connecting line be equipped with flowmeter
（10）；Digital vacuum table is installed at the coal bed gas well well head（1）.
2. ground coal bed gas well gas drainage under suction device in down-hole mining perturbing area according to claim 1, it is characterised in that：Institute
State pipe pressurizing machine（7）Air inlet pipeline and gas exhaust piping be all made of metal hose, the operating pressure of metal hose is 0.25~
2.5Mpa 。
3. ground coal bed gas well gas drainage under suction device in down-hole mining perturbing area according to claim 2, it is characterised in that：Institute
State methane transducer（4）Preset concentration alarming value be no more than 30%.
4. ground coal bed gas well gas drainage under suction device in down-hole mining perturbing area according to claim 3, it is characterised in that：Institute
State methane transducer（4）Preset concentration alarming value be no more than 8%.
5. ground coal bed gas well gas drainage under suction device in down-hole mining perturbing area according to claim 4, it is characterised in that：Institute
State flowmeter（10）For gas turbine meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721886647.4U CN207847688U (en) | 2017-12-29 | 2017-12-29 | A kind of down-hole mining perturbing area ground coal bed gas well gas drainage under suction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721886647.4U CN207847688U (en) | 2017-12-29 | 2017-12-29 | A kind of down-hole mining perturbing area ground coal bed gas well gas drainage under suction device |
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| Publication Number | Publication Date |
|---|---|
| CN207847688U true CN207847688U (en) | 2018-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721886647.4U Active CN207847688U (en) | 2017-12-29 | 2017-12-29 | A kind of down-hole mining perturbing area ground coal bed gas well gas drainage under suction device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499196A (en) * | 2019-05-13 | 2019-11-26 | 宁波鲍斯能源装备股份有限公司 | A kind of whole sledge booster station gas collecting apparatus |
| CN111648819A (en) * | 2020-04-28 | 2020-09-11 | 王一帆 | Coal mine gas pressure building extraction method and system |
| CN113019054A (en) * | 2021-03-31 | 2021-06-25 | 西安科技大学 | Gas filtering, cooling and purifying device and method for gas extraction pipeline |
-
2017
- 2017-12-29 CN CN201721886647.4U patent/CN207847688U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499196A (en) * | 2019-05-13 | 2019-11-26 | 宁波鲍斯能源装备股份有限公司 | A kind of whole sledge booster station gas collecting apparatus |
| CN111648819A (en) * | 2020-04-28 | 2020-09-11 | 王一帆 | Coal mine gas pressure building extraction method and system |
| CN113019054A (en) * | 2021-03-31 | 2021-06-25 | 西安科技大学 | Gas filtering, cooling and purifying device and method for gas extraction pipeline |
| CN113019054B (en) * | 2021-03-31 | 2022-08-30 | 西安科技大学 | Gas filtering, cooling and purifying device and method for gas extraction pipeline |
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