CN206647133U - Rich water coal bed gas extraction drilling automatic drainage system - Google Patents
Rich water coal bed gas extraction drilling automatic drainage system Download PDFInfo
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- CN206647133U CN206647133U CN201720341846.0U CN201720341846U CN206647133U CN 206647133 U CN206647133 U CN 206647133U CN 201720341846 U CN201720341846 U CN 201720341846U CN 206647133 U CN206647133 U CN 206647133U
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- discharge main
- coal slime
- adjutage
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Abstract
Rich water coal bed gas extraction drilling automatic drainage system, main is discharged including coal water coal slime, coal and water separate branch pipe, cinder deposited tube and flexible adjutage, the water inlet of coal water coal slime discharge main is connected with methane gas extraction pipeline and gas pumping union respectively by tee pipe coupling, the delivery port of coal water coal slime discharge main is connected with the water inlet of flexible adjutage, height of the height of the delivery port of coal water coal slime discharge main less than the water inlet of coal water coal slime discharge main, coal water coal slime discharges main and flexible adjutage is fixedly installed in the side wall of tunnel by some groups of installation snap rings and antirust anti-loosening screw fastening structure respectively, the U-shaped structure bending in water side of flexible adjutage is set, height of the height of the water inlet of flexible adjutage higher than the delivery port of flexible adjutage.The utility model operates with simply, is discharged water automation by self gravitation, can effectively solve the draining problem in rich water coal bed gas extraction system.
Description
Technical field
The utility model belong to gas pumping and prevent and treat coal and gas prominent in terms of technical field of mine safety, especially relate to
And rich water coal bed gas extraction drilling automatic drainage system.
Background technology
Coal-bed gas take out in advance be gas control field a commonly used and effectively technological means, coal-bed gas is pre-
The effect taken out is influenced by many factors, mainly may be summarized to be：Coal body self-characteristic factor, geologic(al) factor, extraction technique, it is all
Gas permeability, moisture content size, the original gas pressure in coal seam, crustal stress, local geology construction such as coal body, extraction borehole aperture are big
Small, extraction negative pressure, extraction time etc..Wherein extraction vacuum magnitude is that an important parameter, research show in extraction technique, in coal
In shorter a period of time after body implementation pressure release is anti-reflection, coal body gas permeability is maximum, is the best period of gas pumping, therefore, watt
This extraction vacuum magnitude plays key effect during extraction early stage.During rich water coal bed gas drainage, because coal seam contains
Water rate is higher, plus caused coal dust during drilling construction, and hole wall collapse caused by coal dust ickings, it is easy in gas
Ponding or clogging are formed in extraction pipeline, hinders flow process of the gas in pipeline；On the other hand, if overcoming extraction
The migration extraction negative pressure loss of water and coal petrography impurity in pipeline is larger, promotes work done very little in terms of Gas Flow, coal
The gas pumping effect of layer is poor.Therefore, the water discharge technology during rich water coal bed gas drainage is for improving gas pumping as one pleases
Justice is great.
For the research of the water discharge technology in mine gas extraction system, earliest drainage arrangement is incited somebody to action based on Action of Gravity Field
Water is drained into tank, is periodically manually discharged water, and the greatest drawback of this device is that automatic draining can not be realized, it is arranged
Outlet capacity is very limited, and discharge outlet is easily blocked by impurity, it is not easy to clears up.With updating for water discharge technology, occur one
The technology and device of automatic draining can be realized a bit, but these devices still fail to overcome displacement small, and in water and coal dust
The defects of being easy to block under collective effect.There is document report, in recent years using pressure wind formula drainage arrangement, but this device is main
Applied to the lower draining into drilling, and to the one-tenth porosity of drilling, sealing of hole effect requirements are high, and bore inner need to divide into sleeve pipe, together
When need to set up a set of blower system, package unit cost input is high, and maintenance is complicated, and applicable surface is smaller, and service life is short.
Utility model content
The utility model is in order to solve weak point of the prior art, there is provided a kind of drainability is big, coal and water can divide
From, draining automation, impurity scale removal process is simple and efficient and reusable rich water coal bed gas extraction drilling automatic draining
System, the system is in rich water coal seam and has coal/rock gangway application effect of certain slope optimal.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：The drilling of rich water coal bed gas extraction is certainly
Dynamic drainage system, including coal water coal slime discharge main, coal and water separate branch pipe, cinder deposited tube and flexible adjutage, coal water coal slime
The water inlet of discharge main is connected with methane gas extraction pipeline and gas pumping union respectively by tee pipe coupling, coal water coal slime row
The delivery port for being allowed to dry pipe is connected with the water inlet of flexible adjutage, and the height of the delivery port of coal water coal slime discharge main is less than coal water
The height of the water inlet of coal slime discharge main, coal and water separate branch pipe are provided with two, and the upper end of two coal and water separate branch pipes connects respectively
The bottom of coal water coal slime discharge main is connected on, cinder deposited tube sets parallel to coal water coal slime discharge main and is located at coal water coal slime
Discharge below main, the lower end of two coal and water separate branch pipes is connected to the top of cinder deposited tube, and the discharge of coal water coal slime is dry
Pipe and flexible adjutage are fixedly installed on tunnel by some groups of installation snap rings and antirust anti-loosening screw fastening structure respectively
In side wall, the both ends of cinder deposited tube are respectively arranged with a butterfly valve；The first filtering is provided with coal water coal slime discharge main
Net and the second screen pack, position of first screen pack between two coal and water separate branch pipes, the second screen pack be located at position compared with
Position between the delivery port of low coal and water separate branch pipe and coal water coal slime discharge main；The aperture of first screen pack is 2mm, the
The aperture of two screen packs is 0.5mm；The U-shaped structure bending in water side of flexible adjutage is set, the water inlet of flexible adjutage
Height higher than flexible adjutage delivery port height.
Every group of antirust anti-loosening screw fastening structure includes the resilient insert of screw rod, head protector, packing ring and annular,
Screw rod is provided with two, and two screw rods discharge main and flexible adjutage over and under positioned at coal water coal slime respectively, two spiral shells
Bar is embedded in the side wall of tunnel in the horizontal direction, installation snap ring upper end be enclosed on screw rod and block coal water coal slime discharge main and
Flexible adjutage, the outer end of screw rod are threaded with and will install two nuts of snap ring fastening, and described packing ring is set in spiral shell
On bar, nut inner surface passes through packing ring and resilient insert press fit；
Packing ring offers the first annular groove in the circumferential surface, and head protector is the cylinder-like structure of interior end opening, head protector
Inwall open-mouth it is peripherally disposed have the first locating ring and the second locating ring, head protector inwall is in the first locating ring and
The second annular groove is formed between two locating rings, the second locating ring inner face flushes with head protector inner face, the first annular groove and
The corresponding connection of two annular grooves forms the installation cavity of annular, and described resilient insert is assemblied in installation cavity.
Resilient insert includes the positive stop strip that four radius all sames, central angle are 90 ° of arc-shaped structure, each spacing
The external peripheral surface of bar along the circumferential direction offers twice mounting groove, and one end of each positive stop strip vertically offers one
Individual mounting hole, the second locating ring from-inner-to-outer are corresponding through a mounting hole and the first locating ring screw thread by four positioning screws
Connection, offer on the outside of the middle part of each positive stop strip with the neck that twice mounting groove connects and cross section is L-shaped, in neck
Provided with U-shaped spring, two spring arms of U-shaped spring are correspondingly assemblied in twice mounting groove and coordinated with head protector inwall top pressure, U-shaped
Two spring arms of spring are directed to one end that an adjacent positive stop strip is equipped with positioning screw.
Part of the packing ring excircle on the outside of the first annular groove in it is outer it is thin in thick cone-shaped structure, each positive stop strip is along footpath
It is thin into the outer thickness of thickness in direction.
Height h of the water inlet of flexible adjutage higher than the delivery port of flexible adjutage1>=1.3m, the U of flexible adjutage
Type structural base and the discrepancy in elevation h of flexible adjutage delivery port2≧0.65m。
The control valve of neighbouring tee pipe coupling is provided with coal water coal slime discharge main.
Using above-mentioned technical proposal, inside the tunnel with certain slope, the utility model is installed, it is ensured that be not required to
In the case of applying applied external force, the filtering of the first screen pack and the second screen pack is led to merely with Action of Gravity Field to incite somebody to action
Coal, water separation.The level height difference of the delivery port and water inlet that determine flexible adjutage is calculated according to extraction vacuum magnitude, ensures h1
≧hH2O（hH2OFor corresponding water-column under gas pumping negative pressure, hH2O≥1.3m）That is gh1≧p（P is extraction negative pressure, p >=
13KPa）, for the discrepancy in elevation for avoiding under the influence of extraction negative pressure, the water in the utility model is drawn back gas drainage pipeline herein
In, so that whole system fails；The U-shape structure bottom of flexible adjutage and the discrepancy in elevation h of its delivery port2Also 1/ should be more than
2hH2OI.e.：h2≤ 0.65m, avoid after the utility model device repairs or checks, open in the short time of pump, flexible adjutage
The water of U-shape structure memory storage is drawn back in extraction pipeline, and the safe and reliable automatic draining of whole system is just ensure that with this
Function.
The system is connected with the tee pipe coupling of methane gas extraction pipeline and gas pumping union, can also be gone out in drainage tube Louis
The place installation of existing ponding.During gas drainage under suction, control valve is opened, methane gas extraction pipeline and water in gas pumping union,
The compounding substances such as coal slime enter in coal water coal slime discharge main through tee pipe coupling under gravity, by the first screen pack
（Aperture is 2mm）Filtering screening, the small coal slime of particle, water continue along coal water coal slime discharge main continue to flow downward, particle compared with
Big coal dust, coal slime gradually precipitate accumulation along coal and water separate branch pipe into cinder deposited tube, to prevent that coal and water separate is not abundant enough,
Fluid in coal water coal slime discharge main can pass through the second screen pack（Aperture is 0.5mm）Filter again, contain very little impurities
Water is finally discharged after entering flexible adjutage.
The specific installation method of antirust anti-loosening screw fastening structure and use principle are in the utility model：First four
Individual U-shaped spring is correspondingly installed in the neck and locating slot of four positive stop strips, then a positive stop strip is placed into the second annular groove
It is interior, this positive stop strip is fixed using a positioning screw, then the other three positive stop strip be fixed to using positioning screw successively
In second annular groove, four positioning screws are countersunk head structure, and due to the effect of U-shaped spring, the movable end of four positive stop strips is equal
Protrude the first locating ring inwall and the second locating ring inwall；Then nut is screwed on screw rod, operator holds head protector, is set to
In axial direction firmly pressed towards the second wall direction outside nut and screw rod, because packing ring excircle is outside the first annular groove
The part of side in it is outer it is thin in thick cone-shaped structure, thin structure in the outer thickness of the thickness of each positive stop strip radially, i.e.,
Coniform fit structure between the inwall and packing ring outer wall of four positive stop strips is easy to four positive stop strips being pressed into outside packing ring
In first annular groove of circumference, in the presence of U-shaped spring, four positive stop strip inwalls tightly circle of the top pressure in the first annular groove
On perisporium, head protector is firmly integrally fixed with bolt, plays good locking and moisture-proof role.Due to damp and hot in tunnel,
The antirust anti-loosening screw fastening structure of unique texture is set on screw rod, i.e., using head protector by nut and screw end head cover
Firmly, head protector is not fallen out with packing ring by the way that removable insert is locked, so as to play to screw rod and nut seal, is played good
The moistureproof, effect of anti-corrosion, and nut can be ensured without departing from screw rod.
The utility model can build up substantial amounts of coal dust cinder during whole discharge water in cinder deposited tube, and one
As ensure once to be cleared up dredging work weekly, the operation can pass through closing control valve（Normally open is usually in,）Afterwards, beat
Drive the butterfly valve of cinder deposited tube both ends setting（Usually it is closed）, the instrument of cinder deposited tube is slightly less than using diameter
Dredged, the process operation is simple, and cleaning effect is notable.Without deposition dead angle in coal slime coal dust deposited tube, existing dress is overcome
The drawbacks of putting easily blocking, difficult cleaning.
The drainage pipe diameter of the utility model device can be according to the impurity level size such as the size of displacement, coal dust, slime content, really
Determine the suitable caliber size size of main conduit line in device.Whole system is dry without fallible component, the discharge of main conduit line coal water coal slime
Pipe, the material of coal and water separate branch pipe, cinder deposited tube select coating steel pipe, improve the durability of device；Cinder coal slime etc.
The scale removal process of impurity is simply easy, and for pipeline without deposition dead angle, cleaning effect is obvious, therefore may be reused.This practicality is new
Type operates with simply, is discharged water automation by self gravitation, can effectively solve the draining in rich water coal bed gas extraction system
Problem.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is the structural representation of antirust anti-loosening screw fastening structure in Fig. 2；
Fig. 4 is the structural representation of Fig. 3 middle washers；
Fig. 5 is the top view of removable insert in Fig. 3；
Fig. 6 is the side view of U-shaped spring in Fig. 5.
Embodiment
As shown in figs 1 to 6, rich water coal bed gas extraction drilling automatic drainage system of the present utility model, including coal water coal
Mud discharge main 1, coal and water separate branch pipe 2, cinder deposited tube 3 and flexible adjutage 4, coal water coal slime discharge the water inlet of main 1
It is connected respectively with methane gas extraction pipeline 6 and gas pumping union 7 by tee pipe coupling 5, coal water coal slime discharges the water outlet of main 1
Mouth is connected with the water inlet of flexible adjutage 4, and the height of the delivery port of coal water coal slime discharge main 1 is dry less than the discharge of coal water coal slime
The height of the water inlet of pipe 1, coal and water separate branch pipe 2 are provided with two, and the upper end of two coal and water separate branch pipes 2 is connected to coal water
Coal slime discharges the bottom of main 1, and cinder deposited tube 3 sets parallel to coal water coal slime discharge main 1 and discharged positioned at coal water coal slime
The lower section of main 1, the lower end of two coal and water separate branch pipes 2 are connected to the top of cinder deposited tube 3, coal water coal slime discharge main
1 and flexible adjutage 4 be fixedly installed on lane by some groups of installation snap rings 8 and antirust anti-loosening screw fastening structure 9 respectively
In road side wall 10, the both ends of cinder deposited tube 3 are respectively arranged with a butterfly valve 11；It is provided with coal water coal slime discharge main 1
First screen pack 12 and the second screen pack, position of first screen pack 12 between two coal and water separate branch pipes 2, the second filtering
Net 13 is located at the position between the delivery port of the relatively low coal and water separate branch pipe 2 in position and coal water coal slime discharge main 1；First filtering
The aperture of net 12 is 2mm, and the aperture of the second screen pack 13 is 0.5mm；The U-shaped bending of structure 14 in water side of flexible adjutage 4
Set, the height of the water inlet of flexible adjutage 4 is higher than the height of the delivery port of flexible adjutage 4.
Every group of antirust anti-loosening screw fastening structure 9 includes the bullet of screw rod 15, head protector 16, packing ring 17 and annular
Property inserts, screw rod 15 be provided with two, two screw rods 15 respectively positioned at coal water coal slime discharge main 1 and flexible adjutage 4 top
And lower section, two screw rods 15 are embedded in tunnel side wall 10 in the horizontal direction, installation snap ring 8 upper end is enclosed on screw rod 15 and blocked
Firmly coal water coal slime discharge main 1 and flexible adjutage 4, the outer end of screw rod 15 are threaded with fasten installation snap ring 8 two
Individual nut 18, described packing ring 17 are set on screw rod 15, and the inner surface of nut 18 is crimped by packing ring 17 with resilient insert matches somebody with somebody
Close.
Packing ring 17 offers the first annular groove 19 in the circumferential surface, and head protector 16 is the cylinder-like structure of interior end opening,
The inwall open-mouth of head protector 16 is peripherally disposed the first locating ring 20 and the second locating ring 21, and the inwall of head protector 16 exists
The second annular groove is formed between first locating ring 20 and the second locating ring 21, the inner face of the second locating ring 21 is inner with head protector 16
Face flushes, and the first annular groove 19 is corresponding with the second annular groove to connect the installation cavity for forming annular, the assembling of described resilient insert
In installation cavity.
Resilient insert includes the positive stop strip 22 that four radius all sames, central angle are 90 ° of arc-shaped structure, each limit
The external peripheral surface of position bar 22 along the circumferential direction offers twice mounting groove 23, and one end of each positive stop strip 22 is vertically
A mounting hole 24 is offered, the from-inner-to-outer of the second locating ring 21 is corresponding through a mounting hole 24 by four positioning screws 27
It is threadedly coupled, is offered on the outside of the middle part of each positive stop strip 22 connecting and horizontal with twice mounting groove 23 with the first locating ring 20
The L-shaped neck 25 in section, neck 25 is interior to be provided with U-shaped spring 26, and two spring arms of U-shaped spring 26 are correspondingly assemblied in twice installation
Coordinate in groove 23 and with the inwall top pressure of head protector 16, two spring arms of U-shaped spring 26 are directed to an adjacent positive stop strip 22 and worn
There is one end of positioning screw 27.
The excircle of packing ring 17 is in outer thin interior thick cone-shaped structure in the part 28 in the outside of the first annular groove 19, each spacing
It is thin in the outer thickness of the thickness of bar 22 radially.
Height h of the water inlet of flexible adjutage 4 higher than the delivery port of flexible adjutage 41>=1.3m, flexible adjutage 4
The bottom of U-shape structure 14 and the flexible delivery port of adjutage 4 discrepancy in elevation h2≧0.65m。
The control valve 29 of neighbouring tee pipe coupling 5 is provided with coal water coal slime discharge main 1.
Inside the tunnel with certain slope, the utility model is installed, it is ensured that need not apply applied external force
In the case of, the filtering that the first screen pack 12 and the second screen pack 13 are led to merely with Action of Gravity Field can separate coal, water.According to
Extraction vacuum magnitude calculates the level height difference of the delivery port and water inlet that determine flexible adjutage 4, ensures h1≧hH2O（hH2OFor watt
Corresponding water-column under this extraction negative pressure, hH2O≥1.3m）That is gh1≧p（P is extraction negative pressure, p >=13KPa）, the discrepancy in elevation herein
For avoiding under the influence of extraction negative pressure, the water in the utility model is drawn back in gas drainage pipeline, so that whole system
System failure；The bottom of U-shape structure 14 of flexible adjutage 4 and the discrepancy in elevation h of its delivery port2Also 1/2h should be more thanH2OI.e.：h2≧
0.65m, avoid after the utility model device repairs or checks, open in the short time of pump, the U-shape structure 14 of flexible adjutage 4
The water of memory storage is drawn back in extraction pipeline, and the function of the safe and reliable automatic draining of whole system is just ensure that with this.
The system is connected with the tee pipe coupling 5 of methane gas extraction pipeline 6 and gas pumping union 7, also can be in extraction pipeline
Easily there is the place installation of ponding.During gas drainage under suction, control valve 29, methane gas extraction pipeline 6 and gas pumping union 7 are opened
In water, the compounding substances such as coal slime enter under gravity through tee pipe coupling 5 in coal water coal slime discharge main 1, by the
One screen pack 12（Aperture is 2mm）Filtering screening, the small coal slime of particle, water continue to continue downwards along coal water coal slime discharge main 1
Flowing, the larger coal dust of particle, coal slime enter the gradually precipitation accumulation of cinder deposited tube 3 along coal and water separate branch pipe 2, to prevent coal water
Separation is not abundant enough, and the fluid in coal water coal slime discharge main 1 can pass through the second screen pack 13（Aperture is 0.5mm）Cross again
Filter, the water containing very little impurities are finally discharged after entering flexible adjutage 4.
The specific installation method of the fastening structure 9 of antirust anti-loosening screw 15 and use principle are in the utility model：First
Four U-shaped springs 26 are corresponded to and are installed in the neck 25 and locating slot of four positive stop strips 22, then a positive stop strip 22 is placed
Into the second annular groove, this positive stop strip 22 is fixed using a positioning screw 27, then successively the other three positive stop strip 22
It is fixed to using positioning screw 27 in the second annular groove, four positioning screws 27 are countersunk head structure, due to the work of U-shaped spring 26
With the movable end of four positive stop strips 22 protrudes the inwall of the first locating ring 20 and the inwall of the second locating ring 21；Then nut 18
It is screwed on screw rod 15, operator holds head protector 16, is set to outside nut 18 and screw rod 15 in axial direction towards the second wall
Direction exerts oneself to press, due to the excircle of packing ring 17 in the part 28 in the outside of the first annular groove 19 in outer thin interior thick coniform knot
Structure, thin structure, i.e., inwall and the packing ring 17 of four positive stop strips 22 in the outer thickness of the thickness of each positive stop strip 22 radially
Coniform fit structure between outer wall is easy to four positive stop strips 22 being pressed into the first annular groove 19 of the excircle of packing ring 17
Interior, in the presence of U-shaped spring 26, four inwalls of positive stop strip 22 tightly in the circumferential wall of the first annular groove 19, prevent by top pressure
Helmet 16 is firmly integrally fixed with bolt, plays good locking and moisture-proof role.Due to damp and hot in tunnel, in screw rod 15
The upper fastening structure 9 of antirust anti-loosening screw 15 that unique texture is set, i.e., using head protector 16 by nut 18 and the end of screw rod 15
Head-shield is lived, and head protector 16 is not fallen out with packing ring 17 by the way that removable insert is locked, close to screw rod 15 and nut 18 so as to play
Envelope, plays a part of good protection against the tide, anti-corrosion, and nut 18 can be ensured without departing from screw rod 15.
The utility model can build up substantial amounts of coal dust cinder during whole discharge water in cinder deposited tube 3, and one
As ensure once to be cleared up dredging work weekly, the operation can pass through closing control valve 29（Normally open is usually in,）Afterwards,
Open the butterfly valve 11 that the both ends of cinder deposited tube 3 are set（Usually it is closed）, it is slightly less than cinder deposited tube 3 using diameter
Instrument dredged, the process operation is simple, and cleaning effect is notable.Without deposition dead angle in coal slime coal dust deposited tube, overcome
The drawbacks of existing apparatus easily blocks, difficult cleaning.
The present embodiment not makees any formal limitation, every foundation to shape of the present utility model, material, structure etc.
Any simple modification, equivalent change and modification that the technical essence of the utility model is made to above example, belongs to this reality
With the protection domain of new technique scheme.
Claims (6)
- The automatic drainage system 1. rich water coal bed gas extraction drills, it is characterised in that：Including coal water coal slime discharge main, moisture content of coal From branch pipe, cinder deposited tube and flexible adjutage, the water inlet of coal water coal slime discharge main by tee pipe coupling respectively with watt This extraction pipeline connects with gas pumping union, and the water inlet of the delivery port and flexible adjutage of coal water coal slime discharge main connects Connect, the height of the delivery port of coal water coal slime discharge main is less than the height of the water inlet of coal water coal slime discharge main, coal and water separate Branch pipe is provided with two, and the upper end of two coal and water separate branch pipes is connected to the bottom of coal water coal slime discharge main, cinder deposition Pipe sets and is located at below coal water coal slime discharge main, the lower end of two coal and water separate branch pipes parallel to coal water coal slime discharge main The top of cinder deposited tube is connected to, coal water coal slime discharge main and flexible adjutage pass through some groups of installation snap rings respectively It is fixedly installed on antirust anti-loosening screw fastening structure in the side wall of tunnel, the both ends of cinder deposited tube are respectively arranged with one Butterfly valve；The first screen pack and the second screen pack are provided with coal water coal slime discharge main, the first screen pack is located at two coal water The position between branch pipe is separated, the second screen pack is located at the relatively low coal and water separate branch pipe in position and discharges going out for main with coal water coal slime Position between the mouth of a river；The aperture of first screen pack is 2mm, and the aperture of the second screen pack is 0.5mm；The water outlet of flexible adjutage U-shaped structure bending is held to set, the height of the water inlet of flexible adjutage is higher than the height of the delivery port of flexible adjutage.
- The automatic drainage system 2. rich water coal bed gas extraction according to claim 1 drills, it is characterised in that：Every group of antirust Anti-loosening screw fastening structure includes the resilient insert of screw rod, head protector, packing ring and annular, and screw rod is provided with two, two Root screw rod discharges main and flexible adjutage over and under positioned at coal water coal slime respectively, and two screw rods are pre- in the horizontal direction It is embedded in the side wall of tunnel, installation snap ring upper end is enclosed on screw rod and blocks coal water coal slime discharge main and flexible adjutage, screw rod Outer end be threaded with two nuts of snap ring fastening will be installed, described packing ring is set on screw rod, table on the inside of nut Face passes through packing ring and resilient insert press fit；Packing ring offers the first annular groove in the circumferential surface, and head protector is the cylinder-like structure of interior end opening, head protector it is interior Wall open-mouth is peripherally disposed the first locating ring and the second locating ring, and head protector inwall is determined in the first locating ring and second The second annular groove is formed between the ring of position, the second locating ring inner face flushes with head protector inner face, the first annular groove and the second circle The corresponding connection of annular groove forms the installation cavity of annular, and described resilient insert is assemblied in installation cavity.
- The automatic drainage system 3. rich water coal bed gas extraction according to claim 2 drills, it is characterised in that：Resilient insert It is the positive stop strip of 90 ° of arc-shaped structure including four radius all sames, central angle, the external peripheral surface of each positive stop strip is equal Twice mounting groove is along the circumferential direction offered, one end of each positive stop strip vertically offers a mounting hole, and second is fixed Position ring from-inner-to-outer is threadedly coupled by the way that four positioning screws are corresponding through a mounting hole with the first locating ring, each positive stop strip Middle part on the outside of offer with the neck that twice mounting groove connects and cross section is L-shaped, is provided with U-shaped spring in neck, it is U-shaped Two spring arms of spring are correspondingly assemblied in twice mounting groove and coordinated with head protector inwall top pressure, two spring arms of U-shaped spring It is directed to one end that an adjacent positive stop strip is equipped with positioning screw.
- The automatic drainage system 4. rich water coal bed gas extraction according to claim 3 drills, it is characterised in that：Packing ring is cylindrical Week, the part on the outside of the first annular groove was in outer thin interior thick cone-shaped structure, and the thickness of each positive stop strip radially is outer It is thin in thickness.
- 5. the rich water coal bed gas extraction drilling automatic drainage system according to claim any one of 1-4, it is characterised in that： Height h of the water inlet of flexible adjutage higher than the delivery port of flexible adjutage1>=1.3m, the U-shape structure bottom of flexible adjutage Portion and the discrepancy in elevation h of flexible adjutage delivery port2≧0.65m。
- 6. the rich water coal bed gas extraction drilling automatic drainage system according to claim any one of 1-4, it is characterised in that： The control valve of neighbouring tee pipe coupling is provided with coal water coal slime discharge main.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720341846.0U CN206647133U (en) | 2017-04-01 | 2017-04-01 | Rich water coal bed gas extraction drilling automatic drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720341846.0U CN206647133U (en) | 2017-04-01 | 2017-04-01 | Rich water coal bed gas extraction drilling automatic drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206647133U true CN206647133U (en) | 2017-11-17 |
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ID=60274670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720341846.0U Withdrawn - After Issue CN206647133U (en) | 2017-04-01 | 2017-04-01 | Rich water coal bed gas extraction drilling automatic drainage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206647133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060877A (en) * | 2017-04-01 | 2017-08-18 | 河南理工大学 | Rich water coal bed gas extraction drilling automatic drainage system |
-
2017
- 2017-04-01 CN CN201720341846.0U patent/CN206647133U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060877A (en) * | 2017-04-01 | 2017-08-18 | 河南理工大学 | Rich water coal bed gas extraction drilling automatic drainage system |
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