CN108693069A - Ickings desorption of mash gas characteristic parameter drill with brill measurement device - Google Patents
Ickings desorption of mash gas characteristic parameter drill with brill measurement device Download PDFInfo
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- CN108693069A CN108693069A CN201810918137.3A CN201810918137A CN108693069A CN 108693069 A CN108693069 A CN 108693069A CN 201810918137 A CN201810918137 A CN 201810918137A CN 108693069 A CN108693069 A CN 108693069A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
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Abstract
The invention discloses a kind of drilling ickings desorption of mash gas characteristic parameters to be connected with brill measurement device, including double-wall drill pipe, outer tube and drill bit, the front end of outer tube with drill bit;It is equipped with installation cavity between outer tube and drill bit, is installed in installation cavity and is located at the front side of pipe inner carrier formula sealing device equipped with measurement device and pipe inner carrier formula sealing device, measurement device;Double-wall drill pipe includes double-wall drill pipe outer tube, and double-wall drill pipe outer tube inner sleeve is installed with the double-wall drill pipe inner tube with its clearance fit, and forms expansion clearance between double-wall drill pipe outer tube and double-wall drill pipe inner tube;Double-wall drill pipe inner tube passes through drill rod connector and the rear end airtight connection with piston outer tube, double-wall drill pipe outer tube are fixedly connected with drill rod connector, and double-wall drill pipe outer tube housing is installed with drilling packing device.The drilling ickings desorption of mash gas characteristic parameter of the present invention can not be removed brill and measure coal-bed gas parameter, improve the continuity for measuring work and work of drilling with measurement device is bored during drilling.
Description
Technical field
It is specific for one kind the invention belongs to the pressure or volumetric analysis field of material technology by measuring gas or steam
Ickings desorption of mash gas characteristic parameter drill with brill measurement device.
Background technology
Coal and gas prominent is to seriously threaten one of major casualty of Safety of Coal Mine Production.In decades, China to its into
It has gone a large amount of and fruitful research, has formd the comprehensive outburst control system of a set of " quaternity ".In process of coal mining,
The measurement of coal-bed gas parameter is always the premise of gaseous mine safe working, and especially timely and effective measure of Gas explosion burns is for I
State's high-efficiency mine construction one of must solve the problems, such as.Currently, coal-bed gas parametric measurement mostly by from coal seam drilling take out coal sample,
It places and is measured in specific apparatus, generally there are sampling equipments to require high, measurement work continuity for this assay method
The problems such as poor, may seriously affect measurement result precision, cannot accurately reflect coal-bed gas preservation property.
It is, therefore, desirable to provide a kind of new measuring device, can not remove brill during drilling, drill and measured to which
Which, makes measurement be carried out continuously with two kinds of underground work of drilling, and improves the efficiency of whole pit mining.
Invention content
It is filled in view of this, the purpose of the present invention is to provide a kind of drilling ickings desorption of mash gas characteristic parameters with measurement is bored
It sets, can not remove brill during drilling and measure coal-bed gas parameter, improve the continuity for measuring work and work of drilling.
In order to achieve the above objectives, the present invention provides the following technical solutions:
A kind of drilling ickings desorption of mash gas characteristic parameter is described with boring measurement device, including double-wall drill pipe, outer tube and drill bit
Drill rod connector is equipped between double-wall drill pipe and the outer tube, the front end of the outer tube is connected with the drill bit;
Installation cavity is equipped between the outer tube and the drill bit, installation is equipped with living in measurement device and pipe in the installation cavity
Plug sealing device, the measurement device are located at the front side of the pipe inner carrier formula sealing device;
The outer diameter of the measurement device is less than the internal diameter of the installation cavity, and the rear end of the measurement device is equipped with connection
Head;
The pipe inner carrier formula sealing device includes the piston outer tube that outer diameter is less than the installation cavity internal diameter, outside the piston
The front end of pipe is equipped with front end limiting plate, rear end is equipped with rear end spacing ring, is formed between the front end limiting plate and rear end spacing ring
Plunger shaft is respectively equipped with front end connecting hole and rear end connecting hole on the both ends side wall of the plunger shaft, and is set in the plunger shaft
There is piston mechanism;The piston mechanism closes the rear end connecting hole and opens the front end connecting hole in a free state;And
The piston mechanism closes the front end connecting hole when being directed toward the axial force in the drill bit direction by the double-wall drill pipe
And open the rear end connecting hole;
The front end of the piston outer tube and the connector airtight connection, and the front end limiting plate is equipped with for being connected to
The connecting hole of the measurement device and the plunger shaft;
The double-wall drill pipe includes double-wall drill pipe outer tube, and the double-wall drill pipe outer tube inner sleeve is installed with and its clearance fit
Double-wall drill pipe inner tube, and form expansion clearance between the double-wall drill pipe outer tube and double-wall drill pipe inner tube;The double-wall drill pipe
Inner tube pass through the drill rod connector and with the rear end airtight connection of the piston outer tube, the double-wall drill pipe outer tube and the brill
Bar connector is fixedly connected, and the double-wall drill pipe outer tube housing is installed with drilling packing device;
The drilling packing device includes the outer loop bar being fixedly set in outside the double-wall drill pipe outer tube, the outer loop bar packet
Include loop bar leading portion, loop bar back segment and the inflatable sections between the loop bar leading portion and loop bar back segment, the inflatable sections packet
The expandable rubber being sleeved on outside the double-wall drill pipe outer tube is included, the both ends of the expandable rubber are set with to be protected equipped with sealing
Retaining ring is equipped with the prominent gap of expansion between two seal protection rings, and the double-wall drill pipe outer tube is equipped with for being connected to
The expansion connecting hole of the expandable rubber and the expansion clearance;
The rear end periphery wall of the piston outer tube is equipped with the sealing ring to extend radially outwardly, the sealing ring and the installation
Close fit between the inner wall of chamber, and the sealing ring is located at rear side of the rear end connecting hole backwards to the drill bit;Or it is described
The sealing structure for being located at the expansion connecting hole front end is equipped between double-wall drill pipe inner tube and the both arms drilling rod outer tube;Or it is described
Sealing structure is equipped between double-wall drill pipe inner tube and the drill rod connector;
The front end surface of the drill bit is equipped with deslagging aperture, and the side wall of the drill bit is equipped with the cooling for cooling
Aperture, the gap of the deslagging aperture and cooling aperture between the installation cavity and the measurement device are connected.
Further, strainer is equipped between the front end limiting plate and the connector.
Further, annular is laid with pick in the outer pick of a circle and a circle on the front end face of the drill bit, it is described in cut
Tooth position is within the outer pick.
Further, the deslagging aperture is arranged within the interior pick, and the deslagging hole separation is set as at least
One.
Further, the measurement device includes the front housing and rear shell of airtight connection, and shell in the rear is arranged in the connector
Rear end face on, and be equipped with measuring cell in the connector, be equipped in the rear shell and measure circuit and storage installation cavity, it is described
Power supply installation cavity is equipped in front housing.
Further, the front housing is fixedly connected with the drill bit, and is equipped in the rear shell side body described for being connected to
The outer apertured in the gap between deslagging aperture and the installation cavity and the measurement device.
Further, the piston outer tube includes front end outer tube, intermediate connection tube and rear end outer tube, the intermediate connection tube
Both ends are fixedly connected with the front end outer tube and rear end outer tube respectively;The front end limiting plate is arranged in the front end outer tube,
The rear end spacing ring setting is held in outer tube in the rear, the front end outer tube and the connector airtight connection.
Further, the piston mechanism includes the fixing sleeve being fixedly mounted in the middle part of the plunger shaft, in the fixing sleeve
Set is installed with guide rod, and the front end fixed installation of the fixing sleeve is equipped with the stop collar being sleeved on the guide rod, rear end is equipped with
The rear end of the spacing ring extended radially inwardly, the guide rod is equipped with the connecting rod being sleeved in the spacing ring that is slidably matched, and
Resetting spring of the suit between the stop collar and the connecting rod on the guide rod;The guide rod stretches out the stop collar
Front end be fixedly mounted be equipped with forward bolt piston head, the connecting rod stretch out the spacing ring rear end be fixedly mounted be equipped with rear end live
Chock plug, the axial distance between the front end connecting hole and the rear end spacing ring are more than the axial length of the piston mechanism,
Axial distance between the rear end connecting hole and the front end limiting plate is more than the axial length of the piston mechanism.
Further, positioning pin is equipped between the intermediate connection tube and the fixing sleeve.
The beneficial effects of the present invention are:
The present invention drilling ickings desorption of mash gas characteristic parameter with bore measurement device use process is as follows:
In drilling process, intake from double-wall drill pipe inner tube first, piston mechanism by the power towards drill bit direction, after
Connecting hole is held to open, front end connecting hole closing, flow enters the gap between piston outer tube and installation cavity from rear end connecting hole
In, and flowed out out of deslagging aperture and cooling aperture respectively, two bursts of flows each serve as the effect of deslagging and drill bit cooling;Flow
Take space discharge of the slag between drilling tool and drilling;
It when drill bit gets to specified measurement position, empties, cuts off the water, piston mechanism is in free state, i.e. rear end connecting hole
Closing, front end connecting hole are opened;A distance is then crept into, coal is stripped down from the coal wall of front, is moved back after boring certain distance,
In gap between double-wall drill pipe outer tube and double-wall drill pipe inner tube inject certain pressure water, due to the rear end of piston outer tube outside
Peripheral wall is equipped with the sealing ring with installation cavity close fit, and flow cannot be introduced into installation cavity at this time, the expanded connection of flow
Hole enters in expanded rubber, drives expanded rubber expanding distortion, deformed expanded rubber radial from the prominent gap location of expansion
It protrudes outward, seals up drilling, form one section of confined space Zi drilling bottom end at expanded rubber;In the confined space,
The gas of coal desorption to from drill bit, is entered through front end connecting hole and connecting hole in measurement device, measurement device from drilling bottom end
Measure the signal and record storage of the desorption of mash gas pressure of coal;After being measured, deslagging carries out next cycle, and so on,
The continuity for measuring work and work of drilling can be realized.
In summary, drilling ickings desorption of mash gas characteristic parameter of the invention, can be in the process of drilling with measurement device is bored
In, it does not remove brill and measures coal-bed gas parameter, improve the continuity for measuring work and work of drilling, and measurement essence can be effectively improved
Degree.
Description of the drawings
In order to keep the purpose of the present invention, technical solution and advantageous effect clearer, the present invention provides following attached drawing and carries out
Explanation:
Fig. 1 is present invention drilling ickings desorption of mash gas characteristic parameter with the structural schematic diagram for boring measurement device embodiment;
Fig. 2 is the structural schematic diagram of drill bit;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural schematic diagram of measurement device;
Fig. 5 is the structural schematic diagram of pipe inner carrier formula sealing device;
Fig. 6 is the structural schematic diagram of double-wall drill pipe;
Fig. 7 in drilling process and measured for the present embodiment drilling ickings desorption of mash gas characteristic parameter with brill measurement device
What flow, Gas-Flow and water in journey took slag flows to schematic diagram.
Reference sign:
1 drill bit;1-1 deslagging apertures;1-2 cools down aperture;The outer picks of 1-3;Pick in 1-4;
2 measurement devices;2-1 strainers;2-2 connectors;2-3 measures circuit and storage installation cavity;2-4 power supply installation cavitys;2-5
Outer apertured;2-6 sealing rings;
3 outer tubes;
4 pipe inner carrier formula sealing devices;The front ends 4-1 outer tube;The front ends 4-2 connecting hole;4-3 connecting holes;4-4 positioning pins;4-5
Intermediate connection tube;The rear ends 4-6 outer tube;The rear ends 4-7 connecting hole;The rear ends 4-8- piston head;4-9 forward bolt piston heads;4-10 stop collars;
4-11 guide rods;4-12 resetting springs;4-13 connecting rods;4-14 sealing rings;The front ends 4-15 limiting plate;The rear ends 4-16 spacing ring;4-
17 fixing sleeves;4-18- sealing rings;4-19 spacing rings;
5 drill rod connectors;
6 double-wall drill pipes;6-1 double-wall drill pipe outer tubes;6-2 double-wall drill pipe inner tubes;6-3 expands connecting hole;
7 drilling packing devices;7-1 loop bar leading portions;7-2 loop bar back segments;7-3 expandable rubbers;7-4 seal protection rings;7-5
The prominent gap of expansion;
8 flow internal channels;
9 flow outer tunnels.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with
It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, showing with the structure for boring measurement device embodiment for present invention drilling ickings desorption of mash gas characteristic parameter
It is intended to.The drilling ickings desorption of mash gas characteristic parameter of the present embodiment is with brill measurement device, including double-wall drill pipe 6, outer tube 3 and drill bit
1, drill rod connector 5 is equipped between double-wall drill pipe 6 and outer tube 3, the front end of outer tube 3 is connected with drill bit 1.
Installation cavity is equipped between the outer tube 3 and drill bit 1 of the present embodiment, installation is equipped in measurement device 2 and pipe in installation cavity
Piston type sealing device 4, measurement device 2 are located at the front side of pipe inner carrier formula sealing device 4.
The front end surface of the drill bit 1 of the present embodiment is equipped with deslagging aperture 1-1, and the side wall of drill bit 1 is equipped with for dropping
The gap of cooling the aperture 1-2, deslagging aperture 1-1 of temperature and cooling aperture 1-2 between installation cavity and measurement device 2 is connected
It is logical.Annular is laid with pick 1-4, interior pick 1- in the outer circles of pick 1-3 and one of a circle on the front end face of the drill bit 1 of the present embodiment
4 are located within outer pick 1-3.Specifically, outer pick 1-3 annulars are uniformly set as 4, interior pick annular is uniformly set as 3.Deslagging
Aperture 1-1 is arranged within interior pick 1-4, and deslagging aperture 1-1 be set to it is at least one.The deslagging aperture of the present embodiment
1-1 is set to 2.
The outer diameter of the measurement device 2 of the present embodiment is less than the internal diameter of installation cavity, and the rear end of measurement device 2 is equipped with connector
2-2.Specifically, measurement device 2 includes the front housing and rear shell of airtight connection, sealing ring 2-6 is equipped between front housing and rear shell.Connection
Head 2-2 is arranged on the rear end face of rear shell, and measuring cell is equipped in connector 2-2, is equipped in rear shell and measures circuit and storage
Installation cavity 2-3, front housing is interior to be equipped with power supply installation cavity 2-4.Front housing is fixedly connected with drill bit 1, and is equipped with and is used in rear shell side body
It is connected to the outer apertured 2-5 in the gap between deslagging aperture 1-1 and installation cavity and measurement device 2.Measuring device can refer to open
Number be CN105241785A Chinese patent application, be not repeated.
The pipe inner carrier formula sealing device 4 of the present embodiment includes the piston outer tube that outer diameter is less than installation cavity internal diameter, outside piston
The front end of pipe is equipped with front end limiting plate 4-15, rear end is equipped with rear end spacing ring 4-16, front end limiting plate 4-15 and rear end spacing ring
Plunger shaft is formed between 4-16, and front end connecting hole 4-2 and rear end connecting hole 4-7 are respectively equipped on the both ends side wall of plunger shaft, and
Piston mechanism is equipped in plunger shaft;Piston mechanism closed rear end connecting hole 4-7 and opens front end connecting hole 4- in a free state
2;And piston mechanism, when being directed toward the axial force in 1 direction of drill bit by double-wall drill pipe 6, closed front connecting hole 4-2 is simultaneously opened
Rear end connecting hole 4-7.The front end of piston outer tube and connector 2-2 airtight connections, front end limiting plate 4-15 are equipped with for being connected to
The connecting hole 4-3 of measurement device 2 and plunger shaft, and strainer 2-1 is equipped between front end limiting plate 4-15 and connector 2-2.
The double-wall drill pipe 6 of the present embodiment includes double-wall drill pipe outer tube 6-1, and double-wall drill pipe outer tube 6-1 inner sleeves are installed with and it
The double-wall drill pipe inner tube 6-2 of clearance fit, and formed between expansion between double-wall drill pipe outer tube 6-1 and double-wall drill pipe inner tube 6-2
Gap;Double-wall drill pipe inner tube 6-2 passes through drill rod connector 5 and the rear end airtight connection with piston outer tube, and double-wall drill pipe inner tube 6-2
Sealing ring 4-14 is equipped between piston outer tube.Double-wall drill pipe outer tube 6-1 is fixedly connected with drill rod connector 5, the present embodiment
Clearance fit between double-wall drill pipe inner tube 6-2 and drill rod connector 5, it is of course also possible to connect in both arms drilling rod inner tube 6-2 and drilling rod
Sealing ring is set between connector 5.Double-wall drill pipe outer tube 6-1 housings are installed with drilling packing device 7.
Drilling packing device 7 includes being fixedly set in outer loop bar outside double-wall drill pipe outer tube 6-1, before outer loop bar includes loop bar
Section 7-1, loop bar back segment 7-2 and the inflatable sections between loop bar leading portion 7-1 and loop bar back segment 7-2, inflatable sections include set
Expandable rubber 7-3 outside double-wall drill pipe outer tube 6-1, the both ends of expandable rubber 7-3 are set with equipped with seal protection
The prominent gap 7-5 of expansion is equipped between ring 7-4, two seal protection ring 7-4, and double-wall drill pipe outer tube 6-1 is equipped with for connecting
The expansion connecting hole 6-3 of logical expandable rubber 7-3 and expansion clearance.
The rear end periphery wall of piston outer tube is equipped with the sealing ring 4-18 that extends radially outwardly, sealing ring 4-18 and installation cavity
Close fit between inner wall, and sealing ring 4-18 is located at rear sides of the rear end connecting hole 4-7 backwards to drill bit 1;Or double-wall drill pipe inner tube
The sealing structure for being located at the front ends expansion connecting hole 6-3 is equipped between 6-2 and both arms drilling rod outer tube 6-1;Or double-wall drill pipe inner tube 6-2
Sealing structure is equipped between drill rod connector 5;The technology mesh of sealing driving expandable rubber 7-3 dilatancies can be achieved
's.Between the double-wall drill pipe inner tube 6-2 and both arms drilling rod outer tube 6-1 of the present embodiment and double-wall drill pipe inner tube 6-2 connects with drilling rod
Equal clearance fit between connector 5, double-wall drill pipe inner tube 6-2 is interior to be equipped with through-hole and forms flow internal channel 8, in double-wall drill pipe inner tube
Flow outer tunnel 9 is formed between 6-2 and both arms drilling rod outer tube 6-1 and between double-wall drill pipe inner tube 6-2 and drill rod connector 5.
And the rear end periphery wall of piston outer tube is equipped with the sealing ring 4-18 to extend radially outwardly, sealing ring 4-18 and installation cavity
Inner wall between close fit, and sealing ring 4-18 is located at rear sides of the rear end connecting hole 4-7 backwards to drill bit 1.
Further, the piston outer tube of the present embodiment includes front end outer tube 4-1, intermediate connection tube 4-5 and rear end outer tube 4-6,
The both ends of intermediate connection tube 4-5 are fixedly connected with front end outer tube 4-1 and rear end outer tube 4-6 respectively;Front end limiting plate 4-15 is arranged
In the outer tube 4-1 of front end, rear end spacing ring 4-16 is arranged in the outer tube 4-6 of rear end, and front end outer tube 4-1 and connector 2-2 are closed
Connection.
Further, the piston mechanism of the present embodiment includes the fixing sleeve 4-17 being fixedly mounted in the middle part of plunger shaft, fixing sleeve
4-17 inner sleeves are installed with guide rod 4-11, and the stop collar for being equipped with and being sleeved on guide rod 4-11 is fixedly mounted in the front end of fixing sleeve 4-17
4-10, rear end are equipped with the spacing ring 4-19 extended radially inwardly, and the rear end of guide rod 4-11, which is equipped with to be slidably matched, is sleeved on spacing ring
Connecting rod 4-13 in 4-19, and resetting spring 4- of the suit between stop collar 4-10 and connecting rod 4-13 on guide rod 4-11
12;The front end that guide rod 4-11 stretches out stop collar 4-10 is fixedly mounted equipped with forward bolt piston head 4-9, connecting rod 4-13 stretching spacing rings
The rear end of 4-19, which is fixedly mounted, is equipped with rear end piston head 4-8, between front end connecting hole 4-2 and rear end spacing ring 4-16 it is axial away from
From the axial length more than piston mechanism, the axial distance between rear end connecting hole 4-7 and front end limiting plate 4-15 is more than piston
The axial length of mechanism.Positioning pin 4-4 is equipped between the intermediate connection tube 4-5 and fixing sleeve 4-17 of the present embodiment.
The present embodiment drilling ickings desorption of mash gas characteristic parameter with bore measurement device use process is as follows:
In drilling process, intake from double-wall drill pipe inner tube first, piston mechanism by the power towards drill bit direction, after
Connecting hole is held to open, front end connecting hole closing, flow enters the gap between piston outer tube and installation cavity from rear end connecting hole
In, and flowed out out of deslagging aperture and cooling aperture respectively, two bursts of flows each serve as the effect of deslagging and drill bit cooling;Flow
Take space discharge of the slag between drilling tool and drilling.
It when drill bit gets to specified measurement position, empties, cuts off the water, piston mechanism is in free state, i.e. rear end connecting hole
Closing, front end connecting hole are opened;A distance is then crept into, coal is stripped down from the coal wall of front, is moved back after boring certain distance,
In gap between double-wall drill pipe outer tube and double-wall drill pipe inner tube inject certain pressure water, due to the rear end of piston outer tube outside
Peripheral wall is equipped with the sealing ring with installation cavity close fit, and flow cannot be introduced into installation cavity at this time, the expanded connection of flow
Hole enters in expanded rubber, drives expanded rubber expanding distortion, deformed expanded rubber radial from the prominent gap location of expansion
It protrudes outward, seals up drilling, form one section of confined space Zi drilling bottom end at expanded rubber;In the confined space,
The gas of coal desorption to from drill bit, is entered through front end connecting hole and connecting hole in measurement device, measurement device from drilling bottom end
Measure the signal and record storage of the desorption of mash gas pressure of coal;After being measured, deslagging carries out next cycle, and so on,
The continuity for measuring work and work of drilling can be realized.
In summary, the drilling ickings desorption of mash gas characteristic parameter of the present embodiment can drill with measurement device is bored
Cheng Zhong does not remove brill and measures coal-bed gas parameter, improves the continuity for measuring work and work of drilling, and can effectively improve measurement
Precision.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art on the basis of the present invention made by equivalent substitute or transformation, in the present invention
Protection domain within.Protection scope of the present invention is subject to claims.
Claims (9)
1. a kind of drilling ickings desorption of mash gas characteristic parameter is with brill measurement device, it is characterised in that:Including double-wall drill pipe (6), outside
(3) and drill bit (1) are managed, drill rod connector (5), the outer tube (3) are equipped between the double-wall drill pipe (6) and the outer tube (3)
Front end be connected with the drill bit (1);
Installation cavity is equipped between the outer tube (3) and the drill bit (1), in the installation cavity installation equipped with measurement device (2) and
Pipe inner carrier formula sealing device (4), the measurement device (2) are located at the front side of the pipe inner carrier formula sealing device (4);
The outer diameter of the measurement device (2) is less than the internal diameter of the installation cavity, and the rear end of the measurement device (2) is equipped with connection
Head (2-2);
The pipe inner carrier formula sealing device (4) includes the piston outer tube that outer diameter is less than the installation cavity internal diameter, outside the piston
The front end of pipe be equipped with front end limiting plate (4-15), rear end be equipped with rear end spacing ring (4-16), the front end limiting plate (4-15) with
Plunger shaft is formed between rear end spacing ring (4-16), and front end connecting hole (4-2) is respectively equipped on the both ends side wall of the plunger shaft
With rear end connecting hole (4-7), and the plunger shaft in be equipped with piston mechanism;Described in the piston mechanism is closed in a free state
Rear end connecting hole (4-7) simultaneously opens the front end connecting hole (4-2);And the piston mechanism is by the double-wall drill pipe (6)
When being directed toward the axial force in the drill bit (1) direction, closes the front end connecting hole (4-2) and open the rear end connecting hole
(4-7);
The front end of the piston outer tube and the connector (2-2) airtight connection, and the front end limiting plate (4-15) is equipped with
Connecting hole (4-3) for being connected to the measurement device (2) and the plunger shaft;
The double-wall drill pipe (6) includes double-wall drill pipe outer tube (6-1), and inner sleeve is installed with and it for the double-wall drill pipe outer tube (6-1)
The double-wall drill pipe inner tube (6-2) of clearance fit, and between the double-wall drill pipe outer tube (6-1) and double-wall drill pipe inner tube (6-2)
Form expansion clearance;The double-wall drill pipe inner tube (6-2) pass through the drill rod connector (5) and with the rear end of the piston outer tube
Airtight connection, the double-wall drill pipe outer tube (6-1) are fixedly connected with the drill rod connector (5), the double-wall drill pipe outer tube (6-
1) housing is installed with drilling packing device (7);
The drilling packing device (7) includes being fixedly set in the outer loop bar of the double-wall drill pipe outer tube (6-1) outside, the housing
Bar includes loop bar leading portion (7-1), loop bar back segment (7-2) and between the loop bar leading portion (7-1) and loop bar back segment (7-2)
Inflatable sections, the inflatable sections include being sleeved on the expandable rubber (7-3) of the double-wall drill pipe outer tube (6-1) outside, described
The both ends of expandable rubber (7-3) are set with equipped with seal protection ring (7-4), between two seal protection rings (7-4)
Equipped with the prominent gap of expansion, and the double-wall drill pipe outer tube (6-1) is equipped with for being connected to the expandable rubber (7-3) and institute
State the expansion connecting hole (6-3) of expansion clearance;
The rear end periphery wall of the piston outer tube is equipped with the sealing ring (4-18) that extends radially outwardly, the sealing ring (4-18) with
Close fit between the inner wall of the installation cavity, and the sealing ring (4-18) is located at the rear end connecting hole (4-7) backwards to institute
State the rear side of drill bit (1);Or it is equipped between the double-wall drill pipe inner tube (6-2) and the both arms drilling rod outer tube and is located at the expansion
The sealing structure of the front end connecting hole (6-3);Or it is equipped between the double-wall drill pipe inner tube (6-2) and the drill rod connector (5)
Sealing structure;
The front end surface of the drill bit (1) is equipped with deslagging aperture (1-1), and the side wall of the drill bit (1) is equipped with for dropping
The cooling aperture (1-2) of temperature, the deslagging aperture (1-1) and cooling aperture (1-2) fill with the installation cavity and the measurement
The gap set between (2) is connected.
2. drilling ickings desorption of mash gas characteristic parameter according to claim 1 is with brill measurement device, it is characterised in that:It is described
Strainer (2-1) is equipped between front end limiting plate (4-15) and the connector (2-2).
3. drilling ickings desorption of mash gas characteristic parameter according to claim 1 is with brill measurement device, it is characterised in that:It is described
Annular is laid with pick (1-4) in the outer pick (1-3) of a circle and a circle, the interior pick (1-4) on the front end face of drill bit (1)
Within the outer pick (1-3).
4. drilling ickings desorption of mash gas characteristic parameter according to claim 3 is with brill measurement device, it is characterised in that:It is described
Deslagging aperture (1-1) be arranged within the interior pick (1-4), and the deslagging aperture (1-1) be set to it is at least one.
5. drilling ickings desorption of mash gas characteristic parameter according to claim 1 is with brill measurement device, it is characterised in that:It is described
Measurement device (2) includes the front housing and rear shell of airtight connection, and the connector (2-2) is arranged on the rear end face of shell in the rear,
And measuring cell is equipped in the connector (2-2), and it is equipped in the rear shell and measures circuit and storage installation cavity (2-3), it is described
Power supply installation cavity (2-4) is equipped in front housing.
6. drilling ickings desorption of mash gas characteristic parameter according to claim 5 is with brill measurement device, it is characterised in that:It is described
Front housing is fixedly connected with the drill bit (1), and is equipped in the rear shell side body for being connected to the deslagging aperture (1-1) and institute
State the outer apertured (2-5) in the gap between installation cavity and the measurement device (2).
7. drilling ickings desorption of mash gas characteristic parameter according to claim 1 is with brill measurement device, it is characterised in that:It is described
Piston outer tube includes front end outer tube (4-1), intermediate connection tube (4-5) and rear end outer tube (4-6), the intermediate connection tube (4-5)
Both ends be fixedly connected respectively with the front end outer tube (4-1) and rear end outer tube (4-6);Front end limiting plate (4-15) setting
In the front end outer tube (4-1), end outer tube (4-6) is interior in the rear for rear end spacing ring (4-16) setting, the front end
Outer tube (4-1) and the connector (2-2) airtight connection.
8. drilling ickings desorption of mash gas characteristic parameter with brill measurement device, feature according to claim 1-7 any one of them
It is:The piston mechanism includes the fixing sleeve (4-17) being fixedly mounted in the middle part of the plunger shaft, the fixing sleeve (4-17)
Inner sleeve is installed with guide rod (4-11), and the front end of the fixing sleeve (4-17) is fixedly mounted to be equipped with and is sleeved on the guide rod (4-11)
On stop collar (4-10), rear end be equipped with the spacing ring (4-19) that extends radially inwardly, the rear end of the guide rod (4-11) is equipped with
Be slidably matched the connecting rod (4-13) being sleeved in the spacing ring (4-19), and is set with positioned at described on the guide rod (4-11)
Resetting spring (4-12) between stop collar (4-10) and the connecting rod (4-13);The guide rod (4-11) stretches out the limit
The front end for covering (4-10) is fixedly mounted equipped with forward bolt piston head (4-9), and the connecting rod (4-13) stretches out the spacing ring (4-
19) rear end, which is fixedly mounted, is equipped with rear end piston head (4-8), the front end connecting hole (4-2) and the rear end spacing ring (4-
16) axial distance between is more than the axial length of the piston mechanism, and the rear end connecting hole (4-7) limits with the front end
Axial distance between plate (4-15) is more than the axial length of the piston mechanism.
9. drilling ickings desorption of mash gas characteristic parameter according to claim 8 is with brill measurement device, it is characterised in that:It is described
Positioning pin (4-4) is equipped between intermediate connection tube (4-5) and the fixing sleeve (4-17).
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| CN113266347A (en) * | 2021-07-05 | 2021-08-17 | 中煤科工集团重庆研究院有限公司 | Near-bit coal seam gas parameter while-drilling comprehensive measurement device and method |
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