CN202735120U - Positive and negative pressure combined plug flow fixed-point sampling device - Google Patents

Positive and negative pressure combined plug flow fixed-point sampling device Download PDF

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Publication number
CN202735120U
CN202735120U CN 201220406272 CN201220406272U CN202735120U CN 202735120 U CN202735120 U CN 202735120U CN 201220406272 CN201220406272 CN 201220406272 CN 201220406272 U CN201220406272 U CN 201220406272U CN 202735120 U CN202735120 U CN 202735120U
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CN
China
Prior art keywords
double
interface
wall
channel
drill pipe
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Expired - Fee Related
Application number
CN 201220406272
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Chinese (zh)
Inventor
胡千庭
文光才
隆清明
王艺树
康建宁
刘胜
李秋林
吴教锟
吕贵春
马代辉
张淑同
刘志伟
黄长国
李建功
张睿
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CCTEG Chongqing Research Institute Co Ltd
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CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RESEARCH INSTITUTE
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Priority to CN 201220406272 priority Critical patent/CN202735120U/en
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Publication of CN202735120U publication Critical patent/CN202735120U/en
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Abstract

The utility model discloses a positive and negative pressure combined plug flow fixed-point sampling device, which includes a double-wall drill rod, a drill bit, a four-way connector, a three-way connector, a negative pressure generator, a gas-solid gravity separator and a sample collection tank, as well as an annular nozzle ejector disposed in the drill bit. The rear end of the double-wall drill rod is sleeved with a two-channel faucet on the outside. The first channel of the two-channel faucet is connected to a first interface of the four-way connector, and the second channel of the two-channel faucet is connected to a first interface of the three-way connector. The second interface of the four-way connector is communicated with the second interface of the three-way connector. The third interface of the four-way connector is connected to the first air inlet of the negative pressure generator. During sampling, a material plug with a section of a sample and a section of compressed air is formed in a double-wall drill rod in-inner wall channel, and has small motion resistance in the double-wall drill rod in-inner wall channel. Driven by a negative pressure, the sample moves fast, and the sampling work is high efficient. No plugging or drilling is needed in a sampling process, and the process is simple. Sampling can be performed at any drilling point, thus realizing fixed-point sampling.

Description

Positive/negative-pressure associating bolt stream device for fixed point sampling
Technical field
The utility model relates to a kind of coal seam sampler, particularly a kind of rapid sampling attachment of deep hole coal samples.
Background technology
At present for replenishing, the Fast Measurement technology of regional gas parameter becomes urgent problem to the coal-mine gas hazard management, thereby the deep hole sampling is the matter of utmost importance that needs solution take regional control as main, local measure.The sampling mode of deep layer gas mainly contains at present: basket sampling, spiral drill inlet hole mouth connect coal dust, press wind injection sampling etc., all there is long and the problem that can not spot sampling of complex process, sample time in these sampling methods, seriously hinder the production of seam mining and renderd a service, restricted the development of yield-power.
The utility model content
In view of this, the purpose of this utility model provides a kind of positive/negative-pressure associating bolt stream device for fixed point sampling, can take a sample fast and accurately, simplifies simultaneously technique, and is simple to operate; Concrete technical scheme of the present utility model is:
The utility model positive/negative-pressure associating bolt stream device for fixed point sampling, comprise double-wall drill pipe, be arranged on the drill bit of double-wall drill pipe front end, four-way connection, three-way connection, vacuum generator, gas-solid gravity separator and sample collection tank, the outer wall of drill bit and double-wall drill pipe is fixedly connected with, be provided with the annular nozzle thrower that is fixedly connected with the double-wall drill pipe inwall in the described drill bit, the ejection end of described annular nozzle thrower is provided with introduces annular nozzle thrower internal channel with the outer sidewind of annular nozzle thrower, and make air-flow from the air flue of annular nozzle thrower internal channel outlet side ejection;
The rear end overcoat of described double-wall drill pipe has the binary channels tap that is rotatably assorted with its single-degree-of-freedom, channel connection between the first passage of described binary channels tap and the double-wall drill pipe inner and outer wall, and the first passage of binary channels tap links to each other with the first interface of four-way connection by the first pressurized air transfer valve, the second channel of described binary channels tap is communicated with double-wall drill pipe inwall interior conduit, and the second channel of described binary channels tap is connected first interface and is connected with three-way connection;
The second interface of described four-way connection is communicated with by the second interface of the second pressurized air transfer valve and three-way connection;
The 3rd interface of described four-way connection is connected the first air intake opening by the 3rd pressurized air transfer valve and is connected with vacuum generator;
The 3rd interface of described three-way connection is connected with sample conveying tube by the 4th pressurized air transfer valve, described sample conveying tube is connected charging aperture and is connected with the gas-solid gravity separator, the solid material outlet of gas-solid gravity separator connects with the sample holding tank, and the gas vent of gas-solid gravity separator connects with the second air intake opening of vacuum generator.
Further, described vacuum generator is multistage multiple nozzle spraying device or vacuum pump;
Further, the entrance point of described annular nozzle thrower is provided with double-deck anti-blocking device for suction material, and the charging aperture of the anti-blocking device for suction material of described bilayer is angular cut.
The beneficial effects of the utility model: the utility model positive/negative-pressure associating bolt stream device for fixed point sampling, in the drill bit drilling process, in two passages of double-wall drill pipe, pass into simultaneously pressurized air by control pressurized air transfer valve, dust can be removed from drilling rod outside interstitial row, guarantee to creep into smoothly; In sampling process, again by control pressurized air transfer valve, make the inwall interior conduit of double-wall drill pipe be in negative pressure state, and make the pipeline between the double-wall drill pipe inner and outer wall of entering of pressurized air discontinuity, under the effect of annular nozzle thrower, form a joint sample, the compressed-air actuated material bolt of a joint in the double-wall drill pipe inwall internal channel, the resistance of motion of material bolt in double-wall drill pipe inwall internal channel is less, the sample translational speed is very fast under negative pressure drives, sample is split in the sample collection tank under the effect of gas-solid gravity separator, the sampling high efficiency; Do not need shutoff boring in the sampling process, technique is simple; Can creeping into arbitrarily a sampling, realize spot sampling.
Description of drawings
Fig. 1 is the structural representation of the utility model positive/negative-pressure associating bolt stream device for fixed point sampling;
Fig. 2 is the zoomed-in view of P section among Fig. 1.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Such as Fig. 1, shown in 2, the present embodiment positive/negative-pressure associating bolt stream device for fixed point sampling, comprise double-wall drill pipe 1, be arranged on the drill bit 2 of double-wall drill pipe 1 front end, four-way connection 3, three-way connection 4, vacuum generator 5, gas-solid gravity separator 6 and sample collection tank 7, the outer wall of drill bit 2 and double-wall drill pipe is fixedly connected with, be provided with the annular nozzle thrower 8 that is fixedly connected with the double-wall drill pipe inwall in the described drill bit 2, the ejection end of described annular nozzle thrower 8 is provided with introduces annular nozzle thrower internal channel with the outer sidewind of annular nozzle thrower, and make air-flow from the air flue 8a of annular nozzle thrower internal channel outlet side ejection;
The rear end overcoat of described double-wall drill pipe 1 has the binary channels tap 9 that is rotatably assorted with its single-degree-of-freedom, the first passage of described binary channels tap 9 is communicated with passage 1a between the double-wall drill pipe inner and outer wall, and the first passage of binary channels tap 9 links to each other with the first interface of four-way connection 3 by the first pressurized air transfer valve 10, the second channel of described binary channels tap 9 is communicated with double-wall drill pipe inwall interior conduit 1b, and the first interface that the second channel of described binary channels tap 9 is connected with three-way connection connects;
The second interface of described four-way connection 3 is communicated with by the second interface of the second pressurized air transfer valve 11 and three-way connection 4;
The first air intake opening that the 3rd interface of described four-way connection 3 is connected with vacuum generator by the 3rd pressurized air transfer valve 12 connects;
The 3rd interface of described three-way connection 4 is connected connection by the 4th pressurized air transfer valve 13 with sample conveying tube, the charging aperture that described sample conveying tube 14 is connected with the gas-solid gravity separator connects, the solid material outlet of gas-solid gravity separator 6 connects with sample holding tank 7, and the gas vent of gas-solid gravity separator 6 connects with the second air intake opening of vacuum generator 5.
The principle of work of this positive/negative-pressure associating bolt stream device for fixed point sampling is:
In drilling process, the first pressurized air transfer valve 10 and the second pressurized air transfer valve 11 are opened, and the 3rd pressurized air transfer valve 12 and the 4th pressurized air transfer valve 13 closed, pressurized air enters two passages of double-wall drill pipe simultaneously, drill bit being crept into the powder of generation discharges from the gap between drilling rod and coal seam, guarantee that drilling rod creeps into smoothly, and dust can not enter in the double-wall drill pipe inwall internal channel, can guarantee the degree of purity of taking a sample.
When drill bit 2 creeps into the sample position, the first pressurized air transfer valve 10, the 3rd pressurized air transfer valve 12 and the 4th pressurized air transfer valve 13 are opened, and the second pressurized air transfer valve 11 cuts out, pressurized air enters respectively passage 1a and the vacuum generator 5 between double-wall drill pipe 1 inner and outer wall, under the effect of vacuum generator 5, double-wall drill pipe 1 inwall internal channel 1b is in negative pressure state; Drive the first pressurized air transfer valve 10 by the pass of discontinuity during sampling, what make pressurized air discontinuity enters drill bit 2, sample enters annular nozzle thrower 8 under negative pressure drives, the pressurized air of discontinuity enters in the annular nozzle thrower 8 by air flue 8a and material is separated into a joint sample, the compressed-air actuated material bolt state of a joint, because pressurized air stream is lower to the ejection of annular nozzle thrower 8 internal channel outlet sides, so sample can not blow out from the drill bit direction by compressed air; Because the material resistance of motion of bolt in double-wall drill pipe 1 inwall internal channel is less, the sample translational speed is very fast under negative pressure drives, and sample can enter gas-solid gravity separator 6, and the separated sample collection tank 7 that enters, sampling high efficiency fast.And sample can not blow out from gap between drilling rod and coal seam by compressed air in sampling process, so sampling process do not need shutoff boring, and technique is simple; This sampler can creeping into arbitrarily a sampling, have been realized spot sampling.
In the present embodiment, described vacuum generator 5 is multistage multiple nozzle spraying device, and pressurized air is sprayed at a high speed, thereby forms high negative pressure in double-wall drill pipe inwall internal channel 1b, guarantees material bolt fast moving.Certainly in different embodiments, described vacuum generator 5 also can be other devices such as vacuum pump.
As the improvement to the present embodiment, the entrance point of described annular nozzle thrower 8 is provided with double-deck anti-blocking device for suction material 15, the charging aperture of the anti-blocking device for suction material 15 of described bilayer is angular cut, under the effect of pressurized air stream, material can not go out to stop up at angular cut, guarantees stable work of sampler.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims (3)

1. a positive/negative-pressure associating bolt flows device for fixed point sampling, it is characterized in that: comprise double-wall drill pipe, be arranged on the drill bit of double-wall drill pipe front end, four-way connection, three-way connection, vacuum generator, gas-solid gravity separator and sample collection tank, the outer wall of drill bit and double-wall drill pipe is fixedly connected with, be provided with the annular nozzle thrower that is fixedly connected with the double-wall drill pipe inwall in the described drill bit, the ejection end of described annular nozzle thrower is provided with introduces annular nozzle thrower internal channel with the outer sidewind of annular nozzle thrower, and make air-flow from the air flue of annular nozzle thrower internal channel outlet side ejection;
The rear end overcoat of described double-wall drill pipe has the binary channels tap that is rotatably assorted with its single-degree-of-freedom, channel connection between the first passage of described binary channels tap and the double-wall drill pipe inner and outer wall, and the first passage of binary channels tap links to each other with the first interface of four-way connection by the first pressurized air transfer valve, the second channel of described binary channels tap is communicated with double-wall drill pipe inwall interior conduit, and the second channel of described binary channels tap is connected first interface and is connected with three-way connection;
The second interface of described four-way connection is communicated with by the second interface of the second pressurized air transfer valve and three-way connection;
The 3rd interface of described four-way connection is connected the first air intake opening by the 3rd pressurized air transfer valve and is connected with vacuum generator;
The 3rd interface of described three-way connection is connected with sample conveying tube by the 4th pressurized air transfer valve, described sample conveying tube is connected charging aperture and is connected with the gas-solid gravity separator, the solid material outlet of gas-solid gravity separator connects with the sample holding tank, and the gas vent of gas-solid gravity separator connects with the second air intake opening of vacuum generator.
2. positive/negative-pressure associating bolt according to claim 1 flows device for fixed point sampling, and it is characterized in that: described vacuum generator is multistage multiple nozzle spraying device or vacuum pump.
3. positive/negative-pressure associating bolt according to claim 1 and 2 flows device for fixed point sampling, and it is characterized in that: the entrance point of described annular nozzle thrower is provided with double-deck anti-blocking device for suction material, and the charging aperture of the anti-blocking device for suction material of described bilayer is angular cut.
CN 201220406272 2012-08-16 2012-08-16 Positive and negative pressure combined plug flow fixed-point sampling device Expired - Fee Related CN202735120U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102798548A (en) * 2012-08-16 2012-11-28 中煤科工集团重庆研究院 Positive and negative pressure combined plug flow fixed-point sampling device
CN103993847A (en) * 2014-06-09 2014-08-20 中煤科工集团重庆研究院有限公司 Two-channel multi-stage spray sampling tail braid
CN114216726A (en) * 2021-12-28 2022-03-22 平顶山天安煤业股份有限公司 Mining negative pressure fixed point sampling system
CN114592905A (en) * 2022-04-27 2022-06-07 中国矿业大学 Low-negative-pressure ejection deep hole continuous sampling system and sampling method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102798548A (en) * 2012-08-16 2012-11-28 中煤科工集团重庆研究院 Positive and negative pressure combined plug flow fixed-point sampling device
CN103993847A (en) * 2014-06-09 2014-08-20 中煤科工集团重庆研究院有限公司 Two-channel multi-stage spray sampling tail braid
CN103993847B (en) * 2014-06-09 2016-06-08 中煤科工集团重庆研究院有限公司 Two channels multi-stage jet sampling tail pigtail
CN114216726A (en) * 2021-12-28 2022-03-22 平顶山天安煤业股份有限公司 Mining negative pressure fixed point sampling system
CN114216726B (en) * 2021-12-28 2023-09-19 平顶山天安煤业股份有限公司 Mining negative pressure fixed-point sampling system
CN114592905A (en) * 2022-04-27 2022-06-07 中国矿业大学 Low-negative-pressure ejection deep hole continuous sampling system and sampling method
CN114592905B (en) * 2022-04-27 2022-12-30 中国矿业大学 Low-negative-pressure ejection deep hole continuous sampling system and sampling method

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: CHINA COAL TECHNOLOGY ENGINEERING GROUP CHONGQING

Free format text: FORMER NAME: CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RESEARCH INSTITUTE

CP01 Change in the name or title of a patent holder

Address after: 400039 Chongqing Jiulongpo Erlang Branch City Road No. 6

Patentee after: China Coal Technology Engineering Group Chongqing Research Institute

Address before: 400039 Chongqing Jiulongpo Erlang Branch City Road No. 6

Patentee before: China Coal Science and Industry Group Chongqing Research Institute

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130213

Termination date: 20160816