Rapid hole sealing and sampling device for drill hole

Abstract

The utility model provides a quick hole sealing and sampling device for drill holes, which belongs to the technical field of coal mining and comprises a gas injection hollow tube and a sampling hollow tube, a hole sealing air compression valve is arranged at the front end of the gas injection hollow tube, and the rear end of the gas injection hollow tube is communicated with at least one plugging air bag; a sampling valve is arranged at the front end of the sampling hollow tube, the rear end of the sampling hollow tube penetrates through all the blocking air bags and then is communicated with a sampling floral tube, and an inner cavity of the sampling hollow tube is not communicated with inner cavities of the blocking air bags. When the device is used for sampling and detecting the state of the raw gas in the coal body or the rock body, the device not only has the characteristics of quick and convenient hole sealing, light weight, no gas leakage inside and outside a drill hole, convenient and quick sampling and the like, but also can be reused, so that the resource waste is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining, and in particular relates to a drilling fast sealing sampling device. Background Art

[0002] Coal is formed by plants buried underground, and gradually evolved over a long geological period and crustal movement, in the absence of air, and under the action of bacteria, pressure and temperature. In coal mines, there may be some harmful gases in the coal or rock mass, such as methane and carbon dioxide, which pose a risk of explosion, suffocation and poisoning to miners.

[0003] Therefore, before mining, it is necessary to detect the state of native gas in the coal or rock mass so that miners can detect the presence and concentration of harmful gases in advance and take corresponding safety measures in time. For example, when a high concentration of methane is detected in the coal seam, ventilation and fire extinguishing measures can be taken to prevent coal seam explosions. In addition, detecting and monitoring the gas state in coal mines can also help miners identify other safety hazards in coal mines, thereby reducing the occurrence of accidents.

[0004] However, in the prior art, when the existing coal mine sampling equipment and methods are used to sample and detect the state of native gas in coal or rock, it often has the following disadvantages: 1. Since it mostly adopts grouting sealing method, it cannot achieve rapid sealing action, which can easily cause inaccurate detection results; 2. The sampling tube used cannot be taken out for secondary use after the sampling is completed, so it is also easy to cause problems such as waste of resources and increased costs. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a reusable drilling fast sealing sampling device, which can not only quickly seal the hole after the drilling is completed, but also quickly sample the gas in the hole after the gas index in the hole meets the requirements and ensures that there is no gas leakage inside and outside the hole, thereby ensuring the accuracy of the detection result and reducing resource waste.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: a drilling rapid sealing sampling device, which includes an air injection hollow tube and a sampling hollow tube, the front end of the air injection hollow tube is provided with a sealing air pressure valve, and the rear end of the air injection hollow tube is connected to at least one blocking air bag; the front end of the sampling hollow tube is provided with a sampling valve, the rear end of the sampling hollow tube passes through all the blocking air bags and is connected to a sampling flower tube, and the inner cavity of the sampling hollow tube is not connected to the inner cavity of the blocking air bag. At this time, when the utility model is used to sample and detect the state of the original gas in the coal body or rock body, it can first use a drill to perform drilling processing, and after the drilling is completed, the utility model is first inserted into the borehole, and then the sealing hole pressure valve is opened, and the air injection hollow tube is connected to the on-site compressed air, so as to pressurize the compressed air into the plugging air bag, and after the plugging air bag is expanded, the plugging air bag can contact the hole wall and disconnect the connection between the inside and outside of the hole, and then the sealing hole pressure valve can be closed; after the gas index in the borehole meets the requirements, the staff can open the sampling valve and perform gas sampling processing to provide samples for subsequent detection and chromatographic microanalysis. Based on this, the utility model not only has the characteristics of fast and convenient sealing, light weight, no air leakage inside and outside the borehole, and convenient and fast sampling, but also can be reused, thereby reducing resource waste.

[0007] Furthermore, when the number of blocking airbags is at least two, any two adjacent blocking airbags are connected by a connecting hollow tube, the blocking airbag closest to the air injection hollow tube is connected to the air injection hollow tube, and the actual number of blocking airbags can be flexibly selected according to the sealing requirements and the drilling length.

[0008] Furthermore, the gas-injected hollow tube includes at least two hollow tube monomers 1, and two adjacent hollow tube monomers 1 are connected through a same-diameter tube connector or a blocking airbag, and the number of hollow tube monomers 1 can be flexibly selected according to the drilling length, thereby meeting a variety of usage scenarios.

[0009] Furthermore, the sampling hollow tube includes at least two hollow tube monomers 2, and two adjacent hollow tube monomers 2 are connected by a same-diameter tube connector, and the number of hollow tube monomers 2 can be flexibly selected according to the length of the drilling hole, thereby meeting a variety of usage scenarios.

[0010] Furthermore, the diameter of the sampling flower tube is the same as the diameter of the sampling hollow tube, and the inner diameters thereof are preferably 8 mm.

[0011] Furthermore, the sampling flower tube and the sampling hollow tube are connected via a same-diameter tube connector.

[0012] It can be seen from the above technical scheme that the utility model has the following advantages: when the utility model is used to sample and detect the original gas state in the coal body or rock body, it not only has the characteristics of fast and convenient sealing, light weight, no air leakage inside and outside the drilled hole, and convenient and fast sampling, but also can realize the reuse of the device, thereby reducing resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of a specific implementation method of the utility model.

[0015] In the figure: 1. Sealing hole air compression valve; 2. Sampling valve; 3. Same diameter pipe connector; 4. Sealing air bag; 5. Air injection hollow tube; 6. Sampling hollow tube; 7. Sampling flower tube. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figure 1 As shown, the utility model provides a drilling fast hole sealing sampling device, which includes a gas injection hollow tube 5 and a sampling hollow tube 6. Among them, the front end of the gas injection hollow tube 5 is provided with a sealing hole pressure valve 1, and the rear end of the gas injection hollow tube 5 is connected to at least one blocking air bag 4. The front end of the sampling hollow tube 6 is provided with a sampling valve 2, and the rear end of the sampling hollow tube 6 passes through all the blocking air bags 4 and is connected to the sampling flower tube 7 through the same diameter tube connector 3, and the inner cavity of the sampling hollow tube 6 is not connected with the inner cavity of the blocking air bag 4, and the inner diameter of the sampling hollow tube 6 is the same as the inner diameter of the sampling flower tube 7.

[0018] At this time, when the utility model is used to sample and detect the state of the original gas in the coal body or rock body, it can first use a drill to perform drilling processing. After the drilling is completed, the utility model is first inserted into the borehole, and then the sealing hole pressure valve 1 is opened, and the air injection hollow tube 5 is connected to the on-site compressed air, so that compressed air is pressed into the plugging airbag 4. After the plugging airbag 4 expands, the plugging airbag 4 can contact the hole wall and disconnect the connection between the inside and outside of the hole, and then the sealing hole pressure valve 1 can be closed; after the gas index in the borehole meets the requirements, the staff can open the sampling valve 2 to perform gas sampling processing to provide samples for subsequent detection and chromatographic microanalysis. Based on this, the utility model not only has the characteristics of fast and convenient sealing, light weight, no air leakage inside and outside the borehole, and convenient and fast sampling, but also can be reused, thereby reducing resource waste.

[0019] In addition, as a preference, the number of the plugging airbags 4 in the utility model can be one or more. Specifically, when the number of the plugging airbags 4 is at least two, any two adjacent plugging airbags are connected by connecting hollow tubes, and the plugging airbag 4 closest to the air injection hollow tube 5 is connected to the air injection hollow tube 5, and the actual number of the plugging airbags 4 can be flexibly selected according to the sealing requirements and the drilling length to meet a variety of usage scenarios.

[0020] Similarly, in order to meet a variety of usage scenarios, the gas injection hollow tube 5 and the sampling hollow tube 6 can also adopt a combined structure composed of multiple hollow tubes connected together. Specifically, the gas injection hollow tube 5 includes at least two hollow tube monomers one, and the two adjacent hollow tube monomers one are connected through a same-diameter tube connector 3 or a blocking airbag 4, and at this time, the number of hollow tube monomers one can be flexibly selected according to the length of the borehole, and the connecting hollow tube used to connect the two adjacent blocking airbags directly uses the hollow tube monomer one; the sampling hollow tube 6 includes at least two hollow tube monomers two, and the two adjacent hollow tube monomers two are connected through a same-diameter tube connector 3, and the number of hollow tube monomers two can be flexibly selected according to the length of the borehole, so that it can adapt to the length of the borehole.

[0021] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0022] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drilling rapid sealing sampling device, characterized in that: The invention comprises an air injection hollow tube (5) and a sampling hollow tube (6); the front end of the air injection hollow tube (5) is provided with a sealing air pressure valve (1); the rear end of the air injection hollow tube (5) is connected to at least one blocking air bag (4); the front end of the sampling hollow tube (6) is provided with a sampling valve (2); the rear end of the sampling hollow tube (6) passes through all the blocking air bags (4) and is connected to a sampling flower tube (7); and the inner cavity of the sampling hollow tube (6) is not connected to the inner cavity of the blocking air bag (4).

2. The drilling rapid sealing sampling device according to claim 1 is characterized in that: When the number of the blocking airbags (4) is at least two, any two adjacent blocking airbags (4) are connected via a connecting hollow tube, and the blocking airbag (4) closest to the air injection hollow tube (5) is connected to the air injection hollow tube (5).

3. The drilling rapid sealing sampling device according to claim 1 is characterized in that: The gas-injected hollow tube (5) comprises at least two hollow tube monomers 1, and two adjacent hollow tube monomers 1 are connected via a same-diameter tube connector (3) or a blocking air bag (4).

4. The drilling rapid sealing sampling device according to claim 1 is characterized in that: The sampling hollow tube (6) comprises at least two hollow tube monomers 2, and two adjacent hollow tube monomers 2 are connected via a same-diameter tube connector (3).

5. The drilling rapid sealing sampling device according to claim 1 is characterized in that: The diameter of the sampling flower tube (7) is the same as the diameter of the sampling hollow tube (6).

6. The drilling rapid sealing sampling device according to claim 1, characterized in that: The sampling flower tube (7) and the sampling hollow tube (6) are connected via a same-diameter tube connector (3).

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