CN114458382A - Coal seam gas pressure and concentration integrated detection device - Google Patents

Abstract

The invention relates to the technical field of gas detection, in particular to an integrated detection device for coal seam gas pressure and concentration, which has a built-in gas pressure detection module, a gas concentration detection module and a capsule drive control module. A plurality of inflation balloons are arranged, an inner casing is fixedly arranged on the inner periphery of the outer casing, and a gas pressure conduit and a gas concentration conduit are arranged on the inner periphery of the inner casing. The gas pressure conduit is connected with the detection pipeline of the gas pressure detection module; the gas concentration conduit is connected with the detection pipeline of the gas concentration detection module. The expansion bag body includes an outer bag, the inner periphery of the outer bag is connected with a set of fixed frames, and the inner periphery of the set of fixed frames is jointly connected with an inner soft ring. The present invention reduces detection interference by arranging a gas pressure detection module and a gas concentration detection module at the detection terminal, and adopts dual independent pipes to perform independent gas pressure and gas concentration detection, and can be quickly disassembled and reused.

Description

An integrated detection device for coal seam gas pressure and concentration

technical field

The invention relates to the technical field of gas detection, in particular to an integrated detection device for coal seam gas pressure and concentration.

Background technique

With the increase of coal mining depth, the prevention and control of gas disaster accidents has become the top priority in coal mine safety work. Before mining a new coal seam, it is necessary to detect the gas pressure and gas concentration of the coal seam.

In the existing coal seam gas detection technology, the gas concentration and gas pressure are generally drilled separately, and separate test results are installed. There are some problems. First, it increases the number of testing equipment, which is more complicated to manage. Second, it is necessary to plug the opening with a wooden wedge and inject mud during testing, which makes it difficult to re-use the testing tube inserted into the coal seam. Gas detection at many locations requires a large number of detection tubes, and recycling and transporting these detection tubes to the ground also consumes a lot of manpower and material resources.

SUMMARY OF THE INVENTION

Aiming at the related technical problems brought about by the current situation of separate measurement of gas concentration and gas pressure, the present invention provides an integrated detection device for coal seam gas pressure and concentration, which can quickly complete the hydraulic sealing support during gas detection and installation in the coal seam. And after no inspection, it can be quickly disassembled and reused.

For achieving the above object, the technical scheme adopted in the present invention is:

An integrated detection device for coal seam gas pressure and concentration, with a built-in gas pressure detection module, a gas concentration detection module and a bladder drive control module, an outer casing is fixedly arranged on one side, a plurality of expansion bladders are arranged on the outer casing, and the inner circumference of the outer casing is An inner sleeve is fixed, and several sets of partition ring plates are fixed between the outer sleeve and the inner sleeve, a diversion cavity is formed between each group of partition ring plates, and a set of partition ring plates on the non-tail end side is provided with a guide. The flow port, the bladder drive control module is equipped with a hydraulic storage box, and the outer connecting pipe of the hydraulic storage box is connected with the flow guide port on the head end side;

The inner casing is equipped with a gas pressure conduit and a gas concentration conduit, the gas pressure conduit is connected with the detection pipeline of the gas pressure detection module, and the gas concentration conduit is connected with the detection pipeline of the gas concentration detection module;

The expansion bag body includes an outer bag, the inner periphery of the outer bag is connected with a set of fixed frames, and the inner periphery of a set of fixed frames is jointly connected with an inner soft ring; the fixed frame is provided with a diversion inlet pipe and a diversion outlet pipe, which are installed together. In the diversion port on the partition ring plate.

As a preferred technical solution, the outer sleeve is divided into a multi-segment structure, and the inflation balloon is installed in the groove body in the middle of the adjacent outer sleeves.

As a preferred technical solution, the diversion inlet pipe and the diversion outlet pipe are provided with a sealing ring structure matched with the diversion port.

As a preferred technical solution, the outer sleeve, the inner sleeve and the partition ring plate form a clamping groove structure, and the fixed frame is installed in the clamping groove structure by clamping or bonding.

As a preferred technical solution, the outer casing is sleeved with an external positioning disc, a section of adjusting thread is provided on the side of the outer ring of the outer casing, and the adjusting thread section of the outer casing is provided with a reinforcing nut for limiting the position of the external positioning disc.

As a preferred technical solution, the external positioning disc adopts a square disc or a circular disc structure, and a through groove structure matched with the radial size of the outer sleeve is opened in the middle position of the external positioning disc.

The present invention has the following technical effects:

1. By setting up a gas pressure detection module and a gas concentration detection module at the detection terminal, and using dual independent pipes for independent gas pressure and gas concentration detection, the detection interference is reduced;

2. An expansion bladder and an external positioning disc are arranged on the outer casing. When the gas detection and installation in the coal seam is carried out, the hydraulic sealing support can be quickly completed, and it can be quickly disassembled and reused after no detection is required.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only for the present invention. For some examples, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Figure 1 is a schematic diagram of the structure of an integrated detection device for coal seam gas pressure and concentration (inflated balloon body);

Fig. 2 is the partial enlarged structural schematic diagram of A place in Fig. 1;

3 is a schematic structural diagram of an inflation bladder in an integrated detection device for coal seam gas pressure and concentration;

Figure 4 is a schematic diagram of the structure of the integrated detection device for coal seam gas pressure and concentration (inflated balloon body shrinking state);

Fig. 5 is the appearance schematic diagram of coal seam gas pressure and concentration integrated detection device;

In the figure: 1-detection terminal; 2-outer casing; 3-inner casing; 4-gas pressure conduit; 5-gas concentration conduit; 6-expansion balloon; 7-external positioning plate; 8-reinforcing nut; 101- Gas pressure detection module; 102-Gas concentration detection module; 103-Capsule drive control module; 104-Outside handle; 201-Partition ring plate; Outer bag; 602 - fixed frame; 603 - inner soft ring; 604 - diversion inlet tube; 605 - diversion outlet tube.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to make it easy to understand the technical means, creation features, achieved goals and effects of the present invention, the present invention will be further described below with reference to the specific embodiments.

Example 1:

The detection terminal 1 of the coal seam gas pressure and concentration integrated detection device is provided with a gas pressure detection module 101 , a gas concentration detection module 102 and a capsule drive control module 103 . An outer sleeve 2 is fixedly connected to the detection terminal 1 , and the outer sleeve 2 is divided into a multi-section structure.

An inner sleeve 3 is fixedly arranged on the inner periphery of the outer sleeve 2, and several sets of partition ring plates 201 are fixed between the outer sleeve 2 and the inner sleeve 3, and a diversion cavity 202 is formed between each group of partition ring plates 201, and the non-tail end A set of partition ring plates 201 on the side are provided with diversion openings 203, the bladder drive control module 103 is configured with a hydraulic storage box, and the outer connecting pipe of the hydraulic storage box is connected to the diversion opening 203 on the head end side.

The inner casing 3 is provided with a gas pressure conduit 4, a gas concentration conduit 5, a gas pressure conduit 4, which is connected to the detection pipeline of the gas pressure detection module 101, and a gas concentration conduit 5, which is connected to the detection pipeline of the gas concentration detection module 102.

The inflation bag 6 includes an outer bag 601 , a set of fixed frames 602 are connected to the inner periphery of the outer bag 601 , and an inner soft ring 603 is connected to the inner periphery of the set of fixed frames 602 . The outer sleeve 2 , the inner sleeve 3 and the partition ring plate 201 form a slot structure, and the fixed frame 602 is installed in the slot structure by snap fit or adhesion. The fixed frame 602 is provided with a guide inlet pipe 604 and a guide outlet pipe 605 , and the guide inlet pipe 604 and the guide outlet pipe 605 are installed in the guide port 203 on the partition ring plate 201 . The diversion inlet pipe 604 and the diversion outlet pipe 605 are provided with a sealing ring structure matched with the diversion port 203 .

An external positioning plate 7 is sleeved on the outer sleeve 2 , a section of adjustment thread 204 is provided on the side of the outer ring of the outer sleeve 2 , and a reinforcement nut 8 for limiting the position of the outer positioning plate 7 is arranged on the adjustment thread 204 of the outer sleeve 2 . The outer positioning plate 7 adopts the structure of a square plate or a circular plate, and a through groove structure matched with the radial dimension of the outer sleeve 2 is provided in the middle position of the outer positioning plate 7 .

Embodiment 2

The coal seam gas pressure and concentration integrated detection device is used for detection. First, the coal seam to be sampled is drilled, and the outer casing 2 with the inflated balloon body 6 in the contracted state is inserted into the drilled hole. After being inserted in place, the bladder drive control module 103 is activated to hydraulically supplement the expansion bladders 6 in the contracted state. Under the action of hydraulic pressure, the expansion bladders 6 in the contracted state start to expand and adapt to the deformation of the borehole wall at their respective positions. Press contact, form multi-channel sealing and support in the drilling channel, then move the outer positioning plate 7 to the outer base surface of the drilling position, and use the reinforcement nut 8 to reinforce the outer positioning plate 7, so that the entire detection device is It is installed at the location of gas detection, and starts to detect gas pressure and concentration of the internal coal seam.

When gas detection is not required, the bladder drive control module 103 directly releases the hydraulic driving force and performs a certain degree of hydraulic return, and the expansion bladder 6 becomes retracted, which is convenient for directly pulling out the outer casing 2 from the borehole. Can be reused.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and range of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. A coal bed gas pressure and concentration integrated detection device is internally provided with a gas pressure detection module, a gas concentration detection module and a capsule body driving and controlling module, wherein an outer sleeve is fixedly arranged on one side, a plurality of expansion capsule bodies are arranged on the outer sleeve, an inner sleeve is fixedly arranged on the inner periphery of the outer sleeve, a plurality of groups of partition ring plates are fixedly arranged between the outer sleeve and the inner sleeve, a flow guide cavity is formed between each group of partition ring plates, a group of partition ring plates on the non-tail end side is provided with a flow guide port, the capsule body driving and controlling module is provided with a hydraulic storage box, and an external connecting pipe of the hydraulic storage box is connected with the flow guide port on the head end side;

a gas pressure conduit and a gas concentration conduit are arranged on the inner periphery of the inner sleeve, the gas pressure conduit is connected with a detection pipeline of a gas pressure detection module, and the gas concentration conduit is connected with a detection pipeline of the gas concentration detection module;

the expansion bag body comprises an outer bag, the inner periphery of the outer bag is connected with a group of fixed frames, and the inner peripheries of the fixed frames are connected with an inner soft ring together; a diversion inlet pipe and a diversion outlet pipe are arranged on the fixed frame and are matched with the diversion port on the partition ring plate.

2. The integrated detection device according to claim 1, wherein the outer sleeve is divided into a plurality of sections, and the inflatable balloon is mounted in a groove body between adjacent sections of the outer sleeve.

3. The integrated detection device according to claim 1 or 2, wherein the outer sleeve, the inner sleeve and the partition ring plate form a slot structure, and the fixing frame is mounted in the slot structure in a clamping or bonding manner.

4. The integrated detection device according to claim 1 or 2, wherein the outer sleeve is sleeved with an external positioning disk, the outer ring side surface of the outer sleeve is provided with a section of adjusting thread, and the adjusting thread section of the outer sleeve is provided with a reinforcing nut for limiting the external positioning disk.

5. The integrated detecting device of claim 4, wherein the outer positioning plate is a square plate or a circular plate, and a through groove structure matched with the radial dimension of the outer sleeve is formed in the middle of the outer positioning plate.

6. The integrated detecting device of claim 1, wherein the diversion inlet pipe and the diversion outlet pipe are provided with sealing ring structures matched with the diversion port.

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