A kind of automatic detection device of underground gas and detection method using the same

Abstract

The present invention relates to the technical field of underground operation installation detection equipment, and in particular to an underground gas automatic detection device and a detection method for its application, which specifically comprises: installing a gas detection module on a release frame, releasing the release frame to a predetermined position in a detection well by a lifting mechanism, and collecting detection data of the gas detection module on the original underground gas; when the gas detection module recognizes a low flow rate for the underground gas detection, the gas source can be started, so that a driving mechanism drives a fan to work, and the air flow rate is formed by using the underground original gas, and the size of the gas source can be adjusted to control the flow rate; the sampling mechanism can enter a sampling working state by starting a driving motor, and the real sampling is completed and stored in a sampling bag; the technical solution does not use forced ventilation to interfere with the underground original gas, but indirectly uses a pure mechanical power fan to provide power, and can also effectively complete the sampling through the sampling mechanism, which is safer.

Description

Technical Field

[0001] The present invention relates to the technical field of underground operation installation detection equipment, and in particular to an underground gas automatic detection device and a detection method using the same. Background Art

[0002] At present, underground operations belong to limited space operations. The harm of underground harmful gases to the human body during underground operations is mainly reflected in the following aspects: the first aspect is carbon monoxide. Carbon monoxide is the most common harmful gas in mines. It will combine with hemoglobin, prevent blood from carrying oxygen, and cause hypoxia in the human body;

[0003] The second aspect is nitrogen. Nitrogen can cause suffocation and death at a certain concentration, and it is easy to be ignored. However, underground harmful gas monitoring in the existing technology is an important means to prevent mine accidents. Through real-time monitoring of underground harmful gases, it is possible to timely detect the excessive harmful gas situation and take corresponding measures to prevent accidents.

[0004] However, in the current method, the real-time monitoring is generally configured for large mines, while the detection of newly opened and newly drilled underground spaces is mainly carried out by hoisting and lowering existing detection equipment at the newly opened wellhead. Natural ventilation is mainly used for underground treatment. However, since newly opened underground mines may involve the destruction of different rock formations, harmful gases are gradually produced. If forced ventilation is used, there is a risk of mixing harmful gases and air, making the composition of underground gases more complicated, making real-time monitoring and sampling detection difficult, and instead creating safety hazards. Summary of the invention

[0005] The present invention aims to solve the technical problem in the prior art that real-time monitoring and sampling detection of underground gas in newly opened wells lacks safe and reliable detection implementation and methods, and provides an underground gas automatic detection device and a detection method using the same.

[0006] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0007] An automatic downhole gas detection device, comprising:

[0008] A release frame is released into the detection well by a lifting mechanism erected on the detection well;

[0009] A plurality of gas detection modules are integrated and installed on the release frame;

[0010] The gas detection module is used to detect various gases in the well;

[0011] The release frame is composed of an annular hollow structure, into which guided air can enter through an inlet, and the guided air is discharged through an outlet of the annular hollow structure;

[0012] The guided air can pass through a driving component, and the driving component can drive a fan to rotate, so that the fan guides the underground gas toward the upper well; and

[0013] a sampling mechanism, which is integrated on the release frame and arranged above the fan;

[0014] The sampling mechanism includes a multi-action cylinder group, which is driven by the rotational driving action of a driving motor so that each driving cylinder of the multi-action cylinder group acts in a staggered manner to transport the downhole gas into the sampling bag through a sampling tube.

[0015] Specifically, the gas detection module includes: an oxygen concentration detection module, a carbon monoxide concentration detection module, a carbon dioxide concentration detection module and a nitric oxide gas concentration detection module.

[0016] Specifically, the release framework includes:

[0017] A plurality of ring frames are arranged longitudinally;

[0018] Each of the annular frames comprises four groups of node cavities, and adjacent node cavities are connected by arc-shaped curved pipes;

[0019] The upper and lower adjacent node cavities are connected via a connecting pipe.

[0020] Specifically, the plurality of annular frames include a top frame;

[0021] The top frame includes a top node cavity;

[0022] Wherein, one top node cavity is connected to the inlet, and another top node cavity is connected to the outlet;

[0023] The inlet and the outlet are respectively connected to the outside of the detection well through a connecting hose;

[0024] Wherein, the connecting hose connected to the inlet is connected to the gas source, and the other connecting hose connected to the outlet is connected to a release pipe fixed on the ground.

[0025] Specifically, the driving component includes:

[0026] A fan blade cavity, one end of which is connected to a node cavity portion that can communicate with the inlet port through an inlet pipe;

[0027] The other end of the fan blade cavity is connected to another node cavity portion that can communicate with the air outlet through an outlet pipe;

[0028] The fan blade cavity is provided with a rotating shaft, and the rotating shaft is connected to a driving blade;

[0029] The first end of the rotating shaft extends out of the fan blade cavity and is connected to a fan shaft, and the fan shaft is connected to a fan bearing;

[0030] The fan bearing is fixed on a fan bearing seat, and the fan bearing seat is fixedly connected to the outer wall of the adjacent node cavity;

[0031] The fan shaft is used to set the fan.

[0032] Specifically, the sampling mechanism comprises:

[0033] The main housing has a second end forming a suction chamber and having a suction port;

[0034] The suction port is detachably connected with a filter cover;

[0035] A cylinder cavity is also formed in the main housing;

[0036] A group of cylinder pistons are arranged in each of the cylinder chambers;

[0037] The cylinder chamber is in communication with the suction chamber;

[0038] The first end of the main housing is detachably connected to a sealing cover, and the sealing cover is used to seal the driving motor;

[0039] The driving motor is connected to the main housing via a connecting frame;

[0040] The outer periphery of the main shell is connected to the annular frame through a plurality of connecting ribs.

[0041] Specifically, the actuating cylinder group comprises:

[0042] A rotating disk, wherein the output end of the driving motor is connected to the center of the rotating disk;

[0043] A rotating balance shaft is connected to the center of the second surface of the rotating disk;

[0044] The second end of the rotating balance shaft is connected to a gap portion through a bearing.

[0045] Specifically, a swash plate is connected to the rotating balance shaft;

[0046] The second surface of the swash plate is evenly provided with a plurality of movable connection parts with the rotation balance shaft as the center;

[0047] The movable connection component is formed with a spherical groove having a major arc cross section;

[0048] A ball-end connecting rod, the first end of which has a connecting ball end;

[0049] The connecting ball head can be embedded and connected in the spherical groove and can rotate freely in the spherical groove;

[0050] The second end of the ball head connecting rod is used for correspondingly connecting to a group of cylinder pistons.

[0051] Specifically, the sampling capsule is installed on the top of the sealing cover;

[0052] A pressure sensor is provided on the top of the sampling capsule, and the pressure sensor is used to detect the internal pressure of the sampling capsule;

[0053] When the internal pressure of the sampling capsule exceeds a preset value, an actuator receives an exceeding signal and controls the top valve of the sampling capsule and the closing valve on the sampling tube to close, and stops the operation of the driving motor.

[0054] The detection method using the automatic downhole gas detection device comprises the following steps:

[0055] Step 1: Install the gas detection module on the release frame, release the release frame to a predetermined position in the detection well by a lifting machine, and collect the detection data of the gas detection module on the original downhole gas;

[0056] Step 2: When the gas detection module identifies that the underground gas detection flow is low, the gas source can be started, so that the driving component drives the fan to work, and the original gas in the well is used to form an air flow. The size of the gas source can be adjusted to control the flow;

[0057] Step 3: The sampling mechanism can be put into a sampling working state by starting the driving motor, and the real sampling is completed and stored in the sampling capsule;

[0058] The order of step three and step two can be swapped according to actual conditions.

[0059] The present invention has the following beneficial effects:

[0060] The advantage of this technical solution is that it reduces the use of high-power power supply equipment as much as possible, ensuring that the release frame can be safely and effectively detected underground. Different from the detection method of the prior art, this technical solution does not use forced ventilation to interfere with the original gas underground, but indirectly uses a pure mechanical power fan to provide power. It can also effectively complete sampling through a sampling mechanism, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0062] Figure 1 It is a structural schematic diagram of the present invention;

[0063] Figure 2 It is a schematic structural diagram of the release frame of the present invention;

[0064] Figure 3 It is a schematic diagram of the structure of the release frame of the present invention when viewed from above;

[0065] Figure 4 is a schematic diagram of a sampling mechanism of the present invention;

[0066] Figure 5 is a schematic diagram of a ball head connecting rod of the present invention;

[0067] Figure 6 A schematic diagram of the working system configuration of the sampling capsule of the present invention;

[0068] Figure 7 It is a three-dimensional schematic diagram of the swash plate of the present invention.

[0069] The reference numerals in the figures indicate:

[0070] Release frame 10, detection well 1, lifting machinery 2, gas detection module 100, inlet 201, outlet 202, fan 40, driving component 30, sampling mechanism 50, sampling tube 52, sampling capsule 53, driving motor 51;

[0071] Annular frame 110, connecting pipe 111, node cavity 112, top frame 120, top node cavity 121, release pipe 204;

[0072] The fan blade chamber 310, the inlet pipe 311, the outlet pipe 312, the fan shaft 41, and the fan bearing 42;

[0073] Main housing 510, suction chamber 511, suction port 512, filter cover 513;

[0074] Cylinder chamber 514, sealing cover 515;

[0075] Rotating plate 520, rotating balance shaft 521, swash plate 530, spherical groove 541, ball head connecting rod 542, connecting ball head 543;

[0076] Pressure sensor 601 , actuator 602 , top valve 603 , closing valve 604 . DETAILED DESCRIPTION

[0077] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention; it should be noted that in this application, for the convenience of description, the "left side" in the current view is the "first end", the "right side" is the "second end", the "upper side" is the "first end", and the "lower side" is the "second end". The purpose of such description is to clearly express the technical solution, and it should not be understood as an improper limitation on the technical solution of this application.

[0078] The present invention aims to solve the technical problem that the real-time monitoring and sampling detection of underground gas in newly opened wells in the prior art lacks safe and reliable detection implementation and methods, and provides an underground gas automatic detection device and a detection method using the same. First, an underground gas automatic detection device is provided, please refer to Figure 1 As shown,

[0079] It includes: a release frame 10, which is released into the detection well 1 by a lifting machine 2 erected on the detection well 1; a plurality of gas detection modules 100 are integrated and installed on the release frame 10; the gas detection module 100 is used to detect a variety of gases in the well, which is mainly for the real-time monitoring part. The present invention involves installing a plurality of gas detection modules 100 on the release frame 10, and lowering the release frame 10 into the detection well 1 by the existing lifting machine 2, so as to provide a safe and reliable carrier for the plurality of gas detection modules 100. In fact, the problem of the detection sensitivity of the existing gas detection module 100, that is, the detection sensor, is mainly caused by insufficient gas flow. It should be noted that the present technical solution does not adopt the method of forced ventilation. After being hoisted and released into the well, the first detection is carried out by the body detection module 100, that is, the original gas implementation state in the well.

[0080] As for the situation that the underground gas flow detection is insufficient, the method adopted by the present technical solution is to provide a gas source 4 from the outside, through the release frame 10, that is, the release frame 10 is composed of an annular hollow structure 20, and the annular hollow structure 20 can be used to enter the guided air through the inlet 201, and the guided air is discharged through the outlet 202 of the annular hollow structure 20; the guided air can pass through a driving component 30, and the driving component 30 can drive a fan 40 to rotate, so that the fan 40 can discharge the underground gas to the upper direction; it is equivalent to indirectly providing power for a fan 40 mechanically, which is similar to the principle of an axial flow fan. If there is gas rising in the underground, the direction to the upper direction is used as the output direction, or the driving component 30 is directly used to provide pure mechanical power, so that the underground gas obtains power, which has the advantages of safety and reliability. Even if the composition of the underground gas is complex, no unexpected accidents will occur;

[0081] In addition, for sampling and testing of real gas, a sampling mechanism 50 is designed in the technical solution, and the sampling mechanism 50 is integrated on the release frame 10 and arranged above the fan 40;

[0082] The sampling mechanism 50 includes a multi-action cylinder group 500 , which is driven by the rotational driving action of a driving motor 51 so that each driving cylinder of the multi-action cylinder group 500 acts alternately to transport the downhole gas into the sampling bag 53 through a sampling tube 52 .

[0083] Therefore, the advantage of this technical solution is that it reduces the use of high-power power supply equipment as much as possible, ensuring that the release frame 10 can be safely and effectively detected underground. Different from the detection method of the prior art, this technical solution does not use forced ventilation to interfere with the original gas underground, but indirectly uses a pure mechanical power fan to provide power. It can also effectively complete sampling through the sampling mechanism 50, which is safer.

[0084] In a specific embodiment, the gas detection module 100 includes: an oxygen concentration detection module, a carbon monoxide concentration detection module, a carbon dioxide concentration detection module and a nitric oxide gas concentration detection module.

[0085] In a specific embodiment, please refer to the attached Figure 2 , 3 As shown, the release frame 10 includes: a plurality of annular frames 110 arranged longitudinally; each annular frame 110 includes four groups of node cavities 112, and adjacent node cavities 112 are connected by arc-shaped elbows 113; and upper and lower adjacent node cavities 112 are connected by connecting pipes 111.

[0086] In a specific embodiment, please refer to the attached Figure 1-7 As shown, the plurality of annular frames 110 include a top frame 120;

[0087] The top-level frame 120 includes a top-level node cavity 121; wherein, one top-level node cavity 121 is connected to the inlet 201, and the other top-level node cavity 121 is connected to the outlet 202; the inlet 201 and the outlet 202 are respectively connected to the outside of the detection well 1 through a connecting hose 203; wherein, the connecting hose 203 connected to the inlet 201 is connected to the gas source 4, and the other connecting hose 203 connected to the outlet 202 is connected to a release pipe 204 fixed on the ground.

[0088] In a specific embodiment, please refer to the attached Figure 1 , 2 As shown, the driving component 30 includes: a fan blade cavity 310, one end of which is connected to a node cavity portion 112 which can communicate with the inlet port 201 through an inlet pipe 311; the other end of the fan blade cavity 310 is connected to another node cavity portion 112 which can communicate with the air outlet 202 through an outlet pipe 312; the fan blade cavity 310 is provided with a rotating shaft 313, and a driving blade 314 is connected to the rotating shaft 313; the first end of the rotating shaft 313 extends out of the fan blade cavity 310 to connect to a fan shaft 41, and the fan shaft 41 is connected to a fan bearing 42; the fan bearing 42 is fixed on a fan bearing seat 43, and the fan bearing seat 43 is fixedly connected to the outer wall of the adjacent node cavity portion 112; the fan shaft 41 is used to set the fan 40.

[0089] In a specific embodiment, please refer to the attached Figure 5-7 As shown, the sampling mechanism 50 includes: a main housing 510, a suction chamber 511 is formed at the second end thereof, and a suction port 512 is provided; a filter cover 513 is detachably connected to the suction port 512, and is mainly used for condensing water vapor; a cylinder chamber 514 is also formed in the main housing 510; a group of cylinder pistons 501 are arranged in each cylinder chamber 514; the cylinder chamber 514 is communicated with the suction chamber 511, and the cylinder chamber 514 in the technical solution is correspondingly configured as four groups, as shown in the attached Figure 7 As shown;

[0090] The first end of the main shell 510 is detachably connected to a sealing cover 515, which is used to seal the drive motor 51 to play a sealing and explosion-proof role; the drive motor 51 is connected to the main shell 510 through a connecting frame 516; the outer periphery of the main shell 510 is connected to the annular frame 110 through a plurality of connecting ribs 517.

[0091] In a specific embodiment, please refer to the attached Figure 5-7 As shown, the cylinder group 500 includes: a rotating disk 520, the output end of the driving motor 51 is connected to the center of the rotating disk 520; the center of the second surface of the rotating disk 520 is connected to a rotating balance shaft 521; the second end of the rotating balance shaft 521 is connected to a gap portion 522 through a bearing.

[0092] A swash plate 530 is connected to the rotating balance shaft 521; a plurality of movable connecting parts 540 are evenly arranged on the second surface of the swash plate 530 with the rotating balance shaft 521 as the center; a spherical groove 541 with a major arc cross section is formed on the movable connecting part 540; a ball head connecting rod 542, a first end of which has a connecting ball head 543; the connecting ball head 543 can be embedded and connected in the spherical groove 541, and can rotate freely in the spherical groove 541; the second end of the ball head connecting rod 542 is used to connect a group of cylinder pistons 501 correspondingly; therefore, the actual sampling principle of the present technical solution is: after the swash plate 530 rotates with the driving motor 51, due to the configuration of the spherical groove 541 and the connecting ball head 543, the reciprocating motion of each cylinder is not synchronous, and the alternating operation is realized under continuous rotation, which greatly improves the sampling efficiency;

[0093] In the specific sampling configuration, the sampling capsule 53 is installed on the top of the sealing cover 515; a pressure sensor 601 is provided on the top of the sampling capsule 53, and the pressure sensor 601 is used to detect the internal pressure of the sampling capsule 53; when the internal pressure of the sampling capsule 53 exceeds a preset value, an actuator 602 receives an exceeding signal, and controls the top valve 603 of the sampling capsule 53 and the closing valve 604 on the sampling tube 52 to close, and stops the operation of the driving motor 51.

[0094] The detection method using the underground gas automatic detection device comprises the following steps:

[0095] Step 1: Install the gas detection module 100 on the release frame 10, release the release frame 10 to a predetermined position in the detection well 1 by the lifting machine 2, and collect the detection data of the gas detection module 100 on the original downhole gas;

[0096] Step 2: When the gas detection module 100 identifies that the underground gas detection flow is low, the gas source 4 can be started, so that the driving component 30 drives the fan 40 to work, and the original gas in the well is used to form an air flow. The size of the gas source 4 can be adjusted to control the flow;

[0097] Step 3: The sampling mechanism 50 can be put into a sampling working state by starting the driving motor 51, and the actual sampling is completed and stored in the sampling capsule 53;

[0098] The order of step three and step two can be swapped according to actual conditions.

[0099] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An automatic downhole gas detection device, characterized in that: include: A release frame (10) is released into the detection well (1) by means of a lifting machine (2) erected on the detection well (1); A plurality of gas detection modules (100) are integrated and mounted on the release frame (10); The gas detection module (100) is used to detect multiple gases in the well; The release frame (10) is composed of an annular hollow structure (20), and guided air can enter the annular hollow structure (20) through an inlet (201), and the guided air is discharged through an outlet (202) of the annular hollow structure (20); The guided air can pass through a driving component (30), and the driving component (30) can drive a fan (40) to rotate, so that the fan (40) guides the underground gas toward the upper wellbore; as well as a sampling mechanism (50), which is integrated on the release frame (10) and arranged above the fan (40); The sampling mechanism (50) comprises a multi-action cylinder group (500) which is driven by the rotational driving action of a driving motor (51) so that each driving cylinder of the multi-action cylinder group (500) moves in an alternating manner to transport the downhole gas into the sampling bag (53) through a sampling tube (52); The release frame (10) comprises: A plurality of annular frames (110) arranged longitudinally; The plurality of annular frames (110) include a top frame (120); The top frame (120) includes a top node cavity (121); Wherein, one top-layer node cavity (121) is connected to the inlet (201), and another top-layer node cavity (121) is connected to the outlet (202); The inlet (201) and the outlet (202) are respectively connected to the outside of the detection well (1) via a connecting hose (203); The connecting hose (203) connected to the inlet (201) is connected to the gas source (4), and the other connecting hose (203) connected to the gas outlet (202) is connected to a release pipe (204) fixed on the ground.

2. The automatic downhole gas detection device according to claim 1, characterized in that: The gas detection module (100) comprises: an oxygen concentration detection module, a carbon monoxide concentration detection module, a carbon dioxide concentration detection module and a nitric oxide gas concentration detection module.

3. The automatic downhole gas detection device according to claim 2, characterized in that: Each of the annular frames (110) comprises four groups of node cavities (112), and adjacent node cavities (112) are connected via arc-shaped curved pipes (113); The upper and lower adjacent node chambers (112) are connected via a connecting pipe (111).

4. The automatic downhole gas detection device according to claim 3, characterized in that: The driving component (30) comprises: A fan blade cavity (310), one end of which is connected to a node cavity portion (112) that is communicable with the inlet port (201) via an inlet pipe (311); The other end of the fan blade cavity (310) is connected to another node cavity portion (112) that is communicable with the air outlet (202) via an outlet pipe (312); The fan blade cavity (310) is provided with a rotating shaft (313), and the rotating shaft (313) is connected to a driving blade (314); The first end of the rotating shaft (313) extends out of the fan blade cavity (310) and is connected to a fan shaft (41); the fan shaft (41) is connected to a fan bearing (42); The fan bearing (42) is fixed on a fan bearing seat (43), and the fan bearing seat (43) is fixedly connected to the outer wall of an adjacent node cavity (112); The fan shaft (41) is used to set the fan (40).

5. The automatic downhole gas detection device according to claim 4, characterized in that: The sampling mechanism (50) comprises: The main housing (510) has a second end forming a suction chamber (511) and having a suction port (512); The suction port (512) is detachably connected to a filter cover (513); A cylinder cavity (514) is also formed in the main housing (510); A group of cylinder pistons (501) is arranged in each of the cylinder chambers (514); The cylinder chamber (514) is in communication with the suction chamber (511); The first end of the main housing (510) is detachably connected to a sealing cover (515), and the sealing cover (515) is used to seal the driving motor (51); The driving motor (51) is connected to the main housing (510) via a connecting frame (516); The outer periphery of the main shell (510) is connected to the annular frame (110) via a plurality of connecting ribs (517).

6. The automatic downhole gas detection device according to claim 5, characterized in that: The actuating cylinder group (500) comprises: A rotating disk (520), wherein the output end of the driving motor (51) is connected to the center of the rotating disk (520); A rotating balance shaft (521) is connected to the center of the second surface of the rotating disk (520); The second end of the rotating balance shaft (521) is connected to a gap portion (522) via a bearing.

7. The automatic downhole gas detection device according to claim 6, characterized in that: A swash plate (530) is connected to the rotating balance shaft (521); A plurality of movable connection components (540) are evenly distributed on the second surface of the swash plate (530) with the rotating balance shaft (521) as the center; The movable connection component (540) is formed with a spherical groove (541) having a major arc cross section; A ball-end connecting rod (542), a first end of which has a connecting ball end (543); The connecting ball head (543) can be embedded and connected in the spherical groove (541), and can rotate freely in the spherical groove (541); The second end of the ball head connecting rod (542) is used to be correspondingly connected to a group of cylinder pistons (501).

8. The automatic downhole gas detection device according to claim 7, characterized in that: The sampling bag (53) is installed on the top of the sealing cover (515); A pressure sensor (601) is provided on the top of the sampling capsule (53), and the pressure sensor (601) is used to detect the internal pressure of the sampling capsule (53); When the internal pressure of the sampling capsule (53) exceeds a preset value, an actuator (602) receives an exceeding signal and controls the top valve (603) of the sampling capsule (53) and the closing valve (604) on the sampling tube (52) to close, and stops the operation of the driving motor (51).

9. A detection method using the automatic downhole gas detection device as claimed in claim 8, characterized in that: The steps include: Step 1: Install the gas detection module (100) on the release frame (10), release the release frame (10) to a predetermined position in the detection well (1) by means of a lifting machine (2), and collect detection data of the gas detection module (100) on the original downhole gas; Step 2: When the gas detection module (100) identifies that the underground gas detection flow is low, the gas source (4) is started, so that the driving component (30) drives the fan (40) to work, and the original gas in the underground is used to form an air flow, and the size of the gas source (4) is adjusted to control the flow; Step 3: starting the driving motor (51) to enable the sampling mechanism (50) to enter a sampling working state, completing the actual sampling and storing it in the sampling capsule (53); The order of step three and step two is changed according to the actual situation.

Images