Simple integrated geological exploration gas analyzer

Abstract

The utility model discloses a simple integrated geological exploration gas analyzer which comprises an analysis box main body, a box door, a pipe placing table, a gas analyzer, an end cover, an air inlet valve, a water outlet valve, a measuring cylinder, a drain valve, a coal sample tank and a folding object placing table, the folding object placing table is used for placing the coal sample tank, and an air outlet of the coal sample tank is used for being connected with the air inlet valve through a pipeline. Compared with the prior art, all parts of the simple integrated geological exploration gas analyzer are integrated into one box body, so that the integrity of the gas analyzer is ensured, and the gas analyzer is convenient to carry; meanwhile, the measuring cylinder is used for metering, so that the reading accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas desorption, in particular to a simple integrated geological exploration gas desorption instrument. Background Art

[0002] The geological exploration gas desorption instrument is mainly used in the fields of coalbed methane resource evaluation, coal mine safety detection, gas drainage effect evaluation, coal fire disaster prevention, etc. The geological exploration gas desorption instrument adopts the water drainage gas collection method, uses the desorbed gas to displace the water column in the measuring cylinder, and measures the gas desorption rate and desorption amount by reading the height of the gas column.

[0003] CN202010301328.2 discloses a device for measuring the gas desorption amount of a coal sample, including a degassing mechanism, an inflation mechanism, a coal sample supply mechanism, a gas desorption measurement mechanism, a first gas pipe and a second gas pipe. The gas desorption measurement mechanism includes an adjustment cylinder and a desorption instrument. One end of the adjustment cylinder is fixedly connected with a storage cylinder. An installation block is arranged in the storage cylinder. A groove is opened at one end of the installation block close to the adjustment cylinder. A sliding cylinder is slidably matched with the adjustment cylinder along its axial direction. One end of the sliding cylinder is coaxially fixedly connected with a sliding rod. The other end of the sliding rod away from the sliding cylinder is fixedly connected with a pressing block. The pressing block can be inserted into the groove. A driving unit for driving the sliding cylinder to slide is arranged in the adjustment cylinder. The second gas pipe passes through the groove, and the other end of the second gas pipe is communicated with the desorption instrument. It can conveniently control the on-off of the gas pipe, make the on-off controllability of the gas pipe stronger, and avoid the situation that the gas pipe is connected with the desorption instrument in advance.

[0004] However, the above technical solutions have the following defects: there are many individual components used, which is inconvenient to carry, and the structure is relatively complex and troublesome to use. Summary of the Invention

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art and provide a simple integrated geological exploration gas desorption instrument.

[0006] To achieve the above purpose, the utility model is implemented according to the following technical solutions:

[0007] A simple integrated geological exploration gas analyzer, comprising an analyzer box body. A box door is provided on the front end face of the analyzer box body. A pipe placement table is fixed at the bottom of the analyzer box body. A gas analyzer is fixed on the upper end face of the pipe placement table. The gas analyzer includes a base and an analysis measuring cylinder fixed on the base. The top of the analysis measuring cylinder penetrates through the top of the analyzer box body and is then installed with an end cover. An air inlet communicating with the inside of the analysis measuring cylinder is provided on one side of the base, and a water outlet communicating with the inside of the analysis measuring cylinder is provided on the other side of the base. An air inlet valve is provided at the air inlet, and a water outlet valve is provided at the water outlet. The water outlet valve is connected by a pipeline to the top of a measuring cylinder fixed at the bottom of the analyzer box body on one side of the pipe placement table, and the bottom end face of the gas analyzer is higher than the upper edge of the measuring cylinder; a drain valve is connected to the bottom of the measuring cylinder, and the drain valve is led to the outside of the analyzer box body through a pipeline; a coal sample tank is detachably connected to the top inside the analyzer box body on one side of the gas analyzer. A folding storage table is provided on the outer wall of one side of the analyzer box body. The folding storage table is used to place the coal sample tank, and the air outlet of the coal sample tank is used to be connected to the air inlet valve through a pipeline.

[0008] Furthermore, a plurality of knitted button nylon braided belts are provided at the top inside the analyzer box body for fixing the coal sample tank.

[0009] Furthermore, the folding storage table is installed on the outer wall of one side of the analyzer box body through a 90-degree self-locking folding hinge.

[0010] Furthermore, lifting bolts are installed at the four corners of the bottom of the analyzer box body.

[0011] Furthermore, a spirit level is installed on the upper end face of the top of the analyzer box body.

[0012] Furthermore, in order to facilitate movement and carrying, a handle is provided on the upper end face of the top of the analyzer box body.

[0013] Compared with the prior art, all components of the simple integrated geological exploration gas analyzer of the present utility model are integrated into a box body, ensuring the integrity of the gas analyzer and facilitating carrying; at the same time, the use of a measuring cylinder for measurement can improve the accuracy of reading. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a schematic structural diagram of the gas analyzer of the present utility model.

[0016] Figure 3 It is a schematic structural diagram of the analyzer box body.

[0017] Figure 4 It is a diagram of the use state of the present utility model.

[0018] Legend: 1. Main body of the analysis box; 2. Lifting bolt; 3. Level; 4. Pipe placement table; 5. Gas analyzer; 51. Analysis graduated cylinder; 52. Base; 53. Air inlet; 54. Water outlet; 6. End cover; 7. Coal sample tank; 8. Knitted nylon braided belt; 9. Handle; 10. Folding storage table; 11. 90-degree self-locking folding hinge; 12. Air inlet valve; 13. Pipeline; 14. Water outlet valve; 15. Graduated cylinder; 16. Drain valve; 101. Box door. Detailed implementation

[0019] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the utility model.

[0020] As Figure 1 , Figure 2 shown, this embodiment exemplarily shows a simple integrated geological exploration gas analyzer, including the main body 1 of the analysis box. A box door 101 is provided on the front end face of the main body 1 of the analysis box. This embodiment can adopt double doors, and of course, other door opening methods can also be used. A pipe placement table 4 is fixed at the bottom of the main body 1 of the analysis box. A gas analyzer 5 is fixed on the upper end face of the pipe placement table 4. The gas analyzer 5 includes a base 52 and an analysis graduated cylinder 51 fixed on the base 52. The base 52 is fixed on the upper end face of the pipe placement table 4. The top of the analysis graduated cylinder 51 penetrates through the top of the main body 1 of the analysis box and is then installed with an end cover 6. An air inlet 53 communicating with the inside of the analysis graduated cylinder 51 is provided on one side of the base 52, and a water outlet 54 communicating with the inside of the analysis graduated cylinder 51 is provided on the other side of the base 52. An air inlet valve 12 is provided at the air inlet 53, and a water outlet valve 14 is provided at the water outlet 54. The water outlet valve 14 is connected through a pipeline 13 to the top of a graduated cylinder 15 fixed at the bottom of the main body 1 of the analysis box on one side of the pipe placement table 4, and the bottom end face of the gas analyzer 5 is higher than the upper edge of the graduated cylinder 15. The purpose is to ensure that it can flow out smoothly from the water outlet valve by gravity and then smoothly enter the graduated cylinder 15. A drain valve 16 is connected to the bottom of the graduated cylinder 15, and the drain valve 16 leads to the outside of the main body 1 of the analysis box through a pipeline 13. A coal sample tank 7 (a commercially available DGC coal sample tank / coal sample cylinder can be directly purchased and used) is detachably connected to the top inside the main body 1 of the analysis box on one side of the gas analyzer 5. A folding storage table 10 is provided on the outer wall of one side of the main body 1 of the analysis box. The folding storage table 10 is installed on the outer wall of one side of the main body 1 of the analysis box through a 90-degree self-locking folding hinge 11 (which can be directly purchased). The folding storage table 10 is used to place the coal sample tank 7. The air outlet of the coal sample tank 7 is used to connect to the air inlet valve 12 through a pipeline 13.

[0021] Specifically, referring to Figure 1 , in this embodiment, a plurality of knitted button nylon braided belts 8 are provided on the top inside the main body 1 of the analysis box for fixing the coal sample tank 7. AsFigure 1 As shown, in this embodiment, three knitted button nylon braided belts 8 are provided, and the coal sample tank 7 can be fixed to the inner top of the analysis box main body 1 in a three-point manner.

[0022] In some embodiments, lifting bolts 2 are installed at the four corners of the bottom of the analysis box main body 1, and a level 3 is installed on the upper end surface of the top of the analysis box main body 1. By adjusting the lifting bolts until the bubble in the level on the top of the box body is in the centered position, the accuracy of the measuring cylinder reading can be ensured.

[0023] In some embodiments, in order to facilitate movement and carrying, a handle 9 is provided on the upper end surface of the top of the analysis box main body 1.

[0024] Refer to Figures 1-4 , and the working process of measuring the gas content in the coal mine underground using this embodiment is as follows:

[0025] (1) Open the box door 101, open the knitted nylon braided belt 8 and remove the coal sample tank 7. Adjust the lifting bolts 2 until the bubble in the level 3 on the top of the box body is in the centered position. Place the coal sample to be analyzed underground in the coal sample tank 7 and tighten the coal sample tank 7;

[0026] (2) Open the folding storage table 10, and the 90-degree self-locking folding hinge 11 will ensure that the folding storage table 10 forms a 90-degree angle with the left wall surface of the analysis box main body 1. Place the coal sample tank 7 containing the coal sample on the folding storage table 10, and connect the air outlet of the coal sample tank 10 to the air inlet 53 of the gas analyzer 5 through a pipeline (when not in use, the folding storage table can be folded and embedded in the left side wall surface of the analysis box main body 1);

[0027] (3) Open the end cover 6 of the gas analyzer 5 and inject a certain amount of water (the water can be injected before measuring gas underground or before carrying it down the well). Then close the end cover 6 of the gas analyzer 5, and open the inlet valve 12 and the outlet valve 14;

[0028] (4) Open the valve on the coal sample tank 7. The gas released by the internal analysis of the coal sample will enter the analysis measuring cylinder 51 of the gas analyzer 5 from the coal sample tank 7. As the gas is analyzed, bubbles will be generated and move upward in the gas analyzer 5, displacing the water inside the gas analyzer 5, causing the water column in the analysis measuring cylinder 51 to drop and flow into the measuring cylinder 15 through the outlet valve 14; By regularly recording the height change of the water column in the measuring cylinder 15 (for example, recording once per minute), the amount of gas released by the gas can be calculated. The specific calculation formula is as follows:

[0029] 1) Gas release amount (V): V = f(ΔP, m, k);

[0030] Among them, ΔP is the differential pressure of the water column gauge (unit: Pa), m is the weight of the coal sample (unit: g), and k is the conversion coefficient (unit: L / Pa·g);

[0031] The value of k needs to be determined according to the calibration data of the gas desorption analyzer and the actual measurement conditions;

[0032] 2) Gas desorption rate (R): R = ΔV / Δt;

[0033] Among them, ΔV is the change in the amount of gas desorbed (unit: L), and Δt is the time interval (unit: min).

[0034] This formula can be used to calculate the gas desorption rate, that is, the change in the amount of gas desorbed per unit time;

[0035] (5) After each measurement of the drainage per unit time, open the drain valve 16 to drain the water, then close it and proceed to the next experiment until the experiment ends;

[0036] (6) Before using the instrument, the intake valve, the water outlet valve, and the drain valve are all in the closed state. After use, it is also necessary to ensure that the above valves are in the closed state; then all components can be installed in the main body 1 of the desorption box for easy carrying.

[0037] The technical solution of the present utility model is not limited to the limitations of the above specific embodiments. Any technical deformation made according to the technical solution of the present utility model falls within the protection scope of the present utility model.

Claims

1. A simple integrated geological exploration gas analyzer, comprising an analysis box body, a box door is provided on the front end of the analysis box body, and is characterized in that: A tube placing platform is fixed at the bottom of the analysis box body, and a gas analyzer is fixed on the upper end surface of the tube placing platform. The gas analyzer includes a base and an analysis measuring cylinder fixed on the base, and an end cover is installed after the top of the analysis measuring cylinder passes through the top of the analysis box body. An air inlet connected to the inside of the analysis measuring cylinder is provided on one side of the base, and a water outlet connected to the inside of the analysis measuring cylinder is provided on the other side of the base. The air inlet is provided with an air inlet valve, and the water outlet is provided with a water outlet valve. The water outlet valve is connected to the top of the measuring cylinder fixed to the bottom of the analysis box body on one side of the tube placing platform through a pipeline, and the bottom end surface of the gas analyzer is higher than the upper edge of the measuring cylinder; a drain valve is connected to the bottom of the measuring cylinder, and the drain valve leads to the outside of the analysis box body through a pipeline; a coal sample tank is detachably connected to the top of the analysis box body on one side of the gas analyzer, and a foldable storage platform is provided on the outer wall of one side of the analysis box body. The foldable storage platform is used to place the coal sample tank, and the air outlet of the coal sample tank is used to connect the air inlet valve through a pipeline.

2. The simple integrated geological exploration gas analyzer according to claim 1 is characterized in that: A plurality of knitted buckle nylon braided belts are arranged on the top of the main body of the analysis box for fixing the coal sample tank.

3. The simple integrated geological exploration gas analyzer according to claim 1 is characterized in that: The foldable storage table is installed on the outer wall of one side of the analytical box body through a 90-degree self-locking folding hinge.

4. The simple integrated geological exploration gas analyzer according to claim 1 is characterized in that: Lifting bolts are installed at the four corners of the bottom of the analysis box body.

5. The simple integrated geological exploration gas analyzer according to claim 1 or 4, characterized in that: A level is installed on the upper end surface of the top of the analysis box body.

6. The simple integrated geological exploration gas analyzer according to claim 1 is characterized in that: A handle is provided on the upper end surface of the top of the analysis box body.

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