Coal quality analyzer suitable for analyzing unconventional gas reservoir of coal measure

Abstract

The utility model discloses a coal quality analyzer suitable for analyzing unconventional gas reservoirs of coal series. The coal quality analyzer comprises a workbench, an analysis box body fixed at the top of the workbench, and a low-temperature frame and a high-temperature frame which are sequentially arranged in the analysis box body from top to bottom, a switching mechanism is arranged in the analysis box body and comprises an upper sealing plate arranged between the top of the low-temperature frame and the inner side of the analysis box body and a middle sealing plate arranged between the bottom of the low-temperature frame and the top of the high-temperature frame; when a coal sample is analyzed, through the cooperation of a power assembly, an upper sealing plate, a middle sealing plate, a lower sealing plate, a communicating groove, a low-temperature frame, a high-temperature frame, a heating layer and a pressure sensor, the coal sample can be quickly and nondestructively transferred into the high-temperature frame for subsequent volatile component analysis after the water analysis of the coal sample in the low-temperature frame is completed; therefore, the continuity of the analysis process is realized, and the analysis efficiency and accuracy are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sample analysis technical field especially suitable for coal quality analyzer for coal measure unconventional gas reservoir analysis. BACKGROUND

[0002] In the exploration and development of coal resources, the accurate determination of coal quality parameters plays a crucial role in assessing the mining potential of coal measure unconventional gas reservoirs, developing reasonable development strategies, and predicting production capacity. Among them, the moisture content and volatile component content in coal are two key coal quality parameters that directly affect the combustion performance, gasification efficiency, and gas occurrence state of coal.

[0003] Currently, the analysis of moisture content and volatile components in coal is usually carried out in steps. First, the coal sample is heated to a certain temperature to evaporate the moisture in the coal sample, and then the weight change of the coal sample before and after evaporation is detected to determine the moisture content of the coal sample according to the proportion of weight loss.

[0004] After completing the analysis of moisture content, the coal sample is usually further heated to a higher temperature to promote the release of volatile components (such as hydrocarbons, tar, etc.) in the coal sample. Similarly, by detecting the weight change of the coal sample before and after heating, the percentage content of volatile components in the coal sample can be calculated.

[0005] Although the moisture and volatile component content in coal can be accurately measured, the entire analysis process is not only time-consuming, but also may result in inaccurate data due to improper sample handling or operational errors, as two independent heating and weight detection processes are required at different temperature conditions. SUMMARY

[0006] The utility model overcomes the insufficient prior art and provides a coal quality analyzer suitable for coal measure unconventional gas reservoir analysis.

[0007] To achieve the above purpose, the utility model adopts the technical scheme of a coal quality analyzer suitable for coal measure unconventional gas reservoir analysis, comprising: a workbench, an analysis box body fixed on the top of the workbench, and a low-temperature frame and a high-temperature frame arranged in the analysis box body from top to bottom.

[0008] The inside of the analysis box body is provided with a switching mechanism, which comprises: an upper sealing plate arranged between the top of the low-temperature frame and the inside of the analysis box body, a middle sealing plate arranged between the bottom of the low-temperature frame and the top of the high-temperature frame, and a lower sealing plate arranged between the bottom of the high-temperature frame and the inside of the analysis box body; the upper sealing plate, the middle sealing plate and the lower sealing plate are all provided with a communication groove on the surface;

[0009] The upper sealing plate, the middle sealing plate and the lower sealing plate are all three-section rectangular structures, and are divided into left plates, middle plates and right plates from left to right; the inner sides of the middle plates close to the top are all provided with pressure sensors, the inner sides of the low-temperature frame and the high-temperature frame are both provided with heating layers, and the inside of the analysis box body is provided with a power assembly for synchronously driving the switching mechanism to translate.

[0010] In a preferred embodiment of the utility model, the low-temperature frame and the high-temperature frame are both hollow rectangular structures, and the back surfaces are fixed to the inner sides of the analysis box body; the communication grooves on the surfaces of the upper sealing plate and the lower sealing plate are both located in the middle of the right plate, and the communication groove on the surface of the middle sealing plate is located in the middle of the left plate.

[0011] In a preferred embodiment of the utility model, the power assembly comprises: a servo motor installed on the top of the analysis box body, a rotating rod fixed to the output end of the servo motor, and a plurality of racks fixed to one side of the upper sealing plate, the middle sealing plate and the lower sealing plate respectively; a plurality of gears are fixed to the side surface of the rotating rod in the inside of the analysis box body, and the side surfaces of the plurality of gears are engaged with one side of the plurality of racks.

[0012] In a preferred embodiment of the utility model, the side surfaces close to the two ends of the rotating rod are rotatably connected to the inner sides of the analysis box body through bearings.

[0013] In a preferred embodiment of the utility model, the top of the workbench is installed with an analysis controller for analyzing the moisture and volatile components in the coal sample, and the analysis controller is electrically connected with the pressure sensor, the heating layer and the servo motor respectively.

[0014] In a preferred embodiment of the utility model, one side of the low-temperature frame and the high-temperature frame is provided with a gas connection head, and one end of the gas connection head is connected with a gas conveying pipe for conveying the gas of the external equipment.

[0015] In a preferred embodiment of the utility model, a plurality of limiting grooves are formed in the two sides of the analysis box body, and the two sides of the upper sealing plate, the middle sealing plate and the lower sealing plate all penetrate to the outside of the analysis box body through the plurality of limiting grooves.

[0016] In a preferred embodiment of the utility model, one side of the upper sealing plate, the middle sealing plate and the lower sealing plate is fixed with a sliding strip, and the side surface of the sliding strip is slidably connected to the inner side of the analysis box body.

[0017] In a preferred embodiment of the utility model, the top and the bottom of the analysis box body are both fixed with an in-out material frame, and the inside of the in-out material frame is sequentially opposite to the inside of the low-temperature frame and the high-temperature frame from top to bottom.

[0018] The bottom of the workbench is fixed with a plurality of supporting legs.

[0019] The utility model solves the defects in the prior art, and has the following beneficial effects:

[0020] (1) The coal quality analyzer suitable for coal system unconventional gas reservoir analysis provided by the utility model can rapidly and nondestructively transfer the coal sample in the low-temperature frame to the high-temperature frame for subsequent volatile component analysis after the moisture analysis of the coal sample in the low-temperature frame is completed, thereby realizing the continuity of the analysis process and greatly improving the analysis efficiency and accuracy.

[0021] (2) In the utility model, the power assembly is arranged in the inside of the analysis box, and when the posture of the upper sealing plate, the middle sealing plate and the lower sealing plate and the low-temperature frame and the high-temperature frame is switched, the servo motor, the rotating rod, the plurality of racks and the plurality of gears are cooperated to synchronously drive the upper sealing plate, the middle sealing plate and the lower sealing plate to move, so that the driving linkage is good and the translation is accurate, thereby improving the accuracy and reliability of the state switching. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further described in connection with the drawings and embodiments;

[0023] Figure 1 is the perspective structural diagram of the preferred embodiment of the utility model;

[0024] Figure 2 is the analysis box half cutaway structure diagram of the preferred embodiment of the utility model;

[0025] Figure 3 is the state structure diagram of the switching mechanism of the coal sample feeding or discharging (1), coal sample heating (2) and coal sample switching analysis environment state (3) relative to the low-temperature frame and the high-temperature frame;

[0026] In the drawing: 1, workbench; 2, analysis box; 3, low-temperature frame; 31, high-temperature frame; 4, upper sealing plate; 41, middle sealing plate; 42, lower sealing plate; 43, communication groove; 411, left plate; 412, middle plate; 413, right plate; 5, heating layer; 6, servo motor; 61, rotating rod; 62, rack; 63, gear; 7, analysis controller; 8, gas connection head; 81, gas conveying pipe; 9, limiting groove; 10, feeding and discharging frame; 11, supporting leg. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail in combination with the drawings and embodiments, these drawings are all simplified schematic diagrams, only the basic structure of the utility model is shown in a schematic way, therefore it only shows the related structure of the utility model.

[0028] As Figure 1 , Figure 2 and Figure 3 Indicated, a coal quality analyzer suitable for coal system unconventional gas reservoir analysis, include: workbench 1, the analysis box body 2 fixed at the top of workbench 1 and the low temperature frame 3 and high temperature frame 31 that are sequentially arranged in analysis box body 2 inside from top to bottom;Switching mechanism is arranged in the inside of analysis box body 2, and the switching mechanism includes: the upper seal plate 4 that is arranged between the top of low temperature frame 3 and the inside of analysis box body 2, the middle seal plate 41 that is arranged between the bottom of low temperature frame 3 and the top of high temperature frame 31 and the lower seal plate 42 that is arranged between the bottom of high temperature frame 31 and the inside of analysis box body 2;The surface of upper seal plate 4, middle seal plate 41 and lower seal plate 42 are all provided with communication groove 43;Upper seal plate 4, middle seal plate 41 and lower seal plate 42 are all three rectangular structures, and are divided into left plate 411, middle plate 412 and right plate 413 from left to right;The inside of middle plate 412 near the top is all provided with pressure sensor (not shown in the drawing), and the inside of low temperature frame 3 and high temperature frame 31 is all provided with heating layer 5, and the inside of analysis box body 2 is provided with power assembly for synchronously driving switching mechanism translation.

[0029] It needs to be explained that low temperature frame 3 and high temperature frame 31 are all hollow rectangular structures, and the back is fixed with the inside of analysis box body 2;The communication groove 43 on the surface of upper seal plate 4 and lower seal plate 42 is all located in the middle of right plate 413, and the communication groove 43 on the surface of middle seal plate 41 is located in the middle of left plate 411;The length-width size of left plate 411, middle plate 412 and right plate 413 is same with the length-width size of low temperature frame 3 and high temperature frame 31, and the inside length-width size of communication groove 43 is same with the inside length size of low temperature frame 3 and high temperature frame 31;The preferred model of pressure sensor is high-temperature-resistant pressure sensor HPT202HT, and the pressure sensor can indirectly measure weight by measuring the pressure applied by the object, and the pressure sensor converts physical pressure into electrical signal, thereby realizing the measurement of weight.

[0030] Specifically, when analyzing coal samples, through the cooperation of power assembly, the posture of upper seal plate 4, middle seal plate 41 and lower seal plate 42 and low temperature frame 3 and high temperature frame 31 is adjusted to right plate 413 is aligned with low temperature frame 3 and high temperature frame 31, and the communication groove 43 of upper seal plate 4 and lower seal plate 42 is respectively through the inside of low temperature frame 3 and high temperature frame 31, as Figure 3The coal sample in and out state of (1) is shown in the drawings. The coal sample is put into the inside of the low temperature frame 3 through the top of the analysis box 2, the upper sealing plate 4, the middle sealing plate 41 and the lower sealing plate 42 are adjusted to be aligned with the low temperature frame 3 and the high temperature frame 31, and the left plate 411 is aligned with the low temperature frame 3 and the high temperature frame 31. Figure 3 The coal sample heating state of (2) is shown in the drawings. The heating layer 5 in the low temperature frame 3 is controlled to be heated to 110℃ for 5 minutes or less. The total weight of the coal sample after evaporation of moisture is measured by the pressure sensor to realize the analysis of the moisture content percentage. The upper sealing plate 4, the middle sealing plate 41 and the lower sealing plate 42 are adjusted to be aligned with the low temperature frame 3 and the high temperature frame 31, and the left plate 411 is aligned with the low temperature frame 3 and the high temperature frame 31. Figure 3 The coal sample switching analysis environment state of (3) is shown in the drawings. The coal sample is put into the inside of the high temperature frame 31 through the communication groove 43, and the heating layer 5 in the high temperature frame 31 is controlled to be heated to 820℃ for 10 minutes or less. The total weight of the coal sample after evaporation of volatile components is measured by the pressure sensor to realize the analysis of the volatile component percentage. The coal sample in and out state of (1) is adjusted to realize the discharge of the analyzed coal sample, and a new coal sample can be put in for analysis again. After the moisture analysis of the coal sample in the low temperature frame 3 is completed, the coal sample can be quickly and non-destructively transferred to the high temperature frame 31 for subsequent volatile component analysis, thereby realizing the continuity of the analysis process and greatly improving the analysis efficiency and accuracy.

[0031] As shown in the drawings, in some embodiments, the power assembly includes a servo motor 6 mounted on the top of the analysis box 2, a rotating rod 61 fixed on the output end of the servo motor 6, and a plurality of racks 62 fixed on one side of the upper sealing plate 4, the middle sealing plate 41 and the lower sealing plate 42 respectively. The rotating rod 61 is fixed with a plurality of gears 63 on the side surface inside the analysis box 2, and the side surface of the plurality of gears 63 is engaged with one side of the plurality of racks 62. Figure 2 It should be noted that the side surfaces of the rotating rod 61 near the two ends are rotatably connected to the inside of the analysis box 2 through bearings. The servo motor 6 is controlled to drive the rotating rod 61 on the output end to rotate, which can drive the plurality of gears 63 on the side surface of the rotating rod 61 to rotate, and through the engagement of the plurality of gears 63 and the plurality of racks 62, the upper sealing plate 4, the middle sealing plate 41 and the lower sealing plate 42 can be synchronously driven to move, which has good driving linkage and accurate translation, thereby improving the accuracy and reliability of the state switching.

[0032] As shown in the drawings, in some embodiments, the power assembly includes a servo motor 6 mounted on the top of the analysis box 2, a rotating rod 61 fixed on the output end of the servo motor 6, and a plurality of racks 62 fixed on one side of the upper sealing plate 4, the middle sealing plate 41 and the lower sealing plate 42 respectively. The rotating rod 61 is fixed with a plurality of gears 63 on the side surface inside the analysis box 2, and the side surface of the plurality of gears 63 is engaged with one side of the plurality of racks 62.

[0033] Figure 1 ​As shown, in some embodiments, the top of the workbench 1 is provided with an analysis controller 7 for analyzing the moisture and volatile components in the coal sample, and the analysis controller 7 is electrically connected with the pressure sensor, the heating layer 5 and the servo motor 6 respectively; through the setting of the analysis controller 7, the data detected by the pressure sensor when the coal sample is analyzed for moisture and volatile components can be obtained and recorded, realizing the full-chain automation from sample processing to data analysis, and facilitating the operator to control the start or stop of the heating layer 5 and the servo motor 6.

[0034] As shown in the Figure 2 As shown, in some embodiments, one side of the low-temperature frame 3 and the high-temperature frame 31 is provided with a gas connection head 8, and one end of the gas connection head 8 is connected with a gas conveying pipe 81 for conveying gas of external equipment; through the setting of the gas connection head 8, the gas conveying equipment of the external equipment can be connected to one end of the gas connection head 8 through the gas conveying pipe 81, and during the heating analysis, protective gas such as nitrogen can be conveyed into the low-temperature frame 3 or the high-temperature frame 31, thereby playing a protective role in the analysis environment.

[0035] In some embodiments, a plurality of limiting grooves 9 are formed on both sides of the analysis box 2, and both sides of the upper sealing plate 4, the middle sealing plate 41 and the lower sealing plate 42 are penetrated to the outside of the analysis box 2 through the plurality of limiting grooves 9; through the setting of the plurality of limiting grooves 9, both sides of the upper sealing plate 4, the middle sealing plate 41 and the lower sealing plate 42 can be supported and limited.

[0036] In some embodiments, a slide bar is fixed to one side of the upper sealing plate 4, the middle sealing plate 41 and the lower sealing plate 42, and the side surface of the slide bar is slidably connected with the inner side of the analysis box 2; through the setting of the slide bar, the limiting sliding function can be realized when the upper sealing plate 4, the middle sealing plate 41 and the lower sealing plate 42 are driven.

[0037] In some embodiments, an inlet and outlet frame 10 is fixed to the top and bottom of the analysis box 2, and the inside of the inlet and outlet frame 10 is sequentially opposite to the inside of the low-temperature frame 3 and the high-temperature frame 31 from top to bottom; through the setting of the inlet and outlet frame 10, the coal sample can be put into the inside of the analysis box 2 through the inlet and outlet frame 10 on the top of the analysis box 2, and the analyzed coal sample can be discharged through the inlet and outlet frame 10 on the bottom of the analysis box 2.

[0038] As shown in the Figure 1 As shown, in some embodiments, a plurality of supporting legs 11 are fixed to the bottom of the workbench 1; through the setting of the plurality of supporting legs 11, the workbench 1 can be supported.

[0039] The utility model discloses when using, control servo motor 6, drive the rotation of the rotating rod 61 of output end, can drive the rotation of a plurality of gear 63 of rotating rod 61 side, through a plurality of gear 63 and a plurality of rack 62's meshing, can synchronous drive upper seal plate 4, middle seal plate 41 and lower seal plate 42 remove, and the slide of spacing slot 9 and can play the role of supporting limit, adjust to right plate 413 all with low temperature frame 3 and high temperature frame 31 alignment, and the communication groove 43 of upper seal plate 4 and lower seal plate 42 respectively with the inside of low temperature frame 3 and high temperature frame 31 through, through the analysis of the in-out frame 10 of box body 2 top, put into the inside of analysis box body 2, adjust to middle plate 412 all with low temperature frame 3 and high temperature frame 31 alignment, the gas conveying equipment of external, through the gas pipe 81 connection to the one end of gas receiving head 8, to the inside of low temperature frame 3 conveying protective gas, control the heating layer 5 in low temperature frame 3, heat to 110 DEG C temperature and keep within 5 minutes, through pressure sensor and measure the total weight after the evaporation of coal sample moisture, through the analysis controller 7 and obtain and record the moisture analysis of coal sample, the data of pressure sensor detection, adjust to left plate 411 all with low temperature frame 3 and high temperature frame 31 alignment, make coal sample downward through the communication groove 43 and put into the inside of high temperature frame 31, and adjust back coal sample heating state, control the heating layer 5 in high temperature frame 31, heat to 820 DEG C and keep within 10 minutes, through pressure sensor and measure the total weight after the volatile component of coal sample, realize the analysis of volatile component percentage content, can adjust back coal sample in-out frame state, discharge after the analysis of coal sample, and can again put new coal sample and analyze again, and then can rapidly and non-destructively shift to high temperature frame 31 after completing the moisture analysis of coal sample in low temperature frame 3 and carry out subsequent volatile component analysis, to realize the continuity of analysis process, greatly improve the analysis efficiency and accuracy.

[0040] The above ideal embodiment of the utility model is disclosed, and for those skilled in the art, the utility model is obviously not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0041] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A coal quality analyzer suitable for coal-based unconventional gas reservoir analysis, characterized in that, Include: Workbench (1), analysis box (2) fixed on the top of the workbench (1), and low temperature frame (3) and high temperature frame (31) arranged in the analysis box (2) from top to bottom; The inside of the analysis box (2) is provided with a switching mechanism, the switching mechanism comprises: an upper sealing plate (4) arranged between the top of the low temperature frame (3) and the inside of the analysis box (2), a middle sealing plate (41) arranged between the bottom of the low temperature frame (3) and the top of the high temperature frame (31), and a lower sealing plate (42) arranged between the bottom of the high temperature frame (31) and the inside of the analysis box (2); the surface of the upper sealing plate (4), the middle sealing plate (41) and the lower sealing plate (42) is provided with a communication groove (43); The upper sealing plate (4), the middle sealing plate (41) and the lower sealing plate (42) are all three-section rectangular structures, which are divided into left plate (411), middle plate (412) and right plate (413) from left to right; the inside of the middle plate (412) close to the top is provided with a pressure sensor, the inside of the low temperature frame (3) and the high temperature frame (31) is provided with a heating layer (5), and the inside of the analysis box (2) is provided with a power assembly for synchronously driving the switching mechanism to translate.

2. The coal quality analyzer suitable for analyzing coalbed unconventional gas reservoirs according to claim 1, characterized in that: The low temperature frame (3) and the high temperature frame (31) are both hollow rectangular structures, and the back of each is fixed with the inside of the analysis box (2); the communication grooves (43) on the surfaces of the upper sealing plate (4) and the lower sealing plate (42) are all located in the middle of the right plate (413), and the communication groove (43) on the surface of the middle sealing plate (41) is located in the middle of the left plate (411).

3. The coal quality analyzer suitable for analyzing coalbed unconventional gas reservoirs according to claim 1, characterized in that: The power assembly comprises: a servo motor (6) mounted on the top of the analysis box (2), a rotating rod (61) fixed on the output end of the servo motor (6), and a plurality of racks (62) fixed on one side of the upper sealing plate (4), the middle sealing plate (41) and the lower sealing plate (42) respectively; a plurality of gears (63) are fixed on the side surface of the rotating rod (61) located in the inside of the analysis box (2), and the side surface of a plurality of the gears (63) is engaged with one side of a plurality of the racks (62).

4. The coal quality analyzer suitable for analyzing coalbed unconventional gas reservoirs according to claim 3, characterized in that: The side surfaces close to the two ends of the rotating rod (61) are rotatably connected with the inside of the analysis box (2) through bearings.

5. The coal quality analyzer suitable for analyzing coalbed unconventional gas reservoirs according to claim 3, characterized in that: The top of the workbench (1) is provided with an analysis controller (7) for analyzing the moisture and volatile components in the coal sample, and the analysis controller (7) is electrically connected with the pressure sensor, the heating layer (5) and the servo motor (6) respectively.

6. The coal quality analyzer suitable for analyzing coalbed unconventional gas reservoirs according to claim 1, characterized in that: One end of the gas connection head (8) is connected with a gas conveying pipe (81) for conveying the gas of the external equipment.

7. The coal quality analyzer suitable for analyzing coalbed unconventional gas reservoirs according to claim 1, characterized in that: A plurality of limiting grooves (9) are formed on both sides of the analysis box (2), and both sides of the upper sealing plate (4), the middle sealing plate (41) and the lower sealing plate (42) penetrate to the outside of the analysis box (2) through a plurality of the limiting grooves (9).

8. The coal quality analyzer suitable for analyzing coalbed unconventional gas reservoirs according to claim 1, characterized in that: One side of the upper sealing plate (4), the middle sealing plate (41) and the lower sealing plate (42) is fixed with a sliding bar, and the side surface of the sliding bar is in sliding connection with the inner side of the analysis box (2).

9. The coal quality analyzer suitable for analyzing coalbed unconventional gas reservoirs according to claim 1, characterized in that: The top and bottom of the analysis box (2) are fixed with inlet and outlet frames (10), and the inside of the inlet and outlet frames (10) is sequentially opposite to the inside of the low-temperature frame (3) and the high-temperature frame (31) from top to bottom.

10. The coal quality analyzer suitable for analyzing coalbed unconventional gas reservoirs according to claim 1, characterized in that: The bottom of the workbench (1) is fixed with a plurality of supporting legs (11).

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