CN109813615B - Device and method for rapidly testing firmness coefficient of coal on site - Google Patents
Device and method for rapidly testing firmness coefficient of coal on site Download PDFInfo
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- CN109813615B CN109813615B CN201910176830.2A CN201910176830A CN109813615B CN 109813615 B CN109813615 B CN 109813615B CN 201910176830 A CN201910176830 A CN 201910176830A CN 109813615 B CN109813615 B CN 109813615B
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- 239000003245 coal Substances 0.000 title claims abstract description 48
- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 8
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 10
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model provides a device of on-spot quick test coal's firmness coefficient, including transmitter and apparatus, the transmitter is including being the shell of L type, shell upper portion and lower part are respectively horizontal and vertical setting, the horizontal segment inside of shell is provided with the honeycomb duct along the horizontal direction, the vertical segment inside of shell is provided with the air supply pipe along vertical direction, the lower extreme of air supply pipe stretches out the shell and is provided with quick-operation joint, be provided with the valve below the shell on the air supply pipe, the internal diameter of air supply pipe is greater than the internal diameter of guide pipe, the air supply pipe upper end is through reducing return bend and guide pipe right-hand member intercommunication, the apparatus is the round steel, the apparatus is inserted and is established in the guide pipe, the inside manual operating mechanism that is used for making air supply pipe and guide pipe intercommunication or close that is provided with of shell. The invention also discloses a method for rapidly testing the firmness coefficient of the coal on site. The invention has simple structure, convenient operation and strong reliability, can carry out on-site rapid determination on the firmness coefficients of coal in different underground places, and has high accuracy of test results.
Description
Technical Field
The invention belongs to the technical field of coal mine safety exploitation, and particularly relates to a device and a method for rapidly testing the firmness coefficient of coal on site.
Background
The coal and gas outburst is an abnormal dynamic phenomenon that broken coal, rock and gas are suddenly thrown out to a mining space from a coal body or a rock body under the combined action of ground stress and gas, is a strong natural disaster in the underground production process of a coal mine, seriously threatens the safe production of the coal mine, and has great destructiveness.
According to the regulations for preventing and treating outburst of coal and gas and the methods for identifying the gas grade of coal mines, the firmness coefficient f value of the coal is an important parameter for judging whether the underground coal bed is outburst or not. The method is used for scientifically, accurately and rapidly measuring the hardness of coal beds at different places in the well, and is a precondition and key point for guiding coal and gas outburst prevention and treatment measures to be reasonably and effectively implemented at different places. Therefore, the downhole rapid determination of the coal firmness coefficient is of great practical significance.
The laboratory determines the firmness coefficient of coal, which has the following disadvantages: 1. the process of grinding drill cuttings is complicated, and the respiratory system of workers is affected; 2. personal operation errors, inconsistent drop hammer distances of each group of experiments, and larger errors; 3, when pulverized coal is transferred into the pulverized coal metering cylinder, loss is easy to generate; 4. longer times do not allow for rapid measurements to be made downhole.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides the device and the method for rapidly testing the firmness coefficient of the coal on site, which have the advantages of simple structure, convenient operation, safety, reliability, field test and high data accuracy.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a device of on-spot quick test coal's firmness coefficient, including transmitter and apparatus, the transmitter is including being the shell of L type, shell upper portion and lower part are respectively horizontal and vertical setting, the horizontal segment inside of shell is provided with the honeycomb duct along the horizontal direction, the left end of honeycomb duct flushes with the left end of shell horizontal segment, the vertical segment inside of shell is provided with the air supply pipe along vertical direction, the lower extreme of air supply pipe stretches out the shell and is provided with quick-operation joint, be provided with the valve below the shell on the air supply pipe, the internal diameter of air supply pipe is greater than the internal diameter of guide duct, the air supply pipe upper end is through reducing return bend and honeycomb duct right-hand member intercommunication, the apparatus is the round steel, the diameter of apparatus is slightly less than the internal diameter of guide duct, the apparatus is inserted and is established in the honeycomb duct, the right angle position of the inside right side bottom of horizontal segment and vertical segment left side upper portion of shell is provided with and is used for making air supply pipe and manual control mechanism that feeds through or close.
The manual control mechanism comprises a trigger, a driving rod, a conducting rod and a baffle, wherein the upper end of the trigger is hinged to the bottom of the right side of the horizontal section of the shell, a mounting groove which is communicated with the reducing elbow is formed in the joint of the horizontal section and the vertical section of the shell, a guide hole which is communicated with the lower part of the reducing elbow is formed in the upper part of the left side of the vertical section of the shell, the driving rod is slidably inserted in the guide hole along the horizontal direction, the left end of the driving rod is hinged to the rear side part of the trigger, the conducting rod is vertically arranged in the mounting groove, the middle part of the conducting rod is hinged to the mounting groove through a first pin roll which is arranged along the front-back direction, a compression spring is arranged between the lower end of the conducting rod and the right end of the driving rod, the lower part of the conducting rod and the right side wall of the mounting groove are hinged, the baffle is arranged inside the reducing elbow, the baffle is arranged in a left-low-right high-inclined manner, the right side of the baffle is hinged to the inner wall of the reducing elbow through a second pin roll, the baffle is fixedly connected with the second pin roll, the front end of the second pin roll extends out of the shell forwards, the upper end of the conducting rod is provided with a bent clamping hook, and the clamping hook is pressed to the right side of the left lower side of the baffle under the action of the compression spring.
The outer circumferential surface of the measuring device is provided with scales along the length direction, the diameter of the measuring device is 0.8cm, the length of the measuring device is 5cm, and the inner diameter of the guide pipe is 0.9cm.
A method of testing a device for rapidly testing the solidity coefficient of coal in situ, comprising the steps of:
(1) Checking whether the trigger and the baffle are in a reset state or not, namely, the left lower side of the baffle is convenient to be positioned between the clamping hook and the right edge of the top of the mounting groove, checking whether the valve is closed or not, and connecting a quick connector at the lower end of the air supply pipe with an underground compressed air self-rescue system pipeline after checking, wherein the underground compressed air self-rescue system pipeline is a high-pressure gas pipeline with the pressure of 0.7 MPa;
(2) Placing the measuring device into the flow guide pipe from the left end opening of the flow guide pipe, holding the vertical section of the shell, and aligning the left end of the flow guide pipe with the surface of the coal body to be detected;
(3) Opening the valve, pulling the trigger, the trigger moves to the right, the actuating lever moves to the right along the guide hole, the actuating lever right-hand member pushes against the conducting rod lower extreme and uses first round pin axle as the fulcrum and move to the right, overcome compression spring's elasticity, the pothook of conducting rod upper end rotates left, under the effect of high-pressure air current, the baffle uses the second round pin axle to rotate left upwards as the center, the baffle left side edge breaks away from the pothook, the passageway between air supply pipe and the honeycomb duct is opened, high-pressure air current produces the driving force to the tester right-hand member face, the promotion tester jets out the honeycomb duct, the tester jets into the coal body inside, record tester jets into the inside length x of coal body, the unit: mm;
(4) Calculating a coal firmness coefficient f according to the equation f=ax+b; a, b are regression constants;
(5) Closing the valve, pulling the trigger to enable the clamping hook to move leftwards, and loosening the trigger when the front end of the second pin shaft is rotated to enable the baffle to rotate rightwards and downwards to be in contact with the right edge of the top of the mounting groove, and under the action of the compression spring, clamping and positioning the left lower edge of the baffle to the right edge of the top of the mounting groove by the clamping hook;
(6) Repeating the steps (2) - (5), and testing the firmness coefficient of the coal body at the other position.
By adopting the technical scheme, the invention has the following technical effects;
1. the inner diameter of the air supply pipe is larger than that of the guide pipe, the upper end of the air supply pipe is communicated with the right end of the guide pipe through a reducing bent pipe, the reducing bent pipe plays a role in guiding high-pressure gas, and high-pressure gas flow can be further collected through the reducing bent pipe;
2. the baffle plays a role in blocking high-pressure air flow under the blocking of the clamping hook, and when the valve is closed, the baffle is manually reset, so that the high-pressure air flow is safe and not wasted;
3. the trigger and the compression spring are matched to operate, so that the baffle can be quickly opened under the action of high-pressure air flow to push the tester to shoot towards the coal body, and the coal body detector has good reliability.
In conclusion, the invention has the advantages of simple structure, convenient operation and strong reliability, can rapidly measure the firmness coefficients of underground coal at different places on site, and has high accuracy of test results.
Drawings
FIG. 1 is a vertical cross-section of the present invention;
FIG. 2 is an outline view of the present invention;
FIG. 3 is a schematic view of the tester being injected into a coal body.
Detailed Description
As shown in fig. 1 and 2, the device for rapidly testing the firmness coefficient of coal on site comprises a transmitter and a measuring device 14, wherein the transmitter comprises an L-shaped shell 1, the upper part and the lower part of the shell 1 are respectively horizontally and vertically arranged, a flow guide pipe 2 is arranged in the horizontal section of the shell 1 along the horizontal direction, the left end of the flow guide pipe 2 is flush with the left end of the horizontal section of the shell 1, an air supply pipe 3 is arranged in the vertical section of the shell 1 along the vertical direction, the lower end of the air supply pipe 3 extends out of the shell 1 and is provided with a quick connector 4, a valve 5 is arranged below the shell 1 on the air supply pipe 3, the inner diameter of the air supply pipe 3 is larger than the inner diameter of the flow guide pipe 2, the upper end of the air supply pipe 3 is communicated with the right end of the flow guide pipe 2 through a reducing elbow 6, the measuring device 14 is made of round steel, the diameter of the measuring device 14 is slightly smaller than the inner diameter of the flow guide pipe 2, the measuring device 14 is inserted in the flow guide pipe 2, and a manual control mechanism for enabling the air supply pipes 3 and 2 to be communicated or closed is arranged in the right-angle position of the right side bottom of the horizontal section and the left upper part of the vertical section of the shell 1.
The manual control mechanism comprises a trigger 7, a driving rod 8, a conducting rod 9 and a baffle 10, wherein the upper end of the trigger 7 is hinged to the right side bottom of a horizontal section of the shell 1, a mounting groove 11 which is communicated with the reducing elbow 6 is formed in the joint of the horizontal section and a vertical section of the shell 1, a guide hole which is communicated with the lower part of the mounting groove 11 is formed in the upper part of the left side of the vertical section of the shell 1, the driving rod 8 is slidably inserted in the guide hole along the horizontal direction, the left end of the driving rod 8 is hinged to the rear side part of the trigger 7, the conducting rod 9 is vertically arranged in the mounting groove 11, the middle part of the conducting rod 9 is hinged to the right end of the driving rod 8 through a first pin roll which is arranged along the front-back direction, a compression spring 12 is arranged between the lower part of the right side of the conducting rod 9 and the right side wall of the mounting groove 11, the baffle 10 is arranged in the reducing elbow 6, the baffle 10 is obliquely arranged in a left-low-right side and-high manner, the baffle 10 is hinged to the inner wall of the reducing elbow 6 through a second pin roll 15, the baffle 10 is fixedly connected with the second pin roll 15, the front end of the second pin roll 15 extends forwards the shell 1, the front end of the first pin roll is hinged to the rear side of the trigger 7, the upper end of the conducting rod 9 is vertically arranged in the mounting groove 11, the mounting groove is connected to the right side of the hook 13 through the compression spring 13, and the compression spring is arranged on the left side of the right side of the upper side of the baffle 11, and the hook is arranged on the side of the right side of the side 11, and the side of the front side is 13.
The outer circumferential surface of the measuring instrument 14 is provided with scales along the length direction, the diameter of the measuring instrument 14 is 0.8cm, the length is 5cm, and the inner diameter of the flow guiding pipe 2 is 0.9cm.
A method of testing a device for rapidly testing the solidity coefficient of coal in situ, comprising the steps of:
(1) Checking whether the trigger 7 and the baffle 10 are reset or not, namely the left lower side of the baffle 10 is conveniently positioned between the clamping hook 13 and the right edge of the top of the mounting groove 11, checking whether the valve 5 is closed or not, and connecting the quick connector 4 at the lower end of the air supply pipe 3 with a pipeline of an underground compressed air self-rescue system after checking is finished, wherein the pipeline of the underground compressed air self-rescue system is a high-pressure gas pipeline of 0.7 MPa;
(2) Placing the measuring device 14 into the flow guide pipe 2 from the left end opening of the flow guide pipe 2, holding the vertical section of the shell 1, and aligning the left end of the flow guide pipe 2 with the surface of the coal body 16 to be detected;
(3) Opening the valve 5, pulling the trigger 7, the trigger 7 moves rightwards, the driving rod 8 moves rightwards along the guide hole, the right end of the driving rod 8 pushes against the lower end of the conducting rod 9 to move rightwards by taking the first pin shaft as a fulcrum, the elastic force of the compression spring 12 is overcome, the clamping hook 13 at the upper end of the conducting rod 9 rotates leftwards, the baffle 10 rotates leftwards and upwards by taking the second pin shaft 15 as the center under the action of high-pressure air flow, the left lower side edge of the baffle 10 is separated from the clamping hook 13, a channel between the air supply pipe 3 and the guide pipe 2 is opened, the high-pressure air flow generates pushing force on the right end face of the measuring device 14, the measuring device 14 is pushed to eject the guide pipe 2, the measuring device 14 is ejected into the coal 16, as shown in fig. 3, and the length x of the measuring device 14 ejected into the coal 16 is recorded: mm;
(4) Calculating a coal firmness coefficient f according to the equation f=ax+b; a, b are regression constants;
(5) Closing the valve 5, pulling the trigger 7 to enable the clamping hook 13 to move leftwards, and loosening the trigger 7 when rotating the front end of the second pin shaft 15 to enable the baffle plate 10 to rotate rightwards and downwards to be in contact with the right edge of the top of the mounting groove 11, wherein the clamping hook 13 clamps and positions the left lower edge of the baffle plate 10 to the right edge of the top of the mounting groove 11 under the action of the compression spring 12;
(6) Repeating the steps (2) - (5), and testing the firmness coefficient of the coal body 16 at the other position.
The present embodiment is not limited in any way by the shape, material, structure, etc. of the present invention, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention are all included in the scope of protection of the technical solution of the present invention.
Claims (2)
1. An apparatus for rapidly testing the solidity coefficient of coal in situ, which is characterized in that: the device comprises an emitter and a tester, wherein the emitter comprises an L-shaped shell, the upper part and the lower part of the shell are respectively horizontally and vertically arranged, a flow guide pipe is arranged in the horizontal section of the shell along the horizontal direction, the left end of the flow guide pipe is flush with the left end of the horizontal section of the shell, a wind supply pipe is arranged in the vertical section of the shell along the vertical direction, the lower end of the wind supply pipe stretches out of the shell and is provided with a quick connector, a valve is arranged below the shell on the wind supply pipe, the inner diameter of the wind supply pipe is larger than that of the flow guide pipe, the upper end of the wind supply pipe is communicated with the right end of the flow guide pipe through a reducing elbow, the tester is made of round steel, the diameter of the tester is slightly smaller than that of the flow guide pipe, and a manual control mechanism for enabling the wind supply pipe to be communicated with or closed is arranged at the right angle position of the right side bottom of the horizontal section and the left upper part of the vertical section in the shell;
the manual control mechanism comprises a trigger, a driving rod, a conducting rod and a baffle, wherein the upper end of the trigger is hinged to the bottom of the right side of the horizontal section of the shell, a mounting groove with the top communicated with the reducing elbow is formed in the joint of the horizontal section and the vertical section in the shell, a guide hole communicated with the lower part of the mounting groove is formed in the upper part of the left side of the vertical section of the shell, the driving rod is slidably inserted in the guide hole along the horizontal direction, the left end of the driving rod is hinged to the rear side part of the trigger, the conducting rod is vertically arranged in the mounting groove, the middle part of the conducting rod is hinged to the mounting groove through a first pin roll arranged along the front-back direction, the lower end of the conducting rod is hinged to the right end of the driving rod, a compression spring is arranged between the lower part of the right side of the conducting rod and the right side wall of the mounting groove, the baffle is arranged in the reducing elbow, the baffle is obliquely arranged at the left-low and right side, the right side of the baffle is hinged to the inner wall of the reducing elbow through a second pin roll, the baffle is fixedly connected with the second pin roll, the front end of the second pin roll extends out of the shell forwards, the upper end of the conducting rod is provided with a bent clamping hook, and the clamping hook is pressed to the right side of the left lower side of the baffle to the top of the mounting groove under the action of the compression spring;
the outer circumferential surface of the measuring device is provided with scales along the length direction, the diameter of the measuring device is 0.8cm, the length of the measuring device is 5cm, and the inner diameter of the guide pipe is 0.9cm.
2. A method of testing an apparatus for rapidly testing the solidity coefficient of coal in situ as claimed in claim 1, wherein: comprises the steps of,
(1) Checking whether the trigger and the baffle are reset or not, namely, the left lower side of the baffle is positioned between the clamping hook and the right edge of the top of the mounting groove, checking whether the valve is closed or not, and connecting a quick connector at the lower end of the air supply pipe with an underground compressed air self-rescue system pipeline after checking, wherein the underground compressed air self-rescue system pipeline is a high-pressure gas pipeline with the pressure of 0.7 MPa;
(2) Placing the measuring device into the flow guide pipe from the left end opening of the flow guide pipe, holding the vertical section of the shell, and aligning the left end of the flow guide pipe with the surface of the coal body to be detected;
(3) Opening the valve, pulling the trigger, the trigger moves to the right, the actuating lever moves to the right along the guide hole, the actuating lever right-hand member pushes against the conducting rod lower extreme and uses first round pin axle as the fulcrum and move to the right, overcome compression spring's elasticity, the pothook of conducting rod upper end rotates left, under the effect of high-pressure air current, the baffle uses the second round pin axle to rotate left upwards as the center, the baffle left side edge breaks away from the pothook, the passageway between air supply pipe and the honeycomb duct is opened, high-pressure air current produces the driving force to the tester right-hand member face, the promotion tester jets out the honeycomb duct, the tester jets into the coal body inside, record tester jets into the inside length x of coal body, the unit: mm;
(4) Calculating a coal firmness coefficient f according to the equation f=ax+b; a, b are regression constants;
(5) Closing the valve, pulling the trigger to enable the clamping hook to move leftwards, and loosening the trigger when the front end of the second pin shaft is rotated to enable the baffle to rotate rightwards and downwards to be in contact with the right edge of the top of the mounting groove, and under the action of the compression spring, clamping and positioning the left lower edge of the baffle to the right edge of the top of the mounting groove by the clamping hook;
(6) Repeating the steps (2) - (5), and testing the firmness coefficient of the coal body at the other position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910176830.2A CN109813615B (en) | 2019-03-08 | 2019-03-08 | Device and method for rapidly testing firmness coefficient of coal on site |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910176830.2A CN109813615B (en) | 2019-03-08 | 2019-03-08 | Device and method for rapidly testing firmness coefficient of coal on site |
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| Publication Number | Publication Date |
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| CN109813615A CN109813615A (en) | 2019-05-28 |
| CN109813615B true CN109813615B (en) | 2024-03-22 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4696182A (en) * | 1986-06-10 | 1987-09-29 | Seti Inc. | Impact test apparatus |
| CN2035475U (en) * | 1988-10-14 | 1989-04-05 | 天津市建筑仪器厂 | Detecting instrument for coal strength |
| CN101236145A (en) * | 2007-01-29 | 2008-08-06 | 煤炭科学研究总院重庆分院 | Coal firmness coefficient rapid determination method and portable measuring equipment |
| CN201429551Y (en) * | 2009-07-03 | 2010-03-24 | 重庆俞科矿山设备有限公司 | Portable sturdiness tester for coal |
| JP2013088277A (en) * | 2011-10-18 | 2013-05-13 | Hideyuki Yasumoto | Soil hardness measuring instrument |
| CN205679491U (en) * | 2016-06-07 | 2016-11-09 | 常德市联嘉机械有限公司 | Material impact toughness tests device |
| CN108088734A (en) * | 2017-10-31 | 2018-05-29 | 中航通飞研究院有限公司 | For the Portable gas gun device that composite aircraft structure impact injury is prefabricated |
| CN209606253U (en) * | 2019-03-08 | 2019-11-08 | 河南理工大学 | A kind of device of the solid coefficient of the quick test coal in scene |
-
2019
- 2019-03-08 CN CN201910176830.2A patent/CN109813615B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4696182A (en) * | 1986-06-10 | 1987-09-29 | Seti Inc. | Impact test apparatus |
| CN2035475U (en) * | 1988-10-14 | 1989-04-05 | 天津市建筑仪器厂 | Detecting instrument for coal strength |
| CN101236145A (en) * | 2007-01-29 | 2008-08-06 | 煤炭科学研究总院重庆分院 | Coal firmness coefficient rapid determination method and portable measuring equipment |
| CN201429551Y (en) * | 2009-07-03 | 2010-03-24 | 重庆俞科矿山设备有限公司 | Portable sturdiness tester for coal |
| JP2013088277A (en) * | 2011-10-18 | 2013-05-13 | Hideyuki Yasumoto | Soil hardness measuring instrument |
| CN205679491U (en) * | 2016-06-07 | 2016-11-09 | 常德市联嘉机械有限公司 | Material impact toughness tests device |
| CN108088734A (en) * | 2017-10-31 | 2018-05-29 | 中航通飞研究院有限公司 | For the Portable gas gun device that composite aircraft structure impact injury is prefabricated |
| CN209606253U (en) * | 2019-03-08 | 2019-11-08 | 河南理工大学 | A kind of device of the solid coefficient of the quick test coal in scene |
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| CN109813615A (en) | 2019-05-28 |
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