Sealing-free coal seam hole gas pressure tester

Abstract

The utility model belongs to the technical field related to mining instruments, and provides a sealing-free coal seam hole gas pressure tester which comprises a detection table and a coal sample placing chamber, a control terminal, a power switch, a printer, a plurality of groups of intermediate relays, an anti-explosion electromagnetic valve and a glass rotameter are arranged in the detection table; a first switch, a second switch and a displayer are arranged on the front face of the detection table, the displayer is connected to the control terminal, the first switch is connected to the glass rotameter, and the second switch is connected to the anti-explosion electromagnetic valve. A plurality of vent holes are formed in the coal sample placing chamber, each vent hole is respectively communicated with air outlets of a plurality of glass rotameters, and air inlets of each group of glass rotameters are respectively connected with an air storage box; the exhaust hole of the coal sample placing chamber is communicated with a vacuum pump, a temperature sensor and a temperature control assembly are further arranged in the coal sample placing chamber, and the vacuum pump, the temperature control assembly and the pressure sensor are all connected to a control terminal.

Description

Technical Field

[0001] The utility model relates to the technical field related to mining instruments, in particular to a gas pressure measuring instrument for sealing-free coal seam holes. Background Art

[0002] With the promotion and application of comprehensive coal mining technology in my country, in order to ensure safe and efficient mining, coal mines need to use a variety of gas sensors to effectively monitor the safety of gas content underground. For example, it is necessary to measure the gas pressure in the mine. The existing gas pressure measurement cycle is relatively long, and the pressure measurement site is required to give priority to stone gates or rock tunnels. The rock properties are dense and not affected by geological structure, mining pressure unloading, gas extraction, etc. There are also requirements for the sealing quality of the pressure measurement boreholes. No leakage should occur during the pressure measurement. The pressure measurement time is relatively long, and the overall operation steps are relatively cumbersome, which increases the labor intensity of workers and has low operability. Utility Model Content

[0003] The embodiment of the utility model provides a seal-free coal seam hole gas pressure measuring instrument, which is used to solve any of the above-mentioned existing technical problems.

[0004] The utility model provides a seal-free coal seam hole gas pressure measuring instrument, comprising a detection platform and a coal sample placement room; a control terminal, a power switch, a printer and multiple groups of intermediate relays, explosion-proof solenoid valves, and a glass rotor flowmeter are arranged inside the detection platform, and the control terminal is connected to the intermediate relay, the explosion-proof solenoid valve, the power switch, the glass rotor flowmeter and the printer; a switch No. 1, a switch No. 2 and a display are arranged on the front of the detection platform, the display is connected to the control terminal, the switch No. 1 is connected to the glass rotor flowmeter, and the switch No. 2 is connected to the explosion-proof solenoid valve; a plurality of air vents are arranged on the coal sample placement room, each of the air vents is respectively connected to the air outlets of the plurality of glass rotor flowmeters, and the air inlets of each group of the glass rotor flowmeters are respectively connected to air storage boxes; the exhaust hole of the coal sample placement room is connected to a vacuum pump, and a temperature control component is also arranged in the coal sample placement room, and the vacuum pump, the temperature control component and the pressure sensor are all connected to the control terminal.

[0005] In the above technical solution, the coal sample placement chamber is connected to a vacuum pump and is provided with a temperature control component inside. The set pressure and temperature in the coal sample placement chamber can be effectively adjusted, and multiple gas storage tanks in the test bench are connected to the coal sample placement chamber respectively. The concentration of the gas sample entering the coal sample placement chamber is flexibly and accurately controlled by multiple explosion-proof solenoid valves and glass rotor flowmeters. The sample can be directly placed in the coal sample placement chamber, and the storage state of the taken coal sample is restored, so that the original residual gas pressure value of the coal seam can be quickly measured, effectively avoiding the need for fixed-point sampling and the need to seal the hole after sampling. The overall operation steps are simple, easy to use, and effectively reduce the labor intensity of the staff.

[0006] Furthermore, the coal sample placement chamber is made of a high-pressure sealed tank.

[0007] Furthermore, an operating table is arranged on the top of the detection table, the control terminal, multiple groups of intermediate relays and multiple groups of glass rotor flow meters are arranged inside the operating table, and the display, switch No. 1 and switch No. 2 are arranged on the front of the operating table.

[0008] In the above technical solution, the user can control the opening and closing of any glass rotor flowmeter through switch No. 1, switch No. 2 is used to control the opening and closing of any explosion-proof solenoid valve, and the display can display the monitoring data.

[0009] Furthermore, an installation box is provided at the bottom of the detection table, the printer is placed on one side of the installation box, a drawer is provided at the bottom of the printer, and the power switch and multiple groups of explosion-proof solenoid valves are provided on the other side of the installation box.

[0010] In the above technical solution, the printer can print paper reports in real time for direct viewing.

[0011] Furthermore, heat dissipation holes are provided on the side walls of the detection platform.

[0012] Furthermore, the temperature control component includes a temperature controller and a temperature sensor, which are used to detect and regulate the temperature in the coal sample placement room.

[0013] Furthermore, a maintenance window is provided on the rear side wall of the testing platform.

[0014] Furthermore, universal wheels are arranged at the four bottom corners of the testing platform.

[0015] In the above technical solution, the universal wheels facilitate the movement of the entire testing platform.

[0016] To sum up, the beneficial effects of the utility model are as follows: by providing a coal sample placement chamber made of a high-pressure sealed tank, the collected coal samples can be placed directly in the high-pressure sealed tank, and then through multiple connected gas storage tanks, explosion-proof solenoid valves, glass rotor flowmeters and control terminals, the purpose of flexible automatic measurement of coal seam gas pressure is achieved, which effectively reduces the steps of gas pressure measurement, improves the measurement accuracy, facilitates viewing, and reduces the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a seal-free coal seam hole gas pressure measuring instrument according to an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the testing platform after the rear side wall is removed according to the embodiment of the utility model;

[0019] Figure 3 It is a rear structural schematic diagram of the detection platform according to an embodiment of the utility model.

[0020] In the figure: 101, test table; 102, coal sample placement room; 103, control terminal; 104, power switch; 105, printer; 106, intermediate relay; 107, explosion-proof solenoid valve; 108, glass rotor flowmeter; 109, switch No. 1; 110, switch No. 2; 111, display; 112, vent; 113, operating table; 114, drawer; 115, maintenance window; 116, universal wheel. DETAILED DESCRIPTION

[0021] The implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention and are only used as examples. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.

[0022] Combination Figures 1 to 3 Further description of the utility model:

[0023] Embodiment 1:

[0024] Reference Figure 1 and Figure 2 As shown, this embodiment provides a seal-free coal seam hole gas pressure measuring instrument, including a detection table 101 and a coal sample placement chamber 102;

[0025] like Figure 2As shown, the detection station 101 is provided with a control terminal 103, a power switch 104, a printer 105, and multiple sets of intermediate relays 106, an explosion-proof solenoid valve 107, and a glass rotor flowmeter 108. The control terminal 103 is connected to the intermediate relay 106, the explosion-proof solenoid valve 107, the power switch 104, the glass rotor flowmeter 108, and the printer 105;

[0026] In the above structure, the automation processor module provided on the control terminal 103 is a HC-209 module, such as Figure 1 As shown, the HC-209 module is an eight-way switch input monitoring and eight-way relay output control module. The communication structure is one RS-485 port, adopts MODBUS-RTU communication protocol, and is powered by a DC10-30V power supply. The switch output can control the intermediate relay 106 or the indicator light output. The switch status signal can be returned to the host through the switch input. The switch input can have a counting function and can be used as a pulse counting input;

[0027] A No. 1 switch 109, a No. 2 switch 110 and a display 111 are provided on the front of the detection platform 101. The display 111 is connected to the control terminal 103. The No. 1 switch 109 is connected to the glass rotor flowmeter 108. The No. 2 switch 110 is connected to the explosion-proof solenoid valve 107.

[0028] The coal sample placement chamber 102 is provided with a plurality of vent holes 112, each of the vent holes 112 is respectively connected to the gas outlets of the plurality of glass rotor flowmeters 108, and the gas inlet of each group of the glass rotor flowmeters 108 is respectively connected to a gas storage box;

[0029] The exhaust hole of the coal sample placement chamber 102 is connected to a vacuum pump (not shown in the figure), and a temperature control component (not shown in the figure) is also arranged in the coal sample placement chamber 102. The vacuum pump, the temperature control component and the pressure sensor are all connected to the control terminal 103.

[0030] In the above embodiment, the coal sample placement chamber 102 is connected to a vacuum pump, and a temperature control component is arranged inside. The set pressure and temperature in the coal sample placement chamber 102 can be effectively adjusted, and multiple gas storage tanks in the detection platform 101 are connected to the coal sample placement chamber 102 respectively. The concentration of the gas sample entering the coal sample placement chamber 102 is flexibly and accurately controlled by multiple explosion-proof electromagnetic valves 107 and glass rotor flowmeters 108. The sample can be directly placed in the coal sample placement chamber 102, and the occurrence state of the taken coal sample is restored, so that the original residual gas pressure value of the coal seam can be quickly measured, which effectively avoids the need for fixed-point sampling and the need to seal the hole after sampling. The overall operation steps are simple, easy to use, and effectively reduce the labor intensity of the staff.

[0031] Embodiment 2:

[0032] Reference Figure 1 and Figure 2 As shown, this embodiment provides a seal-free coal seam hole gas pressure measuring instrument, including a test platform 101 and a coal sample placement chamber 102, wherein the test platform 101 is internally provided with a control terminal 103, a power switch 104, a printer 105 and multiple sets of intermediate relays 106, an explosion-proof solenoid valve 107, and a glass rotor flowmeter 108, and the coal sample placement chamber 102 is made of a high-pressure sealed tank.

[0033] The front of the test bench 101 is provided with a switch No. 109, a switch No. 2 110 and a display 111, the display 111 is connected to the control terminal 103, the switch No. 109 is connected to the glass rotor flowmeter 108, the switch No. 2 110 is connected to the explosion-proof solenoid valve 107, and the display 111 connected to the control terminal 103 provides a graphical operation interface;

[0034] The coal sample placement chamber 102 is provided with a plurality of air vents 112, each of the air vents 112 is respectively connected to the air outlets of the plurality of glass rotor flowmeters 108, and the air inlets of each group of the glass rotor flowmeters 108 are respectively connected to air storage boxes; the air exhaust hole of the coal sample placement chamber 102 is connected to a vacuum pump, and a temperature control component is also provided in the coal sample placement chamber 102, and the vacuum pump, the temperature control component and the pressure sensor are all connected to the control terminal 103.

[0035] An operating table 113 is arranged on the top of the above-mentioned detection table 101, and the control terminal 103, multiple groups of intermediate relays 106 and multiple groups of glass rotor flow meters 108 are arranged inside the operating table 113. The display 111, the No. 1 switch 109 and the No. 2 switch 110 are arranged on the front of the operating table 113. The user can control the opening and closing of any glass rotor flow meter 108 through the No. 1 switch 109, and the No. 2 switch 110 is used to control the opening and closing of any explosion-proof solenoid valve 107. The display 111 can display monitoring data.

[0036] In the actual manufacturing process, an installation box is provided at the bottom of the testing table 101 in the above embodiment, the printer 105 is placed on one side of the installation box, a drawer 114 is provided at the bottom of the printer 105, and the power switch 104 and multiple groups of explosion-proof solenoid valves 107 are provided on the other side of the installation box. The printer 105 can print paper reports in real time for direct viewing.

[0037] In addition, in order to facilitate ventilation and heat dissipation of the internal equipment of the test bench 101, heat dissipation holes are set on the side walls of the test bench 101; the temperature control component includes a temperature controller and a temperature sensor for detecting and regulating the temperature in the coal sample placement chamber 102; in order to facilitate maintenance and assembly, such as Figure 3 As shown, a maintenance window 115 is provided on the rear side wall of the testing platform 101 ; universal wheels 116 are provided at the four corners of the bottom of the testing platform 101 to facilitate the movement of the entire testing platform 101 .

[0038] The utility model provides a gas pressure measuring instrument for a seal-free coal seam hole. By arranging a coal sample placement chamber made of a high-pressure sealed tank, the collected coal sample can be directly placed in the high-pressure sealed tank, and then the purpose of flexibly and automatically measuring the coal seam gas pressure is achieved through a plurality of connected gas storage tanks, explosion-proof electromagnetic valves, a glass rotor flowmeter and a control terminal. The gas pressure measuring steps are effectively reduced, the measuring accuracy is improved, the checking is convenient, the labor intensity of the workers is reduced, and it is easy to promote and use.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A gas pressure measuring instrument for unsealed coal seam holes, characterized in that: It includes a testing table and a coal sample placement room; The detection platform is provided with a control terminal, a power switch, a printer, and multiple sets of intermediate relays, an explosion-proof solenoid valve, and a glass rotor flowmeter inside, and the control terminal is connected to the intermediate relay, the explosion-proof solenoid valve, the power switch, the glass rotor flowmeter, and the printer; A No. 1 switch, a No. 2 switch and a display are arranged on the front of the test bench, the display is connected to the control terminal, the No. 1 switch is connected to the glass rotor flowmeter, and the No. 2 switch is connected to the explosion-proof solenoid valve; The coal sample placement chamber is provided with a plurality of vent holes, each of which is respectively connected to the gas outlets of the plurality of glass rotor flowmeters, and the gas inlet of each group of the glass rotor flowmeters is respectively connected to a gas storage box; The air extraction hole of the coal sample placement chamber is connected to a vacuum pump, and a temperature control component is also arranged in the coal sample placement chamber. The vacuum pump, the temperature control component and the pressure sensor are all connected to the control terminal.

2. The gas pressure measuring instrument for sealing-free coal seam holes according to claim 1 is characterized in that: The coal sample placement chamber is made of a high-pressure sealed tank.

3. The gas pressure measuring instrument for unsealed coal seam holes according to any one of claims 1 or 2, characterized in that: An operating table is arranged on the top of the detection table, the control terminal, multiple groups of intermediate relays and multiple groups of glass rotor flow meters are arranged inside the operating table, and the display, switch No. 1 and switch No. 2 are arranged on the front of the operating table.

4. The gas pressure measuring instrument for unsealed coal seam holes according to any one of claims 1 or 2, characterized in that: An installation box is arranged at the bottom of the detection table, the printer is placed on one side of the installation box, a drawer is arranged at the bottom of the printer, and the power switch and multiple groups of explosion-proof solenoid valves are arranged on the other side of the installation box.

5. The gas pressure measuring instrument for unsealed coal seam holes according to any one of claims 1 or 2, characterized in that: The side wall of the detection platform is provided with heat dissipation holes.

6. The gas pressure measuring instrument for unsealed coal seam holes according to any one of claims 1 or 2, characterized in that: The temperature control component includes a temperature controller and a temperature sensor, which are used to detect and regulate the temperature in the coal sample placement room.

7. The gas pressure measuring instrument for unsealed coal seam holes according to any one of claims 1 or 2, characterized in that: A maintenance window is provided on the rear side wall of the testing platform.

8. The gas pressure measuring instrument for unsealed coal seam holes according to any one of claims 1 or 2, characterized in that: Universal wheels are arranged at the four corners of the bottom of the testing platform.

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