CN104502397A - Visual coal sample tank used in high-pressure low-temperature environment and using method thereof - Google Patents

Visual coal sample tank used in high-pressure low-temperature environment and using method thereof Download PDF

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Publication number
CN104502397A
CN104502397A CN201410855664.6A CN201410855664A CN104502397A CN 104502397 A CN104502397 A CN 104502397A CN 201410855664 A CN201410855664 A CN 201410855664A CN 104502397 A CN104502397 A CN 104502397A
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coal sample
tank
pressure
sample tank
hollow
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CN201410855664.6A
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CN104502397B (en
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魏建平
温志辉
刘勇
王登科
李波
代少华
张宏图
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Henan University of Technology
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Henan University of Technology
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Abstract

The invention relates to a visual coal sample tank used in high-pressure low-temperature environment and a using method thereof. The coal sample tank comprises a tank body and a tank cover, wherein a temperature-measuring pressure-measuring hole, a high-definition camera, a transparent cylinder with high pressure resistance and low temperature resistance, a hollow cuboid and a cylindrical fixed body are arranged on the coal sample tank. The phase-state change of gas under a certain condition can be observed by utilizing the high-definition camera; supplementary lighting lamps with luminance adjustable functions are arranged at the periphery of the high-definition camera so as to help the high-definition camera to observe the phase-state change of the gas in the tank on a computer through the transparent cylinder with high pressure resistance and low temperature resistance. According to the visual coal sample tank, the defect of a traditional non-visual coal sample tank is overcome, and researchers can conveniently observe a process of mutual conversion of the phase states of the gas under certain pressure and at certain temperature, so that a better test means and method is provided for researching the adsorption property of the gas and the production of gas hydrates.

Description

A kind of for the visual coal sample tank under high pressure low temperature environment and using method thereof
Technical field
The visual coal sample tank of one involved in the present invention and using method thereof, can be used on R&D institution and universities and colleges, in order to observe the change of object under certain pressure and temperature in tank body, during the characteristic of particularly learning gas, when high pressure low temperature condition is issued to the phase-state change point of gas, observable gas under uniform temperature, certain pressure by the process of gas phase to liquid phase or solid phase transformation.
Background technology
The Gas Outburst caused by coal-bed gas and blast are one of sources of harm mine safety, along with the increase of mining depth, the Environmental effect of gas becomes increasingly complex, the research characterization of adsorption of gas in coal body under various Environmental effect and the formation characteristic of hydrate thereof, utilize the clean and effective of the gas difficult problem and gas that solve Safety of Coal Mine Production and have very important meaning.
Under methane gas normal pressure, temperature drops to less than-161.5 DEG C and just can liquefy, if increase pressure to 4.59MPa, temperature drops to-82.6 DEG C, also can liquefy, therefore methane gas is being carried out in the research of high pressure low temperature, if pressure and temperature reaches the transformation temperature of gas, if energy direct vision is become the dynamic process of liquid phase or solid phase by gas phase to gas, we are grasped to phase transition temperature and the pressure of methane gas, and the generation research association of relevant gas absorption and Gas Hydrate is very helpful.
All the characteristic research adopting traditional complete totally enclosed tank body to carry out sample in R&D institution and universities and colleges' present stage, as publication number be CN203148927U, denomination of invention is the Chinese patent that a kind of coal sample tank and publication number are CN202710542U, denomination of invention is coal sample tank, by the change of pressure in tensimeter or pressure transducer indirect reaction tank, can only intuitively cannot observe gas phase-state change process in the sample to which under high pressure low temperature.
Summary of the invention
The present invention, in order to solve the deficiency of existing traditional non-visual coal sample tank, ensureing, under the prerequisite that tank body is high pressure resistant, low temperature resistant, to increase by a transparent plastic cylinder at lateral opening hole, utilizes high-definition camera to observe the change of sample in tank.Although high-definition camera can only observe the situation of change of sample surfaces gas, because the situation of change of gas is homogeneous phase in sample, therefore also represent the situation of change of its entirety, well solve this difficult problem.
For achieving the above object, the present invention adopts following technical scheme: a kind of for the visual coal sample tank under high pressure low temperature environment, it comprises tank body and cover, it is characterized in that, wherein, the inside of tank body is provided with coal sample tank cavity, and a side of tank body is provided with the rectangular parallelepiped that shape is hollow, and the hollow space of described rectangular parallelepiped is the circular hole that diameter successively reduces, be followed successively by one-level Circularhole diameter, secondary Circularhole diameter, three grades of Circularhole diameters; Described hollow space inside is provided with transparent cylinder, and the diameter of described transparent cylinder is less than described secondary Circularhole diameter, make both contacts closely, there is the transparent cylinder outshot that a diameter is less than described three grades of Circularhole diameters, thickness is greater than three grades of circular hole thickness bottom described transparent cylinder, contacted by O type circle with described three grades of circular holes to make described transparent cylinder; Described transparent cylinder arranged outside has cylinder fixed body, described cylinder fixed body overall diameter is less than hollow one-level diameter, and be around screw thread, the interior diameter of described cylinder fixed body is identical with transparent column diameter, is sealed contact bottom cylinder fixed body by O type circle with the rectangular parallelepiped of described hollow; Described cover inside is provided with ring groove, and the width of described ring groove and described tank body consistency of thickness, and the both sides of ring groove are respectively provided with screw thread, two O type circles are had in the ring groove inside of described cover, to seal with described tank body to make described cover and contact, pressure tap and thermometer hole is had in the middle part of described cover, and the top of described pressure tap and thermometer hole is taper, the outside Bonding pressure sensor of described pressure tap, temperature sensor is directly fixed in thermometer hole by the special plug sealing of hollow and measures temperature in tank; The arranged outside of described transparent cylinder has high-definition camera.
Further, as preferably, the both sides of described cylinder fixed body are respectively provided with circular draw-in groove, and tightening tool stretches in described circular draw-in groove and is tightened on the rectangular parallelepiped of described hollow by cylinder fixed body.
Further, as preferably, the both sides of described cover are respectively provided with circular draw-in groove, and tightening tool stretches in described circular draw-in groove and is tightened on described tank body by cover.
Further, as preferably, the material of described cylinder fixed body and tank body, cover material are the same, are stainless steel and make.
Further, as preferably, described pressure tap is air inlet/outlet, and described temperature sensor is directly fixed in thermometer hole by the special plug sealing of hollow the temperature measured in tank body.
Further, as preferably, described coal sample tank cavity is of a size of high 100mm, and interior diameter is 50mm.
Further, as preferably, described high-definition camera is fixedly installed by camera bracket, and described camera bracket is arranged on the inside of described stationary cylinder, can freely move forward and backward.
Further, as preferably, described transparent cylinder is high pressure resistant, low temperature resistant transparent cylinder.
In addition, present invention also offers a kind of using method for the visual coal sample tank under high pressure low temperature environment, it is characterized in that, it comprises the following steps:
(1) first O type circle and transparent cylinder are put in order the rectangular parallelepiped of the hollow of the side of tank body, then cylinder fixed body is screwed in the rectangular parallelepiped of hollow by specific purpose tool by circular draw-in groove;
(2) then described cover is opened, required for experiment coal sample is loaded in described coal sample tank cavity, then tightens coal sample cover with specific purpose tool by circular draw-in groove, and ensure that the O type circle in cover ring groove makes the top seal of coal sample tank air tight; The pipeline of hollow is inserted in pressure tap, and described pipeline is through the special plug of hollow, make around described plug and described pressure tap as being threaded, air tight to ensure pressure tap, upward pressure sensor is connected in described pipeline outside, measure the pressure in described coal sample tank cavity by described pressure transducer, this pipeline is also inflation and blowdown piping; In described thermometer hole, connect temperature sensor by plug, and temperature sensor and pressure transducer are connected to computing machine by data line, shown the real-time change of pressure and temperature by computing machine;
(3) after the installation is complete, loading coal sample and under the gastight prerequisite of guarantee coal sample tank, in coal sample tank, be filled with experimental gas to required pressure, and coal sample tank being placed in the constant temperature oven of setting experimental temperature;
(4), high-definition camera is opened, camera bracket is utilized to place it in suitable position, regulate the brightness of light compensating lamp around that its imaging clearly is become clear, when in tank during gas generation phase-state change, picture concerned and image data can be recorded in computing machine by high-definition camera.
Beneficial effect of the present invention is, the invention solves the deficiency of existing traditional non-visual coal sample tank, under the prerequisite ensureing high pressure resistant, the low temperature of tank body, increase by a transparent plastic cylinder at lateral opening hole, utilize high-definition camera to observe the change of sample in tank.Although high-definition camera can only observe the situation of change of sample surfaces gas, because the situation of change of gas is homogeneous phase in sample, therefore also represent the situation of change of its entirety.
Accompanying drawing explanation
Fig. 1 is a kind of cut-open view for the visual coal sample tank under high pressure low temperature environment of the present invention;
Fig. 2 is the structural representation of a kind of transparent cylinder for the visual coal sample tank under high pressure low temperature environment of the present invention;
Fig. 3 is the side view after the rectangular parallelepiped of a kind of hollow for the visual coal sample tank under high pressure low temperature environment of the present invention and stationary cylinder are installed;
Fig. 4 is the schematic three dimensional views after the rectangular parallelepiped of a kind of hollow for the visual coal sample tank under high pressure low temperature environment of the present invention and stationary cylinder are installed;
Wherein, 1-tank body, 2-coal sample tank cavity, 3-cover, 4-pressure tap, 5-thermometer hole, 6,10-circular draw-in groove, 7-O type circle, the rectangular parallelepiped of 8-hollow, 9-transparent cylinder, 11-cylinder fixed body, 12-high-definition camera, 13-camera bracket, 14-transparent cylinder outshot, 15-one-level Circularhole diameter, 16-secondary Circularhole diameter, 17-tri-grades of Circularhole diameters.
Embodiment
Below in conjunction with accompanying drawing, detailed description is carried out to the present invention.But should be appreciated that being provided only of accompanying drawing understands the present invention better, they not should be understood to limitation of the present invention.
As Figure 1-4, the invention provides a kind of for the visual coal sample tank under high pressure low temperature environment, it comprises tank body 1 and cover 3, wherein, the inside of tank body 1 is provided with coal sample tank cavity 2, a side of tank body 1 is provided with the rectangular parallelepiped 8 that shape is hollow, and the hollow space of hollow rectangular parallelepiped 8 is the circular hole that diameter successively reduces, is followed successively by one-level Circularhole diameter 15, secondary Circularhole diameter 16, three grades of Circularhole diameters 17; Hollow space inside is provided with transparent cylinder 9, and the diameter of transparent cylinder 9 is less than secondary Circularhole diameter 16, make both contacts closely, there is the transparent cylinder outshot 14 that a diameter is less than three grades of Circularhole diameters 17, thickness is greater than the thickness of three grades of Circularhole diameters 17 bottom transparent cylinder 9, contacted by O type circle with three grades of Circularhole diameters 17 to make transparent cylinder 9; Transparent cylinder 9 arranged outside has cylinder fixed body 11, cylinder fixed body 11 overall diameter is less than the one-level diameter of the rectangular parallelepiped of hollow, and be around screw thread, the interior diameter of cylinder fixed body 11 is identical with transparent column 9 diameter, is sealed contact bottom cylinder fixed body 11 by O type circle with the rectangular parallelepiped 8 of hollow; Cover 3 inside is provided with ring groove, and the width of ring groove and tank body 1 consistency of thickness, and the both sides of ring groove are respectively provided with screw thread, two O type circles 7 are had in the ring groove inside of cover 3, to seal with tank body 1 to make cover 3 and contact, have pressure tap 4 and thermometer hole 5 in the middle part of cover 3, and the top of pressure tap 4 and thermometer hole 5 is taper, the outside Bonding pressure sensor of pressure tap 4, the temperature of tank interior directly measured by temperature sensor in thermometer hole 5 by the special plug of hollow; The arranged outside of transparent cylinder 9 has high-definition camera 12.
In the present embodiment, the both sides of cylinder fixed body 11 are respectively provided with circular draw-in groove 10, and tightening tool stretches in described circular draw-in groove 10 and is tightened on the rectangular parallelepiped 8 of hollow by cylinder fixed body 11.The both sides of cover 3 are respectively provided with circular draw-in groove 6, and tightening tool stretches in circular draw-in groove 6 and is tightened on tank body 1 by cover 3.The material of cylinder fixed body 11 and tank body 1, cover 3 material are the same, are stainless steel and make.Pressure tap 4 is air inlet/outlets, and temperature sensor directly seals by the special plug of hollow the temperature be fixed in thermometer hole 5 internal measurement tank body.Coal sample tank cavity 2 is of a size of high 100mm, and interior diameter is 50mm.High-definition camera 12 is fixedly installed by camera bracket 13, and camera bracket 13 is arranged on the inside of cylinder fixed body 11.
In addition, present invention also offers a kind of using method for the visual coal sample tank under high pressure low temperature environment, it comprises the following steps:
(1) first O type circle and transparent cylinder 9 are put in order the rectangular parallelepiped 8 of the hollow of the side of tank body 1, then cylinder fixed body 11 is screwed in the rectangular parallelepiped of hollow by specific purpose tool by circular draw-in groove 10;
(2) then cover 3 is opened, required coal sample will be tested and load in coal sample tank cavity 2, and then tighten coal sample cover 3 with specific purpose tool by circular draw-in groove 6, and ensure that the O type circle 7 in cover ring groove makes the top seal of coal sample tank air tight; The pipeline of hollow is inserted in pressure tap 4, and pipeline is through the special plug of hollow, make around plug and pressure tap 4 as being threaded, air tight to ensure pressure tap, upward pressure sensor is connected in pipeline outside, measure the pressure in coal sample tank cavity 2 by pressure transducer, this pipeline is also inflation and blowdown piping; In thermometer hole 5, connect temperature sensor by plug, and temperature sensor and pressure transducer are connected to computing machine by data line, shown the real-time change of pressure and temperature by computing machine;
(3) after the installation is complete, loading coal sample and under the gastight prerequisite of guarantee coal sample tank, in coal sample tank, be filled with experimental gas to required pressure, and coal sample tank being placed in the constant temperature oven of setting experimental temperature;
(4) high-definition camera 12 is opened, camera bracket 13 is utilized to place it in suitable position, regulate the brightness of light compensating lamp around that its imaging clearly is become clear, when in tank during gas generation phase-state change, picture concerned and image data can be recorded in computing machine by high-definition camera 12.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims (9)

1. one kind for the visual coal sample tank under high pressure low temperature environment, it comprises tank body and cover, it is characterized in that, wherein, the inside of tank body is provided with coal sample tank cavity, a side of tank body is provided with the rectangular parallelepiped that shape is hollow, and the hollow space of the rectangular parallelepiped of described hollow is the circular hole that diameter successively reduces, is followed successively by one-level Circularhole diameter, secondary Circularhole diameter, three grades of Circularhole diameters; Described hollow space inside is provided with transparent cylinder, and the diameter of described transparent cylinder is less than described secondary Circularhole diameter, make both contacts closely, there is the transparent cylinder outshot that a diameter is less than described three grades of Circularhole diameters, thickness is greater than the thickness of three grades of Circularhole diameters bottom described transparent cylinder, contacted by O type circle with described three grades of Circularhole diameters to make described transparent cylinder; Described transparent cylinder arranged outside has cylinder fixed body, described cylinder fixed body overall diameter is less than hollow one-level diameter, and be around screw thread, the interior diameter of described cylinder fixed body is identical with transparent column diameter, is sealed contact bottom cylinder fixed body by O type circle with the rectangular parallelepiped of described hollow; Described cover inside is provided with ring groove, and the width of described ring groove and described tank body consistency of thickness, the both sides of ring groove are respectively provided with screw thread, two O type circles are had in the ring groove inside of described cover, to seal with described tank body to make described cover and contact, have pressure tap and thermometer hole in the middle part of described cover, the top of described pressure tap and thermometer hole is taper, the outside Bonding pressure sensor of described pressure tap, temperature sensor is directly fixed in thermometer hole by the special plug sealing of hollow; The arranged outside of described transparent cylinder has high-definition camera.
2. according to claim 1 a kind of for the visual coal sample tank under high pressure low temperature environment, it is characterized in that, the both sides of described cylinder fixed body are respectively provided with circular draw-in groove, and tightening tool stretches in described circular draw-in groove and is tightened on the rectangular parallelepiped of described hollow by cylinder fixed body.
3. according to claim 1ly a kind ofly to it is characterized in that for the visual coal sample tank under high pressure low temperature environment, the both sides of described cover are respectively provided with circular draw-in groove, and tightening tool stretches in described circular draw-in groove and is tightened on described tank body by cover.
4. according to claim 1ly a kind ofly to it is characterized in that for the visual coal sample tank under high pressure low temperature environment, the material of described cylinder fixed body and tank body, cover material are the same, are stainless steel and make.
5. according to claim 1 a kind of for the visual coal sample tank under high pressure low temperature environment, it is characterized in that, described pressure tap is air inlet/outlet, and the temperature in tank body directly measured by described temperature sensor by the special plug of hollow.
6. according to claim 1ly a kind ofly to it is characterized in that for the visual coal sample tank under high pressure low temperature environment, described coal sample tank cavity is of a size of high 100mm, and interior diameter is 50mm.
7. according to claim 1 a kind of for the visual coal sample tank under high pressure low temperature environment, it is characterized in that, described high-definition camera is fixedly installed by camera bracket, and described camera bracket is arranged on the inside of described stationary cylinder, can freely move forward and backward.
8. according to claim 1ly a kind ofly to it is characterized in that for the visual coal sample tank under high pressure low temperature environment, described transparent cylinder is high pressure resistant, low temperature resistant transparent cylinder.
9. a kind of using method for the visual coal sample tank under high pressure low temperature environment according to claim 1-8 any one, it is characterized in that, it comprises the following steps:
(1) first O type circle and transparent cylinder are put in order the rectangular parallelepiped of the hollow of the side of tank body, then cylinder fixed body is screwed in the rectangular parallelepiped of hollow by specific purpose tool by circular draw-in groove;
(2) then described cover is opened, required for experiment coal sample is loaded in described coal sample tank cavity, then tightens coal sample cover with specific purpose tool by circular draw-in groove, and ensure that the O type circle in cover ring groove makes the top seal of coal sample tank air tight; The pipeline of hollow is inserted in pressure tap, and described pipeline is through the special plug of hollow, make around described plug and described pressure tap as being threaded, air tight to ensure pressure tap, upward pressure sensor is connected in described pipeline outside, measure the pressure in described coal sample tank cavity by described pressure transducer, this pipeline is also inflation and blowdown piping; In described thermometer hole, connect temperature sensor by plug, and temperature sensor and pressure transducer are connected to computing machine by data line, shown the real-time change of pressure and temperature by computing machine;
(3) after the installation is complete, loading coal sample and under the gastight prerequisite of guarantee coal sample tank, in coal sample tank, be filled with experimental gas to required pressure, and coal sample tank being placed in the constant temperature oven of setting experimental temperature;
(4) high-definition camera is opened, camera bracket is utilized to place it in suitable position, regulate the brightness of light compensating lamp around that its imaging clearly is become clear, when in tank during gas generation phase-state change, picture concerned and image data can be recorded in computing machine by high-definition camera.
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CN108195873A (en) * 2017-12-26 2018-06-22 黑龙江科技大学 A kind of visualization coal sample tank and its application method under high pressure low temperature environment

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108195873A (en) * 2017-12-26 2018-06-22 黑龙江科技大学 A kind of visualization coal sample tank and its application method under high pressure low temperature environment

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