CN209043477U - Coal sample liquid nitrogen temperature transmits test device - Google Patents
Coal sample liquid nitrogen temperature transmits test device Download PDFInfo
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- CN209043477U CN209043477U CN201821895279.4U CN201821895279U CN209043477U CN 209043477 U CN209043477 U CN 209043477U CN 201821895279 U CN201821895279 U CN 201821895279U CN 209043477 U CN209043477 U CN 209043477U
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Abstract
The utility model discloses a kind of coal sample liquid nitrogen temperatures to transmit test device, including contact chamber, liquid nitrogen case and multi-Channels Data Acquisition, multi-Channels Data Acquisition are connected with computing device；The screw top of contact chamber centre bore is connected with bolt；Contact chamber bottom is equipped with liquid nitrogen tank；Centre bore between bolt and support level is provided with coal petrography sample, and thermocouple is equipped in the mounting hole at the top of coal petrography sample, is connected separately with thermocouple between the insulating layer and coal petrography sample of each horizontal channel face；Liquid nitrogen tank is connected with into nitrogen pipe and nitrogen pipe out, connects liquid nitrogen case into nitrogen pipe；Nitrogen pipe connects triple valve out, and triple valve is connected with the second safety valve and relief valve.The utility model can stablize the pressure generated when liquid nitrogen gasification, and the temperature changing regularity after research liquid nitrogen and coal petrography sample contacts in coal petrography sample at different location provides basis to obtain optimal anti-reflection technological parameter for specific mining area coal petrography sample.
Description
Technical field
The utility model relates to the anti-reflection technologies of coal mine and petroleum technology field more particularly to coal seam or rock stratum.
Background technique
Coal and petroleum are to operate normally essential two kinds of fossil energies to preceding society.In the recovery process of coal and petroleum
In, it is often necessary to coal seam or rock stratum are carried out anti-reflection.It is anti-reflection to refer to using splitting in certain technological means development coal seam or rock stratum
Gap.As in coal seam crack increase, it is elongated become larger after, provide technical support for effective extraction methane gas therein.This reality
In novel, the coal seam sample taken out in coal seam or the formation sample taken out in rock stratum are referred to " coal petrography sample " word.
Antireflective technological means includes drilling or making cave is anti-reflection, drills or makes anti-reflection, the liquid nitrogen phase transformation fracturing technology in cave etc..Its
In, liquid nitrogen phase transformation fracturing technology has many advantages, such as advantage of lower cost, easily operated, but at present this technology there are it is following not
Foot:
1, liquid nitrogen temperature is very low, and low temperature can be generated at coal petrography contact surface, and the temperature difference between coal petrography different piece is bigger, splits
Gap developmental capacity is relatively better.After liquid nitrogen and coal petrography sample contacts, it on the one hand can permeate into coal seam, on the one hand can be tried along coal petrography
Minute fissure existing for script enters coal petrography sample in sample.The permeability of the coal petrography sample in different mining areas and original crack feelings
Condition is different, therefore the coal petrography sample in different mining areas is needed individually to study the temperature changing regularity after contacting with liquid nitrogen.Coal petrography
The temperature changing regularity of sample has great influence for the cranny development of coal petrography, to the spacing etc. between setting injection liquid nitrogen point
Equal technological parameters are of great significance, but lack coal petrography temperature changing regularity after research coal petrography is contacted with liquid nitrogen in the art
Technology.
2, in the anti-reflection technology of existing liquid nitrogen, liquid nitrogen largely gasifies at the contact surface with coal petrography, the gas after gasification without
Rule release, the pressure that liquid nitrogen gasification generates are unable to control.Stable pressure obtains pair research cranny development rule
It is of great significance in the best anti-reflection pressure and other parameters of specific coal petrography sample.
Utility model content
The purpose of this utility model is to provide a kind of coal sample liquid nitrogen temperatures to transmit test device, can study liquid nitrogen and coal
Temperature changing regularity after rock sample contacts in coal petrography sample, and the pressure that can stablize liquid nitrogen gasification when generates, for for
Specific mining area coal petrography sample obtains optimal anti-reflection technological parameter and provides basis.
To achieve the above object, the coal sample liquid nitrogen temperature transmitting test device of the utility model includes contact chamber, liquid nitrogen case
And multi-Channels Data Acquisition, multi-Channels Data Acquisition are connected with computing device；
Liquid nitrogen case includes cabinet, and cabinet wall is equipped with insulating layer, and cabinet top is equipped at intervals with case lid, ecto-entad is unidirectionally led
Logical check valve and the first safety valve；
The centre bore of top opening is equipped in contact chamber, the screw top of centre bore is connected with the spiral shell for blocks central aperture
Bolt；Contact chamber bottom is equipped with liquid nitrogen tank, and liquid nitrogen tank is located at below centre bore and is connected with centre bore；Centre bore base diameter is small
Diameter in centre bore middle and upper part forms the support level for being used to support coal petrography sample at center-hole diameter variation；
Center bore inner wall and liquid nitrogen tank inner wall are equipped with insulating layer；Centre bore between bolt and support level is provided with coal
Rock sample is equipped with transparent vertical passageway at bolt centerline, and face vertical passageway is equipped with mounting hole at the top of coal petrography sample,
Thermocouple is equipped in mounting hole, the connecting line of the thermocouple at mounting hole passes through vertical passageway and is connected with multi-Channels Data Acquisition
It connects；
Uniform intervals are equipped with several left horizontal channels up and down for contact chamber left side wall middle and lower part, on contact chamber right side wall middle and lower part
Lower uniform intervals are equipped with several right horizontal channels, and left horizontal channel and right horizontal channel are uniformly staggered up and down；
Insulating layer of the left horizontal channel at contact chamber left side wall and left side wall, right horizontal channel are right through contact chamber
Insulating layer at side wall and right side wall, left horizontal channel and right horizontal channel are horizontal channel；
Thermocouple is connected separately between the insulating layer and coal petrography sample of each horizontal channel face；Heat at each horizontal channel
The connecting line of galvanic couple stretches out contact chamber by corresponding horizontal channel and is connected with multi-Channels Data Acquisition；
Liquid nitrogen tank is connected with to the right into nitrogen pipe, and the bottom of the liquid nitrogen case is connected into nitrogen pipe, is equipped with into nitrogen pipe into nitrogen valve；
Liquid nitrogen tank is connected with out nitrogen pipe to the left, and nitrogen pipe is connected with triple valve out, and triple valve has there are three interface, triple valve
First interface connects out nitrogen pipe, and the second interface of triple valve is connected with the second safety valve, and the third interface of triple valve, which is equipped with, to be let out
Pressure valve；Nitrogen inside pipe wall is equipped with insulating layer into nitrogen inside pipe wall and out；
Liquid nitrogen bottom end is higher than contact chamber top and the difference in height of the two is less than or equal to 1 centimetre, and relief valve top is higher than liquid
The difference in height of nitrogenous hood top and the two is less than or equal to 1 centimetre.
The diameter of centre bore above the support level is 50 millimeters, and the diameter of the centre bore below support level is 49
Millimeter.
The nitrogen pipe out is connected with pipeline support and is supported by pipeline support.
The liquid nitrogen trench bottom is connected with recovery tube, and recovery tube is equipped with recovery valve.
The utility model has the advantage that
The conventional effect of safety valve is that outside pressure release is easy very when reaching pressure upper limit to avoid hypertonia from damaging
It explodes to being formed；Safety valve Problem of Failure is certainly existed in boiler explosion accident.In the normal usage of safety valve, safety valve is kept
Normally off is opened under extreme conditions.
The main function of safety valve in the utility model is to provide stable test pressure, protects during being pressurized test
Open state is held, can just be closed under extreme condition (liquid nitrogen wretched insufficiency or test have just started), this is normal with safety valve
It is exactly the opposite to advise usage.In short, having creatively using for safety valve in the utility model.
By difference in height control within 1 centimetre, height difference bring pressure can be made to be maintained within small range, so that test
The influence of height difference bring pressure need not be considered in the process, simplify test process.
Liquid nitrogen bottom end is higher than contact chamber top, infiltrates at the top of coal petrography sample so that liquid nitrogen has under the effect of the pressure
A possibility that.
Relief valve top is higher than liquid nitrogen case top, it is ensured that entirely the GN 2 and on-liquid of outflow at relief valve
Nitrogen prevents liquid nitrogen to be lost.
Slowly open relief valve pressure release, it is ensured that the safety of process.If directly opening the case lid or straight of liquid nitrogen case
It connects and fully opens relief valve, then the nitrogen gone out rapidly may bring harm.
When carrying out pressurization test, the cracking pressure of as needed adjustable first safety valve and the second safety valve or more
Cracking pressure different the first safety valve and the second safety valve are changed, repeats second under different test pressure conditions after replacement
Step, can the coal petrography sample to same mining area test at various pressures, so that the temperature under studying different pressures becomes
Law seeks the optimal pressure parameter of anti-reflection technique.
First step to third step is finished, and the test job of the coal petrography sample in mining area just completes at one.
The coal petrography sample for replacing different mining areas, repeats this test method, can complete the coal petrography sample testing work in many places mining area,
Temperature changing regularity of the coal petrography sample in different mining areas in liquid nitrogen is anti-reflection is obtained, to obtain not for specific mining area coal petrography sample
Same best anti-reflection technological parameter provides basis.
Contact pressure is usually realized by way of extruding, or is realized by increasing substance total amount；The utility model
In contact pressure is then increased by liquid nitrogen gasification.
Check valve in the utility model not only ensure that ambient atmos can fill into liquid nitrogen case when liquid nitrogen flows downward, but also
The nitrogen generated when preventing liquid nitrogen gasification flows out from check valve, to guarantee to increase pressure.
In short, the utility model can stablize the pressure generated when liquid nitrogen gasification, after studying liquid nitrogen and coal petrography sample contacts
Temperature changing regularity in coal petrography sample at different location (i.e. at the different distance of liquid nitrogen and the contact surface of coal petrography sample),
Basis is provided to obtain optimal anti-reflection technological parameter for specific mining area coal petrography sample.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of contact chamber；
Fig. 3 is the enlarged drawing in Fig. 2 at A；
Fig. 4 is the enlarged drawing in Fig. 2 at B；
Fig. 5 is the structural schematic diagram of contact chamber after removing coal petrography sample；
Fig. 6 is the structural schematic diagram of liquid nitrogen case.
Specific embodiment
As shown in Figures 1 to 6, the coal sample liquid nitrogen temperature transmitting test device of the utility model includes contact chamber 1, liquid nitrogen case
2 and multi-Channels Data Acquisition 3, multi-Channels Data Acquisition 3 is connected with computing device 4 by connecting line 18；
Liquid nitrogen case 2 includes cabinet 5, and 5 inner wall of cabinet is equipped with insulating layer 6, and 5 top of cabinet is equipped at intervals with case lid 7, ecto-entad
The check valve 8 and the first safety valve 9 of (direction from top to bottom illustrated) one-way conduction；
The centre bore 10 of top opening is equipped in contact chamber 1, the screw top of centre bore 10 is connected with for blocked center
The bolt 11 in hole 10；1 bottom of contact chamber is equipped with liquid nitrogen tank 12, and liquid nitrogen tank 12 is located at 10 lower section of centre bore and is connected with centre bore 10
It is logical；10 base diameter of centre bore is less than the diameter of 10 middle and upper part of centre bore, is formed at 10 diameter change of centre bore and is used to support coal
The support level 14 of rock sample 13；
10 inner wall of centre bore and 12 inner wall of liquid nitrogen tank are equipped with insulating layer 6；Center between bolt 11 and support level 14
Hole 10 is provided with coal petrography sample 13, and 11 centerline of bolt is equipped with transparent vertical passageway 15, and 13 top of coal petrography sample is just
Mounting hole 16 is equipped with to vertical passageway 15, thermocouple 17, the connecting line of the thermocouple 17 at mounting hole 16 are equipped in mounting hole 16
18 pass through vertical passageway 15 is connected with multi-Channels Data Acquisition 3；
Uniform intervals are equipped with several left horizontal channels 19 to 1 left side wall middle and lower part of contact chamber up and down, in 1 right side wall of contact chamber under
Uniform intervals are equipped with several right horizontal channels up and down in portion, and left horizontal channel 19 and about 20 right horizontal channel are uniformly staggered；
Insulating layer 6 of the left horizontal channel 19 at 1 left side wall of contact chamber and left side wall, right horizontal channel 20, which is run through, to be connect
The insulating layer 6 at 1 right side wall of room and right side wall is touched, left horizontal channel 19 and right horizontal channel 20 are horizontal channel；
Thermocouple 17 is connected separately between the insulating layer 6 and coal petrography sample 13 of each horizontal channel face；Each horizontal channel
The connecting line 18 of the thermocouple 17 at place stretches out contact chamber 1 by corresponding horizontal channel and is connected with multi-Channels Data Acquisition 3
It connects；
Liquid nitrogen tank 12 is connected with to the right into nitrogen pipe 21, and the bottom of the liquid nitrogen case 2 is connected into nitrogen pipe 21, into nitrogen pipe 21 on set
Have into nitrogen valve 22；
Liquid nitrogen tank 12 is connected with out nitrogen pipe 23 to the left, and nitrogen pipe 23 is connected with triple valve 24 out, and there are three connect the tool of triple valve 24
Mouthful, the first interface of triple valve 24 connects out nitrogen pipe 23, and the second interface of triple valve 24 is connected with the second safety valve 25, triple valve
24 third interface is equipped with relief valve 26；23 inner wall of nitrogen pipe is equipped with insulating layer 6 into 21 inner wall of nitrogen pipe and out；
2 bottom end of liquid nitrogen case is higher than 1 top of contact chamber and the difference in height of the two is less than or equal to 1 centimetre, and 26 top of relief valve is high
It is less than or equal to 1 centimetre in the difference in height of 2 top of liquid nitrogen case and the two.By difference in height control within 1 centimetre, height difference band can be made
The pressure come is maintained within small range, so that need not consider the influence of height difference bring pressure in test process, simplifies test
Process.
Computing device 4 is computer or calculator.
Wherein, multi-Channels Data Acquisition 3, computing device 4 and insulating layer 6 etc. are existing conventional equipment, specific to tie
Structure is no longer described in detail.
2 bottom end of liquid nitrogen case is higher than 1 top of contact chamber, so that liquid nitrogen has under the effect of the pressure infiltrates into coal petrography sample 13
A possibility that top.
26 top of relief valve be higher than 2 top of liquid nitrogen case, it is ensured that at relief valve 26 flow out be entirely the GN 2 rather than
Liquid nitrogen prevents liquid nitrogen to be lost.
The diameter of the centre bore 10 of 14 top of support level is 50 millimeters, the centre bore 10 of 14 lower section of support level
Diameter is 49 millimeters.
The nitrogen pipe 23 out is connected with pipeline support 27 and is supported by pipeline support 27.
12 bottom of liquid nitrogen tank is connected with recovery tube 28, and recovery tube 28 is equipped with recovery valve 29.
The invention also discloses the test method for using above-mentioned coal sample liquid nitrogen temperature transmitting test device to carry out, by with
Lower step carries out:
First step is preparation process, by the coal petrography sample preparation acquired by mining area at cylinder compatible with centre bore 10
Shape coal petrography sample 13 drills out mounting hole 16 in 13 top center of coal petrography sample, and thermocouple 17 is packed into mounting hole 16, and
The connecting line 18 of thermocouple 17 is connected behind the vertical passageway 15 in bolt 11 with multi-Channels Data Acquisition 3；It will be with
The one-to-one thermocouple 17 in horizontal channel is put into centre bore 10, the connecting line 18 of each thermocouple 17 is each passed through corresponding
Horizontal channel after be connected respectively with multi-Channels Data Acquisition 3 again, each thermocouple 17 in mounting hole 16 is separately connected
On the corresponding position of coal petrography sample 13, then coal petrography sample 13 is packed into centre bore 10, by each thermocouple 17 while being packed into
Connecting line 18 pulled out to outside contact chamber 1, avoid connecting line 18 from being deposited in centre bore 10, it should be noted that will not be hot in loading procedure
Galvanic couple 17 touches；The bottom end of coal petrography sample 13 is supported by support level 14；Bolt 11 is screwed in into centre bore 10 and tries coal petrography
In sample 13 is enclosed in；
By adjusting the position of liquid nitrogen case 2 and triple valve 24, it is ensured that 2 bottom end of liquid nitrogen case is higher than 1 top of contact chamber and the two
Difference in height be less than or equal to 1 centimetre, the difference in height that 26 top of relief valve is higher than 2 top of liquid nitrogen case and the two is less than or equal to 1 centimetre；
Relief valve 26 is opened, is closed into nitrogen valve 22 and recovery valve 29.
Second step is testing procedure, is divided into normal pressure test and pressurization two kinds of situations of test；
When carrying out normal pressure test, this step carries out by the following method:
It opens the case lid 7 of liquid nitrogen case and keeps it turned on, liquid nitrogen, under gravity, liquid are poured into liquid nitrogen case 2
Nitrogen, which is passed through, enters in liquid nitrogen tank 12 into nitrogen pipe 21 and is full of liquid nitrogen tank 12, and liquid nitrogen is contacted with the bottom surface of coal petrography sample 13 at this time, in liquid
Last point of liquid nitrogen gasification of contact surface of nitrogen and coal petrography sample 13, a part of liquid nitrogen crack intrinsic along coal petrography sample 13 enter
Coal petrography sample 13 gasifies in coal petrography sample 13 and accelerates cranny development；There is the temperature difference in coal petrography sample 13, the temperature difference makes from top to bottom
It is asynchronous to obtain the thermal expansion and contraction degree of coal petrography sample 13 everywhere, to accelerate cranny development；
Liquid nitrogen and nitrogen enter nitrogen pipe 23, and nitrogen rises at triple valve 24 in nitrogen pipe 23 out；Due to 26 He of relief valve
The case lid 7 of liquid nitrogen case is in open state, liquid nitrogen tank 12, the connectivity structure that nitrogen pipe 23 is formed into nitrogen pipe 21 and out and big gas phase
It is logical, therefore liquid nitrogen gasification not will lead to pressure rise, to carry out normal pressure test, the first safety valve 9 and the second safety valve at this time
25 do not work；
In test process, each thermocouple 17 measures the temperature of the coal petrography sample 13 at this, and temperature data is transmitted to more
Temperature data is transmitted to computing device 4 and is calculated by computing device 4 by channel data acquisition instrument 3, multi-Channels Data Acquisition 3
Temperature under condition of normal pressure at 13 different height of coal petrography sample with the testing time changing rule；The time that normal pressure test carries out reaches
To after the predetermined time, third step is carried out；
When carrying out pressurized energy test, this step carries out by the following method:
First ensure that the first safety valve 9 and the second safety valve 25 cracking pressure be the test pressure of setting (such as
1MPa)；
Next is to maintain the open state of the case lid 7 of liquid nitrogen case, and full liquid nitrogen is supplemented into liquid nitrogen case 2, is then shut off liquid nitrogen
The case lid 7 of case closes relief valve 26；
It is to open again into nitrogen valve 22, under gravity, liquid nitrogen, which is passed through into nitrogen pipe 21, to be entered in liquid nitrogen tank 12 and be full of
Liquid nitrogen tank 12, liquid nitrogen is contacted with the bottom surface of coal petrography sample 13 at this time, in the last liquid separation of contact surface of liquid nitrogen and coal petrography sample 13
Nitrogen, a part of liquid nitrogen crack intrinsic along coal petrography sample 13 enter coal petrography sample 13, gasify simultaneously in coal petrography sample 13
Accelerate cranny development；There is the temperature difference in coal petrography sample 13, the temperature difference makes the thermal expansion and contraction degree of coal petrography sample 13 everywhere from top to bottom
It is asynchronous, to accelerate cranny development；
Due to the presence of check valve 8, when the liquid nitrogen in liquid nitrogen case 2 flows downward, surrounding air can be by extroversion
It is interior that liquid nitrogen case 2 is entered by check valve 8；Otherwise the nitrogen or pressurized liquid nitrogen after gasification cannot flow into environment from inside to outside
It goes, it is ensured that realize supercharging effect while not influencing the liquid nitrogen in liquid nitrogen case 2 and flowing into liquid nitrogen tank 12；
Liquid nitrogen and nitrogen enter nitrogen pipe 23, and nitrogen rises at triple valve 24 in nitrogen pipe 23 out；Due to 26 He of relief valve
The case lid 7 of liquid nitrogen case is in closed state, therefore liquid nitrogen gasification improves the pressure in liquid nitrogen tank 12, and liquid nitrogen gasification causes to press
Power constantly increases, when the pressure at the first safety valve 9 and/or the second safety valve 25 is higher than the test pressure of setting, the first safety valve
9 and/or second safety valve 25 open, nitrogen is released through the first safety valve 9 and/or the second safety valve 25, thus steadily by pressure
It is maintained at the test pressure of setting, carries out pressurization test under the test pressure of setting；
In test process, each thermocouple 17 measures the temperature of the coal petrography sample 13 at this, and temperature data is transmitted to more
Temperature data is transmitted to computing device 4 and is calculated by computing device 4 by channel data acquisition instrument 3, multi-Channels Data Acquisition 3
Temperature under pressurized constraint at 13 different height of coal petrography sample with the testing time changing rule；The time that pressurization test carries out reaches
To after the predetermined time, third step is carried out；
Third step is to unload sample step；
If what is carried out in second step is normal pressure test, third step is first turned on recovery valve 29:
If what is carried out in second step is normal pressure test, 26 pressure release of relief valve is first slowly opened, then open liquid nitrogen case
Case lid 7, so that the pressure in coal sample liquid nitrogen temperature transmitting test device is reduced to normal pressure, then open recovery valve 29；
After opening recovery valve 29, liquid nitrogen is recycled using container, bolt 11 is then rotated and removes it by centre bore 10, then
Coal petrography sample 13 is taken out, each thermocouple 17 is removed by coal petrography sample 13, saves 4 data of computing device, completes test process.
Slowly open 26 pressure release of relief valve, it is ensured that the safety of process.If directly open liquid nitrogen case case lid 7 or
Relief valve 26 directly is fully opened, then the nitrogen gone out rapidly may bring harm.
When carrying out pressurization test, the cracking pressure of as needed adjustable first safety valve 9 and the second safety valve 25 or
Person replaces different the first safety valves 9 and the second safety valve 25 of cracking pressure, repeats under different test pressure conditions after replacement
Carry out second step, can the coal petrography sample 13 to same mining area test at various pressures, to study different pressures
Under temperature changing regularity, seek the optimal pressure parameter of anti-reflection technique.
First step to third step is finished, and the test job of the coal petrography sample 13 in mining area is just completed at one
?.The coal petrography sample 13 for replacing different mining areas, repeats this test method, and the coal petrography sample 13 that can complete many places mining area is surveyed
Trial work is made, and temperature changing regularity of the coal petrography sample 13 in different mining areas in liquid nitrogen is anti-reflection is obtained, for for specific mining area coal petrography
Sample 13 obtains different best anti-reflection technological parameters and provides basis.
Above embodiments are only to illustrate rather than limit the technical solution of the utility model, although referring to above-described embodiment pair
The utility model is described in detail, those skilled in the art should understand that: still can to the utility model into
Row modification or equivalent replacement should all without departing from any modification or partial replacement of the spirit and scope of the utility model
Cover in the scope of the claims of the utility model.
Claims (4)
1. coal sample liquid nitrogen temperature transmits test device, it is characterised in that: including contact chamber, liquid nitrogen case and multi-channel data acquisition
Instrument, multi-Channels Data Acquisition are connected with computing device；
Liquid nitrogen case includes cabinet, cabinet wall is equipped with insulating layer, and cabinet top is equipped at intervals with case lid, ecto-entad one-way conduction
Check valve and the first safety valve；
The centre bore of top opening is equipped in contact chamber, the screw top of centre bore is connected with the bolt for blocks central aperture；
Contact chamber bottom is equipped with liquid nitrogen tank, and liquid nitrogen tank is located at below centre bore and is connected with centre bore；Centre bore base diameter is less than
The diameter of centre bore middle and upper part forms the support level for being used to support coal petrography sample at center-hole diameter variation；
Center bore inner wall and liquid nitrogen tank inner wall are equipped with insulating layer；Centre bore between bolt and support level is provided with coal petrography examination
Sample is equipped with transparent vertical passageway at bolt centerline, and face vertical passageway is equipped with mounting hole, installation at the top of coal petrography sample
Thermocouple is equipped in hole, the connecting line of the thermocouple at mounting hole passes through vertical passageway and is connected with multi-Channels Data Acquisition；
Uniform intervals are equipped with several left horizontal channels up and down for contact chamber left side wall middle and lower part, and contact chamber right side wall middle and lower part is equal up and down
Even to be equipped at intervals with several right horizontal channels, left horizontal channel and right horizontal channel are uniformly staggered up and down；
Contact chamber right side wall is run through in insulating layer of the left horizontal channel at contact chamber left side wall and left side wall, right horizontal channel
And the insulating layer at right side wall, left horizontal channel and right horizontal channel are horizontal channel；
Thermocouple is connected separately between the insulating layer and coal petrography sample of each horizontal channel face；Thermocouple at each horizontal channel
Connecting line stretched out and contact chamber and be connected with multi-Channels Data Acquisition by corresponding horizontal channel；
Liquid nitrogen tank is connected with to the right into nitrogen pipe, and the bottom of the liquid nitrogen case is connected into nitrogen pipe, is equipped with into nitrogen pipe into nitrogen valve；
Liquid nitrogen tank is connected with out nitrogen pipe to the left, and nitrogen pipe is connected with triple valve out, and triple valve tool is there are three interface, and the first of triple valve
Interface connects out nitrogen pipe, and the second interface of triple valve is connected with the second safety valve, and the third interface of triple valve is equipped with relief valve；
Nitrogen inside pipe wall is equipped with insulating layer into nitrogen inside pipe wall and out；
Liquid nitrogen bottom end is higher than contact chamber top and the difference in height of the two is less than or equal to 1 centimetre, and relief valve top is higher than liquid nitrogen case
The difference in height of top and the two is less than or equal to 1 centimetre.
2. coal sample liquid nitrogen temperature according to claim 1 transmits test device, it is characterised in that: above the support level
The diameter of centre bore be 50 millimeters, the diameter of the centre bore below support level is 49 millimeters.
3. coal sample liquid nitrogen temperature according to claim 1 transmits test device, it is characterised in that: the nitrogen pipe out is connected with
Pipeline support is simultaneously supported by pipeline support.
4. coal sample liquid nitrogen temperature according to claim 1 transmits test device, it is characterised in that: the liquid nitrogen trench bottom connects
It is connected to recovery tube, recovery tube is equipped with recovery valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821895279.4U CN209043477U (en) | 2018-11-19 | 2018-11-19 | Coal sample liquid nitrogen temperature transmits test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821895279.4U CN209043477U (en) | 2018-11-19 | 2018-11-19 | Coal sample liquid nitrogen temperature transmits test device |
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| Publication Number | Publication Date |
|---|---|
| CN209043477U true CN209043477U (en) | 2019-06-28 |
Family
ID=67042373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821895279.4U Active CN209043477U (en) | 2018-11-19 | 2018-11-19 | Coal sample liquid nitrogen temperature transmits test device |
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| Country | Link |
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| CN (1) | CN209043477U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307558A (en) * | 2018-11-19 | 2019-02-05 | 河南理工大学 | Coal sample liquid nitrogen temperature transmits test device and test method |
| CN110485981A (en) * | 2019-09-10 | 2019-11-22 | 河南理工大学 | Liquid nitrogen can be pressurized and couple fracturing permeability improvement device and anti-reflection experimental method with nitrogen |
-
2018
- 2018-11-19 CN CN201821895279.4U patent/CN209043477U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307558A (en) * | 2018-11-19 | 2019-02-05 | 河南理工大学 | Coal sample liquid nitrogen temperature transmits test device and test method |
| CN109307558B (en) * | 2018-11-19 | 2024-02-02 | 河南理工大学 | Coal sample liquid nitrogen temperature transfer testing device and testing method |
| CN110485981A (en) * | 2019-09-10 | 2019-11-22 | 河南理工大学 | Liquid nitrogen can be pressurized and couple fracturing permeability improvement device and anti-reflection experimental method with nitrogen |
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