CN110031378A - A kind of coal seam carbon dioxide injection test permeability device - Google Patents
A kind of coal seam carbon dioxide injection test permeability device Download PDFInfo
- Publication number
- CN110031378A CN110031378A CN201910408473.8A CN201910408473A CN110031378A CN 110031378 A CN110031378 A CN 110031378A CN 201910408473 A CN201910408473 A CN 201910408473A CN 110031378 A CN110031378 A CN 110031378A
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- water
- cavity
- temperature
- coal seam
- carbon dioxide
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000003245 coal Substances 0.000 title claims abstract description 41
- 238000002347 injection Methods 0.000 title claims abstract description 31
- 239000007924 injection Substances 0.000 title claims abstract description 31
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 25
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 25
- 230000035699 permeability Effects 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 144
- 238000004088 simulation Methods 0.000 claims abstract description 40
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 230000011664 signaling Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229910052604 silicate mineral Inorganic materials 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- -1 crack Substances 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000005130 electrotropism Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
- G05D23/1932—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces
- G05D23/1934—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces each space being provided with one sensor acting on one or more control means
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a kind of coal seam carbon dioxide injections to test permeability device, it is related to coal mine installation production technical field, including simulation box, the inside of the simulation box offers cavity, the inner wall bottom of the cavity is provided with water assembly, the side of the upper water assembly runs through cavity and extends to the outside of simulation box, is provided with outlet component at the top of the inner wall of the cavity.The present invention remains at the water temperature of cavity inside inside normal range (NR), so as to be maintained at the temperature inside simulation box in the range of needs, and in the scene for needing to simulate different temperatures, set temperature can be adjusted by controller, so that the water temperature inside water feeding tank can satisfy the temperature of needs, the mode for solving temperature locating for existing simulation coal seam is directly to the heat supply of simulating chamber inside mostly, but direct heating, temperature is difficult to control, the problem of being difficult to keep constant temperature, being affected to test result.
Description
Technical field
The present invention relates to Safety of Coal Mine Production technical field, specifically a kind of coal seam carbon dioxide injection test permeability dress
It sets.
Background technique
It is a large amount of studies have shown that coal is greater than pair the adsorption capacity of carbon dioxide gas if other conditions are the same
The adsorption capacity of CH4, thus there has been proposed by into coal seam carbon dioxide injection gas on the one hand may pass through competitive Adsorption
Displacing the recovery ratio that methane gas improves coal bed gas well, the carbon dioxide gas of another aspect part is adsorbed in coal seam,
Reach and bury carbon dioxide gas, reduces the purpose of greenhouse gas emission, coal seam is after forming process and formation, due to flowing
Release and the effect of external force, other than forming matrix of coal, it is also possible to have the formation of the foreign substances such as clay mineral, silicate mineral
And invasion, final coal seam form answering by matrix of coal, hole, crack, clay mineral, silicate mineral and other mineral compositions
Close rock.
It can be reacted with the water in coal seam behind carbon dioxide gas injection coal seam and generate carbonic acid, the clay pit in carbonic acid and coal
Object, silicate mineral reaction, on the one hand dissolve mineral, increase the flow conductivity of coal reservoir fracture；On the other hand, again
The precipitating of meeting generating portion, reduces the flow conductivity of coal reservoir fracture, so that people start attention with carbon dioxide to replace
Methane out, and when carrying out the test of coal seam injection infiltration rate of carbon dioxide, since coal seam is located at earth's crust higher depth, coal seam
The temperature of local environment and earth's surface gap are larger, and the mode of temperature locating for existing simulation coal seam is directly to simulating chamber mostly
Internal heat supply, but direct heating, temperature are difficult to control, it is difficult to and constant temperature is kept, is affected to test result, therefore, ability
Field technique personnel provide a kind of coal seam carbon dioxide injection test permeability device, to solve mentioned above in the background art ask
Topic.
Summary of the invention
The purpose of the present invention is to provide a kind of coal seam carbon dioxide injections to test permeability device, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the invention provides the following technical scheme: a kind of coal seam carbon dioxide injection test permeability dress
It sets, including simulation box, the inside of the simulation box offers cavity, and the inner wall bottom of the cavity is provided with water assembly, institute
The side of water assembly is stated through cavity and extends to the outside of simulation box, is provided with water outlet group at the top of the inner wall of the cavity
One end of part, the outlet component runs through cavity and extends to the outside of simulation box, and the inner wall of the cavity is provided with equidistant point
First temperature sensor of cloth, the side of the simulation box are provided with water feeding tank, and the outlet component is connected to water feeding tank, described
The side lower end of water feeding tank is provided with charging pump, and the charging pump is connected to upper water assembly, and the inner wall of the water feeding tank is provided with
Electrothermal tube, the water feeding tank are internally provided with second temperature sensor, and the side of the simulation box is provided with controller, described
First temperature sensor and the output end of second temperature sensor are electrically connected with the input terminal of controller, the charging pump and
The input terminal of electrothermal tube is electrically connected with the output end of controller.
As a further solution of the present invention: hermatic door, the side of the hermatic door are provided at the top of the simulation box
It is provided with breather valve.
As further scheme of the invention: the upper water assembly includes upper hose, and the two sides of the upper hose are equal
It is communicated with distributive pipe, the tapping hole being equally spaced is offered at the top of the distributive pipe.
As further scheme of the invention: the outlet component includes outlet pipe, and the bottom of the outlet pipe connects
It is connected with catchment covers.
As further scheme of the invention: it is provided with signal receiving module at the top of the inner wall of the simulation box, it is described
Signal receiving module and the two-way electric connection of controller, the signal receiving module is connected with distant by mobile network's two-way signaling
Control device.
As further scheme of the invention: being communicated with water injection pipe, and the top of water injection pipe at the top of the water feeding tank
It is provided with pipe close.
Compared with prior art, the beneficial effects of the present invention are:
1, when needing to control the temperature inside simulation box, device is connect with external power supply, then passes through control
Temperature needed for device setting processed, controller control electrothermal tube work are heated the water inside water feeding tank, are heated to temperature
After preset temperature, controller controls charging pump work, and charging pump work is fed the water into water assembly, and water is from upper hose at this time
It flows through, during upper hose internal flow, water can gradually flow to each distributive pipe, during distributive pipe flowing, water
It can be flowed out from each tapping hole, so that water be made to enter cavity inside, cavity inside water increases at this time, and the warm water of lower layer is by upper layer
Water be expressed to inside outlet component, and be discharged by outlet component, remain the water temperature of cavity inside in the normal range
It portion can in the range of making the temperature inside simulation box be maintained at needs, and in the scene for needing to simulate different temperatures
Set temperature, which is adjusted, by controller solves existing mould so that the water temperature inside water feeding tank can satisfy the temperature of needs
The mode of temperature locating for quasi- coal seam is directly to the heat supply of simulating chamber inside mostly, but direct heating, temperature are difficult to control, it is difficult to
Constant temperature is kept, the problem of being affected to test result；
2, water feeding tank can be re-entered into after outlet component discharge in cavity upper water, then adding by electrothermal tube
Heat, then cavity inside is entered via charging pump and upper water assembly, it thus recycles, cavity inside water temperature is made to keep normal range (NR)
While, save a large amount of water resource；
It 3, can be effectively to cavity inside water and water supply by the first temperature sensor of setting and second temperature sensor
Water temperature inside case is detected, if there is deviation in the water temperature inside cavity inside water or water feeding tank, the first temperature sensor
Or second temperature sensor delivers a signal to controller, is controlled by controller electrothermal tube, to control water temperature, and is believing
Under the action of number receiving module, lower water temperature operation can be carried out by remote controler, use is more convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of coal seam carbon dioxide injection tests permeability device；
Fig. 2 is the side view that a kind of coal seam carbon dioxide injection tests permeability device；
Fig. 3 is the cross-sectional view that a kind of coal seam carbon dioxide injection is tested in permeability device；
Fig. 4 is the structural schematic diagram that a kind of coal seam carbon dioxide injection tests water-supply apparatus in permeability device.
In figure: 1, simulation box；2, cavity；3, upper water assembly；31, upper hose；32, distributive pipe；33, tapping hole；4, it is discharged
Component；41, outlet pipe；42, catchment covers；5, the first temperature sensor；6, water feeding tank；7, charging pump；8, electrothermal tube；9, the second temperature
Spend sensor；10, controller；11, signal receiving module；12, water injection pipe.
Specific embodiment
Please refer to Fig. 1~4, in the embodiment of the present invention, a kind of coal seam carbon dioxide injection tests permeability device, including simulation
Case 1, the inside of simulation box 1 offer cavity 2, and the inner wall bottom of cavity 2 is provided with water assembly 3, on upper water assembly 3 includes
Water pipe 31, the two sides of upper hose 31 are communicated with distributive pipe 32, and the top of distributive pipe 32 offers the tapping hole 33 being equally spaced,
The side of upper water assembly 3 runs through cavity 2 and extends to the outside of simulation box 1, is provided with outlet component 4 at the top of the inner wall of cavity 2,
One end of outlet component 4 runs through cavity 2 and extends to the outside of simulation box 1, and the inner wall of cavity 2 is provided with first to be equally spaced
Temperature sensor 5 (model WRM-101), the side of simulation box 1 are provided with water feeding tank 6, and outlet component 4 is connected to water feeding tank 6,
The side lower end of water feeding tank 6 is provided with charging pump 7 (model WCB-50), and charging pump 7 is connected to upper water assembly 3, water feeding tank 6
Inner wall is provided with electrothermal tube 8, and water feeding tank 6 is internally provided with second temperature sensor 9 (model WRM-101), simulation box 1
Side is provided with controller 10 (model SPC-STW-1810), the output end of the first temperature sensor 5 and second temperature sensor 9
It is electrically connected with the input terminal of controller 10, the input terminal of charging pump 7 and electrothermal tube 8 is electrical with the output end of controller 10
Connection.
In the present embodiment, when needing to control the temperature inside simulation box 1, device is connect with external power supply,
Then required temperature is set by controller 10, controller 10 controls the work of electrothermal tube 8 and adds to the water inside water feeding tank 6
Heat, after temperature is heated to preset temperature, controller 10 controls charging pump 7 and works, and the work of charging pump 7 feeds the water into water group
In part 3, water is flowed through from upper hose 31 at this time, and during 31 internal flow of upper hose, water can gradually flow to each distributive pipe
32, during distributive pipe 32 flows, water can be flowed out from each tapping hole 33, to make water enter inside cavity 2, at this time
2 internal water of cavity increases, and the water on upper layer is expressed to inside outlet component 4 by the warm water of lower layer, and is discharged by outlet component 4, makes
Water temperature inside cavity 2 remains inside normal range (NR), so as to make the temperature inside simulation box 1 be maintained at the model of needs
In enclosing, and in the scene for needing to simulate different temperatures, set temperature can be adjusted by controller 10, inside water feeding tank 6
Water temperature can satisfy the temperature of needs, the mode for solving temperature locating for existing simulation coal seam is directly to simulating chamber mostly
Internal heat supply, but direct heating, temperature are difficult to control, it is difficult to the problem of keeping constant temperature, being affected to test result, in sky
Upper water can re-enter into water feeding tank 6 after the discharge of outlet component 4 in chamber 2, then by the heating of electrothermal tube 8, then via
Charging pump 7 and upper water assembly 3 enter inside cavity 2, thus recycle, and 2 water temperature inside of cavity is made to keep the same of normal range (NR)
When, save a large amount of water resource.
Fig. 1~4 are please referred to, the top of simulation box 1 is provided with hermatic door, and the side of hermatic door is provided with breather valve, makes mould
Keep sealing state inside quasi- case 1, and can be by breather valve to gas is passed through inside simulation box 1, outlet component 4 includes water outlet
Pipe 41, the bottom of outlet pipe 41 are communicated with catchment covers 42, and when 2 internal water of cavity increases, the water of lower layer is upward, by upper layer
Water is expressed to inside outlet pipe 41 from catchment covers 42, so as to re-enter into the inside of water feeding tank 6 by outlet pipe 41.
Wherein, be provided with signal receiving module 11 at the top of the inner wall of simulation box 1, signal receiving module 11 with controller 10 pairs
Electrotropism connection, signal receiving module 11 are connected with remote controler by mobile network's two-way signaling, are passed by the first temperature of setting
Sensor 5 and second temperature sensor 9 can effectively detect the water temperature inside 2 internal water of cavity and water feeding tank 6, if
When deviation occurs in water temperature inside 2 internal water of cavity or water feeding tank 6, the first temperature sensor 5 or second temperature sensor 9 are transmitted
Signal controls electrothermal tube 8 to controller 10, by controller 10, to control water temperature, and in signal receiving module 11
Under effect, lower water temperature operation can be carried out by remote controler, use is more convenient, and the top of water feeding tank 6 is communicated with water injection pipe 12,
And the top of water injection pipe 12 is provided with pipe close, can make inside water feeding tank 6 by water injection pipe 12 to 6 inside make-up water source of water feeding tank
Keep sufficient.
The working principle of the invention is: when needing to control the temperature inside simulation box 1, by device and external electrical
Source connection, then sets required temperature by controller 10, and controller 10 controls electrothermal tube 8 and works inside to water feeding tank 6
Water is heated, and after temperature is heated to preset temperature, controller 10 controls charging pump 7 and works, and the work of charging pump 7 is fed the water into
Into upper water assembly 3, water is flowed through from upper hose 31 at this time, and during 31 internal flow of upper hose, water can be flowed to gradually respectively
A distributive pipe 32, during distributive pipe 32 flows, water can be flowed out from each tapping hole 33, so that water be made to enter cavity 2
Inside, 2 internal water of cavity increases at this time, and the water on upper layer is expressed to inside outlet component 4 by the warm water of lower layer, and by outlet component
4 discharges, remain at the water temperature inside cavity 2 inside normal range (NR), so as to be maintained at the temperature inside simulation box 1
In the range of needing, and in the scene for needing to simulate different temperatures, set temperature can be adjusted by controller 10, to supply water
Water temperature inside case 6 can satisfy the temperature of needs, and the mode for solving temperature locating for existing simulation coal seam is direct mostly
To the heat supply of simulating chamber inside, but direct heating, temperature are difficult to control, it is difficult to be kept constant temperature, be affected to test result
Problem, upper water can re-enter into water feeding tank 6 after the discharge of outlet component 4 in cavity 2, then adding by electrothermal tube 8
Heat, then entered inside cavity 2 via charging pump 7 and upper water assembly 3, it thus recycles, 2 water temperature inside of cavity is made to keep normal
While range, a large amount of water resource is saved, the first temperature sensor 5 and second temperature sensor 9 can be effectively to cavitys 2
Water temperature inside internal water and water feeding tank 6 is detected, if deviation occurs in the water temperature inside 2 internal water of cavity or water feeding tank 6
When, the first temperature sensor 5 or second temperature sensor 9 deliver a signal to controller 10, are carried out by controller 10 to electrothermal tube 8
Control can carry out lower water temperature operation by remote controler, make to control water temperature, and under the action of signal receiving module 11
With more convenient, the top of water feeding tank 6 is communicated with water injection pipe 12, and the top of water injection pipe 12 is provided with pipe close, can pass through water filling
Pipe 12 makes to keep sufficient inside water feeding tank 6 to 6 inside make-up water source of water feeding tank.
It is above-described, it is merely preferred embodiments of the present invention, but protection scope of the present invention is not limited to
This, anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention
And its inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of coal seam carbon dioxide injection tests permeability device, including simulation box (1), which is characterized in that the simulation box (1)
Inside offer cavity (2), the inner wall bottom of the cavity (2) is provided with water assembly (3), the upper water assembly (3)
Side runs through cavity (2) and extends to the outside of simulation box (1), is provided with outlet component at the top of the inner wall of the cavity (2)
(4), one end of the outlet component (4) runs through cavity (2) and extends to the outside of simulation box (1), the inner wall of the cavity (2)
It is provided with the first temperature sensor (5) being equally spaced, the side of the simulation box (1) is provided with water feeding tank (6), the water outlet
Component (4) is connected to water feeding tank (6), and the side lower end of the water feeding tank (6) is provided with charging pump (7), the charging pump (7) with
Upper water assembly (3) connection, the inner wall of the water feeding tank (6) are provided with electrothermal tube (8), and water feeding tank (6) are internally provided with
The side of second temperature sensor (9), the simulation box (1) is provided with controller (10), first temperature sensor (5) and
The output end of second temperature sensor (9) is electrically connected with the input terminal of controller (10), the charging pump (7) and electrothermal tube
(8) input terminal is electrically connected with the output end of controller (10).
2. a kind of coal seam carbon dioxide injection according to claim 1 tests permeability device, which is characterized in that the simulation
Hermatic door is provided at the top of case (1), the side of the hermatic door is provided with breather valve.
3. a kind of coal seam carbon dioxide injection according to claim 1 tests permeability device, which is characterized in that the upper water
Component (3) includes upper hose (31), and the two sides of the upper hose (31) are communicated with distributive pipe (32), the distributive pipe (32)
Top offer the tapping hole (33) being equally spaced.
4. a kind of coal seam carbon dioxide injection according to claim 1 tests permeability device, which is characterized in that the water outlet
Component (4) includes outlet pipe (41), and the bottom of the outlet pipe (41) is communicated with catchment covers (42).
5. a kind of coal seam carbon dioxide injection according to claim 1 tests permeability device, which is characterized in that the simulation
It is provided with signal receiving module (11) at the top of the inner wall of case (1), the signal receiving module (11) and controller (10) two-way electricity
Property connection, the signal receiving module (11) is connected with remote controler by mobile network's two-way signaling.
6. a kind of coal seam carbon dioxide injection according to claim 1 tests permeability device, which is characterized in that the water supply
It is communicated at the top of case (6) water injection pipe (12), and is provided with pipe close at the top of water injection pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910408473.8A CN110031378A (en) | 2019-05-16 | 2019-05-16 | A kind of coal seam carbon dioxide injection test permeability device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910408473.8A CN110031378A (en) | 2019-05-16 | 2019-05-16 | A kind of coal seam carbon dioxide injection test permeability device |
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| Publication Number | Publication Date |
|---|---|
| CN110031378A true CN110031378A (en) | 2019-07-19 |
Family
ID=67242432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910408473.8A Pending CN110031378A (en) | 2019-05-16 | 2019-05-16 | A kind of coal seam carbon dioxide injection test permeability device |
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| Country | Link |
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| CN (1) | CN110031378A (en) |
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| CN109540628A (en) * | 2018-12-29 | 2019-03-29 | 广州市中加环境检测技术有限公司 | A kind of functional universal sampling incubator |
| CN208794838U (en) * | 2018-08-31 | 2019-04-26 | 中国农业科学院农田灌溉研究所 | Irrigation water temperature control equipment and irrigation system |
-
2019
- 2019-05-16 CN CN201910408473.8A patent/CN110031378A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0221264A (en) * | 1988-07-09 | 1990-01-24 | Hitachi Ltd | Reaction temperature controller for automatic analyzer |
| CN105688775A (en) * | 2016-04-26 | 2016-06-22 | 河北工业大学 | Reactor with temperature control device |
| CN206160463U (en) * | 2016-11-03 | 2017-05-10 | 河南大张过滤设备有限公司 | Automatic insulation can of extrusion molding filter plate |
| CN208645644U (en) * | 2018-05-18 | 2019-03-26 | 北京金蝉科技有限公司 | The solidifying native test block maintenance device of one kind |
| CN208794838U (en) * | 2018-08-31 | 2019-04-26 | 中国农业科学院农田灌溉研究所 | Irrigation water temperature control equipment and irrigation system |
| CN109533691A (en) * | 2018-12-25 | 2019-03-29 | 泰州市科研精细化工有限公司 | A kind of surge tank that novel production imidazolyl ethanol uses |
| CN109540628A (en) * | 2018-12-29 | 2019-03-29 | 广州市中加环境检测技术有限公司 | A kind of functional universal sampling incubator |
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Application publication date: 20190719 |