CN209513686U - For surveying the thermal-insulating body structure of Equivalent Thermal Conductivities - Google Patents
For surveying the thermal-insulating body structure of Equivalent Thermal Conductivities Download PDFInfo
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- CN209513686U CN209513686U CN201822198282.7U CN201822198282U CN209513686U CN 209513686 U CN209513686 U CN 209513686U CN 201822198282 U CN201822198282 U CN 201822198282U CN 209513686 U CN209513686 U CN 209513686U
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Abstract
The utility model discloses the thermal-insulating body structures for surveying Equivalent Thermal Conductivities, heating and thermal insulation cabinet includes the tank wall and the horizontal insulation board for sealing tank wall from above and below that four blocks of side plates surround, four blocks of side plates include one group of heating plate being oppositely arranged and one group of vertical insulation board being oppositely arranged, and being equipped on vertical insulation board from a side surface to the perforation of another side surface can be rotated water service pipe；Heating electrode is all equipped in every piece of heating plate, heating plate is equipped with temperature sensor towards a side surface of heating and thermal insulation cabinet；The seepage flow through-hole of Single Fracture seepage flow plate in heating and thermal insulation cabinet is connected to the rotatable water service pipe fixation on vertical insulation board respectively, and the outer end of the rotatable water service pipe exposing heating and thermal insulation cabinet on one of them vertical insulation board is connected to by injection pipe with injection device.The utility model structure is simple, provides convenience for the Equivalent Thermal Conductivities under the variety classes of fluid, flow condition in research different substrates sillar, different cracks and crack.
Description
Technical field
It is specifically a kind of for surveying the thermal-insulating body knot of Equivalent Thermal Conductivities the utility model relates to a kind of body structure
Structure belongs to pit mining field.
Background technique
It is exploited deeply as east China and part middle part mine enter, faces Thief zone water pressure, high-ground stress, highland
The special exploitation condition of temperature, underground thermal pollution are increasingly severe.The reason of causing deep rock mass high temperature is not only due to geothermal gradient
Raising, since by mining influence, as shown in Figure 1, high-ground stress leads to rock mass fracture growth, Thief zone water pressure makes mine
Water is migrated along Fracture Networks, along with the migration of heat during this.The heat transfer modes of crack rock mainly include, 1. matrix rock
The heat transfer of block；2. the heat transfer of fluid and thermal convection in crack, because fluid thermal convection is related to water-rock interface pair in crack
The determination problem of the coefficient of heat transfer is flowed, convection transfer rate h is a dynamic value and the wide b of flow velocity v, gap, and the interface Shui Yan geometry is special
Sign, the thermophysical property etc. of water rock are related, are a complicated variables, do not have suitable empirical equation or really to the value of h at present
Fixed theory causes Flow In Jointed Rock Masses-heat transfer problem research to be got up more complex, can not grind for crack rock water-thermophoresis
Study carefully and provides fundamental basis.
Summary of the invention
In view of the above-mentioned problems of the prior art, the purpose of the utility model is to provide one kind for surveying equivalent thermally conductive system
Several thermal-insulating body structures, structure is simple, easy to operate, can be stream in research different substrates sillar, different cracks and crack
It is convenient that Equivalent Thermal Conductivities under the variety classes of body, flow condition provide.
It is a kind of for surveying the guarantor of Equivalent Thermal Conductivities that in order to achieve the above purposes, the technical solution adopted by the utility model is:
Warm body structure, including heating and thermal insulation cabinet, the heating and thermal insulation cabinet include the tank wall that four blocks of side plates surround and from top and
Lower section seals the horizontal insulation board of tank wall, and four blocks of side plates include one group of heating plate being oppositely arranged and one group be oppositely arranged
Vertical insulation board, being equipped on every piece of vertical insulation board from a side surface to the perforation of another side surface can be rotated water service pipe；Every piece adds
A heating electrode is all equipped on hot plate, the heating electrode is connected to regulated power supply, the heating plate by a temperature controller
Temperature sensor is equipped with towards a side surface of heating and thermal insulation cabinet；
Single Fracture seepage flow plate is equipped in heating and thermal insulation cabinet, the Single Fracture seepage flow plate includes heat-insulated ring body and covers from two sides
Cover the high thermal conductivity cover board of heat-insulated ring body, the heat-insulated ring body is by a pair of of the arc panel I and a pair of of arc panel that are oppositely arranged two-by-two
II surrounds, and every piece of arc panel I is equipped with seepage flow through-hole from cycle surface to the perforation of inner ring end face；Infiltration in two pieces of arc panels I
Heating and thermal insulation is protruded into water service pipe rotatable on two pieces of vertical insulation boards respectively in one end that recirculation hole exposes I cycle surface of arc panel
The fixed connection in inner end in cabinet, and the rotatable water service pipe on one of them vertical insulation board exposes the outer of heating and thermal insulation cabinet
End is connected to by injection pipe with an injection device.
The utility model, which can be rotated water service pipe and expose, is arranged with a positioning knob in the outer end circumferential direction of heating and thermal insulation cabinet, fixed
Position knob periphery is equipped with rotation angle graduation mark.Positioning knob facilitates gripping, observation rotation angle graduation mark while rotation
The rotational angle that Single Fracture seepage flow plate can accurately be adjusted facilitates experimenter that the angle of Single Fracture seepage flow plate and direction of heat flow is arranged,
The angle between Single Fracture seepage flow plate and direction of heat flow can be made adjustable within the scope of 0-360 ° by operating positioning knob.
Preferably, the arc panel I and arc panel II are polyfluortetraethylene plate, and adjacent arc panel I and arc panel II
The position of connection is equipped with connected structure, and the connected structure includes being respectively provided on arc panel I and arc panel II and can cooperating slotting
The two pieces of plugboards connect, the opposite contact surface of two pieces of plugboards are equipped with sealing strip.It is connected firmly, and sealed using connected structure
Property it is more preferable, allow hot-fluid transmission path be one of high thermal conductivity cover board, crevice water, another piece of high thermal conductivity cover board, prevent occur heat
The phenomenon that flowing " short circuit " guarantees that hot-fluid transmitting is normal.Polyfluortetraethylene plate has stronger stable heat-proof quality simultaneously.
It measures the distance between two high thermal conductivity cover boards and increases workload, and have certain error, therefore above-mentioned height is led
The heat insulation loop body side surface that the surface of hot cover board towards heat-insulated ring body side is preferably bonded with it is concordant, at this time the thickness of heat-insulated ring body
The Fracture Width parameter of the as width in crack, test is more accurate.
In above system, the high thermal conductivity cover board is circle, multiple spiral shells that the outer ring of high thermal conductivity cover board passes through distribution setting
Nail is fixed on heat-insulated ring body on the side of inner ring.After high thermal conductivity cover board is covered on the interior annular distance of heat-insulated ring body, multiple spiral shells
It follows closely the threaded hole on high thermal conductivity cover board outer ring and screws in heat-insulated ring body and fix high thermal conductivity cover board in the side of inner ring
It is fixed more firm in heat insulation loop body side surface.
Further, the surface that the high thermal conductivity cover board is in contact with heat-insulated ring body is equipped with sealing structure；The sealing
Structure can be sealing ring, and sealing ring is mounted on heat-insulated ring body in the mounting groove on the side of inner ring, is given by screw
After pretightning force, it is ensured that the mine water between two pieces of high thermal conductivity cover boards and heat-insulated ring body will not ooze out.
Preferably, the vertical insulation board and horizontal insulation board all include two layers of alumina silicate insulating layer and are folded in two layers of silicon
Carbon dioxide gas layer between sour aluminium insulating layer, carbon dioxide gas layer are connected to the injecting hole that insulation board outer surface is installed,
Carbon dioxide gas is injected into carbon dioxide gas layer by injecting hole.The thermal coefficient 0.035W/ of alumina silicate insulating layer
(mk), the thermal coefficient of carbon dioxide gas layer is 0.0137W/ (mk), and alumina silicate has stronger heat-insulating capability, and two
Carbon oxide gas belongs to greenhouse gases, has heat insulation function, avoids the heat loss of heating and thermal insulation box house to external action
The accuracy of experiment.
Preferably, the water service pipe that can be rotated is stereoplasm tube, and stereoplasm tube guarantees will not deformation occurs in rotary course, it is ensured that
Angle adjusts accurate.
Preferably, high thermal conductivity cover board can use the higher stainless steel material of thermal coefficient, can quickly conduct to heat.
When for measuring Equivalent Thermal Conductivities, the rotatable water service pipe on one of them vertical insulation board being exposed into heating and is protected
The outer end of incubator body is connected to by injection pipe with an injection device, and the rotatable water service pipe on another vertical insulation board, which exposes, to be added
The outer end of hot thermal-insulating body is connected to outside by an outlet pipe；In order to guarantee pressure stablize, on outlet pipe be equipped with counterbalance valve,
And the outer end of the rotatable water service pipe on two pieces of vertical insulation boards is respectively equipped with pressure sensor, the temperature sensor, pressure
Sensor is respectively electrically connected to data collector, and the detection data and real-time display for real-time reception to each detection part go out
Come.The distance between two pieces of high thermal conductivity cover board surfaces opposite to each other are Fracture Width b1, it is b for simulating Fracture Width1List
Fissured structure；The angle that can be rotated between water service pipe and Single Fracture seepage flow plate adjustment Single Fracture seepage flow plate and direction of heat flow is rotated,
For simulating practical crack angle；Add with matrix sillar there is the rock analog material of same porosity and thermal coefficient to be added
Inside hot thermal-insulating body, the horizontal insulation board lid conjunction of top is sealed on tank wall after filling up, opens regulated power supply, to heating electricity
Pole inputs high current, and heating electrode applies hot-fluid to heating plate respectively；Finally start injection device, the mine water for being a by pH value
With firm discharge through in the Single Fracture seepage flow plate in the vertical insulation board injection heating thermal-insulating body of not set counterbalance valve side, and
It is flowed out from the vertical insulation board in the other side, measures the temperature of the heat flow density and two pieces of heating plates in two pieces of heating plates respectively
Obtain Equivalent Thermal Conductivities.
Compared with the existing technology, the utility model has the advantage that
1. the utility model be make problem reduction, by the crack rock cellular construction extracted from crack rock be modeled as by
Matrix sillar with hole and Single Fracture are constituted, and the week of Single Fracture seepage flow plate is filled into rock equivalent material simulating matrix sillar
The Equivalent Thermal Conductivities test macro for having devised crack rock unit is enclosed, then by adjusting Single Fracture seepage flow plate and direction of heat flow
Angle, the Single Fracture of required angle can be simulated；
2. the body structure of the utility model is simple, the Heat preservation of heating and thermal insulation cabinet is functional.And Single Fracture seeps
The heat-insulated ring body of flowing plate is made of four pieces of arc panels, covers the seepage flow that simulation crack is formd after cover board, and when practical operation passes through
The arc board mold for making different-thickness, can be convenient the Single Fracture plate seepage flow for simulating different crack widths；In heat insulation loop body
Portion reserves seepage flow hole, facilitates the inflow and outflow of fluid.By being specifically designed to Single Fracture seepage flow plate, allow hot-fluid normal
It propagates, propagation path is cover board-fluid-cover board, avoids hot-fluid and " short circuit " phenomenon occurs.
3. the utility model is easy to operate, the Equivalent Thermal Conductivities under the conditions of seepage flow can be studied, different works can be simulated
The Equivalent Thermal Conductivities of crack rock unit under condition can analyze different porosities matrix sillar, difference after changing experimental condition
The Single Fracture distribution occasion of angle, different Fracture Widths, type of fluid in different cracks, fluid flow or pressure in different cracks
Equivalent Thermal Conductivities under gradient；Certain porosity matrix sillar can be studied using the device of the utility model and Single Fracture water seeps
The Equivalent Thermal Conductivities of crack rock unit under the conditions of stream, so that the research for entire crack rock water-thermophoresis is established
Basis.
Detailed description of the invention
Heat transfer schematic diagram of Fig. 1 mine water in Fracture Networks migration process；
Fig. 2 is the structural schematic diagram of the heating and thermal insulation cabinet of the utility model；
Fig. 3 is the side view of heating and thermal insulation cabinet；
Fig. 4 is the perspective view of heating and thermal insulation cabinet；
Fig. 5 is the cross-section structure of vertical insulation board and horizontal insulation board；
Fig. 6 is the three-dimensional structure diagram of arc panel I；
Fig. 7 is the A direction view of Fig. 6；
Fig. 8 is the schematic diagram that adjacent arc panel I is connect with arc panel II by connected structure；
Fig. 9 is that the connection that the utility model is applied in the Equivalent Thermal Conductivities test macro of crack rock cellular construction is shown
It is intended to；
Figure 10 is the schematic diagram of the double-piston container driving device in Fig. 9；
In figure, 1. constant pressure and flow twin cylinder pumps；2. cold water vessels；3. mine water container；4. topping-up pump；5. safety valve；61. the
One two-way piston cylinder；62. the second bidirectional piston cylinder；7. displacement sensor；8. protecting cabinet；
V1. the first switching valve；V2. the second switching valve；V3. third switching valve；V4. the 4th switching valve；V5. the 5th conversion
Valve；V6. the 6th switching valve；V7. the 7th switching valve；V8. the 8th switching valve；
9. heating and thermal insulation cabinet；9-1. heating plate, 9-1-1. heat electrode, 9-1-2. temperature sensor, and 9-2. is protected vertically
Warm plate, 9-2-1. can be rotated water service pipe, 9-2-2. positioning knob, the horizontal insulation board of 9-3., 91. alumina silicate insulating layers, 92. dioxies
Change carbon gas blanket, 93. injecting holes,
10. Single Fracture seepage flow plate；The heat-insulated ring body of 10-1., 10-1-1. arc panel I, 10-1-1a. seepage flow through-hole, 10-1-2.
Arc panel II, 10-2. high thermal conductivity cover board, 10-2-1. screw, 10-2-2. sealing structure, 10-2-2a. mounting groove, 11-1. grafting
Plate, 11-2. sealing strip,
12. pressure sensor；13. counterbalance valve；14. regulated power supply；15. temperature controller；16. liquid chromatograph；17. note
Enter pipe.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
It is a kind of for surveying the thermal-insulating body structure of Equivalent Thermal Conductivities, including heating and thermal insulation cabinet as shown in Fig. 2 to Figure 10
9, the heating and thermal insulation cabinet 9 includes the tank wall and the horizontal insulation board 9- for sealing tank wall from above and below that four blocks of side plates surround
3, four blocks of side plates include one group of heating plate 9-1 being oppositely arranged and one group of vertical insulation board 9-2 being oppositely arranged, and every piece perpendicular
Being equipped on straight insulation board 9-2 from a side surface to the perforation of another side surface can be rotated water service pipe 9-2-1；On every piece of heating plate 9-1
It is all equipped with heating an electrode 9-1-1, the heating electrode 9-1-1 and AC frequency conversion pressure stabilizing electricity is connected to by a temperature controller 15
Source 14, the heating plate 9-1 are equipped with temperature sensor 9-1-2 towards a side surface of heating and thermal insulation cabinet 9；
Single Fracture seepage flow plate 10 is equipped in heating and thermal insulation cabinet 9, the Single Fracture seepage flow plate 10 includes heat-insulated ring body 10-1
With covered from two sides high thermal conductivity the cover board 10-2, the heat-insulated ring body 10-1 of heat-insulated ring body 10-1 by be oppositely arranged two-by-two one
I 10-1-1 of arc panel and a pair of II 10-1-2 of arc panel are surrounded, every piece of I 10-1-1 of arc panel is from cycle surface to inner ring end face
Perforation is equipped with seepage flow through-hole 10-1-1a；Seepage flow through-hole 10-1-1a in two pieces of arc panels, I 10-1-1 exposes arc panel I
Heater incubator is protruded into water service pipe 9-2-1 rotatable on two pieces of vertical insulation board 9-2 respectively in one end of 10-1-1 cycle surface
The fixed connection in inner end in body 9, and the rotatable water service pipe 9-2-1 on one of them vertical insulation board 9-2 exposes heating and thermal insulation
The outer end of cabinet 9 is connected to by injection pipe 17 with an injection device.
The utility model can be rotated water service pipe 9-2-1 expose heating and thermal insulation cabinet 9 outer end circumferential direction on be arranged with a positioning
Knob 9-2-2, the periphery positioning knob 9-2-2 are equipped with rotation angle graduation mark.Positioning knob 9-2-2 facilitates gripping, rotation
The rotational angle of Single Fracture seepage flow plate 10 can accurately be adjusted by observing rotation angle graduation mark simultaneously, facilitate experimenter that Single Fracture is arranged
The angle of seepage flow plate 10 and direction of heat flow can make Single Fracture seepage flow plate 10 and hot-fluid side by operating positioning knob 9-2-2
Angle between is adjustable within the scope of 0 ° -360 °.
Preferably, I 10-1-1 of arc panel and II 10-1-2 of arc panel is polyfluortetraethylene plate, and adjacent arc panel
The position that I 10-1-1 is connected with II 10-1-2 of arc panel is equipped with connected structure, and the connected structure includes being respectively provided at arc panel I
On II 10-1-2 of 10-1-1 and arc panel and two pieces of plugboard 11-1 of grafting, two pieces of plugboard 11-1 opposite contact can be cooperated
Face is equipped with sealing strip 11-2.It is connected firmly using connected structure, and better tightness, hot-fluid transmission path is allowed to be one of
High thermal conductivity cover board 10-2, crevice water, another piece of high thermal conductivity cover board 10-2 prevent the phenomenon that hot-fluid " short circuit " occur, guarantee hot-fluid
Transmitting is normal.Polyfluortetraethylene plate has stronger stable heat-proof quality.
It measures the distance between two high thermal conductivity cover board 10-2 and increases workload, and have certain error, therefore above-mentioned
The side heat-insulated ring body 10-1 that the surface of high thermal conductivity cover board 10-2 towards the side heat-insulated ring body 10-1 is preferably bonded with it is concordant.This
When heat-insulated ring body 10-1 thickness be crack width, the Fracture Width parameter of test is more accurate.
In above system, the high thermal conductivity cover board 10-2 is circle, and the outer ring of high thermal conductivity cover board 10-2 passes through distribution setting
Multiple screw 10-2-1 be fixed on heat-insulated ring body 10-1 on the side of inner ring.High thermal conductivity cover board 10-2 is covered on heat insulation loop
After on the interior annular distance of body 10-1, multiple screw 10-2-1 pass through the threaded hole on the outer ring high thermal conductivity cover board 10-2 and screw in heat insulation loop
High thermal conductivity cover board 10-2 is fixed on the side heat-insulated ring body 10-1 in the side of inner ring by body 10-1, fixed more firm.
Further, the surface that the high thermal conductivity cover board 10-2 is in contact with heat-insulated ring body 10-1 is equipped with sealing structure
10-2-2；The sealing structure 10-2-2 can be sealing ring, and sealing ring is mounted on heat-insulated ring body 10-1 close to the side of inner ring
On mounting groove 10-2-2a in, after giving pretightning force by screw 10-2-1, it is ensured that two pieces of high thermal conductivity cover board 10-2 with every
Mine water between hot ring body 10-1 will not ooze out.
Preferably, the vertical insulation board 9-2 and horizontal insulation board 9-3 all includes two layers of alumina silicate insulating layer 91 and sandwiched
Carbon dioxide gas layer 92 between two layers of alumina silicate insulating layer 91, carbon dioxide gas layer 92 and insulation board outer surface are installed
Injecting hole 93 be connected to, carbon dioxide gas is injected into carbon dioxide gas layer 92 by injecting hole 93.Alumina silicate insulating layer
91 thermal coefficient 0.035W/ (mk), the thermal coefficient of carbon dioxide gas layer 92 are 0.0137W/ (mk).Alumina silicate tool
There is stronger heat-insulating capability, and carbon dioxide gas belongs to greenhouse gases, there is heat insulation function, avoid in heating and thermal insulation cabinet 9
The accuracy that the heat loss in portion is tested to external action.Further, the outermost layer of vertical insulation board 9-2 can also be arranged
One layer of support structure layers, for promoting the supporting degree and stability of vertical insulation board 9-2, guarantee test is normally carried out；And
It can be with aperture for being caught in positioning knob 9-2-2, the rotation of experimenter original place around rotatably water service pipe 9-2-1 among support structure layers
It, can be directly by positioning knob 9-2-2 along can after dynamic positioning knob 9-2-2 adjusts the angle of Single Fracture seepage flow plate 10 and direction of heat flow
It rotates the direction of axis line movement of water service pipe 9-2-1 and is embedded in the aperture among support structure layers, at this time positioning knob 9-2-2
It is fixed, the Single Fracture seepage flow plate 10 after guaranteeing adjusting angle during the test stablize by orientation angle.
Preferably, the water service pipe 9-2-1 that can be rotated is stereoplasm tube, and stereoplasm tube guarantees that shape will not occur in rotary course
Become, it is ensured that angle adjusts accurate.
Preferably, high thermal conductivity cover board 10-2 can use the higher stainless steel material of thermal coefficient, can be quick to heat
Conduction.
When for measuring Equivalent Thermal Conductivities, the rotatable water service pipe 9-2-1 on one of them vertical insulation board 9-2 is revealed
The outer end of heating and thermal insulation cabinet 9 is connected to by injection pipe 17 with an injection device out, is turned on another vertical insulation board 9-2
The outer end that dynamic water service pipe 9-2-1 exposes heating and thermal insulation cabinet 9 is connected to outside by an outlet pipe；In order to guarantee that pressure is stablized,
Counterbalance valve 13 is equipped on outlet pipe, and the outer end of the rotatable water service pipe 9-2-1 on two pieces of vertical insulation board 9-2 is respectively equipped with
Pressure sensor 12, the temperature sensor 9-1-2, pressure sensor 12 are respectively electrically connected to a data collector, use
Data collector can select the PCI720 type collector of Advantech, can real-time reception to each detection part detection data
And real-time display comes out.
Illustrate the specific implementation process of the utility model by taking certain mine as an example below.Certain mine is domestic typical High-geotemperature mine
Well, most large mining depth -1010m, geothermal gradient are 3.24 DEG C/100m, and 46.8 DEG C of the horizontal rock temperature of -980m is high according to geologic prospect
Deep layer heat is substituted into mine the reason is that Ordovician karst water gushes along tomography by temperature, in order to study the thermo parameters method situation of the mine, it is necessary to
Crevice water is studied to the migration feature of heat, is facilitated in order to which numerical simulation models, the thermal coefficient of entire crack country rock is equivalent
It is worth for one, the Equivalent Thermal Conductivities of crack element is studied by the device of the utility model.
The mine water that fracture seepage in mine to be studied goes out is collected, is added in injection device, to country rock rock
Stone samples to obtain matrix sillar, and rock sample is processed as 10mm*10mm*1mm thin slice, measures the rock in the use for laboratory laser method of shining
Thermal coefficient, the results showed that, the mine country rock be sandstone, thermal coefficient be 2.5W/ (mK), since the rock sample of measurement is smaller,
The thermal coefficient for being approximately considered the mine sandstone matrix is 2.5W/ (mK)；Measurement obtains the porosity Φ of matrix sillar1。
I 10-1-1 of a pair of of arc panel being oppositely arranged two-by-two and a pair of II 10-1-2 of arc panel are assembled into heat-insulated ring body
After 10-1, then two pieces of high thermal conductivity cover board 10-2 are covered each by heat-insulated ring body 10-1 from two sides and are fastened on heat-insulated ring body 10-1
Upper composition Single Fracture seepage flow plate 10, the distance between two pieces of high thermal conductivity cover board 10-2 surfaces opposite to each other are Fracture Width b1,
It is b for simulating Fracture Width1Simple check gap structure；Single Fracture seepage flow plate 10 is placed in inside heating and thermal insulation cabinet 9, and makes two
One end that seepage flow through-hole 10-1-1a in I 10-1-1 of block arc panel exposes I 10-1-1 cycle surface of arc panel is perpendicular with two pieces respectively
It can be rotated the inner end connection that water service pipe 9-2-1 protrudes into heating and thermal insulation cabinet 9 on straight insulation board 9-2；
It rotates and can be rotated water service pipe 9-2-1 and Single Fracture seepage flow plate 10, it will be between Single Fracture seepage flow plate 10 and direction of heat flow
Angle be adjusted to 135 °, be 135 ° of simple check gap structure for simulating crack angle；There to be same porosity with matrix sillar
It is added inside heating and thermal insulation cabinet 9 with the rock analog material of thermal coefficient, the horizontal insulation board 9-3 of top is covered after filling up and is closed
Be sealed on tank wall, by injecting hole 93 to horizontal insulation board 9-3, vertical insulation board 9-2 carbon dioxide gas layer 92 in infuse
Enter the carbon dioxide gas of purity 99%；
Regulated power supply 14 is opened, high current is inputted to heating electrode 9-1-1, heats electrode 9-1-1 respectively to heating plate 9-1
Apply hot-fluid, heat flow density is respectively q1And q2, unit W/m2；
Start injection device, the mine water that pH value is a is passed through into injection pipe 17 through not set counterbalance valve 13 1 with flow Q1
In Single Fracture seepage flow plate 10 in the vertical insulation board 9-2 injection heating thermal-insulating body 9 of side, and from the vertical insulation board 9- in the other side
It is flowed out in 2, setting 13 pressure of counterbalance valve is P2, then the pressure that the pressure sensor 12 of outlet pipe side detects is P2, injection
The pressure that the pressure sensor 12 of 17 side of pipe detects is P1, and liquid chromatograph 16 detects the acidity-basicity ph value a, miscellaneous of mine water
Matter ingredient and content；Temperature sensor 9-1-2 measures the temperature of two pieces of heating plate 9-1 respectively, after temperature is constant, records two pieces
The temperature of heating plate 9-1 is respectively T1And T2；
The porosity Φ in matrix sillar is obtained by calculation1, Fracture Width b1, 135 ° of crack angle, mine water ph value be
A, crack water flow is the Equivalent Thermal Conductivities of the crack element under the conditions of Q1 are as follows:
In above formula, λ is Equivalent Thermal Conductivities, W/ (mK)；q1、q2Heat flow density on respectively two pieces of heating plate 9-1,
The as heat flow density at hot-fluid both ends when heat transfer；W/m2；T1、T2The temperature of respectively two pieces heating plate 9-1 is hot-fluid when heat transfer
The mean temperature at both ends, K；L is the distance between two pieces of heating plate 9-1 surfaces opposite to each other, m；
Change different condition, such as different porosities Φ1The rock analog material of matrix sillar, different Fracture Widths are split
Clearance angle degree, the mine water of different PH, crack water flow or barometric gradient can study the crack rock under various different operating conditions
The Equivalent Thermal Conductivities of cellular construction.
Space filling rock inside the entire heating and thermal insulation cabinet 9 of the utility model in addition to Single Fracture seepage flow plate 10 is similar
Material, for simulating the matrix sillar with certain porosity and thermal coefficient to be studied.The rock analog material of use can
To be formulated using existing material, the material prepared its with matrix sillar thermal coefficient having the same and hole
Rate is equivalent to matrix sillar to be studied after filling.PFC porosity computing module can also be used, by specific porosity, is added
In the volume input PFC porosity computing module of hot thermal-insulating body 9, PFC porosity computing module, that is, analog obtains required
The grain diameter and amounts of particles of analog material, remix be added conductive powder make the thermal coefficient of mixture rock analog material with
Matrix sillar is the same, and wherein the additive amount of conductive powder can directly be simulated with comsol software and be obtained.In above process in order to
Simulation obtains the matrix sillar of different porosities, by matrix sillar by a certain amount of conductive powder of the similar material mixture ratio of thermal coefficient
Substitution obtains the rock analog material of different porosities under the conditions of nature stacks, is filled out in conjunction with the grain diameter of control material
It is charged to around Single Fracture seepage flow plate 10, crack rock cellular construction can be simulated.
Since mine water is the mixture of complicated component, pH value is different and with impurity, directly with common water filling device
Injection is likely to result in the corrosion of water filling device internal precision device or abrasion, reduces the service life, and with common water filling device
Water filling is difficult to ensure the steady of water supply flow and pressure of supply water.It is therefore preferred that above-mentioned injection device may include liquid constant pressure
Constant current high-precision injected system and double-piston container driving device,
Wherein the liquid constant pressure constant current high-precision injected system includes constant pressure and flow twin cylinder pump 1 and is connected to constant pressure and flow
Cold water vessels 2 on 1 entrance of twin cylinder pump；
The double-piston container driving device includes the first bidirectional piston cylinder 61 being located in a protection cabinet 8 side by side and
Two bidirectional piston cylinders 62, the open at one end of the first bidirectional piston cylinder 61 are respectively connected to one first conversion by waterline
One end of valve V1, one second switching valve V2, the other end of the second switching valve V2 are connected to atmosphere, the second bidirectional piston cylinder 62
One end open at one end that a third switching valve V3, one the 4th switching valve V4 are respectively connected to by waterline, third conversion
The other end of valve V3 is connected to atmosphere, and the other end of the first switching valve V1, the other end of the 4th switching valve V4 pass through waterline
It is commonly connected to the outlet of constant pressure and flow twin cylinder pump 1；Another end opening of the first bidirectional piston cylinder 61 passes through waterline
It is respectively connected to one end of one the 5th switching valve V5, one the 6th switching valve V6, another end opening of the second bidirectional piston cylinder 62 is logical
Cross one end that waterline is respectively connected to one the 7th switching valve V7, one the 8th switching valve V8, the 6th switching valve V6, the 7th conversion
The other end of valve V7 is commonly connected to the pump discharge of a topping-up pump 4, the pump intake of topping-up pump 4 and a mine water by waterline
Container 3 connects；5th switching valve V5, the 8th switching valve V8 the other end connect commonly through injection pipe 17 and heating and thermal insulation cabinet 9
It connects.
It further, further include a controller, outside the first bidirectional piston cylinder 61, the second bidirectional piston cylinder 62 respectively
Equipped with a displacement sensor 7, the first bidirectional piston cylinder 61, the second bidirectional piston cylinder 62 piston be respectively connected to corresponding displacement
Sensor 7, institute's displacement sensors 7 are connect with the input terminal of controller, and the output end of controller is connect with each switching valve respectively,
Each switching valve is electromagnetic valve at this time.Displacement sensor 7 can learn the first bidirectional piston cylinder 61, the second bidirectional piston cylinder in real time
The position of piston in 62, and position signal is transmitted to controller, controller control the opening and closing of each switching valve to control the
The alternating fluid infusion and water filling of one two-way piston cylinder 61, the second bidirectional piston cylinder 62.
The concrete operations of above-mentioned injection device include the following steps:
1. the fliud flushing stage: the 6th switching valve V6 of control, the 7th switching valve V7, the second switching valve V2, third switching valve V3 are beaten
It opens, remaining switching valve is closed, and is opened topping-up pump 4 for the mine water in mine water container 3 and is pumped into the first bidirectional piston cylinder 61 and the
In two bidirectional piston cylinders 62, mine water will push piston movement and enter the first bidirectional piston cylinder 61 and the second bidirectional piston at this time
In cylinder 62, the shift position signal of piston can be collected by displacement sensor 7 and be transmitted to controller, and controller is believed according to position
When number judging that fliud flushing is completed, the 7th switching valve V7, third switching valve V3 are closed；
2. start constant pressure and flow twin cylinder pump 1, the water in cold water vessels 2 is double by waterline injection with constant flow
Piston container driving device；
3. the 4th switching valve V4, the 8th switching valve V8 are opened in control, constant pressure and flow twin cylinder pump 1 injects cold water reverse push at this time
It moves the piston in the second bidirectional piston cylinder 62, mine water therein be injected into heating and thermal insulation cabinet 9, the first two-way work at this time
Plug cylinder 61 is waited for；
4. controller judges the second two-way work according to the displacement signal that the displacement sensor 7 of the second bidirectional piston cylinder 62 detects
After the completion of plug cylinder 62 is filled the water to heating and thermal insulation cabinet 9, the 4th switching valve V4, the 8th switching valve V8, the second switching valve V2, the are closed
Six switching valve V6 open third switching valve V3, the 7th switching valve V7, the first switching valve V1, the 5th switching valve V5, at this time mine water
It will push piston movement and enter in the second bidirectional piston cylinder 62, supplement mine water for the second bidirectional piston cylinder 62, at the same time
Constant pressure and flow twin cylinder pump 1 drives cold water to continue the mine water in the first bidirectional piston cylinder 61 in injection heating thermal-insulating body 9, control
The speed of system supplement mine water is greater than the speed that fills the water backward, i.e. the process of the supplement mine water of the second bidirectional piston cylinder 62 prior to
The process that first bidirectional piston cylinder 61 is filled the water to heating and thermal insulation cabinet 9 is completed；
5. the second bidirectional piston cylinder 62 supplements standby immediately, 61 note of the first bidirectional piston cylinder after the completion of mine water
The second bidirectional piston cylinder 62 is utilized to fill the water after the completion of water, so alternately injection guarantees stable top-up injection.
It, can be by pure matter cold water and impure mine moisture using double-piston container driving device by aforesaid operations
It opens, high-precision constant pressure and flow twin cylinder pump can be effectively protected not by the abrasion or corrosion of mine impurities in water；And bidirectional piston cylinder
Alternately smooth working eliminates pulse also to provide stable water flow with water installations, can be continuously and smoothly with fixed flow
Liquid is injected into heating and thermal insulation cabinet 9 with pressure, control is accurate, improves the reliability of experiment.
Further, liquid chromatograph 16 is equipped between above-mentioned topping-up pump 4 and safety valve 5, it can using liquid chromatograph 16
With parameters such as acidity-basicity ph value, the impurity contents of analyzing mine water in real time.
The outlet pipe of the utility model heating and thermal insulation cabinet 9 is connected to mine water container 3, from heating and thermal insulation cabinet 9
The water that Single Fracture seepage flow plate 10 flows out, which can enter in mine water container 3, to be recycled.
When the water flow temperature of needs holding injection Single Fracture seepage flow plate 10 is constant, protection cabinet 8 can also be added using electric
Heat guarantees internal environment constant temperature, it is ensured that the mine coolant-temperature gage exported from protection cabinet 8 is constant, meets the uniqueness of fixed water temperature
Experiment demand.
Claims (9)
1. a kind of for surveying the thermal-insulating body structure of Equivalent Thermal Conductivities, which is characterized in that including heating and thermal insulation cabinet (9), institute
Stating heating and thermal insulation cabinet (9) includes the tank wall and the horizontal insulation board (9- for sealing tank wall from above and below that four blocks of side plates surround
3), four blocks of side plates include one group of heating plate (9-1) being oppositely arranged and one group of vertical insulation board (9-2) being oppositely arranged,
Being equipped on every piece of vertical insulation board (9-2) from a side surface to the perforation of another side surface can be rotated water service pipe (9-2-1)；Every piece adds
Heating electrode (9-1-1) is all equipped on hot plate (9-1), the heating electrode (9-1-1) is connected by a temperature controller (15)
It is connected to regulated power supply (14), the heating plate (9-1) is equipped with temperature sensor towards a side surface of heating and thermal insulation cabinet (9)
(9-1-2)；
Single Fracture seepage flow plate (10) is equipped in heating and thermal insulation cabinet (9), the Single Fracture seepage flow plate (10) includes heat-insulated ring body
(10-1) and the high thermal conductivity cover board (10-2) that heat-insulated ring body (10-1) is covered from two sides, the heat-insulated ring body (10-1) is by two-by-two
A pair of of arc panel I (10-1-1) for being oppositely arranged and a pair of of arc panel II (10-1-2) surround, every piece of arc panel I (10-1-1) from
Cycle surface is equipped with seepage flow through-hole (10-1-1a) to the perforation of inner ring end face；Seepage flow in two pieces of arc panels I (10-1-1) is logical
One end that arc panel I (10-1-1) cycle surface is exposed in hole (10-1-1a) can be rotated on two pieces of vertical insulation boards (9-2) respectively
Water service pipe (9-2-1) protrudes into the fixed connection in the inner end in heating and thermal insulation cabinet (9), and on one of them vertical insulation board (9-2)
Rotatable water service pipe (9-2-1) expose heating and thermal insulation cabinet (9) outer end be connected to an injection device.
2. according to claim 1 for surveying the thermal-insulating body structure of Equivalent Thermal Conductivities, which is characterized in that rotatably logical
A positioning knob (9-2-2), positioning knob (9- are arranged in the outer end circumferential direction of water pipe (9-2-1) exposing heating and thermal insulation cabinet (9)
2-2) periphery is equipped with rotation angle graduation mark.
3. according to claim 1 or 2 for surveying the thermal-insulating body structure of Equivalent Thermal Conductivities, which is characterized in that described
Arc panel I (10-1-1) and arc panel II (10-1-2) are polyfluortetraethylene plate, and adjacent arc panel I (10-1-1) and arc
Plate II (10-1-2) connection position be equipped with connected structure, the connected structure include be respectively provided at arc panel I (10-1-1) and
On arc panel II (10-1-2) and two pieces of plugboards (11-1) of grafting, the opposite contact surface of two pieces of plugboards (11-1) can be cooperated
It is equipped with sealing strip (11-2).
4. according to claim 1 or 2 for surveying the thermal-insulating body structure of Equivalent Thermal Conductivities, which is characterized in that described
Side heat-insulated ring body (10-1) that the surface of high thermal conductivity cover board (10-2) towards the side heat-insulated ring body (10-1) is bonded with it is concordant.
5. according to claim 1 or 2 for surveying the thermal-insulating body structure of Equivalent Thermal Conductivities, which is characterized in that described
High thermal conductivity cover board (10-2) is circle, and the outer ring of high thermal conductivity cover board (10-2) is solid by multiple screws (10-2-1) of distribution setting
Heat-insulated ring body (10-1) is scheduled on the side of inner ring.
6. according to claim 5 for surveying the thermal-insulating body structure of Equivalent Thermal Conductivities, which is characterized in that the height is led
The surface that hot cover board (10-2) is in contact with heat-insulated ring body (10-1) is equipped with sealing structure (10-2-2)；The sealing structure
(10-2-2) is sealing ring, and sealing ring is mounted on the mounting groove (10-2-2a) of heat-insulated ring body (10-1) on the side of inner ring
In.
7. according to claim 1 or 2 for surveying the thermal-insulating body structure of Equivalent Thermal Conductivities, which is characterized in that described
Vertical insulation board (9-2) and horizontal insulation board (9-3) all include two layers of alumina silicate insulating layer (91) and are folded in two layers of alumina silicate
Carbon dioxide gas layer (92) between insulating layer (91), the gas injection of carbon dioxide gas layer (92) and the installation of insulation board outer surface
Hole (93) connection injects carbon dioxide gas into carbon dioxide gas layer (92) by injecting hole (93).
8. according to claim 1 or 2 for surveying the thermal-insulating body structure of Equivalent Thermal Conductivities, which is characterized in that described
Can be rotated water service pipe (9-2-1) is stereoplasm tube.
9. according to claim 1 or 2 for surveying the thermal-insulating body structure of Equivalent Thermal Conductivities, which is characterized in that described
High thermal conductivity cover board (10-2) is stainless steel plate.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702440A (en) * | 2021-09-13 | 2021-11-26 | 南京大学 | Method for monitoring growth state of internal cracks of soil body |
| CN115306374A (en) * | 2022-08-08 | 2022-11-08 | 中国矿业大学(北京) | Visual simulation experiment device of controllable exploitation of temperature |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702440A (en) * | 2021-09-13 | 2021-11-26 | 南京大学 | Method for monitoring growth state of internal cracks of soil body |
| CN115306374A (en) * | 2022-08-08 | 2022-11-08 | 中国矿业大学(北京) | Visual simulation experiment device of controllable exploitation of temperature |
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