CN207992098U - A kind of cold area's short tunnel inlet cooling rating model - Google Patents
A kind of cold area's short tunnel inlet cooling rating model Download PDFInfo
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- CN207992098U CN207992098U CN201721250885.6U CN201721250885U CN207992098U CN 207992098 U CN207992098 U CN 207992098U CN 201721250885 U CN201721250885 U CN 201721250885U CN 207992098 U CN207992098 U CN 207992098U
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Abstract
The utility model discloses a kind of cold area's short tunnel inlet cooling rating models, are related to indoor model test technical field.The test model includes model babinet, tunnel model, simulation air flow system, measures sensor-based system and simulation tunnel piercing system.The beneficial effects of the utility model are：The utility model can simulate the specific environment of the short span tunnel portal in cold area, with strong points, and can carry out the tunnel cooling test under different air velocities, different initial temperatures, device simple installation, convenient to carry out, measuring accuracy is higher, and the design for area short tunnel tunnel of trembling with fear provides foundation.
Description
Technical field
The utility model relates generally to indoor model test technical field, and specifically a kind of cold area's short tunnel inlet cooling is surveyed
Cover half type.
Background technology
Wide in region according to statistics, the various China of landform shares the territory of more than half and belongs to Han Qu, Han Qu
Refer to that the year depth of freezing of topsoil is more than the area of 800mm, includes mainly two type of Permafrost Area and seasonal frozen soil region
Type accounts for the 20% and 55% of national territorial area respectively, and western and the Northeast is greatly distributed across in these areas.By
In building for cold area's railway, understanding of the people to cold regions engineering has been greatly accelerated, but this kind of tunnel is easier summer temp occur
Lining cracks, peeling, railway roadbed emit a series of diseases such as water and ponding when raising.
Before Tunnel Design, when needing to measure the specific environment summer of tunnel place Han Qu under difference gas flow temperature in tunnel
Tunnel inner wall temperature rise curve under temperature variation curve and different ground temperature, thus to build the temperature in tunnel under the conditions of tunnel in cold area frozen soil
Offer foundation is tested and studied to the Permafrost thermal stability of the behavior of degree mechanism and tunnel surrounding.Currently, relevant cold area's tunnel
Road cools down, and simulation test device is complicated, and volume is larger, cumbersome, although mould can be carried out to tunnel and insulation construction
Quasi- but ineffective for the temperature boundary control in complex environment under multifactor impact, specific aim is poor, cannot effectively reproduce cold area's tunnel
The true specific environment in road, experimental results error are big.
Utility model content
To solve the deficiencies in the prior art, the utility model combination prior art provides one kind from practical application
Specifically for cold area's short tunnel portal environment Xia Han area's short tunnel inlet cooling rating models and its test method, it not only may be used
It is with strong points to simulate the specific environment for the short span tunnel portal in area of trembling with fear, and it is initial to carry out different air velocities, difference
At a temperature of tunnel cooling test, device simple installation, measuring accuracy are higher.
The utility model to achieve the above object, is achieved through the following technical solutions：
A kind of cold area's short tunnel inlet cooling rating model, including model babinet, tunnel model, simulation air flow system, survey
Sensor-based system and simulation tunnel piercing system are measured, tunnel model is set in the model casing body, the tunnel model includes tunnel
The end of wall, the tunnel wall is fixedly connected with model wall box, is formed between the model wall box and tunnel inner wall
Tunnel, the measurement sensor-based system include the first temperature sensor, display and power supply, and first temperature sensor is
Multiple, multiple first temperature sensors are located at tunnel portal along the cross-section EDS maps of tunnel wall, first temperature sensor
At position, the simulation tunnel piercing system includes heat-insulating shield, and the heat-insulating shield is adapted with tunnel wall inner wall, the heat-insulating shield
Upper setting transmission rod, is arranged through-hole on the model wall box, and it is external that described transmission rod one end across through-hole is located at model casing
Portion, the heat-insulating shield are slided by transmission rod and model wall box, and tunnel model air guide is arranged on the model wall box
Pipe, tunnel model gas-guide tube one end are connected with simulation air flow system, and rock-soil material is filled in the model casing body, described
Rock-soil material is centered around on tunnel wall outer wall.
This rating model further includes ground temperature simulation system, and the ground temperature simulation system is located at model babinet bottom wall position,
Cavity is set inside the model babinet bottom wall, and the model babinet bottom wall side setting ground temperature cryostat entrance and ground temperature cryostat go out
Mouthful, the ground temperature cryostat entrance and ground temperature cryostat outlet are communicated with cavity.
Air guide head piece is arranged in the tunnel model entrance, and the air guide head piece is the small special-shaped mouth of outer imperial palace, in horn-like,
First temperature sensor is located at the link position of air guide head piece and tunnel conventional mouth.
The simulation air flow system includes air pump, and the first air pump gas-guide tube, first air pump is arranged in the air pump side
Heat sink is arranged in gas-guide tube side, and the second air pump gas-guide tube, the second air pump gas-guide tube is arranged in the heat sink side
It is connected with tunnel model gas-guide tube.
First temperature sensor transversely with longitudinally disposed several second temperature sensors.
The transmission rod is threaded rod, is threadedly coupled between the transmission rod and heat-insulating shield.
The heat-insulating shield is the Rigid foam polyurethane that adiabatic tinfoil is wrapped up on surface.
The model babinet is see-through model babinet.
Gas pump meter is set on the first air pump gas-guide tube, valve is set on the second air pump guide pipeline.
The prior art is compared, the utility model has the beneficial effects that：
1, the utility model can simulate the specific environment of the short span tunnel portal in cold area, with strong points, and can be into
Tunnel cooling test under the different air velocities of row, different initial temperatures, device simple installation is convenient to carry out, measuring accuracy compared with
Height, the design for area short tunnel tunnel of trembling with fear provide foundation.
2, the setting of ground temperature simulation system so that model is more nearly true tunnel environment, and can be to ground temperature
It is adjusted control, to improve flexibility, specific aim and the authenticity of test.
3, air guide head piece is designed using the principle of gas compression cooling, can be played the role of Physical temperature-lowering, be improved model
The flexibility of control and regulation and diversity.
4, air flow system is simulated in the utility model and air-flow is manufactured by air pump, cooperate to air-flow with heat sink
Temperature is adjusted, small, reasonable for structure, optimizes the test of model.
5, second temperature sensor is convenient for the temperature conditions of testing tunnel model ambient enviroment, more objectively reaction Han Qu
The rule that tunnel is influenced by temperature.
6, transmission rod is threadedly coupled with heat-insulating shield, convenient for adjusting the position of heat-insulating shield, is more stablized after so that heat-insulating shield is fixed,
It is not easy to loosen.
7, heat-insulating shield is the Rigid foam polyurethane that adiabatic tinfoil is wrapped up on surface, improve heat-insulating shield heat insulation and with
The compactness of tunnel wall inner wall fitting.
8, see-through model babinet is convenient for being observed and adjusted to model box house, improve device use it is convenient
Property.
9, gas pump meter on the first air pump gas-guide tube is set, valve is set on the second air pump guide pipeline, convenient for gas
The air-flow that pump generates is controlled, and the flexibility that device uses is improved.
Description of the drawings
Attached drawing 1 is the utility model model babinet overall structure diagram；
Attached drawing 2 is the utility model use state reference chart；
Attached drawing 3 is the portions the utility model I enlarged drawing；
Attached drawing 4 is cooling variation and time history in the air-flow tunnel of the utility model different temperatures.
Label shown in attached drawing：1, model babinet；2, tunnel model；3, air flow system is simulated；4, sensor-based system is measured；5、
Simulate tunnel piercing system；201, tunnel wall；401, the first temperature sensor；501, heat-insulating shield；502, transmission rod；6, tunnel mould
Type gas-guide tube；7, rock-soil material；8, ground temperature simulation system；801, ground temperature cryostat entrance；802, ground temperature cryostat exports；9, air guide
Head piece；301, air pump；302, the first air pump gas-guide tube；303, heat sink；304, the second air pump gas-guide tube；402, second temperature
Sensor.
Specific implementation mode
With reference to the drawings and specific embodiments, the utility model is described in further detail.It should be understood that these embodiments are only used for
Illustrate the utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, having read the utility model instruction
Content after, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms are equally fallen
In range defined herein.It should be noted that word used in the following description it is inner and outer refer respectively to towards or
Direction far from babinet model center.
A kind of cold area's short tunnel inlet cooling rating model, including model babinet 1, tunnel model 2, simulation air flow system 3,
Sensor-based system 4 and simulation tunnel piercing system 5 are measured, is provided according to the prior art, short tunnel refers to the tunnel that length is less than 500 meters
Road, the rating model in the utility model is designed and produced for short tunnel, is suitable for the test of cold area's short tunnel.It is described
Tunnel model 2 is set in model babinet 1, and the tunnel model 2 includes tunnel wall 201, the end of the tunnel wall 201 and model
1 side wall of babinet is fixedly connected, and tunnel is formed between 1 side wall of model babinet and tunnel inner wall, as shown in Fig. 1, tunnel mould
Type is made of tunnel wall and tunnel, and the shape of tunnel wall is identical as actual tunnel, domed.The measurement sensor-based system 4 includes
First temperature sensor 401, display (not shown) and power supply (not shown) are surveyed in the present invention
Amount sensor-based system measured using existing temperature sensor measurement system, by power supply for sensor run provide it is dynamic
Power, and the results are shown on display.First temperature sensor 401 is multiple, multiple first temperature sensors
401 are located at along 201 cross-section EDS maps of tunnel wall, first temperature sensor 401 at tunnel portal position, the simulation tunnel
Driving system 5 includes heat-insulating shield 501, and the heat-insulating shield 501 is adapted with 201 inner wall of tunnel wall, as shown in Fig. 1, heat-insulating shield
For semicircle, it is adapted with the arcuate in shape of tunnel inner wall, heat-insulating shield will be accomplished with tunnel wall inner wall seamless applying when in use.
Transmission rod 502 is set on the heat-insulating shield 501, through-hole is set on 1 side wall of model babinet, 502 one end of the transmission rod is worn
It crosses through-hole to be located at outside model babinet 1, transmission rod is stretched out by model casing preformed hole and there are gaps the body of rod and hole, is gas
Flowing provides necessary condition.An admission line, other wholes are only stayed obtaining initial air-flow stage tunnel model gas-guide tube
Closing, can still ensure that gas can circulate.The heat-insulating shield 501 is slided by transmission rod 502 and 1 side wall of model babinet
It is dynamic, tunnel model gas-guide tube 6 is set on 1 side wall of model babinet, and tunnel model gas-guide tube is set as multiple, can directly set
It sets at model wall box position, can also be connected with tunnel wall, the tunnel model air guide tube shape being connected with tunnel wall is such as
Shown in attached drawing 3.Described 6 one end of tunnel model gas-guide tube is connected with simulation air flow system 3, and rock is filled in the model babinet 1
Soil material 7, rock-soil material will be simulated with the material identical in soil, the mountainous region in the cold area place tunnel for needing to study etc. with improving
The authenticity of test.The rock-soil material 7 is centered around on 201 outer wall of tunnel wall.The utility model can simulate the short span in cold area
The specific environment of tunnel portal, the variability of the complexity and environment temperature of environment, specific aim where can adapt to tunnel in cold area
By force, and the tunnel cooling test under different air velocities, different initial temperatures, device simple installation, convenient for real can be carried out
It applies, measuring accuracy is higher, and the design for area short tunnel tunnel of trembling with fear provides foundation.
In order to improve the flexibility of test, the authenticity of specific aim and simulation, this rating model further includes ground temperature simulation system
System 8, the ground temperature simulation system 8 is located at 1 bottom wall position of model babinet, and cavity is arranged inside 1 bottom wall of model babinet,
Ground temperature cryostat entrance 801 and ground temperature cryostat outlet 802 is arranged in 1 bottom wall side of the model babinet, by ground temperature cryostat entrance and
Ground temperature cryostat outlet cryostat substance is filled in cavity, in a model, opening can be set at the top of bottom wall, make cryostat substance and
Rock-soil material is in contact, to simulate really cold area's short tunnel environment.The ground temperature cryostat entrance 801 and ground temperature cryostat outlet
802 communicate with cavity.The setting of ground temperature simulation system so that model is more nearly true tunnel environment, and can
Control is adjusted to ground temperature, to improve flexibility, specific aim and the authenticity of test.
In order to improve flexibility and the diversity of rating model adjusting, air guide head piece 9 is arranged in 2 entrance of the tunnel model,
As shown in Fig. 2, the air guide head piece 9 is the small special-shaped mouth of outer imperial palace, is in horn-like, first temperature sensor 401
At the link position of air guide head piece 9 and tunnel conventional mouth.Air guide head piece is designed using the principle of gas compression cooling, can
Play the role of Physical temperature-lowering, improves flexibility and the diversity of model cootrol adjusting.
In order to distribute the structure of this rating model rationally, the simulation air flow system 3 includes air pump 301, the air pump 301
The first air pump gas-guide tube 302 is arranged in side, and heat sink 303, the cooling dress is arranged in 302 side of the first air pump gas-guide tube
It sets 303 sides and the second air pump gas-guide tube 304 is set, the second air pump gas-guide tube 304 is connected with tunnel model gas-guide tube 6.
Air flow system being simulated in the utility model, air-flow being manufactured by air pump, the temperature of air-flow is adjusted with heat sink mutual cooperation
Section, it is small, it is reasonable for structure, optimize the test of model.
For the rule that more objectively reaction tunnel in cold area is influenced by temperature, first temperature sensor 401 is along cross
To with longitudinally disposed several second temperature sensors 402.Second temperature sensor is convenient for the temperature of testing tunnel model ambient enviroment
Spend situation, the rule that more objectively reaction tunnel in cold area is influenced by temperature.
In order to optimize the transmission between transmission rod and heat-insulating shield, the transmission rod 502 is threaded rod, the transmission rod 502
It is threadedly coupled between heat-insulating shield 501.Transmission rod is threadedly coupled with heat-insulating shield, when operating personnel rotate transmission rod, in model
Under the action of wall box and tunnel inner wall, heat-insulating shield is along model box body-sliding, consequently facilitating the position of adjustment heat-insulating shield.It is convenient for
The position for adjusting heat-insulating shield more stablizes after so that heat-insulating shield is fixed, is not easy to loosen.
For the compactness for improving the heat insulation of heat-insulating shield and being bonded with tunnel wall inner wall, the heat-insulating shield 501 is
The Rigid foam polyurethane of the adiabatic tinfoil of surface package.Polyurethane material thermal coefficient is low, cooperates, not only increases with tinfoil
Heat insulation, tinfoil between heat-insulating shield and tunnel wall inner wall, also improve heat-insulating shield be bonded with tunnel wall inner wall it is close
Property.
In order to improve the convenience that device uses, the model babinet 1 is see-through model babinet.See-through model babinet is convenient for
Model box house is observed and adjusted, the convenience that device uses is improved.
In order to improve the flexibility that device uses, gas pump meter is set on the first air pump gas-guide tube 302, described
Valve is set on two air pump gas-guide tubes 304.Gas pump meter is set on the first air pump gas-guide tube, on the second air pump guide pipeline
Setting valve improves the flexibility that device uses convenient for controlling the air-flow that air pump generates.
A kind of test method of cold area's short tunnel inlet cooling rating model, includes the following steps：
1), simulation test preparation process：Clearly test needs parameter or factor to be simulated first, by the tunnel model
2, which are placed in model casing, formulates position, then adjusts the tunnels mimic driving system heat-insulating shield 501 to predeterminated position according to phase
Size progress and the layered coverage rock-soil material 7 into the model casing are carried out like simulation test, rock-soil material 7 is using where the area that trembles with fear
Material in ground soil, mountainous region, and tunnel model gas-guide tube 6 is connected with simulation air flow system 3, by other tunnel models
Gas-guide tube 6 seals；
2) the cooling-down effect step of different temperatures air-flow, is simulated：Fixed 501 position of tunnel piercing systems insulation plate；Then
Make simulation air flow system 3 manufacture gas arrive constant current state, while opening temperature sensor acquisition initial temperature, then to air-flow into
Row and gas flow temperature are adjusted, and adjust the steady temperature needed to experiment；
3), location parameter step：Open whole tunnel model gas-guide tubes 6, obtain in different time sections tunnel temperature field and
Cross section temperature field；Simulation air flow system 3 is adjusted to different temperatures replication parameter acquisition step；
4), follow-up analog result processing step：Different initial gas flow temperatures and different time Imitating tunnel will be obtained successively
Road cross section temperature field is drawn, and above-mentioned relation is depicted as different temperatures air-flow-tunnel cooling graph of relation.This practicality
Novel test method is clear, and cost is controllable, convenient to carry out, can simulate the specific environment of more true tunnel in cold area, surveys
Area's short tunnel of trembling with fear under the conditions of different temperature, air-flow etc. cools down the regularity of distribution, provide foundation for cold area's short tunnel design.
Embodiment 1：
A kind of cold area's short tunnel inlet cooling rating model, including model babinet 1, tunnel model 2, simulation air flow system 3,
Sensor-based system 4 and simulation tunnel piercing system 5 are measured, tunnel model 2 is set in the model babinet 1, the tunnel model 2 wraps
Include tunnel wall 201, the end of the tunnel wall 201 is fixedly connected with 1 side wall of model babinet, tunnel wall and model wall box it
Between can be glued, in the present embodiment, can be glued between tunnel wall and model wall box with grafting.1 side wall of model babinet
Tunnel is formed between tunnel inner wall, the measurement sensor-based system 4 includes the first temperature sensor 401, display and power supply electricity
Source, in the present embodiment, the first temperature sensor and second temperature sensor use model WRNK-191.First temperature passes
Sensor 401 is multiple, and multiple first temperature sensors 401 are along 201 cross-section EDS maps of tunnel wall, first temperature sensing
Device 401 is located at tunnel portal position, and the simulation tunnel piercing system 5 includes heat-insulating shield 501, the heat-insulating shield 501 and tunnel
Wall 201 inner wall in road is adapted, and can be connected by sliding rail, sliding slot between heat-insulating shield and model wall box or tunnel wall
It connects, can also directly be contacted with model wall box, tunnel wall, in the present embodiment, heat-insulating shield and model wall box, tunnel wall
It is in direct contact.And a diameter of 80mm of heat-insulating shield (the same 80mm of tunnel tunnel face size), tunnel model entrance 120mm, waste diameter
90mm.Transmission rod 502 is set on the heat-insulating shield 501, through-hole, the transmission rod 502 are set on 1 side wall of model babinet
One end is located at across through-hole outside model babinet 1, the heat-insulating shield 501 by transmission rod 502 and 1 side walls of model babinet,
Tunnel model gas-guide tube 6 is set on 1 side wall of model babinet, and in the present embodiment, model wall box is all provided with in tunnel wall
Through-hole is set, tunnel model gas-guide tube passes through through-hole to be interference fitted with model wall box, tunnel wall.The tunnel model gas-guide tube
6 one end are connected with simulation air flow system 3, and rock-soil material 7 is filled in the model babinet 1, and the rock-soil material 7 is centered around tunnel
On 201 outer wall of road wall.The utility model can simulate the specific environment of the short span tunnel portal in cold area, with strong points, and energy
The tunnel cooling test under different air velocities, different initial temperatures is enough carried out, device simple installation is convenient to carry out, test essence
Degree is higher, and the design for area short tunnel tunnel of trembling with fear provides foundation.This rating model further includes ground temperature simulation system 8, the ground temperature
Simulation system 8 is located at 1 bottom wall position of model babinet, and cavity, the model babinet 1 are arranged inside 1 bottom wall of model babinet
Ground temperature cryostat entrance 801 and ground temperature cryostat outlet 802 is arranged in bottom wall side, and the ground temperature cryostat entrance 801 and ground temperature cryostat go out
Mouth 802 is communicated with cavity.The setting of ground temperature simulation system so that model is more nearly true tunnel environment, Er Qieneng
It is enough that control is adjusted to ground temperature, to improve flexibility, specific aim and the authenticity of test.2 entrance of the tunnel model
Air guide head piece 9 is set, and the air guide head piece 9 is the small special-shaped mouth of outer imperial palace, is in horn-like, first temperature sensor 401
At the link position of air guide head piece 9 and tunnel conventional mouth.Air guide head piece is designed using the principle of gas compression cooling, energy
Enough play the role of Physical temperature-lowering, improves flexibility and the diversity of model cootrol adjusting.Simulate air flow system manufacture air-flow
Air source can be air compressor, and air compressor connects weather adjustment device, weather adjustment device and tunnel model conduit phase
Connection.The simulation air flow system 3 includes air pump 301, and the first air pump gas-guide tube 302, this implementation is arranged in 301 side of the air pump
In example, the first air pump gas-guide tube is set at the blowing mouth of air pump, and air pump uses the small air pump of model YSB-HG180.Institute
302 side of the first air pump gas-guide tube setting heat sink 303 is stated, heat sink is led with the first air pump conduit and the second air pump
Manage identical, heat sink internal cooling material and structure are located at below through-hole, prevent from entering in the second air pump conduit, this implementation
In example, the first air pump conduit and the second air pump conduit with heat sink grafting.In fact, the temperature because measuring area's short tunnel of trembling with fear
Degree, the initial temperature of test is relatively low, therefore temperature-adjusting device uses heat sink.Heat sink uses existing model
Heat sink, such as using ethylene glycol and water 1:The coolant liquid of 1 hybrid combining or ice cube etc. are flexibly placed as needed.It is described
The second air pump gas-guide tube 304, the second air pump gas-guide tube 304 and 6 phase of tunnel model gas-guide tube is arranged in 303 side of heat sink
Connection.Air flow system is simulated in the utility model, air-flow is manufactured by air pump, with heat sink mutual cooperation to the temperature of air-flow
It is adjusted, it is small, it is reasonable for structure, optimize the test of model.First temperature sensor 401 is transversely set with longitudinal
Set several second temperature sensors 402.Second temperature sensor is convenient for the temperature conditions of testing tunnel model ambient enviroment, more
Add the rule that objectively reaction tunnel in cold area is influenced by temperature.Transmission rod can be plugged on heating power plate, and heating power plate is pushed to advance
It retreating, in the present embodiment, the transmission rod 502 is threaded rod, is threadedly coupled between the transmission rod 502 and heat-insulating shield 501,
In use, supporting rod is arranged in transmission rod handle portion, for increasing the stability of transmission rod rotation.Transmission rod and heat-insulating shield screw thread
Connection more stablizes after so that heat-insulating shield is fixed convenient for adjusting the position of heat-insulating shield, is not easy to loosen.In the present embodiment, the thermal insulation
Plate 501 is the Rigid foam polyurethane that adiabatic tinfoil is wrapped up on surface.Heat-insulating shield is the Rigid foam polyurethane that adiabatic tinfoil is wrapped up on surface,
The compactness for improving the heat insulation of heat-insulating shield and being bonded with tunnel wall inner wall.The model babinet 1 is transparent mould molding box
Body.In the present embodiment, model babinet uses transparent toughened glass plate material.See-through model babinet be convenient for model box house into
Row observation and adjustment, improve the convenience that device uses.Gas pump meter is set on the first air pump gas-guide tube 302, institute
It states and valve is set on the second air pump gas-guide tube 304.Gas pump meter, the second air pump gas-guide tube are set on the first air pump gas-guide tube
Valve is set on road, convenient for controlling the air-flow that air pump generates, improves the flexibility that device uses.
Embodiment 2：
The test method of said determination model, which is characterized in that include the following steps：
1), simulation test preparation process：Clearly test needs the initial gas flow temperature of difference to be simulated first, by the tunnel
Road model 2 is placed in model casing and formulates position, then adjusts tunnels mimic driving system heat-insulating shield 501 to the predeterminated position and presses
Photograph carries out size progress and the layered coverage rock-soil material 7 into the model casing like simulation test, and rock-soil material 7 uses Han Qu
Material in location soil, mountainous region, and tunnel model gas-guide tube 6 is connected with simulation air flow system 3, by other tunnel moulds
Type gas-guide tube 6 seals；
2) the cooling-down effect step of different temperatures air-flow, is simulated：Fixed 501 position of tunnel piercing systems insulation plate；Then
Make simulation air flow system 3 manufacture gas arrive constant current state, while opening temperature sensor acquisition initial temperature, then to air-flow into
Row and gas flow temperature are adjusted, and adjust the steady temperature needed to experiment；
3), location parameter step：Open whole tunnel model gas-guide tubes 6, obtain in different time sections tunnel temperature field and
Cross section temperature field；Simulation air flow system 3 is adjusted to different temperatures replication parameter acquisition step；
4), follow-up analog result processing step：Different initial gas flow temperatures and different time Imitating tunnel will be obtained successively
Road cross section temperature field is drawn, and above-mentioned relation is depicted as different temperatures air-flow-tunnel cooling graph of relation.This practicality
Novel test method is clear, and cost is controllable, convenient to carry out, can simulate the specific environment of more true tunnel in cold area, surveys
Area's short tunnel of trembling with fear under the conditions of different temperature, air-flow etc. cools down the regularity of distribution, provide foundation for cold area's short tunnel design.Attached drawing 4
The test result figure changed over time for temperature at a temperature of different initial air-flows.
Embodiment 3：
In the present embodiment, model uses the structure in embodiment 1, then in simulation test preparation process, from ground temperature cryostat
Entrance is put into cavity by ethylene glycol and water 1:The coolant liquid of 1 hybrid combining, coolant liquid and ground temperature cryostat entrance, ground temperature cryostat
Outlet complements each other to form cooling system, and model babinet bottom wall is adjusted to the ground temperature state of needs.Tunnel model gas-guide tube root
According to needing to connect with single or multiple second air pump gas-guide tubes, to which the different air velocities, the difference that flexibly obtain needs are initial
Temperature and different ground temperature, other testing procedures are same as Example 2.
Claims (9)
1. a kind of cold area's short tunnel inlet cooling rating model, it is characterised in that：Including model babinet (1), tunnel model (2),
It simulates air flow system (3), measure sensor-based system (4) and simulation tunnel piercing system (5), tunnel is set in the model babinet (1)
Road model (2), the tunnel model (2) include tunnel wall (201), end and model babinet (1) side of the tunnel wall (201)
Wall is fixedly connected, and the model babinet (1) forms tunnel between side wall and tunnel inner wall, and the measurement sensor-based system (4) includes
First temperature sensor (401), display and power supply, first temperature sensor (401) be it is multiple, multiple described the
One temperature sensor (401) is located at tunnel portal along tunnel wall (201) cross-section EDS maps, first temperature sensor (401)
At position, the simulation tunnel piercing system (5) includes heat-insulating shield (501), and the heat-insulating shield (501) is interior with tunnel wall (201)
Wall is adapted, and transmission rod (502) is arranged on the heat-insulating shield (501), through-hole is arranged on model babinet (1) side wall, described
Transmission rod (502) one end is located at model babinet (1) outside across through-hole, and the heat-insulating shield (501) passes through transmission rod (502) and mould
Molding box body (1) side walls, setting tunnel model gas-guide tube (6), the tunnel model air guide on model babinet (1) side wall
Pipe (6) one end is connected with simulation air flow system (3), filling rock-soil material (7), the ground material in the model babinet (1)
Material (7) is centered around on tunnel wall (201) outer wall.
2. a kind of cold area's short tunnel inlet cooling rating model according to claim 1, it is characterised in that：This rating model
Further include ground temperature simulation system (8), the ground temperature simulation system (8) is located at model babinet (1) bottom wall position, the model casing
Cavity, model babinet (1) the bottom wall side setting ground temperature cryostat entrance (801) and ground temperature cryostat are set inside body (1) bottom wall
It exports (802), the ground temperature cryostat entrance (801) and ground temperature cryostat outlet (802) are communicated with cavity.
3. a kind of cold area's short tunnel inlet cooling rating model according to claim 1, it is characterised in that：The tunnel mould
Air guide head piece (9) is arranged in type (2) entrance, and the air guide head piece (9) is the small special-shaped mouth of outer imperial palace, in horn-like, described first
Temperature sensor (401) is located at the link position of air guide head piece (9) and tunnel conventional mouth.
4. a kind of cold area's short tunnel inlet cooling rating model according to claim 1, it is characterised in that：The simulation gas
Streaming system (3) includes air pump (301), and the first air pump gas-guide tube (302), first air pump is arranged in air pump (301) side
Heat sink (303) is arranged in gas-guide tube (302) side, and the second air pump gas-guide tube is arranged in heat sink (303) side
(304), the second air pump gas-guide tube (304) is connected with tunnel model gas-guide tube (6).
5. a kind of cold area's short tunnel inlet cooling rating model according to claim 1 or 3, it is characterised in that：Described
One temperature sensor (401) transversely with longitudinally disposed several second temperature sensors (402).
6. a kind of cold area's short tunnel inlet cooling rating model according to claim 1, it is characterised in that：The transmission rod
(502) it is threaded rod, is threadedly coupled between the transmission rod (502) and heat-insulating shield (501).
7. a kind of cold area's short tunnel inlet cooling rating model according to claim 1 or 6, it is characterised in that：It is described exhausted
Hot plate (501) is the Rigid foam polyurethane that adiabatic tinfoil is wrapped up on surface.
8. a kind of cold area's short tunnel inlet cooling rating model according to claim 1, it is characterised in that：The model casing
Body (1) is see-through model babinet.
9. a kind of cold area's short tunnel inlet cooling rating model according to claim 4, it is characterised in that：First gas
Gas pump meter is set on pump gas-guide tube (302), valve is set on the second air pump gas-guide tube (304) road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721250885.6U CN207992098U (en) | 2017-09-27 | 2017-09-27 | A kind of cold area's short tunnel inlet cooling rating model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721250885.6U CN207992098U (en) | 2017-09-27 | 2017-09-27 | A kind of cold area's short tunnel inlet cooling rating model |
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