CN209343642U - A kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device - Google Patents
A kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device Download PDFInfo
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- CN209343642U CN209343642U CN201821688174.1U CN201821688174U CN209343642U CN 209343642 U CN209343642 U CN 209343642U CN 201821688174 U CN201821688174 U CN 201821688174U CN 209343642 U CN209343642 U CN 209343642U
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Abstract
The utility model discloses a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments devices, including constant temperature storehouse, air speed control device, tunnel model, thermostat, air velocity transducer, temperature sensor, data collection system, constant temperature storehouse is to provide cold source, air speed control device is to provide wind energy, tunnel model is formed by tunnel model unit spliced, thermostat is made of thermostat unit and is arranged independently of each other between thermostat unit, thermostat unit is wrapped in tunnel model unit outer surface, air velocity transducer, temperature sensor be arranged in tunnel model and with data collection system Electricity Federation.The experimental provision tested using the tunnel in cold area longitudinal temperature regularity of distribution under one-way or bi-directional ventilation condition provided by the utility model, the regularity of distribution that long tunnel longitudinal temperature under the conditions of different length of tunnel, different tunnel portal temperature, different tunnel portal wind speed, different surrounding rock initial temperature etc. can be simulated, can provide accurate parameter for head of district's tunneling insulating layer laying length of trembling with fear.
Description
Technical field
The utility model relates to tunnel in cold area experimental provision, specifically a kind of aeration type tunnel in cold area longitudinal temperature distribution is real
Experiment device.
Background technique
With the rapid development of infrastructure construction in china, in the high latitude areas such as northwest China, northeast and China west
Portion high altitude localities, the tunnel built is more and more, and length of tunnel is also increasingly longer.By taking west Sichuan plateau vcehicular tunnel as an example,
Build up at present and be more than 152 kilometers/88 in the tunnel built, in foreseeable future, west Sichuan plateau tunnel will up to 304 kilometers/
162；And amp- Linzhi's section refined for Sichuan-Tibet railway, tunnel accounting are even more than 90%, length is more than 30km's according to a preliminary estimate
Tunnel has 7 or more, has tunnel height above sea level in part in 4200m or more.Currently, the short tunnel in cold area in, usually in full tunnel
Road uses identical anti-freeze thawing measure, and insulating layer laying depth is identical, although as long tunnel is increasing, it is also considered that
Long tunnel both ends are laid with the mode of insulating layer, but this laying length is substantially according to the side such as external experience formula or engineering analogy
Method is not met with China's actual conditions, the technical specification and data that the anti-freeze thawing design parameter of tunnel in cold area not can refer to.Using
It is obtaining the result is that most really, also can most tally with the actual situation, can be insulating layer to the method that live tunnel carries out field test
Laying length provides accurate parameter, but there are problems that two, first is that test result can only represent the longitudinal temperature in a certain seat tool body tunnel
Spend the regularity of distribution, the influence factor of the tunnel longitudinal temperature regularity of distribution is numerous, such as: the most cold monthly mean temperature in hole, natural wind speed,
Wind direction, length of tunnel etc., popularization and application have certain limitation, in addition carry out on-the-spot test in Han Qu and need to expend a large amount of people
Power, material resources and financial resources, project amount is big, and economic and practical is general；Second is that only tunnel is completed the data test result after being open to traffic
The actual tunnel longitudinal temperature regularity of distribution can be represented, on-the-spot test has serious full rear property, is difficult to meet the practical need of design
It asks.Theory analysis then excessively idealizes, it is assumed that condition is too many, it is also difficult to and meet requirement of engineering, even can satisfy needs,
It need to be verified.Therefore, on the whole, still lack a kind of effective hand for studying the tunnel in cold area longitudinal temperature regularity of distribution at present
Section.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of aeration type tunnel in cold area longitudinal temperature
Distribution experiments device can simulate different length of tunnel, different tunnel portal temperature, different tunnel portal wind by the device
The regularity of distribution of long tunnel longitudinal temperature under the conditions of speed, different surrounding rock initial temperature etc., thus for cold head of district's tunneling insulating layer paving
If Design of length provides foundation.
The purpose of this utility model is achieved through the following technical solutions: a kind of aeration type tunnel in cold area longitudinal temperature
Distribution experiments device, including constant temperature storehouse, air speed control device, tunnel model, thermostat, air velocity transducer, temperature sensor,
Data collection system, the constant temperature storehouse to provide cold source, the air speed control device be arranged in constant temperature storehouse and to
Wind energy is provided, the tunnel model is formed by tunnel model unit spliced and is connected to constant temperature storehouse, and the thermostat is by constant temperature
It is arranged independently of each other between slot unit composition and thermostat unit, thermostat unit is wrapped in tunnel model unit outer surface, institute
State air velocity transducer, temperature sensor be arranged in tunnel model and with data collection system Electricity Federation.
Preferably, the constant temperature storehouse includes storehouse and to control temperature in storehouse, and the storehouse side is equipped with
With the consistent circular hole of tunnel model internal diameter；The air speed control device includes axial flow blower, the central axis of the axial flow blower with
Tunnel model center overlapping of axles, axial flow blower outer dimension are greater than circular hole size.
Preferably, the constant temperature storehouse is equipped with and one and be connected to tunnel model one end, or equipped with 2 and respectively with tunnel
The connection of model both ends.
Preferably, the tunnel model uses pvc pipe, is connected between the tunnel model unit by pin and box sub, and
Junction is sealed by sealant.
Preferably, the thermostat unit is in cylindrical type, and the inner sidewall of thermostat unit selects the aluminium of 0.2-0.5mm thickness
Material, thermostat unit include catch basin, and the catch basin is equipped with inlet and outlet pipes, and the inlet and outlet pipes are erected by horizontal tube and two
Straight tube composition, the both ends of the horizontal tube are connect with two vertical pipes respectively.
Preferably, thermostat unit one end is equipped with several connecting rods, and the other end is equipped with company corresponding with connecting rod
Hole is connect, the length of the connecting rod is not less than the half of thermostat element length.
Preferably, the pin and box sub between the tunnel model unit is arranged in thermostat unit.
Preferably, the air velocity transducer, temperature sensor are equipped with several, and are uniformly arranged, the temperature sensor
It is provided in the upper and lower sides of tunnel model, one of them described air velocity transducer is arranged in one end of tunnel model and to examine
Survey the wind speed size of air speed control device.
Preferably, one end of each tunnel model unit is mounted on air velocity transducer, temperature sensor.
Preferably, the cross dimensions of the tunnel model is 1:50, and each tunnel model element length is 3m
The beneficial effects of the utility model are: utilizing the area one-way or bi-directional ventilation condition Xia Han provided by the utility model tunnel
The experimental provision of road longitudinal temperature regularity of distribution test can simulate different length of tunnel, different tunnel portal temperature, different tunnels
The regularity of distribution of long tunnel longitudinal temperature under the conditions of road inlet velocity, different surrounding rock initial temperature etc. can be cold head of district tunnel
Insulating layer laying length provides accurate parameter, on the one hand can effectively prevent tunnel-liner freeze injury appearance, guarantee driving safety；It is another
Construction cost can be effectively reduced in aspect, improve business efficiency, provide foundation for the construction and design in head of district tunnel of trembling with fear.
Detailed description of the invention
Fig. 1 is unidirectional experimental device for ventilation；
Fig. 2 is longitudinal cross-section diagram in Fig. 1；
Fig. 3 is bidirectional ventilated experimental provision；
Fig. 4 is longitudinal cross-section diagram in Fig. 3；
Experimental provision longitudinal direction cross-sectional view in Fig. 5 the utility model；
Fig. 6 is thermostat model；
Fig. 7 is thermostat model unit structural schematic diagram；
Fig. 8 is tunnel model.
Specific embodiment
The technical solution of the utility model, but the protection scope of the utility model are described in further detail with reference to the accompanying drawing
It is not limited to as described below.
Embodiment 1
As shown in figures 1 to 6, a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device, including constant temperature storehouse 1, wind speed
Control device；Constant temperature storehouse 1 is equipped with one, is made of refrigeration system, storehouse, can accurately control storehouse by refrigeration system
Interior temperature is provided with a circular hole 11(in the side of storehouse to test and more meet reality and can also be split into tunnel-shaped
Hole), 11 size of circular hole is consistent with tunnel model internal diameter.Air speed control device, in storehouse, apart from 11 10-20cm of circular hole
Place is equipped with axial flow blower 12,12 central axis of axial flow blower and tunnel center overlapping of axles, and 12 outer dimension of axial flow blower compares storehouse
Circular hole 11 is than greatly, guarantee can be to the uniform Parallel airflow beam of input in tunnel model, certainly by the simulation of axial flow blower 12 on wall
So ventilation.Axial flow blower 12 has different shelf grades, can form the wind of varying strength by adjusting, using axial flow blower 12 by library
Cold air is fed forward in room with certain speed, and then forms the wind of different wind speed, and cold wind is blowed to by circular hole 11 on storehouse wall
Tunnel is equipped with air velocity transducer 3 and temperature sensor 4 at tunnel entrance, can be tested by air velocity transducer 3 into tunnel
Air speed value in road can learn the temperature value into cold air in tunnel by temperature sensor 4.Tunnel face wind speed can pass through
Axial flow blower 12 is adjusted, and tunnel face temperature can be adjusted by adjusting refrigeration system, and refrigeration system temperature range is 0 ~ -35 DEG C,
The most cold monthly mean temperature value in any high latitude in China and high altitude localities can be covered.
Tunnel model is simulated using round heavy wall pvc pipe, and 1:50 considers cross dimensions in proportion, by multistage tunnel model
Unit 2 is assemblied to form tunnel model, and each model unit is the long 3m of every section, and model both ends are provided with male and female interface, Ke Yitong
Assembling combination is crossed into the tunnel model of random length, connector is sealed using sealant, is arranged with temperature above and below in tunnel inner wall
Sensor 4 is spent, the fore-and-aft distance of temperature sensor 4 is considered by 3m, and air velocity transducer 3, Suo Youwen is arranged at same position
The lead of degree sensor 4 and air velocity transducer 3 is connected to data acquisition device.Tunnel model is placed on bracket, and model height is with tunnel
Road axis is open with storehouse, and centre-height is consistent to be advisable.
Thermostat is spliced by thermostat unit 5, using thermostated cooling bath temperature control, each constant temperature slot length 3m, and tunnel mould
Type is installed in thermostat, and the thermostat unit 5 is in cylindrical type, and the inner sidewall of thermostat unit 5 selects the aluminium of 0.3mm thickness
Material, thermostat unit 5 include catch basin, and the catch basin is equipped with inlet and outlet pipes, and the inlet and outlet pipes are by horizontal tube and two
Vertical pipe composition, the both ends of the horizontal tube are connect with two vertical pipes respectively.Enable thermostat close to tunnel model, guarantees permanent
Warm channel mould is quasi-
More specifically, described 5 one end of thermostat unit is equipped with several connecting rods, and the other end is equipped with and connecting rod pair
The connecting hole answered, the length of the connecting rod are not less than the half of 5 length of thermostat unit.Connection between thermostat unit 5
Component uses the good material of thermal conductivity, realizes and transmits heat between the thermostat unit 5 being in contact, and makes to measure the data come more
Fitting is practical.
Country rock temperature on the outside of tunnel can be simulated by thermostat, by controlling the temperature of thermostat, can be simulated true
Tunnel surrounding initial temperature.Each thermostat can independent temperature control, and then tunnel longitudinal direction different surrounding rock can be simulated initially
Tender feeling condition reaches the different edpth of tunnel conditions of simulation.
Data collection system, in model air velocity transducer 3 and temperature sensor 4 connect, mainly acquire experimentation
The air speed data of middle tunnel temperature data along longitudinal direction and different depth, can automatic data collection, it is whole-process automatic in experimentation
Acquisition, frequency acquisition can determine according to actual needs.
Whole experiment process is:
1, constant temperature storehouse 1 is equipped with to be installed to air speed control device in storehouse in cold abutment wall side aperture as required
Position, and debugged, it is ensured that it can achieve the subzero temperature of requirement of experiment.
2, processing and fabricating pin-connected panel tunnel model as required, tunnel model length is based on the every section of 3m, convenient transportation and peace
Dress.
3, thermostated cooling bath slot is installed, it is spare.
4, the assembled tunnel model in thermostat, installs temperature, wind speed measuring point as required in an assembling process.
5, thermostatic bath system and data acquisition test system are opened, reaches requirement of experiment and steady to tunnel model peripheral temperature
After fixed, prepare constant temperature storehouse 1.
6, constant temperature storehouse 1 is opened, after temperature in storehouse is down to requirement of experiment value, air speed control device is opened, takes out library
The partition in room abutment wall hole, cold wind enter model tunnel, are tested, and wind speed size is adjusted step by step by ascending sequence.
7, testing after temperature is basicly stable in tunnel model, under the conditions of this terminates, and then adjusts wind-force size, carries out
Next stage wind velocity test stops this time testing after the completion of desired all rank wind speed are tested.
8, it by requirement of experiment adjustment thermostat and 1 temperature of constant temperature storehouse, is tested next time.
9, it by assembling different tunnel growth devices, is accordingly tested.
Embodiment 2
As shown in fig. 3 to 7, a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device includes constant temperature storehouse 1, by making
Cooling system, storehouse composition, between setting 2 altogether, one main one is auxiliary, and main constant temperature storehouse 1 is using fixed, the auxiliary use of constant temperature storehouse 1
Mobile, it can move freely.The temperature in storehouse can be accurately controlled by refrigeration system, be provided with one in the side of storehouse
Round (in order to test the hole for more meeting reality and can also being split into tunnel-shaped), 11 size of circular hole and tunnel model internal diameter one
It causes.Pulley is installed in the quadrangle of auxiliary 1 lower part of constant temperature storehouse, can move freely, so as to be provided more easily for experiment
Cold source.
Air speed control device is equipped with axial flow blower 12, axial flow blower 12 in storehouse at circular hole 1110-20cm
Central axis and tunnel center overlapping of axles, for 12 outer dimension of axial flow blower than circular hole 11 on storehouse wall than big, guarantee can give tunnel
The uniform Parallel airflow beam of input in road model simulates gravity-flow ventilation by axial flow blower 12.Axial flow blower 12 has different shelf grades,
Cold air in storehouse, is fed forward by the wind that varying strength can be formed by adjusting using axial flow blower 12 with certain speed,
And then the wind of different wind speed is formed, cold wind blows to tunnel by circular hole 11 on storehouse wall, and wind speed biography is equipped at tunnel entrance
Sensor 3 and temperature sensor 4 can be tested into air speed value in tunnel by anemobiagraph, can be learnt by temperature sensor 4
The temperature value of cold air in into tunnel.Tunnel face wind speed can be adjusted by axial flow blower 12, and tunnel face temperature can pass through
It adjusts refrigeration system to adjust, refrigeration system temperature range is 0 ~ -35 DEG C, can cover any high latitude in China and high altitude localities
Most cold monthly mean temperature value.
Tunnel model is simulated using round heavy wall pvc pipe, and 1:50 considers cross dimensions in proportion, by multistage tunnel model
Unit 2 is assemblied to form tunnel model, and each model unit is the long 3m of every section, and model both ends are provided with male and female interface, Ke Yitong
Assembling combination is crossed into the tunnel model of random length, connector is sealed using sealant, is arranged with temperature above and below in tunnel inner wall
Sensor 4 is spent, the fore-and-aft distance of temperature sensor 4 is considered by 3m, and air velocity transducer 3, Suo Youwen is arranged at same position
The lead of degree sensor 4 and anemobiagraph is connected to data acquisition device.Tunnel model is placed on bracket, and model height is with tunnel axis
Being open with storehouse, centre-height is consistent to be advisable.
Thermostat, using thermostated cooling bath temperature control, each constant temperature slot length 3m.The thermostat unit 5 is in cylindrical type, and permanent
The inner sidewall of warm slot unit 5 selects the aluminium material of 0.3mm thickness, and thermostat unit 5 includes catch basin, the catch basin equipped with into
Outlet pipe, the inlet and outlet pipes are made of horizontal tube and two vertical pipes, and the both ends of the horizontal tube are connect with two vertical pipes respectively.
Inlet and outlet pipes are made of horizontal tube and two vertical pipes, can increase thermostat inside water pressure, enable thermostat close to tunnel mould
Type guarantees thermostat simulation.
More specifically, described 5 one end of thermostat unit is equipped with several connecting rods 51, and the other end is equipped with and connecting rod
51 corresponding connecting holes 52, the length of the connecting rod 51 are not less than the half of 5 length of thermostat unit.Thermostat unit 5 it
Between connecting component use the good material of thermal conductivity, realize and transmit heat between the thermostat unit 5 being in contact, make to measure and
Data be more bonded reality.
Country rock temperature on the outside of tunnel can be simulated by thermostat, by controlling the temperature of thermostat, can be simulated true
Tunnel surrounding initial temperature.Each thermostat can independent temperature control, and then tunnel longitudinal direction different surrounding rock can be simulated initially
Tender feeling condition reaches the different edpth of tunnel conditions of simulation.
Data collection system, in model air velocity transducer 3 and temperature sensor 4 connect, mainly acquire experimentation
The air speed data of middle tunnel temperature data along longitudinal direction and different depth, can automatic data collection, it is whole-process automatic in experimentation
Acquisition, frequency acquisition can determine according to actual needs.
Whole experiment process is:
1, constant temperature storehouse 1 is equipped with to be installed to air speed control device in storehouse in cold abutment wall side aperture as required
Position, and debugged, it is ensured that it can achieve the subzero temperature of requirement of experiment.
2, processing and fabricating pin-connected panel tunnel model as required, tunnel model length is based on the every section of 3m, convenient transportation and peace
Dress.
3, constant temperature cold trap is installed, it is spare.
4, the assembled tunnel model in thermostat, installs temperature, air velocity transducer as required in an assembling process.
5, thermostatic bath system and data acquisition test system are opened, reaches requirement of experiment and steady to tunnel model peripheral temperature
After fixed, prepare constant temperature storehouse 1.
6, it according to tunnel both ends temperature simulation value, opens constant temperature storehouse 1 and sets relevant temperature value, dropped to temperature in storehouse
To requirement of experiment value, air speed control device is separately turned on according to requirement of experiment, takes out the partition in storehouse abutment wall hole, cold wind enters
Model tunnel, is tested, and wind speed size is adjusted step by step by ascending sequence.
7, testing after temperature is basicly stable in tunnel model, under the conditions of this terminates, and then adjusts wind-force size, carries out
Next stage wind velocity test stops this time testing after the completion of desired all rank wind speed are tested.
8, it by requirement of experiment adjustment thermostat and 1 temperature of constant temperature storehouse, is tested next time.
9, it by assembling different tunnel growth devices, is accordingly tested.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form, should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and
Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model
It is required that protection scope in.
Claims (10)
1. a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device, which is characterized in that including constant temperature storehouse, blast velocity control
Device, tunnel model, thermostat, air velocity transducer, temperature sensor, data collection system, the constant temperature storehouse is to provide
Cold source, the air speed control device are arranged in constant temperature storehouse and to provide wind energy, and the tunnel model is by tunnel model list
Member is spliced and is connected to constant temperature storehouse, and the thermostat is made of and mutually indepedent between thermostat unit thermostat unit
Setting, thermostat unit are wrapped in tunnel model unit outer surface, and the air velocity transducer, temperature sensor are arranged in tunnel mould
In type and with data collection system Electricity Federation.
2. a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device according to claim 1, it is characterised in that: institute
Stating constant temperature storehouse includes storehouse and to control temperature in storehouse, and the storehouse side is equipped with consistent with tunnel model internal diameter
Circular hole；The air speed control device includes axial flow blower, the central axis and tunnel model center overlapping of axles of the axial flow blower,
Axial flow blower outer dimension is greater than circular hole size.
3. a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device according to claim 2, it is characterised in that: institute
Constant temperature storehouse is stated equipped with one and is connected to tunnel model one end, or is equipped with 2 and is connected to respectively with tunnel model both ends.
4. a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device according to claim 1, it is characterised in that: institute
It states tunnel model and uses pvc pipe, connected between the tunnel model unit by pin and box sub, and junction is close by sealant
Envelope.
5. a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device according to claim 1, it is characterised in that: institute
Thermostat unit is stated in cylindrical type, and the inner sidewall of thermostat unit selects the aluminium material of 0.2-0.5mm thickness, thermostat unit packet
Catch basin is included, the catch basin is equipped with inlet and outlet pipes, and the inlet and outlet pipes are made of horizontal tube and two vertical pipes, the level
The both ends of pipe are connect with two vertical pipes respectively.
6. a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device according to claim 5, it is characterised in that: institute
Thermostat unit one end is stated equipped with several connecting rods, the other end is equipped with connecting hole corresponding with connecting rod, the connecting rod
Length is not less than the half of thermostat element length.
7. a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device according to claim 5, it is characterised in that: institute
The pin and box sub stated between tunnel model unit is arranged in thermostat unit.
8. a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device according to claim 1, it is characterised in that: institute
State air velocity transducer, temperature sensor is equipped with several, and is uniformly arranged, upper and lower sides of the temperature sensor in tunnel model
It is provided with, one end of tunnel model and the wind to detect air speed control device is arranged in one of them described air velocity transducer
Fast size.
9. a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device according to claim 1 or 8, feature exist
In: one end of each tunnel model unit is mounted on air velocity transducer, temperature sensor.
10. a kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device according to claim 1, it is characterised in that:
The cross dimensions of the tunnel model is 1:50, and each tunnel model element length is 3m.
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| CN201821688174.1U CN209343642U (en) | 2018-10-18 | 2018-10-18 | A kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448536A (en) * | 2018-10-18 | 2019-03-08 | 中铁西南科学研究院有限公司 | A kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device |
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2018
- 2018-10-18 CN CN201821688174.1U patent/CN209343642U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448536A (en) * | 2018-10-18 | 2019-03-08 | 中铁西南科学研究院有限公司 | A kind of aeration type tunnel in cold area longitudinal temperature distribution experiments device |
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