CN210660173U

CN210660173U - Heat sink for face

Info

Publication number: CN210660173U
Application number: CN201921392982.8U
Authority: CN
Inventors: 李玉标; 文应; 石昆; 韩超; 张�林; 丁伟
Original assignee: CCCC SHEC Dong Meng Engineering Co Ltd
Current assignee: CCCC SHEC Dong Meng Engineering Co Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-06-02
Anticipated expiration: 2029-08-26

Abstract

The utility model discloses a heat sink for face, include: the air outlet of the air duct is aligned to the palm surface and used for blowing air to the palm surface; the evaporator is used for radiating cold air, a cold air circulating system is formed between the evaporator and the air cooler through a pipeline and a circulating pump, and an air outlet of the air cooler is communicated with the air duct; the condenser is used for generating cold air, and a return air circulating system is formed between the condenser and the evaporator to realize the treatment of return air; still including being used for carrying out the moisturizing device of moisturizing to the condenser, the moisturizing device passes through circulating pump and outside water source, realizes the supply of moisture in the condenser. The utility model discloses in, the dryer passes through evaporimeter and air cooler etc. has realized the local cooling on the face, and the local cooling of direction is aimed at to the dryer promptly, has greatly improved the efficiency of tunnel face construction.

Description

Heat sink for face

Technical Field

The utility model belongs to the technical field of auxiliary assembly in the tunnel construction, concretely relates to heat sink for face.

Background

The tunnel face is also called child face, which is a term in tunnel construction. I.e. a working face where the excavation of a tunnel (in coal mining, mining or tunnelling) is constantly propelled forward. The tunnel face is a working face for continuously advancing the excavation tunnel. It is not a fixed surface, and the excavated surface has a tunnel face, side wall faces and a vault face, and is exactly opposite to the working face which continuously moves forwards.

In the prior art, most of natural wind enters the tunnel face for cooling after being transmitted by an axial flow fan and a wind band. After the transmission of axial fan and wind band, on one hand, the wind volume can be reduced due to friction, so that part of wind is slowly generated, on the other hand, ice blocks and the like are required to be added for cooling, and the cost is high due to the adoption of the ice blocks for cooling, meanwhile, the transportation of the ice blocks is inconvenient for tunnel construction, if the ice blocks are produced on site, the time requirement is high, especially the temperature is high, and if the production is slow, the ice blocks are easily melted, so that the cooling effect of the ice blocks cannot be realized.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a heat sink for face, it leads to a plurality of condensation cooling device, has improved cooling efficiency, has realized the cyclic connection between the refrigerating plant through connecting simultaneously for whole refrigerating plant can circulate and constantly use, has ensured the cooling and the ventilation in excavation face and the construction, and is with low costs, has improved workman's operational environment.

In order to realize the technical effect, the utility model discloses a following technical scheme realizes:

a cooling device for a face of a palm, comprising:

the air outlet of the air duct is aligned to the palm surface and used for blowing air to the palm surface;

the evaporator is used for radiating cold air, a cold air circulating system is formed between the evaporator and the air cooler through a pipeline and a circulating pump, and an air outlet of the air cooler is communicated with the air duct;

the condenser is used for generating cold air, and a return air circulating system is formed between the condenser and the evaporator to realize the treatment of return air;

still including being used for carrying out the moisturizing device of moisturizing to the condenser, the moisturizing device passes through circulating pump and outside water source, realizes the supply of moisture in the condenser.

As a further improvement of the present invention, the mounting height of the air cooler is higher than that of the evaporator, and the circulation pump is used for conveying the cold air emitted from the evaporator to the higher air cooler.

As a further improvement of the utility model, a coolant is arranged in the circulating pump, and the coolant is one of water, saline water, ethylene glycol, propylene glycol solution, dichloromethane or trichloroethylene.

As the utility model discloses a further improvement still includes the compressor, the compressor sets up between evaporimeter and condenser, the return air that the evaporimeter gived off passes through compressor and condenser and handles the back, flows back to in the evaporimeter once more, forms return air circulation system.

As a further improvement, the utility model also comprises an expansion valve arranged between the condenser and the evaporator, the expansion valve is used for recycling the return air after being processed by the compressor and the condenser to the evaporator after being processed again, and the return air is recycled.

As a further improvement of the utility model, the water supplementing device at least comprises a first water cooler, and an external water source is directly conveyed to the condenser after passing through the first water cooler.

As a further improvement, the utility model also includes the catch basin, and outside water source gets into the catch basin after the second water chiller is handled, gets into behind the catch basin in the condenser, the circulating pump sets up between catch basin and first water chiller.

As the utility model discloses a further improvement still includes the locomotive, the locomotive is equipped with locomotive and carriage, evaporation and condenser are fixed in the carriage bottom, air cooler is fixed in the carriage through first support, and air cooler's mounting height be higher than or equal to the height of locomotive.

As a further improvement of the utility model, the air duct is fixed in the carriage through the second support with adjustable height.

The utility model has the advantages as follows:

the utility model discloses in, the dryer passes through evaporimeter and air cooler etc. has realized the local cooling on the face, and the local cooling of direction is aimed at to the dryer promptly, has greatly improved the efficiency of tunnel face construction.

The utility model discloses in, the evaporimeter is used for the scattered cold air that sends out, condenser preparation cold air, and air cooler also produces cold air, and then a plurality of equipment produce cold air simultaneously, has replaced the cooling of ice-cube goods, has practiced thrift the cost, and the return air that produces in these equipment is finally retrieved and is recycled, has realized the make full use of resource.

Drawings

Fig. 1 is a schematic structural view of a cooling device for a palm surface provided by the present invention;

fig. 2 is a schematic structural view of the mobile vehicle provided by the present invention;

in the figure:

1. an air duct; 2. an evaporator; 3. a circulation pump; 4. an air cooler; 5. a condenser; 6. a cooling water circulation pump; 7. a compressor; 8. an expansion valve; 9. a first water cooler; 10. a water collecting tank; 11. a second water cooler; 12. a water pump; 13. a mobile vehicle; 14. a first bracket; 15. a second bracket; 16. a palm surface.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.

Example 1

Referring to fig. 1, the cooling device for a tunnel face in this embodiment includes an air duct 1, an evaporator 2, a condenser 5, and the like, and because the position of the tunnel face changes, the position of the whole cooling device can be adjusted in combination with actual use, so as to cool the tunnel face at different positions.

Referring to fig. 1, in this embodiment, an air outlet of the air duct 1 is aligned with the tunnel face 16, and is used for blowing air to the tunnel face 16 to perform specific cooling; the evaporator 2 is mainly used for emitting cold air, a cold air circulating system is formed between the circulating pump 3 and the air cooler 4 through a pipeline, and an air outlet of the air cooler 4 is communicated with the air duct 1; the condenser 5 is used for generating cold air, and a return air circulating system is formed between the condenser and the evaporator 2, so that return air treatment is realized; that is, the return air from the evaporator 2 is processed by the condenser 5, and then the temperature is reduced, and the return air is returned to the evaporator 2 to be reused.

Still including being used for carrying out the moisturizing device of moisturizing to condenser 5, the moisturizing device passes through cooling water circulating pump 6 and outside water source, realizes the supply of moisture in the condenser 5.

As the tunnel construction is a long-term project, in order to ensure the temperature reduction of the tunnel face at any time in the whole construction, a sufficient water source is needed, and a water supplementing device is added, so that the sufficiency of the water source can be ensured, and the long-term temperature reduction of the tunnel face can be ensured.

The working process of the embodiment is as follows: condenser 5 starts and begins to make the cold air, and evaporimeter 2 starts and gives off the cold air, and then carries whole cold air to air cooler 4 through circulating pump 3 in, air cooler 4 simultaneously cooling air mixes with the cold air before, carries to in the dryer 1, for dryer 1 provides a large amount of cold air, and dryer 1 then blows a large amount of cold air to face 16, realizes the timely cooling of face 16.

In the embodiment, the whole cooling device is arranged behind the excavation tunnel face and the second lining concrete construction, and is about 50 meters away from the second lining construction, so that the temperature of the excavation tunnel face is reduced from 35 ℃ to about 28 ℃, and the working environment of workers is obviously improved.

Example 2

Referring to fig. 1, in order to further increase the whole temperature reducing process, in this embodiment, the air cooler 4 is installed at a height higher than that of the evaporator 2, and the circulation pump 3 is used for conveying the cold air emitted from the evaporator 2 to the higher air cooler 4. Because air cooler 4's mounting height is high, and then be close to face 16, when being used for the local cooling of high face 16, air cooler 4 is close to dryer 1 distance, and then near the air of dryer 1 gets into in dryer 1 soon after being cooled down by air cooler 4, the waste in the long distance transportation has been avoided, in order to ensure the make full use of that low department evaporimeter 2 distributes the cold air, in this embodiment, increase circulating pump 3, can the manifold cycles with the cold air, the cold air in air cooler 4 promptly, with the cold air that distributes in evaporimeter 2, can the circulation intercommunication, realize cyclic utilization.

Certainly, in order to further cool the circulating cold air, in this embodiment, a secondary refrigerant is further added in the circulating pump 3, and when the circulating pump 3 works, the secondary refrigerant works in the circulating pump 3 in an indirect cooling manner, and the heat of the cooled object is transferred to the substance of the evaporating refrigerant, so that the cooling effect of the circulating cold air is realized, the low temperature of the circulating air is ensured, and preparation is made for subsequently introducing the air into the air duct 1.

In this embodiment, the coolant is one of water, brine, ethylene glycol, propylene glycol solution, methylene chloride, and trichloroethylene.

In the present embodiment, regarding the refrigerant:

1, it has stable property, safety and reliability, no toxic or corrosive action, good flow heat transfer property and cheap and easily-obtained substances. The disadvantage is that the solidification point is 0 ℃ and is relatively high. Due to the limitation of higher freezing point, the high-temperature freezing point cooling device is only suitable for high-temperature cooling occasions with the working temperature above 0 ℃. I.e., in the case of an artificial cooling process and air conditioning apparatus above 0 ℃, water is the most suitable coolant. Such as air conditioning equipment and the like. The temperature of the industrial circulating cooling water is generally 10-30 ℃.

Brine, i.e., an aqueous solution of calcium chloride or sodium chloride, can be used in brine ice makers and indirect-cooled cold storage units, or to cool bagged food. The coagulation temperature of the brine varied with concentration, with the lowest coagulation temperature of the calcium chloride brine being-55 ℃ when the solution concentration was 29.9% and-21.2 ℃ when the solution concentration was 22.4%. When in use, the concentration of the brine is selected based on the condition that the solidification temperature of the solution is about 5 ℃ lower than the evaporation temperature of the refrigerating machine. The calcium chloride and the sodium chloride have low prices and are very corrosive to equipment.

3-propylene glycol and ethylene glycol, which are stable in property and miscible with water, the solidification temperature of the solution of the 3-propylene glycol and the ethylene glycol is changed along with concentration, and the aqueous solution of the 3-propylene glycol and the ethylene glycol is usually used as a refrigerating medium and the applicable temperature range is 0-20. Although the freezing point of ethylene glycol or propylene glycol solution is low, which can reach-50 ℃, the viscosity of the solution rises very rapidly at low temperature, so that the temperature with industrial application value is above-20 ℃. Aqueous solutions thereof are also corrosive.

4 methylene chloride and trichloroethylene, their liquids are generally used as coolants. The solidification temperature of the dichloromethane is-97 ℃, and the applicable temperature range is-50 to-90 ℃. However, both dichloromethane and trichloroethylene have the obvious disadvantages of high liquid volatility, low boiling point, heavy loss and high amount of required supplement, chlorine-containing element which is very active and easily falls off to form hydrochloric acid and hydrochloride to cause equipment corrosion, low water solubility, easy damage of ice blockage, pipe explosion and the like of pipelines and equipment at low temperature, low heat transfer coefficient and low heat transfer coefficient of organic matters. Currently, alternatives are often selected on the market for such organic refrigerants.

In this embodiment, the advantage of using coolant is:

1. the refrigerating machine system can be gathered in a smaller range, the manufacturing, the installation and the operation management of the whole device are convenient, and the refrigerating efficiency is improved. While delivering cold to a remote location. It will also reduce the refrigerant system refrigerant charge and reduce the likelihood of refrigerant leakage.

2. The distribution and control of the cold quantity are convenient. Especially for large capacity air cooling devices with centralized cooling.

3. The coolant used has a large heat capacity, and therefore the temperature of the object to be cooled is easily stabilized.

Example 3

Referring to fig. 1, in the present embodiment, the air conditioner further includes a compressor 7, the compressor 7 is disposed between the evaporator 2 and the condenser 5, and the return air emitted from the evaporator 2 is processed by the compressor 7 and the condenser 5, and then flows back to the evaporator 2 again to form the return air circulation system.

The air conditioner further comprises an expansion valve 8 arranged between the condenser 5 and the evaporator 2, wherein the expansion valve 8 is used for recycling return air processed by the compressor 7 and the condenser 5 to the evaporator 2 after being processed again and then recycling the return air.

A compressor (compressor) is a driven fluid machine that raises low-pressure gas into high-pressure gas, and is a heart of a refrigeration system. The refrigeration cycle comprises a gas suction pipe, a motor, a piston, an exhaust pipe, a compression pipe, a condensation pipe, an expansion pipe, an evaporation pipe, a heat exchange pipe and a heat exchange pipe. In this embodiment, increased compressor 7, improved whole refrigeration, realized refrigeration cycle, but can discharge the high-temperature high-pressure return air, in order to retrieve it, the theory of operation in this embodiment is as follows:

the high-temperature high-pressure return air discharged by the compressor 7 is mixed with the return air in the evaporator 2, the medium-temperature high-temperature return air is obtained after the temperature reduction treatment of the condenser, and at the moment, the low-temperature low-pressure return air is obtained after the treatment of the expansion valve 8 and enters the evaporator 2 for recycling again.

Specifically, the expansion valve throttles the medium-temperature high-pressure liquid refrigerant into low-temperature low-pressure wet steam, then the refrigerant absorbs heat in the evaporator to achieve the refrigeration effect, and the expansion valve controls the flow of the valve through the change of the superheat degree at the tail end of the evaporator to prevent the phenomena of insufficient utilization of the area of the evaporator and cylinder knocking.

In this embodiment, not only the return air circulation but also the freon circulation is provided between the evaporator 2, the compressor 7 and the condenser 5, and the freon is placed in the evaporator 2 and one of the compressor 7 and the condenser 5, thereby realizing the whole freon cooling circulation.

Further, referring to fig. 1, the water replenishing device in this embodiment at least includes a first water cooler 9, and the external water source is directly delivered to the condenser 5 after passing through the first water cooler 9.

Further, still include catch basin 10, outside water source gets into catch basin 10 after the processing of second water chiller 11, and the process catch basin 10 back gets into in condenser 5, circulating pump 3 sets up between catch basin 10 and first water chiller 9.

The water in the condenser 5 can be discharged by the circulating water replenishing device, and can be recycled after being used. In this embodiment, a water pump 12 is disposed in the water collecting tank 10 for recycling water in the water collecting tank 10.

Example 4

Referring to fig. 2, the air cooler further comprises a moving vehicle 13, the moving vehicle 13 is provided with a vehicle head and a vehicle compartment, the evaporator 2 and the condenser 5 are fixed at the bottom of the vehicle compartment, the air cooler 4 is fixed in the vehicle compartment through a first support 14, and the installation height of the air cooler 4 is higher than or equal to the height of the vehicle head.

In this embodiment, the first support 14 may be a vertical rod, which serves only as a support, or a scaffold-like structure, which is fixed.

Further, the air duct 1 is fixed to the top of the vehicle head through a second support 15 with adjustable height, and the air duct 1 is connected with the air cooler 4 through a pipeline.

In this embodiment, the second bracket 15 may be a height-adjustable mounting bracket disclosed in patent No. ZL201821396138.8, wherein the ground corresponds to the bottom of the vehicle compartment in this application; or a height-adjustable forehead reinforcement support disclosed in patent No. ZL201821346225.2, and other height-adjustable support means in the prior art.

In this embodiment, the height of the second support 15 can be adjusted along with the difference in the height of the tunnel face 16, or the tunnel faces at different positions can be locally cooled by moving the position of the moving cart.

In this embodiment, the mobile vehicle may adopt a construction vehicle, a sprinkler body and other similar existing structures.

In the embodiment, the movable refrigeration cooling device is realized, and has the advantages that ventilation and cooling are convenient, timeliness and effectiveness can be guaranteed, the distance between the excavated tunnel face and the second lining concrete construction is about 50 meters, and the device realizes local cooling between the tunnel face and the second lining in a tunnel through continuous movement of an automobile along with tunneling. The temperature of the excavated tunnel face is reduced from 35 ℃ to about 28 ℃, and the working environment of workers is obviously improved.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A cooling device for a palm surface is characterized by comprising:

the air outlet of the air duct (1) is aligned to the palm surface and used for blowing air to the palm surface;

the evaporator (2) is used for emitting cold air, a cold air circulating system is formed between the evaporator (2) and the air cooler (4) through a pipeline and the circulating pump (3), and an air outlet of the air cooler (4) is communicated with the air duct (1);

the condenser (5) is used for generating cold air, and a return air circulating system is formed between the condenser (5) and the evaporator (2) to realize the treatment of return air;

still including being used for carrying out the moisturizing device of moisturizing to condenser (5), the moisturizing device passes through cooling water circulating pump (6) and outside water source, realizes the replenishment of moisture in condenser (5).

2. A device for reducing the temperature of a tunnel face according to claim 1, characterized in that the air cooler (4) is installed at a higher level than the evaporator (2), and the circulation pump (3) is used for conveying cold air emitted from the evaporator (2) into the higher air cooler (4).

3. The cooling device for the face of a person as claimed in claim 2, wherein the circulation pump (3) is provided with a coolant, and the coolant is one of water, saline water, ethylene glycol, propylene glycol solution, methylene chloride or trichloroethylene.

4. The temperature reduction device for the tunnel face according to claim 1, characterized by further comprising a compressor (7), wherein the compressor (7) is arranged between the evaporator (2) and the condenser (5), and the return air emitted by the evaporator (2) is processed by the compressor (7) and the condenser (5) and then flows back to the evaporator (2) again to form the return air circulation system.

5. The temperature reducing device for the tunnel face as claimed in claim 4, further comprising an expansion valve (8) arranged between the condenser (5) and the evaporator (2), wherein the expansion valve (8) is used for recycling return air processed by the compressor (7) and the condenser (5) to the evaporator (2) for recycling.

6. A device for reducing the temperature of a tunnel face as claimed in claim 1, characterized in that the water-replenishing device comprises at least a first water cooler (9), and the external water source is directly fed into the condenser (5) after passing through the first water cooler (9).

7. The temperature reduction device for the tunnel face according to claim 6, further comprising a water collection tank (10), wherein an external water source enters the water collection tank (10) after being treated by the second water cooler (11), and enters the condenser (5) after passing through the water collection tank (10), and the circulating pump (3) is arranged between the water collection tank (10) and the first water cooler (9).

8. The temperature reduction device for the tunnel face according to any one of claims 1 to 7, further comprising a moving vehicle (13), wherein the moving vehicle (13) is provided with a vehicle head and a vehicle compartment, the evaporator (2) and the condenser (5) are fixed at the bottom of the vehicle compartment, the air cooler (4) is fixed in the vehicle compartment through a first support (14), and the installation height of the air cooler (4) is higher than or equal to the height of the vehicle head.

9. The cooling device for tunnel surfaces according to claim 8, wherein the air duct (1) is fixed in the carriage through a second bracket (15) with adjustable height.