Blast dehumidification system

Abstract

The invention discloses a blast dehumidification system which comprises a recovery circulating device, a refrigeration circulating device and an air inlet channel, an air inlet filter, a pre-cooling part, a dehumidification part and a cold energy recovery part are sequentially connected in the air inlet channel, the pre-cooling part comprises a heat exchanger I, the cold energy recovery part comprises a heat exchanger II, the dehumidification part comprises a heat exchanger III, and the heat exchanger II comprises a heat exchanger III. The recovery circulating device comprises a recovery circulating pump, the recovery circulating pump is connected with a circulating pipeline, the first heat exchanger and the second heat exchanger are connected to the circulating pipeline in series, the circulating pipeline is filled with heat exchange media, the refrigeration circulating device comprises a condensation pipeline, and the condensation pipeline is connected with a condensate pump, the third heat exchanger and a refrigerator. The device has the advantages of being good in air treatment effect, high in working efficiency and low in operation cost.

Description

Technical Field

[0001] The invention belongs to the technical field of air treatment, and in particular relates to an air blast dehumidification system. Background Art

[0002] Blast furnace blower refers to a kind of power machinery that can collect part of the atmosphere and form a certain pressure, temperature and flow rate of blast furnace blast by increasing the air pressure, and then adjust the wind pressure and air volume according to the needs of the blast furnace road conditions and transport it to the blast furnace. Modern large and medium-sized blast furnaces generally use centrifugal blowers or axial flow blowers, and in recent years, they are generally driven by large-capacity synchronous motors. Blower plant is a plant used to accommodate and operate blast furnace blowers. The lubricating oil station (oil pump) and power oil station (oil pump) are generally used in conjunction with it in the plant. In summer, in order to reduce the humidity of the fan intake air and reduce the blast furnace coke ratio, the blower plant is also equipped with a corresponding blast dehumidification system, which can cool the fan intake air (air) to below the saturation temperature, condense and precipitate the moisture in the humid air, reduce the water content of the air, increase the air density, improve the quality and flow of the blower intake air, and reduce the unit energy consumption of the blower.

[0003] The shortcoming of the existing process of using grouting pipes to repair the waterproof layer is that, although the use of existing blast dehumidification equipment can reduce the humidity of the fan intake air and reduce the blast furnace coke ratio, the fan intake air (air) temperature also drops significantly during the dehumidification process, and cannot reach the wind temperature required by the blast furnace, resulting in an increase in the system load and affecting the blast furnace working efficiency; if a separate air heating device is set up, it will lead to increased costs and increased energy consumption. Summary of the invention

[0004] The purpose of the present invention is to provide a blast dehumidification system in view of the problems existing in the prior art, which has the advantages of good air treatment effect, high working efficiency and low operating cost.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a blast dehumidification system, including a recovery circulation device, a refrigeration circulation device and an air inlet channel, the air inlet channel is sequentially connected with an air inlet filter, a pre-cooling part, a dehumidification part and a cold recovery part, the pre-cooling part includes a heat exchanger 1, the cold recovery part includes a heat exchanger 2, the dehumidification part includes a heat exchanger 3, the recovery circulation device includes a recovery circulation pump, the recovery circulation pump is connected to a circulation pipe, the heat exchanger 1 and the heat exchanger 2 are connected in series on the circulation pipe, the circulation pipe is filled with heat exchange medium, the refrigeration circulation device includes a condensation pipe, the condensation pipe is connected with a condensation water pump, the heat exchanger 3 and the refrigerator.

[0006] In the above scheme, an air inlet filter is provided to filter the air entering the air inlet channel to ensure the quality of the air entering. The recovery circulation pump of the recovery circulation device is used to circulate the heat exchange medium in the circulation pipe. The heat exchange medium exchanges heat with the low-temperature air after dehumidification at the cold recovery part to avoid the temperature of the air finally discharged being too low. The low-temperature heat exchange medium flows to the pre-cooling part, and pre-cools the newly incoming air through the first heat exchanger to initially reduce the air temperature and improve the air dehumidification efficiency. The pre-cooled air goes to the dehumidification part for condensation and dehumidification. The pre-cooled air has a relatively low temperature and exchanges heat with the heat exchange medium in the second heat exchanger to raise the temperature before being discharged. While ensuring that the outlet temperature is moderate, the low temperature of the air after condensation is fully utilized to improve the air dehumidification efficiency. A refrigerator is provided to cool the condensing medium in the condensation pipe, and condensation and dehumidification are achieved by the condensing medium exchanging heat with the air at the third heat exchanger.

[0007] Furthermore, it includes a condensation return water device, which includes a return water pipe, which is connected to the dehumidification part, the water collecting tank, the refrigeration water supply tank and the condensation pipe in sequence, and a water collecting pump is arranged on the return water pipe, and the water collecting pump is located at the outlet of the water collecting tank.

[0008] A return water pipe is set to collect the condensed water at the dehumidification part and transport it to the water collecting tank. The condensed water in the water collecting tank is transported to the condensing pipe by the water collecting pump to supply the refrigeration mechanism with chilled water for air condensation and dehumidification.

[0009] Furthermore, the water collecting tank is connected to a refrigeration water supply tank, and a water supply pump is provided between the outlet of the refrigeration water supply tank and the condensation pipeline.

[0010] The condensed water is stored in a refrigeration water supply tank, and the condensed water in the refrigeration water supply tank is transported to the condensation pipeline by a water supply pump.

[0011] Furthermore, it comprises a filtering pipeline, a heat exchanger four is arranged at the filter, the water collecting tank, the heat exchanger four and the water collecting pump are connected in sequence through the filtering pipeline, and a valve is arranged on the filtering pipeline.

[0012] The condensed water in the water collecting tank is transported to the filter pipe and heat exchanger 4 through the water collecting pump to cool the air at the filter and improve the air condensation and dehumidification effect. The valve is used to control the on and off of the filter pipe.

[0013] Furthermore, a temperature tester, an upper liquid level switch and a lower liquid level switch are provided in the water collecting tank, the valve includes an electric valve 1 arranged between the heat exchanger 4 and the water collecting pump, an output pipe is provided at the water outlet end of the water collecting pump, and an electric valve 2 is provided on the output pipe, and the temperature tester, the upper liquid level switch and the lower liquid level switch, the electric valve 1 and the electric valve 2 are all electrically connected to the controller 2.

[0014] The upper temperature tester, liquid level switch and upper liquid level switch are used to detect the liquid level and condensate temperature in the water collecting tank in real time and feed back to the controller. The controller controls electric valve 1 and electric valve 2 to control the direction of condensate. When electric valve 1 is opened, condensate flows to heat exchanger 4. When electric valve 2 is opened, condensate flows out from the output pipe.

[0015] Furthermore, a liquid level switch 1 is provided at the refrigeration water supply tank, a water inlet pipe is provided at the water inlet end of the refrigeration water supply tank, an electric valve 4 is provided on the water inlet pipe, and an electric valve 3 located at the water inlet end of the refrigeration water supply tank is provided on the return water pipe, and the liquid level switch 1, electric valve 3 and electric valve 4 are all electrically connected to the controller 1.

[0016] The liquid level switch 1 is used to detect the page height in the refrigeration water supply tank in real time and feed it back to the controller 1. The controller 1 controls the opening and closing of the electric valve 3 and the electric valve 4. The water inlet pipe can be used to add normal temperature water to the refrigeration water supply tank and the refrigerant. The electric valve 3 can control the flow of condensed water to the refrigeration water supply tank.

[0017] Furthermore, a drain valve and a pressure sensor 2 are provided on the circulation pipeline, a circulation water supply pipeline is provided between the condensation pipeline and the circulation pipeline, an electric valve 5, a circulation water supply tank and a circulation water supply pump are provided on the circulation water supply pipeline, a liquid level switch 2 is provided at the circulation water supply tank, and the pressure sensor 2, the circulation water supply pump and the controller 3 are electrically connected.

[0018] The drain valve is used to drain the water in the circulation pipe during maintenance and sewage discharge. The circulation water supply pipe is used to add condensed water to the circulation pipe. The pressure sensor detects the pressure in the circulation pipe in real time and feeds it back to the controller three. The controller three controls the circulation water supply pump to supply water to the circulation pipe. The liquid level switch two is used to detect the liquid level in the circulation water supply tank.

[0019] Furthermore, the dehumidification part includes a dehumidification cavity, which is provided with an air inlet and an air outlet, the air inlet is connected to the pre-cooling part, the air outlet is connected to the cold recovery part, a plurality of vertical baffles are arranged in the dehumidification part, and the bottom of the dehumidification cavity is connected to the return water pipe.

[0020] Air condensation and dehumidification are achieved by cooling the interior of the dehumidification cavity through three pairs of heat exchangers. The air enters the dehumidification cavity from the air inlet after being pre-cooled by the pre-cooling part, and then flows out from the air outlet to the cold recovery part. A number of vertical baffles are set to absorb the condensed droplets in the air, so that the droplets fall to the bottom of the dehumidification cavity. The condensed water at the bottom of the dehumidification cavity flows out through the return pipe.

[0021] Furthermore, the vertical baffle includes a vertical upward baffle and a vertical downward baffle, and the vertical upward baffle and the vertical downward baffle are staggered to form a gas flow channel. A water hole is provided at the bottom of the vertical downward baffle, and an air inlet is provided at the bottom of the dehumidification cavity. An inlet pipe is provided at the air inlet, and a liquid blocking cover is provided on the top of the inlet pipe.

[0022] The vertical upward baffles and the vertical downward baffles are staggered to form an S-shaped gas flow channel, so that the liquid in the air can fully contact with the vertical baffles and be adsorbed on the vertical baffles. The liquid accumulated at the bottom of the dehumidification cavity flows out through the water holes to the return pipe. An inlet pipe and a liquid blocking cover are set at the air inlet to prevent condensate from flowing into the pre-cooling part.

[0023] A working method of the above-mentioned air blast dehumidification system, when the lower liquid level switch is at the low limit, electric valve one is closed, electric valve two is closed, and the water collecting pump stops running; when the lower liquid level switch is at the high limit, electric valve one is opened, the water collecting pump is started, and the condensed water circulates through the filter pipe, heat exchanger four, and water collecting tank, and the air and heat exchanger four perform heat exchange to reduce the inlet air temperature; when the upper liquid level switch is at the high limit or the water temperature of the water collecting tank is greater than the set high temperature, electric valve one is opened, electric valve two is opened, and the condensed water is circulated and discharged; when the water temperature of the water collecting tank is lower than the set low temperature and the upper liquid level switch is at the low limit, electric valve one is opened, electric valve two is closed, the water collecting pump is started, and the condensed water circulates through the filter pipe, heat exchanger four, and water collecting tank.

[0024] In the above scheme, when the lower liquid level switch is at the low limit, the water level in the water collecting tank is low. At this time, electric valve 1 and electric valve 2 are closed, waiting for the water level to rise; when the lower liquid level switch is at the high limit, the water collecting pump works to drive the condensed water to flow to the heat exchanger to cool the air; when the upper liquid level switch is at the high limit or the water temperature in the water collecting tank is greater than the set high temperature, the condensed water circulates and is discharged to facilitate the entry of low-temperature condensed water; when the water temperature in the water collecting tank is lower than the set low temperature and the upper liquid level switch is at the low limit, the water collecting pump works to drive the condensed water to flow to the heat exchanger to cool the air.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. After the air is filtered by setting an air inlet filter, the air is condensed and dehumidified by the refrigeration cycle device, and the recovery cycle device is used to absorb the cold air after dehumidification, so as to increase the air temperature at the air outlet to avoid the temperature being too low, and transfer the cold air to the front end of the pre-cooling part to achieve pre-cooling of the air, improve the condensation and dehumidification effect of the air, and achieve a good overall air treatment effect; 2. The recovery cycle device fully utilizes the coldness of the air after condensation and dehumidification to pre-cool the air before dehumidification, reducing the power consumption of the refrigeration cycle device and improving the working efficiency; 3. The cooling capacity of the condensed water generated during the dehumidification process can be utilized by using the condensation return device in conjunction with the filter pipe and the heat exchanger No. 4. The condensed water can be transported to the refrigeration cycle device for reuse, or transported to the heat exchanger No. 4 at the filter to cool the air, thereby improving the condensation and dehumidification effect of the air, reducing system power consumption, and reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A connection diagram of an air blast dehumidification system of the present invention; Figure 2 This is a working principle diagram of an air blast dehumidification system of the present invention; Figure 3 It is a structural schematic diagram of an air inlet channel in a blast dehumidification system of the present invention; Figure 4 This is a schematic diagram of the structure of the air inlet in a blast dehumidification system of the present invention; Figure 5 It is a structural schematic diagram of a vertical downward baffle in a blast dehumidification system of the present invention; In the figure: 1. air inlet channel; 2. air inlet filter; 3. pre-cooling unit; 4. dehumidification unit; 5. cold recovery unit; 6. heat exchanger 1; 7. heat exchanger 2; 8. heat exchanger 3; 9. heat exchanger 4; 10. recovery circulation pump; 11. circulation pipeline; 12. condensation pipeline; 13. condensation water pump; 14. refrigerator; 15. return water pipeline; 16. water collecting tank; 17. water collecting pump; 18. refrigeration water supply tank; 19. water supply pump; 20. filter pipeline; 21. temperature tester; 22. upper liquid level switch; 23. lower liquid level switch; 24. electric valve 1; 25. electric valve Movable valve 2; 26. Electric valve 3; 27. Electric valve 4; 28. Output pipe; 29. ​​Liquid level switch 1; 30. Water inlet pipe; 31. Drain valve; 32. Pressure sensor 1; 33. Pressure sensor 2; 34. Circulating water supply pipeline; 35. Electric valve 5; 36. Circulating water supply tank; 37. Circulating water supply pump; 38. Liquid level switch 2; 39. Dehumidification cavity; 40. Air inlet; 41. Air outlet; 42. Vertical baffle; 43. Vertical baffle; 44. Water hole; 45. Inlet pipe; 46. Liquid blocking cover; 47. Pillar; 48. Pipe installation hole. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the description of the present invention, it should be noted that the terms front, back, left, right, etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships in which the product is usually placed when in use. They are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0028] like Figure 1-5 As shown, a blast dehumidification system includes a recovery cycle device, a refrigeration cycle device and an air inlet channel 1, wherein the air inlet channel 1 is sequentially connected with an air inlet filter 2, a precooling part 3, a dehumidification part 4, and a cold recovery part 5, wherein the precooling part 3 includes a heat exchanger 1 6, the cold recovery part 5 includes a heat exchanger 2 7, and the dehumidification part 4 includes a heat exchanger 3 8, the recovery cycle device includes a recovery circulation pump 10, and the recovery circulation pump 10 is connected to a circulation pipe 11, the heat exchanger 1 6 and the heat exchanger 2 7 are connected in series on the circulation pipe 11, and the circulation pipe 11 is filled with a heat exchange medium, and the refrigeration cycle device includes a condensation pipe 12, and the condensation pipe 12 is connected with a condensation water pump 13, the heat exchanger 3 8 and a refrigerator 14.

[0029] In the above scheme, an air inlet filter 2 is provided to filter the air entering the air inlet channel 1 to ensure the quality of the air entering. The recovery circulation pump 10 of the recovery circulation device is used to circulate the heat exchange medium in the circulation pipe 11. The heat exchange medium exchanges heat with the low-temperature air after dehumidification at the cold recovery part 5 to avoid the temperature of the air finally discharged being too low. The low-temperature heat exchange medium flows to the pre-cooling part 3, and pre-cools the newly incoming air through the heat exchanger 1 6 to initially reduce the air temperature and improve the air dehumidification efficiency. The pre-cooled air goes to the dehumidification part 4 for condensation and dehumidification. The pre-cooled air has a relatively low temperature and exchanges heat with the heat exchange medium in the heat exchanger 2 7 to raise the temperature before being discharged. While ensuring that the outlet temperature is moderate, the low temperature of the air after condensation is fully utilized to improve the air dehumidification efficiency. A refrigerator 14 is provided to cool the condensing medium in the condensation pipe 12, and condensation and dehumidification are achieved by the condensing medium exchanging heat with the air at the heat exchanger 3 8.

[0030] This solution recovers the refrigeration surplus of the fan inlet air in the dehumidification system, increases the fan inlet air temperature, and reduces the energy consumption of the blast furnace. Heat exchangers 16, 2, 3, and 4 can use tubular heat exchangers.

[0031] This scheme is provided with a recycling circulation pump 10, which adds circulating medium (chilled water) to the pipeline through the circulating water supply tank 36 and the circulating water supply pump 37. After the pipeline medium is pressurized to a certain pressure through the recycling pump, it circulates inside the pipeline and the tubular heat exchanger. When the pressure P2 of the circulating pipeline 11 is lower than 0.15MPa, the circulating water supply pump 37 starts automatically, and when it is higher than 0.3MPa, the circulating water supply pump 37 stops automatically; when the float switch at the circulating water supply tank 36 is at the low limit, the electric valve 5 35 opens; when it is at the high limit, the electric valve 5 35 is closed, and the circulating water supply tank 36 is kept at a certain water level to replenish the circulating medium of the recycling circulation device in time. During the operation of the dehumidification system, the air is filtered by the air inlet filter 2, and then passes through the heat exchanger 1 6 and the heat exchanger 2 7 on the lower side of the recycling circulation device. The heat exchange medium of the recycling circulation device exchanges heat with the incoming air through the heat exchanger 1 6, reducing the air temperature entering the dehumidification section 4 to reduce the energy consumption of the dehumidification system. At this time, the temperature of the circulating medium of the recycling circulation device rises. After the incoming air is dehumidified by the dehumidification unit 4, its temperature is greatly reduced to 5~12℃, and then it enters the heat exchanger 2 7; the circulating medium temperature of the heat exchanger 2 7 on the upper side of the recovery circulation device is relatively high, and then it exchanges heat with the air dehumidified by the dehumidification unit 4, so that the temperature of the air entering the fan is increased. Through reciprocating circulation, the air heat energy can be effectively recovered and the fan inlet temperature can be increased.

[0032] This scheme is provided with a condensation return device, which consists of a water collection pump 17, a water collection tank 16 (with a float switch, a liquid level gauge, a thermal resistor, and an overflow pipe), a heat exchanger 4 9 (a tubular grille heat exchanger is used, and a flexible joint is used for connection, which is convenient for maintenance and disassembly), an electric valve and related pipes and valves. The heat exchanger 4 9 is arranged around the filter screen of the air inlet filter 2 or on the front and rear sides. After the air is dehumidified by the dehumidification unit 4, the condensed water in the air is collected to the water collection tank 16 through the pipe. When the lower float switch in the water collection tank 16 is at the low limit, the electric valve 1 24 is closed, the electric valve 2 25 is closed, and the water collection pump 17 stops running; when it is at the high limit, the electric valve 1 24 is opened, the electric valve 2 25 is closed, and the water collection pump 17 is started. The condensed water circulates through the pipe and the tubular grille heat exchanger, and the air exchanges heat with the condensed water through the tubular grille heat exchanger, which reduces the inlet air temperature. At this time, the condensed water temperature rises. When the upper float switch is at the high limit or the water temperature T in the condensate tank is greater than 26°C, the electric valve 1 24 opens and the electric valve 2 25 opens, and the condensate is sent to other users or discharged; when the water temperature T in the condensate tank is less than 15°C and the float switch 2 is at the low limit, the electric valve 1 24 opens and the electric valve 2 25 closes, and the condensate circulates internally and exchanges heat with the incoming air. When the upper liquid level switch 22 is at the high limit or the water temperature in the water collecting tank 16 is greater than the set high temperature, the electric valve 2 25 opens. The temperature can be set as needed. Through the above design, the residual cold of the condensate can be well recovered and the load of the refrigerator 14 can be reduced. In the embodiment, the bottom of the dehumidification part 4 is connected to the return pipe 15, and the high temperature is set to the water temperature T of the water collecting tank 16 greater than 26°C, and the low temperature is set to the water temperature of the water collecting tank 16 less than 15°C.

[0033] This system can also replenish the refrigeration water supply tank through the condensate recovery system to reduce the water supply to the plant. The refrigeration water supply tank 18 is equipped with a liquid level gauge and a float switch, and a pressure sensor 32 is set on the condensation pipe 12. When the pressure P1 of the condensation pipe 12 is lower than 0.15MPa, the water supply pump 19 starts automatically, and when it is higher than 0.3MPa, the water supply pump 19 stops automatically. At this time, the liquid level of the refrigeration water supply tank 18 drops. When the float switch 3 in the refrigeration water supply tank 18 is at the low limit, if the water collection pump 17 is running, the electric valve 3 26 is opened, the electric valve 4 27 is closed, and the condensate is used for water supply. Otherwise, the electric valve 4 27 is opened, the electric valve 3 26 is closed, and the water supply from the plant is used for water supply; when the float switch 3 is at the high limit, the electric valve 3 26 and the electric valve 4 27 are closed. Through this design, the amount of water supply in the plant can be effectively reduced, the discharge of condensate can be reduced, and the water balance inside the system can be achieved.

[0034] The condensing pipe 12 is filled with circulating cooling water. Circulating water can be selected as the heat exchange medium.

[0035] Furthermore, it includes a condensation return water device, which includes a return water pipe 15, and the return water pipe 15 is connected to the dehumidification part 4, the water collecting tank 16, the refrigeration water supply tank 18 and the condensation pipe 12 in sequence. A water collecting pump 17 is arranged on the return water pipe 15, and the water collecting pump 17 is located at the outlet of the water collecting tank 16.

[0036] A return water pipe 15 is provided to collect the condensed water at the dehumidification section 4 and transport it to a water collecting tank 16. The condensed water in the water collecting tank 16 is transported to the condensation pipe 12 by a water collecting pump 17 to be refrigerated by the refrigerator 14 to generate chilled water for air condensation and dehumidification.

[0037] Reduce the working energy consumption of refrigerant and improve the condensation effect on air.

[0038] Furthermore, the water collecting tank 16 is connected to a refrigeration water supply tank 18 , and a water supply pump 19 is provided between the outlet of the refrigeration water supply tank 18 and the condensation pipe 12 .

[0039] The condensed water is stored in the refrigeration water supply tank 18 , and the condensed water in the refrigeration water supply tank 18 is transported to the condensation pipe 12 by the water supply pump 19 .

[0040] Furthermore, it includes a filtering pipe 20, a heat exchanger 9 is provided at the filter, the water collecting tank 16, the heat exchanger 9, and the water collecting pump 17 are connected in sequence through the filtering pipe 20, and a valve is provided on the filtering pipe 20.

[0041] The condensed water in the water collecting tank 16 is transported to the filter pipe 20 and the heat exchanger 9 through the water collecting pump 17 to cool the air at the filter and improve the air condensation and dehumidification effect. The valve is used to control the on and off of the filter pipe 20.

[0042] Furthermore, a temperature tester 21, an upper liquid level switch 22 and a lower liquid level switch 23 are provided in the water collecting tank 16, and the valve includes an electric valve 1 24 arranged between the heat exchanger 4 9 and the water collecting pump 17, and an output pipe 28 is provided at the water outlet end of the water collecting pump 17, and an electric valve 2 25 is provided on the output pipe 28. The temperature tester 21, the upper liquid level switch 22 and the lower liquid level switch 23, the electric valve 1 24, and the electric valve 2 25 are all electrically connected to the controller 2.

[0043] The upper temperature tester 21, the liquid level switch and the upper liquid level switch 22 are used to detect the liquid level and the condensate temperature in the water collecting tank 16 in real time and feed back to the controller. The controller controls the electric valve 1 24 and the electric valve 2 25 to control the direction of the condensate. When the electric valve 1 24 is opened, the condensate flows to the heat exchanger 4 9. When the electric valve 2 25 is opened, the condensate flows out from the output pipe 28.

[0044] Float switches can be used as liquid level switches.

[0045] Furthermore, a liquid level switch 29 is provided at the refrigeration water supply tank 18, a water inlet pipe 30 is provided at the water inlet end of the refrigeration water supply tank 18, an electric valve 27 is provided on the water inlet pipe 30, and an electric valve 3 26 located at the water inlet end of the refrigeration water supply tank 18 is provided on the return water pipe 15, and the liquid level switch 29, the electric valve 3 26, and the electric valve 4 27 are all electrically connected to the controller 1.

[0046] The liquid level switch 29 is used to detect the page height in the refrigeration water supply tank 18 in real time and feed it back to the controller 1. The controller 1 controls the opening and closing of the electric valve 3 26 and the electric valve 4 27. The water inlet pipe 30 can be used to add normal temperature water to the refrigeration water supply tank 18 and the refrigerant. The electric valve 3 26 can control the flow of condensed water to the refrigeration water supply tank 18.

[0047] Furthermore, a drain valve 31 and a pressure sensor 33 are provided on the circulation pipe 11, a circulation water supply pipe 34 is provided between the condensation pipe 12 and the circulation pipe 11, an electric valve 35, a circulation water supply tank 36, and a circulation water supply pump 37 are provided on the circulation water supply pipe 34, a liquid level switch 38 is provided at the circulation water supply tank 36, and the pressure sensor 33 and the circulation water supply pump 37 are electrically connected to the controller 3.

[0048] The drain valve 31 is used to drain the water in the circulation pipe 11 during maintenance and sewage discharge. The circulation water supply pipe 34 is used to add condensed water to the circulation pipe 11. The pressure sensor detects the pressure in the circulation pipe 11 in real time and feeds it back to the controller 3. The controller 3 controls the circulation water supply pump 37 to work to supply water to the circulation pipe 11. The liquid level switch 2 38 is used to detect the liquid level in the circulation water supply tank 36.

[0049] The condensation pipe 12 and the circulation pipe 11 are provided with exhaust valves to exhaust the gas in the pipes.

[0050] Furthermore, the dehumidification section 4 includes a dehumidification cavity 39, and an air inlet 40 and an air outlet 41 are provided on the dehumidification cavity 39. The air inlet 40 is connected to the pre-cooling section 3, and the air outlet 41 is connected to the cold recovery section 5. A plurality of vertical baffles are arranged in the dehumidification section 4, and the bottom of the dehumidification cavity 39 is connected to the return water pipe 15.

[0051] Air condensation and dehumidification are achieved by cooling the interior of the dehumidification cavity 39 through heat exchanger 3 8. After being pre-cooled by the pre-cooling section 3, the air enters the dehumidification cavity 39 from the air inlet 40, and then flows out from the air outlet 41 to the cold recovery section 5. A number of vertical baffles are provided to absorb condensed droplets in the air so that the droplets fall to the bottom of the dehumidification cavity 39. The condensed water at the bottom of the dehumidification cavity 39 flows out through the return pipe 15.

[0052] Furthermore, the vertical baffle includes a vertical upward baffle 42 and a vertical downward baffle 43, and the vertical upward baffle 42 and the vertical downward baffle 43 are staggered to form a gas flow channel. A water hole 44 is provided at the bottom of the vertical downward baffle 43, and an air inlet 40 is provided at the bottom of the dehumidification cavity 39. An inlet pipe 45 is provided at the air inlet 40, and a liquid blocking cover 46 is provided at the top of the inlet pipe 45.

[0053] The vertical upward baffle 42 and the vertical downward baffle 43 are staggered to form an S-shaped gas flow channel, so that the liquid in the air is fully in contact with the vertical baffle and adsorbed on the vertical baffle. The liquid accumulated at the bottom of the dehumidification cavity 39 flows out to the return pipe 15 through the water hole 44. An inlet pipe 45 and a liquid blocking cover 46 are set at the air inlet 40 to prevent condensed liquid from flowing into the pre-cooling part 3.

[0054] The liquid blocking cover 46 includes a cover body and a support 47. The support 47 is arranged between the bottom of the cover body and the bottom surface of the dehumidification cavity 39. The vertical baffle 42 and the vertical downward baffle 43 are both provided with a pipe installation hole 48 for the main pipe of the heat exchanger 3 8 to pass through.

[0055] A working method of the above-mentioned air blast dehumidification system, when the lower liquid level switch 23 is at the low limit, the electric valve 1 24 is closed, the electric valve 25 is closed, and the water collecting pump 17 stops running; when the lower liquid level switch 23 is at the high limit, the electric valve 1 24 is opened, the water collecting pump 17 is started, and the condensed water circulates through the filter pipe 20, the heat exchanger 4 9, and the water collecting tank 16, the air and the heat exchanger 4 9 perform heat exchange, the inlet air temperature decreases, and the condensed water temperature increases at this time; when the upper liquid level switch 22 is at the high limit or the water temperature of the water collecting tank 16 is greater than the set high temperature, the electric valve 1 24 is opened, the electric valve 25 is opened, and the condensed water is circulated and discharged; when the water temperature of the water collecting tank 16 is lower than the set low temperature and the upper liquid level switch 22 is at the low limit, the electric valve 1 24 is opened, the electric valve 25 is closed, the water collecting pump 17 is started, and the condensed water circulates through the filter pipe 20, the heat exchanger 4 9, and the water collecting tank 16.

[0056] In the above scheme, when the lower liquid level switch 23 is at the low limit, the water level in the water collecting tank 16 is low. At this time, the electric valve 1 24 and the electric valve 2 25 are closed, waiting for the water level to rise; when the lower liquid level switch 23 is at the high limit, the water collecting pump 17 works to drive the condensed water to flow to the heat exchanger four 9 to cool the air; when the upper liquid level switch 22 is at the high limit or the water temperature in the water collecting tank 16 is greater than the set high temperature, the condensed water circulates and is discharged at the same time, facilitating the entry of low-temperature condensed water; when the water temperature in the water collecting tank 16 is lower than the set low temperature and the upper liquid level switch 22 is at the low limit, the water collecting pump 17 works to drive the condensed water to flow to the heat exchanger four 9 to cool the air.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blast dehumidification system, characterized in that: It includes a recovery cycle device, a refrigeration cycle device and an air inlet channel, wherein the air inlet channel is sequentially connected with an air inlet filter, a pre-cooling part, a dehumidification part and a cold recovery part, the pre-cooling part includes a heat exchanger 1, the cold recovery part includes a heat exchanger 2, the dehumidification part includes a heat exchanger 3, the recovery cycle device includes a recovery circulation pump, the recovery circulation pump is connected with a circulation pipeline, the heat exchanger 1 and the heat exchanger 2 are connected in series on the circulation pipeline, the circulation pipeline is filled with heat exchange medium, the refrigeration cycle device includes a condensation pipeline, the condensation pipeline is connected with a condensation water pump, the heat exchanger 3 and a refrigerator.

2. The air blast dehumidification system according to claim 1, characterized in that: It comprises a condensation water return device, which comprises a water return pipe, and the water return pipe is connected to the dehumidification part, the water collecting tank, the water collecting pump and the condensation pipe in sequence.

3. The air blast dehumidification system according to claim 2, characterized in that: The water collecting tank is connected to a refrigeration water supply tank, and a water supply pump is arranged between the outlet of the refrigeration water supply tank and the condensation pipeline.

4. The air blast dehumidification system according to claim 2, characterized in that: It comprises a filtering pipeline, wherein a heat exchanger 4 is arranged at the filter, the water collecting tank, the heat exchanger 4 and the water collecting pump are connected in sequence through the filtering pipeline, and a valve is arranged on the filtering pipeline.

5. The air blast dehumidification system according to claim 4, characterized in that: A temperature tester, an upper liquid level switch and a lower liquid level switch are arranged in the water collecting tank, the valve includes an electric valve 1 arranged between the heat exchanger 4 and the water collecting pump, an output pipe is arranged at the water outlet end of the water collecting pump, and an electric valve 2 is arranged on the output pipe. The temperature tester, the upper liquid level switch and the lower liquid level switch, the electric valve 1 and the electric valve 2 are all electrically connected to the controller 2.

6. The air blast dehumidification system according to claim 3, characterized in that: A liquid level switch 1 is provided at the refrigeration water supply tank, a water inlet pipe is provided at the water inlet end of the refrigeration water supply tank, an electric valve 4 is provided on the water inlet pipe, and an electric valve 3 located at the water inlet end of the refrigeration water supply tank is provided on the return water pipe. The liquid level switch 1, electric valve 3 and electric valve 4 are all electrically connected to the controller 1.

7. The air blast dehumidification system according to claim 2, characterized in that: The circulation pipeline is provided with a drain valve and a pressure sensor 2, a circulation water supply pipeline is provided between the condensation pipeline and the circulation pipeline, an electric valve 5, a circulation water supply tank and a circulation water supply pump are provided on the circulation water supply pipeline, a liquid level switch 2 is provided at the circulation water supply tank, and the pressure sensor 2, the circulation water supply pump and the controller 3 are electrically connected.

8. The air blast dehumidification system according to claim 7, characterized in that: The dehumidification part includes a dehumidification cavity, which is provided with an air inlet and an air outlet. The air inlet is connected to the pre-cooling part, and the air outlet is connected to the cold recovery part. A plurality of vertical baffles are arranged in the dehumidification part, and the bottom of the dehumidification cavity is connected to the return water pipe.

9. The air blast dehumidification system according to claim 8, characterized in that: The vertical baffle comprises a vertical upward baffle and a vertical downward baffle, which are staggered to form a gas flow channel. A water hole is provided at the bottom of the vertical downward baffle, and an air inlet is provided at the bottom of the dehumidification cavity. An inlet pipe is provided at the air inlet, and a liquid blocking cover is provided on the top of the inlet pipe.

10. A method for operating the air blast dehumidification system as claimed in claim 5, characterized in that: When the lower liquid level switch is at the low limit, electric valve one is closed, electric valve two is closed, and the water collection pump stops running; when the lower liquid level switch is at the high limit, electric valve one is opened, the water collection pump is started, and the condensed water circulates through the filter pipe, heat exchanger four, and water collection tank, and the air exchanges heat with heat exchanger four to reduce the inlet air temperature; when the upper liquid level switch is at the high limit or the water temperature in the water collection tank is greater than the set high temperature, electric valve one is opened, electric valve two is opened, and the condensed water is circulated and discharged at the same time; when the water temperature in the water collection tank is lower than the set low temperature and the upper liquid level switch is at the low limit, electric valve one is opened, electric valve two is closed, the water collection pump is started, and the condensed water circulates through the filter pipe, heat exchanger four, and water collection tank.

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