CN112984871B - A high-efficiency water-saving countercurrent water circulation heat exchange condensation method - Google Patents

Abstract

The invention relates to the technical field of physical condensation, in particular to a high-efficiency water-saving countercurrent circulating heat exchange type condensation method, which comprises the following steps: precooling → condensing → vapor recovery → gas flow → liquid recovery → extrusion recovery, wherein a water collecting unit with a water collecting function is arranged on the water collector, a large amount of water drops are collected and concentrated by the water collecting unit, then the water collecting unit is extruded, so that the collected water drops are released at one time, and a flow guide system is arranged on the heat exchanger to separate and guide the water vapor and the liquid drops generated on the cooling pipe to the water collecting unit for condensation and collection, so that the liquid is retained as much as possible, and the technical problem that the water collecting and collecting effects of the existing water collector are not ideal is solved.

Description

A high-efficiency water-saving countercurrent water circulation heat-exchange condensation method

technical field

The invention relates to the technical field of physical condensation, in particular to a high-efficiency water-saving countercurrent water circulation heat-exchange condensation method.

Background technique

In modern society, the application of refrigeration technology has involved all sectors of the national economy and people's daily life. However, my country's water resources are scarce, especially under the situation of increasingly tense power resources in recent years, there are higher requirements for the energy saving of refrigeration systems. According to the different cooling medium and cooling method, commonly used condensers can be generally divided into water-cooled, air-cooled and evaporative. The evaporative condenser uses spray water as the cooling medium. The water forms a water film outside the coil and exchanges heat with the process fluid in the coil. After absorbing heat, the temperature rises, and part of the cooling water vaporizes to form water vapor, which is taken away by evaporation. A large amount of heat is absorbed by the fan and discharged into the atmosphere, and the excess water on the heat exchanger will be collected into the sump, and then recycled through the water pump and return pipe. However, when the actual condenser is working, the water on the surface of the heat exchanger will Evaporation becomes water vapor and is discharged, and there are a large number of small water droplets in the water vapor in the atomized state. These small water droplets directly escape with the water vapor, so the water loss in the water collection tank is very fast, and frequent water replenishment is required. , resulting in waste of cooling water.

The patent document with the patent number CN201510596128.3 discloses a water circulation evaporative heat exchange cooling type condenser, which includes a condenser shell, a heat exchanger is arranged in the middle part of the condenser shell, and an upper side of the heat exchanger is provided with The liquid inlet pipe, the lower end side of the heat exchanger is provided with a liquid outlet pipe, the upper end of the heat exchanger is provided with a water distribution pipe in the condenser shell, the lower side of the water distribution pipe is evenly provided with a number of nozzles, and the top of the condenser shell is provided with Exhaust fan, the lower end of the condenser shell is provided with an air intake grille, the bottom of the condenser shell is provided with a water collection tank, and the side of the condenser shell is provided with a return pipe, the lower end of the return pipe is connected with the water collection tank, and the upper end of the return pipe is connected with the water distribution pipe , the return pipe is provided with a water pump, and the upper side of the water distribution pipe is provided with a water collector.

However, the water collecting effect of the water collector disclosed in the above technical solution is not ideal, and the water vapor and droplets generated at the cooling pipe are discharged upward with the action of the exhaust fan, which brings great difficulty to the collection of the droplets.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a high-efficiency and water-saving countercurrent water circulation heat-exchange condensation method. By using a water collector to set a water collection unit with a water collection function, the water collection unit is used to collect and concentrate a large number of water droplets, and then By squeezing the water collection unit, the collected water droplets are released at one time, and a diversion system is arranged on the heat exchanger to separate the water vapor and droplets generated on the cooling pipe and guide it to the water collection unit. , carry out condensation collection, retain liquid as much as possible, and solve the technical problem that the existing water collectors have unsatisfactory water collection and water collection effects.

To achieve the above object, the present invention provides the following technical solutions:

A high-efficiency water-saving countercurrent water circulation heat-exchange condensation method, comprising the following steps:

Step 1, pre-cooling, the process fluid is input into the pre-cooling pipe in the pre-cooling system located at the top position of the condenser shell, and the heat radiation fins on the pre-cooling pipe radiate outward, and the inside of the pre-cooling pipe is radiated. The process fluid is pre-cooled;

Step 2: Condensing, the pre-cooled process fluid is transferred into the heat exchange tube through the liquid inlet pipe, and the water distribution pipe located above the liquid inlet pipe sprays cooling water to the heat exchange tube through the nozzle, and the process fluid in the heat exchange tube is sprayed. Perform heat exchange condensation, and the condensed process fluid is output from the liquid outlet pipe;

Step 3, water vapor recovery, in the second step, the water vapor formed by the cooling water exchanging and condensing the process fluid in the heat exchange tube is collected by the rotating guide tube in the guide unit;

Step 4, the gas flows, the exhaust fan starts to inhale air from the air inlet grille at the lower part of the condenser shell, and discharges it from the exhaust port at the top of the condenser shell;

Step 5, recovery of stagnant liquid, in the step 4, in the process of gas flow, water vapor and droplets are taken away from the heat exchange tube, and when the gas passes through the water collector, the water vapor and droplets move along the The corrugated plate in the water collector is transported upward, the droplets are retained by the arc-shaped water collection plate, and the retained droplets flow down to the water collection pipe of the water collection unit, and are absorbed by the sponge column in the water collection pipe. The water vapor collected by the diversion unit in the synchronized step 3 is diverted to the sponge column; and

Step 6: Squeeze recovery, the extrusion heads on both sides of the water collecting pipe are driven by the driving unit that drives the diversion unit to squeeze the sponge column in the water collecting pipe, so that the cooling water adsorbed in the sponge column is squeezed out, along the The corrugated plates flow countercurrently downward.

As an improvement, in the first step, the radiating fins are rotatably sleeved on the pre-cooling pipes, and the radiating fins are driven to rotate by the airflow generated by the exhaust fan.

As an improvement, in the second step, a heat exchanger is arranged at the heat exchange tube, and the heat exchanger includes a number of heat exchange plates distributed vertically and parallel, and cooling gaps are arranged between the heat exchange plates. There are several parallel fluid channels in the heat plate, all the fluid channels are connected in turn to form a square wave channel, the liquid inlet pipe is located at the inlet of the square wave channel on each heat exchange plate, and the liquid outlet pipe is located in each At the outlet of the square wave channel on the heat exchange plate, a heat exchange packing plate is arranged in the cooling gap. The heat exchange packing plate is formed by superimposing two trapezoidal corrugated packing plates. There are several support columns.

As an improvement, in the second step, the heat exchange tubes are arranged in a serpentine shape, and the heat exchange tubes are arranged in a staggered arrangement along the axial direction of the liquid inlet tube.

As an improvement, in the second step, the cooling water that has completed the condensation work falls into the water collecting tank at the bottom of the condenser shell, and is pumped to the water distribution pipe by the circulating return system installed on the condenser shell for recycling. .

As an improvement, in the third step, the flow guiding unit includes:

A guide pipe, the guide pipe is hollow, the guide pipe is installed on the condenser shell, and the guide pipe is communicated with the water collecting unit through a hose, and the guide pipe is The side wall is provided with an air inlet;

a cover plate, the cover plate is arranged in an arc shape, and the cover plate is rotatably mounted on the air inlet;

The rotary sealing joint is symmetrically installed on both sides of the guide pipe in the axial direction, and the rotating sealing joint is arranged between the guide pipe and the hose.

As an improvement, in the third step, the diversion unit is driven to operate by a drive unit, and the drive unit includes:

A driven gear, the driven gear is sleeved on any one of the corresponding guide tubes;

a driving motor, the driving motor is mounted on the condenser housing, and the driving motor is provided with a driving gear corresponding to the driven gear; and

A belt drive group, the belt drive group drives and connects the adjacent guide pipes to drive the guide pipes to rotate synchronously.

As an improvement, in the fourth step, a heat exchange filler body is provided at the air intake grille, and the heat exchange filler body is arranged in a honeycomb shape.

As an improvement, in the step 5, the water collecting unit includes:

A water collection pipe, the water collection pipe is integrally connected with the corrugated plate along the length direction of the corrugated plate, the water collection pipe is arranged in the shape of a circular tube, and the side wall of the water collection pipe that is not connected with the corrugated plate is provided with a several through holes;

a sponge column, the sponge column is inserted in the water collecting pipe, and the sponge column absorbs water vapor through the through hole;

The extrusion head is symmetrically installed on both sides of the water collection pipe in the axial direction, the extrusion head pushes and squeezes the sponge column toward the water collection pipe, and the extrusion head is hollow inside, and communicated with the flow guiding unit through a hose;

a fixing seat, the fixing seat is arranged corresponding to the extrusion head, and is located on the side of the extrusion head away from the water collecting pipe, and the extrusion head is slidably installed on the fixing seat;

a return spring, the return spring is arranged in conflict between the extrusion head and the fixing seat; and

A transmission connection group, the transmission connection group is in transmission connection with the drive unit, and the drive unit drives the extrusion head to slide along the fixed seat.

As an improvement, the water collecting unit also includes:

Water collecting plate, the water collecting plate is rotatably installed on the corrugated plate, the water collecting plate is arranged in an arc shape, and the water collecting plate and the corrugated plate are in contact with each other at the angle position to drive the water collecting plate elastic a spring plate for reset; and

The plug is installed on the extrusion head, the plug moves synchronously with the extrusion head, and the plug is inserted into the angle between the water collecting plate and the corrugated plate to drive the water collecting plate Open.

The beneficial effects of the present invention are:

(1) In the present invention, a water collecting unit with a water collecting function is arranged on the water collecting device, and a large number of water droplets are collected and concentrated by using the water collecting unit, and then the collected water droplets are one-time by squeezing the water collecting unit. It is released, and a diversion system is installed on the heat exchanger to separate and divert the water vapor and droplets generated on the cooling pipe to the water collection unit for condensation and collection, so that the liquid can be retained as much as possible to solve the existing collection. The technical problems that the water collecting and collecting effect of the water device are not ideal;

(2) In the present invention, the liquid droplets collected by the water collecting plate are concentratedly adsorbed by the sponge column in the water collecting unit. After the absorbed droplets are accumulated to a certain amount, the sponge column is squeezed to make the liquid adsorbed by the sponge column. The droplets are released at one time. Since the droplets are concentrated and then released after concentration, the water flow is generated and will not be affected by the wind force of the exhaust fan;

(3) The present invention blocks the sponge column by using the opening of the water collecting plate, and reduces the interference of the water flow generated by the extrusion of the sponge column by the airflow of the exhaust fan, so that the water flow can flow downward more smoothly, which is more conducive to the retention of the cooling liquid;

(4) In the present invention, through the rotation of the guide pipe, the air inlet on the guide pipe is opened when it is located under the guide pipe, and the water vapor moves upward, enters the guide pipe, and is transferred to the sponge column through the guide pipe. It is adsorbed at the place, and the liquid entering the guide tube still moves downwards and acts on the cooling work;

(5) In the present invention, by setting up a pre-cooling pipe, the cooling liquid flowing in the pre-cooling pipe is first cooled by the wind power of the exhaust fan, so as to improve the cooling efficiency of the water circulation counter-current heat-exchange condenser as much as possible, so that the water utilization rate under a single condensing operation is improved. While reducing as much as possible, try to retain the coolant as much as possible;

(6) In the present invention, the radiating fins on the pre-cooling pipe for heat dissipation are rotated and arranged, and driven by the wind of the exhaust fan, the radiating fins are rotated, and the rotating radiating fins can more effectively conduct heat convection, and at the same time, It can make the heat dissipation of each part of the heat dissipation fin more even, and pre-cool the coolant in the pre-cooling pipe evenly;

(7) In the present invention, the heat exchange tubes are arranged in a staggered manner, and the distance between the heat exchange tubes is enlarged, so that during the condensation process of the heat exchange tubes, the water vapor generated can be smoothly discharged upward, and will not be stored in the upper part. The heat exchange tube is blocked.

To sum up, the invention has the advantages of high degree of automation, high cycle utilization rate, high cooling efficiency, and high liquid stagnation efficiency, and is especially suitable for the technical field of condensing machinery structure.

Description of drawings

1 is a schematic flowchart of a method according to an embodiment of the present invention;

2 is a schematic diagram of the three-dimensional structure of Embodiment 2 of the present invention;

Fig. 3 is the internal structure schematic diagram of the present invention;

FIG. 4 is a schematic diagram of the three-dimensional structure of the heat exchange tube of the present invention;

5 is a schematic diagram of the structure of the water distribution pipe position of the present invention;

Fig. 6 is the front structure schematic diagram of the water collector of the present invention;

Fig. 7 is a schematic diagram of the three-dimensional structure of the water collecting unit of the present invention;

Fig. 8 is the enlarged schematic diagram of the structure at place A in Fig. 7;

Fig. 9 is the cross-sectional structural schematic diagram of the water collecting unit of the present invention;

Figure 10 is a schematic diagram two of the three-dimensional structure of the water collecting unit of the present invention;

Figure 11 is a schematic diagram of the three-dimensional structure of the transmission connection group of the present invention;

Figure 12 is a schematic cross-sectional structural diagram of the extrusion head of the present invention;

FIG. 13 is a schematic three-dimensional structure diagram of the diversion system of the present invention;

14 is a schematic diagram of the three-dimensional structure of the drive unit of the present invention;

FIG. 15 is a schematic diagram of the three-dimensional structure of the guide tube of the present invention. .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

Example 1:

As shown in Figure 1, a high-efficiency water-saving countercurrent water circulation heat-exchange condensation method includes the following steps:

Step 1, pre-cooling, the process fluid is input into the pre-cooling pipe 31 in the pre-cooling system 3 located at the top position of the condenser shell 1, and the heat radiation is carried out by the radiating fins 32 on the pre-cooling pipe 31, Pre-cooling the process fluid in the pre-cooling pipe 31;

Step 2: Condensing, the pre-cooled process fluid is transferred to the heat exchange pipe 14 through the liquid inlet pipe 12, and the cooling water is sprayed to the heat exchange pipe 14 by the water distribution pipe 15 located above the liquid inlet pipe 12 through the nozzle 151, The process fluid in the heat exchange pipe 14 is subjected to heat exchange and condensation, and the condensed process fluid is output from the liquid outlet pipe 13;

Step 3, water vapor recovery, in the second step, the water vapor formed by the cooling water exchanging and condensing the process fluid in the heat exchange pipe 14 is collected by the rotating guide pipe 411 in the guide unit 41;

Step 4, the gas flows, the exhaust fan 16 starts to inhale air from the air intake grille 17 at the lower part of the condenser shell 1, and discharges it from the exhaust port at the top of the condenser shell 1;

Step 5, recovery of stagnant liquid, in the step 4, in the process of gas flow, water vapor and liquid droplets are taken away from the heat exchange tube 14, and when the gas passes through the water collector 2, the water vapor and liquid droplets move along As the corrugated plate 21 in the water collector 2 is transported upward, the droplets are retained by the arc-shaped water collection plate 24, and the retained droplets flow down to the water collection pipe 231 of the water collection unit 23, and are collected by the The sponge column 233 in the water pipe 231 is absorbed, and the water vapor collected by the diversion unit 41 in the synchronized step 3 is diverted to the sponge column 233; and

Step 6: Squeeze and recover, the extrusion heads 234 on both sides of the water collecting pipe 231 are driven by the driving unit 42 of the driving diversion unit 41 to squeeze the sponge column 233 in the water collecting pipe 231, so that the sponge column 233 is adsorbed The cooling water is extruded and flows downward along the corrugated plate 21 .

Wherein, in the first step, the radiating fins 32 are rotatably sleeved on the pre-cooling pipes 31 , and the radiating fins 32 are driven to rotate by the airflow generated by the exhaust fan 16 .

Further, in the second step, a heat exchanger 11 is provided at the heat exchange tube 14, and the heat exchanger 11 includes a plurality of vertically parallel heat exchange plates, with cooling gaps between the heat exchange plates, The heat exchange plate is provided with a number of parallel fluid channels, all the fluid channels are connected in turn to form a square wave channel, the liquid inlet pipe 12 is located at the inlet of the square wave channel on each heat exchange plate, and the outlet The liquid pipe 13 is located at the outlet of the square wave channel on each heat exchange plate. The cooling gap is provided with a heat exchange packing plate. The heat exchange packing plate is formed by superimposing two trapezoidal corrugated packing plates. The trapezoidal corrugated packing plate There are several support columns on the top surface of the

Preferably, in the second step, the heat exchange tubes 14 are arranged in a serpentine shape, and the heat exchange tubes 14 are arranged in a staggered arrangement along the axial direction of the liquid inlet tube 12 .

In addition, in the second step, the cooling water that has completed the condensation work falls into the sump 18 at the bottom of the condenser shell 1, and is pumped to the cloth by the circulating return system 19 installed on the condenser shell 1. The water pipe 15 is recycled.

Preferably, in the third step, the flow guiding unit 41 includes:

The guide pipe 411, the guide pipe 411 is hollow, the guide pipe 411 is installed on the condenser shell 1, and the guide pipe 411 is connected with the water collecting unit 23 through a hose , and an air inlet 412 is opened on the side wall of the guide tube 411;

A cover plate 413, the cover plate 413 is arranged in an arc shape, and the cover plate 413 is rotatably mounted on the air inlet 412;

The rotary sealing joint 414 is symmetrically installed on both sides of the guide pipe 411 in the axial direction, and the rotating sealing joint 414 is arranged between the guide pipe 411 and the hose.

In addition, in the third step, the guide unit 41 is driven by the drive unit 42 to operate, and the drive unit 42 includes:

A driven gear 421, the driven gear 421 is sleeved on any corresponding guide tube 411;

a driving motor 422, the driving motor 422 is mounted on the condenser housing 1, and the driving motor 422 is provided with a driving gear 423 corresponding to the driven gear 421; and

The belt drive group 424 is connected to the adjacent guide pipes 411 by driving, and drives the guide pipes 411 to rotate synchronously.

Preferably, in the fourth step, a heat exchange filler body 171 is provided at the air intake grill 17, and the heat exchange filler body 171 is arranged in a honeycomb shape.

Preferably, in the step 5, the water collecting unit 23 includes:

The water collecting pipe 231, the water collecting pipe 231 is integrally connected with the corrugated plate 21 along the length direction of the corrugated plate 21, the water collecting pipe 231 is arranged in the shape of a circular tube, and the water collecting pipe 231 is not connected with the corrugated plate 21 A number of through holes 232 are provided through the side wall of the ;

a sponge column 233, the sponge column 233 is inserted in the water collecting pipe 231, and the sponge column 233 absorbs water vapor through the through hole 232;

The extrusion head 234 is symmetrically installed on both sides of the water collecting pipe 231 in the axial direction. The extrusion head 234 pushes and squeezes the sponge column 233 toward the water collecting pipe 231, and the extrusion The head 234 is hollow inside, and communicates with the guide unit 41 through a hose;

A fixing seat 235, the fixing seat 235 is arranged corresponding to the pressing head 234, and is located on the side of the pressing head 234 away from the water collecting pipe 231, and the pressing head 234 is slidably mounted on the fixing seat 235;

a return spring 236, the return spring 236 is arranged in a conflict between the pressing head 234 and the fixing seat 235; and

The transmission connecting group 237 is connected to the driving unit 42 in a driving manner, and the driving unit 42 drives the extrusion head 234 to slide along the fixing seat 235 .

In addition, the water collecting unit 23 also includes:

The water collecting plate 238, the water collecting plate 238 is rotatably installed on the corrugated plate 21, the water collecting plate 238 is arranged in an arc, and the water collecting plate 238 and the corrugated plate 21 are installed against the angle position of the driver. a spring plate for elastic return of the water collecting plate 238; and

The plug 239, the plug 239 is installed on the extrusion head 234, the plug 239 moves synchronously with the extrusion head 234, and the plug 239 is inserted into the angle between the water collecting plate 238 and the corrugated plate 21 Inside, the water collecting plate 238 is driven to open.

Example 2:

As shown in FIG. 2 to FIG. 15, a high-efficiency water-saving countercurrent water circulation heat-exchange condensation method includes a condenser shell 1, and further includes:

A heat exchanger 11, the heat exchanger 11 is located in the middle of the condenser shell 1 in the height direction;

a liquid inlet pipe 12, the liquid inlet pipe 12 is arranged in the condenser shell 1, and the liquid inlet pipe 12 is located above the upper end face of the heat exchanger 11;

The liquid outlet pipe 13 is arranged in the condenser shell 1, and the liquid outlet pipe 13 is located below the lower end surface of the heat exchanger 11. The liquid outlet pipe 13 is connected to the inlet and outlet pipes 13. A heat exchange tube 14 is arranged in communication between the liquid tubes 12;

a water distribution pipe 15, the water distribution pipe 15 is arranged in the condenser shell 1, and a plurality of nozzles 151 are evenly distributed on the lower side of the water distribution pipe 15, and the nozzles 151 spray cooling liquid to the heat exchange pipe 14;

an exhaust fan 16, the exhaust fan 16 is arranged at the opening at the top of the condenser housing 1;

The intake grill 17 is opened on the side wall of the condenser housing 1, the intake grill 17 is located below the liquid outlet pipe 13, and the intake grill 17 A heat exchange filler body 171 is arranged at the place;

A water collecting tank 18, the water collecting tank 18 is arranged at the bottom of the condenser shell 1, the heat exchange packing body 171 is arranged to cover the opening of the water collecting tank 18, and the water collecting tank 18 and the water distribution pipe 15 are connected. It is communicated and set through the circulation return system 19;

The water collector 2, the water collector 2 is arranged between the water distribution pipe 15 and the exhaust fan 16, the water collector 2 includes a plurality of corrugated plates 21 arranged in a wave shape and connected to the corrugated plates 21 into one body The connecting column 22 is provided, a water collecting unit 23 is provided at the trough of the corrugated plate 21, and an arc-shaped water collecting plate 24 is provided at the crest of the corrugated plate 21, and the water collecting unit 23 is used for collecting droplets retained by the water collection plate 24; and

The diversion system 4, the diversion system 4 is penetrated on the heat exchanger 11, and the diversion system 4 includes a diversion unit 41 arranged in a hollow and a driving unit 42 that drives the diversion unit 41 to rotate. The diversion unit 41 is arranged in communication with the water collecting unit 23 , and the driving unit 42 drives the water collecting unit 23 to operate synchronously.

Wherein, the heat exchange filler body 171 is arranged in a honeycomb shape.

Further, the heat exchanger 11 includes a plurality of vertically parallel heat exchange plates, cooling gaps are arranged between the heat exchange plates, and a plurality of parallel fluid channels are arranged in the heat exchange plates, and all the fluid channels are arranged in sequence. Connected to form a square wave channel, the liquid inlet pipe 12 is located at the inlet of the square wave channel on each heat exchange plate, and the liquid outlet pipe 13 is located at the outlet of the square wave channel on each heat exchange plate, so The cooling gap is provided with a heat exchange packing plate, the heat exchange packing plate is formed by stacking two trapezoidal corrugated packing plates, and a plurality of support columns are arranged on the top surface of the trapezoidal corrugated packing plate.

It should be noted that when the exhaust fan is turned on, the water pump on the return pipe is turned on, and the cooling water in the water distribution pipe is sprayed from the nozzle to the cooling gap in the heat exchanger, and the cooling water flows down the surface of the heat exchange packing plate and the heat exchange plate. The flow forms a water film, the outside air is taken in from the air intake grille, the air flow passes through the heat exchange packing body, the heat exchanger, the water collector, and the cooling fins and then is discharged from the top, and the high-temperature process fluid first enters the pre-cooling pipe 31 for Pre-cooling, the temperature of the process fluid after pre-cooling is lower than 70 ℃, so as to avoid the easy fouling point of water, slow down the fouling of the outer wall of the heat exchange plate and the wall of the fluid channel, and the process fluid after the pre-cooling of the pre-cooling pipe enters the inlet. The liquid pipe 12 then enters the square wave channel in each heat exchange plate respectively. The process fluid transfers heat to the water film through the heat exchange plate, and the air passes through the cooling gap to promote the rapid evaporation of the water film, thereby taking away the heat to achieve the condensation effect. After the process fluid is cooled, it is discharged from the liquid outlet pipe. The circulating water with a higher temperature that is not evaporated in the cooling gap flows to the heat exchange packing body. The temperature of the circulating water flowing into the water collecting tank is close to the temperature of the cooling water in the water distribution pipe, and the water in the water collecting tank enters the water distribution pipe for recycling, which improves the heat exchange between the circulating water and the heat exchanger. When the liquid level inside is lower than a certain value, the floating ball valve at the water replenishment port will be automatically opened for replenishment; multiple heat exchange plates form a heat exchanger, the surface area of the square wave channel in the heat exchange plate of the same volume is larger than that of the coil, and the cooling efficiency is higher than that of the coil. The coil is high, compact in structure, small in size, and more convenient to clean.

The structures of the heat exchanger 11 and the heat exchange packing body 171 are all consistent with the structures of the heat exchanger and the heat exchange packing body described in the comparative documents in the background art.

As a preferred embodiment, the heat exchange tube 14 is arranged in a serpentine shape, the heat exchange tube 14 is arranged through the heat exchanger 11 , and the heat exchange tube 14 is along the axial direction of the liquid inlet tube 12 . Staggered arrangement settings.

It should be noted that the staggered arrangement of the heat exchange tubes 14 increases the spacing between the heat exchange tubes 14 so that the water vapor generated during the condensation process of the heat exchange tubes 14 can be smoothly discharged upwards without It is blocked by the heat exchange tubes 14 existing in the upper part.

As a preferred embodiment, a pre-cooling system 3 is provided above the liquid inlet pipe 12, and the pre-cooling system 3 includes:

a pre-cooling pipe 31, the pre-cooling pipe 31 is arranged in a U shape, and the pre-cooling pipe 31 is communicated with the liquid inlet pipe 12; and

The radiating fins 32 and a plurality of the radiating fins 32 are arranged on the pre-cooling pipe 31 at equal distances along the axial direction of the pre-cooling pipe 31 .

Further, the heat dissipation fins 32 are arranged in a fan blade shape, and the heat dissipation fins 32 are rotatably sleeved on the pre-cooling pipes 31 .

It should be noted that, by rotating the radiating fins 32 on the pre-cooling pipe 31 for heat dissipation, driven by the wind of the exhaust fan, the radiating fins 32 are rotated, and the rotating radiating fins 32 can more effectively dissipate heat. Convection, and at the same time, can make the heat dissipation of each part of the heat dissipation fins 32 more even, and pre-cool the coolant in the pre-cooling pipe 31 in a balanced manner.

As a preferred embodiment, the circulation return system 19 includes:

A return pipe 191, the return pipe 191 is arranged to communicate with the water collecting tank 18 and the water distribution pipe 15;

a return pump 192, the return pump 192 is disposed on the return pipe 191, and the return pump 192 pumps the cooling liquid in the water collecting tank 18 to the water distribution pipe 15; and

The electronic water descaling device 193 is disposed on the return pipe 191 , and the electronic water descaling device 193 filters the cooling liquid flowing in the return pipe 191 .

As a preferred embodiment, the water collecting unit 23 includes:

The water collecting pipe 231, the water collecting pipe 231 is integrally connected with the corrugated plate 21 along the length direction of the corrugated plate 21, the water collecting pipe 231 is arranged in the shape of a circular tube, and the water collecting pipe 231 is not connected with the corrugated plate 21 A number of through holes 232 are provided through the side wall of the ;

a sponge column 233, the sponge column 233 is inserted in the water collecting pipe 231, and the sponge column 233 absorbs water vapor through the through hole 232;

The extrusion head 234 is symmetrically installed on both sides of the water collecting pipe 231 in the axial direction. The extrusion head 234 pushes and squeezes the sponge column 233 toward the water collecting pipe 231, and the extrusion The head 234 is hollow inside, and communicates with the guide unit 41 through a hose;

A fixing seat 235, the fixing seat 235 is arranged corresponding to the pressing head 234, and is located on the side of the pressing head 234 away from the water collecting pipe 231, and the pressing head 234 is slidably mounted on the fixing seat 235;

a return spring 236, the return spring 236 is arranged in a conflict between the pressing head 234 and the fixing seat 235; and

The transmission connecting group 237 is connected to the driving unit 42 in a driving manner, and the driving unit 42 drives the extrusion head 234 to slide along the fixing seat 235 .

The transmission connection group 237 includes a rack 2371, a gear 2372, a bevel gear pair 2373 and a belt transmission pair 2374. The rack 2371 is integrally connected with the extrusion head 234, and the gear 2372 is arranged on the rack. Below the 2371, the gear 2372 is matched with the rack 2371, the belt drive pair 2374 is connected to the drive unit 42, and the gear 2372 rotates through the reversal of the bevel gear pair 2374.

Further, the water collecting unit 23 also includes:

The water collecting plate 238, the water collecting plate 238 is rotatably installed on the corrugated plate 21, the water collecting plate 238 is arranged in an arc, and the water collecting plate 238 and the corrugated plate 21 are installed against the angle position of the driver. a spring plate for elastic return of the water collecting plate 238; and

The plug 239, the plug 239 is installed on the extrusion head 234, the plug 239 moves synchronously with the extrusion head 234, and the plug 239 is inserted into the angle between the water collecting plate 238 and the corrugated plate 21 Inside, the water collecting plate 238 is driven to open.

It should be noted that, when the mixture of water vapor and droplets enters the channel formed by the corrugated plate 21, the water vapor and droplets flow upward along the sidewall of the corrugated plate 21. During this process, the droplets and the water collecting plate 24 collides, is retained by the water collecting plate 24, and is continuously concentrated at the water collecting pipe 231. After being collected by the sponge column 233, the liquid adsorbed in the sponge column 233 is released at one time by squeezing the sponge column 233, so that the liquid is concentrated downward. When the liquid is squeezed and concentrated to flow downward, the water collecting plate 238 will be opened to block the sponge column 233 to avoid the interference of the airflow to the water flow.

As a preferred embodiment, the flow guiding unit 41 includes:

The guide pipe 411, the guide pipe 411 is hollow, the guide pipe 411 is installed on the condenser shell 1, and the guide pipe 411 is connected with the water collecting unit 23 through a hose , and an air inlet 412 is opened on the side wall of the guide tube 411;

A cover plate 413, the cover plate 413 is arranged in an arc shape, and the cover plate 413 is rotatably mounted on the air inlet 412;

The rotary sealing joint 414 is symmetrically installed on both sides of the guide pipe 411 in the axial direction, and the rotating sealing joint 414 is arranged between the guide pipe 411 and the hose.

Further, the drive unit 42 includes:

A driven gear 421, the driven gear 421 is sleeved on any corresponding guide tube 411;

a driving motor 422, the driving motor 422 is mounted on the condenser housing 1, and the driving motor 422 is provided with a driving gear 423 corresponding to the driven gear 421; and

The belt drive group 424 is connected to the adjacent guide pipes 411 by driving, and drives the guide pipes 411 to rotate synchronously.

It should be noted that, through the rotation of the guide pipe 411, the air inlet 412 on the guide pipe 411 is opened when it is located under the guide pipe 411, and the water vapor moves upward, enters the guide pipe 411, and passes through the guide pipe 411. The tube 411 is transferred to the sponge column 233 to be adsorbed, and the liquid entering the guide tube 411 still moves downwards and acts on the cooling work.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. A high-efficiency water-saving countercurrent water circulation heat exchange type condensation method is characterized by comprising the following steps:

firstly, precooling, namely inputting a process fluid into a precooling pipe (31) in a precooling system (3) positioned at the top of a condenser shell (1), radiating heat outwards by radiating fins (32) on the precooling pipe (31), and precooling the process fluid in the precooling pipe (31);

secondly, condensing, namely transferring and conveying the precooled process fluid into a heat exchange tube (14) through a liquid inlet tube (12), spraying cooling water to the heat exchange tube (14) through a nozzle (151) by a water distribution tube (15) positioned above the liquid inlet tube (12), carrying out heat exchange condensation on the process fluid in the heat exchange tube (14), and outputting the condensed process fluid from a liquid outlet tube (13);

step three, recovering water vapor, wherein in the step two, the water vapor formed by heat exchange and condensation of the process fluid in the heat exchange tube (14) by cooling water is collected by a rotating guide tube (411) in a guide unit (41);

fourthly, the air flows, and an exhaust fan (16) starts to suck air from an air inlet grille (17) at the lower part of the condenser shell (1) and exhausts the air from an exhaust port at the top of the condenser shell (1);

fifth, recovering stagnant liquid, wherein in the fourth step, in the flowing process of gas, water vapor and liquid drops are taken away from the heat exchange tube (14), when the gas passes through the water collector (2), the water vapor and the liquid drops are conveyed upwards along a corrugated plate (21) in the water collector (2), the liquid drops are retained by a water collecting plate (24) arranged in an arc shape, the retained liquid drops flow downwards to a water collecting tube (231) of a water collecting unit (23) and are absorbed by a sponge column (233) in the water collecting tube (231), and the water vapor collected by a flow guide unit (41) in the third step is synchronously guided to the sponge column (233); and

and sixthly, extruding and recycling, wherein the extruding heads (234) at two sides of the water absorbing pipe (231) are driven by a driving unit (42) for driving a flow guide unit (41) to extrude the sponge columns (233) in the water absorbing pipe (231), so that cooling water adsorbed in the sponge columns (233) is extruded out and flows reversely downwards along the corrugated plate (21).

2. The high-efficiency water-saving countercurrent water-circulation heat-exchange type condensation method according to claim 1, wherein in the first step, the heat-dissipating fins (32) are rotatably sleeved on the pre-cooling pipe (31), and the heat-dissipating fins (32) are driven to rotate by the air flow generated by the exhaust fan (16).

3. The high-efficiency water-saving countercurrent water-circulating heat-exchange type condensation method according to claim 1, wherein in the second step, a heat exchanger (11) is arranged at the heat exchange tube (14), the heat exchanger (11) comprises a plurality of heat exchange plates which are vertically distributed in parallel, a cooling gap is arranged between the heat exchange plates, a plurality of parallel fluid channels are arranged in the heat exchange plates, all the fluid channels are sequentially connected to form a square-wave channel, the liquid inlet tube (12) is positioned at an inlet of the square-wave channel on each heat exchange plate, the liquid outlet tube (13) is positioned at an outlet of the square-wave channel on each heat exchange plate, a heat exchange filler plate is arranged in the cooling gap, the heat exchange filler plate is formed by overlapping two trapezoidal corrugated filler plates, and a plurality of support columns are arranged on the top surface of the trapezoidal corrugated filler plate.

4. The high-efficiency water-saving countercurrent water circulation heat exchange type condensation method according to claim 1, wherein in the second step, the heat exchange tubes (14) are arranged in a serpentine shape, and the heat exchange tubes (14) are arranged in a staggered manner along the axial direction of the liquid inlet tube (12).

5. The high-efficiency water-saving countercurrent water-circulation heat-exchange type condensation method according to claim 1, wherein in the second step, the cooling water after condensation falls into a water collection tank (18) at the bottom of the condenser shell (1) and is pumped to the water distribution pipe (15) by a circulation reflux system (19) installed on the condenser shell (1) for recycling.

6. An efficient water-saving countercurrent water-circulating heat-exchange type condensation method according to claim 1, characterized in that in step three, the diversion unit (41) comprises:

the guide pipe (411) is arranged in a hollow mode, the guide pipe (411) is rotatably installed on the condenser shell (1), the guide pipe (411) is communicated with the water receiving unit (23) through a hose, and an air inlet (412) is formed in the side wall of the guide pipe (411);

the cover plate (413), the cover plate (413) is arranged in an arc shape, and the cover plate (413) is rotatably arranged on the air inlet (412);

the rotary sealing joints (414) are symmetrically arranged on two axial sides of the guide pipe (411), and the rotary sealing joints (414) are arranged between the guide pipe (411) and the hose.

7. The high-efficiency water-saving countercurrent water-circulating heat-exchange type condensation method according to claim 6, wherein in the third step, the diversion unit (41) is driven by a driving unit (42) to operate, and the driving unit (42) comprises:

the driven gear (421) is sleeved on any corresponding guide pipe (411);

the driving motor (422), the said driving motor (422) is mounted on the said condenser shell (1), there are driving gears (423) cooperating with said driven gear (421) on the driving motor (422); and

belt drive group (424), belt drive group (424) transmission is organized (424) the transmission and is connected adjacently honeycomb duct (411), drive honeycomb duct (411) synchronous revolution.

8. The high-efficiency water-saving countercurrent water circulation heat exchange type condensation method according to claim 1, characterized in that in the fourth step, heat exchange filler bodies (171) are arranged at the air inlet grille (17), and the heat exchange filler bodies (171) are arranged in a honeycomb shape.

9. An efficient water-saving countercurrent water-circulating heat-exchange type condensation method according to claim 1, characterized in that in the fifth step, the water-receiving unit (23) comprises:

the water collecting pipe (231) is integrally connected with the corrugated plate (21) along the length direction of the corrugated plate (21), the water collecting pipe (231) is arranged in a circular pipe shape, and a plurality of through holes (232) are arranged on the side wall of the water collecting pipe (231) which is not connected with the corrugated plate (21) in a penetrating manner;

the sponge column (233) is inserted into the water collecting pipe (231), and the sponge column (233) absorbs water vapor through the through hole (232);

the squeezing heads (234) are symmetrically arranged at two axial sides of the water collecting pipe (231), the squeezing heads (234) push and squeeze the sponge column (233) towards the water collecting pipe (231), and the squeezing heads (234) are arranged in a hollow mode and communicated with the flow guide unit (41) through hoses;

the fixing seat (235) is arranged corresponding to the extrusion head (234), and is positioned on one side, away from the water collecting pipe (231), of the extrusion head (234), and the extrusion head (234) is slidably mounted on the fixing seat (235);

the return spring (236) is arranged between the extrusion head (234) and the fixed seat (235) in an abutting mode; and

the transmission connection group (237), the transmission connection group (237) is connected with the driving unit (42) in a transmission way, and the driving unit (42) drives the extrusion head (234) to slide along the fixed seat (235).

10. An efficient water-saving counter-current water circulating heat-exchange type condensation method according to claim 9, wherein said water-receiving unit (23) further comprises:

the water collecting plate (238) is rotatably arranged on the corrugated plate (21), the water collecting plate (238) is arranged in an arc shape, and a spring plate for driving the water collecting plate (238) to elastically reset is arranged at an included angle position between the water collecting plate (238) and the corrugated plate (21) in an abutting mode; and

the plug (239) is mounted on the extrusion head (234), the plug (239) moves synchronously with the extrusion head (234), and the plug (239) is inserted into an included angle between the water collecting plate (238) and the corrugated plate (21) to drive the water collecting plate (238) to be opened.

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