CN215725265U - Closed circulating water supply device - Google Patents

Abstract

The utility model relates to a closed circulating water supply device, which comprises a cooling tower, wherein the cooling tower comprises a cooling tower body, a coil cooling device is arranged in the cooling tower body, the coil cooling device comprises a cooling water pipe, a spray head arranged at the bottom of the cooling water pipe and a cooling coil arranged below the spray head, an air inlet window is arranged on the cooling tower body below the coil cooling device, an inner cavity of the cooling tower body below the air inlet window is communicated with the cooling water pipe through a circulating water pipe, a first booster pump is arranged on the circulating water pipe, a circulating water return pipe is arranged on the water inlet end of the cooling coil, a filtering device, a first conveying pipe, a booster device and a circulating water supply pipe are sequentially communicated on the water outlet end of the cooling coil, and the evaporation capacity of circulating water in a cooling stage is reduced. The utility model has convenient adjustment and use and wide market prospect.

Description

Closed circulating water supply device

Technical Field

The utility model relates to the field of circulating water supply, in particular to a closed circulating water supply device.

Background

The existing circulating water systems of chemical enterprises all adopt open structures, namely traditional open cooling towers, on one hand, the fresh water consumption is large (mainly expressed as evaporation loss, air blowing loss of air cooling towers and side-filtration backwashing water consumption), and the water consumption of general circulating water systems accounts for 2/3 or even more of the industrial water consumption; on the other hand, cooling water of the open cooling tower is in direct contact with the atmosphere, a large amount of impurities in the atmosphere enter a system to cause corrosion and scaling of a pipeline, and a large amount of chemical agents such as scale inhibitors, corrosion inhibitors, bactericides and the like are forced to be added, so that the method is not economical and produces secondary pollution. The circulating water supply system adopting an open structure has huge evaporation loss and serious water resource waste in the cooling stage, so that the popularization potential is lacked.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a closed circulating water supply device which can reduce the evaporation capacity of circulating water in the cooling stage of the circulating water, and is used for overcoming the defects in the prior art.

The technical scheme adopted by the utility model is as follows: a closed circulating water supply device comprises a cooling tower, wherein the cooling tower comprises a cooling tower body, a coil pipe cooling device is arranged in the cooling tower body, the coil cooling device comprises a cooling water pipe, a spray head arranged at the bottom of the cooling water pipe and a cooling coil arranged below the spray head, an air inlet window is arranged on the cooling tower body below the coil cooling device, the inner cavity of the cooling tower body below the air inlet window is communicated with a cooling water pipe through a circulating water pipe, a first booster pump is arranged on the circulating water pipe, a circulating water return pipe is arranged on the water inlet end of the cooling coil, a filtering device, a first conveying pipe, a boosting device and a circulating water supply pipe are sequentially communicated on the water outlet end of the cooling coil, the filter device comprises a filtering water pipe and a filter arranged on the filtering water pipe, and the supercharging device comprises a supercharging water pipe and a second supercharging pump arranged on the supercharging water pipe.

Preferably, the filter device further comprises a first stop valve arranged on the filtering pipe at one side of the filter close to the cooling coil and a second stop valve arranged on the filtering pipe at one side of the filter far away from the cooling coil, the number of the filter devices is two, and the two filter devices are connected in parallel.

Preferably, the supercharging device further comprises a third stop valve arranged on the supercharging water pipe on one side, close to the filtering device, of the second booster pump and a first regulating valve arranged on the supercharging water pipe on one side, far away from the filtering device, of the second booster pump, the number of the supercharging devices is two, the two supercharging devices are connected in parallel, and a first pressure sensor is arranged on a circulating water supply pipe.

Preferably, the water outlet end of the cooling coil pipe is provided with a water inlet end of a second conveying pipe, the water outlet end of the second conveying pipe is communicated with the top of a first buffer tank, the top of the first buffer tank is also provided with a temperature adjusting water pipe and a first scavenging valve, the second conveying pipe is provided with a first temperature sensor, the bottom of the inner cavity of the first buffer tank is provided with a second temperature sensor, the bottom of the inner cavity of the first buffer tank is communicated with the filtering device through a third conveying pipe, and the third conveying pipe is provided with a third booster pump.

Preferably, the number of the coil cooling devices is two, the two coil cooling devices are all installed in a cooling tower body above the air inlet window, each coil cooling device comprises a cooling coil, and the two cooling coils are communicated through a connecting water pipe.

Preferably, a fourth stop valve is arranged on a circulating water pipe between the first booster pump and the bottom of the cooling tower body, a water replenishing pipe is arranged on the circulating water pipe between the fourth stop valve and the first booster pump, and a fifth stop valve is arranged on the water replenishing pipe.

Preferably, the filtering water pipes and the circulating water return pipe between the two filters and the second stop valve are communicated with each other through a first backwashing water pipe, the first backwashing water pipe is provided with a second regulating valve, the filtering water pipes between the two filters and the first stop valve are provided with a second backwashing water pipe, and the second backwashing water pipe is provided with a sixth stop valve.

Preferably, cooling coil's the end of intaking and circulating water wet return between be provided with the second buffer tank, the top of circulating water wet return and second buffer tank is linked together, the quantity of second backwash water pipe adopts two, all be linked together through the third backwash water pipe between the top of two second backwash water pipes and second buffer tank, be provided with the seventh stop valve on the third backwash water pipe, be provided with the blow off pipe on the third backwash water pipe between seventh stop valve and the second backwash water pipe, be provided with the blowdown stop valve on the blow off pipe, still be provided with the second scavenging valve on the top of second buffer tank, be linked together through the fourth conveyer pipe between the bottom of second buffer tank and cooling coil's the end of intaking, be provided with the fourth booster pump on the fourth conveyer pipe.

Preferably, a third temperature sensor is arranged in the circulating water return pipe on one side, far away from the second buffer tank, of the first backwashing water pipe.

The utility model has the beneficial effects that: firstly, the utility model reduces the evaporation capacity of circulating water in the cooling stage of the circulating water, and reduces the technical phenomenon that a large amount of chemical agents such as scale inhibitors, corrosion inhibitors, bactericides and the like are required to be added to maintain the circulating water to be clear due to the fact that an open circulating water system is usually adopted in a chemical circulating water system and the circulating water is in contact with the air for a long time, so that the addition amount of the chemical agents is reduced, and the water quality index of the circulating water is improved.

And secondly, the number of the filtering devices is two, the two filtering devices are connected in parallel, and the two sets of filtering devices are arranged to facilitate continuous filtering of circulating water discharged by the cooling coil.

And the number of the supercharging devices is two, the two supercharging devices are connected in parallel, and the two supercharging devices are arranged to facilitate continuous supercharging of the circulating water filtered by the filtering device, so that the technical problem that the circulating water cannot be supplied because one set of supercharging equipment needs to be maintained is solved, and the continuous use effect of the product is improved.

The utility model has the advantages of simple structure, convenient operation, ingenious design, great improvement on the working efficiency, good social and economic benefits and easy popularization and use.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged schematic view of detail a of fig. 1.

Fig. 3 is a partially enlarged schematic view of detail B of fig. 1.

Detailed Description

As shown in fig. 1, 2 and 3, a closed circulating water supply device includes a cooling tower, the cooling tower includes a cooling tower body 1, a coil cooling device is disposed in the cooling tower body 1, the coil cooling device includes a cooling water pipe 2, a nozzle 3 disposed at the bottom of the cooling water pipe 2, and a cooling coil 4 disposed below the nozzle 3, a portion of the cooling coil 4 is spiral, and a diameter of the spiral portion gradually increases from the bottom of the spiral portion to the top of the spiral portion; a cooling fan is arranged in the cooling tower body 1 above the coil cooling device, a cooling fan driving motor (not shown) is connected on the cooling fan in a transmission way, an air inlet window 5 is arranged on the cooling tower body 1 below the coil cooling device, a packing layer 6 is arranged in the cooling tower body 1 between the coil cooling device and the air inlet window 5, the inner cavity of the cooling tower body 1 below the air inlet window 5 is communicated with a cooling water pipe 2 through a circulating water pipe 7, a first booster pump 8 is arranged on the circulating water pipe 7, a circulating water return pipe 9 is arranged on the water inlet end of the cooling coil 4, a filtering device, a first conveying pipe 10, a supercharging device and a circulating water supply pipe 11 are sequentially communicated on the water outlet end of the cooling coil 4, the filtering device comprises a filtered water pipe 12 and a filter 13 arranged on the filtered water pipe 12, the supercharging device comprises a supercharging water pipe 14 and a second supercharging pump 15 arranged on the supercharging water pipe 14.

The filter device further comprises a first stop valve 16 arranged on the filtering pipe 12 on one side, close to the cooling coil 4, of the filter 13 and a second stop valve 17 arranged on the filtering pipe 12 on one side, far away from the cooling coil 4, of the filter 13, the number of the filter devices is two, the two filter devices are connected in parallel, and two sets of the filter devices are arranged to facilitate continuous filtering of circulating water discharged from the cooling coil 4. In the normal use process of the product, one set of the two sets of the filtering devices is in a working state, the other set of the filtering devices is in a standby state, the filter 13 in the standby state needs to back flush impurities adsorbed on the filter 13, the filtering water pipe 12 and the circulating water return pipe 9 between the two filters 13 and the second stop valve 17 of the product are respectively communicated through a first back flushing water pipe 33, the first back flushing water pipe 33 is provided with a second regulating valve 34, the filtering water pipe 12 between the two filters 13 and the first stop valve 16 is respectively provided with a second back flushing water pipe 35, the second back flushing water pipe 35 is provided with a sixth stop valve 36, and through opening the first back flushing water pipe 33 communicated with the filtering devices in the standby state, the uncooled circulating water with pressure flowing back through the circulating water return pipe 9 reversely enters the filter 13 in the standby state, the filter 13 in a standby state is backflushed, and impurities are discharged through the second backflush pipe 35, during which fine adjustment of the pressure is performed by adjusting the opening of the second regulating valve 34.

In winter in north, the ambient temperature is too low, the filter device in the standby state can be frozen for a long time when not used, so that the switching of the use state can not be realized in a short time, the frozen part needs to be removed, and the switching can be realized, in order to solve the technical problems, the product is characterized in that a second buffer tank 37 is arranged between the water inlet end of the cooling coil 4 and the circulating water return pipe 9, the circulating water return pipe 9 is communicated with the top of the second buffer tank 37, the number of the second backwashing water pipes 35 is two, the tops of the two second backwashing water pipes 35 and the second buffer tank 37 are communicated through a third backwashing water pipe 38, the third backwashing water pipe 38 is provided with a seventh stop valve 39, the third backwashing water pipe 38 between the seventh stop valve 39 and the second backwashing water pipe 35 is provided with a sewage discharge pipe 40, and the sewage discharge stop valve 41 is arranged on the sewage discharge pipe 40, a second scavenging valve 42 is further arranged on the top of the second buffer tank 37, the bottom of the second buffer tank 37 is communicated with the water inlet end of the cooling coil 4 through a fourth conveying pipe 43, a fourth booster pump 44 is arranged on the fourth conveying pipe 43, circulating water which flows back from the system and is not cooled under pressure is partially backflushed to the filter 13 through the first backflushing water pipe 33, backflushed sewage is discharged into the trench through the second backflushing water pipe 35 and the sewage discharge pipe 40 which are communicated in sequence, a worker needs to visually monitor water discharged from the sewage discharge pipe 40 in real time by combining a turbidity meter, when the backflushing water turbidity reaches a preset standard, the blowdown stop valve 41 is closed and the seventh stop valve 39 is correspondingly opened, and at the moment, the backflushing water flows back into the second buffer tank 37 through the third backflushing water pipe 38; the other part of the pressurized uncooled water returned by the system directly enters the second buffer tank 37 to be mixed with the backwash water, and then is conveyed to the cooling coil 4 for cooling through the fourth booster pump 44.

The booster device further includes a third stop valve 18 provided on the booster water pipe 14 on the side of the second booster pump 15 closer to the filter device and a first regulating valve 19 provided on the booster water pipe 14 on the side of the second booster pump 15 farther from the filter device, the number of the supercharging devices is two, the two supercharging devices are connected in parallel, two sets of the supercharging devices are arranged to facilitate continuous supercharging of the circulating water filtered by the filtering device, the first regulating valve 19 is arranged to ensure that the supercharging power is insufficient when the second supercharging pump 15 is just opened, the circulating water pressure entering the circulating water supply pipe 11 is realized by adjusting the opening degree of the first adjusting valve 19, a first pressure sensor 20 is arranged on the circulating water supply pipe 11, and the pressure of the circulating water entering the circulating water supply pipe 11 is fed back through the first pressure sensor 20.

When the environmental temperature in summer is too high, particularly in southern areas, the circulating water cooled by the cooling coil 4 still does not drop to the preset temperature, the product is characterized in that the water outlet end of the cooling coil 4 is communicated with the water inlet end of the second delivery pipe 21, the water outlet end of the second delivery pipe 21 is communicated with the top of the first buffer tank 22, the top of the first buffer tank 22 is also provided with a temperature-adjusting water pipe 23 and a first scavenging valve 24, the temperature-adjusting water pipe 23 is provided with a third adjusting valve 47, the second delivery pipe 21 is provided with a first temperature sensor 25, the bottom of the inner cavity of the first buffer tank 22 is provided with a second temperature sensor 26, when the product is used, the temperature of the circulating water discharged from the cooling coil 4 is fed back through the first temperature sensor 25, the temperature-adjusting water pipe 23 is opened correspondingly according to the temperature fed back by the first temperature sensor 25 to continuously deliver low-temperature water to the first buffer tank 22 so as to reduce the temperature of the circulating water in the first buffer tank 22, and the temperature fed back by the second temperature sensor 26 is correspondingly adjusted The opening degree of the third regulating valve 47 is adjusted; the inner chamber bottom of first buffer tank 22 with filter equipment be linked together through third conveyer pipe 27, be provided with third booster pump 28 on the third conveyer pipe 27, the circulating water of having adjusted the temperature is carried for after the pressurization of third booster pump 28 filter equipment filter.

In order to increase the cooling effect of circulating water in the cooling tower, this product coil pipe cooling device's quantity adopt two, two coil pipe cooling device all install in the cooling tower body 1 of air inlet window 5 top, every coil pipe cooling device in all include a cooling coil 4, be linked together through connecting water pipe 29 between two cooling coil 4.

At the in-process of the circulating water that cooling coil 4 flows, the cooling water in the cooling tower body 1 can the partial evaporation, this product is through circulating water pipe 7 between first booster pump 8 and the 1 bottom of cooling tower body on be provided with fourth stop valve 30, be provided with moisturizing pipe 31 between fourth stop valve 30 and the first booster pump 8 on circulating water pipe 7, be provided with fifth stop valve 32 on the moisturizing pipe 31, be provided with level gauge 46 on the cooling tower body 1 of inlet window 5 below, liquid level height in the cooling tower body 1 through the last level gauge 46 feedback of cooling tower body 1, the corresponding water yield of opening fifth stop valve 32 moisturizing and then increasing the cooling water that circulates in the cooling tower body 1 through moisturizing pipe 31 in to circulating water pipe 7.

In order to conveniently know the return water temperature of the circulating water of the system, a third temperature sensor 45 is arranged in the circulating water return pipe 9 on the side, away from the second buffer tank 37, of the first backwashing water pipe 33.

The use method of the product is as follows: as shown in fig. 1, 2 and 3, circulating water under pressure flowing back from the system enters a cooling coil 4 through a circulating water return pipe 9, meanwhile, cooling water at the bottom of a cooling tower body 1 enters a cooling water pipe 2 through a circulating water pipe 7 and pressurization of a first booster pump 8, and is sprayed onto the outer wall of the spiral cooling coil 4 through a spray head 3 arranged on the cooling water pipe 2 to exchange heat with the cooling coil 4 so as to cool the circulating water in the cooling coil 4, then enters a packing layer 6 and exchanges heat with a gas inlet window 5, the gas carrying heat is discharged from the top opening end of the cooling tower body 1, and the cooling fan is opened during the process to accelerate the gas carrying heat to be discharged from the cooling tower body 1, and the gas returns to the bottom of the cooling tower body 1 for recycling after being cooled; the cooled circulating water is subjected to temperature feedback through a first temperature sensor 25, a temperature-adjusting water pipe 23 is selectively opened according to the temperature fed back by the first temperature sensor 25 to convey cooling water to a first buffer tank 22, secondary temperature feedback is carried out through a second temperature sensor 26 in the first buffer tank 22, and the opening degree of a third adjusting valve 47 is adjusted to the preset cooling temperature of the circulating water according to the temperature fed back by the second temperature sensor 26; then, the water enters the filter 13 in the use state through the third booster pump 28 on the third delivery pipe 27 to filter particulate matters, then enters the booster water pipe 14 in the use state through the first delivery pipe 10, is delivered to the circulating water supply pipe 11 through the second booster pump 15, and is delivered to the cooling equipment through the circulating water supply pipe 11.

Through the embodiment, the evaporation capacity of circulating water in the cooling stage of the circulating water is reduced, the technical phenomenon that a large amount of chemical agents such as scale inhibitors, corrosion inhibitors and bactericides are required to be added to maintain the circulating water to be clear due to the fact that an open circulating water system is usually adopted in a chemical circulating water system and the circulating water is in contact with the air for a long time is reduced, and the addition amount of the chemical agents is reduced, so that the water quality index of the circulating water is improved.

The closed circulating water supply device meets the requirements of workers in the field of circulating water supply, and has wide market prospect.

Claims (9)

1. The utility model provides a closed circulating water supply device, includes the cooling tower, its characterized in that: the cooling tower include cooling tower body (1), be provided with coil pipe cooling device in cooling tower body (1), coil pipe cooling device including cooling water pipe (2), shower nozzle (3) that cooling water pipe (2) bottom set up and cooling coil (4) that shower nozzle (3) below set up, cooling tower body (1) of coil pipe cooling device below on be provided with air intake window (5), cooling tower body (1) inner chamber and cooling water pipe (2) of air intake window (5) below are linked together through circulating water pipe (7), be provided with first booster pump (8) on circulating water pipe (7), be provided with circulating water return pipe (9) on the water inlet of cooling coil (4), the play water end of cooling coil (4) is gone up and is linked together in proper order has filter equipment, first conveyer pipe (10), supercharging device and circulating water (11), filter equipment include filter (13) that water strainer (12) and set up on filtering water pipe (12) The supercharging device comprises a supercharging water pipe (14) and a second supercharging pump (15) arranged on the supercharging water pipe (14).

2. The closed circulating water supply device according to claim 1, wherein: the filter device further comprises a first stop valve (16) arranged on the filtering pipe (12) on one side, close to the cooling coil (4), of the filter (13) and a second stop valve (17) arranged on the filtering pipe (12) on one side, far away from the cooling coil (4), of the filter (13), the number of the filter devices is two, and the two filter devices are connected in parallel.

3. The closed circulating water supply device according to claim 1, wherein: the supercharging device also comprises a third stop valve (18) arranged on the supercharging water pipe (14) at one side, close to the filtering device, of the second booster pump (15) and a first regulating valve (19) arranged on the supercharging water pipe (14) at one side, far away from the filtering device, of the second booster pump (15), the number of the supercharging devices is two, the supercharging devices are connected in parallel, and a first pressure sensor (20) is arranged on a circulating water supply pipe (11).

4. The closed circulating water supply device according to claim 1, wherein: the water outlet end of the cooling coil pipe (4) is provided with a water inlet end of a second conveying pipe (21), the water outlet end of the second conveying pipe (21) is communicated with the top of a first buffer tank (22), the top of the first buffer tank (22) is further provided with a temperature adjusting water pipe (23) and a first scavenging valve (24), the second conveying pipe (21) is provided with a first temperature sensor (25), the bottom of an inner cavity of the first buffer tank (22) is provided with a second temperature sensor (26), the bottom of the inner cavity of the first buffer tank (22) is communicated with a filtering device through a third conveying pipe (27), and the third conveying pipe (27) is provided with a third booster pump (28).

5. The closed circulating water supply device according to claim 1, wherein: coil pipe cooling device's quantity adopt two, two coil pipe cooling device all install in cooling tower body (1) of window (5) top of admitting air, every coil pipe cooling device in all include a cooling coil (4), be linked together through connecting water pipe (29) between two cooling coil (4).

6. The closed circulating water supply device according to claim 1, wherein: the cooling tower is characterized in that a fourth stop valve (30) is arranged on a circulating water pipe (7) between the first booster pump (8) and the bottom of the cooling tower body (1), a water replenishing pipe (31) is arranged on the circulating water pipe (7) between the fourth stop valve (30) and the first booster pump (8), and a fifth stop valve (32) is arranged on the water replenishing pipe (31).

7. The closed circulating water supply device according to claim 2, wherein: the water filter is characterized in that a filtering water pipe (12) and a circulating water return pipe (9) between the two filters (13) and the second stop valve (17) are communicated through a first backwashing water pipe (33), a second regulating valve (34) is arranged on the first backwashing water pipe (33), a second backwashing water pipe (35) is arranged on the filtering water pipe (12) between the two filters (13) and the first stop valve (16), and a sixth stop valve (36) is arranged on the second backwashing water pipe (35).

8. The closed circulating water supply device according to claim 7, wherein: a second buffer tank (37) is arranged between the water inlet end of the cooling coil (4) and the circulating water return pipe (9), the circulating water return pipe (9) is communicated with the top of the second buffer tank (37), the number of the second backwashing water pipes (35) is two, the tops of the two second backwashing water pipes (35) and the second buffer tank (37) are communicated through a third backwashing water pipe (38), a seventh stop valve (39) is arranged on the third backwashing water pipe (38), a sewage discharge pipe (40) is arranged on the third backwashing water pipe (38) between the seventh stop valve (39) and the second backwashing water pipe (35), a sewage discharge stop valve (41) is arranged on the sewage discharge pipe (40), a second scavenging valve (42) is also arranged on the top of the second buffer tank (37), the bottom of the second buffer tank (37) is communicated with the water inlet end of the cooling coil (4) through a fourth conveying pipe (43), a fourth booster pump (44) is arranged on the fourth conveying pipe (43).

9. The closed circulating water supply device according to claim 7, wherein: and a third temperature sensor (45) is arranged in the circulating water return pipe (9) at one side of the first backwashing water pipe (33) far away from the second buffer tank (37).

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