Closed water cooling device and closed water system

Abstract

The utility model discloses a closed water cooling device and a closed water system, and relates to the technical field of desulfurization. The closed water cooling device comprises a sleeve, a closed water pipe and a coil pipe, the sleeve is provided with a cooling water inlet and a cooling water outlet, the closed water pipe and the coil pipe are partially located in the sleeve, the coil pipe is partially wound outside the closed water pipe, the two ends of the coil pipe extend out of the sleeve, and the two ends of the coil pipe are provided with a coolant inlet and a coolant outlet respectively. The two ends of the closed water pipe extend out of the sleeve, and a closed water inlet and a closed water outlet are formed in the two ends of the closed water pipe respectively. Thus, cooling water can be introduced into the sleeve to cool the closed water, and in the extreme high temperature period, cold sources such as liquid nitrogen and carbon dioxide can be introduced into the coil pipe to cool the closed water. And the equipment in the desulfurization area can be better cooled, so that the equipment can normally operate.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization, and particularly relates to a closed water cooling device and a closed water system. Background Art

[0002] Closed water generally refers to the cooling water in a closed water circulation system, which is used in industrial production, power generation or other occasions that require a stable supply of heat energy or cooling. In such a system, water is recycled and does not contact the atmosphere, so water evaporation and pollution can be reduced, and water quality and pressure can be kept stable.

[0003] Since the desulfurization area is at the end of the closed water users in the whole plant, the pressure, flow rate and temperature of the closed water in the desulfurization area are small, and the cooling effects of the main equipment slurry circulation pumps and oxidation blowers in the desulfurization area are poor. Especially in hot summer days, the temperature of the closed water is high and cannot meet the cooling requirements of the desulfurization equipment. Therefore, overheating phenomena often occur in equipment such as the reducer of the slurry circulation pump and the oxidation blower in the desulfurization system, affecting the normal operation of the equipment and thus the entire desulfurization process. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a closed water cooling device and a closed water system, aiming to reduce the temperature of the closed water in the desulfurization area.

[0005] To achieve the above purpose, the closed water cooling device proposed by the utility model includes a sleeve, a closed water pipe and a coil pipe. The sleeve has a cooling water inlet and a cooling water outlet. The closed water pipe and the coil pipe are partially located inside the sleeve. The coil pipe is partially wound around the outer peripheral wall of the closed water pipe. The two ends of the coil pipe extend outside the sleeve, and a coolant inlet and a coolant outlet are respectively formed at the two ends of the coil pipe. The coolant inlet is arranged close to the cooling water outlet, and the coolant outlet is arranged close to the cooling water inlet. The two ends of the closed water pipe extend outside the sleeve, and a closed water inlet and a closed water outlet are respectively formed at the two ends of the closed water pipe. The closed water inlet is arranged close to the cooling water inlet, and the closed water outlet is arranged close to the cooling water outlet.

[0006] In an embodiment, an open mouth is provided at the top of the sleeve. The two ends of the closed water pipe pass through the open mouth and extend outside the sleeve. The two ends of the coil pipe pass through the open mouth and extend outside the sleeve.

[0007] In one embodiment, the casing further has a first baffle and a second baffle. The first baffle and the second baffle respectively enclose two ends of the casing. The first baffle is provided with the cooling water inlet and the closed water pipe inlet, and the second baffle is provided with the cooling water outlet and the closed water pipe outlet. The casing is further provided with a first opening near the second baffle and a second opening near the first baffle.

[0008] The closed water pipe sequentially passes through the closed water pipe inlet and the closed water pipe outlet, and the coil pipe sequentially passes through the first opening and the second opening.

[0009] In one embodiment, the cooling water inlet is arranged at the bottom of the first baffle, and the cooling water outlet is arranged at the top of the second baffle.

[0010] In one embodiment, the closed water pipe inlet and the closed water pipe outlet are provided with seals.

[0011] And / or, the first opening and the second opening are provided with seals.

[0012] In one embodiment, the diameter of the casing is twice the diameter of the closed water pipe.

[0013] In one embodiment, the cooling water inlet is provided with a regulating valve.

[0014] And / or, a regulating valve is provided on the coil pipe near the coolant inlet.

[0015] In one embodiment, the closed water cooling device further includes a liquid nitrogen bottle or a liquid carbon dioxide bottle. The coolant inlet is communicated with the liquid nitrogen bottle or the liquid carbon dioxide bottle, and the coolant outlet is communicated with the external air.

[0016] The present utility model further provides a closed water system, including a water storage tank, the closed water cooling device as described in any one of the above embodiments, a slurry circulation pump, and an oxidation blower.

[0017] Wherein, the closed water pipe sequentially connects in series the water storage tank, the closed water cooling device, the slurry circulation pump, and the oxidation blower.

[0018] In one embodiment, the closed water system has a mechanical seal water outlet pipeline. The slurry circulation pump has a mechanical seal water outlet. The mechanical seal water outlet pipeline connects the mechanical seal water outlet and the cooling water inlet.

[0019] The technical solution of the present utility model adopts a closed - type water cooling device, including a casing, a closed - type water pipe, and a coiled pipe. The casing has a cooling water inlet and a cooling water outlet. The closed - type water pipe and the coiled pipe are partially located inside the casing. The coiled pipe is partially wound outside the closed - type water pipe. The two ends of the coiled pipe extend outside the casing, and a coolant inlet and a coolant outlet are respectively provided at the two ends of the coiled pipe. The two ends of the closed - type water pipe extend outside the casing, and a closed - type water inlet and a closed - type water outlet are respectively provided at the two ends of the closed - type water pipe. In this way, cooling water can be introduced into the casing to cool the closed - type water, and during extremely high - temperature periods, cold sources such as liquid nitrogen and carbon dioxide can be connected to the coiled pipe to cool the closed - type water. It can better cool the equipment in the desulfurization area and enable it to operate normally. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 It is a schematic structural diagram of an embodiment of the closed - type water cooling device provided by the present utility model;

[0022] Figure 2 is Figure 1 a partial enlarged view of the cross - section at A in

[0023] Figure 3 It is a schematic structural diagram of another embodiment of the closed - type water cooling device provided by the present utility model.

[0024] Explanation of the Reference Numerals in the Drawings:

[0025] 100, closed - type water cooling device; 1, closed - type water pipe; 1a, closed - type water inlet; 1b, closed - type water outlet; 2, casing; 2a, cooling water inlet; 2b, cooling water outlet; 2c, open end; 2d, first opening; 2e, second opening; 21, first baffle; 21a, closed - type water pipe inlet; 22, second baffle; 22a, closed - type water pipe outlet; 3, coiled pipe; 3a, coolant inlet; 3b, coolant outlet.

[0026] The realization of the purpose, functional characteristics, and advantages of the present utility model will be further described with reference to the embodiments and the drawings. Detailed Embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0028] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] The present utility model provides a closed-loop water cooling device 100.

[0031] Please refer to Figure 1 and Figure 3, in an embodiment of the present utility model, for the closed - type water cooling device 100 to achieve the above - mentioned purpose, the closed - type water cooling device 100 proposed by the present utility model includes a sleeve 2, a closed - type water pipe 1, and a coil pipe 3. The sleeve 2 has a cooling water inlet 2a and a cooling water outlet 2b. The closed - type water pipe 1 and the coil pipe 3 are partially located inside the sleeve 2. The coil pipe 3 is partially wound around the outer peripheral wall of the closed - type water pipe 1. The two ends of the coil pipe 3 extend outside the sleeve 2. A coolant inlet 3a and a coolant outlet 3b are respectively formed at the two ends of the coil pipe 3. The coolant inlet 3a is arranged close to the cooling water outlet 2b, and the coolant outlet 3b is arranged close to the cooling water inlet 2a. The two ends of the closed - type water pipe 1 respectively extend outside the sleeve 2. A closed - type water inlet 1a and a closed - type water outlet 1b are respectively formed at the two ends of the closed - type water pipe 1. The closed - type water inlet 1a is arranged close to the cooling water inlet 2a, and the closed - type water outlet 1b is arranged close to the cooling water outlet 2b.

[0032] In this embodiment, the closed - type water is used to cool the equipment in the whole plant area. The desulfurization area is located downstream of the plant area, and the temperature of the closed - type water here is relatively high. The closed - type water cooling device 100 in this embodiment is used to cool the closed - type water in the desulfurization area, and the cooling water is used to cool the closed - type water again. Specifically, a sleeve 2 is arranged outside the closed - type water pipe 1, and cooling water is injected into the sleeve 2 to cool the closed - type water with the cooling water. For the convenience of water intake, the cooling water can be obtained nearby. For example, the seal water of the desulfurization slurry circulation pump can be directly used. The temperature of the seal water of the desulfurization slurry circulation pump is lower than the temperature of the closed - type water throughout the year, and in summer, it can be 10 - 20 degrees lower than the temperature of the closed - type water. The outlet water of the slurry circulation pump seal is used to enter the sleeve 2 to cool the closed - type water again, realizing the re - cooling of the closed - type water in the desulfurization area. The cooling water can also be taken from sources such as lake and river water or tap water with a temperature lower than that of the closed - type water.

[0033] In addition, the coil pipe 3 is partially wound around the outer peripheral wall of the closed - type water pipe 1. When necessary, a coolant is introduced into the coil pipe 3 to ensure the safe operation of the equipment in the desulfurization area. During extremely high - temperature periods, when only using cooling water to cool the closed - type water, the cooling efficiency of the cooling water cannot meet the cooling requirements of the closed - type water. At this time, cold sources such as liquid nitrogen and carbon dioxide can be connected into the coil pipe 3 to cool the closed - type water pipeline. The inlet of the cooling coil pipe 3 is closer to the closed - type water outlet 1b. When the cooling coil pipe 3 is enabled, the cooling effect is the best when the coolant just enters the coil pipe, so that when the closed - type water reaches the desulfurization area equipment that needs to dissipate heat downstream, the temperature is the lowest and the cooling effect is the best.

[0034] Specifically, in this embodiment, the length of the sleeve 2 is 15 meters. The sleeve 2 is arranged outside the closed - type water pipe 1. The closed - type water pipe 1 is longer than the sleeve 2, that is, the sleeve 2 only accommodates a section of the closed - type water pipe 1. And in order to enable the coolant to be introduced into the coil pipe 3 from outside the sleeve 2, the coil pipe 3 passes through the pipe wall of the sleeve 2 and extends outside the sleeve 2.

[0035] The technical solution of this embodiment adopts a closed - type water cooling device 100, including a sleeve 2, a closed - type water pipe 1, and a coiled pipe 3. The sleeve 2 has a cooling water inlet 2a and a cooling water outlet 2b. The closed - type water pipe 1 and the coiled pipe 3 are partially located inside the sleeve 2. The coiled pipe 3 is partially wound outside the closed - type water pipe 1. The two ends of the coiled pipe 3 extend outside the sleeve 2, and a coolant inlet 3a and a coolant outlet 3b are respectively provided at the two ends of the coiled pipe 3. The two ends of the closed - type water pipe 1 extend outside the sleeve 2, and a closed - type water inlet 1a and a closed - type water outlet 1b are respectively provided at the two ends of the closed - type water pipe 1. In this way, cooling water can be introduced into the sleeve 2 to cool the closed - type water. And in extremely high - temperature periods, cold sources such as liquid nitrogen and carbon dioxide can be connected to the coiled pipe 3 to cool the closed - type water. It can better cool the equipment in the desulfurization area and enable it to operate normally.

[0036] Further, please refer to Figure 1 、 Figure 2 , in an embodiment of the present utility model, an open - mouth 2c is provided at the top of the sleeve 2. The two ends of the closed - type water pipe 1 pass through the open - mouth 2c and extend outside the sleeve 2. The two ends of the coiled pipe 3 pass through the open - mouth 2c and extend outside the sleeve 2. For the convenience of installation, an open - mouth 2c that can allow the closed - type water pipe 1 and the coiled pipe 3 to pass through is processed at the top of the sleeve 2. The sleeve 2 is sleeved outside the closed - type water pipe 1 through the open - mouth 2c. Such an operation is simple and convenient, and there is no need to modify the original closed - type water pipe 1 path.

[0037] Considering that the cooling water should fully submerge the closed - type water pipe 1, please refer to Figure 3 , in an embodiment of the present utility model, the sleeve 2 further has a first baffle 21 and a second baffle 22. The first baffle 21 and the second baffle 22 respectively seal the two ends of the sleeve 2. The cooling water inlet 2a and the inlet of the closed - type water pipe 1 are provided on the first baffle 21. The cooling water outlet 2b and the outlet of the closed - type water pipe 1 are provided on the second baffle 22. A first opening 2d is provided on the sleeve 2 near the second baffle 22, and a second opening 2e is provided near the first baffle 21. The closed - type water pipe 1 sequentially passes through the inlet of the closed - type water pipe 1 and the outlet of the closed - type water pipe 1. The coiled pipe 3 sequentially passes through the first opening 2d and the second opening 2e.

[0038] In this embodiment, baffles fixedly connected to the sleeve 2 are provided at both ends of the sleeve 2, and the baffles are sealed with the ends of the sleeve 2, for example, fixed connection and sealing are achieved through threads and sealing rings or sealants. By opening holes in the sleeve 2, the coiled pipe 3 enters and exits the sleeve 2 through the holes, and the coolant inlet 3a and the coolant outlet 3b on the coiled pipe 3 are arranged outside the sleeve 2, facilitating the connection of the coolant from outside the sleeve 2 into the coiled pipe 3. Since the closed water pipe 1 is longer than the sleeve 2, an inlet for the closed water pipe 1 and an outlet for the closed water pipe 1 are sequentially opened on the first baffle 21 and the second baffle 22. The baffle and the sleeve 2 form a sealed cooling water accommodation space, and the cooling water is not easily evaporated and lost. All the cooling water is used to cool the closed water, improving the utilization rate of the cooling water. Moreover, the cooling water can fill the entire closed cooling water accommodation space, improving the cooling effect. The inlet of the cooling coiled pipe 3 is closer to the closed water outlet 1b. When the cooling coiled pipe 3 is enabled, the cooling effect is the best when the coolant just enters the coiled pipe, so that when the closed water passes to the downstream desulfurization area equipment that needs to dissipate heat, the temperature reaches the lowest and the cooling effect is the best.

[0039] Further, please refer to Figure 3 , in an embodiment of the present utility model, the cooling water inlet 2a is arranged at the bottom of the first baffle 21, and the cooling water outlet 2b is arranged at the top of the second baffle 22. The cooling water inlet 2a is at the lowest position, and the cooling water outlet 2b is at the highest position, which can make the cooling water better fill the sleeve 2 and improve the cooling effect; moreover, the density of the cooling water that has absorbed the temperature of the closed water and increased in temperature is reduced, so it is located at the top of the accommodation space and is discharged from the cooling water outlet 2b immediately, further improving the cooling effect.

[0040] Further, please refer to Figure 3 , in an embodiment of the present utility model, seals are provided at the inlet of the closed water pipe 1 and the outlet of the closed water pipe 1; and / or, seals are provided at the first opening 2d and the second opening 2e. The seal can be a sealing ring or sealant. If the above pipelines are made of metal pipelines, welding can also be used here to achieve sealing.

[0041] Specifically, please refer to Figure 2 , in an embodiment of the present utility model, the diameter of the sleeve 2 is twice the diameter of the closed water pipe 1. It should be noted that the diameter of the sleeve 2 being twice the diameter of the closed water pipe 1 is beneficial to making full use of the cooling water to cool the closed water. If the diameter of the sleeve 2 is too large, the cooling water is not fully utilized; if the diameter of the sleeve 2 is too small, the cooling efficiency is low and the cooling effect is poor.

[0042] Further, please refer to Figure 3In one embodiment of the utility model, the cooling water inlet 2a is provided with a regulating valve, and / or, the coil 3 is provided with a regulating valve near the coolant inlet 3a. The regulating valve can be used to adapt to different working conditions. When the closed water can excessively meet the cooling demand of the desulfurization zone equipment, the cooling water flow or coolant flow is reduced to reduce the cost. When the closed water temperature is too high to meet the cooling demand of the desulfurization zone equipment, the cooling water and coolant flow are increased to improve the cooling efficiency.

[0043] Specifically, see Figure 1 In one embodiment of the utility model, the closed water cooling device 100 further includes a liquid nitrogen bottle or a liquid carbon dioxide bottle, the coolant inlet 3a is connected to the liquid nitrogen bottle or the liquid carbon dioxide bottle, and the coolant outlet 3b is connected to the external air. Liquid nitrogen and liquid carbon dioxide are used as coolants, and no harmful substances are generated after use, and they can be directly discharged without the need for waste gas discharge treatment, thereby saving discharge costs.

[0044] The utility model also proposes a closed water system, comprising a water storage tank, a closed water cooling device 100 as described in any of the above embodiments, a slurry circulation pump and an oxidation fan, wherein the closed water pipe 1 is sequentially connected in series with the water storage tank, the closed water cooling device 100, the slurry circulation pump and the oxidation fan. Since the closed water system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0045] Specifically, see Figures 1 to 3 In one embodiment of the utility model, the closed water system has a sealing water outlet pipeline, the slurry circulation pump has a sealing water outlet, and the sealing water outlet pipeline connects the sealing water outlet and the cooling water inlet 2a. The sealing water temperature of the slurry circulation pump in the desulfurization zone is lower than the closed water temperature all year round, and can be 10-20°C lower than the closed water temperature in summer. The sealing water of the slurry circulation pump is passed into the casing 2 from the cooling water inlet 2a, and the closed water is cooled and then flows out from the cooling water outlet 2b on the other side, so as to cool the closed water again, thereby achieving closed water cooling in the desulfurization area, and utilizing the sealing water originally to be discharged as cooling water nearby, thereby improving the economy of the cooling system.

[0046] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A closed water cooling device (100), characterized in that: The closed water cooling device (100) comprises: A casing (2), wherein the casing (2) has a cooling water inlet (2a) and a cooling water outlet (2b); A closed water pipe (1); and Coil (3); The closed water pipe (1) and the coil (3) are partially located inside the casing (2); the coil (3) is partially arranged around the outer peripheral wall of the closed water pipe (1); both ends of the coil (3) extend outside the casing (2); a coolant inlet (3a) and a coolant outlet (3b) are respectively formed at both ends of the coil (3); the coolant inlet (3a) is arranged close to the cooling water outlet (2b); the coolant outlet (3b) is arranged close to the cooling water inlet (2a); both ends of the closed water pipe (1) extend outside the casing (2); a closed water inlet (1a) and a closed water outlet (1b) are respectively formed at both ends of the closed water pipe (1); the closed water inlet (1a) is arranged close to the cooling water inlet (2a); the closed water outlet (1b) is arranged close to the cooling water outlet (2b).

2. The closed water cooling device (100) according to claim 1, characterized in that: The top of the casing (2) is provided with an opening (2c), the two ends of the closed water pipe (1) pass through the opening (2c) and extend to the outside of the casing (2), and the two ends of the coil (3) pass through the opening (2c) and extend to the outside of the casing (2).

3. The closed water cooling device (100) according to claim 1, characterized in that: The sleeve (2) further comprises a first baffle (21) and a second baffle (22), the first baffle (21) and the second baffle (22) respectively closing two ends of the sleeve (2), the first baffle (21) being provided with the cooling water inlet (2a) and the closed water pipe inlet (21a), the second baffle (22) being provided with the cooling water outlet (2b) and the closed water pipe outlet (22a), the sleeve (2) further comprising a first opening (2d) arranged close to the second baffle (22) and a second opening (2e) arranged close to the first baffle (21); The closed water pipe (1) passes through the closed water pipe inlet (21a) and the closed water pipe outlet (22a) in sequence, and the coil (3) passes through the first opening (2d) and the second opening (2e) in sequence.

4. The closed water cooling device (100) according to claim 3, characterized in that: The cooling water inlet (2a) is arranged at the bottom of the first baffle (21), and the cooling water outlet (2b) is arranged at the top of the second baffle (22).

5. The closed water cooling device (100) according to claim 3, characterized in that: The closed water pipe inlet (21a) and the closed water pipe outlet (22a) are provided with sealing members; And / or, the first opening (2d) and the second opening (2e) are provided with sealing members.

6. The closed water cooling device (100) according to claim 1, characterized in that: The diameter of the sleeve (2) is twice the diameter of the closed water pipe (1).

7. The closed water cooling device (100) according to claim 1, characterized in that: The cooling water inlet (2a) is provided with a regulating valve; And / or, a regulating valve is provided on the coil (3) near the coolant inlet (3a).

8. The closed water cooling device (100) according to claim 1, characterized in that: The closed water cooling device (100) further comprises a liquid nitrogen bottle or a liquid carbon dioxide bottle, the coolant inlet (3a) is connected to the liquid nitrogen bottle or the liquid carbon dioxide bottle, and the coolant outlet (3b) is connected to the external air.

9. A closed water system, characterized in that: The closed water system comprises: Water storage tanks; The closed water cooling device (100) according to any one of claims 1 to 8; Slurry circulation pump; Oxidation fan; Wherein, the closed water pipe (1) is sequentially connected in series with the water storage tank, the closed water cooling device (100), the slurry circulation pump and the oxidation fan.

10. The closed water system according to claim 9, characterized in that: The closed water system has a mechanical seal water outlet pipeline, the slurry circulation pump has a mechanical seal water outlet, and the mechanical seal water outlet pipeline is connected with the mechanical seal water outlet and the cooling water inlet (2a).

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