Cooling water circulation system and cooling water softening and filtering assembly thereof

Abstract

The utility model discloses a cooling water softening and filtering assembly which comprises a main pump, a manganese sand tank, a cooling device and an adsorption filtering tank which are communicated along the liquid flow direction of cooling water, a water inlet of the main pump is communicated with the downstream of a cooling water discharge port of water equipment in the cooling water circulation system, and a water discharge port of the adsorption filtering tank is communicated with the upstream of a cooling water supply port of the water equipment. The cooling water softening and filtering assembly can be used for timely and efficiently softening cooling water, so that the hardness of the cooling water is prevented from exceeding the standard, and the whole cooling water circulating system can stably and reliably operate. The utility model further discloses a cooling water circulation system applying the cooling water softening and filtering assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting equipment for a cooling water circulation system, in particular to a cooling water softening and filtering component, and also relates to a cooling water circulation system applying the cooling water softening and filtering component. Background Art

[0002] During the daily operation of equipment such as diesel engines applied in current nuclear power plants, a cooling water circulation system is usually required to provide sufficient cooling water for the equipment such as diesel engines to ensure that the working temperature of these large equipment is within a reasonable range allowed by the working conditions. Correspondingly, the water quality state of the cooling water is also one of the important factors determining the efficient operation and stable operation of related functional equipment in the nuclear power plant.

[0003] In practical applications, due to changes in the working condition environment and other situations, the hardness of the cooling water will exceed the standard, which will cause a large amount of impurities to accumulate inside the supporting cooling water treatment equipment such as a cooling water heater, forming scale. The heating pipes of the heater are wrapped by scale and cannot dissipate heat, and in severe cases, the heating pipes will be burned through. Correspondingly, before the on-line water filtration treatment is carried out, the heater needs to be disassembled and inspected regularly to avoid the heater being burned again, and these regular disassembly inspections have seriously affected the working reliability and operation continuity of emergency generator sets including diesel engines.

[0004] In view of this, how to carry out timely and efficient softening treatment on the cooling water, avoid the hardness of the cooling water from exceeding the standard, and enable the entire cooling water circulation system to operate stably and reliably is an important technical problem that those skilled in the art need to solve at present. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a cooling water softening and filtering component, which can carry out timely and efficient softening treatment on the cooling water, avoid the hardness of the cooling water from exceeding the standard, and enable the entire cooling water circulation system to operate stably and reliably. Another purpose of the utility model is to provide a cooling water circulation system applying the above cooling water softening and filtering component.

[0006] To solve the above technical problems, the utility model provides a cooling water softening and filtering component, including a main pump, a manganese sand tank, a cooling device and an adsorption and filtration tank which are connected in sequence along the liquid flow direction of the cooling water. An adsorption resin is installed in the inner cavity of the adsorption and filtration tank. The water inlet of the main pump is connected downstream of the cooling water discharge port of the water-using equipment in the cooling water circulation system, and the water discharge port of the adsorption and filtration tank is connected upstream of the cooling water supply port of the water-using equipment.

[0007] Preferably, it further includes a liquid supplementing component connected to the adsorption and filtration tank to introduce an adsorption liquid into the inner cavity of the adsorption and filtration tank.

[0008] Preferably, a cooling device is connected between the manganese sand tank and the adsorption and filtration tank.

[0009] Preferably, a temperature measuring device is arranged at the water outlet end of the cooling device, and a flow control valve is also connected between the cooling device and the adsorption and filtration tank.

[0010] Preferably, an impurity filter is connected between the flow control valve and the adsorption and filtration tank.

[0011] Preferably, a gas-liquid separation device is connected downstream of the adsorption and filtration tank. The liquid outlet of the gas-liquid separation device is connected to the cooling water supply port of the water-using equipment. An exhaust port is arranged at the top of the gas-liquid separation device, and the exhaust port is higher than the liquid outlet.

[0012] Preferably, a sampling valve is arranged at the exhaust port.

[0013] Preferably, a one-way valve that only allows liquid to flow from the gas-liquid separation device to the water-using equipment is connected between the liquid outlet and the cooling water supply port of the water-using equipment.

[0014] The present utility model also provides a cooling water circulation system, which includes a cooling water pipeline and a water-using equipment that are connected and cooperate with each other, and further includes a cooling water softening and filtering component that is connected and cooperates with the water-using equipment. The cooling water softening and filtering component is the cooling water softening and filtering component described in any one of the above.

[0015] Preferably, the water-using equipment is a diesel engine or an air cooler.

[0016] Compared with the above background technology, in the process of assembling, operating and using the cooling water softening and filtering component provided by the present utility model, the cooling water discharged from the water-using equipment is pumped by the main pump to the downstream pipeline and flows through each device in sequence. The manganese sand in the manganese sand tank can efficiently remove heavy metals such as iron mixed in the cooling water. The cooling water treated by the manganese sand tank continues to flow into the adsorption and filtration tank, and the adsorption resin in the adsorption and filtration tank is used to further remove the metal substances mixed in the cooling water. Thus, through the synergistic cooperation of the manganese sand tank and the adsorption resin, the hardness of the cooling water is effectively reduced. After the cooling water treated by the cooling water softening and filtering component is re-introduced into the water-using equipment, the generation of scale can be effectively reduced, thereby avoiding the damage of related equipment due to excessive impurities and excessive scale in the cooling water, ensuring the stable and reliable operation of each water-using equipment, and enabling the entire cooling water circulation system to operate continuously and reliably.

[0017] In another preferred embodiment of the present utility model, the cooling water softening and filtering assembly further includes a liquid replenishing assembly connected to the adsorption and filtration tank to introduce an adsorption liquid into the inner cavity of the adsorption and filtration tank. Generally, an appropriate amount of adsorption liquid is contained in the adsorption and filtration tank, and the adsorption resin is immersed in the adsorption liquid, so as to wash away the metal substances separated from the coolant after the adsorption treatment through the adsorption liquid, avoiding the adsorption resin being coated with metal substances, thereby enabling the adsorption resin to always have a strong adsorption treatment capacity, so as to ensure the water softening treatment efficiency and high-strength working condition tolerance of the cooling water softening and filtering assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 FIG. is a schematic layout structure diagram of a cooling water circulation system composed of a cooling water softening and filtering assembly and a diesel engine according to a specific embodiment of the present utility model;

[0020] Figure 2 FIG. is a schematic layout structure diagram of a cooling water circulation system composed of a cooling water softening and filtering assembly and an air cooler according to a specific embodiment of the present utility model.

[0021] Wherein:

[0022] 10 - main pump; 101 - pressure control valve;

[0023] 11 - manganese sand tank;

[0024] 12 - cooling device; 121 - temperature measuring device; 122 - flow control valve;

[0025] 13 - adsorption and filtration tank; 131 - liquid supply pipe; 132 - feeding pipe;

[0026] 14 - impurity filter;

[0027] 15 - gas-liquid separation device; 151 - exhaust port; 152 - liquid outlet; 153 - sampling valve;

[0028] 16 - one-way valve;

[0029] 20 - diesel engine; 21 - expansion tank;

[0030] 30 - air cooler. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The core of the present utility model is to provide a cooling water softening and filtering component, which can timely and efficiently soften the cooling water, avoid the excessive hardness of the cooling water, and enable the entire cooling water circulation system to operate smoothly and reliably. In addition, a cooling water circulation system applying the above cooling water softening and filtering component is also provided.

[0032] In order to enable those skilled in the art to better understand the solution of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0033] It should be noted in advance that in the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] In addition, in the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them.

[0035] In addition to the above, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature. The orientation or positional relationship indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0036] Please refer to Figure 1 and Figure 2 .

[0037] In a specific embodiment, the cooling water softening and filtering assembly provided by the present utility model includes a main pump 10, a manganese sand tank 11, a cooling device 12, and an adsorption and filtration tank 13 that are connected in series along the liquid flow direction of the cooling water. An adsorption resin is installed in the inner cavity of the adsorption and filtration tank 13. The water inlet of the main pump 10 is connected downstream of the cooling water discharge port of the water-using equipment in the cooling water circulation system, and the drain port of the adsorption and filtration tank 13 is connected upstream of the cooling water supply port of the water-using equipment.

[0038] During the assembly, operation, and use process, the cooling water discharged from the water-using equipment is pumped by the main pump 10 to the downstream pipeline and flows through each device in sequence. The manganese sand in the manganese sand tank 11 can efficiently remove heavy metals such as iron mixed in the cooling water. The cooling water processed by the manganese sand tank 11 continues to flow into the adsorption and filtration tank 13, and the adsorption resin in the adsorption and filtration tank 13 is used to further remove the metal substances mixed in the cooling water. Thus, through the synergistic cooperation of the manganese sand tank 11 and the adsorption resin, the hardness of the cooling water is effectively reduced.

[0039] After the cooling water processed by the cooling water softening and filtering assembly is re-introduced into the water-using equipment, the generation of water scale can be effectively reduced, thereby avoiding the damage of related equipment due to excessive impurities and water scale in the cooling water, ensuring the stable and reliable operation of each water-using equipment, and enabling the entire cooling water circulation system to operate continuously and reliably.

[0040] Generally, an appropriate amount of adsorption liquid is placed in the adsorption and filtration tank 13, and the adsorption resin is immersed in the adsorption liquid, so as to wash away the metal substances separated from the coolant after the adsorption treatment through the adsorption liquid, avoiding the adsorption resin being coated with metal substances, thereby enabling the adsorption resin to always have a strong adsorption treatment ability, and ensuring the water softening treatment efficiency and high-strength working condition tolerance of the cooling water softening and filtering assembly.

[0041] Correspondingly, the cooling water softening and filtering assembly further includes a liquid replenishing assembly connected to the adsorption and filtration tank 13 to introduce the adsorption liquid into the inner cavity of the adsorption and filtration tank 13. Using the liquid replenishing assembly to introduce the adsorption liquid into the adsorption and filtration tank 13 can not only ensure the immersion of the adsorption resin in the adsorption and filtration tank 13, but also utilize the liquid flow of the adsorption liquid pouring into the adsorption and filtration tank 13 to form a certain scouring effect on the adsorption resin, so as to moderately wash and clean the adsorption resin, preventing metal substances or other impurities separated from the cooling water from adhering to the surface of the adsorption resin and having an adverse effect on the subsequent adsorption treatment effect of the adsorption resin, thereby effectively ensuring that the adsorption performance of the adsorption resin always remains stable and efficient.

[0042] Specifically in practical applications, the liquid supply component includes a liquid supply pipe 131 and a feed pipe 132. The liquid supply pipe 131 can not only introduce the adsorption liquid into the adsorption and filtration tank 13, but also discharge the adsorption liquid mixed with metal impurities after the adsorption and filtration process from the adsorption and filtration tank 13, so as to keep the concentration of the adsorbed impurities in the adsorption and filtration tank 13 within a reasonable range, avoid the accumulation of impurities in the inner cavity of the adsorption and filtration tank 13, and thus ensure the working efficiency of the adsorption resin.

[0043] It should be noted that the adsorption liquid is usually a salt solution. Considering the actual operating cost of the equipment and the treatment effect of the working conditions, the adsorption liquid is generally selected as sodium chloride solution, that is, brine. Correspondingly, the feed pipe 132 can supplement solutes such as sodium chloride into the adsorption and filtration tank 13 to keep the concentration of the adsorption liquid in the adsorption and filtration tank 13 within an appropriate range, and avoid the adverse effect on the adsorption performance of the adsorption resin due to too low concentration of the adsorption liquid.

[0044] Specifically, a cooling device 12 is connected between the manganese sand tank 11 and the adsorption and filtration tank 13. The cooling device 12 is used to cool down the cooling water treated by the manganese sand tank 11 so as to reduce the temperature of the cooling water to an appropriate value to match the temperature requirements of the downstream device working conditions, especially to avoid the decline of the adsorption performance of the adsorption resin caused by too high water temperature, and further affect the overall working performance of the cooling water softening and filtration component.

[0045] Specifically in practical applications, the cooling device 12 is usually selected as an air-cooled cooling device to meet the high-efficiency cooling treatment requirements of the cooling water. Of course, the staff can also select other types of cooling and cooling equipment as the specific application of the cooling device 12 according to the actual working conditions and application requirements. In principle, as long as it can meet the actual application needs of the cooling water softening and filtration component, it is acceptable.

[0046] On this basis, a temperature measuring device 121 is arranged at the water outlet end of the cooling device 12, and a flow control valve 122 is also connected between the cooling device 12 and the adsorption and filtration tank 13. The temperature measuring device 121 is used to detect the temperature of the cooling water at the water outlet end of the cooling device 12 in real time, so that when the water temperature detection value feedback by the temperature measuring device 121 exceeds the set temperature, the staff can timely reduce the flow rate of the cooling water flowing to the downstream pipeline and each relevant device through the flow control valve 122, so as to avoid the adverse effect of high-temperature large-flow cooling water on the main functional components such as the adsorption resin.

[0047] Generally, considering the working temperature of the adsorption resin under normal working conditions, the above set temperature is 45 °C, so as to avoid the decline of the adsorption capacity of the adsorption resin caused by too high water temperature, so that the working performance of the adsorption resin is always in a relatively efficient ideal state, and thus ensure the overall operation efficiency of the cooling water softening and filtration component.

[0048] More specifically, an impurity filter 14 is connected between the flow control valve 122 and the adsorption and filtration tank 13. The impurities mixed in the cooling water are further separated and removed through the impurity filter 14, so as to further improve the purification and filtration effect of the cooling water and meet the water use requirements of related equipment in the cooling water circulation system such as subsequent water-using equipment.

[0049] On the other hand, a gas-liquid separation device 15 is connected downstream of the adsorption and filtration tank 13. The liquid outlet 152 of the gas-liquid separation device 15 is connected to the cooling water supply port of the water-using equipment. An exhaust port 151 is provided at the top of the gas-liquid separation device 15, and the exhaust port 151 is higher than the liquid outlet 152. The gas-liquid separation device 15 is used to separate out the gas mixed in the cooling water, and these gases escape through the exhaust port 151, so as to prevent these gases from continuing to flow into the downstream cooling water circulation system pipeline along with the cooling water and causing adverse effects on the normal operation of the water-using equipment, and ensuring the stable operation of the water-using equipment.

[0050] Generally, the gas-liquid separation device 15 can be a tank-type container with enough space to properly statically place an appropriate amount of cooling water, or other container-type devices that can hold an appropriate amount of cooling water to allow the gas mixed in the water body to escape smoothly. The staff can flexibly select and adjust according to the actual application requirements and working conditions. In principle, as long as it can meet the actual application needs of the cooling water softening and filtration component, it is acceptable.

[0051] Usually, a sampling valve 153 is correspondingly provided at the exhaust port 151, so that the staff can sample the cooling water softened and filtered by each upstream functional device through the sampling valve 153, so as to grasp in real time the softening and filtration effect of the cooling water softening and filtration component on the cooling water, so as to timely adjust the operating state and working effect of each functional component when the cooling water treatment effect is poor or other situations occur, ensure that the cooling water softening and filtration component is always in a highly efficient and reliable operating state, and thus ensure that its softening and filtration effect on the cooling water meets the working conditions requirements.

[0052] Furthermore, a one-way valve 16 that only allows liquid to flow from the gas-liquid separation device 15 to the water-using equipment is connected between the liquid outlet 152 and the cooling water supply port of the water-using equipment. The one-way valve 16 can effectively prevent the cooling water in the water-using equipment from flowing back to the main pipeline of the cooling water softening and filtration component through the gas-liquid separation device 15, so as to avoid adverse effects such as reverse flow impact on core functional components such as the adsorption and filtration tank 13, and ensure the stable and reliable operation of each main functional device of the cooling water softening and filtration component.

[0053] In addition, in order to further improve the controllability of the operating conditions of the cooling water softening and filtering assembly, a pressure control valve 101 can be connected in parallel at the main pump 10, so as to be able to flexibly adjust the pumping pressure when the main pump 10 delivers cooling water to the downstream pipeline as necessary, and make the water pressure at each pipeline in the cooling water softening and filtering assembly within the range suitable for the operating conditions.

[0054] In a specific embodiment, the cooling water circulation system provided by the present utility model includes a cooling water pipeline and a water-using device that are connected and cooperated with each other, and further includes a cooling water softening and filtering assembly that is connected and cooperated with the water-using device, and the cooling water softening and filtering assembly is the cooling water softening and filtering assembly as described above. The cooling water softening and filtering assembly of this cooling water circulation system can perform timely and efficient softening treatment on the cooling water, avoid the hardness of the cooling water exceeding the standard, and enable the entire cooling water circulation system to operate stably and reliably.

[0055] Furthermore, the water-using device can be a diesel engine 20 as shown in Figure 1 or an air cooler 30 as shown in Figure 2 Figure.

[0056] It should be particularly noted that in practical applications, the inlet end and the outlet end of the cooling water softening and filtering assembly can be detachably connected to the main pipeline and equipment of the cooling water circulation system respectively.

[0057] Specifically in this solution, the inlet of the main pump 10 can be directly connected to the main pipeline of the diesel engine 20 cooling water circulation system, the outlet of the expansion tank 21 or the main pipeline of the air cooler 30 cooling water circulation system through devices such as a flange or a transfer valve that are convenient for disassembly and assembly, and the liquid outlet 152 of the gas-liquid separation device 15 can be directly connected to the main pipeline of the diesel engine 2020 cooling water circulation system or the main pipeline of the air cooler 30 cooling water circulation system through a transfer device such as a flange or a transfer valve that is convenient for disassembly and assembly.

[0058] Thus, after the cooling water in the corresponding cooling water circulation system is softened and filtered to the state suitable for the operating conditions, the cooling water softening and filtering assembly can be integrally removed from the current assembly position, and the interfaces in the cooling water circulation system connected to the cooling water softening and filtering assembly can be temporarily sealed, so as to realize the overall external connection and removal of the cooling water softening and filtering assembly, thereby effectively reducing the operating load of the cooling water circulation system, reducing the system operating cost, and improving the cooling water circulation efficiency in the cooling water circulation system when the cooling water does not need to be softened and filtered. When it is necessary to re-soften and filter the cooling water in the system, the cooling water softening and filtering assembly can be reconnected to the corresponding interface and the corresponding assembly with the main pipeline of the cooling water circulation system can be completed.

[0059] In summary, the cooling water softening and filtering component provided in the present utility model includes a main pump, a manganese sand tank, a cooling device, and an adsorption and filtration tank that are connected in sequence along the liquid flow direction of the cooling water. An adsorption resin is installed in the inner cavity of the adsorption and filtration tank. The water inlet of the main pump is connected downstream of the cooling water discharge port of the water-using equipment in the cooling water circulation system, and the drain port of the adsorption and filtration tank is connected upstream of the cooling water supply port of the water-using equipment.

[0060] During its assembly, operation, and use, the cooling water discharged from the water-using equipment is pumped by the main pump to the downstream pipeline and flows through each device in sequence. The manganese sand in the manganese sand tank can efficiently remove heavy metals such as iron mixed in the cooling water. The cooling water treated by the manganese sand tank continues to flow into the adsorption and filtration tank, and the adsorption resin in the adsorption and filtration tank is used to further remove the metal substances mixed in the cooling water. Thus, through the synergistic cooperation of the manganese sand tank and the adsorption resin, the hardness of the cooling water is effectively reduced. After the cooling water treated by the cooling water softening and filtering component is re-introduced into the water-using equipment, the generation of scale can be effectively reduced, thereby avoiding the damage of related equipment due to excessive impurities and scale in the cooling water, ensuring the stable and reliable operation of each water-using equipment, and enabling the entire cooling water circulation system to operate continuously and reliably.

[0061] The present utility model also provides a cooling water circulation system. Its cooling water softening and filtering component can perform timely and efficient softening treatment on the cooling water, avoid the excessive hardness of the cooling water, and enable the entire cooling water circulation system to operate stably and reliably.

[0062] The above has introduced in detail the cooling water softening and filtering component provided by the present utility model and the cooling water circulation system applying this cooling water softening and filtering component. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A cooling water softening filter assembly, characterized in that: It includes a main pump, a manganese sand tank, a cooling device and an adsorption filter tank which are connected along the flow direction of cooling water. The inner cavity of the adsorption filter tank is filled with adsorption resin. The water inlet of the main pump is connected to the downstream of the cooling water discharge port of the water-using equipment in the cooling water circulation system, and the drain outlet of the adsorption filter tank is connected to the upstream of the cooling water supply port of the water-using equipment.

2. The cooling water softening filter assembly according to claim 1, characterized in that: It also includes a liquid replenishing component which is connected with the adsorption filter tank so as to introduce adsorption liquid into the inner cavity of the adsorption filter tank.

3. The cooling water softening filter assembly according to claim 1, characterized in that: A cooling device is connected between the manganese sand tank and the adsorption filter tank.

4. The cooling water softening filter assembly according to claim 3, characterized in that: A temperature measuring device is provided at the water outlet of the cooling device, and a flow control valve is also connected between the cooling device and the adsorption filter tank.

5. The cooling water softening filter assembly according to claim 4, characterized in that: An impurity filter is connected between the flow control valve and the adsorption filter tank.

6. The cooling water softening filter assembly according to claim 1, characterized in that: A gas-liquid separation device is connected downstream of the adsorption filter tank, and a liquid outlet of the gas-liquid separation device is connected to a cooling water supply port of a water-using device. An exhaust port is provided on the top of the gas-liquid separation device, and the exhaust port is higher than the liquid outlet.

7. The cooling water softening filter assembly according to claim 6, characterized in that: A sampling valve is arranged at the exhaust port.

8. The cooling water softening filter assembly according to claim 7, characterized in that: A one-way valve is connected between the liquid outlet and the cooling water supply port of the water-using equipment, which only allows the liquid to flow from the gas-liquid separation device to the water-using equipment.

9. A cooling water circulation system, comprising cooling water pipes and water-using equipment interconnected and coordinated with each other, characterized in that: It also includes a cooling water softening filter component connected and coordinated with the water-using equipment, and the cooling water softening filter component is the cooling water softening filter component as described in any one of claims 1 to 8.

10. The cooling water circulation system according to claim 9, characterized in that: The water-using equipment is a diesel engine or an air cooler.

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