CN211078640U - Converter station external cooling water treatment system and converter station - Google Patents
Converter station external cooling water treatment system and converter station Download PDFInfo
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- CN211078640U CN211078640U CN201921502435.0U CN201921502435U CN211078640U CN 211078640 U CN211078640 U CN 211078640U CN 201921502435 U CN201921502435 U CN 201921502435U CN 211078640 U CN211078640 U CN 211078640U
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- 239000000498 cooling water Substances 0.000 title claims abstract description 173
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 198
- 238000001816 cooling Methods 0.000 claims abstract description 85
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 69
- 238000011033 desalting Methods 0.000 claims abstract description 19
- 238000001704 evaporation Methods 0.000 claims description 39
- 230000008020 evaporation Effects 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 31
- 239000004576 sand Substances 0.000 claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 18
- 238000011045 prefiltration Methods 0.000 claims description 16
- 239000000645 desinfectant Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 6
- 238000010612 desalination reaction Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
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- 238000012545 processing Methods 0.000 abstract description 15
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- 238000003912 environmental pollution Methods 0.000 abstract description 8
- 238000012546 transfer Methods 0.000 abstract description 4
- 125000004122 cyclic group Chemical group 0.000 abstract description 3
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- 238000000034 method Methods 0.000 description 11
- 230000001502 supplementing effect Effects 0.000 description 11
- 229910017053 inorganic salt Inorganic materials 0.000 description 10
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- 238000006243 chemical reaction Methods 0.000 description 4
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- 239000002253 acid Substances 0.000 description 3
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- 239000002826 coolant Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a converter station external cooling water treatment system and converter station. The converter station includes converter valve, interior cold system, outer cold system, and outer cold system includes the cooling tower and communicates for the outer cooling water container or the buffer pool of cooling tower provided outer cooling water with the cooling tower, and the converter station still includes the outer cooling water processing system of converter station, and the outer cooling water processing system of converter station includes: the system comprises a water treatment circulation loop, a reverse osmosis filter arranged on the water treatment circulation loop and a desalting device for desalting concentrated water produced by the reverse osmosis filter. Set up water treatment circulation circuit and carry out the heat transfer outside cooling water and interior cold tube and filter the external cooling water through reverse osmosis filter simultaneously, got rid of the metal ion in the external cooling water, make external cooling water can cyclic utilization, the dense water of reverse osmosis filter output removes the salt through demineralizer, avoids causing environmental pollution, has also realized the zero release of dense water.
Description
Technical Field
The utility model relates to a converter station external cooling water treatment system and converter station.
Background
Compared with the existing alternating current transmission, the direct current transmission has the characteristics of less transmission materials, small line active loss, high system stability and the like, particularly in the large-scale and long-distance transmission process, the advantages of the direct current transmission are more and more obvious, and along with the development of the ultra-high voltage technology in recent years, the direct current transmission is widely applied to trans-regional electric energy transmission. In the direct-current power transmission process with a high voltage level, a large-scale converter station needs to be arranged to realize the conversion between alternating current and direct current, a converter valve in the converter station generates a large amount of heat in the conversion process of the alternating current and the direct current, the converter station needs to be provided with a cooling system to cool the converter valve, and the reliable and efficient operation of the converter station is ensured.
The current direct current transmission system converter station mainly adopts a water-water heat exchange cooling system, water is adopted to cool the converter station, an internal cooling system arranged inside the converter station cools a converter valve, an external cooling system in the converter station exchanges heat with the internal cooling system to take away heat of the internal cooling system, and effective cooling of the converter valve by the internal cooling system is realized. But including the heat transfer in-process of cold system and outer cold system, have certain requirement to the quality of water of the external cooling water in the outer cold system, provide a direct current converter station with outer cooling circulating water zero release processing system in the utility model patent that the publication number is CN22865040U, in this system with the blow off water get into in proper order from cleaning filter, tubular micro-filtration device and second grade reverse osmosis filter back flow to spray the pond in, improved the utilization ratio of external cooling water.
However, in the above treatment process, the external cooling water may generate concentrated water containing high concentration of metal ions in the treatment process, but the above system does not provide a method for disposing the concentrated water, and if the part of concentrated water is directly discharged, environmental pollution may be caused, and the converter station may not achieve zero emission of the concentrated water.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an external cooling water treatment system of a convertor station, which is used for solving the problem of environmental pollution caused by direct discharge of concentrated water in the prior art; simultaneously the utility model also provides a current conversion station of realizing dense water zero release.
In order to achieve the above object, the present invention provides a cooling water treatment system for a converter station, wherein the cooling water treatment system for a converter station comprises:
a water treatment circulation loop having a water inlet and a water outlet for communication with an external cooling water container or a buffer pool;
the reverse osmosis filter or the reverse osmosis filter group is arranged on the water treatment circulating loop; the reverse osmosis filters of all stages in the reverse osmosis filter group are arranged in series or in parallel or are arranged in a series-parallel mixed way;
and the desalting device is communicated with the concentrated water outlet of the reverse osmosis filter and is used for desalting the concentrated water produced by the reverse osmosis filter.
The utility model discloses outer cooling water processing system of convertor station's beneficial effect is: the external cooling water flows back to the external cooling water container or the buffer water tank after exchanging heat with the internal cooling system, a water inlet and a water outlet of the water treatment circulating loop are communicated with the external cooling water container or the buffer water tank to form a circulating loop, a reverse osmosis filter or a reverse osmosis filter group is arranged on the water treatment circulating loop, the external cooling water in the external cooling water container or the buffer water tank is subjected to reverse osmosis filtration while exchanging heat with the internal cooling pipe, metal ions in the external cooling water are effectively removed, the external cooling water can be recycled, and the concentrated water produced in the reverse osmosis filtration process is desalted through the desalting device, so that the environmental pollution is avoided, and the problem of environmental pollution caused by direct discharge of the concentrated water is solved.
Furthermore, the desalting device comprises an evaporation tower and a solid-liquid separator for performing solid-liquid separation on suspension flowing out of the evaporation tower, wherein a liquid outlet of the solid-liquid separator is communicated with the evaporation tower, so that liquid separated by the solid-liquid separator flows back to the evaporation tower.
Has the advantages that: the energy consumption of desalting by an evaporation mode is low, solid salt crystals are removed by the solid-liquid separator, and the liquid separated by the solid-liquid separator flows back to the evaporation tower again to be evaporated, so that the zero emission of concentrated water is realized.
Further, at least two evaporation towers are arranged in parallel.
Has the advantages that: the provision of at least two evaporation towers enables the evaporation efficiency of water in the concentrate to be improved.
Furthermore, a pre-filter which is arranged at the upstream of the reverse osmosis filter and is used for pre-filtering the external cooling water is arranged on the water treatment circulating loop.
Has the advantages that: the pre-filter is arranged to filter the external cooling water, so that impurities in the external cooling water are prevented from damaging the reverse osmosis filter.
Furthermore, a water replenishing interface at the upstream of the pre-filter is also arranged on the water treatment circulating loop.
Has the advantages that: in the heat exchange process of the external cooling water and the internal cooling pipe, the external cooling water can be continuously evaporated, a water supplementing interface is arranged on the water treatment circulating loop for supplementing water, and meanwhile, the water supplementing interface is positioned at the upstream of the pre-filter, so that the supplemented external cooling water is also filtered.
Furthermore, a water replenishing interface at the upstream of the reverse osmosis filter is also arranged on the water treatment circulating loop.
Has the advantages that: and a water replenishing interface is arranged at the upstream of the reverse osmosis filter, so that the replenished external cooling water is also filtered.
Furthermore, an acid-base dosing device used for dosing the external cooling water to adjust the pH value of the external cooling water is further arranged on the water treatment circulating loop at the upstream of the reverse osmosis filter.
Has the advantages that: the acid-base dosing device is arranged to adjust the pH value of the external cooling water, so that the external cooling water is prevented from damaging the reverse osmosis filter.
The utility model discloses the technical scheme of convertor station is, convertor station includes the convertor valve, carries out refrigerated interior cooling system to the convertor valve, carries out the outer cold system of heat transfer with interior cooling system, outer cold system includes the cooling tower, provides the outer cooling water container or the buffering pond of outer cooling water for the cooling tower with the cooling tower intercommunication, convertor station still includes the convertor station outer cooling water processing system that outer cooling water in outer cooling water container or the buffering pond carries out the processing, convertor station outer cooling water processing system includes:
a water treatment circulation loop having a water inlet and a water outlet for communication with an external cooling water container or a buffer pool;
the reverse osmosis filter or the reverse osmosis filter group is arranged on the water treatment circulating loop; the reverse osmosis filters of all stages in the reverse osmosis filter group are arranged in series or in parallel or are arranged in a series-parallel mixed way;
and the desalting device is communicated with the concentrated water outlet of the reverse osmosis filter and is used for desalting the concentrated water produced by the reverse osmosis filter.
The utility model discloses converter station's beneficial effect is: the external cooling water flows back to the external cooling water container or the buffer water tank after exchanging heat with the internal cooling system, a water inlet and a water outlet of the water treatment circulating loop are communicated with the external cooling water container or the buffer water tank to form a circulating loop, a reverse osmosis filter or a reverse osmosis filter group is arranged on the water treatment circulating loop, the external cooling water in the external cooling water container or the buffer water tank is subjected to reverse osmosis filtration while exchanging heat with the internal cooling pipe, metal ions in the external cooling water are effectively removed, the external cooling water can be recycled, and the concentrated water produced in the reverse osmosis filtration process is desalted through the desalting device, so that the environmental pollution is avoided, and the zero emission of the concentrated water is also realized.
Furthermore, the desalting device comprises an evaporation tower and a solid-liquid separator for performing solid-liquid separation on suspension flowing out of the evaporation tower, wherein a liquid outlet of the solid-liquid separator is communicated with the evaporation tower, so that liquid separated by the solid-liquid separator flows back to the evaporation tower.
Has the advantages that: the energy consumption of desalting by an evaporation mode is low, solid salt crystals are removed by the solid-liquid separator, and the liquid separated by the solid-liquid separator flows back to the evaporation tower again to be evaporated, so that the zero emission of concentrated water is realized.
Further, at least two evaporation towers are arranged in parallel.
Has the advantages that: the provision of at least two evaporation towers enables the evaporation efficiency of water in the concentrate to be improved.
Furthermore, a pre-filter which is arranged at the upstream of the reverse osmosis filter and is used for pre-filtering the external cooling water is arranged on the water treatment circulating loop.
Has the advantages that: the pre-filter is arranged to filter the external cooling water, so that impurities in the external cooling water are prevented from damaging the reverse osmosis filter.
Furthermore, a water replenishing interface at the upstream of the pre-filter is also arranged on the water treatment circulating loop.
Has the advantages that: in the heat exchange process of the external cooling water and the internal cooling pipe, the external cooling water can be continuously evaporated, a water supplementing interface is arranged on the water treatment circulating loop for supplementing water, and meanwhile, the water supplementing interface is positioned at the upstream of the pre-filter, so that the supplemented external cooling water is also filtered.
Furthermore, a water replenishing interface at the upstream of the reverse osmosis filter is also arranged on the water treatment circulating loop.
Has the advantages that: and a water replenishing interface is arranged at the upstream of the reverse osmosis filter, so that the replenished external cooling water is also filtered.
Furthermore, an acid-base dosing device used for dosing the external cooling water to adjust the pH value of the external cooling water is further arranged on the water treatment circulating loop at the upstream of the reverse osmosis filter.
Has the advantages that: the acid-base dosing device is arranged to adjust the pH value of the external cooling water, so that the external cooling water is prevented from damaging the reverse osmosis filter.
Furthermore, the external cooling system also comprises a sand filter for filtering and removing impurities from external cooling water, the sand filter is arranged on one side of the external cooling water container communicated with the cooling tower, and a water inlet pipe and a water outlet pipe of the sand filter are both communicated with the external cooling water container; or the sand filter is arranged on one side of the buffer water tank communicated with the cooling tower, and the water inlet pipe and the water outlet pipe of the sand filter are communicated with the buffer water tank.
Has the advantages that: the sand filter can remove sundries which enter the external cooling water container or the buffer water tank along with the external cooling water, and the cleanness degree of the external cooling water is improved.
Furthermore, a water outlet pipe of the sand filter is also connected with a disinfectant dosing device for adding disinfectant into the external cooling water container or the buffer water tank.
Has the advantages that: set up disinfectant charge device and can add disinfectant in the outside cooling water, disinfect and disinfect to outside cooling water.
Drawings
Fig. 1 is a simplified flow diagram of an embodiment of a converter station according to the present invention;
FIG. 2 is a schematic flow diagram of the cooling water treatment system outside the converter station of FIG. 1;
wherein: 1-an internal cooling system, 2-a cooling tower, 3-a convertor station external cooling water treatment system, 4-a cooling pipe, 5-a buffer water tank, 6-an industrial water tank, 7-an activated carbon filter, 8-a hydrocyclone separator, 9-a reverse osmosis filter, 10-a water treatment circulation loop, 11-a sand filter, 12-an acid and alkali dosing device, 13-an evaporation tower and 14-a disinfectant dosing device.
Detailed Description
The embodiments of the cooling water treatment system outside the converter station according to the present invention will be further described with reference to the accompanying drawings.
The utility model discloses an embodiment of outer cooling water processing system of convertor station, as shown in FIG. 2, outer cooling water processing system of convertor station is arranged in handling the outer cooling water in buffer pool 5, outer cooling water processing system of convertor station includes the hydrologic cycle processing return circuit 10 with buffer pool 5 intercommunication, set up on hydrologic cycle processing return circuit 10 reverse osmosis filter group and with the desalination device of the dense water export intercommunication in the reverse osmosis filter group, the water inlet and the delivery port of hydrologic cycle processing return circuit 10 all communicate with buffer pool 5, form circulation loop.
The water treatment circulation loop 10 is provided with a prefilter and a reverse osmosis filter group in sequence along the flowing direction of external cooling water, the prefilter is an activated carbon filter 7, fine particles and impurities in the external cooling water can be adsorbed, the cleanness degree of the external cooling water is improved, the impurities are prevented from damaging the downstream reverse osmosis filter group, the reverse osmosis filter group can remove metal ions in the external cooling water, and the external cooling water is enabled to keep qualified water quality.
The reverse osmosis filter group in the embodiment is formed by four reverse osmosis filters 9 which are arranged in series, and a concentrated water outlet of each reverse osmosis filter 9 is connected with a desalting device; the water production capacity of each reverse osmosis filter 9 is not lower than 66 percent, the water production capacity of the whole four-stage series reverse osmosis filter group is not lower than 98 percent, and concentrated water with the concentration not higher than 2 percent is produced; the external cooling water can be recycled after being filtered by the reverse osmosis, the external cooling water in the buffer pool 5 does not need to be replaced, the utilization rate of water resources is improved, and the waste of the water resources is also avoided.
The concentrated water of output contains a large amount of metal ions after the external cooling water filters through reverse osmosis filter 9, and the metal ions in the concentrated water can be got rid of to the demineralizer among the outer cooling water treatment system of convertor station, prevents to cause the pollution to the environment.
The desalting device comprises an evaporation tower 13 communicated with concentrated water outlets of the reverse osmosis filters 9 and a solid-liquid separator communicated with the evaporation tower 13, the evaporation tower 13 is an open type spraying evaporation tower, concentrated water enters the evaporation tower 13 and is sprayed from the upper part in the tower, water mist is formed in the tower, water vapor is discharged by matching with a gas/liquid separation device and a high-power fan at the top of the tower, high-salinity concentrated water is evaporated to form saturated solution, and part of inorganic salt is separated out to form turbid liquid. The evaporation tower 13 is provided with two stages in parallel, so that the evaporation efficiency can be improved.
The solid-liquid separator is a hydrocyclone separator 8, the suspension subjected to water removal by the evaporation tower 13 enters the hydrocyclone separator 8, liquid and solid in the suspension are separated under the action of gravity and circular motion to obtain solid inorganic salt, the separated liquid enters the evaporation tower 13 again for evaporation, and the separated inorganic salt is discharged from an outlet at the lower end of the hydrocyclone separator 8.
After the desalting by the desalting device, water in the concentrated water is completely evaporated, only solid inorganic salt is left, no concentrated water is discharged in the whole water treatment process, the pollution to the environment is avoided, and the zero discharge of the concentrated water of the cooling water treatment system outside the convertor station is realized.
When the external cooling water in the buffer water tank 5 is reduced, water needs to be replenished into the buffer water tank 5. The water treatment circulating loop 10 is provided with a water supplementing interface, the water supplementing interface is arranged on the activated carbon filter 7, an external water source in an external industrial water tank 6 is conveyed into the buffer water tank 5 along the water treatment circulating loop 10 through a water pump, and the external water source is also subjected to water treatment through the water treatment circulating loop 10 during water supplementing, so that the water supplemented into the buffer water tank 5 meets the water quality use standard of the converter station external cooling water treatment system. Because activated carbon filter 7 still is linked together with buffering pond 5, in order to prevent that the water of outside water source from directly getting into buffering pond 5 through activated carbon filter 7, set up check valve or check valve on the water treatment circulation circuit 10 between activated carbon filter 7 and buffering pond 5, prevent when moisturizing to buffering pond 5, outside water source directly gets into buffering pond 5 by the moisturizing interface.
An acid-base dosing device 12 is connected to a pipeline between the activated carbon filter 7 and the upstream reverse osmosis filter 9 and used for adjusting the pH value of the external cooling water and avoiding the external cooling water from damaging the reverse osmosis filter 9.
The converter station external cooling water treatment system in the embodiment can uninterruptedly filter the external cooling water in the buffer water tank, so that the external cooling water can keep good water quality. The outer cooling water processing system of current conversion station not only can filter the external cooling water in the buffering pond, the water that can also mend the buffering pond to the external world filters, and the dense water that produces at the water treatment process of whole external cooling water has obtained solid-state inorganic salt through the demineralizer, there is not the emission of dense water, the dense water zero release of outer cold system has been realized, the environmental pollution who directly discharges and cause because of external cooling water and dense water has been avoided, the external cooling water cyclic utilization has been realized simultaneously, the waste of water resource has been avoided.
It should be noted that fig. 2 in the embodiment of the present invention is a schematic diagram, and devices such as a water pump, a valve, and a sensor that are conventionally configured are omitted.
In other embodiments, the converter station external cooling water treatment system may not be used for treating external cooling water in an external cooling system of the converter station, or may be used for treating circulating water used for cooling a condenser in a power plant, or treating cooling water in water cooling equipment in the chemical industry.
In other embodiments, the external cooling water in the buffer water tank may not be continuously filtered, but a detection device may be disposed in the buffer water tank, and when the concentration of the metal ions in the external cooling water is higher than a set value, the converter station external cooling water treatment system is started to filter the external cooling water.
In other embodiments, the reverse osmosis filter group may also include two, three or at least five reverse osmosis filters, and the arrangement of the reverse osmosis filters may also adopt a parallel connection or a series-parallel connection mixed arrangement. Of course, it is also possible to provide only one reverse osmosis filter with a high water production rate instead of the reverse osmosis filter bank.
In other embodiments, the converter station external cooling water treatment system can also treat external cooling water stored in an external cooling water container, which can be a water storage tank or a water tank.
In other embodiments, the desalination device may also be an electric desalination apparatus.
In other embodiments, only one or at least three evaporation towers may be provided, and the arrangement of the evaporation towers may also be in a serial manner or in a mixed manner of serial and parallel.
In other embodiments, the desalination apparatus may be provided without a centrifugal separator, and only the evaporation of the evaporation tower is used to precipitate the inorganic salt.
In other embodiments, the water treatment circulation loop may not have a pre-filter.
In other embodiments, the pre-filter may also be a screen.
In other embodiments, the solid-liquid separator may also be a filter screen, and the solid inorganic salt in the suspension is filtered by the filter screen.
In other embodiments, when the water quality in the industrial pond is high, the water replenishing interface can be arranged between the pre-filter and the reverse osmosis filter. When the water supplementing interface is arranged on the buffer water pool corresponding to the converter station external cooling water treatment system, the water supplementing interface is not required to be arranged on the water treatment circulating loop.
In other embodiments, an acid-base addition device may also be provided upstream of the pre-filter. When the buffer water tank corresponding to the cooling water treatment system outside the convertor station is provided with the acid-base dosing device, the acid-base dosing device is not arranged on the water treatment circulating loop.
The utility model discloses an embodiment of converter station, as shown in fig. 1 and fig. 2, including carrying out refrigerated interior cooling system 1 to the converter valve in the converter station, carry out the outer cold system of heat transfer with interior cooling system 1, wherein outer cold system includes cooling tower 2 and with cooling tower 2 intercommunication and form circulation circuit's buffer pool 5, the converter station still includes the converter station external cooling water processing system 3 that handles the external cooling water in buffer pool 5.
The cooling medium in the internal cooling system 1 exchanges heat with a converter valve in a converter station and then enters a cooling pipe 4, the cooling pipe 4 is arranged in the cooling tower 2, and the cooling medium in the cooling pipe 4 exchanges heat with a cooling water treatment system 3 outside the converter station in the cooling tower 2 to take away heat in the cooling medium. The cooling pipes 4 in this embodiment enter the three cooling towers 2 connected in parallel to exchange heat, which is helpful to improve the heat exchange efficiency of the internal cooling system 1.
The structure of the internal cooling system 1 is the same as that of the internal cooling system in the converter station in the prior art and will not be described again.
The cooling tower 2 is an open type cooling tower, heat dissipation is facilitated, in the cooling tower 2, external cooling water in the buffer water tank 5 is directly sprayed on the outer surface of the cooling pipe 4, the cooling pipe 4 isolates cooling media in the internal cooling system 1 from the external cooling water in the convertor station external cooling water treatment system 3, and the heat dissipation efficiency of the cooling pipe 4 is accelerated in the cooling tower 2 in a mode of increasing air circulation.
In this embodiment, the buffer water tank 5 is used for storing external cooling water, the buffer water tank 5 has a large volume, and can meet the heat dissipation requirement of the internal cooling system 1, and the external cooling water in the buffer water tank 5 is conveyed to the cooling tower 2 through the water pump, exchanges heat with the cooling pipe 4, and then returns to the buffer water tank 5.
In the process of exchanging heat between the external cooling water and the internal cooling pipe 4, because the concentration of metal ions in the external cooling water can be gradually increased due to the evaporation effect, inorganic salt formed by the metal ions can form scale on the pipe wall of the internal cooling pipe 4 to influence the normal operation of the converter station, and in order to remove the metal ions in the external cooling water, the converter station external cooling water treatment system 3 is arranged in the converter station to treat the external cooling water.
The structure and the flow of the converter station external cooling water treatment system 3 are the same as those of the converter station external cooling water treatment system in the above embodiment of the converter station external cooling water treatment system, and are not described again here.
Because the cooling tower 2 is an open type cooling tower, external impurities inevitably fall into the cooling tower 2 and enter the buffer water pool 5 along with external cooling water; the delivery port one side of buffer pool 5 and cooling tower 2 intercommunication is provided with sand filter 11, sand filter 11's inlet tube and outlet pipe all communicate with buffer pool 5, filter circuit of cleaing away debris has been formed with buffer pool 5, the filtration of going on the external cooling water in buffer pool 5 through sand filter 11, get rid of the debris in the external cooling water, still be connected with disinfectant charge device 14 on the outlet pipe of sand filter 11 and buffer pool 5 intercommunication, be arranged in to adding disinfectant in buffer pool 5, disinfect and disinfect to the external cooling water.
It should be noted that fig. 1 and fig. 2 in the embodiment of the present invention are schematic diagrams, and devices such as water pumps, valves, and sensors that are conventionally configured in an internal cooling system, an external cooling system, and an external cooling water treatment system of a converter station are omitted.
The solid inorganic salt is finally obtained in the whole water treatment process of the external cooling water, the zero discharge of the concentrated water of the external cooling system is realized, the environmental pollution caused by the direct discharge of the external cooling water and the concentrated water is avoided, the cyclic utilization of the external cooling water is realized, and the waste of water resources is avoided.
When the converter station works in the embodiment, the external cooling water in the external cooling system dissipates heat to the internal cooling system 1, meanwhile, the external cooling water in the buffer water tank 5 is uninterruptedly filtered by the converter station external cooling water treatment system 3, impurities and metal ions in the external cooling water are removed, normal operation of the converter station is guaranteed, the concentrated water produced by the reverse osmosis filter 9 forms solid inorganic salt after being desalted by the desalting device, and zero discharge of the concentrated water of the converter station is realized.
In other embodiments, a detection device may be disposed in the buffer water tank, and when the concentration of the metal ions in the external cooling water is higher than a set value, the converter station external cooling water treatment system is started to filter the external cooling water.
In other embodiments, the external cooling water may not be stored in the buffer water pool, but the external cooling water may be stored in an external cooling water container, which may be a water storage tank or a water tank, to prevent external impurities from directly entering the external cooling water.
In other embodiments, the buffer pool may be a water storage space at the bottom of the cooling tower, but it is necessary to provide each cooling tower with an external cooling water treatment system.
In other embodiments, the acid and alkali dosing device is not arranged, or the acid and alkali dosing device is directly connected with the buffer water tank.
In other embodiments, the sand filter is not connected with the buffer water pool, but is connected with the cooling tower; or a sand filter is not arranged, but a sedimentation tank is arranged in the cooling tower or the buffer water pool, so that impurities in the external cooling water are precipitated and discharged.
In other embodiments, the disinfectant dosing device may not be provided.
Claims (10)
1. The cooling water treatment system outside the converter station is characterized by comprising:
a water treatment circulation loop having a water inlet and a water outlet for communication with an external cooling water container or a buffer pool;
the reverse osmosis filter or the reverse osmosis filter group is arranged on the water treatment circulating loop; the reverse osmosis filters of all stages in the reverse osmosis filter group are arranged in series or in parallel or are arranged in a series-parallel mixed way;
and the desalting device is communicated with the concentrated water outlet of the reverse osmosis filter and is used for desalting the concentrated water produced by the reverse osmosis filter.
2. The system for treating cooling water outside a converter station according to claim 1, wherein the desalination device comprises an evaporation tower and a solid-liquid separator for performing solid-liquid separation on suspension flowing out of the evaporation tower, and a liquid outlet of the solid-liquid separator is communicated with the evaporation tower, so that liquid separated by the solid-liquid separator flows back to the evaporation tower.
3. The system for treating cooling water outside a converter station according to claim 2, wherein at least two of said evaporation towers are arranged in parallel.
4. The system for treating cooling water outside a converter station according to claim 1, 2 or 3, wherein a pre-filter for pre-filtering the cooling water outside is arranged on the water treatment circulation loop and is arranged upstream of the reverse osmosis filter.
5. The system for treating cooling water outside the converter station according to claim 4, wherein a water replenishing interface is further arranged on the water treatment circulating loop and is located upstream of the pre-filter.
6. The system for treating cooling water outside the converter station according to claim 1, 2 or 3, wherein a water replenishing interface is further arranged on the water treatment circulating loop and is positioned upstream of the reverse osmosis filter.
7. The system for treating the cooling water outside the converter station according to claim 1, 2 or 3, wherein an acid-base dosing device for dosing the external cooling water to adjust the pH value of the external cooling water is further arranged on the water treatment circulating loop upstream of the reverse osmosis filter.
8. The converter station comprises a converter valve, an inner cooling system for cooling the converter valve, and an outer cooling system for exchanging heat with the inner cooling system, wherein the outer cooling system comprises a cooling tower, an outer cooling water container or a buffer water pool communicated with the cooling tower and used for providing outer cooling water for the cooling tower, and the converter station further comprises an outer cooling water treatment system for treating the outer cooling water in the outer cooling water container or the buffer water pool, and the converter station outer cooling water treatment system is characterized in that the converter station outer cooling water treatment system is the converter station outer cooling water treatment system in any one of claims 1 to 7.
9. The converter station according to claim 8, wherein the external cooling system further comprises a sand filter for filtering and removing impurities from the external cooling water, the sand filter is arranged on one side of the external cooling water container communicated with the cooling tower, and a water inlet pipe and a water outlet pipe of the sand filter are both communicated with the external cooling water container; or the sand filter is arranged on one side of the buffer water tank communicated with the cooling tower, and the water inlet pipe and the water outlet pipe of the sand filter are communicated with the buffer water tank.
10. The converter station according to claim 9, characterized in that a disinfectant dosing device for adding disinfectant into the external cooling water container or the buffer water tank is further connected to the water outlet pipe of the sand filter.
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| CN201921502435.0U CN211078640U (en) | 2019-09-10 | 2019-09-10 | Converter station external cooling water treatment system and converter station |
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| CN201921502435.0U CN211078640U (en) | 2019-09-10 | 2019-09-10 | Converter station external cooling water treatment system and converter station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112992488A (en) * | 2021-03-22 | 2021-06-18 | 保定天威保变电气股份有限公司 | Cooling method for flexible-direct transformer of internal circulation water cooling system |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112992488A (en) * | 2021-03-22 | 2021-06-18 | 保定天威保变电气股份有限公司 | Cooling method for flexible-direct transformer of internal circulation water cooling system |
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