CN217235909U - Power station refrigerating system's optimizing apparatus - Google Patents
Power station refrigerating system's optimizing apparatus Download PDFInfo
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- CN217235909U CN217235909U CN202123432502.6U CN202123432502U CN217235909U CN 217235909 U CN217235909 U CN 217235909U CN 202123432502 U CN202123432502 U CN 202123432502U CN 217235909 U CN217235909 U CN 217235909U
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Abstract
The utility model relates to an optimization device of a power station refrigeration system, which belongs to the technical field of power plant refrigeration, and comprises a main water chilling unit, an auxiliary water chilling unit, a water separator and a water collector, wherein the main water chilling unit is connected with the water separator through a water outlet main pipe; the water collector is connected with each cooling device and is connected with the vacuum pump deep cooling system through a vacuum pump cooling water return pipe, the water collector is connected with a water collection outlet pipe, the water collection outlet pipe is connected with a main chilled water circulating pump through a return main pipe, and the main chilled water circulating pump is connected with a main water chilling unit through a return main pipe; the auxiliary water chilling unit is connected with the vacuum water outlet pipe through an auxiliary water outlet pipe, and the auxiliary water outlet pipe is connected with the main water outlet pipe through a switching pipe. The utility model provides high refrigeration station system operation's stability makes vacuum pump degree of depth cooling system and air conditioning system both can reserve each other and can mutual independence, avoids mutual interference.
Description
Technical Field
The utility model relates to a power station refrigerating system's optimization device belongs to the refrigeration technology field of power plant.
Background
A power plant refers to a power plant that converts some form of raw energy into electrical energy for use in stationary facilities or for transportation, such as a thermal, hydraulic, steam, diesel, or nuclear power plant. A centralized refrigeration system is required to be arranged in a power plant to cool a main power house, a centralized control building cooling and ventilating air-conditioning system and a steam turbine side vacuum pump deep cooling system, the centralized refrigeration system generally comprises a water chilling unit, a cold water circulating pump, a water supplementing and pressure stabilizing device and the like, the water chilling system is designed into a primary pump variable flow closed circulation system, the water chilling unit side is in constant flow, a user side behind the water distributing and collecting device is in variable flow, and the water distributing and collecting device are automatically adjusted through a pressure difference bypass valve.
Under the full operation working condition of each water chilling unit of a refrigeration station system, the operation of the refrigeration station system can basically meet daily requirements, but because the air-cooled water chilling units have the characteristic that the output is reduced along with the increase of outdoor air temperature, the power plant power generation load and the internal cold demand can be always maintained at higher levels in the weather of higher outdoor air temperature, three water chilling units which are usually arranged at present run continuously at high load simultaneously, equipment faults are easily caused, the safety and the reliability of cold supply are difficult to ensure, according to the cold load demand, the deep cooling of a vacuum pump needs a conventional water temperature (about 15 ℃) and constant flow rate water chilling system, the air conditioning system needs a low-temperature cold water (7-12 ℃) and variable flow rate water chilling system simultaneously with the requirements of temperature reduction and dehumidification, and 1 set of refrigeration station system is jointly used by the current vacuum pump deep cooling system and the air conditioning system, so that the mutual interference problem exists, particularly, the cooling effect of the air conditioner is affected, so that improvement is urgently needed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the shortcoming that current power plant refrigerating system easily causes equipment trouble, is difficult to satisfy vacuum pump degree of depth cooling system and air conditioning system's operation requirement etc, the utility model discloses a power station refrigerating system's optimizing apparatus, it has improved the stability of refrigerating station system operation, makes vacuum pump degree of depth cooling system and air conditioning system can mutual independence, avoids mutual interference.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an optimization device of a power station refrigeration system comprises three main water chilling units, one auxiliary water chilling unit, a water distributor and a water collector, wherein water outlet ends of the three main water chilling units are connected with an input end of the water distributor through a water outlet main pipe, an output end of the water distributor is externally connected with a water inlet end of each cold device, the water distributor is connected with a water inlet end of a vacuum pump deep cooling system through a vacuum water outlet pipe, and a valve V is arranged on the vacuum water outlet pipe a (ii) a The input end of the water collector is connected with the water outlet end of each cooling device, the input end of the water collector is connected with the water outlet end of the deep cooling system of the vacuum pump through a vacuum water return pipe, and a valve V is arranged on the vacuum water return pipe b The output end of the water collector is connected with a water collecting outlet pipe, the water collecting outlet pipe is connected with a main chilled water circulating pump through a water return main pipe, and the main chilled water circulating pump is connected with the water inlet ends of the main water chilling units through a water return main pipe; the water outlet end of the auxiliary water chilling unit is connected with the vacuum water outlet pipe through an auxiliary water outlet pipe, the auxiliary water outlet pipe is connected with the main water outlet pipe through a switching pipe, and a valve V is arranged on the switching pipe c A valve V is arranged on the water outlet auxiliary pipe e And a valve V e Is arranged at the joint of the water outlet auxiliary pipe and the vacuum water outlet pipe and is connected with the water outlet pipeThe joint between the water auxiliary pipe and the switching pipe; the water inlet end of the auxiliary water chilling unit is connected with a vacuum water return pipe through a water return auxiliary pipe, the water return auxiliary pipe is connected with a water collecting and discharging pipe through a standby pipe, and a valve V is arranged on the standby pipe d A valve V is arranged on the return water secondary pipe f And a valve V f The device is arranged between the joint of the return water secondary pipe and the vacuum return pipe and the joint of the return water secondary pipe and the standby pipe, and the return water secondary pipe is also provided with an auxiliary chilled water circulating pump.
Furthermore, a connecting pipe is connected between the water outlet main pipe and the water return main pipe, and a differential pressure bypass valve and a differential pressure bypass electric regulating valve which are connected in parallel are arranged on the connecting pipe.
Furthermore, two filter screens which are connected in parallel are arranged on the return water main pipe.
Furthermore, the backwater main pipe is connected with a water supplementing booster pump, a connecting point of the water supplementing booster pump and the backwater main pipe is arranged in front of the filter screen, the water supplementing booster pump is respectively connected with a chilled water supplementing pressure stabilizing tank and a chilled water tank, and the input end of the chilled water tank is externally connected with demineralized water.
Furthermore, two auxiliary chilled water circulating pumps are arranged and are mutually connected in parallel.
Compared with the prior art the utility model discloses there are following characteristics and beneficial effect:
1. the utility model discloses a reliability of system has been improved greatly in the setting of vice cooling water set, can improve whole refrigerating system's the safety and stability operation of exerting oneself and ensure power plant equipment through operating mode one at any time summer extreme high temperature weather.
2. The utility model discloses a cooperation of main cooling water set and vice cooling water set, the function of make full use of operating mode one separates power station steam turbine side vacuum pump degree of depth cooling system and factory building air conditioning system cold source, has avoided two systems because the demand to the cold source temperature is different and cause mutual interference, can regard as mutual reserve again when main cooling water set and vice cooling water set independent operation simultaneously, has improved the reliability of whole power station refrigerating system operation greatly.
3. The utility model discloses a setting of three main cooling water set, two general one are reserve, improve the stability of system greatly, even break down also can in time supply continue the refrigeration, improve the fault-tolerant rate.
Drawings
FIG. 1 is a schematic view of the overall connection of the present invention;
FIG. 2 is an enlarged partial schematic view at A of FIG. 1;
FIG. 3 is an enlarged partial schematic view at B of FIG. 1;
FIG. 4 is an enlarged partial schematic view at C of FIG. 1;
fig. 5 is a partially enlarged schematic view at D of fig. 1.
Wherein the reference numerals are: 1. a main water chiller; 2. an auxiliary water chilling unit; 3. a water outlet main pipe; 4. a water separator; 5. a water collector; 6. a vacuum water outlet pipe; 7. a water outlet auxiliary pipe; 8. a return water secondary pipe; 9. a vacuum water return pipe; 10. a water collecting and discharging pipe; 11. a water return main pipe; 12. switching the tube; 13. a standby pipe; 14. a connecting pipe; 15. filtering with a screen; 16. a main chilled water circulating pump; 17. a water return main pipe; 18. an auxiliary chilled water circulating pump; 19. a freezing water tank; 20. a water replenishing booster pump; 21. a vacuum pump deep cooling system; 22. cooling equipment is used; 23. a differential pressure bypass valve; 24. a differential pressure bypass electric control valve; 25. chilled water replenishing surge tank.
Detailed Description
The present invention will be described in more detail with reference to the following examples.
As shown in fig. 1 to 5, the optimizing apparatus for a power station refrigeration system of this embodiment includes three main water chiller units 1, one auxiliary water chiller unit 2, a water separator 4 and a water collector 5, wherein water outlet ends of the three main water chiller units 1 are connected to an input end of the water separator 4 through a water outlet header 3, an output end of the water separator 4 is externally connected to a water inlet end of each cooling equipment 22, the water separator 4 is connected to a water inlet end of a vacuum pump deep cooling system 21 through a vacuum water outlet pipe 6, and the vacuum water outlet pipe 6 is provided with a valve V a (ii) a The input end of the water collector 5 is connected with the water outlet end of each cooling device 22, the input end of the water collector 5 is connected with the water outlet end of the vacuum pump deep cooling system 21 through the vacuum water return pipe 9, and the vacuum water return pipe 9 is provided with a valve V b The output end of the water collector 5 is connected with a water collecting and discharging pipe10, a water collecting and discharging pipe 10 is connected with a main chilled water circulating pump 16 through a water return main pipe 11, and the main chilled water circulating pump 16 is connected with the water inlet ends of the main water chilling units 1 through a water return main pipe 17;
the water outlet end of the auxiliary water chilling unit 2 is connected with the vacuum water outlet pipe 6 through an auxiliary water outlet pipe 7, the auxiliary water outlet pipe 7 is connected with the main water outlet pipe 3 through a switching pipe 12, and the switching pipe 12 is provided with a valve V c A valve V is arranged on the water outlet auxiliary pipe 7 e And a valve V e Is arranged between the connection part of the water outlet auxiliary pipe 7 and the vacuum water outlet pipe 6 and the connection part of the water outlet auxiliary pipe 7 and the switching pipe 12; the water inlet end of the auxiliary water chilling unit 2 is connected with a vacuum water return pipe 9 through a water return auxiliary pipe 8, the water return auxiliary pipe 8 is connected with a water collecting and discharging pipe 10 through a standby pipe 13, and a valve V is arranged on the standby pipe 13 d A valve V is arranged on the return water secondary pipe 8 f And a valve V f The device is arranged between the joint of the return water secondary pipe 8 and the vacuum return water pipe 9 and the joint of the return water secondary pipe 8 and the standby pipe 13, and the return water secondary pipe 8 is also provided with an auxiliary chilled water circulating pump 18.
Furthermore, a connecting pipe 14 is connected between the water outlet main pipe 3 and the water return main pipe 11, a pressure difference bypass valve 23 and a pressure difference bypass electric regulating valve 24 which are connected in parallel with each other are arranged on the connecting pipe 14, when the refrigerating demands of various users are reduced when the weather changes to cold or at night, the pressure difference bypass electric regulating valve 24 arranged on the connecting pipe 14 can be automatically opened and regulated to keep the flow between the water outlet main pipe 3 and the water return main pipe 11 constant, so that the working stability of the auxiliary chilled water circulating pump 18 and the main chilled water circulating pump 16 can be protected, the working condition of harmful equipment such as cavitation is not easy to occur, and the temporary manual regulation can be performed by manually opening the pressure difference bypass valve 23 under the extreme condition that the pressure difference bypass electric regulating valve 24 is damaged.
Furthermore, the backwater main pipe 11 is provided with two filter screens 15 which are connected in parallel for filtering impurities in the chilled water system, ensuring the cleanliness of each heat exchange system and improving the heat exchange efficiency.
Further, still be connected with moisturizing booster pump 20 on the return water is responsible for 11, moisturizing booster pump 20 is responsible for 11 tie point setting before filter screen 15 with the return water, and moisturizing booster pump 20 still is connected with refrigerated water moisturizing surge tank 25 and freezing water tank 19 respectively, and the external demineralized water of 19 input ends of freezing water tank increases water charging system through external demineralized water, realizes the constant voltage moisturizing, improves the stability of system.
Further, the two auxiliary chilled water circulating pumps 18 are arranged in parallel, one of the auxiliary chilled water circulating pumps 18 is used as a standby, and the stability of the system is improved.
The utility model discloses a theory of operation: according to the utility model discloses a setting of valve (see valve control table), can be defined as two operating modes with entire system's use:
the working condition I is as follows: under the condition that the vacuum pump deep cooling system 21 is used as an independent operation working condition, the auxiliary water chilling unit 2 is only used for cooling the vacuum pump deep cooling system 21, and the operating water temperature of the auxiliary water chilling unit 2 is 15/20 ℃; the three main water chilling units 1 are only used by an air conditioner, the designed operating water temperature is 7/12 ℃, the two main water chilling units 1 operate, and one main water chilling unit 1 is reserved; if the auxiliary water chilling unit 2 breaks down, the operation of the three main water chilling units 1 can be switched to supply air conditioners and the deep cooling system 21 of the vacuum pump for cooling, so that the operation safety of the system is ensured;
working conditions are as follows: under the working condition of combined operation, the auxiliary water chilling unit 2 and the two main water chilling units 1 are preferentially operated, the remaining main water chilling unit 1 is reserved, under the working condition, cold water return water of the vacuum pump deep cooling system 21 and air conditioner return water are converged into total return water in the water collector 5, the total return water respectively enters the main water chilling unit 1 and the auxiliary water chilling unit 2 after being boosted by the auxiliary chilled water circulating pump 18 and the main chilled water circulating pump 16 to be cooled respectively, then is converged to the water outlet main 3 and then enters the water separator 4, and then is respectively distributed to the vacuum pump deep cooling system 21 and the cold utilization equipment 22 (air conditioner user pipeline) to carry out heat exchange, and the working condition is used as a reserved working condition.
The valve control under each operating condition is shown in the following table:
| operating conditions | V a | V b | V c | V d | V e | V f |
| Working condition one | Closing device | 5% open | Closing device | Closing device | Opening device | Switch (C) |
| Working condition two | Opening device | 50% open | Opening device | Opening device | Closing device | Closing device |
Valve control meter
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Claims (5)
1. An optimization device of a power station refrigeration system is characterized in that: the water distributor comprises three main water chilling units (1), one auxiliary water chilling unit (2), a water distributor (4) and a water collector (5), wherein the water outlet ends of the three main water chilling units (1) are connected with the input end of the water distributor (4) through a water outlet header pipe (3), the output end of the water distributor (4) is externally connected with the water inlet end of each cooling device (22) and the water distributor (4) is connected with the water inlet end of a vacuum pump deep cooling system (21) through a vacuum water outlet pipe (6), and a valve V is arranged on the vacuum water outlet pipe (6) a (ii) a The input end of the water collector (5) is connected with the water outlet end of each cooling device (22), the input end of the water collector (5) is connected with the water outlet end of the vacuum pump deep cooling system (21) through a vacuum water return pipe (9), and a valve V is arranged on the vacuum water return pipe (9) b The output end of the water collector (5) is connected with a water collecting outlet pipe (10), the water collecting outlet pipe (10) is connected with a main chilled water circulating pump (16) through a water return main pipe (11), and the main chilled water circulating pump (16) is connected with the water inlet ends of the main water chilling units (1) through a water return main pipe (17); the water outlet end of the auxiliary water chilling unit (2) is connected with a vacuum water outlet pipe (6) through an auxiliary water outlet pipe (7)The water outlet auxiliary pipe (7) is connected with the water outlet main pipe (3) through a switching pipe (12), and a valve V is arranged on the switching pipe (12) c A valve V is arranged on the water outlet auxiliary pipe (7) e And a valve V e Is arranged between the connection part of the water outlet auxiliary pipe (7) and the vacuum water outlet pipe (6) and the connection part of the water outlet auxiliary pipe (7) and the switching pipe (12); the water inlet end of the auxiliary water chilling unit (2) is connected with a vacuum water return pipe (9) through a water return auxiliary pipe (8), the water return auxiliary pipe (8) is connected with a water collecting and discharging pipe (10) through a standby pipe (13), and a valve V is arranged on the standby pipe (13) d A valve V is arranged on the return water auxiliary pipe (8) f And a valve V f The device is arranged between the joint of the return auxiliary pipe (8) and the vacuum return pipe (9) and the joint of the return auxiliary pipe (8) and the standby pipe (13), and the return auxiliary pipe (8) is also provided with an auxiliary chilled water circulating pump (18).
2. The optimizing device for a power station refrigerating system according to claim 1, characterized in that: a connecting pipe (14) is connected between the water outlet main pipe (3) and the water return main pipe (11), and a differential pressure bypass valve (23) and a differential pressure bypass electric regulating valve (24) which are mutually connected in parallel are arranged on the connecting pipe (14).
3. The optimizing device for a power station refrigerating system according to claim 1, characterized in that: two filter screens (15) which are connected in parallel are arranged on the return main pipe (11).
4. The optimizing device for a power station refrigerating system according to claim 3, characterized in that: the water return main pipe (11) is connected with a water replenishing booster pump (20), the connecting point of the water replenishing booster pump (20) and the water return main pipe (11) is arranged in front of the filter screen (15), the water replenishing booster pump (20) is connected with a chilled water replenishing pressure stabilizing tank (25) and a freezing water tank (19) respectively, and the input end of the freezing water tank (19) is externally connected with demineralized water.
5. The optimizing device for a power station refrigerating system according to claim 1, characterized in that: two auxiliary chilled water circulating pumps (18) are arranged and are mutually connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123432502.6U CN217235909U (en) | 2021-12-31 | 2021-12-31 | Power station refrigerating system's optimizing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123432502.6U CN217235909U (en) | 2021-12-31 | 2021-12-31 | Power station refrigerating system's optimizing apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN217235909U true CN217235909U (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123432502.6U Active CN217235909U (en) | 2021-12-31 | 2021-12-31 | Power station refrigerating system's optimizing apparatus |
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| CN (1) | CN217235909U (en) |
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- 2021-12-31 CN CN202123432502.6U patent/CN217235909U/en active Active
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