CN214900201U - Circulating water system liquid accuse non return butterfly valve electrical power generating system - Google Patents
Circulating water system liquid accuse non return butterfly valve electrical power generating system Download PDFInfo
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- CN214900201U CN214900201U CN202121185620.9U CN202121185620U CN214900201U CN 214900201 U CN214900201 U CN 214900201U CN 202121185620 U CN202121185620 U CN 202121185620U CN 214900201 U CN214900201 U CN 214900201U
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Abstract
The embodiment of the utility model provides a circulating water system hydraulic control check butterfly valve power system, wherein a #3 winter circulating water pump hydraulic control check butterfly valve power supply and a control power supply and a #3 summer circulating water pump hydraulic control check butterfly valve power supply and a control power supply are respectively connected to a circulating water working section A; the #4 winter circulating water pump hydraulic control check butterfly valve power supply and the control power supply and the #4 summer circulating water pump hydraulic control check butterfly valve power supply and the control power supply are respectively connected to a circulating water working section B; the auxiliary power supply is respectively connected with a #3 winter circulating water pump hydraulic control check butterfly valve, a #3 summer circulating water pump hydraulic control check butterfly valve, a #4 winter circulating water pump hydraulic control check butterfly valve and a #4 summer circulating water pump hydraulic control check butterfly valve to supply power for the #3 winter and summer circulating water pump hydraulic control check butterfly valve and the #4 winter and summer circulating water pump hydraulic control check butterfly valve. The utility model discloses circulating water pump export liquid accuse non return butterfly valve power hydraulic system normally links under the assurance accident situation, improves circulating water system security and reliability.
Description
Technical Field
The utility model relates to a electrical power generating system technical field particularly, relates to a circulating water system liquid accuse non return butterfly valve electrical power generating system.
Background
At present, a gas-steam combined cycle two-driving-one machine group is composed of two gas turbine units and a steam turbine unit, the two gas turbines are respectively provided with a high-voltage station transformer, when the two gas turbines normally operate, the two gas turbine units are respectively provided with a 6KV working bus of each unit, the steam turbine units do not have the high-voltage station transformer and the 6KV bus, and a public system does not have a high-voltage public transformer. Wherein, the power supply of the circulating water pump in winter and summer is respectively taken from A, B sections of 6KV buses of the corresponding gas turbine units. When the gas turbine set trips in a high-rise accident, the 6KV high-voltage bus of the set loses power due to the accident, a circulating pump of a circulating water system trips at low voltage, a hydraulic control check butterfly valve at the outlet of a tripping circulating water pump cannot be closed due to abnormal power supply configuration, and an outlet hydraulic control check butterfly valve of a standby circulating water pump cannot be reliably connected due to abnormal power supply configuration after the standby circulating water pump is started, so that the water supply of the circulating water system is interrupted or the water supply pressure is low, and the vacuum low-tripping accident of the set is caused.
Disclosure of Invention
The present description provides a hydraulic control check butterfly valve power supply system of a circulating water system, which is used for overcoming at least one technical problem in the prior art.
According to this specification embodiment, a circulating water system liquid accuse check butterfly valve electrical power generating system is provided, circulating water system liquid accuse check butterfly valve electrical power generating system includes: a #3 winter circulating water pump hydraulic control check butterfly valve power supply, a #3 winter circulating water pump hydraulic control check butterfly valve control power supply, a #3 summer circulating water pump hydraulic control check butterfly valve power supply, a #4 winter circulating water pump hydraulic control check butterfly valve control power supply, a #4 summer circulating water pump hydraulic control check butterfly valve control power supply and an auxiliary power supply;
the #3 winter circulating water pump hydraulic control check butterfly valve power supply and the #3 winter circulating water pump hydraulic control check butterfly valve control power supply power for the #3 winter circulating water pump hydraulic control check butterfly valve; the #3 summer circulating water pump hydraulic control check butterfly valve power supply and the #3 summer circulating water pump hydraulic control check butterfly valve control power supply power for the #3 summer circulating water pump hydraulic control check butterfly valve; the #3 winter circulating water pump hydraulic control check butterfly valve power supply, #3 winter circulating water pump hydraulic control check butterfly valve control power supply, #3 summer circulating water pump hydraulic control check butterfly valve power supply, and #3 summer circulating water pump hydraulic control check butterfly valve control power supply are respectively connected to a circulating water working section A; the circulating water working section A is connected with a circulating water # 1 low-pressure station transformer; the circulating water # 1 low-voltage station transformer is connected to a 6KV working A section of a #9 combustion engine through a first current transformer; the 6KV working A section of the #9 combustion engine is connected with a #3 summer circulating water pump;
the #4 winter circulating water pump hydraulic control check butterfly valve power supply and the #4 winter circulating water pump hydraulic control check butterfly valve control power supply power for the #4 winter circulating water pump hydraulic control check butterfly valve; the #4 summer circulating water pump hydraulic control check butterfly valve power supply and the #4 summer circulating water pump hydraulic control check butterfly valve control power supply power for the #4 summer circulating water pump hydraulic control check butterfly valve; the #4 winter circulating water pump hydraulic control check butterfly valve power supply, the #4 winter circulating water pump hydraulic control check butterfly valve control power supply, the #4 summer circulating water pump hydraulic control check butterfly valve power supply and the #4 summer circulating water pump hydraulic control check butterfly valve control power supply are respectively connected to a circulating water working section B; the section B of the circulating water work is connected with a circulating water # 2 low-voltage station transformer; the circulating water # 2 low-voltage station transformer is connected to the 6KV working A section of the #10 combustion engine through a second current transformer; the 6KV working section A of the #10 gas turbine is connected with a #4 summer circulating water pump;
the auxiliary power supply is respectively connected with the #3 winter circulating water pump hydraulic control check butterfly valve, the #3 summer circulating water pump hydraulic control check butterfly valve, the #4 winter circulating water pump hydraulic control check butterfly valve and the #4 summer circulating water pump hydraulic control check butterfly valve and supplies power for the #3 winter circulating water pump hydraulic control check butterfly valve, the #3 summer circulating water pump hydraulic control check butterfly valve, the #4 winter circulating water pump hydraulic control check butterfly valve and the #4 summer circulating water pump hydraulic control check butterfly valve.
Preferably, the auxiliary power supply is a 110V dc system power supply or a 220V UPS system power supply.
Preferably, the #3 summer circulating water pump is connected to the #9 combustion engine 6KV working A section through a first switch.
Preferably, the first current transformer is connected to the 6KV working section a of the #9 combustion engine through a second switch.
Preferably, the #4 summer circulating water pump is connected to the #10 combustion engine 6KV working A section through a third switch.
Preferably, the second current transformer is connected to the section A of the #10 combustion engine for 6KV operation through a fourth switch.
Preferably, the section A of the circulating water work is connected with the section B of the circulating water work through a fifth switch.
Preferably, the circulating water # 1 low-pressure plant transformer is connected to the circulating water working a section through a sixth switch.
Preferably, the circulating water # 2 low-voltage plant transformer is connected to the circulating water working section B through a seventh switch.
Preferably, the #3 winter circulating water pump hydraulic control check butterfly valve, the #3 summer circulating water pump hydraulic control check butterfly valve, the #4 winter circulating water pump hydraulic control check butterfly valve and the #4 summer circulating water pump hydraulic control check butterfly valve are all energy storage type hydraulic control check butterfly valves.
The beneficial effects of the embodiment of the specification are as follows:
the mode of power supply secondary system configuration is adopted, the primary loop of the power supply system adopts unit system configuration, when the plant power system of the unit operates normally, the circulating water pump and the upper-level power supply of the outlet hydraulic control butterfly valve of the circulating water pump are both from the same unit high plant transformer, the 110V direct current system power supply or the 220VUPS system power supply is additionally arranged on the power supply of the circulating water pump outlet hydraulic control check butterfly valve secondary loop control system, the condition that the circulating water pump outlet hydraulic control check butterfly valve control power supply is not powered off under the accident condition is ensured, and the energy accumulator power hydraulic system can operate correctly is ensured. By utilizing the characteristics of the energy storage type hydraulic control check butterfly valve, the power hydraulic system of the circulating water pump outlet hydraulic control check butterfly valve can be correctly linked under the accident condition, the unsafe risk caused by abnormal power supply configuration of the hydraulic control check butterfly valve in the prior art is solved, and the safety and the reliability of the circulating water system are improved.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power supply system of a hydraulic control check butterfly valve of a circulating water system according to an embodiment of the present disclosure;
description of reference numerals: 1 is a circulating water # 1 low-voltage station transformer, 2 is a first current transformer, 3 is a circulating water # 2 low-voltage station transformer, 4 is a second current transformer, 5 is a first switch, 6 is a second switch, 7 is a third switch, 8 is a fourth switch, 9 is a fifth switch, 10 is a sixth switch, and 11 is a seventh switch.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
It should be noted that the terms "including" and "having" and any variations thereof in the embodiments of the present specification and the drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the specification discloses a circulating water system liquid accuse non return butterfly valve electrical power generating system. Fig. 1 shows a power supply system of a hydraulic control check butterfly valve of a circulating water system according to an embodiment of the description. The following is a detailed description of each of the embodiments shown in FIG. 1.
In the embodiment of the present specification, it relates to a #3 winter circulating water pump hydraulic control check butterfly valve, a #3 summer circulating water pump hydraulic control check butterfly valve, a #4 winter circulating water pump hydraulic control check butterfly valve, and a #4 summer circulating water pump hydraulic control check butterfly valve, and the circulating water pump hydraulic control check butterfly valves are preferably energy storage type hydraulic control check butterfly valves.
The embodiment of the specification selects the energy storage type hydraulic control check butterfly valve, has the functions of a buffer gate valve and a check valve, can be opened and closed slowly in stages in the starting process of the circulating water pump according to a preset program, is closed and closed slowly in stages in the stopping process of the circulating water pump, avoids damage to the circulating water pipe due to overlarge water impact at the moment of starting/stopping the circulating water pump, and serves as the check valve during the stopping process of the circulating water pump to prevent circulating water in the pipeline from flowing backwards to cause short circuit of a cooling water system. The hydraulic energy stored in the energy accumulator is a main power source, the energy stored in the energy accumulator is enough for opening and closing a valve for a complete working stroke every time the hydraulic oil pump operates once, and the opening/closing of the valve is controlled by the start/stop interlocking of a corresponding circulating pump of the DCS distributed control system of the unit.
This circulating water system liquid accuse check butterfly valve electrical power generating system includes: a #3 winter circulating water pump hydraulic control check butterfly valve power supply, a #3 winter circulating water pump hydraulic control check butterfly valve control power supply, a #3 summer circulating water pump hydraulic control check butterfly valve power supply, a #4 winter circulating water pump hydraulic control check butterfly valve control power supply, a #4 summer circulating water pump hydraulic control check butterfly valve control power supply and an auxiliary power supply. Wherein, a #3 winter circulating water pump hydraulic control check butterfly valve power supply, a #3 winter circulating water pump hydraulic control check butterfly valve control power supply, a #3 summer circulating water pump hydraulic control check butterfly valve power supply, a #4 winter circulating water pump hydraulic control check butterfly valve power supply, a #4 summer circulating water pump hydraulic control check butterfly valve control power supply is a circulating water pump outlet hydraulic control check butterfly valve power supply primary loop, a unit system configuration mode is adopted, when a unit plant power system normally operates, the circulating water pump and the outlet hydraulic control check butterfly valve upper-level power supply thereof are both from the same unit high plant transformer, and an auxiliary power supply is additionally arranged on a circulating water pump outlet hydraulic control check butterfly valve secondary loop control system power module, therefore, the characteristics of the energy storage type hydraulic control check butterfly valve can be utilized, the power hydraulic system of the circulating water pump outlet hydraulic control check butterfly valve can be correctly linked under the accident condition, and the problems that in the prior art, after the circulating water pump is normally linked up and started up due to the fact that the power is lost due to the change of a higher-level plant, the outlet hydraulic control check butterfly valve of the standby circulating water pump cannot be reliably linked up due to abnormal power configuration, and the water supply of the circulating water system is interrupted or the water supply pressure is low to cause the vacuum low tripping accident of the unit due to the fact that the outlet hydraulic control check butterfly valve of the tripping circulating water pump cannot be linked up due to the abnormal power configuration are solved.
Specifically, a #3 winter circulating water pump hydraulic control check butterfly valve power supply, and a #3 winter circulating water pump hydraulic control check butterfly valve control power supply supplies power for a #3 winter circulating water pump hydraulic control check butterfly valve; a #3 summer circulating water pump hydraulic control check butterfly valve power supply, and a #3 summer circulating water pump hydraulic control check butterfly valve control power supply supplies power for a #3 summer circulating water pump hydraulic control check butterfly valve; a #3 winter circulating water pump hydraulic control check butterfly valve power supply, a #3 winter circulating water pump hydraulic control check butterfly valve control power supply, a #3 summer circulating water pump hydraulic control check butterfly valve power supply, and a #3 summer circulating water pump hydraulic control check butterfly valve control power supply are respectively connected to a circulating water working section A; the section A of the circulating water work is connected with a circulating water # 1 low-voltage station transformer 1; the circulating water # 1 low-voltage station transformer 1 is connected to a 6KV working A section of a #9 combustion engine through a first current transformer 2; and the 6KV working A section of the #9 combustion engine is connected with a #3 summer circulating water pump. The #3 winter circulating water pump hydraulic control check butterfly valve, the #3 summer circulating water pump hydraulic control check butterfly valve are from the A section of the #9 combustion engine 6KV working bus, the #3 summer circulating water pump power is also from the A section of the #9 combustion engine 6KV working bus, and the #3 winter circulating water pump power is also from the B section of the #9 combustion engine 6KV working bus, so that the #3 winter and summer circulating water pump and the outlet hydraulic control check butterfly valve are from the #9 high plant transformer.
A #4 winter circulating water pump hydraulic control check butterfly valve power supply, and a #4 winter circulating water pump hydraulic control check butterfly valve control power supply supplies power for a #4 winter circulating water pump hydraulic control check butterfly valve; a #4 summer circulating water pump hydraulic control check butterfly valve power supply, and a #4 summer circulating water pump hydraulic control check butterfly valve control power supply supplies power for a #4 summer circulating water pump hydraulic control check butterfly valve; a #4 winter circulating water pump hydraulic control check butterfly valve power supply, a #4 winter circulating water pump hydraulic control check butterfly valve control power supply, a #4 summer circulating water pump hydraulic control check butterfly valve power supply and a #4 summer circulating water pump hydraulic control check butterfly valve control power supply are respectively connected to a circulating water working section B; the section B of the circulating water work is connected with a circulating water # 2 low-voltage station transformer 3; the circulating water # 2 low-voltage station transformer 3 is connected to the #10 combustion engine 6KV working A section through a second current transformer 4; and the 6KV working A section of the #10 combustion engine is connected with a #4 summer circulating water pump. A #4 winter circulating water pump hydraulic control check butterfly valve, a #4 summer circulating water pump hydraulic control check butterfly valve are provided with a superior power supply from an A section of a #10 combustion engine 6KV working bus, a #4 summer circulating water pump power supply is also provided with an A section of a #10 combustion engine 6KV working bus, and a #4 winter circulating water pump power supply is provided with a B section of a #10 combustion engine 6KV working bus, so that the #4 winter and summer circulating water pump and the superior power supply of the #4 winter and summer outlet hydraulic control check butterfly valve are provided with the superior power supply from a #10 combustion engine high plant transformer.
The auxiliary power supply is respectively connected with a #3 winter circulating water pump hydraulic control check butterfly valve, a #3 summer circulating water pump hydraulic control check butterfly valve, a #4 winter circulating water pump hydraulic control check butterfly valve, a #4 summer circulating water pump hydraulic control check butterfly valve, and the auxiliary power supply is added in a circulating water pump outlet hydraulic control check butterfly valve secondary loop control system power supply module, so that the auxiliary power supply can be used for supplying power to the #3 winter circulating water pump hydraulic control check butterfly valve, the #3 summer circulating water pump hydraulic control check butterfly valve, the #4 winter circulating water pump hydraulic control check butterfly valve and the #4 summer circulating water pump hydraulic control check butterfly valve, the characteristics of the energy storage type hydraulic control check butterfly valve can be utilized, the circulating water pump outlet hydraulic control check butterfly valve power system can be correctly linked under the accident condition, and the safety and the reliability of the circulating water system can be improved. Preferably, the auxiliary power supply is a 110V dc system power supply or a 220V UPS system power supply.
Further, in order to control the connection or disconnection of the circuit, the power supply system of the hydraulic control check butterfly valve of the circulating water system in the embodiment of the specification is provided with a plurality of switches. In detail, the #3 summer circulating water pump is connected to the #9 combustion engine 6KV working A section through a first switch 5; the first current transformer 2 is connected to a 6KV working A section of a #9 combustion engine through a second switch 6; the #4 summer circulating water pump is connected to the #10 combustion engine 6KV working A section through a third switch 7; the second current transformer 4 is connected to the 6KV working A section of the #10 combustion engine through a fourth switch 8; the section A of the circulating water work is connected with the section B of the circulating water work through a fifth switch 9; the circulating water # 1 low-voltage station transformer 1 is connected to a circulating water working section A through a sixth switch 10; the circulating water # 2 low-voltage station transformer 3 is connected to the circulating water working section B through a seventh switch 11.
In addition, a #3 winter circulating water pump hydraulic control check butterfly valve power supply, a #3 winter circulating water pump hydraulic control check butterfly valve control power supply, a #3 summer circulating water pump hydraulic control check butterfly valve control power supply and a circulating water working section A are respectively provided with a switch, and similarly, a #4 winter circulating water pump hydraulic control check butterfly valve power supply, a #4 winter circulating water pump hydraulic control check butterfly valve control power supply, a #4 summer circulating water pump hydraulic control check butterfly valve control power supply and a circulating water working section B are respectively provided with a switch for respectively controlling.
In summary, the present specification discloses a hydraulic control check butterfly valve power supply system for a circulating water system, which adopts a power supply secondary system configuration mode, wherein a primary loop of the power supply system adopts a unit system configuration, when a plant power system of a unit operates normally, a circulating water pump and an upper power supply of an outlet hydraulic control check butterfly valve of the circulating water pump both come from the same unit high plant transformer, a 110V direct current system power supply or a 220VUPS system power supply is added to a power supply of a secondary loop control system of the circulating water pump outlet hydraulic control check butterfly valve, so that the power hydraulic system of the circulating water pump outlet hydraulic control check butterfly valve can operate correctly under the condition of an accident, the unsafe risk caused by the abnormal configuration of the hydraulic control check butterfly valve power supply in the prior art is solved, and the safety and the reliability of the circulating water system are improved.
Those of ordinary skill in the art will understand that: the figures are schematic representations of one embodiment, and the blocks or processes in the figures are not necessarily required to practice the present invention.
Those of ordinary skill in the art will understand that: modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be located in one or more devices different from the embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (10)
1. The utility model provides a circulating water system liquid accuse check butterfly valve electrical power generating system which characterized in that, circulating water system liquid accuse check butterfly valve electrical power generating system includes: a #3 winter circulating water pump hydraulic control check butterfly valve power supply, a #3 winter circulating water pump hydraulic control check butterfly valve control power supply, a #3 summer circulating water pump hydraulic control check butterfly valve power supply, a #4 winter circulating water pump hydraulic control check butterfly valve control power supply, a #4 summer circulating water pump hydraulic control check butterfly valve control power supply and an auxiliary power supply;
the #3 winter circulating water pump hydraulic control check butterfly valve power supply and the #3 winter circulating water pump hydraulic control check butterfly valve control power supply power for the #3 winter circulating water pump hydraulic control check butterfly valve; the #3 summer circulating water pump hydraulic control check butterfly valve power supply and the #3 summer circulating water pump hydraulic control check butterfly valve control power supply power for the #3 summer circulating water pump hydraulic control check butterfly valve; the #3 winter circulating water pump hydraulic control check butterfly valve power supply, #3 winter circulating water pump hydraulic control check butterfly valve control power supply, #3 summer circulating water pump hydraulic control check butterfly valve power supply, and #3 summer circulating water pump hydraulic control check butterfly valve control power supply are respectively connected to a circulating water working section A; the circulating water working section A is connected with a circulating water #1 low-pressure station transformer; the circulating water #1 low-voltage station transformer is connected to a 6KV working A section of a #9 combustion engine through a first current transformer; the 6KV working A section of the #9 combustion engine is connected with a #3 summer circulating water pump;
the #4 winter circulating water pump hydraulic control check butterfly valve power supply and the #4 winter circulating water pump hydraulic control check butterfly valve control power supply power for the #4 winter circulating water pump hydraulic control check butterfly valve; the #4 summer circulating water pump hydraulic control check butterfly valve power supply and the #4 summer circulating water pump hydraulic control check butterfly valve control power supply power for the #4 summer circulating water pump hydraulic control check butterfly valve; the #4 winter circulating water pump hydraulic control check butterfly valve power supply, the #4 winter circulating water pump hydraulic control check butterfly valve control power supply, the #4 summer circulating water pump hydraulic control check butterfly valve power supply and the #4 summer circulating water pump hydraulic control check butterfly valve control power supply are respectively connected to a circulating water working section B; the section B of the circulating water work is connected with a circulating water #2 low-voltage station transformer; the circulating water #2 low-voltage station transformer is connected to the 6KV working A section of the #10 combustion engine through a second current transformer; the 6KV working section A of the #10 gas turbine is connected with a #4 summer circulating water pump;
the auxiliary power supply is respectively connected with the #3 winter circulating water pump hydraulic control check butterfly valve, the #3 summer circulating water pump hydraulic control check butterfly valve, the #4 winter circulating water pump hydraulic control check butterfly valve and the #4 summer circulating water pump hydraulic control check butterfly valve and supplies power for the #3 winter circulating water pump hydraulic control check butterfly valve, the #3 summer circulating water pump hydraulic control check butterfly valve, the #4 winter circulating water pump hydraulic control check butterfly valve and the #4 summer circulating water pump hydraulic control check butterfly valve.
2. The hydraulic control check butterfly valve power supply system of circulating water system of claim 1, wherein the auxiliary power supply is a 110V dc system power supply or a 220V UPS system power supply.
3. The hydraulic control check butterfly valve power system of the circulating water system as claimed in claim 1, wherein the #3 summer circulating water pump is connected to the #9 combustion engine 6KV working A section through a first switch.
4. The circulating water system hydraulic control check butterfly valve electrical power generating system of claim 1, wherein the first current transformer is connected to the #9 combustion engine 6KV working A section through a second switch.
5. The hydraulic control check butterfly valve power supply system of a circulating water system as claimed in claim 1, wherein the #4 summer circulating water pump is connected to the #10 combustion engine 6KV working A section through a third switch.
6. The hydraulic control check butterfly valve power system of circulating water system of claim 1, wherein the second current transformer is connected to the #10 combustion engine 6KV operation a section through a fourth switch.
7. The hydraulic control check butterfly valve power supply system of the circulating water system according to claim 1, wherein the circulating water working section A is connected with the circulating water working section B through a fifth switch.
8. The hydraulic control check butterfly valve power supply system of circulating water system according to claim 1, wherein the circulating water #1 low-pressure service transformer is connected to the circulating water working a section through a sixth switch.
9. The hydraulic control check butterfly valve power supply system of circulating water system of claim 1, wherein the circulating water #2 low-pressure service transformer is connected to the circulating water working B section through a seventh switch.
10. The power supply system of claim 1, wherein the #3 winter circulating water pump hydraulic control check butterfly valve, the #3 summer circulating water pump hydraulic control check butterfly valve, the #4 winter circulating water pump hydraulic control check butterfly valve, and the #4 summer circulating water pump hydraulic control check butterfly valve are all energy storage type hydraulic control check butterfly valves.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121185620.9U CN214900201U (en) | 2021-05-31 | 2021-05-31 | Circulating water system liquid accuse non return butterfly valve electrical power generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121185620.9U CN214900201U (en) | 2021-05-31 | 2021-05-31 | Circulating water system liquid accuse non return butterfly valve electrical power generating system |
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| CN214900201U true CN214900201U (en) | 2021-11-26 |
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| CN202121185620.9U Active CN214900201U (en) | 2021-05-31 | 2021-05-31 | Circulating water system liquid accuse non return butterfly valve electrical power generating system |
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| CN (1) | CN214900201U (en) |
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2021
- 2021-05-31 CN CN202121185620.9U patent/CN214900201U/en active Active
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