CN212079466U - Closed cooling water system of gas turbine - Google Patents
Closed cooling water system of gas turbine Download PDFInfo
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- CN212079466U CN212079466U CN202020451417.0U CN202020451417U CN212079466U CN 212079466 U CN212079466 U CN 212079466U CN 202020451417 U CN202020451417 U CN 202020451417U CN 212079466 U CN212079466 U CN 212079466U
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Abstract
This specification discloses a combustion engine closed cooling water system, the system includes: the cold water supply system comprises a cold water supply main pipe, a cold water return main pipe, a cold water booster pump set, a pressure regulating station inlet water pipe, a pressure regulating station return water pipe, a cooler, a raw water supply water pipe, a raw water return water pipe, a first manual door, a second manual door, a third manual door, a fourth manual door, a fifth manual door, a sixth manual door, an inlet door, an outlet door, an inspection door, a seventh manual door and an eighth manual door. The system is additionally provided with a pipeline from a cold water closing return main pipe to an inlet of a cold water pressurizing pump set, a pipeline from an outlet of the cold water pressurizing pump set to a cold water closing water supply main pipe, a cooler, a plurality of manual doors and a raw water supply return water pipe. Through system transformation, the closed cooling water system has two operation modes of a normal unit state and a shutdown state, so that the energy consumption of the closed cooling water system and the energy consumption of the circulating water system in the shutdown state of the unit are reduced, and the closed cooling water system and the circulating water system are convenient to shut down and overhaul.
Description
Technical Field
The utility model relates to a gas turbine technical field particularly, relates to a gas turbine closed cooling water system.
Background
As is well known, a power plant maintenance worker needs to maintain a power plant unit regularly to check the unit performance and ensure safe production. During the shutdown maintenance of the gas turbine group of the gas power plant, most of equipment stops closed cooling water supply, but a small amount of equipment such as an air compressor, a turbine lubricating oil and the like still needs cooling water to maintain long-time operation, so that a closed water and circulating water system cannot be shut down, a high-power water pump runs for a long time at a low load, unnecessary waste is generated, and the energy consumption level of a unit is high. Meanwhile, because the closed water and circulating water system needs to be maintained for a long time, system maintenance cannot be carried out in time, and the maintenance period and the maintenance quality cannot be effectively guaranteed. In the prior art, a small-sized closed cold water pump is mainly arranged, and closed cold water circulation is performed when a unit is stopped. The prior art has the problems that firstly, a new pump set needs to be purchased and installed, thereby increasing the expense; and secondly, circulating water is still used for cooling closed cold water, a circulating water system cannot be shut down, so that the energy consumption is high, and the circulating water system cannot be overhauled.
In conclusion, research on a closed cooling water system of a combustion engine enables a closed cooling water system and a circulating water system to be smoothly stopped for maintenance when a machine group is stopped for maintenance, and the problem to be solved urgently is solved.
SUMMERY OF THE UTILITY MODEL
The present description provides a closed cooling water system for a combustion engine to overcome at least one technical problem in the prior art.
According to an embodiment of the present specification, there is provided a closed cooling water system for a combustion engine, the system including: close the female pipe of cold water supply, close the female pipe of cold water return, close cold water booster pump package, pressure regulating station entry water pipe, pressure regulating station return water pipe, cooler, raw water supply water pipe, raw water return water pipe, first manual door, the manual door of second, the manual door of third, the manual door of fourth, fifth, the manual door of sixth, wherein:
the closed cold water supply main pipe is connected with an inlet of the closed cold water booster pump set through a pipeline, and the pipeline from the closed cold water supply main pipe to the closed cold water booster pump set is provided with the first manual door;
the closed cold water return main pipe is connected with an inlet of the closed cold water booster pump group through a pipeline, the fourth manual door and the fifth manual door are arranged on the pipeline from the closed cold water return main pipe to the closed cold water booster pump group in series, and the fifth manual door is positioned between the fourth manual door and the closed cold water booster pump group;
the outlet of the closed cold water booster pump group is connected with the inlet water pipe of the pressure regulating station, and the second manual door is arranged on the inlet water pipe of the pressure regulating station;
the outlet of the closed cold water booster pump group is connected with the closed cold water supply main pipe through a pipeline, and the cooler and the sixth manual door are sequentially arranged on the pipeline from the outlet of the closed cold water booster pump group to the closed cold water supply main pipe;
the cooler is connected with the raw water supply water pipe, and the cooler is connected with the raw water return water pipe;
the pressure regulating station backwater water pipe is communicated with the closed cold water backwater water pipe, and the third manual door is arranged in the pressure regulating station backwater water pipe.
Optionally, the closed-loop cold water booster pump group includes a first closed-loop cold water booster pump, a second closed-loop cold water booster pump and a third closed-loop cold water booster pump, and the first closed-loop cold water booster pump, the second closed-loop cold water booster pump and the third closed-loop cold water booster pump are arranged in parallel.
Optionally, an inlet door is provided in the conduit from the outlet of the chilled water booster pump group to the cooler inlet.
Optionally, an outlet door is provided in the conduit from the cooler outlet to the chilled water shut-off water supply mains.
Optionally, an inspection door is provided between the fourth manual door and the fifth manual door.
Optionally, a seventh manual door is provided in the conduit of the raw water supply water pipe to the cooler.
Optionally, an eighth manual door is provided in a pipe from the cooler to the raw water return water pipe.
The beneficial effects of the embodiment of the specification are as follows:
the embodiment of the specification provides a closed cooling water system of a gas turbine, and the system comprises a closed cold water supply main pipe, a closed cold water return main pipe, a closed cold water booster pump group, a pressure regulating station inlet water pipe, a pressure regulating station return water pipe, a cooler, a raw water supply water pipe, a raw water return water pipe, a first manual door, a second manual door, a third manual door, a fourth manual door, a fifth manual door, a sixth manual door, an inlet door, an outlet door, an inspection door, a seventh manual door and an eighth manual door. And during the operation of the unit, opening the first manual door, the second manual door and the third manual door, closing the fourth manual door, the fifth manual door, the sixth manual door, the inlet door, the outlet door, the inspection door, the seventh manual door and the eighth manual door, closing the cold water system to normally operate, and cooling water is supplied to the corresponding unit through a booster pump group, a pressure regulating station and cooling of circulating water. And during the shutdown maintenance of the unit, opening a fourth manual door, a fifth manual door, a sixth manual door, an entrance door, an exit door, a seventh manual door and an eighth manual door, and closing the first manual door, the second manual door, the third manual door and the inspection door, wherein the closed cold water system is in an energy-saving operation mode. The closed cold water booster pump group replaces a closed cold water pump to maintain the operation of a closed cold water system, and any two closed cold water booster pumps can be selected to maintain the operation of the closed cold water system, so that the closed cold water pump is stopped to be convenient for maintenance; the raw water and the cooler are used for replacing circulating water to cool the closed water, so that the circulating water system can be shut down, the energy consumption is reduced, the circulating water system is convenient to overhaul, and the embodiment of the specification has improvement on the improvement of the closed water system.
The innovation points of the embodiment of the specification comprise:
1. in the embodiment, a pipeline from a cold water closing return main pipe to an inlet of a cold water closing booster pump group, a pipeline from an outlet of the cold water closing booster pump group to a cold water closing supply main pipe, a cooler, a first manual door, a second manual door, a fourth manual door, a fifth manual door, a sixth manual door, an inlet door, an outlet door, an access door, a seventh manual door, an eighth manual door, a raw water supply water pipe and a raw water return water pipe are additionally arranged in the existing cold water closing system.
2. In the embodiment, during the shutdown period of the unit, the shutdown cold water booster pump is used for replacing the shutdown cold water pump to maintain the operation of the shutdown cold water system, so that the requirement of a small amount of equipment on the maintenance of the shutdown cold water system during the unit maintenance period is met, the energy consumption is effectively reduced, furthermore, the shutdown cold water pump can be stopped and maintained in advance, the efficiency of maintenance work is improved, the existing equipment is used, the cost of system transformation is greatly saved, and the method is one of the innovation points of the embodiment of the specification.
3. In the embodiment, the small cooler is additionally arranged during the shutdown period of the unit, and raw water is used as a cold source, so that the circulating water system can be shut down in advance, the circulating water system can be conveniently shut down in time for maintenance, higher energy consumption caused by continuous operation of the circulating water system is avoided, and the service cost of the unit during maintenance is reduced, which is one of the innovation points of the embodiment of the specification.
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 closed cooling water system of a combustion engine according to an embodiment of the present disclosure;
in FIG. 1, 102-shut off cold water supply mains; 104-closing a cold water return main pipe; 106-close cold water booster pump group; 108-inlet water pipe of pressure regulating station; 110-a pressure regulating station backwater water pipe; 112-a cooler; 114-raw water supply water pipe; 116-raw water return water pipe; 118-a first manual door; 120-a second manual door; 122-a third manual door; 124-a fourth manual door; 126-fifth manual door; 128-a sixth manual door; 130-an exit door; 132-an entry door; 134-a check gate; 136-seventh manual door; 138-eighth manual door.
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 closed cooling water system of a combustion engine. The details will be described below.
Fig. 1 is a schematic structural diagram of a closed cooling water system of a combustion engine according to an embodiment of the present disclosure. As shown in fig. 1, the system includes: a cold water closing supply main pipe 102, a cold water closing return main pipe 104, a cold water closing booster pump group 106, a pressure regulating station inlet water pipe 108, a pressure regulating station return water pipe 110, a cooler 112, a raw water supply water pipe 114, a raw water return water pipe 116, a first manual door 118, a second manual door 120, a third manual door 122, a fourth manual door 124, a fifth manual door 126 and a sixth manual door 128, wherein: the closed cold water supply main pipe 102 is connected with an inlet of the closed cold water booster pump group 106 through a pipeline, and the pipeline from the closed cold water supply main pipe 102 to the closed cold water booster pump group 106 is provided with the first manual door 118.
The closed cold water return main pipe 104 is connected with an inlet of the closed cold water booster pump group 106 through a pipeline, the fourth manual door 124 and the fifth manual door 126 are arranged in series on the pipeline from the closed cold water return main pipe 104 to the closed cold water booster pump group 106, and the fifth manual door 126 is located between the fourth manual door 124 and the closed cold water booster pump group 106.
The outlet of the closed cold water booster pump group 106 is connected with the inlet water pipe 108 of the pressure regulating station, and the second manual door 120 is arranged on the inlet water pipe 108 of the pressure regulating station.
The outlet of the closed cold water booster pump group 106 is connected with the closed cold water supply main pipe 102 through a pipeline, and the cooler 112 and the sixth manual door 128 are sequentially arranged on the pipeline from the outlet of the closed cold water booster pump group 106 to the closed cold water supply main pipe 102.
The cooler 112 is connected with the raw water supply water pipe 114, and the cooler 112 is connected with the raw water return water pipe 116.
The pressure regulating station return water pipe 110 is communicated with the closed cold water return water pipe 104, and the third manual door 122 is arranged in the pressure regulating station return water pipe 110.
In a specific embodiment, the closed cold water booster pump group 106 includes a first closed cold water booster pump, a second closed cold water booster pump and a third closed cold water booster pump, the first closed cold water booster pump, the second closed cold water booster pump and the third closed cold water booster pump are arranged in parallel, and the three closed cold water booster pumps are mutually standby.
In one embodiment, an inlet door 132 is provided in the piping from the outlet of the chilled water booster pump group 106 to the inlet of the chiller 112.
In one embodiment, an outlet door 130 is provided in the conduit from the cooler 112 outlet to the chilled water supply header 102.
In one embodiment, an inspection door 134 is disposed between the fourth manual door 124 and the fifth manual door 126. The check door 134 is used as a check means for checking whether the cold water shut-off water supply main pipe 102 leaks water into the cold water shut-off water return main pipe 104 during the normal operation of the unit.
In one embodiment, a seventh manual door 136 is provided in the pipe from the raw water supply pipe 114 to the cooler 112.
In a specific embodiment, an eighth manual door 138 is provided in the conduit from the cooler 112 to the raw water return water pipe 116.
Based on the structure of the system, the closed type cold water system has two operation modes under a normal state and a shutdown state. During the operation of the unit, the first manual door 118, the second manual door 120 and the third manual door 122 are opened, the fourth manual door 124, the fifth manual door 126, the sixth manual door 128, the inlet door 132, the outlet door 130, the inspection door 134, the seventh manual door 136 and the eighth manual door 138 are closed, the cold water system is closed to operate normally, and the cooling water is supplied to the corresponding unit through the booster pump group, the pressure regulating station and the cooling of the circulating water. During the unit outage for service, the fourth manual door 124, the fifth manual door 126, the sixth manual door 128, the entrance door 132, the exit door 130, the seventh manual door 136, and the eighth manual door 138 are opened, and the first manual door 118, the second manual door 120, the third manual door 122, and the inspection door 134 are closed, while the closed cold water system is in the energy saving operation mode. The closed cold water booster pump group 106 replaces a closed cold water pump to maintain the operation of the closed cold water system, and any two closed cold water booster pumps can be selected to maintain the operation of the closed cold water system, so that the closed cold water pump is stopped for maintenance. The raw water and the cooler 112 replace circulating water to cool closed cooling water, so that the circulating water system can be shut down, the energy consumption is reduced, and the circulating water system is convenient to overhaul.
In one specific implementation mode, a closed cold water booster pump with power of 90KW/H is used for replacing a closed cold water pump with power of 630KW/H, a raw water cooling mode is used for replacing a circulating water cooling mode with daily average energy consumption of 520KW/H, the power consumption cost of a preset unit time is 0.5 yuan according to 15 days of shutdown, and the estimated cost saving is predicted as follows:
the cost generated by using raw water is removed, the cost can be saved by more than 10 ten thousand yuan, and the method has obvious effect on reducing energy consumption and cost during shutdown maintenance.
To sum up, the cooling water system is closed to a gas turbine that this description embodiment provided, through closing the cooling water system and installing pipeline, manual door etc. and cooler and raw water supply return water pipe additional, make and close the cooling water system and have two kinds of operational modes under normal load and shut down the low-load, when shutting down the maintenance, utilize and close the cooling water booster pump package and replace and close the cooling water pump and maintain the demand of a small amount of equipment to the cooling water when shutting down, adopt cooler and raw water to replace the circulating water and do the cooling for closing cold water, under the condition that does not increase the pump package, low-cost completion system transformation has solved and has closed cooling water system and unable shutdown maintenance of circulating water system when shutting down the maintenance, thereby influence the maintenance progress and produce the problem of great energy consumption.
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 (7)
1. A closed cooling water system for a combustion engine, comprising: close the female pipe of cold water supply, close the female pipe of cold water return, close cold water booster pump package, pressure regulating station entry water pipe, pressure regulating station return water pipe, cooler, raw water supply water pipe, raw water return water pipe, first manual door, the manual door of second, the manual door of third, the manual door of fourth, fifth, the manual door of sixth, wherein:
the closed cold water supply main pipe is connected with an inlet of the closed cold water booster pump set through a pipeline, and the pipeline from the closed cold water supply main pipe to the closed cold water booster pump set is provided with the first manual door;
the closed cold water return main pipe is connected with an inlet of the closed cold water booster pump group through a pipeline, the fourth manual door and the fifth manual door are arranged on the pipeline from the closed cold water return main pipe to the closed cold water booster pump group in series, and the fifth manual door is positioned between the fourth manual door and the closed cold water booster pump group;
the outlet of the closed cold water booster pump group is connected with the inlet water pipe of the pressure regulating station, and the second manual door is arranged on the inlet water pipe of the pressure regulating station;
the outlet of the closed cold water booster pump group is connected with the closed cold water supply main pipe through a pipeline, and the cooler and the sixth manual door are sequentially arranged on the pipeline from the outlet of the closed cold water booster pump group to the closed cold water supply main pipe;
the cooler is connected with the raw water supply water pipe, and the cooler is connected with the raw water return water pipe;
the pressure regulating station backwater water pipe is communicated with the closed cold water backwater water pipe, and the third manual door is arranged in the pressure regulating station backwater water pipe.
2. The system of claim 1, wherein the chilled water shut down booster pump set comprises a first chilled water shut down booster pump, a second chilled water shut down booster pump, and a third chilled water shut down booster pump, the first chilled water shut down booster pump, the second chilled water shut down booster pump, and the third chilled water shut down booster pump being arranged in parallel.
3. The system of claim 1, wherein an inlet door is provided in the piping from the outlet of the chilled water booster pump group to the cooler inlet.
4. The system of claim 1, wherein an outlet door is provided in the conduit from the cooler outlet to the chilled water shut-off water supply header.
5. The system of claim 1, wherein an inspection door is disposed between the fourth manual door and the fifth manual door.
6. The system of claim 1, wherein a seventh manual door is provided in the conduit of the raw water supply water pipe to the cooler.
7. The system of claim 1, wherein an eighth manual door is provided in the conduit from the cooler to the raw water return water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020451417.0U CN212079466U (en) | 2020-03-31 | 2020-03-31 | Closed cooling water system of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020451417.0U CN212079466U (en) | 2020-03-31 | 2020-03-31 | Closed cooling water system of gas turbine |
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| Publication Number | Publication Date |
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| CN212079466U true CN212079466U (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020451417.0U Active CN212079466U (en) | 2020-03-31 | 2020-03-31 | Closed cooling water system of gas turbine |
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| CN (1) | CN212079466U (en) |
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- 2020-03-31 CN CN202020451417.0U patent/CN212079466U/en active Active
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