Water pump cooling water supply system

Abstract

The utility model discloses a water pump cooling water supply system, and relates to the technical field of combined cycle unit feed pump cooling water supply. The water pump cooling water supply system comprises a main power house, an EH oil cooler and an open type water system are arranged in the main power house, a water supply port and a water return port of the open type water system are communicated with outlet pipes respectively, and the outlet pipes are communicated with an inlet and an outlet of the corresponding EH oil cooler. The EH oil cooler is cooled by open water, industrial water does not influence safe and stable operation of the unit any more, although the output of condensed water and open water is increased, and the risk of pump intertripping is increased, the condensed water and the open water are relatively stable and are essential auxiliary machines during operation of the unit, and the overall risk of the unit is not changed once abnormity occurs. And the influence of many and wide industrial water users and unstable water consumption on the unit is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of the cooling water supply of the feed water pump of a combined cycle unit, and specifically relates to a cooling water supply system for a water pump. Background Art

[0002] A combined gas cycle unit is an efficient and clean power generation method. It combines the advantages of a gas turbine and a steam turbine to achieve efficient energy utilization and environmental protection emissions. This kind of generator set mainly consists of three parts: a gas turbine, a waste heat boiler and a steam turbine, forming a complete energy utilization system.

[0003] The industrial water system provides essential cooling water for the combined gas cycle unit, which is very important. Generally, there are two industrial water pumps. One is in use and the other is in standby during normal operation. Once an abnormality occurs and the associated start fails, it will directly cause the high-pressure feed water pump to trip. If the rescue is not timely, it will trigger a major accident of the whole plant's generator set tripping. The interruption of industrial water will also cause the EH oil system to overheat and affect the properties of the EH pressure oil. Therefore, how to quickly handle the abnormality of the industrial water pump has become a difficult problem in the operation work.

[0004] Industrial water not only needs to provide cooling water for the boiler high-pressure feed water pump, low-pressure recirculation pump, boiler feed water pump, and EH oil, but also needs to supply chemical raw water treatment and dosing, as well as make-up water for the cooling water system of the refrigeration station. There are many and wide industrial water users, and the water use is unstable. If not paid attention to, it will easily cause insufficient or interrupted industrial water, and the safety and reliability of the unit are low. Content of the Utility Model

[0005] Technical Problem to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a cooling water supply system for a water pump, which solves the problem of unstable industrial water use.

[0007] Technical Solution

[0008] To achieve the above object, the utility model is realized through the following technical solutions: A cooling water supply system for a water pump includes a main plant building, in which an EH oil cooler and an open water system are arranged. The water supply port and the water return port of the open water system are respectively connected with a lead-out pipe, and the lead-out pipe is connected with the inlet and outlet of the corresponding EH oil cooler. In the main plant building, a condensate system and a comprehensive water pump house are arranged. The outlet of the condensate system is connected with the inlet of the boiler feed water pump house, and the comprehensive water pump house is connected with the gas boiler house, the chemical water treatment workshop and the refrigeration station.

[0009] Preferably, a high-pressure feed water pump and a low-pressure circulation pump are arranged in the boiler feed water pump house, and the condensate system is connected with the corresponding high-pressure feed water pump and low-pressure circulation pump.

[0010] Preferably, a comprehensive water suction well, industrial water pumps and chemical water pumps are arranged inside the comprehensive water pump house, and the comprehensive water pump house is connected to the industrial water pumps and chemical water pumps.

[0011] Preferably, the outlet header pipe of the chemical water pump is connected to the outlet header pipe of the industrial water pump.

[0012] Preferably, the comprehensive water pump house is communicated with the water purification equipment.

[0013] Preferably, a flow meter is installed on the pipeline between the condensate water system and the boiler feed water pump house.

[0014] Advantageous Effects

[0015] The utility model provides a water supply system for cooling water of water pumps. It has the following advantageous effects:

[0016] Through the arranged open water system and condensate water system, the gland seal of the boiler high-pressure feed water pump is cooled by condensate water, and the EH oil cooler is cooled by open water. Industrial water will no longer affect the safe and stable operation of the unit. Although the output of condensate water and open water is increased, and the risk of pump trip is increased, both are relatively stable during the operation of the unit and are essential auxiliary machines. Once abnormal, the overall risk to the unit remains unchanged, but the influence of a large number of industrial water users and unstable water use on the unit is eliminated. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the main plant building of the utility model;

[0019] Figure 3 It is a schematic structural diagram of the open water of the utility model;

[0020] Figure 4 It is a schematic diagram of the internal structure of the boiler feed water pump house of the utility model;

[0021] Figure 5 It is a schematic diagram of the internal structure of the comprehensive water pump house of the utility model. Specific Embodiments

[0022] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-5, the present utility model provides a technical solution: a water supply system for the cooling water of a water pump, including a main plant building, in which an EH oil cooler and an open water system are provided. The water supply port and the water return port of the open water system are respectively connected with lead-out pipes, and the lead-out pipes are connected with the inlets and outlets of the corresponding EH oil coolers. A condensate water system and a comprehensive water pump house are arranged in the main plant building. The outlet of the condensate water system is connected with the inlet of the boiler feed water pump house, and the comprehensive water pump house is connected with a gas boiler room, a chemical water treatment workshop and a refrigeration station. A connecting pipe is added to the outlet of the condensate water pump to the inlet pipe of the seal cooling water of the feed water pump, and the outlet pipe is led to a low-pressure steam drum. The low-pressure steam drum is a cylindrical pressure vessel, which is mainly used in boiler equipment for steam-water separation and water supply to the circulation loop, which is the prior art and will not be elaborated here.

[0024] During operation, the open water system cools the EH oil cooler, the condensate water system cools the boiler feed water pump house, and the comprehensive water pump house transports water to the gas boiler room, the chemical water treatment workshop and the refrigeration station.

[0025] Please refer to Figures 1-5 , the present utility model provides a technical solution: a high-pressure feed water pump and a low-pressure circulation pump are arranged in the boiler feed water pump house, and the condensate water system is connected with the corresponding high-pressure feed water pump and low-pressure circulation pump.

[0026] During operation, the condensate water system transports water to the high-pressure feed water pump and the low-pressure circulation pump in the boiler feed water pump house.

[0027] Please refer to Figures 1-5 , the present utility model provides a technical solution: a comprehensive water suction well, an industrial water pump and a chemical water pump are arranged inside the comprehensive water pump house, and the comprehensive water pump house is connected with the industrial water pump and the chemical water pump.

[0028] During operation, the industrial water pump and the chemical water pump transport the water in the comprehensive water suction well to the gas boiler room, the chemical water treatment workshop and the refrigeration station.

[0029] Please refer to Figures 1-5 , the present utility model provides a technical solution: the outlet header of the chemical water pump is connected to the outlet header of the industrial water pump.

[0030] During operation, by connecting the outlet header of the chemical water pump to the outlet header of the industrial water pump, the industrial water and the chemical water are integrated, improving the water replenishment of the cooling water system of the refrigeration station and the potential of chemical water treatment, creating conditions for subsequent upgrading and transformation.

[0031] Please refer to Figures 1-5 , the present utility model provides a technical solution: the comprehensive water pump house is connected with a water purification device.

[0032] During operation, through the setting of the water purification device, the water output from the comprehensive water pump house can be purified to remove impurities in the water, which is beneficial to the subsequent use of the water.

[0033] Please refer to Figures 1-5 , the present utility model provides a technical solution: a flow meter is installed on the pipeline between the condensate water system and the boiler feed water pump house.

[0034] During operation, through the setting of the flow meter, the flow rate of the pipeline between the condensate water system and the boiler feed water pump house can be measured.

[0035] In summary, the open water system cools the EH oil cooler, the condensate water system cools the boiler feed water pump house, the industrial water pump and the chemical water pump transport the water in the comprehensive water suction well to the gas boiler house, the chemical water treatment workshop and the refrigeration station, and the water output from the comprehensive pump house undergoes a water purification operation to remove impurities in the water, which is beneficial for the subsequent transportation of the water to the gas boiler house, the chemical water treatment workshop and the refrigeration station for use.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A water pump cooling water supply system, including a main plant, characterized in that: The main plant building is provided with an EH oil cooler and an open water system. The water supply port and the return port of the open water system are respectively connected with lead-out pipes, and the lead-out pipes are connected with the corresponding inlet and outlet of the EH oil cooler. The main plant building is provided with a condensate water system and an integrated water pump room. The outlet of the condensate water system is connected with the inlet of the furnace feed water pump room, and the integrated water pump room is connected with the gas boiler room, the chemical water treatment workshop and the refrigeration station.

2. A water pump cooling water supply system according to claim 1, characterized in that: The furnace feed water pump room is provided with a high-pressure feed water pump and a low-pressure circulation pump, and the condensate water system is connected with the corresponding high-pressure feed water pump and low-pressure circulation pump.

3. A water pump cooling water supply system according to claim 1, characterized in that: A comprehensive water suction well, an industrial water pump and a chemical water pump are arranged inside the comprehensive water pump room, and the comprehensive water pump room is connected with the industrial water pump and the chemical water pump.

4. A water pump cooling water supply system according to claim 3, characterized in that: The chemical water pump outlet main pipe is connected to the industrial water pump outlet main pipe.

5. A water pump cooling water supply system according to claim 1, characterized in that: The comprehensive water pump room is connected with the water purification equipment.

6. A water pump cooling water supply system according to claim 1, characterized in that: A flow meter is installed on the pipeline between the condensate system and the boiler feed water pump room.

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