WO2021114378A1

WO2021114378A1 - Liquid-cooled pump station applicable in offshore wind power

Info

Publication number: WO2021114378A1
Application number: PCT/CN2019/127031
Authority: WO
Inventors: 吴安兵; 沈新月; 刘海玲; 沈欢
Original assignee: 广州高澜节能技术股份有限公司
Priority date: 2019-12-10
Filing date: 2019-12-20
Publication date: 2021-06-17
Also published as: CN211525107U

Abstract

Disclosed is a liquid-cooled pump station applicable in offshore wind power, comprising a pump station. The pump station comprises a shielded pump, an electric motor, and an expansion tank. The shielded pump is in communication with the expansion tank, the electric motor and the shielded pump are integrally mounted, and an exhaust pipe in communication with the expansion tank is provided on the electric motor, thus forming a circulating pipe. The shielded pump is screwed tightly and mounted on a base via a protection apparatus sleeved around the exterior. A support frame is provided extending upwards on the upper end of the base. The support frame is provided extending outwards with a fixing base used for placing the expansion tank, also, a wiring box is mounted on top of the support frame. Solved is the problem of short service life of the pump station in an offshore environment.

Description

A liquid-cooled pump station applied to offshore wind power

Technical field

The invention relates to the technical field of power electronic equipment, in particular to a liquid-cooled pump station applied to offshore wind power.

Background technique

Wind energy is a pollution-free, green and clean energy. The potential for wind energy utilization in China is huge. The total developable installed capacity of land and offshore wind energy reaches about 700 to 1.2 billion kW. China's wind resources are close to the United States, and greatly exceed India, Germany and Spain. With the reduction of onshore wind power resources, offshore wind power has become a new energy development trend in the future. Offshore wind energy is high-quality, stable airflow, and the rate of change in the four seasons is small. China is conducting detailed investigations on the development prospects of offshore wind power on the long coastline, but Onshore wind power liquid cooling technology faces problems such as poor corrosion resistance, long maintenance intervals, water pump leakage, frequent expansion tank failures, and high noise when used at sea, resulting in short service life, and offshore fans are exposed to high humidity and high salt spray for a long time. Under the environment, the internal machinery and electrical equipment are easily corroded, which affects the effect of operation.

Summary of the invention

In order to overcome the above-mentioned problems, the present invention provides a liquid-cooled pump station applied to offshore wind power, which solves the problem of short service life of the pump station in the offshore environment.

The technical solution adopted by the present invention to solve its technical problems is: the present invention provides a liquid-cooled pump station applied to offshore wind power, including a pump station, the pump station including a canned motor pump, a motor and an expansion tank, the canned motor pump Connected with the expansion tank pipeline, the motor and the canned motor pump are integrally installed, and the motor is also provided with an exhaust pipe communicating with the expansion tank to form a circulation pipeline. The canned motor pump passes through protective devices sheathed around the outside The bolts are fastened and installed on the base. The upper end of the base is provided with a support frame extending upward, and the support frame is extended outward with a fixing seat for placing the expansion tank, and a junction box is also installed on the top.

Preferably, an external cooling radiator and a heater are provided outside the pump station, and the external cooling radiator is connected with the heater pipeline, and the external cooling radiator is connected with the front pipeline of the pump station, and the heater is connected with the rear of the pump station. The end pipes are connected to form a circulation pipeline. The heat generated by the heater is dissipated into the air through the external cooling radiator to ensure the cooling efficiency of the equipment.

Preferably, a pressure monitor is provided between the pump station and the external cooling radiator and the heater respectively, and a temperature monitor is also provided between the pump station and the heater.

Preferably, the pump station is provided with two canned motor pumps, which are connected through a three-way check valve. The three-way check valve is also connected to the external cooling radiator and the expansion tank respectively. The three-way check valve is connected to the external cooling radiator and the expansion tank. There is also an ion treatment device between the expansion tanks. Two canned motor pumps are used to improve the usability of the equipment, and the three-way check valve is connected to ensure the reliability of the operation of a single canned motor pump and the switching of the water pump. At the same time, the ion treatment device is responsible for removing ions in the coolant and improving the coolant. Service life and corrosion resistance.

Preferably, the expansion tank is fixed on a clamping seat provided on the support frame by a clamp, and the bottom of the expansion tank is arranged against the fixing seat. Ensure the stability of the overall installation.

Compared with the prior art, the present invention has the beneficial effects that: the liquid-cooled pump station solves the problem of short service life of the pump station in the marine environment, and its motor and canned motor pump are installed integrally, avoiding the use of mechanically sealed pumps and magnetic Water leakage and poor exhaust caused by the pump, and the motor is also equipped with an exhaust pipe connected with the expansion tank to guide the exhaust gas of the canned motor pump to the expansion tank to avoid dry wear and cavitation of the canned motor pump bearing, and pass the external cooling The radiator dissipates the heat generated by the heater into the air to ensure the cooling efficiency of the equipment. Further, the pump station is equipped with two canned motor pumps, one for use and one for use, to improve the usability of the equipment, and are connected through a three-way check valve. The reliability of the operation of a single canned motor pump and the switching of the water pump is guaranteed, and the ion treatment device is responsible for removing ions in the coolant to improve the service life and corrosion resistance of the coolant.

Description of the drawings

The present invention will be further described below with reference to the drawings and embodiments.

Figure 1 is a schematic diagram of the axonometric structure of a liquid-cooled pump station applied to offshore wind power according to the present invention;

Fig. 2 is a schematic diagram of a liquid-cooled pump station applied to offshore wind power according to the present invention.

Description of the drawings: 1. Canned motor pump; 2. Motor; 3. Expansion tank; 4. Exhaust pipeline; 5. External cooling radiator; 6. Heater; 7. Pressure monitor; 8. Temperature monitor; 9. , Three-way check valve; 10, ion treatment device; 11, protective device; 12, base; 13, support frame; 14, fixed seat; 15, card seat; 16, junction box.

Detailed ways

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which merely illustrate the basic structure of the present invention in a schematic manner, so they only show the constitutions related to the present invention.

The specific implementation of the present invention is as follows: a liquid-cooled pumping station applied to offshore wind power as shown in Figure 1-2, including a pumping station, this liquid-cooled pumping station solves the problem of short service life of the pumping station in the offshore environment, The pump station includes canned motor pump 1, motor 2 and expansion tank 3. Canned motor pump 1 and expansion tank 3 are connected by pipelines, motor 2 and canned motor pump 1 are installed integrally to avoid water leakage and poor exhaust caused by mechanically sealed pumps and magnetic pumps Phenomenon, and the motor 2 is also provided with an exhaust pipe 4 communicating with the expansion tank 3, thereby forming a circulation pipeline. The exhaust pipe 4 leads the exhaust gas of the canned pump 1 to the expansion tank to avoid dry wear of the bearings of the canned pump 1 In addition to cavitation, the canned motor pump 1 adopts liquid cooling, which can reduce noise. The expansion tank 3 and canned motor pump 1 are made of 304 stainless steel or better to improve their corrosion resistance. An external cooling radiator is installed outside the pump station. 5 and heater 6, the external cooling radiator 5 is connected with the heater 6 pipeline, and the external cooling radiator 5 is connected with the front-end pipeline of the pumping station, and the heater 6 is connected with the back-end pipeline of the pumping station, thereby forming a circulation pipe Through the external cooling radiator 5, the heat generated by the heater 6 is dissipated into the air to ensure the cooling efficiency of the equipment. There are pressure monitors 7 and pumps between the pump station and the external cooling radiator 5 and the heater 6. There is also a temperature monitor 8 between the station and the heater 6, and two canned motor pumps 1 are provided on the pump station, and they are connected through a three-way check valve 9, which is also connected to the external cooling radiator respectively. 5 and the expansion tank 3 are connected, an ion treatment device 10 is also provided between the three-way check valve 9 and the expansion tank 3, and two canned motor pumps 1 are used to improve the usability of the equipment, and pass the three-way check valve 9 is connected to ensure the reliability of the operation of the single canned motor pump 1 and the switching of the water pump. At the same time, the ion treatment device 10 is responsible for removing ions in the coolant, improving the service life and anti-corrosion ability of the coolant.

The canned motor pump 1 is fastened to the base 12 by bolts with protective devices 11 sheathed on the outer periphery. The upper end of the base 12 is provided with a support frame 13 extending upward, and the support frame 13 is extended outward with a fixing seat 14 for placing the expansion tank 3 The expansion tank 3 is fixed on the holder 15 provided on the support frame 13 by a clamp, and the bottom of the expansion tank 3 is set against the fixing seat 14 to ensure the stability of the overall installation, and a junction box 16 is also installed on the top.

Taking the above-mentioned ideal embodiment according to the present invention as enlightenment, through the above-mentioned description content, relevant staff can make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the content of the description, and its technical scope must be determined according to the scope of the claims.

Claims

A liquid-cooled pump station applied to offshore wind power, characterized in that it comprises a pump station, the pump station includes a canned motor pump, a motor and an expansion tank, the canned motor pump is connected with the expansion tank pipeline, and the motor is integrated with the canned motor pump The motor is also equipped with an exhaust pipe connected with the expansion tank to form a circulation pipeline. The canned motor pump is fastened on the base through the protective device bolts sheathed around the outside, and the upper end of the base is upwards. A support frame is extended, the support frame extends outwardly with a fixing seat for placing the expansion tank, and a junction box is also installed on the top of the support frame.
The liquid-cooled pump station applied to offshore wind power according to claim 1, wherein an external cooling radiator and a heater are provided outside the pump station, and the external cooling radiator is connected with the heater pipeline. And the external cooling radiator is connected with the front-end pipeline of the pumping station, and the heater is connected with the back-end pipeline of the pumping station, thereby forming a circulation pipeline.
The liquid-cooled pump station applied to offshore wind power according to claim 2, characterized in that: pressure monitors are respectively provided between the pump station and the external cooling radiator and the heater, and the pump station is connected to the heat generator. There is also a temperature monitor between the devices.
The liquid-cooled pump station applied to offshore wind power according to claim 1, characterized in that: the pump station is provided with two canned motor pumps, which are connected through a three-way check valve, the three-way check valve It is also communicated with the external cooling radiator and the expansion tank respectively, and an ion treatment device is also provided between the three-way check valve and the expansion tank.
The liquid-cooled pump station applied to offshore wind power according to claim 1, characterized in that the expansion tank is fixed on a holder provided on the support frame by a clamp, and the bottom of the expansion tank is arranged against the fixing seat.