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Internal cooling ventilation system adopting full-air-cooling cooling mode for large synchronous phase regulator

A cooling method and internal cooling technology, applied in the direction of cooling/ventilation devices, electromechanical devices, magnetic circuit rotating parts, etc., can solve the problems of high operating cost, low failure rate, complex structure, etc., to improve cooling efficiency and effect, The effect of reducing the workload and the number of equipment

Inactive Publication Date: 2018-11-30
STATE GRID JIANGSU ELECTRIC POWER CO LTD MAINTENANCE BRANCH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of the large-scale synchronous condenser cooling system in the prior art, such as complex structure, cumbersome installation and operation, and high operating costs, the present invention proposes an internal cooling and ventilation system for large-scale synchronous condensers in an all-air cooling mode, with high cooling efficiency and low auxiliary equipment. less, easy to operate, low failure rate, easy maintenance

Method used

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  • Internal cooling ventilation system adopting full-air-cooling cooling mode for large synchronous phase regulator
  • Internal cooling ventilation system adopting full-air-cooling cooling mode for large synchronous phase regulator
  • Internal cooling ventilation system adopting full-air-cooling cooling mode for large synchronous phase regulator

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Embodiment 1

[0037] A large-scale synchronous condenser internal cooling and ventilation system with full air-cooling cooling mode of the present invention includes: an outer shell 1, and the outer shell 1 is provided with a first air duct 2, a cooling fan 3, and a water-air cooler 4 , stator 5 and rotor 6;

[0038] The first air channel 2 is arranged between the cooling fan 3 and the water-air cooler 4, and is used to introduce the wind in the cooling fan 3 into the water-air cooler 4, wherein the cooling fan 3 is arranged at the stator end The outside of the internal coil 501; the water-air cooler 4 is located between the cooling fan 3 and the stator 5;

[0039] Such as Figure 1-3 As shown, in a specific implementation of the embodiment of the present invention: the first air duct 2 includes a first baffle 201 and a second baffle 202; the first baffle 201 is arranged between the cooling fan 3 and the stator 5, used to separate the cooling fan 3 and the stator 5, one end of which is co...

Embodiment 2

[0051] Based on Example 1, such as Figure 4 As shown, in this embodiment, an air supply hole 12 is provided at the end winding of the rotor, and the air supply hole 12 communicates with the second air duct 10 .

[0052] Further, the end windings of the rotor 6 are designed with wide copper rows and double rows of holes. For details, see image 3 . The rotor winding adopts fine-drawn silver-containing copper wire to improve creep resistance.

[0053] All the other parts are the same as in Example 1.

Embodiment 3

[0055] Based on Embodiment 1 or 2, the number of the first air passage 2, the cooling fan 3, and the water-air cooler 4 are two, and they are arranged symmetrically outside the two ends of the rotor.

[0056] All the other parts are identical with embodiment 1 or embodiment 2.

[0057] In summary:

[0058] In the present invention, the circulating ventilation generated by the cooling fan first enters the water-air cooler for cooling, and then the cooled circulating ventilation is divided into two paths to cool the rotor and the stator respectively, which solves the problem of water-air cooling in the traditional cooling method. When the cold air from the cooler passes through the cooling fan, heat is generated due to factors such as turbulence, eddy current, and friction, which cause the actual ventilation to have a certain temperature difference before and after passing through the cooling fan, so that the ventilation itself that cools the heat-generating parts already has a ...

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Abstract

The invention discloses an internal cooling ventilation system adopting a full-air-cooling cooling mode for a large synchronous phase regulator. The internal cooling ventilation system comprises a shell; the shell is internally provided with first air channels, cooling fans, water-air coolers, a stator and a rotor; the first air channels are formed between the cooling fans and the water-air coolers and used for guiding air in the cooling fans into the water-air coolers; an air gap is formed between the stator and the rotor; an air outlet channel is formed in the stator and penetrates through the stator; rotor secondary grooves are formed in the outer side of the rotor is a surrounding mode, and second air channels are formed in the rotor secondary grooves; and an air outlet area is formedby the shell, the outer wall of the stator, and the outer walls of the first air channels jointly. The ventilation path of a traditional phase regulator is changed by changing the positions of the water-air coolers, the circulating air generated by the cooling fans firstly enters the water-air coolers to be cooled, then the air is cooled into two ways to be cooled, cooling is conducted in the closed full-air-cooling cooling mode, the cooling efficiency is high, the number of auxiliary machine equipment is small, operation is easy and convenient, the failure rate is low, and maintenance is convenient.

Description

technical field [0001] The invention belongs to the technical field of cooling and ventilation systems, and in particular relates to an internal cooling and ventilation system of a large-scale synchronous condenser in an all-air cooling mode. Background technique [0002] Synchronous condenser, also known as synchronous compensation machine, is a reactive power compensation device that operates in the state of a motor without mechanical load itself, and only absorbs a small amount of active power from the grid to feed the machine itself. It can provide or absorb reactive power to the grid, improve power factor, reduce network loss, and have a better effect on adjusting grid voltage and improving grid stability. [0003] Large synchronous condensers will generate energy loss during operation, including stator core and winding loss, friction loss between gas and rotor, and excitation loss, etc. This lost energy is converted to heat causing the temperature of the synchronous c...

Claims

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Application Information

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IPC IPC(8): H02K9/18H02K1/20H02K1/32
CPCH02K1/20H02K1/32H02K9/18
Inventor 汤晓峥李修金刘一丹王抗陈轩蒋梦瑶马宏忠赵帅
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD MAINTENANCE BRANCH
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