Non-return device of fan outlet and fan with non-return device

A technology of check device and fan, which is applied to components of pumping devices for elastic fluids, machines/engines, mechanical equipment, etc., which can solve the problem of reducing circulation efficiency, small circulation area, and failure to meet the flow resistance and flow rate of ventilation systems The demand and other issues to achieve the effect of protecting the non-return and ensuring the air supply volume

Pending Publication Date: 2021-11-23
HUANENG SHANDONG SHIDAO BAY NUCLEAR POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the fan operation in the prior art, as the outlet air volume of the fan changes, the opening of the outlet check valve will also change, and the opening will decrease when the air volume is small. Due to the small flow area, t

Method used

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  • Non-return device of fan outlet and fan with non-return device
  • Non-return device of fan outlet and fan with non-return device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] Return means provided in this embodiment of the fan outlet 1, as figure 1 Shown, comprising: a sealing assembly 2; 2 of the sealing assembly mounted in the outlet position of the fan 1; in particular, the sealing assembly 2 comprises a housing 3, a plurality of parallel blades provided rotatably disposed within the housing 34 , when the blade 4 is provided in contact, to achieve the blocking of the fan outlet 1, the protective functions return function of the fan 1; 4 rotor blades, so that the voids between the adjacent blades 4 separation, is fed to the wind turbine 1.

[0038] Rotor blade drive mechanism 4 through a transmission control structure 9; driving structure 1 and the fan 8 are connected to a control system; 1 started when the fan, the control system 8 receives the signal after a fan activated, sends a signal to the drive mechanism, the driving structure to drive the blade 4 is opened, the normal supply air; when the fan control system 8 receiv...

Example Embodiment

[0045] Example 2

[0046] An electric machine provided in this embodiment comprises a back-backing device of the fan outlet of Example 1.

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PUM

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Abstract

The invention provides a non-return device of a fan outlet and a fan with the non-return device, and belongs to the technical field of fans. The non-return device of the fan outlet comprises a non-return assembly, a blade set, a driving structure and a control system, wherein the non-return assembly is installed at the outlet position of the fan, the blade set is used for blocking the fan outlet, the driving structure is connected with the blade set of the non-return assembly through a transmission structure, and the control system is connected with the driving structure and the fan. According to the non-return device of the fan outlet, the change of the air volume does not need to be considered, the non-return assembly can be fully opened as long as the fan is electrified and started, a constant flow resistance system in a pipeline of the fan is guaranteed, and the air supply amount is guaranteed.

Description

technical field [0001] The invention relates to the technical field of fans, in particular to a non-return device for fan outlets and a fan with the same. Background technique [0002] The fan is a mechanical device for conveying gas; [0003] A nuclear power plant refers to a facility that converts nuclear energy into electrical energy through appropriate devices. Nuclear power plants use nuclear reactors instead of boilers in thermal power plants, and use nuclear fuel to generate heat in a special form of "combustion" in nuclear reactors, turning nuclear energy into thermal energy to heat water and generate steam. [0004] The pipeline design of nuclear power plants is complex, and the pipeline specifications are various. Generally, mechanical check valves are installed at the outlet of the fan. The specifications vary accordingly, but the requirements for the flow resistance of the valves are basically the same (ξ≤1). [0005] When the fan is running, as the air volume ...

Claims

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Application Information

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IPC IPC(8): F04D29/40
CPCF04D29/403
Inventor 张亚朴于帆黄建利张喜林刘从敏何凯
Owner HUANENG SHANDONG SHIDAO BAY NUCLEAR POWER CO LTD
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