Pipeline type steam filter screen with double-funnel structure

A double-funnel, pipeline technology, applied in the fields of filtration and separation, separation methods, chemical instruments and methods, etc., can solve the problem of high difficulty in screen inspection and disassembly, inability to meet the requirements of the filter screen structure, and inability to meet the flow area of ​​the filter screen, etc. problems, to achieve the effect of simplifying the external fixed structure, low cost, and strong structural applicability

Active Publication Date: 2013-08-28
浙江汽轮成套技术开发有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The characteristic of this kind of winding filter is that when it is used in small pipelines, its structure is relatively compact and its safety is high, and it is suitable for steam turbines above medium pressure; but if the pipeline is large in size, it is difficult to wind the corrugated steel belt. The middle part of the finished filter screen is easy to loose. Second, when the pipe specification is larger than DN350 pipe, the flow area of ​​the filter screen will not meet the

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  • Pipeline type steam filter screen with double-funnel structure
  • Pipeline type steam filter screen with double-funnel structure
  • Pipeline type steam filter screen with double-funnel structure

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following examples.

[0019] Such as figure 2 , image 3 As shown, the pipeline-type double-funnel steam filter screen of the present invention includes a funnel-shaped outer net 6 and an inner net 9 coaxially arranged; the diameter of the outer net gradually decreases from its bottom end to the top end, and its The bottom end is formed with a flange ring 5, and the mouth at the top is connected (welded together) to the top of the inner net; the inner net extends downward into the interior of the outer net (the length of the inner net is about 50 to 80 %, according to the actual needs to determine the length ratio of the inner net and the outer net), the diameter of the inner net gradually decreases from its top to the bottom.

[0020] The nozzle at the bottom of the inner net is provided with a fixed ring 12 (welded and...

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Abstract

The invention relates to a pipeline type steam filter screen with a double-funnel structure, which can guarantee the whole flow area and has the characteristics of being convenient to assemble and disassemble, simple in structure and low in cost. According to the technical scheme, the pipeline type steam filter screen is characterized by comprising a funnel-shaped outer net and a funnel-shaped inner net, wherein the diameter of the outer net is gradually reduced from the bottom end to the top; the bottom end of the outer net is provided with a flange ring, and a mouth part on the top of the outer net is connected with the top of the inner net; the inner net extends into the outer net downward; and the diameter of the inner net is gradually reduced from the top to the bottom end.

Description

technical field [0001] The invention relates to a steam filtering device, in particular to a steam turbine steam filter suitable for various low-pressure large pipelines. Background technique [0002] The impurities in steam come from the source of steam generation and the circulation process in the pipeline. Steam filter is a common device used to filter steam impurities. It is currently widely used in the field of steam turbines. It is used to protect steam turbine control valves, rotors, A necessary device for important components such as moving and stationary blades. [0003] The steam turbine is a high-efficiency, high-precision prime mover. Therefore, compared with conventional filters, in addition to considering the normal filtering function, it is relatively important to consider the pressure drop caused by the filter as much as possible. Therefore, a sufficient flow area must be ensured; in addition, when used in industrial steam turbines, due to variable operating...

Claims

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Application Information

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IPC IPC(8): B01D35/02
Inventor 吴林林杨晓平刘志杰杨雄民
Owner 浙江汽轮成套技术开发有限公司
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