Split metering valve

A metering valve and split-type technology, which is applied in the field of mechanical hydraulic control, can solve the problems of high matching requirements, low assembly efficiency, and difficult processing, and achieve the effects of reducing the difficulty of matching, improving assembly efficiency, and reducing the difficulty of machining

Active Publication Date: 2019-04-19
XIAN AERO ENGINE CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention: to provide a split metering valve to solve the problems of difficult processing, high matching requirements and low assembly efficiency in the prior art

Method used

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Embodiment Construction

[0017] The function of the metering valve in the prior art is command control and fuel metering, and consists of a valve 1 and a bushing 2 . The valve 1 is set in the bushing 2, the axial length of the valve 1 is 130mm, and the axial length of the bushing 2 is 105mm. The gap between valve 1 and bushing 2 is required to be 0.008-0.014mm. The valve 1 is provided with a servo fuel inlet hole 3, an orifice 5 and a servo oil passage 6, and the bush 2 is provided with a servo fuel inlet hole 4, which cooperate to realize the command control function.

[0018] The invention provides a split metering valve, which divides the valve 1 into two parts, the valve 1-1 and the valve 1-2. The division of the valve 1 follows two principles: first, it is divided according to the function of the valve 1; second, it is divided proportionally according to the axial length of the valve 1.

[0019] The valve 1 is divided into two parts at the servo fuel inlet hole 3, the valve 1-1 is used for comm...

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Abstract

The invention belongs to the technical field of mechanical hydraulic control, and relates to a split metering valve. The metering valve comprises a valve body (1) and a bush (2), and the bush (2) sleeves the valve body (1). A servo fuel oil inlet hole (3) and a servo fuel oil inlet hole (4) are formed in the valve body (1) and the bush (2) correspondingly. A throttling hole (5) and a servo oil path (6) are formed in the valve body (1). The split metering valve is characterized in that the valve body (1) and the bush (2) are split, the valve body (1) is divided into a valve (1-1) and a valve (1-2), and the valve body (1) is divided into two portions by the servo fuel oil inlet hole (3). The bush (2) is divided into an instruction control section (2-1) and a fuel oil metering section (2-2) according to a function section. The machining difficulty is reduced, the series connection manner is adopted for connection in the assembling process, all the portions can be aligned by themselves, the cooperation difficulty is reduced, and assembling efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical hydraulic control and relates to a split metering valve. Background technique [0002] In the current complex mechanical hydraulic control system, the metering valve generally has other functions besides metering. In order to realize the function integration of the metering valve, the measures of increasing the length of the valve and adding fluid channels are generally adopted. At present, a metering valve used as a supporting device is as follows: figure 1 As shown, it consists of a metering valve and a bushing. The axial length of the metering valve is 130mm, the axial length of the bushing is 105mm, and the clearance between the bushing and the valve is 0.008-0.014mm. The surface roughness of the parts is relatively high. At the same time, the metering valve The roundness of the valve should be less than or equal to 0.002mm. It can be seen from this example that due to the increase in the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C9/26F16K27/00F16K37/00
CPCF02C9/26F16K27/00F16K37/00
Inventor 米东旭姜晓峰吴玮王蓉蔡冰杨瑞
Owner XIAN AERO ENGINE CONTROLS
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