a pressure regulator
A technology for pressure regulators and bellows components, which is applied in safety valves, engine components, balance valves, etc., and can solve problems that affect the working sensitivity of products, small diaphragm strokes, and small adjustable margins for working flow.
Active Publication Date: 2017-03-01
SHANGHAI AEROSPACE SYST ENG INST
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Problems solved by technology
[0003] Existing pressure regulators mostly use pistons or diaphragms with O-rings as pressure-sensing and sealing components. Since the O-rings are mostly made of rubber, the friction of the O-rings is relatively large, which affects the performance of the entire product to a certain extent. Working sensitivity; while the stroke of the diaphragm itself is small, resulting in a small adjustable margin of the entire working flow
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[0013] The invention will be described in more detail hereinafter with reference to the accompanying drawings showing embodiments of the invention. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are presented so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0014] figure 1 Shown is a structural schematic diagram of a high-precision pressure regulator of the present invention, the pressure regulator includes: bellows assembly 1, valve assembly 2, nozzle 3, valve core 4, valve body 5, nozzle 6, O rubber ring 7. Nut 8, lower spring seat 9, sleeve 10, spring 11, upper spring seat 12, adjusting screw 13, retaining ring 14, gasket 15, sealing element 16, pressure plate 17, nozzle 18, washer 19, nut 20 . The inlet of the pressure regulator is connected to the pressurized gas of t...
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The invention discloses a high-precision pressure adjuster. The high-precision pressure adjuster comprises a film box component, a valve component, a pipe connecting nozzle, a valve core, a valve body, a pipe connecting nozzle, an O rubber gasket, a nut, a lower spring base, a sleeve, a spring, an upper spring base, an adjusting screw, a retainer ring, a washer, a fluorine plastic ring, a pressure plate, a pipe connecting nozzle, a washer and a nut, wherein an inlet of the pressure adjuster is connected with gas cylinder boosting gas, and an outlet is connected with a storage tank boosting pipeline. The high-precision pressure adjuster is characterized in that a feedback cavity is formed in the valve body; a storage tank gas pillow pressure is used as a feedback signal for adjusting the openness of a throttling port; and the inlet of the pressure adjuster and the feedback cavity are in sealing connection through the fluorine plastic ring. The high-precision pressure adjuster overcomes the problems of low adjusting sensitivity and smaller adjusting margin of a working flow in a traditional pressure adjuster in the prior art, and largely improves the adjusting precision of the pressure adjuster.
Description
technical field [0001] The invention relates to a pressure regulator, in particular to a high-precision pressure regulator for a pressurized gas path of a liquid propellant tank of an aerospace vehicle. Background technique [0002] In the field of aerospace vehicles, existing pressure regulators use the outlet pressure as a feedback signal to adjust the opening of the orifice, control the outlet pressure, and indirectly control the pressurized pressure of the storage tank through the outlet pressure. [0003] Existing pressure regulators mostly use pistons or diaphragms with O-rings as pressure-sensing and sealing components. Since the O-rings are mostly made of rubber, the friction of the O-rings is relatively large, which affects the performance of the entire product to a certain extent. Working sensitivity; while the stroke of the diaphragm itself is small, resulting in a small adjustable margin of the entire working flow. Contents of the invention [0004] The primar...
Claims
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IPC IPC(8): F16K17/06
CPCF16K17/06
Inventor 臧辉滕浩郭志海张亮李翔石玉鹏
Owner SHANGHAI AEROSPACE SYST ENG INST