CN205247229U

CN205247229U - Device of gaseous decompression of pulsewidth modulation

Info

Publication number: CN205247229U
Application number: CN201521107103.4U
Authority: CN
Inventors: 苟仲武
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-28
Filing date: 2015-12-28
Publication date: 2016-05-18
Anticipated expiration: 2025-12-28

Abstract

The utility model discloses a device of gaseous decompression of pulsewidth modulation. It includes high -pressurepipe, automatically controlled pneumatic valve, gas holder, low air pipe, pressure sensor and automatically controlled ware, and the gas holder top is provided with pressure sensor, and pressure sensor will open valve signal transfer to automatically controlled pneumatic valve with pressure sensing signal transfer to automatically controlled ware, automatically controlled ware, and high -pressurepipe links to each other with the gas holder through automatically controlled pneumatic valve, and the gas holder still links to each other with low air pipe. The utility model discloses an automatically controlled technique of digit through PWM pulse width control high pressure pneumatic valve break -make, has higher sensitivity to output ressure measurement, great accommodation, and pressure is nimble to be set for, within the fluctuation range little 3%.

Description

A kind of device of pulsewidth modulation gas decompression

Technical field

The utility model relates to decompression technology field, is specifically related to a kind of device of pulsewidth modulation gas decompression.

Background technology

Gas pressure reducer belongs to mechanical type and opens and closes, and relies on air inlet and gas outlet pressure reduction to reach certain value and could open and close the work of internal regulation air valve later, and the pressure reducer of each model can only be applicable to certain pressure limit. Exist range of regulation narrow, pressure maintains low precision, and fluctuation reaches more than 10%. And in actual industrial production, need a kind of decompressor of more high-precision controlled pressure, and can improve and regulate the speed.

Summary of the invention

Because the above-mentioned defect of prior art, the utility model provides a kind of device of pulsewidth modulation gas decompression, adopt digital electronic control technology to measure output pressure, by PWM pulse-width controlled High-pressure air valve break-make, there is higher sensitivity, larger accommodation, pressure is set flexibly, in fluctuation range little 3%.

For achieving the above object, the utility model provides a kind of device of pulsewidth modulation gas decompression, comprise high-pressure air pipe, electric control valve, air accumulator, low pressure gas pipe, pressure sensor and electric controller, air accumulator top is provided with pressure sensor, pressure sensor signal is sent to electric controller by pressure sensor, valve opening signal is sent to electric control valve by electric controller, and high-pressure air pipe is connected with air accumulator by electric control valve, and air accumulator is also connected with low pressure gas pipe.

The utility model is that gases at high pressure (0.1-60MPa) are delivered to electric control valve cut-off from high-pressure air pipe, if the pressure in air accumulator does not reach setting value, by pressure signal collection, and force value is sent to electric controller, electric controller is according to pressure changing, reduce amplitude and trend and export the break-make of the pulse control signal control electric control valve of 1Hz-100Hz dutycycle 0%-100% per second, realize when gases at high pressure are passed in air accumulator, in the time that force value reaches desired value, electric control valve maintains aperture and passes in air accumulator, it is for subsequent use that air accumulator is externally exported gas by low pressure gas pipe.

The utility model adopts pressure sensor is experienced output pressure and is changed, and changes pulse-width controlled magnetic valve make-up gas according to pressure, maintains output pressure stable.

The beneficial effects of the utility model: adopt Digital Electronic Technique to measure output pressure, by PWM pulse-width controlled High-pressure air valve break-make, there is higher sensitivity, larger accommodation, pressure is set flexibly, in fluctuation range little 3%.

Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is described further, to understand fully the purpose of this utility model, feature and effect.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Detailed description of the invention

With reference to Fig. 1, this detailed description of the invention is by the following technical solutions: a kind of device of pulsewidth modulation gas decompression, comprise high-pressure air pipe 1, electric control valve 2, air accumulator 3, low pressure gas pipe 4, pressure sensor 5 and electric controller 7, air accumulator 3 tops are provided with pressure sensor 5, pressure sensor signal 6 is sent to electric controller 7 by pressure sensor 5, valve opening signal 8 is sent to electric control valve 2 by electric controller 7, and high-pressure air pipe 1 is connected with air accumulator 3 by electric control valve 2, and air accumulator 3 is also connected with low pressure gas pipe 4.

When the utility model uses, gases at high pressure (0.1-60MPa) are delivered to electric control valve 2 from high-pressure air pipe to be ended, pressure (0.1-60MPa) in air accumulator 3 is not if reach setting value, by pressure signal collection, and force value is sent to electric controller, electric controller is according to pressure changing, reduce amplitude and trend and export the break-make of the pulse control signal control electric control valve of 1Hz-100Hz dutycycle 0%-100% per second, realize when gases at high pressure are passed in air accumulator, in the time that force value reaches desired value, electric control valve maintains aperture and passes in air accumulator, it is for subsequent use that air accumulator is externally exported gas by low pressure gas pipe.

The electric controller set target pressure of this detailed description of the invention can adopt numeral or analog form, controller adopts computer, Programmable Logic Controller, analog and digital circuit, can be for compressible fluid (gas), in air accumulator, retain a small amount of gas as buffer medium after, also can reduce pressure for incompressible fluid; The algorithm of controlling High-pressure air valve is varied.

More than describe preferred embodiment of the present utility model in detail. Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work. Therefore, all technical staff in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in by the determined protection domain of claims.

Claims

1. the device of a pulsewidth modulation gas decompression, it is characterized in that, comprise high-pressure air pipe (1), electric control valve (2), air accumulator (3), low pressure gas pipe (4), pressure sensor (5) and electric controller (7), air accumulator (3) top is provided with pressure sensor (5), pressure sensor signal (6) is sent to electric controller (7) by pressure sensor (5), valve opening signal (8) is sent to electric control valve (2) by electric controller (7), high-pressure air pipe (1) is connected with air accumulator (3) by electric control valve (2), air accumulator (3) is also connected with low pressure gas pipe (4).