CN201391662Y - Sensing-type reducing valve - Google Patents

Abstract

The utility model provides a sensing-type reducing valve, and relates to the technical field of reducing valves. The reducing valve comprises a valve body, a high-pressure air intake small hole, and a piston, wherein a cone is arranged in the central position at the top of the piston; the bottom diameter of the cone is larger than the pore diameter of the high-pressure air intake small hole; the top end of the cone can extend into the high-pressure air intake small hole; a spring is connected at the bottom of the piston; and an air pressure sensor is arranged in the valve body. The sensing-type reducing valve can stabilize and adjust the flow rate of input air, so as to enable the output flow rate to be stable and reliable; and the sensing-type reducing valve also can adjust the lowest air intake pressure of a high-pressure cavity and monitor the air pressure in the valve body, thereby enhancing the operational security.

Description

The sensing type reduction valve

Technical field

The utility model relates to reduction valve.

Background technique

Gas pressure reducer is the throttling by open-shut device, and inlet gas pressure is reduced to the outlet pressure of a certain needs, and makes outlet pressure keep stable equipment.It is connected use with gas cylinder, at first pressurized gas are delivered to decompressor, and high pressure air reducing to the low-pressure gas of required force value, is controlled its gas output flow again.

Existing gas pressure reducer comprises valve body, is provided with the high pressure admission aperture in the valve body, opens and closes the high pressure admission aperture by piston, and gas has just entered low-pressure cavity after the high pressure admission aperture comes out.During use, when the pressurized gas promotion piston of turning right, piston is opened in a flash, and the flow area of high pressure admission aperture just increases severely to maximum, and it is maximum that flow also reaches.After low-pressure cavity reaches certain pressure, piston is pushed to the left side, close the valve port of high pressure admission aperture, at this moment flow reaches minimum.Such structure causes the instability of flow by the input of high pressure admission aperture, causes the instability of flow of output.

The model utility content

In order to address the above problem, the utility model provides a kind of sensing type reduction valve, this sensing type reduction valve can stable regulation for the gas flow of input, and then make output flow reliable and stable, and can regulate the minimum suction pressure of hyperbaric chamber, and can monitor the interior gas pressure of valve body, increase operating security.

The utility model adopts following technological scheme, a kind of sensing type reduction valve, comprise valve body, high pressure admission aperture, piston, the top center position of described piston is provided with a cone, the footpath, the end of cone is greater than the high pressure admission small aperture, described cone top can be stretched in the high pressure admission aperture, and the bottom of piston is connected with spring, is provided with baroceptor in the valve body.

The beneficial effects of the utility model are, owing to adopt said structure, this reduction valve can stable regulation for the gas flow of input, and then make output flow reliable and stable, and can regulate the minimum suction pressure of hyperbaric chamber, and can monitor the gas pressure in the valve body, increase operating security.

Description of drawings

Fig. 1 is the structural representation of sensing type reduction valve of the present utility model.

Embodiment

As shown in Figure 1, a kind of sensing type reduction valve, comprise valve body 1, high pressure admission aperture 2, piston 3, the top center position of described piston 3 is provided with a cone 4, the footpath, the end of cone 4 is greater than high pressure admission aperture 2 apertures, described cone 4 tops can be stretched in the high pressure admission aperture 2, and the bottom of piston 3 is connected with spring 5, is provided with baroceptor 6 in the valve body 1.Baroceptor 6 can be monitored the gas pressure in the valve body, increases operating security.

Cone 4 can move forward and backward to regulate air-flow air inlet area along the little axially bored line of high pressure admission with piston 3, and the sealing of high pressure admission aperture gas channel relies between cone and the high pressure admission aperture inwall and realizes.Because the bottom of piston 3 is connected with spring 5, spring 5 can promote piston 3 and close the high pressure admission aperture, by the elastic force of Regulation spring 5, can regulate the minimum cracking pressure of high pressure admission aperture, promptly regulates the minimum suction pressure of hyperbaric chamber.Relative prior art, cone end socket of the present utility model is in the process of moving forward and backward, the circulation area of gas is not to become maximum by minimum suddenly, but gradually change, relative discharge also is and gradually changes, help the stable input of gas like this, thereby make the flow of output also reach stable.

Claims (1)

1, a kind of sensing type reduction valve, comprise valve body (1), high pressure admission aperture (2), piston (3), it is characterized in that: the top center position of described piston (3) is provided with a cone (4), the footpath, the end of cone (4) is greater than high pressure admission aperture (2) aperture, described cone (4) top can be stretched in the high pressure admission aperture (2), the bottom of piston (3) is connected with spring (5), is provided with baroceptor (6) in the valve body (1).

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