CN2338085Y

CN2338085Y - Apparatus for generating gases with automatic pressure control

Info

Publication number: CN2338085Y
Application number: CN 97249881
Authority: CN
Inventors: 王卫平
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-11-21
Filing date: 1997-11-21
Publication date: 1999-09-15
Anticipated expiration: 2007-11-21

Abstract

The utility model relates to an apparatus for generating gases with automatic pressure control, which belongs to the apparatus for generating chemical gases and can be used as small-and-medium-size chemical gas sources. The utility model is characterized in that the apparatus is provided with a pressure limiting regulation chamber which is communicated with reaction liquid, and the volume of the pressure limiting regulation chamber can increase elastically with the enlargement of internal atmospheric pressure. The utility model has the advantages of small volume, light weight, easy portability, convenient and tractable gas production, safe and practical atmospheric pressure, simple and flexible operation, etc.

Description

Automatic pressure-control gas generator

The utility model relates to an automatic, chemical gas generating device that accuse was pressed is suitable for miniature chemical air supply in the work.

At present, a high-pressure gas cylinder is generally adopted as a medium-small chemical gas source.

The defects of the method are as follows: the high-pressure gas steel cylinder has large overall dimension and weight, and is inconvenient to store and carry; the pressure is large and the use is inconvenient; after the gas is used up, the gas needs to be returned to a gas plant for filling by special equipment, and the regeneration after the gas is used up is very troublesome.

The utility model aims at: an automatic pressure-controlling gas generator is designed, which is small, exquisite, light, safe and practical in gas pressure and simple and flexible in operation, and can generate gas by a chemical reaction method, so that a gas steel cylinder can be used as a medium-small chemical gas source.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the automatic pressure-controlling gas generator includes reactor, reaction solid and reaction liquid as chemical gas generator and features that:

the device is provided with a pressure limiting regulation and control chamber which is communicated with the reaction liquid and can elastically increase when the internal air pressure is increased.

Owing to adopted foretell technical scheme, the utility model discloses compare with existing technique, have light in weight small, portable, produce gaseous convenient easy control and atmospheric pressure safe practicality, advantage such as easy and simple to handle flexibility.

The embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

As shown in fig. 1, the present invention comprises a reactor R, a reaction solid S, and a reaction liquid L.

The reactor R is formed by assembling and combining an outer barrel 1 for containing reaction liquid L, an inner barrel 2 for containing reaction solid S, a top cover 3 serving as a seal, a sealing rubber ring 4, a piston 10, a butterfly-shaped bag 6 and a valve 5. The inner cylinder 2 is arranged in the outer cylinder 1, the top cover 3 is sleeved on the inner cylinder 2, the pressing sealing rubber ring 4 is buckled on the outer cylinder 1, the top cover 3 is provided with three opening pipes a, b and c, a piston 10, a butterfly-shaped bag 6 and a valve 5 are respectively arranged on the three opening pipes, a spring 8 is arranged on the upper part of the piston 10, and the whole device is sealed. In order to make the device light, three major components of the reactor can be made by injection molding of light boiling water resistant plastics such as Polyethylene (PE), polypropylene (PP) and the like, and in order to make the device portable, the device can be designed into a bucket type, and handles 9 are arranged on two sides of the device.

The upper part of the inner cylinder 2 is provided with reaction solids S, the bottom side of the upper container is provided with a plurality of small holes h which can contain liquid to come in and go out, the lower part is a hollow container, and the hollow container is immersed in the liquid L to generate buoyancy to float the inner cylinder 2, so that the solid-liquid can be prevented from contact reaction; the middle of the inner cylinder 2 is provided with a slender mandril d which is sleeved in the central pipe b of the top cover 3 and extends out of the pipe orifice of the b, and the outside of the b is provided with a telescopic butterfly-shaped bag 6 shaped like a butterfly-shaped spring. With this structure, the push rod d can be pressed by human force at any time, so that the reaction solid S contained in the inner cylinder 2 moves to a proper position along with the inner cylinder 2 to realize the contact or separation of solid and liquid, and the gas generation or stop.

The butterfly bag at the head of the ejector rod d is externally provided with a fixing clamp 7 which can fix the ejector rod d at a certain position, so that the solid S at the upper part of the inner cylinder 2 can be fixed at a corresponding position to realize continuous contact reaction with the liquid L.

The reaction speed can be effectively controlled by adjusting the height of the mandril d. The deeper the push rod d is pressed, the more solid-liquid contact is, and the more the reaction is. If the fixing clamp 7 is loosened, the inner cylinder 2 floats upwards under the action of buoyancy, so that solid and liquid are separated, and the reaction can be stopped.

The piston 10 is arranged in a thick pipe a of the top cover 3, the spring 8 is arranged at the upper part of the piston 10, the pipe a is downwards and directly communicated to the bottom of the outer cylinder 1 to be communicated with the reaction liquid L, and the pressure limiting regulation and control chamber 11 is formed by the pipe a, the piston 10 and the spring 8. The spring 8 has a certain pressure tolerance at a certain position, if the internal air pressure is too large to exceed the pressure tolerance, the spring is compressed, so that the volume of the upward moving chamber 11 of the piston 10 is elastically increased, the internal air pressure of the device is reduced, and the safety and the practicability of the internal air pressure are maintained. Different springs have different withstand pressures, and springs with corresponding pressure resistance can be selected according to different required pressures so as to obtain the required pressure when in use.

The chamber 11 is in communication with the reaction liquid, allowing for efficient and automatic regulation of the reaction. When the push rod d is pressed down to enable solid-liquid contact reaction, if the reaction is too violent at the moment, the gas generation speed is higher than the gas outlet speed of thevalve 5, the gas pressure in the device is increased, the reaction liquid L is pressed into a part of the chamber 11, the liquid level is reduced, the solid-liquid contact is reduced, and the reaction speed is reduced until the gas generation speed is equal to the gas outlet speed of the valve 5; also, if the valve 5 is closed at this time, the reaction liquid L is continuously flowed into the chamber 11 by the increase of the gas pressure until the solid-liquid separation reaction is stopped. The chamber 11 thus has the dual function of limiting pressure and regulating the reaction.

As a chemical gas generating device, the utility model can be used for preparing gas which can be generated by the reaction of solid and liquid and is not easy to dissolve in the reaction solid or the reaction liquid, such as hydrogen (H)₂) Acetylene gas (C)₂H₂) Oxygen (O)₂) The catalyst can be prepared by the catalytic decomposition of aluminum particles, caustic soda solution, calcium carbide, saturated salt solution, hydrogen peroxide and the like, and the related reaction formulas are as follows:

when the aluminum particles are reacted with the caustic soda liquid to prepare the hydrogen, a defoaming agent is required to be added for defoaming, and after the reaction is finished, the waste solution obtained by the reaction can be recycled to reduce the gas production cost.

It is worth mentioning that: when the device is used, residual air in the reactor can influence the normal use of the gas, so that the valve 5 is opened to be emptied and the reaction is carried out for a period of time until the purity of the discharged gas meets the use requirement through inspection, which is the emptying operation that must be carried out before the device is used. The evacuation operation is carefully and thoroughly performed in the preparation of a fuel gas such as hydrogen gas or acetylene gas, which is a safety problem in use.

After the reaction medicine is consumed, the new medicine needs to be replaced in time; the reactor filled with the medicine is strictly prohibited to be inverted; when the device is not used for a long time, the medicine is taken out and placed.

Claims

The automatic pressure control gas generator comprises a reactor, reaction solids and reaction liquid, and is used as a chemical gas generating device and is characterized in that the reactor comprises a reaction chamber, a reaction chamber and a reaction chamber;

the device is provided with a pressure limiting regulation and control chamber which is communicated with the reaction liquid and can elastically increase when the internal air pressure is increased.