CN102520097B - Zero air generator - Google Patents

Abstract

The invention relates to a zero air generator. The zero air generator comprises a micro reaction tank with a cross cylinder shape, wherein a cross cylinder comprises two intersected straight cylinders; a slot is formed at one end of a first straight cylinder; a catalyst bottle is put into the slot; a thread is tapped at the opening of the slot; a heating rod is arranged at the other end of the first straight cylinder; a heat conductor is arranged on the end face of a second straight cylinder, which is vertical to the end face on which the heating rod is arranged; a clamping sleeve is locked on a thread hole at the open end of the first straight cylinder through the thread; a gasket is arranged between the clamping sleeve and the end face of the first straight cylinder; a connecting nut is fixedly arranged on the clamping sleeve; an air pipe passes through the connecting nut, the clamping sleeve and the gasket in turn and stretches into the slot of the first straight cylinder; the second straight cylinder is clamped on a bottom cover; and an upper cover and the bottom cover are fixed together to form a closed box body. Air is directly used as a carrier gas source, the influence of the air to measuring accuracy is eliminated, and the zero air generator has a simple structure, a good purifying effect and long service life and is low in cost.

Description

A kind of Zero air generator

Technical field

The invention belongs to technical field of analytical instruments, is exactly specifically a kind of for monitoring and detect the portable Zero air generator of hydrocarbon compound

Background technology

When using portable chromatograph, need to use through purifying, the air at zero point that does not contain hydrocarbon compound is used as carrier gas, the at present purification carrier gas of portable chromatograph or be to adopt external steel cylinder that the mode of source of the gas is provided, but the weight and volume that external steel cylinder provides source of the gas to increase undoubtedly whole equipment is repeatedly filling thereby the source of the gas that steel cylinder provides can be used up needs simultaneously; Another presentation mode that purifies carrier gas is on portable chromatograph, to carry pneumatic pump, directly extracting gases use from background air of pneumatic pump, but owing to often containing detected compound composition in background air, while making it as carrier gas, can have influence on the levels of precision of detection, even if increase to the carrier gas of portable chromatograph, purify adsorption process, but the impact of sorbent suspension and adsorption time, clean-up effect is poor, and unstable, adsorbent needs constantly to change, increase the cost of production and application, structure is also comparatively complicated.

Summary of the invention

The object of this invention is to provide a kind of Zero air generator, this Zero air generator can directly utilize air to use as the purification carrier gas of portable chromatograph, does not need to change adsorbent, simple in structure, good purification, long service life, with low cost.

Technical scheme

In order to solve above-mentioned technical barrier, the present invention has designed a kind of Zero air generator, it is characterized in that: it comprises minisize reaction tank, described minisize reaction tank is cross cylinder body shape, cross cylinder comprises two crossing yi word pattern posts, wherein first yi word pattern cylinder one end has slotted eye, in slotted eye, be placed with the catalyzer bottle of dress catalyzer, the opening part of slotted eye has been attacked screw thread, on the first yi word pattern cylinder other end, heating rod is housed, on the second yi word pattern cylinder end face vertical with heating rod end face is installed, heat conductor is installed, screw fastening on the first yi word pattern cylinder openend threaded hole has cutting ferrule, between cutting ferrule and the first yi word pattern cylinder end face, pad is installed, on cutting ferrule, be fixed with attaching nut, tracheae is successively through attaching nut, cutting ferrule and pad stretch in the first yi word pattern cylinder slotted eye, the second yi word pattern cylinder clamp are on bottom, upper cover and bottom are fixed together and form the box body of a sealing.

Described minisize reaction tank volume is 10～50mL.

Inside described bottom, on wall, be covered with heat-preservation cotton.

Described bottom lateral surface is provided with bayonet socket.

Described upper cover and bottom are fixed together and form the box body of sealing with nut.

Beneficial effect

Pneumatic pump extracts background air from environment, at a certain temperature, enter Zero air generator, the hydrocarbon compound wherein containing, under the effect of catalyzer, reacts with airborne oxygen, Formed oxygen compound and water, thereby complete de-hydrocarbon process, thereby reach, meet air as the requirement of carrier gas, the present invention directly utilizes air as carrier gas source of the gas, avoided the impact of air on measuring accuracy, simple in structure, good purification, long service life, with low cost simultaneously.

Accompanying drawing explanation

Accompanyingdrawing 1 is exploded perspective view of the present invention.

Embodiment

Below in conjunction with drawings and Examples, the present invention will be further described.

As shown in Figure 1, a kind of Zero air generator, it comprisesminisize reaction tank 1, describedminisize reaction tank 1 is cross cylinder body shape, cross cylinder comprises two crossing yi word pattern posts, wherein first yiword pattern cylinder 101 one end have slotted eye, in slotted eye, be placed with thecatalyzer bottle 101a of dress catalyzer, the opening part of slotted eye has been attacked screw thread, on first yiword pattern cylinder 101 other ends,heating rod 2 is housed, on second yiword pattern cylinder 102 end faces vertical withheating rod 2 end faces are installed,heat conductor 3 is installed, screw fastening on the first yiword pattern cylinder 101 openend threaded holes has cuttingferrule 4, betweencutting ferrule 4 and the first yiword pattern cylinder 101 end faces, pad 5 is installed, oncutting ferrule 4, be fixed with attachingnut 6, tracheae 7 is successively through attachingnut 6, cuttingferrule 4 and pad 5 stretch in the first yiword pattern cylinder 101 slotted eyes, the second yiword pattern cylinder 102 clamp are onbottom 8,upper cover 9 andbottom 8 are fixed together and form the box body of a sealing.

On describedbottom 8 inner side walls, be covered with heat-preservation cotton 10.

Describedbottom 8 lateral surfaces are installed on bayonet socket 11.

Describedupper cover 9 andbottom 8 use nuts are fixed together and form the box body of sealing.

Describedminisize reaction tank 1 volume is 10～50mL.

The present invention is by the method based on chemical reaction, pneumatic pump extracts background air from environment, air is passed into theminisize reaction tank 1 that catalyzer is housed, the catalyst temperature of controlling incatalyzer bottle 101a byheating rod 2 andheat conductor 3 remains on certain value, at this certain value temperature, enter the hydrocarbon compound that contains in the air ofminisize reaction tank 1 under the effect of catalyzer, react with airborne oxygen, Formed oxygen compound and water, thus de-hydrocarbon process completed; In actual use, the temperature of controlling catalyzer can realize controlling the degree of depth of de-hydrocarbon, thereby reach, meets air as the requirement of carrier gas.The present invention directly utilizes air as carrier gas source of the gas, has avoided the impact of air on measuring accuracy simultaneously, simple in structure, good purification, long service life, with low cost.

Claims (4)

1. a Zero air generator, it is characterized in that: it comprises minisize reaction tank (1), described minisize reaction tank (1) is cross cylinder body shape, cross cylinder comprises two crossing yi word pattern posts, wherein first yi word pattern cylinder (101) one end has slotted eye, in slotted eye, be placed with the catalyzer bottle (101a) of dress catalyzer, the opening part of slotted eye has been attacked screw thread, on first yi word pattern cylinder (101) other end, heating rod (2) is housed, on second yi word pattern cylinder (102) end face vertical with heating rod (2) end face is installed, heat conductor (3) is installed, screw fastening on the first yi word pattern cylinder (101) openend threaded hole has cutting ferrule (4), between cutting ferrule (4) and the first yi word pattern cylinder (101) end face, pad (5) is installed, on cutting ferrule (4), be fixed with attaching nut (6), tracheae (7) is successively through attaching nut (6), cutting ferrule (4) and pad (5) stretch in the first yi word pattern cylinder (101) slotted eye, the second yi word pattern cylinder (102) clamp are on bottom (8), upper cover (9) and bottom (8) are fixed together and form the box body of a sealing,

Described minisize reaction tank (1) volume is 10～50mL.

2. a kind of Zero air generator as claimed in claim 1, is characterized in that: on the wall of described bottom (8) inner side, be covered with heat-preservation cotton (10).

3. a kind of Zero air generator as claimed in claim 1, is characterized in that: described bottom (8) lateral surface is provided with bayonet socket (11).

4. a kind of Zero air generator as claimed in claim 1, is characterized in that: described upper cover (9) and bottom (8) are fixed together and form the box body of sealing with nut.

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