CN215610613U - Ozone gas blending device for ozone aging test box - Google Patents

Abstract

The utility model discloses an ozone gas blending device for an ozone aging test box, which comprises an outer sleeve, wherein two rows of flow-resisting mixing plates are respectively arranged on two opposite sides in the outer sleeve along the axial direction of the outer sleeve, and the two rows of flow-resisting mixing plates are arranged in a staggered manner; the ozone gas mixing device is made of polytetrafluoroethylene or/and glass. The ozone aging test box can fully and uniformly mix the diluted air and the ozone gas generated by the ozone gas generating device and then supply the mixed gas to the ozone aging test box.

Description

Ozone gas blending device for ozone aging test box

Technical Field

The utility model relates to a gas mixing technology, in particular to an ozone gas mixing device for an ozone aging test chamber.

Background

The ozone aging test box is an important test device which is widely applied to aging tests of products such as rubber and plastic products, automobiles, textiles, wires and cables. Therefore, whether the gas concentration in the box is uniform and stable directly relates to the reliability detection result of the final product. The mixing mode in the ozone aging test box in the current market is mainly two types:

1) ozone gas is uniformly mixed by arranging a fan in the box, but the method cannot generate ozonized gas with uniform concentration in the whole test space in the box due to the limitation of the installation position of the fan and the adjustment of the wind speed, so that the ozone gas concentration of tested samples at different positions in the box is inconsistent, and the ozone reliability test result of the tested samples in the same batch is inaccurate.

2) The rotation of the sample rack can make the tested sample be oxidized by ozone gas with different concentration in each region in the box, and the revolution and rotation of the sample rack can make the tested sample be oxidized by ozone gas in each region in the box, thereby reducing the error of detection result caused by the non-uniform ozone gas in the box. However, in the actual detection process, the problem of uniform ozone gas concentration in the ozone box cannot be fundamentally solved due to the influence of factors such as revolution and rotation speeds of the sample holder, flow velocity of air flow in the box and the like.

Therefore, the defect of uneven ozone gas concentration in the existing ozone aging test can bring great uncertainty to the final detection result, so that the detection results of related products have large differences, the hidden danger of the product quality cannot be found, and serious product quality accidents are caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide an ozone gas blending device for an ozone aging test chamber.

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

an ozone gas blending device for an ozone aging test chamber comprises an outer sleeve, wherein two rows of flow-resisting mixing plates are respectively arranged on two opposite sides in the outer sleeve along the axial direction of the outer sleeve, and the two rows of flow-resisting mixing plates are arranged in a staggered mode; the ozone gas mixing device is made of polytetrafluoroethylene or/and glass.

Further, the outer sleeve is of a conical structure.

Further, the shape of the flow-resisting mixing plate is circular.

Further, the height of each flow-resisting mixing plate ranges from 85% to 90% of the diameter of the cross section of the inner cavity of the outer sleeve at the position of each flow-resisting mixing plate.

Compared with the prior art, the ozone gas mixing device for the ozone aging test chamber can fully and uniformly mix the diluted air and the ozone gas generated by the ozone gas generating device and then supply the mixed gas to the ozone aging test chamber.

Drawings

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

fig. 2 is a schematic cross-sectional view at the choked flow mixing plate in fig. 1.

Detailed Description

The technical scheme of the utility model is further explained by combining the drawings and the embodiment.

Please refer to fig. 1, which illustrates an ozone gas blending device for an ozone aging test chamber, comprising an outer sleeve 11, wherein a row of 3 flow-resisting mixing plates 12 are respectively arranged on two opposite sides in the outer sleeve 11 along the axial direction of the outer sleeve, and the two rows of flow-resisting mixing plates are arranged in a staggered manner at uniform intervals; the ozone gas mixing device is made of materials which do not react with the ozone gas and do not adsorb the ozone, such as polytetrafluoroethylene or/and glass. The diluted air and the ozone gas are simultaneously introduced into the airflow inlet 21, and the two gases are subjected to collision mixing for multiple times in a bent channel formed by a flow-resisting mixing plate to form uniformly-mixed ozone mixed gas, and enter the ozone aging test chamber through the airflow outlet 22. A large number of experiments prove that the best ozone gas uniform mixing effect can be achieved when the flow-resisting mixing plate is circular as shown in figure 2 and the diameter of the flow-resisting mixing plate is 85-90% of the diameter of the cross section of the inner cavity of the outer sleeve at the position of the flow-resisting mixing plate.

Preferably, when the outer sleeve 11 is in a conical structure, the flow rate of the gas flowing into the ozone aging test chamber can be controlled, which is more favorable for the requirements of the aging test.

Taking an ozone aging test chamber with the inlet flow of the dilution air being less than 95L/min and the ozone gas flow generated by the required ozone gas generating device being less than 5L/min as an example, the diameter of the inlet 21 is 40mm, the diameter of the outlet 22 is 100mm, and according to the principle that the gas flows in the same pipeline are equal, Q is V is S (Q is the gas flow in the pipeline, V is the flow velocity of the gas in the pipeline, and S is the sectional area of the pipeline), V is known_{Intake air}/V_{Air outlet}＝S_{Air outlet}/S_{Intake air}；

The gas flow rate of the gas flow outlet 22 was 0.16 times the flow rate of the gas flow inlet 21. By the method for reducing the flow rate, the ozone gas can be further uniformly and fully mixed, and the reliability test result of the tested sample in the ozone aging box is accurate and reliable.

It will be appreciated by those skilled in the art that the above embodiments are for illustrative purposes only and are not intended to be limiting, for example, the baffle mixing plate may take other shapes such as arcuate, etc., and that variations and modifications to the above described embodiments are within the spirit and scope of the utility model as defined by the appended claims.

Claims (4)

1. An ozone gas blending device for an ozone aging test chamber is characterized in that,

the device comprises an outer sleeve, wherein two opposite sides in the outer sleeve are respectively provided with a row of mixed flow blocking plates along the axial direction of the outer sleeve, and the two rows of mixed flow blocking plates are arranged in a staggered manner;

the ozone gas mixing device is made of polytetrafluoroethylene or/and glass.

2. The ozone gas blending device according to claim 1, wherein:

the outer sleeve is of a conical structure.

3. The conical conduit of claim 1, wherein:

the shape of the flow-resisting mixing plate is circular.

4. The conical conduit of claim 1, wherein:

the height of each flow-resisting mixing plate is 85-90% of the cross-section diameter of the inner cavity of the outer sleeve at the position of each flow-resisting mixing plate.

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