Unsymmetrical dimethylhydrazine decontamination apparatus and unsymmetrical dimethylhydrazine decontamination method

A technology of unsymmetrical dimethylhydrazine and decontamination, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve problems such as difficulty in decontamination, surrounding environmental pollution, and expansion of polluted areas, and achieve the degree of pollution prevention Effect

Active Publication Date: 2017-04-26
BEIJING INST OF AEROSPACE TESTING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention utilizes the air source device and the powder conveying pump to spray the unsymmetrical dimethylhydrazine decontaminant, which satisfies the application of the powder decontaminant. This operating condition overcomes the fact that liquid decontaminants in the prior art cannot be used in an environment below freezing point. During the decontamination process, it is easy to cause the polluted liquid to flow around, causing surrounding environmental pollution and expanding the polluted area. It is difficult to use such as charged Decontamination of environment and precision instrument environment

Method used

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  • Unsymmetrical dimethylhydrazine decontamination apparatus and unsymmetrical dimethylhydrazine decontamination method
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  • Unsymmetrical dimethylhydrazine decontamination apparatus and unsymmetrical dimethylhydrazine decontamination method

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Embodiment 1

[0035] Such as figure 1 and 4 As shown, as a further preferred mode of the embodiment of the present invention, the pneumatic powder conveying device 4 has a feed port 41 and a discharge port 42. On the upper part of the outer wall 432 of the working chamber 43, the feed port 41 is connected with the powder decontamination agent storage tank 2, the feed port 41 has a negative pressure for sucking the decontamination agent under the action of high-pressure gas, and the discharge port 42 has a spray The positive pressure of the decontamination agent, the powder is sucked into the pump chamber under the action of negative pressure, and then output in a positive pressure state at the discharge port.

[0036] Such as Figure 4 As shown, preferably, the pneumatic powder conveying device 4 is a pneumatic elastic diaphragm pump. The pneumatic elastic diaphragm pump includes two symmetrical working chambers 43, and check valves are provided at the inlet 41 and the outlet 42 of the wo...

Embodiment 2

[0039] The difference between this embodiment and the above-mentioned embodiment is that the pneumatic elastic diaphragm pump is replaced by a Venturi tube structure as the pneumatic powder conveying device. The high-pressure gas enters the air inlet to generate negative pressure at the feed inlet, and the powder is sucked into the tube body, and finally the powder in the tube is discharged through the high-pressure gas to carry out the decontamination operation.

Embodiment 3

[0041] Such as figure 1 and 2 As shown, as a further preferred mode of the embodiment of the present invention, a pressure reducer 61 is installed on the gas pipeline 6 between the high-pressure gas cylinder 5 and the pneumatic powder conveying device 5, and a pressure reducer 61 is installed between the high-pressure gas cylinder 5 and the pressure reducer 61. A control valve 62 for controlling the flow of gas in the high-pressure gas cylinder 5 is provided, and the pressure of the gas delivered by the high-pressure gas cylinder 5 is reduced to the working pressure of the pneumatic powder conveying device through the pressure reducer 61, so that the output is more stable.

[0042] Such as figure 1 and 2 An air guide tube 63 is installed on the gas delivery pipeline 6 between the pressure reducer 61 and the pneumatic powder delivery device 4 , and one end of the air guide tube 63 is connected to the delivery pipeline 6 between the pressure reducer 61 and the pneumatic powder...

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Abstract

The invention discloses an unsymmetrical dimethylhydrazine decontamination apparatus and an unsymmetrical dimethylhydrazine decontamination method. The apparatus comprises a powdery decontaminant storage tank and a decontaminant injection system, the decontaminant injection system is connected with the powdery decontaminant storage tank, the injection system comprises a pneumatic powder conveying device and a gas source device, one end of the pneumatic powder conveying device is connected with the material conveying opening of the powdery decontaminant storage tank, and the other end of the pneumatic powder conveying device is connected with the gas source device through a gas conveying pipeline. The gas source device and the powder conveying pump are used to inject an unsymmetrical dimethylhydrazine decontaminant in order to meet application of the powdery decontaminant and realize soft powder conveying of the pneumatic powder conveying device and increase of the decontamination efficiency; and gas pressure used as a power source is suitable for various working conditions, and overcomes the disadvantages of unable use of a liquid decontaminant in environment with the temperature being less than a freezing point in the prior art, surrounding environment pollution easily caused by pollutant flowing around in the decontamination process, enlarged pollution area, and difficulty in decontamination of charged environment and precious instrument environment.

Description

technical field [0001] The invention relates to the technical field of decontamination of hydrazine propellants, in particular to a decontamination device for decontamination of powdered unsymmetrical dimethylhydrazine and a decontamination method using the decontamination device of unsymmetrical dimethylhydrazine . Background technique [0002] Unsymmetrical dimethylhydrazine is a colorless and flammable liquid, which is now widely used in launching tests of missiles, satellites, spaceships, etc. and as the main fuel of launch vehicles. Therefore, the safety and reliability of decontamination products, methods and equipment of unsymmetrical dimethylhydrazine have been paid much attention. In the existing decontamination method for unsymmetrical dimethylhydrazine, a decontamination solution containing organic acid aqueous solution and other components is used, and the decontamination equipment is also to meet the needs of the liquid decontamination agent. [0003] Applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/83B01D53/54
CPCB01D53/54B01D53/83
Inventor 孙鹤郑雪玲荆彦文郝战焱郭振闫子良刘岩金朝旭刘朝阳许宏
Owner BEIJING INST OF AEROSPACE TESTING TECH
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