Vacuum-pumping system for multiple-dewar interlayer and vacuum-pumping method thereof

A vacuum pumping system and vacuum system technology, applied in fixed-capacity gas storage tanks, pressure vessels, liquid variable-capacity machines, etc., can solve the problems of long operation time of vacuum extraction process, low efficiency of vacuum extraction process, and difficulty in batching of Dewar tanks. Production and other problems, to achieve the effect of reducing the operation time of vacuum extraction, stable product quality and accurate vacuum degree

Active Publication Date: 2012-06-27
北京华诚浩达真空空压设备有限公司
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-bottle dewar interlayer vacuum pumping system and its vacuum extraction method, to solve the technical problems that the vacuum extraction process efficiency of the traditional dewar interlayer is low and the dewar interlayer is difficult to produce in batches; and solve The traditional dewar interlayer vacuum extraction process has the problems of long operation time, complicated process and serious waste of resources; it is also necessary to solve the problem of unstable product quality produced by the traditional dewar interlayer vacuum extraction process

Method used

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  • Vacuum-pumping system for multiple-dewar interlayer and vacuum-pumping method thereof
  • Vacuum-pumping system for multiple-dewar interlayer and vacuum-pumping method thereof
  • Vacuum-pumping system for multiple-dewar interlayer and vacuum-pumping method thereof

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Embodiment Construction

[0026] Examples see figure 1 , figure 2 As shown, this multi-bottle dewar interlayer vacuum pumping system includes a vacuum unit 1, a three-way pipe fitting A2, a bypass valve 3, a front valve 4, a three-way pipe fitting B5, a maintenance valve 6, a maintenance pump 7, and a system Main pump 8, water-cooled trap 9, three-way system main valve 10, liquid nitrogen cold trap 11 and vacuum system pipeline 12, wherein the vacuum unit 1 includes a main mechanical pump 19 and a booster pump 20, on the vacuum system pipeline 12 Dewar interlayer ports 13 are provided at intervals, and the vacuum system pipeline 12 is also provided with hot nitrogen ports 14 and resistance gauge and ionization gauge measuring point ports 15 .

[0027] The suction end of the main mechanical pump 19 communicates with the outlet end of the booster pump 20, the suction end of the booster pump 20 communicates with the first port of the three-way fitting A2, and the second port of the three-way fitting A2 ...

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Abstract

The invention relates to a vacuum-pumping system for multiple-dewar interlayer and a vacuum-pumping method thereof. The vacuum-pumping system comprises a vacuum unit, a three-way pipe fitting A, a bypass valve, a preceding stage valve, a three-way pipe fitting B, a holding valve, a holding pump, a system main pump, a water cold trap, a three-way system main valve, a liquid nitrogen cold trap and a vacuum system pipeline, wherein the vacuum unit comprises a main mechanical pump and a pressurizing pump, dewar interlayer opening ports are arranged on the vacuum system pipeline at intervals, and a hot nitrogen port is arranged on the vacuum system pipeline. The vacuum-pumping system can pump multiple dewars at one time, is high in efficiency, solves the problem of large-scale production of the dewars, and saves a great number of manpower and material resources. The vacuum-pumping method is simple in procedure so that operation time for pumping vacuum of the dewar interlayer is greatly shortened, and waste of resources is avoided.

Description

technical field [0001] The invention relates to a vacuum pumping system and a method for vacuum pumping the interlayer of a Dewar tank using the vacuum pumping system. Background technique [0002] At present, most Dewar tank manufacturers use a single vacuum pump to pump the interlayer of a single Dewar tank. This method has the following disadvantages: first, the efficiency is low, and the Dewar tank is difficult to produce in batches; During the production process, the tank needs to be repeatedly filled and pumped with nitrogen to increase the vacuum degree of the interlayer of the Dewar tank, so the operation time is too long, the process is too complicated, and it is easy to cause waste of resources; the third is in the complex vacuum process, Repeated operations by the operator are required, it is difficult to ensure the vacuum degree of the Dewar interlayer, and the product quality is unstable. [0003] The vacuum degree data in the interlayer of the Dewar tank is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B41/00F17C1/12
Inventor 于鲲陈箬伦许智勇
Owner 北京华诚浩达真空空压设备有限公司
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