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Device for eliminating straight flow of two-way air inlet pulsing pipe refrigerator

A pulse tube refrigerator and air intake pipeline technology, applied in the field of using elastic diaphragm to eliminate direct current and transmitting pressure waves, can solve the problems of performance deterioration, difficult adjustment, difficult processing, etc., to eliminate direct current, simple structure, and improve thermal performance. Effect

Inactive Publication Date: 2006-08-16
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the direct current is formed, on the one hand, the working gas will bring the cooling capacity of the cold head 4 of the regenerator to the water cooler 2 at the hot end of the regenerator, and at the same time bring the heat at the water cooler 7 at the hot end of the pulse tube to the cold head of the pulse tube 4, resulting in deterioration of the performance of the entire system
[0004] At present, researchers have come up with many methods to suppress the direct current in the pulse tube refrigerator, but some of these methods are difficult to process, some have complex structures, and some are difficult to adjust, all of which have certain shortcomings. Thoroughly, simply and effectively eliminating direct flow is an important issue in the study of pulse tube refrigerators

Method used

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  • Device for eliminating straight flow of two-way air inlet pulsing pipe refrigerator
  • Device for eliminating straight flow of two-way air inlet pulsing pipe refrigerator
  • Device for eliminating straight flow of two-way air inlet pulsing pipe refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: adopt image 3 In the shown structure, the pulse tube refrigerator is a single-stage two-way air intake structure, and the elastic membrane box 10 is installed on the two-way air intake pipeline between the two-way air intake valve 12 and the heat exchanger at the hot end of the pulse tube. The detailed structure of elastic bellows 10 is as figure 2 and Figure 4 Shown; Elastic bellows 10 is divided into two parts, and the edge place of every part is flange structure, and central part then one side is sunken and is semi-ellipsoidal, and the other side protrudes, and there is hole in the center to connect two-way air intake pipe 13; In the center is a silicone elastic diaphragm 11 with a thickness of 1 mm, and the elastic diaphragm 10 is sandwiched between two flanges by bolts during installation. The diameter of two-way air inlet pipe 13 is 2mm, and the length of ellipsoidal cavity in elastic bellows 10 is 8mm, and the diameter of maximum cross-section ...

Embodiment 2

[0032] Embodiment 2: adopt image 3 In the structure shown, the pulse tube refrigerator is a single-stage two-way air intake structure, and the elastic membrane box 10 is installed between the two-way air intake valve 12 and the heat exchanger at the hot end of the pulse tube. The detailed structure of elastic bellows 10 is as figure 2 and Figure 4 Shown; Elastic bellows 10 is divided into two parts, and the edge place of every part is flange structure, and central part then one side is sunken and is semi-ellipsoidal, and the other side protrudes, and there is hole in the center to connect two-way air intake pipe 13; In the center is a silicone elastic diaphragm 11 with a thickness of 1 mm, and the elastic diaphragm 10 is sandwiched between two flanges by bolts during installation. The diameter of the two-way air intake pipe 13 is 2mm, the length of the elliptical cavity in the elastic bellows 10 is 8mm, and the diameter at the largest cross-section is 20mm (100 times that o...

Embodiment 3

[0033] Embodiment 3: adopt Figure 5 In the structure shown, the pulse tube refrigerator is a two-stage two-way intake structure, Figure 5 The middle mark 14 is a secondary regenerator, the mark 15 is a secondary cold head, the mark 16 is a secondary pulse tube, and the mark 17 is an inertia tube; the heat exchanger between the intake pipe 1 of the pulse tube refrigerator and the hot end of the primary pulse tube Elastic bellows 10 are respectively installed between the two-stage vessel hot end heat exchanger; the detailed structure of elastic bellows 10 is as follows: figure 2 and Figure 4 Shown; The diameter of the two-way air intake pipe is 1mm, the length of the ellipsoidal cavity in the elastic bellows 10 is 8mm, and the diameter at the maximum cross section is 7.5mm (50 times the diameter of the two-way air intake pipe); the elastic diaphragm is 0.5mm thick Fluorine rubber membrane with a tension of 50N / m 2 about.

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Abstract

An elimination cocurrent equipment of bilateral inflow aqueduct vas refrigerator, it comprises: the elastic capsule stack which is set on the bilateral inflow pipeline of the bilateral inflow aqueduct vas refrigerator and the one or both sides of its bilateral intake valve is set the elastic capsule; the elastic capsule stack is a cavum which connect with the bilateral inflow pipeline on both ends; the elastic capsule divide the elastic capsule stack into two parts in the middle of it. The advantages are: the elastic capsule can interdict cocurrent in the aqueduct vas refrigerator as the pressuring- wave pass at its both sides, that can eliminate cocurrent absolutely in bilateral closed loop, improve the thermal capability of the bilateral inflow vessel refrigerator.

Description

technical field [0001] The invention mainly relates to the technical field of refrigeration and low temperature, in particular to a method for eliminating direct current and transmitting pressure waves by using an elastic diaphragm. Background technique [0002] Pulse tube refrigerator technology occupies a pivotal position in the field of modern cryogenic refrigerator technology. It is small in size and has no moving parts. It has a very wide application prospect in aerospace and military fields. A typical pulse tube refrigerator such as figure 1 As shown, it is mainly composed of regenerator 3, regenerator hot end water cooler 2, cold head 4, two-way intake valve 12, two-way intake pipeline 13, pulse tube 6, pulse tube hot end water cooler 7, diversion It is composed of device 5, small hole valve 8, gas storage 9, etc. Some pulse tube refrigerators also have an inertia tube between the small hole valve and the gas storage. The two-way air intake structure can greatly imp...

Claims

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Application Information

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IPC IPC(8): F25B23/00
Inventor 罗二仓胡剑英吴张华戴巍
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI