RU1828536C - Filling unit for thermal pipe - Google Patents

Abstract

Usage: in the manufacture of heat pipes. The essence of the invention: the filling hole 5 of the heat pipe is blocked by a plug 1. At its lower end there is a gasket 4. At the junction of the plug 1 with the housing 7, an additional gasket is installed 6. The latter is made of material with an elastic modulus less than the elastic modulus of the gasket 4. The plug 1 is connected to body by thread. 1 ill. Joint venture from 00 to 00 eat from

Description

The invention relates to heat engineering and can be used for the manufacture of heat pipes.

The purpose of the invention is to simplify the design of the assembly, to prevent contamination of the heat pipe with sealing material, and to reuse the seal.

This goal is achieved in that the filling unit comprising a plug with a hole screwed into the heat pipe body and having a gasket at the lower end to close the filling hole has an additional gasket installed at the end of the heat pipe body to seal the plug with the body, this gasket made of material with an elastic modulus less than the elastic modulus of the gasket material to close the filling hole.

The drawing shows a node in position when refueling a heat pipe.

The filling unit is made in the form of a threaded plug 1 with a central filling hole 2. The upper part of the plug ends with a fitting 3 to be connected to the filling stand, and a gasket 4 is installed on the lower part to block the filling hole 5 of the heat pipe 7 located at the end of the housing 7. In this case, the module the elasticity of the gasket material 4 is greater than the elastic modulus of the gasket material 6. In this example, the gasket 4 is made of fluoroplastic - 4, and the gasket 6 is made of vacuum rubber. The node operates as follows. The plug 1 is screwed into the body of the heat pipe 7 so that the plug 1 is sealed with the body of the pipe 7 by the gasket 6, while the gasket 4 is not pressed against the seat of the body 7 and the filling hole 5 of the heat pipe is open. After filling the heat pipe, plug 1 is screwed up to

the stop and gasket 4 overlaps the filling hole 5. The gasket 6 is further compressed. When the plug is unscrewed, the gasket b returns to its original state. Proposed assembly tested

on a cylindrical heat pipe, the inner diameter of which is 25 mm, the length is 500 mm, the coolant is acetone. The heat pipe was evacuated to a pressure of Pa. Screwing the plug 1 all the way did not break

tightness between the housing 7 and the plug 1. Repeated screwing - unscrewing did not lead to a deterioration in the tightness of the node. The proposed filling unit made it possible to bring the refueling cycle of the heat pipe up to 5000 times, without changing the gaskets and without compromising the tightness.

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Claims (1)

SUMMARY OF THE INVENTION A heat pipe filling unit comprising a plug with an opening connected to the heat pipe body by means of a thread and having a gasket at the lower end to close the filling opening of the pipe, characterized in that, in order to simplify the design of the reusable seal assembly, to prevent clogging of the heat pipe material of the sealing layer, the plug at the junction with the end of the pipe body for sealing is equipped with an additional gasket made of material with an elastic module STI is less than the elastic modulus of the gasket material is mounted on the lower end of the stopper.