SU1250824A1 - Rig for testing heat pipes - Google Patents

Description

The invention relates to heat engineering, in particular to apparatus (equipment) for testing heat pipes.

The aim of the invention is to expand the functionality and increase performance when testing heat pipes for efficiency,.

FIG. 1 shows the stand, a general view; in fig. 2 shows a rotor in plan view in FIG. 3 - carousel head, plan view; in fig. 4 is a section A-A in FIG. 3; in fig. 5 - carousel head, axial section.

The stand for testing heat pipes has a frame in the videte rotor 1 with holders 2 heat pipes 3 located on its periphery, a heater 4, a system 5 for measuring and recording temperature, a rotary head 6 with a rotation axis parallel to the axis of the rotor 1, equipped with a swivel bracket 7, on which the temperature sensor 8 and radial protrusions 9 are mounted, on which rollers 10 are mounted. On the carousel head 6, the protrusions 11 and the depressions 12 alternate in the axial direction from above. The swivel bracket 7 is provided with an elastic element 13 and the roller 14 in contact with the projections 11 and depressions 12, the rotary head 6. The holders 2 are provided arms 15 with rollers 16, the compression springs 17 and adjustable stops 18 was repeated opposed shaping of the heat pipe 3 or fins. The stand is equipped with a rotor 1 rotary actuator 19, a heat pipe position lock 20 and a limit switch 21. The carriage head 6 is mounted for movement along the axis of rotation. The system of temperature measurement and recording 5 contains an amplifier, a time-program device and an information organ (for example, Goden signal lamps, Vrak).

The stand works as follows.

Heat pipes 3 are installed in the holders 2, then turn on the actuator 19, which periodically rotates the rotor 1 and inserts the next pipe 3 into the control zone, where

a heater 4 and a carousel head 6 are installed. A pipe 3 with a housing (or radiator) interacts with rollers 10 on radial protrusions 9, while the carousel head 6 rotates, ri roller 14 tits along its surface while protrusions 11 and valleys 12 provide such spring-loaded movement

the bracket 7, that the temperature sensor 8 as it approaches the pipe 3 rises first and then, when the pipe takes a position for control, lowers and contacts with the body

pipe 3 or its radiator. The pipe 3 is fixed in the control position, the heater 4 is turned on and a predetermined heat output is supplied to the evaporation zone of the pipe 3.

 As a quality criterion for a heat pipe, characterizing the presence or absence of non-condensing gas in the pipe cavity, either the rate of temperature increase at a controlled point of the pipe, or the temperature difference along the length of the pipe (in which case the second carousel head is installed) can be accepted, while the system 5 processes the information coming from the temperature sensors accordingly and gives the result. Next, the tested pipe 3 is withdrawn from the control zone and a new heat pipe comes into its place.

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Compiler A.Lobanov Editor T.Parfenova Tehred L.Serdyukova Proofreader E.Roshko

Order 4397/33 Circulation 589 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (3)

1. STAND FOR TESTS OF HEAT PIPES, comprising a frame with holders of heat pipes, a temperature sensor and a heater in contact with the test heat pipe, characterized in that, in order to expand the functionality and increase productivity when testing pipes for performance, the frame is made in the form rotor with holders located on its periphery, and on the outside of the rotor there is additionally a rotary head with an axis of rotation parallel to the axis of the rotor and radial protrusions, carrying a rotation in the center first bracket for fixing the temperature sensor and mounted movably along its axis of rotation. 2. Stand pop. 1, characterized in that the carousel head is equipped with rollers mounted on radial protrusions and in contact with the test pipe. 3. The stand according to claim 1, characterized in that the bracket is spring-loaded and equipped with a roller in contact with the carousel head, on which protrusions and depressions alternating in the axial direction are additionally made. »SU„ „1250824