Device for testing hollow articles on thermal stability

 

(57) Abstract:

Use: to test the technique, when testing hollow articles on thermostability. The inventive device includes two Autonomous loop circulation of hot and cold environments, test article, United channels with the respective paths, and means for removal of the medium from the product. Means for draining of the environment in the form of channels connecting the test item with suction cavities circulation contours. This action prevents thermal Cycling of the nodes and this increases their durability and reliability. 1 Il.

The invention relates to test equipment, in particular to devices for testing hollow articles on thermostability.

Testing technique that provides testing hollow articles on thermal stability, in addition to performing its main technical tasks must meet the following requirements:

should be excluded termomagnitnye nodes stand that will allow you to achieve high reliability and durability of the stand;

the design of the stand must be optimized from the point of view of energy consumption.

Known installation [race environments the circuit hot water heater, the cold water circuit with a fridge, electric pump, KD, mixing tank, shared paths, two channels, each of which connects the circuit hot environment with heater and circuit cold environment for a refrigerator with a mixing capacity.

The disadvantages of this device are:

1) thermal Cycling of the unit when the mode is changed terminallerine, which leads to a decrease of the durability and reliability of the installation;

2) increased energy expenditures, caused by heating or cooling medium in relation to the temperature in the mixing tank modes terminallerine.

These drawbacks are partially addressed in [2] contains two self-loop circulation of hot and cold environments and a means for removal of the medium from the internal cavity of the test items.

The disadvantages of this setup are periodic loss of contours installation with depending on the mode terminallerine the test items of different temperature condition, which leads to thermal Cycling of the nodes located on the drain to the environment from the test items, and increase energy consumption.

eucast on author. St. N 1065733 adopted for the prototype.

The purpose of the invention the exception of thermal Cycling of the nodes of the stand, which in turn can increase the reliability and durability of the device simultaneously, a significant reduction of energy consumption.

This objective is achieved in that in each circuit means for draining environment performed as part of the piping with shutoff valves, one end of which is communicated with a suction cavity of the circular pump, and the other is in communication with the channel for supplying a medium.

These differences are significant, as by the above means is supplied from the test items in the circuit, the temperature of which has environment.

The drawing shows a schematic diagram of an apparatus for testing hollow articles on thermostability.

The device includes:

offline circulation contours cold 1 hot and 2 environments;

test item 3 channels 4, 5 for the supply of hot and cold environments, respectively;

channels 6, 7 connecting through the locking device 8, 9 test item to the suction cavities hot and cold circulation contours.

On these to the RA circulation includes:

the pump 12, 13;

the pressure compensator 14, 15 gauges;

shut-off valves 16, 17 and 18, 19;

bypass sections 20, 21;

the temperature sensors 22, 23, controlling the temperature of the fluid paths.

In addition, the composition of the cold loop includes refrigerator 24, hot circuit, the heater 25.

The operation of the device is as follows.

Initially, the parameters of the hot and cold circuits are brought to specified values.

Monitoring the temperatures of the environments produced by the sensors 22 and 23, respectively.

To the subject product 3 channel 4 through the locking device 16 is fed to the cold environment, which is then removed from the test items on the channel 5 and the locking device 17 in the circuit cold environment.

At this time, the circulation in the circulation loop hot medium 2 is performed via the bypass section 21.

When the mode is changed terminallerine opens the valve 18, 9, close valves 16, 17 and by means of pump hot circuit 13, the displacement of the cold environment of the internal cavity of the test items in the circuit cold environment 1.

The control mode is provided a temperature sensor 11, the corresponding temperature of the hot circuit, with the locking device 9 is closed, and a locking device 19 is opened. Is the hot air terminallerine of the test items. Circulation in the circulation loop cold medium 1 is performed via the bypass portion 20.

In the subsequent mode is changed terminallerine of the test items (cool mode) open the shut-off device 16, 8, closed shut-off devices 18, 19.

Is the displacement of the hot medium from the internal cavity of the test items in the circuit hot medium 2 via a pump cold circuit 12.

The control mode of displacement of the cold environment is the temperature sensor 10.

Eviction protection ends when the sensor 10 corresponding to the temperature of the cold circuit, with the locking device 8 is closed and the shut-off device 17 is opened. Is the mode of cold terminallerine of the test items.

Further cycles terminallerine again.

To provide a reciprocating motion in the tested product, it is advisable to place the vertical whom I testing hollow articles on thermal stability, along with significant reduction of energy consumption eliminates thermal Cycling as the main contours of circulation (cold or hot), and means providing for the removal from the test item, which increases the reliability and durability of the device.

Device for testing hollow articles on the heat resistance, containing two self-loop circulation of hot and cold environment, each of the circuits consists of a communicated with each other through the piping of the circulation pump with a suction cavity, pressure compensator, temperature sensors, valves, means for draining medium and channel for supplying a medium to the product, characterized in that each circuit means for draining environment performed as part of the piping with shutoff valves, one end of which is communicated with a suction cavity of the circulation pump and the other is in communication with the channel for supplying a medium.

 

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