KR20120054395A - Tensioner for using low temperature - Google Patents

Abstract

PURPOSE: A stretcher of low temperatures is provided to enhance the efficiency of confirming properties of a matter by reducing time required for a temperature increase and decrease to confirm the properties of the matter. CONSTITUTION: A stretcher of low temperatures(100) comprises a chamber(110), a fluid tank(120), a first feeding line(121), a second feeding line(122), a heating unit(140), and a spraying unit(150). Measurement objects are installed in an internal space of the chamber. The fluid tank stores fluid for controlling a temperature inside the chamber. The first feeding line connects the fluid tank and chamber and supplies fluid to the chamber. The second feeding line connects the fluid tank and chamber and heats the fluid, thereby supplying to the chamber. The spraying unit is connected to the first and second feeding lines and sprays the fluid heated or fluid to the inside the chamber.

Description

Low Temperature Tensioner {TENSIONER FOR USING LOW TEMPERATURE}

The present invention relates to a low-temperature tensioner, and more particularly to a low-temperature tensioner for reducing the time required for temperature drop and rise to check the properties of the measurement object.

Metallic materials have various physical properties such as toughness, ductility, brittleness, and rigidity. In order to check the toughness of these, a tensioner is generally used.

The toughness of the metal material exhibits different properties depending on the surrounding environment, in particular the temperature, and if necessary, the toughness in the cryogenic environment of -100 ° C. or lower needs to be measured. For example, the metal material used in the storage tank of the liquefied natural gas liquefied natural gas needs to check the toughness in the cryogenic environment, the toughness can be measured using a tensioner having a cryogenic chamber.

The cryogenic environment of such a tensioner can be created by supplying cryogenic fluids such as liquid nitrogen to the chamber. When the experiment is finished, the temperature in the chamber can be increased by exposing the chamber to the atmosphere.

However, such a conventional tensioner not only takes time to lower the temperature of the measurement object, but also takes a long time to raise the temperature by exposing the measurement object to the atmosphere, and thus time to confirm the actual physical properties of the measurement object. There was a problem that it takes more time to prepare.

Embodiments of the present invention are to provide a low-temperature tensioner that can improve the efficiency of the physical property check results while improving the efficiency of the physical property check by reducing the time required for temperature drop and rise to check the properties of the measurement object .

According to an aspect of the present invention, a chamber in which a measurement object is installed therein, a fluid tank in which a liquid nitrogen fluid for temperature control inside the chamber is stored, and the fluid tank and the chamber are connected to each other, the liquid nitrogen fluid A first supply line for supplying gas to the chamber, a second supply line connecting the fluid tank to the chamber, a second supply line for heating the nitrogen gas fluid and supplying the fluid to the chamber, and a second supply line. Low temperature comprising a heating unit for heating and vaporizing the nitrogen-based fluid, the injection unit is connected to the first supply line and the second supply line, the injection unit for injecting the liquid nitrogen fluid or nitrogen gas heated fluid into the chamber Tensioners can be provided.

The heating unit may include a vaporizer for vaporizing the liquid nitrogen gas fluid supplied through the second supply line, and a heater installed at a rear end of the vaporizer and heating the vaporized nitrogen gas fluid. Low temperature tensioners can be provided.

The injection unit may include a first nozzle connected to the first supply line for injecting the liquid nitrogen fluid into the measurement object, and a nitrogen gas connected to the second supply line for injecting the heated fluid into the measurement object. It can be provided a low-temperature tensioner comprising a second nozzle to.

In addition, the first nozzle and the second nozzle may be arranged in a plurality of side by side in the upper portion of the cryogenic chamber, it can provide a low-temperature tensioner, characterized in that a plurality of injection holes are formed in the longitudinal direction in each lower portion. .

In addition, the fluid may be a liquid nitrogen, the heated fluid may provide a low temperature tensioner, characterized in that the nitrogen gas.

In addition, the low-temperature tensioner may further include a switching valve for selectively supplying the fluid to any one of the first supply line and the second supply line.

Embodiments of the present invention can shorten the time required for temperature drop and rise to check the physical properties of the measurement object to increase the efficiency of the physical property check and improve the reliability of the physical property check result.

1 is a block diagram showing a low-temperature tensioner according to an embodiment of the present invention,
2 is a perspective view showing a cryogenic chamber of a low temperature tension machine according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a block diagram showing a low-temperature tensioner according to an embodiment of the present invention.

As shown in FIG. 1, the low-temperature tensioner 100 according to an embodiment of the present invention may have a temperature atmosphere of -100 ° C. or lower, and a chamber 110 and a chamber (a measurement object installed therein). A fluid tank 120 in which a cryogenic fluid having a temperature of −100 ° C. or less supplied to the chamber 110 is stored for controlling the temperature of the 110, a switching valve 130 for switching a supply path of cryogenic fluid, A heating unit 140 installed in any one of the cryogenic fluid supply paths to heat the cryogenic fluid, and an injection unit 150 installed in the chamber 110 to inject the cryogenic fluid and the heated fluid to the measurement object. Can be.

The chamber 110 may be provided with a measurement object for checking physical properties, and may be made of a material for enduring cryogenic temperatures, and an insulation member for insulation may be installed on the sidewall of the chamber 110. In addition, the chamber 110 may be provided with a jig for installing the measurement object on the inside, a door for entrance and exit may be installed on one side.

The fluid tank 120 stores a cryogenic liquid, for example, liquid nitrogen may be stored, but is not limited thereto. In addition, the fluid tank 120 may be made of an insulation structure or material for enduring the temperature of the cryogenic fluid, connected to the first supply line 121 and the second supply line 122 to the chamber 110 to each line. Cryogenic fluids can be supplied. To this end, a pump (not shown) may be connected to each line. The first supply line 121 is a line used for lowering the temperature of the chamber 110, and the second supply line 122 is a line used for increasing the temperature of the cryogenic chamber 110. Here, it is apparent that the first supply line 121 and the second supply line 122 should be made of a material to withstand cryogenic temperatures similarly to the fluid tank 120.

The selector valve 130 selects the first supply line 121 and the second supply line 122 to supply the cryogenic fluid. For example, the switching valve 130 may be a three-way valve installed at a portion where the first supply line 121 and the second supply line 122 branch from each other. Alternatively, the plurality of bidirectional valves may be provided in the first supply line 121 and the second supply line 122, respectively.

The heating unit 140 is installed in the second supply line 122 and heats the cryogenic fluid to the chamber 110. In the present embodiment, the heating unit 140 is installed on the vaporizer 141 and the rear end of the vaporizer 141 to vaporize the cryogenic fluid supplied through the second supply line 122 and vaporized by the vaporizer 141. What is comprised with the heater 142 which heats a fluid is demonstrated to an example.

Here, the vaporizer 141 may be a heat exchanger for vaporizing the cryogenic fluid by heat exchange between the cryogenic fluid and the fluid at room temperature such as water. In addition, the heater 142 may be an electric heater for the convenience of operation and temperature control, and various heating means may be used, without being limited thereto.

The injection unit 150 is a chamber 110 to inject the cryogenic fluid supplied through the first supply line 121 and the fluid heated by the heating unit 140 and supplied through the second supply line 122 to the measurement object. ) Is installed inside.

The injection unit 150 may be configured as a nozzle that performs an operation for simultaneously injecting a cryogenic fluid and a heated fluid to a measurement object, but in order to secure durability by reducing damage due to thermal shock caused by temperature rise and fall, As in the embodiment, the first nozzle 151 connected to the first supply line 121 to inject the cryogenic fluid to the measurement object, and the second to connect the heated fluid connected to the second supply line 122 to the measurement object The nozzle 152 may be included.

As shown in FIG. 2, the first and second nozzles 151 and 152 may be arranged in a plurality of side by side in the upper part of the chamber 110, and a plurality of injection holes may be formed in the lower part of the chamber 110 along the length direction.

Referring to the operation of the low-temperature tensioner according to the present invention having such a configuration as an example as follows.

After the measurement object is installed in the chamber 110 to check the physical properties of the measurement object, the cryogenic fluid is supplied to the cryogenic chamber 110 through the first supply line 121 by the operation of the switching valve 130. . The cryogenic fluid supplied to the chamber 110 is injected into the measurement object by the first nozzle 151 to cool the measurement object.

When the cooling of the measurement object is finished, when the temperature of the measurement object is to be raised, the cryogenic fluid is supplied to the cryogenic chamber 110 through the second supply line 122 by the operation of the switching valve 130. At this time, the cryogenic fluid is heated by the driving of the heating unit 140, thereby raising the temperature of the measurement target by allowing the fluid heated from the second nozzle 152 to be injected onto the measurement target.

According to the configuration of the present invention as described above, by reducing the time required for the temperature drop and rise to check the physical properties of the measurement object to increase the efficiency of the physical properties check, it is possible to improve the reliability of the physical properties check results.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. For example, those skilled in the art can change the material, size, etc. of each component according to the application field, or combine or replace the embodiments in a form that is not clearly disclosed in the embodiments of the present invention, this is also the present invention It will not go beyond the scope of the. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and that such modified embodiments are included in the technical idea described in the claims of the present invention.

110: cryogenic chamber 120: fluid tank
121: first supply line 122: second supply line
130: switching valve 140: heating section
141: carburetor 142: heater
150: injection nozzle 151: first nozzle
152: second nozzle

Claims (6)

A chamber in which the measurement object is installed,
A fluid tank in which a fluid for controlling temperature inside the chamber is stored;
A first supply line connecting the fluid tank to the chamber and supplying the fluid to the chamber;
A second supply line connecting the fluid tank to the chamber and heating the fluid to supply the chamber;
A heating unit installed in the second supply line and configured to heat and vaporize the fluid;
A low temperature tensioner connected to the first supply line and the second supply line and including an injection unit for injecting the fluid or the heated fluid into the chamber. The method of claim 1,
The heating unit includes:
A vaporizer for vaporizing the fluid supplied through the second supply line;
And a heater installed at the rear end of the vaporizer, the heater heating the vaporized fluid. The method of claim 1,
The injection unit
A first nozzle connected to the first supply line and injecting the fluid to the measurement object;
And a second nozzle connected to the second supply line and spraying the heated fluid to the measurement object. The method of claim 3, wherein
The first nozzle and the second nozzle,
Low temperature tensioner, characterized in that arranged in a plurality of side by side in the cryogenic chamber, a plurality of injection holes are formed along the longitudinal direction in each lower portion. The method according to any one of claims 1 to 4,
And said fluid is liquid nitrogen and said heated fluid is nitrogen gas. The method according to any one of claims 1 to 4,
And a switching valve for selectively supplying the fluid to any one of the first supply line and the second supply line.

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