KR200301509Y1 - Test device of cryogenic calve - Google Patents

Abstract

The cryogenic valve test apparatus according to the present invention, in the cryogenic valve test apparatus for checking the air tightness of the cryogenic valve, the nozzle for measuring the leakage of the fluid in the state in which the flow of the fluid is blocked by the ball of the cryogenic valve Fluid supply unit for supplying a fluid to the cryogenic valve through; A cryogenic chamber provided with a liquefied gas supply unit supplying a liquefied gas in a cryogenic state through a nozzle to maintain the cryogenic valve in a cryogenic state by vaporization of the liquefied gas; A valve detachment chamber provided with a vise for supporting the cryogenic valve when the cryogenic valve is connected to or separated from the nozzle while being located at one side of the cryogenic chamber; A conveying apparatus for vertically moving the cryogenic valve in the valve detachment chamber and the cryogenic chamber, and moving the cryogenic valve from the valve detachment chamber to the cryogenic chamber, or from the cryogenic chamber to the valve detachment chamber; And a switch / display unit for displaying various switches and various kinds of information for controlling driving of the conveying device and other devices.

Description

Test device of cryogenic valve {Test device of cryogenic calve}

The present invention relates to an apparatus for testing cryogenic valves, and more particularly, to an apparatus for testing the airtightness of cryogenic valves at cryogenic temperatures safely.

In general, since all metals undergo tissue transformation in the cryogenic state, the necessity of a cryogenic valve capable of fully blocking the fluid and inherent function of fluid transport even if the tissue transformation occurs is emphasized.

In other words, the cryogenic valve installed in the cryogenic system is based on four-band dynamics such as valve structure mechanics, material mechanics, fluid mechanics, and thermodynamics. In addition, it must be installed in a real system and undergo a complete demonstration test. Cryogenic valves created under such a background can be called cutting-edge strategic products of the future, environment-friendly, and energy-saving type.

In particular, the airtightness of the cryogenic valve is a very important factor, and in order to test the airtightness of the cryogenic valve, it is preferable to test the temperature of the cryogenic valve by keeping it around the cryogenic state. It is necessary to cool below the vaporization temperature of.

However, at such cryogenic temperatures, thermal deformation of the materials can occur largely, and as a result, poor cryogenic valves or test equipment around them can be ruptured.

Thus, a person who tests the tightness of a cryogenic valve at cryogenic temperatures is exposed to the risks described above.

Accordingly, it is an object of the present invention to provide a device that can safely test the airtightness of cryogenic valves at cryogenic temperatures.

1 is a schematic view showing a test apparatus for a cryogenic valve according to an embodiment of the present invention,

2 is a view for explaining the test operation of the cryogenic valve using the gas supply apparatus in the cryogenic valve test apparatus according to an embodiment of the present invention,

3 is a flowchart illustrating a test process of a cryogenic valve according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1: test apparatus 2: conveying apparatus

3: rail 4a, 4b: piston

5: connecting member 6: support

7: Clamp 8: Clamp screw

9: cryogenic valve 10: connection

11: vise 12: door

13 temperature sensor 14 cover

20: valve removal chamber 30: ultra low temperature room

31: cryogenic tank 32: window

40: fluid supply part 41: gas control device

42 gas valve 43 pressure sensor

44: nozzle 45: outlet

46: discharge valve 50: liquefied gas supply unit

51 gas control device 52 gas valve

53: nozzle 54: outlet

60 switch / indicator

The present invention for achieving the above object, in the cryogenic valve test apparatus for checking the air tightness of the cryogenic valve, in order to measure the leakage of the fluid in the state in which the flow of the fluid is blocked by the ball of the cryogenic valve A fluid supply unit supplying a fluid to the cryogenic valve through the nozzle; A cryogenic chamber provided with a liquefied gas supply unit supplying a liquefied gas in a cryogenic state through a nozzle to maintain the cryogenic valve in a cryogenic state by vaporization of the liquefied gas; A valve detachment chamber provided with a vise for supporting the cryogenic valve when the cryogenic valve is connected to or separated from the nozzle while being located at one side of the cryogenic chamber; A conveying apparatus for vertically moving the cryogenic valve in the valve detachment chamber and the cryogenic chamber, and moving the cryogenic valve from the valve detachment chamber to the cryogenic chamber, or from the cryogenic chamber to the valve detachment chamber; And a switch / display unit for displaying various switches and various kinds of information for controlling driving of the conveying device and other devices.

At this time, the conveying apparatus, the rail is installed across the upper portion of the valve detachment chamber and the cryogenic chamber so as to horizontally move the cryogenic valve from the valve detachment chamber to the cryogenic chamber or from the cryogenic chamber to the valve detachment chamber; A first hydraulic device provided to allow the cryogenic valve to reciprocate by a piston to move horizontally along a rail; And a second hydraulic device provided to vertically move by a piston to vertically move the cryogenic valve.

The vises provided in the valve detachment chamber are driven by a third hydraulic device that moves the vises in the direction of vice versa and in the opposite direction.

In addition, it is preferable that a cryogenic tank for liquefied gas is provided below the cryogenic chamber.

In addition, one end of the nozzle to which the fluid is supplied is provided with a discharge port through which the fluid passed from the cryogenic valve is discharged, and it is preferable that a flow meter capable of measuring the amount of fluid leaked from the cryogenic valve is coupled to the outlet.

Gas nozzles for controlling the flow rate of the fluid and the liquefied gas and gas valves for opening and closing the inflow of the fluid and the liquefied gas are respectively provided on the respective nozzles, and the hydraulic pressure of the fluid can be measured on the nozzle for supplying the fluid. The pressure sensor is further provided, and one side of the cryogenic valve further includes a plurality of temperature sensors capable of measuring the temperature of the cryogenic valve.

In addition, both ends of the cryogenic valve is provided with clamps for clamping both ends of the cryogenic valve to move the cryogenic valve by the conveying device, the clamp is connected to the upper connection member connected to the piston through the support It is possible to move integrally with the piston movement.

In addition, the liquefied gas supplied from the liquefied gas supply unit is preferably liquid nitrogen, and the fluid supplied to the cryogenic valve through the nozzle is preferably a helium gas.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing a test apparatus for a cryogenic valve according to an embodiment of the present invention, Figure 2 is a test operation of a cryogenic valve using a gas supply device in the first apparatus of the cryogenic valve according to an embodiment of the present invention It is a figure for demonstrating.

1 and 2, the cryogenic valve test apparatus 1 according to an embodiment of the present invention, the fluid flow is blocked by the ball of the cryogenic valve (9) whether the fluid leaks or not A fluid supply unit 40 for supplying a fluid to the cryogenic valve 9 through the nozzle 44 for measurement; A cryogenic chamber 30 which is connected to a liquefied gas supply unit 50 for supplying a liquefied gas in a cryogenic state through a nozzle 53 to maintain the cryogenic valve 9 in a cryogenic state by vaporization of the liquefied gas; Located at one side of the cryogenic chamber 30, when the cryogenic valve 9 is connected to or separated from the nozzle 44, the vises 11 for supporting the cryogenic valve 9 are provided on the bottom surface. Valve removal chamber 20; The cryogenic valve (9) is moved vertically in the valve detachment chamber (20) and the cryogenic chamber (30), and the cryogenic valve (9) from the valve detachment chamber (20) to the cryogenic chamber (30), Or a transporting device (2) for horizontally moving from the cryogenic chamber (30) to the valve detachment chamber (20); And a switch / display unit 60 for displaying various switches and various kinds of information for controlling the driving of the conveying device 2 and other devices.

At this time, the fluid supplied from the fluid supply unit 40 is preferably helium gas, the liquid gas supplied from the liquefied gas supply unit 50 is preferably liquid nitrogen.

In other words, the present invention provides a valve desorption chamber for mounting or detaching the cryogenic valve 9 connected to the fluid supplied from the fluid supply part 40, for example, the nozzle 44 through which helium gas flows. (20), the liquid nitrogen supplied from the liquefied gas supply unit 50 is evaporated, the cryogenic chamber 30 and the cryogenic valve 9, the temperature of which is cooled to an extremely low temperature, for example, -196 ° C, and the cryogenic valve 9, the valve detachment chamber (20) moves up and down, or transfers the cryogenic valve (9) mounted in the valve detachment chamber (20) to the cryogenic chamber (30) (opposite, the cryogenic valve (9) in the cryogenic chamber (30) is valved). And a conveying apparatus 2 for conveying to the detachable chamber 20.

Hereinafter, each component of the test apparatus 1 of the cryogenic valve according to the embodiment of the present invention will be described in more detail.

As illustrated in FIG. 1, the conveying apparatus 2 may move horizontally from the valve detachment chamber 20 to the cryogenic chamber 30 through a wheel (not shown) mounted at a lower portion thereof. It lies on the rail (3) located at the top of the).

The conveying device 2 can be moved horizontally on the rail 3 by a first hydraulic device.

That is, the piston 4a is reciprocated horizontally from the hydraulic cylinder of the first hydraulic apparatus driven by the power supplied from the outside by the motor (not shown) of the first hydraulic apparatus to move the cryogenic valve 9 horizontally. You can.

A switch capable of controlling the driving of the first hydraulic device is provided in the switch / display section 60.

Moreover, the 2nd hydraulic apparatus which moves the cryogenic valve 9 vertically is built into the conveying apparatus 2, for example, and the piston 4b is incorporated in the hydraulic cylinder of a 2nd hydraulic apparatus.

Therefore, the piston 4b of the hydraulic cylinder can move up and down by the power supplied from the outside.

In addition, the lower end of the piston 4b has clamps 7 capable of clamping both ends of the cryogenic valve 9, and the cryogenic valve 9 mounted on the clamp 7 by tightening the ends of the clamp 7. Clamp screws 8, clamps 7 provided at the ends of the clamps 7 to fasten the clamps 7 through the fastening holes (not shown) of the clamps 7 so as not to fall off from the clamps 7. A pair of supports 6 joined at one end to the ends of the clamps 7 to support them vertically, a pair of supports 6 joined at one end to the ends of the clamps 7 and the piston 4a. The lower surface is provided with a connecting member 5 attached to the other end of the supports 6 and the upper surface attached to the piston 4a so as to be able to move integrally.

Further, the nozzle 45 penetrates the outer wall of the test apparatus 1 so that the fluid supplied from the fluid supply part 40 through the nozzle 44 can be discharged to the outside through the cryogenic valve 9. A discharge valve 46 for opening and closing the fluid passing through the cryogenic valve 9 is provided between the outer wall of the test apparatus 1 and the discharge port 45 of the nozzle 44. .

On the other hand, at the end of the outlet 45 is a flow rate meter (not shown) for detecting the amount of fluid passing through the cryogenic valve (9).

Meanwhile, the valve detachment chamber 20 clamps the door 12 and the cryogenic valve 9 provided outside the test apparatus 1 so as to insert or pull out the cryogenic valve 9 into the valve detachment chamber 20. A pair of vices 11 and a pair of vices 11 installed to erect the cryogenic valve 9 in a constant direction at the bottom of the valve desorption chamber 20 when clamping or releasing the clamping). In order to be able to move in the direction A (or vice versa) of 1, a moving device (not shown) of the vise 11 provided on the side or the back of the vises 11 is provided.

The moving device of the vise 11 is, for example, a hydraulic device (not shown) driven by power supplied from the outside, and its driving is controlled by a switch provided in the switch / display section 60.

On the other hand, the cryogenic chamber 30 has a cryogenic tank 31 in which liquid nitrogen supplied from the liquefied gas supply unit 50 at its bottom portion can be vaporized at an outlet 54 provided at the end of the nozzle 53, and an cryogenic valve. (9) is provided with a window (32) provided on the outside of the cryogenic chamber (30) in order to visually confirm the movement and to protect the outside from damage of the cryogenic or cryogenic valve (9).

The material of the window 32 may be made of ordinary transparent glass, but preferably made of tempered glass.

In the above-described configuration, the upper end portion of the test apparatus 1 is covered with the cover 14.

Meanwhile, gas control devices 41 and 51 for controlling the flow rates of helium gas and liquid nitrogen supplied from the fluid supply part 40 and the liquefied gas supply part 50 outside the cryogenic chamber 30 of the test apparatus 1, respectively. And gas valves 42 and 52 for opening and closing the flow of helium gas and liquid nitrogen are provided in the nozzles 44 and 53, respectively.

In addition, the nozzle 44 is provided with a pressure sensor 43 capable of measuring the hydraulic pressure of the helium gas in the nozzle 44 between the gas valve 42 and the outer wall of the cryogenic chamber 30.

The pressure measured by the pressure sensor 43 is displayed on the switch / display unit 60.

Next, the operation and effect of the cryogenic valve test apparatus 1 according to the embodiment of the present invention will be described below.

3 is a flowchart illustrating a test process of a cryogenic valve according to an embodiment of the present invention.

As shown in FIGS. 1 and 3, first, the cryogenic valve 9 is positioned between the vises 11 installed at the bottom of the valve detachment chamber 20.

Then, the vise 11 is moved in the direction A of FIG. 1 by operating a switch of the vise moving device (not shown) in the switch / display unit 60.

By moving the vise 11 in the A direction and operating the hydraulic cylinder switch of the second hydraulic device in the switch / indicator 60 while the cryogenic valve 9 is erected perpendicularly to the bottom surface, the conveying device 2 Hydraulic cylinder (not shown) is operated to cause the piston 4b to descend until the clamps 7 at the ends of the supports 6 can be positioned at both ends of the cryogenic valve 9.

Next, the clamps 7 are fastened to the clamp screw 8 so that the cryogenic valve 9 is clamped to the clamp.

In addition, in order to measure the temperature of the cryogenic valve 9, a temperature sensor 13 is attached to the upper, middle and lower portions of the cryogenic valve 9, respectively.

In addition, the fluid inlets at both ends of the cryogenic valve 9 are coupled to the ends of the nozzles 44, respectively.

In this case, the coupling between the fluid inlet of the cryogenic valve 9 and the nozzles 44 prevents fluid from leaking between the fluid inlet and the nozzle using a commonly known sealing member.

In this way, the cryogenic valve 9 is mounted on the clamps 7 and then the door 12 is closed.

Next, by operating the switch of the second hydraulic device in the switch / indicator 60, the piston 4a on which the cryogenic valve 9 is clamped is raised by a certain height.

After ascending a predetermined height in this manner, the piston 4a moves horizontally by driving the first hydraulic device by a normal automatic control device (not shown) or a manual switch built in the switch / display unit 60. The device 2 is moved along the rail 3 to the cryogenic chamber 30.

Thereafter, the second hydraulic device in the conveying device 2 is operated by a normal automatic control device (not shown) or a manual switch embedded in the switch / indicator 60 so that the cryogenic valve 9 is operated by the cryogenic chamber 30. Piston (4b) is lowered so as to be locked in the cryogenic tank (31).

Next, the gas valve 42 is opened to allow the fluid from the fluid supply part 40 to flow into the cryogenic valve 9 through the nozzle 44.

At this time, the cryogenic valve 9 is also in a closed state, and the discharge valve 46 at the outlet 45 is in an open state.

In addition, the liquid nitrogen introduced from the liquefied gas supply unit 50 by opening the gas valve 52 is vaporized at the outlet 54.

The temperature of the cryogenic tank 31 in which the cryogenic valve 9 is locked by the vaporized nitrogen gas is maintained at -196 ° C.

In this state, when the airtightness of the cryogenic valve 9 in the closed state is not maintained, the helium gas passes through the cryogenic valve 9 and passes through the outlet 45.

At this time, the amount of fluid leaked through a flow meter (not shown) connected to the outlet 45 is inspected.

In this way, the amount of fluid generated by inspecting the amount of fluid leaked through the flow meter or by submerging the outlet 45 in the water filled tank is detected.

Thus, the amount of leaked fluid can be measured with respect to the elapsed time, and in particular, when measured by a flow meter, the measured data can be entered into a conventional personal computer using a conventional interface and displayed graphically. have.

When the above-described test is completed, the cryogenic valve 9 can be separated from the test apparatus 1 by performing a process opposite to that of the cryogenic valve 9.

That is, the gas valves 42 and 52 are closed and the cryogenic valve 9 and the discharge valve 46 are opened to release the helium gas from the cryogenic valve 9 and the nozzle 44, and the liquid nitrogen supplies the liquefied gas supply unit 50. ) To prevent it from being released.

Next, by operating the switches of the first and second hydraulic devices, the piston 4b of the conveying device 2 is raised and then moved from the cryogenic chamber 30 to the valve desorption chamber 20, and then the piston 4b is moved. It is lowered so that the cryogenic valve 9 is lowered between the vises 11.

Thereafter, the switch of the vise moving device (not shown) in the switch / display section 60 is operated to move the vise 11 in the opposite direction to A in FIG.

Next, the cryogenic valve 9 and the nozzles 44 are removed while the door 12 is opened, and the clamp screw 8 is released to release the cryogenic valve from the clamps 7 clamped at both ends of the cryogenic valve 9. (9) Remove and take out.

At this time, the temperature sensor 13 is also removed together.

Although a test apparatus for a cryogenic valve according to an embodiment of the present invention has been described above, this is merely an example for describing the present invention and is not intended to limit the present invention.

That is, it will be appreciated by those skilled in the art that modifications and variations are possible in order to achieve the object of the present invention.

Therefore, the technical scope of the present invention will become clear by the following claims.

As described above, when measuring the airtightness of the cryogenic valve by the test apparatus of the cryogenic valve according to the present invention, the cryogenic valve can be moved from the valve detachment chamber in the room temperature state to the continuously sealed cryogenic chamber or vice versa. Can be.

Thus, the tester can eliminate the risk that can be caused by moving the cryogenic valve directly to the cryogenic tank.

Further, by using the conveying apparatus, the tester can easily move the cryogenic valve between the valve detachment chamber and the cryogenic chamber.

Claims (10)

In the cryogenic valve test apparatus for grasping the airtightness of the cryogenic valve, A fluid supply unit supplying a fluid to the cryogenic valve through a nozzle to measure whether the fluid is leaked in a state where the flow of the fluid is blocked by the ball of the cryogenic valve; A cryogenic chamber provided with a liquefied gas supply unit supplying a liquefied gas in a cryogenic state through a nozzle to maintain the cryogenic valve in a cryogenic state by vaporization of the liquefied gas; A valve detachment chamber provided with a vise for supporting the cryogenic valve when the cryogenic valve is connected to or separated from the nozzle while being located at one side of the cryogenic chamber; A conveying apparatus for vertically moving the cryogenic valve in the valve detachment chamber and the cryogenic chamber, and moving the cryogenic valve from the valve detachment chamber to the cryogenic chamber, or from the cryogenic chamber to the valve detachment chamber; And And a switch / display unit for displaying various switches and various kinds of information for controlling driving of the conveying device and other devices. The method of claim 1, The conveying device, A rail provided over the valve detachment chamber and the cryogenic chamber so as to horizontally move the cryogenic valve from the valve detachment chamber to the cryogenic chamber or from the cryogenic chamber to the valve detachment chamber; A first hydraulic device provided to allow the cryogenic valve to reciprocate by a piston to move horizontally along a rail; And a second hydraulic device provided to vertically move by a piston to vertically move the cryogenic valve. The method of claim 1, Vises provided in the valve detachment chamber is driven by a third hydraulic device for moving the vise in the direction of vice versa and vice versa, the cryogenic valve test apparatus, characterized in that vise the cryogenic valve. The method of claim 1, The cryogenic chamber test apparatus of the cryogenic valve, characterized in that the cryogenic tank is provided with a vaporized liquid gas. The method of claim 1, One end of the nozzle to which the fluid is supplied is provided with a discharge port through which the fluid passed from the cryogenic valve is discharged, and a cryostat coupled to the outlet is a flow meter capable of measuring the amount of fluid leaked from the cryogenic valve Test equipment. The method of claim 1, Gas nozzles for controlling the flow rate of the fluid and the liquefied gas and gas valves for opening and closing the inflow of the fluid and the liquefied gas are respectively provided on the respective nozzles, and the hydraulic pressure of the fluid can be measured on the nozzle for supplying the fluid. Cryogenic valve test apparatus, characterized in that the pressure sensor is further provided. The method of claim 1, One side of the cryogenic valve is a test device for a cryogenic valve, characterized in that it further comprises a plurality of temperature sensors that can measure the temperature of the cryogenic valve. The method according to claim 1 or 2, Both ends of the cryogenic valve are provided with clamps capable of clamping both ends of the cryogenic valve to move the cryogenic valve by a conveying device, and the clamp is connected to an upper connection member to which the piston is connected through a support to move the piston. Cryogenic valve test apparatus, characterized in that the movement is possible integrally. The method according to claim 1 or any one of claims 4 and 6, The liquefied gas is a test device for a cryogenic valve, characterized in that the liquid nitrogen. The method according to any one of claims 1 or 5 and 6, Fluid supplied to the cryogenic valve through the nozzle is a test device for a cryogenic valve, characterized in that helium gas.