KR100873791B1 - Quenching method and quenching device for manufacturing high pressure gas container - Google Patents

Abstract

The present invention relates to a quenching method and a quenching apparatus for producing a high pressure gas container.

Quenching method for producing a high pressure gas container of the present invention, the setting step of setting the gas container transferred to one side of the cooling furnace in a vertical state with the neck portion facing down; A cooling step in which the gas container in the vertical state is put into a cooling furnace filled with cooling water and cooled while the cooling water simultaneously contacts the inside and outside of the container; Consists of a withdrawal step of taking out the container cooled in the cooling step from the cooling furnace.

The quenching apparatus for manufacturing a high pressure gas container of the present invention includes a cooling furnace filled with cooling water; A central rotating shaft, the lower portion of which is located at the center of the cooling furnace, the upper portion protruding above the cooling furnace, and configured to rotate in the axial direction; The central axis of rotation is designed to move up and down in the axial direction, and consists of a lower fixing device for fixing the lower end of the container and an upper fixing device for fixing the upper end of the container, and moves the container up and down while fixing the upper and lower ends of the container. A plurality of container holding devices adapted to be made; A rotary loading device installed on one side of the cooling furnace so that the gas container, which is transported by the conveying roller, is turned downward so that the gas container is fixed to the container fixing device; It is composed of; a rotary discharging device which is installed on the other side of the cooling furnace so as to carry out the cooled gas container.

According to the present invention, it is possible to prevent the bending in the axial direction during the cooling of the gas container molded at a high temperature state, to increase the cooling rate, to remove bubbles generated on the surface of the gas container and to uniformly cool the cooling and the surface of the product. By doing so, it is possible to make a high-quality product with a higher durability of the high-pressure container.

Description

Quenching method and quenching device for the manufacture of high-pressure gas container {THE COOLING DEVICE AND METHOD FOR MAKING OF HIGH PRESSURE GAS CYLINDER}

1 is a plan view schematically showing a quenching apparatus for manufacturing a high pressure gas container of the present invention.

FIG. 2 is a cross-sectional view illustrating the A-A cross section of FIG. 1. FIG.

3 is a cross-sectional view showing the B-B cross section of FIG.

Figure 4 is a schematic diagram showing the internal moisture removal device of the quenching apparatus of the present invention.

Figure 5 is a schematic diagram showing a state of removing the water inside the gas container using the internal moisture removal device of the quenching apparatus of the present invention.

Figure 6 is a schematic diagram showing a driving state of the quenching device bottom fixing device of the present invention.

7 is a schematic view showing a quenching apparatus rotary ejection apparatus of the present invention.

Figure 8 is a view showing a rotary loading device of the present invention quenching apparatus.

9 is a view showing a state in which a cooling tube of the present invention quenching apparatus is installed.

10 is a view showing a rotating cylinder constituting a rotary loading device of the quenching apparatus of the present invention.

Figure 11 is a view showing a central rotating shaft of the present invention quenching apparatus, and an upper fixing device installed on the central rotating shaft.

Figure 12 is a view showing the installation state of the internal moisture removal device of the quenching apparatus of the present invention.

<Detailed Description of Major Symbols in Drawing>

10 gas container 20 tempering heat treatment furnace

100: cooling furnace 200: center rotation shaft

210: cooling pipe 220: hydraulic supply pipe

230: rotary drive motor 240: hydraulic supply device

250: rotating gear 300: container fixing device

310: lower fixing device 311: lower jig transfer cylinder

312: Lower jig 313: Lower jig transfer rail

320: upper fixing device 321: upper jig transfer cylinder

322: upper jig transfer rail 323: length adjustment rod

324: upper jig 400: rotary loading device

410: loading jig 420: container rotation cylinder

430: rotation axis of the loading device 440: fixed fixed cylinder

500: rotary ejection device 510: export fixing jig

520: export shaft 600: internal moisture removal device

610: Shanghai East cylinder 620: Horizontal rotating cylinder

630: air spray nozzle 700: agitator

710: stirring motor 720: propeller

730: stirring transfer pipe 800: take-out roller

900: Import roller

The present invention relates to a quenching method and a quenching apparatus for producing a high pressure gas container.

In general, the high-pressure gas container is manufactured by cutting an iron plate and coating the film, then forming a cup in a press, and then forming a head by using a spinning machine, or forming a cylindrical pipe by a spinning machine.

The method of manufacturing such a gas container has been proposed by the present inventors as Korean Patent Application Laid-Open No. 2001-0094681 "Method of manufacturing a high pressure gas container by a deep drawing ironing method".

On the other hand, since the container at the time of processing with such a spinning machine is a high temperature state, after a spinning process is completed, heat processing (quenching, Quenching) is performed.

In the conventional heat treatment method, a gas container moving along a transfer rail is cooled in a cooling furnace filled with cooling water while the body of the gas container maintains a parallel direction of the water surface, that is, the gas container is introduced into the cooling furnace by a horizontal charging method. Has been made.

However, when the gas container is introduced into the cooling furnace by the horizontal charging method, the part in contact with the cooling water rapidly contracts while being cooled, while the upper part that is not in contact with the water is heated so that one side of the gas container is axially oriented. This caused a problem that the gas container is bent.

In addition, there was a problem that the physical properties of the inner and outer surfaces of the product is not uniform because the inside and outside of the gas container is not cooled at the same time.

In addition, after the end of the quenching and before the second heat treatment before the second heat treatment, the gas inside the container must be removed, in which case it takes a long time to dry inside, the heavy gas container upside down to remove the internal moisture was also inconvenient .

In particular, there was also a problem that the product is defective in the area where the moisture remains in the gas container during the second heat treatment because the moisture removal is not perfect.

In addition, in the conventional quenching method as described above, a water blowing method was used to rapidly cool the bubble layer generated around the gas container, but there was also a problem in that the bubble layer removal rate was not high.

The quenching method and the quenching apparatus for manufacturing a high pressure gas container of the present invention is intended to solve the above problems, the purpose of preventing the warp in the axial direction by input to the cooling furnace in the vertical charging method in quenching the gas container.

In addition, there is a purpose to uniformize the physical properties of the inner and outer surfaces of the product by injecting the gas container in the cooling water passage with the neck portion facing downward, the inner and outer surfaces of the gas container in contact with the cooling water at the same time.

In addition, after quenching is finished, there is also a purpose to smoothly remove the water in the gas container by lifting the gas container introduced into the cooling furnace and blowing air at a high pressure inside the container.

In addition, by using two stirrers using a propeller to collide two streams of water to form a vortex of a rotating form and then supply the vortex to the gas container to increase the bubble layer removal rate, and to uniformly cool the gas container throughout There is also.

The present invention relates to a quenching method and a quenching apparatus for producing a high pressure gas container.

In the quenching method and the quenching apparatus for manufacturing a high pressure gas container of the present invention, the gas container is charged vertically into a cooling furnace and cooled to prevent bending in the axial direction, and to maintain uniform physical properties of the inner and outer surfaces.

In addition, in the vertical charging, the gas container was charged with the neck facing downward to allow natural drainage when lifted from the cooling furnace.

In addition, the high pressure air was blown through the neck of the lifted gas container so that the internal moisture can be removed as much as possible.

In addition, two water streams were collided using two agitators provided with a propeller, and the water streams were blown into the gas container to increase the bubble layer removal rate on the surface of the gas container, and to make the cooling uniform.

To this end, the quenching method for producing a high-pressure gas container of the present invention, the setting step of setting the gas container transferred to one side of the cooling furnace in a vertical state with the neck portion facing down; A cooling step in which the gas container in the vertical state is put into a cooling furnace filled with cooling water and cooled while the cooling water simultaneously contacts the inside and outside of the container; Consists of a withdrawal step of taking out the container cooled in the cooling step from the cooling furnace.

In addition, after the withdrawal step in the above process by blowing high-pressure air to the neck portion of the container to remove the moisture to remove the water inside the container; may be configured by adding.

In addition, the cooling step may be configured to suppress the generation of bubbles on the surface of the product by spraying the vortex in the gas container in the gas container introduced into the cooling furnace.

High pressure gas container quenching apparatus of the present invention for the above quenching method, the cooling furnace is filled with cooling water; A central rotating shaft, the lower portion of which is located at the center of the cooling furnace, the upper portion protruding above the cooling furnace, and configured to rotate in the axial direction; The central axis of rotation is designed to move up and down in the axial direction, and consists of a lower fixing device for fixing the lower end of the container and an upper fixing device for fixing the upper end of the container, and moves the container up and down while fixing the upper and lower ends of the container. A plurality of container holding devices adapted to be made; A rotary loading device installed on one side of the cooling furnace so that the gas container, which is transported by the conveying roller, is turned downward so that the gas container is fixed to the container fixing device; It is composed of; rotary ejection device is installed on the other side of the cooling furnace so as to carry out the cooled gas container.

In addition, the internal moisture removal device is installed on one side of the cooling furnace so as to be horizontally rotatable, and may be configured to supply high pressure air through the neck of the gas container vertically raised in the cooling furnace to remove moisture in the gas container.

In addition, a cooling tube corresponding to each vessel fixing device is installed at the bottom of the central rotating shaft, and two tubes having a stirring shaft installed therein are merged into one, and an agitator is installed at the lower end of the cylinder. Thus, the vortex may be supplied to the surface of the gas container introduced into the cooling furnace to rapidly cool the surface bubble layer while removing the surface bubble layer.

Prior to the detailed description of each component and operation of the present invention, the terms or words used in the present specification and claims should not be construed as being limited to the ordinary or dictionary meanings, and the inventors will best understand their own invention. It should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention on the basis of the principle that the concept of terms can be properly defined in order to explain the method.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, a quenching method and a quenching apparatus for manufacturing a high pressure gas container according to the present invention will be described in detail with reference to the accompanying drawings.

First, the quenching process for manufacturing a high pressure gas container of the present invention will be described.

Step 1: setting step

Set the gas container transferred to the loading roller after the spinning is completed by standing it vertically with the neck of the gas container facing down.

Step 2: Cooling Step

In the setting step, the gas container, which is standing vertically, is introduced into a cooling furnace filled with cooling water to cool the cooling water while simultaneously contacting the inside and outside of the container.

In the cooling step, it is preferable to spray the vortex in the gas container introduced into the cooling furnace to suppress the generation of bubbles on the surface of the product.

Step 3: Withdrawal Step

The cooled container is removed from the cooling furnace in the cooling stage.

After the withdrawal step is completed by blowing high pressure air to the neck of the container to remove the moisture in the container; can be further proceeded.

Referring to the quenching apparatus for manufacturing a high-pressure gas container of the present invention to continuously proceed to the above quenching process as follows.

1 is a schematic plan view of the quenching apparatus for manufacturing a high pressure gas container of the present invention, which shows that the quenching method for manufacturing a high pressure gas container of the present invention can be performed in one apparatus.

Referring to Figure 1, the central rotating shaft 200 is installed to be rotatable in the center, it can be seen that the container fixing device 300 and the cooling pipe 210 is installed in four circumferences of the central rotating shaft 200. have.

In the figure, the upper side of the cooling furnace 100, the loading roller 900 and the rotary loading device 400 subsequent to the loading roller 900 is installed.

That is, the gas container 10 moved in a horizontal form on the loading roller 900 is a container fixing device 300 in the vertical direction with the neck of the gas container 10 facing down by the rotary loading device 400. Will be fixed on.

In the drawing, the right side of the cooling furnace 100 is provided with a rotary discharging device 500 and a carrying roller 800.

That is, after the cooling is completed, the gas container 10 is laid down in a horizontal form by the rotary discharging device 500 lifted from the cooling furnace 100, and the next process is continuously carried out by the tempering heat treatment process by riding the discharging roller 800 ( 20).

On the other hand, the stirring device 700 is shown on the left side of FIG.

As shown in the drawing, the stirring feed pipe 730 constituting the stirring device 700 is a combination of two pipes, each of which is equipped with a propeller 720, the end of the stirring feed pipe 730 is a container fixing device 300 It is installed in the direction toward the cooling tube 210 from the lower portion of the cooling tube 210 is installed in the lower portion of the).

That is, the vortex formed in the stirring feed pipe 730 is directed from the lower portion of the cooling tube 210 to the upper portion to supply the vortex to the gas container 10 located in the internal space of the cooling tube 210.

On the other hand, the lower side of Figure 1 is an internal moisture removal device 600 is shown.

The internal moisture removing device 600 is configured to remove moisture from inside by blowing air at a high pressure into the neck of the gas container 10 lifted from the cooling furnace 100.

The above-described devices are continuously progressed while the central rotating shaft 200 installed in the center rotates.

That is, in the upper portion in the upper portion of the container lying horizontally after entering the rotation is fixed to the container fixing device 300 with the neck portion facing down, the container fixing device 300 is fixed gas container 10 When the gas container 10 is immersed in the coolant to the cooling tube 210 position, the primary cooling proceeds.

At this time, the cooling efficiency may be increased by using the stirring apparatus 700 and the cooling tube 210 as shown in the drawing.

When the central rotating shaft 200 is rotated 90 degrees counterclockwise in the state of completion of the first cooling process, another gas container 10 moves on the loading roller 900 and then the first process through the same process as described above. After cooling, the primary cooled gas container 10 is subjected to a secondary cooling process while immersed in cooling water.

When the gas container 10 of which secondary cooling is completed reaches the lower position of FIG. 1 according to the rotation of the central rotating shaft 200, the container fixing device 300 lifts the gas container 10 immersed in the cooling water.

At this time, since the neck portion of the gas container 10 naturally faces downward, the cooling water is drained.

In addition, when the internal moisture removal device 600 is additionally installed, the air injection nozzle 630 of the internal moisture removal device 600 blows high-pressure air into the neck of the gas container 10 to obtain moisture. It will be completely removed.

When the water in the gas container 10 is removed, the central rotating shaft 200 is rotated again in the counterclockwise direction, the container is laid horizontally on the export roller 800 by the rotary export device 500, and the next process is tempered. It is transferred to the heat treatment furnace (20).

2 is a cross-sectional view taken along the line A-A of FIG. 1, and FIG. 3 is a cross-sectional view taken along the line B-B of FIG. 1.

2 and 3, the rotary drive motor 230 is installed, it can be seen that the rotary gear 250 that is operated by the rotary drive motor 230 is installed.

That is, power is transmitted from the rotary drive motor 230 to the rotary gear 250, and the central rotation shaft 200 is rotated by the operation of the rotary gear 250.

In addition, since the jig is provided around the lower portion of the central rotation shaft 200, the central rotation shaft 200 is not detached.

The hydraulic pressure supply device 240 and the hydraulic pressure supply pipe 220 shown in the drawings are pipes for supplying hydraulic pressure to the upper fixing device 320 and the lower fixing device 310 constituting the container fixing device 300.

The vessel fixing device 300 and the cooling tube 210 are installed to correspond to each other on the upper and lower sides of the central rotation shaft 200.

In addition, the container fixing device 300 can be seen that is divided into the upper fixing device 320 and the lower fixing device 310 is installed on the central rotating shaft (200).

The upper fixing device 320 has an upper jig 324 for fixing the gas container 10 and a length adjusting rod 323 to which the upper jig 324 is fixed.

The length adjusting rod 323 was configured to allow the length adjustment using a hydraulic cylinder or the like.

The length adjusting rod 323 is to be moved along the upper jig transfer rail 322, it is moved up and down by the upper jig transfer cylinder 321 installed behind the upper jig transfer rail 322.

The lower fixing device 310 has a lower jig 312 for fixing the lower end of the container, a lower jig transfer rail 313 for moving the lower jig 312, and a lower jig transfer cylinder 311 for moving the lower jig 312. ) To move up and down.

As shown in FIG. 6, the lower jig 312 is rotatable from a frame fixing the lower jig 312, so that the gas container 10 is adapted to the operation of the rotary loading device 400 and the rotary discharge device 500. It is easy to carry out and carry out of rotation.

As described above, the lower fixing device 310 and the upper fixing device 320 respectively have an upper jig feed rail 322, a lower jig feed rail 313, and an upper jig feed cylinder 321, a lower jig feed cylinder 311. Each can move up and down by this.

That is, the container fixing device 300 can fix and separate the gas container 10, move the gas container 10 downward, and put the gas container 10 in the cooling furnace 100 or lift it from the cooling furnace 100. It is supposed to be.

1 and 2, the rotary loading device 400 is shown.

The rotary loading device 400 is configured to hold the gas container 10 transferred in the horizontal direction vertically on the loading roller 900 to be fixed to the container fixing device 300.

To this end, it is equipped with a loading fixing jig 410 that can be engaged with the top and bottom of the gas container 10 moving in the loading roller 900.

As shown in FIG. 8, the loading fixing jig 410 has a pressure on the upper and lower portions of the gas container 10 while being rotated by the operation of the loading fixing cylinder 440 while being installed on the upper and lower portions of the frame. Is applied to fix the gas container 10.

In addition, the loading fixing jig 410 is fixed to the loading device rotary shaft 430, the loading device rotary shaft 430 is to be rotated by the container rotation cylinder 420.

That is, the fixing and separation of the gas container 10 by the loading fixed cylinder 440 and the loading fixing jig 410, the rotation of the gas container 10 to the loading device rotating shaft 430 and the container rotating cylinder 420 It is a structure made by.

In the configuration of the rotary discharging device 500 of the present invention, as shown in FIGS. 7 and 13, the unloading fixing jig 510 operated by a cylinder presses both sides of the gas container 10 to press the gas container 10. And a carrying out rotation shaft 520 operated by a hydraulic cylinder to rotate the carrying out fixing jig 510.

At this time, when the discharge shaft 520 rotates, the container fixing device 300 is in a state in which the fixing of the gas container 10 is released.

An internal moisture removal device 600, which is an additional component of the present invention, is shown in the figures of FIGS. 2, 4, 5, and 12.

The main configuration of the internal moisture removal device 600 is a horizontal rotating cylinder for rotating the air spray nozzle 630, the air spray nozzle 630 to supply a high pressure gas therein through the neck portion of the gas container 10 in a horizontal direction. 620, the shankdong cylinder 610 for moving the air spray nozzle 630 up and down.

In addition, a frame, a bracket, an air supply device, etc. to which the air spray nozzle 630 is connected are added.

This internal moisture removal device 600 is capable of rotating in the horizontal direction as shown in Figure 4, as shown in the side view of Figure 5 air spray nozzle 630 by the operation of the Shanghai copper cylinder 610 The neck of the gas container 10 is moved up and down.

That is, the operation sequence of the internal moisture removing device 600 is rotated in the horizontal direction by the horizontal rotation cylinder 620, the air spray nozzle 630 by the Shanghai copper cylinder 610 is the neck portion of the gas container 10 It is in order of being located.

An additional component of the present invention, agitation device 700, is shown in FIGS.

The main configuration of the stirring device 700 is a propeller 720 and a propeller installed in a portion divided into two stirring tube 730 and the stirring transfer tube 730 in the form of two cylindrical tubes combined into one; It consists of a stirring motor 710 for the rotation of (720).

At this time, one end of the stirring feed pipe 730 is located in the lower cooling pipe 210.

According to the present invention, in the quenching of the gas container, it is possible to prevent the body of the container from being bent relative to the axial direction by injecting it into the cooling furnace by the vertical charging method.

In addition, as the neck of the gas container is placed downward, the liquid is introduced into the cooling water path, and the inner and outer surfaces of the gas container are in contact with the cooling water at the same time, thereby making the physical properties of the inner and outer surfaces of the product uniform.

In addition, after the end of the quenching to lift the gas container introduced into the cooling furnace by blowing air at a high pressure inside the container can be removed to remove moisture in the gas container.

In addition, by using two stirrers using a propeller to form a vortex of a rotating form by colliding two streams of water and supplying the vortex to the gas container to increase the bubble layer removal rate, it is possible to cool the gas container uniformly throughout Will be.

Claims (6)

delete delete delete In the quenching apparatus for manufacturing a high pressure gas container, A cooling furnace 100 in which cooling water is filled; A central rotary shaft 200 having a lower portion positioned in the center of the cooling furnace 100 and an upper portion protruding above the cooling furnace 100 and configured to rotate in an axial direction; It is to be able to move up and down in the axial direction of the central rotation shaft 200, and consists of a lower fixing device 310 for fixing the lower end of the container and the upper fixing device 320 for fixing the upper end of the container, A plurality of container fixing devices 300 configured to move the container up and down while fixing the upper and lower ends of the container; Rotating loading device 400 installed on one side of the cooling furnace 100 to fix the gas container 10 to the container fixing device 300 by raising the gas container 10 transported by the transfer roller downward. )Wow; And a rotary discharge device 500 installed at the other side of the cooling furnace 100 so as to carry out the cooling of the gas container 10 completed. Quenching device for manufacturing high pressure gas container. The method of claim 4, wherein The internal moisture removal device 600 is installed on one side of the cooling furnace 100 so as to be horizontally rotatable, so that the high pressure air is supplied through the neck of the gas container 10 vertically raised in the cooling furnace 100 to supply the gas container. (10) characterized in that to remove the moisture inside, Quenching device for manufacturing high pressure gas container. The method of claim 4, wherein Cooling pipes 210 corresponding to each container fixing device 300 are installed below the central rotating shaft 200, Each of the two tubes with agitator shafts installed inside of them are joined together, and the agitator 700 is located at the lower end of the cylinder. It is characterized in that the vortex is supplied to the surface of the gas container 10 introduced into the cooling furnace 100 to rapidly cool while removing the surface bubble layer. Quenching device for manufacturing high pressure gas container.

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