KR102302657B1 - Insulation workshop moisture removal device - Google Patents

Abstract

The present invention relates to an insulation workshop moisture removal apparatus, comprising: a chamber (10) in which a storage tank (t) for attachment of an insulating tape (p) is disposed therein; a dehumidifier (20) for removing moisture inside the chamber (10); and a positive pressure device (30) for maintaining an internal pressure of the chamber (10) higher than an external pressure. According to the present invention, the inside of the chamber is maintained at a positive pressure, the moisture inside the chamber is removed, and the moisture is prevented from being included in the insulating tape attached to the storage tank. Therefore, there is an advantage that the insulating tape can be firmly attached to the outer surface of the storage tank.

Description

Insulation workshop moisture removal device

The present invention relates to a moisture removal device for an insulation workshop, and more particularly, to a moisture removal device for an insulation workshop for removing moisture during an insulation operation of wrapping an insulating tape in a cryogenic storage tank.

Cryogenic storage tank refers to equipment that transports and stores oxygen, nitrogen, argon, carbonic acid, nitrous oxide and natural gas in a liquid state with a critical temperature of -50°C or less. Such equipment is used to vaporize the liquefied gas with a built-in vaporizer or a separately installed vaporizer to supply the gaseous gas at a predetermined pressure, temperature, and flow rate.

Most gases that exist in the gaseous state at room temperature are liquefied at temperatures above -40°C, but cryogenic gases such as helium, hydrogen, neon, nitrogen, oxygen, argon, and methane can only be liquefied when they fall below -150°C.

And, since the liquefied gas filled in the cryogenic storage tank filled with vacuum is in a cryogenic state of -150℃ or less, a material that does not cause low-temperature brittleness is used as the material of the storage tank in order to prevent a rise in the storage tank pressure due to heat needle from the outside. and insulate to ensure vacuum.

An example for thermal insulation of storage tanks is the insulation insulation method. Insulation insulation method is an insulation method that greatly reduces radiant heat coming into the inner tank from the outside by winding an insulation tape around the outer periphery of the storage tank to reduce the temperature of radiant heat coming from the outside.

However, when there is moisture in the process of winding the insulating tape around the outer periphery of the storage tank, the adhesion of the insulating tape is not complete, and if the adhesive force of the insulating tape is not complete, the vacuum degree is lowered.

Registered Patent Publication No. 0910806 (Registered on July 29, 2009)

The present invention has been devised to solve the above problems, and an object of the present invention is to provide an insulation workshop moisture removal device that removes moisture inside the insulation workshop and increases the adhesion of the insulation tape by maintaining the internal pressure higher than the external pressure will do

In accordance with an embodiment of the present invention for solving the above problems, an apparatus for removing moisture in an insulation workshop includes a chamber in which a storage tank for attaching an insulating tape is disposed, a dehumidifier for removing moisture in the chamber, and a pressure inside the chamber It includes a positive pressure device that maintains the pressure above the external pressure.

In addition, the insulation workshop moisture removal device is provided with a nitrogen purge for purging nitrogen into the chamber, a detection means for detecting the internal state of the chamber, and a controller for controlling the internal state of the chamber by receiving the information detected by the detection means further includes

The detecting means includes a temperature measuring device for measuring the temperature inside the chamber, a humidity measuring device for measuring the humidity inside the chamber, and a pressure measuring device for measuring the pressure inside the chamber.

The dehumidifier is disposed outside the chamber and primarily dehumidifies the inside of the chamber and introduces low-humidity air into the chamber, and an external dehumidifier disposed inside the chamber and secondarily located inside the chamber and an internal dehumidifier to remove the two or more external dehumidifiers.

In addition, the insulation workshop moisture removal device further includes a heating device for heating the storage tank inside the chamber, the storage tank is a cryogenic storage tank for storing the cryogenic liquefied gas filled.

In addition, the insulation workshop water removal device is installed on the bottom surface of the chamber, and supports both sides of the storage tank so that the storage tank is spaced apart from the bottom surface of the chamber by a predetermined distance. A driving motor that rotates and the insulating tape is wound, and the insulating tape is released by rotation and further includes a rotating roller for winding the insulating tape on the outer surface of the storage tank, wherein the insulating tape is made of an aluminum film on one side , the opposite side becomes a heat insulating film, and surrounds the outer surface of the storage tank so that the aluminum film is exposed to the outside, and the heat insulating tape passes through the heating device to surround the outer surface of the storage tank in a heated state.

The embodiment of the present invention maintains the inside of the chamber at positive pressure and removes moisture from the inside of the chamber to prevent moisture from being contained in the insulating tape attached to the storage tank so that the insulating tape can be firmly attached to the outer surface of the storage tank. has the effect of

Further, in another embodiment of the present invention, the interior of the chamber is primarily dehumidified with an external dehumidifier to introduce air with low humidity into the chamber, and secondly, the internal dehumidifier is driven to remove moisture located inside the chamber. Since the internal moisture is minimized and the external moisture is prevented from flowing into the chamber by maintaining the inside of the chamber at positive pressure, there is an effect that the insulating tape can be firmly attached to the outer surface of the storage tank.

In addition, another embodiment of the present invention operates a heating device to heat the outer surface of the storage tank and wind the insulating tape on the outer surface of the storage tank, so that moisture is removed around the storage tank and the insulating tape is wet with moisture. This has the effect of allowing the insulation tape to be firmly attached to the outer surface of the storage tank.

In another embodiment of the present invention, since the insulating tape passes through the heating device and the superheated insulating tape is attached to the outer surface of the storage tank, moisture from the storage tank and the insulating tape is removed, and the adhesive force is increased. can be expected

1 is a block diagram showing an insulation workshop moisture removal device according to an embodiment of the present invention.
2 is a cross-sectional view showing an insulating tape applied to an embodiment of the present invention.
3 is a block diagram showing an insulation workshop moisture removal device according to another embodiment of the present invention.
4 is a block diagram showing an insulation workshop moisture removal device according to another embodiment of the present invention.
5 is a block diagram showing a heating device according to another embodiment of the present invention.
6 is a block diagram showing an application example of another embodiment of the present invention.
7 is a view showing a method of winding the insulating tape on the storage tank according to another embodiment of the present invention.

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

1 is a block diagram showing an insulation workshop moisture removal device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing an insulating tape applied to an embodiment of the present invention.

As shown in FIG. 1 , the insulation workshop moisture removal device (hereinafter, referred to as 'water removal device') 1 according to an embodiment of the present invention includes a chamber 10, a dehumidifier 20 and a positive pressure device 30. includes The water removal device 1 according to the embodiment maintains the inside of the chamber 10 at a positive pressure and removes the water inside the chamber 10 to solve the problem that the insulation tape p attached to the storage tank t gets wet. do.

A storage tank (t) for attaching the insulating tape (p) is disposed inside the chamber (10). Chamber 10 is an insulation workshop.

The storage tank (t) is a cryogenic storage tank for storing and charging cryogenic liquefied gas. The storage tank (t) may be made of any one of 9% Ni steel, Al alloy, austenitic stainless steel and high manganese steel, which is a material that does not cause low-temperature brittleness.

The storage tank (t) secures the insulation performance by winding the insulating tape (p) on the outer surface in multiple layers to reduce the radiant heat coming into the inner tank from the outside and reduce heat transfer by conduction and convection. That is, the insulating tape (p) prevents conduction, convection, and radiation of heat so that the liquefied gas filled in the storage tank (t) maintains an ultra-low temperature state. The liquefied gas filled and stored in the storage tank t may be LNG gas, liquid hydrogen, liquid nitrogen, liquid argon, liquid oxygen, or the like.

Referring to FIG. 2 , the insulating tape (p) has one side made of an aluminum material film, the other side is a heat insulating film, and the outer surface of the storage tank (t) is wound in multiple layers so that the aluminum material film is exposed to the outside, the storage tank The outer surface of (t) is covered. The insulating film blocks heat to prevent conduction and convection of heat, and the aluminum film plays a role in reducing the radiant heat entering the inner tank from the outside by reflecting light.

The insulating tape (p) may be attached to the outer surface of the storage tank (t) in the process of winding on the storage tank (t) by including an adhesive layer on the insulating film.

In the chamber 10, the storage tank (t) is supported by the support bars (3a, 5a) protruding from the support bars (3, 5) on both sides of the center of both sides of the storage tank (t) to be predetermined from the bottom surface of the chamber (10). are spaced apart from each other. In addition, the support bars (3a, 5a) can be rotated to rotate the storage tank (t). The rotation of the support bars 3a and 5a may be performed by operating the driving motor 7 connected to the support bars 3a and 5a.

As the storage tank (t) is rotated, the insulating tape (p) wound on a rotating roll (not shown) is released and may be wound on the outer surface of the storage tank (t). The speed at which the support bars 3a and 5a are rotated and the speed at which the rotary roll is rotated may be the same so that the insulating tape p is tensionably wound on the outer surface of the storage tank t.

The dehumidifier 20 is for removing moisture inside the chamber 10 . The dehumidifier 20 may be disposed outside the chamber 10 and may be connected to the inside of the chamber 10 through a pipe to discharge moisture inside the chamber 10 to the outside.

The positive pressure device 30 is for maintaining the internal pressure of the chamber 10 higher than the external pressure. The positive pressure device 30 is disposed outside the chamber 10 and is connected to the inside of the chamber 10 by a pipe to make the internal pressure of the chamber 10 a positive pressure. That is, the positive pressure device 30 makes the pressure inside the chamber 10 slightly higher than atmospheric pressure so that external air does not flow into the inside of the chamber 10 .

When the internal pressure of the chamber 10 is made a pressure slightly higher than atmospheric pressure, external air containing more moisture than the internal does not flow into the interior of the chamber 10 , so that moisture does not flow into the interior of the chamber 10 . Therefore, when only the moisture inside the chamber 10 is removed, the insulating tape p does not contain moisture, so that the insulating tape p is firmly attached to the outer surface of the storage tank t.

The insulation workshop water removal device 1 further includes a nitrogen purge 40 , a detection means 50 and a controller 60 .

The outer surface of the storage tank (t) to which the insulation tape (p) is attached is strong and clean. The nitrogen purge 40 purifies the inside of the chamber 10 with nitrogen to clean the inside of the chamber 10, thereby strengthening the adhesion between the outer surface of the storage tank (t) and the insulating tape (p). Freon gas may be injected into the chamber 10 instead of nitrogen gas.

The detection means 50 detects the internal state of the chamber 10 , for example, the detection means 50 detects the internal pressure, temperature, and humidity of the chamber 10 . To this end, the detection means 50 is a thermometer 51 for measuring the temperature inside the chamber 10, a hygrometer 53 for measuring the humidity inside the chamber 10, and the pressure inside the chamber 10 It includes a pressure gauge (55).

The controller 60 receives the information detected by the detection means 50 to control the internal state of the chamber 10 . The controller 60 operates the dehumidifier 20 to remove moisture inside the chamber 10 , operates the positive pressure device 30 to maintain the internal pressure of the chamber 10 higher than the external pressure, and the chamber 10 . maintains the internal temperature within the set temperature range.

The controller 60 operates the dehumidifier 20 to remove moisture inside the chamber 10, and then operates the positive pressure device 30 to maintain the internal pressure of the chamber 10 higher than the external pressure of the dehumidifier 20. It is possible to stop the operation and operate only the positive pressure device 30 . Alternatively, the controller 60 operates the dehumidifier 20 to remove moisture inside the chamber 10 while purging nitrogen inside the chamber 10 to make the inside of the chamber 10 a clean environment. 10) When the internal moisture is completely removed, the positive pressure device 30 may be operated to maintain the internal pressure of the chamber 10 higher than the external pressure. Alternatively, the controller 60 may operate the positive pressure device 30 to maintain the inside of the chamber 10 at positive pressure, and operate the dehumidifier 20 to remove moisture inside the chamber 10 . In this process, the internal temperature of the chamber 10 may be maintained at a constant temperature using a temperature control unit (not shown) of the chamber itself.

In addition, the controller 60 controls the humidity, temperature, pressure, etc. of the chamber 10 based on the state information inside the chamber 10 measured by the humidity gauge 53 , the temperature gauge 51 and the pressure gauge 55 . You can control the internal state. The automatic control through the controller 60 may be preset by the user.

The moisture removal method of the insulation workshop using the moisture removal device of the above embodiment maintains the inside of the chamber 10 at positive pressure and removes the moisture inside the chamber 10, and the insulation tape (p) attached to the storage tank (t) By preventing the inclusion of moisture in the insulation tape (p) so that it can be firmly attached to the outer surface of the storage tank (t).

3 is a block diagram showing an insulation workshop moisture removal device according to another embodiment of the present invention.

As shown in FIG. 3 , the insulation workshop moisture removal device 1-1 according to another embodiment of the present invention includes a plurality of dehumidifiers 20, 20-1, and 20-2 in comparison with one embodiment. There is a difference.

The dehumidifier 20 includes external dehumidifiers 20 and 20 - 1 installed outside the chamber 10 and an internal dehumidifier 20 - 2 installed inside the chamber 10 .

The external dehumidifiers 20 and 20-1 are installed outside the chamber 10 to discharge the air inside the chamber 10 to the outside to primarily dehumidify the inside of the chamber 10, and to supply low humidity air to the chamber 10 ) into the interior. The internal dehumidifier 20-2 is installed inside the chamber 10, and when the external dehumidifiers 20 and 20-1 primarily dehumidify the inside of the chamber 10, it is secondarily installed inside the chamber 10. Remove the moisture located.

Two or more external dehumidifiers 20 and 20 - 1 may be installed outside the chamber 10 for rapid dehumidification inside the chamber 10 . For example, the two external dehumidifiers 20 and 20 - 1 are installed at positions far from each other so that the air inside the chamber 10 can be quickly discharged to the outside.

The operation of the external dehumidifiers 20 and 20-1 and the internal dehumidifier 20-2 can be controlled by the controller 60 receiving the information measured by the humidity measuring device 53 by determining the internal state of the chamber 10. have.

In the case of another embodiment, the controller 60 sequentially drives the external dehumidifiers 20 and 20 - 1 and the internal dehumidifier 20 - 2 to remove the moisture inside the chamber 10 , the positive pressure device 30 . And by driving the nitrogen purge 40, the inside of the chamber 10 can be implemented in a clean state without moisture and foreign substances. In addition, the controller 60 sequentially drives the external dehumidifiers 20 and 20-1 and the internal dehumidifier 20-2 in a state in which the positive pressure device 30 is driven to remove moisture inside the chamber 10 and Nitrogen is purged into the chamber 10 to make the interior of the chamber 10 clean.

In this state, the driving motor 7 is driven to rotate the storage tank t and the rotating roller (refer to reference numeral 70 in FIG. 3 ) wound with the insulating tape p is rotated while rotating the insulating tape on the outer surface of the storage tank t. (p) can be wound.

In this process, the rotating roller 70 moves in the longitudinal direction of the storage tank t so that the insulating tape p can be uniformly wound multiple times on the outer surface of the storage tank t. It can be supplied while unwinding the insulation tape (p).

To this end, the rotary roller 70 is movably installed on the transfer rail 80 and moves along the transfer rail 80 at a low speed to supply the insulating tape p to the storage tank t. Movement of the rotary roller 70 on the transfer rail 80 can be implemented using various mechanisms such as a motor or a hydraulic cylinder.

The controller 60 drives the driving motor 7 and the rotating roller 70 when the state inside the chamber 10 reaches the set condition to wind the insulating tape p on the outer surface of the storage tank t. It can be done automatically. For example, the setting condition may be a state in which the moisture inside the chamber 10 is 1% or less. These setting conditions can be reset as needed.

The moisture removal method of the insulation workshop using the moisture removal device of the other embodiment described above is to first dehumidify the inside of the chamber 10 with an external dehumidifier (20, 20-1), so that air with low humidity is introduced into the chamber (10). and secondly driving the internal dehumidifier 20 - 2 to remove moisture located inside the chamber 10 to minimize moisture inside the chamber 10 . In addition, the inside of the chamber 10 is maintained at a positive pressure to prevent external moisture from flowing into the inside of the chamber 10 .

In addition, in the other embodiment described above, when the internal dehumidifier 20 - 2 is secondarily driven, nitrogen is purged into the chamber 10 to remove moisture inside the chamber 10 , thereby removing moisture inside the chamber 10 . can be minimized.

If the operation of attaching the insulating tape (p) to the outer surface of the storage tank (t) in this state is performed, the insulating tape (p) may be firmly attached to the outer surface of the storage tank (t).

4 is a block diagram showing an insulation workshop moisture removal device according to another embodiment of the present invention.

As shown in FIG. 4 , the insulation workshop moisture removal device 1-2 according to another embodiment of the present invention has a difference in that the heating device 90 is further included as compared with the embodiment.

The heating device 90 may be installed inside the chamber 10 to heat the storage tank t. If the outer surface of the storage tank (t) is wrapped with the insulating tape (p) while heating the storage tank (t), there is almost no moisture around the storage tank (t), so the insulating tape (p) is applied to the outer surface of the storage tank (t). Can be attached well.

In another embodiment, the heating device 90 may remove moisture from the inside of the chamber 10 by increasing the internal temperature of the chamber 10 . Alternatively, it may be more efficient to operate the heating device 90 while operating the dehumidifier 20 . Alternatively, while the heating device 90 is operated, nitrogen may be purged inside the chamber 10 and the dehumidifier 20 may be operated to remove moisture inside the chamber 10 .

and a controller 60 for controlling the operation of the dehumidifier 20 , the nitrogen purge 40 , and the heating device 90 . The controller 60 may simultaneously or selectively drive the dehumidifier 20 , the nitrogen purge 40 , and the heating device 90 . The control of the controller 60 may be performed by a user's manipulation or may be performed by a preset setting value.

5 is a block diagram showing a heating device according to another embodiment of the present invention.

5, another embodiment operates the heating device 90 while rotating the storage tank (t) to heat the outer surface of the storage tank (t), and heat insulating tape on the outer surface of the storage tank (t) It can be attached by wrapping (p). In this case, not only the moisture on the outer surface of the storage tank (t), but also the internal moisture of the storage tank (t) is removed.

In the moisture removal method of the insulation workshop using the moisture removal device of another embodiment described above, the insulating tape (p) is applied to the outer surface of the storage tank (t) while heating the outer surface of the storage tank (t) by operating the heating device (90). By winding, moisture is removed around the storage tank (t) and the problem that the insulating tape (p) gets wet is solved, so that the insulating tape (p) can be firmly attached to the outer surface of the storage tank (t).

In addition, while operating the heating device 90, nitrogen inside the chamber 10 is purged and dehumidification is simultaneously performed to minimize moisture inside the chamber 10 . In this case, moisture can be removed from the inside of the chamber 10 without applying a positive pressure.

6 is a block diagram showing an application example of another embodiment of the present invention.

As shown in FIG. 6 , the insulation workshop moisture removal device 1-2 ′ according to another embodiment includes a heating device 90 inside the chamber 10 , but the insulating tape p is the heating device Pass through (90) to wrap the outer surface of the storage tank (t).

At this time, the insulating tape (p) passes through the heating device (90), but does not come into direct contact with the heating device (90) to make a passage space in the heating device (90) so that the insulating tape (p) passes through the space of the heating device (90) The heat insulating tape (p) heated while passing through is attached to the outer surface of the storage tank (t).

The rotational roller 70 for supplying the insulating tape (p) to the storage tank (t) is two or more, so that the operation of winding the insulating tape (p) on the storage tank (t) can be performed more efficiently.

The application example of another embodiment described above is a method in which the insulating tape (p) passes through the heating device (90) and the overheated insulating tape (p) is attached to the outer surface of the storage tank (t), so the storage tank (t) and the insulation The adhesive force of the tape p increases.

At this time, by purging nitrogen into the inside of the chamber 10, the inside of the chamber 10 is kept in a clean state to clean the outer surface of the storage tank (t), thereby further increasing the adhesion of the insulating tape (p).

In the above-described other embodiments and other embodiments, detailed descriptions of parts overlapping with the embodiments are omitted. Therefore, the above-described embodiment, another embodiment, and another embodiment of the insulation workshop moisture removal device and the insulation workshop moisture removal method to which it is applied can be mixed and applied, and a combination of a positive pressure and a dehumidifier, a combination of an external dehumidifier and an internal dehumidifier, and a heating device It is also possible to implement a moisture removal device for insulation worksites only with the combination of a nitrogen purge and a nitrogen purge.

In addition, when the heating device 90 is applied to the inside of the chamber 10, the heating device 90 is operated for a predetermined time to preheat the inside of the chamber 10, and the insulating tape ( It may be desirable to wind p).

In addition, in the process of removing moisture from the inside of the chamber 10 and winding the insulating tape p on the outer surface of the storage tank t, it is possible to increase the insulating performance by partially overlapping the insulating tape p.

7 is a view showing a method of winding the insulating tape on the storage tank according to another embodiment of the present invention.

As shown in FIG. 7 , the method for removing moisture in the insulation workshop removes moisture inside the chamber 10 and winds the insulating tape p on the outer surface of the storage tank t with one insulating tape in the storage tank ( It is possible to increase the insulation performance by winding multiple insulation tapes (p) to overlap and overlap each other instead of winding the circumference of t).

The scope of the present invention is not limited to the embodiments described above, but is defined by the claims, and a person of ordinary skill in the art may make various modifications and adaptations within the scope of the claims. It is self-evident that it can

1: Insulation workshop moisture removal device
3,5: both sides support 3a,5a: support bar
7: drive motor 10: chamber
20,20-1: External dehumidifier 20-2: Internal dehumidifier
30: positive pressure machine 40: nitrogen purge
50: detection means 51: temperature measuring device
53: humidity meter 55: pressure meter
60: controller 70: rotary roller
80: transfer rail 90: heating device

Claims (2)

a chamber in which a cryogenic storage tank for filling and storing cryogenic liquefied gas for attachment of an insulating tape is disposed therein;
An external dehumidifier that removes moisture inside the chamber, two or more are disposed outside the chamber to primarily dehumidify the inside of the chamber and introduce low-humidity air into the chamber, and 2 or more are disposed inside the chamber; a dehumidifier having an internal dehumidifier that sequentially removes moisture located inside the chamber;
a positive pressure device for maintaining a pressure inside the chamber higher than an external pressure;
a nitrogen purge for purging nitrogen into the chamber;
a detection means having a temperature measuring device for detecting the internal state of the chamber and measuring the temperature inside the chamber, a humidity measuring device for measuring the humidity inside the chamber, and a pressure measuring device for measuring the pressure inside the chamber;
a controller receiving the information detected by the detection means and controlling the internal state of the chamber;
a heating device for heating the storage tank in the chamber;
Both side supports including support bars installed on the bottom surface of the chamber and supporting both sides of the storage tank so that the storage tank is spaced apart from the bottom surface of the chamber by a predetermined distance;
a driving motor for rotating the storage tank by rotating the support bar; and
a rotating roller on which the insulating tape is wound and the insulating tape is released by rotation so that the insulating tape is wound on the outer surface of the storage tank; including,
The insulating tape is made of an aluminum material film on one side, and a heat insulating film on the opposite side, and wraps around the outer surface of the storage tank so that the aluminum material film is exposed to the outside, passes through the heating device and is heated in the storage tank Insulation workshop moisture removal device designed to cover the outer surface of the delete

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