KR101220153B1 - Breathing apparatus for blocking tritum - Google Patents

Abstract

It can increase the use time by delaying the melting of ice as much as possible, improve the removal efficiency of tritium by increasing the contact area with low temperature by passing air through the low temperature metal cooling member, and discharge the cold air in the septic tank to the outside A tritium-blocked respirator that minimizes heat loss by preventing as much as possible.
The present invention is provided with a mask having an inlet for intake of air and an outlet for discharging air, a connecting hose having one end connected to the inlet of the mask, and a hose connecting part coupled to the other end of the connecting hose, and having ice therein. It is composed of a purifying tank which is built in so that external air flowing into the air inlet passes through the ice and is supplied to the connection hose. In addition, the purifying tank is an inner cylinder partitioned into an upper ice chamber and a lower metal cooling member chamber, and filled in the metal cooling member chamber, the metal cooling member formed by agglomerating a metal having a high thermal conductivity in the form of a thread; And an outer cylinder for accommodating the inner cylinder, forming a water receiving portion between the lower portion of the inner cylinder, forming a gap between the side wall surfaces of the inner cylinder, and forming an air inlet connected to the gap on one side wall, and an upper portion of the inner cylinder and the outer cylinder. The upper cover is formed in the center and the opening is formed in the center, the upper side is formed with a hose connecting portion for coupling to the connection hose and the lower side is composed of a lid coupled to open and close the opening of the upper cover.

Description

Tritium blocking respirator {BREATHING APPARATUS FOR BLOCKING TRITUM}

The present invention relates to a tritium-blocking respirator, and more particularly, to remove the radioactive tritium and fine particles contained in the air in a laboratory handling a radioactive material, a nuclear power plant, a hospital using a radioisotope, or a general industrial site. It relates to a tritium blocking respirator that can.

In general, heavy water (D2O) is generally used as the coolant and moderator of heavy water reactor type nuclear power plants. This heavy water combines with neutrons during the operation of the reactor to be tritiated to have radioactivity. Will increase.

Since tritium has a high radioactivity, if it leaks, it will have a lethal effect on an operator. In particular, the leaked tritium is present in the gaseous state in the air, and the tritium is introduced into the body through the work of the worker or through the skin.

Since tritium has short beta rays, the risk of extracorporeal radiation is not very high. This is because human skin consists of a 20-100 μm thick outer skin and a 1-3 mm thick dermis.

That is, electrons emitted from tritium outside the body cannot reach the target cells sensitive to radiation, and tritium may be damaged by the human body by radiation emitted from the tritium only when present in the body. Therefore, it is important to prevent inhalation of tritium by respiratory action of workers.

In this way, the tritium present in the vapor state in the air enters the body through the respiratory action of the worker or through the skin, and the effective half-life is attenuated, causing the worker's body to be exposed to radiation. Tritium should be reduced. Therefore, when working in a laboratory handling radioactive materials, nuclear power plants, hospitals using radioisotopes, or general industrial sites, wear a tritium-blocking respirator that can remove and breathe radioactive tritium and particulates contained in the air. have.

As a conventionally known tritium-blocking respirator, there is a "tritium defense respirator" of Korean Patent Registration No. 10-659783, the configuration of which can cover the user's nose and mouth, the inlet for air inhalation according to the user's breathing And a mask formed with a discharge port through which the air is discharged, and a connection hose connected to the suction port of the mask, and an air flow inside, an upper end coupled to the connection hose, and a stopping plate having a plurality of through holes formed at the lower end thereof. And a plurality of air inlet pipes in which ice is embedded therein, and outside air flows up and down through the purification tanks so that external air flows in and flows into the purification tanks through a locking plate under the purification tanks; It is detachably coupled to the lower part of the purification tank, and consists of a fresh water container containing water generated while melting the ice inside the purification tank. have.

According to this configuration, when wearing a tritium protective respirator and breathing, the external air containing tritium is introduced through the air inlet pipe, passing through the ice inside the clarifier, the tritium contained in the external air is low temperature It is removed by liquefaction while cooling in contact with the ice. Thus, the worker can breathe tritium-removed fresh air through the mask.

However, in this conventional configuration, since the air introduced into the air inlet pipe passes directly in contact with the ice inside the purification vessel, the contact time between the air and the ice is short, so that the tritium removal efficiency is low, and the purification vessel has a single cylindrical shape. Since the heat insulation performance is low, there is a disadvantage that the ice inside melts quickly and the use time is short. In addition, the cold air inside the septic tank is discharged to the outside through the air inlet pipe, resulting in annual loss. As the outside air comes into direct contact with the ice, foreign matter contained in the outside air flows in and contaminates the ice or connects the hose directly. There is a problem that the user is breathing through the inside of the mask.

In addition, there is a conventional known tritium blocking respirator, there is a "purification tank structure of the tritium removal respirator" of Korean Patent Registration No. 10-838214, the configuration is formed on the top of the coupling hose coupling portion for coupling to the connection hose, The bottom surface has a plurality of through-holes formed in the inner passage formed to store the ice therein; An outer cylinder spaced apart from the outer surface of the inner cylinder by a water receiving portion formed at a lower portion thereof; The lower portion is formed with a lower band coupled to the outer peripheral surface of the outer cylinder, the upper portion is formed with an upper band coupled to the connection hose coupling portion of the inner cylinder, the filter consisting of a fibrous dustproof filter portion connecting between the lower band and the upper band. It consists of a cap.

According to this configuration, the external air introduced during respiration is removed by the dustproof filter part of the filter cap, and then the thermal efficiency is improved by inducing a precooling effect by first cooling by the cold air of the inner cylinder while passing between the outer cylinder and the inner cylinder. It was made to be.

However, even in such a conventional configuration, since the introduced air is directly in contact with the ice inside the septic tank, the contact time between the air and the ice is short, so tritium removal efficiency is low, and the cool air inside the septic tank is between the inner and outer cylinders. The loss of lead loss through the gap to the outside could not be solved. Moreover, since the dustproof filter part is exposed to the outside, it is not only easily damaged, but also dust accumulated on the surface of the dustproof filter part. There is a drawback of being dirty due to exposure is not clean.

The present invention is to solve the above problems of the prior art, the object of which is to delay the melting of ice as much as possible to increase the use time, by passing the air through the low temperature metal cooling member to increase the contact area with low temperature It is possible to improve the tritium removal efficiency, and to remove the tritium blocking respirator that can minimize the heat loss by preventing the cold air from being discharged to the outside as much as possible.

The present invention for achieving the above object, the mask which can cover the user's nose and mouth and the air inlet and the air outlet is formed in accordance with the user's breath, and one end is connected to the inlet of the mask Into the purifying tank is provided with a connection hose through which the air is circulated, and a hose connection part coupled to the other end of the connection hose, and the ice is embedded therein so that external air flowing into the air inlet passes through the ice and is supplied to the connection hose. In the tritium-removing respirator, the purifying tank is formed in a cylindrical shape having a plurality of through-holes on the upper surface thereof, and a metal cooling member formed by agglomeration of a metal having high thermal conductivity in the form of yarns. The metal cooling member holding chamber at the bottom which is primarily removed by cooling and liquefying tritium The built-in to the cooling of the tritium in the air, the inner tube having an upper ice storage chamber for removing secondarily by liquefaction; An outer cylinder formed of a cylindrical shape having an upper portion receiving the inner cylinder, forming a water receiving portion between the lower portion of the inner cylinder, forming a gap between the side walls of the inner cylinder, and forming an air inlet connected to the gap on one side wall; An upper cover covering an upper portion of the inner and outer cylinders and having an opening formed at a center thereof; And the upper side is formed with a hose connecting portion for coupling to the connection hose and the lower side is characterized by a tritium blocking respirator consisting of a lid coupled to open and close the opening of the upper cover.

In addition, the present invention is installed in the air inlet of the outer cylinder backflow prevention mechanism for preventing the backflow of air, and detachably installed on the outer surface of the outer cylinder Hepa filter to remove foreign substances from the outside air to enter the air inlet And a filter cover detachably coupled to the outer cylinder to cover the HEPA filter so as not to be exposed to the outside and having a plurality of air holes, and an insulating member attached to an outer circumferential surface of the inner cylinder. Characterized by the respiratory system.

According to the tritium-blocking respirator of the present invention having the above-described configuration, as the metal cooling member having a high thermal conductivity is accommodated in the metal cooling member accommodation chamber provided at the lower portion of the ice accommodation chamber in the septic tank, The temperature can be maintained at a low temperature, thereby increasing the removal efficiency because tritium can be removed in double by contacting the external air introduced by the user's breath with the metal cooling member and the ice in turn. In addition, since the metal cooling member is formed by agglomerating metal in a thread form, the contact area with air is increased to further improve tritium removal efficiency, and since foreign substances contained in the air are removed, ice is contaminated by foreign substances or foreign substances. This connection hose flows into the mask to prevent the user from inhaling.

In addition, the present invention, since the temperature of the outside air introduced into the purification vessel is lowered in the process of passing through the gap between the outer cylinder and the inner cylinder and the metal cooling member, it is possible to lower the temperature of the outside air in contact with the ice as possible, Since the metal cooling member in contact with the ice is at a low temperature, the melting of the ice can be delayed as much as possible. Also, the backflow prevention device installed at the air inlet through which the outside air flows prevents the backflow of the cold air in the tank, thereby minimizing heat loss in the tank. Therefore, there is an effect to extend the maximum use time.

In addition, the present invention is to remove the foreign matter from the outside air flowing into the air inlet by the HEPA filter installed in the outer cylinder, the HEPA filter is covered by a filter cover so as not to be exposed to the outside can keep the appearance of the purifying container clean, It is a useful invention that can minimize the heat loss by the heat insulating member attached to the outer peripheral surface of the inner cylinder.

1 is a perspective view showing a wearing state of the tritium blocking respirator according to the present invention.
Figure 2 is a perspective view of the tritium blocking respirator according to the present invention.
Figure 3 is an exploded perspective view of the tritium blocking respirator according to the present invention.
Figure 4 is a longitudinal cross-sectional view of the tritium blocking respirator according to the present invention.
5 is a cross-sectional view taken along the line AA of FIG.

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

1 shows a state in which the tritium-blocking respirator of the present invention is worn, and may cover a user's nose and mouth, and an inlet 11 through which air is inhaled and an outlet 12 through which air is discharged according to the user's breathing. The mask 10 is provided, and the suction port 11 of the mask 10 and the hose connecting portion 21 of the septic tank 20 worn on the waist are connected by a connection hose 13 through which air flows. do.

The purifying container 20 is configured such that external air introduced into the air inlet 22 through the ice 23 is supplied to the connection hose 13 through the ice 23, as shown in FIGS. 2 to 5. As shown, it consists of the inner cylinder 30 and the outer cylinder 40, and the upper cover 50 and the lid 60.

The inner cylinder 30 has a cylindrical shape in which an upper surface is opened and a plurality of through holes 31 are formed on the lower surface thereof, and the interior of the inner cylinder 30 has an upper ice accommodation chamber 32 and a lower metal cooling member accommodation chamber. It is divided into (33) and the ice chamber 32 is filled with ice 23, the metal cooling member chamber 33 is filled with a metal cooling member 25 formed by agglomeration of a metal having a high thermal conductivity in the form of a thread. On the outer circumferential surface of the inner cylinder 30, the heat insulating member 34 is attached to minimize the annual loss of the inner cylinder 30.

The outer cylinder 40 is configured to accommodate the inner cylinder 30 is formed in a cylindrical shape of the upper portion, and has a space for forming a water receiving portion 42 between the lower inner cylinder 30, the inner cylinder ( It is configured to form a predetermined gap 43 between the side wall surface of the 30, the air inlet 22 is formed on one side wall surface of the outer cylinder 40 is connected to the gap 43. In addition, the shape of the outer cylinder 40 is formed in the curved surface portion in contact with the waist so that it is easy to wear on the waist, the curved portion is provided with a resilient engaging piece 24 and the user's waistband.

The upper cover 50 is to cover and seal the upper portions of the inner cylinder 30 and the outer cylinder 40 at the same time, and both the coupling grooves 41a and 41b formed on both sides of the outer cylinder 40 and the upper cover 50. The coupling protrusions 51a and 51b formed in the upper surface of the upper cover 50 and the outer cylinder 40 are sealed by the packing 52 provided in the upper cover 50. In addition, an opening 53 is formed at an upper center of the upper cover 50.

Lid 60 is provided with a hose connecting portion 21 for coupling to the connecting hose 13 for connecting the mask 10 and the purifier 20, the upper portion, the opening 53 of the upper cover 50 in the lower portion ) Are coupled to open and close.

The coupling structure of the lid 60 and the upper cover 50, the plurality of locking grooves 61 formed in the lower portion of the lid 60 protrudes from the inner surface of the opening 53 of the upper cover 50 It is made by fitting to the projection 54, the locking groove 61 is composed of a vertical portion (61a) and a horizontal portion (61b) to fit the projection (54) in the vertical portion (61a), and then the lid 60 By rotating and positioning the projection 54 on the horizontal portion 61b, it becomes detachable. In addition, the horizontal portion (61b) is formed to be inclined to be in close contact with the upper cover 50 when the lid 60 is rotated, the lid 60 and the upper cover by the packing 62 provided in the lid 60 It is designed to prevent the leakage of air when the 50 is in close contact.

On the other hand, the present invention is the HEPA filter 72 for removing foreign matter from the outside air flowing into the air inlet 22, the backflow prevention mechanism 71 to prevent the backflow of air to the air inlet 22 of the outer cylinder (40) And a filter cover 73 covering the HEPA filter 72.

As shown in FIG. 5, the backflow prevention mechanism 71 is provided at the air inlet 22 and has an edge structure 71b having an air flow hole 71a, and an air flow hole 71a of the edge structure 71b. ), Ie, the non-return plate 71c for opening / closing the air inlet 22. The non-return plate 71c is formed of a flexible material, and is formed by air pressure when air flows from the inside of the air inlet 22 to the outside. The air inlet 22 is closed by being in close contact with the frame 71b to prevent backflow of air, and when the air flows from outside to inside, the air inlet 22 is opened to allow air to flow therein.

The HEPA filter 72 is located at the air inlet 22 to be detachably coupled to the outer surface of the outer cylinder 40, and forms a locking piece 72a on the HEPA filter 72, and the outer cylinder 40 After forming the insertion groove 44 into which the locking piece 72a is inserted, and the locking jaw 45 through which the locking piece 72a is held, the locking piece 72a is inserted into the insertion groove 44. It is made by moving to the holding jaw 45 and holding.

The filter cover 73 covers the HEPA filter 72 so as not to be exposed to the outside, and retains the hook protrusion 73a formed on the filter cover 73 on the locking jaw 45 of the outer cylinder 40. It is detachably coupled by a plurality of air holes, and a plurality of air holes 73b are formed in the lower part of the filter cover 73 so that external air can flow into the HEPA filter 72.

Referring to the action of the tritium blocking respirator of the present invention made of such a configuration as follows.

First, as shown in FIG. 3 and FIG. 4, the assembly of the clarification tank 20 includes the ice 23 and the metal cooling member in the ice accommodation chamber 32 and the metal cooling member accommodation chamber 33 of the inner cylinder 30. Each of 25 is filled in, and the inner cylinder 30 is accommodated in the outer cylinder 40, and then the engaging projections 51a and 51b of the upper cover 50 are coupled to the grooves 41a and 41b of the outer cylinder 40. By coupling with each other, the opening of the inner cylinder 30 and the outer cylinder 40 is closed. Subsequently, the locking piece 72a of the HEPA filter 72 is inserted into the insertion groove 44 of the outer cylinder 40, and then moved downward to be held on the locking jaw 45 so as to be installed outside the air inlet 22. Then, the HEPA filter 72 is covered by holding the hook protrusion 73a of the filter cover 73 on the locking step 45 of the outer cylinder 40. Subsequently, after inserting the vertical portion 61a of the locking groove 61 of the lid 60 into the protrusion 54 formed on the inner surface of the opening 53 of the upper cover 50, the protrusion 60 is rotated to form the protrusion ( 54 is made by closing the opening 53 of the upper cover 50 so that it is located in the horizontal portion (61b) of the locking groove (61).

The clarification tank 20 assembled as described above connects the hose connecting portion 21 formed in the lid 60 to the connection hose 13 connected to the inlet 11 of the mask 10, as shown in FIG. By using the elastic fastening piece 24) to be worn on the user's waistband.

The tritium blocking respirator of the present invention used as described above, when the user wears the mask 10 and breathes, external air flows into the filter cover 73 through the air hole 73b of the filter cover 73. By passing through the HEPA filter 72, foreign matter contained in the outside air is removed, and then flows into the air inlet 22 of the outer cylinder 40.

External air from which foreign substances have been removed by the HEPA filter 72 flows between the gap 43 of the outer cylinder 40 and the inner cylinder 30 and flows into the inner through the through-hole 31 of the inner cylinder 30 to accommodate the metal cooling member. After passing through the metal cooling member 25 filled in the chamber 33 and the ice 23 filled in the ice receiving chamber 32 in order, it is introduced into the mask 10 through the connection hose 13.

At this time, the metal cooling member 25 is formed by agglomeration of a metal having a high thermal conductivity in a yarn form, and is low temperature by the ice 23. Therefore, the metal cooling member 25 is primarily cooled by liquefying tritium in the air when it comes into contact with external air. Then, the air is subsequently removed by contacting the ice 23 to cool the tritium in the air to liquefy and increase the removal efficiency of the tritium, liquefied and removed tritium is ice (23) ) Is melted and dropped to the bottom with the water generated is accommodated in the water receiving portion 42 of the outer cylinder (40).

In addition, since the metal cooling member 25 is formed by agglomerating the metal in the form of thread, when the air passes through, the contact area is increased, and the contact time is extended, so that the tritium removal efficiency can be further improved. Since the foreign matter contained in the air is removed again, the ice 23 may be contaminated by the foreign matter or the foreign matter may be introduced into the mask 10 through the connection hose 13 to further prevent the user from inhaling.

And the present invention, the temperature of the outside air introduced into the purification tank 20 is lowered in the process of passing through the gap 43 and the metal cooling member 25 between the outer cylinder 40 and the inner cylinder 30, thereby The external air temperature at the time of contact with the ice 23 can be lowered as much as possible. Furthermore, since the metal cooling member 25 in contact with the ice 23 is in a low temperature state, the ice 23 can be delayed to the maximum.

In addition, by the non-return mechanism 71 provided at the air inlet 22 through which external air flows, when the air is introduced as shown in FIG. 5, the non-return plate 71c opens the air inlet 22, Since the air inlet 22 is closed when the air inside is discharged to the outside, reflux of cold air in the clarification vessel 20 can be prevented from flowing back, thereby minimizing heat loss in the clarification vessel 20, and the outside of the inner cylinder 30. Since the heat insulating member 34 attached to the circumferential surface minimizes the heat dissipation of the inner cylinder 30, the use time of the clarifier 20 can be extended as much as possible.

When using the purification tank 20 in this way, if the decomposition in the reverse order of assembly, after removing the waste liquid stored in the water holding portion 42 and washing the metal cooling member 25, can be reused, contaminated HEPA filter The 72 can be replaced with a new one, and the HEPA filter 72 is covered so as not to be exposed to the outside by the filter cover 73, it is possible to keep the appearance of the purifying container 20 clean.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative of the present invention and not to be construed as limiting the scope of the present invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10 mask 11 suction port
12: outlet 13: connection hose
20: Purification container 21: hose connection
22: air inlet 23: ice
25: metal cooling member 30: inner cylinder
31: through hole 32: ice chamber
33: metal cooling member chamber 34: heat insulating member
40: outer cylinder 42: water holding portion
43: clearance 50: top cover
53: opening 60: lid
71: backflow prevention mechanism 72: hepa filter
73: filter cover

Claims (3)

A mask which covers the user's nose and mouth and forms an inlet for inhaling air and an outlet for discharging air according to the user's breath, a connecting hose having one end connected to the inlet of the mask and having air flowed therein; In the tritium removal respirator consisting of a hose connected to the other end of the connection hose is provided with a purifying tank to be supplied to the connection hose through the ice to the outside air is introduced into the air inlet is provided with ice inside,
The purifying container,
The upper surface is opened and the lower surface is formed in a tubular shape having a plurality of through holes, and a metal cooling member formed by agglomerating metal having high heat conductivity in a thread form is built-in to cool and liquefy tritium in the air to remove it first. An inner cylinder having a lower metal cooling member accommodating chamber and an upper ice accommodating chamber in which ice is embedded and secondly removed by cooling and liquefying tritium in the air;
An outer cylinder formed of a cylindrical shape having an upper portion receiving the inner cylinder, forming a water receiving portion between the lower portion of the inner cylinder, forming a gap between the side walls of the inner cylinder, and forming an air inlet connected to the gap on one side wall;
An upper cover covering an upper portion of the inner and outer cylinders and having an opening formed at a center thereof; And
The upper side is formed with a hose connecting portion for coupling to the connection hose and the lower side tritium blocking respirator, characterized in that made of a lid coupled to open and close the opening of the upper cover. 2. The apparatus of claim 1, further comprising: a backflow preventing mechanism installed at an air inlet of the outer cylinder to prevent backflow of air, and a removably installed at an outer surface of the outer cylinder to remove foreign substances from the outside air so as to flow into the air inlet. A filter and a tritium-blocking respirator, characterized in that it further comprises a filter cover which is detachably coupled to the outer cylinder and formed with a plurality of air holes by covering the filter so that the HEPA filter is not exposed to the outside. 3. The method according to claim 1 or 2, Tritium blocking respirator characterized in that it further comprises a heat insulating member attached to the outer circumferential surface of the inner cylinder.

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