KR102175433B1 - Concentration-maintaining sodium hypochlorite storage tank - Google Patents

Abstract

The present invention relates to a concentration maintaining hypochlorite storage tank for constantly maintaining the concentration of sodium hypochlorite by optimizing the temperature of the stored sodium hypochlorite through a freon refrigerant. The hypochlorite storage tank for storing sodium hypochlorite comprises a cooling coil installed therein to maintain the concentration of sodium hypochlorite by receiving a freon refrigerant through a connection pipe connected to a cooling device and cooling the stored sodium hypochlorite, and to send back the freon refrigerant to the cooling device after cooling the sodium hypochlorite.

Description

Concentration-maintaining sodium hypochlorite storage tank

The present invention relates to a hypochlorite storage tank for storing sodium hypochlorite, and more particularly, to a concentration maintenance type hypochlorite storage tank that maintains a constant concentration of sodium hypochlorite by optimizing the temperature of sodium hypochlorite stored through a freon refrigerant.

Conventional water and sewage disinfection has adopted a chlorine disinfection method that is optimal for disinfecting water and preventing contamination of pipelines due to its good disinfecting power, economical, and persistence, but in the case of chlorine disinfection, liquid chlorine is vaporized with a vaporizer and then injected into the ejector. In recent years, it has been replaced by sodium hypochlorite, which is liquid chlorine, considering the risk caused by this.

Sodium hypochlorite is manufactured to have an effective chlorine concentration of 0.8% to 12%, and the storage of sodium hypochlorite is a polyethylene storage tank that is compression-molded with a storage tank mold by melting synthetic resin pellets such as polyethylene in a melting machine to prevent corrosion. I am using

Since sodium hypochlorite is chemically unstable at room temperature, the effective chlorine decreases as time passes, and especially, as the temperature increases, the reduction rate is remarkably accelerated, resulting in a problem in that it cannot maintain a stable concentration. .

To solve this problem, conventionally, a chemical solution for maintaining the concentration is injected, but sometimes excessively is injected depending on the amount of effective chlorine reduction, so that carcinogenic substances such as bromate and chlorate are also increased, which is harmful to the human body and adversely affects the water quality. to be.

On the other hand, according to the data on the change in the content of effective chlorine and harmful substances according to the disinfectant storage institution of the Ministry of Food Safety of Korea, sodium hypochlorite was stored at 30℃, and chlorate, a hazardous substance, increased by 13.3-28.6 times of the initial concentration at 12 weeks. As a result, it was found that there was almost no change in concentration even in 12 weeks at 20°C, and at 4°C, it was proved that the optimal storage method is to store sodium hypochlorite at low temperature.

In this regard, as disclosed in Korean Patent Registration No. 10-1393361'A device for producing sodium hypochlorite', the temperature of the solution is increased by 40-50℃ during the production of cold salt by electrolyzing salt water. Relatively many studies have been conducted on the use, but research on the technology of keeping the prepared sodium hypochlorite chemical solution at a low temperature when stored in a storage container is insignificant.

In particular, in the case of using a cooler in the process of production equipment as in Korean Patent No. 10-1393361, since it is cooled by using water used in the production equipment process, the cold salt of 40-50℃ is reduced to about 20-30℃. Although it can be, it is difficult to lower it below that, and thus, the effective chlorine decreases as time passes, as described above, because sodium hypochlorite roams the chemically unstable room temperature.

The present invention is proposed in order to solve the above problems, and relates to a hypochlorite storage tank that maintains a low temperature when the prepared sodium hypochlorite chemical solution is stored in a storage container, and the temperature of sodium hypochlorite stored using a freon refrigerant is approximately It is possible to reduce to 2 to 4 ℃, and thereby has an object to provide a concentration-maintaining type cold salt storage tank capable of maintaining a constant effective chlorine concentration of sodium hypochlorite.

The concentration-maintaining cold-salt storage tank according to an embodiment of the present invention for solving the above problems is a cold-salt storage tank for storing sodium hypochlorite, wherein the cold-salt storage tank is supplied with a freon refrigerant through a connection pipe connected to a cooling device and stored. It may include a cooling coil of Hastelloy-based material installed therein so as to maintain the concentration by cooling sodium hypochlorite, and to deliver the Freon refrigerant obtained by cooling the sodium hypochlorite back to the cooling device.

Here, the cooling coil may be an external coil wound outside the salt-free storage tank or a built-in coil wound inside the cold-sealing storage tank.

In addition, the salt storage tank is formed solely based on a material of stainless steel, titanium, polyethylene (PE, Poly Ethylene), fiber reinforced plastics (FRP), carbon steel, or Teflon on one or more of the inner and outer surfaces. , Polyvinyl chloride (PVC, Poly Vinyl Chloride), chlorinated polyvinyl chloride (C-PVC, Chlorinated Poly Vinyl Chloride), rubber (rubber), it may be formed to lining or coating an epoxy.

In addition, the salt-free storage tank may further include a cleaning unit for cleaning the interior of the storage tank, and the cleaning unit may clean the interior of the storage tank by filtering and ionizing water supply.

In addition, the hypochlorite storage tank further includes a leak prevention unit for preventing leakage of sodium hypochlorite, and the leakage prevention unit includes: a leakage detection sensor detecting leakage of the stored sodium hypochlorite; An emergency electric shut-off device that is installed in an outflow line for outflowing the stored sodium hypochlorite to the outside, and interlocks with the leakage detection sensor to automatically block the outflow line when a leakage of sodium hypochlorite is detected, and the hypochlorite storage tank and outflow line It is installed to open and close the connector, and may include an emergency manual shut-off device that is manually operated.

In addition, the salt storage tank further includes a salt filling portion for filling sodium hypochlorite into the storage tank, the cold salt filling portion, a filling line connected to the salt storage tank and provided with a hypohydrochloric acid filling port at one end; One or more filtration filters provided on one side of the filling line, and a filling pressure sensing device installed on one side of the filling line to sense a pressure of sodium hypochlorite to be filled, and to notify the outside when the pressure is exceeded.

In addition, when the cooling coil is a built-in coil, the cold storage tank includes an expansion unit that is provided on one side of the cooling coil and instantly expands the volume of sodium hypochlorite passing through, and a circulation for inducing the flow of sodium hypochlorite to the expansion unit. May contain more wealth.

In addition, the salt storage tank is provided with one or more partition walls to form at least two divided spaces, and the cooling coil is provided for each individual divided space, and a filling line for filling sodium hypochlorite for each divided space and outflow outflow Lines can be installed.

In addition, the shading storage tank is provided with an inlet valve and a water outlet valve for connecting the divided space in the partition wall, and a flow induction device for flowing the temperature sensor and sodium hypochlorite to the other divided spaces for each of the divided spaces is provided. I can.

In addition, when the cooling coil is a built-in coil, the shading storage tank may further include an elevating and descending part installed at the lower side to adjust the height of the shading storage tank, and the height of the cooling coil installed therein may be adjusted.

In addition, the salt-free storage tank may further include a spherical fluid sensing device having an internal gyro sensor and fixedly installed on one side so as to rotate by the fluctuation of sodium hypochlorite.

In addition, the shading storage tank may be provided with a gyro sensor to detect shaking of the storage tank.

The concentration-maintaining cold-salt storage tank according to an embodiment of the present invention can reduce the temperature of the stored sodium hypochlorite to about 2 to 4°C by using the chemical properties of the freon refrigerant and the material structure of the storage tank, and thus the sodium hypochlorite Effective chlorine concentration can be effectively maintained constant.

In addition, it includes a configuration to prevent the leakage of sodium hypochlorite in multiple, so it is possible to store and use sodium hypochlorite more safely.

In addition, it is possible to effectively prevent foreign substances from being contained in sodium hypochlorite stored by providing a washing unit and a filter device.

In addition, there is an advantage in that the cooling efficiency of sodium hypochlorite can be maximized by providing an expansion part and a circulation part.

In addition, sodium hypochlorite can be divided and managed and cooled, so that cooling efficiency can be improved and management can be effective.

In addition, it is possible to adjust the height of the cooling coil in the cold storage tank by adjusting the height of the cold storage tank, so that the cooling coil can be adjusted to a location where cooling is efficient.

In addition, by detecting the fluctuation of sodium hypochlorite through the fluid detection device, it is possible for the operator to more easily cope with various dangerous environments.

The effects according to the embodiments of the present invention mentioned above are not limited to the description, and may further include all effects predictable from the specification and drawings.

1 is a schematic diagram of a concentration-maintaining cold salt storage tank according to an embodiment of the present invention.
2A to 2D are exemplary views of a cooling coil, which is a configuration of the concentration-maintaining type cold salt storage tank of FIG. 1.
3A to 3C are exemplary views of a built-in cooling coil among the cooling coils of FIG. 2.
4 is an exemplary view of a concentration-maintaining cold-salt storage tank provided with an expansion part and a circulation part according to an embodiment of the present invention.
5 is an exemplary diagram of a concentration-maintaining type cold-salt storage diagram in which sodium hypochlorite is divided and stored according to an embodiment of the present invention.
6A and 6B are diagrams illustrating the height adjustment of the concentration-maintaining type cold salt storage tank according to an embodiment of the present invention.
7 is an exemplary view of a concentration-maintaining type cold salt storage tank equipped with a fluid sensing device according to an embodiment of the present invention.
8 is a test report for detecting the effective chlorine concentration stored in sodium hypochlorite in a concentration-maintaining hypochlorite storage tank of an embodiment of the present invention in accordance with the standards, specifications and labeling standards (Ministry of Environment Notification No. 2017-190, 2017.10.23) of water treatment agents.
9 is a test report for detection of sodium hypochlorite chlorate and bromate stored in a concentration-maintaining cold-salt reservoir according to the standards, standards and labeling standards (Ministry of Environment Notification No. 2017-190, 2017.10.23) of water treatment agents. .

Hereinafter, the description of the present invention with reference to the drawings is not limited to a specific embodiment, and various transformations may be applied and various embodiments may be provided. In addition, the content described below should be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention.

In the following description, terms such as first and second are terms used to describe various elements, and their meanings are not limited thereto, and are used only for the purpose of distinguishing one element from other elements.

The same reference numbers used throughout this specification denote the same elements.

Singular expressions used in the present invention include plural expressions unless the context clearly indicates otherwise. In addition, terms such as "include", "include" or "have" described below are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification. It is to be construed and not to preclude the possibility of addition or presence of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

Hereinafter, with reference to FIGS. 1 to 9 will be described in detail for the concentration-maintaining type cold salt storage tank according to an embodiment of the present invention.

1 is a schematic diagram of a concentration-maintaining cold salt storage tank according to an embodiment of the present invention.

Referring to Figure 1, the concentration-maintaining type cold salt storage tank according to an embodiment of the present invention is a storage tank that receives sodium hypochlorite, which is used before supplying sodium hypochlorite to a supply, and stores it for a medium to long term, and a sodium hypochlorite production system It can be configured to transport the sodium hypochlorite generated in the tank to a tank lorry and store it.This is a component of the sodium hypochlorite production system, which is different from the temporary storage tank that is connected to the sodium hypochlorite generation unit and supplied through pipes. It becomes.

The concentration-maintaining type cold salt storage tank according to an embodiment of the present invention is configured to include a cooling coil 40, and further includes a washing unit 100, a leak prevention unit 200, and a cold salt filling unit 300. I can.

Specifically, the cooling coil 40 may be formed of Hastelloy-based, titanium or graphite materials alone, or may be formed of a composite material thereof.

Here, Hastelloy is an oxidation-resistant heat-resistant alloy that has strong corrosion resistance to reducing acids and is particularly strong in hydrochloric acid, and has good workability and weldability. Its series include Hastelloy-A, Hastelloy-B, Hastelloy B-2, Hastelloy -C, Hastelloy C-4, Hastelloy C-22, Hastelloy C-276, Hastelloy-D, Hastelloy-F, Hastelloy-G, Hastelloy G-3, Hastelloy G-30, Hastelloy -X and so on.

Among these, in the present invention, it is preferable to use a Hastelloy-C series, but the present invention is not limited thereto, and any Hastelloy series may be used.

In addition, titanium is a material with a higher melting point than steel and aluminum, and is a material with high strength, stiffness, toughness, and low density at various temperatures. In particular, the titanium oxide film formed on the titanium surface is very strong, Not only does it have a great corrosion inhibitory effect, but it has strong corrosion resistance because it is immediately regenerated even if the passivation film is destroyed.

In addition, graphite is a convenient material having strong heat resistance, thermal shock resistance, corrosion resistance, and good electrical and thermal conductivity, and the cooling coil 40 of the present invention is provided with one of Hastelloy series, titanium, and graphite as described above, or These composite materials, for example, have been prepared in the form of coating or lined with titanium and graphite based on Hastelloy series, thereby forming strong corrosion resistance and heat resistance.

In addition, the cooling coil 40 is installed inside the salt-free storage tank 10 and may be connected to the cooling device 20 by a connection pipe 30.

Here, the cooling device 20 may be provided outside the salt-free storage tank 10, and the connection pipe 30 extends from the cooling device 20 provided outside and passes through the salt-free storage tank 10, and the cooling coil 40 Can be connected with.

In addition, the connection pipe 30 may be connected to both one end and the other end of the cooling coil 40. That is, two connection pipes 30 are provided (30a, 30b), one (30a) connects one end of the cooling coil (40) and the cooling device (20), and the other (30b) is the cooling coil (40) The other end of the cooling device 20 can be connected.

One of the two connection pipes (30a, 30b) is a pipe that transfers the fluid from the cooling device (20) to the cooling coil (40), and the other is a pipe that receives the fluid from the cooling coil (40) to the cooling device (20). It may be a pipe that delivers.

The fluid circulating in the cooling device 20, the connection pipe 30, and the cooling coil 40 as described above may be a freon refrigerant. Freon refrigerants are halogenated hydrocarbon-based refrigerants whose main elements are carbon (C), hydrogen (H), chlorine (Cl), and fluorine (F), and are divided into CFC, HCFC, and HFC depending on the presence or absence of each element. It has stability up to 500℃, has a wide boiling point range, is non-flammable, and has very stable chemical properties such as colorless, odorless and non-toxic.

The cooling coil 40 is supplied with a freon refrigerant that has absorbed the cooling heat of the cooling device 20 through the above-described freon refrigerant, cools the stored sodium hypochlorite to maintain sodium hypochlorite at a certain concentration, and recharges the cooling heat. The freon refrigerant delivered to sodium chlorate may be transferred back to the cooling device 20 to allow heat exchange to occur.

In addition, the salt-free storage tank 10 may be formed solely based on a material of stainless steel, titanium, polyethylene (PE, Poly Ethylene), fiber reinforced plastics (FRP), and carbon steel, or may be formed on one or more of the inner and outer surfaces. Teflon, polyvinyl chloride (PVC, Poly Vinyl Chloride), chlorinated polyvinyl chloride (C-PVC, Chlorinated Poly Vinyl Chloride), rubber (rubber), it may be formed to be coated to line or coat epoxy.

For example, the salt-free storage tank 10 may be formed of a single material of titanium, polyethylene, or fiber-reinforced plastic. In addition, the shading reservoir 10 may be lined with Teflon on the inner surface of the carbon steel, or may be coated with louver or epoxy. In addition, the salt-free storage tank 10 may be coated with louver or epoxy based on stainless steel. In addition, the salt-free storage tank 10 may be lined or coated with polyvinyl chloride or chlorinated polyvinyl chloride based on fiber-reinforced plastic (FRP).

As such, the salt-free storage tank 10 may be provided alone, or may be combined to be lined or coated with a variety of materials.Depending on the combination, the cooling heat is maintained constant for a long time, corrosion resistance, chemical resistance, heat resistance, and strength are increased. And the like.

For example, stainless steel has excellent durability and heat resistance and is easy to prevent corrosion, and Teflon has chemical resistance and heat resistance.When it is made of stainless steel and is lined with Teflon, it has excellent durability, chemical resistance, heat resistance, and corrosion protection. A storage tank 10 may be provided.

In addition, sodium hypochlorite, which has absorbed the cooling heat, may help to keep the cooling heat constant without releasing it.

The concentration-maintaining type cold-salt storage tank according to an embodiment of the present invention uses the chemical properties of the Freon refrigerant and the material structure of the cold-salt storage tank 10 as described above, which is a temperature at which sodium hypochlorite has an optimum concentration of about 2 to 4°C. It can be cooled directly so as to be maintained, and by sustaining the cooling heat for a long time, when sodium hypochlorite is used later, disinfection efficiency can be high and harmful substances can be prevented.

On the other hand, although not shown here, it is natural that a pump or the like is provided to circulate the refrigerant freon.

The washing unit 100 is provided to clean the interior of the salt-free storage tank 10, and one end is formed to pass through the salt-free storage tank 10 to supply water supplied from the outside to the inside of the salt-free storage tank 10 (110) And forming a pipe extending from one end of the water supply pipe 110, at least one injection nozzle 125 is installed along the pipe line, and the injection pipe 120 for injecting water into the interior of the salt-free storage tank 10 And, it may be configured to include a strainer 130 provided on one side of the water supply pipe 110 to filter the water supply and an ionization device 140 that ionizes the water filtered by the strainer 130.

Here, the water supply pipe 110, the injection pipe 120, the injection nozzle 125, etc. may all be made of Hastelloy series, a single material of titanium or graphite, or a composite material thereof, but this is necessarily limited as a preferred example. It is not a matter.

This washing unit 100 can be used to clean the inside of the hypochlorite storage tank 10 when sodium hypochlorite is not loaded in the cold salt storage tank 10, and prevents corrosion of the cold salt storage tank 10 due to residual sodium hypochlorite. It is possible to improve the life expectancy of the hypochlorite storage tank 10 by preventing the mixture of impurities or to increase the disinfection efficiency of sodium hypochlorite.

The leak prevention unit 200 is provided to prevent leakage in addition to the intentional discharge of sodium hypochlorite, and includes a leak detection sensor 210, an emergency electric shutoff device 220, and an emergency manual shutoff device 230 Can be.

Specifically, the leakage detection sensor 210 may be installed in the salt-free storage tank 10 and configured to detect the leakage of sodium hypochlorite, and when detecting the leakage, the notification may be performed according to a set method. Here, the set method is not particularly limited to any method, but may be, for example, performing an alarm by using a visual or audible notification device, or transmitting a notification such as a text to a terminal of a set operator.

The leak detection sensor 210 may perform notification as described above and transmit a leak signal to the emergency power cut-off device 220 so that the emergency power cut-off device 220 is operated.

The emergency electric shut-off device 220 is an outlet line 50 for outflowing sodium hypochlorite to the outside, that is, the hypochlorite storage tank 10 is connected to the hypochlorite injection device 60 for supplying sodium hypochlorite to a predetermined position. It is installed in a line or the like, and may be formed to open or close the outlet line 50.

Here, the emergency electric shut-off device 220 may be formed to be interlocked with the leak detection sensor 210 to automatically block the outflow line 50 by operating when a leak signal is received from the leak detection sensor.

The emergency manual shut-off device 230 may be installed to open and close the connection port 55 of the salt-free storage tank 10 and the outlet line by manual operation. For example, the emergency manual shut-off device 230 is provided with a switch 231 that can apply an external force to the outside of the salt-free storage tank 10, and the connection bar 232 extending from the switch is passed through the inside of the salt-free storage tank 10. It forms a length up to the connector 55 of the outlet line 50, and has a cork 233 capable of closing the connector 55 at the end of the connection bar to pressurize and release the switch 231 According to the cork 233 connected may be formed to close or open the connector 55.

However, this is an exemplary and not necessarily limited structure, and the emergency manual shut-off device 230 may be variously formed within a range in which an operator can manually open and close the connector 55.

The emergency manual shut-off device 230 as described above can be used when the emergency electric shut-off device 220 is inoperable due to a power outage or failure, and the emergency electric shut-off device 220 and the emergency manual shut-off device ( 230) through the double leakage prevention structure, the present invention can reliably prevent unintended external leakage of sodium hypochlorite.

The salt-free filling unit 300 is provided to fill sodium hypochlorite into the salt-free storage tank 10, and may include a filling line 310, a filtration filter 320, and a filling pressure sensing device 330. have.

The filling line 310 is a line connected to the hypochlorite storage tank 10 and provided with a hypochlorite filling port 315 at one end, and a tank lorry carrying the generated sodium hypochlorite in the hypochlorite filling port 315 (not shown) The etc. may be connected to allow sodium hypochlorite to be supplied into the hypochlorite storage tank 10.

The filtration filter 320 may be provided at one side of the filling line to filter impurities contained in sodium hypochlorite that are filled into the interior of the hypochlorite storage tank 10 from the hypochlorite filling port 315.

In addition, the filling pressure sensing device 330 is installed at one side of the filling line 310 to sense the pressure of sodium hypochlorite that is filled into the salt storage tank 10, and when a pressure exceeded is detected, it can notify the outside. have.

Here, the filling pressure sensing device 330 may use the set method exemplified by the above-described leak detection sensor 210, but is not necessarily limited and different methods may be used.

The present invention for filling sodium hypochlorite using the hypochlorite filling unit 300 as described above may enable a safer and cleaner filling.

In addition, the concentration-maintaining cold-salt reservoir according to an embodiment of the present invention is not described above, but as shown in the drawing, a temperature sensor 70 measuring the temperature of sodium hypochlorite and a water level sensor measuring the level of sodium hypochlorite It may further include 80, and it is natural to include a control panel 90 for control.

When the temperature sensor 70 is provided, the control panel 90 may be operated to automatically circulate the refrigerant according to the temperature of sodium hypochlorite.

2A to 2D are exemplary diagrams of a cooling coil, which is a configuration of the concentration-maintaining cold-salt storage tank of FIG. 1, and FIGS. 3A to 3C are diagrams of the built-in cooling coils among the cooling coils of FIG. These are examples.

Referring to FIGS. 2 and 3, in the concentration-maintaining type cold salt storage tank according to an embodiment of the present invention, the cooling coil 40 may be an external coil 40a or an internal coil 40b. Here, the external coil 40a refers to a coil in the form of winding to the outside of the flameproof storage tank 10, and the built-in coil 40b refers to a coil in the form of winding into the interior of the flameproof storage tank 10.

The external coil 40a and the built-in coil 40b have a basic type of winding along the outer and inner surfaces of the flameproof storage tank 10, respectively, as shown in FIGS. 2A to 2D. You can do it.

In addition, when the cooling coil 40 is a built-in coil 40b, in addition to the basic form 40b shown in Figs. 2(c) and (d), the horizontal shown in Figs. 3(a) to (c) It may be formed to be provided in one of a circular coil type (40b-1), a vertical circular coil type (40b-2), and a horizontal zigzag type (40b-3).

Specifically, the horizontal circular coil type 40b-1 may have a shape in which a circular coil is wound in the horizontal direction as shown in FIG. 3A, and the vertical circular coil type 40b-2 is As shown in (b) of 3, a circular coil may be wound in a vertical direction, and the horizontal zigzag type (40b-3) is a shading storage tank (10) as shown in (c) of FIG. It may have a shape formed in a zigzag along the horizontal direction at the bottom of the. Here, in the horizontal zigzag type 40b-3 shown in FIG. 3C, the zigzag direction may be parallel to or perpendicular to the bottom surface of the shading storage tank 10.

This cooling coil 40 must exhibit a rapid cooling performance because the temperature rises in the process of transporting and storing sodium hypochlorite in the hypochlorite storage tank 10, and storing sodium hypochlorite is stored according to the number of days used. The same cooling performance should be maintained even when the level of sodium hypochlorite is from the highest to the lowest. The vertical circular coil type (40b-2) can maximize the contact area of sodium hypochlorite stored at full water level, so it can be used in a short time. While being able to descend, it can exhibit uniform cooling performance over all areas of sodium hypochlorite, and this has the advantage of maintaining the same cooling performance with little power after a sudden descent.

In addition, the horizontal circular coil type (40b-1) and the horizontal zigzag type (40b-3) of the cooling coil 40 may be installed on the bottom of the cold storage tank 10, and the horizontal circular coil type (40b-1) In the case of a horizontal zigzag type (40b-3), it may be insignificant to decrease the temperature within a short time or to show evenly uniform cooling performance than the vertical circular coil type (40b-2) when the water level is full. Although it has the advantage of cooling sodium hypochlorite no matter what level the sodium chlorate is at, the water level is relatively low due to the use of sodium hypochlorite or the moment when sodium hypochlorite is transported and injection into the hypochlorite reservoir (10) begins. When forming, it is possible to show or maintain the cooling performance better with less power than the vertical circular coil type (40b-2).

Preferably, of the horizontal circular coil type (40b-1) and the horizontal zigzag type (40b-3), it is good to be provided in a horizontal circular coil type (40b-1), which allows the cooling coil 40 to be placed inside the cold storage tank 10 As it is very difficult to fix the position at the outside, it is easy to connect to the outside when manufacturing to have support from the outside, and when forming multiple layers by stacking single-layer circular coils, welding etc. can be easy, and the flow of refrigerant is also It has the advantage of excellent strength because it is smooth in a circular shape and easy to distribute stress.

In addition, although not shown in the drawing, the cooling coil 40 may be an internal coil embedded in the surface of the salt-free storage tank 10. As described above, the inner coil is one of the inner/outer surfaces based on the material of stainless steel, titanium, polyethylene (PE, Poly Ethylene), fiber reinforced plastics (FRP), and carbon steel as described above. Teflon, polyvinyl chloride (PVC, Poly Vinyl Chloride), chlorinated polyvinyl chloride (C-PVC, Chlorinated Poly Vinyl Chloride), rubber (rubber), epoxy, etc. that can be prepared when formed to lining or coating Before lining or coating is made, the cooling coil 40 is placed on the inner or outer surface of basic materials such as stainless steel, titanium, polyethylene (PE, Poly Ethylene), fiber reinforced plastics (FRP), and carbon steel. After first forming, it can be produced through a lining or coating process.

That is, the embedded coil may have a form in which the cooling coil 40 is embedded between the basic body of the salt-free storage tank 10 and the lining portion or the coating portion. Such an internal coil can minimize the exposure of the cooling coil 40 to sodium hypochlorite, thereby reducing the risk of corrosion and the like.

On the other hand, the concentration-maintaining cold-salt storage tank according to an embodiment of the present invention further includes an expansion unit 400 and a circulation unit 410 to increase cooling efficiency when the cooling coil 40 is a built-in coil 40b. May be.

4 is an exemplary view of a concentration-maintaining cold-salt storage tank provided with an expansion part and a circulation part according to an embodiment of the present invention.

Referring to FIG. 4, the expansion part 400 may be provided on one side of the cooling coil 40. In addition, the expansion unit 400 may be configured to include two symmetrical curved surfaces 405, wherein the two curved surfaces 405 may be formed so that the bending directions face each other. That is, the expansion part 400 may be formed in a shape that narrows and widens from one side to the other, and forms a passage that flows toward the cooling coil 40 so that the density of sodium hypochlorite increases and decreases. I can.

The circulation part 410 may be formed to induce the flow of sodium hypochlorite to the expansion part 400. To this end, the circulation unit 410 may include a means for intentionally controlling the flow of sodium hypochlorite, such as a pump or a fan, and may be installed so that the circulation direction is the expansion unit 400.

Looking at the operation of the expansion unit 400 and the circulation unit 410 as described above, sodium hypochlorite, which is guided to the expansion unit 400 by the circulation unit 410, increases in density as it passes through the expansion unit 400. As it is suddenly lowered, the volume expands instantly.

Through this, the temperature of sodium hypochlorite is rapidly lowered, and the cooling efficiency can be doubled by reaching the cooling coil 40 in this state.

In addition, the concentration-maintaining type cold-salt storage tank according to an embodiment of the present invention may divide and store sodium hypochlorite in order to increase cooling efficiency and effectively manage sodium hypochlorite.

5 is an exemplary diagram of a concentration-maintaining type cold-salt storage diagram in which sodium hypochlorite is divided and stored according to an embodiment of the present invention.

Referring to FIG. 5, at least two partitioned spaces 505 may be formed by installing one or more partition walls 500 in the salt-free storage tank 10. In addition, the cooling coil 40 may be provided for each individual divided space 505 and all may be connected to the cooling device 20. In addition, each divided space 505 may be provided with a filling line (not shown) capable of filling sodium hypochlorite and an outlet line (not shown) capable of outflowing sodium hypochlorite to the outside.

Such a structure can increase cooling efficiency by increasing the cooling rate of sodium hypochlorite by first reducing the surface area of sodium hypochlorite, and controlling the sodium hypochlorite in each divided space 505 individually while controlling the concentration or temperature conditions. There is an advantage that sufficient sodium hypochlorite can be selected and used.

In addition, in the divided structure as described above, the partition wall 500 may be provided with an inlet valve 510 and a water outlet valve 520 for connecting the divided spaces 505 to each other. The inlet valve 510 is a valve through which sodium hypochlorite is introduced from the other divided space 505 on the basis of the one divided space 505, and the outlet valve 520 is a valve that discharges sodium hypochlorite into the other divided space 505. It is a valve.

In addition, a temperature sensor 530 and a flow induction device 540 may be provided for each divided space 505. The flow induction device 540 is a device that intentionally generates a flow so that sodium hypochlorite flows through the inlet valve 510 and the outlet valve 520.

Looking at the operation of the concentration-maintaining cold salt storage tank according to an embodiment of the present invention due to such a structure, the temperature of sodium hypochlorite filled in each divided space 505 by the temperature sensor 530 provided in each divided space 505 is It can be measured individually.

At this time, when a temperature deviation occurs between one divided space and another divided space, sodium hypochlorite between the two divided spaces is mixed to reduce the temperature deviation, or the refrigerant may be circulated only in the divided space with a high temperature.

For this reason, while storing and using sodium hypochlorite of different concentrations, it is also possible to adjust the concentration or temperature by mixing with each other if necessary.

On the other hand, the partition wall 500 installed to partition the interior of the salt-free storage tank 10 is preferably formed of a material having heat insulation so that heat exchange between the divided spaces 505 is not easy.

In addition, the concentration-maintaining type cold storage tank according to an embodiment of the present invention, when the cooling coil 40 is a built-in coil (40b), is installed under the cold storage tank 10 to adjust the height of the cold storage tank 10 It may be configured to further include 600.

6A and 6B are diagrams illustrating the height adjustment of the concentration-maintaining type cold salt storage tank according to an embodiment of the present invention.

Referring to Figure 6, the elevating portion 600 is a plurality of elevating plate 610 that supports the bottom of the cold storage tank 10, and the elevating plate 610 at the bottom of the elevating plate 610. It may be configured to include a cylinder 620.

If the height of the salt-free storage tank 10 is adjusted through the elevating and descending part 600, the cooling coil 40 installed inside the salt-free storage tank 10 may change in height with respect to the interior of the salt-free storage tank 10. Through this, it may be possible to adjust the height of the cooling coil 40 to a more efficient cooling position according to the residual level of sodium hypochlorite.

In addition, the concentration-maintaining type cold salt storage tank according to an embodiment of the present invention may further include a spherical fluid sensing device 700 fixedly installed to rotate on one side of the cold salt storage tank 10. Here, a gyro sensor (not shown) may be embedded in the fluid sensing device 700.

7 is an exemplary view of a concentration-maintaining type cold salt storage tank equipped with a fluid sensing device according to an embodiment of the present invention.

Referring to FIG. 7, the fluid sensing device 700 installed at one side of the salt storage tank 10 can freely rotate in its place due to the shape of a sphere, and thus, it rotates even when an external force occurs due to the fluctuation of sodium hypochlorite. This may be possible, and during rotation, the built-in gyro sensor can detect the tilt.

The gyro sensor that detects the inclination can transmit a sensing signal to the interlocked receiver, and through this, an operator or the like can easily grasp the degree of fluctuation of the fluid and cope with this.

For example, in the case of an earthquake, it will seriously cause the fluctuation of sodium hypochlorite, which may lead to the leakage of sodium hypochlorite, so that the worker can recognize such fluctuation and take measures to prevent the leakage of sodium hypochlorite.

In addition, even if the level of the salt-free storage tank 10 is not aligned or the filling pressure is excessive, the operator can detect this and take countermeasures.

In addition, although not shown in the drawing, the concentration-maintaining type cold salt storage tank according to an embodiment of the present invention is separately attached to one side of the cold salt storage tank 10 in addition to the spherical fluid sensing device as described above. ) Can be detected, and earthquakes can be detected through this.

8 is a test report for detecting the effective chlorine concentration stored in sodium hypochlorite in a concentration-maintaining hypochlorite storage tank of an embodiment of the present invention according to the standards, standards and labeling standards of water treatment agents (Ministry of Environment Notification No. 2017-190, 2017.10. 9 is a test report for detection of sodium hypochlorite chlorate and bromate stored in a concentration-maintaining cold-salt storage tank of an embodiment of the present invention in accordance with the standards, specifications and labeling standards of water treatment agents (Ministry of Environment Notice No. 2017-190, 2017.10.23).

8 and 9, the concentration-maintaining cold salt storage tank according to an embodiment of the present invention accurately maintains the effective chlorine concentration in accordance with the standards prescribed by the Ministry of Environment and minimizes chlorate and bromate through the structure described above. It can be seen that there is an effect.

Embodiments of the present invention have been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. You can understand. Therefore, the embodiments described above are illustrative and non-limiting in all respects.

10: cold storage tank 20: cooling device
30: connection pipe 40: cooling coil
40a: external coil 40b: built-in coil
50: outlet line 55: outlet line connector
60: hypochloric acid injection device 70: temperature sensor
80: water level sensor 90: control panel
100: washing unit 110: water supply pipe
120: injection pipe 125: injection nozzle
130: strainer 140: ionizer
200: leak prevention unit 210: leak detection sensor
220: emergency electric shut-off device 230: emergency manual shut-off device
231: switch 232: connection bar
233: cork 300: cold dye filling part
310: filling line 315: hypochlorite filling port
320: filtration filter 330: filling pressure sensing device
400: expansion part 405: curved surface
410: circulation part 500: bulkhead
505: divided space 510: inlet valve
520: water outlet valve 530: temperature sensor
540: flow induction device 600: elevating part
610: elevating plate 620: cylinder
700: fluid detection device

Claims (12)

In the hypochlorite storage tank for storing sodium hypochlorite,
The tea salt storage tank,
Hastelloy series installed inside to keep the concentration by cooling the stored sodium hypochlorite by receiving the freon refrigerant through the connection pipe connected to the cooling device, and to deliver the freon refrigerant cooled down the sodium hypochlorite back to the cooling device , Titanium, graphite, including a single material or a cooling coil of a composite material thereof,
Further comprising a leak prevention unit for preventing the leakage of sodium hypochlorite,
The leak prevention part,
A leak detection sensor that detects the leakage of the stored sodium hypochlorite and notifies when a leak is detected;
An emergency electric shut-off device installed on an outflow line for outflowing the stored sodium hypochlorite to the outside, and interlocking with the leak detection sensor to automatically block the outflow line when a leak of sodium hypochlorite is detected, and
It is installed to open and close the connection between the salt storage tank and the outlet line, and includes an emergency manual shut-off device that is manually operated,
The Hastelloy-based material,
Hastelloy-A, Hastelloy-B, Hastelloy B-2, Hastelloy-C, Hastelloy C-4, Hastelloy C-22, Hastelloy C-276, Hastelloy-D, Hastelloy-F, Ha Concentration-maintaining type cold-salt storage tank, characterized in that one of Stelloy-G, Hastelloy G-3, Hastelloy G-30, and Hastelloy-X.
The method of claim 1,
The cooling coil,
A concentration-maintaining type cold-drying storage tank, characterized in that it is an external coil wound to the outside of the cold-drying storage tank or a built-in coil wound inside the cold-drying storage tank.
The method of claim 1,
The tea salt storage tank,
Stainless steel, titanium, polyethylene (PE, Poly Ethylene), fiber reinforced plastics (FRP, Fiber Reinforced Plastics), or carbon steel alone, or Teflon, polyvinyl chloride (PVC, etc.) on one or more of the inner and outer surfaces. Poly Vinyl Chloride), chlorinated polyvinyl chloride (C-PVC, Chlorinated Poly Vinyl Chloride), rubber (rubber), characterized in that formed to lining or coating epoxy, a concentration-maintaining cold-staining storage tank.
The method of claim 1,
The tea salt storage tank,
Further comprising a washing unit for washing the inside of the storage tank,
The washing unit, after filtering the water supply, ionizing the water to clean the inside of the storage tank.
delete The method of claim 1,
The tea salt storage tank,
Further comprising a hypochlorite filling unit for filling sodium hypochlorite into the storage tank,
The shading filling part,
A filling line connected to the salt storage tank and provided with a hypochloric acid filling port at one end;
One or more filtration filters provided on one side of the filling line, and
Concentration-maintaining type cold salt storage tank comprising a filling pressure sensing device installed on one side of the filling line to sense the pressure of sodium hypochlorite to be filled, and to notify the outside when the pressure is exceeded.
The method of claim 2,
The tea salt storage tank,
When the cooling coil is a built-in coil,
An expansion part provided on one side of the cooling coil and instantaneously expanding the volume of sodium hypochlorite passing through, and
Concentration-maintaining salt storage tank further comprising a circulation part for inducing the flow of sodium hypochlorite to the expansion part.
The method of claim 1,
The tea salt storage tank,
One or more partition walls are installed to form at least two divided spaces,
The cooling coil is provided for each individual divided space,
A concentration maintaining type cold salt storage tank, characterized in that a filling line for filling sodium hypochlorite and an outlet line for outflowing are installed in each of the divided spaces.
The method of claim 8,
The tea salt storage tank,
The partition wall is provided with an inlet valve and a water outlet valve for connecting the divided space,
Each of the divided spaces is provided with a temperature sensor and a flow guide device for flowing sodium hypochlorite to the other divided spaces.
The method of claim 2,
The tea salt storage tank,
When the cooling coil is a built-in coil,
A concentration-maintaining salt storage tank, characterized in that it further comprises an elevating portion installed at the lower side to adjust the height of the salt storage tank, the height of the cooling coil installed therein can be adjusted.
The method of claim 1,
The tea salt storage tank,
A concentration-maintaining type cold salt storage tank that further includes a spherical fluid sensing device that has an internal gyro sensor and is fixedly installed on one side to rotate by the fluctuation of sodium hypochlorite.
The method of claim 1,
The tea salt storage tank,
Concentration-maintaining cold-salt storage tank, characterized in that it is provided with a gyro sensor to detect the shaking of the storage tank.

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