KR980010233A - Boiler Supplement Water Supply - Google Patents

Abstract

The present invention has been made for the purpose of improving the life and performance of the boiler by effectively performing the treatment of bubbles generated in the replenishment water supply tank and the overflow water generated when the boiler is boiling.

The present invention forms an inlet connected to the water pipe at a position lower than the lowest level of the replenishment water filled in the water tank, the inlet and the buoyancy control water is filled in the replenishment water and the valve to close the inlet by the water pressure from the water pipe Boiler configured to install the opening and closing means for opening and closing the opening and closing inlet by the interaction of the buoy and the buoyancy acting on the buoy in accordance with the level of the replenishment water in the locked state, and the overflow water storage chamber on the side of the tank Present a supplemental water supply.

The present invention prevents air bubbles in the replenishment water and prevents it from flowing into the boiler, thereby improving the performance and extending the life of the boiler, and preventing the overflow of water from boiling in the boiler so that it does not overflow into the tank. It is possible to prevent damage to the electrical system.

Description

Boiler Supplement Water Supply

The present invention relates to a supplementary water supply device for a boiler, and more particularly, a boiler supplementary water supply device having a means for preventing air from flowing into a heating circulation water of a boiler and a means for preventing an overflow due to a bubble rise. It is about.

In a typical boiler, the supplementary water supply device includes an inlet opening and closing device for opening and closing an inlet connected to a water pipe by a valve connected to the operation of a buoy in accordance with the water level in the tank, an open casting for temporarily storing water flowing from the water pipe, It consists of a supplementary water supply pipe that connects the water tank and the heating circulation pipe to supply the water in the water tank to the heating water circulation pipe.When the water in the water tank is supplemented with the heating circulation water and the water level of the water tank is lowered, the valve opens and water from the water pipe. When supplied with water, the water level rises by more than a certain height by the water flowing from the water pipe is the valve is locked to perform the action of blocking the inflow of water.

Therefore, the replenishment water and the heating circulating water in the tank are interconnected, so that the heating water in the heating circulation pipe and the replenishing water in the tank are mutually influenced to reflect each characteristic to the other party with a slight time difference.

The most important of these effects is that when bubbles are formed in the water tank, these bubbles are introduced into the heating circulation tube together with the supplementary water, and the introduced bubbles are heated and become larger, which causes a fatal effect on the life and performance of the boiler. Will cause boiling.

In other words, when air is introduced into the heating circulation water, it expands in the heating process to make the boiler boil, decreases the circulation efficiency and heating efficiency of the circulation pump, shocks the circulation system of the heating water, and oxidizes corrosion by oxygen in the bubble. This causes the problem of extremely shortening the life of the boiler.

In addition, when the boiler is boiled by bubbles in the heating circulation water, the heating circulation water flows back into the water tank to overflow the water tank while the internal air bubbles are discharged through the water tank, and the water overflowing the water tank is the electrical apparatus of the boiler (boiler body, circulation). Pumps, etc.), which causes short circuits, short circuits in internal circuits, and corrosion of the fuselage, further shortening boiler life.

Boilers that boil frequently do not last more than three to four years, and when the boiler is replaced, the pipes and joints need to be completely replaced, and the life of the circulating pump runs out before the boiler life. Boilers without boiling, on the other hand, are known to have a 7-8 year lifespan.

Boiling of the boiler, which absolutely affects the performance and durability of the boiler, is caused by the bubbles present in the heating circulation water, and the inflow of the bubbles into the heating circulation water, which is a closed pipe, is supplied with the supplementary water. do.

That is, in the conventional replenishment water supply device, an inlet connected to the water pipe is located at the upper level of the replenishment water filled in the water tank, and the inflow from the water pipe is dropped to the state exposed to the air, and the valve is operated to open and close the valve. The buoy is also configured to open and close the valve under the influence of buoyancy while floating on the surface of water, so that the inflow of replenishment water rapidly progresses and aeration occurs when the replenishment water in the tank is aerated, causing a large amount of bubbles in the replenishment water. As these bubbles enter the heating water circulation pipe through the supplementary water supply pipe, boiling of the boiler, bubble backflow into the water tank, and inflow of water from the water pipe are repeatedly generated, and boiling occurs until the boiler is temporarily stopped. This continued problem has a problem of weakening the life and performance of the boiler.

The present invention provides a means for preventing the occurrence of bubbles in the replenishment water supply tank to block the inflow of air to the circulation circulation water to improve the performance of the boiler and to extend the life of the boiler, the overflow water discharge means generated when the boiler boils It is designed to protect the electrical equipment of the boiler and to prevent oxidation corrosion of the boiler body.

1 is a basic configuration of the present invention.

2 is an enlarged cross-sectional view of the valve and the sub-unit coupling.

3 is a cross-sectional view of the a-a part of FIG.

4 is a sectional view taken along the line b-b in FIG.

5 is a supply-flow operation of the replenishment water.

6 is a valve closing operation state by the hydraulic action.

7 and 8 illustrate another embodiment of the present invention.

9 is an operating state when the boiler boils.

* Explanation of symbols for main parts of the drawings

1: Water tank 1a: Opening

1b: Outlet 1c: Inlet

1d: valve chamber 1e: flow path

2: supplemental water supply pipe 3: water pipe

4: supplemental water 5: float

6: buoyancy control water 7: valve

7a: vertical protrusion 7b: packing

7c: Euro 8: Buoy

8a: buoy bulkhead 8b: waterway

9: axis 10: arm

11: friction projection 12: overflow reservoir

13: outlet 14: outlet

15: overflow passage 16: axis

17: lever

The present invention is configured to temporarily store the inflow water from the water pipe in the open water tank to continuously supply the replenishment water to the heating circulating water of the boiler, in the configuration of the replenishment water supply device of the boiler than the lowest level of the replenishment water filled in the tank A water inlet connected to the water pipe at a low position, the water inlet being valved to close the water inlet by the water pressure from the water pipe, and a buoy to be lifted according to the level of the water in the state filled with the buoyancy control water and submerged in the water. An inlet opening and closing means is provided to open and close the inlet by the buoyancy interaction acting on the buoy, so that the inflow from the water pipe can be smoothly introduced from the inside of the supplementary water when the supplementary water level is lowered, thereby preventing the formation of bubbles in the supplementary water. Has a configuration.

1 to 4 show a basic embodiment of the present invention, wherein the water tank 1 has an opening 1a in the south, and a water outlet 1b connected to the supplemental water supply pipe 2 on one side of the lower portion. Is formed, the other side of the water tank is formed on the other side of the inlet (1c) is connected to the water pipe (3) is formed to have a function of temporarily storing the supplemental water (4) introduced from the inlet.

The opening and closing means of the inlet is composed of a buckle (5) to be filled with buoyancy control water 6 therein and a valve (7) for opening and closing the inlet in accordance with the buoyancy of the buckle.

The float 5 is installed in a float chamber 8 formed in one side wall of the water tank, and the float chamber is provided with the water level in the float chamber 8b formed in the float chamber partition 8a with the same level as the refill water level. Keep the water level.

The valve 7 is composed of a vertical protrusion 7a and a packing 7b, and is installed in the valve chamber 1b formed inside the inlet 1c. As the level of the replenishment water 4 in the water tank 1 rises and falls, When the float 5 rises and falls, the lower end portion 5a of the float 5 comes into contact with the vertical protrusion 6a of the valve so that the downward force of the float and the rising water pressure from the water pipe are mutually replaced. It is configured to open and close the valve.

4 and 5 show the operation state of the valve 6 and the float, and when the replenishment water reaches the highest level, the float rises, and the float is separated from the float so that the valve is downward from the float. The force is removed and only the upward force is applied by the hydraulic action from the water pipe.

Therefore, the packing portion 7b of the valve is in close contact with the upper wall surface of the valve chamber 1b, so that the water pipe is blocked, so that the inflow of supplemental water into the water tank is boiled.

In order to make up for the shortage evaporated in the boiler heating water circulation and heat exchange process, if the replenishment water level drops as much as the amount exiting through the outlet 1b, the water level in the subroom is also lowered, and the subsection descends. Due to the weight of the buoyancy control water filled in the lower part of the float, the vertical projection of the valve is pressed, and the pressure from the water pipe and the weight of the float are replaced, and as the water level decreases, the influence of the buoyancy applied to the float is reduced. The downward force acting on the valve becomes greater than the upward force, causing the valve to descend in the valve chamber, creating a gap between the inlet and the valve, and supplementary water from the water pipe is introduced therebetween.

If there is no replenishment water in the tank at all, the total weight of the float acts as a downward force, but if there is replenishment water, it is affected by the buoyancy, and the downward force, which is the combined force of the float weight and the buoyancy control water, is reduced. The buoyancy in the state of contact with the vertical stone of has the characteristic of increasing and decreasing with the water level.

Considering these characteristics, it is possible to reasonably derive the weight of the float corresponding to the hydraulic pressure of the water pipe by increasing the buoyancy control in the buoy in the area where the water pressure of the water pipe is high, and reducing the buoyancy control in the low water pressure. Can be.

A flow path 7c is formed on the vertical protrusion as shown in FIG. 2 for a smooth inflow of the replenishment water and a smooth ascension of the valve when the valve descends, and a flow path 1e also at the bottom of the valve chamber 1d. ).

The replenishment water supply device according to the above configuration is supplied below the replenishment water level in the water tank when the inflow water supplied from the water pipe is supplied into the water tank without being in contact with the air, and the buoyancy and buoyancy control water acting on the float The weight of the subsidiary itself including the water and the pressure of the water pipe acting on the valve are interrelated with each other in a balanced state in a constant direction so that the opening and closing of the water in accordance with the level of the replenishment water in the tank is smooth and stable change in the tank according to the supply As a result, bubbles are effectively prevented from occurring in the tank.

By inducing the boiling of the boiler and blocking the inflow of bubbles, which are the cause of corrosion of the heating water circulation system, the boiler's performance is improved and its durability is improved.

The present invention is to fill the buoyancy control water so that the supplementary water flows from the interior of the supplemental water by the interaction of the downward pressure acting on the buckle submerged in the supplementary water and the buoyancy of the supplementary water filled in the tank and the water pressure from the water pipe acting on the valve In order to achieve the basic idea to prevent the occurrence of bubbles can be configured in various ways the position of the inlet and the combination of the valve and the mouth.

7 shows the shaft 9 by protruding one side of the water inlet, and the arm 10 is formed in the spherical buoy 5 filled with the buoyancy control water 6 so that the end of the arm is coupled to the shaft 9. The friction projection 11 is formed in the arm 9 portion which is in contact with the vertical protrusion 7a of the valve, and the shaft 9 is reduced according to the decrease in the level of the supplementary water while the mouth is almost submerged in the supplemental water. The friction projection 11 is configured to open the inlet by pressing the valve while descending about the center.

8 shows the inlet port 1c on which the valve is installed on the side surface of the water tank below the replenishment water level, and protrudes the upper surface of the inlet port so as to form a shaft 16, one end of which is a vertical protrusion of the valve. 7a) and the other end is configured to combine the lever 17 to be caught on the lower end of the ball 5, the ball is lowered in accordance with the water level of the replenishment water in the ball room 8 is caught on one end of the lever shaft The other end of the lever presses the valve through the center lever, so that the water flows through the downward force acting on the buoys filled with the buoyancy control water, the buoyancy of the refill water filled in the tank, and the water pressure from the water pipe acting on the valve. By the interaction by the replenishment water to be introduced from the inside of the replenishment water can achieve the same action effect to prevent the generation of bubbles.

In addition to the above-described basic configuration, the present invention also provides an effective treatment means for overflowing the replenishment water by the effect of bubbles generated from the boiler.

That is, in the heat exchange process of the heating circulating water, the oxygen dissolved in the circulating water grows in the process of exposing to heat and forms bubbles, and when the bubbles become excessively large, boiling of the boiler occurs, and these bubbles are heated water. It is discharged into the tank through the supply pipe, and the replenishment water in the tank suddenly rises and overflows in this mine. If the water is left unattended, it flows in all directions to rust the body of the boiler and damage the electric system, especially the circulation motor. As a result, there is a need for an effective means of treating supplemental water overflow due to air bubbles.

The present invention forms the overflow water storage chamber 12 in the form of surrounding the one side of the water tank as shown in each of the means, such as to form an outlet 14 connected to the discharge pipe 13 in the lower portion, The structure which formed the overflow water flow path 15 in the side wall of the water tank which contact | connects the storage chamber 12 is shown.

In the above configuration, the depth of formation of the overflow water passage 15 is formed to be at a position slightly higher than the highest water level of the replenishment water.

9 is for explaining the operation of the above-described overflow water treatment means, when the bubbles generated inside the boiler rises through the replenishment water supply pipe, the replenishment water suddenly boils over, and when the elevated water level reaches the overflow water passage 15 Through the outlet to the overflow water storage chamber, the water filled in the overflow water storage chamber is gradually discharged through the discharge pipe (13).

Since the occurrence of overflow water due to bubble generation occurs instantaneously, and the reaction is rapidly lowered and the boiling water is repeated again after a long time, the water filled in the overflow water storage chamber is already discharged through the outlet when boiling again. .

Even if the boiler boils and the water level of the replenishment water rises rapidly, it is not overflowed to the upper part of the tank, but it is temporarily stored in the overflow water storage chamber and discharged to the sewer. Will be prevented.

On the other hand, the present invention by filling the buoyancy control water in the buoys so that the buoy is raised and lowered in a state that is almost submerged in the replenishment water to prevent a rapid increase in water level compared to the conventional water level control device when the boiler is boiling It becomes possible.

That is, the conventional water level control device is to open and close the valve by the force of buoyancy only in the state that the float floats on the surface of the replenishment water, and when the boiler boils and the water level rises by being configured so that the float does not rise any more than a certain level. Since the float is submerged below the surface of the replenishment water, the tank capacity is reduced by the submersion of the replenishment water, so that the water level rises very urgently and easily overflows, but in the present invention, the float is already submerged under the replenishment water surface. As a result, the volume is reflected in the level of the replenishment water, and thus the level rise generated when the boiler boils is more gentle, and the problems caused when the boiler is boiled by accommodating the rise in the overflow water storage chamber as described above. It can be solved.

9 is a view showing the installation state of the present invention, the supplementary water supply pipe is connected to the heating water circulation pipe, reference numeral 20 in the drawing, a boiler, 21 is a heating water circulation pipe, 22 is a hot water pipe, 23 is a buoyancy control water inlet , 24 is the overflow water, 25 is the bubble generated when the boiler is boiling, the arrow is the flow or direction of movement.

The present invention provides a rapid inflow of supplemental water by allowing the supplementary water to flow from the interior of the supplemental water by the downward force applied to the buoys filled with buoyancy control water and the buoyancy of the supplementary water filled in the tank and the hydraulic pressure from the water pipe acting on the valve. Or bubbles generated when falling in the air, and the float is submerged in the water tank to rise and fall according to the water level, thereby preventing rapid water level rise when the boiler is boiling, and separately on the side of the water tank. By forming the overflow water reservoir of the boiler even if the boiler boils over it by accommodating it in the overflow water storage room can solve the problems caused by the overflow water generation.

By preventing the occurrence of bubbles in the supplementary water, it prevents the boiler from boiling when bubbles are introduced into the heating circulating water, thereby increasing the circulation efficiency and heating efficiency of the circulation pump, and reducing the impact on the circulation of the heating water. It prevents oxidative corrosion of the heating circulation system by oxygen in the bubble, thereby increasing the life of the boiler.

In addition, even if the replenishment water overflows due to the boiling phenomenon of the boiler, it can be temporarily accommodated in the overflow water storage room and discharged in a manageable state, so that the corrosion of the boiler body caused by the overflow of water or the failure of the electrical system can be blocked in advance. It has the effect of increasing the lifespan.

Claims (5)

In the boiler's make-up water supply system, which temporarily stores the inflow water from the water pipe in the open water tank and continuously supplies the make-up water to the heating circulation water of the boiler, it is located at a position lower than the lowest level of the make-up water filled in the water tank. A water inlet connected to the water pipe is formed, and the water inlet acts on a valve to close the water inlet by water pressure from the water pipe, and a buoyancy control water is filled therein so that the water inlet and the air ball rise and fall according to the level of the water in the water. It is characterized in that the inlet opening and closing means for opening and closing the inlet by the buoyancy of the buoyancy to install the inlet water from the water pipe when the water level of the replenishment water flows smoothly from the inside of the replenishment water to prevent the formation of bubbles in the supplementary water Supplementary water supply to the boiler. The water tank (1) according to claim 1, wherein the water tank (1) has an opening (1a) in the upper portion, and a water outlet (1b) connected to the supplemental water supply pipe (2) is formed at one side of the lower portion, and the water pipe (3) at the other side of the water tank lower portion. Inlet (1c) is connected to the structure is formed, the inlet opening and closing means can form a buoyancy chamber (8) that is passed through the replenishment water on one side wall of the tank and fill the buoyancy control water (6) therein The buoy 5 is installed, and the valve chamber 1d is formed inside the water inlet 1c, and the valve 7 composed of the vertical protrusion 7a and the packing 7b is installed. The lower end 5a of the float 5 comes into contact with the vertical projection 6a of the valve and the lift from the water pipe when the float 5 rises and lowers as the level of the replenishment water 4 rises. It is configured to open and close the water inlet by allowing water pressure to be replaced with each other. According to claim 1, wherein the inlet opening and closing means protruding one side of the inlet to form a shaft (9), the spherical buoy 5 filled with the buoyancy control water (6) to form an arm (10) It is configured to be coupled to the shaft (9), the friction projection 11 is formed in the arm 9 in contact with the vertical protrusion (7a) of the valve to reduce the water level of the supplemental water in the state that the mouth is almost submerged in the supplemental water And the friction protrusion 11 presses the valve while descending about the shaft 9 so as to open the water inlet. The water inlet opening / closing means according to claim 1, wherein the inlet opening / closing means is provided on the side surface of the water tank at which the valve 7 is installed on the side of the water tank below the replenishment water level, and protrudes the upper surface of the water inlet to form the shaft 16 therein. The shaft is configured to combine a lever 17 so that one end is caught by the vertical projection 7a of the valve 7 and the other end is caught by the lower end of the float, so that the float falls as the level of the replenishment water drops. When one end of the lever is caught, the other end of the lever presses the valve and passes water by lever lever around the shaft. According to claim 1, 2, 3 or 4, the overflow storage reservoir 12 is formed in a form surrounding one side of the water tank, the lower portion of the discharge port 14 connected to the discharge pipe (13) And the overflow water treatment means having a configuration in which the overflow water passage 15 is formed on the side wall of the water tank in contact with the overflow water storage chamber 12. ※ Note: The disclosure is based on the initial application.