The method of obtaining the various phases of the condition of the coolant and the system for its implementation

 

(57) Abstract:

The invention is intended for use in heat exchange technology. The method includes receiving a different phase state of the carrier by placing it in an area with a temperature different from the temperature of the coolant, twisting in a spiral, turning the coolant from one state to other States as promote it in a spiral, with the subsequent removal in one of these States to the consumer, and the velocity of the fluid in a spiral, and the pressure in each of its cross-section to withstand constant by changing the size of the flow area of the spiral progresses coolant along the length of the spiral. The size of the bore of the helix increases from the entrance of the spiral to its output when the coolant temperature is lower than the temperature of the environment of the spiral. The size of the bore of the helix decreases from the entrance of the spiral to its output when the coolant temperature is above the temperature of the environment of the spiral. The invention also includes a system for obtaining various phases of the condition of the fluid, comprising a housing, inside which is placed a spiral with moving inside this is one of the pipelines, and the spiral is made in the form of two placed one inside the other at a certain distance from one another coaxially spaced shells, between which is placed a flat strip of constant width, on one edge of the outer shell, fixed to the other edge on the inner shell and wrap the membrane in a spiral with variable increasing step from the entrance of the spiral to its output when the coolant temperature is lower than the temperature of the environment surrounding the coil, and a variable decreasing step from the entrance of the spiral to its output when the coolant temperature is above the temperature of the environment of the spiral, to both ends of the shells attached on the plate with the Central and peripheral holes, a Central hole connected with the inner cavity of the inner shell, the peripheral hole of the first plate connects the inlet pipe with the cavity formed by the first step of wrapping the tape and the adjacent surfaces of the membranes, peripheral hole of the second plate connects the output pipeline with a cavity formed by the last round of the tape and the adjacent surfaces of the shells, and the case is directly connected to the outer shell. Shell is made of made of conical shape and is placed at a distance from one another, the width of the flat belt. The invention allows to increase the heat exchange surface and to achieve a more uniform distribution of the hot gas flow in cross flow annulus. 2 S. and 4 C.p. f-crystals, 2 Il.

The invention relates to the field of heat transfer equipment and can be used for various phases of the condition of the coolant, the temperature of which is different from the temperature of the environment surrounding the carrier.

There is a method to obtain different phase States of the carrier, namely, that on the heat exchange surface, the temperature of which is above the temperature of fluid under pressure in the form of individual jets serves the heated working fluid, which is drawn perpendicular to this surface and then removed from it in the gaps between jets in a direction opposite to the direction of these jets, in the output collector (see USSR author's certificate 694761, MKI F 28 D 3/00, 1979).

In this way the working fluid, such as water, enters into the inlet manifold and then through small holes in a multitude of jets is directed under pressure at the heat exchange surface is perpendicular to it. Spreading out on deploom which the heated working fluid begins to move in the direction opposite direction nakaumi jets. Through the other hole that size much more than the first heated fluid is delivered to the output manifold and then to the consumer.

The disadvantage of this method is that for various phases of the condition of the coolant requires a significant heat exchange cavity, resulting dimensions of the unit are very significant.

Also known system for producing different phase States of the fluid containing the source of heat associated with the heat exchanger, made in the form of radially arranged flat coils, inside of which circulates the heated working fluid (see USSR author's certificate 157698, MKI F 28 D 7/08, 1963).

In this system as a heat-exchange device is a tubular heat exchanger in the form of radially arranged coils with alternating short and long turns. The coils are connected between themselves an annular reservoir for entry and exit of the coolant. The proposed heat exchanger placed in a cylindrical flue boiler.

This device allows to increase the heat exchange surface and DOS is CLASS="ptx2">

The disadvantage of this system is that its design is very complex due to the use of tubular coil heat exchanger.

The closest known methods by the number of matching characteristics and the achieved result is a way to obtain different phase States of the carrier by placing it in an area with a temperature different from the temperature of the coolant, twisting in a spiral, turning the coolant from one state to other States as promote it in a spiral with the subsequent allotment in one of these States to the consumer (see USSR author's certificate 1032319, MKI F 23 D 7/02, 1983).

In this way the coolant, for example water, is supplied to the heat exchanger through the inlet manifold, which is directly connected with the coil, where the working fluid, twisting in a spiral, while moving it to the output collector. As it moves in a spiral, this liquid is heated flue gases production line. The temperature of the working fluid increases and after reaching a certain size, it becomes another state, for example, in pairs. In this case, if the length of the coil is large enough or Nagoga is, the twisting and the heating fluid is in the tube with a constant reduced cross-section, which leads to a significant increase in the pressure inside the pipe at the transition from one state of the coolant in the other. This significantly increases the hydraulic resistance of the coil, as well as possible leakage and failure of the coil.

The closest technical solution to this proposed system, the number of matching signs and achieved result is a system for producing different phase States of the carrier, comprising a housing, inside which is placed a spiral with moving inside this spiral coolant temperature different from the temperature of the environment of the spiral, the input and output pipelines (see USSR author's certificate 1032319, MKI F 28 7/02, F 24 1/16, 1983).

In this system, the coil is placed in the space between the cylindrical housing and the inner shell. One end of this spiral is connected with an inlet pipe through which flows a coolant, and the other with the outlet line, which is associated with the consumer.

For heating the coolant is used, for example, othodyashie cylindrical housing and the inner shell, washing the coils of the spiral. Secondly, the additional gas in this space flows through the slit made inside the cowling. Depending on the flue gas temperature and the magnitude of the excess pressure it is possible to obtain different values of temperature. When the fluid moves through the spiral can change its phase state. The temperature also depends on how quickly or slowly he moves inside of the spiral.

It should be noted the fact that as the tube, from which the spiral has a constant flow cross-section, the pressure inside the spiral as it moves coolant from the inlet pipe to the output could increase significantly. Therefore, the disadvantage of this system is the fact that in this construction each helix is designed to receive a specific phase of the carrier without disturbing the tightness of the spiral. In the case of receiving a different phase of the spiral is replaced by a new one with more thin or thick-walled tube is made of a spiral, with full preservation of the integrity of the structure. In some cases, the spiral take with fairly thick walls, so as to obtain all phases of sostoianie is to increase the efficiency and reliability of the system while generating different phase States of the carrier, which uses a method of providing different phase States of the carrier.

The objective in the proposed method for different phase States of the carrier by placing it in an area with a temperature different from the temperature of the coolant, twisting it in a spiral, turning the coolant from one state to other States as promote it in a spiral with the subsequent allotment in one of these States to the user, is achieved by the fact that the velocity of the fluid in a spiral, and the pressure in each of its cross-section to withstand constant by changing the size of the flow area of the spiral progresses coolant along the length of the spiral, the size of the bore of the helix increases from the entrance of the spiral to its output when the coolant temperature is lower than the temperature of the environment of the spiral, and the size of the bore of the helix decreases when the temperature is above the temperature of the environment of the spiral.

The objective in the system to obtain different phase States of the carrier, comprising a housing, inside which is placed a spiral with moving inside this Speer is th pipelines, is achieved by the fact that the spiral is made in the form of two placed one inside the other at a certain distance from each other coaxially spaced shells, between which is placed a flat strip of constant width, on one edge of the outer shell, fixed to the other edge on the inner shell and wrap the membrane in a spiral with variable increasing step for increasing the flow area of the spiral from the entrance of the spiral to its output when the coolant temperature is lower than the temperature of the environment surrounding the coil, and a variable decreasing step for decreasing the flow area of the spiral from the spiral entrance to its exit, provided when the coolant temperature is above the temperature of the environment of the spiral, to both ends of the shells attached on the plate with the Central and peripheral holes, a Central hole connected with the inner cavity of the inner shell, and a peripheral hole of the first plate connects the inlet pipe with the cavity formed by the first step of a coil and the adjacent surfaces of the membranes, peripheral hole of the second plate connects the output pipeline with a cavity formed last round linen the glasses are made of cylindrical shape and placed at a distance from each other, the width of the flat belt, and the shell is made of conical shape and is placed at a distance from each other equal to the width of the flat belt.

The above new features in this way, and in this system to obtain different phase States of the carrier are significant, as they are sufficient to distinguish this method to obtain different phase States of the carrier against all known similar ways, and this system from all known similar systems, and in the presence of these features achieve a positive effect, namely efficiency and reliability by maintaining in each section of the spiral constant speed and pressure by changing the cross-section of the spiral.

In Fig.1 presents the scheme of the system in which the coolant has a temperature lower than the environment surrounding the coil, which moves the carrier of Fig.2 - scheme of work, in which the coolant has a temperature higher than the temperature of the environment surrounding the spiral.

The system includes a housing 1 in which is placed a spiral, made in the form of the outer shell 2 and the inner shell 3, which rata 4 constant width, on one edge of the outer shell 2, fastened the other end to the inner shell 3 and is wound on the shell in a spiral with variable step from the entrance of the spiral to its release, to both ends of the shells 2 and 3 are attached on the plate 5 and 6 with the Central holes 7 and 8 and the peripheral holes 9 and 10, and the holes 7 and 8 are connected with the inner cavity 11 of the shell 3 and the hole 9 connects the inlet pipe 12 with a cavity 13 formed by the first step of wrapping tape 4 and the adjacent surfaces of the shells 2 and 3, and the hole 10 connects the output line 14 with a cavity 15 formed by the last round of the tape and the adjacent surfaces of the shells 2 and 3.

The system providing the various phases of the condition of the coolant and uses this method works as follows.

As a first example let's consider a system in which the coolant has a temperature lower than the temperature of the environment surrounding the coil, which moves the carrier (see Fig.1).

The flow of the hot gases coming into the system under a certain pressure, is moved from left to right. The stream washes the spiral from the outside of the hand located between korodi through hole 8. The temperature of the gas stream passing the spiral will be smaller than before the spiral, as part of the heat is transferred to the coolant. The coolant enters the coil through the inlet pipe 12, the hole 9 into the cavity 13 under a certain pressure. In this case, as the coolant temperature rises, which leads to an increase in its volume and increasing the velocity of the fluid inside the spiral. In this arrangement, increasing its speed and pressure will not happen for the reason that the throttle cross section of the spiral increases as it moves inside the spiral. The velocity and pressure in each section of the spiral will be permanent, since the tape 4 coils on the inner shell 3 with increasing step for increasing the flow area of the spiral. When this fluid as it moves in a spiral, it can change its phase state.

This design is the problem of increase of the walls of the spiral, as it is observed in known heat exchangers. Maintaining the speed and pressure constant inside the spiral, provide good efficiency and reliability of the whole structure.

Now consider an example of system operation, the cat is Sitel (see Fig.2).

Via the inlet pipe 12 and through the opening 9, the fluid having a very high temperature, is fed into the cavity 13 of the spiral. From the outside of the spiral, located between the housing 1 and the shell 2, as well as through the cavity 11 is moving stream having a lower temperature than the temperature of the coolant. When you wrap this thread spiral is heated past due to heat transfer. The temperature starts to decrease, which will affect the speed and the volume occupied by the fluid. Since in this construction the tape 4 coils on the shell 3 with decreasing step for decreasing the flow area of the spiral, as the temperature decreases, the fluid volume of the latter is reduced and simultaneously decreases the cross-section of the spiral, which moves the coolant. This combination leads to the fact that the velocity and pressure in each section of the spiral will be maintained constant. During the movement of the fluid in a spiral, the latter can change its phase state, passing from one form to another.

In this design there is no problem of strengthening the walls of the spiral, so that the pressure in each section of the support is, the AK it can be seen from Fig.1 and 2.

Thus, this design, which allows this method to obtain different phase States of the carrier, provides a relatively good reliability as in the case where the coolant temperature is lower than the temperature of the environment surrounding the coil, which moves the coolant, and when the coolant temperature is above the temperature of the environment surrounding the coil, which moves the coolant.

1. The method of obtaining the various phases of the condition of the coolant by placing it in an area with a temperature different from the temperature of the coolant, twisting in a spiral, turning the coolant from one state to other States as promote it in a spiral, with the subsequent removal in one of these States to the consumer, wherein the velocity of the fluid in a spiral, and the pressure in each of its cross-section to withstand constant by changing the size of the flow area of the spiral progresses coolant along the length of the spiral.

2. The method according to p. 1, characterized in that the size of the bore of the helix increases from the entrance of the spiral before it provided Audica fact, what size bore of the spiral decreases from the entrance of the spiral to its output when the coolant temperature is above the temperature of the environment of the spiral.

4. System for producing different phase States of the carrier, comprising a housing, inside which is placed a spiral with moving inside this spiral coolant temperature different from the temperature of the environment of the spiral, the input and output pipelines, characterized in that the spiral is made in the form of two placed one inside the other at a certain distance from one another, coaxial spaced shells, between which is placed a flat strip of constant width, on one edge of the outer shell, fixed to the other edge on the inner shell and wrap the membrane in a spiral with variable increasing step from the entrance of the spiral to its output, when the coolant temperature is lower than the temperature of the environment surrounding the coil, and a variable decreasing step from the entrance of the spiral to its output when the coolant temperature is above the temperature of the environment of the spiral, to both ends of the shells attached on the plate with the Central and peripheral holes, and tiny connects the inlet pipe with the cavity, educated first step loop tape and the adjacent surfaces of the membranes, peripheral hole of the second plate connects the output pipeline with a cavity formed by the last round of the tape and the adjacent surfaces of the shells, and the case is directly connected to the outer shell.

5. The system under item 4, wherein the shell is made of cylindrical shape and placed at a distance from one another equal to the width of the flat belt.

6. The system under item 4, wherein the shell is made of conical shape and is placed at a distance from one another equal to the width of the flat belt.

 

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FIELD: boiler installation technology.

SUBSTANCE: boiler installation has boiler provided with burners, hot-water heater, heat exchangers passing through boiler and hot water heater, economizer and heat exchanger with heat exchanger passing it through. All the units of boiler installation are fixed at the same platform. Case of hot-water heater has several shells; cavities among shells are intended for filling with air and feed water. Cavity intended for filling with feed water is included into feed water circuit between feed water pump and economizer. Cavity intended for filling with air is connected with burners and blower. Heat exchanger disposed inside boiler is made in form of spiral envelopes disposed coaxially. Each envelope is formed by heat-exchange tubes connected with feeding and receiving boards. Envelopes having smaller diameters are shifted to combustion chamber made in form of two sequentially disposed cavities. Heat-exchange tubes of heat exchanger are made to have two sections. Tubes of the first section are made to touch tubes from the second section. Tubes of the second section are put in spiral envelopes to form gaps between surfaces of envelopes.

EFFECT: reduced size and weight of boiler installation, steam boiler and heat exchanger.

18 cl, 13 dwg

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