Regulated heat exchanger

FIELD: the invention designed for heat exchange and may be used in steam generators and heat-exchange apparatus.

SUBSTANCE: the heat-exchanger has an interior and an exterior bodies, installed between them in a ring-shaped gap along their butt-ends an input and an ring plugs, an input and an output flanges correspondingly with input and output openings, an input and an output openings on the exterior body placed correspondingly near output and input flanges. In the interior body a hollow cowl is installed. It has a body and a butt-end wall with a by-passing opening off the side of the input flange. In the ring-shaped gap an exterior heat-exchange structure is located between the exterior and interior bodies. In the ring-shaped gap an interior heat-exchange structure is installed between the interior body and the cowl. The passing section of the by-passing opening can be changed either with the help of a regulating needle fixed in the cavity of the cowl along its longitudinal axle with the help of a frame with a screw opening and turned with its sharp part in the direction of the by-passing opening of the cowl, or by installation in the by-passing opening of a replacement jet with a calibrated opening.

EFFECT: the invention expands functional possibilities of a regulated heat-exchanger.

2 dwg, 5 cl

 

The invention relates to a power system and can be used in steam generators and heat exchangers.

The known heat exchanger, containing an area of heat dissipation from the heat of the coolant and the zone of heat to malopriemlema the coolant, and the heat exchange unit for transferring heat (Patent RF №2037121, IPC 6 F 28 D 15/02, Bulletin of the Invention 16, 1995).

The disadvantage of this heat exchanger is the inability to regulate its heat capacity at given input parameters, heat and tableprivileges fluids.

Closest to the proposed invention the technical essence is a heat exchanger for gas-water containing the inner case with a heat exchange structure on the inner and outer surfaces of the inner casing, plugged on one side of the upper flange to the entrance hole from the opposite side - the output flange with the outlet and located with a gap around the inner housing outer housing with o-ring plugs on the ends, an inlet opening in the outer casing near the outlet flange and the hole in the outer casing near the inlet flange (Patent U.S. 4098325, IPC F 28 F 3/08, 1978).

The disadvantage of such a heat exchanger is nevozmozhno the ü temperature control tableprivileges coolant and heat capacity for the given input parameters (pressure, temperature, flow) heat and tableprivileges fluids.

Object of the present invention is to eliminate this drawback, namely the implementation of temperature control tableprivileges coolant and capacity of the heat exchanger for the given input parameters (pressure, temperature, flow) heat and tableprivileges fluids.

To solve this problem in a regulated heat exchanger of the first type that contains an inner and outer casing, inlet and outlet annular plugs installed in the annular gap between the inner and outer shells on their backs, the input and output flanges having respectively inlet and outlet openings, the inlet and outlet openings in the outer housing, located respectively near the output and input flanges, features:

in the inner casing to install hollow fairing consisting of a body and end wall with an overflow hole, which is located on the side of the input flange;

in the annular gap between the outer and inner housings to position the outer heat exchange structure;

in the annular gap between the inner casing and the body of the fairing to install an internal heat exchange structure;

- input and output flanges to position the end hour is her inner housing;

regulating needle to strengthen in the cavity of the fairing along its longitudinal axis with the aid of the frame with the screw hole and Orient the sharp part in the direction of the overflow drain fairing.

In some cases, of the execution of an adjustable heat exchanger of the first type features:

firstly, the frame with the screw hole to fasten on the inner surface of the Radome;

- secondly, the frame with the screw hole to fix the output flange;

- thirdly, on the output flange install thermostatic device for moving the regulating needle in the bypass hole.

To solve the problem in a regulated heat exchanger of the second type containing the inner and outer casing, input and output ring plugs installed in the annular gap between the inner and outer shells on their backs, the input and output flanges having respectively inlet and outlet openings, the inlet and outlet openings in the outer housing, located respectively near the output and input flanges, features:

in the inner casing to install hollow fairing consisting of a body and end wall with an overflow hole, which is located on the side of the input flange;

in the annular gap between the outer and inner housings to position outside the second heat transfer structure;

in the annular gap between the inner casing and the body of the fairing to install an internal heat exchange structure;

- input and output flanges to position the end part of the inner casing;

- in the bypass hole to fit the replacement jet with a calibrated orifice.

The essence of an adjustable heat exchanger is illustrated by drawings, where figure 1 shows a heat exchanger with the regulatory needle fixed in the cavity of the fairing, and figure 2 - heat exchanger with removable nozzle.

In figure 1, 2 the following notation:

1 - the internal casing; 2 - internal heat exchange structure; 3 - input ring cover; 4 - inlet inlet flange; 5 - inlet opening of the outer casing; 6 - input flange; 7 - output ring cover; 8 - outlet output flange; 9 - exit opening of the outer casing; 10 - output flange; 11 - calibrated orifice of the nozzle; 12 - annular gap between the inner and outer housings; 13 - annular gap between the inner case and fairing; 14 - body fairing; 15 - outer heat exchange structure; 16 - the outer body; 17 - bypass hole; 18 - frame; 19 - regulating needle; 20 - replaceable nozzle; 21 - end wall of the fairing; 22 - the Central channel.

Adjustable heat exchanger of the first type has an internal 1 and narozny housing, input 3 and the output 7 of the ring plugs (figure 1).

Input 3 and the output 7 of the ring plugs installed in the annular gap 12 between the inner 1 and outer 16 buildings on their backs.

Input 6 and output flanges 10 are respectively input 4 and output 8 holes.

On the outer housing 16 is made of the input 5 and output 9 holes located respectively near the output 10 and the input 6 of the flanges.

In the inner casing 1 is a hollow fairing 14.

The fairing consists of a body 14 and the end wall 21 with an overflow hole 17.

The bypass opening 17 is located on the side of the input flange 6.

In the annular gap 12 between the outer 16 and inner 1 buildings located outside of the heat exchange structure 15.

In the annular gap 13 between the inner housing 1 and the housing 14 mounted fairing internal heat exchange structure 2.

Input 6 and output flanges 10 are located at end portions of the inner housing 1.

Regulating needle 19 is hardened in the cavity of the fairing along its longitudinal axis by the frame 18 with the screw hole. Regulating needle 19 is facing acute part in the direction of the overflow drain 17 fairing.

The following options adjustable heat exchanger of the first type.

Frame 18 with the screw hole mounted on the inside is it the surface of the fairing.

Frame 18 with the screw hole is fixed to the output flange 10.

On the output flange 10 is installed thermostatic device that moves the regulating needle 19 in the bypass opening 17.

Adjustable heat exchanger of the second type contains the inner 1 and outer housing 16, the input 3 and the output 7 of the ring plugs (figure 2).

Input 3 and the output 7 of the ring plugs installed in the annular gap 12 between the inner 1 and outer 16 buildings on their backs.

Input 6 and output flanges 10 are respectively input 4 and output 8 holes.

On the outer housing 16 is made of the input 5 and output 9 holes located respectively near the inlet 6 and outlet flanges 10.

In the inner casing 1 is a hollow fairing. The fairing consists of a body 14 and the end wall 21 with an overflow hole 17.

The bypass opening 17 is located on the side of the input flange 6.

In the annular gap 12 between the outer 16 and inner 1 buildings located outside of the heat exchange structure 15.

In the annular gap 13 between the inner housing 1 and the fairing installed internal heat exchange structure 15.

Input 6 and output flanges 10 are located at end portions of the inner housing 1.

In the bypass opening 17 is removable nozzle 20 with a calibrated orifice 11.

The devices work as follows.

Heat the coolant through the inlet 4 into the inlet flange 6 for the given parameters (pressure, temperature, flow) enters the Central channel 22, which is divided into two streams.

The first stream of fluid is directed into the annular gap 13 between the inner housing 1 and the fairing. In the outdoor heat exchanger structure 15 is located in the annular gap 13 between the outer 16 and inner 1 buildings, a lot of heat from the coolant.

The second stream through the bypass opening 17 in the end wall 21 of the fairing is inside the fairing and the heat exchange is not involved.

For Radome flows of coolant are mixed among themselves and through the hole 8 in the output flange 10 leaving the heat exchanger.

Telepresense coolant for the given parameters (pressure, temperature, flow) enters through an inlet opening 5 in the outer housing 16 in the annular gap 12 between the outer 16 and inner 1 buildings.

Passing through located in the annular gap 12 of the outer heat exchange structure 15, the coolant receives heat transferred through the inner housing 1.

Through the hole 9 in the outer housing 16 telepresense the coolant leaves the heat exchanger.

Temperature TEPLOSET the lei at the output and efficiency of the heat exchanger depends on the heat flow of the coolant through the internal heat exchange structure 2. This regulate flow by changing the flow area of the by-pass hole 17 in the end wall 21 of the fairing.

The flow area of the overflow drain 17 is changed, for example, by moving along the longitudinal axis of the fairing regulating needle 19, the edge of which is included in the bypass opening 17.

Regulating needle 19 is threaded and screwed into the screw hole of the frame 18.

If the frame 19 is fixed to the fairing, it can be made in the form of a perforated ring threaded on the inner surface.

The rotation regulating needle 19 through the outlet 8 outlet flange 10.

The tail part of the regulatory needle 19 may be hermetically displayed outside of the heat exchanger.

When the rotation regulating needle 19 is moved along the axis of the heat exchanger, fully or partially overlapping section of the overflow drain 17 of the end wall 21 of the fairing.

The more overlapped section of the overflow drain 17, the greater the heat flow of the coolant through the internal heat exchange structure 2 and, correspondingly, the higher the capacity of the heat exchanger and the temperature tableprivileges fluid outlet of the heat exchanger.

For automatic regulation of the heat output of the heat exchanger can be used thermostat, set the Central channel 22 on the output flange 10.

In this case, the thread of the regulating needle 19 is not performed, and the longitudinal displacement of the regulating needle 19 carry out active element of thermostat, for example a bimetallic plate.

If you want to configure the heat exchanger at a certain power to work for an extended period of time, instead of regulating needle 19 in the bypass opening 17 installing the replaceable nozzle 20 with a calibrated orifice 11.

The size of an orifice 11 is chosen such as to provide the necessary capacity of the heat exchanger.

The change of the nozzles 20 is carried out through the inlet 4 into the inlet flange 6.

Both types of devices allow you to adjust the temperature tableprivileges of the coolant and the power of the heat exchanger for the given input parameters (pressure, temperature, flow) tableprivileges and heat-transfer fluids.

The invention extends the functionality of an adjustable heat exchanger.

1. Adjustable heat exchanger containing the inner and outer casing, input and output ring plugs installed in the annular gap between the inner and outer shells on their backs, the input and output flanges having respectively inlet and outlet openings, the inlet and outlet openings in the outer casing, spaced according to the public near the output and input flanges, wherein the inner housing has a hollow fairing consisting of a body and end wall with an overflow hole, which is located on the side of the input flange, the annular gap between the outer and inner housings is located outside of the heat exchange structure, the annulus between the inner casing and the body of the fairing installed internal heat exchange structure, the input and output flanges are installed at the end part of the inner housing, regulating needle fixed in the cavity of the fairing along its longitudinal axis with the aid of the frame with the screw hole facing acute part in the direction of the overflow drain fairing.

2. Adjustable heat exchanger according to claim 1, characterized in that the frame with the screw hole is fixed on the inner surface of the fairing.

3. Adjustable heat exchanger according to claim 1, characterized in that the frame with the screw hole is fixed to the output flange.

4. Adjustable heat exchanger according to claim 1, characterized in that the output flange mounted thermostatic device that moves the regulating needle in the bypass hole.

5. Adjustable heat exchanger containing the inner and outer casing, input and output ring plugs installed in the annular gap between the inner and outer housings is on their backs, the input and output flanges having respectively inlet and outlet openings, the inlet and outlet openings in the outer housing, located respectively near the input and output flanges, characterized in that the inner housing has a hollow fairing consisting of a body and end wall with an overflow hole, which is located on the side of the input flange, the annular gap between the outer and inner housings is located outside of the heat exchange structure, the annulus between the inner casing and the body of the fairing installed internal heat exchange structure, the input and output flanges are installed at the end part of the inner hull, and the bypass hole is replaceable the jet from the orifice.



 

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SUBSTANCE: heat exchanger comprises housing with front and back supporting lags of different height, lens compensator, pipe bundle with branch pipes for supplying and discharging heat-transfer agent, and front water chamber with the baffle which divides the pipe bundle into two sections. One of the sections is provided with branch pipes for supplying and discharging fluid to be heated, and the other section defines the back water chamber. The lens compensator is mounted in the vicinity of the back water chamber, and back supporting lag of the housing is provided with the additional supporting unit and mounted on the housing upstream or downstream of the lens compensator.

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EFFECT: improved heat exchange and enhanced heat power and reliability.

1 dwg

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