Circular mixing chamber

FIELD: heat-power engineering; heat exchangers with mixing of heat-transfer agent flows at different temperatures.

SUBSTANCE: circular partition is provided with circular V-shaped box smoothly perforated over perimeter and located above holes of heat-transfer agent inlet branch pipes; vertex of V-shaped box is rigidly connected with circular partition and end faces of box are tightly connected with inner surface of body and outer surface of casing.

EFFECT: reduced hydraulic resistance at simultaneous reduction of usage of metal.

5 cl, 4 dwg

 

The invention relates to a power system and can be used in heat exchangers, which are mixed molasses fluid having different temperatures.

Known annular mixing chamber between the two environments sectional generator /1/containing a case with the pipes enter the sodium coolant, the casing tube bundle forming the mixing cavity.

The disadvantages of this design is the low efficiency of mixing of two fluids having different temperatures and resulting ripple temperature of the outer surface of the walls of the heat exchange tubes of the tube bundle and reduce their reliability, and also leads to reduction of operating parameters (temperature difference between the mixed fluids).

Closest to the proposed invention is an annular mixing chamber of the heat exchanger formed by inner and outer coaxial cylindrical walls with holes and bottom with two annular rows of holes. The camera is mounted between the casing tube bundle and the shell of the heat exchanger is equipped with nozzles of the input fluid. One of the nozzles using a sleeve connected to the internal input chamber and the other with the outer inlet chamber formed additional cylindrical wall, the enclosure and the cover.

Using a flat and qi is andrijeski partitions organized channels for supplying the coolant from the inlet chambers to the corresponding holes of the mixing chamber /2/.

The disadvantages of this design is the large hydraulic resistance of fluids, which increases operating costs. In addition, the construction of the camera is bulky and time-consuming to manufacture, which increases the cost of manufacturing.

The closest prototype is a technical solution /2/.

The aim of the invention is to reduce the hydraulic resistance while reducing the metal and the complexity of the manufacturing process of the heat exchanger.

This goal is achieved by the fact that the annular wall provided with a ring box V-shaped, evenly perforated perimeter, located above the openings of the pipes entrance of fluids, and the top of the V-shaped boxes are rigidly connected to the annular wall, and the ends of the boxes at cost connected with the inner casing and the outer casing surface.

Options performance camera features;

-the perforation holes on opposite walls of a V-shaped boxes to perform opposite each other;

-the perforation holes on opposite walls of a V-shaped boxes to perform offset relative to each other;

-hole punch on the walls of the V-shaped boxes to do with the diameter decreasing the height of the boxes from the bottom up;

-hole perforat and on the walls of the V-shaped boxes to perform with different spacing, a, moreover, the step between the holes is increased in height from bottom to top.

When the analysis of the prior art have not found solutions, which have characteristics similar to the proposed solution, thus it satisfies the criterion of “significant differences”.

The invention is illustrated in the drawing, where

1 shows a heat exchanger with the proposed annular mixing chamber, a longitudinal section;

figure 2 shows a section a-a in figure 1;

figure 3 shows an embodiment of holes in opposite walls of the boxes opposite each other;

4 shows an embodiment of the holes in the box with sentiam relative to each other.

Annular chamber, mixing 1 formed by the casing 2, the casing 3 of the tube bundle 4 and installed in the gap between the housing 2 and the cover 3 ring boxes 5 V-shaped, uniform perforated holes 6. The housing 2 of the camera 1 is equipped with nozzles 7 and 8 of the input fluids, of which the pipe 7 through the sleeve 9 is connected with the inner chamber 10 and the other 8 from the outer chamber 11 formed annular wall 12, the housing 1 and the casing 3. The upper part of the casing 3 perforated holes 13.

When the heat exchanger fluid into two streams having different temperatures, through the nozzles 7 and 8 comes with annular chambers 10 and 11 and through holes 6 ring the CSOs boxes 5 V-shaped enters the mixing chamber 1, where streams are mixed in a collision (figure 3) or overlapping (figure 4) jets. Next aligned to the temperature of the coolant from the chamber 1 flows through the holes 13 of the casing 3 in the tube bundle 4 for heat transfer with moving in the tubes of the secondary heat transfer medium.

Available in box 5 the implementation of the holes 6 with a diameter decreasing in height boxes 5 to ensure an even distribution of flow of the mixed fluids through the opening 6, thereby improving the intensification of heat transfer and hydraulics of the passage.

Offer annular chamber reduces the hydraulic resistance of the passage of fluids, can reduce the size of the camera and its metal content, and also to reduce the complexity of manufacturing without sacrificing the quality of mixing of fluids.

Literature

1. Sectional progenerator. Avts of the USSR №330301, CL F 22 B 1/06, 1970 (similar).

2. Annular mixing chamber. Avts of the USSR №552992, CL F 22 B 1/06, 1974 - the prototype.

1. Annular mixing chamber, comprising a housing with connections input of heat transfer, evenly distributed along the perimeter, and installed in the housing of the heat exchange tube bundle enclosed in a casing located coaxially relative to the housing with the formation of the annular gap communicated with the annular space of the tube bundle and provided with a ring perehara the coy, characterized in that, in order to reduce the hydraulic resistance while reducing the metal and the complexity of the manufacturing process, it is equipped with a ring box V-shaped, evenly perforated perimeter, located above the nozzle entry of fluids, and the top of the V-shaped boxes are rigidly connected to the annular wall, and the ends of the boxes tightly connected with the inner casing and the outer casing surface.

2. Annular mixing chamber according to claim 1, characterized in that the perforation holes on opposite walls of a V-shaped boxes are made opposite to each other.

3. Annular mixing chamber according to claim 1, characterized in that the perforation holes on opposite walls of a V-shaped boxes made with offset relative to each other.

4. Annular mixing chamber according to claim 1, characterized in that the perforation holes on the walls of the V-shaped boxes made with the diameter decreasing the height of the boxes from the bottom up.

5. Annular mixing chamber according to claim 1, characterized in that the perforation holes on the walls of the V-shaped boxes made with different spacing, a, and the step between the holes is increased in height from bottom to top.



 

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FIELD: heat-exchange apparatus; liquid-to-liquid heat exchangers.

SUBSTANCE: collector chamber of shell-and-tube heat exchanger adjoining the tube sheet of tube bank includes partitions dividing it into supply and discharge compartments; they have U-shaped profile with strip located between its runs; it is made from elastic material; one end of strip is secured on tube sheet and second end is bent at 180 deg. on side of supply compartment.

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FIELD: heat-power engineering; heat exchangers with mixing of heat-transfer agent flows at different temperatures.

SUBSTANCE: circular partition is provided with circular V-shaped box smoothly perforated over perimeter and located above holes of heat-transfer agent inlet branch pipes; vertex of V-shaped box is rigidly connected with circular partition and end faces of box are tightly connected with inner surface of body and outer surface of casing.

EFFECT: reduced hydraulic resistance at simultaneous reduction of usage of metal.

5 cl, 4 dwg

FIELD: heat-power engineering; power engineering; chemical and oil industries.

SUBSTANCE: proposed chamber is provided with rods having section in form of rectangle; rods are mounted over entire perimeter of tube bank in parallel with tubes; vertices of adjacent faces directed towards each other form diffuser and contraction passages. Vertices of faces of adjacent rods directed towards each other may be rounded-off.

EFFECT: reduced hydraulic resistance and enhanced reliability.

2 cl, 3 dwg

FIELD: heat power engineering.

SUBSTANCE: the inventions are intended for heating water and-or steam and may be used in heat power engineering. The boiler plant contains a cylindrical boiler having one course of gases and an internal cylindrical shielded furnace chamber, an air heater, controlled circuits of heating of a heat carrier and fuels, one and more rows of heat exchange pipes, a ring-shaped cylindrical sectional header and a contact economizer. The finned heat exchange pipes are made U-shaped or coiled and form in the end part of the furnace chamber a radiation-convective beam. At that the gas-tightness of the furnace chamber may be ensured either by heat exchange diaphragms connecting the heat exchange pipes or by a heat exchange cylindrical surface. The heat exchange diaphragms, as well as the heat exchange cylindrical surface, which is sealing the furnace chamber and the convective part of the boiler, are spread to the frontal collector. On the collector there are outlet branch-pipes for withdrawal of the heat carrier, from which it is simultaneously possible to take the heat-carrier of several parameters. The boiler plant is countercurrent in respect to a temperature pressure of the furnace chamber and has one and more supporting devices. The back butt of the furnace chamber serves a part of a heating surface of the air-heater together with a branch-pipe of the outlet of the combustion products. The boiler and its heat-exchange pipes are made with in an series heating of the heat-carrier at the speed of its movement in the heat-exchange pipes of 2.15 m\s. The ring-shaped finned boiler header has sections, which are formed by partitions both blank and perforated, one and more frontal covers, one and more pipe plates, on which the heat-exchange pipes of the boiler are fixed. A part of the partitions is made flat and a part of the partitions is made as a ring or a part of a ring. The external finned frontal side of a collector is a part of the heating surface of the air heater. Inventions ensure increased efficiency of the boiler gross load and expansion of its functionalities.

EFFECT: the inventions ensure increased efficiency of the boiler gross load and expansion of its functionalities.

20 cl, 27 dwg

FIELD: heat exchange apparatus; chemical industry and power engineering.

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EFFECT: possibility of performing control of flows in wide temperature range.

4 cl, 9 dwg

FIELD: power engineering, in particular, engineering of collectors for devices for utilization of gases exhausted by apparatuses primarily used for heating air by combustion products, coming from compressor of gas-turbine plant of gas flow apparatus at compressor stations of main gas pipelines.

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5 cl, 4 dwg

FIELD: power engineering, in particular, heat exchange devices, primarily, air-based gas cooling apparatuses.

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3 dwg, 7 cl

FIELD: power engineering, particularly gas cooling plant components.

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4 cl, 4 dwg

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EFFECT: enhanced strength, lowered metal consumption of construction due to optimal parameters of tube wall.

10 cl, 3 dwg

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