RU149538U1 - COMBINED HEAT EXCHANGER-RECYCLER - Google Patents

Abstract

The utility model relates to a power system and is aimed at the beneficial use of heat leaving the internal cooling circuit and exhaust gases of gas reciprocating engines with a coolant. The goal is to reduce the mass, dimensions and hydraulic resistance of the heat exchanger. For this purpose, a combined heat exchanger-heat exchanger is proposed, containing the Field heat exchange elements installed in the housing in groups to form a channel of a common heated coolant, and two separate cavities of heating coolants, characterized in that three tube sheets are installed perpendicular to the axis of the cylindrical body, two of which are fixed to the outside elements of the Field tubes, and in one central one the internal elements of the Field tubes are installed, and the internal elements of the Field tubes are common for both groups they form a channel in which the heated coolant passes successively through the cavities of one and then the other heating coolant. Fig. in figure 1.

Description

The utility model relates to devices for utilization of waste heat of exhaust gases and heat carried away with the coolant of the internal circuit of the cooling system of internal combustion engines.

Known heat exchangers closest to the developed combined heat exchanger-utilizer containing Field tubes, the technical nature and the achieved result are described in sources [1], [2], [3], [4], [5], [6].

The closest in technical essence is the design of the heat exchanger described in the invention "Heat exchanger" SU 1722122, class. F28D 7/12.

Common disadvantages of these devices are as follows:

- unsatisfactory mass and dimensional indicators of installations;

- increased hydraulic resistance;

- the complexity of the design, and therefore the high complexity in the manufacture, which ultimately increases the cost of the heat exchanger.

The objective of the utility model is to improve the mass-dimensional characteristics of the combined heat exchanger-heat exchanger and simplify its design.

The technical result of the utility model consists in the development of a combined heat exchanger-heat exchanger containing Field heat exchanging elements installed in the housing in groups to form a channel of a common heated coolant, and two separate cavities of heating coolants, characterized in that three tube sheets are installed perpendicular to the axis of the cylinder, in two of of which the external elements of the Field tubes are fixed, and in one central the internal elements of the Field tubes are installed, the internal Field's tubes are elements common to both groups and form a channel in which the heated coolant passes successively cavity one and then another heating medium.

The design of the recovery boiler is shown in figure 1.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 shows a longitudinal section of a combined heat exchanger-utilizer. The heat exchanger includes a housing 1, an inlet pipe of a coolant of an internal combustion engine 2, an outlet pipe of a coolant of an internal combustion engine 3, an inlet pipe of a network water 4, an outlet pipe of a network water 5, an outlet pipe of exhaust gases 6, an inlet pipe of exhaust gases 7, external tubes of the elements of the Filter 8, the inner tubes of the elements of the Filter 9, the tube sheets 10, the central tube plate 11, the heating cavities 12 and 13 of the two groups of elements of the Filter.

IMPLEMENTATION OF A USEFUL MODEL

The heat exchanger consists of two groups of Filter heat exchanging elements installed in a common housing 1. The Heat exchange elements of the Filter in each group are made of outer pipes 8 and coaxially installed inner pipes 9. The pipes 8 of the Filter element of one group are fixed at one end in the tube plate 10, and the opposite ends of the pipes 8 are muffled. The pipes 9 are fixed in the middle part in the tube plate 11 and the ends of the pipes 9 are free. The central tube plate 11 is located at a certain distance with respect to the tube plates 10 with the formation of the inlet and outlet chambers of the network water “B”.

The groups of Field elements are mirrored in relation to each other, at a certain distance, forming cavities 12 and 13 for heating the network water.

The combined heat exchanger-utilizer operates as follows.

The heating medium "A" (coolant of the internal combustion engine) enters the heat exchanger through the pipe 2, passes through the annular space of the first group of heat exchange elements of the Filter, transferring heat to the heated medium "B" (network water) through the walls of the pipes 8 and leaves through the pipe 3. The heated medium "B" enters the heat exchanger through the pipe 4, enters the heating cavity 12 between the pipes 8 and 9, receives heat through the walls of the pipes from the heating medium "A" and exits through the pipes 9 into the heating cavity 13 of the second group of heat exchange elements Filda where it is heated by tube wall 8 externally lapped by a heating medium "OG" (exhaust gases). The heated medium "B" enters the chamber for draining network water, from where it exits through the pipe 5. The heating medium "OG" enters the boiler through the pipe 7, passes through the annulus of the second group of heat exchange elements of the Filter, giving off heat to the heated medium "B" through the pipe walls 8 and leaves the boiler through the pipe 6.

BIBLIOGRAPHIC LIST

1. Patent of the Russian Federation SU 1722122 "Heat exchanger".

2. Patent of the Russian Federation RU 2116579 "Hot water boiler".

3. Patent of the Russian Federation RU 97100098 "Hot-water boiler".

4. Patent of the Russian Federation RU 2135888 "Steam generator".

5. Patent of the Russian Federation RU 2307981 "Steam-generating device."

6. Patent of the Russian Federation RU 2162584 "Air heater for the recovery of flue gas heat."

Claims (1)

Combined heat exchanger-heat exchanger containing Field heat exchanging elements installed in the housing in groups to form a channel of a common heated coolant and two separate cavities of heating coolants, characterized in that three tube sheets are installed perpendicular to the axis of the cylindrical body, two of which have external tube elements Field, and in one, central, internal elements of the Field tubes are installed, and the internal elements of the Field tubes are common to both groups and They form a channel in which the heated coolant passes successively through the cavities of one and then the other of the heating coolant.

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