RU2569118C1 - Plate-type film heat exchanger - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: creation of channels for work fluid and heat medium distribution through contact tubes in top part of the vessel, and channels for above said liquid flow in bottom part of the vessel ensures exclusion from the vessel of the branch pipes for work fluid and heat medium supply in top part of the vessel and branch pipes for said liquids removal located in bottom part of the vessel, and exclusion of the removal unions connecting the branch pipes.

EFFECT: use of said plate-type film heat exchanger reduces capital expenditure due to reduction of its metal content and simple design, and hence reduces prime cost of the produced product.

5 dwg

Description

The invention relates to heat-exchange type apparatuses intended for carrying out condensation, heating, boiling, heat and mass transfer processes, and may find application in the chemical, petrochemical, food and other industries.

Known plate heat exchanger [1], containing a package of heat exchanger plates having inlet and outlet openings forming channels through a package for heat exchange fluid installed between two end plates, and at least one of the said end plate is provided, at least , one through hole in which the connecting pipe is located, communicating with the piping system transmitting the medium.

The apparatus presented has relatively low values of the heat transfer coefficient, due to the fact that the intensity of heat transfer in a single-phase flow is significantly lower than in a film of liquid flowing down the inner surface of pipes or plates.

The closest in technical essence is a film heat and mass transfer apparatus [2], consisting of a housing with a chamber for liquid output with fittings, contact pipes made of corrugated sheets with oblique corrugation of a round profile with a radius equal to the radius of contact pipes equipped with profiled collars placed with the outer the sides of the concave inclined corrugations for the entire length of the sheets, with gas pipes and helical spirals, and a pipe is inserted into the gaps formed by the gas pipes and contact pipes and for supplying a working fluid and a coolant, in communication with fittings for supplying a working fluid and a coolant, in the lower ends of the contact tubes are sealed pipes for draining the coolant connected to the outlet fitting.

However, this device has a relatively high metal consumption and is difficult to constructive.

The invention solves the problem of reducing metal consumption and simplifying the design.

The technical result consists in reducing the metal consumption and simplifying the design by creating channels for distributing the working fluid and the coolant along the contact pipes in the upper part of the apparatus and channels for draining the above fluids in the lower part of the apparatus, which made it possible to exclude nozzles for supplying the working fluid and coolant from the apparatus in the upper part of the apparatus and nozzles for the removal of these liquids, located in the lower part of the apparatus, and also to exclude the discharge nipples connecting the nozzles.

The specified technical result is achieved by the fact that in a plate film heat exchanger consisting of end plates with through holes located in the chambers for the input and output of the working fluid and coolant, on which the fittings for the input and output of coolants, as well as contact pipes made of corrugated sheets with oblique corrugation of a round profile with a radius equal to the radius of the contact tubes equipped with profiled collars placed on the outside of the concave oblique corrugations, gas and pipes and screw spirals, according to the invention, the upper and lower ends of the corrugated sheets are bent at the places of their closest convergence, while the ends of the profiled flanges are made shorter by the length of the bent ends of the corrugated sheet and the bent ends form channels for distributing the working fluid and coolant along the contact pipes and channels for their draining, and the cavity of the through holes on the end plates, designed to enter and output the working fluid, are in communication with the channels for distribution and draining liquid, and the cavities of the through holes intended for the input and output of the coolant are in communication with the channels for distribution and draining of the coolant.

The presence of bent ends of the corrugated sheets in the places of their closest convergence in opposite directions and thereby the formation of channels for distributing the working fluid and the coolant along the contact pipes in the upper part of the heat exchanger and channels for draining the working fluid and coolant in the lower part of the heat exchanger, as well as holes on the end plates designed for input and output of the working fluid with channels for distribution and draining of the working fluid, and the communication cavity through The holes intended for flowing and draining the coolant, with channels for distributing and draining the coolant, as well as the length of the profiled flanges shorter than the length of the bent ends of the corrugated sheet, allows heat exchange between the coolant and the working fluid through the surface of the contact pipes without the use of nozzles for supplying working fluid and coolant in the upper part of the device and pipes for the removal of coolant located in the lower part of the device, and also exclude the discharge nipples connecting these nozzles, which simplifies the design of the film plate heat exchanger and reduces its metal consumption.

The implementation of the profiled flanges shorter by the length of the bent ends of the corrugated sheet provides unhindered flow of the working fluid and coolant through the channels for distribution and runoff.

The communication of the through-hole cavities on the end plates intended for the working fluid with the channels for distributing and draining the working fluid, as well as the communication of the through-hole cavities intended for the coolant with the channels for distributing and draining the coolant, ensures the operability of the heat exchanger and reduces its metal consumption and simplifies the design.

In FIG. 1 shows a general view of a plate film heat exchanger; in FIG. 2 shows a top view of a plate film heat exchanger with the upper end plate removed; in FIG. 3 shows a longitudinal section through a heat exchanger along section AA; in FIG. 4 shows a longitudinal section of a heat exchanger along section BB; in FIG. 5 shows a distribution diagram of a working fluid and a coolant.

The plate-type film heat exchanger consists of end plates 1 and 2, in which through holes 3 and 4 are made, communicating with the chambers for introducing the working fluid 5 and heat carrier 6 and, respectively, communicating with the chambers for discharging the working fluid 7 and coolant 8, on which are installed nipple for input 9, 10 and output 11, 12. The contact pipes 13 are made of corrugated sheets 14 with inclined corrugation of a round profile 15 with a radius equal to the radius of the contact pipes. The contact tubes 13 are equipped with profiled shoulders 16 located on the outside of the concave inclined corrugations 17, gas pipes 18 and screw spirals 19. The upper 20 and lower 21 ends of the corrugated sheets 14 are bent at the points of their closest convergence with the formation of channels 22 for distributing the working fluid and channels 23 for distributing the coolant along the contact pipes 13 in the upper part of the heat exchanger and channels 24 and 25 for draining the working fluid and coolant from the contact pipes 13, respectively, in the lower part of the heat ennika.

Lamellar film heat exchanger operates as follows.

The working fluid through the nozzle 9 enters the chamber 5, then, passing through the holes 4 made in the plate 1, it enters the channels 22 formed by the bent ends of the corrugated sheets 14 in the upper part of the heat exchanger, and flows into the contact pipes 13 through the annular gaps formed by gas pipes 18 and the inner surface of the contact pipes 13. Similarly, the coolant through the fitting 10 enters the chamber 6, then, passing through the holes 3 made in the end plate 1, enters the channels for distribution of the coolant 23 and flows into contact pipes 13. Then the liquids (working and coolant) flow through the corresponding pipes in the form of a liquid film along the turns of the spiral spiral 19, acquiring rotational translational motion, which presses them to the surface of the contact pipes 13 and provides a steady flow, intensive mixing and heat transfer through the contact wall pipes 13. At the outlet of the contact pipes 13, the working fluid through the channels 24 and the coolant through the channels 25 located in the lower part of the heat exchanger flow through the through holes 3 and 4, made in tsevoy plate 2, in the chamber 7, and 8, respectively, and therefrom discharged through the nozzle 11 and 12.

The use of the inventive plate film heat exchanger can reduce capital costs due to a decrease in its metal consumption and simplify the design, and therefore, reduce the cost of the product.

Information sources

1. RF patent No. 2469252, F28D 9/00, F28F 3/08 from 09/30/2009, publ. December 12, 2012, BI No. 34.

2. RF patent No. 2332246, B01D 1/22, B01D 3/28 of 05/21/2007, publ. 08/27/2008, BI No. 24.

Claims (1)

Lamellar film heat exchanger, consisting of end plates with through holes located in the chambers for the input and output of the working fluid and coolant, on which the fittings for the input and output of coolants, as well as contact pipes made of corrugated sheets with inclined corrugation of a round profile with a radius, are installed, equal to the radius of the contact pipes equipped with profiled collars placed on the outside of the concave inclined corrugations, gas pipes and spiral spirals, characterized in that the upper and lower ends of the corrugated sheets are bent in the places of their closest convergence, while the ends of the profiled flanges are made shorter by the length of the bent ends of the corrugated sheet and the bent ends form channels for distributing the working fluid and coolant along the contact pipes and channels for their draining, holes on the end plates, designed for input and output of the working fluid, in communication with channels for distribution and draining of the working fluid, and the cavity through holes, designed values for the input and output of the coolant, communicated with channels for distribution and draining of the coolant.

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