JPS5960189A - Regeneration type heat exchanger - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary regenerative heat exchanger for gaseous media, comprising: a rotor having a number of fan-shaped chambers for conducting regenerative heat exchange material; The primary gaseous medium to be heated and the secondary gaseous medium to be cooled at pressures different from those of the primary medium are heated in opposite directions. an end plate having an inlet opening and an outlet separated by an adjustable fan plate for flow and providing two flow paths through the heat exchanger between the inlet opening and the outlet opening; a stationary structure; and a device for reducing at least the leakage of a low pressure gaseous medium by trapping it in the high pressure gaseous medium within the fan-shaped chamber.

Means for eliminating induced leakage through rotor fans are conventionally known in connection with air preheaters. The means comprises arranged piping including a fan and arranged to move air by suction from a suitable location in the air preheater to a fan-shaped chamber, in which the gas is For example, a small chamber may be used in U.S. Pat.
The guided gas is guided in order to displace it with air before entering the flow path for air as shown in that patent.

This type of means for eliminating induced leakage is very space consuming and cannot be combined in an easy way with existing regenerative heat exchangers.

The aim of the invention is to provide a more favorable solution to the aforementioned problem, making it possible to improve existing heat exchangers of this type in a simple manner.

This object can be achieved by the means of the present invention described below. That is, the present invention provides an adjustable sector plate located between the inlet opening of the low-pressure medium and the outlet opening of the high-pressure medium, which is designed to prevent intentional direct leakage of the high-pressure medium from the end and the said adjustment. Adjust the axial clearance with respect to the corresponding end of the rotor to be maintained between the sector plates to force the low pressure medium from each chamber 1' to leave the low pressure medium flow path. It is characterized by a device that covers the low-pressure medium so as to replace it with a high-pressure medium.

A preferred embodiment of the invention provides an outlet frontage for low pressure media flow.
, and the fan-like chambers have a low-pressure medium detection device positioned proximate to the portion of the fan-shaped plate that moves toward the high-pressure medium flow, and the gap increases when the presence or absence of said low-pressure medium is indicated, respectively. is characterized by a sector plate adjustment device controlled by the low pressure medium sensing device to increase or decrease the pressure.

Thus, according to the method of Ki R, Akira, undesirable induced leakage is simply eliminated by increasing the gap between the fan plates compared to the minimum possible gap that is usually sought after. An improvement has been achieved in that it is possible to

Furthermore, space-wasting piping or ducts and fans are no longer required, making it considerably easier to integrate the invention with existing heat exchangers.

Next, regarding the present invention, we will take as an example an air preheating rotor shown in the form developed on the paper of the drawing, together with a sector plate d3 and a device for adjusting the sector plate in the axial direction of the rotor. This will be explained in detail with reference to the diagrammatic explanatory diagram shown in the appendix (A).

In the drawing, a rotor 1 is shown, which is connected to a bulkhead 2.
The rotor is subdivided into a number of fan-shaped chambers by
Between the opening and the exit 1" 6 to the right, the gas flow! It is rotatably supported by a stationary structure consisting of a lower J3 between the inlets of the temple and two end plates 4 on the right side of the outlet frontage 8.

The rotor chamber is assumed to move from left to right as indicated by arrow 3.

The openings 6, 7 and 5, 8 of each end plate 4 are separated by a sector plate 9, 10, respectively, which sector plate 9,10 is adjusted to suit the end of the rotor by means of an adjusting device. The gap 13 is adjusted to the gap 13.14.
is made small in order to reduce air leakage (arrow line 15) from the air flow path between the openings 5-6 to the gas flow path between the open lower 8, and the pressure of the air flow is higher than the pressure of the gas stream. On the other hand, the gap 14 is quite large, and the gap 14 is adjusted so as to accommodate intentional leakage (arrow 16).
After passing between the fan-shaped plates 9 and 10, the gas is discharged from the fan-shaped chamber 17 before opening towards the air flow path between the frontages 5-6.
I forced V-dan to go outside. The volume transferred from the gas flow path to the air flow path therefore consists mostly of pure air.

By knowing the data of the heat exchanger, J3 and the prevailing gap, it is easy to calculate the required clearance 14. However, a more accurate method is to insert the low-pressure medium between the outlets of the low-pressure medium [1 and close to the part of the sector plate 10 in which the sector-shaped chambers move towards the flow of the high-pressure medium between the openings 5.6.
For example, a device 20 for detecting the pressure of combustion gases may be provided. The detection device 20 is connected to a control device 21, known per se, of the regulating device 11 for adjusting the gap 14, and another part of the control circuit 22 of the control device 21 is such that the detection device 20 is When the presence of low pressure medium is indicated, the gap 14 is increased, and when the low pressure medium is not indicated, the gap 1 is increased.
It is designed to reduce 4.

The above method provides a clean high-pressure medium, such as air, without contamination with low-pressure medium, such as gas, at the outlet opening 6 of the high-pressure medium.

[Brief explanation of the drawing]

The drawing is a diagrammatic illustration of the rotor's outer circumferential surface, together with the sector plate J3 and the device for adjusting the sector plate, in the form developed on the page of the drawing. 1... Rotor 2... Partition wall 4... End plate 5...
Air inflow 1 opening 6... Air outflow port 11107...
・Gas inflow]] port 8... gas outlet opening] 219.
... Fan-shaped plate 10... Fan-shaped plate 11... Fan-shaped plate adjustment device 13... Gap 14...
Gap 17...Fan-shaped chamber 20...Low pressure medium pressure detection location 21...Control device 22...Control circuit agent Shallow
Procedural amendment written by 4 people including Ri Hiroshi (method) March 1, 1939 Mr. Commissioner of the Japan Patent Office, ■, Middle subject indication 111'' (Japanese 9240'jr:i1..:Correct j=i
//2)/2;''3, Relationship with the person who makes the correction/Ifl'l
Agent 5, Supplementary Order Item 4'J February 1930 2ν'' 6. Number of inventions increased by amendment 7, Subject of supplementation

Claims (1)

[Claims] 1. A rotary regenerative heat exchanger for gaseous media, comprising:
A casing for the rotor and a primary gaseous medium to be heated and a cooled gaseous medium of a pressure different from that of the primary medium. said heat exchanger between the opening at the inlet and the outlet thereof, having an inlet opening and an outlet opening separated by an adjustable sector plate for mutually opposite flow of each of the secondary gaseous media to be a stationary structure consisting of an end plate defining two flow paths through the vessel; a device for reducing the leakage of at least a low-pressure gaseous medium by wrapping it with a high-pressure gaseous medium in a fan-shaped chamber; In a rotary regenerative heat exchanger for a nozzle-like medium with a high-pressure medium; The amount of intentional direct leakage (16) of the rotor 91b is adjusted to the axial clearance (14) with respect to the corresponding end of the rotor such that it is supported between the adjustable sector plates (9). and a device (11) for forcing out the low-pressure medium from each chamber (17) which is about to leave the low-pressure medium flow path and replacing the low-pressure medium with high-pressure medium. A regenerative heat-light exchanger collected by one temple. 2. having an outlet opening (8) for the flow of low-pressure medium and a low-pressure medium detection device (20) located close to the part of the sector-shaped plate (10) in which said fan-shaped chamber moves towards the flow of high-pressure medium; ,
The sector plate adjustment device (11) adjusts the gap (14) when the presence or absence of the low pressure medium h<respectively indicated.
2. The regenerative heat exchanger according to claim 1, wherein the regenerative heat exchanger is controlled by the low pressure medium detection device (20) so that the pressure increases or decreases.