KR920007057B1 - Magnetic recording medium seal device for heat exchanger - Google Patents

Abstract

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Description

Floating seal mechanism of rotary regenerative heat exchanger

1 is a cross-sectional view showing a radial partition wall portion of a conventional rotary regenerative heat exchanger.

2 shows the arrow A-A in FIG. 1;

3 is a side view of a radial partition wall equipped with a seal mechanism by a block seal method according to the present invention.

4 is a diagram showing the arrow E-E of FIG.

5 is a plan view of a rotational regenerative heat exchanger equipped with a block seal and a sliding ring according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Elastic thin plate seal 2: Low temperature side bearing

3: radial partition wall 4: spring

5: casing 6: fan-shaped plate

7: slide surface 8: spring plate

9: adjusting knot 10: adjusting knot

11: bolt 12: flow plate

13: nat 14: bolt

15: insert plate 16: the rotating magnet

17: block seal 18: holder

19: adjusting bolt 20: antirust member

21: slide 22: heat storage

B, F, G: direction of rotation C: fan plate entrance

D: fan-shaped exit

The present invention is a sealing mechanism for preventing the leakage of fluid is installed on the surface of the fan-shaped plate and the heat storage body of the rotary regenerative heat exchanger, the gap between the seal against the heat deformation of the heat exchanger due to thermal bridge load The present invention relates to a seal mechanism that improves wear resistance and fluidity of an elastic thin plate seal which always maintains a minimum.

1 is a cross-sectional view of a radial partition wall portion of a conventional longitudinal rotary regenerative heat exchanger.

When the heat exchanger receives the heat load after initially setting the radially elastic fluid thin plate seal 1 installed in the radial direction, the radial partition wall 3 of the rotating heat storage body supported by the low temperature side bearing 2 Due to the temperature gradient generated in the rotating heat storage body, the outer periphery is deformed as shown in the right side of the drawing.

Since the elastic thin plate seal 1 is fluidly attached to the radial partition wall 3 by a spring 4, the elastic thin plate seal 1 attached to the upper part is deformed even when the radial partition wall 3 is stretched and deformed. The elastic thin plate seal attached to the lower portion by the pressing force of the spring 4 and the contact of the fan-shaped plate 6 attached to the casing 5 for guiding the fluid by the weight of the seal mechanism opposite to the spring 4. Pressurized by the copper surface and automatically adhered to the entire length in the radial direction of the elastic thin plate seal 1, so that a gap does not occur between the elastic thin plate seal 1 and the fan-shaped plate 6, so that fluid rarely leaks. none.

However, the force for pressing the elastic thin plate seal 1 to the fan plate 6 acts on the tip of the elastic thin plate seal 1 having a small slide contact cross section, so that the elastic thin plate seal 1 rotates with the fan plate 6. As it slides, the tip of the seal tends to wear relatively early. In addition, since the elastic thin plate seal 1 moves up and down before and after the slide with the fan-shaped plate 6, the wear of the elastic thin plate seal 1 is promoted, and the rotational resistance of the rotating heat storage body rapidly increases and decreases. The disadvantage is that. In addition, the flow plate 12 with the elastic thin plate seal 1 is attached to the radial partition wall 3 in the vertical direction in response to the heat deformation of the radial partition wall 3 or the vertical movement of the elastic thin plate seal 1. While the slide flows, the slide gap between the flow plate 12 and the radial partition wall 3 is a very small gap to prevent leakage of the fluid. Therefore, the rust generated on the slide surface and the wastes contained in the fluid, etc. Accumulate and adhere to each other, and the slide of both often occurs.

For this reason, there has been a demand for the emergence of a floating seal mechanism of an improved rotary regenerative heat exchanger that is resistant to abrasion, has no abrupt up-and-down movement and does not impede the fluidity of the flow plate.

Accordingly, the present invention satisfies the above requirements, the object of which is to provide a block seal made of a wear-resistant material to a portion of the radial flow seal made of an elastic thin plate to lose the good sealing function and light weight of the conventional flow seal mechanism. It is possible to improve the abrasion resistance of the elastic thin plate seal, to prevent the rapid vertical movement of the elastic thin plate seal by applying the sliding of the block seal, and to provide the sealing mechanism by installing the antirust member on the slide surface of the flow plate and the radial partition wall. An object of the present invention is to provide a floating seal mechanism of a rotary regenerative heat exchanger that improves the fluidity of the present invention.

Next, an embodiment of the present invention will be described with reference to the drawings of a longitudinal-type rotary regenerative heat exchanger.

3 is a side view of the radial partition wall 3 of the heat storage body which rotates about the rotor column 16, and is an elastic thin plate provided between the radial partition wall 3 and the fan-shaped plate 6. A portion of the seal (1) is cut off and a block seal (17) made of abrasion-resistant materials such as cast iron, carbon, or the like is used in place of the elastic thin plate seal (1) of the cut portion, and the elastic sheet seal (1) and the block The flow plate 12 with the seal 17 is provided with two kinds of springs 4. That is, the flow plate 12 on the upper side of the radial partition wall 3 is provided with a spring 4 for pressing the elastic thin plate seal 1 and the block seal 17 onto the fan-shaped plate 6. The flow plate 12 at the lower part of 3) is provided with a spring 4 for reducing the weight of the sealing mechanism for pressing the elastic thin plate 1 and the block seal 17 to the fan-shaped plate 6.

4 is a view showing the arrow EE of FIG. 3, in which the flow plate 12 is inserted with the radial partition wall 3 with a small gap so as to slide freely with the radial partition wall 3; And a holder 18 supporting the block seal 17 on the fan-shaped plate 6 side of the flow plate 12, and a holder 18 supporting the block seal 17 on the holder 18. The holder 18 is provided with an adjusting bolt 19 for adjusting the contact state between the block seal 17 and the fan-shaped plate 6 so that the fluid plate 12 and the radial partition wall 3 come into contact with each other. The anti-rust member 20, for example, a thin plate of ceramic or stainless steel is attached to each slide surface for the full length in the radial direction. The arrow F here indicates the direction of rotation of the radial partition wall 3.

5 is a plan view of a rotary regenerative heat exchanger equipped with a block seal 17 and a slide ring 21, and an inner circumferential side of the radial partition wall 3 assembled in a rotating heat storage body 22; The block seal 17 provided on the outer circumferential side rotates in the direction of the arrow G, and when the slide contact with the fan plate 6 is finished, the block seal 17 is flush with the slide surface 7 of the fan plate 6. And slide contact with the inner circumferential side and outer circumferential side guide ring 21 disposed on the fluid flow path side, and then slide contact with the other fan-shaped plate 6, and again with the slide ring 21 disposed on the fluid flow path side in another direction. In slide contact, the slide contact with the original fan plate 6 enters, and this operation is repeated thereafter. If necessary, in addition to the inner circumferential side and outer circumferential side slide rings 21, other slide rings concentric with these slide rings 21 and block seals for sliding contact corresponding thereto may be added.

Although the floating seal mechanism of the above embodiment has been described with respect to the configuration of the seal mechanism in the radial partition wall of the longitudinal-type rotary regenerative heat exchanger, the seal mechanism of the present invention is not limited to this, for example, rotating heat storage. It is possible to apply to the inner and outer circumferential direction of the sieve, the axial direction of the outer circumferential portion, the transverse rotational regenerative heat exchanger, and the like, and various modifications can be made without departing from the spirit of the present invention with respect to the block seal and the sliding. It is clear that this can be done.

By providing a block seal to a part of the radial length of the elastic thin plate seal, most of the force that the elastic thin plate seal presses on the fan corrugate in the conventional sealing mechanism is caused by the appropriate bending deformation of the elastic thin plate seal itself. It works by concentrating on the block seal, not on. Therefore, since only a part of the pressing force is applied to the elastic thin plate seal, the wear of the elastic thin plate seal due to the contact with the fan plate and the slide is very small. Meanwhile, most of the pressing force acts on the block seal, but the block seal is made of a wear-resistant material. Therefore, premature wear does not occur due to the slide contact.

Block seals are generally heavier than resilient thin seals in unit seal length, but since they are used only for a portion of the seal length, the seal mechanism hardly increases in weight and the spring walls do not need to be particularly reinforced than conventional seal seals. It is possible to make use of the lightness of the weight which is a characteristic of the conventional elastic thin plate sealing mechanism. By installing a slide ring connected to the fan plate and having the same plane as the slide contact surface of the fan plate on the side of the fluid flow path, it prevents the rapid protruding and pressurization of the seal mechanism from the fan plate entrance and exit which occurred in the conventional fluid seal mechanism. It is possible to reduce the wear of the elastic thin plate seal and to make the rotation of the heat storage body slip. Anti-corrosive members attached to the sliding surface of the flow plate and the radial partition wall do not cause rust on their slide surfaces, and do not attach waste materials in the fluid so much, and because they are thin plates, both anti-rust members over the radial electric field The contact between the slide contact surfaces is improved, and even if the slide gap is small, the flow plate and the radial partition wall and the flow can be maintained smoothly.

According to the above effects, the seal has a good sealing against fluid leakage, light weight, good fluidity and abrasion resistance, and a fluid seal mechanism of a rotary regenerative heat exchanger in which the heat storage body can perform a smooth rotational movement. There is a number.

Claims (1)

A plane in which a heat sink including heat absorbing and heat dissipating material is relatively moved in a fan compartment which is attached to a casing portion for inducing fluid and separates a hot fluid from a low temperature fluid and is partitioned by a plurality of radial partition walls. In the floating seal mechanism provided to prevent the leakage of fluid in the relative movement surface of the rotary regenerative heat exchanger having a wear resistance, the wear-resistant block seal and the wear-resistant block seal in which most of the force applied to the flat plate by the elastic thin plate seal are applied. A sliding seal mechanism for rotating heat exchanger type heat exchanger, comprising: a sliding ring for guiding a slide of a thin plate;

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