JPS60251391A - Sealing mechanism for rotary regenerating type heat exchanging machine - Google Patents

Abstract

PURPOSE:To obtain the sealing mechanism for the rotary regenerating type heat exchanging machine capable of minimizing the leakage of liquid by permitting a seal mounting plate to expand linearly into the radial direction thereof. CONSTITUTION:The mounting plate 2 of integral structure is mounted between the radial partitioning wall 1 and the partitioning plate 7 of a heat accumulating body, rotated about the center of a rotary column 8, allover the whole length of the radial partitioning wall 1 from the side of the rotary column 8 to the side of the periphery thereof while the seal 4 of integral structure is attached to the partitioning plate 7. When the machine is operated, the partitioning wall 1 is expanded and is deformed thermally into a bow-like configuration, however, the mounting plate 2 can be expanded linearly by heat into the radial direction thereof from a starting point at the pin joint section of the side of rotary column 8 since both ends thereof are connected to the radial partitioning wall 1 through pins 12 while the intermediate section is connected to the same wall 1 through a loose fitting connecting device 13. The partitioning plate 7 is moved in parallel to the tip end of the inclined seal 4 keeping the linear condition as it is in accordance with the inclination of the mounting plate 2 and is regulated by a regulating rod 6 so that the gap between the tip end of the seal 4 and the partitioning plate 7 is maintained as the uniform minimum gap.

Description

Detailed Description of the Invention (Technical Field) The present invention provides a partition plate installed in the middle part of a casing that guides high-temperature fluid and low-temperature fluid to prevent mixing of both fluids, and The gap between the heat storage body and the heat storage body, which rotates relative to each other, expands due to the thermal expansion of the rotary regenerative heat exchanger, and fluid leakage between both high and low temperature fluids is prevented from increasing. This invention relates to improvement of the /-role mechanism.

(Prior Art) FIG. 1 is a side view showing the state of the conventional sealing mechanism of the radial partition wall before thermal expansion of the vertical axis type regenerative rotary heat exchanger. Each,
A split-type mounting plate 2 is attached with bolts and nuts B, and a split-type seal 4 is attached to the mounting plate 2 with bolts and nuts (not shown). It faces a partition plate 7 attached to the casing 5 via an adjustment rod 6 and rotates relative to the partition plate 7. This is a side view showing the state of thermal deformation of the radial partition wall mechanism after thermal expansion of the regenerative rotary heat exchanger, with the high temperature fluid flowing downward from the top of the drawing and the low temperature fluid flowing upward from the bottom. When circulating and exchanging heat, the upper end of the radial partition wall 1 becomes high temperature and the lower end becomes low temperature. Therefore, the radial partition wall 1 moves upward from the support bearing 9 on the rotor column 8 side. Thermal expansion increases by 1, and on the peripheral side of the radial partition wall 1, the radial partition wall 1 hangs downward and is thermally deformed into an arched shape as a whole, and as the radial partition wall 1 thermally deforms, the The number plate 2 and the seal 4 are also thermally deformed into a similar arcuate shape as a whole. As the seal 4 thermally deforms, the gap between the seal 4 and the partition wall 7 increases, so the adjustment rod 6 is adjusted automatically or manually to move the partition wall 7 along the tip of the seal 4. , attempts to prevent the gap from increasing, but even in the final adjustment, the upper gap 10 and the lower gap 11 still increase.
It is impossible to prevent the formation of excessive gaps in the air, and it is impossible to prevent fluid leakage between the high and low temperature fluids from increasing through these gaps.

Figure 5 is a side view showing the state of another conventional sealing mechanism of the radial partition wall before thermal expansion of the vertical axis type regenerative rotary heat exchanger. A mounting plate 2 is attached, and a seal 4 is attached to the mounting plate 2.
In one part of the radial direction, an excessive gap Is, 10.11 is provided in advance with a small gap from the partition plate 7, and in other parts, taking into consideration the deformation of the radial partition wall 1 after thermal expansion. Granted and installed.

FIG. 4 is a side view showing the state of thermal deformation of the radial partition wall mechanism after thermal expansion of the vertical axis rotary regenerative heat exchanger to which the seal 4 is attached as shown in FIG. The partition wall 1 thermally expands and is thermally deformed in an arcuate manner as described in FIG. 2, and according to the thermal deformation of the radial partition wall 1,
The mounting plate 2 and seal 4 attached to this are also thermally deformed, but the tip of the seal 4 becomes straight due to the excessive gap 10.11 provided in advance before thermal expansion. By adjusting the movement of the partition plate 7 using the adjustment rod 6, it is possible to align the entire length of the tip of the seal 4 in the radial direction with a small gap, thereby preventing fluid leakage from increasing. There is.

In the conventional sealing mechanism explained in FIGS. 1 and 2, when the thermal expansion of the rotary regenerative heat exchanger is small, fluid leakage is small, but as the thermal expansion increases, the leakage increases.
In the other conventional sealing mechanisms explained in Fig. 4 and Fig. 4, if the thermal expansion of the rotary regenerative heat exchanger is small, there is a lot of fluid leakage, but only by filling the excess gap provided in advance. After thermal expansion of , it decreases.

As explained above, in the conventional seal mechanism, the gap between the seal 4 and the partition plate 7 must be excessive either before or after the thermal expansion of the rotary regenerative heat exchanger. There is a need for a sealing mechanism for a rotary regenerative heat exchanger that can always maintain the minimum gap between the two before and after thermal expansion.

(Object of the present invention) This invention was made in response to the above-mentioned request, and its purpose is to provide a partition plate attached to a casing that separates and guides both high and low temperature fluids of a rotary regenerative heat exchanger. The purpose of the present invention is to provide a sealing mechanism that always minimizes the gap between the heat storage body and the relatively rotating heat storage body, that is, the fluid leakage area, both before and after the thermal expansion of the rotary regenerative heat exchanger, and that has a simple structure.

(Configuration of Examples) Examples of the present invention will be described below with reference to the drawings.

FIG. 5 is a side view showing the state of the radial partition 1 mechanism before the thermal expansion of the heat storage body rotating with the rotor column 8 as Cr. Between the radial partition wall 1 and the partition plate 7, a mounting plate 2 constructed of a continuous integral structure is installed over the entire length of the radial partition v1 from the rotor column 8 side to the peripheral side. , an integral structure type seal 4 is attached to the partition plate 7 side of the mounting plate 2. In this case, the structure of the node 4 may be a split type. On the rotor column 8 side of the mounting plate 2, the mounting plate 2 is joined to the radial partition wall 1 by a pin 12, and at the radial intermediate part of the mounting plate 2, the mounting plate 2 and the radial partition wall 1 are in close contact with each other. In order to achieve both flexibility and flexibility, the mounting plate 2 is joined to the radial partition wall 1 by a floating type joining device 13, and on the peripheral side of the mounting plate 2, the mounting plate 2 is swamped in the radial direction and thermal expansion is prevented. Radial rectangular holes 1 in the mounting plate 2 as permissible.
4 are provided, and the mounting plate 2 is joined to the radial partition wall 1 by pins 12.

FIG. 6 is a diagram showing the A-A arrow view in FIG.
A spacer 15 is sandwiched between the seals 4, and the bolts 16 and nuts 17 are adjusted to have a slight gap with the partition plate 7, and the mounting plate 2 is attached to the radial partition wall 1. Bolt 18, straw 7.1. - Floating type joining device 13 composed of 19, spring 20, and nut 21
By using the floating gap 22 of the mounting plate 2, it is mounted in a floating manner.

FIG. 7 is a side view showing the state of the sealing mechanism of the radial partition wall 1 after the heat storage body rotating around the rotor column 8 has thermally expanded. The radial partition wall 1 thermally expands and the second
The scattering plate 2 is thermally deformed into an arched shape as a whole as explained in the figure, but the scattering plate 2 is joined to the radial partition wall 1 by pins 12 at both ends and by a floating joining device 13 at the middle part. Therefore, thermal expansion can occur linearly in the radial direction from the pin joint on the rotor column 8 side as a starting point toward the pin joint on the peripheral side.
The tip of the lever 4 can also maintain the same linear shape as before thermal expansion. Depending on the inclination of the mounting plate 2, the gap between the tip of the seal 4 and the partition plate 7 in the straight line state is parallel to the tip of the inclined seal 4, and the gap between the tip of the seal 4 and the partition plate 7 is uniformly maintained over the entire length in the radial direction. The partition plate 7 is connected to the adjustment rod 6 so as to maintain the gap.
Automatically or manually adjusted.

Although the sealing mechanism of the above embodiment describes the configuration of the sole mechanism in the radial partition wall of a vertical axis rotary regenerative heat exchanger, the sealing mechanism of the present invention is not limited to this. For example, it can be configured as a horizontal axis rotary regenerative heat exchanger, and various changes can be made to the mounting plate, the pin for joining the mounting plate, and the floating joining device without departing from the spirit of the present invention. It is clear that what can be done.

(Effects of the present invention) In the conventional seal mechanism of a rotary regenerative heat exchanger, the radial shape of the tip of the /-le changes due to thermal expansion of the radial partition wall, but the seal of the partition plate Since the radial surface facing the partition plate cannot change its shape, it is impossible to match the radial shape of the tip of the seal and the opposing surface of the partition plate before and after thermal expansion. Even if the holder is adjusted and moved, it is not possible to prevent an excessive gap from being formed between the tip of the lever and the facing surface of the partition plate.

In the sealing mechanism of the present invention, at least one end of the mounting plate is attached to the radial partition wall by means of a pin joint having a rectangular hole that can accommodate the radial thermal expansion of the mounting plate. Therefore, the mounting plate has a radial shape before thermal expansion independent of the thermal expansion deformation of the radial partition wall, preferably similar to the radial surface opposite the seal of the partition plate, which generally consists of a straight line. can maintain a constant linear shape. Therefore, after thermal expansion of the radial partition wall, by appropriately adjusting the proximity movement of the partition plate toward the tip of the seal attached to the thin plate, the gap between the tip of the seal and the partition plate can be adjusted to accommodate thermal expansion. It is possible to always maintain a uniform and minimum gap over the entire length in the radial direction from front to back.

The floating type joint device that connects the mounting plate to the radial partition wall at the intermediate part of the pin joints at both ends of the mounting plate maintains the tight contact between the mounting plate and the radial partition wall, and It has the effect of allowing vertical displacement due to thermal expansion of the radial partition wall with the 4° partition wall.

FIG. 8 is a graph showing the relationship between the heat load applied to the rotary regenerative heat exchanger and the amount of fluid leakage between both high and low temperature fluids in the conventional seal mechanism and the seal mechanism of the present invention.
2 is a fluid leakage curve of the conventional seal mechanism explained in FIG. 6 and FIG. is a fluid leakage curve of the seal mechanism of the present invention explained in FIGS. 5, 6, and 7. The sealing mechanism of the present invention shows that the amount of fluid leakage is lower than that of the conventional 7-channel mechanism, and the fluid leakage rate remains constant throughout the period of change in thermal load.

As a result of the above-mentioned effects, it is possible to provide a rotary regenerative heat exchanger mechanism with a simple structure that maintains fluid leakage to a minimum throughout the entire period of changes in heat load.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the state of the conventional sealing mechanism of the radial partition wall before thermal expansion, and FIG. 2 is a side view showing the state of thermal deformation of the sealing mechanism shown in FIG. 1 after thermal expansion.
FIG. 6 is a side view showing the state of another conventional sealing mechanism of the radial partition wall before thermal expansion, and FIG. 4 is a side view showing the state of thermal deformation of the sealing mechanism shown in FIG. 6 after thermal expansion. , FIG. 5 is a side view showing the state of the sealing mechanism of the present invention of the radial partition wall before thermal expansion, and FIG. 6 is A of FIG. 5.
7 is a side view showing the state of thermal deformation of the seal mechanism shown in FIG. 5 after thermal expansion, and FIG. 8 is a view showing the thermal deformation state of the seal mechanism shown in FIG. It is a graph showing the relationship between load and fluid leakage amount. Incidentally, the symbols of the main parts in the figure are as follows. 1... Radial partition wall 2... Mounting plate slot... Bolts and nuts 4... Seal 5... Casing 6... ... Adjustment rod 7 ... Partition plate 8 ... Rotor column 9 ...
...Support bearing 10.11...Excess gap 12...
... Bin 13 ... Floating type joining device 14 ...
... Rectangular hole 15 ... Spacer 16 ...
...Bolt 17...Natsuto 18...
Bolt 19...Washer 20...Spring 21...Nut 22...Idling gap I, n, I[l...Fluid leakage curve Patent applicant Gadelius Co., Ltd. No. 6

Claims (1)

[Claims] 1) A casing that separates and guides high-temperature fluid and low-temperature fluid, and a heat storage body containing a heat absorbing and heat dissipating material in a compartment partitioned by a plurality of radial partition walls, In a sealing mechanism installed on the relative motion surface of a rotary regenerative heat exchanger that moves cyclically, the shape of the tip of the radial seal does not deform following the thermal expansion of the rotary regenerative heat exchanger and always retains heat. 7 of a rotary regenerative heat exchanger characterized in that both ends of the seal are supported to maintain the shape before expansion.
A single mechanism. 2) The sealing mechanism for a rotary regenerative heat exchanger according to claim 1, wherein the shape of the tip of the radial direction is a straight line. 6) The mounting plate that holds the 7-rules in the radial direction has a continuous integral structure, and both ends of the mounting plate are joined to the radial partition plate by pins, and at least one end of the bin is connected to the radial direction of the mounting plate. A sealing mechanism for a rotary regenerative heat exchanger according to any one of claims 1 to 2, which is a mechanism that allows thermal expansion. 4) The patent claim is characterized in that an intermediate part between the pin joints of the mounting plate that holds the radial /-ru is equipped with a floating type joining device that freely joins the mounting plate to the radial partition wall. A sealing mechanism for a rotary regenerative heat exchanger according to scope 6.