JPH0223990Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a heat pipe heat exchanger, which is used as a heat exchanger that transfers heat from a high-temperature gas side to a low-temperature gas through a finned pipe. It is.

BACKGROUND TECHNOLOGY A conventional heat pipe heat exchanger, for example,
It consists of the configuration shown in the figure. In Figure 3, 21 is the high temperature gas side, 22 is the low temperature gas side, 2
3 is a partition wall that partitions these, 24 is a through hole provided in the partition wall 23, 25 is a heat pipe extending between the high temperature gas side 21 and the low temperature gas side 22 and passing through the through hole 24; 26 and 27 are welded parts where the heat pipe 25 is welded to the partition wall 23, 28 is an arrow indicating the flow of high temperature gas, and 29 is an arrow indicating the flow of low temperature gas. That is, the heat pipe 25 passed through the through hole 24 of the partition wall 23
is welded and fixed to the partition wall 23 for gas sealing of the through hole 24.

Problems to be Solved by the Invention As mentioned above, in the conventional heat pipe heat exchanger, the heat pipe 25 is welded and fixed to the partition wall 23, so it is extremely difficult to remove the heat pipe 25, and the amount of heat transferred is Even if it becomes necessary to adjust the ratio of the gas passage cross-sectional area on the high-temperature gas side 21 and the gas passage cross-sectional area on the low-temperature gas side 22 in order to change the The problem is that it cannot be done. In particular, when the heat pipe has fins, there is a problem in that special measures are required to seal the through holes in the partition wall.

The present invention attempts to solve these problems. In other words, the present invention is capable of reliably sealing the through hole in the partition wall through which the finned heat pipe passes, and can easily unfasten the heat pipe from the partition wall when the heat pipe is damaged. In addition to being easy to remove,
It is an object of the present invention to provide a heat pipe heat exchanger whose partition walls can be moved and adjusted when it is necessary to change the amount of heat transfer.

Measures to solve the problem Without welding the heat pipe to the partition wall,
A gas-sealing gas seal and a tightening screw for pressing the gas seal were provided between the inside of the through-hole of the partition wall and the heat pipe. In other words, the configuration of the present invention is such that a partition wall that partitions a high-temperature gas side and a low-temperature gas side and has a heat pipe passed through the through-hole has a female threaded portion provided in a part of the inside of the through-hole; a gasket provided on the housing for sealing the high-temperature gas side and the low-temperature gas side; and a tightening screw for fixing the heat pipe by passing the heat pipe through the gasket and screwing the gasket into the female thread to press the gasket. The heat pipe has a large number of fins on the outer periphery of the heat pipe except for the part corresponding to the through hole of the partition wall and the vicinity thereof, and the gasket is arranged on the high temperature gas side and on the low temperature gas side. Each fin has a positioning collar having an outer diameter slightly smaller than the outer diameter of the fin, and the minimum inner diameter of the through hole is slightly larger than the outer diameter of the fin, and the hot gas Equipped with a half-split type presser metal fitting in the shape of a bush, which is provided closer to the high temperature gas side than the gasket closer to the side,
Furthermore, the inner diameter of the through hole on the low temperature gas side is larger, a part of the inner diameter is provided with the female thread part, and the tightening screw screwed into the female thread part is of a half-split type. It is characterized by

Function It has a packing inside the through hole of the partition wall, and
Since this gasket has a tightening screw that holds it down, gas sealing between the high temperature gas side and the low temperature gas side is performed by the gasket, and by loosening the tightening screw, the heat pipe can be fixed to the partition wall. Since it is undone, the heat pipe can be easily removed in the event of breakage, and the amount of heat transfer can be adjusted by moving the partition wall to either gas side. In particular, although the heat pipe has fins, there should be no fins in the area corresponding to the through-hole of the partition wall or in the vicinity thereof, and the bush-type holding fitting closer to the high-temperature gas side should be of a half-split type to prevent the aforementioned tightening. Since the screws are of a half-split type, the aforementioned heat pipes can be easily removed and the partition walls can be moved.

Embodiment FIGS. 1 and 2 show an embodiment of the present invention.

In FIG. 1, 1 is a high-temperature gas side, 2 is a low-temperature gas side, 3 is a partition wall separating these two, 4 is a through hole provided in the partition wall 3, and 5 is a high-temperature gas side 1 and a low-temperature gas side. A heat pipe extending over the side 2 and passing through the through hole 4; 6 is a female screw portion provided in a part of the through hole 4 with a larger inner diameter on the low temperature gas side 2; 7 is the through hole 4; A gasket 8 is provided near the end of the internally threaded part 6 in the part where the internal diameter of the hole 4 is increased to provide a gas seal between the high temperature gas side 1 and the low temperature gas side 2; 6 is a half-split type tightening screw that fixes the heat pipe 5 to the bulkhead 3 by pressing the gasket 7 from the low temperature gas side 2 to the high temperature gas side 1; arrows showing flow,
10 is an arrow indicating the flow of low temperature gas. Also 1
1 is a fin provided on the outer periphery of the heat pipe 5, and 12 is a pressed positioning collar to be described later. That is, although a large number of fins 11 are provided on the outer periphery of the heat pipe 5, there are no fins 11 in the portion corresponding to the through hole 4 of the partition wall 3 and in the vicinity thereof. Further, the heat pipe 5 is provided with a collar 13 having an outer diameter slightly smaller than the outer diameter of the fin 11, and gaskets 7 are provided on both sides of the collar 13, respectively. In order to allow the heat pipe 5 to pass through easily, the minimum inner diameter of the through hole 4 is made slightly larger than the outer diameter of the fins 11 of the heat pipe 5. For this reason, a bush-shaped half-split presser metal fitting 12 is provided closer to the high temperature gas side 1, and has two functions: one to block the inner diameter by an amount corresponding to the increase in the minimum inner diameter, and the other to support the gasket 7 closer to the high temperature gas side 1. I'm letting you do that.

The heat pipe heat exchanger configured as shown in FIG. Therefore, gas sealing of the through hole 4 between the high temperature gas side 1 and the low temperature gas side 2 is reliably performed. Also, by loosening the tightening screw 8 and removing it from the female threaded portion 6, the partition wall 3
Since the fixation of the heat pipe 5 to is released,
By moving the heat pipe 5 and removing the presser metal fitting 12, the heat pipe 5 can be easily removed in the event of damage to the heat pipe 5. Also, by moving the partition wall 3 to either gas side, the amount of heat transfer can be reduced. can also be adjusted. That is, when the tightening screw 8 is removed from the female threaded portion 6 and the partition wall 3 is moved to the left in FIG. On the other hand, when moved to the right, the heat transfer area on the high temperature gas side 1 increases and the heat transfer area on the low temperature gas side 2 decreases. Therefore, after adjusting the position of the partition wall 3 to obtain a predetermined heat balance, the tightening screw 8 is screwed into the female threaded portion 6 again to press the gaskets 7, 7, and the heat pipe 5 is attached to the partition wall 3. It should be fixed to .

However, if the amount of movement of the partition wall 3 for adjusting the position of the partition wall 3 is relatively small, there is no need to take this into consideration since both the gaskets 7, 7 have a certain degree of elasticity, and it is fine to leave it as is. If the amount of movement is more than that, it is necessary to add a liner of an appropriate thickness due to the presence of the collar 13, or it is necessary to replace the packings 7, 7 with new thickness dimensions.

Effects of the invention The present invention does not require welding and fixing the heat pipe to the partition wall, but instead provides a gas seal between the inside of the through hole of the partition wall and the heat pipe, and a tightening screw that presses the gas seal. A gas seal between the high-temperature gas side and the low-temperature gas side is performed by the gasket, and the heat pipe is fixed to the partition wall by loosening the tightening screw and removing it from the female thread provided in the through hole. Therefore, in the event of a heat pipe breakage, the heat pipe can be removed, and the partition wall can be moved to either gas side to increase the cross-sectional area of the gas passage on the high temperature gas side and the low temperature gas side. can be changed,
That is, the amount of heat transfer can be easily adjusted.

Moreover, in the present invention, the heat pipe has a positioning collar that positions the gasket closer to the high temperature gas side and closer to the low temperature gas side, and the temperature is higher than that of the gasket closer to the high temperature gas side. Since the heat pipe has a bush-shaped presser metal fitting located closer to the gas side, the above-mentioned sealing can be performed more reliably. No fins are provided in the through hole or its vicinity.
The minimum inner diameter of the through hole is slightly larger than the outer diameter of the fin, and both the tightening screw and the holding fitting are half-shaped, so that the heat pipe is not equipped with fins. Even if the heat pipe is damaged, it can be easily removed.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway sectional side view showing an embodiment of the present invention, Fig. 2 is a sectional front view taken along the cutting line A-A in Fig. 1, and Fig. 3 is a conventional heat pipe heat exchanger. FIG. 3 is a partially cutaway side view showing an example of the present invention. 1...High temperature gas side, 2...Low temperature gas side, 3...
Partition wall, 4... Through hole, 5... Heat pipe, 6...
...Female thread part, 7...Puttle, 8...Tightening screw, 11...Fin, 12...Press fitting, 13...
…spit.

Claims (1)

[Scope of utility model registration request] A partition wall that partitions a high-temperature gas side and a low-temperature gas side and has a heat pipe passed through the through-hole, has a female threaded portion provided in a part of the inside of the through-hole, and a female threaded portion provided inside the through-hole on the high-temperature gas side. and a gasket that seals the low-temperature gas side, and a tightening screw that passes through the heat pipe and is screwed into the female threaded portion to press the gasket and fix the heat pipe, and The outer periphery of the heat pipe has a large number of fins except for the part corresponding to the through hole of the partition wall and the vicinity thereof. has a positioning flange with an outer diameter slightly smaller than the outer diameter of the fin, and the minimum inner diameter of the through hole is slightly larger than the outer diameter of the fin, and the temperature is higher than that of the gasket closer to the high temperature gas side. A half-split type presser metal fitting is provided in the shape of a bush provided closer to the gas side, and further, the inner diameter of the through hole is larger on the low temperature gas side, and the female screw portion is provided in a part of the through hole. 2. A heat pipe heat exchanger, characterized in that the tightening screw screwed into the tightening screw is of a half-split type.