JP2007024401A - Sealed container type heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce labor and time required for maintenance work of a heat exchange tube. <P>SOLUTION: The sealed container type heat exchanger 1 is provided with a first container part 2 formed by partitioning off an inflow chamber 23 and an outflow chamber 24 for a communicating fluid, and a second container part 3 formed with a heat exchange chamber 31 filled with a circulating heat exchange fluid. The heat exchange tube 40 communicating the inflow chamber 23 with the outflow chamber 24 is arranged in the heat exchange chamber 31. One or both of the inflow chamber 23 and the outflow chamber 24 faces the first container part 2, an opening 25 capable of opening and closing is provided, one or both ends 40e of the heat exchange tube 40 is extendedly arranged in the first container 2 to face the opening 25. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sealed container type heat exchanger that performs heat exchange between a circulating fluid and a heat exchange fluid in a sealed container.

  A heat exchanger for correcting the temperature of the fluid flowing through the piping path is arranged in the piping path in the governor station arranged in various plants and gas conduits. In particular, in the above-mentioned governor station, a heater for heating the high-pressure gas supplied to the governor is provided as a heat exchanger for the gas piping path led out from the high-pressure conduit and introduced into the medium-low pressure conduit. ing.

  There are various types of heat exchangers in such a piping facility (for example, see Patent Documents 1 and 2 below). Conventionally, a heat exchanger called a hot water bath type in which piping is provided in an open container in which hot water is stored has been generally adopted. In recent years, however, a sealed container type (shell) has many advantages such as improved heat conversion efficiency. & Tube type) heat exchangers are now being used in this type of facility.

  This sealed container type heat exchanger has a structure in which a heat exchange part communicating with a circulation fluid pipe such as a gas pipe is provided in a sealed container filled with a circulating heat exchange fluid. When this sealed container type heat exchanger is used as a heater for heating the gas in the pipe, a circulation path for circulating hot water as a heat exchange fluid is formed in the sealed container, and the inside of the warm water filled in the sealed container A heat exchanging section (heat exchanging tube) made up of a large number of tubes is provided, and a gas pipe is communicated with the entrance / exit of this tube.

  FIG. 1 is a partial sectional view showing a structural example of a conventional sealed container heat exchanger (FIG. 1A is a front view and FIG. 1B is a side view). The hermetic container type heat exchanger J1 includes a lower container part J2, an upper container part J3, and a partition member J4. The open flange part J20 of the lower container part J2 and the open flange part J30 of the upper container part J3 face each other. Both are joined via the partition member J4.

While the lower container portion J2, where the inlet portion J21 of the outflow end of the conduit G _IN is connected, and the outlet portion J22 inflow end of the conduit G _OUT is connected is provided, which is partitioned in the lower container portion J2 The inflow portion J21 communicates with the inflow chamber J23, and the outflow portion J22 communicates with the other partitioned outflow chamber J24. Further, the upper container portion J3 is formed with a heat exchange chamber J31 filled with a circulated heat exchange fluid, and circulation ports J32 and J33 through which the heat exchange fluid flows into or out of the heat exchange chamber J31 are formed. Is provided.

  The end portion of the heat exchange tube J40 passes through the partition member J4, and the inflow chamber J23 and the outflow chamber J24 are communicated with each other through the heat exchange tube J40. The heat exchange tube J40 itself is in the heat exchange chamber J31. And is exposed to the circulation of the heat exchange fluid.

Japanese Patent Laid-Open No. 8-200216 JP-A-9-26104

  In such a conventional sealed container heat exchanger, a small-diameter and thin heat-exchange tube is used in order to ensure an effective surface area and heat transfer for heat exchange, and many of them are arranged in the heat-exchange chamber. The structure to be adopted is adopted. In such a heat exchange tube, when a fluid such as gas leaks from there, bubbles will be mixed in the circulating heat exchange fluid, resulting in problems such as a decrease in heat exchange efficiency. Therefore, it is desirable to perform maintenance such as inspection as necessary, and when the above-described leakage is confirmed, it is necessary to replace the heat exchange tube.

  On the other hand, in the structure of the conventional sealed container type heat exchanger shown in FIG. 1, in order to perform maintenance such as inspection on the heat exchange tube, the upper flange part and the lower container part are joined at the open flange part. Must be disassembled. This disassembly requires not only shutting off the circulating fluid from the conduit and stopping the circulation of the heat exchange fluid, but also requires extensive work to discharge the heat exchange fluid in the heat exchange chamber once, which requires a lot of labor for maintenance work. There was a problem that it took time.

  In general, a rust inhibitor is mixed in the heat exchange fluid to prevent corrosion of the heat exchange tubes that occur during operation, but the upper and lower container sections are opened for maintenance work. When the exchange tube is exposed to the atmosphere, there arises a problem that the coating covered with the rust preventive agent is destroyed during the period and corrosion proceeds.

  The present invention has been proposed to cope with such a situation, and is to improve the structure of a sealed container heat exchanger for improving the maintainability of the heat exchange tube, and to maintain the heat exchange tube. It is an object of the present invention to reduce labor and time required for work, and to perform maintenance (inspection) work of the heat exchange tube without exposing the heat exchange tube to the atmosphere.

In order to achieve such an object, the features of the present invention are as follows.
One is provided with a first container part formed by partitioning an inflow chamber and an outflow chamber of a circulation fluid, and a second container part formed with a heat exchange chamber filled with a circulating heat exchange fluid, In a sealed container heat exchanger in which a heat exchange tube communicating the inflow chamber and the outflow chamber is disposed in the heat exchange chamber, the first container portion is provided in one or both of the inflow chamber and the outflow chamber. An opening that can be opened, closed, and closed is provided, and one or both ends of the heat exchange tube are extended and arranged in the first container so as to face the opening.

  In addition, in the sealed container heat exchanger described above, a communication hole communicating with the inflow chamber or the outflow chamber is formed in a portion of the heat exchange tube that extends into the first container portion. It is characterized by being.

  Also, in one aspect, in the sealed container heat exchanger described above, the first container part and the second container part are joined via a partition member, and the heat exchange tube includes the partition member. It penetrates and the edge part is extended to the said 1st container side, It is characterized by the above-mentioned.

  According to the sealed container heat exchanger having such a feature, by opening the opening provided on the first container side, the end of the heat exchange tube can be attached without disassembling the first container and the second container. The heat exchange tube can be easily inspected from the opened end. Thereby, the labor and time required for the maintenance work of the heat exchange tube can be reduced as much as possible. In the inspection, an in-hole observation means such as an endoscope or a tube thickness measurement or tube wall flaw detection means such as an ultrasonic probe can be employed.

  In addition, since maintenance work such as inspection can be performed without affecting the second container side at this time, this maintenance work can be performed without stopping the circulation of the heat exchange fluid in the second container. It can be performed. According to this, since the heat exchange tube is not exposed to the atmosphere, it is possible to prevent the corrosion of the heat exchange tube that occurs during the maintenance period.

  And since the communication hole which connects with the inflow chamber or the outflow chamber is formed in the part extended in the 1st container part in a heat exchange tube, the distribution | circulation from an inflow chamber to an outflow chamber via a heat exchange tube The flow of the fluid is not hindered, and the heat exchange of the circulating fluid can be performed with high efficiency as in the conventional case.

  Moreover, since the 1st container part and the 2nd container part are joined via the partition member, and the heat exchange tube has penetrated the partition member and the edge part is extended to the 1st container side, By securing the airtightness in the penetrating part of the partition member, the first container part and the second container part can be hermetically separated with a simple structure, and the heat exchange tube is maintained without affecting the second container part. It becomes possible.

  As described above, according to the characteristics of the present invention, it is possible to improve the structure of a sealed container type heat exchanger for improving the maintainability of the heat exchange tube. And the labor and time which a maintenance operation | work of a heat exchange tube requires can be reduced. Further, the heat exchange tube can be maintained (inspected) without exposing the heat exchange tube to the atmosphere, and corrosion of the heat exchange tube can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 2 is a partial cross-sectional view illustrating a sealed container heat exchanger according to an embodiment of the present invention. The sealed container heat exchanger 1 includes a first container part 2, a second container part 3, and a partition member 4, and an open flange part 20 of the first container part 2 and an open flange part of the second container part 3. The point which has faced 30 and joined both via the partition member 4 has the same basic composition as the past. As shown in the figure, when the first container part 2 and the second container part 3 are arranged vertically, the first container part 2 is on the bottom and the second container part 3 is on the top. Become.

Then, as in the prior art, the first container portion 2, and the inflow portion 21 outflow end of the conduit G _IN is connected, and the outlet portion 22 of the inlet end of the conduit G _OUT is connected is provided, the The inflow portion 21 communicates with one inflow chamber 23 partitioned within one container portion 2, and the outflow portion 22 communicates with the other partitioned outflow chamber 24.

  The second container part 3 is formed with a heat exchange chamber 31 filled with a circulated heat exchange fluid, and circulation ports 32 and 33 through which the heat exchange fluid flows in or out of the heat exchange chamber 31. Is provided.

  A heat exchange tube 40 passes through the partition member 4, and the inflow chamber 23 and the outflow chamber 24 are communicated with each other through the heat exchange tube 40, and the main circulation portion of the heat exchange tube 40 itself is a heat exchange chamber. It is arrange | positioned in 31 and the edge part vicinity is extended and arrange | positioned in the 1st container part 2. As shown in FIG.

  In this embodiment, the heat exchange tube 40 is formed of a U-shaped small-diameter tube. In the heat exchange chamber 31, the heat exchange tubes 40 are bundled with the partition plates 41A, 41B, and 41C so that a plurality of heat exchange tubes 40 are bundled. It is supported. Further, in the vicinity of the end portion, the vicinity of one end portion extends into the inflow chamber 23, and the vicinity of the other end portion extends into the outflow chamber 24. The inflow chamber 23 and the outflow chamber 24 are respectively provided. A communication hole 40p is formed in communication with the.

  In this embodiment, an opening 25 that can be opened and closed by the lid member 25 </ b> A is formed at the bottom of the first container portion 2. The opening 25 is opened so as to face both the partitioned inflow chamber 23 and outflow chamber 24, and both end portions 40 e of the heat exchange tube 40 are extended and disposed so as to face the opening 25. Has been.

The sealed container type heat exchanger 1 having such a structure heats the circulating fluid from the conduit _GIN to the conduit _GOUT, and the circulating fluid that has flowed into the inflow chamber 23 from the inflow portion 21 communicates. The heat exchange tube 40 enters the heat exchange tube 40 through the hole 40p, flows out from the communication hole 40p in the outflow chamber 24 via the heat exchange tube 40, and is disposed in the heat exchange chamber 31 while reaching the outflow portion 22. By passing through the heat exchange tube 40, heat exchange with the heat exchange fluid is performed and heating is performed.

Then, when performing maintenance work of the heat exchange tubes 40, after blocking the inlet valve of the conduit G _IN (not shown), to open the opening 25 by removing the lid member 25A. As a result, both end portions 40 e of the heat exchange tube 40 are opened through the opening 25. At this time, the first container part 2, the partition member 4, and the second container part 3 remain joined, and the heat exchange chamber 31 in the second container part 3 is kept sealed.

  That is, both ends of the heat exchange tube 40 are exposed to the atmosphere while the heat exchange fluid circulated in the heat exchange chamber 31 in the second container part 3 is filled. 40e can be opened.

  Regarding the maintenance of the heat exchange tube 40, non-destructive inspection is performed by inserting a hole thickness measuring means such as an endoscope or an ultrasonic probe or a tube wall flaw detecting means from the opened end 40e. It can be performed.

  In the embodiment described here, the opening 25 faces both the inflow chamber 23 and the outflow chamber 24, and the end 40 e of the heat exchange tube 40 is shown as an example in which both ends thereof face the opening 25. Not limited to this, the opening 25 is formed so as to face one of the inflow chamber 23 or the outflow chamber 24, and the end portion 40 e of the heat exchange tube 40 is extended and disposed so that one end thereof faces the opening 25. It may be a thing.

  FIG. 3 is a partial cross-sectional view for explaining a sealed container heat exchanger according to another embodiment of the present invention (FIG. 3A is a front view, and FIG. 3B is a side view). Here, the same parts as those of the above-described embodiment are denoted by the same reference numerals, and a part of the overlapping description is omitted.

  In this embodiment, in a sealed container type heat exchanger 1a composed of a first container part 2 and a second container part 3 formed in a vertical shape, an opening 25 is opened and closed on the side surface of the first container part 2. A lid member 25A is provided. Here, the lower end side of the portion extending to the first container portion 2 side of the heat exchange tube 40 is bent horizontally with respect to the portion extending vertically from the partition member 4, and the end portion 40 e is set to the side surface. It faces the opening 25.

  Also in this embodiment, the opening 25 faces both the inflow chamber 23 and the outflow chamber 24, and the end 40e of the heat exchange tube 40 shows an example in which both ends thereof face the opening 25, but this is not limitative. Instead, the opening 25 is formed so as to face one of the inflow chamber 23 or the outflow chamber 24, and the end 40 e of the heat exchange tube 40 is extended and arranged so that one end thereof faces the opening 25. It may be.

  Also in this embodiment, the end 40e of the heat exchange tube 40 is opened through the opening 25, and the heat exchange fluid circulated in the heat exchange chamber 31 in the second container part 3 is filled. In this state, the end 40e of the heat exchange tube 40 can be opened without exposing the main part of the heat exchange tube 40 to the atmosphere.

  FIG. 4 is a partial cross-sectional view for explaining a sealed container heat exchanger according to another embodiment of the present invention (FIG. 4 (a) is a front view, and FIG. 4 (b) is a side view). Here, the same parts as those of the above-described embodiment are denoted by the same reference numerals, and a part of the overlapping description is omitted.

  This embodiment is similar to the embodiment shown in FIG. 3 in that the side surface of the first container part 2 is a sealed container type heat exchanger 1a composed of a first container part 2 and a second container part 3 formed in a vertical shape. Are provided with an opening 25 and a lid member 25A for opening and closing the opening 25.

  Also in this embodiment, the end 40e of the heat exchange tube 40 is opened through the opening 25, and the heat exchange fluid circulated in the heat exchange chamber 31 in the second container part 3 is filled. In this state, the end 40e of the heat exchange tube 40 can be opened without exposing the main part of the heat exchange tube 40 to the atmosphere.

  Further, in this embodiment, the adjustment rod 5 is raised from the partition member 4 and the partition plates 41A, 41B, 41C are supported on the adjustment rod 5. According to this, the position of the partition plates 41 </ b> A, 41 </ b> B, 41 </ b> C can be changed by adjusting the upper end of the adjustment bar 5 protruding from the upper part of the second container part 3 with the adjustment means 50.

  As described above, according to the embodiment of the present invention, it is possible to improve the structure of the hermetic container type heat exchanger for improving the maintainability of the heat exchange tube 40. And the labor and time which a maintenance operation | work of the heat exchange tube 40 requires can be reduced. Further, maintenance (inspection) of the heat exchange tube 40 can be performed without exposing the heat exchange tube 40 to the atmosphere, and corrosion of the heat exchange tube 40 can be prevented.

  In addition, the 1st container part 2 and the 2nd container part 3 in embodiment of this invention may consist of another member joined, and the integrated container may be divided into each part. Further, the partition member 4 may also be configured as a part of the first container part 2 or the second container part 3 even if another member is joined.

It is explanatory drawing of a prior art. It is a fragmentary sectional view explaining the sealed container type heat exchanger concerning an embodiment of the present invention. It is a fragmentary sectional view explaining the sealed container type heat exchanger concerning other embodiments of the present invention (the figure (a) is a front view and the figure (b) is a side view). It is a fragmentary sectional view explaining the sealed container type heat exchanger concerning other embodiments of the present invention (the figure (a) is a front view and the figure (b) is a side view).

Explanation of symbols

1, 1a, 1b Sealed container type heat exchanger 2 First container portion 20, 30 Open flange portion 21 Inflow portion 22 Outflow portion 23 Inflow chamber 24 Outflow chamber 25 Open port 25A Lid member 3 Second container portion 31 Heat exchange chamber 32 , 33 Circulation port 4 Partition member 40 Heat exchange tube 41A, 41B, 41C Partition plate 5 Adjustment rod 50 Adjustment means

Claims (3)

A first container part formed by partitioning an inflow chamber and an outflow chamber of the circulation fluid, and a second container part formed with a heat exchange chamber filled with a circulating heat exchange fluid, the inflow chamber and the In a sealed container type heat exchanger in which a heat exchange tube communicating with an outflow chamber is disposed in the heat exchange chamber,
In the first container portion, facing one or both of the inflow chamber and the outflow chamber, an opening that can be opened and closed is provided,
A sealed container type heat exchanger, wherein one or both ends of the heat exchange tube are arranged to extend into the first container part so as to face the opening.   2. The sealed container mold according to claim 1, wherein a communication hole communicating with the inflow chamber or the outflow chamber is formed in a portion of the heat exchange tube extending into the first container portion. Heat exchanger.   The first container part and the second container part are joined via a partition member, and the heat exchange tube penetrates the partition member and an end thereof extends to the first container side. The hermetic container type heat exchanger according to claim 1 or 2.

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