JP2017156025A - Heat exchange system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchange system capable of enhancing performance of a shell and tube type heat exchanger, and improving convenience.SOLUTION: A heat exchange system 100a includes: a heat exchanger 100 comprising a shell 106, and many resin tubes 114 stored in the shell, and configured to perform heat exchange between fluid flowing inside the tubes and fluid flowing outside the tubes; a communication pipe 140 communicating between the inside and the outside of the tubes in the heat exchanger; and a gasket 144 arranged in a movable manner in the communication pipe. The heat exchange system is configured to reduce differential pressure between the inside and outside of the tubes.SELECTED DRAWING: Figure 5

Description

  The present invention includes a shell and a plurality of resin-made tubes accommodated in the shell, and includes a heat exchanger that performs heat exchange between a fluid flowing in the tube and a fluid flowing outside the tube. About the system.

  In recent years, research and development related to exhaust heat recovery have been actively conducted for the purpose of reducing fuel costs and countermeasures against global warming in plants and the like. Waste heat recovery is a technology that reuses heat that was originally discarded without being used up. For example, in a plant having a boiler, heat is lost as exhaust heat through various places such as waste water, exhaust gas, and waste steam. Since the recovery and reuse of these heats leads to an improvement in boiler fuel utilization efficiency, exhaust heat recovery is attracting attention. In addition, for the purpose of improving plant efficiency, there is a case where switching to a water-cooled type using seawater or river water of a plant that was previously air-cooled type is required. Various heat exchangers are used as main devices for recovering waste heat from the waste water and cooling seawater.

  A shell and tube type heat exchanger is known as a kind of general heat exchanger. The shell and tube type heat exchanger is a type of heat exchanger in which a large number of tubes are accommodated in a shell (exterior). When using a shell and tube heat exchanger for cooling water circulation, seawater cooling, or other waste heat recovery in an open cooling tower, fluid such as cooling water, seawater or drainage is passed through the tube, and inside the shell It is common to exchange heat by flowing a heat medium such as water or chlorofluorocarbon. This is because even if the heat exchanger is fouled by dirty cooling water, seawater, drainage or exhaust gas, it can be easily removed mechanically by inserting a brush or the like if the fouled part is in a straight tube. It is.

  Many solids are contained in the thermal fluid (drainage / exhaust gas) discharged from the plant or the like, or seawater or river water. The fluid containing these solid substances may be unusable because the fluid flowing into the tube described above is immediately blocked at the gathering portion before the tube. Therefore, there is a case where a method of flowing waste water or exhaust gas to the shell side having a large space is employed. However, when the fluid is allowed to pass through the shell, the solid matter may adhere to the outer surface of the tube and the heat exchange performance of the tube may deteriorate. Moreover, there exists a possibility that a solid substance may accumulate and block | close between adjacent tubes. Once solids adhere to the tube or become clogged, the tube is pulled out of the shell for cleaning. However, the heat exchanger is heavy and requires precision when pulling out the tube. Therefore, large-scale maintenance is required. Such maintenance is costly in terms of both time and cost. Also, in some places, it is not possible to secure a heat exchanger carry-out route.

  Therefore, for example, the heat exchanger described in Patent Document 1 includes means for efficiently removing dirt on the surface of the pipe (tube). The heat exchanger of Patent Document 1 is first provided with a baffle plate having a plurality of through holes inside a jacket (shell). The baffle plate is installed so as to be movable along the tube in a state where the tube is inserted into each through hole. Each through hole is equipped with a brush, and the baffle plate is moved along the tube to clean the surface of the tube soot and hot water with the brush.

  Further, for example, Patent Document 2 discloses a heat exchanger including a resin shell and a large number of tubes, and a resin-made and plate-like baffle plate. According to the heat exchanger of patent document 2, since the main members of the heat exchanger are made of resin, it is possible to obtain higher corrosion resistance than the heat exchanger of patent document 1, and chemical resistance. It is possible to improve the performance. Furthermore, according to the heat exchanger of patent document 2, weight reduction can be achieved by using resin, and since the baffle plate is light, cleaning work by sliding can be easily performed.

JP-A-6-42893 JP 2012-207813 A

  According to the heat exchanger of patent document 2, the corrosion resistance and chemical resistance of the heat exchanger of patent document 1 can be improved, and weight reduction can be achieved. As described above, the performance of the shell and tube heat exchanger is improved by daily improvement, but further improvement of the performance is demanded when the heat exchanger is spread.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a heat exchange system that can further improve the performance of the shell-and-tube heat exchanger and can further improve convenience. .

  In order to solve the above-described problems, a typical configuration of a heat exchange system according to the present invention includes a shell and a plurality of resin-made tubes accommodated in the shell, and the fluid flowing in the tubes and the outside of the tubes A heat exchange system including a heat exchanger for exchanging heat with a fluid flowing through the communication pipe, the communication pipe communicating between the inside and outside of the tube of the heat exchanger, and being movably disposed in the communication pipe And a gasket for reducing the pressure difference between the inside and outside of the tube.

  According to the above configuration, even if one of the pressures inside or outside the tube fluctuates rapidly, the differential pressure inside and outside the tube is alleviated by moving the gasket inside the communication pipe. Thereby, it becomes possible to prevent suitably the damage (especially damage of a tube) of the heat exchanger by the fluctuation | variation of a pressure.

  In order to solve the above-mentioned problem, another configuration of the heat exchange system according to the present invention includes a shell and a plurality of tubes made of resin accommodated in the shell, and the fluid flowing in the tube and the outside of the tube are provided. A heat exchange system including a heat exchanger for exchanging heat with a flowing fluid, comprising a conductivity meter disposed at at least one of an outlet of a fluid flowing in the tube or an outlet of a fluid flowing outside the tube It is characterized by that.

  According to such a configuration, the leakage of the fluid can be detected by monitoring the conductivity of the fluid flowing inside or outside the tube. Therefore, it becomes possible to detect the breakage of the heat exchanger (particularly breakage of the tube) at an early stage.

  In order to solve the above-mentioned problem, another configuration of the heat exchange system according to the present invention includes a shell and a plurality of tubes made of resin accommodated in the shell, and the fluid flowing in the tube and the outside of the tube are provided. A heat exchange system including a heat exchanger for exchanging heat with a flowing fluid, comprising a light transmittance meter for measuring light transmittance inside a shell.

  According to the above configuration, the degree of dirt inside the shell can be grasped by acquiring the light transmittance inside the shell. Thereby, it becomes possible to clean a heat exchanger at an appropriate timing.

  In order to solve the above-mentioned problem, another configuration of the heat exchange system according to the present invention includes a shell and a plurality of tubes made of resin accommodated in the shell, and the fluid flowing in the tube and the outside of the tube are provided. A heat exchange system including a heat exchanger for exchanging heat with a flowing fluid, the heat exchanger having an inlet and an outlet for a fluid flowing in the tube arranged at one end face of the shell, The inlet and the outlet of the fluid flowing through the shell are arranged on the side surface of the shell, and a draining valve is installed on the end surface of the other end of the shell.

  According to such a configuration, when the heat exchanger is installed vertically, the end surface of one end of the shell is on the upper side, and the end surface of the other end of the shell is on the lower side, the heat exchanger is installed on the lower end surface of the shell. By opening the draining valve, the water flowing outside the tube, that is, inside the shell can be easily extracted. Therefore, it becomes possible to install and operate the heat exchanger in a vertical position.

  In order to solve the above-mentioned problem, another configuration of the heat exchange system according to the present invention includes a shell and a plurality of tubes made of resin accommodated in the shell, and the fluid flowing in the tube and the outside of the tube are provided. A heat exchange system including a heat exchanger for exchanging heat with a flowing fluid, wherein a plurality of heat exchangers are simultaneously connected and can be operated by switching.

  According to the said structure, even if the heat exchanger which performs cleaning stops operation | movement among several units | sets, heat exchange can be continued in another heat exchanger. Therefore, since the heat exchanger can be cleaned in parallel with the heat exchange process, it is possible to suppress a decrease in processing efficiency due to the cleaning.

  In order to solve the above-mentioned problem, another configuration of the heat exchange system according to the present invention includes a shell and a plurality of tubes made of resin accommodated in the shell, and the fluid flowing in the tube and the outside of the tube are provided. A heat exchange system including a heat exchanger for exchanging heat with a flowing fluid, comprising a baffle plate through which a number of tubes pass and slidable with respect to a shell, and the outer diameter of the baffle plate is a shell. It is characterized in that the outer edge is substantially equal to the inner diameter of the taper.

  According to such a configuration, the sliding resistance can be reduced while the baffle plate and the inner wall of the shell are in contact with each other. Therefore, by sliding the baffle plate, it is possible to remove dirt attached to the inner surface of the shell while removing dirt attached to the tube. Therefore, it becomes possible to improve the cleanability of the heat exchanger and improve the maintainability.

  In order to solve the above-mentioned problem, another configuration of the heat exchange system according to the present invention includes a shell and a plurality of tubes made of resin accommodated in the shell, and the fluid flowing in the tube and the outside of the tube are provided. A heat exchange system including a heat exchanger for exchanging heat with a flowing fluid, wherein a baffle plate through which a number of tubes pass and which can slide relative to the shell, and a baffle plate at the end of the tube It is provided with the stopper which controls reaching.

  According to the said structure, when a baffle plate is slid, a contact with the baffle plate and the edge part of a tube can be suppressed. As a result, it is possible to prevent damage to the fixing portion at the end of the tube, and to suitably prevent mixing of the fluid flowing inside and outside the tube and the fluid flowing outside the tube.

  ADVANTAGE OF THE INVENTION According to this invention, the performance of a shell & tube type heat exchanger can be improved further, and it becomes possible to provide the heat exchange system which can aim at the further improvement of convenience.

It is a figure which shows roughly the heat exchanger contained in the heat exchange system of this embodiment. It is a figure which shows the internal structure of the heat exchanger of FIG. It is a figure which shows the detail of the internal structure of the heat exchanger of Fig.2 (a). It is a figure which shows the process in which a baffle board is slid. It is the schematic of the heat exchange system concerning 1st Embodiment. It is the schematic of the heat exchange system concerning 2nd Embodiment. It is the schematic of the heat exchange system concerning 3rd Embodiment. It is the schematic of the heat exchange system concerning 4th Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are illustrated. Omitted.

(Heat exchanger)
FIG. 1 is a diagram schematically showing a heat exchanger 100 included in the heat exchange system of the present embodiment. The heat exchanger 100 shown in FIG. 1 is intended for heat exchange with sewage or natural water, such as exhaust heat recovery from plant effluent or cooling using seawater or river water. Below, the case where it utilizes for the exhaust heat recovery from the waste_water | drain of a plant is mentioned as an example, and it demonstrates. Moreover, in the following description, a heat medium is illustrated as a fluid flowing in a tube to be described later, and drainage is illustrated as a fluid flowing outside the tube, that is, inside the shell and outside the tube.

  First, wastewater is sent from the drainage tank 102 to the inside of the shell 106 through the water supply port 104 by a pump (not shown). A large number of tubes 114 (see FIG. 2A), which will be described later, are arranged inside the shell 106, and a heat medium is passed through the tubes. And in the process in which the wastewater passes through the shell, the heat of the wastewater is absorbed and recovered by the heat medium in the tube. Thereafter, the waste water after heat exchange is sent from the drain port 108 to the treatment tank 110.

  The wastewater collected in the drainage tank 102 may contain acid / alkaline waste liquid. The drainage of the drainage tank 102 is collected through drainage pits (side grooves). In particular, in the outdoor drainage pit, insects tend to gather around, and there is a risk that dead bodies, larvae, and the like are mixed in the drainage. In addition, moss, algae, bacteria, etc. are easy to breed in wastewater containing organic components. Therefore, organic sludge 136 (see FIG. 4A) in which bacteria, aquatic microorganisms, moss, algae, and the like are mixed easily adheres to the tube 114 of the heat exchanger 100, and regular maintenance in a short period is necessary. It becomes.

  The inventors confirmed that the adhering matter on the tube 114 is attached in the shape of hair, and when the tube 114 is taken out from the shell 106 and dried, it can be easily removed for each individual lump of hair with a broom. did it. That is, the organic sludge 136 adhering to the tube 114 was not attached thinly to the surface but individually attached as a lump. Therefore, although it does not detach spontaneously in the shell due to the flow of the drainage, it can be easily removed by applying a slight force in the shearing direction (direction in which the surface of the tube slides).

  FIG. 2 is a diagram showing an internal configuration of the heat exchanger 100 of FIG. FIG. 2A is a perspective view showing the entire heat exchanger 100. FIG. 2B is a schematic diagram showing the internal configuration of the heat exchanger 100, and corresponds to the longitudinal section of FIG.

  In FIG. 2A, the shell 106 is shown through. As shown in FIG. 2A, a large number of resin tubes 114 are arranged inside the shell 106. The space around the tube 114 is sealed by the shell 106. The shell 106 is provided with a water supply port 104 and a drain port 108, and drainage passes through the shell from the water supply port 104 toward the drain port 108. Flange 112a * 112b is provided in the edge part of the shell 106, The flanges 112a * 112b are open | released and internal structures, such as the tube 114, can be removed.

  As shown in FIG. 2B, both ends of the tube 114 are connected to a pair of collecting portions 116 and 118, and a heat medium is caused to flow inside the tube 114 by the collecting portions 116 and 118. The gathering portion 116 is divided into a partition 116a and a partition 116b. The compartment 116a is provided with a heat medium inlet 120, and the heat medium flows from the compartment 116a to the tube 114a and the like.

  The inside of the collecting portion 118 connected to the tip of the tube 114a is not divided, and the heat medium flows from the collecting portion 118 to the tube 114b. In the process of flowing through these tubes 114a and 114b, the heat medium absorbs the heat of the waste water in the shell. A heat medium outlet 122 is provided in the previous section 116b of the tube 114b. The heat medium is conveyed to a predetermined facility through the outlet 122, and the heat is reused.

  Reference is again made to FIG. In the present embodiment, even when organic sludge 136 (see FIG. 4A) is taken into the shell together with the drainage, and when biological scale (sediment) is generated on the surface of the tube 114, The organic sludge 136 and the like can be easily removed using the baffle plate 124. The baffle plate 124 is a resin-made and plate-like member, and a plurality of baffle plates 124 are provided at various locations on the tube. The baffle plate 124 can be slid along the tube 114, and thereby the organic sludge 136 attached to the tube 114 can be scraped off.

  FIG. 3 is a diagram showing details of the internal configuration of the heat exchanger 100 of FIG. FIG. 3A shows the internal unit 125 taken out from the heat exchanger 100. The internal unit 125 is configured by combining a large number of tubes 114, a plurality of baffle plates 124, a support shaft 126 that connects the baffle plates 124, and a pair of collecting portions 116 and 118.

  In the conventional metallic heat exchanger, the gathering portion and the like are welded to the shell and cannot be removed. However, in this embodiment, the gathering portion 116 and the like are in the form of a cartridge as the internal unit 125, and can be taken out by opening the flanges 112a and 112b in FIG. With this configuration, the tube 114 and the like can be easily removed and cleaned or replaced. In addition, it is possible to easily perform maintenance, which has conventionally been large in scale, such as a drying operation.

  FIG. 3B is a diagram in which each tube 114 in FIG. 3A is omitted in order to clearly show the baffle plate 124. As shown in FIG. 3B, the baffle plates are connected to each other by a support shaft 126 at the center and a plurality of frames 128 at the edge side.

  Each baffle plate has a plurality of through holes 130. The through hole 130 is formed to have an inner diameter substantially equal to the outer diameter of the tube 114 (see FIG. 3A). As shown in FIG. 3A, the baffle plate 124 is installed by inserting the tube 114 into each of the plurality of through holes 130.

  FIG. 3C is a cross-sectional view of the through hole 130 of FIG. In particular, as shown in FIG. 3C, in this embodiment, although the inner diameter of the through hole 130 is substantially equal to the outer diameter of the tube 114, a gap of only 0.2 mm to 1.0 mm is provided between the tube 114. It is formed to form. This gap is a configuration for allowing the baffle plate 124 to slide even when the tube 114 is expanded by the internal pressure. As described above, the organic sludge 136 is not attached thinly on the surface, but is attached individually as a lump. Therefore, even if there is a gap of 0.2 mm to 1.0 mm, it can be easily removed by applying a slight force in the shear direction.

  Further, as shown in FIG. 3B, the baffle plate 124 is provided with a notch 132 that forms a drainage path at the edge thereof. Each baffle plate is installed such that each notch 132 is positioned on the side opposite to the notch 132 of the other adjacent baffle plate 124. In this embodiment, each baffle plate 124 is installed so that the notch 132 is positioned upside down, but each baffle plate 124 may be installed so that the notch 132 is positioned on the left and right sides. These are configurations for increasing the flow rate of the drainage water in the shell 106. Moreover, since waste water flows so as to be orthogonal to the tube 114 (see FIG. 3A), the heat exchange performance can be improved. Furthermore, since this configuration can eliminate the stagnation point of the flow in the shell, it is possible to suppress clogging of solids and growth of microorganisms.

  FIG. 4 is a diagram illustrating a process of sliding the baffle plate 124. As shown in FIG. 4A, a part of the support shaft 126 penetrates the collecting portion 116 and is exposed to the outside of the shell 106, and a grip portion 134 is provided. Each baffle plate can be easily slid manually by operating the grip portion 134 via the support shaft 126. In addition, a packing for preventing leakage of drainage is provided between the support shaft 126 and the collecting portion 116.

  4B is a view in which the support shaft 126 is pulled out from the state of FIG. 4A, and FIG. 4C is a view in which the support shaft 126 is pushed in from the state of FIG. 4B. As shown in FIGS. 4B and 4C, by sliding the baffle plate 124 along the tube 114, the organic sludge 136 adhering to the tube 114 is scraped off and put on the drainage flow. It can be discharged from the drain port 108.

  Various resins can be used for the material of the tube 114 and the baffle plate 124. Therefore, the chemical resistance of the tube 114 and the baffle plate 124 can be arbitrarily increased, and the surface free energy thereof can be reduced to suppress the adhesion of the organic sludge 136. For example, in the present embodiment, the tube 114 and the baffle plate 124 are made of polypropylene. Polypropylene is excellent in chemical resistance and has low surface free energy, so that it is difficult for organic sludge 136 and the like to be stained. Therefore, it is suitable as a material for the tube 114 and the baffle plate 124.

  As described above, in the heat exchanger 100, the tube 114 and the baffle plate 124 are made of polypropylene, and the baffle plate 124 is slidable, so that the organic sludge 136 in the shell is easily scraped off. It is possible. Furthermore, since a large amount of resin is used, the overall weight is light, and the baffle plate 124 is also light so that it can be easily slid. Therefore, the maintenance by sliding the baffle plate 124 is lightly burdensome in terms of labor and cost, and can be performed on a daily basis, thereby maintaining high heat exchanger performance.

  In each drawing, the shell 106 is illustrated as being transparent, but the shell 106 may actually be entirely transparent or partly transparent. For example, a transparent material such as a vinyl chloride resin may be used as the material. According to this configuration, the state of the tube 114 and the baffle plate 124 in the shell can be visually recognized, so that the heat exchanger 100 can be maintained more easily. Become.

(First embodiment)
FIG. 5 is a schematic diagram of the heat exchange system 100a according to the first embodiment. FIG. 5A is a diagram illustrating the communication pipe, and the baffle plate 124 is omitted for simplicity. FIG.5 (b) is AA sectional drawing of Fig.5 (a). In the following embodiments, the heat exchanger 100 described above and the components included therein are denoted by the same reference numerals, and the description thereof is omitted.

  As shown to Fig.5 (a), in the heat exchange system 100a of 1st Embodiment, the communication pipe 140 and the gasket 144 are provided. The communication pipe 140 communicates the inlet 120 that supplies the heat medium into the tube of the heat exchanger 100 and the water supply port 104 that supplies the waste water to the outside of the tube of the heat exchanger, that is, inside the shell 106. A syringe 142 is disposed in the communication pipe 140, and a gasket 144 is movably disposed in the syringe.

  According to the said structure, even if it is a case where a high pressure is suddenly applied to one of the inside of a tube and the tube exterior (inside of a shell), the differential pressure | voltage can be relieve | moderated. Specifically, when a high pressure is applied to the water supply port 104 of the shell 106, the gasket 144 moves to the inlet 120 side of the tube 114. The reverse is also true. Therefore, according to the heat exchange system 100a of the first embodiment, even if the pressure inside or outside the tube fluctuates suddenly, it can be alleviated, and damage to the heat exchanger due to pressure fluctuation (particularly It is possible to suitably prevent (damage of the tube).

  Further, as shown in FIG. 5A, the heat exchange system 100a of the first embodiment further includes a light transmittance meter 146 for measuring the light transmittance inside the shell 106. Specifically, as shown in FIGS. 5A and 5B, inside the shell 106, a light source 148a (for example, an LED) that emits light and a light receiver 148b (for example, a light receiver 148b that receives light from the light source 148a) are provided. Photocouplers) are disposed and connected to a light transmissometer 146 disposed outside the shell 106.

  According to the above configuration, the light transmittance of the waste water outside the tube, that is, inside the shell can be obtained by calculating the ratio of the light received by the light receiver 148b out of the light emitted from the light source 148a. As a result, the degree of contamination inside the shell 106 can be grasped without disassembling the heat exchanger 100 or sampling waste water, and the cleaning timing of the heat exchanger 100 can be estimated.

  Further, when the heat exchanger 100 is disposed horizontally as shown in FIG. 5, the water supply port 104 and the drain port 108 may be disposed upward. Discharged air, well water, and seawater tend to accumulate in the heat exchanger 100 because dissolved air is deposited. For this reason, by installing the water supply port 104 and the drain port 108 upward, it becomes possible to quickly discharge the dissolved air to the outside of the heat exchanger.

(Second Embodiment)
FIG. 6 is a schematic diagram of a heat exchange system 100b according to the second embodiment. As shown in FIG. 6, in the heat exchange system 100b of 2nd Embodiment, the case where the heat exchanger 100 is installed vertically is illustrated.

  As shown in FIG. 6, in the heat exchange system 100b of the second embodiment, the fluid outlet 122 (heat medium outlet) flowing in the tube and the fluid outlet 108 (drainage) flowing outside the tube (in the shell). The conductivity meters 150a and 150b are respectively disposed at the outlets of the two. Thereby, the damage inside the heat exchanger can be detected at an early stage by monitoring the conductivity of the fluid flowing inside the tube and the drainage flowing outside the tube.

  As an example of the assumed situation, the conductivity is low when river water is used as the heat medium, and the conductivity is higher than that of river water if the drainage contains an organic solvent. And if the drainage leaks into the heat medium, it cannot be returned to the river as it is. Therefore, by observing the conductivity of the heat medium outlet 122 (river water), it can be determined that leakage has occurred (broken) when the conductivity increases.

  In addition, in the heat exchange system 100b, although the structure which has arrange | positioned a conductivity meter in both the outflow port 122 and the drain port 108 was illustrated, it is not limited to this. The conductivity meter may be disposed at at least one of the outlet of the fluid flowing inside the tube or the outlet of the fluid flowing outside the tube. In such a configuration, depending on the type of the fluid, etc. It is possible to set appropriately.

  Moreover, in this embodiment, as shown in FIG. 6, the heat exchange system 100b is installed vertically. The term “vertical placement” refers to a state in which the lid body 106a (the end face of one end of the shell 106) on which the inlet 120 and the outlet 122 of the tube 114 are arranged is arranged on the upper side.

  Here, the water supply port 104 and the drain port 108 of the shell 106 are disposed on the side surface 106 b of the shell 106, and the drain port 108 is disposed on the upper side (the tube 114 side) of the collecting portion 118. For this reason, even if drainage is extracted from the drainage port 108 when the heat exchange system 100b is replaced, the drainage remains below the drainage port 108.

  In view of this, a drainage valve 152 is provided on the lid 106c on the lower side of the shell 106 (the end face at the other end of the shell 106). Thereby, even if it is a case where the heat exchanger 100 is arrange | positioned vertically as shown in FIG. 6, the waste_water | drain can be discharged | emitted out of a shell by opening the valve | bulb 152. FIG. Therefore, it becomes possible to install and operate the heat exchanger 100 in a vertical orientation, and the degree of freedom of installation can be increased.

(Third embodiment)
FIG. 7 is a schematic diagram of a heat exchange system 100c according to the third embodiment. Fig.7 (a) is a perspective view which shows the whole heat exchanger 100, FIG.7 (b), (c) is an expanded sectional view in the dashed-dotted line of Fig.7 (a).

  As described above, the baffle plates 124 are connected by the frame 128 (see FIG. 3B). 7A and 7C, in the heat exchange system 100c of the third embodiment, the frame 128 is inserted through the baffle plate 124 disposed on the most downstream side of the shell 106. . The protruding portion functions as a stopper 128 a that restricts the baffle plate 124 from reaching the end of the tube 114.

  Since the tube 114 and the gathering portion 118 are molded of resin, the processing accuracy cannot be increased to a certain degree and expands and contracts depending on the temperature. Therefore, there is a high possibility that the position of the fixing portion of the tube 114 is shifted from the position of the through hole 130 of the baffle plate 124. Therefore, if the baffle plate 124 is brought close enough to contact the collecting portion 118, the through hole 130 and the tube 114 are strongly rubbed, and the tube 114 may be damaged.

  On the other hand, by providing the stopper 128a, when the baffle plate 124 is slid with respect to the shell 106, the baffle plate 124 is restricted from reaching the fixed portion with the collecting portion 118 at the end of the tube 114. be able to. Therefore, it is possible to prevent damage to the fixed portion at the end of the tube 114.

  Here, in the present embodiment, the outer diameter of the baffle plate 124 described above is substantially equal to the inner diameter of the shell 106. As shown in FIG. 7B, the outer edge 124a of the baffle plate 124 is tapered. Therefore, the sliding resistance can be reduced while the baffle plate and the inner wall of the shell are in contact with each other. As a result, by sliding the baffle plate 124, not only the outer surface of the tube 114 but also the dirt attached to the inner surface of the shell 106 can be removed. Therefore, it becomes possible to improve the cleanability of the heat exchanger 100 and improve the maintainability.

(Fourth embodiment)
FIG. 8 is a schematic view of a heat exchange system 100d according to the fourth embodiment, schematically showing the overall configuration. As shown in FIG. 8, in the heat exchange system 100d of the fourth embodiment, two heat exchangers (a plurality of heat exchangers 100) are connected simultaneously. In the following description, for the sake of convenience, the above-described heat exchanger 100 is referred to as a first heat exchanger 200a and a second heat exchanger 200b.

  Specifically, the water supply valves 212a and 212b are arranged at the water supply ports 104 of the first heat exchanger 200a and the second heat exchanger 200b, respectively. Moreover, the drain valve 214a and the drain valve 214b are each arrange | positioned at the drain port 108 of the 1st heat exchanger 200a and the 2nd heat exchanger 200b.

  On the other hand, inflow valves 216a and 216b are arranged at the inlet 120 of the first heat exchanger 200a and the second heat exchanger 200b, respectively. Outflow valves 218a and 218b are arranged at the outlet 122 of the first heat exchanger 200a and the second heat exchanger 200b, respectively.

  According to the above configuration, a plurality of heat exchangers can be switched and operated. Specifically, the second heat exchanger 200b is stopped by opening the valve connected to the first heat exchanger 200a and closing the valve connected to the second heat exchanger 200b. Only the heat exchanger 200a can be operated. Conversely, if the valve connected to the second heat exchanger 200b is opened and the valve connected to the first heat exchanger 200a is closed, the first heat exchanger 200a is stopped, and the second heat exchanger is Only 200b can be driven. Thereby, it becomes possible to continue the heat exchange process in another heat exchanger while stopping only the heat exchanger that performs cleaning among the plurality of heat exchangers.

  In the heat exchange system 100d, the heat exchange process can be performed in the two heat exchangers by opening all the valves connected to the first heat exchanger 200a and the second heat exchanger 200b. . Accordingly, it is possible to operate such that one heat exchanger is normally operated and when the load increases, heat exchange processing is performed by two heat exchangers. In addition, in this embodiment, although the structure which connects two heat exchangers simultaneously was illustrated, it is not limited to this, You may connect three or more heat exchangers simultaneously.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  The present invention includes a shell and a plurality of resin-made tubes accommodated in the shell, and includes a heat exchanger that performs heat exchange between a fluid flowing in the tube and a fluid flowing outside the tube. Can be used for the system.

DESCRIPTION OF SYMBOLS 100 ... Heat exchanger, 100a ... Heat exchange system, 100b ... Heat exchange system, 100c ... Heat exchange system, 100d ... Heat exchange system, 102 ... Drain tank, 104 ... Water inlet, 106 ... Shell, 106a ... Lid, 106b ... Side surface, 106c ... Cover body, 108 ... Drain port, 110 ... Treatment tank, 112a ... Flange, 112b ... Flange, 114 ... Tube, 116 ... Collecting part, 116a ... Division, 116b ... Division, 118 ... Collecting part, 120 ... Inlet, 122 ... Outlet, 124 ... Baffle plate, 124a ... Outer edge, 125 ... Internal unit, 126 ... Support shaft, 128 ... Frame, 128a ... Stopper, 130 ... Through hole, 132 ... Notch, 136 ... Organic sludge, 140 ... Communication tube, 142 ... Syringe, 144 ... Gasket, 146 ... Light transmittance meter, 148a ... Light source, 148b ... 150a ... conductivity meter, 150b ... conductivity meter, 152 ... valve, 200a ... first heat exchanger, 200b ... second heat exchanger, 212a ... water supply valve, 212b ... water supply valve, 214a ... drain valve, 214b ... Drain valve, 216a ... Inflow valve, 216b ... Inflow valve, 218a ... Outflow valve, 218b ... Outflow valve

Claims (7)

A heat exchange system including a shell and a plurality of resin-made tubes accommodated in the shell, and including a heat exchanger that performs heat exchange between a fluid flowing in the tube and a fluid flowing outside the tube Because
It comprises a communication pipe that allows the inside and outside of the tube of the heat exchanger to communicate with each other, and a gasket that is movably disposed in the communication pipe, and reduces the pressure difference inside and outside the tube. Heat exchange system. A heat exchange system including a shell and a plurality of resin-made tubes accommodated in the shell, and including a heat exchanger that performs heat exchange between a fluid flowing in the tube and a fluid flowing outside the tube Because
A heat exchange system comprising a conductivity meter disposed at at least one of an outlet of a fluid flowing in the tube and an outlet of a fluid flowing outside the tube. A heat exchange system including a shell and a plurality of resin-made tubes accommodated in the shell, and including a heat exchanger that performs heat exchange between a fluid flowing in the tube and a fluid flowing outside the tube Because
A heat exchange system comprising a light transmittance meter for measuring light transmittance inside the shell. A heat exchange system including a shell and a plurality of resin-made tubes accommodated in the shell, and including a heat exchanger that performs heat exchange between a fluid flowing in the tube and a fluid flowing outside the tube Because
The heat exchanger is
An inlet and an outlet of the fluid flowing in the tube are arranged at one end face of the shell,
An inlet and an outlet for fluid flowing outside the tube are arranged on the side of the shell,
A heat exchange system, wherein a drainage valve is installed on an end face of the other end of the shell. A heat exchange system including a shell and a plurality of resin-made tubes accommodated in the shell, and including a heat exchanger that performs heat exchange between a fluid flowing in the tube and a fluid flowing outside the tube Because
A heat exchange system characterized in that a plurality of the heat exchangers can be connected at the same time and can be switched for operation. A heat exchange system including a shell and a plurality of resin-made tubes accommodated in the shell, and including a heat exchanger that performs heat exchange between a fluid flowing in the tube and a fluid flowing outside the tube Because
A baffle plate through which the plurality of tubes penetrate and slidable with respect to the shell;
The heat exchange system according to claim 1, wherein the baffle plate has an outer diameter substantially equal to an inner diameter of the shell and has an outer edge tapered. A heat exchange system including a shell and a plurality of resin-made tubes accommodated in the shell, and including a heat exchanger that performs heat exchange between a fluid flowing in the tube and a fluid flowing outside the tube Because
A baffle plate through which the multiple tubes penetrate and slidable with respect to the shell;
A heat exchange system comprising: a stopper that restricts the baffle plate from reaching the end of the tube.

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