JP2009174963A - Cooling air outlet louver of heating element storage facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a temperature rise of a building frame concrete of a cooling air outlet part. <P>SOLUTION: Air channels for cooling 34a, 34b and 34c are set on an outer side face of a louver end support column 23. Cooling air outlet louvers 32a, 32b, 32c are formed by connecting a cooling air line 35, in which an air inlet 41a is disposed in a lower plenum part 15 of a cell chamber 5, to the lower ends of the respective cooling air channel 34a, 34b, 34c, and by communicatively connecting an upper channel forming box 42 having air outlets 44a, 44b, 44c of the side face downstream in the cooling air flow direction to the upper end. The heat conducted from a louver plate 27 exposed to the high temperature cooling air 22a at the cooling air outlet 18 to the louver end support column 23 is cooled by leading the low temperature cooling air 22 of the lower plenum part 15 to flow to the cooling air channel 34a, 34b, 34c using the pressure difference between the high temperature cooling air 22a after used for cooling a solidified glass and the low temperature cooling air 22 in the lower plenum part15. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a heating element storage facility in which a heating element containing a radioactive substance is stored in a cell chamber, and decay heat generated from the radioactive substance is removed by cooling air that is circulated by a natural ventilation system. The present invention relates to a cooling air outlet louver provided at a cooling air outlet of a cell chamber.

  Among radioactive materials (radioactive waste) discarded in nuclear power plants, high-level radioactive liquid waste is melted by denitrating, drying, and calcining the waste liquid, and then mixing the resulting calcined body with glass raw material to melt it. A vitrified body is formed by performing a vitrification process in which an object is poured into a stainless canister and solidified.

  Since non-combustible waste becomes low-level radioactive waste, after compression-molding into a disk shape, the required number of the disk-shaped compression-molded bodies are sealed in the same container as the above canister, and radioactive. It is supposed to be a waste body.

  The above-mentioned vitrified body and radioactive waste are supposed to be finally disposed of in an underground disposal site. Further, it is considered that the vitrified body or radioactive waste is stored in a storage facility provided separately from the disposal site until final disposal at the disposal site. Furthermore, since the vitrified body or radioactive waste is a heating element that emits a relatively high temperature due to the decay heat of the radioactive substance, the heating element containing the radioactive substance such as vitrified body or radioactive waste is In a storage facility, it is considered to store while appropriately removing the decay heat generated.

  As the heating element, for example, as a heating element storage facility (a glass solid storage facility) for storing the vitrified material while appropriately removing the decay heat of the radioactive substance, an outline of an example is shown in FIG. Such a configuration has been conventionally proposed.

  That is, the heating element storage facility shown in FIG. 5 is provided with a transfer chamber 3 for handling the vitrified body 1 using a crane in the building 2, and the vitrified body immediately below the floor slab 4 of the transfer chamber 3. A cell room (storage room) 5 surrounded by a thick concrete shielding wall is constructed as one storage area. Inside the cell chamber 5, a large number of cylindrical storage tubes 6 for storing the vitrified body 1 are arranged at required intervals in the front-rear and left-right directions, and the upper ends of the storage tubes 6 are arranged at the upper ends. It is configured to be suspended from and supported by the floor slab 4 serving as a ceiling portion of the cell chamber 5 so as to open to the transfer chamber 3 side. As a result, a large number of glass solid bodies 1 are stored in a stacked state in the respective storage tubes 6 from above, and then the storage tube plugs 7 are packed in the upper ends of the respective storage tubes 6 so that the upper end openings are stored in the storage tube lids. The vitrified body 1 is sealed in the storage tube 6 by being closed by 8.

  Further, in order to appropriately remove the decay heat of the radioactive material generated from the vitrified body 1, a ventilation pipe (outer cylinder) 9 is arranged around each of the storage pipes 6, and the required ventilation pipes 9 are required. By supporting the height portion with a support frame (not shown) provided in the cell chamber 5, a cylindrical flow path 10 is formed between the outer circumference of each storage pipe 6 and the ventilation pipe 9. is there. Further, the upper plenum forming plate 12 closes the upper ends of the adjacent ventilation pipes 9 and the side wall flow path forming plate 11 provided along the inner surface of the side wall of the cell chamber 5. An upper plenum portion 13 is defined above the passage 10. Similarly, the lower plenum portion 15 is closed below the cylindrical flow path 10 by closing the lower end portions of the adjacent ventilation pipes 9 and the side wall flow path forming plate 11 with the lower plenum forming plate 14. Is defined as a partition.

  A cooling air inlet 16 is provided at the lower end of one side wall (the right side wall in the figure) of the cell chamber 5 which is one end of the lower plenum portion 15 and extends in the vertical direction, and the upper end extends into the atmosphere. The lower end portion of the opened inlet shaft (air supply passage) 17 is connected in communication. Further, a cooling air outlet 18 is provided at the upper end of the other side wall (left side wall in the figure) of the cell chamber 5 which is the end of the upper plenum 13 opposite to the cooling air inlet 16. A lower end portion of a chimney-shaped outlet shaft (exhaust tower) 19 extending in the vertical direction to a position higher than the inlet shaft 17 is configured to be connected in communication. As a result, outside air (atmosphere) taken in from the upper end of the inlet shaft 17 is guided downward through the inlet shaft 17 and then taken into the lower plenum portion 15 through the cooling air inlet 16. The cooling air 20 can be guided to the cylindrical flow path 10 on the outer periphery of each of the storage tubes 6, and the cooling air 20 guided to the cylindrical flow path 10 generates heat due to decay heat of the radioactive material. The glass solid body 1 can be indirectly cooled via the storage tube 6.

  The cooling air 20 used for indirect cooling of the vitrified body 1 in each of the cylindrical flow paths 10 is heated by absorbing the decay heat of the radioactive substance, thereby generating buoyancy. For this reason, the high-temperature cooling air 20a after being used for cooling the vitrified body 1 rises from each cylindrical flow path 10 to the upper plenum portion 13, and then passes through the cooling air outlet 18 to the outlet shaft 19. Then, it is further raised in the outlet shaft 19 and released into the atmosphere.

  At this time, since the outlet shaft 19 is set to be higher than the inlet shaft 17, the high-temperature cooling air 20a in the outlet shaft 19 heated by being used for cooling the vitrified body 1 is used. And the lower plenum portion 15 by a natural ventilation method using a draft force resulting from a pressure difference with the low-temperature (normal temperature) cooling air 20 guided from the inlet shaft 17 through the cooling air inlet 16 to the lower plenum portion 15. In this way, new cooling air 20 is continuously taken into the respective cylindrical flow paths 10 so that the vitrified body 1 during storage can be continuously cooled.

  Reference numeral 21 denotes a shielding plate (maze plate) provided at a required position in the longitudinal direction of the inlet shaft 17 and the outlet shaft 19 (see, for example, Patent Document 1).

  Further, in a heating element storage facility (radiocontaminant container storage) having the same configuration as described above, while ensuring a smooth flow of the cooling air 20 and 20a to the cooling air inlet 16 and the cooling air outlet 18, the cell chamber It is also considered that a louver is provided so as to prevent passage of radiation emitted from the radioactive material in the vitrified body 1 stored in the glass 5 (see, for example, Patent Document 2). .

  Among the louvers provided at the cooling air inlet 16 and the cooling air outlet 18, the present applicant has a configuration as shown in FIG. 6 and FIG. 7 as an outline of an example of the cooling air outlet louver provided at the cooling air outlet 18. Are planning things.

  That is, the cooling air outlet louvers 22a, 22b, and 22c shown in FIGS. 6 and 7 are vertically moved from the bottom to the ceiling along the side walls 18a in the width direction perpendicular to the cooling air flow direction in the cooling air outlet 18. A pair of extending louver end struts 23 are arranged and extend vertically from the bottom of the cooling air outlet 18 to the ceiling between the louver end struts 23 according to the width dimension of the cooling air outlet 18. The required number, for example, four of the louver intermediate struts 24 are arranged at a required interval in the width direction, and the upper end portions and the lower end portions of the struts 23 and 24 are arranged along the ceiling surface of the cooling air outlet 18. Are connected by a top plate 25 extending in the width direction and a bottom plate 26 extending in the width direction along the bottom surface of the cooling air outlet 18.

  A louver plate 27 made of a material having a shielding ability such as SUS is provided between the louver end column 23 and the louver intermediate column 24 adjacent to the louver end column 23 and between the louver intermediate columns 24 adjacent to each other. In the state in which the required angle is inclined from the upstream side to the downstream side in the cooling air flow direction, the components are attached in multiple stages at the required intervals in the vertical direction. In FIG. 7, the cooling air outlet 18 includes a first cooling air outlet louver 22a having a louver plate 27 that is inclined downward at a required angle from the upstream side to the downstream side in the cooling air flow direction. Contrary to the first cooling air outlet louver 22a, a second cooling air outlet louver 22b comprising a louver plate 27 inclined upward at a required angle from the upstream side to the downstream side in the cooling air flow direction. And a third cooling air outlet louver 22c comprising a louver plate 27 inclined downward by a required angle from the upstream side to the downstream side in the cooling air flow direction in the same manner as the first cooling air outlet louver 22a. In this configuration, the cooling air circulation direction is arranged in order from the upstream side and arranged in triplicate. Thereby, the air flow path inclined at a required angle along the cooling air flow direction formed between the louver plates 27 adjacent in the vertical direction in the first and third cooling air outlet louvers 22a and 22c, and In the second cooling air outlet louver 22b, the air flow passages inclined downward by a required angle along the cooling air flow direction formed between the louver plates 27 adjacent in the vertical direction are alternately connected. Thus, the cooling air outlet louvers 22a, 22b, and 22c provided in the above-mentioned three stations are formed in a continuous shape while alternately bending each air flow path in the vertical direction along the cooling air circulation direction. Radiation reaching the cooling air outlet 18 from the cell chamber 5 side is reliably shielded by the louver plate 27.

  Above the lower end portion of the uppermost louver plate 27 of each of the cooling air outlet louvers 22a, 22b, 22c, a lower position than the upper end portion of the uppermost louver plate 27 is made of a material having a shielding ability such as SUS. A top shielding member 28 formed in a required shape having a lower end portion, for example, at a position lower than the upper end portion of the uppermost louver plate 27, with a required distance from the lower end portion of the uppermost louver plate 27. A side-shaped laterally trapezoidal top-shaped shielding member 28 having an inclined surface at the lower end facing each other is arranged over the entire length in the width direction, and the upper end of the top-shielding material 28 is attached to the top plate 25 positioned on the upper side. As a configuration. Further, a heat insulating material 29 is interposed between the uppermost louver plate 27 and the top plate 25 so as to cover the top shielding material 28.

  Further, below the lower end portion of the lowermost louver plate 27 of the bottom plate 26 of each of the cooling air outlet louvers 22a, 22b, 22c, the lower end portion of the lowermost louver plate 27 is made of a material having shielding ability such as SUS. A bottom shielding member 30 formed in a required shape having an upper end at a higher position, for example, a portion closer to the upper end of the lowermost louver plate 27 at a position higher than the lower end of the lowermost louver plate 27 A side-shaped sideways trapezoidal bottom shielding material 30 having an upper end inclined surface facing each other at an interval is disposed over the entire length in the width direction, and the lower end of the bottom shielding material 30 is positioned below the bottom shielding material 30. It is set as the structure attached to the baseplate 26 to do. Further, a heat insulating material 29 is provided between the lowermost louver plate 27 and the bottom plate 26 so as to cover the bottom shielding material 30. Accordingly, the radiation passing above the uppermost louver plate 27 can be shielded by the top shielding member 28, and the radiation passing below the lowermost louver plate 27 can be shielded by the bottom shielding member 30. It can be shielded with. Furthermore, the cooling air 20a guided to the upper plenum part 13 after being used for cooling the vitrified body 1 (see FIG. 5) in the cell chamber 5 of the heating element storage facility is heated to about 85 ° C. From the upper plenum portion 13 of the cell chamber 5, the cooling air 20a heated to high temperature is sent to the outlet shaft 19 (see FIG. 5) through the cooling air outlet louver 22 of the cooling air outlet 18. The heat transfer from the high-temperature cooling air 20a to the frame concrete forming the ceiling surface and the bottom surface of the cooling air outlet 18 is provided with a heat insulating material 29 arranged on the upper side of the uppermost louver plate 27; It can be suppressed by a heat insulating material disposed below the lower louver plate 27. Reference numeral 31 denotes a heat insulating material with a cover (not shown) attached to the surface of the peripheral wall of the cooling air outlet 18 except for the mounting locations of the cooling air outlet louvers 22a, 22b, 22c. 6 and 7, the same components as those shown in FIG. 5 are denoted by the same reference numerals.

JP 2007-155510 A Japanese Unexamined Patent Publication No. 2000-193895

  However, in the cooling air outlet louvers 22 a, 22 b, and 22 c configured as shown in FIGS. 6 and 7, the louver end column 23 to which the louver plate 27 is attached is placed along both side walls 18 a of the cooling air outlet 18. Since it is installed, as described above, the louver than the louver plate 27 exposed to the high-temperature cooling air 20a of about 85 ° C. heated by being used for cooling the vitrified body 1 in the cell chamber 5. The heat transmitted to the end column 23 is moved to the both side walls 18a of the cooling air outlet 18 as it is. Therefore, it is generally desirable to limit the temperature of the frame concrete to 65 ° C. or less. However, in the cooling air outlet louvers 22a, 22b, and 22c having the above-described configuration, the both side walls 18a of the cooling air outlet 18 are centered. Actually, there is a concern that the concrete temperature may exceed the limit in a wide area around the place where the cooling air outlet louvers 22a, 22b, and 22c are installed.

  Therefore, the present invention provides a high-temperature cooling led to a cooling air outlet after being used for cooling a heating element containing a radioactive substance such as a vitrified substance or radioactive waste in a cell room of a heating element storage facility. The concrete temperature at the cooling air outlet is limited by making improvements so as to reduce the heat transferred from the louver end strut to which the louver plate exposed to air is attached to both sides of the cooling air outlet. An object of the present invention is to provide a cooling air outlet louver of a heating element storage facility that can prevent the possibility of exceeding.

  In order to solve the above problems, the present invention, corresponding to the invention according to claim 1, stores a heating element in the cell chamber and introduces it into the lower plenum portion at the lower end of the cell chamber from the inlet shaft. Cooling air and high-temperature cooling that is heated by being supplied to the cooling of the heating element and is raised to the upper plenum part at the upper end of the cell chamber and then led to the outlet shaft through the cooling air outlet It is possible to continuously cool the heating element during storage by continuously taking in new cooling air into the lower plenum by the natural ventilation method using the draft force based on the pressure difference with air. In the cooling air outlet louver provided at the cooling air outlet in the heating element storage facility that can be formed, the cooling air outlet is arranged to extend vertically at both ends in the width direction of the cooling air outlet, and there are many louver plates on the inner surface thereof. A cooling air flow path is attached to the louver end strut attached to the entire length in the vertical direction, and a cooling air introduction line for guiding low-temperature cooling air to one end of the cooling air flow path is provided. The other end of the cooling air flow path is connected to the downstream side of the louver installation location at the cooling air outlet.

  In addition, the cooling air introduction line connected to one end of the cooling air flow path in the above configuration is configured to guide the low-temperature cooling air in the lower plenum portion of the cell chamber.

  Further, in each of the above configurations, a channel box is attached to the outer surface of the louver end column over the entire length in the vertical direction, and a cooling air flow path is provided between the louver end column and the channel box, and the louver end The column support is configured to be disposed on both side walls of the cooling air outlet of the heating element storage facility via the channel box.

  In each configuration described above, a lower flow path forming box is provided on the lower side of the lowermost louver plate inside the lower end of the louver end column, and the lower flow path forming box is attached to the louver end column. The lower plenum portion of the cell chamber of the heating element storage facility is provided at the air inlet provided in the upstream side surface portion in the cooling air flow direction of the lower flow path forming box while providing a lower communication port communicating with the lower end portion of the cooling air flow path And an upper end portion of a cooling air introduction pipe extending in the vertical direction through the lower plenum forming plate and the upper plenum forming plate is connected.

  Further, in the above configuration, an upper channel forming box is provided above the uppermost louver plate inside the upper end of the louver end column, and the upper channel forming box is provided with the cooling attached to the louver end column. The upper communication port that communicates with the upper end of the air flow channel is provided, and the air outlet is provided on the downstream side surface of the upper flow channel forming box in the cooling air flow direction.

According to the cooling air outlet louver of the heating element storage facility of the present invention, the following excellent effects are exhibited.
(1) By storing a heating element in the cell chamber and introducing it from the inlet shaft to the lower plenum part at the lower end of the cell chamber, the cooling air is used for cooling the heating element. The lower plenum is heated by a natural ventilation system using a draft force based on a pressure difference with high-temperature cooling air that is led to the outlet shaft through the cooling air outlet after being heated and raised to the upper plenum at the upper end of the cell chamber. Cooling air outlet louver provided at the cooling air outlet in the heating element storage facility in which new cooling air is continuously taken into the unit so that the heating element during storage can be continuously cooled. , The cooling air flow path is arranged in the vertical direction on the louver end column, which is arranged to extend in the vertical direction at both ends in the width direction of the cooling air outlet and the louver plate is attached in multiple stages on the inner surface thereof. A cooling air introduction line for connecting the cooling air passage is connected to one end of the cooling air passage and the other end of the cooling air passage is connected to the cooling air. A structure formed by communicating with the downstream side of the louver installation location at the outlet, more specifically, a cooling air introduction line connected to one end of the cooling air flow path is connected to the low-temperature cooling air in the lower plenum portion of the cell chamber As described above, the cooling air outlet louver provided at the cooling air outlet in a heated state by being used for cooling the glass solidified body in the cell chamber. Based on the draft force resulting from the pressure difference between the high-temperature cooling air after passing through and the low-temperature cooling air in the lower plenum, the low-temperature cooling air in the lower plenum is passed through the cooling air introduction line. Continuously leading to the cooling air flow path that is annexed to the server end posts, after circulating the cooling flow path can be discharged to the downstream side of the louver installation location of the cooling air outlet. As a result, heat transferred from the louver plate exposed to the high-temperature cooling air flowing through the cooling air outlet to the louver end strut is exchanged for heat exchange with the low-temperature cooling air flowing through the cooling flow path. Can do. Therefore, since the louver end column can be cooled, an increase in the temperature of the concrete around the cooling air outlet louver installation location at the cooling air outlet can be suppressed, and the concrete temperature of the cooling air outlet portion can be suppressed. It is possible to prevent the risk of exceeding the limit. (2) A channel box is attached to the outer surface of the louver end strut over the entire length in the vertical direction, a cooling air flow path is provided between the louver end strut and the channel box, and the louver end strut is By adopting a configuration that is arranged on both side walls of the cooling air outlet of the heating element storage facility via the channel box, a configuration in which a cooling air flow path is attached to the louver end column can be easily realized. it can.
(3) A lower flow path forming box is provided below the lowermost louver plate inside the lower end of the louver end strut, and cooling air attached to the lower flow path forming box is attached to the louver end strut. A lower communication port that communicates with the lower end of the flow path is provided, and an air inlet provided on an upstream side surface of the lower flow path forming box in the cooling air flow direction opens to a lower plenum portion of a cell chamber of the heating element storage facility. An uppermost louver plate having an air intake and connecting an upper end portion of a cooling air introduction pipe extending vertically through the lower plenum forming plate and the upper plenum forming plate, and further inside the upper end portion of the louver end column An upper flow path forming box is provided above the upper flow path, and the upper flow path forming box is provided with an upper communication port that communicates with the upper end of the cooling air flow path attached to the louver end column. Bock In the case where a plurality of cooling air outlet louvers are connected to the cooling air outlet, the louver end of each cooling air outlet louver It is possible to easily realize a configuration for guiding the low-temperature cooling air of the lower plenum portion of the cell chamber to the lower end portion of each cooling air flow path attached to each supporting column, and the louver end column of each cooling air outlet louver The structure which discharges the cooling air discharged | emitted from the upper end part of each cooling air flow path attached to to the downstream of the louver installation location in a cooling air exit is easily realizable.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  1 to 4 show an embodiment of the cooling air outlet louver of the heating element storage facility of the present invention, which is applied to a heating element storage facility for storing the glass solidified body 1 as a heating element similar to that shown in FIG. FIG. 6 shows an example of the case, like the cooling air outlet louvers 22a, 22b, and 22c shown in FIGS. 6 and 7, a pair of louver end struts 23 in the width direction of the cooling air outlet 18, and between them. Louver intermediate struts 24 arranged at required intervals, and between the louver end struts 23 and the adjacent louver intermediate struts 24, and between adjacent louver intermediate struts 24, the cooling air flow direction In the configuration in which the louver plates 27 inclined at a required angle from the upstream side to the downstream side are attached in multiple stages, the louver end struts 23 are arranged along the side walls 18a of the cooling air outlet 18 directly. Constitution Instead, the channel box 33 is attached to the outer surface of each louver end column 23 over the entire length in the vertical direction, and cooling air is provided between each louver end column 23 and the outer channel box 33. The flow paths 34a, 34b, and 34c are formed, and the louver end support columns 23 are disposed along the side walls 18a of the cooling air outlet 18 with the corresponding channel boxes 33 interposed therebetween. Further, a cell chamber is formed from the lower plenum portion 15 of the cell chamber 5 of the heating element storage facility to the lower end portion which is one end portion of the cooling air flow paths 34a, 34b, 34c formed outside the louver end column 23. 5 is provided with a cooling air introduction line 35 for guiding the cooling air 20 at a low temperature (normal temperature) before being used for cooling the glass solidified body 1 (see FIG. 5) as a heating element stored in the cooling unit 5. The cooling air outlet louvers 32a, 32b, and 32c are configured by communicating the upper ends of the air flow paths 34a, 34b, and 34c to the downstream side of the louver installation location in the cooling air outlet 18. Thereby, the high-temperature cooling air 20a of about 85 ° C. heated by being used for cooling the vitrified body 1 stored in the cell chamber 5 of the heating element storage facility is the upper plenum portion of the cell chamber 5 13, the cooling air exposed to the high-temperature cooling air 20a when being sent to the outlet shaft 19 (see FIG. 5) through the cooling air outlet 18 provided with the cooling air outlet louvers 32a, 32b, 32c. The louver end column 23 to which heat is transmitted from the louver plates 27 of the outlet louvers 32a, 32b, and 32c passes through the cooling air introduction line 35 from the lower plenum portion 15 of the cell chamber 5 and the cooling air flow paths 34a, 34b, The louver end column 23 can be cooled by exchanging heat with the low-temperature cooling air 20 led to 34c.

  More specifically, the cooling air outlet 18 is provided with a louver plate 27 having a louver plate 27 inclined downward by a required angle along the cooling air flow direction, similar to that shown in FIGS. Like the first cooling air outlet louver 32a, the second cooling air outlet louver 32b having the outlet louver 32a, the second cooling air outlet louver 32b having the louver plate 27 inclined at a required angle upward along the cooling air circulation direction, and the cooling air circulation. A third cooling air outlet louver 32c having a louver plate 27 inclined downward by a required angle along the direction is arranged in a triple from the upstream side in the cooling air flow direction.

  Each cooling air outlet louver 32a, 32b, 32c has a lowermost louver plate 27 at a lower position between the louver end column 23 and the louver intermediate column 24 adjacent to the inside thereof. A series of lower flow path forming boxes 36 are integrally and airtightly attached to the bottom plate 26 in the cooling air circulation direction provided with a ceiling portion that is alternately bent in the vertical direction according to the inclination of the lower louver plate 27. Further, on the lower end portion of each louver end column 23 of each of the cooling air outlet louvers 32a, 32b, 32c, and on the corresponding one side wall of the lower flow passage forming box 36, the inside of the lower flow passage forming box 36 and Lower communication ports 37a, 37b, and 37c are formed to communicate with the lower ends of the cooling air flow paths 34a, 34b, and 34c provided on the outer surface of each louver end column 23, respectively.

  Further, three air inlets 38a, 38b, and 38c are provided at substantially equal intervals from the outer side in the width direction of the cooling air outlet 18 at the upper position on the upstream end face in the cooling air flow direction of the lower flow path forming box 36. In addition, a double L-shaped partition wall 39 for forming a flow path is provided inside the lower flow path forming box 36, and the three air inlets 38a and 38b are formed in the lower flow path forming box 36. , 38c are formed with divided flow paths 36a, 36b, 36c for individually communicating with the three lower communication ports 37a, 37b, 37c.

  Each air inlet 38a, 38b, 38c of the lower flow path forming box 36 has a downstream end portion of an individual connection duct 40 extending to the cell chamber 5 in parallel with the inner bottom surface of the cooling air outlet 18 of the heating element storage facility. One end portion is connected in communication. In the drawing, a configuration example in which the three connection ducts 40 arranged in the width direction of the cooling air outlet 18 are integrally connected is shown. However, the three connection ducts 40 arranged in the width direction of the cooling air outlet 18 are shown. You may make it isolate | separate separately.

  Furthermore, three cooling air introduction pipes 41 each having an air intake 41a that opens to the lower plenum portion 15 at the lower end of the cell chamber 5 are arranged along the side wall on the cooling air outlet 18 side in the cell chamber 5, The lower plenum forming plate 14 and the upper plenum forming plate 12 are disposed so as to extend in the vertical direction. At this time, the respective cooling air introduction pipes 41 are provided in order to support the ventilation pipes 9 (see FIG. 5) at required places in the longitudinal direction within a required fixing portion in the cell chamber 5, for example, inside the cell chamber 5. What is necessary is just to make it attach and support to the support frame 46 provided. The upper end portion of each cooling air introduction pipe 41 is connected to the other end portion which is the upstream end portion of each connection duct 40. Thereby, the lower communication ports 37a, 34a, 34b, 34c at the lower ends of the cooling air flow paths 34a, 34b, 34c respectively provided on the outer surface of the louver end column 23 at the cooling air outlet louvers 32a, 32b, 32c. The cooling air introduction pipe 41, the connection duct 40, and the divided flow paths 36a, 36b, and 36c in the lower flow path forming box 36 are sequentially arranged from the air inlet 41a disposed in the lower plenum portion 15 for each of 37b and 37c. Then, a cooling air introduction line 35 that can individually guide the cooling air 20 is configured.

  The uppermost position of the uppermost louver plate 27 at the upper end between the louver end struts 23 of the cooling air outlet louvers 32a, 32b, and 32c and the louver intermediate strut 24 adjacent to the inner side of each louver end louver A series of upper flow path forming boxes 42 are attached to the top plate 25 integrally and in an airtight manner in the cooling air flow direction provided with bottom portions alternately bent in the vertical direction according to the inclination of the upper louver plate 27. Further, the upper end of each louver end column 23 of each of the cooling air outlet louvers 32a, 32b, 32c and the corresponding one side wall of the upper flow path forming box 42 are connected to the inside of the upper flow path forming box 42. Upper communication ports 43a, 43b, and 43c are formed for communicating the upper end portions of the cooling air flow paths 34a, 34b, and 34c provided on the outer surface of each louver end column 23, respectively.

  Further, three air outlets 44a, 44b, and 44c are provided at substantially equal intervals from the inner side in the width direction of the cooling air outlet 18 at a lower position on the downstream end face in the cooling air flow direction of the upper flow path forming box 42. In addition, an L-shaped partition wall 45 for forming a flow path is provided double inside the upper flow path forming box 42, and the three upper communication ports 43a, 43a, The divided flow paths 42a, 42b, and 42c for individually communicating 43b and 43c with the three air outlets 44a, 44b, and 44c are formed. As a result, the cooling air outlet louvers 32a, 32b, and 32c are discharged from the cooling air passages 34a, 34b, and 34c provided on the outer surface of the louver end column 23 through the upper communication ports 43a, 43b, and 43c. The cooling air 20 passes through the divided flow paths 42a, 42b, 42c and the air outlets 44a, 44b, 44c in the corresponding upper flow path forming boxes 42, and the cooling air outlet louvers 32a in the cooling air outlet 18 respectively. , 32b, 32c can be discharged to a region downstream.

  A configuration in which the top shielding material 28 and the bottom shielding material 30 are arranged in the same manner as shown in FIGS. 6 and 7 inside the upper flow path forming box 42 and the lower flow path forming box 36. As described above, the upper flow path forming box 42 provided above the uppermost louver plate 27 in each of the cooling air outlet louvers 32a, 32b, 32c, and the lower portion provided below the lowermost louver plate 27. In any of the flow path forming boxes 36, radiation from the cell chamber 5 side can be reliably shielded.

  In FIG. 1, reference numeral 47 is a heat insulating material that covers the outer periphery of each cooling air introduction pipe 41, and 48 is a heat insulating material that covers the periphery of each connection duct 40. Further, although not shown, the surface of the ceiling portion of the lower flow path forming box 36 is also covered with a heat insulating material, so that the low-temperature cooling air 20 in the lower plenum portion 15 of the cell chamber 5 is supplied to each air. After being taken in from the intake port 41a, it is cooled through the cooling air introduction pipes 41, the connection ducts 40, the divided flow paths 36a, 36b, 36c in the lower flow path formation box 36, and the lower communication ports 37a, 37b, 37c. The temperature rise between the air flow paths 34a, 34b and 34c can be suppressed.

  Other configurations are the same as those shown in FIGS. 6 and 7, and the same components are denoted by the same reference numerals.

  In the heating element storage facility in which the cooling air outlet louvers 32a, 32b, and 32c having the above-described configuration are provided at the cooling air outlet 18, the glass solidification stored in the cell chamber 5 is the same as the heating element storage facility shown in FIG. After being heated by being used for cooling the body 1, the high-temperature cooling air 20 a led to the outlet shaft 19 through the cooling air outlet 18 and led to the lower plenum portion 15 from the inlet shaft 17 through the cooling air inlet 16. Continuous intake of new cooling air 20 from the lower plenum portion 15 into each cylindrical flow path 10 by a natural ventilation method using a draft force resulting from a pressure difference with the low-temperature (normal temperature) cooling air 20 to be applied. When the glass solid body 1 during storage was continuously cooled (see FIG. 5), it was heated by being used for cooling the glass solid body 1 in the cell chamber 5 as described above. After passing through the cooling air outlet louvers 32a, 32b, 32c provided in the cooling air outlet 18, the high-temperature cooling air 20a toward the outlet shaft 19 and the low-temperature cooling air 20 of the lower plenum portion 15 After the low-temperature cooling air 20 in the lower plenum portion 15 is introduced from each air intake 41a based on the draft force resulting from the pressure difference, as shown in FIG. 4 (in FIG. 4, the flow of the cooling air 20 is For convenience of illustration, the ceiling surface of the connection duct 40, each louver plate 27, and the top plate 25 are not shown), each cooling air introduction pipe 41, each connection duct 40, and the inside of the lower flow path formation box 36. It is made to flow into each divided flow path 36a, 36b, 36c. The cooling air 20 after passing through each of the divided flow paths 36a, 36b, 36c is guided to the cooling air flow paths 34a, 34b, 34c via the lower communication ports 37a, 37b, 37c, and the respective cooling airs. The flow paths 34a, 34b, and 34c are circulated from below to above. Thereafter, the cooling air 20 that has passed through the cooling air flow paths 34a, 34b, and 34c passes through the upper communication ports 43a, 43b, and 43c to the divided flow paths 42a, 42b, and 42c in the upper flow path forming box 42. After being guided and circulated through each of the divided flow paths 42a, 42b, 42c, it passes through the air outlets 44a, 44b, 44c and is located downstream of the cooling air outlet louvers 32a, 32b, 32c in the cooling air outlet 18. Will be released into the area.

  At this time, as described above, the high-temperature cooling air 20 a after being used for cooling the vitrified body 1 is provided in the cooling air outlet 18 from the upper plenum portion 15 of the cell chamber 5. 32b, 32c, the louver plates 27 exposed to the high temperature cooling air 20a are heated in the cooling air outlet louvers 32a, 32b, 32c, and the louver plates 27 Heat is transmitted to each louver end column 23, and each louver end column 23 is connected to each cooling air flow path 34a, 34b, 34c provided on the outer side surface thereof as described above. Since the low-temperature cooling air 20 guided from the lower plenum portion 15 of the cell chamber 5 is circulated, the louver end column 23 is cooled by heat exchange with the low-temperature cooling air 20. So divide.

  Therefore, the heat transmitted from each louver end column 23 to the both side walls 18a of the cooling air outlet 18 through the channel box 33 attached to the outer surface thereof is reduced.

  Further, the upper and lower ends of the cooling air outlet louvers 32a, 32b and 32c between the louver end struts 23 and the louver intermediate struts 24 adjacent to the inside thereof are respectively divided into flow paths 42a, 42b, 42c and upper flow path forming box 42 and lower flow path forming box 36 each provided with divided flow paths 36a, 36b, 36c are provided, and each divided flow path of each flow path forming box 42, 36 is provided. Since the low-temperature cooling air 20 guided from the lower plenum portion 15 of the cell chamber 5 is circulated through the 42a, 42b, 42c and the divided flow paths 36a, 36b, 36c as described above, the cooling air outlet 18 is provided. The heat transferred from the high-temperature cooling air 20a passing through to the flow path forming boxes 42 and 36 is divided into the internal divided flow paths 42a, 42b, 42c and the like. Since the heat is exchanged with the low-temperature cooling air 20 flowing through the divided flow paths 36a, 36b, and 36c, the cooling air outlet 18 passes through the upper and lower flow path forming boxes 42 and 36. The heat transferred to the ceiling and bottom of the machine is also reduced.

  As described above, according to the cooling air outlet louvers 32a, 32b, and 32c, it is possible to suppress an increase in the temperature of the concrete in the cooling air outlet 18 around the places where the cooling air outlet louvers 32a, 32b, and 32c are installed. Thus, the possibility that the concrete temperature at the cooling air outlet 18 exceeds the limit can be prevented.

  In addition, this invention is not limited only to the said embodiment, The vertical dimension and width dimension of cooling outlet louver 32a, 32b, 32c according to the vertical dimension and width dimension of the cooling air outlet 18 of a heat generating body storage facility. May be changed as appropriate. At this time, the number of louver intermediate struts 24 provided between the louver end struts 23 may be increased or decreased or the interval may be changed according to the width dimension.

  In addition, although the cooling air outlet 18 is provided with three cooling air outlet louvers 32a, 32b, 32c, only one cooling air outlet louver is provided, or two or four or more stations are arranged. The present invention can also be applied when a cooling air outlet louver is provided. In this case, according to the number of installed cooling air outlet louvers, the number of cooling air introduction lines 35, that is, the number of divisions of flow paths in the lower flow path formation box 36, the number of connection ducts 40 and cooling air introduction pipes 40, and the like. May be increased or decreased as appropriate, and further, the number of divisions of the flow paths in the upper flow path forming box 42 may be increased or decreased as appropriate.

  Cooling air flow paths 34a, 34b for allowing the cooling air 20 to flow through the entire length in the longitudinal direction to the louver end column 23 supporting the louver plate 27 at both ends in the width direction of the cooling air outlet louvers 32a, 32b, 32c. 34c, any structure other than the structure in which the channel box 33 is attached to the outer surface of the louver end column 23 may be adopted, for example, the louver end column 23 itself has a tubular structure.

  The lower plenum portion 15 of the cell chamber 5 is connected to the cooling air flow paths 34a, 34b, 34c attached to the louver end column 23 that supports the louver plate 27 at both ends in the width direction of the cooling air outlet louvers 32a, 32b, 32c. If the cooling air introduction line 35 can guide the cooling air 20 at a lower temperature, the positions of the divided flow paths 36a, 36b, 36c in the lower flow path forming box 36 are changed, and the shape of the connection duct 40 is changed. Alternatively, the cooling air introduction line 35 having any configuration may be employed, such as changing the piping path of the cooling air introduction pipe 41 or the arrangement of the air intake ports 41 in the lower plenum portion 15.

  Of course, various changes can be made without departing from the scope of the present invention.

It is a general | schematic cutting side view which shows one Embodiment of the cooling air exit louver of the heat generating body storage facility of this invention. It is an AA direction arrow line view of FIG. It is a BB direction arrow line view of FIG. It is a schematic diagram which shows the flow of the low temperature cooling air in the cooling air exit louver of FIG. It is a general | schematic cutting side view which shows the outline of an example of the vitrified body storage facility proposed conventionally. It is a general | schematic cutting side view which shows an example of the cooling air exit louver of the heat generating body processing facility which this applicant has planned conventionally. It is CC direction arrow line view of FIG.

Explanation of symbols

1 Vitrified body (heating element)
5 Cell Chamber 12 Upper Plenum Forming Plate 13 Upper Plenum Part 14 Lower Plenum Forming Plate 15 Lower Plenum Part 17 Inlet Shaft 18 Cooling Air Outlet 18a Side Wall 19 Outlet Shaft 20 Cooling Air 20a Hot Cooling Air 23 Louver End Column 27 Louver Plate 32a , 32b, 32c Cooling air outlet louver 33 Channel box 34a, 34b, 34c Cooling air flow path 35 Cooling air introduction line 36 Lower flow path forming box 37a, 37b, 37c Lower communication port 38a, 38b, 38c Air inlet 41 Cooling air Inlet pipe 41a Air intake port 42 Upper flow path forming box 43a, 43b, 43c Upper communication port 44a, 44b, 44c Air outlet

Claims (5)

  A heating element is stored in the cell chamber, and introduced into the lower plenum part at the lower end of the cell chamber from the inlet shaft, and the cooling air is heated by being used for cooling the heating element. After rising to the upper plenum part at the upper end of the cell chamber, the natural ventilation system using the draft force based on the pressure difference with the high-temperature cooling air led to the outlet shaft through the cooling air outlet, In the cooling air outlet louver provided at the cooling air outlet in the heating element storage facility that continuously takes in new cooling air and continuously cools the heating element during storage. The cooling air flow path is arranged in the vertical direction on the louver end strut, which is arranged so as to extend in the vertical direction at both ends in the width direction of the air outlet and the louver plate is attached to the inner side surface in multiple stages. And connecting a cooling air introduction line for guiding the low-temperature cooling air to one end of the cooling air flow path, and connecting the other end of the cooling air flow path to the cooling air outlet. A cooling air outlet louver for a heating element storage facility, characterized in that the louver has a configuration communicating with a downstream side of a louver installation location.   The cooling air outlet louver for a heating element storage facility according to claim 1, wherein a cooling air introduction line connected to one end of the cooling air flow path can guide cooling air having a lower temperature than the lower plenum portion of the cell chamber. .   A channel box is attached to the outer surface of the louver end column over the entire length in the vertical direction, and a cooling air flow path is provided between the louver end column and the channel box, and the louver end column is connected to the channel box. The cooling air outlet louver of the heating element storage facility according to claim 1 or 2, wherein the cooling air outlet louver of the heating element storage facility is arranged on both side walls of the cooling air outlet of the heating element storage facility.   A lower flow path forming box is provided below the lowermost louver plate inside the lower end of the louver end strut, and a cooling air flow path attached to the louver end strut is provided in the lower flow path forming box. An air inlet provided in the lower plenum part of the cell chamber of the heating element storage facility is provided in the air inlet provided in the upstream side face part in the cooling air flow direction of the lower flow path forming box, with a lower communication port communicating with the lower end part A cooling air outlet louver for a heating element storage facility according to claim 1, wherein an upper end portion of a cooling air introduction pipe extending through the lower plenum forming plate and the upper plenum forming plate is connected.   An upper channel forming box is provided on the upper side of the uppermost louver plate inside the upper end of the louver end column, and the upper end of the cooling air channel attached to the louver end column is provided in the upper channel forming box. 5. The cooling air outlet louver for a heating element storage facility according to claim 4, wherein an upper communication port communicating with said portion is provided, and an air outlet is provided at a downstream side surface portion in the cooling air flow direction in the upper flow path forming box.

Images