JP3773749B2 - Conduit connection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a production process for producing a refractory metal such as Ti or Zr by reduction of chloride.Residual in metal after chloride reduction Mg as well as MgCl ₂ Impurities such asUsed to separateSeparationThe present invention relates to an apparatus for connecting a conduit.
[0002]
[Prior art]
For example, a crawl method is known as a method for producing sponge titanium. The manufacturing process of sponge titanium by the crawl method involves the reaction of titanium tetrachloride and metal magnesium at high temperatures, MgCl ₂ A reduction step of generating M g Cl ₂ And the unreacted metallic magnesium is heated at a high temperature while being evacuated to separate and remove from the sponge titanium.
[0003]
AndThis sponge titaniumVarious devices have been proposed in the manufacturing process. For example,Conventionally, a dedicated device is used for each process, but a technique that enables this to be performed in one device has been proposed. This deviceThe chloride of the metal to be produced is reduced with molten Mg, and the precipitated metal is further heated, and Mg and MgCl₂A reduction evaporation chamber for vaporizing and separatingSaidVaporized Mg and MgCl₂Condensing chamber for cooling and condensingThe reduction step and the evaporation step can be performed with the same device.(Japanese Patent Laid-Open No. 58-210128).
[0004]
The reduction evaporation chamber is composed of a cylinder for reducing and vaporizing and separating metal, and a furnace for heating and vaporizing and separating the metal in the cylinder. In addition, the condensation chamber includes the vaporized Mg and MgCl. ₂ Cylinder for accepting gas, and vaporized Mg and MgCl in the cylinder ₂ And a water tank for cooling and condensing. In addition, both chambers are provided with separable lids in order to maintain hermeticity.
[0005]
The reduction evaporation chamber and the condensation chamber are connected to both ends of the connecting pipe provided with heating means. The connected conduit is detachably connected.
With the above configuration, Mg and MgCl vaporized and separated in the reduction evaporation chamber ₂ Can flow in the connecting pipe without solidification and flow into the condensing chamber. In addition, since two processes can be performed simultaneously with one device, there is no need to move the cylinder from device to device, and labor and cost required for cooling, moving, disassembling and assembling the device can be reduced. Met.
[0006]
But,The connecting pipe and the fluid conduit of the device according to the above patent application are Mg flowing in the pipe.as well asMgCl₂ etcIn order to maintain the fluidity of the pipe, it is necessary to keep the tube wall at a sufficiently high temperature.The
Therefore, connection pipes and fluid conduitsEach connection endInPacking such as heat-resistant rubber sandwiched between the flange and both flangesUseFurthermore, to maintain the sealing performance of the packingIn addition, the flange part can beIt was necessary to prevent thermal degradation.
[0007]
In addition, the connecting pipe and fluid conduit according to the above patent application, Due to design constraints, equipment installation location, etc.RiffWhen the lunge diameter is reduced, the wall temperature decreases at the pipe connection, that is, in the flange area to be cooled.It was. In this place where the wall temperature is lowered, Mg and MgCl ₂ Etc. are likely to precipitate,When Mg is precipitated, Mg has a high thermal conductivity and can be easily cooled. Therefore, Mg is further precipitated on the Mg, and as a result, tube clogging is likely to occur.
[0008]
UpQuestionTo solve the problem,A pipe for transferring a high-temperature fluid that is connected to face each other;Tube until it reaches the opposite end of each tubeinternalMeans for heating the fluid at a high temperature at which the fluid can maintain fluidityAndCoupling means for airtightly connecting both tubesWhen,A connection technique for a high-temperature fluid conduit having the above has been proposed (see Japanese Patent Application Laid-Open No. 59-80593). In this technique, the heating of the tube portion to be connected is substantially achieved by, for example, doubling the tube wall and installing a heating region between the inner tube and the outer tube by oil or gas combustion or electric heating. Heating is performed up to the region reaching the connection end.for that reasonIn consideration of expansion during heating, the connection ends are arranged at a small interval as long as both ends do not contact at the operating temperature.
[0009]
[Problems to be solved by the invention]
However, when using the above technology, It is difficult to connect the high-temperature fluid conduit to the container due to subtle displacement of the container to be connectedThere was the inconvenience of becoming.Moreover, problems such as thermal expansion of the connecting pipe, deformation of the pipe due to shrinkage during cooling, and Mg precipitation at the connecting end due to flange cooling provided to prevent thermal deterioration of the packing have not been sufficiently solved. . Further, the connection pipe once used in the evaporative separation process is broken and discarded after being separated from the reduction evaporation chamber and the condensation chamber, so that high cost is a problem. Furthermore, in the double tube structure, heating is performed between the outer tube and the inner tube by an electric heater or the like. At this time, there is a disadvantage that the inner tube is likely to be deformed or the inner and outer tubes are damaged due to a pressure difference between the inner and outer sides.there were.
[0010]
this is,Inner pipe insideTheFor example, in order to maintain at 750 ° C. or higher, stress distortion due to thermal expansion occurs at the end of the steel pipe.There is alsoWhen pipe elongation occurs as the temperature inside the pipe rises,The tube itselfSince there is no structure to absorb the elongation, pipe breakage occursThat's it.
[0011]
thisIt is impossible to reuse the pipe due to pipe breakage.BecauseWhen discarding occurs frequently, a problem of high cost arises.Also,Even if it does not break, deformation due to expansion and contraction of the tube occurs, and connection to the conduit becomes difficult at the time of reuse. Therefore, the number of times that the connection tube can be reused is reduced.further,It is said that oxygen and nitrogen enter the pipe due to breakage and the quality of the product Ti deteriorates.There was a problem.
[0012]
An object of the present invention is to provide a conduit connection device that prevents damage to a pipe by relaxing stress deformation due to thermal expansion of the pipe and deformation of the pipe due to a pressure difference, and allows the pipe to be reused many times. is there.
[0013]
The purpose of the present invention is to ease stress installation due to thermal expansion of the tube and prevent deformation of the tube, making it easy to adjust the position and inclination of the flange connection between the conduit and connecting tube when reusing the tube. Is to provide a simple conduit connection device.
[0014]
Another object of the present invention is to relieve stress strain caused by thermal expansion of the tube and prevent tube deformation.GuIt is an object of the present invention to provide a conduit connection device that makes it easy to install and remove a connection pipe without destruction, and that allows the gasket to be reused many times by preventing thermal deterioration of the gasket due to heat. .
[0015]
A further object of the present invention is to prevent the intrusion of oxygen and nitrogen into the system by a double pipe and an airtight structure even when a pipe breakage occurs.Product TiIt is another object of the present invention to provide a conduit connection device that can supply the above.
[0016]
[Means for Solving the Problems]
  According to the conduit connection device according to claim 1 of the present invention,Used in the production of sponge titaniumA conduit provided on the reaction vessel side;Mg and MgCl separated in the reaction vessel ₂ PrecipitateIn a conduit connection device for connecting a conduit provided on the collection vessel side, a reaction vessel side conduit, and a collection vessel side conduit with a connection tube, the connection tube has a double structure consisting of an inner tube and an outer tube. A heating part and a heat insulating part configured between the inner pipe and the outer pipe, flanges formed on both ends of the connecting pipe, a bellows arranged on the inner side of the connecting pipe from the flange, and a flange And a conduit provided on the reaction vessel side and the collection vessel side is configured as a double structure including an inner tube and an outer tube at least on the connection tube side while communicating with the respective containers.The conduit connecting device is provided with a vacuum suction port for decompressing the inside of the double-structured tube, and the end portion constituting the connecting portion with the conduit of the connecting tube is covered with a double-structured bellows.Is solved.
[0017]
  It is preferable that a pressure gauge is connected between the bellows having the double structure.
[0018]
  Thus, vaporized Mg and Mgcl₂For pipes through which high-temperature fluid such asA bellows is provided.Stress strain due to the thermal expansion of the tube is absorbed, preventing breakage and deformation of the tube, which allows the tube to be reused multiple times. In addition, stress distortion due to thermal expansion of the pipe is relieved and deformation of the pipe is prevented, so that the position and inclination of the flange connection between the conduit and the connecting pipe can be easily adjusted when reused. It becomes easy. In addition, connection pipes can be installed and removed without destruction.The ThisAs described above, according to the configuration of the present invention, the number of times of reuse of the connecting pipe and the gasket is increased, and the cost can be reduced.
[0019]
Also,According to the conduit connection device of the present invention, as described above.Tube thermal expansion and pressure difference inside and outside the tubeButRelaxationIsPrevents tube breakage and deformationAlthough configured to,For exampleEven when the inner and outer pipes are damaged,At least the connecting pipeAs double pipeConstructed, and the bellows covering the outer pipe separation part has a double structure, and furthermore, the airtight connection of the conduit, connection pipe, and container is maintained.Invasion of oxygen and nitrogen from the atmosphere into the reaction systemButPreventionIsSupply high-quality TiButPossibleInThe
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The members, arrangements, and the like described below are not intended to limit the present invention and can be variously modified within the scope of the gist of the present invention.
[0021]
1 to 4 show an embodiment of the present invention. FIG. 1 is a schematic view of a conduit connection device of a vacuum evaporation separation apparatus, FIG. 2 is a schematic view of a connection pipe of the conduit connection device, and FIG. FIG. 4 is an overall configuration diagram of the vacuum evaporation separation apparatus.
[0022]
In this example, Ti is replaced with TiCl.₄Sponge titanium produced in the process for producing Mg by reductionContained inMg and MgCl₂Evaporate and separateapparatusIs described. Needless to say, the present invention is applied to a conduit connection device corresponding to a high-temperature fluid exhibiting a high melting point in the purification of Zr or the like other than Ti.
[0023]
As shown in FIG. 4, the vacuum evaporation separation apparatus used in the present invention isMg and MgCl to be evaporated₂Sponge titanium mixed withHollow cylindricalReaction vessel 52 and reaction vessel52HeatingBy, Vaporization, separationWasMg and MgCl₂Cooling, condensing, solidifyingHollow cylindricalA collection container 53;Connect both containers 52 and 53Consists of conduit connection pipe device 51Has beenTheIn this exampleReaction vessel 52,Collection container53 isAt both ends of the conduit connection device 51Like hanging downIt is juxtaposed in the state.
[0024]
Also, in this exampleThe conduit connecting device 51 includes conduit portions 1a and 1b and a connecting pipe 2.The conduit portions 1a and 1b formed in a hollow cylindrical shape are connected to and connected to upper lids 54 and 55 provided on the upper portions of both containers 52 and 53, respectively. By connecting the conduit portions 1a, 1b and the upper lids 54, 55 of the containers 52, 53 in this way, the containers 52, 53 are fixedly supported by the conduit portions 1a, 1b.
[0025]
Further, a pipe is extended above the conduit portions 1a and 1b.It is fixedly supported on a pedestal, wall, etc. installed outside the vacuum evaporative separator.For this reason, both containers 52 and 53 can be fixedly supported more firmly.
[0026]
furtherAlso, Conduit parts 1a, 1bA connecting pipe 2 communicating with the conduit portions 1a and 1b is provided between the two. In the connecting pipe 2, the conduit portions 1a and 1b are suspended from the upper lids 54 and 55. It is provided at a substantially intermediate position extending in the straight direction.
[0027]
Of this exampleThe reaction vessel 52 is connected via an upper lid 54.An electric heating furnace is provided on the outer periphery of the reaction vessel 52 supported by the conduit portion 1a. The reaction vessel 52 isAn electric furnace top seal provided at the top of the electric furnace;Provided at the top of the reaction vessel 52By performing horizontal alignment with the upper lid 54, the electric furnace is airtight.ContainmentIs done.Also,The reaction vessel 52 is suspended in the electric furnace so as not to directly touch the electric heating part in the electric furnace.RetentionHas been.
[0028]
further,Position slightly above the bottom of the reaction vessel 52Is provided with an injection pipe extending from the side surface of the reaction vessel 52 toward the upper outside and communicating to the outside of the electric furnace. This injection tubeUsed for injection of reactants.
[0029]
The recovery container 53 of this example has the same configuration as the reaction container 52, and the recovery container 53 is supported by the conduit portion 1 b via the upper lid 55.Collection container 53There is a cooling furnace on the outer periphery ofCooling furnace upper seal part provided at the upper part of the cooling furnace and the upper part of the recovery container 53Provided inUpper lid 55WithBy performing horizontal alignment,The collection container 53 is housed in a cooling furnace in an airtight manner. In this example, the recovery device 53 is cooled by water cooling or the like.
[0030]
FurthermoreIn a position slightly above the bottom of the collection container 53,An injection pipe extending from the side surface of the recovery container 53 toward the upper outside and communicating to the outside of the cooling furnace is provided.thisInjection tubeIs for use in injecting reactants.
[0031]
The cylindrical collection container 53 is not only used as a collection container.Vessels on either side, such as the evaporative separation side, the side for collecting separated substances, and the reduction reaction side for carrying out the reduction reaction in a separate processEven asDesigned and manufactured so that it can be installed.
Therefore, it is provided in the collection container 53.Injection tubeMay not need to be used in the recovery process,This collection container 53 isReduction reaction processAs containerWhen used, from this injection tube, for example, TiCl₄Can be injected.
[0032]
In this exampleMaterial of reaction vessel 52 and recovery vessel 53In,Stainless steelIs used,The type of stainless steel can be selected as appropriate.Also,The evaporative separation process described here has one process per process.Reaction container 52 and recovery container 52After batch processing usingToThe vessel is destroyed and destroyed. In addition, reaction container52 and collection container 53Is produced on a separate production lineBe done.
[0033]
hereFrom the sponge titanium filled in the reaction vessel 52, Mg and MgCl₂Evaporative separationHow to do will be described.
First, vacuum separatorThe inside pressure was reduced and 1.3 × 10^-2A vacuum state of about Pa,In an electric furnace provided on the outer periphery of the reaction vessel 52Reaction vessel52The temperature inside is heated to 950 ° C.
[0034]
The reaction vessel 52 was vaporized by being heated by an electric furnace provided on the outer periphery of the reaction vessel 52.Mg and MgCl₂Flows through the conduit connection device 51 in a hot fluid state,Via the conduit connection device 51, Collection container 53InsideIntroduction toBe done.
[0035]
Mg and MgCl flowing into the collection container 53 ₂ Is a cooling furnace provided on the outer periphery of the recovery container 53, and the outer peripheral surface of the recovery container 53 is cooled by water cooling in the recovery container 53.It is deposited.
[0036]
In the collection container 53, Mg and MgCl ₂ Is deposited,The substance deposited in the collection container 53 is taken out. When removing the deposited material,The conduit portions 1a and 1b are removed from the upper lids 54 and 55 of the reaction vessel 52 and the collection vessel 53, respectively. That is, the conduit connection device 51 is removed from both the containers 52 and 53. Then, the reaction container 52 and the recovery container 53 are destroyed, and the deposited substance is taken out from the recovery container 53.The conduit connection device 51 removed here is reused in the next step. Conventionally, the number of times of use per conduit connecting device was about 30 times, but in the case of the present invention, it has been confirmed that it can be reused up to about 100 times.
[0037]
Next, the conduit connecting device 51 is shown in FIG.InI will explain more.The conduit portions 1a and 1b and the connecting pipe 2 constituting the conduit connecting device 51 are heated and vaporized in the reaction vessel 52.Mg and MgCl₂Has a structure that can absorb the thermal expansion of the tube body due to heating.EssentialHaving the necessary strength, being able to make an airtight connection that does not allow the atmospheric atmosphere to contaminate the product Ti, and without being affected by the displacement of the conduit portions 1a and 1b.Both containers 52 and 53 and conduit portions 1a and 1bCan be easily connectedIt is necessary to satisfy each condition such as being.
[0038]
Reaction vessel 52 and collection vessel 53Conduit on top lids 54 and 55 at the topPart1a, 1bCommunicateConnected and further conduitPartThe connecting pipe 2 is coupled at a position between 1a and 1b. Connection pipe 2Both ends are connected to the conduit parts 1a and 1bConcatenated,For conduit parts 1a and 1bExtend horizontally.Of this exampleconduitPart1a, 1b and the connecting pipe 2 have a double pipe structure,The material isStainless steelIs used. In this exampleUsing SUS316TheHowever, the type of stainless steel is selected as appropriateIs possible.
[0039]
Conduit section1a, 1b and the connecting pipe 2 have a double structure comprising inner pipes 3a, 3b, 9 and outer pipes 4a, 4b, 8, respectively. thisThe outer pipes 4a, 4b, 8 and the inner pipes 3a, 3b, 9 are formed so as to be separable from each other, and the cylindrical outer pipes 4a, 4b, 8 are provided as the outermost circumferential part in the pipe 51. The cylindrical inner tubes 3a, 3b, and 9 are provided inside the outer tube.
[0040]
Further, a sufficient gap is provided between the outer tubes 4a, 4b, 8 and the inner tubes 3a, 3b, 9 for providing the heat insulating materials 7a, 7b, 12 and the electric heaters 6a, 6b, 11. The inner pipes 3a, 3b, and 9 are provided with electric heaters 6a, 6b, and 11 on the outer peripheral surface along the inner pipes 3a, 3b, and 9, and further, the heat insulating materials 7a, 7b, and 12 are provided with the electric heater 6a. , 6b, 11 are covered. At this time, the outer pipe inner peripheral surface and the heat insulating material outer peripheral surface are installed so as not to contact each other.
[0041]
In the conduit parts 1a and 1b and the connecting pipe 2 configured as described above, they are heated and vaporized.Mg andMgCl ₂ ButThe inner wall temperature of the tube is 750 ° C so that it does not condense and stick in the tube.degreeIt is desirable to maintain.Also,By setting the temperature inside the outer tubes 4a, 4b, 8 to 300 ° C. or lower, the conduit portions 1a, 1b,Connection pipeEnsuring strength of 2 with outer tubeIs possible.
[0042]
Further, the conduit connection device 51 is provided with one vacuum suction port 60 for reducing the pressure together with the reaction vessel 52. The vacuum inlet 60 is provided with fin-shaped heat radiation fins 60a for air cooling. By using this vacuum drawing port 60, the inside of the double pipe of the conduit connecting device 51 is also decompressed in the same manner as the reaction vessel 52, thereby preventing the hot inner pipe from being deformed by the pressure difference between the inside and outside of the pipe.
[0043]
Furthermore, the conduit connection device 51 includes:Four lead ports 59 for electric heaters 6a, 6b, and 11 and two temperature measuring ports 61 for inner tube temperature are attached to the outer tube wall for inner tube temperature control, and are connected by means such as welding. Is done.
[0044]
As shown in FIG.The lead port 59 of the electric heater 11 is connected to the connecting pipe 2.Symmetrical position in the pipe cross section2 in the longitudinal direction of the connecting pipe 2 as shown in FIG. 2, two places in the left-right symmetrical position with respect to the center position of the length of the pipe, that is, a total of four places are installed in the connecting pipe 2. ing.The electric heater 11 is covered with a heat insulating material 12 on the outside.As shown in FIG.Symmetrically on both sides of connecting pipe 22 places installedThe
[0045]
With the above configurationAs with the reaction system, reduce the pressure inside the double tube.Can be doneTherefore, the high temperature inner pipe is prevented from being deformed by the pressure difference between the inside and outside of the pipe.It becomes possible.
Also,By making the conduit connection device 51 airtight, it is possible to prevent oxygen and nitrogen from entering the reaction system due to tube damage or the like, and to prevent deterioration of the quality of the product Ti due to oxidation and nitridation of Ti.Further, the inside of the inner tube is sealed by inserting a gasket in the gap between the connecting portion of the conduit and the connecting tube, thereby maintaining an airtight structure.
[0046]
Next, the connecting pipe 2 will be described in more detail with reference to FIGS.
Flanges 13 a, 13 b, 14 a, 14 b are disposed at the connecting portions at both ends of the conduit portion 1 a and the connecting pipe 2. The flanges 14a and 14b have a donut disk shape, and are provided at both ends of the connecting pipe 2 perpendicular to the pipe direction.
[0047]
Moreover, the bellows 15 is installed in the double structure so that the outer periphery of the outer tube | pipe 8 may be covered in the connection part with the conduit | pipe parts 1a and 1b in the both ends of the connecting pipe 2. FIG. In addition, although the material of the bellows 15 in this example is stainless steel, the kind can be selected suitably.
[0048]
The flanges 14 a and 14 b are joined to the end portion of the bellows 15 via the flange-bellows joint portion 57. In this example, this joining is performed by a method such as welding, but this is not limited. Flange 14a, 14b is arrange | positioned so that the inner periphery may not contact an outer pipe surrounding wall part.
[0049]
Further, rubber gaskets 23 and 24 having elasticity are arranged concentrically on the surface of the flange 14a. The rubber gaskets 23 and 24 are doubled so that the rubber gasket 23 is located on the outside and the rubber gasket 24 is located on the inside.
[0050]
On the other hand, the side of the bellows 15 that is not on the flange connecting portion side, that is, the other end side, is connected to a donut disk-like support board 58 that is in contact with the outer tube wall perpendicularly. 3 pointsTie rod supportIs provided. Furthermore, at the outer periphery of the flange 14a, three points are equally spaced.Tie rod supportIs provided. Also,In case the bellows breaks,Bellows 15 has a double structureYes.In this manner, the bellows 15 is installed between the flange 14a and the donut disk-shaped support plate 58 in contact with the outer tube wall.
[0051]
FLunge 14a,14bProvided on the outer peripheryTie rod supportAnd a donut disk-shaped support plate 58 in contact with the outer tube wall.In the tie rod support,Tie rod 19IsAlmost parallel to the pipe directionInPenetrationArranged. On the support plate 58 side, the end of the tie rod 19 isFixed by boltingIs done. Also, the end of the tie rod 19 on the flange 14a connection sideBellows depending on bolt tightening15The pipe position, horizontal position, etc. are adjusted by the expansion and contraction of the flange 14a,14b is rubberThrough gaskets 23 and 24AndFlange 13a, 13b andCrimped together.
[0052]
Also, the flange 14a, 14b on the side of the bellows 15gasket23For the purpose of protecting from high heat, De-Nut diskWater cooling jacket 21 is rubbergasket23It is installed in the width. Flange 13a, 13bSameIn, Connection sideOn the opposite side of the-Nut diskWater cooling jacket 21,Rubbergasket24Installed in widthIsing.
[0053]
Thus, the flange 14a,14bIsLocated on the conduit section 1a, 1b sideFlange 13a, 13bAnd rubber gaskets 23 and 24Connected. At this time, the flanges 14a and 14b and the flanges 13a and 13b areTie rod19Flange connection through which20It is connected airtight by bolting.In additionHere, the bellows 15 is for adjusting the difference in position and inclination of the flanges 14a and 13a.
[0054]
Next, the structure of the inner tubes 3a, 3b, 9 and the outer tubes 4a, 4b, 8 will be described. In this example,The inner tubes 3a, 3b, and 9 are heated to 750 ° C., and the outer tubes 4a, 4b, and 8 are held at 300 ° C. or less, so that there is a difference in thermal expansion of the tubesIt will be. At this time, in order to avoid deformation of the tube,Conduit partTheRigid structureThenStress due to the difference in thermal expansion is concentrated on the end portion, and the durability of the tube is deteriorated due to deformation of the end portion. Therefore, in the present invention, the outer tube expands and contracts in accordance with the thermal expansion of the inner tube.Sea urchin outsidetube4a, 4b, and 8 respectively cover the outer tube separating portion 56 and the outside of the outer tube separating portion 56.Outer tube bellows 5a, 5b, 10 are provided.
[0055]
The outer tube separation portion 56 is provided so as not to prevent expansion and contraction of the outer tubes 4a, 4b, and 8.Outer tube separator 56IsOuter tube4a, 4b, 8Is provided with a width of about 30 mm along the outer periphery ofAnd outer pipeIt contacted the inside of the outer tube so as to close the opening area of the separation part 56Reed mouth59 is provided.Reed mouth59 is provided so that the atmosphere can be directly4a, 4b, 8To break intoprevent.
[0056]
Also outer tubeEven when the separating part 56 expands and expands,Reed mouthInvasion of air atmosphere by giving 59 width marginIs prevented.
further,Due to the thermal expansion of the outer tubes 4a, 4b, 8, thisOuter pipeSeparation part56ExpandedAlso whenThe outer tube bellows 5a, 5b, 10 absorb the elongation of the tube resulting from the expansion.
[0057]
furtherAlso, Inner pipe3a, 3b, 9When connecting the connecting pipe 2 in order not to disturb the thermal expansion of,ConnectionEnd of pipeA position where the end 22 does not contact the flange 13a;That isConnect flange 14aEnd of pipeAbout 1 cm from end 22 From flange 13a sideTo be located inTie rod 19soPositioningI do.At this time, the flange 14a, 14bIs the outer tube8Because it is not in contact with8There is a slight gap between the bellows 15 andVaporizedMg and MgCl₂In order to prevent intrusion, solidification, and sticking of the bellows portion into the gap 181a, 1bAnd connection pipe2Connecting partBetweenIt has elasticity to the slight gap ofDonut disk shapedGlass fiber insulation gasket 17DressWear and pinch to maintain airtightness.
[0058]
conduit1a, 1bAnd connection pipe2Inner pipe exposed to high temperature after connecting3a, 3b, 9Outer tube coming from thermal expansion of4a, 4b, 8Is absorbed by bellows 15ThisThe furtherOf this exampleA stand installed outside the vacuum evaporative separatoretcThe weight of the connecting pipe 2 is supported by supporting a part of the lower part of the connecting pipe 2 by the air cylinder 16 installed on the tie rod 19.AndLoosen the nut and tighten the inner pipe3a, 3b, 9Outer tube with thermal expansion of4a, 4b, 8Is absorbed by the bellows 15.
[0059]
Also, the bellows 15 bellows 15 expands and contracts in the tube direction, and the outer tube8 perimeterIn addition to the function of efficiently absorbing the elongation of the tube, if the inner bellows 15 existing on the outer tube 8 side is damaged due to stress strain or the like, the other bellows on the outer side15Therefore, the airtight structure is maintained. Outer tube 8 and bellows15The bellows internal pressure gauge 62 has a double structure from the side of the support panel 58 that supports the connection.15Inserted and connected between the bellows15If damage occurs to thisBellows internal pressure gauge 62Detects pressure difference and bellows15Can be detected.
[0060]
On the other hand, in the vicinity of the glass fiber insulation gasket 17 where the heating from the heater is blocked, Mg and MgCl₂However, it does not interfere with the separation operation. Therefore, the problem of tube clogging does not occur.
[0061]
In the vacuum evaporation separation apparatus of this example, the conduit connection device51To maintain airtightness,Of each component constituting the conduit connecting device 51Among them, welding means and bolt and nut tighteningJoined byAt each location, use a packing ring, O-ring, etc.HoldMechanical joining means are used.
[0062]
As described above, the present invention naturally includes various embodiments not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.
[0063]
【The invention's effect】
  As described above, according to the conduit connection device of the present invention, vaporized Mg or MgCl₂Bellows on pipes through which high-temperature fluid such asIsProvided, BeLowToAs a result, the thermal expansion of the tube is absorbed, stress distortion due to the thermal expansion is prevented, and deformation and breakage of the tube can be prevented.
[0064]
In this way, deformation of the tube is prevented,When the tube is reused, reconnection becomes easy. Furthermore, in the connection between the reaction container and the recovery container, the position and inclination of the conduit and the connection pipe can be adjusted, and the connection between the reaction container and the recovery container becomes easy.
[0065]
  Further, according to the present invention, damage and deformation resulting from the thermal expansion of the tube due to heating can be prevented, so that the connection tube can be installed and removed nondestructively..
[0066]
As described above, according to the conduit connection device of the present invention, the number of times of reuse of the connection pipe can be dramatically increased.
[0067]
Also according to the present inventionThe pipe and the connecting pipe are configured as a double pipe, and the bellows covering the outer pipe separating part has a double structure, and the airtight connection of the pipe, the connecting pipe, and the container is maintained. Even if it is damaged,Metal in reaction systemIs not exposed to the open air,It is possible to prevent metal contamination with oxygen and nitrogen and provide high-quality metal products.
[Brief description of the drawings]
FIG. 1 is a schematic view of a conduit connection device of a vacuum evaporation separation device.
FIG. 2 is a schematic view of a connecting pipe of the conduit connecting device.
FIG. 3 is a schematic cross-sectional view taken along the line AA of the connection pipe shown in FIG.
FIG. 4 is an overall configuration diagram of a vacuum evaporation separation device.
[Explanation of symbols]
1aconduit
1bconduit
2 Connection pipe
3a Inner pipe
3b Inner pipe
4a Outer pipe
4b Outer pipe
5a Outer tube bellows
5b Outer tube bellows
6aElectric heatheater
6bElectric heatheater
7 Insulation
7a Thermal insulation
7b Insulation
8 outer pipe
9 Inner pipe
10 Outer tube bellows
11 Electric heater
12 Insulation
13a Flange
13b Flange
14a Flange
14b flange
15 Bellows
16 Air cylinder
17 Glass fiber insulation gasket
18 Bellows gap
19 Tie Rod
20 volts
21 Water-cooled jacket
22 Connecting pipe end
23 Rubber gasket
24 Rubber gasket
51 Conduit connection device
52Reaction vessel
53Collection container
54 Upper lid
55 Upper lid
56 Outer tube separation part
57 Flange-bellows joint
58 Support plate
59Reed mouth
60 Vacuum outlet
60a Heat radiation fin
61 Temperature measuring port
62 Bellows internal pressure gauge

Claims (2)

A conduit provided on the reaction vessel side used for the production of sponge titanium, a conduit provided on the recovery vessel side for depositing Mg and MgCl ₂ separated in the reaction vessel, a conduit on the reaction vessel side and a recovery vessel side In a conduit connecting device for connecting a conduit with a connecting pipe,
The connecting pipe is configured as a double structure including an inner pipe and an outer pipe, a heating part and a heat insulating part disposed between the inner pipe and the outer pipe, and flanges formed on both ends of the connecting pipe And a bellows disposed inside the connecting pipe from the flange, and a flange connecting portion,
Conduit wherein provided on the reaction vessel side and the collecting container side, together with the communication with the each container is constructed as a double structure consisting of at least the connection pipe side inner tube and the outer tube, the two to the conduit connecting device A conduit connection device, characterized in that a vacuum suction port is provided for decompressing the inside of a heavy tube, and an end portion constituting a connecting portion with the conduit of the connection tube is covered with a double bellows . The conduit connection device according to claim 1 , wherein a pressure gauge is connected between the double bellows .

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