CN109928613A - The cooling device used in the wire-drawing frame of optical fiber - Google Patents
The cooling device used in the wire-drawing frame of optical fiber Download PDFInfo
- Publication number
- CN109928613A CN109928613A CN201811533467.7A CN201811533467A CN109928613A CN 109928613 A CN109928613 A CN 109928613A CN 201811533467 A CN201811533467 A CN 201811533467A CN 109928613 A CN109928613 A CN 109928613A
- Authority
- CN
- China
- Prior art keywords
- interconnecting piece
- outside
- optical fiber
- cooling tube
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Manufacture, Treatment Of Glass Fibers (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The present invention, which provides, does not apply buckling stress to the multistage cooling tube of connection, can also ensure that the cooling device used in the wire-drawing frame of optical fiber of air-tightness in the case where use during length.Cooling device includes multiple cooling tubes of split construction, they are arranged in the traveling axis direction of optical fiber；And the interconnecting piece of split construction, adjacent cooling tube in multiple cooling tubes is attached in traveling axis direction by it each other, interconnecting piece is the inside interconnecting piece (21a for the split construction being arranged in the end of the cooling tube of a side of adjacent cooling tube, outside interconnecting piece (the 31a for the split construction that the end of cooling tube 21b) and in another party is arranged, 31b) in the construction chimeric with the orthogonal direction of traveling axis direction, there is the first airtight member (51a between inside interconnecting piece and outside interconnecting piece, 51b), first airtight member (51a, it 51b) is pressed and deforms in the direction orthogonal with traveling axis direction, thus it will be set as airtight between inside interconnecting piece and outside interconnecting piece.
Description
Technical field
The present invention relates to for carrying out cooling cooling device to optical fiber.
Background technique
Describe following the description in the optical fiber cooling apparatus of patent document 1, that is, have for by multistage cooling cylinder along light
Fibre carries out connection unit that is mobile and reciprocally linking them.Above-mentioned cooling cylinder is by respectively can with the relative direction of optical fiber
It is movably divided into multiple multiple cutting plates to constitute, also there is opening/closing unit, which is used for these multiple segmentations
Piece is driven in the relative direction with optical fiber.
Following the description is described in the wire-drawing frame of the optical fiber with cooling device of patent document 2, that is, multiple coolings
Adjacent 2 cooling cylinder in cylinder is airtightly linked by linking cylinder.
Patent document 1: Japanese Unexamined Patent Publication 10-259036 bulletin
Patent document 2: Japanese Unexamined Patent Publication 5-186238 bulletin
Such as shown in Patent Documents 1 and 2, the cooling device used in the wire-drawing frame of optical fiber, in order to improve cooling effect
Multistage cooling tube (cooling cylinder) is linked sometimes and is constituted, so that cooling range will be carried out in the axis of travel side of optical fiber by rate
To lengthening.In order to ensure the air-tightness of the mutual linking portion of cooling tube, from the up and down direction (row of optical fiber of the cooling tube of multistage
Into axis direction) pass through cylinder etc. for cooling tube Continued depression, therefore buckling stress is applied to the multistage cooling tube of connection sometimes.Cause
This, in the case where cooling device is used during length, cooling tube is bent and dividing construction can not be closed completely, it is possible to cannot be true
Protect the air-tightness in cooling tube.
Summary of the invention
The object of the present invention is to provide a kind of cooling devices used in the wire-drawing frame of optical fiber, not to connection
Multistage cooling tube apply buckling stress, can also ensure that air-tightness in the case where use during length.
The cooling device used in the wire-drawing frame of optical fiber involved in one embodiment of the present invention, the wire drawing of the optical fiber
Device carries out wire drawing with base material by heating furnace heating optical fiber,
The cooling device includes
Multiple cooling tubes of split construction, they are arranged in the traveling axis direction of the optical fiber；
And
The interconnecting piece of split construction, by the adjacent cooling tube in the multiple cooling tube each other in the axis of travel side
To being attached,
The interconnecting piece is connected on the inside of the split construction that the end of the cooling tube of a side of adjacent cooling tube is arranged
The outside interconnecting piece for the split construction that the end of socket part and the cooling tube in another party is arranged is orthogonal with the traveling axis direction
The chimeric construction in direction,
There is the first airtight member between the inside interconnecting piece and the outside interconnecting piece,
First airtight member is deformed and being pressed in the direction orthogonal with the traveling axis direction, thus by institute
It states and is set as airtight between inside interconnecting piece and the outside interconnecting piece.
The effect of invention
According to foregoing invention in the wire-drawing frame of optical fiber used in cooling device, the multistage cooling tube of connection is not applied
Pressurize transverse stress, can also ensure that air-tightness in the case where use during length.
Detailed description of the invention
Fig. 1 is the outline structure for indicating the cooling device used in the wire-drawing frame of optical fiber involved in present embodiment
Partial sectional view.
Fig. 2 is the exploded perspective view for indicating the interconnecting piece of cooling device of Fig. 1.
Fig. 3 is the oblique view of a side of the inside interconnecting piece of the split construction in the cooling device for indicate Fig. 1.
Fig. 4 is the oblique view of a side of the outside interconnecting piece of the split construction in the cooling device for indicate Fig. 1.
Fig. 5 is the top view of the inside interconnecting piece in the cooling device of Fig. 1.
Fig. 6 is the top view of the outside interconnecting piece in the cooling device of Fig. 1.
Fig. 7 is the section view of the abutting direction of the interconnecting piece of the split construction in the variation of the cooling device of present embodiment
Figure.
The explanation of label
1: cooling device
10 (10A~10C): cooling tube
13: optical fibre channel
14a: gas supply port
14b: gas discharge outlet
20 (20A, 20B): interconnecting piece
21 (21a, 21b): inside interconnecting piece
25a: upper abutment portion
26a: lower abutment portion
28,43: insertion hole
31 (31a, 31b): outside interconnecting piece
32a, 32b: the first outside interconnecting piece
33a, 33b: the second outside interconnecting piece
34a, 34b: recess portion
34a1,34b1: underside recess
34a2,34b2: upper side pocket
39a, 39b: lower abutment portion
40a, 40b: upper abutment portion
51a, 51b: the first sealing material (example of the first airtight member)
52a, 52b: the second sealing material (example of the second airtight member)
53a, 53b: third sealing material (example of third airtight member)
54a, 54b: the 4th sealing material (example of third airtight member)
G1: glass fibre
Specific embodiment
(explanations of embodiments of the present invention)
Firstly, enumerating embodiments of the present invention and being illustrated.
The cooling device used in the wire-drawing frame of optical fiber involved in one embodiment of the present invention,
(1) a kind of cooling device used in the wire-drawing frame of optical fiber, the wire-drawing frame of the optical fiber are added by heating furnace
Hot base material for optical fiber and carry out wire drawing,
The cooling device includes
Multiple cooling tubes of split construction, they are arranged in the traveling axis direction of the optical fiber；And
The interconnecting piece of split construction, by the adjacent cooling tube in the multiple cooling tube each other in the axis of travel side
To being attached,
The interconnecting piece is connected on the inside of the split construction that the end of the cooling tube of a side of adjacent cooling tube is arranged
The outside interconnecting piece for the split construction that the end of socket part and the cooling tube in another party is arranged is orthogonal with the traveling axis direction
The chimeric construction in direction,
There is the first airtight member between the inside interconnecting piece and the outside interconnecting piece,
First airtight member is pressed in the direction orthogonal with the traveling axis direction and is deformed, thus in will be described
It is set as airtight between side interconnecting piece and the outside interconnecting piece.
According to above structure, the first airtight member is pressed in the orthogonal direction of the traveling axis direction with optical fiber, thus, it is possible to
Enough ensure the air-tightness of the mutual interconnecting piece of cooling tube.Without in order to ensure the airtight of the mutual interconnecting piece of cooling tube and from optical fiber
Traveling axis direction (up and down direction) by cylinder etc. by cooling tube Continued depression, therefore the multistage cooling tube of connection will not be applied
Pressurize transverse stress, can also ensure that air-tightness in the case where use during length.
(2) can be has the second airtight member between the inside interconnecting piece of split construction,
Second airtight member is pressed in the direction orthogonal with the traveling axis direction and is deformed, thus in will be described
Side interconnecting piece is set as airtight each other.
According to above structure, when inside interconnecting piece to be closed each other, the second airtight member is pressed and deforms, thus, it is possible to
Enough air-tightness for more reliably ensuring the mutual interconnecting piece of cooling tube.
(3) can be has third airtight member between the outside interconnecting piece of split construction,
The third airtight member is pressed in the direction orthogonal with the traveling axis direction and is deformed, thus by described outer
Side interconnecting piece is set as airtight each other.
According to above structure, when outside interconnecting piece to be closed each other, third airtight member is pressed and deforms, thus, it is possible to
Enough air-tightness for more reliably ensuring the mutual interconnecting piece of cooling tube.
(4) the inside interconnecting piece and the outside interconnecting piece be can be, the axis of travel side is respectively provided with and is orthogonal to
To the parallel opposite face in direction,
The inside interconnecting piece and the outside interconnecting piece of one side of split construction, the first phase in the opposite face
It is opposite at opposite,
The inside interconnecting piece and the outside interconnecting piece of another party of split construction, second in the opposite face
It is opposite at opposite face,
First opposite face and second opposite face are wrong in traveling axis direction in the state of by split structural closure
It opens.
It is parallel with traveling axial direction is orthogonal in the state of by split structural closure according to above structure
First opposite face and the second opposite face are staggered in traveling axis direction, therefore generate platform between the first opposite face and the second opposite face
Rank and opposite face is non-coplanar.As noted previously, as opposite face is non-coplanar, therefore even if a side of adjacent cooling tube cooling tube
The gap of channel-shaped is minutely separated out and become with the distance of the cooling tube of another party, since the gap of channel-shaped is not linearly phase
Even, therefore the gas in cooling tube is also not easy to leak.
(5) cooling device can have for make in the cooling tube helium atmosphere flow and to the optical fiber into
The supply mouth and outlet of row cooling, described helium atmosphere.
According to above structure, it is ensured that the air-tightness of the mutual coupling part of cooling tube is consequently for letting out for cooling gas
Leakage is few, therefore even if is also able to suppress the rising of cost using the helium atmosphere for comparing high price.
(6) section shape of the inside interconnecting piece and the chimeric surface in the outside interconnecting piece can be whole interior
Angle is less than the shape of the hexagon of 180 degree.
According to above structure, the section shape of inside interconnecting piece and outside interconnecting piece is respectively trapezoidal shape, inside connection
The section shape of the chimeric surface of interconnecting piece entirety after portion and outside interconnecting piece are chimeric becomes the shape of hexagon.Make as a result,
When inside interconnecting piece is chimeric with outside interconnecting piece, from the inclined surface of inside interconnecting piece apply the power vertical with chimeric direction and with it is embedding
Close the resultant force of the parallel power in direction.By the resultant force, inside interconnecting piece is all carried out in the side to connect with the first airtight member
Contiguity can be improved the air-tightness between inside interconnecting piece and outside interconnecting piece.
(detailed contents of embodiments of the present invention)
In the following, referring to attached drawing, to the cooling used in the wire-drawing frame of optical fiber involved in embodiments of the present invention
The concrete example of device is illustrated.
In addition, the present invention is not limited to these illustrations, but it is shown in the claims, comprising with claims etc.
Whole changes in same content and range.
Fig. 1 is the figure for indicating an example of the cooling device used in the wire-drawing frame of optical fiber.As shown in Figure 1, cold
But device 1 is configured at the downstream side (being downside in Fig. 1) to the optical fiber base material G heating furnace 100 heated.Cooling device 1 is
For forcibly being carried out to the glass fibre G1 for being heated in heating furnace 100 and being stretched downwards from optical fiber base material G
Cooling device.
Heating furnace 100 has heater 101, which is configured to surround optical fiber base material G.In heating furnace 100
The optical fiber base material G of setting, lower end side are heated by heater 101.The optical fiber base material G softened by heating, is drawn downwards
It stretches and is thinned, form glass fibre G1.The glass fibre G1 of thinning and formation is configured in the downstream side of heating furnace 100
Cooling device 1 optical fibre channel 13 in be sent into.
Cooling device 1 includes multiple (in this case, it is 3) cooling tubes 10 (10A~10C), they are in glass fibre G1
Traveling axis direction (up and down direction in Fig. 1) arrangement；And interconnecting piece 20 (20A, 20B), each other by adjacent cooling tube
It is attached in above-mentioned traveling axis direction.Cooling tube 10 and interconnecting piece 20 are the split constructions that can openedly and closedly constitute.In cooling
Pipe 10 and interconnecting piece 20 are connected with the driving device (illustration omitted) being for example made of opening and closing cylinder.The cooling tube of the split construction
10 and interconnecting piece 20 be configured to the drive actions by being realized by driving device, to the reciprocally close mobile and split structure in direction
Closed state is caused, or is constructed to opening state to the direction mutually deviated from is mobile and split on the contrary.
Cooling tube 10A includes metal cooling cylinder 11, is set to central portion；And heat-barrier material 12, it is set as
It will be covered around cooling cylinder 11.In addition, the optical fiber being inserted through for glass fibre G1 is logical in the central part of cooling tube 10A
Cooling tube 10A is penetrated through and is arranged by road 13.
Optical fibre channel 13 is to be constructed to closed state by the split of cooling tube 10A, thus at the center of cooling tube 10A
For example cylindric access that part is formed.Optical fibre channel 13 be connected with for by cooling gas such as helium to optical fibre channel 13
The gas supply port 14a of interior supply and for by the cooling gas in optical fibre channel 13 to outside discharge gas discharge outlet
14b.Gas supply port 14a and gas discharge outlet 14b is configured to connect with gas-recycling plant (illustration omitted), by by gas
The control that circulator carries out, cooling gas recycle in optical fibre channel 13.
The split of cooling cylinder 11 is constructed to closed state, and a part of above-mentioned optical fibre channel 13 is consequently formed.In cooling
In cylinder 11, in a manner of surrounding around by optical fibre channel 13, more (such as 4 total) coolant paths 15 are along optical fibre channel 13
Setting.
Coolant path 15 with for by refrigerant feed path 16a that cooling water etc. is supplied into coolant path 15 and be used for by
The refrigerant discharge path 16b connection that refrigerant in coolant path 15 is discharged to outside.Refrigerant feed path 16a and refrigerant discharge path
Diameter 16b is configured to connect with coolant circulating device (illustration omitted), and by the control carried out by coolant circulating device, refrigerant is cold
Circulation in matchmaker's access 15.It is by the refrigerant recycled in coolant path 15, the cooling gas in optical fibre channel 13 is cooling, lead to
The cooling gas after cooling is crossed, the glass fibre G1 passed through in optical fibre channel 13 is cooled down.
Heat-barrier material 12 and above-mentioned cooling cylinder 11 are also set up as split construction, together being capable of openedly and closedly structure with cooling cylinder 11
At.Heat-barrier material 12 is that a part of above-mentioned optical fibre channel 13 is consequently formed by being constructed to closed state for split.It is heat-insulated
Material 12 has the function of following etc., that is, prevents the temperature of the refrigerant recycled in the coolant path 15 of cooling cylinder 11 from rising.This
Outside, cooling tube 10B, 10C has structure identical with above-mentioned cooling tube 10A.
Cooling tube 10A and cooling tube 10B is attached by interconnecting piece 20A in the traveling axis direction of glass fibre G1.In addition,
Cooling tube 10B and cooling tube 10C is attached by interconnecting piece 20B in the traveling axis direction of glass fibre G1.Interconnecting piece 20A and company
Socket part 20B structure having the same.
Fig. 2 to Fig. 6 is the figure for indicating the structure of interconnecting piece 20 (20A, 20B).As shown in Fig. 2, interconnecting piece 20 (20A, 20B)
With inside interconnecting piece 21 and outside interconnecting piece 31.Inside interconnecting piece 21 and outside interconnecting piece 31 in interconnecting piece 20A, it is any
Side is connect with the lower end of cooling tube 10A, and another party connect with the upper end of cooling tube 10B.Inside connection in interconnecting piece 20B
Portion 21 and outside interconnecting piece 31, either one connect with the lower end of cooling tube 10B, the upper end of another party and cooling tube 10C
Connection.Inside interconnecting piece 21 becomes the split construction being made of 21a and 21b, and outside interconnecting piece 31 becomes to be made of 31a and 31b
Split construction.Inside interconnecting piece 21a and 21b are identical structures, and outside interconnecting piece 31a and 31b are identical structures.Cause
This, the label in corresponding each portion is that alphabetical " a " is replaced with " b " and is indicated, in the following, mainly to the inside connection as one side
Portion 21a and outside interconnecting piece 31a are illustrated.
Inside interconnecting piece 21a is as shown in Figures 2 and 3, is provided with for inside interconnecting piece 21a to be installed on cooling tube 10A
Bolt hole 22a.In the interconnecting piece 21a of inside, the face of that side shown in Fig. 2 is the first plane 23a, it is shown in Fig. 3 that
The face of side is the second plane 24a of the back side of above-mentioned first plane 23a.Inside interconnecting piece 21a make the first plane 23a with it is cold
But it in the state that the bottom surface of the lower end of pipe 10A is opposite, is bolted via bolt hole 22a and the lower end of cooling tube 10A.The
One plane 23a and the second plane 24a becomes to the parallel plane in the orthogonal direction of the traveling axis direction with glass fibre G1.
Outside interconnecting piece 31a is as shown in Figures 2 and 4, has the first outside interconnecting piece 32a and the second outside interconnecting piece 33a.
First outside interconnecting piece 32a is by chimeric with the recess portion 34a being arranged in the inside of the second outside interconnecting piece 33a, thus such as Fig. 2 institute
Show, is combined with the second outside interconnecting piece 33a and form outside interconnecting piece 31a.In addition, outside interconnecting piece 31b is shown in Fig. 2
By the state before the first outside interconnecting piece 32b and the second outside interconnecting piece 33b combination.
The first outside interconnecting piece 32a and the second outside interconnecting piece 33a after combination connect via in respective corresponding position
The bolt hole formed continuously is fixed by bolt 35a.In this example, it is fixed using 2 bolt 35a, but
The bolt of more roots can be used.
In the first outside interconnecting piece 32a, it is provided with the bolt hole for outside interconnecting piece 31a to be installed on to cooling tube 10B
36a (referring to Fig. 4).In the first outside interconnecting piece 32a, the face of that side shown in Fig. 2 is the second plane 38a, shown in Fig. 4
The face of that side is the first plane 37a of the back side of above-mentioned second plane 38a.Outside interconnecting piece 31a makes to connect on the outside of first
In the state that the first plane 37a of socket part 32a is opposite with the upper surface of the upper end of cooling tube 10B, via bolt hole 36a with it is cold
But the upper end of pipe 10B is bolted.First plane 37a and the second plane 38a becomes to the axis of travel side with glass fibre G1
The plane parallel to orthogonal direction.
First outside interconnecting piece 32a includes lower abutment portion 39a, is formed as rectangular shape；And upper abutment portion 40a,
It is set to the upside of lower abutment portion 39a, is formed as trapezoidal shape.
The recess portion 34a of second outside interconnecting piece 33a includes underside recess 34a1, can be by the first outside interconnecting piece 32a
Lower abutment portion 39a it is chimeric；And upper side pocket 34a2, it can be embedding by the upper abutment portion 40a of the first outside interconnecting piece 32a
It closes.Underside recess 34a1 is formed as rectangular shape in a manner of corresponding with the shape of lower abutment portion 39a.Upper side pocket 34a2 with
Mode corresponding with the shape of upper abutment portion 40a is formed as trapezoidal shape.
The first sealing material is installed along the inner peripheral surface of upper side pocket 34a2 in the recess portion 34a of the second outside interconnecting piece 33a
Expect 51a (example of the first airtight member).As sealing material, using the component with elasticity and air-tightness, for example, right
Sealing elements processed such as silicon sponge, silicon rubber, Teflon (Teflon) (registered trademark) etc..First sealing is installed
The size of the upper side pocket 34a2 of material 51a, is narrowed with the amount of thickness of the first sealing material 51a, becomes chimeric upper than carrying out
The small trapezoidal shape of the shape of abutment portion 40a.
Therefore, the first outside interconnecting piece 32a is fitted by the recess portion 34a in the second outside interconnecting piece 33a, thus upper base station
Portion 40a is abutted with a part (lower part) of the first sealing material 51a of upper side pocket 34a2.First sealing material 51a passes through upper
Abutment portion 40a is pressed to the orthogonal direction of the traveling axis direction with glass fibre G1 and deforms and (be crushed).It is fitted into as a result,
First outside interconnecting piece 32a is close contact in the recess portion 34a of the second outside interconnecting piece 33a.In the state of the contiguity, the first outside
Interconnecting piece 32a and the second outside interconnecting piece 33a are fixed by bolt 35a.
Inside interconnecting piece 21a is recessed with outside interconnecting piece 31a (the second outside interconnecting piece 33a) as shown in the arrow A of Fig. 2
Upper side pocket 34a2 in portion 34a is chimeric.Inside interconnecting piece 21a and outside interconnecting piece 31a, in the axis of travel with glass fibre G1
The orthogonal direction in direction is fitted into.Inside interconnecting piece 21a is formed as in a manner of corresponding with the shape of upper side pocket 34a2
Trapezoidal shape.Inside interconnecting piece 21a includes the upper abutment portion 25a of trapezoidal shape, is formed in opposite with the lower end of cooling tube 10A
Side (the first side plane 23a)；And the lower abutment portion 26a of trapezoidal shape, being formed in the downside of abutment portion 25a, (second is flat
The face side 24a), a circle smaller than upper abutment portion 25a.The size of lower abutment portion 26a is formed as the upper base with the first outside interconnecting piece 32a
The identical size of size of platform portion 40a.
Therefore, interconnecting piece 21a in inside is chimeric with the upper side pocket 34a2 in the recess portion 34a of the second outside interconnecting piece 33a, by
A part (top) of the first sealing material 51a of the lower abutment portion 26a and upper side pocket 34a2 of this inside interconnecting piece 21a are supported
It connects.First sealing material 51a is pressed by lower abutment portion 26a, the direction orthogonal to the traveling axis direction with glass fibre G1
And it deforms and (is crushed).Chimeric inside interconnecting piece 21a is close contact in the recess portion 34a of the second outside interconnecting piece 33a as a result, really
Protect the air-tightness between the interconnecting piece 21a and the second outside interconnecting piece 33a of inside.In addition, at this point, the upper base station of inside interconnecting piece 21a
The peripheral part of the big circle of abutment portion 26a is covered in the upside of the first sealing material 51a under the ratio of portion 25a, thus with second outside
The upper side pocket 34a2 of side interconnecting piece 33a is chimeric.
Fig. 5 is from the first plane 23a, 23b side by the inside interconnecting piece 21a of split construction and inside interconnecting piece 21b
The figure of state after docking.As shown in figure 5, inside interconnecting piece 21a, 21b have interface 27a, 27b relative to each other, at it
Interface 27a, 27b are formed with groove portion 28a, 28b of semi-circular shape in plan view.If by inside interconnecting piece 21a, 21b
It abuts each other, then forms the insertion hole 28 of round by these groove portions 28a, 28b.Insertion hole 28 is configured to and cooling device 1
Optical fibre channel 13 it is continuous, constitute a part for the glass fibre G1 access being inserted through.
In addition, being formed with recess portion 29a, 29b in the end of a side in interface 27a, 27b.Distinguish in recess portion 29a, 29b
Second sealing material 52a, 52b (example of the second airtight member) is installed.The thickness of second sealing material 52a, 52b,
Formed slightly thicker than the depth of recess portion 29a, 29b.Therefore, second sealing material 52a, 52b from recess portion 29a, 29b forwards (into
The inside interconnecting piece side of another party of row docking) it is arranged with protruding slightly above (referring to Fig. 2 and Fig. 3).Also, interface 27a,
27b, in the end with the opposite side for being formed with the side above-mentioned recess portion 29a, 29b, with opposite with above-mentioned second sealing material 52a, 52b
Mode be formed with lug boss 30a, 30b.Lug boss 30a, 30b interface 27a, 27b thickness direction (glass fibre G1's
Traveling axis direction) it is continuously formed.
As shown in figure 5, if inside interconnecting piece 21a, 21b abutted each other, by opposite inside interconnecting piece 21a,
The interface of 21b, second sealing material 52a, 52b of the state of protrusion is to the orthogonal side of the traveling axis direction with glass fibre G1
It deforms and (is crushed) to being pressed.Inside interconnecting piece 21a, 21b touches each other as a result, it is ensured that air-tightness between the two.Separately
Outside, if inside interconnecting piece 21a, 21b abutted each other, lug boss 30a, 30b are embedded to respectively to the second opposite sealing material
Expect in 52a, 52b.Even if being slightly distorted in interface 27a, 27b as a result, can also further increase with glass fibre G1
Optical fibre channel 13 centered on cooling device 1 inside air-tightness.
In addition, as shown in figure 5, inside interconnecting piece 21 is formed as the interior of the inside interconnecting piece 21a for making trapezoidal shape and trapezoidal shape
Hexagon shape made of side interconnecting piece 21b docking.That is, embedding with upper side pocket 34a2,34b2 of second outside interconnecting piece 33a, 33b
The section N of the chimeric surface of inside interconnecting piece 21a, 21b of conjunction is formed as hexagon shape.Moreover, being formed as the whole of its hexagon
Interior angle be less than 180 degree.
Fig. 6 will be connected on the outside of split construction from the second plane 38a, 38b side of first outside interconnecting piece 32a, 32b
The figure of state after socket part 31a and outside interconnecting piece 31b docking.As shown in fig. 6, the first outside of outside interconnecting piece 31a, 31b
Interconnecting piece 32a, 32b have interface 41a, 41b relative to each other.In addition, the second outside of outside interconnecting piece 31a, 31b connect
Socket part 33a, 33b has interface 42a (42a1,42a2) relative to each other, 42b (42b1,42b2).
In interface 41a, 41b of first outside interconnecting piece 32a, 32b, it is formed with the slot of semi-circular shape in plan view
Portion 43a, 43b.If outside interconnecting piece 31a, 31b abutted each other, inserting for round is formed by these groove portions 43a, 43b
Enter hole 43.Insertion hole 43 be configured to it is continuous with the optical fibre channel 13 of cooling device 1, together with the insertion hole 28 of inside interconnecting piece 21
Constitute a part for the glass fibre G1 access being inserted through.
In addition, being formed with recess portion 44a, 44b in the end of a side in interface 41a, 41b.It is installed in recess portion 44a, 44b
There is third sealing material 53a, 53b (example of third airtight member).The thickness of third sealing material 53a, 53b are formed
It obtains slightly thicker than the depth of recess portion 44a, 44b.Therefore, third sealing material 53a, 53b (are docked forwards from recess portion 44a, 44b
Another party the first outside interconnecting piece side) (referring to Fig. 2) is set with protruding slightly above.Also, in interface 41a, 41b, with
It is formed with the end of the opposite side of the side above-mentioned recess portion 44a, 44b, with the mode shape opposite with above-mentioned third sealing material 53a, 53b
At having lug boss 45a, 45b.Lug boss 45a, 45b are in thickness direction (the axis of travel side of glass fibre G1 of interface 41a, 41b
To) be continuously formed.
The interface 42a of second outside interconnecting piece 33a is formed as having step at interface 42a1 and 42a2.In addition,
The interface 42b of second outside interconnecting piece 33b is formed as having step at interface 42b1 and 42b2.Respectively compared with downside
Interface (in this example, interface 42a2,42b1) is equipped with the 4th sealing material 54a, 54b (one of third airtight member
Example).The thickness of 4th sealing material 54a, 54b forms slightly thicker than the step of above-mentioned interface.Therefore, the 4th sealing material
(the second outside interconnecting piece side for the another party docked) is arranged 54a with protruding slightly above forwards compared with interface 42a1.Together
Sample, the 4th sealing material 54b is arranged with protruding slightly above forwards compared with interface 42b2.Second outside interconnecting piece 33a's
Interface 42a1 is formed as becoming coplanar with the interface 41a of the first outside interconnecting piece 32a.In addition, the second outside interconnecting piece
The interface 42b2 of 33b is formed as becoming coplanar with the interface 41b of the first outside interconnecting piece 32b.
As shown in fig. 6, passing through the first opposite outside interconnecting piece if outside interconnecting piece 31a, 31b abutted each other
Interface, third sealing material 53a, 53b of the state of protrusion is to the orthogonal direction of the traveling axis direction with glass fibre G1
It is pressed and deforms and (be crushed).First outside interconnecting piece 32a, 32b touches each other as a result, it is ensured that air-tightness between the two.Separately
Outside, if outside interconnecting piece 31a, 31b abutted each other, lug boss 45a, 45b of first outside interconnecting piece 32a, 32b distinguishes
In embedment to opposite third sealing material 53a, 53b.Even if being slightly distorted in interface 41a, 41b as a result, also can
Improve the air-tightness inside the cooling device 1 centered on the optical fibre channel 13 of glass fibre G1.
In addition, passing through the docking of the second opposite outside interconnecting piece if outside interconnecting piece 31a, 31b abutted each other
4th sealing material 54a, the 54b in face, the state of protrusion is pressed to the orthogonal direction of the traveling axis direction with glass fibre G1
And it deforms and (is crushed).Second outside interconnecting piece 33a, 33b touches each other as a result, it is ensured that air-tightness between the two.
In addition, as described above, outside chimeric with upper side pocket 34a2,34b2 of second outside interconnecting piece 33a, 33b first
Upper abutment portion 40a, 40b of side interconnecting piece 32a, 32b, are formed as trapezoidal shape.Therefore, as shown in fig. 6, by the upper base station of trapezoidal shape
Face made of the upper abutment portion 40b of portion 40a and trapezoidal shape docking, is formed as hexagon shape.That is, with upper side pocket 34a2,34b2
The section M of the chimeric surface of first chimeric outside interconnecting piece 32a, 32b, is formed as hexagon shape.Moreover, being formed as its hexagon
Whole interior angles be less than 180 degree.
Next, being illustrated to the assemble method of cooling device 1.
Inside interconnecting piece 21a is passed through in the lower end of the cooling tube of the side for the cooling tube 10A for being configured to split construction
Bolt is fixed.The first outside is connected in the upper end of the cooling tube of the side for the cooling tube 10B for being configured to split construction
Portion 32a is fixed by bolt.With the recess portion of the first outside interconnecting piece 32a of above-mentioned fixation and the second outside interconnecting piece 33a
34a chimeric mode, combines the second outside interconnecting piece 33a with the first outside interconnecting piece 32a, by bolt 35a by two companies
Socket part is fixed each other.
Next, make above-mentioned fixation inside interconnecting piece 21a and above-mentioned fixation the second outside interconnecting piece 33a to glass
The direction that the traveling axis direction of fiber G1 is orthogonal is relatively moved, make inside interconnecting piece 21a and the second outside interconnecting piece 33a it is recessed
Upper side pocket 34a2 in portion 34a is chimeric.As a result, the cooling tube of a side of the cooling tube 10A and cooling tube 10B of split construction that
This inside interconnecting piece 21a and outside interconnecting piece 31a via interconnecting piece 20A and link.
Similarly, using the inside interconnecting piece 21a of interconnecting piece 20B and outside interconnecting piece 31a by cooling tube 10B and cooling tube
The cooling tube of a side of 10C links each other.The cooling device 1 for the split construction being made of multistage cooling tube is made as a result,
A side side.In addition, similarly, making another party side of the cooling device 1 of split construction.Next, split by what is produced
The cooling device of construction abuts each other.Cooling device 1 is completed as a result,.
It, can not also will be whole in addition, the sequence that the cooling device of the above-mentioned split construction produced is abutted each other
The cooling tube of split construction simultaneously docks, and successively docks from the cooling tube of top.It can also be for example by cooling tube 10A
Cooling tube abut each other after, the cooling tube of cooling tube 10B is abutted each other, it is finally that the cooling tube of cooling tube 10C is right each other
It connects, thus carries out the assembling of cooling device 1.
According to the cooling device 1 of such as above-mentioned structure, for example, making to connect in the fixed inside in the lower end of cooling tube 10A
Portion 21a and the outside interconnecting piece 31a fixed in the upper end of cooling tube 10B are orthogonal to the traveling axis direction with glass fibre G1
Direction is relatively moved and is mutually fitted into, thus it enables that cooling tube 10A and 10B link.As described above, by multistage cooling tube
10 when being linked, and applies pressing force to the direction orthogonal with above-mentioned traveling axis direction to cooling tube 10, cold thus, it is possible to ensure
But the air-tightness of the mutual interconnecting piece 20 of pipe 10.Without in order to ensure the airtight of the mutual interconnecting piece 20 of cooling tube 10 and from above-mentioned
Traveling axis direction (up and down direction) passes through cylinder etc. for 10 Continued depression of cooling tube, therefore will not apply to above-mentioned axis of travel direction
Buckling stress.Even if as a result, during length in the case where use, being also able to suppress and the deformation such as bending in cooling tube 10,
It can ensure air-tightness.
In addition, peripheral shape becomes hexagon when abutting each other inside interconnecting piece 21a, 21b of split construction
Shape.Similarly, when abutting each other first outside interconnecting piece 32a, 32b, inner circumferential shape becomes hexagon shape.Therefore, example
Such as, when keeping inside interconnecting piece 21a, 21b chimeric with second outside interconnecting piece 33a, 33b, as shown in figure 5, from inside interconnecting piece
The inclined surface of 21a, 21b apply the power F1 vertical with chimeric direction and parallel with chimeric direction to first sealing material 51a, 51b
Power F2 resultant force F3.By resultant force F3, first sealing material 51a, 51b deforms.
As noted above, first sealing material 51a, 51b also deforms in the inclined surface of inside interconnecting piece 21a, 21b,
Therefore inside interconnecting piece 21a, 21b is all touched in the side to connect with first sealing material 51a, 51b, can be improved interior
Air-tightness between side interconnecting piece 21a, 21b and first outside interconnecting piece 32a, 32b.In addition, making the first outside interconnecting piece
When 32a, 32b are chimeric with second outside interconnecting piece 33a, 33b, air-tightness also can be similarly improved.
In addition, for example, peripheral shape when abutting each other inside interconnecting piece 21a, 21b and by the first outside interconnecting piece
Inner circumferential shape when 32a, 32b are abutted each other be rectangular shape structure in the case where (not shown), only generate side chimeric with its
To parallel power, the power vertical with chimeric direction is not generated.Therefore, in the case where the structure of above-mentioned rectangular shape, first is close
Closure material 51a, 51b deform in the direction parallel with chimeric direction, but do not become in the direction vertical with chimeric direction
Shape.Therefore, in the case where the structure of above-mentioned rectangular shape, first sealing material 51a, 51b and inside interconnecting piece 21a, 21b's
Touched perpendicular to the side on the direction of chimeric direction, but is not parallel to chimeric direction with inside interconnecting piece 21a, 21b
Direction on side contiguity.
In addition, second sealing material 52a, 52b is pressed and deforms when abutting each other inside interconnecting piece 21a, 21b,
Thus, it is possible to ensure the inside mutual air-tightness of interconnecting piece 21a, 21b.
In addition, when first outside interconnecting piece 32a, 32b is abutted each other, third sealing material 53a, 53b be pressed and
Deformation, thus third sealing material 53a, 53b and first outside interconnecting piece 32a, 32b touch, it can be ensured that the first outside connection
The mutual air-tightness of portion 32a, 32b.Also, when second outside interconnecting piece 33a, 33b is abutted each other, the 4th sealing material
54a, 54b are pressed and deform, and thus second outside interconnecting piece 33a, 33b and the 4th sealing material 54a, 54b touches, can be true
Protect the second mutual air-tightness of outside interconnecting piece 33a, 33b.
As described above, only the interconnecting piece 20 of split construction is docked in the direction orthogonal with above-mentioned traveling axis direction, energy
Enough ensure that the insertion hole 28 of inside interconnecting piece 21a, 21b and the first outside connect by the first sealing material to the 4th sealing material
Air-tightness around the insertion hole 43 of portion 32a, 32b.Thereby, it is possible to prevent cooling gas from passing through inside interconnecting piece 21a, 21b
Insertion hole 28 and first outside interconnecting piece 32a, 32b insertion hole 43 and leak to the outside.In addition, for example, being connected in inside
It is produced between second plane 24a, 24b of portion 21a, 21b and the second plane 38a, 38b of first outside interconnecting piece 32a, 32b
In the case where gap, it can similarly prevent cooling gas to external leakage.
In addition, the air-tightness by ensuring interconnecting piece 20A, 20B, so as to reduce the leakage of cooling gas, therefore i.e.
Using the helium atmosphere for comparing high price, it is also able to suppress the rising of cost.
In addition, the interconnecting piece 20 of split construction is it is not necessary to be the thickness and inside interconnecting piece 21b of inside interconnecting piece 21a
Thickness it is identical, the thickness of the thickness and the first outside interconnecting piece 32b that are also possible to the first outside interconnecting piece 32a is not identical.Fig. 7
It is the figure for indicating the variation of cooling device of present embodiment, is the cross-sectional view for cutting off interconnecting piece 20 in its length direction,
That is, by the direction of inside the interconnecting piece 21a and 21b of split construction docking and by outside the interconnecting piece 31a and 31b of split construction
The cross-sectional view of the direction cutting of docking.In variation shown in Fig. 7, the thickness B1 of inside interconnecting piece 21a is formed as and inside
The thickness B2 of interconnecting piece 21b different thickness.In addition, the thickness C1 of the first outside interconnecting piece 32a of outside interconnecting piece 31a, shape
As the thickness C2 different from the thickness of the first outside interconnecting piece 32b of outside interconnecting piece 31b.Moreover, by inside interconnecting piece 21a
Thickness B1 and the first outside interconnecting piece 32a the thickness that is added of thickness C1, be formed as with by the thickness of inside interconnecting piece 21b
The identical thickness of thickness that the thickness C2 of degree B2 and the first outside interconnecting piece 32b is added.
Therefore, the position of the opposite face (the first opposite face) of inside interconnecting piece 21a and the first outside interconnecting piece 32a, with it is interior
The position of the opposite face (the second opposite face) of side interconnecting piece 21b and the first outside interconnecting piece 32b, in the axis of travel of glass fibre G1
Direction is staggered.In other words, the second plane 38a phase of the second plane 24a of inside interconnecting piece 21a and the first outside interconnecting piece 32a
Pair position P1 and inside interconnecting piece 21b the second plane 24b it is opposite with the second plane 38b of the first outside interconnecting piece 32b
Position P2 is staggered in the traveling axis direction of glass fibre G1.
If being set as above-mentioned variation, such as even if the installation site of adjacent cooling tube 10A, 10B are staggered, inside
It is generated between side interconnecting piece 21a and the first outside interconnecting piece 32a and between inside interconnecting piece 21b and the first outside interconnecting piece 32b
The gap in the gap of channel-shaped, these channel-shaped will not linearly be connected but be staggered.It therefore, can be to the gas by gap
Free flowing is inhibited, and the gas in cooling tube can be made to be not easy to leak.
More than, in detail and the present invention is described referring to specific embodiment, but for those skilled in the art
For member, it is clear that can make various changes or correct under the premise of not departing from spirit of the invention, range.In addition, above-mentioned
Quantity, position, shape of the structure member of explanation etc. are not limited to the above embodiment, and can be changed to be adapted for carrying out this hair
Bright quantity, position, shape etc..
Claims (6)
1. the wire-drawing frame of a kind of cooling device used in the wire-drawing frame of optical fiber, the optical fiber passes through heating furnace heating optical fiber
Wire drawing is carried out with base material,
The cooling device includes
Multiple cooling tubes of split construction, they are arranged in the traveling axis direction of the optical fiber；And
The interconnecting piece of split construction, by the adjacent cooling tube in the multiple cooling tube each other the traveling axis direction into
Row connection,
The interconnecting piece be the cooling tube of a side of adjacent cooling tube end be arranged split construction inside interconnecting piece,
With the outside interconnecting piece of the split construction of the end of the cooling tube in another party setting in the side orthogonal with the traveling axis direction
To chimeric construction,
There is the first airtight member between the inside interconnecting piece and the outside interconnecting piece,
First airtight member is pressed in the direction orthogonal with the traveling axis direction and is deformed, so that the inside be connected
It is set as airtight between socket part and the outside interconnecting piece.
2. the cooling device according to claim 1 used in the wire-drawing frame of optical fiber, wherein
There is the second airtight member between the inside interconnecting piece of split construction,
Second airtight member is pressed in the direction orthogonal with the traveling axis direction and is deformed, so that the inside be connected
Socket part is set as airtight each other.
3. the cooling device according to claim 1 or 2 used in the wire-drawing frame of optical fiber, wherein
There is third airtight member between the outside interconnecting piece of split construction,
The third airtight member is pressed in the direction orthogonal with the traveling axis direction and is deformed, so that the outside be connected
Socket part is set as airtight each other.
4. the cooling device according to any one of claim 1 to 3 used in the wire-drawing frame of optical fiber, wherein
The inside interconnecting piece and the outside interconnecting piece are respectively provided with parallel with the traveling axial direction is orthogonal to
Opposite face,
The inside interconnecting piece and the outside interconnecting piece of one side of split construction, the first opposite face in the opposite face
Place is opposite,
The inside interconnecting piece and the outside interconnecting piece of another party of split construction, second in the opposite face are opposite
It is opposite at face,
First opposite face and second opposite face are staggered in traveling axis direction in the state of by split structural closure.
5. the cooling device according to any one of claim 1 to 4 used in the wire-drawing frame of optical fiber, wherein
The cooling device has for flowing helium atmosphere in the cooling tube and carries out cooling, institute to the optical fiber
State the supply mouth and outlet of helium atmosphere.
6. the cooling device according to any one of claim 1 to 5 used in the wire-drawing frame of optical fiber, wherein
The section shape of the inside interconnecting piece and the chimeric surface in the outside interconnecting piece is that whole interior angles is less than 180 degree
Hexagon shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017240359A JP6904235B2 (en) | 2017-12-15 | 2017-12-15 | Cooling device used for optical fiber drawing device |
| JP2017-240359 | 2017-12-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109928613A true CN109928613A (en) | 2019-06-25 |
| CN109928613B CN109928613B (en) | 2022-06-07 |
Family
ID=66984737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811533467.7A Active CN109928613B (en) | 2017-12-15 | 2018-12-14 | Cooling device used in optical fiber drawing device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6904235B2 (en) |
| CN (1) | CN109928613B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01183434A (en) * | 1988-01-18 | 1989-07-21 | Sumitomo Electric Ind Ltd | Optical fiber drawing device |
| JPH05186238A (en) * | 1992-01-13 | 1993-07-27 | Fujikura Ltd | Optical fiber-spinning machine |
| CN101353224A (en) * | 2007-07-24 | 2009-01-28 | 信越化学工业株式会社 | Heating furnace |
| JP2010173895A (en) * | 2009-01-29 | 2010-08-12 | Fujikura Ltd | Device for manufacturing optical fiber and method for manufacturing optical fiber |
| US20130298501A1 (en) * | 2012-05-14 | 2013-11-14 | Nextrom Oy | Apparatus |
| JP2014141373A (en) * | 2013-01-24 | 2014-08-07 | Sumitomo Electric Ind Ltd | Seal structure of fiber drawing furnace for optical fiber and fiber drawing method for optical fiber |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02221136A (en) * | 1989-02-20 | 1990-09-04 | Fujikura Ltd | Optical fiber drawing device |
| JP3377164B2 (en) * | 1997-03-21 | 2003-02-17 | 住友電気工業株式会社 | Optical fiber cooling device |
| FR2920887B1 (en) * | 2007-09-07 | 2009-11-20 | Legris Sa | DEVICE FOR CONNECTING END OF GUIDE TUBES AND PROTECTING A CABLE |
| JP5131973B2 (en) * | 2008-01-23 | 2013-01-30 | 株式会社アルバック | Pipe joint manufacturing method and jig |
| JP5664420B2 (en) * | 2011-04-06 | 2015-02-04 | 住友電気工業株式会社 | Optical fiber drawing furnace and drawing method |
| JP5910278B2 (en) * | 2012-04-19 | 2016-04-27 | 住友電気工業株式会社 | Optical fiber manufacturing method |
| JP6340941B2 (en) * | 2014-06-18 | 2018-06-13 | 住友電気工業株式会社 | Optical fiber cooling device and optical fiber manufacturing method |
-
2017
- 2017-12-15 JP JP2017240359A patent/JP6904235B2/en active Active
-
2018
- 2018-12-14 CN CN201811533467.7A patent/CN109928613B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01183434A (en) * | 1988-01-18 | 1989-07-21 | Sumitomo Electric Ind Ltd | Optical fiber drawing device |
| JPH05186238A (en) * | 1992-01-13 | 1993-07-27 | Fujikura Ltd | Optical fiber-spinning machine |
| CN101353224A (en) * | 2007-07-24 | 2009-01-28 | 信越化学工业株式会社 | Heating furnace |
| JP2010173895A (en) * | 2009-01-29 | 2010-08-12 | Fujikura Ltd | Device for manufacturing optical fiber and method for manufacturing optical fiber |
| US20130298501A1 (en) * | 2012-05-14 | 2013-11-14 | Nextrom Oy | Apparatus |
| CN103423459A (en) * | 2012-05-14 | 2013-12-04 | 耐斯隆公开公司 | Appratus with sealing device |
| JP2014141373A (en) * | 2013-01-24 | 2014-08-07 | Sumitomo Electric Ind Ltd | Seal structure of fiber drawing furnace for optical fiber and fiber drawing method for optical fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019108232A (en) | 2019-07-04 |
| CN109928613B (en) | 2022-06-07 |
| JP6904235B2 (en) | 2021-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112752919B (en) | Assembly device for pipeline connection | |
| CN109928613A (en) | The cooling device used in the wire-drawing frame of optical fiber | |
| WO2020233336A1 (en) | Sealed conduit connector | |
| JP5894111B2 (en) | Device with sealing | |
| CN105116507B (en) | A kind of optical cable high-efficiency sealing device | |
| US11421946B2 (en) | Heat exchanger and water heating apparatus including the same | |
| US20160327344A1 (en) | Heat exchanger | |
| CN107940145A (en) | Anti-seismic flexible slip joint device | |
| KR101842398B1 (en) | Duct connector with packing | |
| CN210318899U (en) | Sealed conduit joint | |
| KR102197055B1 (en) | Heat exchanger for electric element cooling | |
| KR940021976A (en) | Apparatus for manufacturing connectors for fluid guide elements, sleeve couplings for such connectors, and methods for connecting connectors | |
| JP5000724B2 (en) | Needle interface for fluid connection | |
| CN106399053B (en) | A kind of PCR reaction unit and its application method | |
| CN106839610B (en) | A kind of air duct sealing device and encapsulating method applied to refrigeration equipment | |
| CN109695738B (en) | Sliding type switching valve and refrigeration cycle system | |
| KR101423692B1 (en) | Heating type angle valve | |
| JP2002333290A (en) | Liquid-liquid heat exchanger of hot water supply apparatus | |
| CN105865912A (en) | Equipment for testing resistance to environmental stress of plastic | |
| Alana et al. | The causal boundary of product spacetimes | |
| KR102211620B1 (en) | Socket ring structure for duct | |
| CN208546980U (en) | Seperated molding water cooled burner | |
| CN219159768U (en) | Double-sealing groove type pipe fitting | |
| KR102643271B1 (en) | Reacting furnace | |
| US20230391162A1 (en) | Casing unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |