CN109611651B - Energy-saving support for heat transfer pipeline - Google Patents
Energy-saving support for heat transfer pipeline Download PDFInfo
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- CN109611651B CN109611651B CN201811465143.4A CN201811465143A CN109611651B CN 109611651 B CN109611651 B CN 109611651B CN 201811465143 A CN201811465143 A CN 201811465143A CN 109611651 B CN109611651 B CN 109611651B
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- cover plate
- plate
- lower cover
- upper cover
- fixing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
- F16L59/135—Hangers or supports specially adapted for insulated pipes
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supports For Pipes And Cables (AREA)
- Thermal Insulation (AREA)
Abstract
The invention provides an energy-saving support for a heat transfer pipeline. The energy-saving support for the heat delivery pipeline comprises an upper cover plate, a lower cover plate, a fixing mechanism, an energy-saving mechanism, a clamping groove, a sealing mechanism and a supporting mechanism, wherein the fixing mechanism is arranged on the opposite side surfaces of the upper cover plate with the side surface in an arc-shaped structure and the lower cover plate with the side surface in an arc-shaped structure; the energy-saving mechanism is arranged on the inner side walls of the upper cover plate and the lower cover plate and comprises a fixing strip and a maintaining plate; the sealing mechanism is clamped in the clamping grooves at the two ends of the upper cover plate, and the sealing mechanism is clamped in the clamping grooves at the two ends of the lower cover plate; the supporting mechanism is rotatably connected to the side wall of the lower cover plate. The energy-saving support for the heat delivery pipeline provided by the invention reduces the contact area between the support and the heat delivery pipeline, reduces the absorption of the support to the heat of the heat delivery pipeline, improves the heat preservation effect of the heat delivery pipeline, saves energy, and can fix the joint of the heat delivery pipeline.
Description
Technical Field
The invention relates to the technical field of heat transfer pipeline supports, in particular to an energy-saving support for a heat transfer pipeline.
Background
The heat distribution pipeline belongs to the class of pressure pipelines and is mainly used for heating, ventilation, air conditioning steam and industrial gas, the medium of the heat distribution pipeline comprises hot water and steam, and the heat distribution pipeline is characterized in that the temperature of the conveyed medium is high, the pressure is high, the flow speed is high, and the heat distribution pipeline can bring large expansion force and impact force to the pipeline during operation.
But because current heating power pipe all carries out comprehensive contact with two fixed plates of side semicircular structure and heating power pipeline when supporting and realizes fixing, because two fixed plates are great with the area of heating power pipeline contact, the support siphons away heating power pipeline's heat when heating power pipeline is fixed, cause the energy to run off and lead to the heat preservation effect to reduce, and current heating power pipeline support most all is fixed heating power pipeline surface, the junction is all connected fixedly through the connector, fixed effect is poor.
Therefore, there is a need to provide a new energy-saving support for heat transfer pipelines to solve the above technical problems.
Disclosure of Invention
The invention solves the technical problem of providing the energy-saving support for the heat delivery pipeline, which reduces the absorption of the support to the heat of the heat delivery pipeline, improves the heat preservation effect of the heat delivery pipeline, saves energy and can fix the joint of the heat delivery pipeline.
In order to solve the technical problem, the invention provides an energy-saving support for a heat transfer pipeline, which comprises: the energy-saving energy; the energy-saving mechanism is arranged on the inner side walls of the upper cover plate and the lower cover plate and comprises fixing strips and a maintaining plate, the fixing strips with inverted horn-shaped structures on the cross sections are welded on the inner side walls of the upper cover plate and the lower cover plate at equal intervals, and the maintaining plate with a triangular structure on the cross section is fixedly connected with the side surfaces of a plurality of fixing strips on the inner side walls of the upper cover plate and the lower cover plate; the clamping grooves are formed in the two ends of the upper cover plate and the two ends of the lower cover plate; the supporting mechanism is rotatably connected to the side wall of the lower cover plate.
Preferably, the fixing mechanism comprises a first fixing plate, a bolt and a second fixing plate, the upper cover plate is close to the first fixing plate with the arc-shaped structure at the position of the side wall edge of the lower cover plate relative to the welding side, the lower cover plate is close to the second fixing plate with the arc-shaped structure at the position of the side wall edge of the first fixing plate relative to the welding side, and the first fixing plate is fixedly connected with the second fixing plate through the bolt.
Preferably, the sealing mechanism includes a first rubber plate, four clamping rings, a second rubber plate, a latch, a sealing groove and four clamping rings, the inside of the clamping grooves at the two ends of the upper cover plate are respectively clamped and connected with two of the clamping rings, the clamping rings are welded at the tops of the clamping rings at one end of the upper cover plate and are of arc structures, the clamping rings are welded at the bottom surfaces of the clamping rings at the other end of the upper cover plate and are of arc structures, the second rubber plate is fixedly connected with the inner side walls of the clamping rings at the two ends of the upper cover plate and is of arc structures, a plurality of latches which are of triangular prism structures are arranged at the bottom surface edge of one of the second rubber plates and the top surface edge of the other second rubber plate, the inside of the clamping grooves at the two ends of the lower cover plate are clamped and connected with the other two clamping rings, and the tops of the clamping rings at the two ends, Bottom butt welding is two in addition the rand is located lap both ends down the equal fixed connection of inside wall of rand first rubber slab, wherein the top border department of first rubber slab, another the bottom border department of first rubber slab sets up the seal groove, the latch block in the inside of seal groove.
Preferably, the supporting mechanism comprises a fixed seat, a rotating shaft, a connecting column, a screw rod, a connecting seat, a rotating pin, a movable plate and a chassis, wherein the fixed seat is welded at one half of the side wall of the lower cover plate, the connecting column is connected to the inside of the fixed seat in a rotating mode through the rotating shaft, the screw rod is in threaded connection with the bottom of the connecting column, the connecting seat is welded at the bottom of the screw rod, the movable plate is provided with an opening at the bottom, the movable plate is connected to the bottom of the connecting seat in a rotating mode through the rotating pin, and the top of the movable plate is of an arc-shaped structure.
Preferably, the width of the first rubber plate and the width of the second rubber plate are larger than the distance from the inner side wall of the clamping ring to the inner side wall of the upper cover plate and the inner side wall of the lower cover plate, and the diameters of the first rubber plate and the second rubber plate are equal.
Preferably, the inner diameters of the upper cover plate and the lower cover plate are equal, and the distances from the fixed seat to the two ends of the lower cover plate are equal.
Compared with the related art, the energy-saving support for the heat transfer pipeline provided by the invention has the following beneficial effects:
the invention provides an energy-saving support for a heat delivery pipeline, wherein the side walls of an upper cover plate and a lower cover plate are both arc-shaped structures, the cross sections of the upper cover plate and the lower cover plate are circular after the upper cover plate and the lower cover plate are fixed through a first fixing plate and a second fixing plate, the fixed support at the joint of two heat delivery pipelines is realized, the upper cover plate and the inner side wall of the lower cover plate are fixedly connected with fixing strips at equal intervals, one end of each fixing strip, which is far away from the upper cover plate, is fixedly connected with a maintaining plate with a triangular cross section, on the other hand, the contact area with the heat delivery pipeline is reduced, the heat preservation effect of the heat delivery pipeline is prevented from being reduced due to heat loss, and energy.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of an energy-saving support for a heat transfer pipeline provided by the present invention;
FIG. 2 is a schematic view of the connection of the upper cover plate, the lower cover plate and the energy-saving mechanism shown in FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is a schematic view of the connection of the upper cover plate, the maintaining plate and the sealing mechanism shown in FIG. 3.
Reference numbers in the figures: 1. the upper cover plate, 2, lower cover plate, 3, draw-in groove, 4, sealing mechanism, 41, first rubber slab, 42, rand, 43, second rubber slab, 44, latch, 45, seal groove, 46, snap ring, 5, fixed establishment, 51, first fixed plate, 52, bolt, 53, second fixed plate, 6, supporting mechanism, 61, fixing base, 62, pivot, 63, spliced pole, 64, screw rod, 65, connecting seat, 66, rotating pin, 67, fly leaf, 68, chassis, 7, energy-saving mechanism, 71, fixed strip, 72, the board that maintains fastly.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Please refer to fig. 1, fig. 2, fig. 3 and fig. 4 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of the energy-saving support for heat transfer pipeline according to the present invention; FIG. 2 is a schematic view of the connection of the upper cover plate, the lower cover plate and the energy-saving mechanism shown in FIG. 1; FIG. 3 is an enlarged view of portion A of FIG. 1; FIG. 4 is a schematic view of the connection of the upper cover plate, the maintaining plate and the sealing mechanism shown in FIG. 3. The energy-conserving support of heating power pipeline includes: upper cover plate 1, lower apron 2, fixed establishment 5, energy-conserving mechanism 7, draw-in groove 3, sealing mechanism 4 and supporting mechanism 6, upper cover plate 1 with lower apron 2 passes through fixed establishment 5 fixed connection, energy-conserving mechanism 7 is located upper cover plate 1 with the inside wall of lower apron 2, draw-in groove 3 is seted up in the both ends of upper cover plate 1 the both ends of apron 2 down, sealing mechanism 4 block in upper cover plate 1 the draw-in groove 3 at 2 both ends of lower apron, supporting mechanism 6 install in the bottom of apron 2 down.
In a specific implementation process, as shown in fig. 1 and 2, the fixing mechanism 5 is disposed on the opposite side surfaces of the upper cover plate 1 with the side surface in an arc-shaped structure and the lower cover plate 2 with the side surface in an arc-shaped structure, and the upper cover plate 1 and the lower cover plate 2 are fixedly connected through the fixing mechanism 5; the energy-saving mechanism 7 is mounted on the inner side walls of the upper cover plate 1 and the lower cover plate 2, the energy-saving mechanism 7 comprises fixing strips 71 and a maintaining plate 72, the fixing strips 71 with inverted horn-shaped cross sections are welded on the inner side walls of the upper cover plate 1 and the lower cover plate 2 at equal intervals, and the maintaining plate 72 with triangular cross sections is fixedly connected to the side surfaces of a plurality of the fixing strips 71 on the inner side walls of the upper cover plate 1 and the lower cover plate 2; the clamping grooves 3 are formed in two ends of the upper cover plate 1 and two ends of the lower cover plate 2; the supporting mechanism 6 is rotatably connected to the side wall of the lower cover plate 2.
Referring to fig. 1, 2 and 3, the fixing mechanism 5 includes a first fixing plate 51, a bolt 52 and a second fixing plate 53, the upper cover plate 1 is close to the first fixing plate 51 whose side face is welded relatively to the side edge of the lower cover plate 2, the lower cover plate 2 is close to the second fixing plate 53 whose side face is welded relatively to the side edge of the first fixing plate 51, the first fixing plate 51 and the second fixing plate 53 are fixedly connected through a plurality of bolts 52, the first fixing plate 51 and the second fixing plate 53 are abutted relatively to each other to wrap the thermal power pipeline, and the bolts 52 fix the first fixing plate 51 and the second fixing plate 53 to fix the thermal power pipeline.
Referring to fig. 1, 3 and 4, the sealing mechanism 4 includes a first rubber plate 41, four clamping rings 42, a second rubber plate 43, a latch 44, a sealing groove 45 and four clamping rings 46, the insides of the clamping grooves 3 at two ends of the upper cover plate 1 are respectively connected with two of the clamping rings 46 in a clamping manner, the clamping rings 42 in an arc structure are welded at the tops of the clamping rings 46 at one end of the upper cover plate 1, the clamping rings 42 in an arc structure are welded at the bottom surfaces of the clamping rings 46 at the other end of the upper cover plate 1, the inner side walls of the clamping rings 42 at two ends of the upper cover plate 1 are fixedly connected with the second rubber plates 43 in an arc structure, a plurality of the latch 44 in a triangular prism structure are arranged at the bottom surface edge of one of the second rubber plates 43 and at the top surface edge of the other second rubber plate 43, the insides of the clamping grooves 3 at two ends of the lower cover plate 2 are connected with the other two clamping rings 46 in a clamping manner, the top and the bottom of the clamping ring 46 at the two ends of the lower cover plate 2 are welded with the other two clamping rings 42 in a butt joint way, the inner side walls of the clamping rings 42 at the two ends of the lower cover plate 2 are fixedly connected with the first rubber plate 41, wherein the sealing groove 45 is opened at the top edge of the first rubber plate 41 and at the bottom edge of the other first rubber plate 41, latch 44 block in the inside of seal groove 45, upper cover plate 1 with lower cover plate 2 is fixed to be accomplished will snap ring 46 block in the inside of draw-in groove 3 has realized first rubber slab 41 second rubber slab 43 to heating power pipeline with upper cover plate 1 the sealing of lower cover plate 2 will latch 44 block in the inside of seal groove 45 has realized will first rubber slab 41 with the connection of second rubber slab 43 avoids the air inlet.
Referring to fig. 1, the supporting mechanism 6 includes a fixing base 61, a rotating shaft 62, a connecting column 63, a screw 64, a connecting seat 65, a rotating pin 66, a movable plate 67, and a base plate 68, the fixing seat 61 is welded at one half of the side wall of the lower cover plate 2, the connecting column 63 is rotatably connected to the inside of the fixing seat 61 through the rotating shaft 62, the bottom threaded connection of spliced pole 63 the screw rod 64, the bottom welding of screw rod 64 connecting seat 65, bottom open-ended fly leaf 67 pass through swivel pin 66 rotate connect in the bottom of connecting seat 65, the top is the arc structure the bottom welding cross-section of fly leaf 67 is "T" shape structure chassis 68 rotates screw rod 64 realizes adjusting right the fixed height of lower apron 2 can be right according to the topography of difference lower apron 2 is fixed to fixed heating power pipeline.
Referring to fig. 1, 3 and 4, the widths of the first rubber plate 41 and the second rubber plate 43 are greater than the distance from the inner side wall of the collar 42 to the inner side walls of the upper cover plate 1 and the lower cover plate 2, the diameters of the first rubber plate 41 and the second rubber plate 43 are equal, the sealing of the first rubber plate 41 and the second rubber plate 43 to the thermal pipeline is increased, and the heat preservation effect is increased.
Referring to fig. 1, the inner diameters of the upper cover plate 1 and the lower cover plate 2 are equal, and the distances from the fixing seat 61 to the two ends of the lower cover plate 2 are equal, so that the fixing seat 61 has a supporting effect on the lower cover plate 2, and a thermal pipeline is protected.
The working principle of the energy-saving support for the heat transfer pipeline provided by the invention is as follows:
firstly, the upper cover plate 1 and the lower cover plate 2 with arc-shaped side walls are relatively clamped at the joints of two thermal power pipelines, the first fixing plate 51 is fixedly connected with the first fixing plate 53 through the bolts 52 and extends into the second fixing plate 53, so that the upper cover plate 1 and the lower cover plate 2 are fixed on the surfaces of the thermal power pipelines through the first fixing plate 51 and the second fixing plate 53, the defect that the joints of the two thermal power pipelines cannot be fixed is overcome, the thermal power pipelines are abutted by the rigid plate 72 with triangular cross sections on the inner side walls of the upper cover plate 1 and the lower cover plate 2 while the upper cover plate 1 and the lower cover plate 2 are fixed on the thermal power pipelines, on one hand, the fixation of the thermal power pipelines is realized, on the other hand, the contact area with the thermal power pipelines is reduced, and the reduction of the thermal insulation effect of the thermal power pipelines due to the loss of heat is avoided, energy is saved; then, the retainer ring 42 is clamped inside the four clamping grooves 3 through the retainer ring 42, so that the first rubber plate 41 and the second rubber plate 43 are further attached to the side walls of the heat distribution pipeline, and then the first rubber plate 41 and the second rubber plate 43 are fixed together through the clamping teeth 44 and the sealing groove 45, so that the heat distribution pipeline between the upper cover plate 1 and the lower cover plate 2 is sealed, and heat loss is reduced; finally, the screw 64 is rotated according to the terrain to fix the base plate 68 on the ground through screws, and the lower cover plate 2 can be fixed in an all-around manner due to the fact that the connecting column 63 is rotatably connected with the lower cover plate 2 through the rotating shaft 62, so that the fixing support for the thermal pipeline of a person is achieved.
Compared with the related art, the energy-saving support for the heat transfer pipeline provided by the invention has the following beneficial effects:
the invention provides an energy-saving support for a heat delivery pipeline, wherein the side walls of an upper cover plate 1 and a lower cover plate 2 are both arc-shaped structures, the cross sections of the upper cover plate 1 and the lower cover plate 2 are circular after being fixed by a first fixing plate 51 and a second fixing plate 53, the fixed support of joints of two heat delivery pipelines is realized, the inner side walls of the upper cover plate 1 and the lower cover plate 2 are fixedly connected with fixing strips 71 at equal intervals, one ends of the fixing strips 71, which are far away from the upper cover plate 1, are fixedly connected with a caustic board 72 with a triangular cross section, on the other hand, the contact area with the heat delivery pipeline is reduced, the heat preservation effect of the heat delivery pipeline is prevented from being reduced due to heat loss, and energy is saved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. An energy-saving support for a heat transfer pipeline is characterized by comprising:
an upper cover plate (1);
a lower cover plate (2); the fixing mechanism (5) is arranged on the opposite side surfaces of the upper cover plate (1) with the arc-shaped side surface and the lower cover plate (2) with the arc-shaped side surface, and the upper cover plate (1) is fixedly connected with the lower cover plate (2) through the fixing mechanism (5);
the energy-saving mechanism (7) is installed on the inner side walls of the upper cover plate (1) and the lower cover plate (2), the energy-saving mechanism (7) comprises fixing strips (71) and a maintaining plate (72), the fixing strips (71) with inverted horn-shaped structures on the inner side walls of the upper cover plate (1) and the lower cover plate (2) are welded at equal intervals, and the maintaining plate (72) with triangular cross sections is fixedly connected to the side surfaces of a plurality of fixing strips (71) on the inner side walls of the upper cover plate (1) and the lower cover plate (2);
the clamping grooves (3) are formed in the two ends of the upper cover plate (1) and the two ends of the lower cover plate (2);
the sealing mechanism (4) comprises a first rubber plate (41), a clamping ring (42), a second rubber plate (43), clamping teeth (44), a sealing groove (45) and clamping rings (46), wherein the first rubber plate (41) and the second rubber plate (43) are respectively provided with two clamping rings (42) and four clamping rings (46), the insides of the clamping grooves (3) at the two ends of the upper cover plate (1) are respectively clamped and connected with two clamping rings (46), the clamping rings (42) which are of arc structures are welded at the tops of the clamping rings (46) at one end of the upper cover plate (1), the clamping rings (42) which are of arc structures are welded at the bottom surfaces of the clamping rings (46) at the other end of the upper cover plate (1), and the inner side walls of the clamping rings (42) at the two ends of the upper cover plate (1) are fixedly connected with the second rubber plates (43) which are of arc structures, a plurality of latch teeth (44) in a triangular prism structure are arranged at the edge of the bottom surface of one second rubber plate (43) and the edge of the top surface of the other second rubber plate (43), the inner parts of the clamping grooves (3) at the two ends of the lower cover plate (2) are clamped and connected with the other two clamping rings (46), the top and the bottom of the clamping rings (46) at the two ends of the lower cover plate (2) are butt-welded with the other two clamping rings (42), the inner side walls of the clamping rings (42) at the two ends of the lower cover plate (2) are fixedly connected with the first rubber plate (41), a plurality of sealing grooves (45) are formed at the edge of the top of the first rubber plate (41) and the edge of the bottom of the other first rubber plate (41), and the latch teeth (44) are clamped inside the sealing grooves (45);
and the supporting mechanism (6) is rotationally connected to the side wall of the lower cover plate (2).
2. The energy-saving support for heat transfer pipelines according to claim 1, wherein the fixing mechanism (5) comprises a first fixing plate (51), bolts (52) and a second fixing plate (53), the first fixing plate (51) with an arc-shaped structure relative to the welding side surface is located at the side wall edge of the upper cover plate (1) close to the lower cover plate (2), the second fixing plate (53) with an arc-shaped structure relative to the welding side surface is located at the side wall edge of the lower cover plate (2) close to the first fixing plate (51), and the first fixing plate (51) and the second fixing plate (53) are fixedly connected through a plurality of bolts (52).
3. The energy-saving support for heat transfer pipelines according to claim 1, wherein the support mechanism (6) comprises a fixed seat (61), a rotating shaft (62), a connecting column (63), a screw rod (64), a connecting seat (65), a rotating pin (66), a movable plate (67), and a chassis (68), the fixing seat (61) is welded at one half of the side wall of the lower cover plate (2), the connecting column (63) is rotatably connected to the inside of the fixed seat (61) through the rotating shaft (62), the bottom threaded connection of spliced pole (63) screw rod (64), the bottom welding of screw rod (64) connecting seat (65), bottom open-ended fly leaf (67) pass through swivel pin (66) rotate connect in the bottom of connecting seat (65), the top is the arc structure the bottom welding cross-section of fly leaf (67) is the structure of "T" shape chassis (68).
4. The heat transfer pipeline economizer support of claim 1, wherein the widths of the first rubber plate (41) and the second rubber plate (43) are larger than the distance from the inner side wall of the collar (42) to the inner side walls of the upper cover plate (1) and the lower cover plate (2), and the diameters of the first rubber plate (41) and the second rubber plate (43) are equal.
5. The heat transfer pipeline energy-saving support seat as claimed in claim 3, wherein the inner diameters of the upper cover plate (1) and the lower cover plate (2) are equal, and the distances from the fixed seat (61) to the two ends of the lower cover plate (2) are equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811465143.4A CN109611651B (en) | 2018-12-03 | 2018-12-03 | Energy-saving support for heat transfer pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811465143.4A CN109611651B (en) | 2018-12-03 | 2018-12-03 | Energy-saving support for heat transfer pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109611651A CN109611651A (en) | 2019-04-12 |
| CN109611651B true CN109611651B (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811465143.4A Active CN109611651B (en) | 2018-12-03 | 2018-12-03 | Energy-saving support for heat transfer pipeline |
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| CN (1) | CN109611651B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111686424A (en) * | 2020-05-31 | 2020-09-22 | 国网河北省电力有限公司元氏县供电分公司 | Novel portable electric power construction is with stepping on pole ware |
| CN112179448A (en) * | 2020-09-30 | 2021-01-05 | 湖南常德牌水表制造有限公司 | Anti-dismounting and anti-theft device for water meter |
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| CN2418329Y (en) * | 2000-03-28 | 2001-02-07 | 周明刚 | Tube-support having heat-insulation block |
| CN202171099U (en) * | 2011-01-31 | 2012-03-21 | 中国石油化工集团公司 | Vertically oriented and hanging bracket type cool insulation pipe bracket |
| EP2549167A1 (en) * | 2011-07-16 | 2013-01-23 | Secura Services AG | Thermally insulating pipe clamp |
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| Publication number | Publication date |
|---|---|
| CN109611651A (en) | 2019-04-12 |
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