CN103894791A - Technology for manufacturing heat transfer enhancing component in heat exchange tube provided with heat transfer enhancing component - Google Patents
Technology for manufacturing heat transfer enhancing component in heat exchange tube provided with heat transfer enhancing component Download PDFInfo
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- CN103894791A CN103894791A CN201410056674.3A CN201410056674A CN103894791A CN 103894791 A CN103894791 A CN 103894791A CN 201410056674 A CN201410056674 A CN 201410056674A CN 103894791 A CN103894791 A CN 103894791A
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- pipe
- heat transfer
- compo pipe
- grinding
- grinding tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
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Abstract
The invention discloses a technology for manufacturing a heat transfer enhancing component in a heat exchange tube provided with the heat transfer enhancing component. The technology comprises the steps of deposit welding and grinding. The step of deposit welding is conducted through a deposit welding device, and the step of grinding is conducted through a grinding device. The deposit welding device comprises a console, a laser power supply, a process gas control cabinet, an electrical and electronic control cabinet, a laser head, a drive chuck, a powder feeder, a walking device, a middle bracket and a bracket. The grinding device comprises a rotating device, a cooling liquid conveying device, a grinding tool rotating and driving device, a grinding brush with abrasive materials, a rotating rod and a connecting rod.
Description
Technical field
The present invention relates to field field of heat exchange equipment, in particular to enhanced heat transfer component manufacturing process in a kind of pipe of the heat exchanger tube with enhanced heat transfer component.
Background technology
In pyrolysis furnace, other heating furnace and heat transmission equipment, there is the situation that may deposit impurity in the medium of heating, easily coking or fluid have thicker laminar flow layer in flowing, there is the defects such as the thermal efficiency is not high, tube wall coking, this just requires heat exchanger tube to have higher heat transfer property, and requires medium in pipe to try one's best evenly along the temperature of caliber direction.Therefore for strengthening the heat transfer effect of heat exchanger tube, inside pipe wall adopts the heat exchanger tube with enhanced heat transfer component.There is at present plum tube, there is the cracking tube of helical fin and strengthen twisted slice tube etc.
Interior plum blossom boiler tube, its boiler tube inwall rolls out the straight fins of the plum blossom-shaped with some, and fin can effectively increase the specific area of boiler tube heat exchange, thereby increases the caloric receptivity of boiler tube.But because the manufacturing process of this boiler tube is rolling boiler tube, quincunx fin and boiler tube are a roll forming, therefore make the structure of boiler tube, the shape of fin be restricted.
A kind of cracking tube with helical fin is provided in prior art, and fin is formed on the inner surface of pipe and with respect to the axis of pipe, and is arranged in discretely on one or more helical trajectories.Fin, for stirring pipe inner fluid, promotes that heat is transferred on fluid effectively.But because pipe inner fin tilts with respect to the axis of pipe, and distribute twist, therefore the pressure loss is larger.If there is the situation that may deposit impurity for managing interior medium, inevitably cause inside pipe wall fouling, not easy to clean and maintenance.This pipe adopts continuous heap welding method, and caloric value strengthens, and in manufacturing process, mother metal is had to certain diluting effect, thereby has influence on the mechanical performance of mother metal.
A kind of heat exchanger tube with strengthening twisted sheet is also provided in prior art, this strengthening twisted sheet adopts static casting technique to be made, compared with the boiler tube of centrifugal casting, its metal grain is relatively thick, institutional framework is fine and close not, the particularly centrifugal casting furnace tube lower than equivalent material in high temperature creep strength value, and therefore its service life is lower than boiler tube, and the butt weld amount of the boiler tube that this structure increases, brings certain risk to the use of boiler tube.
Summary of the invention
The invention provides a kind of interior enhanced heat transfer component manufacturing process of pipe of the heat exchanger tube with enhanced heat transfer component, the problems such as the heat exchange efficiency existing in prior art is not high in order to overcome, the easy coking of tube wall.
For achieving the above object, the invention provides a kind of interior enhanced heat transfer component manufacturing process of pipe of the heat exchanger tube with enhanced heat transfer component, manufacturing process comprises surfacing link and grinds link, surfacing link realizes by coating soldering equipment, grind link and realize by milling apparatus, coating soldering equipment comprises console, Laser Power Devices, process gas switch board, Electrical and Electronic switch board, laser head, drive chuck, powder feeder, running gear, intermediate bracket and bracket; Milling apparatus comprises whirligig, cooling fluid conveying device, grinding tool rotating driving device, band abrasive lapping brush, bull stick and connecting rod;
Manufacturing process comprises the following steps:
With the complete compo pipe inwall of acetone surface cleaning, and be dried to passing into compressed air in compo pipe, and one end of dried compo pipe be arranged on drive chuck to its other end bracket support;
Laser head is arranged on running gear, by controlling running gear, laser head is imported to compo pipe, and the surfacing nozzle of laser head is adjusted to the original position of setting, wherein, Laser Power Devices are connected with laser head, laser head is furnished with water-cooling system, before surfacing, the cooling water valve of water-cooling system is opened and is kept certain pressure;
Alloy powder is mixed by a certain percentage and packed in the powder feeding tank of powder feeder with agglutinant, open year powder gas valve of powder feeder, carry powder gas flow mixed powder for alloy be delivered to the surfacing nozzle of laser head by the control of process gas switch board, wherein, the carrier pipe of powder feeder is connected with laser head;
Position, shape and size according to the enhanced heat transfer component that will form that pre-enters console in compo pipe, control the circumferential movement of drive chuck and the axially-movable of running gear, and surfacing nozzle is at the inner convex solder joint that forms of compo pipe;
The first end of the compo pipe that forms convex solder joint is clamped on the chuck of whirligig, its second end is fixed on the bracket of cooling fluid conveying device, stainless steel ball bearing is equipped with in cooling fluid conveying device inside, and compo pipe is that taper sealing contacts with the bracket of cooling fluid conveying device;
By grinding tool rotating driving device, the connecting rod being connected with bull stick is moved to the first end of compo pipe, at least one is arranged on the connecting rod of grinding tool rotating driving device with abrasive lapping brush, be wherein with abrasive lapping brush to be made by grinding-material and brush silk;
Start whirligig and grinding tool rotating driving device, whirligig drives compo pipe, grinding tool rotating driving device drives abrasive brush, both move toward one another, alloy pipe convex solder joint grinds, and then by grinding tool whirligig drive connecting rod according to default feed from the first end of compo pipe to the second end motion, in compo pipe, enhanced heat transfer component is ground;
Wherein, starting whirligig and grinding tool rotating driving device while clockwise or in rotating counterclockwise, starting cooling fluid conveying device, cooling fluid is delivered in compo pipe by setting flow set pressure, wash away grinding the abrasive material producing, and carry out cooling to polish-brush process.
Optionally, the chemical composition of solder joint that compo pipe inwall forms is identical with the chemical composition of compo pipe, and dilution rate is not more than 1%.
Optionally, the degree of turning of whirligig is 15～30 turn/min, and the rotating speed of grinding tool rotating driving device is 160～240 turn/min, and it is 2mm/min that grinding tool rotating driving device drives the feed of connecting rod.
Optionally, the flow of cooling fluid conveying device conveying cooling fluid is 25～35m
3/ min, pressure is 1MPa.
Optionally, after grinding, the fineness of compo pipe inwall reaches more than 3.2 microns.
In the above-described embodiments, by the laser cladding technology of based semiconductor optical fiber laser, can realize fast the manufacture of enhanced heat transfer component in pipe, there is thereby realize the heat exchanger tube that strengthens heat-transfer effect, reduces inside pipe wall fouling; And then utilize combination material to brush and high temperature alloy pipes relative rotary motion, the convex solder joint that high temperature alloy inside pipe wall surfacing is formed carries out polish-brush, by the oxide removal in high temperature alloy pipes, and high temperature alloy inside pipe wall is polished, the fineness that improves tube wall, roughness can reach more than 3.2 microns.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the console schematic diagram of the laser coating soldering equipment of one embodiment of the invention;
Fig. 2 is the Laser Power Devices schematic diagram of the laser coating soldering equipment of one embodiment of the invention;
Fig. 3 is the process gas switch board schematic diagram of the laser coating soldering equipment of one embodiment of the invention;
Fig. 4 is the Electrical and Electronic switch board schematic diagram of the laser coating soldering equipment of one embodiment of the invention;
Fig. 5 is the agent structure schematic diagram of the laser coating soldering equipment of one embodiment of the invention;
Fig. 6 is the powder feeder schematic diagram of the laser coating soldering equipment of one embodiment of the invention;
Fig. 7 be one embodiment of the invention for grinding the milling apparatus schematic diagram of compo pipe convex solder joint.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not paying the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the console schematic diagram of the laser coating soldering equipment of one embodiment of the invention; Fig. 2 is the Laser Power Devices schematic diagram of the laser coating soldering equipment of one embodiment of the invention; Fig. 3 is the process gas switch board schematic diagram of the laser coating soldering equipment of one embodiment of the invention; Fig. 5 is the agent structure schematic diagram of the laser coating soldering equipment of one embodiment of the invention; Fig. 6 is the powder feeder schematic diagram of the laser coating soldering equipment of one embodiment of the invention.As shown in Figure 5, this laser coating soldering equipment comprises: console 1, Laser Power Devices 2, process gas switch board 3, laser head 5, drive chuck 6, powder feeder 7, running gear 8, intermediate bracket 10 and bracket 11, wherein:
Drive chuck 6 is for arranging one end of compo pipe 9, and bracket 11 is for supporting the other end of compo pipe 9;
Console 1 is connected with running gear 8 with drive chuck 6 respectively, controls the circumferential movement of drive chuck 6 and the axially-movable of running gear 8.
Fig. 4 is the Electrical and Electronic switch board schematic diagram of the laser coating soldering equipment of one embodiment of the invention; The binding post of console, laser head, Laser Power Devices, running gear and drive chuck is arranged in Electrical and Electronic switch board 4, to realize quick, accurate, stable, safe process.
When specific implementation, console can be led the industrial computer operation and control system of wearing touch-screen, and parameter input, setting and program management all realize by touch-screen.The operation of console device itself is to implement by button.In industrial computer, can store 500 above spraying parameters, it is also equipped with USB interface.Laser Power Devices adopt semiconductor laser system.
For example, laser head is furnished with water cooling plant, before surfacing, the cooling water valve of water cooling plant is opened and is kept certain pressure.
For example, above-mentioned year powder gas can adopt argon gas.
Above-described embodiment, by base laser cladding solder technology, can be realized the manufacture of enhanced heat transfer component in pipe fast, has thereby realize the heat exchanger tube that strengthens heat-transfer effect, reduces inside pipe wall fouling.
Fig. 7 be one embodiment of the invention for grinding the milling apparatus schematic diagram of compo pipe convex solder joint.As shown in the figure, this milling apparatus comprises: whirligig 11, cooling fluid conveying device 13, grinding tool rotating driving device 14, band abrasive lapping brush 15, bull stick 17 and connecting rod 18, wherein, the first end of bull stick 17 is connected with grinding tool rotating driving device 14, grinding tool rotating driving device 14 drives bull stick 17 circumferential and axial motions, the second end of bull stick 17 be connected with the first end of connecting rod 18 (as being threaded), cooling fluid conveying device 13 is arranged on the junction of bull stick 17 and connecting rod 18, on whirligig 11, be provided with chuck, chuck is for clamping the first end A of the compo pipe 12 with convex solder joint, the second end B of compo pipe 12 is arranged in taking over a business of cooling fluid conveying device 13, cooling fluid conveying device 13 inside are provided with bearing (as stainless steel ball bearing), taking over a business of compo pipe 12 and cooling fluid conveying device 13 contacts for taper sealing, at least one band abrasive lapping brush 15 is arranged on connecting rod, in the time that butt welding point is ground, by grinding tool rotating driving device 14, connecting rod 18 is moved forward to the position, A end of compo pipe 12, whirligig 11 and grinding tool rotating driving device 14 clockwise or rotate counterclockwise simultaneously, driving compo pipe 12 and at least one band abrasive lapping brush 15 to rotate in opposite directions alloy pipe 12 convex solder joints grinds, form enhanced heat transfer component.
In the specific implementation, above-mentioned band abrasive lapping brush is made up of grinding-material and brush silk.In the time preparing abrasive lapping brush, selected grinding-material and the combination of brush silk are prepared.In a specific embodiment, abrasive lapping is brushed with two kinds of specifications:
with
,
abrasive lapping brush is contained in the root of connecting rod,
abrasive lapping brush is arranged on
after abrasive lapping brush.
For example, in the time grinding, start whirligig, angular speed is 18 turn/min, and direction of rotation is for turning clockwise; Start grinding tool rotating driving device, direction of rotation is that rotating speed is 180 turn/min clockwise, after grinding tool rotating driving device starts, then the running gear of opening grinding tool rotating driving device, feed is 2mm/min; And start cooling fluid conveying device, if flow is 25m
3/ min, pressure is 1MPa, the abrasive material of grinding is washed away, and polish-brush is played to cooling effect.
In the above-described embodiments, utilize combination material brush and high temperature alloy pipes relative rotary motion, the convex solder joint that high temperature alloy inside pipe wall surfacing is formed carries out polish-brush, by the oxide removal in high temperature alloy pipes, and high temperature alloy inside pipe wall is polished, the fineness that improves tube wall, roughness can reach more than 3.2 microns.
Below to adopt above-mentioned laser coating soldering equipment and milling apparatus manufacture to there is the interior enhanced heat transfer component manufacturing process of pipe of the heat exchanger tube of enhanced heat transfer component, manufacturing process comprises surfacing link and grinds link, surfacing link realizes by above-mentioned coating soldering equipment, grind link and realize by above-mentioned milling apparatus, manufacturing process comprises the following steps:
With the complete compo pipe inwall of acetone surface cleaning, and be dried to passing into compressed air in compo pipe, and one end of dried compo pipe be arranged on drive chuck to its other end bracket support;
Laser head is arranged on running gear, by controlling running gear, laser head is imported to compo pipe, and the surfacing nozzle of laser head is adjusted to the original position of setting, wherein, Laser Power Devices are connected with laser head, laser head is furnished with water-cooling system, before surfacing, the cooling water valve of water-cooling system is opened and is kept certain pressure;
Alloy powder is mixed by a certain percentage and packed in the powder feeding tank of powder feeder with agglutinant, open year powder gas valve of powder feeder, carry powder gas flow mixed powder for alloy be delivered to the surfacing nozzle of laser head by the control of process gas switch board, wherein, the carrier pipe of powder feeder is connected with laser head;
Position, shape and size according to the enhanced heat transfer component that will form that pre-enters console in compo pipe, control the circumferential movement of drive chuck and the axially-movable of running gear, and surfacing nozzle is at the inner convex solder joint that forms of compo pipe;
The first end of the compo pipe that forms convex solder joint is clamped on the chuck of whirligig, its second end is fixed in taking over a business of cooling fluid conveying device, stainless steel ball bearing is equipped with in cooling fluid conveying device inside, and taking over a business of compo pipe and cooling fluid conveying device contacts for taper sealing;
By grinding tool rotating driving device, the connecting rod being connected with bull stick is moved to the first end of compo pipe, at least one is arranged on the connecting rod of grinding tool rotating driving device with abrasive lapping brush, be wherein with abrasive lapping brush to be made by grinding-material and brush silk;
Start whirligig and grinding tool rotating driving device, driving compo pipe and at least one band abrasive lapping brush to rotate in opposite directions alloy pipe convex solder joint grinds, and then by grinding tool whirligig drive connecting rod according to default feed from the first end of compo pipe to the second end motion, in compo pipe, form enhanced heat transfer component;
Wherein, starting whirligig and grinding tool rotating driving device while clockwise or in rotating counterclockwise, starting cooling fluid conveying device, cooling fluid is delivered in compo pipe by setting flow set pressure, wash away grinding the abrasive material producing, and carry out cooling to polish-brush process.
For example, the chemical composition of solder joint that compo pipe inwall forms is identical with the chemical composition of compo pipe, and dilution rate is not more than 1%.In the specific implementation, can be by welding be optimized by the chemical composition of metal dust, make its chemical composition basic identical with compo pipe, and make the solder joint chemical composition dilution rate after welding be not more than 1%, guarantee that the mechanical performance of pipe convex meets the requirement of design.
For example, the degree of turning of whirligig is 15～30 turn/min, and the rotating speed of grinding tool rotating driving device is 160～240 turn/min, and it is 2mm/min that grinding tool rotating driving device drives the feed of connecting rod.
For example, the flow of cooling fluid conveying device conveying cooling fluid is 25～35m
3/ min, pressure is 1MPa.
For example, after grinding, the fineness of compo pipe inwall reaches more than 3.2 microns.The welding slag, the oxide skin etc. that after deposited, produce at inside pipe wall, the special brush of taking turns that contains abrasive material by use, polishes, polishing, makes fineness reach 3.2 microns or more smooth.
In the above-described embodiments, by based on laser cladding solder technology, can realize fast the manufacture of enhanced heat transfer component in pipe, there is thereby realize the heat exchanger tube that strengthens heat-transfer effect, reduces inside pipe wall fouling; And then utilize combination material to brush and high temperature alloy pipes relative rotary motion, the convex solder joint that high temperature alloy inside pipe wall surfacing is formed carries out polish-brush, by the oxide removal in high temperature alloy pipes, and high temperature alloy inside pipe wall is polished, the fineness that improves tube wall, roughness can reach more than 3.2 microns.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
One of ordinary skill in the art will appreciate that: the module in the device in embodiment can be described and be distributed in the device of embodiment according to embodiment, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into multiple submodules.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record previous embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.
Claims (5)
1. one kind has the interior enhanced heat transfer component manufacturing process of pipe of the heat exchanger tube of enhanced heat transfer component, it is characterized in that, described manufacturing process comprises surfacing link and grinds link, described surfacing link realizes by coating soldering equipment, described grinding link realizes by milling apparatus, and described coating soldering equipment comprises console, Laser Power Devices, process gas switch board, Electrical and Electronic switch board, laser head, drive chuck, powder feeder, running gear, intermediate bracket and bracket; Described milling apparatus comprises whirligig, cooling fluid conveying device, grinding tool rotating driving device, band abrasive lapping brush, bull stick and connecting rod;
Described manufacturing process comprises the following steps:
With the complete compo pipe inwall of acetone surface cleaning, and be dried to passing into compressed air in described compo pipe, and one end of dried described compo pipe be arranged on described drive chuck to the described bracket support of its other end;
Described laser head is arranged on described running gear, by controlling described running gear, described laser head is imported to described compo pipe, and the surfacing nozzle of described laser head is adjusted to the original position of setting, wherein, described Laser Power Devices are connected with described laser head, described laser head is furnished with water-cooling system, before surfacing, the cooling water valve of described water-cooling system is opened and is kept certain pressure;
Alloy powder is mixed by a certain percentage and packed in the powder feeding tank of described powder feeder with agglutinant, open year powder gas valve of described powder feeder, carry powder gas flow mixed powder for alloy be delivered to the surfacing nozzle of described laser head by the control of described process gas switch board, wherein, the carrier pipe of described powder feeder is connected with described laser head;
Position, shape and size according to the enhanced heat transfer component that will form that pre-enters described console in described compo pipe, control the circumferential movement of described drive chuck and the axially-movable of described running gear, described surfacing nozzle is at the inner convex solder joint that forms of described compo pipe;
The first end of the described compo pipe that forms convex solder joint is clamped on the chuck of described whirligig, its second end is fixed in taking over a business of described cooling fluid conveying device, stainless steel ball bearing is equipped with in described cooling fluid conveying device inside, and described compo pipe is that taper sealing contacts with the bracket of described cooling fluid conveying device;
By described grinding tool rotating driving device, the described connecting rod being connected with described bull stick is moved to the first end of described compo pipe, at least one is describedly arranged on the connecting rod of described grinding tool rotating driving device with abrasive lapping brush, and wherein said band abrasive lapping brush is made up of grinding-material and brush silk;
Start described whirligig and described grinding tool rotating driving device, described whirligig drives described compo pipe, described grinding tool rotating driving device drives described band abrasive lapping brush, both move toward one another, described compo pipe convex solder joint is ground, and then by described grinding tool whirligig drive described connecting rod according to default feed from the first end of described compo pipe to the second end motion, in described compo pipe, form enhanced heat transfer component;
Wherein, starting described whirligig and described grinding tool rotating driving device simultaneously clockwise or in rotating counterclockwise, start described cooling fluid conveying device, cooling fluid is delivered in described compo pipe by setting flow set pressure, wash away grinding the abrasive material producing, and carry out cooling to polish-brush process.
2. enhanced heat transfer component manufacturing process in pipe according to claim 1, is characterized in that, the chemical composition of solder joint that described compo pipe inwall forms is identical with the chemical composition of described compo pipe, and dilution rate is not more than 1%.
3. enhanced heat transfer component manufacturing process in pipe according to claim 1, it is characterized in that, the degree of turning of described whirligig is 15～30 revs/min, the rotating speed of described grinding tool rotating driving device is 160～240 revs/min, and it is 2mm/ minute that described grinding tool rotating driving device drives the feed of described connecting rod.
4. enhanced heat transfer component manufacturing process in pipe according to claim 1, is characterized in that, it is 25～35m that described cooling fluid conveying device is carried the flow of cooling fluid
3/ min, pressure is 1MPa.
5. according to enhanced heat transfer component manufacturing process in the pipe described in claim 1-4, it is characterized in that, after grinding, the fineness of described compo pipe inwall reaches more than 3.2 microns.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410056674.3A CN103894791B (en) | 2014-02-19 | 2014-02-19 | Enhanced heat transfer component manufacturing process in the pipe of the heat exchanger tube with enhanced heat transfer component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410056674.3A CN103894791B (en) | 2014-02-19 | 2014-02-19 | Enhanced heat transfer component manufacturing process in the pipe of the heat exchanger tube with enhanced heat transfer component |
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| CN103894791A true CN103894791A (en) | 2014-07-02 |
| CN103894791B CN103894791B (en) | 2016-11-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763529A (en) * | 2020-06-18 | 2020-10-13 | 中国寰球工程有限公司 | Radiation furnace tube |
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| CN2545558Y (en) * | 2002-04-05 | 2003-04-16 | 董久明 | Heat exchanger |
| CN102974985A (en) * | 2012-12-03 | 2013-03-20 | 西安西工大超晶科技发展有限责任公司 | Manufacture method for nuclear power station steam generator heat transfer tube end cap |
| CN203266367U (en) * | 2013-05-20 | 2013-11-06 | 江苏久保联实业有限公司 | High-temperature alloy inward-convex tube polishing device |
| CN103542759A (en) * | 2012-07-12 | 2014-01-29 | 中国石油天然气股份有限公司 | Heat exchanging pipe with reinforced heat transfer elements |
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- 2014-02-19 CN CN201410056674.3A patent/CN103894791B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970007306B1 (en) * | 1994-06-01 | 1997-05-07 | 삼성정밀화학 주식회사 | Layout of assembly stand for tubular heat exchangers |
| CN2545558Y (en) * | 2002-04-05 | 2003-04-16 | 董久明 | Heat exchanger |
| CN103542759A (en) * | 2012-07-12 | 2014-01-29 | 中国石油天然气股份有限公司 | Heat exchanging pipe with reinforced heat transfer elements |
| CN102974985A (en) * | 2012-12-03 | 2013-03-20 | 西安西工大超晶科技发展有限责任公司 | Manufacture method for nuclear power station steam generator heat transfer tube end cap |
| CN203266367U (en) * | 2013-05-20 | 2013-11-06 | 江苏久保联实业有限公司 | High-temperature alloy inward-convex tube polishing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111763529A (en) * | 2020-06-18 | 2020-10-13 | 中国寰球工程有限公司 | Radiation furnace tube |
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| CN103894791B (en) | 2016-11-23 |
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Address after: Two road 100012 Beijing city Chaoyang District high tech Industrial Park, No. 1. Patentee after: China Global Engineering Co. Ltd. Patentee after: Jiangsu Jiubaolian Industrial Co., Ltd. Address before: Two road 100012 Beijing city Chaoyang District high tech Industrial Park, No. 1. Patentee before: China Huanqiu Engineering Co. Patentee before: Jiangsu Jiubaolian Industrial Co., Ltd. |
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Effective date of registration: 20210304 Address after: 100120 Xicheng District six paw Kang in Beijing City Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CHINA HUANQIU CONTRACTING & ENGINEERING Co.,Ltd. Patentee after: JIANGSU JIUBAOLIAN INDUSTRY Co.,Ltd. Address before: No.1, Chuangda 2nd Road, Laiguangying hi tech Industrial Park, Chaoyang District, Beijing, 100012 Patentee before: CHINA HUANQIU CONTRACTING & ENGINEERING Co.,Ltd. Patentee before: JIANGSU JIUBAOLIAN INDUSTRY Co.,Ltd. |