CN203159543U - Wear-resisting structure of easily-washed-out part of direct coal liquefaction device - Google Patents
Wear-resisting structure of easily-washed-out part of direct coal liquefaction device Download PDFInfo
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- CN203159543U CN203159543U CN 201320072883 CN201320072883U CN203159543U CN 203159543 U CN203159543 U CN 203159543U CN 201320072883 CN201320072883 CN 201320072883 CN 201320072883 U CN201320072883 U CN 201320072883U CN 203159543 U CN203159543 U CN 203159543U
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- abrasion
- coal liquefaction
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- direct coal
- liquefaction device
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Abstract
The utility model relates to a wear-resisting structure of an easily-washed-out part of a direct coal liquefaction device. The wear-resisting structure comprises base metal, a fused layer on the base metal and at least one hardened layer at the outermost side. According to the wear-resisting structure of the easily-washed-out part of the direct coal liquefaction device disclosed by the utility model, the difficulties that the long-period operation of a device is restricted due to damages caused by high-temperature oxidization, abrasion, washing, corrosive pitting, cavitation and the like can be avoided; and the abrasion-resisting performance of the surface of the easily-washed-out part is effectively enhanced and the service life of the part is effectively prolonged.
Description
Technical field
The utility model relates to the abrasion-proof structure at the easy erosion of a kind of DCL/Direct coal liquefaction device position.
Background technology
Group of Shenhua Erdos coal oil content processed company has the equipment of the first cover large industrialized DCL/Direct coal liquefaction production oil product in the world.DCL/Direct coal liquefaction technology is by high-temperature and high-pressure hydrogenation, with the solid coal directly change into cleaning be convenient to transport and a kind of advanced person's of the liquid fuel (gasoline, diesel oil, aviation kerosene etc.) that uses or industrial chemicals clean coal technology.Direct coal liquefaction technology worldwide received much concern in recent years.In coal liquefaction craft, coal slurry, hydrogen etc. coexist through high temperature, reacted gas, liquid, solid three phase materials of condition of high voltage under catalyst action, more serious to erosions such as valve, pipeline, pumps, simultaneously scene, many easy erosion positions is quick detachable and volume is bigger, and therefore the abrasion-proof structure at the easy erosion of a kind of DCL/Direct coal liquefaction device position particularly important that just seems is provided.
The utility model content
At the deficiencies in the prior art, the purpose of this utility model provides the abrasion-proof structure at the easy erosion of a kind of DCL/Direct coal liquefaction device position.
The abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device of the present utility model position, wherein, described abrasion-proof structure comprises the fused layer on mother metal, the described mother metal, and the outermost hardened layer of one deck at least.
Preferably, has transition layer on the described fused layer.
Preferably, the thickness of described fused layer is 1.0～2.0mm; The thickness of described transition layer is 0.8～1.2mm; The thickness in monolayer of described hardened layer is 0.2～1.5mm.
Preferably, the thickness of described fused layer is 1.4～1.6mm; The thickness of described transition layer is 1.0mm; The total thickness of described hardened layer is 1.0～5.0mm.
More preferably, the total thickness of described hardened layer is 1.0～3.0mm.
Preferably, described mother metal is made by carbon steel or stainless steel.
Preferably, the material of described transition layer is stainless steel.
Preferably, the material of described hardened layer is Wimet.
Preferably, described easy erosion position comprises pipeline, valve, slurries pump case and impeller.
The abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device of the present utility model position can be avoided because of high temperature oxidation, weares and teares, washes away, spot corrosion, cavitation erosion etc. cause a difficult problem of damaging the confining device long-term operation; Effectively strengthen the wear-corrosion resistance on surface, easy erosion position, effectively prolong the work-ing life of parts.
Description of drawings
Fig. 1 is the synoptic diagram of a kind of abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device of the present utility model position; Wherein, described hardened layer is 1 layer.
Fig. 2 is the synoptic diagram of the another kind of abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device of the present utility model position; Wherein, described hardened layer is 3 layers.
Fig. 3 is the synoptic diagram of the another kind of abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device of the present utility model position; Wherein, have described transition layer between described fused layer and the described hardened layer, described hardened layer is 1 layer.
Fig. 4 is the synoptic diagram of the another kind of abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device of the present utility model position; Wherein, have described transition layer between described fused layer and the described hardened layer, described hardened layer is 2 layers.
Reference numeral:
1, mother metal
2, transition layer
3, hardened layer
4, fused layer
Embodiment
The following examples only are used for explaining the utility model, and unrestricted the utility model.
By Fig. 1～4 as can be seen, the abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device of the present utility model position comprises the fused layer 4 on mother metal 1, the described mother metal, the nonessential transition layer 2 on the described fused layer 4, and the outermost hardened layer of one deck at least 3.
Preferably, described mother metal 1 is made by carbon steel or stainless steel.Described stainless steel comprises austenitic stainless steel or Martensite Stainless Steel.
Preferably, described fused layer 4 for described mother metal 1 with identical resurfacing welding material melted by heat and solidify the alloy layer of formation.
Preferably, the material of described transition layer 2 is stainless steel, more preferably austenitic stainless steel.
The abrasion-proof structure at the easy erosion of the utility model DCL/Direct coal liquefaction device position carries out at device field by using technique for overlaying.Concrete steps comprise:
1, at device component scene, easy erosion position and the periphery of described mother metal 1 are cleared up, removed and clean, remove greasy dirt, remove zone of oxidation and the caducous hardened layer on surface;
2, the damaged situation to the former hardened layer of described mother metal 1 and key coat detect, sampling, assay, find out the hardening process that adopts before this and the weak point of material therefor, for this (sclerosis) provides reliability and scientific parameter;
3, according to damaged situation, select for use defect built-up welding that the welding material identical with the material of described mother metal 1 and pulse low temperature technique for overlaying will be bigger to the geometrical dimension that approaches original design requirement and through machining, reconditioning moulding, carry out tempering then, insulation removal stress forms described fused layer 4;
4, if needed, welding transition layer 2 on described fused layer 4, use lf or novel precise plasma surfacing sequence technology according to the concrete structure shape of parts then, one or more layers described hardened layer 3 of position surface overlaying in the needs sclerosis, maintain accordingly then, the processing treatment moulding, until reaching original design and actual motion demanding criteria.
The above-mentioned technology of the abrasion-proof structure at the easy erosion of the utility model DCL/Direct coal liquefaction device position only needs that the position of needs reparation and sclerosis is exposed to the palp degree of welding gun and gets final product, numerous and diverse operation of having avoided common process large-scale pipeline, valve, pump must be disassembled, lifted and transport can be saved a large amount of time and funds.
In addition, the mother metal 1 of the abrasion-proof structure at the easy erosion of the utility model DCL/Direct coal liquefaction device position can also for: the high-temperature high pressure valve in the chemical industry, flange, pipeline, elbow etc. are by the reparation at erosion position and wear-resisting intensive treatment; The big shaft neck of generator, steam turbine, water turbine and oil are worked as, online wear-resisting reparation and the reinforcement of oil sealing position; Roll, grinding roller online and off-line strengthen and repair the reparation of hydraulic support piston rod, outside cylinder, interior circular hole workpiece surface and shock-resistant, anti-extruding hardening treatment; Coal mine scraper, transfer roller middle trough, head, tail, reparation and the reinforcement of coalcutter, development machine cylinder, pick etc.; Various mould repair and reinforcement; Various stirrers stir cutter, the reparation of large-sized low-speed grinder hammerhead and reinforcement.
The basic step that on-the-spot tapered pipeline to the DCL/Direct coal liquefaction device carries out built-up welding is: defect and periphery that the washing away of tapered pipeline internal orifice, burn into cavitation erosion etc. cause are cleared up, removed and clean, remove zone of oxidation and the greasy dirt on surface, test according to damaged situation and analyze the back best material formula of selection and corresponding bead-welding technology parameter; According to damaged situation, select for use the welding material identical with mother metal 1 material to carry out defect built-up welding that pulse low temperature technique for overlaying will be darker to the geometrical dimension that approaches original design requirement and through machining, reconditioning moulding, carry out tempering then, insulation removal stress forms described fused layer 4; After check confirms that above-mentioned operation meets the requirements, carry out accurate built-up welding on the surface, position of needs sclerosis and form described hardened layer 3, after built-up welding is finished, surfacing part is carried out the tempering insulation, remove unrelieved stress, maintenance survives; Mating surface, bonding surface are carried out dimensional precision and the smooth finish requirement that mechanical cutting is machined to design requirements.
The material of mother metal 1 tapered pipeline of described abrasion-proof structure is austenitic stainless steel; The thickness of described fused layer 4 is 1.5mm; The thickness of described hardened layer 3 is 1.5mm, and material is Wimet, and it is 1 layer.
Make the pipeline of damage return to original performance by the reparation to defect, thereby guarantee the normal use of damaged location.
Operation steps is identical with embodiment 1, be described hardened layer 3 be 3 layers; The material of mother metal 1 tapered pipeline of described abrasion-proof structure is carbon steel; The thickness of described fused layer 4 is 1.2mm; The total thickness of described hardened layer 3 is 3mm, and material is Wimet, and it is 3 layers.
Enforcement by multilayer hardened layer 3 guarantees that the hardness at erosive wear position reaches more than the HRC50, thereby strengthens the ability of carbon steel piping opposing erosive wear, guarantees stable use of long period of pipeline.
The basic step that the impeller of on-the-spot chemical grout transferpump to the DCL/Direct coal liquefaction device carries out built-up welding is: according to the technical parameter requirement of device, in conjunction with before problems occured in operation, damaged situation check, sampling, assay, be the formulation of surface overlaying processes complete scheme, reliability and scientific guidance are provided; Mapping each spot size of impeller and drawing; Dirt, plaque, zone of oxidation and small crackle etc. are removed all impurity of impeller surface, demonstrate metalluster.Select for use the welding material identical with mother metal 1 material to adopt defect built-up welding that the sloppy heat bead-welding technology will be darker to the geometrical dimension near original design requirement; This technology can prevent deformable blade, fracture; After the machine-shaping, its physical dimension, gap width must meet original design requirement, reach required quality of fit, form described fused layer 4; Carry out transition layer 2 built-up welding on the basis of described fused layer 4, will guarantee in the weld deposit process that described transition layer 2 is even, smooth, strict control welding current, voltage and built-up welding speed are the built-up welding place mat of hardened layer 3 simultaneously; After check confirmed that above-mentioned operation meets the requirements, the accurate built-up welding of carrying out wear-resisting hardened layer formed described hardened layer 3, after built-up welding is finished, surfacing part was carried out the tempering insulation, removed unrelieved stress, and maintenance survives.Carrying out dynamic and static balance detection by the rotating speed requirement of this equipment proofreaies and correct; By the mounting technology standard, carry out field assembly and debugging to the technological standard requirement in order.
The material of mother metal 1 impeller of described abrasion-proof structure is Martensite Stainless Steel; The thickness of described fused layer 4 is 2.0mm; The thickness of described transition layer 2 is 1.2mm, and material is stainless steel; The thickness of described hardened layer 3 is 1mm, and material is Wimet, and it is 1 layer.
Built-up welding sclerosis back impeller erosion resistance, cavitation, wearing and tearing ability obviously strengthen, owing to adopt the cold cut bead-welding technology to prevent that impeller built-up welding distortion from guaranteeing that geometrical dimension satisfies service requirements, whole mechanical property significantly improves the work-ing life that prolongs whole impeller thereby the built-up welding sclerosis makes the easy damaged position simultaneously.
Operation steps is identical with embodiment 3, be described hardened layer 3 be 2 layers; The material of mother metal 1 tapered pipeline of described abrasion-proof structure is Martensite Stainless Steel; The thickness of described fused layer 4 is 1.6mm; The thickness of described transition layer 2 is 1.2mm, and material is austenitic stainless steel; The total thickness of described hardened layer 3 is 2mm, and material is Wimet, and it is 2 layers.
Abrasion-proof structure obviously increases the net thickness of impeller erosion resistance, cavitation, wearing and tearing, thus further significant prolongation the work-ing life of impeller.
It will be understood by those skilled in the art that the utility model is made some modifications or changed also should be within the utility model claim institute restricted portion.
Claims (9)
1. the abrasion-proof structure at the easy erosion of a DCL/Direct coal liquefaction device position is characterized in that, described abrasion-proof structure comprises the fused layer on mother metal, the described mother metal, and the outermost hardened layer of one deck at least.
2. the abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device according to claim 1 position is characterized in that having transition layer on the described fused layer.
3. the abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device according to claim 2 position is characterized in that, the thickness of described fused layer is 1.0～2.0mm; The thickness of described transition layer is 0.8～1.2mm; The thickness in monolayer of described hardened layer is 0.2～1.5mm.
4. the abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device according to claim 3 position is characterized in that, the thickness of described fused layer is 1.4～1.6mm; The thickness of described transition layer is 1.0mm; The total thickness of described hardened layer is 1.0～5.0mm.
5. the abrasion-proof structure at the easy erosion of DCL/Direct coal liquefaction device according to claim 4 position is characterized in that, the total thickness of described hardened layer is 1.0～3.0mm.
6. according to the abrasion-proof structure at the easy erosion of each described DCL/Direct coal liquefaction device position in the claim 1～5, it is characterized in that described mother metal is made by carbon steel or stainless steel.
7. according to the abrasion-proof structure at the easy erosion of each described DCL/Direct coal liquefaction device position in the claim 1～5, it is characterized in that the material of described transition layer is stainless steel.
8. according to the abrasion-proof structure at the easy erosion of each described DCL/Direct coal liquefaction device position in the claim 1～5, it is characterized in that the material of described hardened layer is Wimet.
9. according to the abrasion-proof structure at the easy erosion of each described DCL/Direct coal liquefaction device position in the claim 1～5, it is characterized in that described easy erosion position comprises pipeline, valve, slurries pump case and impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320072883 CN203159543U (en) | 2013-02-08 | 2013-02-08 | Wear-resisting structure of easily-washed-out part of direct coal liquefaction device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320072883 CN203159543U (en) | 2013-02-08 | 2013-02-08 | Wear-resisting structure of easily-washed-out part of direct coal liquefaction device |
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| CN203159543U true CN203159543U (en) | 2013-08-28 |
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| CN 201320072883 Expired - Lifetime CN203159543U (en) | 2013-02-08 | 2013-02-08 | Wear-resisting structure of easily-washed-out part of direct coal liquefaction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106250572A (en) * | 2015-06-03 | 2016-12-21 | 中国石油天然气股份有限公司 | L-type pipeline erosion rate determines method and device |
-
2013
- 2013-02-08 CN CN 201320072883 patent/CN203159543U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106250572A (en) * | 2015-06-03 | 2016-12-21 | 中国石油天然气股份有限公司 | L-type pipeline erosion rate determines method and device |
| CN106250572B (en) * | 2015-06-03 | 2019-05-07 | 中国石油天然气股份有限公司 | L-type pipeline erosion rate determines method and device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
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| CX01 | Expiry of patent term |