CN103753172B - A kind of location of marine low speed diesel engine bellows and installation method - Google Patents
A kind of location of marine low speed diesel engine bellows and installation method Download PDFInfo
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- CN103753172B CN103753172B CN201310731760.5A CN201310731760A CN103753172B CN 103753172 B CN103753172 B CN 103753172B CN 201310731760 A CN201310731760 A CN 201310731760A CN 103753172 B CN103753172 B CN 103753172B
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- flange
- exhaust header
- school
- booster
- bellows
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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
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Exhaust Silencers (AREA)
Abstract
The location of marine low speed diesel engine bellows and an installation method, comprise the steps: 1) make school flange and locating flange, school flange inner diameter is greater than exhaust header mouth of pipe external diameter; 2) the former flange on exhaust header is sliced off; 3) involutory position mark S is in the junction of intermediate support and exhaust header; 4) pull down the connecting bolt of exhaust header and intermediate support, unclamp the connecting bolt of exhaust header and thrust end gripper shoe and free end gripper shoe; 5) jack is used by exhaust header to thrust extreme direction pushing tow one transversal displacement; 6) high-ranking officers' flange is fixed with locating flange and is connected with booster flange, is welded on the mouth of pipe of exhaust header school flange eccentric; 7) lower exhaust header is hung and the polishing school flange that freezes; 8) hang on exhaust header, aim at involutory position mark S, unload locating flange; 9) be connected to obliquely between exhaust header and booster by bellows in the cold state, slant range is transversal displacement.Present invention, avoiding bellows to damage when high load capacity.
Description
Technical field
The present invention relates to the assembly technique of diesel engine, be specifically related to a kind of location and installation method of marine low speed diesel engine bellows, belong to Diesel Engine Technique Field.
Background technology
The exhaust header of marine low speed diesel engine is connected with adopting bellows between booster.Described exhaust header bottom is connected in intermediate support, and the left and right sides is connected in the gripper shoe of thrust end and free end; Described bellows is longitudinally pre-stretched to the length of 256-260mm, and by Flange joint between exhaust header and booster, and bellows, exhaust header and booster lateral shift are 0, and namely their flange keeps axis consistent.
But main frame finds after shop trial and trial voyage or flight, during diesel engine high loaded process, exhaust header is heated and can expands to thrust end, makes bellows two end flanges produce the lateral shift of 5-8mm, thus cause the bellows be connected to wherein to deform, so that damage.
The means to save the situation of prior art is, expands the link bolt hole on exhaust header flange for waist-shaped hole, or uses and have the locating flange of side-play amount to position, but only has 5-8mm due to transverse shift, is difficult to the installation accuracy of guarantee bellows in a conventional method.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of location and installation method of marine low speed diesel engine bellows are provided, by being combined locating flange and school flange, after making exhaust header be arranged on the position of regulation, the center line of its flange is relative to the reserved transversal displacement of the center line of booster flange, thus offset located is carried out to the cold conditions installation of bellows, reach the object preventing the dilatancy of exhaust header from causing bellows to damage when diesel engine high loaded process.
The technical scheme that the present invention solves its technical problem is as follows:
A kind of location of marine low speed diesel engine bellows and installation method, the exhaust header of this marine low speed diesel engine is connected with adopting bellows between booster, described exhaust header bottom is connected with intermediate support, the left and right sides is connected with the gripper shoe of thrust end and free end respectively, it is characterized in that: described location and installation method comprise following concrete steps:
1) make school flange and locating flange, the internal diameter of this school flange is greater than the external diameter of the described exhaust header mouth of pipe, and the upper and lower side distance of this locating flange is 256-260mm;
2) the former flange on described exhaust header is sliced off;
3) involutory position mark is made in the junction of described intermediate support and exhaust header;
4) pull down the connecting bolt of described exhaust header and intermediate support, unclamp the connecting bolt of this exhaust header and thrust end gripper shoe and free end gripper shoe;
5) use jack by described exhaust header to thrust extreme direction pushing tow one transversal displacement, and examine in described involutory position mark place measurement;
6) high-ranking officers' flange is installed on the upper end of described locating flange by bolt, the lower end of this locating flange is connected and fixed on described booster flange, this school flange eccentric is placed on the mouth of pipe of described exhaust header and carries out spot welding location, the distance of described school end face of flange and booster flange end face is measured after cooling, guarantee is within the scope of 256-260mm, then by this locating flange and exhaust header solid welding;
7) connecting bolt of described school flange and locating flange is unloaded, unclamp described jack, unload the connecting bolt of described exhaust header and thrust end gripper shoe and free end gripper shoe simultaneously, described exhaust header is hung down, described school flange is freezed polishing, and magnetic powder inspection is carried out to solder side, ensure weldquality;
8) described exhaust header is hung on, intermediate support is aimed at the involutory position mark of exhaust header junction, the connecting bolt of described exhaust header and intermediate support, free end gripper shoe and thrust end gripper shoe is tightened, described locating flange is unloaded by described booster, now the center line of described exhaust header overlaps with the center line of booster, the center line of described school flange and the centerline offset of booster flange;
9) be individually fixed on described school flange and booster flange by the flange of described bellows upper and lower side in the cold state, thus be connected between described exhaust header and booster obliquely by described bellows, slant range is described transversal displacement.
As further improvement, the difference that described school flange inner diameter is greater than described exhaust header mouth of pipe external diameter is not less than described exhaust header by the transversal displacement of jack pushing tow.
As further improvement, described transversal displacement is 6.5mm.
As further improvement, described locating flange comprises upper flange, lower flange and multiple connecting rod; The center line of described upper flange coaxially overlaps with the center line of lower flange, and the lower surface of the upper surface of this upper flange and lower flange is at a distance of 256-260mm; Described multiple connecting rod is distributed in the surrounding of described upper flange and lower flange equably, and is welded in the side of this upper flange and lower flange, described upper flange and lower flange is coupled together.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention adopts the locate mode of the overall exhaust header movement of jack pushing tow, the transversal displacement of exhaust header can be ensured accurately, thus the lateral offset amount ensureing school flange and booster flange is 5-8mm, has the higher degree of accuracy than original method.
(2) when school flange center line and booster flange centerline offset, bellows is installed, bellows is connected between exhaust header and booster in the cold state obliquely, its slant range is the transversal displacement of jack pushing tow, and this transversal displacement just diesel engine high loaded process time exhaust header to expand the transversal displacement produced, and the incline direction of this bellows is contrary with the deformation direction of exhaust header expanded by heating, therefore, when diesel engine high loaded process, bellows is retracted original position by the dilatancy of exhaust header just, bellows is no longer tilted, thus avoid the damage of bellows.
(3) the present invention is skillfully constructed, easy to operate, and practice effect is obvious, ensure that bellows is working properly when high load capacity.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention.
Fig. 2 is the schematic diagram of school of the present invention flange.
Fig. 3 is the structural representation of locating flange of the present invention.
Fig. 4 is installment state schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further elaborated, but can not limits the scope of the invention with this.
The invention provides a kind of location and installation method of marine low speed diesel engine bellows, refer to Fig. 4, the exhaust header 01 of described marine low speed diesel engine is connected with adopting bellows 03 between booster 02, this exhaust header 01 bottom is connected with intermediate support, and the left and right sides is connected with the gripper shoe of thrust end and free end respectively.
Described location and installation method comprise following concrete steps, refer to Fig. 1:
1) school flange and locating flange is made.
Refer to Fig. 2, the internal diameter d of this school flange is greater than the external diameter of described exhaust header 01 mouth of pipe.
Refer to Fig. 3, described locating flange comprises upper flange 1, lower flange 2 and multiple connecting rod 3; The center line of described upper flange 1 coaxially overlaps with the center line of lower flange 2, and the lower surface of the upper surface of this upper flange 1 and lower flange 2 is at a distance of 256-260mm, and namely the upper and lower side distance of whole locating flange is 256-260mm; Described multiple connecting rod 3(the present embodiment is 4 connecting rods 3) be distributed in the surrounding of described upper flange 1 and lower flange 2 equably, and be welded in the side of this upper flange 1 and lower flange 2, described upper flange 1 is coupled together with lower flange 2.
2) the former flange on described exhaust header 01 is sliced off.
3) rule at the junction marking pen of described intermediate support and exhaust header 01 and make involutory position mark S.
4) pull down described exhaust header 01 and the connecting bolt of intermediate support, unclamp the connecting bolt of this exhaust header 01 and thrust end gripper shoe and free end gripper shoe.
5) use jack by described exhaust header 01 to thrust extreme direction pushing tow one transversal displacement, described transversal displacement is 6.5mm, and examines in described involutory position mark S place's measurement; And the difference that described school flange inner diameter d is greater than described exhaust header 01 mouth of pipe external diameter is not less than described exhaust header 01 by the transversal displacement 6.5mm of jack pushing tow.
6) high-ranking officers' flange is installed on the upper end of described locating flange by bolt, the lower end of this locating flange is connected and fixed on described booster flange, this school flange eccentric is placed on the mouth of pipe of described exhaust header and carries out spot welding location, the distance of described school end face of flange and booster flange end face is measured after cooling, guarantee is within the scope of 256-260mm, then by this locating flange and exhaust header solid welding.
7) connecting bolt of described school flange and locating flange is unloaded, unclamp described jack, unload the connecting bolt of described exhaust header 01 and thrust end gripper shoe and free end gripper shoe simultaneously, described exhaust header 01 is hung down, described school flange is freezed polishing, and magnetic powder inspection is carried out to solder side, ensure weldquality.
8) described exhaust header 01 is hung on, intermediate support is aimed at the involutory position mark S of exhaust header 01 junction, described exhaust header 01 is tightened with the connecting bolt of intermediate support, free end gripper shoe and thrust end gripper shoe, described locating flange is unloaded by described booster 02, now the center line of described exhaust header 01 overlaps with the center line of booster 02, the center line of described school flange and the centerline offset 6.5mm of booster flange.
9) in the cold state the flange of described bellows 03 upper and lower side is individually fixed on described school flange and booster flange, thus described bellows 03 is connected between described exhaust header 01 and booster 02 obliquely, slant range is described transversal displacement 6.5mm.
Above are only preferred embodiment of the present invention, all equivalences done according to the present patent application content change and modify, and all should become the protection domain of patent of the present invention.
Claims (4)
1. the location of a marine low speed diesel engine bellows and installation method, the exhaust header of this marine low speed diesel engine is connected with adopting bellows between booster, described exhaust header bottom is connected with intermediate support, the left and right sides is connected with the gripper shoe of thrust end and free end respectively, it is characterized in that: described location and installation method comprise following concrete steps:
1) make school flange and locating flange, the internal diameter of this school flange is greater than the external diameter of the described exhaust header mouth of pipe, and the upper and lower side distance of this locating flange is 256-260mm;
2) the former flange on described exhaust header is sliced off;
3) involutory position mark is made in the junction of described intermediate support and exhaust header;
4) pull down the connecting bolt of described exhaust header and intermediate support, unclamp the connecting bolt of this exhaust header and thrust end gripper shoe and free end gripper shoe;
5) use jack by described exhaust header to thrust extreme direction pushing tow one transversal displacement, and examine in described involutory position mark place measurement;
6) high-ranking officers' flange is installed on the upper end of described locating flange by bolt, the lower end of this locating flange is connected and fixed on booster flange, this school flange eccentric is placed on the mouth of pipe of described exhaust header and carries out spot welding location, the distance of described school end face of flange and booster flange end face is measured after cooling, guarantee is within the scope of 256-260mm, then by this locating flange and exhaust header solid welding;
7) connecting bolt of described school flange and locating flange is unloaded, unclamp described jack, unload the connecting bolt of described exhaust header and thrust end gripper shoe and free end gripper shoe simultaneously, described exhaust header is hung down, described school flange is freezed polishing, and magnetic powder inspection is carried out to solder side, ensure weldquality;
8) described exhaust header is hung on, intermediate support is aimed at the involutory position mark of exhaust header junction, the connecting bolt of described exhaust header and intermediate support, free end gripper shoe and thrust end gripper shoe is tightened, described locating flange is unloaded by described booster, now the center line of described exhaust header overlaps with the center line of booster, the center line of described school flange and the centerline offset of booster flange;
9) be individually fixed on described school flange and booster flange by the flange of described bellows upper and lower side in the cold state, thus be connected between described exhaust header and booster obliquely by described bellows, slant range is described transversal displacement.
2. the location of marine low speed diesel engine bellows according to claim 1 and installation method, is characterized in that: the difference that described school flange inner diameter is greater than described exhaust header mouth of pipe external diameter is not less than described exhaust header by the transversal displacement of jack pushing tow.
3. the location of marine low speed diesel engine bellows according to claim 2 and installation method, is characterized in that: described transversal displacement is 6.5mm.
4. the location of marine low speed diesel engine bellows according to claim 1 and 2 and installation method, is characterized in that: described locating flange comprises upper flange, lower flange and multiple connecting rod; The center line of described upper flange coaxially overlaps with the center line of lower flange, and the lower surface of the upper surface of this upper flange and lower flange is at a distance of 256-260mm; Described multiple connecting rod is distributed in the surrounding of described upper flange and lower flange equably, and is welded in the side of this upper flange and lower flange, described upper flange and lower flange is coupled together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310731760.5A CN103753172B (en) | 2013-12-26 | 2013-12-26 | A kind of location of marine low speed diesel engine bellows and installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310731760.5A CN103753172B (en) | 2013-12-26 | 2013-12-26 | A kind of location of marine low speed diesel engine bellows and installation method |
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| CN103753172A CN103753172A (en) | 2014-04-30 |
| CN103753172B true CN103753172B (en) | 2016-03-09 |
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| CN201310731760.5A Active CN103753172B (en) | 2013-12-26 | 2013-12-26 | A kind of location of marine low speed diesel engine bellows and installation method |
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| CN105618986B (en) * | 2016-03-22 | 2017-05-03 | 上海中船三井造船柴油机有限公司 | Positioning method used for assembling of supercharger and air pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2153404B2 (en) * | 1971-10-27 | 1975-07-10 | Gutehoffnungshuette Sterkrade Ag, 4200 Oberhausen | Hermetic fitting seal for units projecting into vessels - has chamber with flexible bellows for draining immersion liquid |
| DE4402709C1 (en) * | 1994-01-29 | 1995-04-27 | Abb Patent Gmbh | Device for turning a shaft of a subassembly to be assembled and/or checked |
| CN102380754A (en) * | 2011-05-05 | 2012-03-21 | 金龙精密铜管集团股份有限公司 | Production method of corrugated gas collecting pipeline member for air-conditioner |
| CN102767903A (en) * | 2012-08-13 | 2012-11-07 | 广东万家乐燃气具有限公司 | Corrugated pipe condensation heat exchanger and manufacture method thereof |
| CN102954283A (en) * | 2012-10-29 | 2013-03-06 | 浙江盾安阀门有限公司 | Corrugated tube welding assembly and production method thereof |
-
2013
- 2013-12-26 CN CN201310731760.5A patent/CN103753172B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2153404B2 (en) * | 1971-10-27 | 1975-07-10 | Gutehoffnungshuette Sterkrade Ag, 4200 Oberhausen | Hermetic fitting seal for units projecting into vessels - has chamber with flexible bellows for draining immersion liquid |
| DE4402709C1 (en) * | 1994-01-29 | 1995-04-27 | Abb Patent Gmbh | Device for turning a shaft of a subassembly to be assembled and/or checked |
| CN102380754A (en) * | 2011-05-05 | 2012-03-21 | 金龙精密铜管集团股份有限公司 | Production method of corrugated gas collecting pipeline member for air-conditioner |
| CN102767903A (en) * | 2012-08-13 | 2012-11-07 | 广东万家乐燃气具有限公司 | Corrugated pipe condensation heat exchanger and manufacture method thereof |
| CN102954283A (en) * | 2012-10-29 | 2013-03-06 | 浙江盾安阀门有限公司 | Corrugated tube welding assembly and production method thereof |
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| CN103753172A (en) | 2014-04-30 |
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Effective date of registration: 20200219 Address after: 200120 unit 101 and 201, building 1, No. 88, yanghao Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: China Shipbuilding Marine Power Technology Service Co., Ltd Address before: 200129 Pudong Road, Shanghai, No. 346, building 2851, No. Patentee before: Hudong Heavy Mechine Co., Ltd. |
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