CN106239422A - Pin dismounting method when a kind of steam turbine stator portion set is reprocessed - Google Patents
Pin dismounting method when a kind of steam turbine stator portion set is reprocessed Download PDFInfo
- Publication number
- CN106239422A CN106239422A CN201610648341.9A CN201610648341A CN106239422A CN 106239422 A CN106239422 A CN 106239422A CN 201610648341 A CN201610648341 A CN 201610648341A CN 106239422 A CN106239422 A CN 106239422A
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- China
- Prior art keywords
- pin
- stator portion
- target
- inner sleeve
- steam turbine
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
Pin dismounting method when a kind of steam turbine stator portion set is reprocessed, it relates to a kind of pin dismounting method.Partition board of steam turbine will often find that when returning factory that split alignment pin, owing to, under steam-turbine unit duty, incrustation scale corrosion makes pin be bonded together with clapboard body, is difficult to normal taking-up.The present invention includes step one: labelling and boring work；Step 2: dismantlement work；First L-shaped packing ring is placed on the split of stator portion set through the target pin in step one, overcoat is placed on L-shaped packing ring and is arranged on the first chamfered edge groove up through target pin, inner sleeve being inverted screws in overcoat through this target pin again, head gasket is placed on the end face of inner sleeve, in the thread Pilot hole on target pin being directed at after finally the screw matched with thread Pilot hole being sequentially passed through head gasket and inner sleeve and being tightened in step one；Step 3: rust cleaning and cleaning；Step 4: measure work.The pin that the present invention puts for steam turbine stator portion of choosing.
Description
Technical field
Present invention relates particularly to pin dismounting method when a kind of steam turbine stator portion set is reprocessed.
Background technology
Steam-turbine unit periodically to carry out large repairs, and parts are replaced according to extent of deterioration or depot repair, depot repair
It is frequently encountered the problem that some normal productions did not run into, it is necessary to try every possible means to solve, when its median septum returns factory often
Find that split alignment pin is owing to, under steam-turbine unit duty, incrustation scale corrosion makes pin and clapboard body be bonded in one
Rising, be difficult to normal taking-up, in conventional this situation, pin boring is fallen by lathe boring cutter, is strengthened by pin-and-hole diameter dimension, and will be another
The dividing plate pin-and-hole that half matches, by this larger, joins new pin, and do so adds reprocesses cost, and taking lathe also can affect
The production cycle of new product.
Summary of the invention
It is an object of the invention to provide a kind of steam turbine stator portion set pin dismounting method when reprocessing, with solve steam turbine every
Will often find that during Ban Fan factory split alignment pin due under steam-turbine unit duty, incrustation scale corrosion make pin with every
Plate bulk adhesive together, is difficult to the normal problem taken out.
The present invention solves that above-mentioned technical problem adopts the technical scheme that:
Pin dismounting method when a kind of steam turbine stator portion set is reprocessed, pin dismounting method comprises the following steps:
Step one: labelling and boring work: first take the first half and the lower half reprocessing steam turbine stator portion set apart, one by one
Check the multiple pins at steam turbine stator portion set horizontal flange, from multiple pins, determine what normal operating cannot be taken out
The position of pin one by one labelling as target target pin, choose the exposed portion of a target target pin end face and
Bore a thread Pilot hole on this end face, and carry out tapping with screw die and screw tap；
Step 2: dismantlement work: first L-shaped packing ring is placed in stator portion set through the target pin in step one
In facet, overcoat is placed on L-shaped packing ring and is arranged on the first chamfered edge groove up through target pin, then inner sleeve is inverted
Screw in overcoat through this target pin, head gasket is placed on the end face of inner sleeve, finally will match with thread Pilot hole
Screw sequentially pass through head gasket and inner sleeve after be directed at and be tightened in the thread Pilot hole on the target pin in step one,
After look for one mate open-end wrench with size at the second chamfered edge groove and be placed at the wrench position of inner sleeve, hand-held maintain static, so
After look for one mate open-end wrench with size at the first chamfered edge groove and be placed at the wrench position of overcoat, another hands is the slowest
Slow turn spanner so that inner sleeve rises along axis and drives head gasket and screw to rise simultaneously, can be driven by this target pin
Pulling up, the process of choosing of the target pin that other cannot take out is ibid；
Step 3: rust cleaning and cleaning: wait other stator portion to overlap after other position fixes, to this pin-and-hole and target pin
Outside carries out fine sandpaper and removes floating rust, then corrosion is removed clean with chemical derusting agent, and is carried out with abluent；
Step 4: measure work: treating that target pin is dried, position each to target pin measures, and size meets dress
Join requirement, trial assembly target pin.
The method have the advantages that
1, the operating process of the present invention is simply easy, reprocesses low cost, it is simple to promote on a large scale.
2, the present invention breaks traditions the mode pulled pin, it is possible to carry out the work of choosing of pin on the premise of realizing being not take up lathe
Make.
3, the present invention is without strengthening the pin-and-hole diameter dimension at pin place, it is possible to the chi of the original pin-and-hole of utility
Very little, it is only necessary to the pin chosen out to be eliminated rust and cuts open mill, it is possible to ensure original size of pin.
4, present configuration is reasonable in design and easy to operate, saves the expense of pin of choosing, and simplifies the step of pin of choosing,
It is easy to improve the nail efficiency of pulling pin of staff, is the most also beneficial to lathe and promotes its work efficiency.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the specific purpose tool that the present invention utilizes；
Fig. 2 is Fig. 1 top view；
Fig. 3 is Fig. 1 left view；
Fig. 4 is the profile in Fig. 1 at A-A；
Fig. 5 is the perspective view of the specific purpose tool that the present invention utilizes；
Fig. 6 is the working state schematic representation of the present invention；
Detailed description of the invention
Detailed description of the invention one: combine Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6 and present embodiment, pin dismounting method are described
Comprise the following steps:
Step one: labelling and boring work: first take the first half and the lower half reprocessing steam turbine stator portion set apart, one by one
Check that the multiple pins at 6 horizontal flanges are overlapped in steam turbine stator portion, from multiple pins, determine that normal operating cannot be taken out
Pin position and one by one labelling as target target pin 7, choose the end face of the exposed portion of a target target pin 7
And on this end face, bore a thread Pilot hole 8, and carry out tapping with screw die and screw tap；
Step 2: dismantlement work: first L-shaped packing ring 5 is placed on stator portion set through the target pin 7 in step one
On split, overcoat 4 is placed on L-shaped packing ring 5 and is arranged on the first chamfered edge groove 4-1 up through target pin 7, then will
Inner sleeve 3 is inverted and is screwed in overcoat 4 through this target pin 7, is placed on the end face of inner sleeve 3 by head gasket 2, finally will be with spiral shell
The target pin 7 that the screw 1 that stricture of vagina bottom outlet 8 matches is directed at and is tightened in step one after sequentially passing through head gasket 2 and inner sleeve 3
On thread Pilot hole 8 in, finally look for one mate open-end wrench with size at the second chamfered edge groove 3-4 and be placed on the spanner of inner sleeve 3
Position, hand-held maintains static, and then looks for one mate open-end wrench with size at the first chamfered edge groove 4-1 and be placed on overcoat 4
At wrench position, another hands the most slowly turn spanner so that inner sleeve 3 rises along axis and drives head gasket 2 and screw 1
Rising simultaneously, can be driven by this target pin 7 and pull up, the process of choosing of the target pin 7 that other cannot take out is ibid；
Step 3: rust cleaning and cleaning: wait other stator portion to overlap after other position fixes, to this pin-and-hole and target pin
The 7 outside fine sandpapers that carry out remove floating rust, then corrosion are removed clean with chemical derusting agent, and are carried out with abluent；
Step 4: measure work: treating that target pin 7 is dried, position each to target pin 7 measures, and size meets
Matching requirements, trial assembly target pin 7.
The present invention needs can realize by special instrument in operation, and special instrument includes screw 1, interior
Set 3 and overcoat 4, described inner sleeve 3 is coaxially disposed with overcoat 4, and the outer wall of described inner sleeve 3 is machined with external screw thread, described overcoat 4
The female thread matched with external screw thread it is machined with on inwall, in described inner sleeve 3 is arranged on overcoat 4 and it is threadeded with overcoat 4,
The bottom of described overcoat 4 removably connects with the split of steam turbine stator portion set 6, and the split of steam turbine stator portion set 6 sets
Being equipped with target pin 7, target pin 7 is threaded bottom outlet 8, described screw 1 inserts inner sleeve 3 along the length direction of inner sleeve 3
In, in the bottom of described screw 1 is arranged on the thread Pilot hole 8 of target pin 7 and it is threadeded with thread Pilot hole 8.
Described inner sleeve 3 includes sleeve body 3-1 and plectane 3-2, and described sleeve body 3-1 is vertically arranged, and described sleeve is originally
Being machined with external screw thread on the outer wall of body 3-1, the diameter of described plectane 3-2 is equal with the internal diameter of sleeve body 3-1, described plectane 3-
2 tops being horizontally set on sleeve body 3-1 and the two fixing connection be made as one, described plectane 3-2 centrally along its thickness of slab
Direction is machined with through hole 3-3, and described screw 1 passes this through hole 3-3.
Described screw 1 includes top cap 1-1, connecting rod 1-2 and threaded rod 1-3, described top cap 1-1, connecting rod 1-2 and screw thread
Bar 1-3 is fixedly connected sequentially from top to bottom and is made as one, and described top cap 1-1 is provided with force groove 1-4, described connecting rod 1-2
Being coaxially disposed with threaded rod 1-3, described connecting rod 1-2 is polished rod, when screw 1 inserts in inner sleeve 3 along the length direction of inner sleeve 3
Time, the internal diameter of described inner sleeve 3 is less than the external diameter of top cap 1-1, and the bottom of top cap 1-1 is adjacent to mutually with the top of plectane 3-2, described company
Extension bar 1-2 is arranged through through hole 3-3 and connecting rod 1-2 with through hole 3-3 gap, and described threaded rod 1-3 is arranged in thread Pilot hole 8
And it threadeds with thread Pilot hole 8.
Two the first chamfered edge groove 4-1 it are machined with on the outer wall at overcoat 4 top.It is machined with two on the outer wall at inner sleeve 3 top
Second chamfered edge groove 3-4.Head gasket 2 it is provided with between screw 1 and inner sleeve 3.L-shaped packing ring 5 is arranged on bottom and the steamer of overcoat 4
Between the split of machine stator portion set 6, described overcoat 4 is removably connected with steam turbine stator portion set 6 by L-shaped packing ring 5.
In the step 4 of the present invention after back tender completes, to the pin-and-hole on target pin 7 and target pin 7 outside
Portion's size measures, and when target pin 7 size meets matching requirements, trial assembly target pin 7, when passing through normal hands
When section directly takes out target pin 7, with M6 or M8 mono-word than the end face M6 or the little 1mm of the M8 depth of thread of target pin 7
Opening stud, is screwed in M6 or M8 screw thread, welder's spot welding, the top end face of pincers worker reconditioning target pin 7, then trial assembly target pin
7, no problem can normally assemble stator portion and put lower half, thus completes stator portion and overlap the difficult problem reprocessed.
Detailed description of the invention two: present embodiment is the further restriction of detailed description of the invention one, the hole depth of thread Pilot hole 8
For 15mm, thread Pilot hole 8 is hole M6 or hole M8.Hole M6 is the screwed hole of a diameter of 6 millimeters, and hole M8 is the spiral shell of a diameter of 8 millimeters
Pit.
Detailed description of the invention three: present embodiment is the further restriction of detailed description of the invention one, by interior in step 2
Set 3 inversion needs to guarantee that the second chamfered edge groove 3-4 is above overcoat 4 during screwing in overcoat 4 through this target pin 7.
Detailed description of the invention four: present embodiment is the further restriction of detailed description of the invention one, will top in step 2
Portion's packing ring 2 is placed on the end face of inner sleeve 3 and head gasket 2 is arranged concentrically with inner sleeve 3.
Detailed description of the invention five: present embodiment is the further restriction of detailed description of the invention one or two, screw 1 be M6 or
M8 soket head cap screw.M6 or M8 soket head cap screw easy to drawing materials and with low cost.
Detailed description of the invention six: present embodiment is the further restriction of detailed description of the invention one, and chemical derusting agent is not
Rust steel oxidation skin abluent.It is a kind of Deruster for metal, and the concrete model of this stainless steel oxidation skin abluent is RSB-505.
Claims (6)
1. a pin dismounting method when steam turbine stator portion set is reprocessed, it is characterised in that: pin dismounting method comprises the following steps:
Step one: labelling and boring work: first take the first half and the lower half reprocessing steam turbine stator portion set apart, check one by one
Multiple pins at steam turbine stator portion set (6) horizontal flange, determine what normal operating cannot be taken out from multiple pins
The position of pin one by one labelling, as target target pin (7), choose the end of the exposed portion of target target pin (7)
A thread Pilot hole (8) is also bored, and carry out tapping with screw die and screw tap on this end face in face；
Step 2: dismantlement work: first L-shaped packing ring (5) is placed on stator portion set through the target pin (7) in step one
On split, overcoat (4) is placed on L-shaped packing ring (5) through target pin (7) upper and be arranged on the first chamfered edge groove (4-1) and exist
Top, then inner sleeve (3) is inverted in this target pin (7) screw-in overcoat (4), head gasket (2) is placed on inner sleeve (3)
End face on, finally the screw (1) matched with thread Pilot hole (8) is sequentially passed through head gasket (2) and inner sleeve (3) is directed at afterwards
And in the thread Pilot hole (8) on the target pin (7) being tightened in step one, finally look for one and the second chamfered edge groove (3-4) place
Size coupling open-end wrench is also placed at the wrench position of inner sleeve (3), hand-held maintains static, then look for one with the first chamfered edge groove
(4-1) place's size is mated open-end wrench and is placed at the wrench position of overcoat (4), another hands the most slowly turn spanner,
Inner sleeve (3) is risen along axis drives head gasket (2) and screw (1) to rise simultaneously, can be driven by this target pin (7)
Pulling up, the process of choosing of the target pin (7) that other cannot take out is ibid；
Step 3: rust cleaning and cleaning: wait other stator portion to overlap after other position fixes, to this pin-and-hole and target pin (7)
Outside carries out fine sandpaper and removes floating rust, then corrosion is removed clean with chemical derusting agent, and is carried out with abluent；
Step 4: measure work: treating that target pin (7) is dried, measure target pin (7) each position, size meets
Matching requirements, trial assembly target pin (7).
2. overlap pin dismounting method when reprocessing according to a kind of steam turbine stator portion described in right 1, it is characterised in that: thread Pilot hole
(8) hole depth is 15mm, and thread Pilot hole (8) is hole M6 or hole M8.
3. overlap pin dismounting method when reprocessing according to a kind of steam turbine stator portion described in right 1, it is characterised in that: in step 2
Middle inner sleeve (3) inversion needs to guarantee the second chamfered edge groove (3-4) outside during this target pin (7) screw-in overcoat (4)
The top of set (4).
4. overlap pin dismounting method when reprocessing according to a kind of steam turbine stator portion described in right 1, it is characterised in that: in step 2
Middle head gasket (2) is placed on the end face of inner sleeve (3) and head gasket (2) is arranged concentrically with inner sleeve (3).
5. overlap pin dismounting method when reprocessing according to a kind of steam turbine stator portion described in right 1 or 2, it is characterised in that: screw
(1) it is M6 or M8 soket head cap screw.
6. overlap pin dismounting method when reprocessing according to a kind of steam turbine stator portion described in right 1, it is characterised in that: chemical derusting
Agent is stainless steel oxidation skin abluent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610648341.9A CN106239422B (en) | 2016-08-09 | 2016-08-09 | A kind of pin dismounting method when steam turbine stator portion set is reprocessed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610648341.9A CN106239422B (en) | 2016-08-09 | 2016-08-09 | A kind of pin dismounting method when steam turbine stator portion set is reprocessed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106239422A true CN106239422A (en) | 2016-12-21 |
| CN106239422B CN106239422B (en) | 2018-02-16 |
Family
ID=58079092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610648341.9A Active CN106239422B (en) | 2016-08-09 | 2016-08-09 | A kind of pin dismounting method when steam turbine stator portion set is reprocessed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106239422B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877767A (en) * | 2019-04-09 | 2019-06-14 | 安徽马钢设备检修有限公司 | A kind of method for dismounting and its device of TRT rotor blade positioning transformations attachment pegs |
| CN112894707A (en) * | 2021-02-01 | 2021-06-04 | 中国人民解放军第五七一九工厂 | Dismounting device and dismounting method for adjustable blade copper bush of aircraft engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3147575U (en) * | 2008-10-23 | 2009-01-08 | 別府金型有限会社 | Knock pin removal jig |
| CN201442247U (en) * | 2009-06-10 | 2010-04-28 | 山东金麒麟集团有限公司 | Mould pin disassembling tool |
| CN204019455U (en) * | 2014-08-15 | 2014-12-17 | 广州宝钿机械有限公司 | A kind of pin removal |
-
2016
- 2016-08-09 CN CN201610648341.9A patent/CN106239422B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3147575U (en) * | 2008-10-23 | 2009-01-08 | 別府金型有限会社 | Knock pin removal jig |
| CN201442247U (en) * | 2009-06-10 | 2010-04-28 | 山东金麒麟集团有限公司 | Mould pin disassembling tool |
| CN204019455U (en) * | 2014-08-15 | 2014-12-17 | 广州宝钿机械有限公司 | A kind of pin removal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877767A (en) * | 2019-04-09 | 2019-06-14 | 安徽马钢设备检修有限公司 | A kind of method for dismounting and its device of TRT rotor blade positioning transformations attachment pegs |
| CN112894707A (en) * | 2021-02-01 | 2021-06-04 | 中国人民解放军第五七一九工厂 | Dismounting device and dismounting method for adjustable blade copper bush of aircraft engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106239422B (en) | 2018-02-16 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230310 Address after: 150000 building 3, high tech production base, Nangang District, Harbin City, Heilongjiang Province Patentee after: HARBIN TURBINE Co.,Ltd. Patentee after: HADIAN POWER EQUIPMENT NATIONAL ENGINEERING RESEARCH CENTER CO.,LTD. Address before: 150046 No. three power road 345, Xiangfang District, Heilongjiang, Harbin Patentee before: HARBIN TURBINE Co.,Ltd. |
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