CN104259534A - Non-adjustable vapor seal back arc machining device and non-adjustable vapor seal back arc machining method - Google Patents
Non-adjustable vapor seal back arc machining device and non-adjustable vapor seal back arc machining method Download PDFInfo
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- CN104259534A CN104259534A CN201410475834.8A CN201410475834A CN104259534A CN 104259534 A CN104259534 A CN 104259534A CN 201410475834 A CN201410475834 A CN 201410475834A CN 104259534 A CN104259534 A CN 104259534A
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- China
- Prior art keywords
- packing
- rectangular steel
- body arc
- straight pin
- steel plates
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
Abstract
The invention discloses a non-adjustable vapor seal back arc machining device and a non-adjustable vapor seal back arc machining method. The non-adjustable vapor seal back arc machining device is characterized in that a machining plate is arranged; the machining plate is formed by distributing all paths of fixing grooves in the upper surface of a rectangular steel plate from the front end of the rectangular steel plate to the tail end of the rectangular steel plate in a radial shape; a through hole is formed in the front end of the rectangular steel plate in a manner of penetrating through the steel plate in a thickness direction and a cylindrical pin is matched with the through hole; and the cylindrical pin is in running fit with the through hole. According to the non-adjustable vapor seal back arc machining device and the non-adjustable vapor seal back arc machining method, an existing milling machine is used for machining and the rapid machining speed is obtained in a low-cost manner; and the machining of a vapor seal back arc with a large-range turning radius can be adapted.
Description
Technical field
The present invention relates to a kind of non-adjustable packing back of the body arc processing unit (plant) and processing method, is more particularly the back of the body arc processing unit (plant) for the non-adjustable packing of power industry and processing method.
Background technology
As depicted in figs. 1 and 2, about labyrinth clearance: cylinder internal exists high temperature and high pressure steam, the size of the dynamic and static gaps A between packing 1 and turbine rotor 2 and leakage rate direct correlation, cylinder internal labyrinth clearance senior general directly causes turbine efficiency to reduce, or outer gland packing leakage, contaminated environment.Adjustment about labyrinth clearance: non-adjustable packing is the size being adjusted labyrinth clearance by the size of change packing back boss.The adjustment face of finishing packing boss, namely packing back of the body arc 5, makes packing boss 1a thinning, under the effect of the spring leaf 4 of packing 1 side in gland sleeve 3, labyrinth clearance is diminished.
There is different problems respectively in the following various method that power plant carries out adjusting for the gap of non-adjustable packing at present:
First is adopt the back of the body arc machine that market can be buied, direct machining gap undesirable packing back of the body arc.But buy a back of the body arc machine and need RMB 10-20 ten thousand yuan, and very easily there is off-axis when processing capacity is large in its motor of back of the body arc machine bought;
Second is adopt scraper to carry out repairing scraping at back of the body arc position, but it repaiies the speed of scraping very slowly, can not adapt to Production requirement;
3rd is utilize boring machine to carry out boring at packing back of the body arc position, and this mode exists the slow problem of process velocity equally, and meanwhile, radius of machining is subject to the restriction of workbench.
4th is machining mould, and carry out by the processing of road packing, the machining mould kind that this mode relates to is more, and cost is very high.
Directly change satisfactory new packing for 5th, this obviously causes the wasting of resources.
Summary of the invention
The present invention is the weak point for avoiding existing for above-mentioned prior art, a kind of non-adjustable packing back of the body arc processing unit (plant) and processing method are provided, existing milling machine is utilized to process, obtain process velocity faster in the mode of low cost, and the packing back of the body arc processing of the wider radius of gyration can be adapted to.
The present invention is that technical solution problem adopts following technical scheme:
The present invention's non-adjustable packing back of the body arc processing unit (plant), be characterized in: arrange a processing plate, described processing plate is the upper surface in a rectangular steel plates, to distribute each road holddown groove to the tail end of rectangular steel plates from the front end of rectangular steel plates in penetrating shape; Run through steel plate thickness direction in the front end of described rectangular steel plates and one through hole be set, coordinate described through hole to be provided with straight pin, described straight pin in described through hole for being rotatably assorted.
The present invention's non-adjustable packing back of the body arc processing unit (plant), its feature is also: described holddown groove is at least twice.
The present invention's non-adjustable packing back of the body arc processing unit (plant), its feature is also: the cross section of described holddown groove is inverse-T-shaped.
The present invention's non-adjustable packing back of the body arc processing method, is characterized in: arrange a processing plate, described processing plate is the upper surface in a rectangular steel plates, the front end from rectangular steel plates to distribute each road holddown groove in penetrating shape to the tail end of rectangular steel plates; Run through steel plate thickness direction in the front end of described rectangular steel plates and one through hole be set, coordinate described through hole to be provided with straight pin, described straight pin in described through hole for being rotatably assorted; Described processing method is carried out as follows:
Step one: utilize straight pin to be positioned on milling machine table described processing plate, packing is placed on described processing plate with its lateral plane, described packing is at least across twice holddown groove, packing back of the body arc machined surface is towards straight pin side, and the distance arranging the center of described packing back of the body arc machined surface and straight pin is that packing carries on the back arc radius of machining; Position with the bolt be fixedly installed in holddown groove in the table top side of packing boss, withhold with the pressing plate be fixedly installed in holddown groove at the opposite side of packing, make described packing be fixed on processing plate;
Step 2: by described packing back of the body arc radius of machining moving milling machine workbench; To rotate described processing plate in straight pin being, and packing back of the body arc Working position error is everywhere no more than 0.5mm to utilize the dial gauge be arranged on fraise jig to confirm at rotation process;
Step 3: milling cutter feed on the machined surface of packing back of the body arc, rotates described processing plate simultaneously centered by straight pin, utilizes the mobile of milling machine table to control the processing capacity of milling cutter on the machined surface of packing back of the body arc, completes processing.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention can process the radius of gyration of packing back of the body arc at 50mm ~ 2m, and its scope is determined by the size of base plate.
2, the inventive method utilizes adjustment function, its firmly holder function of milling machine, the precision high characteristic that it can install the function of major diameter milling cutter, its movable workbench amount can be controlled in 0.05mm, carry out obtaining higher machining accuracy, avoid the situation adopting in prior art and carry on the back arc machine and easily occur disconnected milling cutter and break motor bearing, processing cost is low.
3, the present invention repaiies than scraper and to scrape and the processing mode of boring machine boring substantially increases process velocity.
Accompanying drawing explanation
Fig. 1 is packing principle elevational schematic;
Fig. 2 is packing principle sectional schematic diagram;
Fig. 3 processes plate structure schematic diagram in the present invention;
Fig. 4 is packing and processing plate and milling machine table fitting plane schematic diagram in the present invention;
Fig. 5 is that in the present invention, packing assembles elevational schematic view with processing plate and milling machine table;
Fig. 6 is processing method schematic diagram in the present invention;
Fig. 7 is milling cutter feed schematic diagram in the present invention;
Number in the figure: A gap, 1 packing, 1a packing boss, 2 turbine rotors, 3 gland sleeves, 4 spring leafs; 5 packing back of the body arcs; 6 rectangular steel plates, 6a handle, 7 holddown grooves, 8 through holes, 9 straight pins, 10 milling machine tables, 11 bolts, 12 pressing plates, 13 milling cutters, 14 milling fixtures, 15 large radius packings.
Detailed description of the invention
See Fig. 3, in the present embodiment, the version of non-adjustable packing back of the body arc processing unit (plant) arranges a processing plate, and processing plate is the upper surface in a rectangular steel plates 6, to distribute each road holddown groove 7 to the tail end of rectangular steel plates from the front end of rectangular steel plates in penetrating shape; Run through steel plate thickness direction in the front end of rectangular steel plates 6 and one through hole 8 be set, coordinate described through hole 8 to be provided with straight pin 9, straight pin 9 in through hole 8 for being rotatably assorted.
In concrete enforcement, holddown groove 7 is at least twice, and the cross section of holddown groove 7 is inverse-T-shaped.
In the present embodiment, non-adjustable packing back of the body arc processing method is: by arranging processing plate as shown in Figure 3, and processing plate to distribute each road holddown groove 7 in penetrating shape at the upper surface of a rectangular steel plates 6, from the front end of rectangular steel plates to the tail end of rectangular steel plates; Run through steel plate thickness direction in the front end of rectangular steel plates 6 and one through hole 8 be set, coordinate through hole 8 be provided with straight pin 9, straight pin 9 in through hole 8 for being rotatably assorted.
See Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the processing method in the present embodiment is carried out as follows:
Step one: utilized by processing plate straight pin 9 to be positioned on milling machine table 10, packing 1 is placed on processing plate with its lateral plane, packing 1 is at least across twice holddown groove 7, packing back of the body arc machined surface is towards straight pin 9 side, and the distance arranging the center of packing back of the body arc machined surface and straight pin 9 is that packing carries on the back arc radius of machining; Position with the bolt 11 be fixedly installed in holddown groove 7 in the table top side of packing boss, withhold with the pressing plate 12 be fixedly installed in holddown groove 7 at the opposite side of packing, packing 1 is fixed on processing plate (as shown in Figure 4 and Figure 5).
Step 2: by packing back of the body arc radius of machining moving milling machine workbench 10; To rotate processing plate in straight pin 9 being, and packing back of the body arc Working position error is everywhere no more than 0.5mm (as shown in Figure 6, Figure 7) to utilize the dial gauge be arranged on milling fixture 14 to confirm at rotation process.
Step 3: milling cutter 13 feed on the machined surface of packing back of the body arc 5, centered by straight pin 9, rotate processing plate simultaneously, utilize the mobile of milling machine table 10 to control the processing capacity (as shown in Figure 7) of milling cutter 13 on the machined surface of packing back of the body arc 5, complete processing.
Large radius packing 15 shown in Fig. 4 and Fig. 6 needs to be placed on the farther position of distance straight pin, successively, can according to the length of packing to be processed back of the body arc radius setting processing plate, the handle 6a being fixedly installed on rectangular steel plates afterbody shown in Fig. 4 and Fig. 5 is for ease of operation, rectangular steel plates is that it is not limited to rectangle for easy to process.
In process, the depth of cut controlling milling cutter 13 is the cutting output of the cylinder back of the body arc of setting, for repeating the cylinder processing same kind, determine the position of packing on processing plate when processing first piece of packing, and the processing position of plate on milling machine processing platform, utilize the bolt be fixedly installed directly can obtain location subsequently, repeat to process.
In order to ensure that processing plate rotates freely, the fit clearance arranging straight pin and through hole should at 0.03mm ~ 0.04mm, the pin body portion height 0.20 ~ 0.30mm larger than the gauge of rectangular steel plates of straight pin, to ensure still and between rectangular steel plates to maintain gap after utilizing bolted, make rectangular steel plates flexible rotating.
Claims (4)
1. a non-adjustable packing back of the body arc processing unit (plant), it is characterized in that: a processing plate is set, described processing plate is the upper surface in a rectangular steel plates (6), to distribute each road holddown groove (7) to the tail end of rectangular steel plates from the front end of rectangular steel plates in penetrating shape; Run through steel plate thickness direction in the front end of described rectangular steel plates and one through hole (8) be set, coordinate described through hole (8) to be provided with straight pin, described straight pin in described through hole (8) for being rotatably assorted.
2. non-adjustable packing back of the body arc processing unit (plant) according to claim 1, is characterized in that: described holddown groove (7) is at least twice.
3. non-adjustable packing back of the body arc processing unit (plant) according to claim 1 and 2, is characterized in that: the cross section of described holddown groove (7) is inverse-T-shaped.
4. a non-adjustable packing back of the body arc processing method, it is characterized in that: a processing plate is set, described processing plate is the upper surface in a rectangular steel plates (6), the front end from rectangular steel plates to distribute each road holddown groove (7) in penetrating shape to the tail end of rectangular steel plates; Run through steel plate thickness direction in the front end of described rectangular steel plates (6) and one through hole (8) is set, coordinate described through hole (8) to be provided with straight pin (9), described straight pin (9) in described through hole (8) for being rotatably assorted; Described processing method is carried out as follows:
Step one: utilized by described processing plate straight pin (9) to be positioned on milling machine table (10), packing (1) is placed on described processing plate with its lateral plane, described packing (1) is at least across twice holddown groove (7), packing back of the body arc machined surface is towards straight pin (9) side, and the distance arranging the center of described packing back of the body arc machined surface and straight pin (9) is that packing carries on the back arc radius of machining; Position with the bolt (11) be fixedly installed in holddown groove (7) in the table top side of packing boss, withhold with the pressing plate (12) be fixedly installed in holddown groove (7) at the opposite side of packing, make described packing (1) be fixed on processing plate;
Step 2: by described packing back of the body arc radius of machining moving milling machine workbench (10); To rotate described processing plate in straight pin (9) being, and packing back of the body arc Working position error is everywhere no more than 0.5mm to utilize the dial gauge be arranged on fraise jig to confirm at rotation process;
Step 3: milling cutter (13) feed on the machined surface of packing back of the body arc (5), centered by straight pin (9), rotate described processing plate simultaneously, utilize the mobile of milling machine table (10) to control the processing capacity of milling cutter (13) on the machined surface of packing back of the body arc (5), complete processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410475834.8A CN104259534B (en) | 2014-09-17 | 2014-09-17 | Non-adjustable packing back of the body arc processing unit (plant) and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410475834.8A CN104259534B (en) | 2014-09-17 | 2014-09-17 | Non-adjustable packing back of the body arc processing unit (plant) and processing method |
Publications (2)
| Publication Number | Publication Date |
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| CN104259534A true CN104259534A (en) | 2015-01-07 |
| CN104259534B CN104259534B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410475834.8A Active CN104259534B (en) | 2014-09-17 | 2014-09-17 | Non-adjustable packing back of the body arc processing unit (plant) and processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984947A (en) * | 2017-04-14 | 2017-07-28 | 北京航星机器制造有限公司 | The machining process of journal stirrup part arc profile |
| CN110722383A (en) * | 2019-10-26 | 2020-01-24 | 含山县大力精密机械有限公司 | Adjustable anchor clamps are used in drilling of brake block |
Citations (6)
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| CN2559448Y (en) * | 2002-08-05 | 2003-07-09 | 张宙宇 | Multifunctional gland sealing trimmer |
| CN201179563Y (en) * | 2008-03-17 | 2009-01-14 | 韩兴全 | Electric scraping steam seal gland |
| CN202399095U (en) * | 2011-11-04 | 2012-08-29 | 哈尔滨通能电气股份有限公司 | Steam sealing ring gap shape-following type scraping device for steam turbine |
| CN103406578A (en) * | 2013-07-31 | 2013-11-27 | 江苏鑫信润科技有限公司 | On-site gland sealing back-profile milling machine for turbine |
| CN103586542A (en) * | 2013-10-17 | 2014-02-19 | 江苏透平密封高科技有限公司 | Steam seal back profile scraping device |
| CN204035645U (en) * | 2014-09-17 | 2014-12-24 | 大唐淮北发电厂 | Non-adjustable packing back of the body arc processing unit (plant) |
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2014
- 2014-09-17 CN CN201410475834.8A patent/CN104259534B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2559448Y (en) * | 2002-08-05 | 2003-07-09 | 张宙宇 | Multifunctional gland sealing trimmer |
| CN201179563Y (en) * | 2008-03-17 | 2009-01-14 | 韩兴全 | Electric scraping steam seal gland |
| CN202399095U (en) * | 2011-11-04 | 2012-08-29 | 哈尔滨通能电气股份有限公司 | Steam sealing ring gap shape-following type scraping device for steam turbine |
| CN103406578A (en) * | 2013-07-31 | 2013-11-27 | 江苏鑫信润科技有限公司 | On-site gland sealing back-profile milling machine for turbine |
| CN103586542A (en) * | 2013-10-17 | 2014-02-19 | 江苏透平密封高科技有限公司 | Steam seal back profile scraping device |
| CN204035645U (en) * | 2014-09-17 | 2014-12-24 | 大唐淮北发电厂 | Non-adjustable packing back of the body arc processing unit (plant) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984947A (en) * | 2017-04-14 | 2017-07-28 | 北京航星机器制造有限公司 | The machining process of journal stirrup part arc profile |
| CN110722383A (en) * | 2019-10-26 | 2020-01-24 | 含山县大力精密机械有限公司 | Adjustable anchor clamps are used in drilling of brake block |
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| Publication number | Publication date |
|---|---|
| CN104259534B (en) | 2016-05-25 |
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