CN201539348U - Piston type sealing device - Google Patents
Piston type sealing device Download PDFInfo
- Publication number
- CN201539348U CN201539348U CN2009202413516U CN200920241351U CN201539348U CN 201539348 U CN201539348 U CN 201539348U CN 2009202413516 U CN2009202413516 U CN 2009202413516U CN 200920241351 U CN200920241351 U CN 200920241351U CN 201539348 U CN201539348 U CN 201539348U
- Authority
- CN
- China
- Prior art keywords
- sealing
- ring
- piston
- water
- main shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Sealing Devices (AREA)
Abstract
The utility model relates to a piston type sealing device for sealing a main shaft of a water turbine. A sealing base is fastened to a machine cover. A hollow step cylindrical water sealing inner ring seals a central step cylindrical hole which is sleeved into a sealing base through sliding matching. A piston sealing ring is placed into an annular groove at the base of a water sealing piston. The water sealing piston and the piston sealing ring are integrated through a screw. The hollow hole of the water sealing piston is movably provided with a main shaft with a same axis through sleeving. A sealing rotation frame which slidably contacts with the piston sealing ring is positioned and connected with the main shaft through a fastening screw. Furthermore the sealing rotation frame rotates together with the main shaft. Pressure water is introduced into the sealing seat. The piston sealing ring is pressed to the sealing rotation frame under the function of pressure water, and has an automatic compensation function of sealing. The piston sealing ring which has appropriate abrasion at the end face always abuts against the sealing rotation frame always, thereby greatly prolonging the replacement period of the piston sealing ring. The piston sealing ring does not contact with the main shaft directly so that the abrasion and temperature increase of the main shaft can be prevented.
Description
Technical field
The utility model relates to a kind of seal arrangement, particularly a kind of piston type seal arrangement that is used for hydraulic turbine main shaft.
Background technique
The effect of hydraulic turbine main shaft sealing is to enter bearing and hydraulic loss for preventing that unit from leaking.Originally Chang Yong sealing means has packing_seal and two dull and stereotyped sealing, but not ideal; Packing_seal makes main shaft be generated heat by friction because packing directly contacts with main shaft easily, finally causes bearing shell to heat up; Moreover long-time running also easily makes the main shaft wearing and tearing.Two dull and stereotyped sealings mainly are the gaps that will keep between flat board, complex structure, and water leakage increases when lifting machine, adjusts also complexity, is difficult for installing.And, do not seal automatic compensation function after their wearing and tearing, will produce bigger leakage, have to often change labor intensive and financial resources.
Summary of the invention
The purpose of this utility model has provided and a kind ofly has been used to seal hydraulic turbine main shaft, and has the piston type seal arrangement of sealing automatic compensation function, also can be used for sealing other various rotating drive shafts.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of piston type seal arrangement, and its sealing seat is fastened on the support cover, and the ring sealed sliding is inserted in the center step cylindrical hole of sealing seat movingly in the cylindrical water seal of hollow step; Piston packing ring is placed in the annular groove of ring bottom in the water seal, and ring relies on screw to link into an integrated entity with piston packing ring in the water seal; In the water seal hollow hole of ring be inserted in water seal in the main shaft of the total same axis of ring; Rely on Cock screw and principal shaft locking to be located by connecting with the sealing pivoted frame of piston packing ring sliding contact and be integral, and rotate with main shaft; Closed cavity between sealing seat encircles with water seal is interior is communicated with penstock, and passes to 0.15～0.2MPa press water.The top of sealing seat is provided with the water shutoff box that is communicated with waste pipe, can discharge the water that oozes out.
Ring cylindrical fluting embeds seal ring in the described water seal.The bottom of described sealing seat is provided with two guide fingers, and ring and piston seal are equipped with two pin-and-holes that are complementary with guide finger and are inserted in guide finger in the water seal that links into an integrated entity; Ring and piston packing ring can move axially along guide finger together in the water seal that links into an integrated entity.The plane is provided with the stainless steel liner plate on the described sealing pivoted frame.The inner headed face of the center step cylindrical hole of described sealing seat is provided with the stainless steel liner plate.·
The beneficial effects of the utility model are:
1. when using, the piston packing ring that links into an integrated entity with ring in the water seal is pressed to the sealing pivoted frame under the effect of press water, reach the requirement of sealing and control water leakage; And piston packing ring constantly has the sealing automatic compensation function in the wear process, the piston packing ring of an amount of wearing and tearing of end face is under the effect of press water, still fit tightly with the sealing pivoted frame all the time, thereby prolong the replacement cycle of piston packing ring greatly, and each parts design mix half form all, therefore also dismounting and overhaul this device, saving human and material resources and financial resources separately under the situation of engine block not.
2, since piston packing ring directly do not contact with the main shaft of rotation, thereby avoid the wearing and tearing and the temperature rise of main shaft.
3. easily damaged parts is a piston packing ring, and its material is rubber II-2, and structure of the present utility model is not high to the dimension precision requirement of piston packing ring, so the external coordination Order Cost is lower.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Embodiment is as shown in Figure 1: a kind of piston type seal arrangement that is used to seal the water turbine rotary main shaft, and its sealing seat 7 is fastened on the support cover, and ring 5 sealed sliding are inserted in the center step cylindrical hole of sealing seat 7 movingly in the cylindrical water seal of hollow step; Ring 5 cylindricals fluting embeds seal ring 12 in the water seal, and the inner headed face of the center step cylindrical hole of sealing seat 7 is welded with the stainless steel liner plate.Rubber piston seal ring 4 is placed in the annular groove of ring 5 bottoms in the water seal, and ring 5 relies on screw 11 to link into an integrated entity with rubber piston seal ring 4 in the water seal;
In the water seal hollow hole of ring 5 be inserted in water seal in the main shaft 1 of ring 5 total same axis.Rely on Cock screw 2 and main shaft 1 locking and positioning to link into an integrated entity with the sealing pivoted frame 3 of rubber piston seal ring 4 sliding contacts, and rotate with main shaft 1, the last plane of sealing pivoted frame 3 is welded with the stainless steel lining plate.
The bottom of sealing seat 7 is provided with two guide fingers 10, and ring 5 and piston packing ring 4 are provided with two pin-and-holes that are complementary with guide finger 10 and are inserted in guide finger 10 in the water seal that links into an integrated entity; Ring 5 and piston packing ring 4 can move axially along guide finger 10 together in the water seal that links into an integrated entity, and press to sealing pivoted frame 3; Guide finger 10 is placed restrictions on sealing pivoted frame 3 driven rotary that rubber piston seal ring 4 is rotated.
During use, the rubber piston seal ring 4 that links into an integrated entity with water seal piston 5 is pressed to sealing pivoted frame 3 under the effect of press water, reach the requirement of sealing and control water leakage; And rubber piston seal ring 4 constantly has the sealing automatic compensation function in the wear process, the rubber piston seal ring 4 of an amount of wearing and tearing of end face is under the effect of press water, still fit tightly with sealing pivoted frame 3 all the time, thereby prolong the replacement cycle of rubber piston seal ring 4 greatly, save manpower and financial resources.
Claims (5)
1. piston type seal arrangement, it is characterized in that: sealing seat (7) is fastened on the support cover, and ring (5) sealed sliding is inserted in the center step cylindrical hole of sealing seat (7) movingly in the cylindrical water seal of hollow step; Piston packing ring (4) is placed in the annular groove of ring (5) bottom in the water seal, and ring (5) relies on screw (11) to link into an integrated entity with piston packing ring (4) in the water seal; In the water seal hollow hole of ring (5) be inserted in water seal in the main shaft (1) of the total same axis of ring (5); Rely on Cock screw (2) and main shaft (1) locking and positioning to link into an integrated entity with the sealing pivoted frame (3) of piston packing ring (4) sliding contact, and rotate with main shaft (1); Sealing seat (7) is communicated with penstock (8) with the interior closed cavity (6) that encircles between (5) of water seal, and the top of sealing seat (7) is provided with the water shutoff box (9) that is communicated with waste pipe (13).
2. a kind of piston type seal arrangement according to claim 1 is characterized in that: ring (5) cylindrical fluting embeds seal ring (12) in the described water seal.
3. a kind of piston type seal arrangement according to claim 1, it is characterized in that: the bottom of described sealing seat (7) is provided with two guide fingers (10), and ring (5) and piston packing ring (4) are provided with and guide finger (10) is complementary and is inserted in two pin-and-holes of guide finger (10) in the water seal that links into an integrated entity; Ring (5) and piston packing ring (4) can move axially along guide finger (10) together in the water seal that links into an integrated entity.
4. a kind of piston type seal arrangement according to claim 1 is characterized in that: described sealing pivoted frame (3) is gone up the plane and is provided with the stainless steel liner plate.
5. a kind of piston type seal arrangement according to claim 1 is characterized in that: the inner headed face of the center step cylindrical hole of described sealing seat (7) is provided with the stainless steel liner plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202413516U CN201539348U (en) | 2009-11-12 | 2009-11-12 | Piston type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202413516U CN201539348U (en) | 2009-11-12 | 2009-11-12 | Piston type sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539348U true CN201539348U (en) | 2010-08-04 |
Family
ID=42590799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202413516U Expired - Fee Related CN201539348U (en) | 2009-11-12 | 2009-11-12 | Piston type sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539348U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153820A (en) * | 2018-01-15 | 2019-08-23 | 烟台莱兴机械铸造有限公司 | A kind of efficient Special grinding machine for guide rail and method for grinding |
| CN114856885A (en) * | 2022-06-20 | 2022-08-05 | 南方电网调峰调频发电有限公司检修试验分公司 | Step type sealing structure and water turbine |
-
2009
- 2009-11-12 CN CN2009202413516U patent/CN201539348U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153820A (en) * | 2018-01-15 | 2019-08-23 | 烟台莱兴机械铸造有限公司 | A kind of efficient Special grinding machine for guide rail and method for grinding |
| CN114856885A (en) * | 2022-06-20 | 2022-08-05 | 南方电网调峰调频发电有限公司检修试验分公司 | Step type sealing structure and water turbine |
| CN114856885B (en) * | 2022-06-20 | 2024-03-29 | 南方电网调峰调频发电有限公司检修试验分公司 | Step type sealing structure and water turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20121112 |