CN213397508U - Main shaft seal floating test tool of bulb tubular unit - Google Patents
Main shaft seal floating test tool of bulb tubular unit Download PDFInfo
- Publication number
- CN213397508U CN213397508U CN202022401823.9U CN202022401823U CN213397508U CN 213397508 U CN213397508 U CN 213397508U CN 202022401823 U CN202022401823 U CN 202022401823U CN 213397508 U CN213397508 U CN 213397508U
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- China
- Prior art keywords
- main shaft
- floating
- ring
- shaft seal
- test tool
- 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.)
- Withdrawn - After Issue
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- 238000007667 floating Methods 0.000 title claims abstract description 53
- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 18
- 238000007789 sealing Methods 0.000 abstract description 13
- 238000012423 maintenance Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 4
- 235000008708 Morus alba Nutrition 0.000 description 2
- 240000000249 Morus alba Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- Hydraulic Turbines (AREA)
Abstract
The utility model discloses a main shaft seal of bulb through-flow unit test tool that floats, including cushion and adjusting screw, the cushion passes through bolt cooperation guide block assembly screw and installs on the ring that floats. The adjusting screw rod can penetrate through the cushion block to act on the supporting ring, and the floating condition of the floating ring is monitored through data on the dial indicator beside the cushion block. And simultaneously, the utility model discloses before experimental and experimental back respectively through 0.05mm clearance between clearance gauge inspection seal block and the ring that wear-resistants to judge the main shaft seal floating ring follow-up nature. The floating test can be carried out under the conditions that sealing water is not introduced and a main shaft sealing water tank cover plate is not installed again by using the test tool, and the floating quality of the main shaft sealing floating ring can be judged visually. The main shaft seal maintenance process is optimized and improved, the repeated working strength of the maintenance process is reduced, a large amount of manpower resources are saved, the maintenance reliability of equipment is improved, and the maintenance construction period is saved.
Description
Technical Field
The utility model relates to a bulb through-flow turbine generator set's main shaft seal belongs to hydroelectric power generation technical field, specifically is a bulb through-flow turbine set's main shaft seal test tool that floats.
Background
8 single-machine 50MW bulb tubular units are installed in the secondary hydropower station of the mulberry river, the main shaft seal of the tubular units adopts a water pressure end face and spring structural type seal structure, and the main shaft seal is horizontally arranged, so that the phenomena of blocking and water leakage frequently occur in the operation of the main shaft seal, and the safe operation of the units is threatened. When the main shaft seal is overhauled, a main shaft seal floating test is required to be carried out, and the action condition of the floating ring is checked. Due to the structural characteristics of horizontal arrangement of the bulb tubular unit, the floating test is carried out by adopting a conventional mode (main shaft seal water pressure), the spindle seal water tank cover plate and the seal end cover can be developed after being assembled back, the floating condition of the floating ring cannot be monitored after the water tank cover plate is assembled back, the actual action condition of the floating ring cannot be confirmed, if the water tank cover plate is assembled back and then the floating test is carried out, the spindle seal water tank cover plate is required to be disassembled for secondary overhaul treatment, the construction period is wasted, the human resources are wasted, a large amount of human cost is required to be invested, the overhaul construction period of the unit is delayed seriously, the effective utilization time of the unit is shortened, and the production benefit is reduced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the inventor conducts further design research, a plurality of cushion blocks are arranged on the floating ring, the adjusting screw penetrates through the cushion blocks to act on the supporting ring to simulate sealing water pressure, and a dial indicator is erected beside the cushion blocks to monitor the floating condition of the floating ring.
Specifically, the utility model provides a main shaft seal of bulb tubular unit test tool that floats, including cushion and adjusting screw, the cushion passes through bolt cooperation guide block assembly screw and installs on the ring that floats. The adjusting screw rod can penetrate through the cushion block to act on the supporting ring, and the floating condition of the floating ring is monitored through data on the dial indicator beside the cushion block.
Furthermore, a plurality of groups of the test tools are mounted on the floating ring.
Furthermore, the size of the cushion block needs to be manufactured according to the sizes of the stop pin hole and the guide block assembling screw hole.
Further, the steel material serial number of the cushion block is Q235B.
Further, the adjusting screw is an M18 bolt.
The utility model discloses a theory of operation:
the four cushion blocks are respectively installed on the floating ring through the bolt matched with the guide block assembly screw holes, the adjusting screws respectively penetrate through the cushion blocks to act on the circumferential direction of the supporting ring to simulate water pressure, the floating condition of the floating ring is monitored through data on a dial indicator beside each cushion block, and meanwhile, the gap between the sealing block and the antiwear ring is checked through a 0.05mm feeler gauge before and after the test so as to judge the followability of the spindle sealing floating ring.
The utility model has the advantages that:
the floating test can be carried out under the conditions that sealing water is not introduced and a main shaft sealing water tank cover plate is not installed again by using the test tool, and the floating condition of the main shaft sealing floating ring can be judged visually. The labor intensity of maintenance workers is effectively reduced, a large amount of human resources are saved, the maintenance reliability of the equipment is improved, and the maintenance construction period is saved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an installation schematic diagram of the present invention.
Fig. 3 is a front view of fig. 2.
Fig. 4 is an enlarged view of a portion a of fig. 2.
The device comprises a base, a bearing block, a bolt, a floating ring, a supporting ring and a dial indicator, wherein the bearing block is arranged at the bottom of the base, the bolt is arranged at the bottom of the base, the floating ring is arranged at the top of the base, the adjusting screw is arranged at the bottom of the base, the bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings in combination with specific embodiments. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in figure 1, the main shaft seal floating test tool of the bulb turbine unit comprises a cushion block 1 and an adjusting screw rod 2.
As shown in figures 2-4, the cushion block 1 is arranged on the floating ring 4 through a bolt 3 matched with a guide block assembling screw hole. The adjusting screw 2 can act on the supporting ring 5 through the cushion block 1, water pressure is simulated through fastening or loosening of the adjusting screw 2, and floating conditions of the floating ring 4 are monitored through data on the dial indicator 6 beside the cushion block 1. A plurality of groups of the test tools are arranged on the floating ring 4.
The size of the cushion block 1 needs to be manufactured according to the sizes of the stop pin hole and the guide block assembling screw hole, and the size of the cushion block is 115mm multiplied by 100mm multiplied by 20 mm. The steel material serial number of the cushion block 1 is Q235B. The adjusting screw 2 is an M18 bolt.
When carrying out the main shaft seal floating test, accomplished the assembly back of floating ring 4, support ring 5 and spring, will four respectively through bolt 3 the utility model discloses on four group's guide block assembly screws on floating ring 4 are installed to the test tool, through fastening or the pine to each adjusting screw 2 take off simulation water pressure to the floating condition of floating ring 4 is kept watch on to data through percentage table 6, simultaneously, experimental preceding, back respectively through 0.05 mm's clearance between clearance inspection seal block and the ring that wear-resistants, with the mobility of deciding main shaft seal floating ring 4.
The use of the test tool can carry out the floating test under the conditions that sealing water is not introduced and the cover plate of the spindle sealing water tank is not installed again, and can visually judge the floating condition of the spindle sealing floating ring 4. The labor intensity of maintenance workers is effectively reduced, a large amount of human resources are saved, the maintenance reliability of the equipment is improved, and the maintenance construction period is saved.
Through tests, the testing tool is used for the spindle sealing water leakage treatment of the unit No. 2 of the secondary hydropower station of the Mulberry river, the construction period is effectively saved by 6 days, meanwhile, a large amount of human resource investment is saved, the effective utilization time of the unit is increased, and the production benefit is improved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (5)
1. A main shaft seal floating test tool of a bulb tubular turbine unit is characterized by comprising a cushion block (1) and an adjusting screw rod (2), wherein the cushion block (1) is arranged on a floating ring (4) through a bolt (3) matched with a guide block assembling screw hole; the adjusting screw rod (2) can penetrate through the cushion block (1) to act on the supporting ring (5), and the floating condition of the floating ring (4) is monitored through data on the dial indicator (6) beside the cushion block (1).
2. The main shaft seal floating test tool of a bulb turbine unit according to claim 1, characterized in that a plurality of sets of the test tools are mounted on the floating ring (4).
3. The main shaft seal floating test tool of the bulb turbine unit as recited in claim 1, characterized in that the size of the cushion block (1) is made according to the size of the stop pin hole and the guide block assembling screw hole.
4. The main shaft seal floating test tool of the bulb turbine set according to claim 1 or 3, characterized in that the steel grade of the cushion block (1) is Q235B.
5. The main shaft seal floating test tool of the bulb turbine unit as recited in claim 1, characterized in that the adjusting screw (2) is an M18 bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022401823.9U CN213397508U (en) | 2020-10-26 | 2020-10-26 | Main shaft seal floating test tool of bulb tubular unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022401823.9U CN213397508U (en) | 2020-10-26 | 2020-10-26 | Main shaft seal floating test tool of bulb tubular unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213397508U true CN213397508U (en) | 2021-06-08 |
Family
ID=76191161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022401823.9U Withdrawn - After Issue CN213397508U (en) | 2020-10-26 | 2020-10-26 | Main shaft seal floating test tool of bulb tubular unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213397508U (en) |
-
2020
- 2020-10-26 CN CN202022401823.9U patent/CN213397508U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210608 Effective date of abandoning: 20240119 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20210608 Effective date of abandoning: 20240119 |