CN204646328U - Packing makes a concession structure - Google Patents
Packing makes a concession structure Download PDFInfo
- Publication number
- CN204646328U CN204646328U CN201520317259.9U CN201520317259U CN204646328U CN 204646328 U CN204646328 U CN 204646328U CN 201520317259 U CN201520317259 U CN 201520317259U CN 204646328 U CN204646328 U CN 204646328U
- Authority
- CN
- China
- Prior art keywords
- spring
- seal ring
- steam seal
- hole
- concession
- 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
Links
Abstract
The utility model relates to a kind of packing and makes a concession structure, comprise steam seal ring, be sheathed on labyrinth casing above steam seal ring, round bur tapping through hole in labyrinth casing, spring is provided with in through hole, the upper end of spring is provided with the housing screw be installed in through hole, the lower end of spring abuts with the top of steam seal ring, by the effect of housing screw and spring to steam seal ring initial impacting force.The beneficial effects of the utility model are: ensure to make a concession omnidistance yielding in gap and can not produce yield phenomenon as the spring sheet, the safety reliability of increase unit operation.
Description
Technical field
The utility model relates to a kind of packing and makes a concession structure.
Background technique
The yielding gap of the steam seal ring that most steam turbine set run adopts is 1.5 ~ 2mm, there are some problems in running, problem mainly causes amount of deflection to become large by rotor oscillation when critical speed of rotation or damage, the gap of 1.5 ~ 2mm is made a concession not, cause to produce between rotor and steam seal ring and rigidly touch mill, thus cause permanent bending of rotor; The gland sealing gear wearing and tearing of steam seal ring simultaneously, radial clearance becomes large, causes the packing leak-off flows when normal operation large, reduces overall efficiency; The High Temperature High Pressure gas spilt in cylinder in addition enters bearing housing and also causes oil mixed with water.
Model utility content
The technical problems to be solved in the utility model is: based on the problems referred to above, provides a kind of packing to make a concession structure.
The utility model solves the technological scheme that its technical problem adopts: a kind of packing makes a concession structure, comprise steam seal ring, be sheathed on labyrinth casing above steam seal ring, round bur tapping through hole in labyrinth casing, spring is provided with in through hole, the upper end of spring is provided with the housing screw be installed in through hole, the lower end of spring abuts with the top of steam seal ring, by the effect of housing screw and spring to steam seal ring initial impacting force.
The beneficial effects of the utility model are: ensure to make a concession omnidistance yielding in gap and can not produce yield phenomenon as the spring sheet, the safety reliability of increase unit operation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
Wherein: 1. steam seal ring, 2. labyrinth casing, 3. spring, 4. housing screw.
Embodiment
By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, and therefore it only shows the formation relevant with the utility model.
A kind of packing as shown in Figure 1 makes a concession structure, comprise steam seal ring 1, be sheathed on labyrinth casing 2 above steam seal ring 1, round bur tapping through hole in labyrinth casing 2, spring 3 is provided with in through hole, the upper end of spring 3 is provided with the housing screw 4 be installed in through hole, the lower end of spring 3 abuts with the top of steam seal ring 1, and by the effect of housing screw 4 and spring 3 to steam seal ring 1 one initial impacting forces, housing screw 4 can adjust initial impacting force.
Consider that steam seal ring is conducted oneself with dignity, second impacting force is more bigger than first.
Because the elasticity coefficient of spring is certain at a certain temperature, Linear proportional when therefore making a concession gap and impacting force, the structure of selected spring can be calculated by impacting force with comparalive ease, thus ensure that omnidistance yielding can not produce yield phenomenon as the spring sheet in 3mm.The safety reliability of unit operation can be increased like this, solve again the contradiction between the intensity of elastic part and preload easily.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this model utility technological thought, can carry out various change and amendment completely.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to right.
Claims (1)
1. a packing makes a concession structure, it is characterized in that: comprise steam seal ring (1), be sheathed on the labyrinth casing (2) of steam seal ring (1) top, labyrinth casing (2) interior round bur tapping through hole, spring (3) is provided with in through hole, the upper end of spring (3) is provided with the housing screw (4) be installed in through hole, the lower end of spring (3) abuts with the top of steam seal ring (1), by the effect of housing screw (4) and spring (3) to steam seal ring (1) initial impacting force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317259.9U CN204646328U (en) | 2015-05-15 | 2015-05-15 | Packing makes a concession structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317259.9U CN204646328U (en) | 2015-05-15 | 2015-05-15 | Packing makes a concession structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204646328U true CN204646328U (en) | 2015-09-16 |
Family
ID=54099092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520317259.9U Expired - Fee Related CN204646328U (en) | 2015-05-15 | 2015-05-15 | Packing makes a concession structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204646328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649685A (en) * | 2015-12-31 | 2016-06-08 | 沈阳航空航天大学 | Combined type brush sealing structure with radially adjustable brush wire bundle |
-
2015
- 2015-05-15 CN CN201520317259.9U patent/CN204646328U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649685A (en) * | 2015-12-31 | 2016-06-08 | 沈阳航空航天大学 | Combined type brush sealing structure with radially adjustable brush wire bundle |
| CN105649685B (en) * | 2015-12-31 | 2017-08-11 | 沈阳航空航天大学 | A kind of combined type brush seal structure of brush wire bundle radially adjustable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20160515 |