CN203962055U - A kind of compact type emergency overspeed governor - Google Patents
A kind of compact type emergency overspeed governor Download PDFInfo
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- CN203962055U CN203962055U CN201420412917.8U CN201420412917U CN203962055U CN 203962055 U CN203962055 U CN 203962055U CN 201420412917 U CN201420412917 U CN 201420412917U CN 203962055 U CN203962055 U CN 203962055U
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- spring
- flying barrel
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Abstract
The utility model relates to a kind of compact type emergency overspeed governor, comprise housing, also it has a through slot to housing on ring-shaped periphery ringwise, is embedded with flying barrel in through slot, and described flying barrel is connected on housing by pin and flying barrel swings centered by pin in through slot; The bottom of described through slot has hole, in hole, coordinate and be provided with spring, spring is fixed in hole by screw-in screw, one end of spring and screw-in screw offset, the other end of spring and one end of flying barrel offset, the other end of flying barrel contacts with housing, and wherein, the center of gravity of spring and flying barrel lays respectively at the both sides of pin.Compared with prior art, the utility model has been avoided the requirement of punching on rotor, has ensured the intensity of rotor; And rotor interfixes by the Placement of key, when having ensured that both connect precision, realize again the possibility of applying in different rotor, realize the secondary utilization of emergency overspeed governor, reduce cost, improve efficiency.
Description
Technical field
The utility model relates to a kind of emergency overspeed governor, and this device is widely used in, in the rotation such as steam turbine, compressor turbomachinery, belonging to a part for unit safety protective system.
Background technique
Steam turbine, the turbomachineries such as compressor are the machinery of High Rotation Speed, in the time of normal work, emergency overspeed governor with work together with the regulating system of hydraulic type emergency governor pilot valve, in the time of load dump, spinner velocity increases fast, as unhappy in regulating system action, rotor speed may be raised to unallowable numerical value, and damage rotor, even cause the accidents such as unit damage, and emergency overspeed governor is exactly a kind of overspeed governor switch, emergency overspeed governor running in the time that rotor speed exceedes certain speed, to close rapidly main inlet throttle-stop valve, regulate valve and the non-return flap that draws gas, cut off the vapour source that all may enter steam turbine, realize emergency shutdown.
Conventional emergency overspeed governor is integrated emergency overspeed governor in the market, structure is to punch on rotor, flyball and spring are installed in hole, and flyball and spring are bolted in hole, then do overspeed trip test, but, on rotor, punching can reduce the intensity of rotor greatly, if have the hole of more complicated on rotor, scrapping possibility and will greatly improving of rotor, has increased the danger of equipment operation, and, integrated emergency overspeed governor can not directly be changed, if changed, will scrap rotor.
The utility model proposes and a kind ofly can ensure that rotor strength can be applied to again the compact type emergency overspeed governor of variety classes rotor.
Summary of the invention
In order to solve above-mentioned technical problem, the utility model proposes and a kind ofly can ensure that rotor strength can be applied to again the compact type emergency overspeed governor of variety classes rotor.
To achieve the above object, the utility model has adopted following technological scheme:
A kind of compact type emergency overspeed governor, comprises housing, and also it has a through slot to housing on ring-shaped periphery ringwise, is embedded with flying barrel in through slot, and described flying barrel is connected on housing by pin and flying barrel swings centered by pin in through slot; The bottom of described through slot has hole, in hole, coordinate and be provided with spring, spring is fixed in hole by screw-in screw, one end of spring and screw-in screw offset, the other end of spring and one end of flying barrel offset, the other end of flying barrel contacts with housing, and wherein, the center of gravity of spring and flying barrel lays respectively at the both sides of pin.Operation principles of the present utility model is: when the rotating speed of rotor is during in normal value, spring props up flying barrel bottom surface all the time, between flying barrel and housing in metastable state, in the time of the faster rotational speed of rotor, the centrifugal force that is fixed on epitrochanterian flying barrel increases, in the time that the centrifugal force of flying barrel is greater than the pretightening force of spring, be positioned at again the both sides of pin due to the center of gravity of spring and flying barrel, the flying barrel bottom surface contacting with housing before making separates with housing, and before with housing from flying barrel bottom surface contact with housing, the flying barrel part contacting with housing before making flies out, then the switch touching on emergency governor pilot valve makes to disconnect emergency governor pilot valve, realize emergency shutdown, the requirement of punching on rotor in prior art has also been avoided in such structure setting, ensure the intensity of rotor, and, spring is fixed in hole by screw-in screw, so only need be by adjusting the screw-in depth of screw-in screw or changing different springs, control the speed that flies out of flying barrel, thereby realize and stopping in emergency under the rotating speed that rotor is required in difference.
As preferably, the bottom surface of described through slot comprises inclined-plane A and inclined-plane B, and described hole is arranged on B place, inclined-plane, and flying barrel contacts with inclined-plane A.
As preferably, described housing is connected on rotor by key Placement, and housing is bolted on rotor.Housing and rotor adopt the Placement of key to interfix, and are realized further and being fixed by bolt, in having ensured that both connect precision, realize again the possibility that the utility model is applied in different rotor, realize the secondary utilization of emergency overspeed governor, reduced cost, improved efficiency.
The utility model has been owing to having adopted above technological scheme, avoided the requirement of punching on rotor in prior art, ensured the intensity of rotor; And the utility model and rotor interfix by the Placement of key; in having ensured that both connect precision; realize again the possibility that the utility model is applied in different rotor; realize the secondary utilization of emergency overspeed governor; reduce cost; improved efficiency, and the utility model is as long as by adjusting the degree that screws of screw or changing spring and just can adjust advantages such as shutting down rotating speed.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram that the utility model housing coordinates with flying barrel;
Fig. 2 is A-A sectional view in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is made a detailed explanation.
Embodiment 1: a kind of compact type emergency overspeed governor, as shown in Figure 1-2, comprise housing 1, have a through slot 11 in housing 1 upper end, in through slot 11, be embedded with flying barrel 2, described flying barrel 2 be connected on housing 1 by pin 3 and flying barrel 2 taking pin 3 as rotating center; The bottom surface of described through slot 11 comprises inclined-plane A111 and inclined-plane B112, and flying barrel 2 bottom surfaces and inclined-plane A111 offset, flying barrel 2 bottom surfaces and inclined-plane B112 with from; On described inclined-plane, B112 place has hole 12, and in hole 12, interior cooperation is provided with spring 4, and spring 4 is fixed in hole 12 by screw-in screw 5, and the upper end part of spring 4 protrudes from inclined-plane B112, and described spring 4 is vertical and the bottom surface of withstanding flying barrel 2; The center of gravity of spring 4 and flying barrel 2 lays respectively at the both sides of pin 3; Described housing 1 is connected on rotor by key Placement, and housing 1 is bolted on rotor.
Operation principles of the present utility model is: when the rotating speed of rotor is during in normal value, spring 4 withstands flying barrel 2 bottom surfaces all the time, between flying barrel 2 and housing 1 in metastable state, in the time of the faster rotational speed of rotor, the centrifugal force that is fixed on epitrochanterian flying barrel 2 increases, in the time that the centrifugal force of flying barrel 2 is greater than the pretightening force of spring 4, lay respectively at again the both sides of pin 3 due to the center of gravity of spring 4 and flying barrel 2, flying barrel 2 bottom surfaces that contact with inclined-plane A111 before making separate with inclined-plane A111, and before with inclined-plane B112 from flying barrel 2 bottom surfaces contact with inclined-plane B112, make A111 corresponding flying barrel 2 parts in inclined-plane fly out, then the switch touching on emergency governor pilot valve makes to disconnect emergency governor pilot valve, realize emergency shutdown.
Claims (3)
1. a compact type emergency overspeed governor, it is characterized in that: comprise housing (1), also it has a through slot (11) to housing (1) on ring-shaped periphery ringwise, in through slot (11), be embedded with flying barrel (2), described flying barrel (2) is connected to housing (1) above by pin (3) and flying barrel (2) swings centered by pin (3) in through slot (11); The bottom of described through slot (11) has hole (12), in hole (12), coordinate and be provided with spring (4), spring (4) is fixed in hole (12) by screw-in screw (5), one end of spring (4) and screw-in screw (5) offset, one end of the other end of spring (4) and flying barrel (2) offsets, the other end of flying barrel (2) contacts with housing (1), wherein, the center of gravity of spring (4) and flying barrel (2) lays respectively at the both sides of pin (3).
2. a kind of compact type emergency overspeed governor according to claim 1, it is characterized in that: the bottom surface of described through slot (11) comprises inclined-plane A (111) and inclined-plane B (112), described hole (12) is arranged on inclined-plane B (112) and locates, and flying barrel (2) contacts with inclined-plane A (111).
3. a kind of compact type emergency overspeed governor according to claim 1, it is characterized in that: described housing (1) is connected on rotor by key Placement, and housing (1) is bolted on rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412917.8U CN203962055U (en) | 2014-07-24 | 2014-07-24 | A kind of compact type emergency overspeed governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412917.8U CN203962055U (en) | 2014-07-24 | 2014-07-24 | A kind of compact type emergency overspeed governor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203962055U true CN203962055U (en) | 2014-11-26 |
Family
ID=51922654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420412917.8U Active CN203962055U (en) | 2014-07-24 | 2014-07-24 | A kind of compact type emergency overspeed governor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203962055U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088676A (en) * | 2014-07-24 | 2014-10-08 | 浙江华元汽轮机械有限公司 | Compact emergency governor |
-
2014
- 2014-07-24 CN CN201420412917.8U patent/CN203962055U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088676A (en) * | 2014-07-24 | 2014-10-08 | 浙江华元汽轮机械有限公司 | Compact emergency governor |
| CN104088676B (en) * | 2014-07-24 | 2015-08-26 | 浙江华元汽轮机械有限公司 | A kind of compact type emergency overspeed governor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |