CN104481703A - Rotating speed sensing device - Google Patents
Rotating speed sensing device Download PDFInfo
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- CN104481703A CN104481703A CN201410642210.0A CN201410642210A CN104481703A CN 104481703 A CN104481703 A CN 104481703A CN 201410642210 A CN201410642210 A CN 201410642210A CN 104481703 A CN104481703 A CN 104481703A
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- revolution
- rotating speed
- sensing device
- speed sensing
- stop
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Abstract
The invention provides a rotating speed sensing device. The rotating speed sensing device includes: a body having a cavity, wherein the body comprises a first main oil hole, a second main oil hole and an outlet; and two rotating speed limiters, wherein the two rotating speed limiters are arranged in the body, the first main hole is connected with the oil inlet of one of the rotating speed limiters, the second main oil hole is connected with the oil inlet of the other one of the rotating speed limiters, and the oil outlets of the two rotating speed limiters are respectively with the oil outlet. The two rotating speed limiters are arranged in the rotating speed sensing device, and two oil ways are respectively controlled by the two rotating speed limiters, so when the rotating speed of a gas turbine is too high, the two rotating speed limiters simultaneously dump oil in order to improve the rotating speed reducing speed; and the rotating speed sensing device has the advantages of simple structure and small size, so the rotating speed sensing device can meet the use demands on high efficiency and small size.
Description
Technical field
The present invention relates to technical field of engines, in particular to a kind of revolution speed sensing device.
Background technique
At present, in gas turbine, all possess excess revolutions limitation function, when its rotating speed exceedes predefined value, drained the oil by revolution speed sensing device, fall slow-revving effect to reach.
In prior art, can only control the break-make of an oil circuit in revolution speed sensing device, when gas turbine rotary speed is too high, revolution speed sensing device cannot be drained the oil by oil circuit control in time, therefore, is difficult to the rotating speed effectively reducing gas turbine.
Summary of the invention
Main purpose of the present invention is to provide a kind of revolution speed sensing device, can not effectively fall slow-revving problem to solve prior art medium speed sensing device.
To achieve these goals, the invention provides a kind of revolution speed sensing device, this revolution speed sensing device comprises: body, has cavity, and body comprises the first main hydraulic fluid port, the second main hydraulic fluid port and outlet; Two revolution stops, two revolution stops are all arranged in body, first main hydraulic fluid port is communicated with the oiler of one of them revolution stop, and the second main hydraulic fluid port is communicated with the oiler of another revolution stop, and the oil outlet of two revolution stops all and outlet.
Further, the rotating speed that limits of two revolution stops is identical or different.
Further, at least one revolution stop is centrifugal fly weight formula revolution stop, and centrifugal fly weight formula revolution stop comprises: housing, housing is provided with oiler and oil outlet; Fuel Bleed Valve, Fuel Bleed Valve is arranged on oil outlet movably and sentences the aperture controlling oil outlet; Transmitting assemblies, transmitting assemblies is arranged in housing, and transmitting assemblies comprises centrifugal fly weight and input shaft, and centrifugal fly weight is connected with input shaft, and input shaft is used for being connected with the transmission shaft of the rotating machinery treating speed limit; Rotating speed limiter assembly, rotating speed limiter assembly is arranged in housing movably, and one end of rotating speed limiter assembly is connected with centrifugal fly weight, and the other end of rotating speed limiter assembly is connected with Fuel Bleed Valve.
As preferably, this transmitting assemblies comprises multiple centrifugal fly weight, and multiple centrifugal fly weight evenly circumference distribution is also connected with input shaft.
Further, this revolution stop comprises adjusting part, and adjusting part is connected with rotating speed limiter assembly, and adjusting part is used for the mobile position of adjusting rotary speed limiter assembly with the rotating speed limited of adjusting rotary speed limiter.
Further, this adjusting part comprises: adjusting screw, and adjusting screw is arranged on housing; First lever, the first lever is arranged in housing rotationally, and one end of adjusting screw abuts with one end of the first lever, and the other end of the first lever is connected with rotating speed limiter assembly.
Further, two revolution stops are centrifugal fly weight formula revolution stop, be provided with transmission unit between two revolution stops, the input shaft of one of them revolution stop is connected with transmission shaft and is connected with the input shaft of another revolution stop by transmission unit.
As preferably, this transmission unit comprises driving gear and driven gear.
Further, this rotating speed limiter assembly comprises: drive link, and one end of drive link abuts with the rotating center of centrifugal fly weight; Spring part, one end of spring part is fixed in housing, and the other end of spring part is connected with drive link; Second lever, the second lever is arranged in housing rotationally, and one end of the second lever is connected with Fuel Bleed Valve, and the other end of the second lever is arranged between drive link and spring part.
Further, this revolution stop also comprises temperature correction sheet, and temperature correction sheet is connected with spring part.
Further, this revolution stop also comprises bounding means, and bounding means to be arranged in housing and to be positioned at Fuel Bleed Valve one end away from oil outlet.
Further, revolution speed sensing device also comprises oil leakaging port, and oil leakaging port to be arranged on body and to arrange near input shaft.
Apply technological scheme of the present invention, a kind of revolution speed sensing device is provided, by arranging two revolution stops in this revolution speed sensing device, and control two oil circuits respectively by two revolution stops, make when the rotating speed of gas turbine is too high, can be drained the oil by two revolution stops simultaneously, fall slow-revving speed to improve; And this revolution speed sensing apparatus structure is simple, and overall volume is little, thus makes the present invention more can meet the user demand of revolution speed sensing device high efficiency, small volume.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the revolution speed sensing device provided according to the embodiment of the present invention;
Fig. 2 shows the left view of the revolution speed sensing device provided according to the embodiment of the present invention;
Fig. 3 shows the A-A of Fig. 2 medium speed sensing device to sectional view;
Fig. 4 shows the B-B of Fig. 2 medium speed sensing device to sectional view.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, housing; 11, oiler; 12, oil outlet; 20, transmitting assemblies; 21, centrifugal fly weight; 22, input shaft; 30, rotating speed limiter assembly; 31, drive link; 32, spring part; 33, the second lever; 40, adjusting part; 41, adjusting screw; 42, the first lever; 50, Fuel Bleed Valve; 60, temperature correction sheet; 70, bounding means; 80, transmission shaft; 90, oil leakaging port.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figures 1 to 4, the invention provides a kind of revolution speed sensing device, the embodiment of this revolution speed sensing device comprises: body, has cavity, and body comprises the first main hydraulic fluid port, the second main hydraulic fluid port and outlet; Two revolution stops, two revolution stops are all arranged in body, first main hydraulic fluid port is communicated with the oiler 11 of one of them revolution stop, and the second main hydraulic fluid port is communicated with the oiler 11 of another revolution stop, and the oil outlet 12 of two revolution stops all and outlet.
According to embodiment provided by the invention, a kind of revolution speed sensing device is provided, body arranges the first main hydraulic fluid port, the second main hydraulic fluid port and outlet, particularly, first main hydraulic fluid port can be communicated with the oil circuit of regulator for guide vane, second main hydraulic fluid port is communicated with the oil circuit of fuel pump and measuring apparatus, the break-make of the oil circuit of regulator for guide vane and fuel pump can be controlled with this respectively.Wherein, the revolution stop mentioned in two above-described embodiments is set in body, the restriction tachometer value of two revolution stops can be identical, also can be different, in embodiments of the present invention, the restriction tachometer value of two revolution stops is different, and the restriction rotating speed of the revolution stop be communicated with the first main hydraulic fluid port is greater than the restriction rotating speed of the revolution stop that hydraulic fluid port main with second is communicated with.For the ease of difference, the revolution stop be communicated with the first main hydraulic fluid port is revolution stop a, and the revolution stop be communicated with the second main hydraulic fluid port is revolution stop b.Transmission shaft 80 is connected with revolution stop a, revolution stop a drives revolution stop b to rotate by transmission unit, wherein, because the desired speed value of revolution stop b is less than revolution stop a, then when desired speed value higher than revolution stop b of the rotating speed of transmission shaft 80, the mode namely by reducing fuel delivery in fuel pump reduces engine speed; If when the rotating speed of transmission shaft 80 reduces not yet and rises to the desired speed value of revolution stop a, then reduce transmission shaft 80 rotating speed by revolution stop a and revolution stop b acting in conjunction, because the oiler 11 of revolution stop a is communicated with the oil circuit of regulator for guide vane, namely the angle by regulating the break-make of regulator for guide vane oil circuit to regulate power turbine guider guide vane, the method effectively can reduce engine speed, and makes transmission shaft 80 rotating speed be reduced to below the desired speed value of revolution stop b.The body of revolution speed sensing device also can arrange an oil leakaging port 90, and this oil leakaging port 90 is arranged near transmission shaft 80, can be discharged the excess oil of revolution stop a and transmission shaft 80 joint by this oil leakaging port 90.By arranging two revolution stops in this revolution speed sensing device, and controlling two oil circuits respectively by two revolution stops, making when the rotating speed of gas turbine is too high, can be drained the oil by two revolution stops simultaneously, fall slow-revving speed to improve; And this revolution speed sensing apparatus structure is simple, and overall volume is little, thus makes the present invention more can meet the user demand of revolution speed sensing device high efficiency, small volume.
Further, at least one revolution stop is centrifugal fly weight 21 formula revolution stop, and centrifugal fly weight 21 formula revolution stop comprises: housing 10, housing 10 is provided with oiler 11 and oil outlet 12; Fuel Bleed Valve 50, Fuel Bleed Valve 50 is arranged on oil outlet 12 movably and sentences the aperture controlling oil outlet 12; Transmitting assemblies 20, transmitting assemblies 20 is arranged in housing 10, and transmitting assemblies 20 comprises centrifugal fly weight 21 and input shaft 22, and centrifugal fly weight 21 is connected with input shaft 22, and input shaft 22 is for being connected with the transmission shaft 80 of the rotating machinery treating speed limit; Rotating speed limiter assembly 30, rotating speed limiter assembly 30 is arranged in housing 10 movably, and one end of rotating speed limiter assembly 30 is connected with centrifugal fly weight 21, and the other end of rotating speed limiter assembly 30 is connected with Fuel Bleed Valve 50.
According to revolution stop provided by the invention, set into hydraulic fluid port 11 and oil outlet 12 on the housing 10, transmitting assemblies 20 and rotating speed limiter assembly 30 is provided with in housing 10, one end of rotating speed limiter assembly 30 is connected with the centrifugal fly weight 21 of transmitting assemblies 20, the other end of rotating speed limiter assembly 30 is connected with Fuel Bleed Valve 50, transmitting assemblies 20 is connected with transmission shaft 80, and transmission shaft 80 drives the centrifugal fly weight 21 on transmitting assemblies 20 to rotate, and produces centrifugal force to make centrifugal fly weight 21.After rotating speed limiter assembly 30 is promoted by the thrust that produced by centrifugal force, drive Fuel Bleed Valve 50 to move, and oil outlet 12 is opened carry out Oil drain operation, thus the object controlling engine speed can be reached.
As preferred embodiment, this transmitting assemblies 20 comprises multiple centrifugal fly weight 21, and multiple centrifugal fly weight 21 evenly circumference distributes and is connected with input shaft 22.
According to revolution stop provided by the invention, by arranging multiple centrifugal fly weight 21 in this revolution stop, and multiple centrifugal fly weight 21 is uniformly distributed with the axis circumference of transmission shaft 80, make centrifugal fly weight 21 more steady in rotation process, so can either by increasing centrifugal fly weight 21 quantity to solve the problem increasing centrifugal force, can to avoid again increasing speed the volume of limiter, and on the contrary, centrifugal fly weight 21 volume can be reduced by said structure, and then the volume of revolution stop can be reduced, thus make the present invention more can meet the user demand of revolution stop.
Further, this revolution stop comprises adjusting part 40, and adjusting part 40 is connected with rotating speed limiter assembly 30, adjusting part 40 for the mobile position of adjusting rotary speed limiter assembly 30 with the rotating speed limited of adjusting rotary speed limiter.
Wherein, by arranging adjusting part 40 in revolution stop, and adjusting part 40 is connected with rotating speed limiter assembly 30, get final product the size that adjusting rotary speed limiter assembly 30 opens or closes the power of oil outlet 12, the break-make namely by controlling regulator for guide vane and fuel pump oil circuit reaches the object regulating transmission shaft 80 rotating speed.
Further, this adjusting part 40 comprises: adjusting screw 41, and adjusting screw 41 arranges on the housing 10; First lever 42, first lever 42 is arranged in housing 10 rotationally, and one end of adjusting screw 41 abuts with one end of the first lever 42, and the other end of the first lever 42 is connected with rotating speed limiter assembly 30.
In specific embodiment provided by the invention, adjusting part 40 comprises adjusting screw 41 and the first lever 42, wherein the rotating setting of adjusting screw 41 on the housing 10, first lever 42 is arranged in housing 10 rotationally, the position of one end that the first lever 42 abuts with adjusting screw 41 is regulated, the size of the power applied to rotating speed limiter assembly 30 with the other end adjusting the first lever 42 by adjusting screw 41.When revolution stop is static, the equal and opposite in direction of the power that the size of power that the first 42 pairs, lever rotating speed limiter assembly 30 applies should apply with centrifugal fly weight 21 pairs of rotating speed limiter assemblies 30.When the first lever 42 increases the power to rotating speed limiter assembly 30, the thrust of the mobile rotating speed limiter assembly 30 that centrifugal fly weight 21 is produced by centrifugal force also wants corresponding increase, thus completes the adjustment to revolution stop restriction rotating speed.Wherein, in order to space can be saved, the first lever 42 can be set to curved or V-shaped.
Further, two revolution stops are centrifugal fly weight 21 formula revolution stop, be provided with transmission unit between two revolution stops, the input shaft 22 of one of them revolution stop is connected with transmission shaft 80 and is connected with the input shaft 22 of another revolution stop by transmission unit.
Wherein, be provided with transmission unit between two revolution stops, the transmitting assemblies 20 of one of them revolution stop is connected with transmission shaft 80, and drives another revolution stop to rotate by transmission unit.Particularly, transmission is carried out by gear assembly, the centrifugal fly weight 21 of driving gear and revolution stop a is coaxially arranged, the centrifugal fly weight 21 of driven gear and revolution stop b is coaxially arranged, reach by adjusting gear velocity ratio the rotating speed that adjustment two revolution stops limit in the present invention, then revolution stop a can be made to drive the centrifugal fly weight 21 in revolution stop b to rotate by being meshed with driven gear by driving gear.
Further, this rotating speed limiter assembly 30 comprises: drive link 31, and one end of drive link 31 abuts with the rotating center of centrifugal fly weight 21; Spring part 32, one end of spring part 32 is fixed in housing 10, and the other end of spring part 32 is connected with drive link 31; Second lever 33, second lever 33 is arranged in housing 10 rotationally, and one end of the second lever 33 is connected with Fuel Bleed Valve 50, and the other end of the second lever 33 is arranged between drive link 31 and spring part 32.
In specific embodiment provided by the invention, this rotating speed limiter assembly 30 comprises drive link 31, spring part 32 and the second lever 33, wherein one end of drive link 31 and the rotating center of centrifugal fly weight 21 abut against, the other end of drive link 31 is connected with spring part 32, as shown in Figure 1, when transmission shaft 80 drives centrifugal fly weight 21 to rotate, the position that centrifugal fly weight 21 is connected with drive link 31 is moved to the left, thus promote drive link 31 in turn, spring part 32 moves, because the left end of spring part 32 is fixed, spring part 32 is compressed, the one end of the second lever 33 be connected with spring part 32 is moved to spring part 32 compression direction, and then the other end of the second lever 33 is rotated clockwise around immovable point, move right to drive Fuel Bleed Valve 50, and oil outlet 12 is opened, complete Oil drain operation.Adjusting part 40 regulates centrifugal fly weight 21 to open the size of the power of Fuel Bleed Valve 50 by the elongation of Regulation spring part 32 or decrement.Particularly, in order to ensure the stability that spring part 32 connects, be provided with lining at the two ends of spring part 32, the two ends of spring part 32 are connected with the first lever 42 and the second lever 33 respectively by lining.
Further, this revolution stop also comprises temperature correction sheet 60, and temperature correction sheet 60 is connected with spring part 32.Wherein, owing to considering that temperature variation can on the impact of rotating speed limiter assembly 30 inner spring part 32, temperature correction sheet 60 is also connected with spring part 32 by set temperature compensating plate 60 in housing 10, can reduce temperature variation to controlling the error brought of rotating speed with this.
Further, this revolution stop also comprises bounding means 70, and bounding means 70 to be arranged in housing 10 and to be positioned at Fuel Bleed Valve 50 one end away from oil outlet 12.The second lever 33 slewing area can be limited, to control the openings of sizes of oil outlet 12 by this bounding means 70.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a revolution speed sensing device, is characterized in that, described revolution speed sensing device comprises:
Body, has cavity, and described body comprises the first main hydraulic fluid port, the second main hydraulic fluid port and outlet;
Two revolution stops, two described revolution stops are all arranged in described body, described first main hydraulic fluid port is communicated with the oiler (11) of revolution stop described in one of them, described second main hydraulic fluid port is communicated with the oiler (11) of revolution stop described in another, the oil outlet (12) of two described revolution stops all with described outlet.
2. revolution speed sensing device according to claim 1, is characterized in that, the rotating speed that two described revolution stops limit is identical or different.
3. revolution speed sensing device according to claim 2, is characterized in that, revolution stop described at least one is centrifugal fly weight formula revolution stop, and described centrifugal fly weight formula revolution stop comprises:
Housing (10), described housing (10) is provided with described oiler (11) and described oil outlet (12);
Fuel Bleed Valve (50), described Fuel Bleed Valve (50) is arranged on described oil outlet (12) movably and sentences the aperture controlling described oil outlet (12);
Transmitting assemblies (20), described transmitting assemblies (20) is arranged in described housing (10), described transmitting assemblies (20) comprises centrifugal fly weight (21) and input shaft (22), described centrifugal fly weight (21) is connected with described input shaft (22), and described input shaft (22) is for being connected with the transmission shaft (80) of the rotating machinery treating speed limit;
Rotating speed limiter assembly (30), described rotating speed limiter assembly (30) is arranged in described housing (10) movably, one end of described rotating speed limiter assembly (30) is connected with described centrifugal fly weight (21), and the other end of described rotating speed limiter assembly (30) is connected with described Fuel Bleed Valve (50).
4. revolution speed sensing device according to claim 3, it is characterized in that, described transmitting assemblies (20) comprises multiple described centrifugal fly weight (21), and described multiple centrifugal fly weight (21) evenly circumference distributes and is connected with described input shaft (22).
5. revolution speed sensing device according to claim 3, it is characterized in that, described revolution stop comprises adjusting part (40), described adjusting part (40) is connected with described rotating speed limiter assembly (30), and described adjusting part (40) is for regulating the mobile position of described rotating speed limiter assembly (30) to regulate the rotating speed limited of described revolution stop.
6. revolution speed sensing device according to claim 5, is characterized in that, described adjusting part (40) comprising:
Adjusting screw (41), described adjusting screw (41) is arranged on described housing (10);
First lever (42), described first lever (42) is arranged in described housing (10) rotationally, one end of described adjusting screw (41) abuts with one end of described first lever (42), and the other end of described first lever (42) is connected with described rotating speed limiter assembly (30).
7. revolution speed sensing device according to claim 3, it is characterized in that, two described revolution stops are described centrifugal fly weight formula revolution stop, be provided with transmission unit between two described revolution stops, the input shaft (22) of revolution stop described in one of them is connected with described transmission shaft (80) and passes through described transmission unit and is connected with the input shaft (22) of revolution stop described in another.
8. revolution speed sensing device according to claim 7, is characterized in that, described transmission unit comprises driving gear and driven gear.
9. revolution speed sensing device according to claim 3, is characterized in that, described rotating speed limiter assembly (30) comprising:
Drive link (31), one end of described drive link (31) abuts with the rotating center of described centrifugal fly weight (21);
Spring part (32), one end of described spring part (32) is fixed in described housing (10), and the other end of described spring part (32) is connected with described drive link (31);
Second lever (33), described second lever (33) is arranged in described housing (10) rotationally, and one end of described second lever (33) is connected with described Fuel Bleed Valve (50), the other end of described second lever (33) is arranged between described drive link (31) and described spring part (32).
10. revolution speed sensing device according to claim 9, is characterized in that, described revolution stop also comprises temperature correction sheet (60), and described temperature correction sheet (60) is connected with described spring part (32).
11. revolution speed sensing devices according to claim 3, it is characterized in that, described revolution stop also comprises bounding means (70), and described bounding means (70) to be arranged in described housing (10) and to be positioned at described Fuel Bleed Valve (50) one end away from described oil outlet (12).
12. revolution speed sensing devices according to claim 3, it is characterized in that, described revolution speed sensing device also comprises oil leakaging port (90), and described oil leakaging port (90) to be arranged on described body and to arrange near described input shaft (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410642210.0A CN104481703B (en) | 2014-11-13 | 2014-11-13 | Revolution speed sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410642210.0A CN104481703B (en) | 2014-11-13 | 2014-11-13 | Revolution speed sensing device |
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| Publication Number | Publication Date |
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| CN104481703A true CN104481703A (en) | 2015-04-01 |
| CN104481703B CN104481703B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410642210.0A Active CN104481703B (en) | 2014-11-13 | 2014-11-13 | Revolution speed sensing device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5292225A (en) * | 1992-09-18 | 1994-03-08 | Westinghouse Electric Corp. | Overspeed protection apparatus for a turbomachine |
| US5509265A (en) * | 1995-01-23 | 1996-04-23 | Alliedsignal Inc. | Operational signal stability means for turbine |
| US6915639B1 (en) * | 2000-10-13 | 2005-07-12 | General Electric Company | Method and apparatus for gas turbine over-speed protection |
| US20110041512A1 (en) * | 2009-08-24 | 2011-02-24 | Honda Motor Co., Ltd. | Overspeed protection apparatus for gas turbine engine |
| CN102459822A (en) * | 2009-06-10 | 2012-05-16 | 斯奈克玛 | Method for testing the protection chain of a turbine engine against overspeed upon starting |
-
2014
- 2014-11-13 CN CN201410642210.0A patent/CN104481703B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5292225A (en) * | 1992-09-18 | 1994-03-08 | Westinghouse Electric Corp. | Overspeed protection apparatus for a turbomachine |
| US5509265A (en) * | 1995-01-23 | 1996-04-23 | Alliedsignal Inc. | Operational signal stability means for turbine |
| US6915639B1 (en) * | 2000-10-13 | 2005-07-12 | General Electric Company | Method and apparatus for gas turbine over-speed protection |
| CN102459822A (en) * | 2009-06-10 | 2012-05-16 | 斯奈克玛 | Method for testing the protection chain of a turbine engine against overspeed upon starting |
| US20110041512A1 (en) * | 2009-08-24 | 2011-02-24 | Honda Motor Co., Ltd. | Overspeed protection apparatus for gas turbine engine |
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| CN104481703B (en) | 2016-06-15 |
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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |
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