CN104481703B - Revolution speed sensing device - Google Patents
Revolution speed sensing device Download PDFInfo
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- CN104481703B CN104481703B CN201410642210.0A CN201410642210A CN104481703B CN 104481703 B CN104481703 B CN 104481703B CN 201410642210 A CN201410642210 A CN 201410642210A CN 104481703 B CN104481703 B CN 104481703B
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Abstract
The present invention provides a kind of revolution speed sensing device, and this revolution speed sensing device comprises: body, has cavity, and body comprises the first main oil mouth, the 2nd main oil mouth and outlet; Two speed restrictors, two speed restrictors are all arranged in body, first main oil mouth is connected with the oil mouth that enters of one of them speed restrictor, and the 2nd main oil mouth is connected with the oil mouth that enters of another speed restrictor, and the oil outlet of two speed restrictors is all connected with outlet. By arranging two speed restrictors in this revolution speed sensing device, and control two oil circuits respectively by two speed restrictors so that when the rotating speed of internal combustion turbine is too high, it is possible to put oil by two speed restrictors, to improve the speed reducing rotating speed simultaneously; 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-level efficiency, small volume.
Description
Technical field
The present invention relates to technical field of engines, specifically, it relates to a kind of revolution speed sensing device.
Background technology
At present, internal combustion turbine all possesses excess revolutions limitation function, when its rotating speed exceedes preset value, undertaken putting oil by revolution speed sensing device, to reach the effect reducing rotating speed.
In prior art, can only controlling 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 put oil by oil circuit control in time, therefore, it is difficult to effectively reduce the rotating speed of internal combustion turbine.
Summary of the invention
The main purpose of the present invention is to provide a kind of revolution speed sensing device, can not effectively reduce the problem of rotating speed to solve rotating speed sensing device in prior art.
In order to realize above-mentioned purpose, the present invention provides a kind of revolution speed sensing device, and this revolution speed sensing device comprises: body, has cavity, and body comprises the first main oil mouth, the 2nd main oil mouth and outlet; Two speed restrictors, two speed restrictors are all arranged in body, first main oil mouth is connected with the oil mouth that enters of one of them speed restrictor, and the 2nd main oil mouth is connected with the oil mouth that enters of another speed restrictor, and the oil outlet of two speed restrictors is all connected with outlet.
Further, the rotating speed that two speed restrictors limit is identical or different.
Further, at least one speed restrictor is centrifugal fly weight formula speed restrictor, and centrifugal fly weight formula speed restrictor comprises: housing, housing is provided with into oil mouth and oil outlet; Fuel Bleed Valve, Fuel Bleed Valve is arranged on the aperture that oil outlet sentences control oil outlet removablely; Transmission assembly, transmission assembly is arranged in housing, and transmission assembly comprises centrifugal fly weight and input shaft, and centrifugal fly weight is connected with input shaft, and input shaft is for being connected with the transmission shaft of the rotating mechanism treating speed limit; Rotating speed limiter assembly, rotating speed limiter assembly is arranged in housing removablely, 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 transmission assembly comprises multiple centrifugal fly weight, multiple centrifugal fly weight evenly circumference distribution and be connected with input shaft.
Further, this speed restrictor comprises adjustment assembly, regulates assembly to be connected with rotating speed limiter assembly, regulates assembly for the mobile position of adjusting rotary speed limiter assembly with the rotating speed limited of adjusting rotary speed slicer.
Further, this adjustment assembly comprises: set screw, and set screw is arranged on housing; First lever, the first lever is arranged in housing rotationally, and one end of set screw and one end of the first lever are to connecing, and the other end of the first lever is connected with rotating speed limiter assembly.
Further, two speed restrictors are centrifugal fly weight formula speed restrictor, being provided with driving section between two speed restrictors, the input shaft of one of them speed restrictor is connected with transmission shaft and is connected with the input shaft of another speed restrictor by driving section.
As preferably, this driving section comprises driving toothed gear and follower gear.
Further, this rotating speed limiter assembly comprises: transmission rod, and one end of transmission rod and the rotation center of centrifugal fly weight are to connecing; Spring part, one end of spring part is fixed in housing, and the other end of spring part is connected with transmission rod; 2nd lever, the 2nd lever is arranged in housing rotationally, and one end of the 2nd lever is connected with Fuel Bleed Valve, and the other end of the 2nd lever is arranged between transmission rod and spring part.
Further, this speed restrictor also comprises temperature compensation sheet, and temperature compensation sheet is connected with spring part.
Further, this speed restrictor also comprises spacing part, and spacing part is arranged in housing and is 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 is arranged on body and arranges near input shaft.
The technical scheme of application the present invention, a kind of revolution speed sensing device is provided, by arranging two speed restrictors in this revolution speed sensing device, and control two oil circuits respectively by two speed restrictors, make when the rotating speed of internal combustion turbine is too high, oil can be put, to improve the speed reducing rotating speed by two speed restrictors simultaneously; 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-level efficiency, small volume.
Accompanying drawing explanation
The Figure of description of the part forming the application is used to provide a further understanding of the present invention, and the 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 embodiments of the present invention;
Fig. 2 shows the left view of the revolution speed sensing device provided according to embodiments of the present invention;
Fig. 3 shows the A-A of rotating speed sensing device in Fig. 2 to sectional view;
Fig. 4 shows the B-B of rotating speed sensing device in Fig. 2 to sectional view.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, housing; 11, oil mouth is entered; 12, oil outlet; 20, transmission assembly; 21, centrifugal fly weight; 22, input shaft; 30, rotating speed limiter assembly; 31, transmission rod; 32, spring part; 33, the 2nd lever; 40, assembly is regulated; 41, set screw; 42, the first lever; 50, Fuel Bleed Valve; 60, temperature compensation sheet; 70, spacing part; 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 come the present invention is described in detail in conjunction with the embodiments.
As shown in Figures 1 to 4, the present invention provides a kind of revolution speed sensing device, and the embodiment of this revolution speed sensing device comprises: body, has cavity, and body comprises the first main oil mouth, the 2nd main oil mouth and outlet; Two speed restrictors, two speed restrictors are all arranged in body, first main oil mouth is connected with the oil mouth 11 that enters of one of them speed restrictor, and the 2nd main oil mouth is connected with the oil mouth 11 that enters of another speed restrictor, and the oil outlet 12 of two speed restrictors is all connected with outlet.
According to embodiment provided by the invention, a kind of revolution speed sensing device is provided, body arranges the first main oil mouth, the 2nd main oil mouth and outlet, specifically, can by the oil communication of the first main oil mouth and regulator for guide vane, by the oil communication of the 2nd main oil mouth and oil fuel pump and measuring apparatus, the break-make of the oil circuit of regulator for guide vane and oil fuel pump can be controlled respectively with this. Wherein, the speed restrictor mentioned is set in two above-described embodiments in body, the restriction tachometer value of two speed restrictors can be identical, also can be different, in embodiments of the present invention, the restriction tachometer value of two speed restrictors is different, and the restriction rotating speed of speed restrictor that is connected of oil mouth main with first is greater than the restriction rotating speed of the speed restrictor that oily mouth main with the 2nd is connected. For the ease of respectively, the speed restrictor that oil mouth main with first is connected is speed restrictor a, the speed restrictor that oil mouth main with the 2nd is connected is speed restrictor b. Transmission shaft 80 is connected with speed restrictor a, speed restrictor a drives speed restrictor b to rotate by driving section, wherein, owing to the desired speed value of speed restrictor b is less than speed restrictor a, then when the rotating speed of transmission shaft 80 is higher than the desired speed value of speed restrictor b, namely reduce motor speed by reducing the mode of fuel delivery in oil fuel pump; If when the rotating speed of transmission shaft 80 reduces and rise to the desired speed value of speed restrictor a not yet, then reduce transmission shaft 80 rotating speed by speed restrictor a and speed restrictor b acting in conjunction, due to the oil communication entering oil mouth 11 and regulator for guide vane of speed restrictor a, namely by regulating the break-make of regulator for guide vane oil circuit to regulate the angle of work turbine guider turning vane, the method can effectively reduce motor speed, and makes transmission shaft 80 rotating speed be reduced to below the desired speed value of speed restrictor b. Also can arranging an oil leakaging port 90 on the body of revolution speed sensing device, this oil leakaging port 90 is arranged near transmission shaft 80, can be discharged speed restrictor a and the excess oil of transmission shaft 80 junction by this oil leakaging port 90. By arranging two speed restrictors in this revolution speed sensing device, and control two oil circuits respectively by two speed restrictors so that when the rotating speed of internal combustion turbine is too high, it is possible to put oil by two speed restrictors, to improve the speed reducing rotating speed simultaneously; 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-level efficiency, small volume.
Further, at least one speed restrictor is centrifugal fly weight 21 formula speed restrictor, and centrifugal fly weight 21 formula speed restrictor comprises: housing 10, housing 10 is provided with into oil mouth 11 and oil outlet 12; Fuel Bleed Valve 50, Fuel Bleed Valve 50 is arranged on the aperture that oil outlet 12 sentences control oil outlet 12 removablely;Transmission assembly 20, transmission assembly 20 is arranged in housing 10, and transmission assembly 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 mechanism treating speed limit; Rotating speed limiter assembly 30, rotating speed limiter assembly 30 is arranged in housing 10 removablely, 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 speed restrictor provided by the invention, set into oil mouth 11 and oil outlet 12 on the housing 10, transmission assembly 20 and rotating speed limiter assembly 30 it is provided with in housing 10, one end of rotating speed limiter assembly 30 is connected with the centrifugal fly weight 21 of transmission assembly 20, the other end of rotating speed limiter assembly 30 is connected with Fuel Bleed Valve 50, transmission assembly 20 is connected with transmission shaft 80, and transmission shaft 80 drives the centrifugal fly weight 21 on transmission assembly 20 to rotate, so that centrifugal fly weight 21 produces centrifugal force. Rotating speed limiter assembly 30 is driven Fuel Bleed Valve 50 to move, and is opened by oil outlet 12 and carry out Oil drain operation such that it is able to reach the object of control motor speed after being promoted by the thrust produced by centrifugal force.
As preferred embodiment, this transmission assembly 20 comprises multiple centrifugal fly weight 21, and the even circumference distribution of multiple centrifugal fly weight 21 is also connected with input shaft 22.
According to speed restrictor provided by the invention, by arranging multiple centrifugal fly weight 21 in this speed restrictor, 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, the volume of speed restrictor can be avoided increasing again, and on the contrary, centrifugal fly weight 21 volume can be reduced by said structure, and then the volume of speed restrictor can be reduced, thus make the present invention more can meet the user demand of speed restrictor.
Further, this speed restrictor comprises adjustment assembly 40, regulates assembly 40 to be connected with rotating speed limiter assembly 30, regulates assembly 40 for the mobile position of adjusting rotary speed limiter assembly 30 with the rotating speed limited of adjusting rotary speed slicer.
Wherein, assembly 40 is regulated by arranging in speed restrictor, and adjustment assembly 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, namely reached the object regulating transmission shaft 80 rotating speed by the break-make of control regulator for guide vane and oil fuel pump oil circuit.
Further, this adjustment assembly 40 comprises: set screw 41, and set screw 41 arranges on the housing 10; First lever 42, first lever 42 is arranged in housing 10 rotationally, and one end of set screw 41 and one end of the first lever 42 are to connecing, and the other end of the first lever 42 is connected with rotating speed limiter assembly 30.
In specific embodiment provided by the invention, assembly 40 is regulated to comprise set screw 41 and the first lever 42, wherein the rotating setting of set screw 41 is on the housing 10, first lever 42 is arranged in housing 10 rotationally, by set screw 41 regulate on the first lever 42 with the position of set screw 41 to the one end connect, with the size of power adjusting the other end of the first lever 42 and applying to rotating speed limiter assembly 30. When speed restrictor is static, the first lever 42 should be equal to the size of the power that rotating speed limiter assembly 30 applies with centrifugal fly weight 21 to the size of the power that rotating speed limiter assembly 30 applies.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 that speed restrictor limits rotating speed. Wherein, in order to space can be saved, the first lever 42 can be set to curved or V-shaped.
Further, two speed restrictors are centrifugal fly weight 21 formula speed restrictor, being provided with driving section between two speed restrictors, the input shaft 22 of one of them speed restrictor is connected with transmission shaft 80 and is connected with the input shaft 22 of another speed restrictor by driving section.
Wherein, being provided with driving section between two speed restrictors, the transmission assembly 20 of one of them speed restrictor is connected with transmission shaft 80, and drives another speed restrictor to rotate by driving section. Specifically, transmission is carried out by gear assembly, the centrifugal fly weight 21 of driving toothed gear and speed restrictor a is coaxially arranged, the centrifugal fly weight 21 of follower gear and speed restrictor b is coaxially arranged, reach the rotating speed regulating two speed restrictors to limit in the present invention by adjusting gear transmitting ratio, then speed restrictor a can be made by being meshed with follower gear by driving toothed gear to drive the centrifugal fly weight 21 in speed restrictor b to rotate.
Further, this rotating speed limiter assembly 30 comprises: transmission rod 31, and one end of transmission rod 31 and the rotation center of centrifugal fly weight 21 are to connecing; 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 transmission rod 31; 2nd lever the 33, two lever 33 is arranged in housing 10 rotationally, and one end of the 2nd lever 33 is connected with Fuel Bleed Valve 50, and the other end of the 2nd lever 33 is arranged between transmission rod 31 and spring part 32.
In specific embodiment provided by the invention, this rotating speed limiter assembly 30 comprises transmission rod 31, spring part 32 and the 2nd lever 33, wherein one end of transmission rod 31 and the rotation center of centrifugal fly weight 21 abut against, the other end of transmission rod 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 being connected with transmission rod 31 in centrifugal fly weight 21 is moved to the left, thus promote transmission rod 31 in turn, spring part 32 moves, owing to the left end of spring part 32 is fixed, spring part 32 is compressed, the one end of the 2nd lever 33 being connected with spring part 32 is moved to spring part 32 compression direction, and then the other end making the 2nd lever 33 rotates clockwise around point of fixity, to drive Fuel Bleed Valve 50 to moving right, and oil outlet 12 is opened, complete Oil drain operation. the elongation of assembly 40 by regulating spring part 32 or draught is regulated to regulate centrifugal fly weight 21 to open the size of power of Fuel Bleed Valve 50. specifically, in order to ensure the stability that spring part 32 connects, being 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 2nd lever 33 respectively by lining.
Further, this speed restrictor also comprises temperature compensation sheet 60, and temperature compensation 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 compensation sheet 60 is also connected by set temperature compensating gauge 60 in housing 10 with spring part 32, can reduce temperature variation to the control error brought of rotating speed with this.
Further, this speed restrictor also comprises spacing part 70, and spacing part 70 is arranged in housing 10 and is positioned at Fuel Bleed Valve 50 one end away from oil outlet 12.The 2nd lever 33 can be limited by this spacing part 70 and rotate scope, to control the openings of sizes of oil outlet 12.
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 of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a revolution speed sensing device, comprising: body, has cavity, it is characterised in that, described revolution speed sensing device comprises:
Described body comprises the first main oil mouth, the 2nd main oil mouth and outlet;
Two speed restrictors, two described speed restrictors are all arranged in described body, described first main oil mouth is connected with oil mouth (11) that enters of speed restrictor described in one of them, described 2nd main oil mouth is connected with oil mouth (11) that enters of speed restrictor described in another, and the oil outlet (12) of two described speed restrictors is all connected with described outlet.
2. revolution speed sensing device according to claim 1, it is characterised in that, the rotating speed that two described speed restrictors limit is identical or different.
3. revolution speed sensing device according to claim 2, it is characterised in that, speed restrictor described at least one is centrifugal fly weight formula speed restrictor, and described centrifugal fly weight formula speed restrictor comprises:
Housing (10), enters oil mouth (11) and described oil outlet (12) described in described housing (10) is provided with;
Fuel Bleed Valve (50), described Fuel Bleed Valve (50) is arranged on the aperture that described oil outlet (12) sentences the described oil outlet of control (12) removablely;
Transmission assembly (20), described transmission assembly (20) is arranged in described housing (10), described transmission assembly (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 of the rotating mechanism treating speed limit (80);
Rotating speed limiter assembly (30), described rotating speed limiter assembly (30) is arranged in described housing (10) removablely, 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 transmission assembly (20) comprises multiple described centrifugal fly weight (21), and the even circumference distribution of described multiple centrifugal fly weight (21) is also connected with described input shaft (22).
5. revolution speed sensing device according to claim 3, it is characterized in that, described speed restrictor comprises adjustment assembly (40), described adjustment assembly (40) is connected with described rotating speed limiter assembly (30), and described adjustment assembly (40) is for regulating the mobile position of described rotating speed limiter assembly (30) to regulate the rotating speed limited of described speed restrictor.
6. revolution speed sensing device according to claim 5, it is characterised in that, described adjustment assembly (40) comprising:
Set screw (41), described set 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 set screw (41) and one end of described first lever (42) are to connecing, 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 speed restrictors are described centrifugal fly weight formula speed restrictor, being provided with driving section between two described speed restrictors, the input shaft (22) of speed restrictor described in one of them is connected with described transmission shaft (80) and passes through described driving section and be connected with the input shaft (22) of speed restrictor described in another.
8. revolution speed sensing device according to claim 7, it is characterised in that, described driving section comprises driving toothed gear and follower gear.
9. revolution speed sensing device according to claim 3, it is characterised in that, described rotating speed limiter assembly (30) comprising:
Transmission rod (31), one end of described transmission rod (31) and the rotation center of described centrifugal fly weight (21) are to connecing;
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 transmission rod (31);
2nd lever (33), described 2nd lever (33) is arranged in described housing (10) rotationally, and one end of described 2nd lever (33) is connected with described Fuel Bleed Valve (50), the other end of described 2nd lever (33) is arranged between described transmission rod (31) and described spring part (32).
10. revolution speed sensing device according to claim 9, it is characterised in that, described speed restrictor also comprises temperature compensation sheet (60), and described temperature compensation sheet (60) is connected with described spring part (32).
11. revolution speed sensing devices according to claim 3, it is characterized in that, described speed restrictor also comprises spacing part (70), and described spacing part (70) is arranged in described housing (10) and is 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) is arranged on described body and arranges 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 |
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| 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 CN104481703A (en) | 2015-04-01 |
| CN104481703B true 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 (4)
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5356949B2 (en) * | 2009-08-24 | 2013-12-04 | 本田技研工業株式会社 | Over-rotation prevention device for gas turbine engine |
-
2014
- 2014-11-13 CN CN201410642210.0A patent/CN104481703B/en active Active
Patent Citations (4)
| 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 |
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| CN104481703A (en) | 2015-04-01 |
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