CN212642980U - Single-plunger pump for brake device of wind driven generator - Google Patents
Single-plunger pump for brake device of wind driven generator Download PDFInfo
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- CN212642980U CN212642980U CN202021934547.6U CN202021934547U CN212642980U CN 212642980 U CN212642980 U CN 212642980U CN 202021934547 U CN202021934547 U CN 202021934547U CN 212642980 U CN212642980 U CN 212642980U
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- plunger pump
- servo motor
- end cover
- piston
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model relates to a single plunger pump for aerogenerator brake equipment, including plunger pump cylinder body, plunger pump piston, plunger pump end cover, its characterized in that: the plunger pump is characterized in that one end, extending out of the plunger pump end cover, of the plunger pump piston is connected with the servo motor driving mechanism, the servo motor driving mechanism is connected with the front end of the plunger pump end cover through an intermediate connecting piece, the rear end of the plunger pump end cover is fixedly connected with the plunger pump cylinder body, and the servo motor driving mechanism drives the plunger pump piston to extend out and retract in the plunger pump cylinder body in a linear motion mode, so that the volume of a closed containing cavity between the plunger pump piston and the plunger pump cylinder body is changed along with the change of the volume, and oil absorption and. The utility model discloses a servo motor carries out the conversion of electricity-machinery, compares for brake equipment fuel feeding scheme with the tradition, and this single plunger pump adopts digital technique to carry out open loop proportional control, and the linearity is good, and control accuracy and reliability are high to simple structure is compact, convenient to use.
Description
Technical Field
The utility model relates to a single-plunger pump, especially a single-plunger pump for aerogenerator brake equipment.
Background
The hydraulic control of the existing wind driven generator brake device generally adopts a control strategy of a traditional hydraulic loop, namely the hydraulic control device comprises a hydraulic pump, an energy accumulator, a control valve group, a hydraulic pipeline, instrument accessories and the like. The control method is complex, precise control of the brake device is realized, the configuration of the control valve group is complex, the number of the included control valves is large, the types are complex, and the defects of overlarge volume, inconvenience in operation and maintenance and high maintenance cost exist.
Disclosure of Invention
The to-be-solved technical problem of the utility model is, overcome above prior art's defect, provide a single plunger pump for aerogenerator brake equipment, realize the direct accurate control to the control chamber.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a single plunger pump for aerogenerator brake equipment, includes plunger pump cylinder body, plunger pump piston, plunger pump end cover, its characterized in that: the plunger pump is characterized in that one end, extending out of the plunger pump end cover, of the plunger pump piston is connected with the servo motor driving mechanism, the servo motor driving mechanism is connected with the front end of the plunger pump end cover through an intermediate connecting piece, the rear end of the plunger pump end cover is fixedly connected with the plunger pump cylinder body, and the servo motor driving mechanism drives the plunger pump piston to extend out and retract in the plunger pump cylinder body in a linear motion mode, so that the volume of a closed containing cavity between the plunger pump piston and the plunger pump cylinder body is changed along with the change of the volume, and oil absorption and.
Furthermore, the servo motor driving mechanism consists of a servo motor, a speed reducer, a ball screw assembly, a guide rod, a cylindrical sliding block and a middle sliding block, the servo motor is fixedly connected with the middle sliding block, and an output shaft of the servo motor is connected with the front end of a piston of the plunger pump through the speed reducer and a coupler; the middle sliding block is connected with the end cover of the plunger pump through the cylindrical sliding block and the guide rod, the rear end of a piston of the plunger pump is fixedly connected with a lead screw of the ball screw assembly, and a lead screw nut of the ball screw assembly is fixedly connected with the rear part of a cylinder body of the plunger pump.
Furthermore, a bearing is arranged between the middle sliding block and the plunger pump piston, and a bearing fixing flange is arranged on the end face of the bearing and used for fixing the bearing and the middle sliding block.
Furthermore, a gasket is fixedly connected to the rear end of the lead screw of the ball screw assembly.
Furthermore, one end of the guide rod is fixedly connected to the plunger pump end cover, and the other end of the guide rod is fixedly connected to the guide rail fixing flange.
Furthermore, the axes of the servo motor, the speed reducer, the plunger pump piston and the ball screw assembly are overlapped.
Furthermore, the plunger pump end cover is connected with the plunger pump piston through a sealing assembly, and the sealing assembly is used for guiding and sealing the pump end cover and the plunger pump piston.
Furthermore, the plunger pump end cover is fixedly connected with the bracket.
Furthermore, the servo motor driving mechanism consists of a servo linear motor, a coupler and a sliding bearing, the servo linear motor is fixedly connected to the front end face of the plunger pump end cover through an intermediate connecting piece, a linear driving shaft of the servo linear motor is connected with the front end of a plunger pump piston, and the intermediate connecting piece is connected with the linear driving shaft through the sliding bearing; the servo linear motor directly drives the plunger pump piston to move linearly.
Furthermore, a pipe joint, a pressure measuring joint, a pressure sensor and a position sensor are arranged on the end faces of the closed cavities of the plunger pump cylinder body and the plunger pump piston.
The utility model has the advantages that:
1. the plunger pump adopts a servo motor to perform electro-mechanical-hydraulic conversion. Compared with the traditional hydraulic loop control scheme, the servo motor has good linearity and large linear range, and is convenient to realize high-precision open-loop proportional control by using a digital technology, so that the braking and releasing processes of the wind driven generator braking device are more stable;
2. the device has higher reliability by adopting the servo motor. The plunger pump piston rotates in the cylinder body and moves axially, so that an oil film in a working gap is formed and kept, the clamping force of hydraulic pressure and machinery is overcome, and the overall reliability of the single plunger pump is improved;
3. because the piston of the single-plunger pump has smaller rotational inertia, the brake device can achieve equivalent bandwidth;
4. the structure is more compact, the operation and the maintenance are more convenient, and the maintenance cost is lower.
Drawings
Fig. 1 is a sectional view of a single plunger pump structure for a brake device of a wind turbine generator according to an embodiment of the present invention;
FIG. 2 is a view in the direction A of FIG. 1;
fig. 3 is a view from direction B of fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the following description of the present invention will be made in more detail and fully, and the accompanying drawings show an embodiment of the present invention. The present invention can be realized in various forms, and is not limited to the present embodiment.
As shown in fig. 1 to 3, the utility model discloses a single plunger pump for aerogenerator brake equipment, including servo motor 1, reduction gear 2, guide rail mounting flange 3, guide arm 4, shaft coupling 5, parallel key 6, middle slider 7, bearing 8, plunger pump end cover 9, plunger pump piston 10, plunger pump cylinder body 11, ball screw assembly 12, gasket 13, two 14 of plunger pump cylinder body, support 15, cylinder slider 16, bearing mounting flange 17, seal assembly 18, interface 19.
The servo motor 1 is fixedly connected with the middle slide block 7, the output shaft of the servo motor 1 is connected with the speed reducer 2, and the output shaft of the speed reducer 2 is fixedly connected with the plunger pump piston 10 through the coupler 5 and the flat key 6; a bearing 8 is arranged between the middle sliding block 7 and the plunger pump piston 10, and a bearing fixing flange 17 is arranged on the end surface of the bearing 8 and used for mounting and fixing the bearing 8 and the middle sliding block 7; the guide rod 4 is connected with the middle slide block 7 through the cylindrical slide block 16, one end of the guide rod 4 is fixedly connected to the plunger pump end cover 9, and the other end of the guide rod 4 is fixedly connected to the guide rail fixing flange 3; the plunger pump end cover 9 is connected with the plunger pump piston 10 through a sealing assembly 18, the sealing assembly 18 is used for guiding and sealing the pump end cover 9 and the plunger pump piston 10, and the plunger pump end cover 9 is fixedly connected with the bracket 15; a screw nut in the ball screw assembly 12 is fixedly connected with the first plunger pump cylinder body 11; one end of a lead screw of the ball screw component 12 is fixedly connected with the plunger pump piston 10, and the other end is fixedly connected with a gasket 13; the plunger pump cylinder II 14 is fixedly connected with the plunger pump cylinder I11; the axes of the servo motor 1, the reducer 2, the plunger pump piston 10 and the ball screw assembly 12 are superposed with each other; and pipe joints and pressure measuring joints 19 are arranged on the end surfaces of the closed cavities of the second plunger pump cylinder body 14 and the plunger pump piston, so that the number and positions of the joints can be increased and reduced according to the requirements of customers, and detection devices such as a pressure sensor and a position sensor can be installed.
When the servo motor 1 drives the speed reducer 2 to rotate, the ball screw assembly 12 and the plunger pump piston 10 move axially together, the middle sliding block 7 also moves axially along the guide rod 4, and the screw rod in the ball screw assembly 12 is matched with the forward and reverse rotation of the servo motor 1 to perform stretching and retracting actions, so that the volume of a closed containing cavity between the plunger pump piston 10 and the plunger pump cylinder body II 14 is changed along with the change of the volume, and oil absorption and oil discharge are finally completed.
When the middle slide block 7, the plunger pump piston 10 and the lead screw extend out together, the right end of the plunger pump piston 10 is in contact with a lead screw nut in the ball screw assembly 12 for limiting;
when the middle slide block 7, the plunger pump piston 10 and the lead screw retract together, the gasket 13 contacts a lead screw nut in the ball screw assembly 12 for limiting; the generated axial and radial forces act on the screw nut, and the acting force is prevented from being transmitted on other mechanical structures.
The utility model discloses a structural design belongs to typical electromechanical liquid integrated mechanism, through servo motor and screw drive mechanism for closed appearance chamber volume between plunger pump piston and the cylinder body changes thereupon, and the slider slides along the guide arm in the middle of driving simultaneously, finally accomplishes oil absorption and oil extraction, realizes adopting servo motor to the direct accurate control in aerogenerator brake equipment control chamber.
The utility model discloses another technical scheme is proposed simultaneously, replaces above-mentioned servo motor, reduction gear and the ball subassembly of adopting with linear electric motor, also can realize linear motion, including servo linear electric motor, shaft coupling, slide bearing etc.. The servo linear motor is fixedly connected to the front end face of the plunger pump end cover through an intermediate connecting piece, a linear driving shaft of the servo linear motor is connected with the front end of a plunger pump piston, and the intermediate connecting piece is connected with the linear driving shaft through a sliding bearing; the servo linear motor directly drives the piston of the plunger pump to move linearly.
The above embodiments only illustrate several embodiments of the present invention, which cannot be understood as limitations of the present invention, and the novel single plunger pump of the present invention can be further modified based on the above embodiments, therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a single plunger pump for aerogenerator brake equipment, includes plunger pump cylinder body, plunger pump piston, plunger pump end cover, its characterized in that: the plunger pump is characterized in that one end, extending out of the plunger pump end cover, of the plunger pump piston is connected with the servo motor driving mechanism, the servo motor driving mechanism is connected with the front end of the plunger pump end cover through an intermediate connecting piece, the rear end of the plunger pump end cover is fixedly connected with the plunger pump cylinder body, and the servo motor driving mechanism drives the plunger pump piston to extend out and retract in the plunger pump cylinder body in a linear motion mode, so that the volume of a closed containing cavity between the plunger pump piston and the plunger pump cylinder body is changed along with the change of the volume, and oil absorption and.
2. The single plunger pump for a wind power generator brake apparatus according to claim 1, wherein: the servo motor driving mechanism consists of a servo motor, a speed reducer, a ball screw assembly, a guide rod, a cylindrical sliding block and a middle sliding block, wherein the servo motor is fixedly connected with the middle sliding block, and an output shaft of the servo motor is connected with the front end of a piston of the plunger pump through the speed reducer and a coupler; the middle sliding block is connected with the end cover of the plunger pump through the cylindrical sliding block and the guide rod, the rear end of a piston of the plunger pump is fixedly connected with a lead screw of the ball screw assembly, and a lead screw nut of the ball screw assembly is fixedly connected with the rear part of a cylinder body of the plunger pump.
3. The single plunger pump for a wind power generator brake apparatus according to claim 2, wherein: and a bearing is arranged between the middle sliding block and the plunger pump piston, and a bearing fixing flange is arranged on the end surface of the bearing and used for fixing the bearing and the middle sliding block.
4. The single plunger pump for a wind power generator brake apparatus according to claim 2, wherein: and a gasket is fixedly connected to the rear end of the lead screw of the ball screw assembly.
5. The single plunger pump for a wind power generator brake apparatus according to claim 2, wherein: one end of the guide rod is fixedly connected to the plunger pump end cover, and the other end of the guide rod is fixedly connected to the guide rail fixing flange.
6. The single plunger pump for a wind power generator brake apparatus according to claim 2, wherein: the axes of the servo motor, the speed reducer, the plunger pump piston and the ball screw assembly are overlapped.
7. The single plunger pump for a wind power generator brake apparatus according to claim 1, wherein: the plunger pump end cover is connected with the plunger pump piston through a sealing assembly, and the sealing assembly is used for guiding and sealing the pump end cover and the plunger pump piston.
8. The single plunger pump for a wind power generator brake apparatus according to claim 1, wherein: and the plunger pump end cover is fixedly connected with the bracket.
9. The single plunger pump for a wind power generator brake apparatus according to claim 1, wherein: the servo motor driving mechanism consists of a servo linear motor, a coupler and a sliding bearing, the servo linear motor is fixedly connected to the front end face of the plunger pump end cover through an intermediate connecting piece, a linear driving shaft of the servo linear motor is connected with the front end of a plunger pump piston, and the intermediate connecting piece is connected with the linear driving shaft through the sliding bearing; the servo linear motor directly drives the plunger pump piston to move linearly.
10. The single plunger pump for a wind power generator brake apparatus according to claim 1, wherein: and the end surfaces of the closed cavities of the plunger pump cylinder body and the plunger pump piston are provided with a pipe joint, a pressure measuring joint, a pressure sensor and a position sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021934547.6U CN212642980U (en) | 2020-09-07 | 2020-09-07 | Single-plunger pump for brake device of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021934547.6U CN212642980U (en) | 2020-09-07 | 2020-09-07 | Single-plunger pump for brake device of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212642980U true CN212642980U (en) | 2021-03-02 |
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ID=74762064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021934547.6U Active CN212642980U (en) | 2020-09-07 | 2020-09-07 | Single-plunger pump for brake device of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212642980U (en) |
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2020
- 2020-09-07 CN CN202021934547.6U patent/CN212642980U/en active Active
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