阅读说明：本技术 一种水力测功器的进排水阀控制装置 (Water inlet and outlet valve control device of hydraulic dynamometer ) 是由 韩卿洋 刘君 邓鹏远 宋月杰 余道刚 赵少华 张学军 程龙 陈龙 王璞尧 吴哲 于 2020-05-21 设计创作，主要内容包括：一种水力测功器的进排水阀控制装置,它涉及一种进排水阀控制装置。本发明解决了现有的进排水阀控制装置成本高以及抗偏离能力较差的问题。所述固定架的上端安装有摆动缸组件,所述摆动缸组件右侧的固定架上端外壁上设置有向上斜伸的加固条,所述加固条后侧的固定架上端外壁上设置有压紧块,所述压紧块的上端外壁上设置有支撑板,所述支撑板的上端外壁上设置有油缸,所述油缸和支撑板通过固定螺栓固定连接,控制系统用来控制水箱的进水、出水阀门,本新型水力测功器控制系统采用集成液压伺服系统控制,有从独立的油源,工作易于规范化,大大减小工作量及相关工作的复杂程度。本发明用于控制水力测功器的进排水阀。(A water inlet and outlet valve control device of a hydraulic dynamometer relates to a water inlet and outlet valve control device. The invention solves the problems of high cost and poor deviation resistance of the existing water inlet and outlet valve control device. The hydraulic dynamometer control system is characterized in that a swing cylinder assembly is installed at the upper end of the fixing frame, a reinforcing strip extending upwards and obliquely is arranged on the outer wall of the upper end of the fixing frame on the right side of the swing cylinder assembly, a pressing block is arranged on the outer wall of the upper end of the fixing frame on the rear side of the reinforcing strip, a supporting plate is arranged on the outer wall of the upper end of the pressing block, an oil cylinder is arranged on the outer wall of the upper end of the supporting plate, the oil cylinder and the supporting plate are fixedly connected through a fixing bolt, and the control system is used for controlling water inlet and outlet valves of a water tank. The invention is used for controlling the water inlet and outlet valves of the hydraulic dynamometer.)

1. A water inlet and outlet valve control device of a hydraulic dynamometer comprises a fixed frame (14) and a swinging cylinder assembly (15), and is characterized in that: the upper end of the fixed frame (14) is provided with a swing cylinder assembly (15), the outer wall of the upper end of the fixed frame (14) at the right side of the swing cylinder assembly (15) is provided with a reinforcing strip (12) which extends obliquely upwards, the outer wall of the upper end of the fixed frame (14) at the rear side of the reinforcing strip (12) is provided with a pressing block (3), the outer wall of the upper end of the pressing block (3) is provided with a supporting plate (2), the outer wall of the upper end of the supporting plate (2) is provided with an oil cylinder (1), the oil cylinder (1) and the supporting plate (2) are fixedly connected through a fixing bolt (11), the outer wall of the upper end of the pressing block (3) penetrates through the supporting plate (2) and is fixedly connected with the oil cylinder (1), the pressing block (3) and the oil cylinder (1) are fixedly connected through a locking nut (13), and the supporting plate, be provided with fixed rack (9) on the lower extreme outer wall of compact heap (3), be provided with link (4) on the front end outer wall of fixed rack (9), fixed bolster (6) have been cup jointed to the front end outside of link (4), be provided with pivot (5) on link (4) the rear end outer wall of fixed bolster (6) inside, be provided with semicircle gear (10) on the lower extreme outer wall of fixed rack (9), be provided with bottom plate (8) on mount (14) upper end outer wall of semicircle gear (10) downside.

2. The intake/discharge valve control device of a hydraulic dynamometer according to claim 1, wherein: the support bars (7) are arranged in two, the support bars (7) are arranged on the right side of the swing cylinder assembly (15), and the bottom plate (8) and the fixed support (6) are fixedly connected through the support bars (7).

3. The intake/discharge valve control device of a hydraulic dynamometer according to claim 1, wherein: the swing cylinder assembly is characterized in that a butterfly valve is arranged on the outer wall of the right end of the swing cylinder assembly (15), the swing cylinder assembly (15) is connected with the butterfly valve through a spline coupler, the swing cylinder assembly (15) is controlled to rotate by a servo valve so as to control the rotation of the butterfly valve, and the fixed rack (9) is arranged on the outer wall of the upper end of the spline coupler.

4. The intake/discharge valve control device of a hydraulic dynamometer according to claim 3, wherein: the spline coupler is characterized in that outer teeth are arranged on the radial outer circle of the spline coupler, a fixed rack (9) which is arranged at the end of a piston rod of the oil cylinder (1) is arranged above the outer teeth, and the outer teeth are meshed with the fixed rack (9) to realize mechanical locking.

5. The intake/discharge valve control device of a hydraulic dynamometer according to claim 1, wherein: the outer wall of the right end of the fixing frame (14) is provided with a connecting pipe, and the right end of the connecting pipe is connected with a self-contained oil supply pump station.

6. The intake/discharge valve control device of a hydraulic dynamometer according to claim 1, wherein: the speed of adjusting the full stroke inside the swing cylinder assembly (15) is less than one second, the control precision is less than three percent, a sensor is arranged on the swing cylinder assembly (15), and the control precision of the angle sensor is less than three percent, zero and zero.

Technical Field

The invention belongs to the related technical field of dynamometer, and particularly relates to a water inlet and outlet valve control device of a hydraulic dynamometer.

Background

The hydraulic dynamometer is widely applied to the field of power testing of various prime movers at present, can measure the output power of the prime mover as an effective load of a load test of the prime mover, and is matched with the prime mover to carry out a plurality of working condition point transformation tests.

The prior water inlet and outlet valve control device technology of the hydraulic dynamometer has the following problems: at present, the domestic common water inlet and outlet valve actuating mechanisms comprise a pneumatic actuating mechanism and an electric actuating mechanism. Although the pneumatic actuator is safe and convenient to operate, the additional valve positioner is required, the additional air source is additionally provided, the huge cost is increased, and when a large pneumatic actuator is used, the air is required to fill the air cylinder and exhaust, so the response is slow, the control precision is poor, and the deviation resistance of the pneumatic actuator is poor due to the compressibility of the air.

Disclosure of Invention

The invention aims to provide a water inlet and outlet valve control device of a hydraulic dynamometer, which aims to solve the problems of high cost and poor deviation resistance of the water inlet and outlet valve control device in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a water inlet and outlet valve control device of a hydraulic dynamometer comprises a fixed frame and a swing cylinder assembly, wherein the upper end of the fixed frame is provided with a swing cylinder assembly, the outer wall of the upper end of the fixed frame on the right side of the swing cylinder assembly is provided with a reinforcing strip extending upwards in an inclined manner, the outer wall of the upper end of the fixed frame on the rear side of the reinforcing strip is provided with a pressing block, the outer wall of the upper end of the pressing block is provided with a supporting plate, the outer wall of the upper end of the supporting plate is provided with an oil cylinder, the oil cylinder and the supporting plate are fixedly connected through a fixing bolt, the outer wall of the upper end of the pressing block penetrates through the supporting plate and is fixedly connected with the oil cylinder, the pressing block and the oil cylinder are fixedly connected through a locking nut, the supporting plate and the fixed frame are fixedly connected through a supporting rib, the outer wall of the lower end of, the fixing bracket is characterized in that a shaft pin is arranged on the outer wall of the rear end of the connecting bracket in the fixing bracket, a semicircular gear is arranged on the outer wall of the lower end of the fixing rack, and a bottom plate is arranged on the outer wall of the upper end of the fixing bracket on the lower side of the semicircular gear.

Preferably, the supporting ribs are arranged in two, the two supporting ribs are arranged on the right side of the swing cylinder assembly, and the bottom plate and the fixed support are fixedly connected through the supporting ribs.

Preferably, a butterfly valve is arranged on the outer wall of the right end of the swing cylinder assembly, the swing cylinder assembly is connected with the butterfly valve through a spline coupler, the swing cylinder assembly is controlled by a servo valve to rotate so as to control the rotation of the butterfly valve, and the fixed rack is arranged on the outer wall of the upper end of the spline coupler.

Preferably, the spline coupler is provided with external teeth on a radial outer circle, a fixed rack arranged at the end of a piston rod of the oil cylinder is arranged above the external teeth, and the external teeth and the fixed rack are meshed to realize mechanical locking.

Preferably, the outer wall of the right end of the fixing frame is provided with a connecting pipe, and the right end of the connecting pipe is connected with a self-contained oil supply pump station.

Preferably, the speed of adjusting the internal full stroke of the swing cylinder assembly is less than one second, the control precision is less than three percent of zero, a sensor is arranged on the swing cylinder assembly, and the control precision of the angle sensor is less than three percent of zero.

Compared with the prior art, the invention provides a water inlet and outlet valve control device of a hydraulic dynamometer, which has the following beneficial effects:

the invention aims to provide a novel water inlet and outlet valve control device of a hydraulic dynamometer, a control system is used for controlling a water inlet valve and a water outlet valve of a water tank, the novel hydraulic dynamometer control system adopts an integrated hydraulic servo system for control, an independent oil source is provided, the work is easy to standardize, the workload and the complexity of related work are greatly reduced, the regulation performance is greatly improved, the failure rate is reduced, and the control effect of high precision and high speed can be achieved, the control device comprises a self-contained oil supply pump station and an electro-hydraulic actuating mechanism, the traditional water inlet valve actuating mechanism comprises an electric actuating mechanism and a pneumatic actuating mechanism, the control precision of the electric actuating mechanism is 1 percent, the whole action time is 12s, the opening change of the water inlet valve is difficult to follow the requirement of the rotating speed due to the slow response action of the electric actuating mechanism, the whole action time of the electric actuating mechanism is less than 1s, the control precision is 0.3 percent, the valve position feedback precision is less than 0.03 percent, the response time and the control precision performance of the self-contained electro-hydraulic actuator are far higher than those of an electric actuator, a servo proportional valve is used as a control element, the response time is only 20 milliseconds, and the energy accumulator, the servo proportional valve and a swing cylinder are matched, so that the quick response characteristic of the self-contained electro-hydraulic actuator is ensured, in practical application, the actuator is provided with a set of closed-loop control system to form a quick closed-loop circuit, the response is quick, the requirements of quick response and quick action of a unit are met, meanwhile, the closed-loop system formed by an upper computer and an angle sensor also ensures the control precision of the actuator on the valve position, the condition of sudden unloading in practical application is considered, and the condition that the valve has a fully-opened state within a short time (1s) is met, the invention designs and adds the energy accumulator and auxiliary equipment in, the snap function can be satisfied.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

FIG. 1 is a schematic diagram of a pump station of a water inlet and outlet valve control device of a hydraulic dynamometer according to the present invention;

FIG. 2 is a schematic diagram of a front partial internal structure of a water inlet and outlet valve control device of a hydraulic dynamometer according to the present invention;

FIG. 3 is a schematic side view of a partial internal structure of a water inlet/outlet valve control device of a hydraulic dynamometer according to the present invention;

FIG. 4 is a schematic structural diagram of a hydraulic principle of a water inlet and outlet valve control device of a hydraulic dynamometer according to the present invention;

in the figure: 1. an oil cylinder; 2. a support plate; 3. a compression block; 4. a connecting frame; 5. a shaft pin; 6. fixing a bracket; 7. supporting ribs; 8. a base plate; 9. fixing a rack; 10. a semi-circular gear; 11. fixing the bolt; 12. reinforcing the strips; 13. locking the nut; 14. a fixed mount; 15. the cylinder assembly is swung.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a water inlet and outlet valve control device of a hydraulic dynamometer comprises a fixed frame 14 and a swing cylinder assembly 15, wherein the upper end of the fixed frame 14 is provided with the swing cylinder assembly 15, the internal full stroke adjusting speed of the swing cylinder assembly 15 is less than one second, the control precision is less than three-hundredth, the swing cylinder assembly 15 is provided with a sensor, the control precision of an angle sensor is less than three-hundredth, the response time and the control precision performance of the swing cylinder assembly 15 are far higher than those of an electric actuating mechanism, so that the swing cylinder assembly 15 is used more rapidly, the outer wall of the upper end of the fixed frame 14 on the right side of the swing cylinder assembly 15 is provided with a reinforcing strip 12 which extends upwards in an inclined manner, the outer wall of the upper end of the fixed frame 14 on the rear side of the reinforcing strip 12 is provided with a pressing block 3, the outer wall of the upper end of the pressing block 3 is, the connecting pipe is arranged on the outer wall of the right end of the fixing frame 14, the right end of the connecting pipe is connected with a self-contained oil supply pump station, oil is supplied to the oil cylinder 1 for use through the self-contained oil supply pump station, the outer wall of the upper end of the pressing block 3 penetrates through the supporting plate 2 and is fixedly connected with the oil cylinder 1, the pressing block 3 and the oil cylinder 1 are fixedly connected through the locking nut 13, the supporting plate 2 and the fixing frame 14 are fixedly connected through the supporting ribs 7, and the fixing rack 9 is arranged on the outer wall of the lower end of the. A water inlet and outlet valve control device of a hydraulic dynamometer is characterized in that a butterfly valve is arranged on the outer wall of the right end of a swing cylinder assembly 15, the swing cylinder assembly 15 is connected with the butterfly valve through a spline coupler, the swing cylinder assembly 15 is controlled to rotate by a servo valve to control the butterfly valve to rotate, a fixed rack 9 is arranged on the outer wall of the upper end of the spline coupler and forms a closed loop with the servo valve through angle sensor feedback to ensure that the butterfly valve can be stabilized to a certain balance position, external teeth are arranged on the radial outer circle of the spline coupler, the fixed rack 9 arranged at the end of a piston rod of an oil cylinder 1 is arranged above the external teeth, the external teeth and the fixed rack 9 are meshed to realize mechanical locking, when the system is in a power failure state, the piston rod of a locking cylinder is completely retracted, the external teeth are separated from the rack, the swing cylinder can rotate, when the, realize keeping the butterfly valve position, be provided with link 4 on the front end outer wall of fixed rack 9, fixed bolster 6 has been cup jointed to the front end outside of link 4, be provided with pivot 5 on the 4 rear end outer walls of link inside the fixed bolster 6, be provided with semicircle gear 10 on the lower extreme outer wall of fixed rack 9, be provided with bottom plate 8 on the 14 upper end outer walls of mount of semicircle gear 10 downside, brace rod 7 is provided with two altogether, two brace rods 7 all set up the right side at swing jar subassembly 15, bottom plate 8 and fixed bolster 6 pass through 7 fixed connection of brace rod, can consolidate the linkage effect between the subassembly through brace rod 7, it is more stable to use.

The working principle and the using process of the invention are as follows: after the hydraulic dynamometer is installed, the working principle of the water inlet and outlet valve control device of the novel hydraulic dynamometer is that an integrated hydraulic servo system is adopted for controlling, oil is supplied from an independent oil source, a hydraulic oil station adopts a scheme of centralized oil supply, a pump station is adopted for supplying oil to a hydraulic oil source part, an energy accumulator group is arranged, a water cooling and filtering system is additionally arranged on the pump source part, the pump source part is provided with a control system, the remote control starting and stopping of an oil pump and the system pressure and temperature alarm lamp functions can be realized, and a comprehensive alarm signal can be sent to an upper computer, when the hydraulic dynamometer is used, pressure oil which comes out of a gear pump of the hydraulic dynamometer is sucked from an oil tank through an oil suction and oil filter after the gear pump is started, the pressure oil enters the energy accumulator through an oil station outlet assembly (a stop valve, a one-way valve, an oil filter and an overflow valve), namely, the energy accumulator is, the oil pressure begins to rise, when the oil pressure rises to the high limit of the system working pressure, the electromagnetic directional valve is electrified, the outlet of the gear pump is communicated with the oil tank, the gear pump enters an idle running state, the system oil supply is completed by the energy accumulator, in the working state only supplying oil by the energy accumulator, the oil pressure of the energy accumulator is gradually consumed, when the oil pressure drops to the low limit of the system working pressure, the electromagnetic directional valve is electrified, the outlet of the gear pump is communicated with the energy accumulator, the oil charging process is carried out again, the oil cylinder 1 is provided with a rod cavity for supplying pressure oil, a rodless cavity for discharging oil, all piston rods retract, the locking cylinder leaves a locking station, the hydraulic control one-way valve is opened, the rotation angle of the swing cylinder is controlled by the servo valve, the swing cylinder can realize clockwise rotation and anticlockwise rotation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.