阅读说明：本技术 一种内置压电俘能组件水压节流阀 (Built-in piezoelectricity energy harvesting subassembly water pressure choke valve ) 是由 史伟杰 赵海霞 张永涛 段俊勇 王帅 于 2019-10-14 设计创作，主要内容包括：本发明公开了一种内置压电俘能组件水压节流阀,其特征在于：包括左阀盖、右阀盖、阀芯、阀芯俘能组件、阀体、阀套俘能组件、阀套和调节手柄等。阀体上有进水口,左阀盖上有出水口,阀体中部有环形台肩,与阀芯形成节流口；阀体和左右阀盖间有圆形止口定位；阀芯内部有阀芯俘能组件,与阀套间采用螺纹连接；阀套内部有多个径向分布的阀套俘能组件,与调节手柄采用螺纹连接；调节手柄和右阀盖间有螺纹连接,端部为外六方结构。本发明结构紧凑,未改变节流阀的负载,在阀芯和阀套上均内置了压电俘能组件,无论节流口关闭与否,均可对压力脉动和压力冲击分别进行回收,一定程度可减小压力脉动和压力冲击,并产生了电能,实现了变废为宝。(The invention discloses a water pressure throttling valve with a built-in piezoelectric energy harvesting component, which is characterized in that: the energy-harvesting valve comprises a left valve cover, a right valve cover, a valve core energy-harvesting component, a valve body, a valve sleeve energy-harvesting component, a valve sleeve, an adjusting handle and the like. The valve body is provided with a water inlet, the left valve cover is provided with a water outlet, the middle part of the valve body is provided with an annular shoulder which forms a throttling port with the valve core; a round spigot is arranged between the valve body and the left and right valve covers for positioning; the valve core energy capturing component is arranged in the valve core and is in threaded connection with the valve sleeve; a plurality of radially distributed valve sleeve energy capturing assemblies are arranged in the valve sleeve and are in threaded connection with the adjusting handle; the adjusting handle is in threaded connection with the right valve cover, and the end part of the adjusting handle is of an outer hexagonal structure. The invention has compact structure, does not change the load of the throttle valve, is internally provided with the piezoelectric energy harvesting component on the valve core and the valve sleeve, can respectively recover pressure pulsation and pressure impact no matter whether the throttle port is closed, can reduce the pressure pulsation and the pressure impact to a certain extent, generates electric energy, and realizes changing waste into valuable.)

1. The utility model provides a built-in piezoelectricity energy harvesting subassembly water pressure choke valve which characterized in that: the valve comprises a left valve cover, an O-shaped ring, a valve core energy harvesting component, a valve body, a valve sleeve energy harvesting component, a valve sleeve, a combined sealing ring, a right valve cover, an adjusting handle and an inner hexagon screw. The valve body is provided with a water inlet of the water pressure throttle valve, the left valve cover is provided with a water outlet, the middle part of the valve body is of a hollow circular ring structure and is provided with an annular shoulder, the valve core and the shoulder form a throttling port, and the hollow circular ring structure of the valve body is in clearance fit with the valve sleeve; the valve body is connected with the left valve cover and the right valve cover by adopting inner hexagon screws, is sealed by an O-shaped ring and is positioned by a round spigot; the valve core is internally provided with a valve core energy capturing component which is fixed with the valve sleeve by threads, and a combined sealing ring is arranged between the valve core and the valve sleeve for sealing; a plurality of radially distributed valve sleeve energy capturing assemblies are arranged in the valve sleeve and are in threaded connection with the adjusting handle, and the valve sleeve energy capturing assemblies and the adjusting handle are sealed by a combined sealing ring; the adjusting handle and the right valve cover are sealed by an O-shaped ring and are connected by threads, and the end part of the adjusting handle is of an outer hexagonal structure.

2. The hydraulic throttle valve of a built-in piezoelectric energy harvesting assembly according to claim 1, wherein: the valve core energy-capturing component comprises a group of valve cores, disc springs, guide sleeves, GREEN rings, piezoelectric ceramic stacks, valve core energy-capturing pressing covers and inner hexagon screws. The disc spring is always in a compressed state, so that the guide sleeve presses and presses the electric ceramic stack and is tightly attached to a spigot of the valve core energy-capturing gland, and the valve core energy-capturing gland is connected to the valve core through an inner hexagon screw; the guide sleeve is provided with a circular groove for accommodating a Gray ring; the axial direction of the piezoelectric ceramic stack can adopt a stacking form of a plurality of pieces of piezoelectric ceramics and is positioned in the middle of the valve core.

3. The hydraulic throttle valve of a built-in piezoelectric energy harvesting assembly according to claim 1, wherein: the valve sleeve energy-capturing assemblies are provided with a plurality of groups and are uniformly distributed along the radial direction of the valve sleeve, and each valve sleeve energy-capturing assembly comprises a valve sleeve energy-capturing gland, a valve sleeve, a disc spring, a guide sleeve, a Glae ring, a piezoelectric ceramic stack and an inner hexagon screw. The valve sleeve energy-capturing gland is connected to the valve sleeve through a socket head cap screw and is provided with a round small hole, so that water at the water inlet can flow into the valve sleeve energy-capturing assembly; the piezoelectric ceramic stack adopts a stacking form of a plurality of pieces of piezoelectric ceramics, and the disc spring is in a compressed state and can tightly press the piezoelectric ceramic stack to be attached to the spigot of the valve sleeve; the guide sleeve is provided with a Glare ring.

4. The built-in piezoelectric energy harvesting assembly water pressure throttling valve of claim 1 or 2, wherein: the valve core is integrally a conical valve core, and the left end part of the valve core is provided with an inner hexagonal hole; the valve core is provided with a plurality of groups of small-angle drainage holes, middle-angle drainage holes and large-angle drainage holes, the three drainage holes are uniformly distributed along the radial direction, wherein the angle range of the small-angle drainage holes is 10-25 degrees, the angle range of the middle-angle drainage holes is 30-45 degrees, and the angle of the large-angle drainage holes ensures that the holes can be communicated with the water inlet when the throttling port is closed; a converging hole is arranged at the middle part of the valve core close to the drainage hole, and water at the throttling port is led to converge at the converging hole; a valve core energy capturing component mounting hole is formed in the right side of the middle of the valve core so as to mount the valve core energy capturing component; the outer circumference of the valve core is provided with a positioning shoulder.

5. The built-in piezoelectric energy harvesting assembly water pressure throttling valve of claim 1 or 3, wherein: the left side and the right side of the valve sleeve are provided with a guide hole and an internal thread, the guide hole is matched with a positioning shoulder or an adjusting handle on the valve core, and the guide hole and the positioning shoulder or the adjusting handle are connected together through the threads; the valve sleeve is provided with valve sleeve diversion holes which can enable the water inlet to be communicated with the throttling port, and the holes are uniformly distributed along the radial direction of the valve sleeve; the middle part of the valve sleeve can be provided with a plurality of uniformly distributed valve sleeve energy harvesting component mounting holes, and the side of each valve sleeve energy harvesting component mounting hole close to the axis of the valve sleeve is provided with a valve sleeve piezoelectric ceramic stack mounting hole; the axis of the valve sleeve is provided with a wire lead hole.

Technical Field

The invention relates to a throttling valve, in particular to a hydraulic throttling valve with a built-in piezoelectric energy harvesting assembly.

Background

The buoyancy regulating hydraulic system is an important subsystem of the underwater vehicle, and can realize the exchange and transfer of water and the adjustable ballast tank through a hydraulic pump and a hydraulic valve, thereby regulating the weight of the underwater vehicle and realizing the floating and submerging of the underwater vehicle. The hydraulic pumps with various structural forms can generate flow pulsation in the working process, the flow pulsation can generate pressure pulsation when flowing through a valve port of a hydraulic valve (such as a throttle valve), and the pressure pulsation can excite pipeline vibration and fluid noise. In the working process of the buoyancy regulating hydraulic system, the frequency of fundamental frequency pressure pulsation and harmonic frequency pressure pulsation generated by the hydraulic pump is low, generally dozens to hundreds of hertz, but when the underwater vehicle works at a large submerged depth, cavitation is easily generated at the valve port of the throttle valve, and further high-frequency pulsating pressure of kilohertz is excited, so that the pressure pulsation in the buoyancy regulating hydraulic system has a broadband characteristic.

The underwater vehicle comprises low-power consumption elements such as a pressure sensor, a communication module, a displacement sensor, a water leakage monitoring sensor and the like which need to be powered by a power supply. If the pressure pulsation output by the buoyancy regulating hydraulic system of the underwater vehicle can be captured and the electric energy can be stored to drive the low-electric-power consumption element, the method has important practical significance on the energy conservation of the underwater vehicle

In recent years, with the development of new energy and the improvement of energy-saving requirements, flow-induced vibration gradually becomes an important energy source, and the flow-induced vibration piezoelectric energy harvesting technology is also widely researched. The piezoelectric energy harvesting technology is a hot spot of the research on the energy collection technology at home and abroad at present, the technology utilizes the voltage change caused by the deformation of the piezoelectric material in the flow resisting process to extract energy, and has the advantages of simple structure, no electromagnetic interference, no pollution, no heat generation, easy miniaturization and integration and the like. .

Disclosure of Invention

The invention provides a hydraulic throttling valve with a built-in piezoelectric energy harvesting component aiming at broadband pressure pulsation in a buoyancy regulating hydraulic system.

A hydraulic throttling valve with a built-in piezoelectric energy harvesting component comprises a left valve cover, an O-shaped ring, a valve core energy harvesting component, a valve body, a valve sleeve energy harvesting component, a valve sleeve, a combined sealing ring, a right valve cover, an adjusting handle and an inner hexagon screw. The valve body is provided with a water inlet of the water pressure throttle valve, the left valve cover is provided with a water outlet, the middle part of the valve body is of a hollow circular ring structure and is provided with an annular shoulder, the valve core and the shoulder form a throttling port, and the hollow circular ring structure of the valve body is in clearance fit with the valve sleeve; the valve body is connected with the left valve cover and the right valve cover by adopting inner hexagon screws, is sealed by an O-shaped ring and is positioned by a round spigot; the valve core is internally provided with a valve core energy capturing component, the valve core and the valve sleeve are fixed by threads, and a combined sealing ring is arranged between the valve core and the valve sleeve for sealing, so that water in a hollow circular ring in the middle of the valve body is prevented from entering the valve core energy capturing component; a plurality of radially distributed valve sleeve energy capturing assemblies are arranged in the valve sleeve and are in threaded connection with the adjusting handle, and the valve sleeve energy capturing assemblies and the adjusting handle are sealed by a combined sealing ring; the adjusting handle and the right valve cover are sealed by an O-shaped ring and are connected by threads, and the end part of the adjusting handle is of an outer hexagonal structure.

Furthermore, the valve core energy capturing assembly comprises a group of valve cores, disc springs, guide sleeves, GREEN rings, piezoelectric ceramic stacks, valve core energy capturing pressing covers and inner hexagon screws. The disc spring is always in a compressed state, so that the guide sleeve presses and presses the electric ceramic stack and is tightly attached to a spigot of the valve core energy-capturing gland, and the valve core energy-capturing gland is connected to the valve core through an inner hexagon screw; the guide sleeve is provided with a circular groove for accommodating a Gray ring; the axial direction of the piezoelectric ceramic stack can adopt a stacking form of a plurality of pieces of piezoelectric ceramics and is positioned in the middle of the valve core.

Furthermore, the valve sleeve energy-capturing assemblies are provided with a plurality of groups, are uniformly distributed along the radial direction of the valve sleeve, and comprise a valve sleeve energy-capturing gland, a valve sleeve, a disc spring, a guide sleeve, a Glae ring, a piezoelectric ceramic stack and an inner hexagon screw. The valve sleeve energy-capturing gland is connected to the valve sleeve through a socket head cap screw and is provided with a round small hole, so that water at the water inlet can flow into the valve sleeve energy-capturing assembly; the piezoelectric ceramic stack adopts a stacking form of a plurality of pieces of piezoelectric ceramics, and the disc spring is in a compressed state and can tightly press the piezoelectric ceramic stack to be attached to the spigot of the valve sleeve; the guide sleeve is provided with a Glare ring.

Furthermore, the valve core is integrally a conical valve core, and the left end part of the valve core is provided with an inner hexagonal hole; the valve core is provided with a plurality of groups of small-angle drainage holes, middle-angle drainage holes and large-angle drainage holes, the three drainage holes are uniformly distributed along the radial direction, wherein the angle range of the small-angle drainage holes is 10-25 degrees, the angle range of the middle-angle drainage holes is 30-45 degrees, and the angle of the large-angle drainage holes ensures that the valve core energy harvesting assembly can be communicated with the water inlet when the throttling port is closed; a converging hole is arranged at the middle part of the valve core close to the drainage hole, and water at the throttling port is led to converge at the converging hole; a valve core energy capturing component mounting hole is formed in the right side of the middle of the valve core so as to mount the valve core energy capturing component; the outer circumference of the valve core is provided with a positioning shoulder, so that the coaxiality requirement of the valve core and the valve sleeve can be ensured in the process of installation through the external thread.

Furthermore, the left side and the right side of the valve sleeve are provided with a guide hole and an internal thread, the guide hole is matched with a positioning shoulder or an adjusting handle on the valve core, and the guide hole and the positioning shoulder or the adjusting handle are connected together through the threads; the valve sleeve is provided with valve sleeve diversion holes which can enable the water inlet to be communicated with the throttling port, and the holes are uniformly distributed along the radial direction of the valve sleeve; the middle part of the valve sleeve can be provided with a plurality of uniformly distributed valve sleeve energy harvesting component mounting holes, and the side of each valve sleeve energy harvesting component mounting hole close to the axis of the valve sleeve is provided with a valve sleeve piezoelectric ceramic stack mounting hole; the axis of the valve sleeve is provided with a wire lead hole.

Compared with the prior art, the invention has the beneficial effects that:

(1) the piezoelectric energy harvesting components are arranged on the valve core and the valve sleeve respectively, pressure pulsation and pressure impact in a pipeline system are recovered respectively, the pressure pulsation and the pressure impact can be reduced to a certain degree, electric energy is generated for storage, and waste is changed into valuable.

(2) After the throttling port of the throttling valve is closed, the valve core energy capturing component and the valve sleeve energy capturing component can recover pressure pulsation in the system, and the energy recovery function is not influenced.

(3) The invention adopts a method of internally arranging the piezoelectric energy harvesting assembly, has compact structure, only pulsated water enters and exits after the water enters the assembly, and does not change the load resistance of the throttle valve.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a cartridge energy capture assembly;

FIG. 3 is a schematic view of the valve cartridge;

FIG. 4 is a schematic structural view of a valve sleeve energy capturing assembly;

fig. 5 is a schematic structural view of the valve sleeve;

FIG. 6 is a schematic view of the distribution of water in the throttle valve with the throttle closed.

The above figures are labeled as: 1. a left valve cover; 2. an O-shaped ring; 3. a valve core; 4. a valve core energy capturing assembly; 5. a valve body; 6. a valve housing energy capturing assembly; 7. a valve housing; 8. a combined sealing ring; 9. a right valve cover; 10. an adjusting handle; 11. a socket head cap screw; 301. an inner hexagonal hole; 302. small-angle drainage holes; 303. a medium-angle drainage hole; 304. a large-angle drainage hole; 305. an exhaust port; 306. a valve core energy capturing component mounting hole; 307. an external thread; 308. positioning the shoulder; 401. a disc spring; 402. a guide sleeve; 403. a Glare circle; 404. a piezoelectric ceramic stack; 405. the valve core can capture energy and press the cover; 601. the valve sleeve captures the energy gland; 701. a guide hole; 702. an internal thread; 703. valve sleeve diversion holes; 704. a valve sleeve energy capturing component mounting hole; 705. valve pocket piezoelectric ceramic pile mounting hole; 706. a wire lead hole; A. a water outlet; B. a water inlet; C. an orifice.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

Fig. 1 shows an embodiment of the present invention, which includes a left valve cover 1, an O-ring 2, a valve core 3, a valve core energy capturing assembly 4, a valve body 5, a valve sleeve energy capturing assembly 6, a valve sleeve 7, a combined seal ring 8, a right valve cover 9, an adjusting handle 10, and an inner hexagon screw 11. The valve body 5 is provided with a water inlet B of the throttle valve, the left valve cover 1 is provided with a water outlet A, the middle part of the valve body 5 is of a hollow circular ring structure and is provided with an annular shoulder, the valve core 3 and the shoulder form a throttle opening C, and the hollow circular ring structure of the valve body 5 is in clearance fit with the valve sleeve 7; the valve body 5 is connected with the left valve cover 1 and the right valve cover 9 by adopting inner hexagon screws, sealed by the O-shaped ring 2 and positioned by a round spigot; the valve core 3 is internally provided with a valve core energy capturing component 4 and is fixed with the valve sleeve 7 by threads, and a combined sealing ring 8 is arranged between the valve core 3 and the valve sleeve for sealing so as to prevent water in a hollow circular ring in the middle of the valve body 5 from entering the valve core energy capturing component 4; a plurality of radially distributed valve sleeve energy capturing assemblies 6 are arranged in the valve sleeve 7 and are in threaded connection with the adjusting handle 10, and the valve sleeve energy capturing assemblies and the adjusting handle are sealed by a combined sealing ring 8; the adjusting handle 10 and the right valve cover 9 are sealed by the O-shaped ring 2 and are connected by threads, and the end parts of the adjusting handle and the right valve cover are of an outer hexagonal structure so as to adjust the valve core left and right and change the size of the throttling opening C.

The valve core energy capturing component 4 is provided with one group, the structural schematic diagram of which is shown in fig. 2, and comprises a valve core 3, a disc spring 401, a guide sleeve 402, a GREEN 403, a piezoelectric ceramic stack 404, a valve core energy capturing gland 405 and an inner hexagon screw 11. The disc spring 401 is always in a compressed state, so that the guide sleeve 402 compresses the piezoelectric ceramic stack 404 and is tightly attached to a spigot of the valve core energy-trapping gland 405, and the valve core energy-trapping gland 405 is connected to the valve core 3 through a socket head cap screw 11; the guide sleeve 402 is provided with a circular groove for arranging a Gray ring 403 to play a role in reducing friction force and sealing; the axial direction of piezo stack 404 may be in the form of a stack of several piezo ceramic pieces, located in the middle of the valve core.

The structural schematic diagram of the valve core 3 is shown in fig. 3, the valve core 3 is a conical valve core as a whole, and the left end part is provided with a hexagon socket 301, so that the external thread 307 of the valve core 3 is pre-tightened to a specified torque by a wrench; the valve core 3 is provided with a plurality of groups of small-angle drainage holes 302, middle-angle drainage holes 303 and large-angle drainage holes 304, the three drainage holes are uniformly distributed along the radial direction, wherein the angle range of the small-angle drainage holes 302 is 10-25 degrees, the angle range of the middle-angle drainage holes 303 is 30-45 degrees, the valve core 3 is ensured to be in a working state all the time in the left-right adjusting process, and the large-angle drainage holes 304 can be communicated with the water inlet B when the throttle C is ensured to be closed, so that the valve core energy capturing assembly 4 is in the working state; a confluence hole 305 is formed in the middle of the valve core 3 close to the drainage hole, and water at the throttling port C is led to be converged; a valve core energy capturing component mounting hole 306 is formed in the right side of the middle of the valve core 3 so as to mount the valve core energy capturing component 4; the outer circumference of the valve core 3 has a positioning shoulder 308, so that the coaxiality requirement of the valve core 3 and the valve sleeve 7 can be ensured in the process of installation through the external thread 307.

The valve sleeve energy capturing assemblies 6 are provided with a plurality of groups and are uniformly distributed along the radial direction of the valve sleeve, and the structural schematic diagram of the valve sleeve energy capturing assemblies is shown in fig. 4 and comprises a valve sleeve energy capturing gland 601, a valve sleeve 7, a disc spring 401, a guide sleeve 402, a Glare ring 403, a piezoelectric ceramic stack 404 and an inner hexagon screw 11. The valve sleeve energy capturing gland 601 is connected to the valve sleeve 7 through an inner hexagon screw 11 and is provided with a round small hole, so that water at the water inlet B can flow into the valve sleeve energy capturing component 6; the piezoelectric ceramic stack 404 is formed by stacking a plurality of pieces of piezoelectric ceramics, and the disc spring 401 is in a compressed state and can tightly press the piezoelectric ceramic stack 404 to be attached to a spigot of the valve sleeve 7; the guide sleeve 402 is provided with a gray ring 403.

Fig. 5 is a schematic structural view of the valve housing 7. The left side and the right side of the valve sleeve 7 are provided with a guide hole 701 and an internal thread 702, the guide hole 701 is matched with a positioning shoulder 308 on the valve core 3 or the adjusting handle 10, so that the valve core 3 and the valve sleeve 7 or the adjusting handle 10 keep coaxial and are connected together through the threads; the valve sleeve 7 is provided with valve sleeve diversion holes 703 which can communicate the water inlet B with the throttling port C, and the holes are uniformly distributed along the radial direction of the valve sleeve; the middle part of the valve sleeve 7 can be provided with a plurality of valve sleeve energy capturing component mounting holes 704 which are uniformly distributed and used for mounting the valve sleeve energy capturing component 6, and the side, close to the axis of the valve sleeve 7, of the valve sleeve energy capturing component mounting hole 704 is provided with a valve sleeve piezoelectric ceramic stack mounting hole 705 for mounting a piezoelectric ceramic stack 404; the valve housing 7 has a wire lead hole 706 on its axis for leading out a current lead.

When the throttle valve works, water flows in from the water inlet B, then fills a cavity between the middle part of the valve body 3 and the valve sleeve 7 and the adjusting handle 10, flows to the throttle port C through the valve sleeve diversion hole 703 on the valve sleeve 7 and finally flows to the water outlet A; during application, the adjustment handle 10 may be rotated to vary the opening of the restriction C, thereby adjusting the flow through the restriction valve. During the flow of water through the throttle, two parts can generate electrical energy: a valve core energy capturing component 4 and a valve sleeve energy capturing component 6. One part of water flows into the valve sleeve energy capturing component 6 through a small hole at the center of a circle on the valve sleeve energy capturing gland 601, and the flow rate of the water generated by the hydraulic pump is pulsatile, so the guide sleeve 402 in the valve sleeve energy capturing component 6 can reciprocate to deform the piezoelectric ceramic stack 404, thereby generating electric energy; the other part of the water is accelerated in flow speed through the throttling port C to generate pulsating pressure impact, and the pulsating pressure of the part of the water is induced into the valve core energy capturing component 4 through the drainage holes 302, 303 and 304 on the valve core 3 to generate electric energy. The electric energy generated by the two parts can be led out of the throttle valve through the wire lead hole 706 and can be stored through circuits such as external shaping and collection.

When the throttle C of the throttle valve is closed, the water inlet B is not communicated with the water outlet A, but at the moment, the two groups of energy harvesting devices can still perform piezoelectric energy recovery. One part of water in the water inlet B can enter the valve sleeve energy capturing component 6 through a small circular hole in the valve sleeve energy capturing gland 601, the other part of the water enters a cavity on the right side of the throttling port C through a valve sleeve diversion hole 703 in the valve sleeve 7 and then flows into the valve core energy capturing component 3 through a large-angle diversion hole 304 in the valve core 3, and the two parts of water have pressure pulsation, so that the piezoelectric ceramic stack 404 still deforms even if the throttling port C is closed, and piezoelectric energy recovery can be carried out.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.