CN106301073B - A kind of double acting diaphragm type piezoelectric generator using annular space jet excitation - Google Patents

Abstract

The invention discloses a kind of double acting diaphragm type piezoelectric generator using annular space jet excitation, with solve to be used in current industrial environment to capture gas pressure can micro- energy generator existing for the technical problem such as generating efficiency is low.The present invention includes micropore gas flow rate increment device, double diaphragm type electrification components and holding screw.Micropore gas flow rate increment device is threadedly coupled by holding screw with double diaphragm type electrification components.The micropore gas flow rate increment device can induce outside air to be oriented movement in the presence of high-pressure low-flow gas, and speedup and flow increasing are carried out to the gas after induction, discharge from taper jet end and act on the double diaphragm type electrification components being connected with micropore gas flow rate increment device and generated electricity.The double acting diaphragm type piezoelectric generator that the present invention designs can amplify gas flow, and then the generating efficiency of generator is improved into more than 3 times.There is wealthy application prospect in low power dissipation electron equipment energy supply technical field.

Description

A Double-acting Diaphragm Piezoelectric Generator Excited by Annulus Jet

technical field

The invention relates to a double-acting diaphragm piezoelectric generator excited by an annular gap jet, and belongs to the technical field of energy supply for low-power electronic equipment.

Background technique

As advanced manufacturing equipment technology continues to move towards intelligence, light weight, miniaturization and integration, and with its deep integration with low-power electronic equipment energy supply technology, a large number of IoT nodes, low power consumption Low-power electronic devices such as sensors and low-power devices are widely used in the field of advanced manufacturing equipment technology. At the same time, this also puts forward higher requirements on the energy supply technology level of low-power electronic equipment. Therefore, providing stable and reliable continuous energy supply to low-power electronic devices such as low-power devices and IoT nodes is a prerequisite for ensuring their normal operation. The current energy supply methods for IoT nodes and low-power devices in the field of advanced manufacturing equipment technology mainly include direct power supply and chemical battery energy supply. Among them, the direct power supply method has problems such as serious electromagnetic interference and complex system wiring, while the chemical battery power supply method has shortcomings such as limited battery life, regular replacement, and environmental pollution. It can be seen that it is particularly important to study a new energy capture and conversion technology to solve many disadvantages brought about by traditional energy supply technologies.

Self-energy technology based on piezoelectric elements has become one of the hot research issues in the current environmental micro-energy capture and conversion technology due to its simple structure, no heat generation, no electromagnetic interference, and long life. It can convert the clean and renewable micro-energy (such as gas pressure energy) that exists in large quantities in the industrial environment into the required electric energy and provide continuous and reliable power supply for low-power electronic devices. This technology research can effectively solve the problems caused by traditional power supply. Problems such as complicated wiring and chemical battery power supply need to be replaced regularly and pollute the environment. However, most of the generators in the current industrial environment cannot directly convert gas pressure energy into electrical energy, or the low energy conversion efficiency restricts the use of such generators in low-power devices such as IoT nodes, low-power sensors, and low-power devices. Applications in the field of energy supply technology for consumer electronics.

Contents of the invention

In order to solve the technical problems of low energy capture efficiency in micro-energy generators used to capture gas pressure energy in the current industrial environment, the present invention discloses a double-acting diaphragm piezoelectric generator that uses annulus jet excitation. Consumer electronics provide a highly efficient micro energy supply.

The technical scheme adopted in the present invention is:

The double-acting diaphragm piezoelectric generator excited by the annular jet includes a micropore gas flow booster, a set screw and a double-diaphragm power generation assembly. Diaphragm power generation components are threaded; the micropore gas flow booster includes a conical suction end, a suction end screw, a fixing sleeve, a conical jet end, a jet end screw, a jet end sealing ring and a suction end seal ring; the tapered suction end and the fixed sleeve are gas-sealed through the suction end sealing ring, and the tapered suction end and the fixed sleeve are threaded through the suction end screw; the tapered air injection end and the fixed sleeve pass through The sealing ring of the jet end is gas-tight, and the conical jet end and the fixed sleeve are threaded through the jet end screw; the double-diaphragm power generation component includes a power generation component fixing frame, a fan-shaped power generation component, a spoiler diaphragm and a rectangular power generation component; The fixed frame of the power generation component is fastened to the fan-shaped power generation component, the fixed frame of the power generation component is fastened to the rectangular power generation component, and the rectangular power generation component is fastened to the spoiler diaphragm.

The tapered suction end is provided with a drainage hole, a suction end through hole, a suction end sealing ring groove and a tapered suction end threaded hole; the tapered suction end threaded hole is threadedly connected with the suction end screw.

The fixed sleeve is provided with a sleeve threaded hole I, and the sleeve threaded hole I is threadedly connected with the suction end screw; the fixed sleeve is provided with an air inlet; the fixed sleeve is provided with a sleeve threaded hole II, and the sleeve threaded hole Ⅱ is threadedly connected with the jet end screw.

The conical jet end is provided with a jet end communication hole, a conical jet port, a jet end threaded hole, a flow increasing device threaded hole and a jet end sealing ring groove; the jet end screw is threadedly connected with the jet end threaded hole, increasing The threaded hole of the flow device is threadedly connected with the set screw, and the sealing ring at the jet end is fixed with the groove of the sealing ring at the jet end.

The power generation component fixing frame is provided with a generator inlet, a generator gas outlet, a rotating slot I, a mounting screw hole, and a rotating slot II; The threaded hole is threadedly connected with the set screw.

The fan-shaped power generation assembly is provided with a fan-shaped metal substrate and a piezoelectric element I, and the fan-shaped metal substrate and the piezoelectric element I are fixed; the spoiler diaphragm is provided with a counterbore of the power generation assembly, and the counterbore of the power generation assembly is fixed with the rectangular power generation assembly; The flow diaphragm is provided with an inner arc surface and an outer arc surface; the rectangular power generating assembly is provided with a rectangular metal substrate and a piezoelectric element II, and the rectangular metal substrate and the piezoelectric element II are fixed.

The radius of the drainage hole is R ₀ , the radius of the through hole at the suction end is R ₁ , the radius ratio between the drainage hole and the through hole at the suction end is E=R ₀ /R ₁ , and the E value satisfies a range of 1 to 1.5; The radius of the connecting hole at the jet end is R ₃ , the radius ratio between the communicating hole at the jet end and the through hole at the suction end is F=R ₃ /R ₁ , and the F value satisfies the range of 1.2~1.5; the connecting hole at the jet end and the air inlet The radius ratio is D=R ₃ /R ₂ , and the D value satisfies the range of 5~8.

The radius of the fan-shaped metal substrate is R ₄ , and the value range of R ₄ is 35-45 mm; the length of the piezoelectric element I is a, and the ratio of the length of the piezoelectric element I to the radius of the fan-shaped metal substrate is M=a/ The value range of R ₄ and M is 0.3-0.7; the fillet radius of the inner arc surface is R ₅ , and the value range of R ₅ is 5-10 mm.

The piezoelectric element I in the fan-shaped power generation assembly and the piezoelectric element II in the rectangular power generation assembly can use piezoelectric ceramic sheet PZT or flexible, strong and tough piezoelectric material PVDF.

The working principle of the piezoelectric generator designed in the present invention is to use the positive piezoelectric effect of the piezoelectric element to realize the transformation of gas pressure energy into electric energy. The outside air speeds up, and after the gas speeds up, it flows out from the conical jet end and acts on the flexible diamond-shaped power generation device to realize electrical energy conversion. The micropore flow amplifying device has a circle of annular micropores. Due to the extremely small diameter of the pores, the airflow ejected under the action of high-pressure gas is relatively fast. When the fast gas flow causes the internal pressure of the piezoelectric generator to be lower than the external air pressure, the external air will be evenly sucked into the micropore flow amplification device to achieve the purpose of increasing the flow. The technical advantage of the double-diaphragm power generation component is that it adopts a disk-shaped array structure, which can arrange as many piezoelectric elements as possible in a small space. By impacting the fan-shaped power generation component, the piezoelectric elements are deformed to capture more efficiently pressure energy in a gas.

The beneficial effects of the present invention are: without affecting the working conditions of industrial production, the invented microporous gas flow enhancer can induce the directional movement of the external air under the action of high-pressure and small-flow gas, and increase the induced gas. Speed and flow increase, discharged from the conical gas injection end to act on the double-diaphragm power generation component connected to the micropore gas flow booster for energy conversion. The generator designed in the invention amplifies the gas flow velocity and flow rate, thereby increasing the power generation efficiency of the generator by more than three times. It has broad application prospects in technical fields such as low-power sensors and low-power device energy supply.

Description of drawings

Fig. 1 shows the structural representation of a kind of double-acting diaphragm type piezoelectric generator that utilizes annulus jet excitation that the present invention proposes;

Fig. 2 is a schematic structural diagram of a micropore gas flow booster of a double-acting diaphragm piezoelectric generator proposed by the present invention;

Fig. 3 is a sectional view of the conical suction end structure of a double-acting diaphragm piezoelectric generator proposed by the present invention that utilizes annular gap jet excitation;

Fig. 4 shows a cross-sectional view of the fixed sleeve structure of a double-acting diaphragm piezoelectric generator proposed by the present invention that utilizes annular gap jet excitation;

Fig. 5 shows the sectional view of the conical jet end structure of a double-acting diaphragm piezoelectric generator proposed by the present invention;

Figure 6 is a partial cross-sectional view of the conical jet end structure of a double-acting diaphragm piezoelectric generator proposed by the present invention;

Fig. 7 is a cross-sectional view of the local serial connection structure of the conical suction end and the conical jetting end of a double-acting diaphragm piezoelectric generator proposed by the present invention;

Fig. 8 is a cross-sectional view of the structure of a double-diaphragm power generation assembly of a double-acting diaphragm piezoelectric generator proposed by the present invention;

Fig. 9 is a cross-sectional view of the fixed frame structure of the power generation component of a double-acting diaphragm piezoelectric generator proposed by the present invention excited by the annular gap jet;

Fig. 10 is a schematic structural diagram of a fan-shaped power generation assembly of a double-acting diaphragm piezoelectric generator proposed by the present invention that utilizes annulus jet excitation;

Fig. 11 is a cross-sectional view of the spoiler diaphragm of a rectangular power generation component of a double-acting diaphragm piezoelectric generator proposed by the present invention;

Fig. 12 is a cross-sectional view of the structure of a rectangular power generation assembly of a double-acting diaphragm piezoelectric generator proposed by the present invention;

FIG. 13 is a schematic diagram of a rectifier circuit of a double-acting diaphragm piezoelectric generator proposed by the present invention that utilizes annulus jet excitation.

Detailed ways

Specific implementation manner 1: This implementation manner will be described with reference to FIG. 1 to FIG. 13 . This embodiment provides a specific implementation of a double-acting diaphragm piezoelectric generator excited by an annular jet. The double-acting diaphragm piezoelectric generator excited by annulus jet includes a micropore gas flow booster 1 , a set screw 2 and a double-diaphragm power generation assembly 3 . Wherein, the microporous gas flow booster 1 is threadedly connected with a double-diaphragm power generation assembly 3 through a set screw 2 .

The micropore gas flow booster 1 includes a conical suction end 1-1, a suction end screw 1-2, a fixing sleeve 1-3, a conical air injection end 1-4, an air injection end screw 1-5, Jet end sealing ring 1-6 and suction end sealing ring 1-7. The conical suction end 1-1 and the fixed sleeve 1-3 are gas-sealed through the suction end sealing ring 1-7; the conical suction end 1-1 and the fixed sleeve 1-3 are sealed through the suction end Screw 1-2 threaded connection. The conical jet end 1-4 and the fixed sleeve 1-3 are gas-sealed through the jet end sealing ring 1-6; the conical jet end 1-4 and the fixed sleeve 1-3 are passed through the jet end screw 1-6 5 screw connections. The conical suction end 1-1 is provided with a drainage hole 1-1-1, which induces outside air to enter the conical suction end 1-1 from the drainage hole 1-1-1; the conical suction end 1-1 1 is provided with a suction end through hole 1-1-2, and the induced gas is discharged from the conical suction end 1-1 through the suction end through hole 1-1-2; the conical suction end 1-1 is provided with a suction The gas end sealing ring groove 1-1-3, the suction end sealing ring groove 1-1-3 is used to install the suction end sealing ring 1-7; the tapered suction end 1-1 is provided with a tapered Suction end threaded hole 1-1-4, the tapered suction end threaded hole 1-1-4 is threadedly connected with suction end screw 1-2. The fixed sleeve 1-3 is provided with a sleeve threaded hole I1-3-1, and the sleeve threaded hole I1-3-1 is threadedly connected with the suction end screw 1-2; the fixed sleeve 1-3 An air inlet 1-3-2 is provided, and the compressed gas enters the fixed sleeve 1-3 through the air inlet 1-3-2; the fixed sleeve 1-3 is provided with a sleeve threaded hole II 1-3-3, The sleeve threaded hole II 1-3-3 is threadedly connected with the air jet end screw 1-5. The conical jet end 1-4 is provided with a jet end communication hole 1-4-1, and the mixed gas enters the conical jet end 1-4 from the jet end communication hole 1-4-1; the conical jet end 1- 4 There is a conical gas injection port 1-4-2, and the mixed gas is sprayed out of the micropore gas flow enhancer 1 through the conical gas injection port 1-4-2; the conical gas injection end 1-4 is provided with a threaded hole at the gas injection end 1-4-3, the jet end screw 1-5 is threadedly connected with the jet end threaded hole 1-4-3; the tapered jet end 1-4 is provided with a flow increasing device threaded hole 1-4-4; The threaded hole 1-4-4 of the flow device is threadedly connected with the set screw 2; the tapered jet end 1-4 is provided with a jet end sealing ring groove 1-4-5, and the jet end sealing ring groove 1-4- 5 is used to install the jet end sealing ring 1-6.

The double-diaphragm power generation assembly 3 includes a power generation assembly fixing frame 3-1, a fan-shaped power generation assembly 3-2, a spoiler diaphragm 3-3 and a rectangular power generation assembly 3-4. The power generation assembly fixing frame 3-1 is tightly connected with the fan-shaped power generation assembly 3-2; the power generation assembly fixing frame 3-1 is tightly connected with the rectangular power generation assembly 3-4; The flow diaphragm 3-3 is tightly connected. The power generation component fixing frame 3-1 is provided with a generator inlet 3-1-1, and the mixed gas enters through the generator inlet 3-1-1; the power generation component fixing frame 3-1 is provided with a generator The gas outlet 3-1-2, the mixed gas is discharged from the double-diaphragm power generation component 3 through the gas outlet 3-1-2 of the generator; The component 3-4 is fixed to the power generation component fixing frame 3-1 through the rotation slot I3-1-3; the power generation component fixing bracket 3-1 is provided with a rotation slot II 3-1-5, and the fan-shaped power generation component 3-2 passes through the rotation slot II 3-1-5 is fixed with the power generation component fixing frame 3-1; the power generation component fixing frame 3-1 is provided with an installation threaded hole 3-1-4, and the installation threaded hole 3-1-4 is connected with the set screw 2 threaded connection. The fan-shaped power generation assembly 3-2 is provided with a fan-shaped metal substrate 3-2-1, the fan-shaped power generation assembly 3-2 is provided with a piezoelectric element I3-2-2, the fan-shaped metal substrate 3-2-1 and the piezoelectric element Ⅰ3-2-2 is bonded by epoxy resin AB glue, which can realize the transformation of gas pressure energy into electric energy, and manage the energy through a full bridge rectifier circuit; in this specific implementation, the piezoelectric element Ⅰ3-2-2 can be used The piezoelectric ceramic sheet PZT produced by Harbin Core Tomorrow Co., Ltd. and Baoding Hongsheng Acoustics Manufacturer; the piezoelectric element 3-2-2 in this specific implementation mode can also use the flexible, strong and tough piezoelectric element of Precision Electronics (Shenzhen) Co., Ltd. Material PVDF. The turbulence diaphragm 3-3 is provided with a power generation component counterbore 3-3-1, and the turbulence diaphragm 3-3 is fixedly connected with the rectangular power generation component 3-4 through the power generation component counterbore 3-3-1; The spoiler diaphragm 3-3 is provided with an inner arc surface 3-3-2, and the spoiler diaphragm 3-3 is provided with an outer arc surface 3-3-3, which is used to block the mixed gas and promote the rectangular power generation component 3- 4 deformed. The rectangular power generation component 3-4 is provided with a rectangular metal substrate 3-4-1, and the rectangular power generation component 3-4 is provided with a piezoelectric element II 3-4-2, and the rectangular metal substrate 3-4-1 is in contact with the piezoelectric element II 3-4-1. Electric component II 3-4-2 is bonded by epoxy resin AB glue.

The conical suction end 1-1 in the micropore gas flow enhancer 1 is provided with a drainage hole 1-1-1, the radius of the drainage hole 1-1-1 is R ₀ , and the conical suction end The end 1-1 is provided with a suction end through hole 1-1-2, the radius of the suction end through hole 1-1-2 is R ₁ , the drainage hole 1-1-1 and the suction end through hole 1- The radius ratio of 1-2 is E=R ₀ /R ₁ , and the E value satisfies the range of 1~1.5. By adjusting the E value, the flow rate of the external gas entering the suction end through hole 1-1-2 can be changed; this specific implementation The value of E in the mode is 1.2. The fixed sleeve 1-3 is provided with an air inlet 1-3-2, the radius of the air inlet 1-3-2 is R ₂ , the radius of the air inlet 1-3-2, the drainage hole 1-1 The relationship between the -1 radius and the 1-1-2 radius of the through hole at the suction end is R ₀ =R ₁ +k R ₂ , the value of k satisfies the range of 0~0.3, and the flow into the suction end can be changed by adjusting the value of k The flow rate and flow rate of the mixed gas in the through hole 1-1-2; the value of k is 0 in this specific embodiment. The conical jet end 1-4 is provided with a jet end communication hole 1-4-1, the radius of the jet end communication hole 1-4-1 is R ₃ , the jet end communication hole 1-4-1 is connected to the suction The radius ratio of the end through hole 1-1-2 is F=R ₃ /R ₁ , and the F value satisfies the range of 1.2~1.5. By adjusting the F value, the flow rate of the mixed gas into the jet end communication hole 1-4-1 can be changed. Flow rate; The value of F is 1.2 in this specific embodiment. The ratio of the radius of the communicating hole 1-4-1 at the jet end to the air inlet hole 1-3-2 is D=R ₃ /R ₂ , and the D value satisfies a specific range of 5 to 8, and the mixing can be adjusted by changing the D value The flow and velocity of the gas entering the communication hole 1-4-1 at the jet end; the value of D in this specific embodiment is 6. The conical included angle of the conical jet port 1-4-2 along the axial direction is θ, and the value of θ satisfies the range of 0° to 30°. By adjusting the value of θ, the conical jet end 1-4 can be adjusted to spray The flow velocity of the mixed gas; the value of θ in this specific embodiment is 20°. The length of the overlapping portion between the conical suction end 1-1 and the conical air injection end 1-4 is w, and the value of w satisfies the range of 10-20 mm, and the mixed gas can be changed by adjusting the value of w. Fluid state; the value of w in this specific embodiment is 15 mm.

The fan-shaped power generation components 3-2 in the double-diaphragm power generation component 3 are arranged in a circumferential circular array, and the 4n fan-shaped power generation components 3-2 together form a circle, and the value of n is an integer greater than or equal to 1, The value of n in this specific embodiment is 1. The fan-shaped power generation assembly 3-2 is provided with a fan-shaped metal substrate 3-2-1, the fan-shaped power generation assembly 3-2 is provided with a piezoelectric element I3-2-2, and the radius of the fan-shaped metal substrate 3-2-1 is R ₄ , the value of R ₄ satisfies the range of 35~45 mm, and the rigidity of the fan-shaped metal substrate 3-2-1 can be changed by adjusting the value of the radius R ₄ of the fan-shaped metal substrate 3-2-1; in this specific embodiment The value of R ₄ is 45 mm. The piezoelectric element I3-2-2 has a length a, and the ratio of the length a of the piezoelectric element _I3-2-2 to the radius R4 of the fan _- shaped metal substrate 3-2-1 is M=a/R4, M The range of the value is 0.3~0.7, and the power generation effect of the fan-shaped power generation component 3-2 can be changed by adjusting the value of M; the value of M in this specific embodiment is 0.3; the piezoelectric element I3-2-2 has a width The value b, the ratio of the value of b to the value of a is N=b/a, and the value of N satisfies the range of 0.2~0.4, and the value of N in this specific embodiment is 0.2. The piezoelectric element II3-4-2 has a length c, a width d, the ratio of c to d is P=c/d, and the P value satisfies a range of 3 to 5. By adjusting the P value, the piezoelectric element can be changed II 3-4-2 stiffness; the value of P is 4 in this specific embodiment. The spoiler diaphragm 3-3 is provided with an inner arc surface 3-3-2 and an outer arc surface 3-3-3, and the inner arc surface 3-3-2 has a fillet radius value R ₅ , and R ₅ takes The value satisfies the range of 5-10 mm, and the value of R ₅ in this specific embodiment is 6 mm; the outer arc surface 3-3-3 has a fillet radius value R ₆ , and the ratio of R ₆ to R ₅ is Q=R ₆ /R ₅ , the value of Q satisfies the range of 1~2.5; the value of Q in this embodiment is 1.5. The length L of the rectangular metal substrate 3-4-1, the length L of the rectangular metal substrate 3-4-1, the length c and the width d of the piezoelectric element II 3-4-2 satisfy the relationship L=c+ The value range of λd and λ is 0.5~1.5, and the power generation effect of the rectangular power generation component 3-4 can be changed by adjusting the value of λ; the value of λ is 1 in this embodiment.

The full bridge rectification circuit includes diodes (D ₆ -D ₉ ) and capacitor C ₁ . When the flow-increasing gas flows out from the conical jet end 1-4, the double-diaphragm power generation component 3 will be excited, and under the action of the positive piezoelectric effect, positive and negative alternating periodic electrical signals will be generated, and the generated electrical signals will be connected through wires to the input of the full bridge rectifier circuit. When a positive electric signal is generated, diode D6 and diode _D9 are turned _on to form a closed loop, and electric energy can be stored in capacitor _C1 ; when a negative electric signal is generated, diode _D7 and diode _D8 are turned on to form a closed loop , and the flow direction of the rectified electrical signal is the same as the flow direction of the closed loop electrical signal of the diode D ₆ and the diode D ₉ , so the electric energy is still stored in the capacitor C ₁ . The rectified and stored electrical energy can flow out to the output terminal via _C1 to supply power to low-power electronic devices. The diodes (D ₆ -D ₉ ) may be NI 5408 rectifier diodes, and the capacitance of the capacitor C ₁ is in the range of 100-1000 μF.

In summary, the piezoelectric generator designed in the present invention can solve the technical problems of low energy capture efficiency in micro-energy generators used to capture gas pressure energy in current industrial environments. And the gas flow velocity and flow rate of the piezoelectric generator are amplified, and then the power generation efficiency of the generator can be increased by more than 3 times. It has broad application prospects in the technical field of power supply for low-power electronic devices such as low-power sensors and low-power devices.

Claims (4)

1. a kind of double acting diaphragm type piezoelectric generator using annular space jet excitation, the double acting diaphragm type piezoelectric generator bag Include micropore gas flow rate increment device（1）, holding screw（2）With double acting diaphragm type electric organ（3）, micropore gas flow rate increment device（1） Pass through holding screw（2）With double acting diaphragm type electric organ（3）Threaded connection；The micropore gas flow rate increment device（1）Including cone Shape suction end（1-1）, suction end screw（1-2）, fixes sleeve（1-3）, taper jet end（1-4）, jet end screw（1-5）、 Jet end sealing ring（1-6）With suction end sealing ring（1-7）；The taper suction end（1-1）With fixes sleeve（1-3）Pass through suction Gas end sealing ring（1-7）Air seal, taper suction end（1-1）With fixes sleeve（1-3）Pass through suction end screw（1-2）Screw thread Connection；The taper jet end（1-4）With fixes sleeve（1-3）Pass through jet end sealing ring（1-6）Air seal, taper jet End（1-4）With fixes sleeve（1-3）Pass through jet end screw（1-5）Threaded connection；The double acting diaphragm type electric organ（3）Bag Include electrification component fixed mount（3-1）, fan-shaped electrification component（3-2）, flow-disturbing diaphragm（3-3）With rectangular power generation component（3-4）；It is described Electrification component fixed mount（3-1）With fan-shaped electrification component（3-2）It is fastenedly connected, electrification component fixed mount（3-1）With rectangular power generation Component（3-4）It is fastenedly connected, rectangular power generation component（3-4）With flow-disturbing diaphragm（3-3）It is fastenedly connected；It is characterized in that：The cone Shape suction end（1-1）It is provided with conduction hole（1-1-1）, suction end through hole（1-1-2）, suction end o-ring groove（1-1-3）With Taper suction end screwed hole（1-1-4）；Taper suction end screwed hole（1-1-4）With suction end screw（1-2）Threaded connection；It is described Fixes sleeve（1-3）It is provided with bush whorl hole I（1-3-1）, bush whorl hole I（1-3-1）With suction end screw（1-2）Screw thread Connection；Fixes sleeve（1-3）It is provided with air admission hole（1-3-2）；Fixes sleeve（1-3）It is provided with bush whorl hole II（1-3-3）, Bush whorl hole II（1-3-3）With jet end screw（1-5）Threaded connection；The taper jet end（1-4）It is provided with jet end Intercommunicating pore（1-4-1）, taper puff prot（1-4-2）, jet end screwed hole（1-4-3）, flow-increasing device screwed hole（1-4-4）And spray Gas end o-ring groove（1-4-5）；The jet end screw（1-5）With jet end screwed hole（1-4-3）Threaded connection, flow increasing dress Put screwed hole（1-4-4）With holding screw（2）Threaded connection, jet end sealing ring（1-6）With jet end o-ring groove（1-4- 5）It is fixed；The electrification component fixed mount（3-1）It is provided with generator inlet end（3-1-1）, generator gas outlet（3-1-2）、 Swivelling chute I（3-1-3）, installation screwed hole（3-1-4）With swivelling chute II（3-1-5）；Swivelling chute I（3-1-3）With rectangular power generation group Part（3-4）It is fixed, swivelling chute II（3-1-5）With fan-shaped electrification component（3-2）It is fixed, screwed hole is installed（3-1-4）With clamp screw Nail（2）Threaded connection；The fan-shaped electrification component（3-2）It is provided with fan-shaped metal substrate（3-2-1）With piezoelectric element I（3-2- 2）, fan-shaped metal substrate（3-2-1）With piezoelectric element I（3-2-2）It is fixed；The flow-disturbing diaphragm（3-3）It is provided with electrification component Counterbore（3-3-1）, electrification component counterbore（3-3-1）With rectangular power generation component（3-4）It is fixed；Flow-disturbing diaphragm（3-3）In being provided with Cambered surface（3-3-2）And extrados（3-3-3）；The rectangular power generation component（3-4）It is provided with rectangular metal substrate（3-4-1）And pressure Electric device II（3-4-2）, rectangular metal substrate（3-4-1）With piezoelectric element II（3-4-2）It is fixed.

2. a kind of double acting diaphragm type piezoelectric generator using annular space jet excitation according to claim 1, its feature It is the conduction hole（1-1-1）Radius is R₀, suction end through hole（1-1-2）Radius is R₁, conduction hole（1-1-1）With suction end Through hole（1-1-2）Radius ratio be E=R₀/R₁, the scope that E values meet is 1 ~ 1.5；The jet end intercommunicating pore（1-4-1）Radius For R₃, jet end intercommunicating pore（1-4-1）With suction end through hole（1-1-2）Radius ratio be F=R₃/R₁, F values meet scope be 1.2~1.5；Jet end intercommunicating pore（1-4-1）With air admission hole（1-3-2）Radius ratio be D=R₃/R₂, scope that D values meet for 5 ~ 8。

3. a kind of double acting diaphragm type piezoelectric generator using annular space jet excitation according to claim 1, its feature It is the fan-shaped metal substrate（3-2-1）Radius be R₄, R₄Span be 35 ~ 45 mm；The piezoelectric element I（3- 2-2）Length is a, piezoelectric element I（3-2-2）Length and fan-shaped metal substrate（3-2-1）Radius ratio is M=a/R₄, M value Scope is 0.3 ~ 0.7；The intrados（3-3-2）Radius of corner be R₅, R₅Span be 5 ~ 10 mm.

4. a kind of double acting diaphragm type piezoelectric generator using annular space jet excitation according to claim 1, its feature It is the fan-shaped electrification component（3-2）Middle piezoelectric element I（3-2-2）With rectangular power generation component（3-4）Middle piezoelectric element II（3- 4-2）From piezoelectric ceramic piece PZT or flexible obdurability piezoelectrics PVDF.