Device and method for generating electricity by driving a generator with gas pressure energy

Abstract

The present invention provides a device and method for generating electricity by driving a generator with gas pressure energy, including a pneumatic unit formed by a pneumatic reversing valve, a stroke valve I, a stroke valve II, and a manual reversing valve, which is connected to a high-pressure gas source; the high-pressure gas source drives a double-rod double-acting cylinder connected to the pneumatic unit to reciprocate, the double-rod double-acting cylinder is connected to a rack, the rack meshes with a first gear, the first gear is connected to a gear motion converter to convert the bidirectional rotational motion of the first gear into a continuous unidirectional rotational motion, and the gear motion converter is connected to a generator, thereby realizing that the high-pressure gas source drives the generator to generate electricity through the pneumatic unit, the double-rod double-acting cylinder, and the gear motion converter. The present invention can be applied to generating electricity with natural gas pressure energy, the device has a simple structure, there is no electrical equipment in the whole device, and the safety and reliability are high.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic and pressure energy applications, and more specifically, to a device and method for driving a generator to generate electricity using gas pressure energy. Background Art

[0002] At present, China is in a period of rapid development of clean energy construction, and natural gas has become a common clean energy source in industry and daily life. In the collection and transportation of natural gas, it is necessary to regulate the pressure of natural gas. For example, for general urban civil natural gas, before entering the urban natural gas pipeline network, it needs to enter a natural gas pressure regulating station first. After the high-pressure natural gas is decompressed, it is provided for the gas stove in residents' homes. The natural gas pressure reducing equipment currently used in China is mainly a pressure reducing valve. Since the pressure reducing valve realizes pressure reduction through throttling, a considerable part of the pressure energy is wasted without being reasonably utilized during the pressure reduction process, resulting in energy waste. And how to reasonably utilize the wasted energy, improve the utilization rate of natural gas resources, and reduce unnecessary energy waste is an important issue that cannot be ignored. Summary of the Invention

[0003] In view of the above technical problems, a device and method for driving a generator to generate electricity using gas pressure energy are provided. Through an innovative pneumatic and gear motion conversion unit, the present invention realizes the conversion of gas pressure energy into rotational motion mechanical energy to drive the generator to generate electricity. The device not only realizes the decompression of high-pressure natural gas but also utilizes the pressure energy during the decompression process of high-pressure natural gas to solve the above problems.

[0004] The technical means adopted by the present invention are as follows:

[0005] A device for driving a generator to generate electricity using gas pressure energy, comprising a pneumatic reversing valve, a stroke valve I, and a stroke valve II; the air inlet of the pneumatic reversing valve and the air inlet of the stroke valve II are connected to a high-pressure gas source;

[0006] The working port I of the pneumatic reversing valve is connected to port A of a double-rod double-acting cylinder; the working port II of the pneumatic reversing valve is connected to port B of the double-rod double-acting cylinder;

[0007] The working port of the stroke valve II is connected to the control port of the pneumatic reversing valve and the air inlet of the stroke valve I; the working port of the stroke valve I is open to the atmosphere;

[0008] The piston rod of the double-rod double-acting cylinder is connected to a rack, the rack is fixed on a slider that cooperates with a linear guide rail, and the linear guide rail extends left and right; the stroke valve I and the stroke valve II are respectively arranged on the left and right sides of the piston of the double-rod double-acting cylinder, and when the piston of the double-rod double-acting cylinder moves to the stroke end on the left and right sides respectively, the stroke valve I or the stroke valve II is triggered;

[0009] The rack engages with the first gear; the first gear is coupled to the input shaft of the gear motion converter, and the output shaft of the gear motion converter is coupled to the generator shaft through a coupling.

[0010] Preferably, the air inlet of the manual reversing valve is connected to a high-pressure gas source; the working port of the manual reversing valve is connected to the air inlet of the stroke valve II.

[0011] Preferably, the gear motion converter can convert a bidirectional rotational motion into a continuous unidirectional rotational motion.

[0012] Preferably, the gear motion converter includes the input shaft, on which a second gear and the first gear are coaxially arranged; the two sides of the second gear respectively engage with a third gear and a fourth gear, the third gear and the fourth gear are respectively coupled to one end of an overrunning clutch I and an overrunning clutch II through their central shafts, a fifth gear is mounted on the output shaft, and the output shaft is coupled to the other end of the overrunning clutch I, a sixth gear is coupled to the other end of the overrunning clutch II through its central shaft; the fifth gear and the sixth gear engage with each other, and the overrunning clutch I and the overrunning clutch II have opposite helix directions.

[0013] Preferably, a flywheel is mounted on the output shaft of the gear motion converter, and the flywheel functions to store energy, stabilize the rotational speed, and reduce the speed fluctuation during the operation of the generator.

[0014] Preferably, the exhaust port of the pneumatic reversing valve is connected to a low-pressure gas storage tank.

[0015] The present invention also discloses a power generation method of a device for driving a generator to generate electricity by gas pressure energy, including:

[0016] High-pressure gas enters the working chamber I of the double-rod double-acting cylinder from the working port I of the pneumatic reversing valve and port A of the double-rod double-acting cylinder, the piston of the double-rod double-acting cylinder extends to the right, and when the piston reaches the end of the stroke, it presses down the stroke valve II;

[0017] Pull the manual reversing valve to connect the air inlet of the manual reversing valve with its working port. High-pressure gas supplies air to the control end of the pneumatic reversing valve through the manual reversing valve and the stroke valve II. The pneumatic reversing valve changes its direction. High-pressure gas enters the working chamber II of the double-rod double-acting cylinder from the working port II of the pneumatic reversing valve and port B of the double-rod double-acting cylinder. The piston of the double-rod double-acting cylinder moves to the left. The stroke valve II resets, and the high-pressure gas at the control end of the pneumatic reversing valve is sealed. When the piston reaches the left stroke end, it presses down the stroke valve I, the gas at the control end of the pneumatic reversing valve is discharged, the pneumatic reversing valve resets, and the piston of the double-rod double-acting cylinder moves to the right again, realizing the continuous reciprocating movement of the piston of the double-rod double-acting cylinder in the left and right directions;

[0018] With the reciprocating movement of the piston of the double-rod double-acting cylinder, it drives the rack connected to the piston rod of the double-rod double-acting cylinder to reciprocate on the linear guide rail, thereby driving the first gear meshing with it to rotate bidirectionally, and converting the bidirectional rotational movement into a continuous unidirectional rotational movement through a gear motion converter, enabling the output shaft to achieve continuous unidirectional rotation, thereby driving the connected generator to rotate continuously for power generation.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The device of the present invention uses the pressure energy of gas to generate electricity. The high-pressure gas is directly input into the device of the present invention to do work and generate electricity without decompression, which improves the energy utilization rate, avoids waste, and is conducive to the realization of energy conservation, emission reduction, and the goals of carbon peak and carbon neutrality.

[0021] The device of the present invention has a simple structure, a small construction cost, a small occupied space, and there is no electrical equipment in the whole device, so the safety and reliability are relatively good.

[0022] The device of the present invention has a high efficiency, and can improve the energy conversion efficiency to more than 60%.

[0023] Based on the above reasons, the present invention can be widely promoted in the fields of pneumatic power generation and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of a device for driving a generator to generate electricity by the pressure energy of gas according to the present invention.

[0026] In the figure: 1, manual reversing valve; 2, pneumatic reversing valve; 3, stroke valve I; 4, linear guide; 5, rack; 6, first gear; 7, third gear; 8, second gear; 9, overrunning clutch I; 10, fifth gear; 11, output shaft; 12, flywheel; 13, coupling; 14, generator; 15, sixth gear; 16, overrunning clutch II; 17, fourth gear; 18, double-rod double-acting cylinder; 19, stroke valve II; 20, low-pressure gas storage tank; 21, high-pressure gas source. Specific embodiments

[0027] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way restricts the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0030] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, back, top, bottom, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary statements, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention: the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0032] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0033] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above words have no special meanings. Therefore, it cannot be understood as a limitation on the protection scope of the present invention.

[0034] Embodiment 1

[0035] As Figure 1 shown, a device for driving a generator to generate electricity by gas pressure energy includes a pneumatic directional control valve 2, a stroke valve I 3, a stroke valve II 19, and a manual directional control valve 1; the air inlet of the pneumatic directional control valve 2 is connected to a high-pressure gas source 21; the air inlet of the manual directional control valve 1 is connected to the high-pressure gas source, and the working port of the manual directional control valve 1 is connected to the air inlet of the stroke valve II 19. The manual directional control valve 1 adopts a two-position three-way manual directional control valve.

[0036] The pneumatic directional control valve 2 adopts a two-position five-way pneumatic directional control valve, its working port I is connected to port A of a double-rod double-acting cylinder 18; the working port II of the pneumatic directional control valve 2 is connected to port B of the double-rod double-acting cylinder 18; the exhaust port of the pneumatic directional control valve 2 is connected to a low-pressure gas storage tank 20.

[0037] The working port of the stroke valve II 19 is connected to the control port of the pneumatic reversing valve 1 and the air inlet of the stroke valve I 3; the working port of the stroke valve I 3 is open to the atmosphere;

[0038] The piston rod of the double-rod double-acting cylinder 18 is connected to the rack 5; the rack 5 is fixed on a slider that cooperates with the linear guide 4;

[0039] The stroke valve I 3 and the stroke valve II 19 are respectively arranged on the left and right sides of the piston of the double-rod double-acting cylinder 18. After the piston of the double-rod double-acting cylinder 18 moves to the stroke end points to the left and right respectively, the stroke valve I 3 or the stroke valve II 19 is triggered;

[0040] The rack 5 meshes with the first gear 6; the first gear 6 is connected to the input shaft of the gear motion converter. The output shaft 11 of the gear motion converter is connected to the shaft of the generator 14 through a coupling 13, and a flywheel 12 is installed on the output shaft 11 of the gear motion converter.

[0041] The gear motion converter can convert bidirectional rotational motion into continuous unidirectional rotational motion.

[0042] The gear motion converter includes the input shaft, and a second gear 8 and the first gear 6 are coaxially arranged on the input shaft; the two sides of the second gear 8 respectively mesh with a third gear 7 and a fourth gear 17. The third gear 7 and the fourth gear 17 are respectively connected to one end of an overrunning clutch I 9 and an overrunning clutch II 16 through their central shafts. A fifth gear 10 is installed on the output shaft 11, and the output shaft 11 is connected to the other end of the overrunning clutch I 9. A sixth gear 15 is connected to the other end of the overrunning clutch II 16 through its central shaft; the fifth gear 10 and the sixth gear 15 mesh, and the overrunning clutch I 9 and the overrunning clutch II 16 have opposite helix directions.

[0043] When the rack 5 moves to the right, the first gear 6 meshing with the rack 5 rotates clockwise, so that the coaxially arranged second gear 8 also rotates clockwise. The rotation of the second gear 8 drives the meshing third gear 7 and fourth gear 17 to rotate counterclockwise. While the third gear 7 rotates counterclockwise, the connected overrunning clutch I 9 engages, driving the fifth gear 10 to rotate counterclockwise together, so that the output shaft 11 rotates counterclockwise. Because the overrunning clutch I 9 and the overrunning clutch II 16 have opposite helix directions, the overrunning clutch II 16 is in a disengaged state at this time. At this time, the sixth gear 15 meshing with the fifth gear 10 rotates clockwise.

[0044] When the rack 5 moves to the left, the first gear 6 meshing with the rack 5 rotates counterclockwise, causing the coaxial second gear 8 to rotate counterclockwise. The rotation of the second gear 8 drives the third gear 7 and the fourth gear 17 meshing with it to rotate clockwise. While the fourth gear 17 rotates clockwise, the overrunning clutch II 16 engaged with it is engaged, driving the sixth gear 15 to rotate clockwise together. Since the rotation directions of the overrunning clutch I 9 and the overrunning clutch II 15 are opposite, the overrunning clutch I 9 is in a disengaged state at this time, and the fifth gear 10 meshing with the sixth gear 15 rotates counterclockwise, so the output shaft 11 still rotates counterclockwise. In this way, when the rack 5 reciprocates linearly, the gear motion converter realizes the continuous one-way rotational motion of the output shaft 11.

[0045] Embodiment 2

[0046] As Figure 1 shown, based on the device provided in Embodiment 1, the present invention also discloses a power generation method for a device that drives a generator to generate electricity using gas pressure energy, including:

[0047] High-pressure gas enters the working chamber I of the double-rod double-acting cylinder 18 from the working port I of the pneumatic reversing valve 2 and the port A of the double-rod double-acting cylinder 18, and the piston of the double-rod double-acting cylinder 18 extends to the right. When the piston reaches the end of the stroke, it presses down the stroke valve II 19;

[0048] Pull the manual reversing valve 1 to connect the air inlet of the manual reversing valve 1 to its working port. High-pressure gas supplies gas to the control end of the pneumatic reversing valve 2 through the manual reversing valve 1 and the stroke valve II 19. The pneumatic reversing valve 2 changes its direction. High-pressure gas enters the working chamber II of the double-rod double-acting cylinder from the working port II of the pneumatic reversing valve 2 and the port B of the double-rod double-acting cylinder 18. The piston of the double-rod double-acting cylinder 18 moves to the left. The stroke valve II 19 resets, and the high-pressure gas at the control end of the pneumatic reversing valve 2 is sealed. When the piston reaches the left end of the stroke, it presses down the stroke valve I 3, and the gas at the control end of the pneumatic reversing valve 2 is discharged. The pneumatic reversing valve 2 resets, and the piston of the double-rod double-acting cylinder 18 moves to the right again, realizing the continuous reciprocating motion of the piston of the double-rod double-acting cylinder 18 in the left-right direction. As long as the manual reversing valve 1 does not change its starting state, the double-rod double-acting cylinder 18 will continuously reciprocate;

[0049] With the reciprocating motion of the piston of the double-rod double-acting cylinder 18, it drives the rack 5 connected to the piston rod of the double-rod double-acting cylinder 18 to reciprocate on the linear guide 4, thereby driving the first gear 5 meshing with it to rotate bidirectionally, and converting the bidirectional rotational motion into a continuous one-way rotational motion through the gear motion converter, enabling the output shaft 11 to achieve continuous one-way rotation, thereby driving the connected generator 14 to rotate continuously to generate electricity.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for driving a generator to generate electricity using gas pressure energy, characterized in that, it includes a pneumatic directional control valve, stroke valve I, and stroke valve II; the air inlet of the pneumatic directional control valve and the air inlet of stroke valve II are connected to a high-pressure gas source; the working port I of the pneumatic directional control valve is connected to port A of a double-rod double-acting cylinder; the working port II of the pneumatic directional control valve is connected to port B of the double-rod double-acting cylinder; the working port of stroke valve II is connected to the control port of the pneumatic directional control valve and the air inlet of stroke valve I; the working port of stroke valve I is open to the atmosphere; the piston rod of the double-rod double-acting cylinder is connected to a rack, the rack is fixed on a slider that cooperates with a linear guide rail, and the linear guide rail extends left and right; stroke valve I and stroke valve II are respectively arranged on the left and right sides of the piston of the double-rod double-acting cylinder, and when the piston of the double-rod double-acting cylinder moves to the stroke end points on the left and right sides respectively, it triggers stroke valve I or stroke valve II; the rack meshes with a first gear; the first gear is connected to the input shaft of a gear motion converter, and the output shaft of the gear motion converter is connected to the generator shaft through a coupling; the gear motion converter is used to convert a two-way rotational motion into a continuous one-way rotational motion; the gear motion converter includes the input shaft, on which a second gear and the first gear are coaxially arranged; both sides of the second gear mesh with a third gear and a fourth gear respectively, the third gear and the fourth gear are respectively connected to one end of an overrunning clutch I and an overrunning clutch II through their central shafts, a fifth gear is installed on the output shaft, and the output shaft is connected to the other end of the overrunning clutch I; a sixth gear is connected to the other end of the overrunning clutch II through its central shaft; the fifth gear and the sixth gear mesh, and the overrunning clutch I and the overrunning clutch II have opposite helix directions.

2. The device for driving a generator to generate electricity using gas pressure energy according to claim 1, characterized in that, the air inlet of a manual directional control valve is connected to a high-pressure gas source; the working port of the manual directional control valve is connected to the air inlet of stroke valve II.

3. The device for driving a generator to generate electricity using gas pressure energy according to claim 1, characterized in that, a flywheel is installed on the output shaft of the gear motion converter.

4. The device for driving a generator to generate electricity using gas pressure energy according to claim 1, characterized in that, the exhaust port of the pneumatic directional control valve is connected to a low-pressure gas storage tank.

5. The power generation method of the device for driving a generator to generate electricity using gas pressure energy according to any one of claims 1 to 4, characterized in that, it includes: High-pressure gas enters the working chamber I of the double-rod double-acting cylinder from the working port I of the pneumatic directional control valve and port A of the double-rod double-acting cylinder, the piston of the double-rod double-acting cylinder extends to the right, and when the piston reaches the stroke end point, it presses down stroke valve II; Pull the manual reversing valve to connect the air inlet of the manual reversing valve with its working port. High-pressure gas supplies air to the control end of the pneumatic reversing valve through the manual reversing valve and the stroke valve II. The pneumatic reversing valve changes its direction. High-pressure gas enters the working chamber II of the double-rod double-acting cylinder from the working port II of the pneumatic reversing valve and port B of the double-rod double-acting cylinder. The piston of the double-rod double-acting cylinder moves to the left. The stroke valve II resets, and the high-pressure gas at the control end of the pneumatic reversing valve is sealed. When the piston reaches the left stroke end point, it presses down the stroke valve I, the gas at the control end of the pneumatic reversing valve is discharged, the pneumatic reversing valve resets, and the piston of the double-rod double-acting cylinder moves to the right again, realizing the continuous reciprocating movement of the piston of the double-rod double-acting cylinder in the left and right directions. With the reciprocating movement of the piston of the double-rod double-acting cylinder, it drives the rack connected to the piston rod of the double-rod double-acting cylinder to reciprocate on the linear guide rail, thereby driving the first gear meshing with it to rotate bidirectionally, and converting the bidirectional rotational movement into a continuous unidirectional rotational movement through the gear type motion converter, enabling the output shaft to achieve continuous unidirectional rotation, thereby driving the connected generator to rotate continuously for power generation.

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