CN109098943A - A kind of self-action hydraulic electricity generation deceleration strip device - Google Patents
A kind of self-action hydraulic electricity generation deceleration strip device Download PDFInfo
- Publication number
- CN109098943A CN109098943A CN201811180946.5A CN201811180946A CN109098943A CN 109098943 A CN109098943 A CN 109098943A CN 201811180946 A CN201811180946 A CN 201811180946A CN 109098943 A CN109098943 A CN 109098943A
- Authority
- CN
- China
- Prior art keywords
- electricity generation
- deceleration strip
- valve
- module
- strip device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
- E01F9/529—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users specially adapted for signalling by sound or vibrations, e.g. rumble strips; specially adapted for enforcing reduced speed, e.g. speed bumps
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of self-action hydraulic electricity generation deceleration strip devices to be specifically included using modularization mounting means: pulsed power source module, continuous power module and electricity generation module, and is connected between module using hydraulic circuit；Wherein, pulsed power source module includes cam link mechanism, plunger case, throttle valve, piston cylinder, check valve, spring, filter, pilot operated compound relief valve, damper and two-position two-way electromagnetic directional valve；Continuous power module includes two position, three-way electromagnetic change valve and accumulator.Self-action hydraulic electricity generation deceleration strip device according to the present invention uses pulsed power source, improves the energy that system is filled within the unit time to accumulator；The form that energy is alternately filled using double accumulators, solves the problems, such as not recovering energy when single accumulator exoergic；And the vibrational energy generated when vehicle is passed through deceleration strip is converted into electric energy and carries out secondary use, and applicability is good；Energy recovery efficiency is high, highly reliable.
Description
Technical field
The present invention relates to a kind of self-action hydraulic electricity generation deceleration strip devices.
Background technique
In order to ensure safe driving, highway, charge station and urban road etc. have a large amount of highway deceleration strip device.
And vehicle frequently passes through deceleration strip device, thus can generate many power consumptions, there are biggish energy wastes.Therefore, right
The energy of this waste, which is recycled and recycled, is of great significance for the saving of the energy.
Currently, more and more deceleration strip for power generation devices are used, to be improved to traditional deceleration, vehicle is passed through
The vibrational energy generated when deceleration strip is converted into electric energy and carries out secondary use, to realize energy conservation and environmental protection.For example, patent
Deceleration strip generating set disclosed in CN205047378U, patent CN206693082U and patent CN204551316U, using machine
Vibrational energy when vehicle is passed through deceleration strip by the modes such as tool power generation, Electromagnetic generation generates electricity.
Summary of the invention
It is an object of the invention to be further improved to traditional deceleration strip device, using the principle of hydraulic electricity generation, by vehicle
The vibrational energy generated when by deceleration strip generates electricity, and uses or be connected to the grid for communal facility and carry out secondary use.
To achieve the above object, the present invention provides a kind of self-action hydraulic electricity generation deceleration strip devices.It is according to the present invention
Hydraulic electricity generation deceleration strip device uses modular mounting means, specifically includes following module: pulsed power source module, continuous
Power module and electricity generation module；Also, it is connected between modules using hydraulic circuit.
Hydraulic electricity generation deceleration strip device according to the present invention, it is preferable that pulsed power source module is characterized in that: the mould
Block includes cam link mechanism, plunger case, throttle valve, piston cylinder, check valve, spring, filter, pilot operated compound relief valve, damping
Device and two-position two-way electromagnetic directional valve.
Hydraulic electricity generation deceleration strip device according to the present invention, it is further preferred that pulsed power source module is using multiple
The plunger case form in parallel with multiple piston cylinders.Also, the quantity of throttle valve and check valve also can be according to plunger case and piston
The quantity of cylinder is increased and decreased.According to one embodiment of present invention, pulsed power source module uses 8 plunger cases and 8
A piston cylinder is in parallel.Also, the quantity of the throttle valve, spring and the check valve that are attached thereto also is 8.
Hydraulic electricity generation deceleration strip device according to the present invention, it is preferable that pulsed power source module can be convex by changing
The shape for taking turns cam in link mechanism changes the stroke of plunger in plunger case in turn.
Hydraulic electricity generation deceleration strip device according to the present invention, it is further preferred that the plunger of the pulsed power source module
The connection of the oil inlet of cylinder and one-way throttle valve；The oil outlet of one-way throttle valve and the rod chamber of piston cylinder connect；Oil absorption filter
Oil inlet connect with fuel tank, oil outlet is connect with the oil inlet of each check valve；The oil outlet of each check valve and each work
The rodless cavity of plug cylinder connects；Piston cylinder uses spring automatic reset；The rodless cavity of each piston cylinder again respectively with each check valve
Oil inlet connection；Each check valve oil outlet respectively with oil inlet before the valve of pilot operated compound relief valve and two position, three-way electromagnetic change valve
Connection；The oil outlet oil return box of pilot operated compound relief valve；The connection of the oil inlet of pilot operated compound relief valve control port and damper；Damping
Oil inlet connects before the oil outlet of device and the valve of two-position two-way electromagnetic directional valve；Oil outlet after the valve of two-position two-way electromagnetic directional valve
Take back fuel tank.
Hydraulic electricity generation deceleration strip device according to the present invention, it is preferable that continuous power module is characterized in that: continuous energy supply
Module can include two position, three-way electromagnetic change valve and accumulator.
Hydraulic electricity generation deceleration strip device according to the present invention, it is further preferred that two-position three way electricity in continuous power module
The quantity of magnetic reversal valve and accumulator is multiple；And each two position, three-way electromagnetic change valve connects with each accumulator respectively
It connects, so that multiple accumulators can alternately fill energy exoergic.According to one embodiment of present invention, the continuous power module
In two position, three-way electromagnetic change valve and accumulator be 2, and 2 two position, three-way electromagnetic change valves divide with 2 accumulators
It is not connected with each other.
Hydraulic electricity generation deceleration strip device according to the present invention, it is preferable that electricity generation module is characterized in that: the module includes adjusting
Fast valve, motor, shaft coupling, generator, cooler and filter.Specifically, in electricity generation module the oil inlet of speed governing valve respectively with
Oil outlet connects after the valve of two position, three-way electromagnetic change valve, the oil inlet of the oil outlet connection motor of speed governing valve；Motor it is fuel-displaced
The oil inlet of mouth connection cooler；The oil inlet of the oil outlet connection filter of cooler；The oil outlet of filter takes back fuel tank；
Motor is connect by shaft coupling with generator.
Hydraulic electricity generation deceleration strip device according to the present invention, in pulsed power source module using multiple plunger cases with it is multiple
Piston cylinder is in parallel, to be capable of the kinetic energy of high efficiente callback vehicle generation when vehicle travels frequently over deceleration strip, be existed with improving system
Give accumulator filled energy in unit time, energy recovery rate is high.
Hydraulic electricity generation deceleration strip device according to the present invention, continuous power module is alternately filled using multiple accumulators can exoergic
Principle, thus make system fill can and exergonic process linking it is more close, and while solving single accumulator exoergic, can not return
The problem of receiving energy, further improves the energy recovery rate of system.
The motor of hydraulic electricity generation deceleration strip device according to the present invention, electricity generation module can stablize output revolving speed, thus band
Dynamic generator works in synchronous rotational speed, to meet mains frequency requirement.
Hydraulic electricity generation deceleration strip device according to the present invention has the following beneficial effects: using pulsed power source, improves
The energy that system was filled with to accumulator within the unit time；The form that energy is alternately filled using double accumulators, solves single storage
The problem of can not recovering energy when energy device exoergic；The vibrational energy generated when vehicle is passed through deceleration strip is converted into electric energy and carries out
Secondary use, applicability are good；Energy recovery efficiency is high, and power generation process is stablized, highly reliable.
Detailed description of the invention
Fig. 1 is the schematic illustration of hydraulic electricity generation deceleration strip device according to the present invention；
Fig. 2 is the schematic illustration of the hydraulic power source module of hydraulic electricity generation deceleration strip device according to the present invention；
Fig. 3 is the schematic illustration of the continuous power module of hydraulic electricity generation deceleration strip device according to the present invention；
Fig. 4 is the schematic illustration of the electricity generation module of hydraulic electricity generation deceleration strip device according to the present invention；
Fig. 5 is the deceleration strip illustraton of model of hydraulic electricity generation deceleration strip device according to the present invention.
Specific embodiment
Hydraulic electricity generation deceleration strip device of the invention is further described with specific embodiment with reference to the accompanying drawing.
Fig. 1 shows the schematic illustration of hydraulic electricity generation deceleration strip device according to the present invention.Hydraulic electricity generation of the invention
Deceleration strip device uses modular mounting means, wherein specifically including following module: pulsed power source module, continuous confession
It can module and electricity generation module.
As shown in Figure 1, hydraulic electricity generation deceleration strip device according to the present invention can include specifically deceleration strip 1, connecting rod 2, connect
Bar 3, cam 4, plunger case 5, one-way throttle valve 6, spring 7, piston cylinder 8, check valve 9, check valve 10, filter 11, fuel tank 12,
Pilot operated compound relief valve 13, damper 14, two-position two-way electromagnetic directional valve 15, two position, three-way electromagnetic change valve 16, accumulator 17, two
Position three-way solenoid valve 18, accumulator 19, speed governing valve 20, fixed displacement motor 21, shaft coupling 22, generator 23, cooler 24 and
Filter 25.Wherein, pulsed power source module includes: the cam link mechanism that connecting rod 3 and cam 4 are constituted, plunger case 5, list
To throttle valve 6, spring 7, piston cylinder 8, check valve 9, check valve 10, filter 11, pilot operated compound relief valve 13, damper 14 and two
Two electric change valves 15 of position.Also, continuous power module includes: two position, three-way electromagnetic change valve 16, accumulator 17, two three
Electric change valve 18 and accumulator 19.And electricity generation module includes: speed governing valve 20, fixed displacement motor 21, shaft coupling 22, power generation
Machine 23, cooler 24 and filter 25.
Further, as depicted in figs. 1 and 2, in pulsed power source module, simultaneously using 8 plunger cases and 8 piston cylinders
The form of connection being capable of the vibration of high efficiente callback vehicle and the kinetic energy that generates thus when vehicle travels frequently over deceleration strip 1.
Also, hydraulic electricity generation deceleration strip device according to the present invention, when vehicle passes through deceleration strip 1, deceleration strip 1 is moved down,
Pulse pump work is driven by link mechanism, the plunger stretching of pulse pump plunger cylinder 5 is different in size, and then drives in piston cylinder 8
Piston motion, control 8 rodless cavity oil extraction of piston cylinder or oil suction.The plunger case 5 and one-way throttle valve 6 of pulsed power source module
Oil inlet connection；The oil outlet of one-way throttle valve 6 is connect with the rod chamber of piston cylinder 8；The oil inlet of oil absorption filter 11 with
Fuel tank connection, oil outlet are connect with the oil inlet of each check valve 9；The nothing of the oil outlet of each check valve 9 and each piston cylinder 8
Rod cavity connection；Piston cylinder 8 uses spring automatic reset；The rodless cavity of each piston cylinder 8 again respectively with each check valve 10 into
Hydraulic fluid port connection；Each 10 oil outlet of check valve is electric with pilot operated compound relief valve 13, two position, three-way electromagnetic change valve 16, two-position three way respectively
Oil inlet connects before the valve of magnetic reversal valve 18；13 oil outlet oil return box of pilot operated compound relief valve；13 control port of pilot operated compound relief valve
It is connect with the oil inlet of damper 14；Oil inlet connects before the oil outlet of damper 14 and the valve of two-position two-way electromagnetic directional valve 15
It connects；Oil outlet takes back fuel tank after the valve of two-position two-way electromagnetic directional valve 15.
As shown in figures 1 and 3, in continuous power module, two position, three-way electromagnetic change valve 16 is connect with accumulator 17；Two
Position three-way solenoid valve 18 is connect with accumulator 19.Also, in the continuous power module, two-position three-way electromagnetic commutates when initial
Valve 16 powers off, and two position, three-way electromagnetic change valve 18 is powered.The oil liquid of the rodless cavity discharge of piston cylinder 8 is by check valve 10, then
Accumulator 19 is preferentially pressed by two position, three-way electromagnetic change valve 18.When pressure reaches critical value in accumulator 19, two
Three-way solenoid valve 16 is powered, and two position, three-way electromagnetic change valve 18 powers off, and the high-voltage oil liquid in accumulator 19 is through two-position three way
Solenoid directional control valve 18 flows through speed governing valve 20, then flows into fixed displacement motor 21 again, and motor 21 exports constant rotational speed and passes to power generation
Machine generates electricity, and the position that accumulator 17 takes over accumulator 19 continues to receive the oil liquid of hydraulic cylinder indentation.When 17 pressure of accumulator
When reaching critical value, the on-off electricity condition of two position, three-way electromagnetic change valve 16 and 18 is converted again, and accumulator 17 carries out exoergic, accumulation of energy
The position that device 19 takes over accumulator 17 continues to receive hydraulic cylinder indentation oil liquid, and alternately with this, make system fills energy and exoergic
Process linking is more close, to guarantee that energy of the vehicle by deceleration strip loss is all absorbed.
As shown in Figure 1 and Figure 4, in electricity generation module, the oil inlet of speed governing valve 20 respectively with two position, three-way electromagnetic change valve
16, oil outlet connects after the valve of two position, three-way electromagnetic change valve 18, and 20 oil outlet of speed governing valve connects the oil inlet of motor 21；Motor
The oil inlet of 21 oil outlet connection cooler 24；The oil inlet of the oil outlet connection filter 25 of cooler 24；Filter 25
Oil outlet take back fuel tank；Motor 21 is connect by shaft coupling 22 with generator 23；In electricity generation module, motor 21 is stablized output and is turned
Speed, drawing generator 23 work in synchronous rotational speed, meet mains frequency requirement.
It should be pointed out that hydraulic electricity generation deceleration strip device according to the present invention, the above preferred embodiment is merely illustrative example of
Purpose under the premise of not departing from the range of appended claims of the present invention, may be used also for those skilled in the art of the present technique
To make various modifications and variations, these improvements and modifications should be considered as belonging to protection scope of the present invention.
Attached drawing table number illustrates list
1 deceleration strip
2,3 connecting rods
4 cams
5 plunger cases
6 one-way throttle valves
7 springs
8 piston cylinders
9,10 check valves
11 filters
12 fuel tanks
13 pilot operated compound relief valves
14 dampers
15 two-position two-way electromagnetic directional valves
16,18 two position, three-way electromagnetic change valves
17,19 accumulators
20 speed governing valves
21 motors
22 shaft couplings
23 generators
24 coolers
25 filters
Claims (8)
1. a kind of self-action hydraulic electricity generation deceleration strip device, which is characterized in that the hydraulic electricity generation deceleration strip device uses module
Change mounting means, comprising: pulsed power source module, continuous power module and electricity generation module；And
Wherein, the pulsed power source module includes cam link mechanism, plunger case, throttle valve, piston cylinder, check valve, bullet
Spring, filter, pilot operated compound relief valve, damper and two-position two-way electromagnetic directional valve；
Wherein, the continuous power module includes two position, three-way electromagnetic change valve and accumulator；
Wherein, the electricity generation module includes speed governing valve, motor, shaft coupling, generator, cooler and filter；And
Wherein, the pulsed power source module uses hydraulic time between the continuous power module and the electricity generation module
Road connection.
2. hydraulic electricity generation deceleration strip device as described in claim 1, which is characterized in that wherein, the pulsed power source mould
It is in parallel with multiple piston cylinders using multiple plunger cases in block.
3. hydraulic electricity generation deceleration strip device as described in claim 1, which is characterized in that wherein, the throttle valve, the spring
And the quantity of the check valve can be increased and decreased according to the quantity of the plunger case and the piston cylinder.
4. hydraulic electricity generation deceleration strip device as described in claim 1, which is characterized in that wherein, the pulsed power source mould
Block changes the stroke of plunger in the plunger case by changing the shape of cam in the cam link mechanism.
5. hydraulic electricity generation deceleration strip device as described in claim 1, which is characterized in that wherein, in the continuous power module
The quantity of the two position, three-way electromagnetic change valve is multiple, and the quantity of the accumulator is multiple.
6. hydraulic electricity generation deceleration strip device as claimed in claim 5, which is characterized in that wherein, each two-position three way electricity
Magnetic reversal valve is connected with each accumulator respectively.
7. hydraulic electricity generation deceleration strip device as claimed in claim 6, which is characterized in that wherein, the continuous power module benefit
It is carried out alternately filling energy exoergic with multiple accumulators, continuously to be powered.
8. hydraulic electricity generation deceleration strip device as described in claim 1, which is characterized in that wherein, the motor of the electricity generation module
Stablize output revolving speed, so that generator be driven to work with synchronous rotational speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180946.5A CN109098943B (en) | 2018-10-09 | 2018-10-09 | Automatic hydraulic power generation deceleration strip device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180946.5A CN109098943B (en) | 2018-10-09 | 2018-10-09 | Automatic hydraulic power generation deceleration strip device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109098943A true CN109098943A (en) | 2018-12-28 |
| CN109098943B CN109098943B (en) | 2020-08-28 |
Family
ID=64868456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811180946.5A Active CN109098943B (en) | 2018-10-09 | 2018-10-09 | Automatic hydraulic power generation deceleration strip device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109098943B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107470A (en) * | 2019-06-18 | 2019-08-09 | 燕山大学 | A kind of movable power generator of cylinder barrel based on deceleration driven |
| CN110424287A (en) * | 2019-08-21 | 2019-11-08 | 新昌县诺趣智能科技有限公司 | A kind of deceleration strip of traffic construction |
| CN112343779A (en) * | 2020-10-28 | 2021-02-09 | 华中科技大学 | Staggered deceleration strip power generation equipment based on hydraulic drive |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997047880A1 (en) * | 1996-06-14 | 1997-12-18 | Iradj Hessabi | Drive for a generator |
| WO2013072538A1 (en) * | 2011-11-15 | 2013-05-23 | Manuel Castillo Martinez | System for producing electric power using gravity |
| CN105179185A (en) * | 2015-09-11 | 2015-12-23 | 武汉广益交通科技股份有限公司 | Pressure power generation device |
| CN206397666U (en) * | 2017-01-16 | 2017-08-11 | 易彬 | Road electricity generation system |
| CN108547747A (en) * | 2018-03-28 | 2018-09-18 | 东北大学 | Multi-stage speed-reducing band energy collecting device based on hydraulic pressure |
-
2018
- 2018-10-09 CN CN201811180946.5A patent/CN109098943B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997047880A1 (en) * | 1996-06-14 | 1997-12-18 | Iradj Hessabi | Drive for a generator |
| WO2013072538A1 (en) * | 2011-11-15 | 2013-05-23 | Manuel Castillo Martinez | System for producing electric power using gravity |
| CN105179185A (en) * | 2015-09-11 | 2015-12-23 | 武汉广益交通科技股份有限公司 | Pressure power generation device |
| CN206397666U (en) * | 2017-01-16 | 2017-08-11 | 易彬 | Road electricity generation system |
| CN108547747A (en) * | 2018-03-28 | 2018-09-18 | 东北大学 | Multi-stage speed-reducing band energy collecting device based on hydraulic pressure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107470A (en) * | 2019-06-18 | 2019-08-09 | 燕山大学 | A kind of movable power generator of cylinder barrel based on deceleration driven |
| CN110424287A (en) * | 2019-08-21 | 2019-11-08 | 新昌县诺趣智能科技有限公司 | A kind of deceleration strip of traffic construction |
| CN110424287B (en) * | 2019-08-21 | 2021-05-04 | 德清博发智能科技有限公司 | Deceleration strip for traffic road construction |
| CN112343779A (en) * | 2020-10-28 | 2021-02-09 | 华中科技大学 | Staggered deceleration strip power generation equipment based on hydraulic drive |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109098943B (en) | 2020-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109098943A (en) | A kind of self-action hydraulic electricity generation deceleration strip device | |
| CN104791307B (en) | A kind of gear trailing type two cylinder four-stroke hydraulic free-piston engine | |
| CN103603765B (en) | Offshore type Wave energy sea water desalinating is in conjunction with electricity generating device | |
| CN104412486A (en) | Systems and methods for compressing and expanding a gas utilizing a double-acting piston and hydraulic actuator | |
| CN105059274B (en) | A kind of vehicle energy conversion and recovery device | |
| CN102954050B (en) | The piston type energy-storage system of a kind of hydraulic pressure-air pressure combination | |
| CN104912660A (en) | Two-cylinder four-stroke hydraulic free piston engine based on electric control compression stroke | |
| CN104196785B (en) | A kind of closed type energy-saving type shield propulsion hydraulic system using multiplex pump to drive | |
| CN109611170A (en) | Free piston expander based on composite power source-linear electric generator vehicle waste heat recovery system | |
| CN109404211A (en) | A kind of wave-power device | |
| CN202612230U (en) | Fluid supercharging device | |
| CN101463806B (en) | Energy-saving power supply device | |
| CN106150850B (en) | A kind of compound hydraulic drive type wave energy generating set | |
| CN202538447U (en) | Vertical press filter hydraulic system | |
| CN101970873A (en) | Power conversion device | |
| CN202017666U (en) | Gas supercharging device | |
| CN204591821U (en) | A kind of gear follow-up-type two cylinder four-stroke hydraulic free-piston engine | |
| CN206071790U (en) | A kind of compound hydraulic drive type wave energy generating set | |
| CN202431428U (en) | Clean electric energy production device | |
| CN110206590A (en) | A kind of free plunger expanding machine and hydraulic power generating unit | |
| CN104989686B (en) | Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving method thereof | |
| CN202597031U (en) | Air recovery and secondary compression device | |
| CN106150566B (en) | A kind of generating equipment based on compressed air-driven technology | |
| CN105020017A (en) | Internal combustion electromagnetic air engine | |
| CN210599612U (en) | Continuous impact pressurization system for double-pump oil supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |