CN215672959U - Servo gas-liquid loading hydraulic cylinder - Google Patents
Servo gas-liquid loading hydraulic cylinder Download PDFInfo
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- CN215672959U CN215672959U CN202121293038.4U CN202121293038U CN215672959U CN 215672959 U CN215672959 U CN 215672959U CN 202121293038 U CN202121293038 U CN 202121293038U CN 215672959 U CN215672959 U CN 215672959U
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Abstract
The utility model discloses a servo gas-liquid loading hydraulic cylinder which comprises a cylinder head, wherein a left cylinder barrel is arranged on the left side of the cylinder head, a right cylinder barrel is arranged on the right side of the cylinder head, a piston mechanism is arranged in an inner cavity of the right cylinder barrel, a connecting flange II is arranged on the left side of the cylinder head, a connecting flange III is arranged on the right side of the cylinder head, a left cylinder tail is arranged at the left end of the left cylinder barrel, a connecting flange I is arranged on the right side of the left cylinder tail, an air inlet one-way valve I and an air outlet one-way valve I are arranged on the left side of the left cylinder tail, a right cylinder tail is arranged at the right end of the right cylinder barrel, a connecting flange IV is arranged on the left side of the right cylinder tail, a displacement sensor is arranged in the middle of the right side of the right cylinder tail, an air inlet one-way valve II is arranged on the left side of the displacement sensor, an air outlet one-way valve II is arranged below the air inlet one-way valve II, and lifting ring screws are arranged at the upper end and the lower end of the right side wall of the right cylinder tail. The utility model has the advantages of reasonable structural design, simple structure, low noise, good energy-saving effect, low leakage rate, low oil consumption, few easily-damaged parts, simple maintenance and low operation cost.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to a servo gas-liquid loading hydraulic cylinder.
Background
With the increasing number of clean energy vehicles, the domestic CNG vehicle gas filling industry develops for more than ten years, and the core equipment of a gas filling station is developed from a single traditional crank connecting rod type mechanical compressor to a gas filling system of a hydraulic horizontal pushing station and a plurality of currently widely seen gas-liquid loading hydraulic cylinders and other equipment.
Firstly, the method comprises the following steps: because the traditional compressor unit has large vibration, particularly in the high-speed running process, gaps exist among all moving parts, the high-frequency opening and closing of an air valve and the like, impact sound is generated, the noise of a bare engine is mostly more than 90 decibels, and the noise generated in the running process is higher;
secondly, the method comprises the following steps: the traditional compressor has the disadvantages of large body, large occupied area, complex structure and small internal overall space, so that the overall heat dissipation is poor and the installation and maintenance are difficult;
thirdly, the method comprises the following steps: because the crank drives the piston to run at a high speed, the filler and the piston ring are indispensable and have gaps in the cylinder, the natural gas leakage cannot be avoided, the leakage rate is increased, the leakage rate of the common domestic new compressor is about 0.65 percent, and the leakage rate is about 1 to 3 percent later;
fourthly: the pneumatic and hydraulic loading hydraulic cylinder has been developed successfully in the market at present, the action reversing of the pneumatic and hydraulic loading hydraulic cylinder is generally controlled by an electromagnetic reversing valve, proximity switches are arranged at two ends of the loading cylinder, when a piston of the hydraulic cylinder runs to one end, the proximity switches send signals to control the piston to reverse, so that the piston of the loading cylinder automatically reciprocates, and loaded fuel gas is continuously conveyed into a high-pressure gas tank. Because the proximity switches are arranged at the two ends of the hydraulic cylinder, the signaling distance is short, and the piston is easy to collide with the proximity switches due to carelessness, so that the proximity switches are damaged, and the loading cylinder cannot work normally;
to this end, we propose a servo pneumatic hydraulic cylinder.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provides a servo gas-liquid loading hydraulic cylinder which is simple in structure, low in noise, good in energy-saving effect, low in leakage rate, low in oil consumption, few in easily-damaged parts, simple to maintain, low in operation cost and long in service life.
In order to achieve the technical purpose and achieve the technical effect, the utility model is realized by the following technical scheme:
a servo gas-liquid loading hydraulic cylinder comprises a cylinder head, wherein a left cylinder barrel is arranged on the left side of the cylinder head, a right cylinder barrel is arranged on the right side of the cylinder head, a piston mechanism is arranged in an inner cavity of the right cylinder barrel, and the left end of the piston mechanism extends into the inner cavity of the left cylinder barrel;
the top of the cylinder head is provided with an oil port A and an oil port B, the oil port A is positioned on the left side of the oil port B, the left side of the cylinder head is provided with a second connecting flange, and the right side of the cylinder head is provided with a third connecting flange;
the left end of the left cylinder barrel is provided with a left cylinder tail, the right side of the left cylinder tail is provided with a first connecting flange, the left side of the left cylinder tail is provided with a first air inlet check valve and a first air outlet check valve, and the first air inlet check valve is positioned above the first air outlet check valve;
the right-hand member of right side cylinder section is provided with right cylinder tail, the left side of right side cylinder tail is provided with flange four, be provided with displacement sensor in the middle of the right side of right side cylinder tail, displacement sensor's left side is provided with the check valve two that admits air, the below of the check valve two that admits air is provided with the check valve two that gives vent to anger, and admits air the check valve two and all install on right cylinder tail with the check valve two that gives vent to anger, both ends all are provided with eyebolt about the right side wall of right side cylinder tail.
Preferably, the piston mechanism is formed by connecting a left piston, a left buffer sleeve, a piston rod, a right buffer sleeve and a right piston into a whole, the left buffer sleeve and the cylinder head right buffer sleeve are both sleeved on the piston rod, the left piston and the left buffer sleeve are both positioned in the inner cavity of the left cylinder barrel, the inner cavity of the left cylinder barrel is divided into a first high-pressure natural gas cavity and a first hydraulic oil cavity by a left piston, the first high-pressure natural gas cavity is positioned on the left side of the first hydraulic oil cavity, the right buffer sleeve and the right piston are both positioned in the inner cavity of the right cylinder barrel, the inner cavity of the right cylinder barrel is divided into a second high-pressure natural gas cavity and a second hydraulic oil cavity by the right piston, and the high-pressure natural gas cavity II is positioned on the right side of the hydraulic oil cavity II, and the joints of the left cylinder barrel and the right cylinder barrel and the cylinder head, the space between the left piston and the inner cavity side wall of the left cylinder barrel and the space between the right piston and the inner cavity side wall of the right cylinder barrel are sealed by sealing rings.
Based on the technical characteristics, the high-pressure natural gas cavity I, the hydraulic oil cavity I, the high-pressure natural gas cavity II and the hydraulic oil cavity II are closed containing cavities conveniently.
Preferably, the left end of piston rod is provided with left piston and left cushion collar, and left piston is located the left side of left cushion collar, the right-hand member of piston rod is provided with right cushion collar and right piston, and right cushion collar is located the left side of right piston, left side piston and right piston all with piston rod threaded connection.
Based on the technical characteristics, the left piston, the right piston and the piston rod can be conveniently mounted and dismounted.
Preferably, the first connecting flange, the second connecting flange and the left cylinder barrel are in threaded connection with the third connecting flange, the fourth connecting flange and the right cylinder barrel.
Based on the technical characteristics, the mounting and dismounting between the first connecting flange, the second connecting flange and the left cylinder barrel, and between the third connecting flange, the fourth connecting flange and the right cylinder barrel are convenient.
Preferably, the bottom of the left cylinder tail is provided with a first air outlet, the first air outlet is communicated with the first air outlet one-way valve, the bottom of the right cylinder tail is provided with a second air outlet, and the second air outlet is communicated with the second air outlet one-way valve.
Based on the technical characteristics, the air outlet work is convenient to carry out.
Preferably, the connecting flange II and the connecting flange III are connected with the cylinder head, the left cylinder tail and the connecting flange I are connected with the right cylinder tail and the connecting flange IV through high-strength screws, so that the cylinder head, the connecting flange II and the connecting flange III, the left cylinder tail and the connecting flange I and the right cylinder tail and the connecting flange IV are conveniently integrated, and the use is convenient.
Based on the technical characteristics, the cylinder head, the second connecting flange and the third connecting flange, the left cylinder tail and the first connecting flange and the right cylinder tail and the fourth connecting flange are convenient to form a whole, and the use is convenient.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model has reasonable structural design, on one hand, the built-in displacement sensor replaces a proximity switch to be used as a signaling device, thereby completely eliminating the hidden trouble that the proximity switch is easy to damage, and the signaling position of the displacement sensor can be randomly set, so that the reversing position of the loading cylinder can also be randomly set, and meanwhile, the built-in displacement sensor is used together with a servo valve for controlling the action of the hydraulic cylinder to reverse, thereby forming a closed loop, realizing automatic control and leading the air displacement to be capable of stepless regulation; on the other hand, compared with a mechanical compressor, the utility model has the advantages of simple structure, low noise, good energy-saving effect, low leakage rate, low oil consumption, few easily-damaged parts, simple maintenance, low operation cost, long service life and the like.
Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a use state of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-left cylinder tail, 2-connecting flange I, 3-left cylinder barrel, 4-left piston, 5-left buffer sleeve, 6-piston rod, 7-connecting flange II, 8-cylinder head, 9-connecting flange III, 10-right buffer sleeve, 11-right piston, 12-right cylinder barrel, 13-connecting flange IV, 14-right cylinder tail, 15-displacement sensor, 16-lifting ring screw, 17-air inlet check valve I, 18-air outlet check valve I, 19-air inlet check valve II, 20-air outlet check valve II, 21-air outlet I, 22-air outlet II, 23-oil port A and 24-oil port B.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a technical scheme that: a servo gas-liquid loading hydraulic cylinder comprises a left cylinder tail 1, a connecting flange I2, a left cylinder barrel 3, a left piston 4, a left buffer sleeve 5, a piston rod 6, a connecting flange II 7, a cylinder head 8, a connecting flange III 9, a right buffer sleeve 10, a right piston 11, a right cylinder barrel 12, a connecting flange IV 13, a right cylinder tail 14, a displacement sensor 15, a lifting bolt 16, an air inlet check valve I17, an air outlet check valve I18, an air inlet check valve II 19, an air outlet check valve II 20, an air outlet check valve I21, an air outlet check valve II 22, an oil port A23 and an oil port B24, wherein the left side of the cylinder head 8 is provided with the left cylinder barrel 3, the right side of the cylinder head 8 is provided with the right cylinder barrel 12, an inner cavity of the right cylinder barrel 12 is provided with a piston mechanism, the left end of the piston mechanism extends into the inner cavity of the left cylinder barrel 3, the piston mechanism is formed by integrally connecting the left piston 4, the left buffer sleeve 5, the piston rod 6, the right buffer sleeve 10 and the right piston 11, the left end of a piston rod 6 is provided with a left piston 4 and a left buffer sleeve 5, the left piston 4 is positioned on the left side of the left buffer sleeve 5, the right end of the piston rod 6 is provided with a right buffer sleeve 10 and a right piston 11, the right buffer sleeve 10 is positioned on the left side of the right piston 11, the left piston 4 and the right piston 11 are both in threaded connection with the piston rod 6, so that the left piston 4, the right piston 11 and the piston rod 6 can be conveniently installed and disassembled, the left buffer sleeve 5, a cylinder head 8 and the right buffer sleeve 10 are both sleeved on the piston rod 6, the left piston 4 and the left buffer sleeve 5 are both positioned in the inner cavity of a left cylinder barrel 3, the inner cavity of the left cylinder barrel 3 is separated by the left piston 4 into a high-pressure natural gas cavity I and a hydraulic oil cavity I, the high-pressure natural gas cavity I is positioned on the left side of the hydraulic oil cavity I, the right buffer sleeve 10 and the right piston 11 are both positioned in the inner cavity of a right cylinder barrel 12, the inner cavity of the right cylinder barrel 12 is separated by the right piston 11 into a high-pressure natural gas cavity and a hydraulic oil cavity II, the high-pressure natural gas cavity II is positioned on the right side of the hydraulic oil cavity II, and the joint of the left cylinder barrel 3, the right cylinder barrel 12 and the cylinder head 8, the space between the left piston 4 and the inner cavity side wall of the left cylinder barrel 3 and the space between the right piston 11 and the inner cavity side wall of the right cylinder barrel 12 are sealed through sealing rings, so that the high-pressure natural gas cavity I, the hydraulic oil cavity I, the high-pressure natural gas cavity II and the hydraulic oil cavity II are all closed containing cavities;
the top of the cylinder head 8 is provided with an oil port A23 and an oil port B24, the oil port A23 is positioned on the left side of the oil port B24, the left side of the cylinder head 8 is provided with a second connecting flange 7, and the right side of the cylinder head 8 is provided with a third connecting flange 9;
the left end of the left cylinder barrel 3 is provided with a left cylinder tail 1, the right side of the left cylinder tail 1 is provided with a first connecting flange 2, the left side of the left cylinder tail 1 is provided with a first air inlet one-way valve 17 and a first air outlet one-way valve 18, and the first air inlet one-way valve 17 is positioned above the first air outlet one-way valve 18;
the right end of the right cylinder barrel 12 is provided with a right cylinder tail 14, the left side of the right cylinder tail 14 is provided with a connecting flange four 13, the connecting flange I2, the connecting flange II 7 and the left cylinder barrel 3, the connecting flange III 9 and the connecting flange four 13 are in threaded connection with the right cylinder barrel 12, so that the connecting flange I2, the connecting flange II 7 and the left cylinder barrel 3, the connecting flange III 9, the connecting flange IV 13 and the right cylinder barrel 12 are conveniently mounted and dismounted, the connecting flange II 7, the connecting flange III 9 and the cylinder head 8, the left cylinder tail 1 and the connecting flange I2, the right cylinder tail 14 and the connecting flange IV 13 are conveniently connected through high-strength screws, so that the cylinder head 8, the connecting flange II 7 and the connecting flange III 9, the left cylinder tail 1 and the connecting flange I2, and the right cylinder tail 14 and the connecting flange IV 13 are respectively formed into a whole and are conveniently used, a displacement sensor 15 is arranged in the middle of the right side of the right cylinder tail 14, an air inlet check valve II 19 is arranged on the left side of the displacement sensor 15, an air outlet check valve II 20 is arranged below the air inlet check valve II 19, the air inlet check valve II 19 and the air outlet check valve II 20 are both mounted on the right cylinder tail 14, an air outlet I21 is formed in the bottom of the left cylinder tail 1, the air outlet I21 is communicated with an air outlet check valve I18, an air outlet II 22 is formed in the bottom of the right cylinder tail 14, the air outlet II 22 is communicated with the air outlet check valve II 20, air outlet work is facilitated, and lifting ring screws 16 (see fig. 1 in the attached drawing of the specification) are arranged at the upper end and the lower end of the right side wall of the right cylinder tail 14.
One specific application of this embodiment is: the high-pressure natural gas cavity structure is reasonable in structural design, when oil enters the oil port A23 and oil returns from the oil port B24, the pressure in the first hydraulic oil cavity is increased, the pressure in the second hydraulic oil cavity is low, the high-pressure oil pushes the left piston 4 to move leftwards, the right piston 11 moves along with the piston rod 6, high-pressure gas in the first high-pressure natural gas cavity is compressed and then is discharged from the first gas outlet 21 through the first gas outlet check valve 18 (at the moment, the first gas inlet check valve 17 is closed), and as the content cavity of the second high-pressure natural gas cavity is enlarged, the second gas inlet check valve 19 is opened, and low-pressure natural gas sucks natural gas into the second high-pressure natural gas cavity through the gas inlet (at the moment, the second gas outlet check valve 20 is closed under the action of the high-pressure natural gas). When the piston moves to the position set by the displacement sensor 15, the signal is sent, and the reversing valve for controlling the movement of the piston is reversed. At the moment, oil is fed from an oil port B24, oil is fed from an oil port A23, the pressure in the hydraulic oil chamber II is increased, the pressure in the hydraulic oil chamber I is reduced, high-pressure oil pushes the right piston 11 to move rightwards, and at the moment, the left piston 4 moves together with the piston rod 6; at the moment, the gas in the high-pressure natural gas cavity II is compressed and then discharged from the gas outlet II 22 through the gas outlet one-way valve II 20 (at the moment, the gas inlet one-way valve II 19 is closed), and as the content cavity of the high-pressure natural gas cavity I is enlarged, the gas inlet one-way valve I17 is opened, and the low-pressure natural gas is sucked into the high-pressure natural gas cavity I through the gas inlet (at the moment, the gas outlet one-way valve I18 is closed under the action of the high-pressure natural gas). When the piston moves to the position set by the right displacement sensor 15, the signal is sent, and the reversing valve for controlling the movement of the piston is reversed. At the moment, oil is fed into the oil port A23, oil is returned from the oil port B24, the actions are automatically repeated, so that low-pressure natural gas is continuously sucked, high-pressure natural gas is continuously discharged and enters the gas storage tank for standby, the built-in displacement sensor 15 is used for replacing an approach switch to serve as a signaling device, the hidden danger that the approach switch is easy to damage is completely eliminated, the signaling position of the displacement sensor 15 can be set at will, the reversing position of a loading cylinder can be set at will, meanwhile, the displacement sensor and a servo valve for controlling the action reversing of a hydraulic cylinder are used in a combined mode to form a closed loop, automatic control is achieved, the air displacement can be adjusted in a stepless mode, and the air displacement control system has the advantages of being simple in structure, low in noise, good in energy-saving effect, low in leakage rate, small in oil consumption, few in easily damaged parts, simple to maintain, low in operation cost, long in service life and the like.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (6)
1. A servo gas-liquid loading hydraulic cylinder comprises a cylinder head (8), and is characterized in that: a left cylinder barrel (3) is arranged on the left side of the cylinder head (8), a right cylinder barrel (12) is arranged on the right side of the cylinder head (8), a piston mechanism is arranged in an inner cavity of the right cylinder barrel (12), and the left end of the piston mechanism extends into the inner cavity of the left cylinder barrel (3);
an oil port A (23) and an oil port B (24) are formed in the top of the cylinder head (8), the oil port A (23) is located on the left side of the oil port B (24), a second connecting flange (7) is arranged on the left side of the cylinder head (8), and a third connecting flange (9) is arranged on the right side of the cylinder head (8);
a left cylinder tail (1) is arranged at the left end of the left cylinder barrel (3), a first connecting flange (2) is arranged on the right side of the left cylinder tail (1), a first air inlet check valve (17) and a first air outlet check valve (18) are arranged on the left side of the left cylinder tail (1), and the first air inlet check valve (17) is located above the first air outlet check valve (18);
the right-hand member of right side cylinder (12) is provided with right cylinder tail (14), the left side of right side cylinder tail (14) is provided with flange four (13), be provided with displacement sensor (15) in the middle of the right side of right side cylinder tail (14), the left side of displacement sensor (15) is provided with air inlet check valve two (19), the below of air inlet check valve two (19) is provided with air outlet check valve two (20), and air inlet check valve two (19) and air outlet check valve two (20) all install on right cylinder tail (14), both ends all are provided with eyebolt (16) about the right side wall of right side cylinder tail (14).
2. A servo gas-liquid loading cylinder according to claim 1, characterized in that: the piston mechanism is formed by connecting a left piston (4), a left buffer sleeve (5), a piston rod (6), a right buffer sleeve (10) and a right piston (11) into a whole, wherein the left piston (4) and the left buffer sleeve (5) are both positioned in an inner cavity of a left cylinder barrel (3), the inner cavity of the left cylinder barrel (3) is separated by the left piston (4) into a high-pressure natural gas cavity I and a hydraulic oil cavity I, the high-pressure natural gas cavity I is positioned on the left side of the hydraulic oil cavity I, the right buffer sleeve (10) and the right piston (11) are both positioned in an inner cavity of a right cylinder barrel (12), the inner cavity of the right cylinder barrel (12) is separated by the right piston (11) into a high-pressure natural gas cavity II and a hydraulic oil cavity II, the high-pressure natural gas cavity II is positioned on the right side of the hydraulic oil cavity II, the joint of the left cylinder barrel (3) and the right cylinder barrel (12) and a cylinder head (8), the joint of the left piston (4) and the left cylinder barrel (3) and the inner cavity side wall of the right piston (11) and the right cylinder barrel (12) and the inner cavity side wall of the left cylinder barrel (12) are connected together The two parts are sealed by sealing rings.
3. A servo gas-liquid loading cylinder according to claim 2, characterized in that: the left end of piston rod (6) is provided with left piston (4) and left cushion collar (5), and left piston (4) is located the left side of left cushion collar (5), the right-hand member of piston rod (6) is provided with right cushion collar (10) and right piston (11), and right cushion collar (10) is located the left side of right piston (11), left side cushion collar (5), cylinder head (8) right cushion collar (10) all cup joint on piston rod (6), left side piston (4) and right piston (11) all with piston rod (6) threaded connection.
4. A servo gas-liquid loading cylinder according to claim 1, characterized in that: and the connecting flange I (2), the connecting flange II (7) and the left cylinder barrel (3) and the connecting flange III (9), the connecting flange IV (13) and the right cylinder barrel (12) are in threaded connection.
5. A servo gas-liquid loading cylinder according to claim 1, characterized in that: the bottom of the left cylinder tail (1) is provided with a first air outlet (21), the first air outlet (21) is communicated with a first air outlet one-way valve (18), the bottom of the right cylinder tail (14) is provided with a second air outlet (22), and the second air outlet (22) is communicated with a second air outlet one-way valve (20).
6. A servo gas-liquid loading cylinder according to claim 1, characterized in that: and the connecting flange II (7), the connecting flange III (9) and the cylinder head (8), the left cylinder tail (1) and the connecting flange I (2) and the right cylinder tail (14) and the connecting flange IV (13) are connected through high-strength screws.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021211320742 | 2021-05-25 | ||
| CN202121132074 | 2021-05-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672959U true CN215672959U (en) | 2022-01-28 |
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ID=79974942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121293038.4U Active CN215672959U (en) | 2021-05-25 | 2021-06-10 | Servo gas-liquid loading hydraulic cylinder |
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| Country | Link |
|---|---|
| CN (1) | CN215672959U (en) |
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2021
- 2021-06-10 CN CN202121293038.4U patent/CN215672959U/en active Active
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