CN210317989U - Three-cavity type explosion-proof gas transmission pressure cylinder - Google Patents
Three-cavity type explosion-proof gas transmission pressure cylinder Download PDFInfo
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- CN210317989U CN210317989U CN201921437826.9U CN201921437826U CN210317989U CN 210317989 U CN210317989 U CN 210317989U CN 201921437826 U CN201921437826 U CN 201921437826U CN 210317989 U CN210317989 U CN 210317989U
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Abstract
The utility model relates to a three-cavity type anti-detonation gas transmission pressure cylinder, including the gas compression mechanism, well jar mechanism and the hydraulic drive mechanism that connect gradually, gas compression mechanism includes cylinder, piston ring, piston rod assembly, low pressure gas input and high-pressure gas output, the one end setting of piston rod assembly is in the cylinder, the piston ring cup joints the one end and the cylinder formation high-pressure air cavity at piston rod assembly, high-pressure air cavity in-connection has high-pressure one-way air outlet valve and low pressure one-way admission valve, high-pressure gas output passes through high-pressure one-way air outlet valve and high-pressure air cavity one-way connection. The utility model discloses explosion-proof performance is strong, have self-cleaning function, maintenance cost low, long service life, simple structure, compact structure, the internal leakage volume is less.
Description
Technical Field
The utility model relates to an equipment technical field of gas delivery and compression especially relates to a three chamber type prevents gas transmission pressurized cylinder that knocks.
Background
The popularization and the popularization of the new natural gas energy automobile bring huge opportunities for compressing natural gas and related application fields thereof. The compressed natural gas is one of ideal energy sources of new energy automobiles, the related technology and application of the compressed natural gas become mature day by day, and the compressed natural gas shows great market potential under the popularization of new energy buses and new energy taxi.
When natural gas is conveyed and filled, specific compression equipment is required, and at present, a traditional mechanical compressor is common, and has the disadvantages of complex structure, high installation site requirement, high maintenance difficulty, high vibration and noise during operation, low efficiency, low reliability and high pollution; the burning explosion easily occurs when the temperature is overhigh, the internal leakage quantity is larger, and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at prior art's defect, provide a three chamber type anti-detonation gas transmission pressurized cylinder that anti-flaming is strong, have self-cleaning function, maintenance cost low, long service life, compact structure, internal leakage volume are less.
The utility model discloses a realize through following technical scheme: a three-cavity type anti-detonation gas transmission pressure cylinder comprises a gas compression mechanism, a middle cylinder mechanism and a hydraulic drive mechanism which are sequentially connected;
the gas compression mechanism comprises a cylinder, a piston ring, a piston rod assembly, a low-pressure gas input end and a high-pressure gas output end, wherein one end of the piston rod assembly is arranged in the cylinder, the piston ring is sleeved at one end of the piston rod assembly to form a high-pressure gas cavity with the cylinder, a high-pressure one-way gas outlet valve and a low-pressure one-way gas inlet valve are connected in the high-pressure gas cavity, the high-pressure gas output end is connected with the high-pressure gas cavity in a one-way mode through the high-pressure one-way gas outlet valve;
the middle cylinder mechanism comprises a middle cylinder barrel, an electronic liquid level meter and a one-way blow-down valve, the middle cylinder barrel is connected with the cylinder, the piston rod assembly extends out of the cylinder and passes through the middle cylinder barrel, the piston rod assembly and the middle cylinder barrel form a low-pressure air cavity, the low-pressure air cavity is connected with the high-pressure one-way air outlet valve through a one-way pressure regulating valve, the electronic liquid level meter and the one-way blow-down valve are both arranged at the lowest gravitational potential energy position of the middle cylinder barrel and are electrically connected with the hydraulic system, and the outlet end of the one-way blow-down valve is connected;
the hydraulic driving mechanism comprises a hydraulic cylinder, a buffer sleeve, a proximity switch and a reversing valve, the hydraulic cylinder is connected with a middle cylinder barrel, one end of a piston rod assembly, which is close to the hydraulic cylinder, is provided with the buffer sleeve, a high-pressure oil cavity is formed between the piston rod assembly and the hydraulic cylinder, the high-pressure oil cavity is connected with a hydraulic system through the reversing valve, and the proximity switch is installed at the end part of the hydraulic cylinder.
Furthermore, the high-pressure one-way air outlet valve and the low-pressure one-way air inlet valve are both arranged in the cylinder.
Furthermore, a high-pressure air outlet joint is arranged between the high-pressure one-way air outlet valve and the high-pressure air output end, and a low-pressure air inlet joint is arranged between the low-pressure one-way air inlet valve and the low-pressure air input end.
Furthermore, the hydraulic cylinder comprises a hydraulic cylinder head, a hydraulic cylinder barrel and a hydraulic cylinder bottom which are connected in sequence, and the hydraulic cylinder head is connected with the cylinder through the middle cylinder barrel.
Furthermore, a one-way air seal and a one-way oil seal which are sleeved on the piston rod assembly and arranged from left to right along the direction of the piston rod assembly are arranged in the hydraulic cylinder head.
Furthermore, the proximity switch is electrically connected with the reversing valve, and a buffer spring is arranged on one side inside the hydraulic cylinder.
This practical neotype beneficial effect is:
1. the low-pressure air cavity has a certain volume, and a large amount of leakage occurs after the oil cylinder is sealed and damaged, so that a certain volume of oil can be accommodated, the leaked oil is prevented from directly entering the air cylinder, the leakage starting protection effect is realized, and the reaction time is reserved for emergency shutdown; an electronic liquid level meter is arranged in the cavity, when the leaked oil reaches a certain liquid level, a signal is sent to remind a worker to check the equipment and clear accumulated liquid, if the liquid level reaches a set limit liquid level, no external operation is still performed, the electronic liquid level meter sends an instruction to enable the pressurizing cylinder to stop pressurizing work, and the equipment safety is protected;
2. the utility model has the self-cleaning function, can concentrate leaked high-pressure oil in the low-pressure air cavity, and uses the low-pressure air in the self to discharge waste oil liquid out of the pressure cylinder, and the discharged waste liquid and gas are filtered by the oil-gas filter, and then the gas is re-delivered to the low-pressure air input end for repeated use, thereby avoiding the outward discharge of waste gas liquid, being safe and reliable, and not polluting the environment;
3. the utility model is provided with the safety valve which can adjust the output pressure, prevents the gas from being compressed excessively, ensures the safety of the charged energy storage equipment and has high reliability; the piston ring is used for sealing at a high temperature, so that the service life is greatly prolonged, and the maintenance requirement is reduced.
4. The oil cylinder is provided with a position switch, so that the electric control system is accurately and effectively controlled;
5. the structure is simple, the transmission chain is short, the efficiency is high, the structure is more compact, and the internal leakage amount is less;
6. maintenance simple to operate utilizes cushion collar and buffer spring to reduce the action and assaults, makes the utility model discloses the noise is little.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 11. a cylinder; 12. a piston ring; 13. a piston rod assembly; 14. a low pressure gas input; 15. a high pressure gas output end; 16. a high-pressure air cavity; 17. a high-pressure one-way gas outlet valve; 18. a low pressure one way inlet valve; 19. A pressure measuring joint; 20. a one-way pressure regulating valve; 21. a middle cylinder barrel; 22. an electronic level gauge; 23. a one-way blowoff valve; 24. a low-pressure air cavity; 31. a hydraulic cylinder; 32. a buffer sleeve; 33. a proximity switch; 34. a diverter valve; 35. A high pressure oil chamber; 41. a high-pressure air outlet joint; 42. a low pressure inlet fitting; 310. a hydraulic cylinder head; 311. a hydraulic cylinder; 312. a hydraulic cylinder bottom; 51. one-way air sealing; 52. one-way oil sealing; 313. a buffer spring.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc. refer to directions of the attached drawings only. Accordingly, the directional terms used are used for describing and understanding the present invention, and are not used for limiting the present invention.
As shown in fig. 1, a three-cavity type anti-detonation gas transmission pressure cylinder comprises a gas compression mechanism, a middle cylinder mechanism and a hydraulic drive mechanism which are connected in sequence;
the gas compression mechanism comprises a cylinder 11, a piston ring 12, a piston rod assembly 13, a low-pressure gas input end 14 and a high-pressure gas output end 15, one end of the piston rod assembly 13 is arranged in the cylinder 11, the piston ring 12 is sleeved at one end of the piston rod assembly 13 and forms a high-pressure gas cavity 16 with the cylinder 11, a high-pressure one-way gas outlet valve 17 and a low-pressure one-way gas inlet valve 18 are connected in the high-pressure gas cavity 16, the high-pressure gas output end 15 is in one-way connection with the high-pressure gas cavity 16 through the high-pressure one-way gas outlet valve 17, and the high-pressure one-.
The middle cylinder mechanism comprises a middle cylinder barrel 21, an electronic liquid level meter 22 and a one-way blow-down valve 23, the middle cylinder barrel 21 is connected with the cylinder 11, the piston rod assembly 13 extends out of the cylinder 11 and passes through the middle cylinder barrel 21, the piston rod assembly 13 and the middle cylinder barrel 21 form a low-pressure air chamber 24, the low-pressure air chamber 24 is connected with the high-pressure one-way air outlet valve 17 through a one-way pressure regulating valve 20, the electronic liquid level meter 22 and the one-way blow-down valve 23 are both arranged at the lowest gravitational potential energy position of the middle cylinder barrel 21, the electronic liquid level meter 22 is electrically connected with a hydraulic system, and the outlet end of the one-way blow-down.
The hydraulic driving mechanism comprises a hydraulic cylinder 31, a buffer sleeve 32, a proximity switch 33 and a reversing valve 34, the hydraulic cylinder 31 is connected with the middle cylinder barrel 21, one end, close to the hydraulic cylinder 31, of the piston rod assembly 13 is sleeved with the buffer sleeve 32, a high-pressure oil cavity 35 is formed between the piston rod assembly 13 and the hydraulic cylinder 31, the high-pressure oil cavity 35 is connected with a hydraulic system through the reversing valve 34, and the proximity switch 33 is installed at the end of the hydraulic cylinder 31.
The high-pressure one-way air outlet valve 17 and the low-pressure one-way air inlet valve 18 are both arranged in the cylinder 11.
A high-pressure air outlet joint 41 is arranged between the high-pressure one-way air outlet valve 17 and the high-pressure air output end 15, and a low-pressure air inlet joint 42 is arranged between the low-pressure one-way air inlet valve 18 and the low-pressure air input end 14.
The hydraulic cylinder 31 comprises a hydraulic cylinder head 310, a hydraulic cylinder barrel 311 and a hydraulic cylinder bottom 312 which are connected in sequence, and the hydraulic cylinder head 310 is connected with the cylinder 11 through the middle cylinder barrel 21.
The hydraulic cylinder head 310 is provided with a one-way air seal 51 and a one-way oil seal 52 which are sleeved on the piston rod assembly 13 and arranged from left to right along the direction of the piston rod assembly 13.
The proximity switch 33 is electrically connected with the reversing valve 34, and a buffer spring 313 is arranged on one side inside the hydraulic cylinder 31.
The working principle is as follows: the pressure cylinder is divided into three cylinders and three cavities, a single cavity is formed between the cylinder 11 and the piston rod assembly 13, the middle cylinder is the single cavity, and the hydraulic cylinder 31 is the single cavity. The cylinder 11 is used as pressurizing gas, the hydraulic cylinder 31 is an oil cylinder driven by a hydraulic system, and the low-pressure gas cavity 24 is isolated between the cylinder and the oil cylinder, and the low-pressure gas cavity 24 is communicated with a gas source to be pressurized through a pipeline. Low-pressure gas is pumped in by the boosting cylinder through the pipeline, the cylinder 11 is driven by the oil cylinder to boost, the boosted gas is sent to the storage container, the piston ring 12 is adopted for sealing the cylinder 11, and the piston ring 12 is made of metal, is wear-resistant and long in service life, can not cause seal failure and leakage due to damage of a sealing piece caused by high temperature generated by gas compression, and can resist explosion and combustion; the temperature rise caused by pressurizing gas during working can cause the piston ring to thermally expand, thereby achieving better sealing effect; the sealing between the middle cylinder low-pressure air chamber 24 and the cylinder high-pressure oil chamber 35 adopts a one-way air seal 51+ a one-way oil seal 52. In the operation process of the equipment, the low-pressure air cavity 24 is communicated with the low-pressure air source, so that the pressure is always kept at a stable low-pressure level, and the working condition can not generate high pressure, instantaneous high heat and local burning explosion, so that the service life of the air seal and the oil seal is greatly prolonged, and the common air seal can be used; since a common air seal is sufficient for air tightness, a common high-pressure oil seal can be adopted for the oil cavity. The design reduces the production cost and the maintenance cost, and simultaneously increases the reliability of the system;
the low-pressure air chamber 24 separates the high-pressure air chamber 16 from the high-pressure oil chamber 35, and starts the high-pressure explosion-proof function. Oil leaked by the oil cylinder and gas leaked by the high-pressure gas cavity 16 are collected in the low-pressure gas cavity 24, but the high pressure and high temperature cannot be generated in the cavity, so that the mixture of the gas and the oil gas cannot be exploded due to the system action;
the low pressure air chamber 24 is provided with a one-way discharge port which is positioned at the lowest gravitational potential energy position of the low pressure chamber after the installation of the utility model, thereby playing the role of self-cleaning. After the oil liquid of the oil cylinder leaks into the low-pressure air cavity 24, the oil liquid will be collected at the lowest position of the low-pressure air cavity due to the action of gravity, and because the position of the one-way discharge port is located at the lowest potential energy position, after the one-way blow-off valve 23 is opened, the low-pressure gas (the pressure is always higher than the external air pressure of the equipment) in the low-pressure air cavity 24 will blow off the oil liquid collected at the lowest position. The oil liquid of the blown oil-gas mixture is filtered by the filter, and the filtered gas is sent back to the gas input end again and enters the equipment for reuse, so that the environmental pollution is avoided and the safety is ensured;
the low-pressure air cavity 24 has a certain volume, and a large amount of leakage occurs after the oil cylinder is sealed and damaged, so that a certain volume of oil can be accommodated, the leaked oil is prevented from directly entering the air cylinder, the leakage starting protection effect is realized, and the reaction time is reserved for emergency shutdown; an electronic liquid level meter 22 is arranged in the cavity, when the leaked oil reaches a certain liquid level, a signal is sent to remind a worker to check the equipment and clear accumulated liquid, if the liquid level reaches a set limit liquid level, no external operation is still performed, the electronic liquid level meter 22 sends an instruction to enable the pressurizing cylinder to stop pressurizing work, and the equipment is protected to be safe;
one end of the oil cavity of the oil cylinder is provided with a proximity switch 33, so that the working efficiency of the system is improved. When the piston rod assembly 13 moves to the limit position, the proximity switch 33 detects a signal and sends a reversing instruction to the reversing valve 34, the reversing valve 34 reverses, and the piston rod assembly 13 moves reversely;
a pressure measuring joint 19 is arranged at the rear side of a high-pressure one-way air outlet valve 17 of the high-pressure air cavity 16 and plays a role in monitoring output pressure and regulating pressure;
the high-pressure air chamber 16 is provided with a one-way pressure regulating valve 20, and the output pressure can be set according to requirements. When the inflated device or the high-pressure air chamber 16 reaches the set upper pressure limit, the high-pressure air pushes the high-pressure one-way air outlet valve 17 open, the high-pressure air is discharged back to the air input end through the low-pressure air chamber 24 and the pipeline, and the safety overload prevention function is started.
In addition, it should be noted that the piston ring 12 cannot be replaced by a conventionally used sealing ring, and it is not obvious to those skilled in the art that the piston ring 12 is used to replace a commonly used sealing ring, and a conventional pressurized oil cylinder is composed of a high-pressure oil chamber and a high-pressure air chamber, and the high-pressure oil chamber and the high-pressure air chamber are sealed by the sealing ring. The sealing ring is made of elastic materials, generally made of rubber materials, and the sealing performance of the materials is good, but the high-temperature resistance performance is poor, and the sealing ring is easy to burn out to cause sealing failure. Because the sealing performance of the piston ring is not good as that of the sealing ring, the leakage is larger under higher pressure, if the sealing ring is changed into the piston ring, oil liquid and gas are easy to leak mutually, and the high-pressure air cavity is mixed with oil mist and is injected into energy storage equipment to influence the equipment; and the gas that permeates the oil pocket can be brought back to the oil tank by fluid, and the oil tank gas tightness is poor, and gas will volatilize to the air from the oil tank in, if gas is poisonous, flammable gas such as natural gas, easily takes place personnel's poisoning or explosion accident, if under traditional structure, add the piston ring before the sealing washer promptly, and do not have low pressure air cavity, then oil gas that the seepage was between piston ring and the sealing member still is in high pressure state, high heat that produces in the twinkling of an eye at gas compression still can damage the sealing washer, finally leads to leaking.
Compared with the prior art, the utility model discloses explosion-proof can the reinforce, have self-cleaning function, maintenance cost low, long service life.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (6)
1. The utility model provides a three-chamber formula deflagration prevention defeated gas pressurized cylinder which characterized in that: comprises a gas compression mechanism, a middle cylinder mechanism and a hydraulic driving mechanism which are connected in sequence;
the gas compression mechanism comprises a cylinder, a piston ring, a piston rod assembly, a low-pressure gas input end and a high-pressure gas output end, wherein one end of the piston rod assembly is arranged in the cylinder, the piston ring is sleeved at one end of the piston rod assembly to form a high-pressure gas cavity with the cylinder, a high-pressure one-way gas outlet valve and a low-pressure one-way gas inlet valve are connected in the high-pressure gas cavity, the high-pressure gas output end is connected with the high-pressure gas cavity in a one-way mode through the high-pressure one-way gas outlet valve;
the middle cylinder mechanism comprises a middle cylinder barrel, an electronic liquid level meter and a one-way blow-down valve, the middle cylinder barrel is connected with the cylinder, the piston rod assembly extends out of the cylinder and passes through the middle cylinder barrel, the piston rod assembly and the middle cylinder barrel form a low-pressure air cavity, the low-pressure air cavity is connected with the high-pressure one-way air outlet valve through a one-way pressure regulating valve, the electronic liquid level meter and the one-way blow-down valve are both arranged at the lowest gravitational potential energy position of the middle cylinder barrel and are electrically connected with the hydraulic system, and the outlet end of the one-way blow-down valve is connected;
the hydraulic driving mechanism comprises a hydraulic cylinder, a buffer sleeve, a proximity switch and a reversing valve, the hydraulic cylinder is connected with a middle cylinder barrel, one end of a piston rod assembly, which is close to the hydraulic cylinder, is provided with the buffer sleeve, a high-pressure oil cavity is formed between the piston rod assembly and the hydraulic cylinder, the high-pressure oil cavity is connected with a hydraulic system through the reversing valve, and the proximity switch is installed at the end part of the hydraulic cylinder.
2. The three-cavity anti-detonation gas delivery pressure cylinder of claim 1, wherein: the high-pressure one-way air outlet valve and the low-pressure one-way air inlet valve are both arranged in the air cylinder.
3. The three-cavity anti-detonation gas delivery pressure cylinder of claim 1, wherein: and a high-pressure air outlet joint is arranged between the high-pressure one-way air outlet valve and the high-pressure air output end, and a low-pressure air inlet joint is arranged between the low-pressure one-way air inlet valve and the low-pressure air input end.
4. The three-cavity anti-detonation gas delivery pressure cylinder of claim 1, wherein: the hydraulic cylinder comprises a hydraulic cylinder head, a hydraulic cylinder barrel and a hydraulic cylinder bottom which are connected in sequence, and the hydraulic cylinder head is connected with the cylinder through the middle cylinder barrel.
5. The three-cavity anti-detonation gas delivery pressure cylinder of claim 4, wherein: and a one-way air seal and a one-way oil seal which are sleeved on the piston rod assembly and arranged from left to right along the direction of the piston rod assembly are arranged in the hydraulic cylinder head.
6. The three-cavity anti-detonation gas delivery pressure cylinder of claim 1, wherein: the proximity switch is electrically connected with the reversing valve, and a buffer spring is arranged on one side inside the hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437826.9U CN210317989U (en) | 2019-08-30 | 2019-08-30 | Three-cavity type explosion-proof gas transmission pressure cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437826.9U CN210317989U (en) | 2019-08-30 | 2019-08-30 | Three-cavity type explosion-proof gas transmission pressure cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN210317989U true CN210317989U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921437826.9U Active CN210317989U (en) | 2019-08-30 | 2019-08-30 | Three-cavity type explosion-proof gas transmission pressure cylinder |
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| Country | Link |
|---|---|
| CN (1) | CN210317989U (en) |
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2019
- 2019-08-30 CN CN201921437826.9U patent/CN210317989U/en active Active
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