CN210565400U - In-line explosion-proof gas transmission pressure cylinder - Google Patents
In-line explosion-proof gas transmission pressure cylinder Download PDFInfo
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- CN210565400U CN210565400U CN201921346394.0U CN201921346394U CN210565400U CN 210565400 U CN210565400 U CN 210565400U CN 201921346394 U CN201921346394 U CN 201921346394U CN 210565400 U CN210565400 U CN 210565400U
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Abstract
The utility model relates to an in-line arrangement explosion-proof defeated gas pressurized cylinder, including the gas compression mechanism, well jar mechanism and the hydraulic drive mechanism that connect gradually, gas compression mechanism includes cylinder, first piston ring, piston rod, second piston ring, low pressure input and high-pressure gas output, and well jar mechanism includes well cylinder, electron level gauge and one-way blowoff valve, well cylinder is connected with the cylinder, and hydraulic drive mechanism includes pneumatic cylinder, hydraulic piston, bumping post, proximity switch and switching-over valve. The utility model discloses explosion-proof performance is strong, have self-cleaning function, maintenance cost low, long service life.
Description
Technical Field
The utility model relates to an equipment technical field of gas delivery and compression especially relates to an in-line arrangement explosion-proof gas transmission pressurized cylinder.
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.
Firstly, 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 requirement on installation site, high maintenance difficulty, high vibration and noise during operation, low efficiency, low reliability and high pollution;
secondly, the other part of equipment adopts a hydraulic system, namely a multi-stage natural gas compression oil cylinder is used, compared with the traditional mechanical compressor, although the structure is simplified, the maintenance is convenient, and the noise is reduced, because the working condition of the compressed natural gas equipment is severe, oil drops mixed with high-pressure oil cavities and slightly leaked to the air cavity are easy to ignite due to high heat generated during the compression of the natural gas, so that local explosion is generated, the situation that a sealing ring of the oil cylinder is burnt frequently occurs, the compression equipment is damaged, the use efficiency is reduced by frequent maintenance, and the operation cost is increased;
thirdly, because the sealing member is invalid and can't in time be found, lead to high-pressure fluid to get into the natural gas compression chamber to mix with natural gas, by the pump income install additional vehicle, lead to the vehicle to damage, increased the risk that the high pressure is exploded simultaneously, the security is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the defect of prior art, provide an in-line arrangement explosion-proof defeated gas pressurized cylinder that anti-flaming is strong, have self-cleaning function, maintenance cost are low, long service life.
The utility model discloses a realize through following technical scheme: an in-line explosion-proof 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, a first piston ring, a piston connecting rod, a second piston ring, a low-pressure input end and a high-pressure gas output end, one end of the piston connecting rod is arranged in the cylinder, the first piston ring is sleeved at one end of the piston connecting rod and divides the cylinder into a first high-pressure air cavity and a second high-pressure air cavity, the second piston ring is sleeved in the middle of the piston connecting rod and is positioned at the end part of the cylinder close to the second high-pressure air cavity, a first air outlet one-way valve and a first air inlet one-way valve are connected in the first high-pressure air cavity, a second air outlet one-way valve and a second air inlet one-way valve are connected in the second high-pressure air cavity, the high-pressure gas output end is respectively and correspondingly connected with the second high-pressure gas cavity and the first high-pressure gas cavity in a one-way mode through a second gas outlet one-way valve and a first gas outlet one-way valve in sequence, and the second gas outlet one-way valve is connected with a pressure measuring joint and a one-way pressure regulating 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 connecting rod extends out of the cylinder and passes through the middle cylinder barrel, the middle cylinder barrel is separated from the cylinder by a second piston ring, a low-pressure air cavity is formed in the middle cylinder barrel, the low-pressure air cavity is connected with a second air outlet one-way 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 hydraulic piston, a buffering column, a proximity switch and a reversing valve, the hydraulic cylinder is connected with a middle cylinder barrel, the hydraulic piston is arranged in the hydraulic cylinder and sleeved on a piston connecting rod, the hydraulic piston separates a left hydraulic cylinder into a first high-pressure oil cavity and a second high-pressure oil cavity, the first high-pressure oil cavity and the second high-pressure oil cavity are connected with a hydraulic system through the reversing valve, the buffering column is provided with two groups of parts and fixed at two ends of the piston connecting rod respectively, and the proximity switch is installed at the end part of the hydraulic cylinder.
Furthermore, the air cylinder comprises a left cylinder bottom, a left cylinder barrel and a left cylinder head which are sequentially connected, the first air outlet one-way valve and the first air inlet one-way valve are arranged in the left cylinder bottom, and the second air outlet one-way valve and the second air inlet one-way valve are arranged in the left cylinder head.
Furthermore, a second high-pressure air connector is arranged between the second air outlet one-way valve and the high-pressure air output end, a first high-pressure air connector is arranged between the first air outlet one-way valve and the high-pressure air output end, a first low-pressure air inlet connector is arranged between the first air inlet one-way valve and the low-pressure input end, and a second low-pressure air inlet connector is arranged between the second air inlet one-way valve and the low-pressure input end.
Furthermore, the hydraulic cylinder comprises a right cylinder head, a right cylinder barrel and a right cylinder bottom which are connected in sequence, and the right cylinder head is connected with the left cylinder head through the middle cylinder barrel.
Furthermore, a one-way air seal and a one-way oil seal which are sleeved on the piston connecting rod and arranged from left to right along the piston connecting rod direction are arranged in the right cylinder head.
Furthermore, the right cylinder head is connected with a first high-pressure joint, the first high-pressure oil cavity is connected with a hydraulic system through an oil duct and the first high-pressure joint, the right cylinder bottom is connected with a second high-pressure joint, and the second high-pressure joint is connected with the hydraulic system through the oil duct and the second high-pressure joint in sequence.
Furthermore, the hydraulic piston is provided with a hole seal.
Further, the proximity switch comprises a first proximity switch and a second proximity switch, the first proximity switch is mounted on the head of the right cylinder, and the second proximity switch is mounted on the bottom of the right 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 the waste oil liquid out of the pressure cylinder, and the discharged waste liquid and gas are filtered by the oil-gas filter and then are re-conveyed to the 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, and the efficiency is high;
6. maintenance simple to operate utilizes the bumping post 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: 102. a first piston ring; 103. a piston connecting rod; 104. a second piston ring; 105. a first high pressure air chamber; 106. a second high-pressure air cavity; 107. a first air outlet one-way valve; 108. a first air intake check valve; 109. a second air outlet one-way valve; 110. a second air intake check valve; 111. a pressure measuring joint; 112. a one-way pressure regulating valve; 113. a left cylinder head; 114. a left cylinder barrel; 115. a left cylinder bottom; 116. a second high pressure gas connection; 117. a first high pressure gas connection; 118. a first low pressure outlet fitting; 119. a second low pressure inlet fitting; 201. a middle cylinder barrel; 202. an electronic level gauge; 203. a one-way blowoff valve; 204. a low-pressure air cavity; 302. a hydraulic piston; 303. A buffer column; 305. a diverter valve; 306. a first high pressure oil chamber; 307. a second high pressure oil chamber; 308. a right cylinder bottom; 309. a right cylinder barrel; 310. a right cylinder head; 311. one-way air sealing; 312. one-way oil sealing; 313. A first high pressure connection; 314. a second high pressure connection; 315. sealing the hole; 316. a first proximity switch; 317. a second proximity switch.
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 figure 1, the in-line explosion-proof gas transmission pressure cylinder 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 first piston ring 102, a piston connecting rod 103, a second piston ring 104, a low-pressure input end and a high-pressure gas output end, wherein one end of the piston connecting rod is arranged in the cylinder, the first piston ring is sleeved at one end of the piston connecting rod and divides the cylinder into a first high-pressure gas cavity 105 and a second high-pressure gas cavity 106, the second piston ring 104 is sleeved at the middle part of the piston connecting rod and is positioned at the end part of the cylinder close to the second high-pressure gas cavity 106, a first gas outlet one-way valve 107 and a first gas inlet one-way valve 108 are connected in the first high-pressure gas cavity 105, a second gas outlet one-way valve 109 and a second gas inlet one-way valve 110 are connected in the second high-pressure gas cavity 106 and the first high-pressure gas cavity 105, the high-pressure gas output end is respectively and sequentially connected with the second high-pressure gas cavity 106, the second air outlet one-way valve is connected with a pressure measuring joint 111 and a one-way pressure regulating valve 112, the air cylinder comprises a left cylinder bottom 115, a left cylinder barrel 114 and a left cylinder head 113 which are connected in sequence, the first outlet check valve 107 and the first inlet check valve 108 are arranged in the left cylinder bottom 115, the second outlet check valve 109 and the second inlet check valve 110 are arranged in the left cylinder head 113, a second high-pressure air joint 116 is arranged between the second air outlet one-way valve 109 and the high-pressure air output end, a first high-pressure air joint 117 is arranged between the first air outlet one-way valve 107 and the high-pressure air output end, a first low-pressure inlet joint is arranged between the first inlet check valve 108 and the low-pressure input end, a second low-pressure air inlet joint 119 is arranged between the second air inlet check valve 110 and the low-pressure input end, and it should be noted that the high-pressure air output end is finally connected with a storage device for receiving compressed air.
The middle cylinder mechanism comprises a middle cylinder barrel 201, an electronic liquid level meter 202 and a one-way blow-down valve 203, the middle cylinder barrel 201 is connected with a cylinder, a piston connecting rod extends out of the cylinder and passes through the middle cylinder barrel 201, the middle cylinder barrel 201 is separated from the cylinder by a second piston ring 104, a low-pressure air cavity 204 is formed in the middle cylinder barrel 201, the low-pressure air cavity 204 is connected with a second air outlet one-way valve 109 through a one-way pressure regulating valve 112, the electronic liquid level meter 202 and the one-way blow-down valve 203 are both arranged at the lowest gravitational potential energy position of the middle cylinder barrel 201, the electronic liquid level meter 202 is electrically connected with a hydraulic system, and the outlet end of the one-way blow-.
Hydraulic drive mechanism includes pneumatic cylinder, hydraulic piston 302, bumping post 303, proximity switch and switching-over valve 305, the pneumatic cylinder is connected with well cylinder 201, hydraulic piston 302 sets up in the pneumatic cylinder and cup joints on the piston connecting rod, and hydraulic piston 302 will separate into left pneumatic cylinder and separate into first high-pressure oil pocket 306 and second high-pressure oil pocket 307, and first high-pressure oil pocket 306 and second high-pressure oil pocket 307 all are connected with hydraulic system through switching-over valve 305, bumping post 303 is equipped with two sets ofly and fixes respectively at piston connecting rod both ends, proximity switch installs the tip at the pneumatic cylinder.
The hydraulic cylinder comprises a right cylinder head 310, a right cylinder tube 309 and a right cylinder bottom 308 which are connected in sequence, the right cylinder head 310 is connected with the left cylinder head 113 through the middle cylinder barrel 201, a one-way air seal 311 and a one-way oil seal 312 which are sleeved on the piston connecting rod 103 and are arranged from left to right along the direction of the piston connecting rod 103 are arranged in the right cylinder head 310, the right cylinder head 310 is connected with a first high-pressure joint 313, the first high-pressure oil chamber 306 is connected with a hydraulic system through an oil passage and the first high-pressure joint 313, the right cylinder bottom 308 is connected with a second high-pressure joint 314, the second high-pressure joint 314 is connected with a hydraulic system through an oil passage and the second high-pressure joint 314 in sequence, the hydraulic piston 302 is provided with a hole seal 315, the proximity switches comprise a first proximity switch 316 and a second proximity switch 317, the first proximity switch 316 is mounted to the right head 310 and the second proximity switch 317 is mounted to the right foot 308.
In detail, when the first high-pressure oil chamber 306 is filled with oil, the piston connecting rod 103 is pushed rightward, and at this time:
the first high-pressure oil cavity 306 applies work by high-pressure oil to push the piston connecting rod 103 to move right, the pressure of the second high-pressure air cavity 106 is increased, and pressurized air is sent to the storage device through the second air outlet one-way valve 109 and the second high-pressure air connector 116; meanwhile, the first high-pressure air chamber 105 is in a negative pressure state, and air is pumped into the first high-pressure air chamber 105 from the low-pressure air input end through the first low-pressure air outlet joint 118 and the first air inlet one-way valve 108. In the process, the first outlet check valve 107 is closed to prevent the high-pressure gas from flowing back into the first high-pressure gas cavity 105, and the second inlet check valve 110 is also closed to prevent the pressurized gas from flowing back to the low-pressure gas input end;
when the second high-pressure oil cavity 307 is filled with oil, the piston connecting rod 103 is pushed leftwards, the functions of all the parts are opposite to those of the parts, the second high-pressure oil cavity 307 applies work by high-pressure oil to push the piston connecting rod 103 to move leftwards, the pressure of the first high-pressure air cavity 105 is increased, and pressurized air is sent to storage equipment through the first air outlet one-way valve 107 and the first high-pressure air joint 117; meanwhile, the second high-pressure air chamber 106 is in a negative pressure state, and air is pumped into the second high-pressure air chamber 106 from the low-pressure air input end through the second low-pressure air inlet joint 119 and the second air inlet check valve 110. In this process, the second outlet check valve 109 is closed to prevent the high-pressure gas from flowing back into the second high-pressure gas chamber 106, and the first inlet check valve 108 is also closed to prevent the pressurized gas from flowing back to the low-pressure gas input end, where it should be noted that the low-pressure gas input end is connected to a low-pressure gas source for providing the gas to be compressed.
The pressure measuring joint 111 is arranged behind the second outlet one-way valve 109 and is connected with the high-pressure air output end and the first high-pressure air joint 117 at the rear end of the first outlet one-way valve 107 through pipelines, so that the pressure measured by the pressure measuring joint 111 is the pressure of the pressurized equipment. By adjusting the one-way pressure regulating valve 112, a safe pressure can be set; when the pressure of the charged device or the first high pressure air chamber 105 or the second high pressure air chamber 106 exceeds the set value of the one-way pressure regulating valve 112, the high pressure pushes open the one-way pressure regulating valve 112, and the surplus air is discharged into the low pressure air chamber 204. Because the low-pressure air cavity 204 is directly connected with the low-pressure air source, and the low-pressure air cavity 204 is respectively communicated with the first high-pressure air cavity 105 and the second high-pressure air cavity 106 in a one-way mode, the discharged high-pressure air can be supplemented into the first high-pressure air cavity 105 or the second high-pressure air cavity 106 in a negative pressure state, and the rest air is discharged back to the low-pressure air source, at the moment, the pressure cylinder does not apply work to compress the air, the pressure of the low-pressure air cavity 204 and the inflated equipment is kept stable, and the pressure measuring joint 111 is used for observing and adjusting;
in addition, the first piston ring 102 and the second piston ring 104 always have micro leakage, and when the first high-pressure air chamber 105 is pressurized, the micro leakage of the first piston ring 102 enters the second high-pressure air chamber 106 in a negative pressure state; when the second high pressure air chamber 106 is pressurized, it enters the first high pressure air chamber 105 in a negative pressure state by a slight leakage of the first piston ring 102, and also enters the low pressure air chamber 204 in a low pressure state at all times by the second piston ring 104. Although the use of the first piston ring 102 and the second piston ring 104 can cause a very small amount of leakage and reduce the pressurization efficiency of the equipment to a very small extent, the high temperature resistance of the piston rings greatly prolongs the service life and the maintenance period of the equipment;
when the piston connecting rod 103 moves to the limit position (left end or right end), the buffer column 303 on the piston connecting rod 103 starts a buffer function to prevent high-speed impact, when the first proximity switch 316 or the second proximity switch 317 detects the buffer column 303, a reversing signal is sent to the reversing valve 305 to enable the piston connecting rod 103 to move reversely, and the piston connecting rod 103 performs reciprocating pressurization action under the monitoring of the first proximity switch 316 or the second proximity switch.
The left cylinder bottom 115, the left cylinder barrel 114 and the left cylinder head 113 are sealed by adopting conical surfaces and large tightening torque, and high-temperature-resistant sealing parts such as rubber and the like are not used, so that the leakage caused by damage due to high temperature of gas compression is avoided; joints related to gas, such as a first high-pressure gas joint 117, a second high-pressure gas joint 116, a pressure measuring joint 111, a first low-pressure gas outlet joint 118 and a second low-pressure gas inlet joint 119, are sealed by using taper threads, and do not use high-temperature resistant sealing elements such as rubber and the like, so that the gas is prevented from being damaged and leaking due to high temperature of gas compression;
the one-way drain outlet is arranged at the lowest gravitational potential energy position of the oil cylinder after the oil cylinder is installed, is connected with the oil gas filter and is connected with the low-pressure gas input end. During regular maintenance, the one-way drain valve 203 is pushed open, and the gas in the low-pressure gas chamber 204 blows out the leaked oil collected therein. After the oil liquid is filtered by the mixed oil gas through the oil gas filter, the gas is sent back to the low-pressure gas end, no outward discharge is generated, only the filter needs to be replaced periodically, and the device is safe and reliable;
an electronic liquid level meter 202 is arranged in the low-pressure air chamber 204, and when a certain amount of oil leaked from the oil cylinder at the right part is stored in the low-pressure air chamber 204, a signal is sent to an electric control system to prompt personnel to overhaul and maintain. If the staff does not respond within a period of time or the oil cylinder sealing ring is damaged to cause a large amount of leakage, so that accumulated liquid in the low-pressure air chamber 204 reaches the warning height, the electronic liquid level meter 202 sends a signal to stop the system until the fault is eliminated.
The working principle is as follows: the pressure cylinder is divided into three cylinders and five cavities, two cavities of the left cylinder and two cavities of the right cylinder are separated by a piston, and the middle cylinder is a single cavity. The two pistons of the left and right cylinders are fixed on the same piston connecting rod 103 for linkage. The left cylinder of the pressurizing cylinder is used as a cylinder for pressurizing gas, the right cylinder is driven by a hydraulic system, the low-pressure gas cavity 204 is isolated between the cylinder and the oil cylinder, and the low-pressure gas cavity 204 is communicated with a gas source to be pressurized through a pipeline. The low-pressure gas is pumped in by the pressurizing cylinder through the pipeline, the cylinder is driven by the oil cylinder to pressurize, the pressurized gas is sent to the storage container, and the cylinder is sealed by the piston ring which is made of metal, so that the piston ring is wear-resistant and long in service life, the sealing element cannot be damaged due to high temperature generated by gas compression, sealing failure and leakage cannot be caused, and meanwhile, the piston ring can resist combustion and explosion; 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 204 and the oil cylinder high-pressure oil chamber adopts one-way air seal and one-way oil seal. In the operation process of the equipment, the low-pressure air cavity 204 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 204 separates the high-pressure air chamber from the high-pressure oil chamber, and starts the anti-high-pressure explosion effect. Oil leaked from the oil cylinder and gas leaked from the high-pressure gas cavity are collected in the low-pressure gas cavity 204, 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 204 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 chamber 204, the oil liquid will be collected at the lowest position of the low-pressure air chamber 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 203 is opened, the low-pressure gas (the pressure of which is always higher than the external air pressure of the equipment) in the low-pressure air chamber 204 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 chamber 204 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 cylinder, the leakage starting protection effect is realized, and the reaction time is reserved for emergency shutdown; an electronic liquid level meter 202 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 202 sends an instruction to enable the pressurizing cylinder to stop pressurizing work, and the equipment safety is protected;
two ends of the oil cavity of the oil cylinder are respectively provided with a first proximity switch 316 or a second proximity switch, so that the working efficiency of the system is improved. When the piston connecting rod 103 moves to the limit position, the proximity switch detects a signal and sends a reversing instruction to the reversing valve 305, the reversing valve 305 reverses, and the piston connecting rod 103 moves reversely; when the piston connecting rod 103 reaches the other end limit position, the first proximity switch 316 or the second proximity switch at the other end sends a reversing instruction to the reversing valve 305, so that the piston connecting rod 103 repeats the above actions, and the piston connecting rod 103 reciprocates in the shortest response time;
a pressure measuring joint 111 is arranged on the rear side of a second air outlet one-way valve 109 of the high-pressure air cavity and used for monitoring output pressure and regulating pressure;
the high pressure air chamber is provided with a one-way pressure regulating valve 112, and the output pressure can be set according to requirements. When the inflated device or the high-pressure air chamber reaches the set upper pressure limit, the high-pressure air pushes the one-way air valve open, the high-pressure air is discharged back to the air input end through the low-pressure air chamber 204 and the pipeline, and the safety overload prevention function is started.
In addition, it should be noted that the first piston ring 102 and the second piston ring 104 cannot be replaced by conventionally used sealing rings, and the piston rings are used to replace commonly used sealing rings, which is not obvious to those skilled in the art. 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 (8)
1. The utility model provides an in-line type explosion-proof gas transmission 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 first piston ring, a piston connecting rod, a second piston ring, a low-pressure input end and a high-pressure gas output end, one end of the piston connecting rod is arranged in the cylinder, the first piston ring is sleeved at one end of the piston connecting rod and divides the cylinder into a first high-pressure air cavity and a second high-pressure air cavity, the second piston ring is sleeved in the middle of the piston connecting rod and is positioned at the end part of the cylinder close to the second high-pressure air cavity, a first air outlet one-way valve and a first air inlet one-way valve are connected in the first high-pressure air cavity, a second air outlet one-way valve and a second air inlet one-way valve are connected in the second high-pressure air cavity, the high-pressure gas output end is respectively and correspondingly connected with the second high-pressure gas cavity and the first high-pressure gas cavity in a one-way mode through a second gas outlet one-way valve and a first gas outlet one-way valve in sequence, and the second gas outlet one-way valve is connected with a pressure measuring joint and a one-way pressure regulating 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 connecting rod extends out of the cylinder and passes through the middle cylinder barrel, the middle cylinder barrel is separated from the cylinder by a second piston ring, a low-pressure air cavity is formed in the middle cylinder barrel, the low-pressure air cavity is connected with a second air outlet one-way 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 hydraulic piston, a buffering column, a proximity switch and a reversing valve, the hydraulic cylinder is connected with a middle cylinder barrel, the hydraulic piston is arranged in the hydraulic cylinder and sleeved on a piston connecting rod, the hydraulic piston separates a left hydraulic cylinder into a first high-pressure oil cavity and a second high-pressure oil cavity, the first high-pressure oil cavity and the second high-pressure oil cavity are connected with a hydraulic system through the reversing valve, the buffering column is provided with two groups of parts and fixed at two ends of the piston connecting rod respectively, and the proximity switch is installed at the end part of the hydraulic cylinder.
2. The in-line explosion-proof gas delivery pressure cylinder of claim 1, which is characterized in that: the air cylinder comprises a left cylinder bottom, a left cylinder barrel and a left cylinder head which are sequentially connected, the first air outlet one-way valve and the first air inlet one-way valve are arranged in the left cylinder bottom, and the second air outlet one-way valve and the second air inlet one-way valve are arranged in the left cylinder head.
3. The in-line explosion-proof gas delivery pressure cylinder of claim 2, which is characterized in that: the air conditioner is characterized in that a second high-pressure air connector is arranged between the second air outlet one-way valve and the high-pressure air output end, a first high-pressure air connector is arranged between the first air outlet one-way valve and the high-pressure air output end, a first low-pressure air inlet connector is arranged between the first air inlet one-way valve and the low-pressure input end, and a second low-pressure air inlet connector is arranged between the second air inlet one-way valve and the low-pressure input end.
4. The in-line explosion-proof gas delivery pressure cylinder of claim 2, which is characterized in that: the hydraulic cylinder comprises a right cylinder head, a right cylinder barrel and a right cylinder bottom which are connected in sequence, and the right cylinder head is connected with the left cylinder head through the middle cylinder barrel.
5. The in-line explosion-proof gas delivery pressure cylinder of claim 4, which is characterized in that: and a one-way air seal and a one-way oil seal which are sleeved on the piston connecting rod and arranged from left to right along the direction of the piston connecting rod are arranged in the right cylinder head.
6. The in-line explosion-proof gas delivery pressure cylinder of claim 4, which is characterized in that: the hydraulic cylinder is characterized in that the right cylinder head is connected with a first high-pressure joint, the first high-pressure oil cavity is connected with a hydraulic system through an oil duct and the first high-pressure joint, the right cylinder bottom is connected with a second high-pressure joint, and the second high-pressure joint is connected with the hydraulic system through the oil duct and the second high-pressure joint in sequence.
7. The in-line explosion-proof gas delivery pressure cylinder of claim 2, which is characterized in that: the hydraulic piston is provided with a hole seal.
8. The in-line explosion-proof gas delivery pressure cylinder of claim 2, which is characterized in that: the proximity switch comprises a first proximity switch and a second proximity switch, the first proximity switch is installed on the head of the right cylinder, and the second proximity switch is installed on the bottom of the right cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921346394.0U CN210565400U (en) | 2019-08-19 | 2019-08-19 | In-line explosion-proof gas transmission pressure cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921346394.0U CN210565400U (en) | 2019-08-19 | 2019-08-19 | In-line explosion-proof gas transmission pressure cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210565400U true CN210565400U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921346394.0U Withdrawn - After Issue CN210565400U (en) | 2019-08-19 | 2019-08-19 | In-line explosion-proof gas transmission pressure cylinder |
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| Country | Link |
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| CN (1) | CN210565400U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594207A (en) * | 2019-08-19 | 2019-12-20 | 无锡市汉为液压气动有限公司 | In-line explosion-proof gas transmission pressure cylinder |
| CN114151336A (en) * | 2021-12-17 | 2022-03-08 | 陈忠标 | Air compressor of oxygen generation and oxygen cabin system |
-
2019
- 2019-08-19 CN CN201921346394.0U patent/CN210565400U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594207A (en) * | 2019-08-19 | 2019-12-20 | 无锡市汉为液压气动有限公司 | In-line explosion-proof gas transmission pressure cylinder |
| CN110594207B (en) * | 2019-08-19 | 2024-07-09 | 无锡市汉为液压气动有限公司 | In-line explosion-proof gas transmission booster cylinder |
| CN114151336A (en) * | 2021-12-17 | 2022-03-08 | 陈忠标 | Air compressor of oxygen generation and oxygen cabin system |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200519 Effective date of abandoning: 20240709 |