Double-acting liquid-driven circulating liquid seal compressor

Abstract

The utility model relates to a double-acting hydraulic drive circulating liquid seal compressor which comprises a compression unit, a hydraulic station, a circulating liquid pump, a plurality of first pipelines and a plurality of second pipelines. The compression unit comprises a left cylinder body, an oil cylinder body and a right cylinder body which are sequentially and axially connected through connecting bodies from left to right, circulating liquid cavities are formed between the left cylinder body and a left piston, between the right cylinder body and a right piston and between the connecting bodies and a left piston rod or a right piston rod, and the circulating liquid cavities are connected with a circulating liquid pump through first pipelines. The circulating liquid can be continuously introduced to realize liquid sealing among a plurality of parts; the oil cylinder body is connected with the hydraulic station through a second pipeline so that gas in the second left air pressure cavity and the second right air pressure cavity can be compressed by introducing hydraulic oil into the left hydraulic cavity, and gas in the first left air pressure cavity and the first right air pressure cavity can be compressed by introducing hydraulic oil into the right hydraulic cavity. The double-acting liquid-driven circulating liquid seal compressor has the advantages of being stable in work and high in compression efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the compressor field especially relates to a double -acting liquid drive circulation liquid seal compressor. BACKGROUND

[0002] At present, the circulation liquid seal compressor is through the crankshaft structure drive piston in the cylinder reciprocating motion to realize the pressurization to the gas, through setting up annular cavity between the piston and the cylinder to store the circulation liquid, and then reach the purpose such as sealed gas cavity, like the compressor disclosed in patent CN114439728A. The existing compressor, although the crankshaft structure and circulation liquid setting can reach the pressurization purpose within a certain range, but the crankshaft structure is easy to shake when using, leading to its use stability is poor, and then easily causes the piston deformation, piston wear, the sealing between the piston and the cylinder is poor and other problems, reduces its service life. In addition, the existing compressor still has the problems such as low compression efficiency. SUMMARY

[0003] The utility model provides a double -acting liquid drive circulation liquid seal compressor to make up for the deficiency of prior art, with the advantages of stable work, high work efficiency.

[0004] The utility model discloses a double -acting liquid drive circulation liquid seal compressor to make up for the deficiency of prior art, with the advantages of stable work, high work efficiency.

[0005] A double -acting liquid drive circulation liquid seal compressor, comprising a compression unit, a hydraulic station, a circulation liquid pump, a plurality of first pipelines and a plurality of second pipelines;

[0006] The compression unit comprises left cylinder, oil cylinder and right cylinder connected axially in sequence from left to right through connecting body, and left piston, oil piston and right piston are respectively arranged in the left cylinder, oil cylinder and right cylinder, first left gas pressure cavity and second left gas pressure cavity are respectively formed on the left and right sides of the left piston, first right gas pressure cavity and second right gas pressure cavity are respectively formed on the left and right sides of the right piston, and gas inlet and gas outlet are respectively arranged on the left cylinder or right cylinder corresponding to the first left gas pressure cavity, second left gas pressure cavity, first right gas pressure cavity and second right gas pressure cavity, left hydraulic chamber and right hydraulic chamber are respectively formed on the left and right sides of the oil piston, left hydraulic oil port in communication with the left hydraulic chamber and right hydraulic oil port in communication with the right hydraulic chamber are arranged on the oil cylinder, the left side of the oil piston is connected with the left piston through the left piston rod, the right side of the oil piston is connected with the right piston through the right piston rod, a circulation liquid cavity is respectively arranged between the left piston and the left cylinder, between the right piston and the right cylinder, between the left piston rod and the corresponding connecting body and between the right piston rod and the corresponding connecting body, and circulation liquid inlet and circulation liquid outlet in communication with the corresponding circulation liquid cavity are respectively arranged on the left cylinder, right cylinder and connecting body;

[0007] The circulating liquid inlet and the circulating liquid outlet are connected with the circulating liquid pump through the first pipeline respectively, so that the circulating liquid is continuously introduced into the circulating liquid cavity to realize liquid sealing.

[0008] Further, the first left sealing guide is arranged between the left piston and the left cylinder on both sides of the circulating liquid cavity, the first right sealing guide is arranged between the right piston and the right cylinder on both sides of the circulating liquid cavity, the second left sealing guide is arranged between the left piston rod and the corresponding connecting body on both sides of the corresponding circulating liquid cavity, and the second right sealing guide is arranged between the right piston rod and the corresponding connecting body on both sides of the corresponding circulating liquid cavity.

[0009] Further, the air inlet valve is arranged at the air inlet, and the air outlet valve is arranged at the air outlet.

[0010] Further, the left cylinder is connected with the left cover at one end away from the connecting body, the left cover is provided with the air inlet and the air outlet which are communicated with the first left gas pressure cavity, the right cylinder is connected with the right cover at one end away from the connecting body, and the right cover is provided with the air inlet and the air outlet which are communicated with the first right gas pressure cavity.

[0011] Further, the left cylinder and the right cylinder are further respectively provided with a cylinder sleeve, and the left piston and the right piston are arranged in the corresponding cylinder sleeve.

[0012] The double-acting liquid drive circulating liquid sealing compressor has the advantages that the oil cylinder body is arranged between the left cylinder and the right cylinder, and the oil is injected into the oil cylinder body by the hydraulic station, so that the gas compression process is stably completed, the piston is not easy to deform and wear, and the service life of the compression unit is improved; and on the other hand, the left cylinder and the right cylinder space can be fully utilized to realize efficient compression.

[0013] The circulating liquid is injected into the circulating liquid cavity by the circulating liquid pump, and the sealing guide and other structures are matched, so that the sealing property of the multiple gas pressure cavities can be guaranteed, the compression can be smoothly realized, the compressed gas is not easy to be polluted, the circulating liquid can be used to cool the piston and other structures, and the service life of the compression unit is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a part of the sectional structure schematic view of one embodiment of the utility model.

[0015] In the figure, 1, hydraulic station, 2, circulating liquid pump, 3, first pipeline, 4, second pipeline, 5, connecting body, 6, left cylinder body, 7, oil cylinder body, 8, right cylinder body, 9, left piston, 10, oil piston, 11, right piston, 12, first left pneumatic chamber, 13, second left pneumatic chamber, 14, first right pneumatic chamber, 15, second right pneumatic chamber, 16, left hydraulic chamber, 17 right hydraulic chamber, 18, left piston rod, 19, right piston rod, 20, circulating liquid chamber, 21, first left sealing guide, 22, first right sealing guide, 23, second left sealing guide, 24, second right sealing guide, 25, cylinder sleeve. DETAILED DESCRIPTION

[0016] To clearly illustrate the technical features of the present application, the present application will be described in detail below with specific embodiments and in conjunction with the accompanying drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0017] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0018] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated.

[0019] As Figure 1As shown, in this embodiment, the double-acting liquid drive cycle liquid seal compressor comprises a compression unit, a hydraulic station 1, a circulating liquid pump 2, a plurality of first pipelines 3 and a plurality of second pipelines 4; the compression unit comprises a left cylinder body 6, an oil cylinder body 7 and a right cylinder body 8 connected in sequence from left to right through a connecting body 5, and the left cylinder body 6, the oil cylinder body 7 and the right cylinder body 8 are respectively provided with a left piston 9, an oil piston 10 and a right piston 11; the left and right sides of the left piston 9 are respectively formed with a first left gas pressure cavity 12 and a second left gas pressure cavity 13, and the left and right sides of the right piston 11 are respectively formed with a first right gas pressure cavity 14 and a second right gas pressure cavity 15; the first left gas pressure cavity 12, the second left gas pressure cavity 13, the first right gas pressure cavity 14 and the second right gas pressure cavity 15 are respectively provided with an air inlet and an air outlet on the corresponding left cylinder body 6 or right cylinder body 8; the left and right sides of the oil piston 10 are respectively formed with a left hydraulic cavity 16 and a right hydraulic cavity 17; the oil cylinder body 7 is provided with a left hydraulic oil port communicating with the left hydraulic cavity 16 and a right hydraulic oil port communicating with the right hydraulic cavity 17; the left side of the oil piston 10 is connected with the left piston 9 through a left piston rod 18, and the right side of the oil piston 10 is connected with the right piston 11 through a right piston rod 19; a circulating liquid cavity 20 is respectively arranged between the left piston 9 and the left cylinder body 6, between the right piston 11 and the right cylinder body 8, between the left piston rod 18 and the corresponding connecting body 5, and between the right piston rod 19 and the corresponding connecting body 5; the left cylinder body 6, the right cylinder body 8 and the connecting body 5 are respectively provided with a circulating liquid inlet and a circulating liquid outlet communicating with the corresponding circulating liquid cavity; the circulating liquid inlet and the circulating liquid outlet are connected with the circulating liquid pump 2 through the first pipeline 3, so that the circulating liquid can be continuously introduced into the circulating liquid cavity 20 to realize liquid sealing; the left hydraulic oil port and the right hydraulic oil port are connected with the hydraulic station 1 through the second pipeline 4, so that the hydraulic oil can be introduced into the left hydraulic cavity 16 to compress the gas in the second left gas pressure cavity 13 and the second right gas pressure cavity 15, and the hydraulic oil can be introduced into the right hydraulic cavity 17 to compress the gas in the first left gas pressure cavity 12 and the first right gas pressure cavity 14.

[0020] Further, the left piston 9 and the left cylinder body 6 are respectively provided with a first left sealing guide 21 on both sides of the circulating liquid cavity thereon, the right piston 8 and the right cylinder body 8 are respectively provided with a first right sealing guide 22 on both sides of the circulating liquid cavity thereon, the left piston rod 18 and the corresponding connecting body 5 are respectively provided with a second left sealing guide 23 on both sides of the corresponding circulating liquid cavity, the right piston rod 19 and the corresponding connecting body 5 are respectively provided with a second right sealing guide 24 on both sides of the corresponding circulating liquid cavity, and an intermediate sealing guide is arranged between the oil piston and the oil cylinder body. As for the above sealing guides, the following structures can be used, but are not limited thereto: specifically including a guide ring arranged on the first piston, and sealing rings arranged on both sides of the guide ring.

[0021] Further, the left cylinder is connected with a left cover at one end away from the connecting body, the left cover is provided with an air inlet and an air outlet communicated with the first left air pressure cavity, the right cylinder is connected with a right cover at one end away from the connecting body, the right cover is provided with an air inlet and an air outlet communicated with the first right air pressure cavity, the air inlet is provided with an air inlet valve, and the air outlet is provided with an air outlet valve.

[0022] Further, in order to be wear-resistant, a cylinder sleeve 25 is arranged in the left cylinder and the right cylinder respectively, and the left piston 9 and the right piston 11 are arranged in the corresponding cylinder sleeve 25 respectively.

[0023] During operation, first, circulating liquid is introduced into the plurality of circulating liquid cavities 20 through a circulating liquid pump, so that the left piston 9 and the right piston 11 are sealed and cooled with the left cylinder 6 and the right cylinder 5, and the left piston rod and the right piston rod are sealed and cooled with the connecting body; each circulating liquid cavity can be provided with one circulating liquid pump or share one circulating liquid pump; then hydraulic oil is introduced into the left hydraulic cavity 16 through the hydraulic station 1, so as to drive the left piston 9 and the right piston 11 to move rightwards; at this time, air is introduced into the first left air pressure cavity 12 and the first right air pressure cavity 14, and the process of air introduction is stopped; then hydraulic oil is introduced into the right hydraulic cavity 17 through the hydraulic station 1, so that the hydraulic oil in the left hydraulic cavity 16 returns to the hydraulic station when the oil piston 10 moves leftwards, and the left piston 9 and the right piston 11 move leftwards; during the process, the gas in the first left air pressure cavity 12 and the first right air pressure cavity 14 is compressed to a certain pressure and then discharged from the corresponding air outlet valve, and the second left air pressure cavity 13 and the second right air pressure cavity 15 complete an air introduction process; then the above process is repeated to alternately complete the gas compression process in the left cylinder and the right cylinder. During the operation of the compressor, the reciprocating movement is stable, and the space of the left cylinder and the right cylinder can be fully utilized for gas compression, so that the compression efficiency is high. As to the left hydraulic cavity and the right hydraulic cavity, one hydraulic oil port can be arranged for hydraulic oil inlet and outlet, or two hydraulic oil ports can be arranged for hydraulic oil inlet and outlet.

[0024] The specific embodiments described above cannot be used as a limitation on the protection scope of the utility model, and any alternative improvement or change made by the person skilled in the art to the utility model embodiments falls within the protection scope of the utility model.

[0025] The parts not described in the utility model are the common technology of the person skilled in the art.

Claims

1. A double-acting liquid-driven circulating liquid-sealed compressor, characterized in that, It includes a compression unit, a hydraulic station, a circulating fluid pump, several first pipelines, and several second pipelines; The compression unit includes a left cylinder body, a hydraulic cylinder body, and a right cylinder body axially connected from left to right via a connecting body. A left piston, a hydraulic piston, and a right piston are respectively housed within the left cylinder body, hydraulic cylinder body, and right cylinder body. A first left air pressure chamber and a second left air pressure chamber are formed on the left and right sides of the left piston, respectively. A first right air pressure chamber and a second right air pressure chamber are formed on the left and right sides of the right piston, respectively. An air inlet and an air outlet are respectively provided on the left or right cylinder body corresponding to the first left air pressure chamber, the second left air pressure chamber, the first right air pressure chamber, and the second right air pressure chamber. A left hydraulic chamber and a right hydraulic chamber are formed on both sides of the hydraulic piston. The right hydraulic chamber has a left hydraulic port communicating with the left hydraulic chamber and a right hydraulic port communicating with the right hydraulic chamber. The left side of the oil piston is connected to the left piston via the left piston rod, and the right side of the oil piston is connected to the right piston via the right piston rod. A circulating fluid chamber is provided between the left piston and the left cylinder, between the right piston and the right cylinder, between the left piston rod and its corresponding connecting body, and between the right piston rod and its corresponding connecting body. The left cylinder, the right cylinder, and the connecting body are respectively provided with a circulating fluid inlet and a circulating fluid outlet communicating with the corresponding circulating fluid chamber. The circulating fluid inlet and outlet are connected to the circulating fluid pump via the first pipeline to continuously supply circulating fluid into the circulating fluid chamber for liquid sealing. The left and right hydraulic oil ports are connected to the hydraulic station via the second pipeline to compress the gas in the second left and second right air pressure chambers by supplying hydraulic oil into the left hydraulic chamber, and to compress the gas in the first left and first right air pressure chambers by supplying hydraulic oil into the right hydraulic chamber.

2. The dual-acting liquid-driven circulating liquid-sealed compressor according to claim 1, characterized in that, The left piston and the left cylinder are respectively provided with a first left sealing guide on both sides of the upper circulating fluid chamber. The right piston and the right cylinder are respectively provided with a first right sealing guide on both sides of the upper circulating fluid chamber. The left piston rod and its corresponding connecting body are respectively provided with a second left sealing guide on both sides of the corresponding circulating fluid chamber. The right piston rod and its corresponding connecting body are respectively provided with a second right sealing guide on both sides of the corresponding circulating fluid chamber.

3. The dual-acting liquid-driven circulating liquid-sealed compressor according to claim 1, characterized in that, An air inlet valve is provided at the air inlet, and an air outlet valve is provided at the air outlet.

4. The dual-acting liquid-driven circulating liquid-sealed compressor according to claim 1 or 3, characterized in that, The left cylinder body is connected to a left cover at the end away from the connector, and the left cover is provided with an air inlet and an air outlet communicating with the first left air pressure chamber. The right cylinder body is connected to a right cover at the end away from the connector, and the right cover is provided with an air inlet and an air outlet communicating with the first right air pressure chamber.

5. The dual-acting liquid-driven circulating liquid-sealed compressor according to claim 1, characterized in that, The left and right cylinder blocks are each provided with a cylinder liner, and the left and right pistons are respectively located in their corresponding cylinder liners.

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