Two-stage air compressor

Abstract

The invention relates to the technical field of air compressors, and provides a two-stage air compressor which comprises a compression main machine, an oil gas barrel, an air cooler and an oil cooler, the compression main machine is connected with an air inlet pipe, the air inlet pipe is provided with an air inlet valve, and the inlet end of the air inlet pipe is connected with an air filter; a delivery pipe is connected between the compression host and the oil-gas barrel, a gas delivery pipe is connected between the oil-gas barrel and the gas cooler, and an oil delivery pipe is connected between the oil-gas barrel and the oil cooler; the inlet end of the gas conveying pipe is higher than the outlet end of the conveying pipe, the inlet end of the oil conveying pipe is lower than the outlet end of the conveying pipe, an oil-gas separator core is installed in the oil-gas barrel, and the outlet end of the oil-gas separator core is communicated with the inlet end of the gas conveying pipe. The two-stage air compressor can improve the oil-gas separation effect.

Description

Technical Field

[0001] The present application relates to the technical field of air compressors, and in particular to a two-stage air compressor. Background Art

[0002] An air compressor is a main body of an air source device. Its function is to convert the mechanical energy of the prime mover (usually an electric motor) into gas pressure energy. It is a device that generates air pressure for compressed air. With the advancement of technology, air compressors are constantly being optimized in terms of efficiency, reliability, energy consumption and environmental performance. For example, the application of permanent magnet variable frequency compressors enables air compressors to more efficiently adapt to different gas demands and achieve energy-saving operation.

[0003] In the prior art, air enters the air intake line through an air filter and enters the compression main unit in the air compressor through the intake valve. The mechanical energy is converted into gas pressure energy through continuous compression of the compression main unit. The compression main unit is filled with lubricating oil, which can play the role of lubrication, cooling and sealing.

[0004] Through the continuous compression of the compression host, a high-temperature and high-pressure oil-gas mixture (hereinafter referred to as mixed gas) is output at this time. After the mixed gas enters the oil and gas barrel, it will automatically separate due to different densities; however, this type of air compressor has poor oil-gas separation effect. On the one hand, it leads to an increase in the oil content in the compressed air, which reduces the quality of the compressed gas. On the other hand, it leads to rapid loss of lubricating oil and increases equipment maintenance costs. Therefore, an air compressor with good oil-gas separation effect is urgently needed to improve the oil-gas separation effect. Summary of the invention

[0005] In order to improve the oil-gas separation effect, the present application provides a two-stage air compressor.

[0006] The two-stage air compressor provided in this application adopts the following technical solution: A two-stage air compressor comprises a compression main unit, an oil and gas barrel, an air cooler and an oil cooler, wherein the compression main unit is connected to an air intake pipe, the air intake pipe is equipped with an air intake valve, and the inlet end of the air intake pipe is connected to an air filter; a delivery pipe is connected between the compression main unit and the oil and gas barrel, an air delivery pipe is connected between the oil and gas barrel and the air cooler, and an oil delivery pipe is connected between the oil and gas barrel and the oil cooler; the inlet end of the air delivery pipe is higher than the outlet end of the delivery pipe, the inlet end of the oil delivery pipe is lower than the outlet end of the delivery pipe, an oil and gas separator core is installed in the oil and gas barrel, and the outlet end of the oil and gas separator core is communicated with the inlet end of the air delivery pipe.

[0007] By adopting the above technical solution, the outside air enters the compression host in the air compressor through the air filter and the intake valve in turn. Through the continuous compression of the compression host, the mixed gas generated at this time flows into the oil and gas barrel through the delivery pipe. After the mixed gas enters the oil and gas barrel, it is automatically separated due to the difference in density. The oil body sinks to the bottom of the oil and gas barrel and flows to the oil cooler through the oil pipeline for cooling. The cooled oil body can be filtered and then sent to the compression host for recycling. The gas automatically floats up and is further separated from the oil and gas through the oil and gas separator core to reduce the oil content in the gas; the obtained gas flows from the gas pipeline to the gas cooler for cooling, thereby obtaining compressed gas. The combination of the oil and gas barrel and the oil and gas separator core forms a double-stage separation effect on the mixed gas, thereby improving the separation effect of oil and gas.

[0008] Optionally, a deceleration baffle is installed on the inner wall of the oil and gas barrel, and the deceleration baffle divides the inside of the oil and gas barrel into a floating area and a sinking area, the inlet end of the gas pipe is connected to the floating area, and the inlet end of the oil pipe is connected to the sinking area; the deceleration baffle is annular around the central axis of the oil and gas barrel and forms a connecting flow channel, and the floating area and the sinking area are connected to each other through the connecting flow channel; a deceleration zone is formed between the outer peripheral wall of the deceleration baffle and the inner peripheral wall of the oil and gas barrel, and the deceleration zone is connected to the sinking zone; the delivery pipe is connected to a plurality of branch pipes, the inlet end of each branch pipe is connected to the outlet end of the delivery pipe, and the outlet end of each branch pipe is connected to the deceleration zone, and the outlet ends of the plurality of branch pipes are arranged at intervals around the central axis of the oil and gas barrel.

[0009] By adopting the above technical solution, the setting of multiple branch pipes divides the mixed gas generated by the compression main engine into multiple streams. After the multiple mixed gases enter the deceleration zone at the same time, they are first blocked by the deceleration baffle to form the "first speed reduction". After each mixed gas hits the deceleration baffle, it moves around the side of the deceleration baffle, so that the multiple mixed gases collide with each other in the deceleration zone, forming the "second speed reduction", which greatly improves the oil and gas separation effect.

[0010] Optionally, a first baffle and a second baffle are respectively provided in the connecting flow channel, and a plurality of the first baffles and the second baffles are arranged at intervals along the central axis of the oil and gas barrel, and the plurality of first baffles and the plurality of second baffles are arranged in an alternating manner; the outer peripheral wall of the first baffle is connected to the inner peripheral wall of the deceleration baffle, and a first opening is formed on the inner peripheral wall of the first baffle, and a second opening is formed between the outer peripheral wall of the second baffle and the inner peripheral wall of the deceleration baffle, and the second baffle is provided with a connecting piece, and the second baffle is installed on the first baffle adjacent to the bottom through the connecting piece.

[0011] By adopting the above technical solution, multiple first baffles and multiple second baffles are arranged in a staggered manner, which prolongs the path of the mixed gas through the connecting flow channel, increases the residence time of the mixed gas in the connecting flow channel, and facilitates oil and gas separation.

[0012] Optionally, the inner peripheral wall of the first baffle has a first folded edge, and a first oil storage groove is formed between the first folded edge and the surface of the first baffle. The outer peripheral wall of the second baffle has a second folded edge, and a second oil storage groove is formed between the second folded edge and the surface of the second baffle.

[0013] By adopting the above technical solution, when the mixed gas passes through the connecting flow channel, a part of the oil can be retained in the first oil storage tank and the second oil storage tank, so that there is a certain temperature difference between the first fold edge, the second fold edge and the mixed gas, which is conducive to oil and gas separation.

[0014] Optionally, the vertical section of the first baffle is gradually inclined downward from the outside to the inside, and a first collision zone is formed between the lower surface of the first baffle and the inner peripheral wall of the deceleration baffle; the vertical section of the second baffle is gradually inclined downward from the inside to the outside, and a second collision zone is formed at the bottom of the second baffle.

[0015] By adopting the above technical solution, when the mixed gas enters the first collision zone or the second collision zone, the flow rate is significantly reduced, which is conducive to oil and gas separation and improves the oil and gas separation effect.

[0016] Optionally, a cooling pipe is installed at the opening of the first collision zone, and the cooling pipe is annular around the central axis of the oil and gas barrel; a third opening is formed between the cooling pipe and the inner wall of the deceleration baffle, and a fourth opening is formed between the cooling pipe and the lower surface of the first baffle.

[0017] By adopting the above technical solution, a heat exchange medium is introduced into the cooling pipe. When the mixed gas enters the first collision zone, the cooling pipe can exchange heat with the mixed gas, absorb the heat of the mixed gas, and improve the separation effect between the gas and the oil body. At the same time, the cooling pipe can reduce the cooling pressure of the subsequent gas cooler; and when the mixed gas enters the first collision zone, it is blocked by the cooling pipe and divided into two streams, one stream enters the first collision zone from the third port, and the other stream enters the first collision zone from the fourth port. The two streams reunite in the first collision zone, further improving the speed reduction effect on the gas.

[0018] Optionally, the cooling pipe is connected to a connecting plate, and a plurality of the connecting plates are arranged at intervals around the central axis of the oil and gas barrel, each of the connecting plates is connected to a deceleration baffle, and the cooling pipe is installed on the deceleration baffle through a plurality of connecting plates; the connecting plate has a supporting surface for supporting the first baffle.

[0019] By adopting the above technical solution, the cooling pipe is installed on the deceleration baffle through multiple connecting plates, so that the cooling pipe is installed at the opening of the first collision zone, and the connecting plate supports the first baffle, thereby improving the structural stability of the first baffle and reducing the possibility of deformation of the first baffle.

[0020] Optionally, the connecting plate extends into the deceleration zone at a side away from the cooling pipe, and the connecting plate is a copper plate.

[0021] By adopting the above technical solution, the connecting plate increases the contact area between the cooling tube and the mixed gas, thereby improving the heat exchange effect.

[0022] Optionally, the deceleration baffle is respectively connected to a water inlet pipe and a water outlet pipe, an adjustment seat is provided at the opening of the first collision zone, and an adjustment channel is provided in the adjustment seat; the cooling pipe includes a first arc portion and a second arc portion, the inlet end of the first arc portion is connected to the water inlet pipe, the outlet end of the first arc portion is connected to the inlet end of the adjustment channel, the inlet end of the second arc portion is connected to the outlet end of the adjustment channel, and the outlet end of the second arc portion is connected to the water outlet pipe; the first baffle is slidably installed on the inner circumferential wall of the deceleration baffle, and the adjustment seat is provided with an adjusting member, and when the first baffle is lifted, the adjusting member gradually expands the flow of the adjustment channel.

[0023] By adopting the above technical solution, when the mixed gas passes through the connecting flow channel, when the driving force of the mixed gas on the first baffle exceeds a certain value (when the gas pressure of the mixed gas reaches a certain value), the mixed gas pushes the first baffle and forces the first baffle to rise. At this time, the flow of the regulating flow channel is expanded through the regulating member to increase the flow of the cooling medium in the cooling pipe and improve the heat exchange efficiency.

[0024] Optionally, a sliding ring is slidably installed on the inner circumferential wall of the deceleration baffle, the outer circumferential wall of the first baffle is connected to the sliding ring, and the first baffle is installed on the inner circumferential wall of the deceleration baffle through the sliding ring; the adjusting member includes an adjusting plate and a return spring, the top wall of the adjusting seat is provided with an adjusting groove connected to the adjusting flow channel, the adjusting plate is slidably installed in the adjusting groove and is fixedly connected to the lower surface of the first baffle, and the plate surface of the adjusting plate is provided with an adjusting hole; the return spring is installed between the sliding ring and the deceleration baffle, and the return spring forces the first baffle to abut against the connecting plate, when the first baffle abuts against the connecting plate, the connecting area between the adjusting hole and the adjusting flow channel is the smallest, and when the first baffle is lifted, the connecting area between the adjusting hole and the adjusting flow channel gradually increases.

[0025] By adopting the above-mentioned technical solution, when the mixed gas forces the first baffle to rise, the first baffle drives the adjustment plate to rise, thereby changing the connection area between the adjustment hole and the adjustment channel, and as the first baffle rises, the connection area between the adjustment hole and the adjustment channel gradually increases, thereby increasing the flow rate of the cooling medium in the cooling pipe, thereby improving the heat exchange efficiency.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the setting of the oil-gas barrel and the oil-gas separator core, the outside air enters the compression main unit of the air compressor through the air filter and the intake valve in turn. Through the continuous compression of the compression main unit, the mixed gas generated at this time flows into the oil-gas barrel through the delivery pipe. After the mixed gas enters the oil-gas barrel, it is automatically separated due to the difference in density. The oil body sinks to the bottom of the oil-gas barrel and flows to the oil cooler through the oil pipeline for cooling. The cooled oil body can be filtered and then sent to the compression main unit for recycling. The gas automatically floats up and is further separated from the oil and gas through the oil-gas separator core to reduce the oil content in the gas; the obtained gas flows from the gas pipeline to the gas cooler for cooling, thereby obtaining compressed gas. The combination of the oil-gas barrel and the oil-gas separator core forms a two-stage separation effect for the mixed gas, improving the oil-gas separation effect; 2. Through the setting of the deceleration baffle and branch pipes, the setting of multiple branch pipes divides the mixed gas generated by the compression main engine into multiple streams. After the multiple mixed gases enter the deceleration zone at the same time, they are first blocked by the deceleration baffle to form the "first speed reduction". After each mixed gas hits the deceleration baffle, it moves around the outer peripheral wall of the deceleration baffle, so that the multiple mixed gases collide with each other in the deceleration zone, forming the "second speed reduction", which greatly improves the oil and gas separation effect; 3. Through the setting of the cooling pipe, the heat exchange medium is introduced into the cooling pipe. When the mixed gas enters the first collision zone, the cooling pipe can exchange heat with the mixed gas, absorb the heat of the mixed gas, and improve the separation effect between the gas and the oil body. At the same time, the cooling pipe can reduce the cooling pressure of the subsequent gas cooler; and when the mixed gas enters the first collision zone, it is blocked by the cooling pipe and divided into two streams, one stream enters the first collision zone from the third port, and the other stream enters the first collision zone from the fourth port. The two streams reunite in the first collision zone, further improving the gas deceleration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of Example 1; Figure 2 is a schematic diagram of the process of Example 1; Figure 3 is a partial cross-sectional view of a deceleration baffle according to Embodiment 2; Figure 4 is a partial cross-sectional view of a plurality of branch pipes embodied in Embodiment 2; Figure 5 yes Figure 3 The enlarged view of point A in the middle; Figure 6 is a partial cross-sectional view of a cooling pipe according to Embodiment 3; Figure 7 is a partial cross-sectional view of the connecting piece of embodiment 3; Figure 8 is a partial cross-sectional view of a sliding ring according to Embodiment 4; Fig. 9 is a partial cross-sectional view of the adjustment seat embodied in Embodiment 4; Fig.10 It is a partial cross-sectional view of the regulating flow channel according to the fourth embodiment.

[0028] Explanation of reference numerals: 1. compressor main engine; 11. air intake pipe; 111. air intake valve; 112. air filter; 12. delivery pipe; 121. branch pipe; 2. oil and gas barrel; 21. air delivery pipe; 22. oil delivery pipe; 23. oil and gas separator core; 24. floating area; 25. sinking area; 3. air cooler; 31. output pipe; 4. oil cooler; 41. return pipe; 5. deceleration baffle; 51. connecting flow channel; 52. deceleration area; 53. first baffle; 531. first opening; 532. first folded edge; 533. first oil storage tank; 534. first collision area; 54. second baffle; 541. second opening; 542 , second folding edge; 543, second oil storage tank; 544, second collision area; 55, water inlet pipe; 56, water outlet pipe; 57, adjustment seat; 571, adjustment flow channel; 572, adjustment groove; 58, sliding ring; 59, fixing ring; 591, sliding rod; 6, connecting piece; 61, connecting rod; 62, connecting nut; 7, cooling pipe; 71, third opening; 72, fourth opening; 73, connecting piece; 731, supporting surface; 732, embedded groove; 74, first arc-shaped portion; 75, second arc-shaped portion; 8, adjusting piece; 81, adjusting plate; 811, adjusting hole; 82, reset spring; 9, frame assembly; 91, permanent magnet motor. DETAILED DESCRIPTION

[0029] The following combination Figure 1-Figure 10 This application is described in further detail. Example 1

[0030] The embodiment of the present application discloses a two-stage air compressor.

[0031] Reference Figure 1 , Figure 2 The two-stage air compressor includes a frame assembly 9, a compression host 1, an oil and gas barrel 2, an air cooler 3 and an oil cooler 4. The compression host 1 is installed on the frame assembly 9, and a permanent magnet motor 91 for driving the compression host 1 to operate is installed on the frame assembly 9; the compression host 1 is connected to an intake pipe 11, an air filter 112 is installed at the inlet end of the intake pipe 11, and the outlet end of the intake pipe 11 is connected to the air inlet of the compression host 1, and the intake pipe 11 is installed with an intake valve 111 for opening and closing the intake pipe 11.

[0032] The oil and gas barrel 2 is installed on one side of the compression main unit 1, and a delivery pipe 12 is connected between the compression main unit 1 and the oil and gas barrel 2. In this embodiment, the inlet end of the delivery pipe 12 is connected to the air outlet of the compression main unit 1, and the outlet end of the delivery pipe 12 is connected to the inside of the oil and gas barrel 2. The compression main unit 1 and the oil and gas barrel 2 are connected to each other through the delivery pipe 12.

[0033] Reference Figure 1 , Figure 2 The air cooler 3 and the oil cooler 4 are both arranged on one side of the oil and gas barrel 2 (the air cooler 3 and the oil cooler 4 are both existing technical structures, and their internal structures are not elaborated too much here). An air pipe 21 is connected between the oil and gas barrel 2 and the air cooler 3. The inlet end of the air pipe 21 is connected to the inside of the oil and gas barrel 2 through the top of the oil and gas barrel 2, and the outlet end of the air pipe 21 is connected to the air inlet of the air cooler 3. The air pipe 21 is installed with a pressure valve, and the air outlet of the air cooler 3 is connected to the output pipe 31, and the output pipe 31 is used to transport compressed air to the outside.

[0034] An oil pipeline 22 is connected between the oil and gas barrel 2 and the oil cooler 4. The inlet end of the oil pipeline 22 is connected to the inside of the oil and gas barrel 2 through the bottom of the oil and gas barrel 2, and the outlet end of the oil pipeline 22 is connected to the oil inlet of the oil cooler 4. The oil outlet of the oil cooler 4 is connected to a return pipe 41, and the outlet end of the return pipe 41 is connected to the oil inlet of the compression main unit 1.

[0035] Reference Figure 1 , Figure 2 In this embodiment, the inlet end of the gas pipe 21 is higher than the outlet end of the delivery pipe 12, and the inlet end of the oil pipe 22 is lower than the outlet end of the delivery pipe 12. An oil-gas separator core 23 is installed in the oil-gas barrel 2 (the oil-gas separator core 23 is a prior art structure, and its internal structure is not elaborated on here). The oil-gas separator core 23 has a glass fiber filter material for separating oil and gas (not shown in the figure), and the outlet end of the oil-gas separator core 23 is connected to the inlet end of the gas pipe 21.

[0036] The implementation principle of the embodiment 1 of the present application is as follows: the outside air enters the compression main unit 1 in the air compressor through the air filter 112 and the intake valve 111 in turn. Through the continuous compression of the compression main unit 1, the mixed gas generated at this time flows into the oil and gas barrel 2 through the delivery pipe 12. After the mixed gas enters the oil and gas barrel 2, it is automatically separated due to the difference in density. The oil body sinks to the bottom of the oil and gas barrel 2 and flows to the oil cooler 4 through the oil delivery pipe 22 for cooling. The cooled oil body can be filtered and then sent to the compression main unit 1 for recycling. The gas automatically floats up and is further separated from the oil and gas through the oil and gas separator core 23 to reduce the oil content in the gas; the obtained gas flows from the gas delivery pipe 21 to the gas cooler 3 for cooling, thereby obtaining compressed gas. The combination of the oil and gas barrel 2 and the oil and gas separator core 23 forms a two-stage separation effect on the mixed gas, thereby improving the separation effect of oil and gas. Example 2

[0037] The embodiment of the present application discloses a two-stage air compressor.

[0038] The two-stage air compressor disclosed in the embodiment of the present application is different from that in embodiment 1 in that: Reference Figure 3 In this embodiment, a deceleration baffle 5 is installed on the inner wall of the oil and gas barrel 2, and the deceleration baffle 5 divides the inside of the oil and gas barrel 2 into a floating area 24 and a sinking area 25. The inlet end of the gas pipe 21 is connected to the floating area 24, and the inlet end of the oil pipe 22 is connected to the sinking area 25; the deceleration baffle 5 is annular around the central axis of the oil and gas barrel 2 and forms a connecting flow channel 51, and the floating area 24 and the sinking area 25 are connected to each other through the connecting flow channel 51; the outer peripheral wall of the deceleration baffle 5 and the inner peripheral wall of the oil and gas barrel 2 are spaced apart to form a deceleration area 52, and the bottom of the deceleration area 52 is open to connect to the sinking area 25.

[0039] Reference Figure 3 , Figure 4 In this embodiment, the delivery pipe 12 is connected to a plurality of branch pipes 121, the inlet end of each branch pipe 121 is connected to the outlet end of the delivery pipe 12, the outlet end of each branch pipe 121 is connected to the deceleration zone 52, and the outlet ends of the plurality of branch pipes 121 are arranged at intervals around the central axis of the oil and gas barrel 2; the delivery pipe 12 and the plurality of branch pipes 121 can be connected through a four-way joint (the delivery pipe 12 and the four-way joint are not reflected in this embodiment).

[0040] Reference Figure 3 , Figure 5 A first baffle 53 and a second baffle 54 are respectively installed in the connecting flow channel 51. Multiple first baffles 53 and second baffles 54 are arranged at intervals along the central axis of the oil and gas barrel 2, and the multiple first baffles 53 and the multiple second baffles 54 are arranged in a staggered manner; in this embodiment, the outer peripheral wall of the first baffle 53 is fixedly connected to the inner peripheral wall of the deceleration baffle 5 by welding, and the inner peripheral wall of the first baffle 53 forms a first opening 531.

[0041] A second opening 541 is formed between the outer peripheral wall of the second baffle 54 and the inner peripheral wall of the deceleration baffle 5. The second baffle 54 is provided with a connecting piece 6, and the second baffle 54 is installed on the first baffle 53 adjacent to the bottom through the connecting piece 6; the connecting piece 6 includes a connecting rod 61 and a connecting nut 62, the connecting rod 61 is vertically arranged, the lower end of the connecting rod 61 is fixedly installed on the top wall of the first baffle 53, and the upper end of the connecting rod 61 passes through the second baffle 54. Two connecting nuts 62 are provided, and the two connecting nuts 62 are both threadedly sleeved on the outer peripheral wall of the connecting rod 61 (the thread is not shown in the figure), and the two connecting nuts 62 are clamped together on the second baffle 54.

[0042] Reference Figure 3, Figure 5 The vertical section of the first baffle 53 is gradually inclined downward from the outside to the inside, and a first collision zone 534 is formed between the lower surface of the first baffle 53 and the inner peripheral wall of the deceleration baffle 5; the vertical section of the second baffle 54 is gradually inclined downward from the inside to the outside, and a second collision zone 544 is formed at the bottom of the second baffle 54; a first folded edge 532 is fixedly installed on the inner peripheral wall of the first baffle 53, and the first folded edge 532 is annular around the central axis of the oil and gas barrel 2, and the first folded edge 532 is fixed to the first baffle 53 by welding, and a first oil storage groove 533 is formed between the first folded edge 532 and the surface of the first baffle 53; a second folded edge 542 is fixedly installed on the outer peripheral wall of the second baffle 54, and the second folded edge 542 is annular around the central axis of the oil and gas barrel 2, and the second folded edge 542 is fixed to the second baffle 54 by welding, and a second oil storage groove 543 is formed between the second folded edge 542 and the surface of the second baffle 54.

[0043] The implementation principle of Example 2 of the present application is as follows: through the setting of the deceleration baffle 5 and multiple branch pipes 121, the setting of multiple branch pipes 121 divides the mixed gas generated by the compression main unit 1 into multiple streams. After the multiple streams of mixed gas enter the deceleration zone 52 at the same time, they are first blocked by the deceleration baffle 5 to form a "first speed reduction". After each stream of mixed gas hits the deceleration baffle 5, it moves circumferentially around the outer peripheral wall of the deceleration baffle 5, so that the multiple streams of mixed gas collide with each other in the deceleration zone 52, forming a "second speed reduction", which greatly improves the oil-gas separation effect.

[0044] The multiple first baffles 53 and the multiple second baffles 54 are arranged in a staggered manner, which prolongs the path of the mixed gas through the connecting flow channel 51, and the setting of the first collision zone 534 and the second collision zone 544 greatly increases the residence time of the mixed gas in the connecting flow channel 51, which helps to separate oil and gas and improve the purity of the compressed gas. Example 3

[0045] The embodiment of the present application discloses a two-stage air compressor.

[0046] The two-stage air compressor disclosed in the embodiment of the present application is different from that in embodiment 2 in that: Reference Figure 6 , Figure 7In this embodiment, a water inlet pipe 55 and a water outlet pipe 56 are respectively installed on the outer side of the deceleration baffle 5, and a cooling pipe 7 is installed at the opening of the first collision zone 534. The cooling pipe 7 is annular around the central axis of the oil and gas barrel 2. The inlet end of the cooling pipe 7 passes through the deceleration baffle 5 and is connected to the water inlet pipe 55. The outlet end of the cooling pipe 7 passes through the deceleration baffle 5 and is connected to the water outlet pipe 56. The water inlet pipe 55 is used to input cooling water into the cooling pipe 7, and the water outlet pipe 56 is used to discharge the cooling water of the cooling pipe 7. A third opening 71 is formed between the cooling pipe 7 and the inner peripheral wall of the deceleration baffle 5, and a fourth opening 72 is formed between the cooling pipe 7 and the lower surface of the first baffle 53.

[0047] Reference Figure 6 , Figure 7 The cooling pipe 7 is connected with a connecting piece 73, which is a copper sheet. The bottom wall of the connecting piece 73 is provided with an embedding groove 732, and the cooling pipe 7 is embedded in the embedding groove 732 and is welded and fixed with the connecting piece 73; in this embodiment, a plurality of connecting pieces 73 are arranged at intervals around the central axis of the oil and gas barrel 2, and a plurality of penetration grooves are provided on the inner peripheral wall of the deceleration baffle 5. The plurality of penetration grooves are arranged corresponding to the plurality of connecting pieces 73, and the side of each connecting piece 73 away from the cooling pipe 7 is penetrated by the corresponding penetration groove and extends into the deceleration zone 52, and each connecting piece 73 is welded and fixed to the deceleration baffle 5, and the cooling pipe 7 is installed on the deceleration baffle 5 through a plurality of connecting pieces 73; each connecting piece 73 has a supporting surface 731, and the supporting surface 731 is used to support the lower surface of the first baffle 53.

[0048] The implementation principle of Example 3 of the present application is as follows: a heat exchange medium is introduced into the cooling pipe 7, and when the mixed gas enters the first collision zone 534, the cooling pipe 7 can exchange heat with the mixed gas, absorb the heat of the mixed gas, and improve the separation effect between the gas and the oil body. At the same time, the cooling pipe 7 can reduce the cooling pressure of the subsequent gas cooler 3; and, when the mixed gas enters the first collision zone 534, it is blocked by the cooling pipe 7 and divided into two streams, one stream enters the first collision zone 534 from the third port 71, and the other stream enters the first collision zone 534 from the fourth port 72, and the two streams reunite in the first collision zone 534, further improving the gas deceleration effect. Example 4

[0049] The embodiment of the present application discloses a two-stage air compressor.

[0050] The two-stage air compressor disclosed in the embodiment of the present application is different from that in embodiment 3 in that: Reference Figure 8In this embodiment, two fixed rings 59 are fixedly installed on the inner wall of the deceleration baffle 5. The two fixed rings 59 are arranged at intervals along the central axis of the oil and gas barrel 2. A sliding ring 58 is installed between the two fixed rings 59. A sliding rod 591 is fixedly installed between the two fixed rings 59. The sliding rod 591 passes through the sliding ring 58. The sliding ring 58 is slidably installed between the two fixed rings 59 through the sliding rod 591. The outer wall of the first baffle 53 is fixedly connected to the sliding ring 58 so that it can slide along the central axis of the oil and gas barrel 2.

[0051] Reference Fig. 9 , Fig.10 An adjustment seat 57 is provided at the opening of the first collision zone 534, and the adjustment seat 57 is fixedly installed on the inner wall of the deceleration baffle 5, and an adjustment flow channel 571 is opened in the adjustment seat 57; the cooling pipe 7 includes a first arc portion 74 and a second arc portion 75, the inlet end of the first arc portion 74 is connected to the water inlet pipe 55, the outlet end of the first arc portion 74 is connected to the inlet end of the adjustment flow channel 571, the inlet end of the second arc portion 75 is connected to the outlet end of the adjustment flow channel 571, and the outlet end of the second arc portion 75 is connected to the water outlet pipe 56.

[0052] Reference Fig. 9 , Fig.10 The adjustment seat 57 is provided with an adjustment member 8. When the first baffle 53 is lifted, the adjustment member 8 gradually expands the flow of the adjustment channel 571. The adjustment member 8 includes an adjustment plate 81 and a return spring 82. The top wall of the adjustment seat 57 is provided with an adjustment groove 572 connected to the adjustment channel 571. The adjustment plate 81 is slidably installed in the adjustment groove 572 and fixedly connected to the lower surface of the first baffle 53. The plate surface of the adjustment plate 81 is provided with an adjustment hole 811.

[0053] The return spring 82 is sleeved on the outer peripheral side of the sliding rod 591, one end of the return spring 82 is fixedly connected to the sliding ring 58, and the other end is fixedly connected to one of the fixed rings 59. Under normal conditions, the first baffle 53 abuts against the support surface 731 of the connecting piece 73 under the action of its own gravity and the return spring 82; when the first baffle 53 abuts against the connecting piece 73, the connection area between the adjusting hole 811 and the adjusting channel 571 is the smallest, and when the first baffle 53 is lifted, the connection area between the adjusting hole 811 and the adjusting channel 571 gradually increases.

[0054] The implementation principle of Example 4 of the present application is: in the process of the mixed gas passing through the connecting flow channel 51, when the driving force of the mixed gas on the first baffle 53 exceeds a certain value (when the gas pressure of the mixed gas reaches a certain value), the mixed gas pushes the first baffle 53 and forces the first baffle 53 to rise. At this time, the first baffle 53 drives the adjustment plate 81 to rise, thereby changing the connection area between the adjustment hole 811 and the adjustment flow channel 571, and as the first baffle 53 rises, the connection area between the adjustment hole 811 and the adjustment flow channel 571 gradually increases, thereby increasing the flow rate of the cooling medium in the cooling pipe 7, thereby improving the heat exchange efficiency.

[0055] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Two-stage air compressor, characterized by: The invention comprises a compression main unit (1), an oil and gas barrel (2), an air cooler (3) and an oil cooler (4); the compression main unit (1) is connected to an air intake pipe (11), the air intake pipe (11) is provided with an air intake valve (111), and the inlet end of the air intake pipe (11) is connected to an air filter (112); a delivery pipe (12) is connected between the compression main unit (1) and the oil and gas barrel (2), and an air delivery pipe (21) is connected between the oil and gas barrel (2) and the air cooler (3). An oil delivery pipe (22) is connected between the oil and gas barrel (2) and the oil cooler (4); the inlet end of the gas delivery pipe (21) is higher than the outlet end of the delivery pipe (12), and the inlet end of the oil delivery pipe (22) is lower than the outlet end of the delivery pipe (12); an oil and gas separator core (23) is installed in the oil and gas barrel (2), and the outlet end of the oil and gas separator core (23) is connected to the inlet end of the gas delivery pipe (21); a deceleration baffle (5) is installed on the inner wall of the oil and gas barrel (2), The deceleration baffle (5) divides the interior of the oil and gas barrel (2) into a floating area (24) and a sinking area (25); the inlet end of the gas delivery pipe (21) is connected to the floating area (24), and the inlet end of the oil delivery pipe (22) is connected to the sinking area (25); the deceleration baffle (5) is annular around the central axis of the oil and gas barrel (2) and forms a connecting flow channel (51); the floating area (24) and the sinking area (25) are connected to each other through the connecting flow channel (51); the deceleration baffle (5) ) and the inner wall of the oil and gas barrel (2), and the deceleration zone (52) is connected to the sinking zone (25); the delivery pipe (12) is connected to a plurality of branch pipes (121), the inlet end of each branch pipe (121) is connected to the outlet end of the delivery pipe (12), the outlet end of each branch pipe (121) is connected to the deceleration zone (52), and the outlet ends of the plurality of branch pipes (121) are arranged at intervals around the central axis of the oil and gas barrel (2).

2. The two-stage air compressor according to claim 1, characterized in that: A first baffle (53) and a second baffle (54) are respectively arranged in the communicating flow channel (51); a plurality of the first baffle (53) and the second baffle (54) are arranged at intervals along the central axis of the oil and gas barrel (2); and the plurality of first baffles (53) and the plurality of second baffles (54) are arranged in a staggered manner; an outer peripheral wall of the first baffle (53) is connected to an inner peripheral wall of the deceleration baffle (5); a first opening (531) is formed on the inner peripheral wall of the first baffle (53); a second opening (541) is formed between the outer peripheral wall of the second baffle (54) and the inner peripheral wall of the deceleration baffle (5); and a connecting piece (6) is provided on the second baffle (54); and the second baffle (54) is mounted on the first baffle (53) adjacent to the bottom through the connecting piece (6).

3. The two-stage air compressor according to claim 2, characterized in that: The inner peripheral wall of the first baffle (53) has a first folded edge (532), and a first oil storage groove (533) is formed between the first folded edge (532) and the surface of the first baffle (53); the outer peripheral wall of the second baffle (54) has a second folded edge (542), and a second oil storage groove (543) is formed between the second folded edge (542) and the surface of the second baffle (54).

4. The two-stage air compressor according to claim 2, characterized in that: The vertical section of the first baffle (53) is gradually inclined downward from the outside to the inside, and a first collision zone (534) is formed between the lower surface of the first baffle (53) and the inner peripheral wall of the deceleration baffle (5); the vertical section of the second baffle (54) is gradually inclined downward from the inside to the outside, and the bottom of the second baffle (54) forms a second collision zone (544).

5. The two-stage air compressor according to claim 4, characterized in that: A cooling pipe (7) is installed at the opening of the first collision zone (534), and the cooling pipe (7) is annular around the central axis of the oil and gas barrel (2); a third opening (71) is formed between the cooling pipe (7) and the inner peripheral wall of the deceleration baffle (5), and a fourth opening (72) is formed between the cooling pipe (7) and the lower surface of the first baffle (53).

6. The two-stage air compressor according to claim 5, characterized in that: The cooling pipe (7) is connected to a connecting plate (73), and a plurality of connecting plates (73) are arranged at intervals around the central axis of the oil and gas barrel (2), each of the connecting plates (73) is connected to the deceleration baffle (5), and the cooling pipe (7) is installed on the deceleration baffle (5) through the plurality of connecting plates (73); the connecting plate (73) has a supporting surface (731) for supporting the first baffle (53).

7. The two-stage air compressor according to claim 6, characterized in that: The connecting piece (73) extends into the deceleration zone (52) at a side away from the cooling pipe (7), and the connecting piece (73) is a copper sheet.

8. The two-stage air compressor according to claim 6, characterized in that: The deceleration baffle (5) is respectively connected to a water inlet pipe (55) and a water outlet pipe (56); an adjustment seat (57) is provided at the opening of the first collision zone (534); an adjustment channel (571) is provided in the adjustment seat (57); the cooling pipe (7) comprises a first arc-shaped portion (74) and a second arc-shaped portion (75); the inlet end of the first arc-shaped portion (74) is connected to the water inlet pipe (55); the outlet end of the first arc-shaped portion (74) is connected to the inlet end of the adjustment channel (571); the inlet end of the second arc-shaped portion (75) is connected to the outlet end of the adjustment channel (571); the outlet end of the second arc-shaped portion (75) is connected to the outlet pipe (56); the first baffle (53) is slidably mounted on the inner peripheral wall of the deceleration baffle (5); the adjustment seat (57) is provided with an adjustment member (8); when the first baffle (53) is lifted, the adjustment member (8) gradually expands the flow of the adjustment channel (571).

9. The two-stage air compressor according to claim 8, characterized in that: The inner peripheral wall of the deceleration baffle (5) is slidably mounted with a sliding ring (58); the outer peripheral wall of the first baffle (53) is connected to the sliding ring (58); the first baffle (53) is mounted on the inner peripheral wall of the deceleration baffle (5) through the sliding ring (58); the adjusting member (8) comprises an adjusting plate (81) and a return spring (82); the top wall of the adjusting seat (57) is provided with an adjusting groove (572) connected to the adjusting flow channel (571); the adjusting plate (81) is slidably mounted in the adjusting groove (572) and is fixedly connected to the lower surface of the first baffle (53); The adjusting plate (81) is provided with an adjusting hole (811) on its surface; the return spring (82) is installed between the sliding ring (58) and the deceleration baffle (5); the return spring (82) forces the first baffle (53) to abut against the connecting plate (73); when the first baffle (53) abuts against the connecting plate (73), the communicating area between the adjusting hole (811) and the adjusting flow channel (571) is the smallest; when the first baffle (53) is lifted, the communicating area between the adjusting hole (811) and the adjusting flow channel (571) gradually increases.

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