Small-power high-speed compressor head

Abstract

The invention provides a low-power high-speed compressor head, and belongs to the technical field of piston type compressors. Comprising a machine box and a crank connecting rod mechanism, the crank connecting rod mechanism is installed in the machine box, connecting arms are fixedly installed on the end walls of the two sides of the machine box, guide connecting grooves are formed in the inner walls of the four sets of connecting arms, and connecting rods are slidably connected to the inner walls of the guide connecting grooves. Three types of special compression modules, namely the first compression part, the second compression part and the combined compression part, are arranged, the first compression part is adaptive to pressurization of medium-low pressure pure gas such as natural gas, the second compression part is adaptive to pressurization of multi-source inlet gas such as ammonia gas, and the combined compression part is adaptive to pressurization of ultrahigh pressure gas such as carbon dioxide and hydrogen; and meanwhile, the multi-element medium pressurizing requirement under the space-limited environments such as vehicle-mounted and skid-mounted environments can be met, and application scenes can be switched without replacing the whole machine.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of piston compressors, in particular to a small-power high-speed compressor head. BACKGROUND

[0002] In the technical field of piston compressors, the pressurization requirements of different media such as natural gas, carbon dioxide, ammonia and hydrogen are increasingly diversified, and the application scenarios are gradually extended to space-limited environments such as vehicle-mounted, pry-mounted and container-mounted environments. The traditional compressor head has been difficult to meet the multi-dimensional use requirements, and its core defects have become increasingly prominent.

[0003] The existing compressor head mostly adopts a single compression structure design, lacks a targeted adaptation mechanism, for example, in the natural gas pressurization scene, wellhead associated gas often has occasional pressure fluctuations, which easily leads to sudden changes in gas pressure, affects the stability of gas delivery, causes the piston to be offset by force, aggravates wear and tear, and shortens the service life of the equipment. In the gas pressurization scene of multi-source gas adaptation environment, the existing equipment lacks a special gas mixing and pressure balancing structure, and problems such as local gas accumulation and uneven mixing are easily caused. In the super-high pressure pressurization scene, the existing small-power head mostly adopts a single-stage compression or simple multi-stage compression structure, which is difficult to achieve stable multi-stage pressurization, and the cylinder sealing performance is insufficient, and gas leakage is easily caused under high pressure. Therefore, the application provides a small-power high-speed compressor head to meet the needs. SUMMARY

[0004] The technical problem to be solved by the application is to provide a small-power high-speed compressor head. Three types of special compression modules, i.e., a first compression part, a second compression part and a combined compression part, are provided. The first compression part is adapted to natural gas and other medium-low pressure pure gas pressurization, the second compression part is adapted to ammonia and other multi-source gas pressurization, and the combined compression part is adapted to carbon dioxide, hydrogen and other super-high pressure gas pressurization. The application can meet the multi-media pressurization requirements in space-limited environments such as vehicle-mounted and pry-mounted environments without replacing the entire machine to switch application scenarios. A crank connecting rod mechanism, a connecting arm and a connecting rod are provided. The crank connecting rod mechanism is driven by a motor, four connecting rods are driven synchronously by the crank connecting rod mechanism to drive the pistons of the compression parts to move, and the multi-module collaborative work is realized to improve the power transmission efficiency, thereby solving the problem that the existing compressor head is difficult to meet the multi-dimensional use requirements.

[0005] To solve the above technical problems, the application provides the following technical solutions: A small power high-speed compressor head, including a machine box and a crank connecting rod mechanism, the crank connecting rod mechanism is installed inside the machine box, the both sides of the machine box are fixedly installed with connecting arms, four groups of the inner walls of the connecting arms are provided with guide connecting grooves, the inner walls of the guide connecting grooves are slidably connected with connecting rods, four groups of connecting rods are arranged on the crank connecting rod mechanism, and the end walls of the four groups of connecting rods are fixedly connected with the four groups of connecting rods on the crank connecting rod mechanism, the end walls of the two groups of connecting arms on the left are respectively provided with first compression parts and second compression parts, and the end walls of the two groups of connecting arms on the right are respectively provided with combined compression parts, the outer wall of the machine box is fixedly installed with a motor, and the output end of the motor is fixedly connected with the crank shaft on the crank connecting rod mechanism.

[0006] Optionally, the first compression part comprises a first cylinder body, the top and bottom of the first cylinder body are fixedly installed with bridge type areas, the left two ends of the bridge type area on the top are fixedly installed with side guide pipes, the right two ends of the bridge type area on the bottom are fixedly installed with side guide pipes, the two groups of side guide pipes on the same side are in communication with the corresponding bridge type areas inside, and the bottoms penetrate the first cylinder body, the middle outer sides of the two groups of bridge type areas are provided with top guide openings, the bottoms of the side guide pipes are fixedly installed with one-way valves one, and the one-way valves one are located outside the intersection of the side guide pipes and the bridge type areas, the inner wall of the first cylinder body is fixedly installed with a high-pressure pipe, four groups of air guide holes are formed in the outer wall of the high-pressure pipe and are in communication with the bottoms of the corresponding side guide pipes, and the top of the first cylinder body is provided with an oil inlet channel one, and the oil inlet channel one penetrates the top of the high-pressure pipe.

[0007] Optionally, the inner wall of the high-pressure pipe is sealingly and slidably installed with a piston one, and the piston one is located between the two groups of side guide pipes on the same side, the end wall of the piston one is fixedly installed with a push rod one, and the push rod one sealingly penetrates the first cylinder body, the end wall of the push rod one is fixedly connected with the inner connecting rod end wall of the corresponding connecting arm, the valve directions of the two groups of one-way valves one on the same end are opposite, and the valve directions of the two groups of one-way valves one on the same side are same.

[0008] Optionally, the second compression part comprises a second cylinder body, the inner walls of the top and bottom of the second cylinder body are provided with gas mixing areas, the outer walls of the two ends of the top and bottom of the second cylinder body are provided with first material inlets, four groups of the first material inlets are in communication with the corresponding gas mixing areas, the outer walls of the centers of the top and bottom of the second cylinder body are provided with second material inlets, two groups of the second material inlets are in communication with the corresponding gas mixing areas, the side walls of the top and bottom of the second cylinder body are provided with first gas exchange openings, and two groups of the first gas exchange openings are in communication with the corresponding gas mixing areas, the inner wall of the middle of the second cylinder body is provided with a compression channel one, the top of the second cylinder body is provided with an oil inlet channel two, and the oil inlet channel two is in communication with the inside of the compression channel one, the bottoms of the two ends of the gas mixing area are fixedly installed with one-way valves two, and the gas mixing area is in communication with the inside of the compression channel one through the one-way valves two.

[0009] Optionally, an inner wall of the compression channel one is sealingly and slidably provided with a piston two, the piston two is located between two groups of the first feeding ports on the same side, an end wall of the piston two is fixedly provided with a push rod two, the push rod two sealingly penetrates the second cylinder body, an end wall of the push rod two is fixedly connected with an end wall of an inner connecting rod of the corresponding connecting arm, the valve directions of the upper and lower two groups of the second one-way valves located on the same end are opposite, and the valve directions of the left and right two groups of the second one-way valves located on the same side are the same.

[0010] Optionally, the combined compression part comprises a third cylinder body and a fourth cylinder body, flanges are sealingly and fixedly connected between end walls of the third cylinder body and the fourth cylinder body, the third cylinder body is provided with an exhaust channel in inner walls of a top and a bottom thereof, the third cylinder body is provided with a fourth feeding port in left outer walls of the top and the bottom thereof, two groups of the fourth feeding ports are in internal communication with corresponding exhaust channels, the third cylinder body is provided with a third feeding port in outer walls of the top and the bottom thereof, two groups of the third feeding ports are in internal communication with corresponding exhaust channels, the third cylinder body is provided with a second air exchange port in right outer walls of the top and the bottom thereof, two groups of the second air exchange ports are in internal communication with corresponding exhaust channels, the third cylinder body is provided with a second compression channel in an inner wall of a middle portion thereof, the exhaust channel is fixedly provided with a third one-way valve in a left inner wall thereof, and the exhaust channel is in internal communication with the second compression channel through the third one-way valve, and the third cylinder body is provided with a third oil inlet channel in an outer wall of the middle portion thereof, and the third oil inlet channel is in internal communication with the second compression channel.

[0011] Optionally, the fourth cylinder body is provided with a third compression channel in an inner wall of a middle portion thereof, the fourth cylinder body is provided with a fifth feeding port in outer walls of a top and a bottom thereof, the fourth cylinder body is provided with a sixth feeding port in the outer walls of the top and the bottom thereof, the sixth feeding port is in communication with the fifth feeding port on the same side, the fourth cylinder body is fixedly provided with a fourth one-way valve in inner walls of two ends thereof, and the fifth feeding port is in communication with the third compression channel through the fourth one-way valve.

[0012] Optionally, an inner wall of the second compression channel is sealingly and slidably provided with a piston three, an end wall of the piston three is fixedly provided with a push rod three, the push rod three sealingly penetrates the third cylinder body, an end wall of the push rod three is fixedly connected with an end wall of an inner connecting rod of the corresponding connecting arm, and valve directions of two groups of the third one-way valves are opposite, an inner wall of the third compression channel is sealingly and slidably provided with a piston four, an end wall of the piston four is fixedly provided with a push rod four, and an end wall of the push rod four is fixedly connected with an opposite end wall of the piston three, and valve directions of two groups of the fourth one-way valves are opposite.

[0013] Compared with the prior art, the present application has at least the following beneficial effects:

[0014] In the above scheme, three types of special compression modules, namely the first compression part, the second compression part and the combined compression part, are provided, wherein the first compression part is suitable for natural gas and other medium-low pressure pure gas pressure boosting, the second compression part is suitable for ammonia and other multi-source gas pressure boosting, and the combined compression part is suitable for carbon dioxide, hydrogen and other super-high pressure gas pressure boosting. At the same time, it can meet the multi-medium pressure boosting demand in the space-limited environment such as vehicle-mounted and pry-mounted, and can switch the application scene without replacing the whole machine. At the same time, by setting the crank connecting rod mechanism, the connecting arm and the connecting rod, the crank connecting rod mechanism is driven by the motor, and the four groups of connecting rods are driven synchronously to drive the piston movement of each compression part, realizing the collaborative work of multiple modules and improving the power transmission efficiency.

[0015] By setting the bridge type area, the problem of sudden change of compressed gas pressure and offset of piston stress caused by occasional fluctuation of wellhead associated gas and other medium pressure is solved. The first compression part is provided with a bridge type area and a bidirectional side conduit structure, wherein the bridge type area can offset the "pulse impact" when the gas enters, avoiding the direct impact of high pressure gas flow on the internal components of the cylinder body. At the same time, through the symmetrical distribution of the side conduit and the one-way valve, the uniform distribution of high pressure gas in the pipe can be ensured, and the piston is prevented from being stressed on one side, thereby reducing the piston wear and prolonging the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the application and, together with the description, further serve to explain the principles of the application and to enable a person skilled in the relevant art to implement and use the application.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of a small power high-speed compressor head; Figure 2 It is an installation position drawing of the crank connecting rod mechanism in the case; Figure 3 It is an assembly drawing of the connecting arm and the first compression part; Figure 4 It is an assembly drawing of the connecting rod and the crank connecting rod mechanism in the connecting arm; Figure 5 It is a structural schematic diagram of the first compression part; Figure 6 It is an assembly drawing of the first cylinder body and the piston; Figure 7 It is an oblique sectional view of the first cylinder body; Figure 8 It is a structural schematic diagram of the second compression part; Figure 9 It is a sectional view of the second compression part; Figure 10 It is a sectional view of the second cylinder body; Figure 11 It is a structural schematic diagram of the combined compression part; Figure 12 is a bottom structure diagram of the combined compression part; Figure 13 is an assembly diagram of the third cylinder and the fourth cylinder; Figure 14 is a sectional view of the combined compression part; Figure 15 is an assembly diagram of the third cylinder, the fourth cylinder, the third piston and the fourth piston.

[0018] Reference signs: chassis 100, connecting arm 110, lead groove 111, connecting rod 112, first compression part 120, first cylinder 121, bridge type area 122, top guide port 123, side guide pipe 124, one-way valve one 125, high-pressure pipe 126, oil inlet passage one 127, air guide hole 128, push rod one 130, piston one 131, second compression part 140, second cylinder 141, gas mixing area 142, feed inlet one 143, feed inlet two 144, gas exchange port one 145, oil inlet passage two 146, one-way valve two 147, compression passage one 150, push rod two 151, piston two 152, combined compression part 160, third cylinder 161, exhaust passage 162, feed inlet three 163, feed inlet four 164, gas exchange port two 165, oil inlet passage three 166, one-way valve three 167, fourth cylinder 171, feed inlet five 172, feed inlet six 173, one-way valve four 174, compression passage two 180, compression passage three 181, push rod three 182, piston three 183, push rod four 184, piston four 185, crank connecting rod mechanism 200, motor 210.

[0019] As shown in the drawings, in order to clearly realize the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for the need of illustration, and is not intended to limit the present application in the specific structures, devices and environments, and those skilled in the art can adjust or modify these devices and environments according to specific needs. DETAILED DESCRIPTION

[0020] A small-power high-speed compressor head provided by the present application is described in detail below in combination with the drawings and specific embodiments. It is explained here that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and other alternative ways can also be adopted by those skilled in the art to implement some known technologies; and the drawings are only used to more specifically describe the embodiments, and are not intended to specifically limit the present application.

[0021] As Figures 1 to 15As shown, the embodiment of the present application provides a small power high-speed compressor head, which comprises a box 100 and a crank connecting rod mechanism 200, the crank connecting rod mechanism 200 is installed inside the box 100, both sides of the box 100 are fixedly provided with connecting arms 110, four groups of connecting arms 110 are provided with guide grooves 111, the guide grooves 111 are slidably connected with connecting rods 112, the crank connecting rod mechanism 200 is provided with four groups of connecting rods, and the four groups of connecting rods 112 are fixedly connected with the four groups of connecting rods on the crank connecting rod mechanism 200, the left two groups of connecting arms 110 are respectively provided with first compression parts 120 and second compression parts 140, the right two groups of connecting arms 110 are respectively provided with combined compression parts 160, the box 100 is fixedly provided with a motor 210, and the output end of the motor 210 is fixedly connected with a crank shaft on the crank connecting rod mechanism 200.

[0022] In the embodiment, as Figure 2 、 Figures 5 to 7As shown, the first compression part 120 comprises a first cylinder body 121, the top and bottom of the first cylinder body 121 are fixedly installed with bridge type zones 122, the left ends of the bridge type zones 122 on the top and the right ends of the bridge type zones 122 on the bottom are fixedly installed with side pipes 124, the two groups of side pipes 124 on the same side are in communication with the corresponding bridge type zones 122 inside, and the bottom penetrates through the first cylinder body 121, due to the establishment of the bridge type zones 122, at this time, the “pulse impact” (such as the pressure occasional fluctuation of wellhead associated gas) when the gas is inhaled can be offset, the direct impact of high-pressure gas flow on the side pipe 124 and the high-pressure pipe 126 is avoided, the compression pressure is prevented from rising or falling suddenly, and the uneven distribution of gas in the high-pressure pipe 126 caused by one-sided gas intake is also avoided, thereby preventing the force deviation of the piston 131 and the aggravation of wear. The middle outside of the two groups of bridge type zones 122 is provided with top guide ports 123, the bottom port of the side pipe 124 is fixedly installed with a one-way valve 125, and the one-way valve 125 is located outside the intersection of the side pipe 124 and the bridge type zone 122, the inner wall of the first cylinder body 121 is fixedly installed with a high-pressure pipe 126, four groups of gas guide holes 128 are formed in the outer wall of the high-pressure pipe 126 and are in communication with the bottom of the corresponding side pipe 124, the top of the high-pressure pipe 126 is provided with an oil inlet channel 127, and the oil inlet channel 127 penetrates through the top of the high-pressure pipe 126. The inner wall of the high-pressure pipe 126 is sealingly and slidably installed with a piston 131, and the piston 131 is located between the two groups of side pipes 124 on the same side. The end wall of the piston 131 is fixedly installed with a push rod 130, and the push rod 130 sealingly penetrates through the first cylinder body 121. The end wall of the push rod 130 is fixedly connected with the end wall of the connecting rod 112 inside the connecting arm 110. The valve directions of the upper and lower two groups of one-way valves 125 on the same end are opposite, and the valve directions of the left and right two groups of one-way valves 125 on the same side are the same. In the present application, when pure gas compression, medium and low pressure compression and natural gas pressurization are carried out, attention should be paid to the uniformity of gas pressure during gas transmission to prevent sudden changes in gas pressure and thus prevent danger. At this time, natural gas is introduced into the bridge type zone 122 through the top guide port 123 on the top, so that the bridge type zone 122 on the top is filled with natural gas, and the two groups of side pipes 124 on the top are externally connected with natural gas. The motor 210 drives the crank connecting rod mechanism 200 to drive the connecting rod 112 and the push rod 130 to reciprocate, thereby driving the piston 131 to reciprocate, thereby changing the gas pressure on both sides of the piston 131 in the high-pressure pipe 126. That is, when the piston 131 moves to the right, negative pressure is formed on the left side of the high-pressure pipe 126, and the gas in the bridge type zone 122 on the top enters the high-pressure pipe 126 through the one-way valve 125 of the left side pipe 124. When the piston 131 moves to the left, the gas in the left side of the high-pressure pipe 126 is compressed and discharged through the one-way valve 125 of the left side pipe 124 on the bottom (the right side of the high-pressure pipe 126 is the same). Since the bridge type zone 122 is in communication with the side pipe 124, the natural gas discharged through the side pipe 124 is preferentially filled into the bridge type zone 122 on the bottom.

[0023] In the present embodiment, as shown in Figure 1 、 Figures 8 to 10 The second compression part 140 includes a second cylinder 141, the top and bottom inner walls of the second cylinder 141 are provided with a gas mixing area 142, the gas mixing area 142 allows gas to mix inside, the top and bottom outer walls of the second cylinder 141 are provided with a first feeding port 143, four groups of the first feeding port 143 are communicated with the corresponding gas mixing area 142, the top and bottom center outer walls of the second cylinder 141 are provided with a second feeding port 144, two groups of the second feeding port 144 are communicated with the corresponding gas mixing area 142, the top and bottom side walls of the second cylinder 141 are provided with a first gas exchange port 145, and two groups of the first gas exchange port 145 are communicated with the corresponding gas mixing area 142, the middle inner wall of the second cylinder 141 is provided with a compression channel 150, the top of the second cylinder 141 is provided with an oil inlet channel 146, and the oil inlet channel 146 is communicated with the inside of the compression channel 150, the bottom of the two ends of the gas mixing area 142 is fixedly installed with a one-way valve 147, and the gas mixing area 142 is communicated with the inside of the compression channel 150 through the one-way valve 147, the inner wall of the compression channel 150 is sealingly and slidably installed with a piston 152, and the piston 152 is located between the two groups of the first feeding port 143 on the same side, the end wall of the piston 152 is fixedly installed with a push rod 151, and the push rod 151 sealingly penetrates the second cylinder 141, the end wall of the push rod 151 is fixedly connected with the end wall of the inner connecting rod 112 of the connecting arm 110, the valve directions of the upper and lower two groups of the one-way valve 147 located at the same end are opposite, and the valve directions of the left and right two groups of the one-way valve 147 located at the same side are the same, in the present application, when the gas needs to be pressurized in a multi-source gas adaptation environment, for example, ammonia is recovered from industrial tail gas, the second compression part 140 is provided with the gas mixing area 142, the first feeding port 143, the second feeding port 144 and the first gas exchange port 145, wherein the first feeding port 143 can be connected to low-concentration ammonia tail gas (5%-15%), the second feeding port 144 is connected to high-concentration ammonia tail gas (15%-30%), the first gas exchange port 145 is connected to inert gas (nitrogen) as a pressure balance port, so that the gases are mixed in the gas mixing area 142, when the pressure in the gas mixing area 142 suddenly drops (such as feeding interruption), nitrogen can be supplemented to prevent air backflow (air mixed with ammonia has an explosion risk), at the same time, the first gas exchange port 145 can discharge the trace amount of residual air in the gas mixing area 142, at the same time, the gas mixing area 142 is designed to avoid local accumulation of gas, reduce the risk of poisoning after leakage, and particularly, the two first gas exchange ports 145 are connected together, so that the gas can be repeatedly pressurized to meet the high-pressure pressurization requirement.

[0024] In the present embodiment, as shown in Figure 1 、 Figures 11 to 15As shown, the combined compression part 160 includes a third cylinder 161 and a fourth cylinder 171, the third cylinder 161 and the fourth cylinder 171 are sealingly connected at the end wall through the flange plate, the top and bottom inner walls of the third cylinder 161 are provided with exhaust passages 162, the left outer walls of the top and bottom of the third cylinder 161 are provided with two groups of feed ports four 164, and the two groups of feed ports four 164 are internally communicated with the corresponding exhaust passages 162, the top and bottom outer walls of the third cylinder 161 are provided with feed ports three 163, and the two groups of feed ports three 163 are internally communicated with the corresponding exhaust passages 162, the right outer walls of the top and bottom of the third cylinder 161 are provided with two groups of air exchange ports two 165, and the two groups of air exchange ports two 165 are internally communicated with the corresponding exhaust passages 162, the exhaust passages 162, the feed ports three 163 and the feed ports four 164 arranged in the third cylinder 161 can pass into the gas to be compressed, at the same time, the feed ports three 163 can ensure that the gas pressure in the exhaust passages 162 is stable, the middle inner wall of the third cylinder 161 is provided with a compression passage two 180, the compression passage two 180 in the third cylinder 161 can compress the gas in the third cylinder 161, the left inner wall of the exhaust passage 162 is fixedly installed with a one-way valve three 167, and the exhaust passage 162 is internally communicated with the compression passage two 180 through the one-way valve three 167, the middle outer wall of the third cylinder 161 is provided with an oil inlet passage three 166, whether to pass in lubricating oil can be selected according to the gas to be pressurized, for example, when pressurizing carbon dioxide gas, no lubricating oil can be added, and the oil inlet passage three 166 is internally communicated with the compression passage two 180, the middle inner wall of the fourth cylinder 171 is provided with a compression passage three 181, the top and bottom outer walls of the fourth cylinder 171 are provided with feed ports five 172, the top and bottom outer walls of the fourth cylinder 171 are provided with feed ports six 173, and the feed ports six 173 are communicated with the feed ports five 172 on the same side, the inner walls of the two ends of the fourth cylinder 171 are fixedly installed with one-way valves four 174, and the feed ports five 172 are communicated with the compression passage three 181 through the one-way valves four 174, the inner wall of the compression passage two 180 is sealingly and slidably installed with a piston three 183, the end wall of the piston three 183 is fixedly installed with a push rod three 182, and the push rod three 182 sealingly penetrates the third cylinder 161, the end wall of the push rod three 182 is fixedly connected with the end wall of the connecting rod 112 of the connecting arm 110, the valve directions of the two groups of one-way valves three 167 are opposite, the inner wall of the compression passage three 181 is sealingly and slidably installed with a piston four 185, the end wall of the piston four 185 is fixedly installed with a push rod four 184, and the end wall of the push rod four 184 is fixedly connected with the other side end wall of the piston three 183, the valve directions of the two groups of one-way valves four 174 are opposite, in the present application, when carrying out superhigh pressure pressurization projects such as carbon dioxide and hydrogen, the combined compression part 160 forms double compression passages through the compression passage two 180 and the compression passage three 181, realizes multi-stage compression, and the specific operation is that the top feed port four 164 is externally connected with low pressure carbon dioxide gas, and the top feed port three 163 maintains the carbon dioxide gas pressure in the top exhaust passage 162,Through the action of the two groups of one-way valves three 167 and pistons three 183, the carbon dioxide gas is pressurized and discharged from the end of the exhaust passage 162 of the second gas exchange port 165 at the bottom, and the medium-pressure carbon dioxide gas pressure discharged from the second gas exchange port 165 is introduced into the feed port five 172 at the top of the fourth cylinder body 171, and at the same time, the carbon dioxide gas is connected through the top feed port six 173, the medium-pressure environment at the top of the fourth cylinder body 171 is maintained, and then the piston three 183 can drive the piston four 185 to move synchronously, so that the medium-pressure carbon dioxide gas in the fourth cylinder body 171 can be pressurized again, thereby forming high-pressure carbon dioxide gas, and the super-high-pressure pressurization project is completed.

[0025] The working principle of the technical scheme provided by the application is as follows: the physical and chemical properties of different gases (natural gas, carbon dioxide, ammonia, and hydrogen) are quite different, resulting in significant differences in the core requirements of the compressor head for the pressurization project. For example, when performing a natural gas pressurization project (when natural gas is pressurized, attention should be paid to the uniformity of the gas pressure during gas transmission to prevent sudden changes in gas pressure and thus danger), natural gas is introduced into the bridge-type area 122 at the top through the top guide port 123, so that the bridge-type area 122 at the top is filled with natural gas, and natural gas is connected through the two groups of side guide pipes 124 at the top, the motor 210 drives the crank connecting rod mechanism 200 to drive the connecting rod 112 and the push rod one 130 to reciprocate, thereby driving the piston one 131 to reciprocate, thereby changing the gas pressure on both sides of the piston one 131 in the high-pressure pipe 126. That is, when the piston one 131 moves to the right, negative pressure is formed on the left side of the high-pressure pipe 126, and the gas in the bridge-type area 122 at the top enters the high-pressure pipe 126 through the one-way valve one 125 of the left side guide pipe 124, and when the piston one 131 moves to the left, the gas in the left side of the high-pressure pipe 126 is compressed and discharged through the one-way valve one 125 of the left side guide pipe 124 at the bottom (the right side of the high-pressure pipe 126 is the same), since the bridge-type area 122 is connected with the side guide pipe 124, the natural gas discharged through the side guide pipe 124 fills the bridge-type area 122 at the bottom first, since the bridge-type area 122 is established, the "pulse impact" during gas intake (such as occasional pressure fluctuations of wellhead associated gas) can be offset at this time, avoiding the direct impact of high-pressure gas flow on the side guide pipe 124 and the high-pressure pipe 126, resulting in a sudden increase or decrease in compression pressure, and also avoiding uneven distribution of gas in the high-pressure pipe 126 caused by one-sided gas intake, thereby preventing the piston one 131 from being forced to deviate and the wear being intensified, and at the same time, anti-sulfur lubricating oil can be injected through the oil inlet passage one 127 during the pressurization process, meeting the requirements of the lubrication system for natural gas pressurization, and avoiding the deterioration of lubricating oil caused by H2S. When the ammonia pressurization project is carried out (the multi-source gas inlet is matched with the environment pressurization, for example, the ammonia is recovered in the industrial tail gas), the second compression part 140 is provided with a gas mixing area 142, a first feeding port 143, a second feeding port 144 and a first gas exchange port 145, wherein the first feeding port 143 is connected with the low-concentration ammonia tail gas (5%-15%), the second feeding port 144 is connected with the high-concentration ammonia tail gas (15%-30%), the first gas exchange port 145 is connected with the inert gas (nitrogen) as a pressure balance port, the nitrogen is mixed in the gas mixing area 142, when the pressure in the gas mixing area 142 is suddenly reduced (for example, the feeding is interrupted), the nitrogen is supplemented to prevent the air from flowing backward (there is an explosion risk when the air is mixed with the ammonia), meanwhile, the first gas exchange port 145 can discharge the trace residual air in the gas mixing area 142, meanwhile, the gas mixing area 142 is designed to avoid the local accumulation of the gas, and the risk of poisoning after leakage is reduced, and the working mode is similar to that of the first compression part 120; When the super-high pressure pressurization project of carbon dioxide and hydrogen is carried out, the combined compression part 160 forms double compression channels through the second compression channel 180 and the third compression channel 181, realizes multi-stage compression, and the specific operation is as follows: the low-pressure carbon dioxide gas is connected with the fourth feeding port 164 at the top, the carbon dioxide gas pressure in the exhaust channel 162 at the top is maintained through the third feeding port 163 at the top, the carbon dioxide gas is pressurized through the action of the two one-way valves 167 and the piston 183, and then is discharged from the end of the exhaust channel 162 at the bottom through the second gas exchange port 165, the medium-pressure carbon dioxide gas pressure discharged from the second gas exchange port 165 is introduced into the fifth feeding port 172 at the top of the fourth cylinder 171, meanwhile, the carbon dioxide gas is connected with the sixth feeding port 173 at the top, the medium-pressure environment at the top of the fourth cylinder 171 is maintained, then the piston 183 can drive the piston 185 to move synchronously, so that the medium-pressure carbon dioxide gas in the fourth cylinder 171 can be pressurized again, thereby forming high-pressure carbon dioxide gas, and the super-high pressure pressurization project is completed.

[0026] The present application encompasses any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present application. In order to make the public have a thorough understanding of the present application, specific details are described in the following preferred embodiments of the present application, and the present application can also be completely understood without the description of these details for those skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the present application, well-known methods, processes, flows, elements and circuits are not described in detail.

[0027] The above is only the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A small power high speed compressor head comprising a casing (100) and a crank and connecting rod mechanism (200) mounted inside the casing (100), characterized in that, Both side end walls of the cabinet (100) are fixedly installed with connecting arms (110), four groups of inner walls of the connecting arms (110) are provided with guide connecting grooves (111), the guide connecting grooves (111) are slidably connected with connecting rods (112), four groups of connecting rods are arranged on the crank connecting rod mechanism (200), and the end walls of the four groups of connecting rods (112) are fixedly connected with the four groups of connecting rods on the crank connecting rod mechanism (200), the end walls of the two groups of connecting arms (110) on the left are respectively provided with first compression parts (120) and second compression parts (140), the end walls of the two groups of connecting arms (110) on the right are respectively provided with combined compression parts (160), the outer wall of the cabinet (100) is fixedly installed with a motor (210), and the output end of the motor (210) is fixedly connected with a crank shaft on the crank connecting rod mechanism (200).

2. A small power high speed compressor head according to claim 1, characterized in that, The first compression part (120) comprises a first cylinder body (121), bridge type areas (122) are fixedly installed on the top and bottom of the first cylinder body (121), side guide pipes (124) are fixedly installed on the left two ends of the bridge type area (122) on the top and the right two ends of the bridge type area (122) on the bottom, the two groups of side guide pipes (124) on the same side are in communication with the corresponding bridge type areas (122) inside, and the bottoms penetrate the first cylinder body (121), top guide openings (123) are formed in the outer sides of the middle portions of the two groups of bridge type areas (122), one-way valves (125) are fixedly installed on the bottom openings of the side guide pipes (124), and the one-way valves (125) are located outside the intersection of the side guide pipes (124) and the bridge type areas (122), high-pressure pipes (126) are fixedly installed on the inner walls of the first cylinder bodies (121), four groups of air guide holes (128) are formed in the outer walls of the high-pressure pipes (126) and are in communication with the bottoms of the corresponding side guide pipes (124), and oil inlet channels (127) are formed in the tops of the first cylinder bodies (121) and penetrate the tops of the high-pressure pipes (126).

3. A small power high speed compressor head according to claim 2, characterized in that, A piston (131) is sealingly and slidably installed on the inner wall of the high-pressure pipe (126), and the piston (131) is located between the two groups of side guide pipes (124) on the same side, a push rod (130) is fixedly installed on the end wall of the piston (131) and sealingly penetrates the first cylinder body (121), the end wall of the push rod (130) is fixedly connected with the end wall of the connecting rod (112) in the connecting arm (110), the valve directions of the upper and lower two groups of one-way valves (125) on the same end are opposite, and the valve directions of the left and right two groups of one-way valves (125) on the same side are the same.

4. A small power high speed compressor head according to claim 1, characterized in that, The second compression part (140) includes a second cylinder (141), the top and bottom inner walls of which are provided with gas mixing areas (142), the top and bottom outer walls of which are provided with first feeding ports (143), four groups of the first feeding ports (143) are communicated with the corresponding gas mixing areas (142), the top and bottom outer walls of the center of the second cylinder (141) are provided with second feeding ports (144), two groups of the second feeding ports (144) are communicated with the corresponding gas mixing areas (142), the top and bottom side walls of the second cylinder (141) are provided with first air exchange ports (145), two groups of the first air exchange ports (145) are communicated with the corresponding gas mixing areas (142), the middle inner wall of the second cylinder (141) is provided with a compression channel (150), the top of the second cylinder (141) is provided with an oil feeding channel (146), the oil feeding channel (146) is communicated with the inside of the compression channel (150), and the bottoms of the two ends of the gas mixing area (142) are fixedly installed with second one-way valves (147), the gas mixing area (142) is communicated with the inside of the compression channel (150) through the second one-way valves (147).

5. A small power high speed compressor head according to claim 4, characterized in that, The inner wall of the compression channel (150) is sealingly installed with a piston (152), the piston (152) is located between two groups of the first feeding ports (143) on the same side, the end wall of the piston (152) is fixedly installed with a push rod (151), the push rod (151) sealingly penetrates the second cylinder (141), the end wall of the push rod (151) is fixedly connected with the inner connecting rod (112) end wall of the connecting arm (110), the valve directions of the upper and lower two groups of the second one-way valves (147) located on the same end are opposite, and the valve directions of the left and right two groups of the second one-way valves (147) located on the same side are the same.

6. A small power high speed compressor head according to claim 1, characterized in that, The combined compression part (160) includes a third cylinder (161) and a fourth cylinder (171), the end wall connecting parts of the third cylinder (161) and the fourth cylinder (171) are sealingly and fixedly connected through flanges, the inner walls of the top and the bottom of the third cylinder (161) are provided with exhaust passages (162), the left outer walls of the top and the bottom of the third cylinder (161) are provided with four groups of feed inlets (164), the two groups of feed inlets (164) are in communication with the corresponding exhaust passages (162) inside, the outer walls of the top and the bottom of the third cylinder (161) are provided with three groups of feed inlets (163), the two groups of feed inlets (163) are in communication with the corresponding exhaust passages (162) inside, the right outer walls of the top and the bottom of the third cylinder (161) are provided with two groups of air exchange openings (165), the two groups of air exchange openings (165) are in communication with the corresponding exhaust passages (162) inside, the middle inner wall of the third cylinder (161) is provided with a compression passage two (180), the left inner wall of the exhaust passage (162) is fixedly installed with a one-way valve three (167), the exhaust passage (162) is in communication with the compression passage two (180) inside through the one-way valve three (167), and the middle outer wall of the third cylinder (161) is provided with an oil inlet passage three (166), and the oil inlet passage three (166) is in communication with the compression passage two (180) inside.

7. A small power high speed compressor head according to claim 6, characterized in that, The middle inner wall of the fourth cylinder (171) is provided with a compression passage three (181), the outer walls of the top and the bottom of the fourth cylinder (171) are provided with feed inlets five (172), the outer walls of the top and the bottom of the fourth cylinder (171) are provided with feed inlets six (173), the feed inlets six (173) are in communication with the feed inlets five (172) on the same side, and the inner walls of the two ends of the fourth cylinder (171) are fixedly installed with one-way valves four (174), and the feed inlets five (172) are in communication with the compression passage three (181) through the one-way valves four (174).

8. A small power high speed compressor head according to claim 7, characterized in that, The inner wall of the compression passage two (180) is sealingly and slidably installed with a piston three (183), the end wall of the piston three (183) is fixedly installed with a push rod three (182), the push rod three (182) sealingly penetrates the third cylinder (161), the end wall of the push rod three (182) is fixedly connected with the inner link (112) end wall of the corresponding connecting arm (110), the valve directions of the two groups of one-way valves three (167) are opposite, the inner wall of the compression passage three (181) is sealingly and slidably installed with a piston four (185), the end wall of the piston four (185) is fixedly installed with a push rod four (184), and the end wall of the push rod four (184) is fixedly connected with the other side end wall of the piston three (183), the valve directions of the two groups of one-way valves four (174) are opposite.

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