Low-power high-speed compressor head

Abstract

The application provides a small-power high-speed compressor head, and belongs to the technical field of piston compressors. The small-power high-speed compressor head comprises 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 two side end walls of the machine box, guide connecting grooves are formed in the inner walls of the four connecting arms, and connecting rods are slidably connected to the inner walls of the guide connecting grooves. The first compression part, the second compression part and the combined compression part are provided as three types of special compression modules, 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 gas 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. Meanwhile, the small-power high-speed compressor head can meet the multi-medium pressure boosting demand in the space-limited environment such as vehicle-mounted and pry-mounted environments, and the application scene can be switched without replacing the whole machine.

Description

Technical Field

[0001] This invention relates to the field of reciprocating compressor technology, and in particular to a low-power, high-speed compressor head. Background Technology

[0002] In the field of reciprocating compressor technology, the demand for pressurization of different media such as natural gas, carbon dioxide, ammonia, and hydrogen is becoming increasingly diverse, and the application scenarios are gradually extending to space-constrained environments such as vehicle-mounted, skid-mounted, and containerized systems. Traditional compressor heads can no longer meet the multi-dimensional usage requirements, and their core defects are becoming increasingly prominent.

[0003] Existing compressor heads mostly adopt a single compression structure design and lack targeted adaptation mechanisms. For example, in natural gas pressurization scenarios, associated gas at the wellhead often experiences occasional pressure fluctuations, which can easily lead to sudden changes in gas pressure, affecting the stability of gas delivery, causing piston force deviation, increased wear, and shortening the service life of the equipment. In gas pressurization scenarios with multi-source gas intake adaptation, existing equipment lacks a dedicated gas mixing and pressure balancing structure, which can easily lead to problems such as local gas accumulation and uneven mixing. In ultra-high pressure pressurization scenarios, existing low-power compressor heads mostly adopt single-stage compression or simple multi-stage compression structures, which are difficult to achieve stable multi-stage pressurization, and the cylinder sealing performance is insufficient, making it easy for gas leakage to occur under high pressure.

[0004] Therefore, this application provides a low-power, high-speed compressor head to meet the requirements. Summary of the Invention

[0005] The technical problem this invention aims to solve is to provide a low-power, high-speed compressor head. This is achieved by setting up three types of dedicated compression modules: a first compression section, a second compression section, and a combined compression section. The first compression section is suitable for pressurizing medium- and low-pressure pure gases such as natural gas; the second compression section is suitable for pressurizing multi-source intake gases such as ammonia; and the combined compression section is suitable for pressurizing ultra-high-pressure gases such as carbon dioxide and hydrogen. Simultaneously, it can meet the multi-medium pressurization needs in space-constrained environments such as vehicle-mounted and skid-mounted applications. The application scenarios can be switched without replacing the entire unit. Furthermore, by setting up a crank-connecting rod mechanism, connecting arms, and connecting rods, and using a motor to drive the crank-connecting rod mechanism, the four sets of connecting rods synchronously drive the pistons of each compression section, achieving multi-module collaborative work and improving power transmission efficiency. This solves the problem that existing compressor heads cannot meet multi-dimensional usage requirements.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A low-power high-speed compressor head includes a housing and a crank-connecting rod mechanism. The crank-connecting rod mechanism is installed inside the housing. Connecting arms are fixedly installed on both side end walls of the housing. Guide grooves are formed on the inner walls of the four sets of connecting arms. Connecting rods are slidably connected to the inner walls of the guide grooves. Four sets of connecting rods are provided on the crank-connecting rod mechanism, and the end walls of the four sets of connecting rods are fixedly connected to the four sets of connecting rods on the crank-connecting rod mechanism. A first compression section and a second compression section are respectively installed on the end walls of the two sets of connecting arms on the left side. A combined compression section is installed on the end walls of the two sets of connecting arms on the right side. A motor is fixedly installed on the outer wall of the housing, and the output end of the motor is fixedly connected to the crankshaft on the crank-connecting rod mechanism.

[0008] Optionally, the first compression section includes a first cylinder body. A bridge-shaped area is fixedly installed at the top and bottom of the first cylinder body. Side guide pipes are fixedly installed at both ends of the left side of the bridge-shaped area at the top and both ends of the bridge-shaped area at the bottom. Two sets of side guide pipes located on the same side are connected to the interior of the corresponding bridge-shaped area, and their bottoms penetrate the first cylinder body. A top guide port is opened on the outer side of the middle of the two sets of bridge-shaped areas. A one-way valve is fixedly installed at the bottom port of the side guide pipe, and the one-way valve is located on the outer side of the intersection of the side guide pipe and the bridge-shaped area. A high-pressure pipe is fixedly installed on the inner wall of the first cylinder body. Four sets of air guide holes are opened on the outer wall of the high-pressure pipe, and they are respectively connected to the bottom of the corresponding side guide pipes. An oil inlet channel is opened at the top of the first cylinder body, and the oil inlet channel penetrates the top of the high-pressure pipe.

[0009] Optionally, a piston is slidably installed on the inner wall of the high-pressure pipe, and the piston is located between two sets of side guides on the same side. A push rod is fixedly installed on the end wall of the piston and the push rod passes through the first cylinder body. The end wall of the push rod is fixedly connected to the end wall of the corresponding connecting rod in the connecting arm. The valve directions of the upper and lower sets of one-way valves on the same end are opposite, and the valve directions of the left and right sets of one-way valves on the same side are the same.

[0010] Optionally, the second compression section includes a second cylinder body. A mixing zone is formed on the inner walls of both the top and bottom of the second cylinder body. A feed inlet is formed on the outer walls of both the top and bottom ends of the second cylinder body, and four feed inlets are connected to the corresponding mixing zones. A feed inlet is formed on the outer walls of the center of both the top and bottom of the second cylinder body, and two feed inlets are connected to the corresponding mixing zones. An air exchange port is formed on the side walls of both the top and bottom of the second cylinder body, and two air exchange ports are connected to the corresponding mixing zones. A compression channel is formed on the inner wall of the middle section of the second cylinder body. An oil inlet channel is formed on the top of the second cylinder body, and the oil inlet channel is connected to the interior of the compression channel. One-way valves are fixedly installed at the bottom of both ends of the mixing zone, and the mixing zone is connected to the interior of the compression channel through the one-way valves.

[0011] Optionally, a piston 2 is slidably installed on the inner wall of the compression channel 1, and the piston 2 is located between two sets of feed ports 1 on the same side. A push rod 2 is fixedly installed on the end wall of the piston 2, and the push rod 2 sealably penetrates the second cylinder. The end wall of the push rod 2 is fixedly connected to the end wall of the corresponding connecting rod of the connecting arm. The valve directions of the upper and lower sets of one-way valves 2 located on the same end are opposite, and the valve directions of the left and right sets of one-way valves 2 located on the same side are the same.

[0012] Optionally, the combined compression unit includes a third cylinder and a fourth cylinder. The end walls of the third and fourth cylinders are sealed and fixedly connected by a flange. The top and bottom inner walls of the third cylinder are provided with exhaust channels. The top and bottom left outer walls of the third cylinder are provided with feed inlets four, and the two sets of feed inlets four are connected to the interior of the corresponding exhaust channels. The top and bottom outer walls of the third cylinder are provided with feed inlets three, and the two sets of feed inlets three are connected to the interior of the corresponding exhaust channels. The top and bottom right outer walls of the third cylinder are provided with venting ports two, and the two sets of venting ports two are connected to the interior of the corresponding exhaust channels. The middle inner wall of the third cylinder is provided with a compression channel two. A one-way valve three is fixedly installed on the left inner wall of the exhaust channel, and the exhaust channel is connected to the interior of the compression channel two through the one-way valve three. The middle outer wall of the third cylinder is provided with an oil inlet channel three, and the oil inlet channel three is connected to the interior of the compression channel two.

[0013] Optionally, a compression channel three is provided on the inner wall of the middle part of the fourth cylinder, and a feed port five is provided on the outer wall of the top and bottom of the fourth cylinder. A feed port six is ​​provided on the outer wall of the top and bottom of the fourth cylinder, and the feed port six is ​​connected to the feed port five on the same side. A one-way valve four is fixedly installed on the inner wall of both ends of the fourth cylinder, and the feed port five is connected to the compression channel three through the one-way valve four.

[0014] Optionally, a piston three is slidably and sealed on the inner wall of the compression channel two, and a push rod three is fixedly installed on the end wall of the piston three, with the push rod three sealingly penetrating the third cylinder body. The end wall of the push rod three is fixedly connected to the end wall of the corresponding connecting rod in the connecting arm. The valve directions of the two sets of one-way valves three are opposite. A piston four is slidably and sealed on the inner wall of the compression channel three, and a push rod four is fixedly installed on the end wall of the piston four, with the end wall of the push rod four fixedly connected to the other end wall of the piston three. The valve directions of the two sets of one-way valves four are opposite.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] In the above solution, three types of dedicated compression modules are set up: a first compression section, a second compression section, and a combined compression section. The first compression section is suitable for boosting medium and low pressure pure gases such as natural gas; the second compression section is suitable for boosting multi-source intake gases such as ammonia; and the combined compression section is suitable for boosting ultra-high pressure gases such as carbon dioxide and hydrogen. At the same time, it can meet the multi-media boosting needs in space-constrained environments such as vehicle-mounted and skid-mounted applications. The application scenarios can be switched without replacing the entire machine. In addition, by setting up a crank-connecting rod mechanism, connecting arms, and connecting rods, the crank-connecting rod mechanism is driven by a motor, which links the four sets of connecting rods to synchronously drive the pistons of each compression section, realizing multi-module collaborative work and improving power transmission efficiency.

[0017] By setting up a bridge-shaped zone, the first compression section addresses the problem of sudden changes in compressed gas pressure and piston force deviation caused by occasional fluctuations in the pressure of media such as associated gas at the wellhead. The bridge-shaped zone can offset the "pulse impact" during air intake, preventing high-pressure airflow from directly impacting the internal components of the cylinder. At the same time, the symmetrically distributed side guides and one-way valves ensure uniform gas distribution in the high-pressure pipe, preventing the piston from being subjected to force on one side, thereby reducing piston wear and extending the service life of the equipment. Attached Figure Description

[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0019] Figure 1 This is a three-dimensional structural diagram of a small-power, high-speed compressor head.

[0020] Figure 2 This is a diagram showing the installation position of the crank-connecting rod mechanism inside the chassis.

[0021] Figure 3 This is a schematic diagram of the assembly of the connecting arm and the first compression section;

[0022] Figure 4 This is a schematic diagram of the assembly of the connecting rod and crank-connecting rod mechanism.

[0023] Figure 5 This is a schematic diagram of the structure of the first compression section;

[0024] Figure 6 This is a schematic diagram of the assembly of the first cylinder block and piston one;

[0025] Figure 7 This is a sectional view of the first cylinder block;

[0026] Figure 8 This is a schematic diagram of the second compression section;

[0027] Figure 9 This is a cross-sectional view of the second compression section;

[0028] Figure 10 This is a cross-sectional view of the second cylinder block;

[0029] Figure 11 This is a schematic diagram of the combined compression section;

[0030] Figure 12 This is a bottom structural diagram of the combined compression section;

[0031] Figure 13 This is a schematic diagram of the assembly of the third and fourth cylinder blocks;

[0032] Figure 14 This is a sectional view of the combined compression section;

[0033] Figure 15 This is a schematic diagram of the assembly of the third cylinder block, the fourth cylinder block, and pistons three and four.

[0034] Figure label:

[0035] 100, chassis 110, connecting arm 111, guide groove 111, connecting rod 112, first compression section 120, first cylinder 121, bridge-type area 122, top guide port 123, side guide 124, one-way valve 125, high-pressure pipe 126, oil inlet channel 127, air guide port 128, push rod 130, piston 131, second compression section 140, second cylinder 141, mixing zone 142, feed inlet 143, feed inlet 2 144, air exchange port 145, oil inlet channel 2 146, one-way valve 2 147, compression channel 1 150, Push rod 2, 151, Piston 2, 152, Combined compression section, 160, Third cylinder, 161, Exhaust passage, 162, Feed inlet 3, 163, Feed inlet 4, 164, Air exchange port 2, 165, Oil inlet passage 3, 166, One-way valve 3, 167, Fourth cylinder, 171, Feed inlet 5, 172, Feed inlet 6, 173, One-way valve 4, 174, Compression passage 2, 180, Compression passage 3, 181, Push rod 3, 182, Piston 3, 183, Push rod 4, 184, Piston 4, 185, Crankshaft connecting rod mechanism, 200, Motor, 210.

[0036] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0037] The present invention provides a low-power high-speed compressor head in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0038] like Figures 1 to 15 As shown, an embodiment of the present invention provides a low-power high-speed compressor head, including a housing 100 and a crank-connecting rod mechanism 200. The crank-connecting rod mechanism 200 is installed inside the housing 100. Connecting arms 110 are fixedly installed on both end walls of the housing 100. The inner walls of the four sets of connecting arms 110 are provided with guide grooves 111. Connecting rods 112 are slidably connected to the inner walls of the guide grooves 111. The crank-connecting rod mechanism 200 is provided with four sets of connecting rods, and the end walls of the four sets of connecting rods 112 are respectively fixedly connected to the four sets of connecting rods on the crank-connecting rod mechanism 200. The end walls of the two sets of connecting arms 110 on the left are respectively installed with a first compression section 120 and a second compression section 140. The end walls of the two sets of connecting arms 110 on the right are respectively installed with a combined compression section 160. A motor 210 is fixedly installed on the outer wall of the housing 100, and the output end of the motor 210 is fixedly connected to the crankshaft on the crank-connecting rod mechanism 200.

[0039] In this embodiment, as Figure 2 , Figures 5 to 7As shown, the first compression section 120 includes a first cylinder 121. Bridge-shaped regions 122 are fixedly installed at both the top and bottom of the first cylinder 121. Side guide pipes 124 are fixedly installed at both ends of the left side of the top bridge-shaped region 122 and both ends of the bottom bridge-shaped region 122. Two sets of side guide pipes 124 located on the same side communicate with the interior of the corresponding bridge-shaped region 122, and their bottoms penetrate the first cylinder 121. Due to the establishment of the bridge-shaped regions 122, the "pulse impact" during air intake (such as occasional fluctuations in associated gas pressure at the wellhead) can be offset, preventing high-pressure airflow from directly impacting the side guide pipes 124 and the high-pressure pipe 126, thus avoiding a sudden increase or decrease in compression pressure. It also avoids uneven gas distribution in the high-pressure pipe 126 caused by unilateral air intake, thereby preventing piston 131 from... Due to stress shift and increased wear, top guide ports 123 are provided on the outer sides of the middle of both sets of bridge-type areas 122. A one-way valve 125 is fixedly installed at the bottom port of the side guide 124, and the one-way valve 125 is located on the outer side of the intersection of the side guide 124 and the bridge-type area 122. A high-pressure pipe 126 is fixedly installed on the inner wall of the first cylinder 121. Four sets of air guide holes 128 are provided on the outer wall of the high-pressure pipe 126, and they are respectively connected to the bottom of the corresponding side guide 124. An oil inlet channel 127 is provided on the top of the first cylinder 121, and the oil inlet channel 127 passes through the top of the high-pressure pipe 126. A piston 131 is slidably installed on the inner wall of the high-pressure pipe 126, and the piston 131 is located between the two sets of side guides 124 on the same side. The end wall of the piston 131 is fixedly installed. There is a push rod 130, which is sealed and penetrates the first cylinder body 121. The end wall of the push rod 130 is fixedly connected to the end wall of the connecting rod 112 in the corresponding connecting arm 110. The upper and lower sets of one-way valves 125 located at the same end have opposite valve directions, and the left and right sets of one-way valves 125 located on the same side have the same valve direction. In this invention, when performing pure gas compression or medium and low pressure compression, such as when boosting natural gas, attention should be paid to the uniformity of gas pressure during gas transmission to prevent sudden changes in gas pressure that could lead to danger. At this time, natural gas is introduced into the bridge-shaped area 122 through the top guide port 123, so that the bridge-shaped area 122 at the top is filled with natural gas. Natural gas is also connected to the outside through the two sets of side guide pipes 124 at the top. The drive motor 210 drives the crank-connecting rod mechanism 2 00 drives the connecting rod 112 and push rod 130 to reciprocate, thereby driving the piston 131 to reciprocate, thus 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, a negative pressure is formed on the left side of the high-pressure pipe 126, and the gas in the top bridge-shaped area 122 enters the high-pressure pipe 126 through the one-way valve 125 of the left side guide 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 bottom side guide pipe 124 (the same applies to the right side of the high-pressure pipe 126). Since the bridge-shaped area 122 is connected to the side guide pipe 124, the natural gas discharged through the side guide pipe 124 preferentially fills the bottom bridge-shaped area 122.

[0040] In this embodiment, as Figure 1 , Figures 8 to 10 As shown, the second compression unit 140 includes a second cylinder 141. The top and bottom inner walls of the second cylinder 141 are each provided with a mixing zone 142, which allows gases to mix. The top and bottom outer walls of the second cylinder 141 are each provided with a first feed inlet 143, and four sets of first feed inlets 143 communicate with the corresponding mixing zones 142. The top and bottom center outer walls of the second cylinder 141 are each provided with a second feed inlet 144, and two sets of second feed inlets 144 communicate with the corresponding mixing zones 142. The top and bottom side walls of the second cylinder 141 are each provided with a first air exchange port 145, and two sets of first air exchange ports 145 communicate with the corresponding mixing zones 142. The mixing zone 142 is connected. A compression channel 150 is provided on the inner wall of the middle part of the second cylinder 141. An oil inlet channel 146 is provided on the top of the second cylinder 141, and the oil inlet channel 146 is connected to the inside of the compression channel 150. One-way valves 147 are fixedly installed at the bottom of both ends of the mixing zone 142, and the mixing zone 142 is connected to the inside of the compression channel 150 through the one-way valves 147. A piston 152 is slidably installed on the inner wall of the compression channel 150, and the piston 152 is located between two sets of feed ports 143 on the same side. A push rod 151 is fixedly installed on the end wall of the piston 152. The second cylinder body 141 is sealed through the second cylinder 151. The end wall of the push rod 151 is fixedly connected to the end wall of the connecting rod 112 in the corresponding connecting arm 110. The upper and lower sets of one-way valves 147 located at the same end have opposite valve directions, and the left and right sets of one-way valves 147 located on the same side have the same valve direction. In this invention, when pressurizing gas in an environment requiring multi-source air intake adaptation, such as recovering ammonia from industrial exhaust gas, the second compression section 140 is provided with a mixing zone 142, a first inlet 143, a second inlet 144, and a first air exchange port 145. Among them, the first inlet 143 can be connected to low-concentration ammonia exhaust gas (5%-15%), and the second inlet 144... 144 is connected to a high-concentration ammonia tail gas (15%-30%). 145 serves as a pressure balancing port, through which an inert gas (nitrogen) is introduced to mix the gas in the mixing zone 142. When the pressure in the mixing zone 142 drops suddenly (such as when the feed is interrupted), nitrogen can be added to prevent backflow of air (there is a risk of explosion when air mixes with ammonia). At the same time, 145 can discharge trace amounts of residual air in the mixing zone 142. The design of the mixing zone 142 also avoids local gas accumulation and reduces the risk of poisoning after a leak. In particular, connecting the two sets of 145 together allows for repeated pressurization of the gas to meet high-pressure requirements.

[0041] In this embodiment, as Figure 1 , Figures 11 to 15As shown, the combined compression unit 160 includes a third cylinder 161 and a fourth cylinder 171. The end walls of the third cylinder 161 and the fourth cylinder 171 are sealed and fixed together by a flange. Exhaust channels 162 are provided on the inner walls of the top and bottom of the third cylinder 161. Inlet ports 164 are provided on the outer walls of the top and bottom left sides of the third cylinder 161, and both inlet ports 164 are internally connected to the corresponding exhaust channels 162. Inlet ports 163 are provided on the outer walls of the top and bottom of the third cylinder 161, and both inlet ports 163 are internally connected to the corresponding exhaust channels 162. Ventilation ports 165 are provided on the outer walls of the top and bottom right sides of the third cylinder 161, and both ventilation ports 165 are internally connected to the corresponding exhaust channels 162. The third cylinder 161 is equipped with an exhaust channel 162, a third feed port 163, and a fourth feed port 164 to allow the gas to be pressurized to pass through. Simultaneously, the third feed port 163 ensures stable gas pressure within the exhaust channel 162. A compression channel 180 is formed on the inner wall of the middle section of the third cylinder 161, which compresses the gas within the third cylinder 161. A one-way valve 167 is fixedly installed on the inner wall of the left side of the exhaust channel 162, and the exhaust channel 162 is connected to the inside of the compression channel 180 through the one-way valve 167. An oil inlet channel 166 is formed on the outer wall of the middle section of the third cylinder 161, allowing for the selection of whether to introduce lubricating oil depending on the gas to be pressurized. For example, when pressurizing carbon dioxide gas, lubricating oil is not required, and oil is introduced... Channel 3 166 is internally connected to compression channel 2 180. Compression channel 3 181 is provided on the inner wall of the middle part of the fourth cylinder 171. Inlet 5 172 is provided on the outer wall of the top and bottom of the fourth cylinder 171. Inlet 6 173 is provided on the outer wall of the top and bottom of the fourth cylinder 171, and inlet 6 173 is connected to inlet 5 172 on the same side. One-way valve 4 174 is fixedly installed on the inner wall of both ends of the fourth cylinder 171, and inlet 5 172 is connected to compression channel 3 181 through one-way valve 4 174. Piston 3 183 is slidably installed on the inner wall of compression channel 2 180. Push rod 3 182 is fixedly installed on the end wall of piston 3 183, and push rod 3 182 sealably penetrates the third cylinder 161. The end wall of push rod 3 182 is connected to the corresponding connecting rod. The inner wall of the connecting rod 112 of the arm 110 is fixedly connected. The valve directions of the two sets of one-way valves 167 are opposite. The inner wall of the compression channel 181 is sealed and slidably installed with a piston 185. The end wall of the piston 185 is fixedly installed with a push rod 184, and the end wall of the push rod 184 is fixedly connected to the other end wall of the piston 183. The valve directions of the two sets of one-way valves 174 are opposite. In this invention, when performing ultra-high pressure pressurization projects such as carbon dioxide and hydrogen, the combined compression unit 160 forms a dual compression channel through the compression channel 180 and the compression channel 181 to achieve multi-stage compression. Specifically, low-pressure carbon dioxide gas is connected to the outside through the top inlet 164, and the carbon dioxide gas pressure in the top exhaust channel 162 is maintained through the top inlet 163.After being pressurized by two sets of one-way valves 167 and piston 183, the carbon dioxide gas is discharged through the exhaust port 165 at the end of the bottom exhaust channel 162. The medium-pressure carbon dioxide gas discharged from the exhaust port 165 is then introduced into the feed port 172 at the top of the fourth cylinder 171. Simultaneously, carbon dioxide gas is connected to the outside through the feed port 173 at the top, maintaining a medium-pressure environment at the top of the fourth cylinder 171. Then, piston 183 drives piston 185 to move synchronously, thereby repressurizing the medium-pressure carbon dioxide gas in the fourth cylinder 171, forming high-pressure carbon dioxide gas, thus completing the ultra-high pressure pressurization project.

[0042] The working principle of the technical solution provided by this invention is as follows: Different gases (natural gas, carbon dioxide, ammonia, hydrogen) have vastly different physicochemical properties, resulting in significant differences in the core requirements of the compressor head for their pressurization projects. For example, in natural gas pressurization projects (when pressurizing natural gas, attention must be paid to the uniformity of gas pressure during transmission to prevent sudden pressure changes that could lead to danger), natural gas is introduced into the bridge-shaped area 122 through the top guide port 123, filling the top bridge-shaped area 122 with natural gas. Natural gas is then connected externally through the two sets of side conduits 124 at the top. The drive motor 210 causes the crank-connecting rod mechanism 200 to drive the connecting rod 112 and push rod 130 to reciprocate, thereby driving the piston 131 to reciprocate. This changes 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, a negative pressure is formed on the left side of the high-pressure pipe 126, and the gas in the top bridge-shaped area 122 flows through the left side conduit 12... One-way valve 125 of 4 enters the high-pressure pipe 126. When piston 131 moves to the left, the gas in the left side of the high-pressure pipe 126 is compressed and discharged through one-way valve 125 of the side guide 124 at the bottom of the left side (the same applies to the right side of the high-pressure pipe 126). Since the bridge-shaped area 122 is connected to the side guide 124, the natural gas discharged through the side guide 124 preferentially fills the bottom bridge-shaped area 122. Due to the establishment of the bridge-shaped area 122, the "pulse impact" during gas intake (such as occasional fluctuations in associated gas pressure at the wellhead) can be offset, avoiding direct impact of high-pressure gas flow on the side guide 124 and high-pressure pipe 126, which would cause a sudden increase or decrease in compression pressure. At the same time, it can also avoid uneven gas distribution in the high-pressure pipe 126 caused by unilateral gas intake, thereby preventing piston 131 from being deflected by force and aggravated wear. Meanwhile, during the pressurization process, anti-sulfur lubricating oil can be injected through the oil inlet channel 127 to meet the requirements of natural gas pressurization for the lubrication system and avoid H2S causing the lubricating oil to deteriorate.

[0043] When carrying out ammonia pressurization projects (which require multi-source air intake to adapt to the environment for pressurization, such as recovering ammonia from industrial exhaust gas), the second compression section 140 is equipped with a mixing zone 142, a feed inlet 143, a feed inlet 2 144, and an air exchange port 145. The feed inlet 143 can be connected to low-concentration ammonia exhaust gas (5%-15%), the feed inlet 2 144 can be connected to high-concentration ammonia exhaust gas (15%-30%), and the air exchange port 145 serves as a pressure balancing port, where an inert gas (nitrogen) is connected to mix the ammonia in the mixing zone 142. When the pressure in the mixing zone 142 drops suddenly (such as when the feed is interrupted), nitrogen can be added to prevent air backflow (there is a risk of explosion when air and ammonia are mixed). At the same time, the air exchange port 145 can discharge trace amounts of residual air in the mixing zone 142. The design of the mixing zone 142 can also prevent local gas accumulation and reduce the risk of poisoning after leakage. Its operation is similar to that of the first compression section 120.

[0044] When performing ultra-high pressure pressurization projects using carbon dioxide and hydrogen, the combined compression unit 160 forms a dual compression channel through compression channel two 180 and compression channel three 181 to achieve multi-stage compression. Specifically, low-pressure carbon dioxide gas is connected to the outside through the top inlet four 164, and the carbon dioxide gas pressure in the top exhaust channel 162 is maintained through the top inlet three 163. After being pressurized by two sets of one-way valves three 167 and piston three 183, the carbon dioxide gas is discharged from the bottom exhaust channel 162 through the end of the ventilation port two 165. The medium-pressure carbon dioxide gas discharged from the ventilation port two 165 is introduced into the top inlet five 172 of the fourth cylinder 171. At the same time, carbon dioxide gas is connected to the outside through the top inlet six 173 to maintain the medium-pressure environment at the top of the fourth cylinder 171. Then, piston three 183 can drive piston four 185 to move synchronously, thereby enabling secondary pressurization of the medium-pressure carbon dioxide gas in the fourth cylinder 171, thus forming high-pressure carbon dioxide gas and completing the ultra-high pressure pressurization project.

[0045] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0046] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

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 inner walls of 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); 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 areas (122), the left ends of the bridge type areas (122) on the top are fixedly installed with side guide pipes (124), the right ends of the bridge type areas (122) on the bottom are fixedly installed with side guide pipes (124), 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 through the first cylinder body (121), and the inner wall of the first cylinder body (121) is fixedly installed with a high-pressure pipe (126); The second compression part (140) comprises a second cylinder body (141), the top and bottom inner walls of the second cylinder body (141) are provided with gas mixing areas (142), the top and bottom outer walls of the second cylinder body (141) are provided with first feeding ports (143), four groups of first feeding ports (143) are in communication with the corresponding gas mixing areas (142), the top and bottom outer walls of the second cylinder body (141) are provided with second feeding ports (144), two groups of second feeding ports (144) are in communication with the corresponding gas mixing areas (142), the top and bottom side walls of the second cylinder body (141) are provided with first gas exchange ports (145), and the two groups of first gas exchange ports (145) are in communication with the corresponding gas mixing areas (142). The combined compression part (160) comprises 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 (164), two groups of the four (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 (163), two groups of the three (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 (165), two groups of the two (165) are in communication with the corresponding exhaust passages (162) inside, the inner wall of the middle 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), and the exhaust passage (162) is in communication with the compression passage two (180) inside through the one-way valve three (167), the outer wall of the middle 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; The establishment of the bridge type area (122) can offset the pulse impact when the gas is inhaled, avoid the direct impact of the high-pressure gas flow on the side guide pipe (124) and the high-pressure pipe (126), cause the sudden rise or drop of the compression pressure, and also avoid the uneven distribution of the gas in the high-pressure pipe (126) caused by one-sided gas intake; the first feeding port (143) is connected with low-concentration ammonia tail gas, the second feeding port (144) is connected with high-concentration ammonia tail gas, the first gas exchange port (145) is connected with inert gas as a pressure balance port, so that the inert gas is mixed in the mixing area (142), and when the pressure in the mixing area (142) suddenly drops, nitrogen can be supplemented to prevent air backflow.

2. A small power high speed compressor head according to claim 1, characterized in that, The outer sides of the middle of the two groups of bridge type areas (122) are provided with top guide ports (123), the bottom pipe openings of the side guide pipes (124) are fixedly installed with one-way valves one (125), and the one-way valves one (125) are located outside the intersection of the side guide pipes (124) and the bridge type areas (122), the outer wall of the high-pressure pipe (126) is provided with four groups of gas guide holes (128), and is in communication with the bottoms of the corresponding side guide pipes (124), respectively, the top of the first cylinder (121) is provided with an oil inlet passage one (127), and the oil inlet passage one (127) penetrates the top of the high-pressure pipe (126).

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

4. A small power high speed compressor head according to claim 1, characterized in that, The second cylinder body (141) middle part inner wall is provided with a compression channel one (150), the second cylinder body (141) top is provided with an oil inlet channel two (146), and the oil inlet channel two (146) is in communication with the compression channel one (150) inside, the gas mixing area (142) both ends bottom is fixedly installed with one-way valve two (147), and the gas mixing area (142) is communicated with the compression channel one (150) inside through the one-way valve two (147).

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

6. A small power high speed compressor head according to claim 1, characterized in that, The fourth cylinder body (171) middle part inner wall is provided with a compression channel three (181), the fourth cylinder body (171) top and bottom outer wall are provided with feed inlet five (172), the fourth cylinder body (171) top and bottom outer wall are provided with feed inlet six (173), and the feed inlet six (173) is communicated with the feed inlet five (172) on the same side, the fourth cylinder body (171) both ends inner wall is fixedly installed with one-way valve four (174), and the feed inlet five (172) is communicated with the compression channel three (181) through the one-way valve four (174).

7. A small power high speed compressor head according to claim 6, characterized in that, The compression channel two (180) inner wall sealing sliding installation piston three (183), the piston three (183) end wall fixedly installed push rod three (182), and push rod three (182) sealingly penetrates the third cylinder body (161), the push rod three (182) end wall and the corresponding inner connecting rod (112) end wall of connecting arm (110) are fixedly connected, the valve direction of the two groups of one-way valve three (167) is opposite, the compression channel three (181) inner wall sealing sliding installation piston four (185), the piston four (185) end wall fixedly installed push rod four (184), and the push rod four (184) end wall and the other side end wall of piston three (183) are fixedly connected, the valve direction of the two groups of one-way valve four (174) is opposite.

Images