A non-condensable gas removal device for hydrocarbon liquid tank trucks based on C4 deep processing

Abstract

This invention belongs to the field of non-condensable gas removal devices, and specifically discloses a non-condensable gas removal device for hydrocarbon liquid tank trucks based on C4 deep processing. It addresses the problem that some gas flows back into the tank truck with the hydrocarbon liquid during gas separation. The device includes a mounting base, on which a cylinder and a storage tank are fixedly connected. A separation cylinder is fixedly connected to the bottom of the cylinder. A through hole is provided on the lower side of the separation cylinder. A liquid guide pipe is connected to the through hole on a guide shell. A gas guide pipe connected to the storage tank is connected to the separation cylinder. A sliding plate is slidably connected to the through hole of the separation cylinder for sealing. This invention uses the sliding plate to seal the through hole of the separation cylinder, causing the hydrocarbon liquid to accumulate to a certain depth in the separation cylinder before transferring to the tank truck. This ensures that some hydrocarbon liquid remains in the separation cylinder at all times, preventing non-condensable gas from flowing back into the tank truck with the hydrocarbon liquid and affecting the gas-liquid separation efficiency of the device.

Description

Technical Field

[0001] This invention belongs to the field of non-condensable gas removal devices, and in particular discloses a non-condensable gas removal device for hydrocarbon liquid tank trucks based on deep processing of C4 hydrocarbons. Background Technology

[0002] Hydrocarbon tank trucks are specialized transport vehicles used to transport liquefied hydrocarbons, which are widely used in industrial production and civilian applications as important energy sources and chemical raw materials. During the transportation of liquefied hydrocarbons via tank trucks, a certain amount of non-condensable gases often remain inside the truck. These non-condensable gases are mainly composed of light hydrocarbon gases and other non-hydrocarbon gases. These non-condensable gases occupy space inside the tank truck, reducing the loading capacity of the liquefied hydrocarbons and thus decreasing transportation efficiency. Therefore, it is necessary to remove the non-condensable gases before transporting liquefied hydrocarbons. Existing non-condensable gas removal devices typically employ steps such as air extraction, gas-liquid separation, and gas purification to effectively remove non-condensable gases and ensure the safe transport of liquefied hydrocarbons. For high-quality transportation, during the gas-liquid separation process of the non-condensable gas removal device, the gas extracted from the tanker is separated into non-condensable gas and hydrocarbon liquid. The non-condensable gas is stored separately, while the hydrocarbon liquid is injected back into the tanker by a pressurized conveying device. However, during the process of the pressurized conveying device injecting the separated hydrocarbon liquid back into the tanker, the pressurized conveying device cannot accurately determine the total amount of separated hydrocarbon liquid. This can easily lead to some of the separated non-condensable gas being injected back into the tanker by the pressurized conveying device, resulting in gas loss and affecting the separation efficiency of the gas-liquid separation device. At the same time, the gas flowing back into the tanker occupies some space inside the tank, reducing the loading capacity of the tanker and lowering the transportation efficiency of the tanker. Summary of the Invention

[0003] To address the drawback that some gas flows back into the tanker truck with the hydrocarbon liquid during gas separation, this invention provides a non-condensable gas removal device for hydrocarbon liquid tankers based on deep processing of C4 hydrocarbons.

[0004] The technical solution is: a non-condensable gas removal device for hydrocarbon liquid tank trucks based on C4 deep processing, comprising a mounting base, the mounting base being installed on the tank truck, a cylinder and a storage tank being fixedly connected to the mounting base, an extraction port being provided on the tank body of the tank truck, a valve being provided at the extraction port on the tank body, a connecting shell being provided at the extraction port on the tank body, a connecting ring being rotatably connected to the connecting shell, a connecting pipe being rotatably connected to the connecting ring, a rotating shell being rotatably connected to the upper side of the cylinder, a circular shell communicating with the rotating shell being rotatably connected to the rotating shell, the circular shell communicating with the connecting pipe, a guide shell being fixedly connected to the rotating shell and communicating with the rotating shell, and a bottom of the cylinder being fixedly connected to... A separation cylinder is rotatably connected to the guide shell, and the separation cylinder communicates with the guide shell. A mirrored through hole is provided on the lower side of the separation cylinder, and the mirrored through hole on the separation cylinder is connected to a liquid guide pipe. A pressurized conveying device is provided on the mounting base, and the liquid guide pipe is connected to the upper part of the tank truck body through the pressurized conveying device. The liquid guide pipe penetrates the cylinder. A gas guide pipe connected to the storage tank is provided on the lower side of the separation cylinder. A sliding plate that is slidably connected to the through hole of the separation cylinder and cooperates with it for sealing is provided. A cooling mechanism for condensing non-condensable gas is provided on the cylinder. A control mechanism for separating hydrocarbon liquid is fixed to the bottom of the cylinder.

[0005] As a preferred embodiment of the present invention, the upper part of the flow guide shell is provided with circumferentially distributed straight pipes, the lower part of the flow guide shell is provided with a cylindrical shell, and a mirror fixed pipe is provided inside the straight pipe of the flow guide shell. The inner diameter of the fixed pipe is smaller as it gets closer to the center in the vertical direction, which is used to collect non-condensable gas and rapidly liquefy the hydrocarbon liquid inside.

[0006] As a preferred embodiment of the present invention, the bottom surface of the separation cylinder is frustum-shaped, and the top of the frustum-shaped part of the separation cylinder is connected to the gas guide pipe for separating non-condensable gas and hydrocarbon liquid.

[0007] As a preferred embodiment of the present invention, the cooling mechanism includes a motor, which is fixedly connected to the upper side of the cylinder. The output shaft of the motor is fixedly connected to the rotating shell. A cooler is provided on the upper side of the cylinder. The connecting pipe passes through the cooler. A first guide pipe connected to the cooler is fixedly connected inside the cylinder. The first guide pipe penetrates the cylinder and is spirally distributed inside the cylinder. Coolant is injected into the first guide pipe.

[0008] As a preferred embodiment of the present invention, the control mechanism includes a fixed cylinder, which is fixedly connected to the bottom of the cylindrical body. A mirrored piston rod is slidably connected inside the fixed cylinder, and a spring is fixedly connected between the piston rod and the fixed cylinder. A first guide pipe communicating with the separation cylinder is connected to the middle of the fixed cylinder. A mirrored baffle is slidably connected to the upper end of the gas guide pipe, and the mirrored baffles are all in a sealing cooperation with the gas guide pipe. The baffles are fixedly connected to the adjacent piston rod. A liquid level detection component for detecting the amount of hydrocarbon liquid accumulated inside the separation cylinder is provided inside the separation cylinder. A mirrored delayed drainage component is provided on the outer wall of the separation cylinder, and the delayed drainage component is used to control the discharge of hydrocarbon liquid inside the separation cylinder.

[0009] As a preferred embodiment of the present invention, the liquid level detection assembly includes a first hydraulic cylinder, which is fixedly connected to the separation cylinder. A sliding rod is slidably connected to the through hole of the separation cylinder via a support plate. A tension spring is fixedly connected between the sliding rod and the separation cylinder. A float is fixedly connected to the upper side of the sliding rod. The telescopic end of the first hydraulic cylinder is fixedly connected to the float on the sliding rod. Hydraulic oil is injected into the first hydraulic cylinder.

[0010] As a preferred embodiment of the present invention, the delayed drainage assembly includes a second hydraulic cylinder, which is fixedly connected to the outer wall of the separation cylinder. The second hydraulic cylinder is connected to a second guide pipe that is connected to an adjacent first hydraulic cylinder. The second guide pipe is inserted into the separation cylinder. A connecting plate is fixedly connected to the telescopic end of the second hydraulic cylinder. A tension spring is fixedly connected between the connecting plate and the adjacent sliding plate. Each of the mirror-image sliding plates is fixedly connected to a sliding frame that slides to limit the corresponding baffle. Hydraulic oil is injected into both the second hydraulic cylinder and the second guide pipe.

[0011] As a preferred embodiment of the present invention, a connecting mechanism is further included. The connecting mechanism is disposed on the connecting shell and is used for quickly positioning and aligning the air extraction holes of the connecting shell and the tanker body. The connecting mechanism includes circumferentially distributed connecting slide plates, each of which is slidably connected to the side wall of the connecting shell. Each of the circumferentially distributed connecting slide plates is fixedly connected to the connecting shell with a tension spring. A fixing plate is fixedly connected to the opposite end of each of the circumferentially distributed connecting slide plates. The lower side of the fixing plate is provided with an inclined surface that presses against the edge of the air extraction hole of the tanker body. The side wall of the connecting shell is provided with threads. The connecting shell is threadedly connected to a rotating ring that is slidably connected to the connecting ring. The rotating ring is rotatably connected to a connecting frame that is slidably connected to the connecting shell. The connecting frame is provided with circumferentially distributed limiting blocks. The connecting slide plates are provided with grooves that press against adjacent limiting blocks. An auxiliary fixing mechanism is provided at the end of the connecting pipe near the connecting ring to enhance the tightness of the fit between the connecting shell and the air extraction hole of the tanker body.

[0012] As a preferred embodiment of the present invention, the cross-section of the limiting block is a right-angled triangle, the shape of the groove on the connecting slide plate is the same as the shape of the cross-section of the limiting block, and the inclined surface of the limiting block is pressed into fit with the inclined surface of the corresponding groove on the connecting slide plate.

[0013] As a preferred embodiment of the present invention, the auxiliary fixing mechanism includes a pressure measuring cylinder, which is fixedly connected to one end of the connecting pipe near the connecting ring. The pressure measuring cylinder communicates with the connecting pipe. A sliding block is slidably connected inside the pressure measuring cylinder. A spring is fixedly connected between the sliding block and the pressure measuring cylinder. A second guide pipe is connected to the side of the pressure measuring cylinder away from the connecting pipe. A cavity is provided inside the fixing plate. The cavities of the fixing plate distributed circumferentially communicate with the second guide pipe. An extrusion plate that is squeezed into the air extraction port of the tank truck body is slidably connected inside the cavity of the fixing plate. Hydraulic oil is injected into the side of the sliding block in the pressure measuring cylinder away from the connecting pipe and into the second guide pipe.

[0014] The beneficial effects of the present invention are: 1. The present invention uses a sliding plate to block the through hole of the separation cylinder, so that the hydrocarbon liquid in the separation cylinder accumulates to a certain depth before being transferred into the tank truck, so that a portion of the hydrocarbon liquid is always retained in the separation cylinder, avoiding non-condensable gas from flowing back into the tank truck with the hydrocarbon liquid and affecting the gas-liquid separation efficiency of the device.

[0015] 2. This invention uses the sliding frame in the delayed drainage assembly to squeeze and limit the sliding plate, combined with the baffle to block and control the gas guide pipe, to achieve the purpose of controlling the discharge speed of non-condensable gas in the separation cylinder, so as to keep the pressure of non-condensable gas in the separation cylinder stable and avoid the situation where the pressure in the separation cylinder is too low, resulting in the backflow of hydrocarbon liquid in the liquid guide pipe.

[0016] 3. The present invention, through the compression and limiting of the connecting slide plate and fixing plate in the connecting mechanism with the vent hole of the tank truck, enables the connecting shell and the vent hole of the tank truck to be quickly and stably aligned and connected, thus shortening the time for the device to complete the removal of non-condensable gas in a tank truck.

[0017] 4. By moving the position of the extrusion plate in the pressure control mechanism, the present invention transforms the pressure of the gas in the connecting pipe into the extrusion force between the connecting shell and the vent hole of the tank truck body, making the connection between the connecting shell and the vent hole of the tank truck body tighter, enhancing the sealing performance at the connection between the connecting shell and the vent hole of the tank truck body, and reducing the risk of gas leakage. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the parts at the mounting base and storage tank of the present invention;

[0020] Figure 3This is a three-dimensional structural diagram of the connecting ring and connecting pipe parts of the present invention;

[0021] Figure 4 This is a cross-sectional view of the rotating shell and annular shell components of the present invention.

[0022] Figure 5 This is a cross-sectional view of the flow guide shell and separation cylinder of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the parts at the liquid guide tube and gas guide tube of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the parts at the first and second hydraulic cylinders of the present invention;

[0025] Figure 8 This is a three-dimensional structural diagram of the parts at the fixing cylinder and baffle of the present invention;

[0026] Figure 9 This is a three-dimensional structural diagram of the piston rod and the first guide tube of the present invention;

[0027] Figure 10 This is a three-dimensional structural diagram of the part connecting the sliding plate and the fixing plate of the present invention;

[0028] Figure 11 This is a cross-sectional view of the rotating ring and connecting frame, etc., of the present invention;

[0029] Figure 12 This is a three-dimensional structural diagram of the pressure measuring cylinder and sliding block components of the present invention.

[0030] Reference numerals: 2-Mounting base, 3-Cylinder, 4-Storage tank, 5-Connecting shell, 6-Connecting ring, 7-Connecting pipe, 8-Rotating shell, 9-Circular ring shell, 10-Guide shell, 11-Separation cylinder, 12-Liquid guide pipe, 13-Gas guide pipe, 14-Sliding plate, 201-Motor, 202-First guide pipe, 301-Fixed cylinder, 302-Piston rod, 303-First guide pipe, 304-Baffle, 401-First hydraulic cylinder, 402-Sliding rod, 501-Second hydraulic cylinder, 502-Second guide pipe, 503-Connecting plate, 504-Sliding frame, 601-Connecting slide plate, 602-Fixed plate, 603-Rotating ring, 604-Connecting frame, 605-Limiting block, 701-Pressure measuring cylinder, 702-Sliding block, 703-Second guide pipe, 704-Squeezing plate. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-12The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: In the process of removing non-condensable gases from a hydrocarbon tanker truck using an existing non-condensable gas removal device, during the condensation and gas-liquid separation of the gas, the hydrocarbon liquid condenses and precipitates from the gas and is guided back into the tanker truck by the gas separation device. However, some gas will enter the tanker truck along with the hydrocarbon liquid, which reduces the separation efficiency of the gas-liquid separation device. At the same time, the gas will occupy the space inside the tanker truck, reducing the loading capacity of the tanker truck.

[0033] A non-condensable gas removal device for hydrocarbon liquid tank trucks based on C4 deep processing is described below. Figures 1-7As shown, the system includes a mounting base 2, which is mounted on a tank truck. A cylinder 3 and a storage tank 4 are fixedly connected to the mounting base 2. The tank truck body is equipped with a pressure control device for injecting inert gas. The tank truck body has an extraction port with a valve. A connecting shell 5 is located at the extraction port of the tank truck body, connected to the extraction port via bolts. A connecting ring 6 is rotatably connected to the upper side of the connecting shell 5, and a connecting pipe 7 is rotatably connected to the upper side of the connecting ring 6. A rotating shell 8, T-shaped, is rotatably connected to the upper side of the rotating shell 3. An annular shell 9 is rotatably connected to the rotating shell 8, maintaining constant communication between them. Connecting pipe 7 is connected to the rotating shell 8. A guide shell 10 is fixedly connected to the lower side of the rotating shell 8. The guide shell 10 is connected to the rotating shell 8. The upper part of the guide shell 10 is provided with several straight pipes distributed circumferentially. The lower part of the guide shell 10 is a cylindrical shell. Two fixed pipes that are mirror images of each other are provided inside the straight pipes of the guide shell 10. The inner diameter of the fixed pipes is smaller as they approach the center in the vertical direction. This is used to collect non-condensable gas and rapidly liquefy the hydrocarbon liquid inside. Through the centrifugal state of the guide shell 10, combined with the shape of the fixed pipes inside the straight pipes of the guide shell 10, the separation efficiency of non-condensable gas and hydrocarbon liquid in this device is further accelerated. A separation cylinder 11 is fixedly connected to the bottom of the cylinder 3. The separation cylinder 11 is rotatably connected to the guide shell 10 and is connected to the guide shell 10. The bottom surface of the separation cylinder 11 is... The separator 11 is frustum-shaped. The top of the frustum inside the separator 11 is connected to the gas guide pipe 13 for separating non-condensable gas and hydrocarbon liquid. The non-condensable gas is discharged from the upper side of the frustum inside the separator 11, while the hydrocarbon liquid accumulates around the frustum inside the separator 11. The lower side of the separator 11 has two mirror-image through holes, which are connected to a liquid guide pipe 12. A pressurized conveying device is installed on the mounting base 2. The liquid guide pipe 12 is connected to the upper part of the tank truck body through the pressurized conveying device. The pressurized conveying device only extracts the hydrocarbon liquid in the separator 11 and injects it back into the tank truck body when the liquid guide pipe 12 is connected to the separator 11. The liquid guide pipe 12 penetrates the cylinder 3, and the lower side of the cylinder 3 is connected to the gas guide pipe 13. The gas guide pipe 13 is connected to the storage tank 4, which is used to store the separated gas. The non-condensable gas is purified and stored. A sliding plate 14 is slidably connected to the through hole of the separator 11. The sliding plate 14 is sealed and cooperates with the corresponding through hole of the separator 11. Initially, the sliding plate 14 completely seals the corresponding through hole of the separator 11. The hydrocarbon liquid condensed from the extracted gas is temporarily accumulated and stored in the separator 11. A cooling mechanism for condensing non-condensable gas is provided on the cylinder 3. A control mechanism for separating hydrocarbon liquid is fixed to the bottom of the cylinder 3. By sealing the through hole of the separator 11 with the sliding plate 14, the hydrocarbon liquid in the separator 11 is transferred to the tank truck only after it has accumulated to a certain depth. This ensures that the separator 11 always stores a certain depth of hydrocarbon liquid, preventing non-condensable gas from entering the tank truck with the hydrocarbon liquid and causing a decrease in the gas-liquid separation efficiency of the device.

[0034] Please refer to Figure 2 and Figure 4 As shown, the cooling mechanism includes a motor 201, which is fixed to the upper side of the cylinder 3. The output shaft of the motor 201 is fixed to the rotating shell 8. A cooler is installed on the upper side of the cylinder 3, and a connecting pipe 7 passes through the cooler. The cooler cools the gas injected into the rotating shell 8, facilitating the rapid condensation and precipitation of hydrocarbon liquid in the gas in subsequent processes. A first guide pipe 202 is fixed inside the cylinder 3 and connected to the cooler. The first guide pipe 202 penetrates the cylinder 3 and is filled with coolant. The first guide pipe 202 is spirally distributed inside the cylinder 3 to rapidly reduce the temperature inside the cylinder 3 and ensure the stability of the ambient temperature of the guide shell 10 during the operation of this device. The rotating shell 8 drives the guide shell 10 to rotate, which, in conjunction with the cooling operation of the first guide pipe 202, achieves the purpose of condensing the gas to separate the non-condensable gas and the hydrocarbon liquid.

[0035] Please refer to Figures 5-9 As shown, the control mechanism includes a fixed cylinder 301, which is fixed to the bottom of the cylinder 3. Two piston rods 302, mirror images of each other, are slidably connected inside the fixed cylinder 301. A spring is fixed between the piston rods 302 and the fixed cylinder 301. A first guide tube 303 is connected to the middle of the fixed cylinder 301 and is connected to the separating cylinder 11. The distance between the two piston rods 302 is controlled according to the pressure of the non-condensable gas inside the separating cylinder 11. Two baffles 304 are slidably connected to the upper end of the gas guide tube 13. Both baffles 304... In conjunction with the sealing of the gas guide pipe 13, the position of the baffle 304 is moved to control the size of the non-condensable gas flow area in the gas guide pipe 13, so that the non-condensable gas pressure in the separation cylinder 11 remains stable, and the gas pressure decreases during the process of gas condensing into non-condensable gas, which would cause the hydrocarbon liquid in the liquid guide pipe 12 to flow back. The baffle 304 is fixedly connected to the adjacent piston rod 302. The separation cylinder 11 is equipped with a liquid level detection component for the amount of hydrocarbon liquid accumulated in it. The outer wall of the separation cylinder 11 is equipped with a mirror-image delayed liquid discharge component, which is used to control the discharge of hydrocarbon liquid in the separation cylinder 11.

[0036] Please refer to Figures 5-7 As shown, the liquid level detection assembly includes a first hydraulic cylinder 401, which is fixedly connected to the separator 11. A sliding rod 402 is slidably connected to the through hole of the separator 11 via a support plate. The support plate is located in the corresponding through hole of the separator 11. A tension spring is fixedly connected between the sliding rod 402 and the separator 11. A float is fixedly connected to the upper side of the sliding rod 402 for detecting the depth of hydrocarbon liquid accumulated in the separator 11. The telescopic end of the first hydraulic cylinder 401 is fixedly connected to the float on the sliding rod 402. The first hydraulic cylinder 401 is filled with hydraulic oil.

[0037] Please refer to Figure 6 and Figure 7As shown, the delayed drainage assembly includes a second hydraulic cylinder 501, which is fixed to the outer wall of the separator 11. The second hydraulic cylinder 501 is connected to a second guide pipe 502, which is connected to an adjacent first hydraulic cylinder 401. The second guide pipe 502 is inserted into the separator 11. A connecting plate 503 is fixed to the telescopic end of the second hydraulic cylinder 501. A tension spring is fixed between the connecting plate 503 and the adjacent sliding plate 14. The buoyancy generated when half of the float on the upper side of the sliding rod 402 enters the hydrocarbon liquid is greater than that generated by the sliding rod 402. The sum of the tension of the connecting spring and the tension of the spring connected to the connecting plate 503 is such that when the hydrocarbon liquid submerges half of the float, the float moves upward as the hydrocarbon liquid level rises. When the float is completely submerged in the hydrocarbon liquid, neither the tension spring connected to the sliding rod 402 nor the tension spring connected to the connecting plate 503 is stretched to its limit, and no irreversible deformation will occur. This is used to allow the sliding plate 14 to move after a delay after the extension end of the second hydraulic cylinder 501 has moved. The buoyancy generated by the float in the hydrocarbon liquid on the sliding rod 402 is greater than the maximum tension of the tension spring connected to the connecting plate 503 and the tension of the spring connected to the connecting plate 503. The sum of the maximum tensions of the springs connected to the hydraulic cylinder 401 is used to stretch the corresponding connecting plate 503 and the spring at the corresponding first hydraulic cylinder 401 when the float moves up and down with the hydrocarbon liquid. The elastic coefficient of the spring connected to the piston rod 302 is greater than that of the spring connected to the connecting plate 503, which is used to ensure that the piston rod 302 can be pressed and fixed by the corresponding baffle 304 to the corresponding sliding plate 14 and the corresponding sliding frame 504. Both sliding plates 14 are fixedly connected to the sliding frame 504, and the sliding frame 504 is pressed and engaged with the corresponding baffle 304. Initially, the two sliding plates 14 and the sliding frame 504 are separated by a small distance, so that there is a partial communication area in the liquid guide pipe 12. This avoids the situation where most of the gas extracted by the tank truck turns into hydrocarbon liquid during the initial operation of the device, and the hydrocarbon liquid enters the gas guide pipe 13. The second hydraulic cylinder 501 and the second guide pipe 502 are filled with hydraulic oil. The sliding frame 504 squeezes the corresponding sliding plate 14, so that the hydrocarbon liquid is not injected back before the non-condensable gas pressure in the separation cylinder 11 reaches the set value, thereby reducing the possibility of hydrocarbon liquid backflow in the liquid guide pipe 12.

[0038] When using this device to remove non-condensable gases from a tank truck, the operator installs the device on the right side of the tank truck, aligns the connecting shell 5 with the vent hole of the tank truck body, and connects them with bolts. Then, the operator starts the cooler, motor 201, and pressurized conveying device on the cylinder 3. Simultaneously, the operator opens the valve of the vent hole of the tank truck body. After the cooler on the cylinder 3 starts, the gas above the hydrocarbon liquid in the tank truck body enters the annular shell 9 through the vent hole, connecting shell 5, connecting ring 6, connecting pipe 7, and cooler. The pressure control device on the tank truck body injects inert gas into the tank truck body to ensure the stability of the pressure inside the tank truck body. The cooler compresses and cools the gas passing through it, facilitating the removal of non-condensable gases from the gas. The hydrocarbon liquid rapidly condenses and precipitates in the subsequent process. The gas inside the annular shell 9 enters several straight pipes on the upper side of the guide shell 10 through the rotating shell 8. The gas flows downward in the straight pipes and passes through two fixed pipes. Since the inner diameter of the fixed pipes gradually decreases and then gradually increases from top to bottom, the gas density increases when the gas passes through the section with the smaller inner diameter of the fixed pipe. The hydrocarbon liquid in the gas rapidly condenses and precipitates. The condensed hydrocarbon liquid and gas enter the lower separation cylinder 11 along the straight pipes and fixed pipes of the guide shell 10. The coolant in the first guide pipe 202 is continuously circulated by the cooler, continuously reducing the temperature inside the cylinder 3, so that the cylinder 3 is in a stable low temperature state, which facilitates the stable condensation and precipitation of the hydrocarbon liquid in the gas flowing in the guide shell 10.

[0039] When motor 201 starts, the output shaft of motor 201 drives the rotating shell 8 to rotate, and the rotating shell 8 drives the guide shell 10 to rotate synchronously. The annular shell 9 does not move, and the rotating shell 8 and the annular shell 9 rotate relative to each other. The separation cylinder 11 inside the cylinder 3 does not rotate, and the guide shell 10 and the separation cylinder 11 rotate relative to each other. Through the rotation of the guide shell 10, the hydrocarbon liquid in the condensed gas in the upper straight cylinder is thrown to the side wall of the straight cylinder under centrifugal force, which further improves the speed of separating non-condensable gas and hydrocarbon liquid in this device. Since the inner bottom surface of the separation cylinder 11 is a frustum, all the hydrocarbon liquid entering the separation cylinder 11 converges around its inner frustum. The gas entering the separation cylinder 11 is non-condensable gas. The non-condensable gas passes through the upper part of the inner frustum of the separation cylinder 11. The non-condensable gas enters the gas guide pipe 13 from the side, and then enters the storage tank 4 for gas purification and storage. Since the two sliding plates 14 initially block the two through holes on the lower side of the separation cylinder 11, the hydrocarbon liquid is stored in the separation cylinder 11. The liquid level of the hydrocarbon liquid in the separation cylinder 11 gradually rises. At the same time, the two baffles 304 initially block the gas guide pipe 13, and the gas entering the separation cylinder 11 accumulates. The gas pressure in the separation cylinder 11 increases. By blocking the through holes of the separation cylinder 11 through the sliding plates 14, the hydrocarbon liquid in the separation cylinder 11 accumulates to a certain depth before being transferred into the tank truck. This ensures that a portion of the hydrocarbon liquid is always retained in the separation cylinder 11, preventing the non-condensable gas from flowing back into the tank truck with the hydrocarbon liquid and affecting the gas-liquid separation efficiency of this device.

[0040] As the hydrocarbon liquid continuously accumulates in the separator 11, the liquid level rises until it submerges half of the float on the sliding rod 402. Taking the right-side sliding rod 402 as an example, the float on the sliding rod 402 moves upward with the liquid level, pulling the tension spring connected to it. The upward movement of the float on the sliding rod 402 causes the telescopic end of the first hydraulic cylinder 401 to retract. Hydraulic oil in the second hydraulic cylinder 501 flows into the first hydraulic cylinder 401 through the second guide pipe 502. The telescopic end of the second hydraulic cylinder 501 extends and drives the connecting plate 503 to move to the right. The tension spring between the sliding plate 14 and the connecting plate 503 is stretched, causing the sliding plate 14 to move a small distance to the right. A partial connection area is created in the guide pipe 12, and the hydrocarbon liquid in the separator 11 slowly flows into the guide pipe 12. Subsequently, the baffle 304... As the limiting connecting plate 503 and sliding plate 14 continue to move, non-condensable gas accumulates in the separating cylinder 11, increasing the gas pressure inside the separating cylinder 11. Some of the non-condensable gas inside the separating cylinder 11 flows into the middle of the fixed cylinder 301 through the first guide pipe 303. When the pressure inside the separating cylinder 11 reaches the set value, the two piston rods 302 inside the fixed cylinder 301 drive the two baffles 304 away from each other. The piston rods 302 compress the spring connected to them, releasing the blockage of the air guide pipe 13. At the same time, the movement of the baffles 304 releases the pressure of the sliding frame 504 on the sliding plate 14. At this time, the sliding plate 14 continues to move to the right under the tension of the tension spring. The through hole of the separating cylinder 11 is fully connected to the liquid guide pipe 12. The pressurized conveying device extracts the hydrocarbon liquid accumulated in the separating cylinder 11 through the liquid guide pipe 12. Finally, the hydrocarbon liquid is injected back into the upper part of the tanker by the pressurized conveying device.

[0041] During the process of hydrocarbon liquid flowing back into the tank truck body in the separator 11, as the amount of hydrocarbon liquid in the separator 11 decreases, the buoyancy of the float on the sliding rod 402 decreases. Under the tension of the connected spring, the sliding rod 402 moves downward to reset. The telescopic end of the first hydraulic cylinder 401 extends, and the hydraulic oil in the second guide pipe 502 flows in the reverse direction. The telescopic end of the second hydraulic cylinder 501 drives the sliding plate 14 to gradually reset through the connecting plate 503 and the spring. The sliding plate 14 re-seals the through hole of the separator 11, thereby ensuring that a portion of hydrocarbon liquid is always retained in the separator 11. As the non-condensable gas in the separator 11 is discharged, the separation... As the gas pressure inside cylinder 11 decreases, the two piston rods 302 move closer to each other under the elastic force of the connected springs, controlling the reduction of the flow area inside the gas guide pipe 13. This keeps the gas pressure inside the separation cylinder 11 stable, preventing the reverse flow of hydrocarbon liquid in the liquid guide pipe 12 when hydrocarbon liquid is released from the gas and the gas pressure inside the separation cylinder 11 decreases. This would affect the separation efficiency of the gas-liquid separation device. During the reset process of the baffle 304, the baffle 304 drives the sliding plate 14 to move to the left and reset through the sliding frame 504. The lower through hole of the separation cylinder 11 is blocked, and the separation cylinder 11 only injects hydrocarbon liquid back into the tanker tank when the internal gas pressure reaches the set value.

[0042] During the operation of this device, the gas inside the tanker is continuously extracted. The hydrocarbon liquid and non-condensable gas in the extracted gas are condensed and separated by the parts inside the cylinder 3. After the device is completed, the operator closes the valve of the tanker's extraction port, the cooler on the cylinder 3, and the motor 201. The piston rod 302 drives the baffle 304 to return to its initial position under the elastic force of the connected spring. After the bolt connection between the extraction port of the tanker and the connecting shell 5 is released, the connection between the liquid guide pipe 12 and the tanker is released, and the residual hydrocarbon liquid in the device is discharged. This completes the removal of non-condensable gas in the tanker. Finally, the device is removed.

[0043] Example 2: Before the non-condensable gas removal device is started, the extraction pipe needs to be connected to the tank truck. The existing connection method is usually a fixed connection of bolts and flanges. However, the holes of the two flanges need to be aligned in advance, and it takes a period of time to tighten the bolts. This operation process is not only complicated, but also prone to leakage due to poor fit, which causes gas leakage from the tank truck and pollutes the surrounding environment.

[0044] Based on Example 1, please refer to Figure 2 , Figure 3 , Figure 10 and Figure 11As shown, it also includes a connecting mechanism, which is disposed on the connecting shell 5. The connecting mechanism is used to quickly position and align the connecting shell 5 and the vent hole of the tank truck body. The connecting mechanism includes four circumferentially distributed connecting slide plates 601. All four connecting slide plates 601 are slidably connected to the side wall of the connecting shell 5. Each of the four connecting slide plates 601 is fixedly connected to the connecting shell 5 with a tension spring. Taking the right connecting slide plate 601 as an example, the right end of each connecting slide plate 601 is fixedly connected to a fixing plate 602. The fixing plate 602 is J-shaped, and the lower side of the fixing plate 602 is provided with an inclined surface. The inclined surface of the fixing plate 602 is pressed and engaged with the edge of the vent hole of the tank truck body to position and align the connecting shell 5 and the vent hole of the tank truck body. The side wall of the connecting shell 5 is provided with threads, and the connecting shell 5 is threadedly connected to a rotating ring 603. The rotating ring 603 is slidably connected to the connecting ring 6, so that the rotation of the rotating ring 603 drives the connecting ring 6 to rotate synchronously. Ring 6 does not move up or down. The rotating ring 603 is rotatably connected to the connecting frame 604. The connecting frame 604 is slidably connected to the connecting shell 5. The connecting frame 604 is provided with four circumferentially distributed limiting blocks 605. The connecting slide plate 601 is provided with a groove. The groove of the connecting slide plate 601 is pressed and engaged with the adjacent limiting block 605. The cross-section of the limiting block 605 is a right triangle. The shape of the groove on the connecting slide plate 601 is the same as the shape of the cross-section of the limiting block 605. The inclined surface of the limiting block 605 is pressed and engaged with the inclined surface of the corresponding groove on the connecting slide plate 601. The left end of the connecting pipe 7 is provided with an auxiliary fixing mechanism to enhance the tightness of the air extraction hole between the connecting shell 5 and the tank body. By the limiting block 605 pressing the groove of the corresponding connecting slide plate 601, the four fixing plates 602 clamp and fix the relative position of the connecting shell 5 and the air extraction hole of the tank body, achieving the purpose of rapid positioning and alignment, and shortening the time for this device to complete the removal of non-condensable gas in a tank car.

[0045] Please refer to Figures 10-12As shown, the auxiliary fixing mechanism includes a pressure measuring cylinder 701, which is fixedly connected to the left end of the connecting pipe 7 and communicates with the connecting pipe 7. A sliding block 702 is slidably connected inside the pressure measuring cylinder 701, and a spring is fixedly connected between the sliding block 702 and the pressure measuring cylinder 701. A second guide pipe 703 is connected to the right side of the pressure measuring cylinder 701. A cavity is provided inside the fixing plate 602, and the cavities of the four fixing plates 602 communicate with the second guide pipe 703. A pressing plate 704 is slidably connected inside the cavity of the fixing plate 602. The pressing plate 704 is formed by the upper side... The device consists of a rectangular plate and a cylindrical block on the lower side. The cylindrical block portion of the extrusion plate 704 is slidably connected to the cavity of the corresponding fixing plate 602. The extrusion plate 704 is extruded and fitted with the vent hole of the tank truck body. Hydraulic oil is injected into the right side of the sliding block 702 and the second guide tube 703 inside the pressure measuring cylinder 701. By moving the extrusion plate 704 at the fixing plate 602, the pressure of the gas in the connecting pipe 7 is converted into the extrusion force at the vent hole of the connecting shell 5 and the tank truck body, which increases the sealing performance at the connection between the connecting shell 5 and the vent hole of the tank truck body and reduces the possibility of gas leakage.

[0046] When this device is connected to a tank truck, the operator only needs to roughly align the connecting shell 5 with the vent hole of the tank truck body, move the connecting shell 5 downwards, and the inclined surfaces of the four fixing plates 602 press against the edge of the vent hole of the tank truck body. The four fixing plates 602 drive the corresponding connecting slide plates 601 away from each other, and the connecting slide plates 601 stretch the tension springs connected to them. When the connecting shell 5 is in contact with the surface of the vent hole of the tank truck body, the four connecting slide plates 601, under the tension of the connected springs, drive the corresponding fixing plates 602 closer to each other. The four fixing plates 602 complete the alignment and positioning of the connecting shell 5 with the vent hole of the tank truck body, and then... The operator rotates the rotating ring 603, which drives the connecting ring 6 to rotate synchronously. The connecting shell 5, connecting pipe 7, and connecting frame 604 do not rotate. During the rotation, the rotating ring 603 moves upward along the connecting shell 5. The rotating ring 603 and the connecting ring 6 slide against each other. The rotating ring 603 drives the connecting frame 604 to move upward. The inclined surface of the upper limit block 605 of the connecting frame 604 presses against the inclined surface of the groove of the corresponding connecting slide plate 601, so that the four connecting slide plates 601 drive the corresponding fixing plates 602 to move closer to each other and upward, so as to achieve a state in which the connecting shell 5 and the vent of the tanker body are accurately aligned and stably connected.

[0047] During the rotation of the rotating ring 603, when the rotating ring 603 stops rotating, it indicates that the connecting shell 5 is now connected to the vent hole of the tank truck body. At this time, the device is activated, and the above-mentioned non-condensable gas removal operation is repeated. When the gas in the tank truck body enters the connecting pipe 7, some of the gas enters the pressure measuring cylinder 701. The sliding block 702 in the pressure measuring cylinder 701 moves to the right under the push of the gas, compressing the spring connected to it. The sliding block 702 moves different distances according to the gas pressure. The hydraulic oil on the right side of the sliding block 702 in the pressure measuring cylinder 701 flows into the cavity of the four fixed plates 602 through the second guide pipe 703. The extrusion plate 704 moves upward and contacts the vent hole of the extrusion tank truck body. The extrusion pressure between the connecting shell 5 and the vent hole of the tank truck body increases, making the connecting shell 5 connected to the vent hole of the tank truck body. The sealing at the joint is enhanced. After the device is used, the operator manually closes the valve of the tank truck's vent hole. The gas in the connecting pipe 7 stops flowing. The sliding block 702 moves to the left and resets under the elastic force of the connected spring. The hydraulic oil in the second guide pipe 703 flows in the reverse direction. The four extrusion plates 704 move downward and reset. Then, the rotating ring 603 rotates in the reverse direction and resets. The connecting frame 604 drives the limiting block 605 to move downward and reset. The groove of the connecting slide plate 601 loses the extrusion of the corresponding limiting block 605. Finally, the four fixing plates 602 are pulled away from each other, so that the connecting shell 5 is separated from the vent hole of the tank truck and the connection state of the device is released. By moving the fixing plate 602, the operation of quickly aligning and fixing the connecting shell 5 with the vent hole of the tank truck is completed, which shortens the time for the device to remove non-condensable gas from a tank truck.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-condensable gas removal device for hydrocarbon liquid tank trucks based on C4 deep processing, comprising a mounting base (2), the mounting base (2) being mounted on the tank truck, a cylinder (3) and a storage tank (4) being fixedly connected to the mounting base (2), an extraction port being provided on the tank body of the tank truck, and a valve being provided at the extraction port on the tank body of the tank truck, characterized in that, It also includes a connecting shell (5), which is installed at the extraction port of the tanker body. The connecting shell (5) is rotatably connected to a connecting ring (6), and the connecting ring (6) is rotatably connected to a connecting pipe (7). A rotating shell (8) is rotatably connected to the upper side of the cylinder (3). The rotating shell (8) is rotatably connected to an annular shell (9) communicating with it. The annular shell (9) is communicating with the connecting pipe (7). A flow guide shell (10) communicating with it is fixedly connected to the rotating shell (8). A separation cylinder (11) rotatably connected to the flow guide shell (10) is fixedly connected to the bottom of the cylinder (3). The separation cylinder (11) is communicating with the flow guide shell (10). A mirrored through hole is provided on the lower side of (11). The mirrored through hole on the separation cylinder (11) is connected to a liquid guide pipe (12). A pressurized conveying device is provided on the mounting base (2). The liquid guide pipe (12) is connected to the upper part of the tank truck body through the pressurized conveying device. The liquid guide pipe (12) penetrates the cylinder (3). A gas guide pipe (13) connected to the storage tank (4) is provided on the lower side of the separation cylinder (11). A sliding plate (14) is slidably connected to the through hole of the separation cylinder (11) and is sealed therewith. A cooling mechanism for condensing non-condensable gas is provided on the cylinder (3). A control mechanism for separating hydrocarbon liquid is fixedly connected to the bottom of the cylinder (3).

2. The non-condensable gas removal device for hydrocarbon tank trucks based on C4 deep processing according to claim 1, characterized in that, The upper part of the flow guide shell (10) is provided with circumferentially distributed straight pipes, and the lower part of the flow guide shell (10) is provided with a cylindrical shell. A mirror fixed pipe is provided inside the straight pipe of the flow guide shell (10). The inner diameter of the fixed pipe is smaller as it gets closer to the center in the vertical direction, which is used to collect non-condensable gas and rapidly liquefy the hydrocarbon liquid inside.

3. The non-condensable gas removal device for hydrocarbon tank trucks based on C4 deep processing according to claim 1, characterized in that, The bottom surface of the separator (11) is frustum-shaped, and the top of the frustum inside the separator (11) is connected to the gas guide pipe (13) for separating non-condensable gas and hydrocarbon liquid.

4. The non-condensable gas removal device for hydrocarbon tank trucks based on C4 deep processing according to claim 1, characterized in that, The cooling mechanism includes a motor (201), which is fixed to the upper side of the cylinder (3). The output shaft of the motor (201) is fixed to the rotating shell (8). A cooler is provided on the upper side of the cylinder (3). The connecting pipe (7) passes through the cooler. A first guide pipe (202) connected to the cooler is fixed inside the cylinder (3). The first guide pipe (202) penetrates the cylinder (3). The first guide pipe (202) is spirally distributed inside the cylinder (3). Coolant is injected into the first guide pipe (202).

5. A non-condensable gas removal device for hydrocarbon tank trucks based on C4 deep processing according to claim 4, characterized in that, The control mechanism includes a fixed cylinder (301), which is fixed to the bottom of the cylinder (3). A mirrored piston rod (302) is slidably connected inside the fixed cylinder (301). A spring is fixed between the piston rod (302) and the fixed cylinder (301). A first guide tube (303) communicating with the separation cylinder (11) is connected to the middle part of the fixed cylinder (301). A mirrored baffle (304) is slidably connected to the upper end of the gas guide tube (13). The mirrored baffles (304) are all sealed and cooperated with the gas guide tube (13). The baffles (304) are fixed to the adjacent piston rod (302). A liquid level detection component for the accumulation of hydrocarbon liquid inside the separation cylinder (11) is provided. A mirrored delayed discharge component is provided on the outer wall of the separation cylinder (11). The delayed discharge component is used to control the discharge of hydrocarbon liquid inside the separation cylinder (11).

6. The non-condensable gas removal device for hydrocarbon tank trucks based on C4 deep processing according to claim 5, characterized in that, The liquid level detection assembly includes a first hydraulic cylinder (401), which is fixedly connected to the separation cylinder (11). A sliding rod (402) is slidably connected to the through hole of the separation cylinder (11) through a support plate. A tension spring is fixedly connected between the sliding rod (402) and the separation cylinder (11). A float is fixedly connected to the upper side of the sliding rod (402). The telescopic end of the first hydraulic cylinder (401) is fixedly connected to the float on the sliding rod (402). Hydraulic oil is injected into the first hydraulic cylinder (401).

7. A non-condensable gas removal device for hydrocarbon tank trucks based on C4 deep processing according to claim 6, characterized in that, The delayed drainage assembly includes a second hydraulic cylinder (501), which is fixed to the outer wall of the separator (11). The second hydraulic cylinder (501) is connected to a second guide pipe (502) that is connected to the adjacent first hydraulic cylinder (401). The second guide pipe (502) is inserted into the separator (11). A connecting plate (503) is fixed to the telescopic end of the second hydraulic cylinder (501). A tension spring is fixed between the connecting plate (503) and the adjacent sliding plate (14). Each mirrored sliding plate (14) is fixed to a sliding frame (504) that slides and limits the corresponding baffle (304). Hydraulic oil is injected into both the second hydraulic cylinder (501) and the second guide pipe (502).

8. The non-condensable gas removal device for hydrocarbon tank trucks based on C4 deep processing according to claim 1, characterized in that, It also includes a connecting mechanism, which is disposed on the connecting shell (5). The connecting mechanism is used to quickly position and align the connecting shell (5) and the vent hole of the tank truck body. The connecting mechanism includes circumferentially distributed connecting slide plates (601). The circumferentially distributed connecting slide plates (601) are all slidably connected to the side wall of the connecting shell (5). Each circumferentially distributed connecting slide plate (601) is fixedly connected to the connecting shell (5) with a tension spring. A fixing plate (602) is fixedly connected to the far end of each circumferentially distributed connecting slide plate (601). The lower side of the fixing plate (602) is provided with a pressing fit with the edge of the vent hole of the tank truck body. The inclined surface of the connecting shell (5) is provided with threads on its side wall. The connecting shell (5) is threadedly connected to a rotating ring (603) that is slidably connected to the connecting ring (6). The rotating ring (603) is rotatably connected to a connecting frame (604) that is slidably connected to the connecting shell (5). The connecting frame (604) is provided with circumferentially distributed limiting blocks (605). The connecting slide plate (601) is provided with a groove that is pressed and engaged with the adjacent limiting block (605). The end of the connecting pipe (7) near the connecting ring (6) is provided with an auxiliary fixing mechanism for enhancing the tightness of the connection between the connecting shell (5) and the air extraction hole of the tanker body.

9. A non-condensable gas removal device for hydrocarbon tank trucks based on C4 deep processing according to claim 8, characterized in that, The cross-section of the limiting block (605) is a right triangle. The shape of the groove on the connecting slide plate (601) is the same as the shape of the cross-section of the limiting block (605). The inclined surface of the limiting block (605) is pressed and engaged with the inclined surface of the corresponding groove on the connecting slide plate (601).

10. A non-condensable gas removal device for hydrocarbon tank trucks based on C4 deep processing according to claim 8, characterized in that, The auxiliary fixing mechanism includes a pressure measuring cylinder (701), which is fixedly connected to one end of the connecting pipe (7) near the connecting ring (6). The pressure measuring cylinder (701) communicates with the connecting pipe (7). A sliding block (702) is slidably connected inside the pressure measuring cylinder (701). A spring is fixed between the sliding block (702) and the pressure measuring cylinder (701). A second spring is connected to the side of the pressure measuring cylinder (701) away from the connecting pipe (7). The guide tube (703) has a cavity in the fixed plate (602). The cavities of the fixed plate (602) are distributed circumferentially and communicate with the second guide tube (703). The cavity of the fixed plate (602) is slidably connected to an extrusion plate (704) that is squeezed to fit the air extraction hole of the tank truck body. The side of the sliding block (702) in the pressure measuring cylinder (701) away from the connecting pipe (7) and the second guide tube (703) are filled with hydraulic oil.

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