Adsorption type natural gas intelligent filling line system

Abstract

The utility model provides an adsorption type natural gas intelligent filling line system. The adsorption type natural gas intelligent filling line system comprises a conveying assembly line, a plurality of fixing devices, a plurality of steel cylinders, a gas filling device, a vacuumizing device and a control cabinet, the gas charging device charges natural gas into the steel cylinder; the evacuating device evacuates residual natural gas in the gas charging device; the control cabinet controls the conveying frequency of the conveying assembly line, controls the conveying assembly line to convey the multiple steel cylinders filled with natural gas to the position under the gas charging device and controls the gas charging device to charge the multiple steel cylinders filled with natural gas. The control cabinet further controls the evacuating device to evacuate residual natural gas in the inflating device after the inflating device finishes inflating. And the control cabinet controls the evacuator to automatically evacuate residual natural gas in the gas filling device, so that no leakage occurs in the gas filling process, the efficiency in the filling process of the adsorption type natural gas steel cylinder is improved, no leakage occurs, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of new energy technology, and in particular to an adsorption-type natural gas intelligent filling line system. Background Art

[0002] The asymmetry between my country's natural gas production areas and major consumption regions has led to natural gas storage and transportation technology becoming a major factor restricting the development of the industry. As my country accelerates the development of the natural gas industry, safe and convenient natural gas storage and transportation technology will become a major trend in the future development of natural gas.

[0003] In the existing technology, high-pressure natural gas storage tanks have poor storage and transportation safety and are flammable and explosive during the deflation process. In addition, the filling process is inefficient, leaks may occur, and the safety risks are high.

[0004] Therefore, there is an urgent need for a device to solve the problems in the prior art. Utility Model Content

[0005] The main purpose of the utility model is to provide an adsorption-type intelligent natural gas filling line system, so as to at least solve the problems of low efficiency and leakage in the natural gas filling process in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an adsorption-type natural gas intelligent filling line system, comprising a conveying line, a plurality of fixtures, a plurality of steel cylinders, a gas filling device, an evacuation device and a control cabinet; a plurality of fixtures are equidistantly arranged on the conveying line; an adsorbent for absorbing natural gas is pre-installed in the steel cylinders, and each of the steel cylinders is correspondingly installed in one of the fixtures; the gas filling device is arranged above the conveying line, and is used to fill natural gas into the steel cylinders on the conveying line that are not filled with natural gas; the evacuation device is connected to the gas filling device, and the evacuation device is used to After the inflation of the inflation device is completed, the natural gas remaining in the inflation device is evacuated; the control cabinet is connected to the delivery line, and the control cabinet is used to control the delivery frequency of the delivery line; the control cabinet is connected to the inflation device, and the control cabinet is also used to control the delivery line to deliver multiple cylinders filled with natural gas to directly below the inflation device, and control the inflation device to inflate multiple cylinders filled with natural gas; the control cabinet is connected to the evacuation device, and the control cabinet is also used to control the evacuation device to evacuate the natural gas remaining in the inflation device after the inflation of the inflation device is completed.

[0007] Optionally, the conveying line includes a frame and rollers;

[0008] The roller is movably installed in the frame and is used for driving the cylinder to move.

[0009] Optionally, the fixing device includes a bottom plate and a hollow cylinder;

[0010] The bottom plate is horizontally placed on the roller; the hollow cylinder is welded on the bottom plate, and the hollow cylinder is used for clamping the cylinder.

[0011] Optionally, the inflation device includes an inflation control pipe, multiple inflation branches and a quick-plug connector; the inflation control pipe is connected to the control cabinet, and the inflation control pipe is used to introduce natural gas from the gas supply source; one end of the multiple inflation branches is respectively threadedly connected to the inflation control pipe, and the other end is a free end; the quick-plug connector is installed at the free end of the inflation branch pipe, and the quick-plug connector is used to connect to the gas cylinder valve of the cylinder to fill natural gas into the cylinder.

[0012] Optionally, the inflation control pipe includes a first stainless steel pipe, a pressure sensor, a flow meter, a pneumatic regulating valve and an emergency shut-off valve; the first stainless steel pipe is used to transport natural gas; the pressure sensor is installed in the first stainless steel pipe to monitor the air pressure of the natural gas in the first stainless steel pipe; the flow meter is installed in the first stainless steel pipe to monitor the natural gas flow in the first stainless steel pipe; the pneumatic regulating valve is installed at the air inlet end of the first stainless steel pipe to control the natural gas flow entering the first stainless steel pipe; the emergency shut-off valve is installed on the first stainless steel pipe and is located at the interface between the pneumatic regulating valve and the air supply source, and is used to cut off the natural gas transmission under abnormal conditions.

[0013] Optionally, the evacuation device includes a second stainless steel tube, a vacuum pressure sensor and a pneumatic shut-off valve; the second stainless steel tube is connected to the first stainless steel tube, and the second stainless steel tube is used to suck out residual natural gas in the first stainless steel tube under the action of external negative pressure; the vacuum pressure sensor is installed in the second stainless steel tube, and is used to monitor the vacuum degree in the second stainless steel tube in real time; the pneumatic shut-off valve is installed in the second stainless steel tube, and the pneumatic shut-off valve is used to cut off the connection between the second stainless steel tube and the first stainless steel tube after vacuuming.

[0014] Optionally, the adsorption-type natural gas intelligent filling line system further includes a limit sensor, which is fixedly mounted on the rack and connected to the control cabinet, and is used to transmit the cylinder position information to the control cabinet; wherein, the control cabinet is used to adjust the conveying speed of the conveying line after receiving the cylinder position information so that each cylinder corresponds to one of the inflation branches.

[0015] Optionally, the adsorption-type natural gas intelligent filling line system further includes: a transfer platform connected to the conveying line, for transferring the steel cylinders that are not filled with natural gas to the conveying line and transferring the steel cylinders that are filled with natural gas on the conveying line to a storage point.

[0016] An adsorption-type intelligent natural gas filling line system using the technical solution of the utility model includes a conveying line, multiple fixing devices, multiple cylinders, a charging device, an evacuation device and a control cabinet; the multiple fixing devices are equidistantly arranged on the conveying line; the cylinders are pre-installed with an adsorbent for adsorbing natural gas, and each cylinder is installed in a corresponding fixing device; the charging device is arranged above the conveying line, and the charging device is used to fill natural gas into cylinders on the conveying line that are not filled with natural gas; the evacuation device is connected to the charging device, and the evacuation device is used to evacuate the natural gas remaining in the charging device after the charging device is filled; the control cabinet is connected to the conveying line, and the control cabinet is used to control the conveying frequency of the conveying line; the control cabinet is connected to the charging device, and the control cabinet is also used to control the conveying line to convey multiple cylinders filled with natural gas to the bottom of the charging device, and control the charging device to inflate multiple cylinders filled with natural gas; the control cabinet is connected to the evacuation device, and the control cabinet is also used to control the evacuation device to evacuate the natural gas remaining in the charging device after the charging device is filled. In this way, the filling operation of a single or multiple gas cylinders can be automatically carried out, and the control cabinet controls the evacuation device to automatically evacuate the residual natural gas in the filling device, ensuring that no leakage occurs during the filling process, thereby improving the efficiency of the adsorption natural gas cylinder filling process, and preventing leakage, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 This is a system diagram of an adsorption-type natural gas intelligent filling line that can be selected according to an embodiment of the present utility model.

[0019] The above drawings include the following reference numerals:

[0020] 10. Conveying line; 11. Frame; 12. Roller; 20. Fixing device; 21. Bottom plate; 22. Hollow cylinder; 30. Cylinder; 40. Inflating device; 41. Inflating control pipe; 411. First stainless steel pipe; 42. Inflating branch pipe; 43. Quick connector; 50. Vacuum device; 51. Second stainless steel pipe; 60. Control cabinet; 70. Limit sensor; 80. Transfer platform. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] like Figure 1 As shown, an adsorption-type natural gas intelligent filling line system is characterized in that it includes a conveying line 10, a plurality of fixing devices 20, a plurality of steel cylinders 30, a gas filling device 40, an evacuation device 50 and a control cabinet 60; a plurality of fixing devices 20 are equidistantly arranged on the conveying line 10; the steel cylinders 30 are pre-installed with an adsorbent for adsorbing natural gas, and each steel cylinder 30 is correspondingly installed in a fixing device; the gas filling device 40 is arranged above the conveying line 10, and the gas filling device 40 is used to fill natural gas into the steel cylinders 30 on the conveying line 10 that are not filled with natural gas; the evacuation device 50 is connected to the gas filling device 40, and the evacuation device 50 is used to fill the gas cylinders 30 that are not filled with natural gas on the conveying line 10; After the device 40 is inflated, the natural gas remaining in the inflating device 40 is evacuated; the control cabinet 60 is connected to the delivery line 10, and the control cabinet 60 is used to control the delivery frequency of the delivery line 10; the control cabinet 60 is connected to the inflating device 40, and the control cabinet 60 is also used to control the delivery line 10 to deliver multiple cylinders 30 filled with natural gas to directly below the inflating device 40, and control the inflating device 40 to inflate multiple cylinders 30 filled with natural gas; the control cabinet 60 is connected to the evacuation device 50, and the control cabinet 60 is also used to control the evacuation device 50 to evacuate the natural gas remaining in the inflating device 40 after the inflating of the inflating device 40 is completed.

[0023] Specifically, adsorption-based natural gas technology involves physical adsorption. A high-surface-weight natural gas adsorbent, specifically designed for natural gas, is placed in a cylinder 30. Its large internal surface area and rich microporous structure allow natural gas to be adsorbed and stored at room temperature and medium pressure. Its greatest advantage is that, at low pressures (3.5-6.0 MPa), it can achieve a storage energy density approaching that of CNG (compressed natural gas) at high pressures (20 MPa). When the pressure in cylinder 30 is lower than the ambient pressure, natural gas is adsorbed on the surface of the adsorbent's solid micropores, allowing it to be stored. When the pressure in cylinder 30 is higher than the ambient pressure, natural gas desorbs from the adsorbent's solid surface and is released to the outside world. A cylinder valve and valve protection sleeve are located at the top of cylinder 30. The valve is installed at the top of the cylinder 30 to control the flow of gas. It connects to the interior of the cylinder via threads or flanges, forming a sealed system. The valve also features corresponding connection ports for connecting to external equipment (such as an inflator or evacuator). The valve protection sleeve is installed on the outside of the gas cylinder valve and wraps around the gas cylinder valve to form a protective sleeve. The valve protection sleeve is connected to the gas cylinder valve by a snap or thread connection, protecting the gas cylinder valve from external impact and damage, thereby improving the safety of the entire cylinder 30.

[0024] Under the control of the preset program and parameters of the control cabinet 60, the conveying line 10 transports the cylinders 30. The conveying line 10 is provided with fixtures 20, each fixture 20 corresponding to a corresponding cylinder 30, preventing the cylinders 30 from tipping over during transportation on the conveying line 10, thereby reducing the risk of leakage caused by shaking or collision of the cylinders 30 during transportation. During filling, operators place unfilled natural gas cylinders 30 sequentially in the fixture 20 of the delivery line 10. Under the control of the control cabinet 60, the delivery line 10 transports the cylinders 30 to directly below the charging device 40. The charging device 40 docks with the unfilled natural gas cylinders 30, and the control cabinet 60 controls the charging device 40 to begin filling the cylinders 30. After filling is completed, the charging device 40 is disconnected from the cylinders, and the control cabinet 60 controls the evacuation device 50 to immediately begin evacuating the gas. Under the action of negative pressure, the remaining natural gas in the charging device 40 is extracted from the evacuation device 50 and stored, thereby achieving a natural gas leakage-free filling process and avoiding the safety risks that may be caused by gas accumulation in the pipeline. In addition, the automated transmission of the delivery line 10 and the precise control of the charging and evacuation processes by the control cabinet 60 improve production efficiency. Moreover, the use of the evacuation device 50 ensures efficient utilization of natural gas and reduces energy waste caused by residual gas.

[0025] In this application, the filling of a single or multiple gas cylinders can be automated. The control cabinet 60 controls the evacuation device 50 to automatically evacuate the remaining natural gas in the filling device 40, ensuring that no leakage occurs during the filling process. This can effectively solve the problems of low efficiency and leakage during the filling process of adsorption-type natural gas cylinders.

[0026] In a possible embodiment, the conveying line 10 includes a frame 11 and a roller 12 ; the roller 12 is movably installed in the frame 11 to drive the cylinder 30 to move.

[0027] Specifically, roller 12 is a heavy-duty, double-chain structure with tubes, gravity-fed, and equally spaced horizontally between the two chains. Roller 12 is mounted within frame 11. Control cabinet 60 controls roller 12's movement via its explosion-proof variable-frequency motor, ensuring the simultaneous and uniform transport of multiple cylinders. Frame 11 is constructed of stainless steel and is height-adjustable to accommodate a variety of on-site installation requirements.

[0028] In a possible embodiment, the fixing device 20 includes a bottom plate 21 and a hollow cylinder 22 ; the bottom plate 21 is placed horizontally on the roller 12 ; the hollow cylinder 22 is welded to the bottom plate 21 , and the hollow cylinder 22 is used to clamp the cylinder 30 .

[0029] Specifically, the base plate 21 is placed horizontally on the rollers of the conveying line 10, and the hollow cylinder 22 is welded to the base plate 21. The distance between the center of the hollow cylinder 22 and the edge of the base plate 21 is half the center distance between the two inflation branches 42. During inflation, the cylinder 30 is placed in the fixture 21, which not only prevents the cylinder 30 from tipping over during inflation and transportation, but also helps accurately locate the cylinder in the conveying line 10.

[0030] In one possible embodiment, the inflation device 40 includes an inflation control pipe 41, multiple inflation branch pipes 42 and a quick-plug connector 43; the inflation control pipe 41 is connected to the control cabinet 60, and the inflation control pipe 41 is used to introduce natural gas from the gas supply source; one end of the multiple inflation branch pipes 42 is respectively threadedly connected to the inflation control pipe 41, and the other end is a free end; the quick-plug connector 43 is installed at the free end of the inflation branch pipe 42, and the quick-plug connector 43 is used to connect to the gas cylinder valve of the cylinder 30 to fill the natural gas into the cylinder 30.

[0031] Specifically, the inflation branch pipe 42 is a stainless steel metal braided high-pressure hose with NPT1 / 2 external threaded flexible joints at both ends. One end of multiple inflation branch pipes 42 is equidistantly installed on the inflation control pipe 41. The hose quick-connect connector 05 is a standard natural gas quick connector with a specification model of H4-62-63. It is precisely manufactured using solid stainless steel rod material and consists of a male connector and a female connector. One end of the male connector has a ball lock mechanism, the other end has an NPT1 / 2 internal threaded connector, and the middle has a valve core. One end of the female connector has a quick-connect mechanism, and the other end has an NPT1 / 2 internal threaded connector. The internal threaded connector of the male connector is connected to the external thread of the inflation hose, and the internal threaded connector of the female connector is connected to the external thread interface of the cylinder valve of the cylinder. After the male connector and the female connector are quickly connected, the cylinder valve is manually opened and the cylinder begins to inflate. After the inflation is completed, the cylinder valve is closed and the male and female connectors are disconnected. The valve core of the male connector automatically closes and the inflation is completed.

[0032] In one possible embodiment, the inflation control pipe 41 includes a first stainless steel pipe 411, a pressure sensor, a flow meter, a pneumatic regulating valve and an emergency shut-off valve; the first stainless steel pipe 411 is used to transport natural gas; the pressure sensor is installed in the first stainless steel pipe 411 to monitor the pressure of the natural gas in the first stainless steel pipe 411; the flow meter is installed in the first stainless steel pipe 411 to monitor the natural gas flow in the first stainless steel pipe 411; the pneumatic regulating valve is installed at the air inlet end of the first stainless steel pipe 411 to control the natural gas flow entering the first stainless steel pipe 411; the emergency shut-off valve is installed on the first stainless steel pipe 411 and is located at the interface between the pneumatic regulating valve and the air supply source, and is used to cut off the natural gas transmission under abnormal conditions.

[0033] Specifically, the charging control tube 41 is connected to the control cabinet 60. The structure within the charging control tube 41 transmits signals to the control cabinet 60, which then controls the recharging system based on the transmitted signals. A pressure sensor monitors the natural gas pressure within the first stainless steel tube 411 in real time, indirectly reflecting the status of the filling process. Operators can adjust the filling flow rate based on pressure fluctuations to ensure stability and accuracy. A flow meter accurately measures the natural gas flow within the first stainless steel tube 411. Under the control of the control cabinet 60, the pneumatic regulating valve precisely controls the natural gas flow entering the first stainless steel tube 411 to meet varying filling requirements. A manually operable emergency shut-off valve allows operators to quickly shut off natural gas supply in the event of a leak or overpressure, and in the event that the control cabinet 60 is unable to control the system, ensuring safety. In this application, parameters such as the natural gas pressure and the natural gas flow entering the cylinder 30 can be monitored in real time to ensure a uniform and stable flow of natural gas into the cylinder.

[0034] In one possible embodiment, the evacuation device 50 includes a second stainless steel tube 51, a vacuum pressure sensor and a pneumatic shut-off valve; the second stainless steel tube 51 is connected to the first stainless steel tube 411, and the second stainless steel tube 51 is used to suck out the residual natural gas in the first stainless steel tube 411 under the action of external negative pressure; the vacuum pressure sensor is installed in the second stainless steel tube 51, and is used to monitor the vacuum degree in the second stainless steel tube 51 in real time; the pneumatic shut-off valve is installed in the second stainless steel tube 51, and the pneumatic shut-off valve is used to cut off the connection between the second stainless steel tube 51 and the first stainless steel tube 411 after vacuuming.

[0035] Specifically, the vacuum pressure sensor monitors the vacuum level within the second stainless steel tube 51 in real time, ensuring the accuracy and effectiveness of the vacuum pumping process. This allows operators to promptly monitor the vacuum status within the tube and control the progress of the vacuum pumping process. A pneumatic shut-off valve quickly disconnects the second stainless steel tube 51 from the first stainless steel tube 411 after vacuum pumping. Once inflation is complete, the control cabinet 60 automatically evacuates any remaining natural gas within the inflation device 40, ensuring that no natural gas leaks after disconnecting the quick-connect connector 43.

[0036] In one possible embodiment, the adsorption-type natural gas intelligent filling line system further includes a limit sensor 70 , which is fixedly mounted on the frame 11 and connected to the control cabinet 60 . The limit sensor 70 is used to transmit position information of the cylinder 30 to the control cabinet 60 .

[0037] The control cabinet 60 is used to adjust the frequency of the explosion-proof variable frequency motor after receiving the position information of the steel cylinder 30 so that each steel cylinder 30 of the conveying line 10 corresponds to a charging branch pipe 42.

[0038] Specifically, the limit sensor 70 is a position limit remote transmission instrument, which is fixedly installed on the outside of the frame 11. It is a non-contact limit sensor. It senses the position change of the cylinder 30 in a non-contact manner through infrared rays, and converts the position of the cylinder 30 into an electrical signal and outputs it to the control cabinet 60. The position parameters of the cylinder 30 when corresponding to the inflation branch pipe 42 are preset in the program control parameters of the control cabinet 60. The control cabinet 60 controls the position of the cylinder 30 on the conveying line 1 by adjusting the conveying speed of the conveying line 10 or controlling the conveying line 10 to stop conveying, thereby playing a role of precise positioning.

[0039] In one possible embodiment, the adsorption type natural gas intelligent filling line system further includes a transfer platform 80 connected to the delivery line 10, for transferring unfilled natural gas cylinders 30 to the delivery line 10 and transferring filled natural gas cylinders 30 on the delivery line 20 to a storage point;

[0040] Specifically, two sets of transfer platforms 80 are located on either side of the conveyor line 10 and are docked with the conveyor line 10. When the conveyor line 10 is in operation, unfilled natural gas cylinders 30 are sequentially placed from the transfer platform 80 on one side into a fixture on the conveyor line 10. Filled cylinders 30 continue along the conveyor line 10 to the transfer platform on the other side, which is used to store the finished, filled cylinders 30. Filled cylinders 30 are then removed from the conveyor line 10 and placed on the transfer platform 80 on that side to be loaded onto a truck or transferred. The transfer platform 80 is a movable structure that can be raised or lowered to meet the height requirements of various transport vehicles. Universal wheels are installed at the bottom of the transfer platform 80, enabling it to move freely in multiple directions, allowing operators to easily move it to the desired location.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An adsorption-type natural gas intelligent filling line system, characterized in that: include: Conveyor line (10); A plurality of fixing devices (20), wherein the plurality of fixing devices (20) are equidistantly arranged on the conveying line (10); A plurality of steel cylinders (30), wherein the steel cylinders (30) are pre-filled with an adsorbent for adsorbing natural gas, and each of the steel cylinders (30) is correspondingly installed in one of the fixing devices; a charging device (40), the charging device (40) being arranged above the conveying line (10), and the charging device (40) being used to charge natural gas into the steel cylinder (30) on the conveying line (10) that is not filled with natural gas; an evacuation device (50) connected to the inflation device (40), the evacuation device (50) being used to evacuate the natural gas remaining in the inflation device (40) after the inflation of the inflation device (40) is completed; A control cabinet (60) is connected to the delivery line (10), and the control cabinet (60) is used to control the delivery frequency of the delivery line (10); the control cabinet (60) is connected to the inflation device (40), and the control cabinet (60) is also used to control the delivery line (10) to deliver the plurality of steel cylinders (30) filled with natural gas to the bottom of the inflation device (40), and to control the inflation device (40) to inflate the plurality of steel cylinders (30) filled with natural gas; the control cabinet (60) is connected to the evacuation device (50), and the control cabinet (60) is also used to control the evacuation device (50) to evacuate the natural gas remaining in the inflation device (40) after the inflation of the inflation device (40) is completed.

2. The adsorption-type natural gas intelligent filling line system according to claim 1 is characterized in that: The conveying line (10) comprises: Rack (11); The roller (12) is movably mounted in the frame (11) and is used to drive the cylinder (30) to move.

3. The adsorption-type natural gas intelligent filling line system according to claim 2 is characterized in that: The fixing device (20) comprises: A bottom plate (21) is placed horizontally on the roller (12); A hollow cylinder (22) is welded to the bottom plate (21), and the hollow cylinder (22) is used to clamp the steel cylinder (30).

4. The adsorption-type natural gas intelligent filling line system according to claim 2, characterized in that: The inflation device (40) comprises: An air charging control pipe (41) connected to the control cabinet (60), the air charging control pipe (41) being used to introduce natural gas from a gas supply source; a plurality of inflation branch pipes (42), wherein one end of the plurality of inflation branch pipes (42) is respectively threadedly connected to the inflation control pipe (41), and the other end is a free end; A quick connector (43) is installed at the free end of the inflation branch pipe (42). The quick connector (43) is used to connect with the cylinder valve of the cylinder (30) to fill the cylinder (30) with natural gas.

5. The adsorption-type natural gas intelligent filling line system according to claim 4 is characterized in that: The inflation control tube (41) comprises: A first stainless steel pipe (411) for transporting natural gas; a pressure sensor installed in the first stainless steel pipe (411) and used to monitor the pressure of the natural gas in the first stainless steel pipe (411); a flow meter installed in the first stainless steel pipe (411) and used to monitor the flow of natural gas in the first stainless steel pipe (411); a pneumatic regulating valve, installed at the air inlet end of the first stainless steel pipe (411), for controlling the flow of natural gas entering the first stainless steel pipe (411); An emergency shut-off valve is installed on the first stainless steel pipe (411) and is located at the interface between the pneumatic regulating valve and the gas supply source, and is used to cut off the natural gas transmission under abnormal conditions.

6. The adsorption-type natural gas intelligent filling line system according to claim 5, characterized in that: The evacuation device (50) comprises: a second stainless steel pipe (51) connected to the first stainless steel pipe (411), the second stainless steel pipe (51) being used to suck out residual natural gas in the first stainless steel pipe (411) under the action of external negative pressure; a vacuum pressure sensor, installed in the second stainless steel tube (51), for monitoring the vacuum degree in the second stainless steel tube (51) in real time; A pneumatic shut-off valve is installed in the second stainless steel tube (51), and the pneumatic shut-off valve is used to cut off the connection between the second stainless steel tube (51) and the first stainless steel tube (411) after vacuuming.

7. The adsorption-type natural gas intelligent filling line system according to claim 4 is characterized in that: The adsorption type natural gas intelligent filling line system also includes: a limit sensor (70), the limit sensor (70) being fixedly mounted on the frame (11) and connected to the control cabinet (60), the limit sensor (70) being used to transmit position information of the cylinder (30) to the control cabinet (60); The control cabinet (60) is used to adjust the conveying speed of the conveying line (10) after receiving the position information of the steel cylinder (30) so that each of the steel cylinders (30) corresponds to one of the inflation branches (42).

8. The adsorption-type natural gas intelligent filling line system according to claim 1 is characterized in that: The adsorption type natural gas intelligent filling line system also includes: The transfer platform (80) is connected to the delivery line (10) and is used to transfer the steel cylinders (30) that are not filled with natural gas to the delivery line (10) and to transfer the steel cylinders (30) that are filled with natural gas on the delivery line (10) to a storage point.

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