An automatic control and pressure regulating device for safety monitoring in oil and gas storage and transportation engineering

Abstract

This invention relates to an automatic control and pressure regulating device for safety monitoring in oil and gas storage and transportation engineering, belonging to the field of gas storage and transmission technology. This device includes a natural gas storage tank, a hydrogen storage tank, and further includes: a natural gas transmission assembly; a hydrogen transmission assembly; a hydrogen blending tank; a monitoring mechanism; an analysis mechanism; a lower hydrogen blending mechanism; and an upper hydrogen blending mechanism. Through the coordinated use of the upper and lower hydrogen blending mechanisms, this invention ensures uniform diffusion of natural gas and hydrogen within the upper and lower hydrogen blending boxes. After uniform diffusion, the hydrogen is discharged downwards and upwards through the upper and lower gas equalization pipes, respectively. This upward and downward discharge of the hydrogen-blended natural gas causes mutual impact, thereby ensuring the uniformity of the natural gas and hydrogen injected into the hydrogen blending tank. This avoids uneven distribution of the discharged hydrogen-blended natural gas due to the lighter hydrogen being concentrated on top of the natural gas, which would affect the quality of the hydrogen-blended natural gas and thus ensure the uniformity of hydrogen-blended natural gas storage and transportation.

Description

Technical Field

[0001] This invention belongs to the field of gas storage and transmission technology, specifically relating to an automatic control and pressure regulating device for safety monitoring in oil and gas storage and transportation engineering. Background Technology

[0002] Currently, in the process of blending hydrogen into natural gas, it is necessary to ensure the proportion of hydrogen blending to avoid explosions caused by excessive hydrogen blending. However, monitoring equipment cannot be installed in the storage tanks and pipelines of hydrogen-blended natural gas during storage and transportation (installing monitoring equipment in storage tanks and pipelines is extremely likely to cause explosions and also causes pressure drops). This makes it impossible to accurately monitor the hydrogen content in the hydrogen-blended natural gas in the storage and transportation system. Based on this, an automatic control and pressure regulating device for safety monitoring in oil and gas storage and transportation engineering is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a reasonably designed automatic control and pressure regulating device for safety monitoring in oil and gas storage and transportation projects in order to solve the above-mentioned problems.

[0004] The present invention achieves the above objectives through the following technical solutions: An automatic control and pressure regulating device for safety monitoring in oil and gas storage and transportation engineering includes a natural gas storage tank, a hydrogen storage tank, and a control module, and further includes: A natural gas transmission assembly that is fixedly connected to the bottom of a natural gas storage tank; A hydrogen gas transmission assembly that is fixedly connected to the bottom of a hydrogen storage tank; A hydrogen blending tank that is fixedly connected to a natural gas transmission assembly and a hydrogen transmission assembly, wherein a protective tank is fixedly connected to the outer surface of the hydrogen blending tank; A monitoring mechanism fixedly connected to the outer surface of the hydrogen-doping tank; An analytical mechanism fixedly connected to the top of the hydrogen-doping tank; The lower hydrogen doping mechanism and the upper hydrogen doping mechanism are fixedly connected inside the hydrogen doping tank.

[0005] As a further optimization of the present invention, the lower hydrogen blending mechanism includes a lower hydrogen blending box fixedly connected to the bottom of the hydrogen blending tank. The two ends of the lower hydrogen blending box are respectively fixedly connected to a lower natural gas injection pipe and a lower hydrogen injection pipe. The top of the lower hydrogen blending box is fixedly connected to a lower gas equalization pipe, and a lower spiral blade is fixedly connected inside the lower gas equalization pipe.

[0006] As a further optimization of the present invention, the upper hydrogen blending mechanism includes an upper hydrogen blending box fixedly connected to the inner surface of the hydrogen blending tank. The two ends of the upper hydrogen blending box are respectively fixedly connected to an upper natural gas injection pipe and an upper hydrogen injection pipe. Both sides of the upper hydrogen blending box are fixedly connected to an upper gas equalization pipe. An upper spiral blade is fixedly connected inside the upper gas equalization pipe.

[0007] As a further optimization of the present invention, the natural gas transmission assembly includes a first gas transmission pipe fixedly connected to the bottom of the natural gas storage tank, a first gas pump fixedly connected to the end of the first gas transmission pipe, a first gas injection pipe fixedly connected to the exhaust end of the first gas pump, a first electric valve installed on the first gas injection pipe, the first gas injection pipe passing through the protective tank and fixedly connected to the hydrogen blending tank, and the first gas injection pipe fixedly connected to the lower natural gas injection pipe and the upper natural gas injection pipe.

[0008] As a further optimization of the present invention, the hydrogen transmission assembly includes a second transmission pipe fixedly connected to the bottom of the hydrogen storage tank, a second gas pump fixedly connected to the end of the second transmission pipe, a second gas injection pipe fixedly connected to the exhaust end of the second gas pump, a second electric valve installed on the second gas injection pipe, the second gas injection pipe passing through the protective tank and fixedly connected to the hydrogen blending tank, and the second gas injection pipe fixedly connected to the lower hydrogen injection pipe and the upper hydrogen injection pipe.

[0009] As a further optimization of the present invention, the monitoring mechanism includes a fixed frame and a fixed plate fixedly connected to the outer surface of the hydrogen-doping tank. A motor is fixedly connected inside the fixed frame, and a reciprocating screw is fixedly connected to the output end of the motor. The reciprocating screw passes through the fixed frame and is rotatably connected to the fixed plate. A laser emitter is threaded through the reciprocating screw and is attached to the inner surface of the protective tank. A first viewing window and a second viewing window are fixedly connected to the hydrogen-doping tank, and a laser receiver is fixedly connected to the outer surface of the hydrogen-doping tank.

[0010] As a further optimization of the present invention, the laser emitter, the first viewing window, the second viewing window and the laser receiver are on the same straight line.

[0011] As a further optimization of the present invention, the analysis mechanism includes a mounting ring fixedly connected to the top of the hydrogen-doping tank, a toothed ring rotatably connected to the outer surface of the mounting ring, and multiple gas analyzers fixedly connected to the bottom of the toothed ring.

[0012] As a further optimization of the present invention, a gear is fixedly connected to the outer surface of the reciprocating screw, and the gear meshes with a gear ring.

[0013] As a further optimization of the present invention, an exhaust pipe is fixedly connected to the protective tank, a third gas supply pipe is fixedly connected to the bottom of the hydrogen-doping tank, a third electric valve is installed on the third gas supply pipe, the third gas supply pipe passes through the protective tank and is fixedly connected to the protective tank, and a pressure sensor is installed on the top of the hydrogen-doping tank.

[0014] The beneficial effects of this invention are as follows: 1. This invention utilizes the combined use of an upper hydrogen blending mechanism and a lower hydrogen blending mechanism to ensure uniform diffusion of natural gas and hydrogen within the upper and lower hydrogen blending boxes. After uniform diffusion, the hydrogen-blended natural gas is discharged downwards and upwards through the upper and lower gas equalization pipes, respectively. This causes the downward and upward-discharged hydrogen-blended natural gas to impact each other, thereby ensuring the uniformity of the natural gas and hydrogen injected into the hydrogen blending tank. This avoids the situation where hydrogen, being lighter, is distributed on top of the natural gas, resulting in uneven discharge of the hydrogen-blended natural gas and affecting its quality. Thus, it ensures the uniformity of hydrogen-blended natural gas storage and transportation.

[0015] 2. This invention utilizes a laser emitter and a laser receiver. The laser emitted by the laser emitter illuminates the hydrogen-blended natural gas in the hydrogen blending tank through a first viewing window, and then falls onto the laser receiver after passing through a second viewing window. The laser receiver sends the received laser data to the control module. Based on Beer-Lambert's law, the control module calculates the degree of laser absorption by the hydrogen-blended natural gas to accurately determine the hydrogen concentration. When the hydrogen concentration is too high, the control module adjusts the output power of the second gas pump and the opening size of the second electric valve accordingly, ensuring that the hydrogen concentration in the hydrogen-blended natural gas in the hydrogen blending tank is always below the maximum hydrogen blending concentration, thereby ensuring the safety of hydrogen blending.

[0016] 3. By incorporating a motor, a reciprocating screw, and a protective tank, this invention reduces interference from external light on the laser receiver. Simultaneously, the laser emitter moves up and down under the rotation of the reciprocating screw, allowing it to irradiate the hydrogen-blended natural gas in the blending tank at different heights. This enables monitoring of the hydrogen concentration in the blended natural gas at different heights within the tank, expanding the monitoring range and ensuring the safety of hydrogen blending in natural gas.

[0017] 4. Through the design of the analysis mechanism, the reciprocating screw rotates, which in turn drives the gear ring to rotate. This causes multiple gas analyzers to rotate along the connection between the tank lid and the tank body of the hydrogen blending tank, providing comprehensive monitoring and analysis of this connection. This ensures timely monitoring and analysis, avoiding the need for a certain amount of time for the gas analyzers to detect leaks at the connection between the tank lid and the tank body. It also prevents safety hazards caused by untimely monitoring and ensures the safety of hydrogen blending transportation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall bottom three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the three-dimensional partial cross-section structure of the present invention; Figure 4 This is a three-dimensional partial cross-sectional bottom view of the present invention; Figure 5 This is a schematic diagram of the three-dimensional partial cross-sectional structure of the front of the hydrogen doping tank of the present invention; Figure 6 This is a schematic diagram of a three-dimensional partial cross-sectional structure of the side of the hydrogen doping tank of the present invention; Figure 7 This is a three-dimensional structural diagram of the hydrogen doping mechanism of the present invention; Figure 8 This is a three-dimensional structural diagram of the monitoring mechanism of the present invention.

[0019] In the diagram: 1. Natural gas storage tank; 2. Hydrogen storage tank; 3. First gas pipeline; 4. First gas pump; 5. First gas injection pipe; 6. First electric valve; 7. Second gas pipeline; 8. Second gas pump; 9. Second gas injection pipe; 10. Second electric valve; 11. Protective tank; 12. Exhaust pipe; 13. Hydrogen blending tank; 14. Third gas pipeline; 15. Third electric valve; 16. Monitoring mechanism; 161. Fixing frame; 162. Motor; 163. Reciprocating screw; 164. Fixing plate; 165. Laser emitter; 166. First 167. Second Viewing Window; 168. Laser Receiver; 17. Analysis Mechanism; 171. Gear Ring; 172. Gear; 173. Mounting Ring; 174. Gas Analyzer; 18. Lower Hydrogen Blending Mechanism; 181. Lower Hydrogen Blending Box; 182. Lower Natural Gas Injection Pipe; 183. Lower Hydrogen Injection Pipe; 184. Lower Gas Circulation Pipe; 185. Lower Spiral Blade; 19. Upper Hydrogen Blending Mechanism; 191. Upper Hydrogen Blending Box; 192. Upper Natural Gas Injection Pipe; 193. Upper Hydrogen Injection Pipe; 194. Upper Gas Circulation Pipe; 195. Upper Spiral Blade. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, an automatic control pressure regulating device for safety monitoring in oil and gas storage and transportation engineering includes a natural gas storage tank 1, a hydrogen storage tank 2, and a control module. The control module is used to control the operation of the automatic control pressure regulating device. A natural gas transmission assembly is fixedly connected to the bottom of the natural gas storage tank 1, and a hydrogen transmission assembly is fixedly connected to the bottom of the hydrogen storage tank 2. A hydrogen blending tank 13 is fixedly connected to the exhaust ends of both the natural gas and hydrogen transmission assemblies. The hydrogen blending tank 13 is configured in two parts: an upper part is a tank cover, and a lower part is a tank body. A pressure sensor (existing technology, not shown in the figure, and not described in detail) is installed on the tank cover of the hydrogen blending tank 13. The detection end of the pressure sensor is located inside the hydrogen blending tank 13. A protective tank 11 is fixedly connected to the outer surface of the hydrogen blending tank 13. The protective tank 11 is configured in three parts: an upper part is a cover, a middle part is a tank body, and a bottom part is a tank bottom. An exhaust pipe 12 is fixedly connected to the protective tank 11, and an electric valve (electric valve) is installed inside the exhaust pipe 12. (The valve is existing technology and is not shown in the figure, so it will not be described in detail.) The bottom of the hydrogen blending tank 13 is fixedly connected to a third gas transmission pipe 14. A third electric valve 15 is installed on the third gas transmission pipe 14. The third gas transmission pipe 14 passes through the protective tank 11 and is fixedly connected to the protective tank 11. The natural gas transmission assembly includes a first gas transmission pipe 3 fixedly connected to the bottom of the natural gas storage tank 1. The end of the first gas transmission pipe 3 is fixedly connected to a first gas pump 4. The exhaust end of the first gas pump 4 is fixedly connected to a first gas injection pipe 5. A first electric valve 6 is installed on the first gas injection pipe 5. The first gas injection pipe 5 passes through the protective tank 11 and is fixedly connected to the hydrogen blending tank 13. The hydrogen transmission assembly includes a second gas transmission pipe 7 fixedly connected to the bottom of the hydrogen storage tank 2. The end of the second gas transmission pipe 7 is fixedly connected to a second gas pump 8. The exhaust end of the second gas pump 8 is fixedly connected to a second gas injection pipe 9. A second electric valve 10 is installed on the second gas injection pipe 9. The second gas injection pipe 9 passes through the protective tank 11 and is fixedly connected to the hydrogen blending tank 13.

[0022] When hydrogen is blended into natural gas, the control module controls the operation of the first gas pump 4 and the second gas pump 8, and opens the first electric valve 6 and the second electric valve 10. At this time, the first gas pump 4 draws natural gas from the natural gas storage tank 1 through the first gas transmission pipe 3 and injects the natural gas into the hydrogen blending tank 13 through the first gas injection pipe 5. The second gas pump 8 draws hydrogen from the hydrogen storage tank 2 through the second gas transmission pipe 7 and injects the hydrogen into the hydrogen blending tank 13 through the second gas injection pipe 9. (It should be noted that when blending natural gas with hydrogen, the output power of the first gas pump 4 and the second gas pump 8 is adjusted by the control module so that the hydrogen content in the hydrogen-blended natural gas entering the hydrogen blending tank 13 is not higher than 20%). After the gas is injected into the hydrogen blending tank 13, the third electric valve 15 can be opened to transport the hydrogen-blended natural gas through the third gas transmission pipe 14. Meanwhile, during the process of natural gas and hydrogen entering the hydrogen blending tank 13, the control module controls the pressure sensor to detect the pressure inside the hydrogen blending tank 13 and sends the detected data to the control module. When the pressure inside the hydrogen blending tank 13 exceeds or falls below the pressure threshold, the control module adjusts the gas flow rate into the hydrogen blending tank 13 by changing the output power of the first gas pump 4 and the second gas pump 8, and simultaneously adjusting the opening size of the first electric valve 6 and the second electric valve 10, thereby achieving the purpose of adjusting the internal pressure of the hydrogen blending tank 13.

[0023] like Figure 5 , Figure 6 and Figure 7 As shown, a lower hydrogen blending mechanism 18 and an upper hydrogen blending mechanism 19 are fixedly connected inside the hydrogen blending tank 13. The lower hydrogen blending mechanism 18 includes a lower hydrogen blending box 181 fixedly connected to the bottom of the hydrogen blending tank 13. A lower natural gas injection pipe 182 and a lower hydrogen injection pipe 183 are fixedly connected to both ends of the lower hydrogen blending box 181, respectively. A lower gas equalization pipe 184 is fixedly connected to the top of the lower hydrogen blending box 181. A lower spiral blade 185 is fixedly connected inside the lower gas equalization pipe 184. The upper hydrogen blending mechanism 19 includes a lower hydrogen blending mechanism 182 and an upper hydrogen blending mechanism 19 fixedly connected to the bottom of the hydrogen blending tank 13. The upper hydrogen-doping box 191 is located on the inner surface of the 13. The two ends of the upper hydrogen-doping box 191 are fixedly connected to the upper natural gas injection pipe 192 and the upper hydrogen injection pipe 193, respectively. The first injection pipe 5 is fixedly connected to the lower natural gas injection pipe 182 and the upper natural gas injection pipe 192. The second injection pipe 9 is fixedly connected to the lower hydrogen injection pipe 183 and the upper hydrogen injection pipe 193. The upper gas equalization pipe 194 is fixedly connected to both sides of the upper hydrogen-doping box 191. The upper spiral blade 195 is fixedly connected inside the upper gas equalization pipe 194.

[0024] When the first injection pipe 5 delivers natural gas and the second injection pipe 9 delivers hydrogen, the natural gas delivered by the first injection pipe 5 is injected into the lower hydrogen blending box 181 and the upper hydrogen blending box 191 through the lower natural gas injection pipe 182 and the upper natural gas injection pipe 192, respectively. The hydrogen delivered by the second injection pipe 9 is injected into the lower hydrogen blending box 181 and the upper hydrogen blending box 191 through the lower hydrogen injection pipe 183 and the upper hydrogen injection pipe 193, respectively. The natural gas and hydrogen injected into the lower hydrogen blending box 181 diffuse evenly under the special structural setting of the lower hydrogen blending box 181. After even diffusion, they are spirally mixed through the lower gas equalization pipe 184 and the lower spiral plate 185 inside the lower gas equalization pipe 184, forming a vortex state. The natural gas and hydrogen injected into the upper hydrogen blending box 191 are uniformly diffused due to the special structure of the upper hydrogen blending box 191. After uniform diffusion, they are spirally mixed through the upper gas equalization pipe 194 and the upper spiral plate 195 inside the upper gas equalization pipe 194 and then injected downward into the hydrogen blending tank 13 in a vortex state. They are mixed with the hydrogen-blended natural gas injected upward in a vortex state through the lower gas equalization pipe 184, thereby ensuring the uniformity of the natural gas and hydrogen injected into the hydrogen blending tank 13. This avoids the uneven distribution of hydrogen-blended natural gas due to the lighter hydrogen being evenly distributed on the upper layer of natural gas, which would affect the quality of the hydrogen-blended natural gas and thus ensure the uniformity of hydrogen-blended natural gas storage and transportation.

[0025] like Figure 5 , Figure 6 and Figure 8 As shown, a monitoring mechanism 16 is fixedly connected to the outer surface of the hydrogen-doping tank 13. The monitoring mechanism 16 is located inside the protective tank 11. The monitoring mechanism 16 includes a fixing frame 161 and a fixing plate 164 fixedly connected to the outer surface of the hydrogen-doping tank 13. A motor 162 is fixedly connected inside the fixing frame 161. A reciprocating screw 163 is fixedly connected to the output end of the motor 162. The reciprocating screw 163 passes through the fixing frame 161 and is rotatably connected to the fixing plate 164. A laser emitter 165 is threadedly connected to the reciprocating screw 163. The laser emitter 165 is attached to the inner surface of the protective tank 11, providing a limit for the laser emitter 165, so that the laser emitter 165 can only move up and down. The hydrogen doping tank 13 is fixedly connected to the first viewing window 166 and the second viewing window 167. The outer surface of the hydrogen doping tank 13 is fixedly connected to the laser receiver 168. The setting of the protective tank 11 reduces the interference of external light on the laser receiver 168. The laser emitter 165, the first viewing window 166, the second viewing window 167 and the laser receiver 168 are on the same straight line.

[0026] During the process of blending hydrogen into natural gas, the control module starts the motor 162, laser emitter 165, and laser receiver 168. The laser emitted by the laser emitter 165 irradiates the hydrogen-blended natural gas in the blending tank 13 through the first viewing window 166, and then falls onto the laser receiver 168 through the second viewing window 167. The laser receiver 168 sends the received laser data to the control module. According to the Beer-Lambert law, the control module calculates the degree of absorption of the laser by the blended natural gas to accurately determine the hydrogen concentration. When the hydrogen concentration is too high, the control module adjusts the output power of the second gas pump 8 and the opening size of the second electric valve 10 accordingly. During this process, the operation of the motor 162 will drive the reciprocating screw 163 to rotate, causing the laser emitter 165 to move up and down under the rotation of the reciprocating screw 163. This allows the laser emitter 165 to irradiate the hydrogen-blended natural gas in the blending tank 13 at different heights, thereby monitoring the hydrogen concentration in the blended natural gas at different heights in the blending tank 13, expanding the monitoring range, and ensuring the safety of blending hydrogen into natural gas.

[0027] like Figure 5 , Figure 6 and Figure 8 As shown, an analysis mechanism 17 is fixedly connected to the top of the hydrogen blending tank 13. The analysis mechanism 17 includes a mounting ring 173 fixedly connected to the top of the hydrogen blending tank 13. A gear ring 171 is rotatably connected to the outer surface of the mounting ring 173. A gear 172 is fixedly connected to the outer surface of the reciprocating screw 163. The gear 172 meshes with the gear ring 171. Multiple gas analyzers 174 are fixedly connected to the bottom of the gear ring 171. The analysis end of the gas analyzer 174 is located at the connection between the tank cover and the tank body of the hydrogen blending tank 13 (it should be noted that this is because leakage is generally more likely to occur at the connection between the tank cover and the tank body).

[0028] When the reciprocating screw 163 rotates, it will drive the gear ring 171 to rotate through the gear 172, causing multiple gas analyzers 174 to rotate along the connection between the tank cover and the tank body of the hydrogen blending tank 13. This allows for comprehensive monitoring and analysis of the connection between the tank cover and the tank body of the hydrogen blending tank 13, ensuring the timeliness of monitoring and analysis. It also avoids the situation where it takes a certain amount of time for the gas analyzers 174 to detect gas leaks when leaks occur at the connection between the tank cover and the tank body of the hydrogen blending tank 13. This prevents safety hazards caused by untimely monitoring and ensures the safety of hydrogen blending transportation. When the gas analyzer 174 detects a gas leak, it sends the monitored data to the control module. The control module controls the first gas pump 4, the second gas pump 8, the first electric valve 6, the second electric valve 10, and the third electric valve 15 to close, and opens the electric valve in the exhaust pipe 12 to discharge the leaked gas into the collection device until it is completely discharged.

[0029] The specific working principle of this invention is as follows: When hydrogen is blended into natural gas, the control module controls the operation of the first gas pump 4 and the second gas pump 8, and opens the first electric valve 6 and the second electric valve 10. At this time, the first gas pump 4 draws natural gas from the natural gas storage tank 1 through the first gas transmission pipe 3 and injects the natural gas into the hydrogen blending tank 13 through the first gas injection pipe 5. Meanwhile, the second gas pump 8 draws hydrogen from the hydrogen storage tank 2 through the second gas transmission pipe 7 and injects the hydrogen into the hydrogen blending tank 13 through the second gas injection pipe 9. (It should be noted that during the blending of natural gas with hydrogen, the control module adjusts the output power of the first gas pump 4 and the second gas pump 8 to ensure the appropriate flow rate for the blending process.) The hydrogen content in the hydrogen-blended natural gas in the hydrogen tank 13 is no higher than 20%. At the same time, during the process of natural gas and hydrogen entering the hydrogen-blended tank 13, the control module controls the pressure sensor to detect the pressure inside the hydrogen-blended tank 13 and sends the detected data to the control module. When the pressure inside the hydrogen-blended tank 13 exceeds or falls below the pressure threshold, the control module adjusts the gas flow rate into the hydrogen-blended tank 13 by changing the output power of the first gas pump 4 and the second gas pump 8, and simultaneously adjusting the opening size of the first electric valve 6 and the second electric valve 10, thereby achieving the purpose of adjusting the internal pressure of the hydrogen-blended tank 13. When the first gas injection pipe 5 delivers natural gas and the second gas injection pipe 9 delivers hydrogen, the natural gas delivered by the first gas injection pipe 5 is injected into the lower hydrogen blending box 181 and the upper hydrogen blending box 191 through the lower natural gas injection pipe 182 and the upper natural gas injection pipe 192, respectively. The hydrogen delivered by the second gas injection pipe 9 is injected into the lower hydrogen blending box 181 and the upper hydrogen blending box 191 through the lower hydrogen injection pipe 183 and the upper hydrogen injection pipe 193, respectively. The natural gas and hydrogen injected into the lower hydrogen blending box 181 diffuse evenly under the action of the special structure of the lower hydrogen blending box 181. After even diffusion, they are spirally mixed through the lower gas equalization pipe 184 and the lower spiral plate 185 in the lower gas equalization pipe 184, and then injected upward into the hydrogen blending tank 13 in a vortex state. The hydrogen is then injected into the upper hydrogen blending box 191. Natural gas and hydrogen are uniformly diffused under the special structure of the upper hydrogen blending box 191. After uniform diffusion, they are spirally mixed through the upper gas equalization pipe 194 and the upper spiral plate 195 inside the upper gas equalization pipe 194 and injected downward into the hydrogen blending tank 13 in a vortex state. They are mixed with the hydrogen-blended natural gas injected upward in a vortex state through the lower gas equalization pipe 184, thereby ensuring the uniformity of natural gas and hydrogen injected into the hydrogen blending tank 13. This avoids the uneven distribution of hydrogen-blended natural gas due to the lighter hydrogen being evenly distributed on the upper layer of natural gas, which would affect the quality of hydrogen-blended natural gas. This ensures the uniformity of hydrogen-blended natural gas storage and transportation. After the gas is injected into the hydrogen blending tank 13, the third electric valve 15 can be opened to transport the hydrogen-blended natural gas through the third gas transmission pipe 14. During the process of blending hydrogen into natural gas, the control module starts the motor 162, laser emitter 165, and laser receiver 168. The laser emitted by the laser emitter 165 irradiates the hydrogen-blended natural gas in the blending tank 13 through the first viewing window 166, and then falls on the laser receiver 168 through the second viewing window 167. The laser receiver 168 sends the received laser data to the control module. According to the Beer-Lambert law, the control module calculates the degree of absorption of the laser by the blended natural gas and accurately calculates the hydrogen concentration. When the hydrogen concentration is too high, the control module adjusts the output power of the second gas pump 8 and the opening size of the second electric valve 10 accordingly. During this process, the operation of the motor 162 will drive the reciprocating screw 163 to rotate, so that the laser emitter 165 moves up and down under the rotation of the reciprocating screw 163. This allows the laser emitter 165 to irradiate the hydrogen-blended natural gas in the blending tank 13 at different heights, thereby monitoring the hydrogen concentration in the hydrogen-blended natural gas at different heights in the blending tank 13, expanding the monitoring range, and ensuring the safety of blending hydrogen into natural gas. At the same time, when the reciprocating screw 163 rotates, it will drive the gear ring 171 to rotate through the gear 172, causing multiple gas analyzers 174 to rotate along the connection between the tank cover and the tank body of the hydrogen blending tank 13. This allows for comprehensive monitoring and analysis of the connection between the tank cover and the tank body of the hydrogen blending tank 13, ensuring the timeliness of monitoring and analysis. It also avoids the situation where it takes a certain amount of time for the gas analyzers 174 to detect gas leaks when leaks occur at the connection between the tank cover and the tank body of the hydrogen blending tank 13. This prevents safety hazards caused by untimely monitoring and ensures the safety of hydrogen blending transportation. When the gas analyzer 174 detects a gas leak, it sends the monitored data to the control module. The control module controls the first gas pump 4, the second gas pump 8, the first electric valve 6, the second electric valve 10, and the third electric valve 15 to close, and opens the electric valve in the exhaust pipe 12 to discharge the leaked gas into the collection device until it is completely discharged. At the same time, the control module sends a leak signal to the control center so that maintenance personnel can carry out timely repairs.

[0030] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A safety monitoring and automatic control pressure regulating device for oil and gas storage and transportation engineering, comprising a natural gas storage tank (1), a hydrogen storage tank (2), and a control module, characterized in that, Also includes: A natural gas transmission assembly is fixedly connected to the bottom of a natural gas storage tank (1), the natural gas transmission assembly including a first gas injection pipe (5); A hydrogen gas delivery assembly is fixedly connected to the bottom of the hydrogen storage tank (2), the hydrogen gas delivery assembly including a second gas injection pipe (9); A hydrogen blending tank (13) is fixedly connected to a natural gas transmission assembly and a hydrogen transmission assembly, and a protective tank (11) is fixedly connected to the outer surface of the hydrogen blending tank (13). A monitoring mechanism (16) is fixedly connected to the outer surface of the hydrogen doping tank (13); An analytical unit (17) is fixedly connected to the top of the hydrogen-doped tank (13); The lower hydrogen doping mechanism (18) and the upper hydrogen doping mechanism (19) are fixedly connected inside the hydrogen doping tank (13). The monitoring mechanism (16) includes a fixed frame (161) and a fixed plate (164) fixedly connected to the outer surface of the hydrogen-doping tank (13). A motor (162) is fixedly connected inside the fixed frame (161). A reciprocating screw (163) is fixedly connected to the output end of the motor (162). The reciprocating screw (163) passes through the fixed frame (161) and is rotatably connected to the fixed plate (164). A laser emitter (165) is connected to the reciprocating screw (163). The laser emitter (165) is in contact with the inner surface of the protective tank (11). A first viewing window (166) and a second viewing window (167) are fixedly connected to the hydrogen-doping tank (13). A laser receiver (168) is fixedly connected to the outer surface of the hydrogen-doping tank (13). A gear (172) is fixedly connected to the outer surface of the reciprocating screw (163). The gear (172) meshes with the gear ring (171). The analysis unit (17) includes a mounting ring (173) fixedly connected to the top of the hydrogen doping tank (13), a toothed ring (171) rotatably connected to the outer surface of the mounting ring (173), and a plurality of gas analyzers (174) fixedly connected to the bottom of the toothed ring (171). The lower hydrogen blending mechanism (18) includes a lower hydrogen blending box (181) fixedly connected to the bottom of the hydrogen blending tank (13). The two ends of the lower hydrogen blending box (181) are respectively fixedly connected to a lower natural gas injection pipe (182) and a lower hydrogen injection pipe (183). The top of the lower hydrogen blending box (181) is fixedly connected to a lower gas equalization pipe (184). A lower spiral blade (185) is fixedly connected inside the lower gas equalization pipe (184). The upper hydrogen mixing mechanism (19) includes an upper hydrogen mixing box (191) fixedly connected to the inner surface of the hydrogen mixing tank (13). The two ends of the upper hydrogen mixing box (191) are respectively fixedly connected to an upper natural gas injection pipe (192) and an upper hydrogen injection pipe (193). Both sides of the upper hydrogen mixing box (191) are fixedly connected to an upper gas equalization pipe (194). An upper spiral blade (195) is fixedly connected inside the upper gas equalization pipe (194). The first gas injection pipe (5) is fixedly connected to the lower natural gas injection pipe (182) and the upper natural gas injection pipe (192); The second gas injection pipe (9) is fixedly connected to the lower hydrogen injection pipe (183) and the upper hydrogen injection pipe (193).

2. The automatic control and pressure regulating device for safety monitoring in oil and gas storage and transportation engineering according to claim 1, characterized in that: The bottom of the natural gas storage tank (1) is fixedly connected to a first gas transmission pipe (3), the end of the first gas transmission pipe (3) is fixedly connected to a first gas pump (4), the exhaust end of the first gas pump (4) is fixedly connected to a first gas injection pipe (5), a first electric valve (6) is installed on the first gas injection pipe (5), the first gas injection pipe (5) passes through the protective tank (11) and is fixedly connected to the hydrogen blending tank (13).

3. The automatic control and pressure regulating device for safety monitoring in oil and gas storage and transportation engineering according to claim 1, characterized in that: The bottom of the hydrogen storage tank (2) is fixedly connected to a second gas supply pipe (7), the end of the second gas supply pipe (7) is fixedly connected to a second gas pump (8), the exhaust end of the second gas pump (8) is fixedly connected to a second gas injection pipe (9), a second electric valve (10) is installed on the second gas injection pipe (9), the second gas injection pipe (9) passes through the protective tank (11) and is fixedly connected to the hydrogen mixing tank (13).

4. The automatic control and pressure regulating device for safety monitoring in oil and gas storage and transportation engineering according to claim 1, characterized in that: The laser emitter (165), the first viewing window (166), the second viewing window (167), and the laser receiver (168) are on the same straight line.

5. The automatic control and pressure regulating device for safety monitoring in oil and gas storage and transportation engineering according to claim 1, characterized in that: An exhaust pipe (12) is fixedly connected to the protective tank (11), a third gas supply pipe (14) is fixedly connected to the bottom of the hydrogen-doped tank (13), a third electric valve (15) is installed on the third gas supply pipe (14), the third gas supply pipe (14) passes through the protective tank (11) and is fixedly connected to the protective tank (11), and a pressure sensor is installed on the top of the hydrogen-doped tank (13).

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