A hydrogenation machine with flow regulation function

Abstract

The present invention relates to the technical field of hydrogenation equipment, and discloses a hydrogenation machine with a flow regulating function, comprising a hydrogenation machine mainframe, a hydrogenation pipeline system arranged in the hydrogenation machine mainframe, a hydrogenation hose and a hydrogenation gun arranged at the output end of the hydrogenation pipeline system, a mass flow meter and a flow regulating valve respectively arranged on the hydrogenation pipeline system, and the mass flow meter and the flow regulating valve are respectively connected to the control system of the hydrogenation machine mainframe. The present invention realizes high-precision control of the flow of the hydrogenation machine and has good safety.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogenation equipment, and in particular to a hydrogenation machine with a flow regulation function. Background Art

[0002] The compressed hydrogen refueling machine for automobiles is a special equipment used to provide compressed hydrogen fuel or natural gas mixed hydrogen fuel filling services to automobiles, and has metering and pricing functions, referred to as a hydrogen refueling machine.

[0003] A typical hydrogen refueling machine is a compressed hydrogen refueling machine for automobiles that meets the Chinese national standard GB / T31138-2014 (such as Figure 4 (As shown) When refueling a fuel cell vehicle with hydrogen, it is necessary to control the pressure of the hydrogen storage bottle in the fuel cell vehicle and control the flow rate to ensure that the hydrogen refueling speed meets the requirements of GB / T31138 specification for compressed hydrogen refueling machines for automobiles and the flow rate is within the range of 60g / s.

[0004] In order to quickly fill the fuel cell vehicle, the hydrogen pressure after compression at the hydrogen filling station exceeds the rated storage pressure of the hydrogen storage bottle of the fuel cell vehicle. For example, at a 35MPa hydrogen filling station, the pressure before hydrogen filling is 45MPa; at a 70MPa hydrogen filling station, the pressure before hydrogen filling is 87.5MPa. If the speed (flow rate) of hydrogen filling cannot be effectively controlled, the hydrogen storage bottle on the fuel cell vehicle will be overloaded, causing dangerous accidents.

[0005] In order to solve the above problems, the prior art adopts the method of installing a throttling orifice plate on the internal pipeline of the hydrogenation machine to control the speed (flow rate) of hydrogenation. However, the hydrogenation machine equipped with a throttling orifice plate still has the following problems:

[0006] Conventional throttling orifice plates do not have the function of automatic flow adjustment and can only be adjusted in a fixed manner. Therefore, multiple different throttling orifice plates may be installed in a hydrogenation machine to control the flow. The installation of multiple different throttling orifice plates increases the complexity of the hydrogenation machine structure, which on the one hand increases the equipment cost and on the other hand reduces the safety and reliability of the equipment.

[0007] If a throttling orifice assembly with a flow regulation function (such as a rotating plate throttling orifice assembly) is used, although the flow can be automatically regulated, due to the structural problems of the throttling orifice assembly itself, the accuracy of its flow regulation is generally poor, and it is unable to achieve high-precision control of the flow, which will lead to a decline in the performance of the hydrogenation machine equipment. Summary of the invention

[0008] In order to solve the above problems, the present invention proposes a hydrogenation machine with a flow rate regulation function, aiming to achieve high-precision control of the flow rate of the hydrogenation machine. The specific technical solution is as follows:

[0009] A hydrogenator with a flow regulation function comprises a hydrogenator main unit and a hydrogenation pipeline system arranged in the hydrogenator main unit, wherein a hydrogenation hose and a hydrogenation gun are arranged at the output end of the hydrogenation pipeline system, and a mass flow meter and a flow regulating valve are respectively arranged on the hydrogenation pipeline system, and the mass flow meter and the flow regulating valve are respectively connected to the control system of the hydrogenator main unit.

[0010] In the above technical solution, a flow regulating valve is provided on the pipeline of the hydrogenator, which is connected to the control system. The control system controls the flow regulating valve in real time according to the flow information of the mass flow meter, thereby realizing accurate control of the flow.

[0011] Preferably, a PID regulator is provided in the control system, and the control system realizes flow regulation of the flow regulating valve through the PID regulator.

[0012] The above control system adopts PID regulator for flow regulation, which has the advantages of good regulation stability and reliable operation.

[0013] As a preferred solution of the present invention, the hydrogenation pipeline system is also provided with an adjustable throttling orifice plate for safety flow limiting.

[0014] Preferably, the control flow rate set by the flow regulating valve is smaller than the limiting flow rate set by the adjustable throttling orifice.

[0015] By combining the flow control valve capable of high-precision regulation and control with the adjustable throttling orifice plate, the high-precision control advantage of the flow control valve is fully utilized on the one hand, and the reliable flow limiting advantage of the adjustable throttling orifice plate is fully utilized on the other hand. The combination of the two greatly enhances the safety of the hydrogenation machine under high-precision flow regulation.

[0016] As a further improvement of the present invention, a break valve is arranged between the hydrogenation hose and the hydrogenation gun, and a break valve safety detector for regularly detecting the safety status of the break valve is arranged on the break valve. The break valve safety detector includes a first flange fixedly connected to one end of the break valve, a second flange slidably connected to the outer circle of the other end of the break valve, and an outer cylinder body hollowly sleeved on the periphery of the break valve, one end of the outer cylinder body is integrally connected to the first flange, and the other end of the outer cylinder body is detachably connected to the second flange. After the first flange, the second flange and the outer cylinder body are connected, a closed cavity is formed between the outer circle of the break valve, and a third flange is fixedly arranged on the outer circle of the break valve near the second flange in the closed cavity, a bellows is connected between the third flange and the second flange, and a pressure gauge for detecting the internal pressure of the closed cavity is arranged on the outer cylinder body.

[0017] When the breakaway valve is in normal use, the connection between the outer cylinder and the second flange is in a detachable state (no connector is installed at the connection); when it is necessary to conduct a real-time security inspection of the breakaway valve in use, the outer cylinder and the second flange are fixed together using a connector, and then the breakaway valve is disengaged using external force. Since the disengaged portion of the breakaway valve is in a closed cavity, even if the breakaway valve fails and hydrogen leaks, it will not leak out. At the same time, the pressure change of the pressure gauge can be used to determine whether the breakaway valve is normal. After the security inspection, the connector between the outer cylinder and the second flange is removed, and the two halves of the breakaway valve are reconnected, and it can be put into normal use.

[0018] By providing a breakaway valve safety inspector on the breakaway valve, regular real-time safety inspections are achieved during the use of the hydrogenator, thereby preventing hydrogen leakage caused by a malfunction of the breakaway valve, thereby improving the safety of the hydrogenator.

[0019] Preferably, a sealing ring is provided between the third flange and the second flange, and the sealing ring is located at the periphery of the bellows.

[0020] As one of the ways of disposing the sealing ring between the third flange and the second flange, the sealing ring is connected to the end surface of the third flange.

[0021] As a second arrangement of the sealing ring between the third flange and the second flange, the sealing ring is connected to the end surface of the second flange.

[0022] The setting of the sealing ring between the third flange and the second flange can ensure that when the break valve is inspected, the sealing ring contacts the third flange and the second flange at the same time after the break valve is opened. When hydrogen leakage occurs, the high-pressure hydrogen can further push the third flange against the second flange, thereby forming a more reliable seal and protecting the bellows, thereby further improving the reliability of the break valve safety inspector.

[0023] Preferably, a limit screw for preventing the second flange from sliding out of the breakaway valve is further provided between the second flange and the third flange.

[0024] Preferably, a screw connection hole is provided on the second flange, and a screw penetration hole is provided on the third flange, and the threaded head of the limit screw passes through the screw penetration hole and is connected to the screw connection hole.

[0025] By setting a limit screw between the second flange and the third flange, on the one hand, the second flange can be prevented from slipping out of the breakaway valve, and on the other hand, the expansion and contraction of the bellows can be ensured to be within a reasonable range, preventing the bellows from exceeding the expansion and contraction stroke and being damaged.

[0026] As a further improvement of the present invention, a magnetic ring in contact with the end surface of the outer cylinder is fixed on the second flange.

[0027] The above-mentioned magnetic connection between the end face of the outer cylinder and the second flange is achieved by setting a magnetic ring, which is beneficial when the pull-off valve is used normally (no connecting parts are installed at the connection between the outer cylinder and the second flange). The outer cylinder and the second flange can still be connected together through the effect of magnetism, thereby helping to protect the parts in the closed cavity from being affected by external dust, thereby further improving the adaptability and reliability of the pull-off valve safety inspector.

[0028] In the present invention, the detachable connection between the outer cylinder and the second flange is a bolt connection.

[0029] In the present invention, a microchannel heat exchanger is also provided on the hydrogenation pipeline system.

[0030] A microchannel heat exchanger is installed on the pipeline of the hydrogenation machine, and the microchannel heat exchanger is connected between the pipeline between the mass flow meter and the hydrogenation hose. During the hydrogenation operation, hydrogen enters the air intake pipeline of the hydrogenation machine from the gas source interface of the hydrogenation machine host, and then passes through the gas filter, air intake valve, mass flow meter, microchannel heat exchanger, hydrogenation hose, break valve, hydrogenation gun, and then is filled into the vehicle gas cylinder through the vehicle hydrogenation port.

[0031] Compared with the hydrogenator in the prior art, the present invention has a microchannel heat exchanger installed on the hydrogenator pipeline. The volume of the microchannel heat exchanger is much smaller than that of the water-cooled unit (the selected microchannel heat exchanger is only about the size of a 14-inch computer and the thickness is only 100 mm). It can be installed inside the hydrogenator host, thereby realizing the integrated installation of the hydrogenator host and the cooling system, thereby reducing the footprint of the equipment and reducing the workload of on-site installation of the equipment.

[0032] In addition, the built-in installation of the microchannel heat exchanger in the hydrogenation machine main unit overcomes the disadvantage of the traditional high-pressure hydrogenation machine using an external chiller that requires laying longer pipelines, thereby improving the equipment reliability and effectively improving the efficiency of the cooling system.

[0033] Preferably, the control system is a PLC control system or a microcomputer control system.

[0034] The beneficial effects of the present invention are:

[0035] First, a hydrogenator with flow rate regulation function of the present invention is provided with a flow rate regulating valve on the pipeline of the hydrogenator, which is connected to a control system. The control system controls the flow rate regulating valve in real time according to the flow rate information of the mass flow meter, thereby realizing accurate control of the flow rate. The control system adopts a PID regulator for flow rate regulation, which has the advantages of good regulation stability and reliable operation.

[0036] Secondly, the hydrogenator with flow regulation function of the present invention, by combining a flow regulating valve that can achieve high-precision regulation and control with an adjustable throttling orifice plate, fully utilizes the high-precision control advantage of the flow regulating valve on the one hand, and fully utilizes the reliable flow limiting advantage of the adjustable throttling orifice plate on the other hand. The combination of the two greatly enhances the safety of the hydrogenator under high-precision flow regulation.

[0037] Third, a hydrogenation machine with a flow regulation function according to the present invention realizes regular real-time safety inspection of the hydrogenation machine during use by providing a breakaway valve safety inspector on the breakaway valve, thereby preventing hydrogen leakage caused by failure of the breakaway valve, thereby improving the safety of the hydrogenation machine.

[0038] Fourthly, in a hydrogenation machine with a flow regulation function of the present invention, the sealing ring is arranged between the third flange and the second flange, so that when the break valve is inspected, the sealing ring contacts the third flange and the second flange at the same time after the break valve is opened, and when hydrogen leakage occurs, the high-pressure hydrogen can further push the third flange toward the second flange, thereby forming a more reliable seal and protecting the bellows, thereby further improving the reliability of the break valve safety inspector.

[0039] Fifth, a hydrogenation machine with a flow regulation function of the present invention can prevent the second flange from slipping out of the pull-off valve by setting a limit screw between the second flange and the third flange, and can also ensure that the expansion and contraction of the bellows is within a reasonable range on the other hand, preventing the bellows from exceeding the expansion and contraction stroke and being damaged.

[0040] Sixth, a hydrogenation machine with a flow regulation function of the present invention realizes a magnetic connection between the end face of the outer cylinder and the second flange by setting a magnetic ring, which is beneficial when the break valve is used normally (no connecting parts are installed at the connection between the outer cylinder and the second flange). The outer cylinder and the second flange can still be connected together through the effect of magnetism, which is beneficial to protect the parts in the closed cavity from being affected by external dust, thereby further improving the adaptability and reliability of the break valve safety inspector.

[0041] Seventh, a hydrogenator with a flow regulation function of the present invention is provided with a microchannel heat exchanger on the pipeline of the hydrogenator. The volume of the microchannel heat exchanger is much smaller than that of a water-cooled unit (the volume of the selected microchannel heat exchanger is approximately the size of a 14-inch computer and the thickness is only 100 mm). It can be installed inside the hydrogenator host, thereby realizing the integrated installation of the hydrogenator host and the cooling system, thereby reducing the footprint of the equipment and reducing the workload of on-site installation of the equipment.

[0042] Eighth, the hydrogenation machine with flow regulation function of the present invention overcomes the disadvantage that a traditional high-pressure hydrogenation machine using an external chiller needs to lay a long pipeline by installing a microchannel heat exchanger in the hydrogenation machine main unit, thereby improving the reliability of the equipment and effectively improving the efficiency of the cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the system structure of a hydrogenation machine with flow regulation function of the present invention;

[0044] Figure 2 It is a structural schematic diagram of a breakaway valve safety detector provided on a breakaway valve of a hydrogenation machine;

[0045] Figure 3 yes Figure 2 A partial enlarged view of

[0046] Figure 4 It is a schematic diagram of the system structure of a hydrogenation machine in the prior art.

[0047] In the figure: 1. breakaway valve, 2. breakaway valve safety inspector, 3. first flange, 4. third flange, 5. outer cylinder, 6. closed cavity, 7. pressure gauge, 8. bellows, 9. second flange, 10. sealing ring, 11. hydrogenation hose, 12. hydrogenation gun, 13. hydrogenation machine main engine, 14. connector (bolt), 15. sealing ring, 16. sealing ring, 17. limit screw, 18. magnetic ring, 19. breakaway valve release part. DETAILED DESCRIPTION

[0048] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0049] like Figures 1 to 4 The figure shows an embodiment of a hydrogenator with a flow regulating function of the present invention, comprising a hydrogenator main unit 13, a hydrogenation pipeline system arranged in the hydrogenator main unit 13, a hydrogenation hose 11 and a hydrogenation gun 12 are arranged at the output end of the hydrogenation pipeline system, a mass flow meter and a flow regulating valve are respectively arranged on the hydrogenation pipeline system, and the mass flow meter and the flow regulating valve are respectively connected to the control system of the hydrogenator main unit 13.

[0050] In the above technical solution, a flow regulating valve is provided on the pipeline of the hydrogenator, which is connected to the control system. The control system controls the flow regulating valve in real time according to the flow information of the mass flow meter, thereby realizing accurate control of the flow.

[0051] Preferably, a PID regulator is provided in the control system, and the control system realizes flow regulation of the flow regulating valve through the PID regulator.

[0052] The above control system adopts PID regulator for flow regulation, which has the advantages of good regulation stability and reliable operation.

[0053] As a preferred solution of this embodiment, the hydrogenation pipeline system is also provided with an adjustable throttling orifice plate for safety flow limiting.

[0054] Preferably, the control flow rate set by the flow regulating valve is smaller than the limiting flow rate set by the adjustable throttling orifice.

[0055] By combining the flow control valve capable of high-precision regulation and control with the adjustable throttling orifice plate, the high-precision control advantage of the flow control valve is fully utilized on the one hand, and the reliable flow limiting advantage of the adjustable throttling orifice plate is fully utilized on the other hand. The combination of the two greatly enhances the safety of the hydrogenation machine under high-precision flow regulation.

[0056] As a further improvement of the present embodiment, a break valve 1 is arranged between the hydrogenation hose 11 and the hydrogenation gun 12, and a break valve safety inspector 2 for regularly detecting the safety status of the break valve 1 is arranged on the break valve 1, and the break valve safety inspector 2 includes a first flange 3 fixedly connected to one end of the break valve 1, a second flange 9 slidably connected to the outer circle of the other end of the break valve 1, and an outer cylinder 5 hollowly sleeved on the periphery of the break valve 1, one end of the outer cylinder 5 is integrally connected to the first flange 3, and the other end of the outer cylinder 5 is detachably connected to the second flange 9, and after the first flange 3, the second flange 9 and the outer cylinder 5 are connected, a closed cavity 6 is formed between the outer circle of the break valve 1, and a third flange 4 is fixedly arranged on the outer circle of the break valve 1 near the second flange 9 in the closed cavity 6, a bellows 8 is connected between the third flange 4 and the second flange 9, and a pressure gauge 7 for detecting the internal pressure of the closed cavity 6 is arranged on the outer cylinder 5.

[0057] When the breakaway valve 1 is in normal use, the connection between the outer cylinder 5 and the second flange 9 is in a detachable state (no connector is installed at the connection); when it is necessary to conduct a real-time security inspection of the breakaway valve 1 in use, the outer cylinder 5 and the second flange 9 are fixed together using the connector 14, and then the breakaway valve 1 is disengaged using external force. Since the disengaged portion of the breakaway valve 1 is in the closed cavity 6, even if the breakaway valve 1 fails and hydrogen leaks, it will not leak out. At the same time, by observing the pressure change of the pressure gauge 7, it can be determined whether the breakaway valve 1 is normal. After the security inspection, the connector 14 between the outer cylinder 5 and the second flange 9 is removed, and the two halves of the breakaway valve 1 are reconnected together, and it can be put into normal use.

[0058] By providing the breakaway valve safety inspector 2 on the breakaway valve 1, regular real-time safety inspection of the hydrogenator during use is achieved, thereby preventing hydrogen leakage caused by failure of the breakaway valve 1, thereby improving the safety of the hydrogenator.

[0059] Preferably, a sealing ring 10 is provided between the third flange 4 and the second flange 9 , and the sealing ring 10 is located at the periphery of the bellows 8 .

[0060] As one of the ways of disposing the sealing ring 10 between the third flange 4 and the second flange 9 , the sealing ring 10 is connected to the end surface of the third flange 4 .

[0061] As a second arrangement mode of the sealing ring 10 between the third flange 4 and the second flange 9, the sealing ring 10 is connected to the end surface of the second flange 9.

[0062] The setting of the sealing ring 10 between the third flange 4 and the second flange 9 can ensure that when the break valve 1 is inspected, the sealing ring 10 contacts the third flange 4 and the second flange 9 at the same time after the break valve 1 is pulled open. When hydrogen leakage occurs, the high-pressure hydrogen can further push the third flange 4 toward the second flange 9, thereby forming a more reliable seal and protecting the bellows 8, thereby further improving the reliability of the break valve safety inspector 2.

[0063] Preferably, a limiting screw 17 for preventing the second flange 9 from sliding out of the breakaway valve 1 is further provided between the second flange 9 and the third flange 4 .

[0064] Preferably, a screw connection hole is provided on the second flange 9, and a screw penetration hole is provided on the third flange 4, and the threaded head of the limit screw 17 passes through the screw penetration hole and is connected to the screw connection hole.

[0065] By setting a limit screw 17 between the second flange 9 and the third flange 4, on the one hand, the second flange 9 can be prevented from sliding out of the breakaway valve 1, and on the other hand, the expansion and contraction of the bellows 8 can be ensured to be within a reasonable range, thereby preventing the bellows 8 from exceeding the expansion and contraction stroke and being damaged.

[0066] As a further improvement of this embodiment, a magnetic ring 18 in contact with the end surface of the outer cylinder 5 is fixed on the second flange 9 .

[0067] The above-mentioned magnetic connection between the end face of the outer cylinder 5 and the second flange 9 is achieved by setting the magnetic ring 18, which is beneficial for the outer cylinder 5 and the second flange 9 to be connected together through the effect of magnetism when the break valve 1 is used normally (the connection between the outer cylinder 5 and the second flange 9 is not equipped with a connecting piece 14), thereby helping to protect the parts in the closed cavity 6 from being affected by external dust, thereby further improving the adaptability and reliability of the break valve safety inspector 2.

[0068] In this embodiment, the detachable connection between the outer cylinder 5 and the second flange 9 is a bolt 14 connection.

[0069] In this embodiment, a microchannel heat exchanger is also provided on the hydrogenation pipeline system.

[0070] A microchannel heat exchanger is installed on the pipeline of the hydrogenation machine, and the microchannel heat exchanger is connected between the pipeline between the mass flow meter and the hydrogenation hose. During the hydrogenation operation, hydrogen enters the air intake pipeline of the hydrogenation machine from the gas source interface of the hydrogenation machine host, and then passes through the gas filter, air intake valve, mass flow meter, microchannel heat exchanger, hydrogenation hose, break valve, hydrogenation gun, and then is filled into the vehicle gas cylinder through the vehicle hydrogenation port.

[0071] Compared with the hydrogenation machine in the prior art, in this embodiment, a microchannel heat exchanger is arranged on the pipeline of the hydrogenation machine. The volume of the microchannel heat exchanger is much smaller than that of the water-cooled unit (the volume of the selected microchannel heat exchanger is only about the size of a 14-inch computer and the thickness is only 100mm). It can be installed inside the hydrogenation machine main unit, thereby realizing the integrated installation of the hydrogenation machine main unit and the cooling system, thereby reducing the footprint of the equipment and reducing the workload of on-site installation of the equipment.

[0072] In addition, the built-in installation of the microchannel heat exchanger in the hydrogenation machine main unit overcomes the disadvantage of the traditional high-pressure hydrogenation machine using an external chiller that requires laying longer pipelines, thereby improving the equipment reliability and effectively improving the efficiency of the cooling system.

[0073] Preferably, the control system is a PLC control system or a microcomputer control system.

[0074] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hydrogenation machine with flow regulation function, characterized in that: The invention comprises a hydrogenation machine main body, a hydrogenation pipeline system arranged in the hydrogenation machine main body, a hydrogenation hose and a hydrogenation gun are arranged at the output end of the hydrogenation pipeline system, a mass flow meter and a flow regulating valve are respectively arranged on the hydrogenation pipeline system, and the mass flow meter and the flow regulating valve are respectively connected to the control system of the hydrogenation machine main body; a microchannel heat exchanger is also arranged on the hydrogenation pipeline system; the microchannel heat exchanger is connected between the mass flow meter and the pipeline between the hydrogenation hose, and the microchannel heat exchanger is installed in a built-in manner on the hydrogenation machine main body; a break valve is arranged between the hydrogenation hose and the hydrogenation gun, and a break valve safety detector for regularly detecting the safety status of the break valve is arranged on the break valve, and the break valve safety detector comprises a first flange fixedly connected to one end of the break valve, a second flange slidably connected to the outer circle of the other end of the break valve, and an outer cylinder body hollowly sleeved on the outer periphery of the break valve, one end of the outer cylinder body is integrally connected to the first flange, and the outer cylinder body The other end is detachably connected to the second flange, and after the first flange, the second flange and the outer cylinder are connected, a closed cavity is formed between the outer circle of the break valve, and a third flange is fixedly arranged on the outer circle of the break valve close to the second flange in the closed cavity, a bellows is connected between the third flange and the second flange, and a pressure gauge for detecting the internal pressure of the closed cavity is arranged on the outer cylinder; a raised portion located at the periphery of the bellows is arranged on the end face of the third flange on the side close to the second flange, and a distance is arranged between the raised portion on the third flange and the second flange, a sealing ring is arranged between the raised portion of the third flange and the second flange, and the sealing ring is located at the periphery of the bellows; after the break valve is opened, the sealing ring contacts the third flange and the second flange at the same time, and when hydrogen leakage occurs, the high-pressure hydrogen further pushes the third flange to the second flange, thereby forming a more reliable seal.

2. A hydrogenation machine with flow regulation function according to claim 1, characterized in that: The control system is provided with a PID regulator, and the control system realizes flow regulation of the flow regulating valve through the PID regulator.

3. A hydrogenation machine with flow rate regulation function according to claim 1, characterized in that: The hydrogenation pipeline system is also provided with an adjustable throttling orifice plate for safety flow limiting.

4. A hydrogenation machine with flow rate regulation function according to claim 3, characterized in that: The control flow rate set by the flow regulating valve is less than the limiting flow rate set by the adjustable throttling orifice.

5. The hydrogenation machine with flow rate regulation function according to claim 1, characterized in that: The sealing ring is connected to the end surface of the raised portion of the third flange.

6. The hydrogenation machine with flow rate regulation function according to claim 1, characterized in that: The sealing ring is connected to the end surface of the second flange.

7. The hydrogenation machine with flow rate regulation function according to claim 1, characterized in that: A limiting screw for preventing the second flange from sliding out of the breakaway valve is also arranged between the second flange and the third flange.

8. The hydrogenation machine with flow rate regulation function according to claim 1, characterized in that: A magnetic ring in contact with the end surface of the outer cylinder is fixed on the second flange.

9. The hydrogenation machine with flow rate regulation function according to claim 1, characterized in that: The detachable connection between the outer cylinder and the second flange is a bolt connection.

Images