Pressure regulator with linkage cylinder valve cut-off function

Abstract

The invention discloses a pressure regulator with a linkage cylinder valve cut-off function. The pressure regulator comprises a valve body, a pressure regulating assembly, a cut-off assembly and a detection assembly. The pressure adjusting assembly is used for dividing the interior of the valve body into a pressure adjusting cavity and a valve cavity and adjusting the gas pressure. The cut-off assembly comprises a reciprocating driving unit and a cut-off unit, the reciprocating driving unit drives a cut-off sliding block to ascend and descend in a reciprocating mode through an electromagnetic chuck, then the cut-off unit is driven to directly act on the self-closing end of the cylinder valve, and opening and closing of the cylinder valve are achieved. The cylinder valve connecting part is used for tight connection and sealing between the pressure regulator and the cylinder valve; and the detection assembly is installed in the valve cavity and used for monitoring the leakage condition and the on-off state of the pressure regulator in real time and feeding signals back to the control unit to form closed-loop control, and through the linkage design of the cut-off assembly and the detection assembly, the use safety and convenience of the pressure regulator are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of pressure regulating equipment technology, and specifically to a pressure regulator with a linkage bottle valve shut-off function. Background Technology

[0002] Liquefied petroleum gas (LPG), as an important clean energy source, is highly favored due to its high calorific value, non-toxicity, and ease of use. However, bottled LPG has complex usage scenarios and is more prone to leakage accidents compared to piped natural gas. Moreover, its density is greater than that of air, making it easy to accumulate after leakage. In addition, the handwheel seal of the pressure regulator of bottled LPG is prone to deformation, damage, or even loss due to long-term pressure, which can lead to LPG leakage. As a result, many regions have even banned the use of bottled LPG. Therefore, the market urgently needs a design solution to ensure its safe use.

[0003] Currently, conventional shut-off regulators integrate the electromagnetic shut-off valve with the bottled liquefied petroleum gas (LPG) regulator. These regulators are controlled by a gas detector, cutting off the gas supply when a leak or abnormality is detected. However, the shut-off device is located inside the regulator and cannot protect against leaks at the handwheel seal. Relying solely on a gas detector is a reactive measure after a leak, and cannot predict external gas leaks. Furthermore, conventional shut-off regulators have a large number of connection points, which increases the risk of external leaks.

[0004] Therefore, it is necessary to provide a pressure regulator with a linkage bottle valve shut-off function to solve the problems mentioned in the background art. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pressure regulator with a linked bottle valve shut-off function, comprising: a valve body and a pressure regulating component. The pressure regulating component is installed in the valve body, which is used to divide the valve body into an independent pressure regulating chamber and a valve chamber, and to regulate the gas pressure entering the valve chamber. A flow channel is provided through the valve body, which communicates with the valve chamber. An installation cavity is provided in the air inlet section of the flow channel, which is located in the valve chamber. A shut-off component is installed in the installation cavity. A bottle valve connection part is provided at the air inlet end of the flow channel, which is used to connect the pressure regulator and the bottle valve. The cutting-off assembly includes a reciprocating drive unit and a cutting-off unit. The reciprocating drive unit is slidably installed in the mounting cavity, and the cutting-off unit is installed in the air inlet section of the flow channel and extends through the bottle valve connection to the self-closing end of the bottle valve. The cutting-off unit elastically abuts against the reciprocating drive unit, and the cutting-off unit is driven by the reciprocating drive unit to directly act on the self-closing end of the bottle valve to realize the opening and closing of the bottle valve. A detection component is installed inside the valve chamber to monitor the on / off state of the pressure regulator in real time and feed the monitoring signal back to the control unit. The control unit controls the reciprocating drive unit to perform corresponding actions based on the feedback signal.

[0006] Preferably, the reciprocating drive unit includes: A limiting cylinder is coaxially fixed at one end of the mounting cavity. An assembly cavity is formed at both ends of the limiting cylinder through a horizontal partition. A pin is coaxially inserted inside the limiting cylinder. A cutting slider is installed at the bottom end of the pin through the partition and the cutting slider is spaced apart from the inner wall of the mounting cavity. The cutting slider is elastically connected to the bottom end of the mounting cavity via a cutting spring; A reset button is fixedly installed at the top of the pin, and the top of the reset button protrudes from the top of the valve body. An electromagnetic chuck is fixed in the assembly cavity at the upper end, and the pin can be slidably inserted into the electromagnetic chuck. In the natural state, the reset button and the electromagnetic chuck are spaced apart. The electromagnetic chuck and the limiting cylinder are magnetically attracted to each other. It is used to control the cutting slider to reciprocate and move up and down, and drive the cutting unit to cut or open the bottle valve in linkage.

[0007] Preferably, a sealing sleeve is fixedly provided on the shaft of the pin, and the sealing sleeve is slidably and sealingly connected to the inner wall of the assembly cavity at the lower end.

[0008] Preferably, the bottom of the cutting slider is provided with a mounting hole, and the top of the mounting hole is elastically connected to the bottom of the mounting cavity by the cutting spring; the side of the cutting slider near the cutting unit is provided with a guide slope, and a limit structure is provided on the opposite side of the guide slope. The limit structure is a U-shaped plate structure with the opening facing downward, and a column is provided directly below the limit structure. The column is fixed to the bottom of the mounting cavity.

[0009] Preferably, the reciprocating drive unit further includes: a steel ball and a flow-through sealing ring; the steel ball is movably disposed between the limiting structure, the column, and the inner wall of the mounting cavity, and the height of the column, the diameter of the steel ball, and the height of the limiting structure satisfy the following: during the up-and-down movement of the cutting slider, the steel ball is always within the U-shaped plate structure of the limiting structure; the flow-through sealing ring is installed at one end of the flow channel near the steel ball; The height of the steel ball is naturally slightly lower than the through hole of the overcurrent sealing ring, so that it can cooperate with the overcurrent sealing ring to form a seal when the voltage regulator is overcurrent.

[0010] Preferably, the bottle valve connection includes: The second limiting cylinder is coaxially and sealed at the air inlet end of the flow channel. A limiting hole is opened inside the second limiting cylinder. An adjusting nut is fitted on the outer side of the second limiting cylinder near the air inlet end of the flow channel. An external thread is opened on the outer periphery of the adjusting nut near the bottle valve, and a rotating part is provided on the other side. The limiting cylinder 2 is fixedly provided with a sealing valve cylinder at one end near the bottle valve. An installation groove is opened at one end of the limiting cylinder 2 near the sealing valve cylinder. A sealing ring 1 is installed in the installation groove. The diameter of the sealing ring 1 is larger than the diameter of the sealing valve cylinder.

[0011] Preferably, the cutting unit includes: An opening and closing rod is slidably inserted into the air inlet section of the flow channel and the limiting hole of the second limiting cylinder. An L-shaped limiting plate is axially arranged on the opening and closing rod body. Several L-shaped limiting plates are arranged around the opening and closing rod. The short end of the L-shaped limiting plate is located in the air inlet section of the flow channel and is spaced apart from the end of the second limiting cylinder. An opening and closing spring is sleeved on the outside of the opening and closing rod. The opening and closing spring is elastically supported between the short end of the L-shaped limiting plate and the end of the second limiting cylinder, so that the opening and closing rod elastically abuts against the cutting slider. The opening and closing rod is coaxially mounted with an opening and closing valve core on the side away from the cutting slider. The opening and closing valve core has a conical structure and is adapted to the sealing end of the sealing valve cylinder.

[0012] Preferably, the valve core and the end of the valve rod are spaced apart, and a limiting protrusion is provided axially on the side of the valve rod near the bottle valve. Several limiting protrusions are arranged circumferentially along the valve rod, and the limiting protrusions slide in cooperation with the inner wall of the vent of the bottle valve.

[0013] Preferably, the end of the vent of the bottle valve is provided with a multi-stage stepped hole that is adapted to the outer diameter of the sealing ring and the adjusting nut.

[0014] Preferably, the detection component includes a gas pressure sensor and a position detection sensor. The gas pressure sensor is installed in the valve cavity and is used to detect the pressure change in the valve cavity before and after the valve is closed, and transmits the pressure data to the control unit for leakage judgment. The position detection sensor is installed in the valve cavity and located on the side of the reset button. It is used to detect the position of the reset button and feed back the position status signal to the control unit to realize the confirmation of the linkage cut-off state and closed-loop control.

[0015] Compared with the prior art, the present invention provides a pressure regulator with a linkage bottle valve shut-off function, which has the following advantages: 1. By incorporating a shut-off component, the regulator and cylinder valve are linked for coordinated control. The shut-off unit is positioned at the self-closing end of the cylinder valve, utilizing the regulator to control the opening and closing of the valve's self-closing device. In the event of a regulator malfunction or leakage, the cylinder valve can be quickly and automatically shut off, preventing further gas leakage. Even if external leakage occurs at the handwheel seal, the shut-off remains effective. Compared to conventional shut-off regulators that cannot protect against leaks at the handwheel seal, this significantly improves the regulator's safety and effectively reduces the risk of accidents caused by liquefied petroleum gas leaks. 2. By installing the detection component inside the valve chamber, the leakage situation and the on / off status of the regulator can be monitored in real time, and the monitoring signal is fed back to the control unit. The control unit controls the cut-off component to act in advance based on the feedback signal, realizing the linkage cut-off of the cylinder valve. This design changes the existing conventional cut-off type regulators that rely solely on gas detectors for defense and remediation after gas leakage. It can predict gas leakage in advance, take timely measures to prevent the leakage from expanding further, and reduce potential losses and hazards. 3. The steel ball and overcurrent sealing ring in the reciprocating drive unit allow gas to pass smoothly during normal operation of the pressure regulator. When an overcurrent fault occurs, the gas velocity increases significantly, pushing the steel ball to tightly adhere to the overcurrent sealing ring, forming a seal, blocking the flow path, stopping gas flow, and achieving overcurrent cut-off. This overcurrent cut-off function provides another layer of protection for the safe use of the pressure regulator, effectively preventing safety accidents caused by overcurrent. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the assembly structure of the pressure regulator and the bottle valve of the present invention; Figure 2 This is a schematic cross-sectional view of the voltage regulator of the present invention. Figure 1 ; Figure 3 This is a schematic cross-sectional view of the voltage regulator of the present invention. Figure 2 ; Figure 4 This is a cross-sectional view of the bottle valve and the connection part of the bottle valve according to the present invention; Figure 5 This is a schematic diagram of the cutting slider structure of the present invention; In the diagram: 1. Valve body; 2. Pressure regulating chamber; 3. Valve cavity; 4. Flow channel; 5. Pressure regulating assembly; 6. Mounting cavity; 7. Cut-off assembly; 8. Bottle valve connection; 9. Detection assembly; 71. Reciprocating drive unit; 72. Cut-off unit; 711. Limit cylinder one; 712. Pin; 713. Cut-off slider; 714. Cut-off spring; 715. Reset button; 716. Electromagnetic chuck; 717. Steel ball; 718. Through 719. Flow sealing ring; 721. Sealing sleeve; 722. Opening and closing rod; 723. L-shaped limiting plate; 724. Opening and closing spring; 725. Opening and closing valve core; 726. Limiting protrusion; 81. Limiting cylinder two; 82. Adjusting nut; 83. Sealing ring one; 84. Sealing valve cylinder; 91. Gas pressure sensor; 92. Position detection sensor; 7131. Mounting hole; 7132. Limiting structure; 7133. Guide slope. Detailed Implementation

[0017] Please see Figure 1-5 This invention provides a pressure regulator with a linked bottle valve shut-off function, comprising: a valve body 1 and a pressure regulating component 5. The pressure regulating component 5 is installed inside the valve body 1. The pressure regulating component 5 is used to divide the valve body 1 into independent pressure regulating chambers 2 and valve chambers 3, and to regulate the gas pressure entering the valve chamber 3. A flow channel 4 is provided through the valve body 1, and the flow channel 4 is connected to the valve chamber 3. An installation cavity 6 is provided in the air inlet section of the flow channel 4. The installation cavity 6 is located inside the valve chamber 3, and a shut-off component 7 is installed in the installation cavity 6. A bottle valve connection part 8 is provided at the air inlet end of the flow channel 4, and the bottle valve connection part 8 is used to connect the pressure regulator and the bottle valve. The cutting-off assembly 7 includes a reciprocating drive unit 71 and a cutting-off unit 72. The reciprocating drive unit 71 is slidably installed in the mounting cavity 6. The cutting-off unit 72 is installed in the air inlet section of the flow channel 4 and extends through the bottle valve connection part 8 to the self-closing end of the bottle valve. The cutting-off unit 72 elastically abuts against the reciprocating drive unit 71. The reciprocating drive unit 71 drives the cutting-off unit 72 to directly act on the self-closing end of the bottle valve, thereby realizing the opening and closing of the bottle valve. The valve chamber 3 is equipped with a detection component 9, which is used to monitor the on / off state of the pressure regulator in real time and feed the monitoring signal back to the control unit. The control unit controls the reciprocating drive unit 71 to perform corresponding actions according to the feedback signal.

[0018] Specifically, an installation groove is formed at the bottom of the valve body 1, and a pressure regulating component 5 is installed in the installation groove. The output end of the pressure regulating component 5 (i.e., the pressure regulating acting component) is located in the flow channel 4 and is close to the gas outlet section side of the flow channel 4 for regulating the gas outlet volume of the flow channel 4. The flow channel 4 at least includes an air inlet section and an air outlet section, and the outer peripheral sides of both the air inlet section and the air outlet section serve as regulator connectors. The self-closing end of the bottle valve refers to the end that can automatically cut off when linked with the regulator control. The pressure regulating component 5 is a mature pressure regulating structure in the prior art, specifically including a diaphragm, a lever, a spring, etc. For example, the pressure regulating component disclosed in the Chinese patent with the publication number CN114776876A and the name of gas pressure regulator and pressure regulator equipment will not be elaborated here. In this application, the structure of the pressure regulating component 5 is the same as that in the above patent. The valve body 1 is separated into a pressure regulating chamber 2 and a valve chamber 3 by a diaphragm. The output end of the pressure regulating component 5, i.e., the push rod and the sealing gasket installed on the push rod, etc., drives the push rod to move through a lever to regulate the gas flow volume flowing from the air inlet section of the flow channel 4 into the valve chamber 3.

[0019] When the regulator works normally, the pressure regulating component 5 controls the regulator to be in an open state. High-pressure gas flows out of the bottle valve, enters the air inlet section of the flow channel 4 through the bottle valve connecting part 8, and then enters the valve chamber 3 after the gas pressure is regulated to the set range through the regulation of the pressure regulating component 5, and finally is output from the gas outlet end of the valve body 1 for users to use. When the detection component 9 detects that the pressure in the valve chamber 3 is abnormal (such as overpressure of the regulator), it feeds back the monitoring signal to the control unit (using a PLC controller). The control unit issues a control instruction to control the reciprocating drive unit 71 in the cut-off component 7 to act. The reciprocating drive unit 71 moves upward, and the cut-off unit 72 automatically moves towards the self-closing end of the bottle valve to achieve the linked cut-off of the bottle valve. When the fault is eliminated, the reciprocating drive unit 71 is controlled by the control unit to reset, so that the cut-off unit 72 disengages from the self-closing end of the bottle valve, and the bottle valve is reopened, and the regulator resumes normal operation.

[0020] Among them, by setting the cut-off component 7, the linked control of the regulator and the bottle valve is realized, and the cut-off unit 72 is arranged at the self-closing end of the bottle valve. The opening and closing of the self-closing device of the bottle valve are controlled through the linked control of the regulator. When the regulator is abnormal or leaks, the bottle valve can be quickly and automatically cut off to prevent gas from continuing to leak. Even if there is an external leak at the handwheel sealing ring, the cut-off is still effective, greatly improving the use safety of the regulator. And this invention has the same number of connectors (two) as the traditional regulator, avoiding the problems of many connectors and easy leakage in the prior art.

[0021] Furthermore, the reciprocating drive unit 71 includes: A limiting cylinder 711 is coaxially fixed at one end of the mounting cavity 6. An assembly cavity is formed at both ends of the limiting cylinder 711 by a horizontal partition. A pin 712 is coaxially inserted inside the limiting cylinder 711. The bottom end of the pin 712 slides and seals through the partition and is fitted with a cutting slider 713. The cutting slider 713 is spaced apart from the inner wall of the mounting cavity 6. The cutting slider 713 is elastically connected to the bottom end of the mounting cavity 6 by a cutting spring 714; A reset button 715 is fixedly installed at the top of the pin 712. The top of the reset button 715 protrudes from the top of the valve body 1. An electromagnetic chuck 716 is fixed in the assembly cavity at the upper end. The pin 712 can be slidably inserted into the electromagnetic chuck 716. In the natural state, the reset button 715 and the electromagnetic chuck 716 are spaced apart. The electromagnetic chuck 716 and the limiting cylinder 711 can be magnetically attracted to each other. It is used to control the cutting slider 713 to reciprocate and drive the cutting unit 72 to cut or open the bottle valve in linkage.

[0022] It should be explained that the electromagnetic chuck 716 is electrically connected to the control unit, and the control unit controls the opening or closing of the bottle valve by controlling the on / off state of the electromagnetic chuck 716. The reset button 715 is made of ferromagnetic material.

[0023] When the regulator is turned off at a set time or remotely turned off, the electromagnetic chuck 716 is not energized and has no magnetic force. Under the elastic force of the cutting spring 714, the cutting slider 713 moves upward, and the pin 712 drives the reset button 715 to a high position, maintaining a distance from the electromagnetic chuck 716. At this time, the cutting unit 72 is in contact with the self-closing end of the bottle valve, and the bottle valve is in the closed state. When it is necessary to open the bottle valve, the control unit controls the electromagnetic chuck 716 to be energized. The electromagnetic chuck 716 generates magnetic force, attracting the reset button 715. The reset button 715 drives the pin 712 to slide downward. The pin 712 pushes the cutting slider 713 to compress the cutting spring 714 and move it to the bottom of the mounting cavity 6. At the same time, the cutting slider 713 pushes the cutting unit 72 to separate from the self-closing end of the bottle valve, realizing the opening of the bottle valve.

[0024] Furthermore, a sealing sleeve 719 is fixedly provided on the shaft body of the pin 712, and the sealing sleeve 719 is slidably and sealingly connected to the inner wall of the assembly cavity at the lower end. The sealing sleeve 719 is made of nitrile rubber and is fixedly sleeved on the shaft body of the pin 712 by interference fit. At least two annular sealing lips are coaxially sleeved on the outer periphery of the sealing sleeve 719 to enhance its sealing performance.

[0025] Furthermore, the bottom of the cutting slider 713 is provided with a mounting hole 7131, and the top of the mounting hole 7131 is elastically connected to the bottom of the mounting cavity 6 through the cutting spring 714; the cutting slider 713 is provided with a guide slope 7133 on the side near the cutting unit 72, and a limiting structure 7132 is provided on the opposite side of the guide slope 7133. The limiting structure 7132 is a U-shaped plate structure with the opening facing downward. A column is provided directly below the limiting structure 7132, and the column is fixed to the bottom of the mounting cavity 6.

[0026] Furthermore, the reciprocating drive unit 71 also includes a steel ball 717 and a flow-through sealing ring 718. The steel ball 717 is movably disposed between the limiting structure 7132, the column, and the inner wall of the mounting cavity 6. The height of the column, the diameter of the steel ball 717, and the height of the limiting structure 7132 satisfy the following: during the up-and-down movement of the cutting slider 713, the steel ball 717 remains within the U-shaped plate structure of the limiting structure 7132. The flow-through sealing ring 718 is installed at one end of the flow channel 4 near the steel ball 717. The specific dimensional ratio is: column height H1 = 5-8mm, steel ball diameter D = 6-8mm, limiting structure height H2 = 10-12mm, satisfying H1 + D ≤ H2, ensuring that when the cutting slider 713 is at its lowest position, the steel ball 717 remains within the U-shaped opening and will not fall off. The height of the steel ball 717 is naturally slightly lower than the through hole of the overcurrent sealing ring 718, and is used to cooperate with the overcurrent sealing ring 718 to form a seal when the voltage regulator is overcurrent.

[0027] Specifically, when the pressure regulator is working normally, the gas flow rate is within the set range. Under the action of its own weight and the gas impact force, the steel ball 717 is at the bottom of the U-shaped opening of the limiting structure 7132, in contact with the top of the column. At this time, the height of the steel ball 717 is lower than the inner diameter of the overcurrent sealing ring 718, and the gas can pass smoothly through the gap between the steel ball 717 and the overcurrent sealing ring 718, and the flow channel 4 is unobstructed. When the pressure regulator has an overcurrent fault, the gas velocity in the flow channel 4 increases significantly, and the impact force of the gas on the steel ball 717 increases. The impact force overcomes the weight of the steel ball 717. The limiting structure 7132 restricts the movement of the steel ball 717 upwards. The steel ball 717 fits tightly against the overcurrent sealing ring 718 to form a seal, blocking the flow channel 4, stopping the gas flow, and achieving overcurrent cut-off. When the overcurrent fault is cleared, pressing the reset button 715 causes the cut-off slider 713 to touch the steel ball 717 to release the overcurrent cut-off state. The gas flow returns to normal, the impact force of the gas on the steel ball 717 decreases, and the steel ball 717 falls back to the bottom of the U-shaped opening of the limiting structure 7132 under its own gravity. The flow channel 4 is unblocked again, and the regulator resumes normal operation.

[0028] Furthermore, the bottle valve connection 8 includes: The second limiting cylinder 81 is coaxially and sealed at the air inlet end of the flow channel 4. The second limiting cylinder 81 has a limiting hole. An adjusting nut 82 is fitted on the outer side of the second limiting cylinder 81 near the air inlet end of the flow channel 4. The outer periphery of the adjusting nut 82 is provided with an external thread near the bottle valve, and a rotating part is provided on the other side. The rotating part is a handwheel type structure. The limiting cylinder 81 is fixedly provided with a sealing valve cylinder 84 at one end near the bottle valve. An installation groove is opened at one end of the limiting cylinder 81 near the sealing valve cylinder 84. A sealing ring 83 is installed in the installation groove. The diameter of the sealing ring 83 is larger than the diameter of the sealing valve cylinder 84.

[0029] Specifically, the limiting cylinder 81 is located on the outer periphery of the air inlet side of the flow channel 4 and is connected to the inner wall of the flow channel 4 by a threaded structure. "Limiting sleeve" means that the adjusting nut 82 is sleeved on the outside of the limiting cylinder 81, and the axial movement of the adjusting nut 82 is restricted by the limiting step, so that it can only rotate around the limiting cylinder 81.

[0030] When the pressure regulator is connected to the bottle valve, first, the adjusting nut 82 is fitted onto the limiting cylinder 81, then the limiting cylinder 81 is threadedly connected to the air inlet end of the flow channel 4, and a sealing gasket is placed on the connection end face to prevent leakage; then, the sealing ring 83 is installed in the limiting groove, and finally, the external thread of the adjusting nut 82 is engaged with the internal thread of the bottle valve until the adjusting nut 82 and the end of the bottle valve are tightly fitted, thus achieving a fixed and sealed connection between the pressure regulator and the bottle valve. The cutting unit 72 passes through the limiting hole of the limiting cylinder 81 and the sealing valve cylinder 84, extending to the self-closing end of the bottle valve, achieving docking with the self-closing end of the bottle valve; when the cutting unit 72 is activated, the limiting hole of the limiting cylinder 81 guides the cutting unit 72, ensuring that the cutting unit 72 can accurately act on the self-closing end of the bottle valve.

[0031] Furthermore, the cutting unit 72 includes: A control rod 721 is slidably inserted into the air inlet section of the flow channel 4 and the limiting hole of the second limiting cylinder 81. An L-shaped limiting plate 722 is axially arranged on the rod body of the control rod 721. Several L-shaped limiting plates 722 are arranged circumferentially along the control rod 721. The short end of the L-shaped limiting plate 722 is located in the air inlet section of the flow channel 4 and is spaced apart from the end of the second limiting cylinder 81. A control spring 723 is sleeved on the outside of the control rod 721. The control spring 723 is elastically supported between the short end of the L-shaped limiting plate 722 and the end of the second limiting cylinder 81, so that the control rod 721 elastically abuts against the cutting slider 713. The opening and closing rod 721 is coaxially mounted with an opening and closing valve core 724 on the side away from the cutting slider 713. The opening and closing valve core 724 has a conical structure and is adapted to the sealing end of the sealing valve cylinder 84.

[0032] Specifically, the opening and closing spring is in a pre-compression state in its initial state (i.e., the cut-off state), and its clamping force can drive the opening and closing rod 721 to link the opening and closing valve core 724 to seal the sealing valve cylinder 84.

[0033] When the pressure regulator is working normally, the electromagnetic chuck 716 is energized, the cut-off slider 713 moves downward and compresses the cut-off spring 714. Under the action of the guide inclined surface 7133 of the cut-off slider 713, the opening and closing spring 723 is gradually compressed and drives the opening and closing rod 721 to move towards the bottle valve side. At this time, the opening and closing valve core 724 and the sealing valve cylinder 84 are separated, and the medium can flow normally. When the pressure regulator is timed to close or remotely closed and started, the electromagnetic chuck 716 is de-energized. Under the elastic force of the cut-off spring 714, the cut-off slider 713 moves upward, and the opening and closing spring 723 releases its elastic force to drive the opening and closing valve core 724 to fit with the sealing valve cylinder 84, thereby cutting off the self-closing end of the bottle valve.

[0034] Furthermore, the valve core 724 and the end of the valve rod 721 are spaced apart, and the valve rod 721 has a limiting protrusion 725 axially arranged on the side of the rod near the bottle valve. Several limiting protrusions 725 are arranged circumferentially along the valve rod 721. The limiting protrusions 725 slide in cooperation with the inner wall of the air outlet of the bottle valve, ensuring that the valve core 724 can accurately act on the self-closing valve core of the bottle valve, thereby improving the accuracy and reliability of the shut-off action.

[0035] Furthermore, the end of the vent of the bottle valve is provided with a multi-stage stepped hole that is adapted to the outer diameter of the sealing ring 83 and the adjusting nut 82 to precisely fit the outer contour of the bottle valve connection part 8.

[0036] Furthermore, the detection component 9 includes a gas pressure sensor 91 and a position detection sensor 92. The gas pressure sensor 91 is installed in the valve chamber 3 and is used to detect the pressure change in the valve chamber 3 before and after the bottle valve is closed, and transmits the pressure data to the control unit for leakage judgment. The position detection sensor 92 is installed in the valve chamber 3 and located on the side of the reset button 715. It is used to detect the position of the reset button 715 and feed back the position status signal to the control unit to realize the confirmation of the linkage cut-off state and closed-loop control.

[0037] Specifically, the leakage detection method includes: before the valve is closed, the pressure in the valve chamber is stable within the pressure regulation range; after the valve is closed, the valve chamber is in a sealed state, and if there is no leakage, the pressure remains basically stable; if there is leakage, the pressure will gradually decrease. The control unit determines whether there is leakage by comparing the pressure difference before and after closing (difference within 5 minutes), rather than simply detecting a single pressure value. The position detection sensor is a Hall effect proximity switch, photoelectric proximity switch, etc. The Hall effect proximity switch or photoelectric proximity switch has its detection end positioned directly opposite the movement path of the reset button 715. When the reset button 715 rises to a high position with the pin 712 and the bottle valve is in a linked cut-off state, the reset button 715 approaches the detection end of the position detection sensor 92, and the position detection sensor 92 outputs a first-level signal (e.g., high level) to the control unit, indicating that the bottle valve is closed. When the reset button 715 is pressed down to a low position with the pin 712 and the bottle valve is in an open state, the reset button 715 moves away from the detection end of the position detection sensor 92, and the position detection sensor 92 outputs a second-level signal (e.g., low level) to the control unit, indicating that the bottle valve is open. The control unit confirms whether the reciprocating drive unit 71 and the cut-off unit 72 have been executed correctly based on the signal from the position detection sensor 92, avoiding a runaway state where the command and the actual action are inconsistent, and realizing closed-loop control.

[0038] In practice, when the pressure regulator is working normally, the pressure regulating component 5 controls the pressure regulator to be in the open state. High-pressure gas flows out from the bottle valve, enters the air inlet section of the flow channel 4 through the bottle valve connection part 8, and then the pressure is adjusted to the set range by the pressure regulating component 5 before entering the valve chamber 3. Finally, it is output from the outlet end of the valve body 1 for user use. When the detection component 9 detects an abnormal pressure in the valve chamber 3, it feeds the monitoring signal back to the control unit. The control unit issues a control command to control the reciprocating drive unit 71 in the cut-off component 7 to move. The reciprocating drive unit 71 moves upward, and the cut-off unit 72 automatically moves to the self-closing end of the bottle valve to realize the linkage cut-off of the bottle valve. When the fault is cleared, the control unit controls the reciprocating drive unit 71 to reset, so that the cut-off unit 72 disengages from the self-closing end of the bottle valve, the bottle valve reopens, and the pressure regulator resumes normal operation.

[0039] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pressure regulator with linked bottle valve shut-off function, comprising: The valve body (1) and pressure regulating component (5) are provided. The pressure regulating component (5) is installed inside the valve body (1). The pressure regulating component (5) divides the valve body (1) into independent pressure regulating chambers (2) and valve chambers (3) and regulates the gas pressure entering the valve chamber (3). The valve body (1) is characterized by having a flow channel (4) that is connected to the valve chamber (3). The pressure regulating component (5) regulates the gas flow rate entering the valve chamber (3) by adjusting the connection between the flow channel (4) and the valve chamber (3). The inlet section of the flow channel (4) is provided with an installation chamber (6). The installation chamber (6) is located inside the valve chamber (3). A cut-off component (7) is installed inside the installation chamber (6). The inlet end of the flow channel (4) is provided with a bottle valve connection part (8). The bottle valve connection part (8) is used to connect the pressure regulator and the bottle valve. The cutting-off assembly (7) includes a reciprocating drive unit (71) and a cutting-off unit (72). The reciprocating drive unit (71) is slidably installed in the mounting cavity (6). The cutting-off unit (72) is installed in the air inlet section of the flow channel (4) and extends through the bottle valve connection part (8) to the self-closing end of the bottle valve. The cutting-off unit (72) elastically abuts against the reciprocating drive unit (71). The cutting-off unit (72) is driven by the reciprocating drive unit (71) to directly act on the self-closing end of the bottle valve, thereby realizing the opening and closing of the bottle valve. The valve chamber (3) is equipped with a detection component (9) for real-time monitoring of the on / off state of the pressure regulator and feeding back the monitoring signal to the control unit. The control unit controls the reciprocating drive unit (71) to perform corresponding actions based on the feedback signal.

2. A pressure regulator with a linkage bottle valve shut-off function according to claim 1, characterized in that, The reciprocating drive unit (71) includes: A limiting cylinder (711) is coaxially fixed at one end of the mounting cavity (6). The limiting cylinder (711) forms assembly cavities at both ends through a horizontal partition. A pin (712) is coaxially inserted inside the limiting cylinder (711). The bottom end of the pin (712) slides through the partition and is fitted with a cutting slider (713). The cutting slider (713) is spaced apart from the inner wall of the mounting cavity (6). The cutting slider (713) is elastically connected to the bottom end of the mounting cavity (6) by a cutting spring (714); A reset button (715) is fixedly installed at the top of the pin (712). The top of the reset button (715) protrudes from the top of the valve body (1). An electromagnetic chuck (716) is fixed in the assembly cavity at the upper end. The pin (712) can be slidably inserted into the electromagnetic chuck (716). In its natural state, the reset button (715) and the electromagnetic chuck (716) are spaced apart. The electromagnetic chuck (716) and the limiting cylinder (711) can be magnetically attracted to each other. The electromagnetic chuck (716) is used to control the cutting slider (713) to reciprocate and drive the cutting unit (72) to cut or open the bottle valve in linkage.

3. A pressure regulator with a linkage bottle valve shut-off function according to claim 2, characterized in that, A sealing sleeve (719) is fixedly provided on the shaft of the pin (712), and the sealing sleeve (719) is slidably and sealingly connected to the inner wall of the assembly cavity at the lower end.

4. A pressure regulator with a linkage bottle valve shut-off function according to claim 2, characterized in that, The cutting slider (713) has a mounting hole (7131) at its bottom. The top of the mounting hole (7131) is elastically connected to the bottom of the mounting cavity (6) by the cutting spring (714). The cutting slider (713) has a guide slope (7133) on the side near the cutting unit (72). A limit structure (7132) is provided on the opposite side of the guide slope (7133). The limit structure (7132) is a U-shaped plate structure with the opening facing downward. A column is provided directly below the limit structure (7132). The column is fixed at the bottom of the mounting cavity (6).

5. A pressure regulator with a linkage bottle valve shut-off function according to claim 4, characterized in that, The reciprocating drive unit (71) further includes: a steel ball (717) and a flow seal ring (718); the steel ball (717) is movably disposed between the limiting structure (7132) and the column and the inner wall of the mounting cavity (6), and the height of the column, the diameter of the steel ball (717) and the height of the limiting structure (7132) satisfy the following: during the up and down movement of the cutting slider (713), the steel ball (717) is always inside the U-shaped plate structure of the limiting structure (7132); the flow seal ring (718) is installed at one end of the flow channel (4) near the steel ball (717); The height of the steel ball (717) is slightly lower than the through hole of the overcurrent sealing ring (718) in its natural state, so as to cooperate with the overcurrent sealing ring (718) to form a seal when the pressure regulator is overcurrent.

6. A pressure regulator with a linkage bottle valve shut-off function according to claim 4, characterized in that, The bottle valve connection part (8) includes: The second limiting cylinder (81) is coaxially and sealed at the air inlet end of the flow channel (4). The second limiting cylinder (81) has a limiting hole. The outer side of the second limiting cylinder (81) near the air inlet end of the flow channel (4) is fitted with an adjusting nut (82). The outer periphery of the adjusting nut (82) near the bottle valve has an external thread, and the other side has a rotating part. The second limiting cylinder (81) is fixedly provided with a sealing valve cylinder (84) at one end near the bottle valve. An installation groove is opened at one end of the second limiting cylinder (81) near the sealing valve cylinder (84). A sealing ring (83) is installed in the installation groove. The diameter of the sealing ring (83) is larger than the diameter of the sealing valve cylinder (84).

7. A pressure regulator with a linkage bottle valve shut-off function according to claim 6, characterized in that, The cutting unit (72) includes: A control rod (721) is slidably inserted into the air inlet section of the flow channel (4) and the limiting hole of the second limiting cylinder (81). An L-shaped limiting plate (722) is axially arranged on the body of the control rod (721). Several L-shaped limiting plates (722) are arranged around the control rod (721). The short end of the L-shaped limiting plate (722) is located in the air inlet section of the flow channel (4) and is spaced apart from the end of the second limiting cylinder (81). A control spring (723) is sleeved on the outside of the control rod (721). The control spring (723) is elastically supported between the short end of the L-shaped limiting plate (722) and the end of the second limiting cylinder (81), so that the control rod (721) elastically abuts against the cutting slider (713). The opening and closing rod (721) is coaxially mounted with an opening and closing valve core (724) on the side away from the cutting slider (713). The opening and closing valve core (724) has a conical structure and is adapted to the sealing end of the sealing valve cylinder (84).

8. A pressure regulator with a linkage bottle valve shut-off function according to claim 7, characterized in that, The valve core (724) and the end of the valve rod (721) are spaced apart, and a limiting protrusion (725) is provided axially on the side of the valve rod (721) near the bottle valve. A plurality of limiting protrusions (725) are arranged circumferentially along the valve rod (721), and the limiting protrusions (725) slide in cooperation with the inner wall of the air outlet of the bottle valve.

9. A pressure regulator with a linkage bottle valve shut-off function according to claim 6, characterized in that, The outlet end of the bottle valve is provided with a multi-stage stepped hole that is adapted to the outer diameter of the sealing ring (83) and the adjusting nut (82).

10. A pressure regulator with a linkage bottle valve shut-off function according to claim 2, characterized in that, The detection component (9) includes a gas pressure sensor (91) and a position detection sensor (92). The gas pressure sensor (91) is installed in the valve chamber (3) and is used to detect the pressure change in the valve chamber (3) before and after the bottle valve is closed, and transmit the pressure data to the control unit for leakage judgment. The position detection sensor (92) is installed in the valve chamber (3) and located on the side of the reset button (715). It is used to detect the position of the reset button (715) and feed back the position status signal to the control unit to realize the confirmation of the linkage cut-off state and closed-loop control.

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