Intelligent cylinder valve for cutting off liquefied petroleum gas through overflowing
By designing an overflow cutting device in the liquefied petroleum gas cylinder valve and using the airflow impact to push the valve core to block the gas circuit, the problem of automatic cutting in the prior art is solved, and the safety of liquefied petroleum gas is improved.
Patent Information
- Application Number
- CN202421088803.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The bottle valve of existing liquefied petroleum gas cylinders cannot be automatically cut off when the liquefied petroleum gas leaks, which affects the safety of operation and use.
A smart bottle valve for overcurrent cutting of liquefied petroleum gas is designed, equipped with electronic tags and authorized filling devices, and an overcurrent cutting device is installed inside the valve body. When the airflow velocity increases, the device pushes the valve core and its related components upwards through the airflow impact until the gas passage is blocked, thereby realizing the cutting of the air passage.
When the valve flow is too large due to the leakage of LPG, the gas circuit can be cut off accurately and efficiently to avoid further leakage of LPG and improve the safety of bottled LPG use.
Smart Images
Figure CN222458403U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to an over-current cut-off liquefied petroleum gas intelligent bottle valve. Background Art
[0002] In order to protect the personal and property safety of users, liquefied petroleum gas cylinders generally adopt a fixed-point filling method, so as to establish a complete management file for each liquefied petroleum gas cylinder, thereby preventing uninspected or scrapped liquefied petroleum gas cylinders from entering the market.
[0003] However, due to the chaotic management of LPG cylinders by LPG companies and their supply stations, cross-filling of LPG cylinders is common. Most of the current LPG cylinder valves are purely mechanical devices that can only perform simple filling and deflation functions, and cannot promptly detect the reuse of LPG cylinders that have not been inspected or have been scrapped, resulting in serious safety hazards in actual operations.
[0004] On the other hand, the use of bottled liquefied petroleum gas generally requires the corresponding assembly and coordinated adaptation of liquefied petroleum gas cylinders (including liquefied petroleum gas cylinder valves), pressure regulators, hoses, stoves and other functional components. Leakage of the above components themselves and the joints of the components will bring the risk of combustion and explosion, seriously threatening the safety of users' lives and property. In particular, when liquefied petroleum gas leaks and causes excessive valve flow, the existing liquefied petroleum gas cylinder valves cannot complete remedial control measures such as automatic cut-off, which to a certain extent affects the safety of the operation and use of liquefied petroleum gas cylinders.
[0005] In response to such situations, there are currently a variety of intelligent LPG cylinder valves on the market that enable individual traceability and safety inspection of LPG cylinders by adding electronic tags, and cooperate with authorized filling devices to ensure the safe filling of LPG cylinders, thereby achieving intelligent filling. However, although this type of LPG cylinder valve solves the problems of cross-filling, uninspected cylinders, and refilling and using scrapped cylinders, these improved valves still do not have the function of automatically cutting off the valve flow in time when the LPG leaks and causes excessive valve flow.
[0006] In view of this, how to optimize the component structure of the liquefied petroleum gas smart bottle valve so that it can accurately and efficiently cut off the gas path when the liquefied petroleum gas leaks and causes the valve flow to be too large, thereby avoiding further leakage of liquefied petroleum gas and improving the safety of the use of bottled liquefied petroleum gas is an important technical problem that technical personnel in this field currently need to solve. Utility Model Content
[0007] The utility model aims to provide an over-current cut-off intelligent bottle valve for liquefied petroleum gas, which has an electronic tag and an authorized filling device to realize intelligent filling, and an over-current cut-off device to accurately and efficiently cut off the gas path when the liquefied petroleum gas leaks and causes the valve flow to be too large, thereby avoiding further leakage of liquefied petroleum gas, thereby improving the safety of using bottled liquefied petroleum gas.
[0008] In order to solve the above technical problems, the utility model provides an over-current cut-off liquefied petroleum gas intelligent bottle valve, comprising a valve body, the bottom of the valve body has an air inlet, the side of the valve body has an air outlet, and the inside of the valve body has a valve cavity connected between the air inlet and the air outlet;
[0009] A bracket and a base are embedded in the valve cavity, and both the bracket and the base have a hollow structure, and the bracket and the base are arranged in sequence from top to bottom along the axial direction of the valve cavity and butted against each other end to end, and a valve core is arranged in the valve cavity so as to be movable in the axial direction, and the length direction of the valve core is consistent with the axial direction of the valve cavity, and the valve core passes through the bracket and the base in sequence, and the outer wall of the valve core is respectively gap-matched with the inner wall of the bracket and the inner wall of the base to form a gas guide passage for gas to pass through;
[0010] An upper annular boss is provided on the inner wall of the lower part of the bracket, which protrudes inwardly in the radial direction thereof. The upper annular boss extends along the circumference of the bracket and is connected end to end. A valve core sealing ring is sleeved on the outer periphery of the lower end of the valve core. The valve core sealing ring is located below the upper annular boss and can be aligned, attached and pressed with the bottom of the upper annular boss to block the air guide passage.
[0011] A limited support is arranged in the middle of the bracket, a support spring is arranged on the bracket, the lower end surface of the support spring is against the limited support, a limit sleeve is coaxially provided on the upper outer peripheral surface of the valve core, the bottom of the limit sleeve is against the end surface of the step shaft on the valve core, and the top of the limit sleeve is fixed to the valve core through a limit retaining ring, so that the limit sleeve, the limit retaining ring and the valve core are fixedly connected together;
[0012] The bottom of the limit sleeve also abuts against the upper end surface of the support spring, so that the limit sleeve, the limit retaining ring, the valve core and the valve core sealing ring are all supported by the support spring and placed in a specific position;
[0013] A lower annular boss is provided on the inner wall of the upper part of the base, which protrudes inwardly in the radial direction thereof. The lower annular boss extends along the circumference of the base and is connected end to end. A gas cut-off plug is provided at the bottom of the valve core. The gas cut-off plug is located above the lower annular boss and can be aligned, attached and pressed with the top of the lower annular boss to block the gas guide passage.
[0014] The valve body further comprises a limit cavity in communication with the valve cavity, the limit cavity is located at one side of the valve cavity, a limit drive assembly is arranged in the limit cavity, a limit clamping head which can reciprocate along the radial direction of the valve cavity is protruded from one end of the limit drive assembly toward the valve core, and a limit groove is arranged on the outer peripheral surface of the limit sleeve, and the limit clamping head can be inserted and adapted to the limit groove in a positional manner;
[0015] It also includes a reset member and an activation device adapted to the external authorized filling device, the activation device can be in transmission cooperation with the limit drive assembly, so as to drive the limit clamp head to approach the limit sleeve, so that the limit clamp head is inserted into the limit groove, and the reset member can drive the limit clamp head away from the limit sleeve, so that the limit clamp head is pulled out of the limit groove and separated;
[0016] An electronic tag is arranged on the valve body, and the electronic tag communicates and cooperates with an external authorized filling device and the activation device in pairs.
[0017] Preferably, the upper annular boss and the lower annular boss are coaxially arranged and matched with each other in an axial clearance to form a blocking cavity for the gas shutoff plug to reciprocate in the axial direction, and the inner wall of the blocking cavity is matched with the outer peripheral wall of the gas shutoff plug in a clearance;
[0018] The valve core sealing ring is coaxially sleeved on the top of the air cut-off plug.
[0019] Preferably, the limit drive assembly includes a positioning iron core arranged along the radial direction of the valve core and a drive ring coaxially sleeved on the positioning iron core, the limit clamp is linked to an end of the drive ring close to the valve core, and the activation device is an electromagnetic drive device that cooperates with the magnetic induction of the iron core to drive the drive ring to move axially.
[0020] Preferably, a reset clamp is provided on the inner wall of the limit cavity along its radial protrusion, and a limit seat is provided on the outer periphery of the positioning iron core along its radial protrusion, and the reset member is a reset spring coaxially sleeved on the outer periphery of the driving ring, and the two ends of the reset spring are respectively against the reset clamp and the driving ring.
[0021] Preferably, a plurality of positioning struts are connected between the outer wall of the position-limiting support and the inner wall of the bracket, the positioning struts are evenly arranged along the circumference of the bracket, and the bottom end of the support spring is overlapped on the positioning struts;
[0022] The middle part of the position limiting support is provided with a positioning shaft hole for the valve core to pass through.
[0023] Compared with the above-mentioned background technology, the over-current cut-off liquefied petroleum gas intelligent bottle valve provided by the utility model is a bottle valve that has both an electronic tag and an authorized filling device and an over-current cut-off device. During its operation, under normal gas use conditions, the liquefied petroleum gas in the liquefied petroleum gas bottle enters the valve cavity through the air inlet, and is then discharged to the downstream gas-using equipment through the air outlet. At this time, the entire air flow channel is in a normally open state, and no action is required during normal gas use to ensure smooth conduction of each gas guide path. When the gas output of the liquefied petroleum gas bottle is too large due to leakage in the downstream gas-using equipment or related gas transmission pipelines, the air flow velocity entering the valve cavity through the air inlet increases, and the upward impact and thrust exerted by these air flows on the valve core and other parts also increase accordingly, thereby overcoming the friction between the valve core and its related adapters and the resistance of the weight of each component itself, and pushing the valve core and its related limit sleeve, valve core sealing ring, limit retaining ring and other components upward, and the air flow continues to push the valve core and its related components to move upward until the valve core sealing ring and The bottom of the upper annular boss is fitted and pressed, and the air guide passage is blocked at the press-fit point between the upper annular boss and the valve core sealing ring, thereby preventing the liquefied petroleum gas in the liquefied petroleum gas cylinder from continuing to be discharged through the air outlet, and preventing further increase in the amount of liquefied petroleum gas leakage at downstream related equipment or pipelines, thereby reducing the possibility of accidents such as liquefied petroleum gas explosion, thereby achieving the ability to efficiently and completely cut off the gas path when the external exhaust flow rate of the liquefied petroleum gas cylinder is too large, preventing the liquefied petroleum gas from continuing to be discharged, thereby improving the safety of the use of bottled liquefied petroleum gas.
[0024] A lower annular boss is provided on the inner wall of the upper part of the base, which protrudes inwardly along its radial direction. The lower annular boss extends along the circumference of the base and is connected end to end. A gas cut-off plug is provided at the bottom of the valve core. The gas cut-off plug is located above the lower annular boss and can be aligned, attached and pressed with the top of the lower annular boss to block the gas passage. Under normal working conditions, the gas cut-off plug is matched with the lower annular boss to ensure smooth conduction of the gas passage. When the liquefied petroleum gas cylinder is filled without authorization, the liquefied petroleum gas delivered by the non-matching filling equipment enters the valve cavity through the air outlet, flows through each gas guide passage and then enters the liquefied petroleum gas cylinder through the air inlet. In this process, under the impact of the airflow flowing from the air outlet to the air inlet, the gas shut-off plug and the valve core will move downward until the bottom of the gas shut-off plug and the top of the lower annular boss are reliably fitted and pressed. At this time, the gas guide passage is blocked at the press-fit point between the gas shut-off plug and the lower annular boss, thereby preventing the liquefied petroleum gas from continuing to be filled into the liquefied petroleum gas cylinder through the air inlet, thereby preventing the continuation of unauthorized filling and avoiding cross filling, thereby further improving the safety of the use of bottled liquefied petroleum gas.
[0025] When authorized filling is implemented, the matching filling equipment can communicate with the electronic tag to determine whether the liquefied petroleum gas cylinder currently to be filled meets the standards for authorized filling. After receiving and verifying that the valve information is correct, the matching filling equipment sends an activation instruction to the activation device, and the activation device is actuated, thereby driving the drive ring to move toward the limit sleeve until the insertion and clamping adaptation between the limit clamp head and the limit groove is completed. At this time, when the filling operation is carried out, the limit sleeve and the valve core will not move downward with the air flow, thereby ensuring the smooth conduction of each gas guide path, so that the liquefied petroleum gas can flow through the air outlet, valve cavity and air inlet in sequence and smoothly flow into the liquefied petroleum gas cylinder, and the authorized filling is successfully completed. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0027] Figure 1 A front cross-sectional view of the assembly structure of an over-current cut-off liquefied petroleum gas intelligent bottle valve provided by a specific implementation method of the utility model;
[0028] Figure 2 for Figure 1 Axonometric view of the middle bracket;
[0029] Figure 3 for Figure 2 A top view of
[0030] Figure 4 for Figure 2 Front section view of .
[0031] in:
[0032] 10-valve body; 101-valve cavity; 102-air inlet; 103-air outlet; 104-base; 105-bottom plug; 106-lower annular boss; 107-blocking cavity; 108-limiting cavity; 109-reset card table;
[0033] 11- bracket; 111- upper annular boss; 112- limit support; 113- positioning support rod; 114- positioning shaft hole; 115- bracket sealing ring;
[0034] 12-valve core; 121-valve core sealing ring; 122-support spring; 123-gas cut-off plug; 124-limit retaining ring; 125-step shaft end face;
[0035] 13-limiting sleeve; 131-limiting slot;
[0036] 14-limit drive assembly; 141-limit clamp; 142-positioning iron core; 143-drive ring; 144-limit seat; 145-reset spring;
[0037] 15- Electronic tag;
[0038] 20-hand wheel; 21-blocking device; 22-top outlet of valve chamber. DETAILED DESCRIPTION
[0039] The core of the utility model is to provide an over-current cut-off intelligent bottle valve for liquefied petroleum gas. The over-current cut-off intelligent bottle valve for liquefied petroleum gas has an electronic tag and an authorized filling device to realize intelligent filling, and also has an over-current cut-off device to accurately and efficiently cut off the gas path when the liquefied petroleum gas leaks and causes the valve flow to be too large, thereby avoiding further leakage of liquefied petroleum gas, thereby improving the safety of the use of bottled liquefied petroleum gas.
[0040] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0041] It should be noted in advance that, in the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0042] In addition, in the present invention, unless otherwise clearly stipulated and limited, a first feature “on” or “under” a second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature therebetween.
[0043] In addition, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0044] Please refer to Figures 1 to 4 .
[0045] In a specific embodiment, the over-current cut-off liquefied petroleum gas intelligent bottle valve provided by the utility model comprises a valve body 10, the bottom of the valve body 10 has an air inlet 102 connected to the liquefied petroleum gas bottle, the side of the valve body 10 has an air outlet 103 connected to a gas-using device or an inflatable device, and the inside of the valve body 10 has a valve cavity 101 connected between the air inlet 102 and the air outlet 103;
[0046] The valve cavity 101 is embedded with a bracket 11 and a base 104. Both the bracket 11 and the base 104 have a hollow structure. The bracket 11 and the base 104 are arranged in sequence from top to bottom along the axial direction of the valve cavity 101 and are butted against each other end to end. A valve core 12 is movably arranged in the valve cavity 101 along the axial direction. The length direction of the valve core 12 is consistent with the axial direction of the valve cavity 101. The valve core 12 passes through the bracket 11 and the base 104 in sequence, and the outer wall of the valve core 12 is clearance-matched with the inner wall of the bracket 11 and the inner wall of the base 104, respectively, to form a gas guide passage for gas to pass through.
[0047] An upper annular boss 111 is provided on the inner wall of the lower part of the bracket 11 and protrudes inwardly in the radial direction. The upper annular boss 111 extends along the circumference of the bracket 11 and is connected end to end. A valve core sealing ring 121 is sleeved on the outer periphery of the lower end of the valve core 12. The valve core sealing ring 121 is located below the upper annular boss 111 and can be aligned, attached and pressed with the bottom of the upper annular boss 111, so as to block the air guide passage.
[0048] A limited support 112 is disposed in the middle of the bracket 11 , and a support spring 122 is disposed on the bracket 11 . The lower end surface of the support spring 122 abuts against the limited support 112 disposed in the middle of the bracket 11 .
[0049] A limit sleeve 13 is coaxially sleeved on the upper outer circumferential surface of the valve core 12, the bottom of the limit sleeve 13 abuts against the stepped shaft end surface 125 on the valve core 12, and the top of the limit sleeve 13 is fixed to the valve core 12 by a limit retaining ring 124. In this way, the limit sleeve 13, the limit retaining ring 124 and the valve core 12 are fixedly connected together.
[0050] The bottom of the limiting sleeve 13 also abuts against the upper end surface of the supporting spring 122 , so that the limiting sleeve 13 , the limiting retaining ring 124 , the valve core 12 and the valve core sealing ring 121 are all supported by the supporting spring 122 and placed in a specific position.
[0051] During its operation, under normal gas usage conditions, the liquefied petroleum gas in the liquefied petroleum gas cylinder enters the valve chamber 101 through the air inlet 102, and is then discharged to the downstream gas-using equipment through the air outlet 103. At this time, the entire air flow channel is in a normally open state, and no action is required during normal gas use to ensure smooth conduction of each gas guide path.
[0052] When the gas output of the liquefied petroleum gas cylinder is too large due to leakage in the downstream gas-using equipment or related gas transmission pipelines, the air flow velocity entering the valve cavity 101 through the air inlet 102 increases, and the upward impact and thrust exerted by these air flows on the valve core 12 and other parts also increase accordingly, thereby overcoming the friction between the valve core 12 and its related adapters and the resistance of the weight of each component itself, and pushing the valve core 12 and its related limit sleeve 13, valve core sealing ring 121, limit retaining ring 124 and other components upward, and the air flow continues to push the valve core 12 and its related components upward until the valve core 12 is The sealing ring 121 is attached to and pressed against the bottom of the upper annular boss 111. At this time, the air guide passage is blocked at the pressing point between the upper annular boss 111 and the valve core sealing ring 121, thereby preventing the liquefied petroleum gas in the liquefied petroleum gas cylinder from continuing to be discharged through the gas outlet 103, and preventing the leakage of liquefied petroleum gas at downstream related equipment or pipelines from further increasing, thereby reducing the possibility of accidents such as liquefied petroleum gas explosion, thereby achieving the ability to efficiently and completely cut off the gas path when the external exhaust flow rate of the liquefied petroleum gas cylinder is too large, preventing the liquefied petroleum gas from continuing to be discharged, thereby improving the safety of the use of bottled liquefied petroleum gas.
[0053] It should be understood that in actual applications, a sealing device 21 is also provided in the valve body 10, and a handwheel 20 that can rotate on a fixed axis is usually provided on the top of the valve body 10. The operator can control the forward and reverse rotation of the handwheel 20 to rely on the threaded matching structure of the handwheel 20 and the valve body 10 to realize the up and down movement of the shaft at the bottom of the handwheel 20, thereby driving the sealing device 21 to reciprocate and rise and fall through the shaft of the handwheel 20. Specifically, the hand wheel 20 is used to drive the blocking device 21 to descend until the blocking device 21 blocks the top outlet 22 of the valve cavity 101, thereby blocking the conduction between the valve cavity 101 and the gas outlet 103, thereby realizing manual closure of the liquefied petroleum gas cylinder and preventing the internal gas environment of the liquefied petroleum gas cylinder from being connected to the external atmospheric environment; the hand wheel 20 is used to drive the blocking device 21 to rise, thereby releasing the blocking of the top outlet 22 of the valve cavity by the blocking device 21, thereby reconnecting the valve cavity 101 and the gas outlet 103, so that the liquefied petroleum gas in the liquefied petroleum gas cylinder can be discharged later or the liquefied petroleum gas cylinder can be inflated and filled by an external inflation device. Of course, the above-mentioned blocking device 21 and handwheel 20 are direct applications of conventional components in the prior art in this field. Their specific adaptation assembly structure and operation method may be slightly adjusted according to different specific working conditions. Technical personnel in this field can adjust the application by themselves. The above-mentioned description of the specific operation process of the handwheel 20 and the blocking device 21 is only for supplementing the understanding of the actual operating conditions of this scheme. If not necessary, the rest of this article will not be repeated.
[0054] It should be noted that the blocking device 21 may be as shown in the present application. Figure 1 The block-shaped component shown in the figure may also be a plate-shaped component or a component of other shapes. In principle, any component may be used as long as it can ensure structural adaptation and reliable sealing of the valve cavity 101.
[0055] In addition, it should be pointed out that in actual applications, a bottom plug 105 can be set under the base 104, and the bottom plug 105 is connected to the inner wall of the air inlet 102 of the valve body 10 through a thread to support the base 104 and the bracket 11, etc.; the outer side of the air inlet 102 of the valve body 10 is provided with a thread to connect with the liquefied petroleum gas cylinder.
[0056] Generally, ordinary LPG cylinder valves do not have authorized filling devices, so any filling equipment can be used for filling. In this way, cross-filling cannot be avoided, and expired bottles and uninspected bottles cannot be controlled, which poses a safety risk. The LPG smart cylinder valve in this solution has an electronic tag and an authorized filling device. Only gas stations that own the property rights of the LPG smart cylinder valve can fill it.
[0057] Correspondingly, in this solution, a lower annular boss 106 is provided on the upper inner wall of the base 104 protruding inwardly along its radial direction, and the lower annular boss 106 extends along the circumference of the base 104 and is connected end to end. A gas cut-off plug 123 is provided at the bottom of the valve core 12, and the gas cut-off plug 123 is located above the lower annular boss 106 and can be aligned with and pressed against the top of the lower annular boss 106 to block the air guide passage. In a natural state, the gas cut-off plug 123 is away from the lower annular boss 106 to ensure smooth conduction of the air guide passage.
[0058] When the liquefied petroleum gas cylinder is filled without authorization, the liquefied petroleum gas delivered by the unmatched filling equipment enters the valve chamber 101 through the gas outlet 103. The pressure difference and fluid thrust during filling will push the valve core 12 to overcome the elastic force of the supporting spring 122 and move downward, causing the bottom of the gas shut-off plug 123 to fit and press the top of the lower annular boss 106 reliably. At this time, the air guide passage is blocked at the press-fit point between the gas shut-off plug 123 and the lower annular boss 106, and filling cannot be carried out, thereby eliminating the potential safety hazards of unauthorized filling of liquefied petroleum gas during subsequent use, thereby further improving the safety of the use of bottled liquefied petroleum gas.
[0059] In order to further optimize the pressing and fitting effect between the air shut-off plug 123 and the lower annular boss 106, the lower half of the air shut-off plug 123 can be designed as a hemispherical or conical structure with an outer diameter gradually decreasing from top to bottom along the axial direction, so that the lower outer peripheral surface of the air shut-off plug 123 can be more fully pressed and fitted with the top annular surface of the lower annular boss 106, thereby ensuring that the air guide passage is blocked more thoroughly.
[0060] Generally, the upper end surface of the bracket 11 abuts against the end surface of a stepped hole in the inner cavity of the valve body 10, the lower end surface of the bracket 11 abuts against the upper end surface of the base 104, the lower end surface of the base 104 abuts against the upper end surface of the bottom plug 105, and the bottom plug 105 is connected to the valve body 10 through a thread. In this way, the positions of the bracket 11, the base 104, and the bottom plug 105 are fixed.
[0061] Furthermore, the upper annular boss 111 and the lower annular boss 106 are coaxially arranged and matched along the axial clearance to form a blocking cavity 107 for the shut-off plug 123 to reciprocate along the axial direction, and the inner wall of the blocking cavity 107 is matched with the outer peripheral wall of the shut-off plug 123; the valve core sealing ring 121 is coaxially sleeved on the top of the shut-off plug 123. The blocking cavity 107 can provide sufficient axial movement space for the shut-off plug 123, and reliably limit the axial movement position of the shut-off plug 123 within a reasonable range to prevent the shut-off plug 123 from escaping from the valve cavity 101. The clearance fit structure helps to form a space sufficient for air flow between the inner wall of the blocking cavity 107 and the outer peripheral wall of the gas shut-off plug 123, so that when the gas shut-off plug 123 is not aligned and pressed with the upper annular boss 111 or the lower annular boss 106, the smooth conduction of the gas guide passage can be ensured, thereby achieving smooth discharge of liquefied petroleum gas in the liquefied petroleum gas cylinder or smooth filling of external liquefied petroleum gas into the liquefied petroleum gas cylinder.
[0062] In specific applications, an assembly groove extending along the circumference and connected end to end can be set on the top of the air shut-off plug 123 so that the valve core sealing ring 121 can be accurately inserted into the assembly groove, thereby achieving reliable assembly of the valve core sealing ring 121 and the air shut-off plug 123.
[0063] Generally, the outer periphery of the bracket 11 is coaxially provided with a bracket sealing ring 115, and the bracket sealing ring 115 is reliably pressed and fitted with the outer periphery of the bracket 11 and the inner wall of the valve cavity 101 respectively, so as to ensure that the gas flowing between the gas outlet 103 and the gas inlet 102 can only be conducted through the various air guide passages formed between the valve core 12 and the various adapter components, and avoid the gas passing through the valve cavity 101 through the external space of the bracket 11 and other components, so as to ensure the control effect of the valve core 12 and its supporting components on the over-current cut-off liquefied petroleum gas intelligent bottle valve, and ensure the working performance and operating efficiency of the over-current cut-off liquefied petroleum gas intelligent bottle valve.
[0064] On the other hand, the interior of the valve body 10 also has a limit cavity 108 connected to the valve cavity 101. The limit cavity 108 is located on one side of the valve cavity 101. A limit drive component 14 is arranged in the limit cavity 108. A limit clamp 141 which can move radially reciprocatingly along the valve cavity 101 is protruded from one end of the limit drive component 14 toward the valve core 12; a limit groove 131 is provided on the outer peripheral surface of the limit sleeve 13, and the limit clamp 141 can be inserted and adapted to the limit groove 131. When authorized filling is required, the external supporting filling equipment is reliably aligned and adapted with the gas outlet 103 and other parts of the over-current cut-off liquefied petroleum gas intelligent bottle valve, and can gradually approach the limit sleeve 13 by controlling the movement of the limit clamp 141 through the driving force, until the limit clamp 141 is aligned and inserted into the limit groove 131 and snapped into place, and then the filling equipment fills the valve cavity 101 with liquefied petroleum gas through the gas outlet 103. At this time, due to the insertion and snap-fit adaptation structure of the limit clamp 141 and the limit groove 131, the limit sleeve 13 is always in a stable axial working position. Therefore, even if impacted by airflow from above, the limit sleeve 13 and the valve core 12 will not move downward with the airflow, thereby ensuring the smooth conduction of each gas guide passage, so that the liquefied petroleum gas can flow through the gas outlet 103, the valve cavity 101 and the air inlet 102 in turn and then smoothly flow into the inner cavity of the bottle body until the liquefied petroleum gas filling of the liquefied petroleum gas cylinder is completed.
[0065] In actual applications, in order to further optimize the alignment and insertion efficiency and adaptation effect between the limit groove 131 and the limit clamp 141, the limit groove 131 can be arranged as an annular groove surrounding the circumference of the limit sleeve 13, so that the limit clamp 141 can be smoothly inserted into the limit groove 131 or withdrawn from the limit groove 131, avoiding blockage or misalignment due to possible assembly errors during the insertion and adaptation process between the limit clamp 141 and the limit groove 131, and ensuring that the limit clamp 141 can be accurately and smoothly inserted into the limit groove 131 or withdrawn from the limit groove 131 each time it moves.
[0066] Specifically, the over-current cut-off liquefied petroleum gas intelligent bottle valve also includes a reset member and an activation device adapted to an external authorized filling device, and the reset member is generally a reset spring 145. The activation device can cooperate with the limit drive assembly 14 to drive the limit clamp 141 to approach the limit sleeve 13, so that the limit clamp 141 is inserted into the limit groove 131; the reset spring 145 can drive the limit drive assembly 14 away from the limit sleeve 13, so that the limit clamp 141 is drawn out and separated from the limit groove 131. After the above-mentioned authorized filling operation is completed, the drive ring 143 is reset under the action of the elastic force of the reset spring 145, and the limit clamp 141 is pulled out of the limit groove 131 and disengaged, thereby releasing the clamping limit of the limit sleeve 13, so that the valve core 12 can regain the ability to move moderately back and forth along the axial direction, so that the corresponding action of the valve core 12 can still be used in the subsequent use of the equipment to achieve normal exhaust gas use and timely cut off the gas path when the gas flow is too large, thereby ensuring the reliable and safe operation of the over-current cut-off liquefied petroleum gas intelligent bottle valve.
[0067] Generally, the activation device is preferably arranged on the matching filling equipment during authorized filling, so that when the filling equipment is aligned with the corresponding position of the overcurrent cut-off liquefied petroleum gas intelligent bottle valve, the activation device can be triggered after being adapted in place, thereby realizing a series of linkage operations such as the subsequent insertion and matching of the limit clamp 141 with the limit groove 131 and the authorized filling of the liquefied petroleum gas cylinder, greatly optimizing the authorized filling operation efficiency of the liquefied petroleum gas cylinder and reducing the difficulty of operation. Of course, if necessary, the activation device can also be arranged on the valve body 10 or related matching parts to ensure the adaptation effect and action efficiency of the activation device and the limit drive assembly 14. In principle, as long as it can meet the actual operation and application needs of the overcurrent cut-off liquefied petroleum gas intelligent bottle valve, it can be used.
[0068] On this basis, the limit drive assembly 14 includes a positioning iron core 142 arranged along the radial direction of the valve core 12 and a drive ring 143 coaxially sleeved on the positioning iron core 142, and the limit clamp 141 is linked to the end of the drive ring 143 close to the valve core 12, and the activation device is an electromagnetic drive device that cooperates with the magnetic induction of the drive assembly 14. This electromagnetic drive device is used as an activation device, and uses the electromagnetic principle to form a driving force that drives the drive ring 143 to approach the limit sleeve 13, thereby cooperating with the drive ring 143 to form an electromagnetic induction linkage mechanism, and can minimize the structural influence of the supporting action mechanism of the limit drive assembly 14 on the main functional components of the over-current cut-off liquefied petroleum gas intelligent bottle valve, ensuring that the structure of the main mechanism components such as the valve body 10 is regular and reliable. In actual operation, the electromagnetic drive device can be an electromagnet or other device with electromagnetic induction effect, and the positioning iron core 142 and the drive ring 143 should be made of materials that can meet electromagnetic induction to ensure the linkage effect.
[0069] In order to ensure the airtightness of the limit cavity 108, a sealing gasket or a sealing ring can be arranged at the matching position between the limit drive assembly 14 and the inner wall of the limit cavity 108, so as to prevent the internal space of the limit cavity 108 from being directly connected to the external environment of the valve body 10, thereby preventing the liquefied petroleum gas from leaking through the limit cavity 108. Generally, the sealing gasket or the sealing ring can be directly arranged at the matching position between the positioning iron core 142 and the inner wall of the limit cavity 108, and the staff can flexibly select and adjust according to the specific working conditions and in combination with the actual assembly space layout.
[0070] More specifically, a reset clamping platform 109 is provided on the inner wall of the limit cavity 108 protruding along its radial direction, a limit seat 144 is provided on the outer periphery of the positioning core 142 protruding along its radial direction, and the reset member is a reset spring 145 coaxially sleeved on the outer periphery of the drive ring 143, and one end of the reset spring 145 abuts against the reset clamping platform 109, and the other end abuts against the drive ring 143. On this basis, the positioning core 142 is threadedly connected to the valve body 10, so that the positioning core 142 is reliably fixed on the valve body 10, so the drive ring 143 is used as an action component adapted to the reset spring 145. The reset spring 145 has a simple and reliable structure, high transmission efficiency, good working condition tolerance, and can fully guarantee the reset efficiency and action accuracy of the limit drive assembly 14.
[0071] In addition, an electronic tag 15 is provided on the valve body 10, and the electronic tag 15 communicates and cooperates with the external authorized filling device and the activation device. When authorized filling is implemented, the matching filling device can communicate and cooperate with the electronic tag 15 to determine that the liquefied petroleum gas cylinder currently to be filled meets the authorized filling standards. After the matching filling device receives and verifies that the valve information is correct, it sends an activation instruction to the activation device, and the activation device is activated, thereby driving the drive ring 143 to move toward the limit sleeve 13 until the insertion and card connection adaptation action between the limit clamp 141 and the limit groove 131 is completed. Generally, the above-mentioned electronic tag can be an RFID radio frequency tag. It can also be other wireless radio frequency identification tags.
[0072] It should be particularly noted that when a controllable large-flow exhaust operation needs to be implemented, the activation device can be used to control the limit clamp 141 to be close to the limit sleeve 13, so that the limit clamp 141 is aligned with the limit groove 131 and is inserted and engaged, thereby reliably locking the axial position of the limit sleeve 13 and the valve core 12 to prevent the valve core 12 from moving upward under the impact of the airflow entering the valve cavity 101 at the air inlet 102, causing the valve core sealing ring 121 and the like to block or block the air guide path, thereby ensuring the smooth conduction of each air guide path, so that the gas in the liquefied petroleum gas cylinder can be efficiently and smoothly discharged to the outside of the liquefied petroleum gas cylinder, meeting the corresponding large-flow exhaust operation requirements and making the entire large-flow exhaust operation process safe and controllable.
[0073] In addition, a plurality of positioning struts 113 are connected between the outer wall of the limit support 112 and the inner wall of the bracket 11. The positioning struts 113 are evenly arranged along the circumference of the bracket 11, and the bottom end of the support spring 122 is overlapped on the positioning strut 113; the middle part of the limit support 112 has a positioning shaft hole 114 for the valve core 12 to pass through.
[0074] The positioning shaft hole 114 can be reliably coaxially fitted with the valve core 12, thereby further optimizing the coaxial fitting effect of the limit support 112 and the valve core 12, and optimizing the coaxiality of the bracket 11 and the valve core 12 accordingly, thereby improving the structural adaptability and assembly strength between the bracket 11 and its related accessories and the valve core 12, thereby making the operation of the over-current cut-off liquefied petroleum gas intelligent bottle valve more stable and efficient.
[0075] In summary, the over-current cut-off liquefied petroleum gas intelligent bottle valve provided in the utility model is a bottle valve that has both an electronic tag and an authorized filling device and an over-current cut-off device. During its operation, under normal gas use conditions, the liquefied petroleum gas in the liquefied petroleum gas bottle enters the valve cavity through the air inlet, and is then discharged to the downstream gas-using equipment through the air outlet. At this time, the entire air flow channel is in a normally open state, and no action is required during normal gas use, so that each gas guide path can be smoothly conducted. When the gas output of the liquefied petroleum gas bottle is too large due to leakage in the downstream gas-using equipment or related gas transmission pipelines, the air flow velocity entering the valve cavity through the air inlet increases, and the upward impact and thrust exerted by these air flows on the valve core and other parts also increase accordingly, thereby overcoming the friction between the valve core and its related adapters and the resistance of the weight of each component itself, and lifting the valve core and its related limit sleeves, valve core sealing rings, limit retaining rings and other components upward, and the air flow continues to push the valve core and its related components to move upward until the valve core sealing ring and The bottom of the upper annular boss is fitted and pressed, and the air guide passage is blocked at the press-fit point between the upper annular boss and the valve core sealing ring, thereby preventing the liquefied petroleum gas in the liquefied petroleum gas cylinder from continuing to be discharged through the air outlet, and preventing further increase in the amount of liquefied petroleum gas leakage at downstream related equipment or pipelines, thereby reducing the possibility of accidents such as liquefied petroleum gas explosion, thereby achieving the ability to efficiently and completely cut off the gas path when the external exhaust flow rate of the liquefied petroleum gas cylinder is too large, preventing the liquefied petroleum gas from continuing to be discharged, thereby improving the safety of the use of bottled liquefied petroleum gas.
[0076] A lower annular boss is provided on the inner wall of the upper part of the base, which protrudes inwardly along its radial direction. The lower annular boss extends along the circumference of the base and is connected end to end. A gas cut-off plug is provided at the bottom of the valve core. The gas cut-off plug is located above the lower annular boss and can be aligned, attached and pressed with the top of the lower annular boss to block the gas passage. Under normal working conditions, the gas cut-off plug is matched with the lower annular boss to ensure smooth conduction of the gas passage. When the liquefied petroleum gas cylinder is filled without authorization, the liquefied petroleum gas delivered by the non-matching filling equipment enters the valve cavity through the air outlet, flows through each gas guide passage and then enters the liquefied petroleum gas cylinder through the air inlet. In this process, under the impact of the airflow flowing from the air outlet to the air inlet, the gas shut-off plug and the valve core will move downward until the bottom of the gas shut-off plug and the top of the lower annular boss are reliably fitted and pressed. At this time, the gas guide passage is blocked at the press-fit point between the gas shut-off plug and the lower annular boss, thereby preventing the liquefied petroleum gas from continuing to be filled into the liquefied petroleum gas cylinder through the air inlet, thereby preventing the continuation of unauthorized filling and avoiding cross filling, thereby further improving the safety of the use of bottled liquefied petroleum gas.
[0077] When authorized filling is implemented, the matching filling equipment can communicate with the electronic tag to determine whether the liquefied petroleum gas cylinder currently to be filled meets the standards for authorized filling. After receiving and verifying that the valve information is correct, the matching filling equipment sends an activation instruction to the activation device, and the activation device is actuated, thereby driving the drive ring to move toward the limit sleeve until the insertion and clamping adaptation between the limit clamp head and the limit groove is completed. At this time, when the filling operation is carried out, the limit sleeve and the valve core will not move downward with the air flow, thereby ensuring the smooth conduction of each gas guide path, so that the liquefied petroleum gas can flow through the air outlet, valve cavity and air inlet in sequence and smoothly flow into the liquefied petroleum gas cylinder, and the authorized filling is successfully completed.
[0078] The above is a detailed introduction to the over-current cut-off liquefied petroleum gas smart bottle valve provided by the utility model and the liquefied petroleum gas cylinder using the over-current cut-off liquefied petroleum gas smart bottle valve. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. An over-current cut-off liquefied petroleum gas intelligent bottle valve, characterized in that: The valve body comprises a valve body, wherein the bottom of the valve body has an air inlet, the side of the valve body has an air outlet, and the interior of the valve body has a valve cavity connected between the air inlet and the air outlet; A bracket and a base are embedded in the valve cavity, and both the bracket and the base have a hollow structure, and the bracket and the base are arranged in sequence from top to bottom along the axial direction of the valve cavity and butted against each other end to end, and a valve core is arranged in the valve cavity so as to be movable in the axial direction, and the length direction of the valve core is consistent with the axial direction of the valve cavity, and the valve core passes through the bracket and the base in sequence, and the outer wall of the valve core is respectively gap-matched with the inner wall of the bracket and the inner wall of the base to form a gas guide passage for gas to pass through; An upper annular boss is provided on the inner wall of the lower part of the bracket, which protrudes inwardly in the radial direction thereof. The upper annular boss extends along the circumference of the bracket and is connected end to end. A valve core sealing ring is sleeved on the outer periphery of the lower end of the valve core. The valve core sealing ring is located below the upper annular boss and can be aligned, attached and pressed with the bottom of the upper annular boss to block the air guide passage. A limited support is arranged in the middle of the bracket, a support spring is arranged on the bracket, the lower end surface of the support spring is against the limited support, a limit sleeve is coaxially provided on the upper outer peripheral surface of the valve core, the bottom of the limit sleeve is against the end surface of the step shaft on the valve core, and the top of the limit sleeve is fixed to the valve core through a limit retaining ring, so that the limit sleeve, the limit retaining ring and the valve core are fixedly connected together; The bottom of the limit sleeve also abuts against the upper end surface of the support spring, so that the limit sleeve, the limit retaining ring, the valve core and the valve core sealing ring are all supported by the support spring and placed in a specific position; A lower annular boss is provided on the inner wall of the upper part of the base, which protrudes inwardly in the radial direction thereof. The lower annular boss extends along the circumference of the base and is connected end to end. A gas cut-off plug is provided at the bottom of the valve core. The gas cut-off plug is located above the lower annular boss and can be aligned, attached and pressed with the top of the lower annular boss to block the gas guide passage. The valve body also has a limit cavity in communication with the valve cavity, the limit cavity is located at one side of the valve cavity, a limit drive assembly is arranged in the limit cavity, a limit clamping head which can reciprocate along the radial direction of the valve cavity is protruded from one end of the limit drive assembly toward the valve core, and a limit groove is arranged on the outer peripheral surface of the limit sleeve, and the limit clamping head can be inserted and adapted to the limit groove in a positional manner; It also includes a reset member and an activation device adapted to the external authorized filling device, the activation device can be in transmission cooperation with the limit drive assembly, so as to drive the limit clamp head to approach the limit sleeve, so that the limit clamp head is inserted into the limit groove, and the reset member can drive the limit clamp head away from the limit sleeve, so that the limit clamp head is pulled out of the limit groove and separated; An electronic tag is arranged on the valve body, and the electronic tag communicates and cooperates with an external authorized filling device and the activation device in pairs.
2. The over-current cut-off liquefied petroleum gas intelligent bottle valve according to claim 1, characterized in that: The upper annular boss is coaxially arranged with the lower annular boss and is matched with an axial clearance to form a blocking cavity for the gas shutoff plug to reciprocate along the axial direction, and the inner wall of the blocking cavity is matched with the outer peripheral wall of the gas shutoff plug; The valve core sealing ring is coaxially sleeved on the top of the air cut-off plug.
3. The over-current cut-off liquefied petroleum gas intelligent bottle valve according to claim 1, characterized in that: The limit drive assembly includes a positioning iron core arranged along the radial direction of the valve core and a drive ring coaxially sleeved on the positioning iron core. The limit clamp is linked to an end of the drive ring close to the valve core. The activation device is an electromagnetic drive device that cooperates with the magnetic induction of the iron core to drive the drive ring to move axially.
4. The over-current cut-off liquefied petroleum gas intelligent bottle valve according to claim 3, characterized in that: A reset clamp is provided on the inner wall of the limit cavity along its radial protrusion, and a limit seat is provided on the outer periphery of the positioning iron core along its radial protrusion. The reset member is a reset spring coaxially sleeved on the outer periphery of the driving ring, and the two ends of the reset spring are respectively against the reset clamp and the driving ring.
5. The over-current cut-off liquefied petroleum gas intelligent bottle valve according to claim 1, characterized in that: A plurality of positioning struts are connected between the outer wall of the position-limiting support and the inner wall of the bracket, and the positioning struts are evenly arranged along the circumference of the bracket, and the bottom end of the support spring is overlapped on the positioning struts; The middle part of the position limiting support is provided with a positioning shaft hole for the valve core to pass through.