Safety interlocking device of quick-opening type pressure vessel

Abstract

The invention relates to the technical field of pressure vessel safety interlocking, in particular to a quick door opening type pressure vessel safety interlocking device which comprises an annular skirt edge, a buckle, a spring bolt body and an electromagnetic interlocking mechanism, and the annular skirt edge is coaxially and fixedly arranged on the outer wall of a pressure tank body in a sleeving mode and is close to the top end of the pressure tank body; the multiple buckles are evenly distributed on the annular skirt edge in an annular array mode, the multiple spring bolt bodies are evenly distributed and fixed to the side wall of the periphery of the cover body in an annular array mode, and the distance and the number of the spring bolt bodies are consistent with those of the buckles. Through an automatic control system and a mechanical locking mechanism, the container is prevented from being opened by misoperation under the condition that the pressure is not completely released, even if a person tries to manually operate, the system can prevent the container from being opened through the self-holding state, it is ensured that only when all safety conditions are met, the operation can be conducted, and the safety is ensured. Three indicating lamps are used for providing real-time state feedback, so that an operator is helped to know the current working state, and blind operation is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure vessel safety interlocking, and particularly to a safety interlocking device for a quick-opening pressure vessel. Background Art

[0002] Quick-opening pressure vessels are widely used in industries such as chemical engineering, food, and medical due to their advantages of convenient opening and high production efficiency. Due to their special structural design, if operated improperly during use, it may cause the sudden release of high-pressure gas or liquid inside the container, resulting in serious safety accidents. Therefore, ensuring the safe operation of quick-opening pressure vessels is of crucial importance.

[0003] The existing safety interlocking devices for quick-opening pressure vessels mainly achieve interlocking through mechanical means. The traditional mechanical interlocking function is relatively single and its reliability is not high. During actual use, situations often occur where the door cover is not fully closed or the internal pressure is not fully released before attempting to open the door cover, thus easily leading to safety accidents. Summary of the Invention

[0004] The purpose of the present invention is to provide a safety interlocking device for a quick-opening pressure vessel to solve the technical problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions.

[0006] A safety interlocking device for a quick-opening pressure vessel includes an annular skirt, a buckle, a locking tongue body, and an electromagnetic interlocking mechanism. The annular skirt is coaxially and fixedly sleeved on the outer wall of the pressure vessel near the top of the pressure vessel. A plurality of buckles are evenly distributed in an annular array on the annular skirt. A plurality of locking tongue bodies are evenly distributed and fixed on the outer peripheral side wall of the cover body, and the spacing and quantity are the same as those of the buckles. The cross-section of each annular skirt is an inverted L shape. A card slot for the corresponding locking tongue body to be correspondingly inserted is respectively formed between each buckle and the upper surface of the annular skirt. An electromagnetic interlocking mechanism is provided at a position on the annular skirt corresponding to one of the buckles. When the electromagnetic interlocking mechanism is energized, it is used to clamp and lock the corresponding locking tongue body in the card slot.

[0007] Preferably, the electromagnetic interlocking mechanism includes an electromagnet and a pin. The electromagnet is fixed at the bottom of the annular skirt and extends through to the upper side of the corresponding buckle. The pin is in an inverted J shape and is fixed on the top of the electromagnet. Among them, a perforation for the pin to pass through up and down is provided at a position on the corresponding buckle corresponding to the pin, and a card hole for the pin to be inserted and matched is provided on the corresponding locking tongue body.

[0008] Preferably, the electromagnet consists of an electromagnetic coil base, an iron core rod, and a return spring. The electromagnetic coil base is fixed to the bottom of the annular skirt. The annular skirt and the corresponding buckle are provided with mounting holes that extend vertically and communicate with the holes on the electromagnetic coil base. The iron core rod is movably inserted into the hole of the electromagnetic coil base in a lifting manner and extends through the mounting hole to the upper side of the buckle. A connection head is fixed to the top of the iron core rod. The return spring is sleeved outside the iron core rod. The top end of the return spring is fixed to the lower surface of the connection head, and the top end is fixed to the upper surface of the buckle. The pin is fixedly connected to the connection head.

[0009] Preferably, the safety interlock device further includes a connecting arm, an outer ring body, an annular seat, and a driving mechanism. Connecting arms that extend around the cover body are fixed to one side of each locking tongue body on the outer peripheral side wall of the cover body. An outer ring body is fixedly connected to the ends of each connecting arm. The annular seat is rotationally sleeved on the outer wall of the pressure tank body in a limited manner. The driving mechanism is arranged on the side of the pressure tank body and is used to drive the annular seat to rotate and adjust. A number of positioning rods that all extend vertically upward are evenly distributed and fixed on the annular seat. Positioning holes for the positioning rods to be inserted and matched are evenly distributed on the outer ring body. When the positioning rods are respectively inserted into the positioning holes in a matching manner, the cover body and the pressure tank body are coaxial, and the sealing end faces are matched and aligned. When each connecting arm is in contact and fit with the side of each buckle one by one, the locking tongue body is firmly installed in the card slot, and the position of the pin is aligned with the card hole.

[0010] Preferably, a locking tongue induction switch is installed on the buckle with a perforation thereon, and an induction magnetic sheet that can be inductively matched with the locking tongue induction switch is embedded on the locking tongue body with a card hole thereon. When the locking tongue body is firmly installed in the card slot, the locking tongue induction switch and the induction magnetic sheet are aligned in position, and at this time, the locking tongue induction switch switches to the on state.

[0011] Preferably, a pin induction switch that is inductively matched with the bottom end of the iron core rod is installed below the electromagnetic coil base through a mounting bracket. The pin induction switch is electrically connected to a controller for controlling the pressure increase in the pressure tank body. When the pin is inserted into the card hole and locked, the bottom end of the iron core rod protrudes from the bottom end of the electromagnetic coil base. At this time, the pin induction switch senses the protrusion of the iron core rod and switches to the on state.

[0012] Preferably, a pressure relief solenoid valve is embedded in the pressure relief hole on the side wall of the pressure tank body for releasing the internal pressure of the pressure tank body. A pressure switch is installed on the side wall of the pressure tank body and is connected to an interface on the side wall of the pressure tank body. The pressure switch is used to display and monitor the internal pressure of the pressure tank body and automatically sends a control signal when the pressure exceeds the set value.

[0013] Preferably, the safety interlock device further includes a support arm and a panel. The panel is installed on the side of the pressure tank body through the support arm. A manual switch and an indicator light group are provided on the panel. The manual switch is used to manually control the power on and off of the electromagnetic coil base. The manual switch and the pressure switch are connected in parallel to the on-off control circuit of the electromagnetic coil base. The indicator light group consists of three indicator lights.

[0014] Preferably, the driving mechanism includes a shaft rod, a gear, a toothed ring and a driving operating device. The shaft rod is rotatably installed on the outer side wall of the pressure tank body. The gear is fixedly sleeved on the shaft rod. The toothed ring is fixed below the annular seat and correspondingly meshes with the gear. The driving operating device is arranged on the side of the pressure tank body and is used to drive the shaft rod to rotate and adjust.

[0015] Preferably, the driving operating device includes a bracket, a worm, a worm wheel and a rocking disc. The worm is rotatably installed on the side of the pressure tank body through a pair of brackets. The worm wheel is fixedly sleeved on the shaft rod and correspondingly meshes with the worm. The rocking disc is installed at one end of the worm.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0017] In the present invention, the locking tongue body is inserted into the card slot to realize the clamping of the cover body. There are multiple buckles and locking tongue bodies, which realize multi-point clamping, and the clamping points are evenly distributed, ensuring the firmness when the cover body is closed and sealed, avoiding pressure leakage, and the cover body is rotatably opened and closed. Only one electromagnetic interlocking mechanism is needed to realize the overall locking of the cover body. The structure is simple and the layout is reasonable. Through the energization of the electromagnetic coil seat, the iron core rod is pulled down, and under the connection action of the connector, the pin is driven to move down synchronously, so that the pin passes through the through hole and is inserted into the card hole to realize the locking effect, and then the cover body cannot rotate. When the internal pressure of the pressure tank body is not completely released, the cover body is locked to avoid the cover body being randomly opened and causing safety accidents, effectively improving the safety and reliability of the pressure vessel.

[0018] The connecting arm in the present invention serves both as a connecting member between the cover body and the outer ring body and as a positioning member for aligning the card hole and the pin, killing two birds with one stone. At the same time, by using the clamping of the positioning rod and the outer ring body, the cover body is driven to rotate and adjust synchronously. The positioning rod serves both as a positioning member and as a traction member, killing two birds with one stone, reducing the number of parts, lowering the manufacturing difficulty and cost, and being easy to operate.

[0019] Since when the cover body is closed on the top of the pressure tank body, the sealing end faces of the pressure tank body and the cover body are in contact, there is a large friction. It is time-consuming and laborious to open and close the cover body by manual rotation, increasing the labor intensity. In the present invention, by setting a driving mechanism, only by rocking the rocking disc can the cover body be driven to rotate and open and close for adjustment, which is easy and labor-saving and has higher efficiency. In addition, by using the one-way transmission of the worm and the worm wheel, a self-locking effect is achieved on the cover body after it is in place. When not adjusted, it is ensured that the cover body will not randomly shift after it is in place, which is beneficial to maintaining the alignment state of the card hole and the pin.

[0020] Through an automated control system and a mechanical locking mechanism, the present invention prevents the accidental opening of the container when the pressure has not been fully released. Even if someone attempts to operate manually, the system can prevent the container from being opened through a self-holding state, ensuring that the operation can only be carried out when all safety conditions are met. By using three indicator lights, real-time status feedback is provided to help the operator understand the current working state and avoid blind operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is one of the three-dimensional schematic diagrams of the overall structure of the present invention;

[0022] Figure 2 It is the second three-dimensional schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is the schematic diagram of the surface structure of the pressure tank body in the present invention;

[0024] Figure 4 It is Figure 3 the enlarged schematic diagram of the structure at position A in

[0025] Figure 5 It is Figure 3 the partial sectional schematic diagram of the structure shown;

[0026] Figure 6 It is the schematic diagram of the surface structure of the cover body in the present invention;

[0027] Figure 7 It is Figure 1 the first partial sectional schematic diagram of the structure shown;

[0028] Figure 8 It is Figure 1 the second partial sectional schematic diagram of the structure shown;

[0029] Figure 9 It is the detailed schematic diagram of the driving mechanism in the present invention;

[0030] Figure 10 It is the partial schematic diagram of the surface structure of the panel in the present invention;

[0031] Figure 11 It is the electrical control schematic diagram when the cover is open and the controller is not working;

[0032] Figure 12 It is the electrical control schematic diagram when the cover is closed and the controller is working.

[0033] In the figure: 01, pressure tank body; 02, cover body; 03, pressure relief hole; 04, pressure relief solenoid valve; 05, interface; 06, pressure switch; 1, annular skirt; 11, buckle; 12, card slot; 13, lock tongue induction switch; 14, mounting bracket; 15, bolt induction switch; 2, lock tongue body; 21, card hole; 22, induction magnetic sheet; 3, electromagnetic interlock mechanism; 301, mounting hole; 31, electromagnet; 311, electromagnetic coil seat; 312, iron core rod; 313, connector; 314, return spring; 32, pin; 321, perforation; 4, connecting arm; 5, outer ring body; 51, positioning hole; 6, annular seat; 61, positioning rod; 7, drive mechanism; 71, shaft rod; 72, gear; 73, toothed ring; 74, drive operating device; 741, bracket; 742, worm; 743, worm gear; 744, turntable; 8, support arm; 9, panel; 91, manual switch; 92, indicator light group; 921, first indicator light; 922, second indicator light; 923, third indicator light. Detailed implementation mode

[0034] The embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

[0035] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixing" means that they are connected to each other and the relative positional relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only references to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0036] In the embodiments of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0037] In the embodiments of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the front and rear associated objects.

[0038] Reference to "one embodiment" or "some embodiments" or the like described in this specification means that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present invention. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc., which appear in different places in this specification, do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized.

[0039] Please refer to Figures 1 - 12 , the present invention provides a safety interlock device for a quick-opening pressure vessel, including an annular skirt 1, a buckle 11, a locking tongue body 2, and an electromagnetic interlock mechanism 3. The annular skirt 1 is coaxially and fixedly sleeved on the outer wall of the pressure tank body 01 and near the top of the pressure tank body 01. A plurality of buckles 11 are evenly distributed in an annular array on the annular skirt 1. A plurality of locking tongue bodies 2 are evenly distributed and fixed on the outer peripheral side wall of the cover body 02 in an annular array, and the spacing and quantity are the same as those of the buckles 11. The cross-section of each annular skirt 1 is an inverted L shape. A clamping groove 12 for the corresponding locking tongue body 2 to be correspondingly inserted is formed between each buckle 11 and the upper surface of the annular skirt 1. An electromagnetic interlock mechanism 3 is provided at a position corresponding to one of the buckles 11 on the annular skirt 1. When the electromagnetic interlock mechanism 3 is energized, it is used to clamp and lock the corresponding locking tongue body 2 in the clamping groove 12.

[0040] Among them, the electromagnetic interlock mechanism 3 includes an electromagnet 31 and a latch 32. The electromagnet 31 is fixed at the bottom of the annular skirt 1 and extends through to the upper side of the corresponding buckle 11. The latch 32 is in an inverted J shape, and the latch 32 is fixed on the top end of the electromagnet 31. Among them, a through hole 321 for the latch 32 to pass through up and down is provided at a position corresponding to the latch 32 on the corresponding buckle 11, and a clamping hole 21 for the latch 32 to be inserted into is provided on the corresponding locking tongue body 2.

[0041] Specifically, the electromagnet 31 is composed of an electromagnetic coil seat 311, an iron core rod 312, and a return spring 314. The electromagnetic coil seat 311 is fixed at the bottom of the annular skirt 1. Installation holes 301 that extend vertically and communicate with the holes on the electromagnetic coil seat 311 are provided on the annular skirt 1 and the corresponding buckle 11. The iron core rod 312 is movably inserted in the hole of the electromagnetic coil seat 311 in a lifting manner and extends through the installation hole 301 to the upper side of the buckle 11. A connection head 313 is fixed at the top of the iron core rod 312. The return spring 314 is sleeved outside the iron core rod 312. The top end of the return spring 314 is fixed to the lower surface of the connection head 313, and the top end is fixed to the upper surface of the buckle 11. The latch 32 is fixedly connected to the connection head 313.

[0042] When the pressure vessel is in use, the cover body 02 is covered on the annular skirt 1, and it is ensured that the locking tongue bodies 2 and the card slots 12 are in one-to-one correspondence. Subsequently, the cover body 02 is rotated to drive each locking tongue body 2 to be correspondingly clamped into the card slot 12 one by one. When the position of the pin 32 and the card hole 21 is aligned, the cover body 02 is considered to be installed in place. Subsequently, the electromagnetic coil seat 311 is powered on to work, pulling the iron core rod 312 downward. Under the connection action of the connector 313, the pin 32 is driven to move downward synchronously, so that the pin 32 passes through the through hole 321 and is inserted into the card hole 21 to achieve locking, thereby making the cover body 02 unable to rotate. At this time, the return spring 314 is compressed and stores energy. When the internal pressure of the pressure tank body 01 is not completely released, the cover body 02 is locked to prevent the cover body 02 from being opened randomly and causing safety accidents, effectively improving the safety and reliability of the pressure vessel. When the cover body 02 is opened, the electromagnetic coil seat 311 is powered off, and the magnetic attraction pulling force on the iron core rod 312 disappears. Under the elastic force of the return spring 314, the iron core rod 312 and the pin 32 are pushed upward, and the pin 32 is disengaged from the card hole 21 to achieve unlocking.

[0043] In addition, there are at least six snap fasteners 11 and locking tongue bodies 2. When the cover body 02 is covered and locked, each locking tongue body 2 is correspondingly clamped into the card slot 12 one by one to achieve multi-point clamping, and the clamping points are evenly distributed to ensure the firmness when the cover body 02 is covered and sealed, avoiding pressure leakage. Moreover, the cover body 02 is rotatably opened and closed, and only one electromagnetic interlock mechanism 3 is needed to lock the entire cover body 02, with a simple structure and reasonable layout.

[0044] Since there are multiple snap fasteners 11 and locking tongue bodies 2, it is relatively difficult for the locking tongue bodies 2 to be aligned with the card slots 12 one by one when the cover body 02 is covered, and it is also relatively difficult for the pin 32 to be aligned with the card hole 21. To solve the above problems, the present application provides a positioning effect when the cover body 02 is covered to ensure that the locking tongue bodies 2 and the card slots 12, as well as the pin 32 and the card hole 21, can be quickly paired. The specific design is as follows:

[0045] Such as Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9As shown in the figure, the safety interlock device further includes a connecting arm 4, an outer ring body 5, an annular seat 6, and a driving mechanism 7. Connecting arms 4 extending around the cover body 02 are fixed on the outer peripheral side wall of the cover body 02 on one side of each locking tongue body 2. An outer ring body 5 is fixedly connected to the ends of the connecting arms 4. The annular seat 6 is rotationally sleeved on the outer wall of the pressure tank body 01 with a limit. The driving mechanism 7 is arranged on the side of the pressure tank body 01 and is used to drive the annular seat 6 to rotate and adjust. A plurality of positioning rods 61 extending vertically upward are uniformly fixed on the annular seat 6, and positioning holes 51 for the positioning rods 61 to be inserted in a matching manner are uniformly arranged on the outer ring body 5.

[0046] When the cover body 02 is covered on the upper end of the pressure tank body 01, ensure that each positioning rod 61 is inserted into the corresponding positioning hole 51 one by one. The cross-sections of one positioning rod 61 and one positioning hole 51 are in a matching rectangular shape, and the cross-sections of the remaining positioning rods 61 and positioning holes 51 are circular. The shape difference provides more accurate position positioning. When the positioning rods 61 are respectively inserted into the corresponding positioning holes 51, the cover body 02 and the pressure tank body 01 are coaxial, and the sealing end faces match and fit, ensuring that the positions of the locking tongue bodies 2 correspond to the positions of the card slots 12 one by one.

[0047] Subsequently, by operating the driving mechanism 7, the annular seat 6 can be driven to rotate. Under the clamping action of the positioning rods 61 and the outer ring body 5, the cover body 02 can be driven to rotate and adjust until each connecting arm 4 abuts against the side of the buckle 11 one by one. When each connecting arm 4 abuts against the side of each buckle 11 in a corresponding manner, the locking tongue body 2 is properly installed in the card slot 12, and the position of the pin 32 is aligned with the position of the card hole 21, effectively realizing the position positioning of the locking tongue body 2 and the card slot 12 and the position alignment of the pin 32 and the card hole 21, ensuring the accurate position when each component is assembled.

[0048] Among them, the connecting arm 4 is used to connect the outer ring body 5 and the cover body 02. At the same time, by using the blocking cooperation between the connecting arm 4 and the buckle 11, the alignment of the card hole 21 and the pin 32 is realized. The connecting arm 4 serves both as a connecting part between the cover body 02 and the outer ring body 5 and as a positioning part for the alignment of the card hole 21 and the pin 32, achieving two purposes with one action.

[0049] The positioning rods 61 are inserted into the positioning holes 51 one by one to realize the position correspondence between the locking tongue body 2 and the card slot 12. At the same time, when the annular seat 6 rotates, by using the clamping between the positioning rods 61 and the outer ring body 5, the cover body 02 is driven to rotate and adjust synchronously. The positioning rods 61 serve both as positioning parts and as traction parts, achieving two purposes with one action.

[0050] Such as Figure 9As shown, the driving mechanism 7 includes a shaft rod 71, a gear 72, a toothed ring 73 and a driving operation device 74. The shaft rod 71 is rotatably installed on the outer side wall of the pressure tank body 01. The gear 72 is fixedly sleeved on the shaft rod 71. The toothed ring 73 is fixed below the annular seat 6 and meshes with the gear 72 correspondingly. The driving operation device 74 is arranged on the side of the pressure tank body 01 and is used to drive the shaft rod 71 to rotate and adjust. Specifically, it includes a bracket 741, a worm 742, a worm gear 743 and a rocking disc 744. The worm 742 is rotatably installed on the side of the pressure tank body 01 through a pair of brackets 741. The worm gear 743 is fixedly sleeved on the shaft rod 71 and meshes with the worm 742 correspondingly. The rocking disc 744 is installed at one end of the worm 742.

[0051] By shaking the rocking disc 744 to drive the worm 742 to rotate, the rotating worm 742 meshes with and drives the worm gear 743 and drives the shaft rod 71 and the gear 72 to rotate. The rotating locking tongue body 2 meshes with and drives the toothed ring 73 and drives the annular seat 6 to rotate. After the cover body 02 is positioned and paired, the rotating annular seat 6 can drive the cover body 02 to perform synchronous adjustment so that the locking tongue body 2 can be engaged with the card slots 12 one by one to achieve clamping. Since when the cover body 02 is closed on the top of the pressure tank body 01, the sealing end faces of the pressure tank body 01 and the cover body 02 are in contact, there is a large friction. It is time-consuming and laborious to open and close the cover body 02 by manual rotation, increasing the labor intensity. By setting the driving mechanism 7, only by shaking the rocking disc 744 can the cover body 02 be driven to rotate and open and close for adjustment, which is easy and labor-saving and has higher efficiency.

[0052] In addition, by utilizing the one-way transmission of the worm 742 and the worm gear 743, a self-locking effect is achieved on the cover body 02 after it is in place. When not adjusted, it is ensured that the cover body 02 will not shift randomly after it is in place, which is beneficial to maintaining the alignment state of the card holes 21 and the card pins 32 continuously. The structure is reasonable and the operation is convenient.

[0053] Such as Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 and Figure 10As shown in the figure, a tongue sensing switch 13 is installed on the buckle 11 with a perforation 321 thereon, and an induction magnetic sheet 22 that can be inductively matched with the tongue sensing switch 13 is embedded on the tongue body 2 with a latching hole 21 thereon. When the tongue body 2 is properly latched in the card slot 12, the tongue sensing switch 13 and the induction magnetic sheet 22 are aligned. At this time, the tongue sensing switch 13 switches to the conducting state. An insertion pin sensing switch 15 that is inductively matched with the bottom end of the iron core rod 312 is installed below the electromagnetic coil seat 311 through a mounting bracket 14. The insertion pin sensing switch 15 is electrically connected to a PLC controller for controlling the pressure boost in the pressure tank 01. The PLC controller adopts the existing technology and is not shown in the figure. The controller can control the pressure boost work in the pressure tank 01. When the latch pin 32 is inserted into the latching hole 21 and locked, the bottom end of the iron core rod 312 protrudes from the bottom end of the electromagnetic coil seat 311. At this time, the insertion pin sensing switch 15 senses the protrusion of the iron core rod 312 and switches to the conducting state.

[0054] A pressure relief solenoid valve 04 is embedded in the pressure relief hole 03 on the side wall of the pressure tank 01 for releasing the internal pressure of the pressure tank 01. A pressure switch 06 connected to an interface 05 located on the side wall of the pressure tank 01 is installed on the side wall of the pressure tank 01. The pressure switch 06 is used to display and monitor the internal pressure of the pressure tank 01 and automatically send a control signal when the pressure exceeds the set value.

[0055] This safety interlock device further includes a support arm 8 and a panel 9. The panel 9 is installed on the side of the pressure tank 01 through the support arm 8. A manual switch 91 and an indicator light group 92 are provided on the panel 9. The manual switch 91 is used to manually control the power on and off of the electromagnetic coil seat 311. The manual switch 91 and the pressure switch 06 are connected in parallel to the on-off control circuit of the electromagnetic coil seat 311. The indicator light group 92 consists of three indicator lights, namely a first indicator light 921, a second indicator light 922, and a third indicator light 923.

[0056] Please refer to Figure 11 and Figure 12 , where K1 in the figure is the tongue sensing switch 13, K2 is the manual switch 91, K3 is the insertion pin sensing switch 15, and K4 is the pressure switch 06.

[0057] When the cover body 02 is in the open state, the tongue sensing switch 13 and the induction magnetic sheet 22 are separated, that is, K1 is in the off state, the first indicator light 921 is not lit, and at the same time, the electromagnetic coil seat 311 loses power and does not work. The iron core rod 312 is away from the insertion pin sensing switch 15, that is, K3 is not conducting, and at the same time, the second indicator light 922 is not lit. The PLC controller is not powered on and cannot control the pressure boost work. There is no pressure in the pressure tank 01. Therefore, the third indicator light 923 is also not lit.

[0058] When the cover 02 is in the closed state, the lock tongue induction switch 13 senses the induction magnetic sheet 22, that is, K1 is in the conducting state, and the first indicator light 921 is lit. At this time, when the manual switch 91 is pressed, the electromagnetic coil seat 311 is powered on, and the iron core rod 312 drives the latch 32 to move downward. The iron core rod 312 extends to the induction position of the plug pin induction switch 15, that is, triggers K3 to conduct. After K3 conducts, the second indicator light 922 is lit. At the same time, K3 connects to the power supply Vcc to supply power to the PLC controller, and the controller can normally control the boosting operation. Thus, when the cover 02 is closed in place, the boosting operation can be carried out. When there is pressure in the pressure tank 01, the third indicator light 923 is lit.

[0059] Since the pressure switch 06 is of the normally open type, the contacts close when there is pressure during the boosting operation. At this time, even if the manual switch 91 is manually operated to disconnect, the electromagnetic coil seat 311 is still powered on through the contacts K4-1 of the pressure switch 06 in the self-holding state, thereby ensuring that the cover 02 cannot be opened when there is pressure in the container, which plays a role in preventing misoperation.

[0060] After the boosting is completed, the PLC controller automatically opens the pressure relief solenoid valve 04 to release the pressure in the container to the outside. When K4 detects that there is no pressure in the container, the contacts automatically disconnect. At this time, manual power-off can be carried out by operating the manual switch 91. Under the action of the return spring 314, the latch 32 is driven to move upward and withdraw, realizing unlocking. Thus, the cover 02 can be opened only when the pressure inside the pressure vessel is completely released, which further ensures safety.

[0061] Through the automated control system and mechanical locking mechanism, it is prevented from misoperating to open the container when the pressure is not completely released. Even if someone tries to operate manually, the system can prevent the container from being opened through the self-holding state. The system ensures that the operation can be carried out only when all safety conditions are met through the chain reaction between multiple sensors and the controller, and uses three indicator lights to provide real-time status feedback to help the operator understand the current working state and avoid blind operation.

[0062] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

Claims

1. A quick-opening door pressure vessel safety interlock device, characterized in that: It comprises an annular skirt (1), a buckle (11), a lock tongue body (2) and an electromagnetic interlocking mechanism (3); The annular skirt (1) is coaxially fixedly sleeved on the outer wall of the pressure tank body (01) and close to the top of the pressure tank body (01), and a plurality of buckles (11) are evenly distributed on the annular skirt (1) in an annular array; A plurality of the lock tongue bodies (2) are evenly distributed and fixed on the outer peripheral side wall of the cover body (02) in a circular array, and the spacing and number are consistent with the buckle (11); The cross-section of each of the annular skirts (1) is an inverted L-shape, and a slot (12) for the locking tongue body (2) to be correspondingly engaged is formed between each of the buckles (11) and the upper surface of the annular skirt (1); An electromagnetic interlocking mechanism (3) is provided on the annular skirt (1) at a position corresponding to one of the buckles (11); when the electromagnetic interlocking mechanism (3) is energized, it is used to clamp and lock the lock tongue body (2) at the corresponding position in the clamping groove (12).

2. A safety interlock device for a quick-opening pressure vessel according to claim 1, characterized in that: The electromagnetic interlocking mechanism (3) comprises an electromagnet (31) and a latch (32); The electromagnet (31) is fixed to the bottom of the annular skirt (1) and extends through to the top of the corresponding buckle (11); The bayonet (32) is in an inverted J shape, and the bayonet (32) is fixed on the top end of the electromagnet (31); Wherein, a through hole (321) for the bayonet (32) to pass up and down is provided on the corresponding buckle (11) at a position corresponding to the bayonet (32); The corresponding lock tongue body (2) is provided with a locking hole (21) for the locking pin (32) to be matched and inserted.

3. A safety interlock device for a quick-opening pressure vessel according to claim 2, characterized in that: The electromagnet (31) is composed of an electromagnetic coil seat (311), an iron core rod (312) and a return spring (314); The electromagnetic coil seat (311) is fixed on the bottom of the annular skirt (1); The annular skirt (1) and the corresponding buckle (11) are provided with a mounting hole (301) extending vertically and communicating with a hole on the electromagnetic coil seat (311); The iron core rod (312) is inserted into the hole of the electromagnetic coil seat (311) in a lifting and movable manner, and passes through the mounting hole (301) and extends to the top of the buckle (11); A connector (313) is fixed on the top of the core rod (312), the return spring (314) is sleeved on the outside of the core rod (312), the top of the return spring (314) is fixed to the lower surface of the connector (313), and the top is fixed to the upper surface of the buckle (11); The bayonet (32) is fixedly connected to the connecting head (313).

4. A quick-opening door pressure vessel safety interlock device according to claim 3, characterized in that: It also includes a connecting arm (4), an outer ring body (5), an annular seat (6) and a driving mechanism (7); The connecting arms (4) extending around the cover body (02) are fixed on one side of each of the lock tongue bodies (2) on the outer peripheral side wall of the cover body (02), and the outer ring body (5) is fixed to the end of each of the connecting arms (4); The annular seat (6) is limitedly rotatably sleeved on the outer wall of the pressure tank body (01), and the driving mechanism (7) is arranged on the side of the pressure tank body (01) and is used to drive the annular seat (6) to rotate and adjust; A plurality of positioning rods (61) extending vertically upward are evenly fixed on the annular seat (6); The outer ring body (5) is evenly provided with positioning holes (51) for the positioning rods (61) to be inserted and matched for positioning; When the positioning rods (61) are respectively positioned and inserted into the positioning holes (51), the cover body (02) and the pressure tank body (01) are coaxial, and the sealing end faces match and coincide with each other; When the connecting arms (4) and the side portions of the buckles (11) are in contact with each other in a one-to-one correspondence, the locking tongue body (2) is snapped into place in the snap slot (12), and the snap pin (32) is aligned with the snap hole (21).

5. A quick-opening door pressure vessel safety interlock device according to claim 4, characterized in that: A lock tongue sensing switch (13) is installed on the buckle (11) having the through hole (321); The lock tongue body (2) having the locking hole (21) is embedded with an induction magnetic sheet (22) that can be inductively matched with the lock tongue induction switch (13); When the lock tongue body (2) is locked in place in the locking slot (12), the lock tongue sensing switch (13) is aligned with the induction magnetic sheet (22), and at this time, the lock tongue sensing switch (13) is switched to a conducting state.

6. A quick-opening door pressure vessel safety interlock device according to claim 3, characterized in that: A latch induction switch (15) is installed below the electromagnetic coil seat (311) via a mounting frame (14) and is inductively matched with the bottom end of the iron core rod (312); The latch induction switch (15) is electrically connected to a controller for controlling the pressure increase in the pressure tank (01); When the latch pin (32) is inserted into the latch hole (21) and locked, the bottom end of the iron core rod (312) is exposed from the bottom end of the electromagnetic coil seat (311). At this time, the latch pin sensing switch (15) senses that the iron core rod (312) is extended and switches to a conducting state.

7. A safety interlock device for a quick-opening pressure vessel according to claim 5, characterized in that: A pressure relief solenoid valve (04) is embedded in the pressure relief hole (03) on the side wall of the pressure tank body (01) to release the internal pressure of the pressure tank body (01); A pressure switch (06) connected to an interface (05) located on the side wall of the pressure tank (01) is installed on the side wall of the pressure tank (01). The pressure switch (06) is used to display and monitor the internal pressure of the pressure tank (01) and automatically sends a control signal when the pressure exceeds a set value.

8. A safety interlock device for a quick-opening pressure vessel according to claim 7, characterized in that: It also includes a support arm (8) and a panel (9), wherein the panel (9) is mounted on the side of the pressure tank body (01) through the support arm (8); The panel (9) is provided with a manual switch (91) and an indicator light group (92); The manual switch (91) is used to manually control the on / off power supply of the electromagnetic coil seat (311), and the manual switch (91) and the pressure switch (06) are connected in parallel to the on / off control circuit of the electromagnetic coil seat (311); The indicator light group (92) consists of three indicator lights.

9. A quick-opening door pressure vessel safety interlock device according to claim 4, characterized in that: The driving mechanism (7) comprises a shaft (71), a gear (72), a gear ring (73) and a driving operating device (74); The shaft (71) is rotatably mounted on the outer side wall of the pressure tank body (01), and the gear (72) is fixedly sleeved on the shaft (71); The gear ring (73) is fixed below the annular seat (6) and meshes with the gear (72) accordingly; The driving operating device (74) is arranged on the side of the pressure tank body (01) and is used to drive the shaft (71) to rotate and adjust.

10. A safety interlock device for a quick-opening pressure vessel according to claim 9, characterized in that: The driving operation device (74) comprises a bracket (741), a worm (742), a worm wheel (743) and a rocking plate (744); The worm (742) is rotatably mounted on the side of the pressure tank (01) through a pair of brackets (741); the worm wheel (743) is fixedly sleeved on the shaft (71) and meshes with the worm (742) accordingly; The rocker (744) is mounted on one end of the worm (742).

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