Safety interlock of pressure vessel

Abstract

The utility model relates to a pressure vessel safety interlock which comprises a vessel body and a door cover, a flange is arranged at the top of the vessel body, a sealing piece is arranged between the flange and the door cover, a plurality of fixing blocks are installed on the upper surface of the flange, and pressing blocks are installed on the outer surfaces of the fixing blocks through lifting mechanisms. A plurality of lock tongues are installed on the outer surface of the door cover, and check blocks are arranged at the ends of the lock tongues. A pin hole is formed in the outer surface of one spring bolt, a plug pin is arranged in one fixing block and the pressing block, the tail end of the plug pin is matched with the pin hole, an electromagnet is installed on the lower surface of the flange, and the telescopic end of the electromagnet is connected with the plug pin. The electromagnet drives the plug pin to be inserted into the pin hole, the purpose of locking the door cover can be achieved, the lifting mechanism drives all the pressing blocks to descend so that the pressing blocks can be tightly pressed on the spring bolt, then enough acting force can be applied to a sealing piece, the sealing effect of the sealing piece can be guaranteed, the leakage situation can be greatly reduced, and safety is higher.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel technology, specifically to a pressure vessel safety interlock. Background Technology

[0002] A pressure vessel is a sealed device capable of withstanding internal or external pressure, typically used for storing or handling media such as gases and liquids. Its design, manufacture, and use must adhere to stringent safety standards to ensure safe operation under extreme conditions such as high pressure, high temperature, or low temperature. Common pressure vessels include boilers, gas storage tanks, and reaction vessels, widely used in petrochemical, energy, and pharmaceutical industries. However, existing pressure vessels often have poor sealing performance, and leaks may occur when subjected to prolonged high pressure. Utility Model Content

[0003] The purpose of this invention is to provide a pressure vessel safety interlock to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows.

[0005] A pressure vessel safety interlock includes a vessel body and a door cover. A flange is located on the top of the vessel body, and a sealing element is installed between the flange and the door cover. Multiple fixing blocks are mounted on the upper surface of the flange, and pressure blocks are mounted on the outer surfaces of the fixing blocks via a lifting mechanism. Multiple locking tongues are mounted on the outer surface of the door cover, with stops at the ends of the locking tongues. One locking tongue has a pin hole on its outer surface. A pin is provided inside one of the fixing blocks and the pressure block, with the end of the pin fitting into the pin hole. An electromagnet is mounted on the lower surface of the flange, and the telescopic end of the electromagnet is connected to the pin.

[0006] Furthermore, the lifting mechanism includes two mounting slots on the outer surface of the fixed block, with a screw rotatably mounted inside the mounting slot, a slider mounted on the outer surface of the screw, and the slider connected to the pressure block. The outer surface of the container body is provided with a drive mechanism capable of simultaneously driving all screws to rotate.

[0007] Furthermore, the drive mechanism includes a gear ring rotatably mounted on the outer surface of the container body, an electric push rod hinged to the lower surface of the flange, the end of the telescopic end of the electric push rod being hinged to the gear ring, and the end of the screw extending through to the lower part of the flange and mounting a gear thereon, the gear meshing with the gear ring.

[0008] Furthermore, a magnet is provided on the outer surface of the latch with the pin hole, and a latch sensing switch is provided inside the pressure block with the pin.

[0009] Furthermore, a pin-type induction switch is provided at the bottom of the electromagnet, and a pressure relief solenoid valve interface and a pressure switch interface are respectively provided on the outer surface of the container body.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0011] 1. This utility model uses an electromagnet to drive the pin to insert into the pin hole, which can achieve the purpose of locking the door cover. Furthermore, the lifting mechanism drives all the pressure blocks to descend, pressing them against the lock tongue, thereby applying sufficient force to the sealing element, ensuring its sealing effect, greatly reducing leakage, and enhancing safety.

[0012] 2. This utility model uses a pressure relief solenoid valve interface and a pressure switch interface. The pressure relief solenoid valve is used to release the internal pressure of the container body, and the pressure switch is used to display and monitor the internal pressure of the container body. If the pressure exceeds the set value, a control signal is automatically sent to ensure that the pressure is controlled within a safe range. Attached Figure Description

[0013] Figure 1 is one of the three-dimensional structural schematic diagrams of this utility model;

[0014] Figure 2 is a second three-dimensional structural schematic diagram of this utility model;

[0015] Figure 3 is an enlarged schematic diagram of A in Figure 1;

[0016] Figure 4 is a structural schematic diagram of the middle door cover of this utility model;

[0017] Figure 5 is a structural schematic diagram of the lifting mechanism in this utility model;

[0018] Figure 6 is a schematic diagram of the pin structure in this utility model;

[0019] Figure 7 is one of the electrical control schematic diagrams of this utility model embodiment (door cover open state);

[0020] Figure 8 is the second electrical control schematic diagram of an embodiment of this utility model (door closed state).

[0021] In the diagram: 100, container body; 101, door cover; 102, fixing block; 103, pressure block; 104, latch; 105, stop block; 106, pin hole; 107, electromagnet; 108, pin; 109, flange; 200, lifting mechanism; 201, mounting groove; 202, screw; 203, slider; 300, drive mechanism; 301, gear ring; 302, electric push rod; 303, gear; 400, magnet; 401, latch induction switch; 500, pin induction switch; 600, pressure relief solenoid valve interface; 601, pressure switch interface. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. 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. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positions of the connected parts remain unchanged. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0024] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0025] As shown in Figures 1-6, a pressure vessel safety interlock includes a vessel body 100 and a cover 101. A flange 109 is provided on the top of the vessel body 100, and a sealing element is provided between the flange 109 and the cover 101. Multiple fixing blocks 102 are mounted on the upper surface of the flange 109, and pressure blocks 103 are mounted on the outer surface of the fixing blocks 102 via a lifting mechanism 200. Multiple locking tongues 104 are mounted on the outer surface of the cover 101, and a stop block 105 is provided at the end of each locking tongue 104. A pin hole 106 is opened on the outer surface of one of the locking tongues 104. A pin 108 is provided inside one of the fixing blocks 102 and the pressure block 103, and the end of the pin 108 is adapted to the pin hole 106.

[0026] An electromagnet 107 is mounted on the lower surface of the flange 109, and the telescopic end of the electromagnet 107 is connected to the pin 108.

[0027] In use, first place the door cover 101 on the flange 109 and rotate it so that the latch 104 can be inserted under the pressure block 103 and the stop block 105 abuts against the side of the pressure block 103. At this time, the pin 108 corresponds to the pin hole 106. The electromagnet 107 can drive the pin 108 to descend and insert its end into the pin hole 106, thereby locking the door cover 101. Then, the lifting mechanism 200 drives all the pressure blocks 103 to descend and press them against the latch 104, thereby applying sufficient force to the seal to ensure its sealing effect, greatly reducing leakage and enhancing safety.

[0028] Preferably, the lifting mechanism 200 includes two mounting slots 201 formed on the outer surface of the fixed block 102. A screw 202 is rotatably mounted inside the mounting slot 201. A slider 203 is mounted on the outer surface of the screw 202 and is connected to the pressure block 103. The outer surface of the container body 100 is provided with a drive mechanism 300 that can drive all screws 202 to rotate simultaneously.

[0029] When all screws 202 are driven to rotate by the drive mechanism 300, the screws 202 drive the slider 203 to move along its surface, thus enabling the pressure block 103 to rise and fall vertically. When the pressure block 103 descends and presses against the latch 104, sufficient pressure can be applied to the seal to ensure the sealing effect. When the pressure block 103 rises and separates from the latch 104, the door cover 101 can be opened.

[0030] Preferably, the drive mechanism 300 includes a gear ring 301 rotatably mounted on the outer surface of the container body 100, an electric push rod 302 hingedly mounted on the lower surface of the flange 109, the end of the telescopic end of the electric push rod 302 being hingedly connected to the gear ring 301, and the end of the screw 202 extending through to the lower part of the flange 109 and mounting a gear 303 thereon, and the gear 303 meshing with the gear ring 301.

[0031] When the electric push rod 302 is activated, its telescopic end extends outward and pushes the gear ring 301 to rotate at a certain angle. Since the gear 303 and the gear ring 301 mesh with each other, the purpose of driving all the screws 202 to rotate is achieved.

[0032] Preferably, a magnet 400 is provided on the outer surface of the latch 104 with the pin hole 106, and a latch sensing switch 401 is provided inside the pressure block 103 with the pin 108.

[0033] When the latch 104 is fully inserted under the pressure block 103, the latch sensing switch 401 senses that the magnet 400 is in the correct position. At this time, the pin hole 106 corresponds to the pin 108. Then, the latch sensing switch 401 sends a signal to the electromagnet 107 to control its activation, causing it to drive the pin 108 down and insert it into the pin hole 106, thereby achieving the purpose of automatic locking.

[0034] Preferably, the bottom of the electromagnet 107 is provided with a pin-type induction switch 500, and the outer surface of the container body 100 is provided with a pressure relief solenoid valve interface 600 and a pressure switch interface 601, respectively.

[0035] The pressure relief solenoid valve is used to release the internal pressure of the container body 100. The pressure switch is used to display and monitor the internal pressure of the container body 100. If the pressure exceeds the set value, a control signal is automatically sent to ensure that the pressure is controlled within a safe range. The pin-type induction switch 500 is electrically connected to the external PLC controller. When the pin-type induction switch 500 is not conducting, the PLC controller cannot perform the pressure boosting operation.

[0036] Please refer to Figure 7, which is the electrical control schematic diagram when the door cover 101 is open and the controller is not working. In the figure, K1 is the latch sensor switch 401, K2 is the manual switch, K3 is the pin sensor switch 500, and K4 is the pressure switch.

[0037] When the door cover 101 is in the open position, K1 is in the off state and the indicator light is not lit;

[0038] At the same time, the electromagnetic coil loses power, electromagnet 107 does not work, pin 108 moves away from k3, K3 is not conductive, and the PLC controller is not powered on and cannot boost voltage.

[0039] Please refer to Figure 8, which is the electrical control schematic diagram when the door cover 101 is closed and the controller is in working state. In the figure, K1 is the latch sensor switch 401, K2 is the manual switch, K3 is the pin sensor switch 500, and K4 is the pressure switch.

[0040] When the door cover 101 is in the closed position, K1 is in the conducting state and the indicator light is on. At this time, pressing K2 will energize the electromagnetic coil, and the electromagnet 107 will drive the pin 108 to pull down and extend to the K3 position, triggering K3 to conduct.

[0041] After K3 is turned on, the indicator light on the plug illuminates. At the same time, K3 connects to the power supply Vcc to power the PLC controller, allowing the controller to operate with increased voltage. This ensures that the voltage can be increased only when the quick-opening door reaches the predetermined closing position.

[0042] Since K4 is normally open, the contact closes when there is pressure during the pressurization process. Even if K2 is manually disconnected, the electromagnet 107 can still be energized through the contact K4-1 of K4, thus preventing the door from opening when there is pressure inside the container and preventing accidental operation.

[0043] After the pressurization is complete, the PLC controller automatically opens the pressure relief solenoid valve to release the pressure inside the container. K4 automatically disconnects its contacts when it detects that there is no pressure inside the container. At this time, manual power-off can be performed by operating K2. Under the action of the reset spring, the pin 108 moves upward and exits, thus unlocking the container. Only when the pressure inside the pressure vessel is completely released can the door cover 101 be opened, further ensuring safety.

[0044] The above is a detailed description of the present invention in conjunction with specific embodiments, and it should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, any equivalent substitutions or obvious modifications made without departing from the concept of the present invention, and which have the same performance or use, should be considered as falling within the patent protection scope defined by the submitted claims.

Claims

1. A pressure vessel safety interlock, comprising a vessel body (100) and a door cover (101), characterized in that: a flange (109) is arranged on the top of the vessel body (100), a seal is arranged between the flange (109) and the door cover (101), a plurality of fixing blocks (102) are mounted on the upper surface of the flange (109), and a pressing block (103) is mounted on the outer surface of the fixing block (102) through a lifting mechanism (200); a plurality of lock latches (104) are mounted on the outer surface of the door cover (101), and a stop block (105) is arranged at the end of the lock latch (104); a pin hole (106) is formed on the outer surface of one of the lock latches (104), a latch (108) is arranged in one of the fixing blocks (102) and the pressing block (103), the end of the latch (108) is matched with the pin hole (106), and an electromagnet (107) is mounted on the lower surface of the flange (109), and the telescopic end of the electromagnet (107) is connected with the latch (108).

2. The pressure vessel safety interlock according to claim 1, characterized in that: the lifting mechanism (200) comprises two mounting grooves (201) formed on the outer surface of the fixing block (102), a screw rod (202) is rotatably mounted in the mounting groove (201), a sliding block (203) is mounted on the outer surface of the screw rod (202), the sliding block (203) is connected with the pressing block (103), and a driving mechanism (300) capable of simultaneously driving the rotation of all the screw rods (202) is arranged on the outer surface of the vessel body (100).

3. The pressure vessel safety interlock according to claim 2, characterized in that: the driving mechanism (300) comprises a tooth ring (301) rotatably mounted on the outer surface of the vessel body (100), an electric push rod (302) is hingedly mounted on the lower surface of the flange (109), the end of the telescopic end of the electric push rod (302) is hingedly connected with the tooth ring (301), the end of the screw rod (202) penetrates to the lower side of the flange (109) and is provided with a gear (303), and the gear (303) is meshingly connected with the tooth ring (301).

4. The pressure vessel safety interlock according to claim 1, characterized in that: a magnet (400) is arranged on the outer surface of the lock latch (104) in which the pin hole (106) is formed, and a lock latch induction switch (401) is arranged in the interior of the pressing block (103) in which the latch (108) is arranged.

5. The pressure vessel safety interlock according to claim 1, characterized in that: a latch induction switch (500) is arranged at the bottom of the electromagnet (107), and a pressure relief solenoid valve interface (600) and a pressure switch interface (601) are respectively arranged on the outer surface of the vessel body (100).

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