Internal locking connector of safety interlocking testing device for pressure vessel with quick-opening door

Abstract

The utility model discloses an internal locking connector of a safety interlocking testing device for a pressure vessel with a quick-opening door. The internal locking connector comprises a first pipeline system, a second pipeline system and an internal locking connector body. When a first functional test is carried out, the first pipeline system is connected with an upper pipe opening of a third electromagnetic valve of the quick-opening valve pressure container, and the second pipeline system is connected with a lower pipe opening of the third electromagnetic valve through an inner lock connector; in the second functional test, the first pipeline system is connected with a pressure gauge of the quick-opening pressure container through an internal locking connector; the inner lock connector comprises a sealing top column, a sealing sleeve and a first electromagnet, the first end of the sealing sleeve is of a columnar structure, the second end of the sealing sleeve is provided with a containing cavity, the first electromagnet is installed in the containing cavity, and the sealing top column penetrates through the second end of the sealing sleeve and the first electromagnet from the outside and is connected with the inner wall of the sealing sleeve in a sealed mode. The beneficial effects of the utility model are that the sealing performance is ensured, and the safety interlocking test result is ensured to be accurate.

Description

Technical Field

[0001] The utility model relates to the field of experimental equipment, in particular to a joint of a safety interlocking test device for a quick-opening pressure vessel. Background Art

[0002] A quick-opening pressure vessel is a pressure vessel with a nested quick-seal locking device between the end cover or head of the inlet and outlet passage and the main body. The safety interlock device is one of the important safety accessories of the quick-opening pressure vessel.

[0003] According to the special design requirements for quick-opening door pressure vessels in the "Regulations for the Supervision of Stationary Pressure Vessels" (TSG 21-2016), safety interlock devices should be installed on such vessels. The safety interlock device should meet the following requirements: 1. When the quick-opening door reaches the predetermined position, it can be operated at a higher pressure; 2. When the internal pressure of the pressure vessel is completely released, the quick-opening door can be opened. In order to ensure the safe operation of the quick-opening door pressure vessel, the safety interlock device must be functionally tested in the event of an abnormal situation, and the following two points must be met: First, if the quick-opening door is not closed in place, air intake and pressure increase are not allowed; second, if there is still pressure inside the pressure vessel, the door or cover of the quick-opening door pressure vessel cannot be opened.

[0004] like Figure 1 As shown, the principle of the safety interlock device of the quick-opening door pressure vessel is briefly described as follows: 1. Before the quick-opening door pressure vessel is operated, it is necessary to confirm whether the door or cover of the quick-opening door pressure vessel has reached the predetermined closing position. Only when the door or cover is closed to the predetermined position, the quick-opening door safety interlock device can transmit the signal of the door or cover being closed to the predetermined position to the third solenoid valve through the equipment safety interlock device signal transmission <1>. At this time, the third solenoid valve is allowed to be opened, and the gas enters the quick-opening door pressure vessel, and the quick-opening door pressure vessel starts to increase pressure. In this way, the function of the safety interlock device of the quick-opening door pressure vessel meets the first requirement specified in the regulations-when the quick-opening door reaches the predetermined position, it can increase pressure; otherwise, the third solenoid valve cannot be opened, and the gas cannot enter the quick-opening door pressure vessel. 2. After the operation of the shutter-type pressure vessel is completed, before opening the door or cover of the quick-opening pressure vessel, it is necessary to confirm whether the internal pressure of the container is completely released. Only when the internal pressure of the container is completely released, the pressure gauge used to measure the internal pressure of the container transmits the signal that the internal pressure of the container is completely released to the door or cover of the quick-opening pressure vessel through the signal transmission of the equipment safety interlock device <2>, and the door or cover of the quick-opening pressure vessel is automatically unlocked and allowed to be opened. In this way, the function of the safety interlock device of the quick-opening pressure vessel meets the second requirement stipulated in the regulations-the quick-opening door can be opened only when the internal pressure of the pressure vessel is completely released; otherwise, the door or cover of the quick-opening pressure vessel cannot be opened. Figure 1 The equipment and parts contained in it are the body of the quick-opening pressure vessel to be tested and its accessories.

[0005] At present, the functional test of the safety interlock device is mainly carried out by the gas source of the equipment itself. 3 The above), if a large amount of steam is required to achieve the pressurized working condition, even if the pressure in the kettle is very small, the destructive energy it contains is enough to cause casualties and property losses. Also, because the tester does not know whether the safety interlock device is normal or effective before testing the safety interlock device, in case the safety interlock device has failed, when the test container is under pressure, the door or cover of the quick-opening pressure vessel is opened, it is very likely that the container will cause casualties and property losses. Not only that, in this pressurized working condition, to test whether the safety interlock device meets the requirement that the quick-opening door can be opened only after the internal pressure is completely released, the door opening operation must be performed. Therefore, the traditional testing method has low safety. It can be seen that this method is neither economical nor safe. The problems with this method include cumbersome operation, no energy saving, poor safety, and a small scope of application.

[0006] Furthermore, during the functional test of the safety interlock device, the sealing performance of each part should be high. If the inner locking joint leaks or has poor sealing, it will easily cause inaccurate test results and affect the final normal use.

[0007] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to ordinary technicians in this field. Utility Model Content

[0008] The technical problem to be solved by the utility model is: how to solve the problem that the inner locking joint in the test device for the functional test of the safety interlock device cannot meet the sealing requirements, which may lead to inaccurate test results and affect the final use.

[0009] The utility model solves the above technical problems through the following technical means:

[0010] The inner locking joint of the safety interlock test device of the quick-opening door pressure vessel comprises a first pipeline system, a second pipeline system, and an inner locking joint; during the functional test one, the first pipeline system is connected to the upper pipe opening of the third solenoid valve of the quick-opening door pressure vessel, and the second pipeline system is connected to the lower pipe opening of the third solenoid valve through the inner locking joint; during the functional test two, the first pipeline system is connected to the pressure gauge of the quick-opening door pressure vessel through the inner locking joint;

[0011] The inner locking joint includes a sealing top column, a sealing sleeve, and a first electromagnet. The first end of the sealing sleeve is a columnar structure, and the second end is provided with a accommodating cavity. The first electromagnet is installed in the accommodating cavity. The sealing top column passes through the second end of the sealing sleeve and the first electromagnet from the outside and is sealed and connected to the inner wall of the sealing sleeve.

[0012] The utility model tests the two requirements that the safety interlock device should meet through the safety interlock test device. The functional test of the safety interlock device is carried out safely and quickly through this test device, which is the first in China to realize the "non-destructive" functional test of the safety interlock device of the quick-opening pressure vessel in use; the pressure is directly applied to the pressure measuring device with a small amount of energy consumption to simulate the pressurized working condition of the quick-opening pressure vessel, thereby increasing the safety of the debugging work; the device uses the booster device to perform directional boosting on the relevant parts of the equipment body, which can save energy by more than 95% compared with the traditional debugging method. It is effective, safe and energy-saving.

[0013] The utility model ensures the sealing property and the accuracy of the safety interlocking test result by sealingly connecting the sealing top column and the sealing sleeve, and then sealingly connecting the sealing sleeve and the mounting hole, and generating magnetic force by the first electromagnet.

[0014] Preferably, the outer surface of the middle section of the sealing sleeve has more than one sealing cavity groove, the sealing cavity groove has a sealing ring built in, and the sealing cavity grooves are distributed at intervals.

[0015] Preferably, the accommodating cavity at the second end of the sealing sleeve is open at a side surface, and the first electromagnet is disposed in the accommodating cavity through the opening.

[0016] Preferably, the middle portion of the first electromagnet is penetrated, the sealing top column passes through the middle portion of the first electromagnet, and the outer wall of the sealing top column is sealed and connected to the inner wall of the sealing sleeve via a plurality of sealing rings.

[0017] Preferably, the sealing top column is in a T-shaped structure, and the end surface of the sealing top column is connected to the end surface of the sealing sleeve by a plurality of bolts.

[0018] Preferably, the center of the sealing top column penetrates axially to form an air path.

[0019] Preferably, the inner locking joint further comprises a magnet fixing block and a second electromagnet, the magnet fixing block and the accommodating cavity of the sealing sleeve are respectively located on both sides of the wall of the quick-opening door pressure vessel, and the second electromagnet is placed in the magnet fixing block.

[0020] Preferably, the magnet fixing block penetrates the middle of the second electromagnet and is substantially coaxial with the central axis of the sealing top column and the sealing sleeve.

[0021] The interlocking joint retention is enhanced by two electromagnets.

[0022] Preferably, when performing a functional test on the safety interlock device in a simulated case where the door or cover of the quick-opening door pressure vessel is not fully closed, the first pipeline body is connected to the upper pipe opening of the third solenoid valve of the quick-opening door pressure vessel, and the second pipeline system is connected to the lower pipe opening of the third solenoid valve of the quick-opening door pressure vessel through an inner locking joint;

[0023] When performing a functional test on the safety interlock device by simulating a situation where the internal pressure of the quick-opening door pressure vessel is not completely released, the first pipeline system is connected to the pressure gauge of the quick-opening door pressure vessel through an inner locking joint.

[0024] Preferably, the first pipeline system further includes a filter, an air pump, a first solenoid valve, a one-way valve, and a first pressure sensor which are sequentially arranged along the first pipeline body; the first pipeline system further includes an exhaust pipeline, which is connected to the first pipeline body and located between the one-way valve and the first pressure sensor, and the exhaust pipeline is also connected to a second solenoid valve;

[0025] The second pipeline system further includes a plug, which is located at the end of the second pipeline body.

[0026] The advantages of the utility model are:

[0027] (1) The utility model tests the two requirements that the safety interlock device should meet through the safety interlock test device. The safety interlock device can be safely and quickly tested for functionality through this test device, which is the first in China to implement "non-destructive" functional testing of the safety interlock device of the quick-opening pressure vessel in use; a small amount of energy is used to directly apply pressure to the pressure measuring device to simulate the pressurized working conditions of the quick-opening pressure vessel, thereby increasing the safety of the commissioning work; the device uses a booster device to perform directional boosting on the relevant parts of the equipment body, which can save more than 95% energy compared to traditional commissioning methods. It is effective, safe, and energy-saving.

[0028] (2) The utility model ensures the sealing performance and the accuracy of the safety interlock test result by sealing the top column and the sealing sleeve, and then sealing the sealing sleeve and the mounting hole, and generating magnetic force through the first electromagnet;

[0029] (2) The fixing effect of the inner locking joint is strengthened by two electromagnets. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of a quick-opening pressure vessel and a safety interlocking device in the background technology;

[0031] Figure 2 This is a schematic diagram of a functional test of a safety interlock device in an embodiment of the utility model;

[0032] Figure 3 This is a schematic diagram of a functional test of a safety interlock device in an embodiment of the utility model;

[0033] Figure 4 It is a sectional view of the installation of the inner locking connector in the embodiment of the utility model;

[0034] Figure 5 This is a schematic structural diagram of a sealing top column according to an embodiment of the utility model;

[0035] Figure 6 is a cross-sectional view of a sealing top column of an embodiment of the utility model;

[0036] Figure 7 It is a structural schematic diagram of a sealing sleeve in an embodiment of the utility model;

[0037] Figure 8 is a cross-sectional view of a sealing sleeve according to an embodiment of the utility model;

[0038] Fig. 9 This is a schematic diagram of the structure of the magnet fixing block of the embodiment of the utility model;

[0039] Fig.10 is a cross-sectional view of a magnet fixing block according to an embodiment of the utility model;

[0040] Numbers in the figure:

[0041] 1. First pipeline system; 11. Filter; 12. Air pump; 13. First solenoid valve; 14. One-way valve; 15. First pressure sensor; 16. Second solenoid valve;

[0042] 2. Second pipeline system; 21. Second pressure sensor; 22. Plug;

[0043] 3. Electrical control system; 31. Near-end control system; 32. Remote human-computer interaction system;

[0044] 4. The third solenoid valve; 41. Equipment air inlet;

[0045] 5. Pressure gauge; 51. Pressure gauge connection pipe;

[0046] 6. Safety interlock device for quick-opening pressure vessels;

[0047] 7. Internal locking joint; 71. Sealing top column; 711. First bolt hole; 712. Air path; 713. First sealing cavity groove;

[0048] 72, sealing sleeve; 721, second bolt hole; 722, accommodating cavity; 723, second sealing cavity groove;

[0049] 73. First electromagnet; 74. Magnet fixing block; 741. Mounting groove; 75. Second electromagnet; 76. Sealing ring; 8. Mounting hole. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] Embodiment 1:

[0052] like Figure 1 As shown, the right side of the quick-opening door pressure vessel is connected to the quick-opening door pressure vessel safety interlock device 6, and the right side of the quick-opening door pressure vessel includes a door or cover for entering the quick-opening door pressure vessel. The top of the quick-opening door pressure vessel includes a third solenoid valve 4 and a pressure gauge 5. The third solenoid valve 4 is used for gas to enter during use, and an equipment air inlet pipe 41 is provided at the bottom. The pressure gauge 5 is used to measure the internal pressure of the quick-opening door pressure vessel, and a pressure gauge pipe port 51 is provided at the bottom. In the prior art, the third solenoid valve 4 is connected to the quick-opening door pressure vessel safety interlock device 6 through the equipment safety interlock device signal transmission (I), and the pressure gauge is connected to the quick-opening door pressure vessel safety interlock device 6 through the equipment safety interlock device signal transmission (II).

[0053] Specifically, the principle of the safety interlock device of the quick-opening pressure vessel is briefly described as follows:

[0054] Before the operation of the quick-opening door pressure vessel, it is necessary to confirm whether the door or cover of the quick-opening door pressure vessel has reached the predetermined closing position. Only when the door or cover is closed to the predetermined position, the quick-opening door safety interlock device can transmit the signal that the door or cover has been closed to the predetermined position to the third solenoid valve 4 through the equipment safety interlock device signal transmission (I). The third solenoid valve 4 is allowed to be opened at this time, and the gas will enter the interior of the quick-opening door pressure vessel through the third solenoid valve 4, and the quick-opening door pressure vessel starts to increase pressure operation. In this way, the function of the safety interlock device 6 of the quick-opening door pressure vessel meets the first requirement stipulated in the regulations-when the door or cover of the quick-opening door pressure vessel reaches the predetermined position, it can increase pressure operation; otherwise, the third solenoid valve 4 cannot be opened, and the gas cannot enter the interior of the quick-opening door pressure vessel.

[0055] After the operation of the quick-opening pressure vessel is completed, before opening the door or cover of the quick-opening pressure vessel, it is necessary to confirm whether the internal pressure of the container is completely released. Only when the internal pressure of the container is completely released, the pressure gauge 5 used to measure the internal pressure of the container transmits the signal that the internal pressure of the container has been completely released to the door or cover of the quick-opening pressure vessel through the signal transmission (II) of the equipment safety interlock device, and the door or cover of the quick-opening pressure vessel is automatically unlocked and allowed to be opened. In this way, the function of the safety interlock device 6 of the quick-opening pressure vessel meets the second requirement stipulated in the regulations-the quick-opening door can be opened only when the internal pressure of the pressure vessel is completely released; otherwise, the door or cover of the quick-opening pressure vessel cannot be opened. The equipment and components contained in the figure are the main body of the quick-opening pressure vessel to be tested and its own accessories, not the components of the test device.

[0056] In this embodiment, Figure 2 , Figure 3 As shown, the safety interlock test device for a quick-opening pressure vessel includes a first pipeline system 1, a second pipeline system 2, and an electrical control system 3; the first pipeline system 1 and the second pipeline system 2 are both connected to the electrical control system 3. Thus, the program predetermined function is realized. In this embodiment, a lithium battery power supply (not shown in the figure) should also be included, and the lithium battery power supply is electrically connected to the electrical control system 3, the first pipeline system 1, and the second pipeline system 2 to realize power supply.

[0057] The electrical control system 3 includes a proximal control system 31 and a remote human-computer interaction system 32, wherein the proximal control system 31 is located near the quick-opening door pressure vessel, and the remote human-computer interaction system 32 is located far away from the quick-opening door pressure vessel. The proximal control system 31 is communicatively connected with the remote human-computer interaction system 32, and the proximal control system 31 is electrically connected to both the first pipeline system 1 and the second pipeline system 2.

[0058] like Figure 2 As shown, during the functional test 1, the first pipeline system 1 and the second pipeline system 2 are respectively connected to the upper pipe opening and the lower pipe opening of the third solenoid valve 4 of the quick-opening pressure vessel through the inner locking joint 7; Figure 3 As shown, during the second functional test, the first pipeline system is connected to the pressure gauge of the quick-opening door pressure vessel via an inner locking joint 7.

[0059] like Figure 2 , Figure 3 As shown, the first pipeline system 1 includes a first pipeline body, and a filter 11, an air pump 12, a first solenoid valve 13, a one-way valve 14, and a first pressure sensor 15 which are sequentially installed on the first pipeline body from the air inlet end; an exhaust pipeline is also connected between the one-way valve 14 and the first pressure sensor 15, and a second solenoid valve 16 is also connected to the exhaust pipeline. Figure 2It can be seen that one end of the first pipeline body is the air inlet end, from which the ambient gas enters, and the other end is connected to the upper pipe opening of the third solenoid valve 4 through an inner locking joint 7. The second pipeline system 2 includes a second pipeline body and a second pressure sensor 21 and a plug 22 installed on the second pipeline body; the second pipeline body and the lower pipe opening of the third solenoid valve 4 are connected to the equipment air inlet pipe opening 41 through an inner locking joint 7'.

[0060] It should be noted that the first pipeline system 1 and the second pipeline system 2 are connected to the quick-opening pressure vessel at different locations when performing different tests; Figure 2 As shown, the first pipeline system 1 and the second pipeline system 2 are both connected to the third solenoid valve 4; Figure 3 As shown, only the first pipeline system 1 is connected to the pressure gauge 5. The detailed description is as follows.

[0061] like Figure 2 As shown, the safety interlock device is functionally tested when the door or cover of the simulated quick-opening pressure vessel is not fully closed (i.e., the door or cover is in an open or half-open state); the third solenoid valve 4 that controls the air intake cannot be opened according to the regulations, and the air intake into the quick-opening pressure vessel cannot be realized. This embodiment uses the test device to test whether this function of the equipment safety interlock device meets the requirements.

[0062] After the first pipeline system 1 and the second pipeline system 2 are connected to the third solenoid valve 4, the control test can be performed through the electrical control system 3. Specifically, the electrical control system 3 controls the air pump 12 to work, opens the first solenoid valve 13, sets the target pressure to 0.5 MPa, and the ambient gas is Figure 2 Enter the first pipeline system 1 in the direction shown. When the first pressure sensor 15 shows that the pressure reaches 0.5MPa, the air intake automatically stops running and maintains the pressure. During the process of increasing and maintaining pressure, the tester clicks to run the opening program of the third solenoid valve 4 of the quick-opening pressure vessel. If the first pressure sensor 15 has a stable pressure indication, and the second pressure sensor 21 has no pressure indication, it means that the safety interlock device 6 of the quick-opening pressure vessel is normal, the third solenoid valve 4 is not opened and there is no internal leakage; if the first pressure sensor 15 has a pressure indication, the second pressure sensor 21 also has a pressure indication and is close to or consistent with the indication of the first pressure sensor 15, it means that the safety interlock device 6 of the quick-opening pressure vessel is completely invalid, the third solenoid valve 4 is opened or the third solenoid valve 4 is completely invalid; if the first pressure sensor 15 has a normal pressure indication, the second pressure sensor 21 has a pressure indication but the value is smaller than that of the first pressure sensor 15, it means that there is a problem with the safety interlock device 6 of the quick-opening pressure vessel, the third solenoid valve 4 may be opened or the third solenoid valve 4 itself has a weak internal leakage.

[0063] After the air intake is completed, the pressure in the pipeline is discharged through the second solenoid valve 16, and then the first pipeline system 1 can be removed.

[0064] like Figure 3 As shown, this embodiment uses only the first pipeline system 1 to simulate the pressurized state of the quick-opening door pressure vessel (ie, the internal pressure of the quick-opening door pressure vessel is not completely released) to perform a functional test on the safety interlock device.

[0065] The traditional test method requires the entire cavity of the quick-opening pressure vessel to be pressurized by air intake. The internal pressure of the vessel acts on the pressure gauge 5. The pressure gauge 5 displays the pressure and transmits the signal of internal pressure to the safety interlock device 6 of the quick-opening pressure vessel through the signal transmission of the equipment safety interlock device (II). At this time, the door or cover of the quick-opening pressure vessel should not be opened. Otherwise, the safety interlock device fails.

[0066] In this embodiment, the first pipeline system 1 is connected to the pressure gauge pipe port 51 of the pressure gauge 5 through the inner locking joint 7, and specifically, the end of the first pipeline body is connected to the pressure gauge pipe port 51 through the inner locking joint 7. After the connection is completed, the control test can be performed through the remote human-computer interaction system 32 or the near-end control system 31. The process requires a preset running program, delayed execution (the time can be preset), and automatic exhaust stops after a certain period of operation (the time can be preset), so as to realize the directional pressurization of the pressure gauge 5 with a very small gas flux, thereby simulating the pressure condition of the quick-opening device.

[0067] It should be noted that: because this test requires the quick-opening pressure vessel to be completely closed, the quick-opening pressure vessel is a closed metal cavity, and the wireless signal cannot effectively interact in real time. Therefore, a preset method is used to allow the device to automatically run and stop. For example: the preset target pressure is 0.5MPa, the preset delay execution time is 5 minutes, and the preset pressure holding operation time is 5 minutes. The test device will start air intake and pressurization 5 minutes after the preset completion, and enter the pressure holding operation stage when the pressure increases to 0.5MPa, and start exhaust after 5 minutes of pressure holding.

[0068] After the program preset is completed, close the quick-opening pressure vessel, and after the running time is reached, observe the indication of the pressure gauge 5 of the quick-opening pressure vessel equipment. In this embodiment, the preset target pressure is 0.2MPa, and the pressure-maintaining operation time is 5 minutes. Because the pressure measuring device of the quick-opening pressure vessel body, the pressure gauge 5, is subjected to directional pressurization, the pressure gauge 5 will have the same pressure display of 0.2MPa, so as to simulate the environment where there is pressure inside the container. The indication of the pressure gauge 5 indicates that the pressure inside the container has not been completely released, and the door or cover of the quick-opening pressure vessel should not be opened. During the pressure-maintaining operation stage, click to run the quick-opening door or cover opening program. If the door or cover of the quick-opening pressure vessel is opened, it means that the safety interlock device 6 of the quick-opening pressure vessel has failed.

[0069] After the preset instruction ends, the device automatically discharges the pressure in the pipeline through the second solenoid valve 16, opens the quick-opening door pressure container, releases the connection between the inner locking joint 7 and the first pipeline system 1, and the test process ends.

[0070] This embodiment uses the safety interlock test device to test the two requirements that the safety interlock device should meet. This embodiment uses this set of test devices to safely and quickly test the functionality of the safety interlock device, and is the first in China to implement "non-destructive" functional testing of the safety interlock device of the quick-opening pressure vessel in use; the test device can use a remote wireless control system and a small amount of energy consumption to directly apply pressure to the pressure measuring device to simulate the pressurized working conditions of the quick-opening pressure vessel, thereby increasing the safety of the commissioning work; the device uses a booster device to perform directional boosting on the relevant parts of the equipment body, which can save energy by more than 95% compared with the traditional commissioning method; the booster device is fixed at the internal pipe mouth of the container by a quick-connect connector that adapts to different structural types. The device has good applicability and can be used for equipment of different structural types and materials. It has effectiveness, safety, energy saving, and applicability.

[0071] The signal wires are used to connect the components to the main controller to realize signal transmission and ensure safety; the booster device is used to perform directionally boost pressure on the relevant parts of the equipment body to achieve energy saving.

[0072] like Figure 4 As shown, reference Figure 7 As shown, the inner locking joint 7 includes a sealing top column 71, a sealing sleeve 72, and a first electromagnet 73. The first end of the sealing sleeve 72 is a columnar structure, and the second end is provided with a accommodating cavity 722. The first electromagnet 73 is installed in the accommodating cavity 722. The sealing top column 71 passes through the second end of the sealing sleeve 72 and the first electromagnet 73 from the outside and is sealed and connected to the inner wall of the sealing sleeve 72.

[0073] It should be noted that: in this embodiment, the first end of the sealing sleeve 72 refers to Figure 4 The top end of the sealing pressure column 71 is also the top end. The mounting hole wall referred to in this embodiment is the mounting hole of the quick-opening pressure vessel, the pipe mouth of the third solenoid valve 4, and refers to the position where the inner locking joint 7 is installed, generally referring to the hole.

[0074] like Figure 5 , Figure 6 As shown, refer to Figure 4 The sealing top column 71 is in a T-shaped structure, and six first bolt holes 711 are evenly distributed on the bottom plate of the sealing top column 71. Figure 7As shown, the bottom of the sealing sleeve 72 is provided with six corresponding second bolt holes 721, so the end surface of the sealing top column 71 is connected to the end surface of the sealing sleeve 72 by multiple bolts. The center of the sealing top column 71 is axially penetrated to form a gas path 712. The outer surface of the middle section of the sealing sleeve 72 has more than one first sealing cavity groove 713, and the first sealing cavity groove 713 has a built-in sealing ring 76, and the first sealing cavity groove 713 is spaced apart along the height direction.

[0075] like Figure 7 , Figure 8 As shown, refer to Figure 4 As shown, the accommodating cavity 722 of the second end of the sealing sleeve 72 is open at the side, and the first electromagnet 73 is disposed in the accommodating cavity 722 through the opening. The middle of the first electromagnet 73 is penetrated, and the sealing top column 71 passes through the middle penetration of the first electromagnet 73. The outer wall of the sealing top column 71 is sealed and connected to the inner wall of the sealing sleeve 72 through a plurality of sealing rings 76. The outer wall of the sealing sleeve 72 is also provided with a plurality of second sealing cavity grooves 723, and the second sealing cavity grooves 723 are connected with sealing rings 76'. The sealing sleeve 72 is also penetrated in the axial direction.

[0076] like Fig. 9 , Fig.10 As shown, reference Figure 4 As shown, the inner locking joint 7 also includes a magnet fixing block 74 and a second electromagnet 75. The magnet fixing block 74 and the accommodating cavity 722 of the sealing sleeve 72 are respectively located on both sides of the wall of the quick-opening door pressure vessel. The magnet fixing block 74 has a mounting groove 741, and the second electromagnet 75 is placed in the mounting groove 741 of the magnet fixing block 74. The middle of the magnet fixing block 74 and the second electromagnet 75 penetrate and are roughly coaxial with the central axis of the sealing top column 71 and the sealing sleeve 72. Roughly coaxial means that the axis deviates by no more than 1 / 2 of the inner diameter of the mounting hole 8. The fixing effect of the inner locking joint is strengthened by two electromagnets.

[0077] The installation process of this embodiment:

[0078] An O-ring 76' is installed and connected in the second sealing cavity groove 723 of the sealing sleeve 72 to play a sealing role; the matching first sealing electromagnet 73 is placed in the side opening position of the sealing sleeve 72; the O-ring 76 is installed in the first sealing cavity groove 713 of the sealing top column 71, and then the sealing top column 71 is installed in the sealing sleeve 72, and fixed with bolts through the first threaded hole 711 and the second threaded hole 721. The assembled sealing sleeve 72 and the sealing top column 71 are installed in the installation 8 of the quick-opening pressure vessel, and the first electromagnet 73 is energized to generate magnetic fixation. The other second electromagnet 75 is installed in the magnet fixing block 74 and placed on the other side of the corresponding pipe hole position to generate magnetic force to strengthen the fixing effect of the inner locking joint. After the inner locking joint 7 is installed, it is connected to the gas pipeline with a conventional ferrule.

[0079] This embodiment ensures sealing performance and accurate safety interlock test results by sealing the top column and the sealing sleeve 72, and then sealing the sealing sleeve 72 and the mounting hole 8, and generating magnetic force through the first electromagnet 73 and the second electromagnet 75.

[0080] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An inner locking joint of a quick-opening pressure vessel safety interlock test device, characterized in that: It includes a first piping system, a second piping system, and an inner locking joint; during the functional test 1, the first piping system is connected to the upper pipe opening of the third solenoid valve of the quick-opening door pressure vessel, and the second piping system is connected to the lower pipe opening of the third solenoid valve through the inner locking joint; during the functional test 2, the first piping system is connected to the pressure gauge of the quick-opening door pressure vessel through the inner locking joint; The inner locking joint includes a sealing top column, a sealing sleeve, and a first electromagnet. The first end of the sealing sleeve is a columnar structure, and the second end is provided with a accommodating cavity. The first electromagnet is installed in the accommodating cavity. The sealing top column passes through the second end of the sealing sleeve and the first electromagnet from the outside and is sealed and connected to the inner wall of the sealing sleeve.

2. The inner locking joint of the safety interlocking test device for a quick-opening pressure vessel according to claim 1, characterized in that: The outer surface of the middle section of the sealing sleeve is provided with more than one sealing cavity groove, the sealing cavity groove has a sealing ring built in, and the sealing cavity grooves are distributed at intervals.

3. The inner locking joint of the safety interlocking test device for a quick-opening pressure vessel according to claim 1, characterized in that: The accommodating cavity at the second end of the sealing sleeve is open at a side surface, and the first electromagnet is disposed in the accommodating cavity through the opening.

4. The inner locking joint of the safety interlocking test device for a quick-opening pressure vessel according to claim 1, characterized in that: The middle part of the first electromagnet is penetrated, the sealing top column passes through the middle part of the first electromagnet, and the outer wall of the sealing top column is sealed and connected with the inner wall of the sealing sleeve through a plurality of sealing rings.

5. The inner locking joint of the safety interlocking test device for a quick-opening pressure vessel according to claim 1, characterized in that: The sealing top column is in a T-shaped structure, and the end surface of the sealing top column is connected to the end surface of the sealing sleeve through a plurality of bolts.

6. The inner locking joint of the safety interlocking test device for a quick-opening pressure vessel according to claim 1, characterized in that: The center of the sealing top column penetrates axially to form an air path.

7. The inner locking joint of the safety interlocking test device for a quick-opening pressure vessel according to claim 1, characterized in that: The inner locking joint also includes a magnet fixing block and a second electromagnet. The magnet fixing block and the accommodating cavity of the sealing sleeve are respectively located on both sides of the wall of the quick-opening door pressure container, and the second electromagnet is placed in the magnet fixing block.

8. The inner locking joint of the safety interlocking test device for a quick-opening pressure vessel according to claim 7, characterized in that: The magnet fixing block penetrates the middle part of the second electromagnet and is substantially coaxial with the central axis of the sealing top column and the sealing sleeve.

9. The inner locking joint of the safety interlocking test device for a quick-opening pressure vessel according to claim 1, characterized in that: When performing a functional test on the safety interlock device in a simulated situation where the door or cover of the quick-opening door pressure vessel is not fully closed, the first pipeline system is connected to the upper pipe opening of the third solenoid valve of the quick-opening door pressure vessel, and the second pipeline system is connected to the lower pipe opening of the third solenoid valve of the quick-opening door pressure vessel through an inner locking joint; When performing a functional test on the safety interlock device by simulating a situation where the internal pressure of the quick-opening door pressure vessel is not completely released, the first pipeline system is connected to the pressure gauge of the quick-opening door pressure vessel through an inner locking joint.

10. The inner locking joint of the safety interlocking test device for a quick-opening pressure vessel according to claim 1, characterized in that: The first pipeline system further includes a filter, an air pump, a first solenoid valve, a one-way valve, and a first pressure sensor which are sequentially arranged along the first pipeline body; the first pipeline system further includes an exhaust pipeline, which is connected to the first pipeline body and located between the one-way valve and the first pressure sensor, and the exhaust pipeline is also connected to a second solenoid valve; The second pipeline system includes a second pipeline body, a second pressure sensor and a plug installed on the second pipeline body, and the plug is located at the end of the second pipeline body.

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