Simulation training device for electrical five-prevention interlocking operation

Abstract

The invention belongs to the technical field of nuclear power training, and relates to a simulation training device for electrical five-prevention interlocking operation, which comprises an interlocking key simulator, a simulation training device, a simulation training device, a simulation training device and a simulation training device. The bottom of the interlocking key simulator is provided with a circular key jack, and the middle of the circular key jack is provided with an annular cylindrical key earphone jack; a cylindrical key earphone plug matched with the key earphone jack is arranged in the middle of a cylindrical structure at the front end of the simulation key, and the key ID number is transmitted to the key earphone jack through the key earphone plug; the simulation key detection module is used for detecting an insertion state or a rotation in-place state of a simulation key; the simulation key control module is used for opening or closing a channel for limiting columnar key teeth of the key and allowing or forbidding the simulation key to rotate in the circular key insertion hole; and the interlocking logic module is used for generating a simulation key control instruction according to the key ID number or the insertion state or the rotation in-place state of the simulation key, and controlling the simulation key control module to open or close a channel for limiting the columnar key teeth of the key.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power training, and in particular relates to a simulation training device for electrical five-protection interlocking operation. Background Art

[0002] The current problem is that the logic design of the five-protection interlocking system in nuclear power plants is complex, and operation training cannot be carried out on actual equipment.

[0003] The safe and stable operation of electrical system equipment is an important guarantee for the safety of nuclear power plants. The mechanical interlocking device of the whole plant is the key equipment to realize the "five-prevention" interlocking function requirements of electrical equipment. The mechanical interlocking logic of the whole plant is constructed through the mechanical interlocking function between different electrical equipment. This system is designed to prevent human errors in electrical operations and ensure that operators operate in the specified order, otherwise subsequent operations cannot be performed. After the nuclear power plant is completed and put into operation, all equipment systems must be maintained in the state required by the technical specifications and cannot be changed at will. Therefore, the five-prevention interlocking needs to be changed according to the changes in the unit status and cannot be operated at will. Most of the electrical equipment involved in interlocking are relatively critical and sensitive. The operating personnel are mainly trained through theoretical learning and cannot conduct practical training on actual equipment, which increases the risk of misoperation during actual operation. Summary of the invention

[0004] The purpose of the present invention is to provide a simulation training device for electrical five-defense interlocking operation, which can be used for daily training of electrical five-defense interlocking operation in nuclear power plants, simulating the operation process of actual electrical five-defense interlocking equipment, and the lock core number, key ID number, and interlocking logic module in the device are all editable and configurable, and can automatically change according to actual operation information. Through the combination of multiple devices, all electrical five-defense interlocking key operations can be met.

[0005] The technical solution to achieve the purpose of the present invention is:

[0006] A simulation training device for electrical five-defense interlocking operation, the device comprising an interlocking key simulator, a simulated key, a simulated key detection module, a simulated key control module, and an interlocking logic module;

[0007] A circular key jack is arranged at the bottom of the simulator shell at the bottom of the interlocking key simulator, a raised key tooth guide groove is arranged on the circular key jack, and a ring-shaped cylindrical key earphone jack is arranged in the middle of the circular key jack;

[0008] The front end of the simulated key is a cylindrical structure, and the cylindrical structure at the front end of the simulated key is provided with key columnar key teeth along the outer circumference, and the key columnar key teeth match the key key tooth guide groove; a columnar key earphone plug is provided in the middle of the cylindrical structure at the front end of the simulated key, and the key earphone plug matches the key earphone jack; when the key earphone plug contacts the key earphone jack, the key ID number is transmitted to the key earphone jack through the key earphone plug;

[0009] The simulated key detection module and the simulated key control module are arranged in the circular key insertion hole; the simulated key detection module is used to detect the insertion state or the rotation state of the simulated key; the simulated key control module is used to open or close the channel of the restricted key cylindrical key teeth; when the channel of the restricted key cylindrical key teeth is opened, the simulated key is allowed to rotate in the circular key insertion hole; when the channel of the restricted key cylindrical key teeth is closed, the simulated key is prohibited from rotating in the circular key insertion hole;

[0010] The interlocking logic module is used to generate a simulated key control instruction according to the key ID number or the inserted state of the simulated key or the rotated state of the simulated key, and control the simulated key control module to open or close the channel of the cylindrical key teeth of the restriction key.

[0011] The simulated key detection module includes a micro switch and a ladder-shaped protrusion structure; two micro switches are arranged at intervals along the circumferential direction inside the circular key socket; a ladder-shaped protrusion structure is provided along the outer circumference of the cylindrical structure at the front end of the simulated key, and the ladder-shaped protrusion structure matches the micro switch; the micro switch is squeezed open by the ladder-shaped protrusion structure to detect the insertion state or rotation state of the simulated key.

[0012] The simulated key control module includes a circular key socket base, a motor bracket, a DC screw reduction motor, a key rotation block, and a key rotation block bow structure; a circular key socket base is arranged inside the circular key socket below the bottom of the simulator face shell, and the circular key socket base is provided with an arc-shaped limit step and a fixing hole for fixing the key sensor PCB board and the motor bracket; a DC screw reduction motor is arranged on the motor bracket, and the screw of the DC screw reduction motor is connected to the key rotation block through the screw hole of the key rotation block, and the DC screw reduction motor can drive the key rotation block to lift and fall through the screw when rotating forward or reversely; the key rotation block bow structure is connected to the key rotation block, and when the key rotation block is lifted, the key rotation block bow structure is lifted up with it, and at this time, the channel that restricts the key columnar key teeth is opened, allowing the simulated key to rotate in the circular key socket; when the key rotation block falls, the key rotation block bow structure follows and falls, and at this time, the channel that restricts the key columnar key teeth is closed, and the simulated key is prohibited from rotating in the circular key socket.

[0013] The simulated key control module also includes a limit sensor, which is arranged on the key sensor PCB board and is used to sense the lifting and falling of the key rotation stopper.

[0014] The device also includes a marble and a marble clamping point; a marble is arranged inside the circular key socket along the circumferential direction; two hemispherical inwardly recessed marble clamping points are arranged at intervals along the outer circumference of the cylindrical structure at the front end of the simulated key, and the marble clamping points match the marble; the marble is sunken into the marble clamping point, indicating that the simulated key is rotated into place in the circular key socket.

[0015] The device also includes a simulated key tag, which is arranged on the simulated key and is used to display information such as the key ID number and the simulated key control instructions.

[0016] The simulated key tag is provided with a communication cable. When the simulated key is inserted into the round key socket, the key earphone plug of the interlock key simulator powers the simulated key tag through the communication cable, and can update the displayed content on the simulated key tag according to the simulated key control instructions generated by the interlocking logic module; after the simulated key is pulled out, the content displayed on the simulated key tag does not disappear.

[0017] The simulated key tag is an electronic ink screen.

[0018] The beneficial technical effects of the present invention are:

[0019] 1. The present invention provides a simulation training device for electrical five-defense interlocking operation, which effectively controls the rotation of a simulated key in a circular key socket through a simulated key detection module, a simulated key control module, and an interlocking logic module, thereby preventing the simulated key from rotating accidentally in the circular key socket and causing electrical five-defense interlocking operation errors.

[0020] 2. In the simulation training device for electrical five-defense interlocking operation provided by the present invention, the lock core number, key ID number, and interlocking logic module are all editable and configurable, and can automatically change according to actual operation information, which is suitable for various electrical five-defense interlocking key operation training.

[0021] 3. Through the combination of multiple simulation training devices for electrical five-defense interlocking operations provided by the present invention, all electrical five-defense interlocking key operations can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the assembly structure of an interlock key simulator in a simulation training device for electrical five-protection interlocking operation provided by the present invention;

[0023] Figure 2 A schematic diagram of the structure of a simulated key in a simulated training device for electrical five-protection interlocking operation provided by the present invention;

[0024] Figure 3 A schematic diagram of the structure of the internal limit sensor of the simulator shell in a simulation training device for electrical five-protection interlocking operation provided by the present invention;

[0025] Figure 4 A schematic diagram of the positioning structure inside the simulator shell in a simulation training device for electrical five-protection interlocking operation provided by the present invention;

[0026] Figure 5 A schematic diagram of a sliding control structure of a simulated key lock block in a simulated training device for electrical five-protection interlocking operation provided by the present invention;

[0027] Figure 6 A schematic diagram of a key rotation position detection structure in a simulation training device for electrical five-protection interlocking operation provided by the present invention;

[0028] Figure 7 A schematic diagram of a key insertion detection structure in a simulation training device for electrical five-protection interlocking operation provided by the present invention;

[0029] Figure 8 A schematic diagram of the structure of a simulated key tag in a simulated training device for electrical five-protection interlocking operation provided by the present invention;

[0030] Fig. 9 This is an operation flow chart of a simulation training device for electrical five-protection interlocking operation provided by the present invention.

[0031] In the figure: 1. Interlock key simulator; 2. Simulated key; 3. Simulator cover; 4. Round key socket; 5. Key tooth guide groove; 6. Key headphone socket; 7. Micro switch; 8. DC screw reduction motor; 9. Motor bracket; 10. Key rotation block; 11. Key rotation block arch structure; 12. Marble; 13. Round key socket base; 14. Limit sensor; 15. Key columnar tooth; 16. Ladder-shaped protrusion structure; 17. Key headphone plug; 18. Marble card point; 19. Simulated key tag; 20. Electronic ink screen; 21. Communication cable. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0033] like Figure 1-7 As shown, a simulation training device for electrical five-defense interlocking operation provided by the present invention includes an interlocking key simulator 1, a simulation key 2, a simulation key detection module, a simulation key control module, and an interlocking logic module.

[0034] The interlock key simulator 1 is a combined cube or rectangular structure. A circular key socket 4 is arranged below the bottom of the simulator shell 3 at the bottom of the interlock key simulator 1. A raised key tooth guide groove 5 is arranged above the arc of the circular key socket 4. An annular cylindrical key earphone socket 6 is arranged in the middle of the circular key socket 4. The key earphone socket 6 has a spring embedded in it that is higher than the hole position.

[0035] The simulated key 2 is a cylindrical structure at the front end and a flat fan-shaped structure at the rear end. The cylindrical structure at the front end of the simulated key 2 is provided with a key cylindrical key tooth 15 along the outer circumference, and the key cylindrical key tooth 15 matches the key key tooth guide groove 5; preferably, the key cylindrical key tooth 15 is arranged above the outer arc front of the cylindrical structure at the front end of the simulated key 2 and in the flat direction of the flat fan-shaped structure at the rear end. A cylindrical key earphone plug 17 is arranged in the middle of the cylindrical structure at the front end of the simulated key 2, and the key earphone plug 17 matches the key earphone jack 6. When the key earphone plug 17 contacts the key earphone jack 6, the key ID number is transmitted to the key earphone jack 6 through the key earphone plug 17. Both the lock cylinder number and the key ID number can be edited and configured.

[0036] The simulated key detection module and the simulated key control module are arranged in the circular key insertion hole 4. The simulated key detection module is used to detect the insertion state or the rotation state of the simulated key 2. The simulated key control module is used to open or close the passage of the limiting key cylindrical key teeth 15; when the passage of the limiting key cylindrical key teeth 15 is opened, the simulated key 2 is allowed to rotate in the circular key insertion hole 4; when the passage of the limiting key cylindrical key teeth 15 is closed, the simulated key 2 is prohibited from rotating in the circular key insertion hole 4.

[0037] The interlocking logic module is used to generate a simulated key control instruction according to the key ID number or the insertion state of the simulated key 2 or the rotation state of the simulated key 2, and control the simulated key control module to open or close the channel of the restricted key cylindrical key teeth 15 according to the control instruction.

[0038] In a specific embodiment, the simulated key detection module, the interlocking logic module, and the simulated key control module are connected in sequence. The simulated key detection module detects the insertion status of the simulated key 2 and sends the insertion status to the interlocking logic module. The interlocking logic module reads the key ID number, determines whether the simulated key 2 meets the authorization requirements, generates a simulated key control instruction (including an unlocking instruction and a locking instruction) based on the judgment result, and sends the simulated key control instruction to the simulated key control module. The simulated key control module is controlled to open or close the channel that restricts the key columnar key teeth 15 according to the simulated key control instruction, and allows or prohibits the simulated key 2 from rotating in the circular key socket 4.

[0039] In another specific embodiment, the simulated key detection module, the interlocking logic module, and the simulated key control module are connected in sequence, the simulated key detection module detects the insertion status or the rotation status of the simulated key 2, and sends the insertion status or the rotation status to the interlocking logic module. The interlocking logic module generates a simulated key control instruction (including an unlocking instruction and a locking instruction) according to the insertion status or the rotation status of the simulated key 2, and sends the simulated key control instruction to the simulated key control module, which controls the simulated key control module to open or close the channel that restricts the key columnar key teeth 15 according to the simulated key control instruction, and allows or prohibits the simulated key 2 from rotating in the circular key socket 4.

[0040] The simulated key detection module includes a micro switch 7 and a ladder-shaped protrusion structure 16. Two micro switches 7 are arranged at intervals along the circumferential direction inside the circular key insertion hole 4. Preferably, the two micro switches 7 form an angle of 90 degrees along the circumferential direction. The front cylindrical structure of the simulated key 2 is provided with a ladder-shaped protrusion structure 16 along the outer circumference, and the ladder-shaped protrusion structure 16 matches the micro switch 7. Preferably, the ladder-shaped protrusion structure 16 is arranged below the outer arc front of the front cylindrical structure of the simulated key 2 and in the flat direction of the flat fan-shaped structure at the rear end. The micro switch 7 is squeezed open by the ladder-shaped protrusion structure 16 to detect the insertion state or the rotation state of the simulated key 2.

[0041] The simulated key control module includes a circular key jack base 13, a motor bracket 9, a DC screw reduction motor 8, a key rotation block 10, and a key rotation block arch structure 11. A circular key jack base 13 is provided inside the circular key jack 4 below the bottom of the simulator face shell 3, and the circular key jack base 13 is provided with an arc-shaped limit step and a fixing hole for fixing the key sensor PCB board and the motor bracket 9. The motor bracket 9 is a frame-shaped triangle, and a DC screw reduction motor 8 is arranged on the motor bracket 9. The screw of the DC screw reduction motor 8 is connected to the key rotation block 10 through the screw hole of the key rotation block 10. The DC screw reduction motor 8 can drive the key rotation block 10 to lift and fall through the screw when it rotates forward or reversely; the key rotation block arch structure 11 is connected to the key rotation block 10, and when the key rotation block 10 is lifted, the key rotation block arch structure 11 is lifted up accordingly, and at this time, the channel for restricting the key columnar key teeth 15 is opened, allowing the simulated key 2 to rotate in the circular key socket 4; when the key rotation block 10 falls, the key rotation block arch structure 11 falls down accordingly, and at this time, the channel for restricting the key columnar key teeth 15 is closed, prohibiting the simulated key 2 from rotating in the circular key socket 4.

[0042] The simulated key control module further includes a limit sensor 14 , which is disposed on a key sensor PCB board and is used to sense the lifting and falling of the key rotation stopper 10 .

[0043] The device of the present invention also includes a marble 12 and a marble clamping point 18. The interior of the circular key socket 4 is provided with a marble 12 along the circumferential direction. Preferably, the marble 12 is arranged inside the circular key socket 4 along the arc side and at a 45-degree angle with the bottom. The front end cylindrical structure of the simulated key 2 is provided with two hemispherical inwardly recessed marble clamping points 18 at intervals along the outer circumference, and the marble clamping points 18 match the marble 12. Preferably, the two marble clamping points 18 are arranged at a position where the outer arc side of the front end cylindrical structure of the simulated key 2 forms an angle of 45 degrees with the arc bottom. The marble 12 is sunken into the marble clamping point 18, indicating that the simulated key 2 is rotated into place in the circular key socket 4.

[0044] During the clockwise or counterclockwise rotation of the simulated key 2, when the marble stuck point 18 reaches the position where the marble 12 is arranged inside the circular key hole 4 along the arc side and at a 45-degree angle with the bottom, the marble 12 sinks into the marble stuck point 18 as the marble stuck point 18 moves, making a "click" sound, and a good feel of rotation into place is obtained due to the jamming of the rotation.

[0045] like Figure 8 As shown, the device of the present invention further includes a simulated key tag 19, which is arranged on the simulated key 2 and is used to display information such as the key ID number, simulated key control instructions, etc. Preferably, the simulated key tag 19 is an electronic ink screen 20.

[0046] The simulated key tag 19 is provided with a communication cable 21. When the simulated key 2 is inserted into the round key jack 4, the key earphone plug 17 of the interlock key simulator 1 supplies power to the simulated key tag 19 through the communication cable 21, and can update the display content on the simulated key tag 19 according to the simulated key control instruction generated by the interlock logic module. After the simulated key 2 is pulled out, the content displayed on the simulated key tag 19 does not disappear.

[0047] The simulation training device for the electrical five-protection interlocking operation provided by the present invention is used to carry out simulation training for the electrical five-protection interlocking operation, as follows:

[0048] like Fig. 9As shown, when the interlock key simulator 1 obtains authorization and needs to unlock, the key cylindrical key tooth 15 at the front end of the simulated key 2 is aligned with the raised key key tooth guide groove 5 set above the arc of the circular key hole 4 at the bottom of the simulator face shell 3 and inserted into the circular key hole 4; with the insertion of the key 2, the key earphone plug 17 in the middle of the cylindrical front end of the key contacts the annular cylindrical key earphone jack 6, which can power the simulated key tag 19 and transmit the key ID number at the same time; with the insertion of the simulated key 2, the ladder-shaped raised structure 16 set at the lower front of the front end of the cylindrical outer arc and the flat fan-shaped flat direction of the rear end of the simulated key 2 squeezes and opens the micro switch 7 at the bottom so that the interlock key simulator 1 can detect the key insertion status. When the interlock key simulator 1 detects the key insertion, it sends a status notification to the host computer interlock logic module, and the host computer interlock logic module sends a command to read the key ID number to determine whether the authorization requirements are met; if the authorization requirements are met The right requires that the DC screw reduction motor 8 rotates forward and drives the key rotation block 10 to lift up through the screw, and the key rotation block arch structure 11 follows to lift up, at this time the channel that limits the key columnar key teeth 15 is opened, allowing the simulated key 2 to rotate; at this time, the key can be rotated 90 degrees clockwise, and the ladder-shaped protrusion structure 16 set at the front lower front of the cylindrical outer arc of the simulated key 2 and the flat fan-shaped flat direction of the rear end squeezes and opens the side micro switch 7 so that the interlocking key simulator 1 can detect the state of the key after rotation. After the interlocking key simulator 1 detects that the key has rotated to the corresponding position, it sends the current position state to the upper computer interlocking logic module. The upper computer interlocking logic module sends a command to the interlocking key simulator 1 to lock, then the DC screw reduction motor 8 rotates in the opposite direction and drives the key rotation block 10 to fall down through the screw, and the key rotation block arch structure 11 follows to fall, at this time the channel that limits the key columnar key teeth 15 is closed, and the key is prohibited from rotating.

[0049] like Fig. 9As shown, when the interlock key simulator 1 obtains authorization and needs to lock, the upper computer interlock logic module sends a command to unlock the interlock key simulator 1, then the DC screw reduction motor 8 rotates forward and drives the key rotation block 10 to lift up through the screw, and the key rotation block arch structure 11 follows and lifts up, at this time, the channel that restricts the key columnar key teeth 15 is opened, allowing the simulated key 2 to rotate; at this time, the key can be rotated 90 degrees counterclockwise to return to the origin, and the ladder-shaped protrusion structure 1 set in the lower front of the cylindrical outer arc of the front end of the simulated key 2 and the flat fan-shaped flat rear end 6 leaves the micro switch 7 on the side to close so that the interlock key simulator 1 can detect the state of the key after rotation. After the interlock key simulator 1 detects that the key has rotated back to the original position, it sends the current position state to the upper computer interlock logic module, pulls out the key, and simulates the ladder-shaped protrusion structure 16 set at the lower front of the cylindrical outer arc front and the flat fan-shaped flat direction of the rear end of the key 2 to leave the micro switch 7 at the bottom to close so that the interlock key simulator 1 can detect the state of the key after being pulled out. The interlock key simulator 1 reports the key pulling out action to the upper computer interlock logic module.

[0050] The present invention is described in detail above with reference to the accompanying drawings and embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. The contents not described in detail in the present invention can adopt the existing technology.

Claims

1. A simulation training device for electrical five-protection interlocking operation, characterized in that: The device comprises an interlocking key simulator (1), a simulated key (2), a simulated key detection module, a simulated key control module, and an interlocking logic module; A circular key insertion hole (4) is arranged below the bottom of the simulator housing (3) at the bottom of the interlocking key simulator (1), a raised key tooth guide groove (5) is arranged on the circular key insertion hole (4), and an annular cylindrical key earphone jack (6) is arranged in the middle of the circular key insertion hole (4); The front end of the simulated key (2) is a cylindrical structure, and a key columnar key tooth (15) is provided along the outer circumference of the cylindrical structure at the front end of the simulated key (2), and the key columnar key tooth (15) matches the key key tooth guide groove (5); a columnar key earphone plug (17) is provided in the middle of the cylindrical structure at the front end of the simulated key (2), and the key earphone plug (17) matches the key earphone jack (6); when the key earphone plug (17) contacts the key earphone jack (6), the key ID number is transmitted to the key earphone jack (6) through the key earphone plug (17); The simulated key detection module and the simulated key control module are arranged in the circular key insertion hole (4); the simulated key detection module is used to detect the insertion state or the rotation state of the simulated key (2); The simulated key control module is used to open or close the passage of the restricted key cylindrical key teeth (15); when the passage of the restricted key cylindrical key teeth (15) is opened, the simulated key (2) is allowed to rotate in the round key insertion hole (4); when the passage of the restricted key cylindrical key teeth (15) is closed, the simulated key (2) is prohibited from rotating in the round key insertion hole (4); The interlocking logic module is used to generate a simulated key control instruction according to the key ID number or the insertion state of the simulated key (2) or the rotation state of the simulated key (2), and control the simulated key control module to open or close the channel of the restricted key columnar key teeth (15).

2. The simulation training device for electrical five-protection interlocking operation according to claim 1 is characterized in that: The simulated key detection module comprises a micro switch (7) and a stepped protrusion structure (16); two micro switches (7) are arranged at intervals along the circumferential direction inside the circular key insertion hole (4); a stepped protrusion structure (16) is arranged along the outer circumference of the cylindrical structure at the front end of the simulated key (2), and the stepped protrusion structure (16) matches the micro switch (7); the micro switch (7) is pressed and opened by the stepped protrusion structure (16), and the insertion state or the rotation state of the simulated key (2) is detected.

3. The simulation training device for electrical five-protection interlocking operation according to claim 1 is characterized in that: The simulated key control module comprises a circular key jack base (13), a motor bracket (9), a DC screw reduction motor (8), a key rotation block (10), and a key rotation block arch structure (11); a circular key jack base (13) is arranged inside the circular key jack (4) below the bottom of the simulator housing (3); the circular key jack base (13) is provided with an arc-shaped limit step and a fixing hole for fixing the key sensor PCB board and the motor bracket (9); a DC screw reduction motor (8) is arranged on the motor bracket (9); a screw of the DC screw reduction motor (8) is connected to the key rotation block (10) through a screw hole of the key rotation block (10); The forward or reverse rotation of the screw reduction motor (8) can drive the key rotation block (10) to be lifted and lowered through the screw; the key rotation block arch structure (11) is connected to the key rotation block (10), and when the key rotation block (10) is lifted, the key rotation block arch structure (11) is lifted accordingly, and at this time, the passage for restricting the key columnar key teeth (15) is opened, allowing the simulated key (2) to rotate in the round key insertion hole (4); when the key rotation block (10) is lowered, the key rotation block arch structure (11) is lowered accordingly, and at this time, the passage for restricting the key columnar key teeth (15) is closed, prohibiting the simulated key (2) from rotating in the round key insertion hole (4).

4. The simulation training device for electrical five-protection interlocking operation according to claim 3 is characterized in that: The simulated key control module also includes a limit sensor (14), which is arranged on a key sensor PCB board and is used to sense the lifting and falling of the key rotation stopper (10).

5. The simulation training device for electrical five-protection interlocking operation according to claim 1 is characterized in that: The device also includes a marble (12) and a marble clamping point (18); the interior of the circular key insertion hole (4) is provided with a marble (12) along the circumferential direction; the front cylindrical structure of the simulated key (2) is provided with two hemispherical inwardly recessed marble clamping points (18) at intervals along the outer circumference, and the marble clamping points (18) match the marble (12); the marble (12) is sunken into the marble clamping point (18), indicating that the simulated key (2) is rotated into place in the circular key insertion hole (4).

6. The simulation training device for electrical five-protection interlocking operation according to claim 1 is characterized in that: The device also includes a simulated key tag (19), which is arranged on the simulated key (2) and is used to display information such as a key ID number and simulated key control instructions.

7. The simulation training device for electrical five-protection interlocking operation according to claim 6 is characterized in that: The simulated key tag (19) is provided with a communication cable (21). When the simulated key (2) is inserted into the round key socket (4), the key earphone plug (17) of the interlocking key simulator (1) supplies power to the simulated key tag (19) through the communication cable (21), and can update the display content on the simulated key tag (19) according to the simulated key control instruction generated by the interlocking logic module; after the simulated key (2) is pulled out, the content displayed on the simulated key tag (19) does not disappear.

8. The simulation training device for electrical five-protection interlocking operation according to claim 6 is characterized in that: The simulated key tag (19) is an electronic ink screen (20).

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