Air brake interlocking device with timing function
By introducing a timing function into the valve interlocking device of a nuclear power plant and using current sensors and comparators to record the interlocking action time of the valve, the problem of difficulty in determining the abnormal valve timing in the existing technology is solved, and the risk of radioactive contamination is reduced.
Patent Information
- Application Number
- CN202423003123.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-12-06
AI Technical Summary
The valve interlocking devices of existing nuclear power plants lack a timing function, making it difficult for maintenance personnel to determine the time sequence and duration of abnormal gas valves, increasing the risk of radioactive contamination.
An airlock interlock device with a timing function is designed. The interlocking action of the valve is recorded by a timer, and the induction current is generated by a guide coil and a metal rod. The timing record is realized by combining a current sensor, a comparator and a trigger pin.
It realizes the time recording of valve interlocking action, helps maintenance personnel to accurately locate abnormal gas valves, and reduces the risk of radioactive contamination.
Smart Images
Figure CN223318582U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nuclear power plant waste gas treatment systems, in particular to an airlock interlock device with a timing function. Background Art
[0002] In nuclear power systems, waste gas collected through the exhaust main pipe needs to be filtered before discharge. The waste gas generally includes radioactive waste gas and non-radioactive waste gas. Currently, there is a situation where the valve controlling radioactive waste gas is opened at the same time as the valve controlling non-radioactive waste gas is mistakenly opened, causing the radioactive waste gas to be output through the non-radioactive valve to a simple filtering pipeline for treatment and then discharged, which can easily lead to radioactive contamination.
[0003] Therefore, the prior art locking assembly and valve interlock mechanism for nuclear power plants, which has the publication number CN216053904U, has a locking assembly and valve interlock mechanism for a radioactive valve in a nuclear power plant. When the connecting rod is in the first position, the valve is closed and the connecting rod can lock the valve. At the same time, the lock can lock the connecting rod, i.e., the lock is in a locked state, and the key on the lock can be removed. When the connecting rod is in the second position, the valve is open and the connecting rod cannot lock the valve, allowing the valve to be opened and closed freely. At the same time, the connecting rod can prevent the lock from locking, i.e., the lock is in an unlocked state, and the key on the lock cannot be removed. By providing a locking assembly on each of the radioactive valve and the non-radioactive valve, and using the same key for the locking assemblies on the radioactive valve and the non-radioactive valve, the radioactive valve and the non-radioactive valve can be interlocked by the keys on the two locking assemblies. When the radioactive valve is opened, the key is locked to the locking assembly corresponding to the radioactive valve, and the key cannot be removed, i.e., the locking assembly corresponding to the non-radioactive valve cannot be opened by the key. This prevents the risk of the non-radioactive valve being accidentally opened while the radioactive valve is opened, thereby preventing the release of radioactive contamination.
[0004] The device uses interlocking structures such as locks and connecting rods to control the two valves from opening and closing at the same time. However, the interlocking structure lacks a timing function. When a problem occurs in the system, there is no timing record to show the time sequence and duration of the interlocking action. It is difficult for maintenance personnel to determine which valve has an abnormality and when. Utility Model Content
[0005] The utility model aims to solve the problems existing in the prior art and proposes an air brake interlocking device with a timing function.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an airlock interlock device with a timing function, comprising a base and two valves, the valve comprising a gate rod, a shell provided on the base, two timers provided on the outside of the shell, two guide coils provided in the shell, one of the guide coils provided close to one side of the shell, and the other guide coil provided close to the base, a threaded sleeve rotatably connected in the shell, a lock core slidably inserted in the threaded sleeve, and an interlocking plate connected to the outside of the threaded sleeve, the interlocking plates are respectively sleeved with the two gate rods, and metal rods for connecting with the guide coils are provided on both end faces of the interlocking plates, a switch is provided on the base, and contacts are provided at the bottom of the lock core, and the timer, guide coil, switch and contacts form a closed loop.
[0007] Preferably, the switch output end is electrically connected to the two guide coil input ends, the two guide coil output ends are electrically connected to the two timer input ends, the two guide coils and the timer are arranged in parallel, and the two timer output ends are electrically connected to the contacts.
[0008] Preferably, the timer includes a current sensor, a comparator and a trigger pin, the current sensor is used to convert the current signal into a voltage signal, the comparator is used to selectively convert the voltage signal into a digital signal, and the trigger pin is used to receive the digital signal.
[0009] Preferably, the base and the shell are both arranged through the gate rod, and metal hexagonal prisms are fixed on the two gate rods. The metal hexagonal prisms are equally divided into upper and lower parts with the middle part as the boundary. The upper half of the metal hexagonal prism at one gate rod is cut into a cylindrical shape, and the lower half of the metal hexagonal prism at the other gate rod is cut into a cylindrical shape. The interlocking plate is mounted on the two gate rods through the two metal hexagonal prisms.
[0010] Preferably, a plurality of limiting grooves are provided at the bottom of the threaded sleeve, and a through hole is provided at the bottom end surface. The plurality of limiting grooves are of equal height and are arranged circumferentially, and the contact contacts the switch through the through hole.
[0011] Preferably, a block that is slidably embedded in the side of the lock core and is engaged with several limit grooves, a spring rod is fixedly arranged between the block and the lock core, a spring is arranged between the bottom end of the lock core and the bottom surface of the threaded sleeve, and the spring is installed with the contact sleeve.
[0012] Compared with the prior art, the advantages and positive effects of the present invention are:
[0013] 1. In the utility model, a timer is provided for displaying and recording interlocking actions. A guide coil and a metal rod are provided. After the contact and the switch are in contact, the threaded sleeve rotates to drive the interlocking plate to slide. The interlocking plate drives the metal rod to slide and is inserted into the guide coil to generate an induced current. The induced current passes through the current sensor, the comparator and the trigger pin, so that the current is displayed and recorded on the timer.
[0014] 2. In the present invention, the interlocking plate slides relative to the metal hexagonal prism. When one end of the interlocking plate slides to the cylindrical part of one of the metal hexagonal prisms, the interlocking plate cannot limit the metal hexagonal prism in the cylindrical part. Therefore, the gate lever can be rotated to open, and the other end of the interlocking plate will be at the edge of the other metal hexagonal prism, continuing to limit the rotation of the metal hexagonal prism, so that this gate lever cannot be rotated to open. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model provides a three-dimensional structural diagram of an air brake interlock device with a timing function;
[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the threaded sleeve in the utility model;
[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the metal hexagonal prism in the present utility model;
[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the spring in the utility model.
[0019] Legend: 1. Base; 2. Lock cylinder; 3. Timer; 4. Gate lever; 5. Housing; 6. Metal hexagonal prism; 7. Threaded sleeve; 8. Guide coil; 9. Metal rod; 10. Switch; 11. Interlocking plate; 12. Limiting groove; 13. Block; 14. Spring rod; 15. Through hole; 16. Spring; 17. Contact. DETAILED DESCRIPTION
[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.
[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0022] like Figure 1-4As shown, an airlock interlock device with a timing function includes a base 1 and two valves, the valves include gate rods 4, a shell 5 is provided on the base 1, two timers 3 are provided on the outside of the shell 5, two guide coils 8 are provided in the shell 5, one guide coil 8 is provided close to one side of the shell 5, and the other guide coil 8 is provided close to the base 1, a threaded sleeve 7 is rotatably connected in the shell 5, a lock core 2 is slidably inserted in the threaded sleeve 7, and an interlocking plate 11 is connected to the outside of the threaded sleeve, the interlocking plate 11 is respectively sleeved with the two gate rods 4, and metal rods 9 for connecting with the guide coil 8 are provided on both end faces of the interlocking plate 11, a switch 10 is provided on the base 1, and a contact 17 is provided at the bottom of the lock core 2. The timer 3, the guide coil 8, the switch 10 and the contact 17 form a closed loop.
[0023] In this technical solution, a timer 3 is set to display and record the action of the interlocking device, and a guide coil 8 and a metal rod 9 are set. When the threaded sleeve 7 rotates to drive the interlocking plate 11 to slide, the interlocking plate 11 drives the metal rod 9 to slide. When the interlocking plate 11 slides in one direction, it can only drive one of the metal rods 9 to be inserted into the guide coil 8, generating an induced current. By setting a switch 10 and a contact 17, a person presses the lock core 2 downward to drive the contact 17 to contact the switch 10, thereby closing the entire circuit and energizing the guide coil 8.
[0024] The output end of the switch 10 is electrically connected to the input ends of the two guide coils 8, the output ends of the two guide coils 8 are electrically connected to the input ends of the two timers 3, the two guide coils 8 and the timers 3 are arranged in parallel, and the output ends of the two timers 3 are electrically connected to the contact 17. The timer 3 includes a current sensor, a comparator and a trigger pin. The current sensor is used to convert the current signal into a voltage signal, the comparator is used to selectively convert the voltage signal into a digital signal, and the trigger pin is used to receive the digital signal.
[0025] In the present technical solution, two guide coils 8 and two timers 3 are set. When the interlocking plate 11 drives one of the gate rods 4 to interlock and open, one of the metal rods 9 is inserted into one of the guide coils 8, so that one of the timers 3 records, which makes it convenient to distinguish which valve is interlocked and opened. In addition, the input end of the current sensor is electrically connected to the output end of the guide coil 8, the output end of the current sensor is electrically connected to the input end of the comparator, and the output end of the comparator is electrically connected to the trigger pin. Furthermore, by setting a reference voltage for the comparator, when the input voltage signal is higher than the reference voltage, the comparator will output a digital signal (i.e., a high level), which can be used as a trigger signal to control the opening and closing of the timer 3.
[0026] like Figure 3As shown, the base 1 and the shell 5 are both arranged through the gate rod 4. Metal hexagonal prisms 6 are fixed on the two gate rods 4. The metal hexagonal prisms 6 are equally divided into upper and lower parts with the middle as the boundary. The upper half of the metal hexagonal prism 6 at one gate rod 4 is cut into a cylindrical shape, and the lower half of the metal hexagonal prism 6 at the other gate rod 4 is cut into a cylindrical shape. The interlocking plate 11 is sleeved with the two gate rods 4 through the two metal hexagonal prisms 6.
[0027] In this technical solution, by setting a metal hexagonal prism 6, the interlocking plate 11 is arranged with the corner parts of the two metal hexagonal prisms 6 when it is in the initial position. At this time, both valves cannot be rotated to open. By inserting the key into the lock core 2 and turning the key to drive the lock core 2 to rotate, the threaded sleeve 7 is driven to rotate, causing the interlocking plate 11 to slide.
[0028] like Figure 4 As shown, a plurality of limiting grooves 12 are provided at the bottom of the threaded sleeve 7, and a through hole 15 is provided on the bottom end surface. The limiting grooves 12 are of equal height and are arranged circumferentially. The contact 17 contacts the switch 10 through the through hole 15. A block 13 that is engaged with the plurality of limiting grooves 12 is slidingly embedded in the side of the lock cylinder 2. A spring rod 14 is fixedly provided between the block 13 and the lock cylinder 2. A spring 16 is provided between the bottom end of the lock cylinder 2 and the inner bottom surface of the threaded sleeve 7. The spring 16 and the contact 17 are sleeved and installed.
[0029] In the present technical solution, by setting a limiting groove 12 and a block 13, the rotation of the lock core 2 drives the block 13 to rotate, and the rotation of the block 13 passes through the obstruction of the limiting groove 12, driving the threaded sleeve 7 to rotate. By setting a spring rod 14, before the lock core 2 is pressed, the block 13 is driven by the contraction of the spring rod 14 to be embedded in the lock core 2, and its top abuts against the inner side of the threaded sleeve 7. By setting a spring 16, after the lock core 2 is pressed, the reset force of the spring 16 drives the lock core 2 to rebound.
[0030] Working principle: Insert the key into the lock cylinder 2, and press the key downward to drive the contact 17 and the switch 10 to contact. The circuit is in a closed state, and drives the card block 13 to move to the limit groove 12, and the card block 13 is pushed out by the spring rod 14 and engaged with the limit groove 12. Turn the key to drive the threaded sleeve 7 to rotate, so that the interlocking plate 11 slides. When the interlocking plate 11 slides in one direction, it drives one of the metal rods 9 to be inserted into the guide coil 8, generating an induced current. The current signal is converted into a voltage signal through the current sensor, and the voltage signal is selectively converted into a digital signal through the comparator. After receiving the digital signal through the trigger pin, the record is displayed on the display screen of the timer 3.
[0031] It is worth noting that the timer 3 model can be specifically a JDM timer, the guide coil model can be specifically GE-KX01, the switch 10 model can be specifically a Siemens Haocai series, the contact 17 model can be specifically a plum blossom contact applicable specification, the comparator model can be specifically TLV3402IDR, and the current sensor model can be specifically APR200B420L.
[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.
Claims
1. An airlock interlock device with a timing function, comprising a base (1) and two valves, characterized in that: The valve includes a gate rod (4), a shell (5) is provided on the base (1), two timers (3) are provided on the outside of the shell (5), two guide coils (8) are provided in the shell (5), one guide coil (8) is provided close to one side of the shell (5), and the other guide coil (8) is provided close to the base (1), a threaded sleeve (7) is rotatably connected in the shell (5), a lock core (2) is slidably inserted in the threaded sleeve (7), and an interlocking plate (11) is connected to the outside of the threaded sleeve, and the interlocking plate (11) is respectively sleeved with the two gate rods (4), and the end faces of both ends of the interlocking plate (11) are provided with a metal rod (9) for inserting with the guide coil (8), a switch (10) is provided on the base (1), and a contact (17) is provided at the bottom of the lock core (2), and the timer (3), the guide coil (8), the switch (10) and the contact (17) form a closed circuit.
2. The air brake interlock device with timing function according to claim 1, characterized in that: The output end of the switch (10) is electrically connected to the input ends of the two current guide coils (8), the output ends of the two current guide coils (8) are electrically connected to the input ends of the two timers (3), the two current guide coils (8) and the timers (3) are arranged in parallel, and the output ends of the two timers (3) are electrically connected to the contact (17).
3. The air brake interlock device with timing function according to claim 1, characterized in that: The timer (3) comprises a current sensor, a comparator and a trigger pin, wherein the current sensor is used to convert a current signal into a voltage signal, the comparator is used to selectively convert the voltage signal into a digital signal, and the trigger pin is used to receive the digital signal.
4. The air brake interlock device with timing function according to claim 1, characterized in that: The base (1) and the housing (5) are both arranged to penetrate the gate rod (4); a metal hexagonal prism (6) is fixed on the two gate rods (4); the metal hexagonal prism (6) is equally divided into an upper part and a lower part with the middle part as the boundary; the upper half of the metal hexagonal prism (6) at one gate rod (4) is cut into a cylindrical shape, and the lower half of the metal hexagonal prism (6) at the other gate rod (4) is cut into a cylindrical shape; the interlocking plate (11) is sleeved with the two gate rods (4) through the two metal hexagonal prisms (6).
5. The air brake interlock device with timing function according to claim 1, characterized in that: The threaded sleeve (7) is provided with a plurality of limiting grooves (12) at the bottom and a through hole (15) at the bottom end surface. The plurality of limiting grooves (12) are of equal height and arranged circumferentially. The contact (17) contacts the switch (10) through the through hole (15).
6. The air brake interlock device with timing function according to claim 1, characterized in that: A block (13) is slidably embedded in the side of the lock core (2) and is engaged with a plurality of limit grooves (12). A spring rod (14) is fixedly arranged between the block (13) and the lock core (2). A spring (16) is arranged between the bottom end of the lock core (2) and the inner bottom surface of the threaded sleeve (7). The spring (16) is sleeved and installed with a contact (17).