Buckle type connector for nuclear power station monitoring equipment

Abstract

The utility model relates to a buckle type connector for nuclear power station monitoring equipment, which comprises a socket and a plug, a plugging cavity is arranged in the socket, the plugging cavity is provided with an opening at one end of the socket, the other end of the socket is fixedly provided with a pin, and the inner wall of the plugging cavity is provided with a lock catch groove; the plug comprises a plug shell, a buckle and a plug inner core, the plug shell is slidably connected to the periphery of the plug inner core in a sleeving mode, a gap is formed between the plug inner core and the plug shell, the buckle is fixed in the gap, one end of the buckle is provided with a buckle boss protruding towards the plug shell, and a lock catch hole is formed in the position, corresponding to the buckle boss, of the plug shell. When the head of the plug is inserted into the socket, the buckle boss passes through the lock catch hole and abuts against the inner wall of the lock catch groove. Or when the plug shell moves towards the tail relative to the plug inner core, the buckling boss is close to the plug inner core and is separated from the inner wall of the locking groove under the extrusion of the edge of the locking hole. The plug and the socket of the connector can be quickly plugged and unplugged.

Description

Technical Field

[0001] This application relates to the field of connector technology, and in particular to a snap-fit ​​connector for nuclear power plant monitoring equipment. Background Technology

[0002] As a critical interconnecting component in the electrical system of a nuclear power plant, nuclear power connectors face stringent safety and reliability requirements due to the unique nature of the nuclear environment. These requirements include not only strict radiation protection but also the need to prevent the leakage of radioactive materials. During scheduled reactor shutdowns for maintenance, connectors require quick-connect and disconnection capabilities to improve maintenance efficiency, particularly for non-critical equipment such as peripheral monitoring sensors.

[0003] However, the connection schemes commonly used in nuclear power plants still have significant limitations. Most connectors used in nuclear power plants still use a method of directly welding pins to wires for fixing. This traditional design requires cutting the welding point during maintenance, which is complex and irreversible. Some improved connectors in nuclear power plants use threaded or limiting post fixing methods. Although this fixing method simplifies the disassembly and assembly process to some extent, it still cannot meet the needs of rapid insertion and removal. Utility Model Content

[0004] To address the problems mentioned above and meet the need for quick insertion and removal of nuclear power plant connectors, this application provides a snap-fit ​​connector for nuclear power plant monitoring equipment.

[0005] The technical solution of this application is as follows:

[0006] A snap-fit ​​connector for nuclear power plant monitoring equipment, comprising:

[0007] The socket has an internal insertion cavity with an opening at one end and a pin fixed at the other end. The inner wall of the insertion cavity is provided with a locking groove.

[0008] A plug having a head and a tail, the plug including a plug housing, a snap fastener, and a plug core, the plug housing being slidably fitted onto the outer periphery of the plug core, a gap being present between the plug core and the plug housing, the snap fastener being fixed in the gap, and one end of the snap fastener having a snap fastener protrusion protruding towards the plug housing, the plug housing having a locking hole corresponding to the snap fastener protrusion, such that when the head of the plug is inserted into the socket, the snap fastener protrusion passes through the locking hole and abuts against the inner wall of the locking groove; or when the plug housing moves relative to the plug core towards the tail, the snap fastener protrusion, under the pressure of the edge of the locking hole, approaches the plug core and disengages from the inner wall of the locking groove.

[0009] Preferably, the buckle is a hollow cylinder that fits onto the outer periphery of the plug core. The hollow cylinder has a plurality of buckle strips spaced apart around its circumference. Each buckle strip has a notch on both sides that extends along the axial direction of the hollow cylinder. The buckle protrusion is located at the end of the buckle strip closest to the head.

[0010] Preferably, the inner core of the plug has a head limiting protrusion at one end near the head and a tail limiting protrusion at one end near the tail, and the buckle is located between the head limiting protrusion and the tail limiting protrusion.

[0011] Preferably, the outer wall of the plug core near the tail end is threaded, and the tail limiting boss is fixed to the plug core by the thread.

[0012] Preferably, the outer wall of the plug core is provided with a snap-fit ​​groove, the snap-fit ​​is embedded in the snap-fit ​​groove, there is a gap between the end of the snap-fit ​​near the head and the snap-fit ​​groove, and the end of the snap-fit ​​near the tail abuts against the snap-fit ​​groove.

[0013] Preferably, the surface of the buckle protrusion that is pressed by the edge of the buckle hole is a slope or an arc surface.

[0014] Preferably, the plug core has a head protrusion at one end near the head and a tail protrusion at one end near the tail. The plug housing is located between the head protrusion and the tail protrusion. When the plug is inserted into the socket, the end face of the plug housing near the head abuts against the head protrusion. When the plug is pulled out of the socket, the end face of the plug housing near the tail abuts against the tail protrusion.

[0015] Preferably, the plug is further provided with a positioning pin, the plug housing is provided with a positioning pin groove, and one end of the positioning pin is threaded into the positioning pin groove; the socket is provided with a guide opening facing the tail at the position corresponding to the positioning pin, and when the plug is inserted into the socket, the other end of the positioning pin enters the guide opening.

[0016] Preferably, the width of the guide opening gradually decreases along the direction from the tail to the head.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] When the plug is inserted into the socket, the plug housing slides in along the insertion cavity, and the locking protrusion passes through the locking hole on the plug housing. When the plug and socket are engaged, the locking protrusion abuts against the inner wall of the locking groove on the socket, thereby achieving quick engagement of the plug and socket. The locking protrusion also prevents the plug from detaching from the socket due to accidental unplugging of the plug cable. When the plug is pulled out of the socket, as the plug housing slides out along the insertion cavity, the locking protrusion is pressed against the inner core of the plug by the edge of the locking hole and disengages from the inner wall of the locking groove. Subsequently, there is no mechanical interference or residual resistance between the plug and the socket, thereby achieving quick separation of the plug and the socket.

[0019] By setting head protrusions and tail protrusions in the inner core of the plug, the plug shell can slide and push against the two protrusions. This technical solution can achieve quick plugging and unplugging of the connector plug and socket simply by changing the direction of the force applied to the plug shell.

[0020] 3. When the plug is pulled out of the socket, the edge of the locking hole will slide along the inclined or curved surface of the locking protrusion, generating an inward force. This force will push the locking protrusion to retract towards the inner core of the plug, so that the locking protrusion can smoothly disengage from the locking groove of the socket, thereby achieving the effect of quick separation of the plug and the socket. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the connector in this application.

[0022] Figure 2 This is a schematic diagram of the structure when the connector plug and socket of this application are mated.

[0023] Figure 3 This is a structural diagram illustrating the process of separating the connector plug and socket in this application.

[0024] Figure 4 This is a schematic diagram of the connector clip structure of this application.

[0025] Explanation of reference numerals in the attached diagram: 1. Socket; 11. Pin; 12. Locking slot; 13. Guide opening; 2. Plug; 21. Plug housing; 211. Locking hole; 212. Positioning pin slot; 22. Snap fastener; 221. Snap fastener boss; 222. Snap fastener strip; 23. Plug inner core; 231. Head limiting boss; 232. Tail limiting boss; 233. Head protrusion; 234. Tail protrusion; 3. Positioning pin. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. It should be understood that this application is not limited to the exemplary embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] This utility model provides an appendix. Figures 1-4 In this embodiment of the present invention, a snap-fit ​​connector for nuclear power plant monitoring equipment includes:

[0031] The socket 1 has a plug cavity inside, the plug cavity has an opening at one end of the socket 1, and a pin 11 is fixed at the other end of the socket 1. The inner wall of the plug cavity is provided with a locking groove 12.

[0032] The plug 2 has a head and a tail. The plug 2 includes a plug housing 21, a snap fastener 22, and a plug core 23. The plug housing 21 is slidably fitted onto the outer periphery of the plug core 23. There is a gap between the plug core 23 and the plug housing 21. The snap fastener 22 is fixed in the gap, and one end of the snap fastener 22 is provided with a snap fastener boss 221 protruding towards the plug housing 21. The plug housing 21 is provided with a locking hole 211 at the position corresponding to the snap fastener boss 221, so that when the head of the plug 2 is inserted into the socket 1, the snap fastener boss 221 passes through the locking hole 211 and abuts against the inner wall of the locking groove 12; or when the plug housing 21 moves relative to the plug core 23 towards the tail, the snap fastener boss 221 approaches the plug core 23 and disengages from the inner wall of the locking groove 12 under the pressure of the edge of the locking hole 211.

[0033] Reference Figure 1 and Figure 2 The plug 2 has a head and a tail, including a plug housing 21, a buckle 22, and a plug core 23. The plug housing 21 is slidably fitted onto the outer periphery of the plug core 23. There is a gap between the plug core 23 and the plug housing 21. The buckle 22 can be made of plastic and is fixed in the gap. One end of the buckle 22 is provided with a buckle boss 221 protruding towards the plug housing 21. The plug housing 21 is provided with a locking hole 211 at the position corresponding to the buckle boss 221.

[0034] Reference Figure 1 and Figure 2 The socket 1 has a socket cavity inside, with an opening at one end of the socket 1 and a locking groove 12 on the inner wall of the socket cavity. The other end of the socket 1 is fixed with a pin 11. The pin 11 is fixed to the socket 1 by glass sintering. The high strength bonding and vibration and impact resistance of the glass sintering process ensure a stable and reliable connection. In addition, due to the special properties of glass material, the low leakage rate and corrosion resistance of the glass sintering process can also more effectively prevent the leakage of radioactive materials.

[0035] In specific implementation, refer to Figure 2 When the head of plug 2 is inserted into socket 1, that is, when plug 2 and socket 1 are engaged, the latching protrusion 221 passes through the locking hole 211, and one side wall of the latching protrusion 221 abuts against the inner wall of the locking groove 12 and one side wall of the locking hole 211. The plug 2 and socket 1 are quickly engaged by sliding the plug housing 21. After the plug 2 and socket 1 are engaged, when the applied force is not on the plug housing 21 or there is no component force applied to the plug housing 21 away from the socket 1, because the latching protrusion 221 abuts against the inner wall of the locking groove 12, the plug 2 and socket 1 will not be disengaged from the socket 1 due to accidental unplugging of the plug 2 coil.

[0036] In specific implementation, refer to Figure 3 When the plug 2 is pulled out of the socket 1, a force away from the socket 1 needs to be applied to the plug housing 21, that is, the plug housing 21 moves towards the tail relative to the plug core 23. At this time, since the latch 22 can undergo a certain degree of deformation, the latch protrusion 221 approaches the plug core 23 and disengages from the inner wall of the latch groove 12 under the pressure of the side wall edge of the latch hole 211. That is, the latch 22 is unlocked. Subsequently, there is no mechanical interference or residual resistance between the plug 2 and the socket 1, thereby realizing the rapid separation of the plug 2 and the socket 1.

[0037] By adopting the above technical solution, when the plug 2 is inserted into the socket 1, the plug housing 21 slides in along the insertion cavity, and the latching protrusion 221 passes through the locking hole 211 on the plug housing 21. When the plug 2 and the socket 1 are in place, the latching protrusion 221 abuts against the inner wall of the locking groove 12 on the socket 1, thereby achieving quick engagement of the plug 2 and the socket 1. The latching protrusion 221 can prevent the plug 2 from detaching from the socket 1 due to accidental unplugging of the plug 2 cable. When the plug 2 is pulled out of the socket 1, as the plug housing 21 slides out along the insertion cavity, the latching protrusion 221 approaches the plug core 23 under the pressure of the edge of the locking hole 211 and disengages from the inner wall of the locking groove 12. Subsequently, there is no mechanical interference or residual resistance between the plug 2 and the socket 1, thereby achieving quick separation of the plug 2 and the socket 1.

[0038] The buckle 22 is a hollow cylinder that fits around the outer periphery of the plug core 23. The hollow cylinder has several buckle strips 222 spaced apart around its circumference. Each buckle strip 222 has a notch on both sides that extends along the axial direction of the hollow cylinder. The buckle protrusion 221 is located at the end of the buckle strip 222 near the head.

[0039] Reference Figure 2 and Figure 4 The latch 22 is a hollow cylinder that fits around the outer periphery of the plug inner core 23. Several integrally formed and spaced latch strips 222 are provided around the circumference of the hollow cylinder. Each latch strip 222 has notches extending axially along both sides. A latch boss 221 is located at the end of the latch strip 222 near the head. When subjected to radial pressure along the hollow cylinder, the latch boss 221 deforms to a certain extent, causing it to move closer to the plug inner core 23. The hollow cylinder shape of the latch 22 results in more even force distribution under the pressure of the locking hole 211, and the notches on both sides of the latch strip 222 facilitate deformation.

[0040] By adopting the above technical solution, the buckle 22 is a hollow cylinder that fits around the outer periphery of the plug inner core 23. The buckle strips 222 are evenly distributed on the hollow cylinder. The buckle 22 will be subjected to more even force under the pressure of the locking hole 211 edge. At the same time, the notches on both sides of the buckle strips 222 are more conducive to the deformation of the buckle strips 222. In this embodiment, the buckle 22 adopts a hollow cylinder structure, which simplifies the assembly and disassembly of the connector plug 2 itself while achieving quick insertion and connection between the connector plug 2 and the socket 1.

[0041] In other embodiments, if it is necessary to reduce the layout space of the connector, another structure can also be considered. The specific embodiment is as follows: the outer wall of the plug inner core 23 is provided with a snap-fit ​​groove, the snap-fit ​​22 is embedded in the snap-fit ​​groove, the end of the snap-fit ​​22 near the head has a gap with the snap-fit ​​groove, and the end of the snap-fit ​​22 near the tail abuts against the snap-fit ​​groove.

[0042] A latching groove is provided on the outer wall of the plug inner core 23. The latch 22 is a column with a latching protrusion 221, that is, its shape is... Figure 2 and Figure 3 The buckle strip 222 shown directly embeds the buckle 22 into the buckle groove on the outer wall of the plug inner core 23. The buckle groove has a gap sufficient to allow the buckle 22 to deform, so that the plug shell 21 can directly and tightly fit with the plug inner core 23, thereby reducing the layout space of the connector.

[0043] The plug inner core 23 has a head limiting protrusion 231 at one end near the head and a tail limiting protrusion 232 at one end near the tail. The buckle 22 is located between the head limiting protrusion 231 and the tail limiting protrusion 232.

[0044] Reference Figure 2 The plug core 23 has a head limiting protrusion 231 at one end near the head and a tail limiting protrusion 232 at one end near the tail. The head limiting protrusion 231 and the tail limiting protrusion 232 limit the axial movement distance of the buckle 22 while leaving a certain axial gap for the buckle 22 to deform. This allows the buckle protrusion 221 to pop into the locking groove 12 more quickly and accurately during the insertion process.

[0045] The plug inner core 23 has a thread on the outer wall near the tail end, and the tail limiting boss 232 is fixed to the plug inner core 23 by the thread.

[0046] Reference Figure 2 The inner wall of the plug core 23 near the tail end is threaded, and the tail limiting boss 232 is fixed to the inner wall of the plug core 23 by the thread.

[0047] By adopting the above technical solution, the tail limiting boss 232 is fixed to the plug inner core 23 by threads, and the position of the tail limiting boss 232 can be adjusted at any time. It is also convenient to remove the buckle 22 from the plug inner core 23, thereby better controlling the axial reserved gap of the buckle 22.

[0048] In addition, the tail limiting boss 232 can also be a protrusion directly set on the inner core 23 of the plug, and its setting method is the same as... Figure 2 The head limiting boss 231 is similar, that is, the tail limiting boss 232 is a protrusion integrally formed on the surface of the plug inner core 23, which will not be described in detail here.

[0049] The surface of the buckle protrusion 221 that is pressed by the edge of the buckle hole 211 is a slope or an arc surface.

[0050] Reference Figure 2 The side surface of the latching boss 221 that contacts and is pressed against the edge of the locking hole 211 is set as a bevel or an arc surface. When the plug 2 is pulled out of the socket 1, the plug shell 21 moves towards the tail relative to the plug core 23. The edge of the locking hole 211 on the plug shell 21 slides along the bevel or arc surface of the latching boss 221, generating an inward component force. This component force pushes the latching boss 221 to contract towards the plug core 23, thereby causing the latching boss 221 to smoothly disengage from the locking groove 12 of the socket 1, thus achieving the effect of quick separation of the plug 2 and the socket 1.

[0051] The plug core 23 has a head protrusion 233 at one end near the head and a tail protrusion 234 at one end near the tail. The plug housing 21 is located between the head protrusion 233 and the tail protrusion 234. When the plug 2 is inserted into the socket 1, the end face of the plug housing 21 near the head abuts against the head protrusion 233. When the plug 2 is pulled out of the socket 1, the end face of the plug housing 21 near the tail abuts against the tail protrusion 234.

[0052] Reference Figure 2 and Figure 3 The plug core 23 has a head protrusion 233 at one end near the head and a tail protrusion 234 at one end near the tail. The plug housing 21 is located between the head protrusion 233 and the tail protrusion 234. When the plug 2 is inserted into the socket 1, the force applied to the plug housing 21 causes the end face near the head to abut against the head protrusion 233, pushing the plug 2 into the socket 1; when the plug 2 is pulled out of the socket 1, the force applied to the plug housing 21 causes the end face at the tail to abut against the tail protrusion 234, pushing the plug 2 away from the socket 1.

[0053] It should be noted that the head protrusion 233 and the head limiting protrusion 231 introduced earlier are both protrusions integrally formed on the surface of the plug core 23, and the two constitute a stepped structure.

[0054] By adopting the above technical solution, the head protrusion 233 and the tail protrusion 234 limit the sliding range of the plug housing 21, preventing accidental complete removal of the plug housing 21 from the plug core 23. Furthermore, given the special nature of the radiation environment in nuclear power plants, manual maintenance should be minimized during repairs. The snap-fit ​​connector for nuclear power plant monitoring equipment proposed in this application allows for rapid insertion and removal of the connector plug 2 and socket 1 by changing the direction of the force applied to the plug housing 21 using a robotic arm, eliminating the need for personnel to work in radiation-prone areas.

[0055] The plug 2 is also provided with a positioning pin 3, and the plug housing 21 is provided with a positioning pin groove 212. One end of the positioning pin 3 is threaded into the positioning pin groove 212.

[0056] The socket 1 has a guide opening 13 facing the tail at the position corresponding to the positioning pin 3. When the plug 2 is inserted into the socket 1, the other end of the positioning pin 3 enters the guide opening 13.

[0057] Reference Figure 1 and Figure 2 The plug housing 21 is also provided with a positioning pin groove 212. One end of the positioning pin 3 is threaded into the positioning pin groove 212. The socket 1 is provided with a guide opening 13 facing the tail at the position corresponding to the positioning pin 3. During the process of the plug 2 being inserted into the socket 1, the positioning pin 3 is restricted to move within the guide opening 13, which can prevent the plug 2 and the socket 1 from rotating relative to each other in the radial direction, thereby playing a role in radial positioning. In addition, when the plug 2 is connected to the socket 1, the positioning pin 3 is restricted to the inside of the guide opening 13, that is, the guide opening 13 is close to the socket 1, preventing the plug 2 from rotating axially, thereby protecting the connector.

[0058] The two opposite end faces of the guide port 13 can be parallel to each other, or they can be concave or convex curved surfaces.

[0059] To expedite the rapid engagement of the plug 2 and the socket 1, the two opposite end faces of the guide opening 13 can be widened arc surfaces or slopes from the inside out. A specific embodiment is as follows: the width of the guide opening 13 gradually decreases along the direction from the tail to the head.

[0060] In this embodiment, refer to Figure 1The guide opening 13 widens from the inside out. When the plug 2 is quickly inserted into the socket 1, if the movement trajectory of the plug 2 deviates, the positioning pin 3 can slide inward along the inner wall of the guide opening 13, thereby correcting the movement trajectory of the plug 2 and thus assisting the plug 2 and the socket 1 to achieve quick engagement.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A snap-fit ​​connector for monitoring equipment in nuclear power plants, characterized in that, include: The socket (1) has a plug cavity inside, the plug cavity has an opening at one end of the socket (1), and a pin (11) is fixed at the other end of the socket (1). The inner wall of the plug cavity is provided with a locking groove (12). A plug (2) having a head and a tail, the plug (2) including a plug housing (21), a snap fastener (22), and a plug inner core (23), the plug housing (21) being slidably fitted onto the outer periphery of the plug inner core (23), a gap being present between the plug inner core (23) and the plug housing (21), the snap fastener (22) being fixed in the gap, and one end of the snap fastener (22) having a snap fastener boss (221) protruding toward the plug housing (21), the plug housing (21)... A locking hole (211) is provided at the position corresponding to the locking protrusion (221) so that when the head of the plug (2) is inserted into the socket (1), the locking protrusion (221) passes through the locking hole (211) and abuts against the inner wall of the locking groove (12); or when the plug shell (21) moves towards the tail relative to the plug core (23), the locking protrusion (221) approaches the plug core (23) and disengages from the inner wall of the locking groove (12) under the pressure of the edge of the locking hole (211).

2. A snap-fit ​​connector for nuclear power plant monitoring equipment according to claim 1, characterized in that: The buckle (22) is a hollow cylinder that fits around the outer periphery of the plug core (23). The hollow cylinder has several buckle strips (222) spaced apart around its periphery. Each buckle strip (222) has notches extending along the axial direction of the hollow cylinder on both sides. The buckle boss (221) is located at the end of the buckle strip (222) near the head.

3. A snap-fit ​​connector for nuclear power plant monitoring equipment according to claim 2, characterized in that: The plug core (23) has a head limiting boss (231) at one end near the head and a tail limiting boss (232) at one end near the tail. The buckle (22) is located between the head limiting boss (231) and the tail limiting boss (232).

4. A snap-fit ​​connector for nuclear power plant monitoring equipment according to claim 3, characterized in that: The plug core (23) has a thread on the outer wall near the tail end, and the tail limiting boss (232) is fixed to the plug core (23) by the thread.

5. A snap-fit ​​connector for nuclear power plant monitoring equipment according to claim 1, characterized in that: The outer wall of the plug core (23) is provided with a buckle groove, the buckle (22) is embedded in the buckle groove, there is a gap between the end of the buckle (22) near the head and the buckle groove, and the end of the buckle (22) near the tail abuts against the buckle groove.

6. A snap-fit ​​connector for nuclear power plant monitoring equipment according to any one of claims 1-5, characterized in that: The surface of the buckle protrusion (221) that is pressed by the edge of the buckle hole (211) is a slope or an arc surface.

7. A snap-fit ​​connector for nuclear power plant monitoring equipment according to claim 1, characterized in that: The plug core (23) has a head protrusion at one end near the head and a tail protrusion at one end near the tail. The plug housing (21) is located between the head protrusion and the tail protrusion. When the plug (2) is inserted into the socket (1), the end face of the plug housing (21) near the head abuts against the head protrusion. When the plug (2) is pulled out of the socket (1), the end face of the plug housing (21) near the tail abuts against the tail protrusion.

8. A snap-fit ​​connector for nuclear power plant monitoring equipment according to claim 1, characterized in that: The plug (2) is also provided with a positioning pin (3), and the plug housing (21) is provided with a positioning pin groove (212). One end of the positioning pin (3) is threaded into the positioning pin groove (212). The socket (1) has a guide opening (13) facing the tail at the position corresponding to the positioning pin (3). When the plug (2) is inserted into the socket (1), the other end of the positioning pin (3) enters the guide opening (13).

9. A snap-fit ​​connector for nuclear power plant monitoring equipment according to claim 8, characterized in that: The width of the guide opening (13) gradually decreases along the direction from the tail to the head.

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