Rapid connection self-locking device for nuclear power plant

Abstract

The utility model discloses a nuclear power plant quick connection self-locking device which comprises a fixing piece and a connecting piece detachably connected with the fixing piece, the fixing piece is provided with a connecting end face arranged close to the connecting piece and a free end face arranged far away from the connecting end face, and a plurality of guide grooves and a plurality of limiting grooves are formed in the fixing piece. Each guide groove is communicated with the limiting groove and the connecting end face, the connecting piece comprises a plurality of elastic buckling parts, and when the fixing piece is connected with the connecting piece, the buckling parts pass through the guide grooves and then abut against the limiting grooves, and the buckling parts can rotate by a preset angle in the limiting grooves. The rapid connection self-locking device for the nuclear power plant can guarantee the safety and reliability of on-site rapid connection operation, is easy to carry, can be conveniently and rapidly connected and used on site, is high in flexibility, does not occupy the space of on-site equipment, can be suitable for each system interface of the nuclear power plant, and reduces the industrial safety risk caused by manual connection and use of a hoop by personnel.

Description

Technical Field

[0001] The utility model relates to the field of connection and transportation in nuclear power plants, and particularly relates to a quick-connection self-locking device for nuclear power plants. Background Art

[0002] The chemical water system of nuclear power plants needs to use chemical materials, such as activated carbon and resins added and used in the instrument resin regeneration tank, resin external cleaning tank, activated carbon filter, anion / cation / mixed ion exchanger, condensate polishing pre-positive bed / high-speed mixed bed, and resin regeneration tower in the demineralized water production system; hydrochloric acid, sodium hydroxide, and ammonia water used in the demineralized water production system, hydrochloric acid, sodium hydroxide, ammonia water, and hydrazine used in the condensate polishing system, and sodium hypochlorite used in the circulating water treatment system.

[0003] These chemical materials need to be transported by using temporary hose connections during the loading, unloading, and transmission processes. Currently, there is no special chemical quick-connection device tool in the power station. For newly purchased materials, the loading and unloading work is usually manually installing the temporary hose and temporarily fixing it with a clamp. During the loading and unloading process, the clamp is relatively easy to loosen, resulting in easy leakage, environmental pollution, personnel burns, etc., and the industrial safety risk is extremely high. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a quick-connection self-locking device for nuclear power plants.

[0005] The technical solution adopted by the utility model to solve its technical problem is: constructing a quick-connection self-locking device for nuclear power plants, which includes a fixing member and a connecting member detachably connected to the fixing member;

[0006] The fixing member has a connection end face close to the connecting member and a free end face far from the connection end face. The fixing member is provided with a plurality of guiding grooves and a plurality of limiting grooves, and each guiding groove communicates with the limiting groove and the connection end face;

[0007] The limiting groove has a starting end face and a terminating end face. The starting end face is correspondingly arranged with the guiding groove. The starting end face extends along the circumferential direction of the fixing member to the terminating end face to form the limiting groove. The cross-sectional area of the limiting groove gradually increases along the direction from the starting end face to the terminating end face;

[0008] The connecting member includes a plurality of elastic buckling parts. When the fixing member is connected to the connecting member, the buckling parts pass through the guiding grooves and then abut against the limiting grooves, and the buckling parts can rotate a preset angle in the limiting grooves.

[0009] In some embodiments, the preset angle is 20°.

[0010] In some embodiments, the upper part of the starting end face is flush with the upper part of the guiding groove, and the upper part of the terminating end face is inclined with respect to the upper part of the guiding groove.

[0011] In some embodiments, the fixing member includes a first connecting section, a second connecting section, and a third connecting section that are sequentially connected in the direction from the connecting end face towards the free end face;

[0012] The guiding groove and the limiting groove are provided on the inner wall surface of the first connecting section. The inner diameter of the second connecting section is smaller than that of the first connecting section, and the inner diameter of the third connecting section is the same as that of the second connecting section.

[0013] In some embodiments, a plurality of mounting holes are provided on the third connecting section.

[0014] In some embodiments, the connecting member includes a first retaining section accommodated inside the first connecting section and a second retaining section connected to the first retaining section. The clamping portion is provided on the outer wall surface of the first retaining section, and the inner diameter of the second retaining section is smaller than that of the first retaining section.

[0015] In some embodiments, the clamping portion is inclined with respect to the outer wall surface of the first retaining section. The fixed end of the clamping portion is fixedly connected to the outer wall surface of the first retaining section, and the free end of the clamping portion is connected to the outer wall surface of the first retaining section through an elastic member.

[0016] In some embodiments, the quick-connect self-locking device for nuclear power plants further includes a sealing member, and the sealing member abuts against the axial end face inside the second connecting section.

[0017] In some embodiments, a stepped thread is provided inside the second retaining section.

[0018] In some embodiments, the number of the limiting grooves, guiding grooves, and clamping portions is three;

[0019] The three limiting grooves and the guiding grooves are evenly spaced along the circumferential direction of the fixing member;

[0020] The three clamping portions are evenly spaced along the circumferential direction of the connecting member.

[0021] Implementing the present utility model has the following beneficial effects: The quick-connect self-locking device for nuclear power plants can ensure the safety and reliability of on-site quick-connect operations, is easy to carry, convenient for on-site quick-connect use, has high flexibility, does not occupy the space of on-site equipment, can be applied to various system interfaces of nuclear power plants, and reduces the industrial safety risks brought by personnel manually connecting pipes using clamps. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solution of the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings. In the drawings:

[0023] Figure 1 is a cross-sectional view of the fixing member in some embodiments of the present utility model;

[0024] Figure 2 is a side view of the fixing member in some embodiments of the present utility model;

[0025] Figure 3 is a schematic diagram of the end face of the limiting groove in some embodiments of the present utility model;

[0026] Figure 4 is a cross-sectional view of the connecting member in some embodiments of the present utility model;

[0027] Figure 5 is a side view of the connecting member in some embodiments of the present utility model. Detailed implementation manners

[0028] In order to have a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific implementation manners of the present utility model will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings and are constructed and operated in a specific orientation. This is only for the convenience of describing the technical solution and does not indicate that the indicated device or element must have a specific orientation. Therefore, it should not be construed as a limitation of the present utility model.

[0029] It should also be noted that, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. When a component is referred to as being "on" or "under" another component, the component can be "directly" or "indirectly" located above the other component, or there may also be one or more intermediate components. Terms such as "first", "second", "third", etc. are only for the convenience of describing the present technical solution and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third", etc. can explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Please refer to Figures 1 to 5 , which is a quick-connect self-locking device for a nuclear power plant in some embodiments of the present utility model. It includes a fixing member 1 and a connecting member 2 detachably connected to the fixing member 1. The fixing member 1 has a connecting end face 11 disposed close to the connecting member 2 and a free end face 12 disposed away from the connecting end face 11. A plurality of guiding grooves 13 and a plurality of limiting grooves 14 are provided in the fixing member 1, and each guiding groove 13 communicates with the limiting groove 14 and the connecting end face 11. As Figure 1 and Figure 3 shown, the limiting groove 14 has a starting end face 141 and a terminating end face 142. The starting end face 141 is correspondingly disposed with the guiding groove 13. The starting end face 141 extends along the circumferential direction of the fixing member 1 to the terminating end face 142 to form the limiting groove 14. The cross-sectional area of the limiting groove 14 gradually increases in the direction from the starting end face 141 towards the terminating end face 142. As Figure 4 shown, the connecting member 2 includes a plurality of elastic snap portions 21. When the fixing member 1 is connected to the connecting member 2, the snap portions 21 pass through the guiding grooves 13 and then abut in the limiting grooves 14, and the snap portions 21 can rotate a preset angle in the limiting grooves 14.

[0031] Understandably, when the fixing member 1 needs to be connected to the connecting member 2, the buckle portion 21 can be aligned with the guiding groove 13. Under the guiding action of the guiding groove 13, the buckle portion 21 enters the limiting groove 14. The buckle portion 21 first enters the starting end face 141 of the limiting groove 14, and then the connecting member 2 is rotated, driving the buckle portion 21 to rotate towards the position of the terminating end face 142 at the same time. At this time, since the cross-sectional area of the limiting groove 14 gradually increases along the direction from the starting end face 141 to the terminating end face 142, and the buckle portion 21 has elasticity, the buckle portion 21 will gradually rebound from the compressed state under the action of the elastic force until it reaches the terminating end face 142. When the buckle portion 21 reaches the terminating end face 142, the free end of the buckle portion 21 will also abut against the inner wall surface of the limiting groove 14 at this time, thereby forming the locking of the fixing member 1 and the connecting member 2. When unlocking is required, only by rotating the buckle portion 21 along the direction from the terminating end face 142 to the starting end face 141 and then disengaging it through the guiding groove 13 can the unlocking be achieved. This quick-connection self-locking device for nuclear power plants can ensure the safety and reliability of on-site quick-connection operations, and is easy to carry. It can facilitate on-site quick-connection use, has high flexibility, does not occupy the space of on-site equipment, can be applied to various system interfaces of nuclear power plants, and reduces the industrial safety risks brought by personnel manually taking over pipes and using pipe clamps.

[0032] Wherein, in this embodiment, the number of the limiting grooves 14, the guiding grooves 13, and the buckle portions 21 is three. The three limiting grooves 14 and the guiding grooves 13 are evenly spaced and arranged along the circumferential direction of the fixing member 1, and the three buckle portions 21 are evenly spaced along the circumferential direction of the connecting member 2. In some other embodiments, the number of the limiting grooves 14, the guiding grooves 13, and the buckle portions 21 can be adjusted according to actual situations.

[0033] In addition, in this embodiment, the preset angle is 20°. The rotation direction of the buckle portion 21 in the limiting groove 14 is the clockwise direction, which is defined relative to the direction from the connecting end face 11 towards the free end face 12. That is, after the connecting member 2 is horizontally moved and inserted into the fixing member 1 and then rotated clockwise by 20°, the locking of the fixing member 1 and the connecting member 2 can be completed. In some other embodiments, the preset angle can be set according to actual situations and will not be specifically limited here.

[0034] As Figure 1 shown, the upper part of the starting end face 141 is flush with the upper part of the guiding groove 13. As Figure 3 shown, the upper part of the terminating end face 142 is inclined with the upper part of the guiding groove 13. When the buckle portion 21 reaches the terminating end face 142, the free end of the buckle portion 21 abuts against the inner wall surface of the limiting groove 14 at this time. And because the upper part of the terminating end face 142 is inclined with the upper part of the guiding groove 13, the buckle portion 21 cannot move along the axial direction of the fixing member 1.

[0035] Further, the fixing member 1 includes a first connecting segment 15, a second connecting segment 16, and a third connecting segment 17 that are sequentially connected in the direction from the connecting end face 11 towards the free end face 12. The first connecting segment 15, the second connecting segment 16, and the third connecting segment 17 are integrally formed, or the first connecting segment 15, the second connecting segment 16, and the third connecting segment 17 are connected by welding. Additionally, the guiding groove 13 and the limiting groove 14 are provided on the inner wall surface of the first connecting segment 15. The inner diameter of the second connecting segment 16 is smaller than that of the first connecting segment 15, and the inner diameter of the third connecting segment 17 is the same as that of the second connecting segment 16. A plurality of mounting holes 171 are provided on the third connecting segment 17. The third connecting segment 17 is equivalent to the flange of the fixing member 1. The mounting holes 171 can be bolt holes, and the fixing member 1 can be fixedly installed with the on-site system interface of the nuclear power plant through the bolt holes.

[0036] The quick-connect self-locking device of the nuclear power plant further includes a sealing member 3, and the sealing member 3 abuts against the axial end face inside the second connecting segment 16. The sealing member 3 can be a sealing gasket. After the connecting member 2 and the fixing member 1 are locked, the sealing function between the connecting member 2 and the fixing member 1 is realized through the setting of this sealing member 3.

[0037] As Figure 4 shown, the connecting member 2 includes a first retaining segment 22 accommodated inside the first connecting segment 15 and a second retaining segment 23 connected to the first retaining segment 22. The clamping portion 21 is provided on the outer wall surface of the first retaining segment 22. The inner diameter of the second retaining segment 23 is smaller than that of the first retaining segment 22. The outer diameter of the first retaining segment 22 can be the same as the inner diameter of the first connecting segment 15, and the clamping portion 21 is arranged obliquely to the outer wall surface of the first retaining segment 22. The fixed end of the clamping portion 21 is fixedly connected to the outer wall surface of the first retaining segment 22, and the free end of the clamping portion 21 is connected to the outer wall surface of the first retaining segment 22 through an elastic member 24. The elastic member 24 is preferably a spring, and the elastic member 24 provides elastic force for the clamping portion 21.

[0038] In addition, a stepped thread 231 is provided inside the second retaining segment 23, and the stepped thread 231 can be used for connection and matching with the transmission hose.

[0039] Generally speaking, the quick-connect self-locking device of this nuclear power plant utilizes the mutual locking of the fixing part 1 and the connecting part 2, which can realize the addition and use of activated carbon and resin in the instrument resin regeneration tank, resin external cleaning tank, activated carbon filter, anion / cation / mixed ion exchanger, condensate polishing prefrontal cation bed / high-speed mixed bed, and resin regeneration tower in the newly purchased demineralized water production system; hydrochloric acid, sodium hydroxide, and ammonia water used in the demineralized water production system, hydrochloric acid, sodium hydroxide, ammonia water, and hydrazine used in the condensate polishing system, and sodium hypochlorite and other chemical materials used in the circulating water treatment system are quickly, safely, and firmly connected and transmitted. That is, it can solve the technical problems of leakage, environmental pollution, and the risk of personnel burns caused by manually installing temporary hoses and temporarily fixing them with clamps, and can also solve the technical problem of difficult installation and matching connection of the transfer pipeline for resin transfer and addition work in the demineralized bed. The device is light, simple, practical, and easy to carry, and can be taken at any time as needed. Different sizes and materials of quick-connect devices can be set according to the characteristics of different-sized container interfaces and materials to avoid new pollution caused by the reaction between the materials and the quick-connect devices. At the same time, this device is for special use only to avoid cross-contamination of materials.

[0040] It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A quick-connect self-locking device for a nuclear power plant, characterized in that: It comprises a fixing member (1) and a connecting member (2) detachably connected to the fixing member (1); The fixing member (1) comprises a connecting end face (11) arranged close to the connecting member (2) and a free end face (12) arranged away from the connecting end face (11); a plurality of guide grooves (13) and a plurality of limit grooves (14) are arranged in the fixing member (1); each of the guide grooves (13) is connected to the limit groove (14) and the connecting end face (11); The limiting groove (14) has a starting end face (141) and a terminating end face (142); the starting end face (141) is arranged corresponding to the guide groove (13); the starting end face (141) extends along the circumferential direction of the fixing member (1) to the terminating end face (142) to form the limiting groove (14); and the cross-sectional area of ​​the limiting groove (14) gradually increases along the direction from the starting end face (141) to the terminating end face (142); The connecting member (2) comprises a plurality of elastic buckle parts (21); when the fixing member (1) is connected to the connecting member (2), the buckle parts (21) pass through the guide groove (13) and abut against the limiting groove (14); the buckle parts (21) can rotate within the limiting groove (14) to a preset angle.

2. The nuclear power plant quick connection self-locking device according to claim 1, characterized in that: The preset angle is 20°.

3. The nuclear power plant quick connection self-locking device according to claim 1, characterized in that: The upper portion of the starting end surface (141) is arranged flush with the upper portion of the guide groove (13), and the upper portion of the terminating end surface (142) is arranged obliquely with the upper portion of the guide groove (13).

4. The nuclear power plant quick connection self-locking device according to claim 1, characterized in that: The fixing member (1) comprises a first connecting section (15), a second connecting section (16) and a third connecting section (17) which are sequentially connected along the connecting end surface (11) toward the free end surface (12); The guide groove (13) and the limiting groove (14) are arranged on the inner wall surface of the first connecting section (15); the inner diameter of the second connecting section (16) is smaller than the inner diameter of the first connecting section (15); and the inner diameter of the third connecting section (17) is consistent with the inner diameter of the second connecting section (16).

5. The nuclear power plant quick connection self-locking device according to claim 4, characterized in that: The third connecting section (17) is provided with a plurality of mounting holes (171).

6. The nuclear power plant quick connection self-locking device according to claim 4, characterized in that: The connecting member (2) comprises a first retaining section (22) accommodated inside the first connecting section (15) and a second retaining section (23) connected to the first retaining section (22); the buckle portion (21) is arranged on the outer wall surface of the first retaining section (22); and the inner diameter of the second retaining section (23) is smaller than the inner diameter of the first retaining section (22).

7. The nuclear power plant quick connection self-locking device according to claim 6, characterized in that: The buckle portion (21) is arranged obliquely to the outer wall surface of the first fixing section (22); the fixed end of the buckle portion (21) is fixedly connected to the outer wall surface of the first fixing section (22); and the free end of the buckle portion (21) is connected to the outer wall surface of the first fixing section (22) via an elastic member (24).

8. The nuclear power plant quick connection self-locking device according to claim 6, characterized in that: The nuclear power plant quick connection self-locking device also includes a sealing component (3), and the sealing component (3) abuts against the axial end surface inside the second connecting section (16).

9. The nuclear power plant quick connection self-locking device according to claim 6, characterized in that: The second retaining section (23) is provided with a reducing thread (231) inside.

10. The nuclear power plant quick connection self-locking device according to claim 1, characterized in that: The number of the limiting groove (14), the guiding groove (13), and the buckle portion (21) are all three; The three limiting grooves (14) and the guide groove (13) are evenly spaced and arranged along the circumferential direction of the fixing member (1); The three buckle portions (21) are evenly spaced apart along the circumferential direction of the connecting member (2).

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