Detection limiting adjustment device for metal hose of nuclear power plant

Abstract

The utility model discloses a nuclear power plant metal hose detection limit adjusting device, a nuclear power plant metal hose comprises a metal hose body, a first mounting flange and a second mounting flange, the first mounting flange is provided with a first through hole and a first flange hole, and the second mounting flange is provided with a second through hole and a second flange hole. The device comprises a first flange, a second flange and a fastening assembly, the first flange is provided with a pressurizing channel and a third flange hole, and the first flange is further provided with a pressurizing connector; a plurality of fourth flange holes are formed in the second flange; the fastening assembly comprises a screw rod, a first fastening nut, a second fastening nut, a third fastening nut and a fourth fastening nut, the nuclear power plant metal hose detection limiting adjustment device can limit the length of a nuclear power plant metal hose when the nuclear power plant metal hose is pressed, length adjustment can be achieved within a certain range through the fastening assembly, and the detection accuracy is improved. And a pressurizing joint is arranged to take the function of a pressurizing tool into consideration.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power, in particular to a metal hose detection limit adjustment device for a nuclear power plant. Background Art

[0002] Many important systems in nuclear power plants are equipped with metal hoses. Due to the complex manufacturing process, many interface welding parts, and the hydraulic forming of the internal bellows, the thin wall thickness is easy to cause damage. Therefore, the metal hoses are generally subjected to routine pressure testing during on-site installation and use.

[0003] Pressurizing of metal hoses is different from pressurizing of pipes, metal valves, etc. The inside of metal hoses is a bellows. If the size is not restricted during pressurization, the pressurization process may cause the internal bellows to stretch, wear, or deform, which may easily make the equipment unusable. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a detection limit adjustment device for a metal hose of a nuclear power plant.

[0005] The technical solution adopted by the utility model to solve its technical problems is: constructing a nuclear power plant metal hose detection limit adjustment device for performing limit adjustment on the nuclear power plant metal hose, the nuclear power plant metal hose comprising a metal hose body, a first mounting flange being provided at the first end in the length direction of the metal hose body, a first through hole and a plurality of first flange holes being provided on the first mounting flange, a second mounting flange being provided at the second end in the length direction of the metal hose body, a second through hole and a plurality of second flange holes being provided on the second mounting flange, the first through hole and the second through hole being communicated with the inner cavity of the metal hose body, the nuclear power plant metal hose detection limit adjustment device comprising a first flange, a second flange and a fastening assembly, the first flange being arranged opposite to the first mounting flange, a pressure charging channel and a plurality of third flange holes being provided on the first flange, a pressure charging joint being further provided on the first flange, the pressure charging joint being arranged in communication with the pressure charging channel; the second flange being arranged opposite to the second mounting flange, a plurality of fourth flange holes being provided on the second flange;

[0006] The fastening assembly includes a plurality of screws, a plurality of first fastening nuts, a plurality of second fastening nuts, a plurality of third fastening nuts and a plurality of fourth fastening nuts. The screw is used to pass through the first flange hole, the second flange hole, the third flange hole and the fourth flange hole. The first fastening nut is installed on the screw and abuts the end surface of the first mounting flange facing away from the first flange. The second fastening nut is installed on the screw and abuts the end surface of the first flange facing away from the first mounting flange. The third fastening nut is installed on the screw and abuts the end surface of the second mounting flange facing away from the second flange. The fourth fastening nut is installed on the screw and abuts the end surface of the second flange facing away from the second mounting flange.

[0007] In some embodiments, a first sealing member is provided on an end surface of the first flange facing the first mounting flange.

[0008] In some embodiments, the first sealing member includes a rubber ring or an annular rubber plate.

[0009] In some embodiments, the second flange except for the fourth flange hole is a solid structure.

[0010] In some embodiments, a second sealing member is provided on an end surface of the second flange facing the second mounting flange.

[0011] In some embodiments, the second sealing member includes a rubber ring or an annular rubber plate.

[0012] In some embodiments, the number of the first flange hole, the second flange hole, the third flange hole, and the fourth flange hole are all four.

[0013] In some embodiments, the first fastening nut, the second fastening nut, the third fastening nut, and the fourth fastening nut have the same specifications.

[0014] In some embodiments, the number of the screws is four.

[0015] In some embodiments, the first flange and the second flange are both metal flanges.

[0016] The implementation of the utility model has the following beneficial effects: the application of the nuclear power plant metal hose detection limit adjustment device can limit the length of the nuclear power plant metal hose when the nuclear power plant metal hose is pressurized, and the length can be adjusted within a certain range through the fastening component, and the configuration of the pressure charging joint takes into account the pressurization tooling function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0018] Figure 1 It is a structural schematic diagram of a metal hose detection limit adjustment device for a nuclear power plant in some embodiments of the present utility model. DETAILED DESCRIPTION

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0020] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", and "third" can explicitly or implicitly include one or more of these 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.

[0021] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present invention with unnecessary detail.

[0022] See Figure 1 The utility model shows a nuclear power plant metal hose detection limit adjustment device 20, which is used to limit adjust the nuclear power plant metal hose 10. The nuclear power plant metal hose 10 includes a metal hose body 11. The first end of the metal hose body 11 in the length direction is provided with a first mounting flange 12, and the first mounting flange 12 is provided with a first through hole 121 and a plurality of first flange holes 122. The second end of the metal hose body 11 in the length direction is provided with a second mounting flange 13, and the second mounting flange 13 is provided with a second through hole 131 and a plurality of second flange holes 132. The first through hole 121 and the second through hole 131 are connected to the inner cavity of the metal hose body 11.

[0023] The nuclear power plant metal hose detection limit adjustment device 20 includes a first flange 21, a second flange 22, and a fastening assembly 23. The first flange 21 is disposed opposite the first mounting flange 12 and is provided with a pressure charging channel 211 and a plurality of third flange holes 212. The first flange 21 is also provided with a pressure charging connector 24, which is connected to the pressure charging channel 211. The pressure charging connector 24 can be a quick connector for connecting a pressure charging pipeline, which can be provided with a regulating valve / pressure reducing valve and connected to a pressure charging gas source. The second flange 22 is disposed opposite the second mounting flange 13 and is provided with a plurality of fourth flange holes 221.

[0024] The fastening assembly 23 includes a plurality of screws 231, a plurality of first fastening nuts 232, a plurality of second fastening nuts 233, a plurality of third fastening nuts 234 and a plurality of fourth fastening nuts 235. The screw 231 is used to penetrate the first flange hole 122, the second flange hole 132, the third flange hole 212 and the fourth flange hole 221. The first fastening nut 232 is installed on the screw 231 and abuts the end surface of the first mounting flange 12 facing away from the first flange 21. The second fastening nut 233 is installed on the screw 231 and abuts the end surface of the first flange 21 facing away from the first mounting flange 12. The third fastening nut 234 is installed on the screw 231 and abuts the end surface of the second mounting flange 13 facing away from the second flange 22. The fourth fastening nut 235 is installed on the screw 231 and abuts the end surface of the second flange 22 facing away from the second mounting flange 13.

[0025] In some embodiments, a first sealing member 25 is provided on the end surface of the first flange 21 facing the first mounting flange 12. Preferably, the first sealing member 25 includes but is not limited to a rubber ring or an annular rubber plate. The provision of the first sealing member 25 can improve the sealing performance.

[0026] In some embodiments, the second flange 22 is a solid structure except for the fourth flange hole 221 to block the second through hole 131 .

[0027] In some embodiments, the end surface of the second flange 22 facing the second mounting flange 13 is provided with a second sealing member 26. Preferably, the second sealing member 26 includes but is not limited to a rubber ring or an annular rubber plate. The provision of the second sealing member 26 can improve the sealing performance.

[0028] In some embodiments, the number of the first flange hole 122, the second flange hole 132, the third flange hole 212, and the fourth flange hole 221 are all four. Of course, the number of the third flange hole 212 and the fourth flange hole 221 can be set according to actual needs.

[0029] In some embodiments, there are four screw rods 231. Of course, the number and specifications of the screw rods 231 can be selected and set according to actual needs.

[0030] In some embodiments, the first fastening nut 232 , the second fastening nut 233 , the third fastening nut 234 , and the fourth fastening nut 235 have the same specifications.

[0031] In some embodiments, the first flange 21 and the second flange 22 are both metal flanges, for example, flanges made of stainless steel.

[0032] The application of the nuclear power plant metal hose detection limit adjustment device 20 can limit the length of the nuclear power plant metal hose 10 when the nuclear power plant metal hose 10 is pressurized. The nuclear power plant metal hose detection limit adjustment device 20 can limit the lengthening of the nuclear power plant metal hose 10 and limit the reverse compression of the nuclear power plant metal hose 10. The length can be adjusted within a certain range through the fastening component 23, and the pressure charging joint 24 is configured to take into account the pressurization tooling function.

[0033] In addition, the nuclear power plant metal hose detection limit adjustment device 20 has a simple and convenient structure. After being assembled with the nuclear power plant metal hose 10, it can be placed in the desalted water pool / desalted water tank together to observe whether there are bubbles or leakage during the pressurization process / pressurization process, and the effect is obvious.

[0034] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A nuclear power plant metal hose detection limit adjustment device, used for performing limit adjustment on a nuclear power plant metal hose (10), wherein the nuclear power plant metal hose (10) comprises a metal hose body (11), wherein a first mounting flange (12) is provided at a first end in a longitudinal direction of the metal hose body (11), wherein a first through hole (121) and a plurality of first flange holes (122) are provided on the first mounting flange (12), wherein a second through hole (131) and a plurality of second flange holes (132) are provided on the second end in a longitudinal direction of the metal hose body (11), wherein the second through hole (121) and the second through hole (131) are communicated with an inner cavity of the metal hose body (11), and wherein: The nuclear power plant metal hose detection limit adjustment device comprises a first flange (21), a second flange (22) and a fastening assembly (23), wherein the first flange (21) is arranged opposite to the first mounting flange (12), the first flange (21) is provided with a pressure charging channel (211) and a plurality of third flange holes (212), the first flange (21) is further provided with a pressure charging joint (24), the pressure charging joint (24) is connected to the pressure charging channel (211); the second flange (22) is arranged opposite to the second mounting flange (13), and the second flange (22) is provided with a plurality of fourth flange holes (221); The fastening assembly (23) includes a plurality of screw rods (231), a plurality of first fastening nuts (232), a plurality of second fastening nuts (233), a plurality of third fastening nuts (234) and a plurality of fourth fastening nuts (235), wherein the screw rods (231) are used to penetrate the first flange hole (122), the second flange hole (132), the third flange hole (212) and the fourth flange hole (221), and the first fastening nut (232) is installed on the screw rods (231) and abuts against the first mounting flange (12) away from the first mounting flange (12). On the end face of the first flange (21), the second fastening nut (233) is installed on the screw rod (231) and abuts the end face of the first flange (21) facing away from the first mounting flange (12), the third fastening nut (234) is installed on the screw rod (231) and abuts the end face of the second mounting flange (13) facing away from the second flange (22), and the fourth fastening nut (235) is installed on the screw rod (231) and abuts the end face of the second flange (22) facing away from the second mounting flange (13).

2. The nuclear power plant metal hose detection limit adjustment device according to claim 1, characterized in that: A first sealing member is provided on the end surface of the first flange (21) facing the first mounting flange (12).

3. The nuclear power plant metal hose detection limit adjustment device according to claim 2, characterized in that: The first sealing member includes a rubber ring or an annular rubber plate.

4. The nuclear power plant metal hose detection limit adjustment device according to claim 1, characterized in that: The second flange (22) is a solid structure except for the fourth flange hole (221).

5. The nuclear power plant metal hose detection limit adjustment device according to claim 4, characterized in that: A second sealing member is provided on the end surface of the second flange (22) facing the second mounting flange (13).

6. The nuclear power plant metal hose detection limit adjustment device according to claim 5, characterized in that: The second sealing member includes a rubber ring or an annular rubber plate.

7. The nuclear power plant metal hose detection limit adjustment device according to any one of claims 1 to 6, characterized in that: The number of the first flange hole (122), the second flange hole (132), the third flange hole (212), and the fourth flange hole (221) are all four.

8. The nuclear power plant metal hose detection limit adjustment device according to any one of claims 1 to 6, characterized in that: The number of the screws (231) is four.

9. The nuclear power plant metal hose detection limit adjustment device according to any one of claims 1 to 6, characterized in that: The first fastening nut (232), the second fastening nut (233), the third fastening nut (234) and the fourth fastening nut (235) have the same specifications.

10. The nuclear power plant metal hose detection limit adjustment device according to any one of claims 1 to 6, characterized in that: The first flange (21) and the second flange (22) are both metal flanges.

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