CN115091186A - Guide device for wire-planting flange of large container equipment of nuclear power station - Google Patents
Guide device for wire-planting flange of large container equipment of nuclear power station Download PDFInfo
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- CN115091186A CN115091186A CN202210504883.4A CN202210504883A CN115091186A CN 115091186 A CN115091186 A CN 115091186A CN 202210504883 A CN202210504883 A CN 202210504883A CN 115091186 A CN115091186 A CN 115091186A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention belongs to the technical field of mechanical design, and particularly relates to a guide device for a wire-planting flange of large-scale container equipment of a nuclear power station. The invention comprises a plurality of guide bolts, each guide bolt is integrally in a round bar shape, and a thread section is positioned at the lowest end and is used for being in threaded connection with an equipment body; the guide body is positioned at the middle section, and the guide body is connected with the thread section in a welding way or integrally formed and used for positioning the flange cover; the upper end fixed mounting of guide body has the connecting pin for cooperate the spanner to twist into the guide bolt and screw out. The automatic alignment device can realize automatic alignment of the flange cover plate and the equipment body flange plate to the neutral bolt holes, reduce the requirement on the operation skills of maintenance personnel and save the installation time of the flange.
Description
Technical Field
The invention belongs to the technical field of mechanical design, and particularly relates to a guide device for a wire-planting flange of large-scale container equipment of a nuclear power station.
Background
Due to the particularity of the nuclear power station, the nuclear power station has extremely low tolerance to equipment leakage. Large vessel equipment is important equipment of a nuclear power station, and flange leakage is one of the main types of vessel equipment leakage. The leakage of the flange is caused by a plurality of factors, wherein the quality problem of flange installation is an important item. In order to avoid unacceptable leakage, the nuclear power station has high requirements on the installation quality of the flange of the container type equipment. Misalignment of the flange cover plate and the flange plate of the equipment body and misalignment of the bolt holes are main flange mounting quality problems. The flange cover and the flange of the equipment body are not aligned to cause the misalignment between the working part of the flange sealing surface and the sealing washer, thereby causing the leakage of the flange. Misalignment of the flange cover bolt holes and the equipment body flange bolt holes will cause uneven stress on the sealing gaskets, thereby causing flange leakage. Large vessel type equipment has particularly high requirements on alignment of the flange with the middle bolt hole. In actual work, the alignment of the flanges to the middle bolt holes requires high operating skills of maintenance personnel and consumes much time. Nuclear power plants require as short a maintenance time of equipment as possible for economic reasons. In order to solve these problems in flange mounting, a guiding device is needed to automatically align the flange cover plate and the flange plate of the equipment body to the neutral bolt holes during flange mounting, so as to achieve the accuracy and rapidity of aligning the flange to the neutral bolt holes. The wire-planting type flange is a flange form which is commonly adopted by nuclear power station container equipment, the bolt holes of the flange are used for planting wires, the bolt holes of the flange cover are cylindrical through holes, the inner surface is smooth, the opening direction in the wire-planting type flange is vertical and upward, and a simple and efficient flange guide device can be designed according to the characteristics of the flange guide device and used for installing the flange cover.
In the prior art, a flange installation guide device of nuclear power station container equipment is not inquired. Other equipment flange installation guider need set up guide way or guiding hole in addition, or realize the flange direction centering with the help of other more complicated devices. The provision of guide grooves or guide holes causes a reduction in the strength of the flange, with the need for additional modification and guide procurement. The more complicated guiding device is complicated to operate and higher in purchasing cost.
Disclosure of Invention
Aiming at the technical problems of the prior art, the invention provides the guide device for the wire-planting flange of the large-scale container equipment of the nuclear power station, which can realize the automatic alignment of the flange cover plate and the equipment body flange plate on the neutralizing bolt hole, reduce the requirements on the operation skills of maintenance personnel and save the installation time of the flange.
The technical scheme adopted by the invention is as follows:
a guiding device for a wire-planting flange of large-scale container equipment of a nuclear power station comprises a plurality of guiding bolts, wherein each guiding bolt is integrally in a round rod shape, and a thread section is positioned at the lowest end and is used for being in threaded connection with an equipment body; the guide body is positioned at the middle section, and the guide body is connected with the thread section in a welding way or integrally formed and used for positioning the flange cover; the upper end fixed mounting of guide body has the connecting pin for cooperate the spanner to twist into the guide bolt and screw out.
The thread profile and length of the thread section are consistent with the thread in the equipment body.
The upper end of the thread section is flush with the upper end face of the equipment body after the thread inserting hole of the equipment body is screwed in, and no thread is exposed.
The guide body is divided into two sections, the upper section of the guide body is a cone with a smooth surface and a certain radian, the lower section of the guide body is a cylinder, the cylinder is respectively connected with the cone and the thread section, and the cylinder is integrally formed with the cone and the thread section.
The diameter of the cylinder is slightly smaller than that of the bolt hole of the flange cover, the circular arc surface of the cone is tangent to the surface of the cylinder, and the surfaces of the cone and the cylinder are smooth.
The cylinder length is a small section of the flange cover which is hoisted in place and then extends into the bolt hole of the flange cover.
The distance between the upper end face of the cylinder and the lower end face of the flange cover is 5 mm.
The upper end of the cone is provided with a connecting pin.
And a sealing gasket is arranged between the flange cover and the equipment body.
The invention has the beneficial effects that:
(1) the guide device for the wire-cutting flange of the large-scale container equipment of the nuclear power station solves the problems that a flange cover and an equipment body flange are not easy to align in flange installation and bolt holes of the flange cover and the equipment body flange are not easy to align. The flange installation quality problem is a main factor causing flange leakage, and misalignment between a flange cover and an equipment body flange is a common flange installation quality problem. The flange cover and the flange of the equipment body are not aligned to cause the misalignment between the working part of the flange sealing surface and the sealing washer, thereby causing the leakage of the flange. Misalignment of the flange cover bolt holes and the equipment body flange bolt holes is also a common quality problem for flange installation. Misalignment of the flange cover bolt holes and the equipment body flange bolt holes will cause uneven stress on the sealing gaskets, thereby causing flange leakage. The common flange plate of large-scale container equipment is large, the field operation environment is poor, and in the actual flange cover installation, the alignment difficulty of the cover plate and the equipment body flange and the alignment difficulty of the flange cover bolt hole and the equipment body flange bolt hole are large. The flange cover automatic alignment device can realize automatic alignment of the flange cover and the equipment body flange in flange installation, and automatic alignment of the flange cover bolt holes and the equipment body flange bolt holes, has high alignment accuracy, and completely meets the flange installation requirement.
(2) The guide device for the wire-planting flange of the large-scale container equipment of the nuclear power station reduces the operation difficulty of installation personnel and reduces the requirement on the skills of the personnel. The flange diameter of large-scale container equipment is large, the flange cover is large and heavy, and the field operation environment is poor, so that the flange cover is difficult to align with the bolt hole. More container type equipment of nuclear power station is splendid attire radioactive substance, has great radiation dose in flange hole department, causes adverse effect to personnel's psychology, has also increased the flange installation operation degree of difficulty.
(3) The guide device for the wire-planting flange of the large-scale container equipment of the nuclear power station avoids repeated manual measurement and alignment, improves the flange installation efficiency and saves the installation time. Nuclear power plants require as short a maintenance time of equipment as possible for economic reasons. The installation of large-scale container class equipment flange apron often needs to use factory building ring to hang, involves and occupies the mainline time, more needs to shorten installation time.
(4) The guide device for the wire-planting flange of the large-scale container equipment of the nuclear power station provided by the invention can reduce the radiation irradiation dose to personnel. More container type equipment of the nuclear power station contains radioactive substances, and the flange hole has larger radiation dose. The radiation exposure dose of personnel is in direct proportion to the working time, so that the installation time is saved, and the radiation exposure dose of personnel is reduced.
(5) The guide device for the wire-planting flange of the large-scale container equipment of the nuclear power station improves the mounting quality of the flange. The invention uses two identical guide bolts, can realize automatic alignment of the flange cover to the middle bolt hole, and avoids errors caused by manual alignment. The diameter of the guide bolt is only slightly smaller than that of the bolt hole of the flange cover, so that high centering precision can be realized, the requirement of flange installation is met, and flange leakage caused by the problem of flange installation quality is effectively reduced.
(6) The guide device for the wire-planting flange of the large-scale container equipment of the nuclear power station does not need to be additionally provided with a guide groove or a guide hole, does not influence the strength of the flange, and saves the cost for transforming the flange. All parts of nuclear power plant container equipment are subjected to detailed strength calculation, and the shape, the thickness and the like of a flange are the results of the strength calculation. In addition, the guide groove or the guide hole is arranged, the strength of the flange is influenced, and equipment is unavailable due to the fact that the check calculation is not met.
(7) Compared with other guide devices, the guide device for the wire-planting flange of the large-scale container equipment of the nuclear power station has the advantages of simple structure, convenience in installation and disassembly, small occupied space and capability of saving the purchase cost of the device. Other special guider structures and operation are complicated, and the installation is demolishd inconveniently, and the installation need occupy certain space, and on-the-spot actual environment does not necessarily satisfy the requirement, and purchasing expense is higher simultaneously, and the storage space that needs is also big.
Drawings
Fig. 1 is a schematic structural view of a guiding device for a wire-planting flange of large-scale container equipment of a nuclear power plant, provided by the invention;
FIG. 2 is a schematic installation diagram of a guiding device for a wire-planting flange of large-scale container equipment of a nuclear power plant, provided by the invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
in the figure: 1-connecting pin, 2-guiding body, 3-thread section, 4-guiding bolt, 5-flange cover, 6-sealing washer and 7-equipment body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixed or detachable or integral; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a guide device for a wire-cutting flange of large-scale container equipment of a nuclear power station, which comprises a plurality of guide bolts, as shown in figures 1 and 2, wherein each guide bolt is integrally in the shape of a round rod and is integrally formed, and a thread section 3 is positioned at the lowest end and is used for being in threaded connection with an equipment body 7; the guide body 2 is positioned at the middle section, and the guide body 2 and the thread section 3 are used for positioning the flange cover 5; the upper end of the guide body 2 is provided with a connecting pin 1 which is used for matching with a wrench to screw in and screw out the guide bolt.
The thread form and the length of the thread section 3 are consistent with those of the threads in the equipment body 7, the upper end of the thread section 3 is flush with the upper end face of the equipment body 7 after the thread section is screwed into the thread planting hole of the equipment body 7, and no thread is exposed;
the guide body 2 is divided into two sections, the upper section of the guide body is a cone with smooth surface and a certain radian, the lower section of the guide body is a cylinder, the cylinder is respectively connected with the cone and the thread section 3, the diameter of the cylinder is slightly smaller than the diameter of a bolt hole of the flange cover 5, the circular arc surface of the cone is tangent to the surface of the cylinder, the surfaces of the cone and the cylinder are smooth, as shown in figure 3, the length of the cylinder is a small section which is stretched into the bolt hole of the flange cover 5 after the flange cover 5 is hoisted in place, as shown in the position A, namely, the distance between the upper end surface of the cylinder and the lower end surface of the flange cover 5 is about 5 mm;
the upper end of the cone is provided with a connecting pin 1 which is used for dismounting the guide bolt and can be screwed by a spanner;
a sealing gasket 6 is arranged between the flange cover 5 and the equipment body 7.
The working principle of the invention is as follows:
the invention is suitable for the vertically upward opening of large-scale container equipment of a nuclear power station, namely the wire-planting type flange, and the flange cover is installed in a hoisting manner. Before the flange cover is installed, the flange sealing surface is cleaned, the sealing washer is placed in a flange hole, the two guide bolts are installed in the two bolt holes on the same diameter on the equipment body, the flange cover is lifted above the flange hole and is placed, when the flange cover is in contact with the guide bolts, the flange cover is turned to slightly, the guide bolts can be inserted into the bolt holes of the flange cover, and the flange cover can be placed. As shown in fig. 2, as the flange cover is lowered, the guide bolts can automatically center the flange cover and the flange plate of the equipment body, and the bolt holes of the flange cover are aligned with the bolt holes of the flange. After the flange cover is completely dropped into place (as shown in fig. 3), a spanner is used to screw the small square head at the top end of the guide bolt, and the guide bolt is removed.
In the descending process of the flange cover, the two guide bolts extend into the bolt holes of the flange cover, the smooth surfaces of the guide bolts can enable the bolt holes of the flange cover and the bolt holes of the flange of the equipment body to be automatically aligned, and the two guide bolts can be simultaneously positioned to enable the flange cover and the flange of the equipment body to be automatically centered.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (9)
1. The utility model provides a guider that is used for large-scale container class equipment of nuclear power station to plant silk flange which characterized in that: the device comprises a plurality of guide bolts, each guide bolt is integrally in a round bar shape, and the thread section (3) is positioned at the lowest end and is used for being in threaded connection with the device body (7); the guide body (2) is positioned at the middle section, and the guide body (2) is connected with the thread section (3) through welding or integrally formed and used for positioning the flange cover (5); the upper end of the guide body (2) is provided with a connecting pin (1) which is used for being matched with a wrench to screw in and screw out the guide bolt.
2. The guiding device for the wire-planting flange of the large-scale container equipment of the nuclear power plant as claimed in claim 1, wherein: the thread profile and the length of the thread section (3) are consistent with those of the thread in the equipment body (7).
3. The guiding device for the wire-cutting flange of the large-scale container equipment of the nuclear power plant as claimed in claim 2, characterized in that: the upper end of the rear thread section (3) screwed into the thread planting hole of the equipment body (7) is flush with the upper end face of the equipment body (7), and no thread is exposed.
4. The guiding device for the wire-planting flange of the large-scale container equipment of the nuclear power plant as claimed in claim 1, wherein: the guide body (2) is divided into two sections, the upper section of the guide body is a cone with a smooth surface and a certain radian, the lower section of the guide body is a cylinder, the cylinder is respectively connected with the cone and the thread section (3), and the cylinder is integrally formed with the cone and the thread section (3).
5. The guiding device for the wire-planting flange of the large-scale container equipment of the nuclear power plant as claimed in claim 4, wherein: the diameter of the cylinder is slightly smaller than that of the bolt hole of the flange cover (5), the circular arc surface of the cone is tangent to the surface of the cylinder, and the surfaces of the cone and the cylinder are smooth.
6. The guiding device for the wire-planting flange of the large-scale container equipment of the nuclear power plant as claimed in claim 5, wherein: the length of the cylinder is a small section which is hoisted to be in place by the flange cover (5) and then extends into a bolt hole of the flange cover (5).
7. The guiding device for the wire-planting flange of the large-scale container equipment of the nuclear power plant as claimed in claim 6, wherein: the distance between the upper end face of the cylinder and the lower end face of the flange cover (5) is 5 mm.
8. The guiding device for the wire-cutting flange of the large-scale container equipment of the nuclear power plant as claimed in claim 1, characterized in that: the upper end of the cone is provided with a connecting pin (1).
9. The guiding device for the wire-planting flange of the large-scale container equipment of the nuclear power plant as claimed in claim 1, wherein: and a sealing gasket (6) is arranged between the flange cover (5) and the equipment body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210504883.4A CN115091186A (en) | 2022-05-10 | 2022-05-10 | Guide device for wire-planting flange of large container equipment of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210504883.4A CN115091186A (en) | 2022-05-10 | 2022-05-10 | Guide device for wire-planting flange of large container equipment of nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115091186A true CN115091186A (en) | 2022-09-23 |
Family
ID=83287567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210504883.4A Pending CN115091186A (en) | 2022-05-10 | 2022-05-10 | Guide device for wire-planting flange of large container equipment of nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115091186A (en) |
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2022
- 2022-05-10 CN CN202210504883.4A patent/CN115091186A/en active Pending
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