CN115807885A - Automatic concentric positioning anti-loosening flange assembly - Google Patents
Automatic concentric positioning anti-loosening flange assembly Download PDFInfo
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- CN115807885A CN115807885A CN202211440484.2A CN202211440484A CN115807885A CN 115807885 A CN115807885 A CN 115807885A CN 202211440484 A CN202211440484 A CN 202211440484A CN 115807885 A CN115807885 A CN 115807885A
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Abstract
An automatic concentric positioning anti-loose flange assembly relates to a flange assembly, which provides two structural forms of a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly connecting flange, wherein one structural form is a connecting form (shown in figures 1 and 2) that a stud bolt (shown in figures 26 and 28) relatively clamps two flange plates. Another type of fastener connecting flange is a single-head bolt (27, fig. 29) connecting type, i.e. a single-head bolt screws one flange into a screw hole of the other flange to butt against the two flanges (fig. 3 and fig. 4). After the flange connecting nut is screwed, the bolt is locked by the concentric locking sleeve of the locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly, so that loosening is prevented, the flanges at two ends cannot be dislocated due to axial and radial loosening, and meanwhile, the flange concentricity can be automatically corrected through the matching of the conical surface embedding sleeve.
Description
Technical Field
The invention relates to a flange assembly, in particular to an automatic concentric positioning anti-loosening flange assembly.
Background
The flange connection has the advantages of convenient and fast installation and disassembly, high connection strength and the like, and is widely applied to pipelines, equipment and transmission. At present, flange connection modes used at home and abroad are connection modes established several decades ago, and although the flange connection modes have the advantages of convenience in installation, maintenance, modularization installation and the like, the flange connection modes have the defects that the concentricity and the coaxiality of flanges at two ends are difficult to guarantee, connection sealing is easy to loosen and leak, and the like.
When the standard form of the flange is established, the manufacturing and process level at that time and relatively simple process working conditions at that time are proper and appropriate at that time, but with the progress of science and technology and industry, the medium working conditions are more and more complex and the requirements are more and more strict, and the flange connection mode used at present exposes the following serious problems:
1. the concentricity and the coaxiality of flanges at two ends of the existing flange connection are mainly concentric by bolt holes and bolts, but the flange connection needs fit clearance during installation, the fit clearance of the bolt holes and the flanges is generally about 10 percent of the diameter of the bolts, the concentricity and the coaxiality of the flanges at the two ends are not realized (or the concentricity and the coaxiality are poor), the concentricity and the coaxiality need to be corrected manually, and particularly, under the condition of large pipe diameter or high concentricity and coaxiality requirement, time and labor are wasted, and the concentricity and the coaxiality requirement are difficult to achieve.
2. The existing flange connection and the axial and radial looseness prevention are realized by the friction force between a nut and a flange or a gasket, and the flange connection and the radial looseness prevention are feasible under the condition of no vibration or collision at all, but the ideal working condition is difficult to realize. Due to vibration generated by medium flow, equipment operation, environment and the like, the flange generates a co-vibration phenomenon. The flange is easy to loosen or misplace by the existing flange connection mode; in the environment with high temperature and large temperature difference, the flange is easy to loosen or misplace due to expansion caused by temperature change and contraction caused by temperature change; when the pipeline is buried, the flange of the pipeline is easy to loosen or misplace due to geological movement.
The flange loosening or dislocation, when used for flange connection with sealing, can cause leakage or leakage at the flange connection part, and due to the complexity and the rigor of modern industry, if the leakage or leakage of media occurs, very serious consequences can be caused. The main reason that most chemical devices, petrochemical devices, urban gas and liquefied gas are in fire disasters and explosions at home and abroad is caused by leakage or leakage caused by looseness of flange connection parts in operation; the flange joint is used for flange joint without sealing, and can cause serious mechanical safety accidents of equipment or transmission of the flange joint, such as deviation, falling, clamping stagnation, collision, flying and the like.
Therefore, the flange connection and the flange connection fastener which are automatically concentrically positioned, safe, reliable, stable, accurate and fast must be researched and developed, so that the flange connection is prevented from loosening or misplacing in the operation of a device or equipment, the leakage or leakage phenomenon at the flange connection part is prevented, and safety accidents caused by the leakage or leakage are effectively avoided; the flange connection device can prevent serious mechanical safety accidents such as deviation, falling, clamping stagnation, collision, flying and the like of flange connection equipment or transmission, and realizes a first safe design concept.
Disclosure of Invention
After the flange connecting nut is screwed, the concentric locking sleeve of the locking sleeve type automatic concentric positioning anti-loose safety bolt assembly locks the bolt, so that loosening is prevented, the flanges at two ends cannot be dislocated due to axial and radial loosening, and meanwhile, the flange concentricity can be automatically corrected through matching of the conical surface embedding sleeves, so that automatic concentric positioning installation is realized. The continuous pressing and sealing of the flange sealing gasket is particularly suitable for being used in severe environments and key parts such as inflammable and explosive environments, aerospace and the like.
The purpose of the invention is realized by the following technical scheme:
an automatic concentric positioning anti-loose flange assembly, the first structural form of the flange is an inner conical surface flange, and a bolt hole of the flange is processed with a tapered inner conical surface, namely, the automatic concentric positioning anti-loose flange (figure 18 and figure 19) with the inner conical surface is connected with a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly-a stud bolt without an embedding sleeve (figure 26) and a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly-a single-head bolt without an embedding sleeve (figure 27) in a combined manner; the flange connecting structure is formed in a mode (shown in figures 1, 2, 3 and 4) that flanges at two ends (an automatic concentric positioning anti-loose flange with an inner conical surface and an automatic concentric positioning anti-loose mating flange with an inner conical surface) are connected with a pipeline or equipment; the flange sealing gasket is arranged between the sealing end surfaces of two flanges, bolt holes which are symmetrically distributed and equally distributed by the centers of the flanges are arranged on the flanges, an inner conical surface with taper is processed in each bolt hole of the flange, and a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly without an embedded sleeve is respectively assembled with a bolt, a nut, an elastic element, a flat washer and a concentric locking sleeve; the structural form is a connection form (figure 1 and figure 2) that the stud bolts oppositely clamp two flanges.
The automatic concentric positioning anti-loosening flange assembly is characterized in that the flanges are connected and fastened in the following manner:
after flange bolt holes at two ends are aligned, a flange sealing gasket is placed on a flange sealing end face, a bolt penetrates through flanges at two ends, a concentric locking sleeve is installed, a nut is fastened, it is determined that the concentric locking sleeve is not clamped at the edge of the bolt hole, then the concentric locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly without an embedding sleeve (shown in figures 26 and 27) is matched with a bolt hole conical surface of an automatic concentric positioning anti-loosening flange with an inner conical surface, the nut is fastened, the conical surface of the concentric locking sleeve moves along the bolt hole conical surface of the automatic concentric positioning anti-loosening flange with the inner conical surface, the concentric locking sleeve is automatically corrected to be concentric through the taper, automatic axial concentricity and radial rotation concentricity of the flanges at two ends are formed, the concentric locking sleeve is inwards contracted through the taper fit and forms gapless fit with the bolt, the taper wedges are integrated to realize axial looseness prevention and dislocation prevention of the flange, the automatic correction concentricity of the bolt holes corresponding to the flanges at two ends is realized, and the axial and radial looseness prevention structure without gaps is realized.
An automatic concentric positioning anti-loose flange assembly is characterized in that a second structural form is a conical surface embedding sleeve flange, bolt holes of flanges are stepped holes and are embedded with conical surface embedding sleeves, the conical surface embedding sleeves are provided with inner conical surfaces, namely, the automatic concentric positioning anti-loose flange with the conical surface embedding sleeves (shown in figures 20 and 21) is matched and connected with a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly without an embedding sleeve (shown in figures 26 and 27); the flange connection structure is composed in a form (fig. 5, 6, 7 and 8), flanges at two ends (an automatic concentric positioning anti-loose flange with a conical surface embedding sleeve and an automatic concentric positioning anti-loose mating flange with a conical surface embedding sleeve) are connected with equipment or parts, and the flange connection end surface is provided with an end surface or a taper matching surface for correcting concentricity and coaxiality; the flange is provided with bolt holes which are symmetrically distributed and equally distributed by the center of the flange, a stepped hole is processed in each flange bolt hole, a conical surface embedding sleeve is embedded in each bolt stepped hole and is provided with an inner conical surface, and the flange is fastened without an embedding sleeve through a locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly which is composed of a plurality of groups of bolts, nuts, elastic elements, flat washers and concentric locking sleeves; the structure is a connection mode that the stud bolts oppositely clamp two flanges (figure 5, figure 6).
The automatic concentric positioning anti-loosening flange assembly is characterized in that the flanges are connected and fastened in the following manner: after the flange bolt holes at two ends are aligned, when the flanges are butted, the bolt penetrates through the flanges at two ends, a concentric locking sleeve is arranged, a nut is fastened, the concentric locking sleeve is confirmed not to be clamped at the edge of the bolt hole, the locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly-the concentric locking sleeve without an embedding sleeve (shown in figures 26 and 27) is matched with the conical surface of the bolt hole of the flange, the nut is fastened, the conical surface of the concentric locking sleeve moves along the conical surface of the bolt hole of the flange, the concentricity is automatically corrected through the taper, the automatic axial concentricity and the radial rotation concentricity of the flanges at two ends are formed, the concentric locking sleeve is inwards shrunk through the taper fit to form a gapless fit with the bolt, and the taper wedges are integrated to realize the axial looseness prevention and the dislocation prevention of the flanges in the radial direction, so that the automatic correction concentricity of the bolt holes corresponding to the flanges at two ends is realized, and the gapless axial looseness prevention structure and the radial looseness prevention are realized.
The flange connection combination mode is that bolt holes of the flange are stepped holes, and are embedded with conical surface embedding sleeves, the conical surface embedding sleeves are provided with inner conical surfaces, namely the automatic concentric positioning anti-loose flanges (shown in figures 20 and 21) with the conical surface embedding sleeves are matched with locking sleeve type automatic concentric positioning anti-loose safety bolt assemblies without the embedding sleeves (shown in figures 26 and 27) for use.
An automatic concentric positioning anti-loose flange assembly is characterized in that a third structural form is a flange with a stepped hole, a bolt hole of the flange is a stepped hole, namely, the flange with the stepped hole is provided with the automatic concentric positioning anti-loose flange (shown in figures 22 and 23) and is matched and connected with a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly (shown in figures 28 and 29); the locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly comprises a bolt, a nut, an elastic element, a flat washer, a concentric locking sleeve and a conical surface embedding sleeve.
The automatic concentric positioning anti-loosening flange assembly is characterized in that the flanges are connected and fastened in the following manner: firstly, a conical surface embedding sleeve of a locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly is embedded into a stepped hole of a stepped hole automatic concentric positioning anti-loosening flange bolt hole in an interference manner; the structural form of the fastener connecting flange is a single-head bolt connecting form, namely, a single-head bolt is used for screwing one flange into a screw hole of the other flange through threads to be butted with two flanges (figures 11 and 12); the rest of the connection is the same as the scheme shown above.
The invention has the advantages and effects that:
the flange of the invention is used for the flange connection of pipelines, pressure vessels and required sealing and the flange connection without sealing for equipment and parts.
The core requirements of the flange connection with sealing are the sealing tightness of the flange connection and the torsional strength and tensile strength of the connection. The sealing tightness is closely related to the installation concentricity and the coaxiality of flange connection, the conventional flange plate does not have the automatic correction function of the concentricity and the coaxiality, and the flange plate has the structure and the function of automatically correcting the concentricity and the coaxiality; the torsional connection strength of the existing flange connection is realized by the friction force of a nut and a flange or a gasket, the torsional strength is low, the tensile strength is easy to loosen and misplace due to vibration or collision because of no anti-loosening structure, so that the tensile strength is rapidly reduced.
The flange connection without sealing is characterized in that the core requirements are the concentricity and the coaxiality of the flange connection and the torsional strength and the tensile strength of the connection, the defects of the existing flange connection are the same, the concentricity and the coaxiality of the connection can be ensured, and the torsional strength and the tensile strength cannot be reduced.
The invention has the following remarkable characteristics:
1. after the flange nut is screwed, the concentric locking sleeve 8 of the locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly locks the bolt to prevent loosening, and the flanges at two ends cannot be dislocated due to axial and radial loosening.
2. After the flange nut is screwed, the concentric locking sleeve 8 of the locking sleeve type automatic concentric positioning anti-loose safety bolt assembly is matched with an inner conical surface (or a conical surface embedding sleeve 9) of the bolt hole, and the concentricity and the coaxiality of the flange can be automatically corrected.
3. After the flange nut is screwed, the elastic element has the functions of eliminating the loosening phenomenon caused by expansion with heat and contraction with cold, preventing the loosening and continuously compressing and sealing the sealing gasket.
4. The inner conical surface (or the conical surface embedding sleeve 9) of the flange bolt hole is matched with the concentric locking sleeve 8 of the locking sleeve type automatic concentric positioning anti-loose safety bolt assembly, the concentricity and the coaxiality of the flanges at two ends can be automatically corrected, after the nut is screwed, each bolt hole of the flanges at two ends can be automatically concentric, automatic concentric positioning and installation are realized, the fussy manual correction process is omitted, the installation is convenient and fast, and the accurate installation of the flange connection is ensured.
5. The flange is particularly suitable for flammable and explosive environment working conditions, toxic and harmful medium working conditions, high-temperature and high-pressure environment working conditions, nuclear radiation working conditions of nuclear power nuclear industry, marine environment working conditions of ships, steamships, offshore platforms and the like, and severe environment working conditions of aerospace and the like in chemical industry, petrochemical industry, liquefied gas, hydrogen industry and the like, and the flange connection achieves the effect of sealing without changing like welding.
Drawings
FIG. 1 is a drawing of a stud inner conical surface flange connection mounting shaft of the present invention;
FIG. 2 is a sectional view showing the flange connection and installation of the inner conical surface of the stud bolt according to the present invention;
FIG. 3 is a drawing of a mounting shaft for the connection of an inner conical surface flange of a single-head bolt according to the invention;
FIG. 4 is a sectional view of the flange connection of the inner conical surface of the single-headed bolt according to the present invention;
FIG. 5 is a mounting shaft mapping diagram of the flange-connected stud of the conical surface insert sleeve of the present invention;
FIG. 6 is an installation cross-sectional view of the conical surface insert sleeve flange connection stud of the present invention;
FIG. 7 is a mounting shaft mapping view of a conical surface insert sleeve flange connection single head bolt of the present invention;
FIG. 8 is a sectional view showing the mounting of a single-ended bolt for flange connection of a conical surface insert sleeve according to the present invention;
FIG. 9 is a perspective view of a stepped bore flange connection stud mounting shaft of the present invention;
FIG. 10 is a sectional view of a stepped bore flange connection stud installation of the present invention;
FIG. 11 is a perspective view of a stepped hole flange connection single head bolt mounting shaft of the present invention;
FIG. 12 is a sectional view of the stepped hole flange connection single head bolt of the present invention installed;
FIG. 13 is a perspective view of the stud inner conical surface flange connection of the present invention without the sealing mounting shaft;
FIG. 14 is a cross-sectional view of the installation of the stud inner conical surface flange connection without a seal in accordance with the present invention;
FIG. 15 is a perspective view of the single headed bolt inner conical surface flange connection of the present invention without the sealing mounting shaft;
FIG. 16 is a cross-sectional view of a single headed bolt with an internally tapered flange attached without a seal in accordance with the present invention;
FIG. 17 is an installation cross-sectional view of a flange-connected stud of the shaft-like conical surface insert sleeve of the present invention;
FIG. 18 is an isometric view of an automatic concentric positioning anti-loosening flange with an internal conical surface according to the present invention;
FIG. 19 is a cross-sectional view of the automatic concentric positioning anti-loosening flange with an internal conical surface according to the present invention;
FIG. 20 is an isometric view of an automatic concentric positioning anti-loosening flange with a conical surface insert sleeve according to the present invention;
FIG. 21 is a cross-sectional view of the automatic concentric positioning anti-loosening flange with a conical surface insert sleeve according to the present invention;
FIG. 22 is an isometric view of the self-centering locking flange with stepped holes of the present invention;
FIG. 23 is a cross-sectional view of the self-centering locking flange with stepped holes of the present invention;
FIG. 24 is an isometric view of the conical insert sleeve of the present invention;
FIG. 25 is a cross-sectional view of the conical insert sleeve of the present invention;
FIG. 26 is a cross-sectional view of a locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly, shown without an insert sleeve stud;
FIG. 27 is a cross-sectional view of a locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly-single head bolt without an insert sleeve;
FIG. 28 is a cross-sectional view of a locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly stud;
FIG. 29 is a cross-sectional view of a single headed bolt of the locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly.
The components in the figure: the locking flange comprises an automatic concentric positioning locking flange 1 with an inner conical surface, an automatic concentric positioning locking mating flange 2 with an inner conical surface, a flange sealing gasket 3, a bolt 4, a nut 5, an elastic element 6, a flat washer 7, a concentric locking sleeve 8, a conical surface embedding sleeve 9, an automatic concentric positioning locking flange 11 with a stepped hole and an automatic concentric positioning locking flange 21 with a conical surface embedding sleeve.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings.
The invention discloses an automatic concentric positioning anti-loosening flange assembly, which is shown in the figure and has three structural forms:
the first structure is an inner conical flange, the bolt holes of the flange are processed with tapered inner conical surfaces, namely, the automatic concentric positioning anti-loose flange 1 with the inner conical surface (figure 18 and figure 19) is matched with a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly without an embedded sleeve stud bolt (figure 26) and a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly without an embedded sleeve single-head bolt (figure 27).
The second structure form is a conical surface embedding sleeve flange, the bolt hole of the flange is a stepped hole, a conical surface embedding sleeve 9 is embedded, the conical surface embedding sleeve 9 is provided with an inner conical surface, namely, the automatic concentric positioning anti-loose flange 21 with the conical surface embedding sleeve (shown in figures 20 and 21) is matched with a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly without an embedding sleeve (shown in figures 26 and 27).
The third structural form is a flange with a stepped hole, and the bolt hole of the flange is a stepped hole, namely the flange 11 (figures 22 and 23) with the conical surface embedding sleeve automatic concentric positioning anti-loose is matched with a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly (figures 28 and 29) for use.
Example 1:
the automatic concentric positioning anti-loose flange 1 with the inner conical surface and the automatic concentric positioning anti-loose mating flange 2 with the inner conical surface at two ends are connected with a pipeline, a shaft or equipment, the flange is provided with a flange sealing surface for sealing, and the sealing forms comprise a full-plane sealing form, a convex surface sealing form, a concave-convex surface sealing form, a tongue-and-groove surface sealing form, a ring connecting surface sealing form and other various sealing forms, and are national standards. The flange material is carbon steel, stainless steel, metal material such as non ferrous metal, or nylon, nonmetal material such as engineering plastics, the flange can weld with the pipe connection, the screw thread, hot melt or the connected mode of multiple differences such as direct processing, flange seal gasket 3 places between the sealed terminal surface of two flanges, flange seal gasket 3 material is metal tooth form gasket, or be the asbestos, metal winding pad or rubber, nylon, material such as tetrafluoro, there is the bolt hole that carries out symmetric distribution and partition with the center of flange on the flange, it has the interior conical surface of tapering to process in every flange bolt hole, through the bolt 4 of multiunit, nut 5, elastic element 6, plain washer 7, the locking cover type automatic concentric positioning locking safety bolt subassembly of concentric locking cover 8 constitution-does not take the cover to fasten, specifically as follows:
after aligning flange bolt holes at two ends, placing a flange sealing gasket on a flange sealing end face, when flanges are butted, a bolt 4 penetrates through the flanges at two ends, a concentric locking sleeve 8 is installed at the moment, a nut 5 is fastened, the concentric locking sleeve 8 cannot be clamped at the edge of the bolt hole, the concentric locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly-the concentric locking sleeve 8 without an embedding sleeve (shown in figures 26 and 27) is matched with the conical surface of the bolt hole of the automatic concentric positioning anti-loosening flange 1 with the inner conical surface, the matching tolerance of the inner diameter of the concentric locking sleeve 8 and the bolt 4 is small and can be in sliding fit, the nut 5 is fastened at the same time, the conical surface of the concentric locking sleeve 8 moves along the conical surface of the bolt hole of the automatic concentric positioning anti-loosening flange 1 with the inner conical surface, the concentricity is automatically corrected through the taper, the automatic concentric axial concentric and radial rotation of the flanges at two ends are formed, the concentric locking sleeve 8 is inwards shrunk through the taper fit, the bolt 4 is in gapless fit, and the axial and the radial looseness prevention structure of the flanges are integrated through the taper wedges, so as to realize the axial and the radial looseness prevention of the axial and the radial looseness of the flanges corresponding to achieve the connection effect similar to the welding. All flange bolts are installed completely, the bolt holes of all screw holes in each group are automatically corrected to be concentric, the flange is axially and radially prevented from loosening and being misplaced, the safe connection effect is achieved, leakage or leakage caused by loosening and misplacing of the flange due to external forces such as vibration and collision is eliminated, media are prevented from leaking, accordingly, potential safety hazards caused by the leakage or the looseness are eliminated, and safe, fault-free and long-period operation of the device or equipment is achieved.
Example 2:
flange connection without seal embodiment: the flange joint is used for equipment and parts without sealing flanges.
The flange connecting structure comprises the following components in form: (fig. 13, 14, 15, 16) this is that the invention applies to the equipment and the part without the sealed flange connection, the two end flange (the automatic concentric location anti-loose flange 1 with inner conical surface and the automatic concentric location anti-loose mating flange 2 with inner conical surface) is connected with the equipment, the shaft or the part, the flange has the end surface or the taper matching surface for the correction of the concentricity and the coaxiality, the flange material can be carbon steel, stainless steel, nonferrous metal, and other metal materials, also can be nylon, plastics or engineering plastics and other non-metal materials, the flange and the equipment or the part connection can be welding, screw thread, hot melt or direct processing and other different connection methods, the flange has the bolt holes which are distributed symmetrically and equally distributed with the center of the flange, each flange bolt hole is processed with the tapered inner cone bolt surface, through the multiple sets of bolt 4, nut 5, elastic element 6, flat washer 7, concentric locking sleeve 8, the locking sleeve type automatic concentric location safety bolt assembly-without the embedded sleeve is fastened, specifically as follows:
after the flange bolt holes at two ends are aligned, when the flanges are butted, the bolt 4 penetrates through the flanges at two ends, when the concentric locking sleeve 8 is installed and the nut 5 is fastened, the concentric locking sleeve 8 is confirmed not to be clamped at the edge of the bolt hole, the concentric locking sleeve 8 of the bolt assembly (figures 26 and 27) is matched with the bolt hole conical surface of the automatic concentric positioning anti-loosening flange 1 with the inner conical surface, the matching tolerance of the inner diameter of the concentric locking sleeve 8 and the bolt 4 is extremely small, the nut 5 is fastened, the conical surface of the concentric locking sleeve 8 moves along the bolt hole conical surface of the automatic concentric positioning anti-loosening flange 1 with the inner conical surface, the concentricity is automatically corrected through the taper, the automatic axial concentricity and the radial rotation concentricity of the flanges at two ends are formed, the concentric locking sleeve 8 is shrunk inwards through the taper fit and forms the gapless fit with the bolt 4, and the taper wedges are integrated to realize the axial looseness prevention and the dislocation prevention of the flanges, the connection effect similar to welding is achieved, and the automatic correction concentricity of the bolt holes corresponding to the flanges at two ends is finally realized, and the gapless axial looseness prevention structure is realized. All flange bolts are installed completely, the bolt holes of all screw holes in each group are automatically corrected to be concentric, the flange is axially and radially prevented from loosening and being misplaced, the safe connection effect is achieved, loosening and misplacement caused by external forces such as vibration and collision of the flange are eliminated, and safe, fault-free and long-period operation of the device or equipment is achieved.
The second structure form of flange connection is that the bolt holes of the flange are stepped holes, and are embedded with conical surface embedding sleeves 9, the conical surface embedding sleeves 9 are provided with inner conical surfaces, namely, the automatic concentric positioning anti-loose flange 21 with the conical surface embedding sleeves (figures 20 and 21) is matched with a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly without embedding sleeves (figures 26 and 27).
The second structure form of the automatic concentric positioning anti-loose flange component connection of the invention is that the bolt hole of the flange is a stepped hole, and is embedded with a conical surface embedding sleeve 9, the conical surface embedding sleeve 9 is provided with an inner conical surface, and the automatic concentric positioning anti-loose flange 21 with the conical surface embedding sleeve is combined, the flange locking sleeve type automatic concentric positioning anti-loose safety bolt component is matched with a locking sleeve type automatic concentric positioning anti-loose safety bolt component without an embedding sleeve for use, and the locking sleeve type automatic concentric positioning anti-loose safety bolt component without the embedding sleeve comprises a bolt 4, a nut 5, an elastic element 6, a flat washer 7 and a concentric locking sleeve 8. The functional principle of the flange connection with sealing is the same as in embodiment 1, and the functional principle of the flange connection without sealing is the same as in embodiment 2.
Example 3:
the third structural form of flange connection is that the bolt holes of the flange are stepped holes and are matched with a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly (shown in figures 28 and 29) for use.
The third structure form of the connection of the automatic concentric positioning anti-loose flange component is that the bolt hole of the flange is a step hole and is matched with a locking sleeve type automatic concentric positioning anti-loose safety bolt component (shown in figures 28 and 29) for use, and the locking sleeve type automatic concentric positioning anti-loose safety bolt component comprises a bolt 4, a nut 5, an elastic element 6, a flat washer 7, a concentric locking sleeve 8 and a conical surface embedding sleeve 9. During operation, the conical surface embedding sleeve 9 of the bolt assembly is firstly embedded into the stepped hole of the bolt hole in an interference manner. The functional principle of the flanged connection with seal is the same as in example 1, and the functional principle of the flanged connection without seal is the same as in example 2.
The above 3 embodiments describe two structural forms of the connecting flange of the self-centering anti-loose safety bolt assembly, one structural form is a connecting form that the stud bolts (figures 26 and 28) clamp two flanges oppositely. Another type of fastener connecting flange is a single-head bolt connecting type, i.e. a single-head bolt (fig. 27 and 29) is used for screwing a flange into a screw hole of the other flange to be butted with the two flanges.
Claims (7)
1. An automatic concentric positioning anti-loose flange component is characterized in that a first structural form of the flange is an inner conical surface flange, a bolt hole of the flange is processed with an inner conical surface with conicity, namely, the automatic concentric positioning anti-loose flange (1) with the inner conical surface (figures 18 and 19) is connected with a locking sleeve type automatic concentric positioning anti-loose safety bolt component which is a double-headed bolt without an embedding sleeve (figure 26) and a single-headed bolt (figure 27) in a combined mode; the automatic concentric positioning anti-loosening flange (1) with the inner conical surface at two ends and the automatic concentric positioning anti-loosening companion flange (2) with the inner conical surface are connected with a pipeline or equipment; the flange sealing gasket (3) is arranged between the sealing end surfaces of the two flanges, bolt holes which are symmetrically distributed and equally distributed by using the centers of the flanges are arranged on the flanges, an inner conical surface with taper is processed in each bolt hole of the flange, and a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly which is provided with a bolt (4), a nut (5), an elastic element (6), a flat washer (7) and a concentric locking sleeve (8) is respectively assembled and fastened without an embedded sleeve; the structural form is a connecting form (figures 1 and 2) that the stud bolts oppositely clamp two flanges.
2. An automatic concentric positioning anti-loose flange assembly according to claim 1, characterized in that the flanges are connected and fastened in the following way:
after flange bolt holes at two ends are aligned, a flange sealing gasket is placed on the sealing end face of the flange, bolts (4) penetrate through flanges at two ends, a concentric locking sleeve (8) and a nut (5) are installed for fastening, it is determined that the concentric locking sleeve (8) is not clamped on the edge of the bolt hole, then the concentric locking sleeve (8) of a bolt assembly (shown in figures 26 and 27) is in conical fit with the bolt hole of the automatic concentric positioning anti-loosening flange (1) with the inner conical surface, the nut (5) is fastened at the same time, the conical surface of the concentric locking sleeve (8) moves along the conical surface of the bolt hole of the automatic concentric positioning anti-loosening flange (1) with the inner conical surface, concentricity is automatically corrected through taper, automatic axial concentricity and radial rotation concentricity of the flanges at two ends are formed, the concentric locking sleeve (8) shrinks inwards through taper fit and forms gapless fit with the bolts (4), so that the taper wedges are integrated to realize axial looseness prevention and dislocation prevention of the flanges, automatic correction concentricity of the bolt holes corresponding to the flanges at two ends is realized, and gapless axial and radial looseness prevention structures are realized.
3. An automatic concentric positioning anti-loose flange component is characterized in that the second structural form is a conical surface embedding sleeve flange, a bolt hole of the flange is a stepped hole and is embedded with a conical surface embedding sleeve, and the conical surface embedding sleeve (9) is provided with an inner conical surface, namely, the automatic concentric positioning anti-loose flange (21) with the conical surface embedding sleeve (figures 20 and 21) is matched and connected with a locking sleeve type automatic concentric positioning anti-loose safety bolt component without an embedding sleeve (figures 26 and 27); the flange connection structure (fig. 5, 6, 7 and 8) has two end flanges, namely an automatic concentric positioning anti-loose flange (21) with a conical surface embedding sleeve and an automatic concentric positioning anti-loose mating flange (22) with a conical surface embedding sleeve, which are connected with equipment or parts, and the flanges are provided with end surfaces or tapered matching surfaces for correction of concentricity and coaxiality; the flange is provided with bolt holes which are symmetrically distributed and equally distributed by taking the center of the flange as a stepped hole, a conical surface embedding sleeve (9) is embedded in the bolt holes of the flange, the conical surface embedding sleeve (9) is provided with an inner conical surface, and the locking sleeve type automatic concentric positioning anti-loose safety bolt assembly which is composed of a plurality of groups of bolts (4), nuts (5), elastic elements (6), flat washers (7) and concentric locking sleeves (8) is used for fastening without an embedding sleeve; the structural form is a connection form (figures 5 and 6) that the stud bolts oppositely clamp two flanges.
4. An automatic concentric positioning anti-loose flange assembly according to claim 3, characterized in that the flanges are connected and fastened in the following way: after the flange bolt holes at two ends are aligned, when the flanges are butted, the bolt 4 penetrates through the flanges at two ends, a concentric locking sleeve (8) is installed, a nut (5) is fastened, the concentric locking sleeve (8) is confirmed not to be clamped at the edge of the bolt hole, the locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly is a concentric locking sleeve 8 without an embedding sleeve (figures 26 and 27) and a bolt hole conical surface matching of an automatic concentric positioning anti-loosening flange (21) with a conical surface embedding sleeve, the nut (5) is fastened, the conical surface of the concentric locking sleeve (8) moves along the bolt hole conical surface of the automatic concentric positioning anti-loosening flange (21) with the conical surface embedding sleeve, the concentric automatic axial concentric and radial rotation of the flanges at two ends are automatically corrected to be concentric through conical degree, the concentric locking sleeve (8) is inwards shrunk through the conical degree matching, the concentric locking sleeve (4) forms gapless matching with the bolt, and the conical wedge is integrated to realize the axial and radial anti-loosening and anti-dislocation of the flange, and realize the automatic correction concentric and gapless bolt hole and gapless anti-loosening structure corresponding to the flanges at two ends.
5. An automatic concentric positioning anti-loose flange component according to claim 4, characterized in that the flange connection is combined in a way that the bolt holes of the flange are stepped holes embedded with conical surface embedding sleeves (9), the conical surface embedding sleeves (9) are provided with inner conical surfaces, namely, the automatic concentric positioning anti-loose flange (21) with the conical surface embedding sleeves is matched and connected with a locking sleeve type automatic concentric positioning anti-loose safety bolt component which is not provided with the embedding sleeves (figures 26 and 27).
6. An automatic concentric positioning anti-loose flange assembly is characterized in that the third structural form is a stepped hole flange, and a bolt hole of the flange is a stepped hole, namely, the flange (11) (figures 22 and 23) with the stepped hole is matched and connected with a locking sleeve type automatic concentric positioning anti-loose safety bolt assembly (figures 28 and 29); the locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly comprises a bolt (4), a nut (5), an elastic element (6), a flat washer (7), a concentric locking sleeve (8) and a conical surface embedding sleeve (9).
7. An automatic concentric positioning anti-loose flange assembly according to claim 6, characterized in that the flanges are connected and fastened in the following way: firstly, a conical surface embedding sleeve (9) of a locking sleeve type automatic concentric positioning anti-loosening safety bolt assembly is embedded into a stepped hole of a bolt hole in an interference manner; the structure form of the fastener connecting flange is a single-head bolt connecting form, namely, a single-head bolt is used for screwing one flange into a screw hole of the other flange through threads to butt against the two flanges (figures 11 and 12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211440484.2A CN115807885A (en) | 2022-11-17 | 2022-11-17 | Automatic concentric positioning anti-loosening flange assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211440484.2A CN115807885A (en) | 2022-11-17 | 2022-11-17 | Automatic concentric positioning anti-loosening flange assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115807885A true CN115807885A (en) | 2023-03-17 |
Family
ID=85483406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211440484.2A Pending CN115807885A (en) | 2022-11-17 | 2022-11-17 | Automatic concentric positioning anti-loosening flange assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115807885A (en) |
-
2022
- 2022-11-17 CN CN202211440484.2A patent/CN115807885A/en active Pending
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