CN216620803U - Flange connection limiting sealing structure - Google Patents

Flange connection limiting sealing structure Download PDF

Info

Publication number
CN216620803U
CN216620803U CN202122876324.XU CN202122876324U CN216620803U CN 216620803 U CN216620803 U CN 216620803U CN 202122876324 U CN202122876324 U CN 202122876324U CN 216620803 U CN216620803 U CN 216620803U
Authority
CN
China
Prior art keywords
limiting
smaller
sealing gasket
bolt hole
larger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202122876324.XU
Other languages
Chinese (zh)
Inventor
南相徹
刘凯
郑求立
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Air Conditioning Shandong Co Ltd
Original Assignee
LG Electronics Air Conditioning Shandong Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Air Conditioning Shandong Co Ltd filed Critical LG Electronics Air Conditioning Shandong Co Ltd
Priority to CN202122876324.XU priority Critical patent/CN216620803U/en
Application granted granted Critical
Publication of CN216620803U publication Critical patent/CN216620803U/en
Priority to KR2020220002052U priority patent/KR20230001078U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
    • F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/08—Interconnections of wall parts; Sealing means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2590/00—Component parts, details or accessories for large containers
    • B65D2590/02—Wall construction
    • B65D2590/023—Special coating or treatment of the internal surface

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Gasket Seals (AREA)

Abstract

The utility model relates to the field of heat exchangers, in particular to a flange connection limiting and sealing structure. The sealing gasket is arranged along the inner side edge of the water tank flange and is formed by splicing a plurality of splicing gaskets, one end of each splicing gasket is provided with a bulge, the other end of each splicing gasket is provided with a groove corresponding to the bulge in shape, the bulges are clamped in the grooves, and the splicing gaskets are connected end to form an annular closed sealing gasket; and a plurality of limiting parts are arranged at intervals along the outer edge of the water tank flange, and the limiting parts are positioned on the annular outer side of the sealing gasket. The manufacturing cost of the sealing gasket is low, the sealing gasket damage failure caused by excessive bolt tightening is effectively prevented, and the durability of the sealing gasket and the reliability of the flange are improved.

Description

Flange connection limiting sealing structure
Technical Field
The utility model relates to the field of heat exchangers, in particular to a flange connection limiting and sealing structure.
Background
In the conventional shell-and-tube heat exchanger, a water tank structure is generally used to clean the inner surface of the heat exchange tube. The water tank is in order to reach and dismantle convenient and sealed good effect, adopts rubber gasket and bolt-up's mode to install and connect more, through bolt 2 and nut 3 fixed connection between water tank flange and the head flange 1, is equipped with built-in seal gasket 4 between water tank flange and the head flange 1, and seal gasket 4 has played the sealed effect, prevents that the water tank from leaking.
The water tank with the existing structure has the following defects: firstly, the existing sealing gasket mostly adopts a whole annular gasket, and along with the increase of the size of a heat exchanger, when the sealing gasket is manufactured, a rubber plate with the same size as the heat exchanger needs to be used for cutting, so that the production cost of the sealing gasket is greatly improved; secondly, because bolted connection uses electric spanner or air wrench fastening more, hardly ensures the fastening dynamics of bolt: the sealing gasket is damaged and loses efficacy due to overlarge fastening force, and meanwhile, the deformation of the sealing head flange is easily caused; the fastening force is insufficient, which results in insufficient tightness of the water tank. Both of the above conditions may cause water leakage from the water tank.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a flange connection limiting sealing structure, which has low manufacturing cost of a sealing gasket, effectively prevents the sealing gasket from being damaged and failed due to over-tightening of bolts, and improves the durability of the sealing gasket and the reliability of a flange.
The technical scheme of the utility model is as follows: a flange connection limiting sealing structure comprises a sealing gasket and a limiting part which are positioned between two flanges, wherein the sealing gasket is arranged along the inner side edge of a water tank flange and is formed by splicing a plurality of spliced gaskets, one end of each spliced gasket is provided with a bulge, the other end of each spliced gasket is provided with a groove corresponding to the bulge in shape, the bulges are clamped in the grooves, and the spliced gaskets are connected end to form an annular closed sealing gasket;
and a plurality of limiting parts are arranged at intervals along the outer edge of the water tank flange, and the limiting parts are positioned on the annular outer side of the sealing gasket.
In the utility model, the shape of the protrusion and the groove can be a dovetail shape, a T shape and the like, so long as the protrusion can be ensured to be clamped in the groove and can not fall off from the groove.
When the water seal flange is quadrilateral, the sealing gasket is formed by splicing four splicing gaskets which are respectively positioned on four sides of the water tank flange in parallel.
At this time, the limiting part can comprise L-shaped limiting blocks and limiting plates, wherein the L-shaped limiting blocks are respectively positioned at four corners of the water tank flange, each limiting plate comprises a long-strip-shaped limiting strip and a plurality of limiting teeth arranged on the limiting strip at intervals, the limiting strips are arranged along the outer edge of the water tank flange, the limiting teeth are positioned between every two adjacent bolt holes, the limiting teeth and the limiting strips are of an integrated structure, and each limiting plate comprises 1-5 limiting teeth;
the number of the limiting teeth on the limiting plate is n, the length A of the limiting plate is larger than (n-1) times of bolt hole interval and smaller than 2(n +1) times of threaded hole interval, the width B of the limiting plate is larger than 3mm and smaller than (width of a water tank flange-width of a sealing gasket)/2 ], the thickness of the limiting plate is larger than 0.4 times of thickness of the sealing gasket and smaller than 0.9 times of thickness of the sealing gasket, the length D of the limiting teeth is larger than 3mm and smaller than (1 time of bolt hole interval-bolt hole outer diameter), and the interval E between every two adjacent limiting teeth is larger than the bolt hole outer diameter and smaller than (4 times of bolt hole interval-bolt hole outer diameter-2X D).
The limiting part can also comprise L-shaped limiting blocks and limiting blocks, wherein the L-shaped limiting blocks are positioned at four corners of the water tank flange, and the limiting blocks are positioned between two adjacent bolt holes;
the size of the limiting block in the direction parallel to the side edge of the water tank flange is larger than 3mm and smaller than 1 time of bolt hole distance, the size of the limiting block in the direction perpendicular to the side edge of the water tank flange is larger than 3mm and smaller than [ width of the water tank flange-width of the sealing gasket ]/2 ], and the thickness of the limiting block is larger than 0.4 time of thickness of the sealing gasket and smaller than 0.9 time of thickness of the sealing gasket.
The limiting part can also comprise an L-shaped limiting block and a limiting ring, wherein the L-shaped limiting block is positioned at the corners of the four corners of the water seal flange, the middle part of the limiting ring is provided with a strip-shaped hole, and the limiting ring surrounds the outer sides of the bolt holes;
the limiting ring is arranged around the outer side of the m bolt holes, the length F of the limiting ring is larger than (m-1) times of bolt hole linear interval and bolt hole outer diameter and is smaller than (2 (m +1) times of bolt hole interval and bolt hole outer diameter, the length G of the long strip hole in the limiting ring is larger than (m-1) times of bolt hole linear interval and bolt hole outer diameter and is smaller than F, the width H of the limiting ring is larger than the bolt hole outer diameter and is smaller than (water tank flange width-sealing gasket width)/2 ], the width I of the long strip hole in the limiting ring is larger than the bolt hole outer diameter and is smaller than H, and the thickness of the limiting ring is larger than 0.4 times of sealing gasket thickness and is smaller than 0.9 times of sealing gasket thickness.
The length of the single side of the L-shaped limiting block is larger than 3mm and smaller than 8 times of the bolt hole interval, the width of the L-shaped limiting block 11 is 2-30mm, and the thickness of the L-shaped limiting block is the same as that of the limiting plate, the square limiting block or the limiting ring.
When the water seal flange is circular, the sealing gasket is formed by splicing a plurality of arc splicing gaskets.
At this time, the limiting part can comprise a plurality of arc limiting plates arranged along the circumferential edge of the outer side of the water sealing flange, each limiting plate comprises an arc limiting strip and a plurality of limiting teeth arranged on the arc limiting strip at intervals, the limiting teeth are positioned between two adjacent bolt holes, the limiting teeth and the arc limiting strips are of an integrated structure, and 1-5 limiting teeth are arranged on each limiting plate;
the number of limiting teeth on the limiting plate is N, the arc length J of the limiting plate is larger than (N-1) times of bolt hole linear distance on a graduated circle and smaller than 2(N +1) times of threaded hole linear distance on the graduated circle, the width K of the limiting plate is larger than 3mm and smaller than (water tank flange outer diameter-sealing gasket outer diameter)/2 ], the thickness of the limiting plate is larger than 0.4 times of sealing gasket thickness and smaller than 0.9 times of sealing gasket thickness, the length M of the limiting teeth is larger than 3mm and smaller than (1 time of bolt hole linear distance-bolt hole outer diameter on the graduated circle), and the distance N between every two adjacent limiting teeth is larger than the bolt hole outer diameter and smaller than (4 times of bolt hole linear distance-bolt hole outer diameter-2M on the graduated circle).
The limiting part can also comprise a plurality of limiting blocks, the limiting blocks are positioned between two adjacent bolt holes, the length of the limiting blocks along the circumferential direction of the water tank flange is greater than 3mm and smaller than 1 time of the linear distance of the bolt holes on the graduated circle, the width of the limiting blocks along the radial direction of the water tank flange is greater than 3mm and smaller than [ outer diameter of the water tank flange-outer diameter of the sealing gasket ]/2 ], and the thickness of the limiting blocks is greater than 0.4 time of the thickness of the sealing gasket and smaller than 0.9 time of the thickness of the sealing gasket.
The limiting part can also comprise a plurality of arc-shaped limiting rings which are arranged at intervals along the circumferential edge of the outer side of the water tank flange, the middle part of the limiting ring 14 is provided with an arc-shaped hole, and the limiting rings surround the outer sides of the bolt holes;
the limiting ring is arranged to surround the outer sides of the m bolts, the arc length P of the limiting ring is larger than (m-1) times bolt hole linear distance + bolt hole outer diameter) on a graduated circle and smaller than (2 (m +1) times bolt hole linear distance-bolt hole outer diameter) on the graduated circle, the length Q of the arc hole in the limiting ring is larger than (m-1) times bolt hole linear distance + bolt hole outer diameter on the graduated circle and smaller than P, the width R of the limiting ring is larger than the bolt hole outer diameter and smaller than (water tank flange outer diameter-sealing gasket outer diameter)/2), the width S of the arc hole in the limiting ring is larger than the bolt hole outer diameter and smaller than R, and the thickness of the limiting ring is larger than 0.4 times sealing gasket and smaller than 0.9 times sealing gasket.
The utility model has the beneficial effects that:
(1) the sealing gasket plays a role in sealing the water tank flange and the end socket flange, effectively prevents the leakage of the water tank, is formed by splicing a plurality of strip-shaped splicing gaskets, realizes the full utilization of an original material plate, and greatly reduces the manufacturing cost of the sealing gasket;
(2) play the limited action through spacing portion to the clearance between water tank flange and the head flange, interval lower limit between control water tank flange and the vertical head flange, make clearance department between water tank flange and the head flange equal, can be more than 60% with the deflection effective control of seal gasket in bolt-up process, prevent that the seal gasket from appearing permanent deformation inefficacy and leading to the junction of water tank flange and head flange to leak, the durability that seal gasket used has been improved, can not cause the deformation of water tank flange and head flange, thereby the reliability of water tank flange and head flange has been improved, the service life of water tank flange and head flange has been prolonged.
Drawings
FIG. 1 is a front view of a conventional water tank flange and head flange joint;
FIG. 2 is a schematic front view of a flange connection limit sealing structure in embodiment 1;
FIG. 3 is a partially enlarged view of the clamping position of two adjacent splicing gaskets in embodiment 1;
fig. 4 is a schematic structural view of a limiting plate in embodiment 1;
FIG. 5 is a schematic front view of a flange connection limit seal structure in embodiment 2;
FIG. 6 is a schematic front view of a flange connection limit seal structure in embodiment 3;
FIG. 7 is a schematic front view of a flange connection limit seal structure in embodiment 4;
FIG. 8 is a schematic front view of a flange connection limit seal structure in embodiment 5;
fig. 9 is a front view structural schematic diagram of the flange connection limit sealing structure in embodiment 6.
In the figure: 1, sealing a flange; 2, bolts; 3, a nut; 4, sealing gasket; 5, a water tank flange; 7 splicing the gasket I; 8, splicing a gasket II; 9 splicing a gasket III; 10 splicing a gasket IV; 11L-shaped limiting blocks; 12 a limiting plate; 1201 a limit bar; 1202 limit teeth; 1203 arc-shaped limiting strips; 13 a square limiting block; 14 stop collar.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The utility model can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the utility model. Therefore, the present invention is not limited to the specific embodiments disclosed below.
The flange connection limiting sealing structure comprises a sealing gasket and a limiting part which are positioned between two flanges, wherein the sealing gasket is arranged along the inner side edges of a water tank flange and a sealing head flange, the sealing gasket is formed by splicing a plurality of spliced gaskets, and the spliced gaskets are connected end to form an annular sealed sealing gasket.
One end of the splicing gasket is provided with a protrusion, the other end of the splicing gasket is provided with a groove corresponding to the protrusion, the protrusion at one end of the gasket is clamped in the groove of the splicing gasket adjacent to the protrusion, and the groove at the other end of the splicing gasket is fixedly connected with the protrusion of the other splicing gasket adjacent to the groove in a clamping manner, so that connection between two adjacent splicing gaskets is realized. The shape of the bulge can be dovetail, T-shaped and the like, as long as the bulge can be clamped in the groove and cannot fall off from the groove.
The spacing portion that is equipped with the several along the outside edge interval of flange, spacing portion are located seal gasket's annular outside, through setting up spacing portion, have guaranteed that the clearance department between water tank flange and the head flange equals.
In the installation process of the flange connection limiting and sealing structure, the sealing gasket and the limiting part are firstly fixed on the water tank flange in a sticking mode, and then bolts of all bolt holes are screwed. Along with the fastening of bolt, seal gasket between water tank flange and the head flange reaches sealed effect through the extrusion, when clearance between water tank flange and the head flange reduces to the thickness of spacing portion along with the increase of bolt-up dynamics, even rotatory fastening bolt again, this moment because the effect of spacing portion, interval between water tank flange and the head flange can not continue to reduce, the clearance department of having guaranteed between water tank flange and the head flange equals, the risk that excessive fastening leads to seal gasket inefficacy to damage has been avoided, and the deformation of head flange.
Example 1
As shown in fig. 2 to 4, the flange connection limiting and sealing structure is applied to the connection part of the water tank flange and the end socket flange, the water tank flange and the end socket flange are fixedly connected through a plurality of bolts and nuts matched with the bolts, and the bolts are uniformly arranged along the peripheral edge of the water tank flange at intervals. When water seal flange 5 and head flange are the quadrangle, because seal gasket sets up along the inboard edge of water seal flange and head flange, the seal gasket that consequently each concatenation gasket head and the tail concatenation formed is the quadrangle, and seal gasket in this embodiment is spliced by four concatenation gaskets that are located and are on a parallel with four sides of water tank flange 5 respectively and is constituteed, including concatenation gasket I7, concatenation gasket II 8, concatenation gasket III 9 and concatenation gasket IV 10. The tip of concatenation gasket I7 is equipped with T type arch, and the tip of the splicing gasket II 8 that corresponds is equipped with T type recess, and protruding card is established in the recess to the fixed connection between concatenation gasket I7 and the splicing gasket II 8 has been realized. The adjacent splicing gaskets are connected with the adjacent splicing gaskets through the bulges and the grooves at the end parts of the splicing gaskets, and the four splicing gaskets are connected end to end, so that an annular closed sealing gasket is formed.
Spacing portion is located the annular outside of seal gasket, in this embodiment, spacing portion includes L shape stopper 11 and limiting plate 12, wherein L shape stopper 11 is located four edges of water tank flange 5 respectively, limiting plate 12 includes banding spacing 1201 and the spacing tooth 1202 of several that sets up at the interval on spacing, spacing 1201 sets up along the outside edge of water tank flange 5, spacing tooth 1202 is located between two adjacent bolt holes, be the integral type structure between spacing tooth 1202 and the spacing 1201, every limiting plate 12 includes 1-5 spacing tooth 1202.
In this embodiment, every side of water tank flange 5 all is equipped with two limiting plates 12, and in this application, the limiting plate that every side of water tank flange set up is not limited to two in this embodiment, also can set up more quantity, in the in-service use process, needs select the quantity of the limiting plate of chooseing for use according to the specific size of water tank flange 5. In order to improve the universality of the limiting plate 12, the number of the limiting teeth 1202 on the limiting plate 12 is n, the length A of the limiting plate 12 is larger than (n-1) times of bolt hole interval and smaller than 2(n +1) times of threaded hole interval, the width B of the limiting plate 12 is larger than 3mm and smaller than (water tank flange width-sealing gasket width)/2 ], the thickness C of the limiting plate 12 is larger than 0.4 times of sealing gasket thickness and smaller than 0.9 times of sealing gasket thickness, the length of the limiting teeth 1202 is larger than 3mm along the dimension D parallel to the side edge direction of the water tank flange and smaller than (1 time of bolt hole interval-bolt hole outer diameter), and the interval E between two adjacent limiting teeth 1202 is larger than the bolt hole outer diameter and smaller than (4 times of bolt hole interval-bolt hole outer diameter-2X D). The length of the single side of the L-shaped limiting block 11 is larger than 3mm and smaller than 8 times of the bolt hole interval, the width of the L-shaped limiting block 11 is 2-30mm, and the thickness of the L-shaped limiting block 11 is the same as that of the limiting plate 12.
The spacing part limits the gap between the water tank flange 5 and the end socket flange, so that the gap between the water tank flange 5 and the end socket flange is equal everywhere.
Example 2
The difference from example 1 is: as shown in fig. 5, the limiting portion in this embodiment includes an L-shaped limiting block 11 and a square limiting block 13, where the L-shaped limiting block 11 is located at four corners of the water tank flange 5, and the square limiting block 13 is located between two adjacent bolt holes. In order to improve the universality of the square limiting block 13, the length of the square limiting block 13, namely the size parallel to the side direction of the water tank flange, is larger than 3mm and smaller than 1 time of bolt hole distance, the width of the square limiting block 13, namely the size perpendicular to the side direction of the water tank flange, is larger than 3mm and smaller than [ the width of the water tank flange-the width of a sealing gasket ]/2 ], and the thickness of the square limiting block 13 is larger than 0.4 time of the thickness of the sealing gasket and smaller than 0.9 time of the thickness of the sealing gasket.
In this application, the shape of the limiting block is not limited to the square shape in this embodiment, and may also be a circle, a quadrangle, a polygon, or other shapes.
The rest is the same as example 1.
Example 3
The difference from example 1 is: as shown in fig. 6, the limiting portion in this embodiment includes an L-shaped limiting block 11 and a limiting ring 14, wherein the L-shaped limiting block 11 is located at four corners of the water sealing flange 5, the limiting ring 14 surrounds the outer sides of the plurality of bolt holes, i.e., the middle portion of the limiting ring 14 is provided with a strip-shaped hole, and the plurality of bolts are located in the strip-shaped hole. In order to improve the universality of the limiting ring 14, the limiting ring 14 surrounds the outer sides of 1-5 bolts. The limiting ring 14 is arranged to surround the outer sides of the m bolt holes, the length F of the limiting ring 14 is larger than (m-1) times of the linear distance between the bolt holes and the bolt hole outer diameter and smaller than (2 (m +1) times of the distance between the bolt holes and the bolt hole outer diameter), the length G of a long strip hole in the limiting ring 14 is larger than (m-1) times of the linear distance between the bolt holes and the bolt hole outer diameter and smaller than F, the width H of the limiting ring 14 is larger than the bolt hole outer diameter and smaller than (width of a water tank flange and width of a sealing gasket)/2), the width I of the long strip hole in the limiting ring 14 is larger than the bolt hole outer diameter and smaller than H, and the thickness of the limiting ring 14 is larger than 0.4 times of the thickness of the sealing gasket and smaller than 0.9 times of the thickness of the sealing gasket.
The rest is the same as example 1.
Example 4
Different from the embodiment 1, as shown in fig. 7, the water seal flange 5 and the head flange are circular, so the sealing gasket is circular, the sealing gasket 4 in this embodiment is formed by splicing four arc-shaped splicing gaskets, and the central angle of each splicing gasket is 90 °.
The spacing portion in this embodiment includes several limiting plate 12 that the several sets up along the circumferential edge reason outside the water seal flange, and limiting plate 12 is the arc, and limiting plate 12 includes the spacing strip 1203 of arc and the spacing tooth 1202 of several that the interval set up on the spacing strip of arc, and spacing tooth 1202 is located between two adjacent bolt holes, is the integral type structure between spacing tooth 1202 and the spacing strip 1203 of arc, is equipped with 1-5 spacing tooth 1202 on every spacing strip 1203 of arc.
In order to improve the universality of the limiting plate 12, the number of the limiting teeth 1202 on the arc-shaped limiting plate 12 is N, the arc-shaped length J of the limiting plate 12 is larger than (N-1) times of the linear interval of the bolt holes on the graduated circle and smaller than 2(N +1) times of the linear interval of the threaded holes on the graduated circle, the width K of the limiting plate 12 is larger than 3mm and smaller than [ water tank flange outer diameter-sealing gasket outer diameter ]/2 ], the thickness of the limiting plate 12 is larger than 0.4 times of the thickness of the sealing gasket and smaller than 0.9 times of the thickness of the sealing gasket, the length M of the limiting tooth 1202 is larger than 3mm and smaller than (1 time of the linear interval of the bolt holes on the graduated circle-bolt hole outer diameter), and the interval N between two adjacent limiting teeth 1202 is larger than the bolt hole outer diameter and smaller than (4 times of the linear interval of the bolt holes on the graduated circle-bolt hole outer diameter-2M).
The rest was the same as in example 1.
Example 5
Different from embodiment 4, as shown in fig. 8, the limiting portion in this embodiment includes a plurality of square limiting blocks 13, and the square limiting blocks 13 are located between two adjacent bolts. In order to improve the universality of the square limiting block 13, the length of the square limiting block 13 in the circumferential direction of the water tank flange is greater than 3mm and smaller than 1 time of the linear distance of the bolt holes on the graduated circle, the width of the square limiting block 13 in the radial direction of the water tank flange is greater than 3mm and smaller than [ outer diameter of the water tank flange-outer diameter of the sealing gasket ]/2 ], and the thickness of the square limiting block 13 is greater than 0.4 time of the thickness of the sealing gasket and smaller than 0.9 time of the thickness of the sealing gasket.
The rest was the same as example 4.
Example 6
The difference from example 1 is: as shown in fig. 9, the limiting portion of the present embodiment includes a limiting ring 14, and the limiting ring 14 is disposed at intervals along the circumferential edge of the outside of the water tank flange. The limiting ring 14 surrounds the outer sides of the bolts, that is, the middle of the limiting ring 14 is provided with an arc-shaped hole, and the bolts are located in the arc-shaped hole. In order to improve the universality of the limiting ring 14, the limiting ring 14 surrounds the outer sides of 1-5 bolts. The limiting ring 14 is arranged to surround the outer sides of the m bolts, the arc length P of the limiting ring 14 is larger than (m-1) times of bolt hole linear distance + bolt hole outer diameter) on a graduated circle and smaller than (2 (m +1) times of bolt hole linear distance-bolt hole outer diameter) on the graduated circle, the length Q of an arc hole in the limiting ring 14 is larger than (m-1) times of bolt hole linear distance + bolt hole outer diameter) on the graduated circle and smaller than P, the width R of the limiting ring 14 is larger than the bolt hole outer diameter and smaller than (water tank flange outer diameter-sealing gasket outer diameter)/2 ], the width S of the arc hole in the limiting ring 14 is larger than the bolt hole outer diameter and smaller than R, and the thickness of the limiting ring 14 is larger than 0.4 times of sealing gasket and smaller than 0.9 times of sealing gasket thickness.
The rest is the same as example 4.
The flange connection limiting and sealing structure provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a spacing seal structure of flange joint which characterized in that: the sealing gasket is arranged along the inner side edge of the water tank flange and is formed by splicing a plurality of splicing gaskets, one end of each splicing gasket is provided with a bulge, the other end of each splicing gasket is provided with a groove corresponding to the bulge in shape, the bulges are clamped in the grooves, and the splicing gaskets are connected end to form an annular closed sealing gasket;
and a plurality of limiting parts are arranged at intervals along the outer edge of the water tank flange, and the limiting parts are positioned on the annular outer side of the sealing gasket.
2. The flange connection limit seal structure of claim 1, wherein: the shape of the protrusion and the groove is in a dovetail shape or a T shape.
3. The flange connection limit seal structure of claim 1, wherein: when the water seal flange is quadrilateral, the sealing gasket is formed by splicing four splicing gaskets which are respectively positioned on four sides of the water tank flange in parallel.
4. The flange connection limit seal structure of claim 3, wherein: the limiting part comprises L-shaped limiting blocks and limiting plates, the L-shaped limiting blocks are respectively positioned at four corners of the water tank flange, each limiting plate comprises a long-strip-shaped limiting strip and a plurality of limiting teeth arranged on the limiting strip at intervals, the limiting strips are arranged along the outer edge of the water tank flange, the limiting teeth are positioned between every two adjacent bolt holes, the limiting teeth and the limiting strips are of an integrated structure, and each limiting plate comprises 1-5 limiting teeth;
the number of the limiting teeth on the limiting plate is n, the length A of the limiting plate is larger than (n-1) times of bolt hole interval and smaller than 2(n +1) times of threaded hole interval, the width B of the limiting plate is larger than 3mm and smaller than (width of a water tank flange-width of a sealing gasket)/2 ], the thickness of the limiting plate is larger than 0.4 times of thickness of the sealing gasket and smaller than 0.9 times of thickness of the sealing gasket, the length D of the limiting teeth is larger than 3mm and smaller than (1 time of bolt hole interval-bolt hole outer diameter), and the interval E between every two adjacent limiting teeth is larger than the bolt hole outer diameter and smaller than (4 times of bolt hole interval-bolt hole outer diameter-2X D).
5. The flange connection limit seal structure of claim 3, wherein: the limiting part comprises L-shaped limiting blocks and limiting blocks, wherein the L-shaped limiting blocks are positioned at four corners of the water tank flange, and the limiting blocks are positioned between two adjacent bolt holes;
the size of the limiting block in the direction parallel to the side edge of the water tank flange is larger than 3mm and smaller than 1 time of bolt hole distance, the size of the limiting block in the direction perpendicular to the side edge of the water tank flange is larger than 3mm and smaller than [ width of the water tank flange-width of the sealing gasket ]/2 ], and the thickness of the limiting block is larger than 0.4 time of thickness of the sealing gasket and smaller than 0.9 time of thickness of the sealing gasket.
6. The flange connection limit seal structure of claim 1, wherein: the limiting part comprises an L-shaped limiting block and a limiting ring, wherein the L-shaped limiting block is positioned at the four corner positions of the water seal flange, the middle part of the limiting ring is provided with a strip-shaped hole, and the limiting ring surrounds the outer sides of the bolt holes;
the limiting ring is arranged around the outer side of the m bolt holes, the length F of the limiting ring is larger than (m-1) times of bolt hole linear interval and bolt hole outer diameter and is smaller than (2 (m +1) times of bolt hole interval and bolt hole outer diameter, the length G of the long strip hole in the limiting ring is larger than (m-1) times of bolt hole linear interval and bolt hole outer diameter and is smaller than F, the width H of the limiting ring is larger than the bolt hole outer diameter and is smaller than (water tank flange width-sealing gasket width)/2 ], the width I of the long strip hole in the limiting ring is larger than the bolt hole outer diameter and is smaller than H, and the thickness of the limiting ring is larger than 0.4 times of sealing gasket thickness and is smaller than 0.9 times of sealing gasket thickness.
7. The flange connection limit seal structure of claim 1, wherein: when the water seal flange is circular, the sealing gasket is formed by splicing a plurality of arc splicing gaskets.
8. The flange connection limit seal structure of claim 7, wherein: the limiting part comprises a plurality of arc limiting plates arranged along the circumferential edge of the outer side of the water seal flange, each limiting plate comprises an arc limiting strip and a plurality of limiting teeth arranged on the arc limiting strip at intervals, the limiting teeth are positioned between every two adjacent bolt holes, the limiting teeth and the arc limiting strips are of an integrated structure, and 1-5 limiting teeth are arranged on the limiting plates;
the number of limiting teeth on the limiting plate is N, the arc length J of the limiting plate is larger than (N-1) times of bolt hole linear distance on a graduated circle and smaller than 2(N +1) times of threaded hole linear distance on the graduated circle, the width K of the limiting plate is larger than 3mm and smaller than (water tank flange outer diameter-sealing gasket outer diameter)/2 ], the thickness of the limiting plate is larger than 0.4 times of sealing gasket thickness and smaller than 0.9 times of sealing gasket thickness, the length M of the limiting teeth is larger than 3mm and smaller than (1 time of bolt hole linear distance-bolt hole outer diameter on the graduated circle), and the distance N between every two adjacent limiting teeth is larger than the bolt hole outer diameter and smaller than (4 times of bolt hole linear distance-bolt hole outer diameter-2M on the graduated circle).
9. The flange connection limit sealing structure of claim 7, wherein: the limiting part comprises a plurality of limiting blocks, and the limiting blocks are positioned between two adjacent bolt holes;
the length of the limiting block along the circumferential direction of the water tank flange is larger than 3mm and smaller than 1 time of linear distance of the bolt holes on the graduated circle, the width of the limiting block along the radial direction of the water tank flange is larger than 3mm and smaller than [ outer diameter of the water tank flange-outer diameter of the sealing gasket ]/2 ], and the thickness of the limiting block is larger than 0.4 time of the thickness of the sealing gasket and smaller than 0.9 time of the thickness of the sealing gasket.
10. The flange connection limit seal structure of claim 7, wherein: the limiting part comprises a plurality of arc-shaped limiting rings, the limiting rings are arranged at intervals along the circumferential edge of the outer side of the water tank flange, arc-shaped holes are formed in the middle of the limiting rings, and the limiting rings surround the outer sides of the bolt holes;
the limiting ring is arranged to surround the outer sides of the m bolts, the arc length P of the limiting ring is larger than (m-1) times bolt hole linear distance + bolt hole outer diameter) on a graduated circle and smaller than (2 (m +1) times bolt hole linear distance-bolt hole outer diameter) on the graduated circle, the length Q of an arc hole in the limiting ring is larger than (m-1) times bolt hole linear distance + bolt hole outer diameter on the graduated circle and smaller than P, the width R of the limiting ring is larger than the bolt hole outer diameter and smaller than (water tank flange outer diameter-sealing gasket outer diameter)/2), the width S of the arc hole in the limiting ring is larger than the bolt hole outer diameter and smaller than R, and the thickness of the limiting ring is larger than 0.4 times sealing gasket thickness and smaller than 0.9 times sealing gasket thickness.
CN202122876324.XU 2021-11-19 2021-11-19 Flange connection limiting sealing structure Active CN216620803U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202122876324.XU CN216620803U (en) 2021-11-19 2021-11-19 Flange connection limiting sealing structure
KR2020220002052U KR20230001078U (en) 2021-11-19 2022-08-22 Position-limited sealing structure with flanged connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122876324.XU CN216620803U (en) 2021-11-19 2021-11-19 Flange connection limiting sealing structure

Publications (1)

Publication Number Publication Date
CN216620803U true CN216620803U (en) 2022-05-27

Family

ID=81698284

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122876324.XU Active CN216620803U (en) 2021-11-19 2021-11-19 Flange connection limiting sealing structure

Country Status (2)

Country Link
KR (1) KR20230001078U (en)
CN (1) CN216620803U (en)

Also Published As

Publication number Publication date
KR20230001078U (en) 2023-05-26

Similar Documents

Publication Publication Date Title
CN211951823U (en) Anti-leakage type ground wax-proof, scale-proof and corrosion-proof device
CN216620803U (en) Flange connection limiting sealing structure
CN204202439U (en) A kind of Novel single tube journey floating head heat exchanger
CN218671024U (en) Stainless steel flange convenient to connect
CN210484919U (en) High temperature resistant clamp
CN220082115U (en) Automobile pressure reducing valve gasket
CN211371078U (en) Novel elastic pin coupling
CN202770279U (en) Plate heat exchanger
CN210773587U (en) Plate heat exchanger capable of preventing internal leakage
CN220582634U (en) Fresh air pipeline structure
CN211120828U (en) Heat exchanger end plate convenient to location installation
CN215060270U (en) Air pipe flange connecting structure
CN214501292U (en) Sealing structure and heat exchanger
CN219866238U (en) High-pressure multiple sealing structure and high-pressure cleaning machine
CN214248619U (en) Water supply pipe connecting structure
CN213871577U (en) Middle-low pressure self-sealing flange clamp
CN219242916U (en) Quick flange connecting device for rectangular square air pipe
CN212178243U (en) Compensation type heating power compensator repairing device
CN220416511U (en) Water supply steel pipe with water leakage prevention at spliced part
CN213236447U (en) Split type flange for municipal engineering line pipeline
CN220959746U (en) Heat exchanger convenient to seal and detect
KR200480413Y1 (en) Pipe joint structure
CN215979508U (en) Brush atmoseal of general type industrial gas turbine stationary blade
CN221762906U (en) Flange with good sealing performance
CN214368346U (en) Clamp pipe fitting that possesses many sizes and adjust

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant