TW498147B - Assembly of flange joint and gasket, sealing gasket and method for sealing a pipe joint - Google Patents

Abstract

A sealing gasket for insertion into a circumferentially continuous groove of a flange joint for joining axially aligned tube ends, the flange joint being of the type having axially opposed flanges at the tube ends to form a groove there between when the joint is assembled, the groove being formed by axially opposed seal faces and radial end faces of the flanges, the groove comprising a groove first portion that is open to an interior flow passage of the tubes and a groove second portion that extends radically outward from the groove first portion, the gasket having a gasket first portion that seals the groove first portion and a gasket second portion that extends from the gasket first portion and into the groove second portion; the gasket second portion being axially compressed when the joint is assembled and engaging with the radial end faces to produce a radial compression of the gasket; the gasket second portion having a volume that is less than volume of the groove second portion to form an expansion space in the groove second portion when the joint is assembled.

Description

A7 B7 V. Description of the invention (8Y) About pipe joints and couplings, especially flanged pipe joints: the use of the improved relationship between surface seals and related gaskets. 77 = earthen type & joints have flexibility Material gaskets, namely elastomers and plastics, are located between the opposite flanges i for sealing. These pipes are connected to sanitary treatment systems that cannot produce flow images. The two systems < pipelines usually have a 彳 angle Slope and use gravity to discharge. Therefore, due to the small angle Chiwon rate, it is necessary to limit the concentration of fluid in the region where the 滞 T hysteresis may occur. For example, we know the design of the gasket and related flanges to make the joint Upon completion, the radially inner surface of the gasket forms a smooth continuum between the inner surfaces of the connected joints. This type of joint is disclosed in patents Nos. 775,832 and 4,735,445 and German Patentschrifts CH 674764 A5 and 947,034. Ministry of Economic Affairs Printed by the Consumer Standards Cooperative of the Central Bureau of Standards (please read the notes on the back before filling out this page). We will propose various methods or designs to ensure that the gasket compression is exceeded or lowered. I will not happen. Nonetheless, we know that many gasket materials are squeezed into the flow path when the components are formed or the temperature of the fluid system rises. 'This is not what I want. The inner periphery of the gasket should not be Stretch into the circulation path because it is not conducive to the proper discharge of fluid from the system. Even if 疋; f, only a slight squeeze out of the fluid stagnation in the system, this is in a system that requires a high degree of cleanliness and / or Obvious and unknown problems in the convenience of scouring and changing fluids between different processes. SUMMARY OF THE INVENTION The present invention provides a pipe joint structure of the above type, which is designed to eliminate or significantly reduce the extrusion of gaskets and reduce The stagnation of fluid, and -4-This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) 498147 A7 B7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (2) Provided during assembly Improved alignment. According to the present invention, and especially in the above-mentioned type of pipe joint, there is a pair of axially aligned adjacent cylindrical pipe ends. Shaped inner surface 'and its opposite tube: fixed diameter of the mesh-annular continuous stacking groove, the groove is the first axial narrow portion defined by the face seal surface. Open to the relatively dense = inner surface. The groove The second one is == ^ Brother—the outside of the Shao position, and has a radially outer surface, which is radially overlapped and aligned. The soft material is 22:

: The diaphragm structure has a narrow part 'whose size can be completely filled:; L = two-the axially narrow part, and is joined to the axially opposite surface with sealing pressure. The size of the gasket < redundant second part can be extended into the second part of the stacking groove, and the inner radial dimension of the second part forms an interference connection with the pipe end for assembly, and has sufficient Weight in order to fix them in the alignment relationship in the joint composition. These structural features allow better alignment of the components in the fluid system to facilitate assembly. The gasket < second portion also has a radial dimension, which can be radially extended beyond the second portion of the stacking groove when the joining member is completed, and compressively engage with the radially outer surface. The axial width of the stacking groove is sufficient to provide the space required for the gasket to expand when the temperature rises. This expansion space reduces the probability of the gasket being pushed radially inward beyond the cylindrical inner surface of the tube end. According to a more rigorous concept of the present invention, the hard device has a flange with a relative diameter of -5. This paper size applies to the Chinese National Standard (CNS) A4 specification (210X297). (Please read the precautions on the back before filling this page)- Binding * 498147 A7 _____B7___ 5. Description of the invention (3) The surface (the surface is defined to prevent the flanges from moving relative to each other over a preset minimum position. The above description of the invention is derived from the material used as this gasket The extrusion situation is the result of the initial composition of the coupler or the result of the temperature rise. By providing the expansion space radially outward at the narrow inner seal portion of the sepal, it significantly reduces the expansion of the sepal into the pipe end. Path. The narrow inner sealing part of the cymbal bears the radial load. The reason is that the size of the second part of the shim can be stretched in the first direction across the second position of the stacking groove and its radial outer side is compressed and joined. In addition, compression The joint forms a radially outward auxiliary seal of the main seal. The joint between the second part of the gasket and the radially outer side of the stacking groove provides a radial compression or annular application, when The gasket can expand into the expansion space when the sheet undergoes a radial conversion undesired from the narrow inner sealing portion adjacent to the desired flow path. The main purpose of understanding the present invention from the foregoing description is to provide an accessory and Sheet assembly, in which the situation where the gasket is squeezed into the fluid flow path is significantly reduced, and the smooth and continuous inner wall surface is maintained between the connected pipe parts, so that the stagnation of fluid is reduced. Another object of the present invention is the joint assembly component Better printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). Another object of the present invention is that the pipe joint assembly has an auxiliary seal. Other advantages will be clearly described in the technology of the art in the following detailed description. Illustrated pictures are not described -6- This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) 498147

-The present invention will be described in detail with certain parts and their configurations, that is, preferred embodiments and methods with running-through, which are detailed in the description of the private Tai'an sakizaki Ha leaf are not described in this patent specification and accompanied by descriptions, Among them: FIG. 1 is a cross-sectional view of the structure of the pipe joint according to the preferred form of the present invention; FIG. 2 is an enlarged view of the grooves of the gaskets connected to the 侔 轨 rail & Its more complete display of the relationship between the 7F gasket and the gasket groove; Figure 3 is an enlarged cross-sectional view of the cymbal; Figure 4 is a sectional view of the gasket in an uncompressed state, which is covered on the gasket groove for better clarity Fig. 5 is a cross-sectional view of another preferred embodiment of the present invention; and Fig. 6 shows an additional port in the joint assembly, which is used to detect and monitor the integrity of the inner diameter seal and Possible deficiencies. The symbols are sharp and sharp 10,12 pipe end ---- IT-(Please read the precautions on the back before filling out this page) Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 14 Joint assembly 15 Clamp ring 16, 18 Flange 16a, 18a Hard protrusion 20 Center axis 22, 24 End surface 30 Groove

This paper size applies to Chinese National Standard (CNS) A4 specification (210X297). 498147 A7 B7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Description of the invention (5 32 first part 34 second part 38 gasket 40 inner part 42 Outer part 44, 46 Expansion pockets 56a, 52b A better example of a capillary port is now described with reference to the drawings, which are for the purpose of illustrating the preferred embodiment of the present invention, but are not intended to limit it. Figure 丨 shows a pair of axial pairs The quasi-cylindrical pipe ends 10 and 12 are sealed together by a flange-type joint member assembly 14. The pipe ends 丨 0 and 丨 2 have uniform internal opening diameters D1 and D2, respectively, and their diameters Identical and positioned in close alignment. Ring-shaped continuous radially extending flanges 16 and 18 are respectively located at the end of the tube and the end of the tube. The flange makes the tube end by a traditional clamp ring 15, only shown in the figure, and clamped in the assembled state. Although the flanges 16, 18 can be the only two pieces connected properly to the pipe end, but they are not integrally formed in the illustration Tube end 1 0, 12 Each flange 16, 18 includes a sealed tail end face, which is called a soldier. It is in a plane perpendicular to the central axis 岣 20. The end surface 22, 8 of the flange 22, and the n-shaped eighty-two annular continuous stacking receiving groove 3. In this specific embodiment, the configuration of the stacking groove 30 is such that when the flange 丨 6, i 8 is sandwiched by the relationship shown in Figure ® bearing M 1 Ning-This paper size applies Chinese national standards ( CNS) A4 specification (210X 297 mm) -------- 0-pack ------- Order l · ---- Yes! (Please read the precautions on the back before filling this page) 498147 A7 B7 V. Description of the invention (6 When printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, the first part on the radially inner side of the groove 30 "(see Figure 2) is quite narrow: it opens toward the central circulation channel. The groove 3〇 Includes a second axial comparison position) 4 Tian is located radially outside the first part 3 2 and is continuously arranged in a ring shape: the width of the pile 3 groove is controlled by the flange 1 6 and 1 8 radial The outer edge is larger than Shao 16a, i8a is completed to control the axial movement of the flanges with each other. The gasket 38 made of Shida wood special material is located in the groove, when the cymbal is on the flange An effective seal is formed during compression. Many different gasket materials & strengths are used, which include vinyl propylene, fluorocarbons, stone rubber with ethylene tetrafluoride. In this embodiment, gasket 3 The cross section of 8 is shown in Fig. 3. The inner side of the gasket is located in the radial direction. 4) A rib is defined, and the rib has a fixed axial dimension in the unretracted state, which is slightly larger than the axial dimension of the radial inner position of the groove. (See the overlapping representation in Figure 4.) When assembled, the radial side parts are compressed between the surfaces 22 and 24 to form the first or main seal, which fills the space defined by the narrow part inside the groove. In addition, the inner radial diameter of the blade in the uncompressed state is slightly larger than the diameter of the flow channel. μ Therefore, when the joint is assembled, the inside diameter of the gasket is squeezed into a flush relationship with the flow channel < Orchid Orchid becomes flush, which results in an inner diameter line seal, which is not even lower than the system process temperature. Can stagnate fluid. The radially outer portion 42 of the sepal has an enlarged axial radial dimension, and the formed mushroom-shaped cover is completely extended and expanded from the inner portion of the gasket. Again, the axial dimension of the leather-like cap in the uncompressed state is larger than the axial dimension of the groove in the completed joint. At this time, the cymbal is pressed into the seal and comes into contact with the enlarged portion of the groove (see Figs. 1 and 2). The dimensional relationship generated by these dimensional relationships is dense because of its positional pressure .-------- install ------ Γ ^ L .-------(Please read the Note: Please fill in this page again.) -9 This paper size is applicable to China National Standard (CNS) A4 specification (210 × 297 mm) 498147 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs, and the invention description (7 Make the soil sheet material radially It is extruded, so it is joined at the side of the hard protrusion 16a ㈣ the diameter ㈣ side wall. The seal formed by this joint can significantly increase the rated pressure of the assembly. Another advantage is that it generates annular stress, which prevents the gasket from It bears and moves radially outward when no pressure is applied. The previous technique formed a gap between the outer edge of the gasket and the edge of the gasket and the groove wall (defined by the hard protrusion)-a gap: 酉 其 置, which corresponds to the streamline The pressure will cause the gasket to move radially. The entire hair will move radially due to the lack of effective internal diameter line sealing and fluid stagnation and pollution. Therefore, the diameter between the hard protrusion and the second part of the gasket Illness cold provides an auxiliary seal while preventing this unwanted color The narrow outer radial area of the cap provides a significant mushroom shape. The smooth conversion and shrinkage of the gasket in the axial dimension allows it to expand radially outward from the inner diameter of the tube 4 4, 4 6. The dimensions of the expansion sockets 4 4 and 4 6 are the expected expansion of the gaskets at higher temperatures, but they are not completely filled by the gaskets. Therefore, even if the gaskets are joined with the hard protrusions to form the above-mentioned auxiliary seal 'Expansion socket is defined between the groove wall and the narrowed area of the gasket. The larger weight of the better structure also has the improved alignment stopping point of the joined components. Because the size of the diaphragm can be the first in the groove And the second part interface i and ^ groove form an interference-type close contact, when the joint assembly is completed, the relative pipe system is kept in a temporary alignment. This allows the user to adjust the completion of the joint without the need for adjustment. Alignment of the tube ends. Similarly, since the starting group of the fittings: h is more accurate and easier to maintain by assembling the joints, its alignment will be better. 卞 7 -10- This paper standard applies to Chinese national standards (CNS ) A4 size (210X297 mm) -------- ^^ equipment --- --- Order ------ * {Please read the notes on the back before filling this page}

M A7 B7 V. Description of the invention (8 pieces of ㈣㈣ /; must be made with a radial axis. 塾 pieces. Cooking. The mushroom-shaped pads shown in the specific examples in Figures 1 to 4 are described by Tian Yuyi. The traditional ring-shaped metal ring 50 is used to receive the second part of the radial portion of the solid piece without joining the protruding part to the second rail ^. The joint between the metal ring and the surface of the hard protruding part restricts: the axial direction of the upper part Compression. It still has other characteristics. It is formed with: < Inner melons, springs, and (li) formed with expansion joints under the condition of the composition of the joint and the temperature rise. The left opposite surface of the gasket is a traditional The structure has all the features of the present invention. The gasket can have several different structures, but it is still in the full scope of the present invention. The second is another aspect of the present invention, which uses the Detection and two U ° Especially when the auxiliary seal is formed by the mushroom cap or the second part of the sepal, the flange can be changed to have bita Ua ') 2b connected to the expansion socket. A well-known detector (not shown) will communicate with the port and indicate the integrity of the start and seal of the internal loop. This allows the system operator to accurately monitor the integrity of the main ridges through the expansion socket. The failure of the #inner diameter line seals the supplementary seals and still contains system pressure. In addition, if a modified form of the whole piece is used (as shown in Figure 5), the monitoring configuration can be applied to both sides of the gasket or a single measuring edge. / Figures 2 and 3 show the preferred nominal dimensions of the groove 3 〇 and the gasket 3 8 respectively, especially the nominal dimensions shown on the flange sealing surface with the fitting OD = = English / and LD. = 0.87 English Leaves, however, the relationship between the size of the pipe is generally within a fixed range. After reviewing these dimensions and comparing the dimensions of the grooves and gaskets -11----- This paper size applies to China National Standard (CNS) Α4 size (210X 297 mm) 498147

At that time, the compression of the axial dimension of the narrow inner side of the fork seal is about 20 to 30%, and the compression of the axial dimension of the wider outer side is about 5 to 20%. Of course, the effect of the sealing pressure on the radially inner side ^ is more pronounced. In addition, the wider part of the gasket 38 is compressed axially until it moves to compress the radial outer side surface to engage the radial outer side surface of the groove and form an auxiliary seal. The technique in the art also shows that the expansion socket is not limited in the above structure. Any appropriate gasket and groove size will have the necessary expansion available. In addition, the 'segment' is also contained in a spatial region in the second part so as to have the same use. Therefore, the dents can be located at different peripheral positions of the second part of the gasket, or can achieve the same purpose through the opening in the second part of the gasket.

Richard L. Coonce Aaron S. Sharghi 109 East Dawnwood 4928C Spring Run Ct.

Seven Hills, Ohio 4413 1 Stow, Ohio 44224-5338

Douglas A. Slife 1999 West Highgate Court

Hudson, Ohio 44236 -------- install — I (Please read the notes on the back before filling this page) Order

I Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. The paper size applies to the Chinese National Standard (CNS) A4 (210X297 mm).

Claims (1)

498147 范围 、 Scope of patent application 1. An assembly of a flange joint and a gasket, which is used to connect and seal a pipe or a pipe end, and the pipe or the pipe end defines an axial flow channel therethrough. The flange joint The gasket includes: first and second annular flanges, each of which is located at a corresponding tube end, and the flange has an axially opposite end surface and an adjacent radial end wall, so as to be assembled as a joint A peripheral groove is defined; a first portion of the groove is open to the flow channel of the pipe, a second portion of the groove extends radially outward from the first portion, and passes radially through the radial end wall Connection; with a gasket that seals the assembled joint to prevent fluid from flowing from the flow channel of the pipe, the first part of the gasket seals the first part of the groove, and the second part of the gasket is The first part stretches into the second part of the groove; the second part of the gasket is axially compressed when the joint is assembled, and is engaged with the radial end wall to produce a radial compression of the sepal, the pad The volume of the second part of the sheet is smaller than the second part of the groove Volume in order to provide expansion space in the second part of the groove when the joint is assembled; printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) Bits include a rib that compresses axially when the joint is assembled. When the joint is assembled and compressed, it will produce a radial displacement to form a flush inner diameter line seal adjacent to the inner surface of the pipe. . -2. The assembly according to item 1 of the scope of patent application, wherein the radial compression is opposed to the radial pressure generated by the fluid in the flow channel to avoid radial displacement of the gasket. -13- This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) 498147 8 8 88 ABCD Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 6. Scope of patent application 3. According to item 2 of the scope of patent application The assembly, wherein the radial compression effectively increases the annular strength of the gasket. 4. The assembly according to item 3 of the scope of patent application, wherein the second part of the gasket is joined to the end wall of the sample to form an auxiliary seal, which is radially aligned and spaced from the seal formed by the first part of the cymbal. 5. The assembly according to item 1 of the scope of patent application, wherein the outer edge surface of the second part of the gasket is radially aligned with the first part of the gasket. 6. The assembly according to item 1 of the scope of patent application, wherein the second part of the gasket is axially symmetrical with a radial line, and the radial line is shared with the first and second parts of the gasket ° 7. According to the scope of patent application The assembly of item 1, wherein the first part of the gasket includes a rib, the rib is axially compressed when the joint is assembled, and forms a smoothness when the assembled joint is radially displaced and subjected to compression. The inner diameter line seal is continuous with the inner surface of the pipe. 8. The assembly according to item 1 of the scope of patent application, wherein the joint between the second portion of the gasket and the radial end wall provides an obstacle that prevents substances from entering the groove from the outside of the assembly. 9. The assembly according to item 1 of the scope of patent application, wherein the second radial center of the gasket is located at the most radially outward end of the gasket and includes a top portion, and the top portion is engaged with the pain wall when the joint is assembled; the expansion space and The radially farthest part of the gasket is adjacent and axially symmetrical; the expansion space allows the gasket material to expand when the gasket is exposed to higher temperatures. &amp; 10. The assembly according to item 丨 of the scope of patent application, wherein the second part of the gasket and the first part are integrally formed, and the first and second parts of the gasket are bounded ^ -------- ------ ^ ir ------ 0-(Please read the notes on the back before filling this page) -14- A8 B8 C8 D8 The scope of patent application ^ shoulders are axially wider than one part of the gasket; the inside of the shoulders directly pinches the interface between the first two and the first one to form an interference close contact; read concave The axial dimension of the two pounds is larger than the axial dimension of the first / part of the gasket. 11. According to the first claim, the assembly of item 10 of the patented patent park, wherein the interference type P makes the entire piece stay at the center of the flange during the assembly of the joint. —The assembly according to item 11 of the scope of the patent application, wherein the second upper j of the gasket, the axial dimension when compressed is larger than the axial dimension of the second part of the groove, and has a larger weight in order to assemble the joint The alignment required to maintain the flange during the process. U The assembly according to item 1 of the scope of the patent application, wherein the second part of the gasket 'the sleeve is seen in the first part' and its cross section is narrowed radially from the first part. According to the assembly of claim 13 of the patent scope, the expansion space is located at the opposite end face in the wheel direction, between the radial end wall and the narrowed part of the gasket. b. The assembly according to item 1 of the scope of patent application, wherein the cross section of the gasket is mushroom-shaped. '16. The assembly according to item 1 of the scope of patent application, wherein the first part of the gasket includes a rib with an inner annular surface, the annular surface has a first straight diameter and a second diameter and a second diameter The first diameter of the younger is before the cymbal is positioned on a flange, the second diameter is larger than the first diameter after the shim is positioned on a convex green ridge and after the shim is compressed, the third straight After the joint is assembled with the compression gasket. 17. The assembly according to item i of the scope of the patent application, wherein the radial wall end is made of ΰ -15- this paper size is applicable to household standards (CNS) (21GX297 public director) -------- 0. Pack ------ ^ Order k ----- 0-(Please read the notes on the back before filling out this page) Printed by the Consumers' Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 4 Outer 147 Staff Consumption of the Central Standards Bureau of the Ministry of Economic Affairs Co-operative printed A8, B8, C8, D8 6. Scope of patent application, the hard radial outer protrusions are formed, and they are joined to each other when the joints are assembled to limit the compressive force applied to the 'sheets. 18. The assembly according to item 丨 of the patent application park, wherein the flange includes a woolen, "Tiantongkou", the first end of which is in fluid communication with the expansion space, and the second end of the flange can be JL connected to the outer side of the &amp; In order to measure the characteristics contained in the expansion space, such as pressure characteristics. 19. According to the assembly of the patent application for the first section of the patent, where the first part of the gasket is drawn to compress and compress to about 2 when 6 pieces are assembled. In the range of 30%, the first position of the cymbal is axially compressed in the range of about 15-20%. 20. A gasket is inserted into the continuous groove in the periphery of the flange joint. In order to axially connect the aligned pipe ends, the flange joint has a facing flange at the pipe end to form a recess between the flanges when the joint is assembled. The axially opposite sealing surface is formed with the radial end surface. The first part of the groove is open to the internal flow channel of the pipe. The first position of the groove extends radially outward from the first position. The diaphragm includes: ·: The first part of the gasket and the second part of the gasket, this first part seals the first part of the groove, The second part extends from the first part into the second part of the groove; the second part of the gasket is compressed axially when the joint is assembled, and the more the end faces are joined to cause the radial compression of the gasket; the gasket The body of the second part and the volume smaller than the second position of the groove, so that when the joining member is assembled in the second part of the groove, an expansion space is formed. 21. The gasket according to item 20 of the patent application scope, wherein the gasket The radial compression of the sheet forms an auxiliary seal, which is sealed with the first part of the gasket = right -------- ^ 装 ------ ^ 订 U ----- # (please first Read the notes on the reverse side and fill in this page) • 16- ^ 5147 Λ8 Β8 C8 〇8 The scope of patent application is standardized and spaced. 22. According to #, ^ ^ t Λ of the scope of patent application, the direction The radial pressure phase of the fluid in the moving platen ^ moving channel. ^ ^ ^ Shift. M pairs to prevent the gasket from radial position 23. According to the cymbals of item 20 of the patent application scope, the radial compression has Increase the ring strength of the gasket. M. According to the potential of the patent application scope of the 20th potential film, in which the replacement film is second, the cross-section of the self-segment film The first part is axially contracted in the radial outward direction. 25. The cymbal according to item 24 of the scope of patent application is between the opposite flange surface and the narrow section of the gasket. 26. According to the scope of patent application No. 2 〇 The cymbal elastic material according to item 27. The cross-sectional shape of the cymbal according to item 20 of the patent application scope. 28. The cymbal pressure according to item 20 of the patent application scope provides an obstruction to the atmosphere. 29. According to The cymbal position of item 20 in the scope of the patent application is narrower axially than the second part of the groove so that its radial direction = the shoulder. The size of the gasket is closely interfering with the shoulder to keep the gasket in position. 〇. The gasket according to item 29 of the patent application scope, wherein the axial dimension of the gasket when it is uncompressed in the second position is greater than the axial dimension of the second part of the groove, and its weight is sufficient to maintain the flange during the assembly of the joint. The required alignment portion is narrow where the expansion space is located where the gasket includes _ where the gasket is symmetrical where the radial direction of the gasket is where the groove's part and -17-foot standard (cns) Α4 · (210χ297 Consumer Cooperatives, Central Standards Bureau, Ministry of Economic Affairs Yin Zeyi, patent application scope 31. A sealing flange with eight joints aligned axially: two pieces <Wanfa 'This joint uses two flanges with grooves to protrude from ":" when the joint is assembled The steps of forming between the flanges-concave method include: · Determining the sealing surface and the radial end face, the square a. Set a piece of art, b. When the joint group 1: the flange axially opposite the sealing surface In the groove;-radial to the end face ;: time axis: the piece 'in order to move the cymbal to the position of the J Ren and Shao; c. Squeeze the thin gasket in the sleeve direction to produce a radial compression; Xiao 32. The f-sheet is compressed to maintain the required swelling area for the entire sheet. Adding gaskets: The method of item M, where the radial compression effect = the degree of private shape, in order to counteract the radial generated by the fluid in the pipe. "According to: Method of item 31 of the patent scope, where Radial compression—a secondary seal—is radially aligned and spaced from the primary seal at the pipe end interface. 34. The method according to item 3 of the scope of patent application, which includes the steps of using an interference tight contact between the pad and the flange, so as to keep the #piece at the desired center position during the assembly of the joint. 3 'The method according to item 34 of the scope of the patent application, the steps of which include providing sufficient weight of the cymbals to maintain the alignment required by the flange during the assembly of the joint. 36. The assembly according to item 1 of the patent application, wherein the gasket includes an elastomer. -18 This paper music scale is applicable to Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page) • Installation · ar Φ