A butt-jointed flange metal sealing cover structure

Abstract

The present invention relates to a butt-joint flange metal sealing cover structure, which is used to seal the flange installed on the pipeline. The butt-joint flange metal sealing cover structure includes a main cover mechanism and an external sealing mechanism. The external sealing mechanism is fixed on the outside of the main cover mechanism and is used to seal the main cover mechanism. The main cover mechanism includes a semicircular cover shell and a bottom support plate, a transfer plate, an ear block, a U-shaped card plate, a fixing bolt, a telescopic round rod and a rubber suction block located on the inner side of the semicircular cover shell. The main cover mechanism can further seal and isolate the flange and the connecting end of the pipeline. At the same time, the main cover mechanism uses the bolts used in conjunction with the flange to achieve the connection and fixation between itself and the flange, thereby effectively avoiding the relative rotation of the main cover mechanism. The external sealing mechanism implements external sealing on the connection between the main cover mechanism and the pipeline. Compared with the prior art, the present invention can further seal and isolate the connecting end of the flange and the pipeline, ensuring the overall sealing effect and the firmness of the connection between the pipelines.

Description

Technical Field

[0001] The invention relates to the technical field of flange sealing, and in particular to a butt flange metal sealing cover structure. Background Art

[0002] Flange, also known as flange flange or flange, is a part that connects shafts to each other and is used to connect pipe ends. Flange connection is to fix two pipes, pipe fittings or equipment separately on a flange plate, and then fasten them together with gaskets and bolts to complete the connection.

[0003] Flange connection is an important and widely used connection method in pipeline engineering. When connecting pipelines, attention should be paid to sealing. Sealing problems will cause leakage of gaseous substances in the pipeline. The sealing of the flange is often improved by improving the quality of the gasket and reducing the bolt spacing. However, the effect obtained by only these two methods is not very significant. Under the action of external forces, the connection tightness between the flange and the pipeline is more easily affected, and changes in the connection tightness will affect the sealing.

[0004] The utility model with publication number CN212509946U discloses a flange sealing structure, including a first flange, a second flange and a sealing member, wherein the first flange is connected to the second flange, and a first groove arranged in an annular manner and a second groove corresponding to the first groove are respectively provided on the connecting end surfaces of the first flange and the second flange, and the first groove and the second groove cooperate with each other to form a sealing cavity for placing the sealing member; the sealing member includes a body, a first sealing ring, a second sealing ring and a third sealing ring, the first sealing ring is arranged on the upper side of the body and abuts against the groove wall of the first groove, the second sealing ring is arranged on the lower side of the body and abuts against the groove wall of the second groove, and the third sealing ring is arranged on the outer side of the body and abuts against the connection between the first flange and the second flange.

[0005] The sealing structure of the flange is achieved by providing a groove to accommodate the sealing body and using multiple sealing rings to abut against the groove. This structure is inconvenient to operate and relies on the sealing performance of the sealing ring. The sealing ring is easily worn and the sealing performance and the firmness of the connection cannot be guaranteed. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a butt-joint flange metal sealing cover structure which improves the connection firmness and sealing effect between the entire sealing cover structure and the pipeline.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A butt-joint flange metal sealing cover structure is used to seal a flange installed on a pipeline, the butt-joint flange metal sealing cover structure comprises a main cover mechanism and an outer sealing mechanism, the outer sealing mechanism is fixed to the outside of the main cover mechanism and is used to seal the main cover mechanism; the main cover mechanism comprises a semicircular cover shell and a bottom support plate, a transfer plate, an ear block, a U-shaped clamping plate, a fixing bolt, a telescopic round rod and a rubber suction block located inside the semicircular cover shell;

[0009] The number of the semicircular cover shells is at least two, and the two semicircular cover shells are arranged symmetrically up and down, and a accommodating cavity for accommodating the flange is formed inside; a semicircular through groove for the pipe to extend into is provided in the middle part of the semicircular cover shell, and the bottom support plate is supported by the semicircular cover shell, and one side of the bottom support plate matches the shape of the flange for abutting the flange; one end of the ear block is connected to the inner side wall of the semicircular cover shell, and the other end is rotatably connected to the transfer plate; the U-shaped clamping plate is installed at the end of the transfer plate away from the ear block, and the horizontal section in the middle of the U-shaped clamping plate is connected to the telescopic round rod, and the end of the telescopic round rod away from the U-shaped clamping plate is connected to the rubber suction block for abutting the pipe; the vertical sections on both sides of the U-shaped clamping plate are connected to the fixing bolts, and the fixing bolts abut against the side of the transfer plate away from the telescopic round rod; a fixing hole for fixing the flange bolt is formed between the U-shaped clamping plate and the transfer plate.

[0010] Furthermore, a spring telescopic rod is installed on one side of the bottom support plate, and the fixed end of the spring telescopic rod is connected to the inner wall of the semicircular cover shell, and the telescopic end is connected to the bottom support plate.

[0011] Furthermore, elastic plates with arc structures are installed at both ends of the bottom support plate, and the elastic plates protrude toward the outside of the semicircular cover shell. An elastic clamp is installed at the end of the elastic plate away from the bottom support plate. The elastic clamp is located on one side of the bottom support plate for abutting the flange. The elastic clamp is used to abut the flange and is tangent to the outer side of the flange.

[0012] Furthermore, the external sealing mechanism includes a sealing plate, fastening bolts, a rubber sealing layer and a fastening buckle. A through hole is provided in the middle of the main body of the sealing plate, and the main cover mechanism is located in the through hole. The sealing plate is located on the outside of the connection between the two semicircular cover shells. A semicircular ring structure is provided in the middle of both sides of the sealing plate, and the semicircular ring structure is concentric with the semicircular through groove. There are at least two sealing plates, and the two sealing plates are fixed by fastening bolts arranged along the circumference of the sealing plate. A rubber sealing layer is provided on the outside of the sealing plate, and the rubber sealing layer is distributed on the upper and lower ends, the outside and the surface of the pipeline of the sealing plate. A fastening buckle is also provided on the outside of the rubber sealing layer, and the fastening buckle is used to fix the rubber sealing layer and the pipeline.

[0013] Furthermore, the outer sealing mechanism also includes a top plate, and L-shaped plates are symmetrically installed at both ends of the top plate. The top plate is located at the top of the semicircular cover shell, and the vertical section of the L-shaped plate is in contact with the side surface of the semicircular cover shell. The horizontal section of the L-shaped plate is provided with a snap-on hole, and the snap-on hole is fixed by the fastening buckle.

[0014] Furthermore, one end of the top plate facing the semicircular cover shell is an upwardly protruding arc structure, and a sponge block is installed on one end of the top plate facing the semicircular cover shell.

[0015] Furthermore, the docking flange metal sealing cover structure also includes a connecting shaft rod, both ends of which are rotatably connected to connecting plates, and the connecting plates can also be rotatably connected to the sealing plate. The connecting shaft rod is a structure with telescopic and locking functions.

[0016] Furthermore, the connecting shaft comprises a No. 1 shaft, a No. 2 shaft and a connecting buckle, the upper end of the No. 1 shaft is provided with a slide groove, the No. 2 shaft is installed on the slide groove, and the connecting buckle is sleeved at the connection between the No. 1 shaft and the No. 2 shaft.

[0017] Furthermore, the docking flange metal sealing cover structure also includes a telescopic plate, and the front and rear ends of the telescopic plate are provided with connecting through holes, the connecting through holes cooperate with the fastening bolts, and the sealing plate is connected to the telescopic plate by fastening bolts passing through the connecting through holes.

[0018] Furthermore, a rubber block is installed on one side of the bottom support plate for abutting the flange.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) The main cover mechanism in the present invention can further seal and isolate the flange and the connecting end of the pipeline. At the same time, the main cover mechanism uses the bolts used in conjunction with the flange to achieve the connection and fixation between itself and the flange, thereby effectively avoiding the main cover mechanism from rotating relative to each other, affecting the overall sealing effect and the connection firmness between the pipelines. The purpose of setting up the external sealing mechanism is to implement external sealing at the connection between the main cover mechanism and the pipeline, thereby improving the overall sealing effect of the sealing cover structure.

[0021] (2) The top plate, L-shaped plate and fastening buckle in the present invention can further improve the connection tightness between the rubber sealing layer and the pipeline and the sealing plate, and also help to improve the connection firmness between the sealing cover structure as a whole and the pipeline.

[0022] (3) The connecting plate, connecting shaft rod and telescopic plate of the present invention enable the unit composed of the main cover mechanism and the outer sealing mechanism to be combined and connected in both vertical and horizontal directions. At the same time, the connecting plate, connecting shaft rod and telescopic plate can also play a certain guiding and limiting role.

[0023] (4) The elastic clamp and the elastic plate as a whole in the present invention can play a certain limiting role on the flange, and can also serve as an internal buffer and shock-absorbing structure to prevent the flange from deflecting or colliding inside the semicircular cover under external force impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional structural schematic diagram of a butt-jointed flange metal sealing cover structure is provided in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 The structure in the figure is a schematic diagram of the three-dimensional structure of the whole of the pipe and the flange;

[0026] Figure 3 for Figure 2 An enlarged view marked with X in the accompanying drawings;

[0027] Figure 4 for Figure 2 A top view of

[0028] Figure 5 for Figure 4 BB section view;

[0029] Figure 6 for Figure 4 AA section view;

[0030] Figure 7 A schematic diagram of the three-dimensional structure of a semicircular cover and the internal structure of the semicircular cover is provided in an embodiment of the present invention;

[0031] Figure 8 for Figure 7 The enlarged view of the figure marked with Y;

[0032] Fig. 9 for Figure 7 A top view of

[0033] Fig.10 For Figure 2 On the basis of Figure 1 A three-dimensional schematic diagram of the structure of the middle part;

[0034] Fig.11 For Fig.10 On the basis of Figure 1 A three-dimensional schematic diagram of the central part of the mechanism;

[0035] In the figure, 1, main cover mechanism; 2, outer sealing mechanism; 10, semicircular cover shell; 11, bottom support plate; 110, spring telescopic rod; 111, elastic plate; 112, elastic splint; 113, rubber block; 12, transfer plate; 120, connecting shaft; 121, connecting plate; 122, shaft rod No. 1; 123, shaft rod No. 2; 124, connecting buckle; 125, telescopic plate; 126, top plate; 127, L-shaped plate; 13, ear block; 14, U-shaped clamping plate; 15, fixing bolt; 16, telescopic round rod; 17, rubber suction block; 20, sealing plate; 21, fastening bolt; 22, rubber sealing layer; 23, fastening buckle. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0040] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] Example 1

[0043] The present embodiment provides a butt-joint flange metal sealing cover structure for sealing a flange installed on a pipeline, the butt-joint flange metal sealing cover structure comprises a main cover mechanism 1 and an outer sealing mechanism 2, the outer sealing mechanism 2 is fixed to the outside of the main cover mechanism 1, and is used to seal the main cover mechanism 1; the main cover mechanism 1 comprises a semicircular cover shell 10 and a bottom support plate 11, a transfer plate 12, an ear block 13, a U-shaped clamping plate 14, a fixing bolt 15, a telescopic round rod 16 and a rubber suction block 17 located inside the semicircular cover shell 10;

[0044] The number of the semicircular cover shells 10 is at least two, and the two semicircular cover shells 10 are arranged symmetrically up and down, and a housing cavity for accommodating the flange is formed inside; a semicircular through groove for the pipeline to extend into is provided in the middle of the semicircular cover shell 10, and the bottom support plate 11 is supported by the semicircular cover shell 10, and one side of the bottom support plate 11 matches the shape of the flange for abutting the flange; one end of the ear block 13 is connected to the inner wall of the semicircular cover shell 10, and the other end can be rotatably connected to the transfer plate 12; the U-shaped card plate 14 is installed at the end of the transfer plate 12 away from the ear block 13, and the horizontal section in the middle of the U-shaped card plate 14 is connected to the telescopic round rod 16, and the end of the telescopic round rod 16 away from the U-shaped card plate 14 is connected to the rubber suction block 17 for abutting the pipeline; the vertical sections on both sides of the U-shaped card plate 14 are connected to the fixing bolts 15, and the fixing bolts 15 abut against the side of the transfer plate 12 away from the telescopic round rod 16; a fixing hole for fixing the flange bolt is formed between the U-shaped card plate 14 and the transfer plate 12.

[0045] When in use, two pipes are fixed by flange connection, and the flanges are connected by matching flange bolts. The installation directions of the two flange bolts symmetrically arranged on the upper end of the flange with respect to the pipe are opposite, and then the semicircular cover 10 with the transfer plate is manually clamped with the pipe, and the lower ends of the flanges are located in this semicircular cover. Then the worker holds the semicircular cover 10 with the clamping sleeve, and then manually rotates the transfer plate 12 toward the direction of the pipe until the transfer plate 12 is tightly pressed against the flange bolts adjacent to it, and then manually clamps the U-shaped clamping plate 14 to clamp the flange bolts in contact with the transfer plate 12 and completes the clamping with the transfer plate 12, that is, the flange bolts in contact with the transfer plate 12 It is clamped between the horizontal section of the U-shaped clamping plate 14 and the transfer plate 12, and then the fixing bolts 15 are installed to prevent the U-shaped clamping plate 14 from being separated from the transfer plate 12. Then, the telescopic round rod 16 is manually stretched and the rubber suction block 17 is pressed on the pipe so that the rubber suction block 17 is firmly attached to the pipe. At this point, the semicircular cover shell 10 where the transfer plate 12 is located is relatively fixed to the flange and the pipe, and the telescopic round rod 16 in the stretched state is not easy to retract in the natural state. Next, the remaining cover shell is manually docked with the fixed semicircular cover shell, and then the semicircular cover shells are fixedly connected through the outer sealing mechanism. At this time, the flange is completely wrapped by the shell formed by the two semicircular cover shells 10.

[0046] As a preferred embodiment, a spring telescopic rod 110 is installed on one side of the bottom support plate 11 , and the fixed end of the spring telescopic rod 110 is connected to the inner wall of the semicircular cover 10 , and the telescopic end is connected to the bottom support plate 11 .

[0047] When in use, the semicircular cover shell 10 with the transfer plate is manually connected to the pipeline, the flange presses the bottom support plate 11, and the bottom support plate 11 simultaneously compresses the spring telescopic rod 110. When the two semicircular cover shells 10 are connected and fixed, and all the spring telescopic rods 110 are in a compressed state, the bottom support plate is subjected to the thrust given by the spring telescopic rod 110, and the direction of this thrust points to the center of the flange. The flange is tightly clamped between the bottom support plates 11. On this basis, the connection firmness between the overall sealing structure and the flange and the pipeline is improved to a certain extent.

[0048] As a preferred embodiment, elastic plates 111 with arc structures are installed at both ends of the bottom support plate 11. The elastic plates 111 protrude toward the outside of the semicircular cover shell 10. An elastic clamp 112 is installed at the end of the elastic plate 111 away from the bottom support plate 11. The elastic clamp 112 is located on one side of the bottom support plate 11 for abutting the flange. The elastic clamp 112 is used to abut the flange and is tangent to the outer side of the flange.

[0049] The elastic clamp 112 is installed on the opposite side of the bottom support plate 11. When the flange contacts the bottom support plate 11, it is clamped between the elastic clamps 112. The elastic clamp 112 and the elastic plate 111 as a whole can play a certain limiting role on the flange, and can also serve as an internal buffering and shock-absorbing structure to prevent the flange from deflecting or colliding inside the semicircular cover under external force impact.

[0050] As a preferred embodiment, the external sealing mechanism 2 includes a sealing plate 20, a fastening bolt 21, a rubber sealing layer 22 and a fastening buckle 23. A through hole is provided in the middle of the main body of the sealing plate 20, and the main cover mechanism 1 is located in the through hole. The sealing plate 20 is located on the outside of the connection between the two semicircular cover shells 10. A semicircular ring structure is provided in the middle of both sides of the sealing plate 20, and the semicircular ring structure is concentric with the semicircular through groove. There are at least two sealing plates 20, and the two sealing plates 20 are fixed by fastening bolts 21 arranged along the circumference of the sealing plate 20. A rubber sealing layer 22 is provided on the outside of the sealing plate 20, and the rubber sealing layer 22 is distributed on the upper and lower ends, the outside and the pipeline surface of the sealing plate 20. A fastening buckle 23 is also provided on the outside of the rubber sealing layer 22, and the fastening buckle 23 is used to fix the rubber sealing layer 22 and the pipeline.

[0051] When in use, the remaining cover shell is manually docked with the fixed semicircular cover shell, and then the rubber sealing layer 22 is put on the side end of the sealing plate, and the opposite side of the rubber sealing layer 22 is placed on the upper end of the sealing plate, and the middle part of the opposite side of the rubber sealing layer 22 is tightly attached to the pipe surface. Then the fastening bolts 21 are installed. The fastening bolts 21 fix the two sealing plates 20 while fixing the opposite side of the rubber sealing layer 22 to the upper end of the sealing plate 20. Then, the fastening buckle 23 is clamped on the pipe section where the rubber sealing layer 22 is located and the opposite side of the fastening buckle 23 is made as tight as possible with the opposite side of the sealing plate 20. Then, the bolts provided with the fastening buckle 23 are installed to fix the buckle.

[0052] As a preferred embodiment, the outer sealing mechanism 2 also includes a top plate 126, and L-shaped plates 127 are symmetrically installed at both ends of the top plate 126. The top plate 126 is located at the top of the semicircular cover shell 10, and the vertical section of the L-shaped plate 127 is in contact with the side surface of the semicircular cover shell 10. The horizontal section of the L-shaped plate 127 is provided with a snap-on hole, and the snap-on hole is fixed by a fastening buckle 23.

[0053] When in use, the fastening buckle is manually inserted into the pipe section where the rubber sealing layer is located and the opposite side of the fastening buckle is as close as possible to the opposite side of the sealing plate. Then, the bolts used in conjunction with the fastening buckle are installed first, and then the top plate 123 and the L-shaped plate 127 are integrally inserted into the semicircular cover shell 10, and the clamping hole and the bolts used in conjunction with the fastening buckle 23 are connected. Then, the nut is installed to lock the fastening buckle, and the L-shaped plate 127 is clamped between the nut and the upper end of the buckle, and the top plate is tightly attached to the upper surface of the semicircular cover shell. The top plate, L-shaped plate 127 and fastening buckle 23 as a whole can further improve the connection tightness between the rubber sealing layer and the pipe and the sealing plate, and also help to improve the connection firmness between the overall sealing structure and the pipe.

[0054] Further, as a preferred embodiment, the end of the top plate 126 facing the semicircular cover shell 10 is an upwardly protruding arc structure, and a sponge block is installed on the end of the top plate 126 facing the semicircular cover shell 10.

[0055] The sponge block can increase the friction between the top plate 126 and the semicircular cover shell 10, thereby reducing the probability of the top plate being deflected.

[0056] As a preferred embodiment, the docking flange metal sealing cover structure also includes a connecting shaft 120, both ends of which are rotatably connected to a connecting plate 121, and the connecting plate 121 can also be rotatably connected to the sealing plate 20. The connecting shaft 120 is a structure with telescopic and locking functions.

[0057] When there are two pipeline routes arranged side by side, the connecting shaft and the connecting plate are manually placed between the left and right adjacent sealing plates, and then the end of the connecting plate away from the pin connected to the connecting shaft 120 is sleeved from bottom to top on the lower end of the fastening bolt adjacent to the connecting plate 121, and then the nut is installed to fix the connecting plate. At this time, the connecting plate serves to connect and fix the adjacent main cover mechanism and the outer sealing mechanism as a whole, that is, the connecting plate 121 and the connecting shaft 120 as a whole enable the main cover mechanism and the outer sealing mechanism to be horizontally combined and connected as a whole. The installation operation of the connecting plate 121 can be carried out after the two pipeline routes are arranged, or it can be carried out during the process of completing the arrangement of the two pipeline routes. The advantage of installing the connecting plate during the process of completing the arrangement of the two pipeline routes is that the connecting plate 121 can guide the installation between the adjacent main cover mechanism and the outer sealing mechanism as a whole.

[0058] Further, as a preferred embodiment, the connecting shaft 120 includes a No. 1 shaft 122, a No. 2 shaft 123 and a connecting buckle 124, the upper end of the No. 1 shaft 122 is provided with a slide groove, the No. 2 shaft 123 is installed on the slide groove, and the connecting buckle 124 is sleeved at the connection between the No. 1 shaft 122 and the No. 2 shaft 123.

[0059] After the connecting plate on one side of the connecting shaft rod has been connected with the fastening bolt, the bolts of the connecting buckle 124 are manually loosened, and then the No. 1 shaft rod 122 and the No. 2 shaft rod 123 are moved relative to or in the opposite direction. When the No. 1 shaft rod 122 and the No. 2 shaft rod 123 move relative to each other, the total length of the two shaft rods is reduced, and the connecting plate connected with the fixing bolts is driven by the No. 1 shaft rod 122 and the No. 2 shaft rod 123 to rotate toward the connecting buckle 124. After the connecting plate 121 rotates a certain angle, the connecting buckle 124 is manually tightened to make The No. 1 shaft rod 122 and the No. 2 shaft rod 123 can no longer move, at this time the overall lateral size of the connecting plate 121 and the connecting shaft rod 120 increases, and then the angle of the remaining connecting plates is adjusted, and then the remaining connecting plates are connected to the fastening bolts, when the No. 1 shaft rod 122 and the No. 2 shaft rod 123 move in opposite directions, the overall lateral size of the connecting plate 121 and the connecting shaft rod 120 decreases. In summary, the overall lateral size of the connecting shaft rod 120 and the connecting plate 121 can be adaptively adjusted according to the distance between the sealing plates on the adjacent pipeline lines.

[0060] As a preferred embodiment, the docking flange metal sealing cover structure also includes a telescopic plate 125, which has connecting through holes at both the front and rear ends, and the connecting through holes cooperate with the fastening bolts 21. The sealing plate 20 is connected to the telescopic plate 125 by the fastening bolts 21 passing through the connecting through holes.

[0061] The diameter of the connecting through hole is equal to the diameter of the fastening bolt 21. The telescopic plate 125 is located below the sealing plate. The connection and fixation between the adjacent main cover mechanisms and the outer sealing mechanism as a whole on the same pipeline route can be achieved through the telescopic plate 125. The specific operation is: manually stretch the telescopic plate 125 until the connecting through holes at both ends are located below the fastening bolt 21, and then move the telescopic plate 125 upward so that the connecting through holes are sleeved on the lower end of the fixing bolt from bottom to top, and then install the nut to fix the telescopic plate 125. At this time, the adjacent main cover mechanisms and the outer sealing mechanism as a whole are connected and fixed through the telescopic plate. At the same time, the telescopic plate 125 can also guide and limit the installation of the adjacent main cover mechanisms and the outer sealing mechanism as a whole.

[0062] As a preferred embodiment, a rubber block 113 is installed on one side of the bottom support plate 11 for abutting against the flange.

[0063] The rubber block can play a role in buffering and absorbing shock for the flange, and at the same time can increase the friction between the flange and the bottom support plate 11, thereby reducing the probability of relative deviation between the flange and the bottom support plate.

[0064] A more optimal implementation can be obtained by arbitrarily combining the above preferred implementations. An optimal implementation is described in detail below.

[0065] refer to Figure 1and Figure 7 As shown, this embodiment provides a butt-flange metal sealing cover structure, including a main cover mechanism 1 and an outer sealing mechanism 2 , wherein the outer sealing mechanism 2 is arranged outside the main cover mechanism 1 .

[0066] refer to Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the main cover mechanism 1 includes a semicircular cover shell 10, a bottom support plate 11, a transfer plate 12, an ear block 13, a U-shaped card plate 14, a fixing bolt 15, a telescopic round rod 16 and a rubber suction block 17. The semicircular cover shell 10 is arranged symmetrically up and down, and a semicircular through groove is opened in the middle of the opposite ends of the semicircular cover shell 10. The bottom support plate 11 is placed in the semicircular cover shell 10, and two transfer plates 12 are arranged between the bottom support plates 11. The two transfer plates 12 are arranged front and back in an alternating manner, and the lower ends of the two transfer plates 12 are located inside the same semicircular cover shell 10. An ear block 13 is installed at the lower end for symmetrical rotation front and back through a pin shaft. The end of the ear block 13 away from the pin shaft is connected to the inner wall of the semicircular cover shell 10 where the transfer plate 12 is located. A U-shaped clamping plate 14 is slidably installed on the opposite side of the transfer plate 12. Fixing bolts 15 are installed between the vertical sections of the U-shaped clamping plate 14 by threaded cooperation. The fixing bolts 15 are in contact with the surface on the opposite side of the transfer plate 12. A telescopic round rod 16 is installed on the opposite side of the horizontal section of the U-shaped clamping plate 14. A rubber suction block 17 is installed on the end of the telescopic round rod 16 away from the U-shaped clamping plate 14.

[0067] refer to Figure 2 As shown, two pipes are fixed by flange connection, and the flanges are connected by matching flange bolts, such as Figure 7As shown, the installation directions of the two flange bolts at the upper end of the flange are opposite, and then the semicircular cover 10 with the transfer plate 12 is manually clamped to the pipeline, and the lower ends of the flanges are located in this semicircular cover 10. Then the worker holds the semicircular cover 10 of the sleeve, and then manually rotates the transfer plate 12 toward the direction of the pipeline until the transfer plate 12 is pressed against the bolts adjacent to it, and then manually clamps the flange bolts in contact with the transfer plate 12 on the U-shaped clamping plate 14 and completes the clamping with the transfer plate 12, that is, the flange bolts in contact with the transfer plate 12 are clamped between the horizontal section of the U-shaped clamping plate 14 and the transfer plate 12, and then the fixing bolts 15 are installed to prevent the U-shaped clamping plate 14 from being separated from the transfer plate 12, and then the telescopic round rod 16 is manually stretched and the rubber suction block 17 is pressed on On the pipeline, so that the rubber suction block 17 is firmly attached to the pipeline, at this point the semicircular cover shell 10 where the transfer plate 12 is located is relatively fixed with the flange and the pipeline, and the telescopic round rod 16 in the stretched state is not easy to retract in the natural state, and then the remaining cover shell is manually docked with the fixed semicircular cover shell 10, and then the semicircular cover shells 10 are fixedly connected through the outer sealing mechanism 2. At this time, the flange is completely wrapped by the shell formed by the two semicircular cover shells 10. The purpose of setting the main cover is to further seal and isolate the flange and the connecting end of the pipeline. At the same time, the main cover mechanism 1 uses the bolts used in conjunction with the flange to realize the connection and fixation between itself and the flange, thereby effectively avoiding the relative rotation of the main cover mechanism 1, affecting the overall sealing effect and the connection firmness between the pipelines.

[0068] refer to Figure 6 and Figure 7 As shown, spring telescopic rods 110 are symmetrically installed on the opposite sides of the bottom support plate 11, and the end of the spring telescopic rod 110 away from the bottom support plate 11 is connected to the inner wall of the semicircular cover shell 10. When the semicircular cover shell 10 with the transfer plate 12 is manually clamped with the pipeline, the flange presses the bottom support plate 11, and the bottom support plate 11 synchronously compresses the spring telescopic rod 110. When the two semicircular cover shells 10 are connected and fixed, and all the spring telescopic rods 110 are in a compressed state, the bottom support plate 11 is subjected to the thrust given by the spring telescopic plate 125, and the direction of this thrust points to the center of the flange, and the flange is tightly clamped between the bottom support plates 11. On this basis, the connection firmness between the overall sealing structure and the flange and the pipeline is improved to a certain extent.

[0069] refer to Figure 6 and Figure 7As shown, elastic plates 111 with arc structures are symmetrically installed at the left and right ends of the bottom support plate 11. The elastic plates 111 protrude toward the outside of the semicircular cover shell 10. An elastic clamping plate 112 is installed at one end of the elastic plate 111 away from the bottom support plate 11. The elastic clamping plate 112 is installed on the opposite side of the bottom support plate 11. When the flange contacts the bottom support plate 11, it is clamped between the elastic clamping plates 112. The elastic clamping plate 112 and the elastic plate 111 as a whole can play a certain limiting role on the flange, and can also serve as an internal buffering and shock-absorbing structure to avoid the flange from deflecting or colliding inside the semicircular cover shell 10 under external force impact.

[0070] refer to Figure 6 and Figure 7 As shown, a rubber block 113 is installed on the opposite side of the bottom support plate 11. The rubber block 113 can buffer and reduce shock for the flange, while increasing the friction between the flange and the bottom support plate 11, thereby reducing the probability of relative displacement between the flange and the bottom support plate 11.

[0071] refer to Figure 2 , Figure 3 , Figure 4 , Fig.10 and Fig.11 As shown, a connecting shaft 120 is arranged on the right side of the sealing plate 20 connected to the semicircular cover 10 where the transfer plate 12 is located, and a connecting plate 121 is installed on the front and rear ends of the connecting shaft 120 through a pin shaft symmetrically rotated, and the connecting plates 121 are arranged alternately up and down. When two pipeline routes are arranged side by side, the connecting shaft 120 and the connecting plate 121 are placed as a whole between the left and right adjacent sealing plates 20 by manual means, and then the end of the connecting plate 121 away from the pin shaft connected to the connecting shaft 120 is sleeved from bottom to top on the lower end of the fastening bolt 21 adjacent to the connecting plate 121, and then the nut is installed to fix the connecting plate 12 1. At this time, the connecting plate 121 serves to connect and fix the adjacent main cover mechanism 1 and the outer sealing mechanism 2 as a whole, that is, the connecting plate 121 and the connecting shaft 120 as a whole enable the main cover mechanism 1 and the outer sealing mechanism 2 to be horizontally combined and connected as a whole. The installation operation of the connecting plate 121 can be carried out after the two pipeline routes are arranged, or it can be carried out during the process of the two pipeline routes being arranged. The advantage of installing the connecting plate 121 during the process of the two pipeline routes being arranged is that the connecting plate 121 can play a guiding role in the installation between the adjacent main cover mechanism 1 and the outer sealing mechanism 2 as a whole.

[0072] refer to Figure 2 and Figure 3As shown, the connecting shaft 120 includes a No. 1 shaft 122, a No. 2 shaft 123 and a connecting buckle 124. A sliding groove is provided at the upper end of the No. 1 shaft 122, and the No. 2 shaft 123 is slidably installed in the sliding groove. The upper end of the No. 2 shaft 123 is located outside the sliding groove. The connecting section of the No. 1 shaft 122 and the No. 2 shaft 123 is sleeved with a connecting buckle 124. After the connecting plate 121 on one side of the connecting shaft 120 has been connected with the fastening bolt 21, the bolt of the connecting buckle 124 is manually loosened, and then the No. 1 shaft 122 and the No. 2 shaft 123 are moved relative to or oppositely. When the No. 1 shaft 122 and the No. 2 shaft 123 move relative to each other, the total length of the two is reduced, and the connecting plate 121 connected with the fixing bolt 15 is connected to the No. 1 shaft Driven by the No. 1 shaft 122 and the No. 2 shaft 123, the connecting plate 121 rotates toward the connecting buckle 124. After the connecting plate 121 rotates a certain angle, the connecting buckle 124 is tightened manually to prevent the No. 1 shaft 122 and the No. 2 shaft 123 from moving any further. At this time, the overall lateral size of the connecting plate 121 and the connecting shaft 120 increases, and then the angle of the remaining connecting plate 121 is adjusted, and then the remaining connecting plate 121 is connected to the fastening bolt 21. When the No. 1 shaft 122 and the No. 2 shaft 123 move in opposite directions, the overall lateral size of the connecting plate 121 and the connecting shaft 120 decreases. In summary, the overall lateral size of the connecting shaft 120 and the connecting plate 121 can be adaptively adjusted according to the distance between the sealing plates 20 on the adjacent pipeline lines.

[0073] refer to Fig.10 and Fig.11 As shown, a telescopic plate 125 is arranged on the left side of the connecting shaft 120, and connecting through holes are opened at the front and rear ends of the telescopic plate 125. The diameter of the connecting through hole is equal to the diameter of the fastening bolt 21. The telescopic plate 125 is located below the sealing plate 20, and the connection and fixation between the adjacent main cover mechanisms 1 and the outer sealing mechanism 2 as a whole on the same pipeline route can be achieved through the telescopic plate 125. The specific operation is: manually stretch the telescopic plate 125 until the connecting through holes at both ends are located below the fixing bolt 15, and then move the telescopic plate 125 upward so that the connecting through holes are sleeved on the lower end of the fixing bolt 15 from bottom to top, and then install the nut to fix the telescopic plate 125. At this time, the adjacent main cover mechanisms 1 and the outer sealing mechanism 2 as a whole are connected and fixed through the telescopic plate 125. At the same time, the telescopic plate 125 can also guide and limit the installation of the adjacent main cover mechanism 1 and the outer sealing mechanism 2 as a whole.

[0074] refer to Figure 1 and Figure 2As shown, a top plate 126 is arranged at the upper right of the telescopic plate 125, and L-shaped plates 127 are symmetrically installed at the front and rear ends of the top plate 126. The opposite sides of the vertical section of the L-shaped plate 127 are in contact with the outer surface of the semicircular cover shell 10 above the transfer plate 12. The horizontal section of the L-shaped plate 127 is provided with a clamping hole, and the diameter of the clamping hole is equal to the diameter of the bolt of the fastening buckle 23. The fastening buckle 23 is manually clamped on the pipe section where the rubber sealing layer 22 is located and the opposite side of the fastening buckle 23 is as close as possible to the opposite side of the sealing plate 20, and then the fastening buckle 23 is installed first to match the rubber sealing layer 22. The bolts used are then used to clamp the top plate 126 and the L-shaped plate 127 as a whole on the semicircular cover shell 10, and the clamping holes are connected with the bolts used in conjunction with the fastening buckles 23, and then the nuts are installed to lock the fastening buckles 23. The L-shaped plate 127 is clamped between the nut and the upper end of the buckle, and the top plate 126 is tightly attached to the upper surface of the semicircular cover shell 10. The top plate 126, the L-shaped plate 127 and the fastening buckle 23 as a whole can further improve the connection tightness between the rubber sealing layer 22 and the pipeline and the sealing plate 20, and at the same time, it is also beneficial to improve the connection firmness between the overall sealing structure and the pipeline.

[0075] refer to Figure 1 and Figure 2 As shown, the lower end of the top plate 126 is an upwardly protruding arc structure, and a sponge block is installed on the lower end surface of the top plate 126. The sponge block can increase the friction between the top plate 126 and the semicircular cover shell 10, thereby reducing the probability of the top plate 126 being offset.

[0076] refer to Figure 1 , Figure 2 and Figure 5 As shown, the outer sealing mechanism 2 includes a sealing plate 20, a fastening bolt 21, a rubber sealing layer 22 and a fastening buckle 23. The sealing plate 20 is mounted on the opposite ends of the semicircular cover shell 10. The middle parts of the front and rear ends of the sealing plate 20 are semicircular ring structures. The semicircular ring structure is concentric with the semicircular through groove. Fastening bolts 21 are installed between the sealing plates 20 by threaded fitting. The fastening bolts 21 are arranged at equal distances along the circumference of the sealing plate 20. Rubber sealing layers 22 are arranged on the front and rear sides of the sealing plate 20. The vertical section in the middle of the rubber sealing layer 22 is a stepped structure. Fastening buckles 23 are arranged on the opposite sides of the rubber sealing layer 22.

[0077] The remaining cover shell is manually docked with the fixed semicircular cover shell 10, and then the rubber sealing layer 22 is sleeved on the side end of the sealing plate 20, and the opposite side of the rubber sealing layer 22 is placed on the upper end of the sealing plate 20, and the middle part of the opposite side of the rubber sealing layer 22 is tightly attached to the pipeline surface, and then the fastening bolts 21 are installed. The fastening bolts 21 fix the two sealing plates 20 while fixing the opposite side of the rubber sealing layer 22 to the upper end of the sealing plate 20, and then the fastening buckle 23 is sleeved on the pipeline section where the rubber sealing layer 22 is located and the opposite side of the fastening buckle 23 is as tightly attached to the opposite side of the sealing plate 20 as possible, and then the bolts provided by the fastening buckle 23 are installed to fix the buckle. The advantage of setting the rubber sealing layer 22 and the fastening buckle 23 is that the connection between the sealing plate 20 and the pipeline can be externally sealed, thereby improving the sealing effect of the overall sealing structure, and at the same time, the rubber sealing layer 22 can increase the friction between the overall sealing structure and the pipeline, thereby facilitating improving the connection firmness between the overall sealing structure and the pipeline.

[0078] When using the butt-flange metal sealing cover structure, the specific operating steps are as follows:

[0079] The first step is to fix the two pipes through flange connection. The flanges are connected by matching flange bolts, and the installation directions of the two flange bolts symmetrically arranged on the upper end of the flange with respect to the pipe are opposite.

[0080] In the second step, the semicircular cover 10 with the transfer plate 12 is manually clamped to the pipeline, and the lower ends of the flanges are located in the semicircular cover 10. Then the worker holds the semicircular cover 10 with the clamping sleeve.

[0081] The third step is to manually rotate the transfer plate 12 toward the direction of the pipeline until the transfer plate 12 is pressed against the bolts adjacent to it, and then manually make the U-shaped clamping plate 14 clamp the flange bolts in contact with the transfer plate 12 and complete the clamping with the transfer plate 12, that is, the flange bolts in contact with the transfer plate 12 are clamped between the horizontal section of the U-shaped clamping plate 14 and the transfer plate 12, and then install the fixing bolts 15 to prevent the U-shaped clamping plate 14 from detaching from the transfer plate 12.

[0082] The fourth step is to manually lengthen the telescopic rod 16 and press the rubber suction block 17 onto the pipe so that the rubber suction block 17 is firmly attached to the pipe. At this point, the semicircular cover 10 where the transfer plate 12 is located is relatively fixed to the flange and the pipe.

[0083] The fifth step is to manually connect the remaining cover shell with the fixed semicircular cover shell 10, so that the flange is completely wrapped by the shell formed by the two semicircular cover shells 10, and then put the rubber seal 22 on the side end of the sealing plate 20, and the opposite side of the rubber seal 22 is placed on the upper end of the sealing plate 20. The middle part of the opposite side of the rubber seal 22 is close to the surface of the pipeline, and then install the fastening bolts 21. The fastening bolts 21 fix the two sealing plates 20 while fixing the opposite side of the rubber seal 22 to the upper end of the sealing plate 20.

[0084] In the sixth step, the fastening buckle 23 is then inserted into the pipe section where the rubber sealing layer 22 is located and the opposite side of the fastening buckle 23 is as close as possible to the opposite side of the sealing plate 20, and then the bolts provided with the fastening buckle 23 are installed to fix the buckle. At this point, the sealing work of the flange and the butt end of the pipe is completed.

[0085] When two pipeline routes are arranged side by side, the connecting shaft 120 and the connecting plate 121 are placed as a whole between the left and right adjacent sealing plates 20 by manual means, and the connecting plate 121 on one side of the connecting shaft 120 is connected with the fastening bolt 21 by manual means, and then the bolts of the connecting buckle 124 are loosened manually, and then the No. 1 shaft 122 and the No. 2 shaft 123 are moved relative to or oppositely. When the No. 1 shaft 122 and the No. 2 shaft 123 move relative to each other, the total length of the two is reduced, and the connecting plate 121 connected with the fastening bolt 21 is driven by the No. 1 shaft 122 and the No. 2 shaft 123 to move toward the connecting buckle 124. After the connecting plate 121 rotates to a certain angle, the connecting buckle 124 is tightened manually to prevent the No. 1 shaft rod 122 and the No. 2 shaft rod 123 from moving any further. At this time, the overall lateral size of the connecting plate 121 and the connecting shaft rod 120 increases, and then the angle of the remaining connecting plate 121 is adjusted, and then the remaining connecting plate 121 is connected to the fastening bolt 21. When the No. 1 shaft rod 122 and the No. 2 shaft rod 123 move in opposite directions, the overall lateral size of the connecting plate 121 and the connecting shaft rod 120 decreases, and the connecting plate 121 and the connecting shaft rod 120 as a whole enable the main cover mechanism 1 and the outer sealing mechanism 2 to be horizontally combined and connected as a whole.

[0086] The connection and fixation between the adjacent main cover mechanisms 1 and the outer sealing mechanisms 2 as a whole on the same pipeline route can be achieved through the telescopic plate 125. The specific operation is: manually stretch the telescopic plate 125 until the connecting through holes at both ends are located below the fastening bolts 21, and then move the telescopic plate 125 upward so that the connecting through holes are sleeved on the lower ends of the fastening bolts 21 from bottom to top, and then install the nuts to fix the telescopic plate 125. At this time, the connection and fixation between the adjacent main cover mechanisms 1 and the outer sealing mechanisms 2 as a whole are completed through the telescopic plate 125.

[0087] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A butt flange metal sealing cover structure, used for sealing a flange installed on a pipeline, characterized in that: The butt-jointed flange metal sealing cover structure comprises a main cover mechanism (1) and an external sealing mechanism (2), wherein the external sealing mechanism (2) is fixed to the outside of the main cover mechanism (1) and is used to seal the main cover mechanism (1); the main cover mechanism (1) comprises a semicircular cover shell (10) and a bottom support plate (11), a transfer plate (12), an ear block (13), a U-shaped clamping plate (14), a fixing bolt (15), a telescopic round rod (16) and a rubber suction block (17) located inside the semicircular cover shell (10); The number of the semicircular cover shells (10) is at least two, and the two semicircular cover shells (10) are symmetrically arranged up and down, and a receiving cavity for receiving the flange is formed inside; a semicircular through groove for the pipe to extend into is provided in the middle of the semicircular cover shell (10); the bottom support plate (11) is supported by the semicircular cover shell (10); one side of the bottom support plate (11) matches the shape of the flange and is used to abut the flange; one end of the ear block (13) is connected to the inner side wall of the semicircular cover shell (10), and the other end is rotatably connected to the transfer plate (12); the U-shaped clamping plate (14) is installed on the transfer plate The end of the U-shaped card plate (12) away from the ear block (13), the horizontal section in the middle of the U-shaped card plate (14) is connected to the telescopic round rod (16), and the end of the telescopic round rod (16) away from the U-shaped card plate (14) is connected to the rubber suction block (17) for abutting the pipeline; the vertical sections on both sides of the U-shaped card plate (14) are connected to the fixing bolts (15), and the fixing bolts (15) abut against the side of the transfer plate (12) away from the telescopic round rod (16); a fixing hole for fixing the flange bolt is formed between the U-shaped card plate (14) and the transfer plate (12); Both ends of the bottom support plate (11) are provided with elastic plates (111) in a circular arc structure, the elastic plates (111) protrude toward the outside of the semicircular cover (10), an elastic clamping plate (112) is provided at one end of the elastic plate (111) away from the bottom support plate (11), the elastic clamping plate (112) is located on one side of the bottom support plate (11) for abutting against the flange, the elastic clamping plate (112) is used for abutting against the flange, and is tangent to the outer side of the flange; The outer sealing mechanism (2) comprises a sealing plate (20), a fastening bolt (21), a rubber sealing layer (22) and a fastening buckle (23); a through hole is provided in the middle of a main body of the sealing plate (20); the main cover mechanism (1) is located in the through hole; the sealing plate (20) is located outside a connection between two semicircular cover shells (10); a semicircular ring structure is provided in the middle of both sides of the sealing plate (20); the semicircular ring structure is cocentric with the semicircular through groove; the number of the sealing plates (20) is at least two; the two sealing plates (20) are fixed by fastening bolts (21) arranged along the circumference of the sealing plates (20); a rubber sealing layer (22) is provided on the outside of the sealing plate (20); the rubber sealing layer (22) is distributed on the upper and lower ends, the outside and the surface of the pipeline of the sealing plate (20); a fastening buckle (23) is also provided on the outside of the rubber sealing layer (22); the fastening buckle (23) is used to fix the rubber sealing layer (22) and the pipeline.

2. A butt flange metal sealing cover structure according to claim 1, characterized in that: A spring telescopic rod (110) is installed on one side of the bottom support plate (11), wherein the fixed end of the spring telescopic rod (110) is connected to the inner wall of the semicircular cover (10), and the telescopic end is connected to the bottom support plate (11).

3. The butt flange metal sealing cover structure according to claim 1, characterized in that: The outer sealing mechanism (2) further comprises a top plate (126), with L-shaped plates (127) symmetrically mounted at both ends of the top plate (126), the top plate (126) being located at the top of the semicircular cover shell (10), the vertical section of the L-shaped plate (127) being in contact with the side surface of the semicircular cover shell (10), and the horizontal section of the L-shaped plate (127) being provided with a snap-fitting hole, the snap-fitting hole being penetrated and fixed by the fastening buckle (23).

4. A butt flange metal sealing cover structure according to claim 3, characterized in that: One end of the top plate (126) facing the semicircular cover shell (10) is an upwardly protruding arc structure, and a sponge block is installed on one end of the top plate (126) facing the semicircular cover shell (10).

5. The butt-jointed flange metal sealing cover structure according to claim 1, characterized in that: The butt-jointed flange metal sealing cover structure further comprises a connecting shaft (120), both ends of which are rotatably connected to connecting plates (121), and the connecting plates (121) are further rotatably connected to the sealing plate (20). The connecting shaft (120) is a structure with telescopic and locking functions.

6. A butt flange metal sealing cover structure according to claim 5, characterized in that: The connecting shaft (120) comprises a first shaft (122), a second shaft (123) and a connecting buckle (124); a slide groove is provided at the upper end of the first shaft (122), the second shaft (123) is mounted on the slide groove, and the connecting buckle (124) is sleeved at the connection between the first shaft (122) and the second shaft (123).

7. The butt flange metal sealing cover structure according to claim 1, characterized in that: The butt flange metal sealing cover structure also includes a telescopic plate (125), the front and rear ends of the telescopic plate (125) are provided with connecting through holes, the connecting through holes cooperate with the fastening bolts (21), and the sealing plate (20) is connected to the telescopic plate (125) by the fastening bolts (21) passing through the connecting through holes.

8. The butt flange metal sealing cover structure according to claim 1, characterized in that: A rubber block (113) is installed on one side of the bottom support plate (11) for abutting against the flange.

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