A jacket flange

Abstract

A jacket flange comprises bolts, nuts, a convex jacket flange, a concave jacket flange, a first standard pipeline and a second pipeline with a diameter larger than that of the first pipeline, a convex jacket flange and a concave jacket flange, the inner end surface of the convex jacket flange is provided with two convex rings which mesh with two concave grooves on the inner end surface of the concave jacket flange, an inner sealing ring and an outer sealing ring are respectively provided between the two convex rings and the corresponding two concave grooves; the outer edges of the convex jacket flange and the concave jacket flange are provided with evenly distributed screw holes, bolts are provided to pass through the screw holes to fix the convex jacket flange and nuts are provided to fix the convex and concave jacket flanges; evenly distributed holes are provided between the two convex rings of the convex jacket flange and between the two concave grooves of the concave jacket flange; the first pipeline is fixed to the inner holes of the outer end surfaces of the convex jacket flange and the concave jacket flange, and the second pipeline is fixed within the outer sealing ring.

Description

Technical Field

[0001] The utility model relates to a flange, in particular to a flange with a jacket. Background Art

[0002] Flange is a fixing device at the connection of pipe fittings, valves, etc. CN104279383A discloses a threaded flange, which includes a flange body, a plurality of mounting holes are arranged circumferentially on the flange body, a pipeline hole is arranged in the middle of the flange body, and the pipeline hole includes an upper pipeline hole, a middle pipeline hole and a lower pipeline hole. The diameter of the upper pipeline hole is larger than the diameter of the lower pipeline hole. The inner wall of the lower pipeline hole is provided with an internal thread. The flange body is made of titanium steel material, and the outer surface of the flange body is provided with a galvanized layer. The threaded flange has the advantages of convenient connection and can avoid leakage.

[0003] When the pipe fittings are connected, the pipes on both sides are welded to the flanges, and the two flanges are axially connected by bolts. The existing pipe and flange joint are an integrated part, and it is not easy to axially align the connecting part of the flange joint with the mounting part of the mounting base.

[0004] CN202122704500.1 discloses a flange joint, including a flange and a joint part, wherein the flange has a through hole located in the middle and extending axially, and a connecting part located on the outer periphery of the through hole, wherein the through hole is used to be axially connected to the first pipeline of the first mounting base, and the connecting part is used to be axially connected to the mounting part of the first mounting base; the joint part has a through hole located in the middle and extending axially, wherein the through hole is used to be axially connected to the second pipeline of the second mounting base and the through hole of the flange respectively, and when the joint part is axially connected to the flange, the connecting part of the flange is located outside the peripheral wall of the joint part; the flange and the joint part are separately arranged, and the axially opposite surfaces of the two are radially extending planes. The flange joint has the advantage of being able to rotate conveniently in the circumferential direction.

[0005] The flange (Appendix B) in the existing technical standard (HG / T 20592-2009) is actually a bridging flange, and the outer layer steam bypasses the flange. When the flange of this structure is used for sulfur transportation, it cannot maintain a good temperature. The sulfur often solidifies and blocks at the flange, and the thermal insulation performance is poor. The utility model proposes a real jacket flange (also called a hole flange), which solves this problem and is easy to install and repair. Summary of the invention

[0006] The utility model aims to provide a flange with a jacket in view of the current state of the prior art, wherein the outer jacket can pass steam and the inner pipe can pass materials, and the flange has good temperature maintenance capability, so as to replace the existing bridging flange.

[0007] The technical scheme of the utility model is a jacket flange, comprising bolts, nuts, a convex jacket flange, a concave jacket flange, a first pipeline and a second pipeline with a diameter larger than that of the first pipeline, a convex jacket flange and a concave jacket flange, the inner end surface of the convex jacket flange is provided with two convex rings that mesh with two concave grooves on the inner end surface of the concave jacket flange, an inner sealing ring and an outer sealing ring are respectively provided between the two convex rings and the corresponding two concave grooves; the outer edges of the convex jacket flange and the concave jacket flange are provided with evenly distributed screw holes, bolts are provided to pass through the screw holes to fix the convex jacket flange and nuts to fix the convex and concave jacket flanges; evenly distributed holes are provided between the two convex rings of the convex jacket flange and between the two concave grooves of the concave jacket flange; the first pipeline is fixed to the inner holes of the outer end surfaces of the convex jacket flange and the concave jacket flange, and the second pipeline is fixed within the outer sealing ring.

[0008] The second (standard) pipe is sleeved outside the first (standard) pipe and is (welded) fixed on the two outer end surfaces of the convex jacket flange and the concave jacket flange; holes evenly distributed are provided between the two convex rings of the convex jacket flange and between the two concave grooves of the concave jacket flange, so that the second (standard) pipe concentrically sleeves the first (standard) pipe, and steam, etc., is passed between the two pipes. The first (standard) pipe is used to pass chemical raw materials, such as sulfur, which is used by the applicant. The second (standard) pipe is used to pass steam, and the first standard pipe is used to pass chemical raw materials, such as sulfur, which is used by the applicant.

[0009] Beneficial effects: The application effect of the utility model is excellent. For example, the applicant's thiophene device uses liquid sulfur as feed material, and the melting point of sulfur is 120°C. The existing cross-over flange (called jacket flange by the standard) cannot keep the sulfur melted, and the sulfur often solidifies and blocks at the flange. The pump often does not pump sulfur for one or two days due to blockage. The flange of the utility model solves this problem. The specifications of the outer pipe can control the steam at 4.5 to 5 kg, and there is never a problem. The pipeline is easy to disassemble and assemble, and has been used on the thiophene device for a long time. The utility model can be extended to a similar double-layer pipeline structure with an outer pipe for steam (heat transfer oil, etc.) insulation and an inner pipe for material, which can make the connection convenient. The utility model is a real jacket flange (also called a hole flange), which solves this problem and is easy to install and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 It is a three-dimensional schematic diagram of the upper surface of the convex jacket flange. DETAILED DESCRIPTION

[0012] As shown in the figure, 1 nut (M14 common type N), 2 outer sealing ring, 3 spring washer, 4 inner sealing ring, 5 concave jacket flange, 6 standard pipe, 7 standard pipe, 8 convex jacket flange, 9 ring gasket, 10 bolt (specification GB_FASTENER_BOLT_HHBCM14X65-C4). 8-1 convex jacket flange convex ring, 8-2 steam hole on convex jacket flange, 10-1 convex jacket flange screw hole.

[0013] The convex jacket flange has a convex surface on one side and a flat surface on the other side. There are two circular convex rings on the convex surface; the concave jacket flange has a concave surface on one side and a flat surface on the other side. There are two annular grooves on the concave surface (on the groove) and two convex rings on the corresponding convex surface are embedded in the annular grooves; the outer sealing ring and the inner sealing ring are first padded on the annular grooves. There are evenly distributed small holes of the same size and position between the two circular convex rings and the two annular grooves (for passing steam).

[0014] The outer edges of the convex jacket flange and the concave jacket flange are provided with evenly distributed screw holes, and the convex jacket flange and the concave jacket flange are fixed by bolts passing through the screw holes, and the bolts are fixed by nuts 1; the evenly distributed small holes can be aligned.

[0015] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Without departing from the purpose and spirit of the claims of the utility model, any simple changes, modifications and other changes to the structure of the utility model belong to the protection scope of the utility model.

Claims

1. A jacket flange, characterized in that: It includes bolts, nuts, convex jacket flange, concave jacket flange, a first pipeline and a second pipeline with a diameter larger than the first pipeline, a convex jacket flange and a concave jacket flange. The inner end surface of the convex jacket flange is provided with two convex rings that mesh with two concave grooves on the inner end surface of the concave jacket flange, and an inner sealing ring and an outer sealing ring are respectively provided between the two convex rings and the corresponding two concave grooves; the outer edges of the convex jacket flange and the concave jacket flange are provided with evenly distributed screw holes, bolts are provided through the screw holes to fix the convex jacket flange and nuts are provided to fix the convex and concave jacket flanges; evenly distributed holes are provided between the two convex rings of the convex jacket flange and between the two concave grooves of the concave jacket flange; the first pipeline is fixed to the inner hole of the outer end surface of the convex jacket flange and the concave jacket flange, and the second pipeline is fixed within the outer sealing ring.

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