Insulating flange connecting structure

Abstract

The utility model discloses an insulating flange connecting structure, which comprises a flange assembly, a sleeve assembly, an insulating assembly and a fastening assembly, the flange assembly comprises a first flange and a second flange which are oppositely arranged, the sleeve assembly comprises a first sleeve and a second sleeve, and the body of the first sleeve and the body of the second sleeve are respectively positioned in the first flange and the second flange; an insulation sealing gasket is arranged between the inner end faces of the pipe heads of the first sleeve and the second sleeve, the insulation assembly comprises a second insulation part, the insulation sealing gasket is sleeved with the second insulation part, and the second insulation part is located between the outer circular face of the pipe head of the first sleeve and the inner circular face of the pipe head of the second sleeve. According to the insulating flange, the insulating sealing gasket can play a role in sealing between the first sleeve and the second sleeve, and the second insulating part can limit the insulating sealing gasket in the radial direction, so that the insulating sealing gasket is prevented from being extruded out under the condition that the pipeline pressure is too large or the fastening force is too large, and the pressure bearing capacity of the insulating flange is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of insulating flange connection, in particular to an insulating flange connection structure. Background Art

[0002] An insulating flange is a general term for pipe flange joints that provide both sealing and electrical insulation. These flanges typically consist of a pair of flanges with an insulating gasket positioned between their flange faces. However, excessive pipeline pressure or tightening force can cause the gasket to be squeezed out of the flange faces, compromising the sealing performance of the insulating flange. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides an insulating flange connection structure, which can improve the pressure bearing capacity of the insulating flange.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An insulating flange connection structure, comprising:

[0006] A flange assembly, the flange assembly comprising a first flange and a second flange arranged opposite to each other;

[0007] The sleeve assembly includes a first sleeve and a second sleeve, wherein the pipe bodies of the first sleeve and the second sleeve are respectively located in the first flange and the second flange, and the pipe heads of the first sleeve and the second sleeve are fastened between the first flange and the second flange;

[0008] An insulating sealing gasket is provided between the inner end surfaces of the first sleeve and the second sleeve;

[0009] The insulating assembly includes a first insulating member and a second insulating member. The first insulating member is provided between the first flange and the first sleeve and between the second flange and the second sleeve. The second insulating member is sleeved outside the insulating sealing gasket and is located between the outer circumferential surface of the tube head of the first sleeve and the inner circumferential surface of the tube head of the second sleeve.

[0010] The fastening assembly is insulated and fastened to the first flange and the second flange.

[0011] The beneficial effects of adopting the above technical solution are: insulation treatment is performed between the first sleeve and the first flange, between the second sleeve and the second flange, between the first sleeve and the second sleeve, between the fastening assembly and the first flange, and between the fastening assembly and the second flange, which is beneficial to improving the insulation redundancy of the insulating flange, thereby improving the overall insulation performance of the insulating flange; in addition, the insulating sealing gasket can have a sealing effect between the first sleeve and the second sleeve, and the second insulating part can radially limit the insulating sealing gasket to avoid the insulating sealing gasket from being squeezed out when the pipeline pressure is too high or the fastening force is too high, thereby improving the pressure bearing capacity of the insulating flange.

[0012] In one embodiment, the first insulating member includes an insulating ring, and an insulating ring is provided between the outer end surface of the pipe head of the first sleeve and the end surface of the first flange, and between the outer end surface of the pipe head of the second sleeve and the end surface of the second flange.

[0013] The beneficial effects of adopting the above technical solution are: the insulating ring between the outer end face of the pipe head of the first sleeve and the end face of the first flange can play an insulating effect between the outer end face of the pipe head of the first sleeve and the end face of the first flange; the insulating ring between the outer end face of the pipe head of the second sleeve and the end face of the second flange can play an insulating effect between the outer end face of the pipe head of the second sleeve and the end face of the second flange.

[0014] In one embodiment, the first insulating member includes a first insulating sleeve, and the first sleeve and the second sleeve are both sleeved with the first insulating sleeve.

[0015] The beneficial effects of adopting the above technical solution are: the first insulating sleeve outside the first sleeve body can play an insulating effect between the first sleeve body and the inner circular surface of the first flange; the first insulating sleeve outside the second sleeve body can play an insulating effect between the second sleeve body and the inner circular surface of the second flange.

[0016] In one embodiment, one end of the first insulating sleeve abuts against the insulating ring, and the thickness of the first flange and the second flange both match the length of the first insulating sleeve.

[0017] The beneficial effects of adopting the above technical solution are: such an arrangement allows the first insulating sleeve to be fully covered between the area where the first sleeve body and the inner circular surface of the first flange are opposite, thereby facilitating the insulation effect between the first sleeve body and the inner circular surface of the first flange; such an arrangement also allows the first insulating sleeve to be fully covered between the area where the second sleeve body and the inner circular surface of the second flange are opposite, thereby facilitating the insulation effect between the second sleeve body and the inner circular surface of the second flange.

[0018] In one embodiment, insulating rings are coaxially arranged on the first sleeve and the second sleeve, and the outer diameters of the first sleeve and the second sleeve match the inner diameters of the insulating rings.

[0019] The beneficial effect of adopting the above technical solution is that this arrangement facilitates the abutment between the first insulating sleeve and the insulating ring.

[0020] In one embodiment, the second insulating member includes a second insulating sleeve, and one end of the second insulating sleeve away from the second sleeve abuts against the insulating ring or the first flange.

[0021] The beneficial effect of adopting the above technical solution is that the insulating ring or the first flange can axially limit the end of the second insulating sleeve away from the second sleeve, so as to facilitate fixing the second insulating sleeve outside the insulating sealing gasket.

[0022] In one embodiment, an insulating sealing gasket is coaxially arranged between the first sleeve and the second sleeve, and the inner diameter and outer diameter of the insulating sealing gasket respectively match the inner diameter and outer diameter of the tube head of the first sleeve.

[0023] The beneficial effect of adopting the above technical solution is: such an arrangement allows the inner end faces of the first sleeve and the second sleeve to be filled with insulating sealing gaskets, which is conducive to ensuring the insulation and sealing effects between the inner end faces of the first sleeve and the second sleeve.

[0024] In one embodiment, a plurality of connecting holes are provided on the first flange and the second flange, and the fastening assembly includes a plurality of studs passing through the connecting holes on the first flange and the second flange, an insulating tube is sleeved between the studs and the connecting holes, nuts are threadedly connected at both ends of the studs, and insulating pads sleeved on the studs are provided between the nut and the first flange and between the nut and the second flange.

[0025] The beneficial effects of adopting the above technical solution are as follows: the first flange and the second flange are fastened together by a number of studs and nuts at both ends of the studs, and the first flange and the studs, as well as the second flange and the studs, can be insulated by insulating tubes, and the nut and the first flange, as well as the nut and the second flange, can be insulated by insulating pads, which is conducive to insulating and fastening the first flange and the second flange.

[0026] In one embodiment, a flat washer and a spring washer sleeved on the stud are provided between the nut and the insulating washer.

[0027] In one embodiment, an insulating tube is sleeved on the stud.

[0028] The beneficial effect of adopting the above technical solution is that the two ends of this insulating tube can be respectively located in the connecting holes of the first flange and the second flange to ensure that the insulating tube has an insulating effect between the stud and the connecting hole of the first flange and between the stud and the connecting hole of the second flange.

[0029] The beneficial effects of the present invention are:

[0030] Insulation is performed between the first sleeve and the first flange, between the second sleeve and the second flange, between the first sleeve and the second sleeve, between the fastening assembly and the first flange, and between the fastening assembly and the second flange. This is beneficial to improving the insulation redundancy of the insulating flange, thereby improving the overall insulation performance of the insulating flange; in addition, the insulating sealing gasket can have a sealing effect between the first sleeve and the second sleeve, and the second insulating member can radially limit the insulating sealing gasket to prevent the insulating sealing gasket from being squeezed out when the pipeline pressure is too high or the fastening force is too high, thereby improving the pressure bearing capacity of the insulating flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0032] in:

[0033] Figure 1 Shows a schematic structural diagram of the utility model;

[0034] In the drawings, like reference numerals are used for like parts, but the drawings are not necessarily true to scale.

[0035] Reference numerals:

[0036] 1-first flange, 2-second flange, 3-first sleeve, 4-second sleeve, 5-insulating sealing gasket, 6-second insulating sleeve, 7-insulating ring, 8-first insulating sleeve, 9-stud, 10-insulating tube, 11-nut, 12-insulating gasket, 13-flat washer, 14-spring washer. DETAILED DESCRIPTION

[0037] The present invention will be further described below with reference to the accompanying drawings.

[0038] The utility model provides an insulating flange connection structure, such as Figure 1 As shown, it includes:

[0039] The flange assembly includes a first flange 1 and a second flange 2 arranged opposite to each other;

[0040] The casing assembly includes a first casing 3 and a second casing 4. The pipe bodies of the first casing 3 and the second casing 4 are respectively located in the first flange 1 and the second flange 2, and the pipe heads of the first casing 3 and the second casing 4 are fastened between the first flange 1 and the second flange 2;

[0041] An insulating sealing gasket 5 is provided between the inner end surfaces of the first sleeve 3 and the second sleeve 4;

[0042] The insulation assembly includes a first insulation member and a second insulation member. The first insulation member is provided between the first flange 1 and the first sleeve 3 and between the second flange 2 and the second sleeve 4. The second insulation member is sleeved on the outside of the insulating sealing gasket 5 and is located between the outer circumferential surface of the tube head of the first sleeve 3 and the inner circumferential surface of the tube head of the second sleeve 4.

[0043] The fastening assembly is insulated and fastened to the first flange 1 and the second flange 2 .

[0044] It can be understood that insulation is performed between the first sleeve 3 and the first flange 1, between the second sleeve 4 and the second flange 2, between the first sleeve 3 and the second sleeve 4, between the fastening assembly and the first flange 1, and between the fastening assembly and the second flange 2. That is, when two of the components are short-circuited, the overall insulation performance of the insulating flange is not affected, which is beneficial to improving the insulation redundancy of the insulating flange, thereby improving the overall insulation performance of the insulating flange.

[0045] In addition, the insulating sealing gasket 5 can have a sealing effect between the first sleeve 3 and the second sleeve 4, and the second insulating member can radially limit the insulating sealing gasket 5 to prevent the insulating sealing gasket 5 from being squeezed out when the pipeline pressure is too high or the tightening force is too high, thereby improving the pressure bearing capacity of the insulating flange.

[0046] In one embodiment, the first insulating member includes an insulating ring 7 , and insulating rings 7 are provided between the outer end face of the pipe head of the first sleeve 3 and the end face of the first flange 1 , and between the outer end face of the pipe head of the second sleeve 4 and the end face of the second flange 2 .

[0047] It can be understood that the insulating ring 7 between the outer end face of the pipe head of the first sleeve 3 and the end face of the first flange 1 can play an insulating effect between the outer end face of the pipe head of the first sleeve 3 and the end face of the first flange 1; the insulating ring 7 between the outer end face of the pipe head of the second sleeve 4 and the end face of the second flange 2 can play an insulating effect between the outer end face of the pipe head of the second sleeve 4 and the end face of the second flange 2.

[0048] In one embodiment, the first insulating member includes a first insulating sleeve 8 , and the first sleeve 3 and the second sleeve 4 are both sleeved with the first insulating sleeve 8 .

[0049] It can be understood that the first insulating sleeve 8 outside the first sleeve 3 can play an insulating effect between the first sleeve 3 and the inner circular surface of the first flange 1; the first insulating sleeve 8 outside the second sleeve 4 can play an insulating effect between the second sleeve 4 and the inner circular surface of the second flange 2.

[0050] In one embodiment, one end of the first insulating sleeve 8 abuts against the insulating ring 7 , and the thicknesses of the first flange 1 and the second flange 2 both match the length of the first insulating sleeve 8 .

[0051] It can be understood that this arrangement allows the first insulating sleeve 8 to be fully covered between the area between the first sleeve 3 and the inner circular surface of the first flange 1, which is conducive to ensuring the insulation effect between the first sleeve 3 and the inner circular surface of the first flange 1; this arrangement also allows the first insulating sleeve 8 to be fully covered between the area between the second sleeve 4 and the inner circular surface of the second flange 2, which is conducive to ensuring the insulation effect between the second sleeve 4 and the inner circular surface of the second flange 2.

[0052] In one embodiment, an insulating ring 7 is coaxially provided on the first sleeve 3 and the second sleeve 4 , and the outer diameters of the first sleeve 3 and the second sleeve 4 match the inner diameter of the insulating ring 7 to facilitate the abutment between the first insulating sleeve 8 and the insulating ring 7 .

[0053] In one embodiment, the second insulating member includes a second insulating sleeve 6 , and one end of the second insulating sleeve 6 away from the second sleeve 4 abuts against the insulating ring 7 or the first flange 1 .

[0054] It is understandable that the insulating ring 7 or the first flange 1 can axially limit the end of the second insulating sleeve 6 away from the second sleeve 4 to facilitate fixing the second insulating sleeve 6 to the outside of the insulating sealing gasket 5.

[0055] In one embodiment, an insulating sealing gasket 5 is coaxially disposed between the first sleeve 3 and the second sleeve 4 , and the inner diameter and outer diameter of the insulating sealing gasket 5 match the inner diameter and outer diameter of the tube head of the first sleeve 3 , respectively.

[0056] It is understandable that such an arrangement allows the insulating sealing gasket 5 to be fully distributed between the inner end faces of the tube heads of the first sleeve 3 and the second sleeve 4, so as to ensure the insulation and sealing effects between the inner end faces of the tube heads of the first sleeve 3 and the second sleeve 4.

[0057] In one embodiment, a plurality of connecting holes are provided on the first flange 1 and the second flange 2, and the fastening assembly includes a plurality of studs 9 passing through the connecting holes on the first flange 1 and the second flange 2, an insulating tube 10 is sleeved between the studs 9 and the connecting holes, and nuts 11 are threadedly connected at both ends of the studs 9. Insulating pads 12 sleeved on the studs 9 are provided between the nut 11 and the first flange 1 and between the nut 11 and the second flange 2.

[0058] It can be understood that the first flange 1 and the second flange 2 are fastened together by a plurality of studs 9 and nuts 11 at both ends of the studs 9, and the first flange 1 and the studs 9, as well as the second flange 2 and the studs 9, can be insulated by insulating tubes 10, and the nuts 11 and the first flange 1, as well as the nuts 11 and the second flange 2, can be insulated by insulating pads 12, thereby facilitating the insulated and fastened connection of the first flange 1 and the second flange 2.

[0059] In one embodiment, a flat washer 13 and a spring washer 14 sleeved on the stud 9 are provided between the nut 11 and the insulating washer 12 .

[0060] In one embodiment, an insulating tube 10 is sleeved on the stud 9 .

[0061] It can be understood that the two ends of this insulating tube 10 can be respectively located in the connecting holes of the first flange 1 and the second flange 2 to ensure that the insulating tube 10 has an insulating effect between the stud 9 and the connecting hole of the first flange 1 and between the stud 9 and the connecting hole of the second flange 2.

[0062] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0063] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It should be understood that many modifications may be made to the illustrative embodiments, and that other arrangements may be devised, without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in ways other than those described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be employed in conjunction with other described embodiments.

Claims

1. An insulating flange connection structure, characterized in that: include: A flange assembly, comprising a first flange (1) and a second flange (2) arranged opposite to each other; A sleeve assembly, comprising a first sleeve (3) and a second sleeve (4), wherein the pipe bodies of the first sleeve (3) and the second sleeve (4) are respectively located in the first flange (1) and the second flange (2), and the pipe heads of the first sleeve (3) and the second sleeve (4) are fastened between the first flange (1) and the second flange (2); An insulating sealing gasket (5), the insulating sealing gasket (5) being provided between the inner end surfaces of the tube heads of the first sleeve (3) and the second sleeve (4); An insulating component, the insulating component comprising a first insulating member and a second insulating member, the first insulating member being provided between the first flange (1) and the first sleeve (3) and between the second flange (2) and the second sleeve (4), the second insulating member being sleeved outside the insulating sealing gasket (5), and the second insulating member being located between the outer circumferential surface of the tube head of the first sleeve (3) and the inner circumferential surface of the tube head of the second sleeve (4); A fastening assembly is insulated and fastened to the first flange (1) and the second flange (2).

2. The insulating flange connection structure according to claim 1, characterized in that: The first insulating member comprises an insulating ring (7), and the insulating ring (7) is provided between the outer end face of the tube head of the first sleeve (3) and the end face of the first flange (1), and between the outer end face of the tube head of the second sleeve (4) and the end face of the second flange (2).

3. The insulating flange connection structure according to claim 2, characterized in that: The first insulating member comprises a first insulating sleeve (8), and the first insulating sleeve (8) is sleeved outside the tube bodies of the first sleeve (3) and the second sleeve (4).

4. The insulating flange connection structure according to claim 3, characterized in that: One end of the first insulating sleeve (8) abuts against the insulating ring (7), and the thickness of the first flange (1) and the second flange (2) both match the length of the first insulating sleeve (8).

5. An insulating flange connection structure according to claim 2 or 4, characterized in that: The insulating ring (7) is coaxially arranged on the first sleeve (3) and the second sleeve (4), and the outer diameters of the first sleeve (3) and the second sleeve (4) are matched with the inner diameter of the insulating ring (7).

6. The insulating flange connection structure according to claim 2, characterized in that: The second insulating member comprises a second insulating sleeve (6), and one end of the second insulating sleeve (6) away from the second sleeve (4) abuts against the insulating ring (7) or the first flange (1).

7. The insulating flange connection structure according to claim 1, characterized in that: The insulating sealing gasket (5) is coaxially arranged between the first sleeve (3) and the second sleeve (4), and the inner diameter and outer diameter of the insulating sealing gasket (5) respectively match the inner diameter and outer diameter of the tube head of the first sleeve (3).

8. The insulating flange connection structure according to claim 1, characterized in that: The first flange (1) and the second flange (2) are both provided with a plurality of connection holes, and the fastening assembly comprises a plurality of studs (9) passing through the connection holes on the first flange (1) and the second flange (2), an insulating tube (10) is sleeved between the studs (9) and the connection holes, nuts (11) are threadedly connected at both ends of the studs (9), and insulating pads (12) sleeved on the studs (9) are provided between the nuts (11) and the first flange (1) and between the nuts (11) and the second flange (2).

9. The insulating flange connection structure according to claim 8, characterized in that: A flat washer (13) and a spring washer (14) sleeved on the stud (9) are provided between the nut (11) and the insulating washer (12).

10. The insulating flange connection structure according to claim 8, characterized in that: An insulating tube (10) is sleeved on the stud (9).

Images