Chemical pipe fitting with internal supporting structure

Abstract

The invention relates to the technical field of pipelines, in particular to a chemical pipe fitting with an internal supporting structure, which comprises a pipeline, a first flange plate and a second flange plate are respectively arranged at two ends of the pipeline, a plurality of reinforcing cross rods are fixed on the surface of the first flange plate, and a plurality of inner supporting rings are fixed among the plurality of reinforcing cross rods. A screw is fixed to the end, away from the first flange plate, of the reinforcing cross rod, after the screw penetrates through the second flange plate, a nut sleeves and is in threaded connection with a rod body of the screw, and bolt holes are formed in the surfaces of the first flange plate and the second flange plate; the chemical pipe fitting with the internal supporting structure has the beneficial effects that the supporting framework composed of the reinforcing transverse rods and the inner supporting rings is arranged in the pipeline, and the compressive strength of the pipe fitting is effectively improved. The internal supporting structure not only enhances the radial bearing capacity of the pipe fitting, but also can resist axial and bending loads to a certain extent, so that the overall stability of the pipe fitting is improved, and the service life of the pipe fitting is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of pipelines, and specifically to a chemical pipe fitting with an internal support structure. Background Art

[0002] In the chemical industry, pipe fittings are important components for fluid transmission, and their stability and sealing performance are crucial. Traditional chemical pipe fittings often rely solely on the thickness and material of the pipe wall to ensure the pressure-bearing capacity and sealing effect. However, in some high-pressure, high-temperature, or corrosive environments, this simple structure may not meet the requirements for long-term stable operation. To improve the compressive strength and sealing performance of pipe fittings, additional support structures or sealing measures are usually required.

[0003] Traditional support structures often add metal brackets or stiffeners outside the pipe fittings. Although this method improves the stability of the pipe fittings to a certain extent, it increases the installation complexity and cost, and may also have a negative impact on the fluid transmission efficiency of the pipe fittings. In addition, traditional sealing measures, such as using gaskets or sealants, although they can ensure the sealing performance to a certain extent, are prone to sealing failure due to aging, corrosion, etc. after long-term operation.

[0004] Therefore, there is an urgent need for a new structure of chemical pipe fittings that can both improve the compressive strength of the pipe fittings and ensure long-term sealing stability. Summary of the Invention

[0005] The purpose of the present invention is to provide a chemical pipe fitting with an internal support structure to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A chemical pipe fitting with an internal support structure, including a pipe. Flange one and flange two are respectively provided at both ends of the pipe. A plurality of reinforcing crossbars are fixed on the surface of flange one. A plurality of inner support rings are fixed between the plurality of reinforcing crossbars. One end of the reinforcing crossbar away from flange one is fixed with a screw rod. After the screw rod penetrates through flange two, a nut is sleeved and screwed on the rod body of the screw rod. Bolt holes are provided on the surfaces of both flange one and flange two.

[0007] Preferably, buckle grooves are provided on the surfaces of both flange one and flange two. The buckle grooves are circular grooves. Both ends of flange one are respectively inserted into the buckle grooves on the surfaces of flange one and flange two. A rubber sealing sleeve is fixed inside the buckle groove. The rubber sealing sleeve is a circular plate with a "C"-shaped cross-section. The rubber sealing sleeve is clamped between the buckle groove and the pipe to generate elastic deformation.

[0008] Preferably, the rod length of the reinforcing crossbar is less than the pipe length of the pipe. The plurality of inner support rings are arranged and distributed equidistantly and equally sized along the long side of the reinforcing crossbar. The reinforcing crossbar leans against the inner ring surface of the pipe.

[0009] Preferably, a reserved groove is provided on the side of the flange away from the pipeline, and the reserved groove is a circular groove. A through hole is provided on the surface of the reserved groove. There are multiple through holes, and the through holes correspond to the screw rod one by one. The screw rod passes through the through holes. After the nut is locked on the screw rod, the nut is located on the inner side of the reserved groove.

[0010] Preferably, a rubber retaining ring is sleeved and fixed on the inner ring surface of the reserved groove, and the outer ring surface of the rubber retaining ring abuts against the outer ring surface of the reserved groove.

[0011] Preferably, an assembling ring is fixed on the side of flange 2 away from the pipeline, and an assembling groove is opened on the side of flange 1 away from the pipeline. The assembling groove is an annular groove, and the assembling groove and the assembling ring match. The pipeline is provided with two flanges. After flange 1 and flange 2 are installed at both ends of the two pipelines, when the two pipelines are spliced ​​head to tail, the assembling ring on flange 2 at one end of the pipeline is inserted into the assembling groove set on the surface of flange 1 at the other end of the pipeline.

[0012] Preferably, the inner ring surface of the assembly groove and the outer ring surface of the assembly groove are both provided with a clamping groove.

[0013] The clamping groove is a circular ring groove, and rubber rings are fixed on the inner ring surface and the outer ring surface of the assembling ring. After the assembling ring is inserted into the corresponding assembling groove, the rubber ring is inserted into the corresponding clamping groove.

[0014] Preferably, an elastic plug is fixed in a groove on the side of the bolt hole on the second surface of the flange away from the pipe. The elastic plug is an arc-shaped piece. There are multiple elastic plugs, and the multiple elastic plugs are distributed in a circle with the bolt hole as the center axis. After the two pipes are spliced ​​end to end, the elastic plug on the second surface of the flange at one end of the pipe is inserted into the bolt hole set on the first surface of the flange at the other end of the pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The chemical pipe fitting with an internal support structure proposed by the present invention effectively improves the compressive strength of the pipe fitting by arranging a support skeleton composed of a reinforcing cross bar and an inner support ring inside the pipeline. This internal support structure not only enhances the radial bearing capacity of the pipe fitting, but also resists axial and bending loads to a certain extent, thereby improving the overall stability and service life of the pipe fitting. The support skeleton is fixed by the buckle groove and reserved groove on the flange, and there is no need to add additional brackets or reinforcing ribs to the outside of the pipe fitting. At the same time, the design of the assembly ring and the assembly groove makes the connection between pipes more convenient and reduces the difficulty and cost of installation. In addition, the replaceability of the elastic plug and the rubber ring also facilitates subsequent maintenance and overhaul work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the connection structure of the pipeline and the flange of the present invention;

[0019] Figure 3 It is a side view of the structure of the present invention;

[0020] Figure 4 for Figure 3 Structural cross-section view at AA in the middle;

[0021] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 6 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0023] Figure 7 This is a schematic diagram of the connection structure of the flange plate 1 and the reinforcing cross bar of the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of flange 2 of the present invention;

[0025] Fig. 9 This is a schematic diagram of the structure after two pipelines are connected in the present invention;

[0026] Fig.10 for Fig. 9 Top view of the structure;

[0027] Fig.11 for Fig.10 Structural cross-section view at the middle BB;

[0028] Fig.12 for Fig.11 Enlarged schematic diagram of the structure at point C in the middle.

[0029] In the figure: pipe 1, flange one 2, flange two 3, buckle groove 4, rubber sealing sleeve 5, reinforcing cross bar 6, inner support ring 7, reserved groove 8, through hole 9, screw 10, nut 11, rubber retaining ring 12, assembly ring 13, assembly groove 14, card slot 15, rubber ring 16, bolt hole 17, elastic plug 18. DETAILED DESCRIPTION

[0030] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit 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.

[0031] Please refer to Figure 1-Figure 12 , the present invention provides a technical solution: a chemical pipe fitting with an internal support structure, including a pipe 1. Flange plates one 2 and flange plates two 3 are respectively provided at both ends of the pipe 1. Buckle grooves 4 are formed on the surfaces of the flange plates one 2 and the flange plates two 3. The buckle grooves 4 are circular grooves. The two ends of the flange plates one 2 are respectively inserted into the buckle grooves 4 on the surfaces of the flange plates one 2 and the flange plates two 3. A rubber sealing sleeve 5 is fixed inside the buckle grooves 4. The rubber sealing sleeve 5 is a circular plate with a "匚"-shaped cross-section. The rubber sealing sleeve 5 is clamped between the buckle grooves 4 and the pipe 1 to generate elastic deformation; a plurality of reinforcing cross bars 6 are fixed on the surface of the flange plates one 2. A plurality of inner support rings 7 are fixed between the plurality of reinforcing cross bars 6. The rod length of the reinforcing cross bars 6 is less than the pipe length of the pipe 1. The plurality of inner support rings 7 are arranged and distributed at equal distances and equal sizes along the long side of the reinforcing cross bars 6. The reinforcing cross bars 6 lean against the inner ring surface of the pipe 1.

[0032] During use, flange plates one 2 and flange plates two 3 are installed at both ends of the pipe 1 to fix the two pipes 1 through flanges and bolts during connection. And reinforcing cross bars 6 are installed on the flange plates one 2. The plurality of reinforcing cross bars 6 and the plurality of inner support rings 7 form a support framework. The support framework is inserted into the pipe 1 to improve the compressive strength of the pipe 1.

[0033] A screw rod 10 is fixed at one end of the reinforcing cross bar 6 away from the flange plates one 2. After the screw rod 10 penetrates through the flange plates two 3, a nut 11 is sleeved and screwed on the rod body of the screw rod 10; a reserved groove 8 is formed on the side of the flange plates two 3 away from the pipe 1. The reserved groove 8 is a circular groove. A plurality of through holes 9 are formed on the surface of the reserved groove 8. There are a plurality of through holes 9, and the through holes 9 correspond to the screw rods 10 one by one. The screw rod 10 penetrates through the through holes 9. After the nut 11 is locked on the screw rod 10, the nut 11 is located inside the reserved groove 8; a rubber retaining ring 12 is sleeved and fixed on the inner ring surface of the reserved groove 8. The outer ring surface of the rubber retaining ring 12 abuts against the outer ring surface of the reserved groove 8.

[0034] During use, when the flange plates one 2 and the flange plates two 3 are respectively installed at both ends of the pipe 1, and both ends of the pipe 1 are respectively inserted into the buckle grooves 4 on the surfaces of the flange plates one 2 and the flange plates two 3, at this time the screw rod 10 passes through the through holes 9 and extends into the reserved groove 8. The rubber retaining ring 12 is lifted with a finger, and the nut 11 is sleeved and screwed on the corresponding screw rod 10. After the nut 11 is tightened, one end of the reinforcing cross bar 6 abuts against the surface of the flange plates two 3. The flange plates one 2 and the flange plates two 3 tightly clamp the pipe 1. At the same time, the support framework is installed in the pipe 1, and the flange plates one 2 and the flange plates two 3 are fixed on both sides of the pipe 1. The reason for installing the rubber sealing sleeve 5 in the buckle grooves 4 is to improve the sealing performance when the flange plates one 2 and the flange plates two 3 clamp the pipe 1. In this way, it is convenient to install the support framework with the flange plates one 2 and the flange plates two 3 on the pipe 1 as needed.

[0035] An assembling ring 13 is fixed on the side of the flange 2 3 away from the pipeline 1, and an assembling groove 14 is provided on the side of the flange 1 2 away from the pipeline 1. The assembling groove 14 is an annular groove, and the assembling groove 14 matches the assembling ring 13. The pipeline 1 is provided with two. After the flanges 1 2 and flanges 2 3 are installed at both ends of the two pipelines 1, when the two pipelines 1 are spliced ​​end to end, the assembling ring 13 on the flange 2 3 at the end of one pipeline 1 is inserted into the assembling groove 14 set on the surface of the flange 2 at the end of the other pipeline 1; the inner ring surface of the assembling groove 14 and the outer ring surface of the assembling groove 14 are provided with a clamping groove 15, and the clamping groove 15 is a circular groove. The inner ring surface and the outer ring surface of the assembling ring 13 are fixed with rubber rings 16. After the assembling ring 13 is inserted into the corresponding assembling groove 14, the rubber ring 16 is inserted into the corresponding clamping groove 15.

[0036] During use, when two pipes 1 are spliced ​​end to end, the assembling ring 13 is inserted into the corresponding assembling groove 14, and the rubber ring 16 is inserted into the corresponding clamping groove 15, so as to improve the sealing performance of the flange 1 2 and the flange 2 3 after being fixed by bolts.

[0037] Bolt holes 17 are provided on the surfaces of flange 1 2 and flange 2 3. An elastic plug 18 is fixed in a notch on the side of the bolt hole 17 on the surface of flange 2 3 away from the pipeline 1. The elastic plug 18 is an arc-shaped piece. There are multiple elastic plugs 18, and the multiple elastic plugs 18 are distributed in a circle with the bolt hole 17 as the central axis. After the two pipelines 1 are spliced ​​end to end, the elastic plug 18 on the surface of flange 2 3 at the end of one pipeline 1 is inserted into the bolt hole 17 set on the surface of flange 1 2 at the end of the other pipeline 1.

[0038] When in use, after the two pipes 1 are spliced ​​end to end, the elastic plug 18 is inserted into the bolt hole 17. When the screw rod of the bolt passes through the bolt hole 17 on the surface of flange 1 2 and flange 2 3, the elastic plug 18 is expanded and deformed. The deformed elastic plug 18 is clamped between the screw rod and the bolt hole 17 to prevent the screw rod from loosening from the bolt hole 17. Then the bolts are tightened and flange 1 2 and flange 2 3 are fixed.

[0039] The use process of chemical pipe fittings with internal support structure is as follows:

[0040] 1. Preparation

[0041] Prepare pipes and flanges: Get the required length of pipe 1. Prepare flange 1 2 and flange 2 3, making sure they match the size of pipe 1. Install rubber seals: Install rubber seals 5 in the buckle grooves 4 of flange 1 2 and flange 2 3, making sure the rubber seals 5 are clamped between the buckle grooves 4 and pipe 1 to produce elastic deformation to improve sealing.

[0042] 2. Assemble the support frame

[0043] Install the reinforcing crossbars and inner support rings: fix multiple reinforcing crossbars 6 on the surface of flange 1 2. Fix multiple inner support rings 7 between the reinforcing crossbars 6 to form a supporting skeleton. Make sure that the rod length of the reinforcing crossbar 6 is less than the tube length of the pipeline 1, and that multiple inner support rings 7 are arranged at equal distances and sizes along the long side of the reinforcing crossbar 6. Install the screws and nuts: fix the screws 10 at the end of the reinforcing crossbar 6 away from the flange 1 2. Pass the screw 10 through the through-hole 9 in the reserved groove 8 of the flange 2 3. Sleeve and thread the nut 11 on the rod body of the screw 10, making sure that the nut 11 is locked on the screw 10 and is on the inner side of the reserved groove 8. Install the rubber retaining ring: sleeve and fix the rubber retaining ring 12 on the inner ring surface of the reserved groove 8, making sure that the outer ring surface of the rubber retaining ring 12 is against the outer ring surface of the reserved groove 8.

[0044] 3. Install pipes and flanges

[0045] Insert the pipe into the flange: insert the two ends of the pipe 1 into the buckle grooves 4 on the surface of the flange 1 2 and the flange 2 3 respectively, and ensure that the pipe 1 is tightly clamped by the flange 1 2 and the flange 2 3. Fix the flange: Use bolts to fix the flange 1 2 and the flange 2 3 together through the bolt holes 17 on the surface of the flange 1 2 and the flange 2 3.

[0046] 4. Pipeline splicing

[0047] Prepare to splice pipes: Get another pipe 1 and install flange 1 2 and flange 2 3 at both ends. Splice pipes: Insert the assembly ring 13 on flange 2 3 at the end of one pipe 1 into the assembly groove 14 provided on the surface of flange 2 at the end of another pipe 1. Make sure that the rubber ring 16 on the assembly ring 13 is inserted into the corresponding slot 15 in the assembly groove 14 to improve the sealing. Fix the splicing: Use bolts to fix flange 1 2 and flange 2 3 at the ends of the two pipes 1 together. Insert the elastic plug 18 on the surface of flange 2 3 at the end of one pipe 1 into the bolt hole 17 provided on the surface of flange 2 at the end of the other pipe 1 to improve the stability of the bolt fixation.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical pipe fitting with an internal support structure, comprising a pipe (1), characterized in that: Both ends of the pipeline (1) are respectively provided with a first flange (2) and a second flange (3). A plurality of reinforcing cross bars (6) are fixed on the surface of the first flange (2). A plurality of inner support rings (7) are fixed between the plurality of reinforcing cross bars (6). One end of the reinforcing cross bar (6) away from the first flange (2) is fixed with a screw rod (10). After the screw rod (10) penetrates through the second flange (3), a nut (11) is sleeved and screwed on the rod body of the screw rod (10). Bolt holes (17) are formed on the surfaces of both the first flange (2) and the second flange (3).

2. A chemical pipe fitting with an internal support structure according to claim 1, characterized in that: Buckling grooves (4) are formed on the surfaces of both the first flange (2) and the second flange (3). The buckling grooves (4) are circular grooves. Both ends of the first flange (2) are respectively inserted into the buckling grooves (4) on the surfaces of the first flange (2) and the second flange (3). A rubber sealing sleeve (5) is fixed inside the buckling groove (4). The rubber sealing sleeve (5) is a circular ring plate with a "C"-shaped cross section. The rubber sealing sleeve (5) is clamped between the buckling groove (4) and the pipeline (1) to generate elastic deformation.

3. The chemical pipe fitting with an internal support structure according to claim 1, characterized in that: The rod length of the reinforcing cross bar (6) is less than the pipe length of the pipeline (1). The plurality of inner support rings (7) are arranged and distributed at equal distances and of equal size along the long side of the reinforcing cross bar (6). The reinforcing cross bar (6) leans against the inner ring surface of the pipeline (1).

4. The chemical pipe fitting with an internal support structure according to claim 1, characterized in that: A reserved groove (8) is formed on the side of the second flange (3) away from the pipeline (1). The reserved groove (8) is a circular groove. Through holes (9) are formed on the surface of the reserved groove (8). There are a plurality of through holes (9), and the through holes (9) correspond to the screw rods (10) one by one. The screw rods (10) penetrate through the through holes (9). After the nut (11) is locked on the screw rod (10), the nut (11) is located inside the reserved groove (8).

5. A chemical pipe fitting with an internal support structure according to claim 4, characterized in that: A rubber retaining ring (12) is sleeved and fixed on the inner ring surface of the reserved groove (8). The outer ring surface of the rubber retaining ring (12) abuts against the outer ring surface of the reserved groove (8).

6. The chemical pipe fitting with an internal support structure according to claim 1, characterized in that: An assembling ring (13) is fixed on the side of the second flange (3) away from the pipeline (1). An assembling groove (14) is formed on the side of the first flange (2) away from the pipeline (1). The assembling groove (14) is an annular groove. The assembling groove (14) matches the assembling ring (13). There are two pipelines (1). After the first flanges (2) and the second flanges (3) are installed at the head and tail ends of the two pipelines (1), when the two pipelines (1) are spliced end to end, the assembling ring (13) on the second flange (3) at the end of one pipeline (1) is inserted into the assembling groove (14) arranged on the surface of the first flange (2) at the end of the other pipeline (1).

7. A chemical pipe fitting with an internal support structure according to claim 6, characterized in that: Card slots (15) are formed on both the inner ring surface and the outer ring surface of the assembling groove (14). The card slots (15) are circular grooves. Rubber rings (16) are fixed on both the inner ring surface and the outer ring surface of the assembling ring (13). After the assembling ring (13) is inserted into the corresponding assembling groove (14), the rubber rings (16) are inserted into the corresponding card slots (15).

8. The chemical pipe fitting with an internal support structure according to claim 6, characterized in that: An elastic plug (18) is fixed in a notch on a side of the bolt hole (17) on the surface of the second flange (3) away from the pipeline (1). The elastic plug (18) is an arc-shaped piece. A plurality of elastic plugs (18) are provided. The plurality of elastic plugs (18) are distributed in a circle with the bolt hole (17) as the central axis. After the two pipelines (1) are spliced ​​end to end, the elastic plug (18) on the surface of the second flange (3) at the end of one pipeline (1) is inserted into the bolt hole (17) provided on the surface of the first flange (2) at the end of the other pipeline (1).

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