High-strength plugboard flange

Abstract

The utility model provides a high-strength flashboard flange. The high-strength flashboard flange comprises a first welded pipe and a second welded pipe which are respectively arranged in a first through hole and a second through hole of a first flange body and a second flange body. The first flange body and the second flange body are detachably connected, the inserting plate assembly is clamped between the first flange body and the second flange body, and the first welding pipe and the second welding pipe are communicated through the inserting plate assembly. When the pipeline of the hydraulic system is communicated with high-pressure liquid, the inserting plate assembly can enable the joint of the first welding pipe and the second welding pipe to be kept sealed. After long-time use, if the plugboard assembly is damaged, the first flange body and the second flange body can be directly disassembled, and after the plugboard assembly is replaced, connection is conducted again. Based on the structural design, maintenance operation is greatly facilitated, and the equipment maintenance cost can be remarkably reduced.

Description

Technical Field

[0001] This utility model generally relates to the field of pipeline connection flange technology, and specifically to a high-strength insert flange. Background Technology

[0002] In current fluid control systems and fluid transport pipelines for large-scale metal forming and other equipment, as the tonnage of the equipment increases, the installed power of the overall equipment also increases. However, the flow rate of the fluid control system has a design limit; excessively high flow rates will cause the cost of the entire fluid control system to increase exponentially. Therefore, it is necessary to simultaneously increase the design pressure of the system on the basis of a larger flow rate. This means that the fluid control system for such equipment must meet the design selection requirements of both high pressure and large flow rate.

[0003] For example, the hydraulic systems in some large-tonnage metal or composite material molding equipment are designed to pressures of 40 MPa and above, and flow rates generally reach or even exceed 10,000 L / min. Therefore, it is necessary to use high-pressure, large-diameter pipe flanges for connection. Traditional hydraulic flanges use O-rings or copper gaskets for sealing, which often leads to seal damage and flange leakage.

[0004] For large-diameter, high-pressure fluid pipelines, especially for connecting flanges used in pipelines with a diameter of DN80 or larger, the sealing capability of the sealing ring is particularly important. Because these flanges are typically large and heavy, repairs are extremely difficult once a leak occurs.

[0005] Traditional flanges typically use O-rings or annealed copper gaskets as sealing elements, installed in a sealing groove. O-rings are generally made of rubber, which can easily be squeezed into the sealing gap under high pressure, causing damage and leakage. Once a leak occurs, the entire flange needs to be disassembled to replace the O-ring. Annealed copper gaskets are disposable sealing elements; the compression deformation during installation cannot be recovered after disassembly. Therefore, the copper gasket also needs to be replaced after each disassembly. Furthermore, copper gaskets are prone to bimetallic corrosion with the flange body steel. For hydraulic systems using water-based hydraulic media such as ethylene glycol or fire-resistant hydraulic oils, this will exacerbate flange corrosion, making them unsuitable. Utility Model Content

[0006] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a high-strength insert flange.

[0007] This utility model provides a high-strength insert flange, comprising:

[0008] A first flange body and a second flange body are detachably connected; the first flange body has a first through hole; the second flange body has a second through hole;

[0009] A first welded pipe and a second welded pipe are fixedly connected in the pipeline of the hydraulic system; the first welded pipe is disposed in the first through hole and the second welded pipe is disposed in the second through hole.

[0010] A gate plate assembly is disposed between the first flange body and the second flange body for connecting the first welded pipe and the second welded pipe.

[0011] According to the technical solution provided by this utility model, a plurality of third through holes are uniformly opened on the first flange body; a plurality of threaded holes are uniformly opened on the second flange body;

[0012] The plurality of third through holes are respectively arranged opposite to the plurality of threaded holes;

[0013] It also includes multiple connecting bolts and multiple connecting nuts;

[0014] The connecting bolt passes through the third through hole and connects to the threaded hole; the connecting nut is connected to the connecting bolt and is located on the side of the first flange body away from the second flange body.

[0015] According to the technical solution provided by this utility model, it also includes a plurality of flat washers; the flat washers are sleeved on the connecting bolts and located between the connecting nut and the first flange body, for abutting against the connecting nut and the first flange body.

[0016] According to the technical solution provided by this utility model, the first welded pipe has a first abutting protrusion at the end near the second flange body; the second welded pipe has a second abutting protrusion at the end near the first flange body.

[0017] The first abutting protrusion abuts against the surface of the first flange body near the second flange body, and is used to fix the relative position of the first welded pipe and the first flange body.

[0018] The second abutting protrusion abuts against the surface of the second flange body near the first flange body, and is used to fix the relative position of the second welded pipe and the second flange body.

[0019] According to the technical solution provided by this utility model, the surface of the first abutting protrusion near the side of the insert assembly and the surface of the second abutting protrusion near the side of the insert assembly are both planar structures.

[0020] According to the technical solution provided by this utility model, the insert assembly includes:

[0021] The insert plate body is disposed between the first abutting protrusion and the second abutting protrusion; the insert plate body is provided with a fourth through hole for connecting the first welded pipe and the second welded pipe;

[0022] Two sealing rings are respectively disposed on both sides of the insert plate body and located outside the fourth through hole, and are used to abut against the first abutting protrusion and the second abutting protrusion respectively.

[0023] According to the technical solution provided by this utility model, the insert plate body has sealing grooves on both the side near the first abutting protrusion and the side near the second abutting protrusion; the two sealing rings are respectively disposed in the two sealing grooves to fix the relative position of the sealing rings and the insert plate body.

[0024] According to the technical solution provided by this utility model, the surface of the sealing ring has striped patterns to improve sealing performance.

[0025] The beneficial effects of this utility model are as follows:

[0026] The first and second welded pipes are respectively installed in the first and second through holes of the first and second flange bodies. The first and second flange bodies are detachably connected, with a gate plate assembly sandwiched between them, connecting the first and second welded pipes. When high-pressure liquid is connected to the hydraulic system pipeline, the gate plate assembly maintains a seal at the connection between the first and second welded pipes. After prolonged use, if the gate plate assembly is damaged, the first and second flange bodies can be directly disassembled, the gate plate assembly replaced, and then reconnected. Based on the above structural design, maintenance operations are greatly facilitated, and equipment maintenance costs can be significantly reduced. Attached Figure Description

[0027] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 An exploded view of a high-strength insert flange;

[0029] Figure 2 This is the front view of the exploded view of a high-strength insert flange;

[0030] Figure 3 This is a cross-sectional view of a high-strength insert flange;

[0031] Figure 4 This is a schematic diagram of the sealing ring;

[0032] The components are: 1. First flange body; 2. Second flange body; 3. First through hole; 4. Second through hole; 5. First welded pipe; 6. Second welded pipe; 7. Insert plate assembly; 8. Third through hole; 9. Threaded hole; 10. Connecting bolt; 11. Connecting nut; 12. Flat gasket; 13. First abutment protrusion; 14. Second abutment protrusion; 15. Insert plate body; 16. Fourth through hole; 17. Sealing ring; 18. Sealing groove. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0034] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] Please refer to Figure 1-3 This utility model provides a high-strength insert flange, comprising:

[0036] A first flange body 1 and a second flange body 2 are detachably connected; the first flange body 1 has a first through hole 3; the second flange body 2 has a second through hole 4;

[0037] The first welded pipe 5 and the second welded pipe 6 are fixedly connected in the pipeline of the hydraulic system; the first welded pipe 5 is disposed in the first through hole 3 and the second welded pipe 6 is disposed in the second through hole 4.

[0038] Insert plate assembly 7 is disposed between the first flange body 1 and the second flange body 2, and is used to connect the first welded pipe 5 and the second welded pipe 6.

[0039] Specifically, the first welded pipe 5 and the second welded pipe 6 are respectively connected to the pipeline of the hydraulic system by welding. The high-strength slide flange of this utility model can be used in hydraulic systems with pressures up to 45MPa or 70MPa and flow rates up to 600m³ / h.

[0040] If the gate plate assembly is damaged after prolonged use, the first and second flange bodies can be directly disassembled, the gate plate assembly replaced, and then reconnected. This structural design greatly facilitates maintenance operations and significantly reduces equipment maintenance costs.

[0041] Furthermore, the first flange body 1 is provided with a plurality of third through holes 8 evenly distributed; the second flange body 2 is provided with a plurality of threaded holes 9 evenly distributed.

[0042] The plurality of third through holes 8 are respectively arranged opposite to the plurality of threaded holes 9;

[0043] It also includes multiple connecting bolts 10 and multiple connecting nuts 11;

[0044] The connecting bolt 10 passes through the third through hole 8 and is connected to the threaded hole 9; the connecting nut 11 is connected to the connecting bolt 10 and is located on the side of the first flange body 1 away from the second flange body 2.

[0045] Specifically, the process of connecting or disconnecting the first flange body 1 and the second flange body 2 is carried out by tightening or loosening the connecting nuts 11 in sequence using a torque wrench or a hydraulic tensioner.

[0046] Furthermore, it also includes a plurality of flat washers 12; the flat washers 12 are sleeved on the connecting bolts 10 and located between the connecting nut 11 and the first flange body 1, for abutting against the connecting nut 11 and the first flange body 1.

[0047] Specifically, adding a flat washer 12 can prevent the connecting nut 11 from wearing against the first flange body 1, and can also ensure that all parts move synchronously when connecting the first flange body 1 and the second flange body 2, reducing the probability of the two flange bodies tilting against each other.

[0048] Furthermore, the first welded pipe 5 has a first abutting protrusion 13 at the end near the second flange body 2; the second welded pipe 6 has a second abutting protrusion 14 at the end near the first flange body 1.

[0049] The first abutting protrusion 13 abuts against the surface of the first flange body 1 near the second flange body 2, and is used to fix the relative position of the first welded pipe 5 and the first flange body 1.

[0050] The second abutting protrusion 14 abuts against the surface of the second flange body 2 on the side near the first flange body 1, and is used to fix the relative position of the second welded pipe 6 and the second flange body 2.

[0051] The surfaces of the first abutting protrusion 13 near the insert assembly 7 and the second abutting protrusion 14 near the insert assembly 7 are both planar structures.

[0052] The planar structure with its abutment protrusions connects to the gate plate assembly, which reduces the chance of damage under high pressure and allows the two flanges to be quickly separated after damage occurs, facilitating the replacement of the gate plate assembly 7.

[0053] Furthermore, the insert assembly 7 includes:

[0054] Insert plate body 15, the insert plate body 15 is disposed between the first abutting protrusion 13 and the second abutting protrusion 14; the insert plate body 15 is provided with a fourth through hole 16 for connecting the first welded pipe 5 and the second welded pipe 6.

[0055] Two sealing rings 17 are respectively disposed on both sides of the insert plate body 15 and located outside the fourth through hole 16, and are respectively used to abut against the first abutting protrusion 13 and the second abutting protrusion 14.

[0056] Furthermore, the insert plate body 15 has sealing grooves 18 on both the side near the first abutting protrusion 13 and the side near the second abutting protrusion 14; the two sealing rings 17 are respectively disposed in the two sealing grooves 18 to fix the relative position of the sealing rings 17 and the insert plate body 15.

[0057] Among them, reference Figure 4 The surface of the sealing ring 17 has a striped pattern to improve sealing performance.

[0058] Specifically, by placing the sealing ring 17 inside the sealing groove 18, the position of the sealing ring 17 can be fixed after the two flange bodies are connected to each other, so as to prevent the sealing ring 17 from shifting due to the internal high pressure and ultimately causing leakage.

[0059] In some embodiments, the first flange body 1, the second flange body 2, the first welded pipe 5, the second welded pipe 6 and the insert plate body 15 can be made of materials such as 45 steel, 16Mn, or austenitic stainless steel, depending on the design pressure and the type of medium used; the connecting bolts 10 used are grade 10.9 and the connecting nuts 11 are grade 10 strength.

[0060] The above designs are all intended to withstand high pressure without causing damage when applied in high-pressure liquid systems.

[0061] The process of replacing the insert assembly 7 includes:

[0062] Reverse rotation of connecting nut 11 and connecting bolt 10 separates connecting bolt 10 from second flange body 2; first abutting protrusion 13 and second abutting protrusion 14 separate from two sealing rings 17 respectively;

[0063] Remove the damaged insert body 15 and the two sealing rings 17;

[0064] The new insert body 15 and two sealing rings 17 are positioned between the first abutting protrusion 13 and the second abutting protrusion 14;

[0065] Rotate the connecting nut 11 and the connecting bolt 10 in the forward direction to connect the connecting bolt 10 to the second flange body 2, thereby completing the replacement.

[0066] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this utility model is not limited to the specific combination of the above-described technical features, but should also cover other technical solutions formed by any combination of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.

Claims

1. A high-strength insert flange, characterized in that, include: A first flange body (1) and a second flange body (2) are detachably connected; the first flange body (1) has a first through hole (3); the second flange body (2) has a second through hole (4). The first welded pipe (5) and the second welded pipe (6) are fixedly connected in the pipeline of the hydraulic system; the first welded pipe (5) is set in the first through hole (3) and the second welded pipe (6) is set in the second through hole (4); Insert plate assembly (7), which is disposed between the first flange body (1) and the second flange body (2) for connecting the first welded pipe (5) and the second welded pipe (6).

2. The high-strength insert flange according to claim 1, characterized in that, The first flange body (1) is provided with a plurality of third through holes (8); the second flange body (2) is provided with a plurality of threaded holes (9). The plurality of third through holes (8) are respectively arranged opposite to the plurality of threaded holes (9); It also includes multiple connecting bolts (10) and multiple connecting nuts (11); The connecting bolt (10) passes through the third through hole (8) and is connected to the threaded hole (9); the connecting nut (11) is connected to the connecting bolt (10) and is located on the side of the first flange body (1) away from the second flange body (2).

3. A high-strength insert flange according to claim 2, characterized in that, It also includes a plurality of flat washers (12); the flat washers (12) are fitted on the connecting bolts (10) and located between the connecting nut (11) and the first flange body (1), for abutting against the connecting nut (11) and the first flange body (1).

4. A high-strength insert flange according to claim 1, characterized in that, The first welded pipe (5) has a first abutting protrusion (13) at the end near the second flange body (2); the second welded pipe (6) has a second abutting protrusion (14) at the end near the first flange body (1). The first abutting protrusion (13) abuts against the surface of the first flange body (1) near the second flange body (2) to fix the relative position of the first welded pipe (5) and the first flange body (1); The second abutting protrusion (14) abuts against the surface of the second flange body (2) on the side near the first flange body (1) to fix the relative position of the second welded pipe (6) and the second flange body (2).

5. A high-strength insert flange according to claim 4, characterized in that, The surface of the first abutting protrusion (13) near the side of the insert assembly (7) and the surface of the second abutting protrusion (14) near the side of the insert assembly (7) are both planar structures.

6. A high-strength insert flange according to claim 4, characterized in that, The insert assembly (7) includes: Insert plate body (15), the insert plate body (15) is disposed between the first abutting protrusion (13) and the second abutting protrusion (14); the insert plate body (15) is provided with a fourth through hole (16) for connecting the first welded pipe (5) and the second welded pipe (6). Two sealing rings (17) are respectively disposed on both sides of the insert plate body (15) and located outside the fourth through hole (16), and are respectively used to abut against the first abutting protrusion (13) and the second abutting protrusion (14).

7. A high-strength insert flange according to claim 6, characterized in that, The insert body (15) has sealing grooves (18) on the side near the first abutting protrusion (13) and the side near the second abutting protrusion (14); two sealing rings (17) are respectively disposed in the two sealing grooves (18) to fix the relative position of the sealing rings (17) and the insert body (15).

8. A high-strength insert flange according to claim 6, characterized in that, The surface of the sealing ring (17) has a striped pattern to improve sealing performance.

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