Wear-resistant stainless steel seamless tube

Abstract

The utility model relates to the technical field of seamless pipes, and discloses a wear-resistant stainless steel seamless pipe which comprises two steel pipes, flange plates are installed on the sides, close to each other, of the two steel pipes, inner sleeves are installed on the inner walls of the flange plates, corrugated pipes are fixedly connected to the outer portions of the inner sleeves, and the outer portions of the corrugated pipes are fixedly connected with steel pipes. The outer portions of the two flange plates are in threaded connection with a plurality of bolts, the outer portions of the bolts are in threaded connection with four nuts, extending blocks are fixedly connected to the two ends of one side of the steel pipe, clamping assemblies are arranged on the inner walls of the extending blocks, and a wear-resisting assembly is arranged in the steel pipe. The flange plate and the steel pipe can be reliably connected, the clamping block is clamped with the inner wall of the flange plate to provide a stable fixing effect, and the elastic effect of the spring ensures firm connection and certain elasticity, so that fluctuation can be absorbed, vibration can be reduced, and damage caused by frequent mechanical stress can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a seamless pipe technical field especially relates to a wear -resisting stainless steel seamless pipe. BACKGROUND

[0002] Stainless steel seamless pipe is a kind of raw material with stainless steel, is processed by cold-drawing or hot-rolling process pipe material. Its characteristics are no welding joint, with higher strength, corrosion resistance and high-temperature performance, is widely used in chemical industry, petroleum, natural gas, machinery, ship, food, pharmaceutical industry. According to different alloy components, stainless steel seamless pipe can be divided into austenitic, martensitic, ferrite and various types, suitable for different working environment.

[0003] The structure of stainless steel seamless pipe is a seamless tubular body, usually by cold-drawing, hot-rolling or extrusion process. Its main components are iron, chromium, nickel and other elements, ensure its excellent corrosion resistance and mechanical properties. On the principle of use, stainless steel seamless pipe relies on its high strength, high temperature resistance, corrosion resistance, in the environment of pressure, temperature change and chemical medium corrosion shows good stability.

[0004] The traditional stainless steel seamless pipe is easy to be affected by mechanical vibration and temperature change during use, leading to loose or damaged connection, and further affecting the safety and service life of the overall component, not only shortens the service life of the steel pipe, but also reduces the stability, therefore a wear -resisting stainless steel seamless pipe is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a wear -resisting stainless steel seamless pipe, aims at improving the problems of being affected by mechanical vibration and temperature change in prior art, leading to loose or damaged connection, and further affecting the safety and service life of the overall component.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A kind of wear -resisting stainless steel seamless pipe, including two steel pipes, the similar side of two described steel pipes is equipped with flange plate, the inner wall of described flange plate is equipped with inner sleeve, the outer portion of described inner sleeve is fixedly connected with bellow, the outer portion of two described flange plates is screw-connected with multiple bolts, the outer portion of described bolt is screw-connected with four nuts, the side of the steel pipe both ends is fixedly connected with extension block, the inner wall of described extension block is provided with engagement assembly, the inside of described steel pipe is provided with wear -resisting component;

[0008] As a further description of the above technical scheme:

[0009] The two nuts are in contact with the outside of the flange plate, and the outside of the extension block is slidingly connected to one side of the flange plate.

[0010] As a further description of the above technical solution:

[0011] The clamping assembly comprises a spring, one end of the spring is fixedly connected to one side of the extension block, and the other end of the spring is fixedly connected with a clamping block.

[0012] As a further description of the above technical solution:

[0013] The outside of the clamping block is clamped with the inner wall of the flange plate, and the outside of the clamping block is slidingly connected to one side of the extension block.

[0014] As a further description of the above technical solution:

[0015] The wear-resistant assembly comprises a functional layer, the outside of the functional layer is arranged on one side of the steel pipe, the inner side of the functional layer is provided with a transition layer, and the inner side of the transition layer is provided with a bonding layer.

[0016] As a further description of the above technical solution:

[0017] The bonding layer is a nano yttrium oxide reinforced nickel-chromium-aluminum-yttrium alloy, and the transition layer is a nano diamond reinforced tungsten carbide-cobalt-chromium alloy.

[0018] As a further description of the above technical solution:

[0019] The functional layer is a graphene quantum dot modified alumina-yttrium stabilized zirconia ceramic.

[0020] As a further description of the above technical solution:

[0021] Both sides of the clamping block are provided with a rounded corner, and the outside of the clamping block is slidingly connected to the inner wall of the flange plate.

[0022] The utility model has the advantages of the following beneficial effects:

[0023] 1、The utility model discloses a reliable connection of flange plate and steel pipe is realized, and the stable fixing effect is provided to the clamping of the clamping block and the inner wall of the flange plate, and the elastic action of the spring ensures firm connection and has certain elasticity, thereby can absorb fluctuation and reduce vibration, avoid the damage caused by frequent mechanical stress, simultaneously, the installation of the bellows effectively reduces vibration and noise, improves the operation stability of the component, reduces noise pollution, prolongs the service life of the steel pipe, enhances the stability and durability of the overall structure.

[0024] 2、The utility model discloses a wear -resisting stainless steel seamless pipe, which comprises a steel pipe, a flange plate, an inner sleeve, a corrugated pipe, a bolt, a nut, an extension block, a spring, a clamping block, a functional layer, a transition layer and a combination layer. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A three-dimensional schematic view of the wear -resisting stainless steel seamless pipe is provided for the utility model;

[0026] Figure 2 The structure schematic view of the inner sleeve of the wear -resisting stainless steel seamless pipe is provided for the utility model;

[0027] Figure 3 The structure schematic view of the spring of the wear -resisting stainless steel seamless pipe is provided for the utility model;

[0028] Figure 4 The structure schematic view of the transition layer of the wear -resisting stainless steel seamless pipe is provided for the utility model.

[0029] Legend:

[0030] 1, steel pipe, 2, flange plate, 3, inner sleeve, 4, corrugated pipe, 5, bolt, 6, nut, 7, extension block, 8, spring, 9, clamping block, 10, functional layer, 11, transition layer, 12, combination layer. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] Reference Figure 1 and Figure 2The utility model provides an embodiment: a kind of wear-resistant stainless steel seamless pipe, two steel pipes 1, the similar side of two steel pipes 1 is equipped with flange plate 2, flange plate 2 is tightly matched with the end of steel pipe 1 by precision machining, annular contact surface evenly dispersed installation stress, prevent sealing failure, ensure the stability of pipeline connection, the inner wall of flange plate 2 is equipped with inner sleeve 3, the taper structure of inner sleeve 3 guides corrugated pipe 4 axial movement, avoid lateral deviation, guarantee the centring accuracy when pipeline thermal expansion and contraction, the outer fixed connection of inner sleeve 3 has corrugated pipe 4, the elastic wave structure of corrugated pipe 4 absorbs pipeline telescopic displacement, multilayer design synchronous attenuation vibration energy, reduce noise transmission.

[0033] The outer thread connection of two flange plates 2 has multiple bolts 5 bolt 5 symmetric arrangement forms closed loop stress structure, by pre-tightening force compaction flange plate 2, maintain connection surface closely adhere, the outer thread connection of bolt 5 has four nuts 6, nut 6 uses double-layer locking design, inhibits threaded pair vibration micro-displacement, prevent bolt 5 loosening and lead to connection failure, the side of steel pipe 1 both ends is fixedly connected with extension block 7, the guide boss of extension block 7 is matched with flange plate 2 clamping groove, automatic correction axial deviation when installing, realize quick positioning alignment.

[0034] Reference Figure 3 And Figure 4 When flange plate 2 is in place, trigger the spring 8 pre-compression design is provided with constant elastic force for clamping block 9, and the clamping block 9 is popped out to form a mechanical lock. The other end of the spring 8 is fixedly connected with the clamping block 9. The wedge-shaped head of the clamping block 9 is automatically retracted when inserted. After being in place, it is pushed back to reset by the spring 8 to form an anti-falling bidirectional interlocking structure. The inside of the steel pipe 1 is provided with a wear-resistant assembly. The wear-resistant assembly includes a functional layer 10. The ceramic material of the functional layer 10 has high hardness and self-lubricating property, which resists particle erosion and wear, reduces fluid friction loss, and the inside of the functional layer 10 is provided with a transition layer 11. The gradient structure of the transition layer 11 relieves the thermal expansion difference between the ceramic and the metal matrix, prevents interface stress concentration and delamination, and the inside of the transition layer 11 is provided with a bonding layer 12. The bonding layer 12 forms a metallurgical bond with the matrix through active elements to ensure the adhesion strength and durability of the wear-resistant layer under high temperature cycling.

[0035] Working principle: when it is needed to use, by installing the flange plate 2 on the outside of the steel pipe 1, at this time the extension block 7 is inserted into the inner wall of the flange plate 2, when the extension block 7 enters, the clamping block 9 is in contact with one side of the flange plate 2, so that the clamping block 9 is pushed, at this time the clamping block 9 pushes the spring 8 to make the spring 8 deform, and the clamping block 9 is retracted into the inside of the extension block 7, at this time through the flange plate 2, the spring 8 releases the elastic potential energy to push the clamping block 9, so that the clamping block 9 is clamped with the inner wall of the flange plate 2, thereby realizing the installation of the flange plate 2, at this time the bolt 5 is installed to the through hole of the two flange plates 2, the nut 6 is installed on the outside of the bolt 5, the nut 6 is attached to one side of the flange plate 2, thereby being able to realize the limitation of the flange plate 2, through the corrugated pipe 4 installed after the corrugated pipe 4 can absorb displacement, vibration reduction and noise reduction, thereby improving the performance and improving the service life of the steel pipe 1.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the person skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. A wear resistant stainless steel seamless pipe comprising two steel pipes (1), characterized in that: Two said steel pipes (1) near one side are equipped with flange plate (2), the inner wall of said flange plate (2) is equipped with inner sleeve (3), the outside of said inner sleeve (3) is fixedly connected with corrugated pipe (4), the outside of two said flange plate (2) is screw-connected with a plurality of bolts (5), the outside of said bolt (5) is screw-connected with four nuts (6), one side of said steel pipe (1) both ends is fixedly connected with extension block (7), the inner wall of said extension block (7) is provided with clamping assembly, the inside of said steel pipe (1) is provided with wear-resistant assembly.

2. A wear resistant stainless steel seamless pipe according to claim 1, characterized in that: Two said nuts (6) near one side are in contact with the outside of said flange plate (2), the outside of said extension block (7) is slidingly connected on one side of said flange plate (2).

3. A wear resistant stainless steel seamless pipe according to claim 1, characterized in that: Said clamping assembly includes spring (8), one end of said spring (8) is fixedly connected on one side of said extension block (7), the other end of said spring (8) is fixedly connected with clamping block (9).

4. A wear resistant stainless steel seamless pipe according to claim 3, characterized in that: The outside of said clamping block (9) is clamped with the inner wall of said flange plate (2), the outside of said clamping block (9) is slidingly connected on one side of said extension block (7).

5. A wear resistant stainless steel seamless pipe according to claim 1, characterized by: Said wear-resistant assembly includes functional layer (10), the outside of said functional layer (10) is arranged on one side of said steel pipe (1), the inner side of said functional layer (10) is provided with transition layer (11), the inner side of said transition layer (11) is provided with combination layer (12).

6. A wear resistant stainless steel seamless tube according to claim 5, characterized in that: Said combination layer (12) is nano yttrium oxide reinforced nickel-chromium-aluminum-yttrium alloy, said transition layer (11) is nano diamond reinforced tungsten carbide cobalt chromium alloy.

7. A wear resistant stainless steel seamless pipe according to claim 5, characterized by: Said functional layer (10) is graphene quantum dot modified alumina-yttrium stabilized zirconia ceramic.

8. A wear resistant stainless steel seamless pipe according to claim 3, characterized by: Both sides of said clamping block (9) are provided with round corners, the outside of said clamping block (9) is slidingly connected in the inner wall of said flange plate (2).

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