High-temperature-resistant and high-pressure-resistant seamless steel tube special for

Abstract

The utility model provides a high temperature and high pressure resistant seamless steel pipe special for petrifaction, which comprises an inner pipe, reinforcing rings, liquid guide pipes, an outer pipe and a stabilizing frame, a plurality of reinforcing rings are fixed on the outer side surface of the inner pipe, the liquid guide pipes are fixed on the outer side surfaces of the reinforcing rings at two ends of the inner pipe, and the other ends of the liquid guide pipes are connected with an external pipeline; an outer pipe is fixed to the outer side face of the reinforcing ring through thread engagement, and a plurality of stabilizing frames are fixed to the outer side face of the outer pipe. And two ends of the inner pipe are respectively connected with corresponding petrochemical equipment. Due to the arrangement of the reinforcing ring and the stabilizing frame, during use, the high-temperature-resistant effect and the high-pressure-resistant effect can be achieved, and the impact direction can be changed during external impact, so that the impact direction is prevented from directly facing the seamless steel pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of seamless steel pipes, and in particular relates to a special high-temperature and high-pressure resistant seamless steel pipe for petrochemical industry. Background Art

[0002] As a steel material with a hollow cross-section and a length much greater than its diameter or circumference, seamless steel pipe plays a vital role in the petrochemical industry, especially in the transportation of fluids.

[0003] However, with the continuous development of the petrochemical industry, the performance requirements for seamless steel pipes are getting higher and higher. Existing petrochemical-specific seamless steel pipes often face huge challenges when operating in high temperature and high pressure environments. On the one hand, their high temperature resistance is poor, and long-term operation in high temperature environments can easily lead to a decrease in material performance and even cause safety accidents; on the other hand, their high pressure resistance is also limited and cannot meet the needs of high-pressure fluid transportation.

[0004] In addition, the existing petrochemical-specific seamless steel pipes often ignore the setting of protective structures during design and manufacturing. In actual applications, seamless steel pipes may be hit by external devices, but due to the lack of effective protective structures, the impact force often acts directly on the seamless steel pipes, causing the seamless steel pipes to break or deform, seriously affecting their service life and safety.

[0005] Therefore, it is very necessary to invent a special high temperature and high pressure resistant seamless steel pipe for petrochemical industry. Utility Model Content

[0006] The utility model aims to provide a high temperature and high pressure resistant seamless steel pipe for petrochemical industry to solve the problems mentioned in the background technology.

[0007] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0008] The utility model is a petrochemical special high-temperature and high-pressure resistant seamless steel pipe, comprising an inner pipe, a reinforcement ring, a liquid guide tube, an outer pipe and a stabilizing frame, wherein a plurality of the reinforcement rings are fixed to the outer side surface of the inner pipe by welding, wherein the liquid guide tubes are fixed to the outer side surfaces of the reinforcement rings at both ends of the inner pipe, and the other end of the liquid guide tube is connected to an external pipeline through a joint; the outer side surface of the reinforcement ring is fixed to the outer pipe by threaded engagement, wherein the outer side surface of the outer pipe is fixed to a plurality of the stabilizing frames; and the two ends of the inner pipe are respectively connected to corresponding petrochemical equipment through joints.

[0009] Furthermore, the reinforcement ring includes a ring body and a transfer tube, the ring body is fixed to the outer side of the inner tube by welding, and the outer side of the ring body is fixed to the inner wall of the outer tube by threaded engagement; a plurality of transfer tubes are fixed inside the ring body, wherein the transfer tubes are respectively connected to both sides of the ring body; the corresponding transfer tubes are fixed to the corresponding liquid guide tubes through joints. Such an arrangement can not only achieve the effect of high temperature resistance, but also achieve the effect of high pressure resistance.

[0010] Furthermore, an inward annular groove is formed on the outer side of the ring body, wherein a sealing ring is fixed inside the annular groove, and the outer side of the sealing ring is fitted against the inner wall of the outer tube. Such a configuration effectively prevents leakage of the coolant at the connection between the reinforcement ring and the outer tube.

[0011] Furthermore, the stabilizing frame includes a sleeve, balls and a support frame, the sleeve is fixed to the outer side surface of the outer tube by welding, and the outer side surface of the sleeve is evenly installed with a plurality of the balls through a ball joint for rotation; the outer side surface of the sleeve is fixed with a support frame by bolts, wherein the end of the support frame away from the sleeve is a plane. Such an arrangement can change the impact direction during an external impact, thereby avoiding the impact direction facing the seamless steel pipe. Secondly, when the seamless steel pipe is placed on the ground for use, it can avoid the seamless steel pipe from rolling on the ground.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The reinforcement ring of the utility model is set up, when in use, the ring body can fix the inner tube and the outer tube together, and the transfer tube in the reinforcement ring is connected to the liquid guide tube to form a coolant circulation channel, which enables the coolant in the external pipeline to be smoothly transported to between the inner tube and the outer tube, and cools the high-temperature materials transported inside the inner tube. This design effectively improves the high-temperature resistance of the seamless steel pipe and extends its service life; secondly, when the internal pressure of the inner tube is large, the coolant can act as a buffer layer to disperse and relieve the pressure of the inner tube, thereby avoiding deformation or rupture of the inner tube due to excessive pressure.

[0014] 2. With the setting of the stabilizing frame of the utility model, when a foreign object hits the seamless steel pipe, the ball can first contact the foreign object and rotate, causing the impact direction to shift, thereby avoiding damage to the seamless steel pipe caused by direct impact; secondly, when the seamless steel pipe needs to be placed on the ground, the support frame can be fixed to the sleeve by bolts to prevent the seamless steel pipe from rolling or sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic structural diagram of the utility model in cross section.

[0018] Figure 3 It is a structural schematic diagram of the reinforcement ring of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the utility model stabilizing frame.

[0020] In the figure:

[0021] 1-inner tube, 2-reinforcement ring, 21-ring body, 22-transfer tube, 3-liquid guide tube, 4-outer tube, 5-stabilizing frame, 51-sleeve, 52-ball, 53-support frame. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", "all around" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.

[0024] See also Figure 1 and Figure 2As shown, the utility model is a petrochemical special high temperature and high pressure resistant seamless steel pipe, comprising an inner pipe 1, a reinforcement ring 2, a liquid guide tube 3, an outer pipe 4 and a stabilizing frame 5, the outer side surface of the inner pipe 1 is fixed with a plurality of reinforcement rings 2 by welding, wherein the outer side surfaces of the reinforcement rings 2 at both ends of the inner pipe 1 are fixed with liquid guide tubes 3, and the other end of the liquid guide tube 3 is connected to an external pipeline through a joint; the outer side surface of the reinforcement ring 2 is fixed with the outer pipe 4 by threaded engagement, wherein the outer side surface of the outer pipe 4 is fixed with a plurality of stabilizing frames 5; the two ends of the inner pipe 1 are respectively connected to corresponding petrochemical equipment through joints.

[0025] like Figure 3 As shown, the reinforcement ring 2 includes a ring body 21 and a transfer tube 22. The ring body 21 is fixed to the outer side of the inner tube 1 by welding, and the outer side of the ring body 21 is fixed to the inner wall of the outer tube 4 by threaded engagement; a plurality of transfer tubes 22 are fixed inside the ring body 21, wherein the transfer tubes 22 are respectively communicated with the two sides of the ring body 21; the corresponding transfer tubes 22 are fixed to the corresponding liquid guide tubes 3 through joints. When in use, the ring body 21 can fix the inner tube 1 and the outer tube 4 together, and connect the transfer tubes 22 in the reinforcement ring 2 at both ends of the inner tube 1 with the corresponding liquid guide tubes 3, so as to transport the coolant in the external pipeline between the inner tube 1 and the outer tube 4, and cool the material transported inside the inner tube by the coolant, and when the pressure inside the inner tube 1 is large, the coolant can disperse the pressure to avoid deformation of the inner tube 1.

[0026] Specifically, an inward annular groove is provided on the outer side surface of the ring body 21, wherein a sealing ring is fixed inside the annular groove, and the outer side surface of the sealing ring is fitted against the inner wall of the outer tube 4. When in use, the sealing ring fixed on the outer side surface of the ring body 21 can form a tight sealing layer between the ring body 21 and the inner wall of the outer tube 4, thereby effectively preventing leakage of the coolant at the connection between the reinforcement ring 2 and the outer tube 4.

[0027] like Figure 4 As shown, the stabilizing frame 5 includes a sleeve 51, a ball 52 and a support frame 53. The sleeve 51 is fixed to the outer side surface of the outer tube 4 by welding, and a plurality of ball 52 are evenly installed on the outer side surface of the sleeve 51 through a ball joint for rotation; a support frame 53 is fixed to the outer side surface of the sleeve 51 by bolts, wherein the end of the support frame 53 away from the sleeve 51 is a plane. When in use, if a foreign object hits the device, the foreign object will first contact the corresponding ball 52. At this time, since the ball 52 can rotate, the direction of the foreign object's impact will be offset to avoid the impact direction facing the seamless steel pipe. At the same time, when the seamless steel pipe needs to be placed on the ground, the support frame 53 can be fixed to the corresponding sleeve 51 by bolts, and the support frame 53 can be used to prevent the seamless steel pipe from rolling on the ground. If it is an overhead setting, the support frame 53 can be removed from the sleeve 51.

[0028] See also Figure 1-4 As shown, the utility model is a petrochemical-specific high-temperature and high-pressure resistant seamless steel pipe, and its working principle is: when in use, firstly, the inner pipe 1 and the outer pipe 4 are assembled together through the reinforcement ring 2, and then the two ends of the inner pipe 1 are respectively connected to the corresponding petrochemical equipment through joints, and the reinforcement rings 2 at the two ends of the inner pipe 1 are connected to the external pipeline through the liquid guide tube 3.

[0029] During use, the inner tube 1 can transport materials, and the coolant inside the external pipeline will enter between the inner tube 1 and the outer tube 4 under the action of one of the liquid guide tubes 3, and then be discharged from the other liquid guide tube 3. Among them, the coolant between the inner tube 1 and the outer tube 4 can not only cool down the inner tube 1, but also disperse the pressure inside the inner tube 1.

[0030] Secondly, during use, the stabilizing frame 5 can change the impact direction of external impact to avoid the impact direction facing the seamless steel pipe.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high temperature and high pressure resistant seamless steel pipe for petrochemical industry, comprising an inner pipe (1), a reinforcement ring (2), a liquid guide pipe (3), an outer pipe (4) and a stabilizing frame (5), characterized in that: A plurality of the reinforcement rings (2) are fixed to the outer side surface of the inner tube (1), wherein a liquid guide tube (3) is fixed to the outer side surfaces of the reinforcement rings (2) at both ends of the inner tube (1), and the other end of the liquid guide tube (3) is connected to an external pipeline; an outer tube (4) is fixed to the outer side surface of the reinforcement ring (2) by threaded engagement, wherein a plurality of the stabilizing frames (5) are fixed to the outer side surface of the outer tube (4); and the two ends of the inner tube (1) are respectively connected to corresponding petrochemical equipment.

2. A petrochemical special high temperature and high pressure resistant seamless steel pipe as claimed in claim 1, characterized in that: The reinforcement ring (2) comprises a ring body (21) and a transfer tube (22); the ring body (21) is fixed to the outer side surface of the inner tube (1), and the outer side surface of the ring body (21) is fixed to the inner wall of the outer tube (4) by threaded engagement; a plurality of transfer tubes (22) are fixed inside the ring body (21), wherein the transfer tubes (22) are respectively connected to two sides of the ring body (21); and the transfer tubes (22) are fixed to corresponding liquid guide tubes (3).

3. A petrochemical special high temperature and high pressure resistant seamless steel pipe as claimed in claim 2, characterized in that: The outer side surface of the ring body (21) is provided with an inwardly facing annular groove, wherein a sealing ring is fixed inside the annular groove, and the outer side surface of the sealing ring is arranged in close contact with the inner wall of the outer tube (4).

4. A petrochemical special high temperature and high pressure resistant seamless steel pipe as claimed in claim 1, characterized in that: The stabilizing frame (5) comprises a sleeve (51), balls (52) and a support frame (53); the sleeve (51) is fixed to the outer side surface of the outer tube (4) by welding, and a plurality of balls (52) are evenly rotatably mounted on the outer side surface of the sleeve (51); the support frame (53) is fixed to the outer side surface of the sleeve (51), wherein one end of the support frame (53) away from the sleeve (51) is a plane.

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