Polypropylene graphite pipe with internal reinforced core body

Abstract

The utility model discloses a polypropylene graphite pipe with an internal reinforced core body, which belongs to the technical field of polypropylene graphite pipes, and comprises a polypropylene pipe, the outer side wall of the polypropylene pipe is detachably provided with a complete protective sleeve consisting of two half-cage protective sleeves; the polypropylene graphite pipe is characterized in that a semi-cage protective sleeve is arranged on the outer side wall of the polypropylene pipe, and the semi-cage protective sleeve comprises a plurality of semi-hoop rings which are linearly arranged at equal intervals and can be tightly attached to the outer side wall of the polypropylene pipe. A complete metal protection sleeve composed of two half-cage protection sleeves is detachably installed on the outer side of the polypropylene graphite pipe, when the metal protection sleeve is strongly impacted by a small-size object, the metal protection sleeve firstly impacts the vertical ribs to enable the vertical ribs to deform, good toughness is achieved, the graphite inner core pipe of the polypropylene graphite pipe is prevented from being penetrated or damaged by the small-size object, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the field of polypropylene graphite tubes, in particular to a polypropylene graphite tube with an internal reinforced core. Background Art

[0002] Graphite tube heat exchanger is one of the earliest graphite equipment used in the world. It has been widely used for its simple and compact structure, low flow resistance, high heat transfer efficiency, strong anti-crystallization ability, etc. However, the pressure and temperature resistance of graphite tube heat exchanger are poor, the allowable temperature is lower than 130℃, and the allowable pressure is less than 0.3MPa. And it cannot be used in strong impact and high vibration occasions. Especially when used for heating, the reliability is lower; At present, the commonly used block hole graphite heat exchangers, especially the coolers with liquid as the cooling medium, all have the following problems: 1. The heat exchange tubes made of graphite are easy to crack, and have low bending and tensile strength, so they can only be used for low pressure, and the graphite adhesion of the graphite heat exchange tubes is low, and they are easily washed away by the liquid in the heat exchange tubes. Long-term use will cause damage to the heat exchange tubes, such as breakage, etc.; 2. Whether it is a graphite baffle or a steel baffle, due to assembly requirements, there is always a certain gap between the graphite heat exchange block and the inner wall of the cylinder, which cannot effectively achieve the purpose of complete baffle of the cooling medium. During heat exchange, cross-flow phenomenon is inevitable, so the cooling effect is not ideal; 3. If the graphite tube is bonded to the baffle, since the heat exchanger cavity where the graphite tube is located needs to be flushed with cooling or cooling medium, the position where the graphite tube and the baffle are bonded is easy to crack under the long-term action of the medium, so that the graphite tube and the baffle are separated, thereby affecting the use of the graphite tube.

[0003] To solve the above problems, patent No. CN202121432984.2 discloses a polypropylene graphite tube with an internal reinforced core, which changes the traditional circular tubular graphite tube structure, adds a carbon fiber layer to the inner wall of the graphite tube, and at the same time, a T-shaped carbon fiber support core is evenly spaced on the outer wall of the graphite tube, thereby enhancing the strength of the graphite tube. While ensuring the heat exchange performance of the graphite tube, the service life of the graphite tube is extended; the sealing assembly provided in addition greatly improves the reliability of the seal, and at the same time, the direct connection method of the graphite tube and the baffle is changed to a connection method of the graphite tube and the baffle through a transition flange, thereby improving the pressure bearing capacity of the graphite tube.

[0004] The existing polypropylene graphite tube with an internal reinforced core has high hardness, strong toughness and is not easy to damage when the force-bearing area is large. When the force-bearing area is small, sharp objects can directly pierce into the carbon fiber material and directly destroy its structure. In addition, the carbon fiber material is not only expensive, but also impossible to repair perfectly. Once it is broken, it needs to be replaced with a new one. Utility Model Content

[0005] The utility model aims to provide a polypropylene graphite tube with an internally reinforced core. The polypropylene graphite tube with an internally reinforced core disclosed by the utility model has the advantage of high strength of the graphite tube, and is detachably mounted on the outside with a complete metal protective sleeve consisting of two half-cage protective sleeves. When a small-volume object hits it strongly, it first hits a plurality of vertical ribs to deform them, and has better toughness, protecting the graphite inner core tube of the polypropylene graphite tube from being penetrated and damaged by the small-volume object, and having a long service life, so as to solve the problems raised in the above-mentioned background technology.

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

[0007] A polypropylene graphite tube with an internally reinforced core comprises a polypropylene tube, the outer side wall of the polypropylene tube is detachably mounted with a complete protective sleeve consisting of two half-cage protective sleeves, the half-cage protective sleeve comprises a plurality of half-hoops which are arranged in a straight line and equidistantly and can fit tightly against the outer side wall of the polypropylene tube, the outer side walls of the plurality of half-hoops are all welded with a plurality of vertical ribs in a circumferentially equidistant array and are interconnected through the plurality of vertical ribs.

[0008] As a further solution of the utility model: a graphite inner core tube is fixedly installed on the inner side wall of the polypropylene tube.

[0009] As a further solution of the utility model: the vertical hoop mouth strips welded at both ends of the half-cage protective sleeve are provided with screw holes at both upper and lower ends, and the two half-cage protective sleeves are detachably connected to each other through the screw holes, bolts and nuts on the vertical hoop mouth strips.

[0010] As a further solution of the utility model: the half-cage protective cover is made of a high-toughness metal material.

[0011] As a further solution of the utility model: flanges are fixedly installed on the top and bottom of the polypropylene tube.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The polypropylene graphite tube with an internally reinforced core disclosed by the utility model has the advantage of high strength of the graphite tube, and a complete metal protective sleeve composed of two half-cage protective sleeves is detachably installed on the outer side. When a small-volume object strongly impacts the tube, the tube first impacts a plurality of vertical ribs to deform the ribs, and the utility model has better toughness, and the graphite inner core tube of the polypropylene graphite tube is protected from being penetrated and damaged by the small-volume object. The utility model has a long service life, and solves the problem that the existing polypropylene graphite tube with an internally reinforced core has high hardness, strong toughness and is not easy to be damaged when the stress area is large, but when the stress area is small, sharp objects can directly penetrate into the carbon fiber material and directly destroy its structure, and the carbon fiber material is not only expensive, but also impossible to be perfectly repaired, and needs to be replaced with a new one as soon as it is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a polypropylene graphite tube with an internally reinforced core according to an embodiment of the utility model;

[0015] Figure 2 for Figure 1 The structural diagram at A in the middle;

[0016] Figure 3 This is a schematic cross-sectional structure diagram of a polypropylene graphite tube with an internally reinforced core according to an embodiment of the utility model;

[0017] Figure 4 This is a schematic structural diagram of a half-cage protective sleeve of a polypropylene graphite tube with an internal reinforced core according to an embodiment of the utility model.

[0018] In the figure: 1. flange; 2. half cage protective sleeve; 3. vertical hoop mouth strip; 4. screw hole; 5. bolt; 6. nut; 7. graphite core tube; 8. half hoop ring; 9. vertical rib; 10. polypropylene tube. DETAILED DESCRIPTION

[0019] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0020] See also Figures 1 to 4 In an embodiment of the utility model, a polypropylene graphite tube with an internally reinforced core comprises a polypropylene tube 10, and the outer wall of the polypropylene tube 10 is detachably mounted with a complete protective sleeve consisting of two half-cage protective sleeves 2, and the half-cage protective sleeve 2 comprises a plurality of half-hoop rings 8 which are arranged in a straight line and equidistantly and can fit tightly against the outer wall of the polypropylene tube 10, and the outer walls of the plurality of half-hoop rings 8 are all welded with a plurality of vertical ribs 9 in a circumferentially equidistant array and are interconnected by the plurality of vertical ribs 9. The polypropylene graphite tube with an internally reinforced core disclosed in the utility model has the advantage of high strength of the graphite tube, and a complete metal protective sleeve consisting of two half-cage protective sleeves 2 can be detachably mounted on the outer side, and when it is hit by a small object with great force, the graphite inner core tube 7 of the polypropylene graphite tube is protected from being penetrated or damaged by the small object.

[0021] Among them, a graphite inner core tube 7 is fixedly installed on the inner wall of the polypropylene tube 10 to increase the strength of the entire pipeline; wherein, the vertical hoop mouth strips 3 welded at both ends of the half-cage protective sleeve 2 are provided with screw holes 4 at both upper and lower ends, and the two half-cage protective sleeves 2 are detachably connected to each other through the screw holes 4, bolts 5 and nuts 6 on the vertical hoop mouth strips 3, so that the half-cage protective sleeves 2 are convenient to install; wherein, the half-cage protective sleeves 2 are made of high-toughness metal material and are not easily damaged by impact; wherein, flanges 1 are fixedly installed on the top and bottom of the polypropylene tube 10, so that the pipelines can be conveniently spliced ​​together.

[0022] The working principle of the utility model is as follows: the polypropylene graphite tube with an internally reinforced core disclosed by the utility model has the advantage of high strength of the graphite tube, and is detachably mounted on the outer side with a complete metal protective sleeve composed of two half-cage protective sleeves 2. The two half-cage protective sleeves 2 are firstly wrapped outside the polypropylene tube 10 to form a complete metal protective sleeve, and then the two ends of the vertical hoop mouth strips 3 of the two half-cage protective sleeves 2 are connected together with bolts 5 and nuts 6. When a small-volume object hits strongly, it first hits a plurality of vertical ribs 9. When the vertical ribs 9 cannot withstand the impact force, the vertical ribs 9 are first deformed to resolve the impact force of the small-volume object, so that the vertical ribs 9 cannot continue to extend into and hit the polypropylene tube 10 and the graphite inner core tube 7. The utility model has better toughness, protects the graphite inner core tube 7 of the polypropylene graphite tube from being penetrated and worn out by the small-volume object, and has a long service life.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A polypropylene graphite tube with an internally reinforced core, comprising a polypropylene tube (10), characterized in that: The outer wall of the polypropylene tube (10) is detachably mounted with a complete protective sleeve consisting of two half-cage protective sleeves (2), wherein the half-cage protective sleeve (2) comprises a plurality of half-hoops (8) arranged in a straight line and equidistantly and capable of tightly fitting the outer wall of the polypropylene tube (10), and the outer walls of the plurality of half-hoops (8) are all welded with a plurality of vertical ribs (9) in a circumferentially equidistant array and are interconnected via the plurality of vertical ribs (9).

2. The polypropylene graphite tube with an internally reinforced core according to claim 1, characterized in that: A graphite inner core tube (7) is fixedly mounted on the inner side wall of the polypropylene tube (10).

3. The polypropylene graphite tube with an internally reinforced core according to claim 1, characterized in that: The vertical hoop mouth strips (3) welded at both ends of the half-cage protective sleeve (2) are provided with screw holes (4) at both upper and lower ends, and the two half-cage protective sleeves (2) are detachably connected to each other via the screw holes (4), bolts (5) and nuts (6) on the vertical hoop mouth strips (3).

4. The polypropylene graphite tube with an internally reinforced core according to claim 3, characterized in that: The half-cage protective cover (2) is made of a high-toughness metal material.

5. The polypropylene graphite tube with an internally reinforced core according to claim 1, characterized in that: Flanges (1) are fixedly mounted on the top and bottom of the polypropylene tube (10).

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