Unsaturated polyester resin pipeline protection device

Abstract

The present invention provides an unsaturated polyester resin pipeline protection device, comprising a shell, wherein the shell is an elastic member, the shell is penetrated along the axial direction of the pipeline, the shell can be closed along the circumferential direction of the pipeline, and the shell is coated on the outside of the pipeline; sealing members are arranged at both ends of the penetrated shell, the sealing member is an elastic member, a through hole is arranged in the middle of the sealing member along the axial direction of the pipeline, and the diameter of the through hole is the same as the outer diameter of the pipeline; the sealing member is provided with an opening, the sealing member can be buckled along the circumferential direction of the pipeline, and when the shell is closed along the circumferential direction of the pipeline, the sealing member is buckled to form a zigzag seam, and the sealing member can cover the outer wall of the pipeline to seal it, thereby reducing the outflow of the material in the pipeline from the gap between the sealing member and the outer wall of the pipeline when the pipeline leaks.

Description

Technical Field

[0001] The invention relates to the field of pipeline protection, in particular to an unsaturated polyester resin pipeline protection device. Background Art

[0002] Unsaturated polyester pipe is a composite material pipe composed of unsaturated polyester resin, glass fiber cloth and other auxiliary materials. Its inner wall is smooth and the outer wall is covered with glass fiber cloth. It has good acid and alkali resistance, etc. However, it is easy to crack or age in harsh operating environments and for long periods of time. It is very important to protect the pipe to increase its service life.

[0003] The principle of existing protective devices is mostly to set seals to separate the pipeline from the external environment. They are roughly divided into integrated and split types. The integrated protective device must be installed before the pipeline is connected. After the pipeline is connected, it is stretched to cover the outside of the pipeline. The pipeline needs to be disconnected during replacement and maintenance; the split protective device is provided with a pipeline through hole and a notch, and is covered on the pipeline through the notch, and then the notch and the pipeline through hole are sealed. Both of the above protective devices require an annular seal wrapped around the pipeline diameter at the pipeline through hole, but when the two ends of the seal are fixed or overlapped after contact, a gap will be generated with the pipeline, and the seal cannot fit around the pipe at the interface. This gap is the main cause of leakage of the protective device. Leakage is easy to splash onto other pipelines and the working environment, and the protection of the pipeline and the working environment cannot be guaranteed.

[0004] The information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] In view of the deficiencies of the prior art, an unsaturated polyester resin pipeline protection device is provided, which can improve the sealing performance between the unsaturated polyester resin pipeline protection device and the pipeline to prevent leakage.

[0006] The above purpose is achieved through the following technical solutions:

[0007] An unsaturated polyester resin pipeline protection device, comprising a shell, the shell being an elastic member, the shell penetrating along the pipeline axis direction, the shell being provided with a mounting opening along the pipeline axis direction, the mounting opening communicating with the inside of the shell and the outside of the shell, the shell being able to be closed at the mounting opening along the pipeline circumferential direction, and the shell covering the outside of the pipeline;

[0008] Sealing members are arranged at both ends of the shell, the sealing members are elastic members, a through hole is arranged in the middle of the sealing member along the axial direction of the pipeline, and the diameter of the through hole is the same as the outer diameter of the pipeline; the sealing member is provided with an opening, and the sealing member can be buckled along the circumferential direction of the pipeline, and when the shell is wrapped along the circumferential direction of the pipeline, the sealing member is buckled to form a zigzag seam.

[0009] Optionally, the seal includes a main body part, a first boss and a first notch are arranged at one end of the main body part, a second boss and a second notch are arranged at the other end of the main body part, one end of the first notch and the second notch are connected to the inner wall surface of the main body part, the first boss and the first notch are arranged along the axial direction of the pipeline, the second boss and the second notch are arranged in the opposite direction of the first boss and the first notch, the first boss cooperates with the second notch, and the second boss cooperates with the first notch.

[0010] Optionally, the first boss and the second boss are arranged in a larger and smaller configuration, and the second notch and the first notch are arranged in a larger and smaller configuration.

[0011] Optionally, a rounded corner is set on the angle between the contact surface of the first boss and the second notch, a rounded corner is set on the angle between the contact surface of the second boss and the first notch, a rounded corner is set at the position where the first notch and the second boss rounded corners correspond, and a rounded corner is set at the position where the second notch and the first boss rounded corners correspond.

[0012] Optionally, a hard metal shell is provided on the inner wall surface of the first boss that matches with the second notch, and a hard metal shell is provided on the inner wall surface of the second boss that matches with the first notch.

[0013] Optionally, the unsaturated polyester resin pipe protection device further includes threaded fasteners, mounting plates are arranged on both sides of the mounting opening, the two mounting plates are connected by the threaded fasteners, and light holes are arranged on the mounting plates for fastening by the threaded fasteners.

[0014] Optionally, the shell includes two half shells, and the two half shells are buckled on the pipeline;

[0015] The seal comprises two split seals, one of which is disposed at each end of the half shell, each of which comprises a main body, one end of which is provided with a first boss and a first notch, and the other end of which is provided with a second boss and a second notch, one end of which is connected to the inner wall surface of the main body, the first boss and the first notch are arranged in a row along the axial direction of the pipeline, and the second boss and the second notch are arranged in a row in the opposite direction of the first boss and the first notch;

[0016] The first boss of each split seal cooperates with the second notch of another split seal, and the second boss of each split seal cooperates with the first notch of another split seal.

[0017] Optionally, an arc-shaped boss is arranged on the inner wall surface of the shell, and the arc-shaped boss is arranged along the circumferential direction of the pipeline. The height of the arc-shaped boss is the distance from the inner wall surface of the shell to the pipeline, which is used to reduce the relative sliding between the shell and the pipeline.

[0018] Optionally, the unsaturated polyester resin pipeline protection device further includes an intelligent monitoring system. A sensor is arranged on the arc-shaped boss. The sensor is connected to the intelligent monitoring system for monitoring the working status of the pipeline.

[0019] Optionally, the unsaturated polyester resin pipeline protection device further includes a discharge valve, a discharge hole is provided on the shell, and the discharge valve is connected to the discharge hole for discharging waste liquid.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention provides seals surrounding the outer wall of the pipeline at both ends of the housing where the housing contacts the pipeline. The seals have openings, and the two ends of the seals can be buckled to form a zigzag joint. The seals can cover the gap between the connection with the pipeline, and block the gap between the connection of the seals and the outer wall of the pipeline in the circumferential direction, so that the sealing effect of the contact between the seals and the pipeline is good, and leakage is reduced.

[0022] 2. The present invention arranges first bosses and second bosses of different sizes for buckling, and the seam between the first boss and the second notch and the seam between the second boss and the first notch are not on the same horizontal line, forming a tortuous seam so that the leaked material will not flow directly from the connected straight seam to the outside of the seal, making it more difficult for the material in the tube to leak.

[0023] 3. The fillets provided at the angles between the first boss, the second boss, the first notch and the second notch mating surfaces of the present invention make the first boss and the second notch, and the second boss and the first notch fit more tightly when mating.

[0024] 4. In the present invention, a hard metal shell is provided at one end of the first boss that cooperates with the second notch and at one end of the second boss that cooperates with the first notch. The ends of the first boss and the second boss are thinner, and it is not easy to fit tightly when matching with the second notch and the first notch. A hard metal shell is provided at the ends of the first boss and the second boss to make the fit tighter and achieve better sealing effect.

[0025] 5. The present invention arranges an arc-shaped boss inside the shell along the circumferential direction of the pipe. The height of the arc-shaped boss is the distance between the inner wall of the shell and the outer wall of the pipe, so that the arc-shaped boss can contact the outer wall of the pipe, making it difficult for the shell and the pipe to rotate and slide relative to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of an unsaturated polyester resin pipeline protection device of the present invention;

[0027] Figure 2 This is a schematic diagram of the explosion structure of an unsaturated polyester resin pipeline protection device of the present invention;

[0028] Figure 3 It is a schematic structural diagram of the sealing member of the present invention;

[0029] Figure 4 Another structural schematic diagram of the sealing member of the present invention;

[0030] Figure 5 It is a schematic diagram of the explosion structure of another embodiment of an unsaturated polyester resin pipeline protection device of the present invention;

[0031] Figure 6 for Figure 5 Schematic diagram of the structure of the middle split seal;

[0032] Figure 7 for Figure 5 Another schematic diagram of the structure of the split seal;

[0033] Figure 8 for Figure 5 Schematic diagram of the structure of the split seal assembly;

[0034] Fig. 9 for Figure 5 A schematic structural diagram of a buckled state of an unsaturated polyester resin pipeline protection device of the present invention;

[0035] Fig.10 for Fig. 9 Schematic diagram of the structure of the middle half shell and the split seal.

[0036] in:

[0037] 100, housing; 110, half housing; 120, mounting opening; 130, mounting plate; 140, light hole; 150, arc-shaped boss;

[0038] 200, sealing member; 210, opening; 220, through hole; 230, first boss; 240, first notch; 250, second boss; 260, second notch; 270, fillet; 280, hard metal shell; 290, split sealing member; 291, split sealing member 1; 292, split sealing member 2;

[0039] 300, threaded fasteners;

[0040] 400, relief valve;

[0041] 1000, pipe; 2000, flange. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] refer to Figures 1 to 10The unsaturated polyester resin pipeline protection device of the present invention is installed at the connection of the pipeline 1000 or the adjacent flange 2000, and is used to protect the entire pipeline 1000 from the external working environment. It includes a shell 100, and the middle part of the shell 100 is set through along the axis direction of the pipeline 1000, and is used to install the pipeline 1000; the shell 100 is an elastic member, which can be deformed after being subjected to force and restores its original state after the external force is removed; the shell 100 is provided with a mounting port 120, and the mounting port 120 is set through along the axis direction of the pipeline 1000, and the mounting port 120 connects the inside of the shell 100 with the outside of the shell 100, and the shell 100 can be closed at the mounting port 120, and the shell 100 is covered and set on the outer wall of the pipeline 1000 through the mounting port 120;

[0046] The two ends of the shell 100 are respectively provided with sealing members 200, and a through hole 220 is provided in the middle of the sealing member 200. The through hole 220 is provided along the axial direction of the pipe 1000, and the diameter of the through hole 220 is the same as the outer diameter of the pipe 1000; the sealing member 200 is an elastic member, which is deformed after being subjected to force and returns to its original state after the external force is removed. There is an opening 210 on the sealing member 200, and the opening 210 is provided along the radial through-through direction of the through hole 220. One end of the opening 210 is communicated with the through hole 220, and the other end is communicated with the outer wall of the sealing member 200. The sealing member 200 can be buckled along the circumferential direction of the pipe 1000, and the sealing member 200 surrounds the outer wall surface of the pipe 1000; the installation port 120 corresponds to the position of the opening 210. When the shell 100 is closed, the sealing member 200 is buckled and forms a tortuous seam, which separates the pipe 1000 inside the shell 100 connected with the sealing member 200 from the outside world, and is used for protecting the pipe 1000.

[0047] In a further embodiment, the seal 200 includes a main body portion, which is an annular structure with an opening, a first boss 230 and a first notch 240 are arranged at one end of the main body portion, and a second boss 250 and a second notch 260 are arranged at the other end of the main body portion, the first boss 230 and the second boss 250 are triangular structures, the first boss 230 and the second boss 250 are surrounded by two intersecting curved surfaces and two parallel planes, the two intersecting curved surfaces are arranged in the same vertical direction, the first boss 230 and The surface of the second boss 250 close to the axis of the pipe 1000 is a curved surface, and the surfaces of the first boss 230 and the second boss 250 close to the axis of the pipe 1000 surround the inner wall surface of the main body to form a through hole 220, and are in contact with the pipe 1000; the shape of the first notch 240 is consistent with the shape of the second boss 250, and the shape of the second notch 260 is consistent with the shape of the first boss 230. The ends of the first notch 240 and the second notch 260 away from the opening 210 are connected to the inner wall surface of the main body;

[0048] The first boss 230 and the first notch 240 are arranged in an axial direction of the pipe 1000, and the second boss 250 and the second notch 260 are arranged in the opposite direction of the arrangement of the first boss 230 and the first notch 240. The first boss 230 cooperates with the second notch 260, and the first boss 230 and the second boss 250 are in contact with one side of the second boss 250 close to the second notch 260; the second boss 250 cooperates with the first notch 240, and the second boss 250 and the first boss 230 are in contact with one side of the first notch 240, and the first boss 230 and When the second notch 260 cooperates with the second boss 250 and the first notch 240, the opening 210 is covered by the first boss 230 and the second boss 250, and the seal 200 wraps the pipe 1000. After the first boss 230 and the second notch 260 cooperate, the gap formed on the inner wall of the seal 200 is not on the extension line of the diameter of the through hole 220 in the vertical direction. After the second boss 250 and the first notch 240 cooperate, the gap formed on the inner wall of the seal 200 is not on the extension line of the diameter of the through hole 220 in the vertical direction.

[0049] It should be supplemented that the unsaturated polyester resin pipe protection device of the present invention also includes a threaded fastener 300, which includes a bolt and a nut; mounting plates 130 are arranged on both sides of the mounting port 120, and the mounting plates 130 are arranged along the axial direction of the pipe 1000. Light holes 140 are arranged on the mounting plates 130 in a direction perpendicular to the axis of the pipe 1000. The light holes 140 on the two mounting plates 130 correspond to each other one by one, the bolts are arranged in the light holes 140, the nuts are threadedly connected to the bolts, and the threaded fasteners 300 cooperate with the light holes 140 to seal the mounting port 120 of the shell 100.

[0050] It should also be added that the shell 100 and the seal 200 are tightly connected, and can be sealed between the shell 100 and the seal 200 by one-piece molding or adhesive connection; a sealing gasket is provided on the mounting plate 130 to increase the sealing performance at the mounting port 120 when the two mounting plates 130 are tightly sealed after the shell 100 is snapped together.

[0051] When protecting the unsaturated polyester resin pipe 1000, the shell 100 is pulled apart from both sides of the installation port 120. At this time, the seals 200 at both ends of the shell 100 are pulled apart from the openings 210. The shell 100 is sleeved on the outer wall of the pipe 1000. The first boss 230 of the seal 200 is matched with the second notch 260, and the second boss 250 is matched with the first notch 240. The seal 200 is then wrapped around the outer wall of the pipe 1000. The two mounting plates 130 are connected and fastened using threaded fasteners 300. The installation port 120 is sealed, and the installation of the present invention is completed.

[0052] In a further embodiment, the sizes of the first boss 230 and the second boss 250 are not equal, so the distance from the upper curved surface of the first boss 230 to the through hole 220 is not equal to the distance from the upper curved surface of the second boss 250 to the through hole 220, and the horizontal seam produced by the cooperation of the first boss 230 and the second notch 260 and the horizontal seam produced by the cooperation of the second boss 250 and the first notch 240 are not on the same horizontal line. If the pipeline 1000 leaks, the material in the pipeline 1000 will be blocked by the tortuous seams of varying heights instead of leaking directly from the horizontal seam, making it more difficult for the material to flow to the outside of the shell 100, and the sealing effect is better.

[0053] In a further embodiment, a fillet 270 is provided at the angle between the contact surfaces of the first boss 230 and the second notch 260, a fillet 270 is provided at the angle between the contact surfaces of the second boss 250 and the first notch 240, a fillet 270 is provided at the corresponding position between the second notch 260 and the fillet 270 of the first boss 230, and a fillet 270 is provided at the corresponding position between the first notch 240 and the fillet 270 of the second boss 250. The fillet 270 is a smooth curved surface, which fits more tightly than the angle between the two planes, and is used to make the gap between the first boss 230 and the second notch 260 smaller when they are matched and between the second boss 250 and the first notch 240 when they are matched, so that when the pipeline 1000 leaks, the liquid is less likely to flow to the outside from the side of the seal 200 connected to the shell 100.

[0054] In a further embodiment, a hard metal shell 280 is provided on the inner wall surface of the first boss 230 that cooperates with the second notch 260, and a hard metal shell 280 is provided on the inner wall surface of the second boss 250 that cooperates with the first notch 240. Because the ends of the first boss 230 and the second boss 250 away from the opening 210 are pointed and cooperate with the second notch 260 and the first notch 240, and the ends are thinner and not easy to fit closely to the second notch 260 and the first notch 240, the hard metal shell 280 is provided to make it easier for the first boss 230 and the second boss 250 to fit closely to the second notch 260 and the first notch 240.

[0055] In another embodiment, reference Figures 5 to 10 The shell 100 includes two half shells 110. Two mounting openings 120 are arranged on the shell 100. The two mounting openings 120 are arranged through along the axis direction of the pipeline 1000. The mounting openings 120 communicate the inside of the shell 100 with the outside of the shell 100. The two mounting openings 120 divide the shell 100 into two half shells 110. The two half shells 110 are buckled and arranged outside the pipeline 1000.

[0056] The sealing member 200 is provided with two openings 210, and the two openings 210 are symmetrically arranged. The sealing member 200 includes two split sealing members 290. The two openings 210 divide the sealing member 200 into two split sealing members 290. One split sealing member 290 is respectively arranged at both ends of each half shell 110.

[0057] The split seal 290 includes a main body, which is an arc-shaped ring structure. A first boss 230 and a first notch 240 are arranged at one end of the main body, and a second boss 250 and a second notch 260 are arranged at the other end of the main body. The first boss 230 and the second boss 250 are structures surrounded by two intersecting curved surfaces and two parallel planes. The two intersecting curved surfaces are arranged in the same vertical direction. The surfaces of the first boss 230 and the second boss 250 close to the axis of the pipeline 1000 are curved surfaces. The surfaces of the first boss 230 and the second boss 250 of the two split seals 290 close to the axis of the pipeline 1000 surround the inner wall surface of the main body to form a through hole 220, and are in contact with the pipeline 1000; the shape of the first notch 240 is in line with the shape of the second boss 250, and the shape of the second notch 260 is in line with the shape of the first boss 230. The ends of the first notch 240 and the second notch 260 away from the opening 210 are connected to the inner wall surface of the main body;

[0058] The first boss 230 and the first notch 240 of each split seal 290 are arranged in an axial direction of the pipe 1000, and the second boss 250 and the second notch 260 are arranged in the opposite direction of the arrangement of the first boss 230 and the first notch 240;

[0059] Define one of the split seals 290 of a seal 200 as split seal one 291, and define the other split seal 290 as split seal two 292. The first boss 230 of split seal one 291 cooperates with the second notch 260 of split seal two 292, and the second boss 250 of split seal one 291 cooperates with the first notch 240 of split seal two 292; the first boss 230 of split seal two 292 cooperates with the second notch 260 of split seal one 291, and the second boss 250 of split seal two 292 cooperates with the first notch 240 of split seal one 291. The two split seals 290 are buckled together, and the seal 200 is buckled together.

[0060] It should be added that the two split seals 290 are exactly the same. One of the two identical split seals 290 is rotated 180° along the through hole 220, and the two split seals 290 are located in a position where they can be snapped together. When it is necessary to protect the unsaturated polyester resin pipeline, two half shells 110 with the same split seals 290 are arranged on both sides of the pipeline 1000, and the openings of the half shells 110 are opposite to each other. The two half shells 110 are snap-fitted and installed on the outside of the pipeline 1000, so that the split seals 290 arranged on the same side of the pipeline 1000 cooperate, and the matched split seals 290 are surrounded on the outer wall of the pipeline 1000. The two mounting plates 130 on the two half shells 110 are connected and fastened using threaded fasteners 300, so that the mounting port 120 is sealed, and the installation of the present invention is completed.

[0061] In a further embodiment, reference Fig.10 An arc-shaped boss 150 is arranged on the inner wall surface of the shell 100, and the arc-shaped boss 150 is arranged around the axis of the pipe 1000. The height of the arc-shaped boss 150 is the distance from the inner wall surface of the shell 100 to the outer wall of the pipe 1000. After the unsaturated polyester resin pipe protection device of the present invention is installed, the arc-shaped boss 150 abuts against the outer wall of the pipe 1000 to reduce the relative sliding between the shell 100 and the pipe 1000.

[0062] In a further embodiment, the unsaturated polyester resin pipeline protection device of the present invention also includes an intelligent monitoring system. Sensors are arranged on the outer surface of the arc boss 150 and the inner wall of the shell 100. The sensors are connected to the intelligent monitoring system to monitor the working status of the pipeline 1000 in real time.

[0063] In a further embodiment, the unsaturated polyester resin pipeline protection device of the present invention further includes a discharge valve 400. A discharge hole is provided on the housing 100. The discharge valve 400 is connected to the discharge hole for discharging waste liquid. The discharge valve 400 can control the waste liquid to flow out or inside the device.

[0064] In a further embodiment, the housing 100 and the sealing member 200 are made of special plastics with strong corrosion resistance and heat resistance.

[0065] It should be supplemented that, when the seal 200 is an integral part, the shell 100 has only one installation port 120. The unsaturated polyester resin pipe protection device of the present invention requires fewer threaded fasteners 300 to seal the installation port 120, and has better sealing performance. When the seal 200 is two split seals 290, each split seal 290 is more convenient and easier to process than the integral seal 200.

[0066] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An unsaturated polyester resin pipeline protection device, characterized in that: The invention comprises a shell, wherein the shell is an elastic member, the shell is penetrated along the axial direction of the pipeline, the shell is provided with a mounting opening along the axial direction of the pipeline, the mounting opening communicates with the inside of the shell and the outside of the shell, the shell can be closed at the mounting opening along the circumferential direction of the pipeline, and the shell is covered on the outside of the pipeline; The two ends of the shell through which the seal is passed are provided with seals, which are elastic members, and a through hole is provided in the middle of the seal along the axial direction of the pipeline, and the diameter of the through hole is the same as the outer diameter of the pipeline; the seal is provided with an opening, and the seal can be buckled along the circumferential direction of the pipeline, and when the shell is covered along the circumferential direction of the pipeline, the seal is buckled to form a zigzag seam, and the seal includes a main body part, a first boss and a first notch are provided at one end of the main body part, a second boss and a second notch are provided at the other end of the main body part, one end of the first notch and the second notch are connected to the inner wall surface of the main body part, the first boss and the first notch are arranged in the axial direction of the pipeline, the second boss and the second notch are arranged in the opposite direction of the first boss and the first notch, the first boss cooperates with the second notch, the second boss cooperates with the first notch, and the first boss and the second boss are arranged in a large and a small manner. The second notch and the first notch are arranged with one larger than the other, a fillet is arranged on the angle between the contact surface of the first boss and the second notch, a fillet is arranged on the angle between the contact surface of the second boss and the first notch, a fillet is arranged at the position where the first notch corresponds to the fillet of the second boss, a fillet is arranged at the position where the second notch corresponds to the fillet of the first boss, the first boss and the second boss are triangular structures, the first boss and the second boss are surrounded by two intersecting curved surfaces and two parallel planes, the two intersecting curved surfaces are arranged in the same vertical direction, the surfaces of the first boss and the second boss close to the axis of the pipeline are curved surfaces, the surfaces of the first boss and the second boss close to the axis of the pipeline surround the inner wall surface of the main part to form a through hole, and are in contact with the pipeline; the shape of the first notch is in line with the shape of the second boss, the shape of the second notch is in line with the shape of the first boss, and the ends of the first notch and the second notch away from the opening are connected to the inner wall surface of the main part.

2. The unsaturated polyester resin pipeline protection device according to claim 1, characterized in that: A hard metal shell is arranged on the inner wall surface of the first boss that matches with the second notch, and a hard metal shell is arranged on the inner wall surface of the second boss that matches with the first notch.

3. The unsaturated polyester resin pipeline protection device according to claim 1, characterized in that: The unsaturated polyester resin pipeline protection device also includes a threaded fastener. Mounting plates are arranged on both sides of the mounting port. The two mounting plates are connected by the threaded fastener. Light holes are arranged on the mounting plates for fastening by the threaded fastener.

4. The unsaturated polyester resin pipeline protection device according to claim 1, characterized in that: An arc-shaped boss is arranged on the inner wall surface of the shell, and the arc-shaped boss is arranged along the circumferential direction of the pipeline. The height of the arc-shaped boss is the distance from the inner wall surface of the shell to the pipeline, which is used to reduce the relative sliding between the shell and the pipeline.

5. The unsaturated polyester resin pipeline protection device according to claim 4, characterized in that: The unsaturated polyester resin pipeline protection device also includes an intelligent monitoring system. A sensor is arranged on the arc-shaped boss. The sensor is connected to the intelligent monitoring system and is used to monitor the working status of the pipeline.

6. The unsaturated polyester resin pipeline protection device according to claim 1, characterized in that: The unsaturated polyester resin pipeline protection device also includes a discharge valve. A discharge hole is arranged on the shell. The discharge valve is connected with the discharge hole for discharging waste liquid.

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