Polyurethane heat preservation pipe with anti-skid structure
By introducing connecting sleeves and fixing sleeves into the polyurethane insulation pipe, and using components such as limit baffles, fixing sliders and locking wedges to achieve mechanical self-locking and buffering, the problem of cumbersome docking operations of traditional polyurethane insulation pipes is solved, and a fast and simple docking and disassembly process is realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO DONGHUA ENERGY SOURCE EQUIP MFG CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-02
Smart Images
Figure CN224315716U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermal insulation pipe technology, and in particular to a polyurethane thermal insulation pipe with an anti-slip structure. Background Technology
[0002] When transporting high-temperature or low-temperature fluids, in order to ensure efficient heat insulation of the fluid and reduce energy loss during the transportation process, polyurethane insulated pipes are usually used to transport high-temperature or low-temperature fluids. Existing high-temperature or low-temperature fluids are usually composed of a steel pipe body, a polyurethane foam layer and a protective layer.
[0003] For example, utility model application CN202120544372.6 discloses a polyurethane anti-corrosion and heat-insulating pipe. Specifically, this utility model relates to the technical field of heat-insulating pipes, and in particular to a polyurethane anti-corrosion and heat-insulating pipe. It can avoid direct contact between the anti-corrosion layer and the ground, play a certain protective role for the anti-corrosion layer, reduce the occurrence of damage to the anti-corrosion layer during the rolling movement of the heat-insulating pipe, and reduce the amount of subsequent repair work. It includes an inner pipe and a sleeve. The outer wall of the inner pipe is covered with a polyurethane insulation layer, and the sleeve is sleeved on the outside of the polyurethane insulation layer. The outer wall of the sleeve is provided with an anti-corrosion layer. It also includes a first expansion pipe and a second expansion pipe. The first expansion pipe and the second expansion pipe are respectively fixedly installed on the left and right sides of the inner pipe. The diameter of the first expansion pipe and the second expansion pipe on the side away from the inner pipe is larger than the outer diameter of the inner pipe.
[0004] However, for traditional polyurethane insulation pipes, when connecting polyurethane insulation pipes in parts that require frequent disassembly or maintenance (such as interfaces of instruments and equipment like valves, flow meters, and pressure gauges), flanges are usually used to fix the connected polyurethane insulation pipes. However, when using flanges to fix the connection of polyurethane insulation pipes, workers need to carefully align the threaded holes of the flange and then screw in the bolts one by one to tighten them, which is a rather cumbersome operation and inconvenient to use. Utility Model Content
[0005] In view of this, the present invention provides a polyurethane insulation pipe with an anti-slip structure, which has a connecting sleeve and a fixing sleeve for easy docking of polyurethane insulation pipes. During docking, the limiting baffle is first moved, causing it to slide within the fixing sleeve and compress the fixing spring, preventing the limiting baffle from affecting the movement of the connecting ring. When the connecting sleeve is inserted into the fixing sleeve, it compresses the locking wedge, causing the locking wedge to move the fixing slider. As the fixing slider moves, it drives the connecting ring and the guide slide plate to move. As the guide slide plate moves... When the connecting spring is compressed, after the connecting sleeve is fully inserted into the fixing sleeve, the locking groove is aligned with the position of the locking wedge. This allows the locking wedge to reset as the connecting spring rebounds and insert into the locking groove, fixing the main body of the connected steel pipe. The control groove allows workers to easily move the connecting ring when disassembling the polyurethane insulation pipe. After the connection is completed, simply release the limiting baffle, allowing it to rebound under the elastic potential energy of the fixing spring, causing the limiting baffle to re-insert into the limiting groove and limit the position of the connecting ring.
[0006] This utility model provides a polyurethane insulation pipe with an anti-slip structure, specifically comprising: a steel pipe body; a polyurethane foam layer on the outer wall of the steel pipe body; a protective layer on the outer wall of the polyurethane foam layer; a connecting sleeve fixedly connected to the first end of the steel pipe body; locking grooves arranged in a ring array on the outside of the connecting sleeve; a fixing sleeve fixedly connected to the end of the steel pipe body; two connecting rings symmetrically slidably connected to the outside of the fixing sleeve; a set of limiting grooves symmetrically arranged on the outside of each of the two connecting rings; a set of fixing sliders fixedly connected to the inside of each of the two connecting rings; both sets of fixing sliders slidably connected inside the fixing sleeve; and multiple sets of fixing wedges fixedly connected in a ring array on the outside of the connecting sleeve.
[0007] Optionally, the fixing sleeve has multiple sets of fixing wedge grooves arranged in a ring array; each set of fixing wedge grooves is a wedge-shaped groove structure; the positions of the multiple sets of fixing wedge grooves are respectively aligned with the positions of multiple sets of fixing wedge blocks.
[0008] Optionally, a set of rubber pads is symmetrically fixedly connected in each of the multiple sets of fixed wedge grooves; the multiple sets of rubber pads are respectively aligned with the positions of the multiple sets of fixed wedge blocks; the multiple sets of rubber pads are all wedge-shaped plate structures made of rubber material.
[0009] Optionally, a set of guide slides is fixedly connected to the outside of each of the two sets of fixed sliders; a set of connecting springs is fixedly connected to the outside of each of the two sets of guide slides; the ends of each of the two sets of connecting springs are fixedly connected inside the fixed sleeve; a control groove is opened on the outside of each of the two connecting rings; a set of locking wedges is fixedly connected to the inside of each of the two sets of fixed sliders; the positions of the two sets of locking wedges are respectively aligned with the positions of the two sets of locking slots.
[0010] Optionally, two sets of limiting baffles are symmetrically slidably connected inside the fixed sleeve; a set of fixing springs is fixedly connected to the outside of each of the two sets of limiting baffles; the positions of the two sets of limiting baffles are respectively aligned with the positions of the two sets of limiting grooves.
[0011] Optionally, the outer side of the protective layer is fixedly connected to multiple sets of anti-slip blocks in a ring array; the outer side of the protective layer is fixedly connected to multiple sets of anti-slip strips in a ring array; the multiple sets of anti-slip strips are respectively arranged in an alternating pattern with the multiple sets of anti-slip blocks.
[0012] Beneficial effects
[0013] In the process of connecting polyurethane insulated pipes, this utility model involves fitting a connecting sleeve onto the steel pipe body. The connecting sleeve is then inserted into a fixed sleeve, and a fixed wedge is inserted into a fixed wedge groove. The angle between the fixed wedge and the fixed wedge groove creates a mechanical self-locking mechanism. When the fixed wedge is inserted into the fixed wedge groove, the axial thrust is converted into a positive pressure perpendicular to the inclined plane, ensuring a tight fit. Even if the pipe is subjected to axial tensile forces such as stress caused by thermal expansion and contraction, the friction of the inclined plane prevents the wedge from dislodging. Simultaneously, when the fixed wedge is inserted into the fixed wedge groove, the rubber pad eliminates the interface gap. Furthermore, when the polyurethane insulated pipe vibrates, the rubber pad's buffering effect absorbs vibration energy, preventing the fixed wedge from loosening due to resonance. When the connecting sleeve is inserted into the fixed sleeve, it presses against the locking wedge. Subsequently, through a series of transmissions, the locking wedge is inserted into the locking slot, fixing the connected steel pipe body. The operation is simple and quick, effectively reducing the labor intensity of workers, improving the convenience of polyurethane insulated pipes, and making them more convenient to use. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0015] In the attached diagram:
[0016] Figure 1 This is a schematic diagram of the isometric structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the left-side axonometric structure of this utility model.
[0018] Figure 3 This is a utility model Figure 2 A magnified structural diagram at point A.
[0019] Figure 4 This is an isometric structural diagram of the anti-slip block of this utility model.
[0020] Figure 5 This is a utility model Figure 4 A magnified structural diagram at point B.
[0021] Figure 6 This is an isometric structural diagram of the connecting ring of this utility model.
[0022] Figure 7 This is a cross-sectional structural diagram of the fixing sleeve of this utility model.
[0023] Figure 8 This is a utility model Figure 7 A magnified structural diagram at point C.
[0024] List of reference numerals
[0025] 1. Steel pipe body; 101. Polyurethane foam layer; 102. Protective layer; 103. Anti-slip block; 104. Anti-slip strip; 105. Connecting sleeve; 106. Fixing wedge; 107. Locking groove; 108. Fixing sleeve; 109. Fixing wedge groove; 110. Rubber pad; 111. Connecting ring; 112. Control groove; 113. Fixing slider; 114. Locking wedge; 115. Guide slide plate; 116. Connecting spring; 117. Limiting groove; 118. Limiting baffle; 119. Fixing spring. Detailed Implementation
[0026] To make the objectives, solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.
[0027] Example 1:
[0028] This utility model proposes a polyurethane insulation pipe with an anti-slip structure. Please refer to it. Figures 1 to 8 Includes: steel pipe body 1;
[0029] The outer wall of the steel pipe body 1 is provided with a polyurethane foam layer 101; the outer wall of the polyurethane foam layer 101 is provided with a protective layer 102; a connecting sleeve 105 is fixedly connected to the first end of the steel pipe body 1; a locking groove 107 is provided in a ring array on the outside of the connecting sleeve 105; a fixing sleeve 108 is fixedly connected to the end of the steel pipe body 1; two connecting rings 111 are symmetrically slidably connected to the outside of the fixing sleeve 108; a set of limiting grooves 117 are symmetrically provided on the outside of the two connecting rings 111; a set of fixing sliders 113 are fixedly connected to the inside of the two connecting rings 111; the two sets of fixing sliders 113 are slidably connected inside the fixing sleeve 108; multiple sets of fixing wedges 106 are fixedly connected in a ring array on the outside of the connecting sleeve 105.
[0030] The fixed sleeve 108 has multiple sets of fixed wedge grooves 109 arranged in a ring array inside; each set of fixed wedge grooves 109 has a wedge-shaped groove structure; the multiple sets of fixed wedge grooves 109 are respectively aligned with the positions of multiple sets of fixed wedge blocks 106.
[0031] Each of the multiple sets of fixed wedge grooves 109 has a set of rubber pads 110 symmetrically fixedly connected; the multiple sets of rubber pads 110 are respectively aligned with the positions of the multiple sets of fixed wedge blocks 106; the multiple sets of rubber pads 110 are all wedge-shaped plate structures made of rubber material.
[0032] Each of the two sets of fixed sliders 113 is fixedly connected to a set of guide slides 115; each of the two sets of guide slides 115 is fixedly connected to a set of connecting springs 116; the ends of the two sets of connecting springs 116 are fixedly connected inside the fixed sleeve 108; each of the two connecting rings 111 has a control groove 112 on its outer side; each of the two sets of fixed sliders 113 is fixedly connected to a set of locking wedges 114; the two sets of locking wedges 114 are respectively aligned with the positions of the two sets of locking slots 107.
[0033] Two sets of limiting baffles 118 are symmetrically slidably connected inside the fixed sleeve 108; a set of fixing springs 119 are fixedly connected to the outside of each set of limiting baffles 118; the positions of the two sets of limiting baffles 118 are respectively aligned with the positions of the two sets of limiting grooves 117.
[0034] The specific usage and function of this embodiment are as follows: During the connection process of polyurethane insulation pipes, the connecting sleeve 105 is fitted onto the steel pipe body 1. At this time, the connecting sleeve 105 will be inserted into the fixing sleeve 108. A sealing ring is provided on the inner side of the connecting sleeve 105 to ensure the sealing effect after connection. When the connecting sleeve 105 is inserted into the fixing sleeve 108, the fixing wedge 106 will be inserted into the fixing wedge groove 109. The inclined angle of the fixing wedge 106 and the fixing wedge groove 109 will form a mechanical self-locking mechanism. When the fixing wedge 106 is inserted into the fixing wedge groove 109, the axial thrust will be converted into a positive pressure perpendicular to the inclined plane, so that the two are tightly fitted. Even if the pipeline is subjected to axial tensile forces such as stress generated by thermal expansion and contraction, the friction of the inclined plane can prevent the wedge block from dislodging. Thus, the fixed wedge block 106 and the fixed wedge groove 109 are used to position and initially connect the steel pipe body 1 to be connected. When the fixed wedge block 106 is inserted into the fixed wedge groove 109, the rubber pad 110 is squeezed by the fixed wedge block 106. After being squeezed, the rubber pad 110 generates an elastic reaction force, causing the rubber pad 110 to press against the fixed wedge block 106, eliminating the interface gap. Simultaneously, when the polyurethane insulation pipe vibrates, the buffering effect of the rubber pad 110 can absorb vibration energy, preventing the fixed wedge block 106 from loosening due to resonance. When the connecting sleeve 105 is inserted into the fixed sleeve 108, the connecting sleeve 105 will squeeze the locking wedge block 114, causing the locking wedge block 114 to move the fixed slider 113. As the fixed slider 113 moves, it will drive the connecting ring 111 and the guide slide plate 115 to move. The movement of 115 will compress the connecting spring 116. After the connecting sleeve 105 is fully inserted into the fixing sleeve 108, the locking groove 107 is aligned with the locking wedge 114, thereby causing the locking wedge 114 to reset with the rebound of the connecting spring 116 and insert into the locking groove 107 to fix the connected steel pipe body 1. The setting of the control groove 112 makes it convenient for workers to pull the connecting ring 111 to move when disassembling the polyurethane insulation pipe. During docking, the limiting baffle 118 is first moved to slide within the fixed sleeve 108 and compress the fixed spring 119, preventing the limiting baffle 118 from affecting the movement of the connecting ring 111. After docking, the limiting baffle 118 is simply released, allowing it to rebound under the elastic potential energy of the fixed spring 119, so that the limiting baffle 118 is reinserted into the limiting groove 117, thus limiting the position of the connecting ring 111.
[0035] Example 2:
[0036] Based on Example 1, please refer to Figures 1 to 2It includes: anti-slip blocks 103 and anti-slip strips 104. Multiple sets of anti-slip blocks 103 are fixedly connected to the outside of the protective layer 102 in a ring array. Multiple sets of anti-slip strips 104 are fixedly connected to the outside of the protective layer 102 in a ring array. The multiple sets of anti-slip strips 104 are respectively arranged in an alternating manner with the multiple sets of anti-slip blocks 103.
[0037] The specific usage and function of this embodiment: By setting the anti-slip block 103 and anti-slip strip 104, when the steel pipe body 1 is placed on the ground, the anti-slip block 103 and anti-slip strip 104 can increase the friction between the anti-slip block 103 and the ground, preventing the polyurethane insulation pipe from rolling. At the same time, when gripping the polyurethane insulation pipe, the anti-slip block 103 and anti-slip strip 104 can also increase the friction.
[0038] The following points should be noted in this article:
[0039] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.
[0040] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.
[0041] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.
Claims
1. A polyurethane insulation pipe with an anti-slip structure, comprising: A steel pipe body (1); the outer wall of the steel pipe body (1) is provided with a polyurethane foam layer (101); the outer wall of the polyurethane foam layer (101) is provided with a protective layer (102); characterized in that a connecting sleeve (105) is fixedly connected to the first end of the steel pipe body (1); a locking groove (107) is opened in a ring array on the outside of the connecting sleeve (105); a fixing sleeve (108) is fixedly connected to the end of the steel pipe body (1); two connecting rings (111) are symmetrically slidably connected to the outside of the fixing sleeve (108); a set of limiting grooves (117) are symmetrically opened on the outside of the two connecting rings (111); a set of fixing sliders (113) are fixedly connected to the inside of the two connecting rings (111); the two sets of fixing sliders (113) are slidably connected inside the fixing sleeve (108); multiple sets of fixing wedges (106) are fixedly connected in a ring array on the outside of the connecting sleeve (105).
2. The polyurethane insulation pipe with an anti-slip structure as described in claim 1, characterized in that: The fixed sleeve (108) has multiple sets of fixed wedge grooves (109) arranged in a ring array inside; the multiple sets of fixed wedge grooves (109) are all wedge-shaped groove structures; the multiple sets of fixed wedge grooves (109) are respectively aligned with the positions of multiple sets of fixed wedge blocks (106).
3. The polyurethane insulation pipe with an anti-slip structure as described in claim 2, characterized in that: Each of the multiple sets of fixed wedge grooves (109) is symmetrically fixed with a set of rubber pads (110); the multiple sets of rubber pads (110) are respectively aligned with the positions of the multiple sets of fixed wedge blocks (106); the multiple sets of rubber pads (110) are all wedge-shaped plate structures made of rubber material.
4. The polyurethane insulation pipe with an anti-slip structure as described in claim 1, characterized in that: A set of guide slides (115) is fixedly connected to the outside of each of the two sets of fixed sliders (113); a set of connecting springs (116) is fixedly connected to the outside of each of the two sets of guide slides (115); the ends of the two sets of connecting springs (116) are fixedly connected to the inside of the fixed sleeve (108); a control groove (112) is opened on the outside of each of the two connecting rings (111); a set of locking wedges (114) is fixedly connected to the inside of each of the two sets of fixed sliders (113); the two sets of locking wedges (114) are respectively aligned with the positions of the two sets of locking slots (107).
5. The polyurethane insulation pipe with an anti-slip structure as described in claim 1, characterized in that: The fixed sleeve (108) has two sets of limiting baffles (118) symmetrically slidably connected inside; a set of fixing springs (119) is fixedly connected to the outside of each of the two sets of limiting baffles (118); the two sets of limiting baffles (118) are respectively aligned with the positions of the two sets of limiting grooves (117).
6. The polyurethane insulation pipe with an anti-slip structure as described in claim 1, characterized in that: The protective layer (102) has multiple sets of anti-slip blocks (103) fixedly connected in a ring array on its exterior; the protective layer (102) has multiple sets of anti-slip strips (104) fixedly connected in a ring array on its exterior; the multiple sets of anti-slip strips (104) are respectively arranged in an alternating pattern with the multiple sets of anti-slip blocks (103).