Heat preservation pipeline connecting structure

Abstract

The utility model discloses a heat preservation pipeline connecting structure, which relates to the technical field of pipeline connection and comprises a connecting main pipe, an upper heat preservation sleeve and a lower heat preservation sleeve which are symmetrically arranged on the outer side wall of the connecting main pipe, and a heat preservation pipeline A and a heat preservation pipeline B which are symmetrically arranged at the two ends of the connecting main pipe. The fastening cylinder is fixedly installed on the outer side wall of the lower heat preservation sleeve, a movable cavity is formed in the fastening cylinder, a fastening threaded cavity is formed in the top end of the fastening cylinder, a limiting plate is arranged in the movable cavity in a sliding mode, and a functional spring is arranged in the movable cavity. The fastening mechanism is arranged, the threaded rod is sequentially installed in the threaded hole and the fastening threaded cavity in a threaded mode, the clamping block is inserted into the clamping groove, along with continuous rotation of the threaded rod, the threaded rod goes deep into the movable cavity, the limiting plate compresses the functional spring, the threaded rod makes closer contact with the threaded hole and an internal thread of the fastening threaded cavity, and therefore the function spring can be fastened. And the sealing performance of the device is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a thermal insulation pipeline connection structure. Background Art

[0002] Benzene is a key chemical raw material, widely used in synthetic resins, dyes, pharmaceuticals, and other fields. As a flammable and volatile organic solvent, benzene has strict temperature requirements during storage and transportation. To ensure production safety, reduce energy consumption, and improve economic efficiency, effective insulation of benzene pipelines is crucial. From a safety perspective, benzene has a low flash point and high vapor pressure, meaning it quickly evaporates into gas at room temperature, making it highly susceptible to fire or even explosion when exposed to ignition sources. Proper insulation measures can effectively control the temperature within benzene pipelines, reducing the amount of volatilization caused by temperature fluctuations and thereby mitigating potential safety risks.

[0003] Pipeline connections are often the most susceptible to thermal bridges in a system, making it crucial to design a pipe connection structure that ensures both connection strength and good thermal insulation. Traditional pipe connection methods primarily include welding, flange connections, and threaded connections. While welding provides strong mechanical strength, it struggles to achieve ideal thermal insulation at the joint. While flange connections are easy to disassemble and repair, their large contact area can easily lead to heat loss. Threaded connections are typically suitable for small-diameter pipes and suffer from relatively poor sealing and thermal insulation performance. Therefore, a thermally insulated pipe connection structure is needed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art, that is, the relatively poor sealing and heat preservation performance, and to propose a heat preservation pipe connection structure.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A thermal insulation pipe connection structure includes a connecting main pipe, an upper thermal insulation sleeve and a lower thermal insulation sleeve are symmetrically arranged on the outer side wall of the connecting main pipe, and thermal insulation pipes A and thermal insulation pipes B are symmetrically arranged at both ends of the connecting main pipe. The outer sides of the upper thermal insulation sleeve and the lower thermal insulation sleeve are provided with several groups of fastening mechanisms. The fastening mechanism includes a fastening cylinder, which is fixedly installed on the outer side wall of the lower thermal insulation sleeve, a movable cavity is provided in the fastening cylinder, a fastening threaded cavity is provided at the top of the fastening cylinder, a limit plate is slidably provided in the movable cavity, a functional spring is provided in the movable cavity, and the functional spring is elastically connected between the bottom end of the limit plate and the bottom end of the movable cavity.

[0007] Preferably, the fastening threaded cavity is communicated with the movable cavity, and the fastening threaded cavity extends to the top of the fastening cylinder. A fastening block is fixedly mounted on the outer wall of the upper insulation sleeve, and a threaded hole is provided through the center of the fastening block. The threaded hole is coaxially arranged with the fastening threaded cavity.

[0008] A threaded rod is threadedly installed in the threaded hole, the bottom end of the threaded rod is threadedly installed in the fastening threaded cavity, a clamping block is fixedly installed at the bottom end of the threaded rod, a clamping seat is rotatably installed at the top end of the limit plate, a clamping groove is opened at the top end of the clamping seat, and the clamping block is arranged in the clamping groove;

[0009] The engaging seat is movably arranged in the fastening thread cavity, and a fixed handle is fixedly installed on the top of the threaded rod;

[0010] It is used to fasten the upper insulation sleeve and the lower insulation sleeve together. After the upper insulation sleeve and the lower insulation sleeve are matched, that is, when the fastening cylinder corresponds to the fastening block, rotate the fixing handle, and the threaded rod is threadedly installed in the threaded hole and the fastening thread cavity in sequence, so that the locking block is inserted into the locking groove, and continue to rotate the fixing handle. As the threaded rod continues to rotate, the threaded rod penetrates into the active cavity, and the limit plate compresses the functional spring. The functional spring gives the threaded rod a vertical upward force, so that the threaded rod is in closer contact with the threaded hole and the internal thread of the fastening thread cavity, thereby ensuring the sealing of the device.

[0011] Preferably, the connecting main pipe is symmetrically provided with connecting grooves at both ends, the insulation pipe A and the insulation pipe B are symmetrically arranged in the connecting grooves, the outer diameter of the connecting groove is consistent with the outer diameter of the insulation pipe A and the insulation pipe B, and the inner diameter of the connecting groove is consistent with the inner diameter of the insulation pipe A and the insulation pipe B;

[0012] The two ends of the connecting main pipe are symmetrically fixed with guide rings, the outer diameter of the guide ring is consistent with the inner diameter of the insulation pipe A and the insulation pipe B, and the inner wall of the guide ring is provided with an arc surface;

[0013] It is used to connect the insulated pipe A and the insulated pipe B by snapping them together, while ensuring smoother transportation between the insulated pipe A and the insulated pipe B.

[0014] Preferably, a plurality of insulation cavities are provided in the upper insulation sleeve and the lower insulation sleeve, electric heating wires are fixedly installed in the insulation cavities, and sealing plates are symmetrically fixedly installed at both ends of the upper insulation sleeve and the lower insulation sleeve, and sealing rubber strips are fixedly installed on the inner side walls of the sealing plates and the adjacent sides of the upper insulation sleeve and the lower insulation sleeve;

[0015] The inner diameters of the upper and lower insulation sleeves are consistent with the outer diameters of the connecting main pipes, the inner diameters of the sealing plate are smaller than the inner diameters of the upper and lower insulation sleeves, the inner diameters of the sealing plate are larger than the outer diameters of the insulation pipes A and B, and the sealing rubber strips on the inner side walls of the sealing plate are in contact with the outer side walls of the insulation pipes A and B;

[0016] It is used to increase the insulation effect and airtightness of the device. The electric heating wire in the insulation cavity heats the upper insulation sleeve and the lower insulation sleeve. The sealed rubber strip on the inner wall of the sealing plate fits with the outer wall of the insulation pipe A and the insulation pipe B. The sealed rubber strips of the upper insulation sleeve and the lower insulation sleeve fit with each other to ensure the sealing effect of the device.

[0017] The utility model has the following beneficial effects:

[0018] 1. By setting a fastening mechanism, after the upper insulation sleeve and the lower insulation sleeve are matched, that is, when the fastening cylinder corresponds to the fastening block, rotate the fixing handle, and the threaded rod is threadedly installed in the threaded hole and the fastening thread cavity in sequence, so that the engaging block is inserted into the engaging groove, and continue to rotate the fixing handle. As the threaded rod continues to rotate, the threaded rod penetrates into the active cavity, and the limit plate compresses the functional spring. The functional spring applies a vertical upward force to the threaded rod, so that the threaded rod is in closer contact with the threaded hole and the internal thread of the fastening thread cavity, thereby ensuring the sealing of the device.

[0019] 2. By setting electric heating wires and sealed rubber strips, the electric heating wires in the insulation cavity heat the upper insulation sleeve and the lower insulation sleeve. The sealed rubber strips on the inner wall of the sealed plate fit with the outer walls of the insulation pipe A and the insulation pipe B. The sealed rubber strips of the upper insulation sleeve and the lower insulation sleeve fit with each other to ensure the sealing effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the external structure of a thermal insulation pipe connection structure proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the exploded structure of a thermal insulation pipe connection structure proposed by the utility model;

[0022] Figure 3 This is a schematic structural diagram of the upper insulation cover and the lower insulation cover of the utility model;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the connecting main pipe of the utility model;

[0024] Figure 5 It is a structural diagram of the fastening mechanism of the utility model.

[0025] In the figure: 1. Connecting main pipe; 11. Connecting groove; 12. Guide ring; 2. Upper insulation sleeve; 3. Lower insulation sleeve; 4. Insulated pipe A; 5. Insulated pipe B; 6. Fastening mechanism; 61. Fastening cylinder; 611. Movable cavity; 612. Fastening threaded cavity; 62. Limiting plate; 63. Functional spring; 64. Fastening block; 641. Threaded hole; 65. Threaded rod; 651. Engaging block; 66. Engaging seat; 661. Engaging groove; 67. Fixed handle; 7. Insulation cavity; 8. Electric heating wire; 9. Sealing plate; 91. Sealing rubber strip. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] Reference Figure 1-5 A thermal insulation pipe connection structure includes a connecting main pipe 1, an upper thermal insulation sleeve 2 and a lower thermal insulation sleeve 3 are symmetrically arranged on the outer wall of the connecting main pipe 1, and thermal insulation pipes A4 and thermal insulation pipes B5 are symmetrically arranged at both ends of the connecting main pipe 1. Several groups of fastening mechanisms 6 are arranged on the outer walls of the upper thermal insulation sleeve 2 and the lower thermal insulation sleeve 3. The fastening mechanism 6 includes a fastening cylinder 61, which is fixedly installed on the outer wall of the lower thermal insulation sleeve 3. A movable cavity 611 is defined in the fastening cylinder 61, and a fastening threaded cavity 612 is defined at the top of the fastening cylinder 61. A limit plate 62 is slidingly provided in the movable cavity 611, and a functional spring 63 is provided in the movable cavity 611. The functional spring 63 is elastically connected between the bottom end of the limit plate 62 and the bottom end of the movable cavity 611.

[0029] The fastening threaded cavity 612 is connected to the movable cavity 611, and the fastening threaded cavity 612 passes through to the top of the fastening cylinder 61. A fastening block 64 is fixedly installed on the outer wall of the upper insulation sleeve 2. A threaded hole 641 is set through the center of the fastening block 64. The threaded hole 641 is coaxially arranged with the fastening threaded cavity 612.

[0030] A threaded rod 65 is installed in the threaded hole 641, and the bottom end of the threaded rod 65 is threaded into the fastening threaded cavity 612. A locking block 651 is fixedly installed at the bottom end of the threaded rod 65. A locking seat 66 is rotatably installed at the top of the limiting plate 62. A locking groove 661 is provided at the top of the locking seat 66, and the locking block 651 is arranged in the locking groove 661.

[0031] The engaging seat 66 is movably disposed in the fastening threaded cavity 612 , and a fixed handle 67 is fixedly mounted on the top end of the threaded rod 65 .

[0032] Connecting grooves 11 are symmetrically opened at both ends of the connecting main pipe 1, and the insulated pipe A4 and the insulated pipe B5 are symmetrically arranged in the connecting groove 11. The outer diameter of the connecting groove 11 is consistent with the outer diameter of the insulated pipe A4 and the insulated pipe B5, and the inner diameter of the connecting groove 11 is consistent with the inner diameter of the insulated pipe A4 and the insulated pipe B5.

[0033] Guide rings 12 are symmetrically fixedly installed at both ends of the connecting main pipe 1. The outer diameter of the guide ring 12 is consistent with the inner diameter of the insulation pipe A4 and the insulation pipe B5. The inner wall of the guide ring 12 is arranged with an arc surface.

[0034] Several insulation cavities 7 are provided in the upper insulation sleeve 2 and the lower insulation sleeve 3, and electric heating wires 8 are fixedly installed in the insulation cavity 7. Sealing plates 9 are symmetrically fixedly installed at both ends of the upper insulation sleeve 2 and the lower insulation sleeve 3, and sealing rubber strips 91 are fixedly installed on the inner side walls of the sealing plates 9 and the adjacent sides of the upper insulation sleeve 2 and the lower insulation sleeve 3.

[0035] The inner diameter of the upper insulation sleeve 2 and the lower insulation sleeve 3 is consistent with the outer diameter of the connecting main pipe 1, the inner diameter of the sealing plate 9 is smaller than the inner diameter of the upper insulation sleeve 2 and the lower insulation sleeve 3, the inner diameter of the sealing plate 9 is larger than the outer diameter of the insulated pipe A4 and the insulated pipe B5, and the sealing rubber strip 91 on the inner wall of the sealing plate 9 is in contact with the outer wall of the insulated pipe A4 and the insulated pipe B5.

[0036] In the present invention, the insulation pipe A4 and the insulation pipe B5 are inserted into the connecting groove 11, and the upper insulation sleeve 2 and the lower insulation sleeve 3 are installed. That is, when the fastening cylinder 61 corresponds to the fastening block 64, the fixing handle 67 is rotated, and the threaded rod 65 is threadedly installed in the threaded hole 641 and the fastening threaded cavity 612 in sequence, so that the engaging block 651 is inserted into the engaging groove 661, and the fixing handle 67 is continued to be rotated. As the threaded rod 65 continues to rotate, the threaded rod 65 goes deep into the active cavity 611, and the limiting plate 62 pushes the functional spring 63 into The functional spring 63 exerts a vertical upward force on the threaded rod 65, so that the threaded rod 65 contacts the threaded hole 641 and the internal thread of the fastening threaded cavity 612 more closely, ensuring the sealing of the device. The electric heating wire 8 in the insulation cavity 7 heats the upper insulation sleeve 2 and the lower insulation sleeve 3. The sealed rubber strip 91 on the inner wall of the sealing plate 9 fits with the outer wall of the insulation pipe A4 and the insulation pipe B5, and the sealed rubber strips 91 of the upper insulation sleeve 2 and the lower insulation sleeve 3 fit together to ensure the sealing effect of the device.

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat-insulating pipe connection structure, comprising a connecting main pipe (1), an upper heat-insulating sleeve (2) and a lower heat-insulating sleeve (3) symmetrically provided on the outer side wall of the connecting main pipe (1), heat-insulating pipes A (4) and heat-insulating pipes B (5) symmetrically provided at both ends of the connecting main pipe (1), and a plurality of fastening mechanisms (6) provided on the outer side walls of the upper heat-insulating sleeve (2) and the lower heat-insulating sleeve (3), characterized in that: The fastening mechanism (6) comprises a fastening cylinder (61), the fastening cylinder (61) is fixedly mounted on the outer wall of the lower heat-insulating sleeve (3), a movable cavity (611) is provided in the fastening cylinder (61), a fastening threaded cavity (612) is provided at the top of the fastening cylinder (61), a limiting plate (62) is slidably arranged in the movable cavity (611), a functional spring (63) is arranged in the movable cavity (611), and the functional spring (63) is elastically connected between the bottom end of the limiting plate (62) and the bottom end of the movable cavity (611).

2. The thermal insulation pipe connection structure according to claim 1, characterized in that: The fastening threaded cavity (612) is communicated with the movable cavity (611), and the fastening threaded cavity (612) extends to the top of the fastening cylinder (61). A fastening block (64) is fixedly mounted on the outer wall of the upper thermal insulation sleeve (2). A threaded hole (641) is provided through the center of the fastening block (64), and the threaded hole (641) is coaxially arranged with the fastening threaded cavity (612).

3. The thermal insulation pipe connection structure according to claim 2, characterized in that: A threaded rod (65) is threadedly installed in the threaded hole (641), and the bottom end of the threaded rod (65) is threadedly installed in the fastening threaded cavity (612). A clamping block (651) is fixedly installed at the bottom end of the threaded rod (65), and a clamping seat (66) is rotatably installed at the top end of the limiting plate (62). A clamping groove (661) is provided at the top end of the clamping seat (66), and the clamping block (651) is arranged in the clamping groove (661).

4. The thermal insulation pipe connection structure according to claim 3, characterized in that: The engaging seat (66) is movably arranged in the fastening threaded cavity (612), and a fixed handle (67) is fixedly installed on the top end of the threaded rod (65).

5. The thermal insulation pipe connection structure according to claim 1, characterized in that: The connecting main pipe (1) is symmetrically provided with connecting grooves (11) at both ends. The heat-insulating pipe A (4) and the heat-insulating pipe B (5) are symmetrically arranged in the connecting grooves (11). The outer diameter of the connecting groove (11) is consistent with the outer diameter of the heat-insulating pipe A (4) and the heat-insulating pipe B (5). The inner diameter of the connecting groove (11) is consistent with the inner diameter of the heat-insulating pipe A (4) and the heat-insulating pipe B (5).

6. The thermal insulation pipe connection structure according to claim 5, characterized in that: Guide rings (12) are symmetrically fixedly installed at both ends of the connecting main pipe (1). The outer diameter of the guide ring (12) is consistent with the inner diameter of the insulation pipe A (4) and the insulation pipe B (5). The inner wall of the guide ring (12) is provided with an arc surface.

7. The thermal insulation pipe connection structure according to claim 1, characterized in that: A plurality of insulation chambers (7) are provided in the upper insulation sleeve (2) and the lower insulation sleeve (3), and electric heating wires (8) are fixedly installed in the insulation chambers (7). Sealing plates (9) are symmetrically fixedly installed at both ends of the upper insulation sleeve (2) and the lower insulation sleeve (3), and sealing rubber strips (91) are fixedly installed on the inner side walls of the sealing plates (9) and the adjacent sides of the upper insulation sleeve (2) and the lower insulation sleeve (3).

8. The thermal insulation pipe connection structure according to claim 7, characterized in that: The inner diameters of the upper insulation sleeve (2) and the lower insulation sleeve (3) are consistent with the outer diameter of the connecting main pipe (1); the inner diameter of the sealing plate (9) is smaller than the inner diameters of the upper insulation sleeve (2) and the lower insulation sleeve (3); the inner diameter of the sealing plate (9) is larger than the outer diameters of the insulation pipe A (4) and the insulation pipe B (5); and the sealing rubber strip (91) on the inner wall of the sealing plate (9) is in contact with the outer wall of the insulation pipe A (4) and the insulation pipe B (5).

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