Heating device for natural gas system

Abstract

The utility model discloses a heating device for a natural gas system, which comprises an electric tracing band, the outer side of the electric tracing band is sleeved with a shroud ring, an inner cavity of the shroud ring is provided with a gas delivery pipe, the surface of the gas delivery pipe is fixedly connected with a temperature control device, the inner wall of the shroud ring is provided with a band groove matched with the electric tracing band, and the band groove is fixedly connected with the temperature control device. Two pressing rods are arranged on the outer side of the shroud ring. The electric tracing band is pre-fixed on the surface of the gas conveying pipe through the band groove in the surface of the shroud ring, then the electric tracing band is straightened and tightly attached to the gas conveying pipe, the pressing rod is driven through movement of the bolt rod on the inner wall of the thread groove, and then the pressing rod drives the electric tracing band to move to be tightly attached to the gas conveying pipe through the connecting rod and the pressing block. The heat tracing band can be pre-fixed on the surface of the pipeline, then the heat tracing band is straightened, and inward extrusion force is applied to the heat tracing band, so that the attachment between the heat tracing band and the pipeline is guaranteed, and the aim of adjusting the attachment tightness between the heat tracing band and the pipeline is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas pipeline heating, in particular to a heating device for a natural gas system. Background Art

[0002] In the past, steam pipelines were generally used to heat pipelines, instruments, and containers in the natural gas industry during shutdown. This had the disadvantages of inconvenient construction and difficult maintenance. Currently, electric heating tapes are a better auxiliary tool. The electric heating tapes themselves will emit a certain amount of heat. The heat emitted by the electric heating tapes can play an anti-freeze role, and the heat emitted by the electric heating tapes can also be used to clear accumulated snow.

[0003] When traditional electric heating cables are installed in places such as pipelines, people need to use tape or hoops to fix them. Since it is inconvenient to adjust the straightness of the heating cables after the tape or hoop is fixed, it is also inconvenient to adjust the fit between the heating cables and the pipeline. Therefore, a heating device for a natural gas system is needed. The heating cable can be pre-fixed on the pipeline surface, and then straightened and an inward extrusion force is applied to it, thereby ensuring the fit between the heating cable and the pipeline, thereby achieving the adjustment of the tightness of the fit between the heating cable and the pipeline. Utility Model Content

[0004] The purpose of the utility model is to provide a heating device for a natural gas system, which pre-fixes the electric heating tape by fixing a hoop on the surface of a gas pipe, then straightens the electric heating tape, and then drives the connecting rod to push the pressing block by moving the pressing rod, so that the pressing block pushes the electric heating tape to fit tightly against the gas pipe, so as to solve the technical problems raised by the above-mentioned background technology.

[0005] The utility model provides a technical solution to the above-mentioned technical problems as follows: a heating device for a natural gas system, comprising an electric heating tape: a hoop is sleeved on the outer side of the electric heating tape, a gas pipe is arranged in the inner cavity of the hoop, a temperature control device is fixedly connected to the surface of the gas pipe, a belt groove matched with the electric heating tape is provided on the inner wall of the hoop, two pressure rods are provided on the outer side of the hoop, a bolt rod is installed between the pressure rod and the hoop, a threaded groove matched with the bolt rod is provided on the surface of the hoop, a pressure block groove is provided on the inner wall of the belt groove, a pressure block is arranged in the inner cavity of the pressure block groove, and a connecting rod is fixedly connected between the pressure block and the pressure rod.

[0006] Preferably, the hoop is composed of two half-ring blocks rotatably connected via a rotating shaft, and the two half-ring blocks are fixed by bolts.

[0007] Preferably, two rubber protrusions are fixedly connected to the inner wall of the groove, and the surfaces of the rubber protrusions are in contact with the electric heating tape.

[0008] Preferably, a limiting block adapted to the pressure rod is welded to the outer side of the hoop.

[0009] Preferably, a through hole adapted to the connecting rod is opened on the outer side of the hoop, and a spacer is adhered to the surface of the pressing block, and the spacer is a rubber pad.

[0010] Preferably, the electric heating tape comprises two nickel-plated copper conductors, a self-regulating conductive core is commonly provided on the outside of the two nickel-plated copper conductors, a modified polyolefin insulation layer is provided on the outside of the self-regulating conductive core, a nickel-tin-copper braided layer is wrapped on the outside of the modified polyolefin insulation layer, and an outer sheath is wrapped on the outside of the nickel-tin-copper braided layer.

[0011] Preferably, the temperature control device is internally provided with a surface sensing and environment sensing electronic temperature controller, and the temperature control device is electrically connected to the electric heating tape via a wire.

[0012] 1. The beneficial effects of the utility model are as follows: the utility model pre-fixes the electric heating tape on the surface of the gas pipe through the groove on the surface of the hoop, then straightens the electric heating tape and makes it close to the gas pipe, then drives the pressure rod by the movement of the bolt rod on the inner wall of the threaded groove, and then drives the electric heating tape to move close to the gas pipe through the connecting rod and the pressure block, so that the heating tape can be pre-fixed on the pipeline surface, then straightened and then an inward extrusion force is applied to it, thereby ensuring the fit between the heating tape and the pipeline, thereby achieving the purpose of adjusting the tightness of the fit between the heating tape and the pipeline.

[0013] 2. The utility model limits the position of the electric heating belt on the inner wall of the belt groove by setting the rubber protrusion, thereby avoiding the displacement and flipping of the electric heating belt in the inner cavity of the belt groove and improving the stability of the position of the electric heating belt.

[0014] 3. The utility model limits the movement of the pressure rod by setting a limit block, thereby avoiding the shaking of the pressure rod during movement.

[0015] 4. The utility model provides an isolation pad between the pressing block and the electric heating tape by setting a spacer, thereby avoiding the situation where the pressing block is directly squeezed with the electric heating tape and the surface of the latter is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] in:

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 This is a left side schematic diagram of a hoop and a gas pipe in one embodiment of the utility model;

[0019] Figure 3This is an embodiment of the utility model Figure 2 A partial enlarged view of point A;

[0020] Figure 4 This is an embodiment of the utility model Figure 2 A partial enlarged view of point B in the middle;

[0021] Figure 5 It is a three-dimensional cross-sectional view of an electrically controlled heating belt according to an embodiment of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Electric heating tape, 101. Nickel-plated copper conductor, 102. Conductive core, 103. Modified polyolefin insulation layer, 104. Nickel-tin-copper braided layer, 105. Outer sheath, 2. Hoop, 3. Gas pipe, 4. Temperature control device, 5. Belt groove, 6. Rubber bump, 7. Pressure rod, 8. Bolt rod, 9. Limit block, 10. Thread groove, 11. Pressure block groove, 12. Pressure block, 13. Connecting rod, 14. Spacer. DETAILED DESCRIPTION

[0024] Hereinafter, embodiments of a heating device for a natural gas system according to the present invention will be described with reference to the accompanying drawings.

[0025] Embodiment 1:

[0026] Figure 1-5 A heating device for a natural gas system according to an embodiment of the utility model is shown, which comprises an electric heating tape 1: a hoop 2 is sleeved on the outer side of the electric heating tape 1, the hoop 2 is composed of two half-ring blocks rotatably connected by a rotating shaft, the two half-ring blocks are fixed by bolts, a gas pipe 3 is arranged in the inner cavity of the hoop 2, a temperature control device 4 is fixedly connected to the surface of the gas pipe 3, a belt groove 5 adapted to the electric heating tape 1 is opened on the inner wall of the hoop 2, two rubber protrusions 6 are fixedly connected to the inner wall of the belt groove 5, the surface of the rubber protrusion 6 is fitted with the electric heating tape 1, and the position of the electric heating tape 1 on the inner wall of the belt groove 5 is limited by the setting of the rubber protrusion 6, so as to avoid the displacement and flipping of the electric heating tape 1 in the inner cavity of the belt groove 5, thereby improving the heating performance of the electric heating tape 1. The stability of the position of the electric heating tape 1 is improved. Two pressure rods 7 are arranged on the outer side of the hoop 2. A bolt rod 8 is installed between the pressure rod 7 and the hoop 2. A limit block 9 matched with the pressure rod 7 is welded on the outer side of the hoop 2. The limit block 9 is set to limit the movement of the pressure rod 7 to avoid the shaking of the pressure rod 7 during movement. A threaded groove 10 matched with the bolt rod 8 is opened on the surface of the hoop 2. A pressure block groove 11 is opened on the inner wall of the groove 5. A pressure block 12 is arranged in the inner cavity of the pressure block groove 11. A connecting rod 13 is fixedly connected between the pressure block 12 and the pressure rod 7. The interior of the temperature control device 4 is equipped with a surface sensing and environment sensing electronic temperature controller. The temperature control device 4 is electrically connected to the electric heating tape 1 through a wire.

[0027] Embodiment 2:

[0028] Figure 1-5 A heating device for a natural gas system according to an embodiment of the utility model is shown, which includes an electric heating belt 1: a hoop 2 is sleeved on the outer side of the electric heating belt 1, a gas pipe 3 is arranged in the inner cavity of the hoop 2, a temperature control device 4 is fixedly connected to the surface of the gas pipe 3, a belt groove 5 adapted to the electric heating belt 1 is opened on the inner wall of the hoop 2, two pressure rods 7 are arranged on the outer side of the hoop 2, a bolt rod 8 is installed between the pressure rod 7 and the hoop 2, a threaded groove 10 adapted to the bolt rod 8 is opened on the surface of the hoop 2, a pressure block groove 11 is opened on the inner wall of the belt groove 5, a pressure block 12 is arranged in the inner cavity of the pressure block groove 11, a connecting rod 13 is fixedly connected between the pressure block 12 and the pressure rod 7, and the outer side of the hoop 2 A through hole matched with the connecting rod 13 is opened, and a spacer 14 is adhered to the surface of the pressing block 12, and the spacer 14 is a rubber pad. Through the setting of the spacer 14, the pressing block 12 and the electric heating belt 1 are isolated and protected, so as to avoid the situation that the pressing block 12 is directly squeezed with the electric heating belt 1 and the surface of the latter is damaged. The electric heating belt 1 includes two nickel-plated copper wires 101, and the outer sides of the two nickel-plated copper wires 101 are jointly provided with a conductive core 102, and the outer side of the conductive core 102 is provided with a modified polyolefin insulation layer 103, and the outer side of the modified polyolefin insulation layer 103 is wrapped with a nickel-tin-copper braided layer 104, and the outer side of the nickel-tin-copper braided layer 104 is wrapped with an outer sheath 105.

[0029] Working principle: When the utility model is used, the user pre-fixes the electric heating belt 1 on the surface of the gas pipe 3 through the belt groove 5 on the surface of the hoop 2, and then straightens the electric heating belt 1 and makes it close to the gas pipe 3. At this time, the electric heating belt 1 moves to a straight state in the inner cavity of the belt groove 5, and then rotates the bolt rod 8 to move on the inner wall of the thread groove 10 and pushes the pressure rod 7, and then the pressure rod 7 drives the electric heating belt 1 to move to close to the gas pipe 3 through the connecting rod 13 and the pressure block 12, so that the heating belt can be pre-fixed on the surface of the pipeline;

[0030] The working method of the electric heating belt 1 and the temperature control device 4 is as follows:

[0031] Innovative conductive polymer technology is used in the conductive core 102. The heating part is composed of a mixture of polymer and conductive carbon black. The conductive path generated by this special mixed material can allow current to flow between parallel busbars on the entire electric heating cable 1. The number of conductive paths between busbars in each heating cable will change with the change of temperature. If the ambient temperature around the electric heating cable 1 drops, the conductive core 102 will shrink slightly. The shrinkage will reduce the resistance and increase the number of conductive paths between the busbars. The current will pass through the increased conductive paths to heat the core or fiber. As the temperature around the heating cable rises, the core or fiber will expand slightly. The expansion will increase the resistance and reduce the number of conductive paths. Therefore, the heating cable will automatically reduce the power output.

[0032] The surface sensing and environment sensing electronic temperature controller installed inside the temperature control device 4 can provide accurate temperature control for the electric heating belt 1, and the accurate temperature setting can be performed through the digital knob switch inside the box.

[0033] The heating tape is pre-fixed on the pipe surface, then straightened and an inward extrusion force is applied to it, thereby ensuring the fit between the heating tape and the pipe, thereby adjusting the tightness of the fit between the heating tape and the pipe.

[0034] In summary: the heating device for the natural gas system pre-fixes the electric heating tape 1 on the surface of the gas pipe 3 through the groove 5 on the surface of the hoop 2, and then straightens the electric heating tape 1 and makes it close to the gas pipe 3, and then drives the pressure rod 7 through the movement of the bolt rod 8 on the inner wall of the threaded groove 10, and then the pressure rod 7 drives the electric heating tape 1 to move close to the gas pipe 3 through the connecting rod 13 and the pressure block 12, so that the heating tape is pre-fixed on the pipeline surface, and then it is straightened and then an inward extrusion force is applied to it, thereby ensuring the fit between the heating tape and the pipeline, thereby achieving the purpose of adjusting the fit tightness between the heating tape and the pipeline.

Claims

1. A heating device for a natural gas system, characterized in that: The invention comprises an electric heating belt (1): a hoop (2) is sleeved on the outer side of the electric heating belt (1), an inner cavity of the hoop (2) is provided with a gas pipe (3), a temperature control device (4) is fixedly connected to the surface of the gas pipe (3), a belt groove (5) matching the electric heating belt (1) is provided on the inner wall of the hoop (2), two pressure rods (7) are provided on the outer side of the hoop (2), a bolt rod (8) is installed between the pressure rod (7) and the hoop (2), a threaded groove (10) matching the bolt rod (8) is provided on the surface of the hoop (2), a pressure block groove (11) is provided on the inner wall of the belt groove (5), a pressure block (12) is provided in the inner cavity of the pressure block groove (11), and a connecting rod (13) is fixedly connected between the pressure block (12) and the pressure rod (7).

2. A heating device for a natural gas system according to claim 1, characterized in that: The hoop ring (2) is composed of two half ring blocks which are rotatably connected via a rotating shaft, and the two half ring blocks are fixed by bolts.

3. A heating device for a natural gas system according to claim 2, characterized in that: Two rubber protrusions (6) are fixedly connected to the inner wall of the belt groove (5), and the surfaces of the rubber protrusions (6) are in contact with the electric heating belt (1).

4. A heating device for a natural gas system according to claim 3, characterized in that: A limiting block (9) adapted to the pressure rod (7) is welded to the outer side of the hoop (2).

5. A heating device for a natural gas system according to claim 4, characterized in that: The outer side of the hoop ring (2) is provided with a through hole matched with the connecting rod (13), and the surface of the pressing block (12) is adhered with a spacer (14), and the spacer (14) is a rubber spacer.

6. A heating device for a natural gas system according to claim 5, characterized in that: The electric heating tape (1) comprises two nickel-plated copper conductors (101), a conductive core (102) is commonly arranged on the outside of the two nickel-plated copper conductors (101), a modified polyolefin insulation layer (103) is arranged on the outside of the conductive core (102), a nickel-tin-copper braided layer (104) is wrapped on the outside of the modified polyolefin insulation layer (103), and an outer sheath (105) is wrapped on the outside of the nickel-tin-copper braided layer (104).

7. A heating device for a natural gas system according to claim 6, characterized in that: The temperature control device (4) is internally equipped with a surface sensing and environment sensing electronic temperature controller, and the temperature control device (4) is electrically connected to the electric heating belt (1) via a wire.

Images