CN213704578U - Thermal shrinking machine for anti-corrosion sleeve - Google Patents
Thermal shrinking machine for anti-corrosion sleeve Download PDFInfo
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- CN213704578U CN213704578U CN202021757534.6U CN202021757534U CN213704578U CN 213704578 U CN213704578 U CN 213704578U CN 202021757534 U CN202021757534 U CN 202021757534U CN 213704578 U CN213704578 U CN 213704578U
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Abstract
The utility model belongs to the technical field of corrosion prevention of gas pipelines, and discloses an anticorrosive casing pipe thermal shrinking machine, which comprises a base, a fixed frame, a movable frame driving mechanism and an electric cabinet, wherein the fixed frame, the movable frame and the electric cabinet are arranged on the base; a plurality of electric heating barrels are arranged in the movable rack, the centers of the heating barrels are pipe fitting heating channels which are communicated linearly, and a plurality of pipe fitting supporting rods which correspond to the heating barrels one to one are arranged on the fixed rack. The utility model discloses reach following effect: by adjusting the temperature of the heater and the moving speed of the moving rack, accurate heating temperature and time can be realized, the temperature is right, a cylindrical structure is adopted, the heating is uniform, and the surface quality of the processed pipe fitting is good; and a plurality of pipe fittings are processed simultaneously, so that the efficiency is improved, the processing cost is greatly reduced, open fire operation is avoided, and the production safety is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of the anticorrosion of gas pipeline, a anticorrosive processing technique of steel-plastic switching tube is related to, especially relate to the anticorrosive processing equipment who is applicable to the anticorrosive technique of pyrocondensation processing formula 3 PE.
Background
The urban natural gas pipe network consists of two pipelines, namely an underground pipeline and an above-ground pipeline, wherein the underground environment corrodes the steel pipes, so that the underground pipeline is mostly paved by adopting plastic pipes with good corrosion resistance, and the above-ground pipeline is paved by adopting the steel pipes in consideration of the fact that the plastic pipes are exposed in the air and are easy to age. The underground plastic pipe and the ground steel pipe are in conversion connection through a section of steel-plastic conversion pipe, and the steel-plastic conversion pipe is formed by coaxially connecting a section of plastic pipe and a section of steel pipe. Most of the steel-plastic conversion pipes in the whole pipe network need to be buried underground, so the steel pipe sections need to be subjected to corrosion prevention treatment.
The 3PE corrosion prevention of the steel-plastic conversion pipe mainly adopts a heat shrinkage process, a heat shrinkage sleeve is a sleeve prepared in advance, the outer layer of the heat shrinkage sleeve is radiation cross-linked polyethylene, and the inner layer of the heat shrinkage sleeve is a hot-melt polyethylene adhesive. During processing, firstly, an epoxy powder anticorrosive layer is coated on the surface of the steel pipe, then a prefabricated heat-shrinkable sleeve is sleeved on the steel pipe, the steel-plastic connecting node is sleeved with a metal hoop, the metal hoop is sleeved by the heat-shrinkable sleeve, and finally the heat-shrinkable sleeve is heated to shrink and adhere to the pipe fitting through a heated and melted adhesive.
At present, the heating mode of the anticorrosion heat shrinkable sleeve actually adopted by a factory is mainly baking by artificial fire, and the main defects are that 1, the heating is uneven, so that the bonding strength of different parts between the sleeve and the steel pipe is seriously uneven, the surface is uneven, and the appearance is ugly; 2. the air bag is easily formed inside; 3. the temperature is difficult to control, and if the sleeve is easily burnt carelessly, the requirement on the proficiency of workers is high; 4. safety accidents and burns easily occur under open fire operation, and great hidden dangers exist.
Although various other heating methods are disclosed in the patent literature, for example, the electromagnetic heating method disclosed in the utility model patent publication nos. CN210211368U and CN206879132U, and the infrared heating method disclosed in the utility model patent application publication No. CN109357101A, have not been practically used. The practice shows that the heating time of the electromagnetic heating mode or the infrared heating mode is far longer than that of the fire baking heating mode. Although the one-off processing of a plurality of pipe fittings can be realized through mechanical equipment, the overall efficiency is still far lower than that achieved by manual roasting heating.
Disclosure of Invention
The utility model discloses the technical problem who solves: the traditional steel-plastic conversion pipe is subjected to anti-corrosion processing under manual operation, so that the sleeve is easily burnt, the rejection rate is high, the bonding strength between the sleeve and the steel pipe is uneven, and the surface quality is poor; the processing cost is high, the single operation is realized, the efficiency is low, and the method is not suitable for large-scale industrial production; the traditional manual fire-baking operation is easy to cause safety accidents and burn, so that great potential safety hazards exist; the equipment solutions disclosed in the literature have a too low processing efficiency.
The utility model discloses the technical scheme who adopts: the utility model provides an anticorrosive sleeve pipe heat shrink machine, includes the base to and set up fixed frame, removal frame actuating mechanism on the base, and the electric cabinet, the one end at the equipment base is fixed to the fixed frame, and the removal frame passes through slide rail mechanism to be installed on the base, remove frame actuating mechanism and include through the bearing install the lead screw on the base, with fixed set up the screw sleeve in the removal frame of lead screw complex, drive lead screw rotatory motor. A plurality of electric heating barrels are arranged in the movable rack, the centers of the heating barrels are pipe fitting heating channels which are linearly communicated, and a plurality of pipe fitting supporting rods which correspond to the heating barrels one to one are arranged on the fixed rack.
During equipment uses, install the anticorrosive sheathed tube of PE steel-plastic conversion pipe on the pipe fitting bracing piece of suit, heating device carries out the heating from one end to the other end along with the anticorrosive sheathed tube of removal PE of removing the frame, and this kind of heating mode is favorable to anticorrosive sleeve and steel-plastic conversion pipe between the discharge of residual air, reduces the production of workpiece surface gas package.
As an improvement, the external power supply of each heating cylinder is respectively provided with a control switch, and the power-on and power-off conditions of a certain electric heating cylinder can be independently controlled. When the number of the pipe fittings processed at one time is less than that of the electric heating barrels, and the individual electric heating barrels are idle, the power supply of the idle electric heating barrels can be turned off, and electric energy waste is avoided.
As an improvement, the pipe supporting rod consists of a large-diameter rod section and a small-diameter rod section. The large-diameter rod section is connected with the fixed frame, and the small-diameter rod section is connected to the tail end of the large-diameter rod section; the diameter of the large-diameter rod section is larger than the outer diameter of the anti-corrosion sleeve, and the diameter of the small-diameter station rod section is smaller than the inner diameter of the steel-plastic conversion pipe. The sleeving position of the steel-plastic conversion pipe sleeved with the PE anti-corrosion sleeve on the pipe supporting rod is limited by the step between the small-diameter rod section and the large-diameter rod section, so that the operation requirement and the workload of operators are reduced, and the processing efficiency is improved.
Preferably, the two ends of the pipe heating channel are provided with cover plates, and the hole diameters of the cover plates are smaller than the diameter of the pipe heating channel and larger than the outer diameter of a processing workpiece sleeved with an anti-corrosion sleeve. The cover plate is beneficial to reducing the leakage of hot air, improving the heat utilization rate and reducing the ambient temperature.
Alternatively, the electrical heating cartridge is an electrothermal heating cartridge in which heating wires or PEC heating elements are arranged. Compared with the common electric heating wire, the PTC element has the characteristics of automatic power regulation, self-limiting temperature and the like.
As an improvement, the four sides and the top surface of the movable frame are provided with heat insulation clapboards for preventing the heat of the electric heating type heating cylinder from being more dissipated to the outside air, so that on one hand, the heat utilization rate is improved, the energy is saved, on the other hand, the relatively low temperature of a workshop is favorably kept, and the working environment of workers is improved.
Alternatively, the electric heating cylinder is an electromagnetic heating cylinder, an electromagnetic coil and a metal heating cylinder arranged in the magnetic field range of the electromagnetic coil are arranged in the electric heating cylinder, and the metal heating cylinder is made of a magnetic conduction material.
Preferably, the electromagnetic heating cylinder is provided with a middle layer heat insulation layer between the electromagnetic coil and the metal heating cylinder. The heat dissipation of the metal heating cylinder barrel is reduced, the heat dissipation of the electromagnetic coil is not influenced, the heat utilization rate is improved, and the loss of the coil is reduced.
As the improvement, the four sides and the top surface of the movable rack are provided with the protective screen plates, so that when workers are prevented from touching the electromagnetic heating device to scald, the heat dissipation of the outer-layer electromagnetic coil of the electromagnetic heating device is facilitated, and the electromagnetic coil is prevented from being burnt due to overheating.
The utility model discloses technical scheme has following beneficial effect: the heating temperature of the heater and the moving speed of the moving rack are adjusted through experiments, accurate heating temperature and heating time can be achieved, the heating temperature of the anti-corrosion sleeve is ensured to be proper, meanwhile, a cylindrical heating structure is adopted, the anti-corrosion sleeve is heated from the 360-degree circumferential direction, the heating uniformity and the 360-degree shrinkage synchronism are ensured, and the surface quality of the machined pipe fitting is good; the electric heating cylinders arranged in groups can process a plurality of pipe fittings at one time, so that the processing efficiency is improved exponentially; the equipment replaces manual processing of workers, so that the processing cost of the anticorrosion processing of the steel-plastic conversion pipe can be greatly reduced; the open fire operation is avoided, the improvement of the automation degree reduces the direct contact between workers and the processed pipe fittings, the potential safety hazard which can appear in the operation is reduced, and the production safety is greatly improved.
Drawings
Fig. 1 is a schematic view 1 of the overall structure of the corrosion-resistant sleeve heat shrinking machine of the present invention.
Fig. 2 is the overall structure schematic diagram 2 of the corrosion-resistant sleeve heat shrinking machine of the present invention.
Fig. 3 is an overall appearance view of the heating cylinder of the present invention.
Fig. 4 is a schematic axial sectional view of the heating cylinder according to the present invention.
Fig. 5 is a schematic diagram of the relative position movement between the pipe support rod and the heating cylinder in the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, in which the heating cylinder is an electromagnetic heating type. It should be noted that the following examples are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1 and 2, the pipe corrosion prevention sleeve heat shrinking machine of the present embodiment includes a base portion, a fixed frame portion, a movable frame driving portion, and an auxiliary portion.
The base part comprises a base 1 and a base 2, the base 1 is connected with the base 2, and two sides above the base 2 are provided with slide rails 3 in parallel; the fixed rack part comprises a fixed rack 4 and pipe support rods 5, the fixed rack 4 is arranged above the base 1, the pipe support rods 5 are arranged on the front surface of the fixed rack 4, the pipe support rods 5 are arranged in 2 rows, and 4 pipe support rods are arranged in a rectangular shape; the moving rack part comprises a moving rack 6, a heating cylinder barrel 7 and a protective screen plate 8, the moving rack 6 is placed on the slideway 3, the protective screen plate 8 is arranged on the four sides and the top surface of the moving rack 6, the heating cylinder barrel 7 is in a sleeve shape and is arranged on the moving rack 6, the heating cylinder barrel 7 is provided with an upper row and a lower row, 4 heating cylinders are arranged in each row, and the heating cylinder barrels are arranged in a rectangle; the driving part of the movable rack comprises a servo motor 9 and a screw rod device 10, the screw rod device 10 comprises a screw rod which is arranged on a base through a bearing, a screw sleeve which is matched with the screw rod and fixedly arranged on the movable rack is arranged along the direction of the longitudinal central line of the rack 2, and the servo motor 9 drives the screw rod to rotate; the auxiliary part comprises a servo high-pressure fan 11, an air pipe branch air pipe 12, a main air pipe 13 and crawler-type wire boxes 14, wherein the servo high-pressure fan 11 is installed on one side of the fixed rack 4, the branch air pipe 12 is installed on one side of the movable rack 6 and on the same side as the servo high-pressure fan 11, the servo high-pressure fan 11 is connected with the branch air pipe 12 through the main air pipe 13, the branch air pipes 12 are totally 8 and are respectively connected with 8 heating cylinder barrels 7, and the crawler-type wire boxes 14 are on the same side as the branch air pipe 12 and are connected with the heating cylinder.
In this embodiment, the heating cylinder 7 is electromagnetically heated. Referring to fig. 3, the heating cylinder 7 is in a cylinder shape, and an electromagnetic coil and a metal heating tube disposed in a magnetic field range of the electromagnetic coil are disposed in the cylinder, and the metal heating tube is made of a magnetic conductive material. Referring to fig. 4, the outermost layer of the heating cylinder is an outer-layer electromagnetic coil 15, the innermost layer is a metal heating cylinder composed of an iron cylinder 17 and a copper cylinder 18, and a middle-layer heat insulation layer 16 is arranged between the outer-layer electromagnetic coil 15 and the metal heating cylinder, so that the heat dissipation of the metal heating cylinder is reduced, the heat dissipation of the electromagnetic coil is not influenced, the heat utilization rate is improved, and the loss of the coil is reduced. Referring to fig. 3, the heating cylinder 7 is covered with cover plates 19 at both ends to reduce the outflow of hot air.
The pipe support rods 5 correspond to the heating cylinder barrels 7 one by one, and the circle centers of the cross sections of each group of pipe support rods 5 and the cross sections of the corresponding heating cylinder barrels 7 are located on the same horizontal axis.
The pipe supporting rod 5 is divided into two parts, and consists of a large-diameter rod section and a small-diameter rod section. The large-diameter rod section is connected with the fixed frame 4, and the small-diameter rod section is connected to the tail end of the large-diameter rod section; the diameter of the large-diameter rod section is larger than the outer diameter of the anti-corrosion sleeve, and the diameter of the small-diameter station rod section is smaller than the inner diameter of the steel-plastic conversion pipe. The sleeving position of the steel-plastic conversion pipe sleeved with the PE anti-corrosion sleeve on the pipe support rod 5 is limited by the step between the small-diameter rod section and the large-diameter rod section.
The working principle is as follows:
a worker fixedly sleeves the steel-plastic composite pipe workpiece sleeved with the anti-corrosion sleeve on the pipe support rod 5, the servo high-pressure fan 11 is opened, and air with pressure generated by the servo high-pressure fan 11 enters air heating channels in the heating cylinder barrels 7 through the main air pipe 13 and the branch air pipes 12 respectively; the electromagnetic heating switch is turned on, the heating cylinder barrel 7 generates heat to heat the air introduced into the heating cylinder barrel, and the cover plates 19 at the two ends of the heating cylinder barrel 7 can reduce the overflow of hot air; the servo motor 9 is started, the screw rod 10 rotates to drive the movable rack 6 to move and move towards the fixed rack 4, the steel-plastic conversion pipe workpiece sleeved with the anticorrosion sleeve on the pipe supporting rod 5 penetrates through a pipe heating channel inside the heating cylinder 7 and is heated by hot air therein, a glue layer in the anticorrosion sleeve is heated and then melted, and the anticorrosion sleeve shrinks and is tightly and uniformly attached to the steel-plastic conversion pipe under the condition that certain pressure is applied to high-pressure hot air in the channel of the heating cylinder 7.
Referring to fig. 5, the heating cylinder 7 is moved from the position a shown in fig. 5 to the position B shown in fig. 5 so that all parts of the workpiece can completely enter from one end of the heating cylinder 7 and exit from the other end, thereby being heated for the same time; heating the anti-corrosion sleeve from one end and moving the anti-corrosion sleeve to the other end so as to extrude out residual air between the anti-corrosion sleeve and the steel-plastic conversion pipe; then, the servo motor 9 rotates reversely, and the screw rod 10 drives the movable rack 6 to move reversely and is far away from the fixed rack 4. The moving frame 6 moves back and forth repeatedly within a set time, and drives the heating cylinder 7 to heat the pipe fitting. The anticorrosive sleeve pipe cladding is on steel is moulded the switching tube, and steel is moulded the anticorrosive processing of switching tube and is accomplished, and the staff takes off it.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these should be considered as the protection scope of the present invention.
Claims (9)
1. An anti-corrosion sleeve heat shrinking machine comprises a base, a fixed rack, a movable rack driving mechanism and an electric cabinet, wherein the fixed rack, the movable rack and the electric cabinet are arranged on the base; a plurality of electric heating barrels are arranged in the movable rack, the centers of the heating barrels are pipe fitting heating channels which are linearly communicated, and a plurality of pipe fitting supporting rods which correspond to the heating barrels one to one are arranged on the fixed rack.
2. The anti-corrosion casing pipe heat shrinking machine according to claim 1, wherein the external power supply of each heating cylinder is respectively provided with a control switch, and the power-on and power-off conditions of a certain electric heating cylinder can be independently controlled.
3. The corrosion-resistant casing heat shrink machine of claim 1 wherein the pipe support bar is comprised of a large diameter bar section and a small diameter bar section; the large-diameter rod section is connected with the fixed frame, and the small-diameter rod section is connected to the tail end of the large-diameter rod section; the diameter of the large-diameter rod section is larger than the outer diameter of the thermal shrinkage protective pipe, and the diameter of the small-diameter station rod section is smaller than the inner diameter of the steel-plastic conversion pipe.
4. The anti-corrosion sleeve heat shrinking machine according to claim 1, wherein cover plates are arranged at two ends of the pipe fitting heating channel, and the hole diameter of each cover plate is smaller than that of the pipe fitting heating channel and larger than the outer diameter of a processing workpiece sleeved with a heat-shrinkable protective pipe.
5. The corrosion-resistant casing heat-shrinking machine of claim 1, wherein the electric heating cylinder is an electrothermal heating cylinder in which heating wires or PEC heating elements are arranged.
6. The anticorrosive casing heat-shrinking machine of claim 5, characterized in that the four sides and the top surface of the moving rack are provided with heat-insulating partition boards.
7. The corrosion-resistant sleeve heat shrinking machine according to claim 1, wherein the electric heating cylinder is an electromagnetic heating cylinder, an electromagnetic coil and a metal heating cylinder arranged in a magnetic field range of the electromagnetic coil are arranged in the electric heating cylinder, and the metal heating cylinder is made of a magnetic conductive material.
8. The corrosion-resistant sleeve heat-shrinkable machine of claim 7, wherein an intermediate heat-insulating layer is arranged between the electromagnetic coil and the metal heating cylinder of the electromagnetic heating cylinder.
9. The anti-corrosion casing heat shrinking machine according to claim 8, wherein the four sides and the top surface of the moving frame are provided with protective mesh plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021757534.6U CN213704578U (en) | 2020-08-21 | 2020-08-21 | Thermal shrinking machine for anti-corrosion sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021757534.6U CN213704578U (en) | 2020-08-21 | 2020-08-21 | Thermal shrinking machine for anti-corrosion sleeve |
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| CN213704578U true CN213704578U (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021757534.6U Active CN213704578U (en) | 2020-08-21 | 2020-08-21 | Thermal shrinking machine for anti-corrosion sleeve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787726A (en) * | 2021-11-18 | 2021-12-14 | 沈阳新智源医疗用品有限公司 | Conduit heat-sealing machine |
| CN114161719A (en) * | 2021-12-09 | 2022-03-11 | 武汉锐科光纤激光技术股份有限公司 | Casing manufacturing and processing device and method |
| CN117400542A (en) * | 2023-12-14 | 2024-01-16 | 宝成重工有限公司 | Automatic casing equipment, plastic-lined composite pipe fitting and casing process |
-
2020
- 2020-08-21 CN CN202021757534.6U patent/CN213704578U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787726A (en) * | 2021-11-18 | 2021-12-14 | 沈阳新智源医疗用品有限公司 | Conduit heat-sealing machine |
| CN114161719A (en) * | 2021-12-09 | 2022-03-11 | 武汉锐科光纤激光技术股份有限公司 | Casing manufacturing and processing device and method |
| CN114161719B (en) * | 2021-12-09 | 2023-11-24 | 武汉锐科光纤激光技术股份有限公司 | Casing pipe manufacturing device and method |
| CN117400542A (en) * | 2023-12-14 | 2024-01-16 | 宝成重工有限公司 | Automatic casing equipment, plastic-lined composite pipe fitting and casing process |
| CN117400542B (en) * | 2023-12-14 | 2024-04-16 | 宝成重工有限公司 | Automatic casing equipment, plastic-lined composite pipe fitting and casing process |
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