Solid bitumen application device

Abstract

The application discloses a solid asphalt smearing device, which comprises an asphalt adding area and a melting pool which are communicated with each other, heating pipes and thermocouples are installed in the asphalt adding area and the melting pool, the heating pipes and the thermocouples are connected with a control cabinet, the control cabinet controls the working or not of the heating pipes according to the feedback of the thermocouples, an arc-shaped soaking pool, a first supporting frame, a second supporting frame and a third supporting frame are installed on the melting pool in sequence, polyurethane scrapers, rubber strips and rubber scrapers which scrape asphalt step by step are respectively installed on the first supporting frame, the second supporting frame and the third supporting frame, the arc-shaped soaking pool has an arc-shaped groove for soaking cables, an asphalt pump is also installed on the melting pool, a feeding pipe of the asphalt pump is inserted into the melting pool, and a discharging pipe of the asphalt pump is opposite to the top of the arc-shaped soaking pool.

Description

TECHNICAL FIELD

[0001] The present application relates to the high voltage sheath process in high voltage cable, and particularly to the fixed asphalt coating device. BACKGROUND

[0002] At present, the high voltage cross-linked polyethylene insulation power cable is used for AC system power transmission and distribution, and the metal sheath layer usually adopts corrugated aluminum sheath. Therefore, in order to better adhere the outer sheath to the aluminum sheath and prevent relative sliding, the asphalt must be coated on the surface of the aluminum sheath.

[0003] The prior art is to directly coat liquid asphalt on the surface of the aluminum sheath. The asphalt filling is not full, and the phenomenon of incomplete filling and virtual filling is easy to occur, which cannot guarantee the good adhesion of the outer sheath to the aluminum sheath. In order to better meet the special requirements of the asphalt coating on the outside of the corrugated aluminum sheath, the inventor designs a solid asphalt coating device, and thus the present application is generated. SUMMARY

[0004] The purpose of the present application is to provide a solid asphalt coating device, which can increase the amount of asphalt, fill full, easily adjust the temperature control, and guarantee the uniform and reliable coating thickness on the surface of the aluminum sheath.

[0005] In order to achieve the above purpose, the solution of the present application is as follows:

[0006] The solid asphalt coating device comprises an asphalt adding area and a melting pool which are in communication with each other. Heating pipes and thermocouples are installed in the asphalt adding area and the melting pool. The heating pipes and the thermocouples are connected with a control cabinet. The control cabinet controls whether the heating pipes work or not according to the feedback of the thermocouples. An arc-shaped soaking pool, a first support frame, a second support frame and a third support frame are sequentially installed on the melting pool. Polyurethane scrapers, rubber strips and rubber scrapers which scrape asphalt step by step are respectively installed on the first support frame, the second support frame and the third support frame. The arc-shaped soaking pool has an arc-shaped groove for cable soaking. An asphalt pump is also installed on the melting pool. The inlet pipe of the asphalt pump is inserted into the melting pool, and the outlet pipe of the asphalt pump is opposite to the top of the arc-shaped soaking pool.

[0007] The polyurethane scraper has a first scraping hole for the cable to pass through. The rubber strip has a second scraping hole for the cable to pass through. The rubber scraper has a third scraping hole for the cable to pass through.

[0008] The asphalt adding area and the melting pool are arranged together on a support. A protective plate and an asbestos heat preservation layer are installed around the asphalt adding area and the melting pool on the support. The asbestos heat preservation layer is inside, and the protective plate is outside.

[0009] The asphalt adding area and the melting pool are installed with a plurality of heating pipes at the bottom.

[0010] A plurality of thermocouples are installed in the asphalt adding area and the melting pool.

[0011] After the above scheme, the structural design performance of the present application is stable, convenient to use, and has good safety performance and mechanical performance. Compared with the liquid asphalt coating device, the present application has large asphalt addition amount, full filling, simple and adjustable temperature control, multi-layer scraping of polyurethane scraper, rubber strip and rubber scraper, which ensures the uniformity, uniformity and reliability of the asphalt coating thickness on the surface of the aluminum sheath, smooth and bright, and avoids the phenomenon of missing filling and virtual filling, improves the quality of high-voltage cable products, and improves the first-time pass rate of high-voltage cable, which has a great auxiliary effect on products that need to be coated with asphalt.

[0012] The present application will be further described below in conjunction with the drawings and implementation cases. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the examples of the present application, the following will make a simple description of the drawings needed to be used in the embodiment description. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0014] Figure 1 is a perspective view of the present application;

[0015] Figure 2 is a front view of the present application;

[0016] Figure 3 is a side view of the present application;

[0017] Figure 4 is a top view of the present application;

[0018] Figure 5 is a rubber strip use state diagram.

[0019] Label explanation:

[0020] Asphalt adding area 1, melting pool 2, support 3, guard plate 4, asbestos heat preservation layer 5, heating pipe 6, thermocouple 7, control cabinet 8, arc-shaped soaking pool 9, first support frame 10, second support frame 11, third support frame 12, polyurethane scraper 13, rubber strip 14, rubber scraper 15, asphalt pump 16, discharge pipe 17. DETAILED DESCRIPTION

[0021] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0022] It should be noted that the terms up, down, left, right, inner, outer, first, second, and the like are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the technical features indicated, unless otherwise explicitly and specifically limited.

[0023] Referring to Figures 1 to 5 As shown in the drawings, the solid asphalt coating device disclosed by the present application comprises an asphalt adding area 1 and a melting pool 2 in communication with each other, the asphalt adding area 1 and the melting pool 2 are arranged together on a support 3, and the support 3 serves to support the whole device. A protective plate 4 and an asbestos heat preservation layer 5 are installed around the asphalt adding area 1 and the melting pool 2 on the support 3, the asbestos heat preservation layer 5 serves to preserve heat on the inside, to ensure the temperature in the melting pool 2, to ensure that the asphalt will not solidify after melting due to cold, and the protective plate 4 serves to protect on the outside, to ensure that the asbestos heat preservation layer 5 will not fall off, and to ensure the appearance.

[0024] A heating pipe 6 and a thermocouple 7 are installed in the asphalt adding area 1 and the melting pool 2. As shown in the drawings, a plurality of heating pipes 6 are installed at the bottom of the asphalt adding area 1 and the melting pool 2. A plurality of thermocouples 7 are installed at the four corners and the middle of the asphalt adding area 1 and the melting pool 2. The heating pipe 6 and the thermocouple 7 are connected with a control cabinet 8. The heating pipe 6 is used to heat the solid asphalt, so that it is melted by heat, for subsequent coating. The thermocouple 7 is used to monitor the temperature of the asphalt adding area 1 and the melting pool 2 in real time, and to feed back the measured temperature to the control cabinet 8 in time, and the control cabinet 8 controls whether the heating pipe 6 works or not according to the feedback of the thermocouple 7.

[0025] An arc-shaped soaking pool 9, a first support frame 10, a second support frame 11 and a third support frame 12 are installed in sequence on the melting pool 2. The arc-shaped soaking pool 9 has an arc-shaped groove for cable soaking. Polyurethane scrapers 13, rubber strips 14 and rubber scrapers 15 for scraping asphalt step by step are installed on the first support frame 10, the second support frame 11 and the third support frame 12 respectively. Specifically, the polyurethane scraper 13 has a first scraping hole for the cable to pass through, the middle of the rubber strip 14 can be wrapped into a second scraping hole for the cable to pass through (see Figure 5), the rubber scraper 15 has a third scraping hole for the cable to pass through. The cable to be coated with asphalt first passes through the arc-shaped groove, then passes through the first scraping hole, the second scraping hole and the third scraping hole one by one.

[0026] The asphalt pump 16 is also installed on the melting pool 2, and is used to extract the melted thick asphalt. The inlet pipe of the asphalt pump 16 (not marked in the figure) is inserted into the melting pool 2, and the outlet pipe 17 of the asphalt pump 16 is opposite to the upper part of the arc-shaped soaking pool 9. The asphalt in the melting pool 2 is sucked up by the asphalt pump 16 and then sprayed on the cable passing through the arc-shaped groove.

[0027] Before starting the operation of the device, the solid asphalt is added from the asphalt adding area 1, and the space is large and easy to put. After starting the operation, the control cabinet 8 controls the heating temperature to melt the asphalt, and the melting pool 13 provides sufficient thick molten asphalt for production to ensure the production. During the operation, the cable to be coated with asphalt first passes through the arc-shaped groove of the arc-shaped soaking pool 9. The asphalt pump 16 sucks up the thick molten asphalt in the melting pool 2 and sprays it on the cable passing through the arc-shaped groove to provide sufficient asphalt to cover the surface of the cable and ensure that the surface of the cable is soaked in place to avoid uneven melting during half-way feeding. Then, the cable coated with sufficient asphalt passes through the first scraping hole of the polyurethane scraper 13. Because the polyurethane scraper 13 is relatively hard, the surface of the cable can be roughly scraped to remove excess asphalt. Then, the cable passes through the second scraping hole surrounded by the rubber strip 14 to finely scrape the surface of the cable. Finally, the cable passes through the third scraping hole of the rubber scraper 15. Because the rubber scraper 15 has good elasticity, the cable will drive the rubber scraper 15 to move forward during the forward movement. The third scraping hole is driven to be sleeved on the forward-moving cable to scrape and press the asphalt on the surface of the cable, which can squeeze out possible air bubbles and avoid the phenomena of leakage and virtual filling to ensure that the thickness of the asphalt on the surface of the aluminum sheath is uniform and smooth and bright.

[0028] The key technology of the device is that a layer of asphalt is coated on the surface of the corrugated aluminum sheath during the production of the outer sheath layer of the high-voltage cable to ensure that the outer sheath layer and the aluminum sheath are better attached and do not slide relative to each other, and the asphalt fills the corrugated grooves to reduce the consumption of the sheath layer material. The solid asphalt coating device described in the present application is based on the original high-voltage cable production equipment and is proposed and modified to improve the saturation and brightness of asphalt coating. In addition to retaining the original production function, the device is additionally provided with a solid asphalt melting pool 2, an asphalt pump 16, an arc-shaped soaking pool 9, a polyurethane scraper 13, a rubber strip 14 and a rubber scraper 15, thereby improving the quality of the sheath layer of the high-voltage cable product and increasing the qualified rate of the product.

[0029] The present application provides sufficient thick molten asphalt to ensure the saturation and brightness of the asphalt on the surface of the aluminum sheath layer, improve the quality of the outer sheath layer product, ensure that the corrugated grooves on the surface of the aluminum sheath layer are filled, reduce the consumption of the outer sheath layer material, and ensure that the thickness of the asphalt coating on the surface of the aluminum sheath layer is uniform, smooth and bright.

[0030] The above merely illustrates the embodiments of the present application, and is not intended to limit the protection scope of the present application. It should be noted that, after reading the specification, any equivalent changes made by those skilled in the art according to the design ideas of the present application shall fall within the protection scope of the present application.

Claims

1. A solid bitumen application device, characterized by: The asphalt adding area and the melting pool are connected with each other, heating pipes and thermocouples are installed in the asphalt adding area and the melting pool, the heating pipes and the thermocouples are connected with a control cabinet, the control cabinet controls the working or not of the heating pipes according to the feedback of the thermocouples, an arc-shaped soaking pool, a first support frame, a second support frame and a third support frame are installed on the melting pool in sequence, polyurethane scrapers, rubber strips and rubber scrapers for scraping asphalt step by step are respectively installed on the first support frame, the second support frame and the third support frame, the arc-shaped soaking pool has an arc-shaped groove for cable soaking, an asphalt pump is also installed on the melting pool, an inlet pipe of the asphalt pump is inserted into the melting pool, and an outlet pipe of the asphalt pump is opposite to the top of the arc-shaped soaking pool; The polyurethane scraper has a first scraping hole for cable passing, the rubber strip has a second scraping hole for cable passing, and the rubber scraper has a third scraping hole for cable passing; The cable passing through the third scraping hole of the rubber scraper drives the rubber scraper to move forward, and the third scraping hole is sleeved on the moving cable.

2. The solid bitumen application apparatus of claim 1, wherein: The asphalt adding area and the melting pool are arranged on a support, and a protective plate and an asbestos heat preservation layer are installed around the asphalt adding area and the melting pool on the support.

3. The solid bitumen applicator of claim 1, wherein: The asphalt adding area and the melting pool are installed with a plurality of heating pipes at the bottom.

4. The solid bitumen applicator of claim 1, wherein: The asphalt adding area and the melting pool are installed with a plurality of thermocouples.

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