Cold winding belt heating device for low temperature environment construction

Abstract

The application discloses a cold winding tape heating device for low-temperature environment construction, which comprises a box capable of sealing and storing cold winding tapes, wherein the inner wall of the box is uniformly provided with heating components and heat preservation materials, the outer wall of the box is provided with temperature control components, and the box is further provided with support components for suspending and placing the cold winding tapes. The heating device ensures that the cold winding tapes have appropriate temperature in outdoor construction and can be taken as needed. The constant-temperature heating box is simple to manufacture, small in box volume, light in weight and high in flexibility, and is suitable for outdoor pipeline joint repairing work. Meanwhile, the number of layers in the box can be adjusted according to the number of the heated and preserved cold winding tapes. The constant-temperature heating box uses electric heating, and compared with traditional spray gun baking heating, the electric heating is safer to human body and environment. Electric heat tracing is used as the heating element, which is uniformly arranged in the heating box, so that the cold winding tapes can be uniformly heated, and meanwhile, a temperature controller and a display are added, so that the constant temperature of the heating box can be maintained. The constant-temperature heating box has good advantages for promoting project quality, progress and other work.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cold wrapping tape used in low temperature environment, and particularly relates to a cold wrapping tape heating device for low temperature environment construction. BACKGROUND

[0002] Cold wrapping tape is widely used in various pipeline corrosion prevention and repair engineering, especially in high-risk fields such as petroleum and natural gas. The cold wrapping tape is generally composed of a base material and an adhesive layer. The base material can be a fiber woven cloth such as polyethylene and polypropylene, and the adhesive layer usually adopts butyl rubber modified asphalt or other adhesive with strong adhesion, which enables the cold wrapping tape to adhere closely to the surface of the pipeline to form an effective corrosion prevention layer.

[0003] When various outdoor buried pipeline joint repairing and repairing work in low temperature (winter) construction is carried out, the cold wrapping tape is stiff, easy to break, poor in flexibility and unable to be constructed due to low environmental temperature, which is specifically embodied in that:

[0004] (1) Material hardening: the low temperature environment in winter brings many inconveniences to the corrosion prevention engineering. The polypropylene fiber corrosion prevention cold wrapping tape will become hard in low temperature, which leads to that the cold wrapping tape and the pipeline are not tightly combined and the adhesion is not firm, resulting in the reduction of construction quality.

[0005] (2) Temperature affects unwinding: the temperature during construction should be higher than the dew point temperature by 3℃ or more. The unwinding temperature of the cold wrapping tape is generally above 5℃, and the best construction temperature is 11-30C°. If the temperature does not meet the requirements, certain heating measures should be taken, such as putting the cold wrapping tape into a warm warehouse or carrying out construction when the environmental temperature is slightly high.

[0006] (3) Safety: the traditional spray gun baking heating of the cold wrapping tape is easy to cause burns to the personnel and pollution to the environment.

[0007] Therefore, the use of cold wrapping tape in low temperature environment is hindered, which affects the construction efficiency and construction progress. SUMMARY

[0008] In view of the above problems, the present application aims to provide a cold wrapping tape heating device for low temperature environment construction, which can ensure that the temperature of the cold wrapping tape is appropriate during outdoor construction and can be taken as needed. Compared with the traditional spray gun baking heating, the safety hazards to the human body and the environment are smaller, and the working efficiency and construction progress in low temperature environment can be effectively improved.

[0009] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: a cold wrapping tape heating device for low temperature environment construction, the heating device comprises a box body capable of enclosing and storing the cold wrapping tape, heating members and heat preservation layers are uniformly arranged on the inner wall of the box body, temperature control members are further arranged on the outer wall of the box body, and support members for suspending and placing the cold wrapping tape are further arranged in the box body.

[0010] Preferably, vertical spacing in the box is provided with a plurality of storage layers separated by the partition of the inner cavity, and the partition is a mesh structure.

[0011] Preferably, the heating member is arranged in each of the storage layers with increasing density from top to bottom.

[0012] Preferably, the support member is a support column provided on the partition and sleeved with a cold wrapping tape, and a support step in partial contact with the cold wrapping tape is horizontally extended at the bottom of the outer wall of the support column.

[0013] Preferably, a spring column separating the upper and lower cold wrapping tapes is circumferentially arranged at the top of the outer wall of the support column.

[0014] The beneficial effects of the present application are that the heating device ensures that the cold wrapping tape has a suitable temperature in outdoor construction and is taken as needed. The constant temperature heating box is simple to make, small in size, light in weight, and high in flexibility, and is suitable for outdoor pipeline joint repair work.

[0015] At the same time, the number of layers inside can be adjusted according to the number of heated and insulated cold wrapping tapes. The constant temperature heating box uses electric heating, which is safer for the human body and the environment than traditional spray gun baking heating. The electric tracing is used as a heating element and is uniformly arranged in the heating box body, which can uniformly heat the cold wrapping tape and increase the temperature controller and display to keep the internal temperature of the heating box constant. It has good advantages for promoting project quality, progress and other work. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the internal structure diagram of the box of the present application.

[0017] Figure 2 is the structure enlarged view of A in the present application Figure 1

[0018] Figure 3 is the cold wrapping tape diagram in the box of the present application.

[0019] Figure 4 is the cold wrapping tape gradually transferring diagram in the box of the present application.

[0020] Figure 5 is the support column structure diagram of the present application.

[0021] Figure 6 is the spring column on the support column of the present application extruded and retracted under external force.

[0022] Figure 7 is the spring column retraction and extrusion diagram when the cold wrapping tape is sleeved on the support column of the present application.

[0023] Figure 8 ​For the present application Figure 7 The cold wrapping tape is in contact with the support step on the basis.

[0024] Figure 9 For the present application, two cold wrapping tape structures are set on a single support column.

[0025] Figure 10 For the current manual roasting of cold wrapping tape by spray gun.

[0026] In the figure: 11-door body; 4-cold wrapping tape; 41-inner cylinder; 5-insulation board layer; 6-iron sheet; 7-electric heat tracing tape. DETAILED DESCRIPTION

[0027] In order to make those skilled in the art better understand the technical scheme of the present application, the technical scheme of the present application will be further described below in combination with the drawings and examples.

[0028] Referring to the drawings Figures 1-9 The heating device for cold wrapping tape used in low-temperature environment construction includes a box body 1 capable of enclosing and storing cold wrapping tape, which is preferably set as a cuboid structure according to the specification of the cold wrapping tape, and is made of 2.5mm thick steel plate with a specification of 600mm high*450mm wide*500mm deep. As shown in Figure 2 The insulation layer is a 20mm thick rock wool insulation board arranged on the inner wall of the box body 1, and a proper amount of insulation nails are welded on the inner wall of the box body 1 for fixing, so as to heat the box body 1 and keep the temperature, avoiding the heat loss due to rapid temperature drop. A layer of 0.1mm thick iron sheet with holes is laid on the inside of the insulation board layer, which is fixed by bending the insulation nails, and the box body 1 is integrally formed.

[0029] The heating member is preferably an electric heat tracing tape, which is punched from the side of the box body 1 and arranged horizontally on each face (except the box door), with a horizontal interval of 85mm, and the electric heat tracing tape is fixed on the inner iron sheet by using a metal binding belt.

[0030] The temperature control member is also arranged on the outer wall of the box body 1, such as the constant temperature controller and display screen installed on the outer side of the box body, and the temperature sensor installed inside the box body, so as to ensure that the heating temperature in the box body 1 is at the optimal use temperature of the cold wrapping tape. The electric heat tracing tape preferably has a power of about 20W per meter, the length used in the box is 25m, the total power is 500W, and 220V alternating current is used, and when used outdoors, a 220V alternating current generator can be directly connected for power supply.

[0031] The inside temperature of the box can be adjusted by using a temperature controller. When the outdoor temperature is -10-0℃, the inside temperature of the box can reach 30℃, which can meet the use; when the outdoor temperature is -20--10℃, the inside temperature of the box can reach 35℃, which can meet the use. The optimal heating time in winter construction is 20-30 minutes, and the cold wrapping tape can be kept at the optimal construction temperature when it is taken out of the heating device and during the construction process.

[0032] Further, a wheel body can be arranged at the bottom of the box 1, which is used for facilitating the transfer of the box according to the progress of the construction. When the box 1 is used, the cold wrapping tape can be placed in the heating box for heating before the construction, so that the cold wrapping tape is kept at the optimal construction temperature, the construction quality of the pipeline corrosion prevention is ensured, and the problems of stiffness, easy folding, easy breaking and poor flexibility of the cold wrapping tape caused by the low environmental temperature are solved.

[0033] During the heating of the cold wrapping tape by the box 1, the cold wrapping tape has certain adhesion, so that the adhesion is further enhanced in the later heating stage. After the cold wrapping tape is placed in the box 1, it is easy to be adhesively bonded with the box 1, so that the operator cannot smoothly take out the cold wrapping tape. Therefore, to solve this problem, a support member for suspending the cold wrapping tape is arranged in the box 1. The cold wrapping tape can be suspended and supported in the box by the support member, so as to prevent the cold wrapping tape from being easily bonded with the box 1 after heating, and also solve the problem of excessive accumulation of adhesive in the box 1 during frequent heating of the cold wrapping tape, which affects the continuous heating of the subsequent cold wrapping tape, and ensure the cleanliness of the box 1.

[0034] Since the cold wrapping tape needs a certain heating time to reach the working temperature in a low-temperature environment, and the cold wrapping tape is usually continuously used in actual construction, in order to ensure that the heated cold wrapping tape can be continuously used during the construction, and to reduce the heating energy consumption of the box 1, as shown in Figure 1 、 3 The box 1 is vertically spaced apart by a partition plate 2, which divides the inner cavity into a plurality of storage layers 1a, and the partition plate 2 is a mesh plate structure. By dividing the inner cavity of the box 1 into layers by the partition plate 2, the cold wrapping tape can be placed in each layer, which avoids the problem that the cold wrapping tape on the top is difficult to separate from the cold wrapping tape on the bottom due to the gravity pressing of the cold wrapping tape on the bottom caused by the direct stacking of the cold wrapping tape from the bottom surface of the box 1. Therefore, as shown in the figure, two layers of cold wrapping tape can be placed on each partition plate 2. The mesh plate structure of the partition plate 2 enables the heat in the box 1 to be evenly distributed, achieving balanced heating effect.

[0035] Since the housing 1 disclosed in this application is used in a low-temperature environment, when the cold-applied tape in the ambient temperature (below 0°C) is placed inside the housing, and the internal temperature of the housing 1 reaches 30-35°C, the temperature difference between the cold-applied tape entering the housing 1 and the outside is too large. Under the influence of this large temperature difference, the quality of the cold-applied tape will be affected. Therefore, to solve this problem, the density of the heating components in each storage layer 1a increases gradually from top to bottom. That is, the heating temperature of the upper storage layer 1a inside the housing 1 is lower than that of the middle storage layer 1a, and the heating temperature of the middle storage layer 1a is lower than that of the bottom storage layer 1a. Since the cold-applied tape is used in single rolls and unwound, and unused tape remains heated inside the housing 1, when in use, the cold-applied tape from the external environment is placed in the uppermost storage layer 1a for preheating. After being heated for a period of time, it is placed in the middle storage layer 1a for further heating, and then placed in the lower storage layer 1a to reach the operating temperature. This effectively avoids the impact on the quality of cold-applied tape caused by the large temperature difference when the external cold-applied tape is placed directly inside the box 1.

[0036] When each storage layer 1a inside the box 1 is equipped with cold-applied tape, such as Figure 4 As indicated by the middle arrow, the cold-applied tape placed in the lower layer is removed first, and then the middle cold-applied tape is added to the lower storage layer 1a. At the same time, the upper cold-applied tape is transferred to the middle storage layer 1a, and the outer cold-applied tape is added to the upper storage layer 1a. This process of transfer and replenishment is repeated, allowing the cold-applied tape to be heated step-by-step from the external environment to the operating temperature. Meanwhile, the middle and upper storage layers 1a are below the maximum heating temperature of the cold-applied tape, thus reducing the energy consumption of the housing 1.

[0037] To address the issue of the cold-applied tape easily adhering to the surface of partition 2 after heating, such as... Figure 5 As shown, the supporting member is a support column 3 mounted on the partition 2 and fitted with cold-applied tape. A support step 31 extends horizontally along the bottom of the outer wall of the support column 3, partially contacting the cold-applied tape. Since the cold-applied tape 4 is usually wound around the inner cylinder 41, after the cold-applied tape is fitted off the support column 3 and lowered, the inner cylinder of the cold-applied tape contacts the support step 31. Figures 8-9 As shown, this process separates the cold-applied tape from the partition surface, and after the cold-applied tape is heated, it is prevented from sticking to the partition surface, making it easier to remove the cold-applied tape smoothly.

[0038] When cold-wrapped tape needs to be stacked in each storage layer 1a, in order to allow the stacked cold-wrapped tapes to separate, as follows: Figures 5-6 As shown, a spring post 32 is circumferentially arranged at the top of the outer wall of the support post 3, separating the upper and lower cold-wrapped strips. The outer end face of the spring post 32 is preferably an arc surface, which allows it to retract into the support post 3 under external force. During operation... Figures 7-9As shown, the cold winding tape is sleeved downward from the top of the support column 3, after the inner cylinder of the cold winding tape contacts the spring column 32, the cold winding tape is continuously pressed downward, the spring column 32 is driven to retract into the support column 3 by the arc outer end face of the spring column 32, the cold winding tape is continuously pressed downward to make the inner cylinder of the cold winding tape contact the support step 31, and the top is separated from the spring column 32, and the spring column 32 is extended outward to reset. Then the cold winding tape is sleeved on the support column 3, the inner cylinder of the cold winding tape contacts the spring column 32, the contact between the upper and lower stacked cold winding tapes is separated, thereby avoiding the problem of easy bonding between the stacked and heated cold winding tapes.

[0039] The principle of the present application is that when the cold winding tape is heated in a low temperature environment, the cold winding tape is first placed in the upper storage layer 1a in the box body 1, when the cold winding tape is stacked in a single storage layer 1a, the spring column 32 is retracted by pressing the cold winding tape downward, and then the cold winding tape at the bottom contacts the support step 31, and the cold winding tape at the top contacts the spring column 32 after being sleeved, thereby achieving the separation of the upper and lower cold winding tapes. When the cold winding tape is taken out for use, the cold winding tape in the lower storage layer 1a is taken out first, then the cold winding tape in the middle storage layer 1a is transferred to the lower storage layer 1a, the cold winding tape in the upper storage layer 1a is transferred to the middle storage layer 1a, and the cold winding tape in the external environment is supplemented to the upper storage layer 1a, thereby realizing the step-by-step heating operation of the cold winding tape.

[0040] The basic principles, main features and advantages of the present application are shown and described above. Various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A heating device for cold-applied tape used in low-temperature construction, characterized in that: The heating device includes a box (1) capable of enclosing and storing cold-applied tape, heating components and insulation layers are evenly distributed on the inner wall of the box (1), a temperature control component is also provided on the outer wall of the box (1), and a support component for suspending and placing the cold-applied tape is also provided inside the box (1).

2. The heating device according to claim 1, characterized in that: The box (1) is vertically spaced with partitions (2) that divide its inner cavity into multiple storage layers (1a), and the partitions (2) are mesh structures.

3. The heating device according to claim 2, characterized in that: The density of the heating components in each storage layer (1a) increases from top to bottom.

4. The heating device according to claim 3, characterized in that: The supporting member is a support column (3) installed on the partition (2) and fitted with cold-applied tape. A support step (31) extends horizontally along the bottom of the outer wall of the support column (3) and partially contacts the cold-applied tape.

5. The heating device according to claim 4, characterized in that: A spring column (32) is provided circumferentially at the top of the outer wall of the support column (3) to separate the upper and lower cold-wound strips.

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