Insulation Pipe Insulation Material Filling Device

Abstract

The present invention belongs to the technical field of pipe processing applications, relates to insulating pipes, and in particular to an insulating material filling device for insulating pipes. It includes a carrier table arranged in a cuboid shape, an inner pipe fixing frame and an outer pipe fixing frame arranged at one end of the carrier table. An outer pipe auxiliary fixing frame is also arranged on the carrier table. An operating table is also arranged at the end of the carrier table far from the inner pipe fixing frame. A sliding seat is arranged on the operating table. The sliding seat is slidably arranged on the operating table. A hollow rotary joint is arranged on the sliding seat. By improving the structure of the existing design, the present invention changes the traditional way of moving the pipe to moving the dispensing pipe. Utilizing the rapid rotation of the dispensing pipe, the swinging of the polyurethane foam material is realized, so that it can better contact with air and achieve rapid foaming. At the same time, the swinging process enables the polyurethane foam material to be evenly distributed, thereby achieving the purpose of complete filling, and thus solving the technical problems existing in the existing design.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipe processing applications, relates to thermal insulation pipes, and particularly relates to a thermal insulation material filling device for thermal insulation pipes. Background Art

[0002] Thermal insulation pipes are widely used in liquid and gas transportation pipe networks, petroleum and chemical pipe insulation projects, district heating pipe networks, district cooling pipe networks, municipal thermal insulation pipe network projects, etc. High-temperature prefabricated directly buried thermal insulation pipes are a type of directly buried prefabricated thermal insulation pipe with good thermal insulation performance, safety and reliability, and low project cost. It effectively solves the problems of thermal insulation, sliding lubrication, and waterproofing of the exposed pipe ends for prefabricated directly buried thermal insulation pipes used for high-temperature heat transmission of 130°C - 600°C in urban district heating. High-temperature prefabricated directly buried thermal insulation pipes not only have advanced technologies and practical performances that are difficult to compare with traditional trench and overhead laying pipes, but also have significant social and economic benefits, and are also powerful measures for heat supply energy conservation.

[0003] The prefabricated directly buried thermal insulation pipe with a high-density polyethylene plastic outer sheath and polyurethane foam is popular among people due to its excellent performance, convenient construction, and long service life. Its structure consists of three parts: an outer pipe, a thermal insulation layer, and an inner pipe. Among them, the outer pipe material is a polyethylene jacket pipe, fiberglass, or other materials, the thermal insulation layer is polyurethane foam, and the inner pipe is generally a steel pipe.

[0004] In traditional processing, generally, the inner pipe and the outer pipe are supported separately, holes are opened on the outer pipe, and then polyurethane is injected. The polyurethane quickly foams between the inner pipe and the outer pipe to form a thermal insulation layer. Although this method can achieve the purpose of filling the thermal insulation layer, due to the rapid foaming of the polyurethane, the filling is incomplete, and thus the thermal insulation performance of the entire thermal insulation pipe is inconsistent.

[0005] To solve the above problems, people considered using the rotation of the inner pipe and the outer pipe to achieve complete filling. However, when the polyurethane is filled, it is in a liquid state and has a certain fluidity, resulting in the fact that although the effect is better than the traditional filling method, there are still places that cannot be filled. Summary of the Invention

[0006] In view of the technical problems existing in the filling of thermal insulation materials for thermal insulation pipes, the present invention provides a thermal insulation material filling device for thermal insulation pipes with reasonable design, ingenious structure, and capable of effectively filling the polyurethane completely.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows: The present invention provides a heat-insulating pipe heat-insulating material filling device, which includes a rectangular parallelepiped-shaped carrying platform, an inner pipe fixing frame and an outer pipe fixing frame arranged at one end of the carrying platform. An outer pipe auxiliary fixing frame is also arranged on the carrying platform. The outer pipe auxiliary fixing frame is arranged at one end of the carrying platform far from the outer pipe fixing frame. The inner pipe fixing frame is arranged at one end of the outer pipe fixing frame far from the outer pipe auxiliary fixing frame. An operating platform is also arranged at one end of the carrying platform far from the inner pipe fixing frame. A sliding seat is arranged on the operating platform. The sliding seat is slidably arranged on the operating platform. A hollow rotary joint is arranged on the sliding seat. The fixed end of the hollow rotary joint is fixed on the sliding seat. A connecting pipe at the fixed end of the hollow rotary joint is communicated with a polyurethane foaming agent. An agent outlet pipe is arranged on the rotary end of the hollow rotary joint. The agent outlet pipe is communicated with the liquid outlet of the rotary end of the hollow rotary joint. The agent outlet pipe can extend between the outer pipe and the inner pipe under the action of the sliding seat. An inner pipe support column is also arranged on the sliding seat. The inner pipe support column passes through the hollow rotary joint.

[0008] Preferably, a support groove is arranged on the side wall of the inner pipe support column. The support groove is arranged along the axis of the inner pipe support column. A support seat is arranged in the support groove. A support ball is arranged in the support seat. The support balls are arranged at intervals along the axis of the inner pipe support column in the support seat. The support balls are rotatably arranged in the support seat. A support spring is arranged between the support seat and the support groove.

[0009] Preferably, the support grooves are uniformly distributed on the side wall of the inner pipe support column.

[0010] Preferably, a support pipe is arranged on the agent outlet pipe. A telescopic pipe is sleeved in the support pipe. A sliding ball is arranged at one end of the telescopic pipe far from the support pipe. The sliding ball is rotatably arranged in the telescopic pipe. A telescopic spring is arranged between the telescopic pipe and the support pipe.

[0011] Preferably, the inner pipe fixing frame, the outer pipe fixing frame and the outer pipe auxiliary fixing frame all include a semi-circular frame arranged on the carrying platform and an auxiliary semi-circular frame arranged above the semi-circular frame. A through hole for the outer pipe or the inner pipe to pass through is formed between the auxiliary semi-circular frame and the semi-circular frame.

[0012] Preferably, telescopic cylinders are arranged on both sides of the semi-circular frame. The power ends of the telescopic cylinders are connected to both sides of the auxiliary semi-circular frame.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0014] 1. The present invention provides a filling device for heat-insulating materials of a heat-insulating pipe. By improving the structure of the existing design, the traditional way of moving the pipe is changed to moving the agent outlet pipe. By using the rapid rotation of the agent outlet pipe, the swinging of the polyurethane foam material is realized, so that it can better contact with air and achieve rapid foaming. At the same time, the swinging process also enables the polyurethane foam material to be evenly distributed, so as to achieve the purpose of complete filling, and thus solves the technical problems existing in the existing design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 Structural schematic diagram of the filling device for heat-insulating materials of a heat-insulating pipe provided in Embodiment 1;

[0017] Figure 2 Structural schematic diagram of the agent outlet pipe of the filling device for heat-insulating materials of a heat-insulating pipe provided in Embodiment 1 detaching from the inner pipe and the outer pipe;

[0018] Figure 3 Structural schematic diagram of the agent outlet pipe of the filling device for heat-insulating materials of a heat-insulating pipe provided in Embodiment 1 detaching from the inner pipe and the outer pipe at another angle;

[0019] Figure 4 Structural schematic diagram of the inner pipe fixing bracket provided in Embodiment 1;

[0020] Figure 5 Structural schematic diagram between the hollow rotary joint and the inner pipe support column provided in Embodiment 1;

[0021] Figure 6 Structural schematic diagram between the support pipe and the telescopic pipe provided in Embodiment 1;

[0022] In the above figures, 1, bearing platform; 11, inner pipe fixing bracket; 12, outer pipe fixing bracket; 13, outer pipe auxiliary fixing bracket; 2, inner pipe; 3, outer pipe; 4, operation table; 5, sliding seat; 6, hollow rotary joint; 61, fixed end of the hollow rotary joint; 62, rotary end of the hollow rotary joint; 63, connecting pipe; 64, agent outlet pipe; 65, support pipe; 66, telescopic pipe; 67, sliding ball; 7, inner pipe support column; 71, support seat; 72, support ball; 8, semi-circular frame; 81, auxiliary semi-circular frame; 82, telescopic cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to more clearly understand the above-mentioned objects, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0024] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0025] Embodiment 1, as Figures 1 to 6 shown, the purpose of this embodiment is to provide a heat-insulating material filling device for a prefabricated directly buried heat-insulating pipe with a polyurethane foam outer protection layer made of high-density polyethylene plastic (hereinafter referred to as the heat-insulating pipe) that can achieve complete filling and reduce the existence of voids when filling the polyurethane foam. To this end, the heat-insulating material filling device provided in this embodiment includes a rectangular parallelepiped-shaped carrier table, an inner pipe fixing frame, and an outer pipe fixing frame provided at one end of the carrier table. An outer pipe auxiliary fixing frame is also provided on the carrier table. The outer pipe auxiliary fixing frame is provided at one end of the carrier table away from the outer pipe fixing frame, and the inner pipe fixing frame is provided at one end of the outer pipe fixing frame away from the outer pipe auxiliary fixing frame. In this way, by setting the outer pipe fixing frame and the outer pipe auxiliary fixing frame, the fixing of the outer pipe is realized, and the inner pipe fixing frame realizes the fixing of one end of the inner pipe.

[0026] The inner pipe fixing frame, the outer pipe fixing frame, and the auxiliary fixing frame can be fixed in the form of a hoop, or can be fixed in the manner provided in this embodiment. Specifically, the inner pipe fixing frame, the outer pipe fixing frame, and the outer pipe auxiliary fixing frame all include a semi-circular frame provided on the carrier table and an auxiliary semi-circular frame provided above the semi-circular frame. A through hole for the outer pipe or the inner pipe to pass through is formed between the auxiliary semi-circular frame and the semi-circular frame. At the same time, telescopic cylinders are provided on both sides of the semi-circular frame, and the power ends of the telescopic cylinders are connected to both sides of the auxiliary semi-circular frame. In this embodiment, connection plates are provided at both ends of the semi-circular frame and the auxiliary semi-circular frame. Through holes are provided on the connection plates of the semi-circular frame, and the power ends of the telescopic cylinders pass through the through holes. Through holes are also provided on the connection plates of the auxiliary semi-circular frame. The power ends of the telescopic cylinders pass through the connection plates, and nuts are provided above and below the connection plates to realize the fixation between the auxiliary semi-circular frame and the telescopic cylinders. The through holes on the connection plates of the semi-circular frame are used to place the lower nuts to realize the fitting of the semi-circular frame and the auxiliary semi-circular frame, thereby realizing the clamping of the pipe fittings.

[0027] In order to further improve the clamping effect, soft pads can be provided in the semi-circular grooves of the semi-circular frame and the auxiliary semi-circular frame. By setting the soft pads, the clamping effect is further realized.

[0028] Since the clamping of the inner tube is only achieved at one end, it is impossible to ensure the stability of the inner tube. If the other end of the inner tube is clamped, then only the inner tube and the outer tube can rotate, rather than the polyurethane spray tube. If the polyurethane spray tube rotates, during the rotation process, the polyurethane foam material will be thrown out, thereby increasing the contact area with the air, enabling it to foam quickly and achieve the purpose of uniform dispersion, and then realizing the purpose of complete filling. However, if the other end of the inner tube is clamped, it will not be able to rotate. Therefore, to meet the rotation requirement, in this embodiment, an operating platform is further provided at one end of the bearing platform away from the inner tube fixing bracket. In this embodiment, the operating platform and the bearing platform are integrally structured, and the main difference between the operating platform and the bearing platform is that there is an opening at the top of the operating platform, which is designed in a groove shape. A sliding seat is arranged in the groove, and the sliding seat is slidably arranged on the operating platform. Specifically, a sliding motor is arranged in the groove, the power end of the sliding motor is connected with a lead screw, a lead screw nut is sleeved on the lead screw, and the lead screw nut is arranged on the sliding seat. In this way, under the action of the lead screw nut, the movement of the sliding seat is realized.

[0029] Considering the requirements of rotational fixation, in this embodiment, a hollow rotary joint is arranged on the sliding seat. The hollow rotary joint can achieve the characteristic that the fixed end does not move and the rotary end rotates. Therefore, the fixed end of the hollow rotary joint is fixed on the sliding seat. A connecting pipe at the fixed end of the hollow rotary joint is communicated with a polyurethane foaming agent, and a dosing pipe is arranged on the rotary end of the hollow rotary joint. The dosing pipe is the polyurethane spray tube, and the dosing pipe is communicated with the liquid outlet of the rotary end of the hollow rotary joint. The dosing pipe can be extended between the outer tube and the inner tube under the action of the sliding seat. At the same time, an inner tube support column is also arranged on the sliding seat, and the inner tube support column passes through the hollow rotary joint. In this way, the inner tube support column is used to support the other end of the inner tube, and the arrangement of the hollow rotary joint enables the inner tube support column not to interfere with the rotation of the dosing pipe, thereby realizing the rotation of the polyurethane foam material.

[0030] Considering that the dosing pipe needs to extend to the other end of the outer tube, the inner tube support column also needs to extend to a deeper position. During the movement of the sliding seat, friction will be generated between the inner tube support column and the inner tube, thus affecting the accuracy. Therefore, a support groove is arranged on the side wall of the inner tube support column, and the support groove is arranged along the axis of the inner tube support column. A support seat is arranged in the support groove, and the support seat is arranged in a cuboid groove shape. Support balls are arranged in the support seat, and the support balls are arranged at intervals along the axis of the inner tube support column in the support seat. The support balls are rotatably arranged in the support seat, and a support spring is arranged between the support seat and the support groove. At the same time, the end of the support seat close to the inner tube is processed into an inclined surface. In this way, while the support balls support the inner tube, they do not affect the movement of the inner tube support column.

[0031] To achieve the stability of the support, the support grooves are evenly distributed on the side wall of the inner tube support column. In this embodiment, a total of 4 support grooves are provided.

[0032] Considering that the length of the agent outlet pipe is relatively long, there will be a problem of poor stability during its rotation. Therefore, a support pipe is provided on the agent outlet pipe, and the support pipe is arranged towards the center of the inner tube. A telescopic pipe is sleeved inside the support pipe. A sliding ball is provided at one end of the telescopic pipe away from the support pipe, and the sliding ball is rotatably arranged inside the telescopic pipe. A telescopic spring is arranged between the telescopic pipe and the support pipe. The setting of the sliding ball mainly takes into account the universality of the rotation of the sphere, which can not only meet the rotation requirements but also achieve the need for forward and backward movement.

[0033] To ensure stability, the support pipes are preferably arranged at intervals on the agent outlet pipe. At the same time, the agent outlet pipes are also evenly arranged in a ring on the hollow rotary joint. In this embodiment, the hollow rotary joint adopts a structure of two inlets and four outlets. At the same time, a reinforcing ring is arranged between the agent outlet pipes to cooperate with the sliding ball to achieve the stability of the rotation of the agent outlet pipe.

[0034] Through the above settings, the rotation of the agent outlet pipe is effectively realized, and then the centrifugal force generated by the rotation is used to make the polyurethane foam evenly distributed, so as to achieve the purpose of complete filling.

[0035] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A heat-insulating pipe heat-insulating material filling device, comprising a carrier table arranged in a cuboid shape, an inner pipe fixing frame and an outer pipe fixing frame arranged at one end of the carrier table. An outer pipe auxiliary fixing frame is further arranged on the carrier table. The outer pipe auxiliary fixing frame is arranged at one end of the carrier table away from the outer pipe fixing frame, and the inner pipe fixing frame is arranged at one end of the outer pipe fixing frame away from the outer pipe auxiliary fixing frame. Characterized in that, An operating table is further arranged at one end of the carrier table away from the inner pipe fixing frame. A sliding seat is arranged on the operating table. The sliding seat is slidably arranged on the operating table. A hollow rotary joint is arranged on the sliding seat. The fixed end of the hollow rotary joint is fixed on the sliding seat. A connecting pipe at the fixed end of the hollow rotary joint is communicated with a polyurethane foaming agent. An agent outlet pipe is arranged on the rotary end of the hollow rotary joint. The agent outlet pipe is communicated with the liquid outlet of the rotary end of the hollow rotary joint. The agent outlet pipe can extend between the outer pipe and the inner pipe under the action of the sliding seat. An inner pipe support column is further arranged on the sliding seat. The inner pipe support column passes through the hollow rotary joint. A support groove is arranged on the side wall of the inner pipe support column. The support groove is arranged along the axis of the inner pipe support column. A support seat is arranged in the support groove. A support ball is arranged in the support seat. The support balls are arranged at intervals along the axis of the inner pipe support column in the support seat. The support balls are rotatably arranged in the support seat. A support spring is arranged between the support seat and the support groove. A support pipe is arranged on the agent outlet pipe. A telescopic pipe is sleeved in the support pipe. A sliding ball is arranged at one end of the telescopic pipe away from the support pipe. The sliding ball is rotatably arranged in the telescopic pipe. A telescopic spring is arranged between the telescopic pipe and the support pipe.

2. The heat-insulating pipe heat-insulating material filling device according to claim 1, Characterized in that, The support grooves are uniformly distributed on the side wall of the inner pipe support column.

3. The heat-insulating pipe heat-insulating material filling device according to claim 2, Characterized in that, The inner pipe fixing frame, the outer pipe fixing frame and the outer pipe auxiliary fixing frame all include a semi-circular frame arranged on the carrier table and an auxiliary semi-circular frame arranged above the semi-circular frame. A through hole for the outer pipe or the inner pipe to pass through is formed between the auxiliary semi-circular frame and the semi-circular frame.

4. The heat-insulating pipe heat-insulating material filling device according to claim 3, Characterized in that, Expansion cylinders are arranged on both sides of the semi-circular frame. The power ends of the expansion cylinders are connected to both sides of the auxiliary semi-circular frame.

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