JP6889615B2 - Asphalt pavement solution heating / heat retention device for curing accelerator - Google Patents

Description

The present invention is for heating and holding a curing accelerator for accelerating the curing of an asphalt solution on a pavement surface to a predetermined constant temperature before spraying the asphalt pavement work on a road surface or the like. It is about the device.

Generally, asphalt pavement on a road surface is performed by spraying a predetermined asphalt pavement solution or the like stored in a tank of an asphalt pavement vehicle onto the road surface through a predetermined spray nozzle provided at the rear portion of the vehicle. It is something like that. Then, in such asphalt pavement work, following the spraying of the asphalt pavement solution, a curing accelerator is sprayed as an auxiliary agent for accelerating the curing of the asphalt pavement solution. By the way, this curing accelerator needs to be kept at a constant temperature until it is sprayed by a predetermined spray nozzle. Therefore, for example, as described in Japanese Patent Application Laid-Open No. 2004-100145, a jacket is provided on the outer peripheral surface of the asphalt pavement solution storage tank, and the asphalt pavement is formed in the space formed between the outer surface of these tanks and the jacket. While introducing a solution or the like, the thermal fluid composed of the asphalt pavement solution or the like is heated to a constant temperature through a heating means such as an electric heater provided on the outer bottom surface of the jacket to maintain the fluidity of the asphalt pavement solution. I am trying to do it. Further, such an asphalt pavement solution is sprayed from the spray nozzle.

Japanese Unexamined Patent Publication No. 2004-100145

However, in this method, since a heating means such as an electric heater is attached to the outer bottom surface of the jacket, the bottom surface portion of the jacket provided so as to surround the outer peripheral surface of the tank is intensively heated. Therefore, there is a problem that it is difficult to uniformly heat the asphalt pavement solution in the tank. Further, this method has a problem that the thermal efficiency is poor and the capacity of the asphalt pavement solution that can be heated to a predetermined temperature is limited. Furthermore, since this product uses an electric heating method, it takes too much time to raise the temperature of the solution, and there is a concern that a fire may occur due to empty heating. In order to solve such a problem, a tank in which the asphalt pavement solution hardening accelerator, which is incidentally sprayed during asphalt pavement, is stored is used as a double-structured method to improve heat retention and is housed in the tank. It is an object (problem) of the present invention to provide a heat retaining device for an asphalt pavement solution curing accelerator that keeps the curing accelerator itself at a constant temperature at all times.

In order to solve the above problems, the following measures have been taken in the present invention. That is, in the first invention according to claim 1, regarding the heating / heat retaining device for the asphalt pavement solution curing accelerator, a predetermined volume of the asphalt pavement solution curing accelerator is stored and has a rectangular parallelepiped shape. A tank, a heat insulating tank formed so as to wrap both side surfaces and a bottom surface of the rectangular parallelepiped tank and formed so as to store hot water, and a heat insulating tank provided in the rectangular parallelepiped tank, which is folded in a zigzag manner. A hollow pipe-shaped member formed so as to have a plurality of folded portions that are folded into a shape, and a heat exchange mechanism in which hot water is introduced inside and a heat exchange mechanism that supplies hot water at a predetermined temperature to the heat exchange mechanism. The heater unit is mainly formed with a predetermined heat source device, and the heater unit is provided in the rectangular parallelepiped tank and is formed so as to have a triangular planar shape, and forms the triangular shape. One side is fixed to the bottom surface of the rectangular parallelepiped tank, and the other side is provided so as to be in contact with the inner side surface of the rectangular parallelepiped tank, and these are the rectangular parallelepiped shapes. It was decided to adopt a configuration consisting of heat transfer fins established so as to face each other on both inner side surfaces of the tank.

By adopting the above configuration, in the first invention according to claim 1, the heating and heat retention of the curing accelerator is kept at a constant temperature by a heater provided on the bottom surface as in the conventional one. The solution stored in the tank with hot water heated to a predetermined temperature is held at a constant temperature, for example, 80 ° C. by heat exchange action with the hot water. Is. As a result, the curing accelerator is not rapidly heated and is always maintained in a stable state. Further, in the present invention, even if the curing accelerator contained in the tank is emptied due to use or the like, there is no possibility that the tank will be emptied, and in terms of safety. Will also be excellent.

Further, in the one of the present invention, the heat exchange mechanism is a heat transfer fin composed of a hollow pipe portion (hot water flowing portion) into which hot water is introduced and a plate-shaped member provided so as to be in contact with the inside of the heat insulating tank. , The contact area with the curing accelerator, which is a liquid contained in the rectangular parallelepiped-shaped tank, increases, and the heat generated by the hot water introduced into the hot water flow section is the heat transfer fins and the like. It will be efficiently propagated to the curing accelerator through the above. That is, the heating and heat retaining functions of the curing accelerator are further enhanced.

It is a system diagram which shows the whole structure of this invention. It is a three-dimensional perspective view which shows the whole structure of the heat exchange mechanism which forms the main part of this invention. It shows the whole structure of the heat insulation tank provided around the tank which forms the main part of this invention, and shows the AA cross section in FIG.

A mode for carrying out the present invention will be described with reference to FIGS. 1 to 3. According to the embodiment of the present invention, for example, as shown in FIG. 1, a tank 1 in which a predetermined amount of a curing accelerator for curing an asphalt pavement solution sprayed on a road surface is stored and around the tank 1. A heat insulating plate 2 made of a heat insulating member provided with a predetermined space between the heat insulating plate 2 and the outer wall of the tank 1 and between the heat insulating plate 2 and the outer peripheral surface of the tank 1. A space portion to be formed, in which a heat insulating tank 3 into which hot water warmed to a predetermined temperature is introduced, and a space formed by these tanks 1 and the heat insulating tank 3 are installed in a state of being bent in a zigzag shape. The heat exchange mechanism 5 is composed of a hollow pipe and hot water is introduced into the inside, a supply path 7 formed so as to supply hot water at a predetermined temperature to the heat exchange mechanism 5, and the heat exchange mechanism. It is basically composed of a heater unit 6 for generating hot water for supplying to 5.

In a structure having such a basic configuration, specifically, as shown in FIG. 1 or 2, the heat exchange mechanism 5 includes a hot water flow section 51 made of a copper hollow pipe or the like having a high heat transfer coefficient, and the hot water. It is formed so as to come into contact with the flow portion 51 at a plurality of locations, and is composed of a heat transfer fin 55 made of a plate-shaped member made of copper or aluminum, which also has a high heat transfer coefficient. In the one having such a configuration, a plurality of heat transfer fins 55 are provided in the tank 1 so as to stand in a forest, and the lower portion thereof is fixed to the bottom surface portion of the tank 1. Is. Then, an appropriate portion on the outer peripheral portion of the hollow pipe-shaped hot water flow portion 51 is joined to the plurality of heat transfer fins 55.

By adopting such a configuration, the hot water flow portion 51 arranged in a zigzag shape in the tank 1 is fixed at a predetermined position in the tank 1. Then, when the predetermined hot water is introduced into the hollow pipe-shaped hot water flowing portion 51 having such a configuration through the supply path 7, the heat of the hot water is transferred to the tank 1 via the heat transfer fin 55. It will be propagated to the solution stored inside. By such a heat transfer action, the solution (curing accelerator) is appropriately warmed to a temperature. Further, the heat transfer fin 55 also serves as a damper that suppresses the waviness phenomenon of the solution (curing accelerator) contained in the tank 1 caused by the shaking of the vehicle body or the like.

In the structure having such a configuration, a heat insulating tank 3 is provided around the tank 1 so as to surround the tank 1, for example, as shown in FIG. Specifically, a heat insulating plate 2 formed of a heat insulating member is provided around the outer peripheral wall of the tank 1 via a predetermined space, whereby the space is kept warm. The tank 3 will be formed. The heat insulating plate 2 is also provided on the upper surface of the tank 1 to prevent heat dissipation from the curing accelerator, which is a solution contained in the tank 1. In this way, the heat insulating tank 3 surrounded by the heat insulating plate 2 is formed on the bottom surface portion of the tank 1 and the side surface portions composed of four surfaces. Then, a predetermined hot water is introduced into such a heat insulating tank 3 via the heat exchange mechanism 5. Further, the heat insulating plate 2 is placed on the upper surface of the tank 1. As a result, the solution contained in the tank 1 is always maintained at a predetermined temperature.

In such a configuration, a supply path 7 through which hot water flows is connected to one end 511 of the hot water flow section 51 forming the heat exchange mechanism 5, and one end of the supply path 7 is connected to the heater unit 6. It is designed to be connected. In this way, the hot water generated by the heater unit 6 is introduced to one end 511 side of the hot water flow unit 51 via the supply path 7. Then, this hot water flows in the hot water flow portion 51 composed of hollow pipes arranged in a zigzag shape in the tank 1. Further, by such flow of hot water, heat of a predetermined temperature is propagated to the solution contained in the tank 1 through the heat transfer fins 55 continuously provided in the hot water flow section 51. (See FIG. 2). The hot water whose heat has been transferred to the solution in this way is sent from the other end 516 of the hot water flow unit 51 to the heat insulating tank 3 and also sent to the heat insulating tank 3. The hot water is returned to the heater unit 6 via the recovery path 77.

In the one having such a configuration, as the hot water introduced into the hot water flow unit 51 forming the heat exchange mechanism 5, in the present embodiment, the hot water warmed to about 80 ° C. has been used. ing. Further, the hot water after being sent to the heat exchange mechanism 5 and undergoing heat exchange in this way is from the other end 516 of the hot water flow portion 51 forming the heat exchange mechanism 5 to the tank 1. The hot water sent to the heat insulating tank 3 provided around the heat insulating tank 3 is returned to the heater unit 6 via the recovery path 77. The heater unit 6, which serves to generate such hot water and supply it to the heat exchange mechanism 5, uses the heater unit for generating hot water, which is composed of an electric heater or the like, and the hot water generated by the heater unit. It consists of a pump unit that sends out to the supply path 7. The pump unit is mainly formed of a gear pump driven by a predetermined electric motor.

1 Tank 2 Insulation plate 3 Heat insulation tank 5 Heat exchange mechanism 51 Hot water flow part 511 One end 516 The other end 55 Heat transfer fin 6 Heater unit 7 Supply path 77 Recovery path

Claims (1)

A rectangular parallelepiped tank containing a predetermined volume of asphalt pavement solution hardening accelerator, and a rectangular parallelepiped tank formed to wrap both side surfaces and a bottom surface of the rectangular parallelepiped tank so as to store hot water. A hollow pipe-shaped member provided in the rectangular parallelepiped-shaped tank and formed so as to have a plurality of folded portions folded in a zigzag shape, and hot water is introduced inside. A heat exchange mechanism, a heater unit that supplies hot water at a predetermined temperature to the heat exchange mechanism and mainly forms a predetermined heat source device, and a triangular parallelepiped shape tank provided in the rectangular parallelepiped shape tank. One side of the triangle is fixed to the bottom surface of the rectangular parallelepiped tank, and the other side is the rectangular parallelepiped tank. It is characterized in that it is provided in contact with the inner side surface portion of the above-mentioned rectangular parallelepiped-shaped tank, and is composed of heat transfer fins established so as to face each other at the inner side surface portions of the rectangular parallelepiped-shaped tank. Asphalt pavement solution heating and heat retention device for hardening accelerator.

Images