JPH0714387Y2 - Fiber rope heat treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a heat treatment device for fiber ropes.

[Prior art and its technical problems] In the manufacturing process of fiber rope, eliminate the internal repulsive force due to the twist of the rope, prevent the rope from losing its shape and kinking, and make it into a hard rope (for example, polypropylene or polyethylene rope). In order to give flexibility, a treatment of heating a rope kept in a lubricated state is performed.

Examples of this heat treatment method include a method of passing the rope through a hot water bath maintained near the boiling point, a so-called dielectric heating method of applying a high frequency electric field, and a method of using far infrared heating to avoid radio wave interference due to high frequency. . However, whichever heating method was used, it was difficult to raise the temperature of the rope lubricated with water above the boiling point of 100 ° C, and the heating treatment could not be effectively performed.

As another method of heating a rope in a lubricated state to 100 ° C. or higher, it has been proposed in JP-A-58-91843 to treat the rope in pressurized steam kept at an absolute pressure of 1 kg / cm ² or more. There is. This method is theoretically possible, but it is difficult to obtain a high temperature even if the absolute pressure is slightly increased, as is clear from the fact that even if the absolute pressure is set to 2 kg / cm ² , it reaches only 119.62 ° C. . Moreover, since the object to be treated is a rope and heating is performed under the condition that it is continuously introduced into and discharged from the container, the leakage of steam from the discharge inlet portion becomes significant, the pressure cannot be increased, and eventually the steam Saturation temperature cannot be raised.

In the above prior art, as a leakage prevention measure, a pitch voice having a rope-shaped cross section is provided at the outlet and is rotated by a motor. However, as is well known, the surface of the fiber rope is not smooth. Since it is fluffy, the pitch voice must be replaced each time the rope shape and rope diameter change, and the rotary joint, gears, and expensive torque motors must be used, and the mechanism is complicated. The cost is also high.

As another method, there is also known a method in which pressure is applied to the steam by utilizing the head difference between the water surface of the vertical cylindrical water column and the water surface of the steam chamber on the left and right of the vertical steam chamber to raise the temperature. However, with this method, even if the height of the water pressure tower is 10 m, the temperature is 120 ° C at most.
There is a problem in that it is possible to raise the temperature only to some extent, the height of the device becomes extremely large, the device becomes large and expensive, and it is difficult to take measures when the rope breaks in the device, It wasn't practical.

The present invention was devised to solve the above problems, and its purpose is to ensure that a lubricated fiber rope is continuously heat-treated at 100 ° C or higher under almost normal pressure conditions. It is an object of the present invention to provide a fiber rope heat treatment apparatus of this type that can be manufactured, and that has a simple structure and is easy to maintain.

[Means for Solving the Problems]

In order to achieve the above object, the present invention adopts a structure that uses a superheater and seals the superheated water with water. A steam supply pipe provided with a heating cylinder having an inlet cylinder and an outlet cylinder extending to the inside, and a superheater for superheating atmospheric pressure steam to a saturation temperature or higher, with a blowing port at the tip communicating with the heating cylinder. A passage, a guide sheave for the turn sheave and a water seal tank in which the lower part of the inlet cylinder and the outlet cylinder are immersed in water filled below the inlet cylinder and the outlet cylinder. .

〔Example〕

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show an outline of the fiber rope heat treatment apparatus according to the present invention. Reference numeral 1 denotes a fiber rope, which is made by twisting synthetic fibers such as polypropylene and polyethylene or natural fibers. Reference numeral 2 denotes a long tubular heating tube, and turn-sheaves 20 and 21 having a body length capable of reciprocating the fiber rope 1 a plurality of times are rotatably provided horizontally at positions near both ends in the longitudinal direction in the tube 2c. In addition, the upper end at the both ends in the longitudinal direction is 2c in the cylinder.
An inlet cylinder 2a and a mouth cylinder 2b, which communicate with each other and whose lower end is open to the atmosphere, are connected.

In this embodiment, the heating cylinder 2 is divided into an upper body 200 and a lower body 201, and the lower body 201 is supported by a support 11 provided on the base floor, to which the upper body 200 is attached / detached via a seal member 22. It is designed to be connected as much as possible. The support 11 includes one having a jack function.

3a and 3b are water sealing tanks arranged at the longitudinal ends of the heating cylinder 2, and the inlet cylinder 2a and the outlet cylinder 2b are those water sealing tanks.
Water W filled in the water-sealing tanks 3a, 3b inserted into 3a, 3b
It is immersed in the required depth from the tip. Water tank
Guide sheaves 30 and 31 are rotatably installed horizontally in 3a and 3b,
An inlet guide sheave 32 for guiding the fiber rope 1 toward the guide sheave 30 is arranged above the water seal tank 3a on the inlet side, and a guide sheave above the water seal tank 3b on the outlet side. Fiber rope 1 from 31 to the winding means (not shown)
A lead-out guide sheave 33 is provided for guiding the.

Reference numeral 4 is a steam supply pipe, the upstream of which is connected to a steam supply source such as a boiler, and steam (saturated steam, wet steam, dry steam)
Is continuously supplied, and the downstream pipe is branched into a plurality of pipes, and the branch pipes 40 and 41 reach an appropriate position of the cylindrical heating cylinder 2, that is, the lower body 201 in this embodiment, and the tip end is blown. The inlet 42 opens in the cylinder 2c. A superheater 5 for superheating steam into dry steam having a temperature equal to or higher than a saturation temperature is connected upstream of the branch pipes 40 and 41.

The superheater 5 may be of any type such as a contact type, that is, a type that heats by convective heat transfer, a radiant type, that is, a type that heats by radiant heat transfer, and the structure may be any of a horizontal type, a hanging type, and a plate type. Is. The heat source (electric heater, gas combustor, etc.) of the superheater 5 is connected to the controller 10.

A temperature detector 9 is inserted in the heating cylinder 2 and its output side is connected to a controller 10, while control valves 6, 7, 8 are provided at the inlet side of the superheater 5 and the branch pipes 40, 41, respectively.
Is provided, the detected temperature signal is input to the controller 10 and processed, and the signal from this is used to control the control valves 6, 7, 8
The opening degree and the heat source generation amount of the superheater 5 are adjusted. An optimum temperature corresponding to the material, diameter, moving speed, etc. of the fiber rope, and the steam amount and heat source generation amount corresponding thereto are input to the controller 10 in advance by a setting device.

The device of the present invention may be incorporated in the end portion of the fiber rope production line, for example, between the front capstan roll and the rear capstan roll, or may be used as a device independent of the fiber rope production line.

[Operation of Example]

The fiber rope 1 passes through an introduction guide sheave 32, is introduced into a water sealing tank 3a filled with water W, is wetted in the process of passing through the water sealing tank 3a, and passes through a guide sheave 30 arranged in the water sealing tank 3a. After going up the inside of the inlet tube 2a, entering the inside of the heating tube 2 and being wound around the turn sheaves 20 and 21 a plurality of times, the outlet tube 2
After going down b, it rises toward the guide guide sheave 33 outside via the guide sheave 31 in the water-sealed tank 3b filled with water W, and is guided to the winding means.

On the other hand, atmospheric pressure steam, for example, saturated steam, is supplied to the steam supply line 4.
Is sent to the superheater 5 through the pipe, is superheated to dry steam having a temperature equal to or higher than the saturation temperature while passing therethrough, and is blown into the inside 2c of the heating cylinder 2 from the blow-in port 42 through the branch pipes 40 and 41. The superheated steam blown into the cylinder 2c fills the cylinder 2c, but since the superheated steam is not pressurized, the cylinder 2c of the heating cylinder 2 is maintained at almost normal pressure. Moreover, since the inlet tube 2a for introducing the fiber rope 1 and the outlet tube 2b for discharging the fiber rope 1 are water-sealed in the water W stored in the water-sealing tanks 3a, 3b, the superheated steam is condensed on the water surface. . Therefore, leakage of the superheated steam into the atmosphere is prevented without completely obstructing the inflow and outflow of the fiber rope 1, and the working environment is not deteriorated.

Therefore, even though it has a simple structure, the cylinder 2c is stably maintained in an atmosphere of 100 ° C. or higher by the superheated steam filled therein,
The fiber rope 1 can be accurately overheated. In addition, the amount of heat of the superheated steam is transferred from the lower end openings of the inlet cylinder 2a and the outlet cylinder 2b to the water W in the water seal tanks 3a, 3b to become hot water, which further improves the setting effect by heating.

In the present invention, since the heating cylinder 2 is at almost normal pressure, the heating cylinder 2 is composed of the upper body 200 and the lower body 201 as in this embodiment, and the branch pipes 40 and 41 are connected to the lower body 201. If so, even if the fiber rope 1 is broken, it can be easily dealt with by removing the upper body 200.

In addition, the controller 10 automatically controls the control valves 7 and 8 and the heater 5 by the feedback signal from the temperature detector 9 to control the amount of superheated steam blown into the cylinder 2c and the superheater 5.
Since the heat source generation amount is adjusted, the heat treatment can be performed at a temperature suitable for the material of the fiber rope 1.

[Effect of device]

According to the present invention described above, the heating cylinder 2 is provided with the turn sheaves 20 and 21 that reciprocate the fiber rope 1 a required number of times in both inner end regions and the downwardly extending inlet and outlet cylinders 2a and 2b. The inlet 42 communicates with the inside 2c of the heating cylinder, and a steam supply pipe 4 is provided with a superheater 5 for superheating atmospheric pressure steam to a saturation temperature or higher, and the inlet cylinder 2a and the outlet cylinder 2b. The guide sheaves 30 and 31 for the turn sheaves 20 and 21 and the inlet cylinder 2a in the water W filled in the interior located below
Since the lower part of the outlet cylinder 2b and the water-sealed tanks 3a, 3b are immersed, the pressure inside the heating cylinder 2 is kept at almost the same pressure as the atmospheric pressure, and the temperature of water vapor in the heating cylinder is 100%. The temperature can be maintained above ℃ (more than the saturated steam temperature under atmospheric pressure), and in this state the fiber rope can be heated while continuously and smoothly leading in and out the fiber rope and reliably preventing steam from leaking. it can.

Further, since it is not a heat treatment using high-pressure moist heat steam, the heating cylinder 2 does not need to be a pressure container subject to safety regulations such as a steamer can, and the structure can be simplified, and a rubber roller for sealing and an air seal mechanism can be used. Since such a structure is not required, the structure of the introduction part and the derivation part can be simplified, and workability such as maintenance and management is good, and excellent effects such as inexpensive implementation can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical side view showing an embodiment of a fiber rope heat treatment apparatus according to the present invention, and FIG. 2 is a plan view thereof. 1 ... Fiber rope, 2 ... Heating tube, 2a ... Inlet tube, 2b ... Outlet tube, 3a, 3b ... Water sealing tank, 4 ... Steam supply line, 5 ... Superheater, 20, 21 ... Turnsheeve, 30, 31 ... Guide sheave

Claims (1)

[Scope of utility model registration request] 1. A heating cylinder 2 provided with turn sheaves 20 and 21 for reciprocating the fiber rope 1 a required number of times at both inner end regions and provided with an inlet cylinder 2a and an outlet cylinder 2b extending downward at both ends, and A blow-in port 42 communicates with the inside 2c of the heating cylinder, and a steam supply pipe line 4 provided with a superheater 5 for superheating atmospheric pressure steam to a saturation temperature or higher, and below the inlet cylinder 2a and the outlet cylinder 2b. It is characterized in that it is provided with guide sheaves 30 and 31 for the turn sheaves 20 and 21 and water sealing tanks 3a and 3b in which the lower portions of the inlet cylinder 2a and the outlet cylinder 2b are immersed in the water W located and filled inside. Heat treatment device for fiber rope.