Spinning box heating and heat preservation system based on heat conduction oil gravity flow principle

Abstract

A spinning box heating and heat preservation system based on the heat conduction oil gravity self-flowing principle comprises a hanging bracket, an oil liquid heating tank, a heat exchange heat preservation flow guide structure, a backflow tank and an oil pump, the upper end of the hanging bracket is fixedly arranged on a workshop top beam, the oil liquid heating tank is arranged on the hanging bracket, and the heat exchange heat preservation flow guide structure is arranged outside a spinning box. The lower end of the oil heating tank is connected with the bottom of the heat-exchange heat-preservation diversion structure through an oil inlet pipeline, the top of the heat-exchange heat-preservation diversion structure is connected with the bottom of the return tank through an oil outlet pipeline, and the oil pump is arranged at the bottom in the return tank and connected with the upper portion of the oil heating tank through an oil return pipeline. The device is arranged at the high position of a workshop, does not occupy the ground space, and has high safety. The principle that heated conduction oil is automatically injected to the outside of the spinning box by means of height difference to heat and preserve heat of melt is adopted, so that the oil pump works intermittently, the flow speed of the conduction oil in the hexahedral heating and heat preservation cavity is slowed down, the heat exchange efficiency is improved, and the service life of the oil pump is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the production technology field of chemical fiber, specifically relates to a spinning beam heating and heat preservation system based on the gravity flow principle of heat conducting oil. BACKGROUND

[0002] In the spinning process of chemical fiber, the spinning beam adopts heat conducting oil for heating and heat preservation, and the supply of heat conducting oil usually adopts an oil pump as power, the oil pump works uninterruptedly, and the high-temperature heat conducting oil always passes through the oil pump, which not only consumes a lot of energy, but also easily damages the oil pump; the greater problem is that the heat exchange time of heat conducting oil through the spinning beam body and the internal melt is short (the flow rate of heat conducting oil is relatively fast), the heat utilization efficiency is relatively low, and the temperature fluctuation in the spinning beam is large. CONTENT

[0003] In order to solve the above technical problems existing in the prior art, the utility model provides a spinning beam heating and heat preservation system based on the gravity flow principle of heat conducting oil, which uses the height difference of oil level as the power of heat conducting oil supply, and the oil pump is not easy to be damaged, the heat exchange efficiency is high, and the temperature is more stable.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: the spinning beam heating and heat preservation system based on the gravity flow principle of heat conducting oil, which comprises a hanging bracket, an oil liquid heating tank, a heat exchange and heat preservation guide structure, a reflux tank and an oil pump, the upper end of the hanging bracket is fixed on the workshop top beam, the oil liquid heating tank is arranged on the hanging bracket, the heat exchange and heat preservation guide structure is arranged outside the spinning beam, the lower end of the oil liquid heating tank is connected with the bottom of the heat exchange and heat preservation guide structure through an oil inlet pipeline, the top of the heat exchange and heat preservation guide structure is connected with the bottom of the reflux tank through an oil outlet pipeline, the oil pump is arranged in the bottom of the reflux tank, and the oil pump is connected with the upper part of the oil liquid heating tank through an oil return pipeline.

[0005] The oil liquid heating tank is provided with an electric heating coil, a safety valve and an oil supplementing port are arranged on the top of the oil liquid heating tank, an oil cover is arranged at the oil supplementing port, and a temperature sensor is arranged on the side of the oil liquid heating tank.

[0006] The reflux tank is located above the spinning beam, a lower liquid level sensor is arranged in the lower part of the reflux tank, an upper liquid level sensor is arranged in the upper part of the reflux tank, the signal output ends of the temperature sensor, the lower liquid level sensor and the upper liquid level sensor are connected with a PLC controller, and the signal output ends of the PLC controller are connected with the switch of the electric heating coil and the control of the oil pump.

[0007] The heat exchange heat preservation guide structure comprises a shell arranged outside the spinning beam, a heat insulation layer arranged outside the shell, six heat preservation hexahedral cavities respectively arranged between six surfaces of the inner wall of the shell and six surfaces of the outer wall of the spinning beam, an oil outlet joint and an oil inlet joint respectively arranged at the center of the top and the center of the bottom of the heat preservation hexahedral cavities and penetrating through the heat insulation layer, a plurality of upper guide baffles arranged at the top of the heat preservation hexahedral cavities and diverging from the oil outlet joint, a plurality of lower guide baffles arranged at the bottom of the heat preservation hexahedral cavities and diverging from the oil inlet joint, the number of the upper guide baffles being equal to the number of the lower guide baffles and corresponding one-on-one, the outer ends of the upper guide baffles corresponding to the lower guide baffles being connected through vertical guide baffles arranged at the side of the heat preservation hexahedral cavities, and the outer sides of the upper guide baffles, the lower guide baffles and the vertical guide baffles being connected with the inner wall of the shell and the outer wall of the spinning beam.

[0008] A flow regulating valve is arranged on the oil inlet pipeline.

[0009] Compared with the prior art, the heat exchange heat preservation guide structure has the following beneficial effects:

[0010] (1) When the temperature of the heat conducting oil in the oil heating tank reaches the highest threshold value of the temperature sensor, the PLC controller sends a signal to the electric heating coil to stop heating. When the temperature of the heat conducting oil falls to the lowest threshold value of the temperature sensor, the PLC controller sends a signal to the electric heating coil to start heating. The heat conducting oil is heated, and the safety valve is opened to reduce the pressure in the oil heating tank to ensure the safety of the heat conducting oil. The heat conducting oil is added or supplemented through the oil supplementing port.

[0011] (2) The upper guide baffles, the lower guide baffles and the vertical guide baffles connect the shell and the spinning beam together, and divide the heat preservation hexahedral cavities into a plurality of guide channels, so that the heat conducting oil flows more orderly from bottom to top, and the appearance of dead angles is avoided as much as possible. The inner sides of the upper guide baffles, the lower guide baffles and the vertical guide baffles are connected with the outer wall of the spinning beam, and the heat of the upper guide baffles, the lower guide baffles and the vertical guide baffles can be directly conducted to the spinning beam, so that the upper guide baffles, the lower guide baffles and the vertical guide baffles also have the effect of increasing the heat exchange area.

[0012] (3) The upper liquid level sensor and the lower liquid level sensor are arranged in the reflux tank, and the PLC controller is used to control the opening and closing of the oil pump to make the oil pump work intermittently and prolong the service life of the oil pump.

[0013] (4) The flow rate of the heat transfer oil automatically injected into the hexahedron heating and insulation cavity is adjusted by the flow control valve, that is, the heat exchange time of the heat transfer oil in the hexahedron heating and insulation cavity is adjusted.

[0014] To sum up, the utility model adopts the principle that the heated heat-conducting oil is automatically injected into the outside of the spinning box by relying on the height difference to heat and keep the melt warm, so that the oil pump works intermittently, which not only slows down the flow rate of the heat-conducting oil in the hexahedral heating and insulation cavity, thereby improving the heat exchange efficiency, but also extends the service life of the oil pump; the utility model is arranged at a high place in the workshop, does not occupy ground space, and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 yes Figure 1 A top view of the space above the hexahedral heating and holding chamber. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples.

[0018] like Figure 1 and Figure 2 As shown, the spinning box heating and insulation system of the utility model based on the gravity self-flow principle of heat transfer oil includes a hanger 1, an oil heating tank 2, a heat exchange insulation guide structure, a reflux tank 3 and an oil pump 4. The upper end of the hanger 1 is fixed on the workshop top beam 5, the oil heating tank 2 is arranged on the hanger 1, the heat exchange insulation guide structure is arranged on the outside of the spinning box 6, the lower end of the oil heating tank 2 is connected to the bottom of the heat exchange insulation guide structure through the oil inlet pipeline 7, the top of the heat exchange insulation guide structure is connected to the bottom of the reflux tank 3 through the oil outlet pipeline 8, the oil pump 4 is arranged at the bottom of the reflux tank 3, and the oil pump 4 is connected to the upper part of the oil heating tank 2 through the return oil pipeline 9.

[0019] An electric heating coil 10 is provided in the oil heating tank 2. A safety valve 11 and an oil filling port are provided on the top of the oil heating tank 2. An oil cover 12 is provided at the oil filling port. A temperature sensor 13 is provided on the side of the oil heating tank 2.

[0020] The reflux tank 3 is located above the spinning box 6. A lower liquid level sensor 14 is provided at the lower part of the reflux tank 3, and an upper liquid level sensor 15 is provided at the upper part of the reflux tank 3. The signal output ends of the temperature sensor 13, the lower liquid level sensor 14 and the upper liquid level sensor 15 are connected to a PLC controller (not shown in the figure). The signal output ends of the PLC controller are respectively connected to the switch of the electric heating coil 10 and the control of the oil pump 4.

[0021] The heat exchange heat preservation guide structure comprises a shell 16 arranged outside the spinning beam 6, the shell 16 is externally provided with a heat insulation layer 17, the inner wall of the shell 16 is correspondingly provided with six hexahedral heating and heat preservation cavities 18 between the six outer walls of the spinning beam 6, the top center and the bottom center of the hexahedral heating and heat preservation cavities 18 are respectively provided with an oil outlet pipe joint 19 and an oil inlet pipe joint 20 penetrating through the heat insulation layer 17, the lower end of the oil outlet pipe joint 19 is provided with a plurality of upper guide baffles 21 which are arranged to diverge at the top of the hexahedral heating and heat preservation cavities 18, the upper end of the oil inlet pipe joint 20 is provided with a plurality of lower guide baffles which are arranged to diverge at the bottom of the hexahedral heating and heat preservation cavities 18, the number of the upper guide baffles 21 and the lower guide baffles is equal and one-to-one corresponding, the outer ends of the corresponding upper guide baffles 21 and the lower guide baffles are connected through vertical guide baffles 23 arranged at the side of the hexahedral heating and heat preservation cavities 18, the outer side edges of the upper guide baffles 21, the lower guide baffles and the vertical guide baffles 23 are connected with the inner wall of the shell 16, and the inner side edges of the upper guide baffles 21, the lower guide baffles and the vertical guide baffles 23 are connected with the outer wall of the spinning beam 6. The oil inlet pipeline 7 is provided with a flow regulating valve 22.

[0022] The specific working process of the utility model is as follows: the heat conducting oil is heated to the set temperature in the oil heating tank 2 through the electric heating coil pipe 10, and then enters the hexahedral heating and heat preservation cavities 18 between the shell 16 and the spinning beam 6 through the oil inlet pipeline 7 by gravity, the heat conducting oil flows from bottom to top in the hexahedral heating and heat preservation cavities 18, heats and preserves the melt in the spinning beam 6, and finally is discharged into the reflux tank 3 through the oil outlet pipeline 8, the liquid level of the heat conducting oil rises in the reflux tank 3, when the upper liquid level sensor 15 monitors the liquid level of the heat conducting oil, a signal that the liquid level has reached the upper limit is sent to the PLC controller, the PLC controller sends a starting signal to the oil pump 4, the oil pump 4 is started, the heat conducting oil in the reflux tank 3 is pumped out and transported to the oil heating tank 2 through the oil return pipeline 9, with the pumping of the oil pump 4, the liquid level of the heat conducting oil in the reflux tank 3 falls, when the lower liquid level sensor 14 monitors the liquid level of the heat conducting oil, a signal that the liquid level has fallen to the lower limit is sent to the PLC controller, the PLC controller sends a closing signal to the oil pump 4, and the oil pump 4 is closed. According to the above working process, the heat conducting oil in the oil heating tank 2 is continuously injected into the spinning beam 6 to heat and preserve the melt in the spinning beam 6, the heat exchanging heat conducting oil flows into the reflux tank 3, and then flows back to the oil heating tank 2 through the intermittently working oil pump 4.

[0023] The flow of the heat conducting oil automatically injected into the hexahedral heating and heat preservation cavities 18 is adjusted through the flow regulating valve 22, that is, the heat exchange time of the heat conducting oil in the hexahedral heating and heat preservation cavities 18 is adjusted.

[0024] It needs to be emphasized that the PLC controller, the oil pump 4, the safety valve 11, the upper liquid level sensor 15, the lower liquid level sensor 14, the electric heating coil 10 and the temperature sensor 13 in the utility model are all prior art and can be purchased in the market. The automatic control through the PLC controller in the utility model is a conventional technology and does not involve a new computer program.

[0025] The above examples illustrate the basic principles and characteristics of the utility model, but the above only illustrates the preferred embodiments of the utility model, and is not limited by the described embodiments. Those skilled in the art can make many forms of deformation and improvement under the inspiration of the patent without departing from the purpose of the utility model and the scope protected by the claims, and these all belong to the protection scope of the utility model. Therefore, the utility model patent and the protection scope should be subject to the appended claims.

Claims

1. The spinning box heating and heat preservation system based on the principle of thermal oil gravity flow is characterized by: It includes a hanger, an oil heating tank, a heat exchange insulation guide structure, a reflux tank and an oil pump. The upper end of the hanger is fixed on the top beam of the workshop, the oil heating tank is arranged on the hanger, the heat exchange insulation guide structure is arranged outside the spinning box, the lower end of the oil heating tank is connected to the bottom of the heat exchange insulation guide structure through an oil inlet pipeline, the top of the heat exchange insulation guide structure is connected to the bottom of the reflux tank through an oil outlet pipeline, the oil pump is arranged at the bottom of the reflux tank, and the oil pump is connected to the upper part of the oil heating tank through a return oil pipeline.

2. The spinning box heating and heat preservation system based on the principle of thermal oil gravity flow according to claim 1 is characterized in that: The oil heating tank is equipped with an electric heating coil, a safety valve and an oil filling port are installed on the top of the oil heating tank, an oil cover is installed at the oil filling port, and a temperature sensor is installed on the side of the oil heating tank; The reflux tank is located above the spinning box. A lower liquid level sensor is provided at the lower part of the reflux tank, and an upper liquid level sensor is provided at the upper part of the reflux tank. The signal output ends of the temperature sensor, the lower liquid level sensor and the upper liquid level sensor are connected to the PLC controller. The signal output ends of the PLC controller are respectively connected to the switch of the electric heating coil and the oil pump control.

3. The spinning box heating and heat preservation system based on the principle of gravity flow of thermal oil according to claim 1 or 2, characterized in that: The heat exchange insulation and flow guiding structure includes a shell arranged outside the spinning box, a heat insulation layer is arranged outside the shell, and a hexahedral heating and heat preservation cavity is provided between the six inner walls of the shell and the six outer walls of the spinning box respectively. The top center and the bottom center of the hexahedral heating and heat preservation cavity are respectively provided with an oil outlet pipe joint and an oil inlet pipe joint that pass through the heat insulation layer. The lower port of the oil outlet pipe joint is provided with a plurality of upper flow guiding baffles radiating to the surrounding areas at the top of the hexahedral heating and heat preservation cavity. The upper port of the oil inlet pipe joint is provided at the top of the hexahedral heating and heat preservation cavity. A number of lower guide baffles are provided at the bottom of the hexahedral heating and insulation chamber radiating outward. The number of upper guide baffles and lower guide baffles is equal and corresponds to each other. The outer ends of the upper and lower corresponding guide baffles are connected by a vertical guide baffle located on the side of the hexahedral heating and insulation chamber. The outer sides of the upper guide baffles, lower guide baffles and vertical guide baffles are all connected to the inner wall of the shell, and the inner sides of the upper guide baffles, lower guide baffles and vertical guide baffles are all connected to the outer wall of the spinning box.

4. The spinning box heating and heat preservation system based on the principle of gravity flow of thermal oil according to claim 1 or 2, characterized in that: A flow regulating valve is provided on the oil inlet pipeline.

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