Electromagnetic heating and energy supplementing system of corrugated paper single facer

Abstract

The utility model relates to the technical field of corrugated board production equipment, in particular to an electromagnetic heating and energy supplementing system of a corrugated paper single facer, which comprises a main steam pipe, a water return main pipe, a first branch steam pipe, a second branch steam pipe, a first water return pipe and a second water return pipe. The first water return pipe and the second water return pipe are connected with a water return main pipe, a first electromagnetic superheater device is arranged between the second branch steam pipe and the corrugated roller, the tail end of the water return main pipe is connected with a water return tank, and an outlet of the water return tank is connected with a second electromagnetic superheater device through a pipeline. And an outlet of the second electromagnetic superheater device is connected with the corrugated paper heating width pore plate through a secondary heating pipeline. Heat taken away by smoke can be reduced, a large amount of heat energy is saved, and the control system conducts intelligent and rapid energy complementation on the key heat utilization part of the corrugating machine through the electromagnetic energy complementation system according to production data such as production vehicle speed, materials and width.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated paperboard production equipment, in particular to an electromagnetic heating and energy replenishing system for a corrugated paper single-facer. Background Art

[0002] During the corrugated board production process, saturated steam is required to heat the corrugated paper, corrugating rollers, and pressure rollers. The existing technology has the following disadvantages:

[0003] 1. Existing technology only uses natural gas or coal-fired boilers to provide saturated steam. The steam supplied to corrugators is saturated steam, with a normal steam supply pressure of 8-10kg / cm², corresponding to a temperature of 172-183°C. Boilers that reach this pressure value, such as the currently available high-efficiency natural gas boilers, have an exhaust temperature of around 180°C. The high-temperature flue gas carries away a large amount of heat, resulting in significant heat loss.

[0004] 2. In the existing technology, it is impossible to quickly adjust to the process requirement temperature according to variables such as paper material (weight) and production speed on the production line. It is impossible to quickly cool down when low material and low speed production are in progress, and it is impossible to quickly heat up when high material and high speed production are in progress, which affects production quality and production efficiency.

[0005] 3. Temperatures lower than the process temperature can easily lead to a large amount of paper raw material loss and waste, while temperatures that are too high cannot guarantee the quality of the paperboard and its physical indicators such as compression resistance and burst resistance. Excessive reactive heat loss results in a large amount of heat energy waste.

[0006] 4. Since the temperature cannot be precisely controlled, the amount of glue needs to be increased during the production process, and excessive glue and water are added to ensure effective bonding of the paper. At the same time, a large amount of starch is wasted. The increase in water requires a large amount of steam heat energy, resulting in excessive steam consumption and energy waste. Utility Model Content

[0007] In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides an electromagnetic heating and energy replenishing system for a corrugated paper single-facer machine, which solves the shortcomings of the prior art.

[0008] In order to solve the above problems, the utility model provides an electromagnetic heating and energy replenishing system for a corrugated paper single-facer, comprising a main steam pipe, a return water pipe, a first branch steam pipe for heating corrugated paper, a second steam pipe for heating corrugated rollers, a first return water pipe for returning water for heating corrugated paper, and a second return water pipe for returning water for heating corrugated rollers. The first branch steam pipe and the second steam pipe are connected to the main steam pipe, the first return water pipe and the second return water pipe are connected to the return water pipe, a first electromagnetic superheater device is arranged between the second steam pipe and the corrugated roller, the end of the return water pipe is connected to a return water tank, the return water tank outlet is connected to the second electromagnetic superheater device through a pipeline, and the outlet of the second electromagnetic superheater device is connected to the corrugated paper heating door width orifice plate through a secondary heating pipe.

[0009] The first electromagnetic superheater device is connected to the steam distributor through a pipeline, and the steam distributor is connected to the corrugated roller through a plurality of branch pipes.

[0010] The bottom of the return water tank is connected to a high-temperature drainage pump through a drainage pipe, and a drainage control valve is provided at the drainage pipe of the high-temperature drainage pump.

[0011] The steam distributor is provided with a pressure sensor.

[0012] A steam inlet control valve and a steam inlet flow control valve are provided on the pipeline between the main steam pipe and the first electromagnetic superheater device.

[0013] The first branch steam pipe is provided with a paper steam inlet control valve.

[0014] The first water return pipe is provided with a paper drain control valve.

[0015] The second water return pipe is provided with a drain valve.

[0016] A secondary steam outlet control valve is provided in the pipeline between the return water tank and the second electromagnetic superheater device.

[0017] The utility model has the following advantages: When the utility model is used, the steam pressure of the main steam pipeline can be reduced to 4-5kg / cm 2The corresponding saturated steam temperature is 150-165°C. For boilers operating at this pressure, the exhaust temperature of high-efficiency natural gas boilers currently on the market is around 85°C, reducing heat loss from flue gases and saving significant energy. The steam in the main steam pipeline is heated by a first electromagnetic superheater, which uses electricity to rapidly superheat low-pressure wet saturated steam to low-pressure dry saturated steam, raising the steam temperature to above 180-200°C. This first electromagnetic superheater heats the inlet steam for the corrugating and pressure rollers of the single-facer machine, which have high temperature requirements during production. This superheating heat is then converted from low-temperature wet saturated steam to dry saturated steam, increasing the inlet steam temperature and energy density. The control system intelligently and rapidly replenishes energy (both increasing and decreasing the temperature) for the key heat-consuming components of the corrugating machine (corrugating and pressure rollers) using an electromagnetic energy replenishment system based on production data such as machine speed, material, and width. The steam supply pressure to the preheating cylinders for the base and cardboard paper can be reduced to a minimum, reducing steam reactive power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the system structure of the present utility model.

[0019] In the figure: 1 - main steam pipe, 2 - return water main pipe, 3 - first branch steam pipe, 4 - second branch steam pipe, 5 - first return water pipe, 6 - second return water pipe, 7 - first electromagnetic superheater device, 8 - return water tank, 9 - second electromagnetic superheater device, 11 - secondary heating pipe, 12 - corrugated paper heating width orifice plate, 13 - steam distributor, 14 - branch pipe, 15 - corrugated roller, 16 - drain pipe, 17 - high-temperature drain pump, 18 - drain control valve, 19 - pressure sensor, 20 - steam inlet control valve, 21 - steam inlet flow control valve, 22 - corrugated paper steam inlet control valve, 23 - corrugated paper drainage control valve, 24 - steam trap, 25 - secondary steam outlet control valve. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that any directional terms such as "up," "down," "left," "right," "front," "back," "inside," and "outside" that appear or will appear in this document are based solely on the accompanying drawings and are not intended to limit the present invention.

[0021] See Figure 1, an electromagnetic heating and energy replenishing system for a corrugated paper single-facer machine, comprising a main steam pipe 1, a return water main pipe 2, a first branch steam pipe 3 for heating corrugated paper, a second steam pipe 4 for heating corrugated rollers, a first return water pipe 5 for heating return water for corrugated paper, and a second return water pipe 6 for heating return water for corrugated rollers. The first branch steam pipe 3 and the second branch steam pipe 4 are connected to the main steam pipe 1, the first return water pipe 5 and the second return water pipe 6 are connected to the return water main pipe 2, a first electromagnetic superheater device 7 is arranged between the second branch steam pipe 4 and the corrugated roller, the end of the return water main pipe 2 is connected to the return water tank 8, the outlet of the return water tank 8 is connected to the second electromagnetic superheater device 9 through a pipeline, and the outlet of the second electromagnetic superheater device 9 is connected to the corrugated paper heating door width orifice plate 12 through a secondary heating pipe 11.

[0022] Furthermore, the first electromagnetic superheater device 7 is connected to the steam distributor 13 through a pipeline, and the steam distributor 13 is connected to the corrugating roller 15 through a plurality of branch pipes 14 .

[0023] Furthermore, the bottom of the return water tank 8 is connected to a high-temperature drainage pump 17 through a drainage pipe 16 , and a drainage control valve 18 is provided at the drainage pipe of the high-temperature drainage pump 17 .

[0024] Furthermore, the steam distributor 13 is provided with a pressure sensor 19 , which is used to monitor the pressure in the steam distributor 13 to prevent the pressure of the steam distributor 13 from getting out of control.

[0025] Furthermore, a steam inlet control valve 20 and a steam inlet flow control valve 21 are provided on the pipeline between the main steam pipe 1 and the first electromagnetic superheater device 7. The steam inlet flow control valve 21 can control the steam intake amount for precise control.

[0026] Furthermore, a paper steam inlet control valve 22 is provided on the first branch steam pipe 3 .

[0027] Furthermore, a paper drain control valve 23 is provided on the first return water pipe 5 .

[0028] Furthermore, a drain valve 24 is provided on the second water return pipe 6 .

[0029] Furthermore, a secondary steam outlet control valve 25 is provided in the pipeline between the return water tank 8 and the second electromagnetic superheater device 9 .

[0030] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An electromagnetic heating and energy replenishment system for a single-facer corrugated paper machine, comprising a main steam pipe, a return water pipe, a first branch steam pipe for heating corrugated paper, a second branch steam pipe for heating corrugated rollers, a first return water pipe for returning water from heating corrugated paper, and a second return water pipe for returning water from heating corrugated rollers, wherein the first branch steam pipe and the second branch steam pipe are connected to the main steam pipe, and the first and second return water pipes are connected to the return water pipe. The system is characterized in that: A first electromagnetic superheater device is provided between the second steam pipe and the corrugating roller, the end of the return water main pipe is connected to the return water tank, the return water tank outlet is connected to the second electromagnetic superheater device through a pipeline, and the outlet of the second electromagnetic superheater device is connected to the corrugated paper heating width orifice plate through a secondary heating pipeline.

2. The electromagnetic heating and energy replenishment system for a corrugated paper single-facer according to claim 1, characterized in that: The first electromagnetic superheater device is connected to the steam distributor through a pipeline, and the steam distributor is connected to the corrugated roller through a plurality of branch pipes.

3. The electromagnetic heating and energy replenishment system for a corrugated paper single-facer according to claim 1, characterized in that: The bottom of the return water tank is connected to a high-temperature drainage pump through a drainage pipe, and a drainage control valve is provided at the drainage pipe of the high-temperature drainage pump.

4. The electromagnetic heating and energy replenishment system for a corrugated paper single-facer according to claim 2, characterized in that: The steam distributor is provided with a pressure sensor.

5. The electromagnetic heating and energy replenishment system for a corrugated paper single-facer according to claim 1, characterized in that: A steam inlet control valve and a steam inlet flow control valve are provided on the pipeline between the main steam pipe and the first electromagnetic superheater device.

6. The electromagnetic heating and energy replenishment system for a corrugated paper single-facer according to claim 1, characterized in that: The first branch steam pipe is provided with a paper steam inlet control valve.

7. The electromagnetic heating and energy replenishment system for a corrugated paper single-facer according to claim 1, characterized in that: The first water return pipe is provided with a paper drain control valve.

8. The electromagnetic heating and energy replenishment system for a corrugated paper single-facer according to claim 1, characterized in that: The second water return pipe is provided with a drain valve.

9. The electromagnetic heating and energy replenishment system for a corrugated paper single-facer according to claim 1, characterized in that: A secondary steam outlet control valve is provided in the pipeline between the return water tank and the second electromagnetic superheater device.

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