CN114777329B - External constant temperature heating automatic control system of head box - Google Patents
External constant temperature heating automatic control system of head box Download PDFInfo
- Publication number
- CN114777329B CN114777329B CN202210342960.0A CN202210342960A CN114777329B CN 114777329 B CN114777329 B CN 114777329B CN 202210342960 A CN202210342960 A CN 202210342960A CN 114777329 B CN114777329 B CN 114777329B
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- water
- pipe
- box
- pulp
- original pulp
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
Abstract
The invention discloses an external constant-temperature heating automatic control system of a head box, which comprises a water tank, wherein a heater and a temperature sensor are arranged on the water tank, the heater is connected with the temperature controller through a signal wire, the temperature sensor is also connected with the temperature controller through a signal wire, a main water inlet pipe is arranged on the side of the water tank, a pressure relief pipe is also arranged on one side of the main water inlet pipe, a pressure relief valve is arranged on the pressure relief pipe, a pressure transmitter is also arranged on the water tank, the pressure transmitter is connected with the pressure relief valve through the signal wire, a main water return pipe and a clear water inlet pipe are arranged at the upper end of the water tank, an automatic water supplementing valve is arranged on the clear water inlet pipe, and a manhole cover is also arranged at the upper end of the water tank; the invention has simple structure and novel design, and the temperature can be set by self-defining the temperature, the flow and the pressure according to the slurry temperature in different flow slurry tanks by arranging the common water tank constant-temperature heating control system, thereby solving the problem of deformation of the lip plate of the flow slurry tank caused by the temperature difference of the slurry temperature, and being more beneficial to production in the actual use process.
Description
Technical Field
The invention relates to the technical field of headboxes, in particular to an external constant-temperature heating automatic control system of a headbox.
Background
Headbox is one of the important equipment of paper machines and is a critical part of modern paper machines. The structure and the performance of the paper play a decisive role in the formation of the paper and the quality of the paper;
the constant temperature heating devices of the bottom layer headbox, the core layer headbox and the surface layer headbox in the prior art are respectively and independently built in, and the heater, the water pump, the motor, the control panel, the regulator and the like are respectively and independently configured, so that the separation operation is complex, and the lip plates of the three headboxes are easily deformed due to the temperature difference of the pulp temperature, so that a series of problems are caused.
Disclosure of Invention
The invention aims to provide an external constant-temperature heating automatic control system of a headbox, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an external constant temperature heating automatic control system of head box, includes the water tank, be equipped with heater and temperature sensor on the water tank, the heater is being connected temperature controller through the signal line, temperature sensor is also being connected temperature controller through the signal line, the side of water tank is equipped with total inlet tube, one side of total inlet tube still is equipped with the pressure release pipe, be equipped with the relief valve on the pressure release pipe, still be equipped with pressure transmitter on the water tank, pressure transmitter is connected with the relief valve through the signal line, the water tank upper end is equipped with total wet return and clear water inlet tube, be equipped with automatic water supplementing valve on the clear water inlet tube, the water tank upper end still is equipped with the manhole cover.
Preferably, the other end of the main water inlet pipe is respectively connected with a first branch pipe, a second branch pipe and a third branch pipe, pressure control valves are arranged on the first branch pipe, the second branch pipe and the third branch pipe, the first branch pipe is connected with a bottom layer headbox, the second branch pipe is connected with a core layer headbox, and the third branch pipe is connected with a surface layer headbox.
Preferably, the other end of the total water return pipe is respectively connected with a first water return pipe, a second water return pipe and a third water return pipe, water return control valves are arranged on the first water return pipe, the second water return pipe and the third water return pipe, the first water return pipe is connected with a bottom layer flow box, the second water return pipe is connected with a core layer flow box, and the third water return pipe is connected with a surface layer flow box.
Preferably, the operation mode of the automatic control system for external constant temperature heating of the headbox comprises the following steps:
A. firstly, a pressure control valve on a first shunt tube of a bottom layer pulp box is opened, primary pulp in the bottom layer pulp box enters a total water inlet tube from the first shunt tube, then the primary pulp enters a water tank through the total water inlet tube, in the process of entering the water tank, if the pressure difference of the total water inlet tube is unstable, the pressure transmitter can be adjusted to control the opening or closing of a pressure release valve, so that the primary pulp stably enters the water tank, if the primary pulp entering the water tank exceeds a limit line in the water tank, a water return control valve on a first water return tube can be opened, the redundant primary pulp is returned to the bottom layer pulp box, a controller is opened at the moment, the heating temperature is set, the primary pulp is heated, a worker can observe the reaction condition of the primary pulp in the water tank in real time through a manhole cover in the heating process, and select whether to open an automatic water supplementing valve to add a proper amount of clear water according to actual conditions, and after constant temperature heating is finished, the primary pulp flows out of a mesh cloth from the water tank, and is uniformly paved on the bottom layer of pulp;
B. then, a pressure control valve on a second shunt tube of the core layer pulp box is opened, so that the original pulp in the core layer pulp box enters a total water inlet tube from the second shunt tube, then the original pulp enters a water tank through the total water inlet tube, in the process of entering the water tank, if the pressure difference of the total water inlet tube is unstable, the opening or closing of a pressure release valve is controlled by adjusting a pressure transmitter, so that the original pulp stably enters the water tank, if the original pulp entering the water tank exceeds a limit line in the water tank, a water return control valve on a second water return tube can be opened, the redundant original pulp is returned to the core layer pulp box, a controller is opened at the moment, the heating temperature is set, the original pulp is heated, a worker can observe the reaction condition of the original pulp in the water tank in real time through a manhole cover in the heating process, and select whether an automatic water supplementing valve is opened or not according to actual conditions, after constant temperature heating is finished, the original pulp flows out of the water tank and is uniformly paved on a bottom layer, so that a core layer of pulp is formed;
C. and finally, opening a pressure control valve on a third shunt pipe of the surface layer headbox to enable the original pulp in the surface layer headbox to enter a total water inlet pipe from the third shunt pipe, then enabling the original pulp to enter a water tank through the total water inlet pipe, controlling the opening or closing of a pressure release valve through adjusting a pressure transmitter in the process of entering the water tank if the pressure difference of the total water inlet pipe is unstable, enabling the original pulp to stably enter the water tank, opening a backwater control valve on a third backwater pipe if the original pulp entering the water tank exceeds a limit line in the water tank, reflowing the excessive original pulp into the surface layer headbox, opening a controller and setting a heating temperature at the moment, heating the original pulp, enabling a worker to observe the reaction condition of the original pulp in the water tank in real time through a manhole cover in the heating process, selecting whether to open an automatic water supplementing valve to add a proper amount of clear water according to actual conditions, and after constant-temperature heating is completed, enabling the original pulp to flow out of the water tank and uniformly spread on a core layer to form a surface layer of the pulp.
Compared with the prior art, the invention has the beneficial effects that: the invention has simple structure and novel design, and the common water tank constant temperature heating control system is arranged outside the bottom layer headbox, the core layer headbox and the surface layer headbox, so that the temperature can be set by self-defining the temperature, the flow and the pressure according to the pulp temperature in different headboxes, and the problem of deformation of the lip plate of the headbox caused by the temperature difference of the pulp temperature is solved, thereby effectively avoiding a series of problems of long waterline, difficult control of the temperature, pulp hanging of the lip plate, pulp jumping, banner difference and the like caused by the deformation of the lip plate, and being more beneficial to production in the actual use process.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a technical solution: an automatic constant temperature heating control system for an external headbox comprises a water tank 1, wherein a heater 11 and a temperature sensor 12 are arranged on the water tank 1, the heater 11 is connected with a temperature controller 13 through a signal wire, thus a specific heating temperature can be set through the temperature controller, the temperature sensor 13 in the water tank is also connected with the temperature controller 13 through the signal wire, thus the monitored water tank temperature can be fed back to the temperature controller in real time, a total water inlet pipe 14 is arranged on the side edge of the water tank 1, in order to avoid pressure difference generated by the total water inlet pipe 14 in the conveying process, a pressure relief pipe 141 is also arranged on one side of the total water inlet pipe 14, the pressure relief pipe 141 is provided with a pressure relief valve 142 for controlling the pressure of primary pulp conveyed by the total water inlet pipe to be opened or closed, the water tank 1 is provided with a pressure transmitter 15 for monitoring the pressure of primary pulp conveyed by the total water inlet pipe in real time, the pressure transmitter 15 is connected with the pressure relief valve 142 through a signal wire, when the pressure transmitter detects that the pressure in the water tank is abnormal, the pressure relief valve can be opened or closed for pressure relief, the upper end of the water tank 1 is provided with a total water return pipe 16 and a clear water inlet pipe 17, the clear water inlet pipe 17 is provided with an automatic water supplementing valve 171 for controlling the opening and closing of the water return pipe, and the upper end of the water tank 1 is also provided with a manhole cover 18 for observing the condition of the water tank;
the other end of the main water inlet pipe 14 is respectively connected with a first branch pipe 21, a second branch pipe 31 and a third branch pipe 41, the first branch pipe 21, the second branch pipe 31 and the third branch pipe 41 are respectively provided with a pressure control valve 5, the first branch pipe 21 is connected with a bottom layer pulp box 2, the second branch pipe 31 is connected with a core layer pulp 3, and the third branch pipe 41 is connected with a surface layer pulp box 4;
the other end of the total water return pipe 16 is respectively connected with a first water return pipe 22, a second water return pipe 32 and a third water return pipe 42, wherein water return control valves 6 are respectively arranged on the first water return pipe 22, the second water return pipe 32 and the third water return pipe 42, the first water return pipe 22 is connected with the bottom layer headbox 2, the second water return pipe 32 is connected with the core layer headbox 3, and the third water return pipe 42 is connected with the surface layer headbox 4.
In this embodiment, the operation mode of the automatic control system for external constant temperature heating of the headbox includes the following steps:
A. firstly, a pressure control valve 5 on a first branch pipe 21 of a bottom layer pulp box 2 is opened, so that raw pulp in the bottom layer pulp box 2 enters a total water inlet pipe 14 from the first branch pipe 21, then the raw pulp enters a water tank 1 through the total water inlet pipe 14, if the pressure difference of the total water inlet pipe 14 is unstable in the process of entering the water tank 1, the pressure transmitter 15 can be adjusted to control the opening or closing of a pressure release valve 5, so that the raw pulp stably enters the water tank, if the raw pulp entering the water tank 1 exceeds a limit line in the water tank 1, a water return control valve 6 on a first water return pipe 22 can be opened, the redundant raw pulp is returned to the bottom layer pulp box 2, at the moment, a temperature controller 13 is opened and a heating temperature is set, the raw pulp is heated, a worker can observe the reaction condition of the raw pulp in the water tank through a person 18 in real time in the heating process, and select whether an automatic water supplementing valve 171 is opened or not to add a proper amount of clear water according to actual conditions, after constant temperature heating is finished, the raw pulp flows out of the water tank 1, and a paper pulp net cloth is evenly spread on a bottom layer is formed;
B. then, the pressure control valve 5 on the second shunt tube 31 of the core layer pulp box 3 is opened, so that the original pulp in the core layer pulp box 3 enters the total water inlet tube 14 from the second shunt tube 31, then the original pulp enters the water box 1 through the total water inlet tube 14, if the pressure difference of the total water inlet tube 14 is unstable in the process of entering the water box 1, the pressure transmitter 15 is adjusted to control the opening or closing of the pressure release valve 5, so that the original pulp stably enters the water box 1, if the original pulp entering the water box 1 exceeds the limit line in the water box 1, the water return control valve 6 on the second water return tube 32 can be opened, the redundant original pulp is returned to the core layer pulp box 3, at the moment, the controller 13 is opened and the heating temperature is set, the original pulp is heated, in the heating process, a worker can observe the reaction condition of the original pulp in the water box in real time through the human body 18, and select whether the automatic water supplementing valve 171 is opened to add a proper amount of clear water according to the actual condition, after the constant temperature heating is finished, the original pulp flows out of the water box 1, and is uniformly paved on the bottom layer, and the core layer is formed;
C. finally, the pressure control valve 5 on the third shunt tube 41 of the surface layer headbox 4 is opened, so that the original pulp in the surface layer headbox 4 enters the total water inlet tube 14 from the third shunt tube 41, then the original pulp enters the water tank 1 through the total water inlet tube 14, if the pressure difference of the total water inlet tube 14 is unstable in the process of entering the water tank 1, the pressure transmitter 15 is adjusted to control the opening or closing of the pressure release valve 5, so that the original pulp stably enters the water tank 1, if the original pulp entering the water tank 1 exceeds the limit line in the water tank 1, the water return control valve 6 on the third water return tube 42 can be opened, the redundant original pulp is returned to the surface layer headbox 4, the temperature controller 13 is opened at the moment, the heating temperature is set, the original pulp is heated, a worker can observe the reaction condition of the original pulp in the water tank 1 in real time through the manhole cover 18 in the heating process, and select whether to open the automatic water supplementing valve 171 is added with a proper amount according to the actual condition, after the constant temperature heating is completed, the original pulp flows out of the water tank 1 and is uniformly paved on the core layer, and the surface layer is formed.
In summary, the invention has simple structure and novel design, and the common water tank constant temperature heating control system is arranged outside the bottom layer headbox, the core layer headbox and the surface layer headbox, so that the temperature can be set according to the slurry temperatures in different headboxes, the self-defined temperature, flow and pressure can be set, the problem of deformation of the lip plate of the headbox caused by the temperature difference of the slurry temperatures is solved, and a series of problems of long waterline, difficult temperature control, slurry hanging of the lip plate, slurry jumping, banner difference and the like caused by the deformation of the lip plate are effectively avoided, and the invention is more beneficial to production in the actual use process.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. An external constant temperature heating automatic control system of head box, includes water tank (1), its characterized in that: the water tank (1) is provided with a heater (11) and a temperature sensor (12), the heater (11) is connected with a temperature controller (13) through a signal line, the temperature sensor (12) is also connected with the temperature controller (13) through a signal line, the side edge of the water tank (1) is provided with a total water inlet pipe (14), one side of the total water inlet pipe (14) is also provided with a pressure relief pipe (141), the pressure relief pipe (141) is provided with a pressure relief valve (142), the water tank (1) is also provided with a pressure transmitter (15), the pressure transmitter (15) is connected with the pressure relief valve (142) through a signal line, the upper end of the water tank (1) is provided with a total water return pipe (16) and a clear water inlet pipe (17), the clear water inlet pipe (17) is provided with an automatic water supplementing valve (171), and the upper end of the water tank (1) is also provided with a manhole cover (18);
the other end of the main water inlet pipe (14) is respectively connected with a first branching pipe (21), a second branching pipe (31) and a third branching pipe (41), the first branching pipe (21), the second branching pipe (31) and the third branching pipe (41) are respectively provided with a pressure control valve (5), the first branching pipe (21) is connected with a bottom layer headbox (2), the second branching pipe (31) is connected with a core layer headbox (3), and the third branching pipe (41) is connected with a surface layer headbox (4);
the other end of the total water return pipe (16) is respectively connected with a first water return pipe (22), a second water return pipe (32) and a third water return pipe (42), water return control valves (6) are arranged on the first water return pipe (22), the second water return pipe (32) and the third water return pipe (42), the first water return pipe (22) is connected with a bottom layer headbox (2), the second water return pipe (32) is connected with a core layer headbox (3), and the third water return pipe (42) is connected with a surface layer headbox (4);
the operation mode of the automatic control system for the external constant-temperature heating of the headbox comprises the following steps:
A. firstly, a pressure control valve (5) on a first shunt pipe (21) of a bottom layer pulp box (2) is opened, so that the original pulp in the bottom layer pulp box enters a total water inlet pipe (14) from the first shunt pipe (21), then the original pulp enters a water box (1) through the total water inlet pipe (14), in the process of entering the water box (1), if the pressure difference of the total water inlet pipe (14) is unstable, the pressure transmitter (15) can be adjusted to control the opening or closing of a pressure relief valve (142), so that the original pulp stably enters the water box, if the original pulp entering the water box (1) exceeds a limit line in the water box (1), a return water control valve (6) on a first return pipe (22) can be opened, the redundant original pulp is returned to the bottom layer pulp box (2), at the moment, a temperature controller (13) is opened and the heating temperature is set, the original pulp is heated, in the heating process, workers can observe the reaction condition of the original pulp in the water box in real time through a manhole cover (18), and select whether to open an automatic water valve (171) to add a proper amount according to the actual condition, after the constant temperature heating is completed, the original pulp uniformly flows out of the water box, and the net cloth is paved on the bottom layer is formed;
B. then, a pressure control valve (5) on a second shunt pipe (31) of the core layer flow box (3) is opened, so that the original pulp in the core layer flow box enters a total water inlet pipe (14) from the second shunt pipe (31), then the original pulp enters the water box (1) through the total water inlet pipe (14), in the process of entering the water box (1), if the pressure difference of the total water inlet pipe (14) is unstable, the pressure transmitter (15) is also regulated to control the opening or closing of a pressure release valve (142), and therefore, the original pulp stably enters the water box (1), if the original pulp entering the water box (1) exceeds a limit line in the water box (1), a return water control valve (6) on a second water return pipe (32) can be opened, the redundant original pulp is returned to the core layer flow box (3), at the moment, a temperature controller (13) is opened, the original pulp is heated, a worker can observe the reaction condition of the original pulp in the water box in real time through a manhole cover (18) in the heating process, and whether an automatic water supplementing valve (171) is opened to be added into a constant temperature according to actual conditions, the original pulp is uniformly paved in the water box, and the bottom layer is formed;
C. finally, a pressure control valve (5) on a third shunt pipe (41) of the surface layer pulp box (4) is opened, so that the original pulp in the surface layer pulp box enters the total water inlet pipe (14) from the third shunt pipe (41), then the original pulp enters the water box (1) through the total water inlet pipe (14), in the process of entering the water box (1), if the pressure difference of the total water inlet pipe (14) is unstable, the pressure transmitter (15) is regulated to control the opening or closing of the pressure release valve (142), and accordingly the original pulp stably enters the water box (1), if the original pulp entering the water box (1) exceeds a limit line in the water box (1), a return water control valve (6) on a third water return pipe (42) can be opened, the redundant original pulp is returned to the surface layer pulp box (4), at the moment, a temperature controller (13) is opened, the original pulp is heated, a worker can observe the reaction condition of the original pulp in the water box (1) in real time through a manhole cover (18) in the heating process, and whether an automatic water supplementing valve (171) is opened according to actual conditions or not is selected, and a proper amount of the original pulp is uniformly paved on the surface layer after the original pulp is heated, and the surface layer is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210342960.0A CN114777329B (en) | 2022-04-02 | 2022-04-02 | External constant temperature heating automatic control system of head box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210342960.0A CN114777329B (en) | 2022-04-02 | 2022-04-02 | External constant temperature heating automatic control system of head box |
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| Publication Number | Publication Date |
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| CN114777329A CN114777329A (en) | 2022-07-22 |
| CN114777329B true CN114777329B (en) | 2023-07-28 |
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| CN202210342960.0A Active CN114777329B (en) | 2022-04-02 | 2022-04-02 | External constant temperature heating automatic control system of head box |
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