Electric heating suspended ceiling for wet area of pulp board workshop and paper machine workshop in pulping and papermaking industry
Through the electric heating ceiling system driven by solar photovoltaic power generation, the energy waste and temperature and humidity adjustment problems in the wet area of the pulp and paper industry are solved, and an energy-saving and environmentally friendly ceiling design is achieved.
Patent Information
- Application Number
- CN202422246200.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The ceiling hot air supply system in the wet area of the pulp and paper workshop in the pulp and paper machine workshop in the existing pulp and paper industry consumes a lot of energy and cannot effectively adjust the temperature and humidity.
The electric heating ceiling system powered by solar photovoltaic power generation is used to cooperate with temperature and humidity sensors through the electric heating device to achieve automatic temperature and humidity adjustment, and use renewable energy to reduce vapor consumption.
It realizes automatic adjustment of temperature and humidity, reduces energy consumption and carbon emissions, reduces implementation costs, and meets energy-saving and environmental protection standards.
Smart Images
Figure CN223164093U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a suspended ceiling, in particular to an electric heating suspended ceiling used in a pulp board workshop or a wet area of a paper machine workshop in the pulp and paper industry. Background Art
[0002] In the pulp and paper industry's pulp and board workshops and the wet end of the paper machine shop, most of the water in the pulp is removed as the paper web forms on the wire. Before entering the dryer or hood, further dehydration is required in the press section to increase the paper's density and strength. Typically, the sizing temperature in the pulp and board workshop ranges from 50 to 65°C, and in the paper machine workshop from 45 to 55°C. Consequently, large amounts of high-temperature water vapor are generated above the wire and press tables of the paper machines in these two workshops. When this water vapor rises to the factory roof under the influence of thermal pressure and buoyancy, condensation forms on the inner surface or structure of the roof if the roof temperature is below the indoor air dew point. To prevent condensation and prevent it from dripping onto the wire and affecting product quality, manufacturers install suspended ceilings in the wet end area. Furthermore, they also install a hot air supply system to raise the ceiling surface temperature and remove condensation.
[0003] The currently commonly used ceiling hot air supply system uses low-pressure steam from the workshop process as the heat medium, heats the outdoor air through the steam heating coil, and then uses the blower and air supply duct to send the heated air through the air outlet to the ceiling, heating the ceiling surface and forming a certain air flow on the ceiling surface to prevent wet air from staying on the ceiling surface, thereby achieving the effect of avoiding condensation.
[0004] However, from the perspective of actual implementation, the above-mentioned existing ceiling hot air supply system has the following defects: 1. The system needs to consume steam and fan power during operation. The heated hot air is blown from one short side of the ceiling to the other side and then discharged to the outside through the exhaust fan. It can be seen that the hot air is used for nothing other than preventing condensation, such as not being able to adjust the humidity under the ceiling. 2. The current "dual carbon" policy is being promoted, advocating the reduction of fossil raw material consumption. Usually, the air volume of a single blower is between 20,000 and 50,000 m 3 / h, the power is 15~30kW, and the amount of steam consumed by the ceiling hot air supply system is 1~2 tons / hour. It can be seen that the existing ceiling hot air supply system consumes a lot of energy, and this energy mode is in urgent need of change. Utility Model Content
[0005] The purpose of the utility model is to provide an electric heating ceiling for the wet area of the pulp board workshop and paper machine workshop in the pulp and paper industry, which uses renewable electric energy to prevent condensation and can achieve temperature and humidity regulation, solving the problem of high energy consumption, and is easy to implement and low in cost.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] An electric heating ceiling for the wet section areas of the pulp board workshop and paper machine workshop in the pulp and paper industry, comprising main keels and secondary keels. The main keels are connected to the steel roof structure through hanging parts, and the secondary keels are connected to the main keels through bolt assemblies. The main keels are arranged in parallel with each other, the secondary keels are arranged in parallel with each other, and the main keels and the secondary keels are arranged perpendicular to each other. A ceiling board is fixed between two adjacent secondary keels through a bolt assembly. Among them: an electric heating device is arranged on the inner surface of the ceiling board, and the electric heating device is connected to a solar photovoltaic power generation device, and the solar photovoltaic power generation device supplies power to the electric heating device.
[0008] The advantages of the present utility model are as follows:
[0009] The present utility model changes the energy method of the existing ceiling hot air supply system, utilizes renewable electric energy (solar photovoltaic power generation), meets the requirements of the "General Code for Building Energy Efficiency and Renewable Energy Utilization" (GB55015-2021), solves the problem of steam consumption, reduces carbon emissions, eliminates the installation of a large number of devices such as air supply fans and does not require pipeline layout, reduces the implementation cost and installation workload, prevents condensation, and can adjust the temperature and humidity, and the energy is fully utilized. Description of the Drawings
[0010] Figure 1 is a schematic structural diagram of the first embodiment of the electric heating ceiling of the present utility model.
[0011] Figure 2 is a schematic structural diagram of the low-temperature electric heating plate (shown in partial section).
[0012] Figure 3 is along Figure 1 A partial sectional schematic view (the purlins and main girders are not shown) after cutting along the A-A direction in
[0013] Figure 4 is along Figure 1 A partial sectional schematic view (the purlins and main girders are not shown) after cutting along the B-B direction in
[0014] Figure 5 is a schematic structural diagram of the second embodiment of the electric heating ceiling of the present utility model.
[0015] Figure 6 is along Figure 5 A partial sectional schematic view (the purlins and main girders are not shown) after cutting along the C-C direction in
[0016] Figure 7 is along Figure 5Partial sectional view schematic diagram after cutting in the D-D direction and rotating 180 degrees (purlin and main beam not shown).
[0017] Figure 8 It is a schematic structural diagram of the third embodiment of the electric heating ceiling of the present utility model.
[0018] Fig. 9 It is along Figure 8 Partial sectional view schematic diagram after cutting in the E-E direction and rotating 180 degrees (purlin and main beam not shown).
[0019] Fig.10 It is along Figure 8 Partial sectional view schematic diagram after cutting in the F-F direction and rotating 180 degrees (purlin and main beam not shown). Specific implementation mode
[0020] As Figures 1 to 10 shown, the present utility model provides an electric heating ceiling for the wet part area of the pulp board workshop and paper machine workshop in the pulp and paper industry, including a main keel 21 and a secondary keel 22. The main keel 21 is connected to the steel roof structure through a suspension member 40, and the secondary keel 22 is connected to the main keel 21 through a bolt assembly 23. The main keels 21 are arranged in parallel with each other, the secondary keels 22 are arranged in parallel with each other, the main keel 21 and the secondary keel 22 are arranged perpendicular to each other. A ceiling board 30 made of metal is fixed between two adjacent secondary keels 22 through a bolt assembly 23. Among them: an electric heating device is arranged on the inner surface of the ceiling board 30, and the electric heating device is connected to a solar photovoltaic power generation device, and the solar photovoltaic power generation device supplies power to the electric heating device.
[0021] In actual design, the electric heating device only contacts the ceiling board 30 and does not contact the main keel 21 and the secondary keel 22. Among them: the distance between the electric heating device and the four peripheral edges of the ceiling board 30 is not less than 100 mm to facilitate cable laying.
[0022] As Figures 1 to 4 , the electric heating device can be a plate-shaped low-temperature electric heating plate 50. A plurality of low-temperature electric heating plates 50 are arranged at intervals along the length direction of the secondary keel on each ceiling board 30, and the low-temperature electric heating plates 50 are connected in parallel and can be grouped and controlled. Among them, the low-temperature electric heating plate 50 includes a heating element 51 fixed on the inner surface of the ceiling board 30. The heating element 51 is covered by a heat insulation layer 52, and the thickness of the heat insulation layer 52 is much larger than the thickness of the heating element 51. The outside of the heat insulation layer 52 is wrapped with a housing 53 (made of metal), and the part of the heating element 51 extending out of the heat insulation layer 52 is connected to a wiring terminal 54.
[0023] As Figures 5 to 7, the electric heating device can also be a heating cable device 60. A heating cable device 60 is arranged on each ceiling board 30, and the heating cable devices 60 are connected in parallel and can be grouped for control. Among them, the heating cable device 60 includes a heating cable 61 fixed on the inner surface of the ceiling board 30. The heating cable 61 is arranged in an S shape along the length direction of the secondary keel. The heating cable 61 is covered by a heat insulation layer 62. The thickness of the heat insulation layer 62 is much larger than the thickness of the heating cable 61. The outside of the heat insulation layer 62 is wrapped with a housing 63 (made of metal). The cold end joint 610 of the heating cable 61 extending out of the heat insulation layer 62 is connected to a wiring terminal (not shown in the figure).
[0024] In actual application, the length of each heating cable 61 should not be greater than 100m for easy installation and maintenance. In addition, the cold and hot end joints of the heating cable 61 should have obvious marks.
[0025] Such as Figures 8 to 10 , the electric heating device can also be an electrothermal film device 70. An electrothermal film device 70 is arranged on each ceiling board 30, and the electrothermal film devices 70 are connected in parallel and can be grouped for control. Among them, the electrothermal film device 70 includes an electrothermal film 71 fixed on the inner surface of the ceiling board 30. The electrothermal film 71 is laid along the length direction of the secondary keel. The electrothermal film 71 is covered by a heat insulation layer 72. The thickness of the heat insulation layer 72 is much larger than the thickness of the electrothermal film 71. The outside of the heat insulation layer 72 is wrapped with a housing 73 (made of metal). The cable led out by the electrothermal film 71 extends out of the heat insulation layer 72 and is connected to a wiring terminal (not shown in the figure).
[0026] In actual implementation, the wiring terminals of the electric heating device (the wiring terminals here refer to the wiring terminal 54 of the low-temperature electric heating plate 50, the wiring terminal of the heating cable device 60, and the wiring terminal of the electrothermal film device 70) are connected to the solar photovoltaic power generation device via cables. The solar photovoltaic power generation device is connected to the controller. A temperature sensor (not shown in the figure) is installed on the outer surface of the ceiling board 30. The temperature sensor is used to monitor the temperature of the electric heating ceiling of the present invention in real time. The temperature sensor is connected to the controller. The temperature sensor feeds back the monitored temperature value to the controller. The controller controls the solar photovoltaic power generation device to supply power to the electric heating device in a timely manner according to the set temperature requirement, so that the electric heating device generates heat appropriately to reach the required temperature.
[0027] In actual implementation, the electric heating device is used to heat the ceiling board 30. Through the design of the temperature sensor and the controller, the temperature on the outer surface of the ceiling board 30 can be maintained within a certain temperature range, and the best range is 45°C to 65°C.
[0028] Furthermore, a humidity sensor (not shown in the figure) can also be installed on the outer surface of the ceiling board 30. The humidity sensor is used to monitor the humidity below the electric heating ceiling of the present invention in real time. The humidity sensor is connected to the controller, and the humidity sensor feeds back the monitored humidity value to the controller. The controller controls the solar photovoltaic power generation device to supply power to the electric heating device at the right time according to the set humidity requirement and the current temperature, so that the electric heating device generates heat appropriately to reach the required temperature and humidity.
[0029] Furthermore, the electric heating ceiling of the present invention can also be provided with a current protector (not shown in the figure). The current protector is installed at the power output end of the solar photovoltaic power generation device to automatically cut off the power supply when a fault occurs.
[0030] In the present invention, the steel roof structure includes purlins 11 and main beams 12. The main keel 21 is connected to the purlins 11 through hanging parts 40. The purlins 11 are connected to the main beams 12, and the purlins 11 are perpendicular to the main beams 12, as Figure 1 、 Figure 5 、 Figure 8 shown.
[0031] Figure 1 The figure shows the case where the electric heating device is the low-temperature electric heating plate 50. Figure 1 Fig. is the bottom view of the electric heating ceiling of the present invention as viewed from inside the factory building. Among them, the part indicated by A in the figure is the structure after removing the ceiling board 30, the part indicated by B is the structure after further removing the low-temperature electric heating plate 50 and the secondary keel 22, and the part indicated by C is the structure remaining after further removing the main keel 21.
[0032] Figure 5 The figure shows the case where the electric heating device is the heating cable device 60. Figure 5 Fig. is the bottom view of the electric heating ceiling of the present invention as viewed from inside the factory building. Among them, the part indicated by D in the figure is the structure after removing the ceiling board 30, the part indicated by E is the structure after further removing the heating cable device 60 and the secondary keel 22, and the part indicated by F is the structure remaining after further removing the main keel 21.
[0033] Figure 8 The figure shows the case where the electric heating device is the electric heating film device 70. Figure 8 Fig. is the bottom view of the electric heating ceiling of the present invention as viewed from inside the factory building. Among them, the part indicated by G in the figure is the structure after removing the ceiling board 30, the part indicated by H is the structure after further removing the electric heating film device 70 and the secondary keel 22, and the part indicated by I is the structure remaining after further removing the main keel 21.
[0034] In the present invention, the purlin 11, main beam 12, main purlin 21, secondary purlin 22, ceiling panel 30, hanger 40, and bolt assembly 23 are all existing technologies in this field, among which: the purlin 11 is usually channel steel or C-shaped steel. The ceiling panel 30 is generally designed to be U-shaped and made of stainless steel. The ceiling panel 30 is usually composed of a ceiling panel and two connecting plates for connecting to the secondary purlin 22. The ceiling panel can be flat, etc., and can be laid horizontally or with a slope, without limitation. The bolt assembly 23 includes bolts, nuts and washers, and the hanger 40 usually includes long bolts and matching nuts. The cross-sectional shapes of the main purlin 21 and the secondary purlin 22 are not limited, and the secondary purlin 22 needs to be grounded for protection.
[0035] In this utility model, the solar photovoltaic power generation device, temperature sensor, humidity sensor, and current protector are existing devices in the art, and the controller is well known in the art and will not be described in detail here. The solar photovoltaic power generation device is a device that uses renewable energy, solar energy, to generate electricity, and its structure is not limited.
[0036] like Figure 3 、 Figure 6 and Fig. 9 The figure shows the up and down directions, the secondary keel length direction and the main keel length direction defined for the present invention, wherein the up and down directions are vertical directions, the secondary keel length direction and the main keel length direction are at the same level and perpendicular to each other.
[0037] The electric heating ceiling of this utility model does not belong to heating equipment and does not bear the heat load of the factory. The electrical safety performance and mechanical performance of the electric heating device therein should comply with the requirements of relevant national standards and specifications, and its waterproof and dustproof performance should be no less than IP55.
[0038] The advantages of the utility model are:
[0039] This utility model changes the energy mode of the existing ceiling hot air supply system, utilizes renewable electric energy (solar photovoltaic power generation), meets the requirements of the "General Specification for Energy Conservation and Renewable Energy Utilization in Buildings" (GB55015-2021), solves the steam consumption problem, reduces carbon emissions, eliminates the installation of a large number of equipment such as blowers and does not require pipeline layout, reduces implementation costs and installation workload, prevents condensation, and realizes temperature and humidity regulation, and energy is fully utilized.
[0040] The above is a preferred embodiment of the present invention and the technical principles used therein. For those skilled in the art, any obvious changes such as equivalent transformations, simple replacements, etc. based on the technical solution of the present invention, without departing from the spirit and scope of the present invention, shall fall within the scope of protection of the present invention.
Claims
1. An electrothermal ceiling for the wet end areas of the pulp board workshop and paper machine workshop in the pulp and paper industry, characterized in that, It includes a main keel and a secondary keel. The main keel is connected to the steel roof structure through a suspension member, and the secondary keel is connected to the main keel through a bolt assembly. Each of the main keels is arranged in parallel, each of the secondary keels is arranged in parallel, and the main keel and the secondary keel are arranged perpendicular to each other. A ceiling board is fixed between two adjacent secondary keels through a bolt assembly. Among them: an electric heating device is arranged on the inner surface of the ceiling board, and the electric heating device is connected to a solar photovoltaic power generation device, and the solar photovoltaic power generation device supplies power to the electric heating device.
2. The electric heating ceiling for the wet end area of the pulp board workshop and paper machine workshop in the pulp and paper industry as described in claim 1, characterized in that, The electric heating device only contacts the ceiling board and does not contact the main keel and the secondary keel. Among them: the distance between the electric heating device and the four peripheral edges of the ceiling board is not less than 100 mm.
3. The electric heating ceiling for the wet end areas of the pulp board workshop and paper machine workshop in the pulp and paper industry as claimed in claim 2, characterized in that, The electric heating device is a low-temperature electric heating plate. A plurality of the low-temperature electric heating plates are arranged at intervals along the length direction of the secondary keel on each ceiling board, and the low-temperature electric heating plates are connected in parallel. Among them, the low-temperature electric heating plate includes a heating element fixed on the inner surface of the ceiling board, the heating element is covered by a heat insulation layer, an outer shell is wrapped outside the heat insulation layer, and the part of the heating element extending out of the heat insulation layer is connected to a terminal.
4. The electric heating ceiling for the wet end areas of the pulp board workshop and paper machine workshop in the pulp and paper industry as claimed in claim 2, wherein, The electric heating device is a heating cable device. One heating cable device is arranged on each ceiling board, and the heating cable devices are connected in parallel. Among them, the heating cable device includes a heating cable fixed on the inner surface of the ceiling board, the heating cable is arranged in an S shape along the length direction of the secondary keel, the heating cable is covered by a heat insulation layer, an outer shell is wrapped outside the heat insulation layer, and the cold end joint of the heating cable extending out of the heat insulation layer is connected to a terminal.
5. The electric heating ceiling for the wet part area of the pulp board workshop and paper machine workshop in the pulp and paper industry as described in claim 2, characterized in that, The electric heating device is an electric heating film device. One electric heating film device is arranged on each ceiling board, and the electric heating film devices are connected in parallel. Among them, the electric heating film device includes an electric heating film fixed on the inner surface of the ceiling board, the electric heating film is laid along the length direction of the secondary keel, the electric heating film is covered by a heat insulation layer, an outer shell is wrapped outside the heat insulation layer, and the cable led out by the electric heating film extends out of the heat insulation layer and is connected to a terminal.
6. The electric heating ceiling for the wet end area of the pulp board workshop and paper machine workshop in the pulp and paper industry as described in claim 3 or 4 or 5, characterized in that, The terminal is connected to the solar photovoltaic power generation device through a cable. The solar photovoltaic power generation device is connected to a controller. A temperature sensor is installed on the outer surface of the ceiling board, and the temperature sensor is connected to the controller.
7. The electric heating ceiling for the wet end areas of the pulp board workshop and paper machine workshop in the pulp and paper industry as claimed in claim 6, wherein A humidity sensor is installed on the outer surface of the ceiling board, and the humidity sensor is connected to the controller.
8. The electric heating ceiling for the wet end area of the pulp board workshop and paper machine workshop in the pulp and paper industry as described in claim 6, characterized in that, The electric heating ceiling is also provided with a current protector, and the current protector is installed at the power output end of the solar photovoltaic power generation device.
9. The electric heating ceiling for the wet end area of the pulp board workshop and paper machine workshop in the pulp and paper industry as described in claim 1, characterized in that, The steel roof structure includes purlins and main beams. The main keel is connected to the purlins through the suspension member, the purlins are connected to the main beams, and the purlins and the main beams are perpendicular to each other.