Fuel gas energy-saving system of chopped yarn vibration drying oven

Abstract

The utility model discloses a fuel gas energy-saving system of a chopped yarn vibration oven. The fuel gas energy-saving system comprises the chopped yarn vibration oven, a chopped waste gas subsystem, a chopped combustion subsystem and a control subsystem, the chopped waste gas subsystem comprises a waste gas pipe network, dust removal equipment, waste gas purification equipment, a heat recovery pipeline, a fan and a heat exchanger; the short-cut combustion subsystem comprises a combustion fan, a low-temperature combustor, a cabinet, an air return port, a combustion chamber, an air mixing chamber, a high-temperature fan and an air supply port. The combustion-supporting air quantity is accurately controlled, the combustion efficiency is improved, and gas waste is reduced; high-temperature and low-temperature waste air is introduced for shunting and clean waste air is recycled, so that the energy loss in the heat exchange process is reduced; by introducing the efficient heat exchange device, the temperature of combustion-supporting air is increased, the temperature of waste air is reduced, and energy consumption is reduced; an intelligent integrated system is introduced, and automatic and digital management and control are achieved through a temperature control and energy management system.

Description

Technical Field

[0001] The utility model relates to the technical field of oven systems, and particularly relates to a gas energy-saving system for a chopped strand vibrating oven. Background Art

[0002] The existing gas systems of glass fiber chopped strand vibrating ovens have the following disadvantages: a. The burner uses a fire row type, and the combustion-supporting air and the burner do not have independent and precise control. Due to the excessive combustion-supporting air volume and too fast wind speed, the combustion reaction time is insufficient, resulting in incomplete combustion of gas and energy waste; b. The moisture discharge and cooling discharge of the waste gas system are combined and discharged by one fan. The low-temperature cooling air and the high-temperature moisture discharge air are in convection, which reduces the discharge temperature and results in less space for waste heat utilization at the end; c. The relevance of waste heat utilization, combustion-supporting air, oven headroom, temperature management, etc. is not strong, resulting in low overall energy utilization rate required for product drying and surface treatment. Content of the Utility Model

[0003] In order to solve the above problems, the utility model provides a gas energy-saving system for a chopped strand vibrating oven, which includes a chopped strand vibrating oven, a chopped waste gas subsystem, a chopped combustion subsystem, and a control subsystem;

[0004] The chopped strand vibrating oven is used for quickly drying and film-forming the glass fiber chopped strands; the chopped waste gas subsystem is used for controlling the gas circulation inside the energy-saving system; the chopped combustion subsystem is used for providing the temperature and energy required for baking the chopped products; the control subsystem is used for monitoring and controlling the operation of the energy-saving system.

[0005] Further, the chopped waste gas subsystem specifically includes: a waste gas pipeline network, a dust removal device, a waste gas purification device, a heat recovery pipeline, a fan, and a heat exchanger;

[0006] The waste gas pipeline network, the dust removal device, the waste gas purification device, the heat recovery pipeline, the fan, and the heat exchanger are all connected in series through pipelines; the heat exchanger converts the heat of the fresh air to generate hot air, which enters the chopped combustion subsystem to generate high-temperature hot air and then enters the chopped strand vibrating oven. After passing through the chopped strand vibrating oven, the high-temperature hot air enters the dust removal device through the heat recovery pipeline. The cooling air enters the waste gas pipeline network and is discharged after passing through the chopped strand vibrating oven. After passing through the dust removal device and the waste gas purification device, part of the high-temperature hot air enters the chopped strand vibrating oven, and the other part enters the waste gas pipeline network and is discharged after entering the heat exchanger.

[0007] Further, the dust removal device is specifically composed of a cyclone dust collector and a water curtain dust collector; the waste gas purification device is a cage type dust collector.

[0008] Further, the fan is specifically composed of a waste gas exhaust fan, a combustion-supporting fan, a drying fan, a curing fan, and a cooling fan.

[0009] Furthermore, it also includes air valves for controlling the gas flow rate; specifically, the air valves include: fresh air valve, drying air valve, curing air valve, cooling air valve, and waste exhaust air valve.

[0010] Furthermore, the chopped fiber combustion subsystem specifically includes: combustion-supporting fan, low-temperature burner, cabinet, air return opening, combustion chamber, air mixing chamber, high-temperature fan, and air supply opening;

[0011] The cabinet is installed at the front end of the hot air generator set or independently outside the hot air generator set. The combustion-supporting fan is installed above the low-temperature burner, and the combustion-supporting fan is connected to the combustion chamber through a pipeline; the low-temperature burner is installed at the rear side inside the cabinet and connected to the combustion chamber; the combustion chamber is located at the front side inside the air mixing chamber and connected to the low-temperature burner; an air return opening is provided above the air mixing chamber, and a high-temperature fan is provided on the right side of the air mixing chamber; the high-temperature fan is used to transmit the high-temperature air through the air supply opening;

[0012] The hot air generator set is specifically composed of a combustion-supporting fan, a low-temperature burner, an air return opening, a combustion chamber, an air mixing chamber, a high-temperature fan, and an air supply opening.

[0013] Furthermore, the control subsystem includes: a data acquisition module, a data analysis and processing module, a control execution module, and a monitoring and warning module;

[0014] The data acquisition module is used to collect various data within the energy-saving system; the data analysis and processing module is used to analyze and process the collected data; the control execution module is used to control based on the processed data; the monitoring and warning module is used to monitor the operation of the energy-saving system and give warnings for abnormal situations.

[0015] Furthermore, the data collected by the data acquisition module includes: fresh air temperature, ignition and operation signals of the chopped fiber combustion subsystem, burner outlet temperature, waste exhaust air valve opening, cooling air valve opening, fresh air valve opening, and drying air valve.

[0016] Furthermore, the abnormal situations specifically include: equipment failure, too small or too large air valve opening, and device air leakage.

[0017] Furthermore, the hot air temperature range in the hot air generator set is 100°C to 150°C.

[0018] The present invention provides a chopped fiber vibration oven gas energy-saving system, which has the following beneficial effects:

[0019] The utility model realizes precise control of the combustion air volume, which is beneficial to improving the combustion efficiency and reducing gas waste; introducing the diversion of high and low temperature air and the reuse of clean exhaust gas is beneficial to reducing the energy loss in the heat exchange process; introducing a high-efficiency heat exchange device is beneficial to increasing the temperature of the combustion-supporting air, reducing the temperature of the exhaust gas, and reducing energy consumption; introducing an intelligent integration system to achieve automatic and digital control through a temperature control and energy management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 is a schematic diagram of the system structure provided by the present utility model;

[0022] Figure 2 is a schematic diagram of the short-cut exhaust gas subsystem structure provided by the present utility model;

[0023] Figure 3 is a schematic diagram of the short-cut combustion subsystem structure provided by the present utility model.

[0024] In the figure, 1 is a combustion-supporting fan; 2 is a cabinet; 3 is a low-temperature burner; 4 is a return air port; 5 is a combustion chamber; 6 is a mixing chamber; 7 is a high-temperature fan; 8 is a supply air port; 9 is a cyclone dust collector; 10 is a cage dust collector; 11 is a heat exchanger; 12 is an exhaust fan; 13 is a water curtain dust collector; 14 is an exhaust air valve; 15 is a fresh air valve; 16 is a drying air valve; 17 is a curing air valve; 18 is a drying fan; 19 is a curing fan; 20 is a cooling air valve; 21 is a cooling fan. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] The following will detail the implementation method of the present utility model with reference to the drawings. What is described is only some embodiments, not all embodiments. For the sake of clarity, the representations and descriptions unrelated to the present utility model are omitted in the drawings and the description.

[0027] In order to have a clearer understanding of the technical features, objectives, and beneficial effects of the present utility model, the following detailed description is provided for the technical solution of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments, and should not be construed as a limitation on the scope of implementation of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0028] As Figure 1 shown, the present utility model provides a chopped strand vibration oven gas energy-saving system, which includes a chopped strand vibration oven, a chopped waste gas subsystem, a chopped combustion subsystem, and a control subsystem.

[0029] The chopped strand vibration oven is used for quickly drying and film-forming the glass fiber chopped strands; the chopped waste gas subsystem is used to control the gas circulation inside the energy-saving system; the chopped combustion subsystem is used to provide the temperature and energy required for baking the chopped products; the control subsystem is used to monitor and control the operation of the energy-saving system.

[0030] The chopped strand vibration oven is the core equipment for the production of glass fiber chopped strands. The products are quickly dried and chemically reacted in the oven, thereby endowing the products with various properties required by customers.

[0031] The chopped waste gas system is an exhaust, filtration, heat energy recovery, and tail gas emission system for the waste gas composed of burner exhaust gas, baking high-temperature air, product water vapor, and some fine yarns. In the system, the effective circulation and heat energy recovery of production heat energy are realized by controlling the waste gas channel. The chopped waste gas subsystem specifically includes, as Figure 2 shown: a waste gas pipeline network, a dust removal device, a waste gas purification device, a heat recovery pipeline, a fan, and a heat exchanger 11.

[0032] The waste gas pipeline network, the dust removal device, the waste gas purification device, the heat recovery pipeline, the fan, and the heat exchanger 11 are all connected in series through pipelines; the heat exchanger 11 converts the heat of the fresh air into hot air, and the hot air is generated into high-temperature hot air through the chopped combustion subsystem and enters the chopped strand vibration oven. After passing through the chopped strand vibration oven, the high-temperature hot air enters the dust removal device through the heat recovery pipeline. The cooling air enters the waste gas pipeline network and is discharged after passing through the chopped strand vibration oven. After passing through the dust removal device and the waste gas purification device, part of the high-temperature hot air enters the chopped strand vibration oven, and the other part enters the heat exchanger 11 and then enters the waste gas pipeline network and is discharged.

[0033] The dust removal equipment is specifically composed of a cyclone dust collector 9, a cage dust collector, and a water curtain dust collector 13. The fans are specifically composed of an exhaust fan 12, a combustion-supporting fan 1, a drying fan 18, a curing fan 19, and a cooling fan 21. It also includes air valves for controlling the gas flow rate; the air valves specifically include: a fresh air valve 15, a drying air valve 16, a curing air valve 17, a cooling air valve 20, and an exhaust air valve 14.

[0034] The working principle of the chopped waste gas subsystem is mainly as follows: After the combustion-supporting fan 1 is started, fresh air enters the hot air fan group through the heat exchanger 11; through the fans (drying fan 18, curing fan 19, cooling fan 21), hot air and cooling air enter the oven; after the high and low temperature air contacts the product through the oven, they respectively enter the heat recovery (hot exhaust air) and the exhaust pipe network (cold exhaust air); the hot exhaust air passes through the cyclone dust collector 9, the fan, and the cage dust collector, and part of it (filtered air) directly enters the hot air fan group for air mixing, and the other part (exhaust air) enters the heat exchanger 11 for heat exchange and then is discharged into the exhaust gas system together with the cold exhaust air through the dust removal fan; in the air path control system, through the combined action of the air valve opening degrees in each area and the fan frequency, the air supply volume is made to meet the production needs, the exhaust air volume ≥ the air supply volume, and the ratio of the filtered air and the exhaust air should also be reasonably regulated to achieve more efficient reuse of heat energy, and the fresh air temperature ≥ 100°C and other goals. By reasonably regulating multiple variables in the system, the energy-saving purpose of the oven is achieved.

[0035] The chopped combustion system, through gas combustion, the high-temperature air and the waste heat air are mixed in the air mixing chamber and blown into the oven through the high-temperature fan 7 at the standard temperature and air volume, so as to provide the temperature and energy required for baking the chopped products. The chopped combustion subsystem specifically includes, as Figure 3 shown: combustion-supporting fan 1, low-temperature burner 3, cabinet 2, air return port 4, combustion chamber 5, air mixing chamber 6, high-temperature fan 7, air supply port 8.

[0036] The cabinet 2 is installed at the front end of the hot air fan group or independently installed outside the hot air fan group. The combustion-supporting fan 1 is installed above the low-temperature burner 3, and the combustion-supporting fan 1 is connected to the combustion chamber 5 through a pipeline; the low-temperature burner 3 is installed at the rear side inside the cabinet 2 and connected to the combustion chamber 5; the combustion chamber 5 is located at the front side inside the air mixing chamber 6 and connected to the low-temperature burner 3; an air return port 4 is arranged above the air mixing chamber 6, and a high-temperature fan 7 is arranged on the right side of the air mixing chamber 6; the high-temperature fan 7 is used to send out the high-temperature air through the air supply port 8.

[0037] Combustion-supporting fan 1: Blows the high-temperature fresh air after heat exchange into the combustion chamber 5 to provide the air required for natural gas combustion. Since the temperature of the combustion-supporting fresh air exceeds 100°C and the temperature difference from the production required temperature is within 100°C, it effectively reduces energy consumption.

[0038] Low-temperature burner 3: The combustion control device for the natural gas of the combustion unit, which is used to reasonably regulate the gas volume and the introduced amount of combustion-supporting air, ensure the oxygen-fuel ratio, and improve the combustion efficiency.

[0039] Cabinet 2: Equipment composed of the burner system.

[0040] Return air inlet 4: Inlet for clean high-temperature waste heat air.

[0041] Combustion chamber 5: Natural gas combustion cavity.

[0042] Air mixing chamber 6: Chamber where the clean high-temperature waste heat air introduced by the return air inlet 4 is mixed with the high-temperature air discharged from the natural gas combustion chamber 5 to achieve uniform air temperature.

[0043] High-temperature fan 7: Used to blow high-temperature air into the chopped strand vibrating oven.

[0044] The control subsystem includes: a data acquisition module, a data analysis and processing module, a control execution module, and a monitoring and warning module. The data acquisition module is used to collect various data within the energy-saving system; the data analysis and processing module is used to analyze and process the collected data; the control execution module is used to control based on the processed data; the monitoring and warning module is used to monitor the operation of the energy-saving system and give warnings for abnormal situations; the abnormal situations specifically include: equipment failures, too small or too large opening of the air valve, and air leakage of the device.

[0045] Among them, the data collected by the data acquisition module includes: fresh air temperature, ignition and operation signals of the chopped strand combustion subsystem, burner outlet temperature, opening of the exhaust air valve 14, opening of the cooling air valve 20, opening of the fresh air valve 15, and drying air valve 16.

[0046] This system diverts high- and low-temperature air. Through pipeline transformation, the low-temperature air in the oven exhaust gas is directly diverted to the end of the dust collector, while the high-temperature air, without being mixed with the low-temperature air, can reach 150°C. Then, after being filtered by the equipment, part of the clean air enters the oven for reuse, and part enters the high-efficiency heat exchanger 11 to exchange for fresh air with a temperature exceeding 100°C; through the reuse of waste heat air and the increase in fresh air temperature, the gas consumption required for heating can be effectively reduced.

[0047] For the oven combustion system, a high-efficiency hot air blower unit is adopted to separate the combustion-supporting air required for gas combustion and synchronously adjust it with the gas intake, making the combustion efficiency higher. At the same time, it is not affected by the air volume required for the head, changing the problem that the previous burner had insufficient combustion reaction time due to excessive combustion-supporting air volume and too fast air speed, resulting in insufficient and incomplete gas combustion; thereby reducing gas consumption.

[0048] Through system integration, the chopped strand vibrating oven, moisture exhaust system, dust removal system, energy supply, combustion-supporting air volume, and head air volume are all associated. Through temperature control and the energy management system, automated and digital management and control are realized, thus achieving visible faults, convenient management, and lower costs.

[0049] The utility model realizes precise control of the combustion-supporting air volume, which is beneficial to improving the combustion efficiency and reducing gas waste; the introduction of high-low temperature air diversion and the reuse of clean exhaust gas are beneficial to reducing the energy loss in the heat exchange process; the introduction of a high-efficiency heat exchange device is beneficial to increasing the temperature of the combustion-supporting air, reducing the temperature of the exhaust gas, and reducing energy consumption; the introduction of an intelligent integration system realizes automatic and digital management and control through a temperature control and energy management system.

[0050] The above are only the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the utility model shall fall within the protection scope of the appended claims of the utility model.

Claims

1. A chopped fiber vibrating oven gas energy-saving system, characterized in that, It includes a chopped yarn vibrating oven, a chopped waste gas subsystem, a chopped combustion subsystem, and a control subsystem; The chopped yarn vibrating oven is used for quickly drying and film-forming of chopped yarn; The chopped waste gas subsystem is used to control the gas circulation inside the energy-saving system; The chopped combustion subsystem is used to provide the temperature and energy required for baking chopped products; The control subsystem is used to monitor and control the operation conditions inside the energy-saving system.

2. The chopped fiber vibrating oven gas energy-saving system according to claim 1, characterized in that, The chopped waste gas subsystem specifically includes: a waste gas pipeline network, a dust removal device, a waste gas purification device, a heat recovery pipeline, a fan, and a heat exchanger (11); The waste gas pipeline network, the dust removal device, the waste gas purification device, the heat recovery pipeline, the fan, and the heat exchanger (11) are all connected in series through pipelines; the heat exchanger (11) converts the heat of fresh air to generate hot air, which enters the chopped yarn vibrating oven through the chopped combustion subsystem to generate high-temperature hot air. The high-temperature hot air passes through the chopped yarn vibrating oven and then enters the dust removal device through the heat recovery pipeline. The cooling air enters the waste gas pipeline network and is discharged after passing through the chopped yarn vibrating oven. The high-temperature hot air enters part of the chopped yarn vibrating oven after passing through the dust removal device and the waste gas purification device, and the other part enters the waste gas pipeline network and is discharged after entering the heat exchanger (11).

3. The chopped fiber vibration oven gas energy-saving system according to claim 2, wherein The dust removal device is specifically composed of a cyclone dust collector (9) and a water curtain dust collector (13); the waste gas purification device is a cage-type dust collector (10).

4. The chopped fiber vibrating oven gas energy-saving system according to claim 2, characterized in that, The fan is specifically composed of an exhaust fan (12), a combustion-supporting fan (1), a drying fan (18), a curing fan (19), and a cooling fan (21).

5. The chopped fiber vibrating oven gas energy-saving system according to claim 2, characterized in that, It also includes air valves for controlling the gas flow rate; the air valves specifically include: a fresh air valve (15), a drying air valve (16), a curing air valve (17), a cooling air valve (20), and an exhaust air valve (14).

6. The chopped fiber vibration oven gas energy-saving system according to claim 1, characterized in that, The chopped combustion subsystem specifically includes: a combustion-supporting fan (1), a low-temperature burner (3), a cabinet (2), a return air port (4), a combustion chamber (5), a mixing chamber (6), a high-temperature fan (7), and a supply air port (8); The cabinet (2) is installed at the front end of the hot air unit or independently outside the hot air unit. The combustion-supporting fan (1) is installed above the low-temperature burner (3), and the combustion-supporting fan (1) is connected to the combustion chamber (5) through a pipeline; the low-temperature burner (3) is installed at the rear side inside the cabinet (2) and is connected to the combustion chamber (5); the combustion chamber (5) is located at the front side inside the mixing chamber (6) and is connected to the low-temperature burner (3); the return air port (4) is arranged above the mixing chamber (6), and a high-temperature fan (7) is arranged on the right side of the mixing chamber (6); the high-temperature fan (7) is used to transmit the high-temperature air through the supply air port (8); The hot air unit is specifically composed of a combustion-supporting fan (1), a low-temperature burner (3), a return air port (4), a combustion chamber (5), a mixing chamber (6), a high-temperature fan (7), and a supply air port (8).

7. The chopped fiber vibrating oven gas energy-saving system according to claim 1, characterized in that, The control subsystem includes: a data acquisition module, a data analysis and processing module, a control execution module, and a monitoring and warning module; The data acquisition module is used to collect various data inside the energy-saving system; The data analysis and processing module is used to analyze and process the collected data; The control execution module is used to perform control based on the processed data; The monitoring and warning module is used to monitor the operation of the energy-saving system and give warnings for abnormal situations.

8. The chopped fiber vibrating oven gas energy-saving system according to claim 7, characterized in that, The data collected by the data acquisition module includes: fresh air temperature, ignition and operation signals of the chopped combustion subsystem, burner outlet temperature, opening degree of the exhaust air valve (14), opening degree of the cooling air valve (20), opening degree of the fresh air valve (15), and drying air valve (16).

9. The chopped fiber vibrating oven gas energy-saving system according to claim 7, characterized in that, The abnormal situations specifically include: equipment failures, too small or too large opening degrees of the air valves, and air leakage of the device.

10. The chopped strand vibrating oven gas energy-saving system according to claim 6, characterized in that The hot air temperature range in the hot air unit is 100°C to 150°C.

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