Flexible recovery device for condensate water of heat exchanger
By designing a flexible condensate recovery device in the tobacco leaf threshing and re-drying equipment, and utilizing the reduced pressure of the flash tank to generate low-pressure flash steam and medium-pressure steam, the problem of heat loss from high-pressure condensate is solved, achieving efficient energy utilization and energy-saving effects.
Patent Information
- Application Number
- CN202423087333.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In existing tobacco leaf threshing and re-drying equipment, the high-pressure condensate generated by the heat exchanger suffers significant heat loss during its transport to the boiler water tank, leading to increased energy consumption.
A flexible heat exchanger condensate recovery device is designed, which generates low-pressure flash steam by reducing pressure in a flash tank. The low-pressure flash steam is used for insulation of the water tank, cyclone dust collector and discharge hopper, while medium-pressure steam is used for mixing nozzles in the feed hopper and nozzles in the discharge hopper, thereby reducing dependence on boiler steam.
It enables the reuse of high-pressure condensate, reduces steam energy consumption, saves the total steam consumption of the hot air leaf humidifier, and improves energy utilization efficiency.
Smart Images
Figure CN223663781U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tobacco leaf beating and redrying technical field, concretely to a heat exchanger condensate flexible recovery device. BACKGROUND
[0002] In the tobacco leaf beating and redrying field, the drum type hot air leaf moistening machine is one of the main equipment on the leaf beating and redrying production line, which has the functions of heating and humidifying tobacco leaves. After the heating and humidifying of hot air and atomized water, the temperature and humidity of tobacco leaves are properly improved, so that the tobacco leaves become soft and loose, and the toughness of the tobacco leaves is improved. The drum type hot air leaf moistening machine mainly comprises a rack, a feeding hopper, a discharging hopper, a drum, a circulating air duct, a water tank, a control system, a water vapor system and the like. The circulating air duct contains a cyclone dust collector, a heat exchanger and a pipeline. The main function of the circulating air duct is to heat the circulating air to heat the material. The drum type hot air leaf moistening machine needs to use steam at the positions of the heat exchanger, the mixing nozzle of the feeding hopper, the mixing nozzle of the discharging hopper, the pure steam nozzle of the feeding hopper, the pure steam nozzle of the discharging hopper, the water tank insulation, the cyclone dust collector insulation, the discharging hopper insulation and the like. The steam pressure required by the heat exchanger is about 0.8 MPa, the steam pressure required by the mixing nozzle and the pure steam nozzle is about 0.3 MPa, and the steam pressure required by the insulation is about 0.1 MPa. The steam consumption in the heat exchanger is the largest, and it is one of the main energy consumptions of the hot air leaf moistening machine.
[0003] The high-pressure steam and the low-temperature gas realize heat exchange in the heat exchanger to generate high-pressure condensate water. The high-pressure condensate water generated by the heat exchanger of the existing hot air leaf moistening machine is recovered to the water tank of the boiler through the pipeline. The distance between the heat exchanger and the boiler is very far. The heat of the high-pressure condensate water is completely lost in the process of being transported to the water tank of the boiler. Therefore, the utility model provides a heat exchanger condensate flexible recovery device. UTILITY MODEL CONTENTS
[0004] The utility model discloses a heat exchanger condensate flexible recovery device, solves the "first, through the utilization high-pressure condensate water just place decompression after generation low-pressure flash steam, low-pressure flash steam secondary utilization reduces steam energy consumption total amount, second, through the utilization high-pressure condensate water just place decompression after generation low-pressure flash steam, through using high-pressure steam to inject low-pressure flash steam, obtains medium-pressure steam, medium-pressure steam just uses, thereby makes low-pressure flash steam be fully used, reduces steam energy consumption total amount" problem.
[0005] To achieve the above object, the utility model provides following technical scheme: A heat exchanger condensate flexible recovery device, including bottom plate, one end of bottom plate top is installed heat exchanger and high pressure condensate collection pipe respectively, the heat exchanger export end is installed connecting pipe, and the end of connecting pipe is fixed with the import of high pressure condensate collection pipe, the other end of bottom plate top is installed flash tank, high pressure steam tank and steam ejector respectively, the outlet of flash tank is fixed with steam pipe, and the high pressure condensate of high pressure condensate collection pipe passes through liquid pipe and is connected with flash tank, the low pressure flash steam of flash tank is connected with steam ejector, the feed hopper mixing nozzle is used to the high pressure steam of steam ejector is imported into.
[0006] Preferably, the air outlet of the high-pressure steam tank is fixedly connected with an air pipe, and the air pipe is connected with the air inlet of the steam ejector.
[0007] Preferably, the steam pipe is formed with two connecting branch pipes at the end away from the high-pressure condensate collection pipe, one of the connecting branch pipes at the end of the steam pipe is connected with a branch pipe, and the other connecting branch pipe at the other end of the steam pipe is formed with three mounting branch pipes, and the three mounting branch pipes are respectively connected with a water tank, a cyclone dust collector and a discharge hopper of the drum-type hot air leaf moistening machine.
[0008] Preferably, the steam ejector is connected with a spray pipe at the spray port, the end of the spray pipe at the end of the spray port is formed with four spray branch pipes, and the four spray branch pipes are respectively connected with a feed hopper mixing nozzle, a discharge hopper mixing nozzle, a feed hopper pure steam nozzle and a discharge hopper pure steam nozzle of the drum-type hot air leaf moistening machine.
[0009] Preferably, the outer sides of the connecting pipe, the steam pipe, the communication pipe and the branch pipe are wrapped with a heat preservation layer.
[0010] Compared with the prior art, the utility model has the beneficial effects that: the high-pressure condensate water generated by the heat exchanger produces low-pressure flash steam in the flash tank, and the low-pressure flash steam is used to heat the water tank, the cyclone dust collector and the discharge hopper, so that the total steam consumption of the hot air leaf moistening machine is saved; the flash steam can also directly enter the steam ejector, and in the steam ejector, the low-pressure flash steam is extracted by using the high-pressure steam to obtain medium-pressure steam, which is used for the feed hopper mixing nozzle, the discharge hopper mixing nozzle, the feed hopper pure steam nozzle and the discharge hopper pure steam nozzle, so that the total steam consumption of the hot air leaf moistening machine is still saved. BRIEF DESCRIPTION OF DRAWINGS
[0011] Fig. 1 It is a whole structure schematic view of the utility model;
[0012] Fig. 2 It is a whole picture structure schematic view of the utility model.
[0013] Fig. 3 It is a recycling principle view schematic view of the utility model.
[0014] In the drawing: 1, bottom plate; 2, heat exchanger; 3, high-pressure condensate water collecting pipe; 4, flash tank; 5, high-pressure steam tank; 6, steam ejector; 7, connecting pipe; 8, steam pipe; 9, communication pipe; 10, injection port; 11, branch pipe; 12, water tank; 13, cyclone dust collector; 14, discharge hopper; 15, feed hopper mixed nozzle; 16, discharge hopper mixed nozzle; 17, feed hopper pure steam nozzle; 18, discharge hopper pure steam nozzle; 19, air pipe. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0016] Please refer to Figs. 1-3 The utility model provides a technical scheme: a heat exchanger condensate water flexible recovery device, including bottom plate 1, one end of bottom plate 1 top is installed heat exchanger 2 and high-pressure condensate water collecting pipe 3 respectively, and heat exchanger 2 export end is installed connecting pipe 7, and the end of connecting pipe 7 is fixed with the import end of high-pressure condensate water collecting pipe 3;
[0017] The other end of bottom plate 1 top is installed flash tank 4, high-pressure steam tank 5 and steam ejector 6 respectively, and the outlet end of flash tank 4 is fixed with steam pipe 8, and the high-pressure condensate water of high-pressure condensate water collecting pipe 3 is connected with flash tank 4 through liquid passage, and the low-pressure flash steam generated by flash tank 4 is connected with steam ejector 6, and feed hopper mixed nozzle 15 is used to import high-pressure steam into steam ejector 6.
[0018] The air outlet end of high-pressure steam tank 5 is fixed with air pipe 19, and air pipe 19 is connected with the air inlet of steam ejector 6, and the end of steam ejector 6 away from high-pressure steam tank 5 is provided with injection port 10.
[0019] It should be noted that the low-pressure flash steam generated by flash tank 4 can also directly enter steam ejector 6 according to the need, and the high-pressure steam in high-pressure steam tank 5 enters steam ejector 6, in steam ejector 6, the low-pressure flash steam is ejected by using high-pressure steam, and the medium-pressure steam is obtained and ejected through injection port 10.
[0020] The steam pipe 8 is connected with the branch pipe 11 at one end, and is connected with the water tank 12, the cyclone dust collector 13 and the discharge hopper 14 at the other end.
[0021] It should be noted that the high-pressure condensate water generated by the heat exchanger 2 can be reused and recycled, and the low-pressure flash steam generated after the high-pressure condensate water is decompressed in the flash tank 4 can be provided as heat preservation steam to the water tank 12, the cyclone dust collector 13 and the discharge hopper 14, so that the steam for heat preservation is not provided by the boiler, and the total steam consumption of the hot air leaf moistening machine is saved.
[0022] The injection port 10 of the steam ejector 6 is connected with an injection pipe, and the end of the injection pipe at the end of the injection port 10 is connected with four injection branch pipes, which are respectively connected with the inlet hopper mixing nozzle 15, the discharge hopper mixing nozzle 16, the inlet hopper pure steam nozzle 17 and the discharge hopper pure steam nozzle 18 of the drum-type hot air leaf moistening machine.
[0023] It should be noted that the high-pressure condensate water generated by the heat exchanger 2 can be reused and recycled, and the low-pressure flash steam generated after the high-pressure condensate water is decompressed in the flash tank 4 can be provided as heat preservation steam to the water tank 12, the cyclone dust collector 13 and the discharge hopper 14, so that the steam for heat preservation is not provided by the boiler, and the total steam consumption of the hot air leaf moistening machine is saved.
[0024] The outer sides of the connecting pipe 7, the steam pipe 8, the communication pipe 9 and the branch pipe 11 are wrapped with a heat preservation layer.
[0025] It should be noted that by arranging the heat preservation layer on the outer sides of the connecting pipe 7, the steam pipe 8, the communication pipe 9 and the branch pipe 11, the fluid conveyed in the connecting pipe 7, the steam pipe 8, the communication pipe 9 and the branch pipe 11 can be heat preserved, so that a large part of heat loss is avoided.
[0026] In the description of the utility model, need understanding is, the term "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation structure and operation, therefore cannot be understood as a restriction on the utility model.
[0027] In addition, the terms "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features limited by "first", "second", "third", "fourth" can be explicitly or implicitly include at least one of the features.
[0028] In the utility model, unless otherwise expressly provided and limited, the terms "installation", "arrangement", "connection", "fixing", "screw connection" and so on should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrated, can be mechanically connected, can also be electrically connected, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise expressly limited, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0029] Although the embodiments of the utility model have been shown and described, for ordinary skilled in the art, it can be understood that the embodiments can be changed, modified, replaced and changed in various ways without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and its equivalents.
Claims
1. A flexible condensate recovery device for heat exchangers, characterized in that, The utility model relates to a high-pressure steam injection device for a cylinder hot air leaf machine, which comprises a bottom plate (1) and a feeding hopper mixed nozzle (15), one end of the top of the bottom plate (1) is respectively provided with a heat exchanger (2) and a high-pressure condensate water collecting pipe (3), the outlet end of the heat exchanger (2) is provided with a connecting pipe (7), and the end of the connecting pipe (7) is fixedly connected with the inlet end of the high-pressure condensate water collecting pipe (3), the other end of the top of the bottom plate (1) is respectively provided with a flash tank (4), a high-pressure steam tank (5) and a steam ejector (6), the outlet end of the flash tank (4) is fixedly connected with a steam pipe (8), the high-pressure condensate water in the high-pressure condensate water collecting pipe (3) is connected with the flash tank (4) through a liquid communication pipe, the low-pressure flash steam generated by the flash tank (4) is connected with the steam ejector (6), and the feeding hopper mixed nozzle (15) is used for feeding high-pressure steam into the steam ejector (6).
2. The flexible condensate recovery device of a heat exchanger of claim 1, wherein: The steam pipe (8) is formed with two connecting branch pipes at the end away from the high-pressure condensate water collecting pipe (3), one of the end of the steam pipe (8) is connected with a branch pipe (11), and the other end of the steam pipe (8) is formed with three mounting branch pipes, and the three mounting branch pipes are respectively connected with a water tank (12), a cyclone dust collector (13) and a discharge hopper (14) of the cylinder hot air leaf machine.
3. The flexible condensate recovery device of a heat exchanger of claim 1, wherein: The steam ejector (6) is connected with an ejection pipe at the ejection port (10), the end of the ejection pipe at the end of the ejection port (10) is formed with four ejection branch pipes, and the four ejection branch pipes are respectively connected with a feeding hopper mixed nozzle (15), a discharge hopper mixed nozzle (16), a feeding hopper pure steam nozzle (17) and a discharge hopper pure steam nozzle (18) of the cylinder hot air leaf machine.
4. The flexible condensate recovery device of a heat exchanger of claim 1, wherein: The outer sides of the connecting pipe (7), the steam pipe (8), the communication pipe (9) and the branch pipe (11) are wrapped with a heat preservation layer.
5. The flexible condensate recovery device of a heat exchanger of claim 1, wherein: