Steam waste heat boiler with condensate recovery structure

Abstract

The utility model relates to the technical field of waste heat boiler, and disclose a steam waste heat boiler with condensate water recovery structure, including main body stove and recovery mechanism, the upper middle part of main body stove is provided with water tank, and the middle part of one side of water tank is connected with the water inlet, the upper middle part of water tank is connected with the steam outlet, recovery mechanism for condensate water recovery is set up in the upper front end of steam outlet, through recovery mechanism, can make steam drive rotation when circulating, under the action of centrifugal force, the condensate water in steam is thrown to the recovery pipe inner wall, through the gravity of condensate water itself and the scraping of the pair of scraper plate, can gather condensate water to the recovery pipe bottom, finally utilize the water pipe backflow collection, thereby realize condensate water recovery, can let the waste heat boiler waste heat utilization form more complete system, and the condensate water temperature is higher, can be used for preheating boiler water after recovery, can make the initial temperature of water greatly improve, reduce the energy consumption needed for subsequent heating to produce steam, reduce fuel usage.

Description

Technical Field

[0001] This utility model relates to the field of waste heat boiler technology, specifically a steam waste heat boiler with a condensate recovery structure. Background Technology

[0002] A waste heat boiler is a boiler that uses the residual heat from waste gas, waste materials, or waste liquid in various industrial processes, as well as the heat generated from the combustion of combustible substances, to heat water to a certain temperature. Oil-fired boilers, gas-fired boilers, and coal-fired boilers with waste heat recovery and utilization functions in the smoke box and flue are also called waste heat boilers. Waste heat boilers can produce hot water or steam to supply other processes through waste heat recovery.

[0003] Application No. CN220736735U discloses a steam waste heat boiler recovery device, relating to the field of waste heat boiler technology. The device includes a furnace body, with a filtration mechanism externally mounted on the furnace body. The filtration mechanism includes a filter box, a sealing frame slidably connected to the inner wall of the filter box, a high-temperature resistant filter screen fixedly connected to the inner wall of the sealing frame, a limiting seat fixedly connected to the outer surface of the sealing frame, and a guide seat fixedly connected to the outer surface of the filter box. A limiting plate slidably connects to the inner wall of the guide seat, and the limiting plate is adapted to the limiting seat. This invention, through the furnace body and filtration mechanism, can filter the high-temperature exhaust gas entering the furnace body, preventing excessive dust from the exhaust gas from adhering to the surface of the heat exchange tubes, thus reducing the need for frequent cleaning and saving cleaning costs. It is also convenient to use.

[0004] In the aforementioned cases and existing waste heat boiler equipment, the steam produced is often directly supplied to other processes. However, the steam often produces condensate during its flow. This condensate contains a large amount of sensible heat. If it is discharged directly, this heat will be lost and cannot be reused to preheat the boiler feedwater. Fresh softened water needs to be constantly added to maintain the boiler water level. In the long run, the feedwater cost will increase significantly. Utility Model Content

[0005] The purpose of this utility model is to provide a steam waste heat boiler with a condensate recovery structure to solve the problem mentioned in the background art. In the operation of existing waste heat boiler equipment, the steam produced is often directly supplied to other processes. However, the steam often produces a certain amount of condensate during circulation. The condensate contains a large amount of sensible heat. If it is directly discharged, this part of the heat will be lost and cannot be reused to preheat the boiler feedwater. Fresh softened water needs to be constantly added to maintain the boiler water level. In the long run, the feedwater cost will increase significantly.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a steam waste heat boiler with a condensate recovery structure, comprising a main furnace and a recovery mechanism. A water tank is provided at the upper center of the main furnace, and a water inlet is connected to the middle of one side of the water tank. A steam outlet is connected to the upper center of the water tank. The recovery mechanism for condensate recovery is located at the upper front end of the steam outlet. The recovery mechanism includes a recovery pipe, a spiral shaft, a support frame, a mounting base, a fixing frame, a scraper, a water collection port, a drain valve, and a water guide pipe. A spiral shaft is provided at the inner center of the recovery pipe, and a support frame is installed above and below the front and rear ends of the spiral shaft. A mounting base is installed at the top of the support frame. A fixing frame is fixed at the middle of the surface of the spiral shaft, and a scraper is installed at the top of the fixing frame. A water collection port is opened at the lower inside of the recovery pipe, and a drain valve is installed below the water collection port. A water guide pipe is connected below the drain valve.

[0007] Preferably, the spiral shaft is rotatably connected to the recovery pipe via a support frame and a mounting base, and the recovery pipe is connected to the drain and the water guide pipe, with the upper surface of the scraper blade in contact with the inner surface of the recovery pipe.

[0008] Preferably, an air inlet is provided in the middle of one side of the main furnace, and a connection mechanism for quick disassembly and assembly is provided at the connection between the steam outlet and the recovery mechanism.

[0009] Preferably, the connecting mechanism includes a lower connecting seat and a sealing plate, wherein the sealing plate is disposed in the middle of the surface of the lower connecting seat.

[0010] Preferably, the connecting mechanism further includes an upper connecting seat and a plug-in end. The upper connecting seat is provided above the lower connecting seat, and the plug-in end is fixed on the outer side of the lower surface of the upper connecting seat. The upper connecting seat is plugged into the lower connecting seat through the plug-in end.

[0011] Preferably, the connecting mechanism further includes quick clamps and fixing wires. Quick clamps are installed on the front and rear sides of the outer surfaces of the lower connecting seat and the upper connecting seat, and fixing wires are installed at the middle of the rear end of the quick clamps.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model uses a recovery mechanism to make steam rotate during circulation. Under the action of centrifugal force, the condensate in the steam is thrown towards the inner wall of the recovery pipe. Through the gravity of the condensate itself and the scraping action of the scraper, the condensate can be collected at the bottom of the recovery pipe and finally collected by the water guide pipe, thereby realizing the recovery of condensate. This allows the waste heat utilization of the waste heat boiler to form a more complete system. Moreover, the condensate temperature is relatively high, and after recovery, it can be used to preheat the boiler feed water, which can significantly increase the initial temperature of the feed water, reduce the energy consumption required for subsequent heating to generate steam, and reduce fuel consumption.

[0014] 2. This utility model, through the connecting mechanism, can realize the quick fixing and disassembly of the lower connecting seat and the upper connecting seat. After the device has been running for a period of time, impurities, scale, etc. may adhere to the inner wall. The quick disassembly and assembly can facilitate the maintenance personnel to disassemble the device regularly, thoroughly clean the internal spiral blades, inner wall and other components, remove dirt, ensure that the condensate separation efficiency of the device is not affected, and maintain a good operating condition. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of a steam waste heat boiler with a condensate recovery structure according to the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the recovery pipe of a steam waste heat boiler with a condensate recovery structure according to the present invention.

[0017] Figure 3 This is a partial cross-sectional three-dimensional structural schematic diagram of the recovery pipe of a steam waste heat boiler with a condensate recovery structure according to the present invention.

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the connection mechanism of a steam waste heat boiler with a condensate recovery structure according to the present invention.

[0019] In the diagram: 1. Main furnace; 2. Air inlet; 3. Water tank; 4. Water inlet; 5. Steam outlet; 6. Recovery mechanism; 601. Recovery pipe; 602. Spiral shaft; 603. Support frame; 604. Mounting base; 605. Fixing frame; 606. Scraper; 607. Water collection port; 608. Drainage device; 609. Water guide pipe; 7. Connecting mechanism; 701. Lower connecting seat; 702. Sealing plate; 703. Upper connecting seat; 704. Plug-in end; 705. Quick clamp; 706. Fixing screw. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-3 As shown, a steam waste heat boiler with a condensate recovery structure includes a main furnace 1 and a recovery mechanism 6 set on the top of the main furnace 1. The condensate can be recovered through the recovery mechanism 6. A water tank 3 is set in the middle of the upper part of the main furnace 1, and a water inlet 4 is connected to the middle of one side of the water tank 3. A heat exchange tube is set in the water tank 3 to recover waste heat.

[0022] A steam outlet 5 is connected to the upper center of the water tank 3. The recovery mechanism 6 includes a recovery pipe 601 connected to the steam outlet 5. A spiral shaft 602 is provided in the middle of the inner side of the recovery pipe 601. Support frames 603 are installed at the front and rear ends of the spiral shaft 602. A mounting seat 604 is installed at the top of the support frame 603. A fixing frame 605 is fixed in the middle of the surface of the spiral shaft 602. A scraper 606 is installed at the top of the fixing frame 605. The spiral shaft 602 is rotatably connected to the recovery pipe 601 through the support frame 603 and the mounting seat 604. The upper surface of the scraper 606 is in contact with the inner surface of the recovery pipe 601. The spiral shaft 602 and the scraper 606 can collect condensate to the bottom of the recovery pipe 601 for subsequent recovery.

[0023] A water collection port 607 is provided at the bottom of the inside of the recovery pipe 601, and a steam trap 608 is installed below the water collection port 607. A water guide pipe 609 is connected below the steam trap 608. The recovery pipe 601 is connected to the steam trap 608 and the water guide pipe 609. The condensate can be guided downward through the water collection port 607.

[0024] The spiral shaft 602 causes the steam to rotate as it flows through the recovery pipe 601. Under centrifugal force, the condensate in the steam is thrown towards the inner wall of the recovery pipe 601. Through the gravity of the condensate itself and the scraping action of the scraper 606 on the inner wall of the recovery pipe 601, the condensate is collected at the bottom of the recovery pipe 601. After separation by the steam trap 608, the collected condensate flows downwards through the water pipe 609 for return collection, thus achieving condensate recovery. This allows for a more complete system for utilizing waste heat from the waste heat boiler. Furthermore, the condensate is at a relatively high temperature and can be used to preheat the boiler feedwater. For example, using the recovered 80°C condensate to preheat the feedwater can significantly increase the initial temperature of the feedwater, reducing the energy consumption required for subsequent heating to generate steam and decreasing fuel consumption.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, an air inlet 2 is connected to the middle of one side of the main furnace 1. A connection mechanism 7 for quick assembly and disassembly is provided at the connection between the steam outlet 5 and the recovery mechanism 6. The connection mechanism 7 includes a lower connecting seat 701 connected to the steam outlet 5. A sealing plate 702 is provided in the middle of the surface of the lower connecting seat 701. An upper connecting seat 703 is provided above the lower connecting seat 701. An insertion end 704 is fixed on the outer side of the lower surface of the upper connecting seat 703. The upper connecting seat 703 is inserted into the lower connecting seat 701 through the insertion end 704. Quick clamps 705 are installed on the front and rear sides of the outer surfaces of the lower connecting seat 701 and the upper connecting seat 703. A fixing screw 706 is installed in the middle of the rear end of the quick clamp 705. The quick assembly and disassembly of the recovery mechanism 6 can be realized through the connection mechanism 7.

[0026] The lower connecting seat 701 and the upper connecting seat 703 can be connected together via the plug-in end 704. The sealing plate 702 can improve the sealing performance after connection. The quick clamp 705 can be used to quickly fix and disassemble the plug-in end 704 after the lower connecting seat 701 and the upper connecting seat 703 are connected. After fixing, the quick clamp 705 can be tightened by using the fixing screw 706 to engage with the screw holes on the surface of the lower connecting seat 701 and the upper connecting seat 703 to prevent loosening. After the device has been running for a period of time, impurities and scale may accumulate on the inner wall. Quick disassembly and assembly can facilitate maintenance personnel to regularly disassemble the device to thoroughly clean the internal spiral blades, inner wall and other components, remove dirt, and ensure that the condensate separation efficiency of the device is not affected and maintain good operating condition.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steam waste heat boiler with a condensate recovery structure, comprising a main furnace (1) and a recovery mechanism (6), characterized in that: A water tank (3) is provided at the upper center of the main furnace (1), and a water inlet (4) is connected to the middle of one side of the water tank (3). A steam outlet (5) is connected to the upper center of the water tank (3). The recovery mechanism (6) for condensate recovery is located at the upper front end of the steam outlet (5). The recovery mechanism (6) includes a recovery pipe (601), a spiral shaft (602), a support frame (603), a mounting base (604), a fixing frame (605), a scraper (606), a water collection port (607), a drain valve (608), and a water guide pipe (609). The recovery pipe (601) A spiral shaft (602) is provided in the middle of the inner side of the spiral shaft (602), and a support frame (603) is installed above and below the front and rear ends of the spiral shaft (602). A mounting base (604) is installed at the top of the support frame (603). A fixing frame (605) is fixed in the middle of the surface of the spiral shaft (602), and a scraper (606) is installed at the top of the fixing frame (605). A water collection port (607) is opened in the lower part of the inside of the recovery pipe (601), and a drainer (608) is installed below the water collection port (607). A water guide pipe (609) is connected to the lower part of the drainer (608).

2. A steam waste heat boiler with a condensate recovery structure according to claim 1, characterized in that: The spiral shaft (602) is rotatably connected to the recovery pipe (601) through the support frame (603) and the mounting base (604), and the recovery pipe (601) is connected to the drain (608) and the water guide pipe (609). The upper surface of the scraper (606) is in contact with the inner surface of the recovery pipe (601).

3. A steam waste heat boiler with a condensate recovery structure according to claim 1, characterized in that: An air inlet (2) is provided in the middle of one side of the main furnace (1), and a connection mechanism (7) for quick disassembly and assembly is provided at the connection between the steam outlet (5) and the recovery mechanism (6).

4. A steam waste heat boiler with a condensate recovery structure according to claim 3, characterized in that: The connecting mechanism (7) includes a lower connecting seat (701) and a sealing plate (702), and the sealing plate (702) is provided in the middle of the surface of the lower connecting seat (701).

5. A steam waste heat boiler with a condensate recovery structure according to claim 4, characterized in that: The connecting mechanism (7) further includes an upper connecting seat (703) and a plug-in end (704). The upper connecting seat (703) is provided above the lower connecting seat (701), and the plug-in end (704) is fixed on the outer side of the lower surface of the upper connecting seat (703). The upper connecting seat (703) is plugged into the lower connecting seat (701) through the plug-in end (704).

6. A steam waste heat boiler with a condensate recovery structure according to claim 5, characterized in that: The connecting mechanism (7) further includes a quick clamp (705) and a fixing wire (706). The quick clamp (705) is installed on the front and rear sides of the outer surface of the lower connecting seat (701) and the upper connecting seat (703), and the fixing wire (706) is installed at the middle of the rear end of the quick clamp (705).

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