A steam generator capable of separating scale from an inner vessel

Abstract

The application discloses a steam generator capable of separating water scale from an inner container and belongs to the technical field of steam generators. The steam generator capable of separating water scale from an inner container comprises an outer box body, an inner container body arranged in the outer box body, a burner fixedly connected to the outer box body, the burner is connected to the inner container body, and the outer box body is fixedly connected with a smoke exhaust pipe. The gas in the smoke exhaust pipe drives the reciprocating wire rod to rotate, so that the first scraper and the second scraper reciprocate in the outer box body, the inner wall of the outer box body and the outer wall of the inner container body are cleaned, the adhered water scale is separated, the nano scale-inhibiting metal ceramic ball particles in the sleeve release soluble complex after being contacted with water, the water scale is dispersed, the treatment efficiency of the water scale is further improved, the separated water scale is collected by using the filter box, the water scale can be treated during work and production, manual cleaning is not needed, and a large amount of manpower and material resources are saved.

Description

Technical Field

[0001] This invention relates to the field of steam generator technology, and more particularly to a steam generator that can separate scale from the inner tank. Background Technology

[0002] A steam generator (commonly known as a boiler) is a mechanical device that uses the thermal energy of fuel or other energy sources to heat water into hot water or steam. The original meaning of "boiler" refers to a water-containing container heated over a fire, while "furnace" refers to the place where fuel is burned. A boiler consists of two main parts: the boiler and the furnace. In the steam generator's water-steam system, feedwater is heated to a certain temperature in the heater and then enters the economizer through the feedwater pipe. After further heating, it is sent to the boiler drum, where it mixes with the boiler water and flows down the downcomer to the water-cooled wall inlet header. The water absorbs radiant heat from the furnace inside the water-cooled wall tubes, forming a steam-water mixture that flows through the riser to the boiler drum. A steam-water separator separates the water and steam, and the separated saturated steam exits through the boiler drum. The upper part flows to the steam turbine superheater, where it continues to absorb heat and becomes superheated steam at 450°C, which is then sent to the steam turbine. In terms of the combustion and flue gas system, the blower sends air into the air preheater to be heated to a certain temperature. The coal powder is ground into a certain fineness in the coal mill and carried by a portion of the hot air from the air preheater through the burner and injected into the furnace. The coal powder and air mixture ejected from the burner mixes with the remaining hot air in the furnace and burns, releasing a large amount of heat. The hot flue gas after combustion flows sequentially through the furnace, slag tube bundle, superheater, economizer and air preheater, and then passes through the dust removal device to remove fly ash. Finally, it is sent to the chimney by the induced draft fan and discharged into the atmosphere.

[0003] When existing gas-fired steam generators are in operation, scale tends to form on the inner wall after heating water. The increased scale thickness affects the heating effect of water, reduces the absorption rate, and results in significant energy loss. In addition, the existing methods of cleaning the scale require professional personnel, which increases cleaning costs and delays normal work and production. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that when a gas-fired steam generator is working, scale easily forms on the inner wall after heating water. The scale increases in thickness, which affects the heating effect of water, reduces the absorption rate, and results in greater energy loss. At the same time, existing methods of cleaning scale require professional personnel, which increases cleaning costs and delays normal work and production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A steam generator capable of separating scale from an inner liner includes an outer casing, an inner liner disposed within the outer casing, and a burner fixedly connected to the outer casing. The burner leads into the inner liner. An exhaust pipe is fixedly connected to the outer casing, one end of which is fixedly connected to the inner liner and leads into it. The generator further includes: reciprocating screws symmetrically rotatably connected within the outer casing; a first scraper threaded between two of the reciprocating screws, the first scraper being in contact with the inner wall of the outer casing; a second scraper fixedly connected to the first scraper via multiple connecting rods, the second scraper being in contact with the outer wall of the inner liner; the connecting rods being fixedly connected between the first and second scrapers; and sleeves circumferentially fixedly connected to the multiple connecting rods, each sleeve having an isolation mesh fixedly connected to both ends, and the sleeves being filled with nano-scale-resistant metal-ceramic granules.

[0007] To facilitate the rotation of the reciprocating screw, preferably, one end of the reciprocating screw is fixedly connected to an impeller, and the other end of the reciprocating screw is rotatably connected to the exhaust pipe. The impeller is in the exhaust pipe, and the two reciprocating screws are connected by a belt.

[0008] To further enhance the release of soluble complexes, a rotating shaft is rotatably connected within the sleeve, with propellers fixedly connected to both ends of the shaft.

[0009] To further enhance the release of soluble complexes, stirring rods are fixedly connected at equal intervals on the rotating shaft, and the stirring rods are housed within a sleeve.

[0010] To further improve energy efficiency, a baffle is fixedly connected to one end of the exhaust pipe near the inner liner. Multiple heat-conducting pipes are fixedly connected to the circumference of the side of the exhaust pipe near the baffle. One end of each heat-conducting pipe leads to the other side of the baffle. The heat-conducting pipes are located between the outer casing and the inner liner.

[0011] To facilitate the collection of residual scale after dispersion, a filter box is further included. A baffle net is slidably connected inside the filter box. A water pump is fixedly connected to the filter box. The input end of the water pump leads into the filter box and is located below the baffle net. A water suction pipe is fixedly connected to the outer casing. The two ends of the water suction pipe lead to the two ends of the outer casing, respectively. The water suction pipe communicates with the filter box and leads to the top of the baffle net. A drain pipe is fixedly connected to the water pump and leads into the outer casing.

[0012] To further improve the full utilization of energy, a heat exchanger is fixedly connected to the outer casing, and the end of the exhaust pipe away from the inner liner is connected to the heat exchanger.

[0013] Furthermore, a water inlet pipe is fixedly connected to one side of the outer casing, an air supply pipe is fixedly connected to the top of the outer casing, and a sewage discharge pipe is fixedly connected to the bottom of the outer casing.

[0014] Compared with the prior art, the present invention provides a steam generator that can separate scale from the inner tank, and has the following beneficial effects:

[0015] 1. This steam generator, which can separate scale from the inner tank, discharges high-pressure gas through the exhaust pipe, which drives the impeller to rotate in the exhaust pipe. This, in turn, drives the reciprocating screw fixed to the impeller to rotate in the outer casing. At the same time, the belt drives another reciprocating screw to rotate synchronously. When the two reciprocating screws rotate, they drive the first scraper and the second scraper to move back and forth in the outer casing, cleaning the inner wall of the outer casing and the outer wall of the inner tank, thus separating the attached scale.

[0016] 2. This steam generator, which separates scale from the inner tank, drives a first scraper to reciprocate within the outer casing. During this movement, the first scraper moves the sleeve synchronously. As the sleeve moves, water from the outer casing passes through it, contacting the nano-scale-resistant metal-ceramic particles within the sleeve. Upon contact, a soluble complex is formed and released into the outer casing, inhibiting the formation of calcium carbonate and magnesium carbonate. The complex disperses in the water and reacts with iron ions, forming a dynamic protective film on the inner wall of the pipe. This achieves corrosion prevention and scale removal. Simultaneously, it disperses calcium carbonate crystals already attached to the inner wall of the outer casing and the outer wall of the inner tank, gradually reducing scale buildup and slowing crystal growth, effectively inhibiting scale formation.

[0017] 3. This steam generator, which can separate scale from the inner tank, drives the propeller to rotate the shaft in the sleeve during the reciprocating movement of the sleeve. The rotation of the shaft causes the nano-scale-preventing metal ceramic particles in the sleeve to tumble, thereby allowing the nano-scale-preventing metal ceramic particles to fully contact the water, improving the release of soluble complexes, and further improving the scale removal and scale prevention effect.

[0018] 4. This steam generator, which can separate scale from the inner tank, produces a large amount of gas when the inner tank is burned. Due to the partition, the gas in the inner tank first enters the heat pipe, which extends into the space between the outer casing and the inner tank. The heated gas will heat up the heat pipe, which in turn heats the water in the outer casing. This fully utilizes the waste heat from the exhaust gas, improving environmental friendliness and saving energy.

[0019] The parts of this device not described herein are the same as or can be implemented using existing technologies. This invention uses gas in the exhaust pipe to drive a reciprocating screw to rotate, causing the first and second scrapers to move back and forth within the outer casing, cleaning the inner wall of the outer casing and the outer wall of the inner liner, thus separating the attached scale. At the same time, the nano-scale-resistant metal ceramic particles in the sleeve release soluble complexes upon contact with water to disperse the scale, further improving the scale treatment efficiency. The separated scale is then collected using a filter box, allowing scale treatment to be performed during operation and production, eliminating the need for manual cleaning and saving a significant amount of manpower and resources. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a steam generator that can separate scale from the inner tank according to the present invention;

[0021] Figure 2 This invention proposes a steam generator that can separate scale from the inner tank. Figure 1 Schematic diagram of the structure of A in the middle;

[0022] Figure 3 This is a schematic diagram of the structure of a steam generator heat-conducting pipe and sleeve that allows scale to be separated from the inner tank, as proposed in this invention.

[0023] Figure 4 This is a schematic diagram of the structure of a steam generator shaft that allows scale to separate from the inner tank, as proposed in this invention.

[0024] In the diagram: 1. Outer casing; 10. Water inlet pipe; 100. Sewage pipe; 1000. Gas supply pipe; 11. Burner; 12. Exhaust pipe; 121. Heat conduction pipe; 122. Baffle plate; 13. Reciprocating screw; 131. Impeller; 132. First scraper; 133. Connecting rod; 134. Second scraper; 135. Belt; 14. Sleeve; 141. Nanoscale anti-scaling metal ceramic pellets; 142. Shaft; 143. Propeller; 144. Stirring rod; 145. Isolation net; 2. Inner tank; 3. Filter box; 31. Water pump; 32. Drain pipe; 33. Pumping pipe; 34. Barrier net; 4. Heat exchanger. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] Example 1:

[0027] Reference Figure 1-4A steam generator capable of separating scale from the inner liner includes an outer casing 1, an inner liner 2 disposed within the outer casing 1, and a burner 11 fixedly connected to the outer casing 1, the burner 11 leading into the inner liner 2. An exhaust pipe 12 is fixedly connected to the outer casing 1, one end of the exhaust pipe 12 being fixedly connected to the inner liner 2 and leading into the inner liner 2. The generator also includes: reciprocating screws 13 symmetrically rotatably connected within the outer casing 1; a first scraper 132 threaded between the two reciprocating screws 13, the first scraper 132 being in contact with the inner wall of the outer casing 1; a second scraper 134 fixedly connected to the first scraper 132 via six connecting rods 133, the second scraper 134 being in contact with the outer wall of the inner liner 2; and the connecting rods 133 being fixedly connected to the first scraper 134. 2. Between the second scraper blades 134; sleeves 14 are circumferentially fixedly connected to six connecting rods 133 respectively, with isolation nets 145 fixedly connected to both ends of the sleeves 14, and nano anti-scaling metal ceramic particles 141 filled inside the sleeves 14; one end of a reciprocating screw 13 is fixedly connected to an impeller 131, and the other end of the reciprocating screw 13 is rotatably connected to the exhaust pipe 12, with the impeller 131 in the exhaust pipe 12, and the two reciprocating screws 13 are connected by a belt 135; a rotating shaft 142 is rotatably connected inside the sleeves 14, with propellers 143 fixedly connected to both ends of the rotating shaft 142; a water inlet pipe 10 is fixedly connected to one side of the outer casing 1, an air supply pipe 1000 is fixedly connected to the top of the outer casing 1, and a sewage pipe 100 is fixedly connected to the bottom of the outer casing 1;

[0028] When in use, the device sprays a well-mixed gas into the inner liner 2 through the burner 11, and ignites the well-mixed gas filling the inner liner 2 according to the ignition system on the burner 11, thereby achieving the effect of heating the inner liner 2.

[0029] After the inner tank 2 is heated, it exchanges heat with the water in the outer casing 1, causing the water in the outer casing 1 to heat up and generate steam.

[0030] When combustion occurs in the inner liner 2, a large amount of gas is generated. After the gas accumulates in the inner liner 2, it is discharged outward through the exhaust pipe 12. During discharge, the high-pressure gas drives the impeller 131 to rotate in the exhaust pipe 12, which in turn drives the reciprocating screw 13, which is fixed to the impeller 131, to rotate inside the outer casing 1. At the same time, the belt 135 drives another reciprocating screw 13 to rotate synchronously. After the two reciprocating screws 13 rotate, they drive the first scraper 132 to reciprocate inside the outer casing 1. During the movement, the first scraper 132 drives the sleeve 14 to move synchronously. When in operation, water inside the outer casing 1 passes through the sleeve 14 and comes into contact with the nano-scale-resistant metal ceramic particles 141 inside the sleeve 14. After contact, a soluble complex is formed and released into the outer casing 1, inhibiting the formation of calcium carbonate and magnesium carbonate and dispersing into the water. After reacting with iron ions, a dynamic protective film is formed on the inner wall of the pipe to achieve the purpose of corrosion prevention and scale prevention. At the same time, the calcium carbonate crystals that have been attached to the inner wall of the outer casing 1 and the outer wall of the inner tank 2 are dispersed and dispersed in the water, gradually reducing scale buildup and slowing down crystal growth, effectively inhibiting the formation of scale.

[0031] Meanwhile, during the reciprocating movement of the sleeve 14, the propeller 143 will drive the rotating shaft 142 to rotate in the sleeve 14 under the push of the water in the outer casing 1. After the rotating shaft 142 rotates, the nano anti-scaling metal ceramic particles 141 in the sleeve 14 will turn over, thereby allowing the nano anti-scaling metal ceramic particles 141 to fully contact the water, improving the release of soluble complexes, and further improving the descaling and scale prevention effect.

[0032] It should be understood that the propellers 143 at both ends of the rotating shaft 142 are set in the same direction, so as to ensure that the rotation of the rotating shaft 142 will not be affected no matter which direction the sleeve 14 moves.

[0033] Meanwhile, the first scraper 132, driven by the reciprocating screw 13, cleans the inner wall of the outer casing 1, further preventing scale from adhering to the inner wall. Since the second scraper 134 is fixedly connected to the first scraper 132 through the connecting rod 133, the second scraper 134 will move back and forth synchronously when the first scraper 132 moves. The second scraper 134 cleans the outer wall of the inner tank 2, further preventing scale from adhering to the outer wall of the inner tank 2 and separating it.

[0034] Example 2:

[0035] Reference Figure 4 A steam generator that can separate scale from the inner tank is basically the same as in Example 1, but further: stirring rods 144 are fixedly connected at equal intervals on the rotating shaft 142, and the stirring rods 144 are in the sleeve 14.

[0036] When the shaft 142 rotates, the stirring rod 144 can further agitate the nano-scale-preventing metal ceramic particles 141 in the sleeve 14, so that the nano-scale-preventing metal ceramic particles 141 come into more sufficient contact with water, further improving the release of soluble complexes, further improving the scale prevention and removal effect, facilitating the rapid dispersion of the generated scale, and thus facilitating the separation of scale from the inner wall of the outer casing 1 and the outer wall of the inner tank 2.

[0037] Example 3:

[0038] Reference Figure 1-2 A steam generator that can separate scale from the inner liner is basically the same as in Example 2, but further: a partition 122 is fixedly connected to one end of the exhaust pipe 12 near the inner liner 2, and three heat-conducting pipes 121 are fixedly connected to one side of the exhaust pipe 12 near the partition 122. One end of the heat-conducting pipes 121 leads to the other side of the partition 122, and the heat-conducting pipes 121 are located between the outer casing 1 and the inner liner 2.

[0039] When the inner liner 2 burns and produces a large amount of gas, the gas in the inner liner 2 will first enter the heat pipe 121 due to the partition 122. The heat pipe 121 extends into the space between the outer casing 1 and the inner liner 2. The gas with heat will cause the heat pipe 121 to heat up. The heat pipe 121 heats the water in the outer casing 1, thereby making full use of the waste heat of the gas discharged after combustion, improving environmental protection, and saving energy.

[0040] The gas then re-enters the exhaust pipe 12 through the heat pipe 121 and is discharged.

[0041] Example 4:

[0042] Reference Figure 1 A steam generator that can separate scale from the inner tank is basically the same as in Example 3, but further includes a filter box 3, a baffle net 34 slidably connected inside the filter box 3, a water pump 31 fixedly connected to the filter box 3, the input end of the water pump 31 leading into the filter box 3 and located below the baffle net 34, a water suction pipe 33 fixedly connected to the outer casing 1, the two ends of the water suction pipe 33 leading to the two ends of the outer casing 1 respectively, the water suction pipe 33 communicating with the filter box 3 and leading to the top of the baffle net 34, and a drain pipe 32 fixedly connected to the water pump 31, the drain pipe 32 leading into the outer casing 1;

[0043] After the first scraper 132 and the second scraper 134 separate the scale, the water pump 31 repeatedly draws water mixed with scale from the outer casing 1 through the water pumping pipe 33, so that the water enters the filter box 3. The water entering the filter box 3 passes through the barrier net 34, and the scale is blocked by the barrier net 34 and remains in the filter box 3. The water passing through the barrier net 34 is discharged back into the outer casing 1 through the drain pipe 32, thereby collecting the scale separated in the outer casing 1.

[0044] By closing the valve on the water pumping pipe 33 and pulling out the barrier net 34, it is easy to clean the scale on the barrier net 34 and avoid clogging the barrier net 34.

[0045] It should be understood that the barrier net 34 and the filter box 3 are sealed to prevent water and air leakage.

[0046] Example 5:

[0047] Reference Figure 1 A steam generator that can separate scale from the inner tank is basically the same as in Example 4, but further: a heat exchanger 4 is fixedly connected to the outer casing 1, and the end of the exhaust pipe 12 away from the inner tank 2 is connected to the heat exchanger 4.

[0048] After the heat pipe 121 discharges the gas in the inner liner 2 into the exhaust pipe 12, the gas with residual heat enters the heat exchanger 4 and exchanges heat with the water in the heat exchanger 4, thereby making full use of resources and avoiding waste. After the water in the heat exchanger 4 is heated, it is discharged into the outer casing 1 through the pipe, improving thermal efficiency and achieving the purpose of energy saving.

[0049] This invention uses gas in the exhaust pipe 12 to drive the reciprocating screw 13 to rotate, causing the first scraper 132 and the second scraper 134 to reciprocate within the outer casing 1, cleaning the inner wall of the outer casing 1 and the outer wall of the inner liner 2, thus separating the attached scale. At the same time, the nano-scale-resistant metal ceramic particles 141 in the sleeve 14 release soluble complexes after contacting water to disperse the scale, further improving the scale treatment efficiency. The separated scale is then collected by the filter box 3, allowing scale treatment to be carried out during operation and production without the need for manual cleaning, saving a lot of manpower and resources.

[0050] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steam generator capable of separating scale from an inner container, comprising an outer box body (1) and an inner container body (2) arranged in the outer box body (1), and a burner (11) fixedly connected to the outer box body (1), the burner (11) opening into the inner container body (2), characterized in that, The outer box body (1) is fixedly connected with a smoke exhaust pipe (12), one end of the smoke exhaust pipe (12) is fixedly connected with the inner container body (2) and leads into the inner container body (2), and the outer box body (1) is further provided with: The reciprocating wire rods (13) are symmetrically and rotatably connected in the outer box body (1); The first scraper (132) is threadedly connected between the two reciprocating wire rods (13), the first scraper (132) is attached to the inner wall of the outer box body (1), the first scraper (132) is fixedly connected with the second scraper (134) through a plurality of connecting rods (133), the second scraper (134) is attached to the outer wall of the inner container body (2), and the connecting rods (133) are fixedly connected between the first scraper (132) and the second scraper (134); A plurality of sleeve pipes (14) are circumferentially and fixedly connected to the connecting rods (133), both ends of each sleeve pipe (14) are fixedly connected with an isolation net (145), and the sleeve pipe (14) is filled with nano anti-fouling metal ceramic ball particles (141); One end of one reciprocating wire rod (13) is fixedly connected with an impeller (131), one end of the reciprocating wire rod (13) is rotatably connected with the smoke exhaust pipe (12), the impeller (131) is in the smoke exhaust pipe (12), and the two reciprocating wire rods (13) are connected through a belt (135); The sleeve pipe (14) is rotatably connected with a rotating shaft (142), both ends of the rotating shaft (142) are fixedly connected with propellers (143); The rotating shaft (142) is fixedly connected with stirring rods (144) at equal intervals, and the stirring rods (144) are in the sleeve pipe (14).

2. The steam generator of claim 1, wherein, One end of the smoke exhaust pipe (12) close to the inner container body (2) is fixedly connected with a partition plate (122), one side of the smoke exhaust pipe (12) close to the partition plate (122) is circumferentially and fixedly connected with a plurality of heat conducting pipes (121), one end of each heat conducting pipe (121) leads to the other side of the partition plate (122), and the heat conducting pipes (121) are between the outer box body (1) and the inner container body (2).

3. The steam generator of claim 2, wherein, Further comprising a filter box (3), the filter box (3) is slidably connected with a blocking net (34), the filter box (3) is fixedly connected with a water pump (31), the input end of the water pump (31) leads into the filter box (3) and is located below the blocking net (34), the outer box body (1) is fixedly connected with a water pumping pipe (33), both ends of the water pumping pipe (33) lead into both ends of the outer box body (1), the water pumping pipe (33) communicates with the filter box (3) and leads to above the blocking net (34), and the water pump (31) is fixedly connected with a drainage pipe (32), the drainage pipe (32) leads into the outer box body (1).

4. The steam generator of claim 3, wherein, The outer box body (1) is fixedly connected with a heat exchanger (4), and one end of the smoke exhaust pipe (12) away from the inner container body (2) is connected with the heat exchanger (4).

5. The steam generator of claim 4, wherein, One side of the outer box body (1) is fixedly connected with a water inlet pipe (10), the top end of the outer box body (1) is fixedly connected with a gas conveying pipe (1000), and the bottom of the outer box body (1) is fixedly connected with a sewage pipe (100).

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