Anti-dry-burning condensation steam boiler

Abstract

The utility model discloses an anti-dry burning condensation steam boiler relates to boiler technical field, including condensation steam boiler and water tank, inside the water tank is provided with buoyancy rod, the inner wall of condensation steam boiler is provided with the sleeve, the inner wall of sleeve is connected with the air bag, the arc connecting plate is connected between the air bag and water tank, the arc connecting plate is connected with the air bag. An air pump is arranged on one side of the sleeve, one end of the air pump is connected with an air conveying pipe, two connecting rods are connected to the water tank in an inserted mode, and L-shaped fixing rods are installed on the outer walls of the connecting rods; when the water level of the water tank drops, the buoyancy rod sinks, the connecting rod is released and moves downwards, in the downward moving process, the connecting rod triggers the alarm and the starting button through the L-shaped fixing rod, the alarm continuously gives an alarm, the starting button starts the air pump, the air pump inflates the sleeve, the air extrudes the air bag, and water is conveyed to the water tank. The water supplementing of the air bag ensures that the water tank is filled with water before the worker arrives, and dry burning is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a condensing steam boiler capable of preventing dry burning. Background Art

[0002] The condensing steam boiler absorbs the sensible heat in the high-temperature flue gas discharged from the boiler exhaust and the latent heat released by the condensation of water vapor through efficient condensers and economizers, thereby improving the thermal efficiency of the boiler. During the condensation process, the boiler needs to ensure that there is enough water for condensation and heat exchange to avoid dry burning.

[0003] In order to ensure the safe operation of condensing steam boilers, preventing dry burning has become a crucial consideration; dry burning will not only cause the temperature of the heating components to rise abnormally, but may even induce combustion, thereby causing irreversible damage to the boiler's heating elements, pipelines and other key components, seriously affecting the boiler's service life and performance;

[0004] In order to solve this problem, the prior art generally adopts a water level probe installed on one side of the water tank in the boiler. When the water in the water tank is in a normal full state, the water level probe can accurately sense the presence of water; however, once the amount of water in the water tank decreases to a level that the water level probe cannot detect, the water level probe will immediately send out an obvious warning signal to alert the surrounding staff. If the staff near the boiler fails to detect this alarm in time and take corresponding measures, the boiler will enter a dry burning state, which will cause the metal part of the boiler to overheat, which may cause deformation, cracking or even melting, and seriously damage the boiler. Utility Model Content

[0005] The purpose of the utility model is to provide a condensing steam boiler with an anti-dry burning function, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides a dry-burning-proof condensing steam boiler, comprising a condensing steam boiler and a water tank, a buoyancy rod is arranged inside the water tank, a sleeve is installed on the inner wall of the condensing steam boiler, an air bag is connected to the inner wall of the sleeve, an arc-shaped connecting plate is connected between the air bag and the water tank, an air pump is arranged on one side of the sleeve, an air pipe is connected to one end of the air pump, two connecting rods are plugged into the water tank, an L-shaped fixing rod is installed on the outer wall of the connecting rod, a start button electrically connected to the air pump is arranged under one of the L-shaped fixing rods, and an alarm is arranged under the other L-shaped fixing rod.

[0007] Furthermore, two arc-shaped limit rods are installed on the inner wall of the water tank, the connecting rod is plugged into the arc-shaped limit rod and the bottom end of the connecting rod is against the outer wall of the buoyancy rod, the buoyancy rod is located between the arc-shaped limit rod and the water tank, and the buoyancy rod is located on one side of the arc-shaped connecting plate.

[0008] Furthermore, the arc-shaped connecting plate is provided with a chamber, the water tank is provided with a through slot, the outer wall of the arc-shaped connecting plate is connected to the inner wall of the through slot, and the buoyancy rod abuts against the outlet of the chamber.

[0009] Furthermore, one end of the air pump is connected to an L-shaped transmission pipe, one end of the L-shaped transmission pipe away from the air pump is connected to an air collecting hood, and a plurality of whistles are arranged below the air collecting hood.

[0010] Furthermore, a bracket is installed on the outer wall of the sleeve, the air pump is installed on the top of the bracket, and the plurality of whistles are installed on the inner bottom wall of the bracket.

[0011] Furthermore, a blocking plate is connected between the outer walls of the two arc-shaped limiting rods, the outer wall of the blocking plate is connected to the inner wall of the water tank, and a distance is left between the arc-shaped limiting rod and the inner wall of the water tank.

[0012] Furthermore, a fixing plate is installed on the outer wall of the water tank, and the start button and the alarm are both installed on the top of the fixing plate.

[0013] Furthermore, a circular pressing plate is installed at the bottom end of the L-shaped fixing rod, one of the circular pressing plates corresponds to the alarm, and the other circular pressing plate corresponds to the start button.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, when the water level in the water tank drops, the buoyancy rod sinks accordingly, releasing the connecting rod to move it downward. During the downward movement, the connecting rod triggers the alarm and the start button respectively through the L-shaped fixing rod. The alarm continues to sound the alarm, and the start button starts the air pump. The air pump inflates the sleeve, and the gas squeezes the airbag to transport water to the water tank. The water replenishment of the airbag ensures that the water tank remains filled with water before the staff arrives to avoid dry burning.

[0016] 2. In the utility model, when the water in the airbag is completely squeezed out, the sleeve is filled with gas. At this time, the air pump starts to work, extracts the gas in the sleeve, and guides the gas to the gas collecting hood through the L-shaped transmission tube. During the gas discharge process, multiple whistles will be blown first to make them make sounds, thereby sending a signal to the staff to inform them that the airbag is free of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the arc-shaped limiting rod and the blocking plate in the utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the air pump and the L-shaped transmission pipe in the utility model;

[0020] Figure 4 for Figure 2 A magnified view of the structure at center A;

[0021] Figure 5 for Figure 2 A magnified view of the structure at point B.

[0022] In the figure: 1. Condensing steam boiler;

[0023] 2. Water tank; 3. Arc-shaped limit rod; 4. Blocking plate; 5. Buoyancy rod; 6. Connecting rod; 7. Arc-shaped connecting plate; 8. Sleeve; 9. Air bag; 10. Air pipe; 11. Air pump; 12. Fixing plate; 13. Whistle; 14. L-shaped transmission pipe; 15. Bracket; 16. Air collecting hood; 17. Alarm; 18. Through groove; 19. Chamber; 20. L-shaped fixing rod; 21. Round pressing plate; 22. Start button. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0026] See also Figure 1-Figure 5 As shown, a condensing steam boiler with anti-dry burning includes a condensing steam boiler 1 and a water tank 2. A buoyancy rod 5 is arranged inside the water tank 2. A sleeve 8 is fixedly installed on the inner wall of the condensing steam boiler 1. An air bag 9 is fixedly connected to the inner wall of the sleeve 8. An arc-shaped connecting plate 7 is connected between the air bag 9 and the water tank 2. An air pump 11 is arranged on one side of the sleeve 8. An air pipe 10 is fixedly connected to one end of the air pump 11. The end of the air pipe 10 away from the air pump 11 is located in the sleeve 8. Two connecting rods 6 are inserted into the water tank 2. An L-shaped fixing rod 20 is fixedly installed on the outer wall of the connecting rod 6. A start button 22 electrically connected to the air pump 11 is arranged below one of the L-shaped fixing rods 20, and an alarm 17 is arranged below the other L-shaped fixing rod 20.

[0027] The buoyancy rod 5 is hollow inside, so that the buoyancy rod 5 has buoyancy and can float on the water surface. When the water in the water tank 2 drops below the arc-shaped connecting plate 7, the buoyancy rod 5 will drop with the horizontal plane and at the same time will move away from one side of the arc-shaped connecting plate 7. After the buoyancy rod 5 drops, the resistance to the connecting rod 6 will be released, so the connecting rod 6 will move downward;

[0028] When the buoyancy rod 5 moves down with the water, one of the connecting rods 6 and the L-shaped fixing rod 20 moves down, and the L-shaped fixing rod 20 presses the alarm 17. After pressing the alarm 17, the alarm 17 continues to sound an alarm to remind the surrounding staff that the water level has dropped below the warning line, and the other connecting rod 6 moves downward through the L-shaped fixing rod 20 to press the start button 22. The triggered start button 22 controls the air pump 11 to start, and the air pump 11 enters and exits gas into the gas pipe 10 and the sleeve 8;

[0029] When the sleeve 8 is continuously filled with gas, the gas will squeeze the airbag 9 due to the lack of an air outlet. After the airbag 9 is squeezed, the water in the airbag 9 will be transferred to the water tank 2 along the inside of the arc-shaped connecting plate 7. When the water in the water tank 2 gradually rises and the buoyancy rod 5 moves up to one side of the arc-shaped connecting plate 7, the buoyancy rod 5 blocks one side of the arc-shaped connecting plate 7, so that the water cannot flow into the water tank 2 temporarily. At the same time, the buoyancy rod 5 will squeeze the connecting rod 6 again after moving up, so that one of the L-shaped fixing rods 20 is away from the start button 22.

[0030] After releasing the start button 22, the air pump 11 can be interrupted and stopped. After the other L-shaped fixing rod 20 releases the pressure on the alarm 17, the alarm 17 will continue to sound the alarm until the staff finds it. The air bag 9 replenishes water in the water tank 2 to ensure that there is water in the water tank 2 before the staff arrives, so as to avoid the water tank 2 from drying out due to the staff's late discovery.

[0031] See also Figure 2 and Figure 4 Two arc-shaped limit rods 3 are fixedly installed on the inner wall of the water tank 2, the connecting rod 6 is plugged into the arc-shaped limit rod 3 and the bottom end of the connecting rod 6 is against the outer wall of the buoyancy rod 5, the buoyancy rod 5 is located between the arc-shaped limit rod 3 and the water tank 2, and the buoyancy rod 5 is located on one side of the arc-shaped connecting plate 7.

[0032] The arc-shaped limit rod 3 limits the buoyancy rod 5 so that the buoyancy rod 5 can only slide along the shape of the arc-shaped limit rod 3, preventing the buoyancy rod 5 from floating to the top of the water tank 2 after the water tank 2 is filled with water. The connecting rod 6 is plugged into the arc-shaped limit rod 3 so that the connecting rod 6 can slide vertically, preventing the connecting rod 6 from being offset.

[0033] See also Figure 4The arc-shaped connecting plate 7 is provided with a chamber 19 , the water tank 2 is provided with a through groove 18 , the outer wall of the arc-shaped connecting plate 7 is fixedly connected to the inner wall of the through groove 18 , and the buoyancy rod 5 abuts against the outlet of the chamber 19 .

[0034] Water enters the chamber 19 and then passes through the through groove 18 into the water tank 2. The through groove 18 provides space for the arc-shaped connecting plate 7 to enter the water tank 2. When the water in the water tank 2 is heated, the arc-shaped connecting plate 7 can block the chamber 19 to prevent the heat in the water tank 2 from entering the chamber 19 and the airbag 9. At the same time, the heated part is located below the water tank 2, so the water tank 2 is directly heated, and the sleeve 8 will not be heated to affect the sleeve 8.

[0035] See also Figure 3 One end of the air pump 11 is fixedly connected to an L-shaped transmission pipe 14 , and one end of the L-shaped transmission pipe 14 away from the air pump 11 is fixedly connected to an air collecting hood 16 , and a plurality of whistles 13 are arranged below the air collecting hood 16 .

[0036] When the water in the airbag 9 is squeezed out, the interior of the sleeve 8 is filled with gas, and then the air pump 11 extracts the gas in the sleeve 8, and discharges the gas to the gas collecting hood 16 through the L-shaped transmission pipe 14, and then discharges the gas into the air through the gas collecting hood 16. After the gas is discharged from the gas collecting hood 16, it will first blow into multiple whistles 13, and then the whistles 13 will make a sound to remind the staff that there is no water in the airbag 9.

[0037] See also Figure 3 A bracket 15 is fixedly mounted on the outer wall of the sleeve 8 , the air pump 11 is fixedly mounted on the top of the bracket 15 , and a plurality of whistles 13 are fixedly mounted on the inner bottom wall of the bracket 15 .

[0038] The bracket 15 is fixed to one side of the sleeve 8 and is used to support the air pump 11 and the whistle 13 so that the air pump 11 can run more stably.

[0039] See also Figure 2 A blocking plate 4 is fixedly connected between the outer walls of the two arc-shaped limit rods 3, the outer wall of the blocking plate 4 is fixedly connected to the inner wall of the water tank 2, and a distance is left between the arc-shaped limit rod 3 and the inner wall of the water tank 2.

[0040] The blocking plate 4 blocks one side of the arc-shaped limiting rod 3 to prevent the buoyancy rod 5 from sliding out from one side of the arc-shaped limiting rod 3 , and the gap between the arc-shaped limiting rod 3 and the water tank 2 facilitates the sliding of the buoyancy rod 5 .

[0041] See also Figure 2 and Figure 5 A fixing plate 12 is fixedly mounted on the outer wall of the water tank 2 , and a start button 22 and an alarm 17 are both fixedly mounted on the top of the fixing plate 12 .

[0042] The fixing plate 12 supports and fixes the start button 22 and the alarm 17 on one side of the water tank 2 , ensuring that it corresponds to the L-shaped fixing rod 20 , making it convenient to press the L-shaped fixing rod 20 .

[0043] See also Figure 5 A circular pressing plate 21 is fixedly installed at the bottom end of the L-shaped fixing rod 20, wherein one circular pressing plate 21 corresponds to the alarm 17, and the other circular pressing plate 21 corresponds to the start button 22.

[0044] The circular pressing plate 21 enlarges the contact area between the L-shaped fixing rod 20 and the start button 22 and the alarm 17, reduces the impact of the L-shaped fixing rod 20 on the start button 22 and the alarm 17, and avoids damage to the start button 22 and the alarm 17 due to pressing.

[0045] Working principle:

[0046] The buoyancy rod 5 is hollow inside, so that the buoyancy rod 5 has buoyancy and can float on the water surface. When the water in the water tank 2 drops below the arc-shaped connecting plate 7, the buoyancy rod 5 will drop with the horizontal plane and at the same time will move away from one side of the arc-shaped connecting plate 7. After the buoyancy rod 5 drops, the resistance to the connecting rod 6 will be released, so the connecting rod 6 will move downward;

[0047] When the buoyancy rod 5 moves down with the water, one of the connecting rods 6 and the L-shaped fixing rod 20 moves down, and the L-shaped fixing rod 20 presses the alarm 17. After pressing the alarm 17, the alarm 17 continues to sound an alarm to remind the surrounding staff that the water level has dropped below the warning line, and the other connecting rod 6 moves downward through the L-shaped fixing rod 20 to press the start button 22. The triggered start button 22 controls the air pump 11 to start, and the air pump 11 enters and exits gas into the gas pipe 10 and the sleeve 8;

[0048] When the sleeve 8 is continuously filled with gas, the gas will squeeze the airbag 9 due to the lack of an air outlet. After the airbag 9 is squeezed, the water in the airbag 9 will be transferred to the water tank 2 along the inside of the arc-shaped connecting plate 7. When the water in the water tank 2 gradually rises and the buoyancy rod 5 moves up to one side of the arc-shaped connecting plate 7, the buoyancy rod 5 blocks one side of the arc-shaped connecting plate 7, so that the water cannot flow into the water tank 2 temporarily. At the same time, the buoyancy rod 5 will squeeze the connecting rod 6 again after moving up, so that one of the L-shaped fixing rods 20 is away from the start button 22.

[0049] After releasing the start button 22, the air pump 11 can be interrupted and stopped. After the other L-shaped fixing rod 20 releases the pressure on the alarm 17, the alarm 17 will continue to sound the alarm until the staff finds it. The air bag 9 replenishes water in the water tank 2 to ensure that there is water in the water tank 2 before the staff arrives, so as to avoid the water tank 2 from drying out due to the staff's late discovery.

[0050] When the water in the airbag 9 is squeezed out, the interior of the sleeve 8 is filled with gas, and then the air pump 11 extracts the gas in the sleeve 8, and discharges the gas to the gas collecting hood 16 through the L-shaped transmission pipe 14, and then discharges the gas into the air through the gas collecting hood 16. After the gas is discharged from the gas collecting hood 16, it will first blow into multiple whistles 13, and then the whistles 13 will make a sound to remind the staff that there is no water in the airbag 9.

Claims

1. A condensing steam boiler with dry burning prevention, comprising a condensing steam boiler (1) and a water tank (2), characterized in that: A buoyancy rod (5) is arranged inside the water tank (2); a sleeve (8) is installed on the inner wall of the condensing steam boiler (1); an air bag (9) is connected to the inner wall of the sleeve (8); an arc-shaped connecting plate (7) is connected between the air bag (9) and the water tank (2); an air pump (11) is arranged on one side of the sleeve (8); an air supply pipe (10) is connected to one end of the air pump (11); two connecting rods (6) are plugged into the water tank (2); an L-shaped fixing rod (20) is installed on the outer wall of the connecting rod (6); a start button (22) electrically connected to the air pump (11) is arranged below one of the L-shaped fixing rods (20); and an alarm (17) is arranged below the other L-shaped fixing rod (20).

2. A dry burning prevention condensing steam boiler according to claim 1, characterized in that: Two arc-shaped limit rods (3) are installed on the inner wall of the water tank (2); the connecting rod (6) is plugged into the arc-shaped limit rod (3) and the bottom end of the connecting rod (6) is against the outer wall of the buoyancy rod (5); the buoyancy rod (5) is located between the arc-shaped limit rod (3) and the water tank (2); and the buoyancy rod (5) is located on one side of the arc-shaped connecting plate (7).

3. A dry burning prevention condensing steam boiler according to claim 2, characterized in that: The arc-shaped connecting plate (7) is provided with a chamber (19), the water tank (2) is provided with a through groove (18), the outer wall of the arc-shaped connecting plate (7) is connected to the inner wall of the through groove (18), and the buoyancy rod (5) abuts against the outlet of the chamber (19).

4. A dry burning prevention condensing steam boiler as claimed in claim 3, characterized in that: One end of the air pump (11) is connected to an L-shaped transmission pipe (14), and one end of the L-shaped transmission pipe (14) away from the air pump (11) is connected to an air collecting hood (16), and a plurality of whistles (13) are arranged below the air collecting hood (16).

5. The anti-dry burning condensing steam boiler according to claim 4, characterized in that: A bracket (15) is installed on the outer wall of the sleeve (8), the air pump (11) is installed on the top of the bracket (15), and a plurality of whistles (13) are installed on the inner bottom wall of the bracket (15).

6. A dry burning prevention condensing steam boiler as claimed in claim 5, characterized in that: A blocking plate (4) is connected between the outer walls of the two arc-shaped limiting rods (3); the outer wall of the blocking plate (4) is connected to the inner wall of the water tank (2); and a distance is left between the arc-shaped limiting rod (3) and the inner wall of the water tank (2).

7. The anti-dry burning condensing steam boiler according to claim 6, characterized in that: A fixing plate (12) is installed on the outer wall of the water tank (2), and the start button (22) and the alarm (17) are both installed on the top of the fixing plate (12).

8. The anti-dry burning condensing steam boiler according to claim 7, characterized in that: A circular pressing plate (21) is installed at the bottom end of the L-shaped fixing rod (20), wherein one of the circular pressing plates (21) corresponds to the alarm (17), and the other circular pressing plate (21) corresponds to the start button (22).

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