Automatic exhaust device of deaerator

Abstract

The utility model discloses an automatic exhaust device of a deaerator, relates to the related technical field of deaerators, and aims to solve the problem that in the prior art, the gas exhaust end of the deaerator is directly connected with an external pipeline, and gas possibly does not flow in a preset direction and flows back into the deaerator, so that the interference to the deaeration process is avoided. Middle action pieces are arranged in the middle pipe body, the side connecting frames and the outer connecting frames. The middle acting piece comprises a sealing table and a push rod, the sealing table is embedded into the conical hole, the push rod penetrates through the side connecting frame, extends into the outer connecting frame and is fixedly provided with a connecting disc, a sealing membrane is arranged between the connecting disc and the outer connecting frame, and the sealing membrane is fixed to the connecting disc and the outer connecting frame; an air inlet propelling inner cavity is formed in the outer connecting frame along one side of the connecting disc and one side of the sealing membrane, and a propelling air inlet pipe is installed at the lower end of the outer connecting frame along the lower end of the air inlet propelling inner cavity.

Description

Technical Field

[0001] The utility model relates to the technical field related to deaerators, in particular to an automatic exhaust device for a deaerator. Background Art

[0002] A deaerator is a key component of boilers and heating systems. Its primary function is to remove dissolved oxygen from boiler feedwater to prevent and reduce corrosion of boiler feedwater pipes, economizers, and other ancillary equipment. The operating principle of a deaerator is primarily based on Henry's Law and Dalton's Law. Henry's Law states that at a certain temperature, when the gas dissolved in water and the gas released from the water are in dynamic equilibrium, the amount of gas dissolved per unit volume of water is proportional to the partial pressure of that gas above the water surface. According to Henry's Law, if the actual partial pressure of a gas above the water surface is less than the equilibrium pressure corresponding to the dissolved gas in the water, the gas will release from the water due to the unbalanced pressure difference until a new equilibrium is reached.

[0003] During the operation of the deaerator, a large amount of gas will be generated, which mainly includes oxygen and other gases dissolved in the feed water. If these gases cannot be discharged in time, the deoxygenation effect will be affected, resulting in an excessively high oxygen content in the boiler water, which will cause corrosion and scaling problems. Therefore, the exhaust function of the deaerator is crucial. For example, the Chinese authorized patent with announcement number CN215523252 U (a continuous exhaust system for a deaerator) includes a plurality of exhaust branch pipes and an exhaust main pipe; the bottom of each exhaust branch pipe is connected to a continuous exhaust port of the deaerator, and the top of each exhaust branch pipe is connected to the exhaust main pipe, and the exhaust main pipe is tilted downward from one end to the other, and the highest end of the exhaust main pipe is provided with an exhaust outlet.

[0004] The above-mentioned existing technology has the function of exhausting oxygen and other gases dissolved in the feed water, but the gas exhaust end of the deaerator is directly connected to the external pipeline. The gas may not flow in the predetermined direction and flow back into the deaerator, thereby avoiding interference with the deoxygenation process. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic exhaust device for a deaerator, so as to solve the problem proposed in the above background technology that the gas exhaust end of the deaerator is directly connected to the external pipeline, and the gas may not flow in the predetermined direction and flow back into the deaerator, thereby avoiding interference with the deoxygenation process.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an automatic exhaust device for a deaerator, comprising a main exhaust pipe, the main exhaust pipe comprising an intermediate pipe body, an intermediate arc-shaped connecting plate being fixed obliquely inside the intermediate pipe body, and a tapered hole being formed through the intermediate arc-shaped connecting plate;

[0007] A side connecting frame is welded and fixed to one side of the outer portion of the intermediate tube body, an outer connecting frame is welded and fixed to the outer side of the side connecting frame, and an intermediate action member is provided inside the intermediate tube body, the side connecting frame and the outer connecting frame;

[0008] The intermediate action part includes a sealing platform and a push rod. The push rod is fixed to a side of the sealing platform close to the side connecting frame. The sealing platform is embedded in a conical hole. The push rod extends through the side connecting frame to the outer connecting frame and is fixed with a connecting disk. A sealing diaphragm is provided between the connecting disk and the outer connecting frame. The sealing diaphragm is fixed to the connecting disk and the outer connecting frame. An air intake propulsion cavity is formed inside the outer connecting frame along one side of the connecting disk and the sealing diaphragm. A propulsion intake pipe is installed at the lower end of the outer connecting frame along the lower end of the air intake propulsion cavity.

[0009] Preferably, a side leveling portion is integrally connected to a side of the exterior of the intermediate tube body close to the side connecting frame. The side leveling portion is located inside the side connecting frame, and a rectangular inner cavity is formed inside the side connecting frame.

[0010] Preferably, the outside of the push rod is rotatably connected to a connecting ring via a bearing, and a pressure spring is provided along the outside of the push rod between the connecting ring and the inner wall of the side connecting frame.

[0011] Preferably, an indicating inner cavity is formed inside the outer connecting frame along the other side of the connecting disk and the sealing diaphragm, and an indicating window is installed in the middle of the outer side of the front end surface of the outer connecting frame.

[0012] Preferably, a connecting column is fixed in the center of the outer side of the connecting disk, and a buffer disk is fixed on the outer side of the connecting column.

[0013] Preferably, an indicator arrow is fixed to the outer lower end of the connecting column, and the distance of the movement trajectory of the indicator arrow is less than the length of the indicator window.

[0014] Preferably, the main exhaust duct also includes an air intake pipe body and an exhaust pipe body, the air intake pipe body is integrally connected to the lower end of the intermediate pipe body, and the exhaust pipe body is integrally connected to the upper end of the intermediate pipe body, and the intermediate pipe body, the air intake pipe body and the exhaust pipe body are connected internally through the conical holes on the intermediate arc-shaped connecting plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In this utility model, automatic adjustment of the gas discharge volume is achieved through the design of the middle arc-shaped connecting plate and the conical hole, combined with the precise coordination of the middle actuating parts. When the gas volume increases, the sealing platform automatically moves away from the conical hole to ensure smooth gas discharge, significantly improving the exhaust efficiency. When the gas pressure is low or there is no force acting on it, the presence of the pressure spring allows the sealing platform to be inserted into the conical hole of the middle arc-shaped connecting plate, and the passage between the intake pipe body and the exhaust pipe body is blocked by the middle arc-shaped connecting plate. This solves the problem that the gas discharge end of the current deaerator is directly connected to the external pipeline, and the gas may not flow in the predetermined direction, but flow back into the deaerator, thereby avoiding interference with the deoxygenation process.

[0017] 2. The introduction of a pressure spring in this utility model provides the device with stable pressure regulation capabilities, maintaining stable pressure within the system at varying gas discharge rates. This not only avoids increased energy consumption due to pressure fluctuations but also extends the service life of the device.

[0018] 3. In this utility model, through the ingenious design of the indicator window and the indicator arrow, the operator can intuitively judge the pressure situation inside the device and take corresponding maintenance measures in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an automatic exhaust device for a deaerator of the present invention;

[0020] Figure 2 This is a front view of an automatic exhaust device for a deaerator according to the present invention;

[0021] Figure 3 This is a top view of an automatic exhaust device for a deaerator according to the present invention;

[0022] Figure 4 This is a cross-sectional view of the automatic exhaust device of a deaerator according to the present invention at line AA;

[0023] Figure 5 A cross-sectional view of a main exhaust pipe of an automatic exhaust device of a deaerator according to the present invention;

[0024] Figure 6 This is a structural schematic diagram of an intermediate action component of an automatic exhaust device of a deaerator according to the present invention.

[0025] In the figure: 1. Main exhaust duct; 2. Intermediate pipe body; 3. Intake pipe body; 4. Exhaust pipe body; 5. Intermediate arc-shaped connecting plate; 6. Conical hole; 7. Side leveling part; 8. Side connecting frame; 9. External connecting frame; 10. Intermediate actuating part; 11. Sealing platform; 12. Push rod; 13. Connecting plate; 14. Sealing diaphragm; 15. Rectangular inner cavity; 16. Pressure spring; 17. Intake propulsion inner cavity; 18. Indicator inner cavity; 19. Propulsion intake pipe; 20. Indicator window; 21. Connecting column; 22. Buffer plate; 23. Indicator arrow. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figure 1-6 , an embodiment provided by the utility model:

[0028] 1. Design of main exhaust pipe and middle arc connecting plate:

[0029] The main exhaust duct 1 comprises a central tube body 2, within which a central curved connecting plate 5 is fixed diagonally. The design of this connecting plate 5 allows for smooth flow changes during the exhaust process, reducing resistance. Furthermore, a tapered hole 6 is formed through this connecting plate 5, which, in conjunction with a blocking structure, allows for transitions between a blocked and flowing state. Furthermore, this design guides and accelerates the gas as it passes through, further improving exhaust efficiency.

[0030] The main exhaust duct 1 also includes an intake pipe body 3 and an exhaust pipe body 4. The intake pipe body 3 is integrally connected to the lower end of the intermediate pipe body 2, and the exhaust pipe body 4 is integrally connected to the upper end of the intermediate pipe body 2. The intermediate pipe body 2, the intake pipe body 3 and the exhaust pipe body 4 are connected internally through the conical hole 6 on the intermediate arc-shaped connecting plate 5.

[0031] 2. Side connection frame and external connection frame settings:

[0032] A side connecting frame 8 is welded to one side of the exterior of the intermediate tube body 2, and an outer connecting frame 9 is welded to the exterior of the side connecting frame 8. This integrated welded structure ensures the stability and reliability of the device. Furthermore, a side leveling portion 7 is integrally connected to the exterior of the intermediate tube body 2, near the side connecting frame 8. This side leveling portion 7 is located within the side connecting frame 8, forming a rectangular interior cavity 15 within the side connecting frame 8, providing ample space for the movement of the intermediate actuator 10.

[0033] 3. The middle action piece cooperates with the pressure spring:

[0034] The intermediate actuator 10 includes a sealing platform 11 and a push rod 12. The push rod 12 is fixed to the side of the sealing platform 11 near the side connecting frame 8. The sealing platform 11 is embedded in the tapered hole 6. The push rod 12 extends through the side connecting frame 8 into the outer connecting frame 9 and is fixed to a connecting plate 13. A sealing diaphragm 14 is provided between the connecting plate 13 and the outer connecting frame 9. The sealing diaphragm 14 is fixed to both the connecting plate 13 and the outer connecting frame 9. An air intake cavity 17 is formed inside the outer connecting frame 9 along one side of the connecting plate 13 and the sealing diaphragm 14. A propulsion inlet pipe 19 is installed at the lower end of the outer connecting frame 9 along the lower end of the air intake cavity 17. When the gas volume increases, the gas enters the air intake cavity 17 through the propulsion inlet pipe 19, pushing the connecting plate 13 to move, thereby driving the sealing platform 11 away from the tapered hole 6.

[0035] Meanwhile, a connecting ring is rotatably connected to the outside of push rod 12 via a bearing. A pressure spring 16 is provided along the outside of push rod 12 between the connecting ring and the inner wall of side connecting frame 8. The presence of pressure spring 16 drives sealing platform 11 to reseal conical hole 6 when gas discharge pressure decreases. The introduction of pressure spring 16 also provides the device with stable pressure regulation capability during gas discharge, ensuring stable pressure within the system under different gas discharge volumes.

[0036] 4. Connection column, buffer plate and indicator arrow settings:

[0037] A connecting post 21 is centrally secured to the outer side of the connecting plate 13. A buffer tray 22 is secured to the outer side of the connecting post 21. The design of the buffer tray 22 enhances the durability of the device. Furthermore, an indicator arrow 23 is secured to the lower end of the connecting post 21. The distance along which the indicator arrow 23 moves is less than the length of the indicator window 20. This design allows the operator to more accurately determine the pressure status within the device.

[0038] 5. Design of indicator cavity and indicator window:

[0039] An indicator cavity 18 is formed inside the outer connecting frame 9 along the other side of the connecting plate 13 and the sealing diaphragm 14. At the same time, an indicator window 20 is installed in the middle of the outer side of the front end surface of the outer connecting frame 9. The operator can judge the internal pressure by observing the position of the indicator arrow 23 through the indicator window 20.

[0040] Working principle: The gas discharge end of the deaerator is connected to the air inlet pipe body 3 and the propulsion air inlet pipe 19 through a tee.

[0041] During the initial stage of operation, when the amount of oxygen and other gases dissolved in the feed water discharged is small, the performance of the pressure spring 16 enables the sealing platform 11 to be inserted into the conical hole 6 of the middle arc-shaped connecting plate 5, and the passage between the intake pipe body 3 and the exhaust pipe body 4 is blocked by the middle arc-shaped connecting plate 5.

[0042] When the internal gas volume increases, the gas enters the intake propulsion cavity 17 through the propulsion intake pipe 19, pushing the connecting plate 13 to move, deforming the sealing diaphragm 14 and further compressing the pressure spring 16. Due to the movement of the push rod 12, the sealing platform 11 moves away from the tapered hole 6, allowing the intake pipe body 3 and the exhaust pipe body 4 to circulate, and the gas is discharged through the exhaust pipe body 4. The internal pressure can be determined by observing the position of the indicator arrow 23 through the indicator window 20.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An automatic exhaust device for a deaerator, comprising a main exhaust pipe (1), the main exhaust pipe (1) comprising an intermediate pipe body (2), characterized in that: A middle arc-shaped connecting plate (5) is fixed obliquely inside the middle tube body (2), and a tapered hole (6) is formed through the middle arc-shaped connecting plate (5); A side connecting frame (8) is welded and fixed to one side of the exterior of the intermediate tube body (2), an outer connecting frame (9) is welded and fixed to the exterior of the side connecting frame (8), and an intermediate action member (10) is provided inside the intermediate tube body (2), the side connecting frame (8) and the outer connecting frame (9); The intermediate action member (10) includes a sealing platform (11) and a push rod (12). The push rod (12) is fixed to a side of the sealing platform (11) close to the side connecting frame (8). The sealing platform (11) is embedded in the conical hole (6). The push rod (12) passes through the side connecting frame (8) and extends into the outer connecting frame (9) and is fixed with a connecting disk (13). A sealing diaphragm (14) is provided between the connecting disk (13) and the outer connecting frame (9). The sealing diaphragm (14) is fixed to the connecting disk (13) and the outer connecting frame (9). An air intake propulsion cavity (17) is formed inside the outer connecting frame (9) along one side of the connecting disk (13) and the sealing diaphragm (14). A propulsion air intake pipe (19) is installed at the lower end of the outer connecting frame (9) along the lower end of the air intake propulsion cavity (17).

2. The automatic exhaust device of a deaerator according to claim 1, characterized in that: A side leveling portion (7) is integrally connected to a side of the exterior of the intermediate tube body (2) close to the side connecting frame (8). The side leveling portion (7) is located inside the side connecting frame (8), and a rectangular inner cavity (15) is formed inside the side connecting frame (8).

3. The automatic exhaust device of a deaerator according to claim 2, characterized in that: The outside of the push rod (12) is rotatably connected to a connecting ring via a bearing, and a pressure spring (16) is provided along the outside of the push rod (12) between the connecting ring and the inner wall of the side connecting frame (8).

4. The automatic exhaust device of a deaerator according to claim 1, characterized in that: An indicating inner cavity (18) is formed inside the outer connecting frame (9) along the other side of the connecting disk (13) and the sealing diaphragm (14), and an indicating window (20) is installed in the middle of the outer side of the front end surface of the outer connecting frame (9).

5. The automatic exhaust device for a deaerator according to claim 4, characterized in that: A connecting column (21) is fixed in the center of the outer side of the connecting disk (13), and a buffer disk (22) is fixed on the outer side of the connecting column (21).

6. The automatic exhaust device of a deaerator according to claim 5, characterized in that: An indicator arrow (23) is fixed to the outer lower end of the connecting column (21), and the distance of the movement track of the indicator arrow (23) is less than the length of the indicator window (20).

7. The automatic exhaust device of a deaerator according to claim 1, characterized in that: The main exhaust pipe (1) further comprises an intake pipe body (3) and an exhaust pipe body (4); the intake pipe body (3) is integrally connected to the lower end of the intermediate pipe body (2); the exhaust pipe body (4) is integrally connected to the upper end of the intermediate pipe body (2); the intermediate pipe body (2), the intake pipe body (3) and the exhaust pipe body (4) are internally connected via a conical hole (6) on the intermediate arc-shaped connecting plate (5).

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