CN211920936U

CN211920936U - Eddy deaerator

Info

Publication number: CN211920936U
Application number: CN202020500109.2U
Authority: CN
Inventors: 王建龙
Original assignee: Tianjin Sanpo Heat Energy Engineering Co ltd
Current assignee: Li Jinsong
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2020-11-13
Anticipated expiration: 2030-04-08

Abstract

The utility model provides a vortex deaerator, which comprises a tank body, a top cover and a gas collecting pipe; the middle part of the tank body is of a cylindrical structure, the top of the tank body is provided with a flange disc for connecting a top cover, and the bottom of the tank body is an arc-shaped plug; the upper part of the cylindrical structure is tangentially provided with a water inlet, and the lower part of the cylindrical structure is provided with a water outlet; a water inlet pipe is welded at the water inlet and is of a horn-shaped structure; a water outlet pipe is welded at the water outlet; the middle part of the flange disc is provided with a conical fixing piece extending upwards; the conical fixing piece is used for fixing the gas collecting pipe; the arc shutoff department of jar body is equipped with the trompil, and trompil department welding has the blow off pipe, and the blow off pipe corresponds and is equipped with the valve. The vortex deaerator of the utility model has the advantages of simple structure, small volume, convenient arrangement, space saving and reduced capital investment; can continuously remove oxygen, carbon dioxide and other gases in the system and can prevent the corrosion of equipment and pipe networks.

Description

Eddy deaerator

Technical Field

The utility model belongs to the oxygen-eliminating device field especially relates to a vortex oxygen-eliminating device.

Background

How to effectively prevent the corrosion of metal materials is a practical problem of ensuring the service life of a hot water boiler and a heating system thereof, and the theory of the steam boiler supplying water to remove oxygen and prevent corrosion is continued to be used for years due to the fact that the understanding of the corrosion mechanism of the hot water boiler and the heating system thereof by people is insufficient and is often influenced by inertial thinking, and the aim of preventing the corrosion of a pipe network system can be achieved as long as the supplying water is removed with oxygen and the content of the supplying water dissolved with oxygen is controlled.

In fact, the corrosion of the hot water boiler and its heating system is the coexistence of oxygen corrosion and acid (carbon dioxide) corrosion, the latter accelerating the former.

No matter which existing deoxidizing method is adopted, even if the dissolved oxygen content of the make-up water is less than or equal to 0.1mg/L, the hot water boiler and the heating system thereof cannot achieve better anti-corrosion effect fundamentally. The reason for this is that the dissolved oxygen content in the circulating water of the heating system depends on whether the heating circulating system and the water supply system are tightly sealed. If there is a leak in the heating system (in fact, leakage from the heating system is inevitable), a large amount of air enters the system from the negative pressure side of the water pump during operation, resulting in severe oxygen corrosion of the heating system. Secondly, because the hot water boiler and the heating system thereof not only have oxygen corrosion in operation, often oxygen corrosion and carbon dioxide corrosion coexist, and the purpose of complete corrosion prevention can not be achieved only by removing oxygen.

In order to solve the problem of corrosion of metal materials of a hot water boiler and a heating system thereof, a deaerator capable of continuously removing dissolved oxygen and carbon dioxide acid gas in a pipe network system (particularly a secondary side pipe network system) is needed urgently.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a vortex deaerator to overcome the above-mentioned drawbacks in the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the vortex deaerator comprises a tank body, a top cover and a gas collecting pipe; the middle part of the tank body is of a cylindrical structure, the top of the tank body is provided with a flange disc for connecting a top cover, and the bottom of the tank body is an arc-shaped plug;

the upper part of the cylindrical structure is tangentially provided with a water inlet, and the lower part of the cylindrical structure is provided with a water outlet; a water inlet pipe is welded at the water inlet and is of a horn-shaped structure; a water outlet pipe is welded at the water outlet;

the middle part of the flange disc is provided with a conical fixing piece extending upwards; the conical fixing piece is used for fixing the gas collecting pipe; the arc shutoff department of jar body is equipped with the trompil, and trompil department welding has the blow off pipe, and the blow off pipe corresponds and is equipped with the valve.

Furthermore, a sealing plate is welded on the gas collecting pipe, and the part below the sealing plate is in threaded connection with the conical fixing piece; the gas collecting pipe is arranged at the part inside the tank body, the surface of the gas collecting pipe is provided with a plurality of gas collecting holes, and the bottom of the gas collecting pipe is provided with a filter screen; and an exhaust valve is arranged at the top of the gas collecting pipe.

Further, a sealing ring is arranged between the sealing plate and the conical fixing piece.

Further, the top cover is conical, and a flange connecting piece corresponding to the flange disc at the top of the tank body is arranged at the bottom of the top cover; the top of the top cover is provided with a through hole, and a fixed pipe for assisting in fixing the gas collecting pipe is welded in the through hole; the fixed pipe is provided with internal threads, the gas collecting pipe is correspondingly provided with external threads, and the fixed pipe is in threaded connection with the gas collecting pipe.

Further, the gas collecting pipe is positioned at the axis of the tank body; the gas collecting pipe is sequentially connected with the conical fixing piece, the fixing pipe and the exhaust valve from the interior of the tank body; the fixed pipe is also used for pressing the sealing plate sealing ring on the gas collecting pipe to the top of the conical fixing piece to ensure sealing.

Furthermore, the lower end of the gas collecting pipe and the bottom of the water outlet are positioned on the same horizontal plane.

Furthermore, the water inlet is arranged at a position close to the end part on one side of the cylindrical structure.

Furthermore, the caliber of the water outlet is larger than that of the water inlet.

Further, the water outlet and the water inlet are arranged on the same side; the water outlet is arranged along the tangential direction.

Compared with the prior art, the utility model discloses following advantage has:

1. the device is applied to a hot water boiler and a heat pipe network system (including a secondary side pipe network system), can continuously remove oxygen, carbon dioxide and other gases in the system, and can prevent equipment and pipe networks from being corroded.

2. The air-resistance heating system solves the problem that the air resistance in the heating system causes the system to be maladjusted, removes an air cushion formed between a fluid medium and a heat exchange surface due to air inclusion, thins a fluid heat transfer boundary layer, improves the heat transfer efficiency and saves energy.

3. No moving parts and quick-wear parts, no need of daily operation, maintenance and repair, high reliability of the equipment, long service life and very stable performance.

4. Simple structure, small volume, convenient arrangement, space saving and reduced capital investment.

5. The method has wide application, and can complete liquid clarification, slurry concentration, solid particle classification, classification and washing, liquid degassing, separation of immiscible liquids and the like. Nowadays, with the change of industrial technology, the vortex deaerator can be widely applied to the fields of chemical industry, petroleum, light industry, environmental protection, food, medicine, textile, biological engineering and the like.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic view of a tank body of a vortex deaerator according to an embodiment of the present invention;

fig. 2 is a schematic view of a top cover according to an embodiment of the present invention;

fig. 3 is a schematic view of a sealing plate portion of a gas collecting tube according to an embodiment of the present invention;

fig. 4 is a schematic view of a hot water boiler and a hot-water pipe network system according to an embodiment of the present invention.

Description of reference numerals:

1. a tank body; 2. a water inlet pipe; 3. a water outlet pipe; 4. a gas collecting pipe; 5. a blow-off pipe; 6. a sealing plate; 7. a seal ring; 8. a top cover; 9. a fixed tube; 101. a flange disk; 102. a tapered fixture.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the vortex deaerator comprises a tank body 1, a top cover 8 and a gas collecting pipe 4; the middle part of the tank body 1 is of a cylindrical structure, the top part of the tank body is provided with a flange disc 101 for connecting a top cover 8, and the bottom part of the tank body is an arc-shaped plug;

the upper part of the cylindrical structure is tangentially provided with a water inlet, and the lower part of the cylindrical structure is provided with a water outlet; a water inlet pipe 2 is welded at the water inlet, and the water inlet pipe 2 is of a horn-shaped structure; a water outlet pipe 3 is welded at the water outlet;

the middle part of the flange disc 101 is provided with a conical fixing piece 102 extending upwards; the conical fixing piece 102 is used for fixing the gas collecting pipe 4; the arc shutoff department of jar body 1 is equipped with the trompil, and trompil department welding has blow off pipe 5, and blow off pipe 5 corresponds and is equipped with the valve.

As shown in fig. 3, a sealing plate 6 is welded on the gas collecting pipe 4, and a part below the sealing plate 6 is in threaded connection with the conical fixing member 102; the gas collecting pipe 4 is arranged at the part inside the tank body 1, the surface of the gas collecting pipe is provided with a plurality of gas collecting holes, and the bottom of the gas collecting pipe is provided with a filter screen; and an exhaust valve is arranged at the top of the gas collecting pipe 4.

As shown in fig. 3, a sealing ring 7 is further provided between the sealing plate 6 and the conical fixing member 102.

As shown in fig. 2, the top cover 8 is conical, and the bottom of the top cover is provided with a flange connecting piece corresponding to the flange disc 101 at the top of the tank body 1; the top of the top cover 8 is provided with a through hole, and a fixing pipe 9 for assisting in fixing the gas collecting pipe 4 is welded in the through hole; the fixed pipe 9 is provided with internal threads, the gas collecting pipe 4 is correspondingly provided with external threads, and the fixed pipe 9 is in threaded connection with the gas collecting pipe 4.

The gas collecting pipe 4 is positioned at the axis of the tank body 1; the gas collecting pipe 4 is sequentially connected with the conical fixing piece 102, the fixing pipe 9 and the exhaust valve from the inside of the tank body 1; the fixing tube 9 is also used for pressing the sealing plate 6 and the sealing ring 7 on the gas collecting tube 4 on the top of the conical fixing piece 102 to ensure sealing.

The lower end of the gas collecting pipe 4 and the bottom of the water outlet are positioned on the same horizontal plane.

The water inlet is arranged at a position close to the end part on one side of the cylindrical structure.

The caliber of the water outlet is larger than that of the water inlet.

The water outlet and the water inlet are arranged on the same side; the water outlet is arranged along the tangential direction.

According to the Euler equation, the static pressure at the axle center of the vortex deaerator is expressed as

P＝P₀-2ρU²/2gR²

Wherein P is axial static pressure, P₀Static pressure at the wall of the device, R is the radius of the vortex deaerator, and U is the tangential speed at the wall of the vortex deaerator. The above formula shows that the static pressure P at the axle center of the vortex deaerator is higher than the static pressure P at the wall₀The hydrodynamic head at the wall is 2 times lower.

The principle of the vortex deaerator for deaerating is that according to the fluid mechanics two-phase flow principle and the vortex separation principle, a physical method is adopted to enable fluid (gas-liquid two-phase mixed fluid) to tangentially enter the vortex deaerator from the periphery of the upper portion of the vortex deaerator at a certain pressure, and then strong rotary motion is generated to form a vortex. Because of density difference between gas and liquid in the fluid, the centrifugal force, centripetal buoyancy and fluid drag force are different, the liquid is discharged through the low flow port of the vortex deaerator under the action of centrifugal sedimentation, and the gas drifts to the gas collecting pipe of the low-pressure area at the center along the radial direction of the vortex deaerator and escapes from the top.

How to prevent effectively that metal material corrodes is the actual problem of guaranteeing boiler and its heating system life, and the effective countermeasure of preventing boiler and its heating system metal material from corroding is: the dissolved oxygen and carbon dioxide acid gas in the pipe network system (especially the secondary side pipe network system) is continuously removed.

As shown in fig. 4

Characteristics of eddy deaerator

3. Because of the solid-liquid separation function, the device also has the function of removing fine silt in fluid to a certain extent.

4. No moving parts and quick-wear parts, no need of daily operation, maintenance and repair, high reliability of the equipment, long service life and very stable performance.

5. No need of special power, low energy consumption, low operation cost and high water treatment capacity.

6. Simple structure, small volume, convenient arrangement, space saving and reduced capital investment.

7. The method has wide application, and can complete liquid clarification, slurry concentration, solid particle classification, classification and washing, liquid degassing, separation of immiscible liquids and the like. Nowadays, with the change of industrial technology, the vortex deaerator can be widely applied to the fields of chemical industry, petroleum, light industry, environmental protection, food, medicine, textile, biological engineering and the like.

The design parameters of the SPW type vortex deaerator are as follows:

1. flow range: 6-1950M³/H

2. Working pressure range: 0.25MPa to 1.0MPa, and the maximum working pressure is 1.6MPa

3. Medium temperature range: 5-150 DEG C

Technical performance of vortex deaerator

The vortex deaerator has the main function of removing gas in liquid, and is particularly suitable for deaerating (removing oxygen and other gases in water) in hot water boilers and heating systems thereof.

1. Primary side and secondary side pipe network system

The existing oxygen removal methods and apparatus can only remove oxygen for the primary side (heat source apparatus side). However, oxygen corrosion and acid corrosion of a secondary side (heat exchange side) pipe network system are more serious, and the existing oxygen removing equipment is not designed and used for the secondary side pipe network system.

As shown in fig. 4, the vortex deaerator can be used for deaerating primary side or make-up water, and deaerating in a secondary side system, and has better anticorrosion effect when used.

2. Not only remove O₂And CO is removed₂To ensure the equipment and system to avoid corrosion

Because the hot water boiler and the heating system thereof not only have oxygen corrosion in operation, but also often have the coexistence of oxygen corrosion and carbon dioxide corrosion, the purpose of comprehensive corrosion resistance can not be achieved only by removing oxygen.

The existing oxygen removal method only aims at dissolved oxygen and cannot remove other gases.

The vortex deaerator can remove oxygen, carbon dioxide gas and other gases, and can comprehensively and effectively prevent equipment and system pipe networks from being corroded.

3. Most of the existing deaerators need energy consumption (heat energy, electric energy and the like).

The vortex deaerator deaerates by utilizing the physical principle, does not need to be equipped with power specially, and has low energy consumption, low operation cost and large water treatment capacity.

4. Most of the existing deaerators need to be attended by personnel, operated daily, maintained and the like, and some large deaerators need to be placed in special equipment rooms.

The vortex deaerator has no moving parts and wearing parts, does not need to be attended by personnel, does not need to be maintained by daily operation, has small occupied area and is flexible in installation position.

5. Most of the existing deaerators are controlled by the water level of a deaerating water tank, and generally cannot realize continuous operation.

The vortex deaerator can continuously deaerate the system water along with the water circulation system and automatically operates.

6. The existing deaerator has higher requirement on water quality, a filtering device is generally required to be additionally arranged before the deaerator, and filtered water can enter the deaerator to be deaerated.

The vortex deaerator has a certain decontamination function while deaerating due to the solid-liquid separation function of the vortex deaerator, and can remove fine silt in fluid.

The vortex deaerator is connected to a main water return pipe (see fig. 4) at the inlet of a circulating pump of a heating system by adopting a series connection method, the diameter of a bypass pipe is the same as that of the main water return pipe, all return water flows through the vortex deaerator during normal operation, and a valve of the bypass pipeline is closed.

The vortex deaerator is an operation-free and maintenance-free device, does not need special operation during operation, and only needs to regularly discharge sewage and ensure the smoothness of the exhaust valve. Generally, the operation is carried out for 15-30 days, and the pollution discharge is carried out once.

The liquid deaerating and degassing device is used for deaerating and degassing liquid, wherein the liquid tangentially enters the tank body 1 from a water inlet under certain pressure to generate strong rotary motion to form vortex, and dissolved oxygen and other gases in the liquid enter the gas collecting pipe 4 through the holes in the gas collecting pipe 4 and the filter screen at the lower end under the action of centrifugal sedimentation due to the fact that density difference exists between the gas and the liquid and the centrifugal force, centripetal buoyancy and fluid drag force are different, and finally the dissolved oxygen and the other gases are discharged from an exhaust port. The liquid after deoxygenation flows out from the water outlet. The lower part of the tank body 1 is provided with a sewage discharge pipe 5 for cleaning the inside of the container and discharging sewage.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Vortex oxygen-eliminating device, its characterized in that: comprises a tank body (1), a top cover (8) and a gas collecting pipe (4); the middle part of the tank body (1) is of a cylindrical structure, the top part of the tank body is provided with a flange disc (101) for connecting a top cover (8), and the bottom part of the tank body is an arc-shaped plug;

the upper part of the cylindrical structure is tangentially provided with a water inlet, and the lower part of the cylindrical structure is provided with a water outlet; a water inlet pipe (2) is welded at the water inlet, and the water inlet pipe (2) is of a horn-shaped structure; a water outlet pipe (3) is welded at the water outlet;

the middle part of the flange disc (101) is provided with a conical fixing piece (102) extending upwards; the conical fixing piece (102) is used for fixing the gas collecting pipe (4); the arc shutoff department of jar body (1) is equipped with the trompil, and trompil department welding has blow off pipe (5), and blow off pipe (5) correspond and are equipped with the valve.

2. The vortex oxygen remover of claim 1, wherein: a sealing plate (6) is welded on the gas collecting pipe (4), and the part below the sealing plate (6) is in threaded connection with the conical fixing piece (102); the gas collecting pipe (4) is arranged at the part inside the tank body (1), the surface of the gas collecting pipe is provided with a plurality of gas collecting holes, and the bottom of the gas collecting pipe is provided with a filter screen; and an exhaust valve is arranged at the top of the gas collecting pipe (4).

3. The vortex oxygen remover of claim 2, wherein: and a sealing ring (7) is also arranged between the sealing plate (6) and the conical fixing piece (102).

4. The vortex oxygen remover of claim 3, wherein: the top cover (8) is conical, and the bottom of the top cover is provided with a flange connecting piece corresponding to a flange disc (101) at the top of the tank body (1); the top of the top cover (8) is provided with a through hole, and a fixing pipe (9) for assisting in fixing the gas collecting pipe (4) is welded in the through hole; the fixed pipe (9) is provided with internal threads, the gas collecting pipe (4) is correspondingly provided with external threads, and the fixed pipe (9) is in threaded connection with the gas collecting pipe (4).

5. The vortex oxygen remover of claim 4, wherein: the gas collecting pipe (4) is positioned at the axis of the tank body (1); the gas collecting pipe (4) is sequentially connected with the conical fixing piece (102), the fixing pipe (9) and the exhaust valve from the inside of the tank body (1); the fixed pipe (9) is also used for pressing a sealing ring (7) of a sealing plate (6) on the gas collecting pipe (4) to the top of the conical fixing piece (102) to ensure sealing.

6. The vortex oxygen remover of claim 1, wherein: the lower end of the gas collecting pipe (4) and the bottom of the water outlet are positioned on the same horizontal plane.

7. The vortex oxygen remover of claim 1, wherein: the water inlet is arranged at a position close to the end part on one side of the cylindrical structure.

8. The vortex oxygen remover of claim 1, wherein: the caliber of the water outlet is larger than that of the water inlet.

9. The vortex oxygen remover of claim 8, wherein: the water outlet and the water inlet are arranged on the same side; the water outlet is arranged along the tangential direction.