KR20230126273A - Air sealing damper for detecting and preventing leakage of sealing air - Google Patents

Abstract

The present invention relates to an air sealing damper, and more particularly, to an air sealing damper capable of maintaining an airtight state by supplying air for sealing in the damper to control the flow of exhaust gas, comprising an opening/closing detection unit and a sealing unit. It relates to an air sealing damper capable of detecting and preventing leakage of sealing air.
The present invention includes a damper body 100 having an inlet formed on the front portion and an outlet formed on the rear portion to form a flow path through which fluid is transported from the inlet side to the outlet side; a rotational shaft 200 rotatably coupled through the damper body 100 vertically and vertically; A pair of blades 300 that are spaced apart from each other on both sides around the rotation shaft and rotate simultaneously in conjunction with the rotation of the rotation shaft 200; a sealing air supply unit 400 installed on one side of the damper body 100 to supply sealing air to the space between the pair of blades 300; A sealing unit disposed so that one side thereof is adjacent to the outer circumference of the blade to prevent leakage of sealing air by contacting a pair of landing bars 110 protruding from the inner surface of the damper body 100 corresponding to the blade ( 500); and an opening/closing detection unit 600 installed on the other side of the damper body 100 to detect the degree of opening/closing of the blade 300; to provide an air sealing damper capable of detecting and preventing leakage of sealing air including there is.

Description

Air sealing damper for detecting and preventing leakage of sealing air}

The present invention relates to an air sealing damper, and more particularly, to an air sealing damper capable of maintaining an airtight state by supplying air for sealing in the damper to control the flow of exhaust gas, comprising an opening/closing detection unit and a sealing unit. It relates to an air sealing damper capable of detecting and preventing leakage of sealing air.

In general, a damper is a device installed in a flue such as a boiler or an air passage of an air conditioning device to block or open an internal flow path as necessary, to change the flow path of fluid or to prevent reverse flow of fluid. serves to prevent

In the case of a butterfly damper, to block the flow of fluid transported into the damper body or to prevent the backflow of fluid, the blade installed in the damper can be used as a blade made of soft material such as rubber or Teflon, or a blade made of metal can be used. However, in order to improve the blocking property, the blade is configured in an eccentric shaft type structure.

However, for a damper applied to control the flow of high-temperature fluid such as exhaust gas with a maximum temperature of 450°C, it is impossible to use blades made of soft materials such as rubber or Teflon, and blades having an eccentric shaft type are expensive. There is a problem with restrictions in using the blade made of parts.

Accordingly, in order to control the flow of a high-temperature fluid such as a scrubber system and exhaust gas containing a lot of sulfur oxides, sealing air having a higher pressure than the fluid is supplied between the two blades to form an air sealing part. An air sealing damper is used to ensure this.

Conventional air sealing dampers used leaf seals of 0.2 to 0.3 mm to prevent leakage between the blade and the landing bar, but inside the air sealing damper installed in a large size in the pipe through which the exhaust gas flows. As the blade of the blade comes into contact with high-temperature fluids including high-temperature exhaust gas containing sulfur oxides, there is a problem that it expands and a gap may be formed between the body sheet and the outer periphery of the blade. In addition, the leaf seal is welded to the blade and the landing bar. Due to the low precision in alignment between them, in order to solve this problem, a leaf seal formed of Hastelloy metal, which can maintain elasticity at high temperatures and has high corrosion resistance to sulfur oxides, has been developed.

However, in the case of ships, generator engines are not used continuously, but are used alternately, so that water vapor in the atmosphere and exhaust gas combine at low temperatures to generate highly corrosive sulfuric acid, and rainwater flows in from the top of the chimney and adheres to the inner wall of the pipe. There is a problem in that expensive Hastelloy metal must be replaced because it flows down like carbon oxide and accumulates on the landing bar of the damper, causing deformation and damage to the leaf seal.

On the other hand, there are cases where the damper is not completely closed due to foreign substances, and the actuator is installed on the upper part of the damper so that the position of the damper can be recognized. There is a problem in that it is difficult to recognize this because there is not even a difference of 1° depending on the size.

Therefore, it is possible to detect fine sealing air leakage of the air sealing damper so that the flow of fluid can be controlled by maintaining sufficient airtightness, and it can be used at high temperature to prevent leakage between the blade and the landing bar. Advantages of Hastelloy metal It is necessary to develop an air sealing damper capable of detecting and preventing leakage of sealing air by having an airtight means capable of maintaining the airtight seal.

Republic of Korea Patent Registration No. 10-1981066 (2019.05.16.)

The present invention has been made to solve the above problems, and an object of the present invention is to detect minute leakage of sealing air so as to maintain the airtightness of the sealing air in the damper in order to control the flow of fluid by maintaining sufficient airtightness. It is to provide an air sealing damper capable of detecting and preventing possible leakage of sealing air.

In addition, another object of the present invention is an air sealing that can be used at high temperature to prevent leakage between the blade and the landing bar and can detect and prevent leakage of sealing air by providing an airtight means that maintains the advantages of Hastelloy metal. to provide a damper.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, in the air sealing damper capable of detecting and preventing leakage of sealing air according to a preferred embodiment of the present invention, an inlet is formed on the front part and an outlet is formed on the rear part so that the inlet side a damper body 100 forming a passage through which fluid is transported toward the outlet; a rotational shaft 200 rotatably coupled through the damper body 100 vertically and vertically; A pair of blades 300 that are spaced apart from each other on both sides around the rotation shaft and rotate simultaneously in conjunction with the rotation of the rotation shaft 200; a sealing air supply unit 400 installed on one side of the damper body 100 to supply sealing air to the space between the pair of blades 300; A sealing unit disposed so that one side thereof is adjacent to the outer circumference of the blade to prevent leakage of sealing air by contacting a pair of landing bars 110 protruding from the inner surface of the damper body 100 corresponding to the blade ( 500); and an opening/closing detection unit 600 installed on the other side of the damper body 100 to detect an opening/closing degree of the blade 300.

At this time, the sealing unit 500 has a polygonal plate shape, one side is formed with a fastening hole 514 fastened to the blade 300, and the other side is bent downward to form a 'c'-shaped sealing member. Sealing member cover 510 in which the insertion groove 512 is formed; a sealing member 520 inserted into the sealing member insertion groove 512; And fastening means 530 for fastening the blade 300 and the sealing member cover 510 through the fastening hole 514; characterized in that it comprises a.

Here, the sealing member 520 is a ceramic rope capable of maintaining elasticity at a high temperature to minimize the effect of thermal deformation and thermal expansion due to high-temperature exhaust gas when in contact with the blade 300. do.

On the other hand, the open/close detection unit 600 is formed through one side of the damper body 100 and has an elastic member 640 to advance and retreat into the damper body by an elastic force. An indicator shaft 620; and a rotor 610 formed inside the damper body 100 so that one side interlocks with the indicator shaft 620 and the other side interlocks with the blade 300; An indicator body (630) having an indicator (650) indicating the degree of opening and closing of the blade (300) according to the degree of entry of the indicator shaft (620).

At this time, in the open/close detection unit 600, one side of the rotor 610 is supported by the blade 300 and the other side of the rotor 610 presses the indicator shaft 620 to protrude, so that the indicator 650 It is characterized in that can represent the degree of fine opening and closing of the blade (300).

In addition, in the rotor 610, the 'L'-shaped first sensing bar 612 and the 'ㅡ'-shaped second sensing bar 614 are formed at an angle of 90° to 120° with respect to the central axis. The first sensing bar 612 contacts the blade 300 and at the same time the second sensing bar 614 presses the indicator shaft 620 to determine the opening/closing degree of the blade 300. Characterized in that it is indicated by the indicator 650.

As described above, the air sealing damper capable of detecting and preventing leakage of sealing air according to the present invention has an effect of detecting and preventing leakage of fine sealing air that does not differ by 1 ° in angle. .

In addition, the air sealing damper that can detect and prevent leakage of sealing air can be used at high temperatures and has a sealing unit that maintains the advantages of Hastelloy metal to detect and prevent leakage of sealing air between the blade and the landing bar. There are advantages that can be

1 is a front view showing an air sealing damper capable of detecting and preventing leakage of sealing air according to the present invention.
2 is a plan view of an air sealing damper capable of detecting and preventing leakage of sealing air according to the present invention.
3 is a front view and a partially enlarged view of a sealing unit of an air sealing damper capable of detecting and preventing air leakage according to the present invention.
Figure 4 is an enlarged view of A in Figure 2;
5(a) to (b) are enlarged views of B in FIG. 2 .

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims.

With reference to the accompanying drawings below, specific details for the practice of the present invention will be described in detail. Like reference numbers refer to like elements, regardless of drawing, and "and/or" includes each and every combination of one or more of the recited items.

Although first, second, etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may also be the second component within the technical spirit of the present invention.

Terms used in this specification are for describing the embodiments and are not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. As used herein, "comprises" and/or "comprising" does not exclude the presence or addition of one or more other elements other than the recited elements.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used in a meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly specifically defined.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing an air sealing damper capable of detecting and preventing leakage of sealing air according to the present invention, and FIG. 2 is a plan view of an air sealing damper capable of detecting and preventing leakage of sealing air according to the present invention. .

1 and 2, the air sealing damper capable of detecting and preventing leakage of sealing air according to the present invention largely includes a damper body 100, a rotating shaft 200, a blade 300, and a sealing air supply unit ( 400), a sealing unit 500, and an open/close detection unit 600.

First, a hydraulic motor or pneumatic actuator may be provided as a driving means for manipulating the rotary shaft 200 on the outside of the damper body 100, and the hydraulic motor or pneumatic actuator controls the blade 300 by a control unit (not shown). Of course, the opening and closing operation may be performed automatically, and the opening and closing operation of the blade 300 may be manually operated by rotation of the handle provided with a handle (not shown).

The air sealing damper according to the present invention is preferably provided with a butterfly valve, and the butterfly valve is a valve that adjusts the flow rate of fluid flowing through the pipe by turning a plate-shaped valve disk disposed on the valve pipe, and has a simple structure. It is lightweight, quick to operate, and widely used for high pressure as well as low pressure valves.

As shown in Figure 1, the damper body 100 is a basic body of the air sealing damper of the present invention, an inlet through which fluid flows in is formed on the front side, and an outlet through which fluid is discharged is formed on the rear side. A flow path through which fluid is transferred from the inlet side to the outlet side is formed.

In addition, the damper body 100 has a cylindrical body having a diameter of 200 mm or more, and flanges are formed on the outer periphery of the front and rear parts where the inlet and outlet of the cylindrical body are formed, through pipes and flanges disposed on both sides of the flow path. configured to be combined.

In addition, the damper body 100 is provided with a landing bar 110 inside the damper body 100 so as to limit the rotation radius of the blade 300 by engaging with the outer circumference of the sealing unit 500 to be described later.

The landing bar 110 protrudes from the inner surface of the damper body 100 corresponding to the position of the blade 300 coupled to the rotating shaft 200, and is spaced apart from each other along the flow direction of the fluid. .

In addition, the landing bar 110 is preferably formed to correspond to the shape of the blade 300, and referring to FIG. 2, in the present invention, a pair of landing bars 110 have a pair of blades 300 As they are spaced apart from each other at an interval of , they are spaced apart from each other and protrude in different sizes on the inner surface of the damper body 100 in correspondence to the shape and position of the pair of blades 300 .

Next, the rotary shaft 200 is for providing rotational force so that the sealing unit 500 to be described later rotates inside the damper body 100, and is rotatably coupled through the damper body 100 vertically and vertically.

The rotating shaft 200 has blades 300 coupled to both sides of the rotating shaft 200, and an end of the rotating shaft 200 extending outside the damper body 100 provides rotational force such as an electric motor, a hydraulic actuator, or a pneumatic actuator It is connected to a driving force providing means to rotate by receiving rotational force from the driving force providing means (not shown), and as the rotary shaft 200 rotates, the blade 300 to be described later is interlocked and rotated.

Next, the blades 300 are formed as a pair, are spaced apart from each other on both sides around the rotation shaft 200, and are interlocked by the rotation of the rotation shaft 200 to rotate simultaneously.

In addition, the blade 300 is disposed at a position corresponding to the pair of landing bars 110, and the pair of blades 300 are rotated in conjunction with the rotation shaft 200, on the outer periphery of both sides of the blade 300. As the mounted sealing unit 500 contacts the landing bar 110, the rotation radius of the blade 300 is limited and the passage is closed.

At this time, as the blade 300 should be made of a material that has excellent corrosion resistance and is not easily deformed by high temperature and high pressure, the blade 300 is made of metal or stainless steel, more preferably stainless steel 304 or 316 It can be provided with the material of.

Next, the sealing air supply unit 400 is installed on one side of the damper body 100 to supply sealing air to the space between the pair of blades 300. Referring to FIG. 2, the sealing air supply unit 400 It is installed on one side of the damper body 100, and the opening/closing detection unit 600 is installed on the other side of the damper body 100.

In addition, the sealing air supply unit 400 is for supplying sealing air to the space between the pair of blades 300 that are spaced apart from each other, and includes a sealing air supply pipe provided through the damper body 100. It is composed of an air supply pipe, a sealing air fan which is a blowing means for generating and supplying sealing air to the sealing air supply pipe, and a sealing air heating means for heating the sealing air supplied from the sealing air fan to the sealing air supply pipe. can

Next, Figure 3 is a front view and a partially enlarged view of the sealing unit of the air sealing damper capable of detecting and preventing air leakage according to the present invention, Figure 4 is an enlarged view of A (sealing unit) in Figure 2 .

Referring to FIG. 3, the sealing unit 500 is formed on the blade 300, and as the rotating shaft 200 rotates, the pair of blades 300 are simultaneously rotated to The flow path can be opened or closed.

That is, the sealing unit 500 is formed at the end of the blade 300 to open and close the internal passage of the damper body 100, and rotates in the passage as the rotating shaft 200 rotates to open and close the passage and includes a sealing member cover 510, a sealing member 520, and a fastening means 530.

The sealing unit 500 is disposed along the outer circumference of the blade 300 so that one side is adjacent to it, and is in contact with a pair of landing bars 110 protruding from the inner surface of the damper body 100 corresponding to the blade 300 to Prevents leakage of sealing air.

Here, as a method of attaching the sealing unit 500 to the blade 300, there are methods such as welding, fitting, and bolt fastening. It is provided so that it can be fastened to the outer circumferential surface.

At this time, the bolt fastening method can easily replace only the sealing unit 500 to be replaced individually at the point in time when replacement is necessary as the sealing unit is used for a long time, and can reduce replacement time as well as economical cost reduction. Depending on the maintenance can provide significant benefits.

Referring to FIG. 3, the sealing member cover 510 has a polygonal plate shape, one side is formed with a fastening hole 514 fastened to the blade 300, and the other side is bent downward to form a 'c' shape. The sealing member insertion groove 512 is formed.

According to a preferred embodiment, the sealing member cover 510 has a trapezoidal plate shape, a fastening hole 514 fastened to the blade 300 is formed on the side of the shorter length, and a lower side on the side of the longer length. It is bent to form a 'c' shaped sealing member insertion groove 512.

At this time, as the sealing member cover 510 is formed in a trapezoidal plate shape, one side is arranged adjacently to correspond to the shape of the circular blade 300, and is fastened with the blade 300 on the side of the short length. When the fastening hole 514 is formed, the outer circumferential surface can be easily covered with a large area.

In addition, the sealing member cover 510 is provided adjacent to each other and may be provided so that adjacent ends overlap each other. At this time, the sealing member cover 510 is a plurality of sealing member covers 510 and the adjacent sealing member cover 510 ) When there is an overlapping portion (not shown) between the overlapping portion, the overlapping portion is pressed so as to be configured to more effectively prevent the occurrence of a gap in the corresponding portion.

Next, the sealing member insertion groove 512 is formed by bending the other side of the sealing member cover 510 downward to insert the sealing member 520 into a 'c' shape.

At this time, the sealing member insertion groove 512 is formed by bending the sealing member cover 510, can improve airtightness by inserting the sealing member, and additional components including fastening means for inserting the sealing member 520. There is an advantage that there is no need to additionally provide.

Next, the fastening hole 514 is a hole formed on one side of the sealing member cover 510 to fasten the sealing unit 500 to the blade 300 in a bolt fastening manner, and is a through hole formed along the circumference of the blade 300. It is formed to correspond to the shape and size of.

In addition, the fastening hole 514 is formed on one side of the sealing member cover 510, and preferably formed in two or more to stably couple the sealing member cover 510 to the blade 300, but is not limited thereto. It can be variously changed and implemented, and a plurality may be formed corresponding to the shape and size of the sealing member cover 510 .

Next, the sealing member 520 is inserted into the sealing member insertion groove 512 formed by bending the other side of the sealing member cover 510 downward in a 'c' shape to closely support the landing bar 110 to maintain the airtightness of the damper improve

On the other hand, when the sealing member 520 is used in a damper, it is necessary to consider the expansion of the blade at high temperature, and since the blade and the landing bar are manufactured by welding, the precision between the blade and the landing bar is reduced. A leaf seal made of Hastelloy, which can maintain elasticity, was used. However, in the case of ships, generator engines are used alternately rather than continuously, so that water vapor in the atmosphere and exhaust gas combine at low temperatures to produce sulfuric acid, which is highly corrosive. There is a problem of causing deformation and damage to the leaf seal as it accumulates on the landing bar 110 like the carbon oxide that is adhered thereto.

Accordingly, it is appropriate for the sealing member 520 used in the sealing unit 500 to be made of a material that can be used at high temperatures so as to replace the leaf seal, and the sealing unit 500 contacts the blade 300. In the case of doing so, it is preferable that the material has elasticity so as to closely support the landing bar 110 to increase airtightness.

In addition, the sealing member 520 may be inserted into the sealing member insertion groove 512 and fixed in various ways, and it is appropriate to fix the sealing member 520 by welding, but it is not limited thereto and can be variously implemented. there is.

According to a preferred embodiment, the sealing member 520 is a ceramic rope capable of maintaining elasticity at a high temperature to minimize the effect of thermal deformation and thermal expansion due to high-temperature exhaust gas when in contact with the landing bar 110. It is appropriate to form

As shown in FIG. 3, the sealing member 520 is inserted into the sealing member insertion groove 512 formed in the sealing member cover 510 to come into contact with the landing bar 110, and FIG. 3 shows the sealing member 520 Looking at the specific structure of the sealing unit 500 with reference to FIG. 4 as an highlighted drawing, the sealing member insertion groove 512 is bent downward on the other side of the sealing member cover 510 in a 'c' shape. After being formed, the sealing member 520 is inserted, and the sealing member 520 makes surface contact with the landing bar 110 to closely support it, thereby improving airtightness.

In addition, the sealing member 520 is made of a single body as shown in FIG. 3 or, although not shown in the drawing, a plurality of sealing members 520 having a predetermined size are inserted into each sealing unit 500. It can be arranged and provided continuously.

That is, the sealing unit 500 is in surface contact with the landing bar 110, and sealing performance can be further improved due to surface contact rather than line contact.

Next, the fastening means 530 passes through the fastening hole 514 and fastens the blade 300 and the sealing member cover 510 .

According to a preferred embodiment, as the sealing unit 500 of the present invention is fastened by a bolt fastening method, the fastening means 530 is provided as a bolt and penetrates the fastening hole to secure the blade 300 and the sealing member cover 510. It is appropriate to conclude

At this time, the sealing member cover 510 may be fastened to the blade 300 by a fastening means 530 such as a screw and fixedly mounted to the blade 300, and the sealing member cover 510 may be a sealing member cover 510 , the fastening hole 514, and the blade 300 may be configured to penetrate and couple.

In the case of this configuration, it is possible to prevent a gap between the blades 300 by the sealing member cover 510, and sealing air leaks between the coupling part between the sealing member 520 and the blade 300. can be prevented more effectively.

In addition, the sealing unit 500 is made of the same material as the blade 300, and thus has excellent heat resistance and restoring elasticity, and may be provided to realize sufficient strength.

According to the embodiment, the sealing unit 500 should be provided to minimize the influence of high-temperature exhaust gas, and at the same time, it is preferable to be provided with a stainless steel material having excellent restoring elasticity and implementing sufficient strength.

Next, FIGS. 5(a) to (b) are enlarged views of B (open/close detection unit) in FIG. 2, FIG. 5(a) shows the open/close detection unit with the blade closed, The opening/closing detection unit in an open state of the blade is shown.

On the other hand, there are cases where the damper is not completely closed due to foreign substances, and the actuator is installed on the upper part of the damper so that the position of the damper can be recognized. Depending on the size, there is not even a 1° difference, so it is difficult to recognize it, so a technology that can prevent safety accidents by detecting the fine opening and closing of the damper is needed.

The opening/closing detection unit 600 according to the present invention is largely composed of a rotor 610, an indicator shaft 620, and an indicator 650, and the rotor 610 formed between a pair of landing bars 110 rotates At the same time as contacting the blade 300, the indicator shaft 620, one side of which is interlocked with the rotor 610, indicates the degree of opening and closing with the indicator 650.

Specifically, the opening/closing detection unit 600 may detect minute opening/closing of the blade 300, and specifically, the rotor 610, the indicator shaft 620, the indicator body 630, the elastic member 640, indicator 650.

More specifically, the opening and closing detection unit 600 is formed so that the rotor 610 is interlocked with one side of the blade 300 to detect the opening and closing of the blade 300, as shown in FIG. 2, the rotor 610 ) The indicator shaft 620 is installed to penetrate one side of the damper body 100 between the pair of blades 300 so as to interlock with the other side of the damper body, and the degree of opening and closing of the blade 300 with the indicator 650 indicates

That is, in the opening/closing detection unit 600, one side of the rotor 610 is supported by the blade 300 and the other side of the rotor 610 presses the indicator shaft 620 to protrude, so that the indicator 650 is attached to the blade 300. It can indicate the degree of fine opening and closing.

First, the rotor 610 is formed on one side inside the damper body 100 so that one side interlocks with the indicator shaft 620 and the other side interlocks with the blade 300.

At this time, the rotor 610 is formed to be rotatable, one side is formed to interlock with the indicator shaft 620, and the other side is formed to contact or separate from the blade 300.

Specifically, in the rotor 610, the 'L'-shaped first sensing bar 612 and the 'ㅡ'-shaped second sensing bar 614 have an angle of 90° to 120° with respect to the central axis. , the first detection bar 612 contacts the sealing unit 500 formed on the blade 300 and at the same time the second detection bar 614 interlocks with the indicator shaft 620 so that the indicator 650 is connected to the blade Indicates the degree of opening and closing of (300).

That is, the rotor 610 is formed such that the 'L'-shaped first sensing bar 612 and the 'ㅡ'-shaped second sensing bar 614 have an angle of 90° to 120° and are rotatable. At the same time that the first sensing bar 612 comes into contact with the blade 300, the second sensing bar 614 presses the indicator shaft 620 to indicate the opening/closing degree of the blade with the indicator 650.

According to a preferred embodiment, the rotor 610 is formed so that the first detection bar 612 and the second detection bar 614 have an angle of 110 ° so that the first detection bar 612 is formed on the blade 300. It is appropriate to sense the opening and closing of the blade 300 by contacting the unit 500 and at the same time interlock with the indicator shaft 620 to indicate the degree of opening and closing of the blade 300 on the indicator 650.

Next, an indicator shaft 620 is formed to pass through one side of the damper body 100 and includes an elastic member 640 to move forward and backward into the damper body 100 by an elastic force.

5, the indicator shaft 620 is formed through one side of the damper body 100, interlocks with the rotor 610 to advance and retreat inside the damper body, and the degree of opening and closing of the blade 300 by the indicator 650 indicates

In addition, the indicator shaft 620 is formed to be wrapped with an elastic member 640, and as the elastic member 640 is provided, the other side of the rotor 610 is pressed and rotated so that one side of the rotor 610 moves toward the blade 300. It is possible to easily sense the fine degree of opening of the blade by bringing it into contact with.

Specifically, according to a preferred embodiment, when the blade 300 is completely closed, referring to FIG. 5 (a), the rotor 610 presses the indicator shaft 620, and when the blade 300 is open, FIG. 5 (b), the pressurized indicator shaft 620 returns to the inside of the damper body 100 by the elastic force and presses the other side of the rotor 610, and at the same time one side of the rotor 610 contacts the blade, The fine degree of opening of the blade 300 is detected.

At this time, the elastic member 640 provides elastic force to advance and retreat the indicator shaft 620. It is appropriate to be provided as a spring, but it is not limited thereto, and is variously changed as a means for providing elastic force to the indicator shaft 620. It is feasible

Next, an indicator body 630 according to the present invention includes an indicator shaft 620, an elastic member 640, and an indicator 650, and the elastic member 640 surrounds the indicator shaft 620. formed, and an indicator 650 indicating the opening/closing degree of the blade detected by the indicator shaft 620 is provided on one side.

In addition, the indicator body 630 includes sealing means including a packing 632 therein to prevent leakage of exhaust gas.

At this time, the packing 632 is formed inside the indicator body 630 so that the indicator shaft 620 operates precisely, and is specifically formed to surround the indicator shaft 620 and seal the space so that the indicator shaft 620 By operating precisely, the degree of opening and closing of the blade 300 can be more accurately sensed and displayed.

In addition, the indicator body 630 is provided with an indicator 650 on one side to clearly indicate the degree of opening and closing of the fine blade 300.

An indicator 650 is provided on one side of the indicator body 630 and indicates the degree of opening and closing of the blade 300 according to the degree of external protrusion of the damper body 100 of the indicator shaft 620.

Specifically, the indicator 650 determines that the blade 300 is open when the standard is not reached based on the length of the indicator shaft 620 protruding outside the damper body 100, and the rotor 610 determines that the blade ( 300) and pressing the indicator shaft 620 at the same time to protrude it out of the damper body 100, the degree of fine opening and closing of the blade 300 can be indicated according to the length of the external protrusion of the indicator shaft 620. .

That is, according to a preferred embodiment, when the blade 300 is closed, in the open/close detection unit 600, the first detection unit 612, which is one side of the rotor 610, is supported and rotated by the blade, so that the other side of the rotor 610 The second sensing unit 614 presses the indicator shaft 620 so that the indicator shaft 620 is exposed to the outside of the damper body 100 and reaches the point indicated on the indicator 650, indicating that the indicator 650 is closed. In the case where the blade 300 is open, the pressurized indicator shaft 620 presses and rotates the other side of the rotor 610 so that one side of the rotor 610 comes into contact with the blade 300 in a slightly open state of the blade. can detect

Meanwhile, referring to FIG. 5 , in the open/close detection unit 600, one side of the rotor 610 contacts the sealing unit 500 fastened to the blade 300, and accordingly, the replacement and maintenance time of the sealing unit 500 There is also an effect that can tell you.

In addition, in the opening/closing detection unit 600 according to the present invention, the first detection unit 612, which is one side of the rotor 610 installed inside the damper 100, is supported by the blade 300 and rotates to detect the second detection unit on the other side The part 614 presses the indicator shaft 620 and protrudes outward to reach the point indicated on the indicator 650 to indicate the closed state of the blade. ) presses and rotates the second sensing unit 614, which is the other side of the rotor 610, and the first sensing unit 612, which is one side of the rotor 610, contacts the blade, and at this time, the outside of the damper body 100 As the degree of opening and closing of the blade is indicated by the indicator 650 with the length of the indicator shaft 620 protruding to , it is possible to detect fine opening and closing of the blade opened and closed by about 1°.

Although the embodiments of the present invention have been described with reference to the above and accompanying drawings, those skilled in the art to which the present invention pertains can implement the present invention in other specific forms without changing the technical spirit or essential features. You will understand that there is Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

100: damper body
110: landing bar
200: axis of rotation
300: blade
400: sealing air supply unit
500: sealing unit
510: sealing member cover
512: sealing member insertion groove
514: fastener
520: sealing member
530: fastening means
600: open/close detection unit
610: rotor
612: first detection bar
614: second detection bar
620: indicator shaft
630: indicator body
632: packing
640: elastic member
650: indicator

Claims (6)

A damper body 100 having an inlet formed on the front portion and an outlet formed on the rear portion to form a flow path through which fluid is transported from the inlet side to the outlet side;
a rotational shaft 200 rotatably coupled through the damper body 100 vertically and vertically;
A pair of blades 300 that are spaced apart from each other on both sides around the rotation shaft and rotate simultaneously in conjunction with the rotation of the rotation shaft 200;
a sealing air supply unit 400 installed on one side of the damper body 100 to supply sealing air to the space between the pair of blades 300;
A sealing unit disposed so that one side thereof is adjacent to the outer circumference of the blade to prevent leakage of sealing air by contacting a pair of landing bars 110 protruding from the inner surface of the damper body 100 corresponding to the blade ( 500); and
An air sealing damper capable of detecting and preventing leakage of sealing air including; an opening/closing detection unit 600 installed on the other side of the damper body 100 to detect an opening/closing degree of the blade 300. According to claim 1,
The sealing unit 500 is
It has a polygonal plate shape, one side is formed with a fastening hole 514 fastened to the blade 300, and the other side is bent downward to form a 'c' shaped sealing member insertion groove 512. member cover 510;
a sealing member 520 inserted into the sealing member insertion groove 512; and
A fastening means 530 for fastening the blade 300 and the sealing member cover 510 through the fastening hole 514; Air capable of detecting and preventing leakage of sealing air, characterized in that it includes sealing damper. According to claim 2,
The sealing member 520 is a ceramic rope capable of maintaining elasticity at a high temperature to minimize the effect of thermal deformation and thermal expansion due to high-temperature exhaust gas when in contact with the blade 300. Sealing, characterized in that Air sealing damper that can detect and prevent air leakage. According to claim 1,
The opening and closing detection unit 600
an indicator shaft (620) formed through one side of the damper body (100) and having an elastic member (640) advancing and retracting into the damper body by an elastic force; and
a rotor 610 formed inside the damper body 100 so that one side interlocks with the indicator shaft 620 and the other side interlocks with the blade 300;
An indicator body (630) having an indicator (650) indicating the degree of opening and closing of the blade (300) according to the degree of entry of the indicator shaft (620); An air sealing damper that can detect and prevent According to claim 4,
The opening and closing detection unit 600
One side of the rotor 610 is supported by the blade 300, and the other side of the rotor 610 presses the indicator shaft 620 to protrude, so that the indicator 650 indicates the degree of fine opening and closing of the blade 300. An air sealing damper capable of detecting and preventing leakage of sealing air, characterized in that it can represent. According to claim 4,
The rotor 610 is formed so that the 'L'-shaped first sensing bar 612 and the 'ㅡ'-shaped second sensing bar 614 have an angle of 90° to 120° with respect to the central axis. Became,
At the same time that the first detection bar 612 contacts the blade 300, the second detection bar 614 presses the indicator shaft 620 to determine the opening/closing degree of the blade 300 as an indicator 650. An air sealing damper capable of detecting and preventing leakage of sealing air, characterized in that indicated.