KR20170099203A - Cleaning apparatus for hrsg - Google Patents

Cleaning apparatus for hrsg Download PDF

Info

Publication number
KR20170099203A
KR20170099203A KR1020160021294A KR20160021294A KR20170099203A KR 20170099203 A KR20170099203 A KR 20170099203A KR 1020160021294 A KR1020160021294 A KR 1020160021294A KR 20160021294 A KR20160021294 A KR 20160021294A KR 20170099203 A KR20170099203 A KR 20170099203A
Authority
KR
South Korea
Prior art keywords
tube
conduit
header
air
sponge
Prior art date
Application number
KR1020160021294A
Other languages
Korean (ko)
Other versions
KR101853536B1 (en
Inventor
이진태
김수복
이민수
Original Assignee
제네럴 일렉트릭 테크놀러지 게엠베하
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 제네럴 일렉트릭 테크놀러지 게엠베하 filed Critical 제네럴 일렉트릭 테크놀러지 게엠베하
Priority to KR1020160021294A priority Critical patent/KR101853536B1/en
Publication of KR20170099203A publication Critical patent/KR20170099203A/en
Application granted granted Critical
Publication of KR101853536B1 publication Critical patent/KR101853536B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/16—Rotary appliances using jets of fluid for removing debris
    • F28G3/163—Rotary appliances using jets of fluid for removing debris from internal surfaces of heat exchange conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0024—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for combustion apparatus, e.g. for boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/28—Safety or protection arrangements; Arrangements for preventing malfunction for preventing noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cleaning In General (AREA)

Abstract

The present invention relates to a cleaning device for a heat recovery steam generator. The cleaning device for a heat recovery steam generator includes: a conduit inserted into a header of a heat recovery steam generator having a the header and a tube connected to a tube hole of the header, wherein the conduit is connected to the tube hole of the header; and an air supply device supplying air to the conduit. The conduit includes: a first tube unit extended in a direction, wherein one end of the first tube unit is connected to the air supply device; a second tube unit bent from the other end of the first tube unit to the outside of the first tube unit; and a boss unit connecting the second tube unit and the tube hole. Therefore, the cleaning device for a heat recovery steam generator can improve productivity of the heat recovery steam generator by reducing time consumed to remove residual water in the heat recovery steam generator. Also, the cleaning device for a heat recovery steam generator can easily remove foreign substances such as rust in the heat recovery steam generator.

Description

BACKGROUND ART [0002] CLEANING APPARATUS FOR HRSG [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an HRSG (Heat Recovery Steam Generator) cleaning apparatus, and more particularly, to an arrangement recovery boiler cleaning apparatus capable of removing foreign materials scattered inside a tube of an arrangement recovery boiler will be.

Generally, the exhaust gas produced after power generation in a gas turbine of a generator has a high temperature of about 530 degrees and thus a lot of energy. When such high-temperature energy is released to the atmosphere, a significant energy loss is caused. Therefore, an arrangement recovery boiler is used to recover energy from the exhaust gas.

The batch recovery boiler generates steam using the exhaust gas of the gas turbine, and the steam generated in the batch recovery boiler is used to drive the steam turbine to produce electric power.

Such an arrangement recovery boiler has a plurality of heat exchangers (Harp) for obtaining steam by heat exchange with exhaust gas of a gas turbine, as disclosed in Korean Patent Laid-Open Publication No. 2001-0037297.

1 is a front view showing a heat exchanger of a conventional batch recovery boiler.

1, the heat exchanger includes a pair of headers 112 formed in a hollow shape, and a plurality of tubes 114 connecting the pair of headers 112 and having a pin wound around the outer periphery thereof do.

The heat exchanger having such a configuration is distributed to the plurality of tubes 114 after the water flows into the inner space of any one of the pair of the headers 112. The water distributed to the plurality of tubes 114 is heat-exchanged with the hot exhaust gas passing through the outside of the plurality of tubes 114 to become steam. The generated steam passing through the plurality of tubes 114 is collected in the other of the pair of the headers 112 and then discharged to the outside to be used for power generation and the like.

On the other hand, as disclosed in Korean Patent Laid-Open Publication No. 2001-0037297, the heat exchanger is subjected to a water pressure test to determine whether the heat exchanger is properly manufactured during the manufacturing process of the heat exchanger.

After the water pressure test is completed, a cleaning process for removing foreign substances (for example, remaining water) existing in the heat exchanger by the batch recovery boiler cleaning device is performed.

FIG. 2 is a perspective view showing a state where foreign substances scattered in the heat exchanger of the arrangement recovery boiler of FIG. 1 are removed by a conventional arrangement recovery boiler cleaning apparatus.

Referring to FIG. 2, a conventional batch recovery boiler cleaning apparatus includes an air supply device 220 for supplying air to the header 112.

In this arrangement, air discharged from the air supply device 220 is injected into any one of the pair of the headers 112. Air injected into any one of the pair of the headers 112 is distributed and introduced into the plurality of tubes 114. Air that has passed through the plurality of tubes 114 flows through the pair of the headers 112 ) And is discharged to the outside. Wherein air passes through one of the pair of headers 112, the other of the tubes 114 and the header 112, and the air in the interior of the batch recovery boiler (or more precisely, the heat exchanger) (For example, remaining water) dispersed in the water.

However, such a conventional batch recovery boiler cleaning apparatus has a problem that it takes a considerable time to remove (dry) the remaining water remaining in the batch recovery boiler after the hydrostatic test, thereby lowering the productivity of the batch recovery boiler. More specifically, the plurality of tubes 114 differ from each other in the remaining water removal time, and at a point in time after a cleaning process has been performed, some of the tubes 114 have been removed, ), The remaining number may not be removed yet. In this case, a cleaning process is further performed to remove the remaining number of remaining tubes 114. That is, air is continuously injected into any one of the pair of the headers 112, and the air injected into any one of the pair of the headers 112 includes not only the tube 114 in which the remaining water still exists, And is also injected into the tube 114. That is, air is unnecessarily injected into the tube 114 where no remaining water exists. As a result, the time required to remove residual water as a whole in the batch recovery boiler is increased, and the time required for producing the batch recovery boiler is increased, resulting in a decrease in productivity.

Also, as the air is injected into the header 112 and then distributed to the tubes 114, the pressure of air injected into each tube 114 is lower than the pressure of the air injected into the header 112. That is, the air pressure applied to each tube 114 is significantly reduced. Accordingly, foreign matter such as rust and tangles existing in the exhaust heat recovery boiler (more precisely, the tube 114) can not be removed, and the heat exchange performance of the exhaust heat recovery boiler is deteriorated due to foreign substances such as rust, there was.

Korean Patent Publication No. 2001-0037297

Accordingly, it is an object of the present invention to provide an arrangement recovery boiler cleaning device capable of shortening the time required to remove the remaining water in the batch recovery boiler, thereby improving the productivity of the batch recovery boiler.

It is another object of the present invention to provide an arrangement recovery boiler cleaning device capable of removing foreign substances such as rust and seizure inside the batch recovery boiler to improve the heat exchange performance of the batch recovery boiler.

The present invention provides a duct inserted into the header of an arrangement recovery boiler having a header and a tube communicating with the tube hole of the header, the duct being connected to the tube hole of the header, for achieving the above object; And an air supply device for supplying air to the conduit, wherein the conduit extends in one direction and has one end communicating with the air supply device; A second tube portion bent radially outwardly of the first tube portion from the other end of the first tube portion; And a boss portion communicating the second tube portion and the tube hole.

The present invention also relates to an apparatus and a method for operating a boiler of a batch recovery boiler which is movably inserted into the header of an arrangement recovery boiler having a header extending in one direction and having a plurality of tube holes formed along the extending direction thereof and a plurality of tubes each communicating with the plurality of tube holes A conduit communicating with any one of the plurality of tube holes; And an air supply device for supplying air to the conduit, wherein the conduit extends in one direction and has one end communicating with the air supply device; A second tube portion bent radially outwardly of the first tube portion from the other end of the first tube portion; And a boss portion communicating the second tube portion with any of the plurality of tube holes.

Wherein the first tube portion includes an air inlet for guiding air supplied from the air supply device to an inner space of the first tube portion; And a sponge input port for guiding a sponge supplied from the outside of the first pipe portion to the inner space of the first pipe portion, and the sponge input port may be located on a downstream side of the air inlet port.

A sponge inlet opening / closing cover rotatably installed in the first tube portion may be formed in the first tube portion, and a through hole may be formed in the sponge inlet opening / closing cover to open / close the sponge inlet according to rotation of the sponge inlet opening / closing cover .

The sponge is injected into the sponge injection port and injected into the tube hole through the first tube portion, the second tube portion, and the boss portion together with air introduced through the air injection port.

The external diameter of the sponge may be larger than the internal diameter of the tube when no external force is applied to the sponge.

The sponge may be formed in a rectangular shape.

The apparatus may further include a tightening mechanism which is supported by the conduit on one side and supported on the inner wall surface of the header, and presses the conduit toward the tube hole.

Wherein the tightening mechanism comprises: a cylinder fixed to the conduit; And a piston reciprocally moved by the cylinder to contact and separate from the inner wall surface of the header, wherein the piston is moved to the opposite side of the boss portion with respect to the conduit and is contactable with the inner wall surface of the header .

The piston may be disposed at the same position as the boss portion in the extending direction of the first conduit.

Wherein the tightening mechanism comprises: a first air hose supplying air to the cylinder for reciprocating the piston; A second air hose that recovers air from the cylinder to reciprocate the piston; And a valve for selectively opening and closing the first air hose and the second air hose, respectively.

The valve selectively communicates and shields the first air hose with the inner space of the conduit and selectively communicates and shields the second air hose with the inner space of the conduit.

The valve may include a silencer for reducing noise generated when the first air hose and the second air hose are opened and closed.

The apparatus may further include a sealing member interposed between the boss and the inner wall surface of the header.

Wherein the boss portion includes: a flange portion formed in an annular shape; A first insertion portion protruded from an inner peripheral portion of the flange portion and inserted into the second tube portion; And a second inserting portion protruding from the inner peripheral portion of the flange portion to the opposite side of the first inserting portion and inserted into the tube hole, wherein the sealing member is inserted into at least one of the flange portion and the second inserting portion Can be supported.

The sealing member may be formed of an elastic material.

The apparatus further includes a guiding mechanism for guiding the conduit so that one side of the conduit is supported by the conduit and the other side is supported by the inner wall surface of the header and the conduit is moved along the inner space of the header can do.

The guide mechanism includes: a hub provided on an outer circumferential surface of the conduit; A support movably coupled to the hub, the support being in contact with and spaced from the inner wall of the header; And a bearing provided at an end of the support and movably supporting the support to the inner wall surface of the header.

The hub includes an annular portion formed in an annular shape and into which the conduit is inserted; And a protrusion protruding radially outward from the annular portion of the annular portion, wherein the protruding portion is formed with a slot into which the support is inserted.

The annular portion may be rotatably coupled to the conduit.

The protrusions may be formed in a plurality of numbers, and may be arranged at regular intervals along the circumferential direction of the annular portion, and the supports and the bearings may be formed in a number corresponding to the number of the protrusions, respectively.

The support base includes a bearing insertion groove extending in one direction, one end inserted into the slot, and the other end inserted into the bearing insertion groove, the bearing being formed of a ball bearing.

The first tube portion may be formed of a single tube or may be formed by connecting a plurality of segmented tubes.

The apparatus for recovering the boiler according to the present invention is formed so as to directly communicate with the tube hole of the header, thereby shortening the time required to remove the remaining water in the boiler, thereby improving the productivity of the batch recovery boiler. That is, only the tube in which the remaining water is present is intensively cleaned without unnecessarily cleaning the tube from which the remaining water has been removed, and the time required to remove the remaining water as a whole in the arrangement recovery boiler is reduced, And the productivity can be improved. Further, since the sponge is formed so as to be injected into the tube together with the air, the sponge absorbs the remaining water in the tube, thereby further reducing the time required to remove the remaining water. As a result, So that the productivity can be further improved.

Further, it is possible to prevent the air pressure applied to the tube from being lowered as the air discharged through the conduit of the batch recovery boiler cleaning device is directly injected into the tube. As a result, foreign substances such as rust and toughness present inside the tube can be easily removed. In addition, since the sponge is formed so as to be injected into the tube together with the air, the sponge wipes out foreign substances such as rust and chewiness inside the tube, so that foreign substances such as rust and toughness present in the tube can be more easily removed . Further, the heat exchange performance of the batch recovery boiler can be improved by removing foreign substances such as rust and seaweed.

1 is a front view of a heat exchanger of a typical batch recovery boiler,
FIG. 2 is a perspective view showing a state where foreign substances scattered in the heat exchanger of the arrangement recovery boiler of FIG. 1 are removed by a conventional arrangement recovery boiler cleaning apparatus;
FIG. 3 is a front view showing an arrangement recovery boiler cleaning apparatus according to an embodiment of the present invention;
Fig. 4 is an enlarged view of Fig. 3,
Fig. 5 is an enlarged view of Fig. 3B,
Fig. 6 is a left side view of Fig. 3; Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an exhaust heat recovery boiler cleaning apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

3 is an enlarged view of FIG. 3, FIG. 5 is an enlarged view of FIG. 3, and FIG. 6 is an enlarged view of the arrangement recovery boiler cleaning apparatus according to an embodiment of the present invention. It is the left side view.

3 to 6, the arrangement and recovery boiler cleaning apparatus according to the embodiment of the present invention is inserted into the header 112 of the arrangement recovery boiler and communicates with the tube hole 112a of the header 112 An air supply device 220 for supplying air to the conduit 210, a contact mechanism 230 for pressing the conduit 210 toward the tube hole 112a, A sealing member 240 sealing between the tube holes 112a and a guide mechanism 250 for guiding the conduit 210 to move the conduit 210 along the inner space of the header 112 .

Here, the arrangement recovery boiler includes a heat exchanger (Harp) that generates steam as heat of the exhaust gas, which generates steam used for power generation and the like by using exhaust gas of a gas turbine, and the heat exchanger is a one- And a plurality of tubes 114 communicating with the plurality of tube holes 112a and having fins on the outer circumferential surface thereof, .

The conduit 210 includes a first tube portion 212 extending in one direction and one end communicating with the air supply device 220, a first tube portion 212 extending from the other end of the first tube portion 212, And a boss portion 216 for communicating the second tube portion 214 with any of the plurality of tube holes 112a of the plurality of tube holes 112a. have.

The first tube portion 212 may have one end communicating with the air supply device 220 and the other end communicating with the second tube portion 214.

An air inlet 212a for guiding the air supplied from the air supply device 220 to the inner space of the first tube portion 212 and an air inlet 212b for guiding air supplied from the air supply device 220 to the first tube portion 212, A sponge inlet 212b for guiding a sponge (not shown) supplied from the outside to the inner space of the first tube portion 212 may be formed.

The sponge insertion port 212b is formed on the downstream side of the air inlet 212a on the flow of air flowing in the internal space of the first tube portion 212 from the outer circumferential surface of the first tube portion 212 to the first tube portion 212 to the inner circumferential surface of the first tube portion 212.

The sponge input port 212b may be opened or closed by a sponge input port opening / closing cover 260 that is rotatably installed in the first pipe portion 212.

The sponge input opening / closing cover 260 is formed to extend annularly along the circumferential direction of the first tube portion 212 and relatively rotatably coupled to the first tube portion 212. The sponge insertion opening 212b Through holes 262 can be formed.

The sponge input port opening / closing cover 260 having such a configuration is rotated in one direction to communicate the through hole 262 and the sponge input port 212b so that the sponge (not shown) And can be introduced into the first tube portion 212 through the inlet 212b. The sponge inlet opening / closing cover 260 is rotated in the opposite direction so that the sponge inlet opening 212b is covered by the sponge inlet opening / closing cover 260, so that the internal air of the first tube portion 212 flows into the sponge- It is possible to prevent unnecessary leakage through the inlet 212b and the through hole 262. [

In the header 112, a portion into which the batch recovery boiler cleaning device is inserted is referred to as a proximal portion, and a portion opposite to the proximal portion thereof is referred to as a distal portion. The first pipe portion 212 includes a boss portion 216 May be provided to be movable with respect to the header 112 so as to reach a tube hole 112a located at a distal portion of the header 112. [

The first tube portion 212 is formed of a single tube so as to prevent leakage of air. The first tube portion 212 has a length that allows the boss portion 216 to reach the tube hole 112a located at the distal portion of the header 112 .

The first tube portion 212 is connected to a plurality of partitioned tubes so that the batch recovery boiler cleaning device can be commonly used for the headers 112 having different lengths, And may be formed to have a length capable of reaching the tube hole 112a located at the distal portion of the header 112. At this time, the plurality of pipes may be connected or separated by a fastening member 218 such as a cam lock coupler.

The second tube portion 214 is connected to the first tube portion 212 in such a manner that one end communicates with the first tube portion 212 and the other end is radially outward (the inner wall surface of the header 112) And can be curved based on the determined radius of curvature.

The boss portion 216 includes a flange portion 216a formed in an annular shape, a first insertion portion 216b protruded from an inner peripheral portion of the flange portion 216a and inserted into the second tube portion 214, And a second insertion portion 216c protruding from the inner peripheral portion of the support portion 216a to the opposite side of the first insertion portion 216b and inserted into the tube hole 112a.

The first insertion portion 216b is inserted into the boss portion 216 through the sponge insertion port 212b, the first tube portion 212 and the second tube portion 214. When the sponge (not shown) The inner diameter of the first insertion portion 216b is set to be equal to the inner diameter of the second tube portion 214 and the inner diameter of the flange portion 216a so as not to be caught by the first insertion portion 216b and the flange portion 216a . That is, the inner diameter of the first insertion portion 216b is formed at the same level as the inner diameter of the second tube portion 214 at the inlet of the first insertion portion 216b, and the inner diameter of the first insertion portion 216b It gradually decreases toward the discharge port side and can be formed at the same level as the inner diameter of the flange portion 216a at the discharge port of the first insertion portion 216b.

The second insertion portion 216c is formed so that the inner diameter of the second insertion portion 216c is smaller than the inner diameter of the second insertion portion 216c so that the sponge (not shown) passing through the flange portion 216a is not caught by the second insertion portion 216c. It can be formed so as not to be stepped with the inner diameter of the support portion 216a. That is, the inner diameter of the second insertion portion 216c may be formed at the same level as the inner diameter of the flange portion 216a. The second insertion portion 216c is inserted into the second insertion portion 216c such that the sponge (not shown) is quickly attached to the inner wall surface of the tube hole 112a after passing through the second insertion portion 216c The inner diameter of the second insertion portion 216c may be gradually increased toward the discharge port of the second insertion portion 216c.

The air supply device 220 includes an air compressor (not shown) for compressing and discharging air, an air supply pipe (not shown) for guiding the air discharged from the air compressor to the first conduit 210, And a first valve 226 for selectively opening and closing the first valve 226 (not shown).

One side of the tightening mechanism 230 is supported on the conduit 210 and the other side is supported on the inner wall surface of the header 112. The conduit 210 is spaced apart from the tube hole (112a).

More specifically, the tight fitting mechanism 230 includes a cylinder 231 fixed to the conduit 210, a piston 231 reciprocating by the cylinder 231 to contact and spaced from the inner wall surface of the header 112 A first air hose 233 for supplying air to the cylinder 231 to reciprocate the piston 232 and a second air hose 233 for returning air from the cylinder 231 to reciprocate the piston 232. [ And a second valve 235 for selectively opening and closing the first air hose 233 and the second air hose 234, respectively.

The cylinder 231 includes a cylinder fixing block 231a fixed to the first tube portion 212 or the second tube portion 214 and a cylinder casing 231b fastened to the cylinder fixing block 231a .

The cylinder casing 231b includes an inner space communicating with the first air hose 233 and the second air hose 234, and the inner space includes the piston 232 can be inserted.

One end of the piston 232 passes through the cylinder casing 231b and is received in the internal space and the other end of the piston 232 protrudes to the outside of the cylinder casing 231b, And may be formed to be able to contact the inner wall surface of the header 112.

The other end of the piston 232 may be provided with an elastic body to prevent the header 232 from being damaged by the piston 232.

The cylinder 231 and the piston 232 are connected to the boss 216 and the inner wall of the header 112 to maximize the contact force between the boss 216 and the inner wall of the header 112, And can be disposed at the same position as the portion 216.

The first air hose 233 and the second air hose 234 are closely contacted with the outer wall surface of the first conduit 210 to prevent the air hose 233 and the second air hose 234 from being damaged or detached from the cylinder 231, Can be fixed.

The second valve 235 includes a one-touch pitching 235a for selectively communicating and blocking the first air hose 233 and the second air hose 234 with the air line, And a muffler 235b for reducing the noise generated when the second air hose 234 is opened and closed.

The second valve 235 may be provided adjacent to the first valve 226 to increase the operational convenience. That is, the second valve 235 may be fixed to the other end of the first tube portion 212.

Here, the second valve 235 may be formed to selectively communicate and seal the first air hose 233 and the second air hose 234 with separate air compressors (not shown), respectively And the first air hose 233 and the second air hose 234 may be formed to selectively communicate with and seal the inner space of the conduit 210, respectively. In the latter case, the air line structure required for driving the close contact mechanism 230 is simplified by driving the close contact mechanism 230 with a part of the air injected into the conduit 210, The manufacturing cost required can be reduced.

The sealing member 240 is supported by at least one of the flange portion 216a and the second insertion portion 216c of the boss portion 216 and between the boss portion 216 and the inner wall surface of the header 112 As shown in FIG. The sealing member 240 is formed in an annular shape and the inner circumferential surface and the bottom surface of the sealing member 240 are supported by the second inserting portion 216c and the flange portion 216a, The upper surface of the sealing member 240 contacts the inner wall surface of the header 112 when the tightening mechanism 230 presses the boss 216 toward the tube hole 112a, .

The sealing member 240 may be formed of an elastic material and may be compressed and elastically deformed between the inner wall surface of the header 112 and the flange portion 216a. The sealing member 240 prevents air from leaking between the tube 114 hole and the boss portion 216 (more precisely, the second insertion portion 216c) It is possible to prevent the header 112 from being damaged by the boss 216 when the boss 216 is pressed toward the tube hole 112a.

One side of the guide mechanism 250 is supported by the conduit 210 and the other side thereof is supported by the inner wall surface of the header 112 so that the conduit 210 is separated from the inner wall surface of the header 112 May be formed to move along the inner space of the header 112 together with the conduit 210 in the state of FIG.

More specifically, the guide mechanism 250 includes a hub 252 provided on an outer circumferential surface of the conduit 210, a hub 252 movably coupled to the hub 252, And a bearing 256 provided at an end of the support 254 and movably supporting the support 254 on the inner wall surface of the header 112. [

The hub 252 is formed in an annular shape and includes an annular portion 252a into which the conduit 210 is inserted and a protruding portion 252b protruding radially outward from the annular portion 252a of the annular portion 252a .

The annular portion 252a is formed such that the conduit 210 is rotated according to the position of the tube hole 112a in the circumferential direction of the header 112 so that the boss portion 216 is opposed to the tube hole 112a So as to be rotatable with respect to the conduit 210.

The plurality of protrusions 252b may be formed at equal intervals along the circumferential direction of the annular portion 252a. In the case of this embodiment, the protrusions 252b are formed in three pieces and may be arranged at intervals of 120 degrees along the circumferential direction of the annular portion 252a.

The protrusions 252b may be formed with a slot 252c through which the supporter 254 is inserted.

The slot 252c may be engraved on the protrusion 252b along the radial direction of the annular portion 252a from the distal end surface of the protrusion 252b.

An elastic member (not shown) for pressing the support 254 to the outside of the slot 252c may be inserted into the slot 252c.

The support base 254 may extend in one direction and may have a bearing insertion groove 254b at one end thereof inserted into the slot 252c and at the other end thereof with the bearing 256 movably inserted therein .

The bearing 256 may be formed of a ball bearing 256 so that the guide mechanism 250 is smoothly moved and the header 112 is not damaged.

The support 254 and the bearing 256 may be formed in a number corresponding to the number of the projections 252b, respectively.

Hereinafter, the operation and effect of the batch recovery boiler cleaning apparatus according to the present embodiment will be described.

In the batch recovery boiler, a water pressure test is performed to determine whether the heat exchanger of the batch recovery boiler is properly manufactured during the manufacturing process. After completion of the hydraulic pressure test, the batch recovery boiler cleaning device according to the present embodiment is used to remove foreign substances present in the heat exchanger A cleaning process may be performed.

That is, the conduit 210 is inserted into the header 112 and is moved along the inner space of the header 112 according to the guidance of the guide mechanism 250, And may be arranged to face any of the tube holes 112a of the tube holes 112a.

The tight fitting mechanism 230 presses the conduit 210 toward the tube hole 112a in accordance with the operation of the second valve 235 so that the boss 216 is inserted into the tube hole 112a And can be inserted and brought into close contact with each other.

At this time, the conduit 210 is pressurized by the piston 232, and the support 254 located on the opposite side of the piston 232 with respect to the conduit 210 is inserted into the slot 252c So that it can be moved toward the tube hole 112a.

The sealing member 240 is pressed between the boss portion 216 and the inner wall surface of the header 112 to seal between the boss portion 216 and the tube hole 112a, Can be prevented from being damaged by the boss portion (216).

The first valve 226 is opened and compressed air supplied from the air supply device 220 passes through the first tube portion 212, the second tube portion 214 and the boss portion 216, And can be injected directly into the tube hole 112a.

The air injected into the tube hole 112a passes through the tube 114 communicated with the tube hole 112a and can remove foreign substances existing in the tube 114. [

When air is injected into the tube hole 112a, a sponge (not shown) passes through the through hole 262 of the sponge entry opening / closing cover 260 and the sponge inlet 212b, It can be put into the inside.

A sponge (not shown) inserted into the first tube portion 212 is inserted into the first tube portion 212, the second tube portion 214, and the boss portion 216 (not shown) together with air introduced into the air inlet 212a. To be injected into the tube hole 112a.

A sponge (not shown) injected into the tube hole 112a passes through the tube 114 communicated with the tube hole 112a and can remove foreign substances existing in the tube 114.

After the foreign substances in the tubes 114 are removed from the plurality of tubes 114 as described above, the conduits 210 are moved to the inside of the other tubes 114 of the plurality of tubes 114 Existing foreign matter can be removed.

Since the exhaust boiler cleaning apparatus according to the present embodiment is formed to directly communicate with the tube hole 112a of the header 112, it is possible to shorten the time required to remove the remaining water in the boiler, Can be improved. That is, only the tube 114 in which the remaining water is present is intensively cleaned without unnecessarily cleaning the tube 114 from which the remaining water has been removed, and the time required to remove the remaining water as a whole in the arrangement recovery boiler is reduced, The time required for production can be reduced, and the productivity can be improved.

Since a sponge (not shown) is formed in the tube 114 so as to be injected together with air, a sponge (not shown) absorbs the remaining water in the tube 114, As a result, the time required for producing the batch recovery boiler is further reduced, and the productivity can be further improved.

In addition, it is possible to prevent the air pressure applied to the tube 114 from being lowered as the air discharged through the conduit 210 of the batch recovery boiler cleaning device is directly injected into the tube 114. Thus, foreign substances such as rust and tangles existing in the tube 114 can be easily removed.

A sponge (not shown) wipes foreign matters such as rust and tearing inside the tube 114, so that the inside of the tube 114 is filled with a sponge (not shown) Foreign substances such as rust, toughness, etc. present in the resin can be more easily removed.

Further, the heat exchange performance of the batch recovery boiler can be improved by removing foreign substances such as rust and seaweed.

The sponge (not shown) is attached to the inner wall surface of the tube 114 to be able to shrink and expand so as to more effectively remove foreign matter. When the sponge (not shown) (Not shown) may be formed larger than the inner diameter of the tube 114. Preferably, the sponge (not shown) expands in a rectangular shape when no external force is applied, and is formed to contract in a shape corresponding to the internal shape (cylindrical shape) of the tube 114 when the sponge . In this case, since the sponge (not shown) is formed in a rectangular shape that is easy to manufacture, manufacturing cost for processing the sponge (not shown) may be reduced.

In this embodiment, the plurality of tubes 114 are sequentially cleaned, but at least two of the tubes 114 may be simultaneously cleaned. In other words, a plurality of the second tube portion 214 and the boss portion 216 are provided so that air and a sponge (not shown) injected into the first tube portion 212 are supplied to at least two or more of the plurality of tubes 114 As shown in FIG. At this time, it may be preferable that not all of the tubes 114 are cleaned at the same time so as to minimize a decrease in air pressure due to the branching of the air. In this case, the time required for removing the remaining water is further reduced, and the time required for producing the batch recovery boiler is further reduced, thereby further improving the productivity.

112: header 112a: tube hole
210: conduit 212: first tube
212a: Air inlet 212b: Sponge inlet
214: second tube portion 216: boss portion
216a: flange portion 216b:
216c: second insertion portion 220: air supply device
226: first valve 230:
231: cylinder 232: piston
233: first air hose 234: second air hose
235: second valve 235b: silencer
240: sealing member 250: guide mechanism
252: hub 252a: annular part
252b: protrusion 252c: slot
254: Supporting base 254b: Bearing insertion groove
256: Bearing 260: Sponge entry opening / closing cover

Claims (23)

A conduit that is inserted into the header of the batch recovery boiler having a header and a tube communicating with the tube hole of the header and communicating with the tube hole of the header; And
And an air supply device for supplying air to the conduit,
The conduit,
A first tube portion extending in one direction and having one end communicating with the air supply device;
A second tube portion bent radially outwardly of the first tube portion from the other end of the first tube portion; And
And a boss portion communicating the second tube portion and the tube hole. A plurality of tube holes extending in one direction and having a plurality of tube holes formed along the extending direction thereof and a plurality of tubes communicating with the plurality of tube holes, A conduit communicating with any of the tube holes; And
And an air supply device for supplying air to the conduit,
The conduit,
A first tube portion extending in one direction and having one end communicating with the air supply device;
A second tube portion bent radially outwardly of the first tube portion from the other end of the first tube portion; And
And a boss portion communicating the second tube portion with any one of the plurality of tube holes. 3. The method according to claim 1 or 2,
The first tube portion
An air inlet for guiding the air supplied from the air supply device to the inner space of the first tube portion; And
And a sponge input port for guiding the sponge supplied from the outside of the first tube portion to the inner space of the first tube portion,
Wherein the sponge inlet is located downstream of the air inlet. The method of claim 3,
A sponge inlet opening / closing cover rotatably installed in the first tube portion is formed in the first tube portion,
Wherein the sponge input opening / closing cover is provided with a through-hole for opening and closing the sponge input port in accordance with rotation of the sponge input port opening / closing cover. The method of claim 3,
Wherein the sponge is injected into the tube hole through the first tube portion, the second tube portion, and the boss portion together with the air introduced through the air inlet and into the sponge insertion port. 6. The method of claim 5,
Wherein an outer diameter of the sponge is larger than an inner diameter of the tube when an external force is not applied to the sponge. The method according to claim 6,
Wherein the sponge is formed in a rectangular shape. 3. The method according to claim 1 or 2,
And a tightening mechanism that is supported by the conduit on one side and the inner wall surface of the header on the other side and presses the conduit toward the tube hole side. 9. The method of claim 8,
The above-
A cylinder fixed to the conduit; And
And a piston reciprocating by the cylinder to contact and separate from the inner wall surface of the header,
Wherein the piston is moved toward the opposite side of the boss unit with respect to the conduit and is formed to be contactable with an inner wall surface of the header. 10. The method of claim 9,
Wherein the piston is disposed at the same position as the boss portion in the extending direction of the first conduit. 10. The method of claim 9,
The above-
A first air hose supplying air to the cylinder for reciprocating the piston;
A second air hose that recovers air from the cylinder to reciprocate the piston; And
And a valve selectively opening and closing the first air hose and the second air hose, respectively. 12. The method of claim 11,
Wherein the valve comprises:
Selectively communicating and shielding the first air hose with the internal space of the conduit,
And selectively communicates and shields the second air hose with the inner space of the conduit. 12. The method of claim 11,
Wherein the valve includes a muffler for reducing noise generated when opening and closing the first air hose and the second air hose. 3. The method according to claim 1 or 2,
And a sealing member interposed between the boss portion and the inner wall surface of the header. 15. The method of claim 14,
The boss portion
A flange portion formed in an annular shape;
A first insertion portion protruded from an inner peripheral portion of the flange portion and inserted into the second tube portion; And
And a second insertion portion protruding from the inner peripheral portion of the flange portion to the opposite side of the first insertion portion and inserted into the tube hole,
Wherein the sealing member is supported by at least one of the flange portion and the second inserting portion. 15. The method of claim 14,
Wherein the sealing member is formed of an elastic material. 3. The method according to claim 1 or 2,
And a guiding mechanism for guiding the conduit such that one side is supported by the conduit, the other side is supported on the inner wall surface of the header, and the conduit is moved along the inner space of the header. 18. The method of claim 17,
The guide mechanism includes:
A hub disposed on an outer circumferential surface of the conduit;
A support movably coupled to the hub, the support being in contact with and spaced from the inner wall of the header; And
And a bearing provided at an end of the support and movably supporting the support to the inner wall surface of the header. 19. The method of claim 18,
The hub includes:
An annular portion formed in an annular shape and into which the conduit is inserted; And
And a protrusion protruding radially outward from the annular portion of the annular portion,
And a slot into which the support member is inserted is formed in the protruding portion. 20. The method of claim 19,
Wherein the annular portion is rotatably coupled to the conduit. ≪ RTI ID = 0.0 > 15. < / RTI > 20. The method of claim 19,
The protrusions are formed in plural numbers, are arranged at equal intervals along the circumferential direction of the annular portion,
Wherein the support base and the bearing are respectively formed in a number corresponding to the number of the projections. 20. The method of claim 19,
The support base is formed to extend in one direction, one end portion is inserted into the slot, and the other end portion is formed with a bearing insertion groove into which the bearing is movably inserted,
Wherein the bearing is formed of a ball bearing. 3. The method according to claim 1 or 2,
Wherein the first pipe portion is formed by one pipe member or a plurality of segmented pipe members connected to each other.
KR1020160021294A 2016-02-23 2016-02-23 Cleaning apparatus for hrsg KR101853536B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160021294A KR101853536B1 (en) 2016-02-23 2016-02-23 Cleaning apparatus for hrsg

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160021294A KR101853536B1 (en) 2016-02-23 2016-02-23 Cleaning apparatus for hrsg

Publications (2)

Publication Number Publication Date
KR20170099203A true KR20170099203A (en) 2017-08-31
KR101853536B1 KR101853536B1 (en) 2018-06-20

Family

ID=59761348

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160021294A KR101853536B1 (en) 2016-02-23 2016-02-23 Cleaning apparatus for hrsg

Country Status (1)

Country Link
KR (1) KR101853536B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107413542A (en) * 2017-09-26 2017-12-01 桂林净美机电有限公司 Cavitating nozzle swivel head
CN109724095A (en) * 2019-01-28 2019-05-07 安庆市泰发能源科技有限公司 A kind of waste heat boiler for Hand scarf tube bank blocking of not stopping work
WO2020172283A1 (en) * 2019-02-20 2020-08-27 Quest Integrity Group, Llc Header delivery system
US11719377B2 (en) 2020-03-02 2023-08-08 Quest Integrity Group, Llc Header delivery system
US11774028B2 (en) 2020-02-19 2023-10-03 Quest Integrity Group, Llc Interchangeable seal head system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61165597A (en) * 1985-01-16 1986-07-26 Naisu Kk Nozzle position setting device for boiler super heater tube cleaning unit
JP2892630B2 (en) * 1997-02-19 1999-05-17 関電興業株式会社 Cleaning method inside the narrow tube of seawater heat exchanger
KR20010037297A (en) 1999-10-15 2001-05-07 윤영석 Jig device for testing water pressure for heat recovery steam generator
JP2004085190A (en) * 2002-08-23 2004-03-18 Conco Systems Inc Automated tube washing device
KR100862430B1 (en) * 2004-03-24 2008-10-08 아레바 엔피 게엠베하 Method for cleaning the pipes of a heat exchanger by means of an abrasive, and corresponding device
KR20100008790A (en) * 2007-06-08 2010-01-26 투베마스터 인코포레이티드 Method of cleaning tubes
KR101364651B1 (en) * 2013-01-07 2014-02-19 두산중공업 주식회사 Nozzle for a cleaning apparatus of a heat exchanger tube

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2886449B2 (en) * 1994-05-02 1999-04-26 晃栄化学工業株式会社 Heat exchanger tube cleaning method
JPH1163887A (en) * 1997-08-08 1999-03-05 Sakae Sangyo Kk Method and apparatus for removing dust adhering to heat transfer surface of heat exchanger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61165597A (en) * 1985-01-16 1986-07-26 Naisu Kk Nozzle position setting device for boiler super heater tube cleaning unit
JP2892630B2 (en) * 1997-02-19 1999-05-17 関電興業株式会社 Cleaning method inside the narrow tube of seawater heat exchanger
KR20010037297A (en) 1999-10-15 2001-05-07 윤영석 Jig device for testing water pressure for heat recovery steam generator
JP2004085190A (en) * 2002-08-23 2004-03-18 Conco Systems Inc Automated tube washing device
KR100862430B1 (en) * 2004-03-24 2008-10-08 아레바 엔피 게엠베하 Method for cleaning the pipes of a heat exchanger by means of an abrasive, and corresponding device
KR20100008790A (en) * 2007-06-08 2010-01-26 투베마스터 인코포레이티드 Method of cleaning tubes
KR101364651B1 (en) * 2013-01-07 2014-02-19 두산중공업 주식회사 Nozzle for a cleaning apparatus of a heat exchanger tube

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107413542A (en) * 2017-09-26 2017-12-01 桂林净美机电有限公司 Cavitating nozzle swivel head
CN109724095A (en) * 2019-01-28 2019-05-07 安庆市泰发能源科技有限公司 A kind of waste heat boiler for Hand scarf tube bank blocking of not stopping work
WO2020172283A1 (en) * 2019-02-20 2020-08-27 Quest Integrity Group, Llc Header delivery system
US11927294B2 (en) 2019-02-20 2024-03-12 Quest Integrity Group, Llc Header delivery system
US11774028B2 (en) 2020-02-19 2023-10-03 Quest Integrity Group, Llc Interchangeable seal head system
US11719377B2 (en) 2020-03-02 2023-08-08 Quest Integrity Group, Llc Header delivery system

Also Published As

Publication number Publication date
KR101853536B1 (en) 2018-06-20

Similar Documents

Publication Publication Date Title
KR101853536B1 (en) Cleaning apparatus for hrsg
US9285172B2 (en) Modular plate and shell heat exchanger
JP5433183B2 (en) Steam turbine and steam turbine plant system
RU2309314C2 (en) Multiple rod brush sealing unit for rotor apparatus (versions)
JP4794485B2 (en) Apparatus and steam turbine for controlling leakage in a steam turbine
KR101266917B1 (en) Super heater using the wavy fin
JPH01318703A (en) Steam turbine
CN101918783A (en) Heat exchanger
KR101579807B1 (en) Tube Expanding Apparatus and Tube Expanding Method
CN112191695A (en) Inner-cooling pinch roll body
US20150047194A1 (en) Tube expansion method
JP4731097B2 (en) Introduction structure and fixed flange for turbo generator
JP2014169698A (en) Dry ice cleaning apparatus for gas turbine compressor
CN110895182A (en) Helium leakage detection tool for welding seam of heat transfer pipe and pipe plate of steam generator
CN215909726U (en) Detachable fin type heat exchanger
JP5055467B2 (en) Apparatus for injecting water or steam into working medium of gas turbine equipment
CN211317645U (en) Helium leakage detection tool for welding seam of heat transfer pipe and pipe plate of steam generator
CN210108635U (en) Special leak detection device for steam turbine condenser
CN111380370A (en) High-efficiency continuous production type condensing device
CN111403057A (en) Water removal device for heat transfer pipe of passive residual heat-derived heat exchanger of nuclear power plant
CN212509917U (en) U-shaped heat exchange tube hydrostatic test device and combined device
CN218034248U (en) Drying cylinder body structure for textile printing and dyeing
KR20040100684A (en) Jig For Testing Hydraulic Pressure Of Heat Recovery Steam Generator
US11391413B2 (en) Steam trap
CN215811481U (en) Water cooler cooling tube leak hunting device

Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
N231 Notification of change of applicant
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant