CN215174968U - High temperature reheater wear prevention device - Google Patents
High temperature reheater wear prevention device Download PDFInfo
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- CN215174968U CN215174968U CN202120895285.5U CN202120895285U CN215174968U CN 215174968 U CN215174968 U CN 215174968U CN 202120895285 U CN202120895285 U CN 202120895285U CN 215174968 U CN215174968 U CN 215174968U
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Abstract
The utility model relates to a high temperature re-heater wear prevention device for the tubular metal resonator to near the high temperature re-heater of soot blower receives the hot side carries out the abrasionproof, including locating the pass pipe clamp on the tubular metal resonator that the high temperature re-heater received the hot side, wear-resisting case and abrasionproof cover, the tubular metal resonator includes the boiler tube that a plurality of equidistant parallel sets up, each boiler tube includes the U-shaped bend section respectively and locates the vertical tube section of its top, and the abrasionproof case covers and establishes being close to on the vertical tube section of soot blower one side, the abrasionproof cover includes straight abrasionproof cover and 90 abrasionproof covers, and straight abrasionproof cover covers and establishes on the boiler tube that the vertical tube section leans on the innermost circle of soot blower side, and the bottom welding of top and pass through the abrasionproof cover lapping plate and fix with the boiler tube of the outermost circle of soot blower, 90 abrasionproof cover covers and establishes on the boiler tube of U-shaped bend section near the soot blower. Compared with the prior art, the utility model has the advantages of reduce unit maintenance work load, prolong metal pipe life.
Description
Technical Field
The utility model belongs to the technical field of thermal power factory equipment abrasionproof and specifically relates to a high temperature reheater wear prevention device is related to.
Background
At present, a high-temperature reheater of a pi-type boiler of a thermal power plant is usually arranged in a horizontal flue at a furnace outlet and is of a suspension type tube panel structure. When the boiler operates, the heating surface of the high-temperature reheater can generate dust deposition and coking, so that heat transfer is deteriorated, and therefore, a long telescopic rotary type steam soot blower is arranged near the heating surface to perform soot blowing work on the heating surface so as to clean the heating surface.
The soot blowing medium usually adopts steam with the pressure of 1-1.5 MPa and the temperature of 350 ℃, the soot blower effectively blows the ash slag with the radius of about 1.5-2 m, and the kinetic energy of steam jet flow is utilized to blow the ash slag away from a heating surface, so that the heating surface is cleaned, and the adverse effect of scouring and thinning the metal pipe wall is also generated. The solution generally adopted for this case is: and an abrasion-proof tile is arranged on the outer surface of the pipe of the high-temperature reheater in the part of the soot blowing steam sweeping area. However, because the distance between the pipes is small, the wear-resistant tile cannot be installed on each pipe in the pipe row, so the wear-resistant tile is generally only installed on the first pipe of the outer ring facing the soot blowing steam side, and the wear-resistant tile cannot wrap the pipes in a whole circle, so the wear-resistant blind area is large, and the effect is not ideal.
In addition, the unevenness of the tube panel (the screen-type heating surface arranged in the hearth) causes partial tube discharge, so that the discharge tube is subjected to scouring wear, and one of the main reasons for the unevenness of the tube panel is as follows: the pipe clamp of the originally designed pipe panel has short service life under the action of high-temperature flue gas. The pipe clamp is of a plate type structure, the pipe clamp is small in fitting degree with a pipe, the cooling effect obtained through a medium in the pipe is poor, and the middle section of the pipe clamp is thinner due to the fact that the wall thickness of a steel plate is thin, so that the plate type pipe clamp is prone to failure conditions such as bending, cracking and high-temperature burning loss after being operated for a period of time.
To sum up, blow grey steam blowing loss to the high temperature reheater, the abrasionproof tile and the board-type pipe clamp of taking at present have great abrasionproof blind area and arouse the tube panel because of the pipe clamp inefficacy to go out the scheduling problem, and the speed that consequently is great and the attenuate by the boiler tube scope of blowing loss is very fast, simultaneously because the thin general 4 ~ 5mm that is of high tube wall thickness again, so easily arouse the pipe explosion accident, bring the hidden danger for unit safe operation to increase maintenance work load.
SUMMERY OF THE UTILITY MODEL
The object of the present invention is to provide a high temperature reheater wear prevention device for overcoming the above-mentioned drawbacks of the prior art.
The purpose of the utility model can be realized through the following technical scheme:
a high-temperature reheater anti-wear device is used for preventing a metal pipe of a high-temperature reheater heating surface near a soot blower from being worn, and comprises a hole-type pipe clamp, an anti-wear box and an anti-wear cover which are arranged on the metal pipe of the high-temperature reheater heating surface, the metal tube comprises a plurality of furnace tubes which are arranged in parallel at equal intervals, each furnace tube comprises a U-shaped bend section and a vertical tube section arranged above the U-shaped bend section, the hole-shaped pipe clamp is sleeved and clamped on the vertical pipe section of the metal pipe, the anti-abrasion box cover is arranged on the vertical pipe section close to one side of the soot blower, the anti-abrasion cover comprises a 90-degree anti-abrasion cover which is covered on the outermost ring furnace tube of the U-shaped bent tube section near the soot blower side and a straight anti-abrasion cover which is covered on the innermost ring furnace tube of the vertical tube section near the soot blower side, the top of the 90-degree anti-abrasion cover is welded with the bottom of the anti-abrasion box, and the top of the straight anti-abrasion cover is welded with the bottom of the hole type pipe clamp.
Further, the device also comprises a comb plate, and the comb plate is arranged at the central position of the U-shaped bent pipe section.
Further, the top of the wear-resistant box is welded with the hole type pipe clamp.
Furthermore, the 90-degree anti-abrasion cover and the straight anti-abrasion cover are respectively fixed with the corresponding furnace tubes through anti-abrasion cover butt straps.
Furthermore, the comb-shaped plate comprises a plate body and a plurality of strip-shaped holes which are arranged in parallel at equal intervals and arranged at one end of the plate body, the number of the strip-shaped holes is equal to that of the furnace tubes of the metal tube, the distance between every two strip-shaped holes is equal to that of every furnace tube of the metal tube, and the width of every strip-shaped hole is matched with the outer diameter of every furnace tube of the metal tube.
Further, the hole type pipe clamp comprises two clamping portions which are symmetrically arranged, the two clamping portions are respectively provided with a central connecting plate and a plurality of semicircular butt joint units which are symmetrically arranged on two sides of the central connecting plate and are arranged side by side, a semicircular hole for inserting each single furnace pipe of the vertical pipe section is formed in the central position of each semicircular butt joint unit, the two clamping portions are provided with paired accessories which are matched with each other, and the pipe clamp with a plurality of circular mounting holes is formed after the paired accessories are matched.
Furthermore, the number of the semicircular butt joint units of each clamping part is the same as that of the furnace tube bodies of the metal tubes, and the size and the shape of each semicircular hole are the same as the outer diameter size and the cross section shape of the furnace tube bodies of the metal tubes.
Furthermore, the pair of fittings comprises mounting bolts arranged between the semicircular butt joint units of one clamping part and mounting holes arranged on the other clamping part and used for being in butt joint with the mounting bolts.
Further, the inner diameter of the semicircular butt joint unit is the same as the outer diameter of each single furnace tube of the vertical tube section to be clamped.
Furthermore, the wear-proof cover butt strap is of an arc-shaped plate structure, and the inner diameter corresponding to the radian of the wear-proof cover butt strap is the same as the outer diameter of the furnace tube.
The utility model provides a high temperature reheater wear prevention device compares in prior art and includes following beneficial effect at least:
1) through install additional on the tubular metal resonator the utility model discloses wear proof device can effectively reduce the flue gas and soot blower to the erosion and abrasion that the boiler tube caused, reduces the probability that the boiler tube wearing and tearing explode the pipe of unit in the operation, also reduces unit maintenance work load simultaneously.
2) The adoption of the hole-shaped pipe clamp can greatly improve the fitting degree with the furnace pipe and is beneficial to cooling the pipe clamp; the material is made of high-temperature resistant stainless steel, so that the strength can be increased; the structure of pass pipe clamp is symmetrical structure, and spare part is few, the on-the-spot wafer formula installation of being convenient for, and difficult emergence is crooked, the fracture under high temperature flue gas environment, high temperature burning loss inefficacy condition such as lose efficacy, can prevent that the tube panel from appearing the tubulation phenomenon after long-term the use, effectively reduces the boiler tube and receives flue gas wearing and tearing and blow the damage of blowing the soot steam to increase of service life.
3) Through install high temperature resistant stainless steel's abrasionproof case additional on the tubular metal resonator that is close to the soot blower to install the abrasionproof cover additional in outer lane socle portion elbow cooperation, can will receive the boiler tube of the more obvious within range of soot blower blowing to surround completely, avoided conventional abrasionproof cover to have the blind area and shortcoming such as easily drop, and then effectively avoid the boiler tube blowing that the soot blower caused to lose.
4) The comb-shaped plate made of high-temperature-resistant stainless steel is arranged at the U-shaped bend section at the bottom of the adjacent tube panel, so that the distance between the adjacent tube panels is uniform and effectively fixed, and the aggravation of the abrasion of the tube panel with small distance caused by the fact that the flow speed of local smoke is too fast due to the uneven distance between the partial tube panels can be prevented.
Drawings
FIG. 1 is a schematic front view of an embodiment of a high-temperature reheater wear protection apparatus;
FIG. 2 is a schematic diagram illustrating a side view of an embodiment of a high temperature reheater wear protection apparatus;
FIG. 3 is a schematic diagram of a comb plate of the high temperature reheater wear prevention apparatus of an embodiment;
FIG. 4 is a schematic front view of a bore type tube clamp of the high temperature reheater wear prevention apparatus in an embodiment;
FIG. 5 is a schematic diagram of a side view of a bore clamp of the high temperature reheater wear prevention apparatus of an embodiment;
FIG. 6 is a schematic structural diagram of a straight wear prevention cover of the high temperature reheater wear prevention apparatus of the embodiment;
FIG. 7 is a schematic structural diagram of a 90 ° wear prevention cover of the high-temperature reheater wear prevention apparatus according to an embodiment;
FIG. 8 is a schematic diagram of an embodiment of a wear cap strap for the high temperature reheater wear apparatus;
FIG. 9 is a schematic diagram of a wear prevention box of the high temperature reheater wear prevention apparatus of the embodiment;
the reference numbers in the figures indicate:
1. the device comprises a hole type pipe clamp, 11, a semicircular butt joint unit, 12, a circular mounting hole, 13, a mounting bolt, 2, an anti-abrasion box, 31, a straight anti-abrasion cover, 32 and 90-degree anti-abrasion covers, 33, an anti-abrasion cover butt strap, 4, a comb-shaped plate, 41 plate bodies, 42, a long strip-shaped hole, 5, a soot blower, 6, a metal pipe, 61, a vertical pipe section, 62 and a U-shaped bent pipe section, 7 and a horizontal flue.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Examples
The utility model relates to a high temperature reheater wear prevention device installs on the tubular metal resonator 6 of the heating surface of high temperature reheater, and near high temperature reheater sets up soot blower 5. The metal tube 6 includes a plurality of furnace tubes arranged in parallel at equal intervals. The metal pipe 6 is arranged above the horizontal flue 7. As shown in fig. 1 to 2, the device comprises a hole type pipe clamp 1, an anti-abrasion box 2, an anti-abrasion cover 3 and a comb plate 4. The single tubes of the metal tube 6 of the heated surface of the high temperature reheater respectively comprise a U-shaped bend section 62 and a vertical tube section 61 above the U-shaped bend section 62. The sootblower 5 is arranged near the vertical pipe section 61 on the upper side of the U-shaped bent pipe section 62. The orifice type pipe clamp 1 is sleeved and clamped on the vertical pipe section 61 of the metal pipe 6.
The anti-abrasion box 2 is a rectangular box body with a hollow structure, as shown in fig. 9. The wear-resistant box 2 is covered on the vertical pipe section 61 close to one side of the soot blower 5, and the top of the wear-resistant box 2 is welded with the bottom of the hole type pipe clamp 1. Further, the height of the wear box 2: the upper part of the anti-abrasion box 2 props against the hole type pipe clamp 1, and the lower part of the anti-abrasion box is connected to the bending starting point of the furnace pipe at the inner side of the U-shaped bent pipe section 62; width of the wear-resistant box 2: the wear-resistant box 2 encloses all vertical pipe sections 61 near one side of the sootblower 5.
The wear prevention cover 3 comprises a straight wear prevention cover 31, a 90 ° wear prevention cover 32 and a wear prevention cover strap 33. The straight anti-wear cover 31 is of an open semicircular vertical tubular structure, is covered on the innermost furnace tube of the vertical tubular section 61 close to the soot blower 5 side, and is welded with the two ends of the anti-wear cover attachment strap 33 at the inner side of the open end after being covered on the furnace tube, so that the straight anti-wear cover 31 is tightly attached to the furnace tube. The top of the straight wear-proof cover 31 is welded with the bottom of the orifice type pipe clamp 1, so that the straight wear-proof cover can be prevented from falling.
The 90-degree wear-resistant cover 32 is a semi-closed tubular structure with a bend angle, as shown in fig. 7, the structure comprises a straight section and a bend angle section, the radian of the bend angle section is 90 degrees, the 90-degree wear-resistant cover 32 is arranged on the outer-most furnace tube of the side, close to the soot blower 5, of the U-shaped bend section 62 through an open end cover, after the cover is arranged on the furnace tube, the inner side of the open end of the 90-degree wear-resistant cover 32 is welded with two ends of a wear-resistant cover attachment plate 33, so that the wear-resistant cover is tightly attached to the furnace tube, and the top of the 90-degree wear-resistant cover 32 is welded with the bottom of the wear-resistant box 2, so that the wear-resistant cover can be prevented from falling.
As shown in fig. 8, the anti-wear cover strap 33 is an arc-shaped plate structure, and the inner diameter corresponding to the radian of the arc-shaped plate structure is the same as the outer diameter of the furnace tube, so that the inner sides of the open ends of the straight anti-wear covers 31 and the 90-degree anti-wear cover 32 can be stably welded with the anti-wear cover strap 33 to be completely attached to the furnace tube. Further, the height of the straight wear prevention cover 31: the upper part of the straight anti-wear cover 31 props against the hole type pipe clamp 1, and the lower part of the straight anti-wear cover reaches the bending starting point of the furnace pipe on the inner side of the U-shaped bent pipe section 62; height of 90 ° wear shield 32: the upper part of the 90-degree wear-resistant cover 32 props against the wear-resistant box 2, and the lower part of the 90-degree wear-resistant cover passes through the bending starting point 200mm from the outer side of the U-shaped bent pipe section 62 to the horizontal section of the furnace pipe.
The comb plate 4 is mounted in the center of the U-shaped pipe bend 62. As shown in fig. 3, the comb plate 4 includes a plate body 41 and elongated holes 42 arranged in parallel at equal intervals, and each of the elongated holes 42 is provided at one end of the plate body 41. The number of the elongated holes 42 is the same as that of the tube bodies of the metal tube 6, the distance between the elongated holes 42 is the same as that between a plurality of equally spaced and juxtaposed furnace tubes of the metal tube 6, and the width of each elongated hole 42 is matched with the outer diameter of the equally spaced and juxtaposed furnace tubes of the metal tube 6.
The hole-type pipe clamp 1 is of a symmetrical structure, and is cast in a symmetrical shape during manufacturing, as shown in fig. 4 and 5, the hole-type pipe clamp specifically comprises two symmetrically arranged clamping parts, the two clamping parts are respectively provided with a central connecting plate and a plurality of semicircular butt joint units 11 which are symmetrically arranged at two sides of the central connecting plate and arranged in parallel, and the number of the semicircular butt joint units 11 of each clamping part is the same as that of the furnace pipe bodies of the metal pipe 6; semicircular holes with the same size and shape are respectively arranged at the central positions of the semicircular butt joint units 11, and the size and the shape of each semicircular hole are the same as the outer diameter size and the cross section shape of the furnace tube body of the metal tube 6; the two clamping portions are butted to form a pipe clamp with a plurality of circular mounting holes 12. And mounting bolts 13 are respectively arranged between the semicircular butt joint units 11 of one clamping part, mounting holes for matching connection with the mounting bolts are formed in the other clamping part, and after the two clamping parts are butted, the two clamping parts are fixedly connected through the mounting bolts 13 and the mounting holes. The inner diameter of the semicircular butt joint unit 11 is the same as the outer diameter of each single furnace tube of the vertical tube section 61 to be clamped.
In this embodiment, preferably, the orifice pipe clamp 1, the wear-resistant box 2, the wear-resistant cover 3, and the comb plate are all made of stainless steel.
The high-temperature reheater abrasion-proof device can effectively sweep the furnace tube in the radius range for sealing by additionally arranging the abrasion-proof box and the abrasion-proof cover, and the abrasion-proof cover is synchronously additionally arranged on the furnace tube at the outermost circle of the metal tube, so that the damage of the furnace tube caused by the sweeping of the soot blower can be effectively avoided; meanwhile, the improved hole-type pipe clamps and the sparse plates are additionally arranged, so that the phenomenon that the tube panels are uneven in the intervals between the tubes and the adjacent tube panels can be prevented. The systematic high-temperature reheater abrasion-proof device can effectively reduce the erosion abrasion of the flue gas and the soot blower to the furnace tube, and prolong the service life of the high reheater tube.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a high temperature reheater wear prevention device for carry out the abrasionproof to tubular metal resonator (6) of the high temperature reheater heating surface near soot blower (5), its characterized in that, including pass pipe clamp (1), abrasionproof case (2) and abrasionproof cover (3) on tubular metal resonator (6) of locating high temperature reheater heating surface, tubular metal resonator (6) include a plurality of equidistant boiler tubes that set up side by side, each boiler tube includes U-shaped bend section (62) respectively and locates vertical straight tube section (61) of its top, pass pipe clamp (1) cover is established and is held on vertical tube section (61) of tubular metal resonator (6), wear-proof case (2) cover is established being close to on vertical straight tube section (61) of soot blower (5) one side, abrasionproof cover (3) are established including covering U-shaped bend section (62) are close to 90 on the boiler tube on the outer lane of soot blower (5) side and are established the straight tube cover (61) is close to the inner circle of soot blower (5) side The wear-resistant pipe comprises a straight wear-resistant cover (31) on a furnace pipe, wherein the top of the 90-degree wear-resistant cover (32) is welded with the bottom of a wear-resistant box (2), and the top of the straight wear-resistant cover (31) is welded with the bottom of a hole type pipe clamp (1).
2. The high temperature reheater wear protection arrangement of claim 1 further comprising a comb plate (4), said comb plate (4) being mounted in a central position of said U-shaped bent tube section (62).
3. The high temperature reheater wear protection device of claim 2 wherein the top of said wear protection box (2) is welded to said orifice type tube clamp (1).
4. The high-temperature reheater wear prevention device of claim 2 wherein said 90 ° wear prevention cover (32) and said straight wear prevention cover (31) are fixed to the corresponding furnace tubes by means of wear prevention cover straps (33), respectively.
5. The wear prevention device for the high-temperature reheater of claim 2 wherein the comb plate (4) comprises a plate body (41) and a plurality of elongated holes (42) which are arranged in parallel at equal intervals and are formed in one end of the plate body (41), the number of the elongated holes (42) is the same as that of the furnace tubes of the metal tube (6), the spacing between the elongated holes (42) is the same as that of the furnace tubes of the metal tube (6), and the width of each elongated hole (42) is matched with the outer diameter of each furnace tube of the metal tube (6).
6. The high-temperature reheater wear prevention device according to claim 1, wherein the orifice type pipe clamp (1) comprises two symmetrically arranged clamping portions, each clamping portion is provided with a central connecting plate and a plurality of semicircular butt joint units (11) symmetrically arranged on two sides of the central connecting plate in parallel, a semicircular hole for inserting each single furnace pipe of the vertical pipe section (61) is formed in the central position of each semicircular butt joint unit (11), and the two clamping portions are provided with matching fitting pieces which form a pipe clamp with a plurality of circular mounting holes (12) after matching.
7. The high-temperature reheater wear prevention device of claim 6 wherein the number of the semicircular butt joint units (11) of each clamping portion is the same as the number of the furnace tube bodies of the metal tube (6), and the size and shape of each semicircular hole are the same as the outer diameter and cross-sectional shape of the furnace tube bodies of the metal tube (6).
8. The high-temperature reheater wear prevention apparatus of claim 6 wherein the pair of fittings comprise mounting bolts (13) provided between the respective semicircular docking units (11) of one clamping portion and mounting holes provided in the other clamping portion for mating connection with the mounting bolts (13).
9. The high temperature reheater wear protection arrangement of claim 6 wherein the semi-circular docking unit (11) has an inner diameter dimension that is the same as the outer diameter dimension of each single tube of the vertical tube section (61) to be clamped.
10. The high-temperature reheater wear prevention device of claim 4, wherein the wear prevention cover straps (33) are of an arc-shaped plate structure, and the radian of the wear prevention cover straps (33) corresponds to an inner diameter which is the same as the outer diameter of the furnace tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120895285.5U CN215174968U (en) | 2021-04-28 | 2021-04-28 | High temperature reheater wear prevention device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120895285.5U CN215174968U (en) | 2021-04-28 | 2021-04-28 | High temperature reheater wear prevention device |
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| CN215174968U true CN215174968U (en) | 2021-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137596A (en) * | 2021-04-28 | 2021-07-20 | 华能国际电力股份有限公司上海石洞口第一电厂 | High temperature reheater wear prevention device |
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2021
- 2021-04-28 CN CN202120895285.5U patent/CN215174968U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137596A (en) * | 2021-04-28 | 2021-07-20 | 华能国际电力股份有限公司上海石洞口第一电厂 | High temperature reheater wear prevention device |
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