CN215929540U

CN215929540U - Novel reheater desuperheater

Info

Publication number: CN215929540U
Application number: CN202121681840.0U
Authority: CN
Inventors: 林飞枚; 张庆; 侯丙军
Original assignee: Transtek Industries Hk Ltd
Current assignee: Transtek Industries Hk Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-03-01
Anticipated expiration: 2031-07-22

Abstract

The utility model discloses a novel reheater desuperheater, which comprises: a cylinder body, the interior of which is provided with an inner sleeve; the water spraying mechanism comprises a water spraying pipe and at least one spray head device. The two ends of the inner sleeve extend to the steam inlet end and the steam outlet end which are adjacent to the barrel body, the barrel body can be well protected, damage to the inner wall of the barrel body due to the fact that superheated steam scours the inner wall of the barrel body is avoided, the spray head device is further embedded in the side portion of the water spraying pipe and is arranged on the side away from the steam inlet end, the spray head device is not directly contacted with steam flow, and damage to the spray head due to the fact that the spray head is directly scoured by high-temperature steam is avoided.

Description

Novel reheater desuperheater

Technical Field

The utility model relates to the technical field of boiler equipment. More particularly, the present invention relates to a novel reheater desuperheater.

Background

The water spray desuperheater is formed by combining a desuperheater cylinder body, an inner sleeve, a nozzle device and the like. The water spraying and temperature reducing process includes spraying temperature reducing water directly into overheat steam, and mixing the temperature reducing water drops with the steam to lower the temperature of the steam. The water spray desuperheater is provided with a thin-walled inner sleeve mixing pipe, and aims to avoid thermal shock of incompletely atomized desuperheater water drops to a thick-walled desuperheater cylinder.

Along with the rise of the boiler parameters of the large power station, in order to meet the requirements of variable load or accident conditions and ensure the temperature uniformity of boiler reheaters, reheater intermediate water spray desuperheaters are arranged on a cross pipeline between a low-temperature reheater outlet header and a high-temperature reheater inlet header, and each desuperheater is controlled by an independent regulating valve. The water spray was taken from the center tap of the boiler feed pump. When the load of the boiler changes rapidly, the reheated steam temperature can be controlled accurately and rapidly by the reheater water spray attemperator, and the reheater water spray quantity is adjusted to be zero by the temperature adjusting baffle after the load of the boiler is stable. In addition, the spray head is directly contacted with high-temperature steam airflow, and the spray head is directly scoured by the high-temperature steam to cause the spray head to be damaged; the inner sleeve only sets up in steam inlet end or steam outlet end, can not fine protection desuperheater barrel, simultaneously because the desuperheater inner sleeve directly bears the reheater desuperheating water, if adopt the screw connection between inner sleeve and the barrel, lead to easily because thermal deviation leads to the easy fracture of inner sleeve to shift between inner sleeve and the barrel, cause great threat for boiler safe operation.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

The utility model also aims to provide a novel reheater desuperheater, wherein two ends of the inner sleeve extend to the steam inlet end and the steam outlet end which are adjacent to the barrel body, so that the barrel body can be well protected, the damage of the inner wall of the barrel body caused by the fact that superheated steam erodes the inner wall of the barrel body is avoided, the spray head device is further embedded at the side part of the water spray pipe and is the side deviating from the steam inlet end, the spray head device is not directly contacted with steam flow, and the damage of the spray head caused by the fact that the spray head is directly eroded by high-temperature steam is avoided.

To achieve these objects and other advantages in accordance with the purpose of the utility model, a new reheater desuperheater is provided, comprising:

the inner sleeve is coaxially arranged in the cylinder;

water spray mechanism, it includes:

one end of the spray pipe is positioned on one side of the cylinder body and is communicated with the desuperheating water pipeline, the other end of the spray pipe is perpendicular to the axial direction of the cylinder body, penetrates through the cylinder body and the inner sleeve and extends to the other side of the cylinder body, and the other end of the spray pipe is sealed;

and the spray nozzle device is positioned in the barrel, any spray nozzle device is embedded in one side of the spray pipe, which is far away from the steam inlet end of the barrel, and the water spray opening of the spray nozzle device faces the steam outlet end of the barrel.

Preferably, in the new reheater desuperheater, any of the spray head devices comprises:

the spray nozzle base is of a hollow cylinder structure embedded on one side face of the spray pipe, the axis of the spray nozzle base is perpendicular to the axis of the spray pipe, one end of the spray nozzle base close to the inside of the spray pipe is arranged in a closed mode, the other end of the spray nozzle base far away from the inside of the spray pipe is arranged in an open mode, a vertical hole is formed in the middle of the end face of one end of the spray nozzle base, and a plurality of cut-in holes are formed in the circumferential direction;

the nozzle is in a funnel shape, one end with a larger diameter of the nozzle is in sealing contact with the inner wall of the circumferential surface of the nozzle seat, and the other end with a smaller diameter extends out of the other end of the nozzle seat;

the nozzle atomization piece is connected inside the spray head in an inner connection mode, and the circle center of the nozzle atomization piece is located on the axis of the spray head.

Preferably, the novel reheater desuperheater has 6 cutting holes which are uniformly arranged at intervals along the circumferential direction.

Preferably, in the novel reheater desuperheater, the number of at least one spray nozzle device is 2, and the spray nozzle devices are arranged at intervals along the axial direction of the spray pipe.

Preferably, in the novel reheater desuperheater, one end of the spray pipe is sequentially and coaxially sleeved with a nozzle inlet and a first pipe seat, the nozzle inlet and the first pipe seat are both positioned outside the cylinder body, one end of the nozzle inlet is communicated with a desuperheating water pipeline, and the other end of the nozzle inlet is communicated with one end of the spray pipe; the inner wall of the first pipe seat is connected with the outer wall of the water spraying pipe through a bracket, one end of the first pipe seat is hermetically welded with the circumferential outer wall of the cylinder body, and the other end of the first pipe seat is welded with one end of the nozzle inlet.

Preferably, in the novel reheater desuperheater, a second pipe seat is coaxially sleeved at the other end of the spray pipe and is positioned outside the cylinder body, one end of the second pipe seat is hermetically welded with the circumferential outer wall of the cylinder body, and the other end of the second pipe seat is sealed by an end cover; the end cover is not contacted with the end surface of the other end of the water spray pipe;

an annular baffle is fixedly arranged on the inner wall of the second pipe seat, and a lining ring is fixedly sleeved outside the other end of the spray pipe; the liner ring is positioned between the baffle plate and the end cover, and the projection part of the baffle plate and the liner ring along the axial direction of the water spray pipe is overlapped.

Preferably, in the novel reheater desuperheater, a positioning ring and a stop block are welded on the inner wall of the cylinder body in sequence along the steam flow direction;

one end of the inner sleeve is welded with the positioning ring, the other end of the inner sleeve is welded with a plurality of supporting blocks which are distributed along the circumferential direction, any supporting block is positioned between the stop block and the positioning ring, the water spray pipe is positioned between any supporting block and the positioning ring, and the barrel does not limit the movement of any supporting block along the axial direction of the barrel; the distance between the stop block and the positioning ring is greater than the length of the inner sleeve at normal temperature, and the inner sleeve is overlapped with the projection part of the stop block along the axial direction of the barrel.

Preferably, in the novel reheater desuperheater, a hand hole is formed in the circumferential surface of the cylinder body and is close to the steam inlet end.

The utility model at least comprises the following beneficial effects: the two ends of the inner sleeve extend to the steam inlet end and the steam outlet end which are adjacent to the barrel body, the barrel body can be well protected, damage to the inner wall of the barrel body due to the fact that superheated steam scours the inner wall of the barrel body is avoided, the spray head device is further embedded in the side portion of the water spraying pipe and is arranged on the side away from the steam inlet end, the spray head device is not directly contacted with steam flow, and damage to the spray head due to the fact that the spray head is directly scoured by high-temperature steam is avoided.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic structural view of a new reheater desuperheater in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural view of a new reheater desuperheater in accordance with another embodiment of the present invention;

FIG. 3 is a schematic structural view of a head assembly according to another embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a sectional view taken along line B-B in fig. 3.

Description of reference numerals: 1-cylinder 2-inner sleeve 3-nozzle inlet 4-first pipe seat 5-bracket 6-water spray pipe 61-spray head device 611-spray head seat 6111-vertical hole 6112-cutting hole 612-spray head 613-nozzle atomization sheet 7-second pipe seat 71-baffle plate 8-end cover 9-liner ring 10-positioning ring 11-supporting block 12-stopper 13-hand hole.

Detailed Description

The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the utility model with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 2, the present invention provides a novel reheater desuperheater, including:

the inner sleeve 2 is coaxially arranged in the cylinder 1;

water spray mechanism, it includes:

one end of the spray pipe 6 is positioned at one side of the cylinder 1 and is communicated with a desuperheating water pipeline, the other end of the spray pipe is perpendicular to the axial direction of the cylinder 1, penetrates through the cylinder 1 and the inner sleeve 2 and extends to the other side of the cylinder 1, and the other end of the spray pipe 6 is sealed;

at least one spray head device 61 is arranged inside the barrel body 1, any spray head device 61 is embedded on one side of the water spraying pipe 6 far away from the steam inlet end of the barrel body 1, and the water spraying opening of the spray head device 61 faces the steam outlet end of the barrel body 1.

In the above technical scheme, two ends of the inner sleeve 2 of the present invention extend to the steam inlet end and the steam outlet end adjacent to the cylinder 1, so as to protect the cylinder 1 well, and prevent the damage to the inner wall of the cylinder 1 caused by the superheated steam scouring the inner wall of the cylinder 1, and further, the nozzle device 61 is embedded in the side portion of the water spraying pipe 6 and is one side deviating from the steam inlet end, so that the nozzle device 61 is not directly contacted with the steam flow, and the nozzle 612 is prevented from being damaged by the direct scouring of the high temperature steam.

In another technical solution, as shown in fig. 3 to 5, in the novel reheater desuperheater, any one of the nozzle devices 61 includes:

the spray head seat 611 is of a hollow cylinder structure embedded on one side surface of the spray pipe 6, the axis of the spray head seat 611 is perpendicular to the axis of the spray pipe 6, one end close to the interior of the spray pipe 6 is arranged in a closed manner, the other end far away from the interior of the spray pipe 6 is arranged in an open manner, a vertical hole 6111 is arranged in the middle of the end surface of one end of the spray head seat 611, and a plurality of cut-in holes 6112 are circumferentially arranged;

the nozzle 612 is in a funnel shape, one end of the nozzle 612 with a larger diameter is in sealing contact with the inner wall of the circumferential surface of the nozzle seat 611, and the other end with a smaller diameter extends out of the other end of the nozzle seat 611;

and a nozzle atomizing plate 613 which is internally connected inside the nozzle 612, wherein the center of the nozzle atomizing plate 613 is located on the axis of the nozzle 612.

In the above technical solution, the desuperheating water enters the nozzle device 61 from the water spraying pipe 6, enters the inside of the nozzle seat 611 through the vertical hole 6111 and the plurality of cut-in holes 6112 arranged on the nozzle seat 611, then enters the inside of the barrel 1 through the nozzle atomization sheet 613 and finally through the other end of the nozzle 612, the plurality of cut-in holes 6112 make the desuperheating water enter the nozzle atomization sheet 613 in a dispersed tangential direction at a certain angle, i.e. a high-speed rotation is generated, atomized into fine particles by means of centrifugal force, and then sprayed into the barrel 1 through the nozzle 612 forming an umbrella cover at a certain diffusion angle, and fully contacted and mixed with steam, so that heat exchange is effectively performed, and water drops are vaporized into steam by heat absorption. The nozzle 612 is embedded in the side part (the side opposite to the steam inlet end) of the water spraying pipe 6 through the nozzle seat 611, so that the nozzle 612 is not directly contacted with the steam flow, and the nozzle 612 is prevented from being damaged due to direct washing of high-temperature steam.

In another technical solution, the new reheater desuperheater has 6 cut-in holes 6112, and the cut-in holes are evenly distributed along the circumferential direction. Six cut-in holes 6112 are arranged in the technical scheme, so that the desuperheating water can uniformly and tangentially pass through the spray head seat 611, and is sprayed into the barrel 1 through the spray nozzle atomizing sheet 613 and the spray head 612 at a certain diffusion angle to be fully contacted and mixed with steam, heat exchange is effectively carried out, and water drops absorb heat and are vaporized into steam.

In another technical solution, in the novel reheater desuperheater, the number of at least one nozzle device 61 is 2, and the nozzle devices are axially spaced along the spray pipe 6. The reasonable number of the spray head devices 61 is set, so that the working efficiency of the desuperheater is improved as far as possible while the cost of the desuperheater is guaranteed to be feasible.

In another technical scheme, in the novel reheater desuperheater, a nozzle inlet 3 and a first pipe seat 4 are sequentially and coaxially sleeved at one end of a spray pipe 6, the nozzle inlet 3 and the first pipe seat 4 are both positioned outside the cylinder 1, one end of the nozzle inlet 3 is communicated with a desuperheating water pipeline, and the other end of the nozzle inlet 3 is communicated with one end of the spray pipe 6; the inner wall of the first pipe seat 4 is connected with the outer wall of the water spray pipe 6 through a bracket 5, one end of the first pipe seat 4 is hermetically welded with the circumferential outer wall of the barrel body 1, and the other end of the first pipe seat is welded with one end of the nozzle inlet 3.

Among the above-mentioned technical scheme, through nozzle entry 3 with spray pipe 6 and desuperheating water pipeline intercommunication, nozzle entry 3 sets up to the round platform structure, and is less than the other end with 6 intercommunications of spray pipe with the size of the one end of desuperheating water pipeline intercommunication, through first tube socket 4 and bracket 5 with the outer wall sealing fixed connection of spray pipe 6 and barrel 1.

In another technical scheme, in the novel reheater desuperheater, a second pipe seat 7 is coaxially sleeved at the other end of the water spray pipe 6 and is positioned outside the cylinder 1, one end of the second pipe seat 7 is hermetically welded with the circumferential outer wall of the cylinder 1, and the other end of the second pipe seat is sealed by an end cover 8; the end cover 8 is not contacted with the end surface of the other end of the water spray pipe 6;

an annular baffle 71 is fixedly arranged on the inner wall of the second pipe seat 7, and a lining ring 9 is fixedly sleeved outside the other end of the spray pipe 6; the liner ring 9 is located between the baffle 71 and the end cover 8, and the baffle 71 overlaps with the liner ring 9 in the axial direction of the sprinkler 6.

In the above technical solution, further, the second pipe seat 7 is sleeved below the water spray pipe 6, while ensuring the sealing connection between the water spray pipe 6 and the cylinder 1, a displacement space is provided for the water spray pipe 6 to move along the axial direction, so that the water spray pipe 6 is radially limited, the upper end is fixed by the bracket 5 and the first pipe seat 4, the lower end can directly perform limited free expansion with the end cover 8 in the support, that is, the water spray pipe 6 can freely expand in the axial direction, the fixing mode of the water spray pipe 6 makes the inherent frequency (natural vibration frequency) of the water spray pipe 6 itself much greater than the frequency of the karman vortex, and resonance is not easily caused. The baffle 71 can limit the upward movement of the spray pipe 6, and the spray pipe 6 is prevented from falling off.

In another technical scheme, in the novel reheater desuperheater, a positioning ring 10 and a stop block 12 are welded on the inner wall of a cylinder 1 in sequence along the steam flow direction;

one end of the inner sleeve 2 is welded with the positioning ring 10, the other end of the inner sleeve is welded with a plurality of supporting blocks 11 which are distributed along the circumferential direction, any supporting block 11 is positioned between the stop block 12 and the positioning ring 10, the water spray pipe 6 is positioned between any supporting block 11 and the positioning ring 10, and the barrel 1 does not limit the axial movement of any supporting block 11 along the barrel 1; the distance between the stop block 12 and the locating ring 10 is greater than the length of the inner sleeve 2 at normal temperature, and the projection part of the inner sleeve 2 and the stop block 12 along the axial direction of the barrel 1 is overlapped.

In above-mentioned technical scheme, inner skleeve 2 and barrel 1 adopt the spacing fixed mode of position circle 10 welding and dog 12, and this kind of unique fixed form for inner skleeve 2 one end is fixed, and one end can be along the free inflation of the axial of barrel 1, makes inner skleeve 2 can not become flexible the aversion, has avoided adopting threaded connection such as set bolt and stay bolt to make inner skleeve 2 welding seam fracture, phenomenons such as wearing and tearing on inner skleeve 2.

In a conventional water spray desuperheater structure, a desuperheater cylinder body 1 and a desuperheater inner sleeve 2 are fixed by screws generally, and the structure is that four round holes are formed in the periphery of the desuperheater cylinder body 1, the desuperheater inner sleeve 2 is fixed by the screws, and finally the screws are welded with the desuperheater cylinder body 1, so that the structure is difficult to mount and the fixation is unstable. Because this mode needs trompil and welding on the desuperheater barrel 1, the screw welds on barrel 1, plays the fixed inner skleeve 2 and can not slide. However, the actual welding fixed points are few, the stress of the positioning pin is large, due to the vibration of the inner sleeve 2 and other reasons, the positioning pin and the inner sleeve 2 are seriously abraded, the gap is seriously exceeded, the positioning pin is abnormal, the inner sleeve 2 inclines and cracks under the action of external force, and the falling fragments of the positioning pin and the like are easy to cause pipe burst accidents once falling into the reheater. Meanwhile, under the condition of frequent expansion with heat and contraction with cold, the welding position generates larger thermal stress, so that the sleeve is cracked, and the welding position of the screw and the desuperheater barrel body 1 is easy to leak, thereby causing production safety accidents.

In order to overcome the technical problem and meet the requirement of relative expansion between the desuperheater cylinder 1 and the inner sleeve 2, the technical scheme provides a unique connecting structure of the inner sleeve 2 and the cylinder 1, the desuperheater cylinder 1 is welded with a positioning ring 10 at the inlet end along the steam flow direction, the inner sleeve 2 is welded with the positioning ring 10, one end of the inner sleeve 2 is further fixed, the other end of the inner sleeve 2 is welded with a supporting block 11, the supporting block 11 is not welded with the desuperheater cylinder 1, the desuperheater cylinder 1 does not limit the movement of the supporting block 11 along the axial direction thereof, so that the supporting block 11 can play a supporting role in the other end of the inner sleeve 2 and also does not limit the inner sleeve 2 to be heated to generate displacement, meanwhile, in order to prevent the inner sleeve 2 from moving to the steam outlet end along the cylinder 1 after being damaged, a stop block 12 is welded on the inner wall of the cylinder 1 close to the steam outlet end, the stop block 12 can limit the inner sleeve 2, the inner sleeve 2 is prevented from falling out of the cylinder 1. This unique form of fixing of the inner sleeve 2 to the desuperheater is such that the inner sleeve 2 is not loosely displaced, while also taking into account the thermal displacement of the operating conditions, and is free to expand along the inner sleeve 2 in the direction of the barrel 1. Meanwhile, the opening and welding of the cylinder body 1 of the desuperheater are avoided, and the safety and the reliability of the inner sleeve 2 in the operation process of the desuperheater are improved.

In another technical scheme, in the novel reheater desuperheater, a hand hole 13 is formed in the position, close to the steam inlet end, of the circumferential surface of the cylinder 1. Set up hand hole 13 and conveniently monitor and maintain the barrel 1 inside.

The nozzle device 61 of the present invention is manufactured by a post-forging machining technique:

the conventional vortex type spray head 612 is a casting, and due to the characteristics of the manufacturing process, the surface of the casting is relatively rough, casting defects such as air holes, sand holes and the like are easily generated, residual stress is left, cracks are easily generated at the defect positions, once the cracks are generated, the cracks are easily expanded due to vibration or thermal shock, the cracking phenomenon of the spray head 612 is accelerated, and the defects of the casting are easily led to crack by observing the replaced spray head 612.

The desuperheater nozzle device 61 is machined after forging, and compared with the casting defects of castings, the forged piece is forged and formed, so that the structure is compact, the internal defects are not easy to occur, and residual stress is avoided, therefore, the forged piece is better in mechanical property, more impact-resistant and vibration-resistant.

The utility model has the following beneficial effects:

(1) the spray head device 61 with the spray head seat 611, the spray head 612 and the nozzle atomization sheet 613 is arranged, and the vertical hole 6111 and the plurality of cut-in holes 6112 are arranged on the spray head seat 611, so that the atomization effect of the spray head device 61 is greatly improved, and the working efficiency of the desuperheater is improved;

(2) the desuperheater spray head 612 is machined after forging, the machining process is good, and cracking is not prone to occurring. The desuperheater spray head device 61 is machined after forging, and compared with casting defects that the surface of a casting is relatively rough and is easy to generate air holes, sand holes and the like, a forging is formed by forging, the structure is compact, internal defects are not easy to generate, and residual stress does not exist, so that the forging has better mechanical property, better impact resistance and vibration resistance, and meanwhile, compared with the casting, the forging has good material technological property and small wall thickness in design, avoids larger internal and external wall temperature difference generated by thick walls, further reduces thermal stress and reduces the possibility of cracking of the spray head 612;

(3) the spray head device 61 is embedded in the spray pipe 6, so that the spray head device 61 is not directly contacted with steam flow, the spray head device 61 is prevented from being directly washed by high-temperature steam, and the spray head device is not easy to generate vibration damage;

(4) the inner sleeve 2 is not prone to cracking. Inner skleeve 2 and desuperheater barrel 1 adopt the spacing fixed mode of position circle 10 welding and dog 12, and this kind of unique fixed form for inner skleeve 2 one end is fixed, and the other end can freely expand along barrel 1, makes inner skleeve 2 can not become flexible the aversion, has avoided adopting threaded connection such as positioning bolt and stay bolt to make inner skleeve 2 welding seam fracture, phenomenon such as wearing and tearing on inner skleeve 2.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. A novel reheater desuperheater, comprising:

the inner sleeve is coaxially arranged in the cylinder;

water spray mechanism, it includes:

2. A novel reheater desuperheater of claim 1, wherein any one of the spray head arrangements comprises:

3. The new reheater desuperheater of claim 2, wherein the plurality of access holes is 6 and is evenly spaced circumferentially.

4. A novel reheater desuperheater according to claim 1, wherein the number of at least one nozzle assembly is 2, and the at least one nozzle assembly is spaced axially along the spray pipe.

5. The new reheater desuperheater of claim 1, wherein a nozzle inlet and a first pipe seat are coaxially sleeved on one end of the spray pipe in sequence, the nozzle inlet and the first pipe seat are both positioned outside the cylinder body, one end of the nozzle inlet is communicated with a desuperheating water pipeline, and the other end of the nozzle inlet is communicated with one end of the spray pipe; the inner wall of the first pipe seat is connected with the outer wall of the water spraying pipe through a bracket, one end of the first pipe seat is hermetically welded with the circumferential outer wall of the cylinder body, and the other end of the first pipe seat is welded with one end of the nozzle inlet.

6. The new reheater desuperheater of claim 5, wherein a second pipe seat is coaxially sleeved on the other end of the water spray pipe and located outside the cylinder, one end of the second pipe seat is hermetically welded with the circumferential outer wall of the cylinder, and the other end of the second pipe seat is sealed through an end cover; the end cover is not contacted with the end surface of the other end of the water spray pipe;

7. The new reheater desuperheater of claim 1, wherein a locating ring and a stop block are welded to an inner wall of the barrel in sequence along a steam flow direction;

8. A novel reheater desuperheater according to claim 1, wherein a hand hole is formed in a circumferential surface of the barrel proximate the steam inlet end.