Novel sleeve structure for desuperheater of reheater

Abstract

The utility model provides a novel desuperheater sleeve structure of a reheater, and belongs to the field of desuperheater sleeves. The left side and the middle of a sleeve are fixed with a sleeve body through supporting screws, and the right side of the sleeve is fixed with the sleeve body through positioning screws; a hole is formed in the upper portion of the right side of the sleeve on the barrel body, a pipe connector is perpendicularly welded to the hole, the upper portion of the pipe connector is inserted into a desuperheater nozzle sleeve and welded and fixed at the joint, the upper portion of the desuperheater nozzle sleeve is inserted into a reheater spraying desuperheater nozzle and welded and fixed at the joint, and the bottom of the desuperheater nozzle sleeve makes contact with the inner wall of the barrel body. The bottom of the cylinder body is fixed through a screw, and the screw is welded to the bottom of the cylinder body after being screwed. And the left side of the part of the desuperheater nozzle sleeve exposed out of the cylinder body is provided with a hole and is vertically welded with a heating pipe joint. A complex tail end structure of the sleeve is omitted, the tail structure of the desuperheater spray pipe is optimized, the installation space of the desuperheater sleeve is saved, and the requirements of users are directly met under the condition that the trend of a reheater connecting pipe does not need to be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of reheater desuperheaters, in particular to a novel reheater desuperheater casing structure. Background Art

[0002] During the HONGSA project renovation, the owner needs to install a shell-and-tube desuperheater, but the two reheater desuperheaters need to be installed on two connecting pipes respectively. Figure 4 As shown, the connection pipes are located very close to each other. Figure 3 (as shown) It is not possible to directly install the traditional jacketed desuperheater, and the jacket length of the reheater desuperheater needs to be reduced to meet the installation requirements.

[0003] For supercritical and above units designed by Harbin Boiler, the reheater desuperheater is equipped with a heating pipe and a casing structure. The heating pipe is used to improve the sensitivity of the reheater spray water cooling and improve the overall thermal efficiency of the unit. When the heating pipe is set, a casing is required to block the main spray pipe and the desuperheater body. Due to structural limitations, the tail of the casing needs a larger space to accommodate the tail of the nozzle, such as Figure 3 As shown. However, due to the maturity of boiler development technology at that time, the subcritical unit designed by Harbin Boiler did not have a warm-up pipe structure in the reheater desuperheater during the HONGSA project reconstruction.

[0004] Currently, many users of subcritical units hope to set the reheater desuperheater to a warm pipe + casing structure when they improve the efficiency of the boiler. However, the space between the reheater connecting pipes of the subcritical unit is very close, which cannot be achieved according to the previous casing structure design. Therefore, it is urgent to design a new casing structure to meet user needs. Utility Model Content

[0005] The main purpose of the utility model is to provide a novel reheater desuperheater casing structure, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A novel reheater desuperheater casing structure, the novel reheater desuperheater casing structure comprises a reheater water spray desuperheater nozzle, a barrel, a sleeve, a desuperheater nozzle casing, a warming pipe joint, a pipe joint, a screw, a hand hole device, a positioning screw and a supporting screw,

[0008] The left side and the middle of the sleeve are fixed to the barrel by supporting screws, and the right side of the sleeve is fixed to the barrel by positioning screws; the upper right side of the sleeve on the barrel is opened with a hole and a pipe joint is vertically welded to the barrel, the upper part of the pipe joint is inserted into the desuperheater nozzle sleeve and welded and fixed at the connection, the upper part of the desuperheater nozzle sleeve is inserted into the reheater water spray desuperheater nozzle and welded and fixed at the connection, the bottom of the desuperheater nozzle sleeve is in contact with the inner wall of the barrel and the bottom of the barrel is fixed to the bottom of the desuperheater nozzle sleeve by screws, and the screws are tightened and welded to the bottom of the barrel; the left side of the desuperheater nozzle sleeve exposed from the barrel is opened with a hole and a warm pipe joint is vertically welded, and a hand hole device is provided on the right side of the desuperheater nozzle sleeve on the barrel.

[0009] The utility model discloses a novel reheater desuperheater sleeve structure. The reheater water spray desuperheater nozzle is divided into an upper half and a lower half. The diameter of the upper half is smaller than that of the lower half. The side of the lower half is provided with a nozzle.

[0010] The utility model discloses a novel reheater desuperheater sleeve structure. The size of the upper part of the reheater water spray desuperheater nozzle is Φ76, and the size of the lower part of the reheater water spray desuperheater nozzle is Φ168.

[0011] The utility model discloses a novel reheater desuperheater sleeve structure. The desuperheater nozzle sleeve is divided into two parts, the upper part is exposed outside, and the lower part extends into a pipe joint and a barrel body.

[0012] The utility model discloses a novel reheater desuperheater sleeve structure. The bottom of the reheater water spray desuperheater nozzle is a plane.

[0013] The utility model discloses a novel reheater desuperheater sleeve structure. A positioning plate is arranged on the side of the reheater water spray desuperheater nozzle and contacts the inner wall of the desuperheater nozzle sleeve.

[0014] The utility model discloses a novel reheater desuperheater sleeve structure. The bottom of the desuperheater nozzle sleeve is a plane, and a threaded hole is arranged at the bottom of the desuperheater nozzle sleeve.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model discloses a novel reheater desuperheater sleeve structure which eliminates the complex tail end structure of the sleeve, optimizes the tail structure of the desuperheater nozzle, saves the installation space of the desuperheater sleeve, and directly realizes the needs of users without adjusting the direction of the reheater connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a novel reheater desuperheater casing structure according to Example 1 of the utility model;

[0018] Figure 2 It is an enlarged view of the bottom of the desuperheater nozzle sleeve in a novel reheater desuperheater sleeve structure in Example 1 of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the reheater desuperheater casing structure of the original design;

[0020] Figure 4 This is a schematic diagram of the connecting pipe during the HONGSA project renovation;

[0021] In the figure: 1 is the reheater water spray desuperheater nozzle; 2 is the barrel; 3 is the sleeve; 4 is the desuperheater nozzle casing; 5 is the heating pipe joint; 6 is the pipe joint; 7 is the screw; 8 is the hand hole device; 9 is the positioning screw; 10 is the supporting screw. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] like Figure 1-2 As shown, a novel reheater desuperheater casing structure, the novel reheater desuperheater casing structure includes a reheater water spray desuperheater nozzle, a barrel, a sleeve, a desuperheater nozzle casing, a warming pipe joint, a pipe joint, a screw, a hand hole device, a positioning screw and a supporting screw,

[0025] The left side and the middle of the sleeve are fixed to the barrel by supporting screws, and the right side of the sleeve is fixed to the barrel by positioning screws; the upper right side of the sleeve on the barrel is opened with a hole and a pipe joint is vertically welded to the barrel, the upper part of the pipe joint is inserted into the desuperheater nozzle sleeve and welded and fixed at the connection, the upper part of the desuperheater nozzle sleeve is inserted into the reheater water spray desuperheater nozzle and welded and fixed at the connection, the bottom of the desuperheater nozzle sleeve is in contact with the inner wall of the barrel and the bottom of the barrel is fixed to the bottom of the desuperheater nozzle sleeve by screws, and the screws are tightened and welded to the bottom of the barrel; the left side of the desuperheater nozzle sleeve exposed from the barrel is opened with a hole and a warm pipe joint is vertically welded, and a hand hole device is provided on the right side of the desuperheater nozzle sleeve on the barrel.

[0026] The hand hole device is used to operate the inside of the barrel.

[0027] The utility model discloses a novel reheater desuperheater sleeve structure, wherein the reheater water spray desuperheater nozzle is divided into an upper half and a lower half, the diameter of the upper half is smaller than the diameter of the lower half, and a nozzle is arranged on the side of the lower half. The diameter of the upper half of the reheater water spray desuperheater nozzle is small, the diameter of the lower half is large, and the connection between the upper half and the lower half is naturally transitioned; when the reheater water spray desuperheater nozzle is inserted into the desuperheater nozzle sleeve, the nozzle faces the direction of the sleeve.

[0028] The utility model discloses a novel reheater desuperheater sleeve structure, wherein the size of the upper part of the reheater water spray desuperheater nozzle is Φ76, and the size of the lower part of the reheater water spray desuperheater nozzle is Φ168. The lengths of the upper part and the lower part of the reheater water spray desuperheater nozzle can be adjusted according to the actual engineering situation.

[0029] The utility model discloses a novel reheater desuperheater sleeve structure, wherein the desuperheater nozzle sleeve is divided into upper and lower parts, the upper part is exposed outside, and the lower part is inserted into the pipe joint and the barrel. The upper and lower sides of the upper part of the desuperheater nozzle sleeve are respectively connected with the reheater water spray desuperheater nozzle and the pipe joint, and the barrel is provided with the pipe joint, the upper part of the desuperheater nozzle sleeve and the upper part of the reheater water spray desuperheater nozzle from bottom to top, and the lower part sleeve of the desuperheater nozzle sleeve goes deep into the pipe joint and the barrel to protect the reheater water spray desuperheater nozzle.

[0030] The utility model discloses a novel reheater desuperheater sleeve structure. The bottom of the desuperheater nozzle sleeve is a plane, and a threaded hole is arranged at the bottom of the desuperheater nozzle sleeve.

[0031] The utility model discloses a novel reheater desuperheater sleeve structure, wherein the bottom of the reheater water spray desuperheater nozzle is a plane. The desuperheater nozzle sleeve is a plane that contacts the bottom of the barrel and is fixed by screws; therefore, the bottom of the reheater water spray desuperheater nozzle is also a plane, the reheater water spray desuperheater nozzle is arranged in the desuperheater nozzle sleeve, and the bottom of the reheater water spray desuperheater nozzle is at a distance from the bottom of the desuperheater nozzle sleeve.

[0032] The utility model discloses a novel reheater desuperheater sleeve structure, wherein a positioning plate is arranged on the side of the reheater water spray desuperheater nozzle to contact the inner wall of the desuperheater nozzle sleeve. A positioning plate is arranged on the outer side of the reheater water spray desuperheater nozzle, and when the reheater water spray desuperheater nozzle extends into the desuperheater nozzle sleeve, the reheater water spray desuperheater nozzle and the desuperheater nozzle sleeve are supported and fixed by the positioning plate, thereby ensuring the position of the reheater water spray desuperheater nozzle and ensuring that the reheater water spray desuperheater nozzle does not deviate in the desuperheater nozzle sleeve.

[0033] The utility model discloses a novel reheater desuperheater sleeve structure, wherein the bottom of the desuperheater nozzle sleeve is a plane, and a threaded hole is arranged at the bottom of the desuperheater nozzle sleeve. The bottom of the desuperheater nozzle sleeve is a plane, and the plane contacts the bottom of the barrel, and a screw is inserted into the bottom of the barrel through the threaded hole at the bottom of the desuperheater nozzle sleeve to achieve the purpose of fixing the desuperheater nozzle sleeve.

[0034] Example 2

[0035] like Figure 1-4 As shown, a new type of reheater desuperheater sleeve structure, in order to shorten the tail of the prototype desuperheater nozzle, this part of the structure is redesigned and drawn, and the new nozzle tail structure is used to achieve the previous function, and the nozzle is fixed by screws. Through this improvement, the tail protrusion structure of the desuperheater is removed, so that the desuperheater can be placed in the reheater pipe without interference.

[0036] The prototype desuperheater has a large pipe joint and end cover under the nozzle to accommodate the tail of the nozzle. The new desuperheater shortens the tail of the nozzle and eliminates this large pipe joint and end cover.

[0037] The left side and the middle of the sleeve are rotatably fixed around the central axis of the barrel by multiple supporting screws in the barrel, and the right side of the sleeve is rotatably fixed around the central axis of the barrel by multiple positioning screws in the barrel; a hole is opened in the upper right part of the sleeve on the barrel and pipe joints are vertically welded around the opening, the desuperheater nozzle sleeve is inserted from the upper part of the pipe joint and welded and fixed at the connection between the pipe joint and the desuperheater nozzle sleeve, screws are screwed in from the bottom of the barrel to fix the bottom of the desuperheater nozzle sleeve to the barrel, so as to fix the desuperheater nozzle sleeve, and the screws are tightened and welded to the bottom of the barrel; then the reheater water spray desuperheater nozzle is inserted from the upper part of the desuperheater nozzle sleeve and welded and fixed at the connection between the desuperheater nozzle sleeve and the reheater water spray desuperheater nozzle, the reheater water spray desuperheater nozzle faces the direction of the sleeve, the left side of the desuperheater nozzle sleeve exposed from the sleeve is opened and warm pipe pipe joints are vertically welded around the opening, and a hand hole device is arranged on the right side of the desuperheater nozzle sleeve on the barrel.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A new type of reheater desuperheater casing structure, characterized by: The novel reheater desuperheater casing structure comprises a reheater water spray desuperheater nozzle (1), a barrel (2), a sleeve (3), a desuperheater nozzle casing (4), a heating pipe joint (5), a pipe joint (6), a screw (7), a hand hole device (8), a positioning screw (9) and a supporting screw (10). The left side and the middle of the sleeve (3) are fixed to the barrel (2) by means of support screws (10), and the right side of the sleeve (3) is fixed to the barrel (2) by means of positioning screws (9); a pipe joint (6) is vertically welded to the upper right side opening of the sleeve (3) on the barrel (2), the upper part of the pipe joint (6) is inserted into the desuperheater nozzle sleeve (4) and fixed by welding at the connection, the upper part of the desuperheater nozzle sleeve (4) is inserted into the reheater water spray desuperheater nozzle (1) and fixed at the connection The bottom of the desuperheater nozzle sleeve (4) is in contact with the inner wall of the barrel (2) and the bottom of the barrel (2) is fixed to the bottom of the desuperheater nozzle sleeve (4) by means of a screw (7). The screw (7) is tightened and then welded to the bottom of the barrel (2); a left opening is formed on the portion of the desuperheater nozzle sleeve (4) exposed from the barrel (2) and a heating pipe joint (5) is vertically welded thereto; a hand hole device (8) is provided on the right side of the desuperheater nozzle sleeve (4) on the barrel (2).

2. The novel reheater desuperheater casing structure according to claim 1 is characterized in that: The reheater water spray desuperheater nozzle (1) is divided into an upper part and a lower part, the diameter of the upper part is smaller than the diameter of the lower part, and a nozzle is arranged on the side of the lower part.

3. The novel reheater desuperheater casing structure according to claim 2 is characterized in that: The size of the upper part of the reheater water spray desuperheater nozzle (1) is Φ76, and the size of the lower part of the reheater water spray desuperheater nozzle (1) is Φ168.

4. The novel reheater desuperheater casing structure according to claim 1 is characterized in that: The desuperheater nozzle sleeve (4) is divided into two parts, an upper part and an lower part, wherein the upper part is exposed to the outside and the lower part extends into the pipe joint (6) and the barrel (2).

5. The novel reheater desuperheater casing structure according to claim 1 is characterized in that: The bottom of the reheater water spray desuperheater nozzle (1) is a flat surface.

6. The novel reheater desuperheater casing structure according to claim 1 is characterized in that: A positioning plate is provided on the side of the reheater water spray desuperheater nozzle (1) and contacts the inner wall of the desuperheater nozzle sleeve (4).

7. The novel reheater desuperheater casing structure according to claim 1 is characterized in that: The bottom of the desuperheater nozzle sleeve (4) is a plane, and a threaded hole is provided at the bottom of the desuperheater nozzle sleeve (4).

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