CN214791252U

CN214791252U - Choked flow water-cooled wall

Info

Publication number: CN214791252U
Application number: CN202120210587.4U
Authority: CN
Inventors: 王妮萍
Original assignee: Wuxi Guanghua Boiler Manufacturing Co ltd
Current assignee: Wuxi Guanghua Boiler Manufacturing Co ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-11-19
Anticipated expiration: 2031-01-25

Abstract

The utility model relates to a field of boiler technique especially relates to a choked flow water-cooling wall, it includes the water-cooling wall, be equipped with the opening that matches with the combustor on the water-cooling wall, one side that the water-cooling wall is close to furnace is equipped with the choked flow retaining ring around the open-ended, the choked flow retaining ring includes a pair of choke tube that is formed by the curved system of water-cooling wall pipeline, the wear-proof plate has been laid respectively to one side that two choke tubes kept away from each other, the wear-proof plate is on a parallel with the tube shaft setting of water-cooling wall along the choke tube, be provided with a plurality of fastening components that are used for fixing the wear-proof plate to on the choke tube on the wear-proof plate. This application has the protection choke tube, improves its life's effect.

Description

Choked flow water-cooled wall

Technical Field

The application relates to the field of boiler technology, in particular to a flow-resisting water-cooled wall.

Background

The wall type combustion is a combustion mode commonly adopted by a direct flow boiler of a large thermal power generating unit, fuel and combustion improver required by combustion are fed into a boiler furnace from an opening of a water wall through a cyclone burner, the periphery of the furnace is composed of a membrane tube panel composed of the water wall and flat steel, and circulating cooling water is arranged in a pipeline of the water wall due to overhigh temperature of the furnace.

Chinese patent publication No. CN207350361U discloses a flow-blocking water-cooled wall, which comprises a water-cooled wall, wherein the water-cooled wall comprises a plurality of water-cooled wall pipelines, an opening which is used for blowing combustion improver into a furnace through a burner and is matched with the burner is arranged on the water-cooled wall, a flow-blocking check ring which prevents the flow slag from blocking the opening is arranged on one side of the water-cooled wall close to the furnace, and the flow-blocking check ring comprises a flow-blocking pipe formed by bending the water-cooled wall pipelines. The choke tube makes the flowing slag flow down along the outer wall of the choke tube and not directly flow to the opening.

In the related art, the flowing slag can cause abrasion to the choke pipe, and the service life of the choke pipe is shortened.

SUMMERY OF THE UTILITY MODEL

In order to protect the choke tube and prolong the service life of the choke tube, the application provides a choke water-cooled wall.

The utility model provides a choked flow water-cooling wall adopts following technical scheme:

the utility model provides a choked flow water-cooling wall, including the water-cooling wall, be equipped with the opening that matches with the combustor on the water-cooling wall, one side that the water-cooling wall is close to furnace is equipped with the choked flow retaining ring around the open-ended, the choked flow retaining ring includes a pair of choke tube that is formed by the water-cooling wall pipeline system of bending, the wear-resisting plate has been laid respectively to one side that two choke tubes kept away from each other, the wear-resisting plate is along the tube shaft setting that the choke tube is on a parallel with the water-cooling wall, be provided with a plurality of fastening components that are used for fixing the wear-resisting plate on the choke tube on the wear-resisting plate.

By adopting the technical scheme, when the flowing slag flows down along the water-cooled wall, the possibility that the flowing slag flows to the choke tube is reduced due to the existence of the wear-resistant plate, so that the wear of the choke tube is reduced, and then the flowing slag flows down along the wear-resistant plate, so that the opening is avoided. Through set up the wear plate on the choke tube, the wear plate will flow sediment and choke tube and keep apart to realized protecting the choke tube, improved its life's effect.

Optionally, the fastening assembly comprises a locking plate and a locking bolt, the locking plate is vertically arranged and connected to the side face, far away from the water-cooled wall, of the wear-resistant plate, a plurality of fixing seats are fixed on the tube body of the choke tube, and the locking bolt penetrates through the locking plate and is in threaded connection with the fixing seats.

Through adopting above-mentioned technical scheme, during the installation, the staff screws up the locking bolt and can make wear plate and choke tube stable connection, and when needs maintenance or change wear plate, the staff unscrews the locking bolt and can conveniently pull down the wear plate to work efficiency has been improved.

Optionally, a transition plate is connected between the end portions of the two wear-resistant plates, and the transition plate and the wear-resistant plates at the two ends of the transition plate are in smooth transition respectively.

By adopting the technical scheme, the transition plate has a blocking effect on the flowing slag flowing down from the upper part, so that the flowing slag enters the wear-resistant plates at two ends along the transition plate, the pipe body of the flow blocking pipe which is not covered by the wear-resistant plates is further protected, and the protection effect is improved.

Optionally, a flow blocking baffle for blocking the flowing slag is fixed on the side surface of the wear-resistant plate far away from the water-cooled wall.

By adopting the technical scheme, after the flowing slag flows to the wear-resistant plate, the flow-resisting baffle plate plays a role in blocking, and the possibility that the flowing slag flows out of the wear-resistant plate and falls into the opening is reduced.

Optionally, the side that the wear plate is close to the water-cooling wall is fixed with the drainage plate, and the drainage plate sets up towards the water-cooling wall slope.

Through adopting above-mentioned technical scheme, when flowing the sediment and flowing down along the water-cooling wall and when passing through the drainage plate, the drainage through the drainage plate gets into the wear plate, and simultaneously, the drainage plate plays the cushioning effect, has reduced the impact that the wear plate received to the wearing and tearing to the wear plate have been reduced.

Optionally, the side that the locking plate deviates from the choke pipe is provided with the protective cover, offers the holding tank that is used for holding the locking bolt on the protective cover.

Through adopting above-mentioned technical scheme, in the course of the work, the protective cover plays the guard action to the locking bolt, has reduced the piece of furnace chamber and has piled up in locking bolt department and lead to dismantling inconvenient possibility.

Optionally, the side that the locking plate deviates from the choke tube is provided with the thread groove, and the thread groove sets up along locking bolt's circumference, and the inside wall of holding tank is seted up with thread groove screw-thread fit's internal thread.

Through adopting above-mentioned technical scheme, the staff rotates the protective cover and can pull down it to make the locking bolt expose, and then made things convenient for the dismantlement to the wear plate.

Optionally, the pipe walls of the two choke pipes which are far away from each other are respectively paved with a limiting strip, and the side surface of the wear-resistant plate facing the choke pipes is provided with a limiting groove for inserting the limiting strip.

Through adopting above-mentioned technical scheme, spacing and spacing groove are mutually supported, have improved the stability of wear plate in the course of the work, have reduced the wear plate and have rocked and cause the possibility of wearing and tearing to the choke pipe.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the wear-resistant plate is arranged on the choke tube and separates the slag from the choke tube, so that the effect of protecting the choke tube and prolonging the service life of the choke tube is realized;

2. through setting up fastening components for the wearing plate passes through fastening components and the choke pipe can dismantle the connection, has made things convenient for the change and the maintenance clearance to the wearing plate.

Drawings

FIG. 1 is a schematic structural diagram for embodying a flow-impeding water wall in an embodiment of the present application.

Fig. 2 is a schematic structural diagram for embodying a wear plate in the embodiment of the present application.

Fig. 3 is an exploded view of an embodiment of the present application embodying a fastening assembly and a transition plate.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3 in an embodiment of the present application.

Fig. 5 is a schematic structural diagram for embodying the protecting cover in the embodiment of the present application.

Description of reference numerals: 01. a water cooled wall; 02. an opening; 1. a flow-resisting retainer ring; 11. a choke tube; 111. a fixed seat; 12. a limiting strip; 2. a wear plate; 21. a fastening assembly; 211. a locking plate; 212. locking the bolt; 22. a protective cover; 221. accommodating grooves; 23. a thread groove; 24. a limiting groove; 3. a drainage plate; 4. a flow-obstructing baffle; 41. mounting grooves; 5. a transition plate; 51. a transition drainage plate; 52. a transition baffle; 53. and (7) installing the block.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a flow-resisting water-cooled wall. Referring to fig. 1, the flow-resisting water-cooling wall comprises a vertically arranged water-cooling wall 01, the water-cooling wall 01 comprises a plurality of water-cooling wall pipelines, an opening 02 matched with the combustor is formed in the water-cooling wall 01, and the opening 02 is a circular opening. One side of the water-cooled wall 01 close to the hearth is provided with a flow blocking check ring 1 surrounding the opening 02, the flow blocking check ring 1 comprises a pair of flow blocking pipes 11 formed by bending water-cooled wall pipelines, the two flow blocking pipes 11 are symmetrically arranged about the vertical central line of the opening, and the pipe bodies of the two flow blocking pipes 11 parallel to the water-cooled wall are respectively distributed along the circumferential direction of the opening 02.

Referring to fig. 1 and 2, wear-resistant plates 2 are respectively laid on the pipe walls of the two choke pipes 11 away from each other, and the wear-resistant plates 2 are distributed along the circumferential direction of the opening 02. The side welding of wear plate 2 towards water-cooled wall 01 has drainage plate 3, and drainage plate 3 sets up towards water-cooled wall 01 slope, and drainage plate 3 keeps away from the side of wear plate 2 and pastes tight water-cooled wall 01. The side of the wear plate 2 far away from the water wall 01 is welded with a flow resisting baffle 4 for preventing the flowing slag from falling into the opening 02 from the edge of the wear plate 2. The baffle plates 4 are distributed along the circumference of the opening 02 and have an outer diameter greater than that of the wear plate 2.

Referring to fig. 3 and 4, a transition plate 5 is clamped between the end parts of the two wear plates 2 above the opening 02, and the transition plate 5 and the wear plates 2 at the two ends are in smooth transition. The transition plate 5 is towards the side fixedly connected with transition drainage plate 51 of water-cooling wall 01, and transition drainage plate 51 is located between two drainage plates 3, and the both ends of transition drainage plate 51 paste tight drainage plate 3 respectively. The side fixedly connected with transition baffle 52 that crosses cab apron 5 and keep away from water-cooling wall 01, transition baffle 52 is located between two choked flow baffle 4, and transition baffle 52 is close to choked flow baffle 4's tip fixedly connected with installation piece 53, offers the mounting groove 41 that is used for chucking installation piece 53 on choked flow baffle 4, and installation piece 53 is located mounting groove 41 and passes through bolted connection in corresponding choked flow baffle 4.

Referring to fig. 3 and 4, the wear plate 2 is provided with a plurality of fastening assemblies 21 for fixing the wear plate 2 to the choke pipe 11, and the fastening assemblies 21 include locking plates 211 and locking bolts 212 horizontally arranged. The locking plate 211 is fixedly connected to the side face, away from the water wall 01, of the flow blocking baffle 4, and a plurality of locking plates 211 are distributed along the circumferential direction of the opening 02. A plurality of fixing seats 111 are fixed on the choke tube 11 corresponding to the locking plates 211, the locking plates 211 correspond to the fixing seats 111 one by one, and the locking bolts 212 pass through the locking plates 211 and are in threaded connection with the corresponding fixing seats 111.

Referring to fig. 4 and 5, a protecting cover 22 is disposed on a side of the locking plate 211 facing away from the choke tube 11, and a receiving groove 221 for receiving the locking bolt 212 is formed in the protecting cover 22. The locking plate 211 is provided with a thread groove 23 on the side surface departing from the choke tube 11, and the thread groove 23 is an annular groove and is arranged along the circumferential direction of the locking bolt 212. The inside wall of holding tank 221 is seted up with thread groove 23 screw-thread fit's internal thread, and protective cover 22 threaded connection establishes locking bolt 212 in holding tank 221 and cover to play the guard action to locking bolt 212, reduced solid-state impurity direct contact's such as the flying dust in the furnace chamber possibility of locking bolt 212.

Referring to fig. 4 and 5, when the worker needs to detach the wear plate 2 to clean or replace the wear plate, the protective cover 22 is first unscrewed to expose the locking bolt 212, and then the wear plate 2 can be detached by unscrewing the locking bolt 212, which is convenient to operate.

Referring to fig. 3 and 4, a limiting strip 12 is fixedly connected to one side of each of the two choke tubes 11 away from each other, and the limiting strip 12 is parallel to the water wall 01 and is arranged along the circumferential direction of the opening 02. The side of wear-proof plate 2 towards choke tube 11 is seted up and is supplied spacing groove 24 that spacing strip 12 wore to establish, and when wear-proof plate 2 installed on choke tube 11, spacing strip 12 chucking was in spacing groove 24 to play spacing effect, reduced the possibility that wear-proof plate 2 rocked relative choke tube 11 in the course of the work.

The implementation principle of the flow-resisting water-cooled wall in the embodiment of the application is as follows: in the working process, the flowing slag flows down along the water wall pipeline, when the flowing slag passes through the drainage plate 3, the flowing slag flows onto the wear-resistant plate 2 along the drainage plate 3, and simultaneously, the flowing slag flowing onto the transition plate 5 also flows onto the wear-resistant plate 2 along the transition plate 5. In the process, the flow resisting baffle 4 plays a role of blocking, and the possibility that the flowing slag flows out of the wear-resisting plate 2 and falls into the opening 02 is reduced. The flowing slag flows downwards along the track enclosed by the transition plate 5, the wear-resistant plate 2 and the flow blocking baffle 4, so that the flowing slag cannot flow to the flow blocking pipe 11, the wear to the flow blocking pipe 11 is reduced, the flow blocking pipe 11 is protected, and the service life of the flow blocking pipe is prolonged.

Meanwhile, when the wear plate 2 needs to be detached for replacement or maintenance and cleaning, a worker can sequentially unscrew the protective cover 22 and the locking bolt 212, so that the operation is convenient.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a choked flow water-cooling wall, includes water-cooling wall (01), is equipped with opening (02) that match with the combustor on water-cooling wall (01), and one side that water-cooling wall (01) are close to furnace is equipped with choked flow retaining ring (1) around opening (02), and choked flow retaining ring (1) includes a pair of choked flow pipe (11) that are formed by the water-cooling wall pipe bending, its characterized in that: wear-resisting plate (2) have been laid respectively to one side that two choke tubes (11) kept away from each other, and wear-resisting plate (2) are on a parallel with the tube shaft setting of water-cooling wall (01) along choke tube (11), are provided with a plurality of fastening components (21) that are used for fixing wear-resisting plate (2) to on choke tube (11) on wear-resisting plate (2).

2. The flow-impeding water wall of claim 1, wherein: fastening components (21) include locking plate (211) and locking bolt (212), and locking plate (211) are connected in wear plate (2) and are kept away from the side of water-cooling wall (01), are fixed with a plurality of fixing bases (111) on the pipe shaft of choke tube (11), and locking bolt (212) pass locking plate (211) and threaded connection in fixing base (111).

3. The flow-impeding water wall of claim 1, wherein: the transition plates (5) are connected between the end parts of the two wear-resistant plates (2), and the transition plates (5) and the wear-resistant plates (2) at the two ends of the transition plates are in smooth transition respectively.

4. The flow-impeding water wall of claim 1, wherein: and a flow blocking baffle (4) for blocking the flowing slag is fixed on the side surface of the wear-resistant plate (2) far away from the water-cooled wall (01).

5. The flow-impeding water wall of claim 1, wherein: the side face of the wear-resistant plate (2) close to the water-cooled wall (01) is fixed with a drainage plate (3), and the drainage plate (3) is obliquely arranged towards the water-cooled wall (01).

6. The flow-impeding water wall of claim 2, wherein: the side face, deviating from the choke pipe (11), of the locking plate (211) is provided with a protective cover (22), and the protective cover (22) is provided with an accommodating groove (221) used for accommodating a locking bolt (212).

7. The flow-impeding water wall of claim 6, wherein: the side face, deviating from choke pipe (11), of locking plate (211) is provided with thread groove (23), thread groove (23) is arranged along the circumferential direction of locking bolt (212), and the inner thread matched with thread groove (23) in a threaded mode is arranged on the inner side wall of accommodating groove (221).

8. The flow-impeding water wall of claim 1, wherein: spacing strips (12) are respectively laid on the pipe walls of the two choke pipes (11) which are far away from each other, and a spacing groove (24) for inserting the spacing strips (12) is formed in the side surface, facing the choke pipes (11), of the wear-resistant plate (2).