CN214275673U

CN214275673U - Pipeline structure of water cooled wall of once-through boiler

Info

Publication number: CN214275673U
Application number: CN202120209571.1U
Authority: CN
Inventors: 张新忠
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: 2021-09-24
Anticipated expiration: 2031-01-25

Abstract

The utility model relates to a pipeline structure of a water-cooled wall of a once-through boiler, which comprises a middle transition mixing header, wherein a plurality of installation through holes are arranged on the middle transition mixing header, installation pipes penetrate through the installation through holes, a connecting sleeve is sleeved outside a pipe body of each installation pipe, the installation pipes are positioned outside the middle transition mixing header, one end of the connecting sleeve is connected with the outer side wall of the middle transition mixing header through a fastening component, the other end of the connecting sleeve is fixedly connected with a first butt-joint lantern ring, a transition pipe penetrates through the connecting sleeve, the transition pipe is in butt joint with the end part of each installation pipe, a second butt-joint lantern ring is fixedly connected on each transition pipe, a plurality of connecting screws are hinged on the side surface of the first butt-joint lantern ring away from the second butt-joint lantern ring, a plurality of installation grooves for the connecting screws to pass through are arranged on the first butt-joint lantern ring and the second butt-joint lantern ring which are mutually attached, and the end part of the hinged end part of each connecting screw is connected with an installation nut, the mounting nut abuts against the second abutting lantern ring. This application has the more convenient effect of dismouting that makes the water pipe.

Description

Pipeline structure of water cooled wall of once-through boiler

Technical Field

The utility model relates to the field of boiler technology, especially, relate to a pipeline structure of once-through boiler water-cooling wall.

Background

The once-through boiler is a boiler in which feed water is sequentially passed through an economizer, an evaporation heating surface (water wall), and a superheater by the pressure of a feed water pump and is completely changed into superheated steam. After the feed water enters the boiler, the heating, the evaporation and the overheating of the water vapor are continuously carried out in the heating surface, and the steam-water separation during the heating process is not needed. Therefore, it does not have the drum of a natural circulation boiler.

Chinese patent No. CN101586802A discloses a once-through boiler water-cooling wall, which comprises a lower spiral water-cooling wall composed of lower spiral water-cooling wall tubes and an upper vertical water-cooling wall composed of upper vertical water-cooling wall tubes, wherein the lower spiral water-cooling wall and the upper vertical water-cooling wall are directly transited by a once intermediate transition mixing header, and all working media in the lower spiral water-cooling wall inlet header enter the lower spiral water-cooling wall tubes to uniformly absorb heat, then enter the intermediate transition mixing header, and then enter the upper vertical water-cooling wall tubes.

In view of the above-mentioned related art, the inventor believes that the water pipes connected to the intermediate transition mixing header are large in number and are fixedly connected, and when a certain water pipe needs to be replaced, the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to make the dismouting to the water pipe more convenient, this application provides a pipeline structure of once-through boiler water-cooling wall.

The application provides a pipeline structure of once-through boiler water-cooling wall adopts following technical scheme:

a pipeline structure of a water-cooled wall of a direct-flow boiler comprises a middle transition mixing header, wherein a plurality of installation through holes are formed in the middle transition mixing header, installation pipes penetrate through the installation through holes, one ends of the installation pipes are positioned in the middle transition mixing header, the other ends of the installation pipes penetrate out of the middle transition mixing header, a connecting sleeve is sleeved outside a pipe body of the installation pipes positioned outside the middle transition mixing header, one end of the connecting sleeve is connected to the outer side wall of the middle transition mixing header through a fastening assembly, a first butt joint sleeve ring is fixedly connected to the other end of the installation pipes, a transition pipe penetrates through the connecting sleeve, the end part of the transition pipe positioned in the connecting sleeve is in butt joint with the end part of the installation pipes, the other end of the transition pipe, far away from the connecting sleeve, is communicated to a corresponding water-cooled wall pipe, a second butt joint sleeve ring attached to the first butt joint sleeve ring is fixedly connected to the pipe body of the transition pipe, and a plurality of connecting screw rods are hinged to the side surface of the first butt joint sleeve ring, far away from the second butt joint sleeve ring, set up a plurality of mounting grooves that supply connecting screw to pass through on the first butt joint lantern ring of laminating each other and the second butt joint lantern ring, connecting screw keeps away from the tip of hinged end and rotates to the second butt joint lantern ring and keep away from one side of the first butt joint lantern ring and threaded connection has mounting nut, and mounting nut supports the side that the first butt joint lantern ring was kept away from to the second butt joint lantern ring tightly.

By adopting the technical scheme, when the transition pipe needs to be disassembled, a worker unscrews the mounting nut and turns the connecting screw rod open, so that the transition pipe can be conveniently taken out from the connecting sleeve, and the transition pipe is replaced and is convenient to operate; when the transition pipe needs to be installed, the end part of the transition pipe is inserted into the butt joint sleeve by a worker, so that the transition pipe is in butt joint with the installation pipe, meanwhile, the second butt joint sleeve abuts against the first butt joint sleeve, the connection screw rod is rotated to one side, away from the first butt joint sleeve, of the second butt joint sleeve at the moment, the installation nut is screwed up to enable the connection screw rod to abut against the second butt joint sleeve, and installation of the transition pipe can be completed. Through setting up transition pipe, connecting sleeve and the connecting screw that mutually supports, realized making the more convenient effect of dismouting to the water pipe.

Optionally, the fastening assembly includes a plurality of fastening bolts, the connecting sleeve is close to the fixed ring of the outer side wall fixedly connected with of the intermediate transition mixing header, and the fastening bolts pass through the fixed ring and are in threaded connection with the outer side wall of the intermediate transition mixing header.

Through adopting above-mentioned technical scheme, the staff screws up fastening bolt and can make adapter sleeve and middle transition mix the collection case and be connected steadily, simultaneously, has also made things convenient for tearing open of adapter sleeve and has traded.

Optionally, the inner side wall of the mounting through hole is fixedly connected with an inner thread sleeve, and an outer thread matched with the inner thread sleeve in a threaded manner is arranged on the outer side wall of the mounting pipe.

Through adopting above-mentioned technical scheme for can dismantle the connection between installation pipe and the installation through-hole, thereby made things convenient for the change and the maintenance to the installation pipe.

Optionally, an elastic buffer layer is laid on the inner side wall of the connecting sleeve.

Through adopting above-mentioned technical scheme, after the staff establishes the installation pipe with the connecting sleeve cover, elastic buffer layer pastes tight installation pipe, is heated the inflation back when the installation pipe, and elastic buffer layer is by extrusion shrink to reduced the installation pipe and received the influence that the thermal energy brought.

Optionally, the end of the installation pipe facing the transition pipe is laid with an elastic sealing layer.

By adopting the technical scheme, the sealing performance of the joint of the installation pipe and the transition pipe is improved, and the possibility of water leakage is reduced.

Optionally, the lateral wall of transition pipe is provided with the gib block that distributes along its length direction, and the guide way that is used for holding the gib block is offered to connecting sleeve's inside wall, and gib block and guide way cooperation of sliding.

Through adopting above-mentioned technical scheme, the cooperation that slides each other of guide way and gib block has reduced when the installation and the use in the transition pipe emergence skew possibility.

Optionally, the installation pipe is connected with an on-off valve, and the connecting sleeve is provided with an opening for the on-off valve to pass through.

Through adopting above-mentioned technical scheme, when changing the transition pipe, the staff rotates the start-stop valve for the installation pipe seals, has reduced the possibility that takes place to leak when changing.

Optionally, an anti-rust layer is laid on the inner side wall of the installation pipe.

By adopting the technical scheme, the anti-rust layer can isolate the water and the pipe wall of the installation pipe, and the possibility that the installation pipe is rusted is reduced.

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

1. the transition pipe, the connecting sleeve and the connecting screw rod which are matched with each other are arranged, so that the effect of more convenient assembly and disassembly of the water pipe is realized;

2. through setting up gib block and guide way of mutually supporting, reduced when the installation and in the use transition pipe emergence skew possibility.

Drawings

FIG. 1 is a schematic structural diagram of a pipeline structure for embodying a once-through boiler water wall in the embodiment of the present application.

Fig. 2 is a sectional view for embodying the inner structure of the connection sleeve in the embodiment of the present application.

Fig. 3 is an enlarged schematic view of a portion a in fig. 1 in an embodiment of the present application.

Description of reference numerals: 1. a middle transition mixing header; 2. mounting a through hole; 21. an internally threaded sleeve; 3. installing a pipe; 31. opening and closing the valve; 311. a valve stem; 312. a valve plate; 313. a hand wheel; 32. an elastomeric sealing layer; 33. a rust-proof layer; 4. a connecting sleeve; 41. a fixing ring; 42. a fastening assembly; 421. fastening a bolt; 43. a guide groove; 44. an elastic buffer layer; 5. a first docking collar; 51. a hinge plate; 52. connecting a screw rod; 53. mounting grooves; 54. mounting a nut; 6. a transition duct; 61. a second docking collar; 62. and (4) a guide strip.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses pipeline structure of once-through boiler water-cooling wall. Referring to fig. 1 and 2, the pipeline structure of the once-through boiler water wall includes a middle transition mixing header 1, and a section of the middle transition mixing header 1 perpendicular to the axial direction is in a ring shape. Three groups of mounting through holes 2 distributed along the circumferential direction of the middle transition mixing header 1 are formed in the middle transition mixing header 1, and the mounting through holes 2 in the same group are uniformly distributed along the axial direction of the middle transition mixing header 1. The installation through holes 2 are arranged along the radial direction of the middle transition mixing header 1, and an installation pipe 3 penetrates through each installation through hole 2.

Referring to fig. 2 and 3, the inner side wall of the installation through hole 2 is fixedly connected with an internal thread sleeve 21, the outer side wall of the installation pipe 3 is provided with an external thread matched with the internal thread sleeve 21 in a threaded manner, and the installation pipe 3 is connected with the installation through hole 2 in a threaded manner. One end of the installation pipe 3 is positioned in the middle transition mixing header 1, and the other end penetrates out of the middle transition mixing header 1. Every installation pipe 3 is located the outer pipe shaft cover of mixed collection case 1 of middle transition and is equipped with connecting sleeve 4 outward, and connecting sleeve 4 is close to the solid fixed ring 41 of the end fixedly connected with of the mixed collection case 1 of middle transition, is connected with on the solid fixed ring 41 to be used for being connected to the fastening components 42 on the mixed collection case 1 of middle transition with connecting sleeve 4. Each fastening assembly 42 comprises three fastening bolts 421, the fastening bolts 421 passing through the fixing ring 41 and being screwed to the outer side wall of the intermediate transition mixing header 1.

Referring to fig. 2 and 3, the end of each connecting sleeve 4 remote from the intermediate transition mixing header 1 is fixedly connected with a first docking collar 5. Wear to be equipped with transition pipe 6 in the connecting sleeve 4, the tip that transition pipe 6 is located connecting sleeve 4 docks with the tip of installation pipe 3, and the other end that connecting sleeve 4 was kept away from to transition pipe 6 communicates to the water wall pipe that corresponds, and fixed cover is equipped with the second butt joint lantern ring 61 with the laminating of first butt joint lantern ring 5 on the pipe shaft of transition pipe 6.

Referring to fig. 2 and 3, the side of the first butting collar 5 away from the second butting collar 61 is fixedly connected with a plurality of pairs of hinge plates 51 perpendicular to the first butting collar 5, two hinge plates 51 of the same pair are parallel to each other and are sequentially distributed along the circumferential direction of the mounting pipe 3, a connecting screw 52 is hinged between each pair of hinge plates 51, mounting grooves 53 for the connecting screw 52 to pass through are formed on the first butting collar 5 and the second butting collar 61 which are attached to each other, and a mounting nut 54 is connected with the end of the connecting screw 52 away from the hinge plates 51 in a threaded manner, when the connecting screw 52 is rotated to a position perpendicular to the second docking collar 61 and the end thereof remote from the hinge plate 51 is located on the side of the second docking collar 61 remote from the first docking collar 5, the worker screws the mounting nut 54 tightly against the second docking collar 61, and a secure connection of the transition pipe 6 and the connecting sleeve 4 is achieved.

Referring to fig. 2 and 3, the outer side wall of the transition pipe 6 is fixedly connected with a plurality of guide strips 62 arranged along the length direction thereof, the guide strips 62 are positioned on one side of the second butt-joint collar 61 close to the first butt-joint collar 5, the inner side wall of the connecting sleeve 4 is provided with a guide groove 43 for accommodating the guide strips 62, and the guide strips 62 and the guide groove 43 are in sliding fit. When the transition pipe 6 is packed into to the staff, gib block 62 and guide way 43 mutually support, play the guide effect to improve the stability and the accuracy of packing into in-process transition pipe 6, simultaneously, in the use, gib block 62 and guide way 43 chucking each other have reduced the transition pipe 6 and have taken place the possibility of skew.

Referring to fig. 2 and 3, the mounting tube 3 is connected with an on-off valve 31, a valve rod 311 of the on-off valve 31 penetrates through the side wall of the mounting tube 3, and the valve rod 311 is rotatably connected to the side wall of the mounting tube 3. One end of the valve rod 311 is located inside the mounting tube 3 and fixedly connected with the valve plate 312, and the other end is located outside the mounting tube 3 and fixedly connected with the hand wheel 313. The connecting sleeve 4 is provided with a through hole for the valve rod 311 and the hand wheel 313 to pass through, and the valve plate 312 can shield the pipeline channel of the mounting pipe 3 or expose the pipeline channel by rotating the hand wheel 313 by workers.

Referring to fig. 2 and 3, the end surface of the installation pipe 3 facing the transition pipe 6 is glued with an elastic sealing layer 32, the elastic sealing layer 32 is made of rubber, and when the transition pipe 6 is installed in the connection sleeve 4, the end part of the transition pipe abuts against the elastic sealing layer 32, so that the sealing performance of the connection part is improved, and the possibility of water leakage is reduced. Connecting sleeve 4 has the elasticity buffer layer 44 that the material is rubber towards the inboard wall cement of installation pipe 3, and elasticity buffer layer 44 pastes tight installation pipe 3, and in the use, after installation pipe 3 thermal expansion, elasticity buffer layer 44 is by extrusion shrink to the influence that installation pipe 3 received the thermal expansion to bring has been reduced.

Referring to fig. 2 and 3, an anti-rust layer 33 is laid on the inner side wall of the installation pipe 3, the anti-rust layer 33 is made of anti-rust paint, and the anti-rust layer 33 can separate water from the pipe wall of the installation pipe 3, so that the possibility that the installation pipe 3 is rusted is reduced.

The implementation principle of the pipeline structure of the water wall of the once-through boiler in the embodiment of the application is as follows: when it is desired to remove the transition tube 6, the transition tube 6 and the adapter sleeve 4 may be separated by a worker unscrewing the mounting nut 54 and rotating the attachment screw 52 out of the mounting slot 53. If need change or overhaul installation pipe 3, the staff unscrews fastening bolt 421 and dismantles connecting sleeve 4 after pulling down transition pipe 6 for installation pipe 3 exposes, and at this moment, rotates installation pipe 3 and can be with its mixed collection case 1 of transition from the middle go up back-spin, convenient operation.

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 pipeline structure of once-through boiler water-cooling wall, includes middle transition mixing header (1), its characterized in that: a plurality of mounting through holes (2) are arranged on the intermediate transition mixing header (1), a mounting pipe (3) passes through the mounting through holes (2), one end of the mounting pipe (3) is positioned in the intermediate transition mixing header (1), the other end of the mounting pipe penetrates out of the intermediate transition mixing header (1), a connecting sleeve (4) is sleeved outside a pipe body of the mounting pipe (3) positioned outside the intermediate transition mixing header (1), one end of the connecting sleeve (4) is connected to the outer side wall of the intermediate transition mixing header (1) through a fastening component (42), the other end of the connecting sleeve is fixedly connected with a first butt-joint lantern ring (5), a transition pipe (6) penetrates through the connecting sleeve (4), the end part of the transition pipe (6) positioned in the connecting sleeve (4) is butt-jointed with the end part of the mounting pipe (3), the other end of the transition pipe (6) far away from the connecting sleeve (4) is communicated with a corresponding water wall cooling pipe, fixedly connected with and the second butt joint lantern ring (61) of first butt joint lantern ring (5) laminating on the pipe shaft of transition pipe (6), the side that the second butt joint lantern ring (61) was kept away from in first butt joint lantern ring (5) articulates has a plurality of connecting screw (52), set up a plurality of mounting groove (53) that supply connecting screw (52) to pass through on the first butt joint lantern ring (5) of laminating each other and second butt joint lantern ring (61), connecting screw (52) are kept away from the tip of hinged end and are rotated to one side and threaded connection that first butt joint lantern ring (5) were kept away from in second butt joint lantern ring (61) and have mounting nut (54), mounting nut (54) support the side that first butt joint lantern ring (5) were kept away from in second butt joint lantern ring (61) tightly.

2. The tube structure of once-through boiler water wall according to claim 1, characterized in that: the fastening assembly (42) comprises a plurality of fastening bolts (421), the end part of the connecting sleeve (4) close to the middle transition mixing header (1) is fixedly connected with a fixing ring (41), and the fastening bolts (421) penetrate through the fixing ring (41) and are in threaded connection with the outer side wall of the middle transition mixing header (1).

3. The tube structure of once-through boiler water wall according to claim 1, characterized in that: the inside wall fixed connection of installation through-hole (2) has internal thread sleeve (21), and the external screw thread with internal thread sleeve (21) screw-thread fit has been seted up to the lateral wall of installation pipe (3).

4. The tube structure of once-through boiler water wall according to claim 1, characterized in that: an elastic buffer layer (44) is paved on the inner side wall of the connecting sleeve (4).

5. The tube structure of once-through boiler water wall according to claim 1, characterized in that: an elastic sealing layer (32) is laid on the end part of the installation pipe (3) facing the transition pipe (6).

6. The tube structure of once-through boiler water wall according to claim 1, characterized in that: the lateral wall of transition pipe (6) is provided with guide bar (62) along its length direction distribution, and guide way (43) that are used for holding guide bar (62) are offered to the inside wall of connecting sleeve (4), and guide bar (62) and guide way (43) cooperation of sliding.

7. The tube structure of once-through boiler water wall according to claim 1, characterized in that: the mounting pipe (3) is connected with an opening and closing valve (31), and the connecting sleeve (4) is provided with an opening for the opening and closing valve (31) to pass through.

8. The tube structure of once-through boiler water wall according to claim 1, characterized in that: an anti-rust layer (33) is laid on the inner side wall of the installation pipe (3).