CN215489668U

CN215489668U - Natural gas boiler

Info

Publication number: CN215489668U
Application number: CN202121304056.8U
Authority: CN
Inventors: 郑焕; 高鹏; 吴泓冰
Original assignee: Hangzhou Thermoelectric Group Co ltd
Current assignee: Hangzhou Thermoelectric Group Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-01-11
Anticipated expiration: 2031-06-10

Abstract

The application relates to the field of boiler equipment, in particular to a natural gas boiler, which comprises a plurality of finned tubes, a pair of placing plates for placing the finned tubes and a connecting piece for connecting the finned tubes in series; the connecting piece includes the U-shaped pipe, with the fixed mounting panel of U-shaped pipe, wear to locate the bolt of mounting panel, the fin at mounting panel and fin pipe both ends is worn to locate simultaneously to the bolt, the U-shaped pipe both ends are connected respectively in two adjacent fin pipes. During operation, after the economizer uses longer, revolve the twist bolt, with the mounting panel with place board, fin separation, with the finned tube with place the board separation back, carry out solitary cleaning work to the finned tube, this application has the clean more convenient effect of economizer.

Description

Natural gas boiler

Technical Field

The application relates to the field of boiler equipment, in particular to a natural gas boiler.

Background

The boiler body consists of a steam-water system (boiler) and a combustion system (furnace), wherein the steam-water system consists of an economizer, a steam pocket, a downcomer, a header, a water-cooled wall, a superheater, a reheater and the like, and the main task of the boiler is to effectively absorb heat released by fuel combustion and heat feed water entering the boiler to form superheated steam with certain temperature and pressure. The combustion system of the boiler consists of a hearth, a flue, a burner, an air preheater and the like, and has the main task of enabling fuel to be well combusted in the boiler and releasing heat. In addition, the boiler body also comprises a furnace wall and a framework, wherein the furnace wall is used for forming a closed hearth and a flue, and the framework is used for supporting and suspending a steam drum, a heating surface, the furnace wall and the like.

The economizer is a device which is arranged at the lower part of a flue at the tail part of a boiler and used for recovering the waste heat of discharged smoke, and the economizer is called as the economizer because the economizer absorbs the heat of high-temperature smoke, reduces the smoke discharging temperature of the smoke, saves energy and improves efficiency. The economizer includes that a pair of board, the fin pipe of installing between two boards of placing is placed to the board, places and has seted up a plurality of mounting holes on the board, and the fin pipe welds in the mounting hole, and the welding has the connecting pipe that the series connection of a plurality of fin pipes gets up on the fin pipe.

In view of the above-mentioned related arts, the inventor believes that a lot of dust is accumulated on the finned tubes during the heating process by the flue gas, and when the economizer is integrally disposed, the dust in the middle finned tube is not easy to clean.

SUMMERY OF THE UTILITY MODEL

The application provides a natural gas boiler for conveniently cleaning dust in an economizer.

The application provides a natural gas boiler adopts following technical scheme:

a natural gas boiler, includes a plurality of fin pipes, its characterized in that: the device comprises a pair of placing plates for placing finned tubes and a connecting piece for connecting the finned tubes in series; the connecting piece includes the U-shaped pipe, with the fixed mounting panel of U-shaped pipe, wear to locate the bolt of mounting panel, the fin at mounting panel and fin pipe both ends is worn to locate simultaneously to the bolt, the U-shaped pipe both ends are connected respectively in two adjacent fin pipes.

By adopting the technical scheme, after the economizer is used for a long time, the bolt is screwed, the mounting plate is separated from the placing plate and the fins, and after the finned tube is separated from the placing plate, the finned tube is cleaned independently, so that the integral economizer is more convenient to clean.

Optionally, a plurality of avoidance grooves which are vertically arranged are formed in the side wall, close to the placing plate, of the placing plate, and a sliding groove communicated with the avoidance grooves is formed in the side wall of the upper end of the placing plate; the fins at two ends of the fin tube in the length direction are connected in the sliding grooves in a sliding mode, and the hollow tube is connected in the avoiding groove in a sliding mode.

By adopting the technical scheme, in the process of installing the finned tube and the placing plate, the fins at the two ends of the finned tube in the length direction are embedded in the sliding grooves, the installing plate is connected with the placing plate and the fins through the bolts, the fins slide into the sliding grooves, and pre-connection between the finned tube and the placing plate can be achieved.

Optionally, balls are arranged on end faces of the fin tubes, which are in contact with the side walls of the sliding grooves.

Through adopting above-mentioned technical scheme, if the finned tube lateral wall does not install the ball, be sliding friction between finned tube and the spout lateral wall, after the installation ball, become rolling friction between ball and the spout lateral wall, effectively reduced the harmful frictional force between finned tube and the spout for the fin is more smooth and easy at the in-process of motion.

Optionally, the cooling fin further comprises a cushion block, the cushion block is connected in the sliding groove in a sliding mode, and the cushion block is located between the two adjacent fins.

By adopting the technical scheme, after the fins are heated, due to the reason of expansion with heat and contraction with cold, if the safe distance is not reserved between the two adjacent fins, the fins are easy to interfere after being heated, and the fins are damaged.

Optionally, the device further comprises a connecting plate mounted on the placing plate through bolts, an input pipe penetrating through the connecting plate, and a check valve connected to the input pipe, wherein the input pipe is communicated with the finned pipe.

By adopting the technical scheme, water flow in the economizer enters from the bottom, is discharged from the upper end, and the check valve can prevent water from flowing back.

Optionally, the fixing mechanism further comprises a weight plate mounted on the bottom wall of the placing plate.

Through adopting above-mentioned technical scheme, if do not have the weight plate, when installing the fin pipe together with placing the board, need hold up with two people and place the board or will place the board through other auxiliary assembly and fix, after placing the board bottom and set up the weight plate, place the board and can be in vertical state automatically, just make things convenient for the fin pipe to slide into the spout more.

Optionally, the fixing mechanism further comprises a connecting assembly for locking the distance between the two placing plates.

Through adopting above-mentioned technical scheme, will two through coupling assembling place the distance locking between the board, can make things convenient for the finned tube to slide into to the spout more, when two distances of placing between the board are greater than or are less than the length of finned tube, the finned tube just is difficult for putting into to the spout.

Optionally, the connecting assembly includes a fixed block fixedly connected to the weight plate, a connecting rod located between the two fixed blocks, and a protrusion fixedly connected to the connecting rod; the side wall of the fixed block is provided with an embedding groove, and the protrusion is embedded in the embedding groove.

Through adopting above-mentioned technical scheme, to inlay the piece of establishing and inlay to establishing the groove in, two distances of placing between the board are the length of connecting rod.

Optionally, the embedding groove and the protrusion are in interference fit.

Through adopting above-mentioned technical scheme, if inlay and establish for clearance fit between groove and the arch, two distances of placing between the board have relative movement's possibility.

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

when the economizer is used for a long time, the bolt is screwed, the mounting plate is separated from the placing plate and the fins, and after the finned tube is separated from the placing plate, the finned tube is cleaned independently, so that the economizer is more convenient to clean compared with an integral economizer.

Drawings

FIG. 1 is a schematic view of a portion of an economizer according to an embodiment of the present application.

Fig. 2 is a schematic view of the overall structure of the finned tube.

Fig. 3 is an enlarged view of a portion a in fig. 1.

Fig. 4 is a schematic view of the structure of the connector.

FIG. 5 is a schematic view of the overall structure of the economizer according to the embodiment of the present application.

Fig. 6 is a schematic view of the overall structure of the economizer from another angle.

Description of reference numerals: 1. placing the plate; 11. a chute; 12. an avoidance groove; 13. mounting holes; 2. a finned tube; 21. a fin; 22. a hollow tube; 23. a ball bearing; 3. cushion blocks; 4. a U-shaped tube; 5. mounting a plate; 6. a fixing mechanism; 61. a weight plate; 62. a connecting assembly; 621. a fixed block; 6211. embedding a groove; 622. a connecting rod; 6221. a protrusion; 7. a connecting plate; 8. an output pipe; 9. an input tube; 10. a check valve.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a natural gas boiler. Referring to fig. 1, a natural gas boiler comprises a steam system (boiler) and a combustion system (furnace), wherein the combustion system (furnace) comprises an economizer, the economizer comprises a plurality of fin tubes 2, a pair of placing plates 1 for placing the fin tubes 2, a connecting piece for connecting the plurality of fin tubes 2 in series, and a fixing mechanism 6 for fixing the placing plates 1.

Referring to fig. 1, place board 1 and be the setting of cuboid form, place the lateral wall that board 1 is close to mutually and seted up and dodge groove 12, place board 1 upper end and seted up and communicate in dodging the spout 11 of groove 12, place board 1 lateral wall and seted up a plurality of intercommunication spouts 11 and dodge mounting hole 13 of groove 12, mounting hole 13 equidistant distribution is on the vertical direction of placing board 1.

Referring to fig. 1, the fixing mechanism 6 includes a weight plate 61 fixedly installed at the bottom of the placing plate 1, and two connecting assemblies 62 connected between the two placing plates 1, the two connecting assemblies 62 are located at two sides of the placing plate 1, the weight plate 61 is rectangular, the length of the weight plate 61 is longer than the width of the placing plate 1, and the weight plate 61 is made of lead material.

Referring to fig. 1, the connection assembly 62 includes two fixing blocks 621 welded to the upper ends of the two weight plates 61, the upper end of each fixing block 621 is provided with an embedding groove 6211, the cross section of each embedding groove 6211 is rectangular, the connection assembly 62 further includes a protrusion 6221 embedded in the embedding groove 6211 and a connection rod 622 connected between the two protrusions 6221, the protrusion 6221 is arranged in a long rectangular shape, the protrusion 6221 is embedded in the embedding groove 6211, the protrusion 6221 is made of an elastic material, and the protrusion 6221 and the embedding groove 6211 are in interference fit.

Referring to fig. 1 and 2, the fin tube 2 includes a hollow tube 22 and a plurality of fins 21 fixedly connected to the outer wall of the hollow tube 22, the two adjacent fins 21 are arranged at equal intervals, the side wall of the fin 21 facing away from each other is provided with an embedding hole, a ball 23 is rotatably connected in the embedding hole, and the ball 23 abuts against the side wall of the sliding groove 11 close to the sliding groove.

Referring to fig. 1 and 3, the sliding groove 11 is slidably connected to the cushion block 3, the cushion block 3 is disposed in a rectangular shape, and the cushion block 3 is located between two adjacent fins 21.

Referring to fig. 4 and 5, the connecting piece comprises a U-shaped tube 4 and a mounting plate 5 for fixing the U-shaped tube 4, a bolt penetrates through the mounting plate 5, the bolt is simultaneously screwed on the placing plate 1 and the fins 21, the U-shaped tube 4 penetrates through the mounting hole 13, and the U-shaped tube 4 is connected between two adjacent fin tubes 2.

Referring to fig. 5, the water-saving device further comprises an output pipe 8 and an input pipe 9 for water inflow, a connecting plate 7 for fixing the output pipe 8 and the input pipe 9, and a check valve 10 communicated with the water inflow end of the water inlet pipe, wherein bolts penetrate through the connecting plate 7, and penetrate through the placing plate 1 and the fins 21. The input pipe 9 is located at the lower end of the placing plate 1, and the output pipe 8 is located at the upper end of the placing plate 1.

Referring to fig. 5, 6, the water moves in the direction of the hollow arrow.

The implementation principle of the natural gas boiler in the embodiment of the application is as follows:

firstly, the weight plate 61 is placed on the ground, and the placing plate 1 is in a vertical state due to the fact that the gravity of the weight plate 61 is large.

Secondly, the bulges 6221 at the two ends of the connecting rod 622 are embedded into the embedding grooves 6211, and the distance between the two placing plates 1 is a fixed value.

Thirdly, an operator holds the finned tubes 2, the fins 21 at two ends of the finned tubes 2 in the length direction slide into the sliding grooves 11, the balls 23 abut against the side walls, close to the sliding grooves 11, of the sliding grooves 11, the finned tubes 2 and the gaskets are alternately placed into the sliding grooves 11, and a gap is reserved between every two adjacent finned tubes 2.

Fourthly, the U-shaped tube 4 is arranged between the two adjacent fin tubes 2 in a penetrating mode, and the placing plate 1 and the fins 21 are fixed through bolts.

And fifthly, water enters from the input pipe 9 and is discharged from the output pipe 8 through the fin pipe 2 and the U-shaped pipe 4. The flue gas enters from the upper end and passes through the finned tubes 2 one by one to heat the water in the finned tubes 2.

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. A natural gas boiler comprising a plurality of finned tubes (2), characterized in that: the device comprises a pair of placing plates (1) for placing finned tubes (2) and a connecting piece for connecting the finned tubes (2) in series; the connecting piece includes U-shaped pipe (4), with mounting panel (5) that U-shaped pipe (4) are fixed, wear to locate the bolt of mounting panel (5), fin (21) at mounting panel (5) and fin pipe (2) both ends are worn to locate simultaneously to the bolt, U-shaped pipe (4) both ends are connected respectively in two adjacent fin pipes (2).

2. A natural gas boiler according to claim 1, characterized in that: a plurality of avoidance grooves (12) which are vertically arranged are formed in the side wall, close to the placing plate (1), of the placing plate, and a sliding groove (11) communicated with the avoidance grooves (12) is formed in the side wall of the upper end of the placing plate (1); the fins (21) at two ends of the fin tube (2) in the length direction are connected in the sliding groove (11) in a sliding manner, and the hollow tube (22) is connected in the avoidance groove (12) in a sliding manner.

3. A natural gas boiler according to claim 2, characterized in that: and balls (23) are arranged on the end surfaces of the fin tubes (2) contacting with the side walls of the sliding grooves (11).

4. A natural gas boiler according to claim 2, characterized in that: the fin structure is characterized by further comprising a cushion block (3), wherein the cushion block (3) is connected in the sliding groove (11) in a sliding mode, and the cushion block (3) is located between the two adjacent fins (21).

5. A natural gas boiler according to claim 1, characterized in that: the novel solar water heater is characterized by further comprising a connecting plate (7) arranged on the placing plate (1) through bolts, an input pipe (9) penetrating through the connecting plate (7), and a check valve (10) connected to the input pipe (9), wherein the input pipe (9) is communicated with the finned tube (2).

6. A natural gas boiler according to claim 1, characterized in that: the fixing mechanism (6) is further included, and the fixing mechanism (6) comprises a balance weight plate (61) installed on the bottom wall of the placing plate (1).

7. A natural gas boiler according to claim 1, characterized in that: the fixing mechanism (6) further comprises a connecting component (62) for locking the distance between the two placing plates (1).

8. A natural gas boiler according to claim 7, wherein: the connecting assembly (62) comprises fixing blocks (621) fixedly connected to the counterweight plate (61), a connecting rod (622) positioned between the two fixing blocks (621), and a bulge (6221) fixedly connected to the connecting rod (622); the side wall of the fixing block (621) is provided with an embedding groove (6211), and the protrusion (6221) is embedded in the embedding groove (6211).

9. A natural gas boiler according to claim 8, wherein: the embedding groove (6211) and the bulge (6221) are in interference fit.