CN215723183U

CN215723183U - Methanol preheating deep combustion boiler

Info

Publication number: CN215723183U
Application number: CN202120530570.7U
Authority: CN
Inventors: 吕仕铭
Original assignee: Suzhou Lianzhen Machinery Technology Co ltd
Current assignee: Suzhou Lianzhen Machinery Technology Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2022-02-01
Anticipated expiration: 2031-03-15

Abstract

The utility model discloses a methanol preheating deep combustion boiler, which is characterized in that: the end cover, the air duct ring sleeve and the hearth form an air supply flow channel; air enters the air supply flow channel through the air inlet pipe, is preheated by the hearth and is sent into the hearth through the air supply pipe. The choke plug, the methanol ring sleeve and the hearth form a methanol flow channel; methanol enters a methanol flow channel through a methanol inlet pipe, a hearth is preheated and then is divided into 4 streams of fluid through the methanol pipe and a flow divider to enter a methanol hose, then the fluid is sprayed out through a corresponding nozzle, a layer of electric heating wire is wound outside the methanol pipe, and before a boiler is started, the electric heating wire works for a period of time and then is closed. The solenoid valves are arranged on the 2 methanol hoses, and the on-off of the solenoid valves can be changed according to the temperature of the steam outlet. The utility model discloses an improved boiler heat utilization rate, reduced the energy consumption, guaranteed the boiler quick start, the burning is abundant, can also change methyl alcohol through the solenoid valve break-make and spout the flow in order to reach the transport steam demand.

Description

Methanol preheating deep combustion boiler

Technical Field

The utility model belongs to the technical field of boilers, and particularly relates to a methanol preheating deep combustion boiler.

Background

The boiler is an energy conversion device, which transfers the energy, electric energy or industrial waste heat generated by fuel combustion to a medium (usually water) to reach a certain temperature or a certain pressure, so as to obtain energy in the forms of heat energy, mechanical energy or electric energy, and is widely applied to various industries. In the prior art, when a boiler using methanol as fuel works, methanol is directly sprayed into the boiler for combustion, the combustion is insufficient, the heat utilization rate is low, the content of methanol in the discharged flue gas is high, the environment is polluted, and energy is wasted. In addition, if the boiler supply air temperature is too low, boiler startup and combustion are not utilized.

The boiler control system occupies an important position in the boiler, generally, the boiler is started manually when a burner executes combustion, the control system is started simultaneously, at the moment, fuel which is not preheated and air are fed into a spray head at an initial temperature and are not easy to ignite, and therefore the boiler starting is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a methanol preheating deep combustion boiler for solving the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: a methanol preheating deep combustion boiler comprises a hearth, an end cover, a chimney, an air inlet pipe, an air duct ring sleeve, an air supply pipe, a methanol inlet pipe, a methanol ring sleeve, a methanol pipe, an electric heating wire, a flow divider, a methanol hose, an electromagnetic valve, a flame detector, an ignition needle, a nozzle, a boiler nozzle, an end socket, a choke plug and a support, wherein the methanol hose comprises a methanol hose I, a methanol hose II, a methanol hose III and a methanol hose IV, and the electromagnetic valve comprises an electromagnetic valve I and an electromagnetic valve III.

The end cover, the air duct ring sleeve and the hearth form an air supply flow channel; the side surface of the air channel ring sleeve is provided with an air inlet hole connected with the air inlet pipe, and the right end of the top of the air channel ring sleeve is provided with an air outlet hole connected with one end of the air supply pipe; the other end of the blast pipe is connected with one end of the boiler spray head, and the other end of the boiler spray head is connected with the seal head; the boiler nozzle is provided with the nozzle, the ignition needle and the flame detector; the seal head is connected with the hearth; the hearth is connected with the choke plug.

The choke plug, the methanol ring sleeve and the hearth form a methanol flow channel; a methanol inlet hole is formed in the side surface of the methanol ring sleeve and is connected with the methanol inlet pipe, a methanol outlet hole is formed in the right end of the top of the methanol ring sleeve and is connected with one end of the methanol pipe, and the other end of the methanol pipe is connected with the inlet of the flow divider; a layer of electric heating wire is wound outside the methanol pipe; the outlet of the flow divider is respectively connected with one end of the methanol hose, and the other end of the methanol hose is respectively connected with the nozzle; the first methanol hose is provided with the first electromagnetic valve, and the third methanol hose is provided with the third electromagnetic valve.

Further, the integral bottom of the boiler is supported by a bracket; the ignition needle adopts double ignition needles for ignition; the nozzles are distributed in a 90-degree circumferential array.

Furthermore, before the boiler is started, the electric heating wire is firstly opened to preheat the methanol in the methanol pipe, the electromagnetic valve is fully opened to burn with high power, and when the flame detector detects that the methanol is burnt properly, the electric heating wire is closed.

Further, the steam temperature measuring device also comprises a temperature measuring module used for detecting the temperature of the steam outlet; also included is a steam outlet setting a first temperature and a second temperature, wherein the first temperature is less than the second temperature.

Furthermore, the on-off of the electromagnetic valve is controlled according to the detected temperature. When the detected temperature is lower than the first temperature, the electromagnetic valve is fully opened; when the detected temperature is higher than the first temperature and lower than the second temperature, only one electromagnetic valve is opened; when the detected temperature is higher than the second temperature, the electromagnetic valve is fully closed.

Compared with the prior art, the utility model has the beneficial effects that:

1. before the boiler is started, the electric heating wire works for a period of time, and plays a preheating role in methanol, so that the methanol is favorably combusted, and meanwhile, a warming function can be played.

2. Air enters the hearth through the air supply pipe after being preheated in the air supply flow passage, and methanol is sprayed out through the nozzle after being preheated in the methanol flow passage and passing through the methanol pipe, the flow divider and the methanol hose, so that the combustion heat value can be deeply utilized, the heat utilization rate of the boiler is improved, the energy consumption is reduced, and meanwhile, the boiler is favorable for quick start.

3. The nozzles are distributed in a 90-degree circumferential array, and the arrangement of the double ignition needles is combined, so that the deep combustion of the methanol can be realized. Meanwhile, the on-off of the electromagnetic valve can be adjusted according to the temperature of the steam outlet, the spraying flow of the methanol is changed, and the requirement for conveying steam is met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

FIG. 3 is a schematic of methanol delivery.

In the figure: 1-hearth; 2-end cap; 3-a chimney; 4-an air inlet pipe; 5-air duct ring sleeve; 6-blast pipe; 7-methanol feeding pipe; 8-methyl alcohol ring sleeve; 9-methanol tube; 10-an electric heating wire; 11-a flow divider; 1201-methanol hose one; 1202-methanol hose two; 1203-methanol hose III; 1204-methanol hose four; 1301-a first electromagnetic valve; 1303-electromagnetic valve III; 14-a flame detector; 15-an ignition needle; 16-a nozzle; 17-boiler sprinkler; 18-end enclosure; 19-choke plug; 20-bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1-3, the methanol preheating deep combustion boiler comprises a hearth 1, an end cover 2, a chimney 3, an air inlet pipe 4, an air duct ring 5, an air supply pipe 6, a methanol inlet pipe 7, a methanol ring 8, a methanol pipe 9, an electric heating wire 10, a flow divider 11, a methanol hose 12, an electromagnetic valve 13, a flame detector 14, an ignition needle 15, a nozzle 16, a boiler nozzle 17, a seal head 18, a choke plug 19 and a bracket 20, wherein the methanol hose 12 comprises a first methanol hose 1201, a second methanol hose 1202, a third methanol hose 1203 and a fourth methanol hose 1204, and the electromagnetic valve 13 comprises a first electromagnetic valve 1301 and a third electromagnetic valve 1303.

The end cover 2, the air duct ring sleeve 5 and the hearth 1 form an air supply flow channel; an air inlet hole is formed in the side face of the air channel ring sleeve 5 and connected with the air inlet pipe 4, and an air outlet hole is formed in the right end of the top of the air channel ring sleeve and connected with one end of the air supply pipe 6; the other end of the blast pipe 6 is connected with one end of the boiler spray nozzle 17, and the other end of the boiler spray nozzle 17 is connected with the seal head 18; the boiler nozzle 17 is provided with the nozzle 16, the ignition needle 15 and the flame detector 14; the end socket 18 is connected with the hearth 1; the hearth 1 is connected with the bulkhead 19. Air enters the hearth 1 through the blast pipe 6 after being preheated in the blast channel, so that the heat utilization rate of the boiler is improved, and the energy consumption is reduced.

The choke plug 19, the methanol ring sleeve 8 and the hearth 1 form a methanol flow channel; a methanol inlet hole is formed in the side surface of the methanol ring sleeve 8 and connected with the methanol inlet pipe 7, a methanol outlet hole is formed in the right end of the top of the methanol ring sleeve and connected with one end of the methanol pipe 9, and the other end of the methanol pipe 9 is connected with an inlet of the flow divider 11; a layer of electric heating wire 10 is wound outside the methanol pipe 9; the outlet of the flow divider 11 is respectively connected with one end of the methanol hose 12, and the other end of the methanol hose 12 is respectively connected with the nozzle 16; the first electromagnetic valve 1301 is arranged on the first methanol hose 1201, and the third electromagnetic valve 1303 is arranged on the third methanol hose 1203. The methanol is preheated in the methanol flow channel, passes through the methanol pipe 9, the flow divider 11 and the methanol hose 12, and is sprayed out through the nozzle 16, so that the combustion heat value can be deeply utilized, the heat utilization rate of the boiler is improved, the energy consumption is reduced, and the boiler can be started quickly.

Specifically, the boiler is supported at the bottom by a support 20; the ignition needle 15 adopts two ignition needles to strike sparks, and the nozzles 16 are distributed in a 90-degree circumferential array, so that the deep combustion of the methanol can be realized.

Specifically, before the boiler is started, the electric heating wire 10 is turned on to preheat the methanol in the methanol pipe 9, the electromagnetic valve 13 is turned on fully to burn with high power, and when the flame detector 14 detects that the methanol is burnt properly, the electric heating wire 10 is turned off. The electric heating wire 10 works first to preheat the methanol, so that the methanol is favorably combusted, and meanwhile, the electric heating wire can also play a warming-up role.

The temperature measuring module is used for detecting the temperature of the steam outlet; also included is a steam outlet setting a first temperature and a second temperature, wherein the first temperature is less than the second temperature.

Specifically, the on/off of the solenoid valve 13 is controlled according to the magnitude of the detected temperature. When the detected temperature is lower than the first temperature, the electromagnetic valve 13 is fully opened; when the detected temperature is higher than the first temperature and lower than the second temperature, only one electromagnetic valve 13 is opened; when the detected temperature is greater than the second temperature, the solenoid valve 13 is fully closed. The spraying flow of the methanol is changed by adjusting the on-off of the electromagnetic valve, and the requirement of conveying steam is met.

In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a methanol preheats degree of depth combustion boiler which characterized in that: the device comprises a hearth (1), an end cover (2), a chimney (3), an air inlet pipe (4), an air duct loop (5), an air supply pipe (6), a methanol inlet pipe (7), a methanol loop (8), a methanol pipe (9), an electric heating wire (10), a flow divider (11), a methanol hose (12), an electromagnetic valve (13), a flame detector (14), an ignition needle (15), a nozzle (16), a boiler spray head (17), a seal head (18), a choke plug (19) and a support (20), wherein the methanol hose (12) comprises a first methanol hose (1201), a second methanol hose (1202), a third methanol hose (1203) and a fourth methanol hose (1204), and the electromagnetic valve (13) comprises a first electromagnetic valve (1301) and a third electromagnetic valve (1303);

the end cover (2), the air duct ring sleeve (5) and the hearth (1) form an air supply flow channel; an air inlet hole is formed in the side face of the air channel ring sleeve (5) and connected with the air inlet pipe (4), and an air outlet hole is formed in the right end of the top of the air channel ring sleeve and connected with one end of the air supply pipe (6); the other end of the blast pipe (6) is connected with one end of the boiler spray head (17), and the other end of the boiler spray head (17) is connected with the seal head (18); the boiler nozzle (17) is provided with the nozzle (16), an ignition needle (15) and a flame detector (14); the seal head (18) is connected with the hearth (1); the hearth (1) is connected with the choke plug (19);

the choke plug (19), the methanol loop sleeve (8) and the hearth (1) form a methanol flow channel; a methanol inlet hole is formed in the side surface of the methanol ring sleeve (8) and connected with the methanol inlet pipe (7), a methanol outlet hole is formed in the right end of the top of the methanol ring sleeve and connected with one end of the methanol pipe (9), and the other end of the methanol pipe (9) is connected with an inlet of the flow divider (11); a layer of electric heating wire (10) is wound outside the methanol pipe (9); the outlet of the flow divider (11) is respectively connected with one end of the methanol hose (12), and the other end of the methanol hose (12) is respectively connected with the nozzle (16); the first electromagnetic valve (1301) is arranged on the first methanol hose (1201), and the third electromagnetic valve (1303) is arranged on the third methanol hose (1203).

2. The methanol preheating deep combustion boiler as claimed in claim 1, wherein: the integral bottom of the boiler is supported by a bracket (20); the ignition needle (15) adopts double ignition needles for ignition; the nozzles (16) are distributed in a 90-degree circumferential array.

3. The methanol preheating deep combustion boiler as claimed in claim 1, wherein: the temperature measuring module is used for detecting the temperature of the steam outlet.