CN216644176U

CN216644176U - Embedded integrated premixed low-nitrogen combustion steam generator

Info

Publication number: CN216644176U
Application number: CN202220155412.2U
Authority: CN
Inventors: 王永亮; 李鲁信
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-05-31
Anticipated expiration: 2032-01-20

Abstract

Embedded integrative premixing low nitrogen combustion steam generator, including the steam chamber that is located upper portion, be connected with many heat exchange tubes that are array distribution on the steam chamber bottom surface, the lower extreme of heat exchange tube is connected on the header tank, seal all around of heat exchange tube and form the oven, front end at the oven is connected with premixing air chamber, premixing air chamber's front end has premixing fan interface, inherent a row of heat exchange tube department fixed mounting of foremost in premixing air chamber has the gas board, a plurality of gas pockets have been seted up on the gas board, the export of connecting the condenser is seted up to the rear end at the oven, be connected with the condenser on the export, the perisporium of condenser is the intermediate layer, be connected with many heat transfer water pipes between two relative intermediate layer walls of condenser, install the level gauge on steam generator, the level gauge is connected to the controller, the water pump is connected to controller control. The steam generator is beneficial to standardized production and manufacturing.

Description

Embedded integrated premixed low-nitrogen combustion steam generator

Technical Field

The utility model relates to a gas type steam generator, in particular to an embedded integrated premixed low-nitrogen combustion steam generator, and belongs to the technical field of heat exchangers.

Background

The premixing type low-nitrogen combustion boiler is a high-efficiency environment-friendly heat exchange device, adopts a premixing fan and controls the combustion temperature to realize low nitrogen, has already been widely applied, a plurality of steam generators also adopt premixing low-nitrogen combustion at present, and the following needs to be optimized on the steam generator with premixing low-nitrogen combustion at present: firstly, a longer combustion chamber is generally configured, which causes the length and volume of the equipment to be larger; the installation space in many application occasions is limited, and the equipment is required to be as compact as possible and convenient to install; secondly, the heat exchange tubes are of multiple types and have multiple interfaces, so that the production process of the product has multiple element parameters and large welding workload, and the standardized and efficient production and assembly are not facilitated.

Disclosure of Invention

The utility model aims to overcome the problems of the conventional premixing low-nitrogen combustion steam generator and provides an embedded integrated premixing low-nitrogen combustion steam generator.

In order to realize the purpose of the utility model, the following technical scheme is adopted: an embedded integrated premixing low-nitrogen combustion steam generator comprises a steam chamber positioned at the upper part, wherein the steam chamber is provided with a steam outlet, a pressure gauge and a safety valve interface, a water diversion pore plate is fixedly connected in the steam chamber, the bottom surface of the steam chamber is connected with a plurality of heat exchange tubes distributed in an array manner, the lower ends of the heat exchange tubes are connected to a water collecting tank, the periphery of each heat exchange tube is sealed to form an oven wall, the oven wall is fixedly connected with the steam chamber and the water collecting tank in a sealing manner, the front end of the oven wall is connected with a premixing air chamber, the front end of the premixing air chamber is provided with a premixing fan interface, an air plate is fixedly installed at the position of a row of heat exchange tubes at the foremost end in the premixing air chamber, a plurality of air holes are formed in the air plate, the premixing air chamber is not communicated with the space at the rear part except the air holes, the rear end of the oven wall is provided with an outlet connected with a condenser, the outlet is connected with the condenser, and the peripheral wall of the condenser is an interlayer, be connected with many heat transfer water pipes between two relative intermediate layer walls of condenser, the heat transfer water pipe communicates with each other with the intermediate layer, the condenser in the past be high temperature section, the low temperature section respectively to the back, separate through the baffle between high temperature section and the low temperature section in the intermediate layer, the baffle lower part has the discharge orifice that communicates high temperature section and low temperature section, low temperature section upper portion has the water inlet, high temperature section upper portion has the delivery port, the delivery port is connected to the water pump, the play water of the water supply connection water pump of header tank, be connected with the settling pipe between steam chamber and header tank outside the oven, install the level gauge on steam generator, the level gauge is connected to the controller, the water pump is connected to controller control.

Further, the method comprises the following steps of; the steam chamber and the water collecting tank are both arc-shaped.

Further, the method comprises the following steps of; the air hole is a horn-shaped hole with a large front part and a small back part, the diameter of the large end is 3-5mm, and the diameter of the small end is 1-2 mm.

Further, the method comprises the following steps of; the air plate is fixedly connected with a plurality of groove-shaped pieces, a gap is formed between every two adjacent groove-shaped pieces, the air hole is positioned in the gap, the air hole is opposite to the heat exchange tubes at the air outlet side, the air plates at the two sides of the air hole are fixedly connected with isolated guide plates distributed in a V shape, and the isolated guide plates are positioned between every two adjacent heat exchange tubes.

The utility model has the positive and beneficial technical effects that: this steam generator will burn and the heat transfer is integrated as an organic whole, through the steerable burning temperature of medium in the heat-exchange tube, the premixing air chamber of front end for combustor size greatly reduced, can satisfy and install in less place, curved steam dome, header tank are easily made, the connection simple process between heat exchange tube and header tank, the steam dome, the pipe fitting specification is few, is favorable to standardized production manufacturing, premixing air chamber can make the admission even, prevents the tempering.

Drawings

FIG. 1 is a schematic of the present invention.

Fig. 2 is a schematic view of the inside after one side is opened.

FIG. 3 is a schematic view of a heat exchange tube cut at the gas panel.

Fig. 4 is a schematic view on a gas panel.

FIG. 5 is a schematic view of a knock out hole in a steam chamber.

Detailed Description

In order to more fully explain the implementation of the present invention, examples of the implementation of the present invention are provided. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The utility model is explained in further detail in connection with the accompanying drawings, in which: 1: a steam chamber; 2: the upper connecting pipe of the liquid level meter; 3: a pressure gauge and a safety valve interface; 4: a steam outlet; 5: a furnace wall; 6: a premix gas chamber; 7: a premixing fan interface; 8: a water collection tank; 9: a condenser; 10: a water inlet; 11: a water outlet; 12: a heat exchange pipe; 13: a heat exchange water pipe; 14: a high temperature section; 15: a low temperature section; 16: a partition plate; 17: an air plate; 18: a channel member; 19: an isolated deflector plate; 20: air holes; 21: a settling tube; 22: a water diversion pore plate; 23: a flow channel; 24: a lower connecting pipe of the liquid level meter; 25: a smoke outlet.

As shown in the attached drawing, the embedded integrated premixing low-nitrogen combustion steam generator comprises a steam chamber 1 positioned at the upper part, wherein a steam outlet 4, a pressure gauge and a safety valve interface 3 are arranged on the steam chamber.

The steam chamber is also fixedly connected with a water diversion pore plate 22 which is fixedly connected with the inner wall of the steam chamber at the periphery, the bottom surface of the steam chamber is connected with a plurality of heat exchange tubes 12 which are distributed in an array manner, the heat exchange tubes are finned tubes, the lower ends of the heat exchange tubes are connected to a water collection tank 8, the periphery of the heat exchange tubes is sealed to form an oven wall 5, the oven wall is fixedly connected with the steam chamber and the water collection tank in a sealing manner, and in the embodiment, the steam chamber and the water collection tank are both arc-shaped. The furnace wall is characterized in that a premixing air chamber 6 is connected to the front end of the furnace wall, a premixing fan connector 7 is arranged at the front end of the premixing air chamber, an air plate 17 is fixedly mounted at the foremost row of heat exchange tubes in the premixing air chamber, and a plurality of air holes 20 are formed in the air plate. In this embodiment, a plurality of channel-shaped pieces 18 are fixedly connected to the air plate, a gap is formed between every two adjacent channel-shaped pieces, the air hole 20 is located in the gap, and the air hole is right opposite to the heat exchange tube at the air outlet side. The premixing air chamber is not communicated with the space at the rear part except the air holes, and the air plate is a combustion chamber backwards.

The rear end of the furnace wall is provided with an outlet connected with a condenser, the outlet is connected with a condenser 9, the peripheral wall of the condenser is an interlayer, a plurality of heat exchange water pipes 13 are connected between two opposite interlayer walls of the condenser, the heat exchange water pipes are communicated with the interlayer, the condenser is respectively provided with a high-temperature section 14 and a low-temperature section 15 from front to back, the high-temperature section and the low-temperature section in the interlayer are separated by a partition plate 16, the lower part of the partition plate is provided with a flow channel 23 communicated with the high-temperature section and the low-temperature section, the upper part of the low-temperature section is provided with a water inlet 10, the upper part of the high-temperature section is provided with a water outlet 11, the water outlet is connected with a water pump, the water inlet of the water collecting tank is connected with the water outlet of the water pump, a settling pipe 21 is connected between a steam chamber outside the furnace wall and the water collecting tank, a liquid level meter is installed on the steam generator and connected with a controller, and the water pump is connected with the controller for control. The condenser is also provided with an overflow port and an overflow port water outlet. In fig. 2, an upper connecting pipe of the liquid level meter is shown, and a lower connecting pipe of the liquid level meter is shown at 24, and the liquid level meter is a conventional configuration on the existing steam generator and is installed in a manner known in the prior art.

The pressure gauge, the safety valve, the premixing fan and the water pump are all commercially available and are not shown in the figure.

This steam generator during operation, water gets into from the low temperature section of condenser, it gets into the high temperature section to preheat at the low temperature section, the high temperature section is squeezed into the header tank through the water pump, the water that has the uniform temperature gets into and keeps at the liquid level height of settlement in the fin heat-exchange tube, the premixing fan sends mixed gas and air into the premixing air chamber, get into the combustion in the enclosure space that the oven formed behind the gas panel rear through the gas pocket, through heating the water in the heat-exchange tube and make its rapid vaporization get into the steam chamber, absorb a large amount of heats in the water vaporization in the heat-exchange tube and make the temperature of burning obtain guaranteeing, export through the steam outlet after the water diversion board, water falls into the header tank from the settling tube, flue gas after the burning gets into in the condenser and heats the water in the heat-exchange tube, the intraformational water heats, flue gas through the condenser flows out through the play cigarette mouth 25 of condenser.

After the embodiments of the present invention have been described in detail, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the utility model, and it is intended that all simple modifications, equivalent changes and modifications made to the above embodiments based on the technical spirit of the present invention shall fall within the technical scope of the present invention, and the present invention shall not be limited to the embodiments illustrated in the description.

Claims

1. Embedded low nitrogen combustion steam generator mixes in advance has steam outlet and manometer, relief valve interface including the steam chamber that is located upper portion on the steam chamber, and still fixedly connected with divides orifice plate, its characterized in that in the steam chamber: the bottom surface of the steam chamber is connected with a plurality of heat exchange tubes which are distributed in an array manner, the lower ends of the heat exchange tubes are connected to the water collecting tank, the periphery of the heat exchange tubes is sealed to form a furnace wall, the steam chamber and the water collecting tank are fixedly connected in a sealing manner, the front end of the furnace wall is connected with a premixing air chamber, the front end of the premixing air chamber is provided with a premixing fan interface, an air plate is fixedly arranged at the frontmost heat exchange tube in the premixing air chamber, a plurality of air holes are formed in the air plate, the premixing air chamber is not communicated with the space at the rear part except the air holes, the rear end of the furnace wall is provided with an outlet connected with a condenser, the outlet is connected with a condenser, the peripheral wall of the condenser is an interlayer, a plurality of heat exchange water tubes are connected between two opposite interlayer walls of the condenser, the heat exchange water tubes are communicated with the interlayer, the condenser is respectively a high-temperature section and a low-temperature section from front to the rear, and the high-temperature section in the interlayer is separated by a partition plate, the baffle lower part has the discharge orifice of intercommunication high temperature section and low temperature section, and low temperature section upper portion has the water inlet, and high temperature section upper portion has the delivery port, and the delivery port is connected to the water pump, and the play water of water collection tank's water supply connection water pump is connected with the settling leg between steam chamber and water collection tank outside the oven, installs the level gauge on steam generator, and the level gauge is connected to the controller, and the water pump is connected to controller control.

2. The embedded integrated premixed low-nitrogen combustion steam generator according to claim 1, wherein: the steam chamber and the water collecting tank are both arc-shaped.

3. The embedded integrated premixed low-nitrogen combustion steam generator according to claim 1, wherein: the air hole is a horn-shaped hole with a large front part and a small back part, the diameter of the large end is 3-5mm, and the diameter of the small end is 1-2 mm.

4. The embedded integrated premixed low-nitrogen combustion steam generator according to claim 1, wherein: the air plate is fixedly connected with a plurality of groove-shaped pieces, a gap is formed between every two adjacent groove-shaped pieces, the air hole is positioned in the gap, the air hole is opposite to the heat exchange tubes on the air outlet side, the air plates on the two sides of the air hole are fixedly connected with isolation plates distributed in a V shape, and the isolation plates are positioned between every two adjacent heat exchange tubes.