CN211178046U - Energy-saving waste heat recovery boiler of heat energy power device - Google Patents

Abstract

The utility model relates to the technical field of heat exchangers, in particular to an energy-saving waste heat recovery boiler of a thermal energy power device. Including a collection pipe, a number of spiral pipes are arranged equidistantly between the collection pipe and the box body of the water tank, and a filter pipe is arranged at the front end of the boiler chamber. In the utility model, a plurality of spiral tubes are regularly arranged in the boiler chamber, the water flows down the spiral tubes, and the spiral tubes are perpendicular to the flow direction of the exhaust gas, which effectively increases the contact area between the water flow and the exhaust gas, prolongs the contact time, and further improves the thermal efficiency. At the same time, a filter tube with a dust bag is set at the front end of the air inlet pipe of the boiler room, and the exhaust gas is filtered and dust treated in advance, so as to prevent a large amount of impurities from entering the boiler and affecting its recovery effect, so that the boiler can Keep it clean and easy to clean up.

Description

An energy-saving waste heat recovery boiler of a thermal power plant

technical field

The utility model relates to the technical field of heat exchangers, in particular to an energy-saving waste heat recovery boiler of a thermal power device.

Background technique

Waste heat boilers refer to those boiler equipment that use the waste heat of high-temperature exhaust gas generated in industrial processes to generate steam or hot water. Since waste heat boilers greatly improve the utilization rate of heat released by fuel combustion, the boilers are very energy-saving.

There are various types and sizes of waste heat recovery boilers in the prior art, but when the existing waste heat recovery boilers are used, the waste gas is generally not pre-filtered, resulting in a large amount of impurities entering the boiler, which not only affects the heat recovery efficiency, but also In addition, a large number of impurities are deposited in the boiler, which is difficult to clean; at the same time, when heat exchange is performed inside the existing waste heat recovery boiler, the contact area between the water flow and the exhaust gas is small and the contact time is short, resulting in poor heating effect and waste heat waste. In view of this, the present application proposes an energy-saving waste heat recovery boiler of a thermal power plant.

Utility model content

The purpose of this utility model is to provide an energy-saving waste heat recovery boiler of a thermal power plant, so as to solve the problems that the existing waste heat recovery boiler has no filtering function and poor heat recovery effect proposed in the above background technology.

The technical scheme adopted by the utility model to solve the above problems is: an energy-saving waste heat recovery boiler of a thermal energy power device, which is characterized in that it includes a boiler chamber, the boiler chamber includes a chamber body, and the top of the chamber body is equidistantly arranged. There are several upper through holes, the bottom end of the silo body is provided with a number of lower through holes equidistantly, the front end of the silo body is provided with an air inlet pipe, and the rear end of the silo body is provided with an air outlet pipe; the boiler The top of the bin is provided with a water tank, the water tank includes a box body, and the bottom end of the box body is provided with a number of water inlet holes at equal distances; a heat exchange component is connected to the warehouse body, and the heat exchange component includes a collection pipe, so the There are several water outlet holes equidistantly arranged on the side wall of the collecting pipe, and a number of helical pipes are equidistantly communicated between the collecting pipe and the box body, one end of the collecting pipe is closed, and the other end of the collecting pipe is There is an electric water valve; the front end of the boiler chamber is provided with a filter tube, the filter tube includes an outer tube body, and a dust collection bag is arranged in the outer tube body.

Preferably, the air inlet pipe is welded and fixed on the front end of the silo body, the front end of the air inlet pipe is provided with a front flange, and the front flange and the air inlet pipe are integrally formed. The air outlet pipe is welded and fixed on the rear end of the silo body.

Preferably, the water tank is welded and fixed on the top surface of the silo body, a water inlet pipe is arranged in the middle of the front end of the box body, a sewage pipe is arranged at the bottom of the rear end of the box body, and the water inlet pipe and the The sewage pipes are all fixedly connected to the box body.

Preferably, the upper through holes, the lower through holes, the water inlet holes and the water outlet holes are equal in number and corresponding in one-to-one positions, and the spiral tube and the water outlet holes are in the same number and position correspond.

Preferably, the diameters of the upper through hole, the lower through hole, the water inlet hole and the water outlet hole are all equal, and the outer diameter of the spiral tube is equal to the diameter of the water outlet hole.

Preferably, the top end of the spiral pipe passes through the upper through hole and the water inlet hole in sequence and then communicates with the water tank, and the inner walls of the upper through hole and the water inlet hole are welded and fixed to the water tank. On the outer side wall of the helical pipe, the bottom end of the helical pipe passes through the lower through hole and the water outlet hole in turn and is connected to the collecting pipe, and the inner side walls of the lower through hole and the water outlet hole are both connected. It is welded and fixed on the outer side wall of the spiral tube.

Preferably, one end of the electric water valve is threadedly connected to the collecting pipe.

Preferably, the rear end of the outer pipe body is provided with a rear flange, the rear flange and the outer pipe body are integrally formed, the outer pipe body is connected with the air inlet pipe flange, and the The dust bag is fixed on the inner side wall of the outer pipe body by screws.

Compared with the prior art, the utility model has the following advantages and effects: the utility model regularly arranges several spiral tubes in the boiler chamber, the water flows down the spiral tubes, and the spiral tubes are perpendicular to the flow direction of the exhaust gas, thereby effectively increasing the The contact area between the water flow and the exhaust gas is increased, and the contact time is prolonged, thereby improving the efficiency of heat exchange and reducing waste heat. It can prevent a large amount of impurities from entering the boiler and affect its recovery effect, so that the boiler can be kept clean and easy to clean.

Description of drawings

1 is a schematic diagram of the overall structure of an energy-saving waste heat recovery boiler of a thermal power plant in an embodiment of the present utility model;

Fig. 2 is the partial half-section structural schematic diagram of the energy-saving waste heat recovery boiler of the power device in the embodiment of the utility model;

Fig. 3 is the half-section structure schematic diagram of the boiler warehouse in the embodiment of the utility model;

Fig. 4 is the half-section structure schematic diagram of the water tank in the embodiment of the present utility model;

5 is a schematic structural diagram of a heat exchange assembly in an embodiment of the present invention;

6 is a schematic structural diagram of a filter tube in an embodiment of the present invention.

In the figure: boiler chamber 1, chamber body 11, upper through hole 111, lower through hole 112, air inlet pipe 12, front flange 121, air outlet pipe 13, water tank 2, box body 21, water inlet hole 211, water inlet pipe 22. Sewage pipe 23, heat exchange assembly 3, collecting pipe 31, water outlet 311, spiral pipe 32, electric water valve 33, filter pipe 4, outer pipe body 41, rear flange 411, dust bag 42.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, with a specific orientation. The orientation configuration and operation are therefore not to be construed as limitations of the present invention.

In addition, in the description of the present invention, "a number of" means at least one, such as one, two, etc., unless otherwise expressly and specifically defined.

Please refer to Figures 1-6, the present utility model provides a technical solution:

An energy-saving waste heat recovery boiler of a thermal power device includes a boiler chamber 1, the boiler chamber 1 includes a chamber body 11, the top of the chamber body 11 is provided with a plurality of upper through holes 111 at equal intervals, and the bottom end of the chamber body 11 is provided with equal distances. There are several lower through holes 112, the front end of the silo body 11 is provided with an air inlet pipe 12, and the rear end of the silo body 11 is provided with an air outlet pipe 13; the top of the boiler chamber 1 is provided with a water tank 2, the water tank 2 includes a box body 21, and the box body The bottom end of 21 is provided with a number of water inlet holes 211 equidistantly; the silo body 11 is connected with a heat exchange assembly 3, and the heat exchange assembly 3 includes a collection pipe 31, and a number of water outlet holes 311 are equidistantly arranged on the side wall of the collection pipe 31, A number of spiral pipes 32 are connected equidistantly between the collecting pipe 31 and the box body 21, one end of the collecting pipe 31 is closed, and the other end of the collecting pipe 31 is provided with an electric water valve 33; The pipe 4 includes an outer pipe body 41, and the outer pipe body 41 is provided with a dust bag 42 therein.

In this embodiment, the air inlet pipe 12 is welded and fixed on the front end of the silo body 11 , the front end of the air inlet pipe 12 is provided with a front flange 121 , and the front flange 121 and the air inlet pipe 12 are integrally formed into an integral structure, and the air outlet pipe 13 It is welded and fixed on the rear end of the silo body 11, so that the overall structure of the boiler silo 1 is strong and stable, and air leakage is avoided.

Further, the water tank 2 is welded and fixed on the top surface of the silo body 11, so that the connection between the water tank 2 and the boiler silo 1 is firm and stable.

Further, a water inlet pipe 22 is arranged in the middle of the front end of the box body 21, and a sewage pipe 23 is arranged at the bottom of the rear end of the box body 21. The tank body 21 is filled with water, and the excess water and impurities such as sediment in the water tank 21 can be discharged through the sewage pipe 23 .

In this embodiment, the upper through holes 111 , the lower through holes 112 , the water inlet holes 211 and the water outlet holes 311 are equal in number and correspond one-to-one.

Further, the diameters of the upper through hole 111, the lower through hole 112, the water inlet hole 211 and the water outlet hole 311 are all equal, and the outer diameter of the spiral tube 32 is equal to the diameter of the water outlet hole 311, so that the spiral tube 32 can be sequentially installed in each through hole. inside the hole.

Specifically, the top end of the spiral tube 32 passes through the upper through hole 111 and the water inlet hole 211 in sequence and then communicates with the water tank 2 , and the inner walls of the upper through hole 111 and the water inlet hole 211 are welded and fixed to the outer wall of the spiral tube 32 , the bottom end of the spiral tube 32 passes through the lower through hole 112 and the water outlet hole 311 in turn and is connected to the collecting tube 31. The inner walls of the lower through hole 112 and the water outlet hole 311 are welded and fixed on the outer wall of the spiral tube 32, so that the The spiral tube 32 is firm and stable, and the joints between the spiral tube 32 and each through hole are tightly sealed to avoid air leakage. As the spiral tube 32 flows into the collecting tube 31, when the water flows through the spiral tube 32 and the exhaust gas passes through the silo body 11, the heat in the exhaust gas exchanges heat with the water flow in the spiral tube 32, so that the water in the spiral tube 32 is heated and warmed up. In addition, the water flow slowly spirals downward along the spiral tube 32, which effectively increases the contact area between the water flow and the exhaust gas, and prolongs the contact time.

In this embodiment, one end of the electric water valve 33 is threadedly connected with the collecting pipe 31, so that the electric water valve 33 is strong and stable, and is not easy to loosen.

Further, the other end of the electric water valve 33 should also be screwed with a water delivery pipe, so that the heated water can be directly transported to the place where it needs to be used. During use, the electric water valve 33 is used to control the flow speed or temperature of the exhaust gas. The water output and drainage speed of the pipe 31 are collected to control the temperature of the hot water.

Specifically, the electric water valve 33 involved in this embodiment can be an electric two-way temperature control valve with a model number of VC6013AJC1000T produced by Fujian Fuxing Lianggong Valve Co., Ltd., and its supporting power supply and other accessories can also be used by this valve. Provided by the manufacturer; in addition, the electric water valve 33 involved in this embodiment is the prior art, and those skilled in the art can completely realize it, so I will not repeat it here, and the content of the protection of the present invention does not involve the electric water valve 33. Improvements in the structure and working principle.

In this embodiment, the rear end of the outer pipe body 41 is provided with a rear flange 411, the rear flange 411 and the outer pipe body 41 are integrally formed into a structure, and the outer pipe body 41 is flanged to the air inlet pipe 12, so that the outer pipe body 41 is firm and stable, and the connection between the outer pipe body 41 and the boiler chamber 1 is smooth and stable.

Further, the dust collecting bag 42 is fixed on the inner side wall of the outer pipe body 41 by screws, so that the dust collecting bag 42 is firm and stable, and is not easy to loosen. It is filtered by the dust bag 42 before entering the bin body 11 to prevent the exhaust gas from carrying too many impurities, which not only affects the efficiency of heat exchange inside the boiler bin 11, but also a large amount of impurities deposited in the bin body 11 and difficult to clean.

When the energy-saving waste heat recovery boiler of the thermal power plant of this embodiment is in use, firstly, the boiler chamber 1 is connected with the exhaust gas outlet of the thermal power plant through the filter pipe 4, and at the same time, an appropriate amount of clean water is poured into the box 21 through the water inlet pipe 22. , when the exhaust gas is discharged, connect the electric water valve 33 to the external power supply to make it work, the exhaust gas enters the silo body 11 after being filtered, the water in the water tank 2 slowly flows into the spiral pipe 32 under the action of gravity, and the water flow and the exhaust gas After the heat is fully exchanged, the hot water is collected into the collecting pipe 31 and gradually discharged, and the exhaust gas is discharged through the air outlet pipe 13 after being cooled by the heat exchange.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Under the premise of the spirit and scope, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. An energy-saving waste heat recovery boiler of a heat energy power device is characterized in that: the boiler comprises a boiler bin (1), wherein the boiler bin (1) comprises a bin body (11), a plurality of upper through holes (111) are formed in the top end of the bin body (11) at equal intervals, a plurality of lower through holes (112) are formed in the bottom end of the bin body (11) at equal intervals, an air inlet pipe (12) is arranged at the front end of the bin body (11), and an air outlet pipe (13) is arranged at the rear end of the bin body (11); the water tank (2) is arranged at the top end of the boiler bin (1), the water tank (2) comprises a tank body (21), and a plurality of water inlet holes (211) are formed in the bottom end of the tank body (21) at equal intervals; a heat exchange component (3) is connected in the bin body (11), the heat exchange component (3) comprises a collecting pipe (31), a plurality of water outlet holes (311) are formed in the side wall of the collecting pipe (31) at equal intervals, a plurality of spiral pipes (32) are communicated between the collecting pipe (31) and the box body (21) at equal intervals, one end of the collecting pipe (31) is closed, and an electric water valve (33) is arranged at the other end of the collecting pipe (31); the front end of the boiler bin (1) is provided with a filter pipe (4), the filter pipe (4) comprises an outer pipe body (41), and a dust bag (42) is arranged in the outer pipe body (41).

2. The energy saving waste heat recovery boiler of the thermal power plant as set forth in claim 1, characterized in that: the air inlet pipe (12) is welded and fixed on the front end of the bin body (11), a front flange (121) is arranged at the front end of the air inlet pipe (12), the front flange (121) and the air inlet pipe (12) are of an integrally formed structure, and the air outlet pipe (13) is welded and fixed on the rear end of the bin body (11).

3. The energy saving waste heat recovery boiler of the thermal power plant as set forth in claim 1, characterized in that: the water tank (2) is welded and fixed on the top surface of the bin body (11), a water inlet pipe (22) is arranged in the middle of the front end of the bin body (21), a sewage discharge pipe (23) is arranged at the bottom of the rear end of the bin body (21), and the water inlet pipe (22) and the sewage discharge pipe (23) are fixedly communicated into the bin body (21).

4. The energy saving waste heat recovery boiler of the thermal power plant as set forth in claim 1, characterized in that: go up through-hole (111), through-hole (112) down, inlet opening (211) and apopore (311) quantity equals and the position one-to-one, spiral pipe (32) with the quantity of apopore (311) equals and the position one-to-one.

5. The energy saving waste heat recovery boiler of the thermal power plant as set forth in claim 1 or 4, characterized in that: the diameters of the upper through hole (111), the lower through hole (112), the water inlet hole (211) and the water outlet hole (311) are equal, and the outer diameter of the spiral pipe (32) is equal to the diameter of the water outlet hole (311).

6. The energy saving waste heat recovery boiler of the thermal power plant as set forth in claim 1, characterized in that: the top of spiral pipe (32) passes in proper order go up through-hole (111) with communicate behind inlet opening (211) in water tank (2), go up through-hole (111) with the equal welded fastening of inside wall of inlet opening (211) is in on the lateral wall of spiral pipe (32), the bottom of spiral pipe (32) passes in proper order through-hole (112) down with communicate behind apopore (311) in manifold (31), through-hole (112) down with the equal welded fastening of inside wall of apopore (311) is in on the lateral wall of spiral pipe (32).

7. The energy saving waste heat recovery boiler of the thermal power plant as set forth in claim 1, characterized in that: one end of the electric water valve (33) is in threaded connection with the collecting pipe (31).

8. The energy saving waste heat recovery boiler of the thermal power plant as set forth in claim 1, characterized in that: the rear end of the outer pipe body (41) is provided with a rear flange (411), the rear flange (411) and the outer pipe body (41) are of an integrally formed structure, the outer pipe body (41) is connected with the air inlet pipe (12) in a flange mode, and the dust collection bag (42) is fixed on the inner side wall of the outer pipe body (41) through screws.

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