CN213983499U

CN213983499U - Water supply system of gas steam boiler

Info

Publication number: CN213983499U
Application number: CN202022996372.8U
Authority: CN
Inventors: 鲁小勇; 张铭麟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-08-17
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses a gas steam boiler water supply system relates to steam boiler's technical field, thereby to avoid cold water direct injection make bellows and tobacco pipe produce thermal fatigue in the furnace body, to this problem, the utility model provides a technical scheme includes the furnace body, and the furnace body is connected with the water injection pipe, is provided with the bellows in the furnace body, its characterized in that: and a water box positioned below the corrugated pipe is also arranged in the furnace body, the water injection pipe is communicated with the water box, and the water box is provided with a water outlet.

Description

Water supply system of gas steam boiler

Technical Field

The utility model relates to a steam boiler's technical field specifically is a gas steam boiler water supply system.

Background

Referring to fig. 1, the conventional gas steam boiler includes a boiler body 1, a front smoke box 11 and a rear smoke box 12 are respectively disposed at both ends of the boiler body 1, and a corrugated tube 2 and a back combustion chamber 3 are disposed in the boiler body 1. One end of the bellows 2 is connected to the flashback chamber 3, and the other end is connected to the burner 4. The furnace body 1 is also provided with a smoke tube 5 which is divided into a short smoke tube and a long smoke tube, the short smoke tube is connected with the back combustion chamber 3 and the front smoke box 11, and the long smoke tube is connected with the front smoke box 11 and the rear smoke box 12. The flame generated by the burner 4 is burned in the corrugated pipe 2, and then the generated hot air flows from the smoke pipe 5 and the front and rear smoke boxes 12, and the furnace body 1 is also provided with necessary devices such as a water level meter, a pressure gauge, a safety valve and the like. In addition, a water injection pipe 13 is arranged on the furnace body 1, and the water injection pipe 13 is arranged above the smoke pipe 5.

The water supply system of the existing gas steam boiler directly adds water into the boiler body when water is injected, a water injection port is generally positioned above a smoke tube, the temperature of local water is suddenly reduced by adding cold water suddenly, and the cold water sinks in the boiler body and can directly influence the smoke tube or even a corrugated tube. Because of the high temperature of the tube and bellows, localized cooling while other parts remain hot can create stresses within the material. Because the boiler mostly runs for a long time and cannot be stopped under the non-special condition, and because the continuous generation of steam can require frequent water injection into the boiler, the water injection can generate alternating stress on a smoke pipe and a corrugated pipe, the thermal fatigue is generated, and the service life is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gas steam boiler water supply system, it includes the furnace body, and the furnace body is connected with the water injection pipe, is provided with bellows, its characterized in that in the furnace body: and a water box positioned below the corrugated pipe is also arranged in the furnace body, the water injection pipe is communicated with the water box, and the water box is provided with a water outlet.

The utility model discloses a further set up to: the water outlets are arranged on two side walls of the water box in the width direction.

The utility model discloses a further set up to: the water outlets are arranged in an array along the length direction of the water box.

The utility model discloses a further set up to: the water outlet is provided with a flow direction baffle plate to limit water flowing out of the water outlet to be attached to the water box to be discharged.

The utility model discloses a further set up to: a spoiler is arranged in the water box.

The utility model discloses a further set up to: the spoilers are provided with a plurality of and with the delivery port one-to-one.

The utility model has the advantages of:

1. the water box can prevent cold water from directly contacting the corrugated pipe and the smoke pipe, so that the cold water filled into the furnace body is mixed and heated up firstly, the temperature difference is reduced, and the thermal stress generated by the corrugated pipe and the smoke pipe is reduced.

2. The spoiler and the flow direction baffle are arranged, water can be more moderately injected into the furnace body, the heating process of cold water is prolonged, and therefore the thermal fatigue phenomenon is delayed.

Drawings

FIG. 1 is a schematic diagram of a prior art water supply system for a gas steam boiler;

FIG. 2 is a schematic structural diagram of a water supply system of a gas steam boiler according to the present invention;

fig. 3 shows a schematic structural diagram 1 of the middle water box of the present invention;

fig. 4 shows a schematic structural diagram 2 of the middle water box of the present invention;

FIG. 5 shows a partial enlarged view at A in FIG. 4;

fig. 6 shows a cross-sectional view of the middle water box of the present invention.

Reference numerals: 1. a furnace body; 11. a front smoke box; 12. a rear smoke box; 13. a water injection pipe; 2. a bellows; 3. a flashback chamber; 4. a burner; 5. a smoke pipe; 6. a water box; 61. a water outlet hole; 62. a flow direction baffle; 63. a spoiler.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Referring to fig. 2-4, the utility model provides a water supply system for a gas steam boiler, which comprises a boiler body 1 and a burner installed on the boiler body, wherein a corrugated pipe 2 communicated with the burner 4 is arranged inside the boiler body 1. A water box 6 is provided below the corrugated tube 2. A water injection pipe 13 for injecting water into the furnace body 1 is connected with the furnace body 1 from the bottom of the furnace body 1 and is communicated with the water box 6. The two width-direction side walls of the water box 6 are provided with water outlet holes 61, and the water outlet holes 61 are arrayed in a plurality along the length direction of the water box 6.

In order to ensure the safe and stable operation of the steam generation process, a water level sensor and a pressure sensor are also inevitably installed on the furnace body, and the pressure sensor and the water level sensor are electrically connected with a controller; in addition, an electric control valve and an electric control water pump are also inevitably installed on the water injection pipe 13, and the controller controls the electric control valve and the electric control water pump based on signals of the water level sensor and the pressure sensor so as to realize the function of injecting water to the furnace body 1 according to the working condition, and the control of water injection is the content in the prior art and is not repeated herein.

When not injecting water, can heat the water that flows into in the water box 6 simultaneously during the heating in the furnace body 1, when the water injection, the outside cold water of infusing can mix earlier with the hot water that already exists in the water box 6 and discharge, has avoided on the one hand that the cold water of infusing can direct contact bellows 2 and tobacco pipe 5, and on the other hand has also reduced the difference in temperature that produces when water is injected into the furnace body 1. In addition, the water can be dispersed and discharged by the water outlet holes 61, so that the phenomenon that the local temperature is relatively low due to the fact that cold water is concentrated at one position is avoided.

In addition, with reference to fig. 5, a flow-limiting baffle is welded and fixed to the water outlet hole 61 to limit water flowing out from the water outlet hole from being discharged by adhering to the water box 6, so that the water discharged from the water outlet hole 61 can be further limited around the water box 6, and the water with low temperature can be gradually diffused for heat exchange. Referring to fig. 6, a plurality of spoilers 63 are welded inside the water box 6, the spoilers 63 correspond to the water outlets 61 one by one, and the spoilers 63 are used for blocking water injected into the water box 6 to a certain extent, so that cold water is prevented from being directly discharged from the water outlets 61, and the heating process of the cold water is prolonged.

In conclusion, the additional water box 6 can prevent cold water from directly contacting the corrugated pipe 2 and the smoke pipe 5, so that the cold water filled into the furnace body 1 is mixed and heated up first, the temperature difference is reduced, and the thermal stress generated by the corrugated pipe 2 and the smoke pipe 5 is reduced. And the spoiler 63 and the flow direction baffle 62 are matched, so that water can be more slowly injected into the furnace body 1, the heating process of cold water is prolonged, and the thermal fatigue is delayed.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, various features shown in the various embodiments may be combined in any combination as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. The utility model provides a gas steam boiler water supply system, includes furnace body (1), and furnace body (1) is connected with water injection pipe (13), is provided with bellows (2) in furnace body (1), its characterized in that: a water box (6) positioned below the corrugated pipe (2) is further arranged in the furnace body (1), the water injection pipe (13) is communicated with the water box (6), and a water outlet is formed in the water box (6).

2. A gas to steam boiler water supply system according to claim 1, wherein: the water outlets are arranged on two side walls of the water box (6) in the width direction.

3. A gas to steam boiler water supply system according to claim 2, wherein: the water outlets are arranged in an array along the length direction of the water box (6).

4. A gas to steam boiler water supply system according to claim 3, wherein: a flow direction baffle (62) is arranged at the water outlet to limit the water flowing out of the water outlet to be attached to the water box (6) to be discharged.

5. A gas steam boiler water supply system according to claim 4, wherein: a spoiler (63) is arranged in the water box (6).

6. A gas steam boiler water supply system according to claim 5, wherein: the spoilers (63) are arranged in a plurality and correspond to the water outlets one by one.