CN214148339U

CN214148339U - Novel gas horizontal internal combustion heating surface adjustable hot water boiler

Info

Publication number: CN214148339U
Application number: CN202120122498.4U
Authority: CN
Inventors: 李树峰; 刘洪义; 姚力强; 敬然; 张晓瑞; 赵浏洋; 李飞; 吴海东; 卓庆增
Original assignee: Changchun University Of Finance And Economics; CHANGCHUN WENJIAO BOILER WORKS
Current assignee: Changchun University Of Finance And Economics; CHANGCHUN WENJIAO BOILER WORKS
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-09-07
Anticipated expiration: 2031-01-18

Abstract

The utility model relates to a novel horizontal internal combustion adjustable heating surface boiler of gas, including furnace, flashback chamber, first return tobacco pipe, preceding smoke box, second return tobacco pipe, back smoke box, with the total flue of back smoke box outlet flue intercommunication, wherein: smoke box outlet, preceding smoke box outlet and total flue intercommunication before installing additional on the preceding smoke box, all install automatically controlled valve on the smoke box outlet in the back smoke box, all install automatically controlled valve on the smoke box outlet in the front, all be provided with the thermocouple on the smoke box in the front, back, thermocouple one end is located inside the smoke box, the other end stretches out the boiler outside and is connected with the PLC switch board, a flue gas temperature signal for giving the PLC switch board with real-time acquisition, smoke box outlet before by PLC switch board control, the opening or closing of automatically controlled valve on the smoke box outlet in the back. This boiler smoke box in the front and back smoke box install two boiler outlet flue additional, and the operation of more nimble adaptation boiler load avoids producing a large amount of comdenstion water in the boiler heating surface, has reduced boiler life, influences the normal operating of boiler.

Description

Novel gas horizontal internal combustion heating surface adjustable hot water boiler

Technical Field

The utility model belongs to the technical field of the boiler, concretely relates to novel horizontal internal combustion adjustable heating surface boiler of gas.

Background

Along with the continuous deepening of the national environmental protection, more and more users use horizontal internal combustion natural gas-fired hot water boilers as heating equipment in winter. The molecular formula of natural gas is CH₄After combustion, a large amount of H is generated₂O, therefore, the design of the boiler needs to consider that the temperature of the smoke at the outlet of the boiler is higher than 100 ℃, and H in the smoke₂O exists in a gas state, so that the corrosion of the heating surface of the boiler caused by the generation of water can be avoided. Since the operation of the boiler is adversely affected if the flue gas contains a large amount of water. As for the temperature of the flue gas is reduced from more than 100 ℃ of the outlet of the boiler to less than 60 ℃, the temperature-resistant material is required to be additionally arrangedThe energy-saving condenser made of corrosive materials absorbs physical sensible heat of flue gas and latent heat of vaporization of water vapor, further saves energy, and can improve the thermal efficiency by about 7-15%.

The normal flue gas flow of current bedroom internal combustion natural gas hot water boiler is: the hot flue gas generated by the combustion of natural gas in the hearth (i.e. the corrugated furnace pipe → the recombustion chamber → the first return flue pipe → the front flue box → the second return flue pipe → the rear flue box → the boiler smoke outlet → the energy-saving condenser → the flue → the chimney. However, after the boiler is actually put into operation, a large amount of condensed water is often generated in the heated surface of the boiler, which causes adverse effects on the service life and normal operation of the boiler, and the reasons are as follows:

1) the inlet and outlet hot water temperatures of the boiler are designed to be 95/70 ℃, 115/70 ℃ and the like according to the standard, but the inlet and outlet hot water temperatures are basically 65/50 ℃ or even lower for the actual operation of the direct-supply hot water boiler, so that the heat exchange temperature difference between hot flue gas and the hot water in the boiler is larger, the heat exchange quantity Q is increased, and the outlet flue gas temperature of the boiler is further reduced;

2) when a user selects a boiler specification, a boiler with a larger size is often selected, particularly when an enterprise development prospect is considered, the thermal power of the boiler is selected to be larger, and the outlet smoke temperature of the boiler is often very low in actual operation;

3) when a boiler is selected for calculating the heat supply load, the outdoor temperature is generally set to be-25 ℃ or even lower in the Changchun area of Jilin province, and actually the actual heat supply heat load and the calculated heat load are greatly different in a long period of time in the early stage and the later stage of the heating period, so the flue gas temperature at the outlet of the boiler is actually low in the period of time.

Due to the factors, the bedroom internal combustion gas-fired hot water boiler which is actually put into operation often generates a large amount of condensed water in a heating surface of the boiler, so that boiler manufacturers and users are very troublesome, the service life of the boiler is greatly shortened, and the normal operation of the boiler is influenced.

Disclosure of Invention

In view of above-mentioned technical problem and defect, the utility model aims to provide a novel horizontal internal combustion adjustable heating surface boiler of gas, this boiler smoke box and back smoke box install two boiler outlet flue additional in the front, and the operation of more nimble control boiler load makes the boiler in various loads under the equal can better control boiler heat transfer efficiency, avoids producing a large amount of comdenstion water in the boiler heating surface, has reduced boiler life, influences the normal operating of boiler.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

novel horizontal internal combustion adjustable heating surface boiler of gas, including furnace, the chamber of backflowing with furnace intercommunication, with the chamber of backflowing intercommunication and around the first return tobacco pipe that furnace periphery set up, with first return tobacco pipe intercommunication and set up the preceding smoke box at the furnace front end, with preceding smoke box intercommunication and around the second return tobacco pipe that first return tobacco pipe periphery set up, with second return tobacco pipe intercommunication and set up the back smoke box at the furnace rear end, with the back smoke box outlet of back smoke box intercommunication, with the total flue of back smoke box outlet intercommunication, the improvement of doing is: the front smoke box is additionally provided with a smoke outlet of the front smoke box, the smoke outlet of the front smoke box is communicated with the main flue, the smoke outlet of the rear smoke box and the smoke outlet of the front smoke box are both provided with an electric control valve or a blocking plate, and the switching of smoke through a part of return smoke pipes or all return smoke pipes is realized by opening one of the electric control valves or the blocking plates and closing the other electric control valve or the blocking plate; the front smoke box and the rear smoke box are respectively provided with a thermocouple, one end of the thermocouple is positioned in the smoke box, the other end of the thermocouple extends out of the boiler and is electrically connected with the PLC control cabinet, the other end of the thermocouple is used for sending a real-time collected smoke temperature signal to the PLC control cabinet, and the PLC control cabinet controls the opening or closing of electric control valves on the smoke outlet of the front smoke box and the smoke outlet of the rear smoke box, or manually opens or closes the blocking plates on the smoke outlet of the front smoke box and the smoke outlet of the rear smoke box.

As the utility model discloses a preferred, the export and the energy-conserving condenser intercommunication of total flue, the outlet flue and flue or chimney intercommunication of energy-conserving condenser.

As the utility model discloses a preferred, the cladding heat preservation backplate around the boiler, the bottom of boiler is provided with the base.

As the utility model discloses a preferred, still be provided with the teletransmission thermometer on preceding smoke box, the back smoke box, through the temperature of the interior flue gas of teletransmission thermometer direct observation preceding smoke box, back smoke box.

The utility model has the advantages and beneficial effect:

(1) the utility model provides a boiler, through installing two boiler smoke outlets additionally on the front smoke box and the rear smoke box of the boiler, according to the change of outdoor temperature, the switch of the electric valve or the baffle plate of the front smoke box and the rear smoke box of the boiler is controlled by a temperature controller (thermocouple), thereby controlling the load operation of the boiler more flexibly; when the outdoor temperature is high, the heating boiler operates under a small load, the electric valve or the blocking plate of the rear smoke box is closed, and the electric valve or the blocking plate of the front smoke box is opened, so that smoke only passes through the front two return strokes of the boiler, and the smoke speed and the temperature required by the rated working condition of the normal boiler design are met; on the contrary, when the outdoor temperature is low, the heating boiler operates under a large load, the electric valve or the blocking plate of the front smoke box is closed, and the electric valve or the blocking plate of the rear smoke box is opened, so that the smoke passes through the return stroke of the whole boiler design, the smoke speed and the temperature required by the rated working condition of the normal boiler design are met, the load operation of the boiler is flexibly controlled, the boiler can better control the heat transfer efficiency of the boiler under various loads, a large amount of condensate water is prevented from being produced in the heated surface of the boiler, and the service life of the boiler is shortened.

(2) The utility model provides a boiler can directly reform transform on current boiler, can greatly reduced manufacturing cost.

Drawings

FIG. 1 is a schematic view of the overall structure of the boiler of the present invention;

fig. 2 is a control schematic diagram of the PLC control cabinet of the utility model.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1 and 2, the utility model provides a novel horizontal internal combustion adjustable heating surface hot water boiler of gas, including furnace 9, the chamber 10 that recoils with furnace intercommunication, with the chamber intercommunication that recoils and around the first return tobacco pipe 8 that furnace periphery set up, with first return tobacco pipe intercommunication and set up the preceding smoke box 6 at the furnace front end, with preceding smoke box intercommunication and around the second return tobacco pipe 14 that first return tobacco pipe periphery set up, with second return tobacco pipe intercommunication and set up the back smoke box 7 at the furnace rear end, with the back smoke box smoke outlet 5 that the back smoke box communicates, with the total flue 15 that back smoke box smoke outlet 5 communicates, the export of total flue 15 communicates with energy-conserving condenser, the smoke outlet and flue or the chimney of energy-conserving condenser communicate; the front smoke box 6 is additionally provided with a front smoke box smoke outlet 2, the front smoke box smoke outlet 2 is communicated with a main flue 15, the rear smoke box smoke outlet 5 and the front smoke box smoke outlet 2 are both provided with an electric control valve 13 or a blocking plate, and the switching of smoke through partial return smoke pipes or all return smoke pipes is realized by opening one of the electric control valves 13 or the blocking plate and closing the other electric control valve 13 or the blocking plate; the front smoke box 6 and the rear smoke box 7 are respectively provided with a thermocouple 12 and a remote thermometer 4, one end of the thermocouple 12 is positioned inside the smoke box, the other end of the thermocouple extends out of the boiler and is electrically connected with a PLC control cabinet 16, the thermocouple 12 is used for sending a smoke temperature signal acquired in real time to the PLC control cabinet 16, the PLC control cabinet 16 controls the opening or closing of an electric control valve 13 on the smoke outlet 2 of the front smoke box and the smoke outlet 5 of the rear smoke box, or the remote thermometer 4 directly observes the smoke temperatures in the front smoke box and the rear smoke box, and a blocking plate on the smoke outlet of the front smoke box and the blocking plate on the smoke outlet of the rear smoke box are manually opened or closed.

Further, a heat-insulating layer protection plate 3 is coated on the periphery of the boiler, a base 1 is arranged at the bottom of the boiler, and the base 1 is fixedly connected with a furnace body foundation 11.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application.

Claims

1. Novel horizontal internal combustion adjustable heating surface boiler of gas, including furnace, the chamber of backflowing with furnace intercommunication, with the chamber of backflowing intercommunication and around the first return tobacco pipe that furnace periphery set up, with first return tobacco pipe intercommunication and set up the preceding smoke box at the furnace front end, with preceding smoke box intercommunication and around the second return tobacco pipe that first return tobacco pipe periphery set up, with second return tobacco pipe intercommunication and set up the back smoke box at the furnace rear end, with the back smoke box outlet of back smoke box intercommunication, with the total flue of back smoke box outlet intercommunication, its characterized in that: the front smoke box is additionally provided with a smoke outlet of the front smoke box, the smoke outlet of the front smoke box is communicated with the main flue, the smoke outlet of the rear smoke box and the smoke outlet of the front smoke box are both provided with an electric control valve or a blocking plate, and the switching of smoke through a part of return smoke pipes or all return smoke pipes is realized by opening one of the electric control valves or the blocking plates and closing the other electric control valve or the blocking plate; the front smoke box and the rear smoke box are respectively provided with a thermocouple, one end of the thermocouple is positioned in the smoke box, the other end of the thermocouple extends out of the boiler and is electrically connected with the PLC control cabinet, the other end of the thermocouple is used for sending a real-time collected smoke temperature signal to the PLC control cabinet, and the PLC control cabinet controls the opening or closing of electric control valves on the smoke outlet of the front smoke box and the smoke outlet of the rear smoke box, or manually opens or closes the blocking plates on the smoke outlet of the front smoke box and the smoke outlet of the rear smoke box.

2. The novel gas-fired horizontal internal combustion adjustable heating surface hot water boiler according to claim 1, characterized in that: the outlet of the main flue is communicated with an energy-saving condenser, and the smoke outlet of the energy-saving condenser is communicated with a flue or a chimney.

3. The novel gas-fired horizontal internal combustion adjustable heating surface hot water boiler according to claim 1, characterized in that: the periphery of the boiler is coated with a heat-insulating layer guard plate, and the bottom of the boiler is provided with a base.

4. The novel gas-fired horizontal internal combustion adjustable heating surface hot water boiler according to claim 1, characterized in that: and the front smoke box and the rear smoke box are also provided with remote thermometers, and the temperatures of smoke in the front smoke box and the rear smoke box are directly observed through the remote thermometers.