CN204787259U - Variable flow cartridge type heat carrier heating furnace - Google Patents

Abstract

The utility model discloses a variable flow cartridge type heat carrier heating furnace, including the convection furnace nest of tubes, radiation furnace tube group, furnace body and combustor, the furnace body has the heat preservation casing, furnace and flue gas interface, still including set up the public upper header at furnace body top and all set up under the convection zone of furnace body bottom the collector and the radiant section under the collector, the collector is linked together with the other end that radiation furnace tube organized under the radiant section, when the heat carrier needs the low discharge, the heat carrier at first gets into collector under the convection zone, flow through and collect public upper header behind the convection furnace nest of tubes, the collector gets into the total pipeline of heat supply under compiling the radiant section after the radiation furnace tube that flows through the again group, need when large -traffic when the heat carrier, the heat carrier gets into under the convection zone collector under collector and the radiant section respectively, the convection furnace nest of tubes of flowing through correspondingly respectively again and radiation furnace tube group, then all compile to the public upper header after the entering heat supply and assemble the pipeline. The utility model discloses can make the user rationally select different heat carrier flows according to the difference of heat supply operating mode, unnecessary electrical power loss in the time of can being used for saving the heat carrier low discharge, but also satisfied the big load heat supply requirement of user.

Description

Variable flow cylinder type heat carrier heating furnace

technical field

The utility model relates to a variable flow rate cylindrical heat carrier heating furnace, which belongs to the technical field of heating furnaces.

Background technique

At present, the general-purpose heat carrier heating furnace has a furnace body with a convection section and a radiation section furnace tube or a single structure connected in series or in parallel. This structure requires that the heat carrier flow rate provided by the user must reach a certain minimum flow rate. However, in the actual use process, the actual heat consumption conditions of many users will often change, and sometimes the actual heat consumption cannot reach half of the original design load, so it will In order to save electricity, users often only turn on half of the circulation pump, which will cause the original structure of the heating furnace to coke and damage the furnace tube due to the low flow rate.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide a variable flow tube type heat carrier heating furnace, which can enable users to reasonably select different heat carrier flow rates according to different heating conditions, and can It is used to save unnecessary power loss when the heat carrier has a small flow rate, and also meets the user's large-load heating requirements.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a variable flow tube type heat carrier heating furnace, which includes a convection furnace tube group, a radiation furnace tube group, a furnace body and a burner, and the furnace body has an insulating shell, The furnace and the flue gas interface, the flue gas interface is arranged on the top outer wall of the furnace body and communicates with the furnace, the burner is arranged at the bottom of the furnace body and its combustion port leads to the furnace, the convection furnace tube group and the radiation furnace The tube groups are all arranged in the insulation shell, and the convection furnace tube group is located on the periphery of the radiation furnace tube group, and also includes a common upper header arranged on the top of the furnace body, and a convection section lower header and a radiation section arranged at the bottom of the furnace body The lower header, the lower header of the convection section is connected with the inlet of the convection furnace tube group, the outlet of the convection furnace tube group is connected with one end of the radiation furnace tube group through the common upper header, and the lower header of the radiant section is connected with the radiation furnace tube group The other end is connected; when the heat carrier needs a small flow rate, the heat carrier first enters the lower header of the convection section, flows through the convection furnace tube group and then gathers to the common upper header, and then flows through the radiant furnace tube group and then gathers to the radiation section The lower header enters the heating main pipeline; when the heat carrier needs a large flow, the heat carrier enters the lower header of the convection section and the lower header of the radiation section respectively, and then flows through the corresponding convection furnace tube group and radiant furnace tube group respectively, Then they are all collected into the common upper header and enter the main heating pipeline.

Further, in order to control the flow direction of the heat carrier in the common upper header, the lower header of the convection section and the lower header of the radiant section so as to realize the flow direction control of the heat carrier in the cylindrical heat carrier heating furnace in series or in parallel, the outlet of the common upper header Gate valves are installed at the inlet of the lower header of the convection section and the inlet of the lower header of the radiant section.

After adopting the above technical scheme, the heat carrier heating furnace with this structure is adopted, so that when the actual heat load is about half of the design load, the user can adopt the series operation mode with small flow rate, and half of the circulating pump can be opened to save energy. It saves unnecessary power loss of the circulating pump when the flow rate is small, and can effectively prevent the coking phenomenon of the furnace tube caused by the small heat carrier flow rate in the convection furnace tube; the heat carrier heating furnace with this structure is also convenient for users to use in actual use. When the heat load is close to the design load, the large flow parallel operation mode can be adopted, which can effectively meet the user's heat consumption requirements and ensure the safe operation of the user's organic heat carrier heating furnace.

Description of drawings

Fig. 1 is a structural schematic diagram of a variable flow rate cylindrical heat carrier heating furnace of the present invention.

Detailed ways

In order to make the content of the utility model easier to understand clearly, the utility model will be further described in detail below according to the specific embodiments and in conjunction with the accompanying drawings.

As shown in Figure 1, a variable flow tube type heat carrier heating furnace includes a convection furnace tube group 5, a radiation furnace tube group 6, a furnace body and a burner 1, and the furnace body has an insulating shell 4 and a furnace 4-1 And the flue gas interface 8, the flue gas interface 8 is arranged on the top outer wall of the furnace body and communicates with the furnace 4-1, the burner 1 is arranged at the bottom of the furnace body and its combustion port leads to the furnace 4-1, the convection furnace The tube group 5 and the radiation furnace tube group 6 are both arranged in the heat preservation shell 4, and the convection furnace tube group 5 is located at the periphery of the radiation furnace tube group 6, and also includes a common upper header 7 arranged on the top of the furnace body and is arranged on the The lower header 3 of the convection section and the lower header 2 of the radiation section at the bottom of the furnace body, the lower header 3 of the convection section communicates with the inlet of the convection furnace tube group 5, and the outlet of the convection furnace tube group 5 is connected to the radiation section through the common upper header 7. One end of the furnace tube group 6 is connected, and the lower header 2 of the radiation section is connected with the other end of the radiation furnace tube group 6; when the heat carrier needs a small flow rate, the heat carrier first enters the lower header 3 of the convection section and flows through the convection furnace The tube groups 5 are then collected into the common upper header 7, and then flow through the radiant furnace tube group 6 and then converge to the lower header 2 of the radiant section to enter the main heating pipeline; when the heat carrier requires a large flow rate, the heat carrier enters the lower convection section respectively The header 3 and the lower header 2 of the radiant section flow through the corresponding convection furnace tube group 5 and the radiant furnace tube group 6 respectively, and then they all converge to the common upper header 7 and then enter the main heating pipeline. The inner side of the radiation furnace tube group 6 is a radiation chamber 9, and the convection chamber is between the radiation furnace tube group 6 and the heat preservation shell 4, and the convection furnace tube group 5 is located in the convection chamber.

In order to control the flow direction of the heat carrier in the common upper header 7, the lower header 3 of the convection section and the lower header 2 of the radiant section so as to realize the process control of the series or parallel connection of the heat carrier in the cylindrical heat carrier heating furnace, the outlet of the upper header 7 is shared Gate valves are installed at the inlet of the lower header 3 of the convection section and the inlet of the lower header 2 of the radiation section.

The working principle of the utility model is as follows:

After coal and other fuels are burned by the burner 1, the high-temperature flue gas produced passes through the radiation chamber 9 for radiation heat exchange and then enters the convection chambers inside and outside the convection furnace tube group 5 that are connected in sequence, and passes through the flue gas interface after radiation and convection heat exchange. 8 discharge the furnace body.

When the user operates with small load and small flow heat carrier: the heat carrier enters from the lower header 3 of the convection section, flows through the convection furnace tube group 5 to reach the common upper header 7 of the radiation section and the convection section, and then enters the radiant furnace tube group After 6, it enters the lower header 2 of the radiant section, and then enters the system heating pipeline through the external connecting pipeline.

When the user operates with a large load and a large flow of heat carrier: the heat carrier enters the lower header 2 of the radiation section and the lower header 3 of the convection section at the same time, flows through the radiation furnace tube group 6 and the convection furnace tube group 5 respectively, and collects them respectively. The common upper header 7 of the radiation section and the convection section enters the heating pipeline of the system through the external connecting pipeline.

The specific embodiments described above have further described the technical problems, technical solutions and beneficial effects solved by the utility model in detail. It should be understood that the above descriptions are only specific embodiments of the utility model and are not intended to be used To limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (2)

1. a changeable flow cartridge type heat medium heater, comprise convection coil group (5), radiating furnace tube group (6), body of heater and burner (1), body of heater has insulation shell (4), burner hearth (4-1) and flue gas interface (8), the top outer wall that flue gas interface (8) is arranged on body of heater is connected with burner hearth (4-1), burner (1) is arranged on the bottom of body of heater and its port leads to burner hearth (4-1), described convection coil group (5) and radiating furnace tube group (6) are all arranged in insulation shell (4), and convection coil group (5) is positioned at the periphery of radiating furnace tube group (6), it is characterized in that: also comprise the public upper header (7) being arranged on body of heater top and the convection section lower collector pipe (3) being all arranged on bottom of furnace body and radiant section lower collector pipe (2), convection section lower collector pipe (3) is connected with the import of convection coil group (5), the outlet of convection coil group (5) is connected by public upper header (7) one end with radiating furnace tube group (6), radiant section lower collector pipe (2) is connected with the other end of radiating furnace tube group (6), when heat carrier needs low discharge, first heat carrier enters convection section lower collector pipe (3), be pooled to public upper header (7) after flowing through convection coil group (5), then be pooled to radiant section lower collector pipe (2) after flowing through radiating furnace tube group (6) and enter heat supply main pipe line, when heat carrier needs large discharge, heat carrier enters convection section lower collector pipe (3) and radiant section lower collector pipe (2) respectively, flow through corresponding convection coil group (5) and radiating furnace tube group (6) more respectively, after being then all collected to public upper header (7), enter heat supply main pipe line.

2. changeable flow cartridge type heat medium heater according to claim 1, is characterized in that: the import department of the exit of described public upper header (7), the import department of convection section lower collector pipe (3) and radiant section lower collector pipe (2) is all provided with gate valve.