A large rectangular heat transfer oil furnace structure

Abstract

The present invention relates to the field of furnace technology, and specifically to a large-scale rectangular heat-conducting oil furnace structure, which can simplify installation operations and ensure the sealing of the furnace, and comprises a bracket and a rectangular coil, the rectangular coil is stacked and welded from bottom to top to form a furnace, each group of rectangular coils is provided with an oil inlet and an oil outlet, the oil inlet of each group of rectangular coils is connected to a corresponding heating surface, the oil outlet of each group of rectangular coils is respectively connected to an independent connecting pipe, and the connecting pipe is connected to a ceiling pipe inlet header, and is characterized in that rectangular connecting plates are respectively welded on the long sides of the topmost layer and the bottommost layer of each group of rectangular coils, the length of the rectangular connecting plates corresponds to the long sides of the rectangular coils, the width of the rectangular connecting plates is greater than the distance from one side of the furnace to the side of the bracket, a notch is provided on the outer side of the end of the rectangular connecting plate, and when adjacent rectangular coils are installed, the two notches form a strip groove, and a sealing strip is welded in the strip groove.

Description

Technical Field

[0001] The invention relates to the technical field of furnace chambers, and in particular to a large-scale rectangular heat-conducting oil furnace chamber structure. Background Art

[0002] Thermal oil boiler refers to a boiler that uses thermal oil for heating. Generally, it uses coal, oil, and gas as fuel, thermal oil as medium, and uses a hot oil circulation pump to force the medium to circulate in liquid phase, and then transfers the heat energy to the heat-using equipment and then returns to the heating furnace for reheating. It has the characteristics of obtaining high working temperature under low pressure and being able to perform high-precision control of the medium operation.

[0003] For vertical furnaces, due to their high height, considering the transportation height and convenience during installation, they can only be combined into a furnace by stacking sections. Moreover, with the continuous increase in the demand for heat users, the trend of thermal oil boilers is to develop on a larger scale. Therefore, the coils have also changed from traditional square coils to rectangular coils. Since the length direction is elongated, when connecting two adjacent groups of rectangular coils, the traditional direct welding operation is more troublesome and requires reaching into the bracket for operation. In addition, it is difficult to ensure the overall sealing, and leakage often occurs. Summary of the invention

[0004] In order to solve the problem that the furnace of the existing thermal oil boiler is difficult to install and the sealing cannot be guaranteed, the present invention provides a rectangular large-scale thermal oil boiler furnace structure, which can simplify the installation operation and ensure the sealing of the furnace.

[0005] The technical solution is as follows: a large-scale rectangular heat-conducting oil furnace structure, which includes a bracket and a rectangular coil, the rectangular coil is stacked and welded from bottom to top to form a furnace, each group of the rectangular coil is provided with an oil inlet and an oil outlet, the oil inlet of each group of the rectangular coil is connected to the corresponding heating surface, the oil outlet of each group of the rectangular coil is respectively connected to an independent connecting pipe, and the connecting pipe is connected to the ceiling pipe inlet header, characterized in that rectangular connecting plates are welded on the long sides of the topmost and bottommost layers of each group of the rectangular coils, the length of the rectangular connecting plates corresponds to the long sides of the rectangular coils, the width of the rectangular connecting plates is greater than the distance from one side of the furnace to the side of the bracket, a notch is provided on the outer side of the end of the rectangular connecting plate, and when adjacent rectangular coils are installed, the two notches form a strip groove, and a sealing strip is welded in the strip groove.

[0006] It is further characterized in that the pipes of the uppermost rectangular coil close to the horizontal turning chamber are arranged in a staggered manner from top to bottom in the horizontal direction, and a smoke gap is left between two adjacent layers of the pipes, and the smoke gap is used for smoke flow between the furnace and the horizontal turning chamber, and a top sealing plate is welded on the top of the uppermost rectangular coil;

[0007] The notch is a slope or a step.

[0008] After adopting the present invention, a rectangular connecting plate is added to the leakage-prone part of the long side of the original rectangular coil, and then a sealing strip is added, and the width of the rectangular connecting plate is greater than the distance from one side of the furnace to the side of the bracket. The welding of the sealing part is outside the bracket for easy operation and convenient for on-site welding. The welding of the sealing strip and the strip groove is better than the direct welding of the original coils, which can better ensure the welding quality and will not cause leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the present invention;

[0010] Figure 2 It is a top view of a rectangular coil;

[0011] Figure 3 Schematic diagram of two types of sealing strip structures;

[0012] Figure 4 This is a schematic diagram of the staggered arrangement of coils. DETAILED DESCRIPTION

[0013] See Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a rectangular large-scale heat-conducting oil furnace structure comprises a bracket 1 and a rectangular coil 2. The rectangular coil 2 is stacked and welded from bottom to top to form a furnace 3. Each group of rectangular coils 2 is provided with an oil inlet and an oil outlet. The oil inlet of each group of rectangular coils 2 is connected to the corresponding heating surface, and the oil outlet of each group of rectangular coils 2 is respectively connected to an independent connecting pipe, and the connecting pipe is connected to the ceiling pipe inlet header. Rectangular connecting plates 4 are welded on the long sides of the top and bottom layers of each group of rectangular coils 2, respectively. The length of the rectangular connecting plates 4 corresponds to the long sides of the rectangular coils 2, and the width of the rectangular connecting plates 4 is greater than the distance from one side of the furnace 3 to the side of the bracket 1, that is, the end of the rectangular connecting plate is located outside the bracket 1, and a notch 5 is opened on the outer side of the end of the rectangular connecting plate 4. When adjacent rectangular coils are installed, the two notches 5 form a strip groove, and a sealing strip 6 is welded in the strip groove. The notch 5 is an inclined surface or a step opening, which can be adjusted as needed. During installation, the rectangular coils 2 are stacked, and the rectangular connecting plates on the long sides of the bottom layer of the upper rectangular coils 2 are in contact with the rectangular connecting plates on the long sides of the top layer of the lower rectangular coils 2. If the contact surface is very flat, the sealing can be basically guaranteed, and complete sealing can be achieved by installing the sealing strip 6.

[0014] Part of the tubes of the uppermost rectangular coil 2 close to the horizontal turning chamber are arranged in a staggered manner from top to bottom in the horizontal direction, and a smoke gap is left between two adjacent layers of tubes to allow the smoke in the furnace to pass through. The smoke gap is used for the smoke circulation between the furnace and the horizontal turning chamber. A top sealing plate is welded on the top of the uppermost rectangular coil.

Claims

1. A large rectangular heat transfer oil furnace structure, comprising a bracket and a rectangular coil, wherein the rectangular coil is stacked and welded from bottom to top to form a furnace, each group of the rectangular coils is provided with an oil inlet and an oil outlet, the oil inlet of each group of the rectangular coils is connected to a corresponding heating surface, and the oil outlet of each group of the rectangular coils is respectively connected to an independent connecting pipe, and the connecting pipe is connected to a ceiling pipe inlet header, characterized in that: Rectangular connecting plates are welded to the long sides of the top and bottom layers of each group of the rectangular coils, respectively. The length of the rectangular connecting plates corresponds to the long sides of the rectangular coils, and the width of the rectangular connecting plates is greater than the distance from one side of the furnace to the side of the bracket. A notch is provided on the outer side of the end of the rectangular connecting plate. When adjacent rectangular coils are installed, the two notches form a strip groove, and a sealing strip is welded in the strip groove. The notch is an inclined surface or a step opening; part of the pipes of the uppermost rectangular coil close to the horizontal turning chamber are staggered from top to bottom in the horizontal direction, and a flue gas gap is left between the two adjacent layers of the pipes. The flue gas gap is used for the flue gas circulation between the furnace and the horizontal turning chamber, and a top sealing plate is welded on the top of the uppermost rectangular coil.

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