Inner and outer ring coil pipe gap supporting structure for machine heat carrier boiler

Abstract

The utility model discloses an inner and outer ring coil pipe gap supporting structure for a machine heat carrier boiler, and belongs to the technical field of boilers. The supporting device is applied to a boiler body, an inner ring coil pipe and an outer ring coil pipe are arranged in the boiler body, the supporting device is arranged between the inner ring coil pipe and the outer ring coil pipe, and the supporting device comprises a supporting piece and a fixing assembly used for fixing the supporting piece. The utility model provides a supporting structure capable of effectively supporting the inner and outer ring coil pipes and keeping the coil pipe gap stable, so that the inner and outer ring coil pipe gap supporting structural part of the machine heat carrier boiler is more stable, lighter and higher in strength, and the supporting part is effectively expanded.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of boiler, concretely relates to an inner and outer ring disc pipe gap support structure for machine heat carrier boiler. BACKGROUND

[0002] The organic heat carrier boiler is also called heat conducting oil boiler, which is a boiler using heat conducting oil for heating. The heat conducting oil, also called organic heat carrier or heat medium oil, is generally fueled by coal, oil or gas, uses heat conducting oil as medium, and uses heat oil circulating pump to force medium to circulate in liquid phase, so as to deliver heat energy to heat equipment and then return to heating furnace for reheating. The organic heat carrier boiler has the advantages of obtaining high working temperature under low pressure and high-precision control of medium operation. In the development process, in order to improve the thermal efficiency of the boiler and ensure the safety and stability of the operation, higher requirements are put forward for the optimization design of the internal structure of the boiler, especially the design of the inner and outer ring disc pipe gap support structure. The support structure can fix the position of the disc pipe, ensure that the gap between the disc pipes is kept within the design range, avoid the flow of heat carrier being not smooth due to the shaking or deformation of the disc pipe, improve the heat exchange efficiency, and achieve better heating effect.

[0003] Most of the existing organic heat carrier boilers have a welding type support structure for the inner and outer ring disc pipe gap. The relative position of the disc pipe is fixed by welding a support member with a specific shape between the inner and outer ring disc pipes. For example, a baffle with an arc-shaped groove is welded on the disc pipe to make the disc pipe clamp in the groove.

[0004] As shown in Figure 1 , Figure 2 , it is a support structure diagram for the inner and outer ring disc pipe gap of the existing organic heat carrier boiler. The steel pipe (44) is placed between the inner ring disc pipe (11) and the outer ring disc pipe (22) and is welded and fixed with the mutual iron (33). For large organic heat carrier boilers, the distance between the inner ring and the outer ring disc pipe is large, the steel pipe (44) is not easy to select, the inner ring disc pipe is too heavy, the steel pipe (44) is easy to deform, the two ends of the steel pipe (44) are welded with the mutual iron (33), and the steel pipe (44) is easy to be damaged due to thermal expansion. Thus, the normal operation and service life of the boiler are affected. Therefore, it is necessary to design a support structure that can effectively support the inner and outer ring disc pipes and keep the disc pipe gap stable to meet the development needs of the organic heat carrier boiler. INVENTION CONTENTS

[0005] In view of the problems mentioned in the background art, the utility model provides an inner and outer ring disc pipe gap support structure for machine heat carrier boiler, which solves the problems of insufficient strength, instability and damage to the disc pipe due to thermal expansion of the structural member when the inner and outer ring disc pipe gap of the large machine heat carrier boiler is large.

[0006] Technical scheme: In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A gap support structure between inner and outer coil pipes of an organic heat carrier boiler is applied to a boiler body, the boiler body is provided with an inner coil pipe and an outer coil pipe, and a support device is arranged between the inner coil pipe and the outer coil pipe, the support device comprises a support piece and a fixing assembly for fixing the support piece;

[0008] The support piece is a triangular structural piece composed of a steel pipe and a steel plate;

[0009] The steel plates are uniformly distributed between the steel pipes;

[0010] The fixing assembly comprises a fixed round steel and a mutual iron; the mutual iron is fixedly connected to one end of the steel pipe, and the fixed round steel is fixedly connected to the other end of the steel pipe, and the lower end of the fixed round steel is fixedly connected with the mutual iron.

[0011] Preferably, the number of mutual irons is multiple.

[0012] Preferably, the steel pipe is welded with the mutual iron, and the fixed round steel is welded with the steel pipe and the mutual iron.

[0013] Beneficial effects: compared with the prior art, the utility model has the following advantages:

[0014] (1) the support structure can make the gap support structure piece between the inner and outer coil pipes of the organic heat carrier boiler more stable, more portable, higher in strength and effectively expand the support piece.

[0015] (2) the support device adopts a triangular structural piece as the support piece, the stability of the triangle can effectively resist external force from all directions; a plurality of uniformly distributed triangular support pieces form a stable support network between the inner and outer coil pipes, can uniformly disperse the stress received by the coil pipe, and prevent the occurrence of the situation that the local stress is too large to cause insufficient or unstable support structure strength.

[0016] (3) the support device is simple in process manufacturing and high in applicability, and can support coil pipes of different forms and different gaps. DETAILED DESCRIPTION

[0017] Figure 1 is a side view of the existing gap support structure between the inner and outer coil pipes of the organic heat carrier boiler;

[0018] Figure 2 is Figure 1 a schematic view of A-A in figure

[0019] Figure 3 is a side view of the gap support structure between the inner and outer coil pipes of the organic heat carrier boiler of the utility model;

[0020] Figure 4 is Figure 3 a schematic view of B-B in figure 1;

[0021] Figure 5 is a structural schematic view of the support structure assembly of the utility model;

[0022] In the figure, the marks are: 1, inner ring coil pipe; 2, outer ring coil pipe; 3, mutual iron; 4, fixed round steel; 5, steel pipe; 6, steel plate. DETAILED DESCRIPTION

[0023] The utility model will be further illustrated in combination with specific embodiments, and the embodiments are implemented under the premise of the technical scheme of the utility model, and it should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model.

[0024] As Figure 3 , Figure 4 , Figure 5 indicated, the inner and outer ring coil pipe gap support structure for hot carrier boiler provided in the embodiment is applied to a boiler body, and the boiler body is provided with an inner ring coil pipe 1 and an outer ring coil pipe 2 and a support device arranged between the inner ring coil pipe 1 and the outer ring coil pipe 2, and the support device comprises a support piece and a fixing assembly for fixing the support piece.

[0025] As Figure 3 , Figure 5 indicated, the support piece is a triangular structural piece composed of a steel pipe 5 and a steel plate 6, the steel pipe 5 is arranged at each of the three ends of the steel plate 6, and the steel plate 6 is evenly distributed between the steel pipes 5; this triangular structural piece utilizes the stability principle of a triangle and can bear a large external force without being easily deformed in a mechanical structure.

[0026] As Figure 4 indicated, the fixing assembly comprises a fixed round steel 4 and a mutual iron 3; the mutual iron 3 is fixedly connected to one end of the steel pipe 5, and the fixed round steel 4 is fixedly connected to the other end of the steel pipe 5, and the lower end of the fixed round steel 4 is fixedly connected to the mutual iron 3.

[0027] In the embodiment, the mutual iron 3 is circular, the number of the mutual irons 3 is multiple, the steel pipe 5 is fixedly connected to the mutual irons 3 by spot welding, and the fixed round steel 4 is fixedly connected to the steel pipe 5 and the mutual irons 3 by spot welding.

[0028] In the embodiment, the steel plate 6 and the steel pipe 5 are selected according to the size of the boiler, and the selected steel pipe 5, steel plate 6, fixed round steel 4 and mutual iron 3 have sufficient strength and high-temperature resistance, which can meet the requirements of the boiler operating environment.

[0029] The working principle or use flow of the utility model is: firstly, select appropriate size steel pipe 5 and steel plate 6, and connect the steel pipe 5 and the steel plate 6 into a triangular structure, ensure the connection of the steel pipe 5 and the steel plate 6 is firm during the connecting process; then prepare the fixed round steel 4 and the mutual iron 3, connect the mutual iron 3 to one end of the steel pipe 5 through spot welding, connect the fixed round steel 4 to the other end of the steel pipe 5 through spot welding, and spot weld the mutual iron 3 to the lower end of the fixed round steel 4.

[0030] Then, place the assembled triangular support and the fixed assembly to the predetermined position between the inner circle coil pipe 1 and the outer circle coil pipe 2; after the coil pipe is in place, cut off the fixed round steel 4 along the pipe support and the round steel contact surface before the boiler water pressure (to prevent the support from expanding due to heat, drive the round steel and the mutual iron to pull the heat conducting oil coil pipe, and cause oil leakage); when the boiler is running, the inner and outer circle coil pipe 2 will be subjected to the pressure of the internal heat carrier and the stress generated by the thermal expansion of itself; the plurality of evenly distributed triangular supports form a stable support network between the inner circle coil pipe 1 and the outer circle coil pipe 2, which can uniformly disperse the stress received by the coil pipe, prevent the local stress from being too large to cause insufficient or unstable support structure strength; at the same time, when the support device expands, the relative sliding and deformation between the components can be realized, so as to avoid the expansion of the support structure to generate excessive tensile stress on the coil pipe, and prevent the coil pipe from being pulled off.

[0031] The support device can effectively prevent the insufficient strength and instability of the large organic heat carrier boiler coil gap support structure, and prevent the expansion of the support structure from pulling off the coil pipe and causing the boiler to leak oil, thereby improving the safety of the boiler operation.

[0032] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and decorations can be made without departing from the principle of the utility model, and these improvements and decorations should also be regarded as the protection range of the utility model.

Claims

1. A kind of inner and outer ring coil gap support structure for heat carrier boiler, it is applied to boiler body, inner and outer ring coil (1) and outer ring coil (2) are set in boiler body, it is characterized by: Supporting devices are arranged between the inner coil pipe (1) and the outer coil pipe (2), and the supporting devices comprise supporting members and fixing assemblies for fixing the supporting members; The supporting member is a triangular structural member composed of a steel pipe (5) and a steel plate (6); The steel plates (6) are evenly distributed between the steel pipes (5); The fixing assembly comprises a fixed round steel (4) and a mutual iron (3); the mutual iron (3) is fixedly connected to one end of the steel pipe (5), the fixed round steel (4) is fixedly connected to the other end of the steel pipe (5), and the lower end of the fixed round steel (4) is fixedly connected with the mutual iron (3).

2. The inner and outer ring space support structure for a hot carrier boiler according to claim 1, characterized in that: The number of the mutual irons (3) is multiple.

3. The inner and outer ring tube gap support structure for a hot carrier boiler according to claim 1, characterized in that: The steel pipe (5) is welded with the mutual iron (3), and the fixed round steel (4) is welded with the steel pipe (5) and the mutual iron (3).

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