Encircling type pipeline heat tracing device

Abstract

The utility model discloses a surrounding type pipeline heat tracing device, which belongs to the technical field of pipeline maintenance and comprises two arc-shaped heat tracing rings surrounding the outer wall of a pipeline to be heated. The two heat tracing rings are symmetrically arranged on the front surface and the rear surface of a to-be-heated pipeline; each heat tracing ring comprises a cavity for accommodating steam; an air inlet pipeline and a liquid outlet pipeline which are communicated with the cavity are arranged at the bottom of each heat tracing ring; a flow guide slope is arranged at the bottom of the cavity, an upper port of the air inlet pipeline is located at the slope top of the flow guide slope, and an upper port of the liquid outlet pipeline is located at the slope bottom of the flow guide slope. The first gas collection tank is mounted at the lower end of the gas inlet pipeline; the first gas collecting tank is provided with a steam source pipe orifice communicated with a heat source; the second gas collection tank is mounted at the lower end of the liquid outlet pipeline; and the second gas collection tank is provided with a liquid discharge pipe orifice. According to the utility model, the thermal insulation function is realized, and the pipeline to be heated can be timely and adjustably heated and protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline maintenance, and in particular relates to an embracing type pipeline heating device. Background Art

[0002] As we all know, in metallurgical enterprises, a large number of energy pipelines are needed, such as gas pipelines or water pipelines; the normal and safe operation of these pipelines is one of the necessary conditions to ensure the normal operation of steelmaking enterprises;

[0003] At present, in order to protect the environment, most metallurgical enterprises are located in remote mountainous areas. Due to the harsh conditions in these areas, especially in the cold winter, the temperature may drop to minus 10 to 20 degrees Celsius. In order to prevent the medium in the pipeline from freezing, the pipeline needs to be protected from freezing. The traditional antifreeze protection measure is mainly to wrap the outer wall of the pipeline with an insulation layer. These insulation layers have great protective significance for pipeline antifreeze, but for some key parts, such as areas with relatively humid environment, the freezing of the insulation layer will aggravate the rapid freezing of the medium in the pipeline, so the insulation layer needs to be replaced frequently. Obviously, the traditional technology has the following defects:

[0004] First, frequently replacing the insulation layer consumes a lot of manpower and material resources;

[0005] Second, if the insulation layer is not replaced in time, it is difficult to ensure the normal production needs of the enterprise;

[0006] 3. The insulation layer can only realize the function of heat preservation. For some hot water supply pipelines, the insulation layer cannot heat the medium in the pipeline. Utility Model Content

[0007] The utility model provides an embracing pipeline heating device to solve the technical problems existing in the known technology. The device can provide timely and adjustable heating protection for the pipeline to be heated while realizing the heat preservation function.

[0008] The purpose of the utility model is to provide an embracing pipe heating device, comprising:

[0009] Two arc-shaped heating rings are encircled on the outer wall of the pipeline to be heated; the two heating rings are symmetrically arranged on the front surface and the rear surface of the pipeline to be heated; each heating ring includes a cavity for accommodating steam; an air inlet pipeline and a liquid outlet pipeline connected to the cavity are arranged at the bottom of each heating ring; a guide slope is arranged at the bottom of the cavity, the upper port of the air inlet pipeline is located at the top of the guide slope, and the upper port of the liquid outlet pipeline is located at the bottom of the guide slope;

[0010] A first gas collecting tank installed at the lower end of the air inlet pipeline; the first gas collecting tank is provided with a steam source pipe port connected to a heat source;

[0011] A second gas collecting tank is installed at the lower end of the liquid outlet pipeline; the second gas collecting tank is provided with a liquid discharge pipe outlet.

[0012] Preferably, a steam trap is installed at the lower end of the liquid discharge pipe outlet.

[0013] Preferably, the butt surfaces of the two heating rings are welded to each other.

[0014] Preferably, the two heating rings are connected by a clamp.

[0015] Preferably, the first gas collecting tank is provided with a plurality of interfaces connected to the air intake pipeline.

[0016] Preferably, the second gas collecting tank is provided with a plurality of interfaces connected to the liquid outlet pipeline.

[0017] Preferably, the angle between the upper surface of the guide slope and the horizontal plane is in the range of 3-15 degrees.

[0018] The advantages and positive effects of the utility model are:

[0019] The utility model can realize the heat preservation function and at the same time carry out timely and adjustable heating protection for the heating pipeline.

[0020] Specifically:

[0021] The utility model adds a heating ring to the outer wall of the pipeline to be heated, thereby preventing the pipeline to be heated from direct contact with cold air, thereby achieving the function of heat insulation;

[0022] The heating ring in the utility model comprises a cavity for accommodating steam; by injecting hot steam into the cavity, heating protection of the pipeline to be heated can be achieved to prevent the medium in the pipeline to be heated from freezing;

[0023] The utility model is provided with a guide slope at the bottom of the cavity, which can realize the rapid outlet of the cooling liquid and avoid the liquid being retained in the cavity.

[0024] The utility model can realize the control of the heating temperature by controlling the supply amount of hot steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model;

[0026] Figure 2 It is a left view of the heating ring in the preferred embodiment of the utility model;

[0027] Figure 3 It is an axial cross-sectional view of a preferred embodiment of the utility model;

[0028] Figure 4 It is a left side view of the preferred embodiment of the utility model in use;

[0029] Figure 5 It is a front view of the preferred embodiment of the utility model in use.

[0030] Among them: 1. Heating ring; 1-1. Diversion slope; 2. Second gas collecting tank; 3. Air inlet pipeline; 4. Liquid outlet pipeline; 5. First gas collecting tank; 6. Steam source pipe outlet; 7. Liquid discharge pipe outlet; 8. Steam trap; 9. Pipeline to be heated. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purpose, technical scheme and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] like Figures 1 to 5 As shown, the technical solution of the utility model is:

[0033] An embracing pipe heating device, comprising:

[0034] Two arc-shaped heating rings 1, the two arc-shaped heating rings 1 embrace the outer wall of the pipeline 9 to be heated, and the inner diameter of the arc-shaped heating ring 1 is slightly larger than the outer diameter of the pipeline 9 to be heated; the two heating rings 1 are symmetrically arranged on the front surface and the rear surface of the pipeline 9 to be heated; each heating ring 1 includes a cavity for accommodating steam; an air inlet pipeline 3 and a liquid outlet pipeline 4 connected to the cavity are arranged at the bottom of each heating ring 1; a guide slope 1-1 is arranged at the bottom of the cavity, the upper port of the air inlet pipeline 3 is located at the top of the guide slope 1-1, and the upper port of the liquid outlet pipeline 4 is located at the bottom of the guide slope 1-1;

[0035] A first gas collecting tank 5 is installed at the lower end of the air inlet pipeline 3; the first gas collecting tank 5 is provided with a steam source pipe port 6 connected to a heat source;

[0036] The second gas collecting tank 2 is installed at the lower end of the liquid outlet pipeline 4; the second gas collecting tank 2 is provided with a liquid discharge pipe outlet 7.

[0037] The connection between the two heating rings 1 can be a fixed connection or a detachable connection;

[0038] Wherein: the fixed connection method includes: the butt joint surfaces of the two heating rings 1 are welded to each other; the detachable connection method includes: the two heating rings 1 are connected by a clamp;

[0039] A steam trap 8 is installed at the lower end of the liquid discharge pipe outlet 7 .

[0040] The first gas collecting tank 5 is provided with a plurality of interfaces connected to the air inlet pipeline 3 , that is, one first gas collecting tank 5 can be connected to a plurality of heating rings 1 .

[0041] The second gas collecting tank 2 is provided with a plurality of interfaces connected to the liquid outlet pipeline 4 , that is, one second gas collecting tank 2 can be connected to a plurality of heating rings 1 .

[0042] The angle between the upper surface of the guide slope 1-1 and the horizontal plane is in the range of 3-15 degrees.

[0043] The working principle of the utility model is:

[0044] 1. Installation Figure 4 and Figure 5 , two arc-shaped heating rings 1 are encircled around the outer wall of the pipeline 9 to be heated;

[0045] 2. Connect two heating rings 1 (welding or clamp connection);

[0046] 3. Connect gas pipeline devices;

[0047] 4. Set the flow rate and rate of the steam heat source according to the heating requirements;

[0048] 5. The hot steam exchanges heat with the pipeline to be heated through the heating ring 1, and the condensed water is discharged through the liquid outlet pipeline 4.

[0049] This embodiment takes the gas pipeline as an example, and its diameter is φ300mm. This application is used for antifreeze and heat preservation of key parts of the gas pipeline. Four semicircular heating rings can be set to form two groups of heating devices. Each group of heating devices includes a circular device with an inner diameter of φ300mm formed by two semicircular heating rings connected together. The inner bottom of the heating ring is welded with a stainless steel plate with a slope of 5 degrees. The two heating rings fit tightly with the gas pipeline and are fixed by welding. Each group has two steam inlets and steam outlets, and the inlets and outlets use 6-point stainless steel round pipes.

[0050] Two sets of gas collecting tanks are attached. Each set of gas collecting tanks is equipped with four 6-inch stainless steel round tubes on the top and one 6-inch stainless steel round tube on the bottom.

[0051] The two sets of heating devices have a total of 4 steam inlets and 4 steam outlets, which are connected to the corresponding interfaces on the top of the two sets of gas collecting tanks through 8 steam hoses. The bottom interface of the gas collecting tank connected to the steam inlet section is connected to the steam source, and the bottom end outlet of the gas collecting tank connected to the steam outlet end is connected to the steam trap.

[0052] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. An embracing pipe heating device, characterized in that: include: Two arc-shaped heating rings (1) are arranged around the outer wall of the pipeline (9) to be heated; the two heating rings (1) are symmetrically arranged on the front surface and the rear surface of the pipeline (9) to be heated; each heating ring (1) comprises a cavity for accommodating steam; an air inlet pipeline (3) and a liquid outlet pipeline (4) in communication with the cavity are arranged at the bottom of each heating ring (1); a guide slope (1-1) is arranged at the bottom of the cavity, the upper port of the air inlet pipeline (3) is located at the top of the guide slope (1-1), and the upper port of the liquid outlet pipeline (4) is located at the bottom of the guide slope (1-1); A first gas collecting tank (5) installed at the lower end of the air intake pipeline (3); the first gas collecting tank (5) is provided with a steam source pipe port (6) connected to a heat source; A second gas collecting tank (2) is installed at the lower end of the liquid outlet pipeline (4); the second gas collecting tank (2) is provided with a liquid discharge pipe outlet (7).

2. The embracing pipe heating device according to claim 1, characterized in that: A steam trap (8) is installed at the lower end of the liquid discharge pipe opening (7).

3. The embracing pipe heating device according to claim 1, characterized in that: The butt surfaces of the two heating rings (1) are welded to each other.

4. The embracing pipe heating device according to claim 1, characterized in that: The two heating rings (1) are connected by a clamp.

5. The embracing pipe heating device according to claim 1, characterized in that: The first gas collecting tank (5) is provided with a plurality of interfaces connected to the air intake pipeline (3).

6. The embracing pipe heating device according to claim 1, characterized in that: The second gas collecting tank (2) is provided with a plurality of interfaces connected to the liquid outlet pipeline (4).

7. The embracing pipe heating device according to any one of claims 1 to 6, characterized in that: The angle between the upper surface of the guide slope (1-1) and the horizontal plane is in the range of 3-15 degrees.

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