Prefabricated directly-buried steam thermal insulation pipe for urban heat supply

Abstract

The utility model relates to a prefabricated direct burial steam thermal insulation pipe for urban heat supply, which belongs to the technical field of thermal insulation pipes and comprises a plurality of pipelines, a branch valve is arranged on one side of each pipeline and comprises a hand wheel, a threaded rod, a sealing plug and a semicircular baffle, the hand wheel is fixedly mounted at the top of the threaded rod, and the sealing plug is fixedly mounted at the bottom of the threaded rod. The two baffles are arranged on the upper side and the lower side in a central symmetry mode, a square ring is transversely and fixedly installed between the upper baffle and the lower baffle, a hole formed in the middle of the square ring corresponds to the sealing plug, the outer wall of the pipeline is wrapped with a heat preservation layer, and the heat preservation layer is sleeved with a protection layer. The branch valves are independently arranged on the pipeline, the branch valve on the front side of the section of pipeline is closed when the section of pipeline is overhauled, the working intensity of maintenance personnel is reduced, the maintenance efficiency is improved, the maintenance result can be directly observed after the branch valves are opened, and subsequent problems can be remedied in time.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation pipes, in particular to a prefabricated direct-buried steam thermal insulation pipe for urban heating. Background Art

[0002] Steam insulation pipes are widely used in the fields of petroleum, chemical industry, pharmaceuticals, food, papermaking, shipbuilding, urban heating, etc. Prefabricated insulation pipes can be used directly after connection, which is very convenient.

[0003] The existing prefabricated insulated pipes are connected and directly controlled by the main valve. During maintenance, the main control valve must be closed in advance for maintenance. However, when the maintenance site is far away from the main control valve, maintenance personnel are required to close and open the main control valve back and forth to achieve the purpose of inspection, maintenance, and re-inspection. Moreover, the long distance of the main control valve makes it impossible to directly observe the maintenance results, resulting in low maintenance efficiency and increased workload for maintenance personnel. Utility Model Content

[0004] In view of the above problems in the prior art, the utility model provides a prefabricated direct-buried steam insulation pipe for urban heating, which is realized by the following technical solutions:

[0005] A prefabricated direct-buried steam insulated pipe for urban heating, comprising a plurality of pipes, a branch valve being arranged on one side of the pipe, the branch valve comprising a hand wheel, a threaded rod, a sealing plug and a semicircular baffle, the hand wheel being fixedly mounted on the top of the threaded rod, the sealing plug being fixedly mounted on the bottom of the threaded rod, two baffles being arranged symmetrically at the upper and lower sides, a square ring being laterally fixedly mounted between the upper and lower baffles, a hole opened in the middle position of the square ring corresponding to the sealing plug, an insulation layer being wrapped around the outer wall of the pipe, and a protective layer being arranged outside the insulation layer.

[0006] The utility model is further configured as follows: a valve pipe is arranged between two adjacent pipes, the sub-valve is arranged in the valve pipe, the threaded rod passes through the top of the valve pipe and is threadedly connected to the valve pipe, the two baffles are respectively fixedly installed on the upper and lower sides of the inner wall of the valve pipe, the sealing plug is truncated cone-shaped and fits with the inner circle of the square ring, the threaded rod is arranged through the square ring, and the sealing plug is arranged below the square ring.

[0007] The utility model is further configured as follows: the outer ring of the valve pipe is separately provided with a heat preservation layer, and the outer ring of the heat preservation layer of the outer ring of the valve pipe is separately provided with a protective layer.

[0008] The utility model is further configured as follows: the valve pipe is connected to a pipeline flange, a sealing ring is provided at the connection between the valve pipe and the pipeline, and sealing gaskets are fixedly provided on the inner and outer walls of the valve pipe passing through the threaded rod.

[0009] In summary, the beneficial technical effects of the utility model are:

[0010] Separate sub-valves are provided on the pipeline. When inspecting a section of the pipeline, the sub-valve in front of that section of the pipeline is closed, which reduces the workload of maintenance personnel and speeds up maintenance efficiency. Moreover, the maintenance result can be directly observed after opening the sub-valve, and subsequent problems can be remedied in time. By separately providing valve pipes, the valve pipe or pipeline can be replaced separately to avoid replacing the sub-valves together when the pipeline is damaged, or replacing the sub-valve together when the pipeline is damaged, thereby reducing maintenance costs. By separately providing insulation layers and protective layers on the valve pipe and pipeline, they can be repaired and replaced separately, further reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram for showing the overall structure of the utility model.

[0012] Figure 2 It is a schematic diagram for showing the maintenance status of the utility model.

[0013] Figure 3 It is a bottom view for showing the middle ring of the utility model.

[0014] Figure numerals: 1, pipeline; 2, valve; 201, hand wheel; 202, threaded rod; 203, sealing plug; 204, baffle; 205, square ring; 3, insulation layer; 4, protective layer; 5, valve tube. DETAILED DESCRIPTION

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0016] Example

[0017] like Figure 1-3 As shown, a prefabricated direct-buried steam insulated pipe for urban heating disclosed by the utility model comprises a plurality of pipes 1, and the plurality of pipes 1 are combined to form a pipeline. A branch valve 2 is arranged on one side of the pipe 1, and the branch valve 2 comprises a hand wheel 201, a threaded rod 202, a sealing plug 203 and a semicircular baffle 204. The hand wheel 201 is fixedly mounted on the top of the threaded rod 202, and the sealing plug 203 is fixedly mounted on the bottom of the threaded rod 202. Two baffles 204 are arranged and are centrally symmetrically arranged on the upper and lower sides. A square ring 205 is laterally fixedly mounted between the upper and lower baffles 204, and a hole opened in the middle position of the square ring 205 corresponds to the sealing plug 203. The outer wall of the pipe 1 is wrapped with an insulation layer 3, and the outer cover of the insulation layer 3 is provided with a protective layer 4.

[0018] A valve pipe 5 is arranged between two adjacent pipes 1, the sub-valve 2 is arranged in the valve pipe 5, the threaded rod 202 passes through the top of the valve pipe 5 and is threadedly connected to the valve pipe 5, the two baffles 204 are fixedly installed on the upper and lower sides of the inner wall of the valve pipe 5 respectively, the sealing plug 203 is truncated cone-shaped and fits with the inner circle of the square ring 205, the threaded rod 202 is arranged through the square ring 205, and the sealing plug 203 is arranged below the square ring 205.

[0019] The outer ring of the valve tube 5 is separately provided with an insulation layer 3 , the outer ring of the insulation layer 3 of the outer ring of the valve tube 5 is separately provided with a protective layer 4 , the threaded rod 202 penetrates the insulation layer 3 and the protective layer 4 , and the hand wheel 201 is arranged on the outside of the top of the protective layer 4 .

[0020] The valve pipe 5 is connected to the pipeline 1 by flanges, a sealing ring is provided at the connection between the valve pipe 5 and the pipeline 1, and sealing gaskets are fixedly provided on the inner and outer walls of the valve pipe 5 where the threaded rod 202 is penetrated.

[0021] Specific implementation methods of this example: a number of pipelines 1 and valve tubes 5 are connected at intervals to form a pipeline. Normally, all sub-valves 2 are in an open state. When a section of pipeline 1 needs to be repaired, the valve tube 5 on the front side of the pipeline 1 is found, and the hand wheel 201 is turned to drive the threaded rod 202 to rotate and rise upward, driving the sealing plug 203 to move upward and block the inner ring of the square ring 205. When the hand wheel 201 cannot be turned, it proves that the sealing plug 203 has contacted the square ring 205 and closed the sub-valve 2. After the sub-valve 2 is closed, the pipeline is repaired; when the pipeline 1 needs to be replaced, the sub-valve 2 on the front side of the pipeline is closed, and the pipeline 1 is disassembled and replaced; when the valve tube 5 needs to be replaced, the sub-valve 2 on the valve tube 5 on the front side of the valve tube 5 is closed, and the valve tube 5 is disassembled for replacement; after the replacement and maintenance are completed, the hand wheel 201 on the front side valve tube 5 is turned in the opposite direction until it cannot be turned.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A prefabricated direct-buried steam insulation pipe for urban heating, comprising a pipe (1), characterized in that: A branch valve (2) is arranged on one side of the pipeline (1), and the branch valve (2) comprises a hand wheel (201), a threaded rod (202), a sealing plug (203) and a semicircular baffle (204); the hand wheel (201) is fixedly mounted on the top of the threaded rod (202); the sealing plug (203) is fixedly mounted on the bottom of the threaded rod (202); two baffles (204) are arranged and are centrally symmetrically arranged on upper and lower sides; a square ring (205) is transversely fixedly mounted between the upper and lower baffles (204); a hole in the middle of the square ring (205) corresponds to the sealing plug (203); an outer wall of the pipeline (1) is wrapped with a heat-insulating layer (3); and a protective layer (4) is arranged on the outer cover of the heat-insulating layer (3).

2. The prefabricated direct-buried steam insulation pipe for urban heating according to claim 1 is characterized in that: A valve pipe (5) is arranged between two adjacent pipes (1), the sub-valve (2) is arranged in the valve pipe (5), the threaded rod (202) passes through the top of the valve pipe (5) and is threadedly connected to the valve pipe (5), the two baffles (204) are respectively fixedly installed on the upper and lower sides of the inner wall of the valve pipe (5), the sealing plug (203) is truncated cone-shaped and fits with the inner ring of the square ring (205), the threaded rod (202) passes through the square ring (205), and the sealing plug (203) is arranged below the square ring (205).

3. The prefabricated direct-buried steam insulation pipe for urban heating according to claim 2 is characterized by: The outer ring of the valve tube (5) is separately provided with a heat-insulating layer (3), and the outer ring of the heat-insulating layer (3) of the outer ring of the valve tube (5) is separately provided with a protective layer (4).

4. The prefabricated direct-buried steam insulation pipe for urban heating according to claim 3 is characterized by: The valve pipe (5) and the pipeline (1) are flange-connected, a sealing ring is provided at the connection between the valve pipe (5) and the pipeline (1), and sealing gaskets are fixedly provided on the inner and outer walls of the valve pipe (5) where it passes through the threaded rod (202).

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