CN219473096U

CN219473096U - Nodular cast iron heat preservation pipe

Info

Publication number: CN219473096U
Application number: CN202320732569.1U
Authority: CN
Inventors: 王寅; 胡文条; 李世勋
Original assignee: Shaanxi Geweiqi Energy Saving Technology Co ltd
Current assignee: Shaanxi Geweiqi Energy Saving Technology Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-08-04
Anticipated expiration: 2033-04-06

Abstract

The utility model belongs to the technical field of heat preservation pipelines; discloses a spheroidal graphite cast iron heat preservation pipe; an operation buffer area is arranged between the socket joint and the heat preservation pipe as well as between the socket joint and the heat preservation pipe; the plug connector is provided with an in-place connecting disc; auxiliary lifting rings are arranged on one side of the in-place connecting disc and one side of the connecting head, which are close to the heat preservation pipe; adjacent ductile cast iron pipes are connected with the bearing head through the plug connector, and the in-place connecting disc is arranged on the bearing head; an interface heat preservation area is formed between heat preservation pipes on adjacent ductile cast iron pipes, and heat preservation fillers are arranged in the interface heat preservation area; the heat preservation filler is externally sleeved with a hot melting sleeve, and two ends of the hot melting sleeve are attached to the outside of the heat preservation pipe; through setting up supplementary rings and operation buffer, make the loop wheel machine when lifting by crane nodular cast iron thermal insulation pipe, be difficult for causing the calculation to nodular cast iron thermal insulation pipe, also not influence simultaneously and pack into the nipple of another nodular cast iron pipe with the nipple of nodular cast iron pipe in.

Description

Nodular cast iron heat preservation pipe

Technical Field

The utility model belongs to the technical field of heat-insulating pipelines, and relates to a spheroidal graphite cast iron heat-insulating pipe.

Background

The ductile cast iron pipe is widely applied to urban heating power pipe network systems because of the characteristics of high strength, high extensibility, corrosion resistance, thin wall, light weight, impact resistance, convenient installation and the like. When the ductile cast iron pipe is applied to a heating power pipe network system, the ductile cast iron pipe is generally used as a pipeline for transmitting heating power to transmit the heating power of a heating center to a building.

The heating power pipeline is formed by splicing a plurality of ductile cast iron pipes, and when the ductile cast iron pipes are used for transporting heating power, an insulating layer is usually arranged outside the ductile cast iron pipes; when the thermodynamic pipeline is assembled, the hoisting machine is used for hoisting the spheroidal graphite cast iron pipe at an improper hoisting position, and the heat insulation layer is easy to damage.

Disclosure of Invention

The utility model solves the technical problem of providing the nodular cast iron heat preservation pipe, and by arranging the auxiliary lifting ring and the operation buffer zone, the lifting machine is not easy to calculate the nodular cast iron heat preservation pipe when lifting the nodular cast iron heat preservation pipe, and meanwhile, the plug connector of the nodular cast iron pipe is not influenced to be arranged in the socket connector of another nodular cast iron pipe.

The utility model is realized by the following technical scheme:

the nodular cast iron heat preservation pipe comprises a plurality of nodular cast iron pipes with heat preservation pipes sleeved on the outer sides; the two ends of the spheroidal graphite cast iron pipe extend out of the heat preservation pipe and are respectively provided with a socket joint and a plug connector; an operation buffer area is arranged between the socket joint and the heat preservation pipe as well as between the socket joint and the heat preservation pipe;

the plug connector is provided with an in-place connecting disc; auxiliary lifting rings are arranged on one side of the in-place connecting disc and one side of the connecting head, which are close to the heat preservation pipe;

adjacent ductile cast iron pipes are connected with the bearing head through the plug connector, and the in-place connecting disc is arranged on the bearing head; an interface heat preservation area is formed between heat preservation pipes on adjacent ductile cast iron pipes, and heat preservation fillers are arranged in the interface heat preservation area; the heat preservation filler outside cover is equipped with the hot melt cover, and hot melt cover both ends are laminated with the insulating tube outside.

Further, the heat preservation pipe is sequentially divided into a middle heat preservation layer and an outer protection pipe from inside to outside, and the outer part of the outer protection pipe is attached to the hot melting sleeve.

Further, the heat preservation filler is aerogel flexible heat insulation felt; the heat-insulating layer is a hard polyurethane foam heat-insulating layer; the outer protective tube is a high-density polyethylene outer protective tube.

Further, the bearing heads are distributed in a horn shape, filling grooves are formed in the inner sides of the bearing heads, and sealing rings are arranged in the filling grooves;

the plug connector of one spheroidal graphite cast iron pipe extrudes the sealing ring, so that the sealing ring is filled with the filling groove of the other spheroidal graphite cast iron pipe.

Further, the diameter of the opening of the receiving head is larger than that of the plug.

Compared with the prior art, the utility model has the following beneficial technical effects:

according to the nodular cast iron heat preservation pipe, the auxiliary lifting rings and the operation buffer areas are arranged, so that the nodular cast iron heat preservation pipe is not easy to calculate when the lifting machine lifts the nodular cast iron heat preservation pipe, and meanwhile, the plug connector of the nodular cast iron pipe is not influenced to be installed in the socket connector of another nodular cast iron pipe; the heat preservation pipe sleeved on the outer side of the ductile cast iron pipe can preserve heat of hot fluid in the ductile cast iron pipe, and the loss speed of heat in the ductile cast iron pipe is slowed down; the two ductile cast iron pipes form an interface heat preservation area at the spliced part, so that the spliced part is convenient to assemble and the spliced part is inspected after the spliced part is assembled; and after the inspection is finished, filling and insulating the interface insulating area by using an insulating filler, and fixing the insulating filler through a hot melting sleeve.

Drawings

FIG. 1 is a schematic structural view of a ductile iron pipe with an insulating pipe sleeved outside;

FIG. 2 is a schematic illustration of a thermal insulation structure at the junction of two ductile iron pipes;

reference numerals: 1 is a ductile cast iron pipe, 2 is a heat preservation pipe, 21 is an intermediate heat preservation layer, 22 is an outer protection pipe, 3 is a socket joint, 4 is a plug joint, 5 is a heat preservation filler, 6 is a hot melt sleeve, 7 is a filling groove, 8 is a sealing ring, 9 is a in-place connecting disc, 10 is an auxiliary lifting ring, and 11 is a bolt.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings, which illustrate but do not limit the utility model.

Referring to fig. 1 to 2, the utility model discloses a spheroidal graphite cast iron heat preservation pipe, which comprises a plurality of spheroidal graphite cast iron pipes 1, wherein the outer sides of the spheroidal graphite cast iron pipes are sleeved with heat preservation pipes 2; the two ends of the ductile cast iron pipe 1 extend out of the heat preservation pipe 2 and are respectively provided with a socket joint 3 and a plug joint 4; an operation buffer area is arranged between the socket joint 3 and the heat preservation pipe 2 as well as between the plug joint 4; the plug connector 4 is provided with an in-place connecting disc 9; an auxiliary lifting ring 10 is arranged on one side of the in-place connecting disc 9 and one side of the bearing head 3, which are close to the heat insulation pipe 2; adjacent ductile cast iron pipes 1 are connected with the bearing head 3 through the plug connector 4, and the in-place connecting disc 9 is arranged on the bearing head 3; an interface heat preservation area is formed between the heat preservation pipes 2 on the adjacent ductile cast iron pipes 1, and heat preservation fillers 5 are arranged in the interface heat preservation area; the thermal insulation filler 5 is externally sleeved with a hot melting sleeve 6, and two ends of the hot melting sleeve 6 are attached to the outside of the thermal insulation pipe 2.

Specifically, the heat preservation pipe 2 is sequentially divided into a middle heat preservation layer 21 and an outer protection pipe 22 from inside to outside, and the outer part of the outer protection pipe 22 is attached to the hot melting sleeve 6. The heat preservation pipe 2 sleeved on the outer side of the ductile cast iron pipe 1 can preserve heat of hot fluid in the ductile cast iron pipe 1, and the loss speed of heat in the ductile cast iron pipe 1 is slowed down.

The heat preservation filler 5 is aerogel flexible heat insulation felt; the heat-insulating layer is a hard polyurethane foam heat-insulating layer; the outer protective tube 22 is a high-density polyethylene outer protective tube 22; the inner side surfaces of the plug connector 4 and the sealing ring 8 of the nodular cast iron pipe 1 are coated with lubricating grease during installation, so that friction resistance of the plug connector 4 of the nodular cast iron pipe 1 inserted into the socket connector 3 can be reduced.

The bearing heads 3 are distributed in a horn shape, filling grooves 7 are formed in the inner sides of the bearing heads 3, and sealing rings 8 are arranged in the filling grooves 7; the plug connector 4 of one ductile cast iron pipe 1 presses the sealing ring 8, so that the sealing ring 8 fills the filling groove 7 of the other ductile cast iron pipe 1.

Specifically, be equipped with the arch in the filling groove 7, form the mounting groove between arch and the filling groove 7, the mounting groove is used for installing sealing washer 8, interference fit between sealing washer 8 and the mounting groove.

The diameter of the opening of the receiving head 3 is larger than that of the plug connector 4. Specifically, the diameter of the opening of the socket head 3 is larger than that of the plug head 4, and under the condition that the installation environment is poor, namely, when the diameters of the two ductile cast iron heat-insulating pipes 2 cannot be aligned at one time, the plug head 4 is convenient to insert into the socket head 3.

The embodiments given above are preferred examples for realizing the present utility model, and the present utility model is not limited to the above-described embodiments. Any immaterial additions and substitutions made by those skilled in the art according to the technical features of the technical scheme of the utility model are all within the protection scope of the utility model.

Claims

1. The nodular cast iron heat preservation pipe is characterized by comprising a plurality of nodular cast iron pipes (1) with heat preservation pipes (2) sleeved on the outer sides; the two ends of the ductile cast iron pipe (1) extend out of the heat preservation pipe (2) and are respectively provided with a socket joint (3) and an adapter (4); an operation buffer area is arranged between the socket joint (3) and the heat preservation pipe (2) and between the socket joint (4);

an in-place connecting disc (9) is arranged on the plug connector (4); an auxiliary lifting ring (10) is arranged on one side of the in-place connecting disc (9) and one side of the bearing head (3) close to the heat preservation pipe (2);

adjacent ductile cast iron pipes (1) are connected with the bearing head (3) through the plug-in connector (4), and the in-place connecting disc (9) is arranged on the bearing head (3); an interface heat preservation area is formed between the heat preservation pipes (2) on the adjacent ductile cast iron pipes (1), and a heat preservation filler (5) is arranged in the interface heat preservation area; the heat preservation filler (5) is externally sleeved with a hot melting sleeve (6), and two ends of the hot melting sleeve (6) are attached to the outside of the heat preservation pipe (2).

2. The nodular cast iron heat preservation pipe according to claim 1, wherein the heat preservation pipe (2) is sequentially divided into a middle heat preservation layer (21) and an outer protection pipe (22) from inside to outside, and the outer part of the outer protection pipe (22) is attached to the hot melting sleeve (6).

3. A spheroidal graphite cast iron heat preservation pipe according to claim 1, wherein the heat preservation filler (5) is an aerogel flexible heat insulation felt; the heat-insulating layer is a hard polyurethane foam heat-insulating layer; the outer protective tube (22) is a high-density polyethylene outer protective tube (22).

4. The nodular cast iron heat preservation pipe according to claim 1, wherein the bearing heads (3) are distributed in a horn shape, filling grooves (7) are formed in the inner sides of the bearing heads (3), and sealing rings (8) are arranged in the filling grooves (7);

the plug connector (4) of one nodular cast iron pipe (1) extrudes the sealing ring (8), so that the sealing ring (8) is filled with the filling groove (7) of the other nodular cast iron pipe (1).

5. The nodular cast iron heat preservation pipe according to claim 1, wherein the diameter of the opening of the receiving head (3) is larger than that of the plug connector (4).