CN220249192U

CN220249192U - Double-wall pipe with ventilation function

Info

Publication number: CN220249192U
Application number: CN202321638386.XU
Authority: CN
Inventors: 房威; 陈恒亮
Original assignee: Nantong Shunyu Shipbuilding Technology Co ltd
Current assignee: Nantong Shunyu Shipbuilding Technology Co ltd
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2023-12-26
Anticipated expiration: 2033-06-27

Abstract

The utility model discloses a double-wall pipe with a ventilation function, which comprises an inner pipe, an outer pipe and a connecting flange, wherein the inner pipe is arranged on the inner side of the outer pipe, the connecting flanges are fixedly arranged at two ends of the outer pipe, the two ends of the inner pipe are fixedly arranged on the connecting flange, more than two vent holes are formed in the two connecting flanges, a connecting pipe is inserted into the vent holes in one connecting flange, more than two square grooves are uniformly formed in one connecting flange, two T-shaped square blocks are symmetrically and slidably arranged in one square groove, and one end of each T-shaped square block extends into the adjacent square groove and is fixedly provided with an arc block. According to the utility model, not only can the leaked fuel gas between the inner pipe and the outer pipe be guided through the connecting pipe, but also the connecting pipe can be clamped and fixed through the movement of the conical block, and the sealing effect of the double-wall pipeline can be improved through the circular ring and the annular groove.

Description

Double-wall pipe with ventilation function

Technical Field

The utility model relates to the technical field of double-wall pipes, in particular to a double-wall pipe with a ventilation function.

Background

The outer layer of the double-wall pipe is made of high-quality and soft cross-linked polyolefin materials, the inner layer of the double-wall pipe is formed by compounding and processing hot melt adhesives, and the manufacturing method before the fuel gas supply pipe of the marine dual-fuel engine is generally to connect the whole pipeline in a welding mode, so that the marine double-wall pipe is required to have a ventilation function, and the fire disaster caused by pipeline leakage is avoided.

Through retrieving, disclosed in the patent of publication No. CN209026340U is a double-walled pipe with ventilation function, has realized the isolation of gas pipeline and external space, has avoided the gas pipeline damage to lead to the risk of gas leakage to surrounding environment, has guaranteed the ventilation function of double-walled pipe simultaneously, but the junction seal effect between the pipeline is not good, causes the fuel flow of leakage to the environment easily, reduces the security that the pipeline was used.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a double-wall pipe with a ventilation function.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a double-walled pipe with ventilation function, includes inner tube, outer tube and flange, the outer tube inboard sets up the inner tube, the equal fixed mounting in outer tube both ends has flange, and the equal fixed mounting in inner tube both ends is on flange, two all set up more than two air vents on the flange, one of them inside grafting of air vent on the flange has the connecting pipe, one of them evenly set up more than two square grooves on the flange, and two T type squares of inside symmetry slidable mounting of one of them square groove, T type square one end extends to adjacent square inslot portion and fixed mounting has the arc piece.

Further, more than two square blocks are uniformly and fixedly arranged on the other connecting flange, and a conical block is fixedly arranged at the other end of each square block.

Further, an annular groove is formed in one of the connecting flanges, a circular ring is fixedly installed on the other connecting flange, and the size of the cross section of the circular ring is the same as that of the cross section of the annular groove.

Further, a spring is fixedly arranged at one end of the arc-shaped block, which is close to the connecting pipe, and an arc-shaped clamping block is fixedly arranged at the other end of the spring.

Further, the other end of the connecting pipe extends into the outer pipe.

The beneficial effects of the utility model are as follows:

1. the leakage fuel gas between the inner pipe and the outer pipe is guided by the connecting pipe, and the two double-wall pipes are connected end to end, so that the other end of the connecting pipe extends between the inner pipe and the outer pipe of the other double-wall pipe, and the leakage prevention effect of the double-wall pipe is improved.

2. The connecting pipe is clamped and fixed through the movement of the conical blocks, the conical blocks on one double-wall pipe extrude two T-shaped blocks on the other double-wall pipe through inclined planes, so that the two T-shaped blocks move, the T-shaped blocks move to drive the arc-shaped blocks to move, the arc-shaped blocks move to drive the arc-shaped clamping blocks to move through the connecting springs, the arc-shaped clamping blocks move to be attached to the connecting pipe, the arc-shaped clamping blocks are further prevented from moving, the arc-shaped blocks continue to move to extrude the spring, the spring generates elastic force, the clamping force of the arc-shaped clamping blocks to the connecting pipe is improved through the elastic force of the spring, and then the connecting pipe is fixed.

3. The sealing effect of the double-wall pipe is improved through the circular ring and the annular groove, the double-wall pipe continues to move to drive the circular ring to move, the circular ring moves into the annular groove of the other double-wall pipe, and the sealing effect of the double-wall pipe is improved.

Drawings

Fig. 1 is a schematic perspective view of a double-wall pipe with ventilation function according to the present utility model;

fig. 2 is a schematic diagram of a partial enlarged structure of a portion a of a double-wall pipe with ventilation function according to the present utility model;

FIG. 3 is a schematic view of a double-walled tube with ventilation function in a partially cross-sectional configuration according to the present utility model;

fig. 4 is a schematic view of a part of a B-site enlarged structure of a double-wall pipe with ventilation function according to the present utility model.

In the figure: 1. an inner tube; 2. an outer tube; 3. a connecting flange; 4. a vent hole; 5. a connecting pipe; 6. an annular groove; 7. t-shaped square blocks; 8. a spring; 9. arc clamping blocks; 10. a square groove; 11. a circular ring; 12. a conical block; 13. square blocks; 14. arc blocks.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.

Referring to fig. 1-4, a double-wall pipe with ventilation function, including inner tube 1, outer tube 2 and flange 3, the outer tube 2 inboard sets up inner tube 1, the equal fixed mounting in outer tube 2 both ends flange 3, and the equal fixed mounting in inner tube 1 both ends is on flange 3, flange 3's design is convenient for the connection use of both arms pipeline, more than two air vents 4 are all offered on two flange 3, the inside grafting of air vent 4 on one flange 3 has connecting pipe 5, the design of air vent 4 and connecting pipe 5 is convenient for evacuate the fuel that leaks in the space between outer tube 2 and inner tube 1, evenly process more than two square grooves 10 on one flange 3, and two T type square blocks 7 of internal symmetry slidable mounting of one of them square groove 10, T type square block 7 one end extends to adjacent square groove 10 inside and welds arc piece 14, T type square block 7 removes and drives arc piece 14 and remove and carry out the centre gripping fixedly to connecting pipe 5.

In the utility model, more than two square blocks 13 are uniformly and fixedly arranged on the other connecting flange 3, the conical blocks 12 are welded at the other ends of the square blocks 13, the conical blocks 12 are designed to facilitate extrusion of two adjacent T-shaped blocks 7, and further the arc-shaped blocks 14 are pushed to move, an annular groove 6 is processed on one connecting flange 3, a circular ring 11 is welded on the other connecting flange 3, the size of the cross section of the circular ring 11 is the same as that of the cross section of the annular groove 6, and the probability of fuel leakage can be effectively reduced due to the design of the annular groove 6 and the circular ring 11.

In particular, the arc-shaped block 14 is welded with the spring 8 near one end of the connecting pipe 5, and the other end of the spring 8 is welded with the arc-shaped clamping block 9, the design of the spring 8 and the arc-shaped clamping block 9 is convenient for clamping and fixing the connecting pipe 5, the other end of the connecting pipe 5 extends to the inside of the outer pipe 2, and one end of the connecting pipe 5 extends to a sealing space between the inner pipe 1 and the outer pipe 2.

Working principle: when two double-wall pipes need to be connected, the two double-wall pipes are connected end to end, the other end of the connecting pipe 5 extends to the position between the inner pipe 1 and the outer pipe 2 of the other double-wall pipe, meanwhile, the conical block 12 on one double-wall pipe extrudes two T-shaped blocks 7 on the other double-wall pipe through the inclined plane, further, the two T-shaped blocks 7 move, the T-shaped blocks 7 move to drive the arc blocks 14 to move, the arc blocks 14 move to drive the arc clamping blocks 9 to move through the connecting springs 8, the arc clamping blocks 9 move to be attached to the connecting pipe 5, further, the arc clamping blocks 9 are prevented from moving to extrude the springs 8, the spring force of the springs 8 is used for improving the clamping force of the arc clamping blocks 9 to the connecting pipe 5, the connecting pipe 5 is further fixed, the double-wall pipe continues to move to drive the circular ring 11 to move, and the circular ring 11 moves into the annular groove 6 of the other double-wall pipe, and the sealing effect of the double-wall pipe is improved.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components.

Claims

1. The utility model provides a double-walled pipe with ventilation function, includes inner tube (1), outer tube (2) and flange (3), outer tube (2) inboard sets up inner tube (1), equal fixed mounting in outer tube (2) both ends has flange (3), and equal fixed mounting in inner tube (1) both ends are on flange (3), its characterized in that, two all offer more than two air vent (4) on flange (3), one of them inside grafting of air vent (4) on flange (3) has connecting pipe (5), one of them evenly offer more than two square grooves (10) on flange (3), and two T type square blocks (7) of one of them square groove (10) inside symmetry slidable mounting, T type square block (7) one end extends to inside adjacent square groove (10) and fixed mounting has arc piece (14).

2. A double-walled pipe with ventilation function according to claim 1 characterized in that two or more square blocks (13) are uniformly and fixedly mounted on the other connecting flange (3), and a conical block (12) is fixedly mounted at the other end of the square block (13).

3. A double-walled pipe with ventilation function according to claim 1 characterized in that one of the connection flanges (3) is provided with an annular groove (6), the other connection flange (3) is fixedly provided with a circular ring (11), and the cross section of the circular ring (11) is the same as the cross section of the annular groove (6).

4. A double-wall pipe with ventilation function according to claim 1, characterized in that the arc-shaped block (14) is fixedly provided with a spring (8) near one end of the connecting pipe (5), and the other end of the spring (8) is fixedly provided with an arc-shaped clamping block (9).

5. A double-walled pipe with ventilation function according to claim 1, characterized in that the other end of the connecting pipe (5) extends into the outer pipe (2).