CN219975780U

CN219975780U - LNG pipeline vacuumizing embedded component

Info

Publication number: CN219975780U
Application number: CN202321713920.9U
Authority: CN
Inventors: 郭建勇; 徐蕊; 杨默
Original assignee: Changchun Gas Thermal Design And Research Institute Co ltd
Current assignee: Changchun Gas Thermal Design And Research Institute Co ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2023-11-07
Anticipated expiration: 2033-07-03

Abstract

The utility model provides an LNG pipeline vacuumizing embedded component, which comprises a pipe trench, wherein fine sand is filled in the pipe trench to form a fine sand layer, a vacuum pipe is arranged in the fine sand layer, a pipe trench cover plate is arranged above the fine sand layer, and a hardened pavement is poured on the pipe trench cover plate; the vacuum tube comprises an inner wall and an outer wall, a cavity is arranged between the inner wall and the outer wall, a vacuumizing port is arranged on the inner wall, and the vacuumizing port is vertically connected with the outer wall and is communicated with the cavity between the inner wall and the outer wall. The outer wall of the vacuum tube is sleeved with a member, the member is connected with the outer wall through a sealing ring, the vacuumizing port is positioned in the member, the member penetrates through the pipe ditch cover plate and exposes out of the ground, the top of the member is provided with a bearing well cover, and the bearing well cover is connected with the member in a water-proof manner through taper tube threads. The utility model relates to the technical field of fuel gas, in particular to an LNG pipeline vacuumizing embedded component which can finish vacuumizing operation on the premise of not damaging the ground and a cover plate and has simple, efficient and safe operation process.

Description

LNG pipeline vacuumizing embedded component

Technical Field

The utility model relates to the technical field of fuel gas, in particular to an LNG pipeline vacuumizing embedded component.

Background

The LNG vacuum tube is a common tube in the LNG field station, and has the advantages that: the heat insulating layer and the radiation-proof layer are arranged between the inner pipe and the outer pipe, and the vacuum state is kept between the inner pipe and the outer pipe, so that the effects of heat conduction, heat convection and heat radiation are effectively blocked, and the evaporation loss of low-temperature liquid in the flowing process is controlled within the minimum range. However, the pipeline needs to be vacuumized every 2-3 years to keep the vacuum state of the pipeline. The LNG pipelines in the established station are mostly arranged in the pipe ditches, and the pipe ditches need to be filled with sand. A pipe trench cover plate and a hardened pavement are arranged above the pipe trench. Each vacuum pumping operation needs to destroy the hardened pavement and remove the pipe ditch cover plate, and the vacuum pipe vacuum pumping joint is connected with a vacuum pumping device so as to perform the vacuum pumping operation. After the vacuuming operation is completed, the pipe ditch cover plate is covered, and then the hardened pavement is paved again. This operation has the following drawbacks: 1. during operation, the LNG pipeline cannot normally operate, and normal production in a station can be influenced; 2. the hardened pavement in the station is damaged, and the operation cost is increased; 3. the fine sand in the pipe ditch is excavated again, and certain potential safety hazards exist.

Disclosure of Invention

In view of the above, the utility model aims to provide an LNG pipeline vacuumizing embedded component which can complete vacuumizing operation on the premise of not damaging the ground and a cover plate. The operation process is simple, efficient and safe. Is suitable for all stations using LNG vacuum pipelines.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the LNG pipeline vacuumizing embedded component comprises a pipe trench, wherein fine sand is filled in the pipe trench to form a fine sand layer, a vacuum pipe is arranged in the fine sand layer, a pipe trench cover plate is arranged above the fine sand layer, and a hardened pavement is poured on the pipe trench cover plate;

the vacuum tube comprises an inner wall and an outer wall, a cavity is formed between the inner wall and the outer wall, a vacuumizing port is formed in the inner wall, the vacuumizing port is vertically connected with the outer wall and communicated with the cavity between the inner wall and the outer wall, a member is sleeved on the outer wall of the vacuum tube, the member is connected with the outer wall through a sealing ring, the vacuumizing port is located in the member, a hole allowing the member to pass through is formed in a pipe ditch cover plate, the member passes through the hole in the pipe ditch cover plate to expose the ground, part of the member is poured with a hardened pavement, a bearing well cover is arranged at the top of the member, and taper pipe threads are used for waterproof connection between the bearing well cover and the member.

Further, the member comprises a long tube and a transverse tube, wherein the middle of the transverse tube is vertically fixed with the long tube into a whole, and the transverse tube is communicated with the long tube;

the horizontal pipe is connected with the outer wall through the sealing ring, the top of the long pipe is connected with the bearing well cover, and part of the long pipe is poured with the hardened pavement.

Further, the vacuumizing port is positioned in the long tube and at the bottom of the long tube, and the geometric center of the vacuumizing port and the geometric center of the long tube are positioned on the same central line.

Compared with the prior art, the utility model has the following advantages:

according to the LNG pipeline vacuumizing embedded component, the pipeline vacuumizing operation can be completed by arranging the component to be matched with the disassembly and assembly of the bearing well lid, so that the pavement is not damaged, the production is not influenced, and the vacuumizing operation can be efficiently and quickly completed; the bearing well lid is connected with the components through taper pipe threads so as to achieve the bearing and waterproof effects; the utility model has low production cost, much higher income than investment, can improve the vacuumizing operation efficiency by only using simple pre-buried components, also prevents the pavement of the factory from being repeatedly damaged, has wide application range and is suitable for all places using LNG vacuum pipelines.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is an overall schematic diagram of an LNG pipeline vacuumizing pre-buried member according to an embodiment of the present utility model;

fig. 2 is a front cross-sectional view of an LNG pipeline vacuumizing pre-buried member according to an embodiment of the present utility model;

FIG. 3 is a side cross-sectional view of an LNG pipeline vacuumizing embedded member according to an embodiment of the utility model;

reference numerals illustrate:

1. a fine sand layer; 2. a vacuum tube; 201. an inner wall; 202. an outer wall; 3. a vacuum pumping port; 4. a trench cover plate; 5. hardening the road surface; 6. a member; 601. a long tube; 602. a transverse tube; 7. and a bearing well cover.

Description of the embodiments

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The embodiment relates to an LNG pipeline vacuumizing embedded component, which can finish vacuumizing operation on the premise of not damaging the ground and a cover plate. The operation process is simple, efficient and safe. Is suitable for all stations using LNG vacuum pipelines.

Based on the design concept described above, an exemplary structure of the LNG pipeline vacuumizing pre-buried member according to this embodiment is shown in fig. 1, and mainly includes a pipe trench, in which fine sand is filled to form a fine sand layer 1, a vacuum tube 2 is installed in the fine sand layer 1, a pipe trench cover plate 4 is installed above the fine sand layer 1, and a hardened pavement 5 is poured on the pipe trench cover plate 4; the vacuum tube 2 comprises an inner wall 201 and an outer wall 202, a cavity is arranged between the inner wall 201 and the outer wall 202, a vacuumizing port 3 is arranged on the inner wall 201, the vacuumizing port 3 is vertically connected with the outer wall 202 and is communicated with the cavity between the inner wall 201 and the outer wall 202, a member 6 is sleeved on the outer wall 202 of the vacuum tube 2, the member 6 is connected with the outer wall 202 through a sealing ring so as to be convenient for sealing and waterproof, the vacuumizing port 3 is positioned in the member 6, a hole through which the member 6 can pass is formed in the pipe cover plate 4, the member 6 passes through the hole in the pipe cover plate 4 to expose the ground, part of the member 6 is poured with the hardened pavement 5, a bearing well cover 7 is arranged at the top of the member 6, and taper pipe threaded connection is adopted between the bearing well cover 7 and the member 6 so as to achieve the waterproof effect.

Specifically, the member 6 comprises a long tube 601 and a transverse tube 602, the middle of the transverse tube 602 is vertically fixed with the long tube 601 into a whole, a sealing ring is arranged at the joint of the transverse tube 602 and the long tube 601, and the transverse tube 602 is communicated with the long tube 601; the transverse pipe 602 is connected with the outer wall 202 through a sealing ring to achieve the sealing effect, the top of the long pipe 601 is connected with the bearing well cover 7, and part of the long pipe 601 is poured with the hardened pavement 5.

The vacuumizing port 3 is positioned in the long tube 601 and at the bottom of the long tube 601, and the geometric center of the vacuumizing port 3 and the geometric center of the long tube 601 are positioned on the same central line.

Specifically, the member 6 is an embedded member, can be prefabricated into a finished product, and can be directly installed after reaching a working site without additional processing.

When the LNG pipeline vacuumizing embedded component is used, the bearing well cover 7 is opened, and the vacuumizing port 3 on the vacuum pipe 2 is connected with vacuumizing equipment to perform vacuumizing operation. After the operation is completed, the bearing well cover 7 is reset and screwed.

The LNG pipeline vacuumizing embedded component adopting the embodiment well realizes the efficient and rapid vacuumizing operation on the premise of not damaging the pavement and not influencing the production; the utility model has low production cost, much higher income than investment, can improve the vacuumizing operation efficiency by only matching the simple pre-buried member 6 with the bearing well cover 7, also prevents the pavement of the factory from being repeatedly damaged, has wide application range and is suitable for all places using LNG vacuum pipelines.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides an LNG pipeline evacuation pre-buried component, includes the trench, the trench is filled with fine sand and forms fine sand layer (1), install vacuum tube (2) in fine sand layer (1), pipe trench cover (4) are installed to fine sand layer (1) top, pour on pipe trench cover (4) and harden road surface (5);

the vacuum tube (2) comprises an inner wall (201) and an outer wall (202), a cavity is formed between the inner wall (201) and the outer wall (202), a vacuumizing port (3) is formed in the inner wall (201), and the vacuumizing port (3) is vertically connected with the outer wall (202) and is communicated with the cavity between the inner wall (201) and the outer wall (202), and the vacuum tube is characterized in that:

the vacuum tube is characterized in that a member (6) is sleeved on the outer wall (202) of the vacuum tube (2), the member (6) is connected with the outer wall (202) through a sealing ring, the vacuumizing port (3) is located in the member (6), a hole through which the member (6) passes is formed in the trench cover plate (4), the member (6) passes through the hole in the trench cover plate (4) to expose the ground, part of the member (6) is poured with the hardened pavement (5), a bearing well cover (7) is arranged at the top of the member (6), and the bearing well cover (7) is connected with the member (6) through taper pipe threads in a waterproof mode.

2. The LNG pipeline evacuation pre-buried member according to claim 1, wherein: the member (6) comprises a long tube (601) and a transverse tube (602), wherein the middle of the transverse tube (602) is vertically fixed with the long tube (601) into a whole, and the transverse tube (602) is communicated with the long tube (601);

the horizontal pipe (602) is connected with the outer wall (202) through the sealing ring, the top of the long pipe (601) is connected with the bearing well cover (7), and part of the long pipe (601) is poured with the hardened pavement (5).

3. The LNG pipeline evacuation pre-buried member according to claim 2, wherein: the vacuumizing port (3) is positioned in the long tube (601) and at the bottom of the long tube (601), and the geometric center of the vacuumizing port (3) and the geometric center of the long tube (601) are positioned on the same central line.