CN111043518A

CN111043518A - Flexible supporting device for thin-film LNG land storage tank pump pipe

Info

Publication number: CN111043518A
Application number: CN201911069783.8A
Authority: CN
Inventors: 徐岸南; 吴涛; 宋忠兵
Original assignee: Hudong Zhonghua Shipbuilding Group Co Ltd
Current assignee: Hudong Zhonghua Shipbuilding Group Co Ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-04-21

Abstract

The invention discloses a flexible supporting device for a film type LNG land storage tank pump pipe, which comprises a bottom plate, a top plate, embedded pieces, fastening bolts, supporting pieces, a connecting plate, connecting columns and supporting pipes, wherein the embedded pieces are of plate-shaped structures with threaded holes, the embedded pieces are 2 and are pre-embedded in one side, close to an inner tank, of an outer tank, one end of each supporting piece is welded with the bottom plate, the other end of each supporting piece is welded with the top plate, a mounting hole matched with the threaded hole is formed in the bottom plate, the bottom plate is fixed on the outer tank through the fastening bolts, the connecting plate is welded on the top plate, waist holes are vertically formed in the connecting plate, the connecting columns are arranged in the waist holes, one end of each supporting pipe is fixedly connected with the corresponding connecting column, and the other end of each. The invention optimizes the pump tower limit into the pump pipe distributed limit, greatly reduces the manufacturing difficulty and the manufacturing cost, greatly lightens the weight and is convenient for transportation and installation.

Description

Flexible supporting device for thin-film LNG land storage tank pump pipe

Technical Field

The invention belongs to the technical field of liquefied natural gas storage and transportation equipment, and particularly relates to a flexible supporting device for a film type LNG land storage tank pump pipe.

Background

In recent years, with global warming and environmental pollution aggravation, countries around the world begin to accelerate the promotion of low-carbon clean energy policy, and new energy sources, electric power cleaning and low emission of ships of automobiles become new trends of current energy consumption. Natural gas is used as a clean, efficient and energy source with rich storage resources, can be developed and utilized by people for a long time, has a higher proportion in the current world primary energy consumption, is the third largest energy variety next to petroleum and coal, is increased by about 12% every year, is becoming one of the most rapidly developed energy industries in the world, and is in sharp contrast to the fact that the coal proportion in the national energy primary consumption structure is high and reaches 60%; while the proportion of natural gas is only 6.4%, well below the world average level. In the face of the current huge pressure on aspects of energy conservation and emission reduction, insufficient energy supply, environmental protection and the like, the situation of energy structure in China is very severe, and the adjustment is imperative. Therefore, the liquefied natural gas related industry in China must be developed greatly in recent years, and the market prospect is huge. However, since liquefied natural gas is stored and charged at an ultra-low temperature of-163 ℃, LNG land tanks are also constructed on a large scale.

Present LNG land storage tank mainly includes 9 nickel steel holds jar and film tank entirely, and wherein, film type LNG land storage tank is novel technique, and volume utilization rate is high, but the bottom of film tank can not the bearing, can only be integrated as the pump tower with the pump line, fixes at the storage tank top. Because the pump line can take place expend with heat and contract with cold deformation when temperature variation, need guarantee that the whole pump tower can reciprocate when the installation, however, the pump line can bear the stress of horizontal direction when temperature variation, causes the pump line fracture, consequently, need set up and support stop gear, guarantees that the pump tower can only move in vertical direction, and pump tower weight is big, has leaded to the manufacturing and the installation cost of pump tower all very high.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a flexible supporting device for a pump pipe of a film type LNG land storage tank, which can solve the problems of movement and limiting of the pump pipe and limit the movement of the pump pipe in the storage tank in the vertical direction.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a flexible supporting device for a film type LNG land storage tank pump pipe, which comprises a bottom plate, a top plate, embedded parts, fastening bolts, supporting parts, a connecting plate, connecting columns and supporting pipes, wherein the embedded parts are of plate-shaped structures with threaded holes, the embedded parts are arranged in 2 numbers and are pre-embedded at one side of an outer tank close to an inner tank, the supporting parts are of conical hollow structures, one end with a larger cross section of each supporting part is welded with the bottom plate, the other end of each supporting part is welded with the top plate, mounting holes matched with the threaded holes are formed in the bottom plate, the bottom plate is fixed on the outer tank through the fastening bolts, the bottom plate is flush with the side wall of one side of the inner tank, which is connected with the outer tank, the top plate is flush with one side of the inner tank, which is far away from the outer tank, the connecting plate is, the spliced pole set up in the waist is downthehole, the one end of stay tube with spliced pole fixed connection, the other end and pump line fixed connection.

As a preferable technical scheme, the number of the support pipes is 2, the support pipes are a first support pipe and a second support pipe, and the connection point of the first support pipe and the pump pipe is higher than the connection point of the second support pipe and the pump pipe.

The further technical effect is that the first supporting tube, the second supporting tube and the pump tube form a triangular structure, so that the stability of the whole structure is improved.

Preferably, the inner tank is filled with a foam plate, and glass wool is filled between the support member and the foam plate.

The glass wool has the advantages that the sealing performance is guaranteed, the glass wool is prevented from leaking to the outer tank, the safety of the storage tank is improved, and the gas leakage is avoided.

Preferably, the seam between the top plate and the inner tank is located on the outer side of the glass wool.

The glass wool has the further technical effects that the sealing performance of the glass wool is superior to that of a foam board, and the joint is connected with the glass wool, so that gas is prevented from leaking from the joint.

Preferably, the end cap of the fastening bolt is located in the glass wool.

Further technological effect, this kind of structural design is used for avoiding gaseous outer jar by the mounting hole entering, further improves sealed effect.

Preferably, the width-to-height ratio of the waist holes is 1: 2.

As a preferred technical scheme, the outer tank is made of concrete.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention has simple structure and low cost, solves the problems of movement and limit of the pump pipe, ensures that the pump pipe moves along the vertical direction under the action of expansion with heat and contraction with cold, limits the movement of the pump pipe in the horizontal direction through the connecting column and the waist hole, improves the stability of the whole storage tank system and has very high practicability.

(2) The invention optimizes the pump tower limit into the pump pipe distributed limit, greatly reduces the manufacturing difficulty and the manufacturing cost, greatly lightens the weight and is convenient for transportation and installation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the flexible supporting device of the present invention.

Fig. 2 is a view showing a state of use of the flexible supporting device of the present invention.

Wherein the reference numerals are specified as follows: the device comprises a bottom plate 1, a top plate 2, an embedded part 3, a fastening bolt 4, a support part 5, glass wool 6, a foam plate 7, a connecting plate 8, a waist hole 9, a connecting column 10, a first supporting pipe 11, a second supporting pipe 12, a pump pipe 13, an inner tank 14 and an outer tank 15.

Detailed Description

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1 and 2, the present embodiment provides a flexible supporting device for a membrane type LNG land tank pump pipe, which includes a bottom plate 1, a top plate 2, an insert 3, a fastening bolt 4, a supporting member 5, a connecting plate 8, a connecting column 10, and a supporting pipe. Wherein, the inserted part 3 is the platelike structure of threaded hole, and the inserted part 3 sets up to 2 and pre-buried in outer jar 15 near one side of inner tank 14, and outer jar 15 adopts the concrete preparation to form. The supporting piece 5 is a conical hollow structure, one end of the supporting piece 5 with a larger cross section is welded with the bottom plate 1, and the other end is welded with the top plate 2. Be provided with on the bottom plate 1 with screw hole assorted mounting hole, on bottom plate 1 was fixed in outer jar 15 through fastening bolt, the lateral wall of bottom plate 1 and the outer jar 15 one side of inner tank 14 connection flushed, one side that outer jar 15 was kept away from to roof 2 and inner tank 14 flushed, the inside packing of inner tank 14 has cystosepiment 7, it has glass cotton 6 to fill between support piece 5 and the cystosepiment 7, the seam crossing of roof 2 and inner tank 14 is located the outside of glass cotton 6, fastening bolt 4's end cap is located glass cotton 6. The glass wool 6 ensures the sealing performance, avoids leaking and cooling to the outer tank 15, improves the safety of the storage tank and avoids gas leakage.

The connecting plate 8 is welded on the top plate 2, a waist hole 9 is vertically arranged on the connecting plate 8, and the width-to-height ratio of the waist hole 9 is 1: 2. The connecting column 10 is arranged in the waist hole 9, one end of the supporting tube is fixedly connected with the connecting column 10, and the other end of the supporting tube is fixedly connected with the pump tube 13. The connecting column 10 can move in a certain range in the waist hole 9, so that the pump pipe 13 can move in a set range along the vertical direction, the transverse movement of the pump pipe 13 is avoided, and the pump pipe 13 is prevented from receiving the stress in the horizontal direction.

In this embodiment, in order to improve the stability of the overall structure, 2 support pipes are provided, namely the first support pipe 11 and the second support pipe 12, and the connection point of the first support pipe 11 and the pump pipe 13 is higher than the connection point of the second support pipe 12 and the pump pipe 13.

When the device is installed, firstly, the bottom plate 1 and the outer tank 15 are fixed through the fastening bolts 4, then the side wall plate of the inner tank 14 close to one side of the outer tank 15 is installed, the side wall plate is made of wood materials and adhered to the side wall of the outer tank 15, then glass wool 6 and an adhesive foam plate 7 are filled, finally, the side wall plate of the inner tank 14 far away from one side of the outer tank 15 is installed, and the supporting pipe is fixedly connected with the pump pipe 13, so that the installation is completed.

Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.

Claims

1. The flexible supporting device for the film type LNG land storage tank pump pipe is characterized by comprising a bottom plate (1), a top plate (2), embedded pieces (3), fastening bolts (4), supporting pieces (5), a connecting plate (8), a connecting column (10) and a supporting pipe (), wherein the embedded pieces (3) are of plate-shaped structures with threaded holes, the embedded pieces (3) are arranged into 2 and are embedded in one side, close to an inner tank (14), of an outer tank (15), the supporting pieces (5) are of conical hollow structures, one end, with the larger cross section, of each supporting piece (5) is welded with the bottom plate (1), the other end of each supporting piece is welded with the top plate (2), mounting holes matched with the threaded holes are formed in the bottom plate (1), the bottom plate (1) is fixed on the outer tank (15) through the fastening bolts (4), the bottom plate (1) is connected with the inner tank (14), and the side wall of one side, of the outer tank (15) is flush, roof (2) with inner tank (14) are kept away from one side of outer jar (15) flushes, connecting plate (8) weld in on roof (2), vertically on connecting plate (8) be provided with waist hole (9), spliced pole (10) set up in waist hole (9), the one end of stay tube () with spliced pole (10) fixed connection, the other end and pump line (13) fixed connection.

2. The flexible supporting device for a pumping pipe of a membrane-type LNG land tank according to claim 1, wherein the number of the supporting pipes is set to 2, being a first supporting pipe (11) and a second supporting pipe (12), and a connection point of the first supporting pipe (11) to the pumping pipe (13) is higher than a connection point of the second supporting pipe (12) to the pumping pipe (13).

3. The flexible supporting device for the pump pipe of the membrane type LNG land tank according to claim 1, wherein the inner tank (14) is filled with a foam plate (7) at the inside thereof, and glass wool (6) is filled between the supporting member (5) and the foam plate (7).

4. A flexible supporting device for a pump pipe of a membrane type LNG land tank according to claim 3, wherein the seam of the top plate (2) and the inner tank (14) is located outside the glass wool (6).

5. A flexible supporting device for a pump pipe of a membrane-type LNG land tank according to claim 3, characterized in that the end cap of the fastening bolt (4) is located inside the glass wool (6).

6. The flexible supporting device for a pump pipe of a membrane-type LNG land tank according to claim 1, wherein the width-to-height ratio of the kidney hole (9) is 1: 2.

7. The flexible support device for the pump pipe of membrane-type LNG land tank of claim 1, wherein the outer tank (15) is made of concrete.