Novel vaporizer heat exchange device for LNG

Abstract

The utility model belongs to the technical field of natural gas wharf gasification devices, and provides a novel vaporizer heat exchange device for LNG (Liquefied Natural Gas). The utility model relates to a novel vaporizer heat exchange device for LNG (Liquefied Natural Gas), which comprises a connecting group pipe, a plurality of heat exchange tubes, a plurality of heat exchange tubes and a plurality of heat exchange tubes, wherein the connecting group pipe comprises a liquid inlet pipe and a gas outlet pipe; the air outlet pipe is provided with a throat pipe section; the gasification piece comprises a mounting cavity, a floater block and a spray pipe; wherein the mounting cavity is provided with an inner cavity and an inlet section, the floater block is located in the inner cavity, and the inlet section is communicated with the liquid inlet pipe; one end of the spray pipe is communicated with the mounting cavity, and the other end of the spray pipe is communicated with the air outlet pipe and extends into the throat pipe section; and the liquid pump is arranged on the connecting group pipe and is positioned at the liquid inlet pipe. The device is reasonable in design and easy to operate, vaporization of liquefied natural gas can be achieved, the vaporization efficiency is improved by adopting a two-time heating mode, and the requirement for transmission of a small LNG ship is met.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas terminal gasification devices, in particular to a new type of vaporizer heat exchange device for LNG. Background Art

[0002] LNG liquefaction ships are mostly used to transport liquefied natural gas. Usually, LNG liquefaction ships require special docks with pipelines and gasification equipment on them. The gasification equipment is used to gasify liquefied natural gas. However, there are many existing equipment and the pipelines are complicated. This is not applicable to small LNG liquefaction ships.

[0003] Therefore, in order to solve such a problem, we propose a vaporizer heat exchange device to solve the problem. Utility Model Content

[0004] In view of the defects in the prior art, the utility model provides a novel vaporizer heat exchange device for LNG, which is suitable for small LNG liquefaction ships.

[0005] In the first aspect, the utility model provides a new type of vaporizer heat exchange device for LNG, comprising: a connecting pipe group, the connecting pipe group comprising a liquid inlet pipe and an air outlet pipe; the air outlet pipe is provided with a throat section; a chain reaction plate is provided in the liquid inlet pipe; a gasification component, the gasification component comprises a mounting cavity, a float block and a nozzle; wherein the mounting cavity is provided with an inner cavity and an inlet section, the float block is located in the inner cavity, and the inlet section is communicated with the liquid inlet pipe; one end of the nozzle is communicated with the mounting cavity, and the other end of the nozzle is communicated with the air outlet pipe and extends into the throat section; and a liquid pump, the liquid pump is installed on the connecting pipe group and is located at the liquid inlet pipe.

[0006] Furthermore, it also includes: a plate heating element; the plate heating element is made of an electric heating tube, and one end of the plate heating element is connected to the liquid inlet pipe, and the other end of the plate heating element is connected to the inlet section. In actual use, this design is to achieve heating and liquefaction, and the original liquid natural gas is preliminarily heated to accelerate its vaporization. At the same time, the plate heating element of this design can achieve the heating effect by connecting it to an external power source, which is extremely convenient and applicable.

[0007] Furthermore, the gasification component further includes a needle valve, which is arranged at the inlet section. In actual use, this design is used to convert the continuous inflow of liquefied natural gas into intermittent outflow, and on the other hand, the output valve stem of the needle valve is also convenient for abutting against the float block to achieve its up and down fluctuation in the inner cavity.

[0008] Furthermore, the gasification component further comprises a throttle valve, which is rotatably mounted at the outlet pipe and is located in a direction away from the throat section. In actual use, this design can play a regulating role.

[0009] Furthermore, the vaporizer also includes a connecting spring, and the connecting spring is arranged in the inner cavity at least at one place and connected to the surface of the float block. In actual use, the purpose of this design is to facilitate the float block to reciprocate up and down in the inner cavity. The actual installation position is mainly the area between the bottom surface of the float block and the inner cavity wall. In this way, when the float block is abutted by the valve stem of the needle valve, it will be pressed down. At this time, under the action of pressure, the liquid in the inner cavity can be sprayed out from the nozzle, which is convenient for subsequent vaporization work.

[0010] Furthermore, it also includes an air intake preheating pipe, which is made of electric heating material, and one end of which is connected to the air outlet pipe. In actual use, the purpose of this design is to heat the vaporized natural gas to facilitate its further vaporization.

[0011] Furthermore, it also includes an external connection pipe, one end of which is connected to the other end of the intake preheating pipe, and the other end of which is connected to an external gas storage device. This design is to facilitate the storage of gasified natural gas.

[0012] Furthermore, the throat section has an air intake constriction portion and an expansion nozzle portion. In actual use, the purpose of this design is to form a jet pressure airflow to facilitate the gasification of liquid natural gas.

[0013] It can be seen from the above technical solution that the utility model provides a novel vaporizer heat exchange device for LNG with the following beneficial effects:

[0014] (1) In actual use, the device is conveniently connected to the LNG liquefaction ship through the connecting pipe group; this can improve convenience;

[0015] (2) At the same time, on the other hand, the gasification component used can achieve gasification by connecting the gasification component with the connecting group pipe; the gasification component uses the principle of using the jet pressure airflow to gasify the relative flow of liquid. Such a design is reasonable and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for the specific implementation or the prior art description. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1A schematic front view of a novel vaporizer heat exchange device for LNG provided in one embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a novel vaporizer heat exchange device for LNG provided in one embodiment of the utility model;

[0019] Figure 3 A schematic structural diagram of a plate-type heating element in a novel vaporizer heat exchange device for LNG provided in one embodiment of the utility model;

[0020] Figure 4 It is a schematic front view of the heating plate in the plate-type heating element of the utility model.

[0021] Reference numerals:

[0022] Connecting group pipe 1, liquid inlet pipe 11, chain reaction plate 101, air outlet pipe 12, throat section 121, air intake constriction 1211, expansion nozzle 1212, gasification component 2, installation cavity 21, float block 22, nozzle 23, inner cavity 211, inlet section 212, needle valve 24, throttle 25, connecting spring 26, liquid pump 3, plate heating component 4, heating plate 41, outer shell 42, air intake preheating pipe 5, external connection pipe 6. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0024] The embodiment is basically as shown in the attached Figures 1 to 4 As shown:

[0025] Embodiment 1:

[0026] like Figure 1-4 As shown, the novel vaporizer heat exchange device for LNG provided in this embodiment can be applicable to small LNG liquefaction ships.

[0027] In the first aspect, the utility model provides a new type of vaporizer heat exchange device for LNG, comprising: a connecting pipe group 1, the connecting pipe group 1 comprising a liquid inlet pipe 11 and an air outlet pipe 12; a chain reaction plate 101 is provided in the liquid inlet pipe 11; the air outlet pipe 12 is provided with a throat section 121; a vaporizer 2, the vaporizer 2 comprising a mounting cavity 21, a float block 22 and a nozzle 23; wherein the mounting cavity 21 is provided with an inner cavity 211 and an inlet section 212, the float block 22 is located in the inner cavity 211, and the inlet section 212 is communicated with the liquid inlet pipe 11; one end of the nozzle 23 is communicated with the mounting cavity 21, and the other end of the nozzle 23 is communicated with the air outlet pipe 12 and extends into the throat section 121; and a liquid pump 3, the liquid pump 3 is installed on the connecting pipe group 1 and is located at the liquid inlet pipe 11. In actual use, the device is conveniently connected to the LNG liquefaction ship through the connecting pipe group 1; in this way, the convenience can be improved; at the same time, on the other hand, the gasification component 2 used can achieve gasification by connecting the gasification component 2 with the connecting pipe group 1; the gasification component 2 adopts the principle of using the jet pressure airflow to gasify the relative flow of liquid. Such a design is reasonable and easy to operate.

[0028] In this embodiment, it also includes: a plate heating element 4; the plate heating element 4 is made of an electric heating tube, and one end of the plate heating element 4 is connected to the liquid inlet pipe 11, and the other end of the plate heating element 4 is connected to the inlet section 212. In actual use, this design is to achieve heating and liquefaction, and the original liquid natural gas is preliminarily heated to accelerate its vaporization. At the same time, the plate heating element 4 of this design is powered by an external power supply to achieve a heating effect, which is extremely convenient and applicable. The plate heating element 4 includes a heating plate 41 and a shell 42.

[0029] In this embodiment, the gasification component 2 further includes a needle valve 24, which is disposed at the inlet section 212. In actual use, this design is used to convert the continuous inflow of liquefied natural gas into intermittent outflow, and on the other hand, the output valve stem of the needle valve 24 is also convenient for abutting against the float block 22, so as to achieve its up and down fluctuation in the inner cavity 211.

[0030] In this embodiment, the gasification component 2 further includes a throttle 25, which is rotatably mounted on the outlet pipe 12 and is located in a direction away from the throat section 121. In actual use, this design can play a regulating role.

[0031] In this embodiment, the vaporizer 2 further includes a connecting spring 26, and the connecting spring 26 is arranged in the inner cavity 211 at least at one place and connected to the surface of the float block 22. In actual use, the purpose of this design is to facilitate the float block 22 to reciprocate up and down in the inner cavity 211. The actual installation position is mainly the area between the bottom surface of the float block 22 and the wall of the inner cavity 211. In this way, when the float block 22 is abutted by the valve stem of the needle valve 24, it will be pressed down. At this time, under the action of pressure, the liquid in the inner cavity 211 can be sprayed out from the nozzle 23, which is convenient for subsequent vaporization work.

[0032] In this embodiment, an air intake preheating pipe 5 is also included, and the air intake preheating pipe 5 is made of electric heating material, and one end of the air intake preheating pipe 5 is connected to the air outlet pipe 12. In actual use, the purpose of this design is to heat the vaporized natural gas to facilitate its further vaporization.

[0033] In this embodiment, an external connection pipe 6 is also included, one end of which is connected to the other end of the intake preheating pipe 5, and the other end of the external connection pipe 6 is communicated with an external gas storage device. This design is to facilitate the storage of gasified natural gas.

[0034] In this embodiment, the throat section 121 has an air intake constriction portion 1211 and an expansion nozzle portion 1212. In actual use, the purpose of this design is to form a jet pressure airflow to facilitate the gasification of liquid natural gas.

[0035] In summary, this new type of vaporizer heat exchanger for LNG is not only reasonably designed but also easy to operate. It can realize the vaporization of liquid natural gas and adopts a double heating method, which effectively improves the vaporization efficiency and effectively meets the transmission needs of small LNG ships. Therefore, it is suitable for industry promotion.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A new type of vaporizer heat exchange device for LNG, characterized in that: include: A connecting pipe group, the connecting pipe group includes a liquid inlet pipe and an air outlet pipe; the air outlet pipe is provided with a throat section; the liquid inlet pipe is provided with a chain reaction plate; A gasification component, the gasification component comprises a mounting cavity, a float block and a nozzle; wherein the mounting cavity is provided with an inner cavity and an inlet section, the float block is located in the inner cavity, and the inlet section is communicated with the liquid inlet pipe; one end of the nozzle is communicated with the mounting cavity, and the other end of the nozzle is communicated with the air outlet pipe and extends into the throat section; and A liquid pump is installed on the connecting pipe group and is located at the liquid inlet pipe.

2. A novel vaporizer heat exchange device for LNG according to claim 1, characterized in that: Also includes: Plate heating element; The plate-type heating element is made of an electric heating tube, and one end of the plate-type heating element is connected to the liquid inlet pipe, and the other end of the plate-type heating element is connected to the inlet section.

3. A novel vaporizer heat exchange device for LNG according to claim 1, characterized in that: The gasification component further includes a needle valve, which is arranged at the inlet section.

4. A novel vaporizer heat exchange device for LNG according to claim 1, characterized in that: The gasification component further comprises a throttle valve, which is rotatably mounted on the air outlet pipe and is located in a direction away from the throat section.

5. A novel vaporizer heat exchange device for LNG according to claim 1, characterized in that: The gasification component further includes a connecting spring, and the connecting spring is arranged in the inner cavity at least at one place and connected to the surface of the float block.

6. A novel vaporizer heat exchange device for LNG according to claim 1, characterized in that: It also includes an air intake preheating pipe, which is made of electric heating material, and one end of the air intake preheating pipe is connected to the air outlet pipe.

7. A novel vaporizer heat exchange device for LNG according to claim 6, characterized in that: It also includes an external connection pipe, one end of which is connected to the other end of the intake preheating pipe, and the other end of the external connection pipe is communicated with an external gas storage device.

8. A novel vaporizer heat exchange device for LNG according to claim 1, characterized in that: The throat section has an air intake constriction portion and an expansion nozzle portion.

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