CN212548318U

CN212548318U - Central guide cylinder

Info

Publication number: CN212548318U
Application number: CN202021011487.0U
Authority: CN
Inventors: 钱彬
Original assignee: Wuxi Qianwei Chemical Equipment Co ltd
Current assignee: Wuxi Qianwei Chemical Equipment Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-02-19
Anticipated expiration: 2030-06-04

Abstract

The utility model discloses a central draft tube, it can improve the heat exchange efficiency of heat exchanger, and it includes the barrel, and the barrel is fixed in the casing of vaporizer, is provided with water inlet, outlet on the casing, and in the circulating water got into the casing along the water inlet, the vaporizer included the heat exchange tube, and the barrel includes the open manger plate portion in top, is located the water conservancy diversion portion of manger plate portion bottom, and the water conservancy diversion portion is the toper, and the heat exchange tube distributes along the barrel periphery, and the cone angle of water conservancy diversion portion is corresponding with the circulating water direction of intaking downwards.

Description

Central guide cylinder

Technical Field

The utility model relates to an environmental protection equipment technical field specifically is a central draft tube.

Background

The gasifier is a device for heating liquid gas until the liquid gas is gasified into gas, the currently commonly used gasifier comprises a steam heating gasifier, a hot water bath gasifier, a natural ventilation airspace gasifier and the like, wherein the water bath gasifier is a gasifier using water as a heat medium and comprises a shell, a heat exchanger is arranged in the shell, the heat exchanger comprises a heat exchange pipe and circulating water for heating, the circulating water enters the shell along a water inlet at the bottom of the shell and is discharged along a water outlet at the top of the shell, the circulating water is hot water and is heated along the shell, the liquid gas in the heat exchange pipe is gasified into gas under the heating action of the circulating water, but the gasifier in the prior art has the problem of low gasification efficiency, the water flow speed of a region without the heat exchange pipe in the shell is high, and the water flow speed is low due to the blocking of the heat exchange pipe, in the water circulation process, hot water is easily and rapidly discharged along the area without the heat exchange tube, so that the contact time of the hot water and the heat exchange tube is short, and the problem of low heat exchange efficiency exists.

SUMMERY OF THE UTILITY MODEL

To the problem that heat exchanger heat exchange efficiency is low in the gasifier that exists among the prior art, the utility model provides a central draft tube, it can improve the heat exchange efficiency of heat exchanger.

The utility model provides a central draft tube, its includes the barrel, the barrel is fixed in the casing of gasifier, be provided with water inlet, outlet on the casing, the circulating water is followed the water inlet gets into in the casing, the gasifier includes the heat exchange tube, its characterized in that, the barrel includes the open water retaining portion in top, is located the water retaining portion water conservancy diversion portion of bottom, water conservancy diversion portion is the toper, the heat exchange tube is followed the periphery of barrel distributes, the cone angle of water conservancy diversion portion downwards with the circulating water direction of intaking corresponds.

The heat exchange tube is further characterized in that the heat exchange tube comprises a coil tube and tube arrays, the coil tube comprises an upper coil tube and a lower coil tube which are respectively positioned at the upper part and the lower part of the shell, the tube arrays are positioned between the upper coil tube and the lower coil tube and are respectively communicated with the upper coil tube and the lower coil tube, and the tube arrays are circumferentially distributed along the outer side of the barrel body, so that the barrel body is positioned in a cavity among the upper coil tube, the lower coil tube and the tube arrays;

the upper coil pipe, the lower coil pipe and the tube array respectively comprise at least two layers, the heat exchange tube further comprises an air outlet pipe and a liquid inlet pipe which are respectively communicated with the upper coil pipe and the lower coil pipe, the liquid inlet pipe is positioned at the lower part of the shell and penetrates through one side end of the shell to be communicated with an external conveying pipeline, and the air outlet pipe is positioned at the upper part of the shell and penetrates through an end enclosure of the shell to be communicated with the outside;

a circular through hole is formed in the conical angle position of the bottom end of the flow guide part; when circulating water enters the shell along the water inlet, a small amount of water enters the cylinder along the circular through hole at the bottom end of the flow guide part, so that the impact of the circulating water on the bottom end of the flow guide part can be relieved;

the barrel passes through the angle steel to be fixed in the casing, the angle steel includes four, four the angle steel is located respectively upper portion, the lower part of barrel, and respectively with barrel, casing welding.

Adopt the utility model discloses above-mentioned structure can reach following beneficial effect: the circulating water flows into the shell along the water inlet and then is guided by the conical guide part, so that the circulating water flows through the tubes for heat exchange, hot water is fully contacted with the heat exchange tubes and then is discharged along the water outlet, and therefore the hot water and the heat exchange tubes are sufficient, and the heat exchange efficiency is greatly improved.

Drawings

Fig. 1 is a schematic structural view of the draft tube of the present invention;

fig. 2 is a schematic view of the gasifier according to the present invention.

Detailed Description

Referring to fig. 1 and 2, a central draft tube comprises a tube body 1, wherein the tube body 1 is fixed in a shell 2 of a gasifier, a water inlet 3 and a water outlet 4 are formed in the shell 2, circulating water enters the shell 2 along the water inlet, the gasifier comprises a heat exchange tube, the tube body 1 comprises a water retaining part 11 with an open top and a draft part 12 located at the bottom end of the water retaining part 11, the draft part 12 is conical, the heat exchange tube is distributed along the periphery of the tube body, and the cone angle of the draft part 12 corresponds to the water inlet direction of the circulating water downwards.

The heat exchange tubes comprise coil pipes and tube arrays 5, the coil pipes comprise upper coil pipes 51 and lower coil pipes 52 which are respectively positioned at the upper part and the lower part of the shell 2, the tube arrays 5 are positioned between the upper coil pipes 51 and the lower coil pipes 52 and are communicated with the upper coil pipes 51 and the lower coil pipes 52, and the tube arrays 5 are circumferentially distributed along the outer side of the barrel body 1, so that the barrel body 1 is positioned in a cavity between the upper coil pipes 51, the lower coil pipes 52 and the tube arrays 5;

the upper coil pipe 51, the lower coil pipe 52 and the tube array 5 comprise two layers, the heat exchange tube further comprises an air outlet pipe 53 and a liquid inlet pipe 54 which are respectively communicated with the upper coil pipe 51 and the lower coil pipe 52, the liquid inlet pipe 54 is positioned at the lower part of the shell 1 and penetrates through one side end of the shell 1 to be communicated with an external conveying pipeline, and the air outlet pipe 53 is positioned at the upper part of the shell 1 and penetrates through a seal head of the shell 1 to be communicated with the outside; liquid gas enters the lower coil 52 through the liquid inlet pipe 54, is heated and gasified into gas through the tubes 5 and the upper coil 51 in sequence, and is discharged along the gas outlet pipe 53;

a circular through hole is formed at the cone angle of the bottom end of the flow guide part 12; when circulating water enters the shell along the water inlet 3, a small amount of water enters the cylinder along the circular through hole 13 at the bottom end of the flow guide part 12, so that the impact of the circulating water on the bottom end of the flow guide part can be relieved;

the cylinder body 1 is fixed in the shell 2 through four angle steels, and the four angle steels are respectively positioned on the upper part and the lower part of the cylinder body 1 and are respectively welded with the cylinder body 1 and the shell 8.

Because the bottom of the diversion part 12 is conical, circulating water can be divided along the circumferential direction of the bottom end of the diversion part 12 after entering the shell 2 along the water inlet 3, so that the circulating water firstly rises along the cavity between the barrel 1 and the shell 2 and then enters the barrel 1 from the opening at the top of the barrel, the tube array 5 is positioned in the cavity between the barrel 1 and the shell 2, therefore, the circulating water entering the shell 2 firstly flows through the tube array 5 for heat exchange, hot water is fully contacted with the heat exchange tube and then is discharged along the water outlet 4, therefore, the effective contact area of the hot water and the heat exchange tube can be increased, the heat exchange efficiency is greatly improved, when the circulating water enters the shell 2 along the water inlet 3, the temperature is 80 ℃, the circulating water is guided by the central diversion cylinder of the application and is subjected to heat exchange by the heat exchange tube, the temperature is reduced to 60 ℃, namely, the temperature of the water discharged from the water outlet is, the temperature of the water discharged from the water outlet is about 70 ℃, so that the heat exchange efficiency can be greatly improved by adopting the guide cylinder structure under the conditions of the same circulating water inlet temperature, the same water flow speed and the like.

What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above embodiments. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and scope of the present invention are to be considered as included within the scope of the present invention.

Claims

1. The utility model provides a central draft tube, its includes the barrel, the barrel is fixed in the casing of gasifier, be provided with water inlet, outlet on the casing, the circulating water is followed the water inlet gets into in the casing, the gasifier includes the heat exchange tube, its characterized in that, the barrel includes the open water retaining portion in top, is located the water retaining portion water conservancy diversion portion of bottom, water conservancy diversion portion is the toper, the heat exchange tube is followed the periphery of barrel distributes, the cone angle of water conservancy diversion portion downwards with the circulating water direction of intaking corresponds.

2. The central guide shell according to claim 1, wherein the heat exchange tubes comprise a coil and a tube array, the coil comprises an upper coil and a lower coil which are respectively positioned at the upper part and the lower part of the shell, the tube array is positioned between the upper coil and the lower coil and is communicated with the upper coil and the lower coil, and the tube array is circumferentially distributed along the outer side of the cylinder body, so that the cylinder body is positioned in a cavity between the upper coil, the lower coil and the tube array.

3. The central guide shell according to claim 2, wherein the upper coil, the lower coil and the tube array each comprise at least two layers, and the heat exchange tube further comprises an air outlet tube and a liquid inlet tube which are respectively communicated with the upper coil and the lower coil.

4. The central guide shell according to claim 1, wherein the bottom cone of the guide part is provided with a circular through hole.

5. The central guide shell according to claim 1, wherein the cylinder is fixed in the shell through four angle steels, and the four angle steels are respectively located at the upper part and the lower part of the cylinder and are respectively welded with the cylinder and the shell.