CN210464174U - Flow direction reversing device of air temperature type vaporizer - Google Patents
Flow direction reversing device of air temperature type vaporizer Download PDFInfo
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- CN210464174U CN210464174U CN201921438585.XU CN201921438585U CN210464174U CN 210464174 U CN210464174 U CN 210464174U CN 201921438585 U CN201921438585 U CN 201921438585U CN 210464174 U CN210464174 U CN 210464174U
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Abstract
The utility model relates to a vaporization equipment technical field discloses a flow direction switching device of air temperature formula vaporizer, including feed liquor pipe, outlet duct, first collector, second collector, third collector, fourth collector, first valve, second valve, third valve, fourth valve, fifth valve, sixth valve, seventh valve and eighth valve, a plurality of lower connecting pipes. The multiple valves are switched and matched for use, the gas-liquid flow direction of the vaporizer finned tube combination is switched, supercooling ice accretion outside the finned tube is continuously heated by superheated gas in the tube, the temperature rises continuously, even the ice accretion begins to melt, and the ice accretion becomes very easy to clear when the next alternation period is reached. The problem of air temperature formula vaporizer inefficiency is solved to the accumulated ice on the finned tube of air temperature formula vaporizer finned tube feed liquor side difficult elimination, difficult clearance.
Description
Technical Field
The utility model relates to a vaporization equipment technical field, more specifically say, relate to a flow direction switching device of air temperature formula vaporizer.
Background
An air-temperature vaporizer is a device in which a low-temperature liquid gas is heated in a vaporizer (also referred to as a vaporizer) until it is vaporized, and it uses a flow of air to heat the low-temperature liquid gas in finned tubes of the air-temperature vaporizer, thereby converting a liquid into a gas. At present, after the existing air temperature type vaporizer operates at a large flow rate for a long time, the phenomenon of frost and ice formation on the surface of a finned tube is serious, particularly, the thickness and the temperature of the ice layer on the finned tube at the liquid inlet side are low, the ice accumulation is difficult to remove, the ice accumulation can be eliminated for a long time, the vaporizer is endangered to operate safely after the ice accumulation is continuously increased, and a user has to set a plurality of groups of vaporizers for alternate use. There are many methods and devices for defrosting and deicing, such as manual knocking, hot air blowing, hot water or steam spraying, electric heating, additional coating, etc., but all have limitations. Therefore, how to solve the problem that the use efficiency of the air temperature type vaporizer is low due to the fact that accumulated ice on the finned tube on the liquid inlet side of the finned tube of the air temperature type vaporizer is difficult to eliminate and difficult to clean in the prior art becomes a technical problem which needs to be solved urgently by a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flow direction switching device of empty temperature formula vaporizer is in order to solve the long-pending ice on the finned tube of the empty temperature formula vaporizer finned tube feed liquor side that exists among the prior art and be difficult to eliminate, and difficult clearance leads to the problem that empty temperature formula vaporizer availability factor hangs down. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
The utility model provides a flow direction switching device of air temperature formula vaporizer, include:
the liquid inlet pipe is communicated with an external liquid supply pipe, and the gas outlet pipe is communicated with an external gas pipe;
the first collecting pipe, the second collecting pipe, the third collecting pipe and the fourth collecting pipe are arranged in parallel, one end of each of the first collecting pipe, the second collecting pipe, the third collecting pipe and the fourth collecting pipe is communicated with the liquid inlet pipe, and the other end of each of the first collecting pipe, the second collecting pipe, the third collecting pipe and the fourth collecting pipe is communicated with the gas outlet pipe;
a first valve, a fourth valve, a fifth valve and an eighth valve, wherein the first valve and the fourth valve are respectively arranged at the position of the first collecting pipe and the fourth collecting pipe close to the liquid inlet pipe, and the eighth valve and the fifth valve are respectively arranged at the position of the first collecting pipe and the fourth collecting pipe close to the gas outlet pipe;
the second valve and the third valve are respectively arranged at the position of the second collecting pipe and the third collecting pipe close to the liquid inlet pipe, and the seventh valve and the sixth valve are respectively arranged at the position of the second collecting pipe and the third collecting pipe close to the gas outlet pipe;
and the first header, the second header, the third header and the fourth header are all provided with a plurality of lower connecting pipes, the lower connecting pipes are used for being connected with the external evaporator finned tube vertical array, the first header and the second header are positioned on one side of the external evaporator finned tube vertical array, the third header and the fourth header are positioned on the other opposite side of the evaporator finned tube vertical array, and the first header, the second header, the third header and the fourth header are positioned on the lower part of the evaporator finned tube vertical array.
The utility model provides a flow direction switching device of air temperature formula vaporizer among the technical scheme, including feed liquor pipe, outlet duct, first collector, second collector, third collector, fourth collector, first valve, second valve, third valve, fourth valve, fifth valve, sixth valve, seventh valve and eighth valve, lower connecting pipe. When the vaporizer is used, the flow direction is switched by opening different valves, for example, the first collecting pipe and the fourth collecting pipe are connected with a plurality of vertical fin tube combinations through the lower connecting pipes, one end of each vertical fin tube combination is connected with the first collecting pipe, the other end of each vertical fin tube combination is connected with the fourth collecting pipe, the first valve and the fifth valve are opened, the fourth valve and the eighth valve are closed, low-temperature liquid gas flows into the vertical fin tube combinations from the first valve and then flows into the gas outlet pipe through the fifth valve, the side, connected with the first collecting pipe, of the vertical fin tube combination is the liquid inlet side, the side connected with the fourth collecting pipe is the gas outlet side, after the vaporizer works for a specified time, the vaporizer needs to stop running to defrost and deice, before the device is put into operation again, the first valve and the fifth valve are closed, the fourth valve and the eighth valve are opened, low-temperature liquid gas flows into the vertical finned tube combination from the fourth valve and then flows into the gas outlet pipe through the eighth valve, at the moment, one side of the vertical finned tube combination connected with the fourth collecting pipe is a liquid inlet side, and one side connected with the first collecting pipe is a gas outlet side. Similarly, the second manifold and the third manifold as well as the second manifold and the third manifold can realize the reversal of the gas-liquid flow direction of the finned tubes through valve switching. So set up, solved the problem that the accumulated ice on the finned tube of prior art cavity warm type vaporizer feed liquor side is difficult to eliminate, difficult clearance leads to air warm type vaporizer availability factor to hang down.
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 these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flow direction reversing device of an air-temperature vaporizer according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a flow direction reversing device of an air-temperature vaporizer according to an embodiment of the present invention.
In FIGS. 1-2:
1-liquid inlet pipe, 2-gas outlet pipe, 3-first header, 4-second header, 5-third header, 6-fourth header, 7-first valve, 8-second valve, 9-third valve, 10-fourth valve, 11-fifth valve, 12-sixth valve, 13-seventh valve, 14-eighth valve, 15-first vertical finned tube combination, 16-second vertical finned tube combination, 17-lower connecting pipe, 18-external liquid supply pipe, 19-external gas pipe and 20-vaporizer vertical finned tube array.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
An object of the present invention is to provide a flow direction reversing device for an air temperature vaporizer, which solves the problem of low utilization efficiency of the air temperature vaporizer due to the difficulty in removing ice accumulated on the finned tube at the liquid inlet side of the finned tube of the air temperature vaporizer and the difficulty in cleaning the finned tube in the prior art.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.
Referring to fig. 1-2, in the present embodiment, a liquid inlet pipe 1 and a gas outlet pipe 2 are disposed in parallel, an external liquid supply pipe 18 is connected to the middle of the liquid inlet pipe 1, an external gas pipe 19 is connected to the middle of the gas outlet pipe 2, and low-temperature liquid gas in the external liquid supply pipe 18 flows from the middle of the liquid inlet pipe 1 to both ends in two directions after entering the liquid inlet pipe 1.
As shown in fig. 2, the first header 3 and the second header 4 are provided on one side of the external liquid supply pipe 18 and the external air pipe 19, and the third header 5 and the fourth header 6 are provided on the other side of the external liquid supply pipe 18 and the external air pipe 19, with the position of the external liquid supply pipe 18 and the external air pipe 19 as a boundary.
Specifically, one end of the liquid inlet pipe 1 is connected with a first valve 7 and a second valve 8, the other end is connected with a third valve 9 and a fourth valve 10, and the middle part is connected with an external liquid supply pipe 18; one end of the air outlet pipe 2 is connected with a fifth valve 11 and a sixth valve 12, the other end is connected with a seventh valve 13 and an eighth valve 14, and the middle part is connected with an external air pipe 19. The first valve 7 and the eighth valve 14 are connected by a first manifold 3, the second valve 8 and the seventh valve 13 are connected by a second manifold 4, the third valve 9 and the sixth valve 12 are connected by a third manifold 5, and the fourth valve 10 and the fifth valve 11 are connected by a fourth manifold 6. That is, the first header 3 is communicated with the liquid inlet pipe 1 through the first valve 7 and communicated with the gas outlet pipe 2 through the eighth valve 14, and similarly, other headers are also communicated with the liquid inlet pipe 1 and the gas outlet pipe 2 through corresponding valves.
As shown in fig. 1 and 2, an external vaporizer fin tube vertical array 20 is connected through a lower connection pipe 17, the external vaporizer fin tube vertical array 20 is used for vaporization, and the external vaporizer fin tube vertical array 20 includes an external first vertical fin tube assembly 15 and an external second vertical fin tube assembly 16. Since the first header 3 is provided with a plurality of lower connection tubes 17, a plurality of sets of first finned tube combinations 15 or a plurality of sets of second finned tube combinations 16 may be connected to the first header 3, and the other ends of the first finned tube combinations 15 or the second finned tube combinations 16 may be connected to any one of the second header 4, the third header 5 and the fourth header 6. The second header 4, the third header 5 and the fourth header 6 are the same. As shown in fig. 1, the lower connection pipe 17 is inserted into a connection port of the external vaporizer fin tube vertical array 20, or is fitted to the connection port of the external vaporizer fin tube vertical array 20. The number and position of the lower connecting tubes 17 are adjusted according to the actual process flow of the vertical array of vaporizer finned tubes 20.
As shown in fig. 1, the lower connection pipe 17 is for connection to an external evaporator fin tube vertical array 20, the first header 3, the second header 4 are located on one side of the external evaporator fin tube vertical array 20, the third header 5, the fourth header 6 are located on the opposite side of the evaporator fin tube vertical array 20, and the first header 3, the second header 4, the third header 5, and the fourth header 6 are located in the lower portion of the evaporator fin tube vertical array 20.
Specifically, in the present embodiment, the first header 3 and the fourth header 6 are connected to a plurality of sets of external second vertical fin-tube combinations 16 through a plurality of lower connection tubes 17, the second header 4 and the third header 5 are connected to a plurality of sets of external first vertical fin-tube combinations 15 through a plurality of lower connection tubes 17, and the first vertical fin-tube combinations 15 and the second vertical fin-tube combinations 16 are arranged at intervals, that is, as shown in fig. 2, in a direction from bottom to top on a paper surface, odd rows are formed by the external first vertical fin-tube combinations 15, and even rows are formed by the external second vertical fin-tube combinations 16. Of course, in other embodiments, the outer first vertical fin-tube combination 15 and the outer second vertical fin-tube combination 16 may not be arranged at intervals, for example, the first vertical fin-tube combination 15 is arranged at the side close to the liquid inlet pipe 1, and the second vertical fin-tube combination 16 is arranged at the side close to the gas outlet pipe 2. It should be noted that the first valve 7, the second valve 8, the third valve 9, and the fourth valve 10 are all disposed at positions closer to the liquid inlet pipe 1 relative to the lower connection pipes 17, and the fifth valve 11, the sixth valve 12, the seventh valve 13, and the eighth valve 14 are all disposed at positions closer to the gas outlet pipe 2 relative to the lower connection pipes 17, so as to ensure that the liquid low-temperature gas first passes through the valves to achieve the effect of reversing the flow direction.
In use, the second valve 8, the fourth valve 10, the sixth valve 12 and the eighth valve 14 are simultaneously opened, and the first valve 7, the third valve 9, the fifth valve 11 and the seventh valve 13 are simultaneously closed. At this time, the low-temperature liquid gas passes through the liquid inlet pipe 1, one path of the low-temperature liquid gas passes through the second valve 8, the second header 4, the lower connecting pipes 17, the first vertical fin tube combinations 15, the lower connecting pipes 17, the third header 5 and the sixth valve 12, the other path of the low-temperature liquid gas passes through the fourth valve 10, the fourth header 6, the lower connecting pipes 17, the second vertical fin tube combinations 16, the lower connecting pipes 17, the first header 3 and the eighth valve 14, the vaporized gas is converged to the gas outlet pipe 2, and then the low-temperature liquid gas is sent out through the external gas pipe 19 in the middle of the gas outlet pipe 2. After the vaporizer works for a set time, the vaporizer needs to be rotated to standby equipment, operation is stopped, defrosting and deicing work is carried out (generally, the duration lasts for 16-24 hours, frost layers on the finned tubes close to the gas outlet side are easy to remove, and frost layer accumulated ice on the finned tubes close to the liquid inlet side is difficult to remove), if the accumulated ice on the finned tubes at the liquid inlet side of the vaporizer is still serious before the vaporizer is put into work again, the first valve 7, the third valve 9, the fifth valve 11 and the seventh valve 13 can be opened simultaneously, and the second valve 8, the fourth valve 10, the sixth valve 12 and the eighth valve 14 are closed simultaneously. At this time, the low-temperature liquid gas passes through the liquid inlet pipe 1, one path of the low-temperature liquid gas passes through the first valve 7, the first header 3, the lower connecting pipes 17, the second vertical fin tube combinations 16, the lower connecting pipes 17, the fourth header 6 and the fifth valve 11, the other path of the low-temperature liquid gas passes through the third valve 9, the third header 5, the lower connecting pipes 17, the first vertical fin tube combinations 15, the lower connecting pipes 17, the second header 4 and the seventh valve 13, the vaporized gas is converged to the gas outlet pipe 2, and then the low-temperature liquid gas is sent out through the external gas pipe 19 in the middle of the gas outlet pipe 2. Thus, when the flow direction reversing device of the air temperature type vaporizer is put into operation for the first time, the left end of the first vertical finned tube assembly 15 is a liquid inlet side, the right end of the first vertical finned tube assembly is a gas outlet side, the right end of the second vertical finned tube assembly 16 is a liquid inlet side, and the left end of the second vertical finned tube assembly 16 is a gas outlet side. The original liquid inlet side finned tube with ice accumulation is changed into the original gas outlet side finned tube, the original finned tube on the gas outlet side without ice accumulation is changed into the liquid inlet side finned tube, the gas-liquid flow directions in each group of the first vertical finned tube combination 15 and each group of the second vertical finned tube combination 16 are reversed, in the vaporization process, the original finned tube on one side with ice accumulation is continuously heated by gas in the tube, the temperature is continuously increased and even begins to melt, and the problems that in the prior art, low-temperature liquid gas always enters the finned tube from one side, the ice accumulation is serious and the ice accumulation is difficult to eliminate are solved.
And the second valve 8, the fourth valve 10, the sixth valve 12 and the eighth valve 14 are opened simultaneously, so that the low-temperature liquid gas entering the liquid inlet pipe 1 flows along two directions, the flow of one circulation is increased, and the working efficiency is improved. Of course, in other embodiments, the first valve 7, the second valve 8, the fifth valve 11 and the sixth valve 12 may be opened simultaneously. The low-temperature liquid gas entering the liquid inlet pipe 1 can enter the first vertical finned tube assembly 15 in one way and enter the second vertical finned tube assembly 16 in the other way.
The utility model discloses a defrosting deicing principle is: the accumulated ice temperature on the liquid inlet side finned tube of the vertical finned tube combination of the air-temperature vaporizer is very low, and is usually lower than-20 ℃, and the outlet gas temperature of the air-temperature vaporizer is usually higher than 0 ℃, and the air-temperature vaporizer and the outlet gas temperature have a very large temperature difference.
By the arrangement, the gas-liquid flow direction of the vaporizer finned tube combination is reversed, the supercooling ice accumulation outside the finned tube is continuously heated by the superheated gas inside the tube, the temperature of the supercooling ice accumulation continuously rises, even the supercooling ice accumulation starts to melt, and the ice accumulation is very easy to clear when the next alternation period is reached. The problem of the prior art on the finned tube of cavity warm type vaporizer finned tube feed liquor side the long-pending ice is difficult to eliminate, difficult clearance leads to the low availability factor of air warm type vaporizer is solved.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The utility model provides a plurality of schemes contain the basic scheme of itself, mutual independence to restrict each other, but it also can combine each other under the condition of not conflicting, reaches a plurality of effects and realizes jointly.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. A flow direction reversing device of an air temperature type vaporizer is characterized by comprising:
the liquid inlet pipe (1) is communicated with an external liquid supply pipe (18), and the gas outlet pipe (2) is communicated with an external gas pipe (19);
a first collecting pipe (3), a second collecting pipe (4), a third collecting pipe (5) and a fourth collecting pipe (6) which are arranged in parallel, wherein one end of each of the first collecting pipe (3), the second collecting pipe (4), the third collecting pipe (5) and the fourth collecting pipe (6) is communicated with the liquid inlet pipe (1), and the other end of each of the first collecting pipe, the second collecting pipe (4), the third collecting pipe (5) and the fourth collecting pipe (6) is communicated with the gas outlet pipe (2);
a first valve (7), a fourth valve (10), a fifth valve (11) and an eighth valve (14), wherein the first valve (7) and the fourth valve (10) are respectively arranged at the position of the first manifold (3) and the fourth manifold (6) close to the liquid inlet pipe (1), and the eighth valve (14) and the fifth valve (11) are respectively arranged at the position of the first manifold (3) and the fourth manifold (6) close to the gas outlet pipe (2);
a second valve (8), a third valve (9), a sixth valve (12) and a seventh valve (13), wherein the second valve (8) and the third valve (9) are respectively arranged at the position of the second collecting pipe (4) and the third collecting pipe (5) close to the liquid inlet pipe (1), and the seventh valve (13) and the sixth valve (12) are respectively arranged at the position of the second collecting pipe (4) and the third collecting pipe (5) close to the gas outlet pipe (2);
a plurality of lower connecting pipes (17) are arranged on the first header (3), the second header (4), the third header (5) and the fourth header (6), the lower connecting pipes (17) are connected with an external vaporizer fin tube vertical array (20), the first header (3) and the second header (4) are positioned on one side of the external vaporizer fin tube vertical array (20), the third header (5) and the fourth header (6) are positioned on the opposite side of the external vaporizer fin tube vertical array (20), and the first header (3), the second header (4), the third header (5) and the fourth header (6) are positioned on the lower part of the external vaporizer fin tube vertical array (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921438585.XU CN210464174U (en) | 2019-08-30 | 2019-08-30 | Flow direction reversing device of air temperature type vaporizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921438585.XU CN210464174U (en) | 2019-08-30 | 2019-08-30 | Flow direction reversing device of air temperature type vaporizer |
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| CN210464174U true CN210464174U (en) | 2020-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631392A (en) * | 2019-10-08 | 2019-12-31 | 唐伟明 | Novel air-temperature vaporizer |
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2019
- 2019-08-30 CN CN201921438585.XU patent/CN210464174U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631392A (en) * | 2019-10-08 | 2019-12-31 | 唐伟明 | Novel air-temperature vaporizer |
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