CN115837170B - Radial flow cold trap - Google Patents
Radial flow cold trapInfo
- Publication number
- CN115837170B CN115837170B CN202210151232.1A CN202210151232A CN115837170B CN 115837170 B CN115837170 B CN 115837170B CN 202210151232 A CN202210151232 A CN 202210151232A CN 115837170 B CN115837170 B CN 115837170B
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- CN
- China
- Prior art keywords
- heat exchange
- end plate
- shell
- tubes
- cold trap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D8/00—Cold traps; Cold baffles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
本公开提供了一种径向流冷阱，其包括壳体、换热组件、分流岐管组、集流岐管组及集气管。壳体具有敞口端，其内设有相对设置的第一端板和第二端板，第一端板和第二端板的中心连线形成第一中心线，且第一中心线与壳体中轴线平行或重合。换热组件设于壳体内，换热组件包括多组并联的换热管束，换热管束包括多个串联的换热管，且多个换热管的轴线相对于第一中心线呈放射状对称布置。该径向流冷阱的结构使进到壳体内的气流从第一端板和第二端板所围空间的四周进入并沿径向向内的方向流动，可凝性的蒸汽在换热管表面凝华，不可凝气体汇集到集气管中并被抽出，能够解决现有技术中冷阱占用空间大，换热面积利用率低，易产生冰堵和气流阻力大的技术问题。
The present disclosure provides a radial flow cold trap, which includes a shell, a heat exchange assembly, a flow manifold group, a flow collection manifold group, and an air collecting pipe. The shell has an open end, and is provided with a first end plate and a second end plate disposed opposite each other. The center line connecting the first end plate and the second end plate forms a first center line, and the first center line is parallel to or coincides with the central axis of the shell. The heat exchange assembly is disposed within the shell, and the heat exchange assembly includes multiple groups of parallel heat exchange tube bundles, and the heat exchange tube bundles include multiple heat exchange tubes connected in series, and the axes of the multiple heat exchange tubes are arranged radially and symmetrically with respect to the first center line. The structure of the radial flow cold trap allows the airflow entering the shell to enter from all sides of the space enclosed by the first end plate and the second end plate and flow in a radially inward direction. Condensable vapor condenses on the surface of the heat exchange tube, and non-condensable gas is collected in the air collecting pipe and extracted. This can solve the technical problems of the prior art that cold traps occupy a large space, have low heat exchange area utilization, are prone to ice blockage, and have high airflow resistance.
Description
Technical Field
The invention relates to a cold trap, in particular to a radial flow cold trap.
Background
The cold trap, also called a steam trap, is a heat exchange device that uses a low-temperature surface to sublimate a gas with a low saturated steam pressure, such as steam, in a vacuum environment for trapping. Cold traps are widely used in vacuum freeze-drying apparatus, edible oil deodorization apparatus, fatty acid fractionation apparatus, and petrochemical industry.
The cold trap has mainly coil pipe type (including spiral coil pipe and S-shaped coil pipe), tube array type and plate type. Among them, the tube type cold trap is widely used in large and medium-sized steam trapping devices due to low cost, convenient processing and maintenance, and the like.
The heat exchange tubes in the shell and tube cold trap are generally equidistantly arranged for processing convenience, and adjacent heat exchange tubes are arranged in a regular triangle or rectangle mode, namely every three adjacent heat exchange tubes in two rows of heat exchange tubes are arranged in a regular triangle or every four adjacent heat exchange tubes are arranged in a rectangle. This arrangement suffers from the following disadvantages:
(1) The surface of the cold trap at the inlet end of the air flow is large in ice formation amount, and ice blockage is easy to generate at the inlet end. To ensure a smooth air flow passage, the tube distance is required to be arranged according to the thickness of the ice layer at the inlet end, so that the tube distance is large, and the cold trap occupies large space and is high in cost.
(2) The inlet side gas stream of the cold trap contains a large amount of steam, and as the steam is gradually trapped in the flow process, the steam content in the outlet side gas stream is small, and for the example of a vacuum freeze drying process, the flow rate of the inlet side gas stream is usually hundreds times that of the outlet side gas stream. The sectional area of the air flow channel of the existing cold trap is basically the same along the flowing direction, so that the resistance of the air flow at the inlet end is large, and the space of the air flow channel at the outlet end is wasted greatly.
(3) Current cold trap configurations have an optimal path for minimizing flow resistance of the gas stream from the inlet end to the outlet end, which is generally in the middle of the cold trap. The steam flow near the path is large, the trapping amount is also large, the trapping amount is smaller along the longer distance of the periphery of the path, the heat exchange of the cold trap is uneven, and the heat exchange area utilization rate is low.
Disclosure of Invention
The radial cold-flow trap has compact structural design, can reduce occupied space, and can solve the technical problems of low heat exchange area utilization rate, easy ice blockage generation and large air flow resistance in the prior art.
Embodiments of the present disclosure provide a radial flow cold trap comprising:
The shell is provided with an open end and a central axis penetrating through the open end, a first end plate and a second end plate which are oppositely arranged are arranged in the shell, the plate surfaces of the first end plate and the second end plate are perpendicular to the central axis of the shell, a first central line is formed by connecting the centers of the first end plate and the second end plate, and the first central line is parallel to or coincides with the central axis of the shell;
The heat exchange assembly is arranged in the shell and comprises a plurality of groups of heat exchange tube bundles, the heat exchange tube bundles comprise a plurality of heat exchange tubes connected in series, two ends of each heat exchange tube respectively penetrate through the first end plate and the second end plate, the axes of the heat exchange tubes are parallel to the first central line, the axes of the plurality of heat exchange tubes are radially and symmetrically arranged relative to the first central line, and the heat exchange assembly is used for desublimating condensable gas in the shell;
The split manifold group is arranged in the shell and connected with the inlet of the heat exchange assembly, and is used for supplying heat exchange medium to the heat exchange tubes of the heat exchange assembly;
the collecting manifold group is arranged in the shell and connected with the outlet of the heat exchange assembly, and is used for discharging heat exchange medium in the heat exchange tube of the heat exchange assembly;
The axis of the gas collecting tube is arranged on the first central line, one end of the gas collecting tube is arranged between the first end plate and the second end plate, the other end of the gas collecting tube penetrates through the second end plate to be communicated with the vacuum pump, and a plurality of air inlet holes are formed in the tube wall of the gas collecting tube, so that the gas in the shell flows through the heat exchange assembly in the radial direction, and the noncondensable gas is pumped to the gas collecting tube through the air inlet holes and is discharged by the vacuum pump.
In some embodiments, the number of heat exchange tube bundles is 2M groups, M is an integer between 6 and 32, and the plurality of groups of heat exchange tube bundles are symmetrically arranged with respect to the first centerline.
In some embodiments, the plurality of groups of heat exchange tube bundles includes two sections symmetrically disposed about a vertical plane passing through the first centerline, each section including M groups of heat exchange tube bundles.
In some embodiments, each group of the heat exchange tube bundles includes 2N heat exchange tubes, N is an integer between 4 and 24, the 2N heat exchange tubes are divided into two portions symmetrically arranged up and down along a horizontal plane passing through the first center line, each portion includes N heat exchange tubes, the N heat exchange tubes are arranged radially outward with respect to the first center line, and ends of adjacent heat exchange tubes of each group of the heat exchange tube bundles are communicated through bends.
In some embodiments, the heat exchange tubes are configured as round metal tubes, adjacent heat exchange tubes are connected by bends, or
The heat exchange tube is constructed as a ring-shaped fin tube or a spiral-shaped fin tube.
In some embodiments, the heat exchange tubes are configured as U-shaped tubes, adjacent heat exchange tubes being in communication via bends.
In some embodiments, the housing comprises a cylindrical body, the open end is located at a first end of the cylindrical body, a second end of the cylindrical body is connected to a closure head or flange, and an axis of the cylindrical body is configured as the housing central axis.
In some embodiments, the first end plate and the second end plate are square plates, through holes matched with the heat exchange tubes are formed in the first end plate and the second end plate, through holes matched with the gas collecting tubes are formed in the second end plate, and the second end plate is far away from the open end relative to the first end plate.
In some embodiments, the split manifold group comprises a manifold support, and a liquid inlet manifold, a liquid separator and a liquid separating branch pipe which are sequentially connected, wherein the liquid separating branch pipe is connected with an inlet of the heat exchange assembly, and a heat exchange medium inlet communicated with the liquid inlet manifold is arranged on the shell.
In some embodiments, the collecting manifold group comprises a collecting branch pipe, a collecting header and a collecting header pipe which are sequentially connected, wherein the collecting branch pipe is connected with an outlet of the heat exchange assembly, and a heat exchange medium outlet communicated with the collecting header pipe is arranged on the shell.
Compared with the prior art, the heat exchange device has the beneficial effects that through the heat exchange tubes arranged between the two end plates and the gas collecting tube with the axes being radially arranged relative to the first central line and the gas collecting tube with the axes being coincident with the first central line, and through the vacuum pump, the non-condensable gas in the shell is pumped out through the gas collecting tube, so that the gas flow containing steam flows inwards approximately along the radial direction in the radial flow cold trap from the periphery of the space surrounded by the two end plates, the gas flow containing steam can not form ice blockage at the inlet side of the heat exchange assembly, the flow channel is short and has no deflection, the flow resistance is small, the heat exchange is uniform, no dead angle with unsmooth steam circulation exists in the heat exchange assembly, the heat exchange area is fully utilized, the gas capturing efficiency is high, and the energy consumption can be saved. The application has compact structural design, the space between adjacent heat exchange tubes of each group of heat exchange tube bundles can be small, so that the space occupied by the radial flow cold trap is small, and the technical problems of low heat exchange area utilization rate, easy ice blockage generation and large airflow resistance in the prior art can be solved.
Drawings
In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive of the present apparatus or method.
FIG. 1 is a cross-sectional view of a radial flow cold trap of an embodiment of the present disclosure;
FIG. 2 is a side view of a radial flow cold trap of an embodiment of the present disclosure;
FIG. 3 is an isometric schematic view of a partial structure of a radial flow cold trap in accordance with an embodiment of the present disclosure;
fig. 4 is a schematic structural view of a heat exchange assembly of a radial flow cold trap according to an embodiment of the present disclosure.
The reference numerals in the drawings denote components:
1-shell, 11-open end, 12-first end plate, 13-second end plate, 14-heat exchange medium inlet, 15-heat exchange medium outlet, 16-end socket, 17-supporting beam, 2-heat exchange component, 21-heat exchange tube, 22-elbow, 3-split manifold group, 31-liquid inlet manifold, 32-separator, 33-split manifold, 34-manifold support, 4-collector manifold group, 41-collector manifold, 42-collector manifold, 43-collector manifold, 5-collector tube, 51-air inlet, 6-heat exchange support, 7-shell bracket and 8-reinforcing rib.
Detailed Description
In order to better understand the technical solutions of the present disclosure, the following detailed description of the present disclosure is provided with reference to the accompanying drawings and the specific embodiments. Embodiments of the present disclosure will be described in further detail below with reference to the drawings and specific embodiments, but not by way of limitation of the present disclosure.
The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In this disclosure, when a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device. When it is described that a particular device is connected to other devices, the particular device may be directly connected to the other devices without intervening devices, or may be directly connected to the other devices without intervening devices.
All terms (including technical or scientific terms) used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
The disclosed embodiments provide a radial flow cold trap, as shown in fig. 1-4, comprising a housing 1, a heat exchange assembly 2, a split manifold 3, a collector manifold 4, and a header 5. The shell 1 is provided with an open end 11 and a central axis penetrating through the open end 11, a first end plate 12 and a second end plate 13 which are oppositely arranged are arranged in the shell 1, the plate surfaces of the first end plate 12 and the second end plate 13 are perpendicular to the central axis, a connecting line of the center of the first end plate 12 and the center of the second end plate 13 forms a first central line 1-1, and the first central line coincides with the central axis of the shell. The heat exchange assembly 2 is arranged in the shell 1, the heat exchange assembly 2 comprises a plurality of groups of heat exchange tube bundles, each heat exchange tube bundle comprises a plurality of heat exchange tubes 21 connected in series, the axes of the heat exchange tubes 21 are parallel to the first central line, two ends of the heat exchange tubes 21 respectively penetrate through the first end plate 12 and the second end plate 13, and the heat exchange assembly 2 is used for desublimating condensable gas in the shell 1. The split manifold group 3 is arranged in the shell 1 and is connected with an inlet of the heat exchange assembly 2, and is used for supplying heat exchange medium to the heat exchange tubes 21 of the heat exchange assembly 2. The manifold group 4 is disposed in the housing 1 and connected to the outlet of the heat exchange assembly 2, and is used for discharging the heat exchange medium in the heat exchange tube 21 of the heat exchange assembly 2. The gas collecting tube 5 is arranged in the shell 1, the axis of the gas collecting tube is arranged on the first central line, a plurality of gas inlet holes 51 are formed in the tube wall of the gas collecting tube 5, one end of the gas collecting tube 5 is arranged between the first end plate and the second end plate, the other end of the gas collecting tube passes through the second end plate and is communicated with the vacuum pump, so that gas in the shell 1 radially flows through the heat exchange assembly 2, and non-condensable gas is pumped to the gas collecting tube 5 through the gas inlet holes 51 and is discharged by the vacuum pump.
Specifically, the arrow direction shown in fig. 1 is the flow direction of the gas, the housing 1 is in sealed communication with the chamber to be dried through the open end 11 thereof, the radial flow cold trap is used for trapping the condensable gas for the chamber to be dried, the vacuum pump connected with the radial flow cold trap is positioned at the exhaust port of the radial flow cold trap, and the chamber to be dried is positioned at the air inlet port of the radial flow cold trap. The shell 1 may be cylindrical, the outer wall of the shell 1 may be provided with reinforcing ribs 8, and the bottom of the shell 1 may be provided with a shell bracket 7.
Specifically, the heat exchange supporting member 6 for supporting the heat exchange assembly 2 may be disposed in the housing 1, and a plurality of heat exchange tube bundles may be disposed in parallel, where each heat exchange tube bundle is connected to the manifold group 3 and the manifold group 4 respectively. The heat exchange medium enters the heat exchange assembly 2 through the branch manifold group 3 and flows to the collecting manifold group 4 through the heat exchange assembly 2, wherein the heat exchange medium can be ammonia, carbon dioxide or freon refrigerant, or low-temperature secondary refrigerant such as glycol solution, calcium chloride solution or sodium chloride solution.
After the heat exchange medium enters the heat exchange assembly 2, the heat exchange medium flows through the heat exchange tubes 21 sequentially from outside to inside and then from inside to outside, heat generated by the desublimation of steam on the outer surfaces of the heat exchange tubes 21 is absorbed, the heat exchange medium is heated or evaporated, and returned liquid or returned air is collected into the collecting manifold group 4 and returned to the heat exchange medium heat exchange unit or the refrigerating unit.
The gas collecting tube 5 of the radial flow cold trap is connected with a vacuum pump through a pipeline, under the suction action of the vacuum pump, gas with high steam content and relatively high pressure from the gas inlet port of the shell 1 enters from a gas inlet channel surrounded by the first end plate 12 and the second end plate 13, and flows to the middle part of the radial flow cold trap with lower pressure approximately along the radial inward direction, and in the process, most steam is sublimated on the outer surface of the heat exchange tube 21 because the outer surface temperature of the heat exchange tube 21 is lower than the steam saturation temperature corresponding to the gas pressure, and the rest small amount of steam and non-condensable gas are collected in the gas collecting tube 5, pumped out through the vacuum pump and discharged into the atmosphere.
In some embodiments, the gas collecting tube 5 may be a circular tube, the axis of which coincides with the first central line, the periphery of the gas collecting tube 5 is provided with a plurality of evenly arranged circular holes, one end of the gas collecting tube 5 forms a closed gas inlet and is positioned between the first end plate 12 and the second end plate 13, and the other end passes through the second end plate 13 and then is connected with a vacuum pump arranged outside the radial cold trap through a pipeline. The gas collecting pipe 5 is used for collecting non-condensable gas, pumping the non-condensable gas through a vacuum pump and discharging the non-condensable gas to the atmosphere.
In some embodiments, as shown in fig. 1 to 4, the number of heat exchange tube bundles is 2M groups, M is an integer between 6 and 32, and a plurality of groups of the heat exchange tube bundles are symmetrically arranged with respect to the first center line.
In some embodiments, as shown in fig. 1-4, the plurality of groups of heat exchange tube bundles includes two sections symmetrically disposed about a vertical plane passing through the first centerline, each section including M groups of heat exchange tube bundles.
Specifically, the heat exchange tube bundles shown in fig. 3 are 28 groups, and the 28 groups of heat exchange tube bundles are arranged in parallel, and each of the two sections is arranged in bilateral symmetry with respect to a vertical plane passing through the first center line, and each section includes 14 groups of heat exchange tube bundles.
In some embodiments, as shown in fig. 1 to 4, each group of the heat exchange tube bundle includes 2N heat exchange tubes 21, N is an integer between 4 and 24, and 2N heat exchange tubes 21 are divided into two parts symmetrically arranged up and down along a horizontal plane passing through the first center line, each part includes N heat exchange tubes 21, and N heat exchange tubes 21 are radially arranged outward with respect to the first center line, and ends of adjacent heat exchange tubes 21 of each group of the heat exchange tube bundle are communicated through an elbow 22.
Specifically, each group of heat exchange tube bundles includes 28 heat exchange tubes 21, divided into two portions arranged symmetrically up and down with respect to a horizontal plane passing through the first center line, each portion including 14 heat exchange tubes 21. The axes of the heat exchange tubes 21 are horizontally arranged, and the ends of the adjacent heat exchange tubes 21 of each group of heat exchange tube bundles are communicated through 180-degree elbows 22, so that 28 heat exchange tubes 21 form a series structure.
The flow direction of the heat exchange medium in each group of heat exchange tube bundles is from the outside to the inside along the radial direction and then from the inside to the outside along the radial direction, and the included angles formed between the flow directions of the inlets or the outlets of the adjacent heat exchange tube bundles are equal. Specifically, referring to fig. 4, the group of heat exchange tube bundles closest to the horizontal plane passing through the first center line is set as 1 st group, the adjacent group of heat exchange tube bundles is set as 2 nd group, and so on, 14 groups are shown in fig. 4, and the flow direction of the heat exchange medium inlet 14 and the flow direction of the heat exchange medium outlet 15 in the heat exchange tube bundles of the m th group (m=1 to 14) form an angle ofWhere M is the serial number of the heat exchanger bundle group (m= 1~M), M is half the number of heat exchanger bundles, and in some embodiments, m=14 as shown in fig. 4.
In some embodiments, as shown in FIG. 3, the heat exchange tubes 21 are constructed as round metal tubes, adjacent heat exchange tubes 21 are connected by bends 22, or the heat exchange tubes 21 are constructed as annular fin tubes or spiral fin tubes.
In some embodiments, the heat exchange tubes 21 are configured as U-shaped tubes, and adjacent heat exchange tubes 21 are in communication via bends 22.
In some embodiments, as shown in fig. 1 and 2, the housing 1 includes a cylindrical body, the open end 11 is located at a first end of the cylindrical body, a second end of the cylindrical body is connected with a closure head 16, and an axis of the cylindrical body is configured as the housing central axis.
In some embodiments, as shown in fig. 1 to 3, the first end plate 12 and the second end plate 13 are square plates, through holes adapted to the heat exchange tubes 21 are formed in the first end plate 12 and the second end plate 13, through holes adapted to the gas collecting tubes 5 are further formed in the second end plate 13, and the second end plate 13 is far away from the open end 11 relative to the first end plate 12.
Specifically, the first end plate 12 and the second end plate 13 are square flat plates with edges folded at the periphery, and a plurality of through holes are formed in the flat plates, and the size and the number of the through holes are matched with those of the heat exchange tubes 21. The center of the second end plate 13 is also provided with a through hole matched with the gas collecting tube 5. The line connecting the centers of the first end plate 12 and the second end plate 13 constitutes a first center line, which coincides with the housing center line.
Specifically, the first end plate 12 and the second end plate 13 are arranged vertically and in parallel on both sides of the heat exchange tube bundle, and the circumferences of the first end plate 12 and the second end plate 13 are connected by a plurality of support beams 17. The first end plate 12 and the second end plate 13 support the heat exchange tube 21, and the space surrounded by the peripheries of the first end plate 12 and the second end plate 13 forms an intake passage from which the steam-containing gas from the intake port enters and flows inward substantially in the radial direction of the casing 1.
The first end plate 12 and the second end plate 13 are square flat plates, and the purpose of the non-circular flat plates is to avoid the problem that the heat exchange tubes 21 near the middle of the heat exchange assembly 2 are too dense to be distributed.
In some embodiments, as shown in fig. 1 to 3, the manifold 3 includes a manifold support 34, and a liquid inlet manifold 31, a liquid separator 32 and a liquid separating branch pipe 33 sequentially connected, the liquid separating branch pipe 33 is connected to the inlet of the heat exchange assembly 2, and the housing 1 is provided with a heat exchange medium inlet 14 communicated with the liquid inlet manifold 31.
Specifically, one end of the liquid separator 32 is connected to the liquid inlet manifold 31, and the other end is provided with a plurality of uniformly distributed pipe holes, which are respectively connected to one ends of a plurality of liquid separating branch pipes 33. The other ends of the branch pipes are connected to the inlets of the heat exchange tube bundles in one-to-one correspondence, respectively, and manifold supports 34 fix the branch manifold groups 3 to the first end plate 12. The split manifold group 3 distributes the supply of heat exchange medium evenly over the heat exchange tube bundles.
In some embodiments, as shown in fig. 1 to 3, the collecting manifold group 4 includes a collecting branch pipe 43, a collecting header 42 and a collecting header 41 connected in sequence, the collecting branch pipe 43 is connected to the outlet of the heat exchange assembly 2, and the housing 1 is provided with a heat exchange medium outlet 15 communicating with the collecting header 41.
Specifically, the middle part of the collecting header 42 is connected with the collecting header 41, a plurality of pipe holes are formed in the collecting header 42 and are connected with one ends of a plurality of collecting branch pipes 43, and the other ends of the collecting branch pipes 43 are respectively connected with the outlets of a plurality of groups of heat exchange pipe bundles in a one-to-one correspondence manner. The collecting manifold group 4 collects the liquid or gas returned from the heat exchange medium and returns the liquid or gas to the heat exchange unit or the refrigerating unit.
According to the heat exchange tube heat collection device, through the heat exchange tubes 21 which are arranged between the first end plate 12 and the second end plate 13 and are radially arranged relative to the first central line in the length direction and the axis, the gas collection tube 5 with the axis coincident with the first central line, and the vacuum pump, non-condensable gas in the shell 1 is pumped out through the gas collection tube 5, so that steam-containing air flows approximately radially inwards in a radial flow cold trap from the periphery of a space surrounded by the two end plates, ice blockage cannot be formed on the inlet side of the heat exchange assembly 2 by the steam-containing air flow, flow channels are short and non-baffling, flow resistance is small, the air flow flows radially, the difference of the flow channel sections and the path lengths in different flow directions is small, heat exchange is uniform, no dead angle with unsmooth steam flow is generated in the heat exchange assembly, the heat exchange area is fully utilized, the gas capturing efficiency is high, energy consumption can be saved, the structure design is compact, the space between adjacent heat exchange tubes 21 of each group of heat exchange tube bundles can be small, the radial flow cold trap structure is compact, and occupied space is small.
Furthermore, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., of the various embodiments across schemes), adaptations or alterations based on the present disclosure. The elements in the claims are to be construed broadly based on the language employed in the claims and are not limited to examples described in the present specification or during the practice of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.
The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more aspects thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above detailed description, various features may be grouped together to streamline the disclosure. This is not to be interpreted as an intention that the disclosed features not being claimed are essential to any claim. Rather, the disclosed subject matter may include less than all of the features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with one another in various combinations or permutations. The scope of the disclosure should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
The above embodiments are merely exemplary embodiments of the present disclosure, which are not intended to limit the present disclosure, the scope of which is defined by the claims. Various modifications and equivalent arrangements of parts may be made by those skilled in the art, which modifications and equivalents are intended to be within the spirit and scope of the present disclosure.
Claims (8)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210151232.1A CN115837170B (en) | 2022-02-15 | 2022-02-15 | Radial flow cold trap |
| PCT/CN2022/143112 WO2023155610A1 (en) | 2022-02-15 | 2022-12-29 | Radial flow cold trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210151232.1A CN115837170B (en) | 2022-02-15 | 2022-02-15 | Radial flow cold trap |
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| Publication Number | Publication Date |
|---|---|
| CN115837170A CN115837170A (en) | 2023-03-24 |
| CN115837170B true CN115837170B (en) | 2025-08-01 |
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| CN202210151232.1A Active CN115837170B (en) | 2022-02-15 | 2022-02-15 | Radial flow cold trap |
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| WO (1) | WO2023155610A1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216986361U (en) * | 2022-02-15 | 2022-07-19 | 卢允庄 | Radial flow cold trap |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201551867U (en) * | 2009-11-16 | 2010-08-18 | 沈阳航天新阳速冻设备制造有限公司 | Plate beam type cold trap |
| JP5748682B2 (en) * | 2012-01-31 | 2015-07-15 | 住友重機械工業株式会社 | Cold trap and cold trap control method |
| DE202015101792U1 (en) * | 2015-04-13 | 2015-04-28 | Aixtron Se | cold trap |
| CN106482540B (en) * | 2015-08-24 | 2018-07-03 | 山东美陵博德化工机械有限公司 | Radial direction tubular heat exchanger |
| CN205672598U (en) * | 2016-06-03 | 2016-11-09 | 山东飞源新材料有限公司 | A kind of cold-trap preventing non-condensable gas from carrying condensable gas secretly |
| CN208810011U (en) * | 2018-09-17 | 2019-05-03 | 青岛正大凯特新材料技术有限公司 | A kind of controllable heat tranferring radial direction isothermal reactor of monotubular chamber |
| CN110595160A (en) * | 2019-09-18 | 2019-12-20 | 江苏博莱客冷冻科技发展有限公司 | Cold trap for freeze dryer |
| CN215538550U (en) * | 2021-09-22 | 2022-01-18 | 大连海事大学 | An efficient cold trap for experimental teaching |
-
2022
- 2022-02-15 CN CN202210151232.1A patent/CN115837170B/en active Active
- 2022-12-29 WO PCT/CN2022/143112 patent/WO2023155610A1/en not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216986361U (en) * | 2022-02-15 | 2022-07-19 | 卢允庄 | Radial flow cold trap |
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| Publication number | Publication date |
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| CN115837170A (en) | 2023-03-24 |
| WO2023155610A1 (en) | 2023-08-24 |
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