CN213481064U - Horizontal double-row flow equalizing heat exchanger - Google Patents

Abstract

The utility model discloses a decurrent position biserial flow equalization heat exchanger, it includes shell and tube, fin copper pipe, flow distribution pipe, water pipe head, footing and C venturi tube joint. The distributing pipe is a U-shaped three-way pipe fitting, and a through hole in the middle of the outer bending section is hermetically connected with a water pipe joint extending outwards. The two pipe orifices on the left and right sides of the other side have the same caliber and face opposite to the water pipe joint. Two upper and lower alternate distribution pipes are respectively lapped with the composite pipe type heat exchange unit by two pipe orifices with equal calibers, and the lapping position is the end surface of the shell pipe at the equal height position of the U-shaped gap of the heat exchange unit, thereby forming the flow equalizing water supply heat exchange structure with the double-row U-shaped composite pipe type heat exchange units operating in parallel. The utility model discloses the flow distribution pipe of configuration is the U-shaped, and the water route that this structure formed is the arc, effectively reduces the water path resistance, reduces the energy consumption, and in addition the structure symmetry, the reposition of redundant personnel is even, is favorable to improving heat exchange efficiency.

Description

Horizontal double-row flow equalizing heat exchanger

Technical Field

The utility model belongs to a structural improvement design scheme among the general machinery technical field, specifically say, the utility model relates to a heat exchanger water route structural design, especially a prone position biserial flow equalization heat exchanger.

Background

The heat exchanger is the main equipment necessary for the refrigerating system, and the heat exchange efficiency of the heat exchanger directly influences the application effect. At present, the structural forms of commercially available heat exchangers mainly include a shell-tube type, a sleeve type, a plate type and a tank type, and the water path structures of the heat exchangers with the traditional structures are simple, convenient to manufacture and externally connected, all can effectively realize heat exchange, and easily meet the expected matching requirements. The main water inlet pipe and the axis of the flow distribution pipe of the heat exchanger in the prior art are connected in a right angle, and the connecting structure is convenient for the integrated installation of a plurality of heat exchange units. However, such a sequential water supply and angular water supply structure has a large water flow resistance, resulting in a poor heat exchange efficiency of the front replacement heat unit compared to the rear replacement heat unit. In reality, the water flow resistance of the heat exchanger with large and medium specifications is generally more than 40KPa, and the water flow resistance of the heat exchanger with small specifications even reaches 100 kPa. In general, the heat exchanger in the prior art needs to be matched with power equipment with corresponding power to meet the use requirement due to large water flow resistance in the operation process, and the heat exchange efficiency of the heat exchanger is inevitably reduced due to high energy consumption under the set conditions. The heat exchanger belongs to a common production device, is widely applied in the manufacturing industry, and the operation efficiency value of a product with a large reserved quantity in the market is paid much attention by people. For many years, some manufacturers in the industry are always seeking for the improvement scheme of the heat exchanger structure, particularly the improvement of the structure of the cooling water channel, so as to obtain a novel heat exchanger which can keep the advantages of the original structure, and can achieve smooth water channel, equal water flow and relatively high operation efficiency.

Disclosure of Invention

The utility model discloses mainly to the unreasonable problem of prior art waterway structure, provide a decurrent position biserial flow equalizing heat exchanger, this structure is on the unchangeable basis of keeping main part heat transfer structure, through addding simple structure, rationally distributed, the easy flow distribution pipe of preparation to reach the parallelly connected equivalent operation purpose of biserial heat transfer unit, this kind of arc water route flow distribution pipe greatly reduced cooling water route resistance to flow is showing and is improving the even shunting performance of cooling water, creates the prerequisite for optimizing heat exchange efficiency.

The utility model discloses a technical goal is realized to following technical scheme.

The horizontal double-row flow-equalizing heat exchanger comprises shell tubes, finned copper tubes, flow distribution tubes, water tube connectors, bottom feet and C-shaped tube connectors, wherein the finned copper tubes are U-shaped tube bundles formed by copper tubes with fins wound on the outer walls of a group of copper tubes, the C-shaped tube connectors are sleeved on the bent sections of the finned copper tubes, the remaining two sides are straight tube sections, the two shell tubes with the same specification are sleeved on the outer walls of the remaining straight tube sections on the two sides of the finned copper tubes respectively, then the combined end surfaces of the shell tubes and the C-shaped tube connectors are in sealing connection, an inlet for radially introducing a refrigerant is formed in the outer wall of the extending end of one shell tube, an outlet for radially discharging the refrigerant is formed in the outer wall of the extending end of the other shell tube, and the U-shaped composite tube. The bottom foot supports two U-shaped composite tube type heat exchange units which are prone and have the same specification and consistent notch orientation. The improvement is that: the distributing pipes are U-shaped tee pipe fittings, through holes arranged in the middle of the outer bending section are used for being in sealing connection with water pipe joints extending outwards, the diameters and the directions of two pipe orifices arranged on the left side and the right side of the opposite surface are the same, but the diameters of the two pipe orifices are smaller than those of the water pipe joints, the directions of the two pipe orifices are opposite to those of the matched water pipe joints, the distributing pipes arranged alternately from top to bottom are respectively lapped on adjacent U-shaped composite pipe type heat exchange units by the two pipe orifices with the same diameter, and the lapped positions are the end faces of the shell pipes with U-shaped notches at equal heights, so that the flow equalizing type water supply and heat exchange structure running in.

As a further improvement scheme, the water pipe joint of the flow distribution pipe is a round pipe, and the diameter of the water pipe joint is 10-20% larger than the caliber of the pipe orifice positioned on the left and right sides of the back surface.

As a further improvement scheme, the diameter of an inlet for introducing the refrigerant is 20-30% larger than that of an outlet for discharging the refrigerant.

Compared with the prior art, the utility model, following positive effect has:

1. the heat exchange units arranged in parallel are connected in a contraposition way by the flow distribution pipe, the structure is reasonable and simple,

the connection is reliable;

2. the distribution pipe configured by the utility model is U-shaped, the water path formed by the structure is arc-shaped, the smoothness of the arc-shaped water path is obviously better than that of the angular water path in the prior art, and the water flow resistance is small, thereby reducing the energy consumption, namely increasing the heat exchange efficiency;

3. the bent pipe-shaped flow distribution pipe has symmetrical structure, and the caliber of the two matched pipe orifices is equal, so the flow distribution is uniform, the heat exchange performance consistency of the heat exchange units connected in parallel is good, the operation efficiency is improved,

drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view schematic of fig. 1.

Fig. 3 is a schematic cross-sectional view of fig. 1A-a.

Fig. 4 is a perspective view of fig. 1.

Fig. 5 is a water path splitting view of the distribution pipe shown in fig. 1, wherein the water path is arc-shaped and symmetrically split.

FIG. 6 is a schematic diagram comparing the diversion of a waterway of a prior art distribution pipe, wherein the waterway is angularly diverted and sequentially diverted.

Having the implementation manner

The invention will be further explained with reference to the drawings and the examples.

The prone double-row flow equalizing heat exchanger shown in fig. 1 and 4 comprises a shell tube 1, a finned copper tube 2, a flow distribution tube 3, a water pipe joint 4, a foot 5 and a C-shaped pipe joint 6. The finned copper tube 2 is a U-shaped tube bundle as shown in figure 3, which is a built-in tube of a heat exchanger and is formed by a cluster of copper tubes with fins wound on the outer walls. In the structure, the bent section of the finned copper tube 2 is provided with C-shaped tube joints 6 which are sleeved with each other, the remaining two sides are straight tube sections, two shell tubes 1 with the same caliber as that of the C-shaped tube joints 6 are taken and sleeved on the outer walls of the remaining straight tube sections on the two sides of the finned copper tube 2 respectively, and then the shell tubes 1 are connected with the combined end faces of the C-shaped tube joints 6 in a sealing mode. In order to create the integral heat exchange condition of the built-in finned copper tube 2, an inlet 1.1 for radially introducing a refrigerant is arranged on the outer tube wall of the extending end of one shell tube 1, and an outlet 1.2 for radially discharging the refrigerant is arranged on the outer tube wall of the extending end of the other shell tube 1, so that a U composite tube type heat exchange unit is formed. Because the external fins of the fin copper tube 2 extend out in the radial direction, certain blocking effect on the fluidity of the refrigerant is achieved, namely, the liquid flow resistance is increased. In order to improve the fluidity of the refrigerant, the caliber of the inlet 1.1 and the caliber of the outlet 1.2 of the shell tube 1 are designed in a differential mode, namely the actual caliber of the inlet 1.1 is larger than that of the outlet 1.2, the specification of the embodiment is centered, the caliber of the inlet 1.1 of the shell tube 1 is determined to be 32mm, the caliber of the outlet 1.2 is determined to be 25mm, and the configuration meets the design condition of 20-30% difference. The bottom foot 5 belongs to a supporting member in the structure and is used for directly supporting two U-shaped composite tube type heat exchange units which are in prone positions, have the same specification and have the same notch orientation. The structure integrates positioning, sequencing and integration, and is convenient for the parallel connection of two U-shaped composite tube type heat exchange units with the same specification. The distribution pipe 3 is a core component for realizing the parallel connection of the structures, and the U-shaped three-way pipe adopts a symmetrical structure and an arc-shaped water path design as shown in figure 5. The through hole in the middle of the outer bending section of the U-shaped flow distribution pipe 3 is used for being hermetically connected with a water pipe joint 4 extending outwards, the water pipe joint 4 in the structure is a section of circular pipe, and the calibers and the orientations of two pipe orifices arranged on the left side and the right side of the opposite surface are the same. However, these two nozzles have a smaller opening than the water connection 4 and are oriented opposite the mating water connection 4. In this embodiment, the caliber of the water pipe joint 4 is 60mm, and the calibers of the two pipe orifices are 50mm, and the configuration satisfies the design condition that the difference is 10-20%. The installation position of the flow distribution pipe 3 is shown in figure 1 or figure 2 or figure 4, two flow distribution pipes 3 which are arranged alternately up and down are in a flat shape, two pipe orifices with equal calibers are respectively lapped on adjacent U-shaped composite pipe type heat exchange units, and the lapping position is the end surface of the shell pipe 1 at the equal height position of the U-shaped notch. Through the connection, the flow equalizing type water supply heat exchange structure which runs in parallel by double-row U-shaped composite pipelines or heat exchange units is formed.

The utility model discloses during the actual operation, the refrigerant is introduced from the import 1.1 of shell and tube 1, and the refrigerant is in the same direction as U-shaped fin copper pipe 2 flow direction other ends in 1 inner chamber of tube, finally discharges from the export 1.2 of shell and tube 1. The cooling water is introduced into the inner cavity of the matched flow distribution pipe 3 from the water pipe joint 4 positioned at the lower position, and is divided into two pipe orifices which are symmetrically arranged and have the same caliber to enter the inner cavity of the finned copper pipe 2 for heat exchange until the cooling water is discharged from the water pipe joint 4 positioned at the higher position. The cooling water path and the refrigerant are in reverse flow configuration, so that balanced heat exchange is easy to realize, and the heat exchange efficiency is improved.

The utility model discloses a join in marriage flow pipe 3 simple structure, compactness, connection convenience and reliable, the most important adopts like the arc water route that the shown symmetrical structure of figure 5 design and two sizes of configuration equal to do the reposition of redundant personnel, and this kind of structure hinders a lot of less than the shown angle reposition of redundant personnel liquid of prior art figure 6, directly improves the patency in water route. The utility model discloses the product of making is impartial because of the cooling water route leads to in the same direction as with the reposition of redundant personnel, and liquid resistance in service all is less than 20KPa, and this embodiment is only 9.5KPa, and consequently supporting power equipment power consumption is than with specification 30% at least less, is showing promotion heat exchange efficiency from this.

Claims (3)

1. A prone position double-row uniform flow type heat exchanger comprises a shell tube (1), a finned copper tube (2), a flow distribution tube (3), a water tube connector (4), a footing (5) and a C-shaped tube connector (6), wherein the finned copper tube (2) is a U-shaped tube bundle formed by a group of copper tubes with fins wound on outer walls, the bent section of the finned copper tube (2) is provided with the C-shaped tube connector (6) which is sleeved with each other, the rest two sides of the finned copper tube are straight tube sections, two shell tubes (1) with the same specification are sleeved on the outer walls of the remaining straight tube sections on the two sides of the finned copper tube (2), then the shell tube (1) and the C-shaped tube connector (6) are connected in a sealing mode, an inlet (1.1) for radially introducing a refrigerant is formed in the outer wall of the outer extending end of one shell tube (1), an outlet (1.2) for radially discharging the refrigerant is formed in the outer wall of the outer extending end of the other shell tube (1), a U-shaped composite heat exchange unit is formed by, The notches face the same U-shaped composite tube type heat exchange units; the method is characterized in that: the distributing pipe (3) is a U-shaped three-way pipe, a through hole arranged in the middle of the outer bending section is used for being connected with a water pipe joint (4) extending outwards in a sealing mode, the two pipe orifice calibers arranged on the left side and the right side of the opposite surface are the same in orientation, but the two pipe orifice calibers are smaller than the water pipe joint (4), the orientation of the two pipe orifice calibers is opposite to that of the matched water pipe joint (4), the distributing pipes (3) arranged alternately from top to bottom are respectively lapped on adjacent U-shaped composite pipe type heat exchange units through the pipe orifices with the same calibers, the lapping position is the end face of the shell pipe (1) with U-shaped notches at the equal height position, and the flow equalizing.

2. The prone double-row flow equalizing heat exchanger of claim 1, wherein: the water pipe joint (4) arranged on the flow distribution pipe (3) is a round pipe, and the diameter of the round pipe is 10-20% larger than the caliber of the pipe orifice positioned on the left and right sides of the back surface.

3. The prone double-row flow equalizing heat exchanger of claim 1, wherein: the diameter of an inlet (1.1) for introducing the refrigerant, which is configured on the fin copper pipe (2), is 20-30% larger than that of an outlet (1.2) for discharging the refrigerant.

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