CN210802152U - Heat exchange station - Google Patents
Heat exchange station Download PDFInfo
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- CN210802152U CN210802152U CN201921633254.1U CN201921633254U CN210802152U CN 210802152 U CN210802152 U CN 210802152U CN 201921633254 U CN201921633254 U CN 201921633254U CN 210802152 U CN210802152 U CN 210802152U
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- flow guide
- guide area
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Abstract
The utility model discloses a heat exchange station, including the plate heat exchanger in the pipe network loop of the primary side, secondary side pipe network loop and series connection in pipe network loop of the primary side and secondary side, all be equipped with valve and water pump in the pipe network loop of the primary side and secondary side, the plate heat exchanger all communicates with said valve and water pump; the plate heat exchanger comprises a plurality of heat exchange plates which are overlapped and abutted; the heat exchange plate comprises four medium circulation holes positioned at four corners of the heat exchange plate, a main heat exchange area positioned in the middle of the heat exchange plate, and a flow guide area positioned between the medium circulation holes and the main heat exchange area; the medium circulation hole is shaped like a panda eye, and the position of the medium circulation hole close to the flow guide area is sunken towards the direction away from the flow guide area. The utility model discloses can optimize the flow of medium on the heat transfer slab, realize evenly distributed on heat transfer slab width direction, avoid the existence of flow blind spot, improve plate heat exchanger and the thermal utilization ratio in heat transfer station.
Description
Technical Field
The utility model belongs to the indirect heating equipment field, in particular to heat exchange station.
Background
The heat exchange station is equipment for transferring heat of the primary side network to a secondary side network user through the heat exchanger, and the plate type heat exchanger is widely applied to the heat exchange station due to high heat transfer efficiency and small occupied area.
In addition, the heat exchange plate of the existing plate heat exchanger is limited by the plate structure, the flow guide structure on the heat exchange plate can not completely balance the medium flow resistance of the medium before entering the main heat exchange area of the plate heat exchanger, and the phenomena of bias flow and uneven medium distribution can occur in the main heat exchange area of the plate heat exchanger, so that the heat transfer efficiency of the plate heat exchanger is reduced, and the transfer efficiency of the heat of a primary side network to a secondary side network user is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a heat exchange station mainly solves the problem that plate heat exchanger medium distributes inhomogeneously, and heat transfer efficiency is low.
In order to solve the above technical problems, the technical solution adopted by the present invention provides a heat exchange station, which comprises a primary side pipe network loop, a secondary side pipe network loop, and a plate heat exchanger connected in series in the primary side pipe network loop and the secondary side pipe network loop,
a valve and a water pump are arranged in each of the primary side pipe network loop and the secondary side pipe network loop, and the plate heat exchanger is communicated with the valve and the water pump;
-the plate heat exchanger comprises a plurality of stacked and abutting heat exchanger plates;
the heat exchanger plate comprises four medium flow holes at the four corner positions of the heat exchanger plate, a main heat exchange zone at the middle position of the heat exchanger plate, and a flow guiding zone between the medium flow holes and the main heat exchange zone;
the media flow openings are non-circular openings, which are recessed away from the flow guide region close to the flow guide region.
Preferably, the media flow aperture is "panda eye" shaped.
Preferably, the flow guide area comprises a first-stage flow guide area and a second-stage flow guide area, a sealing groove and a medium inlet groove are formed in the position, close to the medium flow through hole, of the first-stage flow guide area, the first-stage flow guide area is separated from the medium flow through hole through the sealing groove, the first-stage flow guide area is communicated with the other medium flow through hole through the medium inlet groove, and the second-stage flow guide area is communicated with the first-stage flow guide area and the main heat exchange.
Preferably, the secondary flow guide area is internally provided with corrugated bulges which are arranged in parallel.
Preferably, the secondary flow guide area comprises a high-resistance flow guide area, a medium-resistance flow guide area and a low-resistance flow guide area; the high-resistance flow guide area is positioned on the side of the medium inlet groove, the low-resistance flow guide area is positioned on the side of the sealing groove, and the medium-resistance flow guide area is positioned between the high-resistance flow guide area and the low-resistance flow guide area.
Preferably, the flow cross-sectional area of the high-resistance flow guide area is smaller than that of the medium-resistance flow guide area, and the flow cross-sectional area of the medium-resistance flow guide area is smaller than that of the low-resistance area.
Preferably, the pitch of the corrugation lobes in the high resistance flow guiding region is smaller than the pitch of the corrugation lobes in the medium resistance flow guiding region.
Preferably, the corrugation lobe pitch in the intermediate resistance flow guide region is smaller than the corrugation lobe pitch in the low resistance flow guide region.
Preferably, the corrugated protrusions in the secondary flow-guiding region are ramp-wave or chevron corrugations.
The utility model has the advantages and positive effects that:
the utility model discloses in heat exchange station, heat in the pipe network return circuit of once side passes through plate heat exchanger and transmits to the pipe network return circuit of secondary side in, through the size of opening of valve in the pipe network return circuit of control once side, adjusts the flow in the pipe network of once in the pipe network return circuit of once side, and then the heat that control gets into in the plate heat exchanger, improves plate heat exchanger's heat transfer efficiency, can improve heat exchange station to the thermal utilization ratio of once side net, and further on, the utility model discloses give "panda eye" form medium flow through-hole on the heat exchange plate, its position that is close to the flow guide district is sunken to the direction of leaving the flow guide district, under the circumstances that guarantees that medium flow through-hole circulation sectional area is unchangeable, can make the position of flow guide district to medium flow through-hole offset, and then increased the area in main heat exchange; meanwhile, due to the adoption of the sunken structural form, the lengths of the medium circulation holes and the positions adjacent to the flow guide areas are prolonged, the arrangement of the flow guide structures in the flow guide areas is facilitated, the flowing of the medium on the heat exchange plates is optimized, the uniform distribution in the width direction of the heat exchange plates is realized, the existence of flowing dead areas is avoided, the utilization rate of effective heat exchange areas of the heat exchange plates is increased, the heat exchange efficiency of the plate heat exchanger is increased, and the heat utilization rate of the heat exchange station is increased.
Additionally, plate heat exchanger's heat transfer slab adopted second grade water conservancy diversion structure, one-level water conservancy diversion district and second grade water conservancy diversion district promptly, flow resistance through balanced medium in this regional flow in-process, make the medium before the medium flow hole gets into the main heat transfer district of heat transfer slab from, the medium can get into the main heat transfer district of heat transfer slab with even speed on the heat transfer slab transverse direction, the medium distributes evenly, the too big or undersize problem of local medium velocity of flow can not appear, it is even to make the heat transfer slab atress, the too big heat transfer slab ripple of heat transfer slab local atress has been avoided warp, contact rate between the heat transfer slab is reduced, thereby reduce the problem of heat transfer efficiency of heat transfer slab.
Drawings
Fig. 1 is a flow diagram of an embodiment of a heat exchange station of the present invention;
fig. 2 is a schematic view of an embodiment of a heat exchanger plate of the plate heat exchanger of the present invention;
fig. 3 is a partial schematic view of a flow guiding area of an embodiment of a heat exchanger plate of the plate heat exchanger of the present invention.
In the figure:
1-primary side pipe network loop; 2-secondary side pipe network loop; 3-a plate heat exchanger; 4-a valve; 5, a water pump; 6-heat exchange plate; 7-media flow through pores; 8-a main heat transfer zone; 9-a flow guide zone; 91-a primary flow guide zone; 92-a secondary flow guide zone; 921-high resistance flow guiding zone; 922-middle resistance flow guide zone; 923-low-resistance diversion area; 10-a sealing groove; 11-media into the tank.
Detailed Description
For the sake of clarity, the present invention will now be further described with reference to the accompanying drawings and specific embodiments:
example 1:
as shown in fig. 1, a heat exchange station comprises a primary side pipe network loop 1, a secondary side pipe network loop 2 and plate heat exchangers 3 connected in series in the primary side pipe network loop 1 and the secondary side pipe network loop 2, wherein both the primary side pipe network loop 1 and the secondary side pipe network loop 2 are provided with a valve 3 and a water pump 4, and both the plate heat exchangers 3 are communicated with the valve 3 and the water pump 4;
the plate heat exchanger 3, the valve 4 and the water pump 5 are the most basic constituent units in the heat exchange station, the plate heat exchanger 3 is used as a heat exchange element, heat in the primary side pipe network loop 1 is transferred to the secondary side pipe network loop 2, and the heat is used as a source of heat required by heating or domestic water in the secondary pipe network loop 2; the opening degree of the valve 4 in the primary side pipe network can directly determine the medium flow entering the plate heat exchanger in the primary side pipe network loop, so as to determine the heat entering the plate heat exchanger, the opening degree of the valve 4 in the secondary side pipe network loop determines the medium flow entering the plate heat exchanger in the secondary side pipe network loop, so as to determine the temperature of the secondary side medium after flowing through the heat exchanger, and the opening degrees of the valve 4 on the primary side pipe network loop 1 and the secondary side pipe network loop 2 can be controlled through a control program;
the plate heat exchanger 3 comprises a plurality of superposed and abutted heat exchange plates 6, and each heat exchange plate 6 comprises four medium flow through holes 7 positioned at four corner positions of the heat exchange plate 6, a main heat exchange area 8 positioned at the middle position of the heat exchange plate 6 and a flow guide area 9 positioned between the medium flow through hole 7 and the main heat exchange area 8; the medium flow through hole 7 is in a shape of a panda eye, the position of the medium flow through hole, which is close to the flow guide area 9, is sunken to the direction away from the flow guide area 9, so that the flow guide area 9 can be deviated to the direction of the medium flow through hole 7, the area occupied by the main heat exchange area 8 is increased, the effective utilization rate of the surface of the heat exchange plate is improved, in addition, the linear contact length between the medium flow through hole 7 and the flow guide area is increased, the design of a flow guide structure in the flow guide area 9 is facilitated, the medium can uniformly flow on the heat exchange plate, and the flow dead.
The flow guiding area 9 comprises a first-stage flow guiding area 91 and a second-stage flow guiding area 92, a sealing groove 10 and a medium inlet groove 11 are arranged at the position, close to the medium flow through hole 7, of the first-stage flow guiding area 91, the first-stage flow guiding area 91 is separated from one medium flow through hole 7 through the sealing groove 10, and the first-stage flow guiding area 91 is communicated with the other medium flow through hole 7 through the medium inlet groove 11; in the plate heat exchanger, in order to utilize the heat exchange area of the plate surface to the maximum, the medium flow through hole 7 is located at the corner position of the heat exchange plate, which is respectively the cold medium inlet, the hot medium outlet, the cold medium outlet, and the hot medium inlet, the medium enters the flow channel between two adjacent heat exchange plates 6 from the medium flow through hole 7, and the medium is guided into the main heat exchange area 8 of the heat exchange plate from the corner position of the heat exchange plate under the flow guiding effect of the flow guiding area 9, in the prior art, the flow guiding area 9 of the plate heat exchanger is difficult to realize that the medium can enter the main heat exchange area 8 at a uniform flow rate, which can cause the area near the medium flow through hole 7 in the main heat exchange area 8 where the medium flows, because of short flow length, small resistance, the medium with large flow can flow into the area, and further, the flow rate is high, the medium flow in the main heat exchange, and then the velocity of flow is less, and the inhomogeneity of medium flow distribution leads to the pressure difference that receives in the heat transfer board owner heat transfer district like this to can make heat transfer board pressurized big region, the contact rate between two heat transfer board 6 reduces, reduces plate heat exchanger's heat transfer efficiency.
Example 2:
more specifically, in embodiment 1, the added secondary flow guide area 92 communicates the primary flow guide area 91 and the primary heat exchange area 8, the secondary flow guide area 92 is provided with parallel arranged corrugated protrusions 12, which include a high resistance flow guide area 921, a medium resistance flow guide area 922, and a low resistance flow guide area 923, the high resistance flow guide area 921 is located on the side of the medium inlet slot 11, the low resistance flow guide area 922 is located on the side of the sealing groove 10, the medium resistance flow guide area 922 is located between the high resistance flow guide area 921 and the low resistance flow guide area 923, the pitch of the corrugated protrusions in the high resistance flow guide area 921 is smaller than the pitch of the corrugated protrusions in the medium resistance flow guide area 922, and the pitch of the corrugated protrusions in the medium resistance flow guide area 922 is smaller than the pitch of the corrugated protrusions in the low resistance flow guide area 923; the secondary flow guide area 92 is arranged, based on the actual problem of unbalanced resistance in the process that the medium flows through the medium flow hole 7 to the main heat exchange area 8, the flow resistance of the medium flowing through the secondary flow guide area 92 is increased or reduced by controlling different flow cross sections, the flow cross section of the high-resistance flow guide area 921 is small, the flow resistance is maximum, the flow cross section of the low-resistance flow guide area 923 is maximum, the flow cross section of the medium-resistance flow guide area 922 is located between the high-resistance flow guide area 921 and the low-resistance flow guide area 922, the flow resistance is also located between the two flow guide areas, so that the high-resistance flow guide area 921 is arranged at the lower end of the medium inlet slot 11 to compensate the low resistance consumed by the medium flowing at the position, the low-resistance flow guide area 923 is arranged at the lower end of the sealing groove 10 to balance the large resistance consumed by the medium flowing at the position, the medium-resistance flow guide area 922 is located between the high-resistance flow, the total flow resistance of the medium from the primary flow guide area 91 to the main heat exchange area 8 through the secondary flow guide area 92 is equivalent, the flow velocity distribution of the medium is more uniform after the medium enters the main heat exchange area 8, and the occurrence of local pressure overlarge ripple deformation is avoided; specifically, to realize different resistance values of different resistance flow guide areas, the pitch of the corrugated protrusions in the high resistance flow guide area 921 is smaller than the pitch of the corrugated protrusions in the medium resistance flow guide area 922, and the pitch of the corrugated protrusions in the medium resistance flow guide area 922 is smaller than the pitch of the corrugated protrusions in the low resistance flow guide area 923.
As shown in fig. 2 and 3, the corrugation lobes in the secondary flow guiding region 92 are ramp-venturi or chevron-shaped corrugations, which can be selected according to the length and width dimensions of the heat exchange plates and the size of the medium flow holes 7; the ripples between two heat exchange plates are abutted, and the secondary flow guide area 92 is formed in a flow channel form similar to that in the main heat exchange area after the oblique wave Wen or herringbone ripple form bulges abut, so that when fluid flows through the secondary flow guide area 92, the uniformity of the medium flowing on the plates can be realized, and meanwhile, heat exchange can also be realized between cold fluid and hot fluid, and the defect that the traditional flow guide area only plays a role in medium flow guide and cannot realize heat exchange is overcome.
Example 3:
the heat exchange station comprises a primary side pipe network loop, a secondary side pipe network loop and a plate type heat exchanger connected in series in the primary side pipe network loop and the secondary side pipe network loop,
a valve and a water pump are arranged in each of the primary side pipe network loop and the secondary side pipe network loop, and the plate heat exchanger is communicated with the valve and the water pump;
-the plate heat exchanger comprises a plurality of stacked and abutting heat exchanger plates;
the heat exchanger plate comprises four medium flow holes at the four corner positions of the heat exchanger plate, a main heat exchange zone at the middle position of the heat exchanger plate, and a flow guiding zone between the medium flow holes and the main heat exchange zone;
the media flow openings are non-circular openings, which are recessed away from the flow guide region close to the flow guide region.
For example, but not limiting of, in one preferred embodiment, the media flow aperture is in the shape of a panda eye.
Example 4:
in this preferred embodiment, more specifically than embodiment 3, the flow guiding region includes a primary flow guiding region and a secondary flow guiding region, the primary flow guiding region is provided with a sealing groove and a medium inlet groove near the medium flow through hole, the primary flow guiding region is separated from one medium flow through hole by the sealing groove, the primary flow guiding region is communicated with the other medium flow through hole by the medium inlet groove, and the secondary flow guiding region is communicated with the primary flow guiding region and the main heat exchange region.
Example 5:
in this preferred embodiment, more specifically than embodiment 4, the secondary flow guiding region is provided with parallel arranged corrugated protrusions.
Example 6:
in this preferred embodiment, more specifically than embodiments 4 and 5, the secondary flow guiding region comprises a high resistance flow guiding region, a medium resistance flow guiding region, and a low resistance flow guiding region; the high-resistance flow guide area is positioned on the side of the medium inlet groove, the low-resistance flow guide area is positioned on the side of the sealing groove, and the medium-resistance flow guide area is positioned between the high-resistance flow guide area and the low-resistance flow guide area.
Example 7:
in this preferred embodiment, more specifically than embodiment 6, the flow cross-sectional area of the high resistance flow field is smaller than the flow cross-sectional area of the intermediate resistance flow field, which is smaller than the flow cross-sectional area of the low resistance flow field.
Example 8:
in this preferred embodiment, more specifically than embodiment 6, the corrugation lobe pitch in the high resistance flow guiding region is smaller than the corrugation lobe pitch in the medium resistance flow guiding region.
Example 9:
in this preferred embodiment, even more specifically than embodiment 6, the corrugation lobe pitch in the intermediate resistance flow guiding region is less than the corrugation lobe pitch in the low resistance flow guiding region.
Example 10:
in this preferred embodiment, and even more particularly than in examples 4 and 5, the corrugated protrusions in the secondary flow-guiding region are ramp-Wen or herringbone corrugations.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present disclosure and not for limiting the same; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will understand that: modifications to the embodiments of the disclosure or equivalent substitutions of parts of the technical features may still be made; without departing from the spirit of the present disclosure, it is intended to cover all such modifications as fall within the scope of the claimed subject matter.
Claims (9)
1. A heat exchange station, characterized by: comprises a primary side pipe network loop, a secondary side pipe network loop and a plate type heat exchanger connected in series in the primary side pipe network loop and the secondary side pipe network loop,
a valve and a water pump are arranged in each of the primary side pipe network loop and the secondary side pipe network loop, and the plate heat exchanger is communicated with the valve and the water pump;
-the plate heat exchanger comprises a plurality of stacked and abutting heat exchanger plates;
the heat exchanger plate comprises four medium flow holes at the four corner positions of the heat exchanger plate, a main heat exchange zone at the middle position of the heat exchanger plate, and a flow guiding zone between the medium flow holes and the main heat exchange zone;
the media flow openings are non-circular openings, which are recessed away from the flow guide region close to the flow guide region.
2. A heat exchange station according to claim 1, characterized in that: the medium circulation hole is in a shape of a panda eye.
3. A heat exchange station according to claim 1, characterized in that: the flow guide area comprises a first-stage flow guide area and a second-stage flow guide area, a sealing groove and a medium inlet groove are formed in the position, close to the medium flow through hole, of the first-stage flow guide area, the first-stage flow guide area is separated from the medium flow through hole through the sealing groove, the first-stage flow guide area is communicated with the other medium flow through hole through the medium inlet groove, and the second-stage flow guide area is communicated with the first-stage flow guide area and the main heat.
4. A heat exchange station according to claim 3, characterised in that: corrugated bulges which are arranged in parallel are arranged in the secondary flow guide area.
5. A heat exchange station according to claim 3 or 4, characterised in that: the secondary flow guide area comprises a high-resistance flow guide area, a middle-resistance flow guide area and a low-resistance flow guide area; the high-resistance flow guide area is positioned on the side of the medium inlet groove, the low-resistance flow guide area is positioned on the side of the sealing groove, and the medium-resistance flow guide area is positioned between the high-resistance flow guide area and the low-resistance flow guide area.
6. A heat exchange station according to claim 5, characterised in that: the flow cross-sectional area of the high-resistance area is smaller than that of the middle-resistance flow guide area, and the flow cross-sectional area of the middle-resistance flow guide area is smaller than that of the low-resistance area.
7. The heat exchange station of claim 5, wherein: the corrugated protrusion distance in the high resistance flow guide area is smaller than the corrugated protrusion distance in the medium resistance flow guide area.
8. The heat exchange station of claim 5, wherein: the pitch of the corrugated protrusions in the intermediate resistance flow guide region is smaller than the pitch of the corrugated protrusions in the low resistance flow guide region.
9. The heat exchange station according to claim 3 or 4, characterized in that: the corrugated bulges in the secondary flow guide area are oblique wave Wen or herringbone corrugations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921633254.1U CN210802152U (en) | 2019-09-28 | 2019-09-28 | Heat exchange station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921633254.1U CN210802152U (en) | 2019-09-28 | 2019-09-28 | Heat exchange station |
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| CN210802152U true CN210802152U (en) | 2020-06-19 |
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| CN201921633254.1U Active CN210802152U (en) | 2019-09-28 | 2019-09-28 | Heat exchange station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696550A (en) * | 2020-12-28 | 2021-04-23 | 中国航空工业集团公司沈阳空气动力研究所 | Diffusion rectification flow equalization structure |
-
2019
- 2019-09-28 CN CN201921633254.1U patent/CN210802152U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696550A (en) * | 2020-12-28 | 2021-04-23 | 中国航空工业集团公司沈阳空气动力研究所 | Diffusion rectification flow equalization structure |
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