CN111336845A - Single-heat-source double-system heat exchanger plate and plate heat exchanger - Google Patents

Single-heat-source double-system heat exchanger plate and plate heat exchanger Download PDF

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Publication number
CN111336845A
CN111336845A CN202010299172.9A CN202010299172A CN111336845A CN 111336845 A CN111336845 A CN 111336845A CN 202010299172 A CN202010299172 A CN 202010299172A CN 111336845 A CN111336845 A CN 111336845A
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China
Prior art keywords
heat
plate
heat exchange
inlet
outlet
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Pending
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CN202010299172.9A
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Chinese (zh)
Inventor
胡佳卫
郝亮
余胜亮
余建武
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Shanghai Accessen New Tech Co ltd
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Shanghai Accessen New Tech Co ltd
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Priority to CN202010299172.9A priority Critical patent/CN111336845A/en
Publication of CN111336845A publication Critical patent/CN111336845A/en
Pending legal-status Critical Current

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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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/10—Arrangements for sealing the margins

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention discloses a single-heat-source double-system heat exchanger plate and a plate heat exchanger, wherein the plate comprises a first heat exchange part and a second heat exchange part, the second heat exchange part is integrally connected to the oblique upper part of the tail end of the first heat exchange part and is symmetrical to the first heat exchange part at the original point to form a step shape, and the middle parts of the first heat exchange part and the second heat exchange part are all equidirectional transverse herringbone corrugated grooves; the top of the front end of the first heat exchange part is provided with a heat flow inlet, the bottom of the first heat exchange part is provided with a first heat exchange outlet, and the bottom of the tail end of the first heat exchange part is provided with a first heat exchange inlet; the top of the front end of the second heat exchanging part is provided with a second heat exchanging outlet, the top of the tail end of the second heat exchanging part is provided with a second heat exchanging inlet, and the bottom of the tail end of the second heat exchanging part is provided with a heat flow outlet. The plate heat exchanger is horizontal in installation, twice heat exchange is realized by using the plate provided by the invention, and meanwhile, two sets of systems are heated, so that the heat exchange efficiency is improved and the energy is saved on the basis of saving the space.

Description

Single-heat-source double-system heat exchanger plate and plate heat exchanger
Technical Field
The invention relates to the technical field of heat exchange equipment, in particular to a single heat source double-system heat exchanger plate and a plate heat exchanger.
Background
The detachable plate heat exchanger is the most common heat exchange equipment at present, and the main functions of the detachable plate heat exchanger are heat exchange, pressure isolation, medium isolation and the like. In recent years, problems often appear in the central heating transformation process of old urban areas in the north of China: 1. two different forms of floor heating (working conditions of 45 ℃/55 ℃ and 10 ℃ temperature difference) and radiator heating (working conditions of 60 ℃/80 ℃ and 20 ℃ temperature difference) in the same heating area are mixed; 2. the same heating area needs heating (closed system) and domestic water (open system); 3. heat source piping systems in over 90% of cities have not been able to meet the heating needs found in cities now or in the last three years. When a new heat source is discovered, the utilization rate of the existing heat source pipe network is improved to be an economic and effective method.
The existing plate heat exchanger can only heat the medium in one system, and if two systems need to be processed, two heat exchangers are required to be used for heating respectively. However, when two heat exchangers are used for heat exchange respectively, problems of insufficient heat exchange of a heat source, large occupied space, overhigh operation and the like can occur.
Disclosure of Invention
The present invention is directed to solving the above problems, and provides a single heat source dual-system heat exchanger plate and a plate heat exchanger, which can fully utilize heat sources to achieve the purpose of heating two systems, namely, a radiator heating system or a floor heating system, or heating a domestic water system.
The invention is realized by the following technical scheme in order to achieve the purpose:
a single heat source double-system heat exchanger plate comprises a first heat exchange part and a second heat exchange part, wherein the second heat exchange part is integrally connected to the oblique upper part of the tail end of the first heat exchange part and is symmetrical to the first heat exchange part at the original point to form a step shape;
the top of the front end of the first heat exchange part is provided with a heat flow inlet, the bottom of the first heat exchange part is provided with a first heat exchange outlet, and the bottom of the tail end of the first heat exchange part is provided with a first heat exchange inlet; the top of the front end of the second heat exchanging part is provided with a second heat exchanging outlet, the top of the tail end of the second heat exchanging part is provided with a second heat exchanging inlet, and the bottom of the tail end of the second heat exchanging part is provided with a heat flow outlet.
Furthermore, the middle parts of the front ends of the first heat exchanging parts and the tail end edges of the second heat exchanging parts are respectively provided with a first guide groove and a second guide groove.
Furthermore, the tail end of the first heat exchange part and the front end edge of the second heat exchange part are respectively provided with a third guide groove and a fourth guide groove.
The invention also provides a single heat source double-system plate heat exchanger with the single heat source double-system heat exchanger plate in any scheme, which comprises the plate, a first pressing plate, a second pressing plate, a clamping bolt and a sealing gasket, wherein the second pressing plate is connected with the first pressing plate in parallel through the clamping bolt, the plate is at least 4 groups, the plate is turned over at intervals and is fixed between the first pressing plate and the second pressing plate in a stacking mode, transverse herringbone corrugated grooves of two adjacent plates are opposite and corresponding to each other, the sealing gasket is fixedly arranged between the two adjacent plates, one side of the plate is a heat flow channel, and the other side of the plate is a first heat exchange channel and a second heat exchange channel.
Further, the plate edge is positioned and installed between the first pressing plate and the second pressing plate through a guide rod.
Furthermore, the sealing gasket comprises a first sealing gasket arranged on one side of the plate, and a second sealing gasket and a third sealing gasket arranged on the other side of the plate, and the first sealing gasket encloses the heat flow inlet and the heat flow outlet of the plate into a heat flow channel; the second sealing washer encloses the first heat exchange outlet and the first heat exchange inlet to form a first heat exchange channel; the third sealing washer encloses into the second heat transfer passageway second heat transfer export and second heat transfer import.
Further, the second sealing washer and the third sealing washer are connected into a whole.
Furthermore, the first sealing washer is provided with a drainage port at the joint of the first heat exchanging part and the second heat exchanging part.
Further, the drainage port is inclined at 45 °.
Furthermore, a heat flow inlet, a first heat exchange outlet, a first heat exchange inlet, a second heat exchange outlet, a second heat exchange inlet and a heat flow outlet of the plate are sequentially and correspondingly arranged on the first pressing plate, and the first heat exchange inlet, the second heat exchange outlet, the second heat exchange inlet and the heat flow outlet of the plate.
Compared with the prior art, the plate heat exchanger is installed in a horizontal mode, high-temperature water or steam enters the heat flow inlet pipe orifice and exchanges heat through the heat flow channel by using the plate sheets, cold source water from the first heat exchange inlet pipe orifice is heated, and the heated water flows out from the first heat exchange outlet pipe orifice. High-temperature water of plate heat exchanger in the past can be taken back through the return water pump after once supplying heat, and this heat exchanger can be with the high-temperature water after the cooling, through the drainage in the plate, realizes heat transfer heat supply for the second time, and the second kind of cold source water advances the mouth of pipe from the second heat transfer and gets into, and the second heat transfer is discharged from the mouth of pipe after heaing up, and high-temperature water is discharged from the thermal current mouth of pipe after the cooling for the second time. Therefore, heat exchange is performed twice, and meanwhile, the two sets of systems are heated, so that the heat exchange efficiency is improved and the energy is saved on the basis of saving the space.
Drawings
FIG. 1 is a schematic structural view of a heat exchanger plate of the present invention;
FIG. 2 is a schematic view of the overall structure of the plate heat exchanger of the present invention;
FIG. 3 is a schematic structural diagram of an inner plate and a side sealing gasket of the plate heat exchanger;
FIG. 4 is a schematic view of a gasket structure on one side of a plate;
fig. 5 is a structural diagram of a sealing gasket on the other side of the plate.
In the figure, 1, a plate; 1-1, a first heat exchanging part; 1-2, a second heat exchanging part; 1-3, transverse herringbone corrugated grooves; 1-4, a heat flow inlet; 1-5, a first heat exchange outlet; 1-6, a first heat exchange inlet; 1-7 and a second heat exchange outlet; 1-8 second heat exchange inlets; 1-9, a heat flow outlet; 1-10, a first guide groove; 1-11, a second guide groove; 1-12, a third guide groove; 1-13, a fourth guide groove; 2. a first compression plate; 2-1, hot flow tube inlet; 2-2, an outlet of the first heat exchange tube; 2-3, an inlet of the first heat exchange tube; 2-4, an outlet of the second heat exchange pipe; 2-5, an inlet of a second heat exchange tube; 2-6, hot flow tube outlet; 3. a second compression plate; 4. clamping the bolt; 5 sealing the gasket; 5-1 a first sealing gasket; 5-2, a second sealing gasket; 5-3, a third sealing gasket; 5-4, a drainage port; 6. a guide rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the plate sheet 1 of the single heat source dual-system heat exchanger of the present invention includes a first heat exchanging portion 1-1 and a second heat exchanging portion 1-2, the second heat exchanging portion 1-2 is integrally connected to the end of the first heat exchanging portion 1-1 obliquely above and is symmetrical to the first heat exchanging portion 1-1 at the origin, and forms a step shape, and the middle portions of the first heat exchanging portion 1-1 and the second heat exchanging portion 1-2 are all equidirectional transverse herringbone corrugated grooves 1-3;
the top of the front end of the first heat exchanging part 1-1 is provided with a heat flow inlet 1-4, the bottom is provided with a first heat exchanging outlet 1-5, and the bottom of the tail end of the first heat exchanging part 1-1 is provided with a first heat exchanging inlet 1-6; the top of the front end of the second heat exchanging part 1-2 is provided with a second heat exchanging outlet 1-7, the top of the tail end is provided with a second heat exchanging inlet 1-8, and the bottom of the tail end of the second heat exchanging part 1-2 is provided with a heat flow outlet 1-9.
In a preferred embodiment, the front end of the first heat exchanging part 1-1 and the middle part of the edge of the tail end of the second heat exchanging part 1-2 are respectively provided with a first guide groove 1-10 and a second guide groove 1-11.
In another preferred embodiment, the end of the first heat exchanging part 1-1 and the edge of the front end of the second heat exchanging part 1-2 are respectively provided with a third guide groove 1-12 and a fourth guide groove 1-13.
As shown in fig. 2 and 3, the invention further provides a single heat source dual-system plate heat exchanger with the single heat source dual-system heat exchanger plate, which comprises a plate 1, a first pressing plate 2, a second pressing plate 3, a clamping bolt 4 and a sealing washer 5, wherein the second pressing plate 3 is connected with the first pressing plate 2 in parallel through the clamping bolt 4, the plate 1 is at least 4 groups, the plate 1 is turned and stacked at intervals and fixed between the first pressing plate 2 and the second pressing plate 3, transverse herringbone corrugated grooves 1-3 of two adjacent plates 1 are opposite, the sealing washer 5 is fixedly arranged between the two adjacent plates 1, one side of the plate 1 is a heat flow channel, and the other side of the plate 1 is a first heat exchange channel and a second heat exchange channel.
In a preferred embodiment, the edge of the plate 1 is positioned and mounted between the first compression plate 2 and the second compression plate 3 by a guide rod 6.
As shown in fig. 4 and 5, in a preferred embodiment, the sealing gasket 5 comprises a first sealing gasket 5-1 installed at one side of the plate 1 and a second sealing gasket 5-2 and a third sealing gasket 5-3 installed at the other side of the plate 1, and preferably, the second sealing gasket 5-2 and the third sealing gasket 5-3 are integrally connected. The first sealing washer 5-1 encloses the heat flow inlet 1-4 and the heat flow outlet 1-9 of the plate 1 into a heat flow channel; the second sealing washer 5-2 encloses the first heat exchange outlet 1-5 and the first heat exchange inlet 1-6 into a first heat exchange channel; and the second heat exchange outlet 1-7 and the second heat exchange inlet 1-8 are enclosed into a second heat exchange channel by a third sealing washer 5-3.
In a preferred embodiment, the first sealing gasket 5-1 is provided with a drainage port 5-4, preferably inclined at 45 °, at the junction of the first heat exchange portion 1-1 and the second heat exchange portion 1-2.
In a specific embodiment, the first pressure strip 2 is provided with a heat flow inlet 2-1, a first heat exchange outlet 2-2, a first heat exchange inlet 2-3, a second heat exchange outlet 2-4, a second heat exchange inlet 2-5 and a heat flow outlet 2-6 corresponding to the heat flow inlet 1-4, the first heat exchange outlet 1-5, the second heat exchange outlet 1-7, the second heat exchange inlet 1-8 and the heat flow outlet 1-9 of the plate 1 in sequence.
The detachable single-heat-source double-system plate heat exchanger is horizontally installed, as shown in figure 1, high-temperature water or steam enters a hot-flow inlet pipe orifice 2-1, cold source water in a first heat exchange inlet pipe orifice 2-3 is heated through heat exchange, and the heated water is discharged from a first heat exchange outlet pipe orifice 2-2. The high-temperature water of the prior plate heat exchanger is pumped back by a water return pump after primary heat supply. The heat exchanger can lead the cooled high-temperature water to flow in the plates to realize secondary heat supply, the second cold source water enters from the second heat exchange inlet pipe orifice 2-5, is discharged from the second heat exchange outlet pipe orifice 2-4 after being heated, and is discharged from the pipe orifice 6 after the high-temperature water is cooled for the second time.
The plate heat exchanger plate of this type has very high requirements on the machining precision, and the plate needs to be symmetrical at the origin, namely, at 45 degrees. The transverse herringbone corrugated grooves 1-3 of the plate sheet 1 are designed by adopting half grooves, so that diversified assembly modes can be realized, and the symmetry degree is high. As shown in fig. 2, the sheet 1 can still form net-shaped corrugations after being flipped upside down.
The multi-group guide groove structure of the plate 1 ensures the installation stability of the plate 1, the middle groove of the plate 1 is drained by the sealing washer, and the heat source medium supplies heat for the cold source. The hot flow channel is guided by the drainage ports 5-4 to supply heat for a second cold source, and the heat source is fully utilized to supply heat for two sets of systems of a radiator heating system or a floor heating system or a domestic water system. The detachable plate heat exchanger with the single heat source and the double systems has the advantages that the heat exchange efficiency is improved and the energy is saved on the basis of saving the space.
When the heat pump is used in practical tests, the heat load of a heating district with 2 ten thousand square meters is 1400KW, the primary heat source is 110 ℃, a radiator is arranged for heating 700KW, the temperature of secondary side water supply is 80 ℃, and the temperature of secondary side return water is 60 ℃; the secondary side water supply temperature of 700KW for floor heating is 55 ℃, and the secondary side water return temperature is 45 ℃.
The main calculation formula is as follows:
Q-G1 × Cp1 × (T1 in-T1 out) G2 × Cp2 × (T2 in-T2 out)
Q ═ heat exchange amount KW
G1-heat medium flow kg/s × 3.6.6-T/h
The Cp1 has a specific heat capacity KJ/kg ℃ of 4.19 or so in general
T1 inlet temperature-inlet temperature of heat medium-C
Inlet temperature of heat medium T1
In the prior art, two heat exchangers are used, wherein the working condition of a 700KW radiator is that a primary heat source is 110 ℃, the return water temperature is 70 ℃, and the primary network flow is 15m3/h according to calculation. The primary heat source of a 700KW floor heating working condition is 110 ℃, the return water temperature is 50 ℃, and the primary net flow is 10m3/h according to calculation. Therefore, the flow of the primary heating network for the district is 25m in total3/h。
If a 1400KW single-heat-source double-system plate heat exchanger is selected, a primary heat source enters from 110 ℃, heat exchange is carried out through a first section, and a radiator is adoptedThe temperature of the warm secondary side water is increased from 60 ℃ to 80 ℃, the temperature of the heat source water is reduced to 78.9 ℃, then the water flows into the second section, the temperature of the ground heating secondary side water is increased from 45 ℃ to 55 ℃, the temperature of the return water is 50 ℃, and the flow of the primary network is 20m according to calculation3/h。
Therefore, the single heat source double-system plate heat exchanger using the invention uses less 5m than the prior two plate heat exchangers3The heat source is used for h, and the heat exchange efficiency is improved by 20 percent.
The embodiments of the present invention are merely illustrative and not restrictive, and those skilled in the art can modify the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims of the present invention.

Claims (10)

1. The single-heat-source double-system heat exchanger plate is characterized in that the plate (1) comprises a first heat exchange part (1-1) and a second heat exchange part (1-2), wherein the second heat exchange part is integrally connected to the oblique upper part of the tail end of the first heat exchange part and is symmetrical to the first heat exchange part at the original point to form a step shape, and the middle parts of the first heat exchange part and the second heat exchange part are both provided with equidirectional transverse herringbone corrugated grooves (1-3);
the top of the front end of the first heat exchange part is provided with a heat flow inlet (1-4), the bottom of the first heat exchange part is provided with a first heat exchange outlet (1-5), and the bottom of the tail end of the first heat exchange part is provided with a first heat exchange inlet (1-6); the top of the front end of the second heat exchanging part is provided with a second heat exchanging outlet (1-7), the top of the tail end is provided with a second heat exchanging inlet (1-8), and the bottom of the tail end is provided with a heat flow outlet (1-9).
2. The single heat source double system heat exchanger plate of claim 1, wherein the first guide groove (1-10) and the second guide groove (1-11) are respectively formed in the middle of the front end of the first heat exchange part and the tail end edge of the second heat exchange part.
3. The single heat source dual system heat exchanger plate according to claim 1 or 2, wherein the end of the first heat exchanging part and the end edge of the front end of the second heat exchanging part are provided with a third channel (1-12) and a fourth channel (1-13), respectively.
4. A single heat source double-system plate heat exchanger with the single heat source double-system heat exchanger plate of any one of claims 1-3 is characterized by comprising a plate (1), a first pressing plate (2), a second pressing plate (3), a clamping bolt (4) and a sealing washer (5), wherein the second pressing plate is connected with the first pressing plate in parallel through the clamping bolt, the plate is at least 4 groups, the plates are turned at intervals and are fixed between the first pressing plate and the second pressing plate in a stacked mode, transverse herringbone corrugated grooves of two adjacent plates are in reverse correspondence, the sealing washer is fixedly installed between the two adjacent plates, one side of the plate is a heat flow channel, and the other side of the plate is a first heat exchange channel and a second heat exchange channel.
5. The single heat source dual system plate heat exchanger according to claim 4, characterized in that the plate edge is positioned between the first and second pressure plate by means of a guide rod (6).
6. The single heat source dual system plate heat exchanger of claim 4, characterized in that the sealing gaskets comprise a first sealing gasket (5-1) installed on one side of the plate and a second sealing gasket (5-2) and a third sealing gasket (5-3) installed on the other side of the plate, the first sealing gasket enclosing the heat flow inlet and the heat flow outlet of the plate into heat flow channels; the second sealing washer encloses the first heat exchange outlet and the first heat exchange inlet into a first heat exchange channel; the third sealing washer encloses into the second heat transfer passageway second heat transfer export and second heat transfer import.
7. The single heat source dual system plate heat exchanger of claim 6 wherein the second sealing gasket is integrally connected to the third sealing gasket.
8. The single heat source dual system plate heat exchanger according to claim 6, wherein the first sealing gasket is provided with a flow guiding port (5-4) at the junction of the first heat exchanging part and the second heat exchanging part.
9. The single heat source dual system plate heat exchanger of claim 8 wherein the flow-through ports are 45 ° slanted.
10. The single-heat-source double-system plate heat exchanger as claimed in claim 4, wherein the heat flow pipe inlet (2-1), the first heat exchange pipe outlet (2-2), the first heat exchange pipe inlet (2-3), the second heat exchange pipe outlet (2-4), the second heat exchange pipe inlet (2-5) and the heat flow pipe outlet (2-6) are sequentially arranged on the first pressure plate and correspond to the heat flow inlet, the first heat exchange outlet, the first heat exchange inlet, the second heat exchange outlet, the second heat exchange inlet and the heat flow outlet of the plate.
CN202010299172.9A 2020-04-15 2020-04-15 Single-heat-source double-system heat exchanger plate and plate heat exchanger Pending CN111336845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010299172.9A CN111336845A (en) 2020-04-15 2020-04-15 Single-heat-source double-system heat exchanger plate and plate heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010299172.9A CN111336845A (en) 2020-04-15 2020-04-15 Single-heat-source double-system heat exchanger plate and plate heat exchanger

Publications (1)

Publication Number Publication Date
CN111336845A true CN111336845A (en) 2020-06-26

Family

ID=71182976

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010299172.9A Pending CN111336845A (en) 2020-04-15 2020-04-15 Single-heat-source double-system heat exchanger plate and plate heat exchanger

Country Status (1)

Country Link
CN (1) CN111336845A (en)

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