CN111895825A - High-efficiency plate heat exchanger - Google Patents
High-efficiency plate heat exchanger Download PDFInfo
- Publication number
- CN111895825A CN111895825A CN202010907863.2A CN202010907863A CN111895825A CN 111895825 A CN111895825 A CN 111895825A CN 202010907863 A CN202010907863 A CN 202010907863A CN 111895825 A CN111895825 A CN 111895825A
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- China
- Prior art keywords
- plate
- heat transfer
- cleaning liquid
- cleaning
- inlet pipe
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Classifications
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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
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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
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/003—Control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G2015/006—Arrangements for processing a cleaning fluid after use, e.g. filtering and recycling
Abstract
The invention discloses a high-efficiency plate heat exchanger, and belongs to the technical field of heat exchangers. The plate heat exchanger comprises an upper guide rod, a lower guide rod, a fixed compression plate, a support column, a movable compression plate, a heat transfer plate assembly, a limiting rod and a cleaning assembly; the plate surface of the heat transfer plate is provided with an upper shunting area, a heat transfer area and a lower shunting area, the upper shunting area is internally provided with a plurality of lugs for dividing the upper shunting area into a plurality of shunting grooves, and a plurality of current restraining blocks with the height lower than the lugs are arranged in the shunting grooves below the corner holes at one side with the shorter length of the shunting grooves at equal intervals; the cleaning component comprises a water inlet pipe, a circulating cleaning liquid inlet pipe, a cleaning water tank, a circulating cleaning liquid outlet pipe, a water outlet pipe and a circulating cleaning pump; one end of the circulating cleaning liquid inlet pipe is connected with the water inlet pipe and the cold medium inlet pipe, and the other end of the circulating cleaning liquid inlet pipe is communicated with a liquid inlet arranged on the cleaning water tank; one end of the circulating cleaning liquid outlet pipe is communicated with a liquid outlet arranged on the cleaning water tank, and the other end of the circulating cleaning liquid outlet pipe is communicated with a water outlet pipe and a cold medium outlet pipe. The invention has simple structure and high heat transfer efficiency.
Description
Technical Field
The invention relates to a plate heat exchanger, in particular to a high-efficiency plate heat exchanger, and belongs to the technical field of heat exchangers.
Background
The plate heat exchanger is a new type heat exchanger formed by a series of metal heat-transfer plates with certain corrugated shapes which are pressed and stacked through rubber sealing gaskets according to certain intervals. Four corner holes on the heat transfer plates of the plate heat exchanger form a distribution pipe and a discharge pipe of heat exchange media, and the two heat exchange media respectively flow into respective flow channels to form countercurrent or cocurrent flow to exchange heat through each plate.
The shape and structure of the heat transfer plates have an important influence on the heat transfer efficiency of the plate heat exchanger, and how to reasonably design the shape and structure of the heat transfer plates to improve the heat transfer efficiency of the plate heat exchanger is a hot spot of current research. The invention patent with publication number CN210154389U discloses a plate heat exchanger, which has a heat transfer plate with a flow dividing region and a heat transfer region, and can improve the uniformity of fluid flowing in the heat transfer region to a certain extent so as to improve the heat transfer efficiency, but the resistance difference caused by different lengths of the liquid flow channels in the flow dividing region is liable to cause the phenomena of bias flow and uneven heat conduction in the heat transfer region, and the heat transfer efficiency of the plate heat exchanger still needs to be improved. In addition, when cold water is used as a cold medium in the plate heat exchanger, the temperature of the cold water is increased in the operation process of the heat exchanger, so that calcium and magnesium ions in the water are easily separated out, and therefore, after the plate heat exchanger is operated for a long time, a deposit which can be deposited in the cooling liquid side of the plate heat exchanger can generate a scale layer on the heat transfer plate, the scale layer can generate additional thermal resistance, the total heat transfer coefficient is reduced, and the heat transfer efficiency of the heat exchanger is obviously reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a high-efficiency plate heat exchanger to improve the heat transfer efficiency of the plate heat exchanger.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a high-efficiency plate heat exchanger comprises an upper guide rod, a lower guide rod, a fixed compression plate, a support column, a movable compression plate, a heat transfer plate assembly, a limiting rod and a cleaning assembly; the fixed compression plate is fixed between the upper guide rod and the lower guide rod, one side of the front end face of the fixed compression plate is provided with a hot medium inlet connected with a hot medium inlet pipe and a hot medium outlet connected with a hot medium outlet pipe, the other side of the front end face of the fixed compression plate is provided with a cold medium inlet connected with a cold medium inlet pipe and a cold medium outlet connected with a cold medium outlet pipe, and the cold medium inlet pipe and the cold medium outlet pipe are respectively provided with a cold medium inlet valve and a cold medium outlet valve; the supporting column is fixed between the upper guide rod and the lower guide rod; the movable pressing plate is arranged between the fixed pressing plate and the supporting column and is parallel to the fixed pressing plate, and the upper end and the lower end of the movable pressing plate are respectively connected with the upper guide rod and the lower guide rod in a sliding manner; the heat transfer plate assembly is arranged between the fixed compression plate and the movable compression plate and comprises a plurality of heat transfer plate sheets which are arranged in a stacked mode, wherein two adjacent heat transfer plate sheets are horizontally and reversely stacked for 180 degrees, the four corners of each heat transfer plate sheet are provided with corner holes, the corner holes are communicated with the cold and hot medium inlet and outlet, and the plate surfaces of the heat transfer plate sheets are provided with sealing gaskets for preventing liquid from leaking; the plate surface of the heat transfer plate is provided with an upper shunting area, a lower shunting area and a heat transfer area, the upper shunting area is arranged close to an angle hole at the top of the heat transfer plate, the upper shunting area is in an isosceles triangle shape, a plurality of convex blocks are arranged in the upper shunting area, the convex blocks divide the upper shunting area into a plurality of shunting grooves parallel to the waist of the triangle, a plurality of flow restraining blocks are arranged in the shunting grooves below the angle hole at one side of the shorter length of the shunting grooves at equal intervals, the flow restraining blocks are protrusions connected with the convex blocks at two sides of the shunting grooves, and the height of the flow restraining blocks is lower than that of the convex; the lower shunting area is arranged close to the corner hole at the bottom of the heat transfer plate, and the lower shunting area and the upper shunting area are in a horizontal symmetrical structure; the heat transfer area is positioned between the upper shunting area and the lower shunting area and is of a corrugated structure; the limiting rods are arranged on two sides of the heat transfer plate assembly and used for limiting two sides of the heat transfer plate; the cleaning assembly comprises a water inlet pipe, a circulating cleaning liquid inlet pipe, a cleaning water tank, a circulating cleaning liquid outlet pipe and a water outlet pipe; a water inlet valve is arranged on the water inlet pipe; one end of the circulating cleaning liquid inlet pipe is connected with the water inlet pipe and the cold medium inlet pipe through a tee joint, the other end of the circulating cleaning liquid inlet pipe is communicated with a liquid inlet arranged on the cleaning water tank, and a cleaning liquid inlet valve is arranged on the circulating cleaning liquid inlet pipe; one end of the circulating cleaning liquid outlet pipe is communicated with a liquid outlet arranged on the cleaning water tank, the other end of the circulating cleaning liquid outlet pipe is communicated with a water outlet pipe and a cold medium outlet pipe through a tee joint, and a circulating cleaning pump and a cleaning liquid outlet valve are arranged on the circulating cleaning liquid outlet pipe; and a water outlet valve is arranged on the water outlet pipe. The invention has simple structure and high heat transfer efficiency; the shape of the shunting area on the plate surface of the heat transfer plate is improved, so that the resistance difference caused by different lengths of the shunting grooves can be overcome, and the heat exchange medium flows more uniformly in the heat transfer area, thereby obviously improving the heat transfer efficiency of the plate heat exchanger; through setting up and entering pipe and cold medium exit tube matched with washing subassembly with cold medium can make plate heat exchanger have two kinds of modes of normal operating and washing, when plate heat exchanger's coolant liquid side produced the dirt layer, only need close water intaking valve and outlet valve, start the washing mode and can adopt the washing liquid to wash repeatedly with the heat transfer board of plate heat exchange inside with the dirt layer and get rid of the heat transfer efficiency of heat exchanger further.
As the preferred scheme, be equipped with the baffle of vertical setting in the washing water tank, certain clearance is left with the top of wasing the water tank to the baffle, and the baffle will wash the water tank and separate into settling zone and clear liquid district, and wherein, the inlet is located the settling zone top, and the liquid outlet is located clear liquid district top. Through setting up the baffle can carry out purification treatment to the circulation washing liquid that gets into the washing water tank, make the dirt that carries in the washing liquid deposit in the settling zone after once only circulating cleaning to improve the quality of water that washs the water tank and go out water, improve the cleaning performance of washing liquid to the heat transfer slab when circulating the washing once more greatly.
As a further preferred scheme, the cleaning assembly further comprises a drain pipe, the drain pipe is communicated with a drain outlet arranged at the bottom of the settling zone of the cleaning water tank, and a drain valve is arranged on the drain pipe.
As a preferred scheme, a filter screen is arranged at the water outlet of the cleaning water tank. Through setting up the filter screen not only can prevent that the circulation scavenging pump from blockking up, can also promote the quality of water that washs the water tank and go out water to improve the cleaning performance of washing liquid to the heat transfer slab when recycling once more washs.
Preferably, the cold medium inlet valve, the cold medium outlet valve, the water inlet valve, the cleaning liquid outlet valve, the water outlet valve and the blowdown valve are all electromagnetic valves electrically connected with the control system.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the stationary platen of the present invention;
FIG. 3 is a schematic view of the construction of a heat transfer plate of the present invention;
reference numerals:
10. upper guide rod 20, lower guide rod 30, fixed pressing plate 31, heat medium inlet 32, heat medium outlet 33, cold medium inlet 34, cold medium outlet 40, heat transfer plate 41, angle hole 42, sealing pad 43, upper flow distribution area 431, projection 432, flow distribution groove 433, flow suppression block 44, heat transfer area 45, lower flow distribution area 50, movable pressing plate 60, support column 70, limiting rod 81, cold medium inlet pipe 811, cold medium inlet valve 82, cold medium outlet pipe 821, cold medium outlet valve 83, water inlet pipe 831, water inlet valve 84, circular cleaning liquid inlet pipe 841, cleaning liquid inlet valve 85, cleaning water tank 851, filter screen 852, deposition area 854, cleaning liquid area 86, circular cleaning liquid outlet pipe 861, circular cleaning pump 862, cleaning liquid outlet valve 87, water outlet pipe 871, water outlet valve 88, sewage outlet pipe 881, sewage discharge valve 881
Detailed Description
An embodiment of the present invention is described in detail with reference to fig. 1 to 3, but the present invention is not limited in any way by the claims.
As shown in fig. 1 to 3, a high-efficiency plate heat exchanger includes an upper guide rod 10, a lower guide rod 20, a fixed pressure plate 30, a support pillar 60, a movable pressure plate 50, a heat transfer plate assembly, a limiting rod 70 and a cleaning assembly;
the fixed compression plate 30 is fixed between the upper guide rod 10 and the lower guide rod 20, one side of the front end surface of the fixed compression plate 30 is provided with a heat medium inlet 31 connected with a heat medium inlet pipe (not shown in the figure) and a heat medium outlet 32 connected with a heat medium outlet pipe (not shown in the figure), the other side is provided with a cold medium inlet 33 connected with a cold medium inlet pipe 81 and a cold medium outlet 34 connected with a cold medium outlet pipe 82, wherein the cold medium inlet pipe 81 and the cold medium outlet pipe 82 are respectively provided with a cold medium inlet valve 811 and a cold medium outlet valve 821;
the supporting column 60 is fixed between the upper guide rod 10 and the lower guide rod 20;
the movable pressing plate 50 is arranged between the fixed pressing plate 30 and the supporting column 60 and is parallel to the fixed pressing plate 30, and the upper end and the lower end of the movable pressing plate 50 are respectively connected with the upper guide rod 20 and the lower guide rod 20 in a sliding manner;
the heat transfer plate assembly is arranged between the fixed compression plate 30 and the movable compression plate 50 and comprises a plurality of heat transfer plate sheets 40 which are arranged in a stacked mode, wherein two adjacent heat transfer plate sheets 40 are horizontally stacked in a 180-degree reverse mode; the four corners of the heat transfer plate 40 are all provided with corner holes 41, the four corner holes 41 are respectively communicated with four medium inlets and outlets (a heat medium inlet and a heat medium outlet, and a cold medium inlet and a cold medium outlet), and the plate surface of the heat transfer plate 40 is provided with a sealing gasket 42 for preventing liquid from leaking; an upper flow distribution area 43, a lower flow distribution area 45 and a heat transfer area 44 are arranged on the plate surface of the heat transfer plate 40, the upper flow distribution area 43 is arranged close to an angle hole 41 positioned at the top of the heat transfer plate 40, the upper flow distribution area 43 is in an isosceles triangle shape, a plurality of bumps 431 are arranged in the upper flow distribution area 43, the bumps 431 divide the upper flow distribution area 43 into a plurality of flow distribution grooves 432 parallel to the waist of the triangle, a plurality of flow restraining blocks 433 are arranged in the flow distribution grooves 432 below the angle hole 41 positioned at the side with the shorter length of the flow distribution grooves at equal intervals, the flow restraining blocks 433 are protrusions connecting the bumps 431 at the two sides of the flow distribution grooves 432, and the height of the flow restraining blocks; the lower shunting area 45 is arranged close to the corner hole 41 at the bottom of the heat transfer plate 40, and the lower shunting area 45 and the upper shunting area 43 are in a horizontal symmetrical structure; the heat transfer region 44 is located between the upper diverging region 43 and the lower diverging region 45, the heat transfer region 44 having a corrugated structure;
the limiting rods 70 are arranged on two sides of the heat transfer plate 40 assembly and used for limiting two sides of the heat transfer plate 40;
the cleaning component comprises a water inlet pipe 83, a circulating cleaning liquid inlet pipe 84, a cleaning water tank 85, a circulating cleaning liquid outlet pipe 86, a water outlet pipe 87 and a sewage discharge pipe 88; a water inlet valve 831 is arranged on the water inlet pipe 83; one end of the circulating cleaning liquid inlet pipe 84 is connected with the water inlet pipe 83 and the cold medium inlet pipe 81 through a tee joint, the other end of the circulating cleaning liquid inlet pipe 84 is communicated with a liquid inlet arranged on the cleaning water tank 85, and a cleaning liquid inlet valve 841 is arranged on the circulating cleaning liquid inlet pipe 84; the cleaning water tank 85 is filled with cleaning liquid, wherein a liquid supplementing port (not shown in the figure) for supplementing the cleaning liquid is arranged on the cleaning water tank; one end of the circulating cleaning liquid outlet pipe 86 is communicated with a liquid outlet arranged on the cleaning water tank 85, the other end of the circulating cleaning liquid outlet pipe 86 is communicated with the water outlet pipe 87 and the cold medium outlet pipe 82 through a tee joint, and a circulating cleaning pump 861 and a cleaning liquid outlet valve 862 are arranged on the circulating cleaning liquid outlet pipe 86; the water outlet pipe 87 is provided with a water outlet valve 871; the drain pipe 88 is communicated with a drain outlet arranged on the cleaning water tank 85, and a drain valve 881 is arranged on the drain pipe 88;
in order to improve the cleaning effect of the cleaning liquid which is circulated for many times on the heat transfer plate 40, a filter screen 851 is arranged at a water outlet of the cleaning water tank 85, a vertically arranged partition plate 852 is arranged in the cleaning water tank 85, a certain gap is reserved between the partition plate 852 and the top of the cleaning water tank 85, the cleaning water tank 85 is divided into a settling area 853 and a clear liquid area 854 by the partition plate 852, wherein a liquid inlet is positioned above the settling area 853, a liquid outlet is positioned above the clear liquid area 854, and a sewage outlet is positioned in the settling area 853;
in order to improve the working efficiency of the cleaning assembly, the cold medium inlet valve, the cold medium outlet valve, the water inlet valve, the cleaning liquid outlet valve, the water outlet valve and the blow-down valve are all electromagnetic valves electrically connected with a control system (not shown in the figure).
Instructions for use:
closing a cleaning liquid inlet valve 841 and a cleaning liquid outlet valve 862, opening a cold medium inlet valve 811 and a cold medium outlet valve 821, opening a water inlet valve 831 and a water outlet valve 871, opening valves on a heat medium inlet and outlet pipe, enabling the plate heat exchanger to enter a normal operation mode, enabling cooling water to enter the plate heat exchanger from a water inlet pipe 83 through a cold medium inlet pipe 81 and a cold medium inlet, enabling the cooling water to exchange heat with a heat medium entering the plate heat exchanger, and enabling the cooling water to flow out through a cold medium outlet, a cold medium outlet pipe 82 and a water outlet pipe 87;
when a scale layer is generated on the cooling liquid side of the plate heat exchanger, the valve on the heat medium inlet and outlet pipe is closed, the water inlet valve 831 and the water outlet valve 871 are closed, the cleaning liquid inlet valve 841 and the cleaning liquid outlet valve 862 are opened, the plate heat exchanger enters a cleaning mode, the circulating cleaning pump 861 is started, cleaning liquid in the cleaning water tank 85 under the operation of the circulating cleaning pump 861 firstly enters the plate heat exchanger through the circulating clear liquid outlet pipe 86, the cold medium outlet pipe 82 and the cold medium outlet to reversely flush the heat transfer plate sheet on the cooling liquid side, then the cleaning liquid carrying the scale flows back to the cleaning water tank 85 through the cold medium inlet, the cold medium inlet pipe 81 and the circulating cleaning liquid inlet pipe 84, and the cleaning process is repeatedly circulated until the scale on the heat transfer plate sheet is thoroughly removed.
When the filter screen 851 and the partition plate 852 are arranged on the cleaning water tank 85, cleaning liquid carrying dirt after the heat transfer plate 40 is cleaned for the first time flows back into the cleaning water tank 85, most of the dirt in the cleaning liquid is deposited in the settling zone 853 and can be discharged through the drain pipe 88, the cleaning liquid containing a small amount of dirt flows into the cleaning liquid zone 854, is filtered by the filter screen 851 and then flows out to the circulating cleaning liquid outlet pipe 86, and then the heat transfer plate is cleaned for the second time and for multiple times.
After the cleaning liquid in the cleaning water tank 85 is recycled for many times, the cleaning liquid in the cleaning water tank 85 needs to be replaced, at this time, the cold medium inlet valve 811 and the cleaning liquid outlet valve 862 need to be closed first, the inlet valve 831 and the drain valve 881 need to be opened, the dirt in the cleaning water tank 85 is discharged from the drain pipe 88 by the cooling water flowing in from the inlet pipe 83, and then the clean cleaning liquid is replenished into the cleaning water tank 85 from the liquid replenishing port.
In summary, the invention has the following advantages:
1. the invention has simple structure and high heat transfer efficiency; the shape of the flow dividing region 43 on the plate surface of the heat transfer plate 40 is improved, so that the resistance difference caused by different lengths of the flow dividing grooves 432 can be overcome, the heat exchange medium flows more uniformly in the heat transfer region 44, and the heat transfer efficiency of the plate heat exchanger is obviously improved; the plate heat exchanger can have two modes of normal operation and cleaning by arranging the cleaning component matched with the cold medium inlet pipe 81 and the cold medium outlet pipe 82, when a dirt layer is generated on the cooling liquid side of the plate heat exchanger, only the water inlet valve 831 and the water outlet valve 871 need to be closed, and the cleaning mode is started, so that the dirt layer can be removed by repeatedly flushing the heat transfer plate inside the plate heat exchanger with cleaning liquid, and the heat transfer efficiency of the heat exchanger is further improved.
2. According to the invention, the partition plate 852 is arranged to purify the circulating cleaning liquid entering the cleaning water tank 85, so that dirt carried in the cleaning liquid after primary circulating cleaning is deposited in the settling area 853, the water quality of the outlet water of the cleaning water tank 85 is improved, and the cleaning effect of the cleaning liquid on the heat transfer plate 40 during secondary circulating cleaning is greatly improved.
3. The invention can prevent the circulation cleaning pump 861 from being blocked and can improve the water quality of the outlet water of the cleaning water tank 85 by arranging the filter screen 851, thereby improving the cleaning effect of the cleaning liquid on the heat transfer plate 40 when the circulation cleaning is carried out again.
It should be understood that the detailed description of the invention is merely illustrative of the invention and is not intended to limit the invention to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (5)
1. A high-efficiency plate heat exchanger comprises an upper guide rod, a lower guide rod, a fixed compression plate, a support column, a movable compression plate, a heat transfer plate assembly and a limiting rod; the fixed compression plate is fixed between the upper guide rod and the lower guide rod, one side of the front end face of the fixed compression plate is provided with a hot medium inlet connected with a hot medium inlet pipe and a hot medium outlet connected with a hot medium outlet pipe, the other side of the front end face of the fixed compression plate is provided with a cold medium inlet connected with a cold medium inlet pipe and a cold medium outlet connected with a cold medium outlet pipe, and the cold medium inlet pipe and the cold medium outlet pipe are respectively provided with a cold medium inlet valve and a cold medium outlet valve; the supporting column is fixed between the upper guide rod and the lower guide rod; the movable pressing plate is arranged between the fixed pressing plate and the supporting column and is parallel to the fixed pressing plate, and the upper end and the lower end of the movable pressing plate are respectively connected with the upper guide rod and the lower guide rod in a sliding manner; the heat transfer plate assembly is arranged between the fixed compression plate and the movable compression plate and comprises a plurality of heat transfer plate sheets which are arranged in a stacked mode, wherein two adjacent heat transfer plate sheets are horizontally and reversely stacked for 180 degrees, the four corners of each heat transfer plate sheet are provided with corner holes, the corner holes are communicated with the cold and hot medium inlet and outlet, and the plate surfaces of the heat transfer plate sheets are provided with sealing gaskets for preventing liquid from leaking; the limiting rods are arranged on two sides of the heat transfer plate assembly and used for limiting two sides of the heat transfer plate; the heat transfer plate is characterized in that an upper flow distribution area, a lower flow distribution area and a heat transfer area are arranged on the plate surface of the heat transfer plate, the upper flow distribution area is arranged close to an angle hole in the top of the heat transfer plate, the upper flow distribution area is in an isosceles triangle shape, a plurality of convex blocks are arranged in the upper flow distribution area, the convex blocks divide the upper flow distribution area into a plurality of flow distribution grooves parallel to the waist of the triangle, a plurality of flow restraining blocks are arranged in the flow distribution grooves below the angle hole in the side with the shorter length of the flow distribution grooves at equal intervals, the flow restraining blocks are protrusions connected with the convex blocks on the two sides of the flow distribution grooves; the lower shunting area is arranged close to the corner hole at the bottom of the heat transfer plate, and the lower shunting area and the upper shunting area are in a horizontal symmetrical structure; the heat transfer area is positioned between the upper shunting area and the lower shunting area and is of a corrugated structure; the plate heat exchanger also comprises a cleaning assembly, wherein the cleaning assembly comprises a water inlet pipe, a circulating cleaning liquid inlet pipe, a cleaning water tank, a circulating cleaning liquid outlet pipe and a water outlet pipe; a water inlet valve is arranged on the water inlet pipe; one end of the circulating cleaning liquid inlet pipe is connected with the water inlet pipe and the cold medium inlet pipe through a tee joint, the other end of the circulating cleaning liquid inlet pipe is communicated with a liquid inlet arranged on the cleaning water tank, and a cleaning liquid inlet valve is arranged on the circulating cleaning liquid inlet pipe; one end of the circulating cleaning liquid outlet pipe is communicated with a liquid outlet arranged on the cleaning water tank, the other end of the circulating cleaning liquid outlet pipe is communicated with a water outlet pipe and a cold medium outlet pipe through a tee joint, and a circulating cleaning pump and a cleaning liquid outlet valve are arranged on the circulating cleaning liquid outlet pipe; and a water outlet valve is arranged on the water outlet pipe.
2. The high efficiency plate heat exchanger of claim 1 wherein a vertically disposed baffle is disposed in the purge water tank, the baffle having a gap with the top of the purge water tank, the baffle separating the purge water tank into a settling zone and a clear liquid zone, wherein the liquid inlet is disposed above the settling zone and the liquid outlet is disposed above the clear liquid zone.
3. The high efficiency plate heat exchanger of claim 2 wherein the cleaning assembly further comprises a drain in communication with a drain outlet at the bottom of the settling zone of the cleaning tank, the drain having a drain valve thereon.
4. The high-efficiency plate heat exchanger of claim 1, wherein a filter screen is arranged at the water outlet of the cleaning water tank.
5. The efficient plate heat exchanger as claimed in claim 3, wherein the cold medium inlet valve, the cold medium outlet valve, the water inlet valve, the cleaning liquid outlet valve, the water outlet valve and the blowdown valve are all solenoid valves electrically connected with the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010907863.2A CN111895825A (en) | 2020-09-02 | 2020-09-02 | High-efficiency plate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010907863.2A CN111895825A (en) | 2020-09-02 | 2020-09-02 | High-efficiency plate heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111895825A true CN111895825A (en) | 2020-11-06 |
Family
ID=73224791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010907863.2A Withdrawn CN111895825A (en) | 2020-09-02 | 2020-09-02 | High-efficiency plate heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111895825A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199050A (en) * | 2021-12-21 | 2022-03-18 | 扬州派斯特换热设备有限公司 | Plate heat exchanger with fully and uniformly heat exchange |
-
2020
- 2020-09-02 CN CN202010907863.2A patent/CN111895825A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199050A (en) * | 2021-12-21 | 2022-03-18 | 扬州派斯特换热设备有限公司 | Plate heat exchanger with fully and uniformly heat exchange |
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Application publication date: 20201106 |