CN210833192U - Pure countercurrent water-water heat exchanger for waste water heat energy recovery - Google Patents
Pure countercurrent water-water heat exchanger for waste water heat energy recovery Download PDFInfo
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- CN210833192U CN210833192U CN201921489391.2U CN201921489391U CN210833192U CN 210833192 U CN210833192 U CN 210833192U CN 201921489391 U CN201921489391 U CN 201921489391U CN 210833192 U CN210833192 U CN 210833192U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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Abstract
The utility model relates to a pure countercurrent water-water heat exchanger for waste water heat recovery, which belongs to a shell-and-tube water-water heat exchanger, comprising a shell body which is mutually communicated, a heat exchange tube bundle is arranged in the shell body, tube plates of fixed tube bundles are arranged at the two ends of the shell body, the tube bundles are supported by baffle groups in the shell body, the adjacent shell bodies are communicated through a U-shaped water chamber, the mixed recirculation of sewage is carried out, the two ends of the shell body are communicated with a reducing water chamber, a waste water inlet and a waste water outlet are formed, correspondingly, the shell body is provided with a clear water outlet and a clear water inlet, the waste water in the tube bundle and the clear water outside the tube bundle can carry out sufficient heat exchange through the countercurrent motion of a; the shell pass and the tube pass are designed in a multi-flow mode, the length of a single flow can be determined according to the field space, the flow structures are the same, the multi-flow mode is combined with similar modules, and the assembly is convenient.
Description
Technical Field
The utility model relates to a shell and tube water heat exchanger, in particular to a pure countercurrent water heat exchanger for waste water heat recovery.
Background
Some industrial or domestic wastewater is often generated in production and life, although the water quality is poor, the industrial or domestic wastewater has corrosion and scaling tendency, and impurities are possibly generated, the water temperature is higher, and if the heat energy in the water is recovered, the water is used for other process flows or domestic water, so that the resource recycling is realized. The high-temperature wastewater is discharged after heat energy is extracted, so that the natural environment is not greatly influenced, and the high-temperature wastewater is energy-saving and environment-friendly.
The temperature of the waste water is generally not high, and pure countercurrent heat exchange is adopted in order to recover heat energy as much as possible and improve the heat exchange water temperature. The tube side of the existing shell-and-tube water heat exchanger can adopt a multi-flow design, but the shell side adopts a cylinder body, usually one flow, at most two flows, one flow can use pure countercurrent heat exchange, but the length cannot be too long, otherwise, the slender ratio of a container is too large, the rigidity of the container is reduced, and the transportation is inconvenient. If a single cylinder is divided into two flows, the sealing process between the flows is complex, the sealing performance is difficult to guarantee, one flow is countercurrent heat exchange, the other flow is concurrent heat exchange, and pure countercurrent heat exchange cannot be achieved. Therefore, the shell pass of the conventional shell-and-tube water heat exchanger is limited by the flow, large temperature difference heat exchange is difficult to achieve, and pure countercurrent heat exchange is difficult to achieve.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's defect, the utility model provides a pure water heat exchanger against current for waste water heat recovery connects a plurality of casings through U type hydroecium, and its both ends intercommunication reducing hydroecium sets up baffle group and heat exchange tube bank as waste water entry and waste water outlet in the casing, and the clear water is between bank and casing, and the multiple flow flows flow against the current has improved its heat exchange efficiency greatly.
The technical scheme for realizing the purpose is as follows:
the utility model provides a pure countercurrent water-water heat exchanger for waste water heat energy recovery, which is provided with a communicating pipeline, the communicating pipeline comprises a plurality of mutually communicated shells, heat exchange tube bundles are arranged in the shells, tube plates for fixing the tube bundles are arranged at two ends of the shells, the communicating pipeline also comprises a plurality of U-shaped water chambers, and the U-shaped water chambers are communicated between the heat exchange tube bundles in the two adjacent shells;
the communicating pipeline is provided with a head end opening and a tail end opening, the head end opening and the tail end opening are both communicated with a reducing water chamber, and the reducing water chamber is communicated with the heat exchange tube bundle to form a wastewater inlet and a wastewater outlet;
the two ends of the shell are close to the tube plates, openings are respectively formed in the positions, communicated with the shell, between the heat exchange tube bundles, of the shell, the openings between every two adjacent shells are communicated through a connecting pipe, the opening close to the waste water inlet is a clear water outlet, the opening close to the waste water outlet is a clear water inlet, and therefore relative countercurrent flow of clear water and waste water in the shell is achieved, and heat exchange efficiency is improved.
Furthermore, one end of the U-shaped water chamber at the two ends of the shell is vertically arranged, and the other end of the U-shaped water chamber is horizontally arranged; the connecting pipes at the two ends of the shell are horizontally arranged at one end close to the vertical water chamber and vertically arranged at one end close to the horizontal water chamber, so that the heat exchanger is compact in overall structure and saves occupied space.
Further, U type hydroecium with between the casing and the reducing hydroecium with be flange joint between the casing, easy to assemble and dismantlement, U type hydroecium and reducing hydroecium are international general pipe fitting simultaneously, and the part commonality is strong, convenient purchase, simple structure, and the preparation is easy.
Furthermore, a baffle group arranged in the same direction as the shell is arranged in the shell and supports the heat exchange tube bundle, the baffle group comprises a disc baffle plate, a circular baffle plate and a pull rod, the disc baffle plate and the circular baffle plate are concentric, and the pull rod is connected with the disc baffle plate and the circular baffle plate and is parallel to the shell; the disc baffle plate and the annular baffle plate are perpendicular to the shell, so that the flow direction of low-temperature clean water in the shell is changed, the flow speed is increased, sufficient heat exchange is carried out, and the heat exchange efficiency is improved.
Furthermore, the pull rod sleeve is provided with a fixed-moment pipe, the disc baffle plate and the circular baffle plate are arranged at intervals through the fixed-moment pipe, and through the structural design of the disc-circular baffle plate, compared with the traditional bow shape, the flow resistance is smaller, and the condition that the pressure loss of a water path is overlarge due to the multi-flow design is avoided.
Furthermore, the tube plate is provided with a plurality of heat exchange tube holes which are arranged in concentric circles, the circle center of each heat exchange tube hole forms a heat exchange tube distribution circle, and the heat exchange tube distribution circle and the disc baffle plate/the circular baffle plate are concentric, so that incomplete round holes generated when the baffle plate is cut can be effectively reduced, and the heat exchange tube is prevented from being damaged by the cut corners. The cloth pipe is more compact, saves space and can reduce the overall dimension.
Furthermore, the heat exchanger further comprises a supporting device, the supporting device comprises a supporting plate and a channel steel chassis, the supporting plate is used for supporting the supporting plate of the shell and the channel steel chassis is arranged at the bottom of the shell, the supporting plate is provided with a through hole used for penetrating through the shell and used for supporting the shell, and meanwhile, the shell is conveniently positioned when the heat exchanger is manufactured.
Furthermore, reinforcing ribs are arranged at the connecting positions of the supporting plates and the chassis to enhance the connecting strength.
Furthermore, the heat exchange tube bundle, the tube plate, the U-shaped water chamber, the reducing water chamber and the shell are all made of stainless steel materials, and the heat exchange tube bundle, the tube plate, the U-shaped water chamber, the reducing water chamber and the shell are corrosion-resistant, easy to clean and not easy to block.
Has the advantages that: compared with the prior art, the utility model is different in that, the utility model provides a pure countercurrent flow water-water heat exchanger for waste water heat recovery, including the casing, be equipped with the heat exchange tube bank in the casing, the casing both ends are equipped with the tube sheet of fixed tube bank, the tube bank passes through baffle group support in the casing, communicate through U type hydroecium between the adjacent casing, carry out the mixed recirculation of sewage, the casing both ends communicate reducing hydroecium, form waste water inlet and waste water outlet, correspondingly, the casing is equipped with clear water export and clear water entry, waste water in the tube bank and clear water outside the tube bank pass through the countercurrent flow of multitubular pass, can carry out abundant heat transfer, have improved its heat exchange efficiency greatly; the multiple shells are connected in a matching manner in the horizontal and vertical directions through the U-shaped water chambers, so that the flow is increased, the structure is more compact, and the occupied space is reduced; the shell pass and the tube pass are designed in a multi-flow mode, the length of a single flow can be determined according to the field space, the flow structures are the same, the multi-flow mode is combined with similar modules, and the assembly is convenient.
Drawings
Fig. 1 is a front view of the pure countercurrent water-water heat exchanger for waste water heat energy recovery of the present invention.
Fig. 2 is a left side view of the pure countercurrent water-water heat exchanger for waste water heat energy recovery of the present invention.
Fig. 3 is a right side view of the pure countercurrent water-water heat exchanger for waste water heat energy recovery of the present invention.
Fig. 4 is a front view of a middle baffle group according to the present invention.
Fig. 5 is a left side view of the disk baffle of fig. 4.
FIG. 6 is a left side view of the annular baffle of FIG. 4.
Fig. 7 is a front view of the supporting device of the present invention.
Fig. 8 is a left side view of the middle supporting device of the present invention.
Fig. 9 is a right side view of the middle tube plate of the present invention.
The device comprises a shell, 11 clear water inlets, 12 clear water outlets, 2 tube plates, 21 heat exchange tube holes, 22 heat exchange tube distribution tube circles, 3-U-shaped water chambers, 4-reducing water chambers, 41-waste water inlets, 42-waste water outlets, 5-connecting tubes, 6-baffle groups, 61-disc baffles, 62-circular baffles, 63-pull rods, 7-supporting devices, 71-supporting plates, 711-through holes, 72-chassis and 73-reinforcing ribs.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Referring to fig. 1 to 3, the utility model provides a pure countercurrent water-water heat exchanger for recovering heat energy of waste water, which is provided with a communicating pipeline, the communicating pipeline comprises six mutually communicated shells 1, a heat exchange tube bundle is arranged in the shell 1, tube plates 2 for fixing the tube bundle are arranged at two ends of the shell 1, and five U-shaped water chambers 3 are also included, the U-shaped water chambers 3 are communicated between the heat exchange tube bundles in the two adjacent shells 1, the waste water is mixed in the U-shaped water chambers 3, and the waste water is redistributed and enters the heat exchange tube bundle in the next shell 1 through the tube plates 2, so that the heat exchange effect difference of the tube bundles at different positions is prevented, the heat exchange is not uniform, and the temperature difference is formed;
the communicating pipeline is provided with a head end opening and a tail end opening, the head end opening and the tail end opening are both communicated with a reducing water chamber 4, the reducing water chamber 4 is communicated with the heat exchange tube bundle to form a waste water inlet 41 and a waste water outlet 42, high-temperature waste water flows in from the waste water inlet 41, flows into the U-shaped water chamber 3 through the heat exchange tube bundle, flows into the heat exchange tube bundle in the next shell 1 after being mixed, enters the U-shaped water chamber 3 again for mixing, then flows into the heat exchange tube bundle in the third shell 1, and so on until the flow of the heat exchange tube bundles in the six shells is completely finished, and the waste water flows out from the waste water outlet 42;
two ends of the shell 1 are respectively provided with an opening near the tube plate 2, the openings are communicated between the shell 1 and the heat exchange tube bundle, the openings between two adjacent shells 1 are communicated through a connecting tube 5, wherein the opening near the waste water inlet 41 is a clear water outlet 12, the opening near the waste water outlet 42 is a clear water inlet 11, low-temperature clear water flows into the space between the shell 1 and the tube bundle through the clear water inlet 11 near the waste water outlet 42, flows inside the shell 1, enters the next shell 1 from the connecting tube 5 through the opening at the right end of the shell, flows through the other shell 1 again, enters the third shell 1 from the connecting tube 5 through the opening at the left end of the shell, and so on, after flowing through six flows, the clear water flows out from the clear water outlet 12 at the waste water inlet 41, so that the relative countercurrent flow of the clear water and the waste water in the shell 1 is realized, and the temperature of the low-temperature clean water at the clear water outlet 12 is as, the heat energy is recovered to the maximum extent. In addition, the structure of each section of flow is the same, the difficulty of design and manufacture is not increased, and the universality of parts is improved. The heat exchanger is designed by considering the field space and the thermodynamic calculation result, and the length and the number of the flow of one section of flow can be determined, so that the configuration is very flexible, and the heat exchange effect is not influenced.
Preferably, the number of the shell 1 is not limited, and 3, 4, 5, 6, 7 or 8U-shaped water chambers can be set according to actual needs, the U-shaped water chamber 3 at the left end of the shell 1 is vertically arranged, and the U-shaped water chamber 3 at the right end of the shell 1 is horizontally arranged; the connecting pipe 5 at the left end of the shell 1 is horizontally arranged, and the connecting pipe 5 at the right end is vertically arranged, so that the heat exchanger is compact in overall structure, and occupied space is saved.
Preferably, U type hydroecium 3 with between the casing 1 and reducing hydroecium 4 with be flange joint between the casing 1, easy to assemble and dismantle, U type hydroecium 3 and reducing hydroecium 4 are international general pipe fitting simultaneously, and the part commonality is strong, makes things convenient for the purchase, simple structure, and the preparation is easy.
As a preferred embodiment of the present invention, referring to fig. 1 and fig. 4 to fig. 6, a baffle group 6 is disposed in the casing 1 and is arranged in the same direction as the casing 1, and supports the heat exchange tube bundle, the baffle group 6 includes a disc baffle 61, a ring baffle 62 and a pull rod 63, the disc baffle 61 and the ring baffle 62 are concentric, wherein the pull rod 63 connects the disc baffle 61 and the ring baffle 62 and is parallel to the casing 1; the disc baffle plate 61 and the circular baffle plate 62 are both perpendicular to the shell 1 so as to change the flow direction of low-temperature clean water in the shell 1, increase the flow velocity, perform sufficient heat exchange and improve the heat exchange efficiency, and the number of the disc baffle plate 61 and the circular baffle plate 62 can be properly increased or reduced according to the length of the shell.
Preferably, the pull rod 63 is sleeved with a fixed-moment pipe, the disc baffle plate 61 and the circular baffle plate 62 are arranged at intervals through the fixed-moment pipe, and through the structural design of the disc-circular baffle plate, compared with the traditional bow shape, the flow resistance is smaller, and the condition that the pressure loss of a waterway is too large due to the multi-flow design is avoided.
As a preferred embodiment of the present invention, referring to fig. 9, the tube plate 2 is provided with a plurality of heat exchange tube holes 21 arranged in concentric circles, the center of the heat exchange tube hole 21 forms a heat exchange tube distribution circle 22, and the heat exchange tube distribution circle 22 is concentric with the disc baffle plate 61 and the ring baffle plate 62, so that an incomplete round hole is generated when the baffle plate is cut, and the heat exchange tube is prevented from being damaged by the corner cut. The cloth pipe is more compact, saves space and can reduce the overall dimension.
As a preferred embodiment of the present invention, referring to fig. 7 and 8, the present invention further comprises a supporting device 7, wherein the supporting device 7 comprises supporting plates 71 at two ends and a channel steel chassis 72 at the bottom, the supporting plate 71 is provided with a through hole 711 for passing through the casing to support the casing 1, and meanwhile, the casing 1 can be conveniently assembled and positioned when the heat exchanger is manufactured, and if the casing 1 is longer, the number of the supporting plates 71 can be properly increased.
Preferably, a reinforcing rib 73 is arranged at the joint of the supporting plate 71 and the bottom plate 72 to enhance the connecting strength.
Preferably, heat exchange tube bundle, tube sheet 2, U type hydroecium 3, reducing hydroecium 4 and casing 1 are stainless steel, and corrosion-resistant, and easy to clean is difficult for blockking up.
The above embodiments are merely preferred embodiments of the present disclosure, which are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present disclosure, should be included in the scope of the present disclosure.
Claims (9)
1. A pure countercurrent water-water heat exchanger for recovering waste water heat energy is provided with a communicating pipeline, wherein the communicating pipeline comprises a plurality of shells which are communicated with each other, heat exchange tube bundles are arranged in the shells, and tube plates for fixing the tube bundles are arranged at two ends of each shell;
the communicating pipeline is provided with a head end opening and a tail end opening, the head end opening and the tail end opening are both communicated with a reducing water chamber, and the reducing water chamber is communicated with the heat exchange tube bundle to form a wastewater inlet and a wastewater outlet;
the two ends of the shell are close to the tube plates and are respectively provided with an opening, the openings are communicated between the shell and the heat exchange tube bundles, the openings between the two adjacent shells are communicated through a connecting pipe, wherein the opening close to the waste water inlet is a clean water outlet, and the opening close to the waste water outlet is a clean water inlet.
2. The pure counterflow water-to-water heat exchanger for wastewater thermal energy recovery of claim 1, wherein:
one end of the U-shaped water chamber at the two ends of the shell is vertically arranged, and the other end of the U-shaped water chamber is horizontally arranged; the connecting pipes at the two ends of the shell are horizontally arranged at one end close to the vertical water chamber and vertically arranged at one end close to the horizontal water chamber.
3. The pure counterflow water-to-water heat exchanger for wastewater thermal energy recovery of claim 1, wherein:
and the U-shaped water chamber and the shell as well as the reducing water chamber and the shell are in flange connection.
4. The pure counterflow water-to-water heat exchanger for wastewater thermal energy recovery of claim 1, wherein:
the shell is internally provided with a baffle group which is arranged in the same direction as the shell, the baffle group comprises a disc baffle plate, a circular baffle plate and a pull rod, the disc baffle plate and the circular baffle plate are concentric, and the pull rod is connected with the disc baffle plate and the circular baffle plate and is parallel to the shell; the disc baffle plate and the circular ring baffle plate are both vertical to the shell.
5. The pure counterflow water-to-water heat exchanger for wastewater thermal energy recovery of claim 4, wherein:
the pull rod sleeve is provided with a moment fixing pipe, and the disc baffle plate and the circular ring baffle plate are arranged at intervals through the moment fixing pipe.
6. The pure counterflow water-to-water heat exchanger for wastewater thermal energy recovery of claim 4, wherein:
the tube plate is provided with a plurality of heat exchange tube holes which are arranged in concentric circles, the circle center of each heat exchange tube hole forms a heat exchange tube distribution circle, and the heat exchange tube distribution circle is concentric with the disc baffle plate/the circular baffle plate.
7. The pure counterflow water-to-water heat exchanger for wastewater thermal energy recovery of claim 1, wherein:
the supporting device comprises supporting plates at two ends and a channel steel chassis at the bottom, and the supporting plates are provided with through holes used for penetrating through the shell.
8. The pure counterflow water-to-water heat exchanger for wastewater thermal energy recovery of claim 7, wherein:
and reinforcing ribs are arranged at the joints of the supporting plates and the chassis.
9. The pure counterflow water-to-water heat exchanger for wastewater thermal energy recovery of claim 1, wherein:
the heat exchange tube bundle, the tube plate, the U-shaped water chamber, the reducing water chamber and the shell are all made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921489391.2U CN210833192U (en) | 2019-09-09 | 2019-09-09 | Pure countercurrent water-water heat exchanger for waste water heat energy recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921489391.2U CN210833192U (en) | 2019-09-09 | 2019-09-09 | Pure countercurrent water-water heat exchanger for waste water heat energy recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210833192U true CN210833192U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921489391.2U Active CN210833192U (en) | 2019-09-09 | 2019-09-09 | Pure countercurrent water-water heat exchanger for waste water heat energy recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210833192U (en) |
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2019
- 2019-09-09 CN CN201921489391.2U patent/CN210833192U/en active Active
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