CN214666195U - Low-flow-velocity enhanced heat exchange and online cleaning device - Google Patents
Low-flow-velocity enhanced heat exchange and online cleaning device Download PDFInfo
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- CN214666195U CN214666195U CN202120497762.2U CN202120497762U CN214666195U CN 214666195 U CN214666195 U CN 214666195U CN 202120497762 U CN202120497762 U CN 202120497762U CN 214666195 U CN214666195 U CN 214666195U
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- cleaning device
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Abstract
The utility model relates to a tubular heat exchanger heat transfer washs the field, specifically is a low velocity of flow reinforces heat transfer and online cleaning device, including fixing the support at the heat exchanger inner wall, there is the spill cavity above the support, the bottom surface of the spill cavity is equipped with a plurality of support legs, the spill cavity bottom is equipped with the through-hole, run through "T" shape pivot in the through-hole, the diameter main aspects of pivot is greater than the diameter of spill cavity bottom through-hole, and the main aspects of pivot are located the spill cavity; the rotating shaft extending out of the concave cavity is connected with a spiral tie, and at least one end of each of two ends of the spiral tie is provided with a propeller blade. The utility model discloses a also can easily start in low velocity of flow medium, compare in not adding propeller blade when, required starting velocity of flow reduces more than 30%, can also improve heat exchange efficiency.
Description
Technical Field
The utility model relates to a tubular heat exchanger heat transfer washs the field, concretely relates to heat transfer and online cleaning device are reinforceed to low velocity of flow.
Background
At present, a heat exchange tube of a tubular heat exchanger is usually matched with a spiral band device to realize automatic descaling, the spiral band device has the effects of online cleaning, heat transfer enhancement and the like, and the cleaning technology of the tubular heat exchanger has unique advantages and is widely used in the anti-scaling and energy-saving technology of the tubular heat exchanger. The spiral band device mainly comprises a spiral band, a bracket, a rotating shaft, a connecting ring and a gasket. The device utilizes the flow of cooling water to drive the spiral band to automatically rotate in the heat exchange tube, the running spiral band changes the running state of water in the tube, the turbulent flow area is enlarged, the laminar flow boundary layer and the transition layer are reduced or eliminated, so that the scale is not easy to stay in the tube wall and completely flows out of the heat exchange tube, and the scale is automatically cleaned in the running of the unit.
In the prior art, the spiral band has the problems of difficult starting and incapability of rotating in a medium with low flow rate due to various reasons, and is not beneficial to subsequent online cleaning and enhanced heat transfer.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heat transfer and online belt cleaning device are reinforceed to the low velocity of flow to solve the problem that the spiral tie starts the difficulty in the lower medium of velocity of flow.
In order to solve the technical problem, the utility model discloses a heat transfer and online cleaning device technical means are reinforceed to the low velocity of flow as follows: the heat exchanger comprises a support fixed on the inner wall of a heat exchanger, wherein a concave cavity is arranged above the support, a plurality of support legs are arranged on the bottom surface of the concave cavity, a through hole is formed in the bottom of the concave cavity, a T-shaped rotating shaft penetrates through the through hole, the diameter of the rotating shaft is larger than that of the through hole in the bottom of the concave cavity, and the large end of the rotating shaft is positioned in the concave cavity; the rotating shaft extending out of the concave cavity is connected with a spiral tie, and at least one end of the two ends of the spiral tie is provided with a propeller blade.
The low-flow-rate heat exchange enhancement and online cleaning device adopting the technical scheme has the following technical advantages: the utility model adopts the mode of increasing the auxiliary rotation of the propeller blades, and the auxiliary rotation of the propeller blades around the spiral band makes the spiral band start more easily in the low-flow medium and can start easily in the low-flow medium, and compared with the mode without the propeller blades, the required starting flow speed is reduced by more than 30%; the utility model discloses a spiral link can be placed by whole root, also can the multistage be placed, and every section adds the screw effect can be better.
As a preferred scheme, the support cover is provided with an internal thread, an external thread is arranged outside the cavity of the support, and a rubber ring is further arranged in the screwing direction of the threads of the support and the support cover; the internal thread on the support cover and the external thread on the support are convenient for mounting and dismounting the support and the support cover, the arranged rubber can play a role in sealing, the support and the support cover can be protected, and the support cover has a certain adjusting range.
As a preferred scheme, a bearing gasket, a ceramic bearing and a connecting ring are further arranged between the rotating shaft and the bottom of the concave cavity, a bracket cover matched with the bracket is arranged above the concave cavity, and annular grooves for mounting the ceramic bearing are arranged on the bearing gasket and the connecting ring; the ceramic bearing is convenient to fix, and the coaxiality of the bearing gasket, the ceramic bearing and the connecting ring is better.
As a preferred scheme, after the bracket cover is arranged on the bracket, the freedom degrees of the rotating shaft, the bearing gasket, the ceramic bearing and the connecting ring in the axial direction of the rotating shaft can be limited; when the rotating shaft is fixed, the ceramic bearing can be attached to the bearing gasket and the connecting ring to reduce friction between the rotating shaft and the support.
As a preferred scheme, at least one end of the two ends of the spiral tie is provided with a rotating shaft connecting piece, the rotating shaft connecting piece is used for connecting and fixing the rotating shaft and the spiral tie, and the spiral paddle is arranged on the rotating shaft connecting piece; a multipoint fixing mode is adopted between the rotating shaft connecting piece and the spiral band; the propeller blades are installed on the rotating shaft connecting piece, then the rotating shaft connecting piece is installed, the installation is more convenient, the multi-point fixation between the rotating shaft connecting piece and the spiral band is more firm, and the rotation cannot occur.
Preferably, at least one end of each of the two ends of the spiral tie is provided with an extension part, and at least one part of the extension part of each of the two ends is fixed with a propeller blade; the propeller blades are fixed on the extension parts of the spiral bands, so that rotating shaft connectors can be reduced, and materials can be reduced.
Preferably, a flat shaft part is arranged at one end of the rotating shaft, which extends out of the concave cavity, and a plurality of through holes are formed in the flat shaft part; and the rotating shaft connecting piece is provided with a plurality of through holes corresponding to the flat shaft parts.
As a preferred scheme, a groove is formed in one end, extending out of the concave cavity, of the rotating shaft, and a plurality of through holes penetrating through the groove are formed in two ends of the groove; and the rotating shaft connecting piece is provided with a through hole corresponding to the flat shaft part.
Preferably, the propeller blade has at least two blades, and the inclination angle of the propeller blade is larger than the lead angle of the spiral tie and the directions of the propeller blades are consistent. The proper blade number can obviously increase the rotating speed of the spiral band under the pushing of the flowing medium. The inclination angle of the propeller blade is larger than the lead angle of the spiral link belt, and the directions of the propeller blades are consistent; the medium flowing through the propeller blades and the spiral bands can flow more smoothly, and the resistance generated when the medium flows is reduced.
Preferably, the spiral bands are composed of at least two sections, and at least one propeller blade is arranged between two adjacent sections of spiral bands.
Drawings
Fig. 1 is a schematic overall appearance diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic external view of a spiral ligament portion in example 1;
FIG. 3 is a schematic view of the embodiment 1 installed in a heat exchange tube;
FIG. 4 is a schematic external view of a spiral ligament portion in example 2;
FIG. 5 is a schematic view of the overall configuration in example 3.
The main part symbols in the figures are explained as follows:
1. a support; 2. a rotating shaft; 3. a bracket cover; 4. a helical ligament; 5. a rotating shaft connecting piece; 6. a propeller blade; 7. a heat exchange tube.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, the low-flow-rate heat exchange enhancement and on-line cleaning device comprises a support 1 fixed on the inner wall of a heat exchanger 7, a concave cavity is arranged above the support 1, the bottom surface of the concave cavity is preferably provided with three support legs which are outwards opened in the radial direction, the support legs are also provided with limiting parts used for being clamped on the outer side of the inner wall of the heat exchange tube, the bottom of the concave cavity is provided with a through hole, a T-shaped rotating shaft 2 penetrates through the through hole, the diameter big end of the rotating shaft 2 is larger than that of the through hole at the bottom of the concave cavity, and the big end of the rotating shaft 2 is positioned in the concave cavity; a bearing gasket, a ceramic bearing and a connecting ring are further arranged between the rotating shaft 2 and the bottom of the concave cavity, annular grooves for mounting the ceramic bearing are formed in the bearing gasket and the connecting ring, and the ceramic bearing is preferably a fully-sealed underwater miniature ceramic bearing; a support cover 3 matched with the support 1 is arranged above the concave cavity, internal threads are arranged on the support cover 3, external threads are arranged outside the cavity of the support 1, and a rubber ring is further arranged in the screwing direction of the threads of the support 1 and the support cover 3; the rotating shaft 2 extending out of the concave cavity is connected with a spiral link 4, at least one end of each of two ends of the spiral link 4 is provided with a propeller blade 6, the propeller blades 6 are provided with four blades, preferably, the inclination angle of the propeller blade 6 is larger than the lift angle of the spiral link, and the directions of the propeller blades are consistent.
In embodiment 3, as shown in fig. 5, a propeller blade 6 is arranged at one end of the spiral tie 4 far away from the rotating shaft 2, and the propeller blade 6 is arranged on the rotating shaft connector 5 or the extension part of the spiral tie 5; one end of the spiral band 5 close to the rotating shaft 2 is directly connected with the rotating shaft 2 through an extending part or is connected with the rotating shaft 2 through a rotating shaft connecting piece 5.
The spindle connection 5 is preferably a stainless steel connection, in the shape of a triangle.
Principle of example 1 and example 3: when a medium flows, the propeller blades are driven to rotate firstly, the propeller blades drive the spiral bands to rotate through the rotating shaft, when the medium does not flow to the spiral bands, no medium flows through the spiral bands and the heat exchange tube, the force acting on the rotating shaft is small, the frictional resistance overcome when the rotating shaft rotates is small, the spiral bands are driven to rotate through the propeller blades, the spiral bands are enabled to be started more easily, and after the medium enters the space between the spiral bands and the heat exchange tube, the propeller blades and the spiral bands are directly driven to rotate when the medium flows; the spiral band can obtain enough high rotating speed in the same flow velocity medium, and the heat exchange efficiency is improved.
The spiral ties in embodiments 1, 2, and 3 may also be composed of at least two sections, and at least one propeller blade is disposed between two adjacent sections of spiral ties, so that the effect of the spiral ties is better.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a heat transfer and online belt cleaning device are reinforceed to low velocity of flow which characterized in that: the heat exchanger comprises a support fixed on the inner wall of a heat exchanger, wherein a concave cavity is arranged above the support, a plurality of support legs are arranged on the bottom surface of the concave cavity, a through hole is formed in the bottom of the concave cavity, a T-shaped rotating shaft penetrates through the through hole, the diameter of the rotating shaft is larger than that of the through hole in the bottom of the concave cavity, and the large end of the rotating shaft is positioned in the concave cavity; the rotating shaft extending out of the concave cavity is connected with a spiral tie, and at least one end of the two ends of the spiral tie is provided with a propeller blade.
2. The low-flow-rate enhanced heat exchange and on-line cleaning device as claimed in claim 1, wherein: a bearing gasket, a ceramic bearing and a connecting ring are further arranged between the rotating shaft and the bottom of the concave cavity, a bracket cover matched with the bracket is arranged above the concave cavity, and annular grooves for mounting the ceramic bearing are formed in the bearing gasket and the connecting ring.
3. The low-flow-rate enhanced heat exchange and on-line cleaning device as claimed in claim 2, wherein: the support is characterized in that an internal thread is arranged on the support cover, an external thread is arranged outside a cavity of the support, and a rubber ring is further arranged in the screwing direction of the support and the support cover.
4. The low-flow-rate enhanced heat exchange and on-line cleaning device as claimed in claim 2, wherein: after the support cover is arranged on the support, the freedom degree of the rotating shaft, the bearing gasket, the ceramic bearing and the connecting ring in the axial direction of the rotating shaft can be limited.
5. The low-flow-rate enhanced heat exchange and on-line cleaning device as claimed in claim 2, wherein: at least one end of the two ends of the spiral link is provided with a rotating shaft connecting piece, the rotating shaft connecting piece is used for connecting and fixing the rotating shaft and the spiral link, and the spiral blade is arranged on the rotating shaft connecting piece; and a multipoint fixing mode is adopted between the rotating shaft connecting piece and the spiral band.
6. The low-flow-rate enhanced heat exchange and on-line cleaning device as claimed in claim 2, wherein: at least one end of each of the two ends of the spiral tie is provided with an extension part, and at least one part of the extension part of each of the two ends is fixed with a propeller blade.
7. The low-flow-rate enhanced heat exchange and on-line cleaning device as claimed in claim 5, wherein: one end of the rotating shaft, which extends out of the concave cavity, is provided with a flat shaft part, and a plurality of through holes are formed in the flat shaft part; and the rotating shaft connecting piece is provided with a plurality of through holes corresponding to the flat shaft parts.
8. The low-flow-rate enhanced heat exchange and on-line cleaning device as claimed in claim 5, wherein: a groove is formed in one end, extending out of the concave cavity, of the rotating shaft, and a plurality of through holes penetrating through the groove are formed in the two ends of the groove; and the rotating shaft connecting piece is provided with a through hole corresponding to the flat shaft part.
9. The low-flow-rate enhanced heat exchange and on-line cleaning device as claimed in claim 1, wherein: the propeller blade is provided with at least two blades, the inclination angle of the propeller blade is larger than the lead angle of the spiral link, and the directions of the propeller blades are consistent.
10. The low-flow-rate enhanced heat exchange and on-line cleaning device as claimed in claim 1, wherein: the spiral link is composed of at least two sections, and at least one propeller blade is arranged between two adjacent sections of spiral links.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120497762.2U CN214666195U (en) | 2021-03-09 | 2021-03-09 | Low-flow-velocity enhanced heat exchange and online cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120497762.2U CN214666195U (en) | 2021-03-09 | 2021-03-09 | Low-flow-velocity enhanced heat exchange and online cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214666195U true CN214666195U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120497762.2U Active CN214666195U (en) | 2021-03-09 | 2021-03-09 | Low-flow-velocity enhanced heat exchange and online cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214666195U (en) |
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2021
- 2021-03-09 CN CN202120497762.2U patent/CN214666195U/en active Active
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