CN212645481U - Double-tube-plate heat exchanger convenient for detecting leakage point of welded tube plate - Google Patents
Double-tube-plate heat exchanger convenient for detecting leakage point of welded tube plate Download PDFInfo
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- CN212645481U CN212645481U CN202021134292.5U CN202021134292U CN212645481U CN 212645481 U CN212645481 U CN 212645481U CN 202021134292 U CN202021134292 U CN 202021134292U CN 212645481 U CN212645481 U CN 212645481U
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Abstract
The utility model belongs to the technical field of sanitary-grade heat exchanger, concretely relates to double-tube-plate heat exchanger convenient to detect welding tube sheet leak source, including the casing, be equipped with hot medium import and comdenstion water export on the casing, the casing both ends are equipped with the expanded joint tube sheet, and in the casing, fixed mounting has a plurality of tubulations between the expanded joint tube sheet at both ends, and the port at tubulation both ends is connected the welding tube sheet, and upper cover and low head, its characterized in that are connected respectively to the welding tube sheet at both ends: and a pressurizing sealing cavity is arranged between the welding tube plate and the expansion tube plate, and a pressurizing inner wire connector is arranged in the pressurizing sealing cavity. The double-tube plate heat exchanger convenient for detecting the leakage point of the welded tube plate has the advantages that the expansion connection and the simultaneous pressing of the welded double-tube plate are convenient and quick during pressing, and the pressing time is greatly prolonged; welding shortages can be quickly and accurately found and processed during pressing, and the working efficiency is improved.
Description
Technical Field
The utility model relates to a double-tube-plate heat exchanger convenient to detect welding tube sheet leak source belongs to sanitary-grade heat exchanger technical field.
Background
The double-tube-plate heat exchanger is mainly applied to the working condition with higher requirement on the sanitation level, the tail end of the heat exchange tube bundle is fastened by adopting the double tube plates, and the risk that the conventional heat exchanger is easy to generate cross contamination is avoided by adopting the double-tube-plate structure.
When double-tube-plate heat exchanger equipment seen in the current market is manufactured, two tube plates are respectively formed at two ends, namely an expansion tube plate and a welding tube plate, and if steam leaks from the expansion tube plate or cold medium (pure water or liquid medicine) leaks from the welding tube plate, the steam or the cold medium is exposed out of a gap (about 10mm) between the expansion tube plate and the welding tube plate, so that the steam and the cold medium are not mixed. Cross contamination between the cooling medium and the steam is avoided, which is a main characteristic of the double tube plate heat exchanger. After the shell pass part is processed and manufactured, the expansion joint pipe plate 7 is pressurized through a pressurizing experiment through the heat medium inlet 8 or the condensed water outlet 12 to find out a leakage point, and then the leakage point is repaired. After the end sockets at two ends are installed, the welding pipe plate 5 is pressed, a pressing test is carried out on the cold medium water inlet 1 or the cold medium water outlet 2 to find out a leakage point, and then the leakage point is repaired. However, when the welded tube plate 5 is pressed, the observation surface of the leak point is positioned between the welded tube plate 5 and the expansion tube plate 7, so that the observation is not easy, and the leak point is difficult to find due to the large number of tubes.
SUMMERY OF THE UTILITY MODEL
According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: the defects of the prior art are overcome, and the double-tube-plate heat exchanger convenient for detecting leakage points of the welded tube plates is provided to solve the problems.
Double-tube-sheet heat exchanger convenient to detect welding tube sheet leak source, including the casing, be equipped with hot medium import and comdenstion water export on the casing, the casing both ends are equipped with the expanded joint tube sheet, in the casing, fixed mounting has a plurality of tubulations between the expanded joint tube sheet at both ends, the port at tubulation both ends is connected the welding tube sheet, the welding tube sheet at both ends is connected upper cover and low head respectively, its characterized in that: and a pressurizing sealing cavity is arranged between the welding tube plate and the expansion tube plate, and a pressurizing inner wire connector is arranged in the pressurizing sealing cavity.
The welding tube plate is connected with the upper end enclosure and the lower end enclosure through flanges, so that the welding tube plate is convenient to mount and dismount.
The upper end enclosure is provided with a cold medium water inlet and a cold medium water outlet, and a partition plate is arranged between the cold medium water inlet and the cold medium water outlet.
Preferably, the shell is externally provided with a heat insulation layer to prevent excessive heat dissipation.
Preferably, the bottom of the lower end socket is provided with a water outlet which can exhaust media in the pipe pass.
The working process is as follows: the cold medium enters the heat exchanger from the cold medium water inlet, enters the tubes through the upper end enclosure, the welding tube plate and the expansion tube plate, reversely enters the other group of tubes through the lower end enclosure after heat exchange, returns to the upper end enclosure, and is discharged through the cold medium water outlet, so that the purpose of temperature rise is achieved. Meanwhile, steam enters the shell side of the heat exchanger through a hot medium inlet and exchanges heat with cold media in the tubes, and the cold media are discharged out of the heat exchanger through a condensed water outlet after being cooled.
The utility model discloses after the installation of expansion joint tube sheet and welding tube sheet, along the expansion joint tube sheet periphery, will expand joint tube sheet and weld the tube sheet and weld an organic whole, form and suppress sealed chamber. The operation process of the equipment is the same as that of the prior equipment, when the equipment is pressurized, the inner thread interface is connected with the gas circuit connector to pressurize the expansion pipe plate and the welding pipe plate, and the upper seal head and the lower seal head are opened to clearly distinguish the weld opening with a leakage point.
Compared with the prior art, the utility model beneficial effect who has is:
the double-tube plate heat exchanger convenient for detecting the leakage point of the welded tube plate has the advantages that the expansion connection and the simultaneous pressing of the welded double-tube plate are convenient and quick during pressing, and the pressing time is greatly prolonged; welding shortages can be quickly and accurately found and processed during pressing, and the working efficiency is improved.
Drawings
Fig. 1 is a schematic view of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure: 1. a cold medium inlet; 2. a cold medium outlet; 3. an upper end enclosure; 4. a partition plate; 5. welding a tube plate; 6. pressurizing the sealing cavity; 7. expanding and connecting the tube plate; 8. a thermal medium inlet; 9. a housing; 10. arranging pipes; 11. a heat-insulating layer; 12. a condensed water outlet; 13. a lower end enclosure; 14. a water outlet; 15. and pressing the internal thread interface.
Detailed Description
The invention will be further described with reference to the following examples:
as shown in fig. 1-2, double tube sheet heat exchanger convenient to detect welding tube sheet leak source, including casing 9, be equipped with hot medium import 8 and comdenstion water export 12 on the casing 9, the casing 9 both ends are equipped with expanded joint tube sheet 7, in the casing 9, fixed mounting has a plurality of tubulations 10 between the expanded joint tube sheet 7 at both ends, welding tube sheet 5 is connected to the port at tubulation 10 both ends, and the welding tube sheet 5 at both ends connects upper cover 3 and low head 13 respectively, its characterized in that: and a pressurizing sealing cavity 6 is arranged between the welding tube plate 5 and the expansion tube plate 7, and the pressurizing sealing cavity 6 is provided with a pressurizing internal thread connector 15.
After the expansion tube plate and the welding tube plate are installed, the expansion tube plate 7 and the welding tube plate are welded into a whole along the periphery of the expansion tube plate 7 to form a pressurizing sealing cavity 6.
The welding tube plate 5 of the embodiment is connected with the upper seal head 3 and the lower seal head 13 through flanges. The upper end enclosure 3 is provided with a cold medium water inlet 1 and a cold medium water outlet 2, and a partition plate 4 is arranged between the cold medium water inlet 1 and the cold medium water outlet 2.
In the embodiment, the shell 9 is externally provided with an insulating layer 11, and the bottom of the sealing head is provided with a water outlet 14.
The utility model discloses an equipment operation process is the same before, when suppressing, suppresses 15 connection gas circuit joints of internal thread interface, suppresses expand joint tube sheet 7, welding tube sheet 5, opens that weld joint of distinguishing that upper cover 3 and low head 13 can be very clear has the leakage point. The utility model can press the expansion joint and the welding double tube plate simultaneously conveniently and rapidly, thereby greatly improving the pressing time; welding shortages can be quickly and accurately found and processed during pressing, and the working efficiency is improved.
Claims (5)
1. The utility model provides a double tube sheet heat exchanger convenient to detect welding tube sheet leak source, including casing (9), be equipped with hot medium import (8) and comdenstion water export (12) on casing (9), casing (9) both ends are equipped with expanded joint tube sheet (7), in casing (9), fixed mounting has a plurality of tubulations (10) between expanded joint tube sheet (7) at both ends, welding tube sheet (5) are connected to the port at tubulation (10) both ends, upper cover (3) and low head (13) are connected respectively in welding tube sheet (5) at both ends, its characterized in that: a pressurizing sealing cavity (6) is arranged between the welding tube plate (5) and the expansion tube plate (7), and a pressurizing inner wire connector (15) is arranged in the pressurizing sealing cavity (6).
2. The double tube sheet heat exchanger facilitating detection of a weld tube sheet leak point of claim 1, wherein: the welding tube plate (5) is connected with the upper seal head (3) and the lower seal head (13) through flanges.
3. The double tube sheet heat exchanger facilitating detection of a weld tube sheet leak point of claim 1, wherein: the upper end enclosure (3) is provided with a cold medium water inlet (1) and a cold medium water outlet (2), and a partition plate (4) is arranged between the cold medium water inlet (1) and the cold medium water outlet (2).
4. The double tube sheet heat exchanger facilitating detection of a weld tube sheet leak point of claim 1, wherein: and a heat-insulating layer (11) is arranged outside the shell (9).
5. The double tube sheet heat exchanger facilitating detection of a weld tube sheet leak point of claim 1, wherein: and a water outlet (14) is formed at the bottom of the lower end enclosure (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021134292.5U CN212645481U (en) | 2020-06-17 | 2020-06-17 | Double-tube-plate heat exchanger convenient for detecting leakage point of welded tube plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021134292.5U CN212645481U (en) | 2020-06-17 | 2020-06-17 | Double-tube-plate heat exchanger convenient for detecting leakage point of welded tube plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212645481U true CN212645481U (en) | 2021-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021134292.5U Active CN212645481U (en) | 2020-06-17 | 2020-06-17 | Double-tube-plate heat exchanger convenient for detecting leakage point of welded tube plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212645481U (en) |
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2020
- 2020-06-17 CN CN202021134292.5U patent/CN212645481U/en active Active
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