CN202793102U - Double-tube and double-tube sheet heat exchanger - Google Patents
Double-tube and double-tube sheet heat exchanger Download PDFInfo
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- CN202793102U CN202793102U CN 201220423161 CN201220423161U CN202793102U CN 202793102 U CN202793102 U CN 202793102U CN 201220423161 CN201220423161 CN 201220423161 CN 201220423161 U CN201220423161 U CN 201220423161U CN 202793102 U CN202793102 U CN 202793102U
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Abstract
The utility model relates to an alarm-type double-tube and double-tube sheet heat exchanger, which comprises a heat exchange tube, an intermediate medium tube, a first front tube sheet, a second front tube sheet, a first rear tube sheet, a second rear tube sheet and a shell. A cavity is arranged between the first front tube sheet and the second front tube sheet; a cavity is arranged between the first rear tube sheet and the second rear tube sheet; the heat exchange tube is embedded in the intermediate medium tube; an intermediate medium cavity is formed between the outer tube wall of the heat exchange tube and the inner tube wall of the intermediate medium cavity; the intermediate medium cavity is respectively communicated with the cavity between the two front tube sheets and the cavity between the rear tube sheets along the intermediate medium tube; the wall of the cavity between the first rear tube sheet and the second rear tube sheet is provided with an expansion tank; and the wall of the cavity between the first front tube sheet and the second front tube sheet is provided with an alarm. According to the alarm-type double-tube and double-tube sheet heat exchanger, the joints of the heat exchange tube of the heat exchanger and the tube sheets can be prevented from leaking, and moreover, when the heat exchange tube bundle leaks, a tube-side medium and a shell-side medium of the heat exchanger are prevented from direct contact, and moreover, the alarm gives an alarm to prevent the accident from occurring.
Description
Technical field
The utility model relates to a kind of pipe heat exchanger, and pipe side medium directly contacts with the shell-side medium and reacts or two-tube double tube plate heat exchanger that medium pollutes mutually after relating in particular to a kind of heat exchanger tube that can prevent heat exchanger and leaking.
Background technology
Shell-and-tube heat exchanger is the common processing equipment of carrying out heat exchange operation, be widely used in the industrial departments such as chemical industry, oil, petrochemical industry, electric power, light industry, metallurgy, atomic energy, shipbuilding, aviation, heat supply, particularly in petroleum refining and chemical processing equipment, occupy extremely important status.But the reasons such as shell-and-tube heat exchanger is loaded unstable owing to long-time running, production and concentration of medium exceeds standard unavoidably can be leaked.Can cause the industry of the grave dangers such as blast and the industry occasion higher to environmental requirement at some to pipe side medium and the mixing of shell-side medium, for example, such as industries such as chemical industry, metallurgy, food, polysilicons, in case leak, will cause irremediable life and property loss.
Enterprise generally also all is the concentration from the control cooling medium, the Leakage probability that reinforcement repair and maintenance equal angles reduces heat exchanger aborning at present, basically puts prevention first with the planned of cycled recondition.The heat exchanger that prevents from specially restraining leakage is also seldom arranged at present on the market.
The utility model content
The purpose of this utility model provides a kind of safe two-tube pipe heat exchanger, can effectively avoid the heat exchanger tube of heat exchanger to leak after pipe side medium directly contact with the shell-side medium and produce the generation of the caused danger of chemical reaction or pollution.
The realization the technical solution of the utility model is: comprise heat exchanger tube, the first front tube sheet, the second front tube sheet, the first back tube sheet, the second back tube sheet and shell wall; Be provided with front pipe cavity between described the first front tube sheet and described the second front tube sheet, be provided with rear pipe cavity between described the first back tube sheet and described the second back tube sheet; It is characterized in that: described heat exchanger tube includes outer tube and inner tube; It is inner that described inner tube is nested in described outer tube; Consist of intermediate cavity between described inner tube and the described outer tube wall; Described intermediate cavity connects with front pipe cavity, rear pipe cavity respectively mutually along outer tube; The chamber wall of described rear pipe cavity is provided with expansion drum, and the chamber wall of described front pipe cavity is provided with alarm; Described front pipe cavity or after manage and be furnished with some fillers in the cavity.
Further, described inner tube and described outer coaxial tube.
Described inner tube be connected outer tube as a whole respectively with described the second front tube sheet be connected the first back tube sheet expanded joint and be connected.
The minimum dimension of described filler is greater than the size of intermediate cavity, and described filling can be selected the solid piece of polyurethane.
Described shell wall is provided with boss, and described shell wall bottom is provided with draining switch.
Use amount for the intermediate medium that reduces intermediate cavity saves production cost, can front pipe cavity or after manage filler be set in the cavity because filler occupies certain cavity volume, relatively just reduced the use amount of intermediate medium.
The two-tube double tube plate heat exchanger that the utility model provides, being nested in the intermediate cavity that forms between the dependence inner and outer pipes in the outer tube by the inner tube with heat exchanger tube separates pipe side medium and shell-side medium, behind the pipe side medium that can effectively prevent heat exchanger and the shell-side dielectric leakage because directly contacting chemical reaction and the pollution that produces, can cause the industry of the grave dangers such as blast and the industry occasion higher to environmental requirement at some to pipe side medium and the mixing of shell-side medium, have good application prospect.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and the below is according to specific embodiment and by reference to the accompanying drawings, and the present invention is further detailed explanation.
Fig. 1 is the main cutaway view of two-tube double tube plate heat exchanger.
Fig. 2 is the top view of two-tube double tube plate heat exchanger.
Fig. 3 is the enlarged drawing at I place in the main cutaway view of two-tube double tube plate heat exchanger.
Fig. 4 is the II place enlarged drawing in the top view of two-tube double tube plate heat exchanger.
Fig. 5 is the III place enlarged drawing of the top view of two-tube double tube plate heat exchanger.
Fig. 6 be heat exchanger tube and intermediate medium pipe as a whole with the expanded joint schematic diagram of the second front tube sheet.
Fig. 7 be heat exchanger tube and intermediate medium pipe as a whole with the expanded joint schematic diagram of the first back tube sheet.
Wherein, 1 pipe side-entrance, 2 first front tube sheets, 3 front pipe cavitys, 4 second front tube sheets, the outlet of 5 shell-sides, 6 shell walls, 7 heat exchanger tubes, the 7-1 inner tube, 7-2 outer tube, 7-3 intermediate cavity, 8 boss, 9 shell-side inlet, 10 fillers, 11 second back tube sheets, 12 rear pipe cavitys, 13 first back tube sheets, 14 draining switch, 15 bases, 16 pipe side outlets, 17 alarms, 18 expansion drums.
The specific embodiment
See Fig. 1, the utlity model has heat exchanger tube 7, the first front tube sheet 2, the second front tube sheet 4, the first back tube sheet 13, the second back tube sheet 11 and shell wall 6; Be provided with front pipe cavity 3 between described the first front tube sheet 2 and described the second front tube sheet 4, be provided with rear pipe cavity 12 between described the first back tube sheet 13 and described the second back tube sheet 11; Described heat exchanger tube 7 includes outer tube 7-2 and inner tube 7-1; It is inner that described inner tube 7-1 is nested in described outer tube 7-2; Consist of intermediate cavity 7-3 between described inner tube 7-1 and the described outer tube 7-2 tube wall; Described intermediate cavity 7-3 connects with front pipe cavity 3, rear pipe cavity 12 respectively mutually along outer tube 7-2; The chamber wall of described rear pipe cavity 12 is provided with expansion drum 18, and 18 li of expansion drums are equipped with a certain amount of intermediate medium, is used for managing backward cavity 12, intermediate cavity 7-3 and front pipe cavity 3 intermediate medium is provided, and the pipe side of heat exchanger is situated between like this
Matter is at inner tube 7-1 inner fluid, cut off by the intermediate medium in the intermediate cavity 7-3 between pipe side medium and the shell-side medium, avoided when inner tube 7-1 leak or outer tube 7-2 when leaking pipe side medium and shell-side medium directly contact the possible chemical reaction of rear generation.
In addition, in order to guarantee the heat transfer uniformity of the intermediate medium in the intermediate cavity 7-3, it is coaxial that inner tube 7-1 and outer tube 7-2 keep, and intermediate medium is evenly distributed in the intermediate cavity 7-3 like this, keeps the heat transfer balance.
In order to make heat exchanger staff after leakage can in time obtain relevant information, wall is provided with alarm 17 in the chamber of front pipe cavity 3, when the tube wall of inner tube 7-1 or outer tube 7-2 breaks, the medium of pipe side or the medium of shell-side can enter in the intermediate cavity 7-3 with breach, along with constantly overflowing into of the external medium of intermediate cavity 7-3, pressure in the intermediate cavity 7-3 can increase, when pressure is increased to the rated pressure of pre-set alarm 17, alarm 17 work give the alarm, and remind the attendant to hasten to process leakage accident.
Inner tube 7-1 be connected with outer tube 7-2 respectively with the second front tube sheet 4 be connected back tube sheet 13 expanded joints and be connected, guaranteed that the tube bank of heat exchanger is in the sealing at the second front tube sheet 4 and the first back tube sheet 13 places; Simultaneously in order to reduce the use amount of expansion drum 18 interior intermediate mediums, reduce production costs, front pipe cavity 3 or after manage be furnished with for example solid piece of polyurethane of some filler 10(in the cavity 12), because filler 10 has occupied the certain volume of cavity, so that the use amount of intermediate medium obviously reduces, flow in the intermediate cavity 7-3 for fear of filler 10 in addition and affect the heat exchange of inner tube 7-1 and shell-side medium, the minimum dimension of filler 10 should be greater than the size of intermediate cavity 7-3.
It is to allow manufacturer stick the Product labelling of our factory and the technical parameter of heat exchanger that shell wall 6 is provided with boss 8; Shell wall 6 bottoms are provided with draining switch 14 and are used for discharging liquid in the heat exchanger shell chamber.
In the use procedure, pipe side medium flows out from pipe side outlet 16 through heat exchange after pipe side-entrance 1 enters, and the shell-side medium enters through heat exchange from shell-side inlet 9 and flows out from shell-side outlet 5; Select a kind of being difficult for and pipe side medium and the aitiogenic intermediate medium of shell-side medium; intermediate medium is circulated in the whole intermediate cavity 7-3 by expansion drum 18; the like this protection of the interior middle dielectric layer of many intermediate cavity between the medium in the inner tube 7-1 and the medium heat exchanger shell chamber in; medium when having avoided leaking in the shell chamber contacts with the direct of medium in the inner tube 7-1, and pipe side medium and shell-side medium are realized the exchange of heat indirectly by the heat transmission of intermediate medium.In addition, expansion drum 18 is interior because there is in advance a certain amount of intermediate medium, when
Intermediate medium consumption in the intermediate cavity 7-3 can remedy when reducing at any time.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. a two-tube double tube plate heat exchanger comprises heat exchanger tube (7), the first front tube sheet (2), the second front tube sheet (4), the first back tube sheet (13), the second back tube sheet (11) and shell wall (6); Be provided with front pipe cavity (3) between described the first front tube sheet (2) and described the second front tube sheet (4), be provided with rear pipe cavity (12) between described the first back tube sheet (13) and described the second back tube sheet (11); It is characterized in that: described heat exchanger tube (7) includes outer tube (7-2) and inner tube (7-1); Described inner tube (7-1) is nested in described outer tube (7-2) inside; Consist of intermediate cavity (7-3) between described inner tube (7-1) and described outer tube (7-2) tube wall; Described intermediate cavity (7-3) connects with front pipe cavity (3), rear pipe cavity (12) respectively mutually along outer tube (7-2); The chamber wall of described rear pipe cavity (12) is provided with expansion drum (18); The chamber wall of described front pipe cavity (3) is provided with alarm (17); Described front pipe cavity (3) or after manage and be furnished with some fillers (10) in the cavity (12).
2. a kind of two-tube double tube plate heat exchanger according to claim 1, it is characterized in that: described inner tube (7-1) and described outer tube (7-2) are coaxial.
3. the two-tube double tube plate heat exchanger of a kind of alarm type according to claim 1 is characterized in that: described inner tube (7-1) be connected outer tube (7-2) as a whole respectively with described the second front tube sheet (4) be connected the first back tube sheet (13) expanded joint and be connected.
4. a kind of two-tube double tube plate heat exchanger according to claim 1, it is characterized in that: the minimum dimension of described filler (10) is greater than the size of intermediate cavity (7-3).
5. it is characterized in that according to claim 1 or 4 described a kind of two-tube double tube plate heat exchangers: described filler (10) is the solid piece of polyurethane.
6. a kind of two-tube double tube plate heat exchanger according to claim 1, it is characterized in that: described shell wall (6) is provided with boss (8).
7. a kind of two-tube double tube plate heat exchanger according to claim 1, it is characterized in that: described shell wall bottom is provided with draining switch (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220423161 CN202793102U (en) | 2012-08-24 | 2012-08-24 | Double-tube and double-tube sheet heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220423161 CN202793102U (en) | 2012-08-24 | 2012-08-24 | Double-tube and double-tube sheet heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202793102U true CN202793102U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220423161 Expired - Fee Related CN202793102U (en) | 2012-08-24 | 2012-08-24 | Double-tube and double-tube sheet heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202793102U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629954A (en) * | 2012-08-24 | 2014-03-12 | 风凯换热器制造(常州)有限公司 | Double-tube and double-tube-plate heat exchanger |
| CN107944092A (en) * | 2017-11-01 | 2018-04-20 | 常州大学 | A kind of band two-tube double tube plate heat exchanger tube to plate welding method of expansion joint |
-
2012
- 2012-08-24 CN CN 201220423161 patent/CN202793102U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629954A (en) * | 2012-08-24 | 2014-03-12 | 风凯换热器制造(常州)有限公司 | Double-tube and double-tube-plate heat exchanger |
| CN107944092A (en) * | 2017-11-01 | 2018-04-20 | 常州大学 | A kind of band two-tube double tube plate heat exchanger tube to plate welding method of expansion joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20210824 |