CN204388656U - A kind of heat exchanger - Google Patents
A kind of heat exchanger Download PDFInfo
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- CN204388656U CN204388656U CN201420869275.4U CN201420869275U CN204388656U CN 204388656 U CN204388656 U CN 204388656U CN 201420869275 U CN201420869275 U CN 201420869275U CN 204388656 U CN204388656 U CN 204388656U
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Abstract
The utility model provides a kind of heat exchanger, there is some heat exchange layer, each described heat exchange layer has some heat exchange modules, described heat exchange module comprises heat exchanger tube row, model calling pipe is connected with between the adjacent described heat exchange module of same described heat exchange layer, also comprise the bypass tube connector between the main header of the water inlet being connected to described heat exchanger and the main header of water outlet, described bypass tube connector has interface, be connected with described model calling pipe by described interface; The pipeline section that described bypass tube connector is corresponding with each described heat exchange module is provided with bypass on-off valve.When a certain heat exchange module leaks, this leakage module excised, the not overall excision of each heat exchange layer, does not affect the normal heat exchange of other heat exchange modules, and overcomes the unbalanced problem of heat exchange that traditional approach causes, and reduces the loss of heat exchange area as far as possible.
Description
Technical field
The utility model relates to boiler heat exchange technical field, particularly a kind of heat exchanger.
Background technology
The major function of heat exchanger ensures that technical process is to the specified temp required by medium, is also one of capital equipment improving energy utilization rate simultaneously.It is widely used in the fields such as oil, chemical industry, metallurgy, electric power, boats and ships, central heating, refrigeration air-conditioner, machinery, food, pharmacy as important thermal power transfer equipment, occupies critical role aborning.
After low-pressure superheater in conventional boiler, reheater, economizer and air preheater, low temperature (pressure) the economizer majority of recovered flue gas She heat selects the pattern of snake-like tube row.All heat exchanger tube rows are collected in the main header of same water inlet and the main header of water outlet by snake-like tube row formula heat exchanger, this structure is simple and easy to processing, but there is a kind of defect, namely when heat exchanger tube occurs to leak, cannot isolate online, plugging process etc., need whole heat exchanger off-the-line, this just likely causes system normally to run.The problems such as online isolation cannot be realized to solve traditional snake-like tube row formula heat exchanger, heat exchanger for the low-quality heat of recovery boiler flue gas adopts hierarchical design, namely heat exchanger entirety is made up of several heat exchange layer, and each heat exchange layer is vertically in different height.
Each heat exchange layer has some heat exchange modules, be communicated with between each heat exchange module, each heat exchange layer is independently equipped with into water header and water outlet header, water inlet header place is provided with inlet valve, water outlet header is provided with flowing water Valve, water inlet header supplies water to heat exchange layer, and the water of the heat exchanger tube row in heat exchange layer converges in water outlet header.When a certain heat exchange module of heat exchanger occurs to leak, only need inlet valve and the flowing water Valve of closing the heat exchange layer of leaking, can realize isolating this heat exchange layer online, heat exchanger need not be overall out of service.
Although this heat exchanger solves the problem that traditional snake-like tube row formula heat exchanger cannot realize online isolation, a heat exchange module in heat exchange layer is revealed, and needs to isolate whole heat exchange layer, and after online isolation, the loss of heat exchanger heat exchange area reaches 25% even 50%; And, due to the excision of heat exchange layer, cause the uneven and unstable of heat exchange in heat exchanger short transverse, easily cause the problems such as heat transfer effect worsens, and heat exchanger exit cigarette temperature is uneven; In addition, and the excision of leaking layer heat exchange module also can affect to system cloud gray model.
Therefore, how a kind of heat exchanger is provided, makes it occur when leaking, to realize online isolation and reveal module, and there is less heat exchange area loss, and then keep the normal operation of good heat transfer effect, guarantee system, be those skilled in the art's technical issues that need to address.
Utility model content
The purpose of this utility model is for providing a kind of heat exchanger.This heat exchanger can not only realize online isolation and reveal module when there is leakage, and has less heat exchange area loss, and then can keep the normal operation of good heat transfer effect, guarantee system.
For solving the problems of the technologies described above, the utility model provides a kind of heat exchanger, there is some heat exchange layer, each described heat exchange layer has some heat exchange modules, described heat exchange module comprises heat exchanger tube row, is connected with model calling pipe, also comprises the bypass tube connector between the main header of the water inlet being connected to described heat exchanger and the main header of water outlet between the adjacent described heat exchange module of same described heat exchange layer, described bypass tube connector has interface, is connected with described model calling pipe by described interface; The pipeline section that described bypass tube connector is corresponding with each described heat exchange module is provided with bypass on-off valve.
So, when a certain heat exchange module leaks, this heat exchange module is excised, simultaneously, open the bypass on-off valve corresponding with this heat exchange module, make to confess from the main header of water inlet, should flow through from the bypass tube connector pipeline section at this bypass on-off valve place through the heat-exchange working medium of this heat exchange module, and enter the heat exchange module in downstream by model calling pipe.
Visible; this design can realize freely switching between heat exchange module; namely arbitrary independent heat exchange module is excised; further, the normal heat exchange of other heat exchange modules is not affected, when occurring to leak; even if can isolate online; and reduce the loss of heat exchange area as little as possible, the not overall excision of each heat exchange layer, and overcome the unbalanced problem of heat exchange that traditional approach causes.
Preferably, also comprise the first on-off valve and the second on-off valve that are located at described model calling pipe, the two is separately positioned on the both sides of described model calling pipe and described bypass tube connector junction.
Preferably, described heat exchange module also comprises the water inlet header and water outlet header of to arrange with described heat exchanger tube and being communicated with, the two is communicated to the main header of described water inlet and the main header of described water outlet respectively, and described model calling pipe tilts to be connected between the upper end of described water outlet header and the lower end of described water inlet header.
Preferably, also comprise that one end is connected to each described heat exchange module, the other end is connected to drain pipe and evacuated tube respectively, each described drain pipe and described evacuated tube are provided with hydrophobic valve and drain tap.
Preferably, described drain pipe is connected to the lower end of described water outlet header, and described evacuated tube is connected to the upper end of described water inlet header.
Preferably, each described drain pipe and described evacuated tube have some interfaces, and are connected with each described heat exchange module by described interface, are connected to same described drain pipe and same described evacuated tube to make the some heat exchange modules be set up in parallel at vertical direction.
Preferably, the caliber of described bypass on-off valve is identical with the caliber of described model calling pipe.
Accompanying drawing explanation
The front view of a kind of detailed description of the invention of the heat exchanger that Fig. 1 provides for the utility model;
Fig. 2 is the top view of the heat exchanger in Fig. 1.
Fig. 1-Fig. 2:
Heat exchange module 100, heat exchanger tube row 101, water inlet header 102, water outlet header 103, bypass tube connector 200, bypass on-off valve 201, model calling pipe 300, first on-off valve 301, second on-off valve 302, three-way connector 400, main header 500 of intaking, the main header 600 of water outlet, drain pipe 700, hydrophobic valve 701, evacuated tube 800, drain tap 801
Detailed description of the invention
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1 and Fig. 2, the front view of a kind of detailed description of the invention of the heat exchanger that Fig. 1 provides for the utility model; Fig. 2 is the top view of the heat exchanger in Fig. 1.
As depicted in figs. 1 and 2, the heat exchanger that the utility model provides has some heat exchange layer, and each heat exchange layer has different height at vertical direction, and each described heat exchange layer has some heat exchange modules 100, therefore, heat exchanger has the some heat exchange modules 100 at space array.Each heat exchange module 100 includes snakelike heat exchanger tube row 101, be connected with model calling pipe 300 between the adjacent heat exchanger tube row 101 of same heat exchange layer, arrange 101 with the heat exchanger tube that the heat-exchange working medium enabling the heat exchanger tube of upstream arrange 101 flows into downstream by model calling pipe 300.
In addition, heat exchanger also has into the main header of water 500 and the main header 600 of water outlet, and main header 500 of intaking supplies heat-exchange working medium to each heat exchange module 100, and the heat-exchange working medium that each heat exchange module 100 flows out is drawn in the main header 600 of water outlet.Bypass tube connector 200 is also connected with between main header 500 of intaking and the main header 600 of water outlet, this bypass tube connector 200 has interface, be connected with model calling pipe 300 by interface, such as, between the interface and heat exchange module 100 of bypass tube connector 200, three-way connector 400 is set, in addition, the bypass tube connector 200 of each heat exchange module 100 correspondence is also provided with bypass on-off valve 201.
So, when a certain heat exchange module 100 leaks, this heat exchange module 100 is excised, simultaneously, open the bypass on-off valve 201 corresponding with this heat exchange module 100, make to confess from the main header 500 of water inlet, should flow through from bypass tube connector 200 pipeline section at this bypass on-off valve 201 place through the heat-exchange working medium of this heat exchange module 100, and enter the heat exchange module 100 in downstream by model calling pipe 300.
Visible; this design can realize freely switching between heat exchange module 100; namely arbitrary independent heat exchange module 100 is excised; the not overall excision of each heat exchange layer; do not affect the normal heat exchange of other heat exchange modules 100; and overcome the unbalanced problem of heat exchange that traditional approach causes, and reduce the loss of heat exchange area as far as possible.
Further, model calling pipe 300 can also be provided with the first on-off valve 301 and the second on-off valve 302, the two is separately positioned on the both sides of the junction of model calling pipe 300 and bypass tube connector 200, respectively as the outlet water control valve of the heat exchange module 100 of upstream, and the water inlet control valve of the heat exchange module 100 in downstream.
The second on-off valve 302 upstream is located at, course of work when illustrating that this heat exchanger leaks and when normally working for the first on-off valve 301:
During normal operation, bypass on-off valve 201 Close All, first on-off valve 301 of each model calling pipe 300 and the second on-off valve 302 are all opened, heat-exchange working medium from water inlet main header 500 enter each heat exchange module 100 water inlet header 102, heat exchanger tube row 101, water outlet header 103, and the model calling pipe 300 between two heat exchange modules 100, finally draw in the main header 600 of water outlet.
When heat exchange module 100 is revealed, close the second on-off valve 302 of this heat exchange module 100 upstream and first on-off valve 301 in downstream, namely water inlet and the water outlet of this heat exchange module 100 is closed, simultaneously, open the bypass on-off valve 201 corresponding with this heat exchange module 100, heat-exchange working medium flows out from the heat exchange module 100 revealing module upstream, through this section of bypass tube connector 200, enters the heat exchange module 100 revealing module down-stream and continues heat exchange.
The Inlet and outlet water that first on-off valve 301 and the second on-off valve 302 can control each heat exchange module 100 is easily set, certainly, also artificial mounting pipe can block up after unloading leakage module, but, because heat-exchange working medium temperature is higher, pressure is comparatively large, said method there is better security.
Further, heat exchange module 100 also comprises arranges the 101 water inlet header 102 be connected and water outlet headers 103 with heat exchanger tube, the heat-exchange working medium that main header 500 of intaking provides enters heat exchanger tube row 101 from water inlet header 102, release heat in heat exchanger tube row 101, afterwards, enter model calling pipe 300 from water outlet header 103, then flow into the heat exchange module 100 in downstream.Model calling pipe 300 is connected between the minimum point of the water inlet header 102 of the peak of the water outlet header 103 of the heat exchange module 100 of upstream and the heat exchange module 100 in downstream obliquely.
This setup has following benefit:
The first, on heat exchanger, water is abundant, has heat-exchange working medium circulation, reduce the existence at water-filling dead angle in each pipeline;
The second, the heat-exchange working medium of upstream heat exchange module 100 flows to downstream heat exchange module 100 from height to low, discharges detain gas in heat exchanger and, for the impact of heat transfer effect, improves heat transfer effect;
3rd, for the first on-off valve 301 and the second on-off valve 302 provide suitable installing space, reduce the price raising of heat exchanger, reduce manufacturing cost, be particularly advantageous in the problem solving transformation project place limited space.
In another embodiment, heat exchanger also comprises drain pipe 700 and evacuated tube 800, and one end of each drain pipe 700 and evacuated tube 800 is connected to each heat exchange module 100, and the other end is connected to steam trap connection and emptier respectively, further, the two is also respectively equipped with drain valve and air bleeding valve.
When certain heat exchange module 100 is out of service, open hydrophobic valve 701 and drain tap 801, the heat-exchange working medium in emptying heat exchange module 100, to avoid the stagnant water dry combustion method in heat exchange module 100, thus avoid destroying heat exchanger tube.
Preferably, drain pipe 700 can be connected to the lower end of the water outlet header 103 of heat exchange module 100, evacuated tube 800 is connected to the upper end into water header 102.So, utilize heat-exchange working medium from the potential energy of the inconsistent flowing of eminence, and the characteristic upwards flowed in conjunction with gas density is less, can emptying heat-exchange working medium and gas more for a full due, and save the energy.
Further, each drain pipe 700 and evacuated tube 800 can have several interfaces, for being connected with heat exchange module 100, thus, each heat exchange module 100 that in the vertical direction can be made to be set up in parallel shares same drain pipe 700 and same evacuated tube 800, to reduce drain pipe 700 and evacuated tube 800 number, save cost, simplify heat exchanger and arrange.
Further, the caliber of above-mentioned bypass on-off valve 201 is identical with model calling pipe 300, so, the pressure of heat exchanging working medium can not have an impact, avoids the fluctuation of heat-exchange working medium in heat exchanger, ensure heat exchange stability and heat transfer effect.
Be to be understood that, above-mentioned bypass tube connector 200 refers to can the pipeline of connectivity module tube connector 300 and the main header 500 of water inlet, the main header 600 of water outlet, it might not be connected directly to into the main header of water 500 or the main header 600 of water outlet, such as, water inlet header 102 or the water outlet header 103 of each heat exchange module 100 can be connected directly to, thus indirectly be communicated with the main header 500 of water inlet and the main header 600 of water outlet.
Above a kind of heat exchanger provided by the utility model is described in detail, wherein apply specific case to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (7)
1. a heat exchanger, there is some heat exchange layer, each described heat exchange layer has some heat exchange modules (100), described heat exchange module (100) comprises heat exchanger tube row (101), model calling pipe (300) is connected with between the adjacent described heat exchange module (100) of same described heat exchange layer, it is characterized in that, also comprise the bypass tube connector (200) between the main header of the water inlet being connected to described heat exchanger (500) and the main header of water outlet (600), described bypass tube connector (200) has interface, be connected with described model calling pipe (300) by described interface, described bypass tube connector (200) pipeline section corresponding with each described heat exchange module (100) is provided with bypass on-off valve (201).
2. heat exchanger as claimed in claim 1, it is characterized in that, also comprise the first on-off valve (301) and the second on-off valve (302) that are located at described model calling pipe (300), the two is separately positioned on the both sides of described model calling pipe (300) and described bypass tube connector (200) junction.
3. heat exchanger as claimed in claim 1 or 2, it is characterized in that, described heat exchange module (100) also comprises to arrange the water inlet header (102) and water outlet header (103) that (101) be communicated with described heat exchanger tube, the two is communicated to the main header of described water inlet (500) and the main header of described water outlet (600), between the upper end that the inclination of described model calling pipe (300) is connected to described water outlet header (103) and the lower end of described water inlet header (102) respectively.
4. heat exchanger as claimed in claim 3, it is characterized in that, also comprise that one end is connected to each described heat exchange module (100), the other end is connected to drain pipe (700) respectively and evacuated tube (800), each described drain pipe (700) and described evacuated tube (800) are provided with hydrophobic valve (701) and drain tap (801).
5. heat exchanger as claimed in claim 4, it is characterized in that, described drain pipe (700) is connected to the lower end of described water outlet header (103), and described evacuated tube (800) is connected to the upper end of described water inlet header (102).
6. heat exchanger as claimed in claim 4, it is characterized in that, each described drain pipe (700) and described evacuated tube (800) have some interfaces, and be connected with each described heat exchange module (100) by described interface, be connected to same described drain pipe (700) and same described evacuated tube (800) to make the some heat exchange modules (100) be set up in parallel at vertical direction.
7. heat exchanger as claimed in claim 1 or 2, it is characterized in that, the caliber of described bypass on-off valve (201) is identical with the caliber of described model calling pipe (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869275.4U CN204388656U (en) | 2014-12-31 | 2014-12-31 | A kind of heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869275.4U CN204388656U (en) | 2014-12-31 | 2014-12-31 | A kind of heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN204388656U true CN204388656U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420869275.4U Active CN204388656U (en) | 2014-12-31 | 2014-12-31 | A kind of heat exchanger |
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| CN (1) | CN204388656U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357553A (en) * | 2017-11-26 | 2019-02-19 | 上海电气电站环保工程有限公司 | A kind of pipe heat exchanger of easy access |
| CN109630212A (en) * | 2018-12-19 | 2019-04-16 | 中国船舶重工集团公司第七0三研究所 | Temperature Gas-cooled Reactor Helium Gas Turbine electricity generation system |
-
2014
- 2014-12-31 CN CN201420869275.4U patent/CN204388656U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357553A (en) * | 2017-11-26 | 2019-02-19 | 上海电气电站环保工程有限公司 | A kind of pipe heat exchanger of easy access |
| CN109630212A (en) * | 2018-12-19 | 2019-04-16 | 中国船舶重工集团公司第七0三研究所 | Temperature Gas-cooled Reactor Helium Gas Turbine electricity generation system |
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