CN212081273U - Purging device for heat exchanger tube bank of waste heat boiler and waste heat boiler with purging device - Google Patents
Purging device for heat exchanger tube bank of waste heat boiler and waste heat boiler with purging device Download PDFInfo
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- CN212081273U CN212081273U CN202020564193.4U CN202020564193U CN212081273U CN 212081273 U CN212081273 U CN 212081273U CN 202020564193 U CN202020564193 U CN 202020564193U CN 212081273 U CN212081273 U CN 212081273U
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Abstract
The embodiment of the utility model discloses exhaust-heat boiler heat exchanger tube bank sweep device and take exhaust-heat boiler that sweeps device. The device sweeps unit and compressed air gas holder including first pipeline, multiunit, and every group sweeps the unit and includes the second pipeline, coupling hose, spray gun and valve, the one end of first pipeline and exhaust-heat boiler's reservation compressed air interface connection, the other end and compressed air gas holder connection, the compressed air gas holder includes a plurality of exports, every exit linkage is a set of the unit that sweeps, to every export, this export is connected with the valve through the second pipeline, the valve passes through coupling hose and is connected with the spray gun. Use compressed air to sweep the heat exchanger tube bank through the spray gun from this, avoid damaging the tube bank metal and reduce safe risk, owing to use the spray gun can directly sweep the heat exchanger tube bank, low in labor strength consequently reduces work load and improves the scale removal effect, because the utility model discloses a sweep the device equipment simply, consequently reduce cost and reduce the construction degree of difficulty.
Description
Technical Field
The utility model relates to a bank of tubes sweeps technical field, particularly, relates to a waste heat boiler that sweeps device and area of waste heat boiler heat exchanger bank of tubes sweeps device.
Background
After the surface of the tube bank of the waste heat boiler heat exchanger of the gas turbine unit is oxidized, rusted and scaled, the exhaust gas temperature of the waste heat boiler is increased, the side resistance of the exhaust gas is increased, and the heat exchange efficiency is reduced.
Currently, descaling the tube bank of the heat exchanger of the waste heat boiler comprises the following four methods:
the first method is mechanical descaling, and mainly adopts tools such as a flat shovel, a steel wire brush, a hand hammer and the like to mechanically descale the heat exchanger tube bank of the waste heat boiler; the second method is descaling by a high-pressure water gun, and the high-pressure water is mainly adopted for washing the heat exchanger tube bank of the waste heat boiler; the third method is that the combustible gas is directionally blasted to remove the scale, the combustible gas is mainly used for blasting in a special device, and the energy is instantaneously released to generate shock waves which directionally act on fins on the heating surface of a heat exchanger tube bank of the waste heat boiler to remove the scale; and the fourth step is dry ice purging and descaling, wherein a dry ice particle purging device is mainly used for purging the heat exchanger tube bank of the waste heat boiler to achieve the purpose of descaling.
However, the four methods described above have the following disadvantages:
first mechanical descaling: the labor intensity is high, the efficiency is low, the metal surface is easy to damage, and the descaling effect is poor; descaling by a second high-pressure water gun: due to the position obstruction of the boiler bottom limiting device and the through-wall pipe, waterproof bedding of the boiler bottom cannot be carried out, the heat preservation and water soaking of the boiler bottom are easy to lose effectiveness after descaling through a high-pressure water gun, and in order to avoid water soaking, all boiler bottom plates are required to be dismantled and heat preservation is carried out, so that the great workload is increased; and (3) descaling by directional blasting of a third combustible gas: the method has the advantages of complex device, high construction difficulty, low safety coefficient and high investment; and (4) purging and descaling with dry ice: the method has low safety coefficient, the influence of quenching on the tube bank cannot be determined, and the investment is huge.
Therefore, the four methods have the defects of easy damage to the metal of the heat exchanger tube bank of the waste heat boiler, poor descaling effect, high safety risk, high cost and high construction difficulty.
SUMMERY OF THE UTILITY MODEL
The utility model provides a waste heat boiler heat exchanger tube bank sweep device and take waste heat boiler that sweeps device to avoid damaging waste heat boiler heat exchanger tube bank metal and reduced the safety risk, reduced work load and improved the scale removal effect, the cost is reduced and reduced the construction degree of difficulty. The specific technical scheme is as follows:
in a first aspect, the utility model provides a device that sweeps of exhaust-heat boiler heat exchanger tube bank, include: the device comprises a first pipeline, a plurality of groups of blowing units and a compressed air storage tank, wherein each group of blowing units comprises a second pipeline, a connecting hose, a spray gun and a valve;
one end of the first pipeline is connected with a reserved compressed air interface of the waste heat boiler, the other end of the first pipeline is connected with the compressed air storage tank, the compressed air storage tank comprises a plurality of outlets, each outlet is connected with a group of purging units, and the number of the outlets is the same as the number of the groups of purging units;
for each outlet, the outlet is connected with the valve through the second pipeline, the valve is connected with the spray gun through the connecting hose, and the pressure of compressed air sprayed out by the spray gun is 8 bar.
Optionally, the spray gun is a spray gun with a manual switch handle.
Optionally, the length of the body of the lance is 300mm, 600mm or 1000 mm.
Optionally, the caliber of the gun nozzle of the spray gun is 6mm or 8 mm.
In a second aspect, the utility model provides a waste heat boiler of device is swept in area, include waste heat boiler and sweep the device, waste heat boiler's reservation compressed air interface with sweep the first pipe connection of device, wherein, it is above-mentioned arbitrary to sweep the device.
Optionally, the reserved compressed air interface is a reserved compressed air interface of 3.5 meters.
As can be seen from the above, in this embodiment, the purging device includes a first pipeline, a plurality of groups of purging units and a compressed air storage tank, where each group of purging units includes a second pipeline, a connection hose, a spray gun and a valve, one end of the first pipeline is connected to a reserved compressed air interface of the exhaust-heat boiler, the other end of the first pipeline is connected to the compressed air storage tank, the compressed air storage tank includes a plurality of outlets, each outlet is connected to one group of purging units, the number of outlets is the same as the number of groups of purging units, for each outlet, the outlet is connected to the valve through the second pipeline, and the valve is connected to the spray gun through the connection hose. From this, make compressed air store in the compressed air gas holder, use compressed air to sweep the heat exchanger tube bank through the spray gun, because compressed air can not damage the metal surface and can not exert an influence to the heat exchanger tube bank, consequently avoided damaging exhaust-heat boiler heat exchanger tube bank metal and reduced the safety risk, can directly sweep the heat exchanger tube bank owing to use the spray gun, need not to dismantle any part, low in labor strength, convenient easy to carry out, consequently reduced work load and improved the scale removal effect, because the utility model provides a sweep the device equipment simply, consequently, the cost is reduced and the construction degree of difficulty has been reduced. Of course, it is not necessary for any product or method of the invention to achieve all of the above-described advantages at the same time.
The utility model discloses innovation point includes:
1. the compressed air is stored in the compressed air storage tank, the compressed air is used for purging the heat exchanger tube bank through the spray gun, and the compressed air cannot damage the metal surface and cannot influence the heat exchanger tube bank, so that the damage to the metal of the heat exchanger tube bank of the waste heat boiler is avoided, and the safety risk is reduced.
2. Owing to use the spray gun can directly sweep the heat exchanger tube bank, need not to dismantle any part, low in labor strength, convenient easy implementation has consequently reduced work load and has improved the scale removal effect, because the utility model provides a sweep the device equipment simply, consequently, the cost is reduced and the construction degree of difficulty has been reduced.
3. The exhaust-heat boiler with the purging device can directly purge by utilizing the compressed air of the exhaust-heat boiler, does not need other purging devices, and improves convenience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is to be understood that the drawings in the following description are merely exemplary of some embodiments of the invention. For a person skilled in the art, without inventive effort, further figures can be obtained from these figures.
Fig. 1 is a schematic structural diagram of a purging device of a heat exchanger tube bank of a waste heat boiler provided by an embodiment of the utility model.
In fig. 1, 1 a first pipeline, 2 a compressed air storage tank, 3 a connecting hose, 4 a spray gun, 5 a valve and 10 a waste heat boiler.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
It should be noted that the terms "comprises" and "comprising" and any variations thereof in the embodiments and drawings of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the utility model discloses exhaust-heat boiler heat exchanger tube bank sweep device and take exhaust-heat boiler that sweeps device to simplify the construction degree of difficulty, reduce cost. The embodiments of the present invention will be described in detail below.
Fig. 1 is a schematic structural diagram of a purging device of a heat exchanger tube bank of a waste heat boiler provided by an embodiment of the utility model.
Referring to fig. 1, the embodiment of the utility model provides a device that sweeps of exhaust-heat boiler heat exchanger tube bank includes that first pipeline 1, multiunit sweep unit and compressed air gas holder 2, and wherein, every group sweeps the unit and includes second pipeline, coupling hose 3, spray gun 4 and valve 5.
One end of the first pipeline 1 is connected with a reserved compressed air interface of the waste heat boiler, the other end of the first pipeline is connected with the compressed air storage tank 2, the compressed air storage tank 2 comprises a plurality of outlets, each outlet is connected with a group of purging units, and the number of the outlets is the same as the number of the groups of purging units.
For each outlet, the outlet is connected by a second conduit to a valve 5, the valve 5 being connected by a connecting hose 3 to a spray gun 4.
Through the connection, compressed air in the waste heat boiler enters the compressed air storage tank 2 through the reserved compressed air interface and the first pipeline 1, so that compressed air is stored in the compressed air storage tank 2. When using, sweeping the unit to every group, opening valve 5, compressed air enters into spray gun 4 through coupling hose 3 in the compressed air gas holder 2, and the personnel that sweep can use spray gun 4 to sweep the rust cleaning to heat exchanger tube bank from the top down and from interior to exterior row by row, certainly, when using, can use the multiunit simultaneously to sweep the unit and also can only use a set of unit that sweeps according to actual conditions, the embodiment of the utility model discloses do not any restriction to this.
For example, the shape of the spray gun 3 may be a vertical gun body connected with a gun nozzle, the length of the gun body of the spray gun 3 is 300mm, 600mm or 1000mm, the length of the gun body can be changed according to actual use requirements, the caliber of the gun nozzle of the spray gun 3 is 6mm or 8mm, the caliber of the gun nozzle can be changed according to actual use requirements, and the pressure of compressed air sprayed by the spray gun 3 is 8 bar.
Illustratively, the spray gun 3 may be a spray gun with a manually openable and closable handle.
The embodiment of the utility model provides an in, sweep the device and include first pipeline 1, the multiunit sweeps unit and compressed air gas holder 2, wherein, every group sweeps the unit and includes the second pipeline, coupling hose 3, spray gun 4 and valve 5, the one end of first pipeline 1 and exhaust-heat boiler's reservation compressed air interface connection, the other end is connected with compressed air gas holder 2, compressed air gas holder 2 includes a plurality of exports, every exit linkage is a set of unit that sweeps, wherein, the quantity of export is the same with the group number that sweeps the unit, to every export, this export is connected with valve 5 through the second pipeline, valve 5 passes through coupling hose 3 and is connected with spray gun 4. From this, make compressed air store in the compressed air gas holder 2, use compressed air to sweep the heat exchanger bank of tubes through spray gun 4, because compressed air can not damage the metal surface and can not exert an influence to the heat exchanger bank of tubes, consequently avoided damaging exhaust-heat boiler heat exchanger bank of tubes metal and reduced the safety risk, can directly sweep the heat exchanger bank of tubes owing to use spray gun 4, need not to dismantle any part, low in labor strength, convenient easy to carry out, consequently reduced work load and improved the scale removal effect, because the utility model provides a sweep the device equipment simply, consequently, the cost is reduced and the construction degree of difficulty has been reduced.
When the device is in actual use, safe and efficient purging is carried out on the two waste heat boiler heat exchanger tube banks in 10 days, and 3330 kg of rust slag is cleaned. And after the waste heat boiler is supplied with water, no leakage point exists in the process of inspection, and the fact that the fins on the heating surface of the heat exchanger tube bank are not damaged by the blowing of the compressed air is proved, so that experience is accumulated for later descaling of the heat exchanger tube bank of the waste heat boiler.
Continuing to refer to fig. 1, on the basis of the device that sweeps of the above-mentioned exhaust-heat boiler heat exchanger bank of providing, the embodiment of the utility model provides a still provides an exhaust-heat boiler of taking the device that sweeps, including exhaust-heat boiler 10 and the device that sweeps, exhaust-heat boiler 10 reserves compressed air interface and the first pipeline 1 of the device that sweeps is connected, and wherein, the device that sweeps that the device provided for any above-mentioned embodiment.
Illustratively, the reserved compressed air interface is a 3.5 meter reserved compressed air interface.
The embodiment of the utility model provides an in, area sweeps exhaust-heat boiler of device, include exhaust-heat boiler 10 and sweep the device, exhaust-heat boiler 10 reserves the compressed air interface and is connected with the first pipeline 1 that sweeps the device, and wherein, the device that sweeps that the device provided for above-mentioned arbitrary embodiment. From this, make compressed air store in the compressed air gas holder 2, use compressed air to sweep the heat exchanger bank of tubes through spray gun 4, because compressed air can not damage the metal surface and can not exert an influence to the heat exchanger bank of tubes, consequently avoided damaging exhaust-heat boiler heat exchanger bank of tubes metal and reduced the safety risk, can directly sweep the heat exchanger bank of tubes owing to use spray gun 4, need not to dismantle any part, low in labor strength, convenient easy to carry out, consequently reduced work load and improved the scale removal effect, because the utility model provides a sweep the device equipment simply, consequently, the cost is reduced and the construction degree of difficulty has been reduced, because can directly utilize the compressed air of exhaust-heat boiler itself to sweep, and need not other device that sweeps, improved the convenience.
Those of ordinary skill in the art will understand that: the figures are schematic representations of one embodiment, and the blocks or processes in the figures are not necessarily required to practice the present invention.
Those of ordinary skill in the art will understand that: modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be located in one or more devices different from the embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (6)
1. The utility model provides a device that sweeps of exhaust-heat boiler heat exchanger tube bank which characterized in that includes: the device comprises a first pipeline, a plurality of groups of blowing units and a compressed air storage tank, wherein each group of blowing units comprises a second pipeline, a connecting hose, a spray gun and a valve;
one end of the first pipeline is connected with a reserved compressed air interface of the waste heat boiler, the other end of the first pipeline is connected with the compressed air storage tank, the compressed air storage tank comprises a plurality of outlets, each outlet is connected with a group of purging units, and the number of the outlets is the same as the number of the groups of purging units;
for each outlet, the outlet is connected with the valve through the second pipeline, the valve is connected with the spray gun through the connecting hose, and the pressure of compressed air sprayed out by the spray gun is 8 bar.
2. The purge apparatus of claim 1, wherein the spray gun is a spray gun with a manually operated switch handle.
3. The purge apparatus of claim 1, wherein the lance has a length of a lance body of 300mm, 600mm, or 1000 mm.
4. The purge apparatus of claim 1, wherein the bore of the nozzle of the lance is 6mm or 8 mm.
5. A waste heat boiler with a purging device is characterized by comprising the waste heat boiler and the purging device, wherein a reserved compressed air interface of the waste heat boiler is connected with a first pipeline of the purging device, and the purging device is the purging device according to any one of claims 1 to 4.
6. The exhaust-heat boiler as claimed in claim 5, characterized in that the reserve compressed air connection is a 3.5-meter reserve compressed air connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020564193.4U CN212081273U (en) | 2020-04-16 | 2020-04-16 | Purging device for heat exchanger tube bank of waste heat boiler and waste heat boiler with purging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020564193.4U CN212081273U (en) | 2020-04-16 | 2020-04-16 | Purging device for heat exchanger tube bank of waste heat boiler and waste heat boiler with purging device |
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| CN212081273U true CN212081273U (en) | 2020-12-04 |
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| CN202020564193.4U Active CN212081273U (en) | 2020-04-16 | 2020-04-16 | Purging device for heat exchanger tube bank of waste heat boiler and waste heat boiler with purging device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636344A (en) * | 2020-12-15 | 2022-06-17 | 华能北京热电有限责任公司 | Waste heat boiler heat exchanger tube row purging device and method thereof |
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2020
- 2020-04-16 CN CN202020564193.4U patent/CN212081273U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636344A (en) * | 2020-12-15 | 2022-06-17 | 华能北京热电有限责任公司 | Waste heat boiler heat exchanger tube row purging device and method thereof |
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