CN114279261A

CN114279261A - Cleaning system and cleaning method for air-cooled surface type heat exchanger

Info

Publication number: CN114279261A
Application number: CN202210006278.4A
Authority: CN
Inventors: 李强; 韩鹏飞; 刘继锋; 周剑锋; 李彦辉; 李跃林; 吴利宁
Original assignee: Inner Mongolia Mengdong Energy Co ltd; National Energy Group Guoyuan Power Co Ltd
Current assignee: Inner Mongolia Mengdong Energy Co ltd; National Energy Group Guoyuan Power Co Ltd
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-04-05

Abstract

The application provides an air-cooled surface type heat exchanger cleaning system and a cleaning method, relates to the technical field of heat exchangers, and solves the technical problem that the labor intensity of operators is high when the heat exchange surface of an air-cooled surface type heat exchanger is cleaned in a manual cleaning mode at present. In the system, a first slide rail, a second slide rail and a first rack are arranged on a heat exchanger in parallel; the first end of the escalator is clamped on the first sliding rail, and the second end of the escalator is clamped on the second sliding rail; the first gear is connected with the escalator, the first gear is meshed with the first rack, and the first driving device is connected with the first gear; the target sliding rail and the target rack are arranged on the escalator in parallel, the connecting part of the spray head device is clamped on the target sliding rail, the target gear is connected with the spray head device, the target gear is meshed with the target rack, and the target driving device is connected with the target gear.

Description

Cleaning system and cleaning method for air-cooled surface type heat exchanger

Technical Field

The application relates to the technical field of heat exchangers, in particular to a cleaning system and a cleaning method for an air-cooled surface type heat exchanger.

Background

An air-cooled surface heat exchanger (ACC) is a common air-cooled device for power stations in water-deficient areas, and a large amount of dirt can be deposited on a heat exchange surface of the ACC due to the fact that the heat exchange surface is exposed to the environment for a long time. The deposited scale is usually a poor thermal conductor, which leads to a reduction in the heat transfer capacity of the air-cooled surface heat exchanger, and therefore, in order to ensure the heat transfer capacity of the air-cooled surface heat exchanger, the heat transfer surfaces thereof need to be cleaned.

At present, the heat exchange surface of the air-cooled surface type heat exchanger is usually cleaned in a manual cleaning mode, and the labor intensity of operators is high.

Disclosure of Invention

The application provides an air-cooled surface heat exchanger cleaning system and a cleaning method, which can be used for solving the technical problem that the labor intensity of operators is high when the heat exchange surface of an air-cooled surface heat exchanger is cleaned in a manual cleaning mode at present.

In a first aspect, an embodiment of the present application provides a cleaning system for an air-cooled surface heat exchanger, where the system includes a heat exchanger, a first slide rail, a second slide rail, a first rack, an escalator, a first gear, a first driving device, a spray head device, a target slide rail, a target rack, a target gear, and a target driving device;

the first slide rail, the second slide rail and the first rack are arranged on the heat exchanger in parallel;

the escalator is provided with a first end and a second end, the first end of the escalator is clamped on the first sliding rail, and the second end of the escalator is clamped on the second sliding rail;

the first gear is connected with the escalator, the first gear is meshed with the first rack, and the first driving device is connected with the first gear;

the target sliding rail and the target rack are arranged on the escalator in parallel, the spray head device is provided with a connecting part, the connecting part is clamped on the target sliding rail, the target gear is connected with the spray head device, the target gear is meshed with the target rack, and the target driving device is connected with the target gear.

Optionally, in one embodiment, the system further comprises a water feeding pipeline, and the spray head device comprises a water spraying assembly, wherein the water spraying assembly comprises a water inlet mother pipeline, a first water inlet branch pipeline, a second water inlet branch pipeline and a plurality of first nozzles;

the water feeding pipeline is arranged on the escalator, an outlet of the water feeding pipeline is communicated with an inlet of the water inlet main pipeline, and an inlet of the first water inlet branch pipeline and an inlet of the second water inlet branch pipeline are both communicated with an outlet of the water inlet main pipeline;

a part of the first nozzles of the plurality of first nozzles are disposed on the first water inlet branch pipe, and another part of the first nozzles of the plurality of first nozzles are disposed on the second water inlet branch pipe.

Optionally, in one embodiment, the system further comprises a water hose;

and the outlet of the water conveying pipeline is communicated with the inlet of the water inlet mother pipeline through the water conveying hose.

Optionally, in an embodiment, the system further includes a gas supply pipeline, and the spray head device further includes a gas injection assembly, where the gas injection assembly includes a gas inlet main pipeline, a first gas inlet branch pipeline, a second gas inlet branch pipeline, and a plurality of second nozzles;

the air supply pipeline is arranged on the escalator, an outlet of the air supply pipeline is communicated with an inlet of the air inlet main pipeline, and an inlet of the first air inlet branch pipeline and an inlet of the second air inlet branch pipeline are both communicated with an outlet of the air inlet main pipeline;

a part of the plurality of second nozzles is disposed on the first intake branch passage, and another part of the plurality of second nozzles is disposed on the second intake branch passage.

Optionally, in one embodiment, the system further comprises an air hose;

and the outlet of the air supply pipeline is communicated with the inlet of the air inlet main pipeline through the air supply hose.

Optionally, in an embodiment, the system further includes a water pump, a frequency conversion device, and a pressure detection device;

the water pump and the pressure detection device are arranged on the water supply pipeline, and the frequency conversion device is connected with the water pump.

Optionally, in one embodiment, the system further comprises a water supply, a first valve, a compressed air storage, and a second valve;

the water supply device is communicated with an inlet of the water supply pipeline, and the first valve is arranged on the water supply pipeline;

the compressed air storage device is communicated with an inlet of the air supply pipeline, and the second valve is arranged on the air supply pipeline.

Optionally, in an embodiment, the system further comprises a control unit and an ambient temperature detection device, wherein the control unit is connected with the first driving device, the target driving device, the first valve, the second valve and the ambient temperature detection device.

In a second aspect, an embodiment of the present application provides a method for cleaning an air-cooled surface heat exchanger using the cleaning system of the first aspect of the embodiment of the present application, where the method includes:

controlling the spray head device to move along the escalator for longitudinal cleaning;

controlling the escalator to move transversely to the next cleaning station;

and circularly and alternately executing the steps until the heat exchange surface to be cleaned is cleaned.

Optionally, in one embodiment, before the control shower device moves along the escalator for longitudinal washing, the method comprises:

acquiring the ambient temperature, and controlling the first valve to be opened or controlling the second valve to be opened according to the ambient temperature;

if the ambient temperature is a first preset temperature, controlling the first valve to be opened;

and if the ambient temperature is a second preset temperature, controlling the second valve to be opened.

The beneficial effects brought by the embodiment of the application are as follows:

by adopting the technical scheme provided by the embodiment of the application, the cleaning system of the air-cooled surface type heat exchanger comprises a heat exchanger, a first slide rail, a second slide rail, a first rack, a staircase, a first gear, a first driving device, a spray head device, a target slide rail, a target rack, a target gear and a target driving device; the first slide rail, the second slide rail and the first rack are arranged on the heat exchanger in parallel; the escalator is provided with a first end and a second end, the first end of the escalator is clamped on the first sliding rail, and the second end of the escalator is clamped on the second sliding rail; the first gear is connected with the escalator, the first gear is meshed with the first rack, and the first driving device is connected with the first gear; the target sliding rail and the target rack are arranged on the escalator in parallel, the spray head device is provided with a connecting part, the connecting part is clamped on the target sliding rail, the target gear is connected with the spray head device, the target gear is meshed with the target rack, and the target driving device is connected with the target gear; when the heat exchanger is cleaned, the first driving device and the target driving device are controlled to be started, the escalator can transversely translate along the first sliding rail and the second sliding rail, the sprayer device can longitudinally move along the escalator, and then automatic cleaning of the heat exchanger is completed, so that manual pushing of the flushing device can be avoided, and labor intensity is greatly reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. In the drawings:

fig. 1 is a schematic structural diagram of a cleaning system for an air-cooled surface heat exchanger according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another alternative cleaning system for an air-cooled surface heat exchanger according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a cleaning system for an air-cooled surface heat exchanger according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a cleaning system for an air-cooled surface heat exchanger according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a cleaning system for an air-cooled surface heat exchanger according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a cleaning system for an air-cooled surface heat exchanger according to an embodiment of the present application;

FIG. 7 is a schematic flow chart illustrating a method for cleaning an air-cooled surface heat exchanger according to an embodiment of the present disclosure;

fig. 8 is a schematic flow chart of another cleaning method for an air-cooled surface heat exchanger according to an embodiment of the present application.

Reference numerals:

10-air cooling surface type heat exchanger cleaning system; 101-heat exchanger; 102-a first slide rail; 103-a second slide rail; 104 — a first rack; 105-an escalator; 106 — a first gear; 107 — first drive means; 108 — a spray head device; 1081-inlet manifold line; 1082 — a first water inlet branch line; 1083 — second water inlet branch line; 1084 — first nozzle; 1085 — a gas inlet main pipe; 1086 — first inlet branch line; 1087 — second inlet branch line; 1088 — second nozzle; 109 — target slide; 110 — target rack; 111 — target gear; 112 — target drive; 113-a water supply pipeline; 114 — a first valve; 115-water hose; 116-a gas supply line; 117 — a second valve; 118-gas hose; 119-a water pump; 120-pressure detecting means.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As described in the background of the present application, an air-cooled surface heat exchanger (ACC) is a common air-cooling device for power stations in water-deficient areas, where a large amount of fouling is deposited on the heat transfer surfaces due to prolonged exposure to the environment. The deposited fouling is often a poor thermal conductor, resulting in a reduced cooling capacity of the heat exchanger, which in turn leads to increased back pressure, resulting in increased power loss and reduced unit thermal efficiency. Therefore, in order to ensure the heat exchange capability of the air-cooled surface heat exchanger, the heat exchange surface thereof needs to be cleaned. At present, the heat exchange surface of the air-cooled surface heat exchanger is usually cleaned in a manual cleaning mode, the flushing equipment needs to be pushed manually, and the labor intensity of operators is high. In addition, the temperature of the air-cooled surface heat exchanger can reach as high as 70 ℃ in the high-temperature period in summer, and the working environment is severe.

To this end, the embodiment of the present application provides an air-cooled surface heat exchanger cleaning system 10, which can be used to solve the technical problem that the labor intensity of an operator is high when cleaning the heat exchange surface of an air-cooled surface heat exchanger in a manual cleaning manner at present. As shown in fig. 2, the air-cooled surface heat exchanger cleaning system 10 includes a heat exchanger 101, a first slide rail 102, a second slide rail 103, a first rack 104, an escalator 105, a first gear 106, a first drive 107, a spray head device 108, a target slide rail 109, a target rack 110, a target gear 111, and a target drive 112; the first slide rail 102, the second slide rail 103 and the first rack 104 are arranged on the heat exchanger 101 in parallel; the escalator 105 is provided with a first end and a second end, the first end of the escalator 105 is clamped on the first sliding rail 102, and the second end of the escalator 105 is clamped on the second sliding rail 103; the first gear 106 is connected with the escalator 105, the first gear 106 is meshed with the first rack 104, and the first driving device 107 is connected with the first gear 106; the target slide rail 109 and the target rack 110 are arranged on the escalator 105 in parallel, the spray head device 108 is provided with a connecting part, the connecting part is clamped on the target slide rail 109, the target gear 111 is connected with the spray head device 108, the target gear 111 is meshed with the target rack 110, and the target driving device 112 is connected with the target gear 111.

Wherein the air cooled surface heat exchanger cleaning system 10 may be used to clean an air cooled surface heat exchanger. The heat exchanger 101 may be an air-cooled surface heat exchanger (also referred to as a direct air-cooled surface heat exchanger). In practical applications, a plurality of heat exchange surfaces C may be arranged on the heat exchanger 101, as shown in fig. 1, the heat exchanger 101 has a surface a and a surface B which are symmetrical, 7 heat exchange surfaces C (only three are shown in the drawing) are arranged on the surface a, each heat exchange surface is formed by a heat exchange tube bundle, the heat exchange tube bundle is formed by a plurality of parallel heat exchange tubes (not shown in the drawing), and each heat exchange tube extends from the top end to the bottom end of the heat exchanger 101. The structure of the surface B and the structure of the surface A are mutually symmetrical, and the surface A can be referred to.

The first slide rail 102 and the second slide rail 103 are arranged on the heat exchanger 101 in parallel, specifically, the first slide rail 102 is arranged at the top end of the heat exchanger 101, and the second slide rail 103 is arranged at the top end of the heat exchanger 101. More specifically, the first slide rail 102 may be disposed at a top end of one of the heat exchange surfaces C of the heat exchanger 101, and the second slide rail 103 may be disposed at a bottom end of the heat exchange surface C.

The first rack 104 may be disposed at the top or bottom end of the heat exchanger 101. In particular, it can be arranged at the top or bottom of the heat exchange surface C.

The stairs 105 may be longitudinally disposed and the first end thereof may be the top end of the stairs 105 and the second end thereof may be the bottom end of the stairs 105. The first end of the escalator 105 is clamped on the first sliding rail 102, and the second end of the escalator 105 is clamped on the second sliding rail 103, so that the first sliding rail 102 and the second sliding rail 103 can be used for fixing the escalator 105 on the heat exchanger 101 and providing a corresponding track for the movement of the escalator 105. The first end of the escalator 105 is clamped on the first sliding rail 102, and the clamped portion can be as shown in fig. 3, and the second end of the escalator 105 is clamped on the second sliding rail 103, or refer to the structure in which the first end of the escalator 105 is clamped on the first sliding rail 102, which is not described herein again.

A first gear 106 is connected with the escalator 105, the first gear 106 is meshed with the first rack 104, and a first driving device 107 is connected with the first gear 106; the first driving device 107 can be used for driving the first gear 106 to rotate, the first gear 106 moves on the first rack 104, and then the escalator 105 is driven to translate along the first sliding rail 102 and the second sliding rail 103, and the corresponding structure is shown in fig. 3. Wherein the first driving device 107 may be a motor.

The target slide rail 109 and the target rack 110 are disposed in parallel on the escalator 105, and may be disposed longitudinally, i.e., along a first end toward a second end of the escalator 105. The connection portion of the nozzle device 108 is clamped on the target slide rail 109, and may be used to fix the nozzle device 108 on the escalator 105, and may also be used to provide a corresponding track for the movement of the nozzle device 108, and the corresponding structure may be as shown in fig. 4. The nozzle assembly 108 may be configured to spray a cleaning fluid, such as water, air, etc., onto the heated surface. The attachment of the spray head device 108 may be referred to as a walking frame.

The target gear 111 is connected with the spray head device 108, the target gear 111 is meshed with the target rack 110, and the target driving device 112 is connected with the target gear 111; the target driving device 112 may be configured to drive the target gear 111 to rotate, and the target gear 111 moves on the target rack 110, so as to drive the nozzle device 108 to move along the target sliding rail 109.

It can be appreciated that with the air-cooled surface heat exchanger cleaning system 10 provided in the embodiments of the present application, in the system, the first slide rail 102, the second slide rail 103 and the first rack 104 are disposed in parallel on the heat exchanger 101; the first end of the escalator 105 is clamped on the first sliding rail 102, and the second end of the escalator 105 is clamped on the second sliding rail 103; a first gear 106 is connected with the escalator 105, the first gear 106 is meshed with the first rack 104, and a first driving device 107 is connected with the first gear 106; the target sliding rail 109 and the target rack 110 are arranged on the escalator 105 in parallel, the connecting part of the spray head device 108 is clamped on the target sliding rail 109, the target gear 111 is connected with the spray head device 108, the target gear 111 is meshed with the target rack 110, and the target driving device 112 is connected with the target gear 111; when the heat exchanger 101 is cleaned, the first driving device 107 and the target driving device 112 are controlled to be opened, the escalator 105 can transversely translate along the first sliding rail 102 and the second sliding rail 103, the sprayer device 108 can longitudinally move along the escalator 105, and then the heat exchanger 101 is automatically cleaned, so that the situation that the flushing equipment is manually pushed can be avoided, the labor intensity is greatly reduced, and the situation that an operator cleans the heat exchanger in a severe working environment can also be avoided.

In one embodiment, the system 10 further includes a water supply line 113, and the spray head device 108 includes a water spray assembly, wherein the water spray assembly includes a water inlet main line 1081, a first water inlet branch line 1082, a second water inlet branch line 1083, and a plurality of first nozzles 1084; the water supply pipeline 113 is arranged on the escalator 105, an outlet of the water supply pipeline 113 is communicated with an inlet of the water inlet main pipeline 1081, and an inlet of the first water inlet branch pipeline 1082 and an inlet of the second water inlet branch pipeline 1083 are both communicated with an outlet of the water inlet main pipeline 1081; a part of the first nozzles 1084 of the plurality of first nozzles 1084 is disposed on the first water inlet branch pipe 1082, and another part of the first nozzles 1084 of the plurality of first nozzles 1084 is disposed on the second water inlet branch pipe 1083. The first nozzles 1084 of the respective inlet branch lines may be disposed at equal intervals.

The water supply pipeline 113 is disposed on the escalator 105, a part of the water supply pipeline 113 may be fixedly disposed on the escalator 105, and another part of the water supply pipeline 113 is not fixed, as shown in fig. 5, the unfixed part adopts a drag chain manner, so that smooth translation of the escalator 105 can be ensured. The outlet end of the water delivery line 113 may be disposed on the escalator 105, the air-cooled surface heat exchanger cleaning system 10 of the present embodiment may further include a water supply device that may be in communication with the inlet of the water delivery line 113 and that is configured to provide a water source for the water spray assembly, and a first valve 114 disposed on the water delivery line 113, where the first valve 114 may be a solenoid valve.

The water spray assembly may be configured as shown in fig. 6, wherein the water delivered from the water delivery pipe 113 may be distributed into the first water inlet branch pipe 1082 and the second water inlet branch pipe 1083 through the water inlet main pipe 1081, and further sprayed out by the first nozzles 1084 disposed on the first water inlet branch pipe 1082 and the second water inlet branch pipe 1083, so as to perform water cleaning on the heated surface. To avoid water leakage, the inlet end of the main water inlet pipe 1081 may be a rotary seal.

Further, in one embodiment, the air-cooled surface heat exchanger cleaning system 10 provided in the embodiment of the present application further includes a water hose 115; the outlet of the water supply line 113 is connected to the inlet of the water inlet main line 1081 via the water supply hose 115.

For convenience of description, as shown in fig. 5, the outlet of the water supply pipeline 113 is connected to the nozzle device 108 through the water hose 115, the structure of the nozzle device 108 can be referred to in fig. 6, and the structure of the corresponding connecting part of the nozzle device 108 can be referred to in other figures, which are not described herein again. At this time, the outlet end of the water delivery pipe 113 may be fixedly disposed on the escalator 105, for example, at the middle portion of the escalator 105. The water hose 115 may specifically be a high pressure water hose 115.

It can be understood that, the inlet of the water inlet main pipe 1081 of the nozzle device 108 is communicated with the outlet of the water delivery pipe 113 through the water delivery hose 115, so that the nozzle device 108 can be ensured to move longitudinally along the escalator 105 smoothly while water is supplied to the nozzle device 108, and the nozzle device 108 can move stably and has reduced resistance when working.

In one embodiment, the system 10 further comprises a supply air line 116, the spray head device 108 further comprises a spray assembly, and the spray assembly comprises an inlet main line 1085, a first inlet branch line 1086, a second inlet branch line 1087, and a plurality of second nozzles 1088; the air supply pipeline 116 is arranged on the escalator 105, an outlet of the air supply pipeline 116 is communicated with an inlet of the air inlet main pipeline 1085, and an inlet of the first air inlet branch pipeline 1086 and an inlet of the second air inlet branch pipeline 1087 are both communicated with an outlet of the air inlet main pipeline 1085; a portion of the second nozzles 1088 of the plurality of second nozzles 1088 are disposed on the first intake branch line 1086, and another portion of the second nozzles 1088 of the plurality of second nozzles 1088 are disposed on the second intake branch line 1087. The second nozzles 1088 of the respective inlet branch pipes may be disposed at equal intervals.

The air supply pipeline 116 is disposed on the escalator 105, a part of the air supply pipeline 116 may be fixedly disposed on the escalator 105, and another part of the air supply pipeline 116 is not fixed, as shown in fig. 5, the unfixed part adopts a drag chain manner, so that smooth translation of the escalator 105 can be ensured. The outlet end of the air supply line 116 may be disposed on the escalator 105, and the air-cooled surface heat exchanger cleaning system 10 according to the embodiment of the present application may further include a compressed air storage device that may be communicated with the inlet of the air supply line 116, and a second valve 117 disposed on the air supply line 116, wherein the second valve 117 may be a solenoid valve. System 10 may further include an air compressor connected to a compressed air storage device, the air compressor and the compressed air storage device being configured to provide a compressed air source for the jet air.

The water spray assembly may be configured as shown in fig. 6, and the compressed air delivered from the air delivery pipe 116 may be distributed into the first air inlet branch pipe 1086 and the second air inlet branch pipe 1087 through the air inlet main pipe 1085, and further ejected from the second nozzles 1088 disposed on the first air inlet branch pipe 1086 and the second air inlet branch pipe 1087, so as to perform gas cleaning on the heated surface. To avoid gas leakage, the inlet end of the inlet manifold 1085 may be configured as a rotary seal.

As shown in fig. 6, the pipeline corresponding to the water spray assembly and the pipeline corresponding to the air spray assembly in the nozzle assembly are independent of each other, but the water spray assembly and the air spray assembly may be stacked on each other and fixed together, and the water spray assembly and the air spray assembly may be fixed together by welding or by using a fixing member to bind the water spray assembly and the air spray assembly together.

It can be understood that through the scheme, not only can carry out water washing to the heat transfer face, can also carry out gaseous washing to the heat transfer face, can further satisfy the heat transfer face and wash the demand.

Further, in one embodiment, the air-cooled surface heat exchanger cleaning system 10 provided in the embodiments of the present application further includes a gas hose 118; the outlet of the air supply pipeline 116 is communicated with the inlet of the air inlet main pipeline 1085 through the air conveying pipeline.

For convenience of description, as shown in fig. 5, the outlet of the air supply pipeline 116 is connected to the nozzle device 108 through an air supply hose 118, the structure of the nozzle device 108 can be referred to in fig. 6, and the structure of the corresponding connecting parts of the nozzle device 108 can be referred to in other figures, which are not described herein again. At this time, the outlet end of the air feeding duct 116 may be fixedly provided on the escalator 105, for example, at the middle portion of the escalator 105. The gas hose 118 may specifically be a high pressure gas hose 118.

It can be understood that, by communicating the inlet of the air inlet main pipe 1085 of the nozzle device 108 with the outlet of the air supply pipe 116 through the air hose 118, the nozzle device 108 can be ensured to move along the longitudinal direction of the escalator 105 smoothly while supplying air to the nozzle device 108, so that the nozzle device 108 operates stably and the resistance is reduced.

To further improve the cleaning efficiency, the air-cooled surface heat exchanger cleaning system 10 provided in the embodiment of the present application may include two spray head devices 108 as described above, and the two spray head devices 108 are respectively disposed on both sides of the escalator 105. The structure of the other spraying head device and the principle of longitudinal movement on the escalator 105 can be referred to the spraying head device 108, and are not described in detail herein.

To further achieve the automatic cleaning of the heat exchange surface, in one embodiment, the cleaning system 10 of the air-cooled surface heat exchanger provided in the embodiment of the present application further includes a control unit (not shown in the figure); the control unit is connected to the first actuator 107, the target actuator 112, the first valve 114 and the second valve 117.

It will be appreciated that with the above arrangement, the control unit is provided and connected to the first actuator 107, the target actuator 112, the first valve 114 and the second valve 117. When the heat exchange surface needs to be cleaned, the control unit can control the first driving device 107, the target driving device 112, the first valve 114 and the second valve 117, so as to complete the automatic cleaning of the heat exchange surface. The control unit can also be arranged in a control room far away from the site, so that remote control cleaning can be realized. In practical application, a camera monitoring device can be further installed on a cleaning site to monitor the cleaning condition.

To further satisfy the cleaning requirement, in one embodiment, the cleaning system 10 of the air-cooled surface heat exchanger according to the embodiment of the present application further includes a water pump 119, an inverter device and a pressure detection device 120, as shown in fig. 5 (the inverter device is not shown), the water pump 119 and the pressure detection device 120 are disposed on the water supply pipeline 113, and the inverter device is connected to the water pump 119.

It can be understood that, by adopting the above scheme, the water pump 119 and the pressure detection device 120 are arranged on the water supply pipeline 113, and the water pump 119 can be adjusted by the frequency conversion device based on the water pressure detected by the pressure detection device 120, so that the water pressure is appropriate and the cleaning requirement is met; avoid too big pipeline damage that leads to of water pressure to and avoid water pressure undersize, the cleaning performance is poor. The control unit can be connected with the pressure detection device 120 and the frequency conversion device, acquire the water pressure detected by the pressure detection device 120, judge the water pressure, and issue a corresponding control instruction to the frequency conversion device according to the judgment result. That is, the control unit may include a logic operation module to perform the above determination process.

The water supply pipe 113 may further be provided with a flow rate detector for monitoring the amount of water used.

It should be noted that the above may be related to the arrangement on one heat exchange surface, and when there are a plurality of heat exchange surfaces on the heat exchanger 101, the same arrangement may be adopted on the plurality of heat exchange surfaces. For example, when there are 14 heat exchange surfaces on the a surface and the B surface of the heat exchanger 101, the fourteen heat exchange surfaces may be provided with corresponding devices such as a first slide rail 102, a second slide rail 103, a first rack 104, an escalator 105, a first gear 106, a first driving device 107, a spray head device 108, a target slide rail 109, a target rack 110, a target gear 111, a target driving device 112, a first valve 114, and a second valve 117. The cleaning systems on the 14 heat exchange surfaces can share the same water supply device, the compressed air storage device, the air compressor, the control unit and the like. One control unit can control the cleaning systems on all the heat exchange surfaces on the heat exchanger 101, and by controlling various valves and various driving devices, simultaneous cleaning, surface-by-surface cleaning of all the heat exchange surfaces, independent key cleaning of a certain heat exchange surface and the like can be realized.

In practical applications, the air-cooled surface heat exchanger cleaning system 10 provided in the embodiment of the present application may further include an ambient temperature detection device, and the control unit is connected to the ambient temperature detection device.

The ambient temperature detection temperature can be used to detect the ambient temperature of the site where the heat exchanger 101 is located. When cleaning, the control unit can judge whether to carry out water cleaning or air cleaning according to the ambient temperature who acquires, and then control the valve that corresponds and open. If the current ambient temperature is low, icing may occur if the water is used for flushing, and the second valve 117 on the air supply pipe 116 may be controlled to be opened, and the first valve 114 on the water supply pipe 113 may be controlled to be closed, so as to flush the heat exchange surface with the compressed air.

Based on the air-cooled surface heat exchanger cleaning system 10 provided in the above embodiment of the present application, the embodiment of the present application further provides a method for cleaning by using the air-cooled surface heat exchanger cleaning system 10, as shown in fig. 7, the method for cleaning an air-cooled surface heat exchanger includes the following steps, which are executed cyclically and alternately, until the cleaning of the heat exchange surface to be cleaned is completed:

and 202, controlling the spray head device to move along the escalator to carry out longitudinal cleaning.

When the heat exchange surface to be cleaned is cleaned, the control unit may control the first valve 114 or the second valve 117 to be opened, and water cleaning or compressed air cleaning is performed. The control unit can also control the target drive device 112 to be turned on, thereby driving the nozzle device 108 to move along the escalator 105 for longitudinal cleaning.

And step 203, controlling the escalator to transversely move to the next cleaning station.

After the area corresponding to the longitudinal movement of the nozzle device 108 is cleaned, the control unit can control the first driving device 107 to be turned on, so that the escalator 105 moves transversely to the next cleaning station.

In practical application, distance sensors can be arranged on the escalator 105, the spray head device 108 and the heat exchange surface, and whether longitudinal cleaning is finished, whether the escalator 105 moves to the next station, whether the cleaning of the whole heating surface is finished and the like are judged according to data collected by the distance sensors. For example, the heated surface may be regarded as a rectangle, and it is determined that the nozzle assembly 108 has been displaced from one vertex of the rectangle to another vertex by the distance sensor, and the two vertices are on the same diagonal, so that the heated surface is completely cleaned.

Here, it can be considered that the cartesian robot concept is applied to the cleaning system, each heat exchange surface is a rectangular plane, and is a horizontal X-axis and a vertical Y-axis, since the nozzle device 108 can freely move horizontally and vertically on the rectangular plane, so that precise positioning and important washing can be realized in the rectangular plane.

It can be understood that, with the cleaning method of the air-cooled surface heat exchanger according to the above-mentioned embodiment of the present application, based on the cleaning system 10 of the air-cooled surface heat exchanger according to the above-mentioned embodiment of the present application, when the heat exchanger 101 is cleaned, by controlling the first driving device 107 and the target driving device 112 to be opened, the escalator 105 can be moved horizontally along the first sliding rail 102 and the second sliding rail 103, and the shower head device 108 can be moved longitudinally along the escalator 105, so as to complete the automatic cleaning of the heat exchanger 101, thereby avoiding manual pushing of the flushing device, and greatly reducing labor intensity.

To further satisfy the cleaning requirement, in one embodiment, before the step 202 of controlling the nozzle device 108 to move along the escalator 105 for longitudinal cleaning, the method for cleaning the air-cooled surface heat exchanger provided by the embodiment of the present application further includes the step 201: the ambient temperature is obtained, and the first valve 114 is controlled to open or the second valve 117 is controlled to open according to the ambient temperature, as shown in fig. 8.

If the ambient temperature is a first preset temperature, controlling the first valve 114 to open; and if the ambient temperature is the second preset temperature, controlling the second valve 117 to open.

The ambient temperature may be the ambient temperature of the site where the heat exchanger 101 is located, which is acquired by the control unit from the ambient temperature detection device.

The first preset temperature and the first preset temperature can be set according to actual needs. For example, the first preset temperature is above 10 ℃, and the second preset temperature is less than 10 ℃.

Then, when the ambient temperature is above 10 ℃, it may be judged that water flushing is performed, and the first valve 114 may be controlled to be opened and the second valve 117 may be controlled to be closed. When the ambient temperature is less than 10 ℃, the heat exchange surface is cleaned by water, and there is a risk of icing, so that the compressed air cleaning can be judged to be performed, and the second valve 117 can be controlled to be opened, and the first valve 114 can be controlled to be closed.

It can be understood that, adopt above-mentioned scheme, can adopt the water washing according to the ambient temperature condition, summer high temperature period, winter low temperature period adopts compressed air to sweep to the washing demand that can adapt to reality more.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An air-cooled surface type heat exchanger cleaning system is characterized by comprising a heat exchanger, a first slide rail, a second slide rail, a first rack, an escalator, a first gear, a first driving device, a spray head device, a target slide rail, a target rack, a target gear and a target driving device;

2. An air-cooled surface heat exchanger cleaning system according to claim 1, characterised in that the system further comprises water supply lines, the spray head means comprising a water spray assembly comprising a water inlet manifold, a first water inlet branch line, a second water inlet branch line and a plurality of first nozzles;

3. An air-cooled surface heat exchanger cleaning system according to claim 2, characterised in that the system further comprises a water hose;

4. The air-cooled surface heat exchanger cleaning system according to claim 2, further comprising a supply air line, wherein the spray head arrangement further comprises a spray assembly comprising a main air inlet line, a first branch air inlet line, a second branch air inlet line, and a plurality of second nozzles;

5. An air-cooled surface heat exchanger cleaning system according to claim 4, characterised in that the system further comprises a gas hose;

6. An air-cooled surface heat exchanger cleaning system according to claim 2, characterised in that the system further comprises a water pump, frequency conversion means and pressure detection means;

7. An air-cooled surface heat exchanger cleaning system according to claim 5, characterised in that the system further comprises a water supply, a first valve, a compressed air storage and a second valve;

8. An air-cooled surface heat exchanger cleaning system according to claim 5, characterised in that the system further comprises a control unit and an ambient temperature detection device, the control unit being connected to the first drive means, the target drive means, the first valve, the second valve and the ambient temperature detection device.

9. A method of cleaning with an air-cooled surface heat exchanger cleaning system according to claim 8, characterized in that the method comprises:

controlling the escalator to move transversely to the next cleaning station;

10. A method of cleaning with an air-cooled surface heat exchanger cleaning system according to claim 9, characterized in that before the control spray device is moved along the stairs for longitudinal cleaning, the method comprises: