Cleaning device and cleaning method for locomotive composite cooler

Abstract

The invention discloses a cleaning device for a locomotive compound cooler, which comprises a storage box, a cleaning device and a cleaning device, a filter; a control pump; a forward cleaning circuit; a reverse cleaning loop; wherein the control pump is used for controlling the cleaning liquid to flow into a first opening of the composite cooler through the forward cleaning loop and flow out of a second opening of the composite cooler, and controlling the cleaning liquid flowing out of the second opening to flow into the filter through the forward cleaning loop and then return to the storage box; or the control pump is further used for controlling the cleaning liquid to flow into the second opening of the composite cooler through the reverse cleaning loop and flow out of the first opening of the composite cooler, and controlling the cleaning liquid flowing out of the first opening to flow into the filter through the reverse cleaning loop and then return to the storage box. The invention further discloses a cleaning method. According to the scheme provided by the invention, the composite cooler can be quickly cleaned on the premise that the top cover is not disassembled and the cooler is not replaced.

Description

Technical Field

[0001] The invention relates to the field of rail locomotives, and in particular to a cleaning device and a cleaning method for a locomotive composite cooler. Background Art

[0002] The main high-power components of electric locomotives are traction transformers and traction converters, which generate a lot of heat during normal operation of the locomotive. Therefore, the locomotive is also equipped with a composite cooler to dissipate heat for the two. Figure 1 As shown in the figure, the composite cooler contains three basic structures, namely: transformer oil circulation circuit, converter water circulation circuit, and heat sink fins. The basic working principle is that the transformer and converter are connected to the oil and water circuits of the composite cooler through pipelines, and the liquid is circulated continuously with the help of oil pumps and water pumps, and the heat is transferred to the heat sink fins, and the heat is taken away by the fan on the composite cooler to achieve the cooling effect.

[0003] In order to achieve the effect of sufficient cooling of oil and water, the cooler is designed with countless "bow" shaped oil circuits. The expansion length of the oil circuit is very long, which is not conducive to the outflow of foreign matter. When welding beans and slag are left inside the composite cooler during the manufacturing and assembly welding process, or the transformer produces a large amount of carbide and copper and iron filings due to its own failure, and the oil pump is not shut down immediately, these fault products will flow into the oil cooler with the oil flow, thereby contaminating the oil cooler.

[0004] Since the composite cooler is located in the machinery room of the electric locomotive, if it is to be replaced, in addition to removing the cables and pipelines, the locomotive roof at that location also needs to be removed. Removing the roof also requires removing the roof equipment and related lines. The operation process is complicated, the requirements for on-site operation conditions are extremely high, and the operation time is long. At the same time, the oil circuit in the composite cooler is in the shape of countless "bows". Once the products of transformer failure enter the oil circuit, most impurities will be stuck in the "bow"-shaped oil channel. The consequence is that after the new transformer is replaced and put into operation, the impurities in the oil channel have the opportunity to re-enter the new transformer with the oil flow, which can easily cause a major accident such as transformer short circuit and burning and locomotive shutdown.

[0005] Therefore, a cleaning solution for a locomotive composite cooler is urgently needed. Summary of the invention

[0006] In view of this, in order to overcome at least one aspect of the above problems, an embodiment of the present invention provides a cleaning device for a locomotive composite cooler, comprising the following: A storage box storing cleaning fluid; Filters; Control pumps; A forward cleaning circuit, the forward cleaning circuit connecting the storage tank, the control pump, the compound cooler, and the filter; A reverse cleaning circuit, wherein the forward cleaning circuit is connected to the storage tank, the control pump, the compound cooler, and the filter; Wherein, the control pump is used to control the cleaning liquid to flow into the first opening of the compound cooler through the forward cleaning circuit and flow out from the second opening of the compound cooler, and to control the cleaning liquid flowing out from the second opening to flow into the filter through the forward cleaning circuit and then return to the storage tank; or, the control pump is also used to control the cleaning liquid to flow into the second opening of the compound cooler through the reverse cleaning circuit and flow out from the first opening of the compound cooler, and to control the cleaning liquid flowing out from the first opening to flow into the filter through the reverse cleaning circuit and then return to the storage tank.

[0007] In some embodiments, the forward cleaning circuit includes a first solenoid valve and a second solenoid valve; Among them, one end of the first solenoid valve is connected to the outlet of the control pump, and the other end is connected to the first opening, and the inlet of the control pump is connected to the storage box; one end of the second solenoid valve is connected to the inlet of the filter, and the other end is connected to the second opening, and the outlet of the filter is connected to the storage box.

[0008] In some embodiments, the reverse cleaning circuit includes a third solenoid valve and a fourth solenoid valve; Wherein, a connection point of one end of the third solenoid valve is arranged between the other end of the second solenoid valve and the inlet of the filter, and a connection point of the other end is arranged between the other end of the first solenoid valve and the first opening; A connection point at one end of the fourth solenoid valve is arranged between one end of the first solenoid valve and the outlet of the control pump, and a connection point at the other end is arranged between one end of the second solenoid valve and the second opening.

[0009] In some embodiments, the filter includes a primary filter and a secondary filter.

[0010] In some embodiments, the cleaning device further comprises a vibration source for vibrating the composite cooler.

[0011] In some embodiments, the vibration source includes a vibration controller and two vibration generators, and the vibration generators are fixed on two symmetrical sides of the composite cooler.

[0012] In some embodiments, the cleaning solution is an oily cleaning agent.

[0013] Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention further provides a method for cleaning a composite cooler of a locomotive, wherein the cleaning device according to any one of the above embodiments performs the following steps: The composite cooler is forward cleaned by using the forward cleaning circuit for a preset time; Reverse cleaning the composite cooler using the reverse cleaning circuit for a preset time; The forward cleaning and reverse cleaning are performed cyclically, wherein the number of cycles is a first preset number of times.

[0014] In some embodiments, it also includes: The cleaning liquid is heated, and forward cleaning and reverse cleaning are performed using the heated cleaning liquid.

[0015] In some embodiments, it also includes: Replacing the filter screen of the filter and performing a second stage of cyclic filtration, wherein in the second stage of filtration, the number of cyclic forward cleaning and reverse cleaning is a second preset number, and the second preset number is less than the first preset number; Determining whether there is precipitate in the filter; If precipitates are present, the forward cleaning and reverse cleaning are continued to be cycled, wherein the number of cycles is a first preset number of times.

[0016] The present invention has one of the following beneficial technical effects: the solution proposed by the present invention can quickly clean the composite cooler without removing the top cover or replacing the cooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the internal structure of the locomotive composite cooler; Figure 2 A schematic structural diagram of a cleaning device for a locomotive composite cooler provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0020] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0021] According to one aspect of the present invention, an embodiment of the present invention provides a cleaning device for a locomotive composite cooler, such as Figure 2 As shown, it may include: A storage box storing cleaning fluid; Filters; Control pumps; A forward cleaning circuit, the forward cleaning circuit connecting the storage tank, the control pump, the compound cooler, and the filter; A reverse cleaning circuit, wherein the forward cleaning circuit is connected to the storage tank, the control pump, the compound cooler, and the filter; Wherein, the control pump is used to control the cleaning liquid to flow into the first opening of the compound cooler through the forward cleaning circuit and flow out from the second opening of the compound cooler, and to control the cleaning liquid flowing out from the second opening to flow into the filter through the forward cleaning circuit and then return to the storage tank; or, the control pump is also used to control the cleaning liquid to flow into the second opening of the compound cooler through the reverse cleaning circuit and flow out from the first opening of the compound cooler, and to control the cleaning liquid flowing out from the first opening to flow into the filter through the reverse cleaning circuit and then return to the storage tank.

[0022] The solution proposed by the present invention can quickly clean the composite cooler without removing the top cover or replacing the cooler.

[0023] In some embodiments, the forward cleaning circuit includes a first solenoid valve and a second solenoid valve; Among them, one end of the first solenoid valve is connected to the outlet of the control pump, and the other end is connected to the first opening, and the inlet of the control pump is connected to the storage box; one end of the second solenoid valve is connected to the inlet of the filter, and the other end is connected to the second opening, and the outlet of the filter is connected to the storage box.

[0024] Specifically, Figure 2 As shown, the forward cleaning circuit is controlled by solenoid valve 1 (first solenoid valve) and solenoid valve 2 (second solenoid valve) to open and close. When solenoid valves 1 and 2 are closed, solenoid valves 3 and 4 are disconnected. Under the action of the control pump, the cleaning liquid flows out of the storage tank, passes through solenoid valve 1 and opening 1 of the compound cooler, enters the inside of the compound cooler, and then flows out from opening 2 of the compound cooler, passes through solenoid valve 2, enters the filter for filtration, and returns to the storage tank.

[0025] In some embodiments, the reverse cleaning circuit includes a third solenoid valve and a fourth solenoid valve; Wherein, a connection point of one end of the third solenoid valve is arranged between the other end of the second solenoid valve and the inlet of the filter, and a connection point of the other end is arranged between the other end of the first solenoid valve and the first opening; A connection point at one end of the fourth solenoid valve is arranged between one end of the first solenoid valve and the outlet of the control pump, and a connection point at the other end is arranged between one end of the second solenoid valve and the second opening.

[0026] Specifically, Figure 2 As shown, the reverse cleaning circuit is opened and closed by solenoid valve 3 (first solenoid valve) and solenoid valve 4 (second solenoid valve). When solenoid valves 3 and 4 are closed, under the action of the control pump, the cleaning liquid passes through the solenoid valve 4 and the opening 2 of the compound cooler, enters the inside of the compound cooler, and then flows out from the opening 1 of the compound cooler, passes through the solenoid valve 3, enters the filter for filtration, and returns to the storage box.

[0027] In some embodiments, the filter includes a primary filter and a secondary filter.

[0028] Specifically, both the primary filter and the secondary filter are detachable filters, and the filter is provided with an observation window, through which it can be determined whether the primary filter and the secondary filter need to be cleaned.

[0029] In some embodiments, the cleaning device further comprises a vibration source for vibrating the composite cooler.

[0030] In some embodiments, the vibration source includes a vibration controller and two vibration generators, and the vibration generators are fixed on two symmetrical sides of the composite cooler.

[0031] Specifically, Figure 2 As shown, the vibration source may include a vibration controller and two vibration generators. The vibration controller is used to control the vibration frequency and vibration interval. The vibration generators are fixed on both sides of the composite cooler. The vibration frequency can be set at 40HZ~50HZ, 10HZ~16HZ, and the excitation force is 3kgf. By using high-frequency vibration, the transformer fault can be better separated out in the internal "bow" oil circuit. In some embodiments, the cleaning solution is an oily cleaning agent.

[0032] Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention further provides a method for cleaning a composite cooler of a locomotive, wherein the cleaning device according to any one of the above embodiments performs the following steps: The composite cooler is forward cleaned by using the forward cleaning circuit for a preset time; Reverse cleaning the composite cooler using the reverse cleaning circuit for a preset time; The forward cleaning and reverse cleaning are performed cyclically, wherein the number of cycles is a first preset number of times.

[0033] In some embodiments, it also includes: The cleaning liquid is heated, and forward cleaning and reverse cleaning are performed using the heated cleaning liquid.

[0034] In some embodiments, it also includes: Replacing the filter screen of the filter and performing a second stage of cyclic filtration, wherein in the second stage of filtration, the number of cyclic forward cleaning and reverse cleaning is a second preset number, and the second preset number is less than the first preset number; Determining whether there is precipitate in the filter; If precipitates are present, the forward cleaning and reverse cleaning are continued to be cycled, wherein the number of cycles is a first preset number of times.

[0035] Specifically, when cleaning the composite cooler, firstly, the connecting pipeline between the composite cooler and the transformer is removed, and the pipeline of the filter device is connected thereto.

[0036] Then the vibration generators were arranged symmetrically on both sides of the composite cooler, and the vibration frequencies were set to 40 Hz and 10 Hz respectively. The circulating oil temperature was heated to 55°C, the forward and reverse cycle time was set to 15 minutes, and the forward and reverse switching times were set to 4.

[0037] Then proceed with the first stage of filtration. Start the first stage of filtration according to the parameters set above. After completing a cycle of 15 minutes each time and switching 4 times, remove the first-level filter for cleaning and replace the second-level filter element.

[0038] Finally, the second stage of filtration is carried out with vibration frequencies of 40HZ and 10HZ respectively, the circulating oil temperature is heated to 55℃, and the forward and reverse cycles are repeated twice. The time is set to 15min for filtration and cleaning. After the time is up, the status of the first and second level filter elements is observed through the observation window. If there is no precipitate, the cleaning process is completed. If precipitate is visible to the naked eye, the filtration at this stage is converted to the first stage filtration, and after completion, the second stage filtration is carried out again.

[0039] The solution proposed by the present invention can quickly clean the composite cooler without removing the top cover or replacing the cooler, which improves the efficiency of replacing the composite cooler, saves the cost of replacing the composite cooler, and reduces the possibility of secondary pollution of the transformer and causing failure due to the composite cooler.

[0040] The above are exemplary embodiments disclosed in the present invention, but it should be noted that various changes and modifications may be made without departing from the scope disclosed in the embodiments of the present invention as defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0041] It should be understood that, as used herein, the singular forms "a", "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations including one or more of the associated listed items.

[0042] The serial numbers of the embodiments disclosed in the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0043] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0044] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A cleaning device for a locomotive composite cooler, characterized in that: include: A storage box storing cleaning fluid; Filters; Control pumps; A forward cleaning circuit, the forward cleaning circuit connecting the storage tank, the control pump, the compound cooler, and the filter; A reverse cleaning circuit, wherein the forward cleaning circuit is connected to the storage tank, the control pump, the compound cooler, and the filter; Wherein, the control pump is used to control the cleaning liquid to flow into the first opening of the compound cooler through the forward cleaning circuit and flow out from the second opening of the compound cooler, and to control the cleaning liquid flowing out from the second opening to flow into the filter through the forward cleaning circuit and then return to the storage tank; or, the control pump is also used to control the cleaning liquid to flow into the second opening of the compound cooler through the reverse cleaning circuit and flow out from the first opening of the compound cooler, and to control the cleaning liquid flowing out from the first opening to flow into the filter through the reverse cleaning circuit and then return to the storage tank.

2. The cleaning device according to claim 1, characterized in that: The forward cleaning circuit includes a first solenoid valve and a second solenoid valve; Among them, one end of the first solenoid valve is connected to the outlet of the control pump, and the other end is connected to the first opening, and the inlet of the control pump is connected to the storage box; one end of the second solenoid valve is connected to the inlet of the filter, and the other end is connected to the second opening, and the outlet of the filter is connected to the storage box.

3. The cleaning device according to claim 2, characterized in that: The reverse cleaning circuit includes a third solenoid valve and a fourth solenoid valve; Wherein, a connection point of one end of the third solenoid valve is arranged between the other end of the second solenoid valve and the inlet of the filter, and a connection point of the other end is arranged between the other end of the first solenoid valve and the first opening; A connection point at one end of the fourth solenoid valve is arranged between one end of the first solenoid valve and the outlet of the control pump, and a connection point at the other end is arranged between one end of the second solenoid valve and the second opening.

4. The cleaning device according to claim 1, characterized in that: The filter comprises a primary filter screen and a secondary filter screen.

5. The cleaning device according to claim 1, characterized in that: The cleaning device further comprises a vibration source for vibrating the composite cooler.

6. The cleaning device according to claim 5, characterized in that: The vibration source includes a vibration controller and two vibration generators, and the vibration generators are fixed on two symmetrical sides of the composite cooler.

7. The cleaning device according to claim 1, characterized in that: The cleaning liquid is an oily cleaning agent.

8. A method for cleaning a locomotive composite cooler, characterized in that: Based on the cleaning device according to any one of claims 1 to 6, the following steps are performed: The composite cooler is forward cleaned by using the forward cleaning circuit for a preset time; Reverse cleaning the composite cooler using the reverse cleaning circuit for a preset time; The forward cleaning and reverse cleaning are performed cyclically, wherein the number of cycles is a first preset number of times.

9. The method according to claim 8, characterized in that Also includes: The cleaning liquid is heated, and forward cleaning and reverse cleaning are performed using the heated cleaning liquid.

10. The method according to claim 8, characterized in that Also includes: Replacing the filter screen of the filter and performing a second stage of cyclic filtration, wherein in the second stage of filtration, the number of cyclic forward cleaning and reverse cleaning is a second preset number, and the second preset number is less than the first preset number; Determining whether there is precipitate in the filter; If precipitates are present, the forward cleaning and reverse cleaning are continued to be cycled, wherein the number of cycles is a first preset number of times.

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