Electric locomotive compressed air quality on-line monitor

Abstract

The utility model discloses an electric locomotive compressed air quality on-line monitor which comprises an air dryer air outlet, the output end of the air dryer air outlet is connected with an air outlet pipe, the bottom of the air outlet pipe is communicated with an air pipe, and the end, away from the air outlet pipe, of the air pipe is connected with a monitoring case. A measuring device is arranged in the middle section in the monitoring case, a monitoring cylinder cabin is arranged in the measuring device, one end of the monitoring cylinder cabin is provided with an air inlet nozzle communicated with the air pipe, the other end of the monitoring cylinder cabin extends to an exhaust nozzle on the outer side of the measuring device, and a spray washing pipe is fixed to the axis in the monitoring cylinder cabin in the length direction of the monitoring cylinder cabin; cleaning liquid is injected into the spray washing pipe through the high-pressure water conveying assembly, the periphery of the inner wall of the monitoring cylinder cabin is rapidly washed in a high-pressure spray washing mode through the spray holes, so that oil stains and dirt adhering to the inner wall are removed in time, then clean water is injected into the spray washing pipe through the high-pressure water conveying assembly, and the inner wall of the cylinder cabin is secondarily washed.

Description

Technical Field

[0001] The utility model relates to the technical field of electric locomotives, in particular to an online monitoring instrument for compressed air quality of electric locomotives. Background Art

[0002] At present, electric locomotives generally use screw air compressors or reciprocating piston air compressors to provide air sources for the air pipeline system, and provide clean, dry and stable compressed air for the locomotive control system and brake system through oil-gas separators and air dryers. However, it is impossible to detect whether the oil-gas separator and air dryer are working properly, especially whether the dryer adsorbent is invalid, and whether the relative humidity of the compressed air after treatment meets the standards in real time online. During routine inspections, it was found that a large number of locomotive electric air valves and brake valves contained oil and water, which reflected that the quality of locomotive compressed air was not up to standard.

[0003] Chinese patent CN206945640U discloses an online monitor for compressed air quality in electric locomotives, which consists of six parts: a host, a measuring device, an air circuit component, a power connection, a control cable and a communication connection; the host receives the signal collected by the measuring device, .... The mechanical structure of the measuring device adopts an air circuit sealing design and contains a special monitoring air chamber; the utility model can well measure the temperature, humidity, oil and gas content and solid particle concentration in the compressed air, judge the quality of the compressed air, and prompt the locomotive maintenance and preparation personnel to promptly check the air dryer problem by recording and alarming, so as to ensure that a clean, dry and stable air source is provided for the locomotive control system and braking system.

[0004] The above-mentioned device can implement static detection with the cooperation of components such as electro-pneumatic valves, minimizing air flow loss and thus ensuring the accuracy of measurement; however, long-term air circulation and compression will cause more and more oil stains to adhere to the inner wall of the monitoring air chamber in the measuring device. The continuously accumulated oil stains will also absorb more and more particulate impurities, and the accumulation will become thicker and thicker, especially in a high-temperature air environment, which will cause oil and gas to volatilize in the air chamber, which is not conducive to the accurate detection of monitoring components, especially oil and gas sensors, and affects the overall monitoring effect of the monitor. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] Therefore, the purpose of the utility model is to provide an online monitor for compressed air quality of electric locomotives to solve the problem that the online monitor for compressed air quality of electric locomotives in the prior art proposed in the above background technology has more and more oil stains adhering to the inner wall of the monitoring air chamber in the measuring device, and the continuously accumulated oil stains will also absorb more and more particulate impurities, and the accumulation will become thicker and thicker, especially in an air environment with high temperature, which will cause oil and gas to volatilize in the air chamber, which is not conducive to the accurate detection of the monitoring components, especially the oil and gas sensors, and affects the overall monitoring effect of the monitor.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an online monitor for compressed air quality of an electric locomotive, comprising an air outlet of an air dryer, an output end of the air outlet of the air dryer is connected to an air outlet pipe, the bottom of the air outlet pipe is connected to an air pipe, one end of the air pipe away from the air outlet pipe is connected to a monitoring chassis, a measuring device is arranged in the middle section of the monitoring chassis, a monitoring cylinder cabin is arranged inside the measuring device, one end of the monitoring cylinder cabin has an air inlet nozzle connected to the air pipe and the other end extends to an exhaust nozzle outside the measuring device, a spray pipe is fixed at the axis of the monitoring cylinder cabin along its length direction, the radial circumference of the spray pipe has evenly distributed spray holes, the outside of the monitoring cylinder cabin is also provided with a high-pressure water delivery component connected to the spray pipe, and the measuring device is also provided with a plurality of sensor combination probes for different purposes.

[0008] As a preferred solution of the online monitor for compressed air quality of electric locomotive described in the utility model, the two ends of the inner side of the monitoring cylinder cabin are also provided with positioning grids for fixing the spraying pipe.

[0009] As a preferred solution of the online monitoring instrument for compressed air quality of electric locomotive described in the utility model, the high-pressure water supply assembly includes a water supply pipe connected to the spray pipe at one end, a liquid tank connected to the other end of the water supply pipe, and a pressure pump arranged on the water supply pipe.

[0010] As a preferred solution of the online compressed air quality monitor for electric locomotives described in the utility model, the monitoring chassis is also provided with a pressure reducing valve connected to the air inlet nozzle, the air inlet end of the pressure reducing valve is connected to a first electro-pneumatic valve, and the first electro-pneumatic valve is connected to the air pipe, and the outer end of the exhaust nozzle is connected to a second electro-pneumatic valve that cooperates with the first electro-pneumatic valve.

[0011] As a preferred solution of the online monitor for compressed air quality of electric locomotive described in the utility model, a muffler is also provided at the exhaust end of the second electric air valve.

[0012] As a preferred solution of the online monitoring instrument for compressed air quality of electric locomotive described in the utility model, the first electro-pneumatic valve, the second electro-pneumatic valve, the pressure reducing valve and the measuring device are connected to a control host through wire signals.

[0013] Compared with the prior art, the beneficial effect of the utility model is as follows: for this type of online monitor of compressed air quality for electric locomotives, when it is necessary to clean the inner wall of the monitoring cylinder cabin, the control host will first start the pressure reducing valve and reduce the unit inflow of air to avoid affecting the cleaning effect, and then inject cleaning liquid into the spray pipe through the high-pressure water supply component, and quickly rinse the inner wall of the monitoring cylinder cabin around by high-pressure spraying through the spray hole, so that the oil stains and dirt adhering to the inner wall are removed in time, and then clean water is injected into the spray pipe through the high-pressure water supply component, and the inner wall of the cylinder cabin is cleaned for the second time, and in the continuous flushing process, the continuously entering compressed air flow can push the sewage accumulated in the cylinder directly toward the exhaust nozzle to prevent it from affecting the cleaning. It is simple and reasonable. In this way, it can effectively prevent oil stains and dirt from adhering to the inner wall of the monitoring air chamber, which is beneficial to the accurate detection of the detection device and the sensor, and further improves the monitoring effect of the monitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall process structure of the utility model;

[0015] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the monitoring cylinder cabin of the utility model;

[0016] Figure 3 The figure is a schematic diagram of the internal structure of the monitoring nacelle from the side view of the utility model.

[0017] In the figure: 10, air dryer outlet; 101, air outlet pipe; 20, air pipe; 30, monitoring chassis; 31, measuring device; 310, monitoring cylinder cabin; 3101, air inlet nozzle; 3102, exhaust nozzle; 3103, spray pipe; 3103a, spray hole; 3104, positioning grid; 311, high-pressure water delivery component; 3111, water delivery pipe; 3112, liquid tank; 3113, booster pump; 312, sensor combination probe; 32, pressure reducing valve; 33, first electro-pneumatic valve; 34, second electro-pneumatic valve; 40, muffler; 50, control host. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0019] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0020] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Figure 1-Figure 3 The following is a schematic diagram of the overall structure of an online monitoring instrument for compressed air quality in electric locomotives according to the utility model. Figure 1-Figure 3 , an electric locomotive compressed air quality online monitor of the present embodiment comprises an air dryer outlet 10, an output end of the air dryer outlet 10 is connected to an air outlet pipe 101, the bottom of the air outlet pipe 101 is connected to an air pipe 20, one end of the air pipe 20 away from the air outlet pipe 101 is connected to a monitoring chassis 30, a measuring device 310 is arranged in the middle section of the monitoring chassis 30, a monitoring nacelle 310 is arranged inside the measuring device 310, one end of the monitoring nacelle 310 is provided with an air inlet nozzle 3101 connected to the air pipe 20 and the other end extends to an exhaust nozzle 3102 outside the measuring device 310, a spray pipe 3103 is fixed at the axis of the monitoring nacelle 310 along its length direction, the radial circumference of the spray pipe 3103 is provided with uniformly distributed spray holes 3103a, the outer side of the monitoring nacelle 310 is also provided with a high-pressure water delivery component 311 connected to the spray pipe 3103, and the measuring device 310 is also provided with a plurality of sensor combination probes 312 for different purposes.

[0022] The two ends of the inner side of the monitoring cylinder cabin 310 are also provided with positioning grids 3104 for fixing the spray pipe 3103. The two ends of the monitoring cylinder cabin 310 are fixed by setting the positioning grids 3104 without affecting the entry and circulation of air.

[0023] The high-pressure water delivery assembly 311 includes a water delivery pipe 3111 connected to the spray pipe 3103 at one end, a liquid tank 3112 connected to the other end of the water delivery pipe 3111, and a pressure pump 3113 arranged on the water delivery pipe 3111. Here, the liquid tank 3112 can be equipped with oil stain cleaning liquid and clean water, and the corresponding valves are opened and closed to facilitate the output of the pump group, so as to achieve the purpose of removing oil stains and dirt. At the same time, the spray pipe 3103 is pressurized by the pressure pump 3113 to form a high-pressure spray through the spray hole 3103a, and the flushing effect is better and more thorough.

[0024] The monitoring chassis 30 is also provided with a pressure reducing valve 32 connected to the air inlet nozzle 3101, the air inlet end of the pressure reducing valve 32 is connected to the first electro-pneumatic valve 33, and the first electro-pneumatic valve 33 is connected to the air pipe 20, and the outer end of the exhaust nozzle 3102 is connected to the second electro-pneumatic valve 34 that cooperates with the first electro-pneumatic valve 33; the exhaust end of the second electro-pneumatic valve 34 is also provided with a muffler 40, and the muffler 40 can reduce the wind noise during the air flow output; the first electro-pneumatic valve 33, the second electro-pneumatic valve 34, the pressure reducing valve 32 and the measuring device 31 are connected to the control host 50 through wire signals. In actual use, compressed air enters the monitoring chassis 30 through the air outlet pipe 101 and the air pipe 20, and then the first electro-pneumatic valve 33 and the second electro-pneumatic valve 34 are closed after the pressure is reduced by the pressure reducing valve 32, so that the monitoring cylinder cabin 310 forms a closed detection cabin. The temperature, water dew point, oil and gas content and solid particles of the compressed air in the cabin are then detected through the sensor combination probe 312. The accuracy of the measurement data can be effectively guaranteed by this static closed detection method. It should be noted that the sensor combination probe 312 here may include a temperature sensor, a humidity sensor, an air particle sensor and an oil and gas sensor. After the detection is completed, the first electro-pneumatic valve 33 and the second electro-pneumatic valve 34 are opened, and the detected air in the monitoring cylinder cabin 310 is discharged through the exhaust port of the muffler 40 through the fast-circulating compressed air, and so on, so as to monitor the next round of air. The measured value transmits the data signal to the control host 50 through the wire for analysis, processing, storage and judgment of whether the air quality exceeds the standard. If it exceeds the standard, the alarm mechanism will be activated in time.

[0025] In this embodiment, when it is necessary to clean the inner wall of the monitoring cylinder cabin 310, the control host 50 will first start the pressure reducing valve 32 and reduce the unit inflow of air to avoid affecting the cleaning effect, and then inject cleaning liquid into the spray pipe 3103 through the high-pressure water delivery component 311, and quickly rinse the inner wall of the monitoring cylinder cabin 310 around by high-pressure spraying through the spray hole 3103a, so that the oil stains and dirt adhering to the inner wall are removed in time, and then clean water is injected into the spray pipe 3103 through the high-pressure water delivery component 311, and the inner wall of the cylinder cabin is cleaned for the second time. It should be noted that during the continuous flushing process, the continuously entering compressed air flow can push the sewage accumulated in the cylinder directly toward the exhaust nozzle 3102 to prevent it from affecting the cleaning. It is simple and reasonable. In this way, it can effectively prevent the inner wall of the monitoring air chamber from adhering to oil stains and dirt, which is beneficial to the accurate detection of the detection device and the sensor, and further improves the monitoring effect of the monitor.

[0026] In summary, in the present embodiment of an online monitor for compressed air quality of an electric locomotive, when it is necessary to clean the inner wall of the monitoring cylinder compartment 310, the control host 50 will first start the pressure reducing valve 32 and reduce the unit inflow of air to avoid affecting the cleaning effect, and then inject cleaning liquid into the spray pipe 3103 through the high-pressure water delivery component 311, and quickly rinse the inner wall of the monitoring cylinder compartment 310 around by high-pressure spraying through the spray hole 3103a, so that the oil stains and dirt adhering to the inner wall are removed in time, and then inject clean water into the spray pipe 3103 through the high-pressure water delivery component 311, and perform a second cleaning of the inner wall of the cylinder compartment. It should be noted that during the continuous flushing process, the continuously entering compressed air flow can push the sewage accumulated in the cylinder directly toward the exhaust nozzle 3102.

[0027] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An online monitor for compressed air quality in electric locomotives, characterized in that: The invention comprises an air dryer air outlet (10), wherein the output end of the air dryer air outlet (10) is connected to an air outlet pipe (101), the bottom of the air outlet pipe (101) is connected to an air pipe (20), one end of the air pipe (20) away from the air outlet pipe (101) is connected to a monitoring cabinet (30), a measuring device is arranged in the middle section of the monitoring cabinet (30), a monitoring cylinder cabin (310) is arranged inside the measuring device, and one end of the monitoring cylinder cabin (310) is provided with an air inlet connected to the air pipe (20). The monitoring cylinder (310) has a nozzle (3101) at one end and the other end extends to an exhaust nozzle (3102) outside the measuring device, a spray pipe (3103) is fixed at the inner axis of the monitoring cylinder (310) along its length direction, and the spray pipe (3103) has evenly distributed spray holes (3103a) on the radial circumference, and the outside of the monitoring cylinder (310) is also provided with a high-pressure water delivery component (311) connected to the spray pipe (3103), and the measuring device is also provided with a plurality of sensor combination probes (312) for different purposes.

2. The online monitoring device for compressed air quality of electric locomotive according to claim 1, characterized in that: The two ends of the inner side of the monitoring cylinder cabin (310) are also provided with positioning grids (3104) for fixing the spray washing pipe (3103).

3. The online monitoring device for compressed air quality of electric locomotive according to claim 1, characterized in that: The high-pressure water delivery assembly (311) comprises a water delivery pipe (3111) having one end connected to the spray pipe (3103), a liquid tank (3112) connected to the other end of the water delivery pipe (3111), and a pressure pump (3113) arranged on the water delivery pipe (3111).

4. The online monitoring device for compressed air quality of electric locomotive according to claim 1, characterized in that: The monitoring chassis (30) is also provided with a pressure reducing valve (32) connected to the air inlet nozzle (3101), the air inlet end of the pressure reducing valve (32) is connected to a first electro-pneumatic valve (33), and the first electro-pneumatic valve (33) is connected to the air pipe (20), and the outer end of the exhaust nozzle (3102) is connected to a second electro-pneumatic valve (34) that cooperates with the first electro-pneumatic valve (33).

5. The online monitoring device for compressed air quality of electric locomotive according to claim 4, characterized in that: The exhaust end of the second electro-pneumatic valve (34) is also provided with a muffler (40).

6. The online monitoring device for compressed air quality of electric locomotive according to claim 4, characterized in that: The first electro-pneumatic valve (33), the second electro-pneumatic valve (34), the pressure reducing valve (32) and the measuring device (31) are connected to a control host (50) via wire signals.

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