Air filter element flow testing system

Abstract

The utility model provides an air filter element flow testing system. The air filter element flow testing system comprises an air compressor, a freezing dryer, a first filter assembly, an air storage tank, a second filter, a testing tank and a differential pressure transmission which are sequentially connected through pipelines. A first control valve is arranged between the first filter assembly and the gas storage tank, a second control valve is arranged between the second filter assembly and the test tank, and a flow meter and a third control valve are arranged on a pipeline at the output end of the test tank. The testing system further comprises a PLC control cabinet which is in signal connection with the air compressor, the first control valve, the second control valve, the third control valve, the flow meter and the differential pressure transmission. Through the arrangement, the opening / closing states of the first control valve, the second control valve and the third control valve are controlled through the PLC control cabinet according to actual requirements, and testing automation is achieved according to feedback data of the air compressor, the flow meter and the differential pressure transmission and data information of the monitoring system.

Description

TECHNICAL FIELD

[0001] The utility model relates to test equipment technical field especially relates to an air filter element flow test system. BACKGROUND

[0002] With the continuous rise of the air quality requirement of each industry and the increasing precision degree of equipment, the accurate control of the performance of air filter element is increasingly imminent, and the flow characteristic of air filter element is undoubtedly an important index for measuring the performance.

[0003] Most of the early test methods lack automation degree, need manual adjustment of test parameters, record data by operating personnel, not only consume a lot of manpower, time cost, and manual operation is extremely easy to introduce artificial error, makes the reliability of test result greatly discounted. Furthermore, the compatibility of part of existing test systems is poor, can only test the air filter element of specific model, specification, when facing the new filter element products emerging in the market, or the special filter element under the customized demand of different industries, often helpless, cannot complete the flow test task flexibly and efficiently.

[0004] Therefore, it is necessary to design an improved air filter element flow test system to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing an air filter element flow test system which is automatic and has strong compatibility.

[0006] In order to realize the above utility model purpose, the utility model provides an air filter element flow test system, which comprises an air compressor, a cold dryer, a first filter assembly, a gas storage tank, a second filter and a test tank for installing an air filter element, which are connected by pipes in sequence; a first control valve is arranged between the output end of the first filter assembly and the input end of the gas storage tank, a second control valve is arranged between the output end of the second filter and the input end of the test tank, and a flowmeter and a third control valve are arranged on the pipeline of the output end of the test tank; the flowmeter is arranged on the input side of the third control valve; the air filter element flow test system further comprises a differential pressure variator, and the pressure guide pipes on both sides of the differential pressure variator are connected with a first pressure measuring point and a second pressure measuring point respectively; the first pressure measuring point is arranged between the second control valve and the input end of the test tank, and the second pressure measuring point is arranged between the output end of the test tank and the flowmeter; the air filter element flow test system further comprises a PLC control cabinet for controlling and displaying real-time data; the PLC control cabinet is signal connected with the air compressor, the first control valve, the second control valve, the third control valve, the flowmeter and the differential pressure variator.

[0007] As a further improvement of the utility model, the number of the gas storage tanks is two, two the gas storage tanks and the air compressor are arranged side by side in the first row, the cold dryer, the first filter assembly and the PLC control cabinet are arranged side by side in the second row, and the second filter is arranged side by side between the first row and the second row.

[0008] As a further improvement of the utility model, the air compressor is arranged side by side with the cold dryer.

[0009] As a further improvement of the utility model, the first filter assembly comprises a water removal filter for removing water in compressed gas, an oil removal filter for removing oil in compressed gas and an impurity removal filter for removing impurities in compressed gas, which are connected by pipelines in sequence.

[0010] As a further improvement of the utility model, the first filter assembly is arranged between the cold dryer and the PLC control cabinet, the impurity removal filter is arranged close to the cold dryer, and the water removal filter is arranged close to the PLC control cabinet.

[0011] As a further improvement of the utility model, the second filter is an impurity removal filter for removing impurities in compressed gas.

[0012] As a further improvement of the utility model, a display screen is arranged on the PLC control cabinet.

[0013] As a further improvement of the utility model, the specification of the single gas storage tank is 1 cubic meter.

[0014] As a further improvement of the utility model, the first control valve, the second control valve and the third control valve are all electric ball valves.

[0015] As a further improvement of the utility model, the test tank can place 5-20 inch air filter elements.

[0016] The utility model has the advantages of:

[0017] The air filter element flow test system provided by the utility model comprises an air compressor, a cold dryer, a first filter assembly, a gas storage tank, a second filter, a test tank for mounting an air filter element and a PLC control cabinet which are sequentially connected by pipelines.

[0018] The fusion technology of multiple sensors (a flow meter and a differential pressure variator) is adopted, and the flow measurement error range is controlled within ±1%. The whole process is automated: from parameter setting, data acquisition to report generation, no manual intervention is needed, and the single detection time is shortened to 5 minutes (more than 30 minutes is needed in the traditional way). BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the air filter element flow test system of the utility model.

[0020] Figure 2 It is a working schematic view of the air filter element flow test system of the utility model.

[0021] Figure 3 It is a top view of the air filter element flow test system of the utility model.

[0022] Figure 4 It is a partial enlarged view of Figure 3 the utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model is described in detail below by combining with the drawings and specific embodiments.

[0024] Here, it also needs to be explained that, in order to avoid the fact that the utility model is obscured by unnecessary details, only the structures and / or processing steps closely related to the scheme of the utility model are shown in the drawings, and other details not closely related to the utility model are omitted.

[0025] It is also important to note that the term "comprising" or "including" or any other variation thereof is intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not required to comprise only those elements but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses.

[0026] Referring to Figures 1 to 4 As shown in the drawings, the utility model provides an air filter element flow test system, including through pipeline connection for compressed air's air compressor 1, for drying compressed air's cold dryer 2, first filter assembly 3, for storing compressed air's gas storage tank 4, second filter 5 and for installing air filter element's test tank 6.

[0027] In the embodiment, first filter assembly 3 includes through pipeline connection for removing the moisture in compressed gas's water filter 31, for removing the oil in compressed gas's oil filter 32 and for removing the impurity in compressed gas's impurity filter 33.Water filter 31's input end is connected with cold dryer 2's output end, and the output end of impurity filter 33 is provided with first control valve 91 between the input end of gas storage tank 4.

[0028] The number of gas storage tank 4 is two, and the specification of single gas storage tank is 1 cubic meter.By setting two gas storage tanks 4, the gas storage capacity is increased.The output end of gas storage tank 4 is connected with second filter 5.In the embodiment, second filter 5 is impurity filter, to further remove the impurity in compressed air, avoid the impurity into test tank 6, interfere with test result.

[0029] Second filter 5's output end is provided with second control valve 92 between test tank 6's input end, and the pipeline of test tank 6's output end is provided with flowmeter 8 and third control valve 93.Flowmeter 8 is arranged at the input side of third control valve 93.Flowmeter 8 is used to test the gas flow of test tank 6 output side, and the data is fed back to PLC control cabinet 10.

[0030] The air filter element flow test system further comprises a differential pressure transmitter 7 for measuring and feeding back the pressure difference.The pressure guide pipes on both sides of differential pressure transmitter 7 are connected with first pressure measuring point A and second pressure measuring point B respectively.First pressure measuring point A is arranged between second control valve 92 and the input end of test tank 6, and second pressure measuring point B is arranged between the output end of test tank 6 and flowmeter 8.

[0031] The air filter element flow test system further comprises a PLC control cabinet 10 for controlling and displaying real-time data.In the embodiment, first control valve 91, second control valve 92 and third control valve 93 are all electric ball valves, which are used to control the opening and closing of pipeline gas flow and the size of flow.

[0032] The PLC control cabinet 10 is signal connected with the air compressor 1, the first control valve 91, the second control valve 92, the third control valve 93, the flow meter 8 and the differential pressure transmitter 7. The PLC control cabinet comprises a control panel and a display screen, and can receive and display data information of the air compressor 1, the first control valve 91, the second control valve 92, the third control valve 93, the flow meter 8 and the differential pressure transmitter 7 in real time.

[0033] In this way, the opening / closing states of the first control valve 91, the second control valve 92 and the third control valve 93 can be controlled by the PLC control cabinet 10 according to actual needs, and the data information of the system can be monitored according to the feedback data of the air compressor 1, the flow meter 8 and the differential pressure transmitter 7.

[0034] In the embodiment, two air tanks are arranged side by side with the air compressor 1 in the first row, the first air tank 41 is arranged close to the air compressor 1, and the second air tank 42 is arranged on the outer side. The cold dryer 2, the first filter assembly 3 and the PLC control cabinet 10 are arranged side by side in the second row; the second filter 5 and the test tank 6 are arranged between the first row and the second row. The air compressor 1 and the cold dryer 2 are arranged side by side.

[0035] The first filter assembly 3 is arranged between the cold dryer 2 and the PLC control cabinet 10, and the impurity removal filter 33 is arranged close to the cold dryer 2, and the water removal filter 31 is arranged close to the PLC control cabinet 10. That is, the compressed air is dried by the cold dryer 2, then flows into the water removal filter 31 arranged away from the cold dryer 2 through the pipeline arranged above the first filter assembly 3, then is transmitted through the pipeline connecting the adjacent filters arranged in the lower part of the first filter assembly 3, and then is transmitted to the air tank 4 for standby through the pipeline. Through reasonable layout, the floor area of the air filter element flow test system is reduced.

[0036] The single test tank 6 can accommodate 5-20 inches of air filter elements to be tested, and can be used for testing different types of air filter elements.

[0037] The working process of the air filter element flow test system is as follows:

[0038] 1) Preparation stage, all instruments and meters are in the closed state;

[0039] 2) Turn on the air compressor 1 and the cold dryer 2 to compress and dry the air;

[0040] 3) Turn on the first control valve 91 (the second control valve 92 and the third control valve 93 are in the closed state), and the compressed air is filled into the first air tank 41 and the second air tank 42 after being filtered by the first filter assembly 3;

[0041] 4) The air tank is full of air, the first control valve 91 is closed, the second control valve 92 and the third control valve 93 are opened, and the air starts to test the flow after passing through the second filter 5;

[0042] 5) The differential pressure transmission 7 is controlled by the PLC control cabinet 10, and the flow at any differential pressure in the range of 0.1-3 bar is tested under the condition of any pressure of 0.1, 0.2, 0.3, 0.4, 0.5, 1, 2, 3, 4, 5 bar, so as to obtain the flow of the air filter element to be tested.

[0043] The above examples are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. An air filter element flow test system characterized by: The air compressor, the cold dryer, the first filter assembly, the air storage tank, the second filter and the test tank for installing the air filter element are sequentially connected by pipes; a first control valve is arranged between the output end of the first filter assembly and the input end of the air storage tank, a second control valve is arranged between the output end of the second filter and the input end of the test tank, and a flow meter and a third control valve are arranged on the pipe of the output end of the test tank; the flow meter is arranged on the input side of the third control valve; the air filter element flow test system further comprises a differential pressure variator, and the pressure guide pipes on both sides of the differential pressure variator are connected with a first pressure measuring point and a second pressure measuring point respectively; the first pressure measuring point is arranged between the second control valve and the input end of the test tank, and the second pressure measuring point is arranged between the output end of the test tank and the flow meter; the air filter element flow test system further comprises a PLC control cabinet for controlling and displaying real-time data; the PLC control cabinet is signal connected with the air compressor, the first control valve, the second control valve, the third control valve, the flow meter and the differential pressure variator.

2. The air filter element flow test system of claim 1, wherein: The number of the air storage tanks is two, the two air storage tanks are arranged side by side with the air compressor in a first row, and the cold dryer, the first filter assembly and the PLC control cabinet are arranged side by side in a second row; the second filter is arranged side by side with the test tank between the first row and the second row.

3. The air filter element flow test system of claim 2, wherein: The air compressor is arranged side by side with the cold dryer.

4. The air filter element flow test system of claim 2, wherein: The first filter assembly comprises a water removal filter for removing water in compressed gas, an oil removal filter for removing oil in compressed gas and a impurity removal filter for removing impurities in compressed gas, which are sequentially connected by pipes.

5. The air filter element flow test system of claim 4, wherein: The first filter assembly is arranged between the cold dryer and the PLC control cabinet, the impurity removal filter is arranged close to the cold dryer, and the water removal filter is arranged close to the PLC control cabinet.

6. The air filter element flow test system of claim 1, wherein: The second filter is an impurity removal filter.

7. The air filter element flow test system of claim 1, wherein: A display screen is arranged on the PLC control cabinet.

8. The air filter element flow test system of claim 1, wherein: The specification of a single air storage tank is 1 cubic meter.

9. The air filter element flow test system of claim 1, wherein: The first control valve, the second control valve and the third control valve are all electric ball valves.

10. The air filter element flow test system of claim 1, wherein: The specification range of the air filter element to be tested suitable for the test tank is 5-20 inches.

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