A portable explosion-proof electrical product withstand voltage and internal ignition non-explosion test system

Abstract

The present invention discloses a portable explosion-proof electrical product pressure resistance and internal ignition without explosion transmission test system, including a gas source, a sample, an ignition device, a gas distributor, a film, a plurality of signal acquisition systems and a host computer; the film is coated on the outside of the sample to form a sealing structure; the gas source is output and connected to the gas distributor; the gas distributor mixes the gas source to form an explosive gas and then connects and transports it to the inside of the film through a gas distribution pipeline; the ignition device is connected to the inside of the film to ignite the inside of the film to explode; the plurality of signal acquisition systems are arranged at different positions on the sample and connected to the host computer to measure the pressure data of the mixed gas inside the sample at the moment of explosion in real time and transmit it to the host computer. By putting the explosion-proof electrical equipment into a film bag and using an automatic gas distributor to mix the mixed gas specified in the standard, the reference pressure measurement and internal ignition without explosion transmission test of the explosion-proof electrical equipment can be accurately performed, greatly improving the efficiency of the explosion-proof tank test.

Description

Technical Field

[0001] The invention relates to the technical field of testing devices, and in particular to a portable flameproof electrical product withstand voltage and internal ignition non-explosion transmission testing system. Background Art

[0002] Explosion-proof electrical products are widely used in explosive places where explosive gases, steam, dust or fibers may gather in industrial sectors such as petroleum, chemical industry, coal mining, textile, grain processing and military industry. The product quality, especially the explosion-proof safety quality, is closely related to safe production. In recent years, explosion accidents have occurred frequently in coal, oil mining and chemical production in my country, causing huge losses to the country and the people. With the emphasis on safety at home and abroad, electrical explosion-proof technology has also been booming. Explosion-proof electrical equipment has been continuously developing in the direction of high voltage, high power, heavy duty and large volume. At present, the largest explosion-proof electrical equipment explosion-proof tank in use in China is the Φ3.45m specification test tank developed by our company, with a maximum load of 30 tons. With the large-scale application of permanent magnet electric rollers for large hoists and explosion-proof permanent magnet electric rollers for transportation, the technical means of explosion-proof test evaluation cannot meet the demand. The inspection capacity of explosion-proof electrical equipment seriously lags behind the development of equipment technology and urgently needs to be improved. The development of large explosion-proof tanks costs nearly 10 million yuan and has higher requirements for sites.

[0003] It can be seen that how to improve the efficiency of the explosion-proof tank test system is a technical problem that needs to be solved in this field. Summary of the invention

[0004] In view of the technical problem of low efficiency of the existing explosion-proof tank test system, the purpose of the present invention is to provide a portable explosion-proof electrical product pressure resistance and internal ignition non-explosion transmission test system, which can accurately perform reference pressure measurement and internal ignition non-explosion transmission tests on the explosion-proof electrical equipment by placing the explosion-proof electrical equipment into a film bag and using an automatic gas distributor to mix the mixed gas specified in the standard, thereby improving the efficiency of the explosion-proof tank test and overcoming the problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the portable explosion-proof electrical product pressure resistance and internal ignition non-explosion transmission test system provided by the present invention includes a gas source, a sample, an ignition device, a gas distributor, a film, a signal acquisition system and a host computer; the film is coated on the outside of the sample to form a sealing structure; the gas source is output and connected to the gas distributor; the gas distributor mixes the gas source to form an explosive gas, which is then connected and transported to the inside of the film through a gas distribution pipeline; the ignition device is connected to the inside of the film to ignite the inside of the film to cause an explosion; the signal acquisition system is arranged on the sample and connected to the host computer to measure the pressure data of the mixed gas inside the sample at the moment of explosion in real time and transmit it to the host computer.

[0006] Furthermore, a gas analyzer is provided at the gas distribution pipeline between the gas distributor and the film, and the gas analyzer is connected to a host computer for data exchange; the gas analyzer performs data analysis on the content and concentration of the gas mixed by the gas distributor and transmits the data to the host computer for display.

[0007] Furthermore, the film is provided with a plurality of communication interfaces, and is connected to the gas distribution pipeline by pipeline, and is connected to the signal acquisition system and the ignition device by wire.

[0008] Furthermore, the film is connected to a vacuum pump; the vacuum pump is connected to the inside of the film through a communication interface on the film to extract air from the inside of the film.

[0009] Furthermore, the signal acquisition system includes a plurality of pressure sensors and a signal collector; the plurality of pressure sensors exchange data with the signal collector; and the signal collector exchanges data with a host computer.

[0010] Furthermore, the plurality of pressure sensors are arranged at different positions on the sample.

[0011] The portable flameproof electrical product withstand pressure and internal ignition non-explosion transmission test system provided in this solution can accurately measure the reference pressure and conduct internal ignition non-explosion transmission tests on flameproof electrical equipment by placing the flameproof electrical equipment into a film bag and using an automatic gas distributor to mix the mixed gas specified in the standard. It can also verify the explosion-proof performance of ultra-large flameproof electrical products on site, greatly improving the efficiency of explosion-proof tank testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of the explosion-proof tank test system.

[0014] The following is a description of the components in the accompanying drawings:

[0015] 100. Gas source 200. Gas distributor 300. Gas analyzer 400. Sample 500. Film 600. Signal acquisition system 700. Host computer 800. Ignition device 900. Vacuum pump 110. Air 120. First gas 130. Second gas 610. Pressure sensor 620. Signal collector DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific diagrams.

[0017] In view of the technical problem of low efficiency of the existing explosion-proof tank test system, the present invention provides a portable explosion-proof electrical product pressure resistance and internal ignition non-explosion transmission test system, which can accurately measure the reference pressure and internal ignition non-explosion transmission test of the explosion-proof electrical equipment by placing the explosion-proof electrical equipment in a film bag, using an automatic gas distributor to mix the mixed gas specified in the standard, connecting the ignition device, the pressure signal acquisition system, and the vacuum pump, thereby improving the efficiency of the explosion-proof tank test.

[0018] The portable flameproof electrical product withstand voltage and internal ignition non-explosion transmission test system provided in this solution includes a gas source 100, a gas distributor 200, a film 500, a signal acquisition system 600, a vacuum pump 900, a gas analyzer 300, an ignition device 800 and a host computer 700.

[0019] The film 500 seals the sample 400, and the air inside the sample 400 and the film 500 is extracted by the vacuum pump 900; the gas distributor 200 mixes and matches the gas source 100 and analyzes it through the gas analyzer 300, and then the gas is transmitted to the film 500 wrapping the sample 400, and then the inside of the film 500 is ignited by the ignition device 800. At the same time, the signal acquisition system 600 detects and collects the pressure data of the sample 400 inside the film 500 during the explosion in real time and displays it through the host computer 700.

[0020] Furthermore, the gas source 100 includes several kinds of gases, and the several kinds of gases are respectively connected to the gas distributor 200 through pipelines, and the gas source 100 is transmitted to the gas distributor 200 through the gas pipe for matching and mixing.

[0021] In this solution, three gases, namely, air 110, a first gas 120 and a second gas 130, are provided. The three gases are connected to a gas distributor through gas pipes.

[0022] The first gas 120 , the second gas 130 and the air 110 are input into the gas distributor 200 through the gas pipe, and the air 110 , the first gas 120 and the second gas 130 are mixed according to a set ratio through the gas distributor.

[0023] In this solution, the proportion of each gas is not limited, and can be determined according to actual conditions in specific applications; at the same time, the number of gas sources 100 is not limited to the above three gases, and can also be two gas sources; at the same time, the types of the first gas 120 and the second gas 130 when used are not limited, for example, they can be methane, ethane, propane, hydrogen, etc., and the specific type can be selected according to the specific explosion test requirements.

[0024] The gas distributor 200 is a portable automatic gas distributor, which is used to match the mixed gas specified in the standard to the test sample 400. It can replace the traditional large-volume fixed gas distributor, is easy to carry and has high gas distribution accuracy.

[0025] The gas type and the required mixed gas concentration are set on the operation interface of the gas distributor 200 , and the required mixed gas can be automatically configured with one-key start, and the mixed gas is output to the inside of the sample 400 or the gas analyzer 300 .

[0026] For example, common ones include a gas distributor that uses a three-way solenoid valve and a gas distributor that uses a mass flow meter.

[0027] Among them, the three-way electromagnetic gas distributor uses a single-chip microcomputer to control a three-way solenoid valve. By selecting the on and off of several gas routes, it adjusts the sampling volume of each gas route and obtains gas of a set concentration, thereby achieving gas matching.

[0028] The three-way electromagnetic gas distributor has high precision, is relatively simple to operate and has a relatively low price.

[0029] The mass flow gas distributor uses a single-chip microcomputer to control the flow of a mass flow meter, thereby achieving the ratio of different gases; the mass flow gas distributor has high gas distribution accuracy, but is relatively expensive.

[0030] The type of the gas distributor 200 in this solution is not limited to the two types of gas distributors exemplified above, and can be selected according to actual conditions in specific applications. At the same time, the structure and working principle of the gas distributor are well known to those skilled in the art, and will not be described in detail here.

[0031] A gas analyzer 300 is connected to the output end of the gas distributor 200; the gas analyzer 300 adopts a portable multi-parameter gas concentration tester, which is used to take samples from the outlet of the gas distributor 200 to analyze whether the concentration of the mixed gas meets the test requirements; and the gas analyzer 300 also interacts with the host computer 700 to transmit the mixed gas concentration analysis data to the host computer 700 for display, so that the operator can confirm it.

[0032] The gas analyzer 300 is internally provided with a gas sensor, which detects the composition and content of the gas and transmits the composition and content data of the gas to the host computer 700 for display.

[0033] There are many types of gas analyzers 300. For example, they can be thermal conductivity gas analyzers, thermal magnetic gas analyzers or electrochemical gas analyzers. In specific applications, they are not limited to the three types of gas analyzers mentioned above, and the specific use can be determined according to the situation. At the same time, the structure and working principle of the gas analyzer 300 are well known to those skilled in the art, so they will not be elaborated here.

[0034] The output end of the gas distribution instrument 200 is connected to the film 500 through a gas distribution pipeline, and the mixed gas is transmitted to the sample 400 and the inside of the film 500 through the gas distribution pipeline.

[0035] The sample 400 is placed inside the film 500, and the opening of the film 500 is sealed by a thermoforming machine to avoid the danger caused by the leakage of explosive gas and the concentration error caused by the mixing of air; the film 500 is coated on the outside of the sample 400, which is used to verify whether the sample 400 under test has failed to explode.

[0036] The film 500 is provided with a plurality of communication interfaces 510 for connecting with gas distribution pipelines, vacuum pump 900 pipelines, ignition device 800 signal lines, signal acquisition system 600 and the like.

[0037] In this solution, a quick plastic-sealed flame-resistant film is preferably used, which can replace the film-type explosion-proof tank of the traditional explosion-proof test tank.

[0038] Compared with existing films, the quick-sealed flame-resistant film has low cost, good safety and is portable. At the same time, it is made of high-strength flame-resistant material and can withstand 0.02MPa and 98% vacuum without damage. The internal explosive gas will not burn after the explosion, so it is safe. Secondly, this film can be used to test explosion-proof electrical products of any shape and volume, and has high applicability.

[0039] Furthermore, the communication interface 510 in the present solution preferably adopts a pipeline quick threaded docking socket, which is convenient for on-site connection; the signal line and the threaded interface tooling are cast and sealed as one, and the sealing performance is good.

[0040] A signal acquisition system 600 is provided on the sample 400; the signal acquisition system 600 is installed at different positions of the sample 400 and connected to an external host computer 700 through a connecting port 510 of the film, and is used to measure the pressure of the mixed gas inside the sample 400 at the moment of explosion in real time, and transmit the collected pressure data to the host computer 700 for display and storage, so that the staff can view it in real time.

[0041] Furthermore, the signal acquisition system 600 includes a plurality of pressure sensors 610, an amplifier and a signal collector 620; wherein the plurality of pressure sensors 610 are respectively arranged at different positions of the sample 400 inside the film 500, for real-time measurement of the pressure of the mixed gas inside the sample 400 at the moment of explosion.

[0042] A plurality of pressure sensors 610 are connected to an external amplifier and a signal collector 620 by respectively passing through the communication interface 510 on the film 500 via signal lines, and the collected pressure data is amplified by the amplifier and then transmitted to the signal collector 620; the signal collector 620 is connected to the host computer 700, and the pressure data collected by the pressure sensor 610 is transmitted to the host computer 400 for storage and display.

[0043] It should be noted here that the pressure sensor 610 and the external amplifier or signal collector 620 can also exchange data through signal connection.

[0044] The ignition device 800 is connected to the inside of the film 500 through the communication interface 510 on the film 500 and is used to detonate the explosive mixed gas in the test sample 400.

[0045] The ignition device 800 can be ignited on site through an operating device; the ignition device 800 can also be ignited by remotely controlling the host computer 700; the specific method can be selected according to the actual situation.

[0046] The vacuum pump 900 is connected to the inside of the film 500 through the communication interface 510 on the film to extract the air inside the film 500 to ensure the reliability and stability of the explosion test of the test sample 400.

[0047] The following example illustrates the working process of the present solution when in use; it should be noted that the following content is only a specific application example of the present solution and does not constitute a limitation on the present solution.

[0048] The gas distributor 200, the ignition device 800, the vacuum pump 900 and the communication interface 510 connected to the film 500 are connected; after the pressure sensor 610 is installed at different positions of the sample 400 and the pressure sensor 610 is connected to the host computer 700, a thermoforming machine is used to press-seal the film opening to make the film 500 sealed.

[0049] First, the gas type and the required mixed gas concentration are set on the operation interface of the gas distributor 200 , and the required mixed gas can be automatically configured with one-key start, and the mixed gas is output to the inside of the sample 400 or the gas analyzer 200 .

[0050] The gas analyzer 200 analyzes the concentration and content of the mixed gas through the gas sensor and transmits the data to the host computer 700 for confirmation by the staff.

[0051] The vacuum pump 900 extracts the air inside the film to ensure that the film 500 is in a vacuum state; when the mixed gas is transmitted to the inside of the film 500, the ignition device 800 is started, and the inside of the film 500 explodes. The pressure sensor 610 measures the pressure of the mixed gas inside the sample 400 at the moment of explosion in real time and transmits it to the host computer 700 for data analysis through the computing module, and stores and displays it.

[0052] In summary, the portable flameproof electrical product withstand voltage and internal ignition non-explosion transmission test system provided by this solution can accurately measure the reference pressure and conduct internal ignition non-explosion transmission tests on flameproof electrical equipment by placing the flameproof electrical equipment into a film bag, using an automatic gas distributor to mix the mixed gas specified in the standard, connecting the ignition device, the pressure signal acquisition system, and the vacuum pump, thereby greatly improving the efficiency and reliability of the explosion-proof tank test.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A portable explosion-proof electrical product withstand voltage and internal ignition non-explosion test system, including a gas source, a sample, and an ignition device, characterized in that: It also includes gas distribution instrument, membrane, vacuum pump, signal acquisition system and host computer; The sample is placed inside the film, and the opening of the film is sealed by a thermoforming machine so that the film is sealed and wrapped around the outside of the sample to form a sealed structure, which is used to verify whether the sample under test has failed to explode; a vacuum pump is connected to the film; the vacuum pump is connected to the inside of the film through a communication interface on the film to extract the air inside the film; the gas source output is connected to a gas distributor; The gas distributor mixes the gas source to form the explosive gas, which is then connected and transported to the inside of the film through the gas distribution pipeline. The explosive gas does not burn after the explosion. The ignition device is connected to the inside of the film to detonate the explosive mixed gas in the sample; The signal acquisition system is arranged on the sample and connected to the host computer, and measures the pressure data of the mixed gas inside the sample at the moment of explosion in real time and transmits it to the host computer; A gas analyzer is provided at the gas distribution pipeline between the gas distributor and the film, and the gas analyzer is connected to the host computer for data exchange; the gas analyzer performs data analysis on the content and concentration of the gas mixed by the gas distributor and transmits the data to the host computer for display; The gas distributor configures the required explosion gas and outputs the explosion gas to the inside of the sample or the gas analyzer. The vacuum pump extracts the air inside the film to ensure that the inside of the film is in a vacuum state. Then, when the explosion gas is transmitted to the inside of the film, the ignition device is started. At this time, the explosion gas inside the sample explodes and the internal explosion gas does not burn after the explosion.

2. A portable flameproof electrical product withstand voltage and internal ignition non-explosion test system according to claim 1, characterized in that: The film is provided with a plurality of communication interfaces, and is connected to the gas distribution pipeline by pipeline, and is connected to the signal acquisition system and the ignition device by wire.

3. A portable flameproof electrical product withstand voltage and internal ignition non-explosion test system according to claim 1, characterized in that: The signal acquisition system includes a plurality of pressure sensors and a signal collector; the plurality of pressure sensors and the signal collector perform data exchange; the signal collector performs data exchange with a host computer.

4. A portable explosion-proof electrical product withstand voltage and internal ignition non-explosion transmission test system according to claim 2, characterized in that: The plurality of pressure sensors are arranged at different positions on the sample.

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