CN102072812A - Test device for water sprinkling distribution performance - Google Patents
Test device for water sprinkling distribution performance Download PDFInfo
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- CN102072812A CN102072812A CN 201010526567 CN201010526567A CN102072812A CN 102072812 A CN102072812 A CN 102072812A CN 201010526567 CN201010526567 CN 201010526567 CN 201010526567 A CN201010526567 A CN 201010526567A CN 102072812 A CN102072812 A CN 102072812A
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Abstract
The invention relates to a test device for water sprinkling distribution performance, which comprises a measuring control system, a water supply system, a water collecting system and a weighing system, wherein the measuring control system consists of a host computer, a programmable logic controller (PLC) control cabinet and a printer; the PLC control cabinet comprises a PLC module unit and an electric circuit formed by connecting a contactor, a thermal relay and an intermediate relay; and a switching switch is arranged on the PLC control cabinet and is used for switching manual and automatic running states. The test device has the advantages of reducing the conversion process, calculating water sprinkling density directly by weight, obtaining weight data directly, and recording, generating and printing reports automatically, along with high measuring accuracy and automaticity; and the device has the characteristics of simple structure, capability of disassembly and moving, low construction cost and wide application range.
Description
Technical field
The present invention relates to the fire control equipment testing apparatus, particularly a kind of watering distribution performance proving installation that is used for the automatic sprinkler system sprinkler tip, enlarges the watering distribution performance test of area coverage sprinkler tip, waterfog head and ESFR shower nozzle.
Background technology
Watering distribution performance proving installation is to be used for automatic sprinkler system sprinkler tip, waterfog head, the early stage watering distribution performance testing equipment of response (ESFR) shower nozzle fast that suppresses.Whether sprinkler tip, waterfog head or ESFR shower nozzle can be according to the watering shape waterings of design; and in its area of protecting (watering scope), satisfy the minimum watering density of standard-required; being related to shower nozzle and whether can effectively implementing fire extinguishing, control fire or cooling, is one of important indicator of estimating the sprinkler performance quality.So not only fire product inspection body has the test unit of measuring the watering distribution performance, a lot of manufacturers are also to the own shower nozzle of the producing distribution tests of sprinkling water, so that the performance of grasp product.
At present, abroad with the automatic sprinkler system examination and test of products or test relevant testing laboratory and mainly contain United States plants mutuality (Factory Mutual is hereinafter to be referred as FM), American insurance merchant testing laboratory (UL) and the Britain association (LPC) or the like that takes precautions against natural calamities.
FM provides third party's test, assessment authentication and the approval mechanism of insurance products and service, and the content of approval and authentication comprises automatic sprinkler fire-extinguishing system, building materials, fixed fire extinguishing system, inflammable gas equipment, hydrant and water band.The research that FM carries out at water sprinkling fire-distinguishing system aspects, detection, standard are worked out, and are state-of-the-art in the world, the most authoritative at present.
American insurance merchant testing laboratory (UL) be one detect and the checking Product Safety, independently, nonprofit organization, be found in 1894, the product public safety performance of having carried out more than 100 year detects.
Above-mentioned these testing laboratories all are provided with the test unit of measuring shower nozzle watering distribution performance, its version is basic identical, be generally: manually opened valve discharges water during water supply, the water that the part of catchmenting will be sprayed onto in the collecting box imports in the measurement bucket, the water yield that method measurement collection by measuring liquid level arrives, last manual unlocking water drain valve is outwelled the water of measuring in the bucket.When carrying out the cloth water test, the flow of manual adjustment pipe network is closed water supply valve to trial value, after one by one the water in the dust-collecting bucket being outwelled, opens the water supply valve test again, then the water yield that arrives by the outer glass-tube liquid level meter measurement collection of dust-collecting bucket.Whole process is that manually-operated is finished basically.The method that measure portion adopts liquid level gauge to show has that it is directly perceived, the advantage of easy operating, but because it is bigger than normal to measure the bucket diameter, read the factors such as deviation that liquid level numerical value causes and can cause very big influence to the precision of measuring, so the automaticity of this class device is very low, measuring accuracy is not high.
External representational enterprise such as Reliability Corp. that produces the water system product, its distribution performance method of testing is similar substantially to the FM employing.
Domestic situation: the water distribution test unit that adopts before national fixed fire extinguishing system and the fire retarding component quality supervision and test centrales was built in 1988, it is the existing unique device that can carry out the cloth water test of China to different shower nozzles, its structure is: adopt the lifting of HYDRAULIC CONTROL SYSTEM collecting box and the upset of water receiver, thereby (scope is 2.14m～2.70m) apart from the spacing of furred ceiling to adjust collecting box, finish water receiver water receiving and pouring, and by the minimum watering density of the mensuration shower nozzle of the contact switch in the water receiver, to common sagging installation or the vertically installed nominal bore sprinkler tip that is 15mm by GB5135 very convenient being suitable for of testing, but inapplicable for the sprinkler tip of other bores and the shower nozzle of other types (as waterfog head), then can't test the ESFR shower nozzle.
Over one hundred family of enterprise of products such as domestic production sprinkler tip, waterfog head, water distribution test unit complexity is thought by most producers, the cost height, be not equipped with special-purpose water distribution test unit, special water distribution testing laboratory is had in indivedual key big factories, but test facilities are generally fairly simple, the method that collecting box is manually put in general employing, after treating off-test, box is weighed one by one, calculates then.Test facilities are simple and crude, and measuring accuracy is low, and labour intensity is big.The water distribution test unit that adopts is built in late nineteen eighties at present, usually adopt the lifting of HYDRAULIC CONTROL SYSTEM collecting box and the upset of water receiver to finish water receiver water receiving and pouring, collecting box is 2.14m～2.70m apart from the spacing setting range of furred ceiling, water receiver total measurement (volume) 10.5L, measuring the minimum watering density of shower nozzle (output switching value signal) by the contact switch in the water receiver, is that 15 sprinkler tip is tested very easy by GB5135 to common sagging installation or vertically installed nominal bore.
Its advantage is: easy and simple to handle; Automaticity is higher; Measuring speed is fast, the efficient height;
Its shortcoming is also clearly: the liquid level contact switch can influence its conduction property because of soaking for a long time in water, and its output signal accuracy is lowered; Collecting box is little apart from the setting range of furred ceiling; The water receiver total measurement (volume) is little;
What measure output is the switching value signal, can not accurate description watering distribution situation; The scope of application is little, can not satisfy the testing requirements to bigbore sprinkler tip, sidewall sprinkler head, waterfog head, ESFR shower nozzle; (part test at present can only adopt simpler and cruder method to carry out); The operation of Z80 microcomputer is to the environmental requirement height, and existing building environment is difficult to guarantee the machine operate as normal.
Summary of the invention
Purpose of the present invention is exactly for overcoming the deficiencies in the prior art, at the not high present situation of watering distribution performance proving installation automaticity, a kind of technical scheme that the watering distribution performance proving installation of higher automaticity is arranged is provided, makes proving installation reach measuring accuracy height, good operating stability, test favorable repeatability; Device can all be dismantled, and is removable, and furred ceiling is big apart from the collecting box setting range; Install applied widely; The level that the unit engineering cost is low, automaticity is high.
The present invention realizes by such technical scheme: watering distribution performance proving installation, comprise Measurement and Control System, water system, water gathering system and weighing system, it is characterized in that, described Measurement and Control System is made up of host computer, PLC switch board and printer, comprise PLC modular unit and the electric wiring that connects and composes by contactor, electrothermal relay, auxiliary reclay in the PLC switch board, on the PLC switch board switch is housed, is used to switch manual and automatic running status;
The PLC modular unit comprises CPU module, power module, digital quantity input module, digital quantity output module and analog quantity load module, and the PLC switch board is connected with electrical equipment with the measurement mechanism of water system, water gathering system, weighing system respectively;
When PLC switch board switch switched to automatic running status: the PLC switch board was by the PLC programmed control field apparatus of operation PLC modular unit prepackage, realize measurement, collection, monitoring and the processing of watering distributed data, the configuration software that operates on the host computer is communicated by letter with the PLC modular unit by CP 5611 cards; Operation host computer configuration software control window is realized the automatic control to the electrical ball valve in the electrically operated valve in the water system pipes, water gathering system and the weighing system, and by configuration software automatically generated data form;
Described water system mainly is made up of water pump assembly, movable furred ceiling, trunk pipeline, branch line, discharge pipe line, flowmeter, pressure transducer, electrically operated valve, hand valve; Movable furred ceiling is adjustable apart from ground 2.8m-7m, adjusts distance between the collecting box of movable furred ceiling and water gathering system by controlling movable furred ceiling lifting; The test set water area is: 4.0m * 4.0m+2.5m * 3.0m; The supply line that configuration is made up of trunk pipeline and branch line on the movable furred ceiling, the branch line end is provided with spray-head interface, and spray-head interface is used to connect sprinkler tip, waterfog head, ESFR shower nozzle, EC shower nozzle and the quick shower nozzle of low pressure; Flowmeter, pressure transducer are installed on the trunk pipeline, and electrically operated valve, hand valve are installed on the branch line; Spray-head interface is distributed on the movable furred ceiling by requirement of experiment; The curtage signal of flowmeter, pressure transducer sends Measurement and Control System to;
Described water gathering system comprises group frame and collecting box, some collecting boxs is installed in forms the collecting box array on the group frame; Wherein some collecting boxs of vertically arranging form one group of collecting box group, some collecting box groups are laid side by side and are formed the collecting box array, collecting box is suitable for reading to be rectangular aperture, the center is for there being osculum at the bottom of the box, draining straight tube of the vertical connection of osculum at the bottom of each collecting box box, three the two moving ball valves of energising are installed on the draining straight tube, and the control terminal of electrical ball valve is wired to the PLC switch board of Measurement and Control System, and PLC switch board control electrical ball valve opens or closes; Draining straight tube end opening is equipped with threeway, the draining straight tube links to each other with mozzle by threeway, the draining straight tube of the collecting box of same collecting box group is connected in parallel on the same mozzle, mozzle has an angle of inclination by end to front end, the angle of inclination is 5～10 degree, mozzle extends to front end, and front port is a water delivering orifice, puts a weigh tank respectively below the water delivering orifice of corresponding each bar mozzle;
Described weighing system is made of weigh tank, support, LOAD CELLS, weight transmitter and electrical ball valve, and each weigh tank outer wall is provided with hanger, and hanger is evenly distributed on the circumference at 120 ° at weigh tank outer wall interval, is used for fixing three LOAD CELLS are installed; LOAD CELLS is the S type, and is rack-mount with the drop hanger formula; At the bottom of the lower end of weigh tank is circular arc, on the drainpipe of center pit electrical ball valve is housed at the bottom of the circular arc.
The technical scheme of the watering distribution performance proving installation of employing of the present invention, adopt realize the sprinkling water measurement of distributed data of PLC cabinet and host computer, inlet pipe, drain pipe road electrically operated valve and electrical ball valve are realized control automatically, its advantage is measuring accuracy height, plant automation degree height, reduced the conversion process, weight can directly calculate watering density, directly draws weight data, can write down automatically, generate automatically and printing reports; Watering distribution performance proving installation has simple in structure, all detachable, removable, and the characteristics that construction costs is low are applied widely.
Description of drawings
Fig. 1, Measurement and Control System circuit structure diagram;
Fig. 2, collecting box layout;
Fig. 3, supply channel synoptic diagram;
Fig. 4, collecting box group side view
Fig. 5, collecting box group front elevation;
Fig. 6, barrel front view of weighing;
Fig. 7, barrel vertical view of weighing.
Embodiment
For a more clear understanding of the present invention, describe the present invention in conjunction with the accompanying drawings and embodiments in detail:
As Fig. 1 to watering distribution performance proving installation shown in Figure 7, comprise Measurement and Control System, water system, water gathering system and weighing system, Measurement and Control System is made up of host computer, PLC switch board and printer, comprise PLC modular unit and the electric wiring that connects and composes by contactor, electrothermal relay, auxiliary reclay in the PLC switch board, on the PLC switch board switch is housed, is used to switch manual and automatic running status;
The PLC modular unit comprises CPU module, power module, digital quantity input module, digital quantity output module and analog quantity load module, the PLC switch board is connected with electrical equipment with the measurement mechanism of water system, water gathering system, weighing system respectively, when PLC switch board switch switched to automatic running status: the PLC switch board was by the PLC programmed control field apparatus of operation PLC modular unit prepackage, realize measurement, collection, monitoring and the processing of watering distributed data, the configuration software that operates on the host computer is communicated by letter with the PLC modular unit by CP 5611 cards; Operation host computer configuration software control window is realized the robotization control to the electrical ball valve in the electrically operated valve in the water system pipes, water gathering system and the weighing system, and by configuration software automatically generated data form;
The PLC modular unit adopts Programmable Logic Controller S7-300, and S7-300 comprises CPU module CPU 314, analog quantity load module SM331, digital quantity input module SM321 and digital quantity output module SM322; By the communication interface on the CPU module CPU 314, the CP 5611 that connects in the host computer with communication cable blocks; Programmable Logic Controller S7-300 is communicated by letter with host computer.
The weight signal of the LOAD CELLS collection of weighing system is sent to weight transmitter, be converted to the 4-20mA simulating signal through weight transmitter, be sent to analog quantity load module SM331 input port again, data handled by the ready-made program in the CPU module CPU 314.
Host computer is installed Windows 2000 operating systems and MCGS configuration software, editor MCGS configuration software, make water distribution technology picture and test operation picture respectively with numeral, the bar graph mode shows and by MCGS configuration software automatic report generation;
Computing machine can adopt automatic program control and keyboard switch control respectively to the control of valve in the test.Computing machine transfers to the digital quantity input module of S7-300 with the program of setting, by Programmable Logic Controller output switching value signal, by-pass valve control switch.
Weighing terminal and computing machine calculate the function record and show and measure water yield result, also can be directly from weighing terminal manual record water yield data.
If computing machine breaks down, can adopt manual manipulation mode, the action of manual operation switch by-pass valve control; Adopt the manual record mode, obtain collecting box water yield data from weighing terminal (weighting display instrument).
LOAD CELLS is selected METTLER TOLEDO TSC 50kg sensor;
The selected SIMATIC S7-300 of this device PLC module performance parameter:
CPU module: CPU 314;
Analog quantity load module: SM331;
Digital quantity input module: SM321;
Digital quantity output module: SM322;
Memory card module: MMC64K;
Power module: PS307;
Communication module: CP5611;
Water system mainly is made up of water pump assembly, movable furred ceiling, trunk pipeline, branch line, discharge pipe line, flowmeter, pressure transducer, electrically operated valve, hand valve; Adopt the lifting of hydraulic means control activity furred ceiling, the distance between the collecting box of adjustment activity furred ceiling and water gathering system; Movable furred ceiling is adjustable apart from ground 2.8m-7m, and the test set water area is: 4.0m * 4.0m+2.5m * 3.0m; The supply line that configuration trunk pipeline and branch line are formed on the movable furred ceiling, the branch line end is provided with spray-head interface, and spray-head interface is used to connect sprinkler tip, waterfog head, ESFR shower nozzle, EC shower nozzle and the quick shower nozzle of low pressure; Spray-head interface is distributed on the movable furred ceiling by requirement of experiment;
The test pipeline is made according to standard-required.The arm of difference supporting 3.5m, 3.0m, 2.5m, 1.5m length, arm diameter 25mm; Water supply trunk pipe range 4.0m crosses flow diameter 65mm; Gate valve, turbo flow meter, automatically controlled drench valve, pressure transducer are housed, at the terminal draining solenoid valve of installing of main pipe on main pipe.
The curtage signal of turbo flow meter, automatically controlled drench valve, pressure transducer sends Measurement and Control System to;
Be illustrated in figure 3 as the special ESFR showerhead configurations two-way supply line that is, except that above single channel pipe network, on the trunk pipeline, reserve DN65 hydrant interface, can the water receiving band when needing, form the two-way water supply pipeline.
As Fig. 2, Fig. 4, shown in Figure 5, water gathering system comprises group frame 1 and collecting box 2, some collecting boxs 2 is installed in forms the collecting box array on the group frame 1; Some collecting boxs 2 of wherein vertically arranging form one group of collecting box group, some collecting box groups are laid side by side and are formed the collecting box array, collecting box 2 is suitable for reading to be rectangular aperture, the center is for there being osculum at the bottom of the box, draining straight tube 3 of the vertical connection of osculum at the bottom of each collecting box 2 box, three the two moving ball valves 4 of energising are installed on the draining straight tube 3, and the control terminal of electrical ball valve 4 is wired to the PLC switch board of Measurement and Control System, and PLC switch board control electrical ball valve 4 opens or closes; Draining straight tube 3 end openings are equipped with threeway 5, draining straight tube 3 links to each other with mozzle 6 by threeway 5, the draining straight tube 3 of the collecting box 2 of same collecting box group is connected in parallel on the same mozzle 6, mozzle 6 has an angle of inclination by end to front end, the angle of inclination is 5～10 degree, mozzle 6 extends to front end, and front port is a water delivering orifice 61, puts a weigh tank 7 respectively below the water delivering orifice 61 of corresponding each bar mozzle 6;
Collecting box group frame 1 is by the angle steel welding, and electrostatic spraying forms, and castor 11 all is equipped with in the bottom, and collecting box 2 is made of plastics; Collecting box 2 physical dimension are the straight bucket of 500mm * 500mm * 400mm.
It is corresponding with the test nozzle position to adjust collecting box 2 storing positions; Electrical ball valve 4 is opened by setup program by row, also can the manual operation button, open electrical ball valve 4 with random order, and the water in the collecting box 2 are imported in the weigh tank 7.
Weighing system is made of weigh tank 7, support, LOAD CELLS, weight transmitter and electrical ball valve, and each weigh tank 7 outer wall is provided with hanger, and hanger is evenly distributed on the circumference at 120 ° at weigh tank outer wall interval, is used for fixing three LOAD CELLS are installed; LOAD CELLS is the S type, and is rack-mount with the drop hanger formula; At the bottom of the lower end of weigh tank 7 is circular arc, electrical ball valve 71 is housed on the drainpipe of center pit at the bottom of the circular arc.At the bottom of the lower end that weigh tank is 7 barrels was circular arc, be equipped with and use electrical ball valve at the freeing port place at the bottom of the circular arc.
Weigh tank 7 volume 60L.Every group of standard barrel weigh tank frame size of weighing is 500mm * 700mm * 900mm, and the bucket 7 of weighing is welded by stainless-steel tube, and the manger board of plastic material is equipped with at its top, and it mainly acts on is that protection weighs that anti-sealing is splashed into the bucket of weighing in parts and the test; Horn ring all is equipped with in its bottom, and is removable.
LOAD CELLS is passed to Measurement and Control System by weight transmitter output 4mA-20mA current signal;
The weight signal of the LOAD CELLS collection of weighing system is sent to weight transmitter, be converted to the 4-20mA simulating signal through weight transmitter, be sent to analog quantity load module SM331 input port again, data handled by the ready-made program in the CPU module CPU 314.
Compare with domestic and international same device, this device has adaptation standard extensive (as ISO6182, FM2008, GB5135-1993, GB5135.1, GB5135.3, GB5135.9, GA33-1992 etc.), can write down automatically, prints automatically and test parameter, test unit is all detachable, removable, the test unit working stability, characteristics such as bulk testing precision height.
According to the above description, can realize the solution of the present invention in conjunction with art technology.
Claims (7)
1. watering distribution performance proving installation, comprise Measurement and Control System, water system, water gathering system and weighing system, it is characterized in that, described Measurement and Control System is made up of host computer, PLC switch board and printer, comprise PLC modular unit and the electric wiring that connects and composes by contactor, electrothermal relay, auxiliary reclay in the PLC switch board, on the PLC switch board switch is housed, is used to switch manual and automatic running status; The PLC modular unit comprises CPU module, power module, digital quantity input module, digital quantity output module and analog quantity load module, and the PLC switch board is connected with electrical equipment with the measurement mechanism of water system, water gathering system, weighing system respectively; When PLC switch board switch switched to automatic running status: the PLC switch board was by the PLC programmed control field apparatus of operation PLC modular unit prepackage, realize measurement, collection, monitoring and the processing of watering distributed data, the configuration software that operates on the host computer is communicated by letter with the PLC modular unit by CP 5611 cards; Operation host computer configuration software control window is realized the automatic control to the electrical ball valve in the electrically operated valve in the water system pipes, water gathering system and the weighing system, and by configuration software automatically generated data form; Described water system mainly is made up of water pump assembly, movable furred ceiling, trunk pipeline, branch line, discharge pipe line, flowmeter, pressure transducer, electrically operated valve, hand valve; Movable furred ceiling is adjustable apart from ground 2.8m-7m, adjusts distance between the collecting box of movable furred ceiling and water gathering system by controlling movable furred ceiling lifting; The test set water area is: 4.0m * 4.0m+2.5m * 3.0m; The supply line that configuration is made up of trunk pipeline and branch line on the movable furred ceiling, the branch line end is provided with spray-head interface, and spray-head interface is used to connect sprinkler tip, waterfog head, ESFR shower nozzle, EC shower nozzle and the quick shower nozzle of low pressure; Flowmeter, pressure transducer are installed on the trunk pipeline, and electrically operated valve, hand valve are installed on the branch line; Spray-head interface is distributed on the movable furred ceiling by requirement of experiment; The curtage signal of flowmeter, pressure transducer sends Measurement and Control System to; Described water gathering system comprises group frame (1) and collecting box (2), some collecting boxs (2) is installed in group frame (1) goes up composition collecting box array; Wherein some collecting boxs (2) of vertically arranging form one group of collecting box group, some collecting box groups are laid side by side and are formed the collecting box array, collecting box (2) is suitable for reading to be rectangular aperture, the center is for there being osculum at the bottom of the box, the vertical draining straight tube (3) that connects of osculum at the bottom of each collecting box (2) box, draining straight tube (3) is gone up three the two moving ball valves (4) of energising is installed, the control terminal of electrical ball valve (4) is wired to the PLC switch board of Measurement and Control System, and PLC switch board control electrical ball valve (4) opens or closes; Draining straight tube (3) end opening is equipped with threeway (5), draining straight tube (3) links to each other with mozzle (6) by threeway (5), the draining straight tube (3) of the collecting box of same collecting box group (2) is connected in parallel on the same mozzle (6), mozzle (6) has an angle of inclination by end to front end, the angle of inclination is 5～10 degree, mozzle (6) extends to front end, and front port is water delivering orifice (61), puts a weigh tank (7) respectively below the water delivering orifice (61) of corresponding each bar mozzle (6); Described weighing system is made of weigh tank (7), support, LOAD CELLS, weight transmitter and electrical ball valve, each weigh tank (7) outer wall is provided with hanger, hanger is evenly distributed on the circumference at 120 ° at weigh tank outer wall interval, is used for fixing three LOAD CELLS are installed; LOAD CELLS is the S type, and is rack-mount with the drop hanger formula; At the bottom of the lower end of weigh tank (7) is circular arc, electrical ball valve (71) is housed on the drainpipe of center pit at the bottom of the circular arc.
2. watering distribution performance proving installation as claimed in claim 1, it is characterized in that, described PLC modular unit adopts Programmable Logic Controller S7-300, and S7-300 comprises CPU module CPU 314, analog quantity load module SM331, digital quantity input module SM321 and digital quantity output module SM322; By the communication interface on the CPU module CPU 314, the CP 5611 that connects in the host computer with communication cable blocks; Programmable Logic Controller S7-300 is communicated by letter with host computer.
3. watering distribution performance proving installation as claimed in claim 1, it is characterized in that, the weight signal of the LOAD CELLS collection of weighing system is sent to weight transmitter, be converted to the 4-20mA simulating signal through weight transmitter, be sent to analog quantity load module SM331 input port again, data handled by the ready-made program in the CPU module CPU 314.
4. watering distribution performance proving installation as claimed in claim 1, it is characterized in that, host computer is installed the MCGS configuration software, editor and operation MCGS configuration software, configuration software is realized the screen window Monitoring and Controlling, water distribution technology picture and test operation picture show with numeral, bar graph mode respectively, by MCGS configuration software automatic report generation.
5. watering distribution performance proving installation as claimed in claim 1 is characterized in that, group frame (1) is by the angle steel welding, and electrostatic spraying forms, and castor all is equipped with in the bottom.
6. watering distribution performance proving installation as claimed in claim 1 is characterized in that collecting box (2) is made of plastics.
7. watering distribution performance proving installation as claimed in claim 1 is characterized in that weigh tank (7) is welded by stainless-steel tube, and horn ring all is equipped with in its bottom of manger board that plastic material is equipped with at its top.
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Application publication date: 20110525 |