CN103292877A - On-line testing method and device for throw-in type liquid level transmitter - Google Patents

On-line testing method and device for throw-in type liquid level transmitter Download PDF

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Publication number
CN103292877A
CN103292877A CN2013102517709A CN201310251770A CN103292877A CN 103292877 A CN103292877 A CN 103292877A CN 2013102517709 A CN2013102517709 A CN 2013102517709A CN 201310251770 A CN201310251770 A CN 201310251770A CN 103292877 A CN103292877 A CN 103292877A
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China
Prior art keywords
angle valve
liquid level
throw
rubber sleeve
type fluid
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Application number
CN2013102517709A
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Chinese (zh)
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CN103292877B (en
Inventor
杨震威
李辉
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Conway Communication Technology Co., Ltd
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Shandong Conwell Communication Technology Co Ltd
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Priority to CN201310251770.9A priority Critical patent/CN103292877B/en
Publication of CN103292877A publication Critical patent/CN103292877A/en
Application granted granted Critical
Publication of CN103292877B publication Critical patent/CN103292877B/en
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Abstract

The invention particularly discloses an on-line testing method and device for a throw-in type liquid level transmitter. The device comprises an upper end angle valve, a liquid level display silicone hose, the throw-in type liquid level transmitter, a bottom angle valve, a base and a support. The base is arranged at the bottom of the support. The base is transversely connected with the bottom angle valve. The bottom angle valve is connected with the upper end angle valve through the liquid level display silicone hose. The base is longitudinally connected with a rubber sleeve. The top of the rubber sleeve is connected with a probe of the throw-in type liquid level transmitter. The rubber sleeve, the base, the bottom angle valve, the upper end angle valve and the liquid level display silicone hose are communicated. The on-line testing method and device has the advantages that by the implementation of the method and device, environment of different liquid level depths can be simulated, and the on-line function of the throw-in type liquid level transmitter can be detected. The device is simple in structure, convenient to carry and flexible in using method.

Description

A kind of on-line testing method and device thereof of throw-in type fluid level transmitter
Technical field
The present invention relates to a kind of throw-in type fluid level transmitter field tests, relate in particular to a kind of on-line testing method and device thereof of throw-in type fluid level transmitter.
Background technology
Along with sustained economic growth, city size constantly enlarge, the urban distribution network fast development, the throw-in type fluid level transmitter is widely used in increasing place such as water factory, sewage treatment plant, urban water supply, electric power tunnel, need carry out the periodic inspection test to already installed throw-in type fluid level transmitter.Traditional proving installation volume is bigger, is subjected to space constraint, can't utilize traditional proving installation to detect.
In the time of in the called putting-into-type liquid level meter transmitter has been installed in the cable pipe trench, owing to be subjected to the influence of factors such as slit between the cable, device power supply (DPS), angle iron bracket space, traditional pick-up unit can't satisfy request for utilization.
Summary of the invention
In order to solve the shortcoming that prior art exists, the invention provides a kind of on-line testing method and device thereof of throw-in type fluid level transmitter, by the enforcement of these apparatus and method, can simulate the environment of the different liquid level degree of depth, come the function of online detection throw-in type fluid level transmitter.This apparatus structure is easy, is easy to carry, using method is flexible.
The technical solution used in the present invention is as follows:
A kind of online testing device of throw-in type fluid level transmitter comprises the upper end angle valve, and liquid level shows silica gel hose, throw-in type fluid level transmitter, bottom angle valve, base, support; Be provided with base in described frame bottom, base laterally connects a bottom angle valve, the bottom angle valve shows that by liquid level silica gel hose is connected with the upper end angle valve, base vertically connects a rubber sleeve, the top of rubber sleeve connects a throw-in type fluid level transmitter probe, described rubber sleeve, base, bottom angle valve, upper end angle valve, liquid level show that silica gel hose inside communicates.
Described support is " L " type support.
Described upper end angle valve and bottom angle valve are 4 ' angle valve of standard.
Described base is cup dolly.
Described rubber sleeve is a hollow sleeve, and the top links to each other with the throw-in type fluid level transmitter, and the bottom links to each other with the cup dolly of proving installation.
Described support vertical portion is divided into pipe, and it is marked with scale.
A kind of on-line testing method of throw-in type fluid level transmitter may further comprise the steps:
Step 1: with proving installation cup dolly horizontal positioned, make liquid level show that the upper end angle valve of silica gel hose is higher than 1-2 centimetre of rubber sleeve upper end;
Step 2: open bottom angle valve and upper end angle valve, water filling in the rubber sleeve when treating water near the rubber running-on, stops water filling;
Step 3: stop after the water filling, close upper end angle valve and bottom angle valve;
Step 4: throw-in type fluid level transmitter probe is taken out in the cable space, and will pop one's head in screws in the about 30mm length of rubber sleeve;
Step 5: the test fixture that will assemble probe is put on the flat board of frame bottom;
Step 6: open upper end angle valve and bottom angle valve, liquid level is shown that silica gel hose near the support pipe, needs by test, change liquid level and show the silica gel hose height, make liquid level in the liquid level demonstration silica gel hose press close to the different scales of support pipe.Throw-in type fluid level transmitter probe reports numerical value automatically according to the pressure of receiving.
Test philosophy is as follows:
When the throw-in type fluid level transmitter was put in the fluid to be measured a certain degree of depth, sensor was met the pressure formula that liquid level is subjected to and is:
Ρ=ρ.g.h+Po
In the formula: P: transmitter is met the liquid level pressure;
ρ: fluid to be measured density;
G: local gravitational acceleration;
Po: atmospheric pressure on the liquid level;
H: transmitter drops into the degree of depth of liquid.
Simultaneously, by the air guide stainless steel pressure of liquid is incorporated into the malleation chamber of sensor, again the atmospheric pressure Po on the liquid level is linked to each other with the negative pressure cavity of sensor, with the Po at the offset sensor back side, make sensor record pressure to be: ρ .g.h, obviously, by measuring pressure P, can obtain liquid level degree of depth h.
Upper end angle valve and bottom angle valve are 4 ' angle valve of standard.During water filling, open angle valve in the proving installation, be used for getting rid of the air in the proving installation cavity.After water filling finishes, close angle valve, stop the water in the test proving installation to flow out.When testing, open angle valve, the surface level of proving installation upper end is contacted with air, accept atmospheric pressure.After test finishes, close angle valve, the water in the device can't be flowed out.
Liquid level shows that silica gel hose links to each other with the angle valve at proving installation two ends respectively, is used for the height of simulation liquid level.
The throw-in type fluid level transmitter be based on the principle that is directly proportional with this liquid height of the fluid pressure of surveying, adopt the piezoresistive effect of diffuse si or ceramic sensitive element, static pressure is changed into electric signal.Through temperature compensation and linearity correction.Convert the output of 4-20mADC normalized current signal to.The Sensor section of throw-in type fluid level transmitter can directly be put in the liquid.
Support pipe position indicates scale, is used for laying the proving installation main part, and provides one to test pedestal stably for proving installation.
Beneficial effect of the present invention: by the enforcement of these apparatus and method, can simulate the environment of the different liquid level degree of depth, detect the online function of throw-in type fluid level transmitter.This apparatus structure is easy, is easy to carry, using method is flexible.
Description of drawings
Fig. 1 is that the proving installation of throw-in type fluid level transmitter is formed synoptic diagram;
Among the figure, 1. upper end angle valve, 2. liquid level shows silica gel hose, 3. throw-in type fluid level transmitter, 4. rubber sleeve, 5. cup dolly, 6. bottom angle valve, 7. support.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, the proving installation of described a kind of throw-in type fluid level transmitter comprises upper end angle valve 1, and liquid level shows silica gel hose 2, throw-in type fluid level transmitter 3, rubber sleeve 4, cup dolly 5, bottom angle valve 6, support 7.
Wherein upper end angle valve 1 and bottom angle valve 6 are 4 ' angle valve of standard.During water filling, open two angle valves in the proving installation, be used for getting rid of the air in the proving installation cavity.After water filling finishes, close two angle valves, stop the water in the test proving installation to flow out.When testing, open two angle valves, the surface level of proving installation upper end is contacted with air, accept atmospheric pressure.After test finishes, close two angle valves, the water in the device can't be flowed out.
Liquid level shows that silica gel hose 2 links to each other with the angle valve at proving installation two ends respectively, is used for the height of simulation liquid level.
Throw-in type fluid level transmitter 3 be based on the principle that is directly proportional with this liquid height of the fluid pressure of surveying, adopt the piezoresistive effect of diffuse si or ceramic sensitive element, static pressure is changed into electric signal.Through temperature compensation and linearity correction.Convert the output of 4-20mADC normalized current signal to.The Sensor section of throw-in type fluid level transmitter can directly be put in the liquid.
Rubber sleeve 4 inside are empty, and the top links to each other with throw-in type fluid level transmitter 3 probes, and the bottom links to each other with the cup dolly 5 of proving installation.
Support 7 pipe positions indicate scale, are used for laying the proving installation main part, and provide one to test pedestal stably for proving installation.
Cup dolly 5 inside are empty, are used for connecting proving installation bottom angle valve and rubber sleeve 4.
The throw-in type fluid level transmitter carries out method of testing: with proving installation cup dolly 5 horizontal positioned, make liquid level show that the upper end angle valve 1 of silica gel hose 2 is higher than rubber sleeve 4 upper ends, open upper end angle valve 1, bottom angle valve 6, to rubber sleeve 4 interior water fillings, when treating that water level is near 4 mouthfuls of upper ends of rubber sleeve in the rubber sleeve 4, stop water filling, close upper end angle valve 1, bottom angle valve 6 simultaneously.Throw-in type fluid level transmitter 3 probes are taken out in the cable space, screw in rubber sleeve 4 about 30mm length.The test fixture that assembles probe is put on the flat board of support 7, makes scale vertically press close to base side wall, and placement perpendicular to the ground.Open upper end angle valve 1 and bottom angle valve 6, liquid level is shown that silica gel hose 2 is near the pipe of support 7.Need by test, change the height that liquid level shows silica gel hose 2, make liquid level show that the liquid level in the silica gel hose 2 presses close to the different scales of support 7 pipes.Throw-in type fluid level transmitter probe reports numerical value automatically according to the pressure of receiving.
After testing a throw-in type fluid level transmitter 3 probes, repeat above step, test next throw-in type fluid level transmitter 3 probes.
Though above-mentionedly by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make still in protection scope of the present invention.

Claims (7)

1. the online testing device of a throw-in type fluid level transmitter is characterized in that: comprise the upper end angle valve, liquid level demonstration silica gel hose, throw-in type fluid level transmitter, bottom angle valve, base, support; Be provided with base in described frame bottom, base laterally connects a bottom angle valve, the bottom angle valve shows that by liquid level silica gel hose is connected with the upper end angle valve, base vertically connects a rubber sleeve, the top of rubber sleeve connects a throw-in type fluid level transmitter probe, described rubber sleeve, base, bottom angle valve, upper end angle valve, liquid level show that silica gel hose inside communicates.
2. proving installation as claimed in claim 1, it is characterized in that: described support is " L " type support.
3. proving installation as claimed in claim 1, it is characterized in that: described upper end angle valve and bottom angle valve are 4 ' angle valve of standard.
4. proving installation as claimed in claim 1, it is characterized in that: described base is cup dolly.
5. proving installation as claimed in claim 4, it is characterized in that: described rubber sleeve is a hollow sleeve, and the top links to each other with the throw-in type fluid level transmitter, and the bottom links to each other with the cup dolly of proving installation.
6. proving installation as claimed in claim 1, it is characterized in that: described support vertical portion is divided into pipe, and it is marked with scale.
7. the on-line testing method of a throw-in type fluid level transmitter is characterized in that, may further comprise the steps:
Step 1: with proving installation cup dolly horizontal positioned, make liquid level show that the upper end angle valve of silica gel hose is higher than 1-2 centimetre of rubber sleeve upper end;
Step 2: open bottom angle valve and upper end angle valve, water filling in the rubber sleeve when treating water near the rubber running-on, stops water filling;
Step 3: stop after the water filling, close upper end angle valve and bottom angle valve;
Step 4: throw-in type fluid level transmitter probe is taken out in the cable space, and will pop one's head in screws in the about 30mm length of rubber sleeve;
Step 5: the test fixture that will assemble probe is put on the flat board of frame bottom;
Step 6: open upper end angle valve and bottom angle valve, liquid level is shown that silica gel hose near the support pipe, needs by test, change liquid level and show the silica gel hose height, make liquid level in the liquid level demonstration silica gel hose press close to the different scales of support pipe; Throw-in type fluid level transmitter probe reports numerical value automatically according to the pressure of receiving.
CN201310251770.9A 2013-06-21 2013-06-21 A kind of on-line testing method of throw-in type liquid transmitter and device thereof Active CN103292877B (en)

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Application Number Priority Date Filing Date Title
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114814A1 (en) * 1991-05-07 1992-11-12 Incatronic Phoenix Messtechnik Function testing device for container filling level indicator - uses test vol of filling material displaced into contact with level indicator
CN201653647U (en) * 2009-05-13 2010-11-24 广州中船龙穴造船有限公司 Synthetic test stand
CN202304963U (en) * 2011-10-26 2012-07-04 常州博朗低温设备有限公司 Online testing device for differential-pressure-type liquid level meter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507131C2 (en) * 1985-02-28 1989-08-03 Rlt Ruhrtal Labor-Technik Vertriebs Gmbh, 5760 Arnsberg, De
CN201000354Y (en) * 2006-12-29 2008-01-02 中国南车集团成都机车车辆厂 Liquid level induction block tester
CN203011493U (en) * 2012-11-20 2013-06-19 甘肃酒钢集团宏兴钢铁股份有限公司 Throw-in type static liquid level transducer calibration device
CN102980637B (en) * 2012-11-26 2015-08-05 合肥邦立电子股份有限公司 A kind of liquid level sensor liquid level demarcates pick-up unit and method
CN203310488U (en) * 2013-06-21 2013-11-27 山东康威通信技术股份有限公司 On-line testing device for throw-in type liquid level transmitter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114814A1 (en) * 1991-05-07 1992-11-12 Incatronic Phoenix Messtechnik Function testing device for container filling level indicator - uses test vol of filling material displaced into contact with level indicator
CN201653647U (en) * 2009-05-13 2010-11-24 广州中船龙穴造船有限公司 Synthetic test stand
CN202304963U (en) * 2011-10-26 2012-07-04 常州博朗低温设备有限公司 Online testing device for differential-pressure-type liquid level meter

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Address after: 250101 A203, block F, entrepreneurship square, Qilu Software Park, No.1 Shunhua Road, high tech Development Zone, Jinan City, Shandong Province

Patentee after: Conway Communication Technology Co., Ltd

Address before: 250101 Qilu Software Park, No. 1 Shunhua Road, Jinan High-tech Development Zone, Shandong Province, A 203

Patentee before: SHANDONG KANGWEI COMMUNICATION TECHNOLOGY Co.,Ltd.

CP03 Change of name, title or address