CN204924370U - Inhale following formula liquid level measurement device - Google Patents

Inhale following formula liquid level measurement device Download PDF

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Publication number
CN204924370U
CN204924370U CN201520661189.9U CN201520661189U CN204924370U CN 204924370 U CN204924370 U CN 204924370U CN 201520661189 U CN201520661189 U CN 201520661189U CN 204924370 U CN204924370 U CN 204924370U
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China
Prior art keywords
valve
needle
ground
cover plate
liquid level
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CN201520661189.9U
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Chinese (zh)
Inventor
贾瑞旗
何成连
蒋玉华
张剑雄
张智彬
张弋扬
闫宇
徐勤
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China Water Resources Beifang Investigation Design and Research Co Ltd
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China Water Resources Beifang Investigation Design and Research Co Ltd
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Abstract

The utility model discloses an inhale following formula liquid level measurement device, including differential pressure transmitter, two gas cylinders, vacuum pump, 4 needle type valves, a breather valve and two long and thin transparent leading water pipes, differential pressure transmitter's height, low -pressure end are connected with two gas cylinder lower part one end through three way connection respectively, and long and thin transparent leading water pipe is connected through needle type valve to three way connection's the other end, needle type valve is connected on gas cylinder upper portion, the during operation, and the vacuum pump is connected with gas cylinder upper portion needle type valve, the two gas cylinders breather valve that shares. The utility model discloses that utilizes vacuum effect inhales the liquid level measurement device, can accomplish the measurement to flood peak, lift under the condition that does not increase power station (pump station) water conservancy measurement station for the reliable and simple and accurate reliable that becomes is tested to on -the -spot flood peak, lift, has improved testing speed. Pump station or power station to not possessing the lift measurement station are important very much.

Description

One sucts formula liquid level emasuring device
Technical field
The utility model belongs to Hydraulic and Hydro-Power Engineering technical testing field, the especially a kind of formula that sucts liquid level emasuring device utilizing vacuum action.
Background technology
Some run small hydropower station for many years and farmland, water conservancy, irrigation pumping station equipment list transformation, reconstruction plan in recent years gradually.And these small hydropower stations or pumping plant are owing to building comparatively early, most or lack hydraulic measurement facility, upstream and downstream water level cannot be measured, or altitude figures is lost, for understand fully the unit performance in these power stations or pumping plant and change, extend before and after contrast, need performance test be carried out.Thus need to study some necessary parameter measurement equipments such as head, lift test to achieve the goal.
Utility model content
Technical problem to be solved in the utility model is, provides a kind of formula that sucts liquid level emasuring device utilizing vacuum action.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: one sucts formula liquid level emasuring device, comprise differential pressure transmitter, two gass collecting jar with ground-on cover plate, vacuum pump, 4 needle-like valves, a breather valve and two elongated clear aqueducts, the high and low pressure side of described differential pressure transmitter is connected with two gas collecting jar with ground-on cover plate lower end thereof respectively by three-way connection, and the other end of three-way connection connects elongated clear aqueduct through needle-like valve; Gas collecting jar with ground-on cover plate top connects needle-like valve, and during work, vacuum pump is connected with gas collecting jar with ground-on cover plate top needle-like valve, and two gass collecting jar with ground-on cover plate share a breather valve.
Described elongated clear aqueduct is heavy wall elongated clear aqueduct.
The beneficial effects of the utility model are: what utilize vacuum action sucts liquid level emasuring device, the measurement to head, lift can be completed when not increasing power station (pumping plant) waterpower measuring point, on-the-spot head, lift are tested become simple and accurately and reliably, improve test speed.For the pumping plant or the power station particular importance that do not possess lift measuring point.
Accompanying drawing explanation
Fig. 1 is the structural representation sucting formula liquid level emasuring device of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 1, of the present utility modelly suct formula liquid level emasuring device, comprise differential pressure transmitter, two gass collecting jar with ground-on cover plate, vacuum pump, 4 needle-like valves, a breather valve and two elongated clear aqueducts, the high and low pressure side of described differential pressure transmitter 1 is connected with two gass collecting jar with ground-on cover plate 2,3 lower end thereof respectively by three-way connection, and the other end of three-way connection connects elongated clear aqueduct 10,9 through needle-like valve 5,7; Gas collecting jar with ground-on cover plate top connects needle-like valve 4,6, and during work, vacuum pump 8 is connected with gas collecting jar with ground-on cover plate top needle-like valve 4,6, and two gass collecting jar with ground-on cover plate share a breather valve 11.
Described elongated clear aqueduct is heavy wall elongated clear aqueduct.
During test, close breather valve 11, open the needle-like valve 4,5 at gas collecting jar with ground-on cover plate 2 two ends, vacuum pump 8 is communicated with the gas collecting jar with ground-on cover plate 2 in downstream, elongated clear aqueduct 10 accesses downstream, start vacuum pump 8 and tail water is caused gas collecting jar with ground-on cover plate 2, closure set inflator 2 two ends needle-like valve 4,5 after filling water in gas collecting jar with ground-on cover plate 2, close vacuum pump 8, same step opens the needle-like valve 6,7 at gas collecting jar with ground-on cover plate 3 two ends of upstream side, and elongated clear aqueduct 9 accesses upstream side, upper water is guided the gas collecting jar with ground-on cover plate 3 of upstream side, close needle-like valve 6,7, open breather valve 11; Then gas collecting jar with ground-on cover plate 2,3 top needle-like valve 4,6 is opened, open the vent valve of differential pressure transmitter 1 self, close after air emptying, then closure set inflator top needle-like valve 4,6, open the needle-like valve 5,7 between diversion pipeline and gas collecting jar with ground-on cover plate 2,3, such upstream and downstream liquid level accesses differential pressure transmitter simultaneously and is in same elevation, and the pressure difference signal that differential pressure transmitter obtains is upstream and downstream liquid level difference, and access computer acquisition system is measured.As needed independent measurement upstream, the change of downstream liquid level, opposite side can be accessed air, gained signal is upstream or downstream liquid level changing value.
The utility model utilizes vacuum pump, water pipe that power station (pumping plant) upstream and downstream water level is introduced differential pressure transmitter, accurately measures the method for power head (lift) and SEA LEVEL VARIATION.Be characterized in: heavy wall elongated clear aqueduct is connected to gas collecting jar with ground-on cover plate lower end behind the door through needle valve, receive in differential pressure transmitter low-pressure side by three-way valve, gas collecting jar with ground-on cover plate upper end connects another and connects needle-like valve; If air is connected in differential pressure transmitter high-pressure side, survey sensor is to liquid level (water level), and liquid level change can be measured, if power station (pumping plant) high water stage is connected in differential pressure transmitter high-pressure side, can directly measure pumping plant lift, power head.During work, open gas collecting jar with ground-on cover plate top needle-like valve, vacuum pump is utilized to bleed from gas collecting jar with ground-on cover plate upper end, water is introduced gas collecting jar with ground-on cover plate and differential pressure transmitter low-pressure side, after gas collecting jar with ground-on cover plate water is full, closes upper end needle-like valve, in like manner operates differential pressure transmitter high-pressure side, head (lift) and the Changing Pattern of power station (pumping plant) after connection, can be measured, also can connect separately low-pressure side (high-pressure side), measure the Changing Pattern of the level of tail water (upper pond level).For the small hydropower station, the pumping plant that lack head (lift) facility, can economic, convenient, the measurement of reliably and accurately carrying out head (lift) and pond (canal) water level and SEA LEVEL VARIATION.
Be arranged on the gas collecting jar with ground-on cover plate on diversion pipeline, utilize vacuum pump that water is sucked differential pressure transmitter, gas collecting jar with ground-on cover plate plays the effect of the air of separating out in concentrated pipeline, meanwhile, also plays and reduces water-level fluctuation to the impact of measurement result.Also to moisturizing in gas collecting jar with ground-on cover plate, the air getting rid of differential pressure transmitter inside can be conducive to, during use, will ensure that in gas collecting jar with ground-on cover plate, water level is higher than differential pressure transmitter diaphragm, to ensure the accuracy of test result.Be arranged on the needle-like valve at gas collecting jar with ground-on cover plate two ends, after water sucts by vacuum pump, close needle-valve to ensure to be full of water in water pipe and gas collecting jar with ground-on cover plate, prevent downstream pipe from after vacuum pump removes, occurring the phenomenon that stops, suction head 0 ~ 10m scope can be measured in theory, consider the actual ability of sucting of vacuum pump, be advisable with 0 ~ 9m scope when suggestion uses.
This device can when not increasing power station (pumping plant) infrastructure rebuilding, again burying pressure measurement pipeline underground, economical, convenient, accurately, reliably obtain head, lift parameter.
Above-described embodiment is only for illustration of technological thought of the present utility model and feature, its object is to enable those skilled in the art understand content of the present utility model and implement according to this, only can not limit the scope of the claims of the present utility model with the present embodiment, namely the equal change that the spirit that all the utility model disclose is done or modification, still drop in the scope of the claims of the present utility model.

Claims (1)

1. one kind sucts formula liquid level emasuring device, it is characterized in that, comprise differential pressure transmitter, two gass collecting jar with ground-on cover plate, vacuum pump, 4 needle-like valves, a breather valve and two elongated clear aqueducts, the high and low pressure side of described differential pressure transmitter (1) is connected with two gass collecting jar with ground-on cover plate (2,3) lower end thereof respectively by three-way connection, and the other end of three-way connection is connected elongated clear aqueduct (10,9) through the first needle-like valve (5) with the second needle-like valve (7); Gas collecting jar with ground-on cover plate top connects the 3rd needle-like valve (4) and the 4th needle-like valve (6), during work, vacuum pump (8) is connected with gas collecting jar with ground-on cover plate top the 3rd needle-like valve (4) and the 4th needle-like valve (6), and two gass collecting jar with ground-on cover plate share a breather valve (11).
CN201520661189.9U 2015-08-28 2015-08-28 Inhale following formula liquid level measurement device Active CN204924370U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520661189.9U CN204924370U (en) 2015-08-28 2015-08-28 Inhale following formula liquid level measurement device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520661189.9U CN204924370U (en) 2015-08-28 2015-08-28 Inhale following formula liquid level measurement device

Publications (1)

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CN204924370U true CN204924370U (en) 2015-12-30

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Country Status (1)

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CN (1) CN204924370U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111521244A (en) * 2020-05-27 2020-08-11 河海大学 Liquid level difference detection device and flood early warning system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111521244A (en) * 2020-05-27 2020-08-11 河海大学 Liquid level difference detection device and flood early warning system
CN111521244B (en) * 2020-05-27 2021-03-26 河海大学 Liquid level difference detection device and flood early warning system

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