CN206847694U - Pump sump elbow of pipeline differential pressure measuring installation - Google Patents

Abstract

Pump sump elbow of pipeline differential pressure measuring installation, the flow that passes through of water pump is calculated using pump sump elbow of pipeline differential pressure measurement value, fund input is few, needs that tester is few, technology is relatively simple, test and calculating process are relatively simple, measuring accuracy meets to require.When measuring side pressure difference inside and outside pump sump elbow of pipeline, two of elbow difference gauge effective differential pressure measurement connection flexible plastic pipelines are connected with inner side of elbow and outside measurement point short tube respectively, suction line inner side of elbow and outside pressure difference h are measured during water pump operation, the flow that water pump passes through is calculated by pressure difference h.When measuring inner side of elbow and outside pressure difference h, differential pressure value h is smaller sometimes, will have influence on measurement accuracy, and the flow that the water pump for influenceing to calculate passes through, and can improve measurement accuracy by the method that the aspirating hole at the top of elbow difference gauge is outwards evacuated.

Description

Pump sump elbow of pipeline differential pressure measuring installation

1. technical field

A kind of pump sump elbow of pipeline differential pressure measuring installation is the utility model is related to, especially pump sump elbow of pipeline is poor Pressure measured value is to calculate necessary requirement of the water pump by flow.

2. background technology

Flow when being required for testing pump working in pumping plant daily management and pumping plant test, test the side of pump capacity Method is a lot, and various methods have its corresponding use occasion and scope, and the method having needs what is put into when testing flow Fund, equipment and manpower are more, and test and calculating process are more complicated, are relatively adapted to the daily management and test of large pumping station.And For small and medium-sized pumping station, particularly small pumping station because administration fee is few, the administrative staff of outfit are also few, the level of pumping plant management It is relatively low, while the technical force being equipped with is relatively weak.Therefore, for small pumping station should use infusion of financial resources less, using equipment it is few, Input manpower is few, required technology meets pumping plant test request, test and the better simply pumping plant of calculating process compared with simple, measuring accuracy The method of flow when testing pump working in daily management and test.

When passing through the elbow on inlet pipeline using current for small pumping station, in pressure caused by inner side of elbow and outside Difference calculates the flow that water pump passes through, and is that a kind of fund input is few, the tester that needs is few, technology is relatively simple, test and meter A kind of method that calculation process is relatively simple, measuring accuracy satisfaction requires.

3. the content of the invention

When passing through the elbow on suction line using current for small pumping station, in pressure caused by inner side of elbow and outside Difference calculates the flow that water pump passes through, and is that a kind of fund input is few, the tester that needs is few, technology is relatively simple, test and meter A kind of method that calculation process is relatively simple, measuring accuracy satisfaction requires.

When measuring pump sump elbow of pipeline inner side and outer side pressure difference, by two effective differential pressures of elbow difference gauge (1) Measurement connection flexible plastic pipeline (10) is connected with measurement point short tube (9) on the outside of inner side of elbow measurement point short tube (6) and elbow respectively, Pump sump elbow of pipeline inner side and outer side pressure difference h is measured during water pump operation, passes through inner side of elbow and outside pressure difference h Calculate the flow that water pump passes through.When measuring inner side of elbow and outside pressure difference h, differential pressure value h is smaller sometimes, will have influence on survey Accuracy of measurement, and the flow that the water pump for influenceing to calculate passes through, at this moment can outwards be taken out by the aspirating hole at the top of elbow difference gauge (1) The method of gas improves measurement accuracy.See Figure of description.

The beneficial effects of the utility model are that pump sump elbow of pipeline differential pressure measuring installation simple structure, price are low, behaviour It is higher to make simplicity, measuring accuracy.

4. brief description of the drawings

Fig. 1 is pump sump elbow of pipeline differential pressure measuring installation figure, below in conjunction with the accompanying drawings 1 and embodiment to the utility model Further illustrate.1. elbow difference gauge in Fig. 1,2. pump sump pipelines, 3. connection pump sump pipelines and unit fixed on water pump suction Eccentric gradient tube, 4. water pumps, 5. water pump water outlet pipelines, 6. inner side of elbow measurement point short tubes, the 7. water-inlet horn mouths with filter screen, 8. Intake pool, measurement point short tube on the outside of 9. elbows, 10. differential pressure measurements connection flexible plastic pipeline.

5. embodiment

When measuring pump sump elbow of pipeline inner side and outer side pressure difference, by two effective differential pressure measurements of elbow difference gauge Connection flexible plastic pipeline is connected with measurement point short tube on the outside of inner side of elbow measurement point short tube and elbow respectively, i.e., directly surveys differential pressure Amount connection flexible plastic pipeline, which is inserted directly on the outside of two branch pipes and inner side of elbow measurement point short tube and elbow of elbow difference gauge, to be measured Point short tube.Pump sump elbow of pipeline inner side and outer side pressure difference h is measured during water pump operation, passes through inner side of elbow and outside pressure difference Value h can calculate the flow that water pump passes through.When measuring inner side of elbow and outside pressure difference h, differential pressure value h is smaller sometimes, will Measurement accuracy is had influence on, and the flow that the water pump for influenceing to calculate passes through, it at this moment can pass through the aspirating hole at the top of elbow difference gauge The method being outwards evacuated improves measurement accuracy.

Elbow difference gauge is made of the glass tube with Measurement scales or hard transparent plastic pipe, and branch pipe diameter is in 10~20mm In the range of, be welded respectively at inner side of elbow and outside measuring point be connected with differential pressure measurement flexible plastic pipeline connection connection it is short Pipe, short tube diameter are identical with the glass tube or rigid plastics pipe diameter of elbow difference gauge.For ease of measurement inner side of elbow and outside Pressure difference h, elbow difference gauge should be fixed on the riser being arranged near water feeding of water pump elbow of pipeline.

Claims (1)

1. a kind of pump sump elbow of pipeline differential pressure measuring installation, curved by elbow difference gauge, differential pressure measurement connection flexible plastic pipeline Head inner side and outer side measurement point short tube composition, it is characterized in that：Two effective differential pressure measurement connection flexible plastic tubes of elbow difference gauge Road is connected with inner side of elbow and outside measurement point short tube respectively.