CN2307283Y

CN2307283Y - Displacement antijam Roots type flowmeter

Info

Publication number: CN2307283Y
Application number: CN 96245402
Authority: CN
Inventors: 杜召景
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-26
Filing date: 1996-10-26
Publication date: 1999-02-10
Anticipated expiration: 2006-10-26

Abstract

The utility model relates to a flow meter which can measure the flow comprising silt liquid. The utility model is characterized in that a cavity movable plate 9 is additionally arranged between a measuring room housing 10 and a roots rotor 8 of a common roots type flowmeter. The inner end of a supporting bearing 5 is additionally provided with a filtering oil inlet 14, and the outer end is additionally provided with a sealing member 15, to realize the function that the silt in the liquid can go through between the cavity movable plate 9 and the roots rotor 8 fluently to prevent the roots rotor 8 from jamming and damaging and to ensure that the supporting bearing 5 has no wear, so as to ensure the normal measurement proceeding.

Description

Positive displacement anti-sticking Roots type flowmeter

The utility model belongs to a kind of positive displacement liquid flowmeter.

Contain the flow measurement of silt particle fluid at present, particularly the workload of the flow measurement that contains silt particle liquid in the oilfield exploitation industry is very big, and is also more and more higher to the requirement of the technical feature of its measuring equipment.Existing positive displacement liquid measuring instrument is quite a few, as ellipse garden gear meter, measurement chamber is interior with a pair of ellipse garden gearing mesh, under the fluid pressure effect, promoting ellipse garden gear rotates, but its shortcoming is to contain the silt particle particle in the liquid to enter and be easy to stuck ellipse garden gear in the gear, makes the instrument measurement that can not run well; Common for another example Roots (waist wheel) flowmeter, a pair of waist wheel is housed each other at an angle of 90 in the measurement chamber, locate with synchromesh gear, the waist wheel has slight clearance with the interior wall of surveying of measuring room, when liquid includes the silt particle particle size greater than this gap, enters stuck waist wheel in the measuring room, can not run well, when high rotating speed entered hard particles, the waist wheel was easy to broken, therefore can not be widely used in reality equally; Be exactly because the bearing seal of common discharge meter is bad in addition, the silt particle in the liquid is entered in the bearing, cause the wearing and tearing of bearing, thereby cause that precision reduces, and damages the consequence of other member.

In sum, anxious the treating of flow meter that contains silt particle liquid further improved and improved.

The purpose of this utility model provide a kind of from structure guarantee silt particle contained the liquid can stuck waist wheel rotor, positive displacement anti-sticking Roots (waist wheel) flowmeter of the spring bearing that can not wear and tear.

Major technique content of the present utility model is to comprise common Roots (waist wheel) flowmeter, it is characterized in that between measuring room shell and waist wheel rotor, setting up a pair of cavity portable plate, adopt elastic support to support between this cavity portable plate and the measuring room shell, waist wheel armature spindle adopts inner band to filter the bearings of oil supply hole, the sealing of outer end band seal.

Principle of work of the present utility model is that the silt particle in the fluid to be measured is when entering measurement chamber, if the silt particle particle size is during greater than the gap between waist wheel rotor and the cavity portable plate inwall, the elastomeric anchorage force that the cavity portable plate overcomes the cavity portable plate makes its gap adapt to the size of silt particle particle automatically, make the silt particle particle smoothly by this device, thereby this device is not stuck, also makes waist wheel rotor etc. not broken; Because the inner of the spring bearing of waist wheel armature spindle has the oil strain oil supply hole, the outer end has seal, makes bearing promptly obtain lubricating and does not make its leakage again, has prolonged serviceable life and has improved measuring accuracy.

When advantage of the present utility model is to measure and contains silt particle liquid and particularly contain silt particle liquid in the oilfield exploitation industry, prevented that waist wheel rotor is stuck or is broken, and prevented bearing wear and leakage that what guaranteed to measure normally carries out and improved measuring accuracy.

Fig. 1 is a direction view of the utility model structure;

Fig. 2 filters the structural drawing of oil supply hole and outer end seal for the utility model bearing;

Fig. 3 is another direction view of the utility model structure.

Provide embodiment of the present utility model as follows in conjunction with the accompanying drawings:

The utility model such as Fig. 1, Fig. 2, shown in Figure 3 mainly are made of counter 1, loam cake 2, magnetic coupling 3, a pair of transmission gear 4, bearing 5, measuring room upper and lower cover 6, shell 7, a pair of waist wheel rotor 8, a pair of cavity portable plate 9, measuring room shell 10, a pair of synchromesh gear 11, lower cover 12, a pair of waist wheel armature spindle 13, filtration oil supply hole 14, seal 15, elastic supporting member for supporting optical member 16.Wherein, measuring room shell 10 is housed in the shell 7, on the both ends of the surface fixed installation measuring room of this measuring room shell 10, lower cover 6, between measuring room shell 10 and the shell 7 minim gap is arranged, two waist wheel rotors 8 are housed in the measuring room shell 10, two waist wheel armature spindles 13 are fixedly mounted in the waist wheel rotor 8, its end axis holds 5 and is supported on the measuring room, in the lower cover 6, the inner face of bearing 5 and outer face are equipped with seal 15 respectively and are filtered oil supply hole 14, two waists wheel rotor 8 guarantees parallel, one end of waist wheel armature spindle 13 is equipped with synchromesh gear 11, the other end of one of them waist wheel armature spindle 13 is installed transmission gear 4, be installed on the magnetic coupling 3 with another transmission gear 4 of its engagement, magnetic coupling 3 is connected with counter 1 and is fixedly mounted on the loam cake 2, the lid 2 and lower cover 12 be fixedly mounted on shell 7 on, the bottom, a pair of synchromesh gear 11 guarantees between two waists wheel rotors 8 at an angle of 90, symmetry is installed a pair of cavity portable plate 9 in the measuring room shell 10, support by elastic support 16 between measuring room shell 10 and the cavity portable plate 9, between the outside of cavity portable plate 9 and measuring room shell 10 madial walls certain clearance is arranged, to guarantee certain amount of movement laterally, elastic support 16 guarantees that cavity portable plate 9 resets, there is slight clearance cavity portable plate 9 inboards with waist wheel rotor 8 long axis direction peaks, locate in the groove of cavity portable plate 9 positions by its end insertion measuring room shell 10.

The cross section of cavity portable plate 9 is half garden tubular, and elastic support 16 can adopt elasticity plastics, rubber, spring etc. preferably; Filter oil supply hole 14 and can adopt strainability such as oil strain felt material preferably.

Claims

1, a kind of positive displacement anti-sticking Roots type flowmeter, comprise common Roots (waist wheel) flowmeter, it is characterized in that setting up a pair of cavity portable plate between measuring room shell and the waist wheel rotor, adopt elastic support to support between cavity portable plate and the measuring room shell, waist wheel armature spindle adopts inner band to filter the bearings of oil supply hole outer end band seal sealing.