CN2038624U

CN2038624U - Tube shape direct-reading type flow meter for measuring instantaneous flow-rate

Info

Publication number: CN2038624U
Application number: CN 88201020
Authority: CN
Inventors: 彭唯超; 曹道鑫; 曾慎才
Original assignee: CHONGQING INST ACADEMY OF COAL SCIENCE MINISTRY OF COAL INDUSTRY
Current assignee: CHONGQING INST ACADEMY OF COAL SCIENCE MINISTRY OF COAL INDUSTRY
Priority date: 1988-01-25
Filing date: 1988-01-25
Publication date: 1989-05-31

Abstract

The utility model discloses a tube shape direct-reading type flow meter for measuring instantaneous flow-rate, comprising a meter housing, a flow limiting cone, a piston, a spring, an inlet and outlet nut connecter and such. The piston comprises a piston lining, an indicating sheet, a piston cover and a spring seat. The tube shape direct-reading type flow meter for measuring the instantaneous flow-rate can be discretionally connected in series in the liquid pipeline. The housing of the flow meter is transparent; the graduation can be easily and directly read. The tube shape direct-reading type flow meter for measuring the instantaneous flow-rate can realize the observation of the flow-rate in the pipeline and the adjustment and control at any time, which ensures the safety production and the increasing of the product quality and the labor productivity.

Description

Tube shape direct-reading type flow meter for measuring instantaneous flow-rate

The utility model is applicable to the instantaneous delivery in the signal piping.

Detection can improve the atomizing de-dusting effect to adjust the instantaneous delivery in the pipeline in the colliery; In other industry, can guarantee fluid flow in the pipeline at any time in producing required scope, thereby continuously, stable, carry out production operation safely, guarantee product quality and raise labour productivity.

At present, though the instrument kind of instantaneous delivery is a lot of in the signal piping, aspect applicability, can't meet the needs of production.Can show instantaneous delivery and integrated flow as turbine flow transducer commonly used by integrating instrument both at home and abroad, precision height, but complex structure cost an arm and a leg, the service condition strictness; Spinner-type flowmeter is simple in structure, but volume is big, and higher installation site requirement is arranged.In recent years, it can directly be serially connected in the fluid circuit, and the direct-reading instantaneous delivery in the U.S. a kind of piping flow instrumentation instrument (in-line flow meters), but exists some restriction at aspects such as structure, installation site, use occasions.Domestic still do not have a this product.For this reason, invented tubulose direct-reading instantaneous delivery table according to the principle of thin-walled small hole stream in the fluid mechanics.

The utility model can be serially connected in the fluid flow tube road arbitrarily; Under the situation of pulse free or less pulsation, reflect the variation and the correct indication instantaneous delivery of flow rapidly.

Structure of the present utility model:

Tubulose direct-reading instantaneous delivery table (Fig. 1) is made up of import nut 1, O-ring seal 2, watchcase 3, current limliting awl 4, piston (comprising piston lining 5, indicating piece 6, piston bush 7, front spring seat 8), spring 9, rear spring seat 10, sealing gasket 11, garden dish 12, adjusting screw(rod) 13, outlet nut 14.

Characteristics of the present utility model:

1, the watchcase among Fig. 13 is made the garden tubular by water white organic glass, and there is flow scale on tube surface, garden, and indicating piece 6 is corresponding to the flow scale value on the watchcase 3, and is clear and intuitive; The two ends of watchcase 3 fit into fluid stream pipe adapter, and the thickness of watchcase wall is enough to guarantee normally work continuously under rated pressure.

2, the current limliting among Fig. 1 awl 4 is formed (Fig. 2) by four parts: post 19 is bored in water inlet 16, garden dish post 17, garden post 18, garden.On the dish post 17 of garden four mounting holes (Fig. 3) being arranged, also can make shape hole, garden or other hole shapes, can be four holes, and does not wait in five holes or six holes; Garden post 18 is transition sections, between garden dish post 17 and garden awl post 19; Garden awl post 19 has specific cone angle.Water inlet 16, garden dish post 17, garden post 18, garden awl post 19 are an identical global facility of material.Liquid stream is by water inlet 16, and four mounting holes through garden dish post 17 flow into watchcase inner carrier chamber again, promote piston and move.Garden awl post 19 is thin-walled hole (Fig. 4) the composition restriction of blade-like with the transversal section that piston serves as a contrast 5 one side centre positions.

3, spring 9 one ends contact with front spring seat 8, and the other end of spring 9 contacts with rear spring seat 10; The first decrement of spring 9 is adjusted by the adjusting screw(rod) 13 that is contained on the dish of garden.The effect of spring is to make piston two ends stress balance; When aneroid flows or cutout the time piston is in to be close on the garden dish cylinder of four mounting holes.

Principle of work of the present utility model:

1. do not have liquid-flow state: under the effect of spring 9, piston lining 5 is met the stream end and is contacted with current limliting awl 4, and flow scale is designated as 0;

2. liquid-flow state is arranged: generation pressure falls when liquid flows the restriction of forming by the garden awl post 19 and the piston lining 5 of current limliting awl 4, and the pressure differential at piston two ends forces in the plunger shaft of piston in watchcase 3 and moves; Because piston moves, spring 9 changes decrement.When flow reaches a certain value and when no longer changing, piston stress balance and on corresponding position, stopping, the displacement of piston promptly reflects the size of flow.

Advantage of the present utility model:

1, simple in structure, physical dimension is little, and the requirement of no installation site can directly be serially connected in the fluid circuit.

2, watchcase is transparent, and scale reading is concisely directly perceived.

3, in the flammable explosive gas environment, can use safely.

4, easily manufactured, cheap.

Claims

1, the utility model is a kind of tubulose direct-reading instantaneous delivery table, it is characterized in that by import nut, O-ring seal, watchcase, current limliting awl, piston, spring, rear spring seat, sealing gasket, garden dish.Adjusting screw(rod), outlet nut are formed.

2,, it is characterized in that the current limliting awl is made of water inlet, garden dish post, garden post, garden awl post by the described a kind of tubulose direct-reading instantaneous delivery table of claim 1; Garden dish post has several holes, and garden awl post has specific cone angle; Water inlet, garden dish post, garden post, garden awl post are an identical global facility of material.

3, by the described a kind of tubulose direct-reading instantaneous delivery table of claim 1, it is characterized in that piston is made of piston lining, indicating piece, piston bush, front spring seat; The transversal section that piston serves as a contrast a side centre position is blade-like thin-walled hole.

4, by the described a kind of tubulose direct-reading instantaneous delivery table of claim 1, it is characterized in that watchcase is the garden tubular that colourless transparent resin glass is made, there is flow scale on tube surface, garden, and indicating piece is corresponding to the flow scale on the watchcase.