CN102445311B - Gas-adjustable flow meter - Google Patents
Gas-adjustable flow meter Download PDFInfo
- Publication number
- CN102445311B CN102445311B CN 201010508517 CN201010508517A CN102445311B CN 102445311 B CN102445311 B CN 102445311B CN 201010508517 CN201010508517 CN 201010508517 CN 201010508517 A CN201010508517 A CN 201010508517A CN 102445311 B CN102445311 B CN 102445311B
- Authority
- CN
- China
- Prior art keywords
- mandrel
- valve body
- gas
- cylinder
- axle sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000463 material Substances 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 6
- 238000010009 beating Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 210000003050 axon Anatomy 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 239000000344 soap Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The invention relates to the field of detection of gas leakage and particularly relates to a gas-adjustable flow meter comprising an gas inlet, a valve body, an end cover and a gas outlet which are sequentially and mechanically connected, wherein the valve body is in threaded connection with a mandrel; the part, movable relative to the mandrel, of the valve body is a valve body shaft sleeve, and the inner hole of the valve body shaft sleeve is a cylindrical hole; the part, inserted into the valve body shaft sleeve, of the mandrel is a mandrel rod, and the mandrel rod is of a conical shaft; a linear slot on the end face of the rotary mandrel is used for adjusting the radial clearance between the valve body shaft sleeve and the mandrel rod; the linear slot is provided with two through holesand an annular lock nut; and when the lock nut is rotated, a conical hole on the left end of the annular lock nut props against an outer conical body of a locking gasket from the side, generated extrusion force forces the locking gasket to deform and tightly lock an external thread cylinder of the mandrel, thus the jump of the mandrel rod in the valve body shaft sleeve is restrained, and the stability of the flow flowing through the gas-adjustable flow meter is ensured. The gas-adjustable flow meter is a tool of detecting a leak detector in an on-line manner, is simple to manufacture, does not need die sinking, is low in cost and facilitates the small lot production.
Description
Technical field: the present invention relates to gas Leak Detection field, particularly the adjustable constant flow device of a kind of gas.
Background technology: in production and checkout procedure that impermeability detects, often need test to performances such as the accuracy of instrument, repeatability with the missing part of standard leak amount.But the producer for the different industries field, the leakage rate of required missing part is had nothing in common with each other, rill measuring device under the low detected pressures of the demand that has, big flow device under the demand high detection pressure that has, rill measuring device under the demand high detection pressure that also has ... because demand totally different and differing greatly has been difficult to a certain gas constant flow device and all can have met the demands.The traditional industries that particularly have originally only limited to bubble number in the unit interval to the sealing property examination criteria, need the air-leakage detector device to realize the dry type leak detection now, will set up the amount of bubble and the relation of leakage flow, use the adjustable constant flow device of gas as the bridge of the two conversion, a kind of good method of can yet be regarded as.
The impermeability leakage rate exemplar that rich beneficial (Tianjin) pneumatics research institute produces, its structure is the elongated tubular of several minute diameter, and its flow is derived by experimental formula, and the manufacturing process complexity is expensive, and flow can not onlinely be adjusted.
Anhui Zhongke Intelligent High-Tech Co., Ltd is in the patent of invention of application in 2003, a kind of adjustable sample component and detection method, publication number is CN544902A, the low discharge exemplar of Zhi Zuoing can change the flow size by adjusting filter core and the gap of plug sleeve and the gap of plug sleeve and stopper rod in this way, but because exemplar does not have latch mechanism, the flow of adjusting changes easily, and in the adjustment process, usually cause to produce between secondary chi tube and the main scale internal thread and leak, leakage point is more, is not easy to set up the relation of bubble and leakage rate, and filter core all needs die sinking with the leakage core, its part processing operation is more, is not easy to small serial production.
Publication number is the patent of invention of CN101634864A---liquid constant-flow device, is to export constant flow by pressure regulation pin and the pressure spring of taper.Device is made up of pressure regulating cavity, relief piston, pressure spring and input port end cap.Relief piston is contained in the pressure regulating cavity, and pressure spring is sleeved on last, the middle part of relief piston.Relief piston is divided into three parts from top to bottom, top is taper pressure regulation pin, and the middle part is column, and lower part is incomplete cylinder, not exclusively cylinder is formed by the cylinder cutting of cross-sectional area greater than intermediate column, and the cross section after the cutting is vertical with the upper surface of incomplete cylinder.The pressure regulation pin is generally cone, and column is right cylinder, and lower part is incomplete right cylinder.Relief piston is except finishing voltage regulation function, and cut space, bottom also forms fluid flowing passage with pressure regulating cavity, and this device constant flow control has certain effect.
But liquid constant-flow device is exported constant flow by pressure regulation pin and the pressure spring of taper, in case after the part completion of processing such as pressure pressure regulating cavity, pressure regulation pin, pressure spring, just can't adjust delivery rate.Unique easy method is exactly that the spring of changing different elasticity and size is adjusted delivery rate, therefore can't realize online adjustment flow output, and the delivery rate size can't accurately be controlled when adjusting.The elastic force of the pressure spring of this device is opposite with the expulsive force action direction of fluid, and when fluctuation took place hydrodynamic pressure, relief piston has beated, so its delivery rate can change.The factor of fluctuations in discharge is not only caused by the hydrodynamic pressure change, and the relief piston that also has pressure variation to cause is beated and caused.In addition, because pressure spring is subjected to the impact of fluid for a long time, particularly under big pressure condition, the elastic performance of pressure spring changes easily, cause the less stable of this device delivery rate, so this patent of invention working pressure and flow range there is certain limitation.
Publication number is the patent of US5861546A---intelligent gas flow measurement and leak detectionapparatus discloses a kind of intelligent gas-flow rate and has measured and leak detecting device, and disclose described gas flow and leak detecting device and comprised air intake opening, valve body, end cap and gas outlet, described valve body adopts with end cap and is threaded, between end cap and the valve body packing ring is arranged, the place, gas outlet also is provided with elastic washer, described air intake opening place feeds gas, the amount of eluting gas can be regulated by said structure, air intake opening and gas outlet place the two ends of rectangle cylinder, valve body in the middle of the rectangle cylinder air intake opening that is threaded on one side, mandrel, the another side end cap that is threaded, the gas outlet.
Above the deficiencies in the prior art part is: the exemplar filter core of prior art and leakage core need die sinking, and its part processing operation is more, is not easy to small serial production; Filter screen is not installed by exemplar or device inflow point in prior art, is not easy to clear up the impurity of carrying secretly in the gas such as metal fillings; In the body cavity of the exemplar of prior art or device, the mechanical connecting structure such as valve body axle sleeve, mandrel, lock washer, yi word pattern groove and ring nut that adjustment flow and latch mechanism are used are not set, make that the flow of adjusting changes easily, the delivery rate poor stability, make pressure and flow range that certain limitation be arranged.
Summary of the invention: the purpose of this invention is to provide the adjustable constant flow device of a kind of gas, the size that this device can online adjustment flow not only can provide tiny flow quantity with the adjustable constant flow device of making of gas, also can provide big flow, and the stability of delivery rate better.Because this device does not have other leakage point except air intake opening, gas outlet, be convenient to set up the relation of bubble and leakage rate, and do not need die sinking, and is with low cost, is convenient to short run and makes.
Purpose proposed by the invention can realize by technical scheme: the adjustable constant flow device of a kind of gas, comprise air intake opening, valve body, end cap and the gas outlet of mechanical connection successively, valve body adopts with end cap and is threaded, be added with the O type circle of sealing usefulness between end cap and the valve body, when the air intake opening place feeds the gas of certain pressure, the flow that flows through the adjustable constant flow device of gas is definite value, particularly:
The adjustable constant flow device of gas is a rectangle cylinder, air intake opening and gas outlet place the two ends of rectangle cylinder, the valve body left side in the middle of the rectangle cylinder be threaded air intake opening, mandrel, the right be threaded end cap, gas outlet, the air intake opening that the valve body left side is threaded is equipped with filter screen, be used for stopping flowing through of the impurity such as metal fillings that carry secretly gas circuit inside, the inner chamber of valve body comprises valve body axle sleeve, mandrel, lock washer, yi word pattern groove and the annular locknut of mechanical connection, and mandrel also comprises the mandrel rod on it;
Wherein valve body adopts with mandrel and is threaded, the front end of mandrel is the cone axis shape, the rear end is the external thread right cylinder, the inside of valve body is the valve body axle sleeve, the endoporus of valve body axle sleeve is cylindrical hole, the part that mandrel inserts in the valve inner valve body axle sleeve is mandrel rod, and be cone axis, the end face processing of mandrel is equipped with the yi word pattern groove, when using screwdriver class instrument rotation yi word pattern troughed belt moving mandrel to rotate, valve body axle sleeve and mandrel rod produce relative motion, radial play between valve body axle sleeve and the mandrel rod, the yi word pattern groove adjustment screw thread that is equipped with by the processing of mandrel end face changes, and the adjustable constant flow device of gas can be changed from the gas flow that air intake opening flows to the gas outlet;
The yi word pattern groove is provided with two through holes as the passage of gas flow, and gas flows out from the gas outlet of end cap at last through the radial play between air intake opening, valve body axle sleeve and the mandrel rod of valve body, two through holes and the annular locknut on the yi word pattern groove;
The annular locknut is circular external thread cylinder, and its left end endoporus is countersinking, and the right-hand member end face is equipped with notch and is threaded with valve body, uses specific purpose tool to insert notch rotatable ring shape locknut;
Lock washer is equipped with at the external thread right cylinder place of core back-end, lock washer is nylon material, its endoporus is cylindric, be little clearance fit with mandrel, the cylindrical of lock washer is coniform cylinder, when using specific purpose tool rotary annular locknut, the left end countersinking of annular locknut withstands the cylindrical cone of lock washer from the side, the extruding that the produces power of compeling makes lock washer produce distortion, and it is the external thread right cylinder of mandrel is locked, beating of restriction mandrel thread retrained mandrel rod beating in the valve body axle sleeve, namely guarantees to flow through the stability of the adjustable constant flow device flow of gas.
As a further improvement of existing technologies: the endoporus of valve body axle sleeve is cylindrical hole, and the part that mandrel inserts in the valve body is mandrel rod, and is cone axis, or valve body axle sleeve endoporus is conical bore, is mated and has the mandrel rod of relative motion to be cylinder axis;
The right-hand member end face of annular locknut is provided with notch, is four notches, or is equipped with an above notch;
The lock washer cylindrical is coniform cylinder, or lock washer is the coniform cylinder that right-hand member is provided with several notches, and lock washer is nylon material, or other has certain flexible nonmetallic materials;
The end face processing of mandrel is equipped with the yi word pattern groove, or cross groove, or inner hexagonal hole, or is convenient to other shape of rotary manipulation mandrel; The yi word pattern groove is provided with two through holes as the passage of gas flow, or at the yi word pattern groove one or more air-flow through holes are set, or one or more air-flow through holes are set in the optional position of mandrel end face, or along opening one or more groove as the passage of air-flow on the screw thread cylinder of mandrel.
The invention has the beneficial effects as follows:
With respect to prior art, the rate of discharge of the adjustable constant flow device of gas of the present invention, can realize by the gap that the yi word pattern groove of rotary manipulation core shaft end face is adjusted between mandrel rod and the valve body axle sleeve, the adjustment process of flow can be finished in testing process, flow adjustment result before the operation of subsequent installation lock washer, annular locknut, end cap does not influence, easy to operate and reliable.
Change because the big I of radial play between valve body axle sleeve and the mandrel rod is adjusted screw thread by the yi word pattern groove, therefore the adjustable constant flow device of gas of the present invention not only can provide tiny flow quantity to state out, and big flow output also can be provided.In addition, the material of the adjustable constant flow device of a kind of gas of the present invention is not limited to metalwork or nonmetal, so it is not only applicable to high admission pressure condition, also is applicable to low admission pressure condition.
The adjustable constant flow device of gas of the present invention, the radial play that screw thread is installed between mandrel and the valve body is eliminated in the extruding on the circular cone inclined-plane by lock washer and annular locknut, the crimp of lock washer, particularly can avoid transportation, jolting in the test process, shake and cause the loosening of screw thread between mandrel and the valve body, further guarantee the stability of the delivery rate of the adjustable constant flow device of gas.
The adjustable constant flow device of gas of the present invention by four notches of specific purpose tool rotary annular locknut end face, can be avoided inoperative personnel dismounting after the adjustable constant flow device adjustment of this gas, adjustment or maloperation.Filter screen is equipped with at air intake opening of the present invention place, but not only the impurity in the barrier gas flows into the mandrel gap, and filter screen is for convenience detach, is convenient to remove impurity, has guaranteed the stability of the adjustable constant flow device delivery rate of this gas.
Design technology of the present invention is simple, easy for installation, the sealing that installs each link of back is easy to guarantee, do not have other leakage point except air intake opening, gas outlet, be convenient to set up the relation of bubble and leakage rate, more convenient conventional seals industry is the transition to the dry type leak detecting from the bubble leak detecting.The present invention makes simply, does not need die sinking, and is with low cost, is convenient to small serial production.
Description of drawings
Fig. 1 is the complete section structural drawing of the adjustable constant flow device of gas;
Fig. 2 is the complete section structural drawing of mandrel and the vertical view of mandrel end face;
Fig. 3 is the complete section structural drawing of annular locknut and the vertical view of ring lock female end face;
Fig. 4 is the circular cone annulus figure between valve body and the mandrel;
Fig. 5 is the adjustable constant flow device synoptic diagram of soap film flowmeter marked gas.
Embodiment
Below in conjunction with embodiment the present invention is further explained:
In the drawings, 1 is air intake opening, and 2 is filter screen, and 3 is the valve body axle sleeve, 4 is mandrel rod, and 5 is valve body, and 6 is mandrel, 7 is lock washer, and 8 is the yi word pattern groove, and 9 is annular locknut, 10 is notch, and 11 is O type circle, and 12 is end cap, 13 is the gas outlet, and 14 is two air-flow through holes, and 15 for providing the source of the gas of constant pressure P0,16 is the air-flow flow speed control valve, and 17 is the adjustable constant flow device of gas, and 18 is soap film flowmeter.
When using specific purpose tool rotary annular locknut 9, the left end countersinking of annular locknut 9 is pushed down the cylindrical cone of lock washer 7 from the side, the extruding of the conical surface forces lock washer 7 to produce distortion, the external thread cylinder of mandrel 6 is locked, limited beating of mandrel 6 screw threads, retrain mandrel rod 4 beating in valve body axle sleeve 3, guaranteed to flow through the stability of the adjustable constant flow device flow of gas.
Be added with the O type circle 11 of sealing usefulness between end cap 12 and the valve body 5, easy for installation, when being easy to guarantee that gas flows out gas outlet 13 from air intake opening 1, the sealing between end cap 12 and the valve body 5.After the adjustable constant flow device integral installation of gas finishes, the sealing of each link is easy to guarantee, do not have other leakage point except air intake opening, gas outlet, be convenient to set up the relation of bubble and leakage rate, more convenient conventional seals industry is the transition to the dry type leak detecting from the bubble leak detecting.
Valve body axle sleeve 3 endoporus are cylindrical hole, be mated and have the mandrel rod 4 of relative motion to be cone axis, or valve body axle sleeve 3 endoporus are conical bore, are mated and have the mandrel rod 4 of relative motion to be cylinder axis.The yi word pattern groove 8 of the end face portion of mandrel 6 processing, or cross groove, or inner hexagonal hole, or be convenient to other shape of rotary manipulation mandrel 6.
In Fig. 2, the yi word pattern groove 8 of the end face processing of mandrel 6 is provided with two through holes 14 as the passage of air-flow, gas is through two through holes 14 on the radial play between air intake opening 1, valve body axle sleeve 3 and the mandrel rod 4 of valve body 5, the yi word pattern groove 8 and annular locknut 9, at last from gas outlet 13 outflows of end cap 12.
As two air-flow through holes 14 on the gas channel yi word pattern groove 8, it can be one or more through hole, also can bore one or more through holes in the end face portion optional position of mandrel 6, or can be along opening one or more groove as the passage of air-flow on the screw thread cylinder of mandrel 6.
In Fig. 3, the right-hand member end face of annular locknut 9 has four notches 10, or an above notch.Lock washer 7 cylindricals are coniform cylinder, or there is the coniform cylinder of several notches the right part; Lock washer 7 is nylon material, or other has certain flexible nonmetallic materials.
Embodiment:
Provide detection, adjustment, calibration, theoretical delivery computing formula and the practical application explanation of the adjustable constant flow device of gas below:
The adjustable constant flow device air intake opening 1 usefulness flexible pipe of gas is connected to the outlet of the leak locator that can detect flow;
Admission pressure is set, opens gas source switch, leak locator can show the flow value under this detected pressures;
By the yi word pattern groove of instrument rotation mandrel 6 ends, the radial play of regulating mandrel 6 and valve body 5, the shown flow value size of leak locator can change;
After flow value adjusted to needed numerical value, use specific purpose tool to screw annular locknut 9, O type circle 11 is installed, end cap 12 is spun on the valve body 5, and guarantee sealing.
Theoretical delivery computing formula explanation of the present invention:
Can be derived by Bernoulli equation and to draw the flow that gas flows through the circular cone annulus and be
As shown in Figure 4, π is circular constant, d is the diameter of bore of valve body axle sleeve 3, h1 is butt end and the valve body axle sleeve 3 radius length distances of mandrel rod 4, h2 is thin end and the valve body axle sleeve 3 radius length distances of mandrel rod 4, λ is the length that mandrel rod 4 is inserted the valve body axle sleeve, and μ is the viscosity of gas, and Δ p is the pressure reduction between air intake opening and the gas outlet.Can find out that from formula the size of flow q can obtain by the size of adjusting h2, h1, λ, d, therefore, the present invention not only can provide the output of the tiny flow quantity under the high admission pressure condition, and the big flow output under the low admission pressure condition also can be provided.
Demarcation below in conjunction with the adjustable constant flow device of the gas of Fig. 5 explains:
A, the adjustable constant flow device 17 of gas is connected between the source of the gas 15 and soap film flowmeter 18 of constant pressure P0;
B, measure flow value under the corresponding pressure by soap film flowmeter 18;
C, adjustment bleed pressure are measured the flow value of the adjustable constant flow device 17 of gas under the different pressures respectively, and are made the corresponding form of pressure-flow;
D, when flow is big, soap film flowmeter 18 can be replaced with the bell jar gas meter, the more adjustable constant flow device 17 of gas is carried out flow calibration.
The actual operation instruction of the adjustable constant flow device of gas is as follows:
The present invention is the adjustable device of a kind of gas flow, under constant charge pressure, and the constant flow of constant flow device output that gas is adjustable.
The air intake opening 1 usefulness flexible pipe of the adjustable constant flow device 17 of gas is connected to the leak locator detection interface that can detect flow, parameters such as admission pressure are set, open the switch that constant pressure P0 source of the gas 15 is provided, leak locator can show the flow value under this detected pressures.The yi word pattern groove 8 of rotation mandrel 6 end face portion is adjusted the gap between mandrel rod 4 and the valve body axle sleeve 3, when the flow of adjusting reaches desired value, lock washer 7 is installed, lock annular locknut 9, O type circle 11 is installed, screw installation and adjustment that end cap 12 is namely finished the adjustable constant flow device 17 of gas.
Because the adjustable constant flow device of gas delivery rate under the constant charge pressure situation is more stable, and there are many electron devices such as sensor leak locator inside, sensor can produce drift owing to time, variation of temperature, electron device also can wear out because working long hours, so the present invention can be used as the instrument that leak locator regularly detects.
Testing process is as follows: the air intake opening 1 usefulness flexible pipe of the adjustable constant flow device 17 of gas is connected to the leak locator detection interface that can detect flow, parameters such as admission pressure are set, open the switch that constant pressure P0 source of the gas 15 is provided, leak locator can show the flow value under this detected pressures.If the flow value that shows is within the error range of standard flow value under this pressure condition, then the leak locator performance condition is good, can be used for bulk article and detects.
If in testing process, the gas outlet 1 usefulness flexible pipe of the adjustable constant flow device 17 of gas is picked out, and put into water and observe, can calculate number of bubbles in the unit interval by stopwatch, can set up the relation of bubble and leakage rate, be convenient to the conventional seals industry from the bubble leak detecting transition to the dry type leak detecting.
Claims (6)
1. adjustable constant flow device of gas, comprise the air intake opening of mechanical connection (1) successively, valve body (5), end cap (12) and gas outlet (13), described valve body (5) adopts with end cap (12) and is threaded, be added with the O type circle (11) of sealing usefulness between described end cap (12) and the valve body (5), when described air intake opening (1) is located to feed the gas of certain pressure, the flow that flows through the adjustable constant flow device of gas is definite value, the adjustable constant flow device of described gas is a rectangle cylinder, air intake opening (1) and gas outlet (13) place the two ends of rectangle cylinder, it is characterized in that:
Valve body (5) left side in the middle of the described rectangle cylinder be threaded air intake opening (1), mandrel (6), the right be threaded end cap (12), gas outlet (13), the air intake opening (1) that described valve body (5) left side is threaded is equipped with filter screen (2), be used for stopping flowing through of the metal fillings impurity carried secretly gas circuit inside, the inner chamber of described valve body (5) comprises valve body axle sleeve (3), mandrel (6), lock washer (7), yi word pattern groove (8) and the annular locknut (9) of mechanical connection, and described mandrel (6) also comprises the mandrel rod (4) on it;
Described valve body (5) adopts with mandrel (6) and is threaded, the front end of described mandrel (6) is the cone axis shape, the rear end is the external thread right cylinder, the inside of described valve body (5) is valve body axle sleeve (3), the endoporus of described valve body axle sleeve (3) is cylindrical hole, the part that described mandrel (6) inserts in valve body (5) the inner valve axon cover (3) is mandrel rod (4), and be cone axis, the end face processing of described mandrel (6) is equipped with yi word pattern groove (8), when using screwdriver class instrument rotation yi word pattern groove (8) to drive mandrel (6) rotation, described valve body axle sleeve (3) produces relative motion with mandrel rod (4), radial play between described valve body axle sleeve (3) and the mandrel rod (4), yi word pattern groove (8) the adjustment screw thread that is provided with by the processing of mandrel (6) end face changes, and the adjustable constant flow device of gas can be changed from the gas flow that air intake opening (1) flows to gas outlet (13);
Described yi word pattern groove (8) is provided with two through holes (14) as the passage of gas flow, gas flows out from the gas outlet (13) of end cap (12) at last through radial play, two through holes (14) on the yi word pattern groove (8) and annular locknut (9) between air intake opening (1), valve body axle sleeve (3) and the mandrel rod (4) of valve body (5);
Described annular locknut (9) is circular external thread cylinder, and its left end endoporus is countersinking, and the right-hand member end face is provided with notch (10) and is threaded with valve body (5), uses specific purpose tool to insert notch (10) rotatable annular locknuts (9);
Lock washer (7) is equipped with at the external thread right cylinder place of described mandrel (6) rear end, described lock washer (7) is nylon material, its endoporus is cylindric, be little clearance fit with mandrel (6), the cylindrical of described lock washer (7) is coniform cylinder, when using specific purpose tool rotary annular locknut (9), the left end countersinking of annular locknut (9) withstands the cylindrical cone of lock washer (7) from the side, the extruding that the produces power of compeling makes lock washer (7) produce distortion, and it is the external thread right cylinder of mandrel (6) is locked, beating of restriction mandrel (6) screw thread, retrain mandrel rod (4) beating in valve body axle sleeve (3), namely guaranteed to flow through the stability of the adjustable constant flow device flow of gas.
2. the adjustable constant flow device of a kind of gas as claimed in claim 1, it is characterized in that: the endoporus of described valve body axle sleeve (3) is cylindrical hole, the part that described mandrel (6) inserts in valve body (5) the inner valve axon cover (3) is mandrel rod (4), and be cone axis, or valve body axle sleeve (3) endoporus is conical bore, is mated and has the mandrel rod (4) of relative motion to be cylinder axis.
3. the adjustable constant flow device of a kind of gas as claimed in claim 1, it is characterized in that: the right-hand member end face of described annular locknut (9) is provided with notch (10), and described notch (10) is to be provided with four notches, or is provided with an above notch.
4. the adjustable constant flow device of a kind of gas as claimed in claim 1, it is characterized in that: described lock washer (7) cylindrical is coniform cylinder, or lock washer (7) is the coniform cylinder that right-hand member is provided with several notches, described lock washer (7) is nylon material, or other has certain flexible nonmetallic materials.
5. the adjustable constant flow device of a kind of gas as claimed in claim 1 is characterized in that: the end face processing of described mandrel (6) is provided with yi word pattern groove (8), or cross groove, or inner hexagonal hole, or is convenient to other shape of rotary manipulation mandrel (6).
6. the adjustable constant flow device of a kind of gas as claimed in claim 5, it is characterized in that: described yi word pattern groove (8) is provided with two through holes (14) as the passage of gas flow, or at yi word pattern groove (8) one or more air-flow through holes are set, or in the optional position of mandrel (6) end face one or more air-flow through holes are set, or along opening one or more grooves as the passage of air-flow on the screw thread cylinder of mandrel (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010508517 CN102445311B (en) | 2010-10-15 | 2010-10-15 | Gas-adjustable flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010508517 CN102445311B (en) | 2010-10-15 | 2010-10-15 | Gas-adjustable flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102445311A CN102445311A (en) | 2012-05-09 |
| CN102445311B true CN102445311B (en) | 2013-09-25 |
Family
ID=46008024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010508517 Active CN102445311B (en) | 2010-10-15 | 2010-10-15 | Gas-adjustable flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102445311B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003701B (en) * | 2015-08-03 | 2017-09-22 | 南京理工大学 | A kind of variable pressure maintaining valve of Opening pressure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1647319A1 (en) * | 1988-12-06 | 1991-05-07 | Войсковая Часть 11284 | Control gas flow regulator |
| CN1544902A (en) * | 2003-11-12 | 2004-11-10 | 安徽中科智能高技术有限责任公司 | Sample piece with adjustable gas leakage amount and detection method |
| CN201078499Y (en) * | 2007-09-26 | 2008-06-25 | 黄勤根 | Flow control valve |
| EP2133680A2 (en) * | 2008-06-10 | 2009-12-16 | Blueco S.r.l. | Device for detecting water leaks |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8622072B2 (en) * | 2008-12-05 | 2014-01-07 | Fisher Controls International, Llc | Apparatus to control fluid flow |
-
2010
- 2010-10-15 CN CN 201010508517 patent/CN102445311B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1647319A1 (en) * | 1988-12-06 | 1991-05-07 | Войсковая Часть 11284 | Control gas flow regulator |
| CN1544902A (en) * | 2003-11-12 | 2004-11-10 | 安徽中科智能高技术有限责任公司 | Sample piece with adjustable gas leakage amount and detection method |
| CN201078499Y (en) * | 2007-09-26 | 2008-06-25 | 黄勤根 | Flow control valve |
| EP2133680A2 (en) * | 2008-06-10 | 2009-12-16 | Blueco S.r.l. | Device for detecting water leaks |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102445311A (en) | 2012-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20150376984A1 (en) | Bridge-type concentric continuously adjustable water distributor | |
| CN207351503U (en) | Can on-line control flow throttling arrangement | |
| US6923074B2 (en) | Ball valve with flow-rate gauge incorporated directly in the ball | |
| CN201858406U (en) | Low-high gas flow adjustable device | |
| US7389684B2 (en) | Gas lift flow surveillance device | |
| CN102445311B (en) | Gas-adjustable flow meter | |
| CN103982164A (en) | Concentric eccentric valve water distributor | |
| CN105698999A (en) | Method and device for detecting pretightening force degeneration process of double nut ballscrew pair | |
| CN105699688B (en) | Device and method for measuring flow velocity and flow of fluid | |
| CN210198462U (en) | Screw flowmeter | |
| CN104792373A (en) | Variable-area critical flow flowmeter | |
| CN222784505U (en) | Crude oil water content detection device | |
| CN206146488U (en) | Heavy -calibre ultrasonic flowmeter transducer element and heavy -calibre ultrasonic flowmeter | |
| CN216385818U (en) | Flowmeter with pipe diameter detection function | |
| CN205778847U (en) | It is applied to the pump drainage sampling device of connector for logging while drilling | |
| CN201233321Y (en) | Pneumatic test device for rotary valve and sliding valve | |
| CN205301358U (en) | Take fixing device's pin type pitot tube | |
| CN202039813U (en) | Needle valve | |
| CN205103032U (en) | Flow nipple and have pressure measurement structure of engine of this flow nipple | |
| CN105467154A (en) | Pin type Pitot tube with fixing device and flow velocity measurement method thereof | |
| CN207866329U (en) | A kind of U-shaped multithread road Commercial ultrasound wave gas meter, flow meter | |
| CN105699090A (en) | Pneumatic parameter sensor | |
| CN203798758U (en) | Convection-diffusion type thermal conductivity cell | |
| CN207437816U (en) | Adjustable throttling set | |
| CN204854900U (en) | Wide range piston liquid flow standard device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |