CN202733093U - Linear self-operated flow control valve - Google Patents
Linear self-operated flow control valve Download PDFInfo
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- CN202733093U CN202733093U CN 201220336122 CN201220336122U CN202733093U CN 202733093 U CN202733093 U CN 202733093U CN 201220336122 CN201220336122 CN 201220336122 CN 201220336122 U CN201220336122 U CN 201220336122U CN 202733093 U CN202733093 U CN 202733093U
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- valve
- cock
- flow control
- plug cock
- automatic
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Abstract
The utility model discloses a linear self-operated flow control valve which mainly comprises a valve body, a valve cover, a flow indicating device (or an electric actuating mechanism), a positioning screw, a hand plug cock (a hand valve rod), a plug cock sleeve, a compensating sealing gasket, and an automatic mechanism comprising an automatic valve plug, an automatic copper sleeve, a middle section, an automatic valve rod, a diaphragm, a diaphragm cushion, a spring and a spring strut. The hand plug cock adopts a hollow cylinder in the valve body; a plug cock copper sleeve also adopts a hollow cylinder; three to four windows with rectangular unfolding shapes are correspondingly and uniformly cast along circumferences of the two hollow cylinders; the plug cock copper sleeve is fixed relative to the valve cover after assembly; the hand plug cock can rotate around the axis of the hand plug cock relative to the valve cover; and when the rectangular windows of the hand plug cock and the plug cock copper sleeve coincide with each other, the adjustable travel of the valve is maximum, and the corresponding control flow is also maximum, so that the linear self-operated flow control valve has the flow control property of linearity, and enables a heating system to be adjusted to the best.
Description
Technical field
The utility model relates to a kind of valve that utilizes self structure to control the pipeline fluid flow, especially a kind of straight line type self-operated flow control valve.
Background technique
In life, relate in the conveying of gas and liquid, the control flow is a kind of requisite means, control flow mode commonly used is that flow control valve is installed.In the fluid control valve field, flow-adjusting characteristics and flow control accuracy are key issues.Flow-adjusting characteristics and flow control accuracy problem to existing self-operated flow control valve on the market are analyzed discovery: the flow-adjusting characteristics of all self-operated flow control valves all is approximate equal percentage flow characteristic both at home and abroad, does not also have the self-operated flow control valve of straight line type flow-adjusting characteristics; The patent No. is 201020202176.2, name is called the high accuracy self-operated flow control valve technology and 200920153810.5 of " the real work axis of valve plug breaks away from the restriction of membrane axis; with the internal diameter self-alignment of copper sheathing; reduce to the surface friction drag of valve plug and copper sheathing minimum ", name be called micro error diaphragm actuating mechanism of valve " external diameter that the internal diameter of body is designed to conical surface, pad also is designed to conical surface; the deformation band of limiting diaphragm gradually changes each instantaneous area of diaphragm; The groove design of diaphragm is the cylndrical surface of actuator's total travel more than 1/2 times, to adapt to the needs of diaphragm groove radius of curvature maximum in actuator's total travel process." technology can effectively improve flow control accuracy.
Self-operated flow control valve is that its function separately is by a modulating valve and the valve sets zoarium that automechanism consists of:
1, modulating valve is one and has flow-adjusting characteristics spool and corresponding valve seat form preferably, its effect is that the flow of demand is set (so-called adjusting), and the shape of spool and corresponding valve seat, size determine that its control characteristic is such as (seeing Fig. 1) such as fast open form (curve 1), straight line type (curve 2), approximate equal percentage types (curve 3).
Flow characteristics refers to that MEDIA FLOW crosses the function relation between the relative opening degree of the relative discharge of valve and valve.
Q/Qmax＝f(L/Lmax)
In the formula: Q is the flow under a certain aperture of valve, m
3/ h; Flow when Qmax is valve wide open, m
3/ h; L is the stroke under a certain aperture of valve, mm; Stroke when L is valve wide open, mm.
The inviscid flow flow characteristic of valve refers to the Flow characteristics under the changeless ideal condition of valve front and back pressure reduction, and self-operated flow control valve is because having pressure reduction control function, so its theoretical delivery characteristic is consistent with the actual flow characteristic.
The heating system final purpose is the balance of heating power operating mode, requires when flow changes, and the heat dissipating capacity of radiator (or controlled loop) adapts to the variation of load.In other words, the aperture of modulating valve changes the linear relationship that is varied to radiator (or controlled loop) heat dissipating capacity, this is only the principle of optimality that heating system is regulated, and accordingly, the actual flow characteristic is optimal Flow characteristics for linear self-operated flow control valve.
2, automechanism control to as if pressure reduction, aforementioned modulating valve spool, valve seat be equivalent to an adjustable pore plate, can regulate flow (setting), and automechanism is as control object with the spool of modulating valve, valve seat, the pressure reduction of controlling its both sides is constant, and after each adjusting (setting) of modulating valve, its area just immobilizes, automechanism keeps the pressure reduction at its two ends constant again, and final result is that flow is constant.
The model utility content
The technical problems to be solved in the utility model provides a kind of in fluid is carried, the self-operated flow control valve that flow-adjusting characteristics is straight line type, flow control accuracy is high.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of straight line type self-operated flow control valve, mainly comprise valve body, valve gap, indicator for flow rate or electric actuator, positioning screwn, manual cock or manual opening stem, the cock sleeve, compensation sealing pad and automatic valve plug, automatic copper sheathing, middle joint, automatic valve rod, diaphragm, the diaphragm pad, spring and spring strut (are seen Fig. 2 a, Fig. 2 b) automechanism that forms consists of, there is the drillable gusset that is distributed on the valve gap center upper end of described valve gap, described manual cock is the spool of hollow cylinder shape in valve body, the manual opening stem that spool is regulated at the valve exposed parts, described compensation sealing pad is the sealing gasket between modulating valve and the Differential Pressure Controller, described automatic valve plug, automatic copper sheathing and automatic valve rod have adopted the patent No. when structural design be 201020202176.2, and name is called the technology of high accuracy self-operated flow control valve; Described diaphragm, diaphragm pad, spring and spring strut have adopted the patent No. when structural design be 200920153810.5, and name is called the technology of micro error diaphragm actuating mechanism of valve.
The gusset of described valve gap upper end can be processed into tapped hole and be used for connecting electric actuator, also can get out aperture for riveted joint flow indication label, namely having connected electric actuator is electronic self-operated flow control valve, and having riveted label is manual self-operated flow control valve.
When described manual cock is the spool of hollow cylinder in valve body, the shape of cock copper sheathing also is the shape of hollow cylinder, on two hollow cylinders, be cast with corresponding along circumference, the window (seeing Fig. 3) that 3～4 uniform expansion shapes are rectangle, the cock copper sheathing is fixed with respect to valve gap after the assembling, manually cock can be rotated by thorny moving cock axis with respect to valve gap, the adjustment stroke of valve is maximum when manual cock overlaps with the rectangular window of cock copper sheathing, corresponding control flow is also maximum, otherwise then the adjustment stroke of valve is minimum, and corresponding control flow is also minimum.
The inner chamber of the hollow cylinder of described manual cock by the valve medium, with the automechanism inner chamber be the connecting vessels structure, it is isobaric can keeping hollow cylinder intracoelomic cavity and automatic valve plug endoporus, diaphragm cavity of resorption, the pressure before the regulating orifice plate namely, this pressure is directly passed to diaphragm by automatic valve plug, diaphragm cavity of resorption; Manually the excircle dimension of the hollow cylinder of cock is that inner chamber with cock copper sheathing hollow cylinder is complementary, and is used for the location of manual cock and the adjusting of the valve medium of flowing through; The cylindrical of cock copper sheathing hollow cylinder is the outlet of regulating orifice plate, and the inner chamber of it and valve body forms a circulation chamber (seeing Fig. 4), and the effect in circulation chamber is to link to each other with valve export, and reduces as much as possible by the area change of circulation chamber to valve export.
Described manual cock is the manual opening stem that spool is regulated at the exposed parts of valve, and its effect 1 is that the adjusting with the valve body outside passes to manual cock, the 2nd, and the indicator for flow rate of being connected with electric actuator connects.
Described compensation sealing pad is the strength member of separating the valve internal different pressures, also is to the in the vertical direction compensation of size error of the parts such as modulating valve and Differential Pressure Controller and valve body.
Described automatic valve plug and automatic valve rod have adopted the patent No. when structural design be 201020202176.2, name is called in the high accuracy self-operated flow control valve: " with on one of the diaphragm actuating mechanism part valve rod; the cylindrical shaft size reduction that is connected with valve plug; make it to change non-cooperation into cooperating by original interference fit of valve plug corresponding aperture; radially leave the gap greater than 0.5mm; axially also leave the gap greater than 0.5mm; make the restriction of the real work axis disengaging membrane axis of valve plug, with the internal diameter self-alignment of copper sheathing, reduce to the surface friction drag of valve plug and copper sheathing minimum.(seeing Fig. 5) " patented technology.
Described diaphragm, diaphragm pad, spring and spring strut have adopted the patent No. when structural design be 200920153810.5, name is called in the micro error diaphragm actuating mechanism of valve: " scheme three: the external diameter that the internal diameter of body is designed to conical surface, pad also is designed to conical surface; the deformation band of limiting diaphragm gradually changes each instantaneous area of diaphragm; The groove design of diaphragm is the cylndrical surface of actuator's total travel more than 1/2 times, to adapt to the needs of diaphragm groove radius of curvature maximum in actuator's total travel process.(seeing Fig. 6) " patented technology.
The beneficial effect that adopts technique scheme to produce is: in the utility model, manual cock is designed to the spool of hollow cylinder in valve body, the shape of cock copper sheathing also is designed to hollow cylinder, on two hollow cylinders, be cast with corresponding along circumference, 3～4 uniform windows that expansion shape is rectangle, the cock copper sheathing is fixed with respect to valve gap after the assembling, manually cock can be rotated by thorny moving cock axis with respect to valve gap, the adjustment stroke of valve is maximum when manual cock overlaps with the rectangular window of cock copper sheathing, corresponding control flow is also maximum, otherwise then the adjustment stroke of valve is minimum, corresponding control flow is also minimum, the result is: flow-adjusting characteristics of the present utility model is linarity, can make the adjusting of heating system reach best.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is several different flow-adjusting characteristics figure;
Fig. 2 a is the erection drawing of actuator of the present utility model when being electronic;
Wherein: 1, valve body, 2, valve gap, 3, electric actuator, 4, manually cock, 5, positioning screwn, 6, the cock copper sheathing, 7 compensation sealing pads, joint in 8, automatic valve plug, 9, automatic copper sheathing, 10,11, automatic valve rod, 12, diaphragm, 13, the diaphragm pad, 14, spring, 15, spring strut.
Erection drawing when Fig. 2 b actuator of the present utility model is manual;
Wherein: 1, valve body, 2, valve gap, 3, indicator for flow rate, all the other are identical with Fig. 2 a.
Fig. 3 is the parts drawing of manual cock, and main the expression is cast with 3～4 uniform shapes that expansion shape is the window of rectangle along circumference.
Fig. 4 is the A-A sectional drawing, and the cylindrical of mainly expressing cock copper sheathing hollow cylinder is the outlet of regulating orifice plate, and the inner chamber of it and valve body forms the shape in a circulation chamber.
Fig. 5 is that the patent No. is 201020202176.2, name is called the employing part of high accuracy self-operated flow control valve, that is: " with cylindrical shaft size reduction on one of the diaphragm actuating mechanism part valve rod, that be connected with valve plug; make it to change non-cooperation into cooperating by original interference fit of valve plug corresponding aperture; radially leave the gap greater than 0.5mm; axially also leave the gap greater than 0.5mm; make the restriction of the real work axis disengaging membrane axis of valve plug; with the internal diameter self-alignment of copper sheathing, reduce to the surface friction drag of valve plug and copper sheathing minimum.”
Fig. 6 patent No. is 200920153810.5, name is called the employing part of the little error diaphragm of valve, that is: " scheme three: the external diameter that the internal diameter of body is designed to conical surface, pad also is designed to conical surface, and the deformation band of limiting diaphragm gradually changes each instantaneous area of diaphragm; The groove design of diaphragm is the cylndrical surface of actuator's total travel more than 1/2 times, to adapt to the needs of diaphragm groove radius of curvature maximum in actuator's total travel process.”
Embodiment
With reference to the accompanying drawings 2a and 2b as can be known, the utility model is specifically related to a kind of straight line type self-operated flow control valve, mainly comprises valve body 1, valve gap 2, electric actuator or indicator for flow rate 3, manually cock 4, positioning screwn 5, cock copper sheathing 6, compensation sealing pad 7 and automatic valve plug 8, automatic copper sheathing 9, middle joint 10, automatic valve rod 11, diaphragm 12, diaphragm pad 13, spring 14 and spring strut 15.By valve body 1, valve gap 2 and spring strut 15 consist of shell of the present utility model, in order to bear hydrodynamic pressure and inner body is installed; By manual cock 4, positioning screwn 5 and cock copper sheathing 6 consist of manual modulation valve, be used for flow is set (also claiming to regulate), and it is linear making the flow-adjusting characteristics of model utility by the structure that manual cock 4 and cock copper sheathing 6 design, and manually the angular displacement of cock 4 is by positioning screwn 5 restrictions; By automatic valve plug 8, automatic copper sheathing 9, middle joint 10, automatic valve rod 11, diaphragm 12, diaphragm pad 13, spring 14 and spring strut 15 consist of automechanisms, are definite value in order to the pressure reduction of controlling manual cock 4 and cock copper sheathing 6 both sides (inside and outside); Horizontal ends is provided with screw thread or the flange plate that is connected with pipeline.
The utility model in use, only need manual cock 4 usefulness electric actuators or manual mode will be set as required flow by the rate-of flow of manual cock 4 and cock copper sheathing 6, automechanism will be controlled to be definite value with the pressure reduction at manual cock 4 and cock copper sheathing 6 two ends, is definite value by rate-of flow of the present utility model consequently.
Claims (4)
1. straight line type self-operated flow control valve, comprise that mainly the automechanism that valve body, valve gap, indicator for flow rate or electric actuator, positioning screwn, manually cock, manual opening stem, cock copper sheathing, compensation sealing pad and automatic valve plug, automatic copper sheathing, middle joint, automatic valve rod, diaphragm, diaphragm pad, spring and spring strut form consists of, it is characterized in that: manual cock is the spool of hollow cylinder shape in valve body.
2. straight line type self-operated flow control valve according to claim 1, it is characterized in that: when manually cock is the spool of hollow cylinder in valve body, the shape of cock copper sheathing also is the shape of hollow cylinder, on two hollow cylinders, be cast with corresponding, uniform 3～4 windows that expansion shape is rectangle along circumference, the cock copper sheathing is fixed with respect to valve gap after the assembling, and manually cock can thorny moving cock axis rotation with respect to valve gap.
3. straight line type self-operated flow control valve according to claim 1 is characterized in that: the inner chamber of the hollow cylinder of described manual cock by the valve medium, with the inner chamber of automechanism be the connecting vessels structure.
4. straight line type self-operated flow control valve according to claim 1, it is characterized in that: the cylindrical of cock copper sheathing hollow cylinder is the outlet of regulating orifice plate, the inner chamber of it and valve body forms a circulation chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220336122 CN202733093U (en) | 2012-07-12 | 2012-07-12 | Linear self-operated flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220336122 CN202733093U (en) | 2012-07-12 | 2012-07-12 | Linear self-operated flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733093U true CN202733093U (en) | 2013-02-13 |
Family
ID=47658794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220336122 Expired - Fee Related CN202733093U (en) | 2012-07-12 | 2012-07-12 | Linear self-operated flow control valve |
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| Country | Link |
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| CN (1) | CN202733093U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091369A (en) * | 2017-05-10 | 2017-08-25 | 宁波兴茂电子科技有限公司 | A kind of pilot valve discharge characteristic test device and its application method |
-
2012
- 2012-07-12 CN CN 201220336122 patent/CN202733093U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091369A (en) * | 2017-05-10 | 2017-08-25 | 宁波兴茂电子科技有限公司 | A kind of pilot valve discharge characteristic test device and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20190712 |