CN205001546U - Can realize waiting regulation ball valve of percentage flow characteristic - Google Patents
Can realize waiting regulation ball valve of percentage flow characteristic Download PDFInfo
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- CN205001546U CN205001546U CN201520592957.XU CN201520592957U CN205001546U CN 205001546 U CN205001546 U CN 205001546U CN 201520592957 U CN201520592957 U CN 201520592957U CN 205001546 U CN205001546 U CN 205001546U
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Abstract
The utility model discloses a can realize waiting regulation ball valve of percentage flow characteristic, which comprises a valve body, the valve body both ends are equipped with the entry end and the exit end of outflow that can supply the fluid to flow into respectively, and its technical scheme's main points are stated in the valve body follow entry end to exit end orientation to be equipped with seal cover, left seal receptacle, spherical case and right seal receptacle in proper order, be equipped with the seal cover pipeline that feeds through in proper order, left seal receptacle pipeline, spherical case pipeline and right seal receptacle pipeline on seal cover, left seal receptacle, spherical case and the right seal receptacle respectively and form the runner that can supply the fluid to pass through with entry end, exit end intercommunication, the entry end with seal cover pipeline formation shoulder hole be equipped with on the right -angle side of seal cover pipeline and form chamfer or the radius angle of loudspeaker form in order to reduce the fluid pressure loss with the entry end. The utility model discloses more ideal equal percentage flow characteristic curve can be obtained, the operation requirement is satisfied.
Description
[technical field]
The utility model relates to a kind of modulating valve, especially relates to a kind of adjustment ball valve realizing equal percentage flow characteristic.
[background technique]
Medium flows through the relation between the relative discharge of valve and relative displacement or relative opening degree to regulate the Flow characteristics of ball valve to refer to.The inherent flow characteristic of modulating valve refers in the Flow characteristics will obtained when pressure reduction is constant before and after modulating valve.It depends on the structure of regulation valve core, state etc.Perfect flow characteristics mainly contains: straight line, equal percentage, parabola and opening characteristic soon, various rating curve figure, as shown in Figure 1.
Straight line type: it is equal that per stroke aperture changes the changes in flow rate caused, during small flow, changes in flow rate is comparatively large, highly sensitive, is not easy to control, and even shakes; When large aperture, flow relative changing value is little, regulates slowly.
Parabolic shape: rating curve is second-degree parabola, between straight line and equal percentage characteristics.
Equal percentage type: same stroke aperture changes in flow rate when small guide vane is little, and during large aperture, changes in flow rate is large, is applicable to the system that load variations amplitude is larger, also claims log characteristic type.
Fast open form: when stroke aperture is less, flow-rate ratio is comparatively large, and the augmented flow along with stroke reaches maximum very soon.The effective travel aperture < d/4 (d is valve-seat diameter) of valve, does not play regulatory role when stroke increases again, is applicable to dibit and controls.
Existingly realize in the adjustment ball valve of equal percentage flow characteristic, have plenty of spheroid runner hole and make V-type or C type, also have plenty of the parts increasing particular geometry in valve body, these ways all can increase manufacture cost and the assembly cost of valve virtually.
The utility model is exactly make in view of the situation.
[model utility content]
The utility model object overcomes the deficiencies in the prior art, provides a kind of structure simple, easy to process and can realize the adjustment ball valve of equal percentage flow characteristic.
The utility model is achieved through the following technical solutions:
A kind of adjustment ball valve realizing equal percentage flow characteristic, include valve body 1, described valve body 1 two ends are respectively equipped with the entry end 2 that can flow into for fluid and the outlet end 3 flowed out, stuffing box gland 4 is provided with successively from entry end 2 to outlet end 3 direction in described valve body 1, left sealing seat 5, spherical valve core 6 and right sealing seat 7, described stuffing box gland 4, left sealing seat 5, spherical valve core 6 is provided with right sealing seat 7 the stuffing box gland pipeline 8 be communicated with successively, left sealing seat pipeline 9, spherical valve core pipeline 10 and right sealing seat pipeline 11, described entry end 2, stuffing box gland pipeline 8, left sealing seat pipeline 9, spherical valve core pipeline 10, right sealing seat pipeline 11 and described outlet end 3 are communicated with the runner being formed and can pass through for fluid successively, described entry end 2 forms shoulder hole with described stuffing box gland pipeline 8, the right angle side of described stuffing box gland pipeline 8 is provided with and can be formed horn-like with the chamfering 12 reducing fluid pressure loss or rounding 13 with entry end 2.
The adjustment ball valve of equal percentage flow characteristic can be realized as above, it is characterized in that: described outlet end 3 is cone-shaped pipe.
The adjustment ball valve of equal percentage flow characteristic can be realized as above, it is characterized in that: described outlet end 3 is the cone-shaped pipe that internal diameter becomes large gradually.
The adjustment ball valve of equal percentage flow characteristic can be realized as above, it is characterized in that: described outlet end 3 cone angle is 30 degree to 40 degree.
The adjustment ball valve of equal percentage flow characteristic can be realized as above, it is characterized in that: the internal diameter of described stuffing box gland pipeline 8 and described spherical valve core pipeline 10 is equal.
The adjustment ball valve of equal percentage flow characteristic can be realized as above, it is characterized in that: described left sealing seat 5 and described right sealing seat 7 are symmetricly set on described spherical valve core 6 both sides.
The adjustment ball valve of equal percentage flow characteristic can be realized as above, it is characterized in that: the internal diameter of described left sealing seat pipeline 9 and described right sealing seat pipeline 11 is equal.
The adjustment ball valve of equal percentage flow characteristic can be realized as above, it is characterized in that: described entry end 2 is hole, right angle.
The adjustment ball valve of equal percentage flow characteristic can be realized as above, it is characterized in that: the internal diameter of described entry end 2 is greater than the internal diameter of described stuffing box gland pipeline 8.
The adjustment ball valve of equal percentage flow characteristic can be realized as above, it is characterized in that: described left sealing seat 5 is identical with described right sealing seat 7 structure.
Compared with prior art, the utility model has the following advantages:
1, the utility model adopts the stuffing box gland pipeline that reduces suddenly of internal diameter due to the entry end of ball valve runner, such resistance increasing fluid in inflow body cavity, make valve little in the change of small guide vane down-off, rounding or chamfering is provided with in addition to be formed horn-like with entry end on stuffing box gland pipeline right angle side, too sharply can not change when fluid is flow through, thus form turbulent flow; And outlet end to be set to cone angle be the conical bore that the internal diameter of 30 ° ~ 40 ° expands gradually, make valve all smoother at large aperture rating curve, so just without the need to changing the shape of spheroid runner or increasing other runner elements of installation, therefore, it is possible to obtain more satisfactory equal percentage flow characteristic curve, meet usage requirement.
2, the utility model regulates ball-valve structure simple, assembling easily, produce and maintenance cost all lower.
[accompanying drawing explanation]
Fig. 1 is the rating curve figure of various adjustment ball valve;
Fig. 2 is the cut away view that the utility model regulates ball valve;
Fig. 3 is that the utility model regulates the sectional view of ball valve when stuffing box gland pipeline right angle side establishes rounding;
Fig. 4 is that the utility model regulates the sectional view of ball valve when stuffing box gland pipeline right angle side establishes chamfering;
Fig. 5 is the enlarged view at A place in Fig. 3;
Fig. 6 is the enlarged view at B place in Fig. 4;
Fig. 7 is that the utility model regulates ball valve pressure reduction traffic characteristic plotted curve when 100KPa before and after valve body.
In figure: 1 is valve body; 2 is entry end; 3 is outlet end; 4 is stuffing box gland; 5 is left sealing seat; 6 is spherical valve core; 7 is right sealing seat; 8 is stuffing box gland pipeline; 9 is left sealing seat pipeline; 10 is spherical valve core pipeline; 11 is right sealing seat pipeline; 12 is chamfering; 13 is rounding.
[embodiment]
Below in conjunction with accompanying drawing, the utility model technical characteristics is described in further detail so that described those skilled in the art understand.
A kind of adjustment ball valve realizing equal percentage flow characteristic, include valve body 1, described valve body 1 two ends are respectively equipped with the entry end 2 that can flow into for fluid and the outlet end 3 flowed out, stuffing box gland 4 is provided with successively from entry end 2 to outlet end 3 direction in described valve body 1, left sealing seat 5, spherical valve core 6 and right sealing seat 7, described stuffing box gland 4, left sealing seat 5, spherical valve core 6 is provided with right sealing seat 7 the stuffing box gland pipeline 8 be communicated with successively, left sealing seat pipeline 9, spherical valve core pipeline 10 and right sealing seat pipeline 11, described entry end 2, stuffing box gland pipeline 8, left sealing seat pipeline 9, spherical valve core pipeline 10, right sealing seat pipeline 11 and described outlet end 3 are communicated with the runner being formed and can pass through for fluid successively, described entry end 2 forms shoulder hole with described stuffing box gland pipeline 8, the right angle side of described stuffing box gland pipeline 8 is provided with and can be formed horn-like with the chamfering 12 reducing fluid pressure loss or rounding 13 with entry end 2, as shown in Figure 3 and Figure 4.
Described chamfering 12 is the chamfering of 45 degree, and according to regulating, the size of ball valve is different, and the right angle length of side of chamfering is 8 to 10 millimeters, and rounding radii is 8 to 10 millimeters.
For making valve little in the change of small guide vane down-off, the entry end 2 of this adjustment ball valve is ad hoc is set to the shoulder hole reduced suddenly, the local resistance of such increase fluid, but in order to not make fluid produce turbulent flow, arranging on the right angle side of the stuffing box gland pipeline 8 reduced again and being rounded down or chamfering, comparatively smooth-going when making fluid flow to aperture from macropore, reduce the pressure loss and turbulent flow, thus ensure that valve is when small guide vane, changes in flow rate is little, rating curve is level and smooth, and this rating curve as shown in Figure 7.
Further, the outlet end 3 of this adjustment ball valve is cone-shaped pipe, and becomes large cone-shaped pipe gradually for internal diameter.Because outlet end 3 increases gradually, such fluid can more steadily flow out, and there will not be fluid turbulence, and the controllability of valve is more excellent, and guaranteed flow characteristic curve is more level and smooth when large aperture.
Because outlet end is conical bore, the cone angle of this conical bore must control in certain limit.The repetition test by how long, when finding that outlet end 3 cone angle is 30 degree to 40 degree, valve its rating curve under large aperture is the most level and smooth all.
In the present embodiment, the preferred following structure of ball valve is regulated:
The internal diameter of described stuffing box gland pipeline 8 and described spherical valve core pipeline 10 is equal.
Described left sealing seat 5 and described right sealing seat 7 are symmetricly set on described spherical valve core 6 both sides.
The internal diameter of described left sealing seat pipeline 9 and described right sealing seat pipeline 11 is equal.
Described entry end 2 is hole, right angle.
The internal diameter of described entry end 2 is greater than the internal diameter of described stuffing box gland pipeline 8.
Described left sealing seat 5 is identical with described right sealing seat 7 structure, can exchange.
Following table is regulate ball valve pressure reduction traffic characteristic relation table when 100KPa before and after valve body.
| ΔP/KPa | Valve opening h% | Qv/m 3/h |
| 100 | 0 | 0 |
| 100 | 5 | 1.65 |
| 100 | 10 | 2.05 |
| 100 | 20 | 3.2 |
| 100 | 30 | 6.4 |
| 100 | 40 | 9.34 |
| 100 | 50 | 16 |
| 100 | 60 | 24.36 |
| 100 | 70 | 36.82 |
| 100 | 80 | 54.55 |
| 100 | 90 | 82 |
| 100 | 100 | 101.88 |
Note: Δ P is the pressure reduction before and after valve body
Below embodiment has been described in detail the utility model by reference to the accompanying drawings, and those skilled in the art can make many variations example to the utility model according to the above description.Thus, some details in embodiment should not formed restriction of the present utility model, the utility model by the scope that defines using appended claims as protection domain of the present utility model.
Claims (10)
1. one kind can realize the adjustment ball valve of equal percentage flow characteristic, include valve body (1), described valve body (1) two ends are respectively equipped with the entry end (2) that can flow into for fluid and the outlet end (3) flowed out, it is characterized in that: in described valve body (1), be provided with stuffing box gland (4) from entry end (2) successively to outlet end (3) direction, left sealing seat (5), spherical valve core (6) and right sealing seat (7), described stuffing box gland (4), left sealing seat (5), spherical valve core (6) and right sealing seat (7) are respectively equipped with stuffing box gland pipeline (8), left sealing seat pipeline (9), spherical valve core pipeline (10) and right sealing seat pipeline (11), described entry end (2), stuffing box gland pipeline (8), left sealing seat pipeline (9), spherical valve core pipeline (10), right sealing seat pipeline (11) and described outlet end (3) are communicated with the runner being formed and can pass through for fluid successively, described entry end (2) and described stuffing box gland pipeline (8) form shoulder hole, the right angle side of described stuffing box gland pipeline (8) is provided with and can be formed horn-like with the chamfering reducing fluid pressure loss (12) or rounding (13) with entry end (2).
2. the adjustment ball valve realizing equal percentage flow characteristic according to claim 1, is characterized in that: described outlet end (3) is cone-shaped pipe.
3. the adjustment ball valve realizing equal percentage flow characteristic according to claim 2, is characterized in that: described outlet end (3) becomes large cone-shaped pipe gradually for internal diameter.
4. the adjustment ball valve realizing equal percentage flow characteristic according to claim 3, is characterized in that: described outlet end (3) cone angle is 30 degree to 40 degree.
5. the adjustment ball valve realizing equal percentage flow characteristic according to claim 1, is characterized in that: the internal diameter of described stuffing box gland pipeline (8) and described spherical valve core pipeline (10) is equal.
6. the adjustment ball valve realizing equal percentage flow characteristic according to claim 1, is characterized in that: described left sealing seat (5) and described right sealing seat (7) are symmetricly set on described spherical valve core (6) both sides.
7. the adjustment ball valve realizing equal percentage flow characteristic according to claim 1, is characterized in that: the internal diameter of described left sealing seat pipeline (9) and described right sealing seat pipeline (11) is equal.
8. the adjustment ball valve realizing equal percentage flow characteristic according to claim 1, is characterized in that: described entry end (2) is hole, right angle.
9. the adjustment ball valve realizing equal percentage flow characteristic according to claim 8, is characterized in that: the internal diameter of described entry end (2) is greater than the internal diameter of described stuffing box gland pipeline (8).
10. the adjustment ball valve realizing equal percentage flow characteristic according to claim 1, is characterized in that: described left sealing seat (5) is identical with described right sealing seat (7) structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520592957.XU CN205001546U (en) | 2015-08-08 | 2015-08-08 | Can realize waiting regulation ball valve of percentage flow characteristic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520592957.XU CN205001546U (en) | 2015-08-08 | 2015-08-08 | Can realize waiting regulation ball valve of percentage flow characteristic |
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| CN205001546U true CN205001546U (en) | 2016-01-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151643A (en) * | 2016-08-18 | 2016-11-23 | 深圳市共济科技股份有限公司 | A kind of electrical ball valve aperture control method and system |
-
2015
- 2015-08-08 CN CN201520592957.XU patent/CN205001546U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151643A (en) * | 2016-08-18 | 2016-11-23 | 深圳市共济科技股份有限公司 | A kind of electrical ball valve aperture control method and system |
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