CN204512440U - Static two acting balancing valve - Google Patents
Static two acting balancing valve Download PDFInfo
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- CN204512440U CN204512440U CN201420696976.2U CN201420696976U CN204512440U CN 204512440 U CN204512440 U CN 204512440U CN 201420696976 U CN201420696976 U CN 201420696976U CN 204512440 U CN204512440 U CN 204512440U
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- acting balancing
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Abstract
A kind of two acting balancing valve of static state balanced for fluid regulation and pipe network, static two acting balancing valve comprises valve body, upper cover, valve shaft A is equipped with at upper cover center, valve shaft A is equipped with handwheel A in top, valve shaft A center is penetrating, valve shaft B is housed, valve shaft A bottom connects valve rod A, valve rod A is equipped with flap A in bottom, the aperture of the adjusted head piece A of flap A, valve shaft B is equipped with valve rod B in bottom, valve rod B is equipped with flap B in bottom, the aperture of the adjusted head piece B of flap B, pressure obtaning device A and B can external pressure gauge differential pressure meter, the static two acting balancing valve adjustment method of application, coordinate debugging chart can obtain required flow.The utility model compared with the prior art more reasonable structure, compact, volume is little, dismounting, safeguard simple, debugging does not need to use intelligent instrument specially for same, without the need to considering pressure reduction change before and after the valve that causes in debug process, debug process more fast, simple, convenient.
Description
Technical field
The present invention relates to the two acting balancing valve of a kind of static state for fluid regulation and adjustment method thereof.
Background technique
In the system that central heat supply and central air-conditioner etc. need fluid to carry, the flow of fluid often needs to carry out Balance route, particularly have the system of a lot of loop in parallel and multiple branch circuit, more need the flow accurately controlling each pipeline, prevent actual motion flow and the unmatched situation of required flow, solve hydraulic misadjustment, ensure pipe network flow equilibrium.In order to realize above-mentioned functions, existing patented technology is " equilibrium valve and intelligent instrument specially for same thereof ", publication number is CN88203650U, its working principle is: by input valve opening, with record pressure reduction before and after valve, calculate present flow rate, and the impedance of confession back pressure difference and the branch road installing equilibrium valve branch road can be calculated by twice debugging, the required flow value of the most backward intelligent instrument specially for same input, instrument can calculate aperture needed for equilibrium valve, set according to this aperture, required flow can be obtained.The shortcoming of this technology is: 1. debugging work load is large: the flow of a debugging equilibrium valve needs repeatable operation just can be transferred to required flow at least 3 times, and each equilibrium valve aperture that changes all will input new opening value to intelligent instrument specially for same, just can measure present flow rate value; 2. the formula of intelligent instrument specially for same is unreasonable, affects adjustment accuracy: only have the unknown quantity that two constant in formula, and one is that the confession back pressure of debugging traffic branch road is poor, and two is the resistance values of this branch road when not installing equilibrium valve; Formula is regarded the confession back pressure difference of debugging traffic branch road as definite value and is calculated, finally draw the opening value that required flow is corresponding, but the central heat supply of reality and central air conditioning water system, when a branch road changes flow, the total pressure diagram of system can change, and the confession back pressure difference of this branch road also can change, therefore, also there is error in the aperture that the required flow that intelligent instrument specially for same provides is corresponding, also needs to continue repeatedly to finely tune, and just can make equilibrium valve infinite approach required control flow.
Summary of the invention
In order to overcome the problem that existing equilibrium valve and intelligent instrument specially for same debugging work load thereof are large and adjustment accuracy is not high, the object of this invention is to provide a kind of structure simple, compact, and operation is directly perceived, the two acting balancing valve of easy static state and adjustment method thereof, in debug process, due to the pressure reduction that regulated quantity is before and after fixed resistance flap, therefore without the need to considering the impact of control valve aperture change on whole network hydraulic operation state own, only need once debug, static two acting balancing valve just can be allowed to reach required flow, significantly reduce debugging difficulty and debugging work load, improve the efficiency of heat supply network balancing work, and demolition and maintenance are simple, very be applicable to China's central heat supply and central air-conditioning system pipe network.
The utility model solves its technical problem and is achieved in that
Static two acting balancing valve comprises valve body (2), valve gap (3) is equipped with on valve body (2) top, valve shaft A (9) is equipped with at valve gap (3) center, valve gap (3) bottom is provided with polygonal valve stem spacing (12), handwheel A (11) is equipped with on valve shaft A (9) top, valve shaft A (9) center is penetrating, valve shaft B (8) is housed, valve shaft A (9) bottom connects valve rod A (13), flap A (15) is equipped with in valve rod A (13) bottom, flap A (15) can along valve valve shaft A (9) axial action, the aperture of adjusted head piece A (21), its aperture can be observed by the valve position (10) of handwheel A (11), valve rod B (16) is equipped with in valve shaft B (8) bottom, flap B (18) is equipped with in valve rod B (16) bottom, adjusting handle B (7) can change flap B (18) and the aperture crossing head piece B (20), pressure obtaning device A (17) and pressure obtaning device B (14) can external pressure gauge differential pressure meter, read pressure difference.During to static two acting balancing valve debugging traffic, the pressure difference utilizing pressure obtaning device A (17) and pressure obtaning device B (14) outer relay table differential pressure meter to read and valve position value, coordinate debugging chart to carry out adjusting handle B (7) and can obtain required flow.
Comparatively wide arc gap is there is between the outside of the polygonal valve stem spacing (12) of static two acting balancing valve and valve body (2) inner chamber, be sliding friction inside it and between valve rod A (13), gap is less, lubrication filler can be added, polygonal valve stem spacing (12) inner side limits valve rod A (13) with the rotation certainly as axle, valve rod A (13) can only be moved, the aperture of modified head piece B (20) along valve shaft direction.
The center of the flap A (15) of static two acting balancing valve is provided with polygonal spacing hole slot, and be sliding friction between valve rod B (16), and gap is less, greasing substance can be filled, polygonal spacing hole slot limits valve rod B (16) with the rotation certainly as axle, valve rod B (16) can only be moved, the aperture of modified head piece A (21) along valve shaft direction.
Commissioning staff can measure the force value of head piece A (21) upstream by pressure obtaning device A (17), can be measured the force value in head piece A (21) downstream by pressure obtaning device B (14).
Debugging chart, adopt two-dimensional coordinate system, axis of abscissas represents pressure difference, axis of ordinates represents flow value, curve in system of coordinates, be the pressure reduction-rating curve corresponding to handwheel A (11) each opening value, every bar characteristic curve meets functional relation:
in formula, Q is the flow value by static two acting balancing valve, Δ P is pressure difference [difference of the force value of head piece A (21) upstream and the force value in head piece A (21) downstream], S is the resistance value (resistance value that each aperture correspondence one is fixing, the corresponding characteristic curve of this resistance value), resistance value is relevant with aperture and class of liquids; The two acting balancing valve of the static state of different size, the debugging chart of joining is not identical yet, and the coordinate axes numerical value in chart is all illustrated with percentage, the debugging chart that the two acting balancing valve of static state of actual specification is corresponding, the scale display actual numerical value in its coordinate axes.
When carrying out flow debugging, will flow value (such as Q1) required for controlled pipeline, the position of required flow value Q1 flow coordinate axes is found in the debugging chart corresponding with its specification, a straight line parallel with pressure reduction coordinate axes is drawn with Q1 point, can be crossing with the pressure reduction-rating curve corresponding to a part of opening value, in these opening curve, select an opening curve N1, find intersection point K1, the y coordinate P1 point that K1 point is corresponding, the pressure difference of P1 point is exactly our aperture that sets handwheel A (11) when being N1, adjusting handle B (7) will reach the pressure difference that pressure obtaning device A (17) records with pressure obtaning device B (14), required control flow can be obtained, only need once debug, controlled loop just can be allowed to reach required flow value.
The debugging chart that the static two acting balancing valve of debugging is used, can make electronic chart, by mobile phone, panel computer display; Can make intelligence software, software domestic demand shifts to an earlier date the pressure reduction-rating curve corresponding to each opening value of the static two acting balancing valve of all specifications of typing, and these characteristic curves are by functional relation:
automatic generation, software possesses curve screening function, can in all aperture-pressure reduction-rating curves that can meet required flow, the curve that Auto-matching smoothness is best, the i.e. aperture of most convenient debugging, therefore, in actual debug process, intelligence software can be arranged in mobile phone, panel computer, portable man-machine instrument, can instruct personnel more convenient, carry out debugging efforts efficiently; Concrete steps are, commissioning staff selects the two acting balancing valve specification of mounted static state by man-machine interface, the required flow value of input, software can filter out all opening values meeting this flow value, and for commissioning staff mates handwheel A (11) opening value the most rational, enter next step, software automatically can be transferred and demonstrate the pressure difference needing adjusting handle B (7) to reach pressure obtaning device A (17) and pressure obtaning device B (14) to record.
Differential pressure gauge (pressure difference transmitter) and intelligence software can be implanted in portable apparatus by the debugging acid of static two acting balancing valve, portable apparatus can measure pressure difference, and the data in the pressure difference of measurement and intelligence software can be calculated the flow by static two acting balancing valve; When personnel debug static two acting balancing valve with portable apparatus, only need the static two acting balancing valve specifications of input and required flow, according to handwheel A (11) opening value that portable apparatus provides, two for static state acting balancing valve handwheel A (11) is rotated in place, now portable instrument can show current flow value, the flow value that commissioning staff shows according to portable instrument, continue the aperture of adjustment handwheel B (8), until portable instrument display flow value equals required flow value.
The present invention can be applied in the liquid control system in the fields such as heating, central air-conditioner, tap water, rock gas and oil.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the constitutional diagram of valve shaft, flap and upper cover
Fig. 3 is debugging chart schematic diagram
In figure: 1. export, 2. valve body, 3. valve gap, 4. valve gap bolt, 5. stuffing box packing, 6. differential, 7. handwheel B, 8. valve shaft B, 9. valve shaft A, 10. opening display device, 11. handwheel A, 12. polygonal restraining grooves, 13. valve rod A, 14. pressure obtaning device B, 15. flap A, 16. valve rod B, 17. pressure obtaning device A, 18. flap B, 19. imports, 20. cross head piece B, and 21. cross head piece A.
Embodiment
In Fig. 1, fluid enters valve from import (19) in the direction of the arrow, pressure drop is produced by the gap crossed between head piece (20) and flap B (18), enter the buffer area between flap A (15) and flap B (18), form a new pressure value P 1, P1 to be recorded by pressure obtaning device A (17); The gap that the fluid of buffer area passed through between head piece (21) and flap A (15) produces pressure drop, enter flap A (15) buffer area, downstream, form a new pressure value P 2, P2 to be recorded by pressure obtaning device B (14); Fluid is no longer dammed by valve afterwards, and directly flow to outlet (1), dynamic pressure does not have loss substantially, and fluid level does not change substantially simultaneously, so the force value of outlet (1) is approximately equal to P2.
Adjusting handle A (11) or handwheel B (8) can both alter by the flow value of static two acting balancing valve, when the aperture of handwheel A (11) is fixed, adjusting handle B (8) can change the pressure difference before and after flap A (15), namely changes the pressure difference (Δ P=P1-P2) measured by pressure obtaning device A (17) and pressure obtaning device B (14).
Static two acting balancing valve often plants specification the flow control scope matched, and when carrying out Plant model selection, should ensure that required flow is in selected specifications control range of flow as far as possible.
One, static two acting balancing valve adopts concrete grammar and the step of diagram method debugging traffic:
1, clear and definite required flow value, i.e. the target flow value (Q) that the two acting balancing valve of debugging static state will reach;
2, on the debugging chart of Fig. 3, find the aperture-flow-pressure differential characteristic curve (selection one is relatively mild as far as possible) that can reach required flow, according to the aperture of the opening indicator device display on handwheel A (11), handwheel A (11) is rotated to the aperture that selectivity characteristic curve is corresponding;
3, according to aperture-flow-pressure differential characteristic curve that debugging chart has been selected, reading y coordinate on this curve is the abscissa that required flow value is corresponding, i.e. required pressure difference (Δ P);
4, differential pressure gauge is connected with pressure obtaning device A (17) and pressure obtaning device B (14), reads the pressure difference of differential pressure gauge display;
5, adjusting handle B (8), observes the pressure difference of differential pressure gauge display, until differential pressure gauge display pressure difference equals required pressure difference (Δ P).
Now fluid just reaches required flow value (target flow value Q) by the flow value of static two acting balancing valve, debugs complete.
Two, static two acting balancing valve adopts concrete grammar and the step of intelligence software method debugging traffic:
1, clear and definite required flow value, i.e. the target flow value (Q) that the two acting balancing valve of debugging static state will reach;
2, in intelligence software, select the specification of static two acting balancing valve, enter next step;
3, input in intelligence software: target flow value, enter next step;
4, according to handwheel A (11) opening value that intelligence software provides, the aperture of handwheel A (11) is adjusted to the right place, enters next step;
5, intelligence software provides the pressure difference (Δ P) that pressure obtaning device A (17) and pressure obtaning device B (14) needs;
6, differential pressure gauge is connected with pressure obtaning device A (17) and pressure obtaning device B (14);
7, adjust handwheel B (8), observe the pressure difference of differential pressure gauge display, until differential pressure gauge display pressure difference equals required pressure difference (Δ P).
Now fluid just reaches required flow value (target flow value Q) by the flow value of static two acting balancing valve, debugs complete.
Three, static two acting balancing valve adopts concrete grammar and the step of portable instrument method debugging traffic:
1, clear and definite required flow value, i.e. the target flow value (Q) that the two acting balancing valve of debugging static state will reach;
2, in portable instrument, select the specification of static two acting balancing valve, enter next step;
3, input in portable instrument: target flow value, enter next step;
4, according to handwheel A (11) opening value that portable instrument provides, the aperture of handwheel A (11) is adjusted to the right place, enters next step;
5, portable instrument display present flow rate value, the aperture of adjustment handwheel B (8), until the present flow rate value of portable instrument display equals target flow value (Q), debugs complete.
Fig. 2 is the combination set of the valve shaft of static two acting balancing valve, flap, upper cover, entirety is unidirectional coaxial configuration, wherein except upper cover, other part and valve interior wall are all without close contact, and gap is very large, in actual use, when needing demolition and maintenance, directly can open upper cover, easily inner body all be taken out, there will not be the situation that valve inner part and valve body adhesion, action frictional force are excessive.
Fig. 3 is the debugging chart schematic diagram of static two acting balancing valve, axis of abscissas is pressure reduction [pressure difference measured by pressure obtaning device A (17) and pressure obtaning device B (14)], axis of ordinates is flow (needing to debug the target flow value reached), the pressure reduction that the two acting balancing valve of static state due to often kind of specification is corresponding is different with range of flow, therefore horizontal stroke, axis of ordinates replace actual numerical value with the form of percentage, 10 curves are listed altogether, for handwheel A (11) is at the characteristic curve of aperture 1 to aperture 10 correspondence in system of coordinates; According to debugging chart, the aperture of known handwheel A (11), measure the pressure difference of pressure obtaning device A (17) and pressure obtaning device B (14), just can draw the flow value by static state pair acting balancing valve.
Claims (10)
1. the two acting balancing valve of static state balanced for fluid regulation and pipe network, it is characterized in that: static two acting balancing valve comprises valve body (2), valve gap (3) is equipped with on valve body (2) top, valve shaft A (9) is equipped with at valve gap (3) center, valve gap (3) bottom is provided with polygonal valve stem spacing (12), handwheel A (11) is equipped with on valve shaft A (9) top, valve shaft A (9) center is penetrating, valve shaft B (8) is housed, valve shaft A (9) bottom connects valve rod A (13), flap A (15) is equipped with in valve rod A (13) bottom, flap A (15) can along valve shaft valve shaft A (9) axial action, the aperture of adjusted head piece A (21), its aperture can be observed by the valve position (10) of handwheel A (11), valve rod B (16) is equipped with in valve shaft B (8) bottom, flap B (18) is equipped with in valve rod B (16) bottom, adjusting handle B (7) can change flap B (18) and the aperture crossing head piece B (20), pressure obtaning device A (17) and pressure obtaning device B (14) can external pressure gauge differential pressure meter, read pressure difference, during to static two acting balancing valve debugging traffic, the pressure difference utilizing pressure obtaning device A (17) and pressure obtaning device B (14) outer relay table differential pressure meter to read and the valve position value of handwheel A (11), coordinate special debugging chart, adjusting handle B (7) can obtain required flow.
2. the two acting balancing valve of static state according to claim 1, it is characterized in that: between the outside of polygonal valve stem spacing (12) and valve body (2) inner chamber, there is comparatively wide arc gap, be sliding friction inside it and between valve rod A (13), gap is less, lubrication filler can be added, polygonal valve stem spacing (12) inner side limits valve rod A (13) with the rotation certainly as axle, valve rod A (13) can only be moved vertically, the aperture of modified head piece B (20).
3. the two acting balancing valve of static state according to claim 1, it is characterized in that: the center of flap A (15) is provided with polygonal spacing hole slot, and the gap between valve rod B (16) is less, for sliding friction, greasing substance can be filled in gap, polygonal spacing hole slot limits valve rod B (16) with from the rotation as axle, valve rod B (16) can only be moved vertically, the aperture of modified head piece A (21).
4. the two acting balancing valve of static state according to claim 1, it is characterized in that: the force value that head piece A upstream can be measured by pressure obtaning device A (17), the force value in head piece A downstream can be measured by pressure obtaning device B (14), pressure obtaning device A (17) and pressure obtaning device B (14) possesses self-sealing function, and needing to dock with it with special joint could by static two acting balancing valve interior media and pressure instrumentation UNICOM.
5. the two acting balancing valve of static state according to claim 1, is characterized in that: described debugging chart, can make electronic chart, by mobile phone, panel computer display.
6. the two acting balancing valve of static state according to claim 1, is characterized in that: the pressure difference utilizing debugging icon table and pressure obtaning device A (17) to record with pressure obtaning device B (14), can check in the flow value by static two acting balancing valve.
7. the two acting balancing valve of static state according to claim 1, it is characterized in that: described static equilibrium spool is unidirectional coaxial double-valve structure, without the need to arranging bottom flange, whole spool can take out from top, can realize the cleaning under installment state, maintenance.
8. the two acting balancing valve of static state according to claim 1, it is characterized in that: described flap A (15) and flap B (18) are stopper flap, flap A (15) can seal with crossing head piece A (21), flap B (18) can seal with crossing head piece B (20), and static two acting balancing valve possesses dual turn-off function.
9. the two acting balancing valve of static state according to claim 1, it is characterized in that, described handwheel A (11) and handwheel B (7) can install self-locking device, handwheel A (11) and handwheel B (7) can be locked in required aperture, need private key to unlock the aperture that could change handwheel A (11) and handwheel B (7).
10. the two acting balancing valve of static state according to claim 1, is characterized in that: described valve shaft A (9) can be connected with final controlling element with valve shaft B (8), the flow value passed through by the static two acting balancing valve of control system setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696976.2U CN204512440U (en) | 2014-11-18 | 2014-11-18 | Static two acting balancing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696976.2U CN204512440U (en) | 2014-11-18 | 2014-11-18 | Static two acting balancing valve |
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| Publication Number | Publication Date |
|---|---|
| CN204512440U true CN204512440U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420696976.2U Withdrawn - After Issue CN204512440U (en) | 2014-11-18 | 2014-11-18 | Static two acting balancing valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN204512440U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534102A (en) * | 2014-11-18 | 2015-04-22 | 北京天箭星机电技术有限公司 | Static double dynamic balance valve and debugging method thereof |
| CN105698455A (en) * | 2016-03-14 | 2016-06-22 | 宁波松鹰汽车部件有限公司 | Device for controlling opening degree of expansion valve |
-
2014
- 2014-11-18 CN CN201420696976.2U patent/CN204512440U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534102A (en) * | 2014-11-18 | 2015-04-22 | 北京天箭星机电技术有限公司 | Static double dynamic balance valve and debugging method thereof |
| CN104534102B (en) * | 2014-11-18 | 2017-05-17 | 北京天箭星机电技术有限公司 | Static double dynamic balance valve and debugging method thereof |
| CN105698455A (en) * | 2016-03-14 | 2016-06-22 | 宁波松鹰汽车部件有限公司 | Device for controlling opening degree of expansion valve |
| CN105698455B (en) * | 2016-03-14 | 2024-04-05 | 宁波松鹰汽车部件有限公司 | Expansion valve opening control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150729 Effective date of abandoning: 20170517 |
|
| AV01 | Patent right actively abandoned |