CN202674436U - Combined pressure reducing valve - Google Patents
Combined pressure reducing valve Download PDFInfo
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- CN202674436U CN202674436U CN 201220362217 CN201220362217U CN202674436U CN 202674436 U CN202674436 U CN 202674436U CN 201220362217 CN201220362217 CN 201220362217 CN 201220362217 U CN201220362217 U CN 201220362217U CN 202674436 U CN202674436 U CN 202674436U
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- valve
- reponse system
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- way switch
- blowoff
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Abstract
The utility model discloses a novel combined pressure reducing valve, which substantially comprises a valve body (1) and a valve cover (2) which are arranged to be an integrated body, wherein an inlet end of the valve body (1) is connected with a high pressure end three-way switching valve (12) through a feedback system inlet pipe (11), an outlet end of valve body (1) is connected with a low pressure end three-way switching valve (14) through a feedback system outlet pipe (13), two sets of feedback control systems which are the same and are symmetrical are arranged between the high pressure end three-way switching valve (12) and the low pressure end three-way switching valve (14), an union (19) which is designed on a pipeline connecting position which is connected with a feedback system 1 or a feedback system 2 is arranged between the high pressure end three-way switching valve (12) and the low pressure end three-way switching valve (14), and the union (19) is also designed between a jet pump (15) and a maintenance ball valve (18) which are arranged between the feedback system 1 and the feedback system 2. The novel combined pressure reducing valve has the functions of pressure reduction, pressure stabilization and no-stop back washing pollution discharge of the feedback systems, and further has the advantages of rapid and convenient maintenance.
Description
Technical field
The utility model belongs to improved reduction valve, specifically a kind of Combined pressure reducing valve of new generation.
Background technique
In the water power plant of high head, the water at each position of hydraulic generator unit and the cooling of each watering equipment, the water that makes lubricated and fire-fighting water be the lower constant voltage of pressure, for guaranteeing the lower constant voltage of this technical water supply, must install reduction valve additional to achieve the goal at the equipment importation place.Such as Chinese model utility notice of authorization CN2520443Y on November 13rd, 2002, disclosed reponse system pilot control, pressure compensation safety protection self-operating pressure reducing valve are exactly that the applicant is designed for the technological scheme that solves this technical problem in early days.This technological scheme has valve body 1, valve gap 2 forms integral body, and locking pull bar 3 is equipped with in its central authorities; Outside valve gap 2, locking nut 4, valve body 1 adjustable lever 5 are equipped with in locking pull bar 3 tops; In valve gap 2, on the locking pull bar 3 spring seat 6, main spring 7 are housed, under locking pull bar 3 bottoms, cylinder sleeve valve seat 8 and main piston 9 are housed, throttling cone 10 is arranged at the bottom; Valve body 1 entrance point has reponse system inlet tube 11 to connect high voltage terminal three-way switch valve 12, and valve body 1 outlet end has reponse system outer pipe 13 to connect low voltage terminal three-way switch valve 14; Having two cover feedback control systems of identical symmetry between the described high and low pressure side three-way switch valve, namely is reponse system one and reponse system two; Described reponse system one or reponse system two are comprised of the Jet injector 15, three-way blowoff valve 16, control valve 17 and the pipeline that connect successively; Jet injector 15 1 termination high voltage terminal three-way switch valves 12 wherein, another end is led to three-way blowoff valve 16, and three-way blowoff valve 16 connects low voltage terminal three-way switch valve 14 by control valve 17; The 3rd outlet of three-way blowoff valve 16 connects Blowoff ball valve; Described Jet injector 15 also has an outlet by in maintenance ball valve 18, the pipeline access valve body 1, is connected with 9 times side spaces of main piston of cylinder sleeve valve seat 8.Although the structure of this technological scheme has possessed decompression; voltage stabilizing and do not shut down recoil blowdown to reponse system; but; the factor that affects the reduction valve safe operation is a lot; stop up such as Jet injector 15 mud algaes; reponse system control valve 17 upper diaphragms are easily aging and damages of rubber parts; particularly in unit unloading and inlet pressure when larger energy can't released membrane be easy to breakdown etc.; need to change rapidly to process; the pipeline of reponse system one or reponse system two and control piece interface all are again to adopt the silk mouth to be connected to each other; change processing dismounting link many; length consuming time, unfavorable to producing.
Summary of the invention
The purpose of this utility model is to provide a kind of Combined pressure reducing valve of a new generation, and this Combined pressure reducing valve also has maintenance rapidly, easily characteristics except having possessed decompression, voltage stabilizing and not shut down the recoil dirt eliminating function to reponse system.
Combined pressure reducing valve of the present utility model mainly has valve body 1, valve gap 2 forms integral body, and locking pull bar 3 is equipped with in its central authorities; Outside valve gap 2, locking nut 4, valve body 1 adjustable lever 5 are equipped with in locking pull bar 3 tops; In valve gap 2, on the locking pull bar 3 spring seat 6, main spring 7 are housed, under locking pull bar 3 bottoms, cylinder sleeve valve seat 8 and main piston 9 are housed, throttling cone 10 is arranged at the bottom; Valve body 1 entrance point has reponse system inlet tube 11 to connect high voltage terminal three-way switch valve 12, and valve body 1 outlet end has reponse system outer pipe 13 to connect low voltage terminal three-way switch valve 14; The two cover feedback control systems that have identical symmetry between the described high and low pressure side three-way switch valve, namely be reponse system one and reponse system two, make the pressure reduction between the elastic force of the water pressure that acts on main piston 9 lower end surfaces and main spring 7 drive 10 actions of throttling cone, thereby the area of passage of control reduction valve is realized decompression and voltage stabilizing; Described reponse system one or reponse system two are comprised of the Jet injector 15, three-way blowoff valve 16, control valve 17 and the pipeline that connect successively; Jet injector 15 1 termination high voltage terminal three-way switch valves 12 wherein, another end is led to three-way blowoff valve 16, and three-way blowoff valve 16 connects low voltage terminal three-way switch valve 14 by control valve 17; The 3rd outlet of three-way blowoff valve 16 connects Blowoff ball valve; Described Jet injector 15 also has an outlet by in maintenance ball valve 18, the pipeline access valve body 1, is connected with 9 times side spaces of main piston of cylinder sleeve valve seat 8; It is characterized in that: the pipeline junction that connects reponse system one or reponse system two between above-mentioned high and low pressure side three-way switch valve all is designed with union 19; Also be designed with union 19 between Jet injector 15 in above-mentioned reponse system one and reponse system two and the maintenance ball valve 18.
The utility model is under the effect of reponse system one or reponse system two, utilize the energy of pipeline medium, pressure medium and the pressure reduction between the main spring 7 by main piston 9 lower end surfaces make 10 actions of piston driving throttling cone, valve port flow-passing surface aperture also changes thereupon, under the working condition that pressure changes and the outlet rate-of flow changes of reduction valve import high-pressure medium, come control valve body 1 constantly to change area of passage through the reponse system pilot control, thereby make the pressure of reduction valve outlet medium produce low pressure and constant.And the low pressure values that can regulate easily by reponse system the outlet medium, make it to reach user's requirement.Preventing from being unlikely to the inlet/outlet equipressure just in case lock the area of passage of reduction valve in the accident with the gap of adjusting locking nut 4 lower planes and the upper plane of adjusting nut on the protection pull bar under the reduction valve working state; Realize that with the switching of high and low pressure side three-way switch valve reponse system one and reponse system two are for subsequent use each other; Guaranteeing to greatest extent safe, stable, the reliability of reduction valve under working condition.In addition, the drainage device that forms with the three-way blowoff valve 16 of reponse system, Blowoff ball valve can also be realized the recoil blowdown under reduction valve in working order.When Jet injector 15 mud algaes are stopped up, reponse system control valve 17 upper diaphragms are easily aging and damages of rubber parts, particularly in unit unloading and inlet pressure when larger energy can't released membrane be easy to when breakdown, as long as the utility model is the extremely reponse system work for subsequent use of the high and low pressure side three-way switch valve of conversion, close the maintenance ball valve 18 on the corresponding trouble feedback system, just can take rapidly above-mentioned three unions 19 apart, realize fault treatment.
Compared with the prior art, it is few, consuming time short that the utility model is changed processing dismounting link, can not exert an influence to producing.The utility model widely is applicable to industry, city, pumping plant, power station technology water system.Working medium is the less fluids of viscosity such as water, light oil.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Description of reference numerals: 1 valve body; 2 valve gaps; 3 locking pull bars; 4 locking nut; 5 valve bodies, 1 adjustable lever; 6 spring seats; 7 main springs; 8 cylinder sleeve valve seats; 9 main pistons; 10 throttlings cone; 11 reponse system inlet tubes; 12 high voltage terminal three-way switch valves; 13 reponse system outer pipes; 14 low voltage terminal three-way switch valves; 15 Jet injectors; 16 three-way blowoff valves; 17 control valves; 18 maintenance ball valves; 19 unions.
Embodiment
Further specify general structure and the working principle of this Combined pressure reducing valve below in conjunction with accompanying drawing 1 usefulness embodiment.
Shown in accompanying drawing 1, be the structural representation of the utility model reduction valve, its working medium is water, this reduction valve is combined by the feedback pressure bucking-out system of traditional piston type valve body 1 and a new generation, is reponse system two for subsequent use in the dotted line frame.This Combined pressure reducing valve mainly has valve body 1, valve gap 2 forms integral body, and locking pull bar 3 is equipped with in its central authorities; Outside valve gap 2, locking nut 4, valve body 1 adjustable lever 5 are equipped with in locking pull bar 3 tops; In valve gap 2, on the locking pull bar 3 spring seat 6, main spring 7 are housed, under locking pull bar 3 bottoms, cylinder sleeve valve seat 8 and main piston 9 are housed, throttling cone 10 is arranged at the bottom; Valve body 1 entrance point has reponse system inlet tube 11 to connect high voltage terminal three-way switch valve 12, and valve body 1 outlet end has reponse system outer pipe 13 to connect low voltage terminal three-way switch valve 14; Having two cover feedback control systems of identical symmetry between the described high and low pressure side three-way switch valve, namely is reponse system one and reponse system two, and valve body 1 is the decompression main part, and feedback control system is the control section of valve body 1; Reduction valve is composited by these two parts.Above-mentioned feedback control system makes the pressure reduction between the elastic force of the water pressure that acts on main piston 9 lower end surfaces and main spring 7 drive 10 actions of throttling cone, thereby the area of passage of control reduction valve is realized decompression and voltage stabilizing; Described reponse system one or reponse system two are comprised of the Jet injector 15, three-way blowoff valve 16, control valve 17 and the pipeline that connect successively; Jet injector 15 1 termination high voltage terminal three-way switch valves 12 wherein, another end is led to three-way blowoff valve 16, and three-way blowoff valve 16 connects low voltage terminal three-way switch valve 14 by control valve 17; The 3rd outlet of three-way blowoff valve 16 connects Blowoff ball valve; Described Jet injector 15 also has an outlet by in maintenance ball valve 18, the pipeline access valve body 1, is connected with 9 times side spaces of main piston of cylinder sleeve valve seat 8; By operation maintenance ball valve 18, three-way blowoff valve 16 parts, can effectively with outside the dirt discharge system in the control valve, not affect the operating mode of reduction valve simultaneously.It is characterized in that: the pipeline junction that connects reponse system one or reponse system two between above-mentioned high and low pressure side three-way switch valve all is designed with union 19; Also be designed with union 19 between Jet injector 15 in above-mentioned reponse system one and reponse system two and the maintenance ball valve 18.
As shown in Figure 1, P1 is the inlet pressure of reduction valve, and P2 is the outlet pressure of reduction valve, and when inlet/outlet formed flow, in valve body 1, the pressure of h and Pk reached balance; Pressure in control valve 17 reaches balance.At this moment, the valve seat of control valve and flap Lift are definite values, and namely area of passage is certain.At this moment, reduction valve has limited the large flow when inlet pressure is P1; Outlet pressure is a low voltage value P2 relatively.When inlet pressure P1 changes, outlet pressure P2 is constant, working principle is as follows: when inlet pressure P1 rises, the outlet pressure P2 of reduction valve at first shows as rising, and the P2 value of rising passes to control valve (17) by reponse system outer pipe 13, and the Pk of control valve (17) is increased, the pressure of Pt and Pk reaches new balance, h reduces, and namely the area of passage of valve body 1 reduces, and the P2 value of rising reverts to initial value.When inlet pressure P1 descended, then the operating mode with above-mentioned was opposite for the operating mode of valve body 1 and control valve.
When control valve is equipped with in the outlet port of reduction valve, and control valve when closing the operating mode of reduction valve be: the Pk value of reponse system control valve increases, until valve closing.After control valve was closed, the Pk value of valve body 1 increased, and the pressure P t that the Pk value of increase overcomes rapidly main spring 7 closes valve body 1; Therefore, the outlet pressure of the reduction valve behind the autoshutdown is still the low pressure of an a little higher than P2 value.When the control valve of outlet port P2 reopened, reduction valve recovered initial operating mode.
Above-mentioned reponse system working principle: under the reponse system nominal situation; The operating mode of three-way blowoff valve is the normal position.Current flow to from reponse system inlet tube 11, to control valve 17 imports, form loops through filter screen to the reponse system outer pipe 13 of control valve 17 through Jet injector 15 and three-way blowoff valve 16.Another road is through Jet injector 15 and overhaul ball valve 18 to valve body 1 piston below.When the filter net jam of control valve 17 surpassed to a certain degree, the pressure of control valve 17 imports can raise, and caused the Pk value of valve body 1 to raise, and the area of passage of valve body 1 reduces, and outlet pressure P2 reduces.At this moment, as long as recoil blowdown operation, it is normal that system just can recover.Operate as follows: at first, close maintenance ball valve 18, because main piston below pressure chamber is closed the incompressibility with water, valve body 1 interior valve seat is constant with the area of passage of flap unlatching, and the P2 value of reduction valve is still a low pressure; Secondly, with high voltage terminal three-way switch valve 12 90-degree rotations, the forward current of reponse system are closed; Again three-way blowoff valve 16 90-degree rotations and Blowoff ball valve are opened; Under the effect of reduction valve outlet pressure P2, current are reverse, and control valve 17 outlet becomes imports, and current outwards, outside three-way blowoff valve 16 discharge systems, are taken away simultaneously and are attached to the outer impurity of filter screen in the filter screen; At last, three-way blowoff valve 16 derotations turn 90 degrees and close Blowoff ball valve, 12 derotations of high voltage terminal three-way switch valve turn 90 degrees, open the sequential operation of overhauling ball valve 18 by closing, and it is normal that reponse system is recovered.
Because the independence of reduction valve reponse system, for guaranteeing the safety reliability of reduction valve, reduction valve can adopt two reponse systems fully.A cover reponse system is as primary when reduction valve is worked, and another set of reponse system is as for subsequent use; When primary system breaks down, by shirtsleeve operation, just can drop into standby system, do not affect the operating mode of reduction valve; Failure system can keep in repair under the operating mode of reduction valve, keeps in repair completely, can be used as again for subsequent use.The each other safety reliability that guarantees the reduction valve operation in the limit of maximum for subsequent use of this system.Its service work principle is as follows:
The high voltage terminal three-way switch valve 12 at reponse system one two ends, be in the normal position with low voltage terminal three-way switch valve 14, reponse system one maintenance ball valve 18 is in opens operating mode, reponse system two maintenance ball valves 18 are in closes operating mode, when the Jet injector 15 mud algaes of reponse system one are stopped up, reponse system control valve 17 upper diaphragms are easily aging and damages of rubber parts, particularly in unit unloading and inlet pressure when larger energy can't released membrane be easy to when breakdown, the utility model is as long as conversion is high, the low voltage terminal three-way switch valve is to reponse system two work for subsequent use, close the maintenance ball valve 18 on the corresponding trouble feedback system one, just can take rapidly above-mentioned three unions 19 apart, realize fault treatment.
When the safety locking technology of this reduction valve is under the very bad working environments that two reponse systems are all damaged fully, punctured, safe locking device drops into automatically, with the area of passage rigid locking of reduction valve, prevent that effectively the outlet low pressure of reduction valve from rising to the technology of high pressure.The safe locking device of reduction valve is comprised of locking pull bar 3, locking nut 4, adjustable lever 5 and main piston 9.Under nominal situation, through adjusting locking nut 4, make below it and leave a suitable space L above the adjustable lever 5.During the reduction valve normal operation, locking pull bar 3 is unloaded, does not affect nominal situation.
When primary, when entirely being broken down by high-voltage with reponse system because the decompression of Pk, the aperture of throttling cone 10 and valve seat is maximum value under the large rigidity pressure of main spring (8), the P1 of this moment, P2 pressure equates, high pressure water can destroy watering equipment.Because this reduction valve is equipped with safe locking device, so when above-mentioned operating mode occurring, space L disappears automatically, the aperture of throttling cone 10 and valve seat is limited to be locked in certain position, and a little higher than former pressure of P2 pressure has been protected the safety of watering equipment.
Claims (1)
1. a Combined pressure reducing valve mainly has valve body (1), valve gap (2) composition integral body, and locking pull bar (3) is equipped with in its central authorities; Outside valve gap (2), locking nut (4), main valve adjustable lever (5) are equipped with in locking pull bar (3) top; In valve gap (2), on the locking pull bar (3) spring seat (6), main spring (7) are housed, under locking pull bar (3) bottom, cylinder sleeve valve seat (8) and main piston (9) are housed, throttling cone (10) is arranged at the bottom; Valve body (1) entrance point has reponse system inlet tube (11) to connect high voltage terminal three-way switch valve (12), and valve body (1) outlet end has reponse system outer pipe (13) to connect low voltage terminal three-way switch valve (14); Having two cover feedback control systems of identical symmetry between the described high and low pressure side three-way switch valve (13,14), namely is reponse system one and reponse system two; Described reponse system one or reponse system two are comprised of the Jet injector (15), three-way blowoff valve (16), control valve (17) and the pipeline that connect successively; Jet injector (15) one termination high voltage terminal three-way switch valves (12) wherein, another end is led to three-way blowoff valve (16), and three-way blowoff valve (16) connects low voltage terminal three-way switch valve (14) by control valve (17); The 3rd outlet of three-way blowoff valve (16) connects Blowoff ball valve; Described Jet injector (15) also has an outlet by in maintenance ball valve (18), the pipeline access valve body (1), is connected with the lower side space of the main piston (9) of cylinder sleeve valve seat (8); It is characterized in that: the pipeline junction that connects reponse system one or reponse system two between above-mentioned high and low pressure side three-way switch valve (13,14) all is designed with union (19); Also be designed with union (19) between Jet injector (15) in above-mentioned reponse system one and reponse system two and the maintenance ball valve (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220362217 CN202674436U (en) | 2012-07-25 | 2012-07-25 | Combined pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220362217 CN202674436U (en) | 2012-07-25 | 2012-07-25 | Combined pressure reducing valve |
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| Publication Number | Publication Date |
|---|---|
| CN202674436U true CN202674436U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220362217 Expired - Fee Related CN202674436U (en) | 2012-07-25 | 2012-07-25 | Combined pressure reducing valve |
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| CN (1) | CN202674436U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335142A (en) * | 2013-07-22 | 2013-10-02 | 郴州市东塘电气设备有限公司 | Feedback self-operated reducing valve of water-turbine generator set |
| CN105485389A (en) * | 2014-10-13 | 2016-04-13 | 湘潭中基电站辅机制造有限公司 | Piston type pressure reducing valve |
| CN110811287A (en) * | 2018-08-10 | 2020-02-21 | 佛山市爱米吧科技有限公司 | Anti-rotation-blockage control system of grain quantifying mechanism, electric cooker and anti-rotation-blockage control method |
-
2012
- 2012-07-25 CN CN 201220362217 patent/CN202674436U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335142A (en) * | 2013-07-22 | 2013-10-02 | 郴州市东塘电气设备有限公司 | Feedback self-operated reducing valve of water-turbine generator set |
| CN103335142B (en) * | 2013-07-22 | 2015-06-24 | 郴州市东塘电气设备有限公司 | Feedback self-operated reducing valve of water-turbine generator set |
| CN105485389A (en) * | 2014-10-13 | 2016-04-13 | 湘潭中基电站辅机制造有限公司 | Piston type pressure reducing valve |
| CN110811287A (en) * | 2018-08-10 | 2020-02-21 | 佛山市爱米吧科技有限公司 | Anti-rotation-blockage control system of grain quantifying mechanism, electric cooker and anti-rotation-blockage control 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 |
Granted publication date: 20130116 Termination date: 20140725 |
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| EXPY | Termination of patent right or utility model |