CN207975295U

CN207975295U - Dynamic balance valve

Info

Publication number: CN207975295U
Application number: CN201820228531.XU
Authority: CN
Inventors: 马春波
Original assignee: Beijing Jull Control Valves Co Ltd
Current assignee: Beijing Jull Control Valves Co Ltd
Priority date: 2018-02-08
Filing date: 2018-02-08
Publication date: 2018-10-16
Anticipated expiration: 2028-02-08

Abstract

The utility model discloses a kind of dynamic balance valves, are related to air-conditioning technical field, its key points of the technical solution are that including valve body, offer chamber in the valve body, valve seat is provided in chamber；Movement is provided with adjusting part in the chamber being connected to water inlet, and the circulation area of adjustment valve is coordinated by adjusting part and valve seat；It is provided with dynamic equilibrium component in the chamber being connected to water outlet, the dynamic equilibrium component includes cage sleeve, medium inlet is offered at the top of cage sleeve, media outlet is offered on circumferential side wall, the cage sleeve internal activity is connected with dynamic spool, media outlet is blocked or opened by dynamic spool, ensure that the operting differential pressure before and after adjusting part is constant, to realize the constant of flow.The dynamic balance valve of the utility model can be in complicated multi-loop system, it is easier to reach balance and auto-control energy-saving state.

Description

Dynamic balance valve

Technical field

The utility model is related to air-conditioning technical field, more particularly to a kind of dynamic balance valve.

Background technology

In heating ventilation air-conditioning system, hydraulic misadjustment is FAQs, and to solve the unreasonable of loop traffic in reality, The method that generally use improves pump head, but can further make energy distribution uneven, cause the waste of bigger；Along in order to Energy-saving and emission-reduction and the end automatic control class valve being arranged, more exacerbate the hydraulic misadjustment phenomenon of system.

Valve anthority existing for traditional electric control valve itself has affected the precision of automation control compared with minor issue, then In addition static state hydraulic disorder problem, dynamic state hydraulic disorder problem, lift increase problem, pressure oscillation problem, it is more degrading adjusting The control characteristic of valve.

Although also having many static balancing valves, dynamic differential pressure valve, dynamic flow valve, electric control valve etc. more in reality Kind of valve uses in concrete engineering, but because the convenience etc. of the consistency of construction, the matching of each product, construction many is asked Topic exists.

In short, only could the metering of not only energy saving but also end on the basis of accurately controlling.

Utility model content

The purpose of this utility model is to provide a kind of dynamic balance valves, it can appoint in complicated multi-loop system The adjusting variation of what loop will not all have an impact other loops, form multiple pressure-independent duplexures, more It is easy to reach balance and auto-control energy-saving state.

The above-mentioned purpose of the utility model technical scheme is that：

A kind of dynamic balance valve, including valve body, offering in the valve body allows medium to be flow to from the water inlet of balanced valve The chamber of water outlet is provided with valve seat in the chamber of the valve body；Movement is provided with tune in the chamber being connected to water inlet Component is saved, the adjusting part includes valve rod and the manual spool, the electronic spool that are connected on valve rod, passes through manual spool, electricity The circulation area of movable valve plug and valve seat cooperation adjustment valve；It is provided with dynamic equilibrium group in the chamber being connected to water outlet Part, the dynamic equilibrium component include cage sleeve, and medium inlet is offered at the top of cage sleeve, is offered on circumferential side wall Media outlet, the cage sleeve internal activity is connected with dynamic spool, between the top and dynamic spool of the cage sleeve It is provided with elastic component, cladding is provided with flexible sheet on the dynamic spool, and the bottom of the cage sleeve is fixedly connected with close Sealing end lid, the periphery sealing of the flexible sheet is between cage sleeve and end cover, the flexible sheet and end cover Between there are cavitys；The high pressure chest for being connected to hydraulic power source, flexible sheet and sealing are equipped between the end cover and valve body Cavity between end cap is connected to the high pressure chest.

By using above-mentioned technical proposal, dynamic spool cooperatively forms low pressure chamber, dynamic balance valve work with cage sleeve When, first the valve rod of adjusting part is driven to detach manual spool and electronic spool with valve seat, flow enters from water inlet, flows through dynamic The low pressure chamber of state balanced component, then flowed out from its media outlet, finally it is discharged from the water outlet of valve body；Flow is flowed into from water inlet While applying intake pressure to dynamic spool in dynamic equilibrium component, hydraulic power source, which applies dynamic spool by high pressure chest, to be balanced Pressure, flexible sheet float up and down according to the variation of high pressure cavity pressure and low pressure cavity pressure, to drive dynamic spool to medium Outlet is blocked or is opened, and ensure that the operting differential pressure before and after adjusting part is constant, i.e. water inlet and cage sleeve medium enters Operting differential pressure between mouthful is constant, to realize the constant of flow.

The utility model is further arranged to：Adjusting part setting in valve body is suitable for reading, valve body it is suitable for reading detachable It is fixedly connected with sealing cover, the valve rod is threaded through on sealing cover, and the lower end of valve rod is connected with manual spool and electronic spool, institute The shape for stating manual spool and electronic spool is to be no less than the circular sleeve of half circle, and the manual spool is located at motor-driven valve Core inner and being turned round with it is connect, and fixed flange is extended in manual spool one end circumferentially, the direction for facing away from its axis, For the end abutment of fixed flange and electronic spool with the rotation of limit manual spool, manual spool is bonded setting with electronic spool.

By using above-mentioned technical proposal, sealing cover is used for valve body closing suitable for reading, while the work of support is played to valve rod With；With the rotation of limit manual spool, manual spool is bonded with electronic spool and sets the end abutment of fixed flange and electronic spool It sets, contacts to form closed cavity after the fixed flange of manual spool is abutted with electronic spool, then with valve seat, limit flow By valve body.

The utility model is further arranged to：The manual spool is fixedly connected with valve rod, the electronic spool and valve rod Revolution connection, the sealing cover play the role of limit to electronic spool, make it that can only up and down reciprocatingly be transported along axis with valve rod It is dynamic；The center position of the manual spool offers connecting hole, the end profiles setting that the valve rod is connect with manual spool To be adapted with connecting hole.

By using above-mentioned technical proposal, valve rod drives manual spool and electronic spool same while reciprocating motion along axis Step movement, axially varying window interval size between manual spool and electronic spool and valve seat；Valve rod rotates to drive Manual Spool rotating circumferentially changes window interval size；Change window size by axial and circumferential, realizes balanced valve circulation The adjusting of area.

The utility model is further arranged to：The input terminal of the valve rod is connected with Electric Actuator.

By using above-mentioned technical proposal, when driving stem movement by Electric Actuator, motion process smooth flow, more Easily accurately control.

The utility model is further arranged to：The input terminal of the valve rod is fixedly connected with manual aperture rotary indicator, institute It states and is provided with manual aperture locking nut above manual aperture rotary indicator.

By using above-mentioned technical proposal, make valve rod that can also be driven by manual aperture rotary indicator, to balanced valve Circulating window carry out circumferential adjusting；When being adjusted circumferentially, it can also pass through manual aperture rotary indicator observation window circumferential direction The size of aperture；The rotary freedom of manual aperture rotary indicator is controlled by manual aperture locking nut.

The utility model is further arranged to：Resetting spring is arranged on the valve rod, the resetting spring is close to manually One end of aperture rotary indicator is fixedly connected with mounting plate, and mounting plate is fixed on valve rod, the resetting spring it is another End is connected on valve body.

By using above-mentioned technical proposal, manual aperture rotary indicator driving stem can pass through after axis moves downward The elastic force of resetting spring drives valve rod to reset upwards, reduces actuator and valve rod connection procedure, keeps connection simpler, and volume is more Compact, adjustment process is more convenient.

The utility model is further arranged to：The top of the cage sleeve is abutted with valve seat, and the elastic component is pressure difference Spring, the support base of the pressure spring are mounted on top, the side away from valve seat of cage sleeve, the free end of pressure spring It is connected on the bearing of dynamic spool.

By using above-mentioned technical proposal, pressure spring provides elastic force for dynamic spool origination action, this elastic force determines The starting operting differential pressure of dynamic spool makes the constant work in pressure spring of pressure difference for the high pressure chest and low pressure chamber that dynamic spool is subject to Make in range, after the dynamic balance relation between the pressure difference of high and low pressure chamber and the elastic force of pressure spring determines the displacement of dynamic spool Specific location, this position determines the opening size of dynamic spool.

The utility model is further arranged to：The dynamic spool is the tubular structure of open at one end, opening direction pressure Poor spring setting, shape and size are adapted to the inside of cage sleeve, and inside and the cage sleeve of the dynamic spool coordinate shape It is connected at low pressure chamber and with medium inlet.

By using above-mentioned technical proposal, dynamic spool, which is set as tubular, more fully to be gone out the medium on cage sleeve Mouth is blocked；Dynamic spool is slidably matched with cage sleeve, and the friction resistance being subject to during sliding in cage sleeve Power very little is the necessary condition of high sensitivity.

The utility model is further arranged to：The utility model is further arranged to：The dynamic equilibrium component is mounted on In the lower mouth of valve body, the lower mouth of valve body by bottom cover block and plays the role of supporting fixed, bottom to dynamic equilibrium component There are appropriate interval between lid and dynamic equilibrium component, high pressure chest is formed；Stepped hole, the rank are provided under the valve body at mouth Annular pilot slot is offered on terraced hole, the water inlet of the valve body offers pressure guide hole, and pilot slot passes through pressure guide hole and water inlet Mouth connection；The bottom cover is equipped with intercommunicating pore, and the high pressure chest between bottom cover and dynamic equilibrium component is made to be connected to pilot slot.

By using above-mentioned technical proposal, pressure guide hole, intercommunicating pore imported into intake pressure in high pressure chest, flexible sheet root It floats up and down according to the variation of high pressure cavity pressure and low pressure cavity pressure, to drive dynamic spool to block or beat media outlet It opens；The setting of pilot grooved ring shape makes bottom cover and valve body using being threadedly coupled or when other connect, the intercommunicating pore and pilot slot of bottom cover without Rotation angle requires to be connected to.

The utility model is further arranged to：Pressure measuring tie-in group is separately installed at the inlet and outlet of the valve body Part.

By using above-mentioned technical proposal, pressure measuring tie-in component measures the inlet and outlet pressure of balanced valve.

In conclusion the utility model has the advantages that：

1, by the way that adjusting part is arranged in valve body, axial and circumferential change manual spool and electronic spool and valve seat Between window size, realize balanced valve circulation area adjusting；

2, by the way that dynamic equilibrium component is arranged in valve body, the flexible sheet in dynamic equilibrium component is according to high pressure cavity pressure Variation with low pressure cavity pressure floats up and down, and to drive dynamic spool to block or open media outlet, ensure that tune Operting differential pressure before and after section component is constant, i.e., the operting differential pressure between water inlet and cage sleeve medium inlet is constant, to real The constant of flow is showed；

3, by opening up annular pilot slot on valve body, when bottom cover being made to use threaded connection or other to connect with valve body, bottom Angle requirement can be connected to the intercommunicating pore of lid without spin with pilot slot.

Description of the drawings

Fig. 1 is the schematic diagram that dynamic balance valve is closed in embodiment 1；

Fig. 2 is the schematic diagram that dynamic balance valve is in open state in embodiment 1；

Fig. 3 is that manual spool is in small guide vane status diagram in embodiment 1；

Fig. 4 is that manual spool is shown in a fully open operation schematic diagram in embodiment 1；

Fig. 5 is the axonometric drawing of dynamic balance valve in embodiment 1.

In figure, 1, valve body；11, water inlet；12, valve seat；13, water outlet；14, pressure guide hole；15, pilot slot；2, sealing cover； 3, adjusting part；31, valve rod；32, manual spool；321, fixed flange；33, electronic spool；34, manual aperture rotary indicator； 35, manual aperture locking nut；36, resetting spring；361, mounting plate；4, bottom cover；41, intercommunicating pore；5, dynamic equilibrium component； 51, cage sleeve；511, medium inlet；512, media outlet；52, pressure spring；53, dynamic spool；54, flexible sheet；55、 End cover；551, via；6, pressure measuring tie-in component.

Specific implementation mode

The utility model is described in further detail below in conjunction with attached drawing.

Embodiment 1：A kind of dynamic balance valve, as shown in Figure 1, including having that medium is allowed to flow from the water inlet 11 of balanced valve To the valve body 1 of the chamber of water outlet 13, water inlet 11 and water outlet 13 are separately positioned on the both sides of valve body 1, in the chamber of valve body 1 It is provided with valve seat 12；It is movably provided with adjusting part 3 in the top of valve seat 12, the chamber being connected to water inlet 11, is led to Overregulate the circulation area that component 3 coordinates adjustment valve with valve seat 12；Positioned at valve seat 12 lower section, the chamber that is connected to water outlet 13 Dynamic equilibrium component 5, dynamic equilibrium component 5 and 1 spaced formation high pressure chest of valve body, dynamic equilibrium component 5 are provided in room It is connected to the high pressure chest, high pressure chest is communicated with hydraulic power source；By the pressure difference between inlet and outlet, dynamic equilibrium component 5 is made to adjust automatically The aperture for saving water outlet 13, ensure that the constant of inlet outlet pressure differential, to realize the constant of flow.

As shown in Figure 1 and Figure 2,1 place suitable for reading of valve body, which is detachably fixed, is connected with sealing cover 2, and adjusting part 3 includes being threaded through Valve rod 31 on sealing cover 2, sealing cover 2 will play the role of support while 1 closure suitable for reading of valve body to valve rod 31.

The lower end of valve rod 31 is connected with manual spool 32 and electronic spool 33, as shown in Figure 3, Figure 4, manual spool 32 and electricity The shape of movable valve plug 33 is the circular sleeve of no less than half circle, wherein manual spool 32 is located at 33 inside of electronic spool simultaneously It turns round and connect with it, fixed flange 321 is extended in the one end circumferentially of manual spool 32, the direction for facing away from its axis, Gu Flange 321 is determined with the end abutment of electronic spool 33 with the rotation of limit manual spool 32, manual spool 32 and electronic spool 33 Fitting setting；It contacts to form envelope after the fixed flange 321 of manual spool 32 is abutted with electronic spool 33, then with valve seat 12 Close cavity.

The center position of manual spool 32 offers square attaching apertures, can also set connecting hole to other according to demand Shape, such as rectangle, triangle；The end profiles that valve rod 31 is connect with manual spool 32 are set as being adapted with connecting hole, and two The chimeric realization valve rod 31 of person is fixedly connected with manual spool 32；Electronic spool 33 is connected with the revolution of valve rod 31, and sealing cover 2 is to electricity Movable valve plug 33 plays the role of limit, makes it that can only pump along axis with valve rod 31（Such as on electronic spool 33 The sliding slot being distributed along 31 axis direction of valve rod is offered, the restriction protrusion coordinated with sliding slot is provided on electronic spool 33）.

Valve rod 31 can be by the Electric Actuator of Direct Travel（It is not shown in figure）Or the driving device driving of other Direct Travels, valve Bar 31 drives manual spool 32 and electronic spool 33 to move synchronously while reciprocating motion along axis, axially varying manual spool Window interval size between 32 and electronic spool 33 and valve seat 12 realizes the adjusting of balanced valve circulation area.

As shown in Figure 1, the upper end of valve rod 31 is fixedly connected with manual aperture rotary indicator 34, make valve rod 31 that can also pass through hand Dynamic aperture rotary indicator 34 is driven, and circumferential preconditioning is carried out to the circulating window of dynamic balance valve；It is adjusted circumferentially When, it can also pass through the size of 34 observation window circumferential direction aperture of manual aperture rotary indicator；The top of manual aperture rotary indicator 34 It is provided with manual aperture locking nut 35, the rotary freedom of manual aperture rotary indicator 34 is controlled by manual aperture locking nut 35 System.

It is arranged with resetting spring 36 on valve rod 31, between sealing cover 2 and manual aperture rotary indicator 34, resetting spring 36 leans on One end of nearly manual aperture rotary indicator 34 is fixedly connected with mounting plate 361, and mounting plate 361 is fixedly and coaxially connected with valve rod 31； Driving stem 31 can be driven valve rod 31 to reset upwards by the elastic force of resetting spring 36, reduce and hold after axis moves downward Row device and valve rod connection procedure, keep connection simpler, and volume is more compact, and adjustment process is more convenient.

As shown in Figure 1 and Figure 2, dynamic equilibrium component 5 is mounted in the lower mouth of valve body 1, the lower mouth of valve body 1 by bottom cover 4 into Row blocks and to play the role of support to dynamic equilibrium component 5 fixed, and there are between appropriate between bottom cover 4 and dynamic equilibrium component 5 Every formation high pressure chest；It is provided with stepped hole at 1 lower mouthful of valve body, and in stepped hole towards offering annular on the end face of valve seat 12 Pilot slot 15 offers pressure guide hole 14 at the water inlet 11 of valve body 1, is connected pilot slot 15 and water inlet 11 by pressure guide hole 14 It is logical；Bottom cover 4 is equipped with intercommunicating pore 41, and the high pressure chest between bottom cover 4 and dynamic equilibrium component 5 is made to be connected to pilot slot 15；Pilot When 15 annular setting of slot makes bottom cover 4 use threaded connection or other to connect with valve body 1, intercommunicating pore 41 and the pilot slot 15 of bottom cover 4 Angle requirement can be connected to without spin.

Dynamic equilibrium component 5 includes cage sleeve 51, and window is uniformly provided on the top of cage sleeve 51 and circumferential side wall Mouthful, at the top of window be medium inlet 511, the window on circumferential side wall is media outlet 512, the top of cage sleeve 51 with Valve seat 12 abuts, and end of the cage sleeve 51 far from valve seat 12 is fixedly connected with end cover 55；The top of cage sleeve 51, the back of the body Side from valve seat 12 is equipped with the support base of pressure spring 52, and the free end of pressure spring 52 is connected to the branch of dynamic spool 53 On seat, dynamic spool 53 is the tubular structure of open at one end, is open towards the setting of pressure spring 52, shape and size and cage The inside of sleeve 51 is adapted to, and pressure spring 52 passes through dynamic as dynamic spool 53 is together along the axial-movement of cage sleeve 51 Spool 53 blocks the size for the media outlet 512 for changing cage sleeve 51, and inside and the cage sleeve 51 of dynamic spool 53 coordinate It forms low pressure chamber and is connected to medium inlet 511.

One end cladding of dynamic spool 53 towards end cover 55 is provided with flexible sheet 54, the material choosing of flexible sheet 54 For rubber or other elastic materials；The periphery sealing of flexible sheet 54 is between cage sleeve 51 and end cover 55, elastic membrane High pressure chest is formed between piece 54 and end cover 55, via 551 is offered on end cover 55, passes through via 551 and outside High pressure chest is connected to；The movement driving force of dynamic spool 53 is：Low pressure cavity pressure+differential pressure spring force=high pressure cavity pressure, dynamic valve The frictional resistance very little that core 53 is subject to during sliding in cage sleeve 51, this is the necessary condition of high sensitivity.

When dynamic balance valve works, first drive the valve rod 31 of adjusting part 3 by manual spool 32 and electronic spool 33 and valve Seat 12 detaches, and flow enters from water inlet 11, flows through the low pressure chamber of dynamic equilibrium component 5, then flow out from its media outlet 512, Finally it is discharged from the water outlet 13 of valve body 1；Flow from 11 thermally coupled flow balanced component 5 of water inlet while pass through built-in pilot Hole 14, intercommunicating pore 41 imported into intake pressure in high pressure chest, and flexible sheet 54 is according to high pressure cavity pressure and low pressure cavity pressure Variation floats up and down, to drive dynamic spool 53 to block or open media outlet 512, before ensure that adjusting part 3 Operting differential pressure afterwards is constant, i.e., the operting differential pressure between 51 medium inlet 511 of water inlet 11 and cage sleeve is constant, to realize Flow it is constant.

As shown in figure 5, pressure measuring tie-in component 6 is separately installed at the water inlet 11 and water outlet 13 of valve body 1, for detecting Pressure.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but As long as all being protected by Patent Law in the right of the utility model.

Claims

1. a kind of dynamic balance valve, it is characterised in that：Including valve body (1), being offered in the valve body (1) allows medium from balance The water inlet (11) of valve flow to the chamber of water outlet (13), and valve seat (12) is provided in the chamber of the valve body (1)；It is described with into Movement is provided with adjusting part (3) in the chamber of the mouth of a river (11) connection, and the adjusting part (3) includes valve rod (31) and is connected to Manual spool (32), electronic spool (33) on valve rod (31) pass through manual spool (32), electronic spool (33) and valve seat (12) Coordinate the circulation area of adjustment valve；It is provided with dynamic equilibrium component (5), institute in the chamber being connected to water outlet (13) It includes cage sleeve (51) to state dynamic equilibrium component (5), and medium inlet (511), circumference are offered at the top of cage sleeve (51) Media outlet (512) is offered on side wall, cage sleeve (51) internal activity is connected with dynamic spool (53), the cage Elastic component is provided between the top and dynamic spool (53) of sleeve (51), cladding setting is flexible on the dynamic spool (53) The bottom of diaphragm (54), the cage sleeve (51) is fixedly connected with end cover (55), the periphery of the flexible sheet (54) Sealing is between cage sleeve (51) and end cover (55), and there are skies between the flexible sheet (54) and end cover (55) Chamber；The high pressure chest for being connected to hydraulic power source, flexible sheet (54) and sealing are equipped between the end cover (55) and valve body (1) Cavity between end cap (55) is connected to the high pressure chest.

2. dynamic balance valve according to claim 1, it is characterised in that：The adjusting part (3) is arranged on valve body (1) In mouthful, suitable for reading be detachably fixed of valve body (1) is connected with sealing cover (2), and the valve rod (31) is threaded through on sealing cover (2), valve The lower end of bar (31) is connected with manual spool (32) and electronic spool (33), the manual spool (32) and electronic spool (33) Shape is the circular sleeve of no less than half circle, the manual spool (32) be located inside electronic spool (33) and with its time Turn connection, fixed flange (321) is extended in manual spool (32) one end circumferentially, the direction for facing away from its axis, fixed The end abutment of flange (321) and electronic spool (33) with the rotation of limit manual spool (32), manual spool (32) with it is electronic Spool (33) fitting setting.

3. dynamic balance valve according to claim 2, it is characterised in that：The manual spool (32) is fixed with valve rod (31) Connection, the electronic spool (33) connect with valve rod (31) revolution, and the sealing cover (2) plays limit to electronic spool (33) Effect, makes it that can only pump along axis with valve rod (31)；The center position of the manual spool (32) opens up There are connecting hole, the end profiles that the valve rod (31) connect with manual spool (32) to be set as being adapted with connecting hole.

4. dynamic balance valve according to claim 2, it is characterised in that：The input terminal of the valve rod (31) is connected with electronic Actuator.

5. dynamic balance valve according to claim 1, it is characterised in that：The input terminal of the valve rod (31) is fixedly connected with Manual aperture rotary indicator (34) is provided with manual aperture locking nut above the manual aperture rotary indicator (34) (35)。

6. dynamic balance valve according to claim 4, it is characterised in that：It is arranged with resetting spring on the valve rod (31) (36), the resetting spring (36) is fixedly connected with mounting plate (361) close to one end of manual aperture rotary indicator (34), installs Plate (361) is fixed on valve rod (31), and the other end of the resetting spring (36) is connected on sealing cover (2).

7. dynamic balance valve according to claim 1, it is characterised in that：The top of the cage sleeve (51) and valve seat (12) it abuts, the elastic component is pressure spring (52), and the support base of the pressure spring (52) is mounted on cage sleeve (51) Top, deviate from valve seat (12) side, the free end of pressure spring (52) is connected on the bearing of dynamic spool (53).

8. dynamic balance valve according to claim 1, it is characterised in that：The dynamic spool (53) is the cylinder of open at one end Shape structure, opening are adapted to towards pressure spring (52) setting, shape and size with the inside of cage sleeve (51), the dynamic The inside of spool (53) cooperatively forms low pressure chamber with cage sleeve (51) and is connected to medium inlet (511).

9. dynamic balance valve according to claim 1, it is characterised in that：The dynamic equilibrium component (5) is mounted on valve body (1) in lower mouth, the lower mouth of valve body (1) by bottom cover (4) block and to play support to dynamic equilibrium component (5) fixed Effect forms high pressure chest there are appropriate interval between bottom cover (4) and dynamic equilibrium component (5)；It is set at mouth under the valve body (1) It is equipped with stepped hole, annular pilot slot (15) is offered on the stepped hole, offers and leads at the water inlet (11) of the valve body (1) It presses hole (14), pilot slot (15) is connected to by pressure guide hole (14) with water inlet (11)；The bottom cover (4) is equipped with intercommunicating pore (41), the high pressure chest between bottom cover (4) and dynamic equilibrium component (5) is made to be connected to pilot slot (15).

10. dynamic balance valve according to claim 1, it is characterised in that：The water inlet (11) of the valve body (1) and water outlet It is separately installed with pressure measuring tie-in component (6) at mouth (13).