CN208058006U - Hydraulic control ball valve - Google Patents
Hydraulic control ball valve Download PDFInfo
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- CN208058006U CN208058006U CN201820461558.3U CN201820461558U CN208058006U CN 208058006 U CN208058006 U CN 208058006U CN 201820461558 U CN201820461558 U CN 201820461558U CN 208058006 U CN208058006 U CN 208058006U
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- valve
- valve seat
- seal
- hydraulic control
- outlet
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Abstract
The utility model is related to a kind of hydraulic control ball valves.Including valve body, valve seat, sphere, valve rod, hydraulic control unit and electric control gear；Mainly valve seat is made of working seal valve seat and maintenance seal valve seat, hydraulic control unit includes oil pump, master cylinder, auxiliary oil cylinder, solenoid directional control valve, lock solenoid valve, the left oil pocket and right oil pocket of master cylinder are connected to by solenoid directional control valve with fuel pump outlet, the rod chamber of auxiliary oil cylinder is connected to by locking solenoid valve with fuel pump outlet, return spring is installed in the rodless cavity of auxiliary oil cylinder, the piston rod of master cylinder is connect by transmission mechanism with valve rod one end, the rod chamber of auxiliary oil cylinder is connected to the unlatching chamber of the piston seal ring of maintenance seal valve seat, the unlatching chamber and closing chamber of the piston seal ring of working seal valve seat are connected to by electromagnetic change-over valve with the rod chamber of auxiliary oil cylinder；Valve outlet installs pressure sensor, and the control switch of the pressure sensor is connected in the power control circuit of solenoid directional control valve.Installation space is small, at low cost, the pressure loss is few, operational efficiency is high.
Description
Technical field
The utility model belongs to valve field more particularly to a kind of hydraulic control ball valve.The utility model is suitable for pumping plant, water wheels
Machine inlet valve.
Background technology
In hydropower station system, in order to protect turbine equipment safe, control valve generally is installed in hydraulic turbine import.It is existing
Power station inlet valve generally uses hydraulic butterfly valve, the hydraulic butterfly valve to be used for preventing import medium from generating impact, damage to the hydraulic turbine
Hydropower station system equipment, while gate valve, the service valve as equipment such as hydraulic butterfly valve or the hydraulic turbines being installed in hydraulic butterfly valve import
Door.Its major defect is：Pumping plant or hydraulic turbine import need to install two deck valve doors, make the installation of pumping plant or hydropower station system equipment
Space is larger, keeps equipment installation cost high；Butterfly valve to pumping plant or power station inlet pipeline there are larger flow resistance, damage by generation pressure
It loses, reduces the operational efficiency of pumping station system or hydropower station system.
Invention content
The purpose of this utility model is to be directed to disadvantage of the existing technology, improves one kind and not needing installation and repairing valve, pacifies
Dress space is small, equipment installation cost is low, the small hydraulic control ball valve of current global mechanism, the pressure loss.
The technical solution of the utility model includes valve body, valve seat, sphere, valve rod, hydraulic control unit and electric control gear；Mainly
Valve seat is made of working seal valve seat and maintenance seal valve seat, and maintenance seal valve seat is located at sphere upstream side, working seal valve
Seat is located at sphere downstream side, and working seal valve seat and maintenance seal valve seat use piston sealing ring structure；Hydraulic control unit includes oil
Pump, master cylinder, auxiliary oil cylinder, solenoid directional control valve, locking solenoid valve, the left oil pocket and right oil pocket of master cylinder by solenoid directional control valve with
Fuel pump outlet is connected to, and the rod chamber of auxiliary oil cylinder is connected to by locking solenoid valve with fuel pump outlet, installation in the rodless cavity of auxiliary oil cylinder
The piston rod of return spring, master cylinder is connect by transmission mechanism with valve rod one end, rod chamber and the maintenance sealing valve of auxiliary oil cylinder
The unlatching chamber connection of the piston seal ring of seat, the unlatching chamber and closing chamber of the piston seal ring of working seal valve seat pass through electromagnetism and turn
It changes valve to be connected to the rod chamber of auxiliary oil cylinder, installation and repairing seal valve seat travel switch and master in the control circuit of the electromagnetic change-over valve
Oil cylinder stroke switchs；Valve outlet installs pressure sensor, and the control switch of the pressure sensor is connected to solenoid directional control valve
In power control circuit.
Preferably, maintenance seal valve seat is equipped with mechanical locking.
Preferably, pressurize solenoid valve is installed between fuel pump outlet and solenoid directional control valve import.
Preferably, the outlet of the connecting pipe and manual pump between pressurize electromagnetic valve outlet and solenoid directional control valve import
Road is connected to.
Preferably, hydraulic lock is set between electromagnetic switch valve outlet and master cylinder.
Preferably, valve channel is equipped with preceding nipple and rear nipple, between preceding nipple and rear nipple by installation
Siphunculus, setting float-ball type is vented aeration valve automatically on rear nipple.
The utility model has the advantages that upstream side is maintenance seal valve seat, downstream side is working seal valve seat, and system is normal
When operation, working seal valve seat, which is realized, controls pipeline break-make, and when system overhaul, maintenance seal valve seat closes cut-out downstream tube
Road plays the role of service valve and control valve, reduces installation space, reduces equipment cost, is damaged to pipe medium pressure
Lose small, operational efficiency height.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structure principle chart of the utility model hydraulic control unit.
Specific implementation mode
Hydraulic control ball valve as shown in Figure 1, including valve body 23, valve seat, sphere 24, valve rod 25, hydraulic control unit and electric control gear,
Valve body 23 uses three stage structure, is bolted to connection and is formed by left valve barrel, middle valve body and right valve barrel, and 25 middle part of valve rod is close
It is enclosed on valve body, lower end is fixedly connected with sphere 24；Valve seat is made of working seal valve seat 26 and maintenance seal valve seat 27,
It overhauls seal valve seat 27 and is located at 24 upstream side of sphere, i.e., in left valve barrel, working seal valve seat 26 is located at 24 downstream side of sphere, i.e.,
In right valve barrel, working seal valve seat 26 and maintenance seal valve seat 27 use piston sealing ring structure, i.e., outside working seal valve seat 26
Constitute piston cylinder operator between disc and right valve barrel vias inner walls, maintenance 27 periphery of seal valve seat and left valve barrel vias inner walls it
Between constitute piston cylinder operator；Hydraulic control unit includes oil pump, master cylinder 18, auxiliary oil cylinder 20, solenoid directional control valve 14, locking solenoid valve
21；The left oil pocket and right oil pocket of master cylinder 18 are connected to by solenoid directional control valve 14 with fuel pump outlet；The rod chamber of auxiliary oil cylinder 20 is logical
It crosses locking solenoid valve 21 to be connected to fuel pump outlet, return spring is installed, locking solenoid valve 21 is in valve in the rodless cavity of auxiliary oil cylinder 20
When door closure state, the oil pressure of the closing chamber of the piston seal ring of auxiliary oil cylinder 20 and working seal valve seat 26 is locked, work is kept
Sealed pressure between seal valve seat 26 and sphere 24, when locking solenoid valve 21 unlocks, return spring pushes auxiliary oil cylinder
20 piston reset makes 20 rod chamber oil pressure of auxiliary oil cylinder pass through locking solenoid valve 21 and flows back into fuel tank；The piston rod of master cylinder 18
It is connect with 25 upper end of valve rod by transmission mechanism, the rod chamber of auxiliary oil cylinder 20 and opening for the piston seal ring of maintenance seal valve seat 27
Chamber connection is opened, opening chamber and closing chamber for the piston seal ring of working seal valve seat 26 passes through electromagnetic change-over valve and auxiliary oil cylinder 20
Rod chamber is connected to, installation and repairing seal valve seat travel switch 22 and master cylinder travel switch in the control circuit of the electromagnetic change-over valve
19；When hydraulic control unit receives valve opening signal, the rod chamber of auxiliary oil cylinder 20 is connected to oil pump by locking solenoid valve 21 first, oil
It is pressed into the unlatching chamber of the piston seal ring into maintenance seal valve seat 27, pushes maintenance seal valve seat 27 to open, overhauls seal valve seat
The control circuit of the open position signal control electromagnetic change-over valve of travel switch 22, makes electromagnetic change-over valve work, by working seal valve
The rod chamber for opening chamber and auxiliary oil cylinder 20 of the piston seal ring of seat 26 is connected, and so that working seal valve seat 26 is opened, flow passes through
Overhaul the water-filling into spiral case of the gap between seal valve seat 27 and working seal valve seat 26 and sphere 24；The maintenance is close
The unlatching chamber for sealing the piston seal ring of valve seat 27 is between the piston seal ring right end face and left valve barrel of maintenance seal valve seat 27
The cavity of formation, the piston seal ring of working seal valve seat 26 are opened on the left of the piston seal ring that chamber is working seal valve seat 26
The cavity formed between end face and right valve barrel.The control switch of the outlet of valve body 23 installation pressure sensor, the pressure sensor connects
It is connected in the power control circuit of solenoid directional control valve 14, when reaching pressure sensor setting value in spiral case, pressure passes
The control switch 9 of sensor controls solenoid directional control valve 14, and the left oil pocket of master cylinder 18 is connected to fuel pump outlet oil pressure, realizes valve opening
Operation；When hydraulic control unit, which receives, closes valve signal, solenoid directional control valve 14 is controlled by electric control gear and is commutated, by the right side of master cylinder 18
Oil pocket is connected to fuel pump outlet oil pressure, and the piston rod of master cylinder 18 pushes valve rod 25 that sphere 24 is rotated by 90 ° off-position, master cylinder
The off position signal control electromagnetic change-over valve work of travel switch 19, makes the closing chamber of the piston seal ring of working seal valve seat 26
It is connected to the rod chamber of auxiliary oil cylinder 20, oil pressure pushes the work forward seal valve seat 26 with the compression sealing of sphere 24, and valve operation is closed in realization.Oil
Pump is made of the first oil pump 3 and the second oil pump 6, and first filter 2, the second oil pump 6 are installed between 3 import of the first oil pump and mailbox
Second filter 4 is installed, the first oil pump 3 and the outlet of the second oil pump 6 pass through check valve and locking solenoid valve between import and fuel tank
21 inlet communications, check valve are made of the first check valve, the second check valve and third check valve, the first check valve inlet and first
3 outlet of oil pump, the second check valve inlet and 6 outlet of the second oil pump, third check valve inlet and the first check valve and
The outlet of second check valve, third one-way valved outlet pass through with locking 21 inlet communication of solenoid valve, third check valve inlet
Overflow valve 5 is connected to fuel tank, and third one-way valved outlet is connected to by pressure-relief valve with fuel tank, and pressure is installed in third one-way valved outlet
Table 10, fuel tank is interior to install liquid level alarm 1, as shown in Figure 2.In third one-way valved outlet, accumulator is set, in system dead electricity,
Valve is reliably closed by energy storage pressure, avoids that accident occurs.Electric control gear uses PCL controllers, automatic by program is compiled and edited
Complete valve opening and close the sequential control of valve process, there is local operation -- remote monitoring is converted, and realizes pumping plant, power station automation fortune
Row.
It overhauls seal valve seat 27 and is equipped with mechanical locking, which uses the work in maintenance seal valve seat 27
The left end face inner circle circumferential direction of plug seal ring is uniformly arranged several clamping screws 30 composition, under normal circumstances, maintenance sealing
Valve seat 27 is in normally open, when turbine equipment overhauls or replaces valve sealing element, in the piston of maintenance seal valve seat 27
The closing chamber of seal ring injects hydraulic oil, and is locked the piston seal ring armstrong's patent for overhauling seal valve seat 27 by clamping screw 30
It tightly seals and coordinates with sphere 24, prevent maintenance process from contingency occurs.
Pressurize solenoid valve 11 is installed between 14 import of fuel pump outlet and solenoid directional control valve, which stablizes it
Export the oil pressure of end system.
The outlet conduit of connecting pipe and manual pump 8 between the outlet of pressurize solenoid valve 11 and 14 import of solenoid directional control valve
The 4th check valve is installed in connection on the outlet conduit of manual pump 8.
Hydraulic lock 15 is set between the outlet of solenoid directional control valve 14 and master cylinder 18, locks 18 location status of master cylinder.?
One-way throttle valve is set on the pipeline that hydraulic lock 15 is led between the left oil pocket and right oil pocket of master cylinder 18, control valve is slow to be opened,
Slow Close.
Valve channel is equipped with preceding nipple 28 and rear nipple 29, between preceding nipple 28 and rear nipple 29 by installation
Siphunculus, before valve opening, electric control gear control opens the by-passing valve on bypass pipe and valve is imported and exported progress concora crush, reduces valve
Door opens load.Float-ball type is set afterwards on nipple 29 and is vented aeration valve automatically, avoid pipeline trapped air or generates vacuum, it is right
Pipeline damages.
The back pressure mouth of solenoid directional control valve 14 is connected to by Slow Close throttle valve 17 with fuel tank, and Slow Close throttle valve 17 imports and exports both ends
The inlet and outlet of quick closing valve solenoid valve 12 in parallel, when the import of electric control gear control quick closing valve solenoid valve 12 and outlet, by Slow Close
Throttle valve 17 bypasses, and opens speed discharge hydraulic pressure, realizes quick closing valve.
The setting telescopic section 31 in the outlet end of rear nipple 29 can act on lower edge when valve is closed in pressure medium
Pipeline is axial a small amount of mobile, eliminates pipeline axial stress, equipment is without damage after protecting valve.
Claims (7)
1. a kind of hydraulic control ball valve, including valve body（23）, valve seat, sphere（24）, valve rod（25）, hydraulic control unit and electric control gear；Its
It is characterized in valve seat by working seal valve seat（26）With maintenance seal valve seat（27）Composition overhauls seal valve seat（27）Positioned at sphere
（24）Upstream side, working seal valve seat（26）Positioned at sphere（24）Downstream side, working seal valve seat（26）With maintenance seal valve seat
（27）Using piston sealing ring structure；Hydraulic control unit includes oil pump, master cylinder（18）, auxiliary oil cylinder（20）, solenoid directional control valve（14）,
Lock solenoid valve（21）；Master cylinder（18）Left oil pocket and right oil pocket pass through solenoid directional control valve（14）It is connected to fuel pump outlet；It is secondary
Oil cylinder（20）Rod chamber pass through lock solenoid valve（21）It is connected to fuel pump outlet, auxiliary oil cylinder（20）Rodless cavity in install return
Spring；Master cylinder（18）Piston rod pass through transmission mechanism and valve rod（25）Upper end connects, auxiliary oil cylinder（20）Rod chamber and inspection
Repair seal valve seat（27）Piston seal ring unlatching chamber connection, working seal valve seat（26）Piston seal ring unlatching chamber and
It closes chamber and passes through electromagnetic change-over valve and auxiliary oil cylinder（20）Rod chamber connection, the power supply of the electromagnetic change-over valve is by maintenance seal valve seat
Travel switch（22）Open position signal, master cylinder travel switch（19）The off position signal output signal that passes through electric control gear
Control, electric control gear use PCL controllers；Valve body（23）Outlet installation pressure sensor, the control switch of the pressure sensor
It is connected to solenoid directional control valve（14）Power control circuit in.
2. hydraulic control ball valve according to claim 1, it is characterized in that maintenance seal valve seat（27）It, should equipped with mechanical locking
Mechanical locking is used in maintenance seal valve seat（27）If the left end face inner circle circumferential direction of piston seal ring be uniformly arranged
Dry clamping screw（30）Composition.
3. hydraulic control ball valve according to claim 1 or 2, it is characterized in that in fuel pump outlet and solenoid directional control valve（14）Import it
Between install pressurize solenoid valve（11）.
4. hydraulic control ball valve according to claim 3, it is characterized in that in pressurize solenoid valve（11）Outlet and solenoid directional control valve
（14）Connecting pipe between import and manual pump（8）Outlet conduit connection.
5. hydraulic control ball valve according to claim 1 or 2, it is characterized in that in solenoid directional control valve（14）Outlet and master cylinder（18）
Between hydraulic lock is set（15）.
6. hydraulic control ball valve according to claim 1 or 2, it is characterized in that valve channel is equipped with preceding nipple（28）With rear short circuit
Pipe（29）, in preceding nipple（28）With rear nipple（29）Between bypass pipe, rear nipple are installed（29）Upper setting float-ball type is certainly
Dynamic exhaust aeration valve.
7. hydraulic control ball valve according to claim 1 or 2, it is characterized in that solenoid directional control valve（14）Back pressure mouth pass through Slow Close section
Flow valve（17）It is connected to fuel tank, Slow Close throttle valve（17）Import and export both ends parallel connection quick closing valve solenoid valve（12）Inlet and outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820461558.3U CN208058006U (en) | 2018-04-03 | 2018-04-03 | Hydraulic control ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820461558.3U CN208058006U (en) | 2018-04-03 | 2018-04-03 | Hydraulic control ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208058006U true CN208058006U (en) | 2018-11-06 |
Family
ID=63986716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820461558.3U Active CN208058006U (en) | 2018-04-03 | 2018-04-03 | Hydraulic control ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208058006U (en) |
-
2018
- 2018-04-03 CN CN201820461558.3U patent/CN208058006U/en active Active
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