CN207906847U - Automatic exhaust drain valve - Google Patents
Automatic exhaust drain valve Download PDFInfo
- Publication number
- CN207906847U CN207906847U CN201820227679.1U CN201820227679U CN207906847U CN 207906847 U CN207906847 U CN 207906847U CN 201820227679 U CN201820227679 U CN 201820227679U CN 207906847 U CN207906847 U CN 207906847U
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- exhaust
- shell
- drain port
- connect
- valve
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Abstract
The utility model is related to a kind of automatic exhaust drain valves comprising shell, housing tip are equipped with automatic discharge opening, and top is equipped with water inlet and starts exhaust outlet, and lower part is equipped with drain port；Float-ball type exhaust-valve, it includes the first floating ball, first connecting rod and self-tightening type pressure apparatus, and self-tightening type pressure apparatus includes pressure plate and is set to interconnecting piece, and interconnecting piece passes through automatic discharge opening, one end outside shell is connect with pressure plate, and the other end being located in shell is connect with the first floating ball；Thermostatic exhaust-valve, is disposed in the housing, and is connect with the startup exhaust outlet；Flap is switched, is set at the drain port；Drain port opens control mechanism, is connect with the switch flap, and when condensate reaches specified amount in shell, drain port opens control mechanism and opens the switch flap, opens drain port.The utility model is vented drain valve automatically can not only realize automatic exhaust according to medium temperature in valve, but also can realize and be automatically drained out to condensate.
Description
Technical field
The utility model is related to the valves for stream-jet ejector, in particular to a kind of automatic exhaust drain valve.
Background technology
Stream-jet ejector is widely used as a kind of common device of condenser vacuum is maintained in marine nuclear power plant.
The normal table work that could maintain to penetrate vapour vapor extractor is smoothly discharged in condensate in stream-jet ejector.In order to simplify system control and be
It is under unified central planning to set, the condensate of stream-jet ejector is automatically drained out using drain valve, without control.Conventional drain valve is special as one at present
With equipment, its main feature is that：Can built-in thermostatic emptying valve, in initial start stage, medium temperature is low, and emptying valve opens discharge
Air.But when air ejector is in steady operation, medium temperature is high, and thermostatic emptying valve can be automatically closed, and air exists
Aggregation in valve so that the discharge outlet of hypertonia in drain valve, drain valve can not be normally-open, and condensate can not be discharged.Therefore mesh
Preceding drain valve cannot be satisfied the function of automatically continuously discharge stream-jet ejector condensate.
Invention content
The utility model aim is to overcome above-mentioned the deficiencies in the prior art and provide a kind of automatic exhaust drain valve, should be certainly
Dynamic exhaust drain valve can not only realize automatic exhaust according to medium temperature in valve, but also can realize the automatic row to condensate
Go out.
The technical scheme adopted for realizing the purpose of the utility model is a kind of automatic exhaust drain valve comprising:
Shell, the housing tip are equipped with automatic discharge opening, and top is equipped with water inlet and starts exhaust outlet, and lower part, which is equipped with, dredges
The mouth of a river；
Float-ball type exhaust-valve comprising the first floating ball, first connecting rod and self-tightening type pressure apparatus, the self-tightening type pressure dress
Set the interconnecting piece including pressure plate and below pressure plate；The pressure plate is located at outside shell；The interconnecting piece passes through certainly
Dynamic exhaust outlet, the one end being located at outside shell are connect with pressure plate, and the other end being located in shell is connect with the first floating ball；
Thermostatic exhaust-valve, is disposed in the housing, and is connect with the startup exhaust outlet；
Flap is switched, is set at the drain port；
Drain port opens control mechanism, is connect with the switch flap, when condensate reaches specified amount in shell, drain port is opened
It opens control mechanism and opens the switch flap, open drain port.
In the above-mentioned technical solutions, it includes the second floating ball and second being located in shell that the drain port, which opens control mechanism,
Connecting rod, one end of second connecting rod are connect with second floating ball, and the other end is connect with the switch flap.
In the above-mentioned technical solutions, the pressure plate is cased with exhaust pipe in vitro.
Further, the exhaust pipe other end is connect with the drain port.
In the above-mentioned technical solutions, the shell is fabricated using integral casting forming technique.
Compared with prior art, the utility model has the beneficial effects that：
1, it can be automatically drained out band air condensate, that is, realize the dual function of exhaust and draining；
2, it is different from normally opened air scoop, is avoided that the interior leakage of outside air；
3, leaking out for working steam can be prevented；
4, vapour lock situation is conveniently abolished.
Description of the drawings
Fig. 1 is the structural schematic diagram that the utility model is vented drain valve automatically.
Fig. 2 is the structural schematic diagram that the utility model is vented float-ball type exhaust-valve in drain valve automatically.
Fig. 3 is the schematic diagram of float-ball type exhaust-valve installation in the housing.
Figure label：1- water inlets, 2- automatic discharge openings, 3- drain ports, 4- start exhaust outlet, 5- shells, 6- valve decks, 7-
Float-ball type exhaust-valve, the second floating balls of 8-, 9- second connecting rods, 10- thermostatic exhaust-valves, 11- exhaust pipes, the first floating balls of 12-,
13- interconnecting pieces, 14- self-tightening type pressure apparatus, 15- first connecting rods, 16- pressure plates.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, it includes shell 5 that the utility model is vented drain valve automatically, shell 5 sets that there are four interfaces, specially
Top is equipped with automatic discharge opening 2, and top is equipped with water inlet 1 and starts exhaust outlet 4, and lower part is equipped with drain port 3, and drain port 3 is equipped with
Flap is switched, shell 5 may be used integral casting forming technique and be fabricated.
Float-ball type exhaust-valve 7 is equipped in shell 5, drain port opens control mechanism and thermostatic exhaust-valve 10, such as Fig. 2 and
Shown in Fig. 3, concrete structure and connection type are as follows：
Float-ball type exhaust-valve 7 includes the first floating ball 12, first connecting rod 15 and self-tightening type pressure apparatus 14, wherein self-tightening type
Pressure apparatus 14 includes that pressure plate 16 and the interconnecting piece 13 set on 16 lower section of pressure plate, pressure plate 16 are located at outside shell 5, pressure
Exhaust pipe 11 is cased with outside piece 16, pressure plate 16 can the sliding in exhaust pipe 11.Interconnecting piece 13 passes through automatic discharge opening 2, is located at shell
One end outside body 5 is connect with pressure plate 16, and the other end being located in shell 5 is connect by first connecting rod 15 with the first floating ball 12,
Pressure plate 16 is closely pressed under the dead weight of the first floating ball 12 and the medial and lateral pressure difference of automatic discharge opening 2 on shell 5, real
Existing self sealss, when the first floating ball 12 rises in shell 5 under buoyant gas effect, pass through for preventing extraneous medium from leaking into
First connecting rod 15 upgrades pressure plate with rotation connection 13, to open automatic discharge opening 2, realizes exhaust.
Drain port is opened control mechanism and is connect with switch flap, and when condensate reaches specified amount in shell 5, drain port opens control
Switch flap is opened by mechanism processed, opens drain port 3.It includes the be located in shell 5 that the present embodiment drain port, which opens control mechanism,
Two floating balls 8 and second connecting rod 9, one end of second connecting rod 9 are connect with the second floating ball 8, and the other end is connect with switch flap.Second is floating
Ball 8 can drive 9 Drawing switch flap of second connecting rod by condensate buoyancy float downward in shell 5, to open drain port 3,
To realize the condensate in continuous discharge shell 5.
Thermostatic exhaust-valve 10 is connect with exhaust outlet 4 is started, when medium temperature is relatively low in shell 5, thermostatic emptying
Valve 10 automatically turns on exhaust；When medium temperature is higher in shell 5, thermostatic exhaust-valve 10 is automatically closed.
The utility model is vented drain valve and realizes that the automatic course of work for being vented and draining is as follows automatically：
When equipment steady-working state, higher, the thermostatic exhaust-valve from water inlet 1 into medium temperature in shell 5
10 are automatically closed, and air is slowly assembled in shell 5, and 3 both sides pressure difference of drain port is increasing so that and the second floating ball 8 is gradually depressed,
Drain port 3 progressively closes off, and condensate can not be discharged in shell 5.At this point, the first floating ball 12 is being increased by upward air pressure,
It is risen under 2 both sides pressure difference of automatic discharge opening and buoyancy, drives pressure plate 16 to open by first connecting rod 15, realized automatic
Exhaust outlet 2 is smoothly vented.After air is discharged in shell 5, vapour lateral pressure reduces in shell 5, and the second floating ball 8 is in condensate buoyancy
Float again under effect, drives 9 Drawing switch flap of second connecting rod, to open drain port 3, condensate is smoothly discharged.
As the utility model further preferred embodiment, automatic discharge opening 2 can be according to equipment working steam pressure
It is connected to different location, when working medium pressure is close to atmospheric pressure, may be coupled directly to airspace；When equipment working steam
When pressure is far above atmospheric pressure, automatic discharge opening can be connected to the drain port of stream-jet ejector by one section of tedge.When hydrophobic
When in valve without air accumulation, pressure is close inside and outside automatic discharge opening 2, can prevent working steam from being let out by automatic discharge opening 2
Leakage, while when steam vapour lock occurs, automatic discharge opening 2 is opened, steam discharge, vapour lock phenomenon is abolished, and automatic discharge opening 2 closes
It closes.
Claims (5)
1. a kind of automatic exhaust drain valve, which is characterized in that including:
Shell, the housing tip are equipped with automatic discharge opening, and top is equipped with water inlet and starts exhaust outlet, and lower part is equipped with hydrophobic
Mouthful；
Float-ball type exhaust-valve comprising the first floating ball, first connecting rod and self-tightening type pressure apparatus, the self-tightening type pressure apparatus packet
Include pressure plate and the interconnecting piece below pressure plate；The pressure plate is located at outside shell；The interconnecting piece passes through automatic row
Gas port, the one end being located at outside shell are connect with pressure plate, and the other end being located in shell is connected by first connecting rod and the first floating ball
It connects；
Thermostatic exhaust-valve, is disposed in the housing, and is connect with the startup exhaust outlet；
Flap is switched, is set at the drain port；
Drain port opens control mechanism, is connect with the switch flap, and when condensate reaches specified amount in shell, drain port opens control
The switch flap is opened by mechanism processed, opens drain port.
2. automatic exhaust drain valve according to claim 1, it is characterised in that：The drain port opens control mechanism
The second floating ball in shell and second connecting rod, one end of second connecting rod are connect with second floating ball, the other end with it is described
Switch flap connection.
3. automatic exhaust drain valve according to claim 1, it is characterised in that：The pressure plate is cased with exhaust pipe in vitro.
4. automatic exhaust drain valve according to claim 3, it is characterised in that：The exhaust pipe other end with it is described hydrophobic
Mouth connection.
5. being vented drain valve automatically according to Claims 1 to 4 any one of them, it is characterised in that；The shell is using whole
Cast shaping process is fabricated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820227679.1U CN207906847U (en) | 2018-02-08 | 2018-02-08 | Automatic exhaust drain valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820227679.1U CN207906847U (en) | 2018-02-08 | 2018-02-08 | Automatic exhaust drain valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207906847U true CN207906847U (en) | 2018-09-25 |
Family
ID=63560527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820227679.1U Active CN207906847U (en) | 2018-02-08 | 2018-02-08 | Automatic exhaust drain valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207906847U (en) |
-
2018
- 2018-02-08 CN CN201820227679.1U patent/CN207906847U/en active Active
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