CN201666448U - Movable-fulcrum lever bucket-type low-pressure steam trap - Google Patents
Movable-fulcrum lever bucket-type low-pressure steam trap Download PDFInfo
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- CN201666448U CN201666448U CN2010201101685U CN201020110168U CN201666448U CN 201666448 U CN201666448 U CN 201666448U CN 2010201101685 U CN2010201101685 U CN 2010201101685U CN 201020110168 U CN201020110168 U CN 201020110168U CN 201666448 U CN201666448 U CN 201666448U
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Abstract
The utility model relates to a movable-fulcrum lever bucket-type low-pressure steam trap, which is characterized in that the right side and the left side of a trap body (1) are respectively provided with a working medium inlet hole (19) and a working medium outlet hole (20); a hole is arranged on the trap body (1) along the inlet hole (19) downwards; a tubular filter screen (16) is arranged in the hole; a hole is arranged on the trap body (1) along the outlet hole (20) upwards; one end of the hole is communicated with a trap seat (7), and the other end thereof is communicated with the outlet hole (20); the trap seat (7) and a trap cap (9) are in threaded connection. A fixed mount (14) is symmetrically welded with hooks (6) and is connected on the trap cap (9); one end of a movable-fulcrum lever (5) is symmetrically provided with hook holes (23); the hooks (6) are hung in the holes; the middle part of one end of the movable-fulcrum lever (5) is provided with a spool hole (22); a spool (3) is arranged in the hole; the other end of the movable-fulcrum lever (5) is provided with a slot hole (21); and the slot hole (21) is connected with a lifting hook (15) and is connected with a bucket (2) through the lifting hook (15). The utility model can remove condensation water in time; the steam leakage loss is small, and the rate of back pressure is greater than 90 percent, which are beneficial to condensation water recovery. The trap has long service life and convenient installation and maintenance.
Description
Technical field
The utility model relates to a kind of low-pressure vapor drain valve, can satisfy low pressure steam transfer line and the automatic block steam and drain water of indirect heated component and utilize the drain valve back pressure to reclaim the moving fulcrum lever bucket type low-pressure vapor drain valve of water of condensation more specifically to a kind of.
Background technique
At present, known lever bucket type Automatic steam trap Trap nominal pressure PN16, Maximum allwable temperature TMA425 ℃, maximum pump discharge can not satisfy the user to the requirement of economic stability type Automatic steam trap Trap selected technology like this less than 330Kg/h.
The model utility content
The technical problems to be solved in the utility model is: overcome existing lever bucket type Automatic steam trap Trap discharge capacity deficiency under low pressure, provide that a kind of operating range is big, the moving fulcrum lever bucket type low-pressure vapor drain valve of the single valve seat of stability and good reliability, self-alignment, automatic closing.A kind of moving fulcrum lever bucket type Automatic steam trap Trap, nominal pressure be PN25, Maximum allwable temperature TMA425 ℃, maximum pump discharge greater than 430Kg/h, can satisfy technical parameter economic stability type Automatic steam trap Trap users' such as low pressure float amount usage requirement.
For solving the problems of the technologies described above, the utility model comprises valve body, valve gap, and its characteristics are: between a, valve body and the valve gap composite gland bush is housed, fastening by hexagon head bolt, valve body and valve gap are the moulding of WCB foundry goods one-step casting.The valve body and arranged on left and right sides is respectively equipped with working medium inlet hole, exit orifice, is provided with the hole downwards along inlet hole on valve body, communicates with inlet hole.Upwards on valve body, be provided with the hole along exit orifice, communicate with exit orifice.Valve gap is provided with the hole, and an end in hole communicates with valve seat, and its other end communicates with exit orifice.Inlet hole, exit orifice place are welded with flange respectively.On b, the valve body with in the hole that inlet hole communicates the tubular filter screen is housed, adopts and be threaded fixingly by the plug screw pad is housed on the plug screw, the body cavity bottom is provided with the hole and communicates with inlet hole.C, valve seat adopt pipe thread to be connected with valve gap, and the fixing frame symmetry is welded with hook, and fixing frame is fixedlyed connected by slotted countersunk flat head screw with valve gap.D, moving fulcrum lever one end are arranged with hook hole, hang with hook in its hole.Moving fulcrum lever one end middle part is provided with spool bore, in its hole spool is housed, and is fixed by retaining sheet, and the downward symmetry of moving fulcrum lever one bottom portion curves dog, and the moving fulcrum lever the other end is provided with slotted hole, and slotted hole is connected with suspension hook, is connected with well-bucket by suspension hook.
The utility model can provide the low pressure float amount type mechanical steam valve of a kind of PN25 to the user, satisfies the usage requirement of industries such as large-scale petroleum chemical industry, firepower to this economic stability shape parameter Automatic steam trap Trap.Advantage is: can in time get rid of water of condensation, the steam leakage loss is little, Rate of load steam loss＜2%.The operating pressure scope big (0.007～1.6MPaG), do not influence draining after the variation in pressure.Rate of back pressure＞90% helps water of condensation and reclaims.Well-bucket top is provided with Φ 2mm through hole, can eliminate the stifled and steam vapour lock of air gas, is active in one's movements, reliably, and noise is little, long service life (greater than 16000 hours), and installation and maintenance are convenient.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a kind of moving fulcrum lever bucket type of the utility model low-pressure vapor drain valve structure cross-sectional schematic.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is a fixing frame 14 and hook 6 welding enlarged views among Fig. 1.
Fig. 4 is the plan view of Fig. 3.
Fig. 5 is an A place enlarged view among Fig. 1.
Fig. 6 is the enlarged view of moving fulcrum lever 5 among Fig. 5.
Fig. 7 is the left sectional view of Fig. 6.
Fig. 8 is the plan view of Fig. 6.
Fig. 9 is the amplification view of valve seat 7 among Fig. 5.
Figure 10 is the plan view of Fig. 9.
Figure 11 is the enlarged view of spool 3 among Fig. 5.
Figure 12 is the enlarged view of retaining sheet 4 among Fig. 5.
Figure 13 is the schematic representation of air in a kind of moving fulcrum lever bucket type of the utility model low-pressure vapor drain valve cavity, low-temperature condensate, condensed water in high temperature, steam.
Figure 14 is the initial schematic representation of the utility model working principle.
Figure 15 is valve seat 7 opening state schematic representation in the utility model working principle.
Figure 16 is valve seat 7 closed condition schematic representation in the utility model working principle.
Figure 17 sinks to entering new recurrent state schematic representation for well-bucket in the utility model working principle 2.
Embodiment
In Fig. 1,2,3,4: between valve body 1 and the valve gap 9 composite gland bush 8 is housed, fastening by hexagon head bolt 10, valve body 1 and valve gap 9 are the moulding of WCB foundry goods one-step casting, can satisfy Automatic steam trap Trap like this in the safe handling requirement down of 260 ℃ of Maximum allwable temperatures, pressure (Maximum allowable pressure 1.7MPaG), the wall thickness of valve body 1 and pressure rating meet the regulation of GB/T12224-2005 " steel valve fitness for purpose ", and label 12 is fixed on the valve gap 9 by two rivets 11.Valve body 1 and arranged on left and right sides is respectively equipped with working medium inlet hole 19, exit orifice 20, is provided with the hole downwards on valve body 1 along inlet hole 19, communicates with inlet hole 19.Upwards on valve body 1, be provided with the hole along exit orifice 20, communicate with exit orifice 20.Valve gap 9 is provided with the hole, and an end in hole communicates with valve seat 7, and its other end communicates with exit orifice 20, and valve seat 7 adopts pipe thread to be connected with valve gap 9, and inlet hole 19, exit orifice 20 places are welded with flange 26 respectively.Valve body 1 intracavity bottom is provided with hole 27 and communicates with inlet hole 19, and tubular filter screen 16 is housed in the hole that communicates with inlet hole 19 on the valve body 1, is threaded fixing by 17 employings of plug screw pad are housed on the plug screw 18.Fixing frame 14 symmetries are welded with hook 6, adopt the argon arc welding welding, and fixing frame 14 is fixedlyed connected by slotted countersunk flat head screw 13 with valve gap 9.
In Fig. 5,6,7,8,9,10,11,12: moving fulcrum lever 5 one ends are arranged with hook hole 23, hang with hook 6 in its hole, hook 6 up and down gap in hook hole 23 is 0～4.8mm, gap, the left and right sides is 0～1.5mm, its effect is: opens or when closing valve seat, and can self-alignment, close automatically.Moving fulcrum lever 5 one ends middle part is provided with spool bore 22, and spool 3 is housed in its hole, and is fixing by retaining sheet 4.Valve seat 7 inner chambers are step through-hole, and its macropore and aperture joint 33 are 120 °, and orifice end 24 is 90 ° of taper holes.Spool 3 external diameters are step-like, and an end is a sphere 25, and its other end is cylindrical, and are provided with retaining film trap 32.Sphere 25 has formed the complete loop wire that contacts for sealing surface and the orifice end 24 of valve seat 7 are 90 ° taper hole, and the power of closing concentrates on the narrow sealing loop wire, has strengthened sealability.This kind mechanism is along with the drain valve growth of service time, and its sealability is more superior, and trace increases because wearing and tearing make valve seat 7 mouth diameters, thereby makes deeper inserted valve seat 7 of spherical valve core 3, has guaranteed sealing.Retaining sheet 4 both sides are provided with defiber 29,
Shape 30 is hollow.The downward symmetry of moving fulcrum lever 5 one bottom portions curves dog 28, and the effect of dog 28 is: the maximum opening that restraint pivot point lever 5 lifts.Dog 28 was downward when moving fulcrum lever 5 was installed, the cylindrical end of spool 3 is from bottom to top by the spool bore 22 on the moving fulcrum lever 5, the defiber 29 of retaining sheet 4 both sides is turned up,, will be turned up location in the retaining film trap 32 that is stuck in behind the part return on the spool 3 then by spool 3.Moving fulcrum lever 5 the other ends are provided with slotted hole 21, and slotted hole 21 is connected with suspension hook 15.Be connected with well-bucket 2 by suspension hook 15, adopt the argon arc welding welding.The weight of well-bucket 2 is 90 ± 5 grams, size Φ 55 * 65 * 0.8 (wall thickness), unit is mm, be to utilize the equilibrium equation formula to calculate to select well-bucket weight and size, adapted valve opening Φ 2.5mm again, filling the vapour height in Maximum differential pressure 1.7MPaG exerts oneself the equilibrium state well-bucket is 17mm, filling the vapour height in Minimum differntial pressure 0.2MPaG exerts oneself the equilibrium state well-bucket is 28.8mm, can guarantee drain valve switch motion normal reliable in 0.2～1.7MPaG operating pressure differential scope, adopt well-bucket to increase the opening force of valve.Well-bucket 2 tops are provided with exhaust hole 31, and exhaust hole 31 diameters are ф 2mm, and its effect is: can eliminate the stifled and steam vapour lock of air gas.
Working principle of the present utility model is such: after moving fulcrum lever bucket type low-pressure vapor drain valve is installed on the pipeline, start working automatically as Figure 13,14,15,16,17 signal.When low-temperature condensate passes through working medium inlet hole 19, enter filter screen 16, this moment, well-bucket 2 was in the bottom of valve body 1, and valve seat 7 is the enable possition, and low-temperature condensate discharges rapidly, meanwhile discharged air (seeing accompanying drawing 14).After temperature raises in the valve, but still be full of by water in the cavity, spool 3 is in original state, and condensed water in high temperature continues discharging (seeing accompanying drawing 15).When condensed water in high temperature drains soon, steam is full of well-bucket 2 inner chambers, after well-bucket 2 inner chamber tops are filled the vapour height and are surpassed that the equilibrium of forces attitude is required and fill the vapour height, the suffered buoyancy of well-bucket 2 is greater than gravity, well-bucket 2 quickens to rise, driving moving fulcrum lever 5 driving spools 3 moves upward, under the effect of spool 3 pressure medium in adsorption force that the effect of inertia that is moved upward and condensed water in high temperature flow out at a high speed and valve body 1, utilize moving fulcrum lever 5 two circular holes 23 can hook about in the of 6, about movable, up and down amount is that 0～4.8mm, left and right sides activity are 0～1.5mm.The hole of spool 3 self-alignments, self acting stop valve seat, valve are closed condition (seeing accompanying drawing 16).Along with well-bucket 2 inner chamber steam reduce, condensed water in high temperature increases, and buoyancy reduces and sinks, and spool 3 sinks under the driving of moving fulcrum lever 5, opens valve seat 7, and valve is in big displacement condition, enters new periodic duty (seeing accompanying drawing 17).
In sum: the utility model adopt the working medium substantially horizontal advance from water inlet, valve body 1 left side 19, from the housing that valve body right side osculum 20 substantially horizontals are discharged, make things convenient for user's pipe arrangement to install.Utilize 5 self-alignments of moving fulcrum lever, self acting stop valve seat hole, spherical seal form makes the longer effective work of drain valve, increases the service life, and closes all very reliable after use initial stage and the wearing and tearing, and switch motion is very sensitive, at pressure reduction less than also can regular event under the 0.2MPaG.The lever of implementing usefulness in the utility model is 22.5/1.7=13.24, and therefore increasing the spool valve opening force reaches 13 times, has guaranteed that the drain valve action is normal under operating pressure differential 1.6MPaG parameter, the reliability height.Utilize the equilibrium equation formula to calculate and select well-bucket weight and size, adapted valve opening Φ 2.5mm again, filling the vapour height in Maximum differential pressure 1.6MPaG exerts oneself the equilibrium state well-bucket is 17mm, filling the vapour height in Minimum differntial pressure 0.2MPaG exerts oneself the equilibrium state well-bucket is 28.8mm, filling vapour height allowance is 36.2mm, can guarantee drain valve switch motion normal reliable in 0.2～1.6MPaG operating pressure differential scope.Uncovered downward float, promptly well-bucket 2 is dynamical elements of this Automatic steam trap Trap, adopts the well-bucket of constant weight to cooperate suitable lever ratio to increase the opening force of valve, has satisfied the technical parameter requirement of low-interest economy type Automatic steam trap Trap.
Claims (4)
1. a moving fulcrum lever bucket type low-pressure vapor drain valve comprises valve body (1), valve gap (9), it is characterized in that:
Between a, valve body (1) and the valve gap (9) composite gland bush (8) is housed, fastening by hexagon head bolt (10), valve body (1) and valve gap (9) are the moulding of WCB foundry goods one-step casting; Valve body (1) and arranged on left and right sides is respectively equipped with working medium inlet hole (19), exit orifice (20), is provided with the hole downwards on valve body (1) along inlet hole (19), communicates with inlet hole (19); Upwards on valve body (1), be provided with the hole along exit orifice (20), communicate with exit orifice (20); Valve gap (9) is provided with the hole, and an end in hole communicates with valve seat (7), and its other end communicates with exit orifice (20); Inlet hole (19), exit orifice (20) locate to be welded with respectively flange (26);
In the hole that b, valve body (1) go up with inlet hole (19) communicates tubular filter screen (16) is housed, is threaded fixing by plug screw pad (17) employing is housed on the plug screw (18); Valve body (1) intracavity bottom is provided with hole (27) and communicates with inlet hole (19);
C, valve seat (7) adopt pipe thread to be connected with valve gap (9); Fixing frame (14) symmetry is welded with hook (6), and fixing frame (14) is fixedlyed connected by slotted countersunk flat head screw (13) with valve gap (9);
D, moving fulcrum lever (5) one ends are arranged with hook hole (23), hang with hook (6) in its hole; Moving fulcrum lever (5) one ends middle part is provided with spool bore (22), and spool (3) is housed in its hole, and is fixing by retaining sheet (4); The downward symmetry of moving fulcrum lever (5) one bottom portions curves dog (28); Moving fulcrum lever (5) the other end is provided with slotted hole (21), and slotted hole (21) is connected with suspension hook (15), is connected with well-bucket (2) by suspension hook (15).
2. a kind of moving fulcrum lever bucket type low-pressure vapor drain valve according to claim 1 is characterized in that: valve seat (7) inner chamber is a step through-hole, and its macropore and aperture joint (33) are 120 °, and orifice end (24) is 90 ° of taper holes.
3. a kind of moving fulcrum lever bucket type low-pressure vapor drain valve according to claim 1 is characterized in that: spool (3) external diameter is step-like, and an end is sphere (25), and its other end is cylindrical, and is provided with retaining film trap (32).
4. a kind of moving fulcrum lever bucket type low-pressure vapor drain valve according to claim 1 is characterized in that: well-bucket (2) top is provided with exhaust hole (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201101685U CN201666448U (en) | 2010-02-04 | 2010-02-04 | Movable-fulcrum lever bucket-type low-pressure steam trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201101685U CN201666448U (en) | 2010-02-04 | 2010-02-04 | Movable-fulcrum lever bucket-type low-pressure steam trap |
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| Publication Number | Publication Date |
|---|---|
| CN201666448U true CN201666448U (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201101685U Expired - Fee Related CN201666448U (en) | 2010-02-04 | 2010-02-04 | Movable-fulcrum lever bucket-type low-pressure steam trap |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197049A (en) * | 2020-09-24 | 2021-01-08 | 福建新达阀门有限公司 | Water injection regulating valve for ceramic core of oil well |
-
2010
- 2010-02-04 CN CN2010201101685U patent/CN201666448U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197049A (en) * | 2020-09-24 | 2021-01-08 | 福建新达阀门有限公司 | Water injection regulating valve for ceramic core of oil well |
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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: 20101208 Termination date: 20180204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |