CN201322180Y - Piston bucket type low pressure steam trap valve - Google Patents
Piston bucket type low pressure steam trap valve Download PDFInfo
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- CN201322180Y CN201322180Y CNU200820181645XU CN200820181645U CN201322180Y CN 201322180 Y CN201322180 Y CN 201322180Y CN U200820181645X U CNU200820181645X U CN U200820181645XU CN 200820181645 U CN200820181645 U CN 200820181645U CN 201322180 Y CN201322180 Y CN 201322180Y
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Abstract
The utility model relates to a piston bucket type low pressure steam trap valve, which is characterized in that an inlet hole (26) and an outlet hole (33) are respectively arranged on the left side and the right side of a valve body (1), a hole is arranged on the valve body (1) downwards along the inlet hole (26), a hole is arranged on the valve body (1) upwards along the outlet hole (33), a hole is arranged on a valve bonnet (2), and the valve body (1) and the valve bonnet (2) are casting articles which are shaped through casting once. A main valve seat (5) is connected in a cavity on one end of a main valve seat control frame (6) through a screw thread, the external diameter is connected with the valve bonnet (2) through the screw thread, the other end is connected with a connecting plate (13) through the screw thread, a connecting part of a connecting bar (12) and a guide cap (10) is installed in an inner cavity of the main valve seat control frame (6), and the other end of the connecting bar (12) is connected with a bucket (18). The piston bucket type low pressure steam trap valve can remove condensed water in time and has small steam leakage loss, the load steam leaking rate is smaller than 2%, the movement pressure range is big, water trap can not be affected after the pressure is changed, and the back pressure rate is bigger than 90%, which is beneficial for reclaiming the condensed water. The piston bucket type low pressure steam trap valve can eliminate air binding and steam locking, and has sensitive and reliable movements, small noise and long service life.
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 piston bucket type low-pressure vapor drain valve of water of condensation more specifically to a kind of.
Background technique
At present, known lever piston bucket type Automatic steam trap Trap nominal pressure PN160, Maximum allwable temperature TMA427 ℃, maximum pump discharge can not satisfy the requirement of 1,000,000 tons of/year ethene Automatic steam trap Trap selected technologies like this less than 3800Kg/h.
The model utility content
The technical problems to be solved in the utility model is: overcome existing piston bucket type Automatic steam trap Trap discharge capacity deficiency under low pressure, provide that a kind of operating range is big, a kind of piston bucket type low-pressure vapor drain valve of the bivalve seat cut-off type of stability and good reliability, self-alignment, automatic closing.Piston bucket type low-pressure vapor drain valve, nominal pressure be PN25, Maximum allwable temperature TMA425 ℃, maximum pump discharge greater than 6000Kg/h, can satisfy technical parameter Automatic steam trap Trap users' such as the big discharge capacity of low pressure usage requirement.
In order to solve the problems of the technologies described above, the utility model comprises valve body, valve gap, and its characteristics are: a, valve body and arranged on left and right sides are respectively equipped with working medium inlet hole, exit orifice, are provided with the hole downwards along inlet hole on valve body, communicate 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 main valve seat, and its other end communicates with exit orifice.Valve body and valve gap are the moulding of foundry goods one-step casting, between valve body and the valve gap sealing gasket are housed, and adopt bolton, and inlet hole, exit orifice place are welded with flange respectively.B, main valve seat control frame are the cascade through hole, one end chamber internal thread connects main valve seat, and the other end is threaded with connecting plate, and the place all establishes through hole at main valve seat control frame external diameter step, main valve seat control frame inner chamber is equipped with main valve plug, and main valve seat control frame adopts with valve gap and is threaded.The inner chamber of c, guidance cap is equipped with valve guide, and the valve guide inner chamber is equipped with auxiliary valve core, and connecting rod is equipped with in guidance cap lower end, with straight pin connecting rod is connected with the guidance cap, with connecting rod and the guidance cap-linking part main valve seat control frame inner chamber of packing into.The other end of d, connecting rod passes the center hole on the connecting plate, in the davit hole of packing into, is connected with davit with the other end of bearing pin with connecting rod, is fixed by cotter pin.The center hole of well-bucket is passed in the lower end of e, davit, is fixed by locking nut, and the well-bucket inner chamber is equipped with the counterweight bucket.Air induction mast is equipped with in f, body cavity bottom centre, and employing is threaded, and on the valve body with in the hole that inlet hole communicates the tubular filter screen is housed, be equipped with on the plug screw plug screw pad adopt be threaded fixing; Be provided with sewage draining exit on right side, body cavity bottom, be threaded fixing with the employing of plug screw pad is housed on the plug screw.
The utility model can provide the big discharge capacity type mechanical steam valve of low pressure of a kind of PN25 to the user, satisfies the usage requirement of industries such as large-scale petroleum chemical industry, firepower to the high parameter Automatic steam trap Trap.Can in time get rid of water of condensation, steam leakage loss is little, Rate of load steam loss＜2%, the operating pressure scope big (0.01～1.6MPaG), 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 2.5mm steam vent, can eliminate the stifled and steam vapour lock of air gas, is active in one's movements, reliably, and noise is little, and long service life (greater than 16000 hours) needn't be adjusted, 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 the structure sectional view of a kind of piston bucket type low-pressure vapor drain valve of the utility model.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is an A place enlarged view among Fig. 1.
Fig. 4 is a kind of piston bucket type low-pressure vapor drain valve automatic closing system of the utility model schematic representation.
Fig. 5 is a kind of piston bucket type low-pressure vapor drain valve of the utility model " back seal " schematic representation.
Fig. 6 is the schematic representation of air, low-temperature condensate, condensed water in high temperature and steam in a kind of piston bucket type low-pressure vapor drain valve cavity of the utility model.
Fig. 7 is the initial schematic representation of the utility model working principle.
Fig. 8 closes main valve seat 5, auxiliary-seat (60 ° of conical surface places of main valve plug 7 inner chambers) view in the utility model working principle.
Fig. 9 opens the auxiliary-seat view in the utility model working principle.
The hole of Figure 10 for opening main valve seat 5 in the utility model working principle enters new recurrent state schematic representation.
Embodiment
In Fig. 1,2,3,4,5: valve body 1 and arranged on left and right sides is respectively equipped with working medium inlet hole 26, exit orifice 33, on valve body 1, be provided with the hole downwards along inlet hole 26, communicate with inlet hole 26, upwards on valve body 1, be provided with the hole, communicate with exit orifice 33 along exit orifice 33.Valve gap 2 is provided with the hole, and an end in hole communicates with main valve seat 5, and its other end communicates with exit orifice 33.Label 29 usefulness rivets for rame plates 30 are fixed on the top left side of valve gap 2.Valve body 1 and valve gap 2 strength condition pressure are PN25, all adopt the moulding of WCB foundry goods one-step casting, can satisfy Automatic steam trap Trap 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 ", between valve body 1 and the valve gap 2 Expanded graphite sealing gasket 4 are housed, and fastening with bolt 3, inlet hole 26, exit orifice 33 places are welded with flange 31 respectively.Main valve seat control frame 6 is the cascade through hole, and one end chamber internal thread connects main valve seat 5, and the other end is threaded with connecting plate 13.All establish 6 through holes 34 on main valve seat control frame 6 step place external diameters, its effect is: through hole 34 communicates with the c of cylinder chamber, makes main valve plug 7 tops be in the effect of vapor pressure and sinks, and opens main valve seat 5.Main valve seat 5 inner chambers are through hole, and its orifice end 27 is 90 ° of taper holes, and main valve seat control frame 6 inner chambers are equipped with main valve plug 7, and main valve plug 7 inner chambers are step through-hole, and 60 ° of taper hole transition are arranged between its macropore and the aperture, become auxiliary-seat.Main valve plug 7 external diameters are step-like, and its microcephaly holds 32 to be 90 ° of conical surfaces, and its effect is: make main valve plug 7 microcephalies hold 90 ° of conical surfaces of 32 and 90 ° of taper holes of main valve seat 5 orifice end 27 to match, open or close main valve seat 5.Main valve plug 7 lower end external diameters are provided with piston groove 35, and its effect is: be used for increasing the resistance in the leakage flow, make anxious poly-minimizing of the pressure reduction that causes leakage, after the pressure reduction that leaks all disappears, reach sealing purpose.Guidance cap 10 inner chambers are equipped with valve guide 8, and valve guide 8 upper end external diameters are 60 ° of conical surfaces, and its effect is: and the auxiliary-seat of the 60 ° of conical surfaces in auxiliary valve core 9 tops and 60 ° of taper hole transition of main valve plug 7 inner chambers matches.Valve guide 8 inner chambers are equipped with auxiliary valve core 9, auxiliary valve core 9 tops are 60 ° of conical surfaces, its effect is: the auxiliary-seat of the 60 ° of conical surfaces in auxiliary valve core 9 tops and 60 ° of taper hole transition of main valve plug 7 inner chambers matches, open or close auxiliary-seat, utilize 60 ° of conical surface self-alignments, close the auxiliary-seat hole automatically, make the auxiliary valve core 9 in closing closed procedure, have buffer function, reduced the wearing and tearing of auxiliary valve core, auxiliary-seat, increase the service life.Connecting rod 12 is equipped with in guidance cap 10 lower ends, connecting rod 12 is connected with guidance cap 10 with elastic cylindrical pin 11, and connecting rod 12 and the guidance cap 10 attachment portions main valve seat of packing into is controlled frame 6 inner chambers.The other end of connecting rod 12 passes the center hole on the connecting plate 13, in davit 15 holes of packing into, is connected with davit 15 with the other end of bearing pin 14 with connecting rod 12, and is fixing by cotter pin 16.The center hole of well-bucket 18 is passed in the lower end of davit 15, and fixing by locking nut 17, the effect of well-bucket 18 is: adopting, length, heavier well-bucket fitting piston area recently increase the opening force of valve.Well-bucket 18 tops are provided with steam vent 28, and its effect is: eliminate the stifled and steam vapour lock of air gas.Well-bucket 18 inner chambers are equipped with counterweight bucket 19, and its effect is: can come the weight of balance well-bucket 18 to make it to reach equilibrium of forces according to the weight of different pressures utilization increase and decrease counterweight bucket 19.The weight of well-bucket 18 is 1700 ± 20 grams, size Φ 140 * 150 * 1 (wall thickness) * 2 (top thickness), unit is mm, be to utilize the equilibrium equation formula to calculate to select well-bucket weight and size, the secondary valve opening Φ of adapted 2.8mm again, main valve hole Φ 8mm, filling the vapour height in Maximum differential pressure 1.7MPaG exerts oneself the equilibrium state well-bucket is 63.36mm, filling the vapour height in Minimum differntial pressure 0.05MPaG exerts oneself the equilibrium state well-bucket is 137.49mm, filling vapour height allowance is 12.51mm, can guarantee drain valve switch motion normal reliable in 0.05～1.7MPaG operating pressure differential scope.
Working principle of the present utility model is such: work as piston bucket type low-pressure vapor drain valve, be installed on the pipeline after, start working automatically as Fig. 6,7,8,9,10 signal.When low-temperature condensate passes through working medium inlet hole 26,25 filtrations enter air induction mast 20 through the tubular filter screen, and this moment, well-bucket 18 was in the bottom of valve body 1, and main valve seat 5 is the enable possition, low-temperature condensate is rapidly from exit orifice 33 discharging, meanwhile discharged air (seeing accompanying drawing 7).When low-temperature condensate drains soon, steam is full of well-bucket 18 inner chambers, after well-bucket 18 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 18 is greater than gravity, well-bucket 18 quickens to rise, driving connecting rod 12 driving auxiliary valve cores 9 moves upward, behind 60 ° of conical surface Contact Pair of valve guide 8 upper end external diameters valve seat, at this moment auxiliary valve core 9 is the 0.9mm stroke from closed position, glade plane space is 0.4mm, under the effect of auxiliary valve core 9 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 60 ° of conical surface self-alignments, automatically close the hole of auxiliary-seat, promote main valve plug 7 simultaneously and close with main valve seat 5, valve is closed condition (seeing accompanying drawing 8).Along with well-bucket 18 inner chamber steam reduce, buoyancy descends and sinks, at this moment auxiliary-seat a (60 ° of taper holes of main valve plug 7 inner chambers are auxiliary-seat) opens, and main valve seat 5 is still closed under the pressure at the c of cylinder chamber (main valve plug 7 inner chamber macropore places), and valve is little displacement condition (seeing accompanying drawing 9).Along with well-bucket 18 steam inside reduce, condensed water in high temperature increases, and buoyancy reduces and sinks.Back seal b (connecting plate 13 tops are close in the major diameter bottom surface of connecting rod 12) closes (seeing accompanying drawing 5), the through hole 34 of main valve seat control this moment frame 6 communicates with the c of cylinder chamber, make main valve plug 7 tops be in the effect of vapor pressure and sink, open main valve seat 5, valve is in big displacement condition, enters new periodic duty (seeing accompanying drawing 10)
In sum: the utility model employing working medium substantially horizontal is entered aperture 26 from valve body 1 left side and is advanced, and goes out the valve body 1 that aperture 33 substantially horizontals are discharged from the valve body right side, has made things convenient for user's pipe arrangement to install.Utilize 60 ° of conical surface self-alignments, close two valve seat orifice automatically, new SCCV shutdown system (seeing accompanying drawing 4) can compensate the error of generation automatically, the rigid collision that produces when avoiding closing, make auxiliary valve core 9 in closing closed procedure, have buffer function, reduced the wearing and tearing of auxiliary valve core 9 and auxiliary-seat, increased the service life, closed all very reliable after making the drain valve use initial stage and wearing and tearing, and switch motion is very sensitive, at pressure reduction less than also can regular event under the 0.05MPaG.
Claims (5)
1, a kind of piston bucket type low-pressure vapor drain valve comprises valve body (1), valve gap (2), it is characterized in that:
A, valve body (1) and arranged on left and right sides are respectively equipped with working medium inlet hole (26), exit orifice (33), are provided with the hole downwards on valve body (1) along inlet hole (26), communicate with inlet hole (26); Upwards on valve body (1), be provided with the hole along exit orifice (33), communicate with exit orifice (33); Valve gap (2) is provided with the hole, and an end in hole communicates with main valve seat (5), and its other end communicates with exit orifice (33); Valve body (1) and valve gap (2) are the moulding of foundry goods one-step casting; Between valve body (1) and the valve gap (2) sealing gasket (4) is housed, adopts bolt (3) fastening; Inlet hole (26), exit orifice (33) locate to be welded with respectively flange (31);
B, main valve seat control frame (6) are the cascade through hole, connect main valve seat (5) in the one end chamber, and the other end is connected with connecting plate (13), and the place all establishes through hole (34) at main valve seat control frame (6) external diameter step, and main valve seat control frame (6) inner chamber is equipped with main valve plug (7); Main valve seat control frame (6) adopts with valve gap (2) and is threaded.
C, guidance cap (10) inner chamber are equipped with valve guide seat (8), valve guide seat (8) inner chamber is equipped with auxiliary valve core (9), connecting rod (12) is equipped with in guidance cap (10) lower end, with straight pin (11) connecting rod (12) is connected with guidance cap (10), with connecting rod (12) and guidance cap (10) attachment portion main valve seat control frame (6) inner chamber of packing into;
The other end of d, connecting rod (12) passes the center hole on the connecting plate (13), in the davit of packing into (15) hole, is connected with davit (15) with the other end of bearing pin (14) with connecting rod (12), and is fixing by cotter pin (16);
The center hole of well-bucket (18) is passed in the lower end of e, davit (15), and fixing by locking nut (17), well-bucket (18) inner chamber is equipped with counterweight bucket (19);
Air induction mast (20) is equipped with at f, valve body (1) intracavity bottom center, in the hole that valve body (1) is gone up with inlet hole (26) communicates tubular filter screen (25) is housed, and is threaded fixing by plug screw pad (24) employing is housed on the plug screw (23); Be provided with sewage draining exit on valve body (1) intracavity bottom right side, be threaded fixing by plug screw pad (22) employing is housed on the plug screw (21).
2, a kind of piston bucket type low-pressure vapor drain valve according to claim 1 is characterized in that: main valve plug (7) inner chamber is a step through-hole, and 60 ° of taper hole transition are arranged between its macropore and the aperture, becomes auxiliary-seat; Auxiliary valve core (9) top is 60 ° of conical surfaces.
3, a kind of piston bucket type low-pressure vapor drain valve according to claim 1 is characterized in that: main valve seat (5) inner chamber is a through hole, and its orifice end (27) is 90 ° of taper holes.
4, a kind of piston bucket type low-pressure vapor drain valve according to claim 1 is characterized in that: main valve plug (7) external diameter is step-like, and its little head end (32) is 90 ° of conical surfaces, and main valve plug (7) lower end external diameter is provided with piston groove (35).
5, a kind of piston bucket type low-pressure vapor drain valve according to claim 1 is characterized in that: well-bucket (18) top is provided with exhaust hole (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820181645XU CN201322180Y (en) | 2008-12-27 | 2008-12-27 | Piston bucket type low pressure steam trap valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820181645XU CN201322180Y (en) | 2008-12-27 | 2008-12-27 | Piston bucket type low pressure steam trap valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201322180Y true CN201322180Y (en) | 2009-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820181645XU Expired - Fee Related CN201322180Y (en) | 2008-12-27 | 2008-12-27 | Piston bucket type low pressure steam trap valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201322180Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2716102C1 (en) * | 2018-12-14 | 2020-03-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) | Condensate trap |
-
2008
- 2008-12-27 CN CNU200820181645XU patent/CN201322180Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2716102C1 (en) * | 2018-12-14 | 2020-03-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) | Condensate trap |
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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: 20091007 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |