CN203176711U - High-pressure single guide natural gas drain valve - Google Patents
High-pressure single guide natural gas drain valve Download PDFInfo
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- CN203176711U CN203176711U CN 201320176508 CN201320176508U CN203176711U CN 203176711 U CN203176711 U CN 203176711U CN 201320176508 CN201320176508 CN 201320176508 CN 201320176508 U CN201320176508 U CN 201320176508U CN 203176711 U CN203176711 U CN 203176711U
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Abstract
The utility model relates to a high-pressure single guide natural gas drain valve, which is characterized in that a liquid split component 31 is arranged in the middle of the upper part of an upper shell 11 in the way of penetrating through the upper shell 11, wherein one end of the liquid split component 31 penetrates through a flange fixing plate 32 and is welded with a connecting plate 33, and the other end of the liquid split component 31 is welded with a water inlet connecting pipe 38; a single guide limiting component 12 is connected to a fixable sealing gasket 7; a double floating ball linkage component 5 moves in a guide sleeve 46; one end of a long lever 50 is connected with a valve core bracket 51, and the other end of the long lever 50 is connected with double floating balls 41; one end of a short lever 54 is connected with a valve core bracket 51, and the other end of the short lever 54 is connected with a flotation increasing member 20; a valve core 55 is arranged in a valve core bracket 51; a valve seat 58 is connected to a valve seat fixing plate 57 by using threaded connection; a connecting shaft 60 penetrates through a fixing block I59-1, a connecting block I56-1, a connecting block II56-2 and a fixing block II59-2 in sequence; the valve core bracket 51 is connected with the valve seat fixing plate 57; a valve seat component connecting plate 24 is connected below the valve seat fixing plate 57; the lower end of a middle hole of the valve seat component connecting plate 24 is welded with a water outlet connecting pipe 25; and the water outlet connecting pipe 25 penetrates through a segmentation cavity wall. The high-pressure single guide natural gas drain valve has the advantages of small size and low cost and meets the technical requirements of no leakage.
Description
Technical field
The utility model relates to a kind of rock gas drain valve, leads the rock gas drain valve more specifically to a kind of high pressure list.
Background technique
At present, domestic existing rock gas drain valve nominal pressure is 10.0MPa, Maximum operating pressure 8.0MPa, and also not having nominal pressure is 15.0MPa, Maximum operating pressure 10.0MPa high pressure list is led the rock gas drain valve.
The model utility content
The technical problems to be solved in the utility model is: under the high-pressure work pressure of 10.0Mpa, can discharge proportion only has 0.6～0.65 medium (condensate); Solve the accuracy that two floats are taken a seat, to satisfy the parameter request of zero leakage; Reduce overall volume and installing space to greatest extent; Under abominable sand dust operating mode, prolong the working life of valve seat, use the water of condensation of equipment and the discharge of condensate to satisfy domestic high-pressure natural gas.
The utility model comprises unidirectional partition type lower shell body, upper shell, separating liquid assembly, fixable type sealing gasket, single guide and limit assembly, two ball float linked component, mangetic core assembly, valve component, increases floating part and valve component connecting plate, and its characteristics are:
Between a, unidirectional partition type lower shell body and the upper shell fixable type sealing gasket is housed, connects by special-purpose stud I, the thickening hexagon nut is fixed.The right side of unidirectional partition type lower shell body is provided with the cavity of cutting apart of unidirectional little cavity, cuts apart sealing gasket I is housed between cavity and the blind plate, is connected by special-purpose stud II, and hexagon nut I fixes.Connect single guide and limit assembly at the fixable type sealing gasket, all have hexagon head bolt I to connect, hexagon nut II fixes.
B, upper shell top left side are welded with the manometer tube joint, and its right side is welded with equal aluminium hydraulic pressed connecting pipe, and all the other end of aluminium hydraulic pressed connecting pipe is welded with the isostatic pressing orchid, and the forward and backward symmetry at upper shell top is welded with hanger.Pass upper shell in the middle of the upper shell top separating liquid assembly is housed, separating liquid assembly one end passes the flange fixed plate, is welded to connect plate, and sealing gasket II is housed between fixed plate and the connecting plate, is connected hexagon nut III by stud bolt.The separating liquid assembly the other end is welded with water intake and takes over, and the other end that water intake is taken over is welded with the water intake flange; Three fixable type supporting legs of unidirectional partition type lower shell body lower end welding.
C, spool support left side are welded with long lever, and its right side is welded with short lever, and free correcting spool is housed in the support step hole, and antifouling board is equipped with in spool support upper-end surface, and II is fixedly connected by hexagon head bolt.Valve seat adopts and is threaded on the valve seat fixed plate, valve seat fixed plate bottom is threaded by hexagon head bolt III with the valve component connecting plate, coupling shaft passes fixed block I, contiguous block I, contiguous block II, fixed block II successively, concentric hole III, concentric hole IV on coupling shaft and fixed block I, the fixed block II are interference fit, do not have relative movement.Concentric hole I, concentric hole II on coupling shaft and contiguous block I, the contiguous block II is Spielpassung.The short lever on spool support right side with increase floating part and be connected, fixed by the hexagon nut IV.The long lever in spool support left side is connected with two ball float linked components, and cotter pin is fixed.The lower end of valve component connecting plate intermediate hole is welded with water outlet and takes over, the cavity wall of cutting apart that passes the little cavity of unidirectional partition type lower shell body right one-way is taken in water outlet, the other end that water outlet is taken over is welded with water-output flange, the break-through housing is welded with blowdown connection in the middle of unidirectional partition type lower shell body bottom, and the other end of blowdown connection is welded with the blowdown flange.
The utility model can provide a kind of high-pressure natural gas transfer line and high-pressure natural gas of being applicable to use equipment to the user, nominal pressure 15.0MPa, the high pressure list of Maximum operating pressure 10.0MPa is led the rock gas drain valve, its advantage is: the unidirectional cavity design of cutting apart, to reduce the housing volume, reduce cost.Water intake and water outlet high in and low out design form the liquid level pressure head in housing, be conducive to medium and discharge.Single guidance set design, the eccentric force of having avoided shutdown system to produce makes and closes the power free of losses, to guarantee the parameter request of zero leakage; Cantilever increases the design of floating part, and it is excessive overweight and cause the problem that the link place is easy to wear and housing is excessive, cost is too high to have solved two ball float shutdown systems.Built-in separating liquid assembly prevents that medium from directly impacting ball float, improves the sealing of shutdown system; The design of built-in antifouling board prevents that sealing surface of seat from being damaged by dirt, causes leakage.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 leads rock gas drain valve structural representation for a kind of high pressure list of the utility model.
Fig. 2 is the right elevation of Fig. 1.
Fig. 3 is the plan view of Fig. 1.
Fig. 4 is the worm's eye view of Fig. 1.
Fig. 5 is the structure enlarged diagram of two ball float linkage units 5 among Fig. 1.
Fig. 6 analyses and observe enlarged diagram for the structure of single guide and limit assembly 12 among Fig. 1.
Fig. 7 is the plan view of Fig. 6.
Fig. 8 analyses and observe enlarged diagram for the structure of separating liquid assembly 31 among Fig. 1.
Fig. 9 analyses and observe enlarged diagram for mangetic core assembly 2 structures among Fig. 1.
Figure 10 is the plan view of Fig. 9.
Figure 11 is the worm's eye view of Fig. 9.
Figure 12 analyses and observe enlarged diagram for spool support 51 structures among Fig. 9.
Figure 13 is the worm's eye view of Figure 12.
Figure 14 analyses and observe enlarged diagram for the structure of valve component 23 among Fig. 1.
Figure 15 is the plan view of Figure 14.
Figure 16 is the right elevation of Figure 14.
Figure 17 is that the structure after mangetic core assembly 2 is assembled with valve component 23 among Fig. 1 is analysed and observe enlarged diagram.
Figure 18 analyses and observe enlarged diagram for the structure that increases floating part 20 among Fig. 1.
Figure 19 is the right elevation of Figure 18.
Figure 20 leads the schematic representation of rock gas, low temperature water, low temperature water and condensate mixture in the rock gas drain valve cavity for a kind of high pressure list of the utility model.
Figure 21 is the initial schematic representation of the utility model working principle.
Figure 22 floats the hull-borne schematic representation for two ball float linkage units 5 in the utility model working principle.
Figure 23 is two ball float linkage unit 5 whereabouts closed condition schematic representation in the utility model working principle.
Embodiment
In Fig. 1,2,3,4,6,7,8: between unidirectional partition type lower shell body 1 and the upper shell 11 fixable type sealing gasket 7 is housed, connects by special-purpose stud I10, thickening hexagon nut 9 is fixing.Upper shell 11, unidirectional partition type lower shell body 1 are by the PN150 design, full forged steel pieces, and case material, Intensity Design etc. meets " GB150-2011 pressurized container ".The right side of unidirectional partition type lower shell body 1 is provided with the cavity of cutting apart of unidirectional little cavity, and its effect is: reduce volume, reduce cost.Cut apart between cavity and the blind plate 18 sealing gasket I19 is housed, connected by special-purpose stud II16, hexagon nut I17 fixes.Connect single guide and limit assembly 12 at fixable type sealing gasket 7, connected by hexagon head bolt I8 respectively by 3 attachment hole I63, hexagon nut II6 fixes.Single guide and limit assembly 12 is welded by guide sleeve 46 and connecting sheet 45, all establishes attachment hole I63 on connecting sheet 45.Upper shell 11 top left side are welded with manometer tube joint 13, and its right side is welded with equal aluminium hydraulic pressed connecting pipe 15, and all the other end of aluminium hydraulic pressed connecting pipe 15 is welded with isostatic pressing orchid 14.The forward and backward symmetry in upper shell 11 tops is welded with hanger 37.Pass upper shell 11 in the middle of the top of upper shell 11 separating liquid assembly 31 is housed.Separating liquid assembly 31 is formed by punching net 47 and mesh grid 48 spot welding, separating liquid assembly 31 1 ends are welded to connect plate 33 after passing flange fixed plate 32, between fixed plate 32 and the connecting plate 33 sealing gasket II34 is housed, connected by stud bolt 35, hexagon nut III36 fixes, separating liquid assembly 31 the other end internal diameters are welded with stiffening ring 49, and stiffening ring 49 internal diameters are installed with water intake and take over 38, and the other end of water intake adapter 38 is welded with water intake flange 39.The effect of separating liquid assembly 31 is: prevent that high-pressure water flow from impacting two ball float linked components 5 and causing the unstable sealability that influences of valve opening and closing.Three fixable type supporting legs 26 of unidirectional partition type lower shell body 1 lower end welding.
In Fig. 9,10,11,12,13: mangetic core assembly 2 comprises spool support 51, long lever 50, short lever 54, spool support 51 is rectangular, its bilateral symmetry is provided with auxiliary hole I65-1, auxiliary hole II65-2, and an end of long lever 50 is connected the back welding with auxiliary hole I65-1 on the spool support 51.One end of short lever 54 is connected the back welding with auxiliary hole II65-2 on the spool support 51.Long lever 50 is square, and its other end is the U-shaped shape, and U-shaped shape bilateral symmetry is provided with attachment hole 66; Short lever 54 is square, and its other end is cylindrical with connecting through hole 68 joints that increase floating part 20, and the end of short lever 54 is screw thread.Spool support 51 upper center are provided with support step hole 61 and uniform 3 tapped holes 69, and its bottom is arranged with contiguous block I56-1, contiguous block II56-2, and two contiguous blocks are arranged with concentric hole 67 respectively.Free correcting spool 55 is housed in the support step hole 61, and antifouling board 52 is equipped with in spool support 51 upper-end surfaces, is connected by hexagon head bolt II53.
In Figure 14,15,16: valve component 23 comprises valve seat fixed plate 57, valve seat 58, fixed block I59-1, fixed block II59-2, valve seat fixed plate 57 is rectangular, the valve seat fixed plate is all established 4 for 57 4 jiaos and is connected screw 62, the centre is provided with step screw 70, and the right side of valve seat fixed plate 57 is arranged with fixed block I59-1, fixed block II59-2.Valve seat 58 upper ends are hexagon, and its lower end is screw thread, and the centre is provided with through hole, and valve seat 58 is threaded by step screw 70 with valve seat fixed plate 57.
In Fig. 1,5,17,18,19: valve seat fixed plate 57 bottoms are passed connection screw 62 respectively by 4 hexagon head bolt III27 and are threaded with valve component connecting plate 24, coupling shaft 60 passes fixed block I59-1, contiguous block I56-1, contiguous block II56-2, fixed block II59-2 successively, concentric hole III71-1, concentric hole IV on coupling shaft 60 and fixed block I59-1, the fixed block II59-2 are interference fit, do not have relative movement.Concentric hole I67-1, concentric hole II67-2 on coupling shaft 60 and contiguous block I56-1, the contiguous block II56-2 are Spielpassung, can guarantee that like this mangetic core assembly opens and closes flexibly.The short lever 54 on spool support 51 right sides with increase floating part 20 and be connected, put spring washer 21, fastening by hexagon nut IV 22.Increase floating part 20 for cylindrical, be provided with connecting through hole 68 in the middle of its cylinder, connecting through hole 68 two ends are step.The long lever 50 in spool support 51 left sides is connected with two ball float linked components 5.Two ball float linked components 5 are to be threaded by two ball floats 64 and two ball float 41 to form, and two ball floats 64 lower ends are welded with internal thread seat 44, and two ball floats 41 upper ends are welded with outside thread seat 43, and the welding rear thread connects.Two ball floats 41 lower ends are welded with axis pin base 40, and axis pin base 40 is provided with pin shaft hole, and cotter pin 3 is fixed by pin shaft hole.Two ball float linked components 5 move up and down in guide sleeve 46.The lower end of valve component connecting plate 24 intermediate holes is welded with water outlet and takes over 25, the cavity wall of cutting apart of the little cavity of unidirectional partition type lower shell body 1 right one-way is passed in water outlet adapter 25, the other end of water outlet adapter 25 is welded with water-output flange 30, the break-through housing is welded with blowdown connection 29 in the middle of unidirectional partition type lower shell body 1 bottom, and the other end of blowdown connection 29 is welded with blowdown flange 28.
Working principle of the present utility model is such: when the high pressure list is led after the rock gas drain valve is installed on the pipeline, start working automatically as Figure 20,21,22,23 signal.Two ball float linkage unit 5 no buoyancy of initial stage, spool 55 is landed on the valve seat 58, drain valve is in closed condition, the mouth of pipe of a large amount of rock gases by water intake flange 39 enters and is full of housing top in the valve, the bottom is water, and blue 15 mouths of pipe of natural gas via case top isostatic pressing are discharged in the rock gas gas equipment (seeing the Figure 21 that bows).Discharge along with rock gas, water and condensate and part rock gas enter cavity by separating liquid assembly 31, the rock gas still mouth of pipe of the isostatic pressing orchid 15 by case top enters in the gas equipment, and the buoyancy that water and condensate produce, under the driving that increases buoyancy that increases floating part 20 generations, two ball float linkage units 5 overcome 10.0MPa pressure and drive 50 risings of stock thick stick, and spool 55 and valve seat 58 are broken away from, and water, condensate are taken over 25 from water outlet rapidly and discharged (seeing accompanying drawing 22).After water and condensate discharge, two ball float linkage unit 5 loss of buoyance drive stock thick stick 50 and descend, and close under the leading role of guide sleeve 46, increase floating part 20 and reset, spool 55 accurately is landed on the valve seat 58, and drain valve stops discharging and closes (seeing accompanying drawing 23) again.Because closing property of drain valve is fine, and remains the certain liquid level water seal in the housing, therefore guarantee rock gas zero leakage state.
In sum: the utility model adopts the unidirectional cavity design of cutting apart, and to reduce the housing volume, reduces cost.Employing high in and low out design forms the liquid level pressure head in housing, be conducive to medium and discharge.Single guiding design, the eccentric force of having avoided shutdown system to produce makes and closes the power free of losses, serves as zero parameter request to guarantee leakage rate; Increase the design of float means, it is excessive overweight and cause sealing surface easy damaged and housing is excessive, cost is too high problem to have solved two ball float shutdown systems.Built-in separating liquid assembly 31 prevents that medium from directly impacting float, improves the sealing of shutdown system; The design of built-in antifouling board 52 prevents that the sealing surface of valve seat 58 from being damaged by dirt, causes leakage.Thereby realize leak free technical requirements under the high-pressure natural gas drain valve 10.0MPa, and volume is little, cost is low.
Claims (7)
1. a high pressure list is led the rock gas drain valve, comprise unidirectional partition type lower shell body (1), upper shell (11), separating liquid assembly (31), fixable type sealing gasket (7), single guide and limit assembly (12), two ball float linked component (5), mangetic core assembly (2), valve component (23), increase floating part (20) and valve component connecting plate (24), it is characterized in that:
Between a, unidirectional partition type lower shell body (1) and the upper shell (11) fixable type sealing gasket (7) is housed, connects by special-purpose stud I (10), thickening hexagon nut (9) is fixing; The right side of unidirectional partition type lower shell body (1) is provided with the cavity of cutting apart of unidirectional little cavity, cuts apart sealing gasket I (19) is housed between cavity and the blind plate (18), is connected by special-purpose stud II (16), and hexagon nut I (17) is fixing; Connect single guide and limit assembly (12) at fixable type sealing gasket (7), all have hexagon head bolt I (8) to connect, hexagon nut II (6) is fixing;
B, upper shell (11) top left side are welded with manometer tube joint (13), and its right side is welded with equal aluminium hydraulic pressed connecting pipe (15), and all the other end of aluminium hydraulic pressed connecting pipe (15) is welded with isostatic pressing orchid (14), and the forward and backward symmetry at upper shell (11) top is welded with hanger (37); Pass upper shell (11) in the middle of upper shell (11) top separating liquid assembly (31) is housed, separating liquid assembly (31) one ends pass flange fixed plate (32), be welded to connect plate (33), between fixed plate (32) and the connecting plate (33) sealing gasket II (34) is housed, connected by stud bolt (35), hexagon nut III (36) is fixing; Separating liquid assembly (31) the other end is welded with water intake and takes over (38), and the other end that water intake is taken over (38) is welded with water intake flange (39); Unidirectional partition type lower shell body (1) lower end welding three fixable type supporting legs (26);
C, spool support (51) left side are welded with long lever (50), its right side is welded with short lever (54), free correcting spool (55) is housed in the support step hole (61), and antifouling board (52) is equipped with in spool support (51) upper-end surface, and is fixedly connected by hexagon head bolt II (53); Valve seat (58) adopts and is threaded on the valve seat fixed plate (57), valve seat fixed plate (57) bottom is threaded by hexagon head bolt III (27) with valve component connecting plate (24), and coupling shaft (60) passes fixed block I (59-1), contiguous block I (56-1), contiguous block II (56-2), fixed block II (59-2) successively; Concentric hole III (71-1), concentric hole IV (71-2) on coupling shaft (60) and fixed block I (59-1), the fixed block II (59-2) are interference fit, and concentric hole I (67-1), concentric hole II (67-2) on coupling shaft (60) and contiguous block I (56-1), the contiguous block II (56-2) are Spielpassung; The short lever (54) on spool support (51) right side with increase floating part (20) and be connected, fixing by hexagon nut IV (22); The long lever (50) in spool support (51) left side is connected with two ball float linked components (5), and cotter pin (3) is fixing; The lower end of valve component connecting plate (24) intermediate hole is welded with water outlet and takes over (25), the cavity wall of cutting apart that (25) pass the little cavity of unidirectional partition type lower shell body (1) right one-way is taken in water outlet, the other end that (25) are taken in water outlet is welded with water-output flange (30), the break-through housing is welded with blowdown connection (29) in the middle of unidirectional partition type lower shell body (1) bottom, and the other end of blowdown connection (29) is welded with blowdown flange (28).
2. a kind of high pressure list according to claim 1 is led the rock gas drain valve, it is characterized in that: separating liquid assembly (31) is formed by punching net (47) and mesh grid (48) spot welding, separating liquid assembly (31) one ends are welded to connect plate (33) after passing flange fixed plate (32), between fixed plate (32) and the connecting plate (33) sealing gasket II (34) is housed, connected by stud bolt (35), hexagon nut V (36) is fixing, separating liquid assembly (31) the other end internal diameter is welded with stiffening ring (49), stiffening ring (49) internal diameter is installed with water intake and takes over (38), and the other end that water intake is taken over (38) is welded with water intake flange (39).
3. a kind of high pressure list according to claim 1 is led the rock gas drain valve, it is characterized in that: single guide and limit assembly (12), be welded by guide sleeve (46) and connecting sheet (45), and on connecting sheet (45), all establish attachment hole I (63).
4. a kind of high pressure list according to claim 1 is led the rock gas drain valve, it is characterized in that: two ball float linked components (5) are threaded by two ball floats (64) and two ball float (41) and form, two ball floats (64) lower end is welded with internal thread seat (44), two ball floats (41) upper end is welded with outside thread seat (43), and the welding rear thread connects; Two ball floats (41) lower end is welded with axis pin base (40), and axis pin base (40) is provided with pin shaft hole.
5. a kind of high pressure list according to claim 1 is led the rock gas drain valve, it is characterized in that: mangetic core assembly (2) comprises spool support (51), long lever (50), short lever (54); Spool support (51) is rectangular, and its bilateral symmetry is provided with auxiliary hole I (65-1), auxiliary hole II (65-2), and long lever (50) one ends are connected the back welding with auxiliary hole I (65-1) on the spool support; Short lever (54) one ends are connected the back welding with auxiliary hole II (65-2) on the spool support (51); The other end of long lever (50) is the U-shaped shape, and U-shaped shape bilateral symmetry is provided with attachment hole II (66), and the other end of short lever (54) is the step axle, and the end of short lever (54) is screw thread; Spool support (51) upper center is provided with support step hole (61) and uniform tapped hole (69), its bottom is arranged with contiguous block I (56-1), contiguous block II (56-2), is arranged with concentric hole I (67-1), concentric hole II (67-2) on contiguous block I (56-1), the contiguous block II (56-2) respectively.
6. a kind of high pressure list according to claim 1 is led the rock gas drain valve, it is characterized in that: valve component (23) comprises valve seat fixed plate (57), valve seat (58), fixed block I (59-1), fixed block II (59-2), valve seat fixed plate (57) is rectangular, the valve seat fixed plate is provided with for (57) four jiaos and connects screw (62), and the centre is provided with step screw (70); Valve seat (58) upper end is hexagon, and its lower end is screw thread, and the centre is provided with through hole, and valve seat (58) is threaded by step screw (70) with valve seat fixed plate (57); The right side of valve seat fixed plate (57) is arranged with fixed block I (59-1), fixed block II (59-2), is arranged with concentric hole III (71-1), concentric hole IV (71-2) on fixed block I (59-1), the fixed block II (59-2) respectively.
7. a kind of high pressure list according to claim 1 is led the rock gas drain valve, it is characterized in that: increase floating part (20) for cylindrical, be provided with connecting through hole (68) in the middle of its cylinder, connecting through hole (68) two ends are step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320176508 CN203176711U (en) | 2013-04-10 | 2013-04-10 | High-pressure single guide natural gas drain valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320176508 CN203176711U (en) | 2013-04-10 | 2013-04-10 | High-pressure single guide natural gas drain valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203176711U true CN203176711U (en) | 2013-09-04 |
Family
ID=49073403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320176508 Withdrawn - After Issue CN203176711U (en) | 2013-04-10 | 2013-04-10 | High-pressure single guide natural gas drain valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203176711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196030A (en) * | 2013-04-10 | 2013-07-10 | 甘肃红峰机械有限责任公司 | High-pressure single-guide natural gas trap |
-
2013
- 2013-04-10 CN CN 201320176508 patent/CN203176711U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196030A (en) * | 2013-04-10 | 2013-07-10 | 甘肃红峰机械有限责任公司 | High-pressure single-guide natural gas trap |
| CN103196030B (en) * | 2013-04-10 | 2015-11-25 | 甘肃红峰机械有限责任公司 | Natural gas steam trap led by a kind of high pressure list |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130904 Effective date of abandoning: 20151125 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |