CN201264995Y

CN201264995Y - Natural gas filter

Info

Publication number: CN201264995Y
Application number: CNU2008200351493U
Authority: CN
Inventors: 陶金龙; 谢勇军; 王雪良; 王明龙
Original assignee: CHANGSHU SHANGHAI FEIAO PRESSURE CONTAINER Co Ltd
Current assignee: CHANGSHU SHANGHAI FEIAO PRESSURE CONTAINER Co Ltd
Priority date: 2008-04-11
Filing date: 2008-04-11
Publication date: 2009-07-01
Anticipated expiration: 2018-04-11

Abstract

The utility model relates to a natural gas filter, which belongs to a filtering device used for the natural gas pipelines in petroleum collection and transfer projects, such as natural gas fields, gas transmission, distribution and pressure regulation system, and city gate stations. The natural gas filter comprises a barrel with an opening arranged at the upper part, a filter element arranged in the barrel, and a sealing mechanism used for sealing the opening; a raw gas inlet, a purified gas outlet and a drain are arranged on the barrel; the upper end of the filter element is close to the opening; the lower end of the filter element is communicated with the purified gas outlet; and the natural gas filter is characterized in that the sealing mechanism comprises a high neck extending on the top part of the barrel, a sealing cover, a quarter round, a protecting cover and a fixing screw. The natural gas filter has the advantages that the opening and closing of the container can be quick, convenient, time-saving and labor-saving, and the cost is saved; the sealing mechanism is provided with a self-locking structure, which pushes up the sealing cover by adopting the natural gas pressure inside the container, the sealing cover and the high neck are sealed through an O-shaped ring, and the quarter round pushed up the protecting cover, thereby the self-locking and sealing purpose is realized, the sealing property is good, the air leakage of the container can be prevented, and the incidence rate can be reduced.

Description

Natural gas filter

Technical field

The utility model relates to a kind of natural gas filter, belongs to natural gas line filtration unit in the oil gathering engineerings such as natural-gas field, gas transmission and distribution voltage-regulating system, urban gate station, is used for removing the solid particle polluter and the moisture content of Sweet natural gas.

Background technology

The Sweet natural gas that contains various solid particle polluters and moisture content at first will filter before use,, so just can enter user pipe and use with clean with the drying that guarantees source of the gas.Natural gas filter structure in the prior art is disclosed by Fig. 1, it comprises that a top (head) has the cylindrical shell 1 of opening 11, place the filter core 2 in the cylindrical shell 1, with the closure mechanism that is used for sealed open 11, described cylindrical shell 1 is provided with raw material gas inlet 12, clean gas outlet 13, sewage draining exit 14, the upper end of described filter core 2 extends to and is close to opening 11 positions, the lower end of filter core 2 is connected with clean gas outlet 13, and described closure mechanism comprises the flange 15 that extends on cylindrical shell 1 outer wall and be positioned at opening 11 places, by some groups of bolt assemblies (by bolt, nut constitutes) 9 with flange 15 fixed blind flanges 8, and be located at gasket seal 7 between flange 15 and the blind flange 8.The problem that closure mechanism in the said structure exposes in actual use is: because after adopting the mode of connection of flange, blind flange, bolt assembly, at every turn more during renew cartridge, need many people's operations, spend great amount of manpower and financial resources.With 3.0 type filters is example, change that filter core is minimum wants 3 people's operations, approximately need cost just can finish in 2 hours, and, whenever change filter core one time, gasket seal between flange and the blind flange need be changed once, and the cost of gasket seal 30 yuan/only, total replacement charge is approximately wanted 800 yuan/platform.To change with annual nearly 5000 needs in the whole nation, replacement charge is about 4,000,000/time.And every strainer generally needed to change 2-3 time in 1 year, and approximately total expenses takes 8,000,000～1,200 ten thousand yuan/year, has just wasted great amount of manpower and material resources, financial resources.

Summary of the invention

The purpose of this utility model is to provide a kind of more renew cartridge convenient, fast, both saves time, laborsaving, save cost again, and closure mechanism has the self-locking structure, good seal performance, safe and reliable natural gas filter.

The purpose of this utility model reaches like this, a kind of natural gas filter, it comprises that a top has the cylindrical shell of opening, place the intravital filter core of tube, with the closure mechanism that is used for sealed open, described cylindrical shell is provided with raw material gas inlet, clean gas outlet, sewage draining exit, the upper end of described filter core extends to and is close to the aperture position place, the lower end of filter core is connected with clean gas outlet, be characterized in: described closure mechanism comprises the hub that extends in the cylindrical shell top, sealing cover, four fens rings, protecting cover, and set screw, on the inwall of described hub, offer four fens ring draw-in grooves from top to bottom, the sealing cage; Described sealing cover places on the sealing cage, is installed with a double-screw bolt at the nearly medium position place of sealing cover; Described four minutes rings place the top of sealing cover, and with four fens ring draw-in groove scarves, the intermediate formation that encircled at four minutes had annular distance; Described protecting cover places the top of four fens rings and joins with the outer rim wall body of hub lid, offers screw in the centre of protecting cover, extends a location collar that is used for the annular distance build-in in the bottom center of protecting cover; Described set screw is rotated with bolt after passing screw.

The utility model also offers o-ring groove on the inwall of described hub, be embedded in a sealing-ring at o-ring groove, and the outer circle wall of sealing-ring and sealing cover closely cooperates.

Sealing-ring described in the utility model is the O RunddichtringO.

Ring was to piece together ring bodies by a pair of first ring body and a pair of second ring body in four minutes described in the utility model, and wherein: a pair of second ring body can move in annular distance.

The shape of a pair of first ring body described in the utility model is identical, and is positioned at the outside of ring bodies, is with respect to annular distance to be symmetrical arranged.

The shape of a pair of second ring body described in the utility model is identical, and is positioned at the centre of ring bodies, is with respect to annular distance to be symmetrical arranged.

The utility model extends in the wall body direction of described four minutes ring upper edge annular distances and is useful on the boss that plays the role of positioning with locating that collar cooperates.

The utility model is because after adopting said structure, one of advantage that has: open and close that container becomes fast, facility, save time, laborsaving, save cost again, as long as with 3.0 type filters is example, and more renew cartridge only needs people's operation, changes a filter core 15 minutes, the O RunddichtringO does not need to change yet, like this, approximately need 5000 of replacings to calculate, just can save about 700～1,100 ten thousand yuan of replacement charge so that the whole nation is annual; Two of advantage: closure mechanism has the self-locking structure, it is to utilize the pressure of self Sweet natural gas in the container with sealing cover jack-up, seal by O type circle between closed cover and hub, four fens rings reach the requirement of self-locking sealing with protecting cover jack-up, and are not only simple in structure, easy to use, and good seal performance, can effectively prevent the gas leakage of container, the incidence of reduction accident greatly.

Description of drawings

Fig. 1 is the structural representation of prior art.

Fig. 2 is an example structure synoptic diagram of the present utility model.

Fig. 3 is the perspective view of cylindrical shell head closure mechanism of the present utility model.

Among the figure: 1. cylindrical shell, 11. openings, 12. raw material gas inlet, 13. clean gas outlets, 14. sewage draining exits, 15. flanges, 16. hubs, 161. four fens ring draw-in grooves, 162. sealing cages, 163. o-ring grooves; 2. filter core; 3. sealing cover, 31. double-screw bolts, 311. screws, 32. set screws, 33. circular arc chamferings; 4. four fens rings, 41. annular distances, 42. boss, 4a. first ring body, 4b. second ring body; 5. protecting cover, 51. is located collars, 52. screws; 6. sealing-ring; 7. gasket seal; 8. blind flange; 9. bolt assembly.

Embodiment

By the description of applicant, will help to understand the utility model more, and positively effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to the utility model scheme embodiment.

See also Fig. 2 and in conjunction with Fig. 3, the utility model natural gas filter comprises cylindrical shell 1, filter core 2 and closure mechanism, described cylindrical shell 1 is cylindric, its top has that opening 11, left side have raw material gas inlet 12, right side and have clean gas outlet 13, the bottom has sewage draining exit 14, and raw material gas inlet 12, clean gas outlet 13, sewage draining exit 14 connect with the tube chamber of cylindrical shell 1 respectively; Described filter core 2 places in the tube chamber of cylindrical shell 1, and the front end of filter core 2 extends to the rear end that is close to opening 11 positions, filter core 2 and is connected with clean gas outlet 13; Described closure mechanism comprises hub 16, sealing cover 3, four minutes rings 4, protecting cover 5 and set screws 32, hub 16 extends integratedly in the over top of cylindrical shell 1, its shape is doline, on the inwall of hub 16, offer successively from top to bottom and encircled draw-in groove 161, o-ring groove 163, sealing cage 162 in four minutes, be embedded in O RunddichtringO 6 at o-ring groove 163; Sealing cover 3 is in the form of annular discs, place on the sealing cage 162 and and closely cooperate with sealing-ring 6, nearly medium position place at sealing cover 3 is installed with a double-screw bolt 31, the intermediate formation of double-screw bolt 31 has screw 311, is processed with circular arc chamfering 33 respectively at the excircle wall body of sealing cover 3 and the intersection between the last lower plane; Four fens rings 4 place the top of sealing cover 3, with four fens ring draw-in groove 161 scarves, it is the ring bodies of tool annular distance 41 in the middle of being pieced together by the first identical ring body 4a of a pair of shape, the second ring body 4b identical with a pair of shape, wherein: a pair of first ring body 4a is positioned at the outside of ring bodies, and be with respect to annular distance 41 and be symmetrical arranged, and a pair of second ring body 4b is positioned at the centre of ring bodies and be with respect to annular distance 41 and be symmetrical arranged, the a pair of second ring body 4b can move in annular distance 41, its effect be by a pair of second ring body 4b in annular distance 41 or outer translation, can realize separating or embedding of four fens rings 4 and four fens annular grooves 161 fast, it is more quick that thereby the keying that makes container becomes, simultaneously, encircled 4 wall body directions at four minutes and upwards extended boss 42 along annular distance 41 in order to increase stability and the localized accuracy that cooperates between four fens rings 4 and the protecting cover 5; Protecting cover 5 places four fens ring tops of 4 and cooperates with outer rim wall body around hub 16 tops, offers screw 52 in the centre of protecting cover 5, extends a location collar 51 that is used for annular distance 41 and boss 42 inner chamber build-ins in the bottom center of protecting cover 5; Set screw 32 is rotated with bolt 31 intermediary screws 311 after passing screw 52.

The utility model is when needs more during renew cartridge 2, at first protecting cover 5 intermediary set screws 32 are unloaded, then protecting cover 5 is removed, again with four fens ring 4 intermediary a pair of second ring body 4b to annular distance 41 in translation and break away from the scarf that encircled draw-in groove 161 in four minutes after, a pair of second ring body 4b is moved apart, after a pair of second ring body 4b moves apart, the a pair of first ring body 4a can be unloaded the ring draw-in groove 161 from four minutes, at last sealing cover 3 is opened, simple to operate, open quite quick.And after more renew cartridge 2 finishes, when need be with closure mechanism closed, at first sealing cover 3 is placed on the sealing cage 162 of hub 16, then four minutes are encircled 4 a pair of first ring body 4a elder generation and encircled draw-in groove 161 scarves in four minutes, get final product inserting in the draw-in groove 161 to four fens rings after a pair of second ring body 4b and a pair of first ring body 4a amalgamation again, then cover protecting cover 5, and make the location collar 51 of protecting cover 5 bottom center and encircled 4 annular distance 41 and boss 42 inner chamber build-ins in four minutes, be rotated with bolt 31 intermediary screws 311 after passing screw 52 with set screw 32 at last, simple to operate, closure is quite quick.

Working process of the present utility model is: the Sweet natural gas that contains solid particle polluter and moisture content at first enters in the tube chamber of cylindrical shell 1 from raw material gas inlet 12, pass through filter core 2 backs again by clean gas outlet 13 outflow filters, this working process here no longer describes in detail owing to identical with prior art.

Claims

1, a kind of natural gas filter, it comprises that a top has the cylindrical shell of opening (11) (1), place the filter core (2) in the cylindrical shell (1), with the closure mechanism that is used for sealed open (11), described cylindrical shell (1) is provided with raw material gas inlet (12), clean gas outlet (13), sewage draining exit (14), the upper end of described filter core (2) extends to and is close to opening (11) position, the lower end of filter core (2) is connected with clean gas outlet (13), it is characterized in that described closure mechanism comprises the hub (16) that extends in cylindrical shell (1) top, sealing cover (3), four fens rings (4), protecting cover (5), and set screw (32), on the inwall of described hub (16), offer four fens ring draw-in grooves (161) from top to bottom, sealing cage (162); Described sealing cover (3) places on the sealing cage (162), is installed with a double-screw bolt (31) at the nearly medium position place of sealing cover (3); Encircled the top that (4) place sealing cover (3) in described four minutes, with four fens ring draw-in groove (161) scarves, the intermediate formation that encircled (4) at four minutes had annular distance (41); Described protecting cover (5) place four minutes ring (4) the top and join with the outer rim wall body of hub (16) lid, offer screw (52) in the centre of protecting cover (5), extend a location collar (51) that is used for annular distance (41) build-in in the bottom center of protecting cover (5); Described set screw (32) is rotated with bolt (31) after passing screw (52).

2, natural gas filter according to claim 1, it is characterized in that on the inwall of described hub (16), also offering o-ring groove (163), be embedded in a sealing-ring (6) at o-ring groove (163), sealing-ring (6) closely cooperates with the outer circle wall of sealing cover (3).

3, natural gas filter according to claim 2 is characterized in that described sealing-ring (6) is the O RunddichtringO.

4, natural gas filter according to claim 1, it is characterized in that described four minutes the ring (4) be to piece together ring bodies by a pair of first ring body (4a) and a pair of second ring body (4b), wherein: a pair of second ring body (4b) can move in annular distance (41).

5, natural gas filter according to claim 4 is characterized in that the shape of described a pair of first ring body (4a) is identical, and is positioned at the outside of ring bodies, is with respect to annular distance (41) to be symmetrical arranged.

6, natural gas filter according to claim 4 is characterized in that the shape of described a pair of second ring body (4b) is identical, and is positioned at the centre of ring bodies, is with respect to annular distance (41) to be symmetrical arranged.

7, according to claim 1 or 4 described natural gas filters, it is characterized in that described four minutes ring (4) upper edge annular distance (41) the wall body direction extend and be useful on the boss (42) that plays the role of positioning with locating that collar (51) cooperates.