CN203239314U

CN203239314U - Vertical mounting sealing-pair zero-leakage drain valve for natural gas

Info

Publication number: CN203239314U
Application number: CN 201320176543
Authority: CN
Inventors: 雷娟; 李向旭; 王晓峰; 崔晓红
Original assignee: GANSU HONGFENG MACHINERY CO Ltd
Current assignee: GANSU HONGFENG MACHINERY CO Ltd
Priority date: 2013-04-10
Filing date: 2013-04-10
Publication date: 2013-10-16
Anticipated expiration: 2023-04-10

Abstract

The utility model relates to a vertical mounting sealing-pair zero-leakage drain valve for natural gas, which comprises a valve cover assembly, a valve body assembly and a control system assembly. The drain valve is characterized in that a winding seal pad I 12 is mounted between an upper middle flange 35 and a lower middle flange 36, and is connected with a floating ball guide positioning sleeve 9. An inlet connection pipe 30 is welded at the left side of a pipe body 34 in the valve cover assembly; a filter net inlet connection pipe 33 is welded at the right side of the pipe body 34; a filter net 2 is mounted from a hole of a flange II 3; one end of the inner diameter of the filter net 2 is sleeved into the inlet connection pipe 33 of which the other end is positioned by a blind plate 7; an outlet connection pipe 37 is welded at the right side of a lower pipe body 38 in the valve body assembly; a winding seal pad IV 18 mounted in a two-table hole 66 at the end face of the left side of a control frame connection flange 64 is connected with a control system assembly 19; and one end of a rod frame 23 is welded in a small hole 70 of a valve element fixing frame 52 while the other end is connected with a floating ball 8. The vertical mounting sealing-pair zero-leakage drain valve for the natural gas controls the whole drain valve by adopting the original vertical mounting sealing-pair control system, cracked sand, rubber articles and the like cannot be attached to the sealing face, and blockage of a valve element and a valve holder is avoided. The vertical mounting sealing-pair zero-leakage drain valve for natural gas is strong in adaptive capacity, small in size, easy to maintain, and simple and easy to replace, thus greatly alleviating the labor intensity of workers.

Description

A kind of natural gas is with sealing pair zero leakage drain valve vertically is installed

Technical field

The utility model relates to a kind of drain valve, uses more specifically to a kind of a kind of natural gas that is applicable to the complex working conditions such as high concentration of sediment, impurity sealing pair zero leakage drain valve vertically is installed.

Background technology

At present, known natural gas drain valve, just can not regular event under the complex working conditions such as high concentration of sediment, impurity, air leakage is large, the upper impurity because spool, sealing surface of seat easily fall causes closing that valve is tight or to drive valve not smooth, and leak rate is high, the defectives such as contaminated environment, existence are easily damaged, functional reliability is poor.The gas reservoir of Soviet Union's Sulige gas field is at the production initial stage, the continuous a large amount of fracturing sand of output in the gas well, reviving average 2 months of the drain valve of 20 operation areas will be in the tired sand that surpasses 10 centimetres of tank prodelta clay, fracturing sand is with the control spool outflow of liquid by drain valve, because the high pressure inside and outside the spool is poor, current and fracturing sand one superhigh speed pass through spool the time spool caused wearing and tearing, thereby spool is not closed completely when closing, phenomenon leaks air.What Soviet Union's Sulige gas field gas well adopted is the downhole choke technology, underground throttle device is by after the operation of a period of time, the rubber ring of underground throttle device can oldly decrease, and a lot of tiny rubber grains of generation, this particle is suspended in the water, when flowing through together drain valve with water, can the spool valve nozzle of drain valve be resulted in blockage, thereby cause drain valve not arrange liquid.Be applied to for the first time today from natural gas steam trap in 2006 in Soviet Union 20 wellblocks, 17 drain valves almost the outer appearance of none row above two problems.

The utility model content

The technical problems to be solved in the utility model is: overcome existing natural gas with drain valve can not regular event under the complex working conditions such as high concentration of sediment, impurity problem, the drain valve of a kind of stability and good reliability is provided, and namely a kind of natural gas is with sealing pair zero leakage drain valve vertically is installed.

The utility model comprises bonnet assemblies, valve component and control system assembly, and the valve gap in the bonnet assemblies is formed by end socket, body and upper flange butt welding; Valve body in the valve component is formed by lower flange, body and base butt welding, and its characteristics are:

Wound form sealing mat I is housed between a, upper flange and the lower flange, is connected by studs I, I type hex nut I fixes; Ball float guide-localization cover is housed on the wound form sealing mat I, is connected by hexagon-headed bolt, I type hex nut II fixes.

End socket crown center in b, the bonnet assemblies is welded with suspension ring, and the suspension ring right side is welded with equal aluminium hydraulic pressed connecting pipe, all blue welding of the other end of aluminium hydraulic pressed connecting pipe and isostatic pressing; The left side of the body in the bonnet assemblies is welded with inlet connection, and the other end of inlet connection is welded with flange I.The body right side is welded with the screen pack inlet connection, and the other end of screen pack inlet connection is welded with flange II.Screen pack is packed in flange II hole, and an end of screen pack internal diameter is inserted in inlet connection, and the other end of inlet connection is located with blind plate, and wound form sealing mat II is housed between blind plate and the flange II, is connected and fixed by studs II and 1 type hex nut III.

Lower tube body right side in c, the valve component is welded with discharge connection, and the other end of discharge connection is welded with flange III.Control frame adpting flange left end face is equipped with wound form sealing mat IV in two holes, the control system assembly is vertically installed and is fastened on the control frame adpting flange with four hexagon socket cap head screws.Between control frame adpting flange and the flange III wound form sealing mat III is housed, fastening with studs III and hex nut.The lower tube body rear is welded with blowdown connection, and the other end of blowdown connection is welded with flange IV.All weld three footing in the base bottom.

Control frame in d, the control system assembly is provided with valve seat orifice, and valve seat is housed in the hole, and sealing ring I is housed on the valve seat, and employing is threaded, and the valve seat center is provided with outage, and the aperture of outage is taper.Spool fixed mount center is provided with step through-hole, and spool is housed in the step through-hole, and baffle plate is housed on the hole end surface, passes baffle plate by hexagon-headed bolt II and is fixedly connected with screw on the spool fixed mount.Bridge one end is welded in the aperture of spool fixed mount, and the bridge other end is connected with floating ball component.U-shaped position-limited rack is symmetrically welded at the control frame left and right sides, and left cantilever, right cantilever are symmetrically welded at respectively the control frame left and right sides.Bearing pin passes left cantilever, spool fixed mount, right cantilever successively, and cottor pin is fixed.

The utility model can in time be got rid of water and the impurity in the natural gas, without natural gas leaking.The utility model adopts the vertical installation sealing pair control system of original creation that whole drain valve controlled, fracturing sand, rubber grain etc. can not be bonded on the sealing surface, avoid the impurity such as fracturing sand, rubber grain that the spool valve nozzle of drain valve is resulted in blockage, thereby caused the drain valve not arrange the phenomenons such as liquid or natural gas leaking.The outstanding features such as the utility model adopts " L " type bar linkage structure to compare with the product of prior art " " type bar linkage structure, has a volume little, simple in structure, and cost is low.The utility model adopts the Split type structure design, when spool weares and teares the replacing of appearance needs normally, drain valve only need to be opened several stove bolts, the valve nozzle of spool is taken out replacing just, and changing easily simply, a general people just can change in tens minutes, has greatly alleviated workman's labour intensity, common gas production workman can both finish, and does not need the professional technique workman.Existing drain valve is but because the design shortcoming, changing spool needs two or three people jointly to cooperate, to make simultaneously a large amount of bolts and revolve the work of opening, talk about smoothly every drain valve and change two hours around of spool, could realize after almost whole drain valve will being dismembered, take time and effort, can better not adapt to the situation that existing eliminator sediment yield works the mischief to valve plug of drain valve greatly.The utility model has solved nearly all deficiency of existing drain valve, more adapts to Soviet Union's Sulige gas field liquid many, and sand is many, the manufacturing condition demand that slag is many.The utility model is adaptable, volume is little, maintenance is easy.

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 natural gas of the utility model structure cross-sectional schematic that sealing pair zero leakage drain valve vertically is installed.

Fig. 2 is the top view of Fig. 1.

Fig. 3 is the structure sectional view of bonnet assemblies 1 among Fig. 1.

Fig. 4 is the structural representation of valve component 24 among Fig. 1.

Fig. 5 is A place enlarged drawing among Fig. 1.

Fig. 6 is the top view of Fig. 5.

Fig. 7 is the structural representation of control frame 42 among Fig. 5.

Fig. 8 is the left view of Fig. 7.

Fig. 9 is the right view of Fig. 7.

Figure 10 is the top view of Fig. 7.

Figure 11 is the structure sectional view of spool fixed mount 52 among Fig. 5.

Figure 12 is the top view of Figure 11.

Figure 13 is the structural representation of floating ball component 8 among Fig. 1.

Figure 14 is that the ball float guide-localization overlaps 9 structure cross-sectional schematic among Fig. 1.

Figure 15 is the structural representation of wound form sealing mat I12 among Fig. 1.

Figure 16 is the structure cross-sectional schematic of reducing adpting flange assembly 17 among Fig. 1.

Figure 17 is a kind of natural gas of the utility model schematic diagram that air, natural gas, condensate and liquid mixture, impurity and sandstone in the sealing pair zero leakage drain valve cavity vertically are installed.

Figure 18 is the initial schematic diagram of the utility model operating principle;

Figure 19 opens the valve view in the utility model operating principle;

Figure 20 is close valve state schematic diagram in the utility model operating principle;

Figure 21 is that ball float rises in the utility model operating principle, enters new recurrent state schematic diagram.

The specific embodiment

Fig. 1,2,3,4,, in 5,6,7,8,9,10,11,12,13,14,15,16: the valve gap 1 in the bonnet assemblies is formed by end socket 31,

body

34 and 35 butt welding of upper flange; Valve body 24 in the valve component is formed by lower flange 36, body 38 and base 39 butt welding.The wall thickness of valve gap 1 and valve body 24 and pressure and temp grade meet the regulation of GB/T12224-2005 " steel valve General Requirements ".Wound form sealing mat I12 is housed between upper flange 35 and the lower flange 36, is connected by studs I14, I type hex nut I13 fixes.Uniform 6 elliptical holes 63 of wound form sealing mat I12 inner ring, the effect of elliptical hole 63 is: be used for fixing ball float guide-localization cover 9, adjust 6 elliptical holes of site error 63 and overlap 6 uniform on 9 through holes 62 with the ball float guide-localization, connected by hexagon-headed bolt 10 respectively, I type hex nut 11 is fixing.The effect of ball float guide-localization cover 9 is: can guarantee that ball float 57 has correct movement locus, prevent the inclination of ball float 57 in motion process, eliminate the leakage that ball float 57 unanticipated actions cause, zero of natural gas reveals in the time of guaranteeing Auto-drainage, also can prevent ball float 57 under off working state collision and cause damaging.End socket 31 crown centers in the bonnet assemblies are welded with suspension ring 28, and suspension ring 28 right sides are welded with equal aluminium hydraulic pressed connecting pipe 32, all blue 29 welding of the other end of aluminium hydraulic pressed connecting pipe 32 and isostatic pressing.The left side of the body 34 in the bonnet assemblies is welded with inlet connection 30, and the other end of inlet connection 30 is welded with flange I27.Body 34 right sides are welded with screen pack inlet connection 33, and the other end of screen pack inlet connection 33 is welded with flange II3.Screen pack 2 is packed in flange II3 hole; one end of screen pack 2 internal diameters is inserted in inlet connection 33; the effect of screen pack 2 is: on the one hand impurity is played a role in filtering, on the other hand ball float 57 is played certain protective effect, prevent that high velocity liquid stream is to the direct impact of ball float.The other end of inlet connection 33 is equipped with wound form sealing mat II4 with blind plate 7 location between blind plate 7 and the flange II3, be connected and fixed by studs II6 and 1 type hex nut III5.Lower tube body 38 right sides in the valve component are welded with discharge connection 37, and the other end of discharge connection 37 is welded with flange III15.Control frame adpting flange 64 left end face are equipped with wound form sealing mat IV18 in two holes 66, control system assembly 19 are vertically installed and are fastened on the control frame adpting flange 64 with four hexagon socket cap head screws.Between flange III15 and the control frame adpting flange 64 wound form sealing mat III16 is housed, fastening with studs III21 and hex nut 22.Control frame adpting flange 64 and reducing adapter 65 become reducing adpting flange assembly 17 with flange V20 assembly welding, are provided with through hole in the reducing adpting flange assembly 17.The effect of reducing adpting flange assembly 17 is: increase on the one hand the arm of force of control system, obtain large open and close valve power, thereby reduce valve volume; Change on the other hand spool simply easy, a general people just can change in tens minutes, has greatly alleviated workman's labour intensity.Be welded with blowdown connection 41 at lower tube body 38 rears, the other end of blowdown connection 41 is welded with flange IV26.All weld three footing 40 in base 39 bottoms.Control frame 42 in the control system assembly 19 is provided with valve seat orifice 55, and valve seat 44 is housed in the hole, and sealing ring I43 is housed on the valve seat 44, and employing is threaded, and valve seat 44 centers are provided with outage 54, and the aperture of outage 54 is taper.Spool fixed mount 52 centers are provided with step through-hole 69, are provided with step screw 71 around the hole, and spool fixed mount 52 is rectangle, and an end is the U-shaped shape, and the other end is circular, is arranged with respectively connecting hole 68 on the U-shaped shape, is provided with aperture 70 at round nose.In the step through-hole 69 of spool fixed mount 52 spool 48 is housed, is matched in clearance.The head of spool 48 is spherical, and its effect is: but automatic capturing, and self-centering can guarantee that spool 48 can be by correct track switch valve, eliminates the impact, vibrations etc. of the swing of ball float 8 and medium and the pass valve that causes is tight or to drive valve not smooth.The afterbody of spool 48 is provided with blind hole, is bumped into steel ball 47 and valve seat 44 oral area conical surface outages 54 fitted seal in the hole.Adopt the effect of steel ball and cone match sealing to be: to increase mar proof, make spool 48 darker be absorbed in valve seat 48, but guaranteed sealing, wearing and tearing after auto-compensation, can fully guarantee in the drain valve have, natural gas is zero leakage in the anhydrous situation, and application life was greater than 16000 hours (more than 2 years).Baffle plate 50 is housed on the hole end surface, and the effect of baffle plate 50 is: spacing to spool 48, and pass baffle plate 50 by hexagon-headed bolt II49 and be fixedly connected with screw 71 on the spool fixed mount 52.Bridge 23 1 ends are welded in the aperture 70 of spool fixed mount 52, bridge 23 other ends are connected with floating ball component 8, bridge cap 60 is inserted in the U-lag of bridges 23, bearing pin 25 passes the bearing pin through hole 61 on through hole 53 and the bridge cap 60 on the bridge 23 successively, fixes with cottor pin.Floating ball component 8 comprises ball float 57, internal thread ball seat 58 and floating ball lever 59, ball float 57 bottom welding internal thread ball seats 58, one end of floating ball lever 59 is threaded with internal thread ball seat 58, and its other end bridge cap 60 is deltiod, and the effect of deltiod is: be convenient to be connected with bridge 23.Bridge cap 60 is provided with bearing pin through hole 61.Ball float 57 is welded by two semi-round balls, welds rear and 58 welding of internal thread ball seat.U-shaped position-limited rack 51 is symmetrically welded at valve seat orifice 55 left and right sides on the control frame 42, and left cantilever 72, right cantilever 73 are symmetrically welded at respectively the control left and right sides, frame 42 top.Bearing pin 45 passes the hole 56 of left cantilever 72, two symmetrical holes 68 on the spool fixed mount, the hole 56 on the right cantilever 73 successively, and cottor pin 46 is fixing.

Operating principle of the present utility model is such: after natural gas is installed on the pipeline with vertical installation sealing pair zero leakage drain valve, such as Figure 17,18,19,20,21 signal is started working automatically: air or incondensable gas and the natural gas in the pipeline at first, water, condensate and mixtures of impurities enter drain valve in the lump by flange I27, air or incondensable gas and natural gas separate automatically with water and impurity, air or incondensable gas and natural gas flow into house steward by isostatic pressing blue 29, water, condensate and impurity begin to assemble (seeing accompanying drawing 18) in drain valve, large water gaging subsequently, condensate and impurity flow into rapidly the drain valve inner chamber, when liquid level rises to certain altitude, ball float 57 is by buoyancy rising (seeing accompanying drawing 19), work as water, after condensate and impurity are drained by flange V20, ball float 57 falls, at this moment leverage band movable valve plug 48 and steel ball 47 automatic capturings accurately fall, and at this moment the oral area taper outage 54 at valve seat 44 centers is closed (seeing accompanying drawing 20).Natural gas, water, condensate and mixtures of impurities continue to enter the drain valve inner chamber from flange I27 in a large number, when liquid level rises to certain altitude, ball float 57 rises by buoyancy, and the oral area taper outage 54 at valve seat 44 centers is opened, and enters new circulation automatic operation (seeing accompanying drawing 21).

In sum: the utility model adopts the vertical installation sealing pair control system of original creation that whole drain valve controlled, fracturing sand, rubber grain etc. can not be bonded on the sealing surface, avoid the impurity such as fracturing sand, rubber grain that the spool valve seat of drain valve is resulted in blockage, thereby caused the drain valve not arrange the phenomenons such as liquid or natural gas leaking.Guaranteed the performance requirement of natural gas steam trap zero leakage.The utility model adopts the split design, when spool weares and teares the replacing of appearance needs normally, drain valve only need to be opened several stove bolts, valve core taking is changed just, and changing easily simply, a general people just can change in tens minutes, has greatly alleviated workman's labour intensity, common gas production workman can both finish, and does not need the professional technique workman.Volume is little, is easy to maintaining.

Claims

1. a natural gas is with sealing pair zero leakage drain valve vertically is installed, comprise bonnet assemblies, valve component and control system assembly, the valve gap in the bonnet assemblies (1) is formed by end socket (31), body (34) and upper flange (35) butt welding; Valve body in the valve component (24) is formed by lower flange (36), body (38) and base (39) butt welding, it is characterized in that:

Between a, upper flange (35) and the lower flange (36) wound form sealing mat I (12) is housed, is connected by studs I (14), I type hex nut I (13) is fixing; Ball float guide-localization cover (9) is housed on the wound form sealing mat I (12), is connected by hexagon-headed bolt (10), I type hex nut II (11) is fixing;

End socket in b, the bonnet assemblies (31) crown center is welded with suspension ring (28), and suspension ring (28) right side is welded with equal aluminium hydraulic pressed connecting pipe (32), all other end of aluminium hydraulic pressed connecting pipe (32) and isostatic pressing blue (29) welding; The left side of the body in the bonnet assemblies (34) is welded with inlet connection (30), and the other end of inlet connection (30) is welded with flange I (27); Body (34) right side is welded with screen pack inlet connection (33), and the other end of screen pack inlet connection (33) is welded with flange II (3); Screen pack (2) is packed in flange II (3) hole, one end of screen pack (2) internal diameter is inserted in inlet connection (33), the other end of inlet connection (33) is located with blind plate (7), between blind plate (7) and the flange II (3) wound form sealing mat II (4) is housed, is connected and fixed by studs II (6) and 1 type hex nut III (5);

Lower tube body in c, the valve component (38) right side is welded with discharge connection (37), and the other end of discharge connection (37) is welded with flange III (15); In control frame adpting flange (64) two holes of left end face (66) wound form sealing mat IV (18) is housed, with four hexagon socket cap head screws control system assembly (19) is vertically installed and is fastened on the control frame adpting flange (64); Between flange III (15) and the control frame adpting flange (64) wound form sealing mat III (16) is housed, fastening with studs III (21) and hex nut (22); Lower tube body (38) rear is welded with blowdown connection (41), and the other end of blowdown connection (41) is welded with flange IV (26); All weld three footing (40) in base (39) bottom;

Control frame (42) in d, the control system assembly (19) is provided with valve seat orifice (55), valve seat (44) is housed in the hole, sealing ring I (43) is housed on the valve seat (44), employing is threaded, valve seat (44) center is provided with outage (54), and the aperture of outage (54) is taper; Spool fixed mount (52) center is provided with step through-hole (69), spool (48) is housed in the step through-hole (69), baffle plate (50) is housed on the hole end surface, passes baffle plate (50) by hexagon-headed bolt II (49) and be fixedly connected with screw (71) on the spool fixed mount (52); Bridge (23) one ends are welded in the aperture (70) of spool fixed mount (52), and bridge (23) other end is connected by bearing pin (25) with floating ball component (8); U-shaped position-limited rack (51) is symmetrically welded at valve seat orifice (55) left and right sides on the control frame (42), and left cantilever (72), right cantilever (73) are symmetrically welded at respectively control frame (42) left and right sides, top; Bearing pin (45) passes left cantilever (72), spool fixed mount (52), right cantilever (73) successively, and cottor pin (46) is fixing.

2. a kind of natural gas according to claim 1 is with sealing pair zero leakage drain valve vertically is installed, it is characterized in that: spool fixed mount (52) center is provided with step through-hole (69), be provided with step screw (71) around the hole, spool fixed mount (52) is rectangle, one end is the U-shaped shape, the other end is circular, is arranged with respectively connecting hole (68) on the U-shaped shape, is provided with aperture (70) at round nose.

3. a kind of natural gas according to claim 1 is characterized in that: the uniform elliptical hole of wound form sealing mat I (12) inner ring (63) with sealing pair zero leakage drain valve vertically is installed.

4. a kind of natural gas according to claim 1 is with sealing pair zero leakage drain valve vertically is installed, it is characterized in that: floating ball component (8) comprises ball float (57), internal thread ball seat (58) and floating ball lever (59), ball float (57) bottom welding internal thread ball seat (58), one end of floating ball lever (59) is threaded with internal thread ball seat (58), its other end bridge cap (60) is deltiod, and bridge cap (60) is provided with bearing pin through hole (61).

5. a kind of natural gas according to claim 1 is characterized in that with sealing pair zero leakage drain valve vertically is installed: reducing adpting flange assembly (17) takes over (65) by control frame adpting flange (64), reducing and flange V (20) assembly welding forms; Be provided with through hole in the reducing adpting flange assembly (17).

6. a kind of natural gas according to claim 1 is with sealing pair zero leakage drain valve vertically is installed, it is characterized in that: the head of spool (48) is for spherical, the afterbody of spool (48) is provided with blind hole, is bumped into outage (54) the aperture taper fit sealing on steel ball (47) and the valve seat (44) in the blind hole.