CN102704889B - Pilot-operated type solenoid valve for gas well wellhead and valve plug lifting mechanism - Google Patents
Pilot-operated type solenoid valve for gas well wellhead and valve plug lifting mechanism Download PDFInfo
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- CN102704889B CN102704889B CN201210213395.4A CN201210213395A CN102704889B CN 102704889 B CN102704889 B CN 102704889B CN 201210213395 A CN201210213395 A CN 201210213395A CN 102704889 B CN102704889 B CN 102704889B
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Abstract
The invention discloses a lifting mechanism for a valve plug of a solenoid valve. The lifting mechanism comprises a supporting plate arranged above a valve cap, wherein the upper end of a lifting rod of a main valve plug penetrates through the supporting plate; a rack extending along the length direction of the lifting rod is arranged on the lifting rod; a connector I is arranged on the upper surface of the supporting plate; a transmission shaft is rotatably arranged on the connector I; a gear which is engaged with the rack is arranged on one end of the transmission shaft; a ratchet wheel is arranged on the other end of the transmission shaft; the lifting rod is vertically arranged on the upper surface of the supporting plate; a long lever which is horizontally distributed is rotatably connected on the upper end of the supporting rod; the connection point of the supporting rod and the long lever deviates from the centre in the length direction of the long lever; the long lever is arranged above the ratchet wheel; and a pawl which is matched with the ratchet wheel is fixedly arranged on the long lever. The invention further discloses a pilot-operated type solenoid valve for a gas well wellhead adopting the valve plug lifting mechanism. The pilot-operated type solenoid valve for the gas well wellhead and the valve plug lifting mechanism can greatly increase the opening height of the solenoid valve main valve plug, increases the yield and prevents throttling.
Description
Technical field
The present invention relates to a kind of guide electromagnetic valve and spool hoisting mechanism, particularly relate to a kind of gas well mouth guide electromagnetic valve and spool hoisting mechanism.
Background technology
At present, electromagnetic valve is widely used in gas well mouth as safety cut-off valve.But the spool Lift of traditional electromagnetic valve is limited, often occurs Choking phenomenon, has affected the output efficiency of gas well.Or improve the Lift of electromagnetic valve main valve plug by emptying mode, so both polluted environment, cause again potential safety hazard.In addition, when the source of the gas of gas well output is because pressure oscillation is when excessive, when as excessive in bleed pressure, the excessive source of the gas of pressure easily produces and damages electromagnetic valve, and when bleed pressure is too small while needing shut electromagnetic valve, traditional stop valve cannot cut out in time according to the pressure of source of the gas again, and install and do not put in place in new well number biography, under the condition that teletransmission control is malfunctioning, electrical source of power is not enough, cannot play the effect of emergency cut-off, thereby greatly limit the scope of application of electromagnetic valve.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, a kind of gas well mouth guide electromagnetic valve and spool hoisting mechanism are provided.This gas well mouth can increase the Lift of electromagnetic valve main valve plug with guide electromagnetic valve and spool hoisting mechanism, increased output, prevents throttling.
For achieving the above object, the technical solution used in the present invention is: a kind of valve core of the electromagnetic valve hoisting mechanism, it is characterized in that: comprise the base plate that is horizontally set on electromagnetic valve valve gap top, the upper end of the lifting arm of electromagnetic valve main valve plug passes base plate, on described lifting arm, be provided with the tooth bar extending along lifting arm length direction, the upper surface of described base plate is provided with connector one, on described connector one, be rotatablely equipped with power transmission shaft, one end of described power transmission shaft is provided with the gear being meshed with tooth bar, the other end of described power transmission shaft is provided with ratchet, the upper surface of described base plate is vertically provided with cramp bar, the upper end of described cramp bar is rotatably connected to long lever, the tie point of described cramp bar and long lever departs from the center of long lever length direction, described long lever is positioned at the top of ratchet, on described long lever, be installed with the ratchet matching with ratchet.
Above-mentioned a kind of valve core of the electromagnetic valve hoisting mechanism, it is characterized in that: comprise the mechanical super pressure control device being arranged on electromagnetic valve valve gap, described mechanical super pressure control device comprises crust of the device one and is arranged on the piston rod one in crust of the device one, on described piston rod one, pressure spring one is installed, described crust of the device one is arranged on the valve gap of electromagnetic valve, the inside of described crust of the device one is connected with the main valve plug epicoele of electromagnetic valve, described base plate level is arranged on the outer wall on crust of the device one top, one end of described long lever is connected with the upper end of piston rod one, the upper end extending apparatus shell one of described piston rod one, distance between described cramp bar and long lever and piston rod one tie point is greater than 1/2nd of long lever length.
Above-mentioned a kind of valve core of the electromagnetic valve hoisting mechanism, it is characterized in that: comprise mechanical under-voltage control device, described machinery is under-voltage, and control device comprises crust of the device two and is arranged on the piston rod two in crust of the device two, on described piston rod two, pressure spring two is installed, the other end of described long lever is connected with the upper end of piston rod two, the upper end extending apparatus shell two of described piston rod two, described crust of the device two is arranged on electromagnetic valve valve gap, the inside of described crust of the device two is connected with the main valve plug epicoele of electromagnetic valve, described ratchet is between cramp bar and mechanical super pressure control device.
Above-mentioned a kind of valve core of the electromagnetic valve hoisting mechanism, it is characterized in that: on described base plate and be positioned at long lever one side relevant valve Electrical heads is set, between described long lever and pass valve Electrical heads, be provided with bearing support, on described bearing support, be rotatablely equipped with short lever, one end of described short lever with close valve Electrical heads on the upper end of moving iron core one be connected, the other end of described short lever is near mechanical super pressure control device and be positioned at the below of long lever.
Above-mentioned a kind of valve core of the electromagnetic valve hoisting mechanism, it is characterized in that: the bottom of described piston rod one is provided with boss one, top in described crust of the device one is provided with the sleeve one passing for piston rod one, described pressure spring one is arranged between boss one and sleeve one, the upper end of described pressure spring one is connected to the lower surface of sleeve one, and the lower end of described pressure spring one is connected to the upper surface of boss one.
Above-mentioned a kind of valve core of the electromagnetic valve hoisting mechanism, it is characterized in that: the bottom of described piston rod two is provided with boss two, top in described crust of the device two is provided with the sleeve two passing for piston rod two, described pressure spring two is arranged between boss two and sleeve two, the upper end of described pressure spring two is connected to the lower surface of sleeve two, and the lower end of described pressure spring two is connected to the upper surface of boss two.
Above-mentioned a kind of valve core of the electromagnetic valve hoisting mechanism, it is characterized in that: the below of described base plate is provided with supporting base, the lower end of described supporting base is arranged on described valve gap, and the upper end of described supporting base is arranged on base plate, offers the vertical through hole passing for lifting arm in described supporting base.
Above-mentioned a kind of valve core of the electromagnetic valve hoisting mechanism, is characterized in that: the lower surface of inwall, outer wall and the crust of the device one of described crust of the device one bottom is provided with sealing ring one; The lower surface of inwall, outer wall and the crust of the device two of described crust of the device two bottoms is provided with sealing ring two.
The present invention also provides a kind of gas well mouth guide electromagnetic valve, comprise valve body and the valve gap that is arranged on valve body top, in described valve body, be provided with inlet channel and outlet passageway, in described valve gap, be provided with main valve plug, in described main valve plug, be provided with main spring, between described main valve plug top and valve gap, form main valve plug epicoele, between described main valve plug bottom and valve body, form main valve plug cavity of resorption, it is characterized in that: comprise the spool hoisting mechanism described in any one claim in claim 1-8, and the mechanical super pressure control device in spool hoisting mechanism is positioned at the top of outlet passageway.
Above-mentioned a kind of gas well mouth guide electromagnetic valve, it is characterized in that: on described valve gap, be provided with the balance pipe for being communicated with inlet channel and main valve plug epicoele, one side of described valve gap is provided with out valve Electrical heads, the described valve Electrical heads of opening is connected with the sidewall of valve gap by connector two, described top of opening valve Electrical heads and be arranged on connector two, on described connector two and be positioned at connector two and be provided with endless belt one with the junction of valve gap sidewall, on described connector two and be positioned at connector two and be provided with endless belt two with the junction of opening valve Electrical heads, on described valve gap, be vertically provided with the unloading hole A section being communicated with outlet passageway, in described valve gap, be horizontally disposed with unloading hole B section, in described connector two, be provided with unloading hole C section and unloading hole D section, one end of described unloading hole B section is communicated with the upper end of unloading hole A section, the other end of described unloading hole B section is communicated with one end of unloading hole C section, the other end of described unloading hole C section is communicated with endless belt two, one end of described unloading hole D section is communicated with endless belt two, the other end of described unloading hole D section is communicated with endless belt one, on described valve gap, be horizontally disposed with and be useful on the unloading hole E section that is communicated with endless belt one and main valve plug epicoele, the lower end of the described moving iron core two of opening valve Electrical heads is provided with the sealing mat for seal band two, the described valve Electrical heads of opening is connected with connector two by fittings body, the lower end of described moving iron core two connects through fittings body and endless belt two.
The present invention compared with prior art has the following advantages:
1, of the present invention simple in structure, rationally novel in design, be easy to install.
2, the present invention is by arranging tooth bar, gear, long lever and ratchet and pawl arrangement, drive lifting arm upwards and then drive rack and pinion to coordinate by intracavity gas under main valve plug, can make the main valve plug of electromagnetic valve promote Lift under not emptying condition increases greatly, and by ratchet and pawl arrangement, main valve plug Lift is kept, used more convenient, and long service life.
3, the present invention is by arranging mechanical super pressure control device; when electromagnetic valve upstream line pressure is higher than when setting value; in order to protect in downstream pressure pipeline and not cause security incident; now can realize closing electromagnetic valve by mechanical super pressure control device; machinery super pressure control device simple in structure; respond sensitively, functional reliability is high.
4, the present invention is by arranging mechanical under-voltage control device; when line pressure is lower than when setting value; in order to protect source of the gas and not cause environment pollution and security incident; now can realize closing electromagnetic valve by the under-voltage control device of machinery; machinery under-voltage control device simple in structure; respond sensitively, functional reliability is high.
5, the present invention, at gas well mouth with spool hoisting mechanism is installed on guide electromagnetic valve, makes the Lift after its main valve plug is opened large, and flow area is large, the pressure loss minimum that working media is caused; While closing, can respond fast, in the extremely short time, close, cut off the gas of crossing of upstream and downstream pipeline, and close tightly without any leakage, improve greatly the job stability of electromagnetic valve.
6, of the present invention to realize cost low, and result of use is good, is convenient to promote the use of.
In sum, the present invention is simple in structure, rationally novel in design, functional reliability is high, long service life, and this gas well mouth increases mechanical super, under-voltage control device with guide electromagnetic valve and spool hoisting mechanism, pass to install at new well number and do not put in place, under the condition that teletransmission control is malfunctioning, electrical source of power is not enough, can play the effect of emergency cut-off, thereby work safely and effectively.This gas well mouth effectively coordinates by rack-and-pinion, ratchet and pawl arrangement with guide electromagnetic valve and spool hoisting mechanism, ensure to increase the Lift of electromagnetic valve main valve plug under not emptying prerequisite, increase output, prevent throttling, and in the time that bleed pressure is too high or too low, shut electromagnetic valve cuts off source of the gas in time, ensure not throttling, frozen block not simultaneously, ensure on-the-spot normal production, its result of use is good, is convenient to promote the use of.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is the front view of spool hoisting mechanism of the present invention.
Fig. 2 is the top view of spool hoisting mechanism of the present invention.
Fig. 3 is the annexation schematic diagram of power transmission shaft of the present invention and gear and ratchet.
Fig. 4 is the front view of gas well mouth of the present invention guide electromagnetic valve.
Fig. 5 is the left view of gas well mouth of the present invention guide electromagnetic valve.
Fig. 6 is the enlarged drawing at A place in Fig. 5.
Fig. 7 is the enlarged drawing at B place in Fig. 5.
Fig. 8 is the annexation schematic diagram of unloading hole B section of the present invention and unloading hole A section.
Fig. 9 is the structural representation of the manual valve-opening mechanism of the present invention.
Description of reference numerals:
1-guard shield; 2-mechanical super pressure control device; 2-1-crust of the device one;
2-2-piston rod one; 2-3-pressure spring one; 2-4-boss one;
2-5-sleeve one; 2-6-connecting rod one; 3-base plate;
4-lifting arm; 5-tooth bar; 6-ratchet;
7-cramp bar; 8-long lever; 9-ratchet;
10-mechanical under-voltage control device; 10-1-crust of the device two; 10-2-piston rod two;
10-3-pressure spring two; 10-4-boss two; 10-5-sleeve two;
10-6-connecting rod two; 11-connector one; 12-gear;
13-power transmission shaft; 14-pass valve Electrical heads; 14-1-moving iron core one;
15-short lever; 16-bearing support; 17-supporting base;
18-sealing ring one; 19-sealing ring two; 20-valve body;
21-valve gap; 21-1-interface channel one; 21-2-interface channel two;
22-inlet channel; 23-outlet passageway; 24-main valve plug;
25-main spring; 26-main valve plug epicoele; 27-main valve plug cavity of resorption;
28-open valve Electrical heads; 28-1-moving iron core two; 28-2-sealing mat;
29-connector two; 30-unloading hole A section; 31-unloading hole B section;
32-unloading hole C section; 33-unloading hole D section; 34-unloading hole E section;
35-endless belt one; 36-endless belt two; 37-balance pipe;
38-fittings body; 39-manually valve-opening mechanism; 39-1-mechanism shell;
39-2-nut; 39-3-eccentric shaft; 39-4-end cap;
39-5-eccentric shifting block; 40-hand hoisting assembly; 40-1-lifting handwheel;
40-2-screw mandrel.
Detailed description of the invention
As Fig. 1, a kind of valve core of the electromagnetic valve hoisting mechanism shown in Fig. 2 and Fig. 3, comprise the base plate 3 that is horizontally set on electromagnetic valve valve gap 21 tops, the upper end of the lifting arm 4 of electromagnetic valve main valve plug 24 passes base plate 3, on described lifting arm 4, be provided with the tooth bar 5 extending along lifting arm 4 length directions, the upper surface of described base plate 3 is provided with connector 1, on described connector 1, be rotatablely equipped with the power transmission shaft 13 perpendicular with lifting arm 4, one end of described power transmission shaft 13 is provided with the gear 12 being meshed with tooth bar 5, the other end of described power transmission shaft 13 is provided with ratchet 6, the upper surface of described base plate 3 is vertically provided with cramp bar 7, the upper end of described cramp bar 7 is rotatably connected to long lever 8, the center that the tie point of described cramp bar 7 and long lever 8 departs from long lever 8 length directions, described long lever 8 is positioned at the top of ratchet 6, on described long lever 8, be installed with the ratchet 9 matching with ratchet 6.
As shown in Figure 4 and Figure 5, in the present embodiment, apply after the electromagnetic valve unlatching of this spool hoisting mechanism, lifting arm 4 moves upward gradually along with the pressure in main valve plug epicoele 26 increases, described lifting arm 4 is in the process rising, tooth bar 5 driven gears 12 on lifting arm 4 rotate, gear 12 drives ratchet 6 to rotate by power transmission shaft 13 in rotating, concrete, gear 12 and ratchet 6 are and clockwise rotate, in the time that lifting arm 4 stops rising, ratchet 9 matches with ratchet 6, thereby described ratchet 9 has stoped rotating backward of ratchet 6, having limited ratchet 6 rotates counterclockwise, so, lifting arm 4 is locked in to certain altitude, this spool hoisting mechanism can promote the Lift of electromagnetic valve main valve plug 24 under not emptying condition, increase output, prevent throttling, thereby make can not exert an influence to the stability of the main valve plug of electromagnetic valve 24 in the fluctuation of working medium pressure and flow.
As Fig. 1, shown in Fig. 2 and Fig. 4, this valve core of the electromagnetic valve hoisting mechanism also comprises the mechanical super pressure control device 2 being arranged on electromagnetic valve valve gap 21, described mechanical super pressure control device 2 comprises crust of the device one 2-1 and is arranged on piston rod one 2-2 in crust of the device one 2-1, on described piston rod one 2-2, pressure spring one 2-3 is installed, described crust of the device one 2-1 is arranged on the valve gap 21 of electromagnetic valve, the inside of described crust of the device one 2-1 is connected with the main valve plug epicoele 26 of electromagnetic valve, concrete, the inside of described crust of the device one 2-1 is connected with main valve plug epicoele 26 by interface channel one 21-1, described base plate 3 levels are arranged on the outer wall on crust of the device one 2-1 top, one end of described long lever 8 is connected with the upper end of piston rod one 2-2, concrete, one end of described long lever 8 is by the upper end of connecting rod one 2-6 and piston rod one 2-2, upper end extending apparatus shell one 2-1 of described piston rod one 2-2, distance between described cramp bar 7 and long lever 8 and piston rod one 2-2 tie point is greater than 1/2nd of long lever 8 length.Preferred way is that described ratchet 9 is structure as a whole with long lever 8.
When use, when electromagnetic valve upstream line pressure is higher than setting value when (as 4.5MPa), in order to protect in downstream pressure pipeline and not cause security incident, now can realize closing electromagnetic valve by mechanical super pressure control device 2, this machinery super pressure control device 2 is a piston type mechanism, because the inside of described crust of the device one 2-1 and the main valve plug epicoele 26 of electromagnetic valve are connected, in manufacturing process, piston rod one 2-2 is subject to the pressure-acting of upstream to be tending towards all the time upwards moving, in the time that pressure reaches settings, piston rod one 2-2 overcomes the active force of pressure spring one 2-3 and the effect of frictional force moves upward rapidly, the upper end of piston rod one 2-2 applies active force in one end of long lever 8, described long lever 8 rotates around the tie point of itself and cramp bar 7, thereby long lever 8 deflects, and then ratchet 6 and ratchet 9 are departed from, now, ratchet 6 and gear 12 reverse, lifting arm 4 moves downward, the gravity of main spring 25 effect downwards and main valve plug 24 forces main valve plug 24 to move downward quick overcome friction, thereby main valve plug 24 is closed., in the time that the pressure of upstream source of the gas does not reach the highest design load, under the effect of the upstream source of the gas that main valve plug 24 constantly increases at pressure, can constantly open meanwhile, further strengthened hoisting depth, prevent throttling, improved output efficiency.
As Fig. 1, shown in Fig. 2 and Fig. 4, this valve core of the electromagnetic valve hoisting mechanism also comprises mechanical under-voltage control device 10, described machinery is under-voltage, and control device 10 comprises crust of the device two 10-1 and is arranged on piston rod two 10-2 in crust of the device two 10-1, on described piston rod two 10-2, pressure spring two 10-3 are installed, the other end of described long lever 8 is connected with the upper end of piston rod two 10-2, concrete, one end of described long lever 8 is by the upper end of connecting rod two 10-6 and piston rod two 10-2, upper end extending apparatus shell two 10-1 of described piston rod two 10-2, described crust of the device two 10-1 are arranged on electromagnetic valve valve gap 21, the inside of described crust of the device two 10-1 is connected with the main valve plug epicoele 26 of electromagnetic valve, concrete, the inside of described crust of the device two 10-1 is connected with main valve plug epicoele 26 by interface channel two 21-2, described ratchet 6 is between cramp bar 7 and mechanical super pressure control device 2.
When line pressure when (as 0.5MPa), in order to protect source of the gas and not cause environment pollution and security incident, now can be realized closing electromagnetic valve by the under-voltage control device 10 of machinery lower than setting value.This machinery is under-voltage, and control device 10 is a piston type mechanism, carry out the action of control piston bar two 10-2 by collection tube linear pressure, pressure spring two 10-3 force piston rod two 10-2 to move overcoming action of gas source downwards in piston rod two 10-2 power and frictional force upwards, in the process of piston rod two 10-2 action downwards, piston rod two 10-2 move the other end that pulls long lever 8 downwards, described long lever 8 rotates around the tie point of itself and cramp bar 7, thereby long lever 8 deflects, and then reach the object that ratchet 9 and ratchet 6 depart from, after ratchet 6 and ratchet 9 depart from, lifting arm 4 moves downward, the gravity of main spring 25 effect downwards and main valve plug 24 forces main valve plug 24 to move downward quick overcome friction, thereby main valve plug 24 is closed.
As shown in Figure 2, on described base plate 3 and be positioned at long lever 8 one sides relevant valve Electrical heads 14 is set, between described long lever 8 and pass valve Electrical heads 14, be provided with bearing support 16, on described bearing support 16, be rotatablely equipped with short lever 15, one end of described short lever 15 with close valve Electrical heads 14 on the upper end of moving iron core one 14-1 be connected, the other end of described short lever 15 is near mechanical super pressure control device 2 and be positioned at the below of long lever 8.
When use, close the 14 moment energising of valve Electrical heads, moving iron core one 14-1 moves downward, provoking the unsettled other end of short lever 15 upward deflects, short lever 15 upwards pushes up long lever 8 in deflection, because ratchet 9 and long lever 8 are structure as a whole, thereby long lever 8 moves upward suitable ratchet 9 is departed from ratchet 6, the gravity of now main spring 25 effect downwards and main valve plug 24 forces main valve plug 24 to move downward quick overcome friction, until cut off upstream and downstream pipeline source of the gas completely, sealing completely.
In the present embodiment, described base plate 3, connector 1, gear 12, ratchet 6, mechanical super pressure control device 2 and mechanical under-voltage control device 10 are all positioned at guard shield 1.This gas well mouth increases the under-voltage control device 10 of tool and mechanical under-voltage control device 2 with guide electromagnetic valve and spool hoisting mechanism, pass to install at new well number and do not put in place, under the condition that teletransmission control is malfunctioning, electrical source of power is not enough, can play the effect of emergency cut-off, thereby work safely and effectively.This valve core of the electromagnetic valve hoisting mechanism effectively coordinates by rack-and-pinion, ratchet and pawl arrangement, ensure to increase the Lift of electromagnetic valve main valve plug under not emptying prerequisite, increase output, prevent throttling, and in the time that bleed pressure is too high or too low, shut electromagnetic valve cuts off source of the gas in time, ensure not throttling, frozen block not simultaneously, ensure on-the-spot normal production, its result of use is good, is convenient to promote the use of.
As shown in Figure 1, the bottom of described piston rod one 2-2 is provided with boss one 2-4, top in described crust of the device one 2-1 is provided with sleeve one 2-5 passing for piston rod one 2-2, described pressure spring one 2-3 is arranged between boss one 2-4 and sleeve one 2-5, the upper end of described pressure spring one 2-3 is connected to the lower surface of sleeve one 2-5, and the lower end of described pressure spring one 2-3 is connected to the upper surface of boss one 2-4.The bottom of described piston rod two 10-2 is provided with boss two 10-4, top in described crust of the device two 10-1 is provided with sleeve two 10-5 that pass for piston rod two 10-2, described pressure spring two 10-3 are arranged between boss two 10-4 and sleeve two 10-5, the upper end of described pressure spring two 10-3 is connected to the lower surface of sleeve two 10-5, and the lower end of described pressure spring two 10-3 is connected to the upper surface of boss two 10-4.By being set, pressure spring one 2-3 can adjust the high pressure setting value of mechanical super pressure control device 2, can adjust the low pressure setting value of mechanical super pressure control device 2 by pressure spring two 10-3 are set, make this spool hoisting mechanism can be applicable to different operating modes.
As shown in Figure 1, the below of described base plate 3 is provided with supporting base 17, and the lower end of described supporting base 17 is arranged on described valve gap 21, and the upper end of described supporting base 17 is arranged on base plate 3, offers the vertical through hole passing for lifting arm 4 in described supporting base 17.
As shown in Figure 1, the lower surface of the inwall of described crust of the device one 2-1 bottom, outer wall and crust of the device one 2-1 is provided with sealing ring 1; The lower surface of inwall, outer wall and crust of the device two 10-1 of described crust of the device two 10-1 bottoms is provided with sealing ring 2 19.By sealing ring 1 is set, can assurance device shell one 2-1 and the junction of valve gap 21 do not reveal gas, by sealing ring 2 19 is set, can assurance device shell two 10-1 and the junction of valve gap 21 do not reveal gas, ensured the sensitivity that the functional reliability of mechanical super pressure control device 2 and mechanical under-voltage control device 10 and mechanical super pressure control device 2 and mechanical under-voltage control device 10 move.
A kind of gas well mouth guide electromagnetic valve as shown in Figure 4 and Figure 5, comprise valve body 20 and the valve gap 21 that is arranged on valve body 20 tops, in described valve body 20, be provided with inlet channel 22 and outlet passageway 23, in described valve gap 21, be provided with main valve plug 24, in described main valve plug 24, be provided with main spring 25, between described main valve plug 24 tops and valve gap 21, form main valve plug epicoele 26, between described main valve plug 24 bottoms and valve body 20, form main valve plug cavity of resorption 27, comprise the spool hoisting mechanism described in claim 1-6 any one, described mechanical super pressure control device 2 is positioned at the top of outlet passageway 23, the under-voltage control device 10 of machinery is positioned at the top of inlet channel 22.This is provided with the gas well mouth guide electromagnetic valve of spool hoisting mechanism, and the Lift after its unlatching is large, and flow area is large, the pressure loss minimum that working media is caused; While closing, can respond fast, in the extremely short time, close, cut off the gas of crossing of upstream and downstream pipeline, and close tight without any leakage.And improve greatly the job stability of electromagnetic valve.
As shown in Fig. 4-Fig. 8, on described valve gap 21, be provided with the balance pipe 37 for being communicated with inlet channel 22 and main valve plug epicoele 26, one side of described valve gap 21 is provided with out valve Electrical heads 28, the described valve Electrical heads 28 of opening is connected with the sidewall of valve gap 21 by connector 2 29, described top of opening valve Electrical heads 28 and be arranged on connector 2 29, on described connector 2 29 and be positioned at connector 2 29 and be provided with endless belt 1 with the junction of valve gap 21 sidewalls, on described connector 2 29 and be positioned at connector 2 29 and be provided with endless belt 2 36 with the junction of opening valve Electrical heads 28, on described valve gap 21, be vertically provided with the unloading hole A section 30 being communicated with outlet passageway 23, in described valve gap 21, be horizontally disposed with unloading hole B section 31, in described connector 2 29, be provided with unloading hole C section 32 and unloading hole D section 33, one end of described unloading hole B section 31 is communicated with the upper end of unloading hole A section 30, the other end of described unloading hole B section 31 is communicated with one end of unloading hole C section 32, the other end of described unloading hole C section 32 is communicated with endless belt 2 36, one end of described unloading hole D section 33 is communicated with endless belt 2 36, the other end of described unloading hole D section 33 is communicated with endless belt 1, on described valve gap 21, be horizontally disposed with and be useful on the unloading hole E section 34 that is communicated with endless belt 1 and main valve plug epicoele 36, the lower end of described moving iron core two 28-1 that open valve Electrical heads 28 is provided with the sealing mat 28-2 for seal band 2 36, the described valve Electrical heads 28 of opening is connected with connector 2 29 by fittings body 38, the lower end of described moving iron core two 28-1 connects through fittings body 38 and endless belt 2 36.
As Fig. 4, Fig. 5, Fig. 6, shown in Fig. 7 and Fig. 8, when use, open the 28 moment energising of valve Electrical heads, moving iron core two 28-1 move upward under the effect of electromagnetic force, moving iron core two 28-1 lower end sealing mat 28-2 depart from endless belt 2 36 sealings, its sealing function loses immediately, upstream source of the gas enters main valve plug epicoele 26 by inlet channel 22 and balance pipe 37, and then enter endless belt 1 through unloading hole E section 34, next, upstream source of the gas enters unloading hole D section 33 through endless belt 1 again, enter unloading hole C section 32 through unloading hole D section 33 and endless belt 2 36 again, and then enter unloading hole B section 31 through unloading hole C section 32, enter outlet passageway 23 finally by unloading hole A section 30, due to balance pipe 37 and the cause of unloading hole difference in areas, main valve plug epicoele 26 force value will decline moment, main valve plug cavity of resorption 27 is subject to downstream action of gas source power, main valve plug epicoele 26 is subject to upstream source of the gas active force, under the effect of main valve plug epicoele 26 and main valve plug cavity of resorption 27 pressure differentials, overcome spring force and main valve plug 24 gravity of main spring 25, main valve plug epicoele 26 gas loads and the frictional force of thereupon bringing, thereby promoting main valve plug 24 moves upward.Main valve plug 24 is connected with tooth bar 5 by lifting arm 4, in the process of moving at main valve plug 24, tooth bar 5 is synchronously upwards action also, the gear 12 that drive is mated rotates, gear 12 rotates drive with it with dog end 6, in the time that main valve plug 24 reaches the highest Lift, ratchet 6 also forms interlocking state by rotating to fixing position and a ratchet 9, electromagnetic valve is opened completely, and main valve plug 24 Lifts are not stressed and the impact of flowed fluctuation.Open 28 power-off of valve Electrical heads, the sealing mat 28-2 on moving iron core two 28-1 is by endless belt 2 36 shutoff, and each unloading hole is all closed, and the pressure of main valve plug epicoele 26 reverts to upstream pressure subsequently, the suffered action of gas source dynamic balance of main valve plug 24.
As shown in Fig. 5 and Fig. 9, on described fittings body 38, be provided with manual valve-opening mechanism 39 away from a side of guard shield 1, described manual valve-opening mechanism 39 comprises mechanism shell 39-1 and is arranged on the nut 39-2 of mechanism shell 39-1 outside, described mechanism shell 39-1 inside is provided with eccentric shaft 39-3, the end of described mechanism shell 39-1 is provided with end cap 39-4, one end of described eccentric shaft 39-3 is provided with and extend into fittings body 38 inside and the eccentric shifting block 39-5 for driving moving iron core two 28-1 to move upward, the other end of described eccentric shaft 39-3 is provided with the lockhole (not shown) for driving eccentric shaft 39-3 rotation.When unlatching, only manual key need be inserted to lockhole and rotate gently and can make eccentric shaft 39-3 rotate, thereby drive eccentric shifting block 39-5 rotation, eccentric shifting block 39-5 acts on iron core two 28-1, and iron core two 28-1 are moved upward.
As shown in Figure 5, the top of this valve core of the electromagnetic valve hoisting mechanism is provided with the hand hoisting assembly 40 for opens solenoid valve, this hand hoisting assembly 40 mainly comprises lifting handwheel 40-1 and screw mandrel 40-2, when use, promote handwheel 40-1 by rotation, thereby drive screw mandrel 40-2 to rise, when screw mandrel 40-2 rises, drive lifting arm 4 to rise, thereby main valve plug 24 is opened.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification, change and equivalent structure transformation of above embodiment being done according to the technology of the present invention essence, all still belongs in the protection domain of technical solution of the present invention.
Claims (10)
1. a valve core of the electromagnetic valve hoisting mechanism, it is characterized in that: comprise the base plate (3) that is horizontally set on electromagnetic valve valve gap (21) top, the upper end of the lifting arm (4) of electromagnetic valve main valve plug (24) passes base plate (3), on described lifting arm (4), be provided with the tooth bar (5) extending along lifting arm (4) length direction, the upper surface of described base plate (3) is provided with connector one (11), on described connector one (11), be rotatablely equipped with power transmission shaft (13), one end of described power transmission shaft (13) is provided with the gear (12) being meshed with tooth bar (5), the other end of described power transmission shaft (13) is provided with ratchet (6), the upper surface of described base plate (3) is vertically provided with cramp bar (7), the upper end of described cramp bar (7) is rotatably connected to long lever (8), the center that the tie point of described cramp bar (7) and long lever (8) departs from long lever (8) length direction, described long lever (8) is positioned at the top of ratchet (6), on described long lever (8), be installed with the ratchet (9) matching with ratchet (6).
2. a kind of valve core of the electromagnetic valve hoisting mechanism according to claim 1, it is characterized in that: comprise the mechanical super pressure control device (2) being arranged on electromagnetic valve valve gap (21), described mechanical super pressure control device (2) comprises crust of the device one (2-1) and is arranged on the piston rod one (2-2) in crust of the device one (2-1), pressure spring one (2-3) is installed on described piston rod one (2-2), described crust of the device one (2-1) is arranged on the valve gap (21) of electromagnetic valve, the inside of described crust of the device one (2-1) is connected with the main valve plug epicoele (26) of electromagnetic valve, described base plate (3) level is arranged on the outer wall on crust of the device one (2-1) top, one end of described long lever (8) is connected with the upper end of piston rod one (2-2), the upper end extending apparatus shell one (2-1) of described piston rod one (2-2), distance between described cramp bar (7) and long lever (8) and piston rod one (2-2) tie point is greater than 1/2nd of long lever (8) length.
3. a kind of valve core of the electromagnetic valve hoisting mechanism according to claim 2, it is characterized in that: comprise mechanical under-voltage control device (10), described machinery is under-voltage, and control device (10) comprises crust of the device two (10-1) and is arranged on the piston rod two (10-2) in crust of the device two (10-1), pressure spring two (10-3) is installed on described piston rod two (10-2), the other end of described long lever (8) is connected with the upper end of piston rod two (10-2), the upper end extending apparatus shell two (10-1) of described piston rod two (10-2), described crust of the device two (10-1) is arranged on electromagnetic valve valve gap (21), the inside of described crust of the device two (10-1) is connected with the main valve plug epicoele (26) of electromagnetic valve, described ratchet (6) is positioned between cramp bar (7) and mechanical super pressure control device (2).
4. a kind of valve core of the electromagnetic valve hoisting mechanism according to claim 1, it is characterized in that: described base plate (3) is gone up and is positioned at long lever (8) one sides relevant valve Electrical heads (14) is set, between described long lever (8) and pass valve Electrical heads (14), be provided with bearing support (16), on described bearing support (16), be rotatablely equipped with short lever (15), one end of described short lever (15) is connected with the upper end of closing the upper moving iron core one (14-1) of valve Electrical heads (14), the other end of described short lever (15) is near mechanical super pressure control device (2) and be positioned at the below of long lever (8).
5. a kind of valve core of the electromagnetic valve hoisting mechanism according to claim 2, it is characterized in that: the bottom of described piston rod one (2-2) is provided with boss one (2-4), top in described crust of the device one (2-1) is provided with the sleeve one (2-5) passing for piston rod one (2-2), described pressure spring one (2-3) is arranged between boss one (2-4) and sleeve one (2-5), the upper end of described pressure spring one (2-3) is connected to the lower surface of sleeve one (2-5), and the lower end of described pressure spring one (2-3) is connected to the upper surface of boss one (2-4).
6. a kind of valve core of the electromagnetic valve hoisting mechanism according to claim 3, it is characterized in that: the bottom of described piston rod two (10-2) is provided with boss two (10-4), top in described crust of the device two (10-1) is provided with the sleeve two (10-5) passing for piston rod two (10-2), described pressure spring two (10-3) is arranged between boss two (10-4) and sleeve two (10-5), the upper end of described pressure spring two (10-3) is connected to the lower surface of sleeve two (10-5), the lower end of described pressure spring two (10-3) is connected to the upper surface of boss two (10-4).
7. a kind of valve core of the electromagnetic valve hoisting mechanism according to claim 1, it is characterized in that: the below of described base plate (3) is provided with supporting base (17), the lower end of described supporting base (17) is arranged on described valve gap (21), it is upper that the upper end of described supporting base (17) is arranged on base plate (3), offers the vertical through hole passing for lifting arm (4) in described supporting base (17).
8. a kind of valve core of the electromagnetic valve hoisting mechanism according to claim 3, is characterized in that: the lower surface of inwall, outer wall and the crust of the device one (2-1) of described crust of the device one (2-1) bottom is provided with sealing ring one (18); The lower surface of inwall, outer wall and the crust of the device two (10-1) of described crust of the device two (10-1) bottom is provided with sealing ring two (19).
9. a gas well mouth guide electromagnetic valve, comprise valve body (20) and be arranged on the valve gap (21) of valve body (20) top, in described valve body (20), be provided with inlet channel (22) and outlet passageway (23), in described valve gap (21), be provided with main valve plug (24), in described main valve plug (24), be provided with main spring (25), between described main valve plug (24) top and valve gap (21), form main valve plug epicoele (26), between described main valve plug (24) bottom and valve body (20), form main valve plug cavity of resorption (27), it is characterized in that: comprise the spool hoisting mechanism described in any one claim in claim 1-8.
10. a kind of gas well mouth guide electromagnetic valve according to claim 9, it is characterized in that: on described valve gap (21), be provided with the balance pipe (37) for being communicated with inlet channel (22) and main valve plug epicoele (26), one side of described valve gap (21) is provided with out valve Electrical heads (28), the described valve Electrical heads (28) of opening is connected with the sidewall of valve gap (21) by connector two (29), described top of opening valve Electrical heads (28) and be arranged on connector two (29), described connector two (29) is gone up and is positioned at connector two (29) and is provided with endless belt one (35) with the junction of valve gap (21) sidewall, described connector two (29) is gone up and is positioned at connector two (29) and is provided with endless belt two (36) with the junction of opening valve Electrical heads (28), on described valve gap (21), be vertically provided with the unloading hole A section (30) being communicated with outlet passageway (23), in described valve gap (21), be horizontally disposed with unloading hole B section (31), in described connector two (29), be provided with unloading hole C section (32) and unloading hole D section (33), one end of described unloading hole B section (31) is communicated with the upper end of unloading hole A section (30), the other end of described unloading hole B section (31) is communicated with one end of unloading hole C section (32), the other end of described unloading hole C section (32) is communicated with endless belt two (36), one end of described unloading hole D section (33) is communicated with endless belt two (36), the other end of described unloading hole D section (33) is communicated with endless belt one (35), on described valve gap (21), be horizontally disposed with and be useful on the unloading hole E section (34) that is communicated with endless belt one (35) and main valve plug epicoele (36), the lower end of the described moving iron core two (28-1) of opening valve Electrical heads (28) is provided with the sealing mat (28-2) for seal band two (36), the described valve Electrical heads (28) of opening is connected with connector two (29) by fittings body (38), the lower end of described moving iron core two (28-1) connects through fittings body (38) and endless belt two (36).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210213395.4A CN102704889B (en) | 2012-06-24 | 2012-06-24 | Pilot-operated type solenoid valve for gas well wellhead and valve plug lifting mechanism |
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| CN201210213395.4A CN102704889B (en) | 2012-06-24 | 2012-06-24 | Pilot-operated type solenoid valve for gas well wellhead and valve plug lifting mechanism |
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| CN102704889B true CN102704889B (en) | 2014-07-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104695900B (en) * | 2015-03-18 | 2017-09-01 | 中国石油大学(北京) | Intelligently realizing explosion-proof magnetic valve |
| CN104727778B (en) * | 2015-03-18 | 2017-04-12 | 中国石油大学(北京) | Remote high-pressure well opening emergency cut-off device |
| CN106150431B (en) * | 2016-08-10 | 2018-10-26 | 中国石油大学(华东) | The anti-blocking precise controlling regulating valve of coal bed gas well |
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