CN102704889A - 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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- CN102704889A CN102704889A CN2012102133954A CN201210213395A CN102704889A CN 102704889 A CN102704889 A CN 102704889A CN 2012102133954 A CN2012102133954 A CN 2012102133954A CN 201210213395 A CN201210213395 A CN 201210213395A CN 102704889 A CN102704889 A CN 102704889A
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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 with 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, the throttling phenomenon often occurs, has influenced the output efficiency of gas well.Perhaps improve the Lift of electromagnetic valve main valve plug, so both polluted environment, cause potential safety hazard again through the mode of emptying.In addition, when the source of the gas of gas well output because of pressure oscillation when excessive, like bleed pressure when excessive; The excessive source of the gas of pressure produces electromagnetic valve easily and damages, and when the too small needs of bleed pressure were closed electromagnetic valve, traditional stop valve can't in time cut out according to the pressure of source of the gas again; And pass to install at new well number and do not put in place; Under the condition that teletransmission Control Failure, electrical source of power are not enough, can't play the effect of emergency cut-off, thus big limitations the scope of application of electromagnetic valve.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency of the prior art, provide a kind of gas well mouth with guide electromagnetic valve and spool hoisting mechanism.This gas well mouth can increase the Lift of electromagnetic valve main valve plug with guide electromagnetic valve and spool hoisting mechanism, has increased output, prevents throttling.
For realizing above-mentioned purpose; The technical scheme that the present invention adopts is: a kind of valve core of the electromagnetic valve hoisting mechanism 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; Said lifting arm is provided with the tooth bar that extends along the lifting arm length direction; The upper surface of said base plate is provided with connector one, is rotatablely equipped with power transmission shaft on the said connector one, and an end of said power transmission shaft is equipped with the gear that is meshed with tooth bar; The other end of said power transmission shaft is equipped with ratchet; The upper surface of said base plate vertically is provided with cramp bar, and the upper end of said cramp bar is rotatably connected to long lever, and the tie point of said cramp bar and long lever departs from the center of long lever length direction; Said long lever is positioned at the top of ratchet, is installed with the ratchet that matches with ratchet on the said long lever.
Above-mentioned a kind of valve core of the electromagnetic valve hoisting mechanism; It is characterized in that: comprise the mechanical superpressure control device that is arranged on the electromagnetic valve valve gap; Said mechanical superpressure control device comprises crust of the device one and the piston rod one that is installed in the crust of the device one; On the said piston rod one pressure spring one is installed, said crust of the device one is installed on the valve gap of electromagnetic valve, and the inside of said crust of the device one is connected with the main valve plug epicoele of electromagnetic valve; Said base plate level is installed on the outer wall on crust of the device one top; One end of said long lever is connected with the upper end of piston rod one, the upper end extending apparatus shell one of said piston rod one, and the distance between said 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; The under-voltage control device of said machinery comprises crust of the device two and the piston rod two that is installed in the crust of the device two, on the said piston rod two pressure spring two is installed, and the other end of said long lever is connected with the upper end of piston rod two; The upper end extending apparatus shell two of said piston rod two; Said crust of the device two is installed on the electromagnetic valve valve gap, and the inside of said crust of the device two is connected with the main valve plug epicoele of electromagnetic valve, and said ratchet is between cramp bar and mechanical superpressure control device.
Above-mentioned a kind of valve core of the electromagnetic valve hoisting mechanism; It is characterized in that: on the said base plate and be positioned at long lever one side relevant valve Electrical heads is set; Be provided with bearing support between said long lever and the pass valve Electrical heads; Be rotatablely equipped with short lever on the said bearing support, an end of said short lever with close the valve Electrical heads on the upper end of moving iron core one be connected, the other end of said short lever is near mechanical superpressure 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 said piston rod one is provided with boss one; Top in the said crust of the device one is provided with the sleeve one that supplies piston rod one to pass; Said pressure spring one is installed between boss one and the sleeve one, and the upper end of said pressure spring one is connected to the lower surface of sleeve one, and the lower end of said 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 said piston rod two is provided with boss two; Top in the said crust of the device two is provided with the sleeve two that supplies piston rod two to pass; Said pressure spring two is installed between boss two and the sleeve two, and the upper end of said pressure spring two is connected to the lower surface of sleeve two, and the lower end of said 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 said base plate is provided with supporting base; The lower end of said supporting base is installed on the said valve gap, and the upper end of said supporting base is installed on the base plate, offers the vertical through hole that supplies lifting arm to pass in the said 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 said 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 said crust of the device two bottoms is provided with sealing ring two.
The present invention also provides a kind of gas well mouth to use guide electromagnetic valve; Comprise valve body and the valve gap that is arranged on the valve body top; Be provided with inlet channel and outlet passageway in the said valve body, be provided with main valve plug in the said valve gap, be provided with main spring in the said main valve plug; Form the main valve plug epicoele between said main valve plug top and the valve gap; Form the main valve plug cavity of resorption between said main valve plug bottom and the valve body, it is characterized in that: comprise the described spool hoisting mechanism of each claim among the claim 1-8, and the mechanical superpressure control device in the spool hoisting mechanism is positioned at the top of outlet passageway.
Above-mentioned a kind of gas well mouth is used guide electromagnetic valve; It is characterized in that: said valve gap is provided with the balance pipe that is used to be communicated with inlet channel and main valve plug epicoele; One side of said valve gap is provided with out the valve Electrical heads, and the said valve Electrical heads of opening is connected with the sidewall of valve gap through connector two, saidly opens the top that the valve Electrical heads is arranged on connector two; On the said the connector two and junction that is positioned at connector two and valve gap sidewall is provided with endless belt one; On the said connector two and be positioned at connector two and be provided with endless belt two, vertically be provided with the unloading hole A section that is communicated with outlet passageway on the said valve gap, be horizontally disposed with unloading hole B section in the said valve gap with the junction of opening the valve Electrical heads; Be provided with unloading hole C section and unloading hole D section in the said connector two; One end of said unloading hole B section is communicated with the upper end of unloading hole A section, and the other end of said unloading hole B section is communicated with an end of unloading hole C section, and the other end of said unloading hole C section is communicated with endless belt two; One end of said unloading hole D section is communicated with endless belt two; The other end of said unloading hole D section is communicated with endless belt one, is horizontally disposed with on the said valve gap to be useful on the unloading hole E section that is communicated with endless belt one and main valve plug epicoele, and said lower end of opening the moving iron core two of valve Electrical heads is equipped with the sealing mat that is used for seal band two; The said valve Electrical heads of opening is connected with connector two through fittings body, and the lower end of said moving iron core two passes fittings body and endless belt two connects.
The present invention compared with prior art has the following advantages:
1, of the present invention simple in structure, novel and reasonable design is easy to install.
2, the present invention is through being provided with tooth bar, gear, long lever and ratchet and pawl arrangement; Make progress and then the cooperation of drive rack and pinion through gas drive lifting arm in the main valve plug cavity of resorption; Can make the main valve plug of electromagnetic valve under the condition of not emptying, promote Lift increases greatly; And through ratchet and pawl arrangement the main valve plug Lift is kept, it is used more convenient, and long service life.
3, the present invention is through being provided with mechanical superpressure control device; When electromagnetic valve upstream line pressure is higher than setting value; In order to protect in the downstream pressure pipeline and not cause security incident, can realize to the closing of electromagnetic valve mechanical superpressure control device simple in structure this moment through mechanical superpressure control device; Response is sensitive, and functional reliability is high.
4, the present invention is through being provided with mechanical under-voltage control device; When line pressure is lower than setting value; In order to protect source of the gas and not cause environment pollution and security incident, can realize to the closing of electromagnetic valve mechanical under-voltage control device simple in structure this moment through the under-voltage control device of machinery; Response is sensitive, and functional reliability is high.
5, the present invention installs the spool hoisting mechanism at gas well mouth on guide electromagnetic valve, and the Lift after making its main valve plug open is big, and flow area is big, and is minimum to the pressure loss that working media causes; Can respond fast when closing, in the extremely short time, close, cut off the gas of crossing of upstream and downstream pipeline, and close tight no any leakage, improve the job stability of electromagnetic valve greatly.
6, realization cost of the present invention is low, and result of use is good, is convenient to promote the use of.
In sum, the present invention is simple in structure, novel and reasonable design; Functional reliability is high, long service life, and this gas well mouth increases mechanical ultra, under-voltage control device with guide electromagnetic valve and spool hoisting mechanism; Passing installation at new well number does not put in place; Under the condition of teletransmission Control Failure, electrical source of power deficiency, can play the effect of emergency cut-off, thereby work safely and effectively.This gas well mouth effectively cooperates through rack-and-pinion, ratchet and pawl arrangement with guide electromagnetic valve and spool hoisting mechanism, guarantees under the prerequisite of not emptying, to increase the Lift of electromagnetic valve main valve plug, has increased output; Prevent throttling, and when bleed pressure is too high or too low, can in time close the solenoid valve shuts source of the gas; Guarantee not throttling simultaneously, do not freeze stifled; Guarantee on-the-spot ordinary production, its result of use is good, is convenient to promote the use of.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 is the front view of spool hoisting mechanism of the present invention.
Fig. 2 is the vertical view of spool hoisting mechanism of the present invention.
Fig. 3 is the annexation sketch map 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 with guide electromagnetic valve.
Fig. 5 is the left view of gas well mouth of the present invention with guide electromagnetic valve.
Fig. 6 is the enlarged drawing at A place among Fig. 5.
Fig. 7 is the enlarged drawing at B place among Fig. 5.
Fig. 8 is the annexation sketch map 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 superpressure 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;
The 15-short lever; The 16-bearing support; The 17-supporting base;
18-sealing ring one; 19-sealing ring two; 20-valve body;
The 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 the 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 mechanisms; 39-1-mechanism's housing;
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.
The specific embodiment
Like Fig. 1, Fig. 2 and a kind of valve core of the electromagnetic valve hoisting mechanism shown in Figure 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, and said lifting arm 4 is provided with the tooth bar 5 that extends along lifting arm 4 length directions, and the upper surface of said base plate 3 is provided with connector 1; Be rotatablely equipped with the power transmission shaft 13 perpendicular on the said connector 1 with lifting arm 4; One end of said power transmission shaft 13 is equipped with the gear 12 that is meshed with tooth bar 5, and the other end of said power transmission shaft 13 is equipped with ratchet 6, and the upper surface of said base plate 3 vertically is provided with cramp bar 7; The upper end of said cramp bar 7 is rotatably connected to long lever 8; The center that the tie point of said cramp bar 7 and long lever 8 departs from long lever 8 length directions, said long lever 8 is positioned at the top of ratchet 6, is installed with the ratchet 9 that matches with ratchet 6 on the said long lever 8.
Like Fig. 4 and shown in Figure 5, in the present embodiment, after the electromagnetic valve of using this spool hoisting mechanism is opened; Lifting arm 4 moves upward along with the pressure in the main valve plug epicoele 26 increases gradually, and said lifting arm 4 is in the process that rises, and tooth bar 5 driven gears 12 on the lifting arm 4 rotate; Gear 12 drives ratchet 6 through power transmission shaft 13 and rotates when rotating, concrete, and gear 12 is with ratchet 6 and clockwise rotates; When lifting arm 4 stopped to rise, ratchet 9 matched with ratchet 6, thereby said ratchet 9 has stoped the backward rotation of ratchet 6; Promptly limited ratchet 6 and rotated counterclockwise, so, lifting arm 4 is locked in certain altitude; This spool hoisting mechanism can promote the Lift of electromagnetic valve main valve plug 24 under the condition of not emptying; Increased output, prevented throttling, thereby made and can the stability of the main valve plug 24 of electromagnetic valve not exerted an influence in the fluctuation of working medium pressure and flow.
Like Fig. 1, Fig. 2 and shown in Figure 4; This valve core of the electromagnetic valve hoisting mechanism also comprises the mechanical superpressure control device 2 that is arranged on the electromagnetic valve valve gap 21; Said mechanical superpressure control device 2 comprises crust of the device one 2-1 and piston rod one 2-2 that is installed in crust of the device one 2-1; On said piston rod one 2-2 pressure spring one 2-3 is installed, said crust of the device one 2-1 is installed on the valve gap 21 of electromagnetic valve, and the inside of said crust of the device one 2-1 is connected with the main valve plug epicoele 26 of electromagnetic valve; Concrete; The inside of said crust of the device one 2-1 is connected with main valve plug epicoele 26 through interface channel one 21-1, and said base plate 3 levels are installed on the outer wall on crust of the device one 2-1 top, and an end of said long lever 8 is connected with the upper end of piston rod one 2-2; Concrete; One end of said long lever 8 passes through the upper end of connecting rod one 2-6 and piston rod one 2-2, upper end extending apparatus shell one 2-1 of said piston rod one 2-2, and the distance between said cramp bar 7 and long lever 8 and the piston rod one 2-2 tie point is greater than 1/2nd of long lever 8 length.Preferred way is that said ratchet 9 is structure as a whole with long lever 8.
During use, when electromagnetic valve upstream line pressure is higher than setting value (like 4.5MPa), in order to protect in the downstream pressure pipeline and not cause security incident; Can realize that through mechanical superpressure control device 2 this machinery superpressure control device 2 is a piston type mechanism to the closing of electromagnetic valve this moment, because the inside of said crust of the device one 2-1 is connected with the main valve plug epicoele 26 of electromagnetic valve; Piston rod one 2-2 receives the pressure effect at the upper reaches to be tending towards upwards action all the time in the manufacturing process; When pressure reached settings, active force and function of friction that piston rod one 2-2 overcomes pressure spring one 2-3 moved upward rapidly, and the upper end of piston rod one 2-2 applies the end of active force in long lever 8; Said 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 broken away from, at this moment; Ratchet 6 and gear 12 counter-rotatings; Lifting arm 4 moves downward, and 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 makes main valve plug 24 close.Simultaneously, when the pressure of source of the gas did not reach the highest design load at the upper reaches, main valve plug 24 can constantly be opened under the effect of the upper reaches source of the gas that pressure constantly increases, and has further strengthened hoisting depth, prevents throttling, has improved output efficiency.
Like Fig. 1, Fig. 2 and shown in Figure 4; This valve core of the electromagnetic valve hoisting mechanism also comprises mechanical under-voltage control device 10; Said machinery is under-voltage, and control device 10 comprises crust of the device two 10-1 and piston rod two 10-2 that are installed in crust of the device two 10-1, on said piston rod two 10-2 pressure spring two 10-3 is installed, and the other end of said long lever 8 is connected with the upper end of piston rod two 10-2; Concrete; One end of said long lever 8 passes through the upper end of connecting rod two 10-6 and piston rod two 10-2, upper end extending apparatus shell two 10-1 of said piston rod two 10-2, and said crust of the device two 10-1 are installed on the electromagnetic valve valve gap 21; The inside of said crust of the device two 10-1 is connected with the main valve plug epicoele 26 of electromagnetic valve; Concrete, the inside of said crust of the device two 10-1 is connected with main valve plug epicoele 26 through interface channel two 21-2, and said ratchet 6 is between cramp bar 7 and mechanical superpressure control device 2.
When line pressure was lower than setting value (like 0.5MPa), in order to protect source of the gas and not cause environment pollution and security incident, can realize closing electromagnetic valve through the under-voltage control device 10 of machinery this moment.This machinery is under-voltage, and control device 10 is a piston type mechanism; Through the action that the collection tube linear pressure comes control piston bar two 10-2, pressure spring two 10-3 will overcome action of gas source forces piston rod two 10-2 to move downwards in power and the frictional force that piston rod two 10-2 make progress, in the process of piston rod two 10-2 action downwards; Piston rod two 10-2 will spur the other end of long lever 8 and move downwards; Said long lever 8 rotates around the tie point of itself and cramp bar 7, thereby long lever 8 deflects, and then reaches the purpose that ratchet 9 and ratchet 6 break away from; After ratchet 6 and ratchet 9 break away from; Lifting arm 4 moves downward, and 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 makes main valve plug 24 close.
As shown in Figure 2; On the said base plate 3 and be positioned at long lever 8 one sides relevant valve Electrical heads 14 is set; Be provided with bearing support 16 between said long lever 8 and the pass valve Electrical heads 14; Be rotatablely equipped with short lever 15 on the said bearing support 16, an end of said 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 said short lever 15 is near mechanical superpressure control device 2 and be positioned at the below of long lever 8.
During use; Close the 14 moments energising of valve Electrical heads, moving iron core one 14-1 moves downward, and provokes short lever 15 unsettled other ends and upward deflects; Short lever 15 upwards pushes up long lever 8 in deflection; Because ratchet 9 is structure as a whole with long lever 8, thereby long lever 8 moves upward suitable ratchet 9 and ratchet 6 is broken away from, and this moment, the gravity of main spring 25 effects downwards and main valve plug 24 forced main valve plug 24 to move downward quick overcome friction; Up to cutting off upstream and downstream pipeline source of the gas fully, sealing fully.
In the present embodiment, said base plate 3, connector 1, gear 12, ratchet 6, mechanical superpressure control device 2 and mechanical under-voltage control device 10 all are positioned at guard shield 1.This gas well mouth increases under-voltage control device 10 of tool and mechanical under-voltage control device 2 with guide electromagnetic valve and spool hoisting mechanism; Passing installation at new well number does not put in place; Under the condition of teletransmission Control Failure, electrical source of power deficiency, can play the effect of emergency cut-off, thereby work safely and effectively.This valve core of the electromagnetic valve hoisting mechanism effectively cooperates through rack-and-pinion, ratchet and pawl arrangement, guarantees under the prerequisite of not emptying, to increase the Lift of electromagnetic valve main valve plug, has increased output; Prevent throttling, and when bleed pressure is too high or too low, can in time close the solenoid valve shuts source of the gas; Guarantee not throttling simultaneously, do not freeze stifled; Guarantee on-the-spot ordinary production, its result of use is good, is convenient to promote the use of.
As shown in Figure 1; The bottom of said piston rod one 2-2 is provided with boss one 2-4; Top in said crust of the device one 2-1 is provided with sleeve one 2-5 that supplies piston rod one 2-2 to pass; Said pressure spring one 2-3 is installed between boss one 2-4 and sleeve one 2-5, and the upper end of said pressure spring one 2-3 is connected to the lower surface of sleeve one 2-5, and the lower end of said pressure spring one 2-3 is connected to the upper surface of boss one 2-4.The bottom of said piston rod two 10-2 is provided with boss two 10-4; Top in said crust of the device two 10-1 is provided with sleeve two 10-5 that supply piston rod two 10-2 to pass; Said pressure spring two 10-3 are installed between boss two 10-4 and sleeve two 10-5; The upper end of said pressure spring two 10-3 is connected to the lower surface of sleeve two 10-5, and the lower end of said pressure spring two 10-3 is connected to the upper surface of boss two 10-4.Through being set, pressure spring one 2-3 can adjust the high pressure setting value of mechanical superpressure control device 2; Can adjust the low pressure setting value of mechanical superpressure control device 2 through 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 said base plate 3 is provided with supporting base 17, and the lower end of said supporting base 17 is installed on the said valve gap 21, and the upper end of said supporting base 17 is installed on the base plate 3, offers the vertical through hole that supplies lifting arm 4 to pass in the said supporting base 17.
As shown in Figure 1, the lower surface of the inwall of said 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 the inwall of said crust of the device two 10-1 bottoms, outer wall and crust of the device two 10-1 is provided with sealing ring 2 19.Through sealing ring 1 is set; Can assurance device shell one 2-1 and the junction of valve gap 21 do not reveal gas; Through sealing ring 2 19 is set; Can assurance device shell two 10-1 and the junction of valve gap 21 do not reveal gas, guaranteed the functional reliability of mechanical superpressure control device 2 and mechanical under-voltage control device 10 and the sensitivity of mechanical superpressure control device 2 and mechanical under-voltage control device 10 actions.
Use guide electromagnetic valve like Fig. 4 and a kind of gas well mouth shown in Figure 5; Comprise valve body 20 and the valve gap 21 that is arranged on valve body 20 tops, be provided with inlet channel 22 and outlet passageway 23 in the said valve body 20, be provided with main valve plug 24 in the said valve gap 21; Be provided with main spring 25 in the said main valve plug 24; Form main valve plug epicoele 26 between said main valve plug 24 tops and the valve gap 21, form main valve plug cavity of resorption 27 between said main valve plug 24 bottoms and the valve body 20, comprise any described spool hoisting mechanism of claim 1-6; Said mechanical superpressure control device 2 is positioned at the top of outlet passageway 23, and mechanical under-voltage control device 10 is positioned at the top of inlet channel 22.This gas well mouth that spool hoisting mechanism is installed is used guide electromagnetic valve, and the Lift after it is opened is big, and flow area is big, and is minimum to the pressure loss that working media causes; Can respond fast when closing, in the extremely short time, close, cut off the gas of crossing of upstream and downstream pipeline, and close tight no any leakage.And improved the job stability of electromagnetic valve greatly.
Like Fig. 4-shown in Figure 8; Said valve gap 21 is provided with the balance pipe 37 that is used to be communicated with inlet channel 22 and main valve plug epicoele 26; One side of said valve gap 21 is provided with out valve Electrical heads 28; The said valve Electrical heads 28 of opening is connected with the sidewall of valve gap 21 through connector 2 29; Saidly open the top that valve Electrical heads 28 is arranged on connector 2 29, on the said the connector 2 29 and junction that is positioned at connector 2 29 and valve gap 21 sidewalls is provided with endless belt 1, on the said 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; Vertically be provided with the unloading hole A section 30 that is communicated with outlet passageway 23 on the said valve gap 21; Be horizontally disposed with unloading hole B section 31 in the said valve gap 21, be provided with unloading hole C section 32 and unloading hole D section 33 in the said connector 2 29, an end of said unloading hole B section 31 is communicated with the upper end of unloading hole A section 30; The other end of said unloading hole B section 31 is communicated with an end of unloading hole C section 32; The other end of said unloading hole C section 32 is communicated with endless belt 2 36, and an end of said unloading hole D section 33 is communicated with endless belt 2 36, and the other end of said unloading hole D section 33 is communicated with endless belt 1; Be horizontally disposed with on the said valve gap 21 and be useful on the unloading hole E section 34 that is communicated with endless belt 1 and main valve plug epicoele 36; Said lower end of opening moving iron core two 28-1 of valve Electrical heads 28 is equipped with the sealing mat 28-2 that is used for seal band 2 36, and the said valve Electrical heads 28 of opening is connected with connector 2 29 through fittings body 38, and the lower end of said moving iron core two 28-1 is passed fittings body 38 and connected with endless belt 2 36.
Like Fig. 4, Fig. 5, Fig. 6, Fig. 7 and shown in Figure 8, during use, open the 28 moments energising of valve Electrical heads; Moving iron core two 28-1 move upward under the effect of electromagnetic force, and moving iron core two 28-1 lower end sealing mat 28-2 break away from endless belt 2 36 sealings, and its sealing function loses immediately; Upper reaches source of the gas gets into main valve plug epicoele 26 through inlet channel 22 and balance pipe 37, and then gets into endless belt 1 through unloading hole E section 34, next; Upper reaches source of the gas gets into unloading hole D section 33 through endless belt 1 again; Get into unloading hole C section 32 through unloading hole D section 33 and endless belt 2 36 again, and then get into unloading hole B section 31, after unloading hole A section 30 gets into outlet passageway 23 through unloading hole C section 32; Because the cause of balance pipe 37 and unloading hole difference in areas; Main valve plug epicoele 26 force value will descend moment, and main valve plug cavity of resorption 27 receives downstream action of gas source power, and main valve plug epicoele 26 receives upper reaches source of the gas active force; Under main valve plug epicoele 26 and main valve plug cavity of resorption 27 action of pressure, overcome spring force and main valve plug 24 gravity, main valve plug epicoele 26 gas loads of main spring 25 and the frictional force of thereupon bringing, move upward thereby promote main valve plug 24.Main valve plug 24 is connected with tooth bar 5 through lifting arm 4, and in the process of main valve plug 24 actions, tooth bar 5 is upwards action synchronously also; Gear 12 rotations that drive is mated; Gear 12 will drive coaxial with it ratchet 6 rotation, and when main valve plug 24 reaches the highest Lift, ratchet 6 also will rotate to a fixing position and ratchet 9 formation interlocking states; Electromagnetic valve complete opening, main valve plug 24 Lifts are not stressed and the influence of flowed fluctuation.Open 28 outages of valve Electrical heads, the sealing mat 28-2 on moving iron core two 28-1 is with 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, main valve plug 24 suffered action of gas source dynamic balances.
Like Fig. 5 and shown in Figure 9; Side away from guard shield 1 on the said fittings body 38 is provided with manual valve-opening mechanism 39; Said manual valve-opening mechanism 39 comprises the nut 39-2 that the housing 39-1 of mechanism is outside with being arranged on the housing 39-1 of mechanism; Said mechanism housing 39-1 inside is equipped with eccentric shaft 39-3; The end of the said housing 39-1 of mechanism is provided with end cap 39-4, and the end of said eccentric shaft 39-3 is equipped with and extend into fittings body 38 inside and be used to drive the eccentric shifting block 39-5 that moving iron core two 28-1 move upward, and the other end of said eccentric shaft 39-3 is provided with and is used to drive the lockhole (not shown) that eccentric shaft 39-3 rotates.Only need during unlatching that manual key is inserted lockhole and rotate gently eccentric shaft 39-3 is rotated, 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 that is used for opens solenoid valve, and this hand hoisting assembly 40 mainly comprises lifting handwheel 40-1 and screw mandrel 40-2; During use; Promote handwheel 40-1 through rotating, rise thereby drive screw mandrel 40-2, when screw mandrel 40-2 rises; Drive lifting arm 4 and rise, thereby main valve plug 24 is opened.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every technical spirit all still belongs in the protection domain of technical scheme of the present invention any simple modification, change and equivalent structure transformation that above embodiment did according to the present invention.
Claims (10)
1. 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); Said lifting arm (4) is provided with the tooth bar (5) that extends along lifting arm (4) length direction; The upper surface of said base plate (3) is provided with connector one (11), is rotatablely equipped with power transmission shaft (13) on the said connector one (11), and an end of said power transmission shaft (13) is equipped with the gear (12) that is meshed with tooth bar (5); The other end of said power transmission shaft (13) is equipped with ratchet (6); The upper surface of said base plate (3) vertically is provided with cramp bar (7), and the upper end of said cramp bar (7) is rotatably connected to long lever (8), the center that the tie point of said cramp bar (7) and long lever (8) departs from long lever (8) length direction; Said long lever (8) is positioned at the top of ratchet (6), is installed with the ratchet (9) that matches with ratchet (6) on the said long lever (8).
2. a kind of valve core of the electromagnetic valve hoisting mechanism according to claim 1; It is characterized in that: comprise the mechanical superpressure control device (2) that is arranged on the electromagnetic valve valve gap (21); Said mechanical superpressure control device (2) comprises crust of the device one (2-1) and is installed in the piston rod one (2-2) in the crust of the device one (2-1); Pressure spring one (2-3) is installed on the said piston rod one (2-2); Said crust of the device one (2-1) is installed on the valve gap (21) of electromagnetic valve; The inside of said crust of the device one (2-1) is connected with the main valve plug epicoele (26) of electromagnetic valve, and said base plate (3) level is installed on the outer wall on crust of the device one (2-1) top, and an end of said 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 said piston rod one (2-2), the distance between said 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); The under-voltage control device of said machinery (10) comprises crust of the device two (10-1) and is installed in the piston rod two (10-2) in the crust of the device two (10-1); Pressure spring two (10-3) is installed on the said piston rod two (10-2); The other end of said long lever (8) is connected with the upper end of piston rod two (10-2), and the upper end extending apparatus shell two (10-1) of said piston rod two (10-2), said crust of the device two (10-1) are installed on the electromagnetic valve valve gap (21); The inside of said crust of the device two (10-1) is connected with the main valve plug epicoele (26) of electromagnetic valve, and said ratchet (6) is positioned between cramp bar (7) and the mechanical superpressure control device (2).
4. a kind of valve core of the electromagnetic valve hoisting mechanism according to claim 1; It is characterized in that: said base plate (3) is gone up and is positioned at long lever (8) one sides relevant valve Electrical heads (14) is set; Be provided with bearing support (16) between said long lever (8) and the pass valve Electrical heads (14); Be rotatablely equipped with short lever (15) on the said bearing support (16); One end of said short lever (15) is gone up the upper end of moving iron core one (14-1) and is connected with closing valve Electrical heads (14), and the other end of said short lever (15) is near mechanical superpressure 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 said piston rod one (2-2) is provided with boss one (2-4); Top in the said crust of the device one (2-1) is provided with the sleeve one (2-5) that supplies piston rod one (2-2) to pass; Said pressure spring one (2-3) is installed between boss one (2-4) and the sleeve one (2-5); The upper end of said pressure spring one (2-3) is connected to the lower surface of sleeve one (2-5), and the lower end of said 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 said piston rod two (10-2) is provided with boss two (10-4); Top in the said crust of the device two (10-1) is provided with the sleeve two (10-5) that supplies piston rod two (10-2) to pass; Said pressure spring two (10-3) is installed between boss two (10-4) and the sleeve two (10-5); The upper end of said pressure spring two (10-3) is connected to the lower surface of sleeve two (10-5), and the lower end of said 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 said base plate (3) is provided with supporting base (17); The lower end of said supporting base (17) is installed on the said valve gap (21); The upper end of said supporting base (17) is installed on the base plate (3), offers the vertical through hole that supplies lifting arm (4) to pass in the said 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 the inwall of said crust of the device one (2-1) bottom, outer wall and crust of the device one (2-1) is provided with sealing ring one (18); The lower surface of the inwall of said crust of the device two (10-1) bottom, outer wall and crust of the device two (10-1) is provided with sealing ring two (19).
9. a gas well mouth is used guide electromagnetic valve; Comprise valve body (20) and be arranged on the valve gap (21) of valve body (20) top; Be provided with inlet channel (22) and outlet passageway (23) in the said valve body (20); Be provided with main valve plug (24) in the said valve gap (21), be provided with main spring (25) in the said main valve plug (24), form main valve plug epicoele (26) between said main valve plug (24) top and the valve gap (21); Form main valve plug cavity of resorption (27) between said main valve plug (24) bottom and the valve body (20), it is characterized in that: comprise the described spool hoisting mechanism of each claim among the claim 1-8.
10. a kind of gas well mouth according to claim 9 is used guide electromagnetic valve; It is characterized in that: said valve gap (21) is provided with the balance pipe (37) that is used to be communicated with inlet channel (22) and main valve plug epicoele (26); One side of said valve gap (21) is provided with out valve Electrical heads (28); The said valve Electrical heads (28) of opening is connected with the sidewall of valve gap (21) through connector two (29); Saidly open the top that valve Electrical heads (28) is arranged on connector two (29); Said connector two (29) is gone up and the junction that is positioned at connector two (29) and valve gap (21) sidewall is provided with endless belt one (35); Said 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); Vertically be provided with the unloading hole A section (30) that is communicated with outlet passageway (23) on the said valve gap (21); Be horizontally disposed with unloading hole B section (31) in the said valve gap (21), be provided with unloading hole C section (32) and unloading hole D section (33) in the said connector two (29), an end of said unloading hole B section (31) is communicated with the upper end of unloading hole A section (30); The other end of said unloading hole B section (31) is communicated with an end of unloading hole C section (32); The other end of said unloading hole C section (32) is communicated with endless belt two (36), and an end of said unloading hole D section (33) is communicated with endless belt two (36), and the other end of said unloading hole D section (33) is communicated with endless belt one (35); Be horizontally disposed with on the said valve gap (21) and be useful on the unloading hole E section (34) that is communicated with endless belt one (35) and main valve plug epicoele (36); Said lower end of opening the moving iron core two (28-1) of valve Electrical heads (28) is equipped with the sealing mat (28-2) that is used for seal band two (36), and the said valve Electrical heads (28) of opening is connected with connector two (29) through fittings body (38), and the lower end of said moving iron core two (28-1) is passed fittings body (38) and connected with endless belt two (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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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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| Application Number | Priority Date | Filing Date | Title |
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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 CN102704889B (en) | 2014-07-02 |
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| CN104695900A (en) * | 2015-03-18 | 2015-06-10 | 中国石油大学(北京) | Intelligent explosion-proof solenoid valve |
| CN104727778A (en) * | 2015-03-18 | 2015-06-24 | 中国石油大学(北京) | Remote high-pressure well opening emergency cut-off device |
| CN106150431A (en) * | 2016-08-10 | 2016-11-23 | 中国石油大学(华东) | Coal bed gas well anti-blocking precise controlling regulation valve |
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| CN102704889B (en) | 2014-07-02 |
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