CN210950127U

CN210950127U - Driving mechanism for hydraulic and manual rapid conversion of fracturing flat valve

Info

Publication number: CN210950127U
Application number: CN201921762831.7U
Authority: CN
Inventors: 张学青; 杨培建; 张含明; 董树昊; 何振涛; 张晓鹏; 袁俊
Original assignee: JIANGSU HONGTAI PETROCHEMICAL MACHINERY CO Ltd
Current assignee: JIANGSU HONGTAI PETROCHEMICAL MACHINERY CO Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-07
Anticipated expiration: 2029-10-12

Abstract

A driving mechanism for rapidly converting hydraulic pressure and manpower of a fracturing flat valve comprises a hydraulic driving part and a manpower driving part; in the hydraulic driving part, two ends of a hydraulic cylinder barrel, one side of a bracket cylinder cover and one side of a valve cover cylinder cover are connected into a bypass pipeline by a pipe joint, a bent pipe and a stop valve; in the manual driving part, the upper ends of the rotating bracket and the hand wheel are provided with an upper sliding sleeve and a lower sliding sleeve which are relatively meshed and can relatively rotate, and an elastic bolt fixed below the upper sliding sleeve is matched with a bolt hole on the upper sliding sleeve, so that the axial positions of ball nuts moving up and down in central holes of the upper sliding sleeve and the lower sliding sleeve are controlled, and the quick switching of two different driving methods is realized. The fracturing flat valve driven by hydraulic pressure and hand wheel can meet the requirement of users on-site operation, avoid the loss and waste caused by using two different driving methods to fracture the double-valve configuration of the flat valve, and has obvious economic and social benefits.

Description

Driving mechanism for hydraulic and manual rapid conversion of fracturing flat valve

Technical Field

The utility model relates to an oil, natural gas drilling equipment, fracturing plate valve actuating mechanism's development.

Background

In petroleum and natural gas drilling and production equipment at home and abroad, most of the used fracturing flat valves are single driving methods; namely: hydraulic drive or manual hand wheel drive. Because the ultrahigh working pressure and the sand-containing fracturing fluid greatly damage the used equipment during the fracturing operation, once the equipment leaks, the jet flow of the fracturing fluid threatens the personal safety around the equipment; therefore, the existing fracturing equipment mostly adopts a control method which mainly adopts hydraulic remote control and assists close-distance manual control. But hydraulic remote drives require complex auxiliary systems and associated preconditions; if the auxiliary system goes wrong or the precondition is lacked, the whole fracturing flat valve and the fracturing complete equipment cannot operate; therefore, a manually operated valve is indispensable. The majority of existing fracturing plants use two different driving methods of fracturing valves in a "dual valve configuration": one side of the hydraulic drive valve is connected with a manual drive valve in series, and the manual drive valve is used as a safety backup and is worn; this not only increases the size, weight and economic burden on the user of the fracturing equipment, but also wastes a significant amount of valuable natural resources. Therefore, the fracturing flat valve is driven by a few hydraulic and manual double drives; however, the design of the driving mechanism of the first-released double-driving valve is not very complete, and mainly, when two different driving methods are mutually converted, the process is complicated, time and labor are wasted, and the requirement of field operation which is difficult to adapt to time-consuming is difficult; the dual-drive method of other types of valves is not specially designed for the fracturing flat valve, and the used structure of the matched opening and closing nut and the grooved wheel cannot meet the special working requirements of ultrahigh pressure, large torque and the like during fracturing operation on the switch resistance of the valve and the strength of parts.

Disclosure of Invention

The utility model discloses to the problem that current dual drive valve exists, on the basis of own "hand wheel and hydraulic drive wafer valve", further optimize its actuating mechanism, realize in same valve, the quick conversion of hydraulic pressure and manpower drive method to satisfy user's site operation requirement.

The utility model discloses constitute by hydraulic drive part and manpower drive part, its innovation part is: in the hydraulic driving part, two ends of a hydraulic cylinder barrel, one side of a bracket cylinder cover and one side of a valve cover cylinder cover are connected into a bypass pipeline by a pipe joint, a bent pipe and a stop valve; in the manual driving part, the upper ends of the rotating bracket and the hand wheel are provided with an upper sliding sleeve and a lower sliding sleeve which are relatively meshed and can relatively rotate, and an elastic bolt fixed below the upper sliding sleeve is matched with a bolt hole on the upper sliding sleeve, so that the axial positions of ball nuts moving up and down in central holes of the upper sliding sleeve and the lower sliding sleeve are controlled, and the quick switching of two different driving methods is realized.

Because the utility model connects the two ends of the hydraulic cylinder barrel, the bracket cylinder cover and one side of the valve cover cylinder cover into a bypass pipeline by the pipe joint, the elbow and the stop valve; when the hydraulic pressure is converted into the manual driving, the hydraulic oil in the cylinder barrel can be automatically converted up and down only by opening the stop valve and manually driving the valve and driving the piston to move; the oil pipe joints at the upper end and the lower end of the oil cylinder do not need to be removed as before, and hydraulic oil in the hydraulic cylinder is discharged, so that the troublesome process that manual driving is obstructed by the hydraulic oil is avoided. And moreover, the environmental pollution or the trouble of treatment caused by the discharge of the hydraulic oil are avoided. When hydraulic drive is carried out, the normal working performance of the hydraulic cylinder can be recovered only by closing the stop valve.

The valve-stem nut frictional resistance who considers ordinary tooth shape is big, can't be with its manpower drive super highly compressed fracturing wafer valve, the utility model discloses choose for use the basic part of ball screw pair as manpower actuating mechanism for use. To the inseparable characteristics of ball nut, the utility model discloses in the upper end of rotating support and hand wheel, with two relative interlocks, again can be relative pivoted upper sliding sleeve and lower sliding sleeve to and fix the elasticity bolt and the bolt hole on the lower sliding sleeve below the upper sliding sleeve and cooperate, control the axial position of the ball nut who reciprocates in upper sliding sleeve and lower sliding sleeve centre bore, cooperate the bypass pipeline to carry out the conversion of two kinds of drive methods of manpower and hydraulic pressure in step. When the valve is driven by hydraulic pressure, the elastic bolt is inserted into the hole corresponding to the hydraulic mark, so that the ball screw pair can freely slide in the upper and lower sliding sleeves under the action of the piston; when the valve is driven by manpower, the ball nut is moved down to the lower sliding sleeve only by rapidly rotating the hand wheel; then one hand pulls out the elastic bolt, the other hand slightly rotates the upper sliding sleeve, the elastic bolt is inserted into the hole corresponding to the manual mark, the ball nut is axially locked, and the valve can be manually driven to open and close. Thereby avoiding that a plurality of bolts on the upper and lower sliding sleeve connecting flange need to be loosened one by one before and the fixed positioning pin needs to be pulled out; then the upper sliding sleeve is rotated to find another positioning hole, the fixed positioning pin is inserted, and a plurality of bolts on the connecting flange are screwed one by one, so that the time-consuming and labor-consuming operation processes are reduced by several times.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention in full section, superimposed over a main body of a flat valve;

FIG. 2 is a schematic view of the overall structure of the embodiment of the present invention in full section, separately disposed below and above the main body of the flat valve;

FIG. 3 is an enlarged view of the manually actuated component of FIGS. 1 and 2, taken along section A-A and partially in section at the resilient latch;

FIG. 4 is an enlarged view of the manual driving part of FIGS. 1 and 2 showing the elastic latch and the flag in the direction B;

fig. 5 is a schematic cross-sectional enlarged view of a part of the bypass line and the shutoff valve in the hydraulic drive unit of fig. 1 and 2.

The names of the components indicated by the reference numerals in the drawings are as follows:

1. bearing shell, 2, thrust bearing, 3, oil cup, 4, rotating support, 5, hand wheel, 6, nut, 7, lower sliding sleeve, 8, ball screw, 9, ball nut, 10, upper sliding sleeve, 11, retainer ring, 12, screw, 13, round cover plate, 14, elastic bolt, 15, retainer ring, 16, bolt, 17, seal ring, 18, stop screw, 19, set screw, 20, support cylinder cover, 21, small seal ring, 22, cylindrical pin, 23, large seal ring, 24, piston, 25, hydraulic cylinder barrel, 26, piston rod, 27, seal assembly, 28, valve cover cylinder cover, 29, grease injection valve, 30, seal backing ring, 31, bolt nut, 32, oil pipe joint, 33, elbow, 34, stop valve, 35, long screw nut, 36, balance rod, 37, indicator plate, 38 and shield.

Detailed Description

The following describes the specific implementation of the present invention with reference to the accompanying drawings.

In fig. 1 and 2: the utility model discloses constitute by hydraulic drive part and manpower drive part, combine with the main part of fracturing plate valve mutually, drive the switch of valve. The utility model discloses there are two kinds of combination methods with the wafer valve main part: FIG. 1 is an embodiment of a hydraulic drive unit and a manual drive unit arranged in overlying relation to a body of a flat valve; FIG. 2 is a schematic view of the embodiment with the hydraulic drive unit and the manual drive unit separately disposed below and above the main body of the plate valve; the configuration and individual parts of the two embodiments are different, but the main components and the working principle are the same.

The utility model discloses a manpower drive part comprises bearing housing 1, thrust bearing 2, oil cup 3, rotation support 4, hand wheel 5 and cap 6, lower sliding sleeve 7, ball 8, ball nut 9, last sliding sleeve 10, retaining ring 11, screw 12, apron 13, elasticity bolt 14, rand 15, bolt 16, sealing washer 17, stop screw 18 and holding screw 19. The middle lower part of the rotating bracket 4 carries the thrust bearing 2 and the sealing ring 17 and is arranged in a step hole of the bearing shell 1; the prism and the stud end on the upper part of the rotating bracket 4 extend out of the bearing shell 1 and are fixed with the prism hole in the center of the hand wheel 5 and the combining cap 6 into a whole. Two threaded holes are drilled on the circumference of the middle part of the bearing shell 1, and an oil cup 3 and a stop screw 18 are respectively arranged in the threaded holes; the oil cup 3 is used for filling lubricating oil to the thrust bearing 2, and the stop screw 18 is matched with the lower flange of the rotating bracket 4 and used for locking the hand wheel 5 to prevent misoperation during hydraulic driving. The upper surface of the hub of the hand wheel 5 is fixedly connected with a lower flange of the lower sliding sleeve 7 by evenly distributed bolts 16; the upper sliding sleeve 10 is sleeved at the flange at the upper end of the lower sliding sleeve 7 by a clamping sleeve at the lower end, and the upper sliding sleeve and the lower sliding sleeve are precisely matched in the radial direction and can rotate relatively; an inner clamping ring 15 divided into two halves is fixed under the clamping sleeve of the upper sliding sleeve 10 by evenly distributed bolts 16 so as to prevent the upper sliding sleeve 10 from axially falling off. The ball screw 8 and the ball nut 9 are connected into a whole by a retainer ring 11 and a screw 12, are arranged in the central holes of the bearing shell 1, the rotating bracket 4, the lower sliding sleeve 7 and the upper sliding sleeve 10, and the top of the ball screw is sealed by a round cover plate 13.

In fig. 3 and 4: the utility model discloses a manpower drive part: at the center of the lower sliding sleeve 7 and the upper sliding sleeve 10, prismatic holes or spline holes with the same shape and size are matched with prismatic bodies or spline columns on the excircle of the ball nut 9 in a sliding way so as to drive by using the hand wheel 5. A threaded hole is drilled on the circumference of the cutting sleeve at the lower end of the upper sliding sleeve 10, and an elastic bolt 14 is connected and fixed in the threaded hole; two to three bolt holes opposite to the elastic bolt 14 are drilled on the circumference of the flange at the upper end of the lower sliding sleeve 7, and after one bolt hole is combined with the elastic bolt 14, the prismatic holes or spline holes of the lower sliding sleeve 7 and the upper sliding sleeve 10 are aligned and smooth; other bolt holes are combined with the elastic bolt 14, so that the prismatic holes or the spline holes of the lower sliding sleeve 7 and the upper sliding sleeve 10 are staggered to cut off the ascending channel of the ball nut 9. Corresponding arrow marks and hydraulic and manual characters are arranged below the bolt hole of the lower sliding sleeve 7, and the driving method of the valve is displayed when the arrow marks and the hydraulic and manual characters are aligned with the elastic bolt 14. The elastic bolt 14 is formed by combining five parts, namely a sleeve, a long pin shaft, a compression spring, a nut and a pull ring; external threads are processed at two ends of the sleeve, one end of the sleeve is connected with a threaded hole in a clamping sleeve at the lower end of the upper sliding sleeve 10, and the other end of the sleeve is connected with a nut; the thin end of the long pin shaft is drilled with a radial small hole, a compression spring is sleeved on the small end, and the small end penetrates through the center holes of the sleeve and the nut, and then is buckled with the radial small hole by a pull ring to form an integral small part. The long pin shaft supported at two ends can ensure the rigidity and the positioning precision of the elastic pin 14, the longer compression spring can ensure the expansion allowance and the working elasticity of the elastic pin, and the nut and the pull ring are used for axially controlling the long pin shaft and the compression spring, so that the field operation and the maintenance are more convenient.

The utility model discloses a hydraulic drive part comprises support cylinder cap 20, little sealing washer 21, cylindric lock 22, big sealing washer 23, piston 24, hydraulic cylinder 25, piston rod 26, seal assembly 27, valve gap cylinder cap 28, notes fat valve 29, seal backing ring 30, bolt and nut 31, oil pipe joint 32, return bend 33, stop valve 34 and long screw nut 35, during separately the configuration, still includes balancing pole 36, indicator board 37 and guard shield 38 that shift out from the wafer valve main part. Wherein: the bracket cylinder cover 20 is a part with double functions of a hydraulic cylinder end cover and supporting other parts; the valve cover cylinder cover 28 is a double-layer flange part with double functions of a flat valve cover and a hydraulic cylinder end cover. The thinner end of the piston rod 26 passes through the center holes of the sealing component 27 and the valve cover cylinder cover 28 and is inserted into the center hole of the piston 24 with the small sealing ring 21 and the large sealing ring 23; the ball screw 8 or the balance bar 36 passes through the central holes of the bracket cylinder cover 20 and the small sealing ring 21, and the thicker end is fixedly connected with the piston 24 and the piston rod 26 by threads and a cylindrical pin 22. The hydraulic cylinder 25 is sleeved on the periphery of the large sealing ring 23 and the piston 24, the two ends of the hydraulic cylinder are sealed by the support cylinder cover 20, the valve cover cylinder cover 28 and the large sealing ring 23, and the hydraulic cylinder is fixed into a whole by the uniformly distributed long screw nuts 35. The pistons 24 and the piston rods 26 can be driven to reciprocate by alternately injecting hydraulic oil through the support cylinder cover 20 and the oil pipe joints 32 on the upper side of the valve cover cylinder cover 28. The hydraulic driving part of the utility model is characterized in that a plurality of reducing through holes with threads are correspondingly processed on the flanges of the bracket cylinder cover 20 and the valve cover cylinder cover 28, and a by-pass pipeline is formed by connecting the pipe joint 32, the elbow 33 and the stop valve 34; in its bypass line: the pipe joints 32 are all in the form of 'III-type connection' of 10.11.2 clause in the national standard GB/T22513-2013; the two ends of the elbow 33 are provided with connecting threads and are formed by bending 316 stainless steel pipes; the stop valve 34 is a needle-type stop valve and is provided with a pressure relief screw; so as to adapt to the requirements of ultrahigh pressure, corrosion-resistant working conditions and emergency treatment.

When the utility model is provided with the driving fracturing flat valve in an overlapping configuration, a bearing shell 1 in a manpower driving part is connected with a bracket cylinder cover 20 in a hydraulic driving part, and a ball screw 8 is connected with a piston 24 and a piston rod 26; the valve cover 28 of the hydraulic driving part is connected with the plate valve body by a sealing gasket ring 30 and a bolt nut 31, and one end of the piston rod 26 with a conical boss and a T-shaped joint is connected with the gate plate in the plate valve body to drive the valve to open and close. When the fracturing flat valve is separately configured and driven, the bearing shell 1 in the manual driving part is connected with the valve cover in the flat valve main body, and the extending end of the ball screw 8 is processed into a conical boss and a T-shaped joint and is connected with one end of the flashboard in the flat valve main body; the valve cover 28 of the hydraulic driving part is connected with the plate valve main body by a sealing gasket ring 30 and a bolt nut 31, one end of the piston rod 26 with a conical boss and a T-shaped joint is connected with the other end of the valve plate in the plate valve main body, and the valve switch is driven from two ends of the valve plate respectively. When the driving fracturing flat valve is separately configured, a balance rod 36, an indicating plate 37 and a protective cover 38 which are originally installed in a flat valve main body are installed at one end, facing outwards, of the support cylinder cover 20 and the piston 24 by threads, the cylindrical pin 22, the screw 12 and the set screw 19, so that the balance of hydraulic oil at two ends of the piston 24 in the hydraulic cylinder 25 is ensured, and the opening and closing conditions of the valve are displayed. And a grease injection valve 29 is arranged on the valve cover cylinder cover 28 and used for injecting sealing grease into the flat valve main body.

Claims

1. The utility model provides a drive mechanism of fracturing wafer valve hydraulic pressure and manpower quick switching, comprises hydraulic drive part and manpower drive part, characterized by: in the hydraulic driving part, two ends of a hydraulic cylinder barrel, one side of a bracket cylinder cover and one side of a valve cover cylinder cover are connected into a bypass pipeline by a pipe joint, a bent pipe and a stop valve; in the manual driving part, the upper ends of the rotating bracket and the hand wheel are provided with an upper sliding sleeve and a lower sliding sleeve which are relatively meshed and can relatively rotate, and an elastic bolt fixed below the upper sliding sleeve is matched with a bolt hole on the upper sliding sleeve, so that the axial positions of ball nuts moving up and down in central holes of the upper sliding sleeve and the lower sliding sleeve are controlled, and the quick switching of two different driving methods is realized.

2. The quick hydraulic and manual switching driving mechanism for the fracturing flat valve according to claim 1, which is characterized in that: the upper surface of the hand wheel hub is fixedly connected with a lower flange of the lower sliding sleeve by evenly distributed bolts; the clamping sleeve at the lower end of the upper sliding sleeve is sleeved at the flange at the upper end of the lower sliding sleeve, and the clamping sleeve and the flange are precisely matched in the radial direction and can rotate relatively; an inner clamping ring divided into two halves is fixed below the upper sliding sleeve clamping sleeve by uniformly distributed bolts so as to prevent the upper sliding sleeve from axially falling off.

3. The quick hydraulic and manual switching driving mechanism for the fracturing flat valve according to claim 1, which is characterized in that: a human-powered component: prismatic holes or spline holes with the same shape and size are used in the centers of the lower sliding sleeve and the upper sliding sleeve to be in sliding fit with prismatic bodies or spline columns on the excircle of the ball nut; a threaded hole is drilled on the circumference of the clamping sleeve at the lower end of the upper sliding sleeve, and an elastic bolt is connected and fixed in the threaded hole; two to three bolt holes opposite to the elastic bolt are drilled on the circumference of the flange at the upper end of the lower sliding sleeve, and after one bolt hole is combined with the elastic bolt, prismatic holes or spline holes of the lower sliding sleeve and the upper sliding sleeve are aligned and smooth; after other bolt holes are combined with the elastic bolt, the prismatic holes or the spline holes of the lower sliding sleeve and the upper sliding sleeve are staggered to cut off the ascending channel of the ball nut.

4. The quick hydraulic and manual switching driving mechanism for the fracturing flat valve according to claim 1, which is characterized in that: the lower part of the lower sliding sleeve bolt hole is provided with corresponding arrow marks and characters of 'hydraulic drive' and 'manual' which are aligned with the elastic bolt, and the driving method of the valve is displayed.

5. The driving mechanism for rapid hydraulic and manual switching of the fracturing flat valve according to claim 1 or 4, which is characterized in that: the elastic bolt is formed by combining five parts, namely a sleeve, a long pin shaft, a compression spring, a nut and a pull ring; external threads are processed at two ends of the sleeve, one end of the sleeve is connected with a threaded hole in a clamping sleeve at the lower end of the upper sliding sleeve, and the other end of the sleeve is connected with a nut; the thin end of the long pin shaft is drilled with a radial small hole, a compression spring is sleeved on the small end, and the small end penetrates through the center holes of the sleeve and the nut, and then is buckled with the radial small hole by a pull ring to form an integral small part.

6. The quick hydraulic and manual switching driving mechanism for the fracturing flat valve according to claim 1, which is characterized in that: in its bypass line: the used pipe joints all adopt the form of 'III-type connection' of 10.11.2 clause in the national standard GB/T22513-2013; the two ends of the used bent pipe are provided with connecting threads and are formed by bending a 316 stainless steel pipe; the stop valve is a needle-type stop valve and is provided with a pressure relief screw.