Adjustable back frame vehicle-mounted hydraulic energy-storing workover rig
One, technical field
The utility model relates to the adjustable back frame vehicle-mounted hydraulic energy-storing workover rig that the well workover of a kind of oil field is used.
Two, background technology
The present workover rig in oil field mainly is the tractor hoist workover rig of usefulness, self is not with derrick the tractor hoist workover rig, need cooperate with derrick installation team during well workover, because of well workover team and derrick installation team are not the units of a uniform dispatching, two units cooperate the often inharmonic phenomenon of generation, cause the well workover excessive cycle, rate and crude output when influencing the production of oil well, according to actual conditions, the scientific research personnel has studied a kind of fluid pressure type workover rig that does not have derrick, aspect well-repairing work, be applied, but in application process, find to have some problems, also do not obtain the approval of well workover unit fully.Main existing problems are following 1, in microthermal climate not oil return of fluid pressure line or oil return slow, workover treatment can not normally be carried out.2, the fluid pressure line elbow bend is too many, and the pressure loss is big, and noise is big, operation is not steady; 3, brake not steadily, make hook impact force up or down too big, exist the unsafe factor of hurting sb.'s feelings; 4,4 legs of back of the body car do not have guiding mechanism, make hydraulic main cylinder easily produce inclination; 5, the weight indicator check weighing is inaccurate, easily causes misoperation, produces contingency; 6, be hooked in greatly in the operation and easily produce rotation, make to remove oil pipe and be awkward; 7, wire rope dead line cephalic flexure rate radius is too small, is easy to generate disconnected taking off and causes serious accident; 8, the hydraulic tube rotation is dumb, and blow-by influences the transmission of hydraulic pressure.
Three, summary of the invention
The purpose of this utility model provides a kind of adjustable back frame vehicle-mounted hydraulic energy-storing workover rig, solves the problem that above-mentioned prior art exists.
The technical solution of the utility model realizes in the following manner:
The utility model comprises the fluid cylinder seat that is located at the trailer prelaminar part, be located at the combined type master's fluid cylinder on the fluid cylinder seat, exist side by side with combined type master fluid cylinder and accumulation of energy cylinder and the fixed pulley that links to each other, the overhead traveling crane assembly that is located at combined type master fluid cylinder top, the amplitude oil cylinder that fixes by wire rope and overhead traveling crane assembly quiet taken turns, fixed pulley links to each other with movable pulley hook, with accumulation of energy cylinder and trailer plate, be located at the Master Control Room on the trailer plate, the adjustable supporting leg on power distribution cabinet, elevated pressure nitrogen gas bag, hydraulic pump unit, fuel tank, fluid pressure line and the trailer plate; It is characterized in that on the fluid cylinder seat, being provided with the buffer-type brake valve and the two-position three way combined directional valve that link to each other with fluid pressure line, be provided with the overflow-type counterbalance valve, have the lever draw-bar donamometer mechanism that links to each other with the draw-bar donamometer point gear at the fluid cylinder seat in backflow place of fuel tank; Be provided with the swivel joint that links to each other with the hydraulic pump outlet with the two position three way directional control valve import in fluid cylinder seat bottom; The locking device that is provided with at the link position of hook housing and hook.
The buffering brake valve is made up of valve body oil-in, buffering mouth, oil-out, spool, valve seat, spool limiting plate, piston rod and piston, valve body is made up of two threeways up and down, between flange connect, following threeway end opening is made as oil-in, the side mouth is made as the buffering mouth, end opening with last threeway suitable for reading is relative, is provided with valve seat at threeway opposite position up and down; The side mouth of last threeway is made as oil-out, suitable for readingly be connected with piston rod by flange, between two flanges, accompany the spool limiting plate, in last threeway, be provided with cone plug, be provided with piston in piston rod, valve core rod enters piston rod by core limiting plate centre bore, and the upper end is provided with the undergauge section, the undergauge section is passed piston center hole, and is fixing with piston with nut.
Swivel joint is made up of oil inlet pipe, centerbody, retainer, hold-down nut, rotary body and flowline, rotary body is made as right-angle tee shape, left end is provided with flange with the upper end and is connected with the oil-out flange with the oil-in of flanged dish respectively, straight-through section at right-angle tee is inlaid with cylindrical center's body, be provided with the hole, right angle in the centerbody, the two ends in hole communicate with oil-in and oil-out respectively, and the right-hand member of centerbody is provided with the undergauge section that the undergauge section is passed rotary body, and are fixing with rotary body with hold-down nut.
Draw-bar donamometer mechanism is by tensile machine fixed head, fixed wheel junction plate, draw-bar donamometer lever and draw-bar donamometer dial plate point gear connecting rod are formed, pulling force and mechanism's fixed head are fixed in the support of fluid cylinder seat, the draw-bar donamometer lever is made as ellipse, one end is connected with tensile machine fixed head bearing pin, the other end is connected with draw-bar donamometer index mechanism connecting rod bearing pin, and middle left side is connected with fixed wheel junction plate bearing pin.
The hook locking device is by the pinhole that is located on the hook joint pin, be welded in the pin cover at hook housing undergauge place, pass pin cover center and insert the pin of going up band draw ring, middle and lower part band annular table of pinhole and the helical spring composition between pin cover and the annular table, the center line of pin cover, pin and pinhole is on same axis.
The quiet wheel is the steel cord ends fast pulley, is made as semicircle, arc-shaped surface is provided with twice curved wire rope and hangs groove.
Adjustable supporting leg is made as oil cylinder and regulates the leading screw combined type, is made up of oil cylinder, piston and adjusting leading screw, and oil cylinder is arranged on top, regulates leading screw and is arranged on the bottom; Be provided with the piston of band piston rod in the oil cylinder, be provided with male thread in the bottom of piston rod; Regulate the leading screw lower end and be provided with the disc pallet; Regulating leading screw is connected with piston rod by adjusting nut; Be provided with a hydraulic oil import or export on the top of oil cylinder, be provided with a hydraulic oil import or export in the bottom of oil cylinder.
The utility model has solved the prior art described in the background technology and has had all problems, has guaranteed sharp safe the carrying out of the oil-water well scope of operation, has improved the operating speed of oil-water well, has shortened duty cycle and has reduced workover cost.
Four, description of drawings
Fig. 1-structural representation of the present utility model
The vertical view of Fig. 2-Fig. 1
The left view of Fig. 3-Fig. 1
Fig. 4-buffering brake valve structural representation
Fig. 5-quiet wheel construction schematic diagram
Fig. 6--draw-bar donamometer structural scheme of mechanism
Fig. 7-rotary joint structure schematic diagram
Fig. 8-hook locking device structure schematic diagram
Fig. 9-fluid pressure line schematic diagram
The adjustable supporting leg 3-of 1-hook 2-fluid cylinder seat 4-fixed pulley 5-combined type master fluid cylinder 6-accumulation of energy cylinder 7-overhead traveling crane assembly 8-amplitude oil cylinder 9-overflow-type counterbalance valve among the figure
The quiet wheel of 16-hydraulic pump unit 17-nitrogen bag 18-fuel tank 19-power distribution cabinet 20-Master Control Room 21-among Fig. 2
The adjustable supporting leg of the 10-buffer-type brake valve 11-two-position three way combined directional valve 12-swivel joint 13-lever draw-bar donamometer 14-of mechanism rod assembly 15-among Fig. 3
10-1-oil-in 10-2-buffering mouthful 10-3-oil-out 10-4-valve seat 10-5-spool 10-6-spool limiting plate among Fig. 4
13-1-fixed head 13-2-fixed wheel junction plate 13-3-draw-bar donamometer lever 13-4-connecting rod among Fig. 6
12-1-oil inlet pipe 12-2-centerbody 12-3-retainer 12-4-rotary body 12-5-hold-down nut 12-6-flowline among Fig. 7
1-1 hook locking bar 1-2-hook locking device 1-3-hook housing among Fig. 8
Main valve 1,2,3 among Fig. 9 is meant the two-position three way combined directional valve
Four, the specific embodiment
For further disclosing the technical solution of the utility model, elaborate by embodiment below in conjunction with Figure of description:
As Fig. 1,2, shown in 3, the utility model comprises the fluid cylinder seat 3 that is located at the trailer prelaminar part, be located at the combined type master's fluid cylinder 5 on the fluid cylinder seat, the accumulation of energy cylinder 6 and the fixed pulley 4 of existing side by side and linking to each other with combined type master fluid cylinder, be located at the overhead traveling crane assembly 7 at combined type master fluid cylinder top, logical wire rope and the quiet of overhead traveling crane assembly take turns 21, the hook 1 that fixed pulley 4 is connected with movable pulley, the amplitude oil cylinder 8 that fixes with accumulation of energy cylinder and trailer plate, be located at the Master Control Room 20 on the trailer plate, power distribution cabinet 19, elevated pressure nitrogen gas bag 17, hydraulic pump unit 16, fuel tank 18 and fluid pressure line and adjustable supporting leg 15. on the trailer plate on the fluid cylinder seat, be provided with link to each other with fluid pressure line by an oil-in 10-1 buffering mouthful 10-2, oil-out 10-3, valve seat 10-4, buffer-type brake valve 10 (as shown in Figure 4) and two position three way directional control valve 11 that spool 10-5 and spool limiting plate 10-6 form, solved the brake buffer problem, brake steadily, highly sensitive, crawl control can be within 0-10mm.Be provided with overflow-type counterbalance valve 9 in backflow place of fuel tank 18 and replaced original top petrol tank, make the gear reflection of combined type master fluid cylinder 5 sensitive, solved in microthermal climate oil return slowly or not oil return influence the problem of workover treatment; Have by fixed head 13-1 fixed wheel junction plate 13-2 at the fluid cylinder seat, the precision (as shown in Figure 6) of draw-bar donamometer has improved in the draw-bar donamometer mechanism 13 that draw-bar donamometer lever 13-3 and connecting rod 13-4 form; Have the swivel joint of forming by oil inlet pipe 12-1, centerbody 12-2, retainer 12-3, rotary body 12-4, hold-down nut 12-5 and flowline 12-6 12 that is connected with hydraulic pump unit 16 with two position three way directional control valve 11 imports at fluid cylinder seat 3, the high-pressure hose that has replaced the big latus rectum of former usefulness has improved safety factor (as shown in Figure 7); Davit and hook housing rotary part on hook suspention hook housing 1-3 are provided with locking device 1-2, have avoided being hooked in greatly the hidden danger (as shown in Figure 8) that any rotation in the operation easily causes casualty accident; Original dead line head is improved to semicircle quiet the wheel, has increased the suspension radius of wire rope, solved, cause that wire rope collapses broken problem, improved the application life of wire rope because of the hanging steel rope radius is little.(as shown in Figure 5)
Operating principle of the present utility model, as shown in Figure 9
1. workover rig in place after, operate adjustable supporting leg reversal valve and front leg strut reversal valve to the support oil cylinder correct position.
2. operate the amplitude oil cylinder reversal valve and make combined type master fluid cylinder and accumulation of energy cylinder in vertical state.
3. operate valve 1 and form one group of hydraulic control two-bit triplet reversal valve with main valve 1, fluid is by the A chamber of main valve 1, buffering brake valve turnover combined type master fluid cylinder; Operation valve 2 is formed one group of hydraulic control two-bit triplet guide position threeway pilot valve with main valve 2, and fluid is through the C chamber of main valve 3 turnover combined type master fluid cylinders.
4. the classification of gear
The turnover high pressure oil condition of controlling A, B, C three chambeies respectively is divided into four gears, and wherein A, B, C advance hydraulic oil simultaneously, is the I shelves, the lifting strength minimum of this gear, but hoisting velocity is the fastest; A, B be Jin Gao Yu oil simultaneously, and the C chamber takes back oil, is the II shelves; A, C advance hydraulic oil simultaneously, and the B chamber takes back oil, are the III shelves; A advances hydraulic oil, and B, C chamber take back oil simultaneously, is the IV shelves, this gear lifting force maximum, but speed minimum; When transferring tubing string, A, B, C three chambeies take back oil simultaneously, lean on the deadweight of tubing string to reach the purpose of transferring.
5. energy-storage system
Accumulation of energy cylinder and nitrogen bag are formed energy-storage system, when rising single or tubing string when transferring, the hydraulic oil of pump discharge is by the gas in the piston compressed nitrogen gas bag, reach the purpose of accumulation of energy, when system needs a large amount of hydraulic oil, for system provides a large amount of hydraulic oils, improve reaction speed greatly in the effect of Compressed Gas and piston short time; 6. counterbalance valve has been installed in oil return, has been made still to keep certain pressure in the oil return pipeline, made B, the C chamber of combined type master fluid cylinder can not produce the phenomenon of inhaling sky because main fluid cylinder is vertical state.
7. brake
Operation buffer-type brake reversal valve, feasible system are to the control of combined type master fluid cylinder A chamber turnover fluid, by buffer-type brake valve valve seat and cooperating of spool realizing brake.