CN201250636Y

CN201250636Y - Rapid connecting side door type gate-tube preventer

Info

Publication number: CN201250636Y
Application number: CNU2008201095615U
Authority: CN
Inventors: 吴占伟; 许宏奇; 孟庆荣
Original assignee: Rongsheng Machinery Manufacturing Co Ltd Of Huabei Petroleum Heibei
Current assignee: Rongsheng Machinery Manufacturing Co Ltd Of Huabei Petroleum Heibei
Priority date: 2008-07-31
Filing date: 2008-07-31
Publication date: 2009-06-03
Anticipated expiration: 2018-07-31

Abstract

The quick-connect side door ram blowout preventer is used in oil drilling and workover construction. The feature is that there are grooves on the ram cavity and the side door of the blowout preventer housing. After the side door is installed in the blowout preventer shell, the grooves are opposite. There are housing lock blocks and side door lock blocks in the groove. The opposite surfaces of the housing lock block and the side door lock block are inlaid and fitted with toothed surfaces respectively. The locking mechanism is mainly composed of a set bolt, a horizontal ejector rod, a wear-resistant nut and a vertical ejector rod. T-shaped holes are arranged on the side doors, and set bolts are arranged at the open ends of the transverse holes. A horizontal push rod is arranged in the horizontal hole. A vertical jack rod is respectively arranged in the vertical holes. There is a T-shaped groove at the front end of the set bolt to connect with the circumferential groove at the top of the top rod, and the slope at the front end of the top rod is in contact with the slope at the end of the vertical rod. A locking fluid cylinder assembly is fixed on both sides of the side door. The effect is that the shell and the side door can be quickly connected by adopting the hydraulic structure, the side door can be opened by hydraulic pressure and the ram of the blowout preventer can be quickly replaced.

Description

Connect side door formula ram preventer fast

Technical field

The utility model relates to the preventer that oil drilling, well workover are used, and particularly a kind of ram preventer is a kind of quick connection side door formula ram preventer.

Background technology

At present, in drilling well or well workover, need to use preventer control well head.Usually need be in the construction operation at the drilling rod of different-diameter, the flashboard in the different apertures of tubing selection, so preventer is equipped with the flashboard of multiple aperture specification.Change flashboard in construction, usual method is: at first dismantle side door of blowout preventer; Take out former flashboard; According to the drilling rod in different apertures, the replacing flashboard that oil pipe is selected corresponding size; Installed and fixed side door of blowout preventer at last.

Conventional preventer is changed flashboard need dismantle the side door bolt, and finishing needs to tighten the side door bolt after changing flashboard.The labour intensity of changing ram block is big, and the replacing time is long, influences the whole construction progress.

Also having a kind of method is to be equipped with variable bore ram for preventer.Variable bore ram can satisfy the seal request of different-diameter drilling rod, oil pipe.But the design of variable bore ram, manufacturing cost are very high, increase the construction operation cost.

The utility model content

The purpose of this utility model is: a kind of quick connection side door formula ram preventer is provided, does not use the side door bolt arrangement, adopt hydraulic structure can connect housing and side door fast, utilize hydraulic pressure opening side door and the quick flashboard of changing preventer.

The technical solution adopted in the utility model is: the utility model connects side door formula ram preventer fast, mainly is made up of preventer housing, side door, housing lock dog, side door lock dog, backing plate and retaining mechanism.Fluted respectively on plane and lower plane on the preventer housing flashboard chamber.Plane and lower plane have groove respectively on side door.After side door was packed the preventer housing into, the groove in preventer housing flashboard chamber was relative with the groove of side door.In the groove of preventer housing, be fixed with bar shaped housing lock dog.Bar shaped side door lock dog is arranged in the groove of side door.Backing plate is arranged at the bottom of side door lock dog.Housing lock dog and side door lock dog opposite face are respectively toothed surface.The toothed surface of housing lock dog is inlayed with side door lock dog toothed surface and is cooperated.

Retaining mechanism mainly is made up of tight fixed bolt, transverse crown bar, wear-resisting nut and perpendicular push rod.Cross-drilled hole and vertical core are arranged on side door, and cross-drilled hole and vertical core are the T font, and cross-drilled hole is communicated with vertical core.The openend of cross-drilled hole is on the end face of side door.The opening part of the cross-drilled hole tight fixed bolt that has been threaded.Tight fixed bolt can adopt wear-resisting nut to be connected the opening part of cross-drilled hole, and described wear-resisting nut outer wall has screw thread, and endoporus has screw thread.Transverse crown bar is arranged in cross-drilled hole, and the end of transverse crown bar is inclined-plane or taper seat.The vertical core two ends are in the groove of the groove in preventer housing flashboard chamber and side door.A perpendicular push rod is arranged respectively in described vertical core.The tight fixed bolt front end has T-slot to be connected with transverse crown bar top circumferential groove, rotates tight fixed bolt, can drive transverse crown bar and move forward, and the inclined-plane of transverse crown bar front end contacts with the inclined-plane or the taper seat of perpendicular push rod end.Be fixed with locking fluid cylinder assembly in the both sides of side door,, promote locking fluid cylinder assembly piston rod and drive that the side door lock dog is upper and lower to be moved and with the engagement of housing lock dog or throw off by opening oil circuit to the locking fluid cylinder and closing oil circuit and inject high-pressure and hydraulic oil.

Number of teeth amount on the toothed surface on housing lock dog and the side door lock dog is 3-6, is arranged in parallel, and the tooth on the toothed surface is 0 °～45 °, and vertical tooth top plane, a limit is arranged.

Described groove and groove are rectangle, and the width of groove and groove is between 60～100 millimeters, and width is between 60～100 millimeters.

Stationary housing lock dog in the groove of described preventer housing, the fixed form of employing is with soket head cap screw the housing lock dog to be fixed in the groove of preventer housing 1.

The course of work of locking side door: consult Fig. 1 when closing oil circuit injection hydraulic oil to the locking fluid cylinder, piston rod drives side door lock dog 3 and moves outward, with the engagement of housing lock dog 2 profiles of tooth, after side door lock dog 3 moves to extreme position, insert backing plate 6 respectively from slit, side door lock dog 3 both sides.Consult Fig. 3.Tighten tight fixed bolt 102 again, driving transverse crown bar 103 moves forward, lean on the moving perpendicular push rod 105 of trying hard to recommend of the vertical direction of wedge shape inclined-plane generation to move outward, hold out against backing plate 6 simultaneously, backing plate 6 compresses the housing lock dog 2 and the side door lock dog 3 of engagement, prevents that the housing lock dog 2 and the side door lock dog 3 that mesh from rotating when being subjected to external force, getting loose.

The course of work of release side door: consult Fig. 3.Tight fixed bolt 102 is loosened in rotation, drives transverse crown bar 103 and outwards moves, and throws off with perpendicular push rod 105 to contact, and extracts the backing plate 6 of free state out.Consult Fig. 5.Then, open oil circuit to the locking fluid cylinder and inject hydraulic oil, piston rod wherein drives side door lock dog 3 and moves to inside, and throws off with housing lock dog 2 profiles of tooth, after side door lock dog 3 moves to extreme position, and can the release side door.

Hydraulic pressure opening or close side door adopts my ZL02232891.2 of house journal " a kind of drilling well ram preventer ".Energy pushswitch side door is changed flashboard rapidly.

The beneficial effects of the utility model: the utility model connects side door formula ram preventer fast, adopts hydraulic structure can connect housing and side door fast, utilizes hydraulic pressure opening side door and the quick flashboard of changing preventer.

Description of drawings

Fig. 1 connects side door formula ram preventer structural profile schematic diagram fast.What the left-half of Fig. 1 was represented is the side door locking state; What the right half part of Fig. 1 was represented is the side door released state.

Fig. 2 is the schematic cross section of housing lock dog 2 and side door lock dog 3.

Fig. 3 is the locking mechanism structure generalized section.

Fig. 4 is the axle side schematic diagram of tight fixed bolt 102, transverse crown bar 103 and hold-down nut 104.

Fig. 5 connects side door formula ram preventer exploded sketch fast.

Among the figure, 1-preventer housing, 2-housing lock dog, 3-side door lock dog, the 4-side door, 5-locking fluid cylinder assembly, the 6-backing plate, the 102-tight fixed bolt, the 103-transverse crown bar, the 104-hold-down nut, 105-erects push rod, 201-groove, 202-groove.

The specific embodiment

Embodiment 1:

Consult Fig. 1.The utility model connects side door formula ram preventer fast, mainly is made up of preventer housing 1, side door 4, housing lock dog 2, side door lock dog 3, backing plate 6 and retaining mechanism.On plane and the lower plane groove 201 is being arranged respectively on the preventer housing 1 flashboard chamber.Plane and lower plane have a groove 202 respectively on side door 4.Groove 201 and groove 202 are rectangle, and the width of groove 201 and groove 202 is 80 millimeters, and width is 80 millimeters.After side door 4 was packed preventer housing 1 into, the groove 201 in preventer housing 1 flashboard chamber was relative with the groove 202 of side door 4.In the groove 201 of preventer housing 1, be fixed with bar shaped housing lock dog 2.Use hexagon socket countersunk flat cap head screw, housing lock dog 2 is fixed in the groove 201 of preventer housing 1.Bar shaped side door lock dog 3 is arranged in the groove 202 of side door 4.Backing plate 6 is arranged at the bottom of side door lock dog 3.

Consult Fig. 2.Housing lock dog 2 and side door lock dog 3 opposite faces are respectively toothed surface.The toothed surface of housing lock dog 2 is inlayed with side door lock dog 3 toothed surface and is cooperated.Number of teeth amount on the toothed surface is 3, is arranged in parallel, on one side the tooth on the toothed surface is 45 °, vertical tooth top plane, a limit is arranged.

Consult Fig. 3.Retaining mechanism mainly is made up of tight fixed bolt 102, transverse crown bar 103, wear-resisting nut 104 and perpendicular push rod 105.A cross-drilled hole and a vertical core are arranged on side door 4, and cross-drilled hole and vertical core are the T font, and cross-drilled hole intersects and is communicated with vertical core.The openend of cross-drilled hole is on the end face of side door 4.The opening part of the cross-drilled hole wear-resisting nut 104 that is threaded.Described wear-resisting nut 104 outer walls have screw thread, and endoporus has screw thread.Transverse crown bar 103 is arranged in cross-drilled hole, and the end of transverse crown bar 103 is the inclined-plane.The vertical core two ends are in the groove 202 of the groove 201 in preventer housing 1 flashboard chamber and side door 4.A perpendicular push rod 105 is arranged respectively in described vertical core.

Consult Fig. 4.Tight fixed bolt 102 front ends have T-slot to be connected with transverse crown bar 103 top circumferential grooves, rotate tight fixed bolt 102, can drive transverse crown bar 103 and move forward, and the inclined-plane of transverse crown bar 103 front ends contacts with the inclined-plane or the taper seat of perpendicular push rod 105 ends.

Consult Fig. 5.Be fixed with locking fluid cylinder assembly 5 in the both sides of side door 4,, promote locking fluid cylinder assembly 5 piston rods and drive that side door lock dog 3 is upper and lower to be moved and with 2 engagements of housing lock dog or throw off by opening oil circuit to the locking fluid cylinder and closing oil circuit and inject high-pressure and hydraulic oil.

Claims

1. A quick-connect side door gate type blowout preventer, mainly composed of blowout preventer shell (1), side door (4), shell lock block (2), side door lock block (3), backing plate (6) Composed with a locking mechanism, it is characterized in that there are grooves (201) on the upper and lower planes of the gate chamber of the blowout preventer housing (1), respectively, and grooves (201) on the upper and lower planes of the side door (4) respectively. Groove (202), when the side door (4) is installed into the BOP casing (1), the groove (201) of the ram chamber of the BOP casing (1) is opposite to the groove (202) of the side door (4) , a bar-shaped housing lock block (2) is fixed in the groove (201) of the BOP housing (1), and a bar-shaped side door lock block (3) is fixed in the groove (202) of the side door (4), There is a backing plate (6) at the bottom of the side door lock block (3), and the opposite surfaces of the housing lock block (2) and the side door lock block (3) are respectively toothed surfaces, and the toothed surfaces of the housing lock block (2) are aligned with the side door The toothed surface of the lock block (3) is inlaid and fitted;

Locking mechanism is mainly made up of set bolt (102), horizontal ejector rod (103), wear-resistant nut (104) and vertical ejector rod (105), has horizontal hole and vertical hole on side door (4), horizontal hole and vertical hole. The vertical hole is T-shaped, and the horizontal hole is connected with the vertical hole. The opening end of the horizontal hole is on the end face of the side door (4), and the opening of the horizontal hole is threadedly connected with a set bolt (102). (103), the end of the horizontal ejector rod (103) is a slope or a conical surface, and the two ends of the vertical hole are in the groove (201) of the gate cavity of the blowout preventer housing (1) and the groove (202) of the side door (4). ), there is a vertical jack rod (105) in the vertical hole respectively, and the front end of the set bolt (102) has a T-shaped groove to connect with the circumferential groove on the top of the horizontal jack bar (103). Turn the set bolt (102) , can drive the horizontal ejector rod (103) to move forward, the inclined surface of the front end of the horizontal ejector rod (103) is in contact with the inclined surface or the conical surface of the vertical ejector rod (105) end, and locking devices are fixed on both sides of the side door (4). Hydraulic cylinder assembly (5).

2. The quick-connect side door ram BOP according to claim 1, characterized in that: the set bolt (102) is connected to the opening of the horizontal hole by a wear-resistant nut (104), and the wear-resistant nut (104) outer wall has thread, and inner hole has thread, and set bolt (102) is connected in the wear-resistant nut (104).

3. The quick-connect side door ram blowout preventer according to claim 1, characterized in that: the number of teeth on the toothed surface of the housing lock block (2) and the side door lock block (3) is 3 to 6 Two, arranged in parallel, the teeth on the tooth profile surface are 0°～45°, and one side is perpendicular to the plane of the tooth top.

4. The quick-connect side gate type ram blowout preventer according to claim 1, characterized in that: the groove (201) and the groove (202) are rectangular, and the groove (201) and the groove (202) are The width is between 60 and 100 mm, and the width is between 60 and 100 mm.

5. The quick-connect side gate type ram blowout preventer according to claim 1 or 2 or 3 or 4, characterized in that: the groove (201) of the blowout preventer casing (1) fixes the casing The locking block (2) is fixed in the groove (201) of the blowout preventer housing (1) by using hexagon socket head cap screws to fix the housing locking block (2).