CN2167216Y

CN2167216Y - Starting arrangement for hydraulic pump

Info

Publication number: CN2167216Y
Application number: CN 93228191
Authority: CN
Inventors: 李伟
Original assignee: SHENYANG OIL EXTRACTING FACTORY LIAOHE PETROLIUM EXPLORATION BUREAU
Current assignee: SHENYANG OIL EXTRACTING FACTORY LIAOHE PETROLIUM EXPLORATION BUREAU
Priority date: 1993-05-17
Filing date: 1993-05-17
Publication date: 1994-06-01
Anticipated expiration: 2003-05-17

Abstract

The utility model relates to a staring arrangement for a hydraulic pump, which is used for petroleum exploitation. The utility model is characterized in that the utility model is composed of a separating joint 1, a clipping male pin 3, a flow guiding plunger piston 4, a tailstock 8, etc. When the pump is started up, the pressure acts on the whole cross section of the flow guiding plunger piston; thus, when the pressure is raised, the clipping male pin can be clipped, and the flow guiding plunger piston moves downwards to ensure the pump raising pressure to be transferred to a fixing valve, which can make the pump raising area be increased by 57%, and the pump raising pressure be reduced by 36%; therefore, the utility model can effectively prevent accidents and loss caused in the way that the system pressure can not make the pump raise from underground when the pump raising pressure is high. The utility model has the advantage of simple structure and can be matched with various hydraulic pumps.

Description

Starting arrangement for hydraulic pump

The utility model relates to a kind of hydraulic pump that is used for the oil field petroleum production and has helped device.

Oil field hydraulic pump oil recovery well, the down-hole hydraulic pump is being tripped out in the maintenance process, after normal specific condition because of oil well or hydraulic pump itself has caused pumping pressure to reach system's dry-pressing, (oil field is on-the-spot at present is generally 17～20MPa) with the dry-pressing of waterpower pumping system, hydraulic pump still can not play working barrel, cause and employ special vehicle and carry out high pressure and play pump, play pumping pressure generally between 25～30MPa, caused unnecessary manpower, the material resources waste, also influenced the oil well ordinary production time, sometimes, high pressure plays pump and also can not rise, have to carry out workover eration, thereby cause bigger waste.

Task of the present utility model is to provide a kind of reliable oil field to help device with hydraulic pump oil recovery well hydraulic pump.Adopt this to help device to play pump, can make pumping pressure reduce by 36%, thereby guarantee under system's dry-pressing, just hydraulic pump to be tripped out from the down-hole, effectively avoided not play the economic loss that causes because of pump.

The utility model is to realize like this.It by separating joint 1, positioning dowel 2, cut off pin 3, water conservancy diversion plunger 4, seal assembly 5, baffle ring 6, seal ring 7, tailstock 8, seal ring 9 and form, its assembly process is as follows: will pack in the inclined hole on the water conservancy diversion plunger 4 through the pin 3 of cutting off of the suitable diameter that calculates, and locate with positioning dowel 2; Again seal ring 7 is packed in the seal groove of water conservancy diversion plunger 4 bottoms, and water conservancy diversion plunger 4 is inserted in the radial hole of separating joints 1; Again seal assembly 5, back-up ring 6 are contained on the separating joint 1; At last separating joint 1 lower end external screw thread is connected promptly assembling finishes with the tailstock 8 top female threads that are with seal ring 9.During use, part below the separating joint under the hydraulic pump tail end is unloaded, refill this and helped device, the same with the production of normal throwing pump, produce beginning in its tube of devoting oneself to work, when playing pump, if pump can not play working barrel, the oil casing annular space internal pressure begins to raise, and this pressure is by separating joint and diversion column radially guide hole beyond the Great Wall, affact on the whole cross section of water conservancy diversion plunger, make and cut off pin and cut off, cause the water conservancy diversion plunger to move down, pumping pressure is delivered on the standing valve by separating joint and diversion column radial hole beyond the Great Wall, thereby the whole section that makes pump has become a pump section, promptly playing the pump area has increased by 57% than originally, that is to say, plays pumping pressure and has reduced by 36% than originally, like this, just can easily the down-hole hydraulic pump be tripped out.

The utility model is simple in structure, and is easy to operate, practical, can with the supporting use of various model hydraulic pumps, under the situation that does not influence the hydraulic pump ordinary production, can make pumping pressure reduce by 36%, guarantee that pump normally trips out under system's dry-pressing, be suitable in the oil field and apply.

Accompanying drawing is the utility model general structure sketch.

Below in conjunction with accompanying drawing enforcement of the present utility model is further described.

Separating joint 1 of the present utility model is cylindric, maximum outside diameter φ 58mm, there is the square female thread of the short tooth of SF51mm the upper end, there is M48 * 3mm external screw thread the lower end, be milled with the groove that spanner screws that is used for of two symmetries on the periphery of top, and on groove and place cylindrical, be evenly distributed with 6 φ 5mm radial holes, these 6 holes are communicated with uniform 6 axial bores on the lower end surface respectively, tap 1 inner axis hole has three steps, the minimum diameter phi 20mm of place, and a φ 24 * 12mm circular groove is arranged in this minimum diameter hole, the groove connection therewith of 6 φ 6mm radial holes is arranged on separating joint 1 cylindrical; Positioning dowel 2 is a finished parts; Cut off pin 3 diameters and determine that by calculating the one end is that φ 7mm is cylindrical, the other end is that gradient is the frustoconic shape of 1:16, and there is the positioning hole of a φ 3.5mm top; Water conservancy diversion plunger 4 is a cylindrical member, one diameter phi 28mm round platform is arranged at top, the bottom is a φ 20mm cylinder, there is a φ 10mm axial blind hole in water conservancy diversion plunger 4 upper end edge axle center, on φ 20mm cylinder cylindrical, be furnished with 3 groups of radial holes that are communicated with blind hole, every group uniform 4, its diameter is respectively φ 4mm, φ 6mm, φ 4mm, uniform 3 taperings are the radially inclined hole that is communicated with blind hole of 1:16 on φ 28mm cylinder cylindrical, also have 3 the equally distributed M3 that is communicated with inclined hole * 0.5mm tapped holes on water conservancy diversion joint 4 upper-end surfaces; Seal assembly 5 and baffle ring 6 are the hydraulic pump finished parts; Seal ring 7,9 is the standard seal part; Helped device tailstock 8 cylindrical structures to be 3 grades of step cylndrical surface, smallest circle cylinder external diameter is φ 35mm, and have the seal groove that a size and seal ring 8 match on it, helped device tailstock 8 upper ends that the female thread of M48 * 3mm is arranged, be milled with the groove that spanner screws that is used for of two symmetries on the external cylindrical surface of middle φ 58mm, having helped has a twin-stage step hole in the device tailstock 8; Material of the present utility model is all selected 45 steel for use, and except that positioning dowel 2 with cut off pin 3 do not need to heat-treat, hardness is HB255-285 after all the other each part quenching with Subsequent tempering.

Claims

1, a kind of hydraulic pump that is used for the oil field petroleum production has helped device, it is made up of positioning dowel 2, seal assembly 5, baffle ring 6, seal ring 7, seal ring 9 etc., it is characterized in that, it also by separating joint 1, cut off pin 3, water conservancy diversion plunger 4, tailstock 8 and form, and:

A, separating joint 1 lower end external screw thread and tailstock 8 upper end female connections;

B, cut off pin 3 and be contained in the water conservancy diversion plunger 4 top inclined holes, and by positioning dowel 2 location;

C, water conservancy diversion plunger 4 are inserted in the endoporus of separating joint 1.

2, a kind of hydraulic pump according to claim 1 has helped device, it is characterized in that: separating joint 1 is for cylindric, there is the square female thread of the short tooth of SF the upper end, there is external screw thread the lower end, be evenly distributed with 6 radial holes on the cylindrical of top, these 6 holes are communicated with uniform 6 axial bores on the lower end surface respectively, and tap 1 inner axis hole has three steps, and a circular groove is arranged in the minimum diameter hole, the groove connection therewith of 6 radial holes is arranged on separating joint 1 cylindrical.

3, a kind of hydraulic pump according to claim 1 has helped device, it is characterized in that: water conservancy diversion plunger 4 is cylindrical member, one round platform is arranged at top, the bottom is a cylinder, there is an axial blind hole in water conservancy diversion plunger 4 upper end edge axle center, are furnished with 3 groups of radial holes that are communicated with blind hole on the lower cylindrical cylindrical, every group uniform 4, uniform 3 radially inclined holes that are communicated with blind hole that tapering is arranged on the round platform cylindrical of top also have 3 equally distributed tapped holes that are communicated with inclined hole on water conservancy diversion joint 4 upper-end surfaces.

4, a kind of hydraulic pump according to claim 1 has helped device, it is characterized in that: helped device tailstock 8 cylindrical structures to be 3 grades of step cylndrical surface, had a seal groove on the smallest circle cylinder, helped device tailstock 8 upper ends that female thread is arranged, inside is a twin-stage step hole.