Self-tightening sealing and stress testing device for self-enhancing of ultrahigh-pressure pump head body

Abstract

The invention relates to a self-tightening sealing and stress testing device for self-enhancing of an ultrahigh-pressure pump head body, belonging to the technical field of self-enhancing of a pump head body of an ultrahigh-pressure container. The self-tightening sealing and stress testing device comprises an ultrahigh-pressure pump head body, a horizontal sealed taper rod, a signal lead-out seal taper, a horizontally sealed adjusting rod, an O-shaped seal ring, a signal lead-out rod, an organic glass sealed taper ring, quick-plugging joints, high-strength enameled wires, a strain gauge and a wiring transition plate. All sealing surfaces of the device adopt taper surface hard sealing, the higher the hydraulic pressure in the inner cavity of the pump head body is, the larger the pressure on the sealing surfaces is, and the reliability of sealing under ultrahigh pressure can be guaranteed; in assembling, the sealing of the sealing surfaces in low-pressure or non-pressure state can be controlled by thread pretightening force. The self-tightening sealing and stress testing device has the characteristics of being convenient to install, and convenient and fast to wire. According to the device, the difficulty in testing the stress of the container wall by leading out a wire from the ultrahigh-pressure sealed container can be solved by adopting the combined use of the organic glass sealed taper ring, the O-shaped seal ring and the wire lead-out rod.

Description

technical field [0001] The invention relates to a self-tightening seal and stress testing device for self-reinforcement of an ultra-high pressure pump head body, belonging to the technical field of self-reinforcement of the pump head body of an ultra-high pressure vessel. Background technique [0002] In oil and natural gas extraction, the pores between oil and gas wells and oil and gas layers are underdeveloped or blocked, which will seriously affect the production of oil and gas wells. Therefore, it is necessary to artificially improve the physical structure of oil and gas layers, expand, extend, and dredge formation pores, reduce oil and gas flow resistance, and improve formation permeability. Practice has proved that the fracturing process is one of the most effective measures for this purpose. The most important equipment for implementing fracturing operations is the fracturing pump, and the pump head body of the fracturing pump is an expensive and vulnerable part. Th...

AI Technical Summary

Problems solved by technology

On the one hand, since the self-reinforcement process of the pump head body is performed after the inner cavity has been basically formed, the sealing method, pressure-bearing area and deformation area are limited, and it is difficult to achieve sealing and pressurization in a convenient, safe and reliable manner. , and can minimize the deformation of the pump head body; on the other hand, during the self-enhancing pressurization process of the pump head body, the stress change and residual stress value in the area of ​​the intersecting line on the inner surface of the cavity are important data. It is very difficult to transmit the stress value on the inner surface of the cavity to the outside of the pump head

The above two technical problems limit the application of self-reinforcing technology on the pump head body

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