Electro-hydraulic reversing device for hydraulic profile control injection pump
A technology for reversing devices and injection pumps, which is applied to fluid pressure actuators, servo meter circuits, servo motor components, etc. It can solve problems such as difficult maintenance, unstable and unreliable reversing, and achieves convenient purchase and maintenance, and easy search Causes, effects of commutation stabilization
Inactive Publication Date: 2016-10-26
DEZHOU HUAHAI GASOLINEEUM MACHINERY
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Problems solved by technology
[0004] The main purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an electro-hydraulic reversing device for hydraulic profile control injection pumps to solve the problems of unstable and unreliable reversing and difficult maintenance in the prior art.
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[0019] The specific embodiments of the present invention will be further described and illustrated below in conjunction with the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.
[0020] Such as Figure 1 to Figure 2 Shown: an electro-hydraulic reversing device for a hydraulic profile control injection pump, which mainly includes a mud rod 9, a hydraulic cylinder piston rod 7, a travel switch 1, an electro-hydraulic reversing valve, a travel switch fixing frame and a control circuit, and a hydraulic cylinder The end of the piston rod 7 is processed into an internal thread, and the end of the mud rod 9 is processed into an external thread. The hydraulic cylinder piston rod 7 and the mud rod 9 are equipped with an adjustment back nut 8 whose diameter is greater than that of the mud rod. The threaded hole is used to fix the limit switch bracket, and fix the limit switch 1 on the limit switch bracket.
[0021] ...
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The invention belongs to the field of pump injection equipment for oilfield operation and discloses an electro-hydraulic reversing device for a hydraulic profile control injection pump. The electro-hydraulic reversing device mainly comprises mud rods, a hydraulic cylinder piston rod, travel switches, an electro-hydraulic reversing valve, travel switch brackets and a control circuit, and further comprises a reversing valve base, wherein the electro-hydraulic reversing valve is fixed on the electro-hydraulic reversing valve base; a throttle valve is additionally arranged between a reversing valve main body and an electro-hydraulic pilot reversing valve; the electro-hydraulic reversing device further comprises the travel switches which are mounted on the travel switch brackets, and are connected with adjusting back nuts when the hydraulic cylinder piston rod reciprocates; and the control circuit, which is controlled by a circuit board and proximity switches originally, is controlled by a relay and the travel switches and meanwhile is additionally provided with two diodes. The throttle valve is mounted on the electro-hydraulic reversing device, and can reduce impact on an oil circuit during reversing to reduce vibrations; and the original proximity switches are replaced by the travel switches, so that the electro-hydraulic reversing device is more stable and reliable in reversing, has a long service life and a simple structure and is convenient to replace.
Description
technical field [0001] The invention belongs to the technical field of pump injection equipment for oilfield operations, and more specifically relates to an electro-hydraulic reversing device for hydraulic profile control injection pumps. Background technique [0002] TPB series hydraulic profile control injection pump is a special hydraulic reciprocating profile control injection equipment suitable for profile control, water plugging and polymer injection operations. , suitable for various plugging agents currently used in oil fields. Now this equipment has been widely used in profile control and water plugging operations in major oilfields across the country, and has become one of the important equipment used in oilfield secondary and tertiary oil recovery measures. The pump uses the principle of hydraulic transmission to convert the high-speed rotating mechanical energy of the motor into the pressure energy of the hydraulic oil through the constant power variable oil pum...
Claims
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IPC IPC(8): F15B15/20F15B13/04
CPCF15B13/04F15B15/1423F15B2211/7725
Inventor 张维友李洪阳吕宏
Owner DEZHOU HUAHAI GASOLINEEUM MACHINERY