Maintenance-free multistage combined electric jet pump

Abstract

The invention discloses a maintenance-free multistage combined electric jet pump. The maintenance-free multistage combined electric jet pump comprises a sleeve, emitting electrodes, grounding electrodes, an end support ring and end covers, wherein the sleeve is filled with a dielectric when working, is in a cylindrical shape and is made of organic glass; the emitting electrodes and the grounding electrodes are mounted in the sleeve; the number of pairs of the emitting electrodes and the grounding electrodes can be achieved through combination randomly according to the driving capacity of the pump; the inner diameter of the sleeve closely matches with the outer diameters of the emitting electrodes and the grounding electrodes; the emitting electrodes are combinations; a ring body and an adjusting bolt of each emitting electrode are made of insulating materials; emitting electrode needles are made of stainless steel; one end of each emitting electrode needle is shaped like a tapered needle tip; the emitting electrodes and the grounding electrodes are connected to a high-voltage DC power supply with a voltage level being plus or minus 5 kV-40 kV; and the dielectric is preferably normal pentane, but can also use acetone, cyclohexane or silicone oil.

Description

technical field [0001] The invention relates to a fluid pump, in particular to a device for the controllable flow of liquid dielectric under the driving action of a strong electric field. Background technique [0002] Since the advent of loop heat pipe (Loop Heat Pipe, LHP) and capillary pump loop (Capillary Pump Loop, CPL), it has been widely used in industrial sectors and people's lives, especially in aerospace, military and other high-end technology applications Received good results. A loop heat pipe typically consists of an evaporator, condenser, liquid receiver, and vapor and liquid lines. The working principle of this technology (LHP) is: a heat load is applied to the evaporator, the liquid medium evaporates on the outer surface of the capillary core of the evaporator, and the generated vapor flows out from the vapor channel into the vapor pipeline, and then enters the condenser to condense into liquid and supercool , the reflux liquid enters the liquid main channel...

AI Technical Summary

Problems solved by technology

[0003] Although the current loop heat pipe technology is widely used, there are still some imperfect problems: the start-up problem of the loop heat pipe and the instability of operation

The start-up problem mainly involves the failure to start normally. For example, the heat control system of my country’s Fengyun-1 satellite uses a loop heat pipe provided by a certain country. Two sets of them failed to start and operate normally during the space flight. control object temperature rise

The start-up problem also involves the evaporator temperature being too high at start-up, even exceeding the temperature range allowed by the instrument

There are two solutions, that is, auxiliary heating of the evaporator or cooling of the liquid receiver, but both of these methods require additional large energy consumption and a complex control system, which destroys the automatic working characteristics of the loop heat pipe itself

Second, the problem of instability

[0004] It is not the best solution to use a conventional mechanical rotary pump to provide auxiliary power for the pipeline. First, it destroys the characteristics of the loop heat pipe itself without mechanical power components.

At the same time, due to the unfavorable factors such as the complex structure of the rotary pump body and the difficulty of maintaining and replacing parts, the scope of use of the loop heat pipe is limited.

Images