SU1277695A1 - Pump - Google Patents

Description

The invention relates to the field of pump engineering and can be used for pumping liquids in apparatuses using high-intensity optical radiation, for example, in cooling systems for lasers, gas discharge lamps, etc.

The aim of the invention is to increase productivity by reducing energy dissipation.

Figure 1 schematically shows a pre-patched pump; figure 2 - pump with a reflector-5 body; in Fig.Z - a pump with a reflector in the form of an ellipse; figure 4 - pump with electrodes of a discharge lamp placed outside the housing; figure 5 - pump with a discharge lamp located in the casing; figure 6 - pump with a discharge lamp placed at an angle to the target; in Fig. 7 a pump with a target made with a variable cross section; on Fig - pump with a housing made with windows; figure 9 - pump with 15 control unit.

The pump comprises a housing 1 with an inlet 2 and a discharge 3 nozzles and a device for providing unidirectional movement of liquid, an energy source that is 20 made in the form of discharge lamps 4 with electrodes 5, and a device for providing simultaneous movement in the form of valves 6 and 7, while casing 1 is equipped with a light-absorbing target 8, placed .25 inside casing 1. A reflector 9 can be installed on the outside of the casing 1, and the casing 1 is transparent, the cross-section of the reflector 9 can be an ellipse in the pump, 30 vetopogloschayuschaya target 8 is set at one focus of the ellipse, and the discharge lamp - at the other focus. The electrodes 5 of the gas discharge lamp can be installed outside the housing 1, and the pump is equipped with a transparent casing 10, in which the gas discharge lamp 4 is installed, and the casing 10 is connected to the discharge pipe 3. The gas discharge lamp 4 can be placed outside the housing 1 at an angle of 5 40 ° to the axis of the target 8 and 40 serves as a device for unidirectional fluid movement, and the body is made transparent. In the pump, the light-absorbing target 8 can be made with a variable section decreasing to the discharge pipe 45 3 and serve as a device for unidirectional fluid movement, and the housing 1 is made transparent. In the housing longitudinal windows 11 of variable width can be made, decreasing towards the discharge port 3, serving as a device for unidirectional fluid movement. Additional gas discharge lamps 12 and a control unit 13 can be introduced into the pump, with additional 55 discharge lamps 12 installed in the housing 1 in series and connected to the control unit 13. serving as a device for unidirectional fluid movement.

The pump operates as follows.

When pulsed supply of energy from a power source (through discharge capacitors) to a gas discharge lamp 4 (see Fig. 1), a light flux pulse arises, which, passing through the glass of a gas discharge lamp 4 and the pumped liquid (if it is transparent), is released in the form of heat on the inner wall of the housing 1, which is made in the form of a light-absorbing target 8. When pulsed, part of the fluid boils, the pressure increases in the housing 1, which ensures unidirectional movement of the fluid through the valve 7 into the discharge pipe 3 . When the heat supply is stopped, the liquid through the suction pipe 2 and the valve 6 enters the housing 1. The cycle is repeated.

Example. A gas discharge lamp creates a flux intensity of ΙΟ ²¹ W / cm ² with a pulse duration of 10 ³ s (the usual parameters of gas-discharge lamps commercially available from the industry). As target 8, for example, ebonite is selected. They evaluate the heating of the ebonite surface under the action of a flash of such a lamp as

ΔΤ = alt cp Vac t 'where a is the absorption coefficient;

I - flow intensity, W / cm ² ΐ - pulse duration, s, s - specific heat, J / kg, ° C; p - density kg / cm ³ , k - coefficient of thermal diffusivity, cm ² / s.

_AT _ Щ-КУ-ю ³ _______

1380 1.2 · 10 ~ ³ Vl, 2 10 ^{_ 3} · 10 ^_3 ~

- 550 ° C.

The depth of heating of the walls of the casing with such an impact is V / s t = 10 ' ³ cm. In other words, the wall of the casing practically does not have time to warm up, and most of the heat goes to heat up the liquid. This conclusion is essential for comparing the performance of heat pumps with heating the medium through the chamber wall.

With this heating of the surface and when using technical water as the pumped medium, the pressure in the working chamber can reach tens of atmospheres, and the vapor bubble arising under the influence of such a light pulse can reach volumes of several liters.

The use of reflector 9 (see Fig. 2, Fig. 3, Fig. 5) and placement in the foci of the reflector of the lamp 4 and the pump housing allows

to center the light stream on the target 8 of a small area, which allows r to increase the intensity of the stream, and hence the characteristics of the pump as a whole. The execution of the reflector 9 in the form of an ellipse 5 concentrates the entire luminous flux from the lamps 4 on the target 8. This allows the use of light-discharge lamps of relatively low power. In the modification of the pump shown in Fig. 1, the luminous flux enters 10 over a relatively large area, and this increases the requirement to the power of the discharge lamp 4.

To increase the characteristics of the pump above the transparent casing 1, several discharge lamps 4 can be mounted in parallel 15 (see Fig. 2).

The outer parts of the electrodes 5 of the discharge lamps 4 must be isolated from the pumped medium (see Fig. 1) to avoid electrolysis, electro-hydraulic shocks, etc. The installation of the outer parts of the electrodes 5 outside the housing 1 (see figure 4) facilitates the operation of the lamp 5 and simplifies the possibility of its replacement. 25

In those cases where intensive cooling of the lamp 4 itself is necessary, the latter is equipped with a transparent casing 10 (see Fig. 5) and is connected in series with the discharge pipe 3 of the pump. Forced cooling of the lamp 4 increases its life and parameters, and therefore, increases the flow-pressure characteristics of the pump.

The gas discharge lamp 4 can be mounted at an angle of 5 to 40 ° to the axis of the target (see Fig. 6). This let r decpg | in momsr! iocih heat dissipation ιπ ι ·· 4! ΐκψη 8 and the length of the housing i. and payout, ρο; vg..ro; a steam bubble along the housing 1 in the face direction. Such a decision and reject the last mobile dp | _a / _i . _{; β} pump - valves 6 and 7 and dare 1ι- pump life. At angles between the axis of the HPL 4 and the axis of the target 8 a 0 ^{and the} steam bubble is reduced almost symmetrically in different directions and does not allow rejection; ssch from the bypass valves 6 and 7. An angle greater than leads to a sharp decrease in the total light flow inlet about b. n reduces performance

Fulfillment of a statement on 11 o, o o o n o in pr? about the target 8 s are transverse ·. - '‘s · decreasing along the length of the core •• s-: · to about. oppression pipe 3 (see, about ... and the execution of the body with age> 'over the body 1 transparency (see ·: · ιτ.8). for example, longitudinal windows 1' · over ··>; oh width, also contributes to the created! · fishing for the expansion of the rh · - first pu.i.ph along the case 1 in one captive and ·. ·. ·.

When installing sequentially additional discharge lamps 12 in the housing 1, connected to the power supply С'М and capacitors through the control unit 13 (Fig. 9). there is also the city of Omezh-with this valveless pumping. The control unit 13 provides the inclusion of an agora (;. Lzhd in the subsequent) lamp with some s.,:; Building. providing her running ·; at St. a · m <along the entire building 1.

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Claims (9)

1. A PUMP containing a housing with inlet and discharge nozzles and a device for ensuring unidirectional fluid movement, an energy source, characterized in that, in order to increase productivity by reducing energy dissipation, the energy source is made in the form of discharge lamps with electrodes, and the device provides unidirectional movement - in the form of valves, while the housing is equipped with a light-absorbing target located inside the housing. 2. The pump according to claim 1, characterized in that a reflector is installed on the outside of the housing, and the housing is transparent. 3. A pump according to claims 1 and 2, characterized in that the cross section of the reflector is in the form of an ellipse, the light-absorbing target being installed in one focus of the ellipse, and in another focus - an energy source. 4. The pump according to claim 1, characterized in that the electrodes of the discharge lamp are installed outside the housing. 5. The pump according to claims 1 and 2, characterized in that it is provided with a transparent casing in which a gas discharge lamp is installed, and the casing is connected to the discharge pipe. 6. Pump pop 1 and 4. characterized in that the gas discharge lamp is placed outside the housing at an angle of 5-40 ° to the axis of the target and serves as a device for unidirectional fluid movement, and the housing is made transparent. 7. The pump according to claims 1 and 4. characterized in that the light-absorbing target is made with a variable decreasing section to the discharge pipe and serves as a unidirectional movement device. liquids, and the case is made transparent. 8. The pump according to claims 1 and 4, characterized in that the housing is made of longitudinal windows of variable width, decreasing towards the discharge pipe, serving as a device for unidirectional fluid movement. 9. The pump according to claim 1, with the fact that additional gas-dirty lamps and a control unit are introduced into it, while additional gas-discharge lamps are installed in series in the housing and connected to the control unit serving as a device simultaneous fluid movement. 1277695 A1