CZ288298B6 - Jet diversion device for injection pump in test state - Google Patents

Abstract

In the present invention there is disclosed a device for diverting the flow a test room of injection pumps. A movable flow deflector (11) is pivotally arranged between the injection jet interceptor and an associated measurement vessel to divert the test oil coming from the interceptor, via at least one oil line, to the tank. The flow deflector (11) and the oil line to the tank form a closed system (27) for the test oil to be fed out. The flow deflector (11) has inlet holes (25) associated with the interceptor and lying under the interceptor in the pivoted in position. The oil line is connected to the flow deflector (11) and, at least in the connection region, is formed as a flexible hose (23). When removing hot test oil between measuring breaks, generation of oil vapors and aerosols is thus substantially reduced.

Description

Device for flow removal in injection pump test room

Technical field

The present invention is based on a device for discharging the injection pump test room, in which a movable flow diverter can be moved between the injectors and the respective measuring vessels to drain the test oil exiting the injectors through at least one oil line into the tank.

BACKGROUND OF THE INVENTION

DE 31 11 870 A1, in which the flow outlet is designed as a simple baffle plate, which can be hinged in the interior of the test chamber by means of two swivel arms and can be moved between two measuring processes inserted between the injector and the corresponding measuring glass. With the instantaneous flow directions, the juxtaposed injector collectors impinge on the obliquely tilted baffle plate from which the test oil flows into the fixed collecting duct, from where the test oil flows through two fixed immobilized tubing, respectively freely, directly along the the rear wall of the cover, into a collecting well formed on the bottom of the cover to pass through the hose lines, etc., into a closed test oil tank located at the bottom of the test room. In many cases, it may be disadvantageous that the hot test oil is fed into the tank through a plurality of open plates with relatively large sprinkling surfaces. Oil vapor and aerosol formation may occur, and the vapors and mists may enter the ambient air without obstruction. This affects working conditions and the environment. In addition, the collecting channel, connected between the baffle plate and the pipe, increases the construction cost of the injection pump test room, which contradicts a space-saving and cost-effective design.

SUMMARY OF THE INVENTION

On the other hand, the device for withdrawing the flow in the injection pump test room with the characteristic points of the main claim according to the invention has the advantage that it significantly reduces the formation of oil vapors and aerosols during the test run. Working and environmental conditions can thus be substantially improved. The removal of warm test oil during pauses between measurements using a closed system will considerably reduce this vapor and mist formation that may occur in open and large trickle areas. In addition, the additional collecting channel is saved, making the design of the device more complete and cost-effective.

Advantageous embodiments and improvements of the apparatus set forth in the main claim are possible due to the measures set forth in the dependent claims. In particular, it is advantageous if the flow duct is designed according to claim 2 as an open-top drain pan which is closed by a lid in which the necessary inlet openings are located. The device can be easily integrated into existing injection pump test facilities. Further advantageous embodiments follow from the remaining claims, the description and the figures.

Overview of the drawings

An exemplary embodiment of the invention is shown in the figures and is explained in more detail in the following description.

Giant. 1 shows, in a simplified representation, a front view of the flow-evacuating device in the injection pump test room.

-1 CZ 288298 B6 (

Giant. 2 shows a plan view of the device in a simplified representation.

Giant. 3 is a simplified cross-sectional view of the apparatus of FIGS.

DETAILED DESCRIPTION OF THE INVENTION

Giant. 1 shows, in a simplified representation, a front elevation of the flow evacuation device 10 as undetermined in the injection pump test room. As the flow duct 11, the device 10 10 at the top has a one-sided drain pan 12, which is closed by a lid 13. The drain pan 12 is substantially in the shape of an isosceles trapezoid, the shorter side of which forms the bottom 14 of the drain pan 12. This open side 15 is closed by a lid 13, which has a cross-sectional shape in the shape of a swallow tail, is slid by means of its clips 16, 17 onto the drain pan 12 and which is attached to the drain pan 12 15 by preloading the clips 16, Γ7 .

As shown in conjunction with the top plan of FIG. 2 and the section of FIG. 3, FIG. 1 illustrates the drain pan 12 at its front sides with flat head screws 18 to the pivot arms 19, with additionally attached retaining joints 21 forming the connection between As shown in more detail in FIG. 1, FIG. 1 shows that at the bottom 14 of the drain 12 there are two outlet ports 22 near the end walls on which a flexible hose is attached by means of hose clips 24. 23.

As can be seen from FIG. 2, inlet 13 is provided in the lid 13 along the longitudinal wall of the drain pan 25, the number of which is determined to correspond to the number of injector retainers or test nozzle holders in the injection pump test room. The size and position of the inlet openings 25 are so selected that the test oil streams emanating from the injectors with the flow directions, simply shown by the arrows 26, can pass through the lid 13 undisturbed and be trapped in the drain pan 12. Test oil trapped in the drain pan 30 12, flows through the outlet orifices 22 and the connected flexible hoses 23 back to an unspecified tank inside the injection pump test room. Thus, the drain pan 12 closed by the lid 13, together with the two drain necks 22 and the connected hoses 23, forms a closed system 27 by means of which the collected oil is returned to the tank. Thus, open plates with large sprinkling surfaces do not have to be used for warm test oil coming from the injection pump. Thus, the warm test oil is directly discharged through the closed system 27 to the test oil tank in the test room during measurement breaks. In this way, the formation of oil vapors and aerosols is minimized, thereby significantly improving working and environmental conditions. In addition, the device is built in a more coherent and cost-effective way, as no additional collecting channel is required. In order to prevent air from passing into the test oil streams 26, 40, it is preferred that the test oil streams entering the drain pan 12 through the inlet orifices 25 impinge obliquely to the flow direction by an inclined longitudinal wall of the drain pan 12.

Due to its integral design, the device 10 can be easily integrated into the existing injection pump test benches and used as hitherto. The drain pan 12 is movably mounted in the interior of the test room by means of the 45 swivel arms 19 and during the measurement process it can be displaced from its original position so that the test oil streams 26 can be captured in an unspecified manner in their respective measuring glasses.

Of course, changes are possible in the exemplary embodiment shown without departing from the inventive idea. Thus, the advantages of the closed system 27 can be retained when the hoses are flexibly formed only in the area of the connection of the outlets, in order to maintain the mobility of the outlet pan 12, and can then be designed as rigid pipe lines towards the tank. It is likewise possible to change the shape of the drain pan 12 and the lid 13, however, as long as the entire system 27 remains closed to itself. While the drain pan 12 and lid 13 are made as 55 aluminum parts, a plastic part construction is also possible.

Claims (5)

PATENT CLAIMS A device for discharging a flow pump in an injection pump test room, wherein a movable flow divider is movable between the injectors and the respective measuring vessels for draining the test oil exiting the injectors with at least one oil line to a tank, characterized in that the test oil being discharged constitutes a flow conduit (11) with an oil pipe into a tank closed system (27), the flow conduit (11) having inlet openings (25) associated with the injectors and lying in the operating position of the drain (11) below the injectors and wherein the oil line is connected to the flow duct (11) and at least in the connection area the oil line is formed as a flexible hose (23). Device according to claim 1, characterized in that the flow diverter (11) is designed as a one-sided drain pan (12), which has at least one drain connection (22) in the bottom and which is closed on its open side (15) a lid (13) in which the inlet openings (25) are formed. Device according to claim 2, characterized in that the lid (13) has a substantially swallow-tail cross-section and, with its retainers (16, 17), is slid and fastened to a drain pan (12) having a substantially trapezoidal cross-section. . Device according to claim 3, characterized in that the drain pan (12) is retained with the lid (13) and guided on two pivoting arms (19) with retaining joints (21). Device according to one of Claims 2 to 4, characterized in that the drain pan (12) has drain ports (22) at its front ends, from which two flexible hoses lead to the tank.