CN202789544U - Oil level control system and screw compressor unit - Google Patents

Abstract

The utility model discloses an oil level control system and screw compressor unit. Wherein, this oil level control system includes: the oil separator comprises an oil separator, a liquid level monitoring device and a compressor control main board, wherein the liquid level monitoring device is arranged on the oil separator, the liquid level monitoring device monitors the oil level height in the oil separator, feeds an oil level height signal back to the compressor control main board, and controls the running state of a screw compressor unit according to the oil level height signal. Through the utility model discloses, can real-time supervision oil level height, then carry out the running state control to the compressor according to this oil level height, solved among the prior art the great screw compressor of reply refrigeration capacity and taken and add excessive oil at the oil separator, and if oil piping system designs badly probably lead to the technical problem of compressor damage, realized the technological effect of reasonable control compressor operation conditions.

Description

Oil level control system and helical-lobe compressor unit

Technical field

The utility model relates to compressor field, in particular to a kind of oil level control system and helical-lobe compressor unit.

Background technique

The major function of lubricant oil is lubricated, cooling and capacity regulating in the compressor of helical-lobe compressor unit, and oil supply system whether normal is directly connected to the working life of compressor and the normal operation of whole refrigeration system.At present, the helical-lobe compressor unit is because its external oil separator volume is larger, fuel delivery in order to ensure compressor, generally all can add excessive oil, fuel system adopts oil pump feed mostly, and checking whether oil mass is sufficient, common way is to be observed by the liquid-sighting glass that is arranged on the oil separator by personnel.

Yet such way has increased operating cost on the one hand, in addition on the one hand, if the design of the oil-way system of compressor own is bad, may cause the oil mass in the oil separator to can not get effective monitoring, if namely gradually reduce to the fuel delivery of compressor, when serious, may make compressor damage.

The model utility content

The purpose of this utility model is to provide a kind of oil level control system for the helical-lobe compressor unit and helical-lobe compressor unit, can be by being arranged at the level monitoring device on the oil separator, the level height signal of timely monitor oil separator, and with the level height signal feed back to the compressor control mainboard, the compressor control mainboard is according to the compressor behavior of level height SC sigmal control helical-lobe compressor unit.

To achieve these goals, according to an aspect of the present utility model, a kind of helical-lobe compressor unit oil level control system is provided, this oil level control system comprises: oil separator, level monitoring device and compressor control mainboard, level monitoring device is arranged on the oil separator, level height in the level monitoring device monitoring oil separator, and with the level height signal feed back to the compressor control mainboard, the compressor control mainboard is according to the compressor behavior of level height SC sigmal control helical-lobe compressor unit.

Further, oil separator comprises the oil-collecting bag, and level monitoring device is arranged on oil-collecting and wraps, the level height in the level monitoring device monitoring oil-collecting bag.

Further, compressor control mainboard and level monitoring device coupling are used for receiving and processing the level height signal that level monitoring device monitors.

Further, level monitoring device is oil level switch.

Further, oil level switch is arranged on the bottom of oil-collecting bag.

Model utility the utility model also provides a kind of helical-lobe compressor unit, and the helical-lobe compressor unit comprises helical-lobe compressor and aforesaid oil level control system.

Detect level height signal in the oil separator by level monitoring device, and this level height signal feed back to compressor control mainboard processed, the compressor control mainboard is according to the level height signal, the compressor behavior of control helical-lobe compressor unit, like this can round-the-clock automatic monitoring compressor oil level situation, avoid because of the undesired problem of oil circuit design compressor oil-supplying bad or that other artificial origins cause.

Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.The below is described in further detail the utility model with reference to figure.

Description of drawings

Figure of description is used to provide further understanding of the present utility model, consists of the application's a part, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 shows the utility model embodiment's opening type helical-lobe compressor machine set system schematic representation;

Fig. 2 shows oil separator and the level monitoring device relative position schematic representation of the utility model embodiment's opening type helical-lobe compressor unit; And

Fig. 3 shows the oil level controlling method principle flow chart of the utility model embodiment's helical-lobe compressor unit.

Embodiment

Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.

Referring to Fig. 1, according to helical-lobe compressor unit of the present utility model, comprising: helical-lobe compressor 1,motor 2,compressor control mainboard 3, oil separator 4,level monitoring device 5,oil cooler 6, oily coarse-grain filtering device 7, oil pump 8, one-way valve 9 and olein filter 10.Wherein, the oil level control system comprises oil separator 4,level monitoring device 5 and compressor control mainboard 3.Compressor control mainboard 3 links to each other withlevel monitoring device 5, to receive and to calculate the level height signal fromlevel monitoring device 5, link to each other with compressorelectric motor 2 simultaneously, by the compressor behavior control signal that calculatesmotor 2 is controlled, thereby reached the purpose that control helical-lobe compressor 1 moves.

Referring to Fig. 2, according to oil separator 4 of the present utility model, comprise oil-collecting bag 11,oil separator housing 13,oil outlet 14 and liquid-sighting glass.Describedlevel monitoring device 5 one terminates at oil-collectingbag 11 places of oil separator 4, and the other end is electrically connected withcompressor control mainboard 3.

Referring to Fig. 3, the oil level of the above embodiment's of the utility model SCREW COMPRESSOR is controlled as follows

In the helical-lobe compressor unit running process, be arranged at thelevel monitoring device 5 monitoring level height on the oil-collectingbag 11 of oil separator 4.Level monitoring device 5 with the level height signal feed back to compressor control mainboard 3.Describedcompressor control mainboard 3 calculates according to the level height signal that receives, when this level height signal is lower than oil separator level height predefined value, thencompressor control mainboard 3 draw compressor shutdown helical-lobe compressor running state control signal, make compressor shutdown thereby send instruction; When this level height is higher than or equals predefined value, thencompressor control mainboard 3 draws compressor 1 and continues the helical-lobe compressor running state control signal of operation, thereby makes compressor 1 continue operation.Wherein, according to the helical-lobe compressor unit of different refrigerating capacities, need the different oil separator of configuration, for different oil separators, determine level height predefined value separately.

As can be seen from the above description, the utility model the above embodiments have realized following technique effect:

Helical-lobe compressor unit level height can feed back to the compressor mainboard by level monitoring device in good time; the compressor mainboard calculates the compressor behavior control signal; realized the round-the-clock monitoring of unit level height; even the oil circuit design of unit own is bad; also can ensure that compressor is in normal running state or outage state by this oil level control system, and the personnel that need not manually observe level height from the oil separator liquid-sighting glass.

The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (6)

1. oil level control system that is used for the helical-lobe compressor unit, it is characterized in that, described oil level control system comprises: oil separator, level monitoring device and compressor control mainboard, described level monitoring device is arranged on the described oil separator, level height in the described level monitoring device monitoring oil separator, and with the level height signal feed back to described compressor control mainboard, described compressor control mainboard is according to the compressor behavior of the described helical-lobe compressor unit of described level height SC sigmal control.

2. oil level control system according to claim 1 is characterized in that, described oil separator comprises the oil-collecting bag, and described level monitoring device is arranged on described oil-collecting and wraps.

3. oil level control system according to claim 1 and 2 is characterized in that, the coupling of described compressor control mainboard and described level monitoring device, the described level height signal that monitors for the treatment of described level monitoring device.

4. oil level control system according to claim 3 is characterized in that, described level monitoring device is oil level switch.

5. oil level control system according to claim 4 is characterized in that, described oil level switch is arranged on the bottom of described oil-collecting bag.

6. a helical-lobe compressor unit is characterized in that, described helical-lobe compressor unit comprises helical-lobe compressor and each described oil level control system in 5 according to claim 1.

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