CN2433607Y

CN2433607Y - Liquid level positioning measuring device

Info

Publication number: CN2433607Y
Application number: CN 00225058
Authority: CN
Inventors: 沈昭涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-20
Filing date: 2000-06-20
Publication date: 2001-06-06
Anticipated expiration: 2010-06-20

Abstract

The utility model relates to a liquid level positioning and detection device which comprises a pipeline communicated with a detected container, a liquid level sensor and a detection cup, wherein the detection cup is communicated with the pipeline through a reset valve at the bottom of the detection cup; the top of the detection cup is provided with a cup cover; the sensor is fixed on the cup cover. The utility model has the advantage of simple structure, and the limit of installation position is little; the utility model can accurately detect the liquid level in the container so as to meet the need of automatic control.

Description

The liquid level locating and detecting device

The utility model relates to liquid level detection device, particularly relates to a kind of liquid level locating and detecting device.

For whether the liquid level in the detection receptacle reaches a certain determined value, particularly in order to reach certain automatically during the control purpose, the way that is now adopted is the appropriate location opening sampling on container, by the sensor liquid level, or with sensor be directly installed on a certain in the container must the position.But some container sampling spot opening is very difficult, perhaps only is confined to a certain position, and the inside of its container does not allow to take yet, and for example at this moment centrifugal pump will detect its inner liquid level and just compare difficulty.

The purpose of this utility model provides a kind of liquid level detection device, it is simple in structure, can be installed in fixed-point liquid level in container and following any position easily, perhaps be installed in easily in the input or output channel of container, and can detect more exactly whether liquid level reaches a certain determined value in the container, to satisfy the needs of control automatically.

The purpose of this utility model is achieved in that described device comprises a touch sensor, a pipeline that is communicated with detected container, it is characterized in that having on the described pick-up unit base one to detect cup, detecting cup is communicated with pipeline in the base by micrometering valve, detect the cup top and comprise a bowl cover, bowl cover and cup are fixed with screw thread, and touch sensor is installed on the bowl cover.

In one embodiment, detect cup and described device pedestal with being threaded, the centre is added with packing washer, the spool of described micrometering valve is a screw rod, be installed in the cup bottom, the one end is taper, tapering and size and ducted connected entrance size adapt, screw rod and connected entrance are on same axis, and base top has a groove, and connected entrance is in groove, this groove forms a cavity with the bottom surface of cup, the cup bottom has a hole at least, and cavity is communicated with the detection cup, and the gap of screw rod cone face and connected entrance can be regulated.

In another embodiment, the pipeline in the pick-up unit base is the bilateral pipeline, and an end is the input port, and the other end is a delivery outlet, and this device serial connection inputs or outputs on the pipeline container, solve on the container can not the opening sampling problem.

Whether to reach a certain definite liquid level right for liquid level in detection receptacle, adopts this device, not the restriction of receptor sampling spot.When check point is lower than fixed-point liquid level in container, detecting cup is hermetic seal with bowl cover, this moment can the inspection measuring point and fixed-point liquid level between pressure reduction, determine the position of sensor point in detecting cup according to equation of gaseous state PV=nRT, this moment micrometering valve effect: the one, eliminate dynamic differential pressure; The 2nd, play time-lag action.When check point is equal to or higher than container fixed point and crosses, furtherly, when device is installed on the input channel of container top, detect in the cup and be communicated with outside atmosphere by bowl cover, when the aperture of micrometering valve is a certain determined value, it is proportional to detect cup liquid level rise time and pipeline liquid flow velocity, thereby regulates the micrometering valve aperture, can determine that tank fill level rises to the time of determined value.

Below in conjunction with accompanying drawing embodiment of the present utility model is described:

Fig. 1 is the utility model cut-open view;

Fig. 2 is the cut-open view of an embodiment.

Among the figure: 1-detects cup; The 2-touch sensor; The 3-base; 4-pipeline input port (pipeline); The 5-micrometering valve; The 6-connected entrance; 7-detects bowl cover; The 8-pipe outlet.

This embodiment detects the pick-up unit that the centrifugal pump diversion is completely denied, as shown in Figure 2, pipe outlet 8 is communicated with the water pump water inlet, entrance 4 is communicated with aqueduct, the top of base 3 has a connected entrance 6, groove is communicated with pipeline, this groove forms a cavity with the bottom surface that detects cup 1, at least have an aperture in the bottom of detecting cup 1, cavity is communicated with detection cup 1, along the axis direction of connected entrance 6 screw rod 5 is installed, screw rod 5 one ends are cone, touch sensor is installed on the bowl cover, detect in the cup 1 and is communicated with outside atmosphere by bowl cover 7, when in the water pump when anhydrous, also anhydrous in the detection glass, when aqueduct send water to water pump, water enters cavity by connected entrance 6, and enters the detection cup by detecting cup 1 bottom aperture, and adjusting screw(rod) is that scalable enters flow and the time of detecting water in the cup, make when water pump water is full, detect cup 1 interior water level and contact with sensor.Cavity not only can play communication with detection cup and pipeline, the pressure surge of the conduit pipe of can also decaying.

Claims

1, a kind of locating and detecting device that crosses, it comprises a pipeline that is communicated with detected container [4], a liquid level sensor [2], it is characterized in that: have one to detect cup [1] on this pick-up unit base [3], in the bottom of detecting cup [1] one micrometering valve [5] is installed, by micrometering valve detection cup [1] is communicated with pipeline [4], detecting a cup top has a bowl cover [7], and sensor [2] is fixed on the bowl cover [7].

2, pick-up unit as claimed in claim 1 is characterized in that described detection cup [1] and pick-up unit base [3] with being threaded, and the centre is added with packing washer.

3, pick-up unit as claimed in claim 1, it is characterized in that described pipeline is the bilateral pipe, an end is pipeline input port [4], and an end is pipeline delivery outlet [8], the input port of described bilateral pipe [4] is 90 °～180 ° with delivery outlet [8] axis angle, best results in the time of 180 °.

4, as claim 2 or the described pick-up unit of claim 3, the spool that it is characterized in that described micrometering valve is a screw rod, be installed in the bottom of detecting cup [1], the one end is taper, connected entrance [6] on its tapering and size and the pipeline adapts, screw rod and connected entrance [6] are on same axis, the top of base [3] has a groove, connected entrance [6] is in groove, this groove forms a cavity below the bottom of detecting cup [1], the cup bottom has an aperture at least, and cavity is communicated with detecting glass [1], and the gap of the cone face of screw rod and connected entrance [6] can be regulated.