CN218646403U

CN218646403U - Non-contact type liquid detection dry burning prevention sensor

Info

Publication number: CN218646403U
Application number: CN202222755309.4U
Authority: CN
Inventors: 王裕溪
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-03-17
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a non-contact liquid detects prevents dry combustion method sensor, prevent dry combustion method sensor including sense tube and cover on the sense tube periphery, prevent dry combustion method sensor including surrounding support, electrode group and circuit board, it is provided with the first through-hole that the sense tube runs through on the support to surround, be provided with the cavity in the support to surround, be provided with the circuit board in the cavity, be provided with the electrode group between surrounding support and the sense tube in the first through-hole, the electrode group includes two electrodes, the sense tube is lived in two electrode laminatings, the electrode carries out the electricity with the circuit board and is connected, install temperature-detecting device on the surrounding support, the temperature-detecting device laminating lives the surrounding support, temperature-detecting device carries out the electricity with the circuit board and is connected, can contactless liquid just can detect the water level, also can detect the concrete temperature of water, simple structure, simple to operate.

Description

Non-contact type liquid detection dry-burning-prevention sensor

The technical field is as follows:

the utility model relates to a sensor field especially relates to non-contact liquid detects prevents dry combustion method sensor.

Background art:

the liquid level detection mode is divided into contact type liquid level detection and non-contact type liquid level detection. Contact level sensing, i.e. the sensor is in contact with the liquid to be sensed, is relatively simple to implement and is inserted directly into the liquid by means of a conductive probe or conductive foil. By utilizing the conductivity of the liquid, the electrode signal will also change accordingly. When the electrodes are electrified in the liquid, electrolytic chemical reaction can occur, oxygen can be generated during water electrolysis, and bacteria can be easily bred for a long time. At the same time, the conductive electrode will also corrode, generating a large amount of metal ions in the liquid. Although the ability to accurately measure the liquid level can be improved by adding electrodes, structures are also vulnerable to lightning strikes if they are to be fitted with anti-tracking devices. In addition, the contact type liquid level detection is not suitable for the liquid level detection of various acid-base, inflammable and high-risk liquids. Therefore, people are beginning to turn to research on non-contact liquid level detection.

The existing non-contact liquid level detection can only sense the detection liquid level of water, cannot detect the temperature of the water, cannot confirm the temperature of the water, has single function, and can not confirm the temperature of the water only by confirming the height of the water level so as to control whether the heating device is started or not.

The utility model has the following contents:

based on this, the utility model discloses lie in overcoming prior art's defect, provide non-contact liquid and detect and prevent dry combustion method sensor, except can detecting water, also can detect the concrete temperature of water, simple structure, it is with low costs, simple to operate.

The purpose of the utility model is realized by the following technical scheme.

The utility model aims at providing a non-contact liquid detects prevents dry combustion method sensor, prevent dry combustion method sensor including sense tube and cover on the sense tube periphery, prevent dry combustion method sensor including surrounding support, electrode group and circuit board, it is provided with the first through-hole that the sense tube runs through on the support to surround, be provided with the cavity in the support to surround, be provided with the circuit board in the cavity, be provided with the electrode group between surrounding support and the sense tube in the first through-hole, the electrode group includes two electrodes, the sense tube is lived in two electrode laminatings, the electrode carries out the electricity with the circuit board and is connected, install temperature-detecting device on the surrounding support, the surrounding support is lived in the laminating of temperature-detecting device, temperature-detecting device carries out the electricity with the circuit board and is connected.

The surrounding support comprises a support main part and a U-shaped buckle, and the U-shaped buckle is buckled with the support main part for fixing.

The aforesaid U-shaped is detained the inboard and is provided with a plurality of bumps, support main part both sides are provided with the shrinkage pool, when the U-shaped detained lock support main part, bump card goes into the shrinkage pool and fixes.

And an end cover is arranged on the cavity surrounding the bracket for covering.

The dry burning prevention sensors are arranged in two numbers and are respectively arranged at the front end and the rear end of the detection tube.

The bottom of the detection tube is connected with a water inlet tube, and the top of the detection tube is provided with an air outlet tube.

The water inlet pipe is connected with a liquid container.

Compared with the prior art, the utility model, following effect has:

1) The utility model discloses a non-contact liquid detects prevents dry combustion method sensor, prevent dry combustion method sensor including sense tube and cover on the sense tube periphery, prevent dry combustion method sensor including surrounding support, electrode group and circuit board, it is provided with the first through-hole that the sense tube runs through on the support to surround, be provided with the cavity in the support to surround, be provided with the circuit board in the cavity, be provided with the electrode group between surrounding support and the sense tube in the first through-hole, the electrode group includes two electrodes, two electrode laminating live the sense tube, the electrode carries out the electricity with the circuit board and is connected, install temperature-detecting device on the surrounding support, temperature-detecting device laminates and live the surrounding support, temperature-detecting device carries out the electricity with the circuit board and is connected, can not contact liquid just can detect the water level, also can detect the concrete temperature of water, simple structure, simple to operate.

2) Other advantages of the present invention are described in detail in the examples section of this specification.

Description of the drawings:

fig. 1 is a perspective view of a non-contact liquid detection dry-burning prevention sensor provided by an embodiment of the present invention;

fig. 2 is a cross-sectional view of a non-contact liquid detection dry-burning prevention sensor provided by the embodiment of the invention;

fig. 3 is a cross-sectional view of a non-contact liquid detection dry-burning prevention sensor provided by the embodiment of the present invention;

fig. 4 is an exploded view of a non-contact liquid detection dry-burning prevention sensor provided by the embodiment of the present invention;

fig. 5 is an exploded view of a non-contact liquid detection dry-burning prevention sensor according to an embodiment of the present invention;

fig. 6 is a front view of the non-contact liquid detection dry-heating prevention sensor according to the embodiment of the present invention connected to the liquid container 6.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.

As shown in fig. 1 to 6, the embodiment provides a non-contact type liquid detection dry-heating prevention sensor, which includes a detection tube 1 and a dry-heating prevention sensor 2 sleeved on the periphery of the detection tube 1, the dry-heating prevention sensor 2 includes a surrounding support 21, an electrode group 22 and a circuit board 23, a first through hole 201 is provided on the surrounding support 21, the surrounding support 21 is internally provided with a cavity, the circuit board 23 is arranged in the cavity, the electrode group 22 is arranged between the surrounding support 21 and the detection tube 1 in the first through hole 201, the electrode group 22 includes two electrodes 221, the two electrodes 221 are attached to the detection tube 1, the electrodes 221 are electrically connected to the circuit board 23, a temperature detection device 5 is installed on the surrounding support 21, the temperature detection device 5 is attached to the surrounding support 21, the temperature detection device 5 is electrically connected to the circuit board 23, so that a water level can be detected without contacting liquid, a specific temperature of water can also be detected, the structure is simple, and the installation is convenient.

The electrode set 22 actually forms a capacitor with the detector tube 1. The circuit board 23 applies a pulsed dc voltage to the electrode group 22, and the two electrodes 221 have a potential difference, thereby forming a stable electric field between the two electrodes 221. The on and off states of the pulsed dc current alternate. In the power-on state, the capacitor is actually charged due to the characteristic of isolating direct current and direct current. When the capacitor is in the power-on state, the capacitor discharges, and the capacitance value can be judged according to the discharge time of the capacitor. When the detecting tube 1 is empty, the inner space thereof is filled with air.

Air constitutes the dielectric of the capacitor, in which case a base capacitance value C0 can be measured. When a liquid is present in the detector tube 1, the liquid may form part of the dielectric of the capacitor, and a capacitance value C1 may be measured. Since the dielectric constants of the liquid and the air are different, C1 and C0 are also different, and the capacitance difference Δ C is obtained by subtracting the two, and Δ C = C1-C0, thereby the liquid level of the liquid in the detection tube 1 can be obtained. The capacitance difference deltaC is basically in a linear relation with the liquid level of the liquid in the detection pipe 1, so that the liquid level can be monitored in real time.

Further, the surrounding bracket 21 comprises a bracket main part 211 and a U-shaped buckle 212, the U-shaped buckle 212 is used for fastening the bracket main part 211, a plurality of convex points 213 are arranged on the inner side of the U-shaped buckle 212, concave holes 214 are arranged on two sides of the bracket main part 211, when the U-shaped buckle 212 is used for fastening the bracket main part 211, the convex points 213 are clamped into the concave holes 214 for fastening, the buckle mode is more convenient to install,

further, an end cover 215 is disposed on the cavity surrounding the bracket 21 for covering. The circuit board 23 is arranged in the cavity, and the end cover 215 is used for covering, so that the dismounting is simple and the installation is convenient.

Furthermore, the dry burning prevention sensors 2 are arranged in two positions, which are respectively arranged at the front end and the rear end of the detection pipe 1, and can be arranged according to the dry burning prevention sensors 2, when the water level is lower than the lower dry burning prevention sensors 2, the water adding can be started, when the water level reaches the upper dry burning prevention sensors 2, the water level is suspended, and when the water temperature is sensed by the temperature sensor to be lower than a set value, the heating device is started.

Further, the water inlet pipe 101 is connected to the liquid container 6, and water inside the liquid container 6 is connected to the water inlet pipe 101, thereby detecting the water level inside the liquid container 6.

Further, the bottom of detecting tube 1 is connected with inlet tube 101, and inlet tube 101 is connected with outside water storage tank, and the water level keeps an equal level with outside water storage tank, the top of detecting tube 1 is provided with outlet duct 102 for get rid of the air of detecting tube 1, make detecting tube 1 keep an equal level with outside water storage tank and provide the replacement of air.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.

Claims

1. Non-contact liquid detects prevents dry combustion method sensor, including detecting tube (1) and cover prevent dry combustion method sensor (2) on detecting tube (1) periphery, its characterized in that: prevent dry combustion method sensor (2) including surrounding support (21), electrode group (22) and circuit board (23), surround first through-hole (201) that is provided with the test tube on support (21) and runs through, be provided with the cavity in surrounding support (21), be provided with circuit board (23) in the cavity, it is provided with electrode group (22) to surround between support (21) and test tube (1) in first through-hole (201), electrode group (22) include two electrodes (221), test tube (1) is laminated in two electrodes (221), electrode (221) are connected with circuit board (23) electricity, surround and install temperature-detecting device (5) on support (21), temperature-detecting device (5) are laminated and are surrounded support (21), temperature-detecting device (5) are connected with circuit board (23) electricity.

2. The non-contact liquid detection dry-burning prevention sensor according to claim 1, wherein: the surrounding support (21) comprises a support main part (211) and a U-shaped buckle (212), and the U-shaped buckle (212) is buckled with the support main part (211) for fixing.

3. The non-contact liquid detection dry-burning prevention sensor according to claim 2, wherein: u-shaped detains (212) inboard and is provided with a plurality of bumps (213), support main part (211) both sides are provided with shrinkage pool (214), when U-shaped detained (212) lock support main part (211), bump (213) card is gone into in shrinkage pool (214) and is fixed.

4. The non-contact liquid detection dry-burning prevention sensor according to claim 1, wherein: an end cover (215) is arranged on the cavity surrounding the bracket (21) for covering.

5. The non-contact liquid detection dry-burning prevention sensor according to claim 1, wherein: the dry burning prevention sensors (2) are arranged in two numbers and are respectively arranged at the front end and the rear end of the detection tube (1).

6. The non-contact liquid detection dry-burning prevention sensor according to claim 1, wherein: the bottom of the detection tube (1) is connected with a water inlet tube (101), and the top of the detection tube (1) is provided with a gas outlet tube (102).

7. The non-contact liquid detection dry-burning prevention sensor according to claim 6, wherein: the water inlet pipe (101) is connected with a liquid container (6).