CN220751286U - Multi-point liquid level measuring device - Google Patents

Abstract

The utility model provides a multipoint liquid level measuring device which comprises a plurality of liquid level measuring sensing pieces, a liquid level measuring module, a data acquisition module and a power supply, wherein each liquid level measuring sensing piece is arranged in a corresponding liquid flow pipeline, and each liquid level measuring sensing piece is sequentially arranged in the liquid flow pipeline which is adjacently arranged; each liquid level measurement sensing piece is connected to a liquid level measurement module, and the liquid level measurement module is used for measuring liquid level information in a liquid flow pipeline sensed by the liquid level measurement sensing pieces; the liquid level measuring module, the data acquisition module and the power supply are connected in sequence, the data acquisition module is used for receiving output information of the liquid level measuring module, and the power supply provides electric energy for the multipoint liquid level measuring device. The multipoint liquid level measuring device has the advantages of less wiring, small volume, high precision and convenient installation.

Description

Multi-point liquid level measuring device

Technical Field

The utility model mainly relates to the technical field of liquid or liquid level measuring equipment, in particular to a multipoint liquid level measuring device.

Background

An energy storage device is a fairly common electronic device in the industry. Generally, under the condition of stable power supply at ordinary times, the energy storage device can charge the storage battery in the device with external power, and when the power supply source is lost or emergency such as accidental power failure occurs, the power stored in the storage battery is discharged for emergency treatment of on-line computers, machines and other devices, so as to avoid serious economic loss caused by the loss of power supply. The energy storage equipment can store electric energy, releases the electric energy when needed, and the energy storage cabinet is an important component in the battery energy storage system, and a plurality of battery modules are arranged in the energy storage cabinet, and the battery modules are placed on the battery rack, so that heat can be emitted when the battery modules output the electric energy outwards, if the heat can not be emitted in time, irreversible reaction can be generated in the battery, the whole service performance of the energy storage cabinet is reduced, the service life of the battery is reduced, and if the heat is too high, the fire phenomenon can even be caused.

The common cooling mode of the energy storage cabinet is natural cooling or air cooling, the natural cooling has no cooling measure, the natural cooling is carried out by totally depending on the external environment, and the cooling efficiency is extremely low. The air cooling is influenced by the wind field, so that the air can be blown to the local part and the surface, the temperature of the local part and the surface is reduced, and the problems of the whole temperature and the temperature difference cannot be solved. In the prior art, a built-in fan is generally used for cooling the energy storage cabinet, the fan blades rotate at a high speed to enable airflow around the battery rack to flow, and the airflow in the energy storage cabinet is contacted with external airflow through an internal air outlet, so that heat is dissipated in a heat conduction mode, and the effect of dissipating heat of the battery module is achieved. The air cooling is mainly to exchange energy between the cooled medium and forced convection cold air by circulating in the heat exchange main body, so as to achieve the effect of cooling.

At present, the development of the energy storage box body gradually has the trend of replacing air cooling by liquid cooling, each battery pack (pack) in the energy storage cabinet is provided with a liquid inlet pipe and a liquid outlet pipe which are connected with liquid cooling equipment, and the liquid inlet pipe and the liquid outlet pipe in the energy storage cabinet are used for calculating at least hundreds according to the quantity of the battery packs. The hundred pipelines are connected to the main pipeline by structural members, and in the using process, falling of certain pipelines caused by pressure cannot be avoided, and after falling, liquid cooling circulation cannot form a loop and equipment is required to be shut down for maintenance. If the liquid level detection device can detect whether liquid exists in each pipeline in real time, the fault position can be judged at the first time, and obstacle removal can be performed in the shortest time.

Currently, a liquid level sensor is often used to detect whether liquid is present in a pipeline. The liquid level sensor on the market is various, including capacitanc liquid level switch, photoelectric type liquid level switch, ultrasonic wave formula liquid level switch etc., and current sensor has following not enough: 1) The capacitive liquid level switch in the market can only measure one point, has poor anti-interference performance, and at least needs to be connected with three wires; 2) The photoelectric sensor has a slightly larger volume than the capacitance type sensor, needs to be installed on a pipeline through holes, belongs to contact type measurement, and needs at least three wires; 3) The ultrasonic liquid level switch has large volume and high cost, and the installation environment is not suitable for the energy storage cabinet.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a multipoint liquid level measuring device which has the advantages of less wiring, small volume, high precision and convenient installation.

In order to solve the above technical problems, the present utility model provides a multipoint liquid level measuring device, including: a plurality of liquid level measurement sensing members; each liquid level measurement sensing element is arranged in a corresponding liquid flow pipeline, and each liquid level measurement sensing element is sequentially arranged in the liquid flow pipeline which is adjacently arranged; a liquid level measurement module; each liquid level measurement sensing piece is connected to the liquid level measurement module in a common mode, and the liquid level measurement module is used for measuring liquid level information in the liquid flow pipeline sensed by the liquid level measurement sensing pieces; the system also comprises a data acquisition module and a power supply; the liquid level measuring module, the data acquisition module and the power supply are connected in sequence, the data acquisition module is used for receiving the output information of the liquid level measuring module, and the power supply provides electric energy for the multipoint liquid level measuring device.

Optionally, the liquid level measurement sensor is a liquid level sensing metal sheet.

Optionally, the number of the liquid level measuring sensors is 8.

Optionally, the liquid level measurement module adopts an IC-VK36W series circuit.

Optionally, the output current of the power supply is between 4 and 20 mA.

Alternatively, the power supply employs a current loop transmitter model number XTR 116.

Optionally, the system further comprises a communication module; the communication module is connected to the data acquisition module and is used for sending acquired current data.

Optionally, the communication module adopts an RS485 communication mode.

Optionally, a connecting line between the liquid level measurement module and the data acquisition module adopts an I2C bus.

Optionally, the device further comprises a filtering module; the filtering module is connected between the liquid level measuring module and the data acquisition module and is used for filtering noise in liquid level measuring data.

Compared with the prior art, the utility model has the following advantages: the liquid level measuring device comprises a plurality of liquid level measuring sensing pieces, wherein each liquid level measuring sensing piece is arranged in a corresponding liquid flow pipeline, and each liquid level measuring sensing piece is sequentially arranged in the liquid flow pipeline which is adjacently arranged; the liquid level measuring module is used for measuring liquid level information in the liquid flow pipeline perceived by the liquid level measuring sensing pieces; still include data acquisition module and power, liquid level measurement module, data acquisition module and power link to each other in proper order, and data acquisition module is used for receiving liquid level measurement module's output information, and the power provides the electric energy for multiple spot liquid level measurement device for this measuring device has the wiring less, small, and the precision is high, simple to operate scheduling advantage.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the accompanying drawings:

FIG. 1 is a schematic view of a multi-point fluid level measuring device of the present utility model;

FIG. 2 is a schematic view of another construction of the multipoint liquid level measuring apparatus according to the present utility model;

FIG. 3 is a schematic view of still another construction of the multipoint liquid level measuring apparatus according to the present utility model.

110-a power supply;

120-a data acquisition module;

130-a liquid level measurement module;

140-a communication module;

150-a filtering module;

160-a level measurement sensing module comprising a plurality of level measurement sensing members.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present application, and it is obvious to those skilled in the art that the present application may be applied to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.

As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.

It will be understood that when an element is referred to as being "on," "connected to," "coupled to," or "contacting" another element, it can be directly on, connected or coupled to, or contacting the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to," or "directly contacting" another element, there are no intervening elements present. Likewise, when a first element is referred to as being "electrically contacted" or "electrically coupled" to a second element, there are electrical paths between the first element and the second element that allow current to flow. The electrical path may include a capacitor, a coupled inductor, and/or other components that allow current to flow even without direct contact between conductive components.

Fig. 1 is a schematic structural view of a multi-point liquid level measuring device according to the present utility model, and referring to fig. 1, the structure of the device mainly includes a liquid level measuring sensor module 160 (including a plurality of liquid level measuring sensors), a liquid level measuring module 130, a data collecting module 120, and a power supply 110. Each liquid level measurement sensing piece is placed in a corresponding liquid flow pipeline, and each liquid level measurement sensing piece is placed in the liquid flow pipeline which is adjacently arranged in sequence. Each of the liquid level measuring sensors is commonly connected to the liquid level measuring module 130, and the liquid level measuring module 130 is used for measuring liquid level information in the liquid flow pipeline sensed by the liquid level measuring sensor. The liquid level measurement module 130, the data acquisition module 120 and the power supply 110 are sequentially connected, the data acquisition module 120 is used for receiving output information of the liquid level measurement module 130, and the power supply 110 provides electric energy for the multipoint liquid level measurement device in the embodiment.

In this embodiment, each cooling fluid conduit is in two states, one in which there is fluid in the conduit (including the inlet and outlet conduits) and one in which there is no fluid in the conduit. In general, each liquid cooling pipeline in the energy storage box body is filled with liquid, when a certain pipeline fails and no liquid exists, the liquid level signals sensed by the corresponding liquid level measuring sensing parts in the pipeline change, so that the pipeline liquid level signals generated by all the liquid level measuring sensing parts as a whole change, and finally the current output by the power supply changes correspondingly. And then, by combining the arrangement rule that each liquid level measurement sensing piece is sequentially arranged into the liquid flow pipelines which are adjacently arranged in the embodiment, different power supply output currents can be known to correspond to different pipeline liquid level conditions, and then, the specific liquid flow pipeline is known to have faults, the faults are removed in the shortest time, and the stable operation of the cooling system of the energy storage cabinet is facilitated.

In the conventional liquid level measuring apparatus, one liquid level sensor needs to be connected with three wires, whereas in the measurement of the present embodiment, only two wires, namely, a positive wire and a negative wire, are needed for connection between the power supply 110 and the data acquisition module 120. In addition, the level measurement sensor has fewer wires, and only one wire is required to be connected to the level measurement module 130 of the device per pipeline fluid site.

In one example, the level measurement sensor is provided in 8, and further, the level measurement module 120 may employ an IC-VK36W series circuit. The device that traditional detection mode adopted uses with high costs to need to use very long connecting wire when the device is installed, in order to cooperate long connecting wire, the structure that makes the product easily receives the restriction, and the dismouting is complicated, and the price is expensive, is unfavorable for popularization and popularization of product. The embodiment adopts a 1-8-point high-sensitivity IC-VK36W series circuit, which is based on the detection principle of capacitance induction. By way of example, the level measurement circuit may be an IC-VK36W81 measurement circuit, even though 8 channels are measured, each channel being provided with only one wire.

Further, one IC-VK36W81 can measure the liquid level of 8 liquid flow pipelines at maximum, and when a plurality of IC-VK36W81 are arranged, more liquid flow pipeline liquid levels can be measured. By way of example, if two IC-VK36W81 are used, a maximum of 16 fluid line levels can be measured, and if 3 IC-VK36W81 are used, a maximum of 24 fluid line levels can be measured. It can be seen that if the number of measurement circuits IC-VK36W81 used is N, the maximum number of liquid flow conduit levels that can be measured is 8N. It will be appreciated that one IC-VK36W81 can measure up to 8 fluid line levels, and does not necessarily require the connection of 8 level measurement sensing members, and that fewer than 8 level measurement sensing members may be optionally connected. For example, when the liquid level of the liquid flow pipeline to be measured is 4 or 5, the liquid level measuring sensor is connected with 4 liquid level measuring sensor pieces, and the liquid level measuring function of the liquid flow pipeline can be realized by connecting the liquid level measuring sensor pieces with 5 liquid level measuring sensor pieces.

In one example, the level measurement sensor is a level sensing sheet metal, which may be a sheet metal. The sensor of every liquid level measurement point is installed with foil laminating can, and liquid level sensing foil's advantage lies in that the volume is less, and sensitivity is higher. Illustratively, 8 liquid level sensing metallic plates are placed in the liquid flow conduit, and these 8 liquid level sensing metallic plates are then commonly connected to the liquid level measurement module 130, and the liquid level signals sensed by them are transmitted to the liquid level measurement module 130.

In one example, the output current of the power supply 110 is between 4-20 mA. Compared with the traditional measuring device, in order to make the power consumption of the measuring device of the embodiment lower, the maximum current of the power supply 110 is controlled to be about 20mA, so that the energy consumption can be reduced, and the electricity cost can be saved after long-term use. For example, in a low power consumption mode, the liquid level states of different liquid flow pipelines output different currents, for example, 4mA indicates that 8 liquid sites have liquid, 20mA indicates that 8 liquid sites have no liquid, 8 parts are equally divided in a 4-20 mA interval, and accordingly, the number of the liquid sites where the liquid exists can be known according to the output current.

It can be understood that if there are more than 8 liquid level points to be measured, such as 16, 24, 32, etc., the interval of 4-20 mA can be equally divided into corresponding parts, so as to obtain the number of liquid level points of the liquid currently existing, which is not listed here.

In one example, power supply 110 employs a current loop transmitter model number XTR 116. The power supply 110 can output different magnitudes of current according to a change in load size using a current loop transmitter model number XTR 116. The operating voltage range of the XTR116 current loop transmitter is 7.5-36V, and the XTR116 current loop transmitter is provided with an internal reference and can send an analog signal of 4-20 mA.

In an example, as shown in fig. 2, fig. 2 is another schematic structural diagram of the multipoint liquid level measuring apparatus according to the present utility model, where the apparatus further includes a communication module 140, and the communication module 140 is connected to the data acquisition module 120, and is configured to send the acquired current data. For example, the data may be transmitted to the man-machine interaction device through the communication module 140, so that the user can more precisely know which liquid level of the liquid site is abnormal through the data displayed on the man-machine interaction interface.

In one example, the communication module 140 employs RS485 communication. The RS485 communication adopts differential signals, and has the advantages of inhibiting common-mode interference, and effectively improving communication reliability especially when the industrial field environment is complex and the interference is more. The RS485 communication employs two communication lines, generally denoted a and B or d+ and D-. The logic '1' is expressed by the voltage difference between two lines as +0.2-6V, the logic '0' is expressed by the voltage difference between two lines as- (0.2-6) V, the RS485 communication speed is high, and the maximum transmission speed can reach more than 10 Mb/s. In addition, the communication interface of the RS485 is very simple, is similar to MAX232 used in RS232 communication, can be directly connected with the UART serial port of the singlechip by only needing one RS485 converter, and uses the completely same asynchronous serial communication protocol. Of course, other communication methods such as RS232 and RS422 may be used in this embodiment.

In one example, the connection between the level measurement module 130 and the data acquisition module 120 employs an I2C bus. The I2C bus only requires two bus lines, one serial data line SDA and one serial clock line SCL, and the serial 8-bit bidirectional data transmission bit rate can reach 100kbit/s in a standard mode, 400kbit/s in a fast mode and 3.4Mbit/s in a high-speed mode. The data of the VK36W81 is read through the I2C bus, the current data is read every cycle, and then the current data is used for judging the actual state of the liquid sites of the liquid flow pipelines.

In an example, as shown in fig. 3, fig. 3 is a schematic structural diagram of a multi-point liquid level measurement device according to the present utility model, where the device may further include a filtering module 150, and the filtering module 150 is connected between the liquid level measurement module 130 and the data acquisition module 120, for filtering noise in the liquid level measurement data. Filtering is an important measure for inhibiting and preventing interference, and abnormal output when the liquid level measurement sensing piece is interfered can be removed through filtering, so that the liquid level judgment result is high in accuracy.

In this embodiment, the data acquisition module 120 may internally set or select an acquisition circuit with a filtering function, and the multipoint liquid level measuring device of this embodiment may not additionally set the filtering module 150.

The multipoint liquid level measuring device provided by the embodiment is provided with a plurality of liquid level measuring sensing pieces, a liquid level measuring module 130, a data acquisition module 120 and a power supply 110, wherein each liquid level measuring sensing piece is arranged in a corresponding liquid flow pipeline, and each liquid level measuring sensing piece is sequentially arranged in the liquid flow pipeline which is adjacently arranged; each liquid level measurement sensing element is commonly connected to the liquid level measurement module 130, and the liquid level measurement module 130 is used for measuring liquid level information in the liquid flow pipeline sensed by the liquid level measurement sensing elements; the liquid level measurement module 130, the data acquisition module 120 and the power supply 110 are connected in sequence, the data acquisition module 120 is used for receiving output information of the liquid level measurement module 130, and the power supply 110 provides electric energy for the multipoint liquid level measurement device, so that the measurement device has the advantages of being small in wiring, small in size, high in precision, convenient to install and the like.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the above disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations of the present application may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this application, and are therefore within the spirit and scope of the exemplary embodiments of this application.

Meanwhile, the present application uses specific words to describe embodiments of the present application. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present application. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present application may be combined as suitable.

Likewise, it should be noted that in order to simplify the presentation disclosed herein and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not intended to imply that more features than are presented in the claims are required for the subject application. Indeed, less than all of the features of a single embodiment disclosed above.

In some embodiments, numbers describing the components, number of attributes are used, it being understood that such numbers being used in the description of embodiments are modified in some examples by the modifier "about," approximately, "or" substantially. Unless otherwise indicated, "about," "approximately," or "substantially" indicate that the number allows for a 20% variation. Accordingly, in some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations that may be employed in some embodiments to confirm the breadth of the range, in particular embodiments, the setting of such numerical values is as precise as possible.

While the present application has been described with reference to the present specific embodiments, those of ordinary skill in the art will recognize that the above embodiments are for illustrative purposes only, and that various equivalent changes or substitutions can be made without departing from the spirit of the present application, and therefore, all changes and modifications to the embodiments described above are intended to be within the scope of the claims of the present application.

Claims (10)

1. A multi-point fluid level measurement device, comprising:

a plurality of liquid level measurement sensing members;

each liquid level measurement sensing element is arranged in a corresponding liquid flow pipeline, and each liquid level measurement sensing element is sequentially arranged in the liquid flow pipeline which is adjacently arranged;

a liquid level measurement module;

each liquid level measurement sensing piece is connected to the liquid level measurement module in a common mode, and the liquid level measurement module is used for measuring liquid level information in the liquid flow pipeline sensed by the liquid level measurement sensing pieces;

the system also comprises a data acquisition module and a power supply;

the liquid level measuring module, the data acquisition module and the power supply are connected in sequence, the data acquisition module is used for receiving the output information of the liquid level measuring module, and the power supply provides electric energy for the multipoint liquid level measuring device.

2. The multipoint liquid level measuring device according to claim 1, wherein the liquid level measuring sensor is a liquid level sensing metal sheet.

3. The multipoint liquid level measuring device according to claim 1, wherein the number of the liquid level measuring sensor members is 8.

4. The multi-point fluid level measurement device of claim 3, wherein the fluid level measurement module employs an IC-VK36W series circuit.

5. The multipoint liquid level measuring device according to claim 1, wherein the output current of the power source is between 4 and 20 mA.

6. The multi-point level measurement device of claim 5, wherein the power source employs a current loop transmitter model XTR 116.

7. The multipoint liquid level measurement device of claim 1, further comprising a communication module;

the communication module is connected to the data acquisition module and is used for sending acquired current data.

8. The multipoint liquid level measuring device according to claim 7, wherein the communication module adopts an RS485 communication mode.

9. The multipoint liquid level measurement device of claim 1, wherein a connection line between the liquid level measurement module and the data acquisition module employs an I2C bus.

10. The multipoint liquid level measurement device of claim 1, further comprising a filtering module;

the filtering module is connected between the liquid level measuring module and the data acquisition module and is used for filtering noise in liquid level measuring data.