CN110514361A - A method and device for early warning of salt pan leakage based on environmental Internet of Things technology - Google Patents

Abstract

The present invention relates to the technical field of salt field leakage detection, in particular to a method and device for early warning of salt field leakage based on environmental Internet of Things technology. The position is coded; the conductivity sensor of each salt field is preset to test the conductivity of the aqueous solution in the cavity under the salt field to obtain test data; the test data of the conductivity of the aqueous solution in the detection cavity under the salt field is transmitted to the data center in real time; The data center compares the acquired test data with the preset standard value range to determine whether leakage occurs; when the test data is within the standard value range, no warning is required; when the test data exceeds the standard value range, the data center confirms the test data The source of Yantian and issued an early warning message. The method for early warning of salt pan leakage provided by the invention has extremely high accuracy and real-time performance, and can accurately determine the location of the salt pan where leakage occurs.

Description

A method and device for early warning of salt pan leakage based on environmental Internet of Things technology

technical field

The invention relates to the technical field of salt field leakage detection, in particular to a method and device for early warning of salt field leakage based on environmental Internet of Things technology.

Background technique

Traditional sea salt production is to pour seawater or underground brine into salt ponds, and then precipitate raw salt after natural evaporation and crystallization. This process is inseparable from the role of raw salt crystallization ponds, namely salt ponds. The bottom of the traditional raw salt crystallization pool is simply flattened and rolled and compacted, and then filled with brine to dry the salt. The bottom of the salt pool made in this way will inevitably have brine leakage and other disadvantages during the salt drying process. , resulting in the leakage and waste of brine in the salt pond.

In the production of salt fields, brine leakage in salt fields is an important indicator for evaluating the quality of salt fields; the loss of brine resources caused by leakage in salt fields is a technical problem encountered by many sodium salt and potassium salt production and manufacturing units. According to actual production experience, the seepage rate of Qinghai Salt Lake Salt Field and Xinjiang Salt Lake Salt Field is about 0.5-0.8mm/d, and the loss of potassium resources caused by seepage reaches 20-50%. It is scattered and absorbed, and it is difficult to mine and recycle again; the seepage of salt fields not only causes a substantial increase in the amount of resources consumed per unit of product, manpower, and material resources, but also causes huge losses in resources.

Therefore, in view of the cost increase and resource loss caused by salt pan seepage, technicians have conducted a large number of salt pan anti-seepage research and developed a large number of salt pan anti-seepage technologies. At present, clay mechanical compaction is the most widely used for anti-seepage. Clay has the characteristics of fine particles, good bonding, and strong plasticity. Mechanical compaction can reduce the voids in the soil structure, enhance the compactness, and effectively reduce leakage; this method has The advantages of low cost and simple construction; another effective anti-seepage method is plastic film bottom anti-seepage, that is, a layer of plastic film is laid on the soil at the bottom of the salt pan or on the surface to form a barrier layer to prevent brine from seepage. The material is PVC canvas or PE plastic film. The construction of the plastic film base is simple and the anti-seepage effect is ideal. Due to its wide adaptability, it is a technology that can be adopted on a large scale in Yantian anti-seepage.

However, while anti-seepage technology continues to develop and progress, the salt field leak detection technology is stagnant; the existing salt field leak test methods mainly include the water level needle method and the bell jar seepage method, the so-called water level measurement method. The needle method is to use a probe to touch the water surface of the measured water level, but the depth of the probe touching the water surface will definitely affect the test accuracy, while the bell jar osmometric method is to use a hooded cylinder to buckle on the bottom of the salt pool to measure the local seepage. The overall seepage rate is estimated, but this method also has contradictions that affect the accuracy of the seepage measurement due to factors such as the selection of the measuring point and the depth of the cover barrel. At the same time, the above two methods have the disadvantages of complicated operation and difficult mastery. Therefore, the accuracy of the existing salt field leakage detection methods is poor, and the inability to find the leakage area in time has become a long-term scientific research topic for salt field professional workers.

Contents of the invention

In order to solve the problem that the leakage detection method of salt fields mentioned in the above-mentioned background technology has poor precision and cannot detect leakage in time, the present invention provides a method for early warning of leakage in salt fields based on environmental Internet of Things technology, which includes the following steps:

Step S1, select several salt pans to be tested, and encode the corresponding salt pan locations;

Step S2. Test the conductivity of the aqueous solution in the cavity under the corresponding salt pan by using the conductivity sensor preset in each salt pan to obtain test data;

Step S3, transmit the conductivity test data of the aqueous solution in the detection chamber below the salt field to the data center in real time;

Step S4, the data center compares the acquired test data with the preset standard value range to determine whether leakage occurs;

Step S5. When the test data is within the standard value range, no warning is required; when the test data exceeds the standard value range, the data center confirms the source of the test data, Yantian, and sends out a warning message.

On the basis of the above solution, preferably, the conductivity sensor is a DFRobot conductivity sensor.

On the basis of the above solution, preferably, the electrical conductivity sensor is powered by a solar mechanism arranged around the salt field.

On the basis of the above scheme, preferably, the following test data processing method when leakage occurs in the salt field is also included:

Step SS1, obtaining a data change curve according to the acquired test data, and constructing a solution conductivity change function;

Step SS2, comparing the change function of the conductivity of the solution with the change function of the conductivity of the standard aqueous solution over time obtained in advance;

Step SS3, judging whether there is leakage and the degree of leakage according to the comparison result, and giving an early warning.

The present invention provides a salt field leakage early warning device based on environmental Internet of Things technology, which includes a detection cavity under the salt field, the detection cavity communicates with the outside through a detection channel, and a channel opening connecting the detection channel to the outside is provided. There are conductivity sensors for detecting the filling of the detection chamber and the change of the conductivity of the aqueous solution in the detection channel.

On the basis of the above structure, preferably, a data transmission device is arranged in the conductivity sensor.

On the basis of the above structure, preferably, the detection cavity is connected with two detection channels, and the external channel openings of the detection channels are each provided with a conductivity sensor.

On the basis of the above structure, preferably, the two detection channels are arranged at diagonal positions of the salt field.

Compared with the prior art, a salt field leakage early warning method and device based on the environmental Internet of Things technology provided by the present invention has the following advantages: using the salt field leakage early warning method based on the environmental Internet of Things technology provided by the present invention, on the one hand Due to the large difference in conductivity between the aqueous solution and the salt solution, when the brine in the salt pan leaks, the conductivity of the aqueous solution can be used to quickly and accurately determine whether there is leakage in the salt pan; on the other hand, when the brine in the salt pan seeps When leaking, the presence of the detection chamber can also prevent the salt solution from directly infiltrating into the soil to a certain extent, causing damage to the soil and loss of brine resources.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a saltfield leakage warning device based on environmental Internet of Things technology provided by the present invention;

Fig. 2 is a cross-sectional view of a salt field leakage warning device based on environmental Internet of Things technology provided by the present invention;

Fig. 3 is a schematic structural diagram of another saltfield leakage warning device based on environmental Internet of Things technology provided by the present invention.

Reference signs:

100 Yantian 200 detection chambers 210 detection channels

300 conductivity sensor

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

The present invention provides a salt field leakage early warning method based on environmental Internet of Things technology, comprising the following steps:

Step S1, select several salt fields 100 to be tested, and encode the corresponding positions of the salt fields 100;

During specific implementation, in the step S1, several salt fields 100 to be tested are selected, and the salt fields 100 are encoded, and the encoding method can be digital encoding of 1, 2, 3, 4...n, wherein n≥1 is The nth Yantian 100 may also be coded according to row and column numbers (a, b), where a is the number of rows and b is the number of columns.

Step S2, by testing the conductivity sensor 300 preset in each salt field 100 and setting it under the corresponding salt field 100 to detect the conductivity of the aqueous solution in the chamber 200 to obtain test data;

During specific implementation, a detection cavity 200 is provided at the bottom of the salt field 100, and the inner space volume of the detection cavity 200 is preferably designed to be much smaller than the volume that the salt field 100 can accommodate seawater, so that it is easier to detect the leakage of the salt field 100, of course , can make adaptive adjustments according to the actual situation; the detection cavity 200 is filled with an aqueous solution, the aqueous solution can be tap water, etc., the detection cavity 200 is connected to the ground surface through the detection channel 210, and the detection channel 210 It is also filled with the same aqueous solution as that in the detection cavity 200, and the detection channel 210 is provided with a conductivity sensor 300 on the channel opening on the ground surface, and the aqueous solution in the detection cavity 200 is detected by the conductivity sensor 300, and the detection cavity is obtained. Conductivity data of aqueous solution in body 200;

In addition, the detection channel 210 is provided with a detachable sealing structure on the channel opening on the ground surface. On the one hand, the sealing structure can prevent impurities such as external gases and liquids from entering the detection channel 210 and the detection cavity 200, affecting the accuracy of the test. On the other hand, the detachable sealing structure can facilitate the replacement of the aqueous solution in the detection chamber 200; Outside of Yantian 100, it is also convenient for replacement and maintenance;

Not only that, the conductivity sensor 300 can also be encoded, and the specific encoding method can correspond to the number of Yantian 100. For example, when Yantian 100 is No. 1, the corresponding conductivity sensor 300 is a sensor No. 1-n, where n≥ 1 is the nth conductivity sensor 300 corresponding to No. 1 Yantian 100; similarly, when the number of Yantian 100 is (1,1), the corresponding conductivity sensor 300 is (1,1)-nth sensor, where n ≥1 is the nth conductivity sensor 300 corresponding to No. 1 salt field 100 .

Step S3, transmitting the conductivity test data of the aqueous solution in the detection chamber 200 below the Yantian 100 to the data center in real time;

During specific implementation, the data detected by the conductivity sensor 300 can be transmitted to a preset data center in real time through wired or wireless transmission, and the data center will perform follow-up analysis and processing based on the obtained test data.

Step S4, the data center compares the acquired test data with the preset standard value range to determine whether leakage occurs;

During specific implementation, the conductivity test value detected by the conductivity sensor 300 is compared with the standard value range of the aqueous solution obtained through the Internet of Things, according to whether it exceeds the standard value range, such as the conductivity of tap water is between 125- 1250μs/cm, while the conductivity of seawater is about 30000μs/cm, and when Yantian 100 is exposed to direct sunlight to evaporate part of the aqueous solution, the concentration of the solution inside Yantian 100 will continue to increase. When there is leakage, the brine in the saltpan will be detected. The cavity 200 will cause the conductivity of the aqueous solution in the detection cavity 200 to change, and then determine whether there is leakage.

Step S5. When the test data is within the standard value range, no warning is required; when the test data exceeds the standard value range, the data center confirms the source of the test data, Yantian 100, and sends out a warning message.

During specific implementation, when the test data shows that it is within the standard value range, there is no need for early warning; when the test data exceeds the standard value range, the data center will confirm the corresponding Yantian 100 through the number of the conductivity sensor 300 from which the test data originates, and send The message is sent to the relevant management personnel etc.

Not only that, the above-mentioned analysis and test data can be uploaded to the environmental Internet of Things as reference data.

Using the salt field leakage warning method based on the environmental Internet of Things technology provided by the present invention, on the one hand, due to the large conductivity difference between the aqueous solution and the salt solution, when the brine in the salt field leaks, the conductivity of the aqueous solution can be quickly detected. Accurately judge whether there is leakage in Yantian 100; on the other hand, when leakage occurs in Yantian 100, the existence of the detection chamber 200 can also prevent the salt solution from directly infiltrating into the soil to a certain extent, causing soil damage and brine loss of resources.

Preferably, the conductivity sensor 300 is a DFRobot conductivity sensor 300 .

During specific implementation, the conductivity value of the aqueous solution in the detection chamber 200 provided under each salt pan 100 is measured by using the DFRobot conductivity sensor 300 .

Preferably, the conductivity sensor 300 is powered by a solar energy mechanism arranged around the salt field 100 .

During specific implementation, in order to make full use of natural resources and not cause energy waste, a solar energy mechanism is arranged around the Yantian 100. Since the locations where the Yantian 100 is installed have better sunlight exposure, the setting of the solar energy mechanism is conducive to the effective use of solar energy resources. use.

Preferably, based on the above-mentioned salt field leakage early warning method, the following test data processing method when leakage occurs in the salt field 100 is also included:

Step SS1, obtaining a data change curve according to the acquired test data, and constructing a solution conductivity change function;

During specific implementation, according to the acquired test data, the line diagram of the change law of the conductivity of the aqueous solution in the detection chamber 200 and time can be obtained through the data, thereby constructing a function of the change of the conductivity of the solution;

Step SS2, comparing the change function of the conductivity of the solution with the change function of the conductivity of the standard aqueous solution over time obtained in advance;

During the specific implementation, it can be seen from experiments that the conductivity of the aqueous solution at a certain temperature in a closed system is not constant, showing a slow and continuous increase; thus, the aqueous solution used is tested for long-term conductivity, and the conductivity of the aqueous solution is obtained. Conductivity change function with time; in order to exclude the influence caused by the change of the conductivity of the aqueous solution itself, the function composed of the conductivity of the solution within the specified time is compared with the change function of the conductivity of the standard aqueous solution with time, so as to exclude the change of the conductivity of the aqueous solution itself. influence, and reduce the occurrence of misjudgment.

Step SS3, judging whether there is leakage and the degree of leakage according to the comparison result, and giving an early warning.

During the specific implementation, by comparing the function formed by the conductivity of the solution with the time-varying function of the conductivity of the standard aqueous solution within the specified time, when the growth rate of the solution conductivity is higher than the growth rate of the aqueous solution, it indicates that there is leakage, that is, make Warning reminder.

Not only that, but the severity of the current leakage of Yantian 100 can also be judged by the change trend of the growth rate of the conductivity of the solution.

The present invention provides a salt field leakage warning device based on environmental Internet of Things technology, which includes a detection cavity 200 under the salt field 100, the detection cavity 200 communicates with the outside through a detection channel 210, and the detection channel 210 is connected The external channel opening is provided with a conductivity sensor 300 for detecting the change of the conductivity of the aqueous solution filling the detection chamber 200 and detecting the channel 210 .

During specific implementation, as shown in Figure 1-2, a sealed detection cavity 200 is provided at the bottom of the salt field 100, of course, it can be a cavity sealed by cement concrete around the bottom surface, and the detection cavity 200 is filled with Filled with an aqueous solution, a detection channel 210 is provided on one side of the detection cavity 200, the detection channel 210 is also filled with an aqueous solution, the detection channel 210 communicates with the outside, that is, the ground surface, and the detection channel 210 is connected to the ground surface A conductivity sensor 300 is arranged on the passage opening, and the passage opening is preferably arranged near the corresponding salt field 100. The conductivity sensor 300 is used to detect the conductivity of the aqueous solution in the entire detection chamber 200 through the aqueous solution at the passage opening part. , so as to monitor whether there is leakage in Yantian 100 in real time by detecting the change of the conductivity of the aqueous solution in the cavity 200;

On the basis of the above structure, as a preferred solution, a sealing structure is provided at the passage opening, and the conductivity sensor 300 is arranged in the sealing structure. The sealing structure can be provided with a sealing cover at the upper end, and the lower end is connected to the sealing structure. The channel port is fixed and hermetically connected to the sealed chamber. By opening the sealing cover, the conductivity sensor 300 can be maintained and replaced. At the same time, the aqueous solution in the detection chamber 200 can be added, withdrawn, replaced, etc. through the detection channel 210 .

It should be noted that, when constructing the above-mentioned Yantian 100 with the detection cavity 200, the bottom of the detection cavity 200 and the surrounding areas can be removed to construct concrete, and then prefabricated panels with pre-designed shapes and sizes can be built on the Detect the upper surface of the cavity 200 to achieve sealing, and then build the surrounding parts of Yantian 100;

It should be pointed out that the inventive idea of the present invention is how to realize the leakage detection and early warning of Yantian 100. As for the construction method of the detection chamber 200 and Yantian 100, those skilled in the art should rely on the inventive concept of the present invention and the prior art. technologies that can be realized.

Preferably, the conductivity sensor 300 is provided with a signal transmission device.

During specific implementation, a data transmission device is provided in the conductivity sensor 300, and the data transmission method can be wired transmission or wireless transmission, such as data transmission through NB-IOT, and finally the data is transmitted to the data center , the data center can be connected to the environmental Internet of Things data, and analyze the data collected by the conductivity sensor 300 through the environmental Internet of Things.

Preferably, the detection chamber 200 is connected with two detection channels 210 , and the external channel openings of the detection channels 210 are each provided with a conductivity sensor 300 .

During specific implementation, as a preferred solution, two detection channels 210 are connected to the detection cavity 200, and the detection channels 210 are all communicated with the ground surface, and the detection channels 210 are connected to the ground surface. There is a conductivity sensor 300, and the channel opening is preferably set near the corresponding salt field 100. By setting two conductivity sensors 300, it is beneficial that when one of the sensors fails, the other can still work.

Preferably, the two detection channels 210 are arranged at diagonal positions of the salt field 100 .

During specific implementation, as shown in Figure 3, the detection channel 210 is set at the diagonal position of Yantian 100, which is convenient for leaks that occur in different positions, and can obtain information faster for rapid processing. The conductivity sensor 300 provided on the channel 210 obtains the speed of the conductivity change to judge the approximate position. Specifically, as shown in FIG. If the conductivity change is obtained first on the left side, it can be judged that its position is in the upper left corner.

Although terms such as salt pan, detection chamber, detection channel, conductivity sensor etc. are frequently used in this paper, the possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (8)

1. a kind of salt pan based on environment technology of Internet of things leaks method for early warning, which comprises the following steps:

Step S1, several salt pans to be measured are selected, and corresponding salt pan position is encoded；

Step S2, by being preset in the conductivity sensor test setting in each salt pan water in test chamber below the corresponding salt pan The conductivity of solution, obtains test data；

Step S3, by the conductivity test data real-time Transmission of aqueous solution in test chamber below salt pan to data center；

Step S4, the test data that data center will acquire is compared with preset standard scale, judges whether to occur Leakage；

Step S5, when test data is in standard scale, it is not necessarily to early warning；When test data exceeds standard scale When, data center passes through the salt pan of exact p-value data source and issues warning information.

2. the salt pan according to claim 1 based on environment technology of Internet of things leaks method for early warning, it is characterised in that: described Conductivity sensor is DFRobot conductivity sensor.

3. the salt pan according to claim 1 based on environment technology of Internet of things leaks method for early warning, it is characterised in that: described Conductivity sensor passes through the solar energy mechanism energy supply that salt pan periphery is arranged in.

4. the salt pan according to claim 1 based on environment technology of Internet of things leaks method for early warning, which is characterized in that also wrap Include the following test data processing method when salt pan leaks:

Step SS1, data variation curve is obtained according to the test data of acquisition, and constructs electrical conductivity of solution variation function；

Step SS2, by electrical conductivity of solution variation function and the standard aqueous solution conductivity that is previously obtained change over time function into Row compares；

Step SS3, it according to comparison result carries out judging whether to occur to leak and leak magnitude, and makes early warning.

5. a kind of salt pan based on environment technology of Internet of things leaks prior-warning device, it is characterised in that: be included in below salt pan and be equipped with Test chamber, the test chamber are connected to by sense channel with outside, on the passway outside sense channel connection Equipped with the conductivity sensor for detecting the aqueous solution conductivity variations situation being full of in test chamber and sense channel.

6. the salt pan according to claim 5 based on environment technology of Internet of things leaks prior-warning device, it is characterised in that: described Data transmission device is provided in conductivity sensor.

7. the salt pan according to claim 5 based on environment technology of Internet of things leaks prior-warning device, it is characterised in that: described There are two sense channels, the sense channel to be equipped with conductivity sensor in external passway for connection on test chamber.

8. the salt pan according to claim 7 based on environment technology of Internet of things leaks method for early warning, it is characterised in that: described Two sense channels are arranged at the diagonal position in salt pan.