Device and method for adjusting ammonia adding amount of calculation type pH detection system

Abstract

The invention discloses a device and method for adjusting the ammonia adding amount of a calculation type pH detection system. The device comprises a control system, a conductivity electrode, an electric automatic regeneration cation exchange device, a hydrogen conductivity electrode and an automatic ammonia adding system. The water sample input pipeline is communicated with an inlet of the electric automatic regeneration cation exchange device through the conductivity electrode, an outlet of the electric automatic regeneration cation exchange device is communicated with an inlet of the automatic ammonification system through the hydrogen conductivity electrode, and an outlet of the automatic ammonification system is communicated with the water sample output pipeline; the input end of the control system is connected with the conductivity electrode, the input end of the control system is connected with the hydrogen conductivity electrode, the output end of the control system is connected with the automatic ammonia adding system, and the device and the method can accurately control the ammonia adding amount.

Description

Technical Field

[0001] The invention belongs to the field of automatic control and relates to a device and method for adjusting the amount of ammonia added in a calculation-type pH detection system. Background Art

[0002] The steam of high-parameter and large-capacity units has a large ability to dissolve impurities. The thermal equipment of the steam system is subjected to a high heat load, which is more prone to scaling and corrosion, so the water quality requirements for feed water are more stringent. Therefore, continuous and accurate measurement and control of the pH value of the steam system of the generator set is the main means to prevent corrosion accidents of thermal equipment. Boiler feed water ammonia addition technology is one of the important means for power plants to ensure the quality of steam and water.

[0003] Traditionally, water ammonia addition usually involves sampling at the ammonia addition point to measure the pH value and then control the amount of ammonia added. However, since the pH online meter is affected by the solution resistance, it has a large hysteresis and is prone to deviation, so the amount of ammonia added is not accurately controlled. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a device and method for adjusting the amount of ammonia added in a calculation-type pH detection system, which can accurately control the amount of ammonia added.

[0005] To achieve the above object, the present invention discloses a device for adjusting the amount of ammonia added in a calculation-type pH detection system, comprising a control system, a conductivity electrode, an electric automatic regeneration cation exchange device, a hydrogen conductivity electrode and an automatic ammonia addition system;

[0006] The water sample input pipeline is connected to the inlet of the electric automatic regeneration cation exchange device through the conductivity electrode, the outlet of the electric automatic regeneration cation exchange device is connected to the inlet of the automatic ammonia addition system through the hydrogen conductivity electrode, and the outlet of the automatic ammonia addition system is connected to the water sample output pipeline;

[0007] The input end of the control system is connected to the conductivity electrode, the input end of the control system is connected to the hydrogen conductivity electrode, and the output end of the control system is connected to the automatic ammonia adding system.

[0008] The further improvement of the device for adjusting the amount of ammonia added in the calculation-type pH detection system of the present invention is:

[0009] Furthermore, the input end of the control system is connected to the conductivity electrode via the first transmitter.

[0010] Furthermore, the input end of the control system is connected to the hydrogen conductivity electrode via a second transmitter.

[0011] Furthermore, the output end of the control system is connected to the automatic ammonia adding system via a data line.

[0012] The present invention discloses a method for adjusting the amount of ammonia added by a calculation-type pH detection system, comprising:

[0013] Obtaining conductivity information of a water sample measured by a conductivity electrode;

[0014] Obtain hydrogen conductivity information of a water sample measured by a hydrogen conductivity electrode;

[0015] Determining the pH value of the water sample according to the conductivity information and hydrogen conductivity information of the water sample;

[0016] Calculating the required amount of ammonia to be added according to the pH value of the water sample;

[0017] The automatic ammonia addition system is controlled to add ammonia to the water according to the required ammonia addition amount.

[0018] The further improvement of the method for adjusting the amount of ammonia added by the calculation-type pH detection system of the present invention is:

[0019] Furthermore, the pH value of the water sample is determined using a data model based on the conductivity information and hydrogen conductivity information of the water sample.

[0020] The present invention discloses a system for adjusting the amount of ammonia added by a calculation-type pH detection system, comprising:

[0021] A first acquisition module is used to acquire conductivity information of a water sample measured by a conductivity electrode;

[0022] A second acquisition module is used to obtain hydrogen conductivity information of the water sample measured by the hydrogen conductivity electrode;

[0023] A determination module, used to determine the pH value of the water sample according to the conductivity information and hydrogen conductivity information of the water sample;

[0024] A calculation module, used for calculating the required amount of ammonia to be added according to the pH value of the water sample;

[0025] The control module is used to control the automatic ammonia addition system to add ammonia to the water according to the required amount of ammonia added.

[0026] The further improvement of the system for adjusting the amount of ammonia added by the calculation-type pH detection system of the present invention is:

[0027] Furthermore, the pH value of the water sample is determined using a data model based on the conductivity information and hydrogen conductivity information of the water sample.

[0028] The present invention discloses a computer device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the method for adjusting the amount of ammonia added by the computational pH detection system are implemented.

[0029] The present invention discloses a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for adjusting the amount of ammonia added by the calculation-type pH detection system are implemented.

[0030] The present invention has the following beneficial effects:

[0031] During specific operation, the device and method for adjusting the amount of ammonia added by the calculation-type pH detection system described in the present invention determines the pH value of the water sample according to the conductivity information and hydrogen conductivity information of the water sample, calculates the required amount of ammonia added according to the pH value of the water sample, and controls the automatic ammonia addition system to add ammonia to the water according to the required amount of ammonia added, thereby avoiding the problem of inaccurate control caused by directly measuring the pH value. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 It is a structural diagram of the present invention.

[0034] Among them, 1 is a control system, 2 is a conductivity electrode, 3 is an electric automatic regeneration cation exchange device, 4 is a hydrogen conductivity electrode, and 5 is an automatic ammonia addition system. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0037] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0038] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0039] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0040] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0041] 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 are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0043] As is known to all, the electrical conductivity electrode (electrical conductance element), referred to as the conductivity electrode, is a sensitive element that determines the ion concentration in the solution or the purity of the solution by measuring the conductivity. The following is a detailed introduction to the conductivity electrode: The technical principle of the conductivity electrode is based on the difference in conductivity. When a voltage is applied across the electrodes, the charges in the electrolyte solution will move, thereby generating a current. By measuring the magnitude of the current, it can be converted into a conductivity value, thereby indirectly reflecting the concentration of ions in the solution and the purity of the solution.

[0044] The hydrogen conductivity electrode is a special electrode used to measure the concentration of hydrogen ions in water (i.e., hydrogen conductivity). The following is a detailed introduction to the hydrogen conductivity electrode: The working principle of the hydrogen conductivity electrode is similar to that of the ordinary conductivity electrode, but it focuses more on measuring the conductivity of hydrogen ions in water. When the electrode is placed in water, the hydrogen ions (or other ions) in the water will migrate under the action of the electrode to form an electric current. By measuring the magnitude of the current, the concentration of hydrogen ions in the water, i.e., hydrogen conductivity, can be indirectly calculated. Hydrogen conductivity electrodes usually have special structures and materials to meet the measurement needs of hydrogen ions in water. For example, the electrode may be made of corrosion-resistant and anti-pollution materials to ensure the stability and accuracy of long-term measurements. In addition, the design of the electrode may also include considerations such as preventing electrode polarization and improving measurement accuracy.

[0045] Embodiment 1

[0046] refer to Figure 1 The device for adjusting the amount of ammonia added in the calculation-type pH detection system of the present invention comprises a water sample input pipeline, a water sample output pipeline, a control system 1, a conductivity electrode 2, an electric automatic regeneration cation exchange device 3, a hydrogen conductivity electrode 4 and an automatic ammonia addition system 5;

[0047] The water sample input pipeline is connected to the inlet of the electric automatic regeneration cation exchange device 3 through the conductivity electrode 2, the outlet of the electric automatic regeneration cation exchange device 3 is connected to the inlet of the automatic ammonia addition system 5 through the hydrogen conductivity electrode 4, and the outlet of the automatic ammonia addition system 5 is connected to the water sample output pipeline.

[0048] The input end of the control system 1 is connected to the conductivity electrode 2 via the first transmitter, the input end of the control system 1 is connected to the hydrogen conductivity electrode 4 via the second transmitter, and the output end of the control system 1 is connected to the automatic ammonia adding system 5.

[0049] The working principle of the device for adjusting the amount of ammonia added in the calculation-type pH detection system of the present invention is:

[0050] The water sample flows through the conductivity electrode 2, the conductivity value of the water sample is measured, and then flows through the electric automatic regeneration cation exchange device 3 to remove cations in the water, and then passes through the hydrogen conductivity electrode 4 to obtain the hydrogen conductivity of the water sample. Then, the pH value of the current water sample is calculated according to the data model (the relationship formula between conductivity, hydrogen conductivity and pH). The power plant operator adjusts the required amount of ammonia addition through the automatic ammonia addition system 5 according to the obtained pH value, and finally obtains a pH value that meets the production requirements.

[0051] The working principle of the electric automatic regeneration cation exchange device 3 is: using the voltage across the electrodes to move the charged ions in the water, and cooperating with the ion exchange resin and the selective membrane to accelerate the movement of the ions, so as to effectively remove the cations in the water.

[0052] Embodiment 2

[0053] The method for adjusting the amount of ammonia added by a calculation-type pH detection system of the present invention is based on the device for adjusting the amount of ammonia added by the calculation-type pH detection system. The device for adjusting the amount of ammonia added by the calculation-type pH detection system comprises a water sample input pipeline, a water sample output pipeline, a control system 1, a conductivity electrode 2, an electric automatic regeneration cation exchange device 3, a hydrogen conductivity electrode 4 and an automatic ammonia addition system 5. The water sample input pipeline is connected to the inlet of the electric automatic regeneration cation exchange device 3 via the conductivity electrode 2, the outlet of the electric automatic regeneration cation exchange device 3 is connected to the inlet of the automatic ammonia addition system 5 via the hydrogen conductivity electrode 4, the outlet of the automatic ammonia addition system 5 is connected to the water sample output pipeline, the input end of the control system 1 is connected to the conductivity electrode 2 via a first transmitter, the input end of the control system 1 is connected to the hydrogen conductivity electrode 4 via a second transmitter, and the output end of the control system 1 is connected to the automatic ammonia addition system 5.

[0054] Specifically, the method for adjusting the amount of ammonia added by the calculation-type pH detection system comprises the following steps:

[0055] Obtaining conductivity information of the water sample measured by the conductivity electrode 2;

[0056] Obtaining hydrogen conductivity information of the water sample measured by the hydrogen conductivity electrode 4;

[0057] Determining the pH value of the water sample according to the conductivity information and hydrogen conductivity information of the water sample;

[0058] Calculating the required amount of ammonia to be added according to the pH value of the water sample;

[0059] The automatic ammonia adding system 5 is controlled to add ammonia to the water according to the required ammonia adding amount.

[0060] Embodiment 3

[0061] The system for adjusting the amount of ammonia added by the calculation-type pH detection system of the present invention comprises:

[0062] A first acquisition module is used to acquire conductivity information of a water sample measured by a conductivity electrode 2;

[0063] A second acquisition module is used to obtain hydrogen conductivity information of the water sample measured by the hydrogen conductivity electrode 4;

[0064] A determination module, used to determine the pH value of the water sample according to the conductivity information and hydrogen conductivity information of the water sample;

[0065] A calculation module, used for calculating the required amount of ammonia to be added according to the pH value of the water sample;

[0066] The control module is used to control the automatic ammonia adding system 5 to add ammonia to the water according to the required ammonia adding amount.

[0067] The division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into a processor, or may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0068] Embodiment 4

[0069] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the method for adjusting the amount of ammonia added by the calculation-type pH detection system are implemented, for example, including: obtaining the conductivity information of the water sample measured by the conductivity electrode 2; obtaining the hydrogen conductivity information of the water sample measured by the hydrogen conductivity electrode 4; determining the pH value of the water sample according to the conductivity information and hydrogen conductivity information of the water sample; calculating the required amount of ammonia added according to the pH value of the water sample; and controlling the automatic ammonia addition system 5 to add ammonia to the water according to the required amount of ammonia added. The memory may include a memory, such as a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk memory, etc. The processor, the network interface, and the memory are interconnected through an internal bus, which may be an industrial standard architecture bus, a peripheral component interconnection standard bus, an extended industrial standard architecture bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs. Specifically, the program may include program codes, and the program codes include computer operation instructions. The memory may include memory and nonvolatile memory and provides instructions and data to the processor.

[0070] Embodiment 5

[0071] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for adjusting the amount of ammonia added by the calculation-type pH detection system are implemented, for example, including: obtaining the conductivity information of the water sample measured by the conductivity electrode 2; obtaining the hydrogen conductivity information of the water sample measured by the hydrogen conductivity electrode 4; determining the pH value of the water sample according to the conductivity information and hydrogen conductivity information of the water sample; calculating the required amount of ammonia added according to the pH value of the water sample; and controlling the automatic ammonia addition system 5 to add ammonia to the water according to the required amount of ammonia added. Specifically, the computer-readable storage medium includes, but is not limited to, for example, volatile memory and / or non-volatile memory. The volatile memory may include random access memory (RAM) and / or cache memory (cache), etc. The non-volatile memory may include a read-only memory (ROM), a hard disk, a flash memory, an optical disk, a magnetic disk, etc.

[0072] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0073] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0074] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0075] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0076] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0077] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0078] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A device for adjusting the amount of ammonia added in a calculation-type pH detection system, characterized in that: It comprises a control system (1), a conductivity electrode (2), an electric automatic regeneration cation exchange device (3), a hydrogen conductivity electrode (4) and an automatic ammonia addition system (5); The water sample input pipeline is connected to the inlet of the electric automatic regeneration cation exchange device (3) via the conductivity electrode (2), the outlet of the electric automatic regeneration cation exchange device (3) is connected to the inlet of the automatic ammonia addition system (5) via the hydrogen conductivity electrode (4), and the outlet of the automatic ammonia addition system (5) is connected to the water sample output pipeline; The input end of the control system (1) is connected to the conductivity electrode (2), the input end of the control system (1) is connected to the hydrogen conductivity electrode (4), and the output end of the control system (1) is connected to the automatic ammonia addition system (5).

2. The device for adjusting the amount of ammonia added in a computing pH detection system according to claim 1, characterized in that: The input end of the control system (1) is connected to the conductivity electrode (2) via a first transmitter.

3. The device for adjusting the amount of ammonia added in a computing pH detection system according to claim 1, characterized in that: The input end of the control system (1) is connected to the hydrogen conductivity electrode (4) via a second transmitter.

4. The device for adjusting the amount of ammonia added in a computing pH detection system according to claim 1, characterized in that: The output end of the control system (1) is connected to the automatic ammonia adding system (5) via a data line.

5. A method for adjusting the amount of ammonia added by a calculation-type pH detection system, characterized in that: include: Obtaining conductivity information of the water sample measured by the conductivity electrode (2); Obtaining hydrogen conductivity information of the water sample measured by the hydrogen conductivity electrode (4); Determining the pH value of the water sample according to the conductivity information and hydrogen conductivity information of the water sample; Calculating the required amount of ammonia to be added according to the pH value of the water sample; The automatic ammonia adding system (5) is controlled to add ammonia to the water according to the required amount of ammonia added.

6. The method for adjusting the amount of ammonia added by a calculation-based pH detection system according to claim 5, characterized in that: The pH value of the water sample is determined using a data model according to the conductivity information and hydrogen conductivity information of the water sample.

7. A system for adjusting the amount of ammonia added by a calculation-type pH detection system, characterized in that: include: A first acquisition module, used for acquiring conductivity information of a water sample measured by a conductivity electrode (2); A second acquisition module is used to acquire hydrogen conductivity information of the water sample measured by the hydrogen conductivity electrode (4); A determination module, used to determine the pH value of the water sample according to the conductivity information and hydrogen conductivity information of the water sample; A calculation module, used for calculating the required amount of ammonia to be added according to the pH value of the water sample; The control module is used to control the automatic ammonia addition system (5) to add ammonia to the water according to the required amount of ammonia added.

8. The system for adjusting the amount of ammonia added by the calculation-type pH detection system according to claim 7, characterized in that: The pH value of the water sample is determined using a data model according to the conductivity information and hydrogen conductivity information of the water sample.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for adjusting the amount of ammonia added by the computational pH detection system as described in claim 5 or 6 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for adjusting the amount of ammonia added by a computational pH detection system as claimed in claim 5 or 6 are implemented.

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