CN217879061U

CN217879061U - Water hardness monitoring and controlling system of high-temperature water treatment system

Info

Publication number: CN217879061U
Application number: CN202222189149.1U
Authority: CN
Inventors: 李军; 王冰; 吴桃刚
Original assignee: Xinjiang Bonasen Energy Technology Development Co ltd
Current assignee: Xinjiang Bonasen Energy Technology Development Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-11-22
Anticipated expiration: 2032-08-19

Abstract

The utility model relates to a high temperature water processing system quality of water hardness monitoring control system, including water sample storage refrigerating plant, reaction vessel and control terminal, water sample storage refrigerating plant's inlet is respectively through one-level sampling pipeline and second grade sampling pipeline connection water treatment facilities's one-level processing unit and second grade processing unit, water treatment facilities's control system is connected to automatically controlled valve, and this control system is connected with control terminal, water sample storage refrigerating plant's leakage fluid dram connects reaction vessel's inlet, reaction vessel is connected with the automatic injection system of one-level buffer, the automatic injection system of chrome black T reagent, the automatic injection system of one-level EDTA standard liquid, the automatic injection pipeline system of second grade buffer, the automatic injection system of acid chrome blue K indicator liquid and the automatic injection system of second grade EDTA standard liquid, reaction vessel is equipped with color sensor. The advantages are that: the titration detection can be effectively carried out on the high-temperature soft water, so that whether the processing capacity of the water processing equipment is reduced or not can be judged.

Description

Water hardness monitoring and controlling system of high-temperature water treatment system

Technical Field

The utility model relates to a sewage treatment technical field, in particular to water hardness monitoring and control system of high temperature water treatment system.

Background

In the whole process of the exploitation of the thick oil in the oil field, the steam injection boiler in the oil field is very important energy consumption equipment, and the steam injection boiler has a large number and continuously operates all the year round. The water treatment system of the boiler is one of the keys to the safe and economic operation of the steam injection boiler. If the hardness of boiler intake water is too high all the time, can form the incrustation scale easily on boiler inner wall and pipeline inner wall, seriously influence the combustion efficiency of boiler, corrode the pipe wall, can cause the explosion, explode when serious, threaten people's life safety. Therefore, the detection and control of water hardness are very important in the water treatment process.

At present, most of water for steam injection boilers for exploiting heavy oil in oil fields is softened water obtained by treating oil field sewage through water treatment equipment, the hardness of water coming from a sewage plant is very high, the water treatment equipment is divided into two stages, the water hardness standard of a first-stage outlet is less than or equal to 20mg/l, and the water hardness of a second-stage outlet is less than or equal to 0.1mg/l. The regeneration process of the water treatment equipment is executed in a mode of combining automatic regeneration and manual regeneration after the produced softened water amount reaches a certain set value. And (3) manually testing the water hardness of the primary and secondary water quality of the softener every two hours in a circulating manner, and manually sending a regeneration instruction according to the water hardness value. Because the interval time of manual measurement is long, and the automatic regeneration is judged according to the water production quantity of software, the influence of the performance reduction of the resin can be ignored, and the situations of over-standard water hardness and hardness leakage exist, so that the economic and safe operation of the boiler is influenced.

In order to improve the monitoring of the water supply quality of the steam injection station, facilitate the scientific management of water treatment equipment and reduce the labor intensity of field workers, the water hardness of a primary softened water outlet and a secondary softened water outlet of the water treatment equipment need to be monitored on line, the regeneration process of water treatment is automatically controlled, the centralized monitoring and management of the data of the water treatment equipment are realized, and the automation level and the management level of the treatment station are improved.

The problems to be solved are as follows:

1) The water temperature is high, the water temperature at the water treatment outlet is as high as 70-80 ℃, the environmental temperature is over 40 ℃, the EDTA titration method requires that the water sample temperature and the environmental temperature are both carried out at room temperature, and the hardness value is influenced by the high water sample temperature.

2) The automatic regeneration of the on-site water treatment is automatically executed according to the water quality hardness value, and the manual switching of regeneration equipment is not needed through flow and manual measurement, so that the energy consumption is saved.

3) The second-level hardness qualified value is very small, and the manual testing precision is too low to meet the production requirement. No low-range water quality hardness product of < =0.1mg/l is found in China. The low-range water hardness product of foreign < =0.1mg/l is high in price and is measured by a single way. And low range products and high range products are typically each available on the market. If the water hardness of the primary outlet and the secondary outlet is to be measured, two sets of equipment for detecting the water hardness are required to be bought.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a water hardness monitoring and controlling system of a high-temperature water treatment system is provided, which effectively overcomes the defects of the prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a water hardness monitoring and controlling system of a high-temperature water treatment system comprises a water sample storage and refrigeration device, a reaction container and a control terminal, wherein a liquid inlet of the water sample storage and refrigeration device is connected with a primary treatment unit and a secondary treatment unit of water treatment equipment through a primary sampling pipeline and a secondary sampling pipeline respectively, the primary sampling pipeline and the secondary sampling pipeline are provided with electric control valves respectively, the electric control valves are connected with the control system of the water treatment equipment, the control system is connected with the control terminal, a liquid outlet of the water sample storage and refrigeration device is connected with a liquid inlet of the reaction container, the reaction container is connected with a primary buffer automatic injection system, a chrome black T reagent automatic injection system, a primary EDTA standard liquid automatic injection system, a secondary buffer automatic injection pipeline system, an acid chrome blue K indicating liquid automatic injection system and a secondary EDTA standard liquid automatic injection system which are connected with the control terminal respectively, the reaction container is provided with a stirring structure, and the reaction container is provided with a color sensor connected with the control terminal.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the automatic primary buffer injection system comprises a primary buffer pipeline and a primary buffer pump communicated with the primary buffer pipeline, and the primary buffer pump is connected with the control terminal.

Further, the automatic injection system of the chrome black T reagent comprises a chrome black T reagent pipeline and a first injection pump communicated with the chrome black T reagent pipeline, wherein the first injection pump is connected with the control terminal.

Further, the automatic injection system of the primary EDTA standard solution comprises a primary EDTA standard solution pipeline and a second injection pump communicated with the primary EDTA standard solution pipeline, and the second injection pump is connected with the control terminal.

Further, the automatic secondary buffer injection system comprises a secondary buffer pipeline and a secondary buffer pump communicated with the secondary buffer pipeline, and the secondary buffer pump is connected with the control terminal.

Further, the automatic acid chrome blue K indicating liquid injection system comprises an acid chrome blue K indicating liquid pipeline and a third injection pump communicated with the acid chrome blue K indicating liquid pipeline, and the third injection pump is connected with the control terminal.

Further, the automatic injection system of the secondary EDTA standard solution comprises a secondary EDTA standard solution pipeline and a fourth injection pump communicated with the secondary EDTA standard solution pipeline, and the fourth injection pump is connected with the control terminal.

Further, the liquid outlet of the water sample storage and refrigeration device is connected with the liquid inlet of the reaction container through a sampling pipe, the sampling pipe is sequentially connected with a filter and a sampling pump, and the sampling pump is connected with the control terminal.

Further, above-mentioned water sample storage refrigerating plant includes the box and sets up the refrigeration unit on the box, is equipped with temperature sensor and level sensor in the above-mentioned box, and above-mentioned control terminal is connected with above-mentioned refrigeration unit, temperature sensor and level sensor respectively.

Further, the stirring structure is a magnetic stirrer, and the magnetic stirrer is connected with the control terminal.

The utility model has the advantages that: reasonable in design can carry out effectual titration detection to high temperature soft water to judge whether water treatment facilities's throughput descends.

Drawings

FIG. 1 is a schematic structural view of a water hardness monitoring and controlling system of a high temperature water treatment system of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a water sample storage and refrigeration device; 2. a reaction vessel; 3. a control terminal; 10. a filter; 11. a first stage sampling pipeline; 12. a secondary sampling pipeline; 13. an electrically controlled valve; 31. a color sensor; 41. a primary buffer line; 42. a primary buffer pump; 51. a chrome black T reagent line; 52. a first syringe pump; 61. a first-stage EDTA standard liquid pipeline; 62. a second syringe pump; 71. a secondary buffer line; 72. a secondary buffer pump; 81. acid chrome blue K indicates the liquid pipeline; 82. a third syringe pump; 91. a secondary EDTA standard liquid pipeline; 92. a fourth syringe pump; 101. and a sampling pump.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example (b): as shown in fig. 1, the water hardness monitoring and controlling system of the high temperature water treatment system of this embodiment includes a water sample storage and refrigeration device 1, a reaction vessel 2 and a control terminal 3, wherein a liquid inlet of the water sample storage and refrigeration device 1 is connected to a primary treatment unit and a secondary treatment unit of a water treatment apparatus through a primary sampling line 11 and a secondary sampling line 12, the primary sampling line 11 and the secondary sampling line 12 are respectively provided with an electric control valve 13, the electric control valve 13 is connected to a control system (denoted by a in the figure) of the water treatment apparatus, and the control system is connected to the control terminal 3, a liquid outlet of the water sample storage and refrigeration device 1 is connected to a liquid inlet of the reaction vessel 2, the reaction vessel 2 is connected to a primary buffer automatic injection system, a chrome black T reagent automatic injection system, a primary EDTA standard liquid automatic injection system, a secondary buffer automatic injection line system, an acid chrome blue K indicator automatic injection system and a secondary EDTA standard liquid automatic injection system, which are respectively connected to the control terminal 3, the reaction vessel 2 is provided with a stirring structure, and the reaction vessel 2 is provided with a color sensor 31 connected to the control terminal 3.

The first-stage buffer automatic injection system comprises a first-stage buffer pipeline 41 and a first-stage buffer pump 42 communicated with the first-stage buffer pipeline 41, wherein the first-stage buffer pump 42 is connected with the control terminal 3; the automatic injection system of the chrome black T reagent comprises a chrome black T reagent pipeline 51 and a first injection pump 52 communicated with the chrome black T reagent pipeline 51, wherein the first injection pump 52 is connected with the control terminal 3; the first-stage EDTA standard liquid automatic injection system comprises a first-stage EDTA standard liquid pipeline 61 and a second injection pump 62 communicated with the first-stage EDTA standard liquid pipeline 61, wherein the second injection pump 62 is connected with the control terminal 3; the automatic secondary buffer injection system comprises a secondary buffer pipeline 71 and a secondary buffer pump 72 communicated with the secondary buffer pipeline 71, wherein the secondary buffer pump 72 is connected with the control terminal 3; the automatic acid chrome blue K indicating liquid injection system comprises an acid chrome blue K indicating liquid pipeline 81 and a third injection pump 82 communicated with the acid chrome blue K indicating liquid pipeline 81, wherein the third injection pump 82 is connected with the control terminal 3; the automatic injection system of the secondary EDTA standard solution comprises a secondary EDTA standard solution pipeline 91 and a fourth injection pump 92 communicated with the secondary EDTA standard solution pipeline 91, wherein the fourth injection pump 92 is connected with the control terminal 3.

In this embodiment, an EDTA titration method is used for online monitoring, specifically, the EDTA titration method is also referred to as an "EDTA titration method". A method of complexometric titration. EDTA (i.e., ethylenediaminetetraacetic acid) is a very strong complexing agent that forms stable complexes with many metal ions. The method is based on the complexation reaction of the metal indicator and metal ions, determines the titration end point by adopting the color change of the metal indicator or an electrical and optical method, and calculates the content of the substance to be measured according to the using amount of the standard solution. The method can directly or indirectly determine about 70 elements. Most commonly used for calcium and magnesium determination. The whole system is designed according to a water hardness EDTA titration measuring method in national standard GB/T6909-2018 'determination of hardness of boiler water and cooling water analysis method', and each step of manual laboratory test is accurately finished by using automatic instrument equipment. The specific using process is as follows:

the water temperature of the water treatment equipment (the existing sewage treatment equipment, the specific structure and principle are not described in detail herein) is very high. The temperature of the water sample required by the EDTA standard hardness chemical titration method is required to be 10-40 ℃. Therefore, the water sample is cooled through the water sample storage and refrigeration device 1. Then the reaction vessel 2 is filled with the solution to perform titration reaction. Specifically, taking 100ml of water sample required for EDTA titration as an example, the volume of the reaction container 2 should be much larger than that of the titrated water sample, meanwhile, the volume of the water sample entering the water sample storage and refrigeration device 1 should be much larger than that of the titrated water sample, which can be referred to as 1000ml, in the monitoring process, 100ml of water sample enters the reaction container 2, and after the monitoring is completed, 900ml of water sample remaining in the water sample storage and refrigeration device 1 is used for flushing the subsequent pipeline before and after the test is started and finished. Before monitoring, a control system connected with water treatment equipment learns that a primary sampling pipeline 11 or a secondary sampling pipeline 12 samples, then the information is fed back to a control terminal 3, then the control terminal 3 controls a quantitative water (100 ml) of a water sample storage and refrigeration device 1 to enter a reaction container 2, if the primary sampling pipeline 11 inputs a water sample into the reaction container 2, the control terminal 3 controls a primary buffer pump 42 to be started, a quantitative primary buffer is added into the reaction container 2 to reduce the pH value of the solution (softened water) to be within an obvious color development range (pH is 10), then a first injection pump 52 is controlled to operate to add a quantitative chrome black T reagent into the reaction container 2, finally a second injection pump 62 is controlled to operate a primary EDTA standard liquid added into the reaction container 2, meanwhile, a stirring structure is used for stirring the interior of the reaction container 2 until the liquid in the reaction container 2 is suddenly changed into blue by a color sensor 31, the operation of the second injection pump 62 is stopped, and the control terminal 3 titrates the volume of the chrome black T reagent according to the EDTA concentration, and then the volume of the chrome black T reagent is calculated according to a national hardness value algorithm. If the water sample is input into the reaction container 2 through the secondary sampling pipeline 12, the control terminal 3 sequentially controls the secondary buffer pump 72, the third injection pump 82 and the fourth injection pump 92 to operate according to the method, sequentially adds a quantitative secondary buffer, a quantitative acid chrome blue K indicating liquid and secondary EDTA into the reaction container 2 until the liquid in the reaction container 2 turns blue, and calculates the hardness value of the soft water according to data and an algorithm.

It needs to be added that: when the first-stage EDTA or the second-stage EDTA is added, the mixture is stirred and titrated, wherein the buffer is colorless, the soft water has hardness and turns red after the chromium black T or the acidic chromium blue K indicator solution is added, and the blue is mutated by subsequently titrating the first-stage or second-stage EDTA (the specific titration color-changing principle is the prior art, and is not described herein any more).

In a preferred embodiment, the liquid outlet of the sample storage refrigeration apparatus 1 is connected to the liquid inlet of the reaction vessel 2 via a sampling tube, the sampling tube is connected to a filter 10 and a sampling pump 101 in this order, and the sampling pump 101 is connected to the control terminal 3.

In the above embodiment, control terminal 3 controls the operation of sampling pump 101 to add quantitative water sample in to reaction vessel 2, in addition, because water sample oiliness or suspended solid are too much, can influence the measuring accuracy, consequently, set up filter 10 on the sampling tube and get rid of suspended solid and oil, thereby guarantee the precision of test.

The filter 10 described above employs a prior art Y-strainer.

As a preferred embodiment, the water sample storage and refrigeration device 1 includes a box body and a refrigeration unit disposed on the box body, a temperature sensor and a liquid level sensor are disposed in the box body, and the control terminal 3 is connected to the refrigeration unit, the temperature sensor and the liquid level sensor respectively.

Among the above-mentioned embodiment, water sample storage refrigerating plant 1 is cooled down through the water sample of refrigeration unit to inside, and general water sample temperature requires at 10 ~ 40 ℃, can not influence the monitoring of hardness, through the inside temperature variation of temperature sensor monitoring, ensures that the water sample temperature is up to standard, simultaneously, through level sensor control water sample storage refrigerating plant 1 to the transport water sample in the reaction vessel 2 and get into its inside water sample volume.

Of course, a pH sensor may be further disposed in the box body for monitoring the pH value of the water sample, and a pH sensor may also be disposed in the reaction container 2, so that under the joint monitoring of the two pH sensors, the injection amount of the buffer is determined, and the pH of the reaction container 2 is ensured to be 10 after the buffer is added.

In the water sample storage and refrigeration device 1, the refrigeration unit can be a combined structure of the semiconductor refrigeration sheet and the cooling fan and is arranged on the surface of the box body, a tubular heat exchanger can also be connected to the liquid inlet of the box body, the water sample can be subjected to heat exchange cooling when passing through the tubular heat exchanger, and the box body is not required to be additionally arranged.

In this embodiment, the control terminal 3 is further connected to a remote monitoring center (denoted by b in the figure) through a line or wirelessly, and the remote monitoring center receives the field real-time data to realize functions of data storage, display, alarm and the like.

In this embodiment, the stirring structure is a magnetic stirrer, and the magnetic stirrer is connected to the control terminal 3 and is controlled by the control terminal 3 to operate.

In this embodiment, the first-stage sampling pipeline 11 and the second-stage sampling pipeline 12 are respectively provided with three sets, one set for two purposes.

In this embodiment, the box and the reaction vessel 2 of the water sample storage and refrigeration device 1 are both provided with a blowoff valve.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a high temperature water treatment system water hardness monitoring control system which characterized in that: the device comprises a water sample storage and refrigeration device (1), a reaction container (2) and a control terminal (3), wherein a liquid inlet of the water sample storage and refrigeration device (1) is connected with a primary treatment unit and a secondary treatment unit of a water treatment device through a primary sampling pipeline (11) and a secondary sampling pipeline (12) respectively, the primary sampling pipeline (11) and the secondary sampling pipeline (12) are provided with electric control valves (13) respectively, the electric control valves (13) are connected with a control system of the water treatment device, the control system is connected with the control terminal (3), a liquid outlet of the water sample storage and refrigeration device (1) is connected with a liquid inlet of the reaction container (2), the reaction container (2) is connected with a primary buffer automatic injection system, a chrome black T reagent automatic injection system, a primary EDTA (EDTA) standard liquid automatic injection system, a secondary buffer automatic injection pipeline system, an acid chrome blue K indicator liquid automatic injection system and a secondary EDTA standard liquid automatic injection system which are connected with the control terminal (3) respectively, the reaction container (2) is provided with a stirring structure, and the reaction container (2) is provided with a color sensor (31) connected with the control terminal (3).

2. The system for monitoring and controlling the water hardness of the high-temperature water treatment system according to claim 1, characterized in that: the automatic primary buffer injection system comprises a primary buffer pipeline (41) and a primary buffer pump (42) which is communicated with the primary buffer pipeline (41), wherein the primary buffer pump (42) is connected with the control terminal (3).

3. The system for monitoring and controlling the water hardness of the high-temperature water treatment system according to claim 1, characterized in that: the automatic chrome black T reagent injection system comprises a chrome black T reagent pipeline (51) and a first injection pump (52) communicated with and arranged on the chrome black T reagent pipeline (51), wherein the first injection pump (52) is connected with the control terminal (3).

4. The system for monitoring and controlling the water hardness of the high-temperature water treatment system according to claim 1, characterized in that: the first-stage EDTA standard liquid automatic injection system comprises a first-stage EDTA standard liquid pipeline (61) and a second injection pump (62) which is communicated with the first-stage EDTA standard liquid pipeline (61), and the second injection pump (62) is connected with the control terminal (3).

5. The system for monitoring and controlling the water hardness of the high-temperature water treatment system according to claim 1, characterized in that: the automatic secondary buffer injection system comprises a secondary buffer pipeline (71) and a secondary buffer pump (72) which is communicated with the secondary buffer pipeline (71), wherein the secondary buffer pump (72) is connected with the control terminal (3).

6. The system for monitoring and controlling the water hardness of the high-temperature water treatment system according to claim 1, characterized in that: the automatic acid chrome blue K indicating liquid injection system comprises an acid chrome blue K indicating liquid pipeline (81) and a third injection pump (82) communicated with and arranged on the acid chrome blue K indicating liquid pipeline (81), and the third injection pump (82) is connected with the control terminal (3).

7. The system for monitoring and controlling the water hardness of the high-temperature water treatment system according to claim 1, characterized in that: the automatic secondary EDTA standard liquid injection system comprises a secondary EDTA standard liquid pipeline (91) and a fourth injection pump (92) communicated with and arranged on the secondary EDTA standard liquid pipeline (91), and the fourth injection pump (92) is connected with the control terminal (3).

8. The system for monitoring and controlling the hardness of water in the high-temperature water treatment system according to any one of claims 1 to 7, wherein: the leakage fluid dram of water sample storage refrigerating plant (1) passes through the sampling tube and connects the inlet of reaction vessel (2), be connected with filter (10) and sampling pump (101) on the sampling tube in order, sampling pump (101) with control terminal (3) are connected.

9. The system for monitoring and controlling the hardness of water in a high-temperature water treatment system according to any one of claims 1 to 7, wherein: water sample storage refrigerating plant (1) includes the box and sets up the refrigeration unit on the box, be equipped with temperature sensor and level sensor in the box, control terminal (3) respectively with refrigeration unit, temperature sensor and level sensor are connected.

10. The system for monitoring and controlling the hardness of water in the high-temperature water treatment system according to any one of claims 1 to 7, wherein: the stirring structure is a magnetic stirrer, and the magnetic stirrer is connected with the control terminal (3).