Acid liquid performance detection device and use method thereof

Abstract

The invention discloses an acid liquid performance detection device and a use method thereof, and relates to the technical field of shale oil production or shale gas production construction.The acid liquid performance detection device comprises a base table, a side plate is connected to the base table, and a supporting plate is connected to the top of the side plate; an inner cavity with an opening in the top is formed in the side plate, an alkali liquor storage cavity is formed in the inner cavity, and a liquor inlet pipe is connected into the alkali liquor storage cavity; the liquid inlet pipe is connected with a suction pipe through an adapter, the suction pipe is connected with a burette, and the suction pipe is connected with a suction pump; a detection kettle is installed on the base station, a pH meter is connected to the supporting plate, and the detection end of the pH meter extends into the detection kettle; and the top of the side plate is connected with a control switch for controlling the base station, the suction pump and the pH meter to start. In the using process, people do not need to make contact with the sodium hydroxide solution, harm to the human body is avoided, meanwhile, the mode of electrically titrating the alkali liquor is adopted, the workload of workers is reduced, personal errors are avoided, the accuracy of the detection result is improved, the automation degree is high, and the device is suitable for rapid on-site detection.

Description

Technical Field

[0001] The invention relates to the technical field of shale oil production or shale gas production construction, and in particular to an acid liquid performance detection device and a use method thereof. Background Art

[0002] With the development of society, the consumption of natural gas energy is also increasing. Shale gas is an unconventional natural gas stored in organic-rich shale. China has a vast territory, and the recoverable reserves of shale gas in our country are relatively large. Therefore, the development of shale gas collection technology is of great significance to China.

[0003] Acidizing is a common production-increasing and transformation measure in the process of shale oil or shale gas production, which uses gelled acid, autogenous acid, soil acid and other acidic liquids to react with rock formations in the formation to form acid-etched wormholes, thereby increasing the permeability of the rock formation and improving the efficiency of oil and gas production. The acid used in the acidizing site mainly includes original acid and various additives. The quality of the acid directly determines the effect of the acidizing construction and the efficiency of subsequent production. The quality of the acid must be tested before entering the well. Among them, the acid concentration, that is, the hydrogen ion concentration per unit volume of acid, is the most important parameter of the acid. It must be within the designed range to ensure the smooth implementation of the acidizing construction. In the current context of large-scale increase in reserves and production of unconventional gas reservoirs, acidizing is widely used as an important production-increasing and transformation measure worldwide. As one of the indicators of the acidizing process, the acid concentration is an important indicator in the acidizing liquid detection work and a link to support the smooth construction of acidizing.

[0004] At home and abroad, the quality control of acid solution at the acidification site is usually carried out by manual titration to detect the acid solution concentration. First, use a glass pipette to take 1mL of acid solution and place it in a conical glass bottle. Then, inject 15mL of distilled water into the conical bottle and mix it (whether it is conventional acid, gelled acid, or steering acid, it is required to be mixed evenly without sediment and flocculation). Then, drop 2-3 drops of phenolphthalein indicator solution into the bottle. The sample to be tested is now ready. Take an alkaline glass burette and inject the sodium hydroxide standard solution. Place it on the titration table and fix it in a suitable position with a butterfly clip. Place the conical glass bottle (tested sample) under the burette. When the titration starts, drip the sodium hydroxide standard solution into the conical bottle at a uniform speed while shaking the conical bottle at a uniform speed to quickly mix the sodium hydroxide standard solution with the tested sample. Stop the titration when the tested sample begins to change color and stabilizes at a light rose red. And calculate the consumption of the sodium hydroxide standard solution, and obtain the acid solution concentration result by calculation.

[0005] Although the current detection method is simple, it has the following disadvantages: (1) This method uses manual titration, and the volatilization and splashing of acid will cause adverse factors to the health of the testers; (2) Manual titration requires manual operation and visual inspection by the testers, and the results obtained are relatively error-prone; (3) This method has a low degree of automation, which is not conducive to the development of on-site detection technology; (4) Most of the equipment is glass instruments that are fragile and difficult to preserve, and are not suitable for rapid on-site testing. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the current acid performance detection method has the problems of being dangerous to operate, having large errors in the detection results, having a low degree of automation, and being not suitable for rapid on-site detection. The purpose is to provide an acid performance detection device and a method of using the same, which solves the problem that the current acid performance detection method has the problems of being dangerous to operate, having large errors in the detection results, having a low degree of automation, and being not suitable for rapid on-site detection.

[0007] The present invention is achieved through the following technical solutions:

[0008] In a first aspect, the present application proposes an acid performance detection device, comprising a base, a side plate connected to the base, a support plate connected to the top of the side plate; an inner cavity with a top opening is provided on the side plate, an alkali liquid storage cavity is installed in the inner cavity, a liquid inlet pipe is connected to the alkali liquid storage cavity; the liquid inlet pipe is connected to a suction pipe through an adapter, the suction pipe is connected to a burette, and a suction pump is connected to the suction pipe;

[0009] A detection kettle is installed on the base, a pH meter is connected to the support plate, and a detection end of the pH meter extends into the detection kettle; a control switch for controlling the base, a suction pump, and the pH meter is connected to the top of the side plate.

[0010] The alkali solution stored in the alkali solution storage chamber can be a sodium hydroxide solution.

[0011] Among them, except for the electrical components, all other parts in the device are made of acid-resistant materials, and the pH meter is made of acid-resistant metal material.

[0012] Before use, the operator first measures the density of the acid to be tested, and then lifts the suction tube upwards, and then lifts the liquid inlet tube, the burette, and the suction pump connected to the suction tube together, and then takes out the alkali solution storage chamber in the inner cavity, fills the alkali solution storage chamber with sodium hydroxide solution and then puts it into the inner cavity, and finally inserts the liquid inlet tube into the alkali solution storage chamber. At this time, the suction tube and the burette are also restored to their original positions. After installation, the test can be carried out.

[0013] During the use of the device, there is no need for human contact with the sodium hydroxide solution, thus avoiding harm to the human body. At the same time, the electric titration of the alkali solution is adopted to reduce the workload of the staff, avoid human errors, and improve the accuracy of the test results. Compared with the existing detection methods, the degree of automation has been improved, which is suitable for the rapid development of on-site detection.

[0014] Furthermore, the suction pump and pH meter are both communicatively connected to a PLC controller.

[0015] The suction pump and the pH meter are connected to the PLC controller for communication. After the pH meter detects that the pH value of the solution after titration reaches the requirement, the pH meter transmits the signal to the PLC controller, and the PLC controller transmits the signal to the suction pump to stop the suction pump automatically. This eliminates the need for manual operation or observation by the staff, further improving the degree of automation of the equipment, while also reducing the error of the test results and improving the accuracy of the test results.

[0016] Furthermore, a detection data display screen is connected to the top of the side panel.

[0017] The test data display screen connected to the top of the side panel makes it easy for the staff to observe the data of the solution during the test, so that the staff can understand the test data of the mixed solution in real time. Through the effects of both automated testing and manual monitoring, the test error is further reduced and the accuracy of the test results is improved.

[0018] Furthermore, the adapter used between the liquid inlet pipe and the suction pipe is a two-way adapter, the two-way adapter is connected to an infusion pipe for conveying alkali solution, and the infusion pipe and the suction pipe are both connected to control valves.

[0019] By adopting a two-way adapter, the adapter can be connected to two pipes. By connecting an infusion tube for conveying alkali solution to the two-way adapter, the alkali solution can be directly conveyed to the alkali solution storage chamber through the infusion tube. There is no need to disassemble the alkali solution storage chamber and take out the alkali solution. This makes it more convenient for workers to add alkali solution and the operation efficiency is higher. At the same time, it also further avoids the workers from being exposed to the alkali solution during the process of adding alkali solution, which may cause damage to their health.

[0020] The volume of the alkaline solution storage chamber needs to be sufficient to carry out the standard 1mM acid solution concentration detection experiment more than 3 times.

[0021] Furthermore, both the infusion tube and the suction tube are connected with flow meters.

[0022] By connecting a flow meter to the infusion tube, the amount of alkali liquid entering the alkali liquid storage chamber can be displayed by the flow meter, which is convenient for the staff to control it. The control valve on the infusion tube can also be connected to the flow meter through the PLC controller signal to achieve the effect of automatically controlling the liquid intake amount, further improving the automation function of the device.

[0023] By connecting a flow meter to the suction pipe, the amount of the extracted alkali solution can be observed through the flow meter.

[0024] Furthermore, the burette and the suction tube are connected by threads; and the end of the pH meter and the support plate are connected by threads.

[0025] The burette and the suction tube are connected by thread, and the pH meter and the support plate are connected by thread, so that the burette and the pH meter are easy to install and disassemble.

[0026] Furthermore, it also includes an acid liquid configuration structure, which includes a configuration kettle, a stirring structure is connected inside the configuration kettle, and a liquid inlet pipe and a liquid outlet pipe are connected to the configuration kettle; a single-dose addition structure is connected to the top of the configuration kettle; and a density meter and a viscometer are also connected inside the configuration kettle.

[0027] Furthermore, the stirring structure includes a stirring shaft connected to the configuration kettle, the stirring shaft is connected to stirring blades, and the stirring shaft extending to the outside of the configuration kettle is connected to a motor for driving the stirring shaft to rotate.

[0028] Furthermore, the single-dose adding structure includes a single-dose adding pipe connected to the configuration kettle, a control valve is connected to the single-dose adding pipe, and the single-dose adding pipe is connected to the single-dose reserve tank.

[0029] The single agents include gelling agent, corrosion inhibitor, drainage aid, etc.

[0030] When using the preparation device to prepare the solution, add the acid solution to be prepared into the preparation kettle, start the motor, drive the stirring shaft to rotate, and then add a single dose into the preparation kettle to quickly mix the single dose with the acid solution. By observing the data on the density meter and viscometer, the density and viscosity of the prepared liquid can be obtained.

[0031] By connecting the acid liquid configuration structure, when the acid liquid needs to be configured, the structure can be directly used for configuration, and the configured acid liquid can be directly sent to the detection attachment for detection, without the need to transfer and transport the acid liquid, thereby further improving the work efficiency. The configuration structure is simple, the production cost is low, and it is also very convenient to use. The stirring structure connected to the configuration kettle enables the acid liquid to quickly mix the alkali liquid with the single agent, thereby improving the configuration efficiency.

[0032] In a second aspect, the present application proposes a method for using an acid performance detection device, comprising the following steps:

[0033] Step 1: Use the acid solution configuration structure to configure the acid solution, and add the configured acid solution into the detection kettle, add a magnetic stirrer into the detection kettle, and add distilled water so that the pH meter can be immersed in the liquid;

[0034] Step 2: Turn on the power supply and turn on the control switch to operate the base station, suction pump and pH meter. The suction pump draws the alkali solution into the detection kettle, stirs and mixes the alkali solution and the acid solution with a magnetic stirrer, and then uses the pH meter to detect the pH of the mixed solution. When the pH meter detects that the pH value of the liquid in the detection kettle exceeds 7, the pH meter transmits a signal to stop the suction pump, that is, stop dripping the alkali solution into the detection kettle.

[0035] Step 3: After stopping the titration, if the pH value exceeds 7 for 30 seconds, the experiment is terminated; otherwise, the suction pump is turned on and the operation in step 2 is repeated;

[0036] Step 4: Calculate the concentration of the acid solution. The concentration calculation formula is:

[0037] Where ω1 represents the acid concentration;

[0038] V represents the volume of the lye solution;

[0039] c represents the concentration of alkali solution;

[0040] M = 36.46;

[0041] m1 represents the mass of the acid.

[0042] The calculation formula in step 4 can also be imported into the device through programming technology, so that the test results can be displayed on the display screen immediately after the test is completed. This eliminates the need for staff to calculate the test data, reduces the staff's operating procedures, and avoids errors made by staff during the calculation process that lead to deviations in the calculation results.

[0043] The suction pump sucks the liquid at a titration speed of 0.1 ml / s, and the droplets are discontinuous.

[0044] Among them, the magnetic stirring bar is made of acid-resistant metal.

[0045] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0046] (1) During the use of the device, there is no need for human contact with the sodium hydroxide solution, thus avoiding harm to the human body. At the same time, the electric titration of the alkali solution is adopted, which reduces the workload of the staff, avoids human errors, and improves the accuracy of the test results. Compared with the existing detection methods, the degree of automation is improved, which is suitable for the rapid development of on-site detection;

[0047] (2) The suction pump and the pH meter are connected to the PLC controller for communication. When the pH meter detects that the pH value of the solution after titration reaches the requirement, the pH meter transmits a signal to the PLC controller, and the PLC controller transmits a signal to the suction pump, so that the suction pump stops automatically. This eliminates the need for manual operation or observation by the staff, further improving the automation of the equipment, and also reducing the error of the test results, thereby improving the accuracy of the test results.

[0048] (3) The test data display screen connected to the top of the side panel is convenient for the staff to observe the data of the solution during the test process, so that the staff can understand the test data of the mixed solution in real time. Through the effects of automated testing and manual monitoring, the test error is further reduced and the accuracy of the test results is improved;

[0049] (4) A two-way adapter is used to connect two pipes. By connecting the infusion tube for conveying alkali solution to the two-way adapter, the alkali solution can be directly conveyed into the alkali solution storage chamber through the infusion tube, without the need to disassemble the alkali solution storage chamber and take out the alkali solution, which makes it more convenient for the staff to add the alkali solution and improves the operation efficiency. At the same time, it also further avoids the staff from contacting the alkali solution during the process of adding the alkali solution, which may cause damage to their health.

[0050] (5) By connecting a flow meter to the infusion tube, the amount of alkali liquid entering the alkali liquid storage chamber can be displayed by the flow meter, which is convenient for the staff to control it. The control valve on the infusion tube can also be connected to the flow meter through the PLC controller signal to achieve the effect of automatically controlling the amount of liquid entering, further improving the automation function of the device;

[0051] (6) The burette and the suction tube are connected by threaded connection, and the pH meter and the support plate are connected by threaded connection, so that the burette and the pH meter are easy to install and disassemble;

[0052] (7) By connecting the acid liquid configuration structure, when the acid liquid needs to be configured, the structure can be directly used for configuration, and the configured acid liquid can be directly sent to the detection attachment for detection, without the need to transfer and transport the acid liquid, thereby further improving work efficiency. In addition, the configuration structure is simple, the manufacturing cost is low, and it is also very convenient to use. The stirring structure connected to the configuration kettle enables the acid liquid to quickly mix the alkali liquid with the single agent, thereby improving the configuration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0054] Figure 1 It is a structural schematic diagram of an acid liquid performance detection device in the present invention;

[0055] Figure 2 for Figure 1 A top view of an acid performance detection device;

[0056] Figure 3 It is a structural schematic diagram of the acid solution configuration structure in the present invention.

[0057] Marks and corresponding parts names in the attached drawings:

[0058] 01- base, 02- detection kettle, 03- burette, 04- support plate, 05- suction tube, 06- suction pump, 07- detection data display screen, 08- control switch, 09- side panel, 10- liquid inlet pipe, 11- alkali solution storage chamber, 12- pH meter, 13- magnetic stirring bar, 14- infusion tube, 15- liquid outlet pipe, 16- configuration kettle, 17- density meter, 18- viscometer, 19- motor, 20- single dose reserve tank, 21- single dose addition tube, 22- liquid inlet pipe, 23- stirring shaft, 24- stirring blade. DETAILED DESCRIPTION

[0059] 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, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0060] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0061] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, a connection or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] Example 1

[0064] like Figure 1 As shown, this embodiment provides an acid performance detection device, including a base 01, the base 01 is connected to a side plate 09, and the top of the side plate 09 is connected to a support plate 04; the side plate 09 is provided with an inner cavity with a top opening, an alkali liquid storage cavity 11 is installed in the inner cavity, and an inlet pipe 10 is connected to the alkali liquid storage cavity 11; the inlet pipe 10 is connected to a suction pipe 05 through an adapter, the suction pipe 05 is connected to a burette 03, and a suction pump 06 is connected to the suction pipe 05;

[0065] A detection kettle 02 is installed on the base 01, a pH meter 12 is connected to the support plate 04, and the detection end of the pH meter 12 extends into the detection kettle 02; a control switch 08 for controlling the base 01, the suction pump 06, and the pH meter 12 is connected to the top of the side plate 09.

[0066] The alkali solution stored in the alkali solution storage chamber 11 is a sodium hydroxide solution.

[0067] Specifically, the suction pump 06 and the pH meter 12 are both connected to the PLC controller in communication. The suction pump 06 and the pH meter 12 are connected to the PLC controller in communication, and after the pH meter 12 detects that the pH value of the solution after titration reaches the requirement, the pH meter 12 transmits a signal to the PLC controller, and then the PLC controller transmits a signal to the suction pump 06, so that the suction pump 06 stops automatically, which eliminates the need for manual operation or observation by the staff, further improves the automation of the equipment, and also reduces the error of the test results, thereby improving the accuracy of the test results.

[0068] Specifically, a detection data display screen 07 is also connected to the top of the side plate 09. The detection data display screen 07 connected to the top of the side plate 09 is convenient for the staff to observe the data of the solution during the detection process, so that the staff can understand the detection data of the mixed solution in real time, and through the effects of automated detection and manual monitoring, the detection error is further reduced and the accuracy of the detection result is improved.

[0069] Before using the detection device, the operator first measures the density of the acid solution to be detected, and then lifts the suction tube 05 upwards, and then lifts the liquid inlet tube 10 connected to the suction tube 05, the burette 03, and the suction pump 06 connected to the suction tube 05 together, and then takes out the alkali solution storage chamber 11 in the inner cavity, and then fills the alkali solution storage chamber 11 with sodium hydroxide solution and then puts it into the inner cavity, and finally inserts the liquid inlet tube 10 into the alkali solution storage chamber 11. At this time, the suction tube 05 and the burette 03 are also restored to their original positions. After installation, the detection can be carried out.

[0070] During the use of the device, there is no need for human contact with the sodium hydroxide solution, thus avoiding harm to the human body. At the same time, the electric titration of the alkali solution is adopted to reduce the workload of the staff, avoid human errors, and improve the accuracy of the test results. Compared with the existing detection methods, the degree of automation has been improved, which is suitable for the rapid development of on-site detection.

[0071] The method for using the acid liquid performance detection device in this embodiment comprises the following steps:

[0072] Step 1: Add the prepared acid solution into the detection kettle 02, add a magnetic stirrer 13 into the detection kettle 02, and add distilled water at the same time so that the pH meter 12 can be immersed in the liquid;

[0073] Step 2: Turn on the power supply, turn on the control switch 08, and operate the base 01, the suction pump 06 and the pH meter 12. The suction pump 06 draws the alkali solution into the detection kettle 02, stirs and mixes the alkali solution and the acid solution through the magnetic stirrer 13, and then detects the pH value of the mixed solution through the pH meter 12; when the pH meter 12 detects that the pH value of the liquid in the detection kettle 02 exceeds 7, the pH meter 12 stops the suction pump 06 through signal transmission, that is, stops dripping the alkali solution into the detection kettle 02;

[0074] Step 3: After stopping the titration, if the pH value exceeds 7 and remains for 30 seconds, the experiment is terminated; otherwise, the suction pump 06 is turned on and the operation in step 2 is repeated;

[0075] Step 4: Calculate the concentration of the acid solution. The concentration calculation formula is:

[0076] Where ω1 represents the acid concentration;

[0077] V represents the volume of the lye solution;

[0078] c represents the concentration of alkali solution;

[0079] M = 36.46;

[0080] m1 represents the mass of the acid.

[0081] In field use, under normal temperature conditions, the acid concentration is divided into 3 levels for evaluation, as shown in the following table:

[0082] <![CDATA[Range of ω1 value]]> Viscosity Range <![CDATA[ω1≤18%]]> Low <![CDATA[18%≤ω1≤22%]]> middle <![CDATA[ω1≥22%]]> high

[0083] The detection device and detection method in Example 1 tested the acid density to be 1.108 g / cm 3 The specific operation is as follows:

[0084] (1) Take 1 ml of gelled acid and add it to the detection kettle 02. Add a magnetic stirrer 13 to the detection kettle 02 and add distilled water so that the pH meter 12 can be immersed in the liquid.

[0085] (2) Turn on the power supply and turn on the control switch 08 to operate the base station 01, the suction pump 06 and the pH meter 12. The suction pump 06 draws the alkali solution with a molar concentration of 1 mol / L into the detection kettle 02. The alkali solution and the acid solution are stirred and mixed by the magnetic stirrer 13, and then the pH meter 12 detects the pH value of the mixed solution. When the pH meter 12 detects that the pH value of the liquid in the detection kettle 02 exceeds 7, the pH meter 12 transmits a signal to stop the suction pump 06, that is, stop dripping the alkali solution into the detection kettle 02. At this time, the volume of the consumed alkali solution is 6.05 ml.

[0086] (3) After the titration is stopped, the pH value remains above 7 for 30 seconds, and the experiment is terminated.

[0087] (4) Calculate the concentration of the acid solution. The concentration calculation formula is:

[0088]

[0089] ω1 represents the acid concentration;

[0090] V represents the volume of the alkali solution, which is 6.05 ml;

[0091] c represents the concentration of alkali solution, which is 1 mol / L;

[0092] M = 36.46;

[0093] m1 represents the mass of the acid solution; it is 1.108g.

[0094] The above formula is used to calculate that the concentration of ω1 acid solution is 20%.

[0095] According to the acid concentration grade table, its concentration is medium.

[0096] Example 2

[0097] Based on Example 1, this example provides an acid liquid performance detection device. The difference from Example 1 is that flow meters are connected to the infusion tube 14 and the suction tube 05 in this example.

[0098] Compared with Example 1, this embodiment can display the amount of alkali solution entering the alkali solution storage chamber 11 by connecting a flow meter to the infusion tube 14, which is convenient for the staff to control it. The control valve on the infusion tube 14 can also be connected to the flow meter through a PLC controller signal to achieve the effect of automatically controlling the amount of liquid entering, further improving the automation function of the device. By connecting a flow meter to the suction tube 05, the amount of alkali solution extracted can be observed through the flow meter.

[0099] Example 3

[0100] Based on Example 2, this example provides an acid performance detection device. Different from Example 2, in this example, the burette 03 and the suction tube 05 are connected by threads; the end of the pH meter 12 and the support plate 04 are connected by threads.

[0101] Compared with Example 2, in this embodiment, the burette 03 and the suction tube 05 are connected by threads, and the pH meter 12 and the support plate 04 are connected by threads, so that the burette 03 and the pH meter 12 are easy to install and disassemble.

[0102] Example 4

[0103] like Figure 2 As shown, based on Example 3, this example provides an acid performance detection device. The difference from Example 3 is that the adapter used between the liquid inlet pipe 10 and the suction pipe 05 in this example is a two-way adapter, and the two-way adapter is connected to a liquid infusion pipe 14 for conveying alkali solution, and both the liquid infusion pipe 14 and the suction pipe 05 are connected to control valves.

[0104] Compared with the acid performance detection device in Example 3, this embodiment adopts a two-way adapter, which can connect the two pipes. By connecting the infusion tube 14 for conveying alkali solution to the two-way adapter, the alkali solution can be directly conveyed to the alkali solution storage chamber 11 through the infusion tube 14, and there is no need to disassemble the alkali solution storage chamber 11 and take out the alkali solution, which makes it more convenient for the staff to add alkali solution and the operation efficiency is higher. At the same time, it also further avoids the staff from contacting with the alkali solution during the process of adding alkali solution, causing damage to their health.

[0105] Example 5

[0106] like Figure 3 As shown, based on Example 4, this embodiment provides an acid liquid performance detection device. Different from Example 4, this embodiment also includes an acid liquid configuration structure, the acid liquid configuration structure includes a configuration kettle 16, a stirring structure is connected inside the configuration kettle 16, a liquid inlet pipe 22 and a liquid outlet pipe 15 are connected to the configuration kettle 16; a single-dose addition structure is connected to the top of the configuration kettle 16; and a density meter 17 and a viscometer 18 are also connected inside the configuration kettle 16.

[0107] Specifically, the stirring structure includes a stirring shaft 23 connected to the configuration kettle 16 , a stirring blade 24 is connected to the stirring shaft 23 , and a motor 19 for driving the stirring shaft 23 to rotate is connected to the stirring shaft 23 extending to the outside of the configuration kettle 16 .

[0108] Specifically, the single-dose adding structure includes a single-dose adding pipe 21 connected to the configuration kettle 16 , a control valve is connected to the single-dose adding pipe 21 , and the single-dose adding pipe 21 is connected to the single-dose reserve tank 20 .

[0109] When the preparation device is used to prepare a solution, the acid solution to be prepared is added into the preparation kettle 16, the motor 19 is started, the motor 19 drives the stirring shaft 23 to rotate, and then a single dose is added into the preparation kettle 16, so that the single dose and the acid solution can be quickly mixed. By observing the data on the density meter 17 and the viscometer 18, the density and viscosity of the prepared liquid can be obtained.

[0110] Compared with Example 4, this embodiment connects the acid liquid configuration structure. When the acid liquid needs to be configured, the structure can be directly used for configuration, and the configured acid liquid is directly sent to the detection attachment for detection. There is no need to transfer and transport the acid liquid, which further improves the work efficiency. The configuration structure is simple, the production cost is low, and it is very convenient to use. The stirring structure connected to the configuration kettle 16 enables the acid liquid to quickly mix the alkali liquid and the single dose, thereby improving the configuration efficiency.

[0111] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An acid performance detection device, characterized in that: The invention comprises a base (01), the base (01) is connected to a side plate (09), the top of the side plate (09) is connected to a support plate (04); the side plate (09) is provided with an inner cavity with an opening at the top, an alkali liquid storage cavity (11) is installed in the inner cavity, and a liquid inlet pipe (10) is connected to the alkali liquid storage cavity (11); the liquid inlet pipe (10) is connected to a suction pipe (05) through an adapter, the suction pipe (05) is connected to a burette (03), and a suction pump (06) is connected to the suction pipe (05); A detection kettle (02) is installed on the base (01), a pH meter (12) is connected to the support plate (04), and a detection end of the pH meter (12) extends into the detection kettle (02); a control switch (08) for controlling the base (01), the suction pump (06), and the pH meter (12) to be turned on is connected to the top of the side plate (09).

2. The acid liquid performance detection device according to claim 1, characterized in that: The suction pump (06) and pH meter (12) are both communicatively connected to the PLC controller.

3. The acid liquid performance detection device according to claim 1, characterized in that: The top of the side plate (09) is also connected to a detection data display screen (07).

4. The acid liquid performance detection device according to claim 1, characterized in that: The adapter used between the liquid inlet pipe (10) and the suction pipe (05) is a two-way adapter, and the two-way adapter is connected to a liquid infusion pipe (14) for conveying alkali solution, and the liquid infusion pipe (14) and the suction pipe (05) are both connected to control valves.

5. The acid liquid performance detection device according to claim 4, characterized in that: The infusion tube (14) and the suction tube (05) are both connected to flow meters.

6. The acid liquid performance detection device according to claim 1, characterized in that: The burette (03) and the suction tube (05) are connected by threads; the end of the pH meter (12) and the support plate (04) are connected by threads.

7. The acid liquid performance detection device according to claim 1, characterized in that: The acid liquid configuration structure also includes an acid liquid configuration structure, which includes a configuration kettle (16), a stirring structure is connected inside the configuration kettle (16), a liquid inlet pipe (22) and a liquid outlet pipe (15) are connected to the configuration kettle (16); a single-dose addition structure is connected to the top of the configuration kettle (16); and a density meter (17) and a viscometer (18) are also connected inside the configuration kettle (16).

8. The acid liquid performance detection device according to claim 7, characterized in that: The stirring structure comprises a stirring shaft (23) connected to the configuration kettle (16), a stirring blade (24) being connected to the stirring shaft (23), and a motor (19) for driving the stirring shaft (23) to rotate being connected to the stirring shaft (23) extending to the outside of the configuration kettle (16).

9. The acid liquid performance detection device according to claim 7, characterized in that: The single-dose adding structure comprises a single-dose adding pipe (21) connected to the configuration kettle (16), a control valve is connected to the single-dose adding pipe (21), and the single-dose adding pipe (21) is connected to the single-dose reserve tank (20).

10. A method for using the acid liquid performance detection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Add the prepared acid solution into the detection kettle (02), add a magnetic stirrer (13) into the detection kettle (02), and add distilled water so that the pH meter (12) can be immersed in the liquid; Step 2: Turn on the power supply, turn on the control switch (08), and operate the base (01), the suction pump (06) and the pH meter (12). The suction pump (06) draws the alkali solution into the detection kettle (02), stirs and mixes the alkali solution and the acid solution by the magnetic stirrer (13), and then detects the acidity of the mixed solution by the pH meter (12); when the pH meter (12) detects that the pH value of the liquid in the detection kettle (02) exceeds 7, the pH meter (12) stops the suction pump (06) through signal transmission, that is, stops dripping the alkali solution into the detection kettle (02); Step 3: After the titration is stopped, if the pH value exceeds 7 and remains for 30 seconds, the experiment is terminated; otherwise, the suction pump (06) is turned on and the operation in step 2 is repeated; Step 4: Calculate the concentration of the acid solution. The concentration calculation formula is: Where ω1 represents the acid concentration; V represents the volume of the lye solution; c represents the concentration of alkali solution; M＝36.46； m1 represents the mass of the acid.

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