CN111693339A - Device and sampling method suitable for sampling sulfuric acid in lead-acid storage battery - Google Patents
Device and sampling method suitable for sampling sulfuric acid in lead-acid storage battery Download PDFInfo
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- CN111693339A CN111693339A CN202010455503.3A CN202010455503A CN111693339A CN 111693339 A CN111693339 A CN 111693339A CN 202010455503 A CN202010455503 A CN 202010455503A CN 111693339 A CN111693339 A CN 111693339A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
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Abstract
The invention relates to a sulfuric acid sampling device and a sampling method suitable for a lead-acid storage battery, the device comprises a sampling cabin and a motor, the sampling cabin and the motor are fixed above a base through a cabin frame and a motor support respectively, the sampling cabin is composed of a main cabin body and a cabin cover arranged at the top, two ends of the main cabin body are supported with coaxial rotating shafts through bearings, a partition board mounting frame is connected between the rotating shafts at the two ends, one end of the lower part of the sampling cabin, which is close to the motor, is a high-position end, one end, which is far away from the motor, is a low-position end, a flow guide wall is formed in front of the high-position end and the low-position end, a liquid outlet is arranged at the position, which is close to the low. This device has realized getting sour fast through the centrifugation, through filter element, has realized the filtration of impurity, gets sour in-process at the centrifugation, keeps apart the tester through the sample cabin, has ensured the security of experimentation.
Description
Technical Field
The invention belongs to the technical field of lead-acid batteries, relates to a technology for testing the sulfuric acid density of a storage battery, and particularly relates to a sulfuric acid sampling device and a sampling method suitable for the lead-acid storage battery.
Background
The lead-acid storage battery has the outstanding advantages of high cost performance, good high and low temperature performance, safety, reliability, floating charge use and the like, and is widely used as a standby power supply for power dispatching and control of a transformer substation from the beginning of the 90 s of the 20 th century. Hundreds of thousands of substations are owned in the country, and each substation needs to be equipped with a standby power supply, so that the number of lead-acid storage batteries in the country is huge.
In addition to being used as electrolyte for conducting electricity in the lead-acid storage battery, the sulfate radical also can be used as a reactant for participating in the reaction. The battery voltage is related to the sulfuric acid concentration, the high concentration electrolyte is beneficial to the anode capacity, and the battery using the high concentration electrolyte can discharge higher capacity. However, when the concentration of the electrolyte exceeds a certain limit, the viscosity of the electrolyte is increased, the fluidity is reduced, the resistance is increased, and meanwhile, grid corrosion is also aggravated. Therefore, testing of the battery sulfuric acid density is required to alert some suppliers to the behavior of increasing electrolyte density in order to reach initial capacity, compromising battery life.
Since the sulfuric acid is distributed in the separator in the battery, it is necessary to take out the sulfuric acid from the separator in order to measure the density thereof. The traditional method for taking acid mostly adopts an extrusion mode to extrude pasty sulfuric acid from the surface of a partition plate. The method has the defects of low acid taking efficiency, experimental error caused by excessive impurity content in the extruded acid liquid, easy splash in the experimental process to cause injury to testers and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device and a sampling method for sampling sulfuric acid in a lead-acid battery, which can improve the acid taking efficiency, filter impurities in acid liquor and improve the acid taking safety.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a device suitable for sulphuric acid sample in lead acid battery which characterized in that: comprises a sampling cabin and a motor; the sampling cabin is horizontally arranged, the sampling cabin is fixedly supported above the base through a cabin frame, the motor is arranged outside one end of the sampling cabin, and the motor is fixedly arranged above the base through a motor support;
the sampling cabin is of a closed cabin body structure and consists of a main cabin body and an openable cabin cover arranged at a hatch opening position at the top of the main cabin body; coaxial bearing holes are formed in the left end and the right end of the main cabin body, bearings are installed in the bearing holes, coaxially arranged rotating shafts are installed in the bearings at the two ends, and the two rotating shafts are connected through a partition board installation frame; the sampling device comprises a sampling cabin, a motor, a liquid outlet, a filtering piece, a liquid collecting container and a liquid collecting container, wherein one end of the lower part of the sampling cabin, which is close to the motor, is a high-position end, one end of the lower part of the sampling cabin, which is far away from the motor, is a low-position end, a flow guide wall is formed in front of the high-position end and the low-position end, the position of the lower part of the sampling cabin, which is close to the low-position end, is provided with the liquid outlet;
the rotating shaft arranged at the end part of the high-level end of the main cabin body extends out of the main cabin body and is coaxially and fixedly connected with an output shaft of the motor;
the sampling cabin, the rotating shaft, the bearing, the partition plate mounting frame, the filtering piece and the liquid collecting container are all made of acid-resistant and corrosion-resistant materials.
Further: the acid separator mounting frame is composed of a mounting frame with the same outline shape as the acid separator to be taken and mounting heads coaxially and fixedly connected with two ends of the mounting frame, flange plates are arranged at the end parts of the mounting heads at the two ends, the inner ends of the two rotating shafts are provided with the flange plates, and two ends of the separator mounting frame are respectively connected with the inner ends of the two rotating shafts through flanges; the four sides of the acid separator to be taken are limited in the mounting frame, and are fixed in the mounting frame through nylon ties which are wrapped transversely, longitudinally or transversely and longitudinally.
Further: the sampling cabin is a conical cabin body structure, wherein one end close to the motor is a small-diameter end, and the liquid outlet is arranged at the lower part close to the large-diameter end of the sampling cabin.
Further: the filter piece adopts a sand core funnel.
Further: the liquid collecting container adopts a glass measuring cylinder.
Further, the method comprises the following steps: the capacity of the glass measuring cylinder was 100 mL.
Further: the sampling cabin is made of polyethylene, the rotating shaft is made of polypropylene materials, the bearing is a PEEK bearing, and the partition plate mounting frame is made of polypropylene materials.
A method suitable for sampling sulfuric acid in a lead-acid battery is characterized in that the method is based on the device, and the sampling process comprises the following steps:
s1, fully charging the lead-acid storage battery at 25 +/-2 ℃;
s2, after the charging is finished, splitting the storage battery along the sealing line, and taking out the internal partition plate;
s3, the partition boards are installed on the partition board installation rack, the partition board installation rack with various shapes and sizes can be prefabricated in advance to adapt to the partition boards with various sizes, when the partition boards are installed, the partition board installation rack with the corresponding size is selected firstly, the partition boards are placed in the partition board installation rack, the four sides of the partition board installation rack are limited, then a plurality of nylon ribbons are fastened on the periphery of the partition board installation rack along the transverse direction, the longitudinal direction or the transverse longitudinal direction, and the partition boards are fixed in the partition board installation rack; then opening the hatch cover, putting the clapboard mounting rack and the clapboard into the sampling cabin together, and fixedly connecting two ends of the clapboard mounting rack with the inner ends of the rotating shafts at the two ends;
s4, starting the motor to drive the partition plate to rotate, centrifuging acid liquid in the partition plate to the inner wall of the sampling cabin, converging the acid liquid to the flow guide wall, entering the filter piece along the flow guide wall, filtering the acid liquid by the filter piece, entering the liquid collection container, and stopping the motor when the volume of the acid liquid in the liquid collection container reaches more than 50mL to finish sampling.
The invention has the advantages and positive effects that:
1. according to the invention, the sulfuric acid in the lead-acid storage battery separator is taken out in a centrifugal mode, and the traditional extrusion type acid taking mode is replaced, so that the rapid acid taking can be realized, and the test time for detecting the sulfuric acid density of the lead-acid storage battery is effectively shortened.
2. The invention adopts the filtering piece to filter the centrifugal acid liquid, and filters out impurities in the acid liquid caused by corrosion of the partition board and the positive and negative plates, thereby avoiding the error influence of the impurities on density detection.
3. According to the invention, the tester is isolated through the sampling cabin, so that the tester is prevented from contacting strong acid, and the safety of the experimental process is ensured.
Drawings
FIG. 1 is a schematic view of the sampling device of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative, not restrictive, and the scope of the invention is not limited thereto.
The invention relates to a device suitable for sampling sulfuric acid in a lead-acid battery, which is shown in figure 1 and comprises a sampling cabin and a motor 11; the sampling cabin is horizontally arranged, the sampling cabin is fixedly supported above the base 13 through the cabin frame 1, the motor is arranged outside one end of the sampling cabin, and the motor is fixedly arranged above the base through the motor support 12. The working voltage of the motor is 220v, the power of the motor is 0.75kw, and the rotating speed is 500 rpm.
The sampling cabin is of a closed cabin body structure and comprises a main cabin body 4 and an openable cabin cover 7 arranged at a hatch opening position at the top of the main cabin body. In particular, the hatch may be placed directly on the supporting edge of the hatch, and the hatch may be removed as a whole when the panel is inserted or removed. Or one side of the hatch cover is connected with the corresponding side part of the hatch through a hinge, the other side of the hatch cover is lapped on the edge of the hatch on the corresponding side, and the hatch cover is turned over when the partition plate is put in or taken out. Coaxial bearing holes are formed in the left end and the right end of the main cabin body, bearings are installed in the bearing holes, lip-shaped sealing rings can be installed on the outer sides of the bearings installed at the two ends, and the sealing effect of the two ends is achieved. The bearings at the two ends are internally provided with coaxially arranged rotating shafts 5 which are connected through a clapboard mounting rack 9. The one end that the lower part of sample cabin is close to the motor is the high-order end, and the one end of keeping away from the motor is the low level end, forms water conservancy diversion wall 10 before high-order end and the low level end, and the position that is close to the low level end in the lower part of sample cabin is provided with the liquid outlet, installs outside the lower part of sample cabin to the position of positive liquid outlet and filters piece 3, filters the impurity that is arranged in the filtering acidizing fluid, guarantees the experimental accuracy of subsequent stage. Place a collecting container 2 in the below of filtering the piece well, the mark has the capacity scale on the collecting container to realize the ration sample of acidizing fluid.
The rotating shaft arranged at the end part of the high-level end of the main cabin body extends out of the main cabin body and is fixedly connected with the output shaft of the motor in a coaxial mode, so that the motor moves to drive the partition board mounting frame to rotate, the partition board fixed on the partition board mounting frame is driven to rotate, and acid is obtained through a centrifugal mode.
The sampling cabin, the rotating shaft, the bearing, the partition plate mounting frame, the filtering piece and the liquid collecting container are all made of acid-resistant and corrosion-resistant materials, so that parts which are not corroded and contacted by acid liquor are guaranteed, and the purity of the taken acid liquor is further guaranteed.
In the above structure, further: the acid separator mounting frame is composed of a mounting frame with the same outline shape as the acid separator to be taken and mounting heads coaxially and fixedly connected with two ends of the mounting frame, flange plates are arranged at the end parts of the mounting heads at the two ends, the inner ends of the two rotating shafts are provided with the flange plates, and two ends of the separator mounting frame are respectively connected with the inner ends of the two rotating shafts through flanges; the four sides of the acid separator 8 to be taken are limited in the mounting frame, and are fixed in the mounting frame through the nylon cable ties 6 which are wrapped transversely, longitudinally or transversely and longitudinally.
In the above structure, further: the sampling cabin is a conical cabin body structure, wherein one end close to the motor is a small-diameter end, and the liquid outlet is arranged at the lower part close to the large-diameter end of the sampling cabin. For example, the diameter of the bulkhead far away from the motor end is 25cm, the diameter of the bulkhead near the motor end is 18cm, and the distance between the two ends is 18 cm. The sampling cabin preferably adopts the conical cabin body structure, but the shape is not limited to be adopted, and the sampling cabin can be applied as long as acid liquid thrown out by centrifugation can fall down and collect on the flow guide wall and flow into the filtering piece through the liquid outlet.
In the above structure, further: the filter piece adopts a sand core funnel.
In the above structure, further: the liquid collecting container adopts a glass measuring cylinder. The capacity of the glass measuring cylinder is preferably 100 mL.
In the above structure, further: the sampling cabin is made of polyethylene, the rotating shaft is made of polypropylene materials, the bearing is a PEEK bearing, and the partition plate mounting frame is made of polypropylene materials. Not only ensures the strength of the parts, but also ensures the acid resistance and corrosion resistance of the parts, and has the advantage of low cost.
The invention discloses a method for sampling sulfuric acid in a lead-acid battery, which comprises the following steps: the method adopts the device, and the sampling process comprises the following steps:
s1, fully charging the lead-acid storage battery at 25 +/-2 ℃;
s2, after the charging is finished, splitting the storage battery along the sealing line, and taking out the internal partition plate;
s3, the partition boards are installed on the partition board installation rack, the partition board installation rack with various shapes and sizes can be prefabricated in advance to adapt to the partition boards with various sizes, when the partition boards are installed, the partition board installation rack with the corresponding size is selected firstly, the partition boards are placed in the partition board installation rack, the four sides of the partition board installation rack are limited, then a plurality of nylon ribbons are fastened on the periphery of the partition board installation rack along the transverse direction, the longitudinal direction or the transverse longitudinal direction, and the partition boards are fixed in the partition board installation rack; then opening the hatch cover, putting the clapboard mounting rack and the clapboard into the sampling cabin together, and fixedly connecting two ends of the clapboard mounting rack with the inner ends of the rotating shafts at the two ends;
s4, starting the motor to drive the partition plate to rotate, centrifuging acid liquid in the partition plate to the inner wall of the sampling cabin, converging the acid liquid to the flow guide wall, entering the filter piece along the flow guide wall, filtering the acid liquid by the filter piece, entering the liquid collection container, and stopping the motor when the volume of the acid liquid in the liquid collection container reaches more than 50mL to finish sampling.
After the sampling is completed, quantifying the acid liquid to 50mL at the temperature of 25 +/-2 ℃, weighing, and calculating the density of the acid liquid.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (8)
1. The utility model provides a device suitable for sulphuric acid sample in lead acid battery which characterized in that: comprises a sampling cabin and a motor; the sampling cabin is horizontally arranged, the sampling cabin is fixedly supported above the base through a cabin frame, the motor is arranged outside one end of the sampling cabin, and the motor is fixedly arranged above the base through a motor support;
the sampling cabin is of a closed cabin body structure and consists of a main cabin body and an openable cabin cover arranged at a hatch opening position at the top of the main cabin body; coaxial bearing holes are formed in the left end and the right end of the main cabin body, bearings are installed in the bearing holes, coaxially arranged rotating shafts are installed in the bearings at the two ends, and the two rotating shafts are connected through a partition board installation frame; the sampling device comprises a sampling cabin, a motor, a liquid outlet, a filtering piece, a liquid collecting container and a liquid collecting container, wherein one end of the lower part of the sampling cabin, which is close to the motor, is a high-position end, one end of the lower part of the sampling cabin, which is far away from the motor, is a ground-position end, a flow guide wall is formed between the high-position end and the ground-position end, the position of the lower part of the sampling cabin, which is close to the ground-position end, is provided with the liquid outlet;
the rotating shaft arranged at the end part of the high-level end of the main cabin body extends out of the main cabin body and is coaxially and fixedly connected with an output shaft of the motor;
the sampling cabin, the rotating shaft, the bearing, the partition plate mounting frame, the filtering piece and the liquid collecting container are all made of acid-resistant and corrosion-resistant materials.
2. The device suitable for sampling sulfuric acid in lead acid batteries according to claim 1, characterized in that: the acid separator mounting frame is composed of a mounting frame with the same outline shape as the acid separator to be taken and mounting heads coaxially and fixedly connected with two ends of the mounting frame, flange plates are arranged at the end parts of the mounting heads at the two ends, the inner ends of the two rotating shafts are provided with the flange plates, and two ends of the separator mounting frame are respectively connected with the inner ends of the two rotating shafts through flanges; the four sides of the acid separator to be taken are limited in the mounting frame, and are fixed in the mounting frame through nylon ties which are wrapped transversely, longitudinally or transversely and longitudinally.
3. The device suitable for sampling sulfuric acid in lead acid batteries according to claim 1, characterized in that: the sampling cabin is a conical cabin body structure, wherein one end close to the motor is a small-diameter end, and the liquid outlet is arranged at the lower part close to the large-diameter end of the sampling cabin.
4. The device suitable for sampling sulfuric acid in lead acid batteries according to claim 1, characterized in that: the filter piece adopts a sand core funnel.
5. The device suitable for sampling sulfuric acid in lead acid batteries according to claim 1, characterized in that: the liquid collecting container adopts a glass measuring cylinder.
6. The device suitable for sampling sulfuric acid in lead acid batteries according to claim 5, wherein: the capacity of the glass measuring cylinder was 100 mL.
7. The device suitable for sampling sulfuric acid in lead acid batteries according to claim 1, characterized in that: the sampling cabin is made of polyethylene, the rotating shaft is made of polypropylene materials, the bearing is a PEEK bearing, and the partition plate mounting frame is made of polypropylene materials.
8. A method for sampling sulfuric acid in a lead-acid battery, which is based on the device for sampling sulfuric acid in a lead-acid battery according to any one of claims 1 to 7, and is characterized in that the sampling process comprises the following steps:
s1, fully charging the lead-acid storage battery at 25 +/-2 ℃;
s2, after the charging is finished, splitting the storage battery along the sealing line, and taking out the internal partition plate;
s3, the partition boards are installed on the partition board installation rack, the partition board installation rack with various shapes and sizes can be prefabricated in advance to adapt to the partition boards with various sizes, when the partition boards are installed, the partition board installation rack with the corresponding size is selected firstly, the partition boards are placed in the partition board installation rack, the four sides of the partition board installation rack are limited, then a plurality of nylon ribbons are fastened on the periphery of the partition board installation rack along the transverse direction, the longitudinal direction or the transverse longitudinal direction, and the partition boards are fixed in the partition board installation rack; then opening the hatch cover, putting the clapboard mounting rack and the clapboard into the sampling cabin together, and fixedly connecting two ends of the clapboard mounting rack with the inner ends of the rotating shafts at the two ends;
s4, starting the motor to drive the partition plate to rotate, centrifuging acid liquid in the partition plate to the inner wall of the sampling cabin, converging the acid liquid to the flow guide wall, entering the filter piece along the flow guide wall, filtering the acid liquid by the filter piece, entering the liquid collection container, and stopping the motor when the volume of the acid liquid in the liquid collection container reaches more than 50mL to finish sampling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010455503.3A CN111693339A (en) | 2020-05-26 | 2020-05-26 | Device and sampling method suitable for sampling sulfuric acid in lead-acid storage battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010455503.3A CN111693339A (en) | 2020-05-26 | 2020-05-26 | Device and sampling method suitable for sampling sulfuric acid in lead-acid storage battery |
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| CN111693339A true CN111693339A (en) | 2020-09-22 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2513510Y (en) * | 2001-10-31 | 2002-10-02 | 刘芳明 | Mop spin-drier and mop head mated with same |
| CN202651317U (en) * | 2012-06-13 | 2013-01-02 | 湖南江冶机电科技股份有限公司 | Hydraulic separator of crushing separation system of waste lead acid storage battery |
| CN204924718U (en) * | 2015-08-25 | 2015-12-30 | 超威电源有限公司 | Be used for battery median septum acidizing fluid to draw filter equipment |
| CN106676792A (en) * | 2017-02-16 | 2017-05-17 | 山东如意科技集团有限公司 | Device and method for cone yarn fixation aftertreatment |
| CN109247600A (en) * | 2018-10-30 | 2019-01-22 | 南安市劲沣工业设计有限公司 | A kind of shallot dewaterer that packaging type broken line is placed |
| CN209326205U (en) * | 2018-12-18 | 2019-08-30 | 广州和信实业有限责任公司 | A kind of workpiece centrifugal dehumidifier |
-
2020
- 2020-05-26 CN CN202010455503.3A patent/CN111693339A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2513510Y (en) * | 2001-10-31 | 2002-10-02 | 刘芳明 | Mop spin-drier and mop head mated with same |
| CN202651317U (en) * | 2012-06-13 | 2013-01-02 | 湖南江冶机电科技股份有限公司 | Hydraulic separator of crushing separation system of waste lead acid storage battery |
| CN204924718U (en) * | 2015-08-25 | 2015-12-30 | 超威电源有限公司 | Be used for battery median septum acidizing fluid to draw filter equipment |
| CN106676792A (en) * | 2017-02-16 | 2017-05-17 | 山东如意科技集团有限公司 | Device and method for cone yarn fixation aftertreatment |
| CN109247600A (en) * | 2018-10-30 | 2019-01-22 | 南安市劲沣工业设计有限公司 | A kind of shallot dewaterer that packaging type broken line is placed |
| CN209326205U (en) * | 2018-12-18 | 2019-08-30 | 广州和信实业有限责任公司 | A kind of workpiece centrifugal dehumidifier |
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