CN220751718U - Lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling - Google Patents
Lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling Download PDFInfo
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- CN220751718U CN220751718U CN202322210040.6U CN202322210040U CN220751718U CN 220751718 U CN220751718 U CN 220751718U CN 202322210040 U CN202322210040 U CN 202322210040U CN 220751718 U CN220751718 U CN 220751718U
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- bottle cap
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- 238000005070 sampling Methods 0.000 title claims abstract description 240
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000003792 electrolyte Substances 0.000 title claims abstract description 31
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 140
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 68
- 238000002156 mixing Methods 0.000 claims abstract description 58
- 238000007789 sealing Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 8
- 210000004489 deciduous teeth Anatomy 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000002699 waste material Substances 0.000 abstract description 5
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Abstract
The utility model discloses a lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling, which comprises: the device comprises a sampling tube, a sampling blow-down tube and a sampling bottle, wherein the sampling tube is arranged on a blending kettle, a first sampling control valve and a second sampling control valve are arranged on the sampling tube, a sampling connector is arranged at the output end of the sampling tube, a mass flowmeter and a nitrogen replacement tube are arranged on the sampling tube between the first sampling control valve and the second sampling control valve, and a nitrogen replacement control valve is arranged on the nitrogen replacement tube; the top of the blending kettle is provided with a pressure gauge, a nitrogen input pipe of the blending kettle and a blow-down pipe of the blending kettle; the device also comprises a sampling blow-down pipe connected with the sampling bottle, a sampling blow-down connector is arranged on the sampling blow-down pipe, and a dew point meter and a sampling blow-down pipe control valve are arranged on the sampling blow-down pipe. The utility model has the advantages that: the quantitative replacement and the quantitative sampling are realized, and the waste of nitrogen and materials is effectively avoided, so that the production cost can be reduced.
Description
Technical Field
The utility model relates to the technical field of lithium battery electrolyte production equipment, in particular to a sampling mechanism for lithium battery electrolyte.
Background
In the production process of the lithium battery electrolyte, products in each key process are required to be sampled, and then the samples are subjected to inspection and analysis, so that the production quality of the lithium battery electrolyte is ensured.
Before each sampling, the inert gas replacement is needed to be carried out on the sampling bottle, and the sampling operation of the lithium battery electrolyte is carried out after the replacement is completed. The current sampling equipment is simple, the replacement degree of inert gas before sampling cannot be monitored, and excessive consumption of the inert gas is caused, so that the production cost is increased. Meanwhile, the sampling amount in the sampling process cannot be effectively controlled, and the redundant detection samples cannot be recycled due to different consumption of samples by different detection projects, so that the lithium battery electrolyte is unnecessarily wasted, and the production cost is further increased.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the lithium battery electrolyte sampling mechanism is simple in structure, and can control the consumption of replacement gas before sampling and the quality of a sample during sampling, so that the production cost is effectively reduced.
In order to solve the problems, the utility model adopts the following technical scheme: lithium battery electrolyte sampling mechanism that can quantitative replacement and sample includes: the sampling tube is arranged on the blending kettle, a first sampling control valve and a second sampling control valve are arranged on the sampling tube, the first sampling control valve is close to one end of the blending kettle, the second sampling control valve is positioned at the output end of the sampling tube, a sampling connector used for being connected with the sampling bottle is arranged at the output end of the sampling tube, a mass flowmeter and a nitrogen replacement tube are sequentially arranged on the sampling tube between the first sampling control valve and the second sampling control valve along the flow direction of feed liquid during sampling, the nitrogen replacement tube is vertically upwards arranged on the sampling tube, and the nitrogen replacement control valve is arranged on the nitrogen replacement tube; the top of the blending kettle is provided with a pressure gauge, a nitrogen input pipe of the blending kettle and a emptying pipe of the blending kettle, the nitrogen input pipe of the blending kettle is provided with a nitrogen input control valve of the blending kettle, and the emptying pipe of the blending kettle is provided with a emptying control valve of the blending kettle; the device also comprises a sampling blow-down pipe connected with the sampling bottle, wherein a sampling blow-down connector connected with the sampling bottle is arranged on the sampling blow-down pipe, and a dew point meter and a sampling blow-down pipe control valve are sequentially arranged on the sampling blow-down pipe along the gas discharge direction.
Further, the lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling is characterized in that the nitrogen input pipe and the nitrogen replacement pipe of the mixing kettle are communicated with the nitrogen inlet pipe.
Further, the lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling is characterized in that the sampling emptying pipe and the blending kettle emptying pipe are connected to the emptying main pipe.
Further, the lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling is characterized in that the first sampling control valve, the second sampling control valve, the nitrogen replacement control valve, the nitrogen input control valve of the blending kettle and the emptying control valve of the blending kettle are pneumatic valves, and the sampling emptying control valve adopts a self-operated regulating valve.
Further, the lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling further comprises a control unit with an operation panel; the pressure gauge, the mass flowmeter and the dew point meter are all in signal connection with the control unit.
Further, the lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling is characterized in that a bottle cap is arranged on a bottle opening of a sampling bottle, a tetrafluoro sealing gasket is arranged in the bottle cap, a bottle cap bottom inserting pipe is arranged on the bottle cap, the lower end of the bottle cap bottom inserting pipe stretches into the sampling bottle, the upper end of the bottle cap bottom inserting pipe stretches out of the bottle cap and is provided with a bottle cap bottom inserting pipe joint which is connected with the sampling connector in a matched mode, and a bottle cap emptying connector is further arranged on the bottle cap and is used for being connected with the sampling emptying connector.
Furthermore, in the lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling, the sampling connector and the bottle cap bottom-inserting pipe connector are in sealing connection by adopting a primary-secondary tooth inserting structure, the sampling connector is a primary tooth, the bottle cap bottom-inserting pipe connector is a secondary tooth, and the bottle cap bottom-inserting pipe connector is inserted into the sampling connector; the bottle cap emptying connector is in sealing connection with the sampling emptying connector through a primary-secondary tooth inserting structure, the sampling emptying connector is a primary tooth, the bottle cap emptying connector is a secondary tooth, and the bottle cap emptying connector is inserted into the sampling emptying connector.
Further, the lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling is characterized in that a sampling manual control valve is arranged on the sampling tube, and the sampling manual control valve is arranged on the sampling tube between the first sampling control valve and the mixing kettle; the nitrogen replacement pipe is provided with a nitrogen replacement manual control valve.
The utility model has the advantages that: the utility model has the advantages that: 1. the quantitative replacement and the quantitative sampling are realized, so that the waste of nitrogen and materials can be effectively avoided, and the production cost can be reduced. 2. Residual materials can be blown back to the blending kettle in a nitrogen back-blowing mode, so that the waste of the materials is further effectively avoided. 3. The effectiveness of sampling materials is realized, and the accuracy of the test is improved, so that the production of lithium battery electrolyte is reliably ensured.
Drawings
Fig. 1 is a schematic structural diagram of a lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling.
Description of the embodiments
The utility model will be described in further detail with reference to the drawings and the preferred embodiments.
As shown in fig. 1, the lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling comprises: sampling tube 2, sample blow-down tube 6 and sample bottle 3. The sampling tube 2 is arranged on the blending kettle 1, a first sampling control valve 21 and a second sampling control valve 22 are arranged on the sampling tube 2, the first sampling control valve 21 is arranged close to one end of the blending kettle 1, the second sampling control valve 22 is arranged at the output end of the sampling tube 2, and a sampling connector 24 used for being connected with the sampling bottle 3 is arranged at the output end of the sampling tube 2. The mass flowmeter 4 and the nitrogen replacement pipe 5 are sequentially arranged on the sampling pipe 2 between the first sampling control valve 21 and the second sampling control valve 22 along the flow direction of the feed liquid during sampling, the nitrogen replacement pipe 5 is vertically upwards arranged on the sampling pipe 2, and the nitrogen replacement control valve 51 is arranged on the nitrogen replacement pipe 5. The top of the blending kettle 1 is provided with a pressure gauge 11, a blending kettle nitrogen input pipe 12 and a blending kettle emptying pipe 13, the blending kettle nitrogen input pipe 12 is provided with a blending kettle nitrogen input control valve 121, and the blending kettle emptying pipe 13 is provided with a blending kettle emptying control valve 131. The nitrogen input pipe 12 and the nitrogen replacement pipe 5 of the blending kettle are communicated with the nitrogen inlet pipe 7. A sampling blow-down connector 61 for connecting with the sampling bottle 3 is arranged on the sampling blow-down pipe 6, and a dew point meter 62 and a sampling blow-down pipe control valve 63 are sequentially arranged on the sampling blow-down pipe 6 along the gas discharge direction. The sample vent tube 6 and the deployment kettle vent tube 13 are connected to the vent manifold 8.
The mass flowmeter 4 is arranged to measure the mass of the material during sampling, thereby ensuring quantitative sampling. The dew point meter 62 is arranged to monitor the dew point value of the gas discharged from the sampling blow-down pipe 6 in real time, and when the sampling bottle 3 is fully replaced, the gas discharged from the sampling blow-down pipe 6 is pure nitrogen, the dew point value is usually less than or equal to-40 ℃, so that the components of the gas discharged from the sampling blow-down pipe 6 are judged through the dew point value, when the dew point value is less than or equal to-40 ℃, the replacement is fully indicated, and at the moment, the nitrogen replacement of the sampling bottle 3 can be stopped, so that the quantitative replacement of the nitrogen can be realized through the monitoring of the dew point value.
In order to facilitate sampling connection, a bottle cap 31 is arranged on the bottle mouth of the sampling bottle 3, a tetrafluoro sealing gasket 32 for sealing is arranged in the bottle cap 31, a bottle cap bottom inserting pipe 33 is arranged on the bottle cap 31, the lower end of the bottle cap bottom inserting pipe 33 stretches into the sampling bottle 3, the upper end of the bottle cap bottom inserting pipe 33 stretches out of the bottle cap 31 and is provided with a bottle cap bottom inserting pipe joint 34 which is connected with the sampling connector 24 in a matched mode, a bottle cap emptying connector 35 is further arranged on the bottle cap 31, and the bottle cap emptying connector 35 is used for being connected with the sampling emptying connector 61.
Specifically, the sampling connector 24 is in sealing connection with the bottle cap bottom inserting pipe connector 34 by adopting a primary-secondary tooth inserting structure, the sampling connector 24 is a primary tooth, the bottle cap bottom inserting pipe connector 34 is a secondary tooth, and the bottle cap bottom inserting pipe connector 34 is inserted into the sampling connector 24. The bottle cap emptying connector 35 is also in sealing connection with the sampling emptying connector 61 by adopting a primary-secondary tooth inserting structure, the sampling emptying connector 61 is a primary tooth, the bottle cap emptying connector 35 is a secondary tooth, and the bottle cap emptying connector 35 is inserted into the sampling emptying connector 61.
In this embodiment, in order to facilitate automatic control, the first sampling control valve 21, the second sampling control valve 22, the nitrogen replacement control valve 51, the deployment kettle nitrogen input control valve 121, and the deployment kettle vent control valve 131 are all pneumatic valves. The sampling blow-down pipe control valve 63 is a self-operated regulating valve.
The lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling according to the present embodiment further includes a control unit 9 with an operation panel 91. The pressure gauge 11, the mass flowmeter 4 and the dew point meter 62 are all in signal connection with the control unit 9.
In order to further reliably control the pipeline, in the embodiment, a sampling manual control valve 25 is arranged on the sampling pipe 2, and the sampling manual control valve 25 is arranged on the sampling pipe 2 between the first sampling control valve 21 and the blending kettle 1; the nitrogen replacement pipe 5 is provided with a nitrogen replacement manual control valve 52.
The working principle is as follows: when sampling is required, the sampling bottle 3 is installed first. The cap 31 is screwed tightly onto the mouth of the sampling bottle 3, then the cap bottom-inserting pipe joint 34 is inserted into the sampling connector 24, and the cap emptying joint 35 is inserted into the sampling emptying connector 61. The nitrogen-sparge manual control valve 52 and the sampling manual control valve 25 are then opened. The quality of the current sampling and the dew point value were set by the operation panel 91, and the dew point value was set to-40 ℃.
Then, the automatic sampling operation is started by clicking the operation panel 91 to sample. First, the control unit 9 controls the opening of the nitrogen replacement control valve 51 and the second sampling control valve 22, and nitrogen gas is introduced into the sampling bottle 3 from the nitrogen gas inlet pipe 7 through the nitrogen replacement pipe 5, the second sampling control valve 22, the sampling connector 24, and the cap bottom-plugging pipe joint 34, and air in the sampling bottle 3 is discharged from the sampling blow-down pipe 6 through the blow-down main pipe 8 through the cap blow-down connector 35, the sampling blow-down connector 61, the dew point gauge 62, and the sampling blow-down pipe control valve 63, thereby performing nitrogen gas replacement. The dew point meter 62 monitors the dew point value in real time, and feeds back the monitored signal to the control unit 9, when the dew point value monitored by the dew point meter 62 is-40 ℃, the control unit 9 controls the nitrogen replacement control valve 51 to be closed, and at the moment, the nitrogen replacement is finished.
Then, the control unit 9 controls the nitrogen input control valve 121 of the blending kettle to be opened, so that nitrogen enters the blending kettle 1 from the nitrogen input pipe 12 of the blending kettle, the pressure gauge 11 monitors the pressure in the blending kettle 1 in real time, and feeds back the monitored signal to the control unit 9, and when the pressure gauge 11 displays that the pressure in the blending kettle 1 is 0.04-0.05 MPa, the pressure in the blending kettle 1 reaches the sampling pressure requirement. At this time, the control unit 9 controls the first sampling control valve 21 to open, and the materials in the blending kettle 1 enter the sampling bottle 3 through the sampling tube 2, and then sequentially and manually enter the control valve 25, the first sampling control valve 21, the second sampling control valve 22, the sampling connector 24 and the bottle cap bottom inserting tube connector 34 through sampling. The mass flowmeter 4 monitors the mass of the flowing material in real time, and feeds back a monitoring signal to the control unit 9, and when the mass reaches a set value, the control unit 9 controls the second sampling control valve 22 to close, and sampling is stopped.
Then, the control unit 9 controls the nitrogen input control valve 121 and the emptying control valve 131 of the blending kettle to be opened, the pressure gauge 11 monitors the pressure in the blending kettle 1 in real time, at the moment, the nitrogen is input into the blending kettle 1, and at the same time, the gas in the blending kettle 1 is discharged from the emptying pipe 13 of the blending kettle through the emptying main pipe 8. When the pressure gauge 11 shows that the pressure in the blending kettle 1 is 0.02-0.03 MPa, the control unit 9 controls the nitrogen replacement control valve 51 to be opened, nitrogen enters from the nitrogen replacement pipe 5, and residual materials in the sampling pipe 2 are reversely blown back to the blending kettle through nitrogen reverse blowing. After the purge was continued for 15 seconds, the control unit 9 controlled the first sampling control valve 21 to be closed and then controlled the nitrogen gas replacement control valve 51 to be closed. Reverse purging can effectively avoid material loss during sampling.
At the end of sampling, the operator then replaces the manual control valve 52 with nitrogen and the sampling manually closes the control valve 25. Then disconnecting the bottle cap bottom inserting pipe joint 34 and the sampling connecting joint 24, disconnecting the bottle cap emptying joint 35 and the sampling emptying connecting joint 61, and sending the sampling bottle 3 with the bottle cap 31 to a checking test.
The utility model has the advantages that: 1. the quantitative replacement and the quantitative sampling are realized, so that the waste of nitrogen and materials can be effectively avoided, and the production cost can be reduced. 2. Residual materials can be blown back to the blending kettle in a nitrogen back-blowing mode, so that the waste of the materials is further effectively avoided. 3. The effectiveness of sampling materials is realized, and the accuracy of the test is improved, so that the production of lithium battery electrolyte is reliably ensured.
Claims (8)
1. Lithium battery electrolyte sampling mechanism that can quantitative replacement and sample includes: sampling tube, sample blow-down pipe and sample bottle, the sampling tube set up on the allotment cauldron, its characterized in that: the sampling tube is provided with a first sampling control valve and a second sampling control valve, the first sampling control valve is arranged close to one end of the blending kettle, the second sampling control valve is positioned at the output end of the sampling tube, the output end of the sampling tube is provided with a sampling connector used for being connected with a sampling bottle, the sampling tube between the first sampling control valve and the second sampling control valve is sequentially provided with a mass flowmeter and a nitrogen replacement tube along the flow direction of feed liquid during sampling, the nitrogen replacement tube is vertically upwards arranged on the sampling tube, and the nitrogen replacement tube is provided with a nitrogen replacement control valve; the top of the blending kettle is provided with a pressure gauge, a nitrogen input pipe of the blending kettle and a emptying pipe of the blending kettle, the nitrogen input pipe of the blending kettle is provided with a nitrogen input control valve of the blending kettle, and the emptying pipe of the blending kettle is provided with a emptying control valve of the blending kettle; the device also comprises a sampling blow-down pipe connected with the sampling bottle, wherein a sampling blow-down connector connected with the sampling bottle is arranged on the sampling blow-down pipe, and a dew point meter and a sampling blow-down pipe control valve are sequentially arranged on the sampling blow-down pipe along the gas discharge direction.
2. The lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling according to claim 1, wherein: the nitrogen input pipe and the nitrogen replacement pipe of the mixing kettle are communicated with a nitrogen inlet pipe.
3. The lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling according to claim 1, wherein: the sampling blow-down pipe and the blending kettle blow-down pipe are connected to the blow-down main pipe.
4. The lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling according to claim 1, wherein: the first sampling control valve, the second sampling control valve, the nitrogen replacement control valve, the nitrogen input control valve of the blending kettle and the emptying control valve of the blending kettle are all pneumatic valves, and the sampling emptying control valve adopts a self-operated regulating valve.
5. The lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling according to claim 1, wherein: the control unit is provided with an operation panel; the pressure gauge, the mass flowmeter and the dew point meter are all in signal connection with the control unit.
6. The lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling according to claim 1, wherein: the bottle mouth of the sampling bottle is provided with a bottle cap, a tetrafluoro sealing gasket is arranged in the bottle cap, a bottle cap bottom inserting pipe is arranged on the bottle cap, the lower end of the bottle cap bottom inserting pipe stretches into the sampling bottle, the upper end of the bottle cap bottom inserting pipe stretches out of the bottle cap and is provided with a bottle cap bottom inserting pipe joint which is connected with the sampling connector in a matched mode, a bottle cap emptying connector is further arranged on the bottle cap, and the bottle cap emptying connector is used for being connected with the sampling emptying connector.
7. The lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling according to claim 6, wherein: the sampling connector is in sealing connection with the bottle cap bottom-inserting pipe connector by adopting a primary-secondary tooth inserting structure, the sampling connector is a primary tooth, the bottle cap bottom-inserting pipe connector is a secondary tooth, and the bottle cap bottom-inserting pipe connector is inserted into the sampling connector; the bottle cap emptying connector is in sealing connection with the sampling emptying connector through a primary-secondary tooth inserting structure, the sampling emptying connector is a primary tooth, the bottle cap emptying connector is a secondary tooth, and the bottle cap emptying connector is inserted into the sampling emptying connector.
8. The lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling according to claim 1, wherein: the sampling pipe is provided with a sampling manual control valve, and the sampling manual control valve is arranged on the sampling pipe between the first sampling control valve and the blending kettle; the nitrogen replacement pipe is provided with a nitrogen replacement manual control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322210040.6U CN220751718U (en) | 2023-08-17 | 2023-08-17 | Lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322210040.6U CN220751718U (en) | 2023-08-17 | 2023-08-17 | Lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220751718U true CN220751718U (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322210040.6U Active CN220751718U (en) | 2023-08-17 | 2023-08-17 | Lithium battery electrolyte sampling mechanism capable of quantitatively replacing and sampling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220751718U (en) |
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2023
- 2023-08-17 CN CN202322210040.6U patent/CN220751718U/en active Active
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| GR01 | Patent grant |