CN220752015U - Measurement system for accurately measuring PH of absorption tower - Google Patents
Measurement system for accurately measuring PH of absorption tower Download PDFInfo
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- CN220752015U CN220752015U CN202322413517.0U CN202322413517U CN220752015U CN 220752015 U CN220752015 U CN 220752015U CN 202322413517 U CN202322413517 U CN 202322413517U CN 220752015 U CN220752015 U CN 220752015U
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- measuring
- measuring cylinder
- absorption tower
- cylinder
- connecting block
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 34
- 238000005259 measurement Methods 0.000 title claims description 23
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000000523 sample Substances 0.000 claims abstract description 31
- 238000011010 flushing procedure Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 13
- 239000003381 stabilizer Substances 0.000 claims description 9
- 239000006096 absorbing agent Substances 0.000 claims 1
- 239000002002 slurry Substances 0.000 abstract description 37
- 230000000087 stabilizing effect Effects 0.000 abstract description 8
- 238000006477 desulfuration reaction Methods 0.000 abstract description 7
- 230000023556 desulfurization Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000001139 pH measurement Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model provides a measuring system for accurately measuring PH of an absorption tower, which belongs to the technical field of desulfurization equipment and comprises the following components: the PH measuring probe is arranged at the top of the measuring barrel, the steady flow plate is arranged in the measuring barrel, and the side wall of the measuring barrel is communicated with the flushing pipe and the liquid inlet pipe; the side wall of the measuring cylinder is also communicated with a high-level liquid outlet pipe, the high-level liquid outlet pipe is opposite to the flushing pipe, and the side wall of the measuring cylinder is positioned below the high-level liquid outlet pipe and is communicated with a low-level liquid outlet pipe. In the method, the slurry in the absorption tower enters the measuring cylinder through the liquid inlet pipe, and the slurry passes through the flow stabilizing plate from bottom to top, so that the slurry in the measuring cylinder keeps low-speed flow, the PH measuring probe accurately measures the PH of the slurry in the measuring cylinder, and meanwhile, the PH measuring probe is protected from being worn rapidly; the flush tube is capable of flushing the PH measurement probe.
Description
Technical Field
The utility model belongs to the technical field of desulfurization equipment, and particularly relates to a measuring system for accurately measuring the PH of an absorption tower.
Background
At present, limestone-gypsum wet method is widely adopted in thermal power plants in China for flue gas desulfurization, the PH value of an absorption tower is an important parameter affecting the performance of a desulfurization system, and in order to ensure the stability of the desulfurization system and the desulfurization rate, operators need to adjust the opening of a slurry supply adjusting door in real time according to the PH value of the absorption tower. However, in the measurement of the circulating slurry in the desulfurization absorption tower, the measurement conditions are very bad. The main components of the circulating slurry of the absorption tower are various soluble substances such as sulfurous acid, sulfuric acid, chloride ions, metal ions, organic matters and the like, and a large amount of solid substances such as calcium sulfite, calcium sulfate, limestone, fly ash and the like, and the glass film of the PH measuring electrode is worn by the fast flowing slurry, so that the service life is fast reduced, and the measured value is inaccurate. In addition, changes in the pressure and temperature of the measuring device during the measurement process can also have an effect on the measurement.
Disclosure of Invention
The utility model provides a measuring system for accurately measuring the PH of an absorption tower, which aims to solve the problem of inaccurate measurement of a PH measuring electrode in the prior art. Through the steady flow plate, the slurry can be prevented from flowing in the measuring cylinder rapidly, so that the PH measuring probe is prevented from being worn rapidly; meanwhile, the pressure in the measuring cylinder can be kept constant, and the PH measured value can be kept accurate.
The utility model adopts the technical scheme that the measuring system for accurately measuring the PH of the absorption tower comprises the following steps:
the utility model provides a measuring system for accurately measuring PH of an absorption tower, which comprises: the PH measuring probe is arranged at the top of the measuring tube, the steady flow plate is arranged in the measuring tube, the flushing tube is communicated with the position of the side wall of the measuring tube above the steady flow plate, and the liquid inlet tube is communicated with the position of the side wall of the measuring tube below the steady flow plate;
the lateral wall of the measuring cylinder is also communicated with a high-level liquid outlet pipe, the high-level liquid outlet pipe and the flushing pipe are oppositely arranged at two sides of the measuring cylinder, and the lateral wall of the measuring cylinder is communicated with a low-level liquid outlet pipe at the position below the high-level liquid outlet pipe.
The measuring system for accurately measuring the PH of the absorption tower can introduce the slurry in the absorption tower into the measuring cylinder through the liquid inlet pipe; measuring the pH value of the slurry in the measuring cylinder by a pH measuring probe; the steady flow plate can prevent the slurry from flowing rapidly in the measuring cylinder, so that the PH measuring probe is prevented from being worn due to the fact that the flow speed of the slurry is too high; simultaneously, the flushing pipe can flush the PH measuring probe, and the scaling of the PH measuring probe is avoided.
Further, the top of the measuring cylinder is provided with an opening, and the measuring cylinder is in threaded connection with a top cover for covering the opening. In this further technical scheme, the part in the measuring cylinder is convenient to maintain and change through the opening.
Further, the top cover is provided with a socket, a first connecting block is arranged at the position of the top cover corresponding to the socket, the first connecting block is provided with a connecting hole communicated with the socket, and the outer wall of the first connecting block is provided with external threads; the top cover is hinged with a flip cover for covering the detection opening. In the further technical scheme, a PH measuring probe penetrates through the connecting hole and the socket to measure the PH value of the slurry in the measuring cylinder; meanwhile, the PH value of the slurry in the measuring cylinder can be manually measured through the detection port, so that the measurement result of the PH measuring probe can be conveniently compared.
Further, the PH measuring probe comprises a hollow inserted link, and the bottom end of the inserted link is provided with a PH electrode; wherein, be provided with the second connecting block on the inserted bar, the internal thread groove has been seted up to the second connecting block, and the second connecting block passes through internal thread groove and first connecting block threaded connection. In this further technical scheme, PH measuring probe passes through internal thread groove and first connecting block threaded connection, conveniently takes off PH measuring probe from the dipperstick and overhauls it.
Further, one end of the flushing pipe extends into the measuring cylinder and is aligned with the PH electrode, and a solenoid valve is arranged at the part of the flushing pipe, which is positioned outside the measuring cylinder. In this further technical scheme, can regularly wash the PH electrode through the wash pipe, prevent PH electrode scale deposit, lead to measuring result inaccuracy.
Further, the flow stabilizing plate is provided with a plurality of flow stabilizing holes.
Further, a manual valve is arranged on the liquid inlet pipe. In this further technical scheme, can adjust the flow size that the feed liquor pipe enters into thick liquid in the measuring vessel through manual valve.
The beneficial effects of the utility model are as follows: 1. in the measuring system for accurately measuring the PH of the absorption tower, the flow rate of the slurry in the measuring cylinder can be reduced by the flow stabilizing plate, so that the PH measuring probe is prevented from being worn due to too fast slurry flow rate; 2. in this measurement system of accurate measurement absorption tower PH, can carry out manual measurement to the PH value of thick liquid in the measuring vessel through detecting the mouth, measure thick liquid PH value under same environment through artifical and online two kinds of measurement methods, conveniently contrast PH measurement probe's measuring result, avoid PH measurement probe to produce measuring error because of the environmental difference, therefore can be more convenient, accurate judgement on-line measurement result is accurate.
Drawings
FIG. 1 is a schematic diagram of a measurement system for accurately measuring the PH of an absorption tower according to an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of a measuring cylinder of a measuring system for accurately measuring the PH of an absorption tower according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of a connection structure between a PH measuring probe and a top cover of a measuring system for accurately measuring PH of an absorption tower according to an embodiment of the present utility model.
In the accompanying drawings: 1 represents a measuring cylinder, 2 represents a PH measuring probe, 3 represents a steady flow plate, 4 represents a flushing pipe, 5 represents a liquid inlet pipe, 6 represents a high-level liquid outlet pipe, 7 represents a low-level liquid outlet pipe, 8 represents a top cover, 9 represents a socket, 10 represents a first connecting block, 11 represents a connecting hole, 12 represents a detecting port, 13 represents a flip cover, 14 represents a plug rod, 15 represents a PH electrode, 16 represents a second connecting block, 17 represents an internal thread groove, 18 represents a steady flow hole, 19 represents a manual valve, 20 represents an electromagnetic valve, and 21 represents a display screen.
Detailed Description
The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. In the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present utility model.
Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural diagram of a measuring system for accurately measuring PH of an absorption tower according to an embodiment of the present utility model, fig. 2 is a schematic structural diagram of a measuring cylinder of a measuring system for accurately measuring PH of an absorption tower according to an embodiment of the present utility model, and fig. 3 is a schematic structural diagram of a connection structure between a PH measuring probe and a top cover of a measuring system for accurately measuring PH of an absorption tower according to an embodiment of the present utility model. As can be seen from fig. 1, the present application includes a measuring cylinder 1, the diameter of the measuring cylinder 1 is 350-500 mm, the preferred size of the diameter of the measuring cylinder 1 is 450 mm, and the measuring cylinder 1 is made of 2205 stainless steel, which has high abrasion resistance and corrosion resistance, so that the measuring cylinder 1 can bear the flushing and corrosion of slurry; with continued reference to fig. 1, a measuring cylinder 1 is provided with a PH measuring probe 2, a flushing pipe 4 is communicated with the upper part of one side of the outer wall of the measuring cylinder 1, an electromagnetic valve 20 is arranged on the flushing pipe 4, a liquid inlet pipe 5 is communicated with the position of the outer wall of the measuring cylinder 1 below the flushing pipe 4, and a manual valve 19 is arranged on the liquid inlet pipe 5; with continued reference to fig. 1, the upper part of the other side of the outer wall of the measuring cylinder 1 is communicated with a high-level liquid outlet pipe 6, the position of the outer wall of the measuring cylinder 1 below the high-level liquid outlet pipe 6 is communicated with a low-level liquid outlet pipe 7, the position of the high-level liquid outlet pipe 6 corresponds to the position of the flushing pipe, and the position of the low-level liquid outlet pipe 7 corresponds to the position of the liquid inlet pipe 5.
Referring to fig. 2, an opening is formed in the upper portion of the measuring cylinder 1, the measuring cylinder 1 is connected with a top cover 8 for covering the opening, specifically, an external thread can be formed in the upper portion of the outer wall of the measuring cylinder 1, an internal thread matched with the external thread is formed in the inner side wall of the top cover 8, and the top cover 8 is in threaded connection with the measuring cylinder 1; with continued reference to fig. 2, the top cover 8 is provided with a detection port 12, and the top cover 8 is hinged with a flip cover 13 for closing the detection port 12; with continued reference to FIG. 2, one end of the flush tube 4 extends into the measuring cylinder 1 and is aligned with the bottom end of the PH measuring probe 2; with continued reference to fig. 2, a stabilizer plate 3 is fixedly connected to the measuring cylinder 1 at a position between the flushing pipe 4 and the liquid inlet pipe 5, and a plurality of stabilizer holes 18 are formed in the stabilizer plate 3. The thickness of the current stabilizer plate 3 is 3-8 mm, and the preferable thickness dimension is 5 mm; and the diameter of the steady flow hole 18 is 8-12 mm, and the preferable diameter size is 10 mm.
The PH measuring probe 2 can refer to fig. 2 and 3 when specifically setting, according to fig. 2 and 3, it can be known that the PH measuring probe 2 includes a hollow insert rod 14, a PH electrode 15 is disposed at the bottom end of the insert rod 14, the PH electrode 15 adopts ABB AX400 series PH electrodes, which is an industrial grade professional measurement slurry PH meter, and has higher measurement accuracy, in this application the PH electrode 15 is located in the measuring cylinder 1 and aligned with the flushing pipe 4, a display screen 21 is disposed at the top end of the insert rod 14, the PH electrode 15 is in signal connection with the display screen 21, and a connection mode between the PH electrode 15 and the display screen 21 can be routed inside the insert rod 14.
Referring to fig. 3, when the PH measuring probe 2 is specifically installed, as can be seen from fig. 3, a socket 9 is formed on the top cover 8, a first connecting block 10 is fixedly connected to the top cover 8 corresponding to the socket 9, a connecting hole 11 communicated with the socket 9 is formed in the first connecting block 10, and external threads are formed on the outer wall of the first connecting block 10; with continued reference to fig. 3, a second connection block 16 is fixedly connected to the side wall of the plunger 14, and the second connection block 16 is provided with an internal thread groove 17 which is matched with the first connection block 10.
The working principle of the measuring system for accurately measuring the PH of the absorption tower is as follows: in this application, the one end that feed liquor pipe 5 kept away from measuring section of thick bamboo 1 is linked together with the absorption tower, and the one end that measuring section of thick bamboo 1 was kept away from to flushing pipe 4 is linked together with outside water source, and the one end that measuring section of thick bamboo 1 was kept away from to high-order drain pipe 6 and low-order drain pipe 7 all is linked together with the pit through the pipeline.
When the PH electrode measuring device is used, the top cover 8 and the measuring cylinder 1 are connected together through threads, then the PH electrode 15 passes through the connecting hole 11 and the socket 9 until the second connecting block 16 is contacted with the first connecting block 10, and then the first connecting block 10 is connected with the internal thread groove 17 through threads, so that the PH electrode 15 is inserted into the measuring cylinder 1 and the inserting rod 14 is fixed on the top cover 8.
Then, the manual valve 19 is opened, so that the slurry in the absorption tower enters the measuring cylinder 1 through the liquid inlet pipe 5, meanwhile, the manual valve 19 is adjusted to control the flow rate of the slurry entering the measuring cylinder 1 through the liquid inlet pipe 5, the liquid level of the slurry rises in the measuring cylinder 1, the slurry can pass through the flow stabilizing plate 3 in the rising process of the slurry, the flow stabilizing plate 3 can reduce the flow rate of the slurry passing through, the flow rate of the slurry positioned at the upper part of the flow stabilizing plate 3 in the measuring cylinder 1 is lower than the flow rate of the slurry positioned at the lower part of the flow stabilizing plate 3, and when the slurry passes through the PH electrode 15, the PH electrode 15 can measure the PH value of the slurry in the measuring cylinder 1, so that the PH value in the absorption tower is measured, and the measured result is displayed on the display screen 21. The PH electrode 15 measures the PH value of the slurry located at the upper part of the stabilizer plate 3, and since the slurry at the upper part of the stabilizer plate 3 has a low flow rate, the PH electrode 15 is prevented from being worn due to the excessive flow rate of the slurry, thereby protecting the PH electrode 15.
In addition, the detection personnel can turn the flip 13 to open the detection port 12, and then the detection personnel can hold the PH detection probe to detect the PH value of the slurry in the measuring cylinder 1 through the detection port 12, so that the slurry in the measuring cylinder 1 is measured in the same environment in an artificial and online two measuring modes, and the detection result of the handheld PH measurement probe is compared with the detection result of the PH electrode 15, so that the measurement error of the PH electrode 15 caused by the environmental difference is avoided, and the online measurement result of the PH electrode 15 can be more conveniently and accurately judged.
When the measurement result of the PH electrode 15 is inaccurate, the second connecting block 16 is separated from the first connecting block 10 by rotating the second connecting block 16, and then the PH measuring probe 2 is moved upwards until the PH electrode 15 is moved out of the measuring cylinder 1, thereby facilitating maintenance or replacement of the PH electrode 15.
In addition, in order to prevent the PH electrode 15 from scaling by being soaked in the slurry for a long time, the electromagnetic valve 20 may be periodically opened, water in the external water source may enter the measuring cylinder 1 through the flushing pipe 4, and the water entering the measuring cylinder 1 may flush the PH electrode 15, thereby cleaning the PH electrode 15 and preventing the PH electrode 15 from scaling.
In the above embodiment, the present utility model provides a measuring system for accurately measuring the PH of an absorption tower, where a flow stabilizer in the measuring system for accurately measuring the PH of the absorption tower can reduce the flow rate of the slurry in the measuring cylinder, thereby preventing the slurry from having a high flow rate and wearing a PH electrode; in addition, the PH electrode online measurement result can be compared through two modes of online measurement and manual measurement, and whether the PH electrode online measurement result is accurate can be judged more conveniently and accurately.
The above examples are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the spirit and scope of the present utility model. Various modifications and improvements of the technical scheme of the present utility model will fall within the protection scope of the present utility model without departing from the design concept of the present utility model, and the technical content of the present utility model is fully described in the claims.
Claims (7)
1. A measurement system for accurately measuring PH of an absorber, comprising: measuring cylinder (1), its characterized in that: the PH measuring probe (2) is arranged at the top of the measuring cylinder (1), the steady flow plate (3) is arranged in the measuring cylinder (1), a flushing pipe (4) is communicated with the position, above the steady flow plate (3), of the side wall of the measuring cylinder (1), and a liquid inlet pipe (5) is communicated with the position, below the steady flow plate (3), of the side wall of the measuring cylinder (1);
the side wall of the measuring cylinder (1) is also communicated with a high-level liquid outlet pipe (6), the high-level liquid outlet pipe (6) and the flushing pipe (4) are oppositely arranged on two sides of the measuring cylinder (1), and the side wall of the measuring cylinder (1) is positioned below the high-level liquid outlet pipe (6), and is communicated with a low-level liquid outlet pipe (7).
2. The measuring system for accurately measuring the PH of the absorption tower according to claim 1, wherein an opening is formed in the top of the measuring cylinder (1), and a top cover (8) for covering the opening is connected with the measuring cylinder (1) in a threaded manner.
3. The measuring system for accurately measuring the PH of the absorption tower according to claim 2, wherein the top cover (8) is provided with a socket (9), a first connecting block (10) is arranged at a position of the top cover (8) corresponding to the socket (9), the first connecting block (10) is provided with a connecting hole (11) communicated with the socket (9), and the outer wall of the first connecting block (10) is provided with external threads; the top cover (8) is further provided with a detection port (12), and the top cover (8) is hinged with a flip cover (13) for covering the detection port (12).
4. A measuring system for accurately measuring the PH of an absorption tower according to claim 3, wherein the PH measuring probe (2) comprises a hollow insert rod (14), and a PH electrode (15) is arranged at the bottom end of the insert rod (14); the plug rod (14) is provided with a second connecting block (16), an internal thread groove (17) is formed in the second connecting block (16), and the second connecting block (16) is in threaded connection with the first connecting block (10) through the internal thread groove (17).
5. A measuring system for accurately measuring the PH of an absorption tower according to claim 4, wherein one end of the flushing pipe (4) extends into the measuring cylinder (1) and is aligned with the PH electrode (15), and a solenoid valve (20) is provided at a portion of the flushing pipe (4) located outside the measuring cylinder (1).
6. A measuring system for accurately measuring the PH of an absorption tower according to any one of claims 1-5, wherein the stabilizer plate (3) is provided with a plurality of stabilizer holes (18).
7. A measuring system for accurately measuring the PH of an absorption tower according to any one of claims 1-5, wherein a manual valve (19) is provided on the inlet pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322413517.0U CN220752015U (en) | 2023-09-06 | 2023-09-06 | Measurement system for accurately measuring PH of absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322413517.0U CN220752015U (en) | 2023-09-06 | 2023-09-06 | Measurement system for accurately measuring PH of absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220752015U true CN220752015U (en) | 2024-04-09 |
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ID=90550395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322413517.0U Active CN220752015U (en) | 2023-09-06 | 2023-09-06 | Measurement system for accurately measuring PH of absorption tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220752015U (en) |
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2023
- 2023-09-06 CN CN202322413517.0U patent/CN220752015U/en active Active
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