CN216128778U - Storage tank nitrogen sealing protection device - Google Patents
Storage tank nitrogen sealing protection device Download PDFInfo
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- CN216128778U CN216128778U CN202122055941.3U CN202122055941U CN216128778U CN 216128778 U CN216128778 U CN 216128778U CN 202122055941 U CN202122055941 U CN 202122055941U CN 216128778 U CN216128778 U CN 216128778U
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Abstract
The utility model relates to a nitrogen seal protection device for a storage tank, which comprises the storage tank, an air inlet pipeline, a first regulating valve, at least one pressure sensor, an exhaust valve, an air outlet pipeline, a second regulating valve and a controller, wherein each storage tank corresponds to the air inlet pipeline and the air outlet pipeline, the exhaust valve is arranged on the storage tank and is directly communicated with the storage tank, and an air inlet pipe and the exhaust valve are relatively independent; therefore, the situation that the air inlet pipeline is communicated with the outside through the emptying valve can not occur, at least one pressure sensor is arranged for each storage tank, the pressure sensor is used for detecting the pressure value in the storage tank, the controller controls the action of the first regulating valve, the second regulating valve or the emptying valve to supplement air or exhaust air according to the pressure value detected by the pressure sensor, and the pressure value in the storage tank can be ensured to be constant and be micro-positive pressure.
Description
Technical Field
The utility model relates to the technical field of nitrogen seal, in particular to a storage tank nitrogen seal protection device.
Background
The nitrogen-sealed protection device for the storage tank can generally protect low-flash-point liquid and reduce the hidden danger of flash-fire explosion, such as alcohol. The edible oil can be protected to prevent the oxidation of the materials.
Traditional storage tank nitrogen seals protection device is because an intake pipe is shared to two storage tanks, and urgent relief valve sets up in the intake pipe, consequently can the following condition appear: one storage tank is discharging and needs to be charged; the other storage tank is feeding, when overpressure occurs, the nitrogen discharging valve needs to be opened urgently, the air inlet pipeline is communicated with the outside atmosphere at the moment, the pressure of the air inlet pipeline is reduced, the air is not enough to be supplied to the storage tank needing air inlet, and the negative pressure condition occurs.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a nitrogen seal protection device for a storage tank, which can maintain the pressure in the storage tank constant and at a slight positive pressure.
A storage tank nitrogen seal protection device comprising:
a storage tank;
one end of the air inlet pipeline is directly communicated with the storage tank;
the first regulating valve is arranged on the air inlet pipeline and used for controlling the opening and closing of the air inlet pipeline;
the pressure sensor is arranged on the storage tank and used for detecting the pressure in the storage tank;
the emptying valve is arranged on the storage tank and is directly communicated with the storage tank;
one end of the air outlet pipeline is directly communicated with the storage tank;
the second regulating valve is arranged on the air outlet pipeline and used for controlling the opening and closing of the air outlet pipeline; and
and the controller is electrically connected with the first regulating valve, the pressure sensor, the emptying valve and the second regulating valve.
In one embodiment, the storage tank further comprises a safety breather valve, and the safety breather valve is directly arranged on the storage tank and is independent from the air inlet pipeline.
In one embodiment, the number of the pressure sensors is two, and the pressure sensors are respectively a first pressure sensor and a second pressure sensor, and the first pressure sensor and the second pressure sensor are both used for detecting the pressure in the storage tank.
In one embodiment, a filter is further arranged on the air inlet pipeline, and the filter is positioned in front of the first regulating valve.
In one embodiment, a pressure reducing valve is further disposed on the air inlet pipeline, and the pressure reducing valve is disposed between the filter and the first regulating valve.
In one embodiment, the first regulating valve comprises a first automatic valve, a first valve body and a first driving mechanism, the first automatic valve and the first driving mechanism are electrically connected with the controller, and the first driving mechanism is used for controlling the opening and closing degree of the first valve body.
In one embodiment, the second regulating valve comprises a second automatic valve, a second valve body and a second driving mechanism, the second automatic valve and the second driving mechanism are electrically connected with the controller, and the second driving mechanism is used for controlling the opening and closing degree of the second valve body.
In one embodiment, the device further comprises an alarm, and the alarm is electrically connected with the controller.
In one embodiment, the device further comprises a feeding pipeline, wherein the feeding pipeline is communicated with the storage tank, and a first control valve is arranged on the feeding pipeline.
In one embodiment, the device further comprises a discharge pipeline, wherein the discharge pipeline is communicated with the storage tank, and a second control valve is arranged on the discharge pipeline.
The storage tank nitrogen sealing protection device at least has the following advantages:
each storage tank corresponds to an air inlet pipeline and an air outlet pipeline, the emptying valve is arranged on the storage tank and is directly communicated with the storage tank, and the air inlet pipe and the emptying valve are relatively independent; when the temperature in the storage tank is discharged or reduced and the pressure sensor detects that the pressure of nitrogen in the storage tank is reduced, the pressure sensor transmits a signal to the controller, the controller controls the first regulating valve to be opened (at the moment, the second regulating valve is in a closed state), air is supplied to the storage tank through the air inlet pipeline, and the pressure value in the storage tank is kept constant at a preset value; when the temperature in the storage tank is increased or the temperature in the storage tank is increased, the pressure sensor transmits a signal to the controller when detecting the increase of the nitrogen pressure of the storage tank, the controller controls the second regulating valve to be opened (at the moment, the first regulating valve is in a closed state), the air is exhausted through the air outlet pipeline, and the pressure value in the storage tank is maintained to be constant at a preset value. When the pressure sensor detects that the pressure value in the storage tank is smaller than the lower allowable pressure limit of the storage tank, the controller controls the emptying valve to perform emergency air supply, and when the pressure sensor detects that the pressure value in the storage tank is larger than the upper allowable pressure limit of the storage tank, the controller controls the emptying valve to perform emergency exhaust. Therefore, the situation that the air inlet pipeline is communicated with the outside through the emptying valve can not occur, at least one pressure sensor is arranged for each storage tank, the pressure sensor is used for detecting the pressure value in the storage tank, the controller controls the action of the first regulating valve, the second regulating valve or the emptying valve to supplement air or exhaust air according to the pressure value detected by the pressure sensor, and the pressure value in the storage tank can be ensured to be constant and be micro-positive pressure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a nitrogen seal for a storage tank according to an embodiment.
Description of reference numerals:
10. a storage tank nitrogen seal protection device; 100. a storage tank; 200. an air intake duct; 300. a first regulating valve; 400. an evacuation valve; 500. an air outlet pipe; 600. a second regulating valve; 700. a controller; 810. a feed line; 820. a first control valve; 830. a discharge pipeline; 840. a second control valve; 310. a first automatic valve; 320. a first valve body; 330. a first drive mechanism; 210. a filter; 220. a pressure reducing valve; 910. a first pressure sensor; 920. a second pressure sensor; 610. a second automatic valve; 620. a second valve body; 630. a second drive mechanism; 101. a safety breather valve; 102. an alarm.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Referring to fig. 1, a nitrogen-sealed storage tank protection device 10 according to an embodiment of the present invention is mainly used for storing food oil and other materials, and introducing nitrogen into a storage tank 100 for protection to prevent the food oil from being oxidized. Specifically, the storage tank nitrogen sealing protection device 10 includes a storage tank 100, an air inlet pipe 200, a first regulating valve 300, at least one pressure sensor, an evacuation valve 400, an air outlet pipe 500, a second regulating valve 600, and a controller 700.
The tank 100 is used to store materials. Specifically, the storage tank nitrogen sealing protection device 10 further includes a feeding pipeline 810, the feeding pipeline 810 is communicated with the storage tank 100, and the material enters the storage tank 100 through the feeding pipeline 810. The feeding pipeline 810 is provided with a first control valve 820, and the first control valve 820 is used for controlling the opening and closing of the feeding pipeline 810. The storage tank nitrogen sealing protection device 10 further comprises a discharge pipeline 830, the discharge pipeline 830 is communicated with the storage tank 100, and the material flows out of the storage tank 100 through the discharge pipeline 830. The discharging pipeline 830 is further provided with a second control valve 840, and the second control valve 840 is used for controlling the opening and closing of the discharging pipeline 830.
One end of the gas inlet pipe 200 is directly communicated with the storage tank 100, and the other end is communicated with a gas supply device, the gas supply device provides protective gas such as nitrogen, and the protective gas enters the storage tank 100 through the gas inlet pipe 200 to protect the materials in the storage tank 100.
The first regulating valve 300 is disposed on the intake duct 200, the first regulating valve 300 is electrically connected to the controller 700, and the first regulating valve 300 is used for controlling the opening and closing of the intake duct 200. Specifically, the first regulator valve 300 includes a first automatic valve 310, a first valve body 320, and a first driving mechanism 330, the first automatic valve 310 and the first driving mechanism 330 are electrically connected to the controller 700, and the first driving mechanism 330 is used to control the degree of opening and closing of the first valve body 320. The controller 700 controls the opening and closing of the air inlet pipe 200 by controlling the opening and closing of the first automatic valve 310, and the controller 700 controls the opening and closing degree of the first valve body 320 by controlling the first driving mechanism 330 to adjust the flow rate of the air inlet pipeline, so as to ensure the constant pressure of the nitrogen in the tank.
Further, a filter 210 is disposed on the air inlet pipe 200, and the filter 210 is located in front of the first regulating valve 300 (that is, the gas passes through the filter 210 and then passes through the first regulating valve 300). The filter 210 is used for filtering external impurities, and preventing the impurities from entering the storage tank 100 through the air inlet pipe 200 to pollute the materials in the storage tank 100.
Further, a pressure reducing valve 220 is further disposed on the air inlet pipe 200, and the pressure reducing valve 220 is disposed between the filter 210 and the first regulating valve 300. The pressure reducing valve 220 is used to reduce the pressure of the gas inlet pipe 200, for example, when the pressure of the nitrogen gas supplied from the factory is too large, the pressure reducing valve 220 may reduce the pressure of the nitrogen gas to a reasonable range when the nitrogen gas passes through the pressure reducing valve 220. Of course, in other embodiments, the pressure reducing valve 220 may be omitted if the pressure of the nitrogen provided by the plant is within a reasonable range.
A pressure sensor is provided on the tank 100 for detecting the pressure inside the tank 100. The signal of the pressure sensor is transmitted to the controller 700, and the controller 700 controls the opening and closing of the inlet duct 200 and the opening and closing of the outlet duct 500 according to the pressure value in the storage tank 100 detected by the pressure sensor.
Specifically, in the present embodiment, the number of the pressure sensors is two, and the pressure sensors are a first pressure sensor 910 and a second pressure sensor 920, respectively, and the first pressure sensor 910 and the second pressure sensor 920 are both used for detecting the pressure in the storage tank 100. The controller 700 is electrically connected to the first pressure sensor 910, and the controller 700 controls the opening and closing of the air inlet pipeline or the air outlet pipeline according to the pressure value in the storage tank 100 detected by the first pressure sensor 910. The second pressure sensor 920 is configured to perform online real-time calibration, that is, the pressure value in the storage tank 100 detected by the first pressure sensor 910 is a first pressure value, the pressure value in the storage tank 100 detected by the second pressure sensor 920 is a second pressure value, a difference value is calculated by comparing the first pressure value with the second pressure value, and if the difference value is within an allowable range, the first pressure sensor 910 does not need to be adjusted; if the difference exceeds a certain range, an operator is reminded that the first pressure sensor 910 needs to be calibrated, so that the stability and reliability of the system are improved.
The evacuation valve 400 is disposed on the tank 100 and is in direct communication with the tank 100. The evacuation valve 400 is also electrically connected to the controller 700, and the controller 700 controls the evacuation valve 400 to open and close. That is, the evacuation valve 400 does not directly communicate with the intake duct 200, and therefore, the opening and closing of the evacuation valve 400 cannot affect the pressure in the intake duct 200.
One end of the air outlet pipe 500 is directly communicated with the storage tank 100. Through the air outlet pipeline 500, the excessive pressure in the storage tank 100 can be discharged, and the constant pressure in the storage tank 100 is ensured. The second regulating valve 600 is disposed on the air outlet pipe 500, the second regulating valve 600 is used for controlling the opening and closing of the air outlet pipe 500, and the second regulating valve 600 is electrically connected to the controller 700. The opening and closing of the air outlet pipe 500 is controlled by the controller 700 controlling the opening and closing of the second regulating valve 600. The one end of the pipeline 500 of giving vent to anger is direct to be linked together with storage tank 100, and the pipeline 500 of giving vent to anger is as special pipeline of losing air, compares in the tradition and relies on the breather valve and promptly let out the nitrogen valve scheme that exhausts, and the storage tank nitrogen of this embodiment seals protection device 10 security is higher, and the nitrogen pressure in the storage tank 100 can not fluctuate greatly, is difficult to sneak into the air.
The second regulating valve 600 includes a second automatic valve 610, a second valve body 620, and a second driving mechanism 630, wherein the second automatic valve 610 and the second driving mechanism 630 are electrically connected to the controller 700, and the second driving mechanism 630 is used for controlling the opening and closing degree of the second valve body 620. The controller 700 controls the opening and closing of the gas outlet pipe 500 by controlling the opening and closing of the second automatic valve 610, and the controller 700 controls the opening and closing degree of the second valve body 620 by controlling the second driving mechanism 630 to adjust the flow rate of the gas outlet pipeline, so as to ensure the constant pressure of the nitrogen in the tank.
Further, the storage tank nitrogen sealing protection device 10 further comprises a safety breather valve 101, wherein the safety breather valve 101 is directly arranged on the storage tank 100 and is mutually independent from the air inlet pipeline 200. In the traditional technical scheme, the safety breather valve 101 is directly arranged on an air inlet pipeline, under the condition of the air inlet pipeline with a fixed pipe diameter, when the medium flow in the air inlet pipeline is larger, the pressure in the pipeline is higher, when the pressure reaches the action value of the safety breather valve 101, the safety breather valve 101 can be caused to act, at the moment, the pressure in the storage tank 100 does not reach the action value of the breather valve, and the safety breather valve 101 at the moment belongs to misoperation. In the present embodiment, since the safety breather valve 101 and the intake pipe 200 are independent from each other, neither the intake air amount nor the exhaust gas amount of the intake pipe 200 affects the operation of the safety breather valve 101, and further, the malfunction of the safety breather valve 101 does not occur.
Further, the tank nitrogen sealing protection device 10 further comprises an alarm 102, and the alarm 102 is electrically connected with the controller 700. When the pressure value in the storage tank 100 is too large or too small, the alarm 102 gives an alarm to remind an operator of overhauling. Or, when the difference between the pressures in the storage tank 100 detected by the first pressure sensor 910 and the second pressure sensor 920 is greater than the control range, the alarm 102 gives an alarm to remind the operator to repair or replace the first pressure sensor 910.
Each storage tank 100 corresponds to an air inlet pipeline 200 and an air outlet pipeline 500, the evacuation valve 400 is arranged on the storage tank 100 and is directly communicated with the storage tank 100, and the air inlet pipe and the evacuation valve 400 are relatively independent.
When the storage tank 100 discharges materials or the temperature in the storage tank 100 is reduced, and the pressure sensor detects that the pressure of nitrogen in the storage tank 100 is reduced, the pressure sensor transmits a signal to the controller 700, the controller 700 controls the first regulating valve 300 to be opened (at this time, the second regulating valve 600 is in a closed state), the air is supplied to the storage tank 100 through the air inlet pipeline 200, and the pressure value in the storage tank 100 is maintained to be constant at a preset value.
When the temperature in the storage tank 100 is increased or the pressure sensor detects that the pressure of the nitrogen in the storage tank 100 is increased, the pressure sensor transmits a signal to the controller 700, and the controller 700 controls the second regulating valve 600 to open (at this time, the first regulating valve 300 is in a closed state), and exhausts the air through the air outlet pipe 500, so as to maintain the pressure in the storage tank 100 constant at a preset value.
When the pressure sensor detects that the pressure value in the storage tank 100 is smaller than the lower allowable pressure limit of the storage tank 100, the controller 700 controls the evacuation valve 400 to perform emergency air supply, and when the pressure sensor detects that the pressure value in the storage tank 100 is larger than the upper allowable pressure limit of the storage tank 100, the controller 700 controls the evacuation valve 400 to perform emergency air evacuation.
Therefore, the situation that the air inlet pipeline 200 is communicated with the outside through the evacuation valve 400 does not occur, at least one pressure sensor is arranged for each storage tank 100, the pressure sensor is used for detecting the internal pressure value of the storage tank 100, and the controller 700 controls the action of the first regulating valve 300, the second regulating valve 600 or the evacuation valve 400 according to the pressure value detected by the pressure sensor to supplement air or exhaust air, so that the pressure value in the storage tank 100 can be ensured to be constant and slightly positive.
Before the storage tank nitrogen seal protection device 10 is started, 5 pressure values are preset from low to high and are marked as P1, P2, P3, P4 and P5, namely P1 < P2 < P3 < P4 < P5. Wherein, P1 is greater than the inspiratory pressure of the safety breather valve 101 and is greater than or equal to the allowable lower pressure limit of the storage tank 100; the exhaust action pressure of the safety breather valve 101 is more than P5 and less than or equal to the allowable upper pressure limit of the storage tank 100.
When the storage tank 100 is discharged or the temperature is reduced, the pressure of the nitrogen in the storage tank 100 is reduced, and when the feedback of the first pressure sensor 910 is less than P2, the controller 700 controls the first automatic valve 310 to open, so as to supplement air into the storage tank 100 through the air inlet pipe 200, and the first driving mechanism 330 controls the opening and closing degree of the first valve body 320, so as to maintain the air pressure in the storage tank 100 to be constant at P3.
When the nitrogen pressure in the storage tank 100 rises when the storage tank 100 is fed or the temperature rises, and the first pressure sensor 910 feeds back > P4, the controller 700 controls the second automatic valve 610 to open, exhausts the gas through the gas outlet pipe 500, and the second driving mechanism 630 controls the opening and closing degree of the second valve body 620, so as to maintain the pressure in the storage tank 100 constant at P3. The first automatic valve 310 and the second automatic valve 610 are not open at the same time.
When the feedback of the first pressure sensor 910 is less than P1, the controller 700 opens the evacuation valve 400 to make air supply; or when the feedback of the first pressure sensor 910 is greater than P5, the controller 700 opens the evacuation valve 400 to perform evacuation as a second safety guarantee; and simultaneously, an alarm is given to remind an operator to overhaul.
If the evacuation valve 400 operates abnormally, the safety breather valve 101 operates as a third safeguard when the pressure in the storage tank 100 reaches the operating pressure of the safety breather valve 101; and simultaneously alarms to remind the operator to overhaul the automatic purge valve 400.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Claims (10)
1. A storage tank nitrogen seal protection device, characterized in that, the storage tank nitrogen seal protection device includes:
a storage tank;
one end of the air inlet pipeline is directly communicated with the storage tank;
the first regulating valve is arranged on the air inlet pipeline and used for controlling the opening and closing of the air inlet pipeline;
the pressure sensor is arranged on the storage tank and used for detecting the pressure in the storage tank;
the emptying valve is arranged on the storage tank and is directly communicated with the storage tank;
one end of the air outlet pipeline is directly communicated with the storage tank;
the second regulating valve is arranged on the air outlet pipeline and used for controlling the opening and closing of the air outlet pipeline; and
and the controller is electrically connected with the first regulating valve, the pressure sensor, the emptying valve and the second regulating valve.
2. The storage tank nitrogen seal protection device of claim 1, further comprising a safety breather valve disposed directly on said storage tank and disposed independently of said inlet conduit.
3. The storage tank nitrogen seal protection device of claim 1, wherein the number of said pressure sensors is two, respectively a first pressure sensor and a second pressure sensor, both of said first pressure sensor and said second pressure sensor being used for detecting the pressure in said storage tank.
4. The storage tank nitrogen seal protection device of claim 1, wherein a filter is further disposed on said inlet pipe, said filter being located in front of said first regulating valve.
5. The storage tank nitrogen seal protection device of claim 4, wherein a pressure relief valve is further disposed on said inlet conduit, said pressure relief valve being disposed between said filter and said first regulating valve.
6. The storage tank nitrogen seal protection device of claim 1, wherein the first regulating valve comprises a first automatic valve, a first valve body and a first driving mechanism, the first automatic valve and the first driving mechanism are electrically connected with the controller, and the first driving mechanism is used for controlling the opening and closing degree of the first valve body.
7. The storage tank nitrogen seal protection device of claim 1, wherein said second regulating valve comprises a second automatic valve, a second valve body and a second driving mechanism, said second automatic valve and said second driving mechanism are electrically connected with said controller, said second driving mechanism is used for controlling the opening and closing degree of said second valve body.
8. The storage tank nitrogen seal protection device of claim 1, further comprising an alarm, said alarm being electrically connected to said controller.
9. The storage tank nitrogen seal protection device of claim 1, further comprising a feed line, wherein the feed line is communicated with the storage tank, and a first control valve is arranged on the feed line.
10. The storage tank nitrogen seal protection device of claim 1, further comprising a discharge line, wherein the discharge line is in communication with the storage tank, and a second control valve is disposed on the discharge line.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122055941.3U CN216128778U (en) | 2021-08-27 | 2021-08-27 | Storage tank nitrogen sealing protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122055941.3U CN216128778U (en) | 2021-08-27 | 2021-08-27 | Storage tank nitrogen sealing protection device |
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| CN216128778U true CN216128778U (en) | 2022-03-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215004A (en) * | 2022-07-29 | 2022-10-21 | 武汉松石科技股份有限公司 | Method for storing and taking high-purity anhydrous alkyl sultone |
| CN118125670A (en) * | 2024-04-30 | 2024-06-04 | 沧州医学高等专科学校 | Recycling device and method for laboratory inorganic waste liquid |
-
2021
- 2021-08-27 CN CN202122055941.3U patent/CN216128778U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215004A (en) * | 2022-07-29 | 2022-10-21 | 武汉松石科技股份有限公司 | Method for storing and taking high-purity anhydrous alkyl sultone |
| CN118125670A (en) * | 2024-04-30 | 2024-06-04 | 沧州医学高等专科学校 | Recycling device and method for laboratory inorganic waste liquid |
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