CN210034394U - Sealed pressure vessel sealing point monitoring and remedying structure - Google Patents
Sealed pressure vessel sealing point monitoring and remedying structure Download PDFInfo
- Publication number
- CN210034394U CN210034394U CN201920508629.5U CN201920508629U CN210034394U CN 210034394 U CN210034394 U CN 210034394U CN 201920508629 U CN201920508629 U CN 201920508629U CN 210034394 U CN210034394 U CN 210034394U
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- Prior art keywords
- sealing
- sealed
- pressure vessel
- shell
- point
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 63
- 238000012544 monitoring process Methods 0.000 title claims description 11
- 238000004891 communication Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000004108 freeze drying Methods 0.000 description 28
- 238000000034 method Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
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Abstract
The utility model discloses a sealed point control of airtight pressure vessel and remedy structure, a serial communication port, including the cover move the sealed point outside and with airtight pressure vessel lateral surface sealing's sealed shell, be equipped with the pressure monitor who is used for detecting sealed shell internal pressure on the sealed shell, the sealed shell passes through connecting pipe and vacuum pump switch-on. The utility model discloses external environment is to the inside pollution of airtight pressure vessel when can the last dynamic seal point of effectual prevention airtight pressure vessel leaks.
Description
Technical Field
The utility model relates to a sealed pressure vessel seal point control and remedy structure belongs to pharmacy and food machinery equipment field.
Background
The vacuum freeze dryer is an electromechanical device for realizing freeze drying function, a freeze drying box is a core of the whole device as a closed pressure container, the sealing performance of the freeze drying box directly influences the overall performance of the device, the leakage amount of a sealing point directly influences the final quality of a freeze-dried product, and therefore the sealing performance of the freeze drying box has critical importance in the overall device. The freeze drying box of the vacuum freeze dryer has certain vacuum degree requirement, and the leakage of each freeze drying box must meet certain requirement, namely leakage rate.
The vacuum freeze dryer is one of closed pressure vessels, and two sealing modes generally exist in the closed pressure vessels: static seal and dynamic seal. Static seals are defaulted to be effective for a long time, only have low leakage risks, and the risk coefficient of dynamic seal leakage is highest in the sealing points of the whole closed pressure container.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the technical problem of monitoring and remedying the dynamic sealing point when the pressure container adopts dynamic sealing is solved.
In order to solve the technical problem, the technical scheme of the utility model a sealed pressure vessel seal point control and remedy structure is provided, a serial communication port, including the cover move the seal point outside and with the sealed shell of sealed pressure vessel lateral surface seal, be equipped with the pressure monitor who is used for detecting sealed shell internal pressure on the sealed shell, the sealed shell passes through connecting pipe and vacuum pump switch-on.
Preferably, a sealing shell flange is arranged on one side of the sealing shell, which is sleeved outside the dynamic sealing point and is in sealing connection with the outer side surface of the sealed pressure container.
Preferably, the outer side of the sealing shell flange is provided with a groove, and a sealing ring sealed with the outer side surface of the sealed pressure container is arranged in the groove.
Preferably, the sealing shell consists of 5 front panels, namely an upper panel, a lower panel, a left panel, a right panel, a left panel and a right panel, and the rear surface of the sealing shell is in flange sealing connection with the sealing shell.
The utility model discloses external environment is to the inside pollution of airtight pressure vessel when can effectual prevention airtight pressure vessel goes up the dynamic seal point and reveals. A vacuum sealing shell is arranged outside the dynamic sealing point, when the dynamic sealing fails, the inside of the sealed pressure container is communicated with the sealing shell, and because the pressure in the sealing shell is lower than that of the sealed pressure container, when the dynamic sealing point leaks, gas in the sealed pressure container flows into the sealing shell under the action of pressure difference, so that external airflow is prevented from flowing into the sealed pressure container, and the protection of the internal environment of the sealed pressure container is realized. And when the pressure in the sealed shell is monitored to be increased, starting a vacuum system to ensure that the pressure in the sealed shell is continuously lower than the pressure in the box body.
Drawings
FIG. 1 is a schematic diagram of a closed pressure vessel seal point monitoring and remediation structure mounted on the outside of a closed pressure vessel;
FIG. 2 is a schematic structural view of a hermetic shell assembly;
FIG. 3 is a schematic view of the gas flow after failure of the dynamic seal point.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The utility model relates to a sealed pressure vessel seal point control and remedy structure, as shown in figure 1, it includes sealed pressure vessel 1, moves seal point 5, sealed shell 6, sealing washer 3, sealed pressure vessel flange 2, sealed shell flange 7, pressure monitor 4, connecting pipe and vacuum pump 8. The sealed shell 6 is provided with a pressure monitor 4 for detecting the internal pressure of the sealed shell 6, the sealed shell 6 is connected with a vacuum pump 8 through a connecting pipe, and the pressure of the sealed shell 6 is ensured to be always lower than the pressure of the sealed pressure container 1 in the operation process of the equipment. The back of the sealing shell 6 is hermetically connected with a sealing shell flange 7 which is sleeved outside the dynamic sealing point 5 and sealed with the outer side surface of the closed pressure vessel. The outer side of the sealing shell flange 7 is provided with a groove, and a sealing ring 3 sealed with the outer side surface of the closed pressure container is arranged in the groove. The sealing shell flange 7 is hermetically connected with the sealing pressure vessel flange 2 on the outer side of the sealing pressure vessel 1 through the sealing ring 3, and the dynamic sealing point 5 is arranged in the middle of the sealing pressure vessel flange 2.
As shown in fig. 2, the seal housing 6, the seal housing flange 7, the pressure monitor 4, and the seal ring 3 together form a seal housing assembly.
The sealed shell 6 is composed of upper, lower, left and right front 5 panels 9, the five panels 9 and the sealing surface form a sealed whole, and no leakage point exists after welding. The sealing surface is of a flange type, and a sealing groove for sealing is arranged on the flange surface of the sealing shell flange 7.
In this embodiment, the sealed pressure vessel 1 is a freeze drying chamber of a vacuum freeze dryer.
As shown in fig. 3, after the dynamic seal point 5 of the freeze drying chamber of the vacuum freeze dryer is failed, the gas flow inside the freeze drying chamber body is as shown by the arrow in the figure. When the freeze-drying case (be airtight pressure vessel 1) on the dynamic seal point 5 after sealed the inefficacy, freeze-drying case communicates with each other with sealed shell 6, because the pressure in the sealed shell 6 is < freeze-drying incasement pressure all the time, consequently when the leakage point produced, the air current flow direction for from freeze-drying case flow direction seal shell 6 in, stopped external environment pollution freeze-drying incasement environment through this means.
The utility model discloses a sealed shell subassembly is set for to the freeze-drying case dynamic seal point 5 outside at original vacuum freeze dryer to the realization turns into the static seal with the dynamic seal.
The utility model discloses a sealing technique wholly realizes the principle as follows:
the freeze-drying case itself forms a confined space, at the freeze-drying case move the sealed point 5 outside installation sealed shell 6, five of them panels 9 of sealed shell 6 form sealedly through the welding, and remaining one face is equipped with sealed shell flange 7, designs the seal groove on the sealed shell flange 7. The dynamic seal point 5 of the freeze-drying box is synchronously provided with a sealing flange (namely, a sealed pressure vessel flange 2) and a sealing groove, and the sealing flange (namely, the sealed pressure vessel flange 2) of the freeze-drying box is sealed with a sealing shell flange 7 through a sealing ring 3 and is connected through bolts. Design evacuation mouth on the sealed shell 6, evacuation mouth is connected with vacuum pump 8, and vacuum pump 8 carries out the evacuation effect to sealed shell 6 for 6 internal pressure of sealed shell is less than freeze-drying incasement pressure all the time.
Through the utility model discloses a structure still can prevent that external air current from flowing into freeze-drying case and polluting the medicine after sealed inefficacy, ensures that equipment accomplishes this batch production, very big reduction the contaminated risk of medicine.
After the dynamic seal point 5 of freeze-drying case became invalid, sealed shell 6 communicates with each other with freeze-drying case, because 6 internal pressure of sealed shell is less than freeze-drying incasement pressure all the time, consequently the freeze-drying incasement gas flow can flow to and sealed shell 6 to stopped external environment to the pollution of freeze-drying incasement, except this technique still can realize the real time monitoring to dynamic seal point 5 through the control to 6 pressures of sealed shell.
The utility model discloses to the real time monitoring technique of dynamic seal point do:
through carrying out real time monitoring to 6 pressures of seal shell, because 6 pressures of seal shell are less than freeze-drying incasement pressure, freeze-drying case communicates with each other with 6 seal shells after the sealed point 5 that becomes invalid, leads to 6 internal pressure of seal shell to rise, through the control of pressure watch-dog 4 on the seal shell 6 to 6 internal pressures of seal shell, realizes the real time monitoring to the sealed point 5 that moves.
Claims (4)
1. The utility model provides a sealed point control of airtight pressure vessel and remedy structure, its characterized in that, including the cover move sealed point (5) outside and with airtight pressure vessel lateral surface sealed seal shell (6), be equipped with pressure monitor (4) that are used for detecting seal shell (6) internal pressure on seal shell (6), seal shell (6) are through connecting pipe and vacuum pump (8) switch-on.
2. A sealing point monitoring and remedying structure of a closed pressure vessel as claimed in claim 1, wherein the sealing shell (6) is provided with a sealing shell flange (7) at one side which is sleeved outside the movable sealing point (5) and is connected with the outer side surface of the closed pressure vessel in a sealing way.
3. A sealing point monitoring and remedying structure of a closed pressure vessel as claimed in claim 2, wherein the outside of the sealing shell flange (7) is provided with a groove, and a sealing ring (3) which is sealed with the outside of the closed pressure vessel is arranged in the groove.
4. A sealing point monitoring and remedying structure of a hermetic pressure vessel as claimed in claim 1, wherein the sealing case (6) is composed of 5 front panels (9) of upper, lower, left and right sides, and the rear of the sealing case (6) is connected with the sealing case flange (7) in a sealing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920508629.5U CN210034394U (en) | 2019-04-15 | 2019-04-15 | Sealed pressure vessel sealing point monitoring and remedying structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920508629.5U CN210034394U (en) | 2019-04-15 | 2019-04-15 | Sealed pressure vessel sealing point monitoring and remedying structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210034394U true CN210034394U (en) | 2020-02-07 |
Family
ID=69359578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920508629.5U Expired - Fee Related CN210034394U (en) | 2019-04-15 | 2019-04-15 | Sealed pressure vessel sealing point monitoring and remedying structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210034394U (en) |
-
2019
- 2019-04-15 CN CN201920508629.5U patent/CN210034394U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210719 Address after: 201206 No. 805, Jinhu Road, pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: SHANGHAI HARVEST PHARMACEUTICAL Co.,Ltd. Address before: 201100 building 4, 1509 Duhui Road, Minhang District, Shanghai Patentee before: SHANGHAI TOFFLON SCIENCE AND TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 |