CN115164296A - Differential pressure measuring device for different clean rooms - Google Patents
Differential pressure measuring device for different clean rooms Download PDFInfo
- Publication number
- CN115164296A CN115164296A CN202210556661.7A CN202210556661A CN115164296A CN 115164296 A CN115164296 A CN 115164296A CN 202210556661 A CN202210556661 A CN 202210556661A CN 115164296 A CN115164296 A CN 115164296A
- Authority
- CN
- China
- Prior art keywords
- differential pressure
- air guide
- side wall
- aluminum alloy
- clean rooms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 17
- 230000037431 insertion Effects 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 12
- 238000009530 blood pressure measurement Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 229910000553 6063 aluminium alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000867 larynx Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
- F24F3/167—Clean rooms, i.e. enclosed spaces in which a uniform flow of filtered air is distributed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a differential pressure measuring device used among different clean rooms, which comprises: the pressure difference sensor is provided with two pressure interfaces; one end of the air pipe is connected with a pressure interface; and the air guide joint comprises an aluminum alloy air guide pipe arranged in the side wall of the clean room in a penetrating manner, the aluminum alloy air guide pipe is provided with a first end and a second end which are opposite, the first end extends to the inner side of the side wall, a sealing flange is formed at the port of the first end, a circle is arranged in the circumferential direction of the aluminum alloy air guide pipe along the sealing flange, the sealing flange is pressed against the inner side of the side wall, the second end extends to the outer side of the side wall, the second end is detachably connected with a locking piece pressed against the outer side of the side wall, the second end is connected with a plugging part, the plugging part is detachably inserted into the other end of the air pipe, a pore passage is formed inside the plugging part, and the pore passage is communicated with the inner cavity of the aluminum alloy air guide pipe and the inner cavity of the air pipe. The invention solves the problem that the existing differential pressure sensor is not suitable for a clean room due to the self-contained air nozzle.
Description
Technical Field
The invention relates to the technical field of clean room equipment, in particular to a pressure difference measuring device used among different clean rooms.
Background
Clean rooms with different cleanliness grades are available in pharmaceutical factories, hospitals, precision instrument manufacturing plants and other places. In order to ensure that the product is not polluted by the production environment, the dust-free workshop certification of a clean room is carried out before the product is put into production. Since a clean room is provided with an air conditioning autonomous system, which is a necessary condition for dust-free shop authentication, an air conditioning autonomous system facility of the clean room is indispensable.
The air pressure difference between the clean rooms of different grades is important data measured by the air conditioning automatic control system of the clean room. Therefore, the installation of the differential pressure sensor between clean rooms, especially the terminal device for connecting the differential pressure sensor air pipe is very important. The air faucet is designed mainly for an air pipe, not only needs to be fixed by using a fast wire, but also is made of PVC (polyvinyl chloride), and the shape, the corrosion resistance and the applicable environment of the air faucet do not meet the requirements of a clean room environment on the air faucet.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
In order to overcome the defects in the prior art, a differential pressure measuring device used among different clean rooms is provided so as to solve the problem that the existing differential pressure sensor with an air nozzle is not suitable for the clean rooms.
To achieve the above object, there is provided a differential pressure measuring apparatus for use between different clean rooms, comprising:
a differential pressure sensor having two pressure ports;
one end of the air pipe is connected with the pressure interface; and
the air guide joint comprises an aluminum alloy air guide pipe used for being arranged in a side wall of a clean room in a penetrating mode, the aluminum alloy air guide pipe is provided with a first end and a second end which are opposite, the first end extends to the inner side of the side wall, a sealing flange is formed at a port of the first end and is arranged in the circumferential direction of the aluminum alloy air guide pipe, the sealing flange is pressed against the inner side of the side wall, the second end extends to the outer side of the side wall, a pressing member is detachably connected to the second end and presses against the outer side of the side wall, the second end is connected with a plugging portion, the plugging portion is detachably inserted into the other end of the air pipe, a hole channel is formed in the inner portion of the plugging portion, and the hole channel is communicated with an inner cavity of the aluminum alloy air guide pipe and an inner cavity of the air pipe.
Further, the side of the blocking flange facing the second end is coated with an elastic blocking layer.
Furthermore, the second end is provided with an external thread, the fastening piece is provided with a threaded through hole, and the threaded through hole of the fastening piece is screwed with the external thread of the second end.
Furthermore, an annular groove is formed on the circumferential surface of the insertion part.
Furthermore, the number of the annular grooves is multiple, and the annular grooves are arranged along the axial direction of the insertion part.
Further, the tank bottom surface has a first side far away from the second end and is close to the second side of second end, the tank bottom surface certainly first side is to the direction orientation of second side the notch slope setting of annular groove.
Furthermore, the inserting part and the air guide joint are integrally formed.
The aluminum alloy air guide pipe for the pressure difference measuring device between different clean rooms is made of aluminum alloy bars, has the characteristic of strong corrosion resistance, and meets the environmental requirement of alcohol spraying sterilization of the clean rooms. In addition, the measurement function of the differential pressure sensor is met, and meanwhile, the hidden danger of air leakage and secondary pollution of a clean room can be avoided. The external diameter on the shutoff edge of a wing is greater than the fenestrate internal diameter of lateral wall (roof or wall of toilet), and the shutoff edge of a wing makes its side with the lateral wall closely laminate simultaneously, prevents on the one hand that the device body from deviating from, and on the other hand plays dust seal's effect to and the clean room alcohol sprays sterile environmental requirement.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a differential pressure measurement device used between different clean rooms according to an embodiment of the present invention.
Figure 2 is a schematic structural view of a connection node of a bleed air connection to a side wall according to an embodiment of the invention.
Figure 3 is a schematic structural view of a bleed air connection according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 3, the present invention provides a differential pressure measuring apparatus for use between different clean rooms, including: differential pressure sensor 1, air pipe 2 and air guide joint 3
A differential pressure sensor is used to measure the difference between the pressures of the two clean rooms. In this embodiment, the differential pressure sensor housing is made of aluminum alloy or stainless steel. The differential pressure sensor 1 has two pressure connections. The pressure sensor is installed in a ceiling interlayer of the clean room.
One end of the air pipe 2 is connected with a pressure interface, namely, two pressure structures of the differential pressure sensor are respectively connected with an air pipe.
The air guide joint 3 comprises an aluminum alloy air guide pipe 31, a fastening piece 32 and an inserting part 33. Wherein, the aluminum alloy bleed pipe 31 is made of 6063 aluminum alloy bar. The aluminum alloy air guide pipe 31 has the characteristic of strong corrosion resistance, and meets the environmental requirement of alcohol spraying disinfection of a clean room.
An aluminium alloy air-entraining duct 31 is provided for penetrating into the side walls 4 of the clean room. The aluminium alloy bleed conduit 31 has opposite first and second ends. A first end of the aluminium alloy bleed air duct 31 extends to the inside of the side wall 4. The end opening of the first end of the aluminum alloy bleed air pipe 31 is formed with a blocking flange 311. The blocking flange 311 is arranged in a circle along the circumferential direction of the aluminum alloy bleed air pipe 31. The blocking flange 311 presses against the inside of the side wall 4. A second end of the aluminium alloy bleed pipe 31 extends outside the side wall 4. A second end of the aluminum alloy bleed air pipe 31 is detachably connected with a fastening member 32. The fastening piece 32 is pressed against the fastening piece 32 on the outer side of the side wall 4, so that the fastening flange is used for fastening the through hole of the side wall and the pipe wall of the aluminum alloy air guide pipe.
The external diameter on the shutoff edge of a wing is greater than the fenestrate internal diameter of lateral wall (roof or wall of toilet), and the shutoff edge of a wing makes its side with the lateral wall closely laminate simultaneously, prevents on the one hand that the device body from deviating from, and on the other hand plays dust seal's effect to and the clean room alcohol sprays sterile environmental requirement.
The second end of the aluminum alloy bleed air pipe 31 is connected with a plug part 33. The insertion portion 33 is detachably inserted into the other end of the air tube 2. The interior of the socket 33 is formed with a hole. The pore canal is communicated with the inner cavity of the aluminum alloy air entraining pipe 31 and the inner cavity of the air pipe 2.
In installing the differential pressure measuring device for different clean rooms of the invention, the differential pressure sensor is installed in the ceiling interlayer of the clean room, and a drill is used to vertically perforate from inside to outside of the room on the side wall (top plate or wall plate) of two clean rooms (including a high-cleanliness class clean room A and a low-cleanliness class clean room B) which need to measure the air differential pressure. And one installer is respectively arranged inside and outside the opening for cooperative installation. And (3) the aluminum alloy air guide pipe of the guide wall joint penetrates out from the indoor to the outdoor, so that the blocking flange is pressed against the indoor side of the side wall, and the blocking flange is propped against by a hand. After an installer at one side outside the clean room sees the exposed insertion part, the fastening piece is installed at the second end of the aluminum alloy air inlet pipe and locked on the side wall. And finally, inserting the air pipe of the pressure interface of the differential pressure sensor into the insertion part and inserting the air pipe into the root part, and fixing the air pipe and the insertion part together by using friction force.
The differential pressure measuring device for different clean rooms provided by the invention can meet the measuring function of the differential pressure sensor, and can avoid hidden troubles of air leakage and secondary pollution of the clean rooms. When meeting the high pressure difference environment, can cooperate the metal larynx hoop to fix in the outside of trachea in order to lock the trachea and attach to grafting portion to the requirement of different pressure difference environment.
The side of the sealing flange 311 facing the second end is coated with an elastic sealing layer. According to the blocking flange of the aluminum alloy air guide pipe for the pressure difference measuring device between different clean rooms, the contact surface of the blocking flange and the side wall is tightly attached without a redundant vertical surface in a chamfering mode, so that the blocking flange is convenient to wipe and cannot store dirt and scale.
In a preferred embodiment, the second end of the aluminum alloy bleed air pipe is provided with external threads. The fastening member 32 is provided with a threaded through hole. The threaded through hole of the fastening member 32 is screwed with the external thread of the second end.
In the present embodiment, the circumferential surface of the socket 33 is formed with an annular groove 330. The number of the annular grooves 330 is plural, and the plural annular grooves 330 are provided along the axial direction of the insertion part 33. After the other end of the air pipe is sleeved on the insertion part, the air pipe can be prevented from slipping off the insertion part by the annular grooves. In addition, when the tracheal cannula is matched with the hose clamp for use, the tracheal cannula can be firmly locked on the insertion part, so that the airtightness between the tracheal cannula and the insertion part is ensured, and the tracheal cannula is airtight.
In this embodiment, the slot floor has a first side distal from the second end and a second side proximate to the second end. The groove bottom surface is inclined toward the notch of the annular groove 330 from the first side to the second side.
In a preferred embodiment, the insertion portion 33 is integrally formed with the air guide joint 3. The inserting part 33 and the air guide joint 3 are made of aluminum alloy. The insertion part 33 adopts a pagoda joint structure, and the outer diameter is matched with the inner diameter of the air pipe, so that the smooth insertion of the air pipe and the fastening after the insertion are ensured.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. A differential pressure measurement device for use between different clean rooms, comprising:
a differential pressure sensor having two pressure ports;
one end of the air pipe is connected with the pressure interface; and
the air guide joint comprises an aluminum alloy air guide pipe used for being arranged in a side wall of a clean room in a penetrating mode, the aluminum alloy air guide pipe is provided with a first end and a second end which are opposite, the first end extends to the inner side of the side wall, a sealing flange is formed at a port of the first end and is arranged in the circumferential direction of the aluminum alloy air guide pipe, the sealing flange is pressed against the inner side of the side wall, the second end extends to the outer side of the side wall, a pressing member is detachably connected to the second end and presses against the outer side of the side wall, the second end is connected with a plugging portion, the plugging portion is detachably inserted into the other end of the air pipe, a hole channel is formed in the inner portion of the plugging portion, and the hole channel is communicated with an inner cavity of the aluminum alloy air guide pipe and an inner cavity of the air pipe.
2. The differential pressure measuring device for use between different clean rooms according to claim 1, characterized in that the side of the blocking flange facing the second end is coated with an elastic blocking layer.
3. The differential pressure measuring device for different clean rooms according to claim 1, wherein the second end is provided with an external thread, the locking member is provided with a threaded through hole, and the threaded through hole of the locking member is screwed with the external thread of the second end.
4. A differential pressure measuring device for use between different clean rooms according to claim 1, wherein the circumferential surface of the insertion part is formed with an annular groove.
5. The differential pressure measuring device for use between different clean rooms according to claim 4, wherein the number of the annular grooves is plural, and the plural annular grooves are arranged along an axial direction of the insertion part.
6. The apparatus for measuring differential pressure between different clean rooms according to claim 5, wherein the tank bottom surface has a first side remote from the second end and a second side close to the second end, the tank bottom surface being disposed obliquely from the first side to the second side towards the mouth of the annular groove.
7. The differential pressure measurement device for between different clean rooms according to claim 1, characterized in that the plug-in part is integrally formed with the air guide joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210556661.7A CN115164296A (en) | 2022-05-19 | 2022-05-19 | Differential pressure measuring device for different clean rooms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210556661.7A CN115164296A (en) | 2022-05-19 | 2022-05-19 | Differential pressure measuring device for different clean rooms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115164296A true CN115164296A (en) | 2022-10-11 |
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ID=83484103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210556661.7A Pending CN115164296A (en) | 2022-05-19 | 2022-05-19 | Differential pressure measuring device for different clean rooms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115164296A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110214498A1 (en) * | 2010-03-02 | 2011-09-08 | Fadhel Rezgui | Flow restriction insert for differential pressure measurement |
| CN203848874U (en) * | 2014-05-06 | 2014-09-24 | 杨晓林 | Pharmaceutical clean room multifunction parameter display sensor |
| CN205826197U (en) * | 2016-06-30 | 2016-12-21 | 福州外语外贸学院 | Water plants plant equipment pressure reduction pressure transducer |
| CN206891641U (en) * | 2017-05-24 | 2018-01-16 | 奥星制药设备（石家庄）有限公司 | The differential pressure indicator free of demolition that declines |
| CN209606000U (en) * | 2019-01-17 | 2019-11-08 | 柏诚工程股份有限公司 | A kind of toilet's differential pressure indicator assigns structure |
| CN110595671A (en) * | 2019-10-12 | 2019-12-20 | 中国电子系统工程第二建设有限公司 | Device for testing pressure difference of clean room |
| CN210292156U (en) * | 2019-07-30 | 2020-04-10 | 蔡自海 | Toilet's pressure differential automatic regulating apparatus |
-
2022
- 2022-05-19 CN CN202210556661.7A patent/CN115164296A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110214498A1 (en) * | 2010-03-02 | 2011-09-08 | Fadhel Rezgui | Flow restriction insert for differential pressure measurement |
| CN203848874U (en) * | 2014-05-06 | 2014-09-24 | 杨晓林 | Pharmaceutical clean room multifunction parameter display sensor |
| CN205826197U (en) * | 2016-06-30 | 2016-12-21 | 福州外语外贸学院 | Water plants plant equipment pressure reduction pressure transducer |
| CN206891641U (en) * | 2017-05-24 | 2018-01-16 | 奥星制药设备（石家庄）有限公司 | The differential pressure indicator free of demolition that declines |
| CN209606000U (en) * | 2019-01-17 | 2019-11-08 | 柏诚工程股份有限公司 | A kind of toilet's differential pressure indicator assigns structure |
| CN210292156U (en) * | 2019-07-30 | 2020-04-10 | 蔡自海 | Toilet's pressure differential automatic regulating apparatus |
| CN110595671A (en) * | 2019-10-12 | 2019-12-20 | 中国电子系统工程第二建设有限公司 | Device for testing pressure difference of clean room |
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Application publication date: 20221011 |