CN113465832B - Double-pressure air tightness measuring instrument - Google Patents
Double-pressure air tightness measuring instrument Download PDFInfo
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- CN113465832B CN113465832B CN202110734061.0A CN202110734061A CN113465832B CN 113465832 B CN113465832 B CN 113465832B CN 202110734061 A CN202110734061 A CN 202110734061A CN 113465832 B CN113465832 B CN 113465832B
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 3
- 230000009977 dual effect Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000009530 blood pressure measurement Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 13
- 238000001816 cooling Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000017105 transposition Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The application discloses a double-pressure air tightness measuring instrument which comprises a shell component, a control component, an oil-water separation component, a valve island component, an air pressure detection component, an air pressure buffer component and a pressure regulating component, wherein the shell component comprises a front shell, a bottom shell and a rear shell; the air pressure buffer component comprises a pressure stabilizing tank, the pressure regulating component is connected in the air flow channel, and the pressure regulating component regulates the air pressure in the air flow channel to be kept at the first air pressure or the second air pressure. The double-pressure air tightness measuring instrument provided by the embodiment of the application has the advantages of double-pressure measurement, simplicity, portability and strong universality.
Description
Technical Field
The application relates to the technical field of air tightness measurement, in particular to a double-pressure air tightness measuring instrument.
Background
With the improvement of quality and efficiency of social economy, the development of new energy industry is greatly advanced, and the application of new energy batteries is wider. The performance of new energy batteries, such as lithium ion batteries, nickel hydrogen batteries, fuel cells, lead-acid batteries, super capacitors, and the like, directly affects new energy products, and in general, the new energy batteries need to realize conversion of electric energy through internal chemical reactions, and the chemical reactions need to be performed in a vacuum environment, so that the air tightness requirements of the new energy batteries are strict. Meanwhile, the new energy battery is commonly used together with a battery cooling system, so that the safety and stability of the new energy battery are guaranteed, the cooling system of the new energy battery at present usually adopts a liquid cooling mode, and in order to prevent liquid leakage, the air tightness of the cooling system also needs to have certain requirements. However, detecting the air tightness of the new energy battery and detecting the air tightness of the cooling system requires different test conditions and different air pressure. In the actual testing process, two sets of instruments are generally used for respectively measuring the air tightness of the battery and the air tightness of a battery cooling system, so that the operation is complex and the universality is poor.
Disclosure of Invention
The application aims to provide a double-pressure air tightness measuring instrument which has the advantages of double-pressure measurement, simplicity, portability and strong universality.
The double-pressure tightness measuring instrument comprises a shell assembly, a control assembly, an oil-water separation assembly, a valve island assembly, an air pressure detection assembly, an air pressure buffer assembly and a pressure regulating assembly, wherein the shell assembly comprises a front shell, a bottom shell and a rear shell, the front shell and the rear shell are respectively arranged at the front end and the rear end of the bottom shell, the front shell and the rear shell obliquely extend from the bottom shell to the direction close to each other, the front shell, the rear shell and the bottom shell are encircled to form an outer shell with a narrow upper part and a wide lower part, a handle part is arranged at the upper end of the outer shell, a first shell and a second shell are arranged on the front shell, the first shell and the second shell are respectively connected to the left side and the right side of the front shell, and an air inlet and an air outlet are formed in at least one of the first shell and the second shell; the control assembly is connected to the inner side of the shell assembly and comprises a display touch screen and a controller, the display touch screen is arranged on the front shell, and the display touch screen is connected with the controller; the oil-water separation component is connected to at least one of the air inlet and the air outlet; the valve island assembly is connected to the inner side of the shell assembly, an air flow channel is arranged in the valve island assembly, and the air flow channel is respectively communicated with the air inlet and the air outlet; the air pressure detection component is connected with the valve island component, and a detection terminal of the air pressure detection component is connected in an air flow channel of the valve island component; the air pressure buffer assembly is connected between the valve island assembly and the air inlet, and comprises a pressure stabilizing tank which is a container with internal air suitable for buffering gas; the pressure regulating assembly is arranged on the inner side of the shell assembly and is connected in the air flow channel, the pressure regulating assembly regulates the air pressure in the air flow channel to be kept at the first air pressure or the second air pressure, the pressure regulating assembly comprises a driving motor, a pressure regulating valve and a speed regulating shifting box, a transmission mechanism is arranged in the speed regulating shifting box, the driving motor is connected with the transmission mechanism arranged in the speed regulating shifting box and is connected with the controller, and the transmission mechanism drives the pressure regulating valve to carry out air pressure regulating action.
According to the double-pressure air tightness measuring instrument disclosed by the embodiment of the application, the control assembly, the oil-water separation assembly, the valve island assembly, the air pressure detection assembly, the air pressure buffer assembly and the pressure regulating assembly are all integrated in the shell assembly, the double-pressure air tightness measuring instrument is compact and portable in structure, and the air pressure value of air flow in a product can be stabilized at the first air pressure and the second air pressure by arranging the pressure regulating assembly, so that the air tightness of a sample under the first air pressure requirement and the air tightness of the sample under the second air pressure requirement can be detected, and the double-pressure air tightness measuring instrument is higher in universality.
In addition, the dual air tightness measuring instrument according to the above embodiment of the present application may have the following additional technical features:
in some embodiments, the first gas pressure is in the range of 10kpa or less and the second gas pressure is in the range of 10kpa to 500 kpa.
In some embodiments, the front shell is provided with a window, the display touch screen is embedded in the window, a toughened film is attached to the display touch screen, the front shell further comprises a panel, the panel covers the display touch screen and fixes the display touch screen on the panel, an opening is formed in the panel, and the opening corresponds to the display touch screen.
In some embodiments, a key is further disposed on the panel, and the key is connected to the controller.
In some embodiments, the valve island assembly comprises an island body and an electromagnetic valve, the electromagnetic valve is connected with the controller, the air flow channel is arranged in the island body, the air flow channel is internally connected with the air pressure detection assembly, a fixed position is arranged on the island body, and the air pressure detection assembly is fixedly connected with the fixed position through a fixing piece.
In some embodiments, the air pressure detection assembly includes a pressure sensor coupled to the controller.
In some embodiments, the voltage regulating assembly further comprises a bottom plate, a protruding portion and an ear portion are arranged on the bottom plate, the driving motor and the speed regulating dial box are connected to the protruding portion, and the ear portion is arranged at two opposite ends of the protruding portion along the length direction.
In some embodiments, the ear portion includes a first fold and a second fold, the first fold is disposed at an end of the base plate near the protruding portion, the first fold extends along a length direction of the base plate, and a first mounting hole is disposed on the first fold; the second is folded the ear and is located the bottom plate is kept away from the other end of bellying, the second is folded the ear and is located the bottom plate is along the opposite both sides of width direction and is followed the width direction of bottom plate extends, be equipped with the second mounting hole on the second is folded the ear, wherein, first mounting hole with the second mounting hole is through mutually supporting with the drain pan is in order to fastening connection pressure regulating subassembly.
In some embodiments, the pressure regulating valve, the surge tank and the valve island assembly are all connected in the air flow channel through hoses, wherein the surge tank and the valve island assembly are all metal containers, the surge tank and the valve island assembly are connected through air pipe connectors and the hoses, and the air pipe connectors are connected at the air flow inlet and the air flow outlet of the surge tank and the valve island assembly.
In some embodiments, the tracheal joint comprises a body portion and a connecting portion, the body portion is cuboid, the connecting portion is hollow and connected to the surface of the body portion, an air vent is arranged on the other surface of the body portion perpendicular to the surface, the air vents are communicated with each other through the connecting portion, a gasket position is arranged on the periphery of the air vent, and the gasket position is recessed into the surface of the body portion to form a step for accommodating the gasket.
The advantages of the additional features according to the embodiments of the present application will be described in detail in the detailed description that follows.
Drawings
Fig. 1 is a schematic perspective view of a dual-pressure air tightness measuring instrument according to an embodiment of the present application.
Fig. 2 is a schematic perspective view of a dual-pressure air tightness measuring instrument according to an embodiment of the present application.
Fig. 3 is a schematic perspective view of a dual-pressure air tightness measuring instrument according to an embodiment of the present application.
Fig. 4 is an exploded view of a housing structure of a dual air tightness measuring instrument according to an embodiment of the present application.
Fig. 5 is a partial schematic structural view of a dual-pressure air tightness measuring instrument according to an embodiment of the present application.
Fig. 6 is a partial schematic view of a double-pressure air tightness measuring instrument according to an embodiment of the present application.
Fig. 7 is a schematic view of an air connection of a dual-pressure air tightness meter according to an embodiment of the application.
Reference numerals:
the dual-pressure air tightness measuring instrument 100,
The device comprises a shell assembly 10, an oil-water separation assembly 30, a valve island assembly 40, a gas pressure detection assembly 50, a gas pressure buffer assembly 60, a pressure regulating assembly 70, a front shell 11, a bottom shell 12, a rear shell 13, a first shell 111, a second shell 112, a handle portion 14, a gas outlet 110, a gas inlet 120, a display touch screen 21, a controller 20, a window 130, a toughened film 210, a panel 113, an island 41, a solenoid valve 42, a bottom plate 71, a protruding portion 711, a first tab 721, a first mounting hole 720, a second tab 722, a second mounting hole 730, an ear 712, a gas pipe joint 80, a body portion 81, a connecting portion 82 and a gasket position 810.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Hereinafter, a dual air tightness measuring apparatus 100 according to an embodiment of the present application will be described in detail with reference to fig. 1 to 7, and the dual air tightness measuring apparatus 100 is applied to air tightness detection of a new energy battery pack and air tightness detection of a battery cooling system.
The dual-pressure air tightness measuring instrument 100 includes: the device comprises a shell assembly 10, a control assembly, an oil-water separation assembly 30, a valve island assembly 40, a gas pressure detection assembly 50, a gas pressure buffer assembly 60 and a pressure regulating assembly 70.
Referring to fig. 1 to 3, the housing assembly 10 includes a front case 11, a bottom case 12, and a rear case 13, the front case 11 and the rear case 13 being disposed at both front and rear ends of the bottom case 12, and the front case 11 and the rear case 13 being inclined to extend from the bottom case 12 toward a direction approaching each other, the front case 11, the rear case 13, and the bottom case 12 being surrounded to form an outer housing having a narrow upper side and a wide lower side, a handle portion 14 being provided at an upper end of the outer housing, a first housing 111 and a second housing 112 being provided on the front case 11, the first housing 111 and the second housing 112 being respectively connected to left and right sides of the front case 11, and an air inlet 120 and an air outlet 110 being provided on at least one of the first housing 111 and the second housing 112. It should be noted that the terms inner, outer, front, rear, upper, lower, left, right, etc. herein may be understood by the terms of orientation shown in fig. 1 through 3, and are used herein for convenience of understanding and description of the present invention only and are not to be construed as limiting the present invention. It will be appreciated that the structures of the control assembly, the oil-water separation assembly 30, the valve island assembly 40, etc. are combined on the inner side of the housing assembly 10, whereas the direction without the combined internal parts is the outer side.
According to the dual-pressure air tightness measuring instrument 100 of the embodiment of the application, the control assembly, the oil-water separation assembly 30, the valve island assembly 40, the air pressure detection assembly 50, the air pressure buffer assembly 60 and the pressure regulating assembly 70 are all integrated in the shell assembly 10, and the outer shell is narrow in upper part and wide in lower part, so that the installation of various components in the shell is facilitated, the space can be saved, the product structure is compact, and the whole weight is reduced. The handle part 14 is arranged at the upper end of the outer shell body, so that the novel energy battery detection device is convenient to carry, flexible transposition can be performed according to the position of a test sample, and the convenience of detecting the novel energy battery can be effectively improved.
Referring to fig. 1 and 4, the control assembly is connected to the inner side of the housing assembly 10, and includes a display touch screen 21 and a controller 20, wherein the display touch screen 21 is disposed on the front case 11, and the display touch screen 21 is connected to the controller 20. The controller 20 may be a single-chip microcomputer chip integrated with a processor, a memory, a communication module, etc.
Referring to fig. 1, the oil-water separation module 30 is connected to at least one of the air inlet 120 and the air outlet 110. In some embodiments, the oil-water separator is disposed at both the air inlet 120 and the air outlet 110, wherein the air inlet 120 is connected to a source of air and the air outlet 110 is connected to a test sample. Through oil water separator's setting, harmful impurity such as oil drop, steam in the effective purge gas guarantees the clean cleanness of air current, thereby prevent and avoid having the gas of impurity to get into in the air current passageway harm inner assembly.
Referring to fig. 6, the valve island assembly 40 is connected to the inside of the housing assembly 10, and the valve island assembly 40 has an air flow passage therein, which communicates with the air inlet 120 and the air outlet 110, respectively. The air pressure detecting assembly 50 is connected to the valve island assembly 40, and a detecting terminal of the air pressure detecting assembly 50 is connected in an air flow passage of the valve island assembly 40. The air pressure buffer assembly 60 is connected between the valve island assembly 40 and the air inlet 120, and the air pressure buffer assembly 60 includes a surge tank which is a container having an inside air suitable for buffering the air. The pressure regulating assembly 70 is arranged on the inner side of the shell assembly 10 and is connected in the air flow channel, the air pressure in the air flow channel is regulated by the pressure regulating assembly 70 to be kept at the first air pressure or the second air pressure, the pressure regulating assembly 70 comprises a driving motor, a pressure regulating valve and a speed regulating shifting box, a transmission mechanism is arranged in the speed regulating shifting box, the driving motor is connected with the transmission mechanism arranged in the speed regulating shifting box and is connected with the controller 20, and the transmission mechanism drives the pressure regulating valve to carry out air pressure regulation.
According to the dual air tightness measuring apparatus 100 of the embodiment of the present application, the air pressure detecting assembly 50 can be fixed by arranging the valve island assembly 40, so as to form a stable detecting environment for the air pressure detecting assembly 50, and the pressure regulating assembly 70 can stabilize the air pressure value of the air flow in the product at the first air pressure and the second air pressure according to the command of the controller 20, which is beneficial to detecting the air tightness of the sample under the first air pressure requirement and the air tightness of the sample under the second air pressure requirement, so that the dual air tightness measuring apparatus 100 has stronger universality.
Alternatively, the first air pressure is in the range of 10kpa or less and the second air pressure is in the range of 10kpa to 500 kpa. In general, the first air pressure is suitable for the volume detection range of the object to be detected to be 0L to 380L, and can be used for detecting the air tightness of the new energy battery pack, and the second air pressure is suitable for the volume detection range of the object to be detected to be 0L to 10L, and can be used for testing the air tightness of the battery cooling system such as a water cooling pipe. Compared with the prior art, the dual-pressure air tightness measuring instrument 100 of the embodiment of the application can adopt dual-pressure measurement, breaks through the invariance caused by single-pressure measurement, effectively improves the wildness of products and is beneficial to popularization and application.
Referring to fig. 4, the front case 11 is provided with a window 130, the display touch screen is embedded in the window 130, the display touch screen is attached with a toughened film 210, the front case 11 further includes a panel 113, the panel 113 covers the display touch screen and fixes the display touch screen on the panel 113, an opening is provided on the panel 113, and the opening corresponds to the display touch screen. The display touch screen may interact with the customer, and may select a test mode, a switch state, etc. according to a customer instruction, and may also display a test state, fault information, a test time, etc., so that the dual-pressure air tightness measuring apparatus 100 is more intelligent.
For convenience of operation, a key may be further provided on the panel 113, and the key is connected to the controller 20. The switch signal is transmitted to the controller 20 through the key to turn on and off the power for the instrument, thereby ensuring the normal operation of the instrument.
Referring to fig. 6, the valve island assembly 40 includes an island body 41 and a solenoid valve 42, the solenoid valve 42 is connected to the controller 20, an air flow channel is provided in the island body 41, an air pressure detection assembly 50 is connected in the air flow channel, a fixing position is provided on the island body 41, and the air pressure detection assembly 50 is fixedly connected in the fixing position through a fixing piece.
The air pressure detection assembly 50 includes a pressure sensor coupled to the controller 20. The pressure sensor comprises a sensing head and a body, the sensing head stretches into an air flow channel of the valve island assembly 40, and the body is fixed on a shell of the valve island assembly 40, so that sampling errors of the pressure sensor caused by position deviation are avoided.
Referring to fig. 5, the voltage regulating assembly 70 further includes a bottom plate 71, a protruding portion 711 and an ear portion 712 are disposed on the bottom plate 71, the driving motor and the speed regulating dial case are connected to the protruding portion 711, and the ear portion 712 is disposed at two opposite ends of the protruding portion 711 along the length direction. The bottom plate 71 is provided with the protruding portion 711, so that the structural strength of the bottom plate 71 can be increased, and in addition, the protruding portion 711 can play roles of water resistance, ventilation and heat dissipation, and after the bottom plate 71 is connected with the internal components, the bottom plate 71 is connected with the housing assembly 10.
In the above embodiment, the ear portion 712 may include the first folding tab 721 and the second folding tab 722, the first folding tab 721 is disposed at one end of the bottom plate 71 close to the protruding portion 711, the first folding tab 721 extends along the length direction of the bottom plate 71, the first folding tab 721 is provided with the first mounting hole 720, the second folding tab 722 is disposed at the other end of the bottom plate 71 far away from the protruding portion 711, the second folding tab 722 is disposed at two opposite sides of the bottom plate 71 along the width direction and extends along the width direction of the bottom plate 71, and the second folding tab 722 is provided with the second mounting hole 730. Connecting holes corresponding to the first mounting holes 720 and the second mounting holes 730 are provided at corresponding positions of the housing assembly 10, and the bottom plate 71 may be finally fixed to the housing assembly 10 by fasteners. The arrangement of the first tab 721 and the second tab 722 avoids interference with the mounting position of the housing assembly 10 and internal components such as the driving motor, the speed adjusting dial box, etc., and can facilitate the fixation of the bottom plate 71, save plates, and reduce weight.
Referring to fig. 1, the pressure regulating valve, the surge tank and the valve island assembly 40 are all connected in the air flow channel through hoses, wherein the surge tank and the valve island assembly 40 are all made of metal containers, the surge tank and the valve island assembly 40 are connected through air connectors 80 and hoses, and the air connectors 80 are connected at the air flow inlets and the air flow outlets of the surge tank and the valve island assembly 40. The provision of the air connection 80 is advantageous for ensuring the connection stability between the hose and the pressure regulating valve, surge tank, valve island assembly 40.
Referring to fig. 7, the tracheal joint 80 includes a main body 81 and a connecting portion 82, the main body 81 is rectangular, the connecting portion 82 is hollow and connected to the surface of the main body 81, a vent is provided on the other surface of the main body 81 perpendicular to the surface, the vents are mutually communicated with the connecting portion 82, a gasket position 810 is provided at the periphery of the vent, and the gasket position 810 is recessed into the surface of the main body 81 to form a step for accommodating the gasket. After the gasket position 810 is connected with the gasket, gas leakage can be effectively avoided, and pressure maintaining is facilitated. The gasket position 810 is arranged on the air pipe joint 80, so that the integrity of the gasket after the air pipe joint 80 is repeatedly plugged into and pulled out of the vent can be ensured, and the deformation and abrasion phenomena of the gasket in the bent joint in the prior art are avoided.
In summary, according to the dual air tightness measuring apparatus 100 of the embodiment of the present application, the control assembly, the oil-water separation assembly 30, the valve island assembly 40, the air pressure detection assembly 50, the air pressure buffer assembly 60 and the pressure regulating assembly 70 are all integrated in the housing assembly 10, and the outer housing has a narrow upper part and a wide lower part, which is convenient for installation of various components inside, and also can save space, so that the product has a compact structure and a reduced overall weight. The handle part 14 is arranged at the upper end of the outer shell body, so that the novel energy battery detection device is convenient to carry, flexible transposition can be performed according to the position of a test sample, and the convenience of detecting the novel energy battery can be effectively improved. The air pressure detection assembly 50 can be fixed by arranging the valve island assembly 40, a stable detection environment is formed for the air pressure detection assembly 50, and the pressure regulating assembly 70 can stabilize the air pressure value of the air flow in the product at the first air pressure and the second air pressure according to the command of the controller 20, so that the air tightness of the sample under the first air pressure requirement and the air tightness of the sample under the second air pressure requirement can be detected, and the dual-air tightness measuring instrument 100 has stronger universality.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (10)
1. A dual-pressure air tightness meter, comprising: casing subassembly, control assembly, oil water separating subassembly, valve island subassembly, atmospheric pressure detection component, atmospheric pressure buffer unit and pressure regulating subassembly, its characterized in that:
The shell assembly comprises a front shell, a bottom shell and a rear shell, wherein the front shell and the rear shell are respectively arranged at the front end and the rear end of the bottom shell, the front shell and the rear shell obliquely extend from the bottom shell to the direction close to each other, the front shell, the rear shell and the bottom shell are encircled to form an outer shell with a narrow upper part and a wide lower part, a handle part is arranged at the upper end of the outer shell, a first shell and a second shell are arranged on the front shell, the first shell and the second shell are respectively connected to the left side and the right side of the front shell, and an air inlet and an air outlet are formed in at least one of the first shell and the second shell;
the control assembly is connected to the inner side of the shell assembly and comprises a display touch screen and a controller, the display touch screen is arranged on the front shell, and the display touch screen is connected with the controller;
The oil-water separation component is connected to at least one of the air inlet and the air outlet;
The valve island assembly is connected to the inner side of the shell assembly, an air flow channel is arranged in the valve island assembly, and the air flow channel is respectively communicated with the air inlet and the air outlet;
The air pressure detection component is connected with the valve island component, and a detection terminal of the air pressure detection component is connected in an air flow channel of the valve island component;
The air pressure buffer assembly is connected between the valve island assembly and the air inlet, and comprises a pressure stabilizing tank which is a container with internal air suitable for buffering gas;
The pressure regulating assembly is arranged on the inner side of the shell assembly and is connected in the air flow channel, the pressure regulating assembly regulates the air pressure in the air flow channel to be kept at the first air pressure or the second air pressure, the pressure regulating assembly comprises a driving motor, a pressure regulating valve and a speed regulating shifting box, a transmission mechanism is arranged in the speed regulating shifting box, the driving motor is connected with the transmission mechanism arranged in the speed regulating shifting box and is connected with the controller, and the transmission mechanism drives the pressure regulating valve to carry out air pressure regulating action.
2. The dual air tightness measuring instrument according to claim 1 wherein the first air pressure is in the range of 10kpa or less and the second air pressure is in the range of 10kpa to 500 kpa.
3. The dual air tightness measuring instrument according to claim 1, wherein the front case is provided with a window, the display touch screen is embedded in the window, a tempered film is attached to the display touch screen, the front case further comprises a panel, the panel covers the display touch screen and fixes the display touch screen on the panel, and an opening is provided on the panel, and corresponds to the display touch screen.
4. A dual air tightness measuring instrument according to claim 3 wherein a key is further provided on said panel, said key being connected to said controller.
5. The dual air tightness measuring instrument according to claim 1, wherein the valve island assembly comprises an island body and an electromagnetic valve, the electromagnetic valve is connected with the controller, the air flow channel is arranged in the island body, the air flow channel is internally connected with the air pressure detection assembly, a fixed position is arranged on the island body, and the air pressure detection assembly is fixedly connected with the fixed position through a fixing piece.
6. The dual air tightness meter of claim 1 wherein said air pressure sensing assembly comprises a pressure sensor, said pressure sensor being connected to said controller.
7. The dual air tightness measuring instrument according to claim 1, wherein the pressure regulating assembly further comprises a bottom plate, a protruding portion and an ear portion are arranged on the bottom plate, the driving motor and the speed regulating dial box are connected to the protruding portion, and the ear portion is arranged at two opposite ends of the protruding portion along the length direction.
8. The dual pressure air tightness meter according to claim 7 wherein said ear comprises:
The first folding lugs are arranged at one end, close to the protruding part, of the bottom plate, extend along the length direction of the bottom plate, and are provided with first mounting holes;
The second is folded the ear, the second is folded the ear and is located the bottom plate is kept away from the other end of bellying, the second is folded the ear and is located the bottom plate is along the opposite both sides of width direction and is followed the width direction of bottom plate extends, be equipped with the second mounting hole on the second is folded the ear, wherein, first mounting hole with the second mounting hole is through mutually supporting with the drain pan is in order to fastening connection pressure regulating subassembly.
9. The dual air tightness measuring instrument according to claim 1, wherein the pressure regulating valve, the surge tank and the valve island assembly are all connected into the air flow channel through hoses, wherein the surge tank and the valve island assembly are all metal containers, the surge tank and the valve island assembly are connected with the hoses through air pipe connectors, and the air pipe connectors are connected at the air flow inlets and the air flow outlets of the surge tank and the valve island assembly.
10. The dual air tightness measuring instrument according to claim 9, wherein the air pipe joint comprises a body part and a connecting part, the body part is a cuboid, the connecting part is hollow and connected to the surface of the body part, an air vent is arranged on the other surface of the body part perpendicular to the surface, the air vents are communicated with each other at the connecting part, a gasket position is arranged at the periphery of the air vent, and the gasket position is recessed into the surface of the body part to form a step for accommodating a gasket.
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| CN113465832A (en) | 2021-10-01 |
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