CN112179588A - Prepressing type breather valve test bench - Google Patents
Prepressing type breather valve test bench Download PDFInfo
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- CN112179588A CN112179588A CN202011171018.XA CN202011171018A CN112179588A CN 112179588 A CN112179588 A CN 112179588A CN 202011171018 A CN202011171018 A CN 202011171018A CN 112179588 A CN112179588 A CN 112179588A
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- 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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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Abstract
The invention provides a prepressing type breather valve test bench, relates to the technical field of test equipment, and solves the technical problems of unstable test, inaccurate result and incomplete test function of breather valve test equipment. The prepressing type breather valve test bench comprises a rack, wherein a plurality of test stations are arranged on the rack side by side, and each test station is provided with a positioning component for fixing a breather valve; an expiration testing assembly, an inspiration testing assembly and a pressure measuring assembly are arranged in the frame, and the expiration testing assembly is connected with the breathing valve of each testing station through a first pipeline to provide constant-pressure gas; the inspiration test assembly is connected with the breathing valve of each test station through a second pipeline to provide negative pressure gas with set inspiration flow; the pressure measuring components are arranged on the first pipeline and the second pipeline to test the expiratory pressure and the inspiratory pressure. The invention is used for testing the expiratory pressure and the inspiratory pressure of the breather valve, and has the characteristics of comprehensive detection, high accuracy, convenient operation, time saving and labor saving.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to a prepressing type breather valve test bench.
Background
Most of domestic vehicle hydraulic systems adopt a prepressing type breather valve arranged on an oil tank to adjust the pressure difference between the inside and the outside of the oil tank, so that a certain pressure is ensured in the oil tank, the pump is prevented from pumping empty, when the oil in the oil tank is too high and the pressure is too high, the breather valve needs to be opened to exhaust, and when the oil in the oil tank is too low and the pressure is too low, the breather valve is opened to suck air, so that the pressure in the oil tank is ensured to be constant.
In the prior art, in order to test whether the breather valve can breathe within a set pressure range, the breather valve is usually connected with an air compressor, and the air compressor is used for measuring whether the breather valve can be smoothly opened for breathing; in the prior art, no special equipment is provided for inspiration of a breather valve within a set pressure range and ensuring inspiration flow.
The applicant has found that the prior art has at least the following technical problems:
the test equipment in the prior art adopts the air compressor machine direct air feed, and in air compressor machine start-up process and operation process, the pressure is unstable easily appears, can't keep the constant pressure supply, causes the expiration test result of breather valve inaccurate, does not have professional equipment to carry out the inspiratory capability test of breather valve yet, causes the functional test of breather valve incomplete.
Disclosure of Invention
The invention aims to provide a prepressing type breather valve test bench to solve the technical problems that in the prior art, a breather valve test device is unstable in test, inaccurate in result and incomplete in test function.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a prepressing type breather valve test board which comprises a rack, wherein a plurality of test stations are arranged on the rack side by side, and each test station is provided with a positioning component for fixing a breather valve; an expiration testing assembly, an inspiration testing assembly and a pressure measuring assembly are arranged in the frame, and the expiration testing assembly is connected with the breathing valve of each testing station through a first pipeline to provide constant-pressure gas; the inspiration test assembly is connected with the breathing valve of each test station through a second pipeline to provide negative pressure gas with set inspiration flow; the pressure measuring assembly is arranged on the first pipeline and the second pipeline to test the expiratory pressure and the inspiratory pressure.
As a further improvement of the invention, the number of the test stations is four, and the positioning assemblies comprise a first positioning assembly, a second positioning assembly, a third positioning assembly and a fourth positioning assembly which are sequentially arranged on the four test stations.
As a further improvement of the present invention, the first positioning assembly includes a hollow cylindrical first positioning block, and the second positioning assembly includes a hollow cylindrical second positioning block; the bottom parts of the first positioning block and the second positioning block are respectively provided with a connecting flange connected with the rack, the top part of the first positioning block and the second positioning block is provided with a positioning boss with the specification matched with that of an air inlet and an air outlet of a breather valve, the outer wall of the positioning boss is provided with an external thread section screwed with the air inlet and the air outlet of the breather valve, and the external thread section on the first positioning block is different from the external thread section on the second positioning block in specification; the first pipeline and the second pipeline are connected in parallel on a through hole in the middle of the first positioning block and the second positioning block.
As a further improvement of the present invention, the third positioning assembly includes a hollow cylindrical third positioning cylinder, a third corner cylinder disposed beside the third positioning cylinder, and a third locking piece disposed on the third corner cylinder and located at the top of the third positioning cylinder, the top of the third positioning cylinder is provided with a positioning ring platform, and the outer diameter of the positioning ring platform is equivalent to the inner diameter of the air inlet and the air outlet of the breather valve; the fourth positioning assembly comprises a hollow cylindrical fourth positioning cylinder, a fourth corner cylinder arranged beside the fourth positioning cylinder and a fourth locking piece arranged on the fourth corner cylinder and positioned at the top of the fourth positioning cylinder; and a positioning sinking platform is arranged at the top of the fourth positioning cylinder, and the outer diameter of the positioning sinking platform is equivalent to that of a flange at the air inlet and outlet of the breather valve.
As a further improvement of the invention, the third corner cylinder and the fourth corner cylinder are connected in parallel and communicated with a gas-water separator on the outlet side of the gas source through a third pipeline, and the third pipeline is provided with a pressure reducing valve to adjust the jacking force of the cylinders; and flow rate regulating valves are further arranged on the third corner cylinder and the fourth corner cylinder so as to regulate the stretching speed of the cylinders.
As a further improvement of the invention, the third locking piece and the fourth locking piece are both rod-shaped structures, and the tail ends of the third locking piece and the fourth locking piece are provided with C-shaped clamping locking parts.
As a further improvement of the invention, the breath test assembly comprises an air storage tank, a constant pressure valve, a pressure transmitter, a first pressure gauge, a main control valve, a breath station electromagnetic valve and an exhaust valve, wherein the air storage tank is connected with a gas-water separator on the outlet side of an air source through a fourth pipeline, and the constant pressure valve is arranged on the fourth pipeline; the first pressure gauge is arranged on the gas storage tank, and the main control valve, the pressure transmitter and the exhaust valve are sequentially arranged on the first pipeline; the air suction testing assembly comprises a vacuum pump, an air flow regulating valve, an air flow meter and an air suction station electromagnetic valve which are sequentially connected with the second pipeline; the opening states of the air suction station electromagnetic valve and the breathing station battery valve are opposite.
As a further improvement of the present invention, the pressure measuring assembly installed on the first pipeline is located between the main control valve and the exhalation station electromagnetic valve, and comprises a second mechanical pressure gauge and a third electronic pressure gauge; and the pressure measuring assembly arranged on the second pipeline is positioned between the air flow meter and the suction station electromagnetic valve and comprises a fourth mechanical negative pressure meter and a fifth electronic negative pressure meter.
As a further improvement of the invention, the pre-pressing type breather valve test bench further comprises a control system, a data transmission system, an alarm system and a printer which are arranged on the rack, and the expiration test assembly, the positioning assembly, the inspiration test assembly, the pressure measurement assembly, the data transmission system, the printer and the alarm system are all electrically connected with the control system.
As a further improvement of the invention, the rack comprises a cabinet body and an operation wall, wherein the front side and the rear side of the cabinet body are respectively provided with a cabinet door capable of being opened and closed, the test station is arranged at the top of the cabinet body, the expiration test assembly and the inspiration test assembly are arranged in the cabinet body, and the positioning assembly is arranged at the top of the cabinet body; the operation wall is vertically arranged at the top of the cabinet body, and the control system, the data transmission system, the alarm system, the printer and the pressure measuring assembly are arranged on the operation wall.
Compared with the prior art, the invention has the following beneficial effects:
the prepressing type breather valve test board provided by the invention can be used for carrying out expiration and inspiration pressure tests on a breather valve, can be used for carrying out all-around detection on the breather valve, can provide stable test constant pressure through an expiration test component, has accurate test results, and can ensure that qualified breather valves leave factories; by arranging a plurality of testing stations, and arranging locking pieces with different structures and specifications on each testing station, the stable testing process in the testing process of the breather valve can be ensured, and the movement in the pressurizing test is avoided; the pressure measuring assembly is set into a mechanical meter and an electronic meter so as to avoid test result errors caused by problems of any meter, and the double meters are set so as to ensure test accuracy; the data transmission system, the alarm system and the printer are arranged on the rack, so that test data can be transmitted to a far end in time, a test result can be known in time, and the test data can be stored through the data transmission system for later use; through setting up alarm system, can voice broadcast product qualified or unqualified when the test, make things convenient for the tester to know the test condition, need not to stare all the time in front of the screen, through setting up the printer, can print test data on the spot, have convenient operation, labour saving and time saving's characteristics, four breather valves of disposable detectable, it is efficient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a first three-dimensional structure of a pre-stressed breather valve test bench of the present invention with a breather valve installed thereon;
FIG. 2 is a schematic diagram of a second three-dimensional structure of the pre-pressurized breather valve test bench of the present invention with a breather valve installed thereon;
FIG. 3 is a first schematic view of a three-dimensional structure of the pre-stressed breather valve testing platform with the breather valve removed;
FIG. 4 is a schematic view of a second three-dimensional structure of the pre-pressurized breather valve testing table with the breather valve removed;
FIG. 5 is a schematic view of a portion of the pre-stressed breather valve testing station with the positioning assembly removed;
FIG. 6 is a logical wiring diagram of the pre-pressurized breather valve test station of the present invention.
In the figure 1, a frame; 11. a printer; 12. a cabinet body; 13. an operation wall; 14. a cabinet door; 2. a positioning assembly; 21. a first positioning assembly; 211. positioning the boss; 212. an external threaded section; 22. a second positioning assembly; 23. a third positioning assembly; 231. a third positioning cylinder; 232. a third corner cylinder; 233. positioning the ring table; 24. a fourth positioning assembly; 241. positioning the sinking platform; 3. an breath test assembly; 31. a gas storage tank; 32. a constant pressure valve; 33. a pressure transmitter; 34. a first pressure gauge; 35. a master control valve; 36. an expiratory station electromagnetic valve; 37. an exhaust valve; 4. an inspiratory test component; 41. a vacuum pump; 42. an air flow regulating valve; 43. an air flow meter; 44. an air suction station electromagnetic valve; 5. a pressure measuring assembly; 51. a second mechanical pressure gauge; 52. a third electronic pressure gauge; 53. a fourth mechanical negative pressure gauge; 54. a fifth electronic negative pressure gauge; 6. a first pipeline; 7. a second pipeline; 8. a third pipeline; 9. a gas-water separator; 10. a pressure reducing valve; 100. a breather valve; 101. a flow rate regulating valve; 102. a fourth pipeline; 103. a station reversing valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
As shown in fig. 1 and fig. 2, the invention provides a prepressing type breather valve test bench, which is suitable for production test of various micro-pressure respirators, and comprises a rack 1, wherein a plurality of test stations are arranged on the rack 1 side by side, and each test station is provided with a positioning assembly 2 for fixing a breather valve 100; an expiration testing component 3, an inspiration testing component 4 and a pressure measuring component 5 are arranged in the frame 1, and the expiration testing component 3 is connected with a breather valve 100 of each testing station through a first pipeline 6 so as to provide constant-pressure gas; the inspiration test component 4 is connected with the breather valve 100 of each test station through a second pipeline 7 to provide negative pressure gas with set inspiration flow; the pressure measuring modules 5 are arranged on a first 6 and a second 7 pipeline to test the expiratory pressure and the inspiratory pressure, respectively.
Specifically, when the exhalation test of the breather valve 100 is performed, the exhalation test component 3 provides a constant high pressure, the constant high pressure is higher than the exhalation pressure when the breather valve 100 works, after a high-pressure gas is delivered to the breather valve 100, the main control valve in the exhalation test component 3 is closed 35, so that the supply of the high-pressure gas is stopped, the first pipeline 6 between the main control valve 35 and the breather valve 100 is in a closed state, and the pressure is continuously maintained for a certain time, if the breather valve 100 leaks, the pressure in the first pipeline 6 is continuously reduced, and when the pressure is reduced to a range exceeding a differential pressure set by a system, the breather valve 100 is indicated to be leaked, the sealing is not good, and the breather valve is a defective product, and the alarm system gives an audible alarm; when the pressure is continuously maintained for a certain time, and the pressure value measured by the pressure measuring component 5 on the first pipeline 6 is always within the allowable pressure difference range set by the system, the alarm system gives out sound alarm to prompt qualified products.
As shown in fig. 3 and 4, as an alternative embodiment of the present invention, the number of the test stations is four, and the positioning assembly 2 includes a first positioning assembly 21, a second positioning assembly 22, a third positioning assembly 23 and a fourth positioning assembly 24, which are sequentially disposed on the four test stations. The positioning assembly 2 is used for fixing and limiting the breather valve 100 placed on a test station.
As shown in fig. 5, further, the first positioning assembly 21 includes a hollow cylindrical first positioning block, and the second positioning assembly 22 includes a hollow cylindrical second positioning block; the bottom parts of the first positioning block and the second positioning block are both provided with connecting flanges connected with the frame 1, the top parts of the first positioning block and the second positioning block are provided with positioning bosses 211 with specifications matched with those of air inlets and air outlets of the breather valve 100, the outer walls of the positioning bosses 211 are provided with external thread sections 212 screwed with the air inlets and the air outlets of the breather valve 100, and the external thread sections 212 on the first positioning block and the external thread sections 212 on the second positioning block are different in specification; the first pipeline 6 and the second pipeline 7 are connected in parallel on the through hole between the first positioning block and the second positioning block. Specifically, the first pipeline 6 and the second pipeline 7 respectively comprise branch pipelines with the same number as the positioning assemblies 2, each test station is connected with the branch pipelines of one set of the first pipeline 6 and the second pipeline 7 in parallel, the first pipeline 6 is used for testing the exhalation performance of the breather valve 100, and the second pipeline 7 is used for testing the inhalation performance of the breather valve 100.
As shown in fig. 5, further, the third positioning assembly 23 includes a hollow cylindrical third positioning cylinder 231, a third corner cylinder 232 disposed beside the third positioning cylinder 231, and a third locking member disposed on the third corner cylinder 232 and located at the top of the third positioning cylinder 231, a positioning ring platform 233 is disposed at the top of the third positioning cylinder 231, and the outer diameter of the positioning ring platform 233 corresponds to the inner diameter of the inlet and outlet of the breathing valve 100; the fourth positioning assembly 24 comprises a hollow cylindrical fourth positioning cylinder, a fourth corner cylinder arranged beside the fourth positioning cylinder and a fourth locking piece arranged on the fourth corner cylinder and positioned at the top of the fourth positioning cylinder; the top of the fourth positioning cylinder is provided with a positioning sinking platform 241, and the outer diameter of the positioning sinking platform 241 is equivalent to the outer diameter of the flange at the air inlet and outlet of the breather valve 100. It should be noted that, in an alternative embodiment of the present invention, the third corner cylinder 232 and the fourth corner cylinder are both 90-degree corner cylinders;
the third corner cylinder 232 and the fourth corner cylinder are arranged in parallel and are communicated with a gas-water separator 9 on the outlet side of the gas source through a third pipeline 8, and a pressure reducing valve 10 is arranged on the third pipeline 8 so as to adjust the jacking force of the cylinders; the third corner cylinder 232 and the fourth corner cylinder are also provided with a flow rate regulating valve 101 to regulate the expansion and contraction speed of the cylinders.
As shown in fig. 3, 4 and 5, in particular, the third locking member and the fourth locking member are both rod-shaped structures, and the ends thereof are provided with C-shaped latching portions, and when the breathing valve 100 is mounted on the positioning assembly 2, the latching portions just snap into threaded rods for mounting the valve cover on the top of the breathing valve 100. The latching portion is used for performing limit locking on the breather valve 100 in the height direction.
As shown in fig. 6, as an alternative embodiment of the present invention, the breath test assembly 3 includes an air storage tank 31, a constant pressure valve 32, a pressure transmitter 33, a first pressure gauge 34, a main control valve 35, an exhalation station electromagnetic valve 36 and an exhaust valve 37, the air storage tank is connected to the gas-water separator 9 on the outlet side of the air source through a fourth pipeline 102, and the constant pressure valve 32 is disposed on the fourth pipeline 102; the first pressure gauge 34 is arranged on the gas storage tank 31, and the main control valve 35, the pressure transmitter 33 and the exhaust valve 37 are sequentially arranged on the first pipeline 6; when the device is used, high-pressure gas provided by a gas source is subjected to gas-water separation through the gas-water separator 9 and then enters the gas storage tank 31 through the constant pressure valve 32, after the pressure in the gas storage tank 31 reaches the pressure required by the test of the breather valve 100, the constant pressure valve 32 is closed to stop charging, the breather valve 100 is installed, the exhalation station electromagnetic valve 36 is opened, the inhalation station electromagnetic valve 44 is closed, the main control valve 35 is opened, the high-pressure gas in the gas storage tank 31 enters the breather valve 100 through the main control valve 35 and the exhalation station electromagnetic valve 36, after the gas reaches the breather valve 100, the main control valve 35 is closed, at the moment, a closed section is positioned between the breather valve 100 and the main control valve 35 in the first pipeline 6, pressure maintaining test with set time is carried out, and when the pressure value measured by the pressure measuring assembly 5 on the first pipeline 6 is within an allowable; when the pressure value measured by the pressure measuring component 6 on the first pipeline 6 exceeds the allowable pressure difference range, the respiratory valve 100 is not well sealed, the leakage problem exists, and the exhalation is abnormal; after the test is finished, the vent valve 37 is opened to release the pressurized gas in the first pipeline and the breather valve 100.
Further, the inspiration test assembly 4 comprises a vacuum pump 41, an air flow regulating valve 42, an air flow meter 43 and an inspiration station electromagnetic valve 44 which are sequentially connected with the second pipeline 7; the inspiratory position solenoid valve 44 and the respiratory position battery valve 36 are opened in opposite directions. When the exhalation station electromagnetic valve 44 is opened and the inhalation station electromagnetic valve 44 is closed, carrying out an exhalation test of the breather valve 100; when the expiratory position solenoid valve 44 is closed and the inspiratory position solenoid valve 44 is open, an inspiratory test of the breather valve 100 is performed.
As an alternative embodiment of the present invention, the pressure measuring assembly 5 installed on the first pipeline 6 is located between the main control valve 35 and the exhalation station solenoid valve 36, and includes a second mechanical pressure gauge 51 and a third electronic pressure gauge 52; the load cell assembly 5 mounted on the second conduit 7 is located between the air flow meter 43 and the suction station solenoid valve 44 and includes a fourth mechanical negative pressure gauge 53 and a fifth electronic negative pressure gauge 54.
The prepressing type breather valve test bench further comprises a control system, a data transmission system, an alarm system and a printer 11 which are arranged on the rack 1, wherein the printer 11 is a micro printer, and the data transmission system, the alarm system and the control system are all realized by adopting products in the prior art; furthermore, the control system is realized by programming a PLC control module; expiration test assembly 3, locating component 2, inspiration test assembly 4, pressure measurement assembly 5, data transmission system, printer 11 and alarm system all with control system electric connection.
Specifically, the rack 1 comprises a cabinet body 12 and an operation wall 13, the front side and the rear side of the cabinet body 12 are both provided with openable cabinet doors 14, the test station is arranged at the top of the cabinet body 12, the expiration test assembly 3 and the inspiration test assembly 4 are arranged in the cabinet body 12, and the positioning assembly 2 is arranged at the top of the cabinet body 12; an operation wall 13 is vertically arranged at the top of the cabinet body 12, and the control system, the data transmission system, the alarm system, the printer 11 and the pressure measuring assembly 5 are arranged on the operation wall 13.
Working principle and control flow:
the work station reversing valve 103 can be used for switching according to the position of a test product so as to enable the corner cylinder of the corresponding work station to work; when the pressure of the constant-pressure air storage tank 31 reaches the upper limit, a constant-pressure electromagnetic gate valve (a constant-pressure valve 32) is closed, the lower limit is opened, and the pressure rises by 10% within a range of 50-500 kpa (according to the requirement of a product exhalation value); manually screwing or pressing the breather valve 100 by an air cylinder on a test station, starting the main control valve 35, adjusting the breather valve 100 to a required value, and starting pressure maintaining timing by pressing a timing key; within the set time, when the lower limit is lower than the set lower limit, the voice prompt is unqualified until the manual reset voice prompt is finished; in the set time, if the time is not lower than the set lower limit, the voice prompts that the patient is qualified to start inhaling (at the moment, the background of the expiration test result is recorded); within the set negative pressure value and the flow value which is more than or equal to the set negative pressure value, the voice prompts that the product qualification detection is finished; the functions can be independently operated in a manual state;
the control system on the rack 1 comprises a 10-inch touch screen, intelligent operation can be performed, the display is divided into three interfaces of automatic, manual and parameter, the counting function is realized, the number of qualified products, the number of unqualified products, the accumulated detection number and zero clearing can be realized; the name input function of the experimental product is provided; the control system has a local data storage function, and the data can be stored for more than 3 months and can be copied by a U disk; the test bed can support interconnection networking through a data transmission system, and can realize the function of Internet of things; the test bed is provided with a printer 11, and batch inspection reports can be printed;
the prepressing type breather valve test board provided by the invention can be used for carrying out expiration and inspiration pressure tests on a breather valve, can be used for carrying out all-around detection on the breather valve, can provide stable test constant pressure through an expiration test component, has accurate test results, and can ensure that qualified breather valves leave factories; by arranging a plurality of testing stations, and arranging locking pieces with different structures and specifications on each testing station, the stable testing process in the testing process of the breather valve can be ensured, and the movement in the pressurizing test is avoided; the pressure measuring assembly is set into a mechanical meter and an electronic meter so as to avoid test result errors caused by problems of any meter, and the double meters are set so as to ensure test accuracy; the data transmission system, the alarm system and the printer are arranged on the rack, so that test data can be transmitted to a far end in time, a test result can be known in time, and the test data can be stored through the data transmission system for later use; through setting up alarm system, can voice broadcast product qualified or unqualified when the test, make things convenient for the tester to know the test condition, need not to stare all the time in front of the screen, through setting up the printer, can print test data on the spot.
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
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 fig. 1 to facilitate the description of the invention and to simplify the description, but 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 as limiting the invention.
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.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The pre-pressing type breather valve test bench is characterized by comprising a rack, wherein a plurality of test stations are arranged on the rack side by side, and each test station is provided with a positioning component for fixing a breather valve; an expiration testing assembly, an inspiration testing assembly and a pressure measuring assembly are arranged in the frame, and the expiration testing assembly is connected with the breathing valve of each testing station through a first pipeline to provide constant-pressure gas; the inspiration test assembly is connected with the breathing valve of each test station through a second pipeline to provide negative pressure gas with set inspiration flow; the pressure measuring assembly is arranged on the first pipeline and the second pipeline to test the expiratory pressure and the inspiratory pressure.
2. The testing platform for the pre-stressed breather valve according to claim 1, wherein the number of the testing stations is four, and the positioning assemblies comprise a first positioning assembly, a second positioning assembly, a third positioning assembly and a fourth positioning assembly which are sequentially arranged on the four testing stations.
3. The pre-stressed breather valve test stand of claim 2, wherein the first positioning assembly comprises a hollow cylindrical first locating block and the second positioning assembly comprises a hollow cylindrical second locating block; the bottom parts of the first positioning block and the second positioning block are respectively provided with a connecting flange connected with the rack, the top part of the first positioning block and the second positioning block is provided with a positioning boss with the specification matched with that of an air inlet and an air outlet of a breather valve, the outer wall of the positioning boss is provided with an external thread section screwed with the air inlet and the air outlet of the breather valve, and the external thread section on the first positioning block is different from the external thread section on the second positioning block in specification; the first pipeline and the second pipeline are connected in parallel on a through hole in the middle of the first positioning block and the second positioning block.
4. The pre-stressed breather valve test bench according to claim 2, wherein the third positioning assembly comprises a hollow cylindrical third positioning cylinder, a third corner cylinder arranged beside the third positioning cylinder, and a third locking piece arranged on the third corner cylinder and positioned at the top of the third positioning cylinder, wherein a positioning ring table is arranged at the top of the third positioning cylinder, and the outer diameter of the positioning ring table is equivalent to the inner diameter of an air inlet and an air outlet of the breather valve; the fourth positioning assembly comprises a hollow cylindrical fourth positioning cylinder, a fourth corner cylinder arranged beside the fourth positioning cylinder and a fourth locking piece arranged on the fourth corner cylinder and positioned at the top of the fourth positioning cylinder; and a positioning sinking platform is arranged at the top of the fourth positioning cylinder, and the outer diameter of the positioning sinking platform is equivalent to that of a flange at the air inlet and outlet of the breather valve.
5. The testing platform for pre-stressed breather valves according to claim 4, wherein the third corner cylinder and the fourth corner cylinder are connected in parallel and communicated with a gas-water separator on the outlet side of an air source through a third pipeline, and a pressure reducing valve is arranged on the third pipeline to adjust the jacking force of the cylinders; and flow rate regulating valves are further arranged on the third corner cylinder and the fourth corner cylinder so as to regulate the stretching speed of the cylinders.
6. The testing bench for pre-stressed breather valve according to claim 4, wherein the third locking piece and the fourth locking piece are both rod-shaped structures, and the tail ends of the third locking piece and the fourth locking piece are provided with C-shaped locking parts.
7. The pre-stressed breather valve test bench according to claim 1, wherein the breath test assembly comprises an air storage tank, a constant pressure valve, a pressure transmitter, a first pressure gauge, a main control valve, a breath station electromagnetic valve and an exhaust valve, the air storage tank is connected with a gas-water separator on the outlet side of an air source through a fourth pipeline, and the constant pressure valve is arranged on the fourth pipeline; the first pressure gauge is arranged on the gas storage tank, and the main control valve, the pressure transmitter and the exhaust valve are sequentially arranged on the first pipeline; the air suction testing assembly comprises a vacuum pump, an air flow regulating valve, an air flow meter and an air suction station electromagnetic valve which are sequentially connected with the second pipeline; the opening states of the air suction station electromagnetic valve and the breathing station battery valve are opposite.
8. The pre-stressed breather valve test bench of claim 7, wherein the pressure measurement assembly mounted on the first pipeline is located between the main control valve and the expiratory station solenoid valve, and comprises a second mechanical pressure gauge and a third electronic pressure gauge; and the pressure measuring assembly arranged on the second pipeline is positioned between the air flow meter and the suction station electromagnetic valve and comprises a fourth mechanical negative pressure meter and a fifth electronic negative pressure meter.
9. The pre-stressed breather valve test bench of claim 1, further comprising a control system, a data transmission system, an alarm system, and a printer, all disposed on the frame, wherein the breath test assembly, the positioning assembly, the inspiration test assembly, the pressure measurement assembly, the data transmission system, the printer, and the alarm system are electrically connected to the control system.
10. The pre-stressed breather valve test bench according to claim 9, wherein the rack comprises a cabinet body and an operation wall, wherein openable and closable cabinet doors are arranged on the front side and the rear side of the cabinet body, the test station is arranged at the top of the cabinet body, the breath test assembly and the inspiration test assembly are arranged in the cabinet body, and the positioning assembly is arranged at the top of the cabinet body; the operation wall is vertically arranged at the top of the cabinet body, and the control system, the data transmission system, the alarm system, the printer and the pressure measuring assembly are arranged on the operation wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011171018.XA CN112179588A (en) | 2020-10-28 | 2020-10-28 | Prepressing type breather valve test bench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011171018.XA CN112179588A (en) | 2020-10-28 | 2020-10-28 | Prepressing type breather valve test bench |
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| Publication Number | Publication Date |
|---|---|
| CN112179588A true CN112179588A (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011171018.XA Pending CN112179588A (en) | 2020-10-28 | 2020-10-28 | Prepressing type breather valve test bench |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076676A (en) * | 2021-11-02 | 2022-02-22 | 南京市锅炉压力容器检验研究院 | Integrated calibration platform and method for liquid tank breather valve and emergency relief device |
-
2020
- 2020-10-28 CN CN202011171018.XA patent/CN112179588A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076676A (en) * | 2021-11-02 | 2022-02-22 | 南京市锅炉压力容器检验研究院 | Integrated calibration platform and method for liquid tank breather valve and emergency relief device |
| CN114076676B (en) * | 2021-11-02 | 2024-01-05 | 南京市锅炉压力容器检验研究院 | Integrated verification platform and method for breather valve and emergency release device of liquid tank |
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