CN113639833A - Liquid level transmitter testing device and method based on pneumatic control - Google Patents
Liquid level transmitter testing device and method based on pneumatic control Download PDFInfo
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- CN113639833A CN113639833A CN202110932807.9A CN202110932807A CN113639833A CN 113639833 A CN113639833 A CN 113639833A CN 202110932807 A CN202110932807 A CN 202110932807A CN 113639833 A CN113639833 A CN 113639833A
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Abstract
A liquid level transmitter testing device and a testing method based on pneumatic control are disclosed, wherein the testing device comprises a pressurizing main body mechanism, a first protection mechanism, a second protection mechanism and a pneumatic control mechanism, the pressurizing main body mechanism comprises a gas circuit bottom plate and a plurality of testing single paths, two mutually independent gas circuit channels are arranged on the gas circuit bottom plate, and a first gas circuit is used for transmitting a clamping gas source to each testing single path to realize holding of a product; the second gas circuit is used for transmitting a test gas source to a tested product to realize the test of the product; a plurality of sealing hole sites are arranged on the air path bottom plate in an array manner, and two mutually independent air path channels are communicated with the test single path through the sealing hole sites; the testing single path comprises a cylinder body and a piston hermetically arranged in the cylinder body; the first protection mechanism is used for axial limiting protection of the detected semi-finished product; the second protection mechanism is used for axial limiting protection of a detected finished product; the pneumatic control mechanism controls the on-off of the air source. The invention has the advantages of convenient and fast operation, time and labor saving, safety and reliability.
Description
Technical Field
The invention belongs to the field of liquid level transmitter testing, and particularly relates to a liquid level transmitter testing device and a liquid level transmitter testing method based on pneumatic control, which can improve the product testing efficiency and solve the problem of insufficient manufacturing capacity of a liquid level transmitter.
Background
With the increasing demand of industries such as petroleum, chemical industry, electric power, hydrology, geology and the like for the quantity of the liquid level transmitters, the production capacity of the liquid level transmitter manufacturing industry is urgently required to be rapidly improved. However, the fundamental limitation on the improvement of the productivity lies in the efficiency of product testing. The key point of improving the testing efficiency is to provide a novel testing device for the liquid level transmitter, which breaks the conventional liquid level transmitter.
In the prior art, an adjustable wrench is used for pressing a cap to extrude an O-shaped sealing ring to deform through manually screwing a thread, the outer circle of a product placed in a tool is clamped tightly by the deformed O-shaped sealing ring, and the tested product is subjected to a pressurization test after the clamping. And after each batch of products are tested, reversely loosening the thread pressing cap by using the adjustable wrench, and taking out the tested products from the tool to finish the single batch of tests.
The drawbacks and deficiencies of the prior art testing techniques include: (1) the operation process is manual operation, and locking torque is difficult to control, and during the batch test, operation intensity is big, wastes time and energy, and is inefficiency, complex operation, can't satisfy mass production and manufacturing. According to experimental statistics, the existing test tool takes 20 tests in each batch as an example, and the test loading and unloading time needs 15min to 20 min. According to the calculation, 10 batches of products are tested every day, and the loading and unloading time only needs 150 min-200 min. (2) In the test process, if the finished product test and the semi-finished product test need to be switched, the test pressing cap needs to be replaced, and the test pressing cap is time-consuming, labor-consuming and low in efficiency when being carried out in batches. (3) In the prior art, the tool is complex in structure and poor in reliability. The abrasion resistance of the sealing ring is poor, and the loss is large. The tested product is not protected after being clamped, and when the test pressurization is too large, the product is easy to fly out of the tool, so that great potential safety hazards exist.
Disclosure of Invention
The invention aims to solve the problems of complicated test operation, low loading and unloading efficiency, poor reliability and the like commonly existing in the liquid level transmitter manufacturing industry in the prior art, and provides a liquid level transmitter test device and a test method based on pneumatic control, which have the advantages of convenience and rapidness in operation, time and labor saving, safety and reliability, and capability of ensuring the smooth operation of product test.
In order to achieve the purpose, the invention has the following technical scheme:
a liquid level transmitter testing device based on pneumatic control comprises a pressurizing main body mechanism, a first protection mechanism, a second protection mechanism and a pneumatic control mechanism, wherein the pressurizing main body mechanism comprises a gas path bottom plate and a plurality of same testing single paths, two mutually independent gas path channels are arranged on the gas path bottom plate, and a first gas path is used for transmitting a clamping gas source to each testing single path to realize holding of a product; the second gas circuit is used for transmitting a test gas source to a tested product to realize the test of the product; a plurality of sealing hole sites are arranged on the air path bottom plate in an array manner, and two mutually independent air path channels are communicated with the test single path through the sealing hole sites; the testing single path comprises a cylinder body and a piston hermetically arranged in the cylinder body; the first protection mechanism is used for carrying out axial limiting protection on the measured semi-finished product; the second protection mechanism is used for carrying out axial limiting protection on a measured finished product; the pneumatic control mechanism is used for controlling the on-off of the air source.
As a preferred scheme of the liquid level transmitter testing device, the bottom surface of the gas circuit bottom plate is provided with the ground feet, and the whole testing device is leveled and fixed through the ground feet.
As a preferable scheme of the liquid level transmitter testing device, the outer surface of the piston is provided with a sealing ring, and the surface of the sealing ring is coated with lubricating sealing grease so that the piston can flexibly slide up and down in the cylinder body.
As a preferred scheme of the liquid level transmitter testing device, the piston is of a hollow structure, the outer surface of the piston is of a stepped reducing structure, a second sealing ring is arranged on the outer surface of the piston with the larger outer diameter, and a third sealing ring is arranged on the outer surface of the piston with the smaller outer diameter; the first air passage and the second air passage are separated by the piston, and when the clamping air source enters air through the first air passage, the piston slides upwards in the cylinder body.
As a preferred scheme of the liquid level transmitter testing device, the first protection mechanism comprises a first sealing ring, a knob switch, a pressing cap, an end cover and a special-shaped stop block, wherein the first sealing ring, the knob switch, the pressing cap, the end cover and the special-shaped stop block can be sleeved on a detected semi-finished product; under the action of the pressing cap, the special-shaped stop block is limited in the eccentric guide rail on the upper end face of the end cover; when the knob switch is rotated, the special-shaped stop block can move radially, so that the axial limit of the detected semi-finished product is realized.
As a preferred scheme of the liquid level transmitter testing device, the second protection mechanism comprises an upright post, a locknut, a check washer, a protection cover plate and a bolt, wherein a plurality of limiting grooves are processed on the excircle of the upright post, the upright post is fixed on the gas path bottom plate through the locknut and the check washer, and the direction of the limiting grooves is opposite to the tongue of a knob switch of the second protection mechanism; the protective cover plate is provided with a plurality of openings, the size of the openings is equivalent to that of the neck of a measured finished product, when protection is needed, the second protective mechanism is sleeved on the stand column according to hole position relation and pressed at the neck of the measured finished product, and then the knob switch of the second protective mechanism is rotated to enable the tongue of the second protective mechanism to extend out and be clamped in the limiting groove of the stand column, so that protection of the measured finished product is realized.
As a preferred scheme of the liquid level transmitter testing device, the pneumatic control mechanism comprises a pneumatic switch, a gas circuit adapter, a pneumatic quick connector, a gas pipe and an oil-water separator, wherein the oil-water separator is used for introducing the gas pipe into a compressed gas source of the testing device for purification so as to filter oil mist molecules and water vapor molecules in the gas pipe; the pneumatic switch is installed on the trachea, and pneumatic quick-operation joint installs on the gas circuit adapter, connects the test air supply of pressure gauge control to the testing arrangement in through the gas circuit adapter.
As a preferred scheme of the liquid level transmitter testing device, the oil-water separator is provided with a pressure regulating valve and a pointer pressure gauge.
The invention also provides a testing method of the liquid level transmitter testing device based on pneumatic control, which comprises the following steps:
when the semi-finished products are tested, firstly, a batch of tested semi-finished products are loaded into each testing single path of the testing device, a first air path is opened to transmit a clamping air source to each testing single path, so that the tested semi-finished products are held tightly, and then a first protection mechanism is opened to perform axial limiting protection on the tested semi-finished products; when the finished products are tested, a batch of tested finished products are firstly loaded into each testing single path of the testing device, and then the second protection mechanism is opened to carry out axial limiting protection on the tested finished products;
and conveying a test air source to the tested product through the second air path, and after controlling the test air source to be stable, starting to acquire data of different pressure points on the tested product by the data acquisition unit to realize the test of the product.
As a preferred scheme of the testing method, after the testing is finished, atmosphere is introduced to enable a testing gas source to be zero, the first protection mechanism is closed, and the semi-finished products to be tested are taken out one by one to finish the single-batch testing.
Compared with the prior art, the invention has at least the following beneficial effects:
two mutually independent gas circuit channels are arranged on the gas circuit bottom plate, and the first gas circuit is used for transmitting a clamping gas source to each test single circuit, so that the product is held tightly; the second gas circuit is used for transmitting a test gas source to a tested product, so that the product is tested. The simple principle in the gas circuit control is applied to the liquid level transmitter testing device, the product is easily clamped and loosened through a key button, the manual wrench screwing operation mode is successfully replaced, and time and labor are saved. The first protection mechanism and the second protection mechanism can respectively realize the safety protection of the semi-finished product test and the finished product test. The invention adopts the basic principle of F ═ P × S in physics to calculate, namely the key dimensions such as the cylinder diameter, the stroke and the like of the testing device can be determined, wherein F in a formula is force, and the unit is N; "P" is pressure, in units of "MPa"; s is the stress area in mm2". The liquid level transmitter testing device has the advantages of compact and ingenious structural design, low cost, long service life and large single-batch testing quantity, and is suitable for batch application of production lines.
Furthermore, the inner wall of the end cover of the first protection mechanism is provided with a groove and a first sealing ring is placed in the groove, the deformation of the sealing elastic body is adopted, and the deformation of the sealing elastic body is controlled by a compressed air source, so that the clamping and the loosening of a tested product are realized.
Drawings
FIG. 1 is a schematic diagram of a front view structure of a liquid level transmitter testing device based on pneumatic control according to the present invention;
FIG. 2 is a schematic diagram of a top view of the pneumatic control-based level transmitter testing apparatus of the present invention;
FIG. 3 is a schematic diagram of a side view of the pneumatic control-based level transmitter testing apparatus of the present invention;
FIG. 4 is a schematic cross-sectional view of a first protection mechanism according to the present invention;
FIG. 5 is a schematic view of the operating principle of the rotary switch of the first protection mechanism according to the present invention;
FIG. 6 is a schematic front view of a second shielding mechanism of the present invention;
FIG. 7 is a schematic top view of a second shielding mechanism of the present invention;
in the drawings: 1-a cylinder body; 2-upright post; 3-a semi-finished product to be detected; 4-a piston; 5-a first sealing ring; 6-ground feet; 7-locknut; 8-anti-loose gaskets; 9-a second sealing ring; 10-a third seal ring; 11-a docking mechanism; 12-gas circuit bottom plate; 13-sealing the plug; 14-a pneumatic switch; 15-gas path adapter; 16-pneumatic quick coupling; 17-the trachea; 18-a knob switch; 19-pressing the cap; 20-end cap; 21-a special-shaped stop block; 22-a protective cover plate; 23-bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. It should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present application fall into the protection scope of the present invention.
The invention relates to a liquid level transmitter testing device based on pneumatic control, which comprises a pressurizing main body mechanism, a first protection mechanism, a second protection mechanism and a pneumatic control mechanism. The main pressurizing mechanism is formed by cascading 20 identical testing single paths on one air path bottom plate 12, as shown in fig. 1 and 2, two mutually independent air path channels are processed on the air path bottom plate 12, and two mutually independent air path channels, namely a first air path and a second air path, are also arranged in each testing single path. The first air path is responsible for transmitting a clamping air source to each test single path to clamp the product; and the second gas circuit transmits the test gas source to the tested product to realize the test of the product. Referring to fig. 3, the test unit is composed of a cylinder 1, a piston 4, an end cover 20, a second seal ring 9, a third seal ring 10 and a first protection mechanism. The second sealing ring 9 is sleeved in the sealing groove of the largest excircle of the piston 4, and the third sealing ring 10 is sleeved in the sealing groove of the smallest excircle of the piston 4. The purpose of the second and third seal rings 9, 10 is to block the first and second gas paths so that they are independent of each other. The surfaces of the sealing rings are coated with sealing grease, and the piston 4 is of a hollow structure and can slide up and down in the cylinder body 1. Referring to fig. 4, the piston 4 is communicated with the first air passage, when the first air passage is filled with air, the piston 4 pushes against the first sealing ring 5 in the cylinder 1 to start to slide upwards, the first sealing ring 5 is arranged in an inner cavity of the end cover 20 and limited by the end cover 20, and when the clamping air pressure reaches a certain pressure value, the first sealing ring 5 starts to deform. Because the outer diameter, the upper end surface and the lower end surface of the first sealing ring 5 are limited, the deformation of the first sealing ring can only be towards the inner diameter direction. When the pressure value continues to increase again, the first sealing ring 5 begins to clamp the excircle of the semi-finished product of the liquid level transmitter which is pre-installed in the testing single path. After the semi-finished product is clamped, the first protection mechanism is rotated clockwise, so that the axial limiting of the semi-finished product is realized, and as shown in fig. 5, the hidden danger that the semi-finished product is easy to move upwards during testing and pressurizing is solved. Referring to fig. 6 and 7, similarly, during finished product testing, after 20 finished products are loaded into the testing single path, the second protection mechanism is sleeved in from the eight stand columns 2, each opening of the limiting mechanism is guaranteed to be clamped at the wire locking neck of the finished product of the liquid level transmitter, the bolt 23 on the second protection mechanism is opened, the tongue of the bolt 23 is inserted into the opening of the stand column 2, and axial limiting of the finished product testing is achieved. The external pressure controller starts to convey a test air source for the product through the second air path, and after the pressure gauge controls the test air source to be stable, the external data acquisition unit starts to acquire data of different pressure points on the product, so that the product is tested. The gas circuit bottom plate 12 is of a cuboid structure, and a clamping control valve mounting seat is designed on the side surface; the channels of the first air channel and the second air channel on the air channel bottom plate are phi 8mm through holes; and each hole opening is provided with an M12 multiplied by 1 sealing threaded counter bore, and after the air passage connection, redundant hole positions can be sealed by an M12 multiplied by 1 plug. The air path bottom plate 12 is provided with a ground foot 6, and the whole leveling and fixing of the testing device can be realized by adjusting the ground foot 6. The pneumatic control mechanism consists of an oil-water separator, an air pipe 17 and a pneumatic switch 14 which are connected with each other by a pneumatic quick connector 16. The oil-water separator is used for purifying a compressed air source sent by an air compressor, so that oil mist molecules and water vapor molecules in the compressed air source are filtered, the air source sent to a testing device is pure and pollution-free, and related pneumatic control elements can work normally. The oil-water separator is provided with a pressure regulating valve and a pointer pressure gauge, and the function can conveniently and flexibly regulate the air supply pressure of the testing device. The pressure resistance of the air pipe is 1.5MPa, and the pressure resistance requirement of the air path system can be completely met.
The first protection mechanism is used for realizing the axial limiting protection of the semi-finished product 3 to be tested. Mainly comprises a first sealing ring 5, a knob switch 18, a pressing cap 19, an end cover 20 and a special-shaped stop block 21. The first sealing ring 5 is arranged in an inner cavity of the end cover 20, three eccentric guide rails are processed on the upper end face of the end cover 20, a special-shaped stop block 21 is placed on each eccentric guide rail, and the pressing cap 19 limits the special-shaped stop block 21 in the eccentric guide rail on the upper end face of the end cover 20 by means of threads. When the knob switch 18 is manually rotated, the special-shaped stopper 21 can realize radial movement, and the specific implementation principle is shown in fig. 5, so that the axial limit of the detected semi-finished product 3 is realized.
The second protection mechanism is used for axial limiting protection of a measured finished product and mainly comprises an upright post 2, a locknut 7, a lockwasher 8, a protection cover plate 22 and a bolt 23. The excircle of the upright post 2 is processed with a plurality of limit grooves, the upright post 2 is fixed on the air path bottom plate 12 through the locknut 7 and the lockwasher 8, and the direction of the limit grooves is face-to-face with the tongue of the knob switch of the second protection mechanism. Processing has 20 openings on the protective cover plate 22, and the opening is equivalent with surveyed finished product neck position size, and when needs were protected, second protection machanism pressed in surveyed finished product neck position according to hole site relation from stand 2 upper shield, rotates second protection machanism's knob switch again, makes the tongue stretch out, and the card is in stand 2's spacing groove, realizes the protection to being surveyed the finished product.
The pneumatic control mechanism is composed of a pneumatic switch 14, a gas circuit adapter 15, a pneumatic quick connector 16, a gas pipe 17 and an external oil-water separator, and the pneumatic switch is mainly used for realizing the on-off of a clamping gas source. The air path adapter 15 is used for switching a test air source controlled by the pressure gauge into the test device. The oil-water separator is used for purifying a compressed air source sent by an external air compressor, so that oil mist molecules and water vapor molecules in the compressed air source can be filtered, the air source sent to a testing device is ensured to be pure and pollution-free, and related pneumatic control elements can work normally. The oil-water separator is provided with a pressure regulating valve and a pointer pressure gauge, and the function can conveniently and flexibly regulate the air supply pressure of the testing device. The pressure resistance of the air pipe is 1.5MPa, and the pressure resistance requirement of the air path system can be met.
The invention relates to a testing method of a liquid level transmitter testing device based on pneumatic control, which comprises the following steps:
first, the semi-finished product 3 to be tested was loaded into each test lane of the test apparatus for a total of 20. And starting the pneumatic switch 14 by one key, clamping the excircle of the detected semi-finished product 3, and clockwise rotating the knob switch 18 of the first protection mechanism to open the pneumatic switch, so that the axial limit of the detected semi-finished product 3 is realized. Similarly, when the finished product is tested, after 20 finished products are loaded into the test single path, the second protection mechanism is sleeved from the upright column, each notch of the protection cover plate 22 is guaranteed to be clamped at the lock line neck of the finished product of the liquid level transmitter, the bolt 23 is opened, the tongue of the bolt 23 is inserted into the notch of the excircle of the upright column 2, and the axial limit of the finished product is realized.
And then, the external air pressure controller conveys a test air source to the tested product through a second air path, and after the pressure gauge controls the test air source to be stable, the external data acquisition unit acquires data of different pressure points of the tested product to realize the test of the product.
And after the test is finished, the external pressure controller is communicated with the atmosphere to ensure that the test air source is zero. And rotating the knob switch 18 of the first protection mechanism anticlockwise, closing the protection, and taking out the semi-finished products 3 to be tested one by one to finish the single batch test.
The invention can simultaneously realize the test of the finished product and the semi-finished product of the liquid level transmitter. A one-key operation mode based on pneumatic control replaces the original manual wrench operation mode, so that the production efficiency, the safety protection and other aspects are greatly improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a liquid level changer testing arrangement based on pneumatic control which characterized in that: the device comprises a pressurizing main body mechanism, a first protection mechanism, a second protection mechanism and a pneumatic control mechanism, wherein the pressurizing main body mechanism comprises a gas circuit bottom plate (12) and a plurality of same testing single circuits, two mutually independent gas circuit channels are arranged on the gas circuit bottom plate (12), and the first gas circuit is used for transmitting a clamping gas source to each testing single circuit to realize holding of a product; the second gas circuit is used for transmitting a test gas source to a tested product to realize the test of the product; a plurality of sealing hole sites are arranged on the air channel bottom plate (12) in an array manner, and two mutually independent air channel channels are communicated with the test single channel through the sealing hole sites; the testing single path comprises a cylinder body (1) and a piston (4) which is arranged in the cylinder body (1) in a sealing way; the first protection mechanism is used for carrying out axial limiting protection on the semi-finished product (3) to be tested; the second protection mechanism is used for carrying out axial limiting protection on a measured finished product; the pneumatic control mechanism is used for controlling the on-off of the air source.
2. The pneumatically controlled liquid level transmitter testing device of claim 1, wherein: and the bottom surface of the air path bottom plate (12) is provided with a ground foot (6), and the whole leveling and fixing of the testing device are realized through the ground foot (6).
3. The pneumatically controlled liquid level transmitter testing device of claim 1, wherein: the outer surface of the piston (4) is provided with a sealing ring, and the surface of the sealing ring is coated with lubricating sealing grease so that the piston (4) can flexibly slide up and down in the cylinder body (1).
4. The pneumatically controlled liquid level transmitter testing apparatus of claim 3, wherein: the piston (4) is of a hollow structure, the outer surface of the piston (4) is of a stepped reducing structure, a second sealing ring (9) is arranged on the outer surface of the piston (4) with the larger outer diameter, and a third sealing ring (10) is arranged on the outer surface of the piston (4) with the smaller outer diameter; the first air path and the second air path are separated by the piston (4), and when a clamping air source enters air through the first air path, the piston (4) slides upwards in the cylinder body (1).
5. The pneumatically controlled liquid level transmitter testing device of claim 1, wherein: the first protection mechanism comprises a first sealing ring (5), a knob switch (18), a pressing cap (19), an end cover (20) and a special-shaped stop block (21), wherein the first sealing ring (5) can be sleeved on a detected semi-finished product (3), the inner wall of the end cover (20) is grooved and the first sealing ring (5) is placed in the groove, a plurality of eccentric guide rails are processed on the upper end face of the end cover (20), the special-shaped stop block (21) is placed on each guide rail, the knob switch (18) is buckled on the special-shaped stop block (21), a flange is arranged on the bottom face of the knob switch (18), and the flange of the knob switch (18) is tightly pressed through the pressing cap (19) and is fixedly connected with threads on the outer wall of the top of the end cover (20); under the action of the pressing cap (19), the special-shaped stop block (21) is limited in an eccentric guide rail on the upper end surface of the end cover (20); when the knob switch (18) is rotated, the special-shaped stop block (21) can move radially, so that the axial limit of the detected semi-finished product (3) is realized.
6. The pneumatically controlled liquid level transmitter testing device of claim 1, wherein: the second protection mechanism comprises an upright post (2), a locknut (7), a lockwasher (8), a protection cover plate (22) and a bolt (23), wherein a plurality of limiting grooves are processed on the excircle of the upright post (2), the upright post (2) is fixed on the air path bottom plate (12) through the locknut (7) and the lockwasher (8), and the direction of the limiting grooves is opposite to the tongue of the knob switch of the second protection mechanism; a plurality of openings are processed on the protective cover plate (22), the openings are equivalent to the size of the neck position of a measured finished product, when protection is needed, the second protective mechanism is sleeved on the stand column (2) according to hole position relation and pressed at the neck position of the measured finished product, and then the knob switch of the second protective mechanism is rotated to enable the tongue of the second protective mechanism to extend out and be clamped in the limiting groove of the stand column (2), so that protection of the measured finished product is achieved.
7. The pneumatically controlled liquid level transmitter testing device of claim 1, wherein: the pneumatic control mechanism comprises a pneumatic switch (14), a gas circuit adapter (15), a pneumatic quick connector (16), a gas pipe (17) and an oil-water separator, wherein the oil-water separator is used for introducing the gas pipe (17) into a compressed gas source of the testing device for purification, so that oil mist molecules and water vapor molecules in the gas pipe are filtered; pneumatic switch (14) are installed on trachea (17), and pneumatic quick-operation joint (16) are installed on gas circuit adapter (15), and the test air supply of passing through gas circuit adapter (15) with pressure gauge control changes to connect in the testing arrangement.
8. The pneumatically controlled liquid level transmitter testing device of claim 7, wherein: the oil-water separator is provided with a pressure regulating valve and a pointer pressure gauge.
9. A method of testing a pneumatically controlled liquid level transmitter testing apparatus as claimed in any of claims 1 to 8, comprising the steps of:
when the semi-finished products are tested, firstly, a batch of tested semi-finished products (3) are loaded into each testing single path of the testing device, a first gas path is opened to transmit a clamping gas source to each testing single path, so that the tested semi-finished products (3) are tightly held, and then a first protection mechanism is opened to perform axial limiting protection on the tested semi-finished products (3); when the finished products are tested, a batch of tested finished products are firstly loaded into each testing single path of the testing device, and then the second protection mechanism is opened to carry out axial limiting protection on the tested finished products;
and conveying a test air source to the tested product through the second air path, and after controlling the test air source to be stable, starting to acquire data of different pressure points on the tested product by the data acquisition unit to realize the test of the product.
10. A test method according to claim 9, characterized in that: and after the test is finished, introducing atmosphere to enable the gas source of the test to be zero, closing the first protection mechanism, and taking out the semi-finished products (3) to be tested one by one to finish the single batch test.
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| CN205825998U (en) * | 2016-07-06 | 2016-12-21 | 海盐普博电机有限公司 | A kind of testboard of transmitter functions |
| CN207288936U (en) * | 2017-10-02 | 2018-05-01 | 孙虹丹 | A kind of fast-positioning device of mechanical processing |
| CN208568161U (en) * | 2018-08-17 | 2019-03-01 | 浙江清环智慧科技有限公司 | Pressure transmitter measurement device |
| CN109632195A (en) * | 2018-11-30 | 2019-04-16 | 宁波帕瑞戈林智能科技有限公司 | A kind of washing pump air-leakage test head |
| CN110411658A (en) * | 2019-07-31 | 2019-11-05 | 麦克传感器股份有限公司西安分公司 | A kind of pressure-sensing device applied voltage test mechanism |
| CN210375521U (en) * | 2019-07-26 | 2020-04-21 | 无锡格瑞斯科技有限公司 | Pressure transmitter detection device for automatic control system |
| CN111678643A (en) * | 2020-06-23 | 2020-09-18 | 麦克传感器股份有限公司 | Device convenient to disassemble and reliable in sealing and suitable for testing pressure transmitter parts |
| CN211855695U (en) * | 2020-05-13 | 2020-11-03 | 中广核太阳能德令哈有限公司 | Quick interface device for testing flange type pressure transmitter |
| EP3800457A1 (en) * | 2019-10-04 | 2021-04-07 | Afore Oy | Testing device and method for testing differential pressure sensors |
| CN213676638U (en) * | 2020-11-20 | 2021-07-13 | 眉山中车制动科技股份有限公司 | Electric control blocking valve for locomotive brake |
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2021
- 2021-08-13 CN CN202110932807.9A patent/CN113639833A/en active Pending
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| CN205825998U (en) * | 2016-07-06 | 2016-12-21 | 海盐普博电机有限公司 | A kind of testboard of transmitter functions |
| CN207288936U (en) * | 2017-10-02 | 2018-05-01 | 孙虹丹 | A kind of fast-positioning device of mechanical processing |
| CN208568161U (en) * | 2018-08-17 | 2019-03-01 | 浙江清环智慧科技有限公司 | Pressure transmitter measurement device |
| CN109632195A (en) * | 2018-11-30 | 2019-04-16 | 宁波帕瑞戈林智能科技有限公司 | A kind of washing pump air-leakage test head |
| CN210375521U (en) * | 2019-07-26 | 2020-04-21 | 无锡格瑞斯科技有限公司 | Pressure transmitter detection device for automatic control system |
| CN110411658A (en) * | 2019-07-31 | 2019-11-05 | 麦克传感器股份有限公司西安分公司 | A kind of pressure-sensing device applied voltage test mechanism |
| EP3800457A1 (en) * | 2019-10-04 | 2021-04-07 | Afore Oy | Testing device and method for testing differential pressure sensors |
| CN211855695U (en) * | 2020-05-13 | 2020-11-03 | 中广核太阳能德令哈有限公司 | Quick interface device for testing flange type pressure transmitter |
| CN111678643A (en) * | 2020-06-23 | 2020-09-18 | 麦克传感器股份有限公司 | Device convenient to disassemble and reliable in sealing and suitable for testing pressure transmitter parts |
| CN213676638U (en) * | 2020-11-20 | 2021-07-13 | 眉山中车制动科技股份有限公司 | Electric control blocking valve for locomotive brake |
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