CN110118590B - Liquid level sensor detection device - Google Patents
Liquid level sensor detection device Download PDFInfo
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- CN110118590B CN110118590B CN201910552952.7A CN201910552952A CN110118590B CN 110118590 B CN110118590 B CN 110118590B CN 201910552952 A CN201910552952 A CN 201910552952A CN 110118590 B CN110118590 B CN 110118590B
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- pressure
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- 239000007788 liquid Substances 0.000 title claims abstract description 115
- 238000001514 detection method Methods 0.000 title claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 77
- 238000007789 sealing Methods 0.000 claims abstract description 75
- 238000012806 monitoring device Methods 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims description 28
- 210000004907 gland Anatomy 0.000 claims description 19
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The application provides a liquid level sensor detection device relates to industry detection field. The liquid level sensor detection device comprises an air inlet mechanism and a locking mechanism; the air inlet mechanism comprises an air inlet valve, a pressure reducing valve, a pressure monitoring device and an air inlet, the output end of the air inlet valve is respectively connected with the locking mechanism and the pressure reducing valve, and the output end of the pressure reducing valve is connected with the air inlet; the locking mechanism comprises a sealing hose and a locking assembly, the sealing hose surrounds the air inlet, the locking mechanism locks the liquid level sensor to be detected in the sealing hose through the locking assembly under the driving of air pressure, a sealing space is formed in the sealing hose, the pressure reducing valve applies air pressure in the sealing space through the air inlet, and the pressure monitoring device is communicated with the pressure reducing valve and used for detecting the air pressure in the sealing space. The liquid level sensor to be detected is locked and sealed through the locking mechanism and is detected, so that the detection efficiency is improved.
Description
Technical Field
The application relates to the technical field of industrial detection, in particular to a liquid level sensor detection device.
Background
The liquid level sensor is a meter used for indicating and controlling the liquid level in an industrial process measurement and control system, and no unified calibration exists for the calibration of the liquid level sensor at present. Since the level sensor is actually a sensor for detecting the liquid level by detecting the pressure, the calibration work is actually calibrated pressure data, and a pressure source is required, the current level sensor method generally outputs the standard pressure output by the pressure source to the sensor. In the prior art, most of the pressure sources adopted are mechanical pressure generators, and each detection needs one-to-one manual connection and pressure output operation, so that the detection efficiency is low. Moreover, since the liquid level sensor usually adopts a throw-in working mode, and the probe is usually not provided with a separate interface for connecting a pressure source, the current more common calibration method needs a water sump with real depth, the sensor probe is thrown into water to a certain depth, the thrown depth is measured by a scale, and the sensor value is calibrated by the measured value. However, the height of the liquid level checked by the water sump in the method is completely adjusted manually, so that the detection efficiency is low, and time and labor are wasted.
Disclosure of Invention
In view of the foregoing, an object of the embodiments of the present application is to provide a liquid level sensor detection device, so as to improve the problem of low detection efficiency of the liquid level sensor in the prior art.
The embodiment of the application provides a liquid level sensor detection device, which comprises an air inlet mechanism and a locking mechanism; the air inlet mechanism comprises an air inlet valve, a pressure reducing valve, a pressure monitoring device and an air inlet, wherein the input end of the air inlet valve is connected with an external air inlet pipeline, the first output end of the air inlet valve is connected with the locking mechanism, the second output end of the air inlet valve is connected with the input end of the pressure reducing valve, the output end of the pressure reducing valve is connected with the air inlet, and the pressure monitoring device is communicated with the pressure reducing valve; the locking mechanism comprises a sealing hose and a locking assembly, wherein the sealing hose surrounds the air inlet, after air enters the pressure reducing valve through the air inlet valve, the air pressure output by the first output end drives the locking mechanism to enable a liquid level sensor to be detected, which is placed in the sealing hose, to be locked in the sealing hose through the locking assembly, so that a sealing space is formed in the sealing hose, the pressure reducing valve applies air pressure in the sealing space through the air inlet, and the pressure monitoring device is communicated with the pressure reducing valve so as to detect the air pressure in the sealing space through the pressure monitoring device.
In the implementation process, the air inlet mechanism is matched with the locking mechanism, the air driving locking mechanism is used for locking and sealing the liquid level sensor to be detected, and air pressure is applied to the liquid level sensor, so that the detection of the liquid level sensor is realized, the liquid level sensor is not required to be put into a water sump, one-to-one connection and pressure output operation are not required to be manually carried out during each detection, the operation steps are simplified, and the detection efficiency of the liquid level sensor is improved.
Optionally, the device further comprises a frame, the locking mechanism further comprises a locking power source and a pressing plate, and the locking assembly comprises a locking gland and a locking head; the pressing plate is arranged on the frame, an included angle of a preset angle is formed between the plane where the pressing plate is arranged and the insertion direction of the liquid level sensor to be detected, and the pressing plate comprises at least one first through hole for inserting the liquid level sensor to be detected; the locking gland is arranged around the inner wall of the first through hole, a first step surface is arranged on the outer wall of the locking gland facing the pressing plate, the first step surface is propped against the pressing plate, and the inner wall of the locking gland facing the sealing hose is attached to the locking head; the locking head is arranged around the outer wall of the sealing hose, the thickness of the locking head towards the outer wall of the locking gland along the inserting direction is gradually increased, and the locking power source is connected with the first output end and used for applying acting force with the same direction as the inserting direction to the pressing plate under the action of air pressure.
In the implementation process, the pressing plate is driven by the locking power source to prop against the first step surface of the locking gland, the locking head is pressed by the locking gland, and the locking head surrounds the outer wall of the joint sealing hose, so that the sealing hose and the liquid level sensor to be tested are tightly jointed to form a sealing space, the tightness of the sealing space is ensured, the throwing setting of the liquid level sensor is not needed manually, and the detection efficiency and the accuracy are improved.
Optionally, the locking mechanism further comprises a fixing plate, the fixing plate is provided with at least one second through hole for being inserted into the liquid level sensor to be detected, the at least one second through hole corresponds to the at least one first through hole in position, the locking head is provided with a second step surface at a contact position with the second through hole, and the second step surface is propped against the fixing plate.
In the implementation process, the locking head is propped against the fixed plate through the second step surface, so that the locking mechanism is prevented from sliding downwards due to air pressure when the liquid level sensor is locked, the sealing performance of a sealing space caused by loosening of the locking mechanism is prevented from being reduced, and the detection accuracy is improved.
Optionally, the locking power source is an air cylinder.
In the implementation process, the air cylinder is used as a locking power source, so that the pneumatic device has the advantages of simple and portable structure and simplicity in installation and maintenance, and meanwhile, the energy cost is reduced.
Optionally, the inner diameter of the sealing hose is larger than the outer diameter of the liquid level sensor to be detected, and the difference between the inner diameter of the sealing hose and the outer diameter of the liquid level sensor to be detected is smaller than or equal to a preset length.
In the implementation process, when the outer diameter of the liquid level sensor to be detected is slightly smaller than the inner diameter of the sealing hose, the sealing hose can be ensured to completely and tightly surround the liquid level sensor to be detected, so that the detection accuracy is ensured.
Optionally, the locking component and the air inlet are at least two, the air inlet mechanism further comprises a gas dividing valve, the gas dividing valve comprises at least two gas dividing channels, the number of the locking component, the number of the air inlet and the number of the gas dividing channels are the same, and each gas dividing channel is connected with the corresponding air inlet respectively.
In the implementation process, the locking components and the air inlets are at least two, and gas is input into each air inlet through the gas dividing valve, so that the at least two locking components are simultaneously driven to detect at least two liquid level sensors, batch detection of the liquid level sensors can be realized, and the detection efficiency is improved.
Optionally, the relief pressure valve includes one-level relief pressure valve and second grade precision relief pressure valve, the input of one-level relief pressure valve with first output is connected, the output of one-level relief pressure valve with the input of second grade precision relief pressure valve is connected, the output of second grade precision relief pressure valve with the air inlet is connected.
In the implementation process, the two-stage pressure reducing valve is used for limiting the air pressure entering the locking mechanism and the position of the liquid level sensor to be detected, so that the safety of the liquid level sensor detection device is improved.
Optionally, the monitoring device comprises a pressure gauge, and the pressure gauge is communicated with the output end of the secondary precision pressure reducing valve.
Optionally, the air intake mechanism comprises a manual diverter valve.
In the implementation process, the manual reversing valve is used for controlling the gas to flow into the locking power source or the pressure reducing valve, so that the operation simplicity of the pneumatic control is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of an air intake mechanism according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a locking mechanism and a part of an air intake mechanism according to an embodiment of the present application;
fig. 3 is a schematic structural view of a locking mechanism and a part of an air intake mechanism in another direction according to an embodiment of the present application;
fig. 4 is a schematic view of a part of a structure of a locking mechanism according to an embodiment of the present application.
Icon: 10-a liquid level sensor detection device; 12-an air intake mechanism; 121-an intake valve; 122-a pressure relief valve; 1221-a primary pressure relief valve; 1222-a secondary precision pressure relief valve; 123-pressure monitoring device; 124-air inlet; 125-a gas dividing valve; 14-a locking mechanism; 141-sealing the hose; 142-locking the power source; 143-a platen; 144-locking the gland; 1441—a first step surface; 1442-a second step surface; 145-locking head; 146-fixing plate; 16-a frame.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
For the manufacturing process of the liquid level sensor, a calibration source is required to be set when the liquid level sensor is calibrated, and the calibration work is the calibrated pressure data because the liquid level sensor is the pressure sensor, and the calibration source is usually the pressure source. However, according to the research of the applicant, the current pressure source is generally a mechanical pressure generator, the mechanical pressure generator and the liquid level sensor are manually connected each time calibration is performed, and the mechanical pressure generator is operated to output pressure to the liquid level sensor, so that the calibration steps are complex, and the calibration efficiency is reduced; meanwhile, the existing liquid level sensor is generally in a throw-in working mode, namely the liquid level sensor is thrown into a container with known water depth, the liquid level sensor is measured according to actual water depth data, and the detection efficiency of the liquid level sensor is further reduced.
In order to solve the above-described problems, the present embodiment provides a liquid level sensor detection apparatus 10.
The liquid level sensor detection device 10 comprises an air inlet mechanism 12 and a locking mechanism 14, wherein one end of the air inlet mechanism 12 is connected with an external air inlet pipeline, the other end of the air inlet mechanism 12 is connected with the locking mechanism 14, and the locking mechanism 14 is used for fixing and detecting a liquid level sensor to be detected.
Referring to fig. 1, fig. 1 is a block diagram of an air intake mechanism according to an embodiment of the present application.
The intake mechanism 12 includes an intake valve 121, a pressure reducing valve 122, a pressure monitoring device 123, and an intake port 124. The input end of the air inlet valve 121 is connected with an external air inlet pipeline, the first output end of the air inlet valve 121 is connected with the locking mechanism 14, the second output end of the air inlet valve 121 is connected with the input end of the pressure reducing valve 122, and the output end of the pressure reducing valve 122 is connected with the air inlet 124, so that air is input into the locking mechanism 14 through the air inlet 124.
Through the structure of the air inlet mechanism 12, the air with different pressures is respectively input into the position of the liquid level sensor to be detected and the locking mechanism 14, and the pressure applied to the liquid level sensor to be detected can be independently and finely adjusted, so that the safety and the detection accuracy of the liquid level sensor to be detected are improved.
In the present embodiment, the intake valve 121 may be composed of a valve body, a rotary check valve, a butterfly valve, and a control cylinder. The rotary check valve is provided with a counterweight and a fluororubber sealing ring, when the compressor of the external air inlet pipeline is started, the compressor main engine is in air suction, and the rotary check valve is rapidly opened due to pressure difference, and is controlled by the counterweight after the compressor is stopped and the pressure difference is lost, so that the rotary check valve can be timely and rapidly closed tightly, and the phenomenon of stopping and spitting oil is avoided. The opening and closing of the butterfly valve is controlled by the control cylinder, and the butterfly valve is controlled to be opened or closed according to the extending length of the piston of the control cylinder, so that the air inflow of the compressor is regulated.
Alternatively, the gas separation of the first output end and the second output end of the intake valve 121 may be implemented by a manual reversing valve, and then the intake valve 121 may further include a manual reversing valve disposed between the valve body and the pressure reducing valve 122, where the manual reversing valve is also called a kris valve, and one of the valves has a multi-directional adjustable channel, so as to change the flow direction of the fluid at a proper time.
It should be appreciated that in addition to manual directional valves, the present embodiment may also employ electromagnetic directional valves to achieve gas diversion. Different electromagnetic directional valves are used in different positions of the control system, and most commonly used are one-way valves, safety valves, directional control valves, speed regulating valves and the like. Therefore, the electromagnetic reversing valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be better ensured.
The pressure reducing valve 122 is a valve that reduces the inlet pressure to a certain desired outlet pressure after adjustment, and automatically stabilizes the outlet pressure by means of the energy of the medium itself, and in this embodiment, the inlet (input) of the pressure reducing valve 122 is the second output of the air inlet valve 121, and the outlet (output) thereof is connected to the air inlet 124.
Alternatively, the pressure reducing valve 122 in this embodiment may be a combination pressure reducing valve, an acting pressure reducing valve, a piston pressure reducing valve, a film pressure reducing valve, a direct acting pressure reducing valve, or other types.
The liquid level sensor to be detected is sensitive to air pressure, and the liquid level sensor may be damaged when the air pressure is too large. Thus, as an alternative embodiment, the pressure relief valve 122 in the air intake mechanism 12 may include a primary pressure relief valve 1221 and a secondary precision pressure relief valve 1222.
The compressed gas is output from the intake valve 121 and enters the primary pressure reducing valve 1221 to a first preset pressure, the primary pressure reducing valve 1221 limits the compressed gas to a second preset pressure, and the compressed gas enters the secondary precision pressure reducing valve 1222 and is finely adjusted to a third preset pressure by the secondary precision pressure reducing valve 1222. The first preset pressure can be a pressure range which can be 0.4-0.8MPa, the second preset pressure can be 0.4MPa, and the third preset pressure can be specifically adjusted according to the detection range of the liquid level sensor to be detected.
In the embodiment, the two-stage precise pressure reducing valve 1222 is arranged, so that the air pressure entering the space where the locking mechanism 14 and the liquid level sensor are located is limited based on the two-stage pressure reducing valve, and the detection safety is improved.
Because the secondary precise pressure reducing valve 1222 is used for outputting gas to the sealed space where the liquid level sensor to be detected is located through the gas inlet 124, the gas pressure at the output end of the secondary precise pressure reducing valve 1222 is the same as the pressure applied to the liquid level sensor to be detected. Then as an alternative implementation manner, the pressure monitoring device 123 is communicated with a branch of the secondary precise pressure reducing valve 1222, the pressure of the liquid level sensor to be detected is detected by the pressure monitoring device 123, the pressure of the liquid level sensor to be detected by the pressure monitoring device 123 is compared with the pressure detected by the liquid level sensor to be detected, so that the detection of the liquid level sensor to be detected can be realized, if the error is smaller than the error threshold, the liquid level sensor to be detected is normal, otherwise, the liquid level sensor to be detected needs to be calibrated.
The secondary precision pressure reducing valve 1222 adopts the opening degree of an opening and closing member in a control valve body to adjust the flow rate of a medium, reduces the pressure of the medium, and simultaneously adjusts the opening degree of the opening and closing member by the action of the valve back pressure, so that the valve back pressure is kept within a certain range, and under the condition that the inlet pressure is continuously changed, the outlet pressure is kept within a set range, thereby protecting the valve appliances behind. Alternatively, the two-stage precision pressure reducing valve 1222 in the present embodiment may be of a proportional pressure reducing valve, a self-operated pressure reducing valve, a back pressure regulating valve, or the like.
Alternatively, the pressure monitoring device 123 may be a pressure gauge, or may be other elements capable of detecting the pressure of gas, such as a pressure sensor.
Referring to fig. 2, fig. 3 and fig. 4, fig. 2 is a schematic structural diagram of a locking mechanism and a part of an air intake mechanism provided in an embodiment of the present application, fig. 3 is a schematic structural diagram of another direction of the locking mechanism and the part of the air intake mechanism provided in an embodiment of the present application, and fig. 4 is a schematic structural diagram of a part of the locking mechanism provided in an embodiment of the present application.
The locking mechanism 14 comprises a sealing hose 141 and a locking component, the sealing hose 141 is arranged around the air inlet 124, an opening for inserting a liquid level sensor to be detected is reserved at the upper end of the sealing hose 141, which is far away from the air inlet 124, when the liquid level sensor is placed in the sealing hose 141, the locking component locks the liquid level sensor under the driving of air pressure transmitted by the first output end of the air inlet valve 121, so that a sealing space is formed between the sealing hose 141 and the liquid level sensor, the pressure reducing valve 122 applies air pressure into the sealing space through the air inlet 124, and then the pressure born by the liquid level sensor in the sealing space can be detected through the pressure monitoring device 123.
Wherein, in order to make the liquid level sensor to be detected easily insert the sealing hose 141 and closely attach, the inner diameter of the sealing hose 141 is greater than the outer diameter of the liquid level sensor to be detected, and the difference between the inner diameter of the sealing hose and the outer diameter of the liquid level sensor to be detected is less than or equal to a preset length. Alternatively, the predetermined length may be 1 mm, or other suitable length selected according to the material characteristics of the sealing hose 141.
Optionally, the liquid level sensor detection apparatus 10 may further include a frame 16, and the air intake mechanism 12 and the locking mechanism 14 are disposed on the frame 16. It should be appreciated that the material of the frame 16 may be a metal, an alloy, a plastic, a composite material, or the like.
The locking mechanism 14 may also include a locking power source 142 and a pressure plate 143, and the locking assembly includes a locking gland 144, a locking head 145.
The locking power source 142 may be a pneumatic source, an electric source or other driving sources, and in this embodiment, since the liquid level sensor to be detected performs pressurization detection through gas, in order to reduce the equipment cost, the locking power source 142 may be a cylinder, which is a cylindrical metal part guiding the piston to perform linear reciprocation in the cylinder.
The cylinder is selected as the locking power source 142, so that the pneumatic structure has the advantages of simple structure, portability and simplicity in installation and maintenance, and meanwhile, the equipment cost and the energy cost are reduced.
The pressing plate 143 is disposed on the frame 16, and an included angle formed by a plane where the pressing plate 143 is located and an insertion direction of the liquid level sensor to be detected forms a preset angle, the pressing plate 143 includes at least one first through hole, and the first through hole is used for inserting the liquid level sensor to be detected, so that a shape of the first through hole is similar to a cross-sectional shape of the liquid level sensor to be detected. The preset angle between the pressure plate 143 and the insertion direction of the liquid level sensor to be detected in this embodiment may be approximately 90 °. Alternatively, the material of the platen 143 and the frame 16 may be the same.
The locking gland 144 is disposed around the inner wall of the first through hole, and its inner wall is disposed to fit the outer wall of the locking head 145. The locking gland 144 is provided with a first stepped surface 1441 in a direction of the pressing plate 143 (insertion direction of the liquid level sensor to be detected), and the pressing plate 143 is abutted against the first stepped surface 1441 when the pressing plate 143 is driven by the locking power source 142 to apply downward pressure, thereby applying downward pressure to the locking gland 144.
The locking head 145 is disposed around the outer wall of the sealing hose 141, the outer wall of the locking head 145 is gradually increased in thickness in the pressing direction of the pressing plate 143, and the inclined angle of the outer wall of the locking head 145 can decompose the downward pressure received into horizontal inward and vertical downward forces. When the pressing plate 143 is pressed down, the locking gland 144 is driven to move downwards, the inner wall of the locking gland 144 is gradually attached to the outer wall of the locking head 145, and the locking head 145 is subjected to a horizontal inward and vertical downward acting force due to the outer wall of the locking head 145, so that an inward extrusion acting force is formed on the sealing hose 141, the sealing hose 141 is deformed, and a liquid level sensor to be detected, which is surrounded by the sealing hose 141, is locked, so that a sealing space is formed therein.
The inclination angle of the outer wall of the locking head 145 can be specifically adjusted according to the locking requirement of the liquid level sensor to be detected.
Optionally, in order to avoid the problem that the locking head 145 slides along the insertion direction of the liquid level sensor to be detected, the sealing space is reduced, so that the detection result is inaccurate, the locking mechanism 14 may further include a fixing plate 146, the fixing plate 146 is disposed on the frame 16, and an included angle formed by a plane of the fixing plate 146 and the insertion direction of the liquid level sensor to be detected forms a preset angle, and the preset angle between the plane of the fixing plate 146 and the insertion direction of the liquid level sensor to be detected is approximately the same as the preset angle between the plane of the pressing plate 143 and the insertion direction of the liquid level sensor to be detected.
The fixing plate 146 is provided with at least one second through hole, and the position of the second through hole corresponds to the position of the first through hole, and is used for inserting the liquid level sensor to be detected.
The locking head 145 is provided with a second step surface 1442 at a position where the second through hole contacts, and the second step surface 1442 abuts against the fixing plate 146 when receiving downward force, so that the locking head 145 is prevented from continuing to slide downwards, stability of the locking mechanism 14 is improved, and detection accuracy is ensured.
In order to further improve the detection efficiency when detecting the liquid level sensor, the liquid level sensor detection device 10 in the embodiment of the present application may also detect a plurality of liquid level sensors to be detected at the same time, and then the liquid level sensor detection device 10 includes at least two locking assemblies and an air inlet 124, and the air inlet mechanism 12 further includes a gas dividing valve 125.
The gas dividing valve 125 includes at least two gas dividing channels, the input end of each gas dividing channel is connected with the output end of the pressure reducing valve 122, and the output end of each gas dividing channel is connected with the corresponding gas inlet 124, at this time, the number of the locking components, the number of the gas inlet 124 and the number of the gas dividing channels are the same.
When the liquid level sensor detection device 10 detects, at least two liquid level sensors to be detected are respectively inserted into corresponding sealing hoses 141, each liquid level sensor to be detected and the corresponding sealing hose 141 form a sealing space, a compressor and an air inlet valve 121 are opened, the air inlet valve 121 respectively inputs compressed air into a pressure reducing valve 122 and a locking power source 142 in a locking mechanism 14, the locking power source 142 drives a pressing plate 143 to apply an acting force to a locking pressing cover 144, the locking pressing cover 144 presses the sealing hose 141 under the acting force to deform, so that the liquid level sensor to be detected is tightly wrapped to prevent the sealing space from being communicated with the outside, then the air pressure in the sealing space is regulated to a preset value through the pressure reducing valve 122, the reading of the pressure monitoring device 123 is the same as the preset value, and the reading is compared with the detection value of the liquid level sensor to obtain a detection result.
In summary, the embodiment of the application provides a liquid level sensor detection device, which includes an air inlet mechanism and a locking mechanism; the air inlet mechanism comprises an air inlet valve, a pressure reducing valve, a pressure monitoring device and an air inlet, wherein the input end of the air inlet valve is connected with an external air inlet pipeline, the first output end of the air inlet valve is connected with the locking mechanism, the second output end of the air inlet valve is connected with the input end of the pressure reducing valve, the output end of the pressure reducing valve is connected with the air inlet, and the pressure monitoring device is communicated with the pressure reducing valve; the locking mechanism comprises a sealing hose and a locking assembly, wherein the sealing hose surrounds the air inlet, after air enters the pressure reducing valve through the air inlet valve, the air pressure output by the first output end drives the locking mechanism to enable a liquid level sensor to be detected, which is placed in the sealing hose, to be locked in the sealing hose through the locking assembly, so that a sealing space is formed in the sealing hose, the pressure reducing valve applies air pressure in the sealing space through the air inlet, and the pressure monitoring device is communicated with the pressure reducing valve so as to detect the air pressure in the sealing space through the pressure monitoring device.
In the implementation process, the air inlet mechanism is matched with the locking mechanism, the air driving locking mechanism is used for locking and sealing the liquid level sensor to be detected, and air pressure is applied to the liquid level sensor, so that the detection of the liquid level sensor is realized, the liquid level sensor is not required to be put into a water sump, one-to-one connection and pressure output operation are not required to be manually carried out during each detection, the operation steps are simplified, and the detection efficiency of the liquid level sensor is improved.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, the flow charts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus according to various embodiments of the present application, and the manner in which the platen 143 is pressurized, the manner in which the locking assembly is locked, and the manner in which the power source of the locking power source 142 is provided may be implemented in other manners as well. In this regard, each block in the flowchart or block diagrams may represent a portion of a module. It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
In addition, the functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (7)
1. A liquid level sensor detection device, which is characterized by comprising an air inlet mechanism and a locking mechanism;
the air inlet mechanism comprises an air inlet valve, a pressure reducing valve, a pressure monitoring device and an air inlet, wherein the input end of the air inlet valve is connected with an external air inlet pipeline, the first output end of the air inlet valve is connected with the locking mechanism, the second output end of the air inlet valve is connected with the input end of the pressure reducing valve, the output end of the pressure reducing valve is connected with the air inlet, and the pressure monitoring device is communicated with the pressure reducing valve;
the locking mechanism comprises a sealing hose and a locking component, wherein the sealing hose is arranged around the air inlet, after air enters the pressure reducing valve through the air inlet valve, the air pressure output by the first output end drives the locking mechanism to enable a liquid level sensor to be detected, which is placed in the sealing hose, to be locked in the sealing hose through the locking component, so that a sealing space is formed in the sealing hose, and the pressure reducing valve applies air pressure in the sealing space through the air inlet valve so as to detect the air pressure in the sealing space through the pressure monitoring device;
the pressure reducing valve comprises a first-stage pressure reducing valve and a second-stage precise pressure reducing valve, the input end of the first-stage pressure reducing valve is connected with the first output end, the output end of the first-stage pressure reducing valve is connected with the input end of the second-stage precise pressure reducing valve, and the output end of the second-stage precise pressure reducing valve is connected with the air inlet;
the device also comprises a frame, the locking mechanism also comprises a locking power source and a pressing plate, and the locking assembly comprises a locking gland and a locking head;
the pressing plate is arranged on the frame, an included angle of a preset angle is formed between the plane where the pressing plate is arranged and the insertion direction of the liquid level sensor to be detected, and the pressing plate comprises at least one first through hole for inserting the liquid level sensor to be detected;
the locking gland is arranged around the inner wall of the first through hole, a first step surface is arranged on the outer wall of the locking gland facing the pressing plate, the first step surface is propped against the pressing plate, and the inner wall of the locking gland facing the sealing hose is attached to the locking head;
the locking head is arranged around the outer wall of the sealing hose, the thickness of the locking head towards the outer wall of the locking gland along the inserting direction is gradually increased, and the locking power source is connected with the first output end and used for applying acting force with the same direction as the inserting direction to the pressing plate under the action of air pressure.
2. The liquid level sensor detection device according to claim 1, wherein the locking mechanism further comprises a fixing plate provided with at least one second through hole for inserting the liquid level sensor to be detected, the at least one second through hole corresponds to the at least one first through hole in position, the locking head is provided with a second step surface at a contact position with the second through hole, and the second step surface abuts against the fixing plate.
3. The liquid level sensor detection apparatus according to claim 1 or 2, wherein the locking power source is a cylinder.
4. The liquid level sensor detection device according to claim 1, wherein an inner diameter of the sealing hose is larger than an outer diameter of the liquid level sensor to be detected, and a difference between the inner diameter of the sealing hose and the outer diameter of the liquid level sensor to be detected is smaller than or equal to a preset length.
5. The liquid level sensor detection device according to claim 1, wherein the locking assembly and the air inlet are at least two, the air inlet mechanism further comprises a gas dividing valve, the gas dividing valve comprises at least two gas dividing channels, the locking assembly, the air inlet and the gas dividing channels are the same in number, and each gas dividing channel is connected with the corresponding air inlet respectively.
6. The liquid level sensor detection device of claim 1, wherein the monitoring device comprises a pressure gauge in communication with an output of the secondary precision pressure relief valve.
7. The liquid level sensor detection apparatus according to claim 1, wherein the air intake mechanism includes a manual directional valve.
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| CN111693200B (en) * | 2020-06-22 | 2021-07-23 | 南通科达建材科技股份有限公司 | Assembly type building connection structure locking force monitoring device |
| CN113375755B (en) * | 2021-08-12 | 2021-11-19 | 深之蓝(天津)水下智能科技有限公司 | Depth detector of underwater equipment and underwater equipment |
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