CN210108597U - Pressure test unit and pressure tester - Google Patents
Pressure test unit and pressure tester Download PDFInfo
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- CN210108597U CN210108597U CN201921282457.0U CN201921282457U CN210108597U CN 210108597 U CN210108597 U CN 210108597U CN 201921282457 U CN201921282457 U CN 201921282457U CN 210108597 U CN210108597 U CN 210108597U
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Abstract
The application relates to a pressure test unit and pressure tester, wherein the pressure test unit includes: a housing; the shell is provided with a first through hole; a circuit board within the housing; the circuit board is provided with a signal processor, a pressure sensor and a wireless signal transmitter which are respectively connected with the signal processor; the pressure sensor is provided with a pressure joint; one end of the pressure joint extends out of the shell through the first through hole and is connected with a position to be measured; the antenna on the shell is connected with the wireless signal transmitter; the pressure sensor is used for detecting pressure data of a position to be detected connected with the pressure joint and sending the pressure data to the signal processor; the signal processor sends the pressure data to the wireless signal transmitter; the wireless signal transmitter transmits the pressure data to the terminal equipment which is in wireless connection with the pressure testing unit in advance through the antenna. Therefore, the pressure data of the pressure test units can be observed at the receiving terminal at the same time, the receiving terminal is far away from the hydraulic system, the personal safety of maintenance personnel is protected, and the rotation and action detection of the machine is facilitated.
Description
Technical Field
The application relates to the technical field of hydraulic engineering equipment, in particular to a pressure testing unit and a pressure tester.
Background
In the maintenance process of the hydraulic system, detecting the system pressure is the first link, and detecting pressure values of each section of a power element at a power source, a control element at the middle section and an execution element at the tail end of the hydraulic system by using a pressure tester is a key means for searching a fault position.
In the related art, when the traditional mechanical pointer pressure testing unit is used for pressure detection, the pointer pressure testing unit needs to be connected to points to be tested of a hydraulic system, the points to be tested are dispersed at each part needing to be detected in the hydraulic system, a maintenance worker can check the reading of the pressure testing unit only when arriving at the points to be tested of the pointer pressure testing unit, and the situation of only one pressure testing unit can be checked at a time. Meanwhile, maintenance personnel approach the hydraulic system, and the machine may have collision danger during operation, which is not favorable for rotation and various operation detection of the machine.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present application is directed to overcoming the shortcomings of the prior art and providing a pressure testing unit and a pressure tester.
The purpose of the application is realized by the following technical scheme:
a first aspect of the present application provides a pressure testing unit comprising:
a housing; the shell is provided with a first through hole;
a circuit board located inside the housing; the circuit board is provided with a signal processor, a pressure sensor and a wireless signal emitter, wherein the pressure sensor and the wireless signal emitter are respectively connected with the signal processor; the pressure sensor has a pressure tap; one end of the pressure joint extends out of the shell through the first through hole and is used for connecting a position to be measured;
an antenna located on the housing; the antenna is connected with the wireless signal transmitter;
the pressure sensor is used for detecting pressure data of a position to be detected connected with the pressure joint and sending the pressure data to the signal processor; the signal processor is used for sending the pressure data to the wireless signal transmitter; the wireless signal transmitter is used for transmitting the pressure data to terminal equipment which is in wireless connection with the pressure testing unit in advance through the antenna.
Optionally, the housing is further provided with a second through hole;
one end of the antenna is located inside the shell, and the other end of the antenna extends out of the shell through the second through hole.
Optionally, the housing includes: the device comprises a main side surface, a first side surface and a second side surface, wherein the first side surface and the second side surface are detachably connected with the main side surface;
the first through hole is arranged on the first side surface;
the second through hole is disposed on the second side surface.
Optionally, a display connected with the signal processor is further disposed on the housing;
the signal processor is also used for sending the pressure data to the display for display.
Optionally, the second side surface is made of a transparent material; the display is arranged on the circuit board and is close to the second side face; the display screen of the display faces the second side.
Optionally, a power supply is further disposed on the circuit board and used for supplying power to the pressure testing unit.
Optionally, the charging device further comprises a power switch connected with the power supply, a charging jack and an electric quantity indicator light; the power switch and the charging jack are arranged outside the shell; the electric quantity indicator lamp is arranged inside the shell close to the second side face.
Optionally, the second side surface is further provided with a third through hole and a fourth through hole; the power switch extends out of the shell through the third through hole, and the charging jack extends out of the shell through the fourth through hole.
A second aspect of the present application provides a pressure tester comprising a terminal device and a plurality of pressure testing units as described in the first aspect of the present application.
Optionally, the terminal device includes a mobile phone or a computer.
This application adopts above technical scheme, has following beneficial effect:
when the pressure testing unit is used, the pressure connector is connected to a position to be tested of the hydraulic system, the measured pressure data is sent to the signal processor through the pressure sensor, the signal processor sends the pressure data to the wireless signal transmitter, and the wireless signal transmitter sends the pressure data to the terminal equipment through the antenna. Therefore, maintenance personnel can access each pressure test unit to each position to be tested in advance, receive pressure data sent by each pressure test unit at the terminal equipment, and observe the pressure data of a plurality of pressure test units at the same time. Meanwhile, the terminal equipment is far away from the hydraulic system, so that the personal safety of maintenance personnel can be better protected, and the rotation and action detection of the machine are facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a pressure testing unit according to an embodiment of the present application;
FIG. 2 is a diagram illustrating circuit connections in a pressure test cell according to an embodiment of the present application;
FIG. 3 is a diagram illustrating circuit connections in a pressure test cell according to another embodiment of the present application;
FIG. 4 is a schematic view of a second side of a pressure testing unit according to another embodiment of the present application;
fig. 5 is a connection diagram of a pressure tester according to another embodiment of the present application.
In FIGS. 1-5:
11-a housing; 12-a pressure joint; 13-an antenna; 14-a major side; 15-a first side; 16-a second side; 17-a circuit board; 21-a pressure sensor; 22-a signal processor; 23-a wireless signal transmitter; 31-a display; 33-a power switch; 34-a charging jack; 35-electric quantity indicator light; 41-noise sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the claims. The following is a description of the embodiments of the present invention, and the present invention is not limited to the embodiments described in the claims.
Examples
Referring to fig. 1, fig. 1 is a schematic structural diagram of a pressure testing unit according to an embodiment of the present application.
Referring to fig. 2, fig. 2 is a diagram illustrating a connection relationship of a circuit in a pressure testing unit according to an embodiment of the present application.
As shown in fig. 1 and 2, the present embodiment provides a pressure test unit including:
a housing 11; the shell is provided with a first through hole;
a circuit board located inside the housing 11; the circuit board is provided with a signal processor 22, a pressure sensor 21 and a wireless signal emitter 23 which are respectively connected with the signal processor 22; the pressure sensor 21 has a pressure connector 12; one end of the pressure joint 12 extends out of the shell 11 through the first through hole and is used for connecting a position to be measured;
an antenna 13 located on the housing 11; the antenna 13 is connected with the wireless signal transmitter 23;
the pressure sensor 21 is configured to detect pressure data of a position to be measured to which the pressure connector 12 is connected and send the pressure data to the signal processor 22; the signal processor 22 is used for sending the pressure data to the wireless signal transmitter 23; the wireless signal transmitter 23 is used to transmit the pressure data via the antenna 13 to the terminal device 24 that has previously established a wireless connection with the pressure test unit.
When the pressure test unit is used, the pressure joint 12 is connected to a position to be tested of a hydraulic system, the measured pressure data is sent to the signal processor 22 by the pressure sensor 21, the signal processor 22 sends the pressure data to the wireless signal transmitter 23, and the wireless signal transmitter 23 sends the pressure data to the terminal equipment 24 through the antenna. Thus, maintenance personnel can access each pressure test unit to each position to be tested in advance, receive pressure data sent by each pressure test unit at the terminal equipment 24 at the same time, and observe the pressure data of a plurality of pressure test units at the same time. Meanwhile, the terminal device 24 is far away from the hydraulic system, so that the personal safety of maintenance personnel can be better protected, and the rotation and action detection of the machine are facilitated.
In the actual detection process, a set of hydraulic system comprises a hydraulic pump, a hydraulic control valve and an execution oil cylinder, and a pressure joint of a pressure test unit can be arranged at the position of an inlet or an outlet of the hydraulic pump, the hydraulic control valve and the execution oil cylinder. The pressure joint is connected with a shell threaded hole of a position to be tested, the pressure joint of the pressure test unit of the embodiment adopts international standard G1/4 threads, the caliber of the threaded hole of different equipment is inconsistent, and different equipment is tested by self-provided transition joints with different threads. The models of common equipment and threaded holes are respectively as follows: the screw hole of the position to be measured of the Kawasaki pump is G1/4, the screw hole of the position to be measured of the small-sized excavator is M12 multiplied by 1.5, and the screw hole of the position to be measured of the German Leishi main pump is M14 multiplied by 1.5.
Some threaded holes of the positions to be tested of the equipment are occupied by pressure sensors of the equipment, redundant interfaces are not connected with a pressure testing unit, and at the moment, a tee pipe fitting with the same caliber as the threaded holes needs to be provided. During testing, the pressure sensor of the equipment is firstly detached, the self-provided tee pipe fitting is connected with the threaded hole of the position to be tested, and then the pressure sensor and the pressure testing unit of the equipment are connected with the tee pipe fitting.
The pressure sensor in the pressure test unit may include a positive pressure sensor, a negative pressure sensor, and a temperature and humidity pressure integrated sensor. Meanwhile, the pressure sensor has a plurality of measuring ranges, and the pressure test unit with the pressure sensor with the proper measuring range can be selected according to actual needs and the condition of the position to be tested. The model number of the pressure sensor used in this embodiment is MIK-P300. The pressure sensor is a well-established technology, and reference can be made to the related technology, which is not described herein again.
Wherein, wireless signal transmitter can send 20 ~ 20000 pressure value signal every second, and is optional, and wireless signal transmitter sends 50 pressure value signals every second in this embodiment, and the sampling interval is 20 ms. The shorter the sampling interval is, the higher the accuracy of the pressure value signal change is, and accordingly the requirement on hardware is higher, so that generally, 50 pressure value signals are sent every second to meet the observation requirement. The model of the wireless signal transmitter used in the present embodiment is LT 8920. The connection between the wireless signal transmitter and the terminal device belongs to the existing mature technology, and can be realized by referring to the related technology, which is not described herein again.
The signal processor can comprise a singlechip or a microprocessor. The signal processor used in this embodiment is a microprocessor, and is model number TMS320F 2812.
The noise of the equipment is also an important mode for detecting the problem of the equipment, so that when the pressure data is detected, the noise of the surrounding equipment is also detected, and the observer can make more accurate judgment. In some embodiments, a noise sensor 41 for recording the noise of the surrounding equipment is further disposed on the circuit board, the noise sensor 41 is connected to the signal processor 22, the noise sensor 41 sends the noise data to the signal processor 22, the signal processor 22 sends the noise data to the wireless signal transmitter 23, and the wireless signal transmitter 23 receives the noise data and sends the noise data to the terminal equipment 24 which is connected to the pressure testing unit in advance through an antenna. The model of the noise sensor used in the present embodiment is CN 61M. The method for using the correlated noise sensor is the existing mature technology, and can be realized by referring to the correlated technology, which is not described herein again.
As shown in fig. 1, in the present embodiment, a second through hole is further provided on the housing 11 of the pressure testing unit; one end of the antenna 13 is located inside the housing 11, and the other end protrudes out of the housing 11 through the second through hole. The antenna is arranged outside the shell, so that the interference of the antenna on the electromagnetic environment of the circuit board inside the shell can be effectively avoided, and meanwhile, the signal transmission efficiency and the transmission quality are improved.
It is understood that the shape of the pressure test unit may include, but is not limited to, a rectangular parallelepiped. As shown in fig. 1, the pressure test unit is shaped as a rectangular parallelepiped. The housing 11 of the pressure test unit comprises: a main side 14, a first side 15 and a second side 16 detachably connected to the main side 14; the first through hole is provided on the first side face 15; the second through hole is provided on the second side surface 16. In the present embodiment, the main side surface 14 is a rectangular parallelepiped structure surrounded by four side surfaces, and the main side surface 14 is integral. The first side 15 and the second side 16 are opposite sides, so that the antenna is prevented from being too close to the pressure interface, and the test is not convenient.
Wherein, the detachable structure can include but is not limited to:
four vertex angles at two ends of the main side surface 14 are provided with threaded holes, and the first side surface 15 and the second side surface 16 are fixedly connected at two ends of the main side surface 14 through screws screwed into the threaded holes.
Or, four edges at two ends of the main side surface 14 are provided with buckles, and the first side surface 15 and the second side surface 16 are fixedly connected at two ends of the main side surface 14 through buckle components.
Or, threaded holes are formed in four top corners of one end of the main side surface 14, buckles are arranged on four sides of the other end of the main side surface 14, correspondingly, the first side surface 15 is fixedly connected to one end of the main side surface 14 through screws screwed into the threaded holes, and the second side surface 16 is fixedly connected to the other end of the main side surface 14 through buckle assemblies.
Alternatively, the second side 16 is fixedly connected to one end of the main side 14 by screwing a screw into a threaded hole, and the first side 15 is fixedly connected to the other end of the main side 14 by a snap assembly.
Referring to fig. 3, fig. 3 is a circuit connection diagram of a pressure testing unit according to another embodiment of the present application.
As shown in fig. 3, in the present embodiment, a display 31 connected to the signal processor 22 is further disposed on the housing 11 of the pressure testing unit; the signal processor 22 is also used to send the pressure data to the display 31 for display. A power supply 32 for supplying power to the pressure testing unit, a power switch 33 connected with the power supply 32, a charging jack 34 and a power indicator 35 are further arranged on the circuit board inside the shell 11.
Referring to fig. 4, fig. 4 is a schematic diagram of a second side of a pressure testing unit according to another embodiment of the present application.
As shown in fig. 4, the second side 16 of the housing 11 of the pressure testing unit is made of a transparent material, such as glass. The material of the remaining side surface may include, but is not limited to, an aluminum alloy material. The display 31 is arranged on the circuit board and close to the second side surface 16; the display screen of the display 31 is directed towards the second side 16. The power switch 33 and the charging jack 34 are disposed outside the housing 33; a charge indicator light 35 is disposed inside the housing 11 adjacent the second side 16. In the present embodiment, the second side surface 16 of the housing 11 is further provided with a third through hole and a fourth through hole; the power switch 33 extends out of the housing 11 through the third through hole, and the charging jack 34 extends out of the housing 11 through the fourth through hole.
In this embodiment, the display 31 may comprise a nixie tube, such as a red 0.8 inch nixie tube, or may comprise an LED display screen. The change of the pressure value can be visually observed by setting the display 31. In addition, by disposing the display 31 inside the housing 11, the display 31 can be effectively protected from damage to the display 31 due to the surrounding environment.
Wherein, the power supply 32 is connected with the pressure sensor 21, the signal processor 22, the wireless signal transmitter 23 and the antenna 13 on the circuit board to provide electric energy for the normal operation of the pressure testing unit. In the embodiment, the power supply 32 adopts a 2000mAh polymer rechargeable battery, so that the device is economical and environment-friendly.
The power switch 33 can turn on or off the operating power of the pressure test unit. The power switch 33 may include, but is not limited to, a toggle switch, a button switch, a boat switch. The power switch used in this embodiment is a toggle switch, model number T80-P-3. The power switch controls the power to be turned on, which is a mature technology in the prior art, and can be implemented by referring to the related technology, and details are not described here.
Charging jack 34 may include, but is not limited to, a USB jack, or a TYPE-C jack, or a crown spring jack, and in this embodiment charging jack 34 uses an airline socket GX 12-2. The charging of the power supply by using the charging jack is a mature technology in the prior art, and can be realized by referring to the related technology, which is not described herein again.
The principle of electric quantity display is to display voltage in real time, obtain different currents through a group of capacitors or resistors, and then display the currents on a light-emitting diode or an LED indicator lamp, so that voltage change can be visually seen. The power indicator 35 may include, but is not limited to, a light emitting diode or an LED indicator, and in this embodiment, four LED indicators are arranged in parallel. Specifically, when the four electric quantity indicator lamps are all on, the representative electric quantity is 100%; when the three electric quantity indicating lamps are turned on, the residual electric quantity is 80 percent; when the two electric quantity indicating lamps are turned on, the residual electric quantity is 50 percent; when one of the charge indicator lamps is turned on, it represents that the remaining charge reaches 20%. The principle of the electric quantity indicating lamp is that the voltage is displayed in real time, different currents are obtained through a group of capacitors or resistors and then displayed on the LED indicating lamp, and the voltage change can be visually seen. The related electric quantity indicating lamp is the existing mature technology, and can be realized by referring to the related technology, which is not described herein again.
Referring to fig. 5, fig. 5 is a connection diagram of a pressure tester according to another embodiment of the present application.
As shown in fig. 5, the pressure tester in the present embodiment includes a terminal device 24 and a plurality of pressure testing units 51 as described in any of the above embodiments.
The number of the pressure test units 51 can be set according to actual needs. Because the hydraulic equipment to be detected is large or small, when different hydraulic equipment is detected, the number of the pressure test units 51 required to be connected is different, sometimes only one pressure test unit 51 is used, but sometimes a plurality of pressure test units 51 can be used, the number of the pressure test units 51 required for one-time detection should be determined according to the type and the detection purpose of the detection equipment, and the number of the pressure test units 51 can be flexibly selected without influencing the detection result. In some embodiments, the number of the pressure testing units 51 in one pressure tester is not more than 40, so as to avoid exceeding the bearing capacity of the pressure tester.
Wherein, the terminal device 24 and the pressure testing unit 51 are connected by wireless, which may include but not limited to wifi connection, bluetooth connection, or 4G connection. Specifically, the connection between the pressure test unit 51 and the terminal device belongs to the existing mature technology, and stable transmission of data can be realized, and specific implementation can be realized by referring to the related technology, which is not described herein again.
Optionally, the terminal device 24 includes a mobile phone or a computer.
The specific implementation scheme of the pressure tester provided in the embodiment of the present application may refer to the embodiment of the pressure testing unit described in any of the above embodiments, and details are not described here.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily 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.
Although embodiments of the present application have been shown and described, it should be understood that the above embodiments are illustrative and not restrictive, and that any changes, modifications, substitutions and alterations that may be readily apparent to one of ordinary skill in the art without departing from the scope of the present application are intended to be covered by the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A pressure testing unit, comprising:
a housing; the shell is provided with a first through hole;
a circuit board located inside the housing; the circuit board is provided with a signal processor, a pressure sensor and a wireless signal emitter, wherein the pressure sensor and the wireless signal emitter are respectively connected with the signal processor; the pressure sensor has a pressure tap; one end of the pressure joint extends out of the shell through the first through hole and is used for connecting a position to be measured;
an antenna located on the housing; the antenna is connected with the wireless signal transmitter;
the pressure sensor is used for detecting pressure data of a position to be detected connected with the pressure joint and sending the pressure data to the signal processor; the signal processor is used for sending the pressure data to the wireless signal transmitter; the wireless signal transmitter is used for transmitting the pressure data to terminal equipment which is in wireless connection with the pressure testing unit in advance through the antenna.
2. The pressure test unit of claim 1, wherein the housing further defines a second through-hole;
one end of the antenna is located inside the shell, and the other end of the antenna extends out of the shell through the second through hole.
3. The pressure test unit of claim 2, wherein the housing comprises: the device comprises a main side surface, a first side surface and a second side surface, wherein the first side surface and the second side surface are detachably connected with the main side surface;
the first through hole is arranged on the first side surface;
the second through hole is disposed on the second side surface.
4. The pressure test unit of claim 3, wherein a display is further provided on the housing and connected to the signal processor;
the signal processor is also used for sending the pressure data to the display for display.
5. The pressure test unit of claim 4, wherein the second side is made of a transparent material; the display is arranged on the circuit board and is close to the second side face; the display screen of the display faces the second side.
6. A pressure testing unit according to claim 3, wherein a power supply is further provided on the circuit board for supplying power to the pressure testing unit.
7. The pressure test unit of claim 6, further comprising a power switch, a charging jack, and a charge indicator light connected to the power source; the power switch and the charging jack are arranged outside the shell; the electric quantity indicator lamp is arranged inside the shell close to the second side face.
8. Pressure testing unit according to claim 7, characterized in that the second side is further provided with a third through hole and a fourth through hole; the power switch extends out of the shell through the third through hole, and the charging jack extends out of the shell through the fourth through hole.
9. A pressure tester, characterized by comprising a terminal device and a plurality of pressure testing units according to any one of claims 1 to 8.
10. The pressure tester of claim 9, wherein the terminal device comprises a mobile phone or a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921282457.0U CN210108597U (en) | 2019-08-08 | 2019-08-08 | Pressure test unit and pressure tester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921282457.0U CN210108597U (en) | 2019-08-08 | 2019-08-08 | Pressure test unit and pressure tester |
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| CN210108597U true CN210108597U (en) | 2020-02-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285918A (en) * | 2019-08-08 | 2019-09-27 | 马明东 | Pressure sensing cell, pressure tester, pressure test display methods and terminal device |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285918A (en) * | 2019-08-08 | 2019-09-27 | 马明东 | Pressure sensing cell, pressure tester, pressure test display methods and terminal device |
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Effective date of registration: 20221008 Address after: 241000 Building 22, Wuhu General Navigation Innovation Park, Beihang, Wanlu Town, Wuhu City, Anhui Province Patentee after: Anhui Wuzi Dengke Aviation Technology Co.,Ltd. Address before: 114000 No. 25, floor 3, unit 2, building 352, Shengli North Road, Lishan District, Anshan City, Liaoning Province Patentee before: Ma Mingdong |