Detection instrument

Abstract

The utility model provides a detection instrument. The detection instrument comprises a front-end device, a decoder, a display and a power supply, wherein the front-end device is electrically connected with the vibration instrument and is used for sending a voltage detection signal to the vibration instrument and receiving a voltage attenuation signal returned by the vibration instrument; the signal input end of the decoder is electrically connected with the preposition device, and the decoder is used for decoding the voltage attenuation signal to adapt to the display; the output end of the decoder is electrically connected with the display and is used for displaying a decoded result on the display; and the power supply is electrically connected with the front-end device, the decoder and the display respectively. The detection instrument can detect the distance between the probe of the vibration instrument of the chemical equipment and the test part on the installation site, and data processing and display are carried out on the installation site, so that faster response time can be provided, delay in the data transmission process is avoided, and the detection efficiency is improved. Meanwhile, the problems of signal loss, interference and the like possibly occurring in the data transmission process are also reduced, and the reliability of the system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection, in particular to a detection instrument. BACKGROUND

[0002] In high-speed running chemical equipment, noise is an important indicator of the running state of the equipment. By monitoring the noise level of the equipment, it can be judged whether the equipment is running normally. Abnormal noise usually indicates that the equipment may have faults, such as bearing wear, structural looseness, etc. By analyzing the frequency, intensity and trend of the noise, the type and severity of the fault can be determined. For some chemical equipment, when an abnormality occurs in the chemical process, such as flow change, pressure fluctuation or material blockage, it may cause changes in equipment noise. Therefore, noise monitoring can also be used as an auxiliary means to judge the stability of the process.

[0003] In the related art, a vibration instrument is generally used to detect the noise signal of the chemical equipment. When the vibration instrument is installed, the distance between the instrument probe and the test site is of great significance. The distance between the probe and the test site will affect the strength of the electromagnetic signal. If the distance is too far, the signal may be severely attenuated, affecting the strength and quality of the measurement signal. Therefore, during installation, the distance needs to be calibrated to ensure that reliable data can be provided at different measurement distances, and the vibration of the chemical equipment can be more accurately reflected.

[0004] Currently, in the debugging process of the vibration instrument, the distance signal between the probe and the test site is transmitted to the central control system, and the central control system feeds back the distance to the on-site operator. The on-site operator adjusts the vibration instrument according to the distance information. However, this feedback method may cause signal loss, attenuation, interference and delay during signal transmission, affecting the accuracy of the vibration instrument debugging, especially when the network is unavailable, the debugging process cannot proceed normally. CONTENT OF THE INVENTION

[0005] Therefore, the present application provides a detection instrument to at least partially solve the above problems.

[0006] The application provides a detection instrument, which comprises a preamplifier, a decoder, a display and a power supply; wherein the preamplifier, the decoder, the display and the power supply are all installed on a debugging site to detect the distance between a probe of a vibration instrument of a chemical equipment and a test site; the preamplifier is electrically connected with the vibration instrument, used for sending a voltage detection signal to the vibration instrument, and receiving a voltage attenuation signal returned by the vibration instrument; wherein the voltage attenuation signal is determined by the probe of the vibration instrument based on a residual electromagnetic signal returned by the test site; the residual electromagnetic signal is determined after the test site attenuates an electromagnetic signal matched with the voltage detection signal; the electromagnetic signal matched with the voltage detection signal is determined by the probe of the vibration instrument after receiving the voltage detection signal; a signal input end of the decoder is electrically connected with the preamplifier, used for decoding the voltage attenuation signal to adapt the display; an output end of the decoder is electrically connected with the display, used for displaying the decoded result on the display; and the power supply is electrically connected with the preamplifier, the decoder and the display respectively.

[0007] Further, the detection instrument further comprises a controller; a signal input end of the controller is electrically connected with a signal output end of the decoder; a signal output end of the controller is electrically connected with the display; the controller is used for converting the voltage attenuation signal into the distance between the probe and the test site, and sending the distance to the display for display.

[0008] Further, the detection instrument further comprises a residual power detection unit; the residual power detection unit is connected between the power supply and the display; the residual power detection unit is used for detecting the residual power of the power supply, and sending the residual power to the display for display.

[0009] Further, in the detection instrument, the power supply is a rechargeable battery.

[0010] Further, the detection instrument further comprises a shell and a cover plate; the cover plate covers the shell, a sealing structure is arranged between the shell and the cover plate; the preamplifier, the decoder and the power supply are all arranged in the shell, and the display is arranged on an outer surface of the cover plate.

[0011] Further, in the detection instrument, the cover plate is provided with a preamplifier window corresponding to the preamplifier, used for exposing the preamplifier.

[0012] Further, the detection instrument further comprises a switch; wherein the switch is arranged on the cover plate, and the switch is connected in series between the power supply and the preamplifier.

[0013] Further, the detection instrument described above further comprises a magnet, wherein the magnet is arranged on the shell and is used to be adsorbed on the chemical equipment by magnetic force.

[0014] Further, the detection instrument described above, the shell is 3D printed and integrally formed.

[0015] As can be seen from the above solutions, since the detection instrument of the embodiment of the present application can detect the distance between the probe and the test site of the vibration instrument of the chemical equipment on the installation site, because data processing and display are performed on the installation site, a faster response time can be provided, and the delay in the data transmission process is avoided, and at the same time, problems such as signal loss and interference that may occur in the data transmission process are reduced, and the reliability of the system is improved. Since the embodiment of the present application does not need to transmit the distance to the central control system, the need for additional communication equipment and remote server hardware is also reduced, thereby reducing the cost. In addition, the embodiment of the present application does not depend on network connection, and can operate normally even in the case where the network is unavailable. BRIEF DESCRIPTION OF DRAWINGS

[0016] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, so that the above and other features and advantages of the present application can be more clearly understood by those of ordinary skill in the art. In the drawings:

[0017] Figure 1 A circuit structure connection schematic diagram of a detection instrument according to the embodiment of the present application is provided;

[0018] Figure 2 A structure schematic diagram of a detection instrument according to the embodiment of the present application is provided;

[0019] In the drawings, the reference signs are as follows:

[0020] 10, detection instrument; 20, vibration instrument; 11, preamplifier; 12, decoder; 13, display; 14, power supply; 15, switch; 31, shell; 32, cover plate; 321, display mounting port; 322, switch mounting port; 323, preamplifier window. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the following embodiments will further illustrate the present application in detail.

[0022] Reference is made to Figure 1The embodiment of the present application provides a detection instrument 10. The detection instrument 10 comprises a preamplifier 11, a decoder 12, a display 13 and a power supply 14. Wherein, the preamplifier 11, the decoder 12, the display 13 and the power supply 14 are installed on a debugging site, to detect the distance between a probe of a vibration instrument 20 of a chemical equipment and a test site on the debugging site. The preamplifier 11 is electrically connected with the vibration instrument 20, for sending a voltage detection signal to the vibration instrument 20, and receiving a voltage attenuation signal returned by the vibration instrument 20. Wherein, the voltage attenuation signal is determined by the probe of the vibration instrument 20 based on a residual electromagnetic signal returned by the test site; the residual electromagnetic signal is determined after the test site attenuates an electromagnetic signal matched with the voltage detection signal; the electromagnetic signal matched with the voltage detection signal is determined by the probe of the vibration instrument after receiving the voltage detection signal.

[0023] The signal input end of the decoder 12 is electrically connected with the preamplifier 11, for decoding the voltage attenuation signal to adapt the display 13; the output end of the decoder 12 is electrically connected with the display 13, for displaying the decoded result on the display 13; the power supply 14 is electrically connected with the preamplifier 11, the decoder 12 and the display 13 respectively.

[0024] The detection instrument 10 of the embodiment of the present application can be arranged on the debugging site, and the preamplifier 11 is connected with the vibration instrument of the chemical equipment on the debugging site, to detect the distance between the probe of the vibration instrument and the test site. Because data processing and display are all performed on the debugging site, faster response time can be provided, the delay in the data transmission process is avoided, and problems such as signal loss and interference in the data transmission process are reduced, so that the reliability of the system is improved. Because the distance does not need to be transmitted to the central control system, the demand for additional communication equipment and remote server hardware is also reduced, so that the cost is reduced. In addition, the embodiment of the present application does not depend on network connection, and can be normally performed even in the case that the network is unavailable.

[0025] The technical scheme of the embodiment of the present application will be described in detail below with reference to the drawings.

[0026] Referring to Figure 1 The detection instrument 10 according to the embodiment of the present application comprises the preamplifier 11, the decoder 12, the display 13 and the power supply 14.

[0027] The preamplifier 11 is electrically connected with the vibration instrument 20, for sending a voltage detection signal to the vibration instrument 20, and receiving a voltage attenuation signal returned by the vibration instrument 20.

[0028] When being specifically implemented, the preamplifier 11 can be provided with a connecting line, for example, a plug-in connecting line, and the like, and the preamplifier 11 is quickly connected or disconnected with the vibration instrument 20 through the connecting line.

[0029] The working principle of the detection instrument 10 in the embodiment of the present application is as follows: the preamplifier 11 sends a voltage detection signal (for example, 24V) to the vibration instrument 20, the vibration instrument 20 receives the voltage detection signal and transmits it to the probe, the probe is provided with a coil, the coil converts the voltage detection signal into an electromagnetic signal and sends it to the test site of the chemical equipment, the test site returns a residual electromagnetic signal after receiving the electromagnetic signal, the probe receives the voltage attenuation signal (for example, 10V) converted by the residual electromagnetic signal, and the vibration instrument 20 transmits the voltage attenuation signal to the preamplifier 11. Since the electromagnetic signal attenuates in the transmission process between the probe and the test site, the distance between the probe and the test site can be determined according to the voltage attenuation signal.

[0030] In a specific implementation, the preamplifier 11 can be provided with an amplifier and a filter, the amplifier is used to amplify the voltage attenuation signal for subsequent processing, and the filter is used to remove the noise in the voltage detection signal and the voltage attenuation signal to ensure the purity of the signal. In an example, the preamplifier 11 can also include a signal modulator to modulate the voltage detection signal to a frequency suitable for the probe to receive.

[0031] It can be understood that the preamplifier 11 should also be provided with a communication interface, for example, RS485, RS232, etc., to facilitate data exchange with the vibration instrument 20 and the decoder 12.

[0032] The signal input end of the decoder 12 is electrically connected with the preamplifier 11, for decoding the voltage attenuation signal to adapt to the display 13; the output end of the decoder 12 is electrically connected with the display 13, for displaying the decoded result on the display 13.

[0033] In a specific implementation, the decoder 12 can include a signal processor, a voltage converter, etc., the signal processor is used to digitally process the received voltage attenuation signal, and the voltage converter converts the voltage signal into a voltage signal suitable for the display. The display can be a liquid crystal display screen, etc.

[0034] In some embodiments, a controller (not shown in the figure) can also be included. The signal input end of the controller is electrically connected with the signal output end of the decoder 12; the signal output end of the controller is electrically connected with the display 13; the controller is used to convert the voltage attenuation signal into the distance between the probe and the test site and send it to the display 13 for display.

[0035] In the embodiment, the controller can convert the voltage attenuation signal into the distance between the probe and the test site in real time and intuitively display it on the display 13, so that the field test personnel do not need to obtain the distance value through other auxiliary tools or calculation methods, which greatly improves the test efficiency.

[0036] In some embodiments, a remaining power detection unit (not shown in the figure) is further included. The remaining power detection unit is connected between the power supply 14 and the display 13, and is configured to detect the remaining power of the power supply 14 and send the remaining power to the display 13 for display.

[0037] In one specific implementation, the remaining power detection unit can include a voltage dividing circuit and a voltage comparator. The voltage dividing circuit is composed of a plurality of resistors and is configured to reduce the output voltage of the power supply 14 to a range suitable for detection by the comparator. The voltage comparator compares the divided voltage with a preset threshold voltage to determine the power state of the power supply 14.

[0038] It should be noted that the threshold voltage can be determined according to actual conditions, and the present embodiment does not make any limitation here.

[0039] In one example, the power supply 14 is a rechargeable battery, such as a lithium battery.

[0040] The present embodiment can provide early warning of insufficient power by monitoring the remaining power of the power supply 14 in real time, thereby preventing the detection instrument 10 from suddenly losing power due to power depletion during a critical test process and ensuring the continuity and accuracy of test data.

[0041] Referring to Figure 2 In some embodiments, a housing 31 and a cover plate 32 are further included. The cover plate 32 is arranged on the housing 31, and a sealing structure is arranged between the housing 31 and the cover plate 32. The housing 31 and the cover plate 32 enclose a space, and the front end processor 11, the decoder 12, and the power supply 14 are arranged in the space 1, and the display 13 is arranged on the outer surface of the cover plate 32.

[0042] In one specific implementation, the housing 31 can be made of engineering plastic or metal material (such as aluminum alloy, stainless steel, etc.), so as to ensure that it has good strength, toughness, and corrosion resistance. The housing 31 and the cover plate 32 meet a specific protection level (such as IP65, IP67, etc.) to protect the internal components from dust, water, etc. A sealing structure, such as an O-ring, a gasket, or a sealant, etc., can be arranged between the housing 31 and the cover plate 32 to ensure that the environment inside the housing 31 is isolated from the outside. In one example, the housing 31 is integrally formed by 3D printing.

[0043] The cover plate 32 is provided with a display mounting opening 321, which is matched in size and shape with the display 13. The display 13 is mounted in the display mounting opening 321, which is convenient for the tester to observe.

[0044] In one example, the cover plate 32 is provided with a preamplifier window 323 corresponding to the position of the preamplifier 11, which is adapted to the size and shape of the preamplifier 11 to expose the preamplifier 11 and facilitate the connection of the preamplifier 11 with the vibration meter 20. In addition, the preamplifier 11 can also be replaced according to the model of the probe to adapt the preamplifier 11 to the probe.

[0045] In some embodiments, further comprising a switch 15. Wherein the switch 15 is arranged on the cover plate 32, and the switch 15 is connected in series between the power supply 14 and the preamplifier 11.

[0046] The main function of the switch 15 is to control the on-off of the power supply 14, that is, to control the working state of the detection meter 10. Through the switch 15, the user can manually turn on or off the detection meter 10.

[0047] The switch 15 can be made of wear-resistant, high-temperature-resistant plastic or metal to ensure that it is not easily damaged during long-term use. The switch 15 can be marked with "on / off" or other indication marks, such as indicator lights indicating on-off, to help users quickly identify the state of the switch.

[0048] The switch 15 is installed in the switch mounting hole 322 of the cover plate 32. In this embodiment, the switch 15 is installed at a position on the cover plate 32 that is easy to operate, so that the user can easily control the power supply 14 without opening the shell 31.

[0049] In some embodiments, further comprising a magnet (not shown in the figure). The magnet is arranged on the shell 31 and is used to be adsorbed to the chemical equipment by magnetic force.

[0050] In specific implementation, the magnet can be square, circular, annular, etc., and the shell 31 is provided with a clamping port (not shown in the figure) on the outer surface, which is adapted to the shape and size of the magnet. The magnet can be directly clamped in the clamping port, or can be installed in the clamping port by means of buckles, screws, etc., as long as the magnet is firmly fixed on the shell 31 and will not fall off during use.

[0051] The operator can stably adsorb the detection meter 10 to the surface of the chemical equipment through the magnet in this embodiment, and the arrangement of the magnet enhances the stability and convenience of the detection meter 10 during use.

[0052] In summary, the detection meter 10 of the embodiment of the present application can detect the distance between the probe and the test site of the vibration meter of the chemical equipment on the installation site, and because data processing and display are performed on the installation site, it can provide faster response time, avoid delay in data transmission process, and reduce problems such as signal loss and interference that may occur in data transmission process, thereby improving the reliability of the system.

[0053] The above merely provides the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A detection instrument, characterized in that: include: A preamplifier (11), a decoder (12), a display (13) and a power supply (14); wherein the preamplifier (11), the decoder (12), the display (13) and the power supply (14) are all installed at a commissioning site to detect the distance between a probe of a vibration meter (20) of chemical equipment and a test part at the commissioning site; The preamplifier (11) is electrically connected to the vibration meter (20) and is used to send a voltage detection signal to the vibration meter (20), and to receive a voltage attenuation signal transmitted back by the vibration meter (20); wherein the voltage attenuation signal is determined by the probe of the vibration meter (20) based on the residual electromagnetic signal transmitted back by the test part; the residual electromagnetic signal is determined after the test part attenuates the electromagnetic signal matching the voltage detection signal; the electromagnetic signal matching the voltage detection signal is determined by the probe of the vibration meter (20) after receiving the voltage detection signal. The signal input end of the decoder (12) is electrically connected to the preamplifier (11) and is used to decode the voltage attenuation signal to adapt to the display; The output end of the decoder (12) is electrically connected to the display (13) for displaying the decoded result on the display (13); and the power supply (14) is electrically connected to the preamplifier (11), the decoder (12), and the display (13) respectively.

2. The detection instrument according to claim 1, characterized in that: Also includes: Controller; The signal input terminal of the controller is electrically connected to the signal output terminal of the decoder (12); The signal output terminal of the controller is electrically connected to the display (13); The controller is used to convert the voltage attenuation signal into the distance between the probe and the test site, and send it to the display (13) for display.

3. The detection instrument according to claim 2, characterized in that: Also includes: Remaining power detection unit; The remaining power detection unit is connected between the power supply (14) and the display (13); The remaining power detection unit is used to detect the remaining power of the power source (14) and send the remaining power to the display (13) for display.

4. The detection instrument according to claim 3, characterized in that: The power source (14) is a rechargeable battery.

5. The detection instrument according to claim 1, characterized in that: Also includes: a housing (31) and a cover plate (32); The cover plate (32) is covered on the shell (31), and a sealing structure is provided between the shell (31) and the cover plate (32); The preamplifier (11), the decoder (12) and the power supply (14) are all arranged in the housing (31), and the display (13) is arranged on the outer surface of the cover plate (32).

6. The detection instrument according to claim 5, characterized in that: The cover plate (32) is provided with a preamplifier window (323) for exposing the preamplifier (11) at a position corresponding to the preamplifier (11).

7. The detection instrument according to claim 5, characterized in that: Also includes: A switch (15); wherein the switch (15) is provided on the cover plate (32), and the switch (15) is connected in series between the power supply (14) and the preamplifier (11).

8. The detection instrument according to claim 5, characterized in that: Also includes: magnet; The magnet is arranged on the housing (31) and is used for being adsorbed on the chemical equipment through magnetic attraction.

9. The detection instrument according to claim 5, characterized in that: The housing (31) is integrally formed by 3D printing.

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