Explosion-proof mechanical state transmitter

Abstract

The invention discloses an explosion-proof mechanical state transmitter which comprises a transmitter shell, a positioning solenoid is fixedly connected to the inner wall of an inner cavity of the transmitter shell, a PCB is arranged in the transmitter shell, the PCB is fixedly installed on the positioning solenoid through copper column screws, a display screen is welded to the PCB, and the display screen is fixedly connected with the transmitter shell. A mounting cover is mounted on the transmitter shell; the heat dissipation detection mechanism is located in the transmitter shell and is fixedly connected with the transmitter shell; according to the invention, the display screen is arranged on the PCB, so that the detected data can be better displayed, the toughened glass is additionally arranged on the mounting cover, and the explosion-proof threads are arranged between the mounting cover and the shell, so that the explosion-proof requirement is met.

Description

Technical Field

[0001] The invention relates to the field of transmitters, and in particular to an explosion-proof mechanical state transmitter. Background Art

[0002] Explosion-proof mechanical state transmitters are often used in places where monitoring and control are required in explosive environments. They are designed to prevent ignition sources and maintain safety performance in situations where flammable gases, vapors, liquids or dusts may be present.

[0003] Key features of these transmitters include:

[0004] Explosion-proof performance: The design complies with international explosion-proof standards, such as ATEX, IECEx, etc., and can prevent any electrical or mechanical factors in the equipment itself or the external environment from causing sparks or high temperatures, thereby avoiding explosions.

[0005] Mechanical condition monitoring: The transmitter can monitor and transmit the status information of mechanical equipment, such as switch status, position information, etc. This information can be used for remote monitoring, fault diagnosis and automatic control system of equipment.

[0006] Safety performance: In addition to explosion-proof performance, it also needs to meet the conventional requirements of industrial equipment, such as high temperature resistance, corrosion resistance, vibration resistance, etc., to ensure long-term stable operation in harsh working environments.

[0007] Scope of application: It can be used in equipment and process control in hazardous environments such as chemical industry, petroleum, natural gas mining, mining, etc. to ensure the safety of operators and equipment.

[0008] The transmitter will be connected to a cable lock. However, the installation of the cable lock will become loose over time. The loosening of the cable lock will pull the connected wires. Long-term pulling will cause the connection between the wires and the circuit board to fall off, which is not conducive to use. Summary of the invention

[0009] The purpose of the present invention is to provide an explosion-proof mechanical state transmitter to solve the above technical problems.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] An explosion-proof mechanical state transmitter comprises a transmitter housing, a positioning screw is fixedly connected to the inner wall of the inner cavity of the transmitter housing, a PCB circuit board is arranged inside the transmitter housing, and the PCB circuit board is fixedly mounted on the positioning screw by copper column screws;

[0012] A display screen is welded on the PCB circuit board, and the display screen is used to observe changes in on-site data.

[0013] Preferably, the heat dissipation detection mechanism is located inside the transmitter housing and fixedly connected to the transmitter housing, and the heat dissipation detection mechanism is used to detect the temperature inside the transmitter housing.

[0014] Preferably, the positioning mechanism is located at the bottom of the transmitter housing and is fixedly connected to the transmitter housing, and the heat dissipation detection mechanism is used to drive the positioning mechanism to operate.

[0015] Preferably, four connectors are fixedly arranged on the PCB circuit board.

[0016] Preferably, a mounting cover is installed on the transmitter housing, and a tempered glass is inlaid on the mounting cover close to the display screen;

[0017] An explosion-proof thread is used between the installation cover and the transmitter housing.

[0018] Preferably, a cable lock is fixedly provided on the outer side of the transmitter housing, and the cable lock is communicated with the transmitter housing;

[0019] The PCB circuit board completes data collection and performs FFT analysis and processing through a cable lock, and uploads it to a repeater and a receiver wirelessly. The receiver then transmits it to an industrial computer through a serial port line to provide the user with the required device status information.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention can better display the inspected data by installing a display screen on a PCB circuit board, and the mounting cover is equipped with tempered glass, and a flameproof thread is used between the mounting cover and the housing to meet explosion-proof requirements.

[0022] 2. An air horn can be installed on the transmitter housing, and then the first rotating shaft can be used to store force for the coil spring, and the limit disk can be used to limit the position. When the cable lock is loose, the bimetallic strip will move away from the limit disk, thereby canceling the limit of the coil spring. In this way, the coil spring will cause the fan blades to rotate, thereby effectively filling air into the air horn, causing the air horn to make a sound, which serves as a reminder. When the temperature inside the transmitter housing is too high, the bimetallic strip will bend, which will also cancel the limit on the limit disk, which can also make the air horn make a sound, thereby serving as a reminder.

[0023] 3. When the first rotating shaft of the present invention is used to store force for the coil spring, the second suction cup can also be moved downward, so that the first suction cup and the second suction cup will form two adsorption cavities, which can better achieve the adsorption effect. In the process of the second suction cup moving downward, the support ring will also press down the first suction cup, which can better stabilize the suction force. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 A schematic diagram showing a state of the transmitter of the present invention;

[0026] Figure 3 The schematic diagram of the state of the transmitter display 2 of the present invention

[0027] Figure 4 It is a schematic diagram of the internal structure of the transmitter housing of the present invention;

[0028] Figure 5 for Figure 4 A magnified schematic diagram of part A;

[0029] Figure 6 It is a schematic diagram of the connection between the PCB circuit board and the transmitter body of the present invention;

[0030] Figure 7 It is a schematic diagram of the internal structure of the drive box of the present invention;

[0031] Figure 8 It is a schematic diagram of the connection between the second rotating shaft and the rotating ring of the present invention;

[0032] Fig. 9 It is a schematic diagram of the connection between the first suction cup and the second suction cup of the present invention;

[0033] Fig.10 It is a schematic diagram of the internal structure of the threaded pipe of the present invention;

[0034] Fig.11 It is a schematic diagram of the internal structure of the driving tube of the present invention.

[0035] 1. Transmitter housing; 2. First rotating shaft; 3. Mounting cover; 4. Display screen; 5. First suction cup; 6. Cable lock; 7. Drive box; 8. Fan blade; 9. Limiting plate; 10. Bimetallic strip; 11. Connecting piece; 12. Anti-slip ring; 13. First driving wheel; 14. Second driving wheel; 15. Rotating ring; 16. PCB circuit board; 17. Mounting piece; 18. Connecting column; 19. First bevel gear; 20. Coil spring; 21. Second rotating shaft; 22. Third rotating shaft; 23. Connecting plate; 24. Fixed plate; 25. Toggle plate; 26. Reciprocating screw rod; 27. Threaded tube; 28. Support cover; 29. ​​Support ring; 30. Drive tube; 33. Second suction cup; 34. Sliding rod; 35. Infusion tube; 36. Piston plate; 37. Spring; 38. Auxiliary rod; 39. Extrusion column. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0037] The specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0038] Embodiment 1:

[0039] like Figure 1-11 As shown,

[0040] An explosion-proof mechanical state transmitter includes a transmitter housing 1, characterized in that: a positioning screw is fixedly connected to the inner wall of the inner cavity of the transmitter housing 1, a PCB circuit board 16 is arranged inside the transmitter housing 1, and the PCB circuit board 16 is fixedly mounted on the positioning screw by copper column screws;

[0041] A display screen 4 is welded on the PCB circuit board 16 , and the display screen 4 is used to observe changes in on-site data.

[0042] The heat dissipation detection mechanism is located inside the transmitter housing 1 and is fixedly connected to the transmitter housing 1 . The heat dissipation detection mechanism is used to detect the temperature inside the transmitter housing 1 .

[0043] The positioning mechanism is located at the bottom of the transmitter housing 1 and is fixedly connected to the transmitter housing 1. The heat dissipation detection mechanism is used to drive the positioning mechanism to operate.

[0044] Four connectors are fixedly arranged on the PCB circuit board 16 .

[0045] The transmitter housing 1 is provided with a mounting cover 3, and the mounting cover 3 near the display screen 4 is inlaid with tempered glass;

[0046] An explosion-proof thread is used between the mounting cover 3 and the transmitter housing 1 .

[0047] A cable lock 6 is fixedly provided on the outer side of the transmitter housing 1, and the cable lock 2 is communicated with the transmitter housing 1;

[0048] The PCB circuit board 16 completes data acquisition and performs FFT analysis and processing through the cable lock 6, and uploads it to the repeater and receiver in a wireless manner. The receiver then transmits it to the industrial computer through the serial port line to provide the user with the required device status information;

[0049] Four connectors are provided on the PCB circuit board 16, so that a transmitter needs to be equipped with two sensors at most, and the sensor line uses a four-core wire. A transmitter needs to be equipped with four sensors at most, and the sensor line uses an eight-core wire. In another way, the transmitter can be equipped with four cable locks 6, and a four-core wire is needed. At this time, this design solves the problem that most transmitters can only be equipped with two sensors at most. By setting four connectors, the number of sensor contacts can be increased, thereby improving the measurement of the measuring points, which brings convenience to the use of the transmitter. Multi-channel 1-4 channels; multi-parameter vibration, temperature, envelope and external 4-20mA standard signal (when this signal is externally connected, data can be uploaded wirelessly and other multi-parameter access can be supported); local data display, wireless transmission, easy disassembly and installation, easy battery replacement, etc. At the same time: multi-channel refers to one to four channels, not just four channels. And each channel supports the simultaneous acquisition of parameters such as vibration and temperature;

[0050] The heat dissipation detection mechanism is located inside the transmitter housing 1 and is fixedly connected to the transmitter housing 1. The heat dissipation detection mechanism is used to detect the temperature inside the transmitter housing 1.

[0051] The positioning mechanism is located at the bottom of the transmitter housing 1 and is fixedly connected to the transmitter housing 1. The heat dissipation detection mechanism is used to drive the positioning mechanism to operate.

[0052] The heat dissipation detection mechanism includes a mounting member 17, which is located inside the transmitter housing 1 and is fixedly connected to the transmitter housing 1;

[0053] The mounting member 17 is fixedly connected with a connecting column 18 , the connecting column 18 is fixedly connected with a driving box 7 , a second rotating shaft 21 is rotatably connected with the driving box 7 , a coil spring 20 is installed inside the driving box 7 , and the coil spring 20 is connected to the second rotating shaft 21 .

[0054] The heat dissipation detection mechanism also includes a first rotating shaft 2, which is rotatably connected to the transmitter housing 1, and a first bevel gear 19 is fixedly connected to the first rotating shaft 2, a second bevel gear is meshed on the first bevel gear 19, and the second bevel gear is fixedly connected to the second rotating shaft 21, and a fan blade 8 is fixedly connected to the first rotating shaft 2.

[0055] The heat dissipation detection mechanism further includes a first driving wheel 13, and the first driving wheel 13 is fixedly connected to the first rotating shaft 2;

[0056] The first driving wheel 13 is connected to the second driving wheel 14 through a connecting belt, a rotating ring 15 is fixedly connected to the bottom of the second driving wheel 14, the rotating ring 15 is rotatably connected to the transmitter housing 1, a tooth groove is penetrated through the second driving wheel 14, a fixed disk 24 is arranged inside the tooth groove, a paddle piece 25 is fixedly installed on the top of the fixed disk 24, a connecting plate 23 is fixedly connected to the top of the second driving wheel 14, a third rotating shaft 22 is fixedly connected to the connecting plate 23, and a limiting disk 9 is fixedly connected to the third rotating shaft 22.

[0057] A cable lock 6 is plugged into the transmitter body, an anti-slip ring 12 is fixedly connected to the cable lock 6, a connector 11 is fixedly connected to the anti-slip ring 12, a bimetallic strip 10 is fixedly connected to the connector 11, and the bimetallic strip 10 is located inside a groove on the limit plate 9.

[0058] By rotating the first rotating shaft 2, the first rotating shaft 2 will drive the second rotating shaft 21 to rotate through the first bevel gear 19 and the second bevel gear, and the second rotating shaft 21 drives the coil spring 20 to rotate and store force;

[0059] When the coil spring 20 is charged, the cable lock 6 is fixed, so that the bimetal plate will limit the limit plate 9, so that the coil spring 20 cannot be released;

[0060] When the cable lock 6 becomes loose and loosens to a certain extent, the bimetallic strip 10 will be separated from the limit plate 9, so that the limit plate 9 will lose its limit position, so that the coil spring 20 will drive the second rotating shaft 21 to rotate, and the second rotating shaft 21 will drive the fan blade 8 to rotate, and the second fan blade 8 will drive the surrounding air to flow and gather the air, so that it is blown to the air horn. Since the air horn is filled with wind, it will make a sound, which can effectively serve as a reminder.

[0061] When the transmitter comes into use;

[0062] Press the power switch on the transmitter to enter the working state. The display screen will first display the basic parameters of the transmitter, such as Figure 2 After 7 seconds, it will jump to the detection data display interface, as shown in Figure 3 As shown;

[0063] A indicates the address of the upper-level device, B indicates the frequency band of the upper-level device, C indicates the address of the transmitter, and D indicates the vibration sensitivity.

[0064] 1# and 2# represent different channel data, and each channel displays the following values: envelope, vibration speed, temperature (from top to bottom);

[0065] The transmitter wirelessly uploads the collected vibration velocity, temperature, and envelope (envelope version) (the factory default is 10 minutes of monitoring and 1 hour of uploading, and the data sampling time interval and upload time interval can be set according to actual needs).

[0066] Embodiment 2:

[0067] like Figure 1-11 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that:

[0068] When the transmitter housing 1 is continuously used, the temperature inside the transmitter housing 1 will continue to rise. When the temperature exceeds a certain critical value, the bimetallic strip 10 will bend, so that the bimetallic strip 10 will also continuously limit the limit plate 9.

[0069] In this way, the fan blades 8 will fill the air toward the air horn, which can effectively serve as a reminder, thereby effectively monitoring the temperature and whether the cable lock 6 is loose.

[0070] Embodiment 3:

[0071] like Figure 1-9 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that:

[0072] The sensor is connected to the cable lock 6. The sensor is installed on the equipment bearing by a strong magnetic seat + adhesive method. The installation surface must have a φ25mm plane for firm adsorption. Before installation, use acetone or other cleaning agents to clean the oil stains on the installation surface. For the measured surface of non-ferromagnetic materials, M6 bolts are used for fixing. The installation surface must have a φ25mm plane and be drilled and tapped.

[0073] The positioning mechanism includes a support cover 28, and the support cover 28 is fixedly connected to the transmitter housing 1;

[0074] The support cover 28 is rotatably connected with a reciprocating screw rod 26, which is fixedly connected to the fixed plate 24. The support cover 28 is internally slidably connected with a threaded tube 27, which is fixedly connected with a slider, which is slidably connected to the support cover 28.

[0075] A second suction cup 33 is fixedly connected to the bottom of the threaded tube 27 .

[0076] The positioning mechanism further includes a first suction cup 5 , which is fixedly connected to the support cover 28 , and a support ring 29 is fixedly connected to the first suction cup 5 .

[0077] The positioning mechanism also includes a drive tube 30, which is fixedly connected to the support cover 28;

[0078] An auxiliary rod 38 is fixedly connected inside the driving tube 30, and an extrusion column 39 is slidably connected to the auxiliary rod 38. The extrusion column 39 is connected to the driving tube 30 through a spring 37, and a support ring 29 is fixedly connected to the bottom of the extrusion column 39;

[0079] The driving tube 30 is fixedly connected with a liquid infusion tube 35, and the liquid infusion tube 35 extends into the interior of the threaded tube 27;

[0080] A piston plate 36 is slidably connected inside the threaded tube 27 , a slide rod 34 is fixedly connected to the piston plate 36 , the slide rod 34 is slidably connected to the threaded tube 27 , and the slide rod 34 is fixedly connected to the support cover 28 .

[0081] When the first rotating shaft 2 rotates in the opposite direction, the first rotating shaft 2 will also drive the first driving wheel 13 to rotate, the first driving wheel 13 will drive the second driving wheel 14 to rotate, the second driving wheel 14 will drive the shifting piece 25 to rotate, the shifting piece 25 will drive the reciprocating screw rod 26 to rotate, the reciprocating screw rod 26 will drive the threaded tube 27 to move downward, the threaded tube 27 will move downward and drive the second suction cup 33 to move downward, so that the second suction cup 33 can be well adsorbed with the first suction cup 5;

[0082] When the threaded tube 27 moves downward, the liquid in the threaded tube 27 will be squeezed by the piston plate 36 and transported to the inside of the driving tube 30. With the help of water pressure, the support ring 29 can move downward, so that the support ring 29 can squeeze the first suction cup 5, which can promote better adsorption of the first suction cup 5.

[0083] Since the first rotating shaft 2 needs to rotate continuously to store force for the coil spring 20 , the above steps will be repeated continuously. When the coil spring 20 is almost finished storing force, suitable positions can be selected for the first suction cup 5 and the second suction cup 33 .

[0084] Embodiment 4:

[0085] like Figure 1-11 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that:

[0086] S1: After the transmitter is installed, it is started and the sensor begins to collect vibration and temperature data of chemical plant equipment.

[0087] S2: Data is transmitted to the cloud server through the repeater.

[0088] S3: The emas1000 system on the computer can display the vibration and temperature values ​​of the measuring point.

[0089] S4: If the data is abnormal, the system will issue an alarm.

[0090] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An explosion-proof mechanical state transmitter, comprising a transmitter housing (1), characterized in that: A positioning screw is fixedly connected to the inner wall of the inner cavity of the transmitter housing (1), a PCB circuit board (16) is arranged inside the transmitter housing (1), and the PCB circuit board (16) is fixedly mounted on the positioning screw by means of copper column screws; A display screen (4) is welded on the PCB circuit board (16), and the display screen (4) is used to observe changes in on-site data.

2. The explosion-proof mechanical state transmitter according to claim 1, characterized in that: A heat dissipation detection mechanism is located inside the transmitter housing (1) and is fixedly connected to the transmitter housing (1), and the heat dissipation detection mechanism is used to detect the temperature inside the transmitter housing (1).

3. The explosion-proof mechanical state transmitter according to claim 2, characterized in that: The positioning mechanism is located at the bottom of the transmitter housing (1) and is fixedly connected to the transmitter housing (1), and the heat dissipation detection mechanism is used to drive the positioning mechanism to operate.

4. The explosion-proof mechanical state transmitter according to claim 3 is characterized in that: Four connectors are fixedly arranged on the PCB circuit board (16).

5. The explosion-proof mechanical state transmitter according to claim 4, characterized in that: The transmitter housing (1) is provided with a mounting cover (3) at the rear, and the mounting cover (3) on the side close to the display screen (4) is inlaid with tempered glass; An explosion-proof thread is used between the installation cover (3) and the transmitter housing (1).

6. The explosion-proof mechanical state transmitter according to claim 4, characterized in that: A cable lock (6) is fixedly provided on the outer side surface of the transmitter housing (1), and the cable lock (2) is arranged in communication with the transmitter housing (1); The PCB circuit board (16) completes data collection and performs FFT analysis and processing through the cable lock (6), and uploads the data to the repeater and the receiver in a wireless manner. The receiver then transmits the data to the industrial computer through a serial port line to provide the user with the required device status information.

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