Gas ultrasonic flowmeter dry label device convenient to operate

Abstract

The utility model relates to the technical field of dry labels of gas ultrasonic flow meters, and discloses a dry label device of a gas ultrasonic flow meter, which is convenient to operate and comprises a body. According to the utility model, the sliding block which can be pushed and pulled is matched with the limiting slideway with the positioning pit to position the protection plate on the side walls of the left clamping plate and the right clamping plate, so that the protection plate can shield the side wall of the flowmeter which is subjected to dry labeling; the flowmeter is prevented from being crushed, disintegrated and splashed due to pressure during dry labeling, so that an operator is prevented from being hurt; the deformation strip which can be bent and deformed is arranged, so that the airflow sensors are matched with the outer wall of the flowmeter which is being subjected to dry labeling, and warning of multiple point positions can be performed when it is sensed that multiple positions outside the flowmeter are subjected to vacuum pressure reduction or air leakage occurs when air is introduced, and airflow occurs; therefore, an operator can be helped to find a gas leakage point in time.

Description

Technical Field

[0001] The utility model relates to the technical field of dry calibration of gas ultrasonic flowmeters, in particular to a dry calibration device of a gas ultrasonic flowmeter which is convenient to operate. Background Art

[0002] When performing dry calibration of gas ultrasonic flowmeters, a special dry calibration device is usually required. This device usually includes the following main components: dry air or other standard gas supply device: used to provide a stable standard gas flow rate and ensure the dryness and purity of the gas to avoid affecting the flowmeter; pressure control device: used to control the pressure of the standard gas to ensure that the gas pressure is stable and meets the requirements during the calibration process; temperature control device: used to control the temperature of the standard gas to ensure that the gas temperature is stable and meets the requirements during the calibration process, flowmeter calibration table: used to install the flowmeter and perform calibration operations, usually including brackets, connecting pipes, reading displays and other components, data recording system: used to record the flow, pressure, temperature and other parameters of the standard gas and the readings of the flowmeter for subsequent analysis and comparison. These components together constitute the dry calibration device of the gas ultrasonic flowmeter to ensure the accuracy and reliability of the calibration process;

[0003] The existing gas ultrasonic flowmeter with easy operation is composed of a flowmeter placement table, a flowmeter clamping device, a meter body lifting mechanism, a nitrogen cylinder, a methane cylinder, a high-precision pressure transmitter, a temperature transmitter, a vacuum gas replacement device, a combustible gas exhaust combustion device, a computer data processing component and other components. The flowmeter is fixed between the flowmeter clamping devices, and then the experimental gas is introduced after vacuum decompression. During the decompression and gas introduction operations, the damaged flowmeter is prone to disintegration when subjected to pressure, and the splashing of flowmeter fragments can easily cause injuries to workers. During vacuum decompression and the introduction of experimental gas, if the flowmeter is not tightly sealed and leaks, it is usually detected through a high-precision pressure transmitter, and the worker then adjusts the flowmeter. The high-precision pressure transmitter usually displays the overall pressure inside the flowmeter, which is not convenient for workers to judge the specific leakage point, thereby making the workers' adjustment operations inconvenient. For this reason, we propose a gas ultrasonic flowmeter dry calibration device with easy operation. Utility Model Content

[0004] The utility model aims to provide a convenient dry-marking device for a gas ultrasonic flowmeter, so as to solve the problems in the above-mentioned background technology that the flowmeter disintegrates and splashes when under pressure, causing injuries to workers and making it inconvenient for workers to determine the specific leakage point.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a convenient-to-operate dry calibration device for a gas ultrasonic flowmeter, comprising:

[0006] A main body, an operating table is arranged on the top of the main body, a plurality of cross columns are arranged on the side walls of the operating table, a left clamping plate and a right clamping plate are matched with the outside of the cross columns, a sliding groove is arranged on the side walls of the main body, a sliding block is slidably matched with the inside of the sliding groove, a plurality of sliding plates are matched with the inside of the sliding block, a plurality of rollers are arranged on the side walls of the sliding plate, a limiting slideway matched with the rollers is arranged inside the sliding groove, a fixing block is arranged on the side walls of the sliding block, and a protective plate is arranged on the top of the fixing block;

[0007] A sliding ring, the sliding ring is matched with the outside of the horizontal column, a plurality of diagonal braces are arranged on the top of the sliding ring, a deformation strip is arranged on the top of the diagonal brace, a plurality of sensing probes are arranged on the side wall of the deformation strip, a nylon strip and a metal wire are embedded in the outer wall of the deformation strip, the sensing probe is electrically connected to a warning device fixed to the side wall of the body, and a buzzer is arranged on the side wall of the warning device.

[0008] Preferably, a plurality of positioning pits are arranged inside the limiting slideway.

[0009] Preferably, a spring matched with the sliding plate is arranged inside the sliding block.

[0010] Preferably, the deformation strip is fitted between the left clamping plate and the right clamping plate.

[0011] Preferably, a wiring cavity is provided inside the deformation strip.

[0012] Preferably, an arc-shaped strip is embedded in the outer wall of the protective plate.

[0013] Preferably, a plurality of warning lights are provided on the side wall of the warning device.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model positions the protective plate on the side walls of the left and right clamping plates by arranging a push-pull sliding block in cooperation with a limiting slideway with positioning pits, so that the protective plate can be shielded on the side wall of the flow meter undergoing dry marking, thereby preventing the flow meter from being crushed, disintegrated and splashed due to pressure during dry marking, thereby preventing the operator from being injured.

[0016] 2. The utility model provides a bendable and deformable deformation strip so that multiple airflow sensors can be matched with the outer wall of the flow meter being dry-calibrated. When airflow occurs at multiple locations outside the flow meter during vacuum decompression or when gas is introduced, multiple point warnings can be issued, thereby helping operators to find the leakage points in time and increasing the convenience of using the dry-calibration device of the gas ultrasonic flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the sliding slot of the utility model;

[0019] Figure 3 This is a schematic diagram of the deformation strip structure of the utility model;

[0020] Figure 4 For the utility model Figure 1 A magnified schematic diagram of position A in the middle.

[0021] In the figure: 100, main body; 101, operating table; 102, left clamping plate; 103, right clamping plate; 104, horizontal column; 110, sliding groove; 111, limiting slide; 112, positioning pit; 120, sliding block; 121, fixing block; 122, protective plate; 123, arc strip; 124, sliding plate; 125, roller; 200, sliding ring; 210, diagonal support; 220, deformation strip; 221, nylon strip; 222, wiring cavity; 223, metal wire; 230, induction probe; 240, warning device; 241, buzzer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] See also Figure 1-Figure 4 , a convenient-to-operate dry calibration device for gas ultrasonic flowmeter shown in the figure includes:

[0025] An operating table 101 is provided on the top of the body 100;

[0026] In some embodiments, the main body 100 is composed of a flow meter placement table, a flow meter clamping device, a meter body lifting mechanism, a nitrogen cylinder, a high-precision pressure transmitter, a temperature transmitter, a vacuum gas replacement device, a computer data processing component and other components. The operating table 101 is a computer data processing component. The specific components of each mechanism are all existing technologies. The operator installs the test piece on the flow meter placement table, clamps the test piece through the flow meter clamping device, starts the vacuum pump of the vacuum gas replacement device to perform vacuum operation, and when the high-precision pressure transmitter senses that the air pressure inside the flow meter is 0.5kpa, the vacuum pump of the vacuum gas replacement device is turned off, and nitrogen experimental gas is put in and wait for 3 minutes. After the pressure and temperature are transmitted to the computer data processing component, the theoretical sound speed is calculated by temperature and pressure, and then the calibration of the flow meter is completed. After the test is completed, the nitrogen is directly discharged.

[0027] The side wall of the operating table 101 is provided with a plurality of horizontal columns 104, and the outside of the horizontal columns 104 is matched with a left clamping plate 102 and a right clamping plate 103, and the left clamping plate 102 and the right clamping plate 103 are flow meter clamping devices. The side wall of the body 100 is provided with a sliding groove 110, and a sliding block 120 is slidably matched inside the sliding groove 110, and a plurality of sliding plates 124 are matched inside the sliding block 120. The side wall of the sliding plate 124 is provided with a plurality of rollers 125, and the sliding groove 110 is provided with a plurality of rollers 125 matched with the sliding plate 124. The limiting slideway 111 of the roller 125, the side wall of the sliding block 120 is provided with a fixing block 121, and the top of the fixing block 121 is provided with a protective plate 122, and the protective plate 122 is made of transparent tempered glass commonly found in the market. When the protective plate 122 needs to be removed, it is only necessary to push the sliding block 120 to the right so that the roller 125 is compressed inside the positioning pit 112, and then the sliding plate 124 is retracted into the sliding block 120, and then the roller 125 is matched with the limiting slideway 111;

[0028] The sliding ring 200 is matched with the outside of the horizontal column 104. A plurality of diagonal braces 210 are arranged on the top of the sliding ring 200. A deformation strip 220 is arranged on the top of the diagonal brace 210. The deformation strip 220 is a common rubber strip on the market. The deformation strip 220 crosses into a mesh. A plurality of sensing probes 230 are arranged on the side wall of the deformation strip 220. The sensing probe 230 uses a 51 / STM32 / Arduino compatible airflow sensor of the brand Fengdian Wulian on the market. A nylon strip 221 and a metal wire 223 are embedded in the outer wall of the deformation strip 220. The sensing probe 230 is electrically connected to a fixed body 1 00, an alarm device 240 is arranged on the side wall, a plurality of micro data processors are arranged inside the alarm device 240, and each sensing probe 230 is electrically connected to a micro data processor and then electrically connected to a warning light, the micro data processor uses the MSC1202Y3RHHRB model of IT brand on the market, the warning light uses the F5 round head blue light model of Kewei brand on the market, a buzzer 241 is arranged on the side wall of the alarm device 240, the buzzer 241 is electrically connected to the micro data processor, the buzzer 241 uses the YN8503 model of Yueneng brand on the market.

[0029] Specifically, a plurality of positioning pits 112 are arranged inside the limiting slide 111 .

[0030] Furthermore, a spring matched with the sliding plate 124 is disposed inside the sliding block 120 .

[0031] Furthermore, the deformation strip 220 is fitted between the left clamping plate 102 and the right clamping plate 103 .

[0032] Furthermore, a wiring cavity 222 is provided inside the deformation strip 220 , and the wiring cavity 222 is used to set a data line of the sensing probe 230 .

[0033] It is worth noting that an arc-shaped bar 123 is embedded in the outer wall of the protection plate 122 , and the arc-shaped bar 123 is a stainless steel bar.

[0034] It is worth noting that a plurality of warning lights are disposed on the side wall of the warning device 240 .

[0035] In some embodiments, the electrical components and electrical equipment mentioned above all use external power sources.

[0036] In addition, the circuits, electronic components and modules involved in the utility model are all prior art, and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to the internal structure and method.

[0037] Working principle: After the flow meter is installed, push the sliding block 120 to the left, so that the sliding block 120 moves to the left in cooperation with the sliding groove 110, and at the same time, the sliding plate 124 cooperates with the roller 125 to slide to the left inside the limiting slide 111. When the roller 125 slides to the position of the positioning groove 112, the spring uses its own elasticity to push the two sliding plates 124 to move outward, and the roller 125 enters the interior of the positioning groove 112, so that the protective plate 122 can be blocked on the side wall of the flow meter that is undergoing dry marking, to prevent the flow meter from being broken, disintegrated and splashed due to pressure during dry marking, causing harm to the operator. When installing the flow meter, the deformation strip 220 can be bent in advance so that the deformation strip 220 is away from the installation position of the flow meter. After the flow meter is installed, the deformation strip 220 can be bent so that the deformation strip 220 fits the outside of the flow meter. When the flow meter is decompressed and ventilated and a leak occurs, the sensing probe 230 senses the airflow and transmits an electrical signal to the alarm 240. After receiving the signal, the alarm 240 processes the data and turns on the corresponding warning light of the sensing probe 230, and makes the buzzer 241 sound a buzzer to remind. When it senses that multiple locations outside the flow meter leak and airflow occurs during vacuum decompression or gas introduction, multiple warnings can be given, thereby helping the operator to find the points of sealing leakage in time, thereby increasing the convenience of using the dry standard device of the gas ultrasonic flow meter.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A convenient-to-operate dry calibration device for gas ultrasonic flowmeter, characterized in that: include: A body (100), wherein an operating table (101) is arranged on the top of the body (100), a plurality of cross columns (104) are arranged on the side wall of the operating table (101), a left clamping plate (102) and a right clamping plate (103) are matched on the outside of the cross column (104), a sliding groove (110) is provided on the side wall of the body (100), a sliding block (120) is slidably matched inside the sliding groove (110), a plurality of sliding plates (124) are matched inside the sliding block (120), a plurality of rollers (125) are arranged on the side wall of the sliding plate (124), a limiting slideway (111) matched with the rollers (125) is provided inside the sliding groove (110), a fixing block (121) is arranged on the side wall of the sliding block (120), and a protective plate (122) is arranged on the top of the fixing block (121); A sliding ring (200) is matched with the outside of the horizontal column (104), a plurality of diagonal braces (210) are arranged on the top of the sliding ring (200), a deformation strip (220) is arranged on the top of the diagonal brace (210), a plurality of sensing probes (230) are arranged on the side wall of the deformation strip (220), a nylon strip (221) and a metal wire (223) are embedded on the outer wall of the deformation strip (220), the sensing probe (230) is electrically connected to a warning device (240) fixed to the side wall of the body (100), and a buzzer (241) is arranged on the side wall of the warning device (240).

2. According to the convenient-to-operate dry calibration device for gas ultrasonic flowmeter according to claim 1, it is characterized by: A plurality of positioning pits (112) are arranged inside the limiting slideway (111).

3. A convenient-to-operate dry calibration device for gas ultrasonic flowmeter according to claim 2, characterized in that: A spring matched with the sliding plate (124) is arranged inside the sliding block (120).

4. The convenient-to-operate dry calibration device for gas ultrasonic flowmeter according to claim 3 is characterized in that: The deformation strip (220) is fitted between the left clamping plate (102) and the right clamping plate (103).

5. The convenient-to-operate dry calibration device for gas ultrasonic flowmeter according to claim 4, characterized in that: A wiring cavity (222) is provided inside the deformation strip (220).

6. The convenient-to-operate dry calibration device for gas ultrasonic flowmeter according to claim 5, characterized in that: An arc-shaped strip (123) is embedded in the outer wall of the protection plate (122).

7. The convenient-to-operate dry calibration device for gas ultrasonic flowmeter according to claim 6, characterized in that: The side wall of the warning device (240) is provided with a plurality of warning lights.

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