CN209197960U - Elastic element type novel pressure gauge capable of being calibrated in situ - Google Patents

Abstract

The utility model discloses a but novel manometer of normal position calibration's elastic element formula, including manometer head, valve body, rotatable tee bend ball valve, calibration passageway and medium isolating device, the manometer head is installed on the valve body, and manometer head and valve body structure as an organic whole, one side of valve body is equipped with calibration source interface, rotatable tee bend ball valve is installed in the valve body, the calibration passageway sets up in calibration mouth department, and the one end of calibration passageway is connected with rotatable tee bend ball valve. The elastic element type novel pressure gauge capable of being calibrated in situ has the characteristics of simple structure, no increase of the current gauge type volume, high calibration efficiency, good economy, strong environmental adaptability, suitability for popularization and the like; compared with the traditional pressure gauge, the in-situ calibration can be realized more conveniently and efficiently, the damage of instrument disassembly to equipment is reduced to the maximum extent, and the integrity and the reliability of the equipment are guaranteed to the maximum extent.

Description

A New Pressure Gauge of Elastic Element Type with In-Situ Calibration

technical field

The utility model relates to a novel elastic element type pressure gauge which can be calibrated in situ.

Background technique

The elastic element pressure gauge is a very widely used measuring instrument in pressure measurement. Up to now, the elastic element pressure gauge (hereinafter referred to as the pressure gauge) commonly used in various equipment at home and abroad cannot be calibrated in situ. Off-line measurement verification or calibration not only has low work efficiency and cannot adapt to the reality that the pressure gauge is widely used, but also easily damages the safety and reliability of the pressure gauge itself and its equipped pressure gauge interface during the disassembly and reassembly process, affecting The use of installation (equipment) equipment, in addition, the disassembly and assembly of pressure gauges need to stop the normal operation of installation (equipment) equipment, resulting in an increase in production costs. On the other hand, due to design or space requirements, the pipelines equipped with pressure measurement parts cannot Install a special interface dedicated to online measurement and calibration of pressure gauges. Therefore, the inability to achieve in-situ calibration of pressure gauges has become an important bottleneck restricting equipment measurement technology services.

Utility model content

The purpose of the utility model is to provide a new elastic element type pressure gauge that can be calibrated in situ, has a simple structure, does not increase the volume of the current phenotype, has high calibration efficiency, good economy, and strong environmental adaptability.

The technical scheme adopted by the utility model to achieve the above purpose is: a new elastic element type pressure gauge that can be calibrated in situ, including a pressure gauge head, a valve body, a rotatable three-way ball valve, a calibration channel and a medium isolation device. The pressure gauge head is installed on the valve body, the pressure gauge head and the valve body are integrated, one side of the valve body is provided with a calibration source interface, the rotatable three-way ball valve is installed in the valve body, and the calibration channel is set At the interface of the calibration source, one end of the calibration channel is connected with a rotatable three-way ball valve.

An anti-leakage warning sealing cover is installed on the calibration source interface.

The top of the anti-leakage warning sealing cover adopts a thin and concave elastic metal cover.

When calibrating, turn the rotatable three-way ball valve so that the transverse channel of the rotatable three-way ball valve is connected with the calibration channel, and the calibration channel is connected with the calibration source through the calibration source interface, and at the same time cut off the longitudinal channel between the rotatable three-way ball valve and the pressure gauge head .

The utility model is a novel elastic element type pressure gauge that can be calibrated in situ. It has the characteristics of simple structure, no increase in current phenotype volume, high calibration efficiency, safety and reliability, good economy, strong environmental adaptability, and suitable for popularization; and Compared with traditional pressure gauges, it can achieve in-situ calibration more conveniently and efficiently, minimize the damage to equipment caused by instrument disassembly, and maximize the integrity and reliability of equipment.

Description of drawings

Fig. 1 is a structural schematic diagram of a novel pressure gauge of elastic element type that can be calibrated in situ according to the utility model.

In the figure: 1. Pressure gauge head; 2. Valve body; 3. Rotatable three-way ball valve; 4. Calibration channel; 5. Medium isolation device; 6. Leakage warning sealing cover; 7. Calibration source interface.

Detailed ways

As shown in Figure 1, the new elastic element type pressure gauge that can be calibrated in situ includes a pressure gauge head 1, a valve body 2, a rotatable three-way ball valve 3, a calibration channel 4 and a medium isolation device 5, and the pressure gauge head 1 is installed on On the valve body 2, the pressure gauge head 1 and the valve body 2 are integrated. One side of the valve body 2 is provided with a calibration source interface 7. The rotatable three-way ball valve 3 is installed in the valve body 2, and the calibration channel 4 is set in the calibration source. At the interface 7, one end of the calibration channel 4 is connected to the rotatable three-way ball valve 3, and the calibration source interface 7 is equipped with an anti-leakage warning sealing cover 6. When calibrating, open the anti-leakage warning sealing cover 6 and rotate the rotatable three-way ball valve 3 , so that the transverse channel of the rotatable three-way ball valve 3 communicates with the calibration channel, the calibration channel 4 communicates with the calibration source through the calibration source interface 7, and at the same time cuts off the longitudinal channel connecting the rotatable three-way ball valve 3 with the pressure gauge head 1, the calibration source and The different media in the pressure gauge are effectively isolated to prevent the pollution of the working medium of the equipment (equipment). The leak-proof warning sealing cover 6 is used as a safety measure for the calibration source interface. The top of the sealing cover adopts a thin and concave elastic metal cover. The size of its elastic stress depends on the pressure medium and pressure value. If the concave sealing cover protrusion is found during use or calibration, it means that the sealing of the ball valve part exceeds the specified threshold, and safety measures need to be taken. The elastic element type new type of pressure that can be calibrated in situ The meter can switch the measuring mechanism between the pressure calibration device and the pressure source to be measured by the conversion of the rotatable three-way ball valve, which provides a safe and convenient channel for the real-time calibration and periodic calibration of the pressure gauge. To disassemble the pressure gauge, maximize the working efficiency of the pressure gauge, and design a pressure gauge that can be calibrated in situ, the key is to install a set of easily convertible " The rotatable three-way ball valve 3 of the T”-shaped channel makes the three orthogonal channels communicate with each other, and the third channel interface can be cut off conveniently through the rotation of the rotatable three-way ball valve. When the pressure gauge works normally, it only needs to close the calibration channel. During verification or calibration, turn the rotatable three-way ball valve, connect the calibration channel of the calibration source interface and block the working port at the same time, then rotate the longitudinal channel connecting the three-way ball valve and the pressure gauge head, and connect the calibration device to the calibration channel of the calibration source interface. On the channel, it can be completed according to the prescribed method. Since the calibration channel is designed with a medium isolation device, it will not cause damage to the equipment due to the mixing of the calibration medium and the measured working medium. After the calibration is completed, rotate the rotatable three-way ball valve to make the work The normal working state can be resumed after the interface is connected, and the whole process is easy to operate without stopping the normal operation of the equipment.

Claims (4)

1. one kind can calibrated in situ elastic element formula Novel pressure meter, it is characterised in that: including pressure gauge outfit, valve body, can revolve Turn three-way ball valve, calibrated channel and medium isolating device, the pressure gauge outfit is mounted on valve body, and pressure gauge outfit and valve body are one Body structure, the side of the valve body are equipped with calibration source interface, and the Rotatable tee joint ball valve is mounted in valve body, and the calibration is logical Road is arranged in calibration source interface, and one end of calibrated channel is connect with Rotatable tee joint ball valve.

2. one kind according to claim 1 can calibrated in situ elastic element formula Novel pressure meter, it is characterised in that: it is described Anti-leak warning sealing cover is installed on calibration source interface.

3. one kind according to claim 2 can calibrated in situ elastic element formula Novel pressure meter, it is characterised in that: it is described Anti-leak warns the top of sealing cover using the elastic metal cap of slim indent.

4. one kind according to claim 1 can calibrated in situ elastic element formula Novel pressure meter, it is characterised in that: calibration When, Rotatable tee joint ball valve is rotated, is connected to the interconnection of Rotatable tee joint ball valve with calibrated channel, calibrated channel passes through school Quasi- source interface is connected to calibration source, while cutting off the vertical passage that Rotatable tee joint ball valve is connected to pressure gauge outfit.