CN219996420U - Digital pressure gauge with pressure relief structure - Google Patents

Abstract

The utility model discloses a digital pressure gauge with a pressure relief structure, which comprises a display and a connecting pipe connected to the bottom end of the display, wherein the bottom end of the connecting pipe is in threaded connection with a conveying pipe, one side of the connecting pipe is fixedly connected with a vent pipe, and one end of the vent pipe, which is far away from the connecting pipe, is fixedly connected with a hollow cylinder; the bottom end of the hollow cylinder is fixedly connected with a fixed cover, the inside of the hollow cylinder is movably connected with a piston, the piston is matched with the inside of the hollow cylinder, and the upper end of the piston is vertically fixed with a feeler lever; the pressure release hole is formed in the side wall of one side of the hollow cylinder, the shielding assembly is arranged on the outer side of the pressure release hole, the rotating cover is sleeved at the upper end of the hollow cylinder, the bottom end of the rotating cover is fixedly connected with the contact switch, and the contact switch corresponds to the feeler lever.

Description

Digital pressure gauge with pressure relief structure

Technical Field

The utility model relates to a digital pressure gauge with a pressure relief structure, and belongs to the technical field of digital pressure gauges.

Background

The digital pressure gauge combines the world leading micro-processing technology and the advanced analog-digital conversion algorithm, thereby meeting the requirements of high precision and low power consumption. The large screen LCD technology and the unique background lamp technology make the data clear and easy to read at night. And (3) adopting an inlet chip to collect, memorize and measure the data of the instrument, and returning to zero manually. The shell is fully sealed by stainless steel, is corrosion-resistant and vibration-resistant, and can be applied to various complex environments.

However, as the digital pressure gauge on some gas pipelines has no good pressure relief structure, once the gas pressure in the gas pipelines suddenly rises due to special conditions, when the gas pressure exceeds the maximum range of the pressure gauge, the sensing diaphragm of the pressure gauge is easily damaged when the sensing diaphragm of the pressure gauge is extruded by stronger gas pressure for a long time, so that the pressure gauge is damaged to cause inaccurate pressure measurement.

Disclosure of Invention

The utility model aims to provide a digital pressure gauge with a pressure relief structure, so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the digital pressure gauge with the pressure relief structure comprises a display and a connecting pipe connected to the bottom end of the display, wherein the bottom end of the connecting pipe is in threaded connection with a conveying pipe, one side of the connecting pipe is fixedly connected with a vent pipe, and one end, far away from the connecting pipe, of the vent pipe is fixedly connected with a hollow cylinder; the bottom end of the hollow cylinder is fixedly connected with a fixed cover, a piston is movably connected in the hollow cylinder, the piston is matched with the interior of the hollow cylinder, and a feeler lever is vertically fixed at the upper end of the piston; the pressure release device is characterized in that a pressure release hole is formed in one side wall of the hollow cylinder, a shielding assembly is arranged outside the pressure release hole, a rotating cover is sleeved at the upper end of the hollow cylinder, a contact switch is fixedly connected to the bottom end of the rotating cover and corresponds to the contact rod, an alarm is fixedly connected to the upper end of the rotating cover, and the alarm is electrically connected with the contact switch.

Preferably, the shielding assembly comprises a mounting block, a mounting groove and a shielding block, wherein the mounting block is fixedly connected to the outer side of the hollow cylinder, the mounting block is positioned at the upper end of the pressure relief hole, the mounting groove is formed in one side of the mounting block, the upper end of the shielding block is rotationally connected with the mounting groove, and the shielding block corresponds to the pressure relief hole.

Preferably, the piston bottom central point puts fixedly connected with connecting rod, the connecting rod cup joints with the fixed cover activity, connecting rod bottom fixedly connected with control block.

Preferably, the piston corresponds to the pressure relief hole, and the height of the piston is greater than the drift diameter of the pressure relief hole.

Preferably, the rotary cover is in threaded connection with the upper end of the hollow cylinder.

Compared with the prior art, the utility model has the beneficial effects that: the gas is discharged outside through the pressure relief hole, and meanwhile, the feeler lever can be contacted with the contact switch through the movement of the piston, so that the alarm sounds, the pressure gauge assembly is prevented from being damaged due to the influence of excessive high pressure for a long time, and the service life and the service performance of the pressure gauge are ensured.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the hollow cylinder of the present utility model;

FIG. 3 is a schematic view of a rotary cover according to the present utility model;

fig. 4 is a schematic view of the shielding assembly of the present utility model.

In the figure: 1. a transport tube; 2. a connecting pipe; 3. a display; 4. a vent pipe; 5. a hollow cylinder; 6. a shielding assembly; 61. a mounting block; 62. a mounting groove; 63. a shielding block; 7. a rotary cover; 8. an alarm; 9. a pressure relief hole; 10. a fixed cover; 11. a control block; 12. a feeler lever; 13. a piston; 14. a connecting rod; 15. and a contact switch.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the digital pressure gauge with the pressure relief structure comprises a display 3 and a connecting pipe 2 connected to the bottom end of the display 3, wherein the bottom end of the connecting pipe 2 is in threaded connection with a conveying pipe 1, one side of the connecting pipe 2 is fixedly connected with a vent pipe 4, and one end, far away from the connecting pipe 2, of the vent pipe 4 is fixedly connected with a hollow cylinder 5; the bottom end of the hollow cylinder 5 is fixedly connected with a fixed cover 10, a piston 13 is movably connected inside the hollow cylinder 5, the piston 13 is matched with the inside of the hollow cylinder 5, and a feeler lever 12 is vertically fixed at the upper end of the piston 13; be equipped with pressure release hole 9 on hollow section of thick bamboo 5 one side lateral wall, the pressure release hole 9 outside is equipped with and shelters from subassembly 6, hollow section of thick bamboo 5 upper end cover is equipped with the revolving cap 7, revolving cap 7 bottom fixedly connected with contact switch 15, contact switch 15 is corresponding with feeler lever 12, revolving cap 7 upper end fixedly connected with siren 8, siren 8 and contact switch 15 electric connection, it is outer to arrange gas through pressure release hole 9, simultaneously, feeler lever 12 can with contact switch 15 through the removal of piston 13, thereby make siren 8 sound, prevent that the manometer subassembly from receiving the influence of too high atmospheric pressure for a long time and appearing the damage, guarantee manometer's life and performance.

The shielding assembly 6 comprises a mounting block 61, a mounting groove 62 and a shielding block 63, wherein the mounting block 61 is fixedly connected to the outer side of the hollow cylinder 5, the mounting block 61 is positioned at the upper end of the pressure relief hole 9, the mounting groove 62 is arranged on one side of the mounting block 61, the upper end of the shielding block 63 is rotationally connected with the mounting groove 62, the shielding block 63 corresponds to the pressure relief hole 9, the shielding block 63 shields the pressure relief hole 9, and external sundries are prevented from entering the hollow cylinder 5 through the pressure relief hole 9; the center of the bottom end of the piston 13 is fixedly connected with a connecting rod 14, the connecting rod 14 is movably sleeved with the fixed cover 10, the bottom end of the connecting rod 14 is fixedly connected with a control block 11, and the piston 13 can be driven to move up and down through the control block 11 and the connecting rod 14, so that the air pressure during pressure relief can be adjusted, and the adaptability is stronger; the piston 13 corresponds to the pressure relief hole 9, the height of the piston 13 is larger than the drift diameter of the pressure relief hole 9, and the pressure relief can be started only when the piston 13 is separated from the pressure relief hole 9; the rotating cover 7 is in threaded connection with the upper end of the hollow cylinder 5, so that later disassembly is facilitated.

Specifically, when the utility model is used, the gas in the transport pipe 1 can synchronously enter the hollow cylinder 5 through the connecting pipe 2 and the vent pipe 4, the gas entering the hollow cylinder 5 can push the piston 13 to move upwards, the piston 13 is pushed to move upwards for a certain distance, but the outer side of the piston 13 always corresponds to the pressure relief hole 9, when the air pressure in the transport pipe 1 suddenly increases, the piston 13 receives stronger acting force and moves upwards again, when the air pressure is very large, the piston 13 is separated from the pressure relief hole 9 due to the longer upward moving distance of the piston 13, the gas in the hollow cylinder 5 can be discharged outwards through the pressure relief hole 9, and meanwhile, the feeler lever 12 can be contacted with the contact switch 15 through the movement of the piston 13, so that the alarm 8 can sound, the pressure gauge assembly is prevented from being damaged due to the influence of the excessive air pressure for a long time, and the service life and the service performance of the pressure gauge are ensured.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a digital manometer with pressure release structure, includes display (3) and connects connecting pipe (2) in display (3) bottom, its characterized in that: the bottom end of the connecting pipe (2) is in threaded connection with the conveying pipe (1), one side of the connecting pipe (2) is fixedly connected with a vent pipe (4), and one end, far away from the connecting pipe (2), of the vent pipe (4) is fixedly connected with a hollow cylinder (5); the bottom end of the hollow cylinder (5) is fixedly connected with a fixed cover (10), a piston (13) is movably connected inside the hollow cylinder (5), the piston (13) is matched with the inside of the hollow cylinder (5), and a feeler lever (12) is vertically fixed at the upper end of the piston (13); be equipped with pressure release hole (9) on hollow section of thick bamboo (5) one side lateral wall, pressure release hole (9) outside is equipped with and shelters from subassembly (6), hollow section of thick bamboo (5) upper end cover is equipped with changes lid (7), change lid (7) bottom fixedly connected with contact switch (15), contact switch (15) are corresponding with feeler lever (12), change lid (7) upper end fixedly connected with siren (8), siren (8) and contact switch (15) electric connection.

2. A digital pressure gauge with pressure relief structure according to claim 1, wherein: the shielding assembly (6) comprises a mounting block (61), a mounting groove (62) and a shielding block (63), wherein the mounting block (61) is fixedly connected to the outer side of the hollow cylinder (5), the mounting block (61) is positioned at the upper end of the pressure relief hole (9), the mounting groove (62) is formed in one side of the mounting block (61), the upper end of the shielding block (63) is rotationally connected with the mounting groove (62), and the shielding block (63) corresponds to the pressure relief hole (9).

3. A digital pressure gauge with pressure relief structure according to claim 1, wherein: the piston (13) bottom central point puts fixedly connected with connecting rod (14), connecting rod (14) are cup jointed with fixed lid (10) activity, connecting rod (14) bottom fixedly connected with control block (11).

4. A digital pressure gauge with pressure relief structure according to claim 1, wherein: the piston (13) corresponds to the pressure relief hole (9), and the height of the piston (13) is larger than the drift diameter of the pressure relief hole (9).

5. A digital pressure gauge with pressure relief structure according to claim 1, wherein: the rotating cover (7) is in threaded connection with the upper end of the hollow cylinder (5).