Protective pressure gauge

Abstract

The utility model discloses a protective pressure gauge, which relates to the technical field of pressure gauges, and comprises a protective shell and a pressure gauge main body, the inner side of the protective shell is provided with a protective assembly, the inner side of the protective shell is fixedly connected with a protective air bag, and an exhaust hole is arranged between the protective shell and the protective air bag. The top of the protective shell is fixedly connected with an alarm device, the side face of the pressure reduction cylinder is provided with an anti-corrosion shell, and the coil rotor is electrically connected with the alarm device. Through the arranged pressure relief assembly, quick pressure relief can be conducted at the position of the pressure gauge, the pressure gauge is effectively prevented from being damaged due to overpressure, and the protective air bag is inflated in the pressure relief process; the protection air bag is tightly attached to the pressure gauge, if explosion occurs, the protection shell and the protection air bag can play a buffering role, meanwhile, gas drives the coil rotor to rotate to cut magnetic induction lines to generate induction current, the alarm device is triggered to give an alarm, various safety protections are adopted, and the safety and reliability of the pressure gauge are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure gauge technical field especially relates to a protective pressure gauge. BACKGROUND

[0002] Pressure gauge is a kind of instrument for measuring greater than atmospheric pressure, is widely used in industry, petroleum, chemical industry and other fields. It is mainly based on the elastic deformation principle of sensitive element (such as spring tube, diaphragm box, diaphragm, bellows etc.) under the action of pressure, through transmission mechanism amplification deformation, makes pointer indicate the measured pressure value on the dial;Pressure gauge is various, according to elastic sensitive element can be divided into spring tube type, diaphragm box type, diaphragm type, bellows type etc.;According to the use can be divided into ordinary pressure gauge, oxygen pressure gauge, electric contact pressure gauge, remote pressure gauge, vibration-resistant pressure gauge etc.

[0003] Through the retrieval, the utility model discloses a protective pressure gauge, compared with prior art, the utility model discloses a protective pressure gauge through: through the cover, the glass surface of pressure gauge can be protected, it is convenient for staff to observe the pointer data of pressure gauge, when being impacted by outside accident, through the protective shell, the damage of outside accident to the glass surface of pressure gauge can be weakened.

[0004] But the above-mentioned device in the actual use process, through the cover to the glass surface of pressure gauge protection, although it is convenient for staff to observe the pointer data, and can weaken the damage of outside accident to the glass surface to a certain extent, but this way when the internal pressure of pressure gauge is abnormally high, can not release pressure in time effectively, leading to the internal element of pressure gauge is damaged or causes safety accident, since the cover protection lacks alarm function, the pressure relief process is not easy to be found by staff, not easy to carry out real-time monitoring and alarm to the pressure value of pressure gauge, increases the risk of accident, therefore in order to solve the above problems, propose a protective pressure gauge. Utility model content

[0005] The utility model aims at solving the single protection mode of pressure gauge in prior art and provides a protective pressure gauge.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme: a protective pressure gauge, including protective shell and pressure gauge main body, the inner side of protective shell is provided with protection assembly, the protection assembly is used for protecting pressure gauge main body, the protection assembly includes the pressure relief cylinder arranged in the inner side of protective shell, the anticorrosion shell installed on the pressure relief cylinder, the pressure relief head slidingly arranged in the inner side of pressure relief cylinder, the magnet, coil rotor and fan blade installed on the top of pressure relief cylinder;

[0007] The inner side of the protective shell is fixedly connected with a protection air bag, exhaust holes are formed between the protective shell and the protection air bag, an alarm device is fixedly connected to the top of the protective shell, a corrosion-proof shell is installed on the side of the pressure reducing cylinder, and the coil rotor is electrically connected with the alarm device.

[0008] The technical scheme further comprises:

[0009] The bottom of the protective shell is designed with an arc, the side of the protective shell is provided with an observation port, and the bottom of the pressure reducing cylinder is threadedly connected with a pipeline joint.

[0010] The side of the pressure reducing cylinder is fixedly connected with a mounting plate, the pressure gauge main body is mounted on the mounting plate, the corrosion-proof shell is fixedly connected with the mounting plate, the pressure gauge main body is located on the inner side of the corrosion-proof shell, and the corrosion-proof shell is threadedly connected with the explosion-proof lens.

[0011] The outer side of the pipeline joint is provided with a connecting port, a connecting pipe is fixedly connected between the connecting port and the pressure gauge main body, and the corrosion-proof shell and the connecting pipe are in a nested arrangement.

[0012] The protective assembly further comprises an air cavity formed in the pressure reducing cylinder, the outer side of the pressure reducing cylinder is fixedly connected with two pressure relief pipes, the two pressure relief pipes are fixedly connected with the pipeline joint, and the pressure relief pipes are in communication with the air cavity and the pipeline joint.

[0013] The inner side of the air cavity is fixedly connected with a limiting ring and a pressure relief ring, the pressure relief ring slides relative to the pressure relief head, the center notch of the pressure relief ring is designed in an inner inclined shape, and the end of the pressure relief head close to the limiting ring is designed in an outer inclined shape.

[0014] One end of the pressure relief head close to the limiting ring is fixedly connected with a sealing plate, and the pressure relief ring and the sealing plate are fixedly connected with a spring.

[0015] The end of the pressure reducing cylinder is fixedly connected with a pressure relief cylinder, the inner side of the pressure relief cylinder is fixedly connected with a support frame, the inner side of the support frame is rotatably connected with a transmission shaft, the coil rotor and the fan blades are fixedly connected with the transmission shaft, and the symmetrical magnet is fixedly connected with the pressure relief cylinder.

[0016] The utility model has the advantages of:

[0017] 1、The pressure relief assembly is arranged, when the pressure of the pressure gauge is too large, the pressure relief can be rapidly carried out, the damage of the pressure gauge due to overpressure is effectively prevented, the damage of the whole system caused by the excessively high pressure is avoided, and the stable industrial production and scientific experiment are ensured.

[0018] 2. The utility model discloses, utilize the pressure relief subassembly who sets up fast to the protection air bag inflation, make the protection air bag closely adhere to pressure gauge, if explosion occurs, utilize protection shell and protection air bag can play the buffering effect, simultaneously gas drives coil rotor rotation and cut magnetic induction line and produce induced current, trigger alarm device alarm, adopt a plurality of safety protection, the security and reliability of pressure gauge have been improved greatly. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure schematic diagram of protective pressure gauge that the utility model proposes;

[0020] Figure 2 It is the internal structure schematic diagram of protection shell in the utility model;

[0021] Figure 3 It is protection assembly structure schematic diagram in the utility model;

[0022] Figure 4 It is the internal structure schematic diagram of pressure reduction cylinder in the utility model;

[0023] Figure 5 It is pressure relief head structure schematic diagram in the utility model.

[0024] In the drawing: 1, protection shell;2, alarm device;3, exhaust hole;4, explosion -proof lens;5, observation port;6, protection air bag;7, anticorrosive shell;8, pressure gauge;9, pipeline joint;10, pressure reduction cylinder;11, pressure relief cylinder;12, mounting plate;13, pressure relief pipe;14, connecting port;15, support frame;16, to magnet;17, coil rotor;18, fan blade;19, pressure relief ring;20, air cavity;21, limit ring;22, sealing plate;23, spring;24, pressure relief head;25, transmission shaft;26, connecting pipe. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0026] EMBODIMENT

[0027] As Figures 1-5As shown, the utility model provides a protective pressure gauge, including protection shell 1 and pressure gauge main part 8, the inside of protection shell 1 is provided with protection assembly, and protection assembly is used for protecting pressure gauge main part 8, and protection assembly includes the pressure relief cylinder 10 of the inside setting of protection shell 1, the anticorrosive shell 7 of installation on pressure relief cylinder 10, the pressure relief head 24 of the inside sliding of pressure relief cylinder 10, the magnet 16 of installation on the top of pressure relief cylinder 10, coil rotor 17 and fan blade 18;

[0028] The inside of the inside of protection shell 1 is fixedly connected with a protection air bag 6, and an exhaust hole 3 is formed between the protection shell 1 and the protection air bag 6. The top of the protection shell 1 is fixedly connected with an alarm device 2. The anticorrosive shell 7 is installed on the side of the pressure relief cylinder 10. The coil rotor 17 is electrically connected with the alarm device 2.

[0029] The bottom of the protection shell 1 is designed with an arc. An observation port 5 is formed on the side of the protection shell 1. The bottom of the pressure relief cylinder 10 is threadedly connected with a pipe joint 9.

[0030] The arc design of the protection shell 1 facilitates installation and can be attached to a pipe. The observation port 5 facilitates observation.

[0031] The side of the pressure relief cylinder 10 is fixedly connected with a mounting plate 12. The pressure gauge main part 8 is mounted on the mounting plate 12. The anticorrosive shell 7 is fixedly connected with the mounting plate 12. The pressure gauge main part 8 is located inside the anticorrosive shell 7. The anticorrosive shell 7 is threadedly connected with the explosion-proof lens 4.

[0032] The outside of the pipe joint 9 is provided with a connecting port 14. The connecting port 14 and the pressure gauge main part 8 are fixedly connected with a connecting pipe 26. The anticorrosive shell 7 and the connecting pipe 26 are in a nested arrangement.

[0033] During installation, the pressure gauge main part 8 is first mounted on the mounting plate 12. At this time, the pressure gauge main part 8 is mounted inside the anticorrosive shell 7. Then, the anticorrosive shell 7 is sealed by the explosion-proof lens 4. Finally, the connecting pipe 26 is installed between the pressure gauge main part 8 and the pipe joint 9. Finally, the protection shell 1 is covered on the outside of the pressure gauge main part 8 and the pressure relief cylinder 10 and is mounted on the pipe.

[0034] The protection assembly further includes an air cavity 20 formed inside the pressure relief cylinder 10. The outside of the pressure relief cylinder 10 is fixedly connected with two pressure relief pipes 13. The two pressure relief pipes 13 are fixedly connected with the pipe joint 9. The pressure relief pipes 13 are in communication with the air cavity 20 and the pipe joint 9.

[0035] The gas in the pipe can enter the air cavity 20 through the pressure relief pipes 13 from the pipe joint 9. When the pressure in the pipe increases, the pressure in the air cavity 20 increases and exceeds a certain value. At this time, the air pressure drives the pressure relief head 24 to move downward for pressure relief.

[0036] The inner side of the air cavity 20 is fixedly connected with the limiting ring 21 and the pressure relief ring 19, the pressure relief ring 19 is relatively slid with the pressure relief head 24, the center notch of the pressure relief ring 19 is designed as an inner inclined shape, the end of the pressure relief head 24 close to the pressure relief ring 19 is designed as an outer inclined shape, when the air pressure drives the pressure relief head 24 to move downward, the outer inclined shape of the end and the inner inclined shape arranged in the pressure relief ring 19 are separated from each other, so that the air cavity 20 is not sealed, thereby the gas in the pipeline is discharged, and the pressure of the pipeline returns to the normal value.

[0037] The end of the pressure relief head 24 close to the limiting ring 21 is fixedly connected with the sealing plate 22, the pressure relief ring 19 and the sealing plate 22 are fixedly connected with the spring 23 together, only when the pressure of the air cavity 20 acting on the sealing plate 22 reaches a certain value, and the spring 23 with different elastic coefficients can be selected according to the maximum pressure value borne by the pipeline, when the gas is discharged, the spring 23 is reset, and the air cavity 20 is sealed again.

[0038] The end of the pressure relief cylinder 10 is fixedly connected with the pressure relief cylinder 11, the inner side of the pressure relief cylinder 11 is fixedly connected with the support frame 15, the inner side of the support frame 15 is rotatably connected with the transmission shaft 25, the coil rotor 17 and the fan blade 18 are fixedly connected with the transmission shaft 25 together, and the symmetrical magnet 16 is fixedly connected with the pressure relief cylinder 11 together.

[0039] When the gas is discharged through the pressure relief cylinder 11, the first time of the first discharged gas can make the protective air bag 6 inflate, the protective air bag 6 is in close contact with the anticorrosion shell 7, and the protective air bag 6 can play a role in preventing splashing during explosion, and the gas blows the fan blade 18 to rotate to drive the transmission shaft 25 to rotate, and then the transmission shaft 25 drives the coil rotor 17 to rotate to cut the magnetic induction lines of the magnet 16, to generate an induced current, and the induced current triggers the alarm device to alarm and remind the staff.

[0040] In the embodiment, when the pressure at the pressure gauge body 8 is too large during use, the pressure relief head 24 of the protection assembly is arranged to rapidly reduce the pressure, the gas discharged by pressure relief triggers the fan blade 18 to rotate to drive the coil rotor 17 to cut the magnetic induction lines of the magnet 16 to generate an induced current to trigger the alarm device 2 to alarm and remind the staff, the anticorrosion shell 7 arranged outside the pressure gauge body 8 can reduce the corrosion of the pressure gauge body 8 caused by external pollution, prolong the service life, and the protective shell 1 and the protective air bag 6 are used together to play a buffering role during explosion.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A protective pressure gauge, comprising a protective outer casing (1) and a pressure gauge body (8), characterized in that, The protective housing (1) is provided with a protective component on its inner side. The protective component is used to protect the pressure gauge body (8). The protective component includes a pressure reducing cylinder (10) provided on the inner side of the protective housing (1), an anti-corrosion housing (7) installed on the pressure reducing cylinder (10), a pressure relief head (24) slidably provided on the inner side of the pressure reducing cylinder (10), a counter magnet (16), a coil rotor (17) and a fan blade (18) installed on the top of the pressure reducing cylinder (10). A protective airbag (6) is fixedly connected to the inner side of the protective shell (1). An exhaust hole (3) is provided between the protective shell (1) and the protective airbag (6). An alarm device (2) is fixedly connected to the top of the protective shell (1). An anti-corrosion shell (7) is installed on the side of the pressure reducing cylinder (10). The coil rotor (17) is electrically connected to the alarm device (2).

2. The protective pressure gauge according to claim 1, characterized in that, The bottom of the protective shell (1) is curved, and an observation port (5) is provided on the side of the protective shell (1). The bottom of the pressure reducing cylinder (10) is threaded with a pipe joint (9).

3. A protective pressure gauge according to claim 1, characterized in that, The pressure reducing cylinder (10) is fixedly connected to the side of the mounting plate (12), the pressure gauge body (8) is mounted on the mounting plate (12), the anti-corrosion shell (7) is fixedly connected to the mounting plate (12), the pressure gauge body (8) is located inside the anti-corrosion shell (7), and the anti-corrosion shell (7) is threadedly connected to the explosion-proof lens (4).

4. A protective pressure gauge according to claim 2, characterized in that, The pipe joint (9) has a connection port (14) on its outer side. The connection port (14) and the pressure gauge body (8) are fixedly connected by a connecting pipe (26). The anti-corrosion shell (7) and the connecting pipe (26) are nested together.

5. A protective pressure gauge according to claim 1, characterized in that, The protection assembly also includes an air chamber (20) inside the pressure reducing cylinder (10). A pressure relief pipe (13) is symmetrically fixedly connected to the outside of the pressure reducing cylinder (10). The two pressure relief pipes (13) are fixedly connected to the pipe joint (9), and the pressure relief pipes (13) are in a through-flow with the air chamber (20) and the pipe joint (9).

6. A protective pressure gauge according to claim 5, characterized in that, A limiting ring (21) and a pressure relief ring (19) are fixedly connected to the inner side of the air chamber (20). The pressure relief ring (19) slides relative to the pressure relief head (24). The central notch of the pressure relief ring (19) is designed with an inward bevel, and the end of the pressure relief head (24) near the pressure relief ring (19) is designed with an outward bevel.

7. A protective pressure gauge according to claim 6, characterized in that, A sealing plate (22) is fixedly connected to one end of the pressure relief head (24) near the limiting ring (21), and a spring (23) is fixedly connected between the pressure relief ring (19) and the sealing plate (22).

8. A protective pressure gauge according to claim 7, characterized in that, A pressure relief cylinder (11) is fixedly connected to the end of the pressure relief cylinder (10). A support frame (15) is fixedly connected to the inner side of the pressure relief cylinder (11). A drive shaft (25) is rotatably connected to the inner side of the support frame (15). The coil rotor (17) and the fan blade (18) are fixedly connected to the drive shaft (25). Symmetrically arranged counter magnets (16) are fixedly connected to the pressure relief cylinder (11).

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