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CN-224216214-U - Shock-resistant pressure instrument

CN224216214UCN 224216214 UCN224216214 UCN 224216214UCN-224216214-U

Abstract

The utility model discloses an anti-vibration pressure instrument, which comprises a watchcase and a connecting base fixedly arranged at the bottom of the watchcase, wherein a dial is arranged in the watchcase, a main shaft is rotatably arranged on the dial, the end part of the main shaft is fixedly connected with a pointer, one end of the pointer points to a scale on the dial, the other end of the pointer is fixedly provided with a balancing weight, one side of the balancing weight, which is close to the dial, is fixedly provided with a damping fin, and the scale surface of the dial is fixedly provided with a permanent magnet.

Inventors

  • ZHANG ZHEN
  • CHEN BINGHUI

Assignees

  • 安徽西派仪表有限公司

Dates

Publication Date
20260508
Application Date
20250718

Claims (6)

  1. 1. The anti-vibration pressure instrument comprises a watchcase (1) and a connecting base (2) fixedly arranged at the bottom of the watchcase (1), and is characterized in that a dial (3) is arranged in the watchcase (1), a main shaft (4) is rotatably arranged on the dial (3), a pointer (5) is fixedly connected to the end part of the main shaft (4), one end of the pointer (5) points to a scale on the dial (3), a balancing weight (6) is fixedly arranged at the other end of the pointer (5), a damping fin (7) is fixedly arranged on one side, close to the dial (3), of the balancing weight (6), and a permanent magnet (8) is fixedly arranged on the scale surface of the dial (3).
  2. 2. An anti-seismic pressure gauge according to claim 1, characterized in that the permanent magnet (8) is semi-circular in shape, and the magnetic induction intensity of the permanent magnet (8) is 80-120mT.
  3. 3. The shock-resistant pressure instrument of claim 1, wherein the damping fin (7) is of a 60-degree fan-shaped structure, the damping fin (7) is formed by stamping a brass foil with the thickness of 0.25-0.35mm, a gap between the damping fin (7) and the permanent magnet (8) is 0.5-1mm, when the pointer (5) is vibrated and swung, the damping fin (7) performs cutting magnetic induction line movement in a constant magnetic field formed by the permanent magnet (8), closed induction current is generated inside the damping fin (7), and electromagnetic damping moment opposite to the swinging direction is generated by vortex flow.
  4. 4. The shock-resistant pressure instrument of claim 1, wherein the watch case (1) is fixedly connected with two hanging lugs (9) symmetrically arranged along the axis of the watch case (1), the connecting base (2) is symmetrically provided with bosses (10), and the bosses (10) are in one-to-one correspondence with the hanging lugs (9) and are connected with springs (11) therebetween.
  5. 5. The shock-resistant pressure instrument of claim 4, wherein one end of the spring (11) is fixedly connected with the hanging lug (9), the other end of the spring (11) is fixedly connected with the connecting ring (12), the boss (10) is connected with the screw rod (13) in a threaded manner, the connecting ring (12) is rotationally sleeved on the screw rod (13), the bottom of the screw rod (13) is fixedly connected with the driving plate (14), and the screw rod (13) is used for adjusting the installation height of the other end of the spring (11) through rotation so as to adjust the pretightening force of the spring (11).
  6. 6. An anti-seismic pressure gauge according to claim 1, characterized in that the outer part of the watch case (1) is sleeved with a metal net sleeve (15), a buffer bin (16) is arranged between the metal net sleeve (15) and the watch case (1), and silica gel particles (17) are filled in the buffer bin (16).

Description

Shock-resistant pressure instrument Technical Field The utility model relates to the technical field of pressure instruments, in particular to an anti-seismic pressure instrument. Background In the fields of industrial production, mechanical manufacturing, petrochemical industry and the like, a pressure instrument is used as key measuring equipment, and pressure parameters in a system are required to be monitored in real time so as to ensure the safe operation of the equipment. However, these application scenarios often accompany severe vibrations, such as mechanical vibrations generated by pump body operation, pipeline pulsation, equipment start-stop, etc., which can cause problems of severe pointer swing, measurement accuracy degradation, even component damage, etc. in the conventional pressure instrument. The shock-resistant design of the existing pressure instrument is mostly focused on a watchcase buffering or pointer damping structure, but has obvious limitations that the instrument adopting mechanical damping (such as air damping and liquid damping) is obviously affected by temperature change, damping effect is easy to attenuate, sealing requirement is high, and maintenance cost is high. In an environment with complex vibration frequency, the swing amplitude of the pointer often exceeds the allowable error range, so that an operator is difficult to read an accurate numerical value, and misjudgment can be caused to cause production accidents. Meanwhile, the abrasion of transmission parts in the instrument can be aggravated by long-term high-frequency vibration, the service life is shortened, and the equipment maintenance frequency and the cost are increased. Disclosure of utility model Aiming at the technical problems in the prior art, the utility model provides an anti-seismic pressure instrument, which solves the problems of severe pointer swing, low measurement precision and short service life of the traditional pressure instrument in a vibration environment. The utility model provides an anti-vibration pressure instrument, which comprises a watchcase and a connecting base fixedly arranged at the bottom of the watchcase, wherein a dial is arranged in the watchcase, a main shaft is rotatably arranged on the dial, the end part of the main shaft is fixedly connected with a pointer, one end of the pointer points to scales on the dial, the other end of the pointer is fixedly provided with a balancing weight which can balance the gravity center of the pointer and reduce inertial deflection caused by vibration, one side of the balancing weight, which is close to the dial, is fixedly provided with a damping fin, the scale surface of the dial is fixedly provided with a permanent magnet, and the permanent magnet and the dial are matched to form an electromagnetic damping structure, so that the pointer swing can be quickly restrained. The beneficial effects of the utility model are as follows: 1. Through the action of the electromagnetic damping structure, the swinging of the pointer can be quickly restrained, so that the instrument can still keep higher measurement precision in a complex vibration environment. On the basis of the technical scheme, the utility model can be improved as follows. Preferably, the permanent magnet is semicircular in shape, and the magnetic induction intensity of the permanent magnet is 80-120mT. The adoption of the further scheme has the beneficial effects that the semicircular permanent magnet can be matched with the swing track of the pointer, so that the damping fin is always in the magnetic field range in the swing process, the magnetic induction intensity of 80-120mT can provide stable and proper magnetic field intensity, and the reliability of the electromagnetic damping effect is ensured. Preferably, the damping fin is of a 60-degree fan-shaped structure, the damping fin is formed by stamping a brass foil with the thickness of 0.25-0.35mm, the brass foil has good conductivity and can effectively generate induced current, the gap between the damping fin and the permanent magnet is 0.5-1mm, friction between the damping fin and the permanent magnet is avoided while the damping effect is ensured, and friction between the damping fin and the permanent magnet is avoided while the damping effect is ensured. The adoption of the further scheme has the beneficial effects that when the pointer is vibrated and swung, the damping fin makes cutting magnetic induction line movement in a constant magnetic field formed by the permanent magnets, closed induction current can be generated inside the damping fin, and the eddy current can generate electromagnetic damping moment opposite to the swinging direction, so that the swinging amplitude of the pointer is reduced rapidly, and the pointer is stabilized as soon as possible. Preferably, two hangers are fixedly connected to the watchcase and symmetrically arranged along the axis of the watchcase, bosses are symmetrically arranged on the connec