CN212839399U

CN212839399U - Mechanical seal for accurately detecting abrasion loss

Info

Publication number: CN212839399U
Application number: CN202021614825.XU
Authority: CN
Inventors: 尚明根
Original assignee: Wuxi Iger Bergman Technology Co ltd
Current assignee: Yanchi Equipment Technology Wuxi Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-03-30
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a mechanical seal of accurate detection of wearing and tearing volume, including fixed ring subassembly, rotating ring subassembly and determine module, rotating ring subassembly elasticity and sealed roof pressure are in on the fixed ring subassembly, the rotating ring subassembly includes solid fixed ring, coupling spring and rotating ring, the rotating ring passes through coupling spring elastic connection on solid fixed ring, rotating ring and fixed ring interval set up, determine module sets up between solid fixed ring and rotating ring, just determine module detects the rotating ring for solid fixed ring displacement on the axial direction, detects the displacement of rotating ring for solid fixed ring on the axial direction through determine module to real-time, accurate wearing and tearing volume that detects the rotating ring guarantees mechanical seal performance.

Description

Mechanical seal for accurately detecting abrasion loss

Technical Field

The utility model belongs to the mechanical seal field, in particular to mechanical seal of accurate detection of wearing and tearing volume.

Background

In mechanical seal mechanism, mostly use rotating ring subassembly and the sealed mode of stationary ring subassembly elastic contact, compensate the wearing and tearing volume through elastic displacement, but because cycle and the frequency of use make the wearing and tearing volume uncertain, can not be timely maintain and change the rotating ring, lead to gas leakage when reation kettle operation.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides a mechanical seal of accurate detection of wearing and tearing volume can be timely and accurate detection rotating ring's wearing and tearing volume, guarantees mechanical seal performance.

The technical scheme is as follows: in order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a mechanical seal of accurate detection of wearing and tearing volume, includes stationary ring subassembly, rotating ring subassembly and determine module, the elastic and sealed roof pressure of rotating ring subassembly is in on the stationary ring subassembly, the rotating ring subassembly includes solid fixed ring, coupling spring and rotating ring, the rotating ring passes through coupling spring elastic connection on solid fixed ring, the rotating ring sets up with the fixed ring interval, determine module sets up between solid fixed ring and rotating ring, just determine module detects the moving ring for solid fixed ring displacement on the axial direction.

Further, the detection assembly comprises a displacement sensor arranged on the fixed ring or the movable ring.

Further, the detection assembly comprises a strain sensor, an elastic body and a top column, wherein the strain sensor is arranged on the fixing ring, the top column is connected and arranged on the movable ring through the elastic body, and the elastic top of the top column is pressed on the strain sensor.

Further, the strain sensor is a resistance type strain gauge.

Furthermore, the strain sensor further comprises a sealing shell, the sealing shell covers the outer side of the strain sensor, and the sealing shell is provided with a movable through hole corresponding to the top column.

Furthermore, a guide sleeve is arranged on the sealing shell corresponding to the movable perforation, and the ejection column is arranged in the guide sleeve in a sealing and sliding mode.

Furthermore, a sealing ring is sleeved on the top column.

Further, the elastic body is a return spring.

Has the advantages that: the utility model discloses a detecting element detects the movable ring for solid fixed ring displacement in the axial direction to real-time, accurate detection movable ring's wearing and tearing volume guarantees mechanical seal performance.

Drawings

FIG. 1 is a schematic half-sectional view of the present invention;

FIG. 2 is a schematic structural diagram of a movable ring module of the present invention;

fig. 3 is a schematic structural diagram of the detection assembly of local a of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in the attached drawing 1, a mechanical seal for accurately detecting wear loss comprises a fixed ring component 1, a movable ring component 2 and a detection component 3, wherein the movable ring component 2 is elastically and hermetically pressed on the fixed ring component 1, the movable ring component 2 comprises a fixed ring 4, a connecting spring 5 and a movable ring 6, the movable ring 6 is elastically connected to the fixed ring 4 through the connecting spring 5, the movable ring 6 is elastically pressed on the fixed ring component to seal, the movable ring 6 is arranged at a distance from the fixed ring 4, the detection component 3 is arranged between the fixed ring 4 and the movable ring 6, the detection component 3 detects the displacement of the movable ring 6 relative to the fixed ring 4 in the axial direction, as the movable ring 6 is gradually worn in the using process, the movable ring 6 is far away from the fixed ring 4 through the connecting spring 5, the distance between the movable ring 6 and the fixed ring 4 is increased, the detection component 3 detects the displacement of the movable ring 6 relative to the fixed ring 4 in the axial direction, the abrasion loss of the movable ring is detected accurately in real time, the movable ring is maintained and replaced in time, and the mechanical sealing performance is guaranteed.

The first embodiment does, the detection component 3 is including setting up the displacement sensor on solid fixed ring 4 or rotating ring 6, detects the displacement of rotating ring 6 through displacement sensor, and simple structure is convenient, wherein the pencil 14 of detection component 3 is worn out to the cavity body.

The second embodiment is that, as shown in fig. 2 and fig. 3, the detecting assembly 3 includes a strain sensor 7, an elastic body 8 and a plunger 9, the strain sensor 7 is a resistance-type strain gauge, the strain sensor 7 is disposed on the fixing ring 4, the plunger 9 is connected to the moving ring 6 through the elastic body 8, the plunger 9 elastically pushes against the strain sensor 7, the elastic body 8 is a return spring, a connecting block 12 is disposed between the plunger 9 and the return spring, when the moving ring 6 is worn, the distance between the moving ring and the fixing ring is increased, the plunger 9 continuously pushes against the strain gauge through the elastic change of the elastic body 8, and meanwhile, the pushing pressure of the strain gauge is gradually decreased, and a detecting instrument connected to the strain gauge can detect the current change of the strain gauge. When the abrasion loss of the movable ring 6 reaches a certain degree, the jacking pressure of the jacking column 9 on the strain gauge is also reduced to a preset degree, and the movable ring 6 is reflected to the abrasion limit so as to be convenient for timely maintenance and replacement.

Still include sealed housing 10, sealed housing 10 covers the outside of establishing at strain sensor 7, just sealed housing 10 has seted up the activity perforation corresponding to fore-set 9, protects the foil gage through sealed housing 10, prevents to seal liquid flow pressure and causes the interference to the foil gage.

The sealing shell 10 is provided with a guide sleeve 13 corresponding to the movable perforation, the ejection column 9 is arranged in the guide sleeve 13 in a sealing and sliding mode, the sealing ring 11 is sleeved on the ejection column 9 and guided through the guide sleeve, and the fixed point performance of the axial displacement of the sealing shell is guaranteed.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A mechanical seal for accurately detecting abrasion loss is characterized in that: including stationary ring subassembly (1), rotating ring subassembly (2) and determine module (3), rotating ring subassembly (2) elasticity and sealed roof pressure are in on stationary ring subassembly (1), rotating ring subassembly (2) are including solid fixed ring (4), coupling spring (5) and rotating ring (6), rotating ring (6) are through coupling spring (5) elastic connection on solid fixed ring (4), rotating ring (6) and solid fixed ring (4) interval setting, determine module (3) set up between solid fixed ring (4) and rotating ring (6), just determine module (3) detect rotating ring (6) for solid fixed ring (4) displacement on the axial direction.

2. A mechanical seal with accurate wear detection according to claim 1, wherein: the detection assembly (3) comprises a displacement sensor arranged on the fixed ring (4) or the movable ring (6).

3. A mechanical seal with accurate wear detection according to claim 1, wherein: the detection assembly (3) comprises a strain sensor (7), an elastic body (8) and a support pillar (9), the strain sensor (7) is arranged on the fixing ring (4), the support pillar (9) is connected and arranged on the movable ring (6) through the elastic body (8), and the support pillar (9) elastically supports against the strain sensor (7).

4. A mechanical seal with accurate wear detection according to claim 3, wherein: the strain sensor (7) is a resistance type strain gauge.

5. A mechanical seal with accurate wear detection according to claim 3, wherein: the strain sensor is characterized by further comprising a sealing shell (10), wherein the sealing shell (10) covers the outer side of the strain sensor (7), and the sealing shell (10) is provided with a movable through hole corresponding to the top column (9).

6. A mechanical seal with accurate wear detection according to claim 5, wherein: a guide sleeve (13) is arranged on the sealing shell (10) corresponding to the movable perforation, and the ejection column (9) is arranged in the guide sleeve (13) in a sealing and sliding manner.

7. A mechanical seal with accurate wear detection according to claim 5, wherein: and a sealing ring (11) is sleeved on the top column (9).

8. A mechanical seal with accurate wear detection according to claim 3, wherein: the elastic body (8) is a return spring.