CN218242926U

CN218242926U - Sealing structure for preventing oil leakage of compressor probe tail wire

Info

Publication number: CN218242926U
Application number: CN202222260787.8U
Authority: CN
Inventors: 王忠雄; 张国良; 罗宽勇
Original assignee: China Petroleum and Chemical Corp; Sinopec Hubei Chemical Fertilizer Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Hubei Chemical Fertilizer Co
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-01-06
Anticipated expiration: 2032-08-26

Abstract

The utility model provides a prevent seal structure of compressor probe tail-wire oil leak, including casing joint, casing joint is provided with the internal thread groove, the internal thread groove is used for installing lock nut, be used for installing the sealing gasket subassembly in the internal thread groove, the sealing gasket subassembly includes two at least outer hard sealing gaskets, be equipped with two at least inner layer soft sealing gaskets between two outer hard sealing gaskets, the inner layer soft sealing gasket is eccentric pad, two inner layer soft sealing gaskets staggered arrangement, outer hard sealing gasket and inner layer soft sealing gasket lateral part have all been paintd glue. The utility model provides a seal structure adopts the mutual dislocation installation of a plurality of eccentric inlayer soft sealing pads, and outer stereoplasm is sealed to fill up and the cooperation of inlayer soft sealing pad is used, all has fine sealed effect to oil leak and the outer oil leak of tail-wire between the line footpath of probe tail-wire.

Description

Sealing structure for preventing oil leakage of compressor probe tail wire

Technical Field

The utility model belongs to the sealed field of compressor probe, in particular to prevent seal structure of compressor probe tail-line oil leak.

Background

At present, most of the large-scale compressor shafting measuring probes (including vibration probes and displacement probes) in China adopt American Bentley 3300 series or 3500 series probes or American Palis TM series probes, and the probes of the two manufacturers are basically used, wherein the tail wire diameter is 3.6mm, and the connecting joint diameter is 7.2mm.

Because the probe is installed at the periphery of the rotor, a probe signal passes through the compressor shell through the probe tail wire and then is transmitted to the prepositive device, when the probe tail wire passes through the compressor shell, if the sealing is not good, lubricating oil easily seeps out from the periphery of the probe tail wire, so that the lubricating oil is leaked, resources are wasted, the environment is polluted, and potential safety hazards are easily formed. Firstly, a plurality of layers of sealing gaskets are used for adding a polytetrafluoroethylene tape to wind and inject 704 glue, the sealing time is not long, and the 704 glue is easy to loosen after long-time vibration of a compressor, so that lubricating oil leakage is caused. Secondly, the quick-drying sealant is poured, and the method has good effect on preventing oil leakage, but the maintenance is troublesome. When in maintenance, the quick-drying adhesive is difficult to dig out, and the probe tail wire is easy to be damaged, even damaged. And thirdly, a conical sealing plug is added, and the sealing plug is made of easily deformable rubber materials, so that the sealing performance is better, and the defects that the sealing plug needs to be specially customized, the use flexibility is poor, and the compressor is easy to loosen after being vibrated for a long time to generate leakage are overcome. Fourth, a special tail wire connector is made at the junction of the threading tube and the compressor housing, which is a disadvantage of the method that the connector is complicated to make and it is inconvenient to install and thread the probe.

Disclosure of Invention

In view of the technical problem that the background art exists, the utility model provides a prevent seal structure of compressor probe tail-line oil leak, the utility model provides a seal structure adopts the mutual dislocation installation of a plurality of eccentric inlayer soft sealing gasket, and outer stereoplasm is sealed to seal and is sealed the cooperation of filling up with the inlayer soft sealing gasket and use, and oil leak and the outer oil leak of tail-line all have fine sealed effect between the line footpath of probe tail-line.

In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:

the utility model provides a prevent seal structure of compressor probe tail-line oil leak, including casing joint, casing joint is provided with the internal thread groove, the internal thread groove is used for installing lock nut, be used for installing the sealing gasket subassembly in the internal thread groove, the sealed pad subassembly includes two at least outer hard sealing pads, be equipped with two at least inner soft sealing pads between two outer hard sealing pads, the inner soft sealing pad is eccentric pad, two inner soft sealing pads staggered arrangement, outer hard sealing pad and the sealed lateral part of inner soft sealing pad have all been paintd glue.

Preferably, the outer hard sealing gasket is made of red copper or aluminum materials.

Preferably, the inner layer soft sealing gasket is made of a silica gel material.

Preferably, the number of the outer layer hard sealing gaskets is two, and two inner layer soft sealing gaskets are arranged between the two outer layer hard sealing gaskets.

Preferably, the two inner-layer soft sealing gaskets are arranged in a rotational symmetry mode, and the threading holes of the two inner-layer soft sealing gaskets are mutually staggered to clamp the tail line of the probe.

Preferably, the glue is a sealant.

Preferably, the inner layer soft sealing gasket and the outer layer hard sealing gasket are both circular rings, the inner layer soft sealing gasket is provided with a circular threading hole, the circular threading hole is not concentric with the inner layer soft sealing gasket, and the diameter of the circular threading hole is 0.5-1mm larger than that of the tail wire of the probe.

Preferably, the outer layer hard sealing gasket is used for bearing 50 to 80N pressure.

This patent can reach following beneficial effect:

the utility model provides a seal structure adopts the mutual dislocation installation of a plurality of eccentric inlayer soft sealing pads, and outer stereoplasm is sealed to fill up and the cooperation of inlayer soft sealing pad is used, all has fine sealed effect to oil leak and the outer oil leak of tail-wire between the line footpath of probe tail-wire.

Drawings

The invention will be further described with reference to the following drawings and examples:

FIG. 1 is a view of the structure of the present invention;

FIG. 2 is a layout diagram of the outer hard sealing gasket and the inner soft sealing gasket of the present invention;

fig. 3 is a development view of the outer layer hard sealing gasket and the inner layer soft sealing gasket of the present invention.

In the figure: the device comprises an outer-layer hard sealing gasket 1, an inner-layer soft sealing gasket 2, a shell connecting joint 3, a locking nut 4, a glue layer 5 and a probe tail wire 6.

Detailed Description

The preferable scheme is as shown in fig. 1 to fig. 3, a sealing structure for preventing oil leakage of compressor probe tail line, comprising a shell connecting joint 3, wherein the shell connecting joint 3 is provided with an internal thread groove, the internal thread groove is used for installing a locking nut 4, the internal thread groove is used for installing a sealing gasket component, the sealing gasket component comprises at least two outer hard sealing gaskets 1, at least two inner soft sealing gaskets 2 are arranged between the two outer hard sealing gaskets 1, the inner soft sealing gaskets 2 are eccentric gaskets, the two inner soft sealing gaskets 2 are arranged in a staggered manner, glue is smeared on the side portions of the outer hard sealing gaskets 1 and the inner soft sealing gaskets 2, and the glue is a sealing glue.

Further, the outer hard sealing gasket 1 is made of red copper or aluminum material; the inner layer soft sealing gasket 2 is made of silica gel. In this embodiment, when the diameter of the probe tail wire 6 is 7.2mm, the diameter of a single core is 2mm, the threading holes of the outer hard sealing gasket 1 and the inner soft sealing gasket 2 are both 8mm, specifically, the outer hard sealing gasket 1 is a phi 20x8x3mm concentric red copper gasket, and the inner soft sealing gasket 2 is a phi 20x8x3mm eccentric silica gel gasket. When the probe tail wire is installed, only a small amount of sealant is coated between each layer of sealing gasket, and the silicon rubber gasket is deformed to a certain degree by using proper torque force, so that the probe tail wire can be clamped tightly without damaging a signal lead in the probe tail wire, and the dual effects of preventing oil leakage between wire diameters and overcoming oil leakage of a tail wire sheath are achieved. Through field installation tests, the sealing method is simple and practical, has a good effect, and solves the problem of oil leakage of the tail wire of the compressor probe.

Further, the quantity of outer layer hard sealing gasket 1 is two, is equipped with two inlayer soft sealing gaskets 2 between two outer layer hard sealing gaskets 1, and two inlayer soft sealing gaskets 2 rotational symmetry set up, and two inlayer soft sealing gasket 2's through wires hole is crisscross each other and is used for pressing from both sides the probe tail line tightly.

The utility model discloses outer layer hard sealing pad 1 can bear 50 to 80N pressure can, inner layer soft sealing pad 2 is two-layer or multilayer (chooseing for use two-layer or multilayer according to the sealed condition), and the material chooses for use resistant oil, fire-retardant, insulating good, elasticity good, intensity high, temperature resistant 250 ℃ silica gel can. The manufacturing method comprises the following steps:

1. manufacturing a sealing gasket:

1.1, manufacturing an outer-layer hard sealing gasket: the material is red copper or aluminum material, and the proper size is selected according to the field condition, such as the sealing gasket of the vibration and displacement probe is phi 20x8x3mm, and the sealing gasket of the temperature probe is phi 18x3x3mm.

1.2, manufacturing an inner layer soft sealing gasket 2: a silica gel plate with the thickness of 3mm is adopted, two proper punches are selected according to conditions, such as punches with the diameter phi of 20mm and the diameter phi of 8mm for sealing gaskets of a vibration probe and a displacement probe, and punches with the diameter phi of 18mm and the diameter phi of 3mm for a temperature probe, so that the inner-layer soft sealing gasket is manufactured.

2. Installing a sealing gasket:

the gap voltage of the displacement probe of the compressor is adjusted in place, after the probe is fixed, the tail line of the probe penetrates through the threading holes of the shell of the compressor and then sequentially penetrates through the four sealing gaskets, when the sealing gaskets penetrate, a small amount of sealing glue is coated on two surfaces of each layer of sealing gasket, and then the layers of sealing gaskets are placed in the holes of the shell connecting joint 2. Note that: the threading holes of the two inner-layer soft sealing gaskets 2 need to be staggered to clamp the tail line of the probe, then the locking nut is screwed, the torque is about 15 to 22N.m, and the inner-layer soft sealing gaskets slightly press the tail line, so that oil leakage between the wire diameters is prevented, and oil leakage of the outer skin of the tail line is overcome.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a prevent seal structure of compressor probe tail-line oil leak, includes casing attach fitting (3), and casing attach fitting (3) are provided with the internal thread groove, and the internal thread groove is used for installing lock nut (4), its characterized in that: be used for installing the sealing gasket subassembly in the internal thread inslot, the sealed subassembly that fills up includes two at least outer hard sealing gaskets (1), is equipped with two at least inner soft sealing gaskets (2) between two outer hard sealing gaskets (1), and inner soft sealing gasket (2) are eccentric pad, and two inner soft sealing gasket (2) staggered arrangement, and outer hard sealing gasket (1) and inner soft sealing gasket (2) lateral part have all been paintd glue.

2. The seal structure for preventing oil leakage of compressor probe tail wire according to claim 1, characterized in that: the outer layer hard sealing gasket (1) is made of red copper or aluminum material.

3. The seal structure for preventing oil leakage of compressor probe tail wire according to claim 1, characterized in that: the inner layer soft sealing gasket (2) is made of silica gel.

4. The sealing structure for preventing oil leakage of compressor probe tail wire according to claim 1, characterized in that: the number of the outer hard sealing gaskets (1) is two, and two inner soft sealing gaskets (2) are arranged between the two outer hard sealing gaskets (1).

5. The seal structure for preventing oil leakage of compressor probe tail wire according to claim 4, characterized in that: the two inner-layer soft sealing gaskets (2) are arranged in a rotational symmetry mode, and the threading holes of the two inner-layer soft sealing gaskets (2) are mutually staggered to clamp the tail wire of the probe.

6. The seal structure for preventing oil leakage of compressor probe tail wire according to claim 1, characterized in that: the glue is a sealant.

7. The seal structure for preventing oil leakage of compressor probe tail wire according to claim 5, characterized in that: the inner layer soft sealing gasket (2) and the outer layer hard sealing gasket (1) are both in a circular ring shape, the inner layer soft sealing gasket (2) is provided with a circular threading hole, the circular threading hole is not concentric with the inner layer soft sealing gasket (2), and the diameter of the circular threading hole is 0.5-1mm larger than that of the tail wire of the probe.

8. The seal structure for preventing oil leakage of compressor probe tail wire according to claim 1, characterized in that: the outer layer hard sealing gasket (1) is used for bearing 50 to 80N pressure.