CN104209918B

CN104209918B - Plunger displacement pump packing compresses skeleton and application process

Info

Publication number: CN104209918B
Application number: CN201410452543.7A
Authority: CN
Inventors: 徐承韬
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-09-09
Filing date: 2014-09-09
Publication date: 2016-05-25
Anticipated expiration: 2034-09-09
Also published as: CN104209918A

Abstract

Plunger displacement pump packing compresses skeleton and application process is oil field plunger pump technique, and it is relying on axial compressive force by packing crimp sealing, changes into directly and realizes sealing with radial pressure compression packing; It has overcome the shortcoming that other technology exists, it is that, plastic deformation good material lower by hardness such as rigid plastics, nylon, copper, aluminium made plunger displacement pump packing and compressed skeleton, this device is a pipe, is respectively arranged with cylindrical mating surface, compresses the conical surface, buffer memory groove and lip on pipe; Pipe inner surface is 5 ° of-50 ° of taperings, cone mouth edge thickness is not less than 0.1mm, at the bottom of inner cone, there is seal lip inner side, lip inner bevel is negative 3-15 °, the outer oblique angle of lip is 30-60 °, have buffer memory groove at lip and bottom, compression conical surface junction, buffer memory trench bottom thickness is at 0.5-5mm, and pipe endoporus and outer diameter of a circle are poor is 10mm-30mm.

Description

Plunger displacement pump packing compresses skeleton and application process

Technical field: the present invention relates to oil field plunger pump technique, especially plunger displacement pump packing compresses skeleton and application process.

Background technology: plunger displacement pump is for sealing used various packings at present, mostly to adopt braiding to form, when use, rely on and apply axial compressive force, packing distortion is sealed, such result, easily causes packing loss of elasticity, sealing surface wear to lose efficacy, and the term of validity is short, cause changing frequently artificial, high material consumption.

Summary of the invention: the object of this invention is to provide a kind of simple in structure, the plunger displacement pump packing that can ensure packing long service life compresses skeleton and application process, relying on axial compressive force by packing crimp sealing, change into directly and compress packing realization sealing by radial pressure; It has overcome the shortcoming that other technology exists, the object of the present invention is achieved like this,, plastic deformation good material lower by hardness such as rigid plastics, nylon, copper, aluminium made plunger displacement pump packing and compressed skeleton, this device is a pipe, is respectively arranged with cylindrical mating surface, compresses the conical surface, buffer memory groove and lip on pipe; Pipe inner surface is 5 °--50 ° of taperings, and cone mouth edge thickness is not less than 0.1mm, and at the bottom of inner cone, there is seal lip inner side, lip inner bevel is negative 3-15 °, the outer oblique angle of lip is 30-60 °, has buffer memory groove at lip and bottom, compression conical surface junction, and buffer memory trench bottom thickness exists

0.5-5mm, pipe endoporus and outer diameter of a circle are poor is 10mm-30mm.

The width of strengthening corner angle is 0.1-3mm.

Using method, puts into this device packing and compresses, and makes packing shape consistent with this device inner surface configuration, the job requirement of endoporus size conforms.

Under the pressure ring thrust effect at packing two ends, the radial compaction power sealed working face that relies on this device inner conical surface gradient to produce, plays sealing effectiveness, and meanwhile, lip can prevent that plunger from overflowing annular seal space while reciprocating motion.

Meaning of the present invention is: effectively solved packing and relied on end face to compress deformable seal plunger working face, cause the packing elasticity term of validity shorter, the effectively shorter difficult problem of duty cycle, the Acceptable life of packing extends more than 10 times, save maintenance time in a large number, significantly saved maintenance manpower, material resources.

Brief description of the drawings: Fig. 1 is that plunger displacement pump packing compresses the structural representation of skeleton, in figure 1, cylindrical mating surface 2, compress the conical surface 3, buffer memory groove 4, lip.

Fig. 2 is buffer memory groove enlarged drawing.

Fig. 3 is the enlarged drawing of strengthening corner angle.

Detailed description of the invention: embodiment 1, the present invention are a pipe, be respectively arranged with cylindrical mating surface 1, compress the conical surface 2, buffer memory groove 3 and lip 4 on pipe; The outside of pipe is cylindrical mating surface 1; At the bottom of inner cone, there is seal lip 4 inner side; There is buffer memory groove 3 at lip 4 and the compression conical surface 2 bottoms, junctions.

Embodiment 2, pipe inner surface are 5 °--50 ° of taperings, cone mouth edge thickness is not less than 0.1mm.

Embodiment 3, lip 4 inner bevels are negative 3-15 °, and the outer oblique angle of lip is 30-60 °.

Embodiment 4. buffer memory trench bottom thickness is 0.5-5mm.

Embodiment 5, pipe endoporus and outer diameter of a circle are poor is 10mm-30mm.

The width of embodiment 6, reinforcement corner angle is 0.1-3mm.

Embodiment 7, application process of the present invention, put into this device packing and compress, and makes packing shape consistent with this device inner surface configuration, the job requirement of endoporus size conforms; Under the pressure ring thrust effect at packing two ends, the radial compaction power sealed working face that relies on this device inner conical surface gradient to produce, plays sealing effectiveness, and meanwhile, lip seal ring can prevent that plunger from overflowing annular seal space while reciprocating motion.

Claims

1. plunger displacement pump packing compresses skeleton, it is characterized in that: it is a pipe, is respectively arranged with cylindrical mating surface (1), compresses the conical surface (2), buffer memory groove (3) and lip (4) on pipe; The outside of pipe is cylindrical mating surface (1); At the bottom of inner cone, there is lip (4) inner side; There is buffer memory groove (3) at lip (4) and bottom, the compression conical surface (2) junction.

2. plunger displacement pump packing according to claim 1 compresses skeleton, it is characterized in that: pipe inner surface is 5 ° of-50 ° of taperings, and cone mouth edge thickness is not less than 0.1mm.

3. plunger displacement pump packing according to claim 1 compresses skeleton, it is characterized in that: lip (4) inner bevel is negative 3-15 °, and the outer oblique angle of lip (4) is 30-60 °.

4. plunger displacement pump packing according to claim 1 compresses skeleton, it is characterized in that: buffer memory groove (3) bottom thickness is 0.5-5mm.

5. plunger displacement pump packing according to claim 1 compresses skeleton, it is characterized in that: pipe endoporus and outer diameter of a circle are poor is 10mm-30mm.

6. the application process of plunger displacement pump packing compression skeleton described in claim 1, is characterized in that: packing is put into this device and compress, make packing shape consistent with this device inner surface configuration, the job requirement of endoporus size conforms; Under the pressure ring thrust effect at packing two ends, the radial compaction power sealed working face that relies on this device inner conical surface gradient to produce, plays sealing effectiveness, and meanwhile, lip seal ring can prevent that plunger from overflowing annular seal space while reciprocating motion.