CN206159123U - Sealed tooth pressure inlays instrument - Google Patents

Abstract

The utility model discloses a sealed tooth pressure inlays instrument, including main part, gyro wheel, bearing and pivot, the main part with the pivot interference is connected, the bearing is installed it is fixed through the retaining ring on the pivot, the internally piloting hole of gyro wheel with the excircle of bearing adopts the interference to connect, the excircle of gyro wheel evenly is equipped with a plurality of intensive arc grooves. The utility model discloses a sealed tooth pressure inlays instrument convenient to use saves the labour, simple structure, convenient operation and functional safety are reliable, and work efficiency is high, and it is tight to be applicable to the pressure interlocking who is used for the sealed tooth of large -scale centrifugal compressor broach sealing parts.

Description

The press-fitted instrument of sealing tooth

Technical field

The utility model is related to the press-fitted locking device that Large centrifugal compressors labyrinth seal part seals tooth, specifically It is to be related to a kind of press-fitted instrument of sealing tooth.

Background technology

Labyrinth seal is mainly used in Large centrifugal compressors, and labyrinth seal is fixed on as needed rotatable parts or fixed part On part, its effect is to prevent working gas leakage, sealing structure from seeing accompanying drawing 3, and diaphragm seal and locking steel wire collectively constitute sealing tooth, Behind sealing tooth indentation sealing groove inside, by steel wire elastic deformation fixing seal piece.

At present the press-fitted conventional practices of sealing tooth are to make Special chisel, and by artificial impact method tooth press-in will be sealed Seal groove, the method is completely dependent on artificial operation, and high labor intensive, inefficiency, quality is unstable.Therefore making one is needed The embedding instrument of sealing tooth is planted, by the way that instrument is arranged on general horizontal lathe knife rest, is rotated by lathe, steel wire is continuously pressed into In seal groove, thrust is uniform, high working efficiency, steady quality reliability.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of simple structure, easy to operate and functional safety reliability, The press-fitted instrument of the sealing tooth of high working efficiency.

In order to solve above-mentioned technical problem, the technical solution of the utility model is：The press-fitted instrument of one kind sealing tooth, including master Body, roller, bearing and pivot pin, the main body is connected with the pivot pin interference；The bearing is arranged on the pivot pin by gear Circle is fixed；The internal control hole of the roller is connected with the cylindrical employing interference of the bearing；The roller it is cylindrical be uniformly provided with it is many Individual intensive arc groove.

Preferably, the bearing is deep groove ball bearing, and the deep groove ball bearing simple structure is easy to use.

Preferably, the inner thickness of the roller is 12mm；The outside of the roller is press-fitted working position thickness 0.8mm；Roller inner thickness is 12mm, can guarantee that roller intensity；The press-fitted working position thickness in roller outside is 0.8mm, can be protected Card working position can smoothly go deep into inside seal groove.

The beneficial effects of the utility model are：1st, roller inner holes and bearing top circle are connected using interference, prevent the course of work There is axial displacement in middle roller；The cylindrical uniform intensive arc groove of roller, during press-fitted steel wire tension can be improved, close Collection arc groove forms intensive broken line in steel wire extrusion process, and the steel wire deformation on broken line turning point increases, by increasing steel Deformation of filament amount, improves the pretightning force of sealing tooth, better assures that press-fitted reliability, prevents sealing tooth from coming off；2nd, this practicality is new The simple structure of type, easy to operate and functional safety reliability, high working efficiency.

Description of the drawings

Fig. 1 is the structural representation that the utility model seals the press-fitted instrument of tooth；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is the structural representation for sealing tooth.

Specific embodiment

Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.Here it should be noted that For the explanation of these embodiments is used to help understand the utility model, but do not constitute to restriction of the present utility model.This Outward, as long as technical characteristic involved in the utility model disclosed below each embodiment does not constitute each other conflict Just can be mutually combined.

As shown in Figure 1 to Figure 2, the press-fitted instrument of the utility model sealing tooth is for centrifugal compressor labyrinth seal sealing tooth lock A kind of press-fitted instrument for tightly designing, when using, instrument is arranged on general horizontal lathe knife rest, is rotated by lathe, will Diaphragm seal and locking steel wire are continuously press-fitted in seal groove, and specifically, it includes main body 1, roller 2, bearing 3 and pivot pin 4, main body 1 is connected with the interference of pivot pin 4；Bearing 3 is arranged on pivot pin 4 and is fixed by back-up ring 5；Bearing 3 be deep groove ball bearing, the deep-groove ball axle Bearing structure is simple, easy to use；The internal control hole of roller 2 is connected with the cylindrical employing interference of bearing 3；Prevent roller in the course of work Generation axial displacement；The inner thickness of roller 2 is 12mm, to ensure the intensity of roller 2；The press-fitted working position thickness in the outside of roller 2 0.8mm, it is ensured that working position can smoothly go deep into inside seal groove；Cylindrical uniform the gathering of roller 2 is provided with multiple intensive circular arcs Groove 21, during press-fitted steel wire tension can be improved, and intensive arc groove 21 forms intensive broken line in steel wire extrusion process, The steel wire deformation on broken line turning point increases, and by increasing steel wire deflection, improves the pretightning force of sealing tooth, better assures that Press-fitted reliability, prevents sealing tooth from coming off.

Specifically, the press-fitted instrument main operational principle of the utility model sealing tooth is as follows：

1) the press-fitted instrument of sealing tooth is arranged on tool post of horizontal lathe, part to be press-fitted is arranged on Horizontal type lathe chuck On；

2) mobile lathe saddle, by diaphragm seal, locking steel wire seal groove bottom is co-pressed into；

3) lathe chuck is rotated, part drives press-fitted instrument roller 2 to rotate, the intensive arc groove 21 on roller 2 is cylindrical Tight steel wire, with the rotary seal piece of roller 2 and locking steel wire seal groove is pressed into, and steel wire produces pretightning force locking due to elastic deformation Diaphragm seal, continuous rolling motion completes to seal the press-fitted locking of tooth；

4) this instrument devises intensive arc groove 21 roller 2 is cylindrical, the steel wire in the course of work can effectively be tensioned, Prevent from skidding, by making steel wire exist with intensive broken line shape in sealing trench bottom steel wire extruding, equivalent to the shape on steel wire Into intensive uniform impact point, in each impact point position extra pretightning force is produced, it is ensured that the press-fitted quality of part sealing tooth Reliability, it is ensured that diaphragm seal will not depart from the course of the work because of centrifugal force or impulsive force from seal groove.

Embodiment of the present utility model is explained in detail above in association with accompanying drawing, but the utility model is not limited to be retouched The embodiment stated.For a person skilled in the art, it is right in the case of without departing from the utility model principle and spirit These embodiments carry out various changes, modification, replacement and modification, still fall within protection domain of the present utility model.

Claims (3)

1. a kind of sealing tooth is press-fitted instrument, including main body (1), roller (2), bearing (3) and pivot pin (4), it is characterised in that：It is described Main body (1) is connected with the pivot pin (4) interference；The bearing (3) is fixed by back-up ring (5) on the pivot pin (4)；Institute State the internal control hole of roller (2) to be connected with the cylindrical employing interference of the bearing (3)；The roller (2) it is cylindrical be uniformly provided with it is many Individual intensive arc groove (21).

2. the press-fitted instrument of tooth is sealed according to claim 1, it is characterised in that：The bearing (3) is deep groove ball bearing.

3. sealing tooth according to claim 1 or claim 2 is press-fitted instrument, it is characterised in that：The inner thickness of the roller (2) is 12mm；The press-fitted working position thickness in the outside of the roller (2) is 0.8mm.