CN216590530U - B2F-16-2000 limiting expansion joint - Google Patents
B2F-16-2000 limiting expansion joint Download PDFInfo
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- CN216590530U CN216590530U CN202122680091.6U CN202122680091U CN216590530U CN 216590530 U CN216590530 U CN 216590530U CN 202122680091 U CN202122680091 U CN 202122680091U CN 216590530 U CN216590530 U CN 216590530U
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Abstract
The utility model discloses a B2F-16-2000 limiting expansion joint, which belongs to the field of pipeline connection and comprises a body, a stud and a limiting expansion pipe, wherein a pressing ring is arranged outside the body, the limiting expansion pipe is arranged outside the body, the stud is movably sleeved inside the body and the pressing ring, a locking nut is sleeved on the external thread of the stud, a limiting screw is arranged outside the body, and a limiting nut is arranged outside the limiting screw; the telescopic joint sealing structure is large in caliber, high in bearing pressure and convenient to install, prevents damage to a pipeline due to temperature change, is suitable for water diversion, power stations, environmental protection, metallurgy and the like, is simple in structure and stable in performance, is convenient and simple to adjust and replace rubber sealing rings (sealing fillers), is reliable in sealing, has no external leakage, and is worthy of popularization and use.
Description
Technical Field
The utility model belongs to the technical field of pipeline connection, and particularly relates to a B2F-16-2000 limiting expansion joint.
Background
The B2F expansion joint (expansion joint) is mainly used for compensating the expansion deformation of the pipeline caused by temperature change, and also used for length compensation of the pipeline required by installation adjustment and the like, in addition, the limiting expansion joint is particularly suitable for connection in pipelines with vibration or certain inclination and turning, however, most of the existing B2F-16-2000 limiting expansion joints have smaller caliber and are difficult to be suitable for pipelines with higher pipeline pressure, so that the limitation exists, and therefore, the B2F-16-2000 limiting expansion joint is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a B2F-16-2000 limit expansion joint to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a B2F-16-2000 limiting expansion joint comprises a body, a stud and a limiting expansion pipe, wherein a gland is arranged outside the body, the limiting expansion pipe is arranged outside the body, the stud is movably sleeved inside the body and the gland, a locking nut is sleeved on the external thread of the stud, a limiting screw is arranged outside the body, and a limiting nut is arranged outside the limiting screw.
In a preferred embodiment, the flange on one side of the body is matched with the flange of the pipeline and the valve in size, the sealing rubber ring groove in an O shape is arranged on one side of the body, and the reinforcing rib is arranged inside the body.
As a preferable embodiment, the outer part of the gland is uniformly provided with screw holes, and the size of the gland is matched with that of the body.
In a preferred embodiment, the material of the limit telescopic pipe is Q355B low alloy, the size of the limit telescopic pipe is matched with that of flanges of a pipeline and a valve, and a middle flange is arranged outside the limit telescopic pipe.
In a preferred embodiment, a sealing ring is arranged inside the body, and the sealing ring is a vulcanized solid T-shaped rubber sealing ring.
Compared with the prior art, the utility model has the beneficial effects that:
the B2F-16-2000 limiting expansion joint is provided with the body, the gland, the limiting expansion pipe, the sealing ring, the limiting screw rod, the stud and the nut, has large caliber and high bearing pressure, is convenient for valve installation, prevents the damage to a pipeline due to temperature change, is suitable for water diversion, power stations, environmental protection, metallurgy and the like, has simple sealing ring structure and stable performance, is convenient and simple to adjust and replace a rubber sealing ring (sealing filler), is reliable in sealing, has no external leakage, and is worthy of popularization and use.
Drawings
FIG. 1 is a schematic front view of the structure of the present invention;
FIG. 2 is an enlarged view of the utility model at A in FIG. 1.
In the figure: 1. a body; 2. a gland; 3. limiting the telescopic pipe; 4. a stud; 5. locking the nut; 6. a limit screw; 7. and a limiting nut.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.
Referring to fig. 1 and 2, the utility model provides a B2F-16-2000 limiting expansion joint, comprising a body 1, a stud 4 and a limiting expansion pipe 3, in order to improve the practicability of the B2F-16-2000 limiting expansion joint, a gland 2 can be arranged outside the body 1, the limiting expansion pipe 3 is arranged outside the body 1, the stud 4 is movably sleeved inside the body 1 and the gland 2, the external thread of the stud 4 is sleeved with a locking nut 5, the external of the body 1 is provided with a limiting screw 6, the external of the limiting screw 6 is provided with a limiting nut 7, the flange at one side of the body 1 is matched with the flange of a pipeline and a valve in size, one side of the body 1 is provided with an O-shaped sealing rubber ring groove, the internal of the body 1 is provided with reinforcing ribs, the reinforcing ribs are uniformly distributed in the circumferential direction of the flange of the body 1, the rigidity of the flange is greatly increased, and the connection safety of the pipeline is ensured, the pressing surface between the elastic rubber sealing ring and the pressing surface between the elastic rubber sealing ring adopts special design inclination, the wedging effect is realized, screw holes are uniformly formed in the outer portion of the pressing cover 2, the size of the pressing cover 2 is matched with that of the body 1, the pressing cover 2 is made of Q355B low alloy structural steel, the structural form is a plate type with the screw holes uniformly distributed in the circumferential direction, the pressing surface between the pressing cover 2 and the elastic rubber sealing ring adopts special design inclination, the wedging effect is realized, the material of the limiting telescopic pipe 3 is Q355B low alloy, the limiting telescopic pipe 3 is matched with the flange sizes of a pipeline and a valve, the limiting telescopic pipe 3 adopts a Q355B low alloy structural steel welding structure, the flange adopts GB/T9115 butt welding steel pipe flange standard, and the flange sizes of the pipeline and the valve are matched. The wall thickness of the short pipe is provided with a larger allowance on the basis of the calculation value, the strength of the short pipe flange is ensured, and the requirement of 3mm abrasion allowance caused by sand-containing water flow in the service life is considered. Be equipped with on spacing flexible pipe 3's the nozzle stub and be used for spacing well flange, be used for the spacing of telescopic joint, vulcanize solid T shape rubber seal and body 1 on and the extrusion inclined plane of gland 2 and nozzle stub surface formation work sealed, body 1 inside sets up the sealing washer, the sealing washer is for vulcanize solid T shape rubber seal, well flange cooperation through spacing screw 6 and stop nut 7 and spacing flexible pipe 3, guarantee that the spacing is reliable and satisfy spacing requirement after the installation, stop screw 6 and double-screw bolt 4 combination, lock nut 5 is installed to the centre, can guarantee gland 2 evenly to compress tightly of sealing washer and provide sufficient sealing force, install two stop nut 7 at 6 afterbody of stop screw, can adjust flexible volume on the one hand, on the other hand can also play locking effect. When the pipeline is stretched, the distance between the body 1 and the limiting telescopic pipe 3 is increased, and two nuts at the tail part of the limiting screw 6 are in contact positioning with the right end surface of the flange in the middle of the telescopic pipe; when the pipeline extrudes, the distance between the body 1 and the telescopic pipe is reduced, the limit step of the body 1 is in contact positioning with the left end surface of the short pipe of the limit telescopic pipe 3, so that the designed telescopic amount is achieved, the rubber seal material adopts EPDM ethylene propylene diene monomer, and a sealing pair is formed by the extrusion inclined plane of the body 1 and the gland 2, the outer surface of the short pipe and a T-shaped solid high-quality wear-resistant rubber ring. The assembly of rubber circle is in the seal groove, install gland nut on gland 2 through the adjustment and guarantee certain decrement of compression, form certain sealed specific pressure, realize sealed, after gland nut locking on gland 2, form sufficient sealed specific pressure, make the telescopic joint realize zero leakage, T shape rubber seal adopts whole die-casting shaping, and the section designs into the inclined plane of the special shape area slope, the extrusion inclined plane is the wedge, when gland 2 compresses tightly, there is fine wedging effect, can guarantee the effective sealing of telescopic joint, this telescopic joint sealing washer simple structure, stable performance, and the adjustment is changed rubber seal circle (packing) convenient simple, it is reliably leak outward to seal.
The working principle and the using process of the utility model are as follows: firstly, when the pipeline is extruded, the distance between the body 1 and the telescopic pipe is reduced, the limit step of the body 1 is in contact positioning with the left end face of the short pipe of the limit telescopic pipe 3, so that the designed expansion amount is achieved, the rubber seal material adopts EPDM ethylene propylene diene monomer, and a sealing pair is formed by the extrusion inclined plane of the body 1 and the gland 2, the outer surface of the short pipe and a T-shaped solid high-quality wear-resistant rubber ring. The assembly of rubber circle is in the seal groove, install gland nut on gland 2 through the adjustment and guarantee certain decrement of compression, form certain sealed specific pressure, realize sealed, after gland nut locking on gland 2, form sufficient sealed specific pressure, make the telescopic joint realize zero leakage, T shape rubber seal adopts whole die-casting shaping, and the section designs into the inclined plane of the special shape area slope, the extrusion inclined plane is the wedge, when gland 2 compresses tightly, there is fine wedging effect, can guarantee the effective sealing of telescopic joint, this telescopic joint sealing washer simple structure, stable performance, and the adjustment is changed rubber seal circle (packing) convenient simple, it is reliably leak outward to seal.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a spacing telescopic joint of B2F-16-2000, includes body (1), double-screw bolt (4) and spacing telescopic tube (3), its characterized in that: the outer portion of the body (1) is provided with a gland (2), the limiting telescopic pipe (3) is arranged on the outer portion of the body (1), the stud (4) is movably sleeved inside the body (1) and the gland (2), the outer thread of the stud (4) is sleeved with a locking nut (5), the outer portion of the body (1) is provided with a limiting screw rod (6), and the outer portion of the limiting screw rod (6) is provided with a limiting nut (7).
2. The B2F-16-2000 limit expansion joint of claim 1, wherein: the flange on one side of the body (1) is matched with flanges of pipelines and valves in size, an O-shaped sealing rubber ring groove is formed in one side of the body (1), and reinforcing ribs are arranged inside the body (1).
3. The B2F-16-2000 limit expansion joint of claim 1, wherein: screw holes are uniformly formed in the outer portion of the gland (2), and the size of the gland (2) is matched with that of the body (1).
4. The B2F-16-2000 limit expansion joint of claim 1, wherein: the limiting telescopic pipe (3) is made of Q355B low alloy, the limiting telescopic pipe (3) is matched with flanges of a pipeline and a valve in size, and a middle flange is arranged outside the limiting telescopic pipe (3).
5. The B2F-16-2000 limit expansion joint of claim 1, wherein: the sealing ring is arranged in the body (1) and is a vulcanized solid T-shaped rubber sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122680091.6U CN216590530U (en) | 2021-11-04 | 2021-11-04 | B2F-16-2000 limiting expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122680091.6U CN216590530U (en) | 2021-11-04 | 2021-11-04 | B2F-16-2000 limiting expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216590530U true CN216590530U (en) | 2022-05-24 |
Family
ID=81643693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122680091.6U Active CN216590530U (en) | 2021-11-04 | 2021-11-04 | B2F-16-2000 limiting expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216590530U (en) |
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2021
- 2021-11-04 CN CN202122680091.6U patent/CN216590530U/en active Active
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