CN220354751U

CN220354751U - Large-caliber pipeline telescoping device

Info

Publication number: CN220354751U
Application number: CN202321837074.1U
Authority: CN
Inventors: 张勇; 金培芳; 沈小丽; 马莉; 邵中魁; 王佳昱
Original assignee: Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Current assignee: Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Priority date: 2023-07-13
Filing date: 2023-07-13
Publication date: 2024-01-16
Anticipated expiration: 2033-07-13

Abstract

The utility model relates to a large-caliber pipeline expansion device, and belongs to the field of water pump testing and pipeline connection. The utility model comprises a hollow inner tube, a combined sealing ring, a lifter, an outer sleeve and a guide rod, wherein the hollow inner tube is in clearance fit with the outer sleeve, the combined sealing ring is arranged at one end of the hollow inner tube, the fixed end and the movable end of the lifter are arranged on the end surfaces of a hollow inner tube flange and an outer sleeve flange, and the fixed end and the movable end of the guide rod are respectively arranged on the end surfaces of the hollow inner tube flange and the outer sleeve flange. The utility model has simple and reasonable structural design, is safe and reliable, reduces the labor intensity of workers, shortens the drainage time, saves the labor cost, improves the production efficiency and meets the use requirement.

Description

Large-caliber pipeline telescoping device

Technical Field

The utility model relates to a telescopic device, in particular to a large-caliber pipeline telescopic device which is used for compensating the length of a test pipeline in the water pump installation process and belongs to the field of water pump testing and pipeline connection.

Background

In the field of large pump test, a test pipeline is required to be connected with a water inlet and a water outlet of a water pump, and as the large pump is mostly a customized product, the central height of the water inlet and the water outlet and the distance between the flange end face and the axis of the pump are different, short pipes with various lengths are required to be equipped, and sometimes the connection of the pipeline is required to be welded at present; not only occupies a large storage space, but also the efficiency of the connecting pipeline is reduced.

Therefore, the device can customize the pipeline telescoping devices with different telescoping lengths according to actual demands, and has the advantages of simple and practical structure and high connection efficiency.

Because the large-caliber pipeline expansion device is large in size, the time and the labor are wasted when the vulnerable part sealing ring is replaced, the custom-made combined sealing ring is designed, the tightness of the sealing ring is adjusted, and the time for replacing the sealing ring by the pipeline expansion device can be greatly prolonged.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides the large-caliber pipeline expansion device which has the advantages of simple and reasonable structural design, reduced labor intensity of workers, shortened connection time, improved testing efficiency, saved labor cost and factory cost and improved testing efficiency of the water pump.

The utility model solves the problems by adopting the following technical scheme: the large-caliber pipeline expansion device comprises a hollow inner pipe, a combined sealing ring, a lifter, an outer sleeve and a guide rod, and is characterized in that: the hollow inner tube is in clearance fit with the outer sleeve, the combined sealing ring is arranged at one end of the hollow inner tube, the fixed end and the movable end of the lifter are arranged on the end faces of the hollow inner tube flange and the outer sleeve flange, and the fixed end and the movable end of the guide rod are respectively arranged on the end faces of the hollow inner tube flange and the outer sleeve flange.

Preferably, the utility model further comprises a jacking screw, wherein the jacking screw is fixed on the end surface of one end of the hollow inner tube through threads, and one end of the jacking screw is in protruding contact with the combined sealing ring; the pressing screw is screwed down to provide the required pressing force for the combined sealing ring, and the abrasion of the sealing surface of the combined sealing ring is compensated.

Preferably, the utility model further comprises limit nuts which are respectively arranged at the outermost sides of one ends of the lifter and the guide rod; plays a limiting role and prevents the telescopic tube from falling out.

Preferably, the combined sealing ring is a V-shaped combined sealing ring, the combined sealing ring comprises a top ring, a bottom ring and a group of cloth-clamping rubber V-shaped rings clamped in the middle, the top ring is made of special hardening materials and provided with a protrusion for supporting, and the bottom ring is made of reinforced cloth-clamping rubber and supports the pressure load.

Preferably, the power of the lifter adopts one of electric power, pneumatic power or hydraulic power; the motor is one of a common motor or a servo motor.

Preferably, the number of lifters according to the utility model is a double number and is symmetrically arranged around the outer jacket tube.

Compared with the prior art, the utility model has the following advantages and effects: the whole structure is simple and reasonable in design, the length is automatically extended, the labor intensity of workers is reduced, the installation time is shortened, and the production efficiency is improved; the accumulated reversing times of the telescopic sleeve can reach more than 20 ten thousand times through the combined sealing ring sealing and adjusting structure, the accumulated travel reaches 100km, and the time for replacing the sealing ring is greatly prolonged.

Drawings

Fig. 1 is a schematic diagram of a front view structure of an embodiment of the present utility model.

FIG. 2 is a schematic cross-sectional view of an embodiment A-A of the present utility model.

Fig. 3 is a partially enlarged schematic view of the structure of fig. 2.

FIG. 4 is a schematic view of a cross-sectional guide bar arrangement of an embodiment B-B of the present utility model.

Fig. 5 is a schematic view of C-C in fig. 2.

In the figure: the sealing device comprises a hollow inner tube 1, a combined sealing ring 2, a jacking screw 3, a lifter 4, an outer sleeve 5, a limit nut 6 and a guide rod 7.

Detailed Description

The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.

Examples.

Referring to fig. 1 to 5, the large-caliber pipeline expansion device of the embodiment comprises a hollow inner pipe 1, a customized combined sealing ring 2, a jacking screw 3, a lifter 4, an outer sleeve 5, a limit nut 6 and a guide rod 7, wherein the hollow inner pipe 1 is inserted into the outer sleeve 5, the hollow inner pipe 1 is in clearance fit with the outer sleeve 5, and the smallest clearance part is sealed by the combined sealing ring 2.

In this embodiment, two lifters 4 are provided, and the fixed end and the movable end of the lifters 4 are respectively disposed on the flange end faces of the hollow inner tube 1 and the flange end faces of the outer sleeve 5 and symmetrically disposed around the outer sleeve.

The power of the lifter 4 is not limited to electric, pneumatic and hydraulic; the electric motor is not limited to a common motor or a servo motor; the elevator needs to have a self-locking function.

The lifter 4 in the present embodiment employs a screw lifter 4.

In the embodiment, four guide rods 7 are provided, and the fixed ends and the movable ends of the guide rods 7 are respectively arranged on the flange end faces of the hollow inner tube 1 and the flange end faces of the outer sleeve 5 and are symmetrically arranged around the outer sleeve.

In the embodiment, a combined sealing ring 2 is arranged at one end of a hollow inner tube 1; the combined sealing ring is a V-shaped combined sealing ring and consists of a top ring, a bottom ring and a group of cloth clamping rubber V-shaped rings clamped in the middle, wherein the top ring is made of a special hardening material and provided with a protrusion for supporting, and the bottom ring is made of reinforced cloth clamping rubber and supports the pressure load.

In the embodiment, the jacking screw 3 is fixed on the end face of one end of the hollow inner tube 1 through threads, one end of the jacking screw 3 is in protruding contact with the combined sealing ring 2, and the jacking screw 3 is screwed to provide required pressing force for the combined sealing ring 2, so that abrasion of the sealing surface of the combined sealing ring 2 is compensated.

The limit nuts 6 in the embodiment are respectively arranged at the outermost sides of one ends of the lifter 4 and the guide rod 7; plays a limiting role and prevents the telescopic tube from falling out.

In the embodiment, the hollow inner tube 1 is shortened to the shortest length, and one end of the hollow inner tube can extend out of the flange surface of the outer sleeve 5; the combined sealing ring 2 is convenient to replace in later period.

From the above description, those skilled in the art will be able to practice.

In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present utility model. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present patent. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a heavy-calibre pipeline telescoping device, includes cavity inner tube (1), combination sealing washer (2), lift (4), outer tube (5) and guide arm (7), its characterized in that: the hollow inner tube (1) is in clearance fit with the outer sleeve (5), the combined sealing ring (2) is arranged at one end of the hollow inner tube (1), the fixed end and the movable end of the lifter (4) are arranged on the flange end faces of the hollow inner tube (1) and the outer sleeve (5), and the fixed end and the movable end of the guide rod (7) are respectively arranged on the flange end faces of the hollow inner tube (1) and the outer sleeve (5).

2. The large diameter pipe telescoping device of claim 1, wherein: the sealing device is characterized by further comprising a jacking screw (3), wherein the jacking screw (3) is fixed on the end face of one end of the hollow inner tube (1) through threads, and one end of the jacking screw (3) is in protruding contact with the combined sealing ring (2).

3. The large diameter pipe telescoping device of claim 1, wherein: the elevator further comprises a limit nut (6), wherein the limit nut (6) is arranged at the outermost sides of one ends of the elevator (4) and the guide rod (7) respectively.

4. The large diameter pipe telescoping device of claim 1, wherein: the combined sealing ring (2) is a V-shaped combined sealing, and the combined sealing ring (2) comprises a top ring, a bottom ring and a group of cloth-clamping rubber V-shaped rings clamped in the middle.

5. The large diameter pipe telescoping device of claim 1, wherein: the power of the lifter (4) adopts one of electric power, pneumatic power or hydraulic power.

6. The large diameter pipe telescoping device of claim 1, wherein: the number of the lifters (4) is two and the lifters are symmetrically arranged around the outer sleeve.