CN210344676U - Improved expansion joint at bottom of coal bunker - Google Patents

Abstract

The utility model discloses an improved generation coal storehouse bottom telescopic joint, including the axial telescopic cylinder, the axial telescopic cylinder includes telescopic cylinder and lower telescopic cylinder, go up the radial telescopic cylinder of fixedly connected with between telescopic cylinder and the lower telescopic cylinder, go up telescopic cylinder upper end through last fixed establishment fixedly connected with last ring flange, go up telescopic cylinder and the protruding fixed block that forms of part contact surface of last ring flange, telescopic cylinder lower extreme is through lower fixed establishment fixedly connected with lower ring flange down, telescopic cylinder forms fixed block down with the part contact surface arch of lower ring flange down, the upper end of going up telescopic cylinder is equipped with reinforcing mechanism. The utility model discloses a fixed establishment and lower fixed establishment in the setting make the telescopic joint become more convenient with the dismantlement of both ends ring flange, and the maintenance of the device of being convenient for is changed, and better leakproofness then can effectively reduce revealing of coal gas, sets up strengthening mechanism through the inside wall at last telescopic cylinder, can avoid the telescopic joint to take place because of the condition that the vibration drops when the coal feeding.

Description

Improved expansion joint at bottom of coal bunker

Technical Field

The utility model relates to an expansion joint technical field especially relates to an improved generation coal storehouse bottom expansion joint.

Background

The expansion joint (expansion joint) is mainly used for compensating the expansion deformation of the pipeline caused by temperature change and the length compensation of the pipeline required by installation adjustment and the like, and mainly comprises 3 structural forms of a bent pipe type expansion joint, a corrugated pipe expansion joint and a sleeve expansion joint, and expansion devices and installation expansion joints are often arranged on pipelines which are far away from pipelines of some cold gas stations for conveying, so that the push-pull force of the pipeline caused by thermal expansion and cold contraction is relieved.

Traditional telescopic joint all is both ends fixedly connected with ring flange, be in the same place telescopic joint and equipment are fixed through flange joint, need maintain or when changing the telescopic joint must dismantle two ring flanges just can, the operation is inconvenient, consuming time and wasting power, and traditional telescopic joint can't be according to the fixed degree of its inside fluidic pressure variation in time adjustment both ends junction, and can only vertically stretch out and draw back, the inside fluid of telescopic joint takes place easily to reveal when telescopic joint internal pressure grow, the telescopic joint also drops with equipment easily, danger is higher.

Therefore, an improved coal bunker bottom expansion joint is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the traditional expansion joint is not changed in the prior art, and providing an improved coal bunker bottom expansion joint.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an improved generation coal storehouse bottom telescopic joint, includes the axial telescopic cylinder, the axial telescopic cylinder includes telescopic cylinder and lower telescopic cylinder, go up the radial telescopic cylinder of fixedly connected with between telescopic cylinder and the lower telescopic cylinder, go up telescopic cylinder upper end through last fixed establishment fixedly connected with upper flange, go up telescopic cylinder and the protruding fixed block that forms of part contact surface of upper flange, telescopic cylinder lower extreme is through lower fixed establishment fixedly connected with lower flange dish down, telescopic cylinder forms fixed block down with the part contact surface arch of lower flange dish down, the upper end of going up telescopic cylinder is equipped with reinforcing mechanism.

Preferably, the upper fixing mechanism comprises a rotary fixing block rotatably connected to the lower side wall of the upper flange plate, and first permanent magnets which are mutually attracted are arranged in the rotary fixing block and the upper fixing block.

Preferably, the strengthening mechanism is including rotating the L shape dead lever of connecting at last telescopic cylinder inside wall, the other end fixedly connected with joint piece of dead lever, the lateral wall and the last ring flange inside wall of going up telescopic cylinder are equipped with joint piece assorted hole and recess.

Preferably, the lower fixing mechanism comprises a lower rotary fixing block rotatably connected to the upper side wall of the lower flange plate, second permanent magnets which are mutually attracted are arranged in the lower rotary fixing block and the lower fixing block, and an elastic rubber ring is arranged on the contact surface of the lower fixing block and the lower flange plate.

Preferably, a plurality of elastic strips are vertically and uniformly fixedly connected to the outer surface of the radial telescopic cylinder.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through setting up radial telescopic tube, when the inside pressure of telescopic joint was too big, partial pressure had dispersed pressure through radial telescopic tube along radial direction away, has cushioned partial axial pressure to avoid the too big equipment at telescopic joint both ends of causing the damage of axial pressure, have the guard action to equipment.

2. Through setting up fixed establishment and lower fixed establishment, when the telescopic joint breaks down and needs the maintenance or will change, can separate telescopic joint and the equipment at both ends in order to relax through rotatory fixed block, convenient operation is swift, has improved work efficiency.

3. Through setting up reinforcing mechanism, when the pressure of the fluid in the telescopic joint changes, blow to the wind of low pressure department by high pressure department and can blow the dead lever, the joint piece of the dead lever other end just can the joint to the hole with the recess in, further strengthened being connected of telescopic joint and ring flange, make factor of safety higher.

Drawings

Fig. 1 is a schematic view of an external structure of an improved coal bunker bottom expansion joint provided by the utility model;

FIG. 2 is a cross-sectional view of an improved expansion joint at the bottom of a coal bunker;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 4 is an enlarged schematic view of a portion B in fig. 2.

In the figure: the device comprises an axial telescopic cylinder 1, an upper telescopic cylinder 2, a lower telescopic cylinder 3, a radial telescopic cylinder 4, an upper fixing mechanism 5, an upper flange 6, an upper fixing block 7, a lower fixing mechanism 8, a lower flange 9, a lower fixing block 10, a reinforcing mechanism 11, an upper rotary fixing block 12, a first permanent magnet 13, a fixing rod 14, a clamping block 15, a hole 16, a groove 17, a lower rotary fixing block 18, a second permanent magnet 19 and an elastic strip 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, an improved coal bunker bottom expansion joint comprises an axial expansion cylinder 1, the axial expansion cylinder 1 comprises an upper expansion cylinder 2 and a lower expansion cylinder 3, a radial expansion cylinder 4 is fixedly connected between the upper expansion cylinder 2 and the lower expansion cylinder 3, when the pressure inside the expansion joint is too high, partial pressure is dispersed along the radial direction through the radial expansion cylinder 4, partial axial pressure is buffered, so that the damage to equipment at two ends of the expansion joint caused by the too high axial pressure is avoided, the equipment is protected, it is worth mentioning that a plurality of elastic strips 20 are vertically and uniformly fixedly connected to the outer surface of the radial expansion cylinder 4, the pressure in the pipe can be further buffered, the upper end of the upper expansion cylinder 2 is fixedly connected with an upper flange 6 through an upper fixing mechanism 5, specifically, the upper fixing mechanism 5 comprises an upper rotating fixing block 12 rotatably connected to the lower side wall of the upper flange 6, the first permanent magnets 13 which are mutually attracted are arranged in the upper rotary fixing block 12 and the upper fixing block 7, and the arrangement of the permanent magnets can prevent the rotary fixing block from offsetting after fixing the expansion joint and the equipment, so that the fixation is invalid.

The utility model discloses in, go up telescopic cylinder 2 and go up fixed block 7 in the protruding formation of the part contact surface of ring flange 6, the lower flange 9 of 8 fixedly connected with of lower fixed establishment of 3 lower extremes of telescopic cylinder, it is required to explain, lower fixed establishment of 8 is including rotating the lower rotatory fixed block 18 of connecting the lateral wall under on ring flange 9, when the telescopic joint breaks down and needs the maintenance or will change, can separate the telescopic joint with the equipment at both ends with relaxing through rotatory fixed block alright, convenient operation is swift, the work efficiency is improved, be equipped with the permanent ferromagnetism 19 of inter attraction in lower rotatory fixed block 18 and the lower fixed block 10, lower fixed block 10 is equipped with the elastic rubber circle with the contact surface of lower flange 9, can further prevent the interior fluidic of pipeline from revealing.

The utility model discloses in, fixed block 10 under the protruding formation of the part contact surface of lower telescopic tube 3 and lower flange 9, the upper end of going up telescopic tube 2 is equipped with reinforcing mechanism 11, it is concrete, reinforcing mechanism 11 is including rotating the dead lever 14 of the L shape of connecting at last telescopic tube 2 inside walls, the other end fixedly connected with joint piece 15 of dead lever 14, the lateral wall of going up telescopic tube 2 and 6 inside walls of last flange are equipped with 15 assorted holes 16 and recess 17 of joint piece, when the pressure of the fluid in the telescopic joint changes, the wind of blowing to low pressure department by high pressure department can blow dead lever 14, the joint piece 15 of the 14 other end of dead lever just can be in joint 16 holes and recess 17, further strengthened being connected of telescopic joint and flange, make factor of safety higher.

The utility model discloses its functional principle is explained to following mode of operation of accessible: the upper fixed block 7 on the lower side wall of the upper flange 6 is rotated before installation, so that a second permanent magnet 19 arranged in a lower rotating fixed block 18 and a lower fixed block 10 are mutually attracted and reinforced, the upper end of an upper telescopic cylinder 2 and the upper flange 6 are connected into a whole, the lower end of a lower telescopic cylinder 3 is also connected in the same way by rotating the lower fixed block 10, when high-pressure gas flows at the lower end to generate wind, the axial telescopic cylinder 1 can axially expand and contract, at the moment, an elastic rubber ring arranged on the contact surface of the lower fixed block 10 and a lower flange 9 can be extruded, so that the telescopic joint and the flange are connected more tightly, when the pressure in the telescopic joint is overlarge, partial pressure can be dispersed in the radial direction through the radial telescopic cylinder 4, partial axial pressure is buffered, and when the pressure of fluid in the telescopic joint changes, the fixed rod 14 can be blown by wind blown to a low-pressure position from the high-pressure position, the clamping block 15 at the other end of the fixing rod 14 is clamped into the hole 16 and the groove 17, so that the connection between the telescopic joint and the flange plate is further strengthened.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides an improved generation coal storehouse bottom telescopic joint, includes axial telescopic cylinder (1), its characterized in that, axial telescopic cylinder (1) is including telescopic cylinder (2) and lower telescopic cylinder (3), go up telescopic cylinder (2) and radially telescopic cylinder (4) of fixedly connected with between lower telescopic cylinder (3), go up telescopic cylinder (2) upper end through last fixed establishment (5) fixedly connected with upper flange dish (6), go up telescopic cylinder (2) and the protruding fixed block (7) of forming of part contact surface of upper flange dish (6), telescopic cylinder (3) lower extreme is through flange dish (9) under fixed establishment (8) fixedly connected with down, telescopic cylinder (3) and lower flange dish (9) the protruding fixed block (10) that forms of part contact surface down, the upper end of going up telescopic cylinder (2) is equipped with reinforcing mechanism (11).

2. An improved coal bunker bottom expansion joint as claimed in claim 1, wherein said upper fixing mechanism (5) comprises an upper rotary fixing block (12) rotatably connected to the lower side wall of the upper flange (6), and a first permanent magnet (13) attracting each other is provided in said upper rotary fixing block (12) and said upper fixing block (7).

3. An improved coal bunker bottom expansion joint as claimed in claim 1, wherein the reinforcing mechanism (11) comprises an L-shaped fixing rod (14) rotatably connected to the inner side wall of the upper expansion cylinder (2), the other end of the fixing rod (14) is fixedly connected with a clamping block (15), and the side wall of the upper expansion cylinder (2) and the inner side wall of the upper flange plate (6) are provided with a hole (16) and a groove (17) matched with the clamping block (15).

4. An improved coal bunker bottom expansion joint as claimed in claim 1, characterized in that said lower fixing mechanism (8) comprises a lower rotary fixing block (18) rotatably connected to the upper side wall of the lower flange (9), a second permanent magnet (19) attracting each other is arranged in said lower rotary fixing block (18) and said lower fixing block (10), and an elastic rubber ring is arranged on the contact surface between said lower fixing block (10) and said lower flange (9).

5. An improved coal bunker bottom expansion joint as claimed in claim 1, characterized in that a plurality of elastic strips (20) are vertically and uniformly fixedly connected to the outer surface of the radial expansion cylinder (4).

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