CN215891510U

CN215891510U - Flange type reducing expansion joint

Info

Publication number: CN215891510U
Application number: CN202121663506.2U
Authority: CN
Inventors: 顾益铭; 顾桂标
Original assignee: Jianhu Yiming Hydraulic Machinery Co ltd
Current assignee: Jianhu Yiming Hydraulic Machinery Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-02-22
Anticipated expiration: 2031-07-21

Abstract

The utility model relates to a flange type reducing telescopic joint which comprises a telescopic mechanism and a reducing mechanism, wherein the reducing mechanism is arranged at the left end of the telescopic mechanism, the telescopic mechanism comprises a connecting pipe, a fixing screw is arranged on the outer surface of the connecting pipe, a sliding groove is formed in the inner wall of the connecting pipe, a sliding block is arranged inside the sliding groove, a movable pipe is arranged on the outer surface of the sliding block, external threads are formed in the outer surface of the movable pipe, a telescopic spring is arranged on the left side of the connecting pipe, a telescopic rod is arranged inside the telescopic spring, and the reducing mechanism comprises a sealing washer. This flange formula reducing expansion joint makes the device can stretch out and draw back and reset through the combined operation of expanding spring and slider, and when the pipeline inflation, through the elastic layer, the protection pipeline reduces the rigidity contact, prevents that the pipeline is damaged, makes the elastic layer when the pipeline recovers through the elastic potential energy of deformation spring, and the elastic layer resets.

Description

Flange type reducing expansion joint

Technical Field

The utility model relates to the technical field of flange connection, in particular to a flange type reducing expansion joint.

Background

The flange connection is that two pipelines, pipe fittings or equipment are respectively fixed on a flange plate, a flange pad is arranged between the two flange plates and is fastened together by bolts, the connection is completed, some pipe fittings and equipment are provided with the flange plates, and the flange connection also belongs to the flange connection, is an important connection mode for pipeline construction, is convenient to use and can bear larger pressure, and the flange connection is very wide in use in industrial pipelines.

At present, in the pipeline installation engineering, axial displacement and a certain amount of deflection and eccentricity of a pipeline are often caused due to mechanical vibration, temperature and the like of equipment, so that the equipment is damaged and the pipeline is bent.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a flange type reducing expansion joint which has the advantages of being capable of expanding and reducing, and the like, and solves the problem that expansion and reducing cannot be achieved.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a flange formula reducing expansion joint, includes telescopic machanism and reducing mechanism, telescopic machanism's left end is provided with reducing mechanism, telescopic machanism includes the connecting pipe, the surface of connecting pipe is provided with the fixed screw, the inner wall processing of connecting pipe has the spout, the inside of spout is provided with the slider, the surface of slider is provided with the activity pipe, the surface processing of activity pipe has the external screw thread, the left side of connecting pipe is provided with expanding spring, expanding spring's inside is provided with the telescopic link.

Further, the reducing mechanism comprises a sealing washer, a joint pipe is fixedly mounted on the left side of the sealing washer, a reinforcing screw is inserted into the outer surface of the joint pipe, a deformation spring is fixedly mounted on the inner wall of the joint pipe, an elastic pipe is fixedly mounted at one end, far away from the joint pipe, of the deformation spring, and an internal thread is machined on the inner wall of the elastic pipe.

Furthermore, the telescopic length of the telescopic rod is consistent with that of the telescopic spring, and the telescopic rod is fixedly connected with the connecting pipe and the sealing washer.

Further, the movable pipe is matched with the connecting pipe, and a lubricant is added into the sliding groove.

Further, the quantity of set screw is two, the set screw uses the perpendicular bisector of connecting pipe as symmetry axis symmetry distribution.

Furthermore, the number of the deformation springs is multiple, and the distance between the deformation springs is consistent.

Further, the elastic tube is made of elastic materials, and the sealing washer is matched with the elastic tube.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

this flange formula reducing expansion joint makes the device can stretch out and draw back and reset through the combined operation of expanding spring and slider, and when the pipeline inflation, through the elastic layer, the protection pipeline reduces the rigidity contact, prevents that the pipeline is damaged, makes the elastic layer when the pipeline recovers through the elastic potential energy of deformation spring, and the elastic layer resets.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: the device comprises a 1 telescopic mechanism, a 101 connecting pipe, 102 fixed screws, 103 sliding grooves, 104 sliding blocks, 105 telescopic springs, 106 telescopic rods, 107 movable pipes, 108 external threads, a 2 diameter-changing mechanism, 201 sealing gaskets, 202 joint pipes, 203 reinforcing screws, 204 deformation springs, 205 elastic pipes and 206 internal threads.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a flange type reducing expansion joint in this embodiment includes an expansion mechanism 1 and a reducing mechanism 2, the reducing mechanism 2 is disposed at a left end of the expansion mechanism 1, the expansion mechanism 1 includes a connecting pipe 101, the connecting pipe 101 is used for fixedly connecting a pipeline and the joint, a fixing screw 102 is inserted into an outer surface of the connecting pipe 101, the fixing screw 102 is used for reinforcing a limiting force, a sliding groove 103 is formed in an inner wall of the connecting pipe 101, the sliding groove 103 is used for reducing a friction force generated when the sliding block 104 moves and increasing an operation stability of the assembly, a sliding block 104 is clamped inside the sliding groove 103, the sliding block 104 is used for driving the movable pipe 107 to move to achieve an expansion function of the joint, a movable pipe 107 is fixedly mounted on an outer surface of the sliding block 104, the movable pipe 107 is used for conducting an external force generated when the pipeline deforms, an external thread 108 is formed on an outer surface of the movable pipe 107, the external thread 108 is used for fixedly connecting the movable pipe 107 and the joint pipe 202, an extension spring 105 is fixedly installed on the left side of the connecting pipe 101, the extension spring 105 is used for realizing the resetting of the assembly by utilizing elastic potential energy, and an extension rod 106 is fixedly installed inside the extension spring 105.

The working principle is as follows: when using, because temperature or vibrations deformation when the pipeline, will exert external force to elastic tube 205, make elastic tube 205 follow deformation, and compression deformation spring 204, prevent that the pipeline from damaging or life is short excessively because the restriction of joint, when the pipeline recovers, utilize the elastic potential energy of deformation spring 204 self to make elastic tube 205 reset, avoid appearing the condition that the deformation loses utility, when pipeline axial deformation, exert external force to movable pipe 107, expanding spring 105 and telescopic link 106 shrink this moment, slider 104 removes in connecting pipe 101, make this joint can stretch out and draw back the change length, adapt to the deformation of pipeline, prevent the pipeline damage, when the pipeline recovers, utilize expanding spring 105's elastic potential energy to make movable pipe 107 restore to the throne, dislocation when telescopic link 106 is used for preventing the spring shrink, disturb the subassembly normal operating.

Because telescopic link 106 prevents expanding spring 105 dislocation, so telescopic link 106 should follow expanding spring 105 motion, and the flexible length of telescopic link 106 is unanimous with expanding spring 105, and telescopic link 106 is fixed connection with the relation of being connected of connecting pipe 101 and seal ring 201 for can compress expanding spring 105 when activity pipe 107 removes.

The movable pipe 107 is matched with the connecting pipe 101, so that the movable pipe 107 can enter the connecting pipe 101, the whole length of the joint is changed, the lubricant is added into the sliding groove 103, the friction force of the operation of the assembly is reduced, and the service life of the assembly is prolonged.

The number of the fixing screws 102 is two, and the fixing screws 102 are symmetrically distributed by taking the perpendicular bisector of the connecting pipe 101 as a symmetry axis, so that the assembly can be stressed in a balanced manner by the limiting force provided by the fixing screws 102.

The lifting mechanism in this embodiment is a mechanism for realizing expansion and contraction of the joint.

In this embodiment, the diameter-changing mechanism 2 includes a sealing washer 201, the sealing washer 201 is used for assisting the assembly of the performance of the sealing device, a joint pipe 202 is fixedly installed on the left side of the sealing washer 201, the joint pipe 202 is used for being connected with a pipeline and protecting an elastic pipe 205, a reinforcing screw 203 is inserted into the outer surface of the joint pipe 202, the reinforcing screw 203 is used for fixing the joint pipe 202 and the pipeline, a deformation spring 204 is fixedly installed on the inner wall of the joint pipe 202, the deformation spring 204 is used for maintaining the shape of the elastic pipe 205 and preventing the elastic pipe 205 from deforming, the elastic pipe 205 is fixedly installed at one end, away from the joint pipe 202, of the deformation spring 204, the elastic pipe 205 is used for changing the inner diameter along with the pipeline when the pipeline deforms, an internal thread 206 is processed on the inner wall of the elastic pipe 205, and the internal thread 206 is used for realizing threaded connection with the external thread 108.

The number of the deformation springs 204 is multiple, and the distance between the deformation springs 204 is consistent, so that all parts of the elastic tube 205 can be reset, and the stress is balanced when all parts generate a reset trend.

The elastic tube 205 is made of an elastic material, so that the inner diameter of the elastic tube 205 can be easily changed, the pipeline cannot be damaged when the pipeline deforms, and the sealing gasket 201 is matched with the elastic tube 205, so that the sealing performance of the joint is improved.

The reducing mechanism 2 in the present embodiment is a mechanism for changing the inside diameter of the joint.

Compared with the prior art, when the pipeline is used, when the pipeline deforms due to temperature or vibration, external force is applied to the elastic pipe 205, the elastic pipe 205 is enabled to follow the deformation, the deformation spring 204 is compressed, the pipeline is prevented from being damaged due to limitation of a joint or the service life of the pipeline is too short, when the pipeline is restored, the elastic pipe 205 is enabled to be restored by utilizing the elastic potential energy of the deformation spring 204, the condition that the deformation is out of effect is avoided, when the pipeline deforms axially, the external force is applied to the movable pipe 107, at the moment, the telescopic spring 105 and the telescopic rod 106 contract, the sliding block 104 moves in the connecting pipe 101, the joint can stretch and change the length, the deformation of the pipeline is adapted, the pipeline is prevented from being damaged, when the pipeline is restored, the movable pipe 107 is enabled to be restored by utilizing the elastic potential energy of the telescopic spring 105, the telescopic rod 106 is used for preventing dislocation when the spring contracts, and the normal operation of an assembly is interfered.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

1. The utility model provides a flange formula reducing expansion joint, includes telescopic machanism (1) and reducing mechanism (2), its characterized in that: the left end of the telescopic mechanism (1) is provided with a reducing mechanism (2);

telescopic machanism (1) is including connecting pipe (101), the surface of connecting pipe (101) is provided with set screw (102), the inner wall processing of connecting pipe (101) has spout (103), the inside of spout (103) is provided with slider (104), the surface of slider (104) is provided with movable pipe (107), the surface processing of movable pipe (107) has external screw thread (108), the left side of connecting pipe (101) is provided with expanding spring (105), the inside of expanding spring (105) is provided with telescopic link (106).

2. The flange type reducing expansion joint according to claim 1, wherein: reducing mechanism (2) are including seal ring (201), the left side fixed mounting of seal ring (201) has joint pipe (202), the surface of joint pipe (202) is pegged graft and is had reinforcement screw (203), the inner wall fixed mounting of joint pipe (202) has deformation spring (204), the one end fixed mounting that joint pipe (202) were kept away from in deformation spring (204) has elasticity pipe (205), the inner wall processing of elasticity pipe (205) has internal thread (206).

3. The flange type reducing expansion joint according to claim 1, wherein: the telescopic length of the telescopic rod (106) is consistent with that of the telescopic spring (105), and the telescopic rod (106) is fixedly connected with the connecting pipe (101) and the sealing washer (201).

4. The flange type reducing expansion joint according to claim 1, wherein: the movable pipe (107) is matched with the connecting pipe (101), and a lubricant is added into the sliding groove (103).

5. The flange type reducing expansion joint according to claim 1, wherein: the number of the fixing screws (102) is two, and the fixing screws (102) are symmetrically distributed by taking the perpendicular bisector of the connecting pipe (101) as a symmetry axis.

6. The flange type reducing expansion joint according to claim 2, wherein: the number of the deformation springs (204) is multiple, and the distance between the deformation springs (204) is consistent.

7. The flange type reducing expansion joint according to claim 2, wherein: the elastic tube (205) is made of elastic material, and the sealing washer (201) is matched with the elastic tube (205).