CN206846163U - Straight pipe pressure-balancing type expansion joint - Google Patents

Abstract

It the utility model is related to a kind of straight pipe pressure-balancing type expansion joint, including the first adapter and the second adapter, the first corrugated flexible hose is sealedly connected between first adapter right-hand member and the second adapter left end, the second adapter right-hand member connects the 3rd corrugated flexible hose, the adapter of the 3rd corrugated flexible hose right-hand member connection the 4th；First guide shell right-hand member, which stretches into, forms free end in the second adapter；3rd adapter inner hole wall is fixedly connected with the second guide shell, and the second guide shell right-hand member, which stretches into, forms free end in the second adapter；First guide shell inner hole wall is fixedly connected with the 3rd guide shell, and the 3rd guide shell left end stretches into and free end is formed in the second guide shell, and the barrel dliameter of the first guide shell and the second guide shell is identical.Second guide shell and the first guide shell barrel dliameter identical, make the 4th adapter the second guide shell right-hand member is propped up the first guide shell when being moved to the second adapter, the 3rd corrugated flexible hose is damaged because amount of movement is excessive so as to limit when the 4th adapter is moved to the left.

Description

Straight pipe pressure balanced expansion joint

technical field

The utility model relates to a straight pipe pressure balanced expansion joint.

Background technique

Expansion joints are used to make up for the deviation of angle and distance when connecting adjacent pipe fittings, and realize the connection of adjacent pipe fittings. The traditional straight pipe pressure expansion joint has an unsatisfactory balance effect. As the liquid pressure of pipe fittings increases, the overall expansion joint The structure is unstable.

Utility model content

The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a straight pipe pressure balanced expansion joint.

The technical solution adopted by the utility model to solve the technical problem is: a straight pipe pressure balance type expansion joint, including a first connecting pipe and a second connecting pipe distributed left and right, the right end of the first connecting pipe and the left end of the second connecting pipe The first corrugated hose is sealed and connected, the left end of the first connecting pipe is sealed and connected with the second corrugated hose, the left end of the second corrugated hose is connected with the third connecting pipe; the right end of the second connecting pipe is connected with the third corrugated hose, The right end of the third corrugated hose is connected to the fourth connecting pipe;

The inner hole wall of the fourth connecting pipe is connected with a first guide tube, the right end of the first guide tube is fixedly connected with the fourth connecting tube, and the right end of the first guide tube extends into the second connecting tube to form a free end; The inner hole wall of the third connection tube is fixedly connected with a second flow guide tube, the left end of the second flow guide tube is fixedly connected with the third connection tube, and the right end of the second flow guide tube extends into the second connection tube to form a free end; The inner hole wall of the first guide tube is fixedly connected with a third guide tube, the right end of the third guide tube is fixedly connected with the first guide tube, and the left end of the third guide tube extends into the second guide tube A free end is formed inside, and the cylinder diameters of the first guide tube and the second guide tube are the same.

Further, the first connecting pipe is provided with a first ring plate, the second connecting pipe is provided with a second ring plate, the first ring plate is connected to the first ring cylinder, and the second ring plate is provided with As for the second annular cylinder, both ends of the first corrugated hose are sealedly connected with the first annular cylinder and the second annular cylinder respectively.

Further, a plurality of first fastening bolt assemblies are arranged between the first ring cylinder and the second ring cylinder; a plurality of second fastening bolt assemblies are arranged between the first connecting pipe and the third connecting pipe, so A plurality of third fastening bolt assemblies are arranged between the second connecting pipe and the fourth connecting pipe;

The fastening bolt assembly includes a left mounting ring plate, a right mounting ring plate and a bolt rod, the left mounting ring plate and the right mounting ring plate are fixedly arranged, the two ends of the bolt rod respectively form threaded sections, and the threads at the two ends of the bolt rod The segments respectively pass through the left mounting ring plate and the right mounting ring plate to connect with fastening nuts.

The beneficial effect of the utility model is: the diameter of the second guide tube is the same as that of the first guide tube, so that when the fourth connecting pipe moves to the second connecting pipe, the right end of the second guiding tube is pressed against the first guide tube barrel, thereby restricting the third corrugated hose from being damaged due to excessive movement when the fourth connecting pipe moves to the left.

The third guide tube protrudes into the second guide tube, which can effectively limit the damage of the corrugated hose due to excessive lateral movement between the connecting pipes.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is the schematic diagram of the utility model expansion joint;

Among them, 1. The first connecting pipe, 2. The second connecting pipe, 3. The third connecting pipe, 4. The fourth connecting pipe, 5. The first corrugated hose, 6. The second corrugated hose, 7. The third corrugated hose, 8. The first guide tube, 9. The second guide tube, 10. The third guide tube.

detailed description

The utility model is described further in conjunction with accompanying drawing now. These drawings are simplified schematic diagrams only to illustrate the basic structure of the utility model in a schematic way, so they only show the configurations related to the utility model.

As shown in Figure 1, a pressure-balanced straight pipe expansion joint includes a first connecting pipe 1 and a second connecting pipe 2 distributed left and right, and a first bellows seal is connected between the right end of the first connecting pipe 1 and the left end of the second connecting pipe 2 Hose 5, the left end of the first adapter 1 is sealed with the second corrugated hose 6, the left end of the second corrugated hose 6 is connected to the third adapter 3; the right end of the second adapter 2 is connected to the third corrugated hose 7, the third corrugated hose 7 the right end is connected with the fourth connecting pipe 4.

The inner hole wall of the fourth connecting pipe 4 is connected with a first guide tube 8, the right end of the first guide tube 8 is fixedly connected with the fourth connecting tube 4, and the right end of the first guide tube 8 extends into the second connecting tube 2 to form a free end; The inner hole wall of the three connecting pipes 3 is fixedly connected with a second guide tube 9, the left end of the second guide tube 9 is fixedly connected with the third connecting tube 3, and the right end of the second guide tube 9 extends into the second connecting tube 2 to form a free end; A guide tube 8 inner hole wall is fixedly connected with a third guide tube 10, the right end of the third guide tube 10 is fixedly connected with the first guide tube 8, and the left end of the third guide tube 10 extends into the second guide tube 9 A free end is formed inside, and the tube diameters of the first guide tube 8 and the second guide tube 9 are the same.

The first connecting pipe 1 is provided with a first ring plate, the second connecting pipe 2 is provided with a second ring plate, the first ring plate is connected with the first ring cylinder, the second ring plate is provided with a second ring cylinder, the first corrugated soft The two ends of the tube 5 are respectively sealed and connected with the first ring cylinder and the second ring cylinder.

A plurality of first fastening bolt assemblies are arranged between the first ring cylinder and the second ring cylinder; a plurality of second fastening bolt assemblies are arranged between the first connecting pipe 1 and the third connecting pipe 3, and the second connecting pipe 2 and the first connecting pipe A plurality of third fastening bolt assemblies are arranged between the four connecting pipes 4; the fastening bolt assemblies include a left mounting ring plate, a right mounting ring plate and a bolt rod, the left mounting ring plate and the right mounting ring plate are fixedly arranged, and the two ends of the bolt rod Thread segments are respectively formed, and the thread segments at both ends of the bolt rod respectively pass through the left mounting ring plate and the right mounting ring plate to connect with fastening nuts. The fastening bolt assembly is used for the expansion joint during transportation and transportation, and is used to prevent the flexible hose from being damaged by the vibration of the connecting pipe.

In the expansion joint of the present utility model, the diameter of the second guide tube 9 is the same as that of the first guide tube 8, so that when the fourth connecting tube 4 moves to the second connecting tube 2, the right end of the second guiding tube 9 is held against The first guide tube 8 is used to limit the damage to the third corrugated hose 7 due to excessive movement when the fourth connecting pipe 4 moves to the left. The third guide tube 10 protrudes into the second guide tube 9, which can effectively limit the damage of the corrugated hose due to excessive lateral movement between the connecting pipes.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (3)

1. a kind of straight pipe pressure-balancing type expansion joint, it is characterized in that, including the first adapter (1) and the second adapter being distributed in left and right (2), it is sealedly connected with the first corrugated flexible hose (5) between first adapter (1) right-hand member and second adapter (2) left end, described the One adapter (1) left end is sealedly connected with the second corrugated flexible hose (6), the adapter of the second corrugated flexible hose (6) left end connection the 3rd (3)；Described second adapter (2) right-hand member connects the 3rd corrugated flexible hose (7), and the 3rd corrugated flexible hose (7) the right-hand member connection the 4th connects Manage (4)；

Described 4th adapter (4) inner hole wall is connected with the first guide shell (8), the first guide shell (8) right-hand member and the 4th adapter (4) it is fixedly connected, the first guide shell (8) right-hand member, which stretches into, forms free end in the second adapter (2)；3rd adapter (3) Inner hole wall is fixedly connected with the second guide shell (9), and the second guide shell (9) left end is fixedly connected with the 3rd adapter (3), described Second guide shell (9) right-hand member, which stretches into, forms free end in the second adapter (2)；First guide shell (8) inner hole wall is fixedly connected There is the 3rd guide shell (10), the 3rd guide shell (10) right-hand member is fixedly connected with the first guide shell (8), the 3rd guide shell (10) left end stretches into the barrel dliameter that free end, first guide shell (8) and the second guide shell (9) are formed in the second guide shell (9) It is identical.

2. straight pipe pressure-balancing type expansion joint according to claim 1, it is characterized in that, set in first adapter (1) There is the first ring flat-plate, be provided with the second ring flat-plate in second adapter (2), first ring flat-plate connects the first ring cylinder, and described second The second ring cylinder is provided with ring flat-plate, the first corrugated flexible hose (5) both ends are tightly connected with the first ring cylinder and the second ring cylinder respectively.

3. straight pipe pressure-balancing type expansion joint according to claim 2, it is characterized in that, the first ring cylinder and the second ring cylinder Between be provided with multiple first fastening bolt components；Multiple second are provided between first adapter (1) and the 3rd adapter (3) Fastening bolt component, multiple 3rd fastening bolt components are provided between second adapter (2) and the 4th adapter (4)；

Fastening bolt component includes left installation ring flat-plate, right installation ring flat-plate and shank of bolt, the left installation ring flat-plate, right installation ring flat-plate Fixed setting, the shank of bolt both ends form thread segment respectively, the thread segment at the shank of bolt both ends respectively from left installation ring flat-plate, Right installation ring flat-plate connects clamp nut after passing through.