CN113790328A

CN113790328A - Water hammer eliminator for water delivery pipeline

Info

Publication number: CN113790328A
Application number: CN202111096573.5A
Authority: CN
Inventors: 冯雪
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2021-12-14

Abstract

The invention relates to the field of water hammer eliminators, and discloses a water hammer eliminator for a water conveying pipeline, which comprises a pipe body and a piston, wherein a check ring is arranged at the bottom of an inner cavity of the pipe body, the piston is movably sleeved in the pipe body, an inflation valve is arranged at the top of the pipe body, a through groove is formed in the middle of the piston, a sealing plate for plugging the through groove is arranged at the bottom of the piston, the sealing plate can move downwards, and a positioning vertical pipe positioned right above the through groove is fixedly connected to the middle of the top end of the inner cavity of the pipe body. The through groove is formed in the middle of the piston, the sealing plate is used for plugging the through groove at the bottom of the piston, the positioning vertical pipe arranged at the top of the inner cavity of the pipe body is matched, fluid pressure in the water conveying pipeline is eliminated, water shock waves are used for draining and relieving pressure when acting force on the piston is overlarge, the overall structure of the pipe body is effectively protected, ultrahigh pressure caused by the water shock waves is avoided, and the problem that the pipe body is burst or a sealing cover falls off due to overlarge air pressure in the pipe body is solved.

Description

Water hammer eliminator for water delivery pipeline

Technical Field

The invention relates to the technical field of water hammer eliminators, in particular to a water hammer eliminator for a water conveying pipeline.

Background

The water hammer eliminator is one device capable of eliminating the water hammer and the shock of surge produced in the transmission system effectively without stopping the flow of fluid, and this can eliminate destructive shock wave and protect the water hammer.

The existing piston type water hammer eliminator has the following use principle: the water hammer eliminator has one sealed air cavity inside and one piston below, and when shock wave is introduced into the water hammer eliminator, the water hammer acts on the piston to move toward the air cavity and to compress the air inside the air cavity for buffering to eliminate irregular water hammer shock.

However, current piston water hammer annihilator is when using, air cavity in the water hammer annihilator is because of the piston extrusion, its pressure is constantly increased, when the effort of water hammer wave to the piston is too big, easy ultra-high pressure because of water hammer wave, make air cavity internal gas pressure too big, lead to the problem that the body bursts or the closing cap drops, for this reason, provide a water hammer annihilator for water delivery pipeline, and, when setting up exhaust apparatus on the annihilator and carrying out the pressure release, because of when emergency pressure release each time, the internal gas of air cavity runs off, need make up air again, make the trouble problem of later maintenance.

Disclosure of Invention

The invention provides a water hammer eliminator for a water delivery pipeline, which has the advantages of water drainage and pressure relief and solves the technical problems in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme to realize: the utility model provides a water hammer annihilator for water transfer pipeline, includes body and piston, and the bottom of body inner chamber is equipped with the retaining ring, and piston activity suit is in the inside of body, and the top of body is equipped with the inflation valve, logical groove has been seted up at the middle part of piston, the bottom of piston is equipped with the closing plate that the shutoff led to the groove, and the closing plate can move down, the middle part fixedly connected with on body inner chamber top is located the location standpipe directly over leading to the groove, bottom fixedly connected with location ejector pad, and the both sides of location standpipe bottom have seted up the through-hole, the movable sleeve is equipped with the sealed sliding ring of shutoff through-hole on the standpipe of location, the external diameter value of sealed sliding ring is greater than the internal diameter value that leads to the groove, the top of body is equipped with the drain pipe that communicates with the location standpipe mutually.

Optionally, positioning bolts are sleeved on two sides of the bottom of the piston in a threaded manner, two positioning bolts are respectively movably sleeved with a transverse connecting shaft, a supporting plate is sleeved on one end of the transverse connecting shaft in a threaded manner, and a second spring is fixedly connected between the top of the supporting plate and the bottom of the sealing plate.

Optionally, the movable sleeve is provided with a driven slip ring below the piston, the outer side of the driven slip ring is attached to the inner wall of the tube body, notches are formed in two sides of the top of the second spring, two ends of the transverse connecting shaft, which are far away from the supporting plate, are movably clamped with the notches in two sides of the positioning bolt respectively, and two ends of the transverse connecting shaft can be fixed to the driven slip ring through bolts.

Optionally, the diameter value of the positioning push block is greater than the outer diameter value of the positioning vertical tube, the diameter value of the positioning push block is smaller than the diameter value of the through groove, and the height value of the positioning push block is smaller than the height value of the through groove.

Optionally, a positioning ring is fixedly sleeved at the middle part of the positioning vertical pipe, a first spring is arranged between the sealing slip ring and the positioning ring, and the first spring is movably sleeved on the positioning vertical pipe.

The invention provides a water hammer eliminator for a water delivery pipeline, which has the following beneficial effects:

1. this water hammer annihilator for water delivery pipeline, logical groove has been seted up through the piston middle part, utilize the closing plate to lead to the groove design in the bottom shutoff of piston, the location standpipe that cooperation body inner chamber top set up, fluid pressure to in the water delivery pipeline is eliminated, and the water hammer wave is when too big to the effort of piston, utilize location standpipe drainage pressure release, carry out effectual protection to body overall structure, ultrahigh pressure because of the water hammer wave has been avoided, make the internal gas pressure of body too big, lead to the problem that the body bursts or the closing cap drops.

2. This water hammer annihilator for water delivery pipeline carries out the pressure release through the drainage, compares in current water hammer annihilator and sets up exhaust apparatus in the top of body and carry out the mode of pressure release, and the gas loss volume when emergency pressure release at every turn is very little to avoided frequently aerifing after pressure release at every turn, makeed the trouble problem of later maintenance, further improved the safe in use effect of water hammer annihilator.

Drawings

FIG. 1 is a sectional view of a water hammer arrestor according to the present invention;

FIG. 2 is a schematic illustration of the piston of FIG. 1 according to the present invention;

FIG. 3 is a top view of the transverse axle structure of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic view of the standpipe of FIG. 1 according to the present invention;

FIG. 5 is a partial schematic view of a water hammer arrestor in a drainage pressure relief state according to the present invention.

In the figure: 1. a pipe body; 101. a retainer ring; 2. a piston; 201. a through groove; 202. a sealing plate; 3. positioning the vertical pipe; 301. a through hole; 4. positioning a push block; 5. sealing a slip ring; 6. a positioning ring; 7. a first spring; 8. a drain pipe; 9. positioning the bolt; 10. a transverse connecting shaft; 11. a support plate; 12. a second spring; 13. a passive slip ring.

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, a water hammer eliminator for a water delivery pipeline comprises a pipe body 1, a retainer ring 101 is sleeved on the bottom of an inner cavity of the pipe body 1 in a threaded manner, a piston 2 is movably sleeved in the inner cavity of the pipe body 1, the retainer ring 101 is used for supporting the piston 2 to ensure that the piston 2 always moves longitudinally in the inner cavity of the pipe body 1, an inflation valve is arranged on one side of the top of the pipe body 1 to inflate the inner cavity of the pipe body 1 through the inflation valve, the bottom of the pipe body 1 is flanged to the water delivery pipeline, a through groove 201 is arranged in the middle of the piston 2, a sealing plate 202 for plugging the through groove 201 is arranged at the bottom of the piston 2, the sealing plate 202 can move downwards, specifically, positioning bolts 9 are sleeved on both sides of the bottom of the piston 2 in a threaded manner, referring to fig. 2-3, transverse connecting shafts 10 are respectively movably sleeved on the two positioning bolts 9, a supporting plate 11 is sleeved on one end of the two transverse connecting shafts 10 in a threaded manner, and a second spring 12 is fixedly connected between the top of the supporting plate 11 and the bottom of the sealing plate 202, under the normal condition, through the elastic force effect of second spring 12 for closing plate 202 is in the state that the groove 201 was led to in the shutoff, and the outer hammer of water that produces in water piping and the irregular water hammer wave that the surge took place vibrate the back, and water hammer wave gets into and acts on piston 2 in the body 1, makes piston 2 shift up the air of compression body 1 interior top cushion, thereby eliminates water hammer wave and vibrate.

The middle part of the top end of the inner cavity of the pipe body 1 is fixedly connected with a positioning vertical pipe 3, the positioning vertical pipe 3 is positioned right above the through groove 201, the bottom end of the positioning vertical pipe 3 is fixedly connected with a positioning push block 4, the diameter value of the positioning push block 4 is larger than the outer diameter value of the positioning vertical pipe 3, the diameter value of the positioning push block 4 is smaller than the diameter value of the through groove 201, the height value of the positioning push block 4 is smaller than the height value of the through groove 201, the positioning push block 4 can be ensured to move into the through groove 201 and can not block the through groove 201, the middle part of the positioning vertical pipe 3 is fixedly sleeved with a positioning ring 6, the bottom of the positioning vertical pipe 3 is movably sleeved with a sealing slip ring 5 positioned above the positioning push block 4, the inner side of the sealing slip ring 5 is attached to the outer side of the positioning vertical pipe 3, the outer diameter value of the sealing slip ring 5 is larger than the inner diameter value of the through groove 201, a first spring 7 is arranged between the sealing slip ring 5 and the positioning ring 6, first spring 7 activity suit is on location standpipe 3, refer to fig. 4, and through-hole 301 has all been seted up to the both sides of 3 bottoms of location standpipe, under the spring action of first spring 7 for sealing ring 5 is located the bottom of location standpipe 3 all the time, and is in the state of shutoff through-hole 301, and the middle part fixedly connected with drain pipe 8 on 1 top of body, the inner chamber of drain pipe 8 and the inner chamber switch-on of location standpipe 3.

Through the design that the through groove 201 is formed in the middle of the piston 2, the through groove 201 is sealed at the bottom of the piston 2 by the sealing plate 202, and the positioning vertical tube 3 arranged at the top of the inner cavity of the tube body 1 is matched, when fluid pressure in a water pipeline is eliminated, when acting force of water shock waves on the piston 2 is too large, the piston 2 moves to the top of the inner cavity of the tube body 1, and when the air pressure in the tube body 1 is in a high state, referring to fig. 5, along with continuous upward movement of the piston 2, the positioning push block 4 enters the through groove 201, when the positioning push block 4 does not contact with the sealing plate 202, the sealing sliding ring 5 contacts with the top of the piston 2 first, so as to form sealing above the through groove 201, along with continuous upward movement of the piston 2 relative to the positioning vertical tube 3, the bottom end of the positioning push block 4 pushes the sealing plate 202 to move downward, the top of the sealing plate 202 is separated from the bottom of the piston 2, and simultaneously, the through hole 301 moves to the lower part of the sealing sliding ring 5, at this moment, the water of 1 inner chamber bottom of body is under the strong pressure effect of water hammer wave, water warp through-hole 301, location standpipe 3, drain pipe 8 discharges and carries out the pressure release, carry out effectual protection to the overall structure of body 1, the ultrahigh pressure because of water hammer wave has been avoided, make 1 internal gas pressure of body too big, lead to the problem that body 1 bursts or the closing cap drops, and, carry out the pressure release through the drainage, compare in current water hammer annihilator set up exhaust apparatus in the top of body 1 and carry out the mode of pressure release, during emergency pressure release each time, the gas loss is very little, thereby avoided frequently aerifing after every pressure release, make the trouble problem of later maintenance, the safe result of use of water hammer annihilator has further been improved.

Continuing to refer to fig. 2-3, a driven slip ring 13 located below the piston 2 is movably sleeved in the tube 1, the outer side of the driven slip ring 13 is attached to the inner wall of the tube 1, notches are formed on both sides of the top of the second spring 12, one ends of the two transverse connecting shafts 10 far away from the support plate 11 are movably clamped with the notches on both sides of the positioning bolt 9 respectively, and one ends of the two transverse connecting shafts 10 can be fixed on the driven slip ring 13 through bolts, the transverse connecting shafts 10 and the driven slip ring 13 connected through the positioning bolt 9 at the bottom of the piston 2 eliminate pipeline water hammer of the piston 2, and in the process that the piston 2 moves downwards under the action of air pressure, the inner wall of the tube 1 is firstly scraped through the driven slip ring 13 below the piston 2, so as to clean impurities attached to the inner wall of the tube 1, avoid impurities and scale deposits on the inner wall of the tube 1, and influence the upward sliding of the piston 2 on the inner wall of the tube 1, lead to the wearing and tearing of piston 2 to aggravate, the problem that life reduces, and, through behind the retaining ring 101 of passive sliding ring 13 contact body 1 bottom earlier, utilize second spring 12 elasticity to cushion passive sliding ring 13 moving down, the effectual current water hammer annihilator of having avoided is moving down the in-process, because of the body 1 internal gas pressure is great, make piston 2 move down the speed faster, and it is great with retaining ring 101 impact strength, lead to the problem that piston 2 damaged easily, further improved piston 2's life.

When the pipeline water hammer is eliminated, in a dehumidification state, the piston 2 and the driven slip ring 13 are integrally positioned at the bottom of the inner cavity of the pipe body 1, when water hammer waves are generated in the water pipeline due to reasons such as stopping a pump and the like, the water hammer waves in the water pipeline enter from the bottom of the pipe body 1 and act on the piston 2, so that the piston 2 moves upwards to compress air above the pipe body 1 and buffer the air, thereby protecting the water pipeline, when the water hammer waves in the water pipeline have overlarge intensity and the air pressure intensity after the piston 2 moves upwards and compresses is large, along with the continuous upward movement of the piston 2 under the action of the water hammer waves, the sealing slip ring 5 at the bottom end of the positioning vertical pipe 3 is firstly contacted with the top of the piston 2 and is blocked at the top of the through groove 201, then the bottom of the positioning push block 4 is contacted with the sealing plate 202, the sealing plate 202 moves downwards relative to the piston 2, the bottom channel of the through groove 201 is opened, and the through hole 301 moves to the lower part of the sealing slip ring 5, the water in the pipe body 1 is discharged through the through hole 301, the positioning vertical pipe 3 and the drain pipe 8, so that the pressure is relieved, the pipe body 1 is prevented from being burst, and after water hammer in the water pipeline is eliminated, the piston 2 is reset and moves down to the bottom of the pipe body 1 under the reaction force of compressed gas.

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.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a water hammer annihilator for water delivery pipeline, includes body (1) and piston (2), and the bottom of body (1) inner chamber is equipped with retaining ring (101), and piston (2) movable sleeve dress is in the inside of body (1), and the top of body (1) is equipped with inflation valve, its characterized in that: the middle part of piston (2) has been seted up and has been led to groove (201), the bottom of piston (2) is equipped with closing plate (202) that the shutoff leads to groove (201), and closing plate (202) can move down, the middle part fixedly connected with on body (1) inner chamber top is located the location standpipe (3) that lead to directly over groove (201), bottom fixedly connected with location ejector pad (4), and the both sides of location standpipe (3) bottom have seted up through-hole (301), movable sleeve is equipped with sealed sliding ring (5) of shutoff through-hole (301) on location standpipe (3), the external diameter value of sealed sliding ring (5) is greater than the internal diameter value that leads to groove (201), the top of body (1) is equipped with drain pipe (8) of putting through with location standpipe (3) mutually.

2. The water hammer arrestor for water transport pipelines according to claim 1, wherein: positioning bolts (9) are sleeved on two sides of the bottom of the piston (2) in a threaded manner, two positioning bolts (9) are respectively movably sleeved with a transverse connecting shaft (10) and two supporting plates (11) are sleeved on one end of the transverse connecting shaft (10) in a threaded manner, and second springs (12) are fixedly connected between the tops of the supporting plates (11) and the bottoms of the sealing plates (202).

3. The water hammer arrestor for water transport pipelines according to claim 2, wherein: the movable sleeve is equipped with passive sliding ring (13) that is located piston (2) below in body (1), and the outside of passive sliding ring (13) and the inner wall laminating of body (1), the notch has all been seted up to the both sides at second spring (12) top, two the one end that backup pad (11) were kept away from in horizontal even axle (10) is respectively with both sides notch activity joint on positioning bolt (9), and two the one end of horizontal even axle (10) all can be passed through the bolt fastening on passive sliding ring (13).

4. The water hammer arrestor for water transport pipelines according to claim 1, wherein: the diameter value of the positioning push block (4) is larger than the outer diameter value of the positioning vertical pipe (3), the diameter value of the positioning push block (4) is smaller than the diameter value of the through groove (201), and the height value of the positioning push block (4) is smaller than the height value of the through groove (201).

5. The water hammer arrestor for water transport pipelines according to claim 1, wherein: the middle part of the positioning vertical pipe (3) is fixedly sleeved with a positioning ring (6), a first spring (7) is arranged between the sealing slip ring (5) and the positioning ring (6), and the first spring (7) is movably sleeved on the positioning vertical pipe (3).