CN110185874B - Mechanical intelligent water hammer pressure control device with adjustable threshold - Google Patents
Mechanical intelligent water hammer pressure control device with adjustable threshold Download PDFInfo
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- CN110185874B CN110185874B CN201910305013.2A CN201910305013A CN110185874B CN 110185874 B CN110185874 B CN 110185874B CN 201910305013 A CN201910305013 A CN 201910305013A CN 110185874 B CN110185874 B CN 110185874B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 238000005192 partition Methods 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 abstract description 8
- 230000003139 buffering effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a mechanical intelligent water hammer pressure control device with an adjustable threshold value, which comprises a cylinder, a pressure release controller and a pressure compensation controller, wherein the pressure compensation controller and the pressure release controller are respectively composed of an elastic flow regulator, a sleeve type throttle valve and a connecting rod; the sleeve type throttle valve consists of a piston and a sleeve, and the sleeve is provided with a grid type opening; the top and the bottom of the elastic current regulator are provided with limit holes, and a spring, a limit stop block and a tightness adjuster are arranged in the elastic current regulator; the tightness adjuster consists of external threads, a gasket and an adjusting ring, and can adjust the initial length of the spring by screwing the adjusting ring to change the response threshold of the elastic current adjuster. When the pressure of the water hammer exceeds the limit value of the allowable pressure of the main pipe, the intelligent response of the pressure release controller and the pressure compensation controller is adopted, the opening degree of the sleeve type throttle valve is adjusted according to the size of the pressure overrun, the pressure of the main pipe is released or compensated, the pressure oscillation amplitude of the water hammer is reduced, and the damage of the water hammer to a water supply pipeline system is eliminated or lightened.
Description
Technical Field
The invention belongs to the field of water supply pipeline systems, and particularly relates to a mechanical intelligent water hammer pressure control device with an adjustable threshold value.
Background
In a pressure pipeline, water hammer is a hydraulic phenomenon accompanied by sharp fluctuations in fluid pressure and flow rate, and is generally caused by the closing and opening of valves in a pipeline system, the starting and stopping of a water pump, and the sudden stopping of a water turbine. The water hammer phenomenon may cause serious pressure and flow oscillation, cavitation, noise and other dangers in the pipeline, and particularly, transient positive and negative pressures generated by the water hammer are far greater than the normal working pressure of the pipeline, so that damage to a valve, breakage of the pipeline and other dangers can be caused.
When the open valve is suddenly closed or the water pump is stopped, the water flow generates a pressure on the valve and the pipe wall, mainly the valve or the pump. Because the pipe wall is smooth, the water power of the subsequent water flow quickly reaches the maximum under the action of inertia, and a destructive effect is generated, namely the water hammer effect in the hydraulics, which is called as positive water hammer. Conversely, a closed valve, when suddenly opened or the feed pump is activated, may also create a water hammer, referred to as a negative water hammer.
Therefore, the prevention and treatment of the water hammer phenomenon is an important link for guaranteeing the safe operation of the water supply pipeline. The current method for reducing the water hammer mainly comprises the steps of optimizing the operation mode and installing a water hammer control device, and aims to reduce the amplitude and duration of the pressure oscillation of the water hammer.
The patent document with publication number CN105332942A discloses a buffering and flow guiding water hammer eliminator and a using method thereof, comprising an inner piston buffering part and an outer pressure stabilizing and flow guiding part which are coaxially arranged inside and outside, wherein the inner piston buffering part comprises an outer wall of the inner piston buffering part, an upper piston and a lower pressure regulating piston which are arranged inside the inner piston buffering part, and the lower pressure regulating piston is connected with the upper piston through a pre-pressing spring. When a water hammer occurs, the force instantaneously acting on the top of the upper piston breaks the static state of the upper piston, the upper piston moves axially downwards, the sealing state of the chamber pressure balance hole and the balance hole sealing rod breaks, water flow in the high-pressure chamber of the pipe network flows into the lower pressure regulating chamber through the upper piston and enters the water storage space of the outer pressure stabilizing and flow guiding chamber through the chamber pressure balance hole and the pressure discharge hole; when the water hammer applied to the top of the upper piston is reduced, the upper piston gradually recovers to a normal state under the action of the resultant force of the pressure of the water in the regulating spring and the lower pressure regulating chamber. The upper piston is at rest when the force applied to the bottom of the upper piston is greater than the force applied to the top of the piston.
The method can only release pressure through the pressure discharge hole when the positive pressure of the water hammer is greater than the normal working pressure of the pipeline, namely when the positive water hammer occurs. When the valve is suddenly opened or the water pump is suddenly started, namely negative water hammer occurs, timely pressure compensation can not be carried out, and the cavitation phenomenon of the pipeline can be caused.
In order to eliminate the serious consequences of the water hammer effect, a device capable of releasing pressure and supplementing pressure to the pipeline is needed, the problems of positive water hammer and negative water hammer caused by instant closing and opening of a valve or instant starting and stopping of a water pump are solved, the pressure oscillation amplitude of the water hammer is effectively controlled, and the device has important significance for guaranteeing the safe operation of a water supply pipeline.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a mechanical intelligent water hammer pressure control device with an adjustable threshold value, which can reduce the amplitude of water hammer pressure oscillation, adjust a response threshold value and eliminate or reduce the harm caused by positive and negative water hammers in a water supply pipeline system.
The technical scheme of the invention is as follows:
a mechanical intelligent water hammer pressure control device with an adjustable threshold value is characterized by comprising a cylinder, a pressure release controller and a pressure compensation controller, wherein the pressure release controller and the pressure compensation controller are arranged in the cylinder;
the pressure release controller consists of a first sleeve type throttling valve, a first connecting rod and a first elastic flow regulator, wherein a sleeve of the first sleeve type throttling valve is fixed at a first water through hole on the upper surface of the partition plate; the lower end of the first connecting rod is fixedly connected with a piston on the first sleeve type throttle valve, and the upper end of the first connecting rod penetrates through the working platform; the first elastic flow regulator comprises a first tightness regulator fixed on the first connecting rod and a first spring of which two ends are respectively propped against the first tightness regulator and the lower surface of the working platform;
the pressure compensation controller consists of a second sleeve type throttling valve, a second connecting rod and a second elastic flow regulator, wherein a sleeve of the second sleeve type throttling valve is fixed at a second water through hole on the lower surface of the partition plate; the lower end of the second connecting rod is fixedly connected with a piston on the second sleeve type throttle valve, and the upper end of the second connecting rod penetrates through the working platform; and the second elastic flow regulator comprises a second tightness regulator fixed on the second connecting rod and a second spring with two ends respectively abutting against the second tightness regulator and the upper surface of the working platform.
When the water supply device is used, the lower end of the cylinder is connected with the top end of the main pipe of the water supply pipeline system, and water is stored inside the cylinder. When the positive pressure and the negative pressure of the main pipe are within the allowable upper limit value and the allowable lower limit value of the main pipe pressure, the pressure compensation releaser and the pressure compensation controller do not respond, the first sleeve type throttling valve and the second sleeve type throttling valve are kept closed, and no water flows between the cylinder body and the main pipe.
The main pipe pressure allowable upper limit value is the magnitude of the instantaneous water level of the cylinder and the response threshold value, when the positive pressure of the main pipe pressure exceeds the main pipe pressure allowable upper limit value, the pressure release controller responds due to the pressure difference between the main pipe and the cylinder, the first elastic flow regulator moves upwards to drive the opening of the first sleeve type throttle valve according to the magnitude of the main pipe pressure allowable upper limit value, water flow enters the cylinder from the main pipe through the first sleeve type throttle valve, the water level in the cylinder rises to enable the positive pressure extreme value of the main pipe to be reduced, and at the moment, the pressure compensation controller does not respond; the larger the pressure difference between the main pipe and the barrel is, the larger the opening degree of the first sleeve type throttle valve is.
The lower limit value of the main pipe pressure allowance is the magnitude of the response threshold value subtracted from the instantaneous water level of the cylinder body, when the negative pressure of the main pipe pressure exceeds the lower limit value of the main pipe pressure allowance, the pressure compensation controller responds due to the pressure difference between the main pipe and the cylinder body, the second elastic flow regulator moves downwards according to the magnitude of the main pipe pressure allowance, the second sleeve type throttle valve is driven to open, water flow enters the main pipe from the cylinder body through the second sleeve type throttle valve, the water level in the cylinder body is reduced, the negative pressure extreme value of the main pipe is increased, and at the moment, the pressure release controller does not respond; the second sleeve type throttle valve is opened to a greater extent as the pressure difference between the main pipe and the cylinder is greater.
Preferably, the cylinder body is formed by connecting two hollow cylinders with different diameters up and down, the working platform is fixed in the hollow cylinder with the larger diameter at the upper part of the cylinder body, and the partition plate is fixed in the hollow cylinder with the smaller diameter at the lower part of the cylinder body. The structure increases the water storage capacity of the cylinder body, thereby improving the adjusting capacity of the whole device.
Preferably, the sleeve side walls of the first sleeve type throttle valve and the second sleeve type throttle valve are uniformly provided with grid type openings along the circumferential direction. Compared with other types of openings, the grid-type openings can adjust the water inlet and outlet amount more quickly and accurately when the piston moves up and down.
In the invention, the first tightness regulator and the second tightness regulator have the same structure and respectively comprise external threads arranged on the first connecting rod and the second connecting rod and an adjusting ring which is matched with the external threads and is provided with a gasket, and one end of each of the first spring and the second spring is respectively abutted against the corresponding gasket on the first tightness regulator and the second tightness regulator.
When the response threshold values of the pressure release controller and the pressure compensation controller need to be adjusted, the adjusting ring on the external thread is screwed to move the gasket, so that the purpose of adjusting the initial lengths of the first spring and the second spring is achieved.
Preferably, the first elastic flow regulator and the second elastic flow regulator respectively comprise a limiting device fixed with the working platform, and the top and the bottom of each limiting device are respectively provided with a limiting hole; an upper limiting stop block and a lower limiting stop block which are matched with the limiting holes are arranged on the first connecting rod and the second connecting rod respectively, the lower limiting stop block on the first connecting rod is arranged at the lower end of the first tightness adjuster, and the upper limiting stop block is arranged above the working platform; and the upper limit stop block on the second connecting rod is arranged at the upper end of the second tightness adjuster, and the lower limit stop block is arranged below the working platform.
Through setting up stop device and limit stop for piston on first sleeve type choke valve and the second sleeve type choke valve removes in the certain extent, makes the piston no longer continue to remove after breaking away from the sleeve completely, has increased the stability of whole device.
The limiting device can be arranged in a cylindrical shape or other shapes, and a part of the limiting device is positioned above the working platform, and a part of the limiting device is positioned below the working platform.
The limiting hole on the limiting device can be a round hole or a hole with other shapes, and the upper limiting stopper and the lower limiting stopper are preferably thin cylinders.
The pressure release controller and the pressure compensation controller which are matched with each other not only release the pressure of the main pipe when a positive water hammer occurs, but also supplement the pressure of the main pipe when a negative water hammer occurs; meanwhile, the response is only carried out when the pressure of the main pipe exceeds the pressure allowable limit, so that the water body exchange capacity is small, the water level fluctuation amplitude is small, the efficiency of water hammer pressure control is high, the water hammer pressure oscillation amplitude can be effectively controlled by using the method, and the method has important significance for guaranteeing the safe operation of a water supply pipeline.
Drawings
Fig. 1 is a schematic overall structure diagram of a mechanical intelligent water hammer pressure control device with an adjustable threshold according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a top view of an adjustable threshold mechanical intelligent water hammer pressure control device according to an embodiment of the present invention;
FIG. 4 is a schematic view of a slack adjuster according to an embodiment of the present invention;
FIG. 5 is a schematic view of the sleeve throttle valve according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of a standby mode of an adjustable threshold mechanical intelligent water hammer pressure control apparatus according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating a pressure release response mode of an adjustable threshold mechanical intelligent water hammer pressure control apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating a pressure compensation response mode of the threshold adjustable mechanical intelligent water hammer pressure control apparatus according to an embodiment of the present invention;
fig. 9 is a schematic diagram of the water hammer control effect of the mechanical intelligent water hammer pressure control device with an adjustable threshold in the embodiment of the present invention.
Detailed Description
The invention will be described in further detail below with reference to the drawings and examples, which are intended to facilitate the understanding of the invention without limiting it in any way.
As shown in fig. 1 to 3, the mechanical intelligent water hammer pressure control device with the adjustable threshold comprises a cylinder body 2, a pressure release controller 3 and a pressure compensation controller 4, wherein the cylinder body 2 is installed at the top end of a main pipe of a water supply pipeline system, water is stored inside the cylinder body, and the upper part of the cylinder body is communicated with the atmosphere. The pressure release controller 3 and the pressure compensation controller 4 are installed in the cylinder 2.
The upper part of the cylinder 2 is provided with a working platform 20, the lower part of the cylinder 2 is provided with a clapboard 21, and the clapboard 21 is provided with a water through hole 210 and a water through hole 211. The cylinder body 2 is composed of two hollow cylinders with the diameters being large at the top and small at the bottom, the working platform 20 is fixed in the hollow cylinder with the diameter being large at the upper part of the cylinder body, and the partition plate 21 is fixed in the hollow cylinder with the diameter being small at the lower part of the cylinder body.
As shown in fig. 2, the pressure release controller 3 includes an elastic flow regulator 30, a sleeve type throttle valve 31, and a connecting rod 32. The elastic flow regulator 30 includes a cylindrical limiting device 300, an upper limiting stop 301, a spring 302, a tightness adjuster 303, and a lower limiting stop 304. The upper and lower openings of the cylindrical limiting device 300 are formed, and the connecting rod 32 passes through the lower limiting hole of the cylindrical limiting device 300 and then extends out of the upper limiting hole of the cylindrical limiting device 300 after passing through the working platform 20; an upper limit stopper 301 fixed on the connecting rod 32 is positioned above the working platform 20, and a lower limit stopper 304 fixed on the connecting rod 32 is positioned above a lower limit hole of the cylindrical limiting device 300; the connecting rod 32 is sleeved with a spring 302, one end of the spring 302 is propped against the fixed platform 20, the other end of the spring 302 is propped against the tightness adjuster 303, and the tightness adjuster 303 and the lower limit stop block 304 are fixed on the connecting rod 32; the lower part of the connecting rod 32 is fixed with the sleeve type throttle valve 31; the lower end of the sleeve type throttle valve 31 is fixed at a water through hole 210 on the upper surface of the partition plate;
as shown in fig. 2 and 4, the slack adjuster 303 includes an external thread 3031 provided on the connecting rod 32 and an adjusting ring 3030 matching the external thread 3031, the adjusting ring 3030 having a gasket 3032 thereon; the gasket 3032 and the adjusting ring 3030 are sleeved on the connecting rod 32, and the adjusting ring 3030 can move up and down along the screw 3031 by screwing, so that the gasket 3032 is driven to move up and down along the axial direction.
As shown in fig. 5, the sleeve-type throttle valve 31 includes a piston 310 and a sleeve 311, and the sleeve 311 is provided with a grid-type opening 3110; the lower end of the connecting rod 32 is connected with the piston 310 of the sleeve-type throttle valve 31, the opening of the sleeve-type throttle valve 31 is controlled by pushing the piston 310, and the water body in the cylinder 2 is communicated with the main pipe water body through the grid-type opening 3110.
As shown in fig. 2, the pressure compensation controller 4 includes an elastic flow regulator 40, a sleeve type throttle 41, and a connecting rod 42. The elastic flow regulator 40 includes a cylindrical stopper 400, an upper stopper 401, a spring 402, a slack adjuster 403, and a lower stopper 404. The cylindrical limiting device 400 is provided with an upper opening and a lower opening, and the connecting rod 42 passes through the lower limiting hole of the cylindrical limiting device 400 and then extends out of the upper limiting hole of the cylindrical limiting device 400 after passing through the working platform 20; the upper limit stop 401 fixed on the connecting rod 42 is positioned below the upper limit hole of the cylindrical limiting device 400, and the lower limit stop 404 fixed on the connecting rod 42 is positioned below the working platform 20; a spring 402 is sleeved on the connecting rod 42, one end of the spring 402 abuts against the upper limit stop 404, and the other end abuts against the fixed platform 20; the lower limit stopper 404 is located below the fixed platform 20; the lower end of the connecting rod 42 is fixed with the sleeve type throttle valve 41; the lower end of the sleeve type throttle valve 41 is fixed to a water passage hole 211 on the upper surface of the partition plate.
As shown in fig. 2 and 4, the slack adjuster 403 includes an external thread 4031 provided on the connecting rod 42 and an adjusting ring 4030 matching the external thread 4031, the adjusting ring 4030 having a spacer 4032 thereon; the shim 4032 and the adjusting ring 4030 are sleeved on the connecting rod 42, and the adjusting ring 4030 can move up and down along the screw 4031 by screwing, so that the shim 4032 is driven to move up and down in the axial direction.
The sleeve-type throttle valve 41 includes a piston 410 and a sleeve 411, and its specific structure is the same as that of the sleeve-type throttle valve 31.
The present invention can adjust the response threshold of the pressure release controller 3 by moving the pad 3032 by threading the nut 3030 in the slack adjuster 303, thereby adjusting the initial length of the spring 302. Similarly, the initial length of the spring 402 is adjusted by turning the nut 4030 in the slack adjuster 403, thereby moving the spacer 4032, to adjust the response threshold of the pressure compensation controller 4.
The upper limit stopper 301 and the lower limit stopper 304 of the elastic flow regulator 30 are used for limiting the movement of the piston 310 in the sleeve type throttle valve 31 within a certain range, the piston 310 is completely positioned in the sleeve 311 when the sleeve type throttle valve 31 is completely closed, and the piston 310 is separated from the sleeve 311 and stops moving when the sleeve type throttle valve 31 is completely opened. Similarly, the upper limit stopper 401 and the lower limit stopper 404 of the elastic flow regulator 40 are used for limiting the movement of the piston 410 in the sleeve-type throttle valve 41 within a certain range, the piston 410 is entirely located inside the sleeve 411 when the sleeve-type throttle valve 41 is fully closed, and the movement of the piston 410 is stopped after the piston 410 is separated from the sleeve 411 when the sleeve-type throttle valve 41 is fully opened.
As shown in fig. 6 to 8, when a water hammer phenomenon occurs in a water supply line, pressure and flow rate in the line fluctuate dramatically. The invention has three different response modes for the pressure oscillation in the water hammer phenomenon:
(1) standby mode: referring to fig. 6, when the positive and negative pressure of the main pipe are within the main pipe pressure allowable upper and lower limit values, the pressure compensation releaser 3 and the pressure compensation controller 4 do not respond, the sleeve type throttle valve 31 and the sleeve type throttle valve 41 are kept closed, and no water flows between the cylinder body 2 and the main pipe.
(2) Pressure release response mode: referring to fig. 7, the main pipe pressure allowable upper limit value is the magnitude of the instantaneous water level of the cylinder 2 plus the response threshold value, when the positive pressure of the main pipe pressure exceeds the main pipe pressure allowable upper limit value, that is, when a positive water hammer occurs, the pressure difference between the main pipe and the cylinder 2 causes the response of the pressure release controller 3, the elastic flow regulator 30 flexibly moves up to drive the opening of the sleeve-type throttle valve 31 according to the magnitude of the main pipe pressure allowable upper limit value, water flows from the main pipe into the cylinder 2 through the grid-type opening hole, the water level in the cylinder 2 rises, the main pipe positive pressure extreme value is reduced, and at this time, the pressure compensation controller 4 does not respond; the larger the pressure difference between the main pipe and the cylinder 2, the larger the opening degree of the sleeve-type throttle valve 31.
(3) And (3) a pressure compensation response mode: referring to fig. 8, the main pipe pressure allowable lower limit value is the magnitude of the instantaneous water level minus response threshold value of the cylinder 2, when the negative pressure of the main pipe pressure exceeds the main pipe pressure allowable lower limit value, that is, when a negative water hammer occurs, the pressure difference between the main pipe and the cylinder 2 causes the response of the pressure compensation controller 4, the elastic flow regulator 40 flexibly moves downwards according to the magnitude of the main pipe pressure allowable lower limit value to drive the sleeve type throttle valve 41 to open, water flow enters the main pipe from the cylinder 2 through the grid type opening hole, the water level in the cylinder 2 is reduced, so that the negative pressure extreme value of the main pipe is increased, and at this time, the pressure release controller 3; the larger the pressure difference between the main pipe and the cylinder 2, the larger the opening degree of the sleeve type throttle valve 41.
In this embodiment, the water hammer pressure control capability of the present invention is verified through numerical simulation, and as shown in fig. 9, it is a comparison graph of the pressure fluctuation range effect of the water hammer control device, the conventional surge shaft and the water hammer control device in the water supply pipeline, which illustrates that the present invention can effectively reduce the fluctuation range of the water hammer pressure of the pipeline, shorten the time of the large-amplitude reciprocating oscillation of the water hammer pressure, and has a better regulation effect than the conventional surge shaft.
The embodiments described above are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions and equivalents made within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (6)
1. A mechanical intelligent water hammer pressure control device with an adjustable threshold value is characterized by comprising a cylinder, a pressure release controller and a pressure compensation controller, wherein the pressure release controller and the pressure compensation controller are arranged in the cylinder;
the pressure release controller consists of a first sleeve type throttling valve, a first connecting rod and a first elastic flow regulator, wherein a sleeve of the first sleeve type throttling valve is fixed at a first water through hole on the upper surface of the partition plate; the lower end of the first connecting rod is fixedly connected with a piston on the first sleeve type throttle valve, and the upper end of the first connecting rod penetrates through the working platform; the first elastic flow regulator comprises a first tightness regulator fixed on the first connecting rod and a first spring of which two ends are respectively propped against the first tightness regulator and the lower surface of the working platform;
the pressure compensation controller consists of a second sleeve type throttling valve, a second connecting rod and a second elastic flow regulator, wherein a sleeve of the second sleeve type throttling valve is fixed at a second water through hole on the lower surface of the partition plate; the lower end of the second connecting rod is fixedly connected with a piston on the second sleeve type throttle valve, and the upper end of the second connecting rod penetrates through the working platform; and the second elastic flow regulator comprises a second tightness regulator fixed on the second connecting rod and a second spring with two ends respectively abutting against the second tightness regulator and the upper surface of the working platform.
2. The threshold-adjustable mechanical intelligent water hammer pressure control device according to claim 1, wherein the cylinder is formed by connecting two hollow cylinders with different diameters up and down, the working platform is fixed in the hollow cylinder with the larger diameter at the upper part of the cylinder, and the partition plate is fixed in the hollow cylinder with the smaller diameter at the lower part of the cylinder.
3. The threshold-adjustable mechanical intelligent water hammer pressure control device according to claim 1, wherein the sleeve side walls of the first sleeve-type throttle valve and the second sleeve-type throttle valve are uniformly provided with grid-type openings along the circumferential direction.
4. The threshold-adjustable mechanical intelligent water hammer pressure control device according to claim 1, wherein the first and second tightening adjusters have the same structure and comprise external threads arranged on the first and second connecting rods and adjusting rings with gaskets matched with the external threads, and one ends of the first and second springs respectively abut against the gaskets on the corresponding first and second tightening adjusters.
5. The threshold-adjustable mechanical intelligent water hammer pressure control device according to claim 1, wherein the first elastic flow regulator and the second elastic flow regulator each comprise a limiting device fixed with the working platform, and the top and the bottom of each limiting device are respectively provided with a limiting hole;
an upper limiting stop block and a lower limiting stop block which are matched with the limiting holes are arranged on the first connecting rod and the second connecting rod respectively, the lower limiting stop block on the first connecting rod is arranged at the lower end of the first tightness adjuster, and the upper limiting stop block is arranged above the working platform; and the upper limit stop block on the second connecting rod is arranged at the upper end of the second tightness adjuster, and the lower limit stop block is arranged below the working platform.
6. The threshold-adjustable mechanical intelligent water hammer pressure control device according to claim 5, wherein the limiting holes of the limiting device are all round holes, and the upper limiting stopper and the lower limiting stopper are all thin cylinders.
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| CN201910305013.2A CN110185874B (en) | 2019-04-16 | 2019-04-16 | Mechanical intelligent water hammer pressure control device with adjustable threshold |
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| CN201910305013.2A CN110185874B (en) | 2019-04-16 | 2019-04-16 | Mechanical intelligent water hammer pressure control device with adjustable threshold |
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| CN110185874B true CN110185874B (en) | 2020-05-12 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1723396A1 (en) * | 1989-04-27 | 1992-03-30 | Makharadze Leon | Check valve |
| CN1430707A (en) * | 2000-05-31 | 2003-07-16 | 莫菲克科技股份公司 | Hydraulic percussion/pressing device |
| CN102606842A (en) * | 2012-03-23 | 2012-07-25 | 中国市政工程西北设计研究院有限公司 | Protecting device for forward water hammer |
| CN204567203U (en) * | 2015-04-17 | 2015-08-19 | 郑松 | Automobile constant force suspension |
| CN204922206U (en) * | 2015-09-18 | 2015-12-30 | 福建科达消防阀门制造有限公司 | Novel valve is eliminated to water hammer |
| CN207161857U (en) * | 2017-09-26 | 2018-03-30 | 嘉兴艾迪西暖通科技有限公司 | A kind of water hammer absorber |
-
2019
- 2019-04-16 CN CN201910305013.2A patent/CN110185874B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1723396A1 (en) * | 1989-04-27 | 1992-03-30 | Makharadze Leon | Check valve |
| CN1430707A (en) * | 2000-05-31 | 2003-07-16 | 莫菲克科技股份公司 | Hydraulic percussion/pressing device |
| CN102606842A (en) * | 2012-03-23 | 2012-07-25 | 中国市政工程西北设计研究院有限公司 | Protecting device for forward water hammer |
| CN204567203U (en) * | 2015-04-17 | 2015-08-19 | 郑松 | Automobile constant force suspension |
| CN204922206U (en) * | 2015-09-18 | 2015-12-30 | 福建科达消防阀门制造有限公司 | Novel valve is eliminated to water hammer |
| CN207161857U (en) * | 2017-09-26 | 2018-03-30 | 嘉兴艾迪西暖通科技有限公司 | A kind of water hammer absorber |
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| CN110185874A (en) | 2019-08-30 |
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