CN218236275U - Water attack relief valve - Google Patents
Water attack relief valve Download PDFInfo
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- CN218236275U CN218236275U CN202220533737.XU CN202220533737U CN218236275U CN 218236275 U CN218236275 U CN 218236275U CN 202220533737 U CN202220533737 U CN 202220533737U CN 218236275 U CN218236275 U CN 218236275U
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Abstract
The utility model discloses a water hammer relief valve, which comprises a main valve, a first pilot valve and a second pilot valve; a first control pipeline is connected between a water inlet of the main valve and a water inlet of the first pilot valve, a second control pipeline is connected between the water inlet of the main valve and a water inlet of the second pilot valve, a control chamber of the main valve is respectively connected with the water inlet of the first pilot valve and the water inlet of the second pilot valve through a third control pipeline and a fourth control pipeline, a water outlet of the first pilot valve is connected with a first drainage pipeline, a water outlet of the second pilot valve is connected with a water outlet of the main valve through a second drainage pipeline, a ball valve is installed on the second drainage pipeline, a fifth control pipeline is connected between the water inlet of the main valve and the control chamber of the main valve, and a needle valve is installed on the fifth control pipeline. The water hammer type slow-closing valve can adapt to low-pressure and high-pressure working conditions, effectively increases the adjustable range of the pressure relief value of the valve, can quickly react when water hammer occurs, is sensitive in action, can be stably and controllably slowly closed after pressure relief is finished, and is safe and reliable to use.
Description
Technical Field
The utility model relates to the technical field of valves, concretely relates to water hammer relief valve.
Background
In order to ensure the safe and stable operation of the pipeline, a proper water attack discharge system is arranged, and the treatment of the accident condition of the pipeline is particularly important. The water hammer relief system is used for pressure relief protection after the pressure reaches or exceeds a relief valve pressure relief set value. The relief valve is therefore an important device for securing the pipeline.
The existing water hammer relief valve mostly adopts a pilot type structural form of a main valve and a pilot valve, and the pilot valve drives the main valve to move backwards so as to realize the opening, draining and pressure reduction of the main valve. However, the above water hammer relief valve has the following disadvantages in use: it can only realize opening the main valve and sluicing decompression under the water conservancy reaches certain high-pressure condition, adjusts application range narrower, and the valve closing process is too fast moreover, does not have the cushioning process, causes the damage easily.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the above-mentioned background art, the utility model provides a water hammer relief valve, it is applicable to low pressure and high-pressure operating mode, effectively increases the adjustable range of valve pressure release value to can react rapidly when the water hammer takes place, the action is sensitive, can steadily controllable slowly close after the pressure release finishes, uses safe and reliable.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a water hammer relief valve, which comprises a main valve, a first pilot valve, a second pilot valve, a needle valve and a ball valve;
a first control pipeline is connected between the water inlet of the main valve and the water inlet of the first pilot valve, a second control pipeline is connected between the water inlet of the main valve and the water inlet of the second pilot valve, a control chamber of the main valve is respectively connected with the water inlet of the first pilot valve and the water inlet of the second pilot valve through a third control pipeline and a fourth control pipeline, a water outlet of the first pilot valve is connected with a first drainage pipeline, a water outlet of the second pilot valve is connected with a water outlet of the main valve through a second drainage pipeline, a ball valve is installed on the second drainage pipeline, a fifth control pipeline is connected between the water inlet of the main valve and the control chamber of the main valve, and a needle valve is installed on the fifth control pipeline. When the pilot valve is used, the opening pressure of the main valve can be adjusted through the adjusting bolts on the first pilot valve and the second pilot valve.
The further improvement is that a pressure gauge is installed on the fifth control pipeline.
The needle valve is adjusted through the matching of the pressure gauge and the needle valve, so that the valve closing speed is controlled.
The improved structure is characterized in that the main valve comprises a valve body, a valve cover, a diaphragm, a driving assembly, a valve clack, a sealing gasket and a valve seat, the valve cover is arranged at the top end of the valve body, the diaphragm is arranged between the valve body and the valve cover in a sealing and pressing mode, a control chamber is formed between the diaphragm and the valve cover, an internal flow passage is formed between the diaphragm and the valve body, the valve seat is located inside the valve body, a medium passage opening is formed in the internal flow passage, the driving assembly is located in the control chamber and connected with the diaphragm, the valve clack is arranged at the bottom end of the diaphragm, the sealing gasket is arranged at the bottom end of the valve clack, and the bottom end of the sealing gasket is in movable sealing contact with the top end of the valve seat to seal or open the medium passage opening.
When the valve clack moves downwards to the sealing gasket at the bottom end of the valve clack and the top end of the valve seat are contacted to form a sealing surface, a medium passage opening in the main valve can be sealed, so that an internal flow passage in the main valve is disconnected, and the main valve is in a closed state; when the pressure in the control chamber of the main valve is lower than the pressure at the water inlet of the main valve, the driving assembly and the diaphragm move upwards to drive the valve clack at the bottom end of the diaphragm to move upwards stably, and when the valve clack moves upwards to separate the sealing gasket at the bottom end of the valve clack from the top end of the valve seat, the medium passage port in the main valve can be opened, the opening degree of the medium passage in the main valve can be adjusted, so that the internal flow passage in the main valve is opened, and the main valve is in an open state.
In a further improvement, the driving assembly comprises a guide sleeve, a valve rod and an elastic member, the top end of the valve rod is slidably arranged in the guide sleeve at the inner top of the valve cover, the bottom end of the valve rod penetrates through the diaphragm and the valve clack and is movably connected with the valve seat, the elastic member is arranged in a control chamber of the main valve, and the elastic member is sleeved outside the valve rod.
Through the cooperation of uide bushing, valve rod and elastic component among the drive assembly, diaphragm and valve clack can be steady reciprocate, play the buffering guard action to the main valve, prolong the life of main valve.
The further improvement is that a membrane pressing plate is arranged at the top end of the membrane, and a sealing gasket pressing plate is arranged at the bottom end of the sealing gasket.
The valve body and the valve cover are fixedly connected through a plurality of bolt assemblies.
Through setting up, conveniently assemble valve body and valve gap.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses well water hammer bleeder valve, it is provided with first pilot valve, second pilot valve, and two pilot valves are connected with control pipeline respectively, and under the low pressure operating mode, first pilot valve is opened, and the main valve inlet port rivers are discharged by first control pipeline, first pilot valve and first drain pipe way to realized sluicing step-down; under the high-pressure working condition, the second pilot valve is opened, water in the control chamber of the main valve is quickly discharged by the third control pipeline and the first pilot valve, the fourth control pipeline and the second pilot valve respectively, the first pilot valve and the second pilot valve assist in quickly opening the main valve, and the water is quickly drained and depressurized; after pressure relief is finished, the first pilot valve and the second pilot valve are in a closed state, a water flow part at the water inlet of the main valve enters a control chamber of the main valve through a fifth control pipeline, and the valve closing speed is controlled through the needle valve, so that stable and controllable slow closing of the main valve is realized;
this water hammer relief valve can be applicable to low pressure and high-pressure operating mode, effectively increases the adjustable range of valve pressure release value to can react rapidly when the water hammer takes place, the action is sensitive, can steadily controllable slowly close after the pressure release finishes, use safe and reliable.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of the middle water hammer relief valve of the present invention;
wherein, the specific reference numbers are: the valve comprises a main valve 1, a first control pipeline 2, a first pilot valve 3, a second control pipeline 4, a second pilot valve 5, a third control pipeline 6, a fourth control pipeline 7, a fifth control pipeline 8, a pressure gauge 9, a needle valve 10, a first drain pipeline 11, a second drain pipeline 12, a ball valve 13, a valve body 14, a valve cover 15, a diaphragm 16, a diaphragm pressing plate 17, a guide sleeve 18, a valve rod 19, an elastic part 20, a valve seat 21, a medium passage opening 22, a valve clack 23, a sealing gasket 24, a sealing gasket pressing plate 25 and a bolt assembly 26.
Detailed Description
The embodiment of the utility model discloses a water hammer relief valve, as shown in figure 1, comprising a main valve 1, a first pilot valve 3, a second pilot valve 5, a needle valve 10 and a ball valve 13; a first control pipeline 2 is connected between a water inlet of the main valve 1 and a water inlet of the first pilot valve 3, a second control pipeline 4 is connected between the water inlet of the main valve 1 and a water inlet of the second pilot valve 5, a control chamber of the main valve 1 is respectively connected with the water inlet of the first pilot valve 3 and the water inlet of the second pilot valve 5 through a third control pipeline 6 and a fourth control pipeline 7, a water outlet of the first pilot valve 3 is connected with a first water drainage pipeline 11, a water outlet of the second pilot valve 5 is connected with a water outlet of the main valve 1 through a second water drainage pipeline 12, a ball valve 13 is installed on the second water drainage pipeline 12, a fifth control pipeline 8 is connected between the water inlet of the main valve 1 and the control chamber of the main valve 1, and a needle valve 10 is installed on the fifth control pipeline 8. When in use, the opening pressure of the main valve 1 can be adjusted through the adjusting bolts on the first pilot valve 3 and the second pilot valve 5.
Under normal working conditions, the first pilot valve 3 and the second pilot valve 5 are in a closed state, and the main valve 1 is also in a reliable closed state;
under the working condition of low pressure, the water flow pressure is transmitted to the lower part of a diaphragm in the main valve 1 and is also transmitted to the lower parts of diaphragms of the first pilot valve 3 and the second pilot valve 5, because the sensitivity of the diaphragm of the first pilot valve 3 is relatively strong, at the moment, an elastic piece in the first pilot valve 3 is compressed and moves upwards under the increased upward action, a fluid passage in the first pilot valve 3 is opened, and the water flow at a water inlet of the main valve 1 is discharged from the first control pipeline 2, the first pilot valve 3 and the first water discharge pipeline 11, so that certain water drainage and pressure reduction is realized;
under the high-pressure working condition, the water flow pressure is increased until an elastic part in the second pilot valve 5 is compressed and moves upwards under the action of larger upward force, a fluid passage in the second pilot valve 5 is opened, meanwhile, the acting force below a diaphragm in the main valve 1 is also increased, the acting force drives the water flow in a control chamber of the main valve 1 to be quickly discharged by the third control pipeline 6, the first pilot valve 3, the fourth control pipeline 7 and the second pilot valve 5 respectively, and the first pilot valve 3 and the second pilot valve 5 assist in quickly opening the main valve 1 to quickly discharge water and reduce pressure;
after the pressure relief is finished, the first pilot valve 3 and the second pilot valve 5 are in a closed state, a water flow part at a water inlet of the main valve 1 enters a control chamber of the main valve 1 through a fifth control pipeline 8, the valve closing speed is controlled through the needle valve 10, and the stable and controllable slow closing of the main valve 1 is realized.
Wherein, a pressure gauge 9 is arranged on the fifth control pipeline 8. The needle valve 10 is adjusted through the cooperation of the pressure gauge 9 and the needle valve 10, so that the valve closing speed is controlled.
The main valve 1 comprises a valve body 14, a valve cover 15, a diaphragm 16, a driving assembly, a valve flap 23, a sealing gasket 24 and a valve seat 21, wherein the valve cover 15 is arranged at the top end of the valve body 14, the diaphragm 16 is hermetically pressed between the valve body 14 and the valve cover 15, a control chamber is formed between the diaphragm 16 and the valve cover 15, an internal flow passage is formed between the diaphragm 16 and the valve body 14, the valve seat 21 is positioned inside the valve body 14 and forms a medium passage opening 22 in the internal flow passage, the driving assembly is positioned in the control chamber and connected with the diaphragm 16, the valve flap 23 is arranged at the bottom end of the diaphragm 16, the sealing gasket 24 is arranged at the bottom end of the valve flap 23, and the bottom end of the sealing gasket 24 is in movable sealing contact with the top end of the valve seat 21 to seal or open the medium passage opening 22. When the pressure in the control chamber of the main valve 1 is greater than the pressure at the water inlet of the main valve 1, the driving component and the diaphragm 16 move downwards to drive the valve clack 23 at the bottom end of the diaphragm 16 to stably move downwards, and when the valve clack 23 moves downwards until the sealing gasket 24 at the bottom end of the valve clack 23 contacts with the top end of the valve seat 21 to form a sealing surface, the medium channel port 22 in the main valve 1 can be sealed, so that an internal flow channel in the main valve 1 is disconnected, and the main valve 1 is in a closed state; when the pressure in the control chamber of the main valve 1 is lower than the pressure at the water inlet of the main valve 1, the driving component and the diaphragm 16 move upward, and then the valve flap 23 at the bottom end of the diaphragm 16 is driven to move upward smoothly, when the valve flap 23 moves upward until the sealing gasket 24 at the bottom end thereof is separated from the top end of the valve seat 21, the medium passage port 22 in the main valve 1 can be opened, and the opening degree of the medium passage in the main valve 1 can be adjusted, so that the internal flow passage in the main valve 1 is opened, and the main valve 1 is in an opened state.
The driving assembly comprises a guide sleeve 18, a valve rod 19 and an elastic part 20, the top end of the valve rod 19 is arranged in the guide sleeve 18 at the inner top of the valve cover 15 in a sliding mode, the bottom end of the valve rod 19 penetrates through the diaphragm 16 and the valve clack 23 and is movably connected with the valve seat 21, the elastic part 20 is located in a control chamber of the main valve 1, and the elastic part 20 is sleeved on the outer side of the valve rod 19. Through the cooperation of the guide sleeve 18, the valve rod 19 and the elastic element 20 in the driving assembly, the diaphragm 16 and the valve clack 23 can move up and down stably, so that the main valve 1 is protected by buffering, and the service life of the main valve 1 is prolonged.
Wherein, the top end of the diaphragm 16 is provided with a diaphragm pressing plate 17, and the bottom end of the sealing gasket 24 is provided with a sealing gasket pressing plate 25.
Wherein, the valve body 14 and the valve cover 15 are fixedly connected through a plurality of bolt assemblies 26. Through setting up, conveniently assemble valve body 14 with valve gap 15.
In conclusion, the water hammer relief valve can be suitable for low-pressure and high-pressure working conditions, the adjustable range of the pressure relief value of the valve is effectively enlarged, the water hammer can quickly react when in water hammer, the action is sensitive, the valve can be stably and controllably slowly closed after the pressure relief is finished, and the water hammer relief valve is safe and reliable to use.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.
Claims (6)
1. A water hammer relief valve is characterized by comprising a main valve, a first pilot valve, a second pilot valve, a needle valve and a ball valve;
a first control pipeline is connected between the water inlet of the main valve and the water inlet of the first pilot valve, a second control pipeline is connected between the water inlet of the main valve and the water inlet of the second pilot valve, a control chamber of the main valve is respectively connected with the water inlet of the first pilot valve and the water inlet of the second pilot valve through a third control pipeline and a fourth control pipeline, a water outlet of the first pilot valve is connected with a first drainage pipeline, a water outlet of the second pilot valve is connected with a water outlet of the main valve through a second drainage pipeline, a ball valve is installed on the second drainage pipeline, a fifth control pipeline is connected between the water inlet of the main valve and the control chamber of the main valve, and a needle valve is installed on the fifth control pipeline.
2. The water hammer relief valve of claim 1, wherein a pressure gauge is mounted on the fifth control line.
3. The water hammer relief valve of claim 1, wherein the main valve includes a valve body, a valve cover, a diaphragm, a driving assembly, a valve flap, a sealing gasket, and a valve seat, the valve cover is disposed at a top end of the valve body, the diaphragm is sealingly press-fitted between the valve body and the valve cover, a control chamber is formed between the diaphragm and the valve cover, an internal flow passage is formed between the diaphragm and the valve body, the valve seat is disposed inside the valve body, and a medium passage opening is formed in the internal flow passage, the driving assembly is disposed in the control chamber and connected to the diaphragm, the valve flap is disposed at a bottom end of the diaphragm, the sealing gasket is disposed at a bottom end of the valve flap, and a bottom end of the sealing gasket is in movable sealing contact with a top end of the valve seat to seal or open the medium passage opening.
4. The water hammer relief valve of claim 3, wherein the drive assembly includes a guide sleeve, a stem with a top end slidably disposed in the guide sleeve at a top portion of the interior of the bonnet, a bottom end passing through the diaphragm and the flap and movably coupled to the valve seat, and a resilient member disposed within the control chamber of the main valve and sleeved outside the stem.
5. The water hammer relief valve according to claim 3 or 4, wherein the diaphragm top end is provided with a diaphragm pressure plate and the gasket bottom end is provided with a gasket pressure plate.
6. The water hammer relief valve of claim 5, wherein the valve body and the valve cover are fixedly connected by a plurality of bolt assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220533737.XU CN218236275U (en) | 2022-03-11 | 2022-03-11 | Water attack relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220533737.XU CN218236275U (en) | 2022-03-11 | 2022-03-11 | Water attack relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218236275U true CN218236275U (en) | 2023-01-06 |
Family
ID=84662730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220533737.XU Active CN218236275U (en) | 2022-03-11 | 2022-03-11 | Water attack relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218236275U (en) |
-
2022
- 2022-03-11 CN CN202220533737.XU patent/CN218236275U/en active Active
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