CN117028586A - Water hammer stop valve is prevented to area runner - Google Patents
Water hammer stop valve is prevented to area runner Download PDFInfo
- Publication number
- CN117028586A CN117028586A CN202310723884.2A CN202310723884A CN117028586A CN 117028586 A CN117028586 A CN 117028586A CN 202310723884 A CN202310723884 A CN 202310723884A CN 117028586 A CN117028586 A CN 117028586A
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- Prior art keywords
- valve
- cavity
- water hammer
- driving
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000012856 packing Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 230000006837 decompression Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 12
- 239000000945 filler Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a water hammer preventing stop valve with a rotating wheel, which relates to the technical field of valves and comprises a valve body, wherein the valve body is provided with an inlet cavity and an outlet cavity, the inlet cavity and the outlet cavity are communicated through a valve body middle cavity, the middle cavity is provided with a water hammer preventing decompression device for preventing impact damage of a water hammer on the valve when the stop valve is closed, the outlet cavity is provided with a drainage port and a drainage cavity, the drainage cavity is communicated with the outlet cavity and the middle cavity, the water hammer preventing decompression device comprises a rotating disc and a driving mechanism, the rotating disc is provided with a plurality of disc grooves, rotating discs are movably arranged in the disc grooves, the valve rod is eccentrically arranged, and the driving mechanism can drive the rotating disc to move downwards when the water hammer occurs and enable outlet cavity medium to push the rotating disc to rotate so as to eliminate the water hammer. The invention can effectively reduce impact damage of the water hammer to the valve, can decompress the backflow medium and prolongs the service life.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a waterproof hammer stop valve with a rotating wheel.
Background
The stop valve is also called a stop valve, belongs to a forced sealing valve, is one of the most widely used valves because of small friction force between sealing surfaces in the opening and closing process, durability, small opening height, easy manufacture and convenient maintenance. The opening and closing process of the stop valve is as follows: when the valve is in a closed state, the wrench is rotated clockwise to drive the valve rod to rotate clockwise, and as the threaded connection is formed between the upper part of the valve rod and the threaded sleeve, the valve rod drives the valve clack to move upwards while the valve rod rotates, the valve clack sealing surface breaks away from the valve seat sealing surface, the inlet cavity is communicated with the outlet cavity, the valve is opened, otherwise, the valve rod drives the valve clack to move downwards, the valve clack sealing surface compresses the valve seat sealing surface, the inlet cavity is isolated from the outlet cavity, and the valve is closed. As an important element of a pipeline, the stop valve realizes the functions of medium conveying, stopping, regulating and the like, is one of the most important cut-off valves, and plays an important role in the fields of aerospace, petrochemical industry, electric power and the like.
When the conventional stop valve is closed, the medium at the outlet side is easy to flow back to cause water hammer, so that the valve is easy to break, and therefore, the stop valve capable of resisting the water hammer needs to be provided, for example, the Chinese patent invention: the utility model provides a water hammer resistant stop valve (CN 110671502B) just discloses a water hammer resistant stop valve, and it is through setting up water hammer resistant device between valve body and valve plate, water hammer resistant device includes water hammer resistant slider and compression spring, and it supports compression spring through the slip of water hammer resistant slider, makes the pressure of water and compression spring's pressure balance realize water hammer resistant, but this kind of structure is with the pressure of corresponding water hammer resistant device counter-current medium, lacks the pressure release to the backward flow medium, and long-time use is fragile, influences life.
Disclosure of Invention
Aiming at the problems that in the prior art, when the stop valve is closed, medium at the outlet side is easy to flow back, water hammer is caused, and impact force of the backflow medium cannot be relieved, so that the valve is easy to damage, the invention provides the stop valve with the rotating wheel water hammer, which can effectively reduce impact damage of the water hammer to the valve, can release pressure of the backflow medium, and prolongs service life.
The technical scheme provided by the invention is as follows:
the utility model provides a take runner waterproof hammer stop valve, includes the valve body, the valve body is equipped with inlet chamber and export chamber, inlet chamber and export chamber pass through valve body middle chamber intercommunication, the valve body upper end is equipped with the valve gap, be equipped with the valve rod on the valve gap, the valve rod upper end is connected with the hand wheel, and the lower extreme passes the valve gap extends to valve body middle chamber, the valve rod lower extreme is equipped with the valve clack, be equipped with the disk seat in the valve body, the valve clack has with the isolated first position in inlet chamber and the export chamber of disk seat laminating and with the second position in valve seat separation intercommunication inlet chamber and export chamber, the middle chamber is equipped with the waterproof hammer pressure relief device that is used for preventing the impact damage of water hammer effect to the valve when the stop valve closes, the export chamber is equipped with drainage mouth and middle chamber, waterproof hammer pressure relief device includes carousel, actuating mechanism, the carousel is equipped with a plurality of piece grooves, the activity in the piece inslot is provided with the piece, eccentric valve rod sets up, actuating mechanism can drive the carousel down and make export chamber medium promote the carousel to rotate when the water hammer takes place and eliminate water.
The driving mechanism comprises a driving rod and a driving sleeve, the driving sleeve is sleeved on the valve rod, the rotary disc is arranged at the lower end of the driving sleeve, a driving cavity is arranged between the drainage cavity and the middle cavity, the driving rod comprises a driving head and a rack, the driving head is movably arranged in the driving cavity, and the surface of the driving sleeve is meshed with the rack.
The valve body is internally provided with a cover cap, and a first driving spring is arranged between the driving head and the cover cap.
The valve body is internally provided with a cylinder sleeve, the cylinder sleeve and a valve cover form a control cavity, the upper part of the driving sleeve extends into the control cavity, the upper end of the driving sleeve is provided with a control plate, the control plate is movably arranged in the control cavity, and the outer edge of the control plate is in threaded connection with the inner wall of the cylinder sleeve.
And a reset spring is arranged between the control plate and the lower end of the cylinder sleeve.
The driving sleeve is provided with a positioning block for positioning and fixing the turntable.
The rotary plate is provided with a dovetail groove, the rotary plate is provided with a pull rod, the lower end of the pull rod extends into the dovetail groove, and the lower end of the pull rod is provided with a lug matched with the dovetail groove.
The second driving spring is arranged in the sheet groove, one end of the second driving spring is propped against the rotating sheet, and the other end is propped against the inner wall of the sheet groove.
The outlet cavity is provided with an L-shaped drainage tube which is communicated with the drainage port.
The valve cover is provided with a packing cavity, the valve rod penetrates through the packing cavity to extend into the valve body, and a gland for compressing packing in the packing cavity is arranged above the valve cover.
The invention has the beneficial effects that: according to the invention, the water hammer preventing decompression device is arranged at the middle cavity of the stop valve, when the stop valve is closed to generate a water hammer, the impact damage of the water hammer to the valve can be effectively reduced, the valve shaft is eccentrically arranged, so that the thrust of a medium flowing back from the outlet on one side of the rotary plate is greater than that of the rotary plate on the other side, the rotary plate can be pushed to rotate according to the same direction by the backflow medium, the medium enters from one side of the rotary plate and flows out from the other side, the flowing-out medium is used for propping against the medium flowing back from the outlet side to decompress the backflow medium, and the service life of the valve can be effectively prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of a shut-off valve according to an embodiment of the present invention;
FIG. 2 is a schematic view in partial section E-E of FIG. 1;
FIG. 3 is a schematic illustration of FIG. 2 when a water hammer occurs;
FIG. 4 is a schematic view of section D-D of FIG. 3;
fig. 5 is a schematic view of section C-C of fig. 2.
The valve comprises a 1-valve body, a 2-inlet cavity, a 3-valve seat, a 4-valve clack, a 5-rotating piece, a 6-second driving spring, a 7-dovetail groove, an 8-pull rod, a 9-rotating disc, a 10-positioning block, an 11-driving sleeve, a 12-cylinder sleeve, a 13-reset spring, a 14-control plate, a 15-valve cover, a 16-bolt, a 17-gland, a 18-screw sleeve, a 19-hand wheel, a 20-packing, a 21-valve rod, a 22-middle cavity, a 23-rack, a 24-cap, a 25-first driving spring, a 26-driving head, a 27-driving cavity, a 28-drainage cavity, a 29-drainage tube, a 30-outlet cavity, a 31-middle cavity center line, a 32-valve rod center line, a 33-sheet clamp, a 34-sheet groove, a 35-control cavity and a 36-bump.
Description of the embodiments
Embodiments of the present invention are further described below with reference to the accompanying drawings.
As shown in figure 1, the waterproof hammer stop valve with the rotating wheel comprises a valve body 1, wherein the valve body 1 is provided with an inlet cavity 2 and an outlet cavity 30, the inlet cavity 2 and the outlet cavity 30 are communicated through a valve body middle cavity 22, the upper end of the valve body 1 is provided with a valve cover 15, the valve cover 15 is provided with a valve rod 21, the valve cover 15 is provided with a filler cavity, the valve rod 21 penetrates through the filler cavity to extend into the valve body 1, a gland 17 for compressing filler 20 in the filler cavity is arranged above the valve cover 15, the tightness of the valve cover 15 and the valve rod 21 is fully ensured, the upper end of the valve rod 21 is connected with a hand wheel 19, the upper part of the valve rod 21 is provided with a screw sleeve 18, the lower end of the valve rod 21 penetrates through the valve cover 15 and extends to the valve body middle cavity 22, the lower end of the valve rod 21 is provided with a valve clack 4, and the valve seat 3 is arranged in the valve body 1.
The stop valve is normally opened and closed: when the valve is in a closed state, the hand wheel 19 is rotated clockwise to drive the valve rod 21 to rotate clockwise, and as the upper part of the valve rod 21 and the screw sleeve 18 form threaded connection, the valve rod 21 drives the valve clack 4 to move upwards while the valve rod 21 rotates, the sealing surface of the valve clack 4 breaks away from the sealing surface of the valve seat, the inlet cavity 2 is communicated with the outlet cavity 30, the valve is opened, otherwise, the valve rod 21 rotates anticlockwise to drive the valve clack 4 to move downwards, the sealing surface of the valve clack 4 presses the sealing surface of the valve seat 3, the inlet cavity 2 is isolated from the outlet cavity 30, and the valve is closed.
As shown in fig. 1-3, in this embodiment, the valve rod 21 is eccentrically disposed, the valve rod center line 32 is offset to the left by a distance a relative to the middle cavity center line 31, the outlet cavity 30 is provided with a drainage port and a drainage cavity 28, the drainage cavity 28 communicates the outlet cavity 30 and the middle cavity 22, the middle cavity 22 is provided with a water hammer preventing pressure reducing device for preventing impact damage of water hammer on the valve when the stop valve is closed, and the water hammer preventing pressure reducing device comprises a turntable 9 and a driving mechanism.
As shown in fig. 4-5, 6 sheet clips 33 are uniformly arranged on the turntable 9, a sheet groove 34 is arranged in the sheet clips 33, a rotary sheet 5 is movably arranged in the sheet groove 34, specifically, a dovetail groove 7 is arranged on the rotary sheet 5, a pull rod 8 is arranged on the turntable 9, the lower end of the pull rod 8 extends into the sheet groove 34, a lug 36 matched with the dovetail groove 7 is arranged at the lower end of the pull rod 8, a second driving spring 6 is arranged in the sheet groove 34, one end of the second driving spring 6 abuts against the rotary sheet 5, and the other end abuts against the inner wall of the sheet groove 34. The dovetail groove 7 and the convex blocks 36 can limit the moving direction of the rotary piece 5, so as to ensure that the rotary piece cannot deviate in the moving process. Because the valve rod 21 is eccentrically arranged, the rotary plate 5 at the left side of the rotary plate 9 is extruded and contracted into the plate groove 34, the second driving spring 6 is compressed, the thrust of the medium flowing back at the outlet is larger than that of the medium flowing back at the outlet at the position of the right plate clamp and the rotary plate, therefore, the rotary plate 9 drives the moving plate clamp 33 and the rotary plate 5 to rotate anticlockwise, the moving plate clamp 33 and the rotary plate 5 drive the medium flowing back to rotate anticlockwise, the medium flows in from the right side and flows out from the left side, the medium flowing out from the left side offsets against the medium flowing back at the outlet, the impact force of the medium flowing back is reduced, the pressure of the medium flowing back is relieved, the water hammer is eliminated, and the impact damage of the medium flowing back to the valve is reduced.
As shown in fig. 1-3, the driving mechanism comprises a driving rod and a driving sleeve 11, the driving sleeve 11 is sleeved on the valve rod 21, a positioning block 10 for positioning and fixing the rotary disc 9 is arranged on the driving sleeve 11, the rotary disc 9 is arranged at the lower end of the driving sleeve 11, a driving cavity 27 is arranged between a drainage cavity 28 and a middle cavity 22, the driving rod comprises a driving head 26 and a rack 23, the driving head 26 is movably arranged in the driving cavity 27, the surface of the driving sleeve 11 is meshed with the rack 23, a cap 24 is arranged in the valve body 1, and a first driving spring 25 is arranged between the driving head 26 and the cap 24. Further, a cylinder sleeve 12 is arranged in the valve body 1, the cylinder sleeve 12 and a valve cover 15 form a control cavity 35, the upper side of the driving sleeve 11 extends into the control cavity 35, a control plate 14 is arranged at the upper end of the driving sleeve 11, the control plate 14 is movably arranged in the control cavity 35, and a reset spring 13 is arranged between the control plate 14 and the lower end of the cylinder sleeve 12.
When the stop valve is closed, when the sealing surface of the valve clack 4 presses the sealing surface of the valve seat 3, the medium in the inlet cavity 2 cannot enter the outlet cavity 30, at this time, if the medium in the outlet cavity 30 flows back, and when water hammer is caused, the medium in the outlet cavity 30 enters the drainage cavity 28 through the drainage hole, the driving rod is pushed to move left, the rack 23 drives the driving sleeve 11 to rotate, the driving sleeve 11 moves downwards while rotating due to the fact that the threaded connection is formed between the outer edge of the control plate 14 and the inner wall of the cylinder sleeve 12, after the driving head 26 moves left to compress the first driving spring 25 to a certain extent, the rack 23 does not drive the driving sleeve 11 to rotate, the driving sleeve 11 cannot move downwards any more, and meanwhile, the backflow medium can be decompressed through the turntable 9, and the water hammer is eliminated. When the water hammer disappears, the medium pressure in the driving cavity 27 is reduced, and under the combined action of the first driving spring 25 and the reset spring 13, the driving head 26 and the rack 23 move rightwards to drive the driving sleeve 11 and the control board 14 to rotate reversely, and the driving sleeve 11 drives the turntable 9, the sheet clamp 33 and the rotary sheet 5 to move upwards to the initial position.
In the embodiment, the outlet cavity 30 is provided with an L-shaped drainage tube 29, the drainage tube 29 is communicated with a drainage port, the arrangement of the drainage tube 29 can predict the occurrence of water hammer in advance, and the decompression effect of the water hammer-proof decompression device is further improved.
The examples should not be construed as limiting the invention, and any non-inventive modifications based on the spirit of the invention should be regarded as being within the scope of the invention.
Claims (10)
1. The utility model provides a take runner waterproof hammer stop valve, includes the valve body, the valve body is equipped with inlet chamber and export chamber, inlet chamber and export chamber pass through valve body middle chamber intercommunication, the valve body upper end is equipped with the valve gap, be equipped with the valve rod on the valve gap, the valve rod upper end is connected with the hand wheel, and the lower extreme passes the valve gap extends to valve body middle chamber, the valve rod lower extreme is equipped with the valve clack, be equipped with the disk seat in the valve body, the valve clack has with the isolated first position in inlet chamber and the export chamber of disk seat laminating and breaks away from the second position in intercommunication inlet chamber and export chamber with the disk seat, its characterized in that: the utility model discloses a water hammer is prevented to valve, the well chamber is equipped with the waterproof hammer pressure relief device that is used for preventing the water hammer effect to the valve impact damage when the stop valve is closed, the exit chamber is equipped with drainage mouth and drainage chamber, drainage chamber intercommunication exit chamber and well chamber, waterproof hammer pressure relief device includes carousel, actuating mechanism, the carousel is equipped with a plurality of piece grooves, the activity of piece inslot is provided with the rotor, the valve rod eccentric setting, actuating mechanism can drive the carousel and move down and make exit chamber medium promote the carousel rotation elimination water hammer when the water hammer takes place.
2. The water hammer resistant shutoff valve with runner as claimed in claim 1, wherein: the driving mechanism comprises a driving rod and a driving sleeve, the driving sleeve is sleeved on the valve rod, the rotary disc is arranged at the lower end of the driving sleeve, a driving cavity is arranged between the drainage cavity and the middle cavity, the driving rod comprises a driving head and a rack, the driving head is movably arranged in the driving cavity, and the surface of the driving sleeve is meshed with the rack.
3. A water hammer resistant shut-off valve with wheel according to claim 2, wherein: the valve body is internally provided with a cover cap, and a first driving spring is arranged between the driving head and the cover cap.
4. A water hammer resistant shut-off valve with wheel according to claim 2, wherein: the valve body is internally provided with a cylinder sleeve, the cylinder sleeve and a valve cover form a control cavity, the upper part of the driving sleeve extends into the control cavity, the upper end of the driving sleeve is provided with a control plate, the control plate is movably arranged in the control cavity, and the outer edge of the control plate is in threaded connection with the inner wall of the cylinder sleeve.
5. The water hammer resistant shutoff valve with runner of claim 4, wherein: and a reset spring is arranged between the control plate and the lower end of the cylinder sleeve.
6. A water hammer resistant shut-off valve with wheel according to claim 2, wherein: the driving sleeve is provided with a positioning block for positioning and fixing the turntable.
7. The water hammer resistant shutoff valve with runner as claimed in claim 1, wherein: the rotary plate is provided with a dovetail groove, the rotary plate is provided with a pull rod, the lower end of the pull rod extends into the dovetail groove, and the lower end of the pull rod is provided with a lug matched with the dovetail groove.
8. A water hammer resistant shut-off valve with wheel according to claim 1 or 7, characterized in that: the second driving spring is arranged in the sheet groove, one end of the second driving spring is propped against the rotating sheet, and the other end is propped against the inner wall of the sheet groove.
9. The water hammer resistant shutoff valve with runner as claimed in claim 1, wherein: the outlet cavity is provided with an L-shaped drainage tube which is communicated with the drainage port.
10. The water hammer resistant shutoff valve with runner as claimed in claim 1, wherein: the valve cover is provided with a packing cavity, the valve rod penetrates through the packing cavity to extend into the valve body, and a gland for compressing packing in the packing cavity is arranged above the valve cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310723884.2A CN117028586A (en) | 2023-06-19 | 2023-06-19 | Water hammer stop valve is prevented to area runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310723884.2A CN117028586A (en) | 2023-06-19 | 2023-06-19 | Water hammer stop valve is prevented to area runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117028586A true CN117028586A (en) | 2023-11-10 |
Family
ID=88641815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310723884.2A Pending CN117028586A (en) | 2023-06-19 | 2023-06-19 | Water hammer stop valve is prevented to area runner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117028586A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116538369A (en) * | 2023-05-15 | 2023-08-04 | 江苏大学流体机械温岭研究院 | Waterproof hammer safety device with exhaust function |
-
2023
- 2023-06-19 CN CN202310723884.2A patent/CN117028586A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116538369A (en) * | 2023-05-15 | 2023-08-04 | 江苏大学流体机械温岭研究院 | Waterproof hammer safety device with exhaust function |
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