CN219932985U - Large-caliber quick response emptying valve - Google Patents
Large-caliber quick response emptying valve Download PDFInfo
- Publication number
- CN219932985U CN219932985U CN202321321326.5U CN202321321326U CN219932985U CN 219932985 U CN219932985 U CN 219932985U CN 202321321326 U CN202321321326 U CN 202321321326U CN 219932985 U CN219932985 U CN 219932985U
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- valve
- valve body
- shoulder
- cover plate
- valve core
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- 239000011229 interlayer Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000010030 laminating Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 102220040233 rs79219465 Human genes 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910000816 inconels 718 Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Abstract
The utility model relates to a large-caliber quick response emptying valve, wherein an inlet is arranged at the bottom of a valve body, an outlet is arranged on the side surface of the valve body, the inlet is communicated with the outlet, the top opening of the valve body is connected with an upper cover plate in a sealing way, a signal port is arranged on the upper cover plate, and an upper shoulder and a lower shoulder are arranged in the valve body; the valve body is internally provided with a valve core, the bottom of the valve core is fixedly connected with a lower closing cover through a lower fixing screw, the lower closing cover is attached to a lower shoulder, the upper part of the valve core is sleeved with a sleeve, the sleeve is fixedly connected with a fixing cover, the fixing cover is fixed on an upper shoulder, the bottom of the valve core is respectively sleeved with an upper locking sheet, a lower locking sheet and an interlayer, the valve body and an upper cover plate are separated by the interlayer, the lower locking sheet is clamped on the shoulder of the valve core, and the interlayer, the upper locking sheet and a locking nut are sequentially arranged on the lower locking sheet. The inlet is a flange joint, and the outlet is a smooth welding joint. The utility model has the advantages of high response speed, simple structure and convenient maintenance.
Description
Technical Field
The utility model relates to the technical field of valve bodies, in particular to a large-caliber quick-response emptying valve which is high in response speed, simple in structure and convenient to maintain.
Background
The vent valve is used for discharging pressurized gas or liquid through the vent valve in a non-working state or an emergency state, so that other accidents are avoided. So the name "evacuation valve". The principle is that after the machine is closed, the air inlet valve disc is closed, and the air path of the air vent valve is opened and then is eliminated.
In this application, the high temperature main steam (high pressure/medium pressure/low pressure) is bypassed to the atmosphere and the pressure and temperature rise to a certain point at the start of the heat recovery boiler ignition. Because the control valve is subjected to full differential pressure, the valve and downstream piping can produce high noise and high vibration. Therefore, a flow restriction device such as a diffuser or muffler is typically installed downstream. This is designed to provide a back pressure to the valve to limit pressure drop and subsequent noise and vibration. It may also be used to mitigate noise before exiting the system is introduced into the atmosphere. The control valve noise requirement is typically 85 db. In some cases, insulation may be used to meet noise requirements. However, in many applications, the downstream plumbing valve does not have any insulation. Far field noise requirements depend on the location of the plant but are typically 60 db on the fence line. Another problem is tight shut-off in addition to noise and vibration. Since these valves are typically used during start-up or in the event of a factory trip, they must remain closed during normal operation. If there is a significant leak in the valve, steam is lost. Many times, the lost steam is sufficient to affect turbine performance assurance.
The empirical temperatures for high pressure (1850 psig) and intermediate pressure/hot reheat (600 psig) applications are near 1055F. At these temperatures, valve body materials of C12A or F91 (9% Cr) are required. In addition, at these temperatures, the bolt material of the valve body needs to be studied. As the gas temperature rises above 1050F, the bolt load of steel can be greatly affected. Bolts of steel material may be stretched faster than C12A, resulting in leakage of the valve body and upper bonnet connection. Thus, fisher suggests materials using Inconel 718 alloy at temperatures above 1050F. As temperature increases, tight shut-off becomes a greater challenge. Because of the stability problems of past industry with pilot balanced spools, fischer designed C-seals, utilizing pressure assisted metal seals in conjunction with the internals of metal-to-metal valve seats. This "double" shut-off provides Class V protection at temperatures up to 1100F and a durable shut-off for the high pressure/medium pressure/hot reheat blow-down valve. It should be noted that the application of the intermediate pressure/hot reheat blow down valve may vary depending on the position of the valve in the boiler line. If the valve is placed after the medium pressure superheater (medium pressure blowdown valve), the maximum temperature of the valve tolerance is 850F. If the valve is placed after the reheater (hot reheat dump valve), the maximum temperature of the valve tolerance is 1055F. The pressure of the low pressure vent valve is very low (150 psig) but the temperature can still reach 500F. At this temperature, the fischer adopts a structure of a spring-loaded sealing ring and a polyetheretherketone anti-extrusion ring to ensure that the sealing ring does not extrusion deform. To address noise issues, noise attenuation techniques are recommended rather than limiting valve fluid capacity. The optimization calculation of the system is essential to ensure an optimal solution. In view of this, the valve and muffler need to be combined for calculation. This eliminates restrictions on the flow capacity of the valve, or the possibility of higher than expected noise levels.
A large-caliber quick response emptying valve with high response speed, simple structure and convenient maintenance is needed.
Disclosure of Invention
The utility model aims to provide a large-caliber quick-response emptying valve which is high in response speed, simple in structure and convenient to maintain.
A large caliber quick response blow down valve comprising:
the valve body is provided with an inlet at the bottom and an outlet at the side, the inlet is communicated with the outlet, the top opening of the valve body is connected with an upper cover plate in a sealing way, a signal port is arranged on the upper cover plate, and an upper shoulder and a lower shoulder are arranged in the valve body;
the valve is characterized in that a valve core is arranged in the valve body, the bottom of the valve core is fixedly connected with a lower closing cover through a lower fixing screw, the lower closing cover is attached to a lower shoulder, a sleeve is sleeved on the upper portion of the valve core, the sleeve is fixedly connected with a fixing cover, the fixing cover is fixed on the upper shoulder, an upper locking piece, a lower locking piece and an interlayer are sleeved on the bottom of the valve core respectively, the valve body and an upper cover plate are separated by the interlayer, the lower locking piece is clamped on the shoulder of the valve core, and the interlayer, the upper locking piece and a locking nut are sequentially arranged on the lower locking piece.
The inlet is a flange joint, and the outlet is a smooth welding joint.
The upper cover plate is an upward protruding disc, and the periphery of the upper cover plate is fixedly connected with the valve body through bolts.
The signal port is positioned at the non-center position of the upper cover plate.
The lower closing cover is a circular ring, the inner wall is attached to the valve core, and the outer wall is attached to the lower shoulder.
The upper locking piece and the lower locking piece are different in size and are respectively in a circular ring shape.
The lock nut is connected to the top of the valve core through a threaded fit.
The bottom of the valve body is provided with an inlet, the side surface of the valve body is provided with an outlet, the inlet is communicated with the outlet, the top of the valve body is opened, the valve body is connected with an upper cover plate in a sealing way, a signal port is arranged on the upper cover plate, and an upper shoulder and a lower shoulder are arranged in the valve body; the valve body is internally provided with a valve core, the bottom of the valve core is fixedly connected with a lower closing cover through a lower fixing screw, the lower closing cover is attached to a lower shoulder, the upper part of the valve core is sleeved with a sleeve, the sleeve is fixedly connected with a fixing cover, the fixing cover is fixed on an upper shoulder, the bottom of the valve core is respectively sleeved with an upper locking sheet, a lower locking sheet and an interlayer, the valve body and an upper cover plate are separated by the interlayer, the lower locking sheet is clamped on the shoulder of the valve core, and the interlayer, the upper locking sheet and a locking nut are sequentially arranged on the lower locking sheet. The inlet is a flange joint, and the outlet is a smooth welding joint. The utility model has the advantages of high response speed, simple structure and convenient maintenance.
Drawings
FIG. 1 is a cross-sectional view of the present utility model;
FIG. 2 is a top view of the present utility model;
FIG. 3 is a front view of the present utility model;
FIG. 4 is a right side view of the present utility model;
in the figure: 1. the valve comprises a valve body, 2, an inlet, 3, an outlet, 4, an upper cover plate, 5, a signal port, 6, a valve core, 7, a lower closing cover, 8, a lower fixing screw, 9, a sleeve, 10, a fixing cover, 11, an upper locking piece, 12, a lower locking piece, 13, an interlayer, 14 and a locking nut.
Detailed Description
The utility model is further described below with reference to the drawings and specific examples.
A large caliber quick response blow down valve comprising: the valve body 1, the bottom of the valve body 1 is provided with an inlet 2, the side is provided with an outlet 3, the inlet 2 is communicated with the outlet 3, the top opening of the valve body 1 is connected with an upper cover plate 4 in a sealing way, the upper cover plate 4 is provided with a signal port 5, and an upper shoulder and a lower shoulder are arranged in the valve body 1; the valve body 1 is internally provided with a valve core 6, the bottom of the valve core 6 is fixedly connected with a lower closing cover 7 through a lower fixing screw 8, the lower closing cover 7 is attached to a lower shoulder, the upper part of the valve core 6 is sleeved with a sleeve 9, the sleeve 9 is fixedly connected with a fixing cover 10, the fixing cover 10 is fixed on an upper shoulder, the bottom of the valve core 6 is respectively sleeved with an upper locking piece 11, a lower locking piece 12 and a separation layer 13, the separation layer 13 separates the valve body 1 from an upper cover plate 4, the lower locking piece 12 is clamped on the shoulder of the valve core 6, and the separation layer 13, the upper locking piece 11 and a locking nut 14 are sequentially arranged on the lower locking piece 12.
The inlet 2 is a flange joint, and the outlet 3 is a smooth welded joint. The upper cover plate 4 is an upward convex disc, and the periphery of the upper cover plate is fixedly connected with the valve body 1 through bolts. The signal port 5 is located in a non-central position of the upper cover plate 4. The lower closing cover 7 is a circular ring, the inner wall is attached to the valve core 6, and the outer wall is attached to the lower shoulder. The upper locking piece 11 and the lower locking piece 12 are different in size and are respectively circular. The lock nut 14 is connected to the top of the valve cartridge 6 by a screw-fit.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. A large caliber quick response blow-down valve, comprising:
the valve comprises a valve body (1), wherein an inlet (2) is formed in the bottom of the valve body (1), an outlet (3) is formed in the side face of the valve body, the inlet (2) is communicated with the outlet (3), the top opening of the valve body (1) is connected with an upper cover plate (4) in a sealing mode, a signal port (5) is formed in the upper cover plate (4), and an upper shoulder and a lower shoulder are arranged in the valve body (1);
valve core (6) are set up in valve body (1), close tight lid (7) under the bottom of valve core (6) through lower set screw (8) fixed connection, close tight lid (7) and lower shoulder laminating down, valve core (6) upper portion cover has sleeve pipe (9), sleeve pipe (9) fixed connection fixed cover (10), fixed cover (10) are fixed at last shoulder, the bottom of valve core (6) has last locking piece (11), lower locking piece (12), interlayer (13) respectively, valve body (1) and upper cover plate (4) are separated to interlayer (13), lower locking piece (12) card is on the shoulder of valve core (6), set gradually interlayer (13), last locking piece (11), lock nut (14) down on locking piece (12).
2. A large caliber quick response blow down valve according to claim 1, wherein the inlet (2) is a flanged joint and the outlet (3) is a smooth welded joint.
3. The large-caliber quick response emptying valve according to claim 1, wherein the upper cover plate (4) is an upward-protruding disc, and the periphery of the upper cover plate is fixedly connected with the valve body (1) through bolts.
4. A large caliber quick response blow down valve according to claim 1, wherein the signal port (5) is located in a non-central position of the upper cover plate (4).
5. The large-caliber quick response emptying valve according to claim 1, wherein the lower closing cover (7) is a circular ring, the inner wall is attached to the valve core (6), and the outer wall is attached to the lower shoulder.
6. A large caliber quick response blow-down valve according to claim 1, wherein the upper locking piece (11) and the lower locking piece (12) are different in size and respectively have a circular ring shape.
7. A large caliber quick response blow down valve according to claim 1, wherein the lock nut (14) is connected to the top of the valve core (6) by a threaded fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321321326.5U CN219932985U (en) | 2023-05-29 | 2023-05-29 | Large-caliber quick response emptying valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321321326.5U CN219932985U (en) | 2023-05-29 | 2023-05-29 | Large-caliber quick response emptying valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219932985U true CN219932985U (en) | 2023-10-31 |
Family
ID=88500663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321321326.5U Active CN219932985U (en) | 2023-05-29 | 2023-05-29 | Large-caliber quick response emptying valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219932985U (en) |
-
2023
- 2023-05-29 CN CN202321321326.5U patent/CN219932985U/en active Active
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