CN211779048U - Balanced type valve core and three-way control valve - Google Patents
Balanced type valve core and three-way control valve Download PDFInfo
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- CN211779048U CN211779048U CN202020295648.7U CN202020295648U CN211779048U CN 211779048 U CN211779048 U CN 211779048U CN 202020295648 U CN202020295648 U CN 202020295648U CN 211779048 U CN211779048 U CN 211779048U
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Abstract
The utility model discloses a balanced type case and three-way control valve, the case includes the case body, the case body wholly is cylindrical, the case body is sealing part, fluid portion of passing through and flow control portion from top to bottom in proper order, sealing part periphery card is equipped with sealing ring, energy storage sealing washer and backup ring, the sealing ring carries out the sealed of medium, the energy storage sealing washer further seals when balancing the medium power, the backup ring carries out the support of energy storage sealing washer; the outer diameter of the fluid passing part is smaller than that of the flow control part, and the fluid passing part forms a concave fluid groove; flow control portion upper portion periphery is equipped with the disk seat and contradicts the arch, flow control portion lower part periphery is equipped with down the disk seat and contradicts the arch. The utility model discloses the design of energy storage sealing washer reduces the unbalanced force when the case removes, and the case removes more steadily, and control valve's regulation precision is higher.
Description
Technical Field
The utility model relates to a case and control valve especially relate to a balanced type case and tee bend control valve.
Background
The three-way control valve consists of an electric/pneumatic/electro-hydraulic actuating mechanism and a three-way converging (diverging) valve. The device has the advantages of compact structure, light weight, sensitive action and accurate flow characteristic, directly receives control signals (4-20mA DC) and the like input by an adjusting instrument, can control the valve action by adopting a power supply/air source/hydraulic source, realizes the automatic adjustment and control of fluid media of a process pipeline, and is widely applied to accurately controlling process parameters of media such as gas, liquid, steam and the like, such as pressure, flow, temperature, liquid level and the like to be kept at given values. It is suitable for the working condition that one fluid is divided into two paths to flow out through the three-way valve or two fluids are combined into one fluid through the three-way valve.
The three-way control valve has three inlets and outlets connected to pipeline and is equivalent to two single-seat valves combined into one body. The device is divided into a flow-merging valve (two inlets and one outlet) and a flow-dividing valve (one inlet and two outlets) according to the function. When the valve works, one way is fully opened, and the other way is fully closed, so that the stress is similar to that of a single-seat valve when the valve is closed, the unbalanced force is large, and the valve cannot be used under the working conditions of high temperature and high pressure difference.
The process of the nuclear power plant chemical and volume control system discharge pipeline requires that the design temperature is 370 ℃, the design pressure is 25MPa, and the valve is used for distributing the upper flow charging and the auxiliary spraying flow of the pressure stabilizer. When the unit normally operates, the voltage stabilizer assists in spraying and is not put into use, the electric three-way control valve is fully opened to the RCP side, and when the voltage stabilizer assists in spraying and putting into use, the electric three-way control valve assists in spraying flow. The traditional electric three-way control valve has the defects of large unbalanced force, unstable flow control and influence on control precision under high-temperature and high-pressure environments.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a balanced type case and tee bend control valve, unbalanced force when can reducing the case and remove, the case removes more steadily, and control valve's regulation precision is higher.
The technical scheme adopted by the utility model to solve the technical problems is to provide a balanced valve core, which comprises a valve core body, wherein the whole valve core body is cylindrical, the valve core body is sequentially provided with a sealing part, a fluid passing part and a flow control part from top to bottom, and the top of the valve core body is provided with a valve rod hole connected with a valve rod; the periphery of the sealing part is clamped with a sealing ring, an energy storage sealing ring and a supporting ring, the sealing ring is used for sealing a medium, the energy storage sealing ring is used for further sealing while balancing medium force, and the supporting ring is used for supporting the energy storage sealing ring; the outer diameter of the fluid passing part is smaller than that of the flow control part, and the fluid passing part forms a concave fluid groove; flow control portion upper portion periphery is equipped with the disk seat and contradicts the arch, flow control portion lower part periphery is equipped with down the disk seat and contradicts the arch.
Further, the sealing ring includes first sealing ring and second sealing ring, the energy storage sealing washer includes first energy storage sealing washer and second energy storage sealing washer, the backup ring includes first backup ring and second backup ring, first sealing ring, first energy storage sealing washer, first backup ring second energy storage sealing washer and second backup ring from the bottom up set gradually, the second sealing washer cover is established in second backup ring periphery.
Furthermore, first supporting ring cross-section is L shape, the long limit card of first supporting ring L shape is gone into the sealing, first energy storage sealing washer card is established in the recess that first supporting ring lower surface and sealing formed.
Furthermore, the second supporting ring is C-shaped in cross section, a C-shaped groove of the second supporting ring is located on the periphery, the second sealing ring is clamped in the C-shaped groove of the second supporting ring, and the second energy storage sealing ring is clamped in a groove formed by the lower surface of the first supporting ring and the upper surface of the first supporting ring.
Furthermore, the supporting ring is a split ring type supporting ring, and the supporting ring is formed by splicing bilaterally symmetrical semicircular rings.
Furthermore, the energy storage sealing ring is C-shaped, and an energy storage spring is clamped in the energy storage sealing ring.
The utility model adopts another technical proposal to solve the technical problems and provides a three-way control valve which comprises a valve body, a valve cover, a valve rod and a valve core, the valve core is the balanced valve core, the valve body is provided with a left inlet, a lower outlet and a right outlet which are communicated with the valve cavity, a lower valve seat, a throttling sleeve, an upper valve seat and an upper sleeve are sequentially arranged in the valve cavity from bottom to top, the valve rod is connected with the valve core through a valve rod hole at the top of the valve core, the valve rod drives the valve core to move in an inner cavity formed by the throttling sleeve, the upper valve seat and the upper sleeve, the sealing part is positioned above the inner part of the upper sleeve for balancing and sealing fluid, the wall of the throttling sleeve is provided with a throttling hole, the throttling hole is used for communicating the left inlet with the inner cavity, the upper sleeve is provided with a fluid hole, the right outlet is communicated with the fluid groove of the valve core through the fluid hole, and the lower outlet is communicated with the inner cavity.
Further, when the valve core is positioned at the lowest part, the lower valve seat abutting protrusion abuts against the lower valve seat, and the lower outlet is closed; when the valve core is positioned at the top, the upper valve seat props against the bulge to prop against the upper valve seat, and the right outlet is closed.
Further, the valve core is located at the middle position, and the flow control part is located between the upper valve seat and the lower valve seat.
The utility model discloses contrast prior art has following beneficial effect: the design of the energy storage sealing ring reduces the unbalanced force when the valve core moves, the valve core moves more stably, and the adjusting precision of the control valve is higher; the sealing ring seals the medium, so that the medium is prevented from entering and the normal work of the energy storage sealing ring is ensured; the split ring type supporting ring enables the energy storage sealing ring to be more convenient to install and maintain.
Drawings
Fig. 1 is a schematic diagram of a balanced type valve core structure in an embodiment of the present invention;
FIG. 2 is a schematic structural view of the three-way control valve in the embodiment of the present invention when the valve core is located at the lowest position;
FIG. 3 is a schematic structural view of the three-way control valve in the embodiment of the present invention when the valve core is located at the top;
fig. 4 is the three-way control valve in the embodiment of the present invention, when the valve core is located in the middle part.
In the figure:
1, a valve body; 3, a lower valve seat; 4, a throttling sleeve; 6, an upper valve seat; 7, a valve core; 8, an upper sleeve; 11 a valve cover; 12 a valve stem; 13 a first seal ring; 14 a first energy storage sealing ring; 15 a first support ring; 16 second energy storage sealing rings; 17 a second seal ring; 18 a second backup ring; 19 a valve stem bore; 20 abutting the valve seat against the protrusion; 21 the lower valve seat is abutted with the bulge; 22 fluid tank.
Detailed Description
The invention is further described with reference to the following figures and examples.
Fig. 1 is a schematic diagram of a balanced valve core structure in an embodiment of the present invention.
Referring to fig. 1, the balanced type valve element according to the embodiment of the present invention includes a valve element body, the valve element body is integrally cylindrical, the valve element body includes a sealing portion, a fluid passing portion and a flow control portion from top to bottom, and a valve rod hole 19 connected to a valve rod is formed at the top of the valve element body; the periphery of the sealing part is clamped with a sealing ring, an energy storage sealing ring and a supporting ring, the sealing ring is used for sealing a medium, the energy storage sealing ring is used for further sealing while balancing medium force, and the supporting ring is used for supporting the energy storage sealing ring; the outer diameter of the fluid passing part is smaller than that of the flow control part, and the fluid passing part forms a concave fluid groove 22; the periphery of the upper part of the flow control part is provided with an upper valve seat interference bulge 20, and the periphery of the lower part of the flow control part is provided with a lower valve seat interference bulge 21. When the medium has solid particles, the sealing ring can block the particle medium from entering the energy storage sealing ring to prevent the energy storage sealing ring from losing efficacy.
Specifically, the sealing ring of the balanced type valve core of the embodiment of the present invention includes a first sealing ring 13 and a second sealing ring 17, the energy storage sealing ring includes a first energy storage sealing ring 14 and a second energy storage sealing ring 16, the supporting ring includes a first supporting ring 15 and a second supporting ring 18, the first sealing ring 13, the first energy storage sealing ring 14, the first supporting ring 15, the second energy storage sealing ring 16 and the second supporting ring 18 are sequentially arranged from bottom to top, and the second sealing ring 17 is sleeved on the periphery of the second supporting ring; the cross section of the first supporting ring 15 is L-shaped, the long L-shaped edge of the first supporting ring 15 is clamped into the sealing part, and the first energy storage sealing ring 14 is clamped in a groove formed by the lower surface of the first supporting ring 15 and the sealing part; the cross section of the second supporting ring 18 is C-shaped, the C-shaped groove of the second supporting ring 18 is positioned on the periphery, the second sealing ring 17 is clamped in the C-shaped groove of the second supporting ring 18, and the second energy storage sealing ring 16 is clamped in a groove formed by the lower surface of the first supporting ring and the upper surface of the first supporting ring.
Preferably, the utility model discloses balanced type case, backup ring are for opening ring type backup ring, the backup ring is formed by the semicircle ring amalgamation of bilateral symmetry, the installation and the maintenance of the energy storage sealing washer of being convenient for.
Preferably, the utility model discloses balanced type case, energy storage sealing washer are C shape, the card is equipped with the energy storage spring in the energy storage sealing washer. The energy storage spring enables the energy storage sealing ring to have a good balance sealing effect under low pressure, and the higher the medium pressure is, the better the balance sealing effect is.
Referring to fig. 2, 3 and 4, the three-way control valve according to an embodiment of the present invention includes a valve body 1, a valve cover 11, a valve rod 12 and a valve core 7, where the valve core 7 is a balanced valve core, the valve body 1 is provided with a left inlet, a lower outlet and a right outlet which are communicated with a valve cavity, the valve cavity is provided with a lower valve seat 3, a throttling sleeve 4, an upper valve seat 6 and an upper sleeve 8 from bottom to top, the valve rod 12 is connected with the valve core 7 through a valve rod hole 19 at the top of the valve core 7, the valve rod 12 drives the valve core 7 to move in an inner cavity formed by the throttling sleeve 4, the upper valve seat 6 and the upper sleeve 7, the sealing portion is located above the inner portion of the upper sleeve 7 for balancing and sealing fluid, the throttling sleeve 3 is provided with a throttling hole which communicates the left inlet with the inner cavity, the upper sleeve 8 is provided with a fluid hole which communicates the right outlet with a fluid groove 22, the lower outlet is communicated with the inner cavity.
Please continue to refer to fig. 2, in the three-way control valve of the embodiment of the present invention, when the valve core 7 is located at the bottom, the lower valve seat interference protrusion 21 supports the lower valve seat 3, the lower outlet is closed, the fluid enters the valve cavity from the left inlet, and flows out from the right outlet after flowing through the throttling sleeve 4, the fluid groove 22 and the upper sleeve 8.
Referring to fig. 3, in the three-way control valve of the embodiment of the present invention, when the valve core 7 is located at the top, the upper valve seat interference protrusion 20 abuts against the upper valve seat 6 to close the right outlet, and the fluid enters the valve cavity from the left inlet and flows out from the lower outlet after flowing through the throttling sleeve 4.
With continued reference to fig. 4, in the three-way control valve according to the embodiment of the present invention, when the valve core 7 is located at the middle position, the flow control portion is located between the upper valve seat 6 and the lower valve seat 3, and the fluid enters the valve cavity from the left inlet, flows through the throttling sleeve 4, and flows out from the right outlet after passing through the fluid groove 22 and the upper sleeve 8 of the valve core; the other path flows out through a lower outlet below the valve core 7. The opening position of the flow rate control portion of the valve body 7 determines the magnitude of the two outlet flow rates, and the flow rate characteristics depend on the size of the orifice of the throttle sleeve 4.
To sum up, the design of the balanced type valve core and the three-way control valve of the embodiment of the utility model reduces the unbalanced force when the valve core 7 moves, the valve core 7 moves more stably, and the adjusting precision of the control valve is higher; the sealing ring seals the medium, so that the medium is prevented from entering and the normal work of the energy storage sealing ring is ensured; the split ring type supporting ring enables the energy storage sealing ring to be more convenient to install and maintain.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A balanced type valve core is characterized by comprising a valve core body, wherein the valve core body is integrally cylindrical, the valve core body sequentially comprises a sealing part, a fluid passing part and a flow control part from top to bottom, and the top of the valve core body is provided with a valve rod hole connected with a valve rod; the periphery of the sealing part is clamped with a sealing ring, an energy storage sealing ring and a supporting ring, the sealing ring is used for sealing a medium, the energy storage sealing ring is used for further sealing while balancing medium force, and the supporting ring is used for supporting the energy storage sealing ring; the outer diameter of the fluid passing part is smaller than that of the flow control part, and the fluid passing part forms a concave fluid groove; flow control portion upper portion periphery is equipped with the disk seat and contradicts the arch, flow control portion lower part periphery is equipped with down the disk seat and contradicts the arch.
2. The balanced valve cartridge according to claim 1, wherein the sealing ring comprises a first sealing ring and a second sealing ring, the energy storage sealing ring comprises a first energy storage sealing ring and a second energy storage sealing ring, the supporting ring comprises a first supporting ring and a second supporting ring, the first sealing ring, the first energy storage sealing ring, the first supporting ring, the second energy storage sealing ring and the second supporting ring are sequentially arranged from bottom to top, and the second sealing ring is sleeved on the periphery of the second supporting ring.
3. The balanced type valve core according to claim 2, wherein the cross section of the first supporting ring is in an L shape, the L-shaped long side of the first supporting ring is clamped in the sealing part, and the first energy storage sealing ring is clamped in a groove formed by the lower surface of the first supporting ring and the sealing part.
4. The balanced valve cartridge according to claim 2, wherein the second backup ring has a C-shaped cross-section, the C-shaped groove of the second backup ring is located at the outer periphery, the second seal ring is clamped in the C-shaped groove of the second backup ring, and the second energy storage seal ring is clamped in the groove formed by the lower surface of the first backup ring and the upper surface of the first backup ring.
5. The balanced valve cartridge according to claim 1 or 2, wherein the backup ring is a split-ring backup ring, and the backup ring is formed by splicing bilaterally symmetrical semicircular rings.
6. The balanced type valve core according to claim 1 or 2, wherein the energy storage sealing ring is in a C shape, and an energy storage spring is clamped in the energy storage sealing ring.
7. A three-way control valve comprises a valve body, a valve cover, a valve rod and a valve core, and is characterized in that the valve core is the balanced type valve core in any one of claims 1 to 6, the valve body is provided with a left inlet, a lower outlet and a right outlet which are communicated with the valve cavity, the valve cavity is internally provided with a lower valve seat, a throttling sleeve, an upper valve seat and an upper sleeve from bottom to top in sequence, the valve rod is connected with the valve core through a valve rod hole at the top of the valve core, the valve rod drives the valve core to move in an inner cavity formed by the throttling sleeve, the upper valve seat and the upper sleeve, the sealing part is positioned above the inner part of the upper sleeve for balancing and sealing fluid, the wall of the throttling sleeve is provided with a throttling hole, the throttling hole is used for communicating the left inlet with the inner cavity, the upper sleeve is provided with a fluid hole, the right outlet is communicated with the fluid groove of the valve core through the fluid hole, and the lower outlet is communicated with the inner cavity.
8. The three-way control valve according to claim 7, wherein when the valve core is positioned at the lowest position, the lower valve seat interference protrusion abuts against the lower valve seat to close the lower outlet; when the valve core is positioned at the top, the upper valve seat props against the bulge to prop against the upper valve seat, and the right outlet is closed.
9. The three-way control valve of claim 7, wherein the spool is in the neutral position and the flow control portion is between the upper and lower seats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020295648.7U CN211779048U (en) | 2020-03-11 | 2020-03-11 | Balanced type valve core and three-way control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020295648.7U CN211779048U (en) | 2020-03-11 | 2020-03-11 | Balanced type valve core and three-way control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211779048U true CN211779048U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020295648.7U Active CN211779048U (en) | 2020-03-11 | 2020-03-11 | Balanced type valve core and three-way control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211779048U (en) |
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2020
- 2020-03-11 CN CN202020295648.7U patent/CN211779048U/en active Active
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