CN211501691U - High-temperature high-pressure multi-stage regulating valve - Google Patents
High-temperature high-pressure multi-stage regulating valve Download PDFInfo
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- CN211501691U CN211501691U CN201922336747.5U CN201922336747U CN211501691U CN 211501691 U CN211501691 U CN 211501691U CN 201922336747 U CN201922336747 U CN 201922336747U CN 211501691 U CN211501691 U CN 211501691U
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Abstract
A high-temperature high-pressure multi-stage regulating valve comprises a valve body, a supporting sleeve, a valve cage, a valve core, an upper valve cage pressing plate, a valve cover, packing, a packing gland, a valve rod, a bolt, a nut, a guide sleeve and an adjusting sleeve; a cylindrical support sleeve is arranged in the valve body, an inlet and an outlet of a flow passage of the valve are arranged on the valve body, the inlet is in the horizontal direction, the outlet is vertically downward, a hole is formed in the side wall of the support sleeve and communicated with the inlet, the outlet at the lower part of the cylindrical support sleeve is the outlet of the flow passage which is vertically downward, a coaxial valve cage, an upper valve cage, a valve cage and an upper valve cage are arranged in the support sleeve and are of coaxial cylindrical structures, and orifices which are uniformly distributed are arranged on the side wall of the cylinder between the valve cage and the upper valve cage; the valve core is sleeved in the valve cage and the upper valve cage, and the upper end of the valve core is fixed with the valve rod; the upper end of the valve body is covered by a valve cover, a hole in the vertical direction is formed in the center of the valve cover for installing a valve rod, a packing wrap is arranged on the valve rod side of the top end of the valve cover, and a packing gland is arranged on the upper portion of the packing.
Description
Technical Field
The utility model relates to a governing valve product in high pressure application field extensively is arranged in industrial process automatic control system's such as trades such as electric power, petroleum, chemical industry, metallurgy, environmental protection, light industry and scientific research equipment high pressure difference steam pipe way system at high temperature.
Background
The steam pipeline control system in the fields of power stations, metallurgy, chemical industry, oil fields and the like is widely applied. However, in the high-temperature high-pressure difference steam pipeline, the high pressure cannot be accurately adjusted to the very low pressure. The high-temperature high-pressure difference regulating valve is used for the high-temperature high-pressure difference working condition, and the accuracy of pressure regulation is guaranteed. The traditional product has the following defects: the traditional high-temperature high-pressure difference regulating valve cannot accurately regulate the flow of the high-temperature high-pressure valve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high temperature high pressure multistage regulating valve has multistage valve cage structure to adopt multistage different regulating valve clack structures. Ensuring the regulation of the pressure. In particular to accurately regulate high temperature, high pressure and high pressure difference.
The technical scheme of the utility model is that the high-temperature high-pressure multi-stage regulating valve comprises a valve body, a supporting sleeve, a valve cage, a valve core, an upper valve cage pressing plate, a valve cover, a filler gland, a valve rod, a bolt, a nut, a guide sleeve and an adjusting sleeve; a cylindrical support sleeve is arranged in the valve body, an inlet and an outlet of a flow passage of the valve are arranged on the valve body, the inlet is in the horizontal direction, the outlet is vertically downward, a hole is formed in the side wall of the support sleeve and communicated with the inlet, the outlet at the lower part of the cylindrical support sleeve is the outlet of the flow passage which is vertically downward, a coaxial valve cage, an upper valve cage, a valve cage and an upper valve cage are arranged in the support sleeve and are of coaxial cylindrical structures, and orifices which are uniformly distributed are arranged on the side wall of the cylinder between the valve cage and the upper valve cage; the valve core is sleeved in the valve cage and the upper valve cage, and the upper end of the valve core is fixed with the valve rod; the upper end of the valve body is covered by a valve cover, a hole in the vertical direction is formed in the center of the valve cover for installing a valve rod, a packing wrap is arranged on the valve rod side of the top end of the valve cover, and a packing gland is arranged on the upper portion of the packing.
Furthermore, the valve cage and the upper valve cage are of an integrated cylindrical structure, and the height of the side wall of the cylinder is provided with 3-10 cm size ranges which are provided with uniformly distributed adjusting holes or throttling holes.
The valve core is of a coaxial structure of a cylinder and a circular truncated cone, the circular truncated cone is arranged at the foremost position (lowermost end), a groove is formed between the cylinder and the circular truncated cone, different adjusting structures can be obtained according to different pressures and different flow ranges of the circular truncated cone according to geometric parameters of the circular truncated cone, and the valve core can adopt different designs to obtain multi-stage flow adjustment. The utility model discloses obtain the valve clack (case) structure of the difference that is applicable to different pressure regulations easily, guarantee to reach the flow and the pressure that need through the valve clack regulation of different shapes under high pressure.
The valve has the advantages that the utility model adopts a double-layer structure of the supporting sleeve and the valve cage, a multi-stage adjusting structure which passes through the shape of the valve core of the valve cage and different areas of the hole, and a multi-stage different adjusting valve clack structure; it is suitable for regulating various pressures and flow rates. The valve body, the valve cover, the supporting sleeve and the like are integrally forged, so that the integral strength under high-temperature and high-working conditions is ensured, and the service life of the regulating valve is ensured. The valve core and the valve cage sealing seat adopt different hard alloy surfacing technologies, the valve clack and the sealing seat adopt different hard alloy surfacing technologies, the wear resistance and the corrosion resistance of the valve core and the valve cage sealing seat are guaranteed, and the service life of the whole valve is guaranteed.
By adopting a multi-stage valve cage structure, adjusting holes or throttling holes with quite high distances can be formed, and the adjustable flow range is large. And high pressure resistance is ensured, and the required pressure value is reached after the high pressure passes through the multi-stage valve cage channel. The multi-stage different adjusting valve clack structure is adopted, so that the pressure is adjusted by the valve clacks with different shapes to reach the required pressure.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in the figure, 1 valve body, 2 valve cages, 3 valve cores, 4 upper valve cages, 5 upper valve cage pressing plates, 6 valve covers, 7 packing gaskets, 8 composite lower packing, 9 composite middle packing, 10 packing gland, 11 packing pressing plates, 12 valve stems, 13 bolts, 14 nuts, 15 guide sleeves, 16 second bolts, 17 second nuts, 18 sealing gaskets, 19 second sealing gaskets, 20 support sleeves, 21 third sealing gaskets, 22 fourth sealing gaskets and 23 adjusting sleeves. As shown in the figure, the valve core 3 is lifted or lowered by controlling the valve rod 12, the area of the throttling hole is covered by the valve core in the valve cage 2, the valve core 3 has different parameters, and the shape of the circular table at the lower end of the valve core has different parameters, so that the multi-stage regulation of the flow under high pressure can be realized.
The utility model discloses a high-pressure valve is because being equipped with in the valve body 20 and supporting the cover 15, and the coaxial 2 tube-shape valve cages in the supporting cover 15 and 4 upper valve cages are the valve cages (relevant with the specification of valve, the diameter of the specification of the utility model discloses high-pressure valve is generally applicable to DN200-800) of a length (height) more than 16 centimetres, are equipped with evenly distributed orifice on the section of thick bamboo lateral wall between valve cage and the upper valve cage, and the orifice is a plurality of round holes or rectangular shape round hole, and the diameter of round hole is 4-6 millimeters, rectangular shape round hole (the length 8-12 millimeters of rounded rectangle, wide 4-5 millimeters); when the valve core rises to expose the size of the orifice which is the hole passage for the fluid to pass through, the valve core is used for regulating the flow; the valve core is sleeved in the valve cage and the upper valve cage, and the upper end of the valve core is fixed with the valve rod; the upper end of the valve body is covered by a valve cover, a vertical hole is formed in the center of the valve cover for installing a valve rod, the upper end of the upper valve cage is provided with a guide sleeve, the valve rod is wrapped by the vertically installed guide sleeve, a packing unit is arranged on the valve rod side of the top end of the valve cover and comprises a 7 packing cushion, 8 composite lower packing and 9 composite middle packing, and then 10 packing gland and 11 packing press plates are used for fixing the packing. In addition, the uppermost end of the 12-stem is fitted with a hand wheel. 15 the inner wall of the guide sleeve is provided with an internal thread, the guide rod is provided with an external thread matched with the internal thread at the position, and a hand wheel is rotated (an electric driving device can also be adopted)
The valve core is a coaxial structure of a cylinder and a circular truncated cone, the circular truncated cone is arranged at the foremost position (the lowermost end), and the foremost position of the circular truncated cone is in an arc shape and is shown in the figure. A groove is formed between the cylinder and the circular truncated cone, the diameter of the circular truncated cone is smaller than that of the cylinder, the diameter of the cylinder is matched with the inner diameter of the valve cage, and the valve is stopped when the cylinder seals all throttling holes when the valve core descends. The valve core and the valve cage sealing seat adopt different hard alloy surfacing technologies, wear resistance and corrosion resistance of the valve core and the valve cage sealing seat are guaranteed, and the service life of the whole valve is guaranteed.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (3)
1. A high-temperature high-pressure multi-stage regulating valve is characterized by comprising a valve body, a support sleeve, a valve cage, a valve core, an upper valve cage pressing plate, a valve cover, packing, a packing gland, a valve rod, a bolt, a nut, a guide sleeve and an adjusting sleeve; a cylindrical support sleeve is arranged in the valve body, an inlet and an outlet of a flow passage of the valve are arranged on the valve body, the inlet is in the horizontal direction, the outlet is vertically downward, a hole is formed in the side wall of the support sleeve and communicated with the inlet, the outlet at the lower part of the cylindrical support sleeve is the outlet of the flow passage which is vertically downward, a coaxial valve cage, an upper valve cage, a valve cage and an upper valve cage are arranged in the support sleeve and are of coaxial cylindrical structures, and orifices which are uniformly distributed are arranged on the side wall of the cylinder between the valve cage and the upper valve cage; the valve core is sleeved in the valve cage and the upper valve cage, and the upper end of the valve core is fixed with the valve rod; the upper end of the valve body is covered by a valve cover, a hole in the vertical direction is formed in the center of the valve cover for installing a valve rod, a packing wrap is arranged on the valve rod side of the top end of the valve cover, and a packing gland is arranged on the upper portion of the packing.
2. The high temperature and high pressure multi-stage regulating valve according to claim 1, wherein the cage and the upper cage are of an integrated cylindrical structure, and the height of the cylinder side wall is 3-10 cm provided with uniformly distributed regulating holes or throttling holes.
3. The high-temperature high-pressure multi-stage regulating valve according to claim 1, wherein the valve core is a cylindrical and truncated cone coaxial structure, the truncated cone is arranged at the lowest end, and a groove is formed between the cylinder and the truncated cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922336747.5U CN211501691U (en) | 2019-12-24 | 2019-12-24 | High-temperature high-pressure multi-stage regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922336747.5U CN211501691U (en) | 2019-12-24 | 2019-12-24 | High-temperature high-pressure multi-stage regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211501691U true CN211501691U (en) | 2020-09-15 |
Family
ID=72418785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922336747.5U Active CN211501691U (en) | 2019-12-24 | 2019-12-24 | High-temperature high-pressure multi-stage regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211501691U (en) |
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2019
- 2019-12-24 CN CN201922336747.5U patent/CN211501691U/en active Active
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