CN211901126U - Ultrahigh pressure proportional overflow valve - Google Patents
Ultrahigh pressure proportional overflow valve Download PDFInfo
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- CN211901126U CN211901126U CN201922306537.1U CN201922306537U CN211901126U CN 211901126 U CN211901126 U CN 211901126U CN 201922306537 U CN201922306537 U CN 201922306537U CN 211901126 U CN211901126 U CN 211901126U
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Abstract
The utility model discloses an ultrahigh pressure proportional overflow valve, include: the valve comprises a valve body, a valve seat and an adjusting nut, wherein the valve seat and the adjusting nut are respectively arranged at two ends of the valve body, a valve core and a valve chamber are arranged in the valve body, an oil outlet is arranged on the valve seat, an oil inlet is arranged at one side of the valve body, an adjusting spring, a spring seat and a plunger rod are sequentially arranged between the adjusting nut and the valve core, a plunger hole is arranged at one end of the valve body, the plunger rod penetrates through the plunger hole; the prepressing cavity is communicated with the oil inlet through the oil passing hole, one end of the valve core is arranged in the prepressing cavity, a prepressing spring is arranged in the prepressing cavity, one end of the prepressing spring is connected with one end of the valve core, and the other end of the prepressing spring is connected with the inner wall of the prepressing cavity. The utility model discloses improve current proportion overflow valve inside valve body structure, improve proportion overflow valve case and return and sit the precision, reduce vibration and rigid striking between case and the disk seat simultaneously, prolong the life of proportion overflow valve.
Description
Technical Field
The utility model belongs to the technical field of pressure control, especially relate to a super high pressure proportion overflow valve of well head safety control system.
Background
The proportional overflow valve changes the overflow pressure through the spring force, and changes the compression amount of the spring through adjusting the position of the nut so as to change the overflow pressure.
One end of a valve core of the existing proportional overflow valve is pressure generated by hydraulic oil, the other end of the valve core is mechanical spring force, the valve core is pressed by the mechanical spring force to realize pressure control, the pressure of the hydraulic oil exceeds the pressure of the mechanical spring to be opened and decompressed, a valve core flow passage is closed when the hydraulic oil pressure is equal to the mechanical spring force, but the valve core and a valve seat are not tightly seated, the hydraulic oil still leaks and is decompressed continuously, the valve core can be completely seated after being pressed when the spring force is greater than the hydraulic oil pressure, and the pressure at the moment is lower than the opening pressure before decompression, so that the pressure stability of a system cannot be ensured; meanwhile, the valve core can frequently vibrate and impact between the valve core and the valve seat when the valve core is seated, and the service life of the proportional overflow valve is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at overcoming one of the defect that above-mentioned prior art exists, improve the inside valve body structure of current proportional overflow valve, improve the proportional overflow valve case and return and sit the precision, reduce vibration and rigid striking between case and the disk seat simultaneously, prolong the life of proportional overflow valve, provide an ultrahigh pressure proportional overflow valve, include: the valve comprises a valve seat, a valve body and an adjusting nut, wherein the valve seat is arranged at one end of the valve body, the adjusting nut is arranged at the other end of the valve body, the valve also comprises a valve core and a valve chamber which are arranged in the valve body, an oil outlet is arranged on the valve seat, an oil inlet is arranged at one side of the valve body, an adjusting spring, a spring seat and a plunger rod are sequentially arranged between the adjusting nut and the valve core, a plunger hole is arranged at one end of the valve body, the plunger rod penetrates through the plunger hole and is arranged in the valve chamber, and a pre-pressing; the prepressing cavity is communicated with the oil inlet through an oil passing hole, one end of the valve core is arranged in the prepressing cavity, a prepressing spring is arranged in the prepressing cavity, one end of the prepressing spring is connected with one end of the valve core, and the other end of the prepressing spring is connected with the inner wall of the prepressing cavity.
Further, the valve core is a stepped shaft, the stepped shaft is divided into a first shaft and a second shaft, the first shaft is larger than the second shaft, a cone or a cone frustum is arranged on the second shaft and matched with a switch hole in the valve body, the first shaft is matched with the inner wall of the prepressing cavity in a connected mode, the valve core is arranged on one end of the plunger rod, one end of the valve core is connected with the plunger rod, the other end of the valve core is provided with a valve hole, the inner diameter of the valve hole is smaller than the diameter of the first shaft, and the second shaft penetrates through the valve hole and matched with the switch hole in the valve body.
Further, the disk seat with valve body threaded connection, be provided with the internal thread hole on the valve body, the disk seat surface is provided with the locating hole, the locating hole internal diameter is less than internal thread hole internal diameter, still includes fixed pin 13, be provided with on the fixed pin with internal thread hole complex external screw thread, the afterbody of fixed pin be with locating hole matched with smooth cylinder.
Furthermore, the plunger rod further comprises a sealing ring which is sleeved on the plunger rod and connected with the plunger hole, and a pressing ring of which one end is connected with the sealing ring and the other end is supported on the valve seat.
The utility model changes the flow direction of oil pressure, the oil inlet is at the plunger rod side, the flow direction of hydraulic oil is not directly towards the bottom of the valve core, when the oil pressure force is overpressure, the oil liquid drives the valve core to move to release pressure by pushing the valve plug to overcome the elasticity of the adjusting spring, when the oil pressure force is equal to the elasticity of the adjusting spring, the valve core is pre-seated, the oil pressure force at the upper part of the valve core makes the pressure seal between the valve core and the valve seat, the pressure release can not be continued, the pressure stabilizing pressure is seated, the high precision requirement of the pressure of the valve core is realized, simultaneously, when the pressure release is completed, in the process of the valve core seating, because the pre-pressed spring is added between the valve core and the plunger rod, the valve core can slide in the interior relative to the plunger rod, so that the collision between the valve core and the valve seat is soft before, thereby prolonging the service life of the proportional overflow valve.
Drawings
FIG. 1 is a schematic structural view of an ultra-high pressure proportional overflow valve of the present invention;
FIG. 2 is a schematic structural view of another ultra-high pressure proportional overflow valve of the present invention;
wherein 1, valve seat; 11. an oil outlet; 12. a pin hole; 13. a fixing pin; 2. a valve body; 21. an oil inlet; 3. adjusting the nut; 31. a locking nut; 32. adjusting the spring; 33. a spring seat; 4. a plunger rod; 41. an oil passing hole; 42. a pre-pressing cavity; 43. pre-pressing a spring; 44. a valve plug; 45. a valve core; 5. pressing a ring; 6. a seal ring; 7. sealing ring support
Detailed Description
For a better understanding of the present invention, the following examples are provided to further illustrate the present invention, but the present invention is not limited to the following examples.
As shown in fig. 1 and 2, the ultrahigh-pressure proportional relief valve includes: the valve comprises a valve seat 1, a valve body 2 and an adjusting nut 3, wherein the valve seat is arranged at one end of the valve body, the adjusting nut is arranged at the other end of the valve body, the valve further comprises a valve core 45 and a valve chamber which are arranged in the valve body, an oil outlet 11 is arranged on the valve seat, an oil inlet 21 is arranged at one side of the valve body, an adjusting spring 32, a spring seat 33 and a plunger rod 4 are sequentially arranged between the adjusting nut and the valve core, a plunger hole is arranged at one end of the valve body, the plunger rod penetrates through the plunger hole and is arranged in the valve chamber, and a pre-pressing cavity; the prepressing cavity is communicated with the oil inlet through an oil passing hole 41, one end of the valve core 45 is arranged in the prepressing cavity, a prepressing spring 43 is arranged in the prepressing cavity, one end of the prepressing spring is connected with one end of the valve core, and the other end of the prepressing spring is connected with the inner wall of the prepressing cavity.
The valve core is a stepped shaft, the stepped shaft comprises a first shaft and a second shaft, the first shaft is larger than the second shaft, a cone or a cone frustum is arranged on the second shaft and matched with a switch hole in the valve body, and the first shaft is connected with and matched with the inner wall of the prepressing cavity.
Still including setting up plunger rod 4 is served and is served valve plug 44, and the valve plug is one end open-ended cylindricly, valve plug one end with plunger rod threaded connection, the other end are provided with the valve opening, the valve opening internal diameter is less than the shaft diameter is slightly about the internal diameter of shaft two, shaft two passes the valve opening with switch hole cooperation on the valve body.
The valve seat with valve body threaded connection, be provided with the internal thread hole on the valve body, the disk seat surface is provided with the locating hole, the locating hole internal diameter is less than internal thread hole internal diameter, still includes fixed pin 13, be provided with on the fixed pin with internal thread hole complex external screw thread, the afterbody of fixed pin be with locating hole matched with smooth cylinder, as shown in fig. 2.
The hydraulic oil pressure regulating valve further comprises a sealing ring 6 which is sleeved on the plunger rod and connected with the plunger hole, and a pressing ring 5, one end of which is connected with the sealing ring, the other end of which is supported on the valve seat 1, wherein the sealing ring is pressed tightly in the valve body 2 by the pressing ring 5, the pressing ring is a cylinder with two open ends, and a hole is formed in the pressing ring to allow hydraulic oil to pass through. According to the requirement of sealing performance, a sealing ring support 7 can be additionally arranged between the plunger hole and the sealing ring in the valve body so as to reduce the processing difficulty of the end face of the sealing ring arranged at one side of the plunger hole, as shown in figure 1, and certainly, the sealing ring support 7 does not need to be arranged, as shown in figure 2.
The utility model discloses in, improve the structure of current proportion overflow valve, changed the action mode of case, the case is returned to sitting to the disk seat to the pressure release completion, and the pressure through case upper portion hydraulic oil compresses tightly the case and makes it hug closely the disk seat to solved traditional case and returned the problem of continuing the leakage of fluid when sitting in addition, realized that the case returns the improvement of sitting the precision. The pre-pressing spring between the valve core and the plunger rod changes the collision between the valve core and the valve seat into elastic collision, reduces the impact pressure, lightens the vibration and prolongs the service life of the proportional overflow valve.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (4)
1. An ultrahigh-pressure proportional relief valve, characterized by comprising: the valve comprises a valve seat, a valve body and an adjusting nut, wherein the valve seat is arranged at one end of the valve body, the adjusting nut is arranged at the other end of the valve body, the valve also comprises a valve core and a valve chamber which are arranged in the valve body, an oil outlet is arranged on the valve seat, an oil inlet is arranged at one side of the valve body, an adjusting spring, a spring seat and a plunger rod are sequentially arranged between the adjusting nut and the valve core, a plunger hole is arranged at one end of the valve body, the plunger rod penetrates through the plunger hole and is arranged in the valve chamber, and a pre-pressing; the prepressing cavity is communicated with the oil inlet through an oil passing hole, one end of the valve core is arranged in the prepressing cavity, a prepressing spring is arranged in the prepressing cavity, one end of the prepressing spring is connected with one end of the valve core, and the other end of the prepressing spring is connected with the inner wall of the prepressing cavity.
2. The ultrahigh-pressure proportional overflow valve of claim 1, wherein the valve core is a stepped shaft, the stepped shaft is divided into a first shaft and a second shaft, the first shaft is larger than the second shaft, a cone or a truncated cone is arranged on the second shaft and is matched with the switch hole on the valve body, the first shaft is connected and matched with the inner wall of the pre-pressing cavity, the ultrahigh-pressure proportional overflow valve further comprises a valve plug arranged at one end of the plunger rod, one end of the valve plug is connected with the plunger rod, the other end of the valve plug is provided with a valve hole, the inner diameter of the valve hole is smaller than that of the first shaft, and the second shaft penetrates through the valve hole and is matched.
3. The ultrahigh-pressure proportional overflow valve of claim 1, wherein the valve seat is in threaded connection with the valve body, the valve body is provided with an internal threaded hole, the surface of the valve seat is provided with a positioning hole, the internal diameter of the positioning hole is smaller than the internal diameter of the internal threaded hole, the ultrahigh-pressure proportional overflow valve further comprises a fixing pin, the fixing pin is provided with an external thread matched with the internal threaded hole, and the tail part of the fixing pin is a smooth cylinder matched with the positioning hole.
4. The ultrahigh-pressure proportional overflow valve of claim 3, further comprising a sealing ring sleeved on the plunger rod and connected with the plunger hole, and further comprising a pressing ring with one end connected with the sealing ring and the other end supported on the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922306537.1U CN211901126U (en) | 2019-12-20 | 2019-12-20 | Ultrahigh pressure proportional overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922306537.1U CN211901126U (en) | 2019-12-20 | 2019-12-20 | Ultrahigh pressure proportional overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211901126U true CN211901126U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922306537.1U Active CN211901126U (en) | 2019-12-20 | 2019-12-20 | Ultrahigh pressure proportional overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211901126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237273A (en) * | 2019-12-20 | 2020-06-05 | 深圳市弗赛特科技股份有限公司 | Ultrahigh pressure proportional overflow valve |
-
2019
- 2019-12-20 CN CN201922306537.1U patent/CN211901126U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237273A (en) * | 2019-12-20 | 2020-06-05 | 深圳市弗赛特科技股份有限公司 | Ultrahigh pressure proportional overflow valve |
| CN111237273B (en) * | 2019-12-20 | 2024-09-17 | 深圳市弗赛特科技股份有限公司 | Ultrahigh-pressure proportional overflow valve |
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