CN112594242B - Pressure gauge valve - Google Patents
Pressure gauge valve Download PDFInfo
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- CN112594242B CN112594242B CN202011467618.0A CN202011467618A CN112594242B CN 112594242 B CN112594242 B CN 112594242B CN 202011467618 A CN202011467618 A CN 202011467618A CN 112594242 B CN112594242 B CN 112594242B
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- valve
- sleeve
- pressure gauge
- core
- sealing ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
Abstract
The invention relates to pressure detection on a hydraulic operating mechanism, in particular to a pressure gauge valve. A pressure gauge valve, comprising: a valve body, a pressure gauge joint and a valve core assembly; the valve core assembly includes: the sleeve-shaped core body is embedded in the valve cavity in the valve body, and a core body sealing structure is arranged between the sleeve-shaped core body and the valve body; the valve rod is inserted into the central hole of the sleeve-shaped core body in a guiding way and forms a seal with the sleeve-shaped core body; an oil outlet of the valve cavity is arranged on the side surface of the valve cavity on the valve body; the sleeve-shaped core body is provided with a radial through hole, the valve body is provided with a valve cavity oil inlet on the inner end surface of the valve cavity, and the valve cavity oil inlet corresponds to the central hole of the sleeve-shaped core body; the inner end of the valve rod is provided with a jacking end face, a valve core sealing ring is arranged between the jacking end face and the opening edge of the valve cavity oil inlet, and the valve core sealing ring is used for being in sealing fit with the opening edge of the valve cavity oil inlet and the valve rod under the jacking of the jacking end face so as to close the oil passage. The invention can calibrate or replace the pressure gauge without releasing the oil pressure of the hydraulic system to zero gauge pressure.
Description
Technical Field
The invention relates to pressure detection on a hydraulic operating mechanism, in particular to a pressure gauge valve.
Background
The hydraulic operating mechanism is provided with a pressure gauge for visually and conveniently observing the oil pressure of the hydraulic system. Conventional mounting applications for pressure gauges are shown in fig. 1, where a pressure gauge 91 is mounted on a fitting 93 and locked by a lock nut 92. A sealing ring 94 is provided between the pressure gauge 91 and the joint 93. The lower end of the pressure gauge is connected with a high-pressure oil pipe 97. The pressure gauge fitting is secured to mounting plate 95 at the lower end of the fitting by a lock nut 96.
The pressure gauge joint only realizes the installation function of the pressure gauge and the function of communicating a high-pressure oil way. When the pressure gauge needs to be checked or faults occur and needs to be replaced, the circuit breaker needs to be taken out of operation, the oil pressure of the hydraulic system is released to zero gauge pressure for processing, and therefore the circuit breaker cannot be used for checking the pressure gauge during operation.
Disclosure of Invention
The invention aims to provide a pressure gauge valve which can be replaced without releasing the oil pressure of a hydraulic system to zero gauge pressure.
The invention adopts the following technical scheme:
a pressure gauge valve, comprising:
the valve body is provided with a pressure gauge joint and a valve core assembly;
the pressure gauge connector is used for connecting and conducting a pressure gauge;
the valve core assembly is arranged on the oil passage of the pressure gauge joint and is used for closing and opening the oil passage;
the valve core assembly includes:
the sleeve-shaped core body is embedded in the valve cavity in the valve body, and a core body sealing structure is arranged between the sleeve-shaped core body and the valve body and used for preventing oil from passing through between the outer peripheral surface of the sleeve-shaped core body and the inner wall of the valve cavity;
the valve rod is inserted into the central hole of the sleeve-shaped core body in a guiding way and forms a seal with the sleeve-shaped core body;
the valve body is provided with a valve cavity oil outlet on the side surface of the valve cavity, and the valve cavity oil outlet is communicated with the pressure gauge joint;
the sleeve-shaped core body is provided with a radial through hole, and two ends of the radial through hole are respectively communicated with the central hole of the sleeve-shaped core body and the oil outlet of the valve cavity;
the valve body is provided with a valve cavity oil inlet on the inner end surface of the valve cavity, and the valve cavity oil inlet corresponds to the central hole of the sleeve-shaped core body;
the inner end of the valve rod is provided with a jacking end face, a valve core sealing ring is arranged between the jacking end face and the opening edge of the valve cavity oil inlet, and the valve core sealing ring is used for being in sealing fit with the opening edge of the valve cavity oil inlet and the valve rod under the jacking of the jacking end face so as to close the oil passage.
The beneficial effects are that: by adopting the technical scheme, the valve rod is assembled on the sleeve-shaped core body, the sleeve-shaped core body and the valve rod form a seal, the sleeve-shaped core body and the valve body can be sealed through the core body sealing structure, and when the valve rod of the valve core assembly moves, the valve core sealing ring can be propped or loosened through the propping end face, so that the valve cavity oil inlet is opened and closed; when the valve cavity oil inlet is opened, oil can be communicated with the valve cavity oil outlet through the radial through hole and then communicated with the pressure gauge, so that oil pressure transmission is realized, when the valve cavity oil inlet is closed, an oil communication path between the valve cavity oil outlet and the valve cavity oil inlet is closed, even if the pressure gauge is disassembled, pressure leakage can not occur, and therefore the pressure gauge can be replaced without releasing the oil pressure of the hydraulic system to zero gauge pressure, and the operation is convenient.
As a preferred technical scheme: the spool assembly further includes:
the core pressing sleeve is propped against the outer end of the sleeve-shaped core body, and the valve rod simultaneously passes through the core pressing sleeve and the sleeve-shaped core body;
the valve core pressing cap is fixed on the valve body and used for pressing and fixing the sleeve-shaped core body and the core pressing sleeve into the valve cavity;
an inner sealing ring groove and an outer sealing ring groove are formed between the core pressing sleeve and the sleeve-shaped core; a valve rod sealing ring is arranged in the inner sealing ring groove and used for forming sealing with the valve rod; and a core sealing ring is arranged in the outer sealing ring groove to form the core sealing structure.
The beneficial effects are that: by adopting the technical scheme, the core pressing sleeve is convenient to form sealing with the valve body and the valve rod, and the valve is simple in structure and convenient to assemble.
As a preferred technical scheme: two stages of steps are arranged on the outer peripheral surface of the outer end of the sleeve-shaped core body, and a first stage and a second stage with diameters sequentially increased are formed; the inner end of the core pressing sleeve is correspondingly provided with two stages of concave stations, so that a first concave station section and a second concave station section with the inner diameters sequentially increased are formed; the first step section is inserted into the first concave table section, and the second step section is inserted into the second concave table section;
the inner sealing ring groove is formed by the end face of the first stage and the first concave stage, and the outer sealing ring groove is formed by the annular end face formed by the second stage and the innermost end face of the core pressing sleeve.
The beneficial effects are that: by adopting the technical scheme, the sealing device is simple in structure, convenient to process and favorable for guaranteeing the sealing performance.
As a preferred technical scheme: the valve core pressing cap is provided with an internal thread, and the valve rod is in threaded connection with the valve core pressing cap so as to conduct guiding movement during rotation.
The beneficial effects are that: by adopting the technical scheme, the valve rod can be accurately controlled.
As a preferred technical scheme: the innermost end of the valve rod is provided with a small-diameter section, the small-diameter section forms a shaft shoulder on the valve rod, and the shaft shoulder forms the jacking end face;
the valve core sealing ring is sleeved on the small-diameter section.
The beneficial effects are that: the technical scheme is beneficial to positioning and assembling of the valve core sealing ring.
As a preferred technical scheme: the axial size of the small-diameter section is larger than that of the valve core sealing ring and is used for being inserted into the valve cavity inlet.
The beneficial effects are that: by adopting the technical scheme, the valve rod can be righted, the valve rod and the valve core sealing ring are better ensured to be centered, the sealing effect between the outer peripheral surface of the small-diameter section and the valve rod is improved, and the high-pressure sealing requirement of the hydraulic operating mechanism is met.
As a preferred technical scheme: the valve body is provided with a meter calibrating connector which is communicated with the oil outlet of the valve cavity and used for being connected with a pressure meter calibrating device.
The beneficial effects are that: by adopting the technical scheme, the pressure gauge calibration can be performed without releasing the oil pressure of the hydraulic system to zero gauge pressure, and the online gauge calibration is realized.
As a preferred technical scheme: the meter calibrating connector is connected with a protective nut in a threaded manner, a central bulge is arranged at the bottom in the protective nut, and an annular interval is formed between the central bulge and the inner wall of the protective nut; the center bulge is used for being inserted into an inner hole of the meter correcting connector, and a nut sealing ring is arranged between the center bulge and the inner hole wall of the meter correcting connector.
The beneficial effects are that: by adopting the technical scheme, impurities can be prevented from entering the oil liquid, and the stability of the system is ensured.
As a preferred technical scheme: the pressure gauge joint is provided with a central through hole, at least two damping sheets and at least one supporting sleeve are arranged in the central through hole, and the damping sheets are sheet bodies provided with damping holes;
the damping sheets and the supporting sleeves are alternately arranged along the axial direction of the central through hole, a compression screw is arranged at the orifice of the central through hole and used for compressing the damping sheets and the supporting sleeves, and a through-flow channel which is penetrated along the axial direction is arranged on the compression screw;
the damping holes on two adjacent damping sheets are staggered along the radial direction and used for buffering the oil pressure.
The beneficial effects are that: by adopting the technical scheme, the hydraulic buffer function can be realized, the damage of the pressure gauge can be avoided, the service life can be prolonged, and the working is reliable.
As a preferred technical scheme: the pressure gauge joint comprises a joint pipe, a connecting nut is connected to the joint pipe in a threaded manner, the connecting nut comprises an upper threaded section and a lower threaded section, the lower threaded section is used for being connected with the joint pipe in a threaded manner, and the upper threaded section is used for being connected with the pressure gauge in a threaded manner; the upper thread section and the lower thread section are threaded in opposite directions.
The beneficial effects are that: by adopting the technical scheme, the reliable fixation of the pressure gauge is guaranteed.
Drawings
FIG. 1 is a schematic view of a prior art pressure gauge connection structure;
FIG. 2 is a schematic diagram of the structure of example 1 of a pressure gauge valve according to the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a schematic diagram showing the arrangement of damping holes of a damping fin;
fig. 5 is a schematic view of the pressure gauge valve of fig. 1 in use.
The names of the corresponding components in the figures are: 10. a valve body; 20. a pressure gauge joint; 21. a joint pipe; 22. a coupling nut; 23. a damping sheet; 24. a damping hole; 25. a support sleeve; 26. a compression screw; 27. a locknut; 28. a valve body fixing nut; 29. a mounting plate; 30. a valve core assembly; 31. a sleeve-shaped core; 32. core pressing sleeve; 33. the valve core presses the cap; 34. a valve stem; 35. a hand wheel; 36. a first stage; 37. a second stage; 38. a first land section; 39. a second land section; 310. a valve stem seal ring; 311. a core seal ring; 312. an oil outlet of the valve cavity; 313. a radial through hole; 314. a circumferential ring groove; 315. an oil inlet of the valve cavity; 316. a small diameter section; 317. a valve core sealing ring; 41. calibrating the meter connector; 42. an inclined channel; 43. a protective nut; 44. a central boss; 45. a nut sealing ring; 51. a pressure gauge; 52. a high pressure oil pipe; 53. calibrating a meter pipeline.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It is noted that relational terms such as first and second, and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises a depicted element.
In the description of the present invention, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
In the description of the present invention, unless explicitly stated and limited otherwise, the term "provided" as may occur, for example, as an object of "provided" may be a part of a body, may be separately arranged from the body, and may be connected to the body, and may be detachably connected or may be non-detachably connected. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
The present invention is described in further detail below with reference to examples.
Example 1 of a pressure gauge valve in the present invention:
the pressure gauge valve is used for installing the pressure gauge 51 in a hydraulic operating mechanism of the high-voltage circuit breaker, and can also be used for checking the pressure gauge 51 or replacing the fault pressure gauge 51 in other hydraulic products under the condition of not interrupting the product work.
The structure of the pressure gauge valve is shown in fig. 2 and 3, and comprises a valve body 10, a pressure gauge joint 20, a valve core assembly 30 and a gauge calibrating joint 41. The valve body 10 is of an inverted T-shaped structure as a whole, the upper end of the valve body 10 is provided with the pressure gauge connector 20 for connecting and conducting the pressure gauge 51, the lower end is provided with a high-pressure pipe connector for connecting a high-pressure oil pipe 52, the right end is provided with the valve core assembly 30 for assembling and realizing the opening and closing of a valve, and the left end is provided with the gauge calibrating connector 41 for connecting a gauge calibrating pipeline 53. When in use, oil enters the pressure gauge valve from the high-pressure oil pipe 52, is connected to the pressure gauge joint 20 through the oil path, and then enters the pressure gauge 51, so that oil pressure transmission is realized.
The valve core assembly 30 is disposed on the oil path of the pressure gauge joint 20 for closing and opening the oil path. The valve cartridge assembly 30 includes a sleeve-like core 31, a core press sleeve 32, a valve cartridge press cap 33, and a valve stem 34. The sleeve-shaped core body 31 and the core pressing sleeve 32 are sequentially embedded in a valve cavity in the valve body 10, and the core pressing sleeve 32 is propped against the outer end of the sleeve-shaped core body 31; a spool press cap 33 is screwed onto the valve body 10 for press-fixing the sleeve-like spool 31 and the spool press 32 into the valve chamber. The valve rod 34 passes through the core pressing sleeve 32, the sleeve-shaped core 31 and the valve core pressing cap 33 at the same time, the valve core pressing cap 33 is provided with internal threads, one end of the valve rod 34, which is close to the outside of the valve body 10, is connected with the valve core pressing cap 33 through threads so as to conduct guiding movement during rotation, and the inner end of the valve rod 34 is inserted into the central hole of the sleeve-shaped core 31 in a guiding way. The outer end of the valve rod 34 is provided with a hand wheel 35 for driving the valve rod 34 to rotate.
The outer peripheral surface of the outer end of the sleeve-shaped core body 31 is provided with two steps to form a first stage 36 and a second stage 37 with diameters sequentially increased; the inner end of the core pressing sleeve 32 is correspondingly provided with two stages of concave stations, and a first concave station section 38 and a second concave station section 39 with sequentially increased inner diameters are formed; the first stage 36 is inserted into a first recess stage 38 and the second stage 37 is inserted into a second recess stage 39. The end face of the first stage 36 and the first land 38 enclose an inner sealing ring groove in which a stem seal 310 is disposed for sealing with the stem 34. The annular end surface formed in the second stage 37 and the innermost end surface of the core pressing sleeve 32 form an outer sealing ring groove, and a core sealing ring 311 is arranged in the outer sealing ring groove to form a core sealing structure for preventing oil from passing between the outer peripheral surface of the sleeve-shaped core 31 and the inner wall of the valve cavity. Through the sleeve-shaped core body 31 and the core body pressing sleeve 32 with two step structures, two sealing ring grooves can be formed, the structure is simple and compact, and after corresponding sealing rings are installed, the sealing between the sleeve-shaped core body 31 and the valve body 10, and the sealing between the valve rod 34 and the sleeve-shaped core body 31 and the core body pressing sleeve 32 can be ensured.
A valve cavity oil outlet 312 is arranged on the side surface of the valve cavity on the valve body 10, and the valve cavity oil outlet 312 is communicated with the pressure gauge joint 20; the sleeve-shaped core body 31 is provided with a radial through hole 313 and a circumferential annular groove 314, the circumferential annular groove 314 corresponds to the radial through hole 313, and two ends of the radial through hole 313 are respectively communicated with the central hole of the sleeve-shaped core body 31 and the valve cavity oil outlet 312. The valve body 10 is provided with a valve cavity oil inlet 315 on the inner end surface of the valve cavity, and the valve cavity oil inlet 315 corresponds to the central hole of the sleeve-shaped core 31. The innermost end of the valve rod 34 is provided with a small-diameter section 316, the small-diameter section 316 is sleeved with a valve core sealing ring 317, meanwhile, the small-diameter section 316 forms a shaft shoulder on the valve rod 34, the shaft shoulder forms a jacking end face, and the valve core sealing ring 317 is used for being in sealing fit with the opening edge of the valve cavity oil inlet 315 and the valve rod 34 under the jacking pressure of the jacking end face so as to close the oil passage. When the valve rod 34 releases the valve plug seal 317, oil passes between the valve plug seal 317 and the valve rod 34 to transmit oil pressure, and no flow is required. The axial dimension of the small-diameter section 316 is larger than that of the valve core sealing ring 317, and the small-diameter section 316 is used for being inserted into the valve cavity inlet, so that the valve rod 34 can be righted, the valve rod 34 and the valve core sealing ring 317 are better ensured to be centered, the sealing effect between the outer peripheral surface of the small-diameter section 316 and the valve rod 34 is improved, and the high-pressure sealing requirement of the hydraulic operating mechanism is met. The center of the inner end surface of the sleeve-shaped core body 31 is provided with a sealing ring accommodating groove for the valve core sealing ring 317 to be placed in, so that stable positioning of the valve core sealing ring 317 is guaranteed, and reliability is improved.
The pressure gauge joint 20 comprises a joint pipe 21, a connecting nut 22 is connected to the joint pipe 21 in a threaded manner, the connecting nut 22 comprises an upper threaded section and a lower threaded section, the lower threaded section is used for being connected with the joint pipe 21 in a threaded manner, and the upper threaded section is used for being connected with the pressure gauge 51 in a threaded manner; the upper thread section and the lower thread section are threaded in opposite directions. The pressure gauge joint 20 further comprises a locknut 27, the locknut 27 being adapted to be fitted onto the pressure gauge 51, to fit the top end face of the coupling nut 22. The joint pipe 21 is provided with a valve body fixing nut 28, and the valve body fixing nut 28 is used for clamping a mounting plate 29 together with the connecting nut 22. The joint tube 21 forms a central through hole on the pressure gauge joint 20, a plurality of damping sheets 23 and a plurality of supporting sleeves 25 are arranged in the central through hole, as shown in fig. 4, the damping sheets 23 are sheet bodies provided with damping holes 24, and the damping sheets 23 and the supporting sleeves 25 are alternately arranged along the axial direction of the central through hole. The hole opening of the central through hole is provided with a compression screw 26 for compressing the damping fin 23 and the supporting sleeve 25, and the compression screw 26 is provided with a through flow passage which is penetrated along the axial direction. The damping holes 24 on two adjacent damping sheets 23 are staggered along the radial direction and used for buffering the oil pressure.
As shown in fig. 2, the two axial ends of the gauge joint 41 are provided with external threads, one end of which is connected to the valve body 10, and the other end of which is used for being connected with the protecting nut 43 or the gauge calibrating pipe 53 of the pressure gauge calibrating device. An inclined channel 42 is further arranged in the valve body 10, and the inclined channel 42 is connected between the valve cavity oil outlet 312 and the meter calibrating connector 41, so that the meter calibrating connector 41 is communicated with the valve cavity oil outlet 312 and is used for being connected with a pressure meter calibrating device. The bottom of the protection nut is provided with a central bulge 44, and an annular interval is formed between the central bulge 44 and the inner wall of the protection nut 43; the central bulge 44 is used for being inserted into an inner hole of the meter calibrating connector 41, and a nut sealing ring 45 is arranged on the inner hole wall of the meter calibrating connector 41 and is used for being in sealing fit with the central bulge 44 or the meter calibrating connector.
When the gauge is calibrated or the pressure gauge 51 is replaced, the valve rod 34 is rotated through the hand wheel 35, the valve rod 34 moves to the left side in the drawing, the valve core sealing ring 317 forms sealing fit with the opening edge of the valve cavity oil inlet 315 and the valve rod 34 under the pushing pressure of the pushing end face, and therefore the oil passage is closed, and the gauge is calibrated or the pressure gauge 51 is replaced. When the gauge is required to be calibrated, the protecting screw cap 43 on the gauge connector 41 is screwed off, and then the gauge calibrating pipeline 53 of the pressure gauge calibrating device is connected to the external screw thread on the gauge connector 41 in a threaded manner, as shown in fig. 5, the gauge calibrating of the pressure gauge 51 can be performed. After the gauge calibration or the replacement of the pressure gauge 51 is completed, the hand wheel 35 is reversely rotated, the valve core sealing ring 317 is locked on the pressing end surface at the inner end of the valve rod 34, and oil passes through between the valve core sealing ring 317 and the valve rod 34, so that the work of the pressure gauge 51 can be restored.
Example 2 of the pressure gauge valve in the present invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the core seal ring 311 between the sleeve-shaped core 31 and the core pressing sleeve 32 forms a core seal structure, and in this embodiment, a seal ring is provided between the outer peripheral surface of the sleeve-shaped core 31 and the inner wall of the valve cavity of the core, so as to form the core seal structure.
Example 3 of a pressure gauge valve in the present invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the valve stem seal ring 310 between the sleeve-shaped core 31 and the core pressing sleeve 32 achieves sealing of the valve stem 34, and in this embodiment, a seal ring is provided in the center hole of the sleeve-shaped core 31 to achieve sealing of the valve stem 34. Of course, in other embodiments, a seal ring may be provided on the outer peripheral surface of the valve stem 34.
Example 4 of a pressure gauge valve in the present invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the valve core assembly 30 includes a sleeve-shaped core 31, and further includes a core pressing sleeve 32 and a valve core pressing cap 33, while in this embodiment, the valve core assembly 30 is not provided with the core pressing sleeve 32 and the valve core pressing cap 33, the sleeve-shaped core 31 is screwed on the valve body 10, and an internal thread is provided in a central hole of the sleeve-shaped core 31 for the valve rod 34 to be screwed, and a sealing ring is provided between an outer peripheral surface of the valve rod 34 and a hole wall of the sleeve-shaped core 31.
Example 5 of a pressure gauge valve in the present invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the center of the inner end surface of the sleeve-shaped core 31 is provided with a seal ring accommodating groove for the valve core seal ring 317 to be placed, while in this embodiment, the inner end surface of the valve cavity is provided with a seal ring accommodating groove for the valve core seal ring 317 to be placed. In other implementations, the size of the valve core seal 317 may be increased such that the sleeve-shaped core 31 directly compresses the valve core seal 317.
The above description is only a preferred embodiment of the present application, and is not intended to limit the present application, and the patent protection scope of the present application is defined by the claims, and all equivalent structural changes made by the specification and the attached drawings of the present application should be included in the protection scope of the present application.
Claims (8)
1. A pressure gauge valve, comprising:
the valve body (10), there are manometer joints (20) and valve core assemblies (30) on the valve body (10);
the pressure gauge joint (20) is used for connecting and conducting the pressure gauge (51);
the valve core assembly (30) is arranged on the oil passage of the pressure gauge joint (20) and is used for closing and opening the oil passage;
the spool assembly (30) includes:
the sleeve-shaped core body (31) is embedded in the valve cavity in the valve body (10), and a core body sealing structure is arranged between the sleeve-shaped core body and the valve body (10) and used for preventing oil from passing through between the outer peripheral surface of the sleeve-shaped core body (31) and the inner wall of the valve cavity;
the valve rod (34) is inserted into the central hole of the sleeve-shaped core body (31) in a guiding way and forms a seal with the sleeve-shaped core body (31);
an oil outlet (312) of the valve cavity is arranged on the side surface of the valve cavity on the valve body (10), and the oil outlet (312) of the valve cavity is communicated with the pressure gauge joint (20);
the sleeve-shaped core body (31) is provided with a radial through hole (313), and two ends of the radial through hole (313) are respectively communicated with a central hole of the sleeve-shaped core body (31) and the valve cavity oil outlet (312);
a valve cavity oil inlet (315) is formed in the valve body (10) and is arranged on the inner end face of the valve cavity, and the valve cavity oil inlet (315) corresponds to the central hole of the sleeve-shaped core body (31);
a jacking end face is arranged at the inner end of the valve rod (34), a valve core sealing ring (317) is arranged between the jacking end face and the valve cavity oil inlet (315), and the valve core sealing ring (317) is used for being in sealing fit with the valve cavity oil inlet (315) and the valve rod (34) under the jacking of the jacking end face so as to close the oil passage;
the core pressing sleeve (32), the core pressing sleeve (32) is propped against the outer end of the sleeve-shaped core (31), and the valve rod (34) simultaneously passes through the core pressing sleeve (32) and the sleeve-shaped core (31);
a valve core pressing cap (33) fixed on the valve body (10) and used for pressing and fixing the sleeve-shaped core (31) and the core pressing sleeve (32) into the valve cavity;
an inner sealing ring groove and an outer sealing ring groove are formed between the core pressing sleeve (32) and the sleeve-shaped core (31); a valve rod sealing ring (310) is arranged in the inner sealing ring groove and is used for forming a seal with the valve rod (34); a core sealing ring (311) is arranged in the outer sealing ring groove to form the core sealing structure;
the outer peripheral surface of the outer end of the sleeve-shaped core body (31) is provided with two steps to form a first stage (36) and a second stage (37) with diameters sequentially increased; the inner end of the core pressing sleeve (32) is correspondingly provided with two stages of concave stations, and a first concave station section (38) and a second concave station section (39) with sequentially increased inner diameters are formed; the first stage (36) is inserted into a first recess stage (38), and the second stage (37) is inserted into a second recess stage (39);
the inner sealing ring groove is formed by the end face of a first stage (36) and a first concave stage (38), and the outer sealing ring groove is formed by the annular end face formed by a second stage (37) and the innermost end face of the core pressing sleeve (32).
2. The pressure gauge valve according to claim 1, characterized in that the spool press cap (33) is provided with an internal thread, and the valve stem (34) is screwed to the spool press cap (33) to be guided in movement upon rotation.
3. The pressure gauge valve of claim 1, wherein the innermost end of the valve stem (34) is provided with a small diameter section (316), the small diameter section (316) forming a shoulder on the valve stem (34), the shoulder forming the pressing end face;
the valve core sealing ring (317) is sleeved on the small-diameter section (316).
4. A pressure gauge valve according to claim 3, characterized in that the axial dimension of the small diameter section (316) is larger than the axial dimension of the spool sealing ring (317) for insertion into the valve cavity oil inlet.
5. The pressure gauge valve according to claim 1, characterized in that a gauge connector (41) is arranged on the valve body (10), and the gauge connector (41) is communicated with the valve cavity oil outlet (312) and is used for being connected with a pressure gauge checking device.
6. The pressure gauge valve according to claim 5, characterized in that the gauge nipple (41) is screwed with a protective nut (43), a central protrusion (44) is arranged at the bottom in the protective nut (43), and an annular space is formed between the central protrusion (44) and the inner wall of the protective nut (43); the center bulge (44) is used for being inserted into an inner hole of the meter correcting connector (41), and a nut sealing ring (45) is arranged between the center bulge and the inner hole wall of the meter correcting connector (41).
7. The pressure gauge valve according to claim 1, characterized in that the pressure gauge joint (20) has a central through hole, in which at least two damping sheets (23) and at least one supporting sleeve (25) are arranged, the damping sheets (23) being sheet bodies provided with damping holes (24);
the damping sheets (23) and the supporting sleeves (25) are alternately arranged along the axial direction of the central through hole, a compression screw (26) is arranged at the orifice of the central through hole and used for compressing the damping sheets (23) and the supporting sleeves (25), and a through-flow channel which is penetrated along the axial direction is arranged on the compression screw (26);
damping holes (24) on two adjacent damping sheets (23) are staggered along the radial direction and used for buffering oil pressure.
8. The pressure gauge valve according to claim 1, characterized in that the pressure gauge joint (20) comprises a joint pipe (21), a connecting nut (22) is screwed on the joint pipe (21), the connecting nut (22) comprises an upper threaded section and a lower threaded section, the lower threaded section is screwed on the joint pipe (21), and the upper threaded section is screwed on the pressure gauge (51); the upper thread section and the lower thread section are threaded in opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011467618.0A CN112594242B (en) | 2020-12-14 | 2020-12-14 | Pressure gauge valve |
Applications Claiming Priority (1)
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| CN202011467618.0A CN112594242B (en) | 2020-12-14 | 2020-12-14 | Pressure gauge valve |
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| CN112594242B true CN112594242B (en) | 2023-04-28 |
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| CN200958607Y (en) * | 2006-02-06 | 2007-10-10 | 平顶山市天佳仪表有限责任公司 | Sulfur hexafluoride stop valve |
| JP5303303B2 (en) * | 2009-02-13 | 2013-10-02 | アズビル株式会社 | Flow path switch and positioner |
| CN211082954U (en) * | 2019-11-08 | 2020-07-24 | 江苏万兴石油装备有限公司 | Novel high pressure gauge stop valve |
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