CN112901837A - Novel liquid pipeline pressure limiting valve - Google Patents
Novel liquid pipeline pressure limiting valve Download PDFInfo
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- CN112901837A CN112901837A CN202110053289.3A CN202110053289A CN112901837A CN 112901837 A CN112901837 A CN 112901837A CN 202110053289 A CN202110053289 A CN 202110053289A CN 112901837 A CN112901837 A CN 112901837A
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- 239000007788 liquid Substances 0.000 title claims abstract description 141
- 230000000670 limiting effect Effects 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000005484 gravity Effects 0.000 claims description 41
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 230000007423 decrease Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 17
- 230000009467 reduction Effects 0.000 abstract description 14
- 238000004080 punching Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
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Abstract
The invention discloses a novel liquid pipeline pressure limiting valve, which comprises a valve body and a pipeline which is vertically arranged, wherein the pipeline comprises an upper pipe section, an adjusting pipe section and a lower pipe section, the novel liquid pipeline pressure limiting valve also comprises a valve core which can be dynamically adjusted in the adjusting pipe section, the cross section of the adjusting pipe section is gradually increased along the direction from the upper pipe section to the lower pipe section, the height position of the valve core in the adjusting pipe section is automatically adjusted according to the flow rate of liquid in the pipeline so as to control the liquid outflow of the pipeline in unit time, and the valve core can block the upper pipe section and the lower pipe section. According to the arrangement, a brand-new mechanical pressure limiting valve design is provided, the valve can dynamically adjust the water yield of liquid in unit time according to the liquid pressure of a liquid outlet pipeline by vertically moving the valve core, the water outlet pressure in the liquid pipeline is indirectly reduced, the water yield of the pipeline is reduced, accurate pressure limiting and dynamic pressure reduction are achieved, safety and reliability are achieved, and the problems that in the prior art, the pressure limiting valve cannot dynamically adjust the liquid outflow speed according to the actual liquid pressure in the pipeline and accurately reduces the pressure are solved.
Description
Technical Field
The invention relates to the technical field of liquid pipeline pressure reduction, in particular to a novel liquid pipeline pressure limiting valve.
Background
In the field of liquid pipeline pressure reduction, in order to ensure that liquid has enough transmission capacity, the transmission distance can be increased by adjusting the liquid pressure in the liquid pipeline, but the excessive liquid pressure can cause resource waste and safety accidents of an output terminal, so that the common practice in the industry is to increase a pressure limiting valve device at a liquid outflow terminal and reduce the maximum liquid pressure of the output end. The traditional pressure limiting valve is designed to reduce the outflow volume of liquid in unit time by mainly adjusting the position of a shifting sheet of the valve, so that the outflow speed of a liquid pipeline is reduced. When the traditional mechanical pressure limiting valve is used, the shifting piece 3 is indirectly driven to rotate through the universal driving shaft 2 by adjusting the adjusting handle 1. As shown in fig. 1, when the plectrum 3 rotates to form an included angle of 90 degrees with the vertical direction of the pipeline, the upper end and the lower end of the plectrum 3 are tightly contacted with the wall of the pipeline, so that the outflow of water flow is cut off; similarly, as shown in fig. 2 and 3, by adjusting the position of the pick-up 3, the water flow can be decelerated and discharged at full speed, so as to reduce the flow rate of the liquid in the pipeline, and thus reduce the pressure of the liquid discharged from the pipeline. However, the biggest disadvantage of this method is that the position of the shifting piece is not changed once adjusted, and the position of the shifting piece cannot be automatically adjusted according to the actual liquid pressure, that is, the valve cannot dynamically adjust the outflow speed or output pressure of the liquid according to the liquid pressure in the pipeline, so as to realize accurate pressure reduction of the liquid outflow in the pipeline. Therefore, how to solve the problem that the pressure limiting valve in the prior art cannot dynamically adjust the outflow speed of the liquid according to the actual liquid pressure in the liquid pipeline to realize accurate pressure reduction becomes an important technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a novel liquid pipeline pressure limiting valve to solve the problem that in the prior art, the pressure limiting valve cannot dynamically adjust the outflow speed of liquid according to the actual liquid pressure in a liquid pipeline to realize accurate pressure reduction.
The purpose of the invention is realized by the following technical scheme:
the invention provides a novel liquid pipeline pressure limiting valve, which comprises a valve body and a pipeline vertically arranged in the valve body, wherein the pipeline comprises an upper pipe section, a lower pipe section positioned below the upper pipe section and an adjusting pipe section arranged between the upper pipe section and the lower pipe section, and the cross section of the adjusting pipe section is gradually increased along the direction from the upper pipe section to the lower pipe section; the liquid flow rate adjusting device comprises an adjusting pipe section and a valve core arranged in the adjusting pipe section in a lifting mode, wherein the valve core is arranged in the adjusting pipe section in the lifting mode, the height position of the valve core in the adjusting pipe section is adjusted according to the liquid flow rate in the pipeline so as to control the liquid outflow quantity of the pipeline in unit time, the valve core can block a lower port of an upper pipe section and an upper port of a lower pipe section, when the valve core blocks the lower port of the upper pipe section, the valve core is located at an upper stop position, and when the valve core blocks the upper port of the lower pipe section, the valve core is located at a lower stop position.
Preferably, the upper pipe section is a water inlet end, the lower pipe section is a water outlet end, the valve core is a buoyancy member capable of floating upwards under the buoyancy action of liquid, and when the flow rate of the liquid in the pipeline is zero, the buoyancy member is located at the upper stop position; when the flow rate of the liquid in the pipeline is the preset flow rate of the pipeline, the buoyancy piece is located at the speed-limiting balance position; when the flow rate of the liquid in the pipeline is larger than zero and smaller than the preset flow rate of the pipeline, the buoyancy piece is positioned between the upper cut-off position and the speed-limiting balance position; when the flow rate of the liquid in the pipeline is larger than the preset flow rate of the pipeline, the buoyancy piece is positioned between the speed-limiting balance position and the lower stop position.
Preferably, the upper pipe section is a water outlet end, the lower pipe section is a water inlet end, the valve core is a gravity piece capable of sinking in liquid, and when the flow rate of the liquid in the pipeline is zero, the gravity piece is located at the lower stop position; when the flow rate of the liquid in the pipeline is the preset flow rate of the pipeline, the gravity piece is positioned at the speed-limiting balance position; when the flow rate of the liquid in the pipeline is larger than zero and smaller than the preset flow rate of the pipeline, the gravity piece is positioned between the lower cut-off position and the speed-limiting balance position; when the flow rate of the liquid in the pipeline is greater than the preset flow rate of the pipeline, the gravity piece is positioned between the speed-limiting balance position and the upper stop position.
Preferably, the adjustment pipe section is conical.
Preferably, the valve core is a sphere, and the diameter of the sphere is larger than that of the upper pipe section and larger than that of the lower pipe section.
Preferably, the pipeline connecting device further comprises a connecting pipe section arranged between the adjusting pipe section and the lower pipe section, and the connecting pipe section is detachably connected with the adjusting pipe section.
Preferably, a connecting flange is arranged at the joint of the adjusting pipe section and the connecting pipe section, and a mounting hole for inserting a fastener is formed in the connecting flange.
Preferably, the number of the mounting holes is at least two and is uniformly distributed along the circumferential direction of the connecting flange.
Preferably, the connecting pipe section is tapered, and the cross section of the connecting pipe section gradually decreases in the direction from the upper pipe section to the lower pipe section.
Preferably, the valve further comprises a limiting structure which is arranged in the connecting pipe section and can prevent the valve core from moving downwards continuously.
In the technical scheme provided by the invention, the novel liquid pipeline pressure limiting valve comprises a valve body and a pipeline vertically arranged in the valve body, wherein the pipeline comprises an upper pipe section, a lower pipe section positioned below the upper pipe section and an adjusting pipe section arranged between the upper pipe section and the lower pipe section, and the cross section of the adjusting pipe section is gradually increased along the direction from the upper pipe section to the lower pipe section; the liquid flow rate regulating valve further comprises a valve core arranged in the regulating pipe section in a lifting mode, the height position of the valve core in the regulating pipe section is adjusted according to the liquid flow rate in the pipeline so as to control the liquid outflow amount of the pipeline in unit time, the valve core can block a lower port of an upper pipe section and an upper port of a lower pipe section, when the valve core blocks the lower port of the upper pipe section, the valve core is located at an upper stop position, and when the valve core blocks the upper port of the lower pipe section, the valve core is located at a lower stop position. According to the arrangement, a brand-new mechanical pressure limiting valve design is provided, the valve can be dynamically adjusted in water yield per unit time according to the liquid pressure of a liquid outlet pipeline by vertically moving the valve core, the water outlet pressure in the liquid pipeline is indirectly reduced, the water yield of the pipeline is reduced, accurate pressure limiting and dynamic pressure reduction are achieved, safety and reliability are achieved, and the problem that in the prior art, the pressure limiting valve cannot dynamically adjust the flowing speed of liquid according to the actual liquid pressure in the liquid pipeline, and accurate pressure reduction is achieved is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first schematic diagram of a pressure limiting valve in the prior art;
FIG. 2 is a schematic view illustrating a second operation state of a pressure limiting valve in the prior art;
FIG. 3 is a schematic view showing the operation state of a pressure limiting valve in the prior art;
FIG. 4 is a first schematic view of the internal piping structure of the novel liquid piping pressure limiting valve in the embodiment of the present invention;
FIG. 5 is a schematic view of the valve core in an upper stop position according to an embodiment of the present invention;
FIG. 6 is a schematic view of the valve core in an operating condition at a speed limiting equilibrium position according to an embodiment of the present invention;
FIG. 7 is a schematic view of the valve core in the lower stop position according to an embodiment of the present invention;
FIG. 8 is a schematic view of the valve core in an upper stop position according to another embodiment of the present invention;
FIG. 9 is a schematic view of the valve core in an operating state at a speed limiting balanced position according to another embodiment of the present invention;
FIG. 10 is a schematic view of the valve core in the lower stop position according to another embodiment of the present invention;
fig. 11 is a schematic diagram of an internal pipeline structure of the novel liquid pipeline pressure limiting valve in the embodiment of the invention.
In fig. 1-11:
1-adjusting a handle; 2-a linkage shaft; 3-plectrum; 4-a pipeline; 5-upper pipe section; 6-lower pipe section; 7-adjusting the pipe section; 8-valve core; 9-upper stop position; 10-lower cut-off position; 11-a buoyancy element; 12-speed limit balancing bit; 13-a gravity piece; 14-connecting the pipe sections; 15-a connecting flange; 16-fasteners.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the invention recited in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
It should be noted that, regarding the placement position of the novel liquid pipeline pressure limiting valve shown in fig. 4, the up-down direction in the drawing is the pointed up-down direction and the vertical direction, and the left-right direction is the horizontal direction.
Referring to fig. 4-11, the novel liquid pipeline pressure limiting valve provided in this embodiment includes a valve body and a pipeline 4 vertically disposed in the valve body, that is, the pipeline 4 is installed perpendicular to the horizontal plane. As shown in fig. 4, the pipeline 4 includes an upper pipe section 5, a lower pipe section 6 located below the upper pipe section 5, and an adjusting pipe section 7 disposed between the upper pipe section 5 and the lower pipe section 6, and the cross section of the adjusting pipe section 7 gradually increases along the direction from the upper pipe section 5 to the lower pipe section 6, i.e., from top to bottom; the device also comprises a valve core 8 which is arranged in the adjusting pipe section 7 in a lifting way, the valve core 8 automatically adjusts the height position in the adjusting pipe section 7 according to the liquid flow rate in the pipeline 4 so as to control the liquid outflow of the pipeline 4 in unit time, the valve core 8 can block the lower port of the upper pipe section 5 and the upper port of the lower pipe section 6, when the valve core 8 blocks the lower port of the upper pipe section 5, the valve core 8 is positioned at an upper stop position 9, and when the valve core 8 blocks the upper port of the lower pipe section 6, the valve core 8 is positioned at a lower stop position 10. According to the arrangement, a brand new mechanical pressure limiting valve design is provided, the valve core moves up and down, the position of the valve in the pipeline is dynamically adjusted, the water yield of the valve in a unit time can be dynamically adjusted according to the liquid pressure of the liquid outlet pipeline, the water outlet pressure in the liquid pipeline is indirectly reduced, the water yield of the pipeline is reduced, accurate pressure limiting and dynamic pressure reduction are achieved, safety and reliability are achieved, and the problem that the pressure limiting valve in the prior art cannot dynamically adjust the liquid outflow speed according to the actual liquid pressure in the liquid pipeline, and accurate pressure reduction is achieved is solved.
In one embodiment, the upper pipe section 5 is a water inlet end, the lower pipe section 6 is a water outlet end, that is, the pipe 4 is vertically installed, liquid flows from top to bottom, as shown by an arrow, and the valve core 8 is a buoyancy member 11 capable of floating up under the buoyancy of the liquid. As shown in fig. 5, when the flow rate of the liquid in the pipeline 4 is zero, the buoyancy member 11 floats upwards due to the buoyancy, and finally blocks the lower port of the upper pipe section 5, and at this time, the buoyancy member 11 is located at the upper stop position 9, and no liquid flows out of the lower pipe section 6. As shown in fig. 6, when the liquid flow rate in the pipeline 4 is the preset flow rate of the pipeline, the buoyancy member 11 is located at the speed-limiting balance position 12, that is, the lower pipeline terminal is completely opened, after the liquid flow rate reaches the maximum flow rate set by the valve pipeline design, that is, the preset flow rate of the pipeline, the buoyancy member 11 stays at the speed-limiting balance position 12, and at this time, the impact force F exerted on the buoyancy member 11 isPunching machineEqual to the buoyancy F1 of the buoyancy member 11 in the liquid. The buoyancy F1 of the buoyant member in the liquid referred to herein is the buoyancy F of the buoyant memberFloating bodyThe gravity G is subtracted. When the flow rate of the liquid in the pipeline 4 is larger than zero and smaller than the preset flow rate of the pipeline, the buoyancy element 11 is positioned between the upper stop position 9 and the speed-limiting balance position 12, namely the lower end pipeline is opened but does not reach the maximum flow rate of the liquid, the liquid starts to flow from top to bottom, the buoyancy element 11 moves between the upper stop position 9 and the speed-limiting balance position 12 due to the impact pressure of the liquid, and at the moment, the instantaneous stop position of the buoyancy element 11 is formed by subtracting the impact force F1 borne by the buoyancy element 11 from the buoyancy F1 borne by the buoyancy element 11 in the liquidPunching machineAnd (6) determining. When the flow rate of the liquid in the pipeline 4 is greater than the preset flow rate of the pipeline, the buoyancy element 11 is positioned between the speed-limiting balance position 12 and the lower stop position 10, namely after the pressure of the liquid in the pipeline is greater than the maximum pressure borne by the design of the valve pipeline, the buoyancy element 11 is subjected to the self-up-down impact force F of the liquidPunching machineThe buoyancy element 11 is downwards moved from the speed-limiting balance position 12 when the buoyancy element is enlargedThe cut-off position 10 moves, the buoyancy member 11 approaches the lower cut-off end of the pipeline, the diameter of the pipeline through which the liquid flows out from the lower end port of the pipeline of the valve is reduced, therefore, the liquid outflow quantity in unit time is reduced, and the impact force F of the liquid on the buoyancy member 11Punching machineThe buoyancy force F1 of the buoyancy element 11 in the liquid is constant, at the moment, the buoyancy element 11 will move back to the speed-limiting balance position 12 until the buoyancy force F1 and the impact force F borne by the buoyancy element 11 are constantPunching machineDynamic balance is achieved, and therefore the functions of automatic pressure reduction, energy conservation and water reduction are achieved. Furthermore, as shown in fig. 7, when there is no liquid in the pipe 4, the buoyancy member 11 stays at the lower cut-off 10 by gravity.
In other embodiments, the upper pipe section 5 is a water outlet end, the lower pipe section 6 is a water inlet end, that is, the pipe 4 is vertically installed, the liquid flows from bottom to top, as shown by the arrow, and the valve core 8 is a gravity piece 13 capable of sinking in the liquid. As shown in fig. 10, liquid flows in the pipe 4, and when the flow rate of the liquid in the pipe 4 is zero, the gravity piece 13 moves downward due to the action of gravity, and finally blocks the upper port of the lower pipe section 6, at this time, the gravity piece 13 is located at the lower cut-off position 10, and no liquid flows out from the upper end. As shown in fig. 9, when the liquid flow rate in the pipeline 4 is the preset flow rate of the pipeline, the gravity piece 13 is located at the speed-limiting balance position 12, that is, the upper end pipeline terminal is completely opened, after the liquid flow rate reaches the maximum flow rate set by the valve pipeline design, that is, the preset flow rate of the pipeline, the gravity piece 13 stays at the speed-limiting balance position 12, and at this time, the impact force F of the liquid on the gravity piece 13 isPunching machineEqual to the weight F2 of the weight 13. The gravity F2 of the gravity member here is the gravity G of the gravity member minus the buoyancy F applied theretoFloating bodyAnd (4) obtaining the product. When the liquid flow rate in the pipeline 4 is larger than zero and smaller than the preset flow rate of the pipeline, the gravity piece 13 is positioned between the lower stop position 10 and the speed-limiting balance position 12, namely the upper pipeline is opened but the liquid outflow speed does not reach the set maximum liquid flow rate, the liquid starts to flow from bottom to top, the gravity piece 13 moves between the lower stop position 10 and the speed-limiting balance position 12 due to the impact pressure of the liquid, and at the moment, the instantaneous stop position of the gravity piece 13 is influenced by the liquid impact force F borne by the gravity piece 13Punching machineMinus the weight F2 of the weight member 13. When the flow rate of the liquid in the pipeline 4 is greater than the preset flow rate of the pipeline, the weight is higherThe force element 13 is positioned between the speed-limiting balance position 12 and the upper stop position 9, namely, after the pressure of the liquid in the pipeline is greater than the maximum pressure born by the design of the valve, the gravity element 13 bears the impact force F of the liquid from bottom to topPunching machineWhen the gravity piece 13 moves from the speed-limiting balance position 12 to the stop position 9, the gravity piece 13 approaches the upper stop end of the pipeline opening, the diameter of the liquid outflow pipeline at the upper end port of the valve pipeline is reduced, the liquid outflow quantity in unit time is reduced, and the impact force F borne by the gravity piece 13 is reducedPunching machineThe gravity F2 of the gravity element 13 is constant, and the gravity element 13 will move back to the speed-limiting balance position 12 until the gravity F2 and the impact F of the gravity element 13Punching machineDynamic balance is achieved, and therefore the function of automatic pressure reduction of the liquid outflow port is achieved. Furthermore, as shown in fig. 10, when there is no liquid in the pipe 4, the gravity member 13 will stay at the lower stop position 10 by gravity. It should be noted that the structural design of the mechanical pressure limiting valve device provided in this embodiment includes, but is not limited to, the design of the pipe 4, the design of the buoyancy member 11 and the design of the gravity member 13 described in this embodiment.
In the embodiment, the adjusting pipe section 7 is conical, the small end of the adjusting pipe section is arranged above, and the diameter of the upper port is the same as that of the upper pipe section 5; the big end is arranged below and is connected with the lower pipe section 6 in a step shape, and the diameter of the lower port is the same as that of the lower pipe section 6, so that the processing and the manufacturing are convenient. In addition, the parameters of the diameter, the length and the like of each pipe section are determined according to the actual design requirements.
As an alternative embodiment, the valve core 8 is a sphere, the diameter of the sphere is larger than that of the upper pipe section 5 and larger than that of the lower pipe section 6, so as to be capable of plugging the upper pipe section and the lower pipe section, and the spherical valve core can be processed into a buoyancy ball or a gravity ball according to design requirements, so that the spherical valve core is convenient to manufacture and use. In addition, the size relationship between the pipeline 4 and the valve core 8 and the like are determined by the design requirements of the pressure limiting valve so as to meet the corresponding pressure reduction requirement.
In a preferred scheme of the embodiment, the novel liquid pipeline pressure limiting valve further comprises a connecting pipe section 14 arranged between the adjusting pipe section 7 and the lower pipe section 6, and the connecting pipe section 14 is detachably connected with the adjusting pipe section 7. The section abrupt change design of the pipeline section junction is gradually-changed transitional connection, the layout is more reasonable, and the valve core is convenient to install. It should be noted that the sealing process is done at the joints of the pipe sections.
As shown in fig. 11, a connecting flange 15 is provided at the joint of the adjusting pipe section 7 and the connecting pipe section 14, and a mounting hole for inserting a fastener 16 is provided on the connecting flange 15. Through bolted connection, can install fast and dismantle like this, improve assembly efficiency, the later maintenance of being convenient for. Specifically, the mounting holes are at least two and are uniformly distributed along the circumferential direction of the connecting flange 15. Therefore, the connection strength is improved, and the tight connection of all the seam positions is ensured.
In the present exemplary embodiment, the connecting piece 14 is also conical in shape and the cross section of the connecting piece 14 decreases in the direction from the upper tube section 5 to the lower tube section 6, i.e. from top to bottom. The diameter, length and other parameters of the connecting pipe section 14 are determined according to actual design requirements. The connecting pipe section can also play a role equivalent to that of the regulating pipe section, and the functions of regulating flow and automatically reducing pressure are achieved through the valve core at different positions of the connecting pipe section. As shown in fig. 11, the regulating pipe section 7 and the connecting pipe section 14 can form a new pressure regulating pipe, at this time, along the direction from the upper pipe section 5 to the lower pipe section 6, the cross section of the pressure regulating pipe is gradually increased until reaching the maximum pressure limiting position, and the cross section of the pressure regulating pipe is gradually decreased, and similarly, the valve core 8 automatically adjusts the height position in the pressure regulating pipe according to the flow rate of the liquid in the pipe, so as to control the liquid outflow amount of the pipe per unit time. The working principle of the pressure regulating pipe is substantially the same as that described above, wherein the speed limiting balancing position 12 can be designed at the position of the largest cross section.
In addition, the novel liquid pipeline pressure limiting valve also comprises a limiting structure which is arranged in the connecting pipe section 14 and can prevent the valve core 8 from moving downwards continuously. For example, the limiting structure can be a plurality of clamping claws which can clamp the spherical valve core, thereby achieving the limiting effect. Of course, the limiting structure is not limited to this, and may be in other forms, and may be specifically designed according to actual use environment, requirements, and the like. A limiting structure can also be arranged in the adjusting pipe section 7, and the valve core can be prevented from moving upwards continuously. And the specific installation position of the limiting structure is required to be set according to the design requirement of the pressure limiting valve.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The novel liquid pipeline pressure limiting valve is characterized by comprising a valve body and a pipeline (4) vertically arranged in the valve body, wherein the pipeline (4) comprises an upper pipe section (5), a lower pipe section (6) positioned below the upper pipe section (5) and an adjusting pipe section (7) arranged between the upper pipe section (5) and the lower pipe section (6), and the cross section of the adjusting pipe section (7) is gradually increased along the direction from the upper pipe section (5) to the lower pipe section (6); the liquid flow rate adjusting device is characterized by further comprising a valve core (8) arranged in the adjusting pipe section (7) in a lifting mode, the valve core (8) adjusts the height position in the adjusting pipe section (7) according to the liquid flow rate in the pipeline (4) to control the liquid outflow amount of the pipeline (4) in unit time, the valve core (8) can block a lower port of the upper pipe section (5) and an upper port of the lower pipe section (6), when the valve core (8) blocks the lower port of the upper pipe section (5), the valve core (8) is located at an upper cut-off position (9), and when the valve core (8) blocks the upper port of the lower pipe section (6), the valve core (8) is located at a lower cut-off position (10).
2. A novel liquid pipe pressure limiting valve according to claim 1, wherein the upper pipe section (5) is a water inlet end, the lower pipe section (6) is a water outlet end, the valve core (8) is a buoyancy member (11) capable of floating upwards under the buoyancy of liquid, and when the flow rate of the liquid in the pipe (4) is zero, the buoyancy member (11) is located at the upper stop position (9); when the flow rate of the liquid in the pipeline (4) is the preset flow rate of the pipeline, the buoyancy piece (11) is positioned at the speed-limiting balance position (12); when the flow rate of liquid in the pipeline (4) is larger than zero and smaller than the preset flow rate of the pipeline, the buoyancy piece (11) is positioned between the upper cut-off position (9) and the speed-limiting balance position (12); when the flow rate of the liquid in the pipeline (4) is larger than the preset flow rate of the pipeline, the buoyancy piece (11) is positioned between the speed-limiting balance position (12) and the lower stopping position (10).
3. A new type of pressure limiting valve for liquid pipelines according to claim 1, characterized in that the upper pipe section (5) is a water outlet end, the lower pipe section (6) is a water inlet end, the valve core (8) is a gravity member (13) capable of sinking in the liquid, and when the flow rate of the liquid in the pipeline (4) is zero, the gravity member (13) is located at the lower cut-off position (10); when the flow rate of the liquid in the pipeline (4) is the preset flow rate of the pipeline, the gravity piece (13) is positioned at the speed-limiting balance position (12); when the flow rate of the liquid in the pipeline (4) is larger than zero and smaller than the preset flow rate of the pipeline, the gravity piece (13) is positioned between the lower stop position (10) and the speed-limiting balance position (12); when the flow rate of the liquid in the pipeline (4) is larger than the preset flow rate of the pipeline, the gravity piece (13) is positioned between the speed-limiting balance position (12) and the upper stop position (9).
4. A new type of liquid line pressure limiting valve as claimed in claim 1, characterized in that the regulating pipe section (7) is conical.
5. A new type of pressure limiting valve for liquid pipes according to claim 1, characterized in that the valve core (8) is a sphere with a diameter larger than the diameter of the upper pipe section (5) and larger than the diameter of the lower pipe section (6).
6. A new type of pressure limiting valve for liquid pipelines according to claim 1, characterized in that it further comprises a connecting pipe section (14) arranged between the regulating pipe section (7) and the lower pipe section (6), said connecting pipe section (14) being detachably connected to the regulating pipe section (7).
7. A novel liquid pipeline pressure limiting valve as claimed in claim 6, characterized in that the joint of the adjusting pipe section (7) and the connecting pipe section (14) is provided with a connecting flange (15), and the connecting flange (15) is provided with a mounting hole for inserting a fastener (16).
8. A new type of pressure limiting valve for liquid pipes according to claim 7, characterized in that the number of said mounting holes is at least two and is evenly distributed along the circumference of said connecting flange (15).
9. A new type of liquid line pressure limiting valve as claimed in claim 6, characterized in that the connecting pipe section (14) is conical and the cross section of the connecting pipe section (14) decreases in the direction from the upper pipe section (5) to the lower pipe section (6).
10. A novel liquid pipe pressure limiting valve as defined in claim 6, further comprising a limiting structure which is arranged in the connecting pipe section (14) and can prevent the valve core (8) from moving downwards continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110053289.3A CN112901837A (en) | 2021-01-15 | 2021-01-15 | Novel liquid pipeline pressure limiting valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110053289.3A CN112901837A (en) | 2021-01-15 | 2021-01-15 | Novel liquid pipeline pressure limiting valve |
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| CN112901837A true CN112901837A (en) | 2021-06-04 |
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| CN202110053289.3A Pending CN112901837A (en) | 2021-01-15 | 2021-01-15 | Novel liquid pipeline pressure limiting valve |
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| CN (1) | CN112901837A (en) |
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|---|---|---|---|---|
| US3011517A (en) * | 1958-12-05 | 1961-12-05 | Tempera Corp | Check valve |
| US3055391A (en) * | 1959-06-16 | 1962-09-25 | Jenkins Bros | Valve |
| US4825897A (en) * | 1988-05-19 | 1989-05-02 | Shade Stephen A | Flow control valve |
| CN2128682Y (en) * | 1992-07-30 | 1993-03-24 | 顿运河 | Ventilated check valve |
| CN2167246Y (en) * | 1993-05-27 | 1994-06-01 | 韦庆文 | Separation float valve |
| US5318407A (en) * | 1992-09-08 | 1994-06-07 | Foppe Thelen Group, Inc. | Check valve having internal float |
| AU670908B3 (en) * | 1995-11-24 | 1996-08-01 | Ultra Valves Pty Ltd | Valves |
| JP2000291822A (en) * | 1999-04-02 | 2000-10-20 | Mamoru Hirose | Reverse flow preventive device of spherical floating body |
| CN1353590A (en) * | 1999-06-19 | 2002-06-12 | 沃维克股份有限公司 | Suction device attachment with suction channel |
| CN101059181A (en) * | 2007-03-21 | 2007-10-24 | 康平原 | Automatic-diversion closure safety valve |
| CN104015892A (en) * | 2014-06-03 | 2014-09-03 | 中国海洋石油总公司 | Stabilization water chamber and air valve drainage pipe of stabilization water chamber |
| CN109424415A (en) * | 2017-08-29 | 2019-03-05 | 郑州宇通客车股份有限公司 | Throttle valve and engine-cooling system, the vehicle for using the throttle valve |
| CN110259999A (en) * | 2019-07-24 | 2019-09-20 | 清华大学 | Valve and hydraulic system |
-
2021
- 2021-01-15 CN CN202110053289.3A patent/CN112901837A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3011517A (en) * | 1958-12-05 | 1961-12-05 | Tempera Corp | Check valve |
| US3055391A (en) * | 1959-06-16 | 1962-09-25 | Jenkins Bros | Valve |
| US4825897A (en) * | 1988-05-19 | 1989-05-02 | Shade Stephen A | Flow control valve |
| CN2128682Y (en) * | 1992-07-30 | 1993-03-24 | 顿运河 | Ventilated check valve |
| US5318407A (en) * | 1992-09-08 | 1994-06-07 | Foppe Thelen Group, Inc. | Check valve having internal float |
| CN2167246Y (en) * | 1993-05-27 | 1994-06-01 | 韦庆文 | Separation float valve |
| AU670908B3 (en) * | 1995-11-24 | 1996-08-01 | Ultra Valves Pty Ltd | Valves |
| JP2000291822A (en) * | 1999-04-02 | 2000-10-20 | Mamoru Hirose | Reverse flow preventive device of spherical floating body |
| CN1353590A (en) * | 1999-06-19 | 2002-06-12 | 沃维克股份有限公司 | Suction device attachment with suction channel |
| CN101059181A (en) * | 2007-03-21 | 2007-10-24 | 康平原 | Automatic-diversion closure safety valve |
| CN104015892A (en) * | 2014-06-03 | 2014-09-03 | 中国海洋石油总公司 | Stabilization water chamber and air valve drainage pipe of stabilization water chamber |
| CN109424415A (en) * | 2017-08-29 | 2019-03-05 | 郑州宇通客车股份有限公司 | Throttle valve and engine-cooling system, the vehicle for using the throttle valve |
| CN110259999A (en) * | 2019-07-24 | 2019-09-20 | 清华大学 | Valve and hydraulic system |
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Application publication date: 20210604 |
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