Multi-channel fluid pressure stabilizing control valve

Abstract

The invention relates to the field of valves, and discloses a multi-channel fluid pressure stabilizing control valve which comprises a pressure stabilizing valve composed of an upper valve body and a lower valve body, the lower valve body is installed at the bottom of the upper valve body, the lower valve body is provided with an input pipe and a plurality of output pipes, a cavity is formed in the lower valve body, the output pipes are communicated with the cavity, and the multi-channel fluid pressure stabilizing control valve further comprises an energy storage groove formed in the top of the lower valve body; the damping holes are formed in the bottom wall of the energy storage groove, the number of the damping holes is the same as that of the output pipes, and the energy storage groove communicates with the cavity through the damping holes. According to the invention, through a mode of combining mechanical feedback and multi-stage energy storage compensation, high-precision pressure stabilization is realized, a diaphragm senses the pressure change of a cavity in real time, a linkage pressure regulating seat regulates the opening degree of a liquid inlet channel, a passive energy accumulator and an active pre-charging energy accumulator work cooperatively, the pressure is quickly absorbed or supplemented, the fluctuation range of the inlet pressure of other channels can be effectively controlled, and the stability of the system is improved. And the pressure of each channel is stabilized at a set value.

Description

Technical Field

[0001] The present invention relates to the field of valves, and in particular to a multi-channel fluid pressure-stabilizing control valve. Background Art

[0002] Multichannel fluid control valves are used to control parameters such as the direction and flow rate of fluids in multiple pipelines. Their typical structure utilizes a shared inlet chamber design, meaning all channels share a single central fluid inlet, while each channel has its own valve core, drive unit, and outlet flow path. This design significantly improves valve integration and reduces the space and complexity of multichannel fluid control valves.

[0003] After searching, the publication number CN118815945A discloses a multi-channel control valve for fluid transportation, including a main valve core and two groups of confluences located at both ends of the main valve core. The main valve core is used to connect the two groups of confluences, and the fluid flows from one confluence through the main valve core to the other confluence; the confluence includes a connecting plate fixedly connected to the main valve core and a valve box snapped on the connecting plate.

[0004] The total flow rate of the common chamber in the existing valve body is always equal to the sum of the flow rates of all channels. When a channel is quickly closed, causing a sudden drop in flow demand, or when another channel is quickly opened, causing a surge in flow demand, a severe pressure disturbance will instantly occur in the common chamber. This disturbance will be transmitted to the inlets of all channels, causing the inlet pressure of other channels to deviate from the set value. Summary of the Invention

[0005] In order to solve the problem that when a channel in the valve body is quickly closed, resulting in a sudden drop in flow demand, or when another channel is quickly opened, causing a surge in flow demand, a severe pressure disturbance will be instantly generated in the common chamber, and this disturbance will be transmitted to the entrances of all channels, causing the inlet pressures of other channels to deviate from the set value, the present invention is achieved through the following technical solutions.

[0006] A multi-channel fluid pressure-stabilizing control valve includes a pressure-stabilizing valve, which is composed of an upper valve body and a lower valve body. The lower valve body is installed at the bottom of the upper valve body. The lower valve body is provided with an input pipe and multiple output pipes. A chamber is formed inside the lower valve body. The multiple output pipes are connected to the chamber. The valve also includes:

[0007] The energy storage tank is opened on the top of the lower valve body;

[0008] Damping holes are provided on the bottom wall of the energy storage tank. The number of the damping holes is the same as the number of the output pipes. The energy storage tank is connected to the chamber through the damping holes.

[0009] Diaphragm, connected between the upper valve body and the lower valve body;

[0010] A spring seat is provided in the upper valve body and is mounted on top of the diaphragm;

[0011] An adjusting seat is installed in the upper valve body, and a first elastic member is installed between the spring seat and the adjusting seat;

[0012] The adjusting knob is installed on the top of the upper valve body. A screw is installed on the adjusting knob, and the screw is threadedly connected to the adjusting seat.

[0013] Preferably, the output pipe includes:

[0014] The valve core is installed in the output pipe;

[0015] A controller is arranged outside the output pipe;

[0016] The valve stem has one end that passes through the output pipe and is connected to the valve core, and the other end that is connected to the output shaft of the controller;

[0017] Active pre-charge accumulator, one end is installed at the bottom of the valve core, and the other end runs through the output pipe.

[0018] Preferably, the valve core includes:

[0019] The first energy storage groove is provided on the surface of the valve core;

[0020] An absorption pipe is installed in the valve core, and two ends of the absorption pipe are respectively connected to the first energy storage tank and the active pre-charge accumulator;

[0021] A replenishing pipe is installed on the active pre-charge accumulator, one end of which passes through the bottom of the valve core and extends into the valve hole of the valve core;

[0022] The piston is installed in the active pre-charge accumulator, and when the valve core rotates, the piston moves in the active pre-charge accumulator.

[0023] Preferably, an adjusting rod is installed at the bottom of the piston, a bottom plate is installed on the outer wall of the output pipe, a second screw rod is installed on the bottom plate, and the second screw rod passes through the active accumulator and is threadedly connected to the adjusting rod;

[0024] When the valve core rotates, the active pre-charge accumulator rotates synchronously, the adjusting rod rotates on the second screw rod, the adjusting rod moves axially along the second screw rod and pushes the piston to move in the active pre-charge accumulator.

[0025] Preferably, a buffer plate is installed in the first energy storage tank, a first energy storage plate is installed on one side of the buffer plate, the first energy storage plate covers the opening of the first energy storage tank, and a third elastic member is installed on the other side of the buffer plate, and the third elastic member is installed on the inner wall of the first energy storage tank.

[0026] Preferably, the output pipe further includes:

[0027] A plurality of grooves are formed on the inner wall of the chamber;

[0028] The passive accumulator is installed in the groove, is located at the inlet of the output pipe, and is connected to the valve stem.

[0029] Preferably, the passive accumulator comprises:

[0030] The second energy storage tank is provided at the bottom of the passive energy accumulator;

[0031] a second energy storage plate, installed in the second energy storage tank;

[0032] The fourth elastic member is installed between the second energy storage plate and the inner wall of the second energy storage tank.

[0033] Preferably, the passive accumulator further comprises:

[0034] A first screw rod is installed on the inner wall of the groove, and the first screw rod is threadedly connected to the passive accumulator;

[0035] A first winding wheel is sleeved on the first screw rod;

[0036] A second winding wheel is sleeved on the valve stem;

[0037] A connecting belt, with two ends respectively wound around the first winding wheel and the second winding wheel;

[0038] The fifth elastic member is installed on the inner wall of the groove, and the fifth elastic member is connected to the first winding wheel.

[0039] Preferably, a connecting hole is provided on the inner wall of the groove, and a connecting belt is provided through the connecting hole.

[0040] Preferably, the diaphragm is formed by compounding an annular corrugated metal sheet and an elastomer sealing layer.

[0041] The present invention provides a multi-channel fluid pressure-stabilizing control valve. Compared with existing technologies, it has the following beneficial effects: high-precision pressure stabilization is achieved through a combination of mechanical feedback and multi-stage energy storage compensation. The diaphragm senses chamber pressure changes in real time, and the pressure regulating seat is linked to adjust the opening of the liquid inlet channel. The passive accumulator and the active pre-charge accumulator work together to quickly absorb or replenish pressure. When a channel is quickly closed or opened, causing a sudden change in flow, the fluctuation range of the inlet pressure of other channels can be effectively controlled, ensuring that the pressure of each channel is stable at the set value. This solution has a fast response capability. The passive accumulator, through the mechanical linkage of the valve core rotation, can respond at the moment the valve core moves, quickly absorbing or releasing fluid, reducing the transmission of pressure peaks or valleys to other channels. The active pre-charge accumulator continues to adjust and further compensate for the pressure, effectively suppressing the transmission of pressure disturbances between channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the three-dimensional structure proposed by the present invention.

[0043] Figure 2 This is a schematic diagram of a three-dimensional structure from another perspective proposed by the present invention.

[0044] Figure 3 This is a cross-sectional schematic diagram of the pressure-stabilizing valve proposed in the present invention.

[0045] Figure 4 This is a cross-sectional schematic diagram of the upper valve body, lower valve body, inlet pipe and outlet pipe proposed in the present invention.

[0046] Figure 5 This is a schematic structural diagram of the valve core, controller, passive accumulator and active pre-charge accumulator proposed in the present invention.

[0047] Figure 6 This is a cross-sectional schematic diagram of the passive accumulator proposed in the present invention.

[0048] Figure 7 This is a schematic cross-sectional view of the valve core proposed in the present invention.

[0049] Figure 8 This is a cross-sectional schematic diagram of the valve core and active pre-charge accumulator proposed in the present invention.

[0050] The reference numerals in the figures are:

[0051] 100, pressure-stabilizing valve; 101, upper valve body; 102, lower valve body; 103, inlet pipe; 104, outlet pipe; 105, damping orifice;

[0052] 200, diaphragm; 201, spring seat; 202, first elastic member; 203, adjustment seat; 204, connecting rod; 205, pressure regulating seat; 206, second elastic member;

[0053] 300, valve core; 301, controller; 302, valve stem; 303, first energy storage plate; 304, buffer plate; 305, third elastic member; 306, first energy storage tank;

[0054] 400, passive accumulator; 401, second energy storage plate; 402, second energy storage tank; 403, fourth elastic member; 404, first screw rod; 405, first winding wheel; 406, connecting belt; 407, fifth elastic member; 408, second winding wheel;

[0055] 500, active pre-charge accumulator; 501, base plate; 502, piston; 503, adjustment rod; 504, second screw rod; 505, replenishing pipe; 506, absorption pipe. DETAILED DESCRIPTION

[0056] The present invention is further described below with reference to specific examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of protection of the present invention.

[0057] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0058] Example 1: Reference Figures 1-4 , a multi-channel fluid pressure-stabilizing control valve, comprising:

[0059] The pressure-stabilizing valve 100 is composed of an upper valve body 101 and a lower valve body 102. The lower valve body 102 is installed at the bottom of the upper valve body 101. An input pipe 103 and several output pipes 104 are installed on the lower valve body 102. A chamber is provided in the lower valve body 102. Several output pipes 104 are connected to the chamber. An adjusting groove is provided on the bottom wall of the chamber. A pressure-regulating seat 205 is installed in the adjusting groove. A second elastic member 206 is installed at the bottom of the pressure-regulating seat 205. One end of the second elastic member 206 is connected to the bottom wall of the adjusting groove. A pressure-regulating ring is installed on the top of the chamber. The pressure-regulating seat 205 is arranged below the pressure-regulating ring. A liquid inlet channel is provided between the pressure-regulating ring and the pressure-regulating seat 205. The chamber is connected to the liquid outlet of the liquid inlet channel, and the input pipe 103 is connected to the liquid inlet of the liquid inlet channel. A partition is provided in the chamber to separate the chamber so that the fluid entering the input pipe 103 flows into each output pipe 104 in the chamber through the liquid inlet channel. The liquid inlet amount of the liquid inlet channel is adjusted by lifting and lowering the pressure regulating seat 205. An energy storage tank is provided at the top of the lower valve body 102, and a damping hole 105 is provided on the bottom wall of the energy storage tank. The number of damping holes 105 is the same as that of the output pipe 104. The energy storage tank is connected to the chamber through the damping hole 105. A diaphragm 200 is connected between the upper valve body 101 and the lower valve body 102. The diaphragm 200 is composed of a composite of an annular corrugated metal sheet and an elastomer sealing layer. A spring seat 201 is installed on the top of the diaphragm 200, and a connecting rod 204 is installed at the bottom of the spring seat 201. The connecting rod 204 passes through the diaphragm 200 and the bottom wall of the energy storage tank and is connected to the pressure regulating seat 205. A first elastic member 202 is installed on the top of the spring seat 201, and an adjusting seat 203 is installed on the top of the first elastic member 202. An adjusting knob is installed on the top of the upper valve body 101, and a screw is installed on the adjusting knob, which is threadedly connected to the adjusting seat 203.

[0060] This embodiment achieves high-precision pressure stabilization control through mechanical feedback and multi-stage energy storage compensation. When the input pressure fluctuates, the diaphragm 200 senses the pressure change and drives the pressure regulating seat 205 to adjust the opening of the liquid inlet channel. At the same time, the passive accumulator 400 and the active pre-charged accumulator 500 compensate for the pressure in real time through mechanical linkage, ensuring stable pressure in each output pipe 104.

[0061] The fluid in the input pipe 103 flows into the chamber through the liquid inlet channel between the pressure regulating seat 205 and the pressure regulating ring. The pressure regulating seat 205 is linked to the first elastic member 202 through the diaphragm 200. When the pressure in the chamber rises suddenly due to the action of the adjacent channel, the liquid in the chamber flows into the energy storage tank through the damping hole 105. The diaphragm 200 moves upward to compress the first elastic member 202. The first elastic member 202 is compressed to absorb excess fluid and prevent the pressure peak from being transmitted to the inlet of the valve core 300 of each channel. When the pressure in the chamber drops suddenly, the first elastic member 202 is reset, and the first The elastic member 202 drives the diaphragm 200 to reset and release the fluid stored in the energy storage tank, replenishing the flow into the chamber to prevent the transmission of pressure valleys. The preload force of the first elastic member 202 can be set by rotating the adjustment knob to accurately control the steady-state pressure value. The first elastic member 202 and the second elastic member 206 are springs, and elastic blocks can also be used. When the diaphragm 200 moves upward, it drives the spring seat 201 to move. The spring seat 201 drives the connecting rod 204 and the pressure-regulating seat 205 to move. The upward movement of the pressure-regulating seat 205 reduces the channel opening, and vice versa, it increases the opening.

[0062] Embodiment 2: Referring to Figure - Figure, a number of grooves are provided on the inner wall of the chamber, and a passive accumulator 400 is installed in the groove. The passive accumulator 400 is located at the entrance of the output pipe 104, and a second energy storage groove 402 is provided at the bottom of the passive accumulator 400. A second energy storage plate 401 is installed in the second energy storage groove 402, and a fourth elastic member 403 is installed between the second energy storage plate 401 and the inner wall of the second energy storage groove 402. A first screw rod 404 is installed on the inner wall of the groove, and the first screw rod 404 is threadedly connected to the passive accumulator 400. A first winding wheel 405 is sleeved on the first screw rod 404, a valve core 300 is installed in the output pipe 104, and a controller 301 is provided on the outside of the output pipe 104. A valve stem 302 is connected to the output shaft of the controller 301, and the valve stem 302 passes through the output pipe 104 and is connected to the valve core 300, and a second winding wheel is sleeved on the valve stem 302 408. A connecting belt 406 is wound around the second winding wheel 408. One end of the connecting belt 406 is wound around the first winding wheel 405. A connecting hole is opened on the inner wall of the groove. The connecting belt 406 is arranged to pass through the connecting hole. A fifth elastic member 407 is installed on the inner wall of the groove. The fifth elastic member 407 is connected to the axis of the first winding wheel 405. The fifth elastic member 407 is a clockwork spring. When the second winding wheel 408 rotates with the valve stem 302, one end of the connecting belt 406 is wound around it, and the other end of the connecting belt 406 drives the first winding wheel 405 and the first screw rod 404 to rotate. The first winding wheel 405 drives the clockwork spring to deform and store force. When the controller 301 controls the valve core 300 to close or open the output pipe 104, the passive accumulator 400 can actively absorb or replenish the pressure in the chamber. At the same time, the second energy storage tank 402 can further absorb and replenish the remaining pressure.

[0063] When the valve core 300 rotates, the valve stem 302 drives the second winding wheel 408 to rotate, pulling the first winding wheel 405 through the connecting belt 406, the fifth elastic member 407 deforms and accumulates force, driving the first screw rod 404 to rotate, so that the passive accumulator 400 moves toward the inside of the groove, absorbs excess fluid, and prevents the pressure peak from being transmitted to the inlet of the valve core 300 in the channel next to the passive accumulator 400; when the valve core 300 is closed, the second winding wheel 408 rotates in the opposite direction, and the fifth elastic member 407 drives the first winding wheel 405 to reset and rotate. The fifth elastic member 407 adopts a clockwork spring or a coil spring, and the fourth elastic member 403 adopts a spring or an elastic block. The first screw rod 404 drives the passive accumulator 400 to move downward to replenish the chamber pressure; the second energy storage plate 401 at the bottom of the passive accumulator 400 further absorbs / releases pressure through the fourth elastic member 403 to enhance the compensation effect.

[0064] When the valve core 300 opens and closes quickly, the passive accumulator 400 near the inlet of the output pipe 104 responds in advance to reduce pressure shock. No external energy is required, the mechanical structure is highly reliable, and maintenance costs are low.

[0065] Embodiment 3: Referring to FIG-FIG, a first energy storage groove 306 is provided on the surface of the valve core 300, a buffer plate 304 is installed in the first energy storage groove 306, a first energy storage plate 303 is installed on one side of the buffer plate 304, the first energy storage plate 303 covers the opening of the first energy storage groove 306, a third elastic member 305 is installed on the other side of the buffer plate 304, one end of the third elastic member 305 is installed on the inner wall of the first energy storage groove 306, an active pre-charge accumulator 500 is installed at the bottom of the valve core 300, the active pre-charge accumulator 500 passes through the output pipe 104, an absorption pipe 506 is installed in the valve core 300, and the two ends of the absorption pipe 506 are respectively connected to the first energy storage groove 306 and the active pre-charge accumulator 500, the active pre-charge accumulator A replenishing pipe 505 is installed on 500, one end of the replenishing pipe 505 passes through the valve core 300 and extends into the valve hole of the valve core 300, a piston 502 is installed in the active pre-charge accumulator 500, and an adjusting rod 503 is installed at the bottom of the piston 502, a bottom plate 501 is installed on the outer wall of the output pipe 104, a second screw rod 504 is installed on the bottom plate 501, one end of the second screw rod 504 passes through the active accumulator and is threadedly connected to the adjusting rod 503, when the valve core 300 rotates, the active pre-charge accumulator 500 is driven to rotate together, at this time, the bottom plate 501 and the second screw rod 504 are fixed on the output pipe 104, and the adjusting rod 503 rotates on the second screw rod 504 and drives the piston 502 to rise and fall in the active pre-charge accumulator 500.

[0066] When the valve core 300 rotates, the active pre-charge accumulator 500 rotates synchronously, but the bottom plate 501 and the second screw rod 504 are fixed. The adjusting rod 503 moves on the screw rod, which can drive the piston 502 to rise and fall. When the valve core 300 rotates and closes the output pipe 104, the pressure at the inlet of the output pipe 104 rises suddenly, and the first accumulator plate 303 is squeezed and moves, and at the same time, the first accumulator tank 306 is opened. The first accumulator tank 306 absorbs excess fluid and prevents the pressure peak from being transmitted to the output pipe 104. 4 inlet, and at the same time, the piston 502 moves through the absorption pipe 506 to suck the fluid absorbed in the first energy storage tank 306 into the active pre-charge accumulator 500, and the piston 502 moves to store energy; when the valve core 300 rotates in the opposite direction and opens the output pipe 104, the pressure at the inlet of the output pipe 104 drops sharply, and at the same time, the piston 502 returns to its original position and releases the fluid in the active pre-charge accumulator 500 to the inlet of the output pipe 104 through the replenishment pipe 505, thereby replenishing the flow and preventing the transmission of the pressure valley.

[0067] The first energy storage groove 306 on the surface of the valve core 300 absorbs local pressure fluctuations before the active accumulator through the buffer plate 304 and the third elastic member 305, forming a pre-buffer, actively responding to the movement of the valve core 300, and compensating the pressure in real time. Especially in the scenario of large flow changes, combined with the passive accumulator 400, high-precision pressure stabilization is achieved. The third elastic member 305 uses a spring, and can also use an elastic block.

[0068] During use, by rotating the adjusting knob on the top of the upper valve body 101, the screw is driven to rotate, the preload force of the first elastic member 202 is adjusted, the target pressure stabilization value is set, and a reference is provided for subsequent pressure regulation; when the input pressure or the chamber pressure rises suddenly due to the action of the adjacent channel, the liquid in the chamber flows into the energy storage tank on the top of the lower valve body 102 through the damping hole 105, and the pressure pushes the diaphragm 200 to move upward, and the diaphragm 200 drives the spring seat 201 on the top to move, and the spring seat 201 moves the pressure regulating seat 205 upward through the connecting rod 204, thereby reducing the pressure regulating seat 205 and the regulating seat 205. The opening of the liquid inlet channel between the pressure rings reduces the amount of fluid flowing into the chamber from the input pipe 103. During this process, the first elastic member 202 is compressed to absorb excess fluid pressure and prevent the pressure peak from being transmitted to the inlet of the valve core 300 of each channel; if the chamber pressure drops suddenly, the compressed first elastic member 202 resets, driving the diaphragm 200, the spring seat 201, the connecting rod 204 and the pressure regulating seat 205 to move downward, increasing the opening of the liquid inlet channel. At the same time, the spring group drives the diaphragm 200 to reset and release the fluid stored in the energy storage tank, replenishing the flow into the chamber and preventing the pressure valley from being transmitted.

[0069] When the valve core 300 is opened, the controller 301 controls the valve core 300 to open the output pipe 104. The valve stem 302 rotates the second winding wheel 408, which pulls the first winding wheel 405 through the connecting belt 406, causing the fifth elastic member 407 to deform and accumulate force. This simultaneously drives the first screw 404 to rotate, and the passive accumulator 400 moves toward the interior of the groove. During this process, the passive accumulator 400 absorbs excess fluid in the chamber, preventing the pressure peak from being transmitted to the inlet of the valve core 300 in the adjacent channel.

[0070] When the valve core 300 is closed, the second winding wheel 408 rotates in the opposite direction, the fifth elastic member 407 drives the first winding wheel 405 to rotate in the reverse direction, and the first screw rod 404 drives the passive accumulator 400 to move downward, releasing the stored fluid back into the chamber to replenish the chamber pressure. The second energy storage plate 401 at the bottom of the passive accumulator 400 further absorbs or releases pressure through the fourth elastic member 403 to enhance the compensation effect.

[0071] The valve core 300 rotates and closes the output pipe 104, causing a sudden increase in pressure at the inlet of the output pipe 104. The pressure pushes the first energy storage plate 303 in the first energy storage tank 306. The first energy storage plate 303 moves to open the first energy storage tank 306, absorbing excess fluid and acting as a pre-buffer. At the same time, the rotation of the valve core 300 drives the active pre-charge accumulator 500 to rotate synchronously. Since the bottom plate 501 and the second screw rod 504 are fixed to the output pipe 104, the adjusting rod 503 rotates on the second screw rod 504 and drives the piston 502 to move upward. The fluid absorbed in the first energy storage tank 306 is sucked into the active pre-charge accumulator 500 through the absorption pipe 506, and the piston 502 moves to store energy.

[0072] The opening of the valve core 300 causes a sudden pressure drop: the valve core 300 rotates in the opposite direction to open the output pipe 104, causing a sudden pressure drop at the inlet of the output pipe 104. The piston 502 returns to its original position in the active pre-charge accumulator 500 and moves downward, releasing the fluid stored in the active pre-charge accumulator 500 to the inlet of the output pipe 104 through the replenishing pipe 505, replenishing the flow and preventing the transmission of a deep pressure trough.

[0073] In summary, compared with the existing technology, it has the following beneficial effects:

[0074] High-precision pressure stabilization is achieved by combining mechanical feedback with multi-stage energy storage compensation. The diaphragm 200 senses chamber pressure changes in real time, and the linked pressure-regulating seat 205 adjusts the opening of the liquid inlet channel. The passive accumulator 400 and the active pre-charge accumulator 500 work together to quickly absorb or replenish pressure. When a channel is quickly closed or opened, causing a sudden change in flow, the fluctuation range of the inlet pressure of other channels can be effectively controlled to ensure that the pressure of each channel is stable at the set value.

[0075] This solution has a fast response capability. The passive accumulator 400 is mechanically linked to the rotation of the valve core 300 and can respond at the moment the valve core 300 moves, quickly absorbing or releasing fluid, and reducing the transmission of pressure peaks or valleys to other channels; the active pre-charged accumulator 500 continues to adjust in the future to further compensate for the pressure and effectively suppress the transmission of pressure disturbances between channels.

[0076] By setting up a multi-stage buffer structure including the energy storage tank and the damping hole 105, the second energy storage plate 401 of the passive accumulator 400, and the first energy storage tank 306 of the valve core 300, pressure can be absorbed and released in stages. The energy storage tank and the damping hole 105 slow down the pressure fluctuation speed, the passive accumulator 400 and the active pre-charge accumulator 500 actively compensate for the pressure, and the first energy storage tank 306 performs local pre-buffering at the valve core 300. The multi-stage buffering works together to gradually weaken the pressure disturbance in the chamber caused by the sudden change of the channel flow, so that the valve body operation is more stable.

[0077] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are contemplated within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the claimed invention. Thus, many modifications may be made to adapt a particular environment or material to the true scope and spirit of the invention. The invention is not intended to be limited to the specific terminology used in the claims below and / or to the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention is intended to include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention will be determined solely by the appended claims.

Claims

1. A multi-channel fluid pressure-stabilizing control valve, comprising a pressure-stabilizing valve (100), which is composed of an upper valve body (101) and a lower valve body (102), wherein the lower valve body (102) is mounted at the bottom of the upper valve body (101), the lower valve body (102) is provided with an input pipe (103) and a plurality of output pipes (104), a chamber is formed inside the lower valve body (102), and the plurality of output pipes (104) are connected to the chamber, characterized in that: Also includes: An energy storage tank is provided on the top of the lower valve body (102); A damping hole (105) is provided on the bottom wall of the energy storage tank. The number of the damping holes (105) is the same as the number of the output pipes (104). The energy storage tank is connected to the chamber through the damping hole (105); a diaphragm (200) connected between the upper valve body (101) and the lower valve body (102); A spring seat (201) is provided in the upper valve body (101), and the spring seat (201) is installed on the top of the diaphragm (200); An adjusting seat (203) is installed in the upper valve body (101), and a first elastic member (202) is installed between the spring seat (201) and the adjusting seat (203); The regulating knob is mounted on the top of the upper valve body (101). A screw is mounted on the regulating knob, and the screw is threadedly connected to the regulating seat (203).

2. The multi-channel fluid pressure-stabilizing control valve according to claim 1, characterized in that: The output pipe (104) includes: A valve core (300) is installed in the output pipe (104); A controller (301) is arranged outside the output pipe (104); A valve stem (302), one end of which passes through the output pipe (104) and is connected to the valve core (300), and the other end of which is connected to the output shaft of the controller (301); An active pre-charge accumulator (500) has one end mounted on the bottom of the valve core (300) and the other end passing through the output pipe (104).

3. The multi-channel fluid pressure stabilizing control valve according to claim 2, characterized in that: The valve core (300) comprises: A first energy storage groove (306) is provided on the surface of the valve core (300); An absorption tube (506) is installed in the valve core (300), and two ends of the absorption tube (506) are respectively connected to the first energy storage tank (306) and the active pre-charge accumulator (500); A replenishing pipe (505) is installed on the active pre-charge accumulator (500), and one end of the replenishing pipe (505) passes through the bottom of the valve core (300) and extends into the valve hole of the valve core (300); The piston (502) is installed in the active pre-charge accumulator (500). When the valve core (300) rotates, the piston (502) moves in the active pre-charge accumulator (500).

4. The multi-channel fluid pressure stabilizing control valve according to claim 3, characterized in that: An adjusting rod (503) is installed at the bottom of the piston (502), a bottom plate (501) is installed on the outer wall of the output pipe (104), a second screw rod (504) is installed on the bottom plate (501), and the second screw rod (504) passes through the active accumulator and is threadedly connected to the adjusting rod (503); When the valve core (300) rotates, the active pre-charge accumulator (500) rotates synchronously, the adjusting rod (503) rotates on the second screw rod (504), the adjusting rod (503) moves axially along the second screw rod (504) and pushes the piston (502) to move in the active pre-charge accumulator (500).

5. The multi-channel fluid pressure stabilizing control valve according to claim 3, characterized in that: A buffer plate (304) is installed in the first energy storage tank (306), a first energy storage plate (303) is installed on one side of the buffer plate (304), the first energy storage plate (303) covers the opening of the first energy storage tank (306), a third elastic member (305) is installed on the other side of the buffer plate (304), and the third elastic member (305) is installed on the inner wall of the first energy storage tank (306).

6. The multi-channel fluid pressure stabilizing control valve according to claim 2, characterized in that: The output pipe (104) further includes: A plurality of grooves are formed on the inner wall of the chamber; A passive accumulator (400) is installed in the groove. The passive accumulator (400) is located at the inlet of the output pipe (104). The passive accumulator is connected to the valve stem (302).

7. The multi-channel fluid pressure-stabilizing control valve according to claim 6, characterized in that: The passive accumulator (400) comprises: A second energy storage tank (402) is provided at the bottom of the passive energy accumulator (400); A second energy storage plate (401) is installed in the second energy storage tank (402); The fourth elastic member (403) is installed between the second energy storage plate (401) and the inner wall of the second energy storage tank (402).

8. The multi-channel fluid pressure stabilizing control valve according to claim 6, characterized in that: The passive accumulator (400) further comprises: A first screw rod (404) is installed on the inner wall of the groove, and the first screw rod (404) is threadedly connected to the passive accumulator (400); A first winding wheel (405) is sleeved on the first screw rod (404); A second winding wheel (408) is sleeved on the valve stem (302); A connecting belt (406), with two ends respectively wound around the first winding wheel (405) and the second winding wheel (408); The fifth elastic member (407) is installed on the inner wall of the groove, and the fifth elastic member (407) is connected to the first winding wheel (405).

9. The multi-channel fluid pressure stabilizing control valve according to claim 6, characterized in that: A connecting hole is provided on the inner wall of the groove, and a connecting belt (406) is arranged through the connecting hole.

10. The multi-channel fluid pressure-stabilizing control valve according to claim 1, characterized in that: The diaphragm (200) is formed by compounding an annular corrugated metal sheet and an elastomer sealing layer.

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