CN115468023A

CN115468023A - Valve with pressure regulating device

Info

Publication number: CN115468023A
Application number: CN202211328331.9A
Authority: CN
Inventors: 项光忠; 项炳博; 杨建财; 张炳坚; 林荣华; 傅家宏
Original assignee: Zhitai Technology Group Co ltd
Current assignee: Zhitai Technology Group Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2022-12-13
Anticipated expiration: 2042-10-26
Also published as: CN115468023B

Abstract

The invention discloses a valve with a pressure regulating device, which comprises a valve body, a valve cover, a valve rod, an opening and closing piece and a pressure regulating pipe, wherein the pressure regulating pipe comprises an inflow section, a pressure regulating section and an outflow section which are sequentially connected, a plurality of drainage plates are arranged in the pressure regulating section along the axis of the pressure regulating section, a circulation channel is formed among the drainage plates, a pressure regulating cavity is formed between each drainage plate and the inner wall of the pressure regulating section, a part of fluid medium is guided into the pressure regulating cavity by the drainage plates, an outer pipe is arranged outside the pressure regulating pipe, a closed pressure relief cavity is formed between the outer pipe and the pressure regulating pipe and communicated with each pressure regulating cavity through an opening, the pressure relief cavity is communicated with the outflow section, each drainage plate is arranged in a reciprocating sliding mode along the axis of the pressure regulating section and used for regulating the size of the pressure regulating cavity, and a force unloading assembly is connected among the drainage plates. The invention has the following advantages and effects: the valve with the pressure regulating device is compact in structure and long in service life, and therefore has better universality and practicability.

Description

Valve with pressure regulating device

Technical Field

The invention relates to the field of valves, in particular to a valve with a pressure regulating device.

Background

The valve is a pipeline accessory used for opening and closing a pipeline, controlling the flow direction, regulating and controlling parameters of a conveying medium. According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like. The valve is a control part in a fluid conveying system and has the functions of stopping, regulating, guiding, preventing counter flow, stabilizing pressure, shunting, overflowing, relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

The existing valves of various types do not have the pressure regulating function, and the original basic functions of the valves are kept in some special working conditions, so that the valves have the pressure regulating function, and the pressure regulating devices are required to be installed on the valves. The existing pressure regulating device cannot be suitable for some compact installation conditions due to the large volume, and is very easy to damage when being subjected to the instantaneous impulsive force of a fluid medium due to the fact that the existing pressure regulating device is not provided with a corresponding force unloading structure and is in complex rigid connection with a connecting structure, so that the valve is poor in universality and short in service life.

Disclosure of Invention

The invention aims to provide a valve with a pressure regulating device, which has a compact structure and a long service life, thereby having better universality and practicability.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a valve with pressure regulating device, includes the valve body, set up in the valve gap of valve body, install in the valve gap and extend into the valve body the valve rod, set up in the pressure regulating pipe of opening and close piece and connecting the valve body of valve rod, the pressure regulating pipe is including the influent stream section that connects gradually, pressure regulating section and the section of effluenting, it forms a circulation passageway, every to be provided with between a plurality of drainage plates and a plurality of drainage plates along its axis arrangement in the pressure regulating section all form a pressure regulating chamber and a drainage plate guide partial fluid medium entering pressure regulating chamber between drainage plate and the pressure regulating section inner wall, the pressure regulating pipe is equipped with the outer tube outward, forms an inclosed pressure releasing chamber between outer tube and the pressure regulating pipe and releases the chamber and every pressure regulating chamber between constitute through the trompil and communicate with each other, release the pressure chamber with the section of effluenting, every the drainage plate all sets up along the reciprocal slip of pressure regulating section axis and is used for adjusting pressure regulating chamber size, and is a plurality of it unloads the power subassembly to be connected with between the drainage plate.

By adopting the technical scheme, the fluid medium flows out of the outflow section through the pressure regulating section after entering from the inflow section, one part of the fluid medium entering the pressure regulating section directly flows out of the outflow section through the flow passage, and the other part of the fluid medium impacts the flow guide plate and is guided into the pressure regulating cavity by the flow guide plate. And the drainage plate impacted by the fluid medium moves and is matched with the force unloading assembly to unload the stress on the force drainage plate, so that the drainage plate is prevented from being damaged by the instantaneous impact of the fluid. Fluid medium that gets into the pressure regulating chamber need fill can flow backward after the pressure regulating chamber to this realizes pressure regulating and decompression effect, and change the size in pressure regulating chamber through the drainage board that removes the setting, make when fluid pressure is less, the pressure regulating chamber is also less, thereby reduce the time that fluid medium filled the pressure regulating chamber, it guarantees fluid medium and reachs the flow when pressure is less to make it can be faster through the pressure regulating section, make the pressure regulating length of pressure regulating section can realize automatically regulated according to pressure size, realize pressure regulating's automatic control with this. The fluid medium that gets into the pressure regulating intracavity flows into the pressure relief chamber through the trompil, the pressure of fluid medium is further reduced through the existence in pressure relief chamber, make it flow to the section of effluenting after filling the pressure relief chamber, further realize adjusting in control to bigger pressure, and there is the flow difference through the fluid that gets into the section of effluenting behind pressure regulating chamber and the pressure relief chamber and the fluid that gets into the section of effluenting through the circulation passageway, with this to further reduce the pressure of effluenting, realize better regulation control of pressure, make this valve with regulator have longer life, thereby better commonality and practicality have. Compared with the original pipeline, the diameter of the pressure regulating device is only slightly increased, so that the structure of the pressure regulating device is smaller in occupied space and more compact in structure compared with the existing valve with the pressure regulating device.

Further setting as follows: every the pressure regulating chamber is formed at every drainage plate and is close to inflow section one side, every the trompil extends along pressure regulating section axis and forms a rectangular shape, the drainage plate slide set up be used for the size of synchronous regulation pressure regulating chamber and trompil intercommunication pressure regulating chamber position, every one side of drainage plate backpressure regulating chamber is fixed to be provided with and covers the trompil and to be located the baffle of drainage plate for pressure regulating chamber other side position, the power subassembly that unloads be located the pressure release intracavity.

Through adopting above-mentioned technical scheme, set up the trompil into the length bar and slide the drainage plate and set up in the mode of trompil for the drainage plate can change the size of trompil according to fluidic different pressures at gliding in-process synchronous regulation pressure regulating chamber and the trompil size of being connected the pressure regulating chamber, realizes the automatically regulated of pressure in proper order, and increase this adjusting device's adjustable pressure scope greatly, makes it have better practicality. The structure is prevented from unnecessarily communicating the pressure regulating section and the pressure relief cavity and closing the open hole by arranging the baffle, so that the structure can disconnect the communication between the pressure regulating section and the pressure relief cavity under the condition of lower fluid pressure, the outflow of fluid media cannot be influenced, the pressure regulating and outflow control functions are realized, and the structure is more practical.

Further setting as follows: the circulation passageway is including forming in the discharge orifice of every drainage plate, and is a plurality of the discharge orifice reduces the setting gradually along the flow direction of fluid medium, every the drainage plate is for surrounding in the annular and the annular inner circle formation that pressure regulating section centre of a circle set up around the discharge orifice.

Through adopting above-mentioned technical scheme, increase the volume in pressure regulating chamber through this kind of setting to adjust higher pressure, guarantee the fluid volume that gets into every pressure regulating chamber at the discharge orifice that leads to diminishing gradually, realize even regulation.

Further setting as follows: the power unloading assembly comprises a plurality of connecting rings and a plurality of power unloading springs, the connecting rings are fixedly connected with the drainage plates, the connecting rings correspond to the drainage plates one to one, and the connecting rings are adjacent to the drainage plates one to one through the power unloading springs.

Through adopting above-mentioned technical scheme, the mode of connecting through unloading the power spring between the adjacent drainage plate can realize the independent motion of every drainage plate and constitute the linkage between a plurality of drainage plates. Make the drainage plate in the forefront when the atress, this acting force can loop through unload subsequent drainage plate of power spring transmission direction and subsequent unload the power spring and realize the successive layer and subtract progressively, carries out the most effective power of unloading to instantaneous impulsive force to the at utmost, guarantees the life of structure. The volume of the pressure regulating cavity along the flowing direction of the fluid is gradually reduced when the fluid is stressed due to the characteristic of gradual reduction layer by layer, and the characteristic can reduce the amount of the fluid medium entering the pressure regulating cavity when the pressure of the fluid medium is lower, so that the fluid medium can be ensured to rapidly pass through the pressure regulating section, and the outflow rate of the fluid under the condition of low pressure is ensured.

Further setting as follows: the outer tube is including fixed setting in the fixed part of pressure regulating pipe and with the sealed sliding fit's of fixed part flexible portion, flexible portion cover locate the pressure regulating pipe and with its sealed sliding fit, be equipped with the tight spring that supports that the drive flexible portion moved to the fixed part between flexible portion and the pressure regulating pipe.

Through adopting above-mentioned technical scheme, when the pressure in the pressure release intracavity increases gradually, the pressure drive pars contractilis outwards stretches out and extrudes and supports tight spring to this comes to change the volume in pressure release chamber according to the pressure size of difference, reduces the time that fluid medium filled pressure release chamber when playing the regulatory action to pressure, guarantees the play flow when the low pressure with this.

Further setting the following steps: the outer wall of the telescopic part is provided with pressure scales arranged along the moving direction of the telescopic part.

By adopting the technical scheme, the telescopic motion of the telescopic part refers to the set pressure scale, so that a worker can clearly and visually know the pressure in the pipeline.

Further setting as follows: the pressure regulating pipe is sleeved with a limiting nut in threaded connection with the pressure regulating pipe, one end of the abutting spring abuts against the limiting nut, the other end of the abutting spring abuts against the telescopic part, and the force unloading spring and the connecting ring and the force unloading spring and the pressure regulating pipe are both detachably and fixedly connected.

Through adopting above-mentioned technical scheme, the pars contractilis rotates stop nut dorsad and makes to offset and keep away from the pars contractilis in the tight spring that supports of pars contractilis, can realize the separation of pars contractilis and fixed part like this to can change the power of unloading spring that is located the pressure release intracavity, with this life who prolongs the power of unloading subassembly.

Further setting the following steps: the flow inlet section is provided with an emergency drainage port, the emergency drainage port is provided with a sealing cover, the sealing cover is connected with a pull rod penetrating out of the flow inlet section, the pull rod is in sealing fit with the flow inlet section, a limiting pin is inserted into the pull rod, the telescopic portion is fixedly connected with a connecting rod, and the telescopic portion moves back to the fixed portion to drive the limiting pin to be separated from the pull rod through the connecting rod.

By adopting the technical scheme, the pressure of the pressure relief cavity is increased, the connecting rod is driven to move through the telescopic part, the limiting pin is ejected away from the pull rod by the connecting rod in motion, the pull rod loses the spacing of the limiting pin, and then the sealing cover is separated from the emergency patting discharge outlet, so that fluid media in the pipeline can be discharged through the emergency discharge outlet, the pipeline is prevented from bursting due to overlarge pressure, the potential safety hazard is avoided, and emergency control is realized.

By adopting the technical scheme, the invention has the advantages of compact structure and long service life, thereby having better universality and practicability.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural diagram of a pressure regulating pipe in the embodiment;

FIG. 3 is a schematic structural view of the telescoping section in the embodiment;

FIG. 4 is a partial schematic structural view of an embodiment;

FIG. 5 is a partial perspective view of the embodiment;

FIG. 6 is a schematic structural diagram of a flow guide plate in an embodiment;

FIG. 7 is another partial structural diagram of the embodiment.

In the figure: 1. a pressure regulating pipe; 1.1, an inflow section; 1.2, a pressure regulating section; 1.3, an outflow section; 2. a drainage plate; 3. a pressure regulating cavity; 4. an outer tube; 41. a fixed part; 42. a telescopic part; 5. a pressure relief cavity; 6. opening a hole; 7. a force-relieving assembly; 71. a connecting ring; 72. a force-releasing spring; 8. a baffle plate; 9. an orifice; 10. the spring is tightly propped; 11. pressure scales; 12. a limit nut; 13. an emergency drain port; 14. sealing the cover; 15. a pull rod; 16. a limit pin; 17. a connecting rod; 18. a valve body; 19. a valve cover; 20. a valve stem; 21. an opening and closing member.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 7, a valve with a pressure regulating device includes a valve body 18, a bonnet 19 fixedly disposed on the valve body 18, a valve rod 20 mounted on the bonnet 19 and extending into the valve body 18, a closure member 21 mounted on the valve rod 20, and a pressure regulating pipe 1 fixedly disposed on one side of the valve body 18. The valve cover 19 is fixedly provided with an air cylinder of a control valve rod 20, a piston rod of the air cylinder is fixedly connected with the valve rod 20, and the opening and closing piece 21 is fully opened or closed through the air cylinder control valve rod 20.

The pressure regulating pipe 1 is provided with a plurality of drainage plates 2 and forms a circulation passageway between along its axis arrangement in the pressure regulating section 1.2 including the section of flowing in 1.1, the pressure regulating section 1.2 and the section of effluenting 1.3 of a body coupling in proper order, all forms a pressure regulating chamber 3 and drainage plate 2 guide some fluid medium entering pressure regulating chamber 3 between every drainage plate 2 and the pressure regulating section 1.2 inner wall. The outer tube 4 is equipped with outside the pressure regulating pipe 1, forms a confined pressure release chamber 5 between outer tube 4 and the pressure regulating pipe 1 and communicates with each other through trompil 6 constitution between pressure release chamber 5 and every pressure regulating chamber 3, and pressure release chamber 5 communicates with each other with the section of effluenting 1.3. Every drainage plate 2 all sets up along the reciprocating sliding of pressure regulating section 1.2 axis, is connected with the power of unloading subassembly 7 that is located pressure release chamber 5 between a plurality of drainage plates 2.

Every pressure regulating chamber 3 all is formed at every drainage plate 2 and is close to inflow section 1.1 one side, and every trompil 6 extends along pressure regulating section 1.2 axis and forms a rectangular shape, and drainage plate 2 slides and sets up in the size that trompil 6 is used for synchronous regulation

pressure regulating chamber

3 and 3 positions in trompil 6 intercommunication pressure regulating chamber. Every drainage plate 2 all is fixed to be provided with in one side of pressure regulating chamber 3 dorsad and covers trompil 6 and be located drainage plate 2 for the baffle 8 of 3 other side positions in pressure regulating chamber, baffle 8 is located the pressure regulating section 1.2 outer wall and slides rather than offsetting.

The flow passage comprises flow holes 9 formed in each flow guide plate 2, a plurality of flow holes 9 are arranged in a gradually reduced mode along the flowing direction of fluid media, and each flow guide plate 2 is an annular inner ring formed by surrounding the circle center of the pressure regulating section 1.2. The force unloading assembly 7 comprises a plurality of connecting rings 71 and a plurality of force unloading springs 72, wherein the connecting rings 71 are fixedly connected with the flow guide plates 2, the connecting rings 71 correspond to the flow guide plates 2 one by one, adjacent connecting rings 71 are connected through the force unloading springs 72, and the last connecting ring 71 is connected with the pressure regulating pipe 1 through the force unloading springs 72.

The outer tube 4 comprises a fixing portion 41 fixedly sleeved on the pressure regulating tube 1 and an expansion portion 42 in sealing sliding fit with the fixing portion 41, the expansion portion 42 is sleeved on the pressure regulating tube 1 and in sealing sliding fit with the pressure regulating tube 1, and a tightening spring 10 for driving the expansion portion 42 to move towards the fixing portion 41 is arranged between the expansion portion 42 and the pressure regulating tube 1. The outer wall of the telescopic part 42 is provided with pressure scales 11 arranged along the moving direction of the telescopic part, and the pressure scales 11 are formed by coating and fixing paint. The pressure regulating pipe 1 is sleeved with a limit nut 12 in threaded connection with the pressure regulating pipe, one end of the abutting spring 10 abuts against the limit nut 12, and the other end abuts against the telescopic part 42. The force-releasing spring 72 and the connecting ring 71 and the force-releasing spring 72 and the pressure regulating pipe 1 can be detachably and fixedly connected, specifically, a bolt fixedly arranged at the end of the force-releasing spring 72 and a nut in threaded connection with the bolt are fixedly arranged, and the bolt penetrates through the connecting ring 71 or the pressure regulating pipe 1 and is in threaded connection with the nut. The fixing portion 41 is formed by at least two fixing plates which are in sealing splicing, and adjacent fixing plates are fixed through bolts and nuts matched with flanges, so that the force-removing spring 72 can be replaced conveniently.

An emergency discharge opening 13 is formed in the flow inlet section 1.1, a sealing cover 14 located on the outer side is arranged on the emergency discharge opening 13, a pull rod 15 penetrating through the flow inlet section 1.1 is connected to the sealing cover 14, the pull rod 15 is in sealing sliding fit with the flow inlet section 1.1, a limit pin 16 is inserted into the pull rod 15, a connecting rod 17 is fixedly connected to the expansion portion 42, and the expansion portion 42 moves back to the fixing portion 41 to drive the limit pin 16 to be separated from the pull rod 15 through the connecting rod 17.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A valve with pressure regulating device which characterized in that: comprises a valve body (18), a valve cover (19) arranged on the valve body (18), a valve rod (20) arranged on the valve cover (19) and extending into the valve body (18), an opening and closing piece (21) arranged on the valve rod (20) and a pressure regulating pipe (1) connected with the valve body (18), the pressure regulating pipe (1) comprises an inflow section (1.1), a pressure regulating section (1.2) and an outflow section (1.3) which are connected in sequence, a plurality of drainage plates (2) are arranged along the axis of the pressure regulating section (1.2) and a circulation channel is formed between the drainage plates (2), a pressure regulating cavity (3) is formed between each drainage plate (2) and the inner wall of the pressure regulating section (1.2), and the drainage plate (2) guides a part of fluid medium to enter the pressure regulating cavity (3), an outer pipe (4) is arranged outside the pressure regulating pipe (1), a closed pressure relief cavity (5) is formed between the outer pipe (4) and the pressure regulating pipe (1), the pressure relief cavity (5) is communicated with each pressure regulating cavity (3) through an opening (6), pressure release chamber (5) and the section of effluenting (1.3) communicate with each other, every drainage plate (2) all set up along pressure regulating section (1.2) axis reciprocating sliding and are used for adjusting pressure regulating chamber (3) size, and are a plurality of be connected with between drainage plate (2) and unload power subassembly (7).

2. A valve having a pressure regulating device as claimed in claim 1, wherein: every pressure regulating chamber (3) are formed by being close to influent stream section (1.1) one side in every drainage plate (2), every trompil (6) extend along pressure regulating section (1.2) axis and form a rectangular shape, drainage plate (2) slide and set up in trompil (6) and be used for the size of synchronous regulation pressure regulating chamber (3) and trompil (6) intercommunication pressure regulating chamber (3) position, every one side of drainage plate (2) backpressure regulating chamber (3) is fixed to be provided with and covers trompil (6) and be located drainage plate (2) for baffle (8) of pressure regulating chamber (3) opposite side position, power of unloading subassembly (7) be located pressure relief chamber (5).

3. A valve having a pressure regulating device as claimed in claim 2, wherein: the circulation passageway is including forming in discharge orifice (9) of every drainage plate (2), and is a plurality of discharge orifice (9) reduce the setting gradually along the flow direction of fluid medium, every drainage plate (2) are for surrounding the annular and the annular inner circle formation that set up around pressure regulating section (1.2) centre of a circle.

4. A valve having a pressure regulating device as claimed in claim 3, wherein: the force unloading assembly (7) comprises a plurality of connecting rings (71) and a plurality of force unloading springs (72), wherein the connecting rings (71) are fixedly connected with the drainage plates (2), the connecting rings (71) correspond to the drainage plates (2) one to one, the connecting rings (71) are connected through the force unloading springs (72), and the last connecting ring (71) is connected with the pressure regulating pipe (1) through the force unloading springs (72).

5. The valve with the pressure regulating device according to claim 4, wherein: the outer tube (4) is including fixed portion (41) that sets up in pressure regulating pipe (1) and with fixed portion (41) sealed sliding fit's pars contractilis (42), pars contractilis (42) cover locate pressure regulating pipe (1) and with it sealed sliding fit, be equipped with between pars contractilis (42) and pressure regulating pipe (1) and drive pars contractilis (10) that pars contractilis (42) moved to fixed portion (41).

6. The valve with the pressure regulating device according to claim 5, wherein: the outer wall of the telescopic part (42) is provided with pressure scales (11) which are arranged along the movement direction of the telescopic part.

7. The valve with the pressure regulating device according to claim 5, wherein: the pressure regulating pipe comprises a limiting nut (12) which is sleeved on the pressure regulating pipe (1) and in threaded connection with the pressure regulating pipe, one end of the abutting spring (10) abuts against the limiting nut (12), the other end of the abutting spring abuts against the telescopic portion (42), and the force unloading spring (72) and the connecting ring (71) and the force unloading spring (72) and the pressure regulating pipe (1) can be fixedly connected in a detachable mode.

8. The valve with the pressure regulating device according to claim 5, wherein: be equipped with urgent escape orifice (13) on influent stream section (1.1), be equipped with closing cap (14) on urgent escape orifice (13), be connected with pull rod (15) of wearing out influent stream section (1.1) on closing cap (14), insert on pull rod (15) and influent stream section (1.1) sealed cooperation and pull rod (15) and be equipped with spacer pin (16), fixedly connected with connecting rod (17) on expansion part (42), expansion part (42) move to fixed part (41) dorsad and come to drive spacer pin (16) and pull rod (15) separation through connecting rod (17).