CN210890162U

CN210890162U - Low-temperature pressure reduction regulating valve

Info

Publication number: CN210890162U
Application number: CN201921717425.9U
Authority: CN
Inventors: 李金梁; 郭世卫; 文国伍
Original assignee: Shanghai Tingben Fluid Control Co ltd
Current assignee: Shanghai Tingben Fluid Control Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-06-30
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a low temperature decompression governing valve relates to governing valve technical field, specifically is a low temperature decompression governing valve, including governing valve body, governing valve gap, the influent stream mouth has been seted up to one side of governing valve body, the outfall has been seted up to the opposite side of governing valve body. This low temperature step-down governing valve, through inner chamber installation reset spring and the bracing piece in the chamber of flow equalizing, cooperate the supporting sleeve to cup joint lower valve rod simultaneously, and then support lower valve rod, the problem that the lower valve rod of having avoided traditional low temperature step-down governing valve inclines to warp after long-term atress and leads to low temperature step-down governing valve to damage, the stability and the life of this low temperature step-down governing valve have been improved, simultaneously through adjusting the cooperation that leaks the mouth of a river circle and adjust the mouth of a river, when the case rises, the size of the position regulation flow of being convenient for of mouth of a river and case is leaked in the utilization regulation, the practicality of this low temperature step.

Description

Low-temperature pressure reduction regulating valve

Technical Field

The utility model relates to a governing valve technical field specifically is a low temperature step-down governing valve.

Background

In the automatic control of modern plants, regulating valves play a very important role, the production of these plants depends on the correct distribution and control of the flowing medium, these controls, whether the exchange of energy, the reduction of pressure or the simple container charging, all need some final control elements to accomplish, regulating valves, also known as control valves, in the field of industrial automation process control, by receiving the control signal output by the regulating control unit, the final control elements to change the process parameters of medium flow, pressure, temperature, liquid level, etc. by means of power operation, generally consist of actuators and valves, the regulating valve used in low temperature, deep cold environment is a low temperature pressure reducing regulating valve, the low temperature pressure reducing regulating valve is one of many valve types, the existing low temperature pressure reducing regulating valve should be seriously deformed after the lower valve stem is stressed for a long time, resulting in the shortening of the service life of the regulating valve, meanwhile, the existing low-temperature pressure reduction regulating valve has a small control range on the liquid flow, and cannot meet the requirements of the existing low-temperature pressure reduction regulating valve, so that the low-temperature pressure reduction regulating valve is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a low temperature step-down governing valve, it is not enough to prior art, the utility model provides a low temperature step-down governing valve possesses stability height, long service life, and the big advantage of regulation flow range has solved the lower valve rod that proposes among the above-mentioned background art and has warp seriously after long-term atress, leads to governing valve life to shorten, and the low temperature step-down governing valve that has now simultaneously is carrying out control range less to liquid flow, does not reach the problem of the requirement of using today.

For stability height more than realizing, long service life, the big purpose of regulation flow range, the utility model discloses a following technical scheme realizes: the utility model provides a low temperature step-down governing valve, includes governing valve body, governing valve gap, the influent stream mouth has been seted up to one side of governing valve body, the outfall has been seted up to the opposite side of governing valve body, the both sides fixedly connected with of governing valve body is located the influent stream mouth and the flange of outfall one end, the equal flow chamber has been seted up to the inner chamber of governing valve body, the middle part activity of governing valve body has cup jointed down the valve rod, there is the governing valve gap at the top of governing valve body through fixing bolt threaded connection.

Preferably, the bottom of the inner cavity of the equal flow cavity extends to one end of the inflow opening, one side of the inner cavity of the equal flow cavity extends to one end of the outflow opening, the top fixedly connected with reset spring of the inner cavity of the equal flow cavity, the two sides of the inner cavity of the equal flow cavity are provided with sliding clamping grooves, the bottom fixedly mounted of the inner cavity of the equal flow cavity is provided with an adjusting water leakage ring, the surface of the adjusting water leakage ring is provided with an adjusting water leakage opening, and the bottom fixedly connected with of the inner cavity of the equal flow cavity is located on a sealing ring below the adjusting water leakage ring.

Preferably, the inner chamber joint in slip joint groove has the bracing piece, the surface of bracing piece extends to reset spring's one end, the bottom fixedly connected with acoustical panel of bracing piece, the one end fixedly connected with supporting sleeve of bracing piece, supporting sleeve's inner chamber activity cover connects to the surface of lower valve rod.

Preferably, a valve core is fixedly mounted at the bottom of the lower valve rod, the valve core extends into the sealing ring, the top of the lower valve rod extends into an inner cavity of the valve cover of the regulating valve, a connecting plate is fixedly connected to the top of the lower valve rod, and the surface of the connecting plate extends to the bottom of the upper valve rod.

Preferably, the inner cavity of the regulating valve cover is fixedly connected with a pressure reducing spring, the inner cavity of the regulating valve cover is in threaded sleeve connection with an upper valve rod, the top of the upper valve rod is fixedly connected with a rotating disc, one end of the upper valve rod is in threaded sleeve connection with a fixing nut, and the fixing nut is located at the top of the regulating valve cover.

Preferably, pressure reducing spring's one end extends to the surface of connecting plate, pressure reducing spring's the fixed cover in inner chamber has connect a socket joint section of thick bamboo, the width of socket joint section of thick bamboo is the same with pressure reducing spring's diameter, the inner chamber activity of socket joint section of thick bamboo cup joints the surface of supreme valve rod and lower valve rod, the sealed pad that is located valve rod surface down is cup jointed to the bottom of governing valve gap inner chamber.

The utility model provides a low temperature step-down governing valve possesses following beneficial effect:

1. this low temperature step-down governing valve, through inner chamber installation reset spring and the bracing piece in the chamber of flow equalizing, cooperate the supporting sleeve to cup joint lower valve rod simultaneously, and then support lower valve rod, the problem that the lower valve rod of having avoided traditional low temperature step-down governing valve inclines to warp after long-term atress and leads to low temperature step-down governing valve to damage, the stability and the life of this low temperature step-down governing valve have been improved, simultaneously through adjusting the cooperation that leaks the mouth of a river circle and adjust the mouth of a river, when the case rises, the size of the position regulation flow of being convenient for of mouth of a river and case is leaked in the utilization regulation, the practicality of this low temperature step.

2. This low temperature decompression governing valve uses through the cooperation of a relief spring and a cover section of thick bamboo, cup joints last valve rod and lower valve rod, utilizes the connecting plate to connect relief spring simultaneously, can avoid the valve not hard up through the effectual power that slows down lower valve rod and last valve rod and bear of relief spring when opening the valve and close, has improved this low temperature decompression governing valve's stability.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is a schematic structural view of the adjustable water-leakage ring of the present invention;

fig. 3 is a schematic structural view of the front side of the present invention.

In the figure: 1. a valve body of the regulating valve; 2. a valve core; 3. adjusting a water leakage port; 4. a seal ring; 5. a connecting flange; 6. a flow inlet; 7. a flow equalizing cavity; 8. adjusting a water leakage ring; 9. a support bar; 10. fixing the bolt; 11. a lower valve stem; 12. a relief spring; 13. an upper valve stem; 14. rotating the disc; 15. fixing a nut; 16. sleeving a sleeve; 17. a connecting plate; 18. a gasket; 19. a return spring; 20. a support sleeve; 21. a sliding clamping groove; 22. a sound-absorbing panel; 23. an outflow port; 24. the valve cover of the valve is adjusted.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 3, the present invention provides a technical solution: a low-temperature pressure-reducing regulating valve comprises a regulating valve body 1 and a regulating valve cover 24, wherein one side of the regulating valve body 1 is provided with a flow inlet 6, the other side of the regulating valve body 1 is provided with a flow outlet 23, two sides of the regulating valve body 1 are fixedly connected with connecting flanges 5 positioned at one ends of the flow inlet 6 and the flow outlet 23, an inner cavity of the regulating valve body 1 is provided with a flow equalizing cavity 7, the bottom of the inner cavity of the flow equalizing cavity 7 extends to one end of the flow inlet 6, one side of the inner cavity of the flow equalizing cavity 7 extends to one end of the flow outlet 23, the top of the inner cavity of the flow equalizing cavity 7 is fixedly connected with a reset spring 19, two sides of the inner cavity of the flow equalizing cavity 7 are provided with sliding clamping grooves 21, an inner cavity of each sliding clamping groove 21 is clamped with a supporting rod 9, the surface of the supporting rod 9 extends to one end of the reset, the inner cavity of the supporting sleeve 20 is movably sleeved on the surface of the lower valve rod 11, the lower valve rod 11 can be supported by matching the supporting sleeve 20 and the supporting rod 9, the problem that the bottom of the lower valve rod 11 is deformed is avoided, meanwhile, the supporting rod 9 can slide up and down by utilizing the sliding clamping groove 21 without influencing the normal work of the lower valve rod 11, meanwhile, the supporting rod 9 is supported by the reset spring 19, the supporting rod 9 can be restored to the original position after the lower valve rod 11 moves, the stability and the practicability of the low-temperature pressure reduction regulating valve are improved, meanwhile, the noise generated by impacting the supporting rod 9 by high-pressure liquid can be avoided by utilizing the sound-absorbing plate 22, the bottom of the inner cavity of the flow-equalizing cavity 7 is fixedly provided with the regulating water leakage ring 8, the surface of the regulating water leakage ring 8 is provided with the regulating water leakage port 3, the bottom of the inner cavity of, the sealing performance of the low-temperature pressure-reducing regulating valve can be ensured through the sealing ring 4, the positions of the regulating water leakage port 3 and the valve core 2 are utilized, the regulating water leakage port 3 is exposed through the height of the regulating valve core 2, liquid can pass through the regulating water leakage port, the flow can be regulated, when the valve core 2 is positioned above the regulating water leakage ring 8, the flow is maximum, the practicability of the low-temperature pressure-reducing regulating valve is improved, the middle part of the regulating valve body 1 is movably sleeved with the lower valve rod 11, the valve core 2 is fixedly installed at the bottom of the lower valve rod 11, the valve core 2 extends to the inside of the sealing ring 4, the top of the lower valve rod 11 extends to the inner cavity of the regulating valve cover 24, the top of the lower valve rod 11 is fixedly connected with the connecting plate 17, the surface of the connecting plate 17 extends to the bottom of the upper valve rod 13, the upper valve rod 13 and the lower, the positions of an upper valve rod 13 and a lower valve rod 11 can be limited, the upper valve rod 13 and the lower valve rod 11 are prevented from being damaged, the top of a regulating valve body 1 is in threaded connection with a regulating valve bonnet 24 through a fixing bolt 10, the inner cavity of the regulating valve bonnet 24 is fixedly connected with a pressure reducing spring 12, the inner cavity of the regulating valve bonnet 24 is in threaded sleeve connection with the upper valve rod 13, the top of the upper valve rod 13 is fixedly connected with a rotating disc 14, one end of the upper valve rod 13 is in threaded sleeve connection with a fixing nut 15, the fixing nut 15 is located at the top of the regulating valve bonnet 24, one end of the pressure reducing spring 12 extends to the surface of a connecting plate 17, the inner cavity of the pressure reducing spring 12 is fixedly sleeved with a sleeve 16, the width of the sleeve 16 is the same as the diameter of the pressure reducing spring 12, the inner cavity of the sleeve 16 is movably sleeved on the surfaces of the upper, can seal the chamber 7 that flow equalizes through sealed use of 18 that fills up, avoid the liquid in the chamber 7 inner chamber that flows equally to leak the inner chamber of governing valve gap 24, the leakproofness of this low temperature step-down governing valve has been improved, utilize decompression spring 12 and the cooperation of cup joint section of thick bamboo 16 simultaneously, not only can support lower valve rod 11 and the surface of last valve rod 13, avoid going up valve rod 13 and lower valve rod 11 deformation, utilize decompression spring 12 and connecting plate 17 can effectually slow down the effort that lower valve rod 11 and last valve rod 13 received simultaneously.

In summary, when the low-temperature pressure-reducing regulating valve is used, firstly, the regulating valve body 1 is connected with the regulating valve bonnet 24 by the fixing bolt 10, after the regulating valve body 1 is fixed, a liquid conveying pipeline to be regulated is connected through the connecting flanges 5 on two sides of the regulating valve body 1, attention needs to be paid to enabling the bottom of the regulating valve body 1 to be right opposite to the ground, after the installation is completed, the rotating disc 14 is held to rotate, the upper valve rod 13 is outwards regulated, the regulation is carried out according to the required flow, when the regulating valve is closed, the rotating disc 14 is rotated, the upper valve rod 13 is downwards regulated, and the valve is closed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a low temperature step-down governing valve, includes governing valve body (1), governing valve gap (24), its characterized in that: inlet (6) have been seted up to one side of governing valve body (1), outlet (23) have been seted up to the opposite side of governing valve body (1), the both sides fixedly connected with of governing valve body (1) is located inlet (6) and outlet (23) flange (5) of one end, equal flow chamber (7) have been seted up to the inner chamber of governing valve body (1), valve rod (11) down have been cup jointed in the middle part activity of governing valve body (1), there is governing valve gap (24) at the top of governing valve body (1) through fixing bolt (10) threaded connection.

2. The low temperature pressure reducing regulator valve according to claim 1, wherein: the bottom of equal flow chamber (7) inner chamber extends to the one end of influent stream mouth (6), one side of equal flow chamber (7) inner chamber extends to the one end of play flow mouth (23), the top fixedly connected with reset spring (19) of equal flow chamber (7) inner chamber, slip joint groove (21) have been seted up to the both sides of equal flow chamber (7) inner chamber, the bottom fixed mounting of equal flow chamber (7) inner chamber has regulation hourglass water ring (8), the surface of regulation hourglass water ring (8) has been seted up and has been adjusted mouth of a river (3), the bottom fixedly connected with of equal flow chamber (7) inner chamber is located sealing washer (4) of regulation hourglass water ring (8) below.

3. A low temperature pressure reducing regulator valve in accordance with claim 2, wherein: the inner chamber joint in slip joint groove (21) has bracing piece (9), the surface of bracing piece (9) extends to the one end of reset spring (19), the bottom fixedly connected with acoustical panel (22) of bracing piece (9), the one end fixedly connected with supporting sleeve (20) of bracing piece (9), the inner chamber activity cover of supporting sleeve (20) connects to the surface of lower valve rod (11).

4. The low temperature pressure reducing regulator valve according to claim 1, wherein: the bottom fixed mounting of lower valve rod (11) has case (2), case (2) extend to the inside of sealing washer (4), the top of lower valve rod (11) extends to the inner chamber of governing valve gap (24), the top fixedly connected with connecting plate (17) of lower valve rod (11), the surface of connecting plate (17) extends to the bottom of supreme valve rod (13).

5. The low temperature pressure reducing regulator valve according to claim 1, wherein: the inner chamber fixedly connected with relief spring (12) of governing valve gap (24), the inner chamber screw thread of governing valve gap (24) has cup jointed valve rod (13), the top fixedly connected with rolling disc (14) of going up valve rod (13), the one end screw thread of going up valve rod (13) has cup jointed fixation nut (15), and fixation nut (15) are located the top of governing valve gap (24).

6. The low temperature pressure reducing regulator valve according to claim 5, wherein: one end of the pressure reducing spring (12) extends to the surface of the connecting plate (17), the inner cavity of the pressure reducing spring (12) is fixedly sleeved with a sleeve barrel (16), the width of the sleeve barrel (16) is the same as the diameter of the pressure reducing spring (12), the inner cavity of the sleeve barrel (16) is movably sleeved with the surface of the upper valve rod (13) and the lower valve rod (11), and the bottom of the inner cavity of the regulating valve cover (24) is sleeved with a sealing gasket (18) positioned on the surface of the lower valve rod (11).