CN210087999U - Double-balance type corrugated pipe pressure reducing valve - Google Patents
Double-balance type corrugated pipe pressure reducing valve Download PDFInfo
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- CN210087999U CN210087999U CN201920110277.8U CN201920110277U CN210087999U CN 210087999 U CN210087999 U CN 210087999U CN 201920110277 U CN201920110277 U CN 201920110277U CN 210087999 U CN210087999 U CN 210087999U
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- 230000001603 reducing effect Effects 0.000 title claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 10
- 230000001154 acute effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a double balance formula bellows relief pressure valve, including the valve gap, go up the valve rod, lower valve rod, the bellows, the valve clack, the disk seat, the control chamber in valve body and the valve body, entrance and outlet chamber, lower valve rod is worn to arrange in entrance and outlet chamber down, the valve clack is fixed to be set up on the lower valve rod in the outlet chamber below the disk seat, the bellows sets up in last valve rod bottom, the bellows is including the body of isolated control chamber and entrance, pressure-bearing platform and seal base, pressure-bearing platform fixed mounting is in last valve rod and lower valve rod junction, seal base is fixed in on the valve body. The traditional corrugated pipe pressure reducing valve structural design is overturned, the opening degree of the valve clack and the valve seat is adjusted in a two-way positioning mode by utilizing the pressure of a medium on the corrugated pipe and the valve clack, so that the pressure reducing effect is achieved, various defects of non-pressure reduction, non-ventilation and the like caused by impurity intrusion of the pressure reducing valve in a pipeline are overcome, the outlet pressure of the pressure reducing valve is more stable, the maintenance rate of the valve is reduced, and the service life of the pressure reducing valve is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the valve and specifically relates to a relief pressure valve.
Background
The pressure reducing valve can be applied to industries such as electric power, petroleum, metallurgy, food, textile printing and dyeing, chemical industry and medicine, and has the main functions of reducing the inlet pressure to a certain required outlet pressure and automatically keeping the outlet pressure stable by means of the energy of a medium. At present, pressure reducing valves appearing in the market and on data have different structures and obvious defects, such as poor pressure stabilizing performance of a pressure regulating spring type pressure reducing valve, steam non-ventilation and pressure non-reduction phenomena caused by blockage of a piston type steam pressure reducing valve or expansion and contraction, and serious defects, such as poor performance, short service life and the like caused by the defect of structural design of a direct-acting corrugated pipe pressure reducing valve and insufficient corrugated pipe compression space, so that the pressure reducing valves are staggered and cause certain troubles when being used by users. In particular to a corrugated pipe pressure reducing valve, the Chinese patent number CN200910034922.3, the date of granted bulletin is 2011, 2 and 9 days, and the name of the utility model is: the utility model provides a formula of relying on oneself bellows pressure transmission relief pressure valve, its structure sets up the disk seat in the valve body, arranges the valve clack that is used for blocking the medium circulation in the disk seat top, and the valve clack is connected at the lower extreme of lower valve rod, and the bellows is connected to lower valve rod upper end, and the medium advances by low-altitude, and the medium directly strikes the valve clack, easily causes the decompression unstable, and the valve clack reaction is dull.
Disclosure of Invention
The utility model aims at: in order to overcome the defects of the prior art, the utility model provides a two balanced type bellows relief pressure valves that outlet pressure is steady, the structure is balanced, long service life.
The technical scheme of the utility model: including valve gap, last valve stem, lower valve stem, bellows, valve clack, disk seat, valve body and control chamber, entrance chamber and export chamber in the valve body, go up the valve stem and wear to arrange in valve body and valve gap and go up the valve stem and arrange with lower valve stem is coaxial, set up the disk seat between entrance chamber and the export chamber, the valve gap is installed on the valve body, is provided with pressure regulating spring, pressure regulating spring upper berth in the valve gap, piston and cylinder liner, pressure regulating spring sets up above the piston and sets up with the piston counterbalance, the piston sets up in control chamber top and with last valve stem fixed connection, the piston overcoat has interior cylinder liner, cylinder liner fixed mounting is on the valve gap and overcoat is on the piston outer peripheral face, and with piston sliding fit, pressure regulating spring upper berth sets up above pressure regulating spring and sets up with pressure regulating spring counterbalance, the pressure regulating bolt that still wears to offset with pressure regulating spring upper berth on the valve gap, the lower valve body penetrates through the inlet cavity and the outlet cavity, the valve clack is fixedly arranged on the lower valve rod in the outlet cavity below the valve seat, the corrugated pipe is arranged at the bottom of the upper valve rod and comprises a pipe body, a pressure bearing table and a sealing base, the pipe body is isolated from the control cavity and the inlet cavity, the pressure bearing table is fixedly arranged at the joint of the upper valve rod and the lower valve rod, and the sealing base is fixed on the valve body.
By adopting the technical scheme, the piston structure of the piston type pressure reducing valve and the pressure regulating spring structure of the pressure regulating spring type pressure reducing valve are replaced by the bellows, the bellows can absorb the axial, transverse and angular thermal deformation of the valve rod, so that the pressure reducing valve has the characteristic of free axial movement of the valve rod, and a double-balance structure is adopted, namely, a medium enters from an inlet cavity and generates pressure on the bellows and the valve clack at the same time, so that mutually balanced acting force is generated; the traditional corrugated pipe pressure reducing valve structural design is overturned, the pressure of a medium to the corrugated pipe and the valve clack is utilized, the opening degree of the valve clack and the valve seat is adjusted in a two-way positioning mode, the pressure reducing effect is achieved, various defects of non-pressure reduction, non-ventilation and the like caused by impurity intrusion of the pressure reducing valve in a pipeline are overcome, the outlet pressure of the pressure reducing valve is more stable, the structure is more balanced and stable, the science and the reasonable are achieved, the maintenance rate of the valve is reduced, and the service life of the pressure.
The utility model discloses a further setting: the corrugated pipe is set as a welding corrugated pipe, and the section of the pipe body is in a wave shape of an acute triangle.
By adopting the further arrangement, the tube body with the acute-angle triangular wavy cross section has high reaction sensitivity and good compression performance, and the pressure loss of the corrugated tube is reduced by 80 percent, so that the pressure stability of the outlet cavity is improved.
The utility model discloses a further setting again: a pressure pipe is connected between the outlet cavity and the control cavity, and a heat insulation sleeve which is coaxially arranged with the upper valve rod is fixedly installed at the outlet of the pressure pipe in the control cavity.
Adopt above-mentioned further setting again, install the radiation shield additional, hinder the direct rush-in control intracavity of thermal current, reduce the control chamber temperature of valve, avoid sealing washer heating temperature too high, improve the life of sealing washer.
The utility model discloses a still further set up: the valve body comprises a valve body, a middle cover and a bottom cover, the bottom cover is fixedly connected below the valve body, and the middle cover is fixedly arranged between the valve body and the valve cover.
By adopting the above further arrangement, the split type structural design is adopted, the structure is compact, the installation of internal parts is convenient, the maintenance is simple and convenient, and the manufacture is convenient.
The utility model discloses a still further set up: the periphery of the corrugated pipe is provided with a corrugated pipe sleeve sleeved in the valve body, and the sealing base is clamped and fixed between the corrugated pipe sleeve and the middle cover.
By adopting the above further arrangement, the sealing base is clamped and fixed by the corrugated pipe sleeve and the middle cover, and the corrugated pipe is very convenient and reliable to disassemble, assemble, fix and position.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the present invention at A in FIG. 1;
the pressure regulating valve comprises a valve cover 1, an upper valve rod 2, a lower valve rod 3, a corrugated pipe 4, a valve clack 5, a valve seat 6, a valve body 7, a control cavity 71, an inlet cavity 72, an outlet cavity 73, a valve body 74, a middle cover 75, a bottom cover 76, a pressure regulating spring 11, a pressure regulating spring upper seat 12, a piston 13, a cylinder sleeve 14, a pressure regulating bolt 15, a pipe body 41, a pressure bearing table 42, a sealing base 43, a corrugated pipe sleeve 44, a pressure guide pipe 8 and a heat insulation sleeve 711.
Detailed Description
As shown in fig. 1 and 2, the double-balanced type bellows pressure reducing valve includes a valve cover 1, an upper valve rod 2, a lower valve rod 3, a bellows 4, a valve flap 5, a valve seat 6, a valve body 7, and a control cavity 71, an inlet cavity 72, and an outlet cavity 73 in the valve body 7, wherein the upper valve rod 2 is inserted in the valve body 7 and the valve cover 1, the upper valve rod 2 and the lower valve rod 3 are coaxially arranged, the valve seat 6 is arranged between the inlet cavity 72 and the outlet cavity 73, the valve cover 1 is installed on the valve body 7, a pressure regulating spring 11, a pressure regulating spring upper seat 12, a piston 13, and a cylinder sleeve 14 are arranged in the valve cover 1, the pressure regulating spring 11 is arranged above the piston 13 and is abutted against the piston 13, the piston 13 is arranged at the top of the control cavity 71 and is fixedly connected with the upper valve rod 2, the piston 13 is externally sleeved with the internal cylinder sleeve 14, the, and with the cooperation of sliding of piston 13, pressure regulating spring upper seat 12 sets up in pressure regulating spring 11 top and offsets the setting with pressure regulating spring 11, the pressure regulating bolt 15 that offsets with pressure regulating spring upper seat 12 still has worn to have put on the valve gap 1, lower valve body 3 wears to arrange in entrance chamber 72 and outlet chamber 73, valve clack 5 is fixed to be set up on lower valve rod 3 in 6 below outlet chamber 73 of disk seat, bellows 4 sets up in last valve rod 2 bottom, bellows 4 is including body 41, pressure-bearing platform 42 and the sealing base 43 of isolated control chamber 71 and entrance chamber 72, pressure-bearing platform 42 fixed mounting is in last valve rod 2 and lower valve rod 3 junction, sealing base 43 is fixed in on the valve body 7. The top of the upper valve rod 2 is arranged in the valve cover 1 and is fixedly connected with a piston 13 in the valve cover 1, the top surface of the piston 13 is abutted against a pressure regulating spring 11 in the valve cover and slides in a cylinder sleeve 14 sleeved in the valve cover 1, and the lower part of the upper valve rod 2 is connected with the corrugated pipe 4. The valve clack 5 is arranged below the valve seat 6, the valve clack 5 penetrates the lower valve rod 3 and is fixedly connected with the lower valve rod 3, when the upper valve rod 2 and the lower valve rod 3 slide up and down in the valve body 7 due to medium pressure, the valve clack 5 moves up and down in an opening and closing mode, medium enters from the inlet cavity 72, meanwhile, pressure is generated on the corrugated pipe 4 and the valve clack 5, and acting forces in opposite directions and balanced with each other are generated.
A pressure pipe 8 is connected between the outlet cavity 73 and the control cavity 71, a heat insulation sleeve 711 is fixedly installed at the outlet of the pressure pipe 8 in the control cavity 71, the heat insulation sleeve 711 and the upper valve rod 2 are installed in the coaxial direction, the heat insulation sleeve 711 sinks after impacting the outer wall of the heat insulation sleeve 711, heat flow flowing out of the pressure pipe 8 is mixed with fluid outside the heat insulation sleeve 711 to obtain certain cooling, and then the fluid inside the heat insulation sleeve 711 is gradually influenced. Similarly, in the process of the reverse flow of the pressure pipe 8, the peripheral heat of the heat insulation sleeve is discharged from the pressure pipe firstly, so that the medium temperature in the control cavity is discharged from high to low.
The valve body 7 comprises a valve body 74, a middle cover 75 and a bottom cover 76, the bottom cover 76 is in threaded connection with the lower portion of the valve body 74, the middle cover 75 is fixedly arranged between the valve body 74 and the valve cover 1, and the valve body 74 and the middle cover 75, the valve body 74 and the bottom cover 76 and the middle cover 75 and the valve cover 1 are in sealing connection.
The periphery of the corrugated pipe 4 is provided with a corrugated pipe sleeve 44 sleeved in the valve body 74, the sealing base 43 is clamped and fixed between the corrugated pipe sleeve 44 and the middle cover 75, the middle cover 75 is separated from the valve body 74 when the corrugated pipe 4 is dismounted, the corrugated pipe 4 can be dismounted or mounted, the sealing base 43 is abutted between the corrugated pipe sleeve 4 and the middle cover 75, and a sealing washer is additionally arranged to increase the sealing performance.
The utility model discloses a theory of operation: the medium is decompressed by the valve seat 6 and the valve clack 5 through the inlet pressure P1 of the valve body 7 which is high in inlet and low in outlet, and then becomes the outlet pressure P2, and the pressure regulating bolt 15 is preset with the required set value P. The medium enters the inlet chamber and at the same time applies pressure to the bellows 4 and the valve seat 6, and the valve flap 5 opens or closes due to the pressure of the outlet medium. When the inlet pressure P1 is increased, the acting force on the corrugated pipe 4 and the valve clack 5 is also increased at the same time, at the moment, the pressure of the compressed corrugated pipe 4 is equal to the acting force of the valve clack 5, so that the stability of the outlet pressure P2 is ensured; similarly, when the inlet pressure P1 decreases, the acting force on the bellows 4 and the valve flap 5 also decreases, and the pressure of the bellows 4 is equal to the acting force of the valve flap 5, thereby ensuring the stability of the outlet pressure P2; thus, the value of the outlet pressure P2 does not substantially change when the inlet pressure fluctuations do not exceed the pressure reduction ratio of 6: 1. When the outlet pressure value needs to be adjusted, the pressure adjusting bolt 15 can be adjusted to a required set value. Further, the outlet pressure may be fed back to the control chamber 71 through the pressure guide pipe 8 to be adjusted. When the outlet pressure P2 is greater than the set value P, the fluid in the outlet cavity 73 is input into the control cavity 71 through the pressure guide pipe 8, the pressure in the control cavity 71 is increased and exceeds the set value P of the pressure regulating spring 11, the piston 13 moves upwards in the cylinder sleeve 14, the valve clack 5 is opened and closed to be smaller, the flow resistance is increased, and the outlet pressure P2 is reduced to the set value P; similarly, when the outlet pressure P2 is lower than the set value P, the valve flap 5 opens and closes in the opposite direction to the above, and the outlet pressure P2 rises to the set value P. The utility model discloses a relief pressure valve is through adjusting pressure regulating bolt 15, reduces the export pressure of import pressure to a certain needs to rely on the energy of medium itself, make the automatic equilibrium stability that keeps of export pressure, thereby reach the purpose of decompression. Because the utility model discloses a bellows 4 has solved the steam relief pressure valve and has blockked up the expend with heat and contract with cold problem of pressure guide hole and piston at impurity as balanced component to the easy maintenance and the life of relief pressure valve have been improved greatly.
Claims (5)
1. A double-balance type corrugated pipe pressure reducing valve comprises a valve cover, an upper valve rod, a lower valve rod, a corrugated pipe, a valve clack, a valve seat, a valve body and a control cavity, an inlet cavity and an outlet cavity in the valve body, wherein the upper valve rod penetrates through the valve body and the valve cover, the upper valve rod and the lower valve rod are coaxially arranged, the valve seat is arranged between the inlet cavity and the outlet cavity, the valve cover is installed on the valve body, a pressure regulating spring, an upper pressure regulating spring seat, a piston and a cylinder sleeve are arranged in the valve cover, the pressure regulating spring is arranged above the piston and is abutted against the piston, the piston is arranged at the top of the control cavity and is fixedly connected with the upper valve rod, the cylinder sleeve is sleeved outside the piston, the cylinder sleeve is fixedly installed in the valve cover and is sleeved outside the outer peripheral surface of the piston and is in sliding fit with the piston, the upper pressure regulating spring seat is arranged above the pressure regulating spring and is, the method is characterized in that: the lower valve rod penetrates through the inlet cavity and the outlet cavity, the valve clack is fixedly arranged on the lower valve rod in the outlet cavity below the valve seat, the corrugated pipe is arranged at the bottom of the upper valve rod and comprises a pipe body, a pressure bearing table and a sealing base, the pipe body is used for isolating the control cavity and the inlet cavity, the pressure bearing table is fixedly arranged at the joint of the upper valve rod and the lower valve rod, and the sealing base is fixed on the valve body.
2. The dual-balanced bellows pressure relief valve of claim 1, wherein: the corrugated pipe is a welded corrugated pipe, and the cross section of the pipe body is in a wave shape of an acute triangle.
3. The dual-balanced bellows pressure relief valve of claim 2, wherein: and a pressure guide pipe is connected between the outlet cavity and the control cavity, and a heat insulation sleeve coaxially arranged with the upper valve rod is fixedly installed at the outlet of the pressure guide pipe in the control cavity.
4. The dual-balanced bellows pressure relief valve of claim 1 or 3, wherein: the valve body comprises a valve body, a middle cover and a bottom cover, the bottom cover is fixedly connected to the lower portion of the valve body, and the middle cover is fixedly arranged between the valve body and the valve cover.
5. The dual-balanced bellows pressure relief valve of claim 4, wherein: the periphery of the corrugated pipe is provided with a corrugated pipe sleeve sleeved in the valve body, and the sealing base is clamped and fixed between the corrugated pipe sleeve and the middle cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920110277.8U CN210087999U (en) | 2019-01-23 | 2019-01-23 | Double-balance type corrugated pipe pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920110277.8U CN210087999U (en) | 2019-01-23 | 2019-01-23 | Double-balance type corrugated pipe pressure reducing valve |
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| Publication Number | Publication Date |
|---|---|
| CN210087999U true CN210087999U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920110277.8U Withdrawn - After Issue CN210087999U (en) | 2019-01-23 | 2019-01-23 | Double-balance type corrugated pipe pressure reducing valve |
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| Country | Link |
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| CN (1) | CN210087999U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751419A (en) * | 2019-01-23 | 2019-05-14 | 永嘉县瑞隆阀门有限公司 | Double-balance bellows pressure reducing valve |
| CN114791051A (en) * | 2022-04-26 | 2022-07-26 | 浙江三花智能控制股份有限公司 | Throttle valve device |
| JP7376464B2 (en) | 2020-12-21 | 2023-11-08 | 株式会社鷺宮製作所 | pressure regulating valve |
-
2019
- 2019-01-23 CN CN201920110277.8U patent/CN210087999U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751419A (en) * | 2019-01-23 | 2019-05-14 | 永嘉县瑞隆阀门有限公司 | Double-balance bellows pressure reducing valve |
| CN109751419B (en) * | 2019-01-23 | 2024-02-13 | 浙江瑞隆流体控制有限公司 | Double-balance type corrugated pipe pressure reducing valve |
| JP7376464B2 (en) | 2020-12-21 | 2023-11-08 | 株式会社鷺宮製作所 | pressure regulating valve |
| CN114791051A (en) * | 2022-04-26 | 2022-07-26 | 浙江三花智能控制股份有限公司 | Throttle valve device |
| CN114791051B (en) * | 2022-04-26 | 2023-12-26 | 浙江三花智能控制股份有限公司 | Throttle valve device |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200218 Effective date of abandoning: 20240213 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200218 Effective date of abandoning: 20240213 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |