CN202327346U - High-pressure-difference pressure reducing valve - Google Patents
High-pressure-difference pressure reducing valve Download PDFInfo
- Publication number
- CN202327346U CN202327346U CN 201120452948 CN201120452948U CN202327346U CN 202327346 U CN202327346 U CN 202327346U CN 201120452948 CN201120452948 CN 201120452948 CN 201120452948 U CN201120452948 U CN 201120452948U CN 202327346 U CN202327346 U CN 202327346U
- Authority
- CN
- China
- Prior art keywords
- stuffing box
- packing
- valve body
- valve
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to a high-pressure-difference pressure reducing valve which is used for solving the problem that the production safety is not facilitated because the working condition of sealing packing materials in a valve body is difficult to grasp in time. The pressure reducing valve comprises a valve rod, packing boxes, sealing rings, packing material glands, valve body glands and the sealing packing materials, wherein the sealing rings are located below the valve body glands, the valve rod is located at the middle of the valve body glands, the packing boxes and the sealing packing materials are located between the valve rod and the valve body glands, the packing boxes are located above the sealing packing materials, and the packing material glands hold down the sealing packing materials at the lower ends of the packing material glands through the packing boxes. The pressure reducing valve further comprises a pressure acquiring pipe, a pressure measuring member and packing box sealing rings, wherein the pressure acquiring pipe is connected onto an opening in a sidewall of the valve body glands, the pressure measuring member is connected onto the pressure acquiring pipe, the packing box sealing rings are arranged on the packing boxes, a sealed cavity is formed in the valve body glands, so that the pressure change inside the valve body glands is effectively monitored, the working condition of the sealing packing materials is grasped, and then, corresponding measures are adopted in time.
Description
Technical field
The utility model relates to a kind of valve, relates in particular to a kind of High Pressure Difference reduction valve that can monitor the stuffing box packing working condition.
Background technique
In coal liquefaction craft; Coal slurry, hydrogen etc. get into high-temperature high-pressure separator through high temperature, reacted gas, liquid, solid three phase materials of condition of high voltage under catalyst action; Wherein the solid, liquid two-phase material of high-temperature high-pressure separator is discharged from its bottom, gets into follow-up low pressure piece-rate system through High Pressure Difference reduction valve decompression back.The High Pressure Difference reduction valve with pressure be 19MPa, solid liquid media more than 400 ℃ is decompressed to 0.1MPa.Reduction valve is worked under this HTHP, and the packing seal at valve rod place is leaked easily, causes the damage of equipment and the generation of security incident.Serious fire or personal injury accident can take place in its packing leaking; If can not in time successfully switch in addition one the tunnel, then might go here and there pressure, high pressure oil coal slurry string is destructive to middle low-pressure system to whole device mesolow equipment.In order to ensure the safety of production, not only require the form and the structure of sealing all higher reliability will be arranged, but also requirement can monitor the gland sealed working state at any time, so that the generation of the timely prevention accident that takes appropriate measures.Yet the stuffing box packing working condition is difficult to timely grasp in existing its valve body of High Pressure Difference reduction valve, is unfavorable for production safety.
The model utility content
In view of this, the purpose of the utility model is, a kind of High Pressure Difference reduction valve is provided, and is used to solve the interior stuffing box packing working condition of valve body and is difficult to timely grasp, is unfavorable for the problem of production safety.
For realizing above-mentioned purpose, the utility model is taked following design proposal:
A kind of High Pressure Difference reduction valve; Comprise valve rod, Gland, valve body gland, stuffing box, stuffing box packing and valve body, wherein, said valve body is positioned at valve body gland below; Said valve rod is positioned in the middle of the valve body gland; Said stuffing box and stuffing box packing are filled in the space between valve rod and the valve body gland, and said stuffing box is positioned at the top of stuffing box packing, and said Gland compresses the lower end stuffing box packing through stuffing box;
In addition, also comprise pressure pipe, load cell and packing box seal ring, the end connection of said pressure pipe is positioned at the perforate on the valve body gland sidewall, and the other end of said pressure pipe connects load cell, and said packing box seal ring is arranged on the stuffing box.
Preferably, said stuffing box comprises first stuffing box and second stuffing box, and said first stuffing box is positioned at second stuffing box top.
Preferably, said packing box seal ring comprises inner seal ring and outer seal ring, and said inner seal ring is between first stuffing box and valve rod, and said outer seal ring is between first stuffing box and valve body gland.
Preferably, the internal diameter of said inner seal ring is slightly less than the stuffing box internal diameter, and the external diameter of said outer seal ring is slightly larger than the stuffing box external diameter.
Preferably, the perforate on the said valve body gland sidewall is positioned at the below of packing box seal ring.
Preferably, said load cell is a pressure transducer.
Preferably, said stuffing box packing is graphite grazing filler or CFM, and number is eight.
Visible by above-mentioned technological scheme, this High Pressure Difference reduction valve of the utility model is set up the packing box seal ring on stuffing box; Thereby in the valve body gland, form Seal cage, perforate on the valve body gland, and connect the pressure pipe; Increase the side pressure element; So that monitor the variation in pressure in the valve body gland effectively, grasp the gland sealed working condition, thereby take appropriate measures in time.
Description of drawings
The High Pressure Difference reduction valve schematic representation that Fig. 1 provides for the utility model;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the schematic representation of first stuffing box and packing box seal ring among Fig. 1;
Fig. 4 is the schematic representation of stuffing box packing among Fig. 1.
Embodiment
Specify the utility model below in conjunction with accompanying drawing.
The utility model provides a kind of High Pressure Difference reduction valve in order to monitor the working condition of relief valve body stuffing box packing effectively.Fig. 1 is the schematic representation of this High Pressure Difference reduction valve, and what it was identical with existing technology is also to comprise valve rod 1, Gland 2, valve body gland 3, stuffing box, stuffing box packing 4 and valve body 5, and difference is also to comprise pressure pipe 6, load cell 7 and packing box seal ring 10.
Wherein, said valve rod 1 is used for the folding of control valve spool, is positioned in the middle of the valve body gland 3 and along its central axis direction to pass.In the valve using process; For preventing that the medium in the valve from leaking along valve rod 1; Be filled with stuffing box and stuffing box packing 4 in the space between valve rod 1 and valve body gland 3; Said stuffing box is positioned at the top of stuffing box packing 4, compresses through the Gland 2 on it, thereby makes stuffing box packing 4 sealed valve valve rods 1.Preferably, said stuffing box is set to two, is respectively first stuffing box 8 and second stuffing box 9, so that better sealed valve stem 1.As shown in Figure 4, preferably, said stuffing box packing 4 has eight, in the form of a ring, closely is nested in valve rod 1 outside, and its material can be selected graphite or graphite fiber for use, to adapt to the high-temperature work environment of valve.Said valve body 5 is positioned at the below of valve body gland 3, connects and support sealed valve body gland 3 through bolt.
As shown in Figures 2 and 3, said packing box seal ring 10 is positioned on the stuffing box, is specifically between first stuffing box 8 and second stuffing box 9, comprises inner seal ring 11 and outer seal ring 12.Said inner seal ring 11 is positioned at the inboard of stuffing box, is used for the sealing between stuffing box and the valve rod 1, and said outer seal ring 11 is positioned at the outside of stuffing box 8, is used for the sealing between stuffing box and the valve body gland 3.Wherein, the external diameter of said outer seal ring 12 is slightly larger than the stuffing box external diameter, and the internal diameter of said inner seal ring 11 is slightly less than the stuffing box internal diameter, so that form Seal cage between said packing box seal ring 10 and the valve body gland 3.
In order in time to grasp the working condition of stuffing box packing 4, the variation in pressure of Seal cage is provided with perforate in the monitoring valve body gland 3 on the sidewall of valve body gland 3, and said perforate is positioned at the below of packing box seal ring, and Seal cage is in communication with the outside.One end of said pressure pipe 6 is connected in this perforate, and its Placement can be welding, also can be to be threaded or other Placement.Said load cell 7 is connected on the other end of pressure pipe 6, and measures the interior pressure of Seal cage through pressure pipe 6.Wherein, said load cell 7 can be pressure gauge or pressure transducer, and in the present embodiment, said load cell is a pressure transducer.Control DSC went up and shows during said pressure transducer was sent to the pressure signal that records, and warning is set.In the present embodiment, alarming value is set to 0.2MPa and 1.0MPa.
Because valve is worked under High Pressure Difference, its stuffing box packing 4 is leaked easily.When said stuffing box packing 4 took place to leak, the medium in the valve can enter in the seal chamber of valve body gland 3 and 10 formation of packing box seal ring, is delivered to load cell 7 through pressure pipe 6.Through observing pressure-display or warning, can monitor the variation of valve rod 1 ambient pressure at any time, understand the working condition of stuffing box packing 4.When load cell 7 shows pressure less than 0.2MPa, show that stuffing box packing 4 working conditions are good; When load cell 7 shows that pressure is in 0.2MPa to 1.0MPa, show that stuffing box packing 4 has slight leakage, should send the staff to tighten Gland 2 in time this moment, compresses stuffing box packing 4 through stuffing box, to remove a hidden danger; When load cell 7 shows that pressure is higher than 1.0MPa; Show that stuffing box packing 4 reveals; The staff should prepare to switch to the subsequent use road use of this high pressure valve immediately; Pay close attention to the indication situation of load cell 7 simultaneously, prevent that stuffing box packing 4 further leakages from causing fire, device damage or personal injury accident.
Visible by the foregoing description, this High Pressure Difference reduction valve that the utility model provides is owing to be provided with the packing box seal ring on stuffing box; Thereby in the valve body gland, form Seal cage, and perforate on the valve body gland, the pressure pipe connected; Increase load cell; So that monitor the variation in pressure in the valve body gland effectively, grasp the gland sealed working condition, thereby take appropriate measures in time; For the staff wins the valuable processing time, avoid the generation of malignant fire accident, device damage and personal injury accident.
Claims (7)
1. High Pressure Difference reduction valve; Comprise valve rod, Gland, valve body gland, stuffing box, stuffing box packing and valve body, wherein, said valve body is positioned at valve body gland below; Said valve rod is positioned in the middle of the valve body gland; Said stuffing box and stuffing box packing are filled in the space between valve rod and the valve body gland, and said stuffing box is positioned at the top of stuffing box packing, and said Gland compresses the lower end stuffing box packing through stuffing box; It is characterized in that, also comprise pressure pipe, load cell and packing box seal ring, the end connection of said pressure pipe is positioned at the perforate on the valve body gland sidewall, and the other end of said pressure pipe connects load cell, and said packing box seal ring is arranged on the stuffing box.
2. reduction valve as claimed in claim 1 is characterized in that, said stuffing box comprises first stuffing box and second stuffing box, and said first stuffing box is positioned at second stuffing box top.
3. reduction valve as claimed in claim 2 is characterized in that, said packing box seal ring comprises inner seal ring and outer seal ring, and said inner seal ring is between first stuffing box and valve rod, and said outer seal ring is between first stuffing box and valve body gland.
4. reduction valve as claimed in claim 3 is characterized in that the internal diameter of said inner seal ring is slightly less than the stuffing box internal diameter, and the external diameter of said outer seal ring is slightly larger than the stuffing box external diameter.
5. reduction valve as claimed in claim 3 is characterized in that, the perforate on the said valve body gland sidewall is positioned at the below of packing box seal ring.
6. reduction valve as claimed in claim 1 is characterized in that, said load cell is a pressure transducer.
7. reduction valve as claimed in claim 1 is characterized in that, said stuffing box packing is graphite grazing filler or CFM, and number is eight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120452948 CN202327346U (en) | 2011-11-15 | 2011-11-15 | High-pressure-difference pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120452948 CN202327346U (en) | 2011-11-15 | 2011-11-15 | High-pressure-difference pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202327346U true CN202327346U (en) | 2012-07-11 |
Family
ID=46439325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120452948 Expired - Lifetime CN202327346U (en) | 2011-11-15 | 2011-11-15 | High-pressure-difference pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202327346U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748491A (en) * | 2012-07-22 | 2012-10-24 | 江苏金晟元特种阀门有限公司 | Intelligent monitoring maintenance-free electric gate valve |
| CN106033022A (en) * | 2016-05-16 | 2016-10-19 | 华东理工大学 | Pipe valve and detection device for leakage of medium at filler position thereof |
| CN110886868A (en) * | 2019-12-05 | 2020-03-17 | 良正阀门有限公司 | Low-torque self-checking ball-leakage valve |
| WO2021138546A1 (en) * | 2020-01-03 | 2021-07-08 | Bray International, Inc. | Valve with load cell |
| US11408451B2 (en) | 2018-10-12 | 2022-08-09 | Bray International, Inc. | Smart valve with integrated electronics |
-
2011
- 2011-11-15 CN CN 201120452948 patent/CN202327346U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748491A (en) * | 2012-07-22 | 2012-10-24 | 江苏金晟元特种阀门有限公司 | Intelligent monitoring maintenance-free electric gate valve |
| CN106033022A (en) * | 2016-05-16 | 2016-10-19 | 华东理工大学 | Pipe valve and detection device for leakage of medium at filler position thereof |
| US11408451B2 (en) | 2018-10-12 | 2022-08-09 | Bray International, Inc. | Smart valve with integrated electronics |
| CN110886868A (en) * | 2019-12-05 | 2020-03-17 | 良正阀门有限公司 | Low-torque self-checking ball-leakage valve |
| WO2021138546A1 (en) * | 2020-01-03 | 2021-07-08 | Bray International, Inc. | Valve with load cell |
| US12018772B2 (en) | 2020-01-03 | 2024-06-25 | Bray International, Inc. | Valve with load cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202327346U (en) | High-pressure-difference pressure reducing valve | |
| CN202081851U (en) | Polish rod sealing apparatus | |
| CN101813588B (en) | Pressure head device for loading normal triaxial rheology and testing acoustic emission under high confining pressure | |
| CN103674534A (en) | Metal-corrugated-pipe high-temperature and high-pressure fatigue life testing device | |
| CN202092842U (en) | Sleeve monitoring device | |
| CN103921914B (en) | Escape capsule Connection Release device | |
| CN104749039A (en) | Thin shell nested pressure test cabin device | |
| CN103633611A (en) | Electric penetrating sealing joint for low temperature glass package | |
| CN105945868B (en) | A kind of simple valve converting tool | |
| CN205806907U (en) | A kind of novel air accumulator | |
| CN201883969U (en) | Electric pump cable lateral wing crossing and sealing device | |
| CN105202223A (en) | Hydraulic high-pressure heater three-way valve | |
| CN204422315U (en) | A kind of additional locking devices for valve pressure test | |
| CN202611689U (en) | Self-sealing type rapid pressure taking device | |
| CN201653664U (en) | Portable detection device for detecting tightness of submersible | |
| CN212929529U (en) | Pressure tank sealing head with heat insulation structure | |
| CN105507866B (en) | Fracturing wellhead device | |
| CN103512808A (en) | Hydraulic pressure resistance property detection platform for mine waterproof type escape capsule | |
| CN203645291U (en) | Low-temperature glass encapsulation electric penetrating seal joint | |
| CN209606042U (en) | A kind of ring packing assembly test equipment | |
| CN208934643U (en) | A kind of PR2 grade tubing head of special construction | |
| CN202990937U (en) | Multi-stage oil well blowout preventer | |
| CN208313695U (en) | A kind of static-dynamic Interaction Mechanics behavior test device of coal seam containing gas | |
| CN201402197Y (en) | Nitrogen pressure monitoring device of high-voltage transformer | |
| CN201724754U (en) | Special thermoelectric couple for sulfur recovery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |