CN211234953U - Calibration system for pilot valve commander - Google Patents
Calibration system for pilot valve commander Download PDFInfo
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- CN211234953U CN211234953U CN201922075071.9U CN201922075071U CN211234953U CN 211234953 U CN211234953 U CN 211234953U CN 201922075071 U CN201922075071 U CN 201922075071U CN 211234953 U CN211234953 U CN 211234953U
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- pressure
- director
- air
- commander
- regulating valve
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Abstract
The utility model discloses an air-vent valve director calibration system belongs to oil gas pipeline maintenance technical field. The verification system includes: high-pressure nitrogen cylinder, director, a plurality of hoses, a plurality of control valves and a plurality of pressure gauges. The embodiment of the utility model provides an air-vent valve director calibration system through setting up high-pressure nitrogen cylinder, adopts high-pressure nitrogen gas as the air supply, inflates the check-up to the director after the maintenance, can reduce the risk that on-the-spot maintenance debugging equipment frequently fills the operation of filling medium natural gas and brings, reduces the waste of natural gas, shortens check-up time, practices thrift the check-up cost. In addition, the fault director is brought back to a maintenance team to be maintained by the checking system, so that the condition that spare parts are lacked on site is avoided, and the maintenance speed is increased.
Description
Technical Field
The utility model relates to an oil gas pipeline maintenance technical field, in particular to air-vent valve director calibration system.
Background
In the transportation of a gas pipe network, a pressure regulating valve with a director is often used, wherein the pressure regulating valve with the director controls the opening and closing of a valve by utilizing the pressure of a medium, the pressure behind the valve is taken as a power source, the pressure behind the valve is introduced to a director diaphragm to control the position of a valve core of the director, and the pressure and the flow of the medium flowing through the valve core of the director are changed, so that the pressure at the rear end of the valve is kept accurate and constant.
When the commander breaks down, after the maintenance is accomplished, need install it and fill on the pressure regulating sled and examine the debugging and establish to confirm whether maintain well. However, the frequent filling of the medium natural gas has a high operation risk and a long operation time, and if the director is not maintained at one time, the natural gas of the pressure regulating sledge needs to be emptied, and then the natural gas is detached for maintenance again, so that the waste of the natural gas is caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air-vent valve director calibration system can solve above-mentioned technical problem.
Specifically, the method comprises the following technical scheme:
the utility model provides a pressure regulating valve director verification system, includes: the device comprises a high-pressure nitrogen cylinder, a commander, a plurality of hoses, a plurality of control valves and a plurality of pressure gauges;
the high-pressure nitrogen cylinder is communicated with an air inlet of the commander through an air inlet hose;
the upper air chamber of the commander is connected with a measuring air hose, the middle air chamber of the commander is connected with a load air hose and an overflow air hose, and the free end of the measuring air hose is connected with the overflow air hose;
the air inlet hose is provided with a first control valve and a first pressure gauge; a second control valve and a second pressure gauge are arranged at the free end of the load air hose; and a third control valve and a third pressure gauge are arranged at the free end of the overflow air hose.
In one possible design, the pilot valve is a free-standing pressure regulating valve pilot valve.
In one possible design, the air inlet hose, the measurement air hose, the load air hose and the overflow air hose are all high pressure hoses.
In one possible design, the first control valve is a pressure reducing valve.
In one possible design, the second control valve and the third control valve are both needle valves.
In one possible design, the first pressure gauge, the second pressure gauge, and the third pressure gauge are all precision pressure gauges.
In one possible design, the pressure regulating valve director verification system further includes: checking a rack;
the commander, the control valves and the pressure gauges are all arranged on the checking rack.
In one possible design, the checking platform comprises a base, a supporting column fixed on the base, and a mounting platform fixed on the supporting column;
the commander, the control valves and the pressure gauges are all installed on the installation platform.
In one possible design, the mounting table comprises two mounting plates;
the two mounting panels are fixed at the top of the support column and are parallel to each other.
In one possible design, the base is i-shaped; the support column comprises two support tubes;
the bottom ends of the two supporting pipes are respectively fixed at the two ends of the base, and the two mounting plates are fixed at the tops of the two supporting pipes.
The embodiment of the utility model provides a technical scheme's beneficial effect is:
the embodiment of the utility model provides an air-vent valve director calibration system through setting up high-pressure nitrogen cylinder, adopts high-pressure nitrogen gas as the air supply, inflates the check-up to the director after the maintenance, can reduce the risk that on-the-spot maintenance debugging equipment frequently fills the operation of filling medium natural gas and brings, reduces the waste of natural gas, shortens check-up time, practices thrift the check-up cost. In addition, the fault director is brought back to a maintenance team for maintenance, the situation that spare parts are lacked on site is avoided, and the maintenance speed is increased.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of a working principle of a director provided by an embodiment of the present invention;
fig. 2 is a schematic view of a verification system for a pressure regulating valve director provided in an embodiment of the present invention.
The reference numerals in the drawings denote:
01. an upper baffle plate; 02. a lower baffle plate; 03. a nozzle;
1. a high-pressure nitrogen cylinder;
2. a director;
31. an air intake hose; 32. a measuring air hose; 33. a load gas hose; 34. an overflow gas hose;
41. a first control valve; 42. a second control valve; 43. a third control valve;
51. a first pressure gauge; 52. a second pressure gauge; 53. a third pressure gauge;
6. checking a rack; 61. a base; 62. a support pillar; 63. and (7) mounting a table.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following will describe the embodiments of the present invention in further detail with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "top", "bottom", "left", "right", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is conventionally placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Fig. 1 is a schematic structural diagram of a director, which generally comprises an upper baffle 01, a lower baffle 02 and a nozzle 03, wherein the upper baffle 01 and the lower baffle 02 divide an inner cavity of the director into an upper air chamber, a middle air chamber and a lower air chamber, and respectively form a pressure PUpper air chamber、PMiddle air chamberAnd PLower air chamber(ii) a The nozzle 03 is communicated with the middle gas chamber; the lower part of the lower baffle 02 is connected with an adjusting screw, and the size of an adjusting signal sent by the commander is realized by setting the adjusting screw to change the pressure of the spring on the baffle.
During pressure regulation, the upper air chamber is communicated with the downstream of the regulated pipeline and is used for sensing the downstream pressure change (P)Upper air chamberI.e. the pressure at the downstream of the pipeline), and the main valve (pressure regulating valve) of the middle air chamber is communicated with the right air chamber of the leather diaphragm.
When the pressure of the downstream of the regulated pipeline rises, the upper air chamber pressure P of the commanderUpper air chamberThe upper baffle plate 01 is lifted to move downwards a small distance to be close to the nozzle 03, so that the air quantity sprayed out by the nozzle 03 is reduced, and P isMiddle air chamberThe pressure of the air chamber at the right side of the main pressure regulator communicated with the middle air chamber is reduced due to the descending, the diaphragm moves rightwards under the action of the spring, and the flow areas of the air flow at the upstream and the downstream of the main valve are reduced, so that the pressure at the downstream of the regulated pipeline is reduced.
When the downstream pressure of the regulated pipeline is reduced, the upper air chamber pressure P of the commanderUpper air chamberLowering to make the upper baffle plate 01 move upwards a small distance away from the nozzle 03, increasing the amount of air ejected from the nozzle 03, and increasing PMiddle air chamberThe pressure of the air chamber at the right side of the main pressure regulator communicated with the middle air chamber is increased, the diaphragm moves leftwards under the action of the spring, the flow area of the air flow at the upstream and the downstream of the main valve is enlarged, and the pressure at the downstream of the regulated pipeline is increased.
Therefore, in the normal pressure regulating process, the pressure P of the air chamber on the commander is used as the pressure of the air chamberUpper air chamberWhen rising, the middle gas chamber PMiddle air chamberDescending; on the commanderPressure P of the air chamberUpper air chamberWhen reducing, the pressure P of the middle air chamberMiddle air chamberAnd (4) rising.
Based on this, the embodiment of the utility model provides a pressure-regulating valve director calibration system, as shown in fig. 2, this pressure-regulating valve director calibration system includes: the device comprises a high-pressure nitrogen cylinder 1, a commander 2, a plurality of hoses, a plurality of control valves and a plurality of pressure gauges; the high-pressure nitrogen cylinder 1 is communicated with an air inlet of the commander 2 through an air inlet hose 31; the upper air chamber of the commander 2 is connected with a measuring air hose 32, the middle air chamber of the commander 2 is connected with a load air hose 33 and an overflow air hose 34, and the free end of the measuring air hose 32 is connected with a downstream hose 35; the air inlet hose 31 is provided with a first control valve 41 and a first pressure gauge 51; the free end of the load air hose 33 is provided with a second control valve 42 and a second pressure gauge 52; a third control valve 43 and a third pressure gauge 53 are provided on the free end of the overflow air hose 34.
When the device is applied, the maintained director 2 is connected to the calibration system, and the outlet pressure value of the director 2 is set by rotating the adjusting screw on the high-pressure nitrogen cylinder 1; then, the high-pressure nitrogen cylinder 1 is opened, the high-pressure nitrogen enters a nozzle of the director 2 through the air inlet hose 31 and is sprayed out through the nozzle to enter a middle air chamber, and further enters the load air hose 33 and the overflow air hose 34, wherein the nitrogen entering the overflow air hose 34 enters an upper air chamber of the director 2 through the measurement air hose 32; a third pressure gauge 53 for measuring the pressure on the overflow air hose 34, and a second pressure gauge 52 for measuring the pressure on the load air hose 33; adjusting the system pressure, wherein when the pressure value of the third pressure gauge 53 is increased, the pressure value of the second pressure gauge 52 is decreased, and when the pressure value of the third pressure gauge 53 is decreased, the pressure value of the second pressure gauge 52 is increased, which indicates that the director 2 is well maintained and can be used normally; otherwise, the director 2 is not maintained and cannot be used normally.
The embodiment of the utility model provides an air-vent valve director calibration system through setting up high-pressure nitrogen gas bottle 1, adopts high-pressure nitrogen gas as the air supply, aerifys the check-up to director 2 after the maintenance, can reduce the risk that on-the-spot maintenance debugging equipment frequently fills the operation of filling medium natural gas and brings, reduces the waste of natural gas, shortens check-up time, practices thrift the check-up cost. In addition, the fault director is brought back to a maintenance team for maintenance, the situation that spare parts are lacked on site is avoided, and the maintenance speed is increased.
In the above-described pressure regulating valve director verification system, the director 2 may be a self-standing pressure regulating valve director. And to the detection of the self-supporting air-vent valve commander of different brands, if the connection interface is not suitable, the connection can be realized by replacing the connection interface, and then the detection and the adjustment are carried out.
In addition, this commander calibration system still can detect the safety cut-off valve commander that maintains and transfer and establish. When the safety cut-off valve is applied, only the air inlet of the commander of the safety cut-off valve is connected to the high-pressure air inlet of the checking platform of the commander. The set pressure of the safety cut-off valve is given through a first control valve 41 at the outlet of the gas cylinder, and then a set safety cut-off valve commander is detected and set.
Wherein the first control valve 41 is a pressure reducing valve arranged at the outlet of the high pressure nitrogen gas cylinder 1 and is used for controlling the inlet pressure of the checking system so as to simulate the upstream pressure in practical application. The second control valve 42 and the third control valve 43 are used to intercept the flow of air and the blow-down air to simulate the downstream pressure in practical applications, and the second control valve 42 and the third control valve 43 may be needle valves, which are valves that can be precisely adjusted.
Further, the air inlet hose 31, the measurement air hose 32, the load air hose 33, the overflow air hose 34, and the downstream hose 35 may be all high-pressure hoses, and may be exemplified by
A high pressure hose.
Further, the first pressure gauge 51, the second pressure gauge 52 and the third pressure gauge 53 may be precision pressure gauges. The precision pressure gauge consists of a pressure measuring system, a transmission mechanism, an indicating device and a shell. The pressure measuring elastic element of the precision pressure gauge is processed by a special process, so that the precision pressure gauge has stable and reliable performance, and the precision indication precision can be ensured after the precision pressure gauge is matched and debugged with a high-precision transmission mechanism. The pressure gauge with higher precision is adopted, so that the pressure precision after pressure regulation can be ensured.
In addition, when in use, the first pressure gauge 51 may be installed on the air inlet hose 31, and the first pressure gauge 51 is located between the first control valve 41 and the commander 2. A second pressure gauge 52 may be mounted on the second control valve 42 and a third pressure gauge 53 may be mounted on the third control valve 43.
In the above pressure regulating valve commander verification system, for the convenience of the operation of the operator, the verification system may further include: a calibration stand 6; wherein, commander 2, a plurality of control valve and a plurality of manometer all set up on check-up rack 6.
During the application, operating personnel can operate on the check-up rack 6, and the check-up rack 6 can make each subassembly neatly arrange in order, the rocking and the pipeline winding of each subassembly when avoiding the check-up.
The embodiment of the utility model provides a do not have strict limitation to the structure of check-up rack 6, can fixed mounting director 2, control valve, manometer can. In one possible embodiment, as shown in fig. 2, the verification stage 6 may be made to include a base 61, a support column 62 fixed to the base 61, and a mount 63 fixed to the support column 62; the commander 2, a plurality of control valves and a plurality of pressure gauges are all installed on the mount table 63.
Further, the mount table 63 includes two mount plates; both mounting plates are fixed at the top of the support column 62 and are parallel to each other.
The two mounting plates are arranged in parallel, a mounting structure with a slit can be formed, and the slit structure can facilitate the mounting of the commander 2, the control valve, the pressure gauge and the like.
The base 61 can also be made in an I shape in consideration of the structural stability of the checking rack 6; the support column 62 includes two support tubes; the bottom ends of the two supporting tubes are respectively fixed at the two ends of the base 61, and the two mounting plates are fixed at the tops of the two supporting tubes.
The technical effects of the present invention will be further explained with reference to the application examples below:
application examples
Example 1: the downstream branch of the host branch transmission station is used for four paths of branch transmission pressure regulating sleds, the 650 director which is well maintained is used for replacing the pressure regulating sleds in the same model, the fault of the pressure regulating sleds is eliminated within half an hour when the station arrives, the equipment is enabled to run normally, and the normal branch transmission of the equipment is ensured.
Example 2: 630 and 650 RMG pressure regulating valve commanders are difficult to repair and cannot be used in the tin-free maintenance team of the Su Zhejiang Shanghai management department, are mailed to the Huaian maintenance rush-repair team, are installed on a commander verification rack for verification after maintenance, and are finally qualified through inspection and adjustment. And sending back to a tin-free maintenance team, installing the maintenance team on equipment, and recovering the equipment to be normal, wherein the value of the two commanders is 12 thousands.
It is visible, the embodiment of the utility model provides an air-vent valve director check-up system can confirm effectively whether the trouble air-vent valve director maintains well, and can reduce the check-up time and the check-up cost of director greatly, eliminates frequently to fill the risk that brings into the operation of medium natural gas, avoids the waste of natural gas.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pressure regulating valve director verification system, comprising: the device comprises a high-pressure nitrogen cylinder (1), a commander (2), a plurality of hoses, a plurality of control valves and a plurality of pressure gauges;
the high-pressure nitrogen cylinder (1) is communicated with an air inlet of the commander (2) through an air inlet hose (31);
a measuring air hose (32) is connected to the upper air chamber of the commander (2), a load air hose (33) and an overflow air hose (34) are connected to the middle air chamber of the commander (2), and the free end of the measuring air hose (32) is connected to the overflow air hose (34);
a first control valve (41) and a first pressure gauge (51) are arranged on the air inlet hose (31); a second control valve (42) and a second pressure gauge (52) are arranged at the free end of the load air hose (33); and a third control valve (43) and a third pressure gauge (53) are arranged at the free end of the overflow air hose (34).
2. The pressure regulating valve director verification system according to claim 1, wherein said director (2) is a free standing pressure regulating valve director.
3. The pressure regulating valve director verification system according to claim 1, wherein said air inlet hose (31), said measurement air hose (32), said load air hose (33) and said spill air hose (34) are all high pressure hoses.
4. A pressure regulating valve director verification system according to claim 1, wherein said first control valve (41) is a pressure reducing valve.
5. A pressure regulating valve director verification system according to claim 1 wherein said second control valve (42) and said third control valve (43) are needle valves.
6. The pressure regulating valve director verification system of claim 1, wherein said first pressure gauge (51), said second pressure gauge (52) and said third pressure gauge (53) are precision pressure gauges.
7. The pressure regulating valve director verification system according to any one of claims 1-6, further comprising: a calibration stand (6);
the commander (2), the control valves and the pressure gauges are all arranged on the checking rack (6).
8. The system according to claim 7, wherein the verification stage (6) comprises a base (61), a support column (62) fixed on the base (61), and a mounting stage (63) fixed on the support column (62);
the commander (2), the control valves and the pressure gauges are all installed on the installation platform (63).
9. The pressure regulating valve director verification system according to claim 8, wherein said mounting table (63) comprises two mounting plates;
the two mounting plates are fixed at the top of the support column (62), and are parallel to each other.
10. The pressure regulating valve director verification system according to claim 9, wherein said base (61) is i-shaped; the support column (62) comprises two support tubes;
the bottom ends of the two supporting pipes are respectively fixed at two ends of the base (61), and the two mounting plates are fixed at the tops of the two supporting pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922075071.9U CN211234953U (en) | 2019-11-26 | 2019-11-26 | Calibration system for pilot valve commander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922075071.9U CN211234953U (en) | 2019-11-26 | 2019-11-26 | Calibration system for pilot valve commander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211234953U true CN211234953U (en) | 2020-08-11 |
Family
ID=71932785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922075071.9U Active CN211234953U (en) | 2019-11-26 | 2019-11-26 | Calibration system for pilot valve commander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211234953U (en) |
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2019
- 2019-11-26 CN CN201922075071.9U patent/CN211234953U/en active Active
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