CN217687854U - Online calibration device for pilot-operated breather valve - Google Patents
Online calibration device for pilot-operated breather valve Download PDFInfo
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- CN217687854U CN217687854U CN202123347177.3U CN202123347177U CN217687854U CN 217687854 U CN217687854 U CN 217687854U CN 202123347177 U CN202123347177 U CN 202123347177U CN 217687854 U CN217687854 U CN 217687854U
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Abstract
The utility model provides an online calibration equipment of guide's formula breather valve, including malleation pipeline, negative pressure pipeline and check-up pipeline, malleation pipeline and negative pressure pipeline are passed through positive negative pressure diverter valve parallel connection on the check-up pipeline, and the malleation pipeline is used for providing malleation inspection air supply for the check-up pipeline with positive pressure gas supply equipment intercommunication, and negative pressure pipeline and negative pressure gas holder and vacuum pump intercommunication provide negative pressure inspection air supply for the check-up pipeline, be equipped with hand pressure ball and manometer on the check-up pipeline. This design simple structure, malleation pipeline and negative pressure pipeline parallel connection are on the check-up pipeline, and the negative pressure pipeline independently matches has negative pressure gas holder and vacuum pump, therefore this design product convenient to carry satisfies the online check-up demand of various operating mode guide formula breather valves.
Description
Technical Field
The utility model belongs to guide's formula breather valve calibration field especially relates to online calibration equipment of guide's formula breather valve.
Background
The pilot-operated breather valve is a safe and energy-saving product for maintaining the air pressure balance of the storage tank and reducing the volatilization of a medium, the breather valve fully utilizes the bearing capacity of the storage tank to reduce the discharge of the medium, and the principle of the breather valve is to utilize the weight of a positive-negative pressure valve disc to control the positive exhaust pressure and the negative suction pressure of the storage tank; when the medium is pumped out of the tank, the pressure of the upper gas space in the tank is reduced, and the operation negative pressure of the breather valve is reached, the negative pressure valve disc of the top breather valve is pushed open by the atmosphere outside the tank, so that the external gas enters the tank, the pressure in the tank is not reduced any more, the pressure inside the tank is balanced with the pressure outside the tank, and the safety device of the storage tank is protected.
The prior market has the disadvantages of complex positive and negative pressure checking device of the pilot-operated breather valve and inconvenient carrying, the pilot valve of the breather valve needs to be taken down from the storage tank and installed on the checking platform during checking, the off-line checking mode influences the normal use of the storage tank, the dismounting and installing operation is laborious, meanwhile, the checking precision is difficult to ensure because the positive and negative pressure checking gas pressure is higher, the circulation mode is equally divided into the automatic mode,
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing the online calibration equipment of guide's formula breather valve, realizes the online calibration of guide's formula breather valve to the installation on the storage tank through this device, saves the dismouting operation, improves the check-up precision, satisfies the online calibration work of guide's formula breather valve under the various operating mode conditions.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the pilot-operated type breather valve on-line checking device comprises a positive pressure pipeline, a negative pressure pipeline and a checking pipeline, wherein one end of the checking pipeline is connected with the pilot-operated type breather valve on a storage tank, the positive pressure pipeline and the negative pressure pipeline are connected to the other end of the checking pipeline in parallel through a positive and negative pressure switching valve, a positive pressure air source interface of the positive pressure pipeline is connected with positive pressure air source equipment, a negative pressure air source interface of the negative pressure pipeline is communicated with a negative pressure air storage tank, the negative pressure air storage tank is communicated with a vacuum pump, a hand pressure ball is communicated on the checking pipeline through an air pipe, and a pressure gauge for displaying a checking pressure value is arranged on the checking pipeline.
Furthermore, a check valve is arranged on the check pipeline.
Further, the check valve is a fine adjustment needle type valve.
Furthermore, a pressure release valve is arranged on the checking pipeline.
Further, the positive pressure gas source equipment is a nitrogen gas storage tank with a positive pressure pipeline configured independently.
Further, a pressure reducing valve is arranged on the positive pressure pipeline.
Further, the vacuum pump is a portable vacuum pump.
Compared with the prior art, the online calibration equipment of guide's formula breather valve have following advantage:
(1) This design simple structure, malleation pipeline and negative pressure pipeline parallel connection are on the check-up pipeline, and the negative pressure pipeline independently matches has negative pressure gas holder and vacuum pump, therefore this design product convenient to carry satisfies the online check-up demand of various operating mode guide formula breather valves.
(2) In this design, set up the check-up valve on the check-up pipeline to adjustment check-up pipeline air velocity and size, and then further control guide's formula breather valve malleation and negative pressure environmental change speed, guarantee that the check-up environment changes steadily, and then improve the check-up precision, guarantee that the check-up data is stable.
(3) In the design, the check pipeline is provided with the hand-pressing ball, in the positive pressure check process, when the display meter displays that the positive pressure is close to the setting pressure of the pilot-operated breather valve, air is slowly input by hand-pressing to supplement the positive pressure, and the positive pressure gas is manually input to further reduce the flow velocity and flow of the positive pressure check gas so as to improve the accuracy of check data.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural diagram of an online checking device for a pilot-operated breathing valve according to this embodiment;
description of reference numerals:
1-nitrogen gas storage tank; 2-negative pressure gas storage tank; 3-a vacuum pump; 4-positive pressure gas source interface; 5-a pressure reducing valve; 6-positive and negative pressure switching valves; 7-negative pressure air source interface; 8-a check valve; 9-a pressure release valve; 10-a pressure gauge; 11-pressing the ball by hand; 12-checking the pipeline; 13-positive pressure piping; 14-negative pressure pipeline; 15-pilot type breather valve.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in figure 1, the pilot-operated breather valve on-line checking device comprises a positive pressure pipeline 13, a negative pressure pipeline 14 and a checking pipeline 12, wherein one end of the checking pipeline 12 is communicated with the pilot-operated breather valve 15 on the storage tank, and at the moment, a pilot valve and a main valve of the pilot-operated breather valve 15 are simultaneously communicated with the checking pipeline 12. The positive pressure pipeline 13 and the negative pressure pipeline 14 are connected in parallel with the other end of the checking pipeline 12 through the positive and negative pressure switching valve 6, that is, the positive pressure pipeline 13 and the negative pressure pipeline 14 are communicated with the other end of the checking pipeline 12 through the positive and negative pressure switching valve 6. The positive pressure gas source interface 4 of the positive pressure pipeline 13 is used for being communicated with positive pressure gas source equipment to provide positive pressure for the pilot-operated breather valve, and a positive pressure detection pressure value of the pilot-operated breather valve is obtained by observing the numerical value change condition of the pressure gauge 10 to check the positive pressure setting pressure, namely the expiratory pressure of the pilot-operated breather valve. The checking pipeline 12 is provided with a pressure gauge 10 for displaying a checking pressure value, the checking pipeline 12 is also communicated with a hand-pressing ball 11 through an air pipe, the outlet of the hand-pressing ball 11 is connected with the checking pipeline through the air pipe, and the hand-pressing ball 11 is used for manually supplementing air for the checking pipeline 12. In this embodiment, during the verification operation, the positive pressure gas source equipment may be the high pressure gas source equipment of the enterprise self-provided, and at this time, the positive pressure gas source interface 4 is connected to the high pressure gas source equipment of the enterprise self-provided, and the positive pressure pipeline 13 is communicated with the high pressure gas source equipment of the enterprise, so as to provide the positive pressure detection gas source for the pilot-operated breathing valve through the verification pipeline 12. The positive pressure gas source equipment can also be a high pressure gas tank independently configured for a positive pressure pipeline 13, preferably a high pressure nitrogen gas storage tank 1, the positive pressure gas source interface 4 is communicated with the gas outlet of the high pressure nitrogen gas storage tank 1, and at the moment, the high pressure nitrogen gas storage tank 1 provides a positive pressure test gas source for the pilot-operated breathing valve through a verification pipeline 12. The negative pressure air source connector 7 of the negative pressure pipeline 14 is communicated with a negative pressure air storage tank 2, the negative pressure air storage tank 2 is communicated with a vacuum pump 3, the vacuum pump 3 carries out vacuum pumping operation on the negative pressure air storage tank 2, and then a negative pressure inspection air source is provided for the pilot-operated breather valve through the checking pipeline 12. In this embodiment, the vacuum pump 3 is a portable vacuum pump, the vacuum pump 3 is turned on to perform a vacuum pumping operation, negative pressure is generated in the negative pressure gas storage tank 2, so that a negative pressure effect is integrally formed on the negative pressure pipeline 14 and the detection pipeline, and a negative pressure detection pressure value of the pilot-operated breather valve is finally obtained to verify a negative pressure setting pressure, i.e., an inspiratory pressure, of the pilot-operated breather valve.
In this embodiment, in order to improve the precision of the inspection data, the inspection pipeline 12 is provided with an inspection valve 8. The check valve 8 is a fine adjustment needle valve. The setting of the check valve 8 is convenient for the inspector to control the flow velocity and flow rate of the gas in the inspection pipeline, the flow velocity and flow rate of the positive pressure checking gas and the negative pressure checking gas are reduced as much as possible, and the slower the flow rate of the conveyed checking gas is, the higher the checking precision is.
In this embodiment, a pressure release valve 9 is arranged on the calibration pipeline 12, and after the calibration is finished, the pressure release valve is used for releasing the residual pressure of the calibrated pilot-operated breather valve 15, so that the calibrated valve returns to the seat, all parts of the calibration device are protected, and the numerical value of the pressure gauge returns to zero.
In this embodiment, the positive pressure pipeline 13 is provided with a pressure reducing valve 5.
The principle of the online checking operation of the embodiment is that the device is moved to the side of the storage tank, an interface at one end of the checking pipeline 12 is communicated with the pilot type breather valve 15 of the storage tank, and at the moment, the pilot valve and the main valve of the pilot type breather valve 15 are respectively communicated with the checking pipeline 12.
During positive pressure verification, the positive/negative pressure switching valve 6 is switched to a positive pressure verification state, at this time, the positive pressure pipeline 13 is communicated with the verification pipeline 12, and the negative pressure pipeline 14 is closed. The positive pressure air source equipment enters the checking pipeline 12 through the positive pressure pipeline 13, provides positive pressure for the pilot type breather valve 15, and observes the numerical value of the pressure gauge 10. When the pressure gauge 10 displays that the value is 90% of the set pressure of the pilot-operated breather valve 15, the check valve 8 is closed, the positive pressure pipeline 13 is closed at the moment, the valve switches at the inlet and the outlet of the hand pressure ball 11 are respectively opened, because the hand pressure ball 11 is respectively provided with the one-way valve at the outlet and the inlet, and the one-way valve at the outlet of the hand pressure ball ensures that the gas can only be input into the check pipeline 12 through the hand pressure ball 11, the gas in the check pipeline 12 is prevented from reversely flowing into the hand pressure ball 11, the one-way valve at the inlet of the hand pressure ball 11 ensures that the gas is input into the hand pressure ball 11, and the gas in the hand pressure ball 11 is prevented from being output outwards through the inlet. The hand-pressure ball 11 is slowly squeezed manually, air entering the hand-pressure ball from an air inlet of the hand-pressure ball 11 is slowly output to the checking pipeline 12, the pressure increasing rate is relatively slow, the change of the value of the pressure gauge 10 is observed, when the value of the pressure gauge 10 is observed to be increased to a certain critical value and then suddenly reduced, the pilot type breather valve pilot valve is opened at the moment, the main valve is opened, and the critical value displayed by the pressure gauge 10 is the positive pressure detection pressure value of the pilot type breather valve, so that the expiratory setting pressure of the breather valve is checked.
During negative pressure calibration, the positive and negative pressure switching valve 6 is switched to a negative pressure calibration state, at the moment, the negative pressure pipeline 14 is communicated with the calibration pipeline 12, the positive pressure pipeline 13 is closed, and meanwhile, valve switches of an inlet and an outlet of the hand pressure ball 11 are closed. And starting the vacuum pump 3 to vacuumize the negative pressure gas storage tank 2, providing a negative pressure test gas source for the negative pressure pipeline 14 and the check pipeline 12, and further providing negative pressure for the pilot-operated breather valve 15. And observing the value of the pressure gauge 10, wherein when the pressure gauge 10 shows that the negative pressure value is reduced to a certain critical value and then is suddenly increased, the critical value is the negative pressure detection pressure value of the pilot type breather valve so as to verify the inspiration setting pressure of the pilot type breather valve 15.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The online verifying attachment of guide's formula breather valve, its characterized in that: the pressure checking device comprises a positive pressure pipeline (13), a negative pressure pipeline (14) and a checking pipeline (12), one end of the checking pipeline (12) is connected with a pilot-operated breather valve (15) on a storage tank, the positive pressure pipeline (13) and the negative pressure pipeline (14) are connected to the other end of the checking pipeline (12) in parallel through a positive and negative pressure switching valve (6), a positive pressure air source interface (4) of the positive pressure pipeline (13) is connected with positive pressure air source equipment, a negative pressure air source interface (7) of the negative pressure pipeline (14) is communicated with a negative pressure air storage tank (2), the negative pressure air storage tank (2) is communicated with a vacuum pump (3), a hand pressure ball (11) is communicated on the checking pipeline (12) through an air pipe, and the checking pipeline (12) is provided with a pressure gauge (10) for displaying a checking pressure value.
2. The on-line verification device for a piloted breathing valve as in claim 1, wherein: and a check valve (8) is arranged on the check pipeline (12).
3. The on-line verification device for a piloted breathing valve as in claim 2, wherein: the check valve (8) is a fine adjustment needle valve.
4. The on-line verification device for a piloted breathing valve as in claim 1, wherein: and a pressure release valve (9) is arranged on the checking pipeline (12).
5. The on-line verification device for a pilot operated breathing valve according to claim 1, wherein: the positive pressure air source equipment is a nitrogen gas storage tank (1) with a positive pressure pipeline (13) independently configured.
6. The on-line verification device for a piloted breathing valve as in claim 1, wherein: and a pressure reducing valve (5) is arranged on the positive pressure pipeline (13).
7. The on-line verification device for a piloted breathing valve as in claim 1, wherein: the vacuum pump (3) is a portable vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123347177.3U CN217687854U (en) | 2021-12-28 | 2021-12-28 | Online calibration device for pilot-operated breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123347177.3U CN217687854U (en) | 2021-12-28 | 2021-12-28 | Online calibration device for pilot-operated breather valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217687854U true CN217687854U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123347177.3U Active CN217687854U (en) | 2021-12-28 | 2021-12-28 | Online calibration device for pilot-operated breather valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217687854U (en) |
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2021
- 2021-12-28 CN CN202123347177.3U patent/CN217687854U/en active Active
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