CN215214912U - Can online monitoring back-fire relief breather valve and monitoring system - Google Patents
Can online monitoring back-fire relief breather valve and monitoring system Download PDFInfo
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- CN215214912U CN215214912U CN202120423036.6U CN202120423036U CN215214912U CN 215214912 U CN215214912 U CN 215214912U CN 202120423036 U CN202120423036 U CN 202120423036U CN 215214912 U CN215214912 U CN 215214912U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 35
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 19
- 239000003063 flame retardant Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 5
- 230000009970 fire resistant effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model discloses a but online monitoring back-fire relief breather valve and monitoring system, including the valve body, the valve body upper portion is sealed to be equipped with the valve gap, and the valve body is equipped with the breathing cavity including the intake chamber top, the breathing cavity is equipped with the valve rod subassembly, and the intake chamber of valve body lower part is sealed to be equipped with the back-fire relief part with breathing between the cavity, and breathing cavity upper portion is equipped with position sensor, pressure sensor and flame sensor. Through the setting of position sensor, pressure sensor and flame sensor, can effectively solve current breather valve on-line monitoring and waste time and energy and the problem that monitoring data can not real-time synchronization.
Description
Technical Field
The utility model belongs to the technical field of the balanced valve, especially, relate to a but online monitoring back-fire relief breather valve and monitoring system.
Background
In recent years, volatile organic pollutants (VOCs) discharged in an unorganized way are increasingly receiving social attention, and effective control of the VOCs becomes a hotspot problem in the field of atmospheric environmental governance in China at the present stage. The working principle of the fire-retardant breather valve is that when the container bears positive pressure, the breather valve opens the expired gas to release the positive pressure; when the container bears negative pressure, the fireproof breather valve opens the suction gas to release the negative pressure. Therefore, the pressure is ensured to be in a certain range, and the safety of the container is ensured. The fireproof breather valve can not only maintain the air pressure balance of the storage tank, ensure the storage tank to be damaged under overpressure or vacuum, but also reduce the medium and loss in the tank. However, the fire-retardant breather valve is used as the last safety barrier of the storage tank, and is an important leakage point for VOCs management while protecting the storage tank. Thus, the petrochemical industry has higher and higher specification requirements for the leakage amount of the breather valve, and the petrochemical industry and part of local standards have the following requirements for the leakage amount of the breather valve according to the API 2000: the leakage of the valve is measured when 75% of the set pressure is reached, and the maximum allowable leakage value is as follows: the valve size is less than or equal to DN 150: the maximum leakage amount is 0.014m 3/h; the valve size is more than DN150 and less than or equal to DN 400: the maximum leakage amount is 0.142m 3/h; valve size > DN 400: the maximum leakage amount is 0.566m 3/h. Meanwhile, the internal files of the medium and petrochemical industry also make requirements on VOCs emission detection: the method comprises the steps of periodically carrying out inspection and detection on a storage tank which is not subjected to sealed collection treatment by using methods such as an FID (methane as a calibration standard gas) field analysis method, a gas chromatographic analyzer analysis method and the like, and making provisions on the number, frequency and method of detection points, wherein the detection is required to cover at least two working conditions of oil collection and stillness of the storage tank, namely two working periods of the morning and the afternoon. The fire-retardant breather valve is one of the main leakage points of the normal-pressure storage tank, and if manual detection is carried out according to the required detection method and sampling frequency, a large amount of labor cost and time cost are consumed. Therefore, the fire-retardant breather valve capable of being monitored on line and the monitoring system are designed.
Disclosure of Invention
An object of the utility model is to provide a but online monitoring back-fire relief breather valve and monitoring system can effectively solve current breather valve on-line monitoring and waste time and energy and the problem that monitoring data can not be synchronous in real time.
In order to achieve the above object, the utility model discloses a but on-line monitoring back-fire relief breather valve and monitoring system's concrete technical scheme as follows:
the utility model provides a but online monitoring back-fire relief breather valve, includes the valve body, and the valve body upper portion is sealed to be equipped with the valve gap, and the valve body is equipped with the breathing cavity including the chamber top of admitting air, and the breathing cavity is equipped with the breathing dish subassembly, the breathing cavity is equipped with the valve rod subassembly, and the sealed back-fire relief part that is equipped with between the chamber of admitting air of valve body lower part and the breathing cavity, breathing cavity upper portion is equipped with position sensor, pressure sensor and flame sensor.
Further, the breathing chamber includes an inhalation chamber and an exhalation chamber.
Further, fire retardant part includes fire retardant bars and clamping ring.
Furthermore, a clamping groove for fixing a fire retardant component is formed in the lower portion of the valve body.
Further, the valve stem assembly includes an inhalation valve stem for an inhalation chamber and an exhalation valve stem for an exhalation chamber.
Furthermore, a through hole is formed in the middle of the valve cover, and a blocking cover is arranged at the through hole.
Furthermore, the plug cover is provided with an inner hole, and the inner hole is coupled with the upper end of the expiratory valve rod.
Furthermore, a rain-proof cap is arranged at the port of the air suction cavity.
Furthermore, a flange plate is arranged at the lower part of the air inlet cavity.
A monitoring system capable of monitoring a fire-retardant breather valve on line,
the position sensor monitoring method comprises the steps that the position of an expiratory valve disc is sensed and converted into a corresponding level signal, the level signal is converted into a physical signal by a signal processor, the signal processor transmits the signal to an AI module, the AI module finishes signal acquisition, acquired data are transmitted to a CPU, the CPU finishes data processing, then the data are transmitted to a computer, and a DCS monitors the change of the physical signal, so that the real-time height change of the valve disc is judged;
the pressure sensor monitoring method comprises the steps that pressure is converted into a current signal through a pressure transmitter detection unit, the current signal is converted into a physical signal through a signal processor, the signal processor is connected to an AI module of the DCS, the AI module finishes signal acquisition, the acquired data is arranged and transmitted into a computer, the DCS monitors real-time change of the physical signal, when pressure data acquired and displayed by the DCS is different from a set value, a CPU transmits the signal to an AO module, the AO module transmits the signal to an alarm, and an alarm host alarms until the pressure is restored to a set range or a power supply is cut off;
the flame sensor monitoring method is characterized in that flame is monitored through an infrared receiving tube, the brightness of the flame is converted into a level signal with high and low changes, the level signal is converted into a physical signal by a signal processor, the signal processor is connected with a DCS system, an A/D converter of the signal processor enables a computer to display a curve with a numerical value change within a range of 0-255, when the computer displays a corresponding numerical value, a CPU transmits the signal to an AO module, the AO module transmits the signal to an alarm, the alarm gives an alarm, the CPU receives an instruction of an operator and internal linkage, transmits the signal to a DO module, and the DO module transmits the signal to air source switch control equipment, so that the air source switch control equipment is controlled to be switched off.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses not only collect the back-fire relief, breathe in an organic whole, increased pressure moreover, flame, position sensor and superpressure and flame alarm system, the pressure that can online real-time supervision non-protection side output port, the state of expiration system and the appearance of flame to timely discovery problem, solution problem.
2. The closure cap 12 with the appropriate length of the inner bore can be selected as desired to control the distance of travel of the valve disc to rise and thus the size of the valve.
Drawings
FIG. 1 is a schematic view of the structure of the valve body of the present invention;
fig. 2 is a schematic view of the present invention.
The reference numbers in the figures illustrate: 1. the novel fire-resistant valve comprises a valve body, 11 parts of a valve cover, 12 parts of a blocking cover, 13 parts of a flange plate, 2 parts of an air inlet cavity, 3 parts of a valve rod assembly, 31 parts of an expiration valve rod, 4 parts of a fire-resistant component, 41 parts of a fire-resistant grid, 5 parts of a position sensor, 6 parts of a pressure sensor, 7 parts of a flame sensor, 8 parts of an air suction cavity, 81 parts of a rain-proof cap, 9 parts of an expiration cavity, 10 parts of a signal processor and 11 parts of a DCS system.
The specific implementation mode is as follows:
in order to better understand the purpose, structure and function of the present invention, the following description is made with reference to the accompanying drawings.
As figure 1, design a can online monitoring back-fire relief breather valve, including valve body 1, valve body 1 upper portion is through sealing washer sealing connection valve gap 11, and valve body 1 includes air inlet chamber 2, and air inlet chamber 2 top is equipped with respiratory chamber, respiratory chamber is equipped with valve rod assembly 3, valve body assembly inner chamber is breathing the dish and sucking disc subassembly is controlling the unblocked of breathing in and exhaling including forming. The inhalation system and the exhalation system are identical in structure. A fire retardant component 4 is hermetically arranged between the air inlet cavity 2 and the breathing cavity at the lower part of the valve body 1, a position sensor 5, a pressure sensor 6 and a flame sensor 7 are arranged at the upper part of the breathing cavity, the state of an exhalation system can be monitored on line through the position sensor 5, the opening height of the exhalation disk is judged, and the smoothness of a medium in a pipeline is ensured; the pressure sensor 6 can monitor the pressure of the output chamber in real time, and the flame sensor 7 can monitor the occurrence of a fire source in real time, so that potential risks which may occur are monitored in real time and solved in time.
Wherein the breathing chamber comprises an inhalation chamber 8 and an exhalation chamber 9. The valve stem assembly 3 comprises an inhalation valve stem for an inhalation chamber and an exhalation valve stem 31 for an exhalation chamber.
As shown in fig. 2, a monitoring system capable of monitoring a fire-retardant breather valve on line,
the position sensor monitoring method comprises the steps that the position of an expiratory valve disc is sensed and converted into a corresponding level signal (4-20 mA. DC signal), the level signal is converted into a physical signal by a signal processor 10, the signal processor 10 transmits the signal to an AI module, the AI module finishes signal acquisition, acquired data are transmitted into a CPU, the CPU finishes data conversion, linkage and other processing, then the data are transmitted to a computer, a DCS (distributed control system) 11 monitors the change of the physical signal and synchronously displays the position change curve of a measured object, and therefore the real-time height change of the valve disc is judged;
the pressure sensor monitoring method comprises the steps that pressure is converted into 4-20mA (0-10V) DC signals through a pressure transmitter detection unit, current signals are converted into physical signals through a signal processor 10, the signal processor 10 is connected to an AI module of a DCS (distributed control system) 11, the AI module finishes signal acquisition, the acquired data are transmitted into a CPU (central processing unit) through communication, the CPU finishes data conversion, linkage and the like, the acquired data are arranged and transmitted into a computer, the DCS 11 monitors real-time change of the physical signals, when the pressure data acquired and displayed by the DCS 11 are different from a set value, the CPU transmits the signals to an AO module, the AO module transmits the signals to an alarm, the alarm main machine whistles to alarm, and an alarm indicator lamp is lightened until the pressure is restored to the set range or a power supply is cut off;
the flame sensor monitoring method comprises the steps that flame is monitored through an infrared receiving tube, the brightness of the flame is converted into a level signal (4-20 mA. DC signal) with high and low changes, the level signal is converted into a physical signal through a signal processor 10, the signal processor is connected with a DCS (distributed control system) 11, an A/D (analog/digital) converter of the signal processor enables a computer to display a curve with a numerical value changing range of 0-255, when the computer displays a corresponding numerical value, a CPU (central processing unit) transmits the signal to an AO (analog-to-digital) module, the AO module transmits the signal to an alarm, the alarm sounds a whistle to give an alarm, and the alarm is manually turned off by an operator. Meanwhile, the CPU receives instructions of an operator and internal linkage and transmits signals to the DO module, and the DO module transmits the signals to the air source switch control equipment so as to control and regulate the closing of the air source equipment.
In the above embodiment, 3 examples are listed to realize the above technical solution:
example 1
This embodiment is back-fire relief part 4 includes back-fire relief bars 41 and clamping ring, and the clamping ring compresses tightly back-fire relief bars 41 and valve body 1 in back-fire relief bars 41's top, 1 lower part of valve body is equipped with the draw-in groove that is used for fixed back-fire relief part 4, can make back-fire relief part 4 better with valve body 1 sealing joint.
Example 2
The embodiment is that the middle part of the valve cover 11 is provided with a through hole, the through hole is provided with a blocking cover 12, the blocking cover 12 is provided with an inner hole, the inner hole is coupled with the upper end of the expiratory valve rod 31, so that the expiratory valve rod can move up and down in the inner hole, and the blocking cover 12 with the proper length of the inner hole can be selected as required to control the ascending stroke distance of the valve disc.
Example 3
In this embodiment, the port of the suction chamber 8 is fixedly provided with a rain-proof cap 81 through a fastener, and the fastener can be selected from a bolt and a nut. The lower part of the air inlet chamber 2 is provided with a flange plate 13, and the flange plate 13 is provided with a sealing ring, so that a better sealing effect is achieved.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.
Claims (10)
1. The utility model provides a but on-line monitoring back-fire relief breather valve, includes valve body (1), and valve body (1) upper portion is sealed to be equipped with valve gap (11), and valve body (1) is equipped with breathing cavity, its characterized in that including air inlet cavity (2) above air inlet cavity (2): breathe the cavity and be equipped with valve rod subassembly (3), the sealed back-fire relief part (4) that is equipped with between intake chamber (2) and the breathing cavity of valve body (1) lower part, breathe cavity upper portion and be equipped with position sensor (5), pressure sensor (6) and flame sensor (7).
2. An on-line monitorable fire retardant breather valve according to claim 1: the method is characterized in that: the breathing chamber comprises an inhalation chamber (8) and an exhalation chamber (9).
3. An on-line monitorable fire retardant breather valve according to claim 1: the method is characterized in that: the fire retardant component (4) comprises a fire retardant grid (41) and a pressure ring.
4. An on-line monitorable fire retardant breather valve according to claim 1: the method is characterized in that: the lower part of the valve body (1) is provided with a clamping groove for fixing the fire retardant component (4).
5. An on-line monitorable fire retardant breather valve according to claim 2: the method is characterized in that: the valve stem assembly (3) comprises an inhalation valve stem for an inhalation chamber and an exhalation valve stem (31) for an exhalation chamber.
6. An on-line monitorable fire retardant breather valve according to claim 1: the method is characterized in that: the middle part of the valve cover (11) is provided with a through hole, and a blocking cover (12) is arranged at the through hole.
7. An on-line monitorable fire retardant breather valve according to claim 5: the method is characterized in that: the blocking cover (12) is provided with an inner hole, and the inner hole is coupled with the upper end of the expiratory valve rod (31).
8. An on-line monitorable fire retardant breather valve according to claim 2: the method is characterized in that: and a rain-proof cap (81) is arranged at the port of the air suction cavity (8).
9. An on-line monitorable fire retardant breather valve according to claim 1: the method is characterized in that: and a flange plate (13) is arranged at the lower part of the air inlet chamber (2).
10. A monitoring system for on-line monitoring of a firestop breather valve as defined in any one of claims 1 to 9, wherein:
the position sensor (5) monitoring method is characterized in that the position of the expiratory valve disc is sensed and converted into a corresponding level signal, the level signal is converted into a physical signal by the signal processor, the signal processor transmits the signal to the AI module, the AI module finishes signal acquisition, the acquired data are transmitted to the CPU, the CPU finishes data processing, then the data are transmitted to the computer, and the DCS monitors the change of the physical signal, so that the real-time height change of the valve disc is judged;
the pressure sensor (6) monitoring method is characterized in that pressure is converted into a current signal through a pressure transmitter detection unit, the current signal is converted into a physical signal through a signal processor, the signal processor is connected to an AI module of the DCS, the AI module finishes signal acquisition and transmits acquired data to a computer in a sorting mode, the DCS monitors real-time change of the physical signal, when pressure data acquired and displayed by the DCS is different from a set value, a CPU transmits the signal to an AO module, the AO module transmits the signal to an alarm, an alarm host alarms, and stops alarming until the pressure is restored to a set range or a power supply is cut off;
the flame sensor (7) monitoring method is that flame is monitored through an infrared receiving tube, the brightness of the flame is converted into a level signal with high and low changes, the level signal is converted into a physical signal by a signal processor, the signal processor is connected with a DCS system, an A/D converter of the signal processor enables a computer to display a curve of numerical value changes within the range of 0-255, when the computer displays a corresponding numerical value, a CPU transmits the signal to an AO module, the AO module transmits the signal to an alarm, the alarm gives an alarm, meanwhile, the CPU receives an instruction of an operator and internal linkage, transmits the signal to a DO module, and the DO module transmits the signal to air source switch control equipment, so that the air source switching control equipment is controlled to be switched off.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120423036.6U CN215214912U (en) | 2021-02-26 | 2021-02-26 | Can online monitoring back-fire relief breather valve and monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120423036.6U CN215214912U (en) | 2021-02-26 | 2021-02-26 | Can online monitoring back-fire relief breather valve and monitoring system |
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| CN215214912U true CN215214912U (en) | 2021-12-17 |
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| CN202120423036.6U Active CN215214912U (en) | 2021-02-26 | 2021-02-26 | Can online monitoring back-fire relief breather valve and monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458825A (en) * | 2022-02-23 | 2022-05-10 | 深圳市鼎力显示科技有限公司 | A breather valve and LED lamp plate for LED lamp plate |
| CN114739656A (en) * | 2022-03-01 | 2022-07-12 | 江苏复森特种阀门有限公司 | Integrated overflow-preventing fire-retardant breather valve performance test system |
-
2021
- 2021-02-26 CN CN202120423036.6U patent/CN215214912U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458825A (en) * | 2022-02-23 | 2022-05-10 | 深圳市鼎力显示科技有限公司 | A breather valve and LED lamp plate for LED lamp plate |
| CN114458825B (en) * | 2022-02-23 | 2024-05-31 | 深圳市鼎力显示科技有限公司 | Breather valve for LED lamp panel and LED lamp panel |
| CN114739656A (en) * | 2022-03-01 | 2022-07-12 | 江苏复森特种阀门有限公司 | Integrated overflow-preventing fire-retardant breather valve performance test system |
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Address after: 221000 south side of Shidai Avenue, Huaihai International Port District, Xuzhou City, Jiangsu Province Patentee after: Jiangsu Bafang Safety Equipment Co.,Ltd. Country or region after: China Address before: 221000 south side of Shidai Avenue, Chengbei Development Zone, Quanshan District, Xuzhou City, Jiangsu Province Patentee before: XUZHOU BAFANG SAFETY DEVICE CO.,LTD. Country or region before: China |