CN212481296U - Improved gas continuous automatic distribution system - Google Patents
Improved gas continuous automatic distribution system Download PDFInfo
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- CN212481296U CN212481296U CN202021131821.6U CN202021131821U CN212481296U CN 212481296 U CN212481296 U CN 212481296U CN 202021131821 U CN202021131821 U CN 202021131821U CN 212481296 U CN212481296 U CN 212481296U
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Abstract
The utility model provides an improved gas continuous automatic distribution system, a control cabinet and a distribution cabinet are respectively arranged in two rooms separated by a wall body; electronic components in the gas distribution cabinet are all placed inside the positive pressure explosion-proof box, and the air pressure inside the positive pressure explosion-proof box is higher than the external air pressure; each air inlet of the air mixing tank is correspondingly connected with one air distribution branch, each air distribution branch comprises two air inlet units, the two air inlet units are combined through a pipeline and are sequentially communicated with the automatic flow regulator and the laminar flow meter, and finally, the air inlet units are communicated with the corresponding air inlets of the air mixing tank after passing through the manual valve; the air outlet of the air mixing tank is respectively communicated with the air inlets of the third air control valve and the fourth air control valve through pipelines; the air outlet of the fourth pneumatic control valve is communicated to the outside of the plant through an extension pipeline; and the air outlet of the third pneumatic control valve is communicated to the mixed gas collecting equipment through a pipeline. The utility model discloses the security is high, can satisfy the demand that the more gas of customer mixes, and structural design is convenient for equipment maintenance and maintenance.
Description
Technical Field
The utility model belongs to the technical field of mechanical engineering, especially, relate to a continuous automatic gas distribution system of improved generation gas.
Background
With the development of petrochemical industry, the attention of people has been paid to fuel gas as a chemical basic raw material and a novel fuel, the fuel gas is used as the fuel, the fuel gas has high heat value, no smoke dust and carbon residue, the operation is convenient, the fuel gas widely enters the living field of people, and the fuel gas is a mixture of a plurality of gases, so a fuel gas distribution system is necessary.
The applicant has proposed in 2002 a chinese patent with publication number CN2577098Y, and provided a continuous and automatic gas distribution system, which adopts a gas mixing tank to supply gas through three gas distribution branches with the same structure, each gas distribution branch only supplies a single gas to convey, and the requirement of mixing more than three gases cannot be met; and although the pneumatic control valve is adopted to control the on-off of the gas distribution branch, the pneumatic control valve does not generate electric spark phenomenon, so that the safety is ensured to a greater extent, but the system still comprises a part of indispensable electric elements, and the potential safety hazard of the system structure still exists.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an improved gas continuous automatic distribution system, which can solve the above technical problems with the lowest improvement cost. The scheme is as follows:
the improved gas continuous automatic distribution system comprises a control cabinet and a gas distribution cabinet, wherein the two cabinet bodies are respectively arranged in two room spaces separated by a wall body, a lead bundle between the control cabinet and the gas distribution cabinet is wrapped by a sealing insulating sleeve, and the sealing insulating sleeve penetrates through the wall body and is in sealing connection with the wall body;
the positive pressure explosion-proof box body is further arranged in the gas distribution cabinet, electronic components in the gas distribution cabinet are all placed inside the positive pressure explosion-proof box body, and the air source is utilized to inflate the inside of the positive pressure explosion-proof box body, so that the air pressure inside the positive pressure explosion-proof box body is higher than the external air pressure.
Furthermore, each air inlet of the air mixing tank is correspondingly connected with one air distribution branch, each air distribution branch comprises two air inlet units, each air inlet unit is formed by sequentially communicating a filter and an air control valve through a pipeline, each air inlet unit is responsible for connecting one air source, the two air inlet units are combined through the pipeline after sequentially passing through the filter and the air control valve, and then sequentially communicated with the automatic flow regulator and the laminar flow meter, and finally communicated with the corresponding air inlet of the air mixing tank after passing through the manual valve; the pneumatic control valve of each air inlet unit is respectively connected with a corresponding electromagnetic valve through a pipeline; each electromagnetic valve is electrically connected with the industrial control computer through a lead.
Further, an air outlet of the air mixing tank is respectively communicated with air inlets of a third air control valve and a fourth air control valve through pipelines; the air outlet of the fourth pneumatic control valve is communicated to the outside of the plant through an extension pipeline; the air outlet of the third pneumatic control valve is communicated to the mixed gas collecting equipment through a pipeline; the third pneumatic control valve and the fourth pneumatic control valve are respectively connected with the corresponding third electromagnetic valve and the fourth electromagnetic valve through pipelines; the third electromagnetic valve and the fourth electromagnetic valve are respectively and electrically connected with the industrial control computer through wires.
The utility model discloses the security is high, can satisfy the demand that the more gas of customer mixes, and structural design is convenient for equipment maintenance and maintenance.
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 diagram of the structural layout of the present system;
FIG. 2 is a schematic perspective view of two gas distribution branches, each of which is provided with two gas inlet units, each of which can be accessed with a gas;
FIG. 3 is a schematic diagram illustrating a single distribution branch;
FIG. 4 is a schematic view of the internal structure of the gas mixing tank;
3 fig. 35 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 in 3 fig. 34 3. 3
In the figure, 1-control cabinet, 2-display, 3-industrial control computer, 4-wall, 5-gas distribution cabinet, 6-manual valve, 7-laminar flow meter, 8-positive pressure explosion-proof box, 9-automatic flow regulator, 10-first air control valve, 11-second air control valve, 12-first filter, 13-second filter, 14-third air control valve, 15-fourth air control valve, 16-gas mixing tank, 17-connecting pipeline, 18-first gas, 19-second gas, 20-differential pressure sensor, 21-gas mixing collecting equipment, 22-direct pressure sensor, 23-temperature sensor, 24-signal amplifier, 25-first electromagnetic valve, 26-second electromagnetic valve, 27-gas leakage alarm, 28-air outlet, 29-fourth air mixing head, 30-air mixing pipe, 31-auxiliary port, 32-third air mixing head, 33-second air mixing head, 34-first air mixing head, 35-air inlet, 36-third electromagnetic valve, 37-fourth electromagnetic valve, 38-A path connecting pipe and 39-B path connecting pipe.
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.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a schematic diagram of the structural layout of the system, and in order to enhance the safety of gas distribution, the system adopts a two-stage gas-electric physical isolation structure, and the first-stage gas-electric physical isolation structure is as follows: this system includes two cabinets: the air distribution cabinet comprises a control cabinet 1 and an air distribution cabinet 5, wherein the two cabinet bodies are respectively arranged in two room spaces which are separated by a wall body 4, a conductor bundle between the control cabinet 1 and the air distribution cabinet 5 is wrapped by a sealing insulating sleeve, and the sealing insulating sleeve penetrates through the wall body 4 and is in sealing connection with the wall body 4; the control cabinet 1 is also provided with a control circuit besides a 2-display and a 3-industrial control computer, an operator can perform gas distribution control operation only by operating corresponding control buttons or equipment of the control cabinet 1 in the gas distribution process, and the gas on-off of the gas distribution cabinet 5 is controlled by a gas control valve, so that the gas distribution safety is improved;
the second-stage gas and electricity physical isolation structure is as follows: be equipped with the explosion-proof box of malleation 8 in distribution cabinet 5, electronic components in the distribution cabinet all inside explosion-proof box of malleation 8, electronic components includes: a differential pressure sensor 20, a direct pressure sensor 22, a temperature sensor 23, and a signal amplifier 24; utilize air source to inflate positive pressure explosion-proof box 8 inside, make 8 inside atmospheric pressure of positive pressure explosion-proof box be higher than external atmospheric pressure to when taking place the gas and leaking, prevent the gas to get into in the positive pressure explosion-proof box and contact with electronic component, thereby greatly reduced electronic components produces the risk that the spark arouses the conflagration.
In the utility model, the gas mixing tank 16 is also arranged in the gas distribution cabinet; as shown in fig. 4, the gas mixing tank 16 is made of corrosion-resistant metal plate into a circular tank shape, and one end of the gas mixing tank is provided with a plurality of gas inlets 35 for connecting external gas supply; the number of inlets 35 is generally determined by the desired gas ratio and may be two, three, … …. The other end of the gas mixing tank 16 is provided with a gas outlet 28 for delivering the working gas after the mixture synthesis to gas equipment. One side of the gas mixing tank 16 is provided with an auxiliary port 31 for servicing or other needs. The gas mixing tank 16 is provided with a gas mixing head for mixing gases with various proportions. The shape of the gas mixing head can be a cone, and the other end is a multi-path gas mixing pipe 30. The number of the gas mixing heads is generally determined according to the number of gases required to be proportioned, and can be two, three, four or … …; four are shown, which are a fourth mixing head 29, a third mixing head 32, a second mixing head 33, a first mixing head 34. The gas mixing tank is characterized in that the gas mixing head is arranged to be a multi-pipe type, and a plurality of gas mixing heads are adopted and respectively formed by connecting a plurality of gas mixing pipes 30 with gas inlets 35. When a plurality of gases are mixed, the gases can be quickly and uniformly mixed through a plurality of gas mixing heads and a plurality of 30-gas mixing pipes to prepare the required working gas.
Each air inlet 35 of the air mixing tank 16 is correspondingly connected with one air distribution branch, each air distribution branch comprises two air inlet units, each air inlet unit is formed by sequentially communicating a filter and an air control valve through a pipeline, each air inlet unit is responsible for connecting one air source, the two air inlet units are combined through the pipeline after sequentially passing through the filter and the air control valve, and then sequentially communicated with the automatic flow regulator 9 and the laminar flow meter 7, and finally communicated with the corresponding air inlet of the air mixing tank 16 after passing through the manual valve 6;
in addition, the utility model is additionally provided with a third pneumatic control valve 14 and a fourth pneumatic control valve 15 behind the gas mixing tank 16, namely, the gas outlet of the gas mixing tank 16 is respectively communicated with the gas inlets of the third pneumatic control valve 14 and the fourth pneumatic control valve 15 through pipelines; the fourth pneumatic control valve 15 is used for exhausting, the gas outlet of the fourth pneumatic control valve is communicated to the outside of the factory building through an extension pipeline (not shown), residual gas in the gas mixing tank 16 can be discharged to equipment and the outside of the factory building through the extension pipeline, and the gas outlet of the third pneumatic control valve 14 is communicated to mixed gas collecting equipment through a pipeline, so that the mixed gas is controlled to be collected;
the pneumatic control valve of each air inlet unit is respectively connected with a corresponding electromagnetic valve through a pipeline; the third pneumatic control valve 14 and the fourth pneumatic control valve 15 are also respectively connected with a corresponding third electromagnetic valve 36 and a corresponding fourth electromagnetic valve 37 through pipelines; each electromagnetic valve is electrically connected with the industrial control computer 3 through a lead.
Because the manual valve 6 is added, the pipeline of the gas distribution system can be separated by closing the manual valve 6 and each gas control valve, the closed pipeline and the gas mixing tank 16 can be subjected to sectional leakage detection, the beneficial effect of sectional self-checking of the equipment is achieved, and the equipment is convenient to maintain and repair.
Specifically, as shown in a system schematic diagram of fig. 3, which takes one air distribution branch as an example, the first filter 12 and the first pneumatic control valve 10 form one air inlet unit, the second filter 13 and the second pneumatic control valve 11 form the other air inlet unit, and the two air inlet units are combined through a pipeline and then sequentially connected with the automatic flow regulator 9, the laminar flow meter 7 and the air mixing tank 16. The first pneumatic control valve 10 and the second pneumatic control valve 11 are respectively connected with a first electromagnetic valve 25 and a second electromagnetic valve 26 of an external control air circuit through pipelines. A direct pressure sensor 22 and a temperature sensor 23 are arranged at the connecting pipeline of the automatic flow regulator 9 and the laminar flow meter 7. The laminar flow meter 7 is connected to the differential pressure sensor 20 by an external line. The signal amplifier 24 is respectively connected with the industrial personal computer 3, the automatic flow regulator 9, the direct pressure sensor 22 and the temperature sensor 23 through wires. The differential pressure sensor 20 is connected to the automatic flow regulator 9 by a wire and then connected to a signal amplifier 24. The industrial control computer 3 is connected with a first electromagnetic valve 25, a second electromagnetic valve 26 and a gas leakage alarm 27 through wires. Wherein:
and one end of each of the first filter 12 and the second filter 13 is connected with the input end of an external gas pipeline, and the other end of each of the first filter and the second filter is connected with the first pneumatic control valve 10 and the second pneumatic control valve 11. The filter is used for filtering fuel gas, removing rust, trace synthetic condensate of mixed gas and sundries in the mixed gas flowing through a fuel gas pipeline, and ensuring normal work of instruments, meters, sensors, control valves and the like.
The first pneumatic control valve 10 and the second pneumatic control valve 11 are respectively used for controlling the valves to adjust the on and off of fuel gas under the external pneumatic action of the first electromagnetic valve 25 and the second electromagnetic valve 26. Compared with the control of the electromagnetic valve in the prior art, the valve has remarkable fire-proof safety.
The automatic flow regulator 9 is used for automatically regulating the flow of gas flowing through the pipeline under the control of the industrial control computer 3, and the laminar flow meter 7 is used for forming stable laminar flow of gas flowing through the pipeline, so that the flow of the gas can be accurately measured.
The differential pressure sensor 20 is arranged in a pressure tapping hole of the laminar flow meter 7 and is used for collecting and accurately measuring a gas flow signal flowing through a pipeline and transmitting the accurately measured signal to the automatic flow regulator 9 or the signal amplifying circuit 8.
The temperature sensor 23 is used for collecting the temperature measurement signal of the fuel gas flowing through the pipeline, amplifying the temperature measurement signal into a matched temperature measurement signal through the signal amplification circuit 8, and transmitting the temperature measurement signal to the industrial control computer 3.
The direct pressure sensor 22 is used for collecting pressure measurement signals of fuel gas flowing through a pipeline, amplifying the pressure measurement signals into matched pressure measurement signals through the signal amplification circuit 8, and transmitting the matched pressure measurement signals to the industrial control computer 3.
The gas leakage alarm 27 is used for collecting gas leakage signals flowing through the surrounding of the system environment and transmitting the gas leakage signals to the industrial control computer 3.
The signal amplifier 24 is used for collecting measurement signals of flow, temperature, direct pressure and the like of gas flowing through a pipeline respectively from the differential pressure sensor 20, the temperature sensor 23, the direct pressure sensor 22 and the automatic flow regulator 9, amplifying the measurement signals and transmitting the measurement signals to the industrial personal computer 3, and transmitting signals for controlling the flow of the industrial personal computer 3 to the automatic flow regulator 9.
The industrial control computer 3 is used for receiving gas proportioning setting parameters input by a human-computer interface, classifying, comparing, calculating, processing, storing, displaying and the like differential pressure measurement signals, temperature measurement signals, direct pressure measurement signals and the like of gas input by the signal amplifier 24, transmitting flow control signals to the automatic flow regulator 3, and regulating the proportioning flow of the gas flowing through the pipeline; when the work starts or ends, a control signal is sent to the electromagnetic valves (the first electromagnetic valve 25 and the second electromagnetic valve 26) of the air distribution branch corresponding to the air inlet unit, and the corresponding air control valves (the first air control valve 10 and the second air control valve 11) are opened or closed by the electromagnetic valves (the first electromagnetic valve 25 and the second electromagnetic valve 26). When the gas leakage alarm 27 acquires a gas leakage signal, the industrial control computer 3 sends a control instruction in time to close the gas control valves (the first gas control valve 10 and the second gas control valve 11) by the electromagnetic valves (the first electromagnetic valve 25 and the second electromagnetic valve 26) to cut off the input combustible gas, so as to ensure safety.
The first electromagnetic valve 25, the second electromagnetic valve 26, the 36-third electromagnetic valve and the 37-fourth electromagnetic valve receive output control signals of the industrial control computer 3 and are used for controlling the opening and closing of the first pneumatic control valve 10, the second pneumatic control valve 11, the third pneumatic control valve 14 and the fourth pneumatic control valve 15.
The gas mixing tank 16 is used for uniformly mixing the multipath input different gases to prepare the required working gas. In fig. 1, two paths of gas, for example, an a-path connecting pipe 38 and a B-path connecting pipe 39, enter the gas mixing tank 16 to be mixed, and two gas inlets are arranged on a single-path gas distribution branch of the gas mixing cabinet, so that the configuration requirements of a demander on various gases are met. In the configuration process, the first gas 18 and the second gas 19 can be rapidly switched and configured through the first pneumatic control valve 10 and the second pneumatic control valve 11, and the gas interfaces do not need to be replaced. In fact, the embodiment shown in fig. 1 is four gas distribution branches, each gas distribution branch is respectively connected with one gas through two gas inlet units, that is, can be connected with up to eight gases in total, and all or several of the gases are mixed according to the needs.
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 (3)
1. The improved gas continuous automatic distribution system is characterized by comprising a control cabinet and a gas distribution cabinet, wherein the two cabinet bodies are respectively arranged in two rooms separated by a wall body;
the positive pressure explosion-proof box body is further arranged in the gas distribution cabinet, electronic components in the gas distribution cabinet are all placed inside the positive pressure explosion-proof box body, and the air source is utilized to inflate the inside of the positive pressure explosion-proof box body, so that the air pressure inside the positive pressure explosion-proof box body is higher than the external air pressure.
2. The improved gas continuous automatic distribution system according to claim 1, wherein each gas inlet of the gas mixing tank is correspondingly connected with a gas distribution branch, each gas distribution branch comprises two gas inlet units, each gas inlet unit is formed by sequentially communicating a filter and a pneumatic control valve through a pipeline, each gas inlet unit is responsible for connecting a gas source, the two gas inlet units are sequentially combined through the pipeline after passing through the filter and the pneumatic control valve, and are sequentially communicated with the automatic flow regulator and the laminar flow meter, and finally are communicated with the corresponding gas inlets of the gas mixing tank after passing through the manual valve; the pneumatic control valve of each air inlet unit is respectively connected with a corresponding electromagnetic valve through a pipeline; each electromagnetic valve is electrically connected with the industrial control computer through a lead.
3. The improved gas continuous automatic distribution system according to claim 1, wherein a gas outlet of the gas mixing tank is respectively communicated with gas inlets of a third gas control valve and a fourth gas control valve through pipelines; the air outlet of the fourth pneumatic control valve is communicated to the outside of the plant through an extension pipeline; the air outlet of the third pneumatic control valve is communicated to the mixed gas collecting equipment through a pipeline; the third pneumatic control valve and the fourth pneumatic control valve are respectively connected with the corresponding third electromagnetic valve and the fourth electromagnetic valve through pipelines; the third electromagnetic valve and the fourth electromagnetic valve are respectively and electrically connected with the industrial control computer through wires.
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| CN202021131821.6U CN212481296U (en) | 2020-06-18 | 2020-06-18 | Improved gas continuous automatic distribution system |
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| CN202021131821.6U CN212481296U (en) | 2020-06-18 | 2020-06-18 | Improved gas continuous automatic distribution system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906823A (en) * | 2023-07-17 | 2023-10-20 | 深圳沃飞科技有限公司 | Integrated comprehensive control box for conveying various gases |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906823A (en) * | 2023-07-17 | 2023-10-20 | 深圳沃飞科技有限公司 | Integrated comprehensive control box for conveying various gases |
| CN116906823B (en) * | 2023-07-17 | 2024-05-31 | 深圳沃飞科技有限公司 | Integrated comprehensive control box for conveying various gases |
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