A kind of air exchange system of natural gas receiving ball tube
Technical field
The utility model relates to natural gas facility service technique field, a kind of specific ventilation system of natural gas receiving ball tube
System.
Background technique
Long distance pipeline needs the intracorporal natural gas of empty clinder in advance when Gas Stations receiving ball tube is overhauled, then into
The displacement of row nitrogen, the qualified standard of nitrogen displacement is natural Gas content less than 2%, but because receiving ball tube and separator interior
Labyrinth there may be interior leakage along with its seal ball-valve, leading to the intracorporal gas replacement of cylinder, there are halfway feelings
Condition, so needing to carry out concentration of natural gas detection from blind plate relief hole again before opening its blind plate, to ensure operation safety.Cause
This, is badly in need of a kind of receiving ball tube air interchanger, can detect to the concentration of natural gas during ventilation.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of air exchange system of natural gas receiving ball tube, structure letters
It is single, it is easy to detect quick, it is ensured that operation safety.
The technical solution that the utility model solves above-mentioned technical problem is as follows:
A kind of air exchange system of natural gas receiving ball tube, including be sequentially communicated by pipeline air accumulator, receiving ball tube and
Coal gas detection device, the side wall of the receiving ball tube offer gas outlet close to the position of its outlet side, and the one of the gas outlet
Side is equipped with air collector, and the gas outlet is connected to by pipeline with the air collector;Between the air accumulator and the receiving ball tube
Pipeline be equipped with gasing pump, the outlet side end of the receiving ball tube is equipped with the blind plate for closing the outlet side, described
It is equipped with bindiny mechanism between coal gas detection device and the blind plate, offers relief hole on the blind plate, the relief hole passes through
The bindiny mechanism is detachably connected with the detection device, and the gasing pump send the gas in the air accumulator to the receipts
It serves a ball in cylinder, the gas in the receiving ball tube is drained into the air collector.
The beneficial effects of the utility model are: the gas in air accumulator is gradually sent to transmitting-receiving by gasing pump when maintenance
Combustion gas in ball cylinder, while in receiving ball tube is gradually collected in air collector;During ventilation, coal gas detection device is examined in real time
The concentration of combustion gas in receiving ball tube is surveyed, until the gas concentration in receiving ball tube reaches safe concentration value;Coal gas detection device with
Relief hole on blind plate is detachably connected by bindiny mechanism, convenient for disassembly and assembly.The utility model structure is simple, easy to detect fast
Victory, precision are high, it is ensured that operation safety.
Based on the above technical solution, the utility model can also do following improvement.
Further, the coal gas detection device is coal gas detection instrument.
Beneficial effect using above-mentioned further scheme is that the concentration of combustion gas in receiving ball tube is detected by coal gas detection instrument,
Easy to detect quick, precision is high.
Further, the bindiny mechanism includes fixed cylinder, gas cylinder and connecting cylinder, and the outer wall of the fixed cylinder is close to it
The position of inlet end is equipped with external screw thread, and it is threadedly coupled with the relief hole, and the fixing barrel casing is located at the gas cylinder
On, internal screw thread is equipped at the gas outlet of the gas cylinder, the outer wall of the connecting cylinder is equipped with outer spiral shell close to the position of its inlet end
Line, the inlet end of the connecting cylinder are threadedly coupled with the gas outlet of the gas cylinder, and the outlet side of the connecting cylinder passes through pipeline
It is connected to the coal gas detection instrument.
When beneficial effect using above-mentioned further scheme is installation, the inlet end of fixed cylinder is threadedly coupled with relief hole,
The outlet side of gas cylinder is threadedly coupled with the inlet end of connecting cylinder, convenient for disassembly and assembly;Meanwhile different blind plates needs to design and its phase
Matched fixed cylinder and gas cylinder, connecting cylinder is general, with strong applicability.
Further, the pipeline between the air accumulator and the receiving ball tube is admission line, the admission line and institute
It states and is equipped with connector between the gas outlet of air accumulator, the inlet end of the admission line passes through the connector and the air accumulator
Gas outlet be detachably connected.
Beneficial effect using above-mentioned further scheme be it is convenient for disassembly and assembly, be conveniently replaceable air accumulator.
Further, the connector is sleeve, and the inner wall of the sleeve is respectively equipped with internal screw thread by the position of two close end, institute
State at the gas outlet of air accumulator and be equipped at the inlet end of the admission line external screw thread, the both ends of the sleeve respectively with
The inlet end of the gas outlet of the air accumulator and the admission line is threadedly coupled.
Beneficial effect using above-mentioned further scheme is the simple in construction, easy to disassemble and assemble of sleeve.
Further, the gas stored in the air accumulator is nitrogen.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model;
Fig. 2 is the structural representation of bindiny mechanism in the utility model;
Fig. 3 is the structural schematic diagram that bindiny mechanism connect with coal gas detection instrument in the utility model;
Fig. 4 is the structural schematic diagram of fixed cylinder in the utility model;
Fig. 5 is the structural schematic diagram of gas cylinder in the utility model;
Fig. 6 is the structural schematic diagram of connecting cylinder in the utility model;
Fig. 7 is the structural schematic diagram that connecting cylinder is connect with coal gas detection instrument in the utility model;
Fig. 8 is the structural schematic diagram of connector in the utility model.
In attached drawing, parts list represented by the reference numerals are as follows:
1, air accumulator, 2, receiving ball tube, 3, coal gas detection device, 4, air collector, 5, gasing pump, 6, fixed cylinder, 7, air guide
Cylinder, 8, connecting cylinder, 9, sleeve.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
As shown in Figures 1 to 8, the utility model provides a kind of air exchange system of natural gas receiving ball tube, including passes through pipe
Air accumulator 1, receiving ball tube 2 and the coal gas detection device 3 that road is sequentially communicated, the interior gas stored of air accumulator 1 is nitrogen, receives and dispatches ball
The side wall of cylinder 2 offers gas outlet close to the position of its outlet side, and the side of gas outlet is equipped with air collector 4, and gas outlet passes through pipe
Road is connected to air collector 4;Pipeline between air accumulator 1 and receiving ball tube 2 is equipped with gasing pump 5, the outlet side end of receiving ball tube 2
Portion is equipped with the blind plate for closing the outlet side, and bindiny mechanism is equipped between coal gas detection device 3 and blind plate, is opened up on blind plate
Have a relief hole, relief hole is detachably connected by bindiny mechanism with detection device 3, gasing pump 5 by the gas in air accumulator 1 send to
In receiving ball tube 2, the gas in receiving ball tube 2 is drained into air collector 4.It, will be in air accumulator 1 by gasing pump 5 when maintenance
Gas gradually send to receiving ball tube 2, while the combustion gas in receiving ball tube 2 is gradually collected in air collector 4;The process of ventilation
In, the concentration of combustion gas in 3 real-time detection receiving ball tube 2 of coal gas detection device, until the gas concentration in receiving ball tube 2 reaches peace
Full concentration value (concentration value of combustion gas is lower than 2%);Coal gas detection device 3 is detachable by bindiny mechanism with the relief hole on blind plate
Connection, it is convenient for disassembly and assembly.The utility model structure is simple, and easy to detect quick, precision is high, it is ensured that operation safety.
In the utility model, coal gas detection device 3 is coal gas detection instrument, and coal gas detection instrument can be used for petrochemical industry, environment
The industries such as accident, natural gas, liquefied petroleum gas, coal gas detect various combustible gases, and structure is simple, and detection accuracy is high.In addition, combustion gas
Detector carries acousto-optic vibration alarm, and after the completion of ventilation, acousto-optic vibration alarm automatic alarm therein reminds staff
It can start operation, it is ensured that operation safety.
As shown in Figures 2 to 7, in the utility model, bindiny mechanism includes fixed cylinder 6, gas cylinder 7 and connecting cylinder 8, Gu
The outer wall of safety barrel 6 close to the position of its inlet end be equipped with external screw thread, relief hole have internal screw thread, the inlet end of fixed cylinder 6 with let out
Hole is pressed to be threadedly coupled.Fixed cylinder 6 is set on gas cylinder 7, and the inner wall of fixed cylinder 6 is close to the outer wall of gas cylinder 7, is not had therebetween
It has the gap, it is ensured that the combustion gas in receiving ball tube 2 is directly entered in gas cylinder 7;Internal screw thread is equipped at the gas outlet of gas cylinder 7, even
The outer wall of connect cylinder 8 is equipped with external screw thread, the inlet end of connecting cylinder 8 and the gas outlet screw thread of gas cylinder 7 close to the position of its inlet end
The outlet side of connection, connecting cylinder 8 is connected to by pipeline with coal gas detection instrument, the air inlet of the outlet side of connecting cylinder 8 and corresponding pipeline
End welds together.When installation, the inlet end of fixed cylinder 6 is threadedly coupled with relief hole, the outlet side of gas cylinder 7 and connecting cylinder 8
Inlet end be threadedly coupled, it is convenient for disassembly and assembly.
It should be noted that different blind plates needs to design matched fixed cylinder 6 and gas cylinder 7, connecting cylinder 8 is logical
With with strong applicability, save the cost.In addition, the internal diameter of fixed cylinder 6 is less than the internal diameter of receiving ball tube 2, make full use of P=F/S's
Principle, the ingenious pressure for increasing combustion gas, is fed directly to coal gas detection instrument by pipeline for the combustion gas in receiving ball tube 2.
As shown in figure 8, the pipeline between air accumulator 1 and receiving ball tube 2 is admission line, air inlet pipe in the utility model
Connector is equipped between road and the gas outlet of air accumulator 1, the inlet end of admission line passes through the gas outlet of connector and air accumulator 1
It is detachably connected;Connector preferentially uses sleeve 9, and the inner wall of sleeve 9 is respectively equipped with internal screw thread, air accumulator by the position of two close end
It is equipped with external screw thread at 1 gas outlet and at the inlet end of admission line, the both ends of sleeve 9 outlet with air accumulator 1 respectively
The inlet end of mouth and admission line is threadedly coupled, convenient for disassembly and assembly, time saving and energy saving so that staff replaces air accumulator 1.
The working principle of the utility model is as follows:
When installation, the gas outlet of air accumulator 1 is connect by sleeve 9 with admission line first, the then air inlet of fixed cylinder 6
End is threadedly coupled with relief hole, and the outlet side of gas cylinder 7 is threadedly coupled with the inlet end of connecting cylinder 8;
When ventilation, the nitrogen in air accumulator 1 is gradually delivered in receiving ball tube 2 by gasing pump 5, the combustion in receiving ball tube 2
Gas is gradually discharged under the action of nitrogen, and collects in air collector 4;In scavenging period, the transmitting-receiving of coal gas detection instrument real-time detection
The concentration of combustion gas in ball cylinder 2, when (nitrogen is dense i.e. in receiving ball tube 2 lower than 2% for the gas concentration that coal gas detection instrument detects
When degree is higher than 98%), acousto-optic vibration alarm automatic alarm in coal gas detection instrument, staff starts operation, avoids occurring
Safety accident, securely and reliably.
It should be noted that air accumulator 1, receiving ball tube 2 and air collector 4 are all made of the prior art, directly adopt natural
Common air accumulator 1, receiving ball tube 2 and air collector 4 in gas conveying.
It should be noted that gasing pump 5 and coal gas detection instrument involved by the utility model are all made of the prior art, gas transmission
Pump 5 and coal gas detection instrument are electrically connected with controller (model TC-SCR), between controller and gasing pump 5 and coal gas detection instrument
Control circuit be the prior art.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.