Multistage reciprocal rock gas extracts compression device
Technical field
The utility model relates to a kind of gas collecting device, and particularly a kind of multistage reciprocal rock gas extracts compression device.
Background technique
For responding the call of national energy-saving and emission-reduction, it is more and more that China uses the user vehicle of rock gas at present, and for guaranteeing to use the safety of natural user vehicle, the vehicle-mounted natural gas tank of national regulation every two years must carry out pressure test once.Yet the natural gas tank of most vehicles often still has many residual gass in the natural gas tank when censorship.Currently used residual gas recovery plant can only reclaim extra high that part of residual gas pressure, and the remaining most of residual gas in the natural gas tank all is discharged in the atmosphere, has so not only wasted resource, also can cause unnecessary pollution to atmosphere simultaneously.Be difficult to collect the problem of utilization at most of residual gas in the above-mentioned vehicle natural gas tank, up to the present also do not have a kind of good settling mode.
The model utility content
The technical problem that the utility model solved has provided a kind of multistage reciprocal rock gas and has extracted compression device, this model utility main purpose is to solve present natural gas tank when censorship, the residual a large amount of residual air of general meeting in the gas tank, these residual air generally are discharged in the atmosphere, can't be recycled, from causing serious wasting of resources problem.
For solving the problems of the technologies described above, the multistage reciprocal rock gas of the utility model extracts compression device, comprise that gas tank incoming end to be checked, gas holder group and rock gas extract compression set, be connected by connecting pipeline between described gas tank incoming end to be checked and the gas holder group, described natural gas tank extracts compression set and is arranged on the connecting pipeline between gas tank incoming end to be checked and the gas holder group, described rock gas extracts between compression set and the connecting pipeline and is provided with three incoming ends, and described three incoming ends are connected on the connecting pipeline between set four unidirectional gas safety check.
Described rock gas extracts compression set and comprises a fuel tank, No. two fuel tanks, No. three fuel tanks, oil hydraulic pump, relief valve, three three position four-way electromagnetic valves and six oil hydraulic cylinders; Described three three position four-way electromagnetic valves are respectively a three position four-way electromagnetic valve, No. two three position four-way electromagnetic valves, No. three three position four-way electromagnetic valves, described three three position four-way electromagnetic valves are equipped with four access ports, and described four access ports are respectively meta mouth, side position mouth, A access port and B access port; Described six oil hydraulic cylinders are respectively an oil hydraulic cylinder, No. two oil hydraulic cylinders, No. three oil hydraulic cylinders, No. four oil hydraulic cylinders, No. five oil hydraulic cylinders, No. six oil hydraulic cylinders, described six oil hydraulic cylinders are divided into three groups, every group comprises two oil hydraulic cylinders, the described hydraulic push rod that is provided with between the oil hydraulic cylinder in twos, the left and right sides of described oil hydraulic cylinder correspondence respectively are provided with two interfaces and are respectively oil hydraulic cylinder A interface and oil hydraulic cylinder B interface; A described fuel tank is connected in oil hydraulic pump by pipeline, and the delivery outlet of described oil hydraulic pump is connected in the meta mouth of relief valve and three three position four-way electromagnetic valves respectively by connecting pipeline, and the delivery outlet end of described relief valve is connected in fuel tank No. three by connecting pipeline; The side position mouth of a described three position four-way electromagnetic valve and No. two three position four-way electromagnetic valves is connected in fuel tank No. two by connecting pipeline respectively; The side position mouth of described No. three three position four-way electromagnetic valves is connected in fuel tank No. three by connecting pipeline; The A access port of a described three position four-way electromagnetic valve and No. two three position four-way electromagnetic valves and B access port are connected in corresponding separately No. two oil hydraulic cylinders that are provided with and the oil hydraulic cylinder A interface and the oil hydraulic cylinder B interface of No. five oil hydraulic cylinders by connecting pipeline respectively, the A access port of described No. three three position four-way electromagnetic valves is connected in the oil hydraulic cylinder A interface of No. six oil hydraulic cylinders by connecting pipeline, the B access port of described No. three three position four-way electromagnetic valves is connected to the oil hydraulic cylinder B interface of No. five oil hydraulic cylinders and No. six oil hydraulic cylinders by triplate line, and the oil hydraulic cylinder B interface of a described oil hydraulic cylinder and No. three oil hydraulic cylinders is connected in fuel tank No. two by triplate line.
The beneficial effects of the utility model are: but this multistage reciprocal rock gas extracts the residual gas in the compression device effective recycling censorship gas tank, guaranteed that the most of residual gas in the gas tank to be checked can be reclaimed, can avoid the unnecessary energy to run off, effectively saved the energy, also avoided simultaneously environmental pollution, warming for mitigation of global climate also plays a role, and is worth applying widely on market.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the utility model overall structure schematic representation;
Among the figure: 1-gas tank incoming end to be checked, 2-gas holder group, the 3-rock gas extracts compression set, the 4-connecting pipeline, the 5-incoming end, the unidirectional gas safety check of 6-, fuel tank of 7-, No. two fuel tanks of 8-, No. three fuel tanks of 9-, the 10-oil hydraulic pump, the 11-relief valve, the 12-three position four-way electromagnetic valve, three position four-way electromagnetic valve of 121-, No. two three position four-way electromagnetic valves of 122-, No. three three position four-way electromagnetic valves of 123-, the 13-oil hydraulic cylinder, oil hydraulic cylinder of 131-, No. two oil hydraulic cylinders of 132-, No. three oil hydraulic cylinders of 133-, No. four oil hydraulic cylinders of 134-, No. five oil hydraulic cylinders of 135-, No. six oil hydraulic cylinders of 136-, the 14-access port, 141-meta mouth, 142-side position mouth, the 143-A access port, the 144-B access port, the 15-hydraulic push rod, the 16-interface, 161-oil hydraulic cylinder A interface, 162-oil hydraulic cylinder B interface.
Embodiment
As shown in Figure 1, a kind of multistage reciprocal rock gas of the utility model extracts compression device, comprise gas tank incoming end 1 to be checked, gas holder group 2 and rock gas extract compression set 3, be connected by connecting pipeline 4 between described gas tank incoming end 1 to be checked and the gas holder group 2, described natural gas tank extracts compression set 3 and is arranged on the connecting pipeline 4 between gas tank incoming end 1 to be checked and the gas holder group 2, described rock gas extracts between compression set 3 and the connecting pipeline 4 and is provided with three incoming ends 5, described three incoming ends 5 are connected between four set on the connecting pipeline 4 unidirectional gas safety check 6, and described unidirectional gas safety check 6 can prevent that rock gas from extracting compression set 3 gas backstreaming in the process of extraction and compressed natural gas and arriving in the gas tank to be checked.
Described rock gas extracts compression set 3 and comprises fuel tank 7, No. two fuel tanks 8, No. three fuel tanks 9, oil hydraulic pump 10, relief valve 11, three three position four-way electromagnetic valves 12 and six oil hydraulic cylinders 13.
Described three three position four-way electromagnetic valves 12 are respectively three position four-way electromagnetic valve 121, No. two three position four-way electromagnetic valves 122, No. three three position four-way electromagnetic valves 123, described three three position four-way electromagnetic valves 12 are equipped with four access ports 14, and described four access ports are respectively meta mouth 141, side position mouth 142, A access port 143 and B access port 144.
Described six oil hydraulic cylinders 13 are respectively oil hydraulic cylinder 131, No. two oil hydraulic cylinders 132, No. three oil hydraulic cylinders 133, No. four oil hydraulic cylinders 134, No. five oil hydraulic cylinders 135, No. six oil hydraulic cylinders 136, described six oil hydraulic cylinders 13 are divided into three groups, every group comprises two oil hydraulic cylinders 13, be provided with hydraulic push rod 15 between the described oil hydraulic cylinder in twos 13, the left and right sides of described oil hydraulic cylinder 13 correspondence respectively is provided with two interfaces 16 and is respectively oil hydraulic cylinder A interface 161 and oil hydraulic cylinder B interface 162.
A described fuel tank 7 is connected in oil hydraulic pump 10 by connecting pipeline 4, the delivery outlet of described oil hydraulic pump 10 is connected in the meta mouth 141 of relief valve 11 and three three position four-way electromagnetic valves 12 respectively by connecting pipeline 4, the delivery outlet end of described relief valve 11 is connected in fuel tank 9 No. three by connecting pipeline 4.
The side position mouth 142 of a described three position four-way electromagnetic valve 121 and No. two three position four-way electromagnetic valves 122 is connected in fuel tank 8 No. two by connecting pipeline 4 respectively, and the side position mouth 142 of described No. three three position four-way electromagnetic valves 123 is connected in fuel tank 9 No. three by connecting pipeline 4.
The A access port 143 of a described three position four-way electromagnetic valve 121 and No. two three position four-way electromagnetic valves 122 and B access port 144 are connected in corresponding separately No. two oil hydraulic cylinders 132 that are provided with and the oil hydraulic cylinder A interface 161 and the oil hydraulic cylinder B interface 162 of No. five oil hydraulic cylinders 135 by connecting pipeline 4 respectively, the A access port 143 of described No. three three position four-way electromagnetic valves 123 is connected in the oil hydraulic cylinder A interface 161 of No. six oil hydraulic cylinders 136 by connecting pipeline 4, the B access port 144 of described No. three three position four-way electromagnetic valves 123 is connected to the oil hydraulic cylinder B interface 162 of No. five oil hydraulic cylinders 135 and No. six oil hydraulic cylinders 136 by triplate line, and the oil hydraulic cylinder B interface 162 of a described oil hydraulic cylinder 131 and No. three oil hydraulic cylinders 133 is connected in fuel tank 8 No. two by triplate line.
During work, the electromagnetic coil of three three position four-way electromagnetic valves 12 is switched on simultaneously, right position, spool place, this moment, the piston of six oil hydraulic cylinders 13 moved right simultaneously, when the piston of three groups of oil hydraulic cylinders moves to limit position one by one, receive the signal of position limit switch and stop to move, this moment, the electromagnetic coil of three three position four-way electromagnetic valves 12 cut off the power supply simultaneously, spool place meta, the part residual gas in the gas tank to be checked be inhaled into gas tank incoming end 1 to be checked and gas holder group 2 between the left side of tank interior of the hydraulic tank 13 that links to each other of connecting pipeline 4.Then, under the control of little processor and three position four-way electromagnetic valve 12, the piston of an oil hydraulic cylinder 131 and No. two oil hydraulic cylinders 132 begins to move to left, when the piston of an oil hydraulic cylinder 131 and No. two oil hydraulic cylinders 132 moves to left limit position when stopping, No. three oil hydraulic cylinders 133 and No. five oil hydraulic cylinder 135 pistons left side pressure can rise to 3~10MPa, at this moment, the second group of oil hydraulic cylinder i.e. piston of No. three oil hydraulic cylinders 133 and No. four oil hydraulic cylinders 134 begins to move to left under the control of little processor and three position four-way electromagnetic valve 12, when the piston of No. three oil hydraulic cylinders 133 and No. four oil hydraulic cylinders 134 moves to left limit position when stopping, No. five oil hydraulic cylinder 135 pistons left side pressure can rise to 8~20Mpa, this moment the 3rd group of oil hydraulic cylinder promptly the piston of No. five oil hydraulic cylinders 135 and No. six oil hydraulic cylinders 136 under the control of little processor and three position four-way electromagnetic valve 12, begin to move to left.Meanwhile, the first group of oil hydraulic cylinder i.e. piston of an oil hydraulic cylinder 131 and No. two oil hydraulic cylinders 132 begins to move to right under the control of little processor and three position four-way electromagnetic valve 12, is that second circulation prepared.When the piston of No. five oil hydraulic cylinders 135 and No. six oil hydraulic cylinders 136 moves to left limit position when stopping, the high-pressure natural gas of No. five oil hydraulic cylinder 135 pistons left side pressure almost all is pressed in the gas holder group 2.So through a plurality of reciprocation cycle, pressure is reduced to when bearing 0.02MPa in gas tank to be checked, can think and can change next gas tank to be checked by the end-of-job of finding time.