CN206701185U - Free-piston type gas pressure adaptation - Google Patents

Abstract

The utility model discloses a pressure matching device, in particular to a free piston type gas pressure matching device. The free piston type gas pressure matcher has the following structure: the power cylinder (1) communicates with the compression cylinder (2), and the piston of the power cylinder (1) and the piston of the compression cylinder (2) are connected to the same piston rod (8) , the piston rod (8) is supported on the intermediate partition (9), and the pipeline between the power cylinder (1) and the air storage tank (4) is provided with an air distribution slide valve (3) and a pressure transmitter (6) and multi-core regulating valve (7). In the utility model, the expansion of high-pressure gas and the compression of low-pressure gas are carried out in the power cylinder and the compression cylinder respectively. The non-contact of two gases with different energy qualities eliminates the irreversible loss caused by the mixing of gases with different energy qualities and improves the efficiency.

Description

Free Piston Gas Pressure Matcher

technical field

The utility model relates to a pressure matching device, in particular to a free piston type gas pressure matching device. It is mainly used for the mixing of two gases with different pressures, with the main purpose of improving the mixing efficiency.

Background technique

The gas pressure matcher is a device that mixes high and low pressure gases to generate intermediate pressure gas. The jet pressure matcher used at present produces momentum and energy exchange in the mixing of two gases, resulting in irreversible loss, which reduces the efficiency of the jet pressure matcher.

Contents of the invention

The utility model provides a free-piston gas pressure matching device for solving the above-mentioned technical problems, which eliminates the irreversible loss caused by the mixing of gases with different energies and improves the efficiency.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The free piston type gas pressure matcher has the following structure: the power cylinder is connected with the compression cylinder, the piston of the power cylinder and the piston of the compression cylinder are connected on the same piston rod, the piston rod is supported on the middle partition, and the power cylinder and the gas storage The pipeline between the tanks is equipped with a gas distribution slide valve, a pressure transmitter and a multi-core regulating valve.

The above-mentioned pressure transmitter is installed on the exhaust pipe of the gas storage tank, the air distribution slide valve is installed on the power cylinder, and the multi-core regulating valve is installed on the intake pipe of the power cylinder.

The gas outlets of the above-mentioned power cylinder, compression cylinder and gas distribution slide valve are connected with the gas storage tank through pipelines, and a check valve is installed on each pipeline.

The above-mentioned power cylinder has the same stroke as the compression cylinder.

The above-mentioned connection between the power cylinder and the compression cylinder and the intermediate partition is fixed at one end and movable at the other end.

The connection between the above-mentioned power cylinder and the compression cylinder and the intermediate partition is that both ends are movable.

The air inlet and the air outlet of the above-mentioned compression cylinder are equipped with valve plates, and the air inlet valve plates and the exhaust port valve plates of the compression cylinder are installed on the middle partition.

The central hole of the above-mentioned intermediate partition is equipped with a packing body.

Owing to adopting above-mentioned technical scheme, yes, the utility model has following characteristics and effect:

The free-piston pressure matcher of the utility model is different from the free-piston gas turbine engine. The high-temperature and high-pressure gas of the free-piston gas turbine is produced by the energy generated by fuel combustion, and the high-pressure gas of the free-piston pressure matcher is supplied externally. . The free-piston pressure matcher of the utility model is also different from the high-temperature and low-temperature gases of the Stirling engine to perform heat exchange to transfer energy. In the free piston type pressure matching device of the utility model, the high-pressure gas after decompression and the low-pressure gas after boosting are mixed into medium-pressure gas for use by consumers. The free piston type pressure matcher of the utility model can be connected in parallel to increase the flow rate, or can be connected in series to increase the pressure. The free piston type pressure matching device of the utility model is mainly used for mixing two kinds of different pressure gases, and has higher efficiency than the jetting type pressure matching device. It can be used for the mixing of two different pressure steams in industries such as electric power, petrochemical paper making, etc., as well as the mixing of two different pressure natural gases in the oil and gas industry, and can be used for the recovery of vented gases such as flare gas.

The free piston type pressure matching device of the utility model expands high-pressure gas and compresses low-pressure gas respectively in a power cylinder and a compression cylinder. The non-contact of two gases with different energy qualities eliminates the irreversible loss caused by the mixing of gases with different energy qualities and improves the efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure, 1. Power cylinder, 2. Compression cylinder, 3. Air distribution slide valve, 4. Air storage tank, 5. One-way valve, 6. Pressure transmitter, 7. Multi-core regulating valve, 8. Piston rod , 9, the middle partition.

detailed description

Below in conjunction with embodiment the utility model is described in the next step. The following examples are only specific examples of the utility model. In order to make the purpose, technical solutions and advantages of the utility model clear at a glance, the utility model will be further described in detail below in conjunction with the accompanying drawings and examples.

As shown in Figure 1, the free piston type gas pressure matching device of the present utility model has the following structure:

The power cylinder 1 communicates with the compression cylinder 2, the piston of the power cylinder 1 and the piston of the compression cylinder 2 are connected on the same piston rod 8, and the piston rod 8 is supported on the middle partition 9, and the center hole of the middle partition 9 is equipped with filler body to prevent the gas in the power cylinder and the compression cylinder from leaking into each other; the pipeline between the power cylinder 1 and the gas storage tank 4 is provided with an air distribution slide valve 3, a pressure transmitter 6 and a multi-core regulating valve 7, and the pressure changes The transmitter 6 is installed on the exhaust pipe of the air storage tank 4, the air distribution slide valve 3 is installed on the power cylinder 1, and the multi-core regulating valve 7 is installed on the intake pipe of the power cylinder 1. The air outlets of the power cylinder 1, the compression cylinder 2 and the gas distribution slide valve 3 are connected with the gas storage tank 4 through pipelines, and a check valve 5 is installed on each pipeline.

The diameters of the power cylinder 1 and the compression cylinder 2 can be the same or different, and the strokes of the power cylinder 1 and the compression cylinder 2 are the same. The connection between the power cylinder 1 and the compression cylinder 2 and the intermediate partition 9 can be fixed at one end, and the other end is movable, or both ends are movable. The air inlet and air outlet of the compression cylinder 2 are equipped with valve plates to control the inlet and outlet pressures.

The working principle of the utility model is as follows:

The high-pressure gas enters the gas distribution slide valve 3 through the multi-core regulating valve 7, and then enters the power cylinder 1 to push the piston to move, and drives the piston of the compression cylinder 2 through the piston rod to compress the low-pressure intake air. Control method: pressure control (flow control), install a pressure transmitter on the exhaust pipe of the gas storage tank, when the pressure rises, the multi-core regulating valve on the intake pipe of the power cylinder closes. The multi-core regulating valve reduces the throttling loss compared with the single-core regulating valve.

The above-mentioned embodiment only expresses one implementation mode of the present utility model, and its description is relatively specific and detailed, but it should not be understood as limiting the patent scope of the present utility model. It should be pointed out that those skilled in the art can make some changes and modifications without departing from the present utility model, and these all belong to the protection scope of the present utility model.

Claims (8)

1. free-piston type gas pressure adaptation, it is characterised in that structure is as follows：Power cylinder（1）With compression cylinder（2）UNICOM, move Power cylinder（1）Piston and compression cylinder（2）Piston be associated in same root piston rod（8）On, piston rod（8）Branch is in central dividing plate（9） On, distribution guiding valve（3）Mounted in power cylinder（1）Upper, pressure transmitter（6）With multicore regulating valve（7）.

2. free-piston type gas pressure adaptation according to claim 1, it is characterised in that described pressure transmitter （6）Installed in air accumulator（4）Blast pipe on, distribution guiding valve（3）Installed in power cylinder（1）On, multicore regulating valve（7）It is arranged on Power cylinder（1）Air inlet pipe on.

3. free-piston type gas pressure adaptation according to claim 1, it is characterised in that described power cylinder（1）、 Compression cylinder（2）And distribution guiding valve（3）Gas outlet pass through pipeline and air accumulator（4）Connect, one is respectively mounted on each pipeline unidirectionally Valve（5）.

4. free-piston type gas pressure adaptation according to claim 1, it is characterised in that described power cylinder（1）With Compression cylinder（2）Stroke it is identical.

5. free-piston type gas pressure adaptation according to claim 1, it is characterised in that described power cylinder（1）With Compression cylinder（2）With central dividing plate（9）Link to be that one end is fixed, the other end is movable.

6. free-piston type gas pressure adaptation according to claim 1, it is characterised in that described power cylinder（1）With Compression cylinder（2）With central dividing plate（9）Link for both ends be all movable.

7. free-piston type gas pressure adaptation according to claim 1, it is characterised in that described compression cylinder（2）'s Valve block, compression cylinder are housed on air inlet and gas outlet（2）Air inlet valve block and exhaust outlet valve block be arranged on central dividing plate（9） On.

8. free-piston type gas pressure adaptation according to claim 1, it is characterised in that described central dividing plate（9） Centre bore filling body is housed.