CN212107869U - Drying section of film performance test system for drying - Google Patents

Abstract

The utility model discloses a dry section of film performance test system for drying, its characterized in that: the device comprises a mounting cylinder, wherein a pair of end plates are fixedly connected to two end faces of the mounting cylinder in a sealing manner, at least one pair of jacks are arranged on the pair of end plates in a manner of being opposite to the part of a through area in the mounting cylinder, each pair of jacks are used for inserting and fixing two ends of one drying tube, and a drying film to be tested is arranged on the inner side surface of each drying tube; the hole wall of each pair of jacks is in sealing fit connection with the side walls at the two ends of the drying tube. Adopt the utility model discloses behind the dry section of dry film performance test system, the drying tube cartridge that will await measuring that can be convenient is in an installation section of thick bamboo, and also can be convenient will await measuring the drying tube and take out from an installation section of thick bamboo, promotes the drying performance test efficiency to different drying tubes.

Description

Drying section of film performance test system for drying

Technical Field

The utility model belongs to the film field is used in the drying, concretely relates to gas humidity control device and film performance test system is used to the drying.

Background

The natural gas (the main component is methane gas) needs to be dehydrated, and normal transportation and use of the natural gas can be ensured after water vapor in the natural gas is removed.

The dehydration process of natural gas is that when methane gas mixed with water vapor passes through a pipeline or a device provided with a drying nano-film (or an ion exchange membrane (such as a membrane material with ion exchange performance disclosed in the publication No. CN 101264427) and the application thereof), methane molecules are larger than the pore diameter of the film and cannot permeate through the film; and the aperture of the water molecule is smaller than that of the film, the water molecule is discharged through the drying nano film under the action of pressure difference, and the dried methane continuously flows into the next unit, so that the dehydration and drying of the natural gas are realized.

The patent with publication number CN105087096B in the prior art discloses a "natural gas dehydration device" (see the specification thereof), which includes a "second cylinder" for drying and dehydration, the "second cylinder" is hermetically connected above the first cylinder, the inside of the second cylinder is hollow and the lower end is open, a cylindrical water filtering membrane (the cylindrical water filtering membrane can adopt a ceramic tube with a nano-film for drying on the inner side) is arranged in the second cylinder, the upper end of the water filtering membrane is closed and the lower end is hermetically connected with the upper end of an air-water conduit, the inner cavity of the water filtering membrane is communicated with the air-water conduit, and the side wall of the second cylinder is provided with a first dry gas outlet.

However, the structure of the "natural gas dehydration apparatus" is not easy to attach and detach the "water filtration membrane", and is difficult to test the performance of different "water filtration membranes".

Based on this, the applicant considers designing a drying section of a drying film performance test system with a drying tube easy to disassemble and replace.

Disclosure of Invention

To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a drying section of a drying film performance test system which is easy to disassemble, assemble and replace a drying tube.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the drying section of the film performance test system for drying is characterized in that: the device comprises a mounting cylinder, wherein a pair of end plates are fixedly connected to two end faces of the mounting cylinder in a sealing manner, at least one pair of jacks are arranged on the pair of end plates in a manner of being opposite to the part of a through area in the mounting cylinder, each pair of jacks are used for inserting and fixing two ends of one drying tube, and a drying film to be tested is arranged on the inner side surface of each drying tube; the hole wall of each pair of jacks is in sealing fit connection with the side walls at the two ends of the drying tube.

After the structure of the installation cylinder is adopted, the drying tube to be tested can be conveniently inserted into the installation cylinder, and the drying tube to be tested can also be conveniently taken out of the installation cylinder, so that the drying performance test efficiency of different drying tubes is improved.

Drawings

Fig. 1 is a schematic structural diagram of a drying film performance test system according to the present invention.

Fig. 2 is a schematic structural diagram of a drying film performance test system according to the present invention.

Fig. 3 is a schematic structural view of a water bath tank in a film performance testing system for drying according to the present invention.

Fig. 4 is the structure diagram of the installation cylinder in the drying section of the film performance testing system for drying of the utility model.

Labeled as:

an input section:

1 a methane cylinder;

2, a primary pressure reducing valve;

4, water bath tank: 41 air inlet, 42 air outlet, 43 injection/drainage outlet;

a 5 water valve;

6, a funnel;

7 a transition pipe;

a drying section:

8, a flow meter;

9, a pressure transmitter;

10 a dew point instrument;

12, mounting a cylinder: 121 end plate, 122 stop block, 123 water outlet;

a leak detection device: 11 methane detector, 3 electric control valve for leakage prevention

An output section: 13 buffer tanks, 14 secondary pressure reducing valves, 15 tertiary pressure reducing valves and 16 high fire stoves;

17 a controller.

Detailed Description

The present invention will be described in further detail with reference to the drawings showing a system for testing the performance of a drying film according to the present invention.

As shown in fig. 1 to 4, the film performance testing system for drying includes an input section, a drying section and an output section, wherein an input port of the input section is connected to an air source, an output port of the input section is hermetically connected to an input port of the drying section, an output port of the drying section is hermetically connected to an output port of the output section, and the output section is configured to output the air source dried by the drying section;

the dew-point measuring device further comprises two dew-point meters 10, wherein the two dew-point meters are fixedly arranged outside the drying section and are close to a connecting pipeline at the input side and a connecting pipeline at the output side of the drying section;

the input section comprises a lower gas humidity regulating device.

By adopting the film performance test system for drying, the water vapor content in methane gas at the input side and the output side can be obtained through two dew point meters, so that the drying performance of a drying section can be measured.

The drying section may adopt a conventional drying and dehydrating section structure (for example, "dehydration box" in a high-pressure natural gas dehydration device "disclosed in the technical solution with publication number CN209178339U, or" natural gas dehydration device and natural gas dehydration system with nano-drying film "disclosed in the technical solution with publication number CN 208632474U), which is not described herein again.

The output section can adopt a one-way valve and an empty tank (or an air bag) to recover methane gas; the output section may also employ a gas furnace to consume the vented methane gas.

The gas humidity adjusting device comprises a humidifying tank body, the interior of the humidifying tank body is sealed, and a humidifying structure for increasing the humidity of internal gas flow is arranged on the humidifying tank body; the humidifying tank body is further provided with an air inlet 41 and an air outlet 42 which are hermetically communicated with the interior, the air inlet 41 is used for being connected with an air source, and the air outlet 42 is used for outputting the humidified air source.

The gas humidity adjusting device has the advantages that:

1. the test is easier to be carried out, the test difficulty and the cost are reduced

The gas source adopted in the prior art is often directly connected with a natural gas pipeline to obtain natural gas which is to be dried and contains water vapor, so that the natural gas drying system has high manufacturing cost and larger construction engineering quantity and construction difficulty, and is difficult to be suitable for a performance test of a drying film.

After the gas humidity adjusting device is adopted, the humidifying tank body can be directly matched with the methane gas cylinder 1 for use, and the methane gas cylinder 1 is convenient to purchase, lower in use cost and easy to transport; thereby reducing the test cost and the difficulty of the test.

The humidifying tank body has a simple structure, is easy to manufacture and has lower manufacturing cost.

The humidifying tank body is a water bath tank 4, and the inner bottom of the water bath tank 4 can be filled with water to form the humidifying structure;

the air inlet 41 is hermetically communicated with one end of a conduit fixedly arranged in the water bath tank 4, and the other end of the conduit is positioned below the water surface of water filled at the bottom in the water bath tank 4.

The humidifying principle of the water bath tank 4 is as follows: the gas source entering the water bath tank 4 through the gas inlet 41 enters the inner bottom of the water bath tank 4 through the delivery pipe, so that the methane gas overflowing from the water can carry certain vapor, and the function of humidifying the dry methane (output by the methane gas cylinder 1) is realized.

After the water bath tank 4 is adopted as the humidifying tank body, the structure is simplest and the manufacturing cost is lowest, and the humidifying effect can be ensured.

The water bath tank 4 is provided with a vertical cylinder, and the upper end face and the lower end face of the vertical cylinder are both sealed end faces; the outer surface of the upper end of the water bath tank 4 is fixedly provided with the air inlet 41 and the air outlet 42 which are both convex upwards.

The water bath tank 4 is simple and reasonable in structure, the reservoir is easily formed directly through the inner bottom of the vertical cylinder, and the depth of the reservoir is easy to adjust, so that the overflow height and the overflow time of dry methane gas from water are adjusted, and the adjustment of the steam content in the methane gas is realized.

In practice, the upper end surface of the vertical cylinder is fixedly connected with a tank cover through a flange, a screw and a nut, and the air inlet 41 and the air outlet 42 are arranged on the tank cover.

Wherein, the outer side wall of the water bath tank 4 is also provided with a water injection/discharge port 43 with a control valve.

Thus, water can be conveniently injected into the water bath tank 4 through the water injection/drainage port 43 or the water filled in the water bath tank 4 can be drained, and the convenience degree of operation and use is improved.

Wherein the water injection/discharge port 43 is located on the side wall of the water bath tank 4 near the bottom.

The water surface height in the water bath tank 4 can be known through the principle of the U-shaped communicating vessel, so that the water filling amount in the water bath tank 4 can be adjusted conveniently.

The input section further comprises a gas pressure adjusting device, and the gas pressure adjusting device comprises a primary pressure reducing valve 2 and a switch valve;

the primary pressure reducing valve 2 and the switch valve are fixedly arranged on the gas pipe between the gas inlet 41 of the humidifying tank body and the gas source.

Therefore, the on-off of the air source can be controlled by the switch valve; the high pressure in the methane gas cylinder 1 is reduced to a suitable pressure by the primary pressure reducing valve 2, which helps to better complete the test.

The drying section (namely the utility model) comprises an installation cylinder 12, a pair of end plates 121 are fixedly connected to two end faces of the installation cylinder 12 in a sealing manner, at least one pair of jacks are arranged on the pair of end plates 121 in the through area in the installation cylinder 12, each pair of jacks are used for inserting and fixing two ends of one drying tube, and the inner side surface of each drying tube is provided with a drying film to be tested; the hole wall of each pair of jacks is in sealing fit connection with the side walls at the two ends of the drying tube.

After the structure of the installation cylinder 12 is adopted, the drying tube to be tested can be conveniently inserted into the installation cylinder 12, and the drying tube to be tested can be conveniently taken out of the installation cylinder 12, so that the drying performance test efficiency of different drying tubes is improved.

In practice, the drying tube is an existing product, such as a "nano drying film tube" disclosed in the technical solution of publication No. CN208632474U, which is not described herein again.

In implementation, a stopper 122 is fixedly installed on the outer end surface of the installation cylinder 12 close to the output end of the drying tube, and the stopper 122 has a protruding resisting portion protruding along the radial direction of the adjacent jack and located in the jack through region.

The arrangement of the stop block 122 can form a support for the output end of the drying tube, so that the drying tube is prevented from shifting under the action of high pressure of an air source, and a better guarantee test is successfully completed.

In practice, the radial edges of the pair of end plates 121 are convexly formed with flange connecting edges.

Therefore, the mounting cylinder 12 can be quickly and reliably fixed and assembled through the flange connecting edge, and the reliability of the test is ensured; the structure can help the installation cylinder 12 to realize convenient disassembly, thereby improving the disassembly, assembly and replacement efficiency of the drying tube in the installation cylinder 12.

When in implementation, the installation cylinder 12 is installed in a transverse arrangement mode, and a water outlet 123 is formed in the outer lower side wall of the installation cylinder 12.

After the structure is adopted, the dehydrated water vapor can be conveniently and rapidly discharged through the water outlet 123 in time; the steam is prevented from gathering and condensing in the installation cylinder 12, the interference on the steam removal process is avoided, and the drying performance of the drying tube can be reflected more truly and accurately.

In implementation, two ends of the installation cylinder 12 are respectively and fixedly communicated with a connection pipe in a sealing manner, and each connection pipe is provided with a dew point instrument interface which is used for fixedly installing the dew point instrument.

Above, installation section of thick bamboo 12 and connecting pipe are independent each other and can assemble fixed structure, not only easily carry out independent processing to installation section of thick bamboo 12 and connecting pipe like this and generate, reduce the degree of difficulty and the cost of processing production. And the quick assembly and quick disassembly of the mounting cylinder 12 and the connecting pipe are easy to realize, so that the drying pipes can be replaced conveniently, and the performance tests of different drying pipes (drying films) can be completed.

During implementation, each connecting pipe is provided with a pressure transmitter interface, and the pressure transmitter interface is used for fixedly mounting a pressure transmitter 9.

Similarly, after the pressure transmitters are arranged on the two connecting pipes at the two ends of the installation cylinder 12, the change of the air pressure value of the natural gas before and after drying can be measured, and the usability of the drying film in the drying pipe can be known.

In practice, there is a space between the inner side of the mounting cylinder 12 and the outer side of the drying tube inserted in each pair of the insertion holes.

Preferably the spacing is above 1 mm.

Therefore, the water vapor removed by the drying tube can rapidly pass through the spacing area, so that the blocking of the flow of the water vapor is avoided, and the real drying performance of the drying tube can be more accurately reflected.

In practice, each connecting pipe is provided with a flow meter interface which is used for fixedly mounting the flow meter 8.

Thus, the change in the flow rate value of the natural gas before and after drying can be measured.

The system for testing the performance of the drying film further comprises a leakage detection device, the leakage detection device comprises a methane detector 11 and an electric control valve 3 for leakage prevention, and a probe of the methane detector 11 is communicated with an annular space in the installation cylinder 12 after the drying tube is inserted; and the electric control valve 3 for leakage prevention is fixedly arranged on the connecting pipeline of the input section.

After the leakage detection device is arranged, the methane detector 11 can automatically close the electric control valve 3 for leakage prevention to stop continuous supply of methane after the leaked gas (due to breakage or performance failure of the drying film in the drying tube) reaches a set value (output signals are sent to the controller 17), so that the methane can be processed in time, and the test safety can be better guaranteed.

In implementation, the drying film performance testing system further comprises a controller 17, the controller 17 can be a computer or an intelligent terminal (such as a smart phone or a tablet personal computer), and the controller 17 is electrically connected with the methane detector 11, the anti-leakage electric control valve 3, the dew point meter, the flow meter and the pressure transmitter.

During implementation, the probe of the methane detector 11 is hermetically communicated with the water outlet 123 arranged on the outer side surface of the mounting cylinder 12 through a communicating pipeline, and the communicating pipeline is fixedly provided with one leakage-proof electric control valve 3.

Therefore, when methane leakage occurs, the two anti-leakage electric control valves 3 can be closed in time, the methane leakage is blocked, and the test safety is guaranteed.

Preferably, the electric control valve 3 for leakage prevention is an electric ball valve.

Wherein, the output section comprises a buffer tank 13, a pressure reducing valve and a gas stove which are sequentially communicated along the front and back directions of the gas flow.

After the structure of the output section is adopted, the pressure in the whole test system can be ensured to be stable through the buffer tank 13, and the working reliability of the whole system can be better ensured. The high-pressure gas is decompressed to a proper low pressure by the decompression valve and then is supplied to the gas stove for consumption, so that the smooth flow of the methane gas in the whole test system is ensured.

In practice, the pressure relief valves include a two-stage pressure relief valve 14 and a three-stage pressure relief valve 15.

In implementation, the buffer tank 13 may have the same structure as the water bath tank 4, and is different from the water bath tank 4 in that the buffer tank 13 does not need to contain water, and the water injection/drainage port 43 does not need to be formed in the buffer tank 13. Thus, the structure of the surge tank 13 can be simplified, the production and assembly can be facilitated, and the cost can be reduced.

During implementation, the gas stove is preferably a strong fire stove 16, the strong fire stove 16 is large in firepower and high in energy consumption, methane gas with larger flow rate/flow velocity can be consumed more quickly, and a test system can obtain a larger airflow speed regulation range.

In practice, it is preferable that the performance testing system for drying further includes a mounting and transporting sled, the mounting and transporting sled includes a supporting frame and a bottom plate fixedly mounted at the bottom of the supporting frame, and the input section, the drying section and the output section can be placed or fixed on the bottom plate.

The above is only the preferred embodiment, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the technical scope of the present invention, and the technical scope of the present invention is also considered to fall into the scope of the claims.

Claims (10)

1. The drying section of the film performance test system for drying is characterized in that: the device comprises a mounting cylinder, wherein a pair of end plates are fixedly connected to two end faces of the mounting cylinder in a sealing manner, at least one pair of jacks are arranged on the pair of end plates in a manner of being opposite to the part of a through area in the mounting cylinder, each pair of jacks are used for inserting and fixing two ends of one drying tube, and a drying film to be tested is arranged on the inner side surface of each drying tube; the hole wall of each pair of jacks is in sealing fit connection with the side walls at the two ends of the drying tube.

2. The drying section of a drying film performance testing system of claim 1, wherein: the outer end face of the mounting cylinder, close to the output end of the drying tube, is fixedly provided with a stop block, and the stop block is provided with a protruding resisting part which protrudes along the radial direction of the adjacent jack and is positioned in the jack through area.

3. The drying section of the drying film performance testing system according to claim 1 or 2, characterized in that: the radial edges of the pair of end plates are convexly provided with flange connecting edges.

4. The drying section of the drying film performance testing system according to claim 1 or 2, characterized in that: the installation cylinder is installed in a transverse arrangement mode, and a water outlet is formed in the outer lower side wall of the installation cylinder.

5. The drying section of the drying film performance testing system according to claim 1 or 2, characterized in that: the two ends of the mounting cylinder are respectively fixedly communicated with a connecting pipe in a sealing manner, each connecting pipe is provided with a dew point instrument interface, and the dew point instrument interfaces are used for fixedly mounting the dew point instruments.

6. The drying section of a drying film performance testing system of claim 5, wherein: each connecting pipe is provided with a pressure transmitter interface which is used for fixedly mounting a pressure transmitter.

7. The drying section of a drying film performance testing system of claim 5, wherein: each connecting pipe is provided with a flow meter interface which is used for fixedly mounting a flow meter.

8. The drying section of the drying film performance testing system according to claim 1 or 2, characterized in that: and a space is reserved between the inner side surface of the mounting cylinder and the outer side surface of the drying pipe inserted in each pair of insertion holes.

9. The drying section of the drying film performance testing system according to claim 1 or 2, characterized in that: the device also comprises a leakage detection device, wherein the leakage detection device comprises a methane detector and an electric control valve for leakage prevention, and a probe of the methane detector is communicated with an annular space in the installation cylinder after the drying tube is inserted; and the electric control valve for preventing leakage is fixedly arranged on the connecting pipeline of the air source input section.

10. The drying section of a drying film performance testing system of claim 9, wherein: the probe of the methane detector is hermetically communicated with a water outlet arranged on the outer side surface of the mounting cylinder through a communicating pipeline, and the communicating pipeline is fixedly provided with one electric control valve for leakage prevention.

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