CN201926252U - Mobile pipe drying device - Google Patents

Abstract

The utility model discloses a pipeline drying device, which provides a mobile pipeline drying device with good drying effect, which can change the flow direction of gas in the pipeline according to the use conditions, thereby ensuring that the device can work continuously, and solves the problem of existing There are technical problems in the technology that the gas flow direction in the device cannot be changed, and the controller cannot continue to work when it fails, which affects the work efficiency. It includes the air cooler in the container and the air cooler connected to the side of the air cooler. The high-efficiency degreaser, the high-efficiency degreaser is connected with the adsorption dryer, the air cooler is provided with a compressed air inlet, and the adsorption dryer is provided with a product gas exhaust At least two adsorption dryers are connected in parallel on the high-efficiency degreaser, and a solenoid valve is provided on the connecting pipeline between the high-efficiency degreaser and the adsorption dryer, and the solenoid valve passes through the controller Control the conduction of connecting pipes.

Description

Mobile Pipeline Drying Device

technical field

The utility model relates to a pipeline drying device, in particular to a mobile pipeline drying device which can change the flow direction of gas in the pipeline according to the usage conditions and ensure the continuous operation of the drying device.

Background technique

In oil pipelines, natural gas pipelines or some other chemical industry pipelines, if the pipeline is doped with some impurities, such as oil, water or dust, the harm is considerable, but the above-mentioned impurities produced during pipeline processing are often Unavoidable, such as pipeline welding, pressure test, etc. will inevitably produce a large amount of moisture and impurities. Therefore, drying treatment is generally required before the pipeline is officially put into operation. The existing pipeline drying methods generally use long-distance manual wiping, or place cotton balls in the pipeline, and then use compressed air to blow the cotton balls to wipe the pipeline. Not only the drying and dust removal effect of the pipeline is poor, time-consuming and laborious, but also Affected by the environment on site, such as laying oil pipelines in remote and remote areas, the traditional pipeline drying method will inevitably waste a lot of manpower and material resources.

A Chinese patent discloses a special drying equipment for pipelines (CN2779206Y), which includes an electrical control box, an air-cooled high-efficiency air cooler, a high-efficiency degreaser, and an adsorption dryer. The equipment is designed as a container with an air-cooled Type high-efficiency air cooler, high-efficiency degreasing device and adsorption dryer. The air-cooled high-efficiency air cooler is located On the right side of the container type housing, the electrical control box is located at the right front of the container type housing. This device solves the problem of difficult drying of pipelines caused by the harsh on-site environment by setting drying equipment in the container, and then using the compressed air generated by the drying equipment to blow and dry the pipelines. The flow direction in the equipment, and once the electrical control box in the equipment fails or the adsorption dryer leaks, the whole set of equipment needs to be shut down for maintenance before it can resume work. The work efficiency is low and the performance is poor.

Contents of the invention

The utility model mainly provides a mobile pipeline drying device which has a good drying effect and can change the flow direction of the gas in the pipeline according to the usage conditions, so as to ensure that the drying device can work continuously, and solves the problems existing in the prior art. Change the flow direction of the gas in the device, and the failure of the controller to work continuously, thus affecting the technical problems such as work efficiency.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: a mobile pipeline drying device, which includes an air cooler installed in the container and a high-efficiency degreaser connected to one side of the air cooler. The high-efficiency degreaser is connected with the adsorption dryer, the air cooler is provided with a compressed air inlet, the adsorption dryer is provided with a product gas exhaust port, and the high-efficiency degreaser At least two adsorption dryers are connected in parallel to the oiler, and a solenoid valve is provided on the connecting pipeline between the high-efficiency oil remover and the adsorption dryer, and the solenoid valve controls the conduction of the connecting pipeline through a controller. By setting multiple adsorption dryers in parallel on the high-efficiency degreaser, multiple adsorption dryers can work alternately, that is, when one adsorption dryer performs drying treatment, the other adsorption dryer delivers dry air to the outside , so as to ensure the connectivity of the device work; by setting a solenoid valve on the connecting pipe between the high-efficiency oil remover and the adsorption dryer, and the solenoid valve is connected to the controller, the switch of the solenoid valve can be controlled by the controller. When the equipment performs normal drying and purging work, the controller automatically runs according to a set program, and the airflow flows in the direction of the set pipeline; when the controller program fails or the airflow direction needs to be changed, the controller controls the relevant electromagnetic When the valve is opened or closed, the air flow changes the flow direction at this time, and flows to the exhaust port of the finished product through another spare pipeline, so that the drying and purging work remains continuous, and the normal drying and purging work will not be affected by equipment maintenance. The effect is good, and the work efficiency is improved.

  Preferably, an activated carbon filter is provided between the high-efficiency oil remover and the adsorption dryer. The activated carbon filter can absorb the residual chlorine that cannot be removed in the high-efficiency degreaser to prevent the post-stage reverse osmosis membrane from being oxidized and degraded. Colloids and pigments, heavy metal ions, COD, etc. have obvious adsorption and removal effects, reduce the impurity content in the compressed air, and improve the use effect and service life of the adsorption dryer.

Preferably, a fine dust filter is provided between the adsorption dryer and the exhaust port of the product gas. The fine dust filter can absorb the dust that cannot be removed in the adsorption dryer and reduce the dust content in the compressed air.

Preferably, the adsorption dryer includes a hollow cylindrical cylinder, an air diffuser is arranged at the bottom of the cylinder, and an adsorption tower is arranged above the air diffuser. The compressed air from the upstream filter is evenly diffused upwards through the air diffuser, and then the water in it is further removed through the adsorption tower. The structure is simple and the adsorption drying effect is good.

  The adsorption tower can be silica gel or molecular sieve, as more preferably, the adsorption tower is alumina. In adsorption drying equipment, the adsorbent is an important factor to ensure the adsorption performance of the equipment. The adsorbent is generally a substance with a large specific surface area and a high porosity. As an adsorbent, alumina has the following characteristics: strong adsorption capacity, large specific surface area; no chemical reaction with adsorbate and other media in contact with it; good mechanical strength and thermal strength; easy regeneration, not easy to deteriorate; Mass production, low price.

Preferably, the adsorption dryer is a heatless regenerative dryer. The heatless regenerative dryer adopts PIC single-chip microcomputer technology to develop a special controller, which automatically controls the adsorption and regeneration cycle of the two adsorption towers and the work of the heater according to the set parameter values. It adopts digital tube display and split structure, that is, control and display Separated, the controller has strong anti-interference ability, direct and clear display, and simple operation.

  Therefore, the mobile pipeline drying device of the present invention has the following advantages: first, the compressed air with a flow rate of 120Nm3/min and a pressure of ≤1.0Mpa is cooled by the air cooler to reduce the temperature of the compressed air outlet to ≤50°C, and then Enter the high-efficiency degreaser to remove most of the oil, water, and dust, then enter the activated carbon filter to reduce the residual oil content in the compressed air to ≤0.001ppm, and then enter two heatless regenerative dryers filled with adsorbents, compress The air enters from the bottom of the heatless regenerative dryer. After the air diffuses through the air diffuser, it enters the adsorption tower evenly upwards for drying treatment, and then flows out the purified air from the outlet. The two adsorption towers operate alternately and then pass through the fine dust filter. Purification, so that it can continuously produce purified gas with a dew point of -40°C.

Description of drawings:

      Fig. 1 is the structural representation of the utility model mobile pipeline drying device;

      Fig. 2 is a partial structural schematic diagram of an adsorption dryer.

Detailed ways:

      The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

  Example:

      As shown in Figure 1, a mobile pipeline drying device of the present invention includes an air cooler 1 integrated in the container, with a compressed air inlet 11 on the left side of the upper end of the air cooler 1, the upper end The air outlet on the right side is connected with the air inlet of a high-efficiency oil remover 2, and the air outlet of the high-efficiency oil remover 2 is connected with the air inlet of an activated carbon filter 7, and the air outlet of the activated carbon filter 7 is connected with the heatless The regeneration dryers are connected, and the heatless regeneration dryer includes two parallel adsorption dryers 3, as shown in Figure 2, the adsorption dryer 3 includes a hollow cylindrical cylinder 32, the cylinder 32 is placed vertically, and the cylinder The bottom of 32 is an air inlet, and the top is an air outlet. An air diffuser 33 is installed near the bottom of the inner cavity of the cylinder 32. An adsorption tower 34 is fixed above the air diffuser 33. The adsorption tower 34 is Alumina, the air outlet of the heatless regenerative dryer is connected to the fine dust filter 8, and a finished gas exhaust port 31 is opened on the upper right of the fine dust filter 8, wherein the activated carbon filter 7 and the heatless regenerative dryer Three solenoid valves 5 are installed on the connecting pipe 4, and the solenoid valve 5 is connected to the controller 6. The switch of the solenoid valve 5 can be controlled by the controller 6, thereby controlling the conduction of the connecting pipe 4.

 The mobile pipeline drying equipment is a kind of equipment for drying compressed air according to the principle of pressure swing adsorption. Under a certain pressure, the compressed air flows through the adsorbent (drying) bed from bottom to top. The water vapor in the air is transferred to the surface of the adsorbent, that is, the adsorbent absorbs the moisture in the air to tend to balance, so that the compressed air is dried, which is the adsorption (working) process; when the pressure drops dry air (regeneration air) , and then contact with the adsorbent saturated with adsorbed water, the moisture in the adsorbent turns to the regeneration air until it reaches equilibrium, so that the adsorbent is dried, which is the desorption (regeneration) process; that is, the moisture in the adsorbent is adsorbed at low temperature or high pressure (working), water is desorbed (regenerated) under high temperature or low pressure; the heatless regenerative dryer has a double-tube structure, and the tubes are filled with adsorbents. When one adsorption tube is in the drying process, the other adsorption tube During the desorption process;

      There are three working states when in use:

      1. Host automatic control:

      When the equipment needs to be automatically controlled by the master, turn the manual/automatic switch on the control panel to the automatic position, the master/standby machine to the master position, and then turn the master start/stop to the start position. At this time, the device operates according to the control program. The control is suitable for normal pipeline drying and purging work;

      2. Automatic control of standby machine:

      When the equipment needs to be automatically controlled by the standby machine, turn the manual/automatic switch on the control panel to the automatic position, switch the main machine/standby machine to the standby position, and then turn the start/stop of the standby machine to the start position, and the equipment will run according to the control program. , this type of control is suitable for normal pipeline drying and purging work when there is a problem with the host control program.

   3. Manual control

      When the equipment is manually controlled, the pressure in the adsorption tower is exhausted first, the regeneration gas valve is closed, and then the bypass valve of the equipment is opened, and then the manual/automatic switch on the control panel is turned to the manual position. At this time, the equipment does not pass through the adsorption tower. , sent directly to the gas consumption point. When air enters the adsorption tower, it proves that there is air leakage from the working valve, the main intake valve will automatically close, and the valve leakage alarm indicator light will be on. This kind of control is generally used in the push ball state.

  The specific embodiments described herein are only examples to illustrate the concept of the present utility model. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (8)

1. movable tube drying device, comprise the forced air cooler (1) that is located in the container and be communicated with efficient degreasing device (2) in forced air cooler (1) one side, described efficient degreasing device (2) is connected with absorption type dryer (3) again, on described forced air cooler (1), be provided with compressed air inlet port (11), on described absorption type dryer (3), be provided with finished product gas exhaust port (31), it is characterized in that: two absorption type dryers (3) at least are connected in parallel on described efficient degreasing device (2), and be provided with magnetic valve (5) on the connecting pipe (4) between described efficient degreasing device (2) and absorption type dryer (3), described magnetic valve (5) is by the conducting of controller (6) control connection pipeline (4).

2. movable tube drying device according to claim 1 is characterized in that: be provided with active carbon filter (7) between described efficient degreasing device (2) and absorption type dryer (3).

3. movable tube drying device according to claim 1 and 2 is characterized in that: be provided with dust fine filter (8) between described absorption type dryer (3) and finished product gas exhaust port (31).

4. movable tube drying device according to claim 1 and 2, it is characterized in that: described absorption type dryer (3) comprises the cylindrical tube (32) of hollow, be provided with air diffuser (33) in the bottom of described cylindrical shell (32), be provided with adsorption tower (34) in the top of described air diffuser (33).

5. movable tube drying device according to claim 4 is characterized in that: described adsorption tower (34) is an aluminium oxide.

6. movable tube drying device according to claim 3 is characterized in that: described adsorption tower (34) is an aluminium oxide.

7. movable tube drying device according to claim 1 and 2 is characterized in that: described absorption type dryer (3) is a system of non heated regeneration dryer.

8. movable tube drying device according to claim 6 is characterized in that: described absorption type dryer (3) is a system of non heated regeneration dryer.

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