CN211536838U - Quenching liquid separating device - Google Patents

Abstract

The utility model relates to the field of quenching liquid separation, and discloses a quenching liquid separation device, which comprises a filter vat and a heating device, wherein the filter vat is provided with a first containing box and a second containing box from top to bottom; the heating device comprises a controller, a power switch, a power socket, a heating metal wire and a thermocouple, wherein the power socket is electrically connected with the power switch; during purification, the controller drives the heating metal wire to heat according to a set heating temperature value, after heating is completed, the PAG substance, water and impurities in the quenching liquid are layered due to different densities, the impurities and the water at the bottom of the first container are discharged, then effective quenching liquid is extracted, and the quenching liquid is recycled under the condition that the quenching effect is not influenced.

Description

Quenching liquid separating device

Technical Field

The utility model relates to a quenching liquid separation field, concretely relates to quenching liquid separator.

Background

In the production process of the petroleum drill rod joint, the drill rod joint needs to be placed into quenching liquid for heat treatment, and in the heat treatment process, the drill rod joint is heated at high temperature and is in contact with air to generate oxide skin, and the oxide skin can be remained in the quenching liquid.

During the heat treatment, a commonly used quench liquid is PAG quench liquid. PAG is a reversible and compatible high molecular polymer, and precipitates from an aqueous solution when the temperature of the aqueous solution is higher than 74 +/-4 ℃. During the heat treatment, the temperature of the liquid around the workpiece rises, and the PAG polymer is desolventized from the solution and adheres to the surface of the workpiece in the form of a water-rich coating by virtue of the wettability of the PAG polymer, so that the cooling speed of the workpiece is adjusted. After the workpiece is cooled down, the polymer adhered to the surface of the workpiece can be re-dissolved into the quenching liquid. The redissolution requires a certain time, and the workpiece is often taken away from the quenching liquid when the polymer redissolution is clean in production. Therefore, the workpiece tends to carry out a liquid with a higher PAG content than the average concentration of PAG in the quench liquid used. After long-term and large-scale quenching, the relative concentration of PAG in the quenching liquid is necessarily gradually reduced.

Therefore, after the PAG quenching liquid is used for a long time, if the PAG quenching liquid is not filtered and purified, the cooling effect of the drill pipe joint can be influenced, and the final mechanical property of the drill pipe joint can be further changed.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of background art, the utility model provides a quenching liquid separator, the technical problem that solve can fall into impurity and PAG material's concentration reduces gradually in long-term use process for current quenching liquid, if do not purify the concentration of quenching liquid, can influence by the final mechanical properties of quenching work piece.

For solving the technical problem, the utility model provides a following technical scheme: the quenching liquid separation device comprises a filter barrel and a heating device, wherein the filter barrel is provided with a first container and a second container from top to bottom, the outer wall of the first container is provided with an inlet pipeline, and the bottom plate of the first container is obliquely arranged; heating device includes the controller, switch, power socket, heating wire and thermocouple, power socket installs and holds the incasement wall at the second, and electric connection switch, switch electricity connects heating wire, heating wire is at the bottom plate bottom align to grid of first appearance case, the controller is located the second and holds incasement portion, electric connection thermocouple and switch respectively, the thermocouple is located first appearance incasement portion, be configured in detecting first appearance incasement portion temperature, the bottom plate of first appearance case is equipped with first export pipeline and second export pipeline.

Furthermore, the inlet pipeline, the first outlet pipeline and the second outlet pipeline are all provided with flow regulating valves for regulating the inflow and outflow flow of the quenching liquid.

Furthermore, a liquid level sensor for detecting the liquid level of the quenching liquid is arranged on the inner wall of the first container, an electromagnetic water valve is arranged in the inlet pipeline, and the liquid level sensor and the electromagnetic water valve are both electrically connected with the controller. The electromagnetic water valve is normally open, the inflow of quenching liquid of the inlet pipeline is not influenced, when the liquid level of the quenching liquid in the first container is higher than the liquid level sensor, the controller drives the electromagnetic water valve to be closed, and the inlet pipeline is forbidden to flow the quenching liquid into the first container.

Further, rabbling mechanism is connected at first appearance box top, and rabbling mechanism includes agitator motor, (mixing) shaft and stirring fan blade, and the (mixing) shaft is connected to agitator motor's motor shaft, is equipped with a plurality of stirring fan blades on the (mixing) shaft. When the quenching liquid is heated and stored, the stirring motor is driven to rotate at a low speed through the controller, and the stirring motor drives the stirring fan blades to rotate through the connected stirring shaft, so that the quenching liquid in the first container is heated uniformly, and the purification is accelerated.

Furthermore, an insulating layer is arranged below the first container bottom plate, and the heating metal wire is positioned between the insulating layer and the first container bottom plate.

The utility model discloses the theory of operation as follows: an inlet pipeline of the filter barrel is externally connected with a pipeline, and the quenching liquid is conveyed to the first containing box from the quenching tank by the circulating pump through the pipeline. Then the controller controls the heating wire to heat according to the input heating temperature value, and the thermocouple transmits the detected temperature signal to the controller as feedback to form closed loop heating. In the heating process, the controller drives the stirring motor to rotate at a slow speed, so that the quenching liquid is heated uniformly, and the purification is accelerated. After the quenching liquid is extracted, the PAG substance, water and impurities in the quenching liquid are sequentially layered according to the density, the impurities and the water at the bottom of the first container are discharged through the first outlet pipeline, and then the effective quenching liquid is extracted through the second outlet pipeline.

Compared with the prior art, the utility model beneficial effect who has is: heating the quenching liquid through a heating device, discharging impurities and water at the bottom of the first container tank firstly because PAG substances, water and impurities in the quenching liquid are layered due to different densities, extracting effective quenching liquid, and realizing the recycling of the quenching liquid under the condition of not influencing the quenching effect.

Drawings

The utility model discloses there is following figure:

fig. 1 is a schematic view of a filter vat of the present invention;

FIG. 2 is a schematic view of the stirring mechanism of the present invention;

fig. 3 is a structural view of the heating device of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1 and 3, the quenching liquid separating device comprises a filter vat and a heating device.

The filter vat from the top down is equipped with first appearance case 1 and second appearance case 2, and first appearance case 1 outer wall is equipped with inlet pipeline 4, and the bottom plate 3 slope setting of first appearance case 1, and first outlet duct 6 and second outlet duct 5 are still connected to bottom plate 3.

The heating device comprises a controller 13, a power switch 11, a power socket 10, a heating wire 12 and a thermocouple 14; the power socket 10 is installed on the outer wall of the second container 2 and electrically connected with the power switch 11, the power switch 11 is electrically connected with the heating wires 12, the heating wires 12 are uniformly arranged at the bottom of the bottom plate 3 of the first container 1, the bottom plate 3 is heat-conducting and insulating, the controller 13 is located inside the second container 2 and electrically connected with the thermocouple 14 and the power switch 11 respectively, and the thermocouple 14 is located inside the first container 1 and configured to detect the temperature inside the first container 1.

In this embodiment, the power switch 11 is a solid-state relay, an external power source is connected to the heating wire 13 through the power socket 10 and the solid-state relay, the controller 13 controls the solid-state relay to be turned on and off, and an overcurrent protection device is further disposed on a power supply loop of the heating wire 13.

The thermocouple 14 is a measuring element for converting a temperature signal into a voltage signal, the peripheral temperature and the voltage output by the thermocouple are in a linear relationship, and the controller 13 obtains the internal temperature of the first container 1 according to the received voltage, wherein in the embodiment, the type of the thermocouple 14 is PT-100.

The controller 13 can be a PLC controller or a single chip microcomputer.

The model of the PLC is XD-16 without Sn, the external port of the PLC is connected with an AD module, the AD module is MA-4AD2DA, the thermocouple 14 inputs a voltage signal to the AD module, the PLC obtains the internal temperature of the first container 1 according to the voltage value received by the AD module, and then the PLC drives the solid-state relay to be switched on or off, so that closed-loop control is realized.

The singlechip model is STM8L10F3U6, photoelectric coupler's control end is connected to its output electricity, 24V DC power supply and solid state relay are connected to photoelectric coupler's the end that switches on, when the singlechip exports high level signal, photoelectric coupler switches on, heating wire 12 inserts the power heating, and is same, the singlechip drives solid state relay according to the voltage signal drive solid state relay of thermocouple 14 output and switches on or break off, practice closed-loop control, when guaranteeing the heating, the inside temperature of first appearance case 1 is in suitable purification temperature, guarantee the purification effect.

Further, the inlet pipeline 4, the first outlet pipeline 6 and the second outlet pipeline 5 are all provided with a flow regulating valve 7 for regulating the inflow and outflow flow of the quenching liquid.

Further, a liquid level sensor 15 for detecting the liquid level of the quenching liquid is arranged on the inner wall of the first container 1, the type of the liquid level sensor 15 is UDG-34KB-G, an electromagnetic water valve 8 is arranged in the inlet pipeline 4, and both the liquid level sensor 15 and the electromagnetic water valve 8 are electrically connected with the controller 13. The electromagnetic water valve 8 is normally open, the inflow of the quenching liquid of the inlet pipeline 4 is not influenced, when the liquid level of the quenching liquid in the first container 1 is higher than the liquid level sensor 15, the controller 13 drives the electromagnetic water valve 8 to be closed, and the inlet pipeline 4 is forbidden to flow the quenching liquid into the first container 1.

As shown in fig. 2, the stirring mechanism includes a stirring motor 20, a stirring shaft 21 and stirring blades 22, a motor shaft of the stirring motor 20 is connected to the stirring shaft 21, and the stirring shaft 21 is provided with a plurality of stirring blades 22. When the quenching liquid is heated and stored, the controller 13 drives the stirring motor 20 to rotate at a slow speed, and the stirring motor 20 drives the stirring fan blades 22 to rotate through the connected stirring shaft 21, so that the quenching liquid in the first container 1 is heated uniformly, and the purification is accelerated.

Further, an insulating layer is arranged below the bottom plate 3 of the first container 1, and the heating metal wire is positioned between the insulating layer and the bottom plate of the first container.

The utility model discloses the theory of operation as follows: an inlet pipeline 4 of the filter barrel is externally connected with a pipeline, and the quenching liquid is conveyed into the first container 1 from the quenching tank by the circulating pump through the pipeline. Then the controller 13 controls the heating wire 12 to heat according to the input heating temperature value, and the thermocouple 14 transmits the detected temperature signal to the controller 13 as feedback to form closed loop heating. In the heating process, the controller 13 drives the stirring motor 20 to rotate at a slow speed, so that the quenching liquid is heated uniformly, and the purification is accelerated. After the quenching liquid is extracted, the PAG substance, water and impurities in the quenching liquid are sequentially layered according to the density, the impurities and the water at the bottom of the first containing box 1 are discharged through the first outlet pipeline 6, then the effective quenching liquid is extracted through the second outlet pipeline 5, and the quenching liquid is recycled under the condition that the quenching effect is not influenced.

In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (5)

1. The quenching liquid separation device is characterized in that: including filter vat and heating device, filter vat from the top down is equipped with first appearance case and second appearance case, first appearance incasement wall is equipped with the inlet pipeline, the bottom plate slope of first appearance case sets up, heating device includes controller, switch, supply socket, heating wire and thermocouple, supply socket installs and holds the incasement wall at the second, and electric connection switch, and the heating wire is connected to the switch electricity, and the heating wire is at the bottom plate bottom align to grid of first appearance case, and the controller is located second appearance incasement portion, electric connection thermocouple and switch respectively, the thermocouple is located first appearance incasement portion, is disposed in detecting first appearance incasement portion temperature, first export pipeline and second export pipeline are connected respectively to the bottom plate of first appearance case.

2. The quenching liquid separating device according to claim 1, wherein: the inlet pipeline, the first outlet pipeline and the second outlet pipeline are all provided with flow regulating valves.

3. The quenching liquid separating device according to claim 1, wherein: be equipped with level sensor on the first appearance incasement wall, the inside electromagnetism water valve that is equipped with of inlet pipe, level sensor and the equal electric connection director of electromagnetism water valve.

4. The quenching liquid separating device according to claim 1, wherein: stirring mechanism is connected at first appearance box top, stirring mechanism includes agitator motor, (mixing) shaft and stirring fan blade, and the (mixing) shaft is connected to agitator motor's motor shaft, is equipped with a plurality of stirring fan blades on the (mixing) shaft.

5. The quenching liquid separating device according to claim 1, wherein: an insulating layer is arranged below the first container bottom plate, and the heating metal wire is positioned between the insulating layer and the first container bottom plate.

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