Gas-liquid medium bidirectional switching device of equipment jacket

Abstract

The utility model discloses an equipment jacket gas-liquid medium bidirectional switching device which comprises a jacket main body, a gas phase circulation structure fixedly arranged on the jacket main body, a liquid phase circulation structure comprising a liquid input pipe and a liquid output pipe, and a purging mechanism, the blowing mechanism is connected with the liquid input pipe through the spraying connection structure; in order to solve the technical problem that in the prior art, when gas-liquid heat transfer media are switched by common jacket equipment, residual oil media are not thoroughly emptied, the gas-liquid medium bidirectional switching device integrated with the purging function is designed. By arranging the special purging mechanism and the pulse type driving structure, high-strength intermittent airflow impact can be generated during medium switching, so that residual media attached to the inner wall and dead corners of the jacket are effectively stripped and discharged.

Description

Technical Field

[0001] This application relates to the technical field of media switching devices with jacket structures, and in particular to bidirectional switching devices for gas-liquid media in equipment jackets. Background Technology

[0002] In process industries such as chemical and pharmaceutical manufacturing, many reactions or processes require precise temperature control. Jacketed equipment is a common device for achieving this temperature control. Its principle is to introduce a heat transfer medium into the jacket of the main body of the equipment, and control the temperature of the internal materials through heat exchange between the medium and the equipment wall.

[0003] Complex production processes often require the use of different heat transfer media at different stages. For example, in the early stages of a reaction, it is necessary to rapidly raise the temperature to the reaction temperature, which often involves introducing high-temperature steam; during the exothermic reaction stage or when heat preservation is required, the process switches to liquid-phase heat transfer oil circulation; and after the reaction is completed, it may be necessary to switch to cooling water for cooling.

[0004] Currently, the common method for achieving medium switching is to connect two sets of circulation pipelines, one for the gas phase and one for the liquid phase, in parallel on the inlet and outlet pipelines of the jacket, and then switch them using valve assemblies. However, this conventional method has a significant technical challenge: when switching from a liquid phase medium, especially a high-viscosity liquid such as heat transfer oil, to a gas phase medium, some liquid phase medium will inevitably remain inside the jacket, pipelines, and valves. When high-temperature gas is subsequently introduced, this residual medium may coke or carbonize due to localized overheating, forming a heat insulation layer on the inner wall of the jacket, severely reducing heat transfer efficiency, and potentially clogging the pipelines.

[0005] In other words, existing technologies have the following technical problems: ordinary jacketed media switching devices leave residues when switching from liquid to gaseous media. Therefore, a bidirectional gas-liquid media switching device for equipment jackets is proposed to address the above problems. Summary of the Invention

[0006] This embodiment provides a bidirectional switching device for gas-liquid media in a jacket to solve the problem of residues in ordinary jacket media switching devices in the prior art when switching from liquid media to gas media.

[0007] According to one aspect of this application, a bidirectional switching device for gas-liquid media in a equipment jacket is provided, comprising:

[0008] The jacket body has a gas phase circulation structure fixedly installed on it, which includes a gas input pipe and a gas output pipe.

[0009] The gas input pipe is fixedly installed at the upper end of the jacket body, and the gas output pipe is fixedly installed at the lower end of the jacket body.

[0010] The liquid phase circulation structure includes a liquid inlet pipe and a liquid outlet pipe.

[0011] The liquid inlet pipe is fixedly installed at the upper end of the jacket body, and the liquid outlet pipe is fixedly installed at the lower end of the jacket body.

[0012] The purging mechanism is connected to the liquid input pipe via a jetting connection structure.

[0013] Furthermore, a gas input control valve is fixedly installed on the gas input pipe, and a gas output control valve is fixedly installed on the gas output pipe.

[0014] Furthermore, a tee is fixedly installed on the gas inlet pipe, and the tee is connected to the clean gas inlet pipe.

[0015] Furthermore, a liquid output control valve is fixedly installed on the liquid output pipe, and a liquid input control valve is fixedly installed on the liquid input pipe.

[0016] Furthermore, the gas input pipe and the gas output pipe are arranged diagonally, and the liquid input pipe and the liquid output pipe are arranged diagonally.

[0017] Furthermore, the purging mechanism includes a fixed cylinder, a movable piston, and a movable guide rod;

[0018] The fixed cylinder is fixedly installed on the outer surface of the jacket body. A movable piston is slidably connected in the inner cavity of the fixed cylinder, and a movable guide rod is fixedly connected to one side of the movable piston.

[0019] Furthermore, an output pipe and an input pipe are fixedly connected to the upper side of the inner cavity of the fixed cylinder, and check valves are installed on both the output pipe and the input pipe.

[0020] Furthermore, the jetting connection structure includes a three-way valve and a connecting pipe. The three-way valve is installed on the liquid input pipe, and one end of the three-way valve is fixedly connected to the connecting pipe. The other end of the connecting pipe is connected to the output pipe.

[0021] Furthermore, a connecting circular plate is fixedly connected to the bottom end of the movable guide rod, and one end of a pressure spring is fixedly connected to the upper surface of the connecting circular plate, while the other end of the pressure spring is fixedly connected to the bottom surface of the fixed cylinder.

[0022] The pulse-driven structure includes a connecting rod, a rotating disk, and a protrusion. One end of the connecting rod is fixedly connected to the bottom surface of the connecting plate, and the other end of the connecting rod is fixedly connected to a contact plate.

[0023] A rotatable disc is provided on the side of the contact plate.

[0024] Furthermore, several protrusions are fixedly provided on the arc-shaped wall of the rotating disk for periodically contacting the contact plate and applying downward pressure.

[0025] In order to solve the technical problem that residual oily media are easily not completely emptied when ordinary jacketed equipment switches between gas and liquid heat transfer media in the prior art, this application designs a bidirectional gas-liquid medium switching device with integrated purging function. By setting a special purging mechanism and pulsed drive structure, a high-intensity intermittent airflow impact can be generated during medium switching, thereby effectively stripping and discharging the residual media attached to the inner wall of the jacket and dead corners, thus ensuring the purity of the medium and the heat transfer efficiency after switching. It is particularly suitable for jacketed equipment such as chemical reactors and biological fermenters that perform gas-liquid medium switching. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application;

[0028] Figure 2 This is a front view of one embodiment of the present application.

[0029] Figure 3 This is a side perspective view of one embodiment of the present application;

[0030] Figure 4 This is a schematic diagram of the overall cross-sectional structure of one embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the purging mechanism according to one embodiment of this application;

[0032] Figure 6 This is one embodiment of the present application. Figure 3 A magnified structural diagram of point A.

[0033] In the picture:

[0034] 1. Jacket body; 101. Medium cavity;

[0035] 2. Gas phase circulation structure; 201. Gas inlet pipe; 202. Gas inlet control valve; 203. Three-way valve; 204. Clean gas inlet pipe; 205. Gas outlet pipe; 206. Gas outlet control valve;

[0036] 3. Liquid phase circulation structure; 301. Liquid inlet pipe; 302. Liquid inlet control valve; 303. Liquid outlet pipe; 304. Liquid outlet control valve;

[0037] 4. Jetting connection structure; 401. Three-way valve; 402. Connecting pipe;

[0038] 5. Purge mechanism; 501. Fixed cylinder; 502. Moving piston; 503. Moving guide rod; 504. Connecting circular plate; 505. Pressure boosting spring; 506. Output pipe; 507. Input pipe;

[0039] 6. Pulse-driven structure; 601. Connecting rod; 602. Contact plate; 603. Fixed bracket; 604. Rotating shaft; 605. Rotating disk; 606. Protrusion; 607. Drive motor. Detailed Implementation

[0040] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0041] Please see Figure 1 and Figure 2 As shown, the equipment jacket gas-liquid medium bidirectional switching device includes:

[0042] The jacket body 1 has a gas phase circulation structure 2 fixedly installed on it. The gas phase circulation structure 2 includes a gas input pipe 201 and a gas output pipe 205.

[0043] The gas input pipe 201 is fixedly installed at the upper end of the jacket body 1, and the gas output pipe 205 is fixedly installed at the lower end of the jacket body 1, forming a gas phase circulation channel with the medium cavity 101 of the jacket body 1, so that the gas phase medium can flow from top to bottom through the entire medium cavity 101.

[0044] Liquid phase circulation structure 3 includes a liquid inlet pipe 301 and a liquid outlet pipe 303.

[0045] The liquid inlet pipe 301 is fixedly installed at the upper end of the jacket body 1, and the liquid outlet pipe 303 is fixedly installed at the lower end of the jacket body 1, forming a liquid phase circulation channel so that the liquid phase medium can flow from top to bottom through the entire medium cavity 101.

[0046] The purging mechanism 5 is connected to the liquid input pipe 301 via the jet connection structure 4. It is used to inject pulse gas into the medium chamber 101 when it is necessary to switch the medium in the jacket from the liquid phase to the gas phase, so as to fully discharge the residual liquid phase medium.

[0047] This application, by setting up a special purging mechanism and a pulsed drive structure, can generate high-intensity intermittent airflow impact during medium switching, thereby effectively stripping and discharging residual medium adhering to the inner wall and dead corners of the jacket, thus ensuring the purity of the medium and heat transfer efficiency after switching. It is particularly suitable for jacketed equipment such as chemical reactors and biological fermenters that perform gas-liquid medium switching.

[0048] In a preferred embodiment of this application, see [reference] Figure 4 As shown, a gas input control valve 202 is also fixedly installed on the gas input pipe 201, and a gas output control valve 206 is fixedly installed on the gas output pipe 205, which are used to control the entry, cut-off and flow rate of the gaseous medium.

[0049] With this technical solution, when gas phase circulation needs to be activated, the gas input control valve 202 and the gas output control valve 206 can be opened to allow the gas phase medium to circulate along the designed path, thereby achieving heating or cooling of the main body of the equipment and realizing independent and controllable operation of the gas phase circulation.

[0050] Furthermore, a tee 203 is fixedly installed on the gas input pipe 201. The tee 203 is connected to the clean gas input pipe 204, forming a clean gas source access point. Through this technical solution, when it is necessary to switch from gaseous medium to liquid medium, or to purge and replace the gas phase circuit itself, the dry compressed air or inert gas entering through the clean gas input pipe 204 can be used to replace and discharge the residual gaseous medium, ensuring the purity of the gaseous medium.

[0051] In a preferred embodiment of this application, see [reference] Figure 3 and Figure 4 As shown, a liquid output control valve 304 is fixedly installed on the liquid output pipe 303, and a liquid input control valve 302 is fixedly installed on the liquid input pipe 301. Through this technical solution, by operating these control valves, the liquid phase circulation loop can be opened, closed, or adjusted independently, thereby realizing the circulation control and system isolation of the liquid phase medium, and realizing the independent and controllable operation of the liquid phase circulation.

[0052] Further, see Figure 4As shown, the gas inlet pipe 201 and the gas outlet pipe 205 are arranged diagonally to prevent flow short circuits when the gaseous medium flows through the rectangular medium cavity 101 and to sweep across the entire heat exchange surface as evenly as possible. The liquid inlet pipe 301 and the liquid outlet pipe 303 are arranged diagonally to prevent flow dead zones when the liquid medium flows through the rectangular medium cavity 101 and to achieve a more uniform heat exchange effect.

[0053] Furthermore, the bottom of the medium cavity 101 inside the jacket body 1 is inclined, and the liquid output pipe 303 is located at the lowest point of the inclination. With this technical solution, when the liquid phase circulation is stopped or the medium is switched, the liquid phase medium can be naturally collected and flow to the outlet by gravity, which facilitates the natural drainage of the liquid phase medium and reduces the residual amount.

[0054] In one specific embodiment of this application, see [reference]. Figure 3 and Figure 5 As shown, the purging mechanism 5 includes a fixed cylinder 501, a movable piston 502, and a movable guide rod 503.

[0055] A fixed cylinder 501 is fixedly mounted on the outer surface of the jacket body 1. A movable piston 502 is slidably connected in the inner cavity of the fixed cylinder 501. One end of a movable guide rod 503 is fixedly connected to one side of the movable piston 502. The other end of the movable guide rod 503 passes through the inner wall of the fixed cylinder 501 and extends to the outside of the wall, forming a piston mechanism that can reciprocate under external force. Through this technical solution, when the movable piston 502 moves into the inner cavity of the fixed cylinder 501, it can compress the gas in its front chamber to generate airflow and output it through the output pipe 506.

[0056] Furthermore, an output pipe 506 and an input pipe 507 are fixedly connected to the upper side of the inner cavity of the fixed cylinder 501. Both the output pipe 506 and the input pipe 507 are equipped with check valves. Specifically, the check valve on the output pipe 506 allows airflow to flow unidirectionally from the inner cavity of the fixed cylinder 501 to the connecting pipe 402, and the check valve on the input pipe 507 allows gas from an external gas source to flow unidirectionally into the inner cavity of the fixed cylinder 501.

[0057] The input pipe 507 is used to connect to an external source of dry compressed air or inert gas to provide a gas source for the purging mechanism 5.

[0058] The jet connection structure 4 includes a three-way valve 401 and a connecting pipe 402. The three-way valve 401 is installed on the liquid input pipe 301. One end of the three-way valve 401 is fixedly connected to the connecting pipe 402. The other end of the connecting pipe 402 is connected to the output pipe 506. It is used to introduce the high-pressure pulse gas generated by the purging mechanism 5 into the bottom of the medium chamber 101 in reverse through the liquid phase circulation pipeline, so as to realize the impact and carry-out of the residual liquid phase medium.

[0059] The bottom end of the movable guide rod 503 is also fixedly connected to a connecting circular plate 504. One end of a pressure spring 505 is fixedly connected to the upper surface of the connecting circular plate 504, and the other end of the pressure spring 505 is fixedly connected to the bottom surface of the fixed cylinder 501.

[0060] In a preferred embodiment of this application, see [reference] Figure 5 and Figure 6 As shown, the pulse drive structure 6 includes a connecting rod 601, a rotating disk 605, and a protrusion 606. One end of the connecting rod 601 is fixedly connected to the bottom surface of the connecting circular plate 504, and the other end of the connecting rod 601 is fixedly connected to a contact plate 602.

[0061] A rotatable rotating disk 605 is provided on the side of the contact plate 602. Specifically, a fixed bracket 603 is fixedly connected to the outer wall of the jacket body 1, and a rotating shaft 604 is rotatably connected to the fixed bracket 603. The rotating disk 605 is fixedly connected to the arc-shaped wall of the rotating shaft 604, forming a drive disk structure driven by the rotating shaft 604.

[0062] Several protrusions 606 are fixedly provided on the arc-shaped wall of the rotating disk 605 for periodically contacting the contact plate 602 and applying downward pressure.

[0063] When the rotating disk 605 rotates, it can drive the protrusion 606 to rotate as well. When the protrusion 606 contacts the contact plate 602, it drives the contact plate 602 to move downward, which in turn forces the moving piston 502 to move through the connecting rod 601 and the moving guide rod 503. At the same time, the pressure spring 505 is stretched and accumulates elastic potential energy. As the rotating disk 605 continues to rotate, the protrusion 606 separates from the contact plate 602. Under the action of the elastic potential energy stored in the pressure spring 505, the moving piston 502 is quickly pushed back to its original position, thereby generating a high-momentum pulse airflow instantaneously in the compression chamber of the fixed cylinder 501.

[0064] Furthermore, a drive motor 607 is fixedly installed on the side wall of the fixed bracket 603. The output shaft end of the drive motor 607 is fixedly connected to one end of the rotating shaft 604 to provide stable and controllable rotational power for the rotating disk 605. The frequency of pulse purging can be controlled by adjusting the speed of the drive motor 607.

[0065] Through this technical solution, by setting the pulse drive structure 6, a purely mechanical automatic pulse gas generator can be formed in conjunction with the purging mechanism 5. Thus, when switching media, especially when switching from liquid phase to gas phase, a series of high-pressure pulse gases can be injected into the jacket. The impact and pressure fluctuation of the airflow can be used to more effectively peel off and discharge the residual liquid media adhering to the inner wall of the jacket and the dead corners of the pipeline.

[0066] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0067] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bidirectional switching device for gas-liquid media in a equipment jacket, characterized in that: include: The jacket body (1) is fixedly provided with a gas phase circulation structure (2), which includes a gas input pipe (201) and a gas output pipe (205). The gas input pipe (201) is fixedly installed at the upper end of the jacket body (1), and the gas output pipe (205) is fixedly installed at the lower end of the jacket body (1). The liquid phase circulation structure (3) includes a liquid input pipe (301) and a liquid output pipe (303). The liquid input pipe (301) is fixedly installed at the upper end of the jacket body (1), and the liquid output pipe (303) is fixedly installed at the lower end of the jacket body (1). The purging mechanism (5) is connected to the liquid input pipe (301) through the jet connection structure (4).

2. The equipment jacket gas-liquid medium bidirectional switching device according to claim 1, characterized in that: A gas input control valve (202) is fixedly installed on the gas input pipe (201), and a gas output control valve (206) is fixedly installed on the gas output pipe (205).

3. The equipment jacket gas-liquid medium bidirectional switching device according to claim 2, characterized in that: A tee (203) is also fixedly installed on the gas input pipe (201), and the tee (203) is connected to the clean gas input pipe (204).

4. The equipment jacket gas-liquid medium bidirectional switching device according to claim 1, characterized in that: A liquid output control valve (304) is fixedly installed on the liquid output pipe (303), and a liquid input control valve (302) is fixedly installed on the liquid input pipe (301).

5. The equipment jacket gas-liquid medium bidirectional switching device according to claim 1, characterized in that: The gas input pipe (201) and the gas output pipe (205) are arranged diagonally, and the liquid input pipe (301) and the liquid output pipe (303) are arranged diagonally.

6. The equipment jacket gas-liquid medium bidirectional switching device according to claim 1, characterized in that: The purging mechanism (5) includes a fixed cylinder (501), a movable piston (502), and a movable guide rod (503). The fixed cylinder (501) is fixedly installed on the outer surface of the jacket body (1). A movable piston (502) is slidably connected in the inner cavity of the fixed cylinder (501). A movable guide rod (503) is fixedly connected to one side of the movable piston (502).

7. The equipment jacket gas-liquid medium bidirectional switching device according to claim 6, characterized in that: An output pipe (506) and an input pipe (507) are fixedly connected to the upper side of the inner cavity of the fixed cylinder (501), and a check valve is installed on both the output pipe (506) and the input pipe (507).

8. The equipment jacket gas-liquid medium bidirectional switching device according to claim 6, characterized in that: The jet connection structure (4) includes a three-way valve (401) and a connecting pipe (402). The three-way valve (401) is installed on the liquid input pipe (301). One end of the three-way valve (401) is fixedly connected to the connecting pipe (402), and the other end of the connecting pipe (402) is connected to the output pipe (506).

9. The equipment jacket gas-liquid medium bidirectional switching device according to claim 8, characterized in that: The bottom end of the movable guide rod (503) is also fixedly connected to a connecting circular plate (504), and one end of a pressure spring (505) is fixedly connected to the upper surface of the connecting circular plate (504). The other end of the pressure spring (505) is fixedly connected to the bottom surface of the fixed cylinder (501).

10. The equipment jacket gas-liquid medium bidirectional switching device according to claim 9, characterized in that: It also includes a pulse drive structure (6), which includes a connecting rod (601), a rotating disk (605) and a protrusion (606). One end of the connecting rod (601) is fixedly connected to the bottom surface of the connecting circular plate (504), and the other end of the connecting rod (601) is fixedly connected to a contact plate (602). A rotatable rotating disk (605) is provided on the side of the contact plate (602), and a number of protrusions (606) are fixedly provided on the arc-shaped wall of the rotating disk (605) for periodically contacting the contact plate (602) and applying downward pressure.

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