Stripping tower output pressure control device

Abstract

The utility model discloses a stripping tower output pressure control device, which relates to the technical field of stripping towers and comprises a bottom frame, the upper end of the bottom frame is fixedly connected with a stripping tower body and a support frame, the outer surface of the stripping tower body is sequentially communicated with a liquid inlet pipe and a gas inlet pipe from top to bottom, and the upper end of the stripping tower body is communicated with a gas outlet pipe. The other end of the air outlet pipe is fixedly connected with a pressure sensor and an electromagnetic valve in sequence, the end, away from the pressure sensor, of the electromagnetic valve is fixedly connected with a pump, the pump is fixedly installed at the upper end of the supporting frame, and the output end of the pump is fixedly connected with a conveying pipe. According to the utility model, a two-stage composite pressure regulating mechanism is constructed through the electromagnetic valve and the pressure fine-tuning assembly, so that the precision of pressure control is improved, the flow regulating assemblies are arranged on the liquid inlet pipe and the air inlet pipe, the self-adaptive regulation of the liquid inlet flow and the air inlet flow is realized, and the stability and the reliability of flow regulation are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stripping tower technical field, concretely relates to a stripping tower output pressure control device. BACKGROUND

[0002] The stripping tower is a kind of equipment for gas-liquid separation, is widely used in chemical engineering, petroleum chemical industry and environmental engineering etc., its main function is through the contact between the gas and liquid, some components in liquid are taken away by gas, to achieve the purpose of separation or removal, in chemical production, the output pressure of stripping tower plays a decisive role to the stability of entire production process and product quality, if output pressure is too high, it can cause equipment damage, material leakage, and cause safety accident, if output pressure is too low, it will affect separation effect, reduce product quality and production efficiency.

[0003] The output pressure control device of the current stripping tower is mostly only controlled by the opening of valve in pressure regulation, and the control precision is low, and the liquid inlet flow and air inlet flow of the current stripping tower change will cause the fluctuation of output pressure, thereby reducing the stability of output pressure control, therefore, the stripping tower output pressure control device is provided to solve the problems in the above. UTILITY MODEL CONTENT

[0004] To solve the above technical problem, provide a kind of stripping tower output pressure control device, the technical scheme of the present application solves the problem that the output pressure control device of the current stripping tower in the background art is mostly only controlled by the opening of valve in pressure regulation, control precision is low, and the liquid inlet flow and air inlet flow of the current stripping tower change will cause the fluctuation of output pressure, thereby reducing the stability of output pressure control.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A kind of stripping tower output pressure control device, including chassis, the upper end of the chassis is fixedly connected with stripping tower body and support frame, the outer surface of stripping tower body is sequentially communicated with liquid inlet pipe and air inlet pipe from top to bottom, the upper end of stripping tower body is communicated with gas outlet pipe, the other end of gas outlet pipe is sequentially fixedly connected with pressure sensor and electromagnetic valve, the end of electromagnetic valve away from pressure sensor is fixedly connected with pump machine, pump machine is fixedly installed on the upper end of support frame, the output end of pump machine is fixedly connected with delivery pipe, the outer surface of gas outlet pipe is provided with pressure fine adjustment assembly, the end of liquid inlet pipe and air inlet pipe away from stripping tower body is provided with flow regulating assembly;

[0007] Wherein, the pressure fine adjustment assembly includes branch pipe communicated with gas outlet pipe, hydraulic cylinder is fixedly installed at the front end of branch pipe, the output end of hydraulic cylinder is penetrated through the front end of branch pipe and is fixedly connected with piston,

[0008] The flow adjusting assembly comprises a connecting pipe, a fixed ring and a plurality of fixed blocks are fixedly connected inside the connecting pipe, a fixed cylinder is fixedly connected inside the fixed block, an adjusting cavity is formed inside the fixed cylinder, an adjusting rod is slidably connected inside the adjusting cavity, a conical adjusting block is fixedly connected to one end of the adjusting rod penetrating through the fixed cylinder and close to the fixed ring, and a push plate is fixedly connected to the other end of the adjusting rod penetrating through the fixed cylinder and away from the fixed ring.

[0009] Preferably, the push plate is slidably connected inside the connecting pipe.

[0010] Preferably, a reset block is fixedly connected to the outer surface of the adjusting rod, the reset block is slidably connected inside the adjusting cavity, a reset spring is sleeved on the outer surface of the adjusting rod, and the two ends of the reset spring are fixedly connected to the end of the reset block close to the conical adjusting block and the inner wall of the adjusting cavity close to the conical adjusting block, respectively.

[0011] Preferably, an exhaust pipe is communicated with the outer surface of the branch pipe close to the side of the hydraulic cylinder.

[0012] Preferably, the left end of the connecting pipe close to the fixed ring is fixedly connected to the left end of the air inlet pipe.

[0013] Preferably, the right end of the connecting pipe close to the fixed ring is fixedly connected to the right end of the liquid inlet pipe.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model discloses a kind of stripping tower output pressure control device, two-stage compound pressure regulating mechanism is constructed by electromagnetic valve and pressure fine adjustment component, the precision of pressure control is improved, flow adjusting assembly is arranged on liquid inlet pipe and air inlet pipe, the self-adapting regulation of liquid inlet and air inlet flow is realized, and the stability and reliability of flow regulation are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the utility model;

[0017] Figure 2 It is the structural schematic diagram of stripping tower in the utility model;

[0018] Figure 3 It is the structural schematic diagram of pressure fine adjustment component in the utility model;

[0019] Figure 4 It is the structural schematic diagram of flow adjusting assembly in the utility model;

[0020] Figure 5 It is the structural schematic diagram of push plate in the utility model.

[0021] The reference signs in the drawings are:

[0022] 1, chassis; 2, stripping tower body; 3, support frame; 4, liquid inlet pipe; 5, gas inlet pipe;

[0023] 6, flow regulating assembly; 601, connecting pipe; 602, fixing ring; 603, fixing block; 604, fixing cylinder; 605, regulating cavity; 606, regulating rod; 607, conical regulating block; 608, push plate; 609, reset block; 6010, reset spring;

[0024] 7, gas outlet pipe; 8, pressure sensor; 9, electromagnetic valve; 10, pump; 11, conveying pipe;

[0025] 12, pressure fine adjustment assembly; 1201, branch pipe; 1202, hydraulic cylinder; 1203, piston; 1204, exhaust pipe. DETAILED DESCRIPTION

[0026] The following description is used to disclose the utility model so that those skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious variants can be thought of by those skilled in the art.

[0027] Referring to Figures 1-3 As shown in the figure, a stripping tower output pressure control device, comprising a chassis 1, the upper end of the chassis 1 is fixedly connected with a stripping tower body 2 and a support frame 3, the outer surface of the stripping tower body 2 is sequentially communicated with a liquid inlet pipe 4 and a gas inlet pipe 5 from top to bottom, the upper end of the stripping tower body 2 is communicated with a gas outlet pipe 7, the other end of the gas outlet pipe 7 is sequentially fixedly connected with a pressure sensor 8 and an electromagnetic valve 9, the end of the electromagnetic valve 9 away from the pressure sensor 8 is fixedly connected with a pump 10, the pump 10 is fixedly installed on the upper end of the support frame 3, the output end of the pump 10 is fixedly connected with a conveying pipe 11, the outer surface of the gas outlet pipe 7 is provided with a pressure fine adjustment assembly 12, and the ends of the liquid inlet pipe 4 and the gas inlet pipe 5 away from the stripping tower body 2 are both provided with a flow regulating assembly 6.

[0028] Among them, the pressure fine adjustment assembly 12 comprises a branch pipe 1201 communicated with the gas outlet pipe 7, the front end of the branch pipe 1201 is fixedly installed with a hydraulic cylinder 1202, and the output end of the hydraulic cylinder 1202 penetrates the front end of the branch pipe 1201 and is fixedly connected with a piston 1203.

[0029] Further, the outer surface of the branch pipe 1201 is communicated with an exhaust pipe 1204 on the side close to the hydraulic cylinder 1202.

[0030] Further, the pressure sensor 8 adopts a piezoresistive pressure sensor, an elastic diaphragm is arranged inside the pressure sensor 8, and a strain gauge is mounted on the diaphragm. When the gas passes through the pressure sensor 8, the pressure acts on the diaphragm of the sensor, causing the deformation of the diaphragm. The deformation of the diaphragm causes the resistance of the strain gauge to change. The resistance change is converted into an electric signal proportional to the gas pressure through a bridge circuit, and finally the corresponding pressure is output.

[0031] Further, a certain pipe spacing is left between the pressure sensor 8 and the electromagnetic valve 9.

[0032] Further, the pump 10 provides power for gas delivery, and the gas regulated by the electromagnetic valve 9 is delivered to the subsequent processing equipment.

[0033] Further, the electromagnetic valve 9 automatically adjusts the valve opening degree according to the signal transmitted by the pressure sensor 8, controls the gas flow, realizes the preliminary regulation of the output pressure of the stripping tower, and drives the piston 1203 to move in the branch pipe 1201 through the hydraulic cylinder 1202, changes the volume of the pipe between the gas outlet pipe 7 and the electromagnetic valve 9, and realizes the fine adjustment of the output pressure.

[0034] Further, the flow regulating assembly 6 comprises a connecting pipe 601, a fixed ring 602 and a plurality of fixed blocks 603 are fixedly connected in the connecting pipe 601, a fixed cylinder 604 is fixedly connected in the fixed block 603, an adjusting cavity 605 is formed in the fixed cylinder 604, an adjusting rod 606 is slidably connected in the adjusting cavity 605, a tapered adjusting block 607 is fixedly connected to one end of the adjusting rod 606 which penetrates through the fixed cylinder 604 and is close to the fixed ring 602, and a push plate 608 is fixedly connected to the other end of the adjusting rod 606 which penetrates through the fixed cylinder 604 and is away from the fixed ring 602.

[0035] Further, the push plate 608 is slidably connected in the connecting pipe 601.

[0036] Further, a reset block 609 is fixedly connected to the outer surface of the adjusting rod 606, the reset block 609 is slidably connected in the adjusting cavity 605, a reset spring 6010 is sleeved on the outer surface of the adjusting rod 606, and the two ends of the reset spring 6010 are fixedly connected to the end of the reset block 609 close to the tapered adjusting block 607 and the inner wall of the adjusting cavity 605 close to the tapered adjusting block 607, respectively.

[0037] Further, the left end of the left connecting pipe 601 close to the fixed ring 602 is fixedly connected to the left end of the gas inlet pipe 5.

[0038] Further, the right end of the right connecting pipe 601 close to the fixed ring 602 is fixedly connected to the right end of the liquid inlet pipe 4.

[0039] Further, the surface of the push plate 608 is provided with a plurality of through holes at positions away from the adjusting rod 606, which provide channels for the flow of gas or liquid, and when the flow of gas or liquid increases, the pressure on the push plate 608 also increases, at this time, the push plate 608 is pushed to move in the direction of the fixed ring 602, during the movement, the reset block 609 extrudes the reset spring 6010 to compress, and at the same time, the tapered adjusting block 607 gradually inserts into the inside of the fixed ring 602, as the inserted part of the tapered adjusting block 607 increases, the flow of gas or liquid into the stripping tower body 2 will decrease, on the contrary, the flow increases, thereby realizing self-adaptive adjustment of the flow, which is helpful to improve the stability of the output pressure control.

[0040] Working principle: when in use, the pressure sensor 8 monitors the pressure change in the outlet pipe 7 in real time and feeds back data to the external control device, the electromagnetic valve 9 automatically adjusts the valve opening degree according to the signal transmitted by the pressure sensor 8, controls the gas flow, realizes the preliminary regulation and control of the output pressure of the stripping tower, and drives the piston 1203 in the branch pipe 1201 through the hydraulic cylinder 1202, changes the volume of the section of the outlet pipe 7 and the electromagnetic valve 9, further realizes the fine adjustment of the output pressure, and further improves the accuracy of the output pressure control.

[0041] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A stripping tower output pressure control device, characterized in that, Includes a base frame (1), the upper end of which is fixedly connected to a stripping tower body (2) and a support frame (3). The outer surface of the stripping tower body (2) is connected to a liquid inlet pipe (4) and an air inlet pipe (5) from top to bottom. The upper end of the stripping tower body (2) is connected to an air outlet pipe (7). The other end of the air outlet pipe (7) is fixedly connected to a pressure sensor (8) and a solenoid valve (9). The end of the solenoid valve (9) away from the pressure sensor (8) is fixedly connected to a pump (10). The pump (10) is fixedly installed on the upper end of the support frame (3). The output end of the pump (10) is fixedly connected to a delivery pipe (11). The outer surface of the air outlet pipe (7) is provided with a pressure fine-tuning component (12). The ends of the liquid inlet pipe (4) and the air inlet pipe (5) away from the stripping tower body (2) are both provided with flow regulating components (6). The pressure fine-tuning component (12) includes a branch pipe (1201) connected to the air outlet pipe (7). A hydraulic cylinder (1202) is fixedly installed at the front end of the branch pipe (1201). The output end of the hydraulic cylinder (1202) passes through the front end of the branch pipe (1201) and is fixedly connected to a piston (1203). The flow regulating component (6) includes a connecting pipe (601), a fixing ring (602) and multiple fixing blocks (603) are fixedly connected inside the connecting pipe (601), a fixing cylinder (604) is fixedly connected inside the fixing block (603), an regulating cavity (605) is opened inside the fixing cylinder (604), an regulating rod (606) is slidably connected inside the regulating cavity (605), one end of the regulating rod (606) passes through the fixing cylinder (604) near the fixing ring (602) and is fixedly connected to a conical regulating block (607), and the other end of the regulating rod (606) passes through the fixing cylinder (604) away from the fixing ring (602) and is fixedly connected to a push plate (608).

2. The stripping tower output pressure control device according to claim 1, characterized in that: The push plate (608) is slidably connected to the inside of the connecting pipe (601).

3. The stripping tower output pressure control device according to claim 1, characterized in that: A reset block (609) is fixedly connected to the outer surface of the adjusting rod (606), and the reset block (609) is slidably connected to the inside of the adjusting cavity (605).

4. The stripping tower output pressure control device according to claim 1, characterized in that: A return spring (6010) is sleeved on the outer surface of the adjusting rod (606).

5. The stripping tower output pressure control device according to claim 4, characterized in that: The two ends of the reset spring (6010) are respectively fixedly connected to the end of the reset block (609) near the conical adjusting block (607) and the inner wall of the adjusting cavity (605) near the conical adjusting block (607).

6. The stripping tower output pressure control device according to claim 1, characterized in that: The outer surface of the branch pipe (1201) near the hydraulic cylinder (1202) is connected to an exhaust pipe (1204).

7. The stripping tower output pressure control device according to claim 1, characterized in that: The end of the connecting pipe (601) on the left side near the fixing ring (602) is fixedly connected to the left end of the air intake pipe (5).

8. The stripping tower output pressure control device according to claim 1, characterized in that: The end of the connecting pipe (601) on the right side near the fixing ring (602) is fixedly connected to the right end of the liquid inlet pipe (4).

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