CN-224215152-U - Corrosion medium ration transportation pipe

CN224215152UCN 224215152 UCN224215152 UCN 224215152UCN-224215152-U

Abstract

The utility model discloses a corrosion medium quantitative conveying pipe, belongs to the technical field of corrosion medium conveying, and solves the problem that when in conveying, corrosion medium is directly pumped by a water pump, and the flow of the corrosion medium cannot be controlled by the water pump. Comprises a liquid storage tank, a breathing interface communicated with the liquid storage tank and used for communicating a breathing valve, and a nitrogen leakage valve communicated with the liquid storage tank. When the nitrogen storage device works, the air pump enables nitrogen in the nitrogen cylinder to enter the liquid storage tank through the first nitrogen supply pipeline, and then pushes corrosive medium to flow through the liquid outlet pipeline through the second nitrogen supply pipeline to prevent retention. When the air pressure of the liquid storage tank is overlarge, the nitrogen leakage valve is used for pressure relief, and the breathing interface is connected with the breathing valve for air pressure regulation. After the corrosive medium enters the liquid outlet pipe, the water pump drives the corrosive medium to flow, and the nitrogen in the second nitrogen supply pipeline is pressurized again to enable the medium to flow smoothly. In the process, the first pressure sensor and the second pressure sensor measure the liquid pressure, and the regulating circuit transmits signals to three pneumatic regulating valve control opening degrees, so that the corrosion medium quantitatively leaves through triple control.

Inventors

XIA YANLING
XIA HAIPENG
Ji Chunqin
XIA YI
MENG TAO
HE QIANWEN
ZONG XUXING
ZHANG HAO

Assignees

智鹏阀门集团有限公司

Dates

Publication Date: 20260508
Application Date: 20250628

Claims (10)

1. The corrosion medium quantitative transportation pipe is characterized by comprising a liquid storage tank (1), a breathing interface (2) communicated with the liquid storage tank (1) and used for being communicated with a breathing valve, a nitrogen leakage valve (3) communicated with the liquid storage tank (1), a first nitrogen supply pipeline communicated with the liquid storage tank (1) and capable of being arranged in an on-off mode, a liquid outlet pipe (8) pipeline communicated with the bottom of the liquid storage tank (1), a second nitrogen supply pipeline communicated with the liquid outlet pipe (8) and capable of being arranged in an on-off mode, and an air pump (7) communicated with an external nitrogen cylinder; The air pump is characterized in that the air outlet end of the air pump (7) is respectively communicated with a first nitrogen supply pipeline and a second nitrogen supply pipeline, the liquid outlet pipe (8) comprises a liquid outlet pipe (8) communicated with the bottom of the liquid storage tank (1), a water pump (10) communicated with the liquid outlet pipe (8), a first pneumatic regulating valve (12), a second pneumatic regulating valve (19) and a third pneumatic regulating valve (21), a first pressure sensor (17) and a second pressure sensor (20) for collecting pressure in the liquid outlet pipe (8) are arranged on the liquid outlet pipe, and a regulating circuit is coupled between the first pressure sensor (17) and the first pneumatic regulating valve (12) and between the second pneumatic regulating valve (19) and between the second pressure sensor (20) and the third pneumatic regulating valve (21).
2. The corrosion medium quantitative transportation pipe according to claim 1, wherein the first nitrogen supply pipeline comprises a first air supply pipe (5) communicated with an air pump (7) and an air storage tank, a nitrogen supply valve (4) communicated with the first air supply pipe (5) and a first air source ball valve (6) communicated with the first air supply pipe (5).
3. A corrosion medium quantitative transport pipe according to claim 2, characterized in that the second nitrogen supply pipe comprises a second gas supply pipe (14) communicating the gas pump (7) with the liquid outlet pipe (8), a second gas source ball valve (15) and a gas check valve (16) communicating with the second gas supply pipe (14).
4. The corrosion medium quantitative transportation pipe according to claim 1, wherein the liquid outlet pipe (8) is communicated with a manual ball valve (9), a liquid check valve (11), a self-operated regulating valve (13) and a flow sensor (18).
5. A corrosive medium quantitative transport pipe according to claim 1, wherein said regulating circuit comprises a 5V reference voltage generating circuit (22), a 2.5V bias voltage generating circuit (23), a set point adjusting circuit (24), a proportional operational amplifying circuit (25), and a voltage-current converting circuit (26); The input end of the 5V reference voltage generation circuit (22) is electrically connected, the output end of the 5V reference voltage generation circuit (22) is connected to the input ends of the 2.5V bias voltage generation circuit (23) and the set point adjustment circuit (24), the output end of the 2.5V bias voltage generation circuit (23) is connected to the bias input ends of the proportional operational amplification circuit (25) and the voltage-current conversion circuit (26), the signal output end of the set point adjustment circuit (24) is connected to the set value input end of the proportional operational amplification circuit (25), the detection signal input end of the proportional operational amplification circuit (25) receives the pressure signal, the control signal output end of the proportional operational amplification circuit (25) is connected to the voltage signal input end of the voltage-current conversion circuit (26), and the current output end of the voltage-current conversion circuit (26) is used for outputting the control signal of the pneumatic control valve.
6. The corrosive medium quantitative transport pipe according to claim 5, wherein the 5V reference voltage generating circuit (22) comprises a first resistor and a first zener diode, one end of the first resistor is connected to a 24V power supply, the other end of the first resistor is connected to a cathode of the first zener diode, and an anode of the first zener diode is grounded.
7. The corrosion medium quantitative transport pipe according to claim 5, wherein the 2.5V bias voltage generating circuit (23) comprises a second resistor and a third resistor, one end of the second resistor is connected to a cathode of a first zener diode in the 5V reference voltage generating circuit (22), the other end of the second resistor is connected to one end of the third resistor, the other end of the third resistor is grounded, and a junction of the second resistor and the third resistor is set as a bias output point.
8. The corrosive medium quantitative transport pipe according to claim 5, wherein the setpoint adjustment circuit (24) comprises a potentiometer, a first fixed end of the potentiometer is connected to a cathode of a first zener diode in the 5V reference voltage generating circuit (22), a second fixed end of the potentiometer is grounded, and a sliding end of the potentiometer is connected to a setpoint input end of the proportional operational amplifier circuit (25).
9. The corrosive medium quantitative transport pipe according to claim 5, wherein the proportional operational amplifier circuit (25) comprises an LM358 operational amplifier and a gain adjustment potentiometer, wherein a first inverting input terminal of the LM358 operational amplifier is configured to receive a pressure signal, a first non-inverting input terminal of the LM358 operational amplifier is connected to a sliding terminal of a potentiometer in the setpoint adjustment circuit (24) through a fourth resistor, the first non-inverting input terminal of the LM358 operational amplifier is connected to a bias output point in the 2.5V bias voltage generating circuit (23) through a fifth resistor, a first output terminal of the LM358 operational amplifier is connected to a first inverting input terminal of the LM358 operational amplifier through a first fixed terminal of the gain adjustment potentiometer, a second fixed terminal of the gain adjustment potentiometer is connected to a first output terminal of the LM358 operational amplifier through a sixth resistor, a first output terminal of the LM358 operational amplifier is connected to a voltage-to-current conversion circuit (26), and a first output terminal of the LM358 operational amplifier is connected to a power supply terminal of the LM-switching circuit (24).
10. The corrosive medium quantitative transport pipe according to claim 9, wherein the voltage-current conversion circuit (26) comprises a transistor, a first output end of the LM358 operational amplifier is connected to a second inverting input end of the LM358 operational amplifier through a seventh resistor, a second non-inverting input end of the LM358 operational amplifier is connected to a bias output point in the 2.5V bias voltage generating circuit (23) through an eighth resistor, and further comprises a ninth resistor, a second non-inverting input end of the LM358 operational amplifier is coupled to one end of the ninth resistor, the other end of the ninth resistor is connected to an emitter of the transistor, the other end of the ninth resistor is grounded, a second output end of the LM358 operational amplifier is connected to a base of the transistor, and a collector of the transistor is connected to an anode of the first pneumatic adjusting valve (12) or the second pneumatic adjusting valve (19).

Description

Corrosion medium ration transportation pipe Technical Field The utility model relates to the technical field of corrosive medium transportation, in particular to a corrosive medium quantitative transportation pipe. Background Corrosive medium transport refers to the process of transporting corrosive substances from one location to another. Common corrosive media are acids, bases, salt solutions, and the like. Special corrosion-resistant containers, such as stainless steel cans, glass lining containers and the like, are required to be used in the transportation process, so that the medium is ensured not to damage the containers and leakage is prevented. At the same time, strict compliance with relevant safety regulations, such as controlling transportation temperature and pressure, is required to avoid reaction with other substances. The transportation personnel also need to have professional knowledge and emergency processing capability to cope with possible emergency, ensure the safety and reliability of the transportation process and reduce the damage to the environment and equipment. When corrosive medium is transported, the flow is often required to be controlled, however, when the corrosive medium is transported, the corrosive medium is directly pumped by the water pump, and the flow cannot be controlled by the pumping of the water pump. So a corrosive medium quantitative transportation pipe is provided to solve or alleviate the problems. Disclosure of utility model The utility model aims to solve the defects in the prior art, and provides a corrosion medium quantitative conveying pipe. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The corrosion medium quantitative transportation pipe comprises a liquid storage tank, a breathing interface communicated with the liquid storage tank and used for being communicated with a breathing valve, a nitrogen leakage valve communicated with the liquid storage tank, a first nitrogen supply pipeline communicated with the liquid storage tank and capable of being opened and closed, a liquid outlet pipeline communicated with the bottom of the liquid storage tank, a second nitrogen supply pipeline communicated with the liquid outlet pipeline and capable of being opened and closed, and an air pump communicated with an external nitrogen cylinder; The air outlet end of the air pump is respectively communicated with the first nitrogen supply pipeline and the second nitrogen supply pipeline, the liquid outlet pipeline comprises a liquid outlet pipe communicated with the bottom of the liquid storage tank, a water pump, a first pneumatic regulating valve, a second pneumatic regulating valve and a third pneumatic regulating valve which are communicated with the liquid outlet pipe, a first pressure sensor and a second pressure sensor for collecting pressure in the liquid outlet pipe are arranged on the liquid outlet pipe, and a regulating circuit is coupled between the first pressure sensor and the first pneumatic regulating valve, between the second pneumatic regulating valve and between the second pressure sensor and the third pneumatic regulating valve. Preferably, the first nitrogen supply pipeline comprises a first air supply pipe communicated with the air pump and the air storage tank, a nitrogen supply valve communicated with the first air supply pipe, and a first air source ball valve communicated with the first air supply pipe. Preferably, the second nitrogen supply pipeline comprises a second air supply pipe communicated with the air pump and the liquid outlet pipe, a second air source ball valve communicated with the second air supply pipe and a gas check valve. Preferably, the liquid outlet pipe is communicated with a manual ball valve, a liquid check valve, a self-operated regulating valve and a flow sensor. Preferably, the regulating circuit comprises a 5V reference voltage generating circuit, a 2.5V bias voltage generating circuit, a set point adjusting circuit, a proportional operational amplifying circuit, and a voltage-to-current converting circuit; The input end of the 5V reference voltage generating circuit is electrically connected with the input end of the 2.5V bias voltage generating circuit and the input end of the set point adjusting circuit, the output end of the 2.5V bias voltage generating circuit is connected with the bias input ends of the proportional operational amplifying circuit and the voltage-current converting circuit, the signal output end of the set point adjusting circuit is connected with the set value input end of the proportional operational amplifying circuit, the detection signal input end of the proportional operational amplifying circuit receives the pressure signal, the control signal output end of the proportional operational amplifying circuit is connected with the voltage signal input end of the voltage-current converting circuit, and the current output end of the voltage-c