CN217928284U - High-pressure solid-slurry-containing automatic discharging system for experimental device - Google Patents

Abstract

The utility model discloses an automatic unloading system of high-pressure solid-containing slurry for experimental device, including the high-pressure pipeline connected with the bottom of the gas-liquid separation tank, the top of the gas-liquid separation tank is provided with an air inlet, an air outlet and a differential pressure gauge interface, the side of the gas-liquid separation tank is provided with a material inlet, the high-pressure pipeline is connected with a liquid phase discharge port through a pneumatic switch valve group, the pneumatic switch valve group is formed by connecting a plurality of pneumatic switch valves in series, in parallel or in combination, each pneumatic switch valve is connected with a solenoid valve, and all solenoid valves are connected with a signal cable; the air inlet is communicated with the measuring gas through a one-way valve, two ends of a differential pressure sensor are respectively connected with the air inlet and a differential pressure meter interface, and signals of the differential pressure sensor control the electromagnetic valve in an interlocking mode through an automatic control system. The utility model discloses the principle is simple, low cost, and control is nimble, but wide application in the coal liquefaction, the oil coal smelts, slurry bed hydrogenation and the high-pressure system in fields such as ft reaction, paint altogether.

Description

High-pressure solid-slurry-containing automatic discharging system for experimental device

Technical Field

The utility model relates to an experimental apparatus contains solid thick liquids automatic discharge system with high pressure belongs to high-pressure chemical industry equipment high pressure thick liquids technical field of unloading.

Background

The research of new catalytic materials and the development of new process technologies in the fields of coal liquefaction, oil-coal co-refining, slurry bed hydrogenation, fischer-Tropsch reaction, paint and the like do not leave an experimental platform, and the process packs of industrial production devices are developed on the basis of experimental data. Although the scale of the experimental device is small, the experimental device has complete five-organ, the experimental devices have few continuous and stable automatic discharging systems containing solid slurry in the gas-liquid separator, wherein the material level control valve is the most critical part, the working condition has the characteristics of small flow, solid powder, high temperature and high pressure, hydrogen and the like, and the harsh working condition requires high part precision, strong material hardness, safety and reliability; the like parts in the industrial production device are directly controlled by the regulating valve, and relatively mature products can be purchased or manufacturers are willing to research, develop and produce. However, the experimental device has small production scale, high technical requirement and harsh working conditions, and can not simply reduce the similar products in the industrial production device in proportion; and this kind of valve on the experimental apparatus is because of market demand is little, research and development cost is high, invest manpower and financial resources are big, can not batch production, market rate of return is low, does not have professional producer to produce, even if nonstandard customization, not only research and development cycle is long, invests greatly, feasible reliability still waits to investigate.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: provides an automatic discharging system of high-pressure solid-containing slurry for an experimental device.

In order to solve the technical problem, the utility model provides an automatic unloading system of high-pressure solid-containing slurry for experimental device, including the high-pressure pipeline of being connected with the gas-liquid separation tank bottom, the top of gas-liquid separation tank is equipped with air inlet, gas outlet and differential pressure gauge interface, and the side of gas-liquid separation tank is equipped with the material import, the high-pressure pipeline passes through the pneumatic switch valves group and connects the liquid phase discharge gate, and the pneumatic switch valves group is connected by the mode of a plurality of pneumatic switch valves series connection, parallelly connected or combination and constitutes, and each pneumatic switch valve all is connected with a solenoid valve, and all solenoid valves all are connected with signal cable; the air inlet is communicated with the measuring gas through a one-way valve, the air inlet, the one-way valve and the connecting pipeline of the measuring gas are air inlet channels of the measuring gas, two ends of a differential pressure sensor are respectively connected with the air inlet and a differential pressure meter interface, and signals of the differential pressure sensor control the electromagnetic valve in an interlocking mode through an automatic control system.

Preferably, a gas flow controller is arranged between the one-way valve and the measuring gas.

Preferably, in the pneumatic switch valve group, adjacent pneumatic switch valves are connected through an inter-valve-group pipeline; the pneumatic switch valve group is connected with the liquid phase discharge port through a connecting pipeline.

Preferably, a tank body heat tracing system is arranged on the outer side of the gas-liquid separation tank.

The utility model discloses the pneumatic switch valve that utilizes relatively ripe can directly purchase realizes, through the valve intermittent type of the signal program control series connection of material level detection switch and action frequency in turn, and pipeline volumetric thick liquids between every operation cycle discharge valve to thick liquids in the realization high-pressure system guarantee that the material level among the high-pressure system is steady, safety isolation between high-pressure and low-pressure to the continuous transfer of low-pressure system, have the equal function of material level governing valve.

The utility model discloses the principle is simple, low cost, and control is nimble, but the wide application is in the slurry automatic discharge in the high-pressure system in the new technology development experiment platform in fields such as coal liquefaction, oil coal smelt, slurry bed hydrogenation and ft reaction, paint jointly.

Drawings

FIG. 1 is a schematic view of an automatic discharge system for high-pressure solids-containing slurry for an experimental apparatus provided in example 1;

FIG. 2 is a schematic view of an automatic discharge system for high-pressure solid-containing slurry used in an experimental apparatus provided in example 2;

fig. 3 is a schematic view of an automatic discharge system of high-pressure solid-containing slurry for an experimental apparatus provided in example 3.

Detailed Description

In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

The utility model provides an experimental apparatus is with high pressure containing solid thick liquids automatic discharge system, include the high-pressure pipeline 13 of being connected with gas-liquid separation jar 1 bottom, the top of gas-liquid separation jar 1 is equipped with air inlet E, gas outlet B and differential pressure gauge interface F, and the side of gas-liquid separation jar 1 is equipped with material import C, high-pressure pipeline 13 passes through pneumatic switch valves group and connects liquid phase discharge gate D, and pneumatic switch valves group is connected by the mode hookup of a plurality of pneumatic switch valves 11 series connection, parallelly connected or combination and is constituteed, and each pneumatic switch valve 11 all is connected with a two-position three way solenoid valve 12, and all solenoid valves 12 all are connected with signal cable; the gas inlet E is connected with the gas flow controller 5 and the one-way valve 6 through pipelines, is a gas inlet channel of measurement gas and is communicated with the measurement gas A, two ends of the differential pressure sensor 7 are respectively connected with the gas inlet E and the differential pressure meter interface F, and signals of the differential pressure sensor 7 control the electromagnetic valve through an automatic control system in an interlocking mode.

In the pneumatic switch valve group, adjacent pneumatic switch valves 11 are connected through a pipeline 14 between the valve groups; the pneumatic switch valve group is connected with the liquid phase discharge port D through a connecting pipeline 15.

An air inlet pipeline 3 communicated with an air inlet E at the top is arranged in the gas-liquid separation tank 1; a tank body heat tracing system 4 is arranged outside the gas-liquid separation tank 1. The gas-liquid separation tank 1 filled with the slurry 2, the detection gas flow controller 5, the check valve 6 and the differential pressure sensor 7 form a material level detection system.

The utility model discloses a 11 intermittent type switch in turn of pneumatic switch valve and action frequency in the signal program control pneumatic switch valves that the material level detected, pipeline volumetric thick liquids between every operation cycle discharge valve to realize that thick liquids 2 among the high pressure system guarantee that the material level among the high pressure system is steady, safety isolation between the high-low pressure to the continuous transfer of low pressure system. The utility model discloses a pressure differential that the inert gas of fixed small flow of measurement passes through thick liquids in the knockout drum corresponds the material level in the jar.

Example 1

The pneumatic switch valve set in this embodiment is shown in fig. 1, and includes two pneumatic switch valves 11 connected in series.

In order to reduce the viscosity of the slurry and improve the fluidity of the material, all pipelines and valves are provided with electric tracing; in order to improve the reliability and safety of automatic control, the pneumatic switch valve 11 is provided with valve position feedback, the pneumatic switch valve 11 can adopt a ball valve or a needle valve, a valve core and a valve seat of the pneumatic switch valve are required to be wear-resistant, the pneumatic switch valve can be processed by adopting tungsten carbide materials, and the pneumatic switch valve not only has a shaped product of an imported brand, but also can be manufactured by domestic non-calibration.

In the process of realizing continuous and stable discharge of the slurry 2 in the gas-liquid separation tank 1, the pneumatic switch valve group and the differential pressure sensor 7 which are connected in series form a control loop, and the automatic discharging process is controlled by an automatic control system program:

firstly, opening a pneumatic switch valve at a high-pressure end, closing a pneumatic switch valve at a low-pressure end, and feeding materials through a pipeline between double valves;

secondly, closing a pneumatic switch valve at a high-pressure end, opening a pneumatic switch valve at a low-pressure end, and discharging materials through a pipeline between the double valves; the two steps are circularly executed, the discharging amount in each period is determined by the volume of a pipeline between the double valves, the circulating period of the action of the double valves is determined by the material level, the material level is high, the action circulating interval time is short, the material level is low, and the action circulating interval time is long.

In the discharging process, only one pneumatic switch valve is opened and the other pneumatic switch valve is closed all the time by the interlocking of the control system, and the control system opens the other pneumatic switch valve after receiving a closing valve position signal of the pneumatic switch valve.

Example 2

If the system pressure is high, in order to reduce the workload of the pneumatic switch valve bank and improve the service life of the pneumatic switch valve, the pneumatic switch valve bank in the embodiment may be adopted, as shown in fig. 2, which includes three pneumatic switch valves 11 connected in series. Compared with the embodiment 1 in which one pneumatic switch valve 11 is connected in series, two different pneumatic switch valves 11 can be periodically and alternately used by a program, and the other pneumatic switch valve 11 is in a rest state; the specifications and the lengths of pipelines between the first pneumatic switch valve 11 and the second pneumatic switch valve 11 and between the second pneumatic switch valve 11 and the third pneumatic switch valve 11 from top to bottom are consistent, and the working frequency of the combination of the first pneumatic switch valve 11 and the second pneumatic switch valve 11 and the combination of the second pneumatic switch valve 11 and the third pneumatic switch valve 11 is twice as high as that of the combination of the first pneumatic switch valve 11 and the third pneumatic switch valve 11.

Example 3

If the system pressure is high and the automatic discharge amount is large, in order to reduce the work load of the pneumatic valve and prolong the service life of the pneumatic valve, the pneumatic switch valve set in the embodiment can be adopted, as shown in fig. 3, the pneumatic switch valve set comprises four pneumatic switch valves 11, and after two pneumatic switch valves are connected in series, two pneumatic switch valves are connected in parallel. Compared with the embodiment 1, the pneumatic switch valve banks connected in series are connected in parallel, two groups connected in parallel can work simultaneously or one group can work for the other group, and the working frequency and the alternation period of different valve banks are controlled by programs. In fig. 3, two sets of pneumatic switch valves connected in series are respectively connected with one solenoid valve, and each set of solenoid valves is controlled and switched by an automatic control system so as to realize the switching action of each pneumatic valve.

The utility model provides a laboratory is with automatic discharge system who contains solid thick liquids and discharge in succession in low discharge high pressure system, this system is parallelly connected again after 2 ~ 3 pneumatic switch valve's series combination or 4 pneumatic switch valves two liang of series connection, valve intermittent type through the signal program control series connection of material level detection switches and the frequency of action in turn, the pipeline volumetric thick liquids between every operation cycle discharge valve, thereby realize thick liquids among the high pressure system and to the continuous transfer of low pressure system, guarantee that the material level among the high pressure system is steady, safety isolation between high-low pressure.

Claims (4)

1. The automatic high-pressure solid-slurry-containing discharging system for the experimental device comprises a high-pressure pipeline (13) connected with the bottom of a gas-liquid separation tank (1), wherein the top of the gas-liquid separation tank (1) is provided with a gas inlet (E), a gas outlet (B) and a differential pressure gauge interface (F), and the side surface of the gas-liquid separation tank (1) is provided with a material inlet (C), and is characterized in that the high-pressure pipeline (13) is connected with a liquid-phase discharge port (D) through a pneumatic switch valve group, the pneumatic switch valve group is formed by connecting a plurality of pneumatic switch valves (11) in series, parallel or combined mode, each pneumatic switch valve (11) is connected with one electromagnetic valve (12), and all the electromagnetic valves (12) are connected with signal cables; the air inlet (E) is communicated with the measuring gas (A) through a one-way valve (6), two ends of a differential pressure sensor (7) are respectively connected with the air inlet (E) and a differential pressure meter interface (F), and signals of the differential pressure sensor (7) are interlocked to control the electromagnetic valve through an automatic control system.

2. The high-pressure solid-containing slurry automatic discharging system for the experimental device according to claim 1, wherein a gas flow controller (5) is arranged between the check valve (6) and the measuring gas (A).

3. The high-pressure solid-containing slurry automatic discharge system for the experimental device according to claim 1, wherein in the pneumatic switch valve group, adjacent pneumatic switch valves (11) are connected through a pipeline (14) between the valve groups; the pneumatic switch valve group is connected with the liquid phase discharge hole (D) through a connecting pipeline (15).

4. The high-pressure solid-containing slurry automatic discharge system for the experimental device according to claim 1, wherein a tank body heat tracing system (4) is arranged outside the gas-liquid separation tank (1).

Images